From a3df309bdd1ea54242d39e62403548d1e4845f8e Mon Sep 17 00:00:00 2001 From: Lars Brinkhoff Date: Sat, 9 Apr 2022 13:32:46 +0200 Subject: [PATCH] Files from SUMEX. --- sumex/muddle.all-750609.1.txt | 33227 ++++++++++++++++++++++++ sumex/muddle.source-list.750610.2.txt | 52 + 2 files changed, 33279 insertions(+) create mode 100644 sumex/muddle.all-750609.1.txt create mode 100644 sumex/muddle.source-list.750610.2.txt diff --git a/sumex/muddle.all-750609.1.txt b/sumex/muddle.all-750609.1.txt new file mode 100644 index 0000000..26d2b3d --- /dev/null +++ b/sumex/muddle.all-750609.1.txt @@ -0,0 +1,33227 @@ +TITLE AGC MUDDLE GARBAGE COLLECTOR + +;SYSTEM WIDE DEFINITIONS GO HERE + +.GLOBAL RCL,VECTOP,VECBOT,PARTOP,PARBOT,HITOP,HIBOT,GETPAG +.GLOBAL PDLBUF,PDLEX,PDLEXP,GCFLG,GCPDL,GETNUM,PARNEW,MOVPUR +.GLOBAL PGROW,TPGROW,TIMOUT,MAINPR,%SLEEP,MSGTYP,PURTOP,PURBOT,STOSTR +.GLOBAL MTYI,UPLO,FRMUNG,BYTDOP,GLOBSP,SYSMAX,FREDIF,FREMIN,GCHAPN,INTFLG +.GLOBAL SAT,TTOCHN,TYPVEC,ICONS,INCONS,IBLOCK,IEUVEC,IEVECTI,CELL2 +.GLOBAL GIBLOK,REHASH,IBLOK1,IILIST,IIFORM,CIVEC,CIUVEC,CICONS +.GLOBAL SPBASE,OUTRNG,CISTNG,%RUNAM,PURVEC,GCDOWN,N.CHNS,CHNL1 +.GLOBAL CAFRE,CAFRET,STOGC,GCHN,WNDP,FRNP,%GCJOB,%SHWND,%SHFNT,%INFMP,%GETIP +.GLOBAL TD.PUT,TD.GET,TD.LNT +.GLOBAL CTIME,MTYO,ILOC,GCRSET +.GLOBAL GCTIM,GCCAUS,GCCALL,AAGC,LVLINC,STORIC,GVLINC,TYPIC +; GLOBALS ASSOCIATE WITH THE ASSOCIATION VECTOR + +.GLOBAL ASOVEC,ASOLNT,ITEM,INDIC,VAL,NWORDT,NODPNT,PNTRS +.GLOBAL CELL,BINDID,GCFLCH,TYPBOT,GLOBAS,TPBASE + +.GLOBAL P.TOP,P.CORE,PMAP + +NGCS==8 ; AFTER NGCS, DO HAIRY VAL/ASSOC FLUSH +PDLBUF=100 +TPMAX==20000 ;PDLS LARGER THAN THIS WILL BE SHRUNK +PMAX==4000 ;MAXIMUM PSTACK SIZE +TPMIN==1000 ;MINIMUM PDL SIZES +PMIN==400 +TPGOOD==10000 ; A GOOD STACK SIZE +PGOOD==1000 +.ATOM.==200000 ; FLAG SAYING ATOMS MARKED (FOR VAL FLUSH LOGIC) + +GCHN==0 ; CHANNEL FOR FUNNNY INFERIOR +STATNO==19. ; # OF STATISTICS FOR BLOAT-STAT +STATGC==8. ; # OF GC-STATISTICS FOR BLOAT-STAT + + +RELOCATABLE +.INSRT MUDDLE > + +TYPNT=AB ;SPECIAL AC USAGE DURING GC +F=TP ;ALSO SPECIAL DURING GC +LPVP=SP ;SPECIAL FOR GC, HOLDS POINTER TO PROCESS CHAIN +FPTR=TB ; POINT TO CURRENT FRONTIER OF INFERIOR + + +; WINDOW AND FRONTIER PAGES + +FRONT==776000 ; PAGE 255. IS FRONTIER +WIND==774000 ; PAGE 254. IS WINDOW +FRNP==FRONT/2000 +WNDP==WIND/2000 + + + + + + +.GLOBAL FLIST + +MFUNCTION BLOATSTAT,SUBR,[BLOAT-STAT] + +ENTRY + + JUMPGE AB,GETUVC ; SEE IF THERE IS AN ARGUMENT + GETYP A,(AB) + CAIE A,TUVEC ; SEE IF THE ARGUMENT IS A UVECTOR + JRST WTYP1 ; IF NOT COMPLAIN + HLRE 0,1(AB) + MOVNS 0 + CAIGE 0,STATNO+STATGC ; SEE IF UVECTOR IS RIGHT LENGTH + JRST WTYP1 + CAMGE AB,[-2,,0] ; SEE IF THERE ARE TOO MANY ARGUMENTS + JRST TMA + MOVE A,(AB) ; GET THE UVECTOR + MOVE B,1(AB) + JRST SETUV ; CONTINUE +GETUVC: MOVEI A,STATNO+STATGC ; CREATE A UVECTOR + PUSHJ P,IBLOCK +SETUV: PUSH P,A ; SAVE UVECTOR + PUSH P,B + MOVE 0,NOWFRE ; COMPUTE FREE STORAGE USED SINCE LAST GC + SUB 0,VECBOT + ADD 0,PARTOP + MOVEM 0,CURFRE + HLRE 0,TP ; COMPUTE STACK SPACE USED UP + ADD 0,NOWTP + SUBI 0,PDLBUF + MOVEM 0,CURTP + MOVE B,IMQUOTE THIS-PROCESS + PUSHJ P,ILOC + HRRZS B + HRRZ C,TPBASE+1(PVP) ; CALCULATE # OF ATOM SLOTS + MOVE 0,B + HRRZ D,SPBASE+1(PVP) ; COMPUTE CURRENT # OF BINDINGS + SUB 0,D + IDIVI 0,6 + MOVEM 0,CURLVL + SUB B,C ; TOTAL WORDS ATOM STORAGE + IDIVI B,6 ; COMPUTE # OF SLOTS + MOVEM B,NOWLVL + HRRZ A,GLOBASE+1(TVP) ; COMPUTE TOTAL # OF GLOBAL SLOTS + HLRE 0,GLOBASE+1(TVP) + SUB A,0 ; POINT TO DOPE WORD + HLRZ B,1(A) + ASH B,-2 ; # OF GVAL SLOTS + MOVEM B,NOWGVL + HRRZ 0,GLOBASE+1(TVP) ; COMPUTE # OF GVAL SLOTS IN USE + HRRZ A,GLOBSP+1(TVP) + SUB A,0 + ASH A,-2 ; NEGATIVE # OF SLOTS USED + SUBI B,(A) + MOVEM B,CURGVL + HRRZ A,TYPBOT+1(TVP) ; GET LENGTH OF TYPE VECTOR + HLRE 0,TYPBOT+1(TVP) + SUB A,0 + HLRZ B,1(A) ; # OF WORDS IN TYPE-VECTOR + IDIVI B,2 ; CONVERT TO # OF TYPES + MOVEM B,NOWTYP + HLRE 0,TYPVEC+1(TVP) ; LENGTH OF VISABLE TYPE-VECTOR + MOVNS 0 + IDIVI 0,2 ; GET # OF TYPES + MOVEM 0,CURTYP + MOVE 0,CODTOP ; GET LENGTH OF STATIONARY IMPURE STORAGE + MOVEM 0,NOWSTO + SETZB B,D ; ZERO OUT MAXIMUM + HRRZ C,FLIST +LOOPC: HLRZ 0,(C) ; GET BLK LENGTH + ADD D,0 ; ADD # OF WORDS IN BLOCK + CAMGE B,0 ; SEE IF NEW MAXIMUM + MOVE B,0 + HRRZ C,(C) ; POINT TO NEXT BLOCK + JUMPN C,LOOPC ; REPEAT + MOVEM D,CURSTO + MOVEM B,CURMAX + HLRE 0,P ; GET AMOUNT OF ROOM LEFT ON P + ADD 0,NOWP + SUBI 0,PDLBUF + MOVEM 0,CURP + PUSHJ P,GCSET ; FIX UP BLOAT-STAT PARAMETERS + MOVSI C,BSTGC ; SET UP BLT FOR GC FIGURES + HRRZ B,(P) ; RESTORE B + HRR C,B + BLT C,(B)STATGC-1 + HRLI C,BSTAT ; MODIFY BLT FOR STATS + ADDI C,STATGC ; B HAS ELEMENTS + BLT C,(B)STATGC+STATNO-1 + MOVEI 0,TFIX + HRLM 0,(B)STATNO+STATGC ; MOVE IN UTYPE + POP P,B + POP P,A ; RESTORE TYPE-WORD + JRST FINIS + + +; THIS IS THE SCHEME USED TO UPDATE CERTAIN IMFORMATION USED BY THE +; BLOAT-SPEC ROUTINE TO GIVE USERS IMFORMATION ABOUT USE OF SPACE BY +; THEIR MUDDLE. + +GCRSET: SETZM GCNO ; CALL FROM INIT, ZAP ALL 1ST + MOVE 0,[GCNO,,GCNO+1] + BLT 0,GCCALL + +GCSET: MOVE A,VECBOT ; COMPUTE FREE SPACE AVAILABLE + SUB A,PARTOP + MOVEM A,NOWFRE + CAMLE A,MAXFRE + MOVEM A,MAXFRE ; MODIFY MAXIMUM + HLRE A,TP ; FIND THE DOPE WORD OF THE TP STACK + MOVNS A + ADDI A,1(TP) ; CLOSE TO DOPE WORD + CAME A,TPGROW + ADDI A,PDLBUF ; NOW AT REAL DOPE WORD + HLRZ B,(A) ; GET LENGTH OF TP-STACK + MOVEM B,NOWTP + CAMLE B,CTPMX ; SEE IF THIS IS THE BIGGEST TP + MOVEM B,CTPMX + HLRE B,P ; FIND DOPE WORD OF P-STACK + MOVNS B + ADDI B,1(P) ; CLOSE TO IT + CAME B,PGROW ; SEE IF THE STACK IS BLOWN + ADDI B,PDLBUF ; POINTING TO IT + HLRZ A,(B) ; GET IN LENGTH + MOVEM A,NOWP + CAMLE A,CPMX ; SEE IF WE HAVE THE BIGGEST P STACK + MOVEM A,CPMX + POPJ P, ; EXIT + + +.GLOBAL PGFIND,PGGIVE,PGTAKE,PGINT + +; FIND AND ALLOCATE AS MANY CONTIGUOUS PAGES AS INDICATED BY REG A +; RETURN THE NUMBER (0-255.) OF THE FIRST SUCH PAGE IN REG B +; RETURN -1 IN REG B IF NONE FOUND + +PGFIND: + JUMPLE A,FPLOSS + PUSHJ P,PGFND1 ; SEE IF ALREADY ENOUGH + SKIPL B ; SKIP IF LOST + POPJ P, + + SUBM M,(P) + PUSH P,E + PUSH P,C + PUSH P,D + MOVE C,PURBOT ; CHECK IF ROOM AT ALL + SUB C,P.TOP ; TOTAL SPACE + MOVEI D,(C) ; COPY FOR CONVERSION TO PAGES + ASH D,-10. + CAIGE C,(A) ; SKIP IF COULD WIN + JRST PGFLOS + + MOVNS A ; MOVE PURE AREA DOWN "A" PAGES + PUSHJ P,MOVPUR + MOVE B,PURTOP ; GET FIRST PAGE ALLOCATED + ASH B,-10. ; TO PAGE # +PGFLOS: POP P,D + POP P,C + POP P,E + PUSHJ P,RBLDM ; GET A NEW VALUE FOR M + JRST MPOPJ + +PGFND1: PUSH P,E + PUSH P,D + PUSH P,C + PUSH P,[-1] ;POSSIBLE CONTENTS FOR REG B + PUSH P,A ;SAVE LENGTH OF BLOCK DESIRED FOR LATER USE + SETZB B,C ;INITIAL SECTION AND PAGE NUMBERS + MOVEI 0,0 ;COUNT OF PAGES ALREADY FOUND + PUSHJ P,PINIT +PLOOP: TDNE E,D ;FREE PAGE ? + JRST NOTFRE ;NO + JUMPN 0,NFIRST ;FIRST FREE PAGE OF A BLOCK ? + MOVEI A,(B) ;YES SAVE ADDRESS OF PAGE IN REG A + IMULI A,32. + ADDI A,(C) +NFIRST: ADDI 0,1 + CAML 0,(P) ;TEST IF ENOUGH PAGES HAVE BEEN FOUND + JRST PWIN ;YES, FINISHED + SKIPA +NOTFRE: MOVEI 0,0 ;RESET COUNT + PUSHJ P,PNEXT ;NEXT PAGE + JRST PLOSE ;NONE--LOSE RETURNING -1 IN REG B + JRST PLOOP + +PWIN: MOVEI B,(A) ;GET WINNING ADDRESS + MOVEM B,(P)-1 ;RETURN ADDRESS OF WINNING PAGE + MOVE A,(P) ;RELOAD LENGTH OF BLOCK OF PAGES + MOVE 0,[TDO E,D] ;INST TO SET "BUSY" BITS + JRST ITAKE + +;CLAIM OR RETURN TO FREE STORAGE AS MANY CONTIGUOUS PAGES AS INDICATED BY REG A +;THE NUMBER (0 - 255.) OF THE FIRST SUCH PAGE IS IN REG B +PGGIVE: MOVE 0,[TDZ E,D] ;INST TO SET "FREE" BITS + SKIPA +PGTAKE: MOVE 0,[TDO E,D] ;INST TO SET "BUSY" BITS + JUMPLE A,FPLOSS + CAIL B,0 + CAILE B,255. + JRST FPLOSS + PUSH P,E + PUSH P,D + PUSH P,C + PUSH P,B + PUSH P,A +ITAKE: IDIVI B,32. + PUSHJ P,PINIT + SUBI A,1 +RTL: XCT 0 ;SET APPROPRIATE BIT + PUSHJ P,PNEXT ;NEXT PAGE'S BIT + JUMPG A,FPLOSS ;TOO MANY ? + SOJGE A,RTL + MOVEM E,PMAP(B) ;REPLACE BIT MASK +PLOSE: POP P,A + POP P,B + POP P,C + POP P,D + POP P,E + POPJ P, + + +PINIT: MOVE E,PMAP(B) ;GET BITS FOR THIS SECTION + HRLZI D,400000 ;BIT MASK + MOVNS C + LSH D,(C) ;SHIFT TO APPROPRIATE BIT POSITION + MOVNS C + POPJ P, + +PNEXT: AOS (P) ;FOR SKIP RETURN ON EXPECTED SUCCESS + LSH D,-1 ;CONSIDER NEXT PAGE + CAIGE C,31. ;FINISHED WITH THIS SECTION ? + AOJA C,CPOPJ ;NO, INCREMENT AND CONTINUE + MOVEM E,PMAP(B) ;REPLACE BIT MASK + SETZ C, + CAIGE B,7. ;LAST SECTION ? + AOJA B,PINIT ;NO, INCREMENT AND CONTINUE + SOS (P) ;YES, UNDO SKIP RETURN + POPJ P, + +FPLOSS: FATAL PAGE LOSSAGE + +PGINT: MOVEI B,HIBOT ;INITIALIZE MUDDLE'S PAGE MAP TABLE + IDIVI B,2000 ;FIRST PAGE OF PURE CODE + MOVE C,HITOP + IDIVI C,2000 + MOVEI A,(C)+1 + SUBI A,(B) ;NUMBER OF SUCH PAGES + PUSHJ P,PGTAKE ;MARK THESE PAGES AS TAKEN + POPJ P, +; USER GARBAGE COLLECTOR INTERFACE + +MFUNCTION GC,SUBR + ENTRY + + JUMPGE AB,GC1 + CAMGE AB,[-4,,0] + JRST TMA + PUSHJ P,GETFIX ; GET FREEE MIN IF GIVEN + MOVEM A,FREMIN + ADD AB,[2,,2] ; NEXT ARG + JUMPGE AB,GC1 ; NOT SUPPLIED + PUSHJ P,GETFIX ; GET FREDIF + MOVEM A,FREDIF +GC1: PUSHJ P,COMPRM ; GET CURRENT USED CORE + PUSH P,A + MOVEI A,1 + MOVEM A,GCHAIR ; FORCE FLUSH OF VALS ASSOCS + MOVE C,[11,,0] ; INDICATOR FOR AGC + PUSHJ P,AGC ; COLLECT THAT TRASH + SKIPGE A ; SKIP IF OK + PUSHJ P,FULLOS ; COMPLAIN ABOUT LACK OF SPACE + PUSHJ P,COMPRM ; HOW MUCH ROOM NOW? + POP P,B ; RETURN AMOUNT + SUB B,A + MOVSI A,TFIX + JRST FINIS + + +COMPRM: MOVE A,PARTOP ; USED SPACE + SUB A,PARBOT + ADD A,VECTOP + SUB A,VECBOT + POPJ P, + +MFUNCTION GCDMON,SUBR,[GC-MON] + + ENTRY 1 + + SETZM GCMONF ; ASSUME FALSE + GETYP 0,(AB) + CAIE 0,TFALSE + SETOM GCMONF + MOVE A,(AB) + MOVE B,1(AB) + JRST FINIS +.GLOBAL EVATYP,APLTYP,PRNTYP + + MFUNCTION BLOAT,SUBR + ENTRY + + MOVEI C,0 ; FLAG TO SAY WHETHER NEED A GC + MOVSI E,-NBLO ; AOBJN TO BLOATER TABLE + +BLOAT2: JUMPGE AB,BLOAT1 ; ALL DONE? + PUSHJ P,NXTFIX ; GET NEXT BLOAT PARAM + PUSHJ P,@BLOATER(E) ; DISPATCH + AOBJN E,BLOAT2 ; COUNT PARAMS SET + + JUMPL AB,TMA ; ANY LEFT...ERROR +BLOAT1: JUMPE C,BLOATD ; DONE, NO GC NEEDED + MOVEI 0,1 + MOVEM 0,GCHAIR ; FORCE HAIR TO OCCUR + MOVE C,E ; MOVE IN INDICATOR + HRLI C,1 ; INDICATE THAT IT COMES FROM BLOAT + PUSHJ P,AGC ; DO ONE + SKIPGE A + PUSHJ P,FULLOS ; NO CORE LEFT + SKIPE A,TPBINC ; SMASH POINNTERS + ADDM A,TPBASE+1(PVP) + SKIPE A,GLBINC ; GLOBAL SP + ADDM A,GLOBASE+1(TVP) + SKIPE A,TYPINC + ADDM A,TYPBOT+1(TVP) + SETZM TPBINC ; RESET PARAMS + SETZM GLBINC + SETZM TYPINC + +BLOATD: MOVE B,VECBOT + SUB B,PARTOP + MOVSI A,TFIX ; RETURN CORE FOUND + JRST FINIS + +; TABLE OF BLOAT ROUTINES + +BLOATER: + MAINB + TPBLO + LOBLO + GLBLO + TYBLO + STBLO + PBLO + SFREM + SFRED + SLVL + SGVL + STYP + SSTO + NBLO==.-BLOATER + +; BLOAT MAIN STORAGE AREA + +MAINB: MOVE D,VECBOT ; COMPUTE CURRENT ROOM + SUB D,PARTOP + CAMGE A,D ; NEED MORE? + POPJ P, ; NO, LEAVE + MOVEM A,GETNUM ; SAVE + AOJA C,CPOPJ ; LEAVE SETTING C + +; BLOAT TP STACK (AT TOP) + +TPBLO: HLRE D,TP ; GET -SIZE + MOVNS B,D + ADDI D,1(TP) ; POINT TO DOPE (ALMOST) + CAME D,TPGROW ; BLOWN? + ADDI D,PDLBUF ; POINT TO REAL DOPE WORD + CAMG A,B ; SKIP IF GROWTH NEEDED + POPJ P, + ASH A,-6 ; CONVERT TO 64 WD BLOCKS + CAILE A,377 + JRST OUTRNG + DPB A,[111100,,-1(D)] ; SMASH SPECS IN + AOJA C,CPOPJ + +; BLOAT TOP LEVEL LOCALS + +LOBLO: IMULI A,6 ; 6 WORDS PER BINDING + HRRZ 0,TPBASE+1(PVP) + HRRZ B,SPBASE+1(PVP) ; ROOM AVAIL TO E + SUB B,0 + SUBI A,(B) ; HOW MUCH MORE? + JUMPLE A,CPOPJ ; NONE NEEDED + MOVEI B,TPBINC + PUSHJ P,NUMADJ + DPB A,[1100,,-1(D)] ; SMASH + AOJA C,CPOPJ + +; GLOBAL SLOT GROWER + +GLBLO: ASH A,2 ; 4 WORDS PER VAR + MOVE D,GLOBASE+1(TVP) ; CURRENT LIMITS + HRRZ B,GLOBSP+1(TVP) + SUBI B,(D) + SUBI A,(B) ; NEW AMOUNT NEEDED + JUMPLE A,CPOPJ + MOVEI B,GLBINC ; WHERE TO KEEP UPDATE + PUSHJ P,NUMADJ ; FIX NUMBER + HLRE 0,D + SUB D,0 ; POINT TO DOPE + DPB A,[1100,,(D)] ; AND SMASH + AOJA C,CPOPJ + +; HERE TO GROW TYPE VECTOR (AND FRIENDS) + +TYBLO: ASH A,1 ; TWO WORD PER TYPE + HRRZ B,TYPBOT+1(TVP) ; FIND CURRENT ROOM + MOVE D,TYPVEC+1(TVP) + SUBI B,(D) + SUBI A,(B) ; EXTRA NEEDED TO A + JUMPLE A,CPOPJ ; NONE NEEDED, LEAVE + MOVEI B,TYPINC ; WHERE TO STASH SPEC + PUSHJ P,NUMADJ ; FIX NUMBER + HLRE 0,D ; POINT TO DOPE + SUB D,0 + DPB A,[1100,,(D)] + SKIPE D,EVATYP+1(TVP) ; GROW AUX TYPE VECS IF NEEDED + PUSHJ P,SGROW1 + SKIPE D,APLTYP+1(TVP) + PUSHJ P,SGROW1 + SKIPE D,PRNTYP+1(TVP) + PUSHJ P,SGROW1 + AOJA C,CPOPJ + +; HERE TO CREATE STORAGE SPACE + +STBLO: MOVE D,PARBOT ; HOW MUCH NOW HERE + SUB D,CODTOP + SUBI A,(D) ; MORE NEEDED? + JUMPLE A,CPOPJ + MOVEM A,PARNEW ; FORCE PAIR SPACE TO MOVE ON OUT + AOJA C,CPOPJ + +; BLOAT P STACK + +PBLO: HLRE D,P + MOVNS B,D + SUBI D,5 ; FUDGE FOR THIS CALL + SUBI A,(D) + JUMPLE A,CPOPJ + ADDI B,1(P) ; POINT TO DOPE + CAME B,PGROW ; BLOWN? + ADDI B,PDLBUF ; NOPE, POIN TO REAL D.W. + ASH A,-6 ; TO 64 WRD BLOCKS + CAILE A,377 ; IN RANGE? + JRST OUTRNG + DPB A,[111100,,-1(B)] + AOJA C,CPOPJ + +; SET FREMIN + +SFREM: MOVEM A,FREMIN + POPJ P, + +; SET FREDIF + +SFRED: MOVEM A,FREDIF + POPJ P, + +; SET LVAL INCREMENT + +SLVL: IMULI A,6 ; CALCULATE AMOUNT TO GROW B + IDIVI A,64. ; # OF GROW BLOCKS NEEDED + CAIE B,0 ; DOES B HAVE A REMAINDER + ADDI A,1 ; IF SO ADD A BLOCK + MOVEM A,LVLINC + POPJ P, + +; SET GVAL INCREMENT + +SGVL: IDIVI A,16. ; CALCULATE NUMBER OF GROW BLOCKS NEEDED + CAIE B,0 + ADDI A,1 ; COMPENSATE FOR EXTRA + MOVEM A,GVLINC + POPJ P, + +; SET TYPE INCREMENT + +STYP: IDIVI A,32. ; CALCULATE NUMBER OF GROW BLOCKS NEEDED + CAIE B,0 + ADDI A,1 ; COMPENSATE FOR EXTRA + MOVEM A,TYPIC + POPJ P, + +; SET STORAGE INCREMENT + +SSTO: IDIVI A,2000 ; # OF BLOCKS + CAIE B,0 ; REMAINDER? + ADDI A,1 + IMULI A,2000 ; CONVERT BACK TO WORDS + MOVEM A,STORIC + POPJ P, + + +; GET NEXT (FIX) ARG + +NXTFIX: PUSHJ P,GETFIX + ADD AB,[2,,2] + POPJ P, + +; ROUTINE TO GET POS FIXED ARG + +GETFIX: GETYP A,(AB) + CAIE A,TFIX + JRST WRONGT + SKIPGE A,1(AB) + JRST BADNUM + POPJ P, + + +; GET NUMBERS FIXED UP FOR GROWTH FIELDS + +NUMADJ: ADDI A,77 ; ROUND UP + ANDCMI A,77 ; KILL CRAP + MOVE 0,A + MOVNS A ; COMPUTE ADD FACTOR FOR SPEC. POINTER UPDATE + HRLI A,-1(A) + MOVEM A,(B) ; AND STASH IT + MOVE A,0 + ASH A,-6 ; TO 64 WD BLOCKS + CAILE A,377 ; CHECK FIT + JRST OUTRNG + POPJ P, + +; DO SYMPATHETIC GROWTHS + +SGROW1: HLRE 0,D + SUB D,0 + DPB A,[111100,,(D)] + POPJ P, + + ;FUNCTION TO CONSTRUCT A LIST + +MFUNCTION CONS,SUBR + + ENTRY 2 + GETYP A,2(AB) ;GET TYPE OF 2ND ARG + CAIE A,TLIST ;LIST? + JRST WTYP2 ;NO , COMPLAIN + MOVE C,(AB) ; GET THING TO CONS IN + MOVE D,1(AB) + HRRZ E,3(AB) ; AND LIST + PUSHJ P,ICONS ; INTERNAL CONS + JRST FINIS + +; COMPILER CALL TO CONS + +CICONS: SUBM M,(P) + PUSHJ P,ICONS +MPOPJ: SUBM M,(P) + POPJ P, + +; INTERNAL CONS TO NIL--INCONS + +INCONS: MOVEI E,0 + +; INTERNAL CONS--ICONS; C,D VALUE, E CDR + +ICONS: GETYP A,C ; CHECK TYPE OF VAL + PUSHJ P,NWORDT ; # OF WORDS + SOJN A,ICONS1 ; JUMP IF DEFERMENT NEEDED + PUSHJ P,ICELL2 ; NO DEFER, GET 2 WORDS FROM PAIR SPACE + JRST ICONS2 ; NO CORE, GO GC + HRRI C,(E) ; SET UP CDR +ICONS3: MOVEM C,(B) ; AND STORE + MOVEM D,1(B) +TLPOPJ: MOVSI A,TLIST + POPJ P, + +; HERE IF CONSING DEFERRED + +ICONS1: MOVEI A,4 ; NEED 4 WORDS + PUSHJ P,ICELL ; GO GET 'EM + JRST ICONS2 ; NOT THERE, GC + HRLI E,TDEFER ; CDR AND DEFER + MOVEM E,(B) ; STORE + MOVEI E,2(B) ; POINT E TO VAL CELL + HRRZM E,1(B) + MOVEM C,(E) ; STORE VALUE + MOVEM D,1(E) + JRST TLPOPJ + + + +; HERE TO GC ON A CONS + +ICONS2: PUSH TP,C ; SAVE VAL + PUSH TP,D + PUSH TP,$TLIST + PUSH TP,E ; SAVE VITAL STUFF + MOVEM A,GETNUM ; AMOUNT NEEDED + MOVE C,[3,,1] ; INDICATOR FOR AGC + PUSHJ P,AGC ; ATTEMPT TO WIN + SKIPGE A ; SKIP IF WON + PUSHJ P,FULLOS + MOVE D,-2(TP) ; RESTORE VOLATILE STUFF + MOVE C,-3(TP) + MOVE E,(TP) + SUB TP,[4,,4] + JRST ICONS ; BACK TO DRAWING BOARD + +; SUBROUTINE TO ALLOCATE WORDS IN PAIR SPACE. CALLS AGC IF NEEDED + +CELL2: MOVEI A,2 ; USUAL CASE +CELL: PUSHJ P,ICELL ; INTERNAL + JRST .+2 ; LOSER + POPJ P, + + MOVEM A,GETNUM ; AMOUNT REQUIRED + PUSH P,A ; PREVENT AGC DESTRUCTION + MOVE C,[3,,1] ; INDICATOR FOR AGC + PUSHJ P,AGC + SKIPGE A ; SKIP IF WINNER + PUSHJ P,FULLOS ; REPORT TROUBLE + POP P,A + JRST CELL ; AND TRY AGAIN + +; INTERNAL CELL GETTER, SKIPS IF ROO EXISTS, ELSE DOESN'T + +ICELL2: MOVEI A,2 ; MOST LIKELY CAE +ICELL: SKIPE B,RCL + JRST ICELRC ;SEE IF WE CAN RE-USE A RECYCLE CELL + MOVE B,PARTOP ; GET TOP OF PAIRS + ADDI B,(A) ; BUMP + CAMLE B,VECBOT ; SKIP IF OK. + POPJ P, ; LOSE + EXCH B,PARTOP ; SETUP NEW PARTOP AND RETURN POINTER + PUSH P,B ; MODIFY TOTAL # OF FREE WORDS + MOVE B,USEFRE + ADDI B,(A) + MOVEM B,USEFRE + POP P,B + JRST CPOPJ1 ; SKIP RETURN + +ICELRC: CAIE A,2 + JRST ICELL+2 ;IF HE DOESNT WANT TWO, USE OLD METHOD + PUSH P,A + MOVE A,(B) + HRRZM A,RCL + POP P,A + SETZM (B) ;GIVE HIM A CLEAN RECYCLED CELL + SETZM 1(B) + JRST CPOPJ ;THAT IT + +;SUBROUTINES TO RETURN WORDS NEEDED BASED ON TYPE OR SAT + +NWORDT: PUSHJ P,SAT ;GET STORAGE ALLOC TYPE +NWORDS: CAIG A,NUMSAT ; TEMPLATE? + SKIPL MKTBS(A) ;-ENTRY IN TABLE MEANS 2 NEEDED + SKIPA A,[1] ;NEED ONLY 1 + MOVEI A,2 ;NEED 2 + POPJ P, + + ;FUNCTION TO BUILD A LIST OF MANY ELEMENTS + +MFUNCTION LIST,SUBR + ENTRY + + PUSH P,$TLIST +LIST12: HLRE A,AB ;GET -NUM OF ARGS + SKIPE RCL ;SEE IF WE WANT TO DO ONE AT A TIME + JRST LST12R ;TO GET RECYCLED CELLS + MOVNS A ;MAKE IT + + JUMPE A,LISTN ;JUMP IF 0 + PUSHJ P,CELL ;GET NUMBER OF CELLS + PUSH TP,$TAB + PUSH TP,AB + PUSH TP,(P) ;SAVE IT + PUSH TP,B + SUB P,[1,,1] + LSH A,-1 ;NUMBER OF REAL LIST ELEMENTS + +CHAINL: ADDI B,2 ;LOOP TO CHAIN ELEMENTS + HRRZM B,-2(B) ;CHAIN LAST ONE TO NEXT ONE + SOJG A,.-2 ;LOOP TIL ALL DONE + CLEARM B,-2(B) ;SET THE LAST CDR TO NIL + +; NOW LOBEER THE DATA IN TO THE LIST + + MOVE D,AB ; COPY OF ARG POINTER + MOVE B,(TP) ;RESTORE LIS POINTER +LISTLP: GETYP A,(D) ;GET TYPE + PUSHJ P,NWORDT ;GET NUMBER OF WORDS + SOJN A,LDEFER ;NEED TO DEFER POINTER + GETYP A,(D) ;NOW CLOBBER ELEMENTS + HRLM A,(B) + MOVE A,1(D) ;AND VALUE.. + MOVEM A,1(B) +LISTL2: HRRZ B,(B) ;REST B + ADD D,[2,,2] ;STEP ARGS + JUMPL D,LISTLP + + POP TP,B + POP TP,A + SUB TP,[2,,2] ; CLEANUP STACK + JRST FINIS + + +LST12R: ASH A,-1 ;ONE AT A TIME TO GET RECYCLED CELLS + JUMPE A,LISTN + PUSH P,A ;SAVE COUNT ON STACK + SETZB C,D + SETZM E + PUSHJ P,ICONS + MOVE E,B ;LOOP AND CHAIN TOGETHER + AOSGE (P) + JRST .-3 + PUSH TP,-1(P) ;PUSH ON THE TYPE WE WANT + PUSH TP,B + SUB P,[2,,2] ;CLEAN UP AFTER OURSELVES + JRST LISTLP-2 ;AND REJOIN MAIN STREAM + + +; MAKE A DEFERRED POINTER + +LDEFER: PUSH TP,$TLIST ;SAVE CURRENT POINTER + PUSH TP,B + MOVEM D,1(TB) ; SAVE ARG HACKER + PUSHJ P,CELL2 + MOVE D,1(TB) + GETYPF A,(D) ;GET FULL DATA + MOVE C,1(D) + MOVEM A,(B) + MOVEM C,1(B) + MOVE C,(TP) ;RESTORE LIST POINTER + MOVEM B,1(C) ;AND MAKE THIS BE THE VALUE + MOVSI A,TDEFER + HLLM A,(C) ;AND STORE IT + MOVE B,C + SUB TP,[2,,2] + JRST LISTL2 + +LISTN: MOVEI B,0 + POP P,A + JRST FINIS + +; BUILD A FORM + +MFUNCTION FORM,SUBR + + ENTRY + + PUSH P,$TFORM + JRST LIST12 + + ; COMPILERS CALLS TO FORM AND LIST A/ COUNT ELEMENTS ON STACK + +IILIST: SUBM M,(P) + PUSHJ P,IILST + MOVSI A,TLIST + JRST MPOPJ + +IIFORM: SUBM M,(P) + PUSHJ P,IILST + MOVSI A,TFORM + JRST MPOPJ + +IILST: JUMPE A,IILST0 ; NIL WHATSIT + PUSH P,A + MOVEI E,0 +IILST1: POP TP,D + POP TP,C + PUSHJ P,ICONS ; CONS 'EM UP + MOVEI E,(B) + SOSE (P) ; COUNT + JRST IILST1 + + SUB P,[1,,1] + POPJ P, + +IILST0: MOVEI B,0 + POPJ P, + + ;FUNCTION TO BUILD AN IMPLICIT LIST + +MFUNCTION ILIST,SUBR + ENTRY + PUSH P,$TLIST +ILIST2: JUMPGE AB,TFA ;NEED AT LEAST ONE ARG + CAMGE AB,[-4,,0] ;NO MORE THAN TWO ARGS + JRST TMA + PUSHJ P,GETFIX ; GET POS FIX # + JUMPE A,LISTN ;EMPTY LIST ? + CAML AB,[-2,,0] ;ONLY ONE ARG? + JRST LOSEL ;YES + PUSH P,A ;SAVE THE CURRENT VALUE OF LENGTH FOR LOOP ITERATION +ILIST0: PUSH TP,2(AB) + PUSH TP,(AB)3 + MCALL 1,EVAL + PUSH TP,A + PUSH TP,B + SOSLE (P) + JRST ILIST0 + POP P,C +ILIST1: MOVE C,(AB)+1 ;REGOBBLE LENGTH + ACALL C,LIST +ILIST3: POP P,A ; GET FINAL TYPE + JRST FINIS + + +LOSEL: PUSH P,A ; SAVE COUNT + MOVEI E,0 + +LOSEL1: SETZB C,D ; TLOSE,,0 + PUSHJ P,ICONS + MOVEI E,(B) + SOSLE (P) + JRST LOSEL1 + + SUB P,[1,,1] + JRST ILIST3 + +; IMPLICIT FORM + +MFUNCTION IFORM,SUBR + + ENTRY + PUSH P,$TFORM + JRST ILIST2 + + ; IVECTOR AND IUVECTOR--GET VECTOR AND UVECTOR OF COMPUTED VALUES + +MFUNCTION VECTOR,SUBR,[IVECTOR] + + MOVEI C,1 + JRST VECTO3 + +MFUNCTION UVECTOR,SUBR,[IUVECTOR] + + MOVEI C,0 +VECTO3: ENTRY + JUMPGE AB,TFA ; AT LEAST ONE ARG + CAMGE AB,[-4,,0] ; NOT MORE THAN 2 + JRST TMA + PUSHJ P,GETFIX ; GET A POS FIXED NUMBER + LSH A,(C) ; A-> NUMBER OF WORDS + PUSH P,C ; SAVE FOR LATER + PUSHJ P,IBLOCK ; GET BLOCK (TURN ON BIT APPROPRIATELY) + POP P,C + HLRE A,B ; START TO + SUBM B,A ; FIND DOPE WORD + JUMPE C,VECTO4 + MOVSI D,400000 ; GET NOT UNIFORM BIT + MOVEM D,(A) ; INTO DOPE WORD + SKIPA A,$TVEC ; GET TYPE +VECTO4: MOVSI A,TUVEC + CAML AB,[-2,,0] ; SKIP IF ARGS NEED TO BE HACKED + JRST FINIS + JUMPGE B,FINIS ; DON'T EVAL FOR EMPTY CASE + + PUSH TP,A ; SAVE THE VECTOR + PUSH TP,B + PUSH TP,A + PUSH TP,B + + JUMPE C,UINIT + JUMPGE B,FINIS ; EMPTY VECTOR, LEAVE +INLP: PUSHJ P,IEVAL ; EVAL EXPR + MOVEM A,(C) + MOVEM B,1(C) + ADD C,[2,,2] ; BUMP VECTOR + MOVEM C,(TP) + JUMPL C,INLP ; IF MORE DO IT + +GETVEC: MOVE A,-3(TP) + MOVE B,-2(TP) + SUB TP,[4,,4] + JRST FINIS + +; HERE TO FILL UP A UVECTOR + +UINIT: PUSHJ P,IEVAL ; HACK THE 1ST VALUE + GETYP A,A ; GET TYPE + PUSH P,A ; SAVE TYPE + PUSHJ P,NWORDT ; SEE IF IT CAN BE UNIFORMED + SOJN A,CANTUN ; COMPLAIN +STJOIN: MOVE C,(TP) ; RESTORE POINTER + ADD C,1(AB) ; POINT TO DOPE WORD + MOVE A,(P) ; GET TYPE + HRLZM A,(C) ; STORE IN D.W. + MOVE C,(TP) ; GET BACK VECTOR + SKIPE 1(AB) + JRST UINLP1 ; START FILLING UV + JRST GETVE1 + +UINLP: MOVEM C,(TP) ; SAVE PNTR + PUSHJ P,IEVAL ; EVAL THE EXPR + GETYP A,A ; GET EVALED TYPE + CAIE A,@(P) ; WINNER? + JRST WRNGSU ; SERVICE ERROR FOR UVECTOR,STORAGE +UINLP1: MOVEM B,(C) ; STORE + AOBJN C,UINLP +GETVE1: SUB P,[1,,1] + JRST GETVEC ; AND RETURN VECTOR + +IEVAL: PUSH TP,2(AB) + PUSH TP,3(AB) + MCALL 1,EVAL + MOVE C,(TP) + POPJ P, + +; ISTORAGE -- GET STORAGE OF COMPUTED VALUES + +MFUNCTION ISTORAGE,SUBR + ENTRY + JUMPGE AB,TFA + CAMGE AB,[-4,,0] ; AT LEAST ONE ARG + JRST TMA + PUSHJ P,GETFIX ; POSITIVE COUNT FIRST ARG + PUSHJ P,CAFRE ; GET CORE + MOVN B,1(AB) ; -COUNT + HRL A,B ; PUT IN LHW (A) + MOVM B,B ; +COUNT + HRLI B,2(B) ; LENGTH + 2 + ADDI B,(A) ; MAKE POINTER TO DOPE WORDS + HLLZM B,1(B) ; PUT TOTAL LENGTH IN 2ND DOPE + HRRM A,1(B) ; PUT ADDRESS IN RHW (STORE DOES THIS TOO). + MOVE B,A + MOVSI A,TSTORAGE + CAML AB,[-2,,0] ; SECOND ARG TO EVAL? + JRST FINIS ; IF NOT, RETURN EMPTY + PUSH TP,A + PUSH TP,B + PUSH TP,A + PUSH TP,B + PUSHJ P,IEVAL ; EVALUATE FOR FIRST VALUE + GETYP A,A + PUSH P,A ; FOR COMPARISON LATER + PUSHJ P,SAT + CAIN A,S1WORD + JRST STJOIN ;TREAT LIKE A UVECTOR + ; IF NOT 1-WORD TYPES, CANNOT STORE, SO COMPLAIN + PUSHJ P,FREESV ; FREE STORAGE VECTOR + PUSH TP,$TATOM + PUSH TP,EQUOTE DATA-CAN'T-GO-IN-STORAGE + JRST CALER1 + +; FOR STORAGE, MUST FREE THE CORE ELSE IT IS LOST (NO GC) +FREESV: MOVE A,1(AB) ; GET COUNT + ADDI A,2 ; FOR DOPE + HRRZ B,(TP) ; GET ADDRESS + PUSHJ P,CAFRET ; FREE THE CORE + POPJ P, + + ; INTERNAL VECTOR ALLOCATOR. A/SIZE OF VECTOR (NOT INCLUDING DOPE WORDS) + +IBLOK1: ASH A,1 ; TIMES 2 +GIBLOK: TLOA A,400000 ; FUNNY BIT +IBLOCK: TLZ A,400000 ; NO BIT ON + ADDI A,2 ; COMPENSATE FOR DOPE WORDS +IBLOK2: MOVE B,VECBOT ; POINT TO BOTTOM OF SPACE + SUBI B,(A) ; SUBTRACT NEEDED AMOUNT + CAMGE B,PARTOP ; SKIP IF NO GC NEEDED + JRST IVECT1 + EXCH B,VECBOT ; WIN, GET POINTER TO BLOCK AND UPDATE VECBOT + PUSH P,B + MOVE B,USEFRE + ADDI B,(A) + MOVEM B,USEFRE + POP P,B + HRLZM A,-1(B) ; STORE LENGTH IN DOPE WORD + HLLZM A,-2(B) ; AND BIT + HRRO B,VECBOT ; POINT TO START OF VECTOR + TLC B,-3(A) ; SETUP COUNT + HRRI A,TVEC + SKIPL A + HRRI A,TUVEC + MOVSI A,(A) + POPJ P, + +; HERE TO DO A GC ON A VECTOR ALLOCATION + +IVECT1: PUSH P,A ; SAVE DESIRED LENGTH + HRRZM A,GETNUM ; AND STORE AS DESIRED AMOUNT + MOVE C,[4,,1] ; GET INDICATOR FOR AGC + PUSHJ P,AGC + SKIPGE A + PUSHJ P,FULLOS ; LOST, COMPLAIN + POP P,A + JRST IBLOK2 + + +; INTERNAL EVECTOR (CALLED FROM READ) A/ #OF THINGS +; ITEMS ON TOP OF STACK + +IEVECT: ASH A,1 ; TO NUMBER OF WORDS + PUSH P,A + PUSHJ P,IBLOCK ; GET VECTOR + HLRE D,B ; FIND DW + SUBM B,D ; A POINTS TO DW + MOVSI 0,400000 + MOVEM 0,(D) ; CLOBBER NON UNIF BIT + POP P,A ; RESTORE COUNT + JUMPE A,IVEC1 ; 0 LNTH, DONE + MOVEI C,(TP) ; BUILD BLT + SUBI C,(A)-1 ; C POINTS TO 1ST ITEM ON STACK + MOVSI C,(C) + HRRI C,(B) ; B/ SOURCE,,DEST + BLT C,-1(D) ; XFER THE DATA + HRLI A,(A) + SUB TP,A ; FLUSH STACKAGE +IVEC1: MOVSI A,TVEC + POPJ P, + + +; COMPILERS CALL + +CIVEC: SUBM M,(P) + PUSHJ P,IEVECT + JRST MPOPJ + + + ; INTERNAL CALL TO EUVECTOR + +IEUVEC: PUSH P,A ; SAVE LENGTH + PUSHJ P,IBLOCK + MOVE A,(P) + JUMPE A,IEUVE1 ; EMPTY, LEAVE + ASH A,1 ; NOW FIND STACK POSITION + MOVEI C,(TP) ; POINT TO TOP + MOVE D,B ; COPY VEC POINTER + SUBI C,-1(A) ; POINT TO 1ST DATUM + GETYP A,(C) ; CHECK IT + PUSHJ P,NWORDT + SOJN A,CANTUN ; WONT FIT + GETYP E,(C) + +IEUVE2: GETYP 0,(C) ; TYPE OF EL + CAIE 0,(E) ; MATCH? + JRST WRNGUT + MOVE 0,1(C) + MOVEM 0,(D) ; CLOBBER + ADDI C,2 + AOBJN D,IEUVE2 ; LOOP + HRLZM E,(D) ; STORE UTYPE +IEUVE1: POP P,A ; GET COUNY + ASH A,1 ; MUST FLUSH 2 TIMES # OF ELEMENTS + HRLI A,(A) + SUB TP,A ; CLEAN UP STACK + MOVSI A,TUVEC + POPJ P, + +; COMPILER'S CALL + +CIUVEC: SUBM M,(P) + PUSHJ P,IEUVEC + JRST MPOPJ + +MFUNCTION EVECTOR,SUBR,[VECTOR] + ENTRY + HLRE A,AB + MOVNS A + PUSH P,A ;SAVE NUMBER OF WORDS + PUSHJ P,IBLOCK ; GET WORDS + MOVEI D,-1(B) ; SETUP FOR BLT AND DOPE CLOBBER + JUMPGE B,FINISV ;DONT COPY A ZERO LENGTH VECTOR + + HRLI C,(AB) ;START BUILDING BLT POINTER + HRRI C,(B) ;TO ADDRESS + ADDI D,@(P) ;SET D TO FINAL ADDRESS + BLT C,(D) +FINISV: MOVSI 0,400000 + MOVEM 0,1(D) ; MARK AS GENERAL + SUB P,[1,,1] + MOVSI A,TVEC + JRST FINIS + + + + ;EXPLICIT VECTORS FOR THE UNIFORM CSE + +MFUNCTION EUVECTOR,SUBR,[UVECTOR] + + ENTRY + HLRE A,AB ;-NUM OF ARGS + MOVNS A + ASH A,-1 ;NEED HALF AS MANY WORDS + PUSH P,A + JUMPGE AB,EUV1 ; DONT CHECK FOR EMPTY + GETYP A,(AB) ;GET FIRST ARG + PUSHJ P,NWORDT ;SEE IF NEEDS EXTRA WORDS + SOJN A,CANTUN +EUV1: POP P,A + PUSHJ P,IBLOCK ; GET VECT + JUMPGE B,FINISU + + GETYP C,(AB) ;GET THE FIRST TYPE + MOVE D,AB ;COPY THE ARG POINTER + MOVE E,B ;COPY OF RESULT + +EUVLP: GETYP 0,(D) ;GET A TYPE + CAIE 0,(C) ;SAME? + JRST WRNGUT ;NO , LOSE + MOVE 0,1(D) ;GET GOODIE + MOVEM 0,(E) ;CLOBBER + ADD D,[2,,2] ;BUMP ARGS POINTER + AOBJN E,EUVLP + + HRLM C,(E) ;CLOBBER UNIFORM TYPE IN +FINISU: MOVSI A,TUVEC + JRST FINIS + +WRNGSU: GETYP A,-1(TP) + CAIE A,TSTORAGE + JRST WRNGUT ;IF UVECTOR + PUSHJ P,FREESV ;FREE STORAGE VECTOR + PUSH TP,$TATOM + PUSH TP,EQUOTE TYPES-DIFFER-IN-STORAGE-OBJECT + JRST CALER1 + + +WRNGUT: PUSH TP,$TATOM + PUSH TP,EQUOTE TYPES-DIFFER-IN-UNIFORM-VECTOR + JRST CALER1 + +CANTUN: PUSH TP,$TATOM + PUSH TP,EQUOTE DATA-CANT-GO-IN-UNIFORM-VECTOR + JRST CALER1 + +BADNUM: PUSH TP,$TATOM + PUSH TP,EQUOTE NEGATIVE-ARGUMENT + JRST CALER1 + ; FUNCTION TO GROW A VECTOR + +MFUNCTION GROW,SUBR + + ENTRY 3 + + MOVEI D,0 ;STACK HACKING FLAG + GETYP A,(AB) ;FIRST TYPE + PUSHJ P,SAT ;GET STORAGE TYPE + GETYP B,2(AB) ;2ND ARG + CAIE A,STPSTK ;IS IT ASTACK + CAIN A,SPSTK + AOJA D,GRSTCK ;YES, WIN + CAIE A,SNWORD ;UNIFORM VECTOR + CAIN A,S2NWORD ;OR GENERAL +GRSTCK: CAIE B,TFIX ;IS 2ND FIXED + JRST WTYP2 ;COMPLAIN + GETYP B,4(AB) + CAIE B,TFIX ;3RD ARG + JRST WTYP3 ;LOSE + + MOVEI E,1 ;UNIFORM/GENERAL FLAG + CAIE A,SNWORD ;SKIP IF UNIFORM + CAIN A,SPSTK ;DONT SKIP IF UNIFORM PDL + MOVEI E,0 + + HRRZ B,1(AB) ;POINT TO START + HLRE A,1(AB) ;GET -LENGTH + SUB B,A ;POINT TO DOPE WORD + SKIPE D ;SKIP IF NOT STACK + ADDI B,PDLBUF ;FUDGE FOR PDL + HLLZS (B) ;ZERO OUT GROWTH SPECS + SKIPN A,3(AB) ;ANY TOP GROWTH? + JRST GROW1 ;NO, LOOK FOR BOTTOM GROWTH + ASH A,(E) ;MULT BY 2 IF GENERAL + ADDI A,77 ;ROUND TO NEAREST BLOCK + ANDCMI A,77 ;CLEAR LOW ORDER BITS + ASH A,9-6 ;DIVIDE BY 100 AND SHIFT TO POSTION + TRZE A,400000 ;CONVERT TO SIGN MAGNITUDE + MOVNS A + TLNE A,-1 ;SKIP IF NOT TOO BIG + JRST GTOBIG ;ERROR +GROW1: SKIPN C,5(AB) ;CHECK LOW GROWTH + JRST GROW4 ;NONE, SKIP + ASH C,(E) ;GENRAL FUDGE + ADDI C,77 ;ROUND + ANDCMI C,77 ;FUDGE FOR VALUE RETURN + PUSH P,C ;AND SAVE + ASH C,-6 ;DIVIDE BY 100 + TRZE C,400 ;CONVERT TO SIGN MAGNITUDE + MOVNS C + TDNE C,[-1,,777000] ;CHECK FOR OVERFLOW + JRST GTOBIG +GROW2: HLRZ E,1(B) ;GET TOTAL LENGTH OF VECTOR + MOVNI E,-1(E) + HRLI E,(E) ;TO BOTH HALVES + ADDI E,1(B) ;POINTS TO TOP + SKIPE D ;STACK? + ADD E,[PDLBUF,,0] ;YES, FUDGE LENGTH + SKIPL D,(P) ;SHRINKAGE? + JRST GROW3 ;NO, CONTINUE + MOVNS D ;PLUSIFY + HRLI D,(D) ;TO BOTH HALVES + ADD E,D ;POINT TO NEW LOW ADDR +GROW3: IORI A,(C) ;OR TOGETHER + HRRM A,(B) ;DEPOSIT INTO DOPEWORD + PUSH TP,(AB) ;PUSH TYPE + PUSH TP,E ;AND VALUE + JUMPE A,.+3 ;DON'T GC FOR NOTHING + MOVE C,[2,,0] ; GET INDICATOR FOR AGC + PUSHJ P,AGC + JUMPL A,GROFUL + POP P,C ;RESTORE GROWTH + HRLI C,(C) + POP TP,B ;GET VECTOR POINTER + SUB B,C ;POINT TO NEW TOP + POP TP,A + JRST FINIS + +GROFUL: SUB P,[1,,1] ; CLEAN UP STACK + SUB TP,[2,,2] + PUSHJ P,FULLOS + JRST GROW + +GTOBIG: PUSH TP,$TATOM + PUSH TP,EQUOTE ATTEMPT-TO-GROW-VECTOR-TOO-MUCH + JRST CALER1 +GROW4: PUSH P,[0] ;0 BOTTOM GROWTH + JRST GROW2 + +FULLOS: PUSH TP,$TATOM ; GENERATE ERROR + PUSH TP,@ERRTB(A) + AOJL A,CALER1 ; IF BAD, CALL ERROR + SKIPN GCMONF + POPJ P, + PUSH TP,TTOCHN(TVP) ; FORCE MESSAGES TO TTY + PUSH TP,TTOCHN+1(TVP) + PUSH TP,TTOCHN(TVP) ; FORCE MESSAGES TO TTY + PUSH TP,TTOCHN+1(TVP) + MCALL 1,TERPRI ; JUST PRINT MESSAGE + MCALL 2,PRINC + POPJ P, + + + EQUOTE STILL-NO-STORAGE + EQUOTE NO-STORAGE + EQUOTE STORAGE-LOW +ERRTB==. + ; SUBROUTINE TO BUILD CHARACTER STRING GOODIES + +MFUNCTION STRING,SUBR + + ENTRY + + MOVE B,AB ;COPY ARG POINTER + MOVEI C,0 ;INITIALIZE COUNTER + PUSH TP,$TAB ;SAVE A COPY + PUSH TP,B + HLRE A,B ; GET # OF ARGS + MOVNS A + ASH A,-1 ; 1/2 FOR # OF ARGS + PUSHJ P,IISTRN + JRST FINIS + +IISTRN: SKIPN E,A ; SKIP IF ARGS EXIST + JRST MAKSTR ; ALL DONE + +STRIN2: GETYP D,(B) ;GET TYPE CODE + CAIN D,TCHRS ;SINGLE CHARACTER? + AOJA C,STRIN1 + CAIE D,TCHSTR ;OR STRING + JRST WRONGT ;NEITHER + HRRZ D,(B) ; GET CHAR COUNT + ADDI C,(D) ; AND BUMP + +STRIN1: ADD B,[2,,2] + SOJG A,STRIN2 + +; NOW GET THE NECESSARY VECTOR + +MAKSTR: PUSH P,C ; SAVE CHAR COUNT + PUSH P,E ; SAVE ARG COUNT + MOVEI A,4(C) ; LNTH+4 TO A + IDIVI A,5 + PUSHJ P,IBLOCK + + POP P,A + JUMPGE B,DONEC ; 0 LENGTH, NO STRING + HRLI B,440700 ;CONVERT B TO A BYTE POINTER + MOVE C,(TP) ; POINT TO ARGS AGAIN + +NXTRG1: GETYP D,(C) ;GET AN ARG + CAIE D,TCHRS + JRST TRYSTR + MOVE D,1(C) ; GET IT + IDPB D,B ;AND DEPOSIT IT + JRST NXTARG + +TRYSTR: MOVE E,1(C) ;GET BYTER + HRRZ 0,(C) ;AND COUNT +NXTCHR: SOJL 0,NXTARG ; IF RUNOUT, GET NEXT ARG + ILDB D,E ;AND GET NEXT + IDPB D,B ; AND DEPOSIT SAME + JRST NXTCHR + +NXTARG: ADD C,[2,,2] ;BUMP ARG POINTER + SOJG A,NXTRG1 + ADDI B,1 + +DONEC: MOVSI C,TCHRS + HLLM C,(B) ;AND CLOBBER AWAY + HLRZ C,1(B) ;GET LENGTH BACK + POP P,A + HRLI A,TCHSTR + SUBI B,-2(C) + HRLI B,440700 ;MAKE A BYTE POINTER + POPJ P, + +; COMPILER'S CALL TO MAKE A STRING + +CISTNG: SUBM M,(P) + MOVEI C,0 ; INIT CHAR COUNTER + MOVEI B,(A) ; SET UP STACK POINTER + ASH B,1 ; * 2 FOR NO. OF SLOTS + HRLI B,(B) + SUBM TP,B ; B POINTS TO ARGS + ADD B,[1,,1] + PUSH TP,$TTP + PUSH TP,B + PUSHJ P,IISTRN ; MAKE IT HAPPEN + POP TP,TP ; FLUSH ARGS + SUB TP,[1,,1] + JRST MPOPJ + ;BUILD IMPLICT STRING + +MFUNCTION ISTRING,SUBR + + ENTRY + JUMPGE AB,TFA ; TOO FEW ARGS + CAMGE AB,[-4,,0] ; VERIFY NOT TOO MANY ARGS + JRST TMA + PUSHJ P,GETFIX + ADDI A,4 + IDIVI A,5 ; # OF WORDS NEEDED TO A + PUSH TP,$TFIX + PUSH TP,A + MCALL 1,UVECTOR ; GET SAME + HLRE C,B ; -LENGTH TO C + SUBM B,C ; LOCN OF DOPE WORD TO C + HRLI D,TCHRS ; CLOBBER ITS TYPE + HLLM D,(C) + MOVSI A,TCHSTR + HRR A,1(AB) ; SETUP TYPE'S RH + HRLI B,440700 ; AND BYTE POINTER + SKIPE (AB)+1 ; SKIP IF NO CHARACTERS TO DEPOSIT + CAML AB,[-2,,0] ; SKIP IF 2 ARGS GIVEN + JRST FINIS + PUSH TP,A ;SAVE OUR STRING + PUSH TP,B + PUSH TP,A ;SAVE A TEMPORARY CLOBBER POINTER + PUSH TP,B + PUSH P,(AB)1 ;SAVE COUNT +CLOBST: PUSH TP,(AB)+2 + PUSH TP,(AB)+3 + MCALL 1,EVAL + GETYP C,A ; CHECK IT + CAIE C,TCHRS ; MUST BE A CHARACTER + JRST WTYP2 + IDPB B,(TP) ;CLOBBER + SOSLE (P) ;FINISHED? + JRST CLOBST ;NO + SUB P,[1,,1] + SUB TP,[4,,4] + MOVE A,(TP)+1 + MOVE B,(TP)+2 + JRST FINIS + + + AGC": +;SET FLAG FOR INTERRUPT HANDLER + + SETZB M,RCL ; CLEAR OUT RECYCLE LIST CELLS, AND RSUBR BASE PNTR + PUSH P,B + PUSH P,A + PUSH P,C ; SAVE C + PUSHJ P,CTIME ; GET TIME FOR GIN-GOUT + MOVEM B,GCTIM ; SAVE FOR LATER + MOVEI B,[ASCIZ /GIN /] + SKIPE GCMONF + PUSHJ P,MSGTYP +NOMON1: HRRZ C,(P) ; GET CAUSE OF GC INDICATOR + MOVE B,GCNO(C) ; ADD 1 TO COUNT OF GC'S CAUSED BY GIVEN REASON + ADDI B,1 + MOVEM B,GCNO(C) + MOVEM C,GCCAUS ; SAVE CAUSE OF GC + SKIPN GCMONF ; MONITORING + JRST NOMON2 + MOVE B,MSGGCT(C) ; GET CAUSE MESSAGE + PUSHJ P,MSGTYP +NOMON2: HLRZ C,(P) ; FIND OUT WHO CAUSED THE GC + MOVEM C,GCCALL ; SAVE CALLER OF GC + SKIPN GCMONF ; MONITORING + JRST NOMON3 + MOVE B,MSGGFT(C) + PUSHJ P,MSGTYP +NOMON3: SUB P,[1,,1] ; POP OFF C + POP P,A + POP P,B + JRST .+1 +AAGC: SETZB M,RCL ; ALTERNATE GC-ENTRY POINT FOR INITIALIZATION +INITGC: SETOM GCFLG + +;SAVE AC'S + IRP AC,,[0,A,B,C,D,E,P,R,M,SP,TP,TB,AB,TVP,PVP] + MOVEM AC,AC!STO"+1(PVP) + TERMIN + +; FUDGE NOWFRE FOR LATER WINNING + + MOVE 0,NOWFRE + SUB 0,VECBOT + ADD 0,PARTOP + MOVEM 0,NOWFRE + +; IF IN A PURE RSUBR, FIND ITS LENGTH AND FUDGE ITS LRU + + HRRZ A,FSAV(TB) ; GET NAME OF CURRENT GOODIE + SETZM CURPLN ; CLEAR FOR NONE + CAML A,PURTOP ; IF LESS THAN TOP OF PURE ASSUME RSUBR + JRST NRSUBR + GETYP 0,(A) ; SEE IF PURE + CAIE 0,TPCODE ; SKIP IF IT IS + JRST NRSUBR + HLRZ B,1(A) ; GET SLOT INDICATION + ADD B,PURVEC+1(TVP) ; POINT TO SLOT + HRROS 2(B) ; MUNG AGE + HLRE A,1(B) ; - LENGTH TO A + MOVNM A,CURPLN ; AND STORE +NRSUBR: + +;SET UP E TO POINT TO TYPE VECTOR + GETYP E,TYPVEC(TVP) + CAIE E,TVEC + JRST AGCE1 + HRRZ TYPNT,TYPVEC+1(TVP) + HRLI TYPNT,B + +CHPDL: MOVE D,P ; SAVE FOR LATER + MOVE P,GCPDL ;GET GC'S PDL +CORGET: MOVE A,P.TOP ; UPDATE CORTOP + MOVEM A,CORTOP + MOVE A,VECTOP ; ROOM BETWEEN CORTOP AND VECTOP IS GC MARK PDL + SUB A,CORTOP + MOVSS A ; BUILD A PDL POINTER + ADD A,VECTOP + JUMPGE A,TRYCOR ; NO ROOM, GO GET SOME + MOVE P,A ; SET UP PDL POINTER + +;FENCE POST PDLS AND CHECK IF ANY SHOULD BE SHRUNK + + MOVEI A,(TB) ;POINT TO CURRENT FRAME IN PROCESS + PUSHJ P,FRMUNG ;AND MUNG IT + MOVE A,TP ;THEN TEMPORARY PDL + PUSHJ P,PDLCHK + MOVE A,PSTO+1(PVP) ;AND UNMARKED P STACK + PUSHJ P,PDLCHP + + ; FIRST CREATE INFERIOR TO HOLD NEW PAGES + +INFCRT: MOVE A,PARBOT ; GENERATE NEW PARBOT AND PARNEW + ADD A,PARNEW + ADDI A,1777 + ANDCMI A,1777 ; EVEN PAGE BOUNDARY + HRRM A,BOTNEW ; INTO POINTER WORD + MOVEM A,WNDBOT + MOVEI 0,2000(A) ; BOUNDS OF WINDOW + MOVEM 0,WNDTOP + SUB A,PARBOT + MOVEM A,PARNEW ; FIXED UP PARNEW + HRRZ A,BOTNEW ; GET PAGE TO START INF AT + ASH A,-10. ; TO PAGES + PUSHJ P,%GCJOB ; GET PAGE HOLDER + MOVSI FPTR,-2000 ; FIX UP FRONTIER POINTER + +;MARK PHASE: MARK ALL LISTS AND VECTORS +;POINTED TO WITH ONE BIT IN SIGN BIT +;START AT TRANSFER VECTOR + + SETZB LPVP,VECNUM ;CLEAR NUMBER OF VECTOR WORDS + SETZB PARNUM ;CLEAR NUMBER OF PAIRS + MOVEI 0,NGCS ; SEE IF NEED HAIR + SOSGE GCHAIR + MOVEM 0,GCHAIR ; RESUME COUNTING + SETZM GREW ; ASSUME NO GROW/SHRINK + SETZM SHRUNK + MOVSI D,400000 ;SIGN BIT FOR MARKING + MOVE A,ASOVEC+1(TVP) ;MARK ASSOC. VECTOR NOW + PUSHJ P,PRMRK ; PRE-MARK + MOVE A,GLOBSP+1(TVP) + PUSHJ P,PRMRK + +; HAIR TO DO AUTO CHANNEL CLOSE + + MOVEI 0,N.CHNS-1 ; NUMBER OF CHANNELS + MOVEI A,CHNL1(TVP) ; 1ST SLOT + + SKIPE 1(A) ; NOW A CHANNEL? + SETZM (A) ; DON'T MARK AS CHANNELS + ADDI A,2 + SOJG 0,.-3 + + MOVE A,PVP ;START AT PROCESS VECTOR + MOVEI B,TPVP ;IT IS A PROCESS VECTOR + PUSHJ P,MARK ;AND MARK THIS VECTOR + MOVEI B,TPVP + MOVE A,MAINPR ; MARK MAIN PROCES EVEN IF SWAPPED OUT + PUSHJ P,MARK + +; ASSOCIATION AND VALUE FLUSHING PHASE + + SKIPN GCHAIR ; ONLY IF HAIR + PUSHJ P,VALFLS + + SKIPE GCHAIR ; IF NOT HAIR, DO CHANNELS NOW + PUSHJ P,CHNFLS + +;OPTIONAL RETIMING PHASE +;THIS HAS BEEN FLUSHED BECAUSE OF PLANNER + REPEAT 0,[ + SKIPE A,TIMOUT ;ANY TIME OVERFLOWS + PUSHJ P,RETIME ;YES, RE-CALIBRATE THEM +] +;UPDATE PARTOP + + MOVEI A,@BOTNEW + SUB A,PARNEW + MOVEM A,PARTOP + +;CORE ADJUSTMENT PHASE + MOVE P,GCPDL ; GET A PDL + SETZM CORSET ;CLEAR LATER CORE SETTING + PUSHJ P,CORADJ ;AND MAKE CORE ADJUSTMENTS + +;RELOCATION ESTABLISHMENT PHASE +;1 -- IN VECTOR SPACE, ESTABLISH POINTERS TO TOP OF CORE + MOVE A,VECTOP" ;START AT TOP OF VECTOR SPACE + MOVE B,VECNEW" ;AND SET TO INITIAL OFFSET + SUBI A,1 ;POINT TO DOPE WORDS + ADDI B,(A) ; WHERE TOP VECTOR WILL GO + PUSHJ P,VECREL ;AND ESTABLISH RELOCATION FOR VECTORS + SUBI B,(A) ; RE-RELATIVIZE VECNEW + MOVEM B,VECNEW ;SAVE FINAL OFFSET + + + ; MAP NEW PAIR SPACE IN FOR PAIR SPACE UPDATE + + MOVE B,PARTOP ; POINT TO TOP OF PAIRS + ADDI B,2000 + ANDCMI B,1777 + CAMGE B,VECBOT ; OVERLAP VECTORS + JRST DOMAP + MOVE C,VECBOT + ANDI C,1777 ; REL TO PAGE + ADDI C,FRONT ; 1ST DEST WORD + HRL C,VECBOT + BLT C,FRONT+1777 ; MUNG IT + +DOMAP: ASH B,-10. ; TO PAGES + MOVE A,PARBOT + MOVEI C,(A) ; COMPUTE HIS TOP + ADD C,PARNEW + ASH C,-10. + ASH A,-10. + SUBM A,B ; B==> - # OF PAGES + HRLI A,(B) ; AOBJN TO SOURCE AND DEST + MOVE B,A ; IN CASE OF FUNNY + HRRI B,(C) ; MAP HIS POSSIBLE HIGHER OR LOWER PAGES + PUSHJ P,%INFMP ; NOW FLUSH INF AND MAKE HIS CORE MINE + + ;POINTER UPDATE PHASE +;1 -- UPDATE ALL PAIR POINTERS + MOVE A,PARBOT ;START AT BOTTOM OF PAIR SPACE + PUSHJ P,PARUPD ;AND UPDATE ALL PAIR POINTERS + +;2 -- UPDATE ALL VECTORS + MOVE A,VECTOP ;START AT TOP OF VECTOR SPACE + PUSHJ P,VECUPD ;AND UPDATE THE POINTERS + MOVE A,CODTOP ; NOW UPDATE STORAGE STUFF + MOVEI D,0 ; FAKE OUT TO NOT UNMARK + PUSHJ P,STOUP + MOVSI D,400000 + +;3 -- UPDATE THE PVP AC + MOVEI A,PVP-1 ;SET LOC TO POINT TO PVP + MOVE C,PVP ;GET THE DATUM + PUSHJ P,NWRDUP ;AND UPDATE THIS VALUE +;4 -- UPDATE THE MAIN PROCESS POINTER + MOVEI A,MAINPR-1 ;POINT TO MAIN PROCESS POINTER + MOVE C,MAINPR ;GET CONTENTS IN C + PUSHJ P,NWRDUP ;AND UPDATE IT +;DATA MOVEMMENT ANDCLEANUP PHASE + +;1 -- ADJUST FOR SHRINKING VECTORS + MOVE A,VECTOP ;VECTOR SHRINKING PHASE + SKIPE SHRUNK ; SKIP IF NO SHRINKERS + PUSHJ P,VECSH ;GO SHRINK ANY SHRINKERS + +;2 -- MOVE VECTORS (AND LIST ELEMENTS) + MOVE A,VECTOP ;START AT TOP OF VECTOR SPACE + PUSHJ P,VECMOVE ;AND MOVE THE VECTORS + MOVE A,VECNEW ;GET FINAL CHANGE TO VECBOT + ADDM A,VECBOT ;OFFSET VECBOT TO ITS NEW PLACE + MOVE A,CORTOP ;GET NEW VALUE FOR TOP OF VECTOR SPACE + SUBI A,2000 ; FUDGE FOR MARK PDL + MOVEM A,VECTOP ;AND UPDATE VECTOP + +;3 -- CLEANUP VECTORS (NOTE A CONTAINS NEW VECTOP) + + SKIPE GREW ; SKIP IF NO GROWERS + PUSHJ P,VECZER ; + PUSHJ P,STOGC + +;GARBAGE ZEROING PHASE +GARZER: MOVE A,PARTOP ;FIRST WORD OF GARBAGE IS AFTER PAIR SPACE + HRLS A ;GET FIRST ADDRESS IN LEFT HALF + MOVE B,VECBOT ;LAST ADDRESS OF GARBAGE + 1 + CLEARM (A) ;ZERO THE FIRST WORD + ADDI A,1 ;MAKE A A BLT POINTER + BLT A,-1(B) ;AND COPY ZEROES INTO REST OF AREA + +;FINAL CORE ADJUSTMENT + SKIPE A,CORSET ;IFLESS CORE NEEDED + PUSHJ P,CORADL ;GIVE SOME AWAY. + +;NOW REHASH THE ASSOCIATIONS BASED ON NEW VALUES + + PUSHJ P,REHASH + + ;RESTORE AC'S +TRYCOX: MOVE 0,VECBOT + SUB 0,PARTOP + ADDM 0,NOWFRE + SKIPN GCMONF + JRST NOMONO + MOVEI B,[ASCIZ /GOUT /] + PUSHJ P,MSGTYP +NOMONO: IRP AC,,[0,A,B,C,D,E,P,R,M,SP,TP,TB,AB,PVP,TVP] + MOVE AC,AC!STO+1(PVP) + TERMIN +; CLOSING ROUTINE FOR G-C + PUSH P,A ; SAVE AC'C + PUSH P,B + PUSH P,C + PUSH P,D + PUSHJ P,CTIME + PUSHJ P,FIXSEN ; OUTPUT TIME + SKIPN GCMONF + JRST GCCONT + MOVEI A,15 ; OUTPUT C/R LINE-FEED + PUSHJ P,MTYO + MOVEI A,12 + PUSHJ P,MTYO +GCCONT: POP P,D ; RESTORE AC'C + POP P,C + POP P,B + POP P,A + MOVE A,GCDANG ; ERROR LEVELS TO ACS + ADD A,GCDNTG + SETZM GCDANG ; NOW CLEAR SAME + SETZM GCDNTG + JUMPGE A,AGCWIN + SKIPN GCHAIR ; WAS IT A FLUSHER? + JRST AGCWIN ; YES, NO MORE AVAILABLE + MOVEI A,1 + MOVEM A,GCHAIR ; RE-DO WITH HAIR + MOVE A,SPARNW ; RESET PARNEW + MOVEM A,PARNEW + SETZM SPARNW + MOVE C,[11,10.] ; INDICATOR FOR AGC + JRST AGC ; TRY ONCE MORE + +AGCWIN: SETZM PARNEW ;CLEAR FOR NEXT AGC CALL + SETZM GETNUM ;ALSO CLEAR THIS + SETZM GCFLG + + JUMPGE P,RBLDM ; DONT LOSE ON BLOWN PDLS + JUMPGE TP,RBLDM + CAMGE A,[-1] ; SKIP IF GOOD NEWS + JRST RBLDM + SETZM PGROW ; CLEAR GROWTH + SETZM TPGROW + SETOM GCHAPN ; INDICATE A GC HAS HAPPENED + SETOM INTFLG ; AND REQUEST AN INTERRUPT + SETZM GCDOWN + +RBLDM: JUMPGE R,CPOPJ + SKIPGE M,1(R) ; SKIP IF FUNNY + POPJ P, + + HLRS M + ADD M,PURVEC+1(TVP) + SKIPL M,1(M) + POPJ P, + PUSH P,0 + HRRZ 0,1(R) + ADD M,0 + POP P,0 +CPOPJ: POPJ P, + + +AGCE1: FATAL AGC--TYPE VECTOR NOT OF TYPE VECTOR + + ; CONVERSION FROM FLOAT TO DECIMAL. X 100 AND SEND OUT WITH APPROPRIATELY PLACED DECIMAL +; POINT. + +FIXSEN: PUSH P,B ; SAVE TIME + MOVEI B,[ASCIZ /TIME= /] + SKIPE GCMONF + PUSHJ P,MSGTYP ; PRINT OUT MESSAGE + POP P,B ; RESTORE B + FSBR B,GCTIM ; GET TIME ELAPSED + MOVEM B,GCTIM ; SAVE ELAPSED TIME FOR INT-HANDLER + SKIPN GCMONF + POPJ P, + FMPRI B,(100.0) ; CONVERT TO FIX + MULI B,400 + TSC B,B + ASH C,-163.(B) + MOVEI A,1 ; INITIALIZE COUNT OF CHARACTERS FOR PUTTING OUT TIME + PUSH P,C + IDIVI C,10. ; START COUNTING + JUMPLE C,.+2 + AOJA A,.-2 + POP P,C + CAIN A,1 ; SEE IF THERE IS ONLY ONE CHARACTER + JRST DOT1 +FIXOUT: IDIVI C,10. ; RECOVER NUMBER + HRLM D,(P) + SKIPE C + PUSHJ P,FIXOUT + PUSH P,A ; SAVE A + CAIN A,2 ; DECIMAL POINT HERE? + JRST DOT2 +FIX1: HLRZ A,(P)-1 ; GET NUMBER + ADDI A,60 ; MAKE IT A CHARACTER + PUSHJ P,MTYO ; OUT IT GOES + POP P,A + SOJ A, + POPJ P, +DOT1: MOVEI A,". ; OUTPUT DECIMAL POINT AND PADDING 0 + PUSHJ P,MTYO + MOVEI A,"0 + PUSHJ P,MTYO + JRST FIXOUT ; CONTINUE +DOT2: MOVEI A,". ; OUTPUT DECIMAL POINT + PUSHJ P,MTYO + JRST FIX1 + + ; INITIAL CORE ADJUSTMENT TO OBTAIN SPACE +; FOR MARK PHASE PDL + +TRYCOR: MOVEI A,2000 + ADDB A,CORTOP ; TRY AND GET 1 BLOCK + ASH A,-10. + MOVEI E,(A) ; SAVE FOR LOOPER + PUSHJ P,P.CORE ; GET CORE + JRST TRYCO2 ; FAILED, TAKE MORE ACTION + JRST CORGET + +TRYCO2: MOVNI A,2000 ; FIXUP CORTOP + ADDM A,CORTOP +TRYCO3: MOVE 0,TPGROW + ADD 0,PGROW ; 0/ NEQ 0 IF STACK BLEW + SKIPGE TP ; SKIP IF TP BLOWN + SKIPL PSTO+1(PVP) ; SKIP IF P WINS + MOVEI 0,1 + SKIPN 0 + MOVEI B,[ASCIZ / +CORE NEEDED: + TYPE C TO KEEP TRYING + TYPE N TO GET MUDDLE ERROR + TYPE V TO RETURN TO MONITOR +/] + SKIPE 0 + MOVEI B,[ASCIZ / +CORE NEEDED: + TYPE C TO KEEP TRYING + TYPE V TO RETURN TO MONITOR +/] + PUSH P,0 + PUSHJ P,MSGTYP + SETOM GCFLCH ; TELL INTERRUPT HANDLER TO .ITYIC + PUSHJ P,MTYI + PUSHJ P,UPLO ; IN CASE LOWER CASE TYPED + SETZM GCFLCH + POP P,0 + CAIN A,"C + JRST TRYCO4 + CAIN A,"N + JUMPE 0,TRYCO5 + CAIN A,"V + FATAL CORE LOSSAGE + JRST TRYCO3 + +UPLO: CAIL A,"a + CAILE A,"z + POPJ P, + SUBI A,40 + POPJ P, + +TRYCO4: MOVEI A,(E) +TRYCO9: MOVEI B,1 ; SLEEP AND CORE UNTIL WINNAGE + EXCH A,B + PUSHJ P,%SLEEP ; SLEEP A WHILE + EXCH A,B + PUSHJ P,P.CORE + JRST TRYCO9 + + MOVEI B,[ASCIZ / +WIN! +/] + PUSHJ P,MSGTYP + JRST CORGET + +TRYCO5: MOVNI A,3 ; GIVE WORST ERROR RETURN + MOVEM A,GCDANG + JRST TRYCOX + + + ; SUBROUTINE TO CHECK SIZE OF PDLS AND DO FENCEPOSTING + +PDLCHK: JUMPGE A,CPOPJ + HLRE B,A ;GET NEGATIVE COUNT + MOVE C,A ;SAVE A COPY OF PDL POINTER + SUBI A,-1(B) ;LOCATE DOPE WORD PAIR + HRRZS A ; ISOLATE POINTER + CAME A,TPGROW ;GROWING? + ADDI A,PDLBUF ;NO, POINT TO REAL DOPE WORD + HLRZ D,(A) ;GET COUNT FROM DOPE WORD + MOVNS B ;GET POSITIVE AMOUNT LEFT + SUBI D,2(B) ; PDL FULL? + JUMPE D,NOFENC ;YES NO FENCE POSTING + SETOM 1(C) ;CLOBBER TOP WORD + SOJE D,NOFENC ;STILL MORE? + MOVSI D,1(C) ;YES, SET UP TO BLT FENCE POSTS + HRRI D,2(C) + BLT D,-2(A) ;FENCE POST ALL EXCEPT DOPE WORDS + + +NOFENC: CAIG B,TPMAX ;NOW CHECK SIZE + CAIG B,TPMIN + JRST MUNGTP ;TOO BIG OR TOO SMALL + POPJ P, + +MUNGTP: SUBI B,TPGOOD ;FIND DELTA TP +MUNG3: MOVE C,-1(A) ;IS GROWTH ALREADY SPECIFIED + TRNE C,777000 ;SKIP IF NOT + POPJ P, ;ASSUME GROWTH GIVEN WILL WIN + + ASH B,-6 ;CONVERT TO NUMBER OF BLOCKS + JUMPLE B,MUNGT1 + CAILE B,377 ; SKIP IF BELOW MAX + MOVEI B,377 ; ELSE USE MAX + TRO B,400 ;TURN ON SHRINK BIT + JRST MUNGT2 +MUNGT1: MOVMS B + ANDI B,377 +MUNGT2: DPB B,[111100,,-1(A)] ;STORE IN DOPE WORD + POPJ P, + +; CHECK UNMARKED STACK (NO NEED TO FENCE POST) + +PDLCHP: HLRE B,A ;-LENGTH TO B + MOVE C,A + SUBI A,-1(B) ;POINT TO DOPE WORD + HRRZS A ;ISOLATE POINTER + CAME A,PGROW ;GROWING? + ADDI A,PDLBUF ;NO, POINT TO REAL DOPE WORD + MOVMS B ;PLUS LENGTH + HLRZ D,(A) ; D.W. LENGTH + SUBI D,2(B) ; PDL FULL + JUMPE D,NOPF + SETOM 1(C) ; START FENECE POST + SOJE D,NOPF ; 1 WORD? + MOVSI D,1(C) + HRRI D,2(C) + BLT D,-2(A) + +NOPF: CAIG B,PMAX ;TOO BIG? + CAIG B,PMIN ;OR TOO LITTLE + JRST .+2 ;YES, MUNG IT + POPJ P, + SUBI B,PGOOD + JRST MUNG3 + +;THIS ROUTINE MAKES SURE CURRENT FRAME MAKES SENSE +FRMUNG: MOVEM D,PSAV(A) + MOVEM SP,SPSAV(A) + MOVEM TP,TPSAV(A) ;SAVE FOR MARKING + POPJ P, + +; ROUTINE TO PRE MARK SPECIAL HACKS + +PRMRK: SKIPE GCHAIR ; FLUSH IF NO HAIR + POPJ P, + HLRE B,A + SUBI A,(B) ;POINT TO DOPE WORD + HLRZ B,1(A) ; GET LNTH + ADDM B,VECNUM ; AND UPDATE VECNUM + LDB B,[111100,,(A)] ; GET GROWTHS + TRZE B,400 ; SIGN HACK + MOVNS B + ASH B,6 ; TO WORDS + ADDM B,VECNUM + LDB 0,[001100,,(A)] + TRZE 0,400 + MOVNS 0 + ASH 0,6 + ADDM 0,VECNUM + PUSHJ P,GSHFLG ; SET GROW FLAGS + IORM D,1(A) ;AND MARK + POPJ P, + +; SET UP FLAGS FOR OPTIOANAL GROW/SHRINK PHASES + +GSHFLG: SKIPG B + SKIPLE 0 + SETOM GREW + SKIPL B + SKIPGE 0 + SETOM SHRUNK + POPJ P, + + ;GENERAL MARK SUBROUTINE. CALLED TO MARK ALL THINGS +; A/ GOODIE TO MARK FROM +; B/ TYPE OF A (IN RH) +; C/ TYPE,DATUM PAIR POINTER + +MARK2: HLRZ B,(C) ;GET TYPE +MARK1: MOVE A,1(C) ;GET GOODIE +MARK: JUMPE A,CPOPJ ; NEVER MARK 0 + MOVEI 0,(A) + CAIL 0,@PURBOT ; DONT MARK PURE STUFF + POPJ P, + PUSH P,A ;SAVE GOODIE + HRLM C,-1(P) ;AND POINTER TO IT + ANDI B,TYPMSK ; FLUSH MONITORS + LSH B,1 ;TIMES 2 TO GET SAT + HRRZ B,@TYPNT ;GET SAT + ANDI B,SATMSK + CAIG B,NUMSAT ; SKIP IF TEMPLATE DATA + JRST @MKTBS(B) ;AND GO MARK + JRST TD.MRK + +; DISPATCH TABLE FOR MARK PHASE ("SETZ'D" ENTRIES MUST BE DEFERRED) + +DISTBS MKTBS,GCRET,[[S2WORD,PAIRMK],[S2DEFR,DEFMK],[SNWORD,VECTMK] +[STPSTK,TPMK],[SARGS,],[S2NWORD,VECTMK],[SPSTK,TPMK],[SSTORE,VECTMK] +[SFRAME,],[SBYTE,],[SATOM,ATOMK],[SPVP,VECTMK],[SGATOM,GATOMK] +[SLOCID,],[SCHSTR,],[SASOC,ASMRK],[SLOCL,PAIRMK] +[SLOCA,],[SLOCV,VECTMK],[SLOCU,VECTMK],[SLOCS,],[SLOCN,ASMRK]] + + +;HERE TO MARK THAT WHICH IS POINTED TO BY A DEFERRED POINTER + +DEFMK: TLOA TYPNT,400000 ;USE SIGN BIT AS FLAG + +;HERE TO MARK LIST ELEMENTS + +PAIRMK: TLZ TYPNT,400000 ;TURN OF DEFER BIT + PUSH P,[0] ; WILL HOLD BACK PNTR + MOVEI C,(A) ;POINT TO LIST +PAIRM1: CAMGE C,PARTOP ;CHECK FOR BEING IN BOUNDS + CAMGE C,PARBOT + FATAL AGC--MARKED PAIR OUTSIDE PAIR SPACE + SKIPGE B,(C) ;SKIP IF NOT MARKED + JRST RETNEW ;ALREADY MARKED, RETURN + IORM D,(C) ;MARK IT + AOS PARNUM + MOVEM B,FRONT(FPTR) ; STORE 1ST WORD + MOVE 0,1(C) ; AND 2D + MOVEM 0,FRONT+1(FPTR) + ADD FPTR,[2,,2] ; MOVE ALONG IN FRONTIER + JUMPL FPTR,PAIRM2 ; NOD NEED FOR NEW CORE + +; HERE TO EXTEND THE FRONTIER + + HRRZ A,BOTNEW ; CURRENT BOTTOM OF WINDOW IN INF + ADDI A,2000 ; MOVE IT UP + HRRM A,BOTNEW + ASH A,-10. ; TO PAGES +SYSLO1: PUSHJ P,%GETIP ; GET PAGE + PUSHJ P,%SHFNT ; AND SHARE IT + MOVSI FPTR,-2000 + +PAIRM2: MOVEI A,@BOTNEW ; GET INF ADDR + SUBI A,2 + HRRM A,(C) ; LEAVE A POINTER TO NEW HOME + HRRZ E,(P) ; GET BACK POINTER + JUMPE E,PAIRM7 ; 1ST ONE, NEW FIXUP + MOVSI 0,(HRRM) ; INS FOR CLOBBER + PUSHJ P,SMINF ; SMASH INF'S CORE IMAGE +PAIRM4: MOVEM A,(P) ; NEW BACK POINTER + JUMPL TYPNT,DEFDO ;GO HANDLE DEFERRED POINTER + HRLM B,(P) ; SAVE OLD CDR + PUSHJ P,MARK2 ;MARK THIS DATUM + HRRZ E,(P) ; SMASH CAR IN CASE CHANGED + ADDI E,1 + MOVSI 0,(MOVEM) + PUSHJ P,SMINF + HLRZ C,(P) ;GET CDR OF LIST + CAIGE C,@PURBOT ; SKIP IF PURE (I.E. DONT MARK) + JUMPN C,PAIRM1 ;IF NOT NIL, MARK IT +GCRETP: SUB P,[1,,1] + +GCRET: TLZ TYPNT,400000 ;FOR PAIRMKS BENEFIT + HLRZ C,-1(P) ;RESTORE C + POP P,A + POPJ P, ;AND RETURN TO CALLER + +;HERE TO MARK DEFERRED POINTER + +DEFDO: PUSH P,B ; PUSH OLD PAIR ON STACK + PUSH P,1(C) + MOVEI C,-1(P) ; USE AS NEW DATUM + PUSHJ P,MARK2 ;MARK THE DATUM + HRRZ E,-2(P) ; GET POINTER IN INF CORE + ADDI E,1 + MOVSI 0,(MOVEM) + PUSHJ P,SMINF ; AND CLOBBER + SUB P,[3,,3] + JRST GCRET ;AND RETURN + + +PAIRM7: MOVEM A,-1(P) ; SAVE NEW VAL FOR RETURN + JRST PAIRM4 + +RETNEW: HRRZ A,(C) ; POINT TO NEW WORLD LOCN + HRRZ E,(P) ; BACK POINTER + JUMPE E,RETNW1 ; NONE + MOVSI 0,(HRRM) + PUSHJ P,SMINF + JRST GCRETP + +RETNW1: MOVEM A,-1(P) + JRST GCRETP + +; ROUTINE TO SMASH INFERIORS PPAGES +; E/ ADDR IN INF, A/ THING TO SMASH ,0/ INS TO USE + +SMINF: CAML E,WNDBOT ; SEE IF IN WINDOW + CAML E,WNDTOP + JRST SMINF1 ; NO TRY FRONTIER +SMINF3: SUB E,WNDBOT ; FIX UP + IOR 0,[0 A,WIND(E)] ; FIX INS + XCT 0 + POPJ P, + +SMINF1: PUSH P,0 + HRRZ 0,BOTNEW ; GET FRONTIER RANGE + CAML E,0 ; SKIP IF BELOW + CAIL E,@BOTNEW + JRST SMINF2 + SUB E,0 ; FIXUP E + POP P,0 + IOR 0,[0 A,FRONT(E)] + XCT 0 + POPJ P, + +SMINF2: PUSH P,A + MOVE A,E + ASH A,-10. ; TO PAGES + PUSHJ P,%SHWND + ASH A,10. ; BACK TO WORDS + MOVEM A,WNDBOT + ADDI A,2000 + MOVEM A,WNDTOP + POP P,A + POP P,0 ; RESTORE INS OF INTEREST + JRST SMINF3 + + + ; VECTOR AND TP MARKER, SIGN OF TYPNT IS SET BASED ON WHICH ONE + +TPMK: TLOA TYPNT,400000 ;SET TP MARK FLAG +VECTMK: TLZ TYPNT,400000 + MOVEI E,(A) ;SAVE A POINTER TO THE VECTOR + HLRE B,A ;GET -LNTH + SUB A,B ;LOCATE DOPE WORD + MOVEI A,1(A) ;ZERO LH AND POINT TO 2ND DOPE WORD + PUSHJ P,VECBND ; CHECK IN VECTOR SPACE + JRST VECTB1 ;LOSE, COMPLAIN + + JUMPGE TYPNT,NOBUFR ;IF A VECTOR, NO BUFFER CHECK + CAME A,PGROW ;IS THIS THE BLOWN P + CAMN A,TPGROW ;IS THIS THE GROWING PDL + JRST NOBUFR ;YES, DONT ADD BUFFER + ADDI A,PDLBUF ;POINT TO REAL DOPE WORD + MOVSI 0,-PDLBUF ;ALSO FIX UP POINTER + ADDB 0,1(C) + MOVEM 0,(P) ; FIXUP RET'D PNTR + +NOBUFR: HLRE B,(A) ;GET LENGTH FROM DOPE WORD + JUMPL B,GCRET ; MARKED, LEAVE + ANDI B,377777 ;CLOBBER POSSIBLE MARK BIT + MOVEI F,(A) ;SAVE A POINTER TO DOPE WORD + SUBI F,1(B) ;F POINTS TO START OF VECTOR + HRRZ 0,-1(A) ;SEE IF GROWTH SPECIFIED + MOVEI B,0 ; SET GROWTH 0 + JUMPE 0,NOCHNG ;NONE, JUST CHECK CURRENT SIZES + + LDB B,[001100,,0] ;GET GROWTH FACTOR + TRZE B,400 ;KILL SIGN BIT AND SKIP IF + + MOVNS B ;NEGATE + ASH B,6 ;CONVERT TO NUMBER OF WORDS + SUB F,B ;BOTTOM IS LOWER IN CORE + LDB 0,[111100,,0] ;GET TOP GROWTH + TRZE 0,400 ;HACK SIGN BIT + MOVNS 0 + ASH 0,6 ;CONVERT TO WORDS + PUSHJ P,GSHFLG ; HACK FLAGS FOR GROW/SHRINK + ADD B,0 ;TOTAL GROWTH TO B +NOCHNG: +VECOK: HLRE E,(A) ;GET LENGTH AND MARKING + MOVEI F,(E) ;SAVE A COPY + ADD F,B ;ADD GROWTH + SUBI E,2 ;- DOPE WORD LENGTH + IORM D,(A) ;MAKE SURE NOW MARKED + CAML A,VECBOT ; ONLY IF REALLY IN VEC SPACE + ADDM F,VECNUM ; ADD LENGTH OF VECTOR + JUMPLE E,GCRET ;ALREADY MARKED OR ZERO LENGTH, LEAVE + + SKIPGE B,-1(A) ;SKIP IF UNIFORM + TLNE B,377777 ;SKIP IF NOT SPECIAL + JUMPGE TYPNT,NOTGEN ;JUMP IF NOT A GENERAL VECTOR + +GENRAL: HLRZ 0,B ;CHECK FOR PSTACK + JUMPE 0,NOTGEN ;IT ISN'T GENERAL + SUBI A,1(E) ;POINT TO FIRST ELEMENT + MOVEI C,(A) ;POINT TO FIRST ELEMENT WITH C + + ; LOOP TO MARK ELEMENTS IN A GENERAL VECTOR + PUSH P,[0] +VECTM2: HLRE B,(C) ;GET TYPE AND MARKING + JUMPL B,GCRET1 ;RETURN, (EITHER DOPE WORD OR FENCE POST) + MOVE A,1(C) ;DATUM TO A + ANDI B,TYPMSK ; FLUSH MONITORS + CAIE B,TCBLK ;IS THIS A SAVED FRAME? + CAIN B,TENTRY ;IS THIS A STACK FRAME + JRST MFRAME ;YES, MARK IT + CAIE B,TUBIND ; BIND + CAIN B,TBIND ;OR A BINDING BLOCK + JRST MBIND + +VECTM3: PUSHJ P,MARK ;MARK DATUM + MOVEM A,1(C) ; IN CASE WAS FIXED +VECTM4: ADDI C,2 + JRST VECTM2 + +MFRAME: HRROI C,FRAMLN+FSAV-1(C) ;POINT TO FUNCTION + HRRZ A,1(C) ; GET IT + PUSHJ P,VECBND ; CHECK IN VECTOR SPACE + JRST MFRAM1 ; IGNORE, NOT IN VECTOR SPACE + HRL A,(A) ; GET LENGTH + MOVEI B,TVEC + PUSHJ P,MARK ; AND MARK IT +MFRAM1: HRROI C,SPSAV-FSAV(C) ;POINT TO SAVED SP + MOVEI B,TSP + PUSHJ P,MARK1 ;MARK THE GOODIE + HRROI C,PSAV-SPSAV(C) ;POINT TO SAVED P + MOVEI B,TPDL + PUSHJ P,MARK1 ;AND MARK IT + HRROI C,TPSAV-PSAV(C) ;POINT TO SAVED TP + MOVEI B,TTP + PUSHJ P,MARK1 ;MARK IT ALS + MOVEI C,-TPSAV+1(C) ;POINT PAST THE FRAME + JRST VECTM2 ;AND DO MORE MARKING + + +MBIND: MOVEI B,TATOM ;FIRST MARK ATOM + SKIPN GCHAIR ; IF NO HAIR, MARK ALL NOW + SKIPE (P) ; PASSED MARKER, IF SO DONT SKIP + JRST MBIND2 ; GO MARK + CAME A,IMQUOTE THIS-PROCESS + JRST MBIND1 ; NOT IT, CONTINUE SKIPPING + HRRM LPVP,2(C) ; SAVE IN RH OF TPVP,,0 + MOVEI LPVP,(C) ; POINT + SETOM (P) ; INDICATE PASSAGE +MBIND1: ADDI C,6 ; SKIP BINDING + JRST VECTM2 + +MBIND2: PUSHJ P,MARK1 ; MARK ATOM + ADDI C,2 ; POINT TO VAL + PUSHJ P,MARK2 ; AND MARK IT + MOVEM A,1(C) + ADDI C,2 + MOVEI B,TLIST ; POINT TO DECL SPECS + HLRZ A,(C) + PUSHJ P,MARK ; AND MARK IT + HRLM A,(C) ; LIST FIX UP + MOVEI B,TLOCI ; NOW MARK LOCATIVE + MOVE A,1(C) + JRST VECTM3 + +VECLOS: JUMPL C,CCRET ;JUMP IF CAN'T MUNG TYPE + HLLZ 0,(C) ;GET TYPE + MOVEI B,TILLEG ;GET ILLEGAL TYPE + HRLM B,(C) + MOVEM 0,1(C) ;AND STORE OLD TYPE AS VALUE + JRST GCRET ;RETURN WITHOUT MARKING VECTOR + +CCRET: CLEARM 1(C) ;CLOBBER THE DATUM + JRST GCRET + + +IGBLK: HRRZ B,(C) ;SKIP TO END OF PP BLOCK + ADDI C,3(B) + JRST VECTM2 + ; MARK ARG POINTERS + +ARGMK: HRRZ A,1(C) ; GET POINTER + HLRE B,1(C) ; AND LNTH + SUB A,B ; POINT TO BASE + PUSHJ P,VECBND + JRST ARGMK0 + HLRZ 0,(A) ; GET TYPE + ANDI 0,TYPMSK + CAIN 0,TCBLK + JRST ARGMK1 + CAIE 0,TENTRY ; IS NEXT A WINNER? + CAIN 0,TINFO + JRST ARGMK1 ; YES, GO ON TO WIN CODE + +ARGMK0: SETZB A,1(C) ; CLOBBER THE CELL + SETZM (P) ; AND SAVED COPY + JRST GCRET + +ARGMK1: MOVE B,1(A) ; ASSUME TTB + ADDI B,(A) ; POINT TO FRAME + CAIE 0,TINFO ; IS IT? + MOVEI B,FRAMLN(A) ; NO, USE OTHER GOODIE + HLRZ 0,OTBSAV(B) ; GET TIME + HRRZ A,(C) ; AND FROM POINTER + CAIE 0,(A) ; SKIP IF WINNER + JRST ARGMK0 + HRROI C,TPSAV-1(B) ; MARK FROM TP SLOT + MOVEI B,TTP + MOVE A,1(C) +; PUSHJ P,MARK ; WILL PUT BACK WHEN KNOWN HOW! + JRST GCRET + +; MARK FRAME POINTERS + +FRMK: SUBI C,1 ;PREPARE TO MARK PROCESS VECTOR + HRRZ A,1(C) ;USE AS DATUM + SUBI A,1 ;FUDGE FOR VECTMK + MOVEI B,TPVP ;IT IS A VECTRO + PUSHJ P,MARK ;MARK IT + JRST GCRET + +; MARK BYTE POINTER + +BYTMK: PUSHJ P,BYTDOP ; GET DOPE WORD IN A + SOJG A,VECTMK ;FUDGE DOPE WORD POINTER FOR VECTMK + + FATAL AGC--BYTE POINTER WITH ZERO DOPE WORD POINTER + + ; MARK ATOMS IN GVAL STACK + +GATOMK: HRRZ B,(C) ; POINT TO POSSIBLE GDECL + JUMPE B,ATOMK + CAIN B,-1 + JRST ATOMK + MOVEI A,(B) ; POINT TO DECL FOR MARK + MOVEI B,TLIST + MOVEI C,0 + PUSHJ P,MARK + HLRZ C,-1(P) ; RESTORE HOME POINTER + HRRM A,(C) ; CLOBBER UPDATED LIST IN + MOVE A,1(C) ; RESTORE ATOM POINTER + +; MARK ATOMS + +ATOMK: +REPEAT 0,[ + TLO TYPNT,.ATOM. ; SAY ATOM WAS MARKED + PUSHJ P,GETLNT ;GET LENGTH AND CHECK BOUNDS + HRRZ C,(A) ; IF UNBOUND OR GLOBAL + JUMPE C,MRKOBL ; SKIP + HRRZ C,1(A) ; DONT MARK BUT UPDATE BASED ON TPGROW + HLRE B,1(A) + SUB C,B ; POINT TO DOPE WORD + MOVEI C,1(C) ; POINT TO 2D DOPE WORD + MOVSI B,-PDLBUF ; IN CASE UPDATE + CAME C,TPGROW ; SKIP IF GROWER + ADDM B,1(A) ; OTHERWISE UPDATE +MRKOBL: MOVEI C,1(A) ; POINT TO OBLIST SLOT +] + TLO TYPNT,.ATOM. ; SAY ATOM WAS MARKED + MOVEI C,1(A) + HRRZ 0,(A) + PUSHJ P,GETLNT ;GET LENGTH AND CHECK BOUNDS + JUMPE 0,MRKOBL + HRRZ B,(C) + HLRE 0,(C) + SUB B,0 + MOVEI B,1(B) + MOVSI 0,-PDLBUF + CAME B,TPGROW + ADDM 0,(C) +MRKOBL: MOVEI B,TOBLS + SKIPGE 1(C) ; IF > 0, NOT OBL + PUSHJ P,MARK1 ; AND MARK IT + JRST GCRET ;AND LEAVE + +GETLNT: HLRE B,A ;GET -LNTH + SUB A,B ;POINT TO 1ST DOPE WORD + MOVEI A,1(A) ;POINT TO 2ND DOPE WORD + PUSHJ P,VECBND + JRST VECTB1 ;BAD VECTOR, COMPLAIN + + HLRE B,(A) ;GET LENGTH AND MARKING + IORM D,(A) ;MAKE SURE MARKED + JUMPL B,GCRET1 ;MARKED ALREADY, QUIT + SUBI A,-1(B) ;POINT TO TOP OF ATOM + CAML A,VECBOT ; DONT COUNT STORAGE + ADDM B,VECNUM ;UPDATE VECNUM + POPJ P, ;AND RETURN + +GCRET1: SUB P,[1,,1] ;FLUSH RETURN ADDRESS + JRST GCRET + +VECBND: CAMGE A,VECTOP + CAMGE A,VECBOT + JRST .+2 + JRST CPOPJ1 + + CAMG A,CODTOP + CAIGE A,STOSTR + POPJ P, + JRST CPOPJ1 + +; MARK NON-GENERAL VECTORS + +NOTGEN: CAMN B,[GENERAL+] ;PROCESS VECTOR? + JRST GENRAL ;YES, MARK AS A VECTOR + JUMPL B,SPECLS ; COMPLAIN IF A SPECIAL HACK + SUBI A,1(E) ;POINT TO TOP OF A UNIFORM VECTOR + HLRZS B ;ISOLATE TYPE + ANDI E,TYPMSK + MOVE F,B ; AND COPY IT + LSH B,1 ;FIND OUT WHERE IT WILL GO + HRRZ B,@TYPNT ;GET SAT IN B + ANDI B,SATMSK + MOVEI C,@MKTBS(B) ;POINT TO MARK SR + CAIN C,GCRET ;IF NOT A MARKED FROM GOODIE, IGNORE + JRST GCRET + MOVEI C,-1(A) ;POINT 1 PRIOR TO VECTOR START + PUSH P,E ;SAVE NUMBER OF ELEMENTS + PUSH P,F ;AND UNIFORM TYPE + +UNLOOP: MOVE B,(P) ;GET TYPE + MOVE A,1(C) ;AND GOODIE + TLO C,400000 ;CAN'T MUNG TYPE + PUSHJ P,MARK ;MARK THIS ONE + MOVEM A,1(C) ; LIST FIXUP + SOSE -1(P) ;COUNT + AOJA C,UNLOOP ;IF MORE, DO NEXT + + SUB P,[2,,2] ;REMOVE STACK CRAP + JRST GCRET + + +SPECLS: FATAL AGC--UNRECOGNIZED SPECIAL VECTOR + + ;MARK LOCID TYPE GOODIES + +LOCMK: HRRZ B,(C) ;GET TIME + JUMPE B,LOCMK1 ; SKIP LEGAL CHECK FOR GLOBAL + HRRZ 0,2(A) ; GET OTHER TIME + CAIE 0,(B) ; SAME? + SETZB A,1(C) ; NO, SMASH LOCATIVE + JUMPE A,GCRET ; LEAVE IF DONE +LOCMK1: PUSH P,C + MOVEI B,TATOM ; MARK ATOM + MOVEI C,-2(A) ; POINT TO ATOM + PUSHJ P,MARK1 ; LET LOCATIVE SAVE THE ATOM + POP P,C + HRRZ B,(C) ; TIME BACK + MOVE A,1(C) ; RESTORE POINTER TO STACK + JUMPE B,VECTMK ;IF ZERO, GLOBAL + JRST TPMK ;ELSE, ON TP + +; MARK ASSOCIATION BLOCKS + +ASMRK: HRLI A,-ASOLNT ;LOOK LIKE A VECTOR POINTER + PUSHJ P,GETLNT ;GET LENGTH AND CHECK BOUNDS + MOVEI C,(A) ;COPY POINTER + PUSHJ P,MARK2 ;MARK ITEM CELL + MOVEM A,1(C) + ADDI C,INDIC-ITEM ;POINT TO INDICATOR + PUSHJ P,MARK2 + MOVEM A,1(C) + ADDI C,VAL-INDIC + PUSHJ P,MARK2 + MOVEM A,1(C) + SKIPN GCHAIR ; IF NO HAIR, MARK ALL FRIENDS + JRST GCRET + HRRZ A,NODPNT-VAL(C) ; NEXT + JUMPN A,ASMRK ; IF EXISTS, GO + JRST GCRET + + + +;HERE WHEN A VECTOR POINTER IS BAD + +VECTB1:FATAL AGC--VECTOR POINTS OUTSIDE OF VECTOR SPACE + + ; HERE TO MARK TEMPLATE DATA STRUCTURES + +TD.MRK: HLRZ B,(A) ; GET REAL SPEC TYPE + ANDI B,377777 ; KILL SIGN BIT + MOVEI E,-NUMSAT-1(B) ; GET REL POINTER TO TABLE + HRLI E,(E) + ADD E,TD.LNT+1(TVP) + HRRZS C,A ; FLUSH COUNT AND SAVE + SKIPL E ; WITHIN BOUNDS + FATAL BAD SAT IN AGC + PUSHJ P,GETLNT ; GOODIE IS NOW MARKED + + XCT (E) ; RET # OF ELEMENTS IN B + + HLRZ D,B ; GET POSSIBLE "BASIC LENGTH" FOR RESTS + PUSH P,[0] ; TEMP USED IF RESTS EXIST + PUSH P,D + MOVEI B,(B) ; ZAP TO ONLY LENGTH + PUSH P,C ; SAVE POINTER TO TEMPLATE STRUCTURE + PUSH P,[0] ; HOME FOR VALUES + PUSH P,[0] ; SLOT FOR TEMP + PUSH P,B ; SAVE + SUB E,TD.LNT+1(TVP) + PUSH P,E ; SAVE FOR FINDING OTHER TABLES + JUMPE D,TD.MR2 ; NO REPEATING SEQ + ADD E,TD.GET+1(TVP) ; COMP LNTH OF REPEATING SEQ + HLRE E,(E) ; E ==> - LNTH OF TEMPLATE + ADDI E,(D) ; E ==> -LENGTH OF REP SEQ + MOVNS E + HRLM E,-5(P) ; SAVE IT AND BASIC + +TD.MR2: SKIPG D,-1(P) ; ANY LEFT? + JRST TD.MR1 + + MOVE E,TD.GET+1(TVP) + ADD E,(P) + MOVE E,(E) ; POINTER TO VECTOR IN E + MOVEM D,-6(P) ; SAVE ELMENT # + SKIPN B,-5(P) ; SKIP IF "RESTS" EXIST + SOJA D,TD.MR3 + + MOVEI 0,(B) ; BASIC LNT TO 0 + SUBI 0,(D) ; SEE IF PAST BASIC + JUMPGE 0,.-3 ; JUMP IF O.K. + MOVSS B ; REP LNT TO RH, BASIC TO LH + IDIVI 0,(B) ; A==> -WHICH REPEATER + MOVNS A + ADD A,-5(P) ; PLUS BASIC + ADDI A,1 ; AND FUDGE + MOVEM A,-6(P) ; SAVE FOR PUTTER + ADDI E,-1(A) ; POINT + SOJA D,.+2 + +TD.MR3: ADDI E,(D) ; POINT TO SLOT + XCT (E) ; GET THIS ELEMENT INTO A AND B + MOVEM A,-3(P) ; SAVE TYPE FOR LATER PUT + MOVEM B,-2(P) + EXCH A,B ; REARRANGE + GETYP B,B + MOVEI C,-3(P) ; TELL OTHER GUYS THEY CANT DIRECTLY MUNG + MOVSI D,400000 ; RESET FOR MARK + PUSHJ P,MARK ; AND MARK THIS GUY (RET FIXED POINTER IN A) + MOVE C,-4(P) ; REGOBBLE POINTER TO TEMPLATE + MOVE E,TD.PUT+1(TVP) + MOVE B,-6(P) ; RESTORE COUNT + ADD E,(P) + MOVE E,(E) ; POINTER TO VECTOR IN E + ADDI E,(B)-1 ; POINT TO SLOT + MOVE B,-3(P) ; RESTORE TYPE WORD + EXCH A,B + SOS D,-1(P) ; GET ELEMENT # + XCT (E) ; SMASH IT BACK + FATAL TEMPLATE LOSSAGE + MOVE C,-4(P) ; RESTORE POINTER IN CASE MUNGED + JRST TD.MR2 + +TD.MR1: SUB P,[7,,7] + MOVSI D,400000 ; RESTORE MARK/UNMARK BIT + JRST GCRET + +; This phase attempts to remove any unwanted associations. The program +; loops through the structure marking values of associations. It can only +; stop when no new values (potential items and/or indicators) are marked. + +VALFLS: PUSH P,[0] ; INDICATE WHETHER ANY ON THIS PASS + PUSH P,[0] ; OR THIS BUCKET +ASOMK1: MOVE A,ASOVEC+1(TVP) ; GET VECTOR POINTER + SETOM -1(P) ; INITIALIZE FLAG + +ASOM6: SKIPG C,(A) ; SKIP IF BUCKET TO BE SCANNED + JRST ASOM1 + SETOM (P) ; SAY BUCKET NOT CHANGED + +ASOM2: MOVEI F,(C) ; COPY POINTER + SKIPG ASOLNT+1(C) ; SKIP IF NOT ALREADY MARKED + JRST ASOM4 ; MARKED, GO ON + PUSHJ P,MARKQ ; SEE IF ITEM IS MARKED + JRST ASOM3 ; IT IS NOT, IGNORE IT + MOVEI F,(C) ; IN CASE CLOBBERED BY MARK2 + MOVEI C,INDIC(C) ; POINT TO INDICATOR SLOT + PUSHJ P,MARKQ + JRST ASOM3 ; NOT MARKED + + PUSH P,A ; HERE TO MARK VALUE + PUSH P,F + HLRE F,ASOLNT-INDIC+1(C) ; GET LENGTH + JUMPL F,.+3 ; SKIP IF MARKED + CAML C,VECBOT ; SKIP IF IN NOT VECT SPACE + ADDM F,VECNUM + PUSHJ P,MARK2 ; AND MARK + MOVEM A,1(C) ; LIST FIX UP + ADDI C,ITEM-INDIC ; POINT TO ITEM + PUSHJ P,MARK2 + MOVEM A,1(C) + ADDI C,VAL-ITEM ; POINT TO VALUE + PUSHJ P,MARK2 + MOVEM A,1(C) + IORM D,ASOLNT-VAL+1(C) ; MARK ASOC BLOCK + POP P,F + POP P,A + AOSA -1(P) ; INDICATE A MARK TOOK PLACE + +ASOM3: AOS (P) ; INDICATE AN UNMARKED IN THIS BUCKET +ASOM4: HRRZ C,ASOLNT-1(F) ; POINT TO NEXT IN BUCKET + JUMPN C,ASOM2 ; IF NOT EMPTY, CONTINUE + SKIPGE (P) ; SKIP IF ANY NOT MARKED + HRROS (A) ; MARK BUCKET AS NOT INTERESTING +ASOM1: AOBJN A,ASOM6 ; GO TO NEXT BUCKET + TLZE TYPNT,.ATOM. ; ANY ATOMS MARKED? + JRST VALFLA ; YES, CHECK VALUES +VALFL8: + +; NOW SEE WHICH CHANNELS STILL POINTED TO + +CHNFL3: MOVEI 0,N.CHNS-1 + MOVEI A,CHNL1(TVP) ; SLOTS + HRLI A,TCHAN ; TYPE HERE TOO + +CHNFL2: SKIPN B,1(A) + JRST CHNFL1 + HLRE C,B + SUBI B,(C) ; POINT TO DOPE + HLLM A,(A) ; PUT TYPE BACK + SKIPGE 1(B) + JRST CHNFL1 + HLLOS (A) ; MARK AS A LOSER + PUSH P,A + PUSH P,0 + MOVEI C,(A) + PUSHJ P,MARK2 + POP P,0 + POP P,A + SETZM -1(P) ; SAY MARKED +CHNFL1: ADDI A,2 + SOJG 0,CHNFL2 + + SKIPE GCHAIR ; IF NOT HAIRY CASE + POPJ P, ; LEAVE + + SKIPL -1(P) ; SKIP IF NOTHING NEW MARKED + JRST ASOMK1 + + SUB P,[2,,2] ; REMOVE FLAGS + + + + ; HERE TO REEMOVE UNUSED ASSOCIATIONS + + MOVE A,ASOVEC+1(TVP) ; GET ASOVEC BACK FOR FLUSHES + +ASOFL1: SKIPN C,(A) ; SKIP IF BUCKET NOT EMPTY + JRST ASOFL2 ; EMPTY BUCKET, IGNORE + HRRZS (A) ; UNDO DAMAGE OF BEFORE + +ASOFL5: SKIPGE ASOLNT+1(C) ; SKIP IF UNMARKED + JRST ASOFL3 ; MARKED, DONT FLUSH + + HRRZ B,ASOLNT-1(C) ; GET FORWARD POINTER + HLRZ E,ASOLNT-1(C) ; AND BACK POINTER + JUMPN E,ASOFL4 ; JUMP IF NO BACK POINTER (FIRST IN BUCKET) + HRRZM B,(A) ; FIX BUCKET + JRST .+2 + +ASOFL4: HRRM B,ASOLNT-1(E) ; FIX UP PREVIOUS + JUMPE B,.+2 ; JUMP IF NO NEXT POINTER + HRLM E,ASOLNT-1(B) ; FIX NEXT'S BACK POINTER + HRRZ B,NODPNT(C) ; SPLICE OUT THRAD + HLRZ E,NODPNT(C) + SKIPE E + HRRM B,NODPNT(E) + SKIPE B + HRLM E,NODPNT(B) + +ASOFL3: HRRZ C,ASOLNT-1(C) ; GO TO NEXT + JUMPN C,ASOFL5 +ASOFL2: AOBJN A,ASOFL1 + +; NOW CLOBBER UNMARKED LOCAL NAD GLOBAL VALUES + + MOVE A,GLOBSP+1(TVP) ; GET GLOBAL PDL + +GLOFLS: SKIPGE (A) ; SKIP IF NOT ALREADY MARKED + JRST .+3 ; VIOLATE CARDINAL RULE #69 + MOVSI B,-3 + PUSHJ P,ZERSLT ; CLOBBER THE SLOT + ANDCAM D,(A) ; UNMARK + ADD A,[4,,4] + JUMPL A,GLOFLS ; MORE?, KEEP LOOPING + +LOCFL1: HRRZ A,(LPVP) ; NOW CLOBBER LOCAL SLOTS + HRRZ C,2(LPVP) + HLLZS 2(LPVP) ; NOW CLEAR + MOVEI LPVP,(C) + JUMPE A,LOCFL2 ; NONE TO FLUSH + +LOCFLS: SKIPGE (A) ; MARKDE? + JRST .+3 + MOVSI B,-5 + PUSHJ P,ZERSLT + ANDCAM D,(A) ;UNMARK + HRRZ A,(A) ; GO ON + JUMPN A,LOCFLS +LOCFL2: JUMPN LPVP,LOCFL1 ; JUMP IF MORE PROCESS + POPJ P, + + + +MARK23: PUSH P,A ; SAVE BUCKET POINTER + PUSH P,F + PUSHJ P,MARK2 + MOVEM A,1(C) + POP P,F + POP P,A + AOS -2(P) ; MARKING HAS OCCURRED + IORM D,ASOLNT+1(C) ; MARK IT + JRST MKD + + ; CHANNEL FLUSHER FOR NON HAIRY GC + +CHNFLS: PUSH P,[-1] + SETOM (P) ; RESET FOR RETRY + PUSHJ P,CHNFL3 + SKIPL (P) + JRST .-3 ; REDO + SUB P,[1,,1] + POPJ P, + +; VALUE FLUSHING PHASE, HACKS BOTTOM OF TP AND GLOBAL SP + +VALFLA: MOVE C,GLOBSP+1(TVP) + +VALFL1: SKIPL (C) ; SKIP IF NOT MARKED + PUSHJ P,MARKQ ; SEE IF ATOM IS MARKED + JRST VALFL2 + IORM D,(C) + AOS -1(P) ; INDICATE MARK OCCURRED + PUSH P,C + HRRZ B,(C) ; GET POSSIBLE GDECL + JUMPE B,VLFL10 ; NONE + CAIN B,-1 ; MAINFIFEST + JRST VLFL10 + MOVEI A,(B) + MOVEI B,TLIST + MOVEI C,0 + PUSHJ P,MARK ; MARK IT + MOVE C,(P) ; POINT + HRRM A,(C) ; CLOBBER UPDATE IN +VLFL10: ADD C,[2,,2] ; BUMP TO VALUE + PUSHJ P,MARK2 ; MARK VALUE + MOVEM A,1(C) + POP P,C +VALFL2: ADD C,[4,,4] + JUMPL C,VALFL1 ; JUMP IF MORE + + HRLM LPVP,(P) ; SAVE POINTER +VALFL7: MOVEI C,(LPVP) + MOVEI LPVP,0 +VALFL6: HRRM C,(P) + +VALFL5: HRRZ C,(C) ; CHAIN + JUMPE C,VALFL4 + MOVEI B,TATOM ; TREAT LIKE AN ATOM + SKIPL (C) ; MARKED? + PUSHJ P,MARKQ1 ; NO, SEE + JRST VALFL5 ; LOOP + AOS -1(P) ; MARK WILL OCCUR + IORM D,(C) + ADD C,[2,,2] ; POINT TO VALUE + PUSHJ P,MARK2 ; MARK VALUE + MOVEM A,1(C) + SUBI C,2 + JRST VALFL5 + +VALFL4: HRRZ C,(P) ; GET SAVED LPVP + MOVEI A,(C) + HRRZ C,2(C) ; POINT TO NEXT + JUMPN C,VALFL6 + JUMPE LPVP,VALFL9 + + HRRM LPVP,2(A) ; NEW PROCESS WAS MARKED + JRST VALFL7 + +ZERSLT: HRRI B,(A) ; COPY POINTER + SETZM 1(B) + AOBJN B,.-1 + POPJ P, + +VALFL9: HLRZ LPVP,(P) ; RESTORE CHAIN + JRST VALFL8 + + + ;SUBROUTINE TO SEE IF A GOODIE IS MARKED +;RECEIVES POINTER IN C +;SKIPS IF MARKED NOT OTHERWISE + +MARKQ: HLRZ B,(C) ;TYPE TO B +MARKQ1: MOVE E,1(C) ;DATUM TO C + MOVEI 0,(E) + CAIL 0,@PURBOT ; DONT CHACK PURE + JRST MKD ; ALWAYS MARKED + ANDI B,TYPMSK ; FLUSH MONITORS + LSH B,1 + HRRZ B,@TYPNT ;GOBBLE SAT + ANDI B,SATMSK + CAIG B,NUMSAT ; SKIP FOR TEMPLATE + JRST @MQTBS(B) ;DISPATCH + ANDI E,-1 ; FLUSH REST HACKS + JRST VECMQ + + +DISTBS MQTBS,MKD,[[S2WORD,PAIRMQ],[S2DEFR,PAIRMQ],[SNWORD,VECMQ],[S2NWORD,VECMQ] +[STPSTK,VECMQ],[SARGS,ARGMQ],[SPSTK,VECMQ],[SFRAME,FRMQ],[SBYTE,BYTMQ],[SLOCID,LOCMQ] +[SATOM,VECMQ],[SPVP,VECMQ],[SLOCID,VECMQ],[SCHSTR,BYTMQ],[SLOCA,ARGMQ],[SLOCU,VECMQ] +[SLOCV,VECMQ],[SLOCS,BYTMQ],[SLOCN,ASMQ],[SASOC,ASMQ],[SLOCL,PAIRMQ],[SGATOM,VECMQ]] + +PAIRMQ: JUMPE E,MKD ; NIL ALWAYS MARKED + SKIPL (E) ; SKIP IF MARKED + POPJ P, +CPOPJ1: +ARGMQ: +MKD: AOS (P) + POPJ P, + +BYTMQ: HRRZ E,(C) ;GET DOPE WORD POINTER + SOJA E,VECMQ1 ;TREAT LIKE VECTOR + +FRMQ: HRRZ E,(C) ; POINT TO PV DOPE WORD + SOJA E,VECMQ1 + + +VECMQ: HLRE 0,E ;GET LENGTH + SUB E,0 ;POINT TO DOPE WORDS + +VECMQ1: SKIPGE 1(E) ;SKIP IF NOT MARKED + AOS (P) ;MARKED, CAUSE SKIP RETURN + POPJ P, + +ASMQ: SUBI E,ASOLNT + JRST VECMQ1 + +LOCMQ: HRRZ 0,(C) ; GET TIME + JUMPE 0,VECMQ ; GLOBAL, LIKE VECTOR + HLRE 0,E ; FIND DOPE + SUB E,0 + MOVEI E,1(E) ; POINT TO LAST DOPE + CAMN E,TPGROW ; GROWING? + SOJA E,VECMQ1 ; YES, CHECK + ADDI E,PDLBUF ; FUDGE + MOVSI 0,-PDLBUF + ADDM 0,1(C) + SOJA E,VECMQ1 + REPEAT 0,[ + + + +;RETIME PHASE -- CALLED IFF A FRAME TIME HAS OVERFLOWED +;RECEIVES POINTER TO STACK TO BE RECALIBRATED IN A +;LEAVES HIGHEST TIME IN TIMOUT + +RETIME: HLRE B,A ;GET LENGTH IN B + SUB A,B ;COMPUTE DOPE WORD LOCATION + MOVEI A,1(A) ;POINT TO 2D DOPE WORD AND CLEAR LH + CAME A,TPGROW ;IS THIS ONE BLOWN? + ADDI A,PDLBUF ;NO, POINT TO DOPE WORD + LDB B,[222100,,(A)] ;GET LENGTH FIELD (IGNOREING MARK BIT + SUBI A,-1(B) ;POINT TO PDLS BASE + MOVEI C,1 ;INITIALIZE NEW TIMES + +RETIM1: SKIPGE B,(A) ;IF <0, HIT DOPE WORD OR FENCE POST + JRST RETIM3 + HLRZS B ;ISOLATE TYPE + CAIE B,TENTRY ;FRAME START? + AOJA A,RETIM2 ;NO, TRY BINDING + HRLM C,FRAMLN+OTBSAV(A) ;STORE NEW TIME + ADDI A,FRAMLN ;POINT TO NEXT ELEMENT + AOJA C,RETIM1 ;BUMP TIME AND MOVE ON + +RETIM2: CAIE B,TUBIND + CAIN B,TBIND ;BINDING? + HRRM C,3(A) ;YES, STORE CURRENT TIME + AOJA A,RETIM1 ;AND GO ON + +RETIM3: MOVEM C,TIMOUT ;SAVE TIME + POPJ P, ;RETURN + + +] + + ; Core adjustment phase, try to win in all obscure cases! + +CORADJ: MOVE A,P.TOP ; update AGCs core top + MOVEM A,CORTOP + MOVE A,PARBOT ; figure out all the core needed + ADD A,PARNEW + ADD A,PARNUM + ADD A,PARNUM + ADD A,VECNUM + ADDI A,3777 ; account for gc pdl and round to block + ANDCMI A,1777 + +CORAD3: CAMG A,PURTOP ; any way of winning at all? + JRST CORAD1 ; yes, go try +CORA33: SETOM GCDNTG ; no, can't even grow something + SETOM GCDANG ; or get current request + SKIPL C,PARNEW ; or move pairs up + SETZM PARNEW + MOVEM C,SPARNW ; save attempt in case of retry + +CORAD6: MOVE A,CORTOP ; update core gotton with needed + ASH A,-10. ; to blocks + PUSHJ P,P.CORE ; try to get it (any lossage will retry) + PUSHJ P,SLPM1 +CORA11: MOVE A,CORTOP ; compute new home for vectors + SUB A,VECTOP + SUBI A,2000 ; remember gc pdl + MOVEM A,VECNEW + POPJ P, ; return to main GC loop + +; Here if at least enough for growers + +CORAD1: SKIPN B,GCDOWN ; skip if were called to get pure space + JRST CORAD2 + ADDI A,2000(B) ; A/ enough for move down and minimum free + CAMG A,PURTOP ; any chance of winning? + JRST CORAD4 ; yes, go win some + +; Here if cant move down + + SETOM GCDANG ; complain upon return + SUBI A,2000(B) ; reset for re-entry into loop + CAMLE A,PURTOP ; win? + JRST CORA33 + +; Here if may be able to grant current request + +CORAD2: ADD A,GETNUM ; A/ total neede including request + ADD A,CURPLN ; dont give self away or something + ADDI A,3777 ; at least one free block and round + ANDCMI A,1777 ; to block boundary + CAMG A,PURTOP ; any hope of this? + JRST CORAD5 ; yes, now see if some slop space can appear + + SETOM GCDANG ; tell caller we lost + MOVE A,PURTOP ; try to get as much as possible anyway + SUB A,PURBOT + SUB A,CURPLN +CORAD8: ASH A,-10. ; to pages + PUSHJ P,GETPAG + FATAL PAGES NOT AVAILABLE + MOVSI D,400000 ; wipes out D + MOVE A,PURBOT ; and use current PURBOT as new core top + SUBI A,2000 ; for gc pdl + MOVEM A,CORTOP + JRST CORAD6 ; and allocate necessary pages + +; Here if real necessities taken care of, try for slop space + +CORAD5: ADD A,FREMIN ; try for minimum + SUBI A,2000-1777 ; round and flush min 2000 of before + ANDCMI A,1777 ; round to block boundary + CAMG A,PURTOP ; again, do we win? + JRST CORAD7 ; yes, we win totally + +; Here if cant get desired free but get some + + MOVE A,PURTOP ; compute pages to flush + SUB A,CURPLN ; again dont flush current prog + SUB A,PURBOT ; A/ words to get + JRST CORAD8 ; go do it + +; Here if can get all the free we want + +CORAD7: SUB A,CURPLN + CAMG A,PURBOT ; do any pages get the ax? + JRST CORAD9 ; no, see if can give core back! + SUB A,PURBOT ; words to get purely + JRST CORAD8 + +CORAD9: CAMG A,CORTOP ; skip if must get core + JRST CORA10 + MOVEM A,CORTOP + JRST CORAD6 ; and go get it + +; Here if still may have to give it back + +CORA10: MOVE B,CORTOP + SUB B,A + CAMG B,FREDIF ; skip if giving awy + JRST CORA11 + +CORA12: MOVEM A,CORTOP + ASH A,-10. + MOVEM A,CORSET ; leave to shrink later + JRST CORA11 + +; Here if going down to also get free space + +CORAD4: SUBI A,2000 ; uncompensate for min + ADD A,FREMIN + CAML A,CORTOP ; skip if ok for max + MOVE A,CORTOP ; else use up to pure + SUB A,GCDOWN ; new CORTOP to A + JRST CORA12 ; go set up final shrink + +; routine to wait for core + +SLPM1: MOVEI 0,1 + .SLEEP 0, + SOS (P) + SOS (P) ; ret to prev ins + POPJ P, + +CORADL: PUSHJ P,P.CORE ;SET TO NEW CORE VALUE + FATAL AGC--CANT CORE DOWN + POPJ P, + ;VECTOR RELOCATE --GETS VECTOP IN A +;AND VECNEW IN B +;FILLS IN RELOCATION FIELDS OF MARKED VECTORS +;AND REUTRNS FINAL VECNEW IN B + +VECREL: CAMG A,VECBOT ;PROCESSED TO BOTTOM OF VECTOR SPACE? + POPJ P, ;YES, RETURN + HLRE C,(A) ;GET COUNT FROM DOPE WD, EXTEND MARK BIT + JUMPL C,VECRE1 ;IF MARKED GO PROCESS + HRRM A,(A) ; INDICATE NON-MOVE BY LEAVING SAME + SUBI A,(C) ;MOVE ON TO NEXT VECTOR + SOJG C,VECREL ;AND KEEP SCANNING + JSP D,VCMLOS ;LOSER, LEAVE TRACKS AS TO WHO LOST + +VECRE1: HRRZ E,-1(A) ;GOBBLE THE GROWTH FILEDS + HRRM B,(A) ;STORE RELOCATION + JUMPE E,VECRE2 ;NO GROWTH (OR SHRINKAGE), GO AWAY + LDB F,[111100,,E] ;GET TOP GROWTH IN F + TRZN F,400 ;CHECK AND FLUSH SIGN + MOVNS F ;WAS ON, NEGATE + SKIPE GCDNTG ; SKIP IF GROWTH OK + JUMPL F,VECRE3 ; DONT ALLOW POSITIVE GROWTH + ASH F,6 ;CONVERT TO WORDS + ADD B,F ;UPDATE RELOCATION + HRRM B,(A) ;AND STORE IT +VECRE3: ANDI E,777 ;ISOLATE BOTTOM GROWTH + TRZN E,400 ;CHECK AND CLEAR SIGN + MOVNS E + SKIPE GCDNTG ; SKIP IF GROWTH OK + JUMPL E,VECRE2 + ASH E,6 ;CONVERT TO WORDS + ADD B,E ;UPDATE FUTURE RELOCATIONS +VECRE2: SUBI A,400000(C) ;AND MOVE ON TO NEXT VECTOR + ANDI C,377777 ;KILL MARK + SUBI B,(C) ; UPDATE WHERE TO GO LOCN + SOJG C,VECREL ;AND KEEP GOING + JSP D,VCMLOS ;LOSES, LEAVE TRACKS + +;PAIR SPACE UPDATE + +;GETS PARBOT IN AC A +;UPDATES VALUES AND CDRS UP TO PARTOP + +PARUPD: CAML A,PARTOP ;ARE THERE MORE PAIRS TO PROCESS + POPJ P, ;NO -- RETURN + +;UPDATE VALUE CELL +PARUP1: ANDCAM D,(A) ; KILL MARK BIT + HLRZ B,(A) ;SET RH OF B TO TYPE + MOVE C,1(A) ;SET C TO VALUE + PUSHJ P,VALUPD ;UPDATE THIS VALUE + ADDI A,2 ;MOVE ON TO NEXT PAIR + JRST PARUPD ;AND CONTINUE + + + ;VECTOR SPACE UPDATE +;GETS VECTOP IN A +;UPDATES ALL VALUE CELLS IN MARKED VECTORS +;ESCAPES WHEN IT GETS TO VECBOT + +VECUPD: SUBI A,1 ;MAKE A POINT TO LAST DOPE WD + PUSH P,VECBOT + PUSHJ P,UPD1 + SUB P,[1,,1] + POPJ P, + +; STORAGE SPACE UPDATE + +STOUP: PUSH P,[STOSTR] + PUSHJ P,UPD1 + SUB P,[1,,1] + JRST ENHACK +UPD1: +VECUP1: CAMG A,-1(P) ;ANY MORE VECTORS TO PROCESS? + POPJ P, + SKIPGE B,(A) ;IS DOPE WORD MARKED? + JRST VECUP2 ;YES -- GO PROCESS VALUES IN THIS VECTOR + HLLZS -1(A) ;MAKE SURE NO GROWTH ATTEMPTS + HLRZS B ;NO -- SET RH OF B TO SIZE OF VECTOR +VECUP5: SUB A,B ;SET A TO POINT TO DOPE WD OF NEXT VECTOR + JRST VECUP1 ;AND CONTINUE + +VECUP2: PUSH P,A ;SAVE DOPE WORD POINTER + HLRZ B,(A) ;GET LENGTH OF THIS VECTOR +VECU11: ANDI B,377777 ;TURN OFF MARK BIT + SKIPGE E,-1(A) ;CHECK FOR UNIFORM OR SPECIAL + TLNE E,377777 ;SKIP IF GENERAL + JRST VECUP6 ;UNIFORM OR SPECIAL, GO DO IT +VECU10: SUB A,B ;SET AC A TO NEXT DOPE WORD + ADDI A,1 ;AND ADVANCE TO FIRST ELEMENT OF THIS VECTOR +VECUP3: HLRZ B,(A) ;GET TYPE + TRNE B,400000 ;IF MARK BIT SET + JRST VECUP4 ;DONE WITH THIS VECTOR + ANDI B,TYPMSK + CAIE B,TCBLK + CAIN B,TENTRY ;SPECIAL HACK FOR ENTRY + JRST ENTRUP + CAIE B,TUNWIN + CAIN B,TSKIP ; SKIP POINTER + JRST BINDUP ; HACK APPROPRAITELY + CAIE B,TBVL ;VECTOR BINDING? + CAIN B,TBIND ;AND BINDING BLOCK + JRST BINDUP + CAIN B,TUBIND + JRST BINDUP +VECU15: MOVE C,1(A) ;GET VALUE + PUSHJ P,VALUPD ;UPDATE THIS VALUE +VECU12: ADDI A,2 ;GO ON TO NEXT VECTOR + JRST VECUP3 ;AND CONTINUE + +VECUP4: POP P,A ;SET TO OLD DOPE WORD + ANDCAM D,(A) ;TURN OFF MARK BIT + HLRZ B,(A) ;GET LENGTH + ANDI B,377777 ; IN CASE DING STORAGE + JRST VECUP5 ;GO ON TO NEXT VECTOR + + + +;UPDATE A SAVED SAVE BLOCK +ENTSUP: MOVEI A,FRAMLN+SPSAV-1(A) ;A POINTS BEFORE SAVED SP + MOVEI B,TSP + PUSHJ P,VALPD1 ;UPDATE SPSAV + MOVEI A,PSAV-SPSAV(A) + MOVEI B,TPDL + PUSHJ P,VALPD1 ;UPDATE PSAV + MOVEI A,TPSAV-PSAV(A) + MOVEI B,TTP + PUSHJ P,VALPD1 ;UPDATE TPSAV +;SKIP TO END OF BLOCK + SUBI A,PSAV-1 + JRST VECUP3 + +;IGNORE A BLOCK +IGBLK2: HRRZ B,(A) ;GET DISPLACEMENT + ADDI A,3(B) ;USE IT + JRST VECUP3 ;GO + + ; ENTRY PART OF THE STACK UPDATER + +ENTRUP: ADDI A,FRAMLN-2 ;POINT PAST FRAME + JRST VECU12 ;NOW REJOIN VECTOR UPDATE + +; UPDATE A BINDING BLOCK + +BINDUP: HRRZ C,(A) ;POINT TO CHAIN + JUMPE C,NONEXT ;JUMP IF NO NEXT BINDING IN CHAIN + HRRZ 0,@(P) ; GET OWN DESTINATION + SUBI 0,@(P) ; RELATIVIZE + ADD C,0 ; AND UPDATE + HRRM C,(A) ;AND STORE IT BACK +NONEXT: CAIN B,TUBIND + JRST .+3 + CAIE B,TBIND ;SKIP IF VAR BINDING + JRST VECU14 ;NO, MUST BE A VECTOR BIND + MOVEI B,TATOM ;UPDATE ATOM POINTER + PUSHJ P,VALPD1 + ADDI A,2 + HLRZ B,(A) ;TYPE OF VALUE + PUSHJ P,VALPD1 + ADDI A,2 ; POINT TO PREV LOCATIVE +VECU16: MOVEI B,TLOCI + SKIPN 1(A) ; IF NO LOCATIVE, + MOVEI B,TUNBOU ; SAY UNBOUND + PUSHJ P,VALPD1 + JRST VECU12 + +VECU14: CAIN B,TBVL ; CHANGE BVL TO VEC + MOVEI B,TVEC ;NOW TREAT LIKE A VECTOR + JRST VECU15 + +; NOW SAFE TO UPDATE ALL ENTRY BLOCKS + +ENHACK: HRRZ F,TBSTO(LPVP) ;GET POINTER TO TOP FRAME + HLLZS TBSTO(LPVP) ;CLEAR FIELD + HLLZS TPSTO(LPVP) + JUMPE F,LSTFRM ;FINISHED + +ENHCK1: MOVEI A,FSAV-1(F) ;POINT PRIOR TO SAVED FUNCTION + HRRZ C,1(A) ; GET POINTER TO FCN + CAML C,VECBOT ; SKIP IF A LOSER + CAMLE C,VECTOP ; SKIP IF A WINNER + JRST ENHCK2 + HRL C,(C) ; MAKE INTO AOBJN + MOVEI B,TVEC + PUSHJ P,VALUPD ; AND UPDATE +ENHCK2: HRRZ F,2(A) ;POINT TO PRIOR FRAME + MOVEI B,TTB ;MARK SAVED TB + PUSHJ P,[AOJA A,VALPD1] + MOVEI B,TAB ;MARK ARG POINTER + PUSHJ P,[AOJA A,VALPD1] + MOVEI B,TSP ;SAVED SP + PUSHJ P,[AOJA A,VALPD1] + MOVEI B,TPDL ;SAVED P STACK + PUSHJ P,[AOJA A,VALPD1] + MOVEI B,TTP ;SAVED TP + PUSHJ P,[AOJA A,VALPD1] + JUMPN F,ENHCK1 ;MARK NEXT ONE IF IT EXISTS + +LSTFRM: HRRZ A,BINDID(LPVP) ;NEXT PROCESS + HLLZS BINDID(LPVP) ;CLOBBER + MOVEI LPVP,(A) + JUMPN LPVP,ENHACK ;DO NEXT PROCESS + POPJ P, + + ; UPDATE ELEMENTS IN UNIFROM AND SPECIAL VECTORS + +VECUP6: JUMPL E,VECUP7 ;JUMP IF SPECIAL + CAIG B,2 ;EMPTY UVECTOR ? + JRST VECUP4 ;YES, NOTHING TO UPDATE + HLRZS E ;ISOLATE TYPE + ANDI E,37777 + EXCH E,B ;TYPE TO B AND LENGTH TO E + SUBI A,(E) ;POINT TO NEXT DOPE WORD + LSH B,1 ;FIND SAT + HRRZ B,@TYPNT + ANDI B,SATMSK + MOVE B,UPDTBS(B) ;FIND WHERE POINTS + CAIN B,CPOPJ ;UNMARKED? + JRST VECUP4 ;YES, GO ON TO NEXT VECTOR + PUSH P,B ;SAVE SR POINTER + SUBI E,2 ;DON'T COUNT DOPE WORDS + +VECUP8: MOVE C,1(A) ;GET GOODIE + MOVEI 0,(C) ; ISOLATE ADDR + JUMPE 0,.+3 ; NEVER 0 PNTR + CAIGE 0,@PURBOT ; OR IF PURE + PUSHJ P,@(P) ;CALL UPDATE ROUTINE + ADDI A,1 + SOJG E,VECUP8 ;LOOP FOR ALL ELEMNTS + + SUB P,[1,,1] ;REMOVE RANDOMNESS + JRST VECUP4 + +; SPECIAL VECTOR UPDATE + +VECUP7: HLRZS E ;ISOLATE SPECIAL TYPE + CAIN E,SATOM+400000 ;ATOM? + JRST ATOMUP ;YES, GO DO IT + CAIN E,STPSTK+400000 ;STACK + JRST VECU10 ;TREAT LIKE A VECTOR + CAIN E,SPVP+400000 ;PROCESS VECTOR + JRST PVPUP ;DO SPECIAL STUFF + CAIN E,SASOC+400000 + JRST ASOUP ;UPDATE ASSOCIATION BLOCK + + TRZ E,400000 ; CHECK FOR TEMPLATE VECTOR + CAIG E,NUMSAT ; SKIP IF POSSIBLE + FATAL AGC--UNRECOGNIZED SPECIAL VECTOR (UPDATE) + MOVEI E,-NUMSAT-1(E) + HRLI E,(E) + ADD E,TD.LNT+1(TVP) + SKIPL E + FATAL AGC--BAD TEMPLATE TYPE + +TD.UPD: MOVEI C,-1(A) ; POINTER TO OBJECT IN C + XCT (E) + HLRZ D,B ; POSSIBLE BASIC LENGTH + PUSH P,[0] + PUSH P,D + MOVEI B,(B) ; ISOLATE LENGTH + PUSH P,C ; SAVE POINTER TO OBJECT + + PUSH P,[0] ; HOME FOR VALUES + PUSH P,[0] ; SLOT FOR TEMP + PUSH P,B ; SAVE + SUB E,TD.LNT+1(TVP) + PUSH P,E ; SAVE FOR FINDING OTHER TABLES + JUMPE D,TD.UP2 ; NO REPEATING SEQ + ADD E,TD.GET+1(TVP) ; COMP LNTH OF REPEATING SEQ + HLRE E,(E) ; E ==> - LNTH OF TEMPLATE + ADDI E,(D) ; E ==> -LENGTH OF REP SEQ + MOVNS E + HRLM E,-5(P) ; SAVE IT AND BASIC + +TD.UP2: SKIPG D,-1(P) ; ANY LEFT? + JRST TD.UP1 + + MOVE E,TD.GET+1(TVP) + ADD E,(P) + MOVE E,(E) ; POINTER TO VECTOR IN E + MOVEM D,-6(P) ; SAVE ELMENT # + SKIPN B,-5(P) ; SKIP IF "RESTS" EXIST + SOJA D,TD.UP3 + + MOVEI 0,(B) ; BASIC LNT TO 0 + SUBI 0,(D) ; SEE IF PAST BASIC + JUMPGE 0,.-3 ; JUMP IF O.K. + MOVSS B ; REP LNT TO RH, BASIC TO LH + IDIVI 0,(B) ; A==> -WHICH REPEATER + MOVNS A + ADD A,-5(P) ; PLUS BASIC + ADDI A,1 ; AND FUDGE + MOVEM A,-6(P) ; SAVE FOR PUTTER + ADDI E,-1(A) ; POINT + SOJA D,.+2 + +TD.UP3: ADDI E,(D) ; POINT TO SLOT + XCT (E) ; GET THIS ELEMENT INTO A AND B + MOVEM A,-3(P) ; SAVE TYPE FOR LATER PUT + MOVEM B,-2(P) + MOVE C,B ; VALUE TO C FOR VALUPD + GETYP B,A + MOVEI A,-3(P) ; TELL OTHER GUYS THEY CANT DIRECTLY MUNG + MOVSI D,400000 ; RESET FOR MARK + PUSHJ P,VALUPD ; AND MARK THIS GUY (RET FIXED POINTER IN A) + MOVE C,-4(P) ; GET POINTER FOR UPDATE OF ELEMENT + MOVE E,TD.PUT+1(TVP) + SOS D,-1(P) ; RESTORE COUNT + ADD E,(P) + MOVE E,(E) ; POINTER TO VECTOR IN E + MOVE B,-6(P) ; SAVED OFFSET + ADDI E,(B)-1 ; POINT TO SLOT + MOVE A,-3(P) ; RESTORE TYPE WORD + MOVE B,-2(P) + XCT (E) ; SMASH IT BACK + FATAL TEMPLATE LOSSAGE + MOVE C,-4(P) + JRST TD.UP2 + +TD.UP1: SUB P,[7,,7] + MOVSI D,400000 ; RESTORE MARK/UNMARK BIT + JRST VECUP4 + + ; UPDATE ATOM VALUE CELLS + +ATOMUP: SUBI A,-1(B) ; POINT TO VALUE CELL + HLRZ B,(A) + HRRZ 0,(A) ;GOBBLE BINDID + JUMPN 0,.+3 ;NOT GLOBAL + CAIN B,TLOCI ;IS IT A LOCATIVE? + MOVEI B,TVEC ;MARK AS A VECTOR + HRRZ 0,1(A) ; GET POINTER + CAML 0,VECBOT + CAMLE 0,VECTOP + JRST .+2 ; OUT OF BOUNDS, DONT UPDATE + PUSHJ P,VALPD1 ;UPDATE IT + MOVEI B,TOBLS ; TYPE TO OBLIST + SKIPGE 2(A) + PUSHJ P,[AOJA A,VALPD1] + JRST VECUP4 + +; UPDATE PROCESS VECTOR + +PVPUP: SUBI A,-1(B) ;POINT TO TOP + HRRM LPVP,BINDID(A) ;CHAIN ALL PROCESSES TOGETHER + MOVEI LPVP,(A) + HRRZ 0,TBSTO+1(A) ;POINT TO CURRENT FRAME + HRRM 0,TBSTO(A) ;SAVE + HRRZ 0,TPSTO+1(A) ;0_SAVED TP POINTER + HLRE B,TPSTO+1(A) + SUBI 0,-1(B) ;0 _ POINTER TO OLD DOPE WORD + HRRM 0,TPSTO(A) + JRST VECUP3 + + + ;THIS SUBROUTINE TAKES CARE OF UPDATING ASSOCIATION BLOCKS + +ASOUP: SUBI A,-1(B) ;POINT TO START OF BLOCK + HRRZ B,ASOLNT-1(A) ;POINT TO NEXT + JUMPE B,ASOUP1 + HRRZ C,ASOLNT+1(B) ;AND GET ITS RELOC IN C + SUBI C,ASOLNT+1(B) ; RELATIVIZE + ADDM C,ASOLNT-1(A) ;C NOW HAS UPDATED PONTER +ASOUP1: HLRZ B,ASOLNT-1(A) ;GET PREV BLOCK POINTER + JUMPE B,ASOUP2 + HRRZ F,ASOLNT+1(B) ;AND ITS RELOCATION + SUBI F,ASOLNT+1(B) ; RELATIVIZE + MOVSI F,(F) + ADDM F,ASOLNT-1(A) ;RELOCATE +ASOUP2: HRRZ B,NODPNT(A) ;UPDATE NODE CHAIN + JUMPE B,ASOUP4 + HRRZ C,ASOLNT+1(B) ;GET RELOC + SUBI C,ASOLNT+1(B) ; RELATIVIZE + ADDM C,NODPNT(A) ;ANID UPDATE +ASOUP4: HLRZ B,NODPNT(A) ;GET PREV POINTER + JUMPE B,ASOUP5 + HRRZ F,ASOLNT+1(B) ;RELOC + SUBI F,ASOLNT+1(B) + MOVSI F,(F) + ADDM F,NODPNT(A) +ASOUP5: HRLI A,-3 ;SET TO UPDATE OTHER CONTENTS + +ASOUP3: HLRZ B,(A) ;GET TYPE + PUSHJ P,VALPD1 ;UPDATE + ADD A,[1,,2] ;MOVE POINTER + JUMPL A,ASOUP3 + JRST VECUP4 ;AND QUIT + + ;VALUPD UPDATES A SINLE VALUE FROM EITHER PAIR SPACE OR VECTOR SPACE +;GETS POINTER TO TYPE CELL IN RH OF A +;TYPE IN RH OF B (LH MUST BE 0) +;VALUE IN C + +VALPD1: MOVE C,1(A) ;GET VALUE TO UPDATE +VALUPD: MOVEI 0,(C) + CAIGE 0,@PURBOT ; SKIP IF PURE, I.E. DONT HACK + TRNN C,-1 ;ANY POINTER PART? + JRST CPOPJ ;NO, LEAVE + ANDI B,TYPMSK + LSH B,1 ;SET TYPE TIMES 2 + HRRZ B,@TYPNT ;GET STORAGE ALLOCATION TYPE + ANDI B,SATMSK + CAIG B,NUMSAT ; SKIP IF TEMPLATE + JRST @UPDTBS(B) ;AND DISPATCH THROUGH STORAGE ALLOCATION DISPATCH TABLE + AOJA C,TMPLUP + +;SAT DISPATCH TABLE + +DISTBS UPDTBS,CPOPJ,[[SNWORD,NWRDUP],[STPSTK,STCKUP] +[SFRAME,FRAMUP],[STBASE,TBUP],[SARGS,ARGUP],[SBYTE,BYTUP],[SATOM,NWRDUP],[SPSTK,STCKUP] +[SLOCID,LOCUP],[SPVP,NWRDUP],[S2NWORD,NWRDUP],[SABASE,ABUP],[SCHSTR,BYTUP],[SASOC,ASUP] +[SLOCA,ARGUP],[SLOCU,NWRDUP],[SLOCN,ASUP],[SLOCS,BYTUP],[SGATOM,NWRDUP]] + + + + +;PAIR POINTER UPDATE +2WDUP: MOVEI 0,(C) + CAIGE 0,@PURBOT ; SKIP AND IGNORE IF PURE + TRNN C,-1 ;POINT TO NIL? + POPJ P, ;YES -- NO UPDATE NEEDED + SKIPGE B,(C) ;NO -- IS THIS A BROKEN HEART + HRRM B,1(A) ;YESS -- STORE NEW VALUE + SKIPE B,PARNEW ;IF LIST SPACE IS MOVING + ADDM B,1(A) ;THEN ADD OFFSET TO VALUE + POPJ P, ;FINISHED + +; HERE TO UPDATE ASSOCIATIONS + +ASUP: HRLI C,-ASOLNT ;MAKE INTO VECTOR POINTER + JRST NWRDUP + ;VECTOR, ATOM, STACK, AND BASE POINTER UPDATE + +LOCUP: HRRZ B,(A) ;CHECK IF IT IS TIMED + JUMPN B,LOCUP1 ;JUMP IF TIMED, OTHERWISE TREAT LIKE VECTORE + +NWRDUP: HLRE B,C ;EXTEND COUNT IN B + SUBI C,-1(B) ;SET C TO POINT TO DOPE WORD +TMPLUP: HRRZ B,(C) ;EXTEND RELOCATION IN B + SUBI B,(C) ; RELATIVIZE + ADDM B,1(A) ;AND ADD RELOCATION TO STORED DATUM + HRRZ C,-1(C) ;GET GROWTH SPECS + JUMPE C,CPOPJ ;NO GROWTH, LEAVE + LDB C,[111100,,C] ;GET UPWORD GROWTH + TRZN C,400 ;FLUSH SIGN AN NEGATR DIRECTION + MOVNS C + SKIPE GCDNTG ; SKIP IF GROWTH WINS + JUMPL C,CPOPJ ; POS GROWTH, LOSE + ASH C,6+18. ;TO LH AND TIMES 100(8) + ADDM C,1(A) ;UPDATE POINTER + POPJ P, + + +LOCUP1: +STCKUP: MOVSI B,PDLBUF ;GET OFFSET FOR PDLS + ADDM B,1(A) ;AND ADD TO COUNT + JRST NWRDUP ;NOW TREAT LIKE VECTOR + +BYTUP: MOVEI C,(A) ; SET TO GET DOPE WORD + PUSH P,A + PUSHJ P,BYTDOP + POP P,C + HRRZ B,(A) ;SET B TO RELOCATION FOR THIS VEC + SUBI B,(A) ; RELATIVIZE + ADDM B,1(C) ;AND UPDATE VALUE + MOVE A,C ; FIX UP FOR SCANNER + POPJ P, ;DONE WITH UPDATE + +ARGUP: +ABUP: HLRE B,C ;GET LENGTH + SUB C,B ;POINT TO FRAME + HLRZ B,(C) ;GET TYPE OF NEXT GOODIE + ANDI B,TYPMSK + CAIN B,TINFO ;IS IT A FRAME + ADD C,1(C) ;NO, POINT TO FRAME + CAIE B,TINFO ;IF IT IS A FRAME + ADDI C,FRAMLN ;POINT TO ITS BASE +TBUP: MOVE C,TPSAV(C) ;GET A ASTACK POINTER TO FIND DOPE WORD + HLRE B,C ;UPDATE BASED ON THIS POINTER + SUBI C,(B) +ABUP1: HRRZ B,1(C) ;GET RELOCATION + SUBI B,1(C) ; RELATIVIZE + ADDM B,1(A) ;AND MUNG POINTER + POPJ P, + +FRAMUP: HRRZ B,(A) ;UPDATE PVP + HRRZ C,(B) ;IN CELL + SUBI C,(B) ; RELATIVIZE + ADDM C,(A) + HLRZ C,(B) + ANDI C,377777 + SUBI B,-1(C) ;ADDRESS OF PV + HRRZ C,TPSTO(B) ;IF TPSTO HAS OLD TP DOPE WORD, + JUMPN C,ABUP2 ;USE IT + HRRZ C,TPSTO+1(B) ;ELSE, GENERATE IT + HLRE B,TPSTO+1(B) + SUBI C,-1(B) +ABUP2: SOJA C,ABUP1 ; FUDGE AND GO + + ;VECTOR SHRINKING PHASE + +VECSH: SUBI A,1 ;POOINT TO 1ST DOPE WORD +VECSH1: CAMGE A,VECBOT ;FINISHED + POPJ P, ;YES, QUIT + HRRZ B,-1(A) ;GET A SPEC + JUMPE B,NXTSHN ;IGNORE IF NONE + PUSHJ P,GETGRO ;GET THE SPECS + JUMPGE C,SHRNBT ;SHRINKIGN AT BOTTOM + MOVEI E,(A) ;COPY POINTER + ADD A,C ;POINT TO NEW DOPE LOCATION WITH E + MOVE F,-1(E) ;GET OLD DOPE + ANDCMI F,777000 ;KILL THIS SPEC + MOVEM F,-1(A) ;STORE + MOVE F,(E) ;OTHER DOPE WORD + ADD F,C ; UPDATE DESTINATION + HRLZI C,(C) ;TO LH + ADD F,C ;CHANGE LENGTH + MOVEM F,(A) ;AND STORE + MOVMS C ;PLUSIFY + HRRI C,(E) ; MAKE NOT MOVE + MOVEM C,(E) ;AND STORE + SETZM -1(E) +SHRNBT: JUMPGE B,NXTSHN ;GROWTH, IGNOORE + MOVM E,B ;GET A POSITIVE COPY + HRLZI B,(B) ;TO LH + ADDM B,(A) ;ADD INTO DOPE WORD + MOVEI 0,777 ;SET TO CLOBBER GROWTH + ANDCAM 0,-1(A) ;CLOBBER + HLRZ B,(A) ;GET NEW LENGTH + SUBI A,(B) ;POINT TO LOW END + HRLI E,(A) ; MAKE NON MOVER + MOVSM E,(A) ;STORE + SETZM -1(A) + +NXTSHN: HLRZ B,(A) ;GET LENGTH + JUMPE B,VCMLOS ;LOOSE + SUBI A,(B) ;STEP + JRST VECSH1 + +GETGRO: LDB C,[111100,,B] ;GET UPWARD GROWTH + TRZE C,400 ;CHECK AND MUNG SIGN + MOVNS C + ASH C,6 ;?IMES 100 + ANDI B,777 ;AND GET DOWN GROWTH + TRZE B,400 ;CHECK AND MUNG SIGN + MOVNS B + ASH B,6 + POPJ P, + ;VECMOV -- MOVES VECTOR DATA TO WHERE RELOC FIELDS OF +;VECTORS INDICATE. MOVES DOPEWDS UP FOR VECTORS GROWING AT +;THE END. +;CALLED WITH VECTOP IN A. CALLS PARMOV TO MOVE PAIRS + +VECMOV: SUBI A,1 ;SET A TO ADDR OF TOP DOPE WD + MOVSI D,400000 ;NEGATIVE D MARKS END OF BACK CHAIN + MOVEI TYPNT,0 ;CLEAR ON GOING ADDRESS FOR FORWARD RESUME +VECMO1: CAMGE A,VECBOT ;GOT TO BOTTOM OF VECTORS + JRST PARMOV ;YES, MOVE LIST ELEMENTS AND RETURN + MOVEI C,(A) ;NO, COPY ADDR OF THIS DOPEWD + HRRZ B,(A) ;GET RELOCATION OF THIS VECTOR + SUBI B,(A) ; RELATIVIZE + JUMPL B,VECMO5 ;IF MOVING DOWNWARD, MAKE BACK CHAIN + JUMPE B,VECMO4 ;IF NON MOVER, JUST ADJUST DOPW AND MOVE ON + + ADDI C,(B) ;SET ADDR OF LAST DESTINATION WD + HRLI B,A ;MAKE B INDEX ON A + HLL A,(A) ;COUNT TO A LEFT HALF + + POP A,@B ;MOVE A WORD + TLNE A,-1 ;REACHED END OF MOVING + JRST .-2 ;NO, REPEAT + ;YES, NOTE A HAS ADDR OF NEXT DOPEWD + ;HERE TO ADJUST LOCATION OF DOPEWDS FOR GROWTH (FORWARDLY) +VECMO2: LDB B,[111000,,-1(C)] ;GET HIGH GROWTH FIELD + JUMPE B,VECMO3 ;IF NO GROWTH, DONT MOVE + SKIPE GCDNTG ; SKIP IF GROWTH PERMITTED + JRST VECMO3 + ASH B,6 ;EXPRESS GROWTH IN WORDS + HRLI C,2 ;SET COUNT FOR POPPING 2 DOPEWDS + HRLI B,C ;MAKE B INDEX ON C + POP C,@B ;MOVE PRIME DOPEWD + POP C,@B ;MOVE AUX DOPEWD +VECMO3: JUMPL D,VECMO1 ;IF NO BACK CHAIN THEN MOVE ON + JRST VECMO6 ;YES, BACKCHAINING, CONTINUE SAME + +;HERE TO SKIP OVER STILL VECTORS (FORWARDLY) +VECMO4: HLRZ B,(A) ;GET SIZE OF UNMOVER + SUBI A,(B) ;UPDATE A TO NEXT VECTOR + JRST VECMO2 ;AND GO CLEAN UP GROWTH +;HERE TO ESTABLISH A BACKWARDS CHAIN +VECMO5: EXCH D,(A) ;CHAIN FORWARD + HLRZ B,D ;GET SIZE + SUBI A,(B) ;GO ON TO NEXT VECOTR + CAMGE A,VECBOT ;HAVE WE GOT TO END OF VECTORS? + JRST VECMO7 ;YES, GO MOVE PAIRS AND UNCHAIN + HRRZ B,(A) ;GET RELOCATION OF THIS VECTOR + SUBI B,(A) ; RELATIVIZE + JUMPLE B,VECMO5 ;IF NOT POSITIVE, CONTINUE CHAINING + MOVEM A,TYPNT ;SAVE ADDR FOR FORWARD RESUME + +;HERE TO UNCHAIN A VECTOR, MOVE IT, AND ADJUST DOPEWDS +VECMO6: HLRZ B,D ;GET SIZE + MOVEI F,1(A) ;GET A COPY OF BEGINNING OF VECTOR + ADDI A,(B) ;SET TO POINT TO ADDR OF DOPEWD CURRENTLY IN D + EXCH D,(A) ;AND UNCHAIN + HRRZ B,(A) ;GET RELOCATION FOR THIS VECTOR + SUBI B,(A) ; RELATIVIZE + MOVEI C,(A) ;COPY A POINTER TO DOPEW + SKIPGE D ;HAVE WE REACHED THE TOP OF THE CHAIN? + MOVE A,TYPNT ;YES, RESTORE FORWARD MOVE RESUME ADDR + JUMPE B,VECMO2 ;IF STILL VECTOR,GO ADJUST DOPEWDS + ADDI C,(B) ;MAKE C POINT TO NEW DOPEW ADDR + ADDI B,(F) ;B RH NEW 1ST WORD + HRLI B,(F) ;B LH OLD 1ST WD ADDR + BLT B,(C) ;COPY THE DATA + JRST VECMO2 ;AND GO ADJUST DOPEWDS + +;HERE TO STOP CHAINING BECAUSE OF BOTTOM OF VECTOR SPACE +VECMO7: MOVEM A,TYPNT + PUSH P,D + PUSHJ P,PARMOV + POP P,D + MOVE A,TYPNT + JRST VECMO6 + ;PAIR MOVEMENT PHASE -- USES PARNEW,PARBOT, AND PARTOP TO MOVE PAIRS +;TO NEW HOMES + +PARMOV: SKIPN A,PARNEW ;IS THERE ANY PAIR MOVEMENT? + POPJ P, ;NO, RETURN + JUMPL A,PARMO2 ;YES -- IF MOVING DOWNWARDS, GO DO A BLT + HRLI A,B ;MOVING UPWARDS SETAC A TO INDEX OFF AC B + MOVE B,PARTOP ;GET HIGH PAIR ADDREESS + SUB B,PARBOT ;AND SUBTRACT BOTTOM TO GET NUMBER OF PAIRS + HRLZS B ;PUT COUNT IN LEFT HALF + HRR B,PARTOP ;GET HIGH ADDRESS PLUS ONE IN RH + SUBI B,1 ;AND SUBTRACT ONE TO POINT TO LAST WORD TO BE MOVED + +PARMO1: TLNN B,-1 ;HAS COUNT REACHED ZERO? + JRST PARMO3 ;YES -- FINISH UP + POP B,@A ;NO -- TRANSFER2YU NEXT WORD + JRST PARMO1 ;AND REPEAT + +PARMO2: MOVE B,PARBOT ;GET ADDRESS OF FIRST SOURCE WD + HRLS B ;IN BOTH HALVES OF AC B + ADD B,A ;MAKE RH OF B POINT TO FIRST DESTINATION WORD + ADD A,PARTOP ;MAKE RH OF A POINT TO LAST DESTINATION WORD PLUS ONE + BLT B,-1(A) ;AND TRANSFER THE BLOCK OF PAIRS + +PARMO3: MOVE A,PARNEW ;GET OFFSET FOR PAIR SPACE + ADDM A,PARBOT ;AND CORRECT BOTTOM + ADDM A,PARTOP ;AND CORRECT TOP. + SETZM PARNEW ;CLEAR SO IF CALLED TWICE, NO LOSSAGE + POPJ P, + ;VECZER -- CLEARS DATA IN AREAS JUST GROWN +;UPDATES SIZE OF VECTORS +;CLEARS RELOCATION AND GROWTH FIELDS IN DOPEWDS +;CALLED WITH NEW VECTOP IN A (VECBOT SHOULD BE NEW TOO) + +VECZER: SUBI A,1 ;MAKE A POINT TO HIGH VECTORS +VECZE1: CAMGE A,VECBOT ;REACHED BOTTOM OF VECTORS? + POPJ P, ;YES, RETURN + HLLZS F,(A) ;NO, CLEAR RELOCATION GET SIZE + HLRZS F ;AND PUT SIZE IN RH OF F + HRRZ B,-1(A) ;GET GROWTH INTO B + JUMPN B,VECZE3 ;IF THERE IS SOME GROWTH, GO DO IT +VECZE2: SUBI A,(F) ;GROWTH DONE, MOVE ON TO NEXT VECTOR + JRST VECZE1 ;AND REPEAT + +VECZE3: HLLZS -1(A) ;CLEAR GROWTH IN THE VECTOR + LDB C,[111000,,B] ;GET HIGH ORDER GROWTH IN C + SKIPE GCDNTG + JRST VECZE5 + ANDI B,377 ;AND LIMIT B TO LOW SIDE + ASHC B,6 ;EXPRESS GROWTH IN WORDS + JUMPE C,VECZE4 ;IF NO HIGH GROWTH SKIP TO LOW GROWTH + ADDI F,(C) ;ADD HIGH GROWTH TO SIZE + SUBM A,C ;GET ADDR OF 2ND WD TO BE ZEROED + SETZM -1(C) ;CLEAR 1ST WORD + HRLI C,-1(C) ;MAKE C A CLEARING BLT POINTER + BLT C,-2(A) ;AND CLEAR HIGH END DATA + +VECZE4: JUMPE B,VECZE5 ;IF NO LOW GROWTH SKIP TO SIZE UPDATE + MOVNI C,(F) ;GET NEGATIVE SIZE SO FAR + ADDI C,(A) ;AND MAKE C POINT TO LAST WORD OF STUFF TO BE CLEARED + ADDI F,(B) ;UPDATE SIZE + SUBM C,B ;MAKE B POINT TO LAST WD OF NEXT VECT + ADDI B,2 ;AND NOW TO 2ND DATA WD TO BE CLEARED + SETZM -1(B) ;CLEAR 1ST DATA WD + HRLI B,-1(B) ;MAKE B A CLEARING BLT POINTER + BLT B,(C) ;AND CLEAR THE LOW DATA + +VECZE5: HRLZM F,(A) ;STORE THE NEW SIZE IN DOPEWD + JRST VECZE2 + + ;SUBROUTINE TO REBUILD THE NOW DEFUNCT HASH TABLE + +REHASH: MOVE TVP,TVPSTO+1(PVP) ;RESTORE TV POINTER + MOVE D,ASOVEC+1(TVP) ;GET POINTER TO VECTOR + MOVEI E,(D) + PUSH P,E ;PUSH A POINTER + HLRE A,D ;GET -LENGTH + MOVMS A ;AND PLUSIFY + PUSH P,A ;PUSH IT ALSO + +REH3: HRRZ C,(D) ;POINT TO FIRST BUCKKET + HLRZS (D) ;MAKE SURE NEW POINTER IS IN RH + JUMPE C,REH1 ;BUCKET EMPTY, QUIT + +REH2: MOVEI E,(C) ;MAKE A COPY OF THE POINTER + MOVE A,ITEM(C) ;START HASHING + TLZ A,TYPMSK#777777 ; KILL MONITORS + XOR A,ITEM+1(C) + MOVE 0,INDIC(C) + TLZ 0,TYPMSK#777777 + XOR A,0 + XOR A,INDIC+1(C) + TLZ A,400000 ;MAKE SURE FINAL HASH IS + + IDIV A,(P) ;DIVIDE BY TOTAL LENGTH + ADD B,-1(P) ;POINT TO WINNING BUCKET + + MOVE C,[002200,,(B)] ;BYTE POINTER TO RH + CAILE B,(D) ;IF PAST CURRENT POINT + MOVE C,[222200,,(B)] ;USE LH + LDB A,C ;GET OLD VALUE + DPB E,C ;STORE NEW VALUE + HRRZ B,ASOLNT-1(E) ;GET NEXT POINTER + HRRZM A,ASOLNT-1(E) ;AND CLOBBER IN NEW NEXT + SKIPE A ;SKKIP IF NOTHING PREVIOUSLY IN BUCKET + HRLM E,ASOLNT-1(A) ;OTHERWISE CLOBBER + SKIPE C,B ;SKIP IF END OF CHAIN + JRST REH2 +REH1: AOBJN D,REH3 + + SUB P,[2,,2] ;FLUSH THE JUNK + POPJ P, + VCMLOS: FATAL AGC--VECTOR WITH ZERO IN DOPE WORD LENGTH + + +; THESE ARE THE MESSAGES INDICATING THE CAUSE OF THE GC + +MSGGCT: [ASCIZ /USER CALLED- /] + [ASCIZ /FREE STORAGE- /] + [ASCIZ /TP-STACK- /] + [ASCIZ /TOP-LEVEL LOCALS- /] + [ASCIZ /GLOBAL VALUES- /] + [ASCIZ /TYPES- /] + [ASCIZ /STATIONARY IMPURE STORAGE- /] + [ASCIZ /P-STACK /] + [ASCIZ /BOTH STACKS BLOWN- /] + [ASCIZ /PURE STORAGE- /] + [ASCIZ /GC-RCALL- /] + +; THESE ARE MESSAGES INDICATING WHO CAUSED THE GC + +MSGGFT: 0 + [ASCIZ /BLOAT /] + [ASCIZ /GROW /] + [ASCIZ /LIST /] + [ASCIZ /VECTOR /] + [ASCIZ /SET /] + [ASCIZ /SETG /] + [ASCIZ /FREEZE /] + [ASCIZ /PURE-PAGE LOADER /] + [ASCIZ /GC /] + [ASCIZ /INTERRUPT-HANDLER /] + [ASCIZ /NEWTYPE /] + + + + +;LOCAL VARIABLES + +IMPURE +; LOCATIONS USED BY BLOAT-STAT TO HELP THE USER PICK BLOAT SPECIFICATIONS. +; + +GCNO: 0 ; USER-CALLED GC +BSTGC: 0 ; FREE STORAGE + 0 ; BLOWN TP + 0 ; TOP-LEVEL LVALS + 0 ; GVALS + 0 ; TYPE + 0 ; STORAGE + 0 ; P-STACK + 0 ; BOTH STATCKS BLOWN + 0 ; STORAGE + +BSTAT: +NOWFRE: 0 ; FREE STORAGE FROM LAST GC +CURFRE: 0 ; STORAGE USED SINCE LAST GC +MAXFRE: 0 ; MAXIMUM FREE STORAGE ALLOCATED +USEFRE: 0 ; TOTAL FREE STORAGE USED +NOWTP: 0 ; TP LENGTH FROM LAST GC +CURTP: 0 ; # WORDS ON TP +CTPMX: 0 ; MAXIMUM SIZE OF TP SO FAR +NOWLVL: 0 ; # OF TOP-LEVEL LVAL-SLOTS +CURLVL: 0 ; # OF TOP-LEVEL LVALS +NOWGVL: 0 ; # OF GVAL SLOTS +CURGVL: 0 ; # OF GVALS +NOWTYP: 0 ; SIZE OF TYPE-VECTOR +CURTYP: 0 ; # OF TYPES +NOWSTO: 0 ; SIZE OF STATIONARY STORAGE +CURSTO: 0 ; STATIONARY STORAGE IN USE +CURMAX: 0 ; MAXIMUM BLOCK OF CONTIGUOUS STORAGE +NOWP: 0 ; SIZE OF P-STACK +CURP: 0 ; #WORDS ON P +CPMX: 0 ; MAXIMUM P-STACK LENGTH SO FAR +GCCAUS: 0 ; INDICATOR FOR CAUSE OF GC +GCCALL: 0 ; INDICATOR FOR CALLER OF GC + + +; THIS GROUP OF VARIABLES DETERMINES HOW THINGS GROW +LVLINC: 6 ; LVAL INCREMENT ASSUMED TO BE 64 SLOTS +GVLINC: 4 ; GVAL INCREMENT ASSUMED TO BE 64 SLOTS +TYPIC: 1 ; TYPE INCREMENT ASSUMED TO BE 32 TYPES +STORIC: 2000 ; STORAGE INCREMENT USED BY NFREE (MINIMUM BLOCK-SIZE) + + +RCL: 0 ; POINTER TO LIST OF RECYCLEABLE LIST CELLS +GCMONF: 0 ; NON-ZERO SAY GIN/GOUT +GCDANG: 0 ; NON-ZERO, STORAGE IS LOW +GCDNTG: 0 ; NON-ZERO ABORT GROWTHS +GETNUM: 0 ;NO OF WORDS TO GET +PARNUM: 0 ;NO OF PAIRS MARKED +VECNUM: 0 ;NO OF WORDS IN MARKED VECTORS +CORSET: 0 ;NO OF BLOCKS OF CORE, IF GIVING CORE AWAY +CORTOP: 0 ;CURRENT TOP OF CORE, EXCLUDING ANY TO BE GIVEN AWAY + +;VARIABLES WHICH DETERMIN WHEN MUDDLE WILL ASK FOR MORE CORE, +;AND WHEN IT WILL GET UNHAPPY + +SYSMAX: 50. ;MAXIMUM SIZE OF MUDDLE +FREMIN: 20000 ;MINIMUM FREE WORDS +FREDIF: 10000 ;DIFFERENCE BETWEEN FREMIN AND MAXIMUM NUMBER OF FREE WORDS +;POINTER TO GROWING PDL + +TPGROW: 0 ;POINTS TO A BLOWN TP +PPGROW: 0 ;POINTS TO A BLOWN PP +TIMOUT: 0 ;POINTS TO TIMED OUT PDL +PGROW: 0 ;POINTS TO A BLOWN P + +;IN GC FLAG + +GCFLG: 0 +GCFLCH: 0 ; TELL INT HANDLER TO ITIC CHARS +GCHAIR: 1 ; COUNTS GCS AND TELLS WHEN TO HAIRIFY +SHRUNK: 0 ; NON-ZERO=> AVECTOR(S) SHRUNK +GREW: 0 ; NON-ZERO=> A VECTOR(S) GREW +SPARNW: 0 ; SAVED PARNEW +GCDOWN: 0 ; AMOUNT TO TRY AND MOVE DOWN +CURPLN: 0 ; LENGTH OF CURRENTLY RUNNING PURE RSUBR + +; VARS ASSOCIATED WITH BLOAT LOGIC + +TPBINC: 0 +GLBINC: 0 +TYPINC: 0 + +; VARS FOR PAGE WINDOW HACKS + +WNDBOT: 0 ; BOTTOM OF WINDOW +WNDTOP: 0 +BOTNEW: (FPTR) ; POINTER TO FRONTIER +GCTIM: 0 + +PURE + + +END + + + + + + TITLE ARITHMETIC PRIMITIVES FOR MUDDLE + +.GLOBAL HI,RLOW,CPLUS,CMINUS,CTIMES,CDIVID,CFIX,CFLOAT +.GLOBAL CLQ,CGQ,CLEQ,CGEQ,C1Q,C0Q,CMAX,CMIN,CABS,CMOD,CCOS,CSIN,CATAN,CLOG +.GLOBAL CEXP,CSQRT,CTIME,CORB,CXORB,CANDB,CEQVB,CRAND,SAT,BFLOAT + +;BKD + +;DEFINES MUDDLE PRIMITIVES: FIX,FLOAT,ATAN,IEXP,LOG, +; G?,L?,0?,1?,+,-,*,/,MAX,MIN,ABS,SIN,COS,SQRT,RANDOM, +; TIME,SORT. + +RELOCATABLE + +.INSRT MUDDLE > + +O=0 + + +DEFINE TYP1 + (AB) TERMIN +DEFINE VAL1 + (AB)+1 TERMIN + +DEFINE TYP2 + (AB)+2 TERMIN +DEFINE VAL2 + (AB)+3 TERMIN + +DEFINE TYP3 + (AB)+4 TERMIN +DEFINE VAL3 + (AB)+5 TERMIN + +DEFINE TYPN + (D) TERMIN +DEFINE VALN + (D)+1 TERMIN + + +YES: MOVSI A,TATOM ;RETURN PATH FOR 'TRUE' + MOVE B,MQUOTE T + AOS (P) + POPJ P, + +NO: MOVSI A,TFALSE ;RETURN PATH FOR 'FALSE' + MOVEI B,NIL + POPJ P, + + ;ERROR RETURNS AND OTHER UTILITY ROUTINES + +OVRFLW==10 +OVRFLD: PUSH TP,$TATOM + PUSH TP,EQUOTE OVERFLOW + JRST CALER1 + +CARGCH: GETYP 0,A ; GET TYPE + CAIN 0,TFLOAT + POPJ P, + JSP A,BFLOAT + POPJ P, + +ARGCHK: ;CHECK FOR SINGLE FIXED OR FLOATING + ;ARGUMENT IF FIXED CONVERT TO FLOATING + ;RETURN FLOATING ARGRUMENT IN B ALWAYS + ENTRY 1 + GETYP C,TYP1 + MOVE B,VAL1 + CAIN C,TFLOAT ;FLOATING? + POPJ P, ;YES, RETURN + CAIE C,TFIX ;FIXED? + JRST WTYP1 ;NO, ERROR + JSP A,BFLOAT ;YES, CONVERT TO FLOATING AND RETURN + POPJ P, + +OUTRNG: PUSH TP,$TATOM + PUSH TP,EQUOTE ARGUMENT-OUT-OF-RANGE + JRST CALER1 + +NSQRT: PUSH TP,$TATOM + PUSH TP,EQUOTE NEGATIVE-ARGUMENT + JRST CALER1 + +DEFINE MFLOAT AC + IDIVI AC,400000 + FSC AC+1,233 + FSC AC,254 + FADR AC,AC+1 + TERMIN + +BFLOAT: MFLOAT B + JRST (A) + +OFLOAT: MFLOAT O + JRST (C) + +BFIX: MULI B,400 + TSC B,B + ASH C,(B)-243 + MOVE B,C + JRST (A) + + ;DISPATCH TABLES USED TO CONTROL THE FLOW OF THE VARIOUS PRIMITIVES + +TABLE2: NO ;TABLE2 (0) +TABLE3: YES ;TABLE2 (1) & TABLE3 (0) + NO ;TABLE2 (2) + YES + NO + +TABLE4: NO + NO + YES + YES + + + +FUNC: JSP A,BFIX + JSP A,BFLOAT + SUB B,VALN + IDIV B,VALN + ADD B,VALN + IMUL B,VALN + JSP C,SWITCH + JSP C,SWITCH + + + +FLFUNC==.-2 + FSBR B,O + FDVR B,O + FADR B,O + FMPR B,O + JSP C,FLSWCH + JSP C,FLSWCH + +DEFVAL==.-2 + 0 + 1 + 0 + 1 + 377777,,-1 + 400000,,1 + +DEFTYP==.-2 + TFIX,, + TFIX,, + TFIX,, + TFIX,, + TFLOAT,, + TFLOAT,, + ;PRIMITIVES FLOAT AND FIX + +MFUNCTION FIX,SUBR + + ENTRY 1 + + JSP C,FXFL + MOVE B,1(AB) + CAIE A,TFIX + JSP A,BFIX + MOVSI A,TFIX + JRST FINIS + +MFUNCTION FLOAT,SUBR + + ENTRY 1 + + JSP C,FXFL + MOVE B,1(AB) + CAIE A,TFLOAT + JSP A,BFLOAT + MOVSI A,TFLOAT + JRST FINIS + +CFIX: GETYP 0,A + CAIN 0,TFIX + POPJ P, + JSP A,BFIX + MOVSI A,TFIX + POPJ P, + +CFLOAT: GETYP 0,A + CAIN 0,TFLOAT + POPJ P, + JSP A,BFLOAT + MOVSI A,TFLOAT + POPJ P, + +FXFL: GETYP A,(AB) + CAIE A,TFIX + CAIN A,TFLOAT + JRST (C) + JRST WTYP1 + + +MFUNCTION ABS,SUBR + ENTRY 1 + GETYP A,TYP1 + CAIE A,TFIX + CAIN A,TFLOAT + JRST MOVIT + JRST WTYP1 +MOVIT: MOVM B,VAL1 ;GET ABSOLUTE VALUE OF ARGUMENT +AFINIS: HRLZS A ;MOVE TYPE CODE INTO LEFT HALF + JRST FINIS + + + +MFUNCTION MOD,SUBR + ENTRY 2 + GETYP A,TYP1 + CAIE A,TFIX ;FIRST ARG FIXED ? + JRST WTYP1 + GETYP A,TYP2 + CAIE A,TFIX ;SECOND ARG FIXED ? + JRST WTYP2 + MOVE A,VAL1 + IDIV A,VAL2 ;FORM QUOTIENT & REMAINDER + JUMPGE B,.+2 ;Only return positive remainders + ADD B,VAL2 + MOVSI A,TFIX + JRST FINIS + ;PRIMITIVES PLUS, DIFFERENCE, TIMES, DIVIDE, MIN, AND MAX + +MFUNCTION MIN,SUBR + + ENTRY + + MOVEI E,6 + JRST GOPT + +MFUNCTION MAX,SUBR + + ENTRY + + MOVEI E,7 + JRST GOPT + +MFUNCTION DIVIDE,SUBR,[/] + + ENTRY + + MOVEI E,3 + JRST GOPT + +MFUNCTION DIFFERENCE,SUBR,[-] + + ENTRY + + MOVEI E,2 + JRST GOPT + +MFUNCTION TIMES,SUBR,[*] + + ENTRY + + MOVEI E,5 + JRST GOPT + +MFUNCTION PLUS,SUBR,[+] + + ENTRY + + MOVEI E,4 + +GOPT: MOVE D,AB ;ARGUMENT POINTER + HLRE A,AB + MOVMS A + ASH A,-1 + PUSHJ P,CARITH + JRST FINIS + +; BUILD COMPILER ENTRIES TO THESE ROUTINES + +IRP NAME,,[CMINUS,CDIVID,CPLUS,CTIMES,CMIN,CMAX]CODE,,[2,3,4,5,6,7] + +NAME: MOVEI E,CODE + JRST CARIT1 +TERMIN + +CARIT1: MOVEI D,(A) + ASH D,1 ; TIMES 2 + SUBI D,1 + HRLI D,(D) + SUBM TP,D ; POINT TO ARGS + PUSH TP,$TTP + PUSH TP,D + PUSHJ P,CARITH + POP TP,TP + SUB TP,[1,,1] + POPJ P, + +CARITH: MOVE B,DEFVAL(E) ; GET VAL + JFCL OVRFLW,.+1 + MOVEI 0,TFIX ; FIX UNTIL CHANGE + JUMPN A,ARITH0 ; AT LEAST ONE ARG + MOVE A,DEFTYP(E) + POPJ P, + +ARITH0: SOJE A,ARITH1 ; FALL IN WITH ONE ARG + MOVE B,1(D) + GETYP C,(D) ; TYPE OF 1ST ARG + ADD D,[2,,2] ; GO TO NEXT + CAIN C,TFLOAT + JRST ARITH3 + CAIN C,TFIX + JRST ARITH1 + JRST WRONGT + +ARITH1: GETYP C,(D) ; GET NEXT TYPE + CAIE C,TFIX + JRST ARITH2 ; TO FLOAT LOOP + XCT FUNC(E) ; DO IT + ADD D,[2,,2] + SOJG A,ARITH1 ; KEEP ADDING OR WHATEVER + JFCL OVRFLW,OVRFLD + MOVSI A,TFIX + POPJ P, + +ARITH3: GETYP C,(D) + MOVE 0,1(D) ; GET ARG + CAIE C,TFIX + JRST ARITH4 + PUSH P,A + JSP C,OFLOAT ; FLOAT IT + POP P,A + JRST ARITH5 +ARITH4: CAIE C,TFLOAT + JRST WRONGT + JRST ARITH5 + +ARITH2: CAIE C,TFLOAT ; FLOATER? + JRST WRONGT + PUSH P,A + JSP A,BFLOAT + POP P,A + MOVE 0,1(D) + +ARITH5: XCT FLFUNC(E) + ADD D,[2,,2] + SOJG A,ARITH3 + + JFCL OVRFLW,OVRFLD + MOVSI A,TFLOAT + POPJ P, + +SWITCH: XCT COMPAR(E) ;FOR MAX & MIN TESTING + MOVE B,VALN + JRST (C) +COMPAR==.-6 + CAMLE B,VALN + CAMGE B,VALN + + + +FLSWCH: XCT FLCMPR(E) + MOVE B,O + JRST (C) +FLCMPR==.-6 + CAMLE B,O + CAMGE B,O + ;PRIMITIVES ONEP AND ZEROP + +MFUNCTION ONEP,SUBR,[1?] + MOVEI E,1 + JRST JOIN + +MFUNCTION ZEROP,SUBR,[0?] + MOVEI E, + +JOIN: ENTRY 1 + GETYP A,TYP1 + CAIN A,TFIX ;fixed ? + JRST TESTFX + CAIE A,TFLOAT ;floating ? + JRST WTYP1 + MOVE B,VAL1 + CAMN B,NUMBR(E) ;equal to correct value ? + JRST YES1 + JRST NO1 + +TESTFX: CAMN E,VAL1 ;equal to correct value ? + JRST YES1 + +NO1: MOVSI A,TFALSE + MOVEI B,0 + JRST FINIS + +YES1: MOVSI A,TATOM + MOVE B,MQUOTE T + JRST FINIS + +NUMBR: 0 ;FLOATING PT ZERO + 201400,,0 ;FLOATING PT ONE + ;PRIMITIVES LESSP AND GREATERP + +MFUNCTION LEQP,SUBR,[L=?] + MOVEI E,3 + JRST ARGS + +MFUNCTION GEQP,SUBR,[G=?] + MOVEI E,2 + JRST ARGS + + +MFUNCTION LESSP,SUBR,[L?] + MOVEI E,1 + JRST ARGS + +MFUNCTION GREATERP,SUBR,[G?] + MOVEI E,0 + +ARGS: ENTRY 2 + MOVE B,VAL1 + MOVE A,TYP1 + GETYP 0,A + PUSHJ P,CMPTYP + JRST WTYP1 + MOVE D,VAL2 + MOVE C,TYP2 + GETYP 0,C + PUSHJ P,CMPTYP + JRST WTYP2 + PUSHJ P,ACOMPS + JFCL + JRST FINIS + +; COMPILERS ENTRIES TO THESE GUYS + +IRP NAME,,[CGQ,CLQ,CGEQ,CLEQ]COD,,[0,1,2,3] + +NAME: MOVEI E,COD + JRST ACOMPS +TERMIN + +ACOMPS: GETYP A,A + GETYP 0,C + CAIE 0,(A) + JRST COMPD ; COMPARING FIX AND FLOAT +TEST: CAMN B,D + JRST @TABLE4(E) + CAMG B,D + JRST @TABLE2(E) + JRST @TABLE3(E) + +CMPTYP: CAIE 0,TFIX + CAIN 0,TFLOAT + AOS (P) + POPJ P, +COMPD: EXCH B,D + CAIN A,TFLOAT + JSP A,BFLOAT + EXCH B,D + CAIN 0,TFLOAT + JSP A,BFLOAT +COMPF: JRST TEST + +MFUNCTION RANDOM,SUBR + ENTRY + HLRE A,AB + CAMGE A,[-4] ;At most two arguments to random to set seeds + JRST TMA + JRST RANDGO(A) + MOVE B,VAL2 ;Set second seed + MOVEM B,RLOW + MOVE A,VAL1 ;Set first seed + MOVEM A,RHI +RANDGO: PUSHJ P,CRAND + JRST FINIS + +CRAND: MOVE B,RLOW ;FREDKIN'S RANDOM NUMBER GENERATOR. + MOVE A,RHI + MOVEM A,RLOW + LSHC A,-43 + XORB B,RHI + MOVSI A,TFIX + POPJ P, + + MFUNCTION SQRT,SUBR + PUSHJ P,ARGCHK + JUMPL B,NSQRT + PUSHJ P,ISQRT + JRST FINIS + +ISQRT: MOVE A,B + ASH B,-1 + FSC B,100 +SQ2: MOVE C,B ;NEWTON'S METHOD, SPECINER'S HACK. + FDVRM A,B + FADRM C,B + FSC B,-1 + CAME C,B + JRST SQ2 + MOVSI A,TFLOAT + POPJ P, + +MFUNCTION COS,SUBR + PUSHJ P,ARGCHK + FADR B,[1.570796326] ;COS(X)=SIN (X+PI/2) + PUSHJ P,.SIN + MOVSI A,TFLOAT + JRST FINIS + +MFUNCTION SIN,SUBR + PUSHJ P,ARGCHK + PUSHJ P,.SIN + MOVSI A,TFLOAT + JRST FINIS + +.SIN: MOVM A,B + CAMG A,[.0001] + POPJ P, ;GOSPER'S RECURSIVE SIN. + FDVR B,[-3.0] ;SIN(X)=4*SIN(X/-3)**3-3*SIN(X/-3) + PUSHJ P,.SIN + FSC A,1 + FMPR A,A + FADR A,[-3.0] + FMPRB A,B + POPJ P, + +CSQRT: PUSHJ P,CARGCH + JUMPL B,NSQRT + JRST ISQRT + +CSIN: PUSHJ P,CARGCH +CSIN1: PUSHJ P,.SIN + MOVSI A,TFLOAT + POPJ P, + +CCOS: PUSHJ P,CARGCH + FADR B,[1.570796326] + JRST CSIN1 + MFUNCTION LOG,SUBR + PUSHJ P,ARGCHK ;LEAVES ARGUMENT IN B + PUSHJ P,ILOG + JRST FINIS + +CLOG: PUSHJ P,CARGCH + +ILOG: JUMPLE B,OUTRNG + LDB D,[331100,,B] ;GRAB EXPONENT + SUBI D,201 ;REMOVE BIAS + TLZ B,777000 ;SET EXPONENT + TLO B,201000 ; TO 1 + MOVE A,B + FSBR A,RT2 + FADR B,RT2 + FDVB A,B + FMPR B,B + MOVE C,[0.434259751] + FMPR C,B + FADR C,[0.576584342] + FMPR C,B + FADR C,[0.961800762] + FMPR C,B + FADR C,[2.88539007] + FMPR C,A + FADR C,[0.5] + MOVE B,D + FSC B,233 + FADR B,C + FMPR B,[0.693147180] ;LOG E OF 2 + MOVSI A,TFLOAT + POPJ P, + +RT2: 1.41421356 + MFUNCTION ATAN,SUBR + PUSHJ P,ARGCHK + PUSHJ P,IATAN + JRST FINIS + +CATAN: PUSHJ P,CARGCH + +IATAN: PUSH P,B + MOVM D,B + CAMG D,[0.4^-8] ;SMALL ENOUGH SO ATAN(X)=X? + JRST ATAN3 ;YES + CAML D,[7.0^7] ;LARGE ENOUGH SO THAT ATAN(X)=PI/2? + JRST ATAN1 ;YES + MOVN C,[1.0] + CAMLE D,[1.0] ;IS ABS(X)<1.0? + FDVM C,D ;NO,SCALE IT DOWN + MOVE B,D + FMPR B,B + MOVE C,[1.44863154] + FADR C,B + MOVE A,[-0.264768620] + FDVM A,C + FADR C,B + FADR C,[3.31633543] + MOVE A,[-7.10676005] + FDVM A,C + FADR C,B + FADR C,[6.76213924] + MOVE B,[3.70925626] + FDVR B,C + FADR B,[0.174655439] + FMPR B,D + JUMPG D,ATAN2 ;WAS ARG SCALED? + FADR B,PI2 ;YES, ATAN(X)=PI/2-ATAN(1/X) + JRST ATAN2 +ATAN1: MOVE B,PI2 +ATAN2: SKIPGE (P) ;WAS INPUT NEGATIVE? + MOVNS B ;YES,COMPLEMENT +ATAN3: MOVSI A,TFLOAT + SUB P,[1,,1] + POPJ P, + +PI2: 1.57079632 + MFUNCTION IEXP,SUBR,[EXP] + PUSHJ P,ARGCHK ;LEAVE FLOATING POINT ARG IN B + PUSHJ P,IIEXP + JRST FINIS + +CEXP: PUSHJ P,CARGCH + +IIEXP: PUSH P,B + MOVM A,B + SETZM B + FMPR A,[0.434294481] ;LOG BASE 10 OF E + MOVE D,[1.0] + CAMG A,D + JRST RATEX + MULI A,400 + ASHC B,-243(A) + CAILE B,43 + JRST OUTRNG + CAILE B,7 + JRST EXPR2 +EXPR1: FMPR D,FLOAP1(B) + LDB A,[103300,,C] + SKIPE A + TLO A,177000 + FADR A,A +RATEX: MOVEI B,7 + SETZM C +RATEY: FADR C,COEF2-1(B) + FMPR C,A + SOJN B,RATEY + FADR C,[1.0] + FMPR C,C + FMPR D,C + MOVE B,[1.0] + SKIPL (P) ;SKIP IF INPUT NEGATIVE + SKIPN B,D + FDVR B,D + MOVSI A,TFLOAT + SUB P,[1,,1] + POPJ P, + +EXPR2: LDB E,[030300,,B] + ANDI B,7 + MOVE D,FLOAP1(E) + FMPR D,D ;TO THE 8TH POWER + FMPR D,D + FMPR D,D + JRST EXPR1 + +COEF2: 1.15129278 + 0.662730884 + 0.254393575 + 0.0729517367 + 0.0174211199 + 2.55491796^-3 + 9.3264267^-4 + +FLOAP1: 1.0 + 10.0 + 100.0 + 1000.0 + 10000.0 + 100000.0 + 1000000.0 + 10000000.0 + ;BITWISE BOOLEAN FUNCTIONS + +MFUNCTION %ANDB,SUBR,ANDB + ENTRY + HRREI B,-1 ;START ANDING WITH ALL ONES + MOVE D,[AND B,A] ;LOGICAL INSTRUCTION + JRST LOGFUN ;DO THE OPERATION + +MFUNCTION %ORB,SUBR,ORB + ENTRY + MOVEI B,0 + MOVE D,[IOR B,A] + JRST LOGFUN + +MFUNCTION %XORB,SUBR,XORB + ENTRY + MOVEI B,0 + MOVE D,[XOR B,A] + JRST LOGFUN + +MFUNCTION %EQVB,SUBR,EQVB + ENTRY + HRREI B,-1 + MOVE D,[EQV B,A] + +LOGFUN: JUMPGE AB,ZROARG +LOGTYP: GETYP A,(AB) ;GRAB THE TYPE + PUSHJ P,SAT ;STORAGE ALLOCATION TYPE + CAIE A,S1WORD + JRST WRONGT ;WRONG TYPE...LOSE + MOVE A,1(AB) ;LOAD ARG INTO A + XCT D ;DO THE LOGICAL OPERATION + AOBJP AB,.+2 ;ADD ONE TO BOTH HALVES + AOBJN AB,LOGTYP ;ADD AGAIN AND LOOP IF NEEDED + +ZROARG: MOVE A,$TWORD + JRST FINIS + REPEAT 0,[ +;routine to sort lists or vectors of either fixed point or floating numbers +;the components are interchanged repeatedly to acheive the sort +;first arg: the structure to be sorted +;if no second arg sort in descending order +;second arg: if false then sort in ascending order +; else sort in descending order + +MFUNCTION SORT,SUBR + ENTRY + HLRZ A,AB + CAIGE A,-4 ;Only two arguments allowed + JRST TMA + MOVE O,DESCEND ;Set up "O" to test for descending order as default condition + CAIE A,-4 ;Optional second argument? + JRST .+4 + GETYP B,TYP2 ;See if it is other than false + CAIN B,TFALSE + MOVE O,ASCEND ;Set up "O" to test for ascending order + GETYP A,TYP1 ;CHECK TYPE OF FIRST ARGUMENT + CAIN A,TLIST + JRST LSORT + CAIN A,TVEC + JRST VSORT + JRST WTYP1 + + + + +GOBACK: MOVE A,TYP1 ;RETURN THE SORTED ARGUMENT AS VALUE + MOVE B,VAL1 + JRST FINIS + +DESCEND: CAMG C,(A)+1 +ASCEND: CAML C,(A)+1 + ;ROUTINE TO SORT LISTS IN NUMERICAL ORDER + +LSORT: MOVE A,VAL1 + JUMPE A,GOBACK ;EMPTY LIST? + HLRZ B,(A) ;TYPE OF FIRST COMPONENT + CAIE B,TFIX + CAIN B,TFLOAT + SKIPA + JRST WRONGT + MOVEI E,0 ;FOR COUNT OF LENGTH OF LIST +LCOUNT: JUMPE A,LLSORT ;REACHED END OF LIST? + MOVE A,(A) ;NEXT COMPONENT + TLZ A,(B) ;SAME TYPE AS FIRST COMPONENT? + TLNE A,-1 + JRST WRONGT + AOJA E,LCOUNT ;INCREMENT COUNT AND CONTINUE + +LLSORT: SOJE E,GOBACK ;FINISHED WITH SORTING? + HRRZ A,VAL1 ;START THIS LOOP OF SORTING AT THE BEGINNING + MOVEM E,(P)+1 ;Save the iteration depth +CLSORT: HRRZ B,(A) ;NEXT COMPONENT + MOVE C,(B)+1 ;ITS VALUE + XCT O ;ARE THESE TWO COMPONENTS IN ORDER? + JRST .+4 + MOVE D,(A)+1 ;INTERCHANGE THEM + MOVEM D,(B)+1 + MOVEM C,(A)+1 + MOVE A,B ;MAKE THE COMPONENT IN "B" THE CURRENT ONE + SOJG E,CLSORT + MOVE E,(P)+1 ;Restore the iteration depth + JRST LLSORT + ;ROUTINE TO SORT VECTORS IN NUMERICAL ORDER + +VSORT: HLRE D,VAL1 ;GET COUNT FIELD OF VECTOR + IDIV D,[-2] ;LENGTH + JUMPE D,GOBACK ;EMPTY VECTOR? + MOVE E,D ;SAVE LENGTH IN "E" + HRRZ A,VAL1 ;POINTER TO VECTOR + MOVE B,(A) ;TYPE OF FIRST COMPONENT + CAME B,$TFIX + CAMN B,$TFLOAT + SKIPA + JRST WRONGT + SOJLE D,GOBACK ;IF ONLY ONE COMPONENT THEN FINISHED +VCOUNT: ADDI A,2 ;CHECK NEXT COMPONENT + CAME B,(A) ;SAME TYPE AS FIRST COMPONENT? + JRST WRONGT + SOJG D,VCOUNT ;CONTINUE WITH NEXT COMPONENT + +VVSORT: SOJE E,GOBACK ;FINISHED SORTING? + HRRZ A,VAL1 ;START THIS LOOP OF SORTING AT THE BEGINNING + MOVEM E,(P)+1 ;Save the iteration depth +CVSORT: MOVE C,(A)+3 ;VALUE OF NEXT COMPONENT + XCT O ;ARE THESE TWO COMPONENTS IN ORDER? + JRST .+4 + MOVE D,(A)+1 ;INTERCHANGE THEM + MOVEM D,(A)+3 + MOVEM C,(A)+1 + ADDI A,2 ;UPDATE THE CURRENT COMPONENT + SOJG E,CVSORT + MOVE E,(P)+1 ;Restore the iteration depth + JRST VVSORT +] + +MFUNCTION TIME,SUBR + ENTRY + PUSHJ P,CTIME + JRST FINIS + +IMPURE + +RHI: 267762113337 +RLOW: 155256071112 +PURE + + +END + TITLE ATOMHACKER FOR MUDDLE + +RELOCATABLE + +.INSRT MUDDLE > +.GLOBAL RLOOKU,CHMAK,OBLNT,ROOT,INTOBL,ERROBL,IFALSE +.GLOBAL .BLOCK,IDVAL,NXTDCL,CHRWRD,CSTACK,CSTAK,ILOOKC,IGVAL,BYTDOP +.GLOBAL ICONS,INCONS,IBLOCK,INSRTX,GCHACK,IMPURIFY +.GLOBAL CINSER,CIRMV,CLOOKU,CATOM,CIPNAM,MPOPJ,CSETG + +.VECT.==40000 ; BIT FOR GCHACK + +; FUNCTION TO GENERATE AN EMPTY OBLIST + +MFUNCTION MOBLIST,SUBR + + ENTRY + CAMGE AB,[-5,,0] ;CHECK NUMBER OF ARGS + JRST TMA + JUMPGE AB,MOBL2 ; NO ARGS + PUSH TP,(AB) + PUSH TP,1(AB) + PUSH TP,$TATOM + PUSH TP,IMQUOTE OBLIST + MCALL 2,GET ; CHECK IF IT EXISTS ALREADY + CAMN A,$TOBLS + JRST FINIS +MOBL2: MOVE A,OBLNT ;GET DEFAULT LENGTH + CAML AB,[-3,,0] ;IS LENGTH SUPPLIED + JRST MOBL1 ;NO, USE STANDARD LENGTH + GETYP C,2(AB) ;GET ARG TYPE + CAIE C,TFIX + JRST WTYP2 ;LOSE + MOVE A,3(AB) ;GET LENGTH +MOBL1: PUSH TP,$TFIX + PUSH TP,A + MCALL 1,UVECTOR ;GET A UNIFORM VECTOR + MOVSI C,TLIST+.VECT. ;IT IS OF TYPE LIST + HLRE D,B ;-LENGTH TO D + SUBM B,D ;D POINTS TO DOPE WORD + MOVEM C,(D) ;CLOBBER TYPE IN + MOVSI A,TOBLS + JUMPGE AB,FINIS ; IF NO ARGS, DONE + GETYP A,(AB) + CAIE A,TATOM + JRST WTYP1 + PUSH TP,$TOBLS + PUSH TP,B + PUSH TP,$TOBLS + PUSH TP,B + PUSH TP,$TATOM + PUSH TP,IMQUOTE OBLIST + PUSH TP,(AB) + PUSH TP,1(AB) + MCALL 3,PUT ; PUT THE NAME ON THE OBLIST + PUSH TP,(AB) + PUSH TP,1(AB) + PUSH TP,$TATOM + PUSH TP,IMQUOTE OBLIST + PUSH TP,(TB) + PUSH TP,1(TB) + MCALL 3,PUT ; PUT THE OBLIST ON THE NAME + + POP TP,B + POP TP,A + JRST FINIS + +MFUNCTION GROOT,SUBR,ROOT + ENTRY 0 + MOVE A,ROOT(TVP) + MOVE B,ROOT+1(TVP) + JRST FINIS + +MFUNCTION GINTS,SUBR,INTERRUPTS + ENTRY 0 + MOVE A,INTOBL(TVP) + MOVE B,INTOBL+1(TVP) + JRST FINIS + +MFUNCTION GERRS,SUBR,ERRORS + ENTRY 0 + MOVE A,ERROBL(TVP) + MOVE B,ERROBL+1(TVP) + JRST FINIS + + +COBLQ: SKIPN B,2(B) ; SKIP IF EXISTS + JRST IFLS + MOVSI A,TOBLS + JUMPL B,CPOPJ1 + ADDI B,(TVP) + MOVE B,(B) +CPOPJ1: AOS (P) + POPJ P, + +IFLS: MOVEI B,0 + MOVSI A,TFALSE + POPJ P, + +MFUNCTION OBLQ,SUBR,[OBLIST?] + + ENTRY 1 + GETYP A,(AB) + CAIE A,TATOM + JRST WTYP1 + MOVE B,1(AB) ; GET ATOM + PUSHJ P,COBLQ + JFCL + JRST FINIS + + ; FUNCTION TO FIND AN ATOM ON A GIVEN OBLIST WITH A GIVEN PNAME + +MFUNCTION LOOKUP,SUBR + + ENTRY 2 + PUSHJ P,ILOOKU ;CALL INTERNAL ROUTINE + JRST FINIS + +CLOOKU: SUBM M,(P) + PUSH TP,A + PUSH TP,B + MOVEI B,-1(TP) + PUSH TP,$TOBLS + PUSH TP,C + GETYP A,A + PUSHJ P,CSTAK + MOVE B,(TP) + PUSHJ P,ILOOK + POP P,D + HRLI D,(D) + SUB P,D + SKIPE B + SOS (P) + SUB TP,[4,,4] + JRST MPOPJ + +ILOOKU: PUSHJ P,ARGCHK ;CHECK ARGS + PUSHJ P,CSTACK ;PUT CHARACTERS ON THE STACK + +CALLIT: MOVE B,3(AB) ;GET OBLIST +ILOOKC: PUSHJ P,ILOOK ;LOOK IT UP + POP P,D ;RESTORE COUNT + HRLI D,(D) ;TO BOTH SIDES + SUB P,D + POPJ P, + +;THIS ROUTINE CHECKS ARG TYPES + +ARGCHK: GETYP A,(AB) ;GET TYPES + GETYP C,2(AB) + CAIE A,TCHRS ;IS IT EITHER CHAR STRING + CAIN A,TCHSTR + CAIE C,TOBLS ;IS 2ND AN OBLIST + JRST WRONGT ;TYPES ARE WRONG + POPJ P, + +;THIS SUBROUTINE PUTS CHARACTERS ON THE STACK (P WILL BE CHANGED) + + +CSTACK: MOVEI B,(AB) +CSTAK: POP P,D ;RETURN ADDRESS TO D + CAIE A,TCHRS ;IMMEDIATE? + JRST NOTIMM ;NO, HAIR + MOVE A,1(B) ; GET CHAR + LSH A,29. ; POSITION + PUSH P,A ;ONTO P + PUSH P,[1] ;WITH NUMBER + JRST (D) ;GO CALL SEARCHER + +NOTIMM: MOVEI A,1 ; CLEAR CHAR COUNT + HRRZ C,(B) ; GET COUNT OF CHARS + JUMPE C,NULST ; FLUSH NULL STRING + MOVE B,1(B) ;GET BYTE POINTER + +CLOOP1: PUSH P,[0] ; STORE CHARS ON STACK + MOVSI E,(<440700,,(P)>) ; SETUP BYTE POINTER +CLOOP: ILDB 0,B ;GET A CHARACTER + IDPB 0,E ;STORE IT + SOJE C,CDONE ; ANY MORE? + TLNE E,760000 ; WORD FULL + JRST CLOOP ;NO CONTINUE + AOJA A,CLOOP1 ;AND CONTINUE + +CDONE: +CDONE1: PUSH P,A ;AND NUMBER OF WORDS + JRST (D) ;RETURN + + +NULST: PUSH TP,$TATOM + PUSH TP,EQUOTE NULL-STRING + JRST CALER1 + ; THIS FUNCTION LOOKS FOR ATOMS. CALLED BY PUSHJ P,ILOOK +; B/ OBLIST POINTER +; -1(P)/ LENGTH IN WORDS OF CHARACTER BLOCK +; CHAR STRING IS ON THE STACK + +ILOOK: MOVN A,-1(P) ;GET -LENGTH + HRLI A,-1(A) ;<-LENGTH-1>,,-LENGTH + PUSH TP,$TFIX ;SAVE + PUSH TP,A + ADDI A,-1(P) ;HAVE AOBJN POINTER TO CHARS + MOVEI D,0 ;HASH WORD + XOR D,(A) + AOBJN A,.-1 ;XOR THEM ALL TOGETHER + HLRE A,B ;GET LENGTH OF OBLIST + MOVNS A + TLZ D,400000 ; MAKE SURE + HASH CODE + IDIVI D,(A) ;DIVIDE + HRLI E,(E) ;TO BOTH HALVES + ADD B,E ;POINT TO BUCKET + + MOVEI 0,(B) ;IN CASE REMOVING 1ST + SKIPN C,(B) ;BUCKET EMPTY? + JRST NOTFND ;YES, GIVE UP +LOOK2: SKIPN A,1(C) ;NIL CAR ON LIST? + JRST NEXT ;YES TRY NEXT + ADD A,[3,,3] ;POINT TO ATOMS PNAME + MOVE D,(TP) ;GET PSEUDO AOBJN POINTER TO CHARS + ADDI D,-1(P) ;NOW ITS A REAL AOBJN POINTER + JUMPE D,CHECK0 ;ONE IS EMPTY +LOOK1: MOVE E,(D) ;GET A WORD + CAME E,(A) ;COMPARE + JRST NEXT ;THIS ONE DOESN'T MATCH + AOBJP D,CHECK ;ONE RAN OUT + AOBJN A,LOOK1 ;JUMP IF STILL MIGHT WIN + +NEXT: MOVEI 0,(C) ;POINT TO PREVIOUS ELEMENT + HRRZ C,(C) ;STEP THROUGH + JUMPN C,LOOK2 + +NOTFND: EXCH C,B ;RETURN BUCKET IN B + MOVSI A,TFALSE +CPOPJT: SUB TP,[2,,2] ;REMOVE RANDOM TP STUFF + POPJ P, + +CHECK0: JUMPN A,NEXT ;JUMP IF NOT ALSO EMPTY + SKIPA +CHECK: AOBJN A,NEXT ;JUMP IF NO MATCH + HLLZ A,(C) + MOVE E,B ; RETURN BUCKET + MOVE B,1(C) ;GET ATOM + JRST CPOPJT + + + ; FUNCTION TO INSERT AN ATOM ON AN OBLIST + +MFUNCTION INSERT,SUBR + + ENTRY 2 + GETYP A,2(AB) + CAIE A,TOBLS + JRST WTYP2 + MOVE A,(AB) + MOVE B,1(AB) + MOVE C,3(AB) + PUSHJ P,IINSRT + JRST FINIS + +CINSER: SUBM M,(P) + PUSHJ P,IINSRT + JRST MPOPJ + +IINSRT: PUSH TP,A + PUSH TP,B + PUSH TP,$TOBLS + PUSH TP,C + GETYP A,A + CAIN A,TATOM + JRST INSRT0 + +;INSERT WITH A GIVEN PNAME + + CAIE A,TCHRS + CAIN A,TCHSTR + JRST .+2 + JRST WTYP1 + + PUSH TP,$TFIX ;FLAG CALL + PUSH TP,[0] + MOVEI B,-5(TP) + PUSHJ P,CSTAK ;COPY ONTO STACK + MOVE B,-2(TP) + PUSHJ P,ILOOK ;LOOK IT UP (BUCKET RETURNS IN C) + JUMPN B,ALRDY ;EXISTS, LOSE + MOVE D,-2(TP) ; GET OBLIST BACK +INSRT1: PUSH TP,$TOBLS ;SAVE BUCKET POINTER + PUSH TP,C + PUSH TP,$TOBLS + PUSH TP,D ; SAVE OBLIST +INSRT3: PUSHJ P,IATOM ; MAKE AN ATOM + PUSHJ P,LINKCK ; A LINK REALLY NEEDED ? + MOVE E,-2(TP) + HRRZ E,(E) ; GET BUCKET + PUSHJ P,ICONS + MOVE C,-2(TP) ;BUCKET AGAIN + HRRM B,(C) ;INTO NEW BUCKET + MOVSI A,TATOM + MOVE B,1(B) ;GET ATOM BACK + MOVE D,(TP) ; GET OBLIST + MOVEM D,2(B) ; AND CLOBBER + MOVE C,-4(TP) ;GET FLAG + SUB TP,[6,,6] ;POP STACK + JUMPN C,(C) + SUB TP,[4,,4] + POPJ P, + +;INSERT WITH GIVEN ATOM +INSRT0: MOVE A,-2(TP) ;GOBBLE PNAME + SKIPE 2(A) ; SKIP IF NOT ON AN OBLIST + JRST ONOBL + ADD A,[3,,3] + HLRE C,A + MOVNS C + PUSH P,(A) ;FLUSH PNAME ONTO P STACK + AOBJN A,.-1 + PUSH P,C + MOVE B,(TP) ; GET OBLIST FOR LOOKUP + PUSHJ P,ILOOK ;ALREADY THERE? + JUMPN B,ALRDY + PUSH TP,$TOBLS ;SAVE NECESSARY STUFF AWAY FROM CONS + PUSH TP,C ;WHICH WILL MAKE A LIST FROM THE ATOM + MOVSI C,TATOM + MOVE D,-4(TP) + PUSHJ P,INCONS + MOVE C,(TP) ;RESTORE + HRRZ D,(C) + HRRM B,(C) + HRRM D,(B) + MOVE C,-2(TP) + MOVE B,-4(TP) ; GET BACK ATOM + MOVEM C,2(B) ; CLOBBER OBLIST IN + MOVSI A,TATOM + SUB TP,[6,,6] + POP P,C + HRLI C,(C) + SUB P,C + POPJ P, + +LINKCK: HRRZ C,FSAV(TB) ;CALLER'S NAME + CAIN C,LINK + SKIPA C,$TLINK ;LET US INSERT A LINK INSTEAD OF AN ATOM + MOVSI C,TATOM ;GET REAL ATOM FOR CALL TO ICONS + MOVE D,B + POPJ P, + + + +ALRDY: PUSH TP,$TATOM + PUSH TP,EQUOTE ATOM-ALREADY-THERE + JRST CALER1 + +ONOBL: PUSH TP,$TATOM + PUSH TP,EQUOTE ON-AN-OBLIST-ALREADY + JRST CALER1 + +; INTERNAL INSERT CALL + +INSRTX: POP P,0 ; GET RET ADDR + PUSH TP,$TFIX + PUSH TP,0 + PUSH TP,$TOBLS + PUSH TP,B + PUSH TP,$TOBLS + PUSH TP,B + PUSHJ P,ILOOK + JUMPN B,INSRXT + MOVEM C,-2(TP) + JRST INSRT3 ; INTO INSERT CODE + +INSRXT: PUSH P,-4(TP) + SUB TP,[6,,6] + POPJ P, + JRST IATM1 + +; FUNCTION TO REMOVE AN ATOM FROM AN OBLIST + +MFUNCTION REMOVE,SUBR + + ENTRY + + JUMPGE AB,TFA + CAMGE AB,[-5,,] + JRST TMA + MOVEI C,0 + CAML AB,[-3,,] ; SKIP IF OBLIST GIVEN + JRST .+5 + GETYP 0,2(AB) + CAIE 0,TOBLS + JRST WTYP2 + MOVE C,3(AB) + MOVE A,(AB) + MOVE B,1(AB) + PUSHJ P,IRMV + JRST FINIS + +CIRMV: SUBM M,(P) + PUSHJ P,IRMV + JRST MPOPJ + +IRMV: PUSH TP,A + PUSH TP,B + PUSH TP,$TOBLS + PUSH TP,C +IRMV1: GETYP 0,A ; CHECK 1ST ARG + CAIN 0,TLINK + JRST .+3 + CAIE 0,TATOM ; ATOM, TREAT ACCORDINGLY + JRST RMV1 + + SKIPN D,2(B) ; SKIP IF ON OBLIST AND GET SAME + JRST IFALSE + JUMPL D,.+3 + ADDI D,(TVP) + MOVE D,(D) + JUMPE C,GOTOBL + CAME C,D ; BETTER BE THE SAME + JRST ONOTH + +GOTOBL: ADD B,[3,,3] ; POINT TO PNAME + HLRE A,B + MOVNS A + PUSH P,(B) ; PUSH PNAME + AOBJN B,.-1 + PUSH P,A + MOVEM D,(TP) ; SAVE OBLIST + JRST RMV3 + +RMV1: JUMPE C,TFA + CAIE 0,TCHRS + CAIN 0,TCHSTR + SKIPA A,0 + JRST WTYP1 + MOVEI B,-3(TP) + PUSHJ P,CSTAK +RMV3: MOVE B,(TP) + PUSHJ P,ILOOK + POP P,D + HRLI D,(D) + SUB P,D + JUMPE B,RMVDON + HRRZ D,0 ;PREPARE TO SPLICE (0 POINTS PRIOR TO LOSING PAIR) + HRRZ C,(C) ;GET NEXT OF LOSING PAIR + MOVEI 0,(B) + CAIGE 0,HIBOT ; SKIP IF PURE + JRST RMV2 + PUSHJ P,IMPURIFY + MOVE A,-3(TP) + MOVE B,-2(TP) + MOVE C,(TP) + JRST IRMV1 +RMV2: HRRM C,(D) ;AND SPLICE + SETZM 2(B) ; CLOBBER OBLIST SLOT +RMVDON: SUB TP,[4,,4] + POPJ P, + + +;INTERNAL CALL FROM THE READER + +RLOOKU: PUSH TP,$TFIX ;PUSH A FLAG + POP P,C ;POP OFF RET ADR + PUSH TP,C ;AND USE AS A FLAG FOR INTERNAL + MOVE C,(P) ; CHANGE CHAR COUNT TO WORD + ADDI C,4 + IDIVI C,5 + MOVEM C,(P) + + CAMN A,$TOBLS ;IS IT ONE OBLIST? + JRST RLOOK1 + CAME A,$TLIST ;IS IT A LIST + JRST BADOBL + + JUMPE B,BADLST + PUSH TP,$TOBLS ; SLOT FOR REMEBERIG + PUSH TP,[0] + PUSH TP,$TOBLS + PUSH TP,[0] + PUSH TP,A + PUSH TP,B + +RLOOK2: GETYP A,(B) ;CHECK THIS IS AN OBLIST + MOVE B,1(B) ;VALUE + CAIE A,TOBLS + JRST DEFALT + PUSHJ P,ILOOK ;LOOK IT UP + JUMPN B,RLOOK3 ;WIN + SKIPE -2(TP) ; SKIP IF DEFAULT NOT STORED + JRST RLOOK4 + HRRZ D,(TP) ; GET CURRENT + MOVE D,1(D) ; OBLIST + MOVEM D,-2(TP) + MOVEM C,-4(TP) ; FOR INSERT IF NEEDED +RLOOK4: INTGO + HRRZ B,@(TP) ;CDR THE LIST + HRRZM B,(TP) + JUMPN B,RLOOK2 + SKIPN D,-2(TP) ; RESTORE FOR INSERT + JRST BADDEF ; NO DEFAULT, USER LOST ON SPECIFICATION + MOVE C,-4(TP) + SUB TP,[6,,6] ; FLUSH CRAP + JRST INSRT1 + +DEFFLG==1 ;SPECIAL FLAG USED TO INDICATE THAT A DEFAULT HAS ALREADY BEEN SPECIFIED +DEFALT: CAIN A,TATOM ;SPECIAL DEFAULT INDICATING ATOM ? + CAME B,MQUOTE DEFAULT + JRST BADDEF ;NO, LOSE + MOVSI A,DEFFLG + XORB A,-6(TP) ;SET AND TEST FLAG + TLNN A,DEFFLG ; HAVE WE BEEN HERE BEFORE ? + JRST BADDEF ; YES, LOSE + SETZM -2(TP) ;ZERO OUT PREVIOUS DEFAULT + SETZM -4(TP) + JRST RLOOK4 ;CONTINUE + +RLOOK1: PUSH TP,$TOBLS + PUSH TP,B ; SAVE OBLIST + PUSHJ P,ILOOK ;LOOK IT UP THERE + MOVE D,(TP) ; GET OBLIST + SUB TP,[2,,2] + JUMPE B,INSRT1 ;GO INSET IT + + +INSRT2: JRST .+2 ; +RLOOK3: SUB TP,[6,,6] ;POP OFF LOSSAGE + PUSHJ P,ILINK ;IF THIS IS A LINK FOLLOW IT + PUSH P,(TP) ;GET BACK RET ADR + SUB TP,[2,,2] ;POP TP + JRST IATM1 ;AND RETURN + + +BADOBL: PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-OBLIST-OR-LIST-THEREOF + JRST CALER1 + +BADDEF: PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-DEFAULT-OBLIST-SPECIFICATION + JRST CALER1 + +ONOTH: PUSH TP,$TATOM + PUSH TP,EQUOTE ATOM-ON-DIFFERENT-OBLIST + JRST CALER1 + ;SUBROUTINE TO MAKE AN ATOM + +MFUNCTION ATOM,SUBR + + ENTRY 1 + + MOVE A,(AB) + MOVE B,1(AB) + PUSHJ P,IATOMI + JRST FINIS + +CATOM: SUBM M,(P) + PUSHJ P,IATOMI + JRST MPOPJ + +IATOMI: GETYP 0,A ;CHECK ARG TYPE + CAIE 0,TCHRS + CAIN 0,TCHSTR + JRST .+2 ;JUMP IF WINNERS + JRST WTYP1 + + PUSH TP,A + PUSH TP,B + MOVEI B,-1(TP) + MOVE A,0 + PUSHJ P,CSTAK ;COPY ONTO STACK + PUSHJ P,IATOM ;NOW MAKE THE ATOM + POPJ P, + +;INTERNAL ATOM MAKER + +IATOM: MOVE A,-1(P) ;GET WORDS IN PNAME + ADDI A,3 ;FOR VALUE CELL + PUSHJ P,IBLOCK ; GET BLOCK + MOVSI C,<(GENERAL)>+SATOM+.VECT. ;FOR TYPE FIELD + MOVE D,-1(P) ;RE-GOBBLE LENGTH + ADDI D,3(B) ;POINT TO DOPE WORD + MOVEM C,(D) + SKIPG -1(P) ;EMPTY PNAME ? + JRST IATM0 ;YES, NO CHARACTERS TO MOVE + MOVE E,B ;COPY ATOM POINTER + ADD E,[3,,3] ;POINT TO PNAME AREA + MOVEI C,-1(P) + SUB C,-1(P) ;POINT TO STRING ON STACK + MOVE D,(C) ;GET SOME CHARS + MOVEM D,(E) ;AND COPY THEM + ADDI C,1 + AOBJN E,.-3 +IATM0: MOVSI A,TATOM ;TYPE TO ATOM +IATM1: POP P,D ;RETURN ADR + POP P,C + HRLI C,(C) + SUB P,C + JRST (D) ;RETURN + + ;SUBROUTINE TO GET AN ATOM'S PNAME + +MFUNCTION PNAME,SUBR + + ENTRY 1 + + GETYP A,(AB) + CAIE A,TATOM ;CHECK TYPE IS ATOM + JRST WTYP1 + MOVE A,1(AB) + PUSHJ P,IPNAME + JRST FINIS + +CIPNAM: SUBM M,(P) + PUSHJ P,IPNAME + JRST MPOPJ + +IPNAME: ADD A,[3,,3] + HLRE B,A + MOVM B,B + PUSH P,(A) ;FLUSH PNAME ONTO P + AOBJN A,.-1 + IMULI B,5 ; CHARS TO B + MOVE 0,(P) ; LAST WORD + MOVE A,0 + SUBI A,1 ; FIND LAST 1 + ANDCM 0,A ; 0 HAS 1ST 1 + JFFO 0,.+1 + HRREI 0,-34.(A) ; FIND HOW MUCH TO ADD + IDIVI 0,7 + ADD B,0 + PUSH P,B + PUSHJ P,CHMAK ;MAKE A STRING + POPJ P, + + ; BLOCK STRUCTURE SUBROUTINES FOR MUDDLE + +MFUNCTION BLK,SUBR,BLOCK + + ENTRY 1 + + GETYP A,(AB) ;CHECK TYPE OF ARG + CAIE A,TOBLS ;IS IT AN OBLIST + CAIN A,TLIST ;OR A LIAT + JRST .+2 + JRST WTYP1 + MOVSI A,TATOM ;LOOK UP OBLIST + MOVE B,IMQUOTE OBLIST + PUSHJ P,IDVAL ;GET VALUE + PUSH TP,A + PUSH TP,B + PUSH TP,.BLOCK(PVP) ;HACK THE LIST + PUSH TP,.BLOCK+1(PVP) + MCALL 2,CONS ;CONS THE LIST + MOVEM A,.BLOCK(PVP) ;STORE IT BACK + MOVEM B,.BLOCK+1(PVP) + PUSH TP,$TATOM + PUSH TP,IMQUOTE OBLIST + PUSH TP,(AB) + PUSH TP,1(AB) + MCALL 2,SET ;SET OBLIST TO ARG + JRST FINIS + +MFUNCTION ENDBLOCK,SUBR + + ENTRY 0 + + SKIPN B,.BLOCK+1(PVP) ;IS THE LIST NIL? + JRST BLKERR ;YES, LOSE + HRRZ C,(B) ;CDR THE LIST + HRRZM C,.BLOCK+1(PVP) + PUSH TP,$TATOM ;NOW RESET OBLIST + PUSH TP,IMQUOTE OBLIST + HLLZ A,(B) ;PUSH THE TYPE OF THE CAR + PUSH TP,A + PUSH TP,1(B) ;AND VALUE OF CAR + MCALL 2,SET + JRST FINIS + +BLKERR: PUSH TP,$TATOM + PUSH TP,EQUOTE UNMATCHED + JRST CALER1 + +BADLST: PUSH TP,$TATOM + PUSH TP,EQUOTE NIL-LIST-OF-OBLISTS + JRST CALER1 + ;SUBROUTINE TO CREATE CHARACTER STRING GOODIE + +CHMAK: MOVE A,-1(P) + ADDI A,4 + IDIVI A,5 + PUSHJ P,IBLOCK + MOVEI C,-1(P) ;FIND START OF CHARS + HLRE E,B ; - LENGTH + ADD C,E ;C POINTS TO START + MOVE D,B ;COPY VECTOR RESULT + JUMPGE D,NULLST ;JUMP IF EMPTY + MOVE A,(C) ;GET ONE + MOVEM A,(D) + ADDI C,1 ;BUMP POINTER + AOBJN D,.-3 ;COPY +NULLST: MOVSI C,TCHRS+.VECT. ;GET TYPE + MOVEM C,(D) ;CLOBBER IT IN + MOVE A,-1(P) ; # WORDS + HRLI A,TCHSTR + HRLI B,440700 + MOVMM E,-1(P) ; SO IATM1 WORKS + JRST IATM1 ;RETURN + +; SUBROUTINE TO READ FIVE CHARS FROM STRING. +; TWO CALLS, ONE WITH A POINTING TO LIST ELEMENT, +; THE OTHER WITH B POINTING TO PAIR. SKIPS IF WINNER, ELSE DOESNT + +NXTDCL: GETYP B,(A) ;CHECK TYPE + CAIE B,TDEFER ;LOSE IF NOT DEFERRED + POPJ P, + + MOVE B,1(A) ;GET REAL BYTE POINTER +CHRWRD: PUSH P,C + GETYP C,(B) ;CHECK IT IS CHSTR + CAIE C,TCHSTR + JRST CPOPJC ;NO, QUIT + PUSH P,D + PUSH P,E + PUSH P,0 + MOVEI E,0 ;INITIALIZE DESTINATION + HRRZ C,(B) ; GET CHAR COUNT + JUMPE C,GOTDCL ; NULL, FINISHED + MOVE B,1(B) ;GET BYTE POINTER + MOVE D,[440700,,E] ;BYTE POINT TO E +CHLOOP: ILDB 0,B ; GET A CHR + IDPB 0,D ;CLOBBER AWAY + SOJE C,GOTDCL ; JUMP IF DONE + TLNE D,760000 ; SKIP IF WORD FULL + JRST CHLOOP ; MORE THAN 5 CHARS + TRO E,1 ; TURN ON FLAG + +GOTDCL: MOVE B,E ;RESULT TO B + AOS -4(P) ;SKIP RETURN +CPOPJ0: POP P,0 + POP P,E + POP P,D +CPOPJC: POP P,C + POPJ P, + +; SUBROUTINE TO FIND A BYTE STRINGS DOPE WORD +; RECEIVES POINTER TO PAIR CONNTAINIGN CHSTR IN C, RETURNS DOPE WORD IN A + +BYTDOP: PUSH P,B ; SAVE SOME ACS + PUSH P,D + PUSH P,E + MOVE B,1(C) ; GET BYTE POINTER + LDB D,[360600,,B] ; POSITION TO D + LDB E,[300600,,B] ; AND BYTE SIZE + MOVEI A,(E) ; A COPY IN A + IDIVI D,(E) ; D=> # OF BYTES IN WORD 1 + HRRZ E,(C) ; GET LENGTH + SUBM E,D ; # OF BYTES IN OTHER WORDS + JUMPL D,BYTDO1 ; NEAR DOPE WORD + MOVEI B,36. ; COMPUTE BYTES PER WORD + IDIVM B,A + ADDI D,-1(A) ; NOW COMPUTE WORDS + IDIVI D,(A) ; D/ # NO. OF WORDS PAST 1ST + ADD D,1(C) ; D POINTS TO DOPE WORD + MOVEI A,2(D) + +BYTDO2: POP P,E + POP P,D + POP P,B + POPJ P, +BYTDO1: MOVEI A,1(B) + CAME D,[-5] + AOJA A,BYTDO2 + JRST BYTDO2 + ;ROUTINES TO DEFINE AND HANDLE LINKS + +MFUNCTION LINK,SUBR + ENTRY + CAML AB,[-6,,0] ;NO MORE THAN 3 ARGS + CAML AB,[-2,,0] ;NO LESS THAN 2 ARGS + JRST WNA + CAML AB,[-4,,0] ;ONLY TWO ARGS SUPPLIED ? + JRST GETOB ;YES, GET OBLIST FROM CURRENT PATH + MOVE A,2(AB) + MOVE B,3(AB) + MOVE C,5(AB) + JRST LINKIN +GETOB: MOVSI A,TATOM + MOVE B,IMQUOTE OBLIST + PUSHJ P,IDVAL + CAMN A,$TOBLS + JRST LINKP + CAME A,$TLIST + JRST BADOBL + JUMPE B,BADLST + GETYPF A,(B) + MOVE B,(B)+1 +LINKP: MOVE C,B + MOVE A,2(AB) + MOVE B,3(AB) +LINKIN: PUSHJ P,IINSRT + CAMN A,$TFALSE ;LINK NAME ALREADY USED ? + JRST ALRDY ;YES, LOSE + MOVE C,B + MOVE A,(AB) + MOVE B,1(AB) + PUSHJ P,CSETG + JRST FINIS + + +ILINK: CAME A,$TLINK ;FOUND A LINK ? + POPJ P, ;NO, FINISHED + MOVSI A,TATOM + PUSHJ P,IGVAL ;GET THE LINK'S DESTINATION + CAME A,$TUNBOUND ;WELL FORMED LINK ? + POPJ P, ;YES + PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-LINK + JRST CALER1 + + +; THIS SUBROUTINE IMPURIFIES A PURE ATOM TO ALLOW MODIFICATION OF SYSTEM SUBRS + +IMPURIFY: + PUSH TP,$TATOM + PUSH TP,B + MOVE C,B + MOVEI 0,(C) + CAIGE 0,HIBOT + JRST RTNATM ; NOT PURE, RETURN + +; 1) IMPURIFY ITS OBLIST BUCKET + + SKIPN B,2(C) ; PICKUP OBLIST IF IT EXISTS + JRST IMPUR1 ; NOT ON ONE, IGNORE THIS CODE + + ADDI B,(TVP) ; POINT TO SLOT + MOVE B,(B) ; GET THE REAL THING + ADD C,[3,,3] ; POINT TO PNAME + HLRE A,C ; GET LNTH IN WORDS OF PNAME + MOVNS A + PUSH P,[IMPUR2] ; FAKE OUT ILOOKC + PUSH P,(C) ; PUSH UP THE PNAME + AOBJN C,.-1 + PUSH P,A ; NOW THE COUNT + JRST ILOOKC ; GO FIND BUCKET + +IMPUR2: JUMPE B,IMPUR1 ; NOT THERE, GO + PUSH TP,$TOBLS ; SAVE BUCKET + PUSH TP,E + + MOVE B,(E) ; GET NEXT ONE +IMPUR4: MOVEI 0,(B) + CAIGE 0,HIBOT ; SKIP IF PURE + JRST IMPUR3 ; FOUND IMPURE NESS, SKIP IT + HLLZ C,(B) ; SET UP ICONS CALL + HRRZ E,(B) + MOVE D,1(B) + PUSHJ P,ICONS ; CONS IT UP + HRRZ E,(TP) ; RETRV PREV + HRRM B,(E) ; AND CLOBBER +IMPUR3: MOVSI 0,TLIST + MOVEM 0,-1(TP) ; FIX TYPE + HRRZM B,(TP) ; STORE GOODIE + HRRZ B,(B) ; CDR IT + JUMPN B,IMPUR4 ; LOOP + SUB TP,[2,,2] ; FLUSH TP CRUFT + +; 2) GENERATE A DUPLICATE ATOM + +IMPUR1: HLRE A,(TP) ; GET LNTH OF ATOM + MOVNS A + PUSH P,A + PUSHJ P,IBLOCK ; GET NEW BLOCK FOR ATOM + PUSH TP,$TATOM + PUSH TP,B + HRL B,-2(TP) ; SETUP BLT + POP P,A + ADDI A,(B) ; END OF BLT + BLT B,(A) ; CLOBBER NEW ATOM + MOVSI B,.VECT. ; TURN ON BIT FOR GCHACK + IORM B,(A) + +; 3) NOW COPY GLOBAL VALUE + + MOVE B,(TP) ; ATOM BACK + GETYP 0,(B) + SKIPE A,1(B) ; NON-ZER POINTER? + CAIN 0,TUNBOU ; BOUND? + JRST IMPUR5 ; NO, DONT COPY GLOB VAL + PUSH TP,$TATOM + PUSH TP,B + PUSH TP,(A) + PUSH TP,1(A) + SETZM (B) + SETZM 1(B) + MCALL 2,SETG +IMPUR5: PUSH TP,$TFIX ;SAVE OLD ATOM WITH FUNNY TYPE TO AVOID LOSSAGE + PUSH TP,-3(TP) + +; 4) UPDATE ALL POINTERS TO THIS ATOM + + MOVE A,[PUSHJ P,ATFIX] ; INS TO PASS TO GCHACK + PUSHJ P,GCHACK + SUB TP,[4,,4] + +RTNATM: POP TP,B + POP TP,A + POPJ P, + +; ROUTINE PASSED TO GCHACK + +ATFIX: CAIE C,TGATOM ; GLOBAL TYPE ATOM + CAIN C,TATOM + CAME D,(TP) ; SKIP IF WINNER + POPJ P, + MOVE D,-2(TP) + SKIPE B + MOVEM D,1(B) + POPJ P, + + +END + +TITLE PROCESS-HACKER FOR MUDDLE + +RELOCATABLE + +.INSRT MUDDLE > + +.GLOBAL ICR,NAPT,IGVAL,CHKARG,RESFUN,RETPROC,SWAP,MAINPR,PROCHK,NOTRES +.GLOBAL PSTAT,LSTRES,TOPLEV,MAINPR,1STEPR,INCONS +.GLOBAL TBINIT,APLQ + +MFUNCTION PROCESS,SUBR + + ENTRY 1 + GETYP A,(AB) ;GET TYPE OF ARG + ;MUST BE SOME APPLIABLE TYPE + PUSHJ P,APLQ + JRST NAPT ;NO, ERROR - NON-APPLIABLE TYPE +OKFUN: + + PUSHJ P,ICR ;CREATE A NEW PROCESS + MOVE C,TPSTO+1(B) ;GET ITS SRTACK + PUSH C,[TENTRY,,TOPLEV] + PUSH C,[1,,0] ;TIME + PUSH C,[0] + PUSH C,SPSTO+1(B) + PUSH C,PSTO+1(B) + MOVE D,C + ADD D,[3,,3] + PUSH C,D ;SAVED STACK POINTER + PUSH C,[SUICID] + MOVEM C,TPSTO+1(B) ;STORE NEW TP + HRRI D,1(C) ;MAKE A TB + HRLI D,2 ;WITH A TIME + MOVEM D,TBINIT+1(B) + MOVEM D,TBSTO+1(B) ;SAVE ALSO FOR SIMULATED START + MOVE C,(AB) ;STORE ARG + MOVEM C,RESFUN(B) ;INTO PV + MOVE C,1(AB) + MOVEM C,RESFUN+1(B) + MOVEI 0,RUNABL + MOVEM 0,PSTAT+1(B) + JRST FINIS + +REPEAT 0,[ +MFUNCTION RETPROC,SUBR +; WHO KNOWS WHAT THIS SHOULD REALLY DO +;PROBABLY, JUST AN EXIT +;FOR NOW, PRINT OUT AN ERROR MESSAGE + PUSH TP,$TATOM + PUSH TP,EQUOTE ATTEMPT-TO-RETURN-OUT-OF-PROCESS + JRST CALER1 + + + + + + + +MFUNCTION RESUME,FSUBR +;RESUME IS CALLED WITH TWO ARGS +;THE FIRST IS A PROCESS FORM OF THE PROCESS TO BE RESUMED +;THE SECOND IS A FUNCTION TO BE CALLED WHEN THIS PROCESS +; (THE PARENT) IS ITSELF RESUMED +;IF THE FUNCTION IS NOT GIVEN SOME STANDARD FUNCTION IS +;PLUGGED IN +; +; NOTE - TYPE AND NUMBER OF ARGS CHECKS MUST BE ADDED TO BOTH RESUME AND CREATE + + ENTRY 1 + HRRZ C,@1(AB) ;GET CDR ADDRESS + JUMPE C,NOFUN ;IF NO SECOND ARG, SUPPLY STANDARD + HLLZ A,(C) ;GET CDR TYPE + CAME A,$TATOM ;ATOMIC? + JRST RES2 ;NO, MUST EVAL TO GET FUNCTION + MOVE B,1(C) ;YES + PUSHJ P,IGVAL ;TRY TO GET GLOBAL VALUE + CAMN A,$TUNBOUND ;GLOBALLY UNBOUND? + JRST LFUN ;YES, TRY FOR LOCAL VALUE +RES1: MOVEM A,RESFUN(PVP) ;STORE IN THIS PROCESS + MOVEM B,RESFUN+1(PVP) + + HRRZ C,1(AB) ;GET CAR ADDRESS + PUSH TP,(C) ;PUSH PROCESS FORM + PUSH TP,1(C) + JSP E,CHKARG ;CHECK FOR DEFERED TYPE + ;INSERT CHECKS FOR PROCESS FORM + MCALL 1,EVAL ;EVAL PROCESS FORM WHICH WILL SWITCH + ; PROCESSES + JRST FINIS + +RES2: PUSH TP,(C) ;PUSH FUNCTION ARG + PUSH TP,1(C) + JSP E,CHKARG ;CHECK FOR DEFERED + MCALL 1,EVAL ;EVAL TO GET FUNCTION + JRST RES1 + +LFUN: HRRZ C,1(AB) ;GET CDR ADDRESS + PUSH TP,(C) + PUSH TP,1(C) + MCALL 1,VALUE ;GET LOCAL VALUE OF ATOM FOR FUNCTION + JRST RES1 + +NOFUN: MOVSI A,TUNBOUND ;MAKE RESUME FUNCTION UNBOUND + JRST RES1 +] + +; PROCHK - SETUP LAST RESUMER SLOT + +PROCHK: CAME B,MAINPR ; MAIN PROCESS? + MOVEM PVP,LSTRES+1(B) + POPJ P, + +; THIS FUNCTION RESUMES A PROCESS, CALLED WITH ONE OR TWO ARGS +; THE FIRST IS A VALUE TO RETURN TO THE OTHER PROCESS OR PASS TO ITS +; RESFUN +; THE SECOND IS THE PROCESS TO RESUME (IF NOT SUPPLIED, USE THE LSTRES) + + +MFUNCTION RESUME,SUBR + + ENTRY + JUMPGE AB,TFA + CAMGE AB,[-4,,0] + JRST TMA + CAMGE AB,[-2,,0] + JRST CHPROC ; VALIDITY CHECK ON PROC + SKIPN B,LSTRES+1(PVP) ; ANY RESUMERS? + JRST NORES ; NO, COMPLAIN +GOTPRO: MOVE C,AB + CAMN B,PVP ; DO THEY DIFFER? + JRST RETARG + MOVE A,PSTAT+1(B) ; CHECK STATE + CAIE A,RUNABL ; MUST BE RUNABL + CAIN A,RESMBL ; OR RESUMABLE + JRST RESUM1 +NOTRES: +NOTRUN: PUSH TP,$TATOM + PUSH TP,EQUOTE PROCESS-NOT-RUNABLE-OR-RESUMABLE + JRST CALER1 + +RESUM1: PUSHJ P,PROCHK ; FIX LISTS UP + MOVEI A,RESMBL ; GET NEW STATE + MOVE D,B ; FOR SWAP +STRTN: JSP C,SWAP ; SWAP THEM + MOVEM A,PSTAT+1(E) ; CLOBBER OTHER STATE + MOVE A,PSTAT+1(PVP) ; DECIDE HOW TO PROCEED + MOVEI 0,RUNING + MOVEM 0,PSTAT+1(PVP) ; NEW STATE + MOVE C,ABSTO+1(E) ; OLD ARGS + CAIE A,RESMBL + JRST DORUN ; THEY DO RUN RUN, THEY DO RUN RUN +RETARG: MOVE A,(C) + MOVE B,1(C) ; RETURN + JRST FINIS + +DORUN: PUSH TP,RESFUN(PVP) + PUSH TP,RESFUN+1(PVP) + PUSH TP,(C) + PUSH TP,1(C) + MCALL 2,APPLY + PUSH TP,A ; CALL SUICIDE WITH THESE ARGS + PUSH TP,B + MCALL 1,SUICID ; IF IT RETURNS, KILL IT + JRST FINIS + +CHPROC: GETYP A,2(AB) + CAIE A,TPVP + JRST WTYP2 + MOVE B,3(AB) + JRST GOTPRO + +NORES: PUSH TP,$TATOM + PUSH TP,EQUOTE NO-PROCESS-TO-RESUME + JRST CALER1 + +; FUNCTION TO CAUSE PROCESSES TO SELF DESTRUCT + +MFUNCTION SUICIDE,SUBR + + ENTRY + + JUMPGE AB,TFA + HLRE A,AB + ASH A,-1 ; DIV BY 2 + AOJE A,NOPROC ; NO PROCESS GIVEN + AOJL A,TMA + GETYP A,2(AB) ; MAKE SURE OF PROCESS + CAIE A,TPVP + JRST WTYP2 + MOVE C,3(AB) + JRST SUIC2 + +NOPROC: SKIPN C,LSTRES+1(PVP) ; MAKE SURE OF EDLIST + MOVE C,MAINPR ; IF NOT DEFAULT TO MAIN +SUIC2: CAMN C,PVP ; DONT SUICIDE TO SELF + JRST SUSELF + MOVE B,PSTAT+1(C) + CAIE B,RUNABL + CAIN B,RESMBL + JRST .+2 + JRST NOTRUN + MOVE B,C + PUSHJ P,PROCHK + MOVE D,B ; RESTORE NEWPROCESS + MOVEI A,DEAD + JRST STRTN + +SUSELF: PUSH TP,$TATOM + PUSH TP,EQUOTE ATTEMPT-TO-SUICIDE-TO-SELF + JRST CALER1 + + +MFUNCTION RESER,SUBR,RESUMER + + ENTRY + MOVE B,PVP + JUMPGE AB,GTLAST + CAMGE AB,[-2,,0] + JRST TMA + + GETYP A,(AB) ; CHECK FOR PROCESS + CAIE A,TPVP + JRST WTYP1 + MOVE B,1(AB) ; GET PROCESS +GTLAST: MOVSI A,TFALSE ; ASSUME NONE + SKIPN B,LSTRES+1(B) ; GET IT IF IT EXISTS + JRST FINIS + MOVSI A,TPVP ; GET TYPE + JRST FINIS + +; FUNCTION TO PUT AN EVAL CALL ON ANOTHER PROCESSES STACK + +MFUNCTION BREAKSEQ,SUBR,BREAK-SEQ + + ENTRY 2 + + GETYP A,2(AB) ; 2D ARG MUST BE PROCESS + CAIE A,TPVP + JRST WTYP2 + + MOVE B,3(AB) ; GET PROCESS + CAMN B,PVP ; SKIP IF NOT ME + JRST BREAKM + MOVE A,PSTAT+1(B) ; CHECK STATE + CAIE A,RESMBL ; BEST BE RESUMEABLE + JRST NOTRUN + MOVE C,TBSTO+1(B) ; GET SAVE ACS TO BUILD UP A DUMMY FRAME + MOVE D,TPSTO+1(B) ; STACK POINTER + MOVE E,SPSTO+1(B) ; FIX UP OLD FRAME + MOVEM E,SPSAV(C) + MOVEI E,CALLEV ; FUNNY PC + MOVEM E,PCSAV(C) + MOVE E,PSTO+1(B) ; SET UP P,PP AND TP SAVES + MOVEM E,PSAV(C) + PUSH D,[0] ; ALLOCATES SOME SLOTS + PUSH D,[0] + PUSH D,(AB) ; NOW THAT WHIC IS TO BE EVALLED + PUSH D,1(AB) + MOVEM D,TPSAV(C) + HRRI E,-1(D) ; BUILD UP ARG POINTER + HRLI E,-2 + PUSH D,[TENTRY,,BREAKE] + PUSH D,C ; OLD TB + PUSH D,E ; NEW ARG POINTER +REPEAT 4,PUSH D,[0] ; OTHER SLOTS + MOVEM D,TPSTO+1(B) + MOVEI C,(D) ; BUILD NEW AB + AOBJN C,.+1 + MOVEM C,TBSTO+1(B) ; STORE IT + MOVE A,2(AB) ; RETURN PROCESS + MOVE B,3(AB) + JRST FINIS + +MQUOTE BREAKER + +BREAKE: +CALLEV: MOVEM A,-3(TP) ; HERE TO EVAL THE GOODIE (SAVE REAL RESULT) + MOVEM B,-2(TP) + MCALL 1,EVAL + POP TP,B + POP TP,A + JRST FINIS + +BREAKM: PUSH TP,$TATOM + PUSH TP,EQUOTE ATTEMPT-TO-BREAK-OWN-SEQUENCE + JRST CALER1 + +; FUNCTION TOP PUT PROCESS IN 1 STEP MODE + +MFUNCTION 1STEP,SUBR + PUSHJ P,1PROC + MOVEM PVP,1STEPR+1(B) ; CLOBBER TARGET PROCESS + JRST FINIS + +; FUNCTION TO UNDO ABOVE + +MFUNCTION %%FREE,SUBR,FREE-RUN + PUSHJ P,1PROC + CAME PVP,1STEPR+1(B) + JRST FNDBND + SETZM 1STEPR+1(B) + JRST FINIS + +FNDBND: SKIPE 1STEPR+1(B) ; DOES IT HAVE ANY 1STEPPER? + JRST NOTMIN ; YES, COMPLAIN + MOVE D,B ; COPY PROCESS + ADD D,[1STEPR,,1STEPR] ; POINTER FOR SEARCH + HRRZ C,SPSTO+1(B) ; GET THIS BINDING STACK + +FNDLP: GETYP 0,(C) ; IS THIS A TBVL? + CAIN 0,TBVL + CAME D,1(C) ; SKIP IF THIS IS SAVED 1STEP SLOT + JRST FNDNXT + SKIPN 3(C) ; IS IT SAVING A REAL 1STEPPER? + JRST FNDNXT + CAME PVP,3(C) ; IS IT ME? + JRST NOTMIN + SETZM 3(C) ; CLEAR OUT SAVED 1STEPPER + JRST FINIS +FNDNXT: HRRZ C,(C) ; NEXT BINDING + JUMPN C,FNDLP + +NOTMIN: MOVE C,$TCHSTR + MOVE D,CHQUOTE NOT-YOUR-1STEPEE + PUSHJ P,INCONS + MOVSI A,TFALSE + JRST FINIS + +1PROC: ENTRY 1 + GETYP A,(AB) + CAIE A,TPVP + JRST WTYP1 + MOVE B,1(AB) + MOVE A,(AB) + POPJ P, + +; FUNCTION TO RETRUN THE MAIN PROCESS + +MFUNCTION MAIN%%,SUBR,MAIN + ENTRY 0 + + MOVE B,MAINPR +MAIN1: MOVSI A,TPVP + JRST FINIS + +; FUNCTION TO RETURN THE CURRENT PROCESS + +MFUNCTION ME,SUBR + ENTRY 0 + + MOVE B,PVP + JRST MAIN1 + +; FUNCTION TO RETURN THE STATE OF A PROCESS + +MFUNCTION STATE,SUBR + ENTRY 1 + GETYP A,(AB) + CAIE A,TPVP + JRST WTYP1 + MOVE A,1(AB) ; GET PROCESS + MOVE A,PSTAT+1(A) + MOVE B,@STATES(A) ; GET STATE + MOVSI A,TATOM + JRST FINIS + +STATES: + IRP A,,[ILLEGAL,RUNABLE,RESUMABLE,RUNNING,DEAD,BLOCKED] + MQUOTE A + TERMIN + + + +END + +TITLE DECLARATION PROCESSOR + +RELOCA + +.INSRT MUDDLE > + +.GLOBAL STBL,TYPFND,TYPSGR,CHKDCL,TESTR,VALG,INCR1,TYPG,ISTRUC,TMATCH,SAT +.GLOBAL TYPMIS,CHKAB,CHKARG,IGDECL,LOCQQ,APLQ,CALER,IEQUAL,IIGLOC,IGLOC +.GLOBAL CHLOCI,INCONS,SPCCHK,WTYP1 + +; Subr to allow user to access the DECL checking code + +MFUNCTION CHECKD,SUBR,[DECL?] + + ENTRY 2 + + MOVE C,(AB) + MOVE D,1(AB) + MOVE A,2(AB) + MOVE B,3(AB) + PUSHJ P,TMATCX ; CHECK THEM + JRST IFALS + +RETT: MOVSI A,TATOM + MOVE B,MQUOTE T + JRST FINIS + +RETF: +IFALS: MOVEI B,0 + MOVSI A,TFALSE + JRST FINIS + +; Subr to turn DECL checking on and off. + +MFUNCTION %DECL,SUBR,[DECL-CHECK] + + ENTRY 1 + + GETYP 0,(AB) + SETZM IGDECL + CAIN 0,TFALSE + SETOM IGDECL + MOVE A,(AB) + MOVE B,1(AB) + JRST FINIS + +; Change special unspecial normal mode + +MFUNCTION SPECM%,SUBR,[SPECIAL-MODE] + + ENTRY + + CAMGE AB,[-3,,] + JRST TMA + MOVE C,SPCCHK ; GET CURRENT + JUMPGE AB,MODER ; RET CURRENT + GETYP 0,(AB) ; CHECK IT IS ATOM + CAIE 0,TATOM + JRST WTYP1 + MOVE 0,1(AB) + MOVEI A,1 + CAMN 0,MQUOTE UNSPECIAL + MOVSI A,(SETZ) + CAMN 0,MQUOTE SPECIAL + MOVEI A,0 + JUMPG A,WTYP1 + HLLM A,SPCCHK + +MODER: MOVSI A,TATOM + MOVE B,MQUOTE SPECIAL + SKIPGE C + MOVE B,MQUOTE UNSPECIAL + JRST FINIS + +; Function to turn special checking on and of + +MFUNCTION SPECC%,SUBR,[SPECIAL-CHECK] + + ENTRY + CAMGE AB,[-3,,] + JRST TMA + + MOVE C,SPCCHK + JUMPGE AB,SCHEK1 + + MOVEI A,0 + GETYP 0,(AB) + CAIE 0,TFALSE + MOVEI A,1 + HRRM A,SPCCHK + +SCHEK1: TRNN C,1 + JRST IFALS + JRST RETT + +; Finction to set decls for GLOBAL values. + +MFUNCTION GDECL,FSUBR + + ENTRY 1 + + GETYP 0,(AB) + CAIE 0,TLIST + JRST WTYP1 + + PUSH TP,$TLIST + PUSH TP,1(AB) + PUSH TP,$TLIST + PUSH TP,[0] + PUSH TP,$TLIST + PUSH TP,[0] + +GDECL1: INTGO + SKIPN C,1(TB) + JRST RETT + HRRZ D,(C) ; MAKE SURE PAIRS + JUMPE D,GDECLL ; LOSER, GO AWAY + GETYP 0,(C) + CAIE 0,TLIST + JRST GDECLL + HRRZ 0,(D) + MOVEM 0,1(TB) ; READY FOR NEXT CALL + MOVE C,1(C) ; SAVE ATOM LIST + MOVEM C,5(TB) + MOVEM D,3(TB) + +GDECL2: INTGO + SKIPN C,5(TB) + JRST GDECL1 ; OUT OF ATOMS + GETYP 0,(C) ; IS THIS AN ATOM + CAIE 0,TATOM + JRST GDECLL ; NO, LOSE + MOVE B,1(C) + HRRZ C,(C) + MOVEM C,5(TB) + PUSHJ P,IIGLOC ; GET ITS VAL (OR MAKE ONE) + GETYP 0,(B) ; UNBOUND? + CAIE 0,TUNBOU + JRST CHKCUR ; CHECK CURRENT VALUE + MOVE C,3(TB) ; GET DECL + HRRM C,-2(B) + JRST GDECL2 + +CHKCUR: HRRZ D,3(TB) + GETYP A,(D) + MOVSI A,(A) + MOVE E,B + MOVE B,1(D) + MOVE C,(E) + MOVE D,1(E) + PUSH TP,$TVEC + PUSH TP,E + JSP E,CHKAB + PUSHJ P,TMATCH + JRST TYPMI3 + MOVE E,(TP) + SUB TP,[2,,2] + MOVE D,3(TB) + HRRM D,-2(E) + JRST GDECL2 + +TYPMI3: MOVE E,(TP) ; POINT BACK TO SLOT + MOVE A,-1(E) ; ATOM TO A + MOVE B,1(E) + MOVE D,(E) ; GET OLD VALUE + MOVE C,3(TB) + JRST TYPMIS ; GO COMPLAIN + +GDECLL: PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-ARGUMENT-LIST + JRST CALER1 + +MFUNCTION UNMANIFEST,SUBR + + ENTRY + + PUSH P,[HLLZS -2(B)] + JRST MANLP + +MFUNCTION MANIFEST,SUBR + + ENTRY + + PUSH P,[HLLOS -2(B)] +MANLP: JUMPGE AB,RETT + GETYP 0,(AB) + CAIE 0,TATOM + JRST WTYP + MOVE B,1(AB) + PUSHJ P,IIGLOC + XCT (P) + ADD AB,[2,,2] + JRST MANLP + +MFUNCTION MANIFQ,SUBR,[MANIFEST?] + + ENTRY 1 + + GETYP 0,(AB) + CAIE 0,TATOM + JRST WTYP1 + + MOVE B,1(AB) + PUSHJ P,IGLOC ; GET POINTER IF ANY + GETYP 0,A + CAIN 0,TUNBOU + JRST RETF + HRRZ 0,-2(B) + CAIE 0,-1 + JRST RETF + JRST RETT + +MFUNCTION GETDECL,SUBR,[GET-DECL] + + ENTRY 1 + + PUSHJ P,GTLOC + JRST GTLOCA + + HRRZ C,-2(B) ; GET GLOBAL DECL +GETD1: JUMPE C,RETF + CAIN C,-1 + JRST RETMAN + GETYP A,(C) + MOVSI A,(A) + MOVE B,1(C) + JSP E,CHKAB + JRST FINIS + +RETMAN: MOVSI A,TATOM + MOVE B,MQUOTE MANIFEST + JRST FINIS + +GTLOCA: HLRZ C,2(B) ; LOCAL DECL + JRST GETD1 + +MFUNCTION PUTDECL,SUBR,[PUT-DECL] + + ENTRY 2 + + PUSHJ P,GTLOC + SKIPA E,[HRLM B,2(C)] + MOVE E,[HRRM B,-2(C)] + PUSH P,E + GETYP 0,(B) ; ANY VALUE + CAIN 0,TUNBOU + JRST PUTD1 + MOVE C,(B) ; GET CURRENT VALUE + MOVE D,1(B) + MOVE A,2(AB) + MOVE B,3(AB) + PUSHJ P,TMATCH + JRST TYPMI4 +PUTD1: MOVE C,2(AB) ; GET DECL BACK + MOVE D,3(AB) + PUSHJ P,INCONS ; CONS IT UP + MOVE C,1(AB) ; LOCATIVE BACK + XCT (P) ; CLOBBER + MOVE A,(AB) + MOVE B,1(AB) + JRST FINIS + +TYPMI4: MOVE E,1(AB) ; GET LOCATIVE + MOVE A,-1(E) ; NOW ATOM + MOVEI C,2(AB) ; POINT TO DECL + MOVE D,(E) ; AND CURRENT VAL + MOVE B,1(E) + JRST TYPMIS + +GTLOC: GETYP 0,(AB) + CAIE 0,TLOCD + JRST WTYP1 + MOVEI B,(AB) + PUSHJ P,CHLOCI + HRRZ 0,(AB) ; LOCAL OR GLOBAL + SKIPN 0 + AOS (P) + MOVE B,1(AB) ; RETURN LOCATIVE IN B + POPJ P, + +; Interface between EVAL and declaration processor. +; E points into stack at a binding and C points to decl list. + +CHKDCL: SKIPE IGDECL ; IGNORING DECLS? + POPJ P, ; YUP, JUST LEAVE + + PUSH TP,$TTP ; SAVE BINDING + PUSH TP,E + MOVE A,-4(E) ; GET ATOM + MOVSI 0,TLIST ; SETUP FOR INTERRUPTABLE + MOVEM 0,CSTO(PVP) + MOVEM 0,BSTO(PVP) + MOVSI 0,TATOM + MOVEM 0,ASTO(PVP) + SETZB B,0 ; CLOBBER FOR INTGO + +DCL2: INTGO + HRRZ D,(C) ; MAKE SURE EVEN ELEMENTS + JUMPE D,BADCL + GETYP B,(C) ; MUST BE LIST OF ATOMS + CAIE B,TLIST + JRST BADCL + MOVE B,1(C) ; GET LIST + +DCL1: INTGO + CAMN A,1(B) ; SKIP IF NOT WINNER + JRST DCLQ ; MAY BE WINNER +DCL3: HRRZ B,(B) ; CDR ON + JUMPN B,DCL1 ; JUMP IF MORE + + HRRZ C,(D) ; CDR MAIN LIST + JUMPN C,DCL2 ; AND JUMP IF WINNING + + PUSHJ P,E.GET ; GET BINDING BACK + SUB TP,[2,,2] ; POP OF JUNK + POPJ P, + +DCLQ: GETYP C,(B) ; CHECK ATOMIC + CAIE C,TATOM + JRST BADCL ; LOSER + PUSHJ P,E.GET ; GOT IT + PUSH TP,$TLIST ; SAVE PATTERN + PUSH TP,D + MOVE B,1(D) ; GET PATTERN + HLLZ A,(D) + MOVE C,-3(E) ; PROPOSED VALUE + MOVE D,-2(E) + PUSHJ P,TMATCH ; MATCH TYPE + JRST TYPMI1 ; LOSER +DCLQ1: MOVE E,-2(TP) + MOVE C,-5(E) ; CHECK FOR SPEC CHANGE + SKIPE 0 ; MAKE SURE NON ZERO IS -1 + MOVNI 0,1 + SKIPL SPCCHK ; SKIP IF NORMAL UNSPECIAL + SETCM 0 ; COMPLEMENT + ANDI 0,1 ; ONE BIT + CAMN C,[TATOM,,-1] + JRST .+3 + CAME C,[TATOM,,-2] + JRST .+3 + ANDCMI C,1 + IOR C,0 ; MUNG BIT + MOVEM C,-5(E) + HRRZ C,(TP) + SUB TP,[4,,4] + MOVEM C,(E) ; STORE DECLS + MOVSI C,TLIST + MOVEM C,-1(E) + POPJ P, + +TYPMI1: MOVE E,-2(TP) + GETYP C,-3(E) + CAIN C,TUNBOU + JRST DCLQ1 + MOVE E,-2(TP) ; GET POINTER TO BIND + MOVE D,-3(E) ; GET VAL + MOVE B,-2(E) + HRRZ C,(TP) ; DCL LIST + MOVE A,-4(E) ; GET ATOM + SUB TP,[4,,4] +TYPMIS: PUSH TP,$TATOM + PUSH TP,EQUOTE TYPE-MISMATCH + PUSH TP,$TATOM + PUSH TP,A + PUSH TP,(C) + HLLZS (TP) + PUSH TP,1(C) + JSP E,CHKARG ; HACK DEFER + PUSH TP,D + PUSH TP,B + MOVEI A,4 ; 3 ERROR ARGS + JRST CALER + +BADCL: PUSHJ P,E.GET + PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-DECLARATION-LIST + JRST CALER1 + +; ROUTINE TO RESSET INT STUFF + +E.GET: MOVE E,(TP) + SETZM ASTO(PVP) + SETZM BSTO(PVP) + SETZM CSTO(PVP) + POPJ P, + +; Declarations processor for MUDDLE type declarations. +; Receives a pattern in a and B and an object in C and D. +; It skip returns if the object fits otherwise it doesn't. +; Declaration syntax errors are caught and sent to ERROR. + +TMATCH: MOVEI 0,1 ; RET SPECIAL INDICATOR + SKIPE IGDECL ; IGNORING DECLS? + JRST CPOPJ1 ; YUP, ACT LIKE THEY WON + +TMATCX: GETYP 0,A ; GET PATTERNS TYPE + CAIN 0,TFORM ; MUST BE FORM OR ATOM + JRST TMAT1 + CAIE 0,TATOM + JRST TERR1 ; WRONG TYPE FOR A DCL + +; SIMPLE TYPE MATCHER + +TYPMAT: GETYP E,C ; OBJECTS TYPE TO E + PUSH P,E ; SAVE IT + PUSHJ P,TYPFND ; CONVERT TYPE NAME TO CODE + JRST SPECS ; NOT A TYPE NAME, TRY SPECIALS + POP P,E ; RESTORE TYPE OF OBJECT + MOVEI 0,0 ; SPECIAL INDICATOR + CAIN E,(D) ; SKIP IF LOSERS +CPOPJ1: AOS (P) ; GOOD RETURN +CPOPJ: POPJ P, + +SPECS: POP P,A ; RESTORE OBJECTS TYPE + CAMN B,MQUOTE ANY + JRST CPOPJ1 ; RETURN IMMEDIATELY IF ANYTHING WINS + CAMN B,MQUOTE STRUCTURED + JRST ISTRUC ; LET ISTRUC DO THE WORK + CAMN B,MQUOTE APPLICABLE + JRST APLQ + CAME B,MQUOTE LOCATIVE + JRST TERR2 + JRST LOCQQ + +; ARRIVE HERE FOR A FORM IN THE DCLS + +TMAT1: JUMPE B,TERR3 ; EMPTY FORM LOSES + HRRZ E,(B) ; CDR IT + JUMPE E,TMAT3 ; CANT BE SPECIAL/UNSPECIAL, LEAVE + PUSHJ P,0ATGET ; GET POSSIBLE ATOM IN 0 + JRST TEXP1 ; NOT ATOM + CAME 0,MQUOTE SPECIAL + CAMN 0,MQUOTE UNSPECIAL + JRST TMAT2 ; IGNORE SPECIAL/UNSPECIAL +TMAT3: PUSHJ P,TEXP1 + JRST .+2 + AOS (P) + MOVEI 0,0 ; RET UNSPECIAL INDICATION + POPJ P, + +TEXP1: JUMPE B,TERR3 ; EMPTY FORM + GETYP 0,A ; CHECK CURRENT TYPE + CAIN 0,TATOM ; IF ATOM, + JRST TYPMA1 ; SIMPLE MATCH + CAIE 0,TFORM + JRST TERR4 + GETYP 0,(B) ; WHAT IS FIRST ELEMEMT + CAIE 0,TFORM ; FORM=> <....> OR <....> + JRST 0,TEXP12 + PUSH TP,$TLIST ; SAVE LIST + PUSH TP,B + MOVE B,1(B) ; GET FORM + PUSH TP,C + PUSH TP,D + PUSHJ P,ACTRT1 + TDZA 0,0 ; REMEMBER LACK OF SKIP + MOVEI 0,1 + POP TP,D + POP TP,C + MOVE B,(TP) ; GET BACK SAVED LIST + SUB TP,[2,,2] + JUMPE 0,CPOPJ ; LOSERS EXIT IMMEDIATELY + HRRZ B,(B) ; OTHERWISE REST THE LIST AND FALL INTO ELETYPE + +; CHECKS TYPES OF ELEMENTS OF STRUCTURES + +ELETYP: JUMPE B,CPOPJ1 ; EMPTY=> WON + PUSH TP,$TLIST ; SAVE DCL LIST + PUSH TP,B + MOVE A,C ; GET OBJ IN A AND B + MOVE B,D + PUSHJ P,TYPSGR ; GET REST/NTH CODE + JRST ELETYL ; LOSER + PUSH TP,DSTO(PVP) + PUSH TP,D + PUSH P,C ; SAVE CODE + PUSH TP,[0] ; AND SLOTS + PUSH TP,[0] + +; MAIN ELEMENT SCANNING LOOP + +ELETY1: XCT TESTR(C) ; SKIP IF OBJ NOT EMPTY + JRST ELETY2 ; CHEK EMPTY WINNER + XCT TYPG(C) ; GET ELEMENT + XCT VALG(C) + JSP E,CHKAB ; CHECK OUT DEFER + MOVEM A,-1(TP) ; AND SAVE IT + MOVEM B,(TP) + MOVE C,A + MOVE D,B ; FOR OTHER MATCHERS + MOVE B,-4(TP) ; GET PATTERN + MOVE A,(B) + GETYP 0,(B) ; GET TYPE OF <1 pattern> + MOVE B,1(B) ; GET ATOM OR WHATEVER + CAIE 0,TATOM ; ATOM ... SIMPLE TYPE + JRST ELETY3 + PUSHJ P,TYPMAT ; DO SIMPLE TYPE MATCH + JRST ELETY4 ; LOSER + +; HERE TO REST EVERYTHING AND GO ON BACK + +ELETY6: MOVE D,-2(TP) ; GET OBJ POINTER + MOVE C,(P) ; GET INCREMENT CODE + XCT INCR1(C) + MOVEM D,-2(TP) ; SAVED INCREMENTED GOODIR + MOVE 0,DSTO(PVP) + MOVEM 0,-3(TP) + +ELETY9: HRRZ B,@-4(TP) ; CDR IT + MOVEM B,-4(TP) + JUMPN B,ELETY1 + +; HERE IF PATTERN EMPTY + +ELETY8: AOS -1(P) ; SKIP RETURN +ELETY4: SETZM DSTO(PVP) + SUB P,[1,,1] + SUB TP,[6,,6] + POPJ P, + +ELETYL: SUB TP,[2,,2] + POPJ P, + +; HERE TO HANDLE EMPTY OBJECT + +ELETY2: MOVE B,-4(TP) ; GET PATTERN + GETYP 0,(B) ; CHECK FOR [REST ...] + SETZM DSTO(PVP) + CAIE 0,TVEC + JRST ELETY4 ; LOSER + HLRZ 0,1(B) ; SIZE OF IT + CAILE 0,-4 ; MUST BE 2 + JRST ELETY4 + MOVE B,1(B) ; GET IT + PUSHJ P,0ATGET ; LOOK FOR REST + JRST ELETY4 + CAMN 0,MQUOTE REST + JRST ELETY8 ; WINNER!!!! + JRST ELETY4 ; LOSER + +; HERE TO CHECK OUT A FORM ELEMNT + +ELETY3: CAIE 0,TFORM + JRST ELETY7 + SETZM DSTO(PVP) + PUSHJ P,TEXP1 ; AND ANALYSE IT + JRST ELETY4 ; LOSER + MOVE 0,-3(TP) ; RESET DSTO + MOVEM 0,DSTO(PVP) + JRST ELETY6 ; WINNER + +; CHECK FOR VECTOR IN PATTERN + +ELETY7: CAIE 0,TVEC ; SKIP IF WINNER + JRST TERR12 ; YET ANOTHER ERROR + HLRE C,B ; CHECK LEENGTH + CAMLE C,[-4] ; MUST BE 2 LONG + JRST TERR13 + PUSHJ P,0ATGET ; 1ST ELEMENT ATOM? + JRST ELET71 ; COULD BE FORM + CAME 0,MQUOTE REST + JRST TERR14 + MOVNI 0,1 ; FLAG USED IN RESTIT + PUSHJ P,RESTIT ; CHECK REST OF STRUCTUR + JRST ELETY4 + JRST ELETY8 ; WIN AND DONE + +; CHECK FOR [fix .... ] + +ELET71: CAIE 0,TFIX + JRST TERR15 + MOVNS C + ASH C,-1 + MOVE 0,1(B) ; GET NUMBER + IMULI 0,-1(C) ; COUNT MORE + PUSHJ P,RESTIT ; AND CHECK FIX NUM OF ELEMENTS + JRST ELETY4 + MOVE D,-2(TP) ; GET OBJECT BACK + MOVE 0,-3(TP) ; RESET DSTO + MOVEM 0,DSTO(PVP) + MOVE C,(P) ; RESTORE CODE FOR RESTING ETC. + JRST ELETY9 + + +; HERE TO DO A TASTEFUL TYPMAT + +TYPMA1: PUSH TP,C + PUSH TP,D + PUSHJ P,TYPMAT + TDZA 0,0 ; REMEMBER LOSSAGE + MOVEI 0,1 ; OR WINNAGE + POP TP,D + POP TP,C ; RESTORE OBJECT + JUMPN 0,CPOPJ1 ; SKIPPED BEFORE, SKIP AGAIN + POPJ P, + +; HERE TO SKIP SPECIAL/UNSPECIAL + +TMAT2: CAME 0,MQUOTE SPECIAL + TDZA 0,0 + MOVEI 0,1 + PUSH P,0 ; SAVE INDICATOR + GETYP A,(E) ; TYPE OF NEW PAT + MOVE B,1(E) ; VALUE + MOVSI A,(A) + PUSHJ P,TEXP1 + JRST .+2 + AOS -1(P) + POP P,0 + POPJ P, + +; LOOK FOR SIMPLE TYPE + CAIN 0,TFORM ; FORM--> HAIRY PATTERN + MOVEI E,TEXP1 + PUSHJ P,(E) ; DO IT + JRST RESTI5 + JRST RESTI4 + +RESTI2: SKIPGE (P) ; SKIP IF WON + AOS -2(P) ; COUNTERACT CPOPJ1 + JRST RESTI5 + +RESTI3: TEXP1 + TYPMAT + +; HERE TO MATHC A QUOTED OBJ +; B/ FORM QUOTE... C,D/ OBJECT TO MATCH AGAINST + +MQUOT: HRRZ B,(B) ; LOOK AT NEXT + JUMPE B,TERR7 + GETYP A,(B) ; GET TYPE + MOVSI A,(A) + MOVE B,1(B) ; AND VALUE + JSP E,CHKAB ; HACK DEFER + PUSH TP,A + PUSH TP,B + PUSH TP,C + PUSH TP,D + MOVEI D,-3(TP) + MOVEI C,-1(TP) + PUSHJ P,IEQUAL + TDZA 0,0 + MOVEI 0,1 + JRST POPPIT + + +; GET ATOM IN AC 0 + +0ATGET: GETYP 0,(B) + CAIE 0,TATOM ; SKIP IF ATOM + POPJ P, + MOVE 0,1(B) ; GET ATOM + JRST CPOPJ1 + +TERR9: MOVS A,0 ; TYPE TO A +TERR4: +TERR5: +TERR15: +TERR1: MOVE E,EQUOTE DECL-ELEMENT-NOT-FORM-OR-ATOM + JRST TERRD + +TERR2: MOVSI A,TATOM + MOVE E,EQUOTE ATOM-NOT-TYPE-NAME-OR-SPECIAL-SYMBOL + JRST TERRD +TERR6: +TERR3: MOVE E,EQUOTE EMPTY-FORM-IN-DECL + JRST TERRD +TERR7: MOVE E,EQUOTE EMPTY-OR/PRIMTYPE-FORM + JRST TERRD + +TERR8: MOVS A,0 ; TYPE TO A + MOVE E,EQUOTE NON-TYPE-FOR-PRIMTYPE-ARG + JRST TERRD +TERR12: MOVE E,EQUOTE ELEMENT-TYPE-NOT-ATOM-FORM-OR-VECTOR + JRST TERRD +TERR13: MOVE E,EQUOTE VECTOR-LESS-THAN-2-ELEMENTS + JRST TERRD +TERR14: MOVE E,EQUOTE FIRST-VECTOR-ELEMENT-NOT-REST-OR-A-FIX + +TERRD: PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-TYPE-SPECIFICATION + PUSH TP,$TATOM + PUSH TP,E + PUSH TP,A + PUSH TP,B + MOVEI A,3 + JRST CALER + +IMPURE + +IGDECL: 0 + +PURE + +END + TITLE EVAL -- MUDDLE EVALUATOR + +RELOCATABLE + +; GERALD JAY SUSSMAN, 1971. REWRITTEN MANY TIMES SINCE C. REEVE (1972--1974) + + +.GLOBAL BINDID,LPROG,GLOBSP,GLOBASE,SPBASE,TPBASE,PTIME,SWAP,CHFRAM +.GLOBAL IGVAL,CHKARG,NXTDCL,TPOVFL,CHFRM,PROCHK,CHFSWP,VECBOT,TYPSGR +.GLOBAL ILVAL,ER1ARG,SPECBIND,MAKACT,SPECSTORE,MAKTUP,TPALOC,IBIND,SSPECS +.GLOBAL IDVAL,EVECTO,EUVECT,CHARGS,BCKTRK,CELL,ILOC,IGLOC,CHKDCL,SSPEC1 +.GLOBAL PDLBUF,MESS,FACTI,CHKARG,MAKENV,PSTAT,BNDV,UNBOU,UNAS,IGDECL +.GLOBAL 1STEPR,SEGMNT,SEGLST,NAPT,EVTYPE,EVATYP,APTYPE,APLTYP,APLQ,IDVAL1 +.GLOBAL TESTR,VALG,TYPG,INCR1,TMATCH,TYPMIS,SAT,MAKACT,NTPALO,SPECBND +.GLOBAL TPGROW,CHKAB,TYPSEG,NXTLM,MONCH0,CHFINI,RMONC0,IMPURIFY,ICONS,INCONS +.GLOBAL CILVAL,CISET,CIGVAL,CSETG,MAPPLY,CLLOC,CGLOC,CASSQ,CGASSQ,CBOUND +.GLOBAL IIGLOC,CHUNW,IUNWIN,UNWIN2,SPCCHK,CURFCN,TMPLNT,TD.LNT,TBINIT +.GLOBAL SPECBE +.GLOBAL AGC,GVLINC,LVLINC,CGBOUN,IEVECT,MAKTU2 + +.INSRT MUDDLE > + +MONITOR + + +; ENTRY TO EXPAND A MACRO + +MFUNCTION EXPAND,SUBR + + ENTRY 1 + + MOVEI A,PVLNT*2+1(PVP) + HRLI A,TFRAME + MOVE B,TBINIT+1(PVP) + HLL B,OTBSAV(B) + PUSH TP,A + PUSH TP,B + MOVEI B,-1(TP) + JRST AEVAL2 + +; MAIN EVAL ENTRANCE + +MFUNCTION EVAL,SUBR + + ENTRY + + SKIPE C,1STEPR+1(PVP) ; BEING 1 STEPPED? + JRST 1STEPI ; YES HANDLE +EVALON: HLRZ A,AB ;GET NUMBER OF ARGS + CAIE A,-2 ;EXACTLY 1? + JRST AEVAL ;EVAL WITH AN ALIST +SEVAL: GETYP A,(AB) ;GET TYPE OF ARG + SKIPE C,EVATYP+1(TVP) ; USER TYPE TABLE? + JRST EVDISP +SEVAL1: CAIG A,NUMPRI ;PRIMITIVE? + JRST @EVTYPE(A) ;YES-DISPATCH + +SELF: MOVE A,(AB) ;TYPES WHICH EVALUATE + MOVE B,1(AB) + JRST EFINIS ;TO SELF-EG NUMBERS + +; HERE FOR USER EVAL DISPATCH + +EVDISP: ADDI C,(A) ; POINT TO SLOT + ADDI C,(A) + SKIPE (C) ; SKIP EITHER A LOSER OR JRST DISP + JRST EVDIS1 ; APPLY EVALUATOR + SKIPN C,1(C) ; GET ADDR OR GO TO PURE DISP + JRST SEVAL1 + JRST (C) + +EVDIS1: PUSH TP,(C) + PUSH TP,1(C) + PUSH TP,(AB) + PUSH TP,1(AB) + MCALL 2,APPLY ; APPLY HACKER TO OBJECT + JRST EFINIS + + +; EVAL DISPATCH TABLE + +DISTBL EVTYPE,SELF,[[TFORM,EVFORM],[TLIST,EVLIST],[TVEC,EVECT],[TUVEC,EUVEC] +[TSEG,ILLSEG]] + + +;WATCH FOR SUBTLE BUG 43 LERR,LPROG OR BINDID +AEVAL: + CAIE A,-4 ;EXACTLY 2 ARGS? + JRST WNA ;NO-ERROR + GETYP A,2(AB) ;CHECK THAT WE HAVE A FRAME + CAIE A,TACT + CAIN A,TFRAME + JRST .+3 + CAIE A,TENV + JRST TRYPRO ; COULD BE PROCESS + MOVEI B,2(AB) ; POINT TO FRAME +AEVAL2: PUSHJ P,CHENV ; HACK ENVIRONMENT CHANGE +AEVAL1: PUSH TP,(AB) + PUSH TP,1(AB) + MCALL 1,EVAL +AEVAL3: HRRZ 0,FSAV(TB) + CAIN 0,EVAL + JRST EFINIS + JRST FINIS + +TRYPRO: CAIE A,TPVP ; SKIP IF IT IS A PROCESS + JRST WTYP2 + MOVE C,3(AB) ; GET PROCESS + CAMN C,PVP ; DIFFERENT FROM ME? + JRST SEVAL ; NO, NORMAL EVAL WINS + MOVE B,SPSTO+1(C) ; GET SP FOR PROCESS + MOVE D,TBSTO+1(C) ; GET TOP FRAME + HLL D,OTBSAV(D) ; TIME IT + MOVEI C,PVLNT*2+1(C) ; CONS UP POINTER TO PROC DOPE WORD + HRLI C,TFRAME ; LOOK LIK E A FRAME + PUSHJ P,SWITSP ; SPLICE ENVIRONMENT + JRST AEVAL1 + +; ROUTINE TO CHANGE LOOK UP PATH FOR BINDINGS + +CHENV: PUSHJ P,CHFRM ; CHECK OUT FRAME + MOVE C,(B) ; POINT TO PROCESS + MOVE D,1(B) ; GET TB POINTER FROM FRAME + CAMN SP,SPSAV(D) ; CHANGE? + POPJ P, ; NO, JUST RET + MOVE B,SPSAV(D) ; GET SP OF INTEREST +SWITSP: MOVSI 0,TSKIP ; SET UP SKIP + HRRI 0,1(TP) ; POINT TO UNBIND PATH + MOVE A,PVP + ADD A,[BINDID,,BINDID] ; BIND THE BINDING ID + PUSH TP,BNDV + PUSH TP,A + PUSH TP,$TFIX + AOS A,PTIME ; NEW ID + PUSH TP,A + MOVE E,TP ; FOR SPECBIND + PUSH TP,0 + PUSH TP,B + PUSH TP,C ; SAVE PROCESS + PUSH TP,D + PUSHJ P,SPECBE ; BIND BINDID + MOVE SP,TP ; GET NEW SP + SUB SP,[3,,3] ; SET UP SP FORK + POPJ P, + + +; HERE TO EVALUATE A FORM (99% OF EVAL'S WORK) + +EVFORM: SKIPN C,1(AB) ; EMPTY FORM, RETURN FALSE + JRST EFALSE + GETYP A,(C) ; 1ST ELEMENT OF FORM + CAIE A,TATOM ; ATOM? + JRST EV0 ; NO, EVALUATE IT + MOVE B,1(C) ; GET ATOM + PUSHJ P,IGVAL ; GET ITS GLOBAL VALUE + +; SPECIAL HACK TO SPEED UP LVAL AND GVAL CALLS + + CAIE B,LVAL + CAIN B,GVAL + JRST ATMVAL ; FAST ATOM VALUE + + GETYP 0,A + CAIE 0,TUNBOU ; BOUND? + JRST IAPPLY ; YES APPLY IT + + MOVE C,1(AB) ; LOOK FOR LOCAL + MOVE B,1(C) + PUSHJ P,ILVAL + GETYP 0,A + CAIE 0,TUNBOU + JRST IAPPLY ; WIN, GO APPLY IT + + PUSH TP,$TATOM + PUSH TP,EQUOTE UNBOUND-VARIABLE + PUSH TP,$TATOM + MOVE C,1(AB) ; FORM BACK + PUSH TP,1(C) + PUSH TP,$TATOM + PUSH TP,MQUOTE VALUE + MCALL 3,ERROR ; REPORT THE ERROR + JRST IAPPLY + +EFALSE: MOVSI A,TFALSE ; SPECIAL FALSE FOR EVAL OF EMPTY FORM + MOVEI B,0 + JRST EFINIS + +ATMVAL: HRRZ D,(C) ; CDR THE FORM + HRRZ 0,(D) ; AND AGAIN + JUMPN 0,IAPPLY + GETYP 0,(D) ; MAKE SURE APPLYING TO ATOM + CAIE 0,TATOM + JRST IAPPLY + MOVEI E,IGVAL ; ASSUME GLOBAAL + CAIE B,GVAL ; SKIP IF OK + MOVEI E,ILVAL ; ELSE USE LOCAL + PUSH P,B ; SAVE SUBR + MOVE B,(D)+1 ; CLR BUG #1637 (GET THE ATOM FOR THE SUBR) + PUSHJ P,(E) ; AND GET VALUE + CAME A,$TUNBOU + JRST EFINIS ; RETURN FROM EVAL + POP P,B + MOVSI A,TSUBR ; CAUSE REAL SUBR TO GET EROR + JRST IAPPLY + +; HERE FOR 1ST ELEMENT NOT A FORM + +EV0: PUSHJ P,FASTEV ; EVAL IT + +; HERE TO APPLY THINGS IN FORMS + +IAPPLY: PUSH TP,(AB) ; SAVE THE FORM + PUSH TP,1(AB) + PUSH TP,A + PUSH TP,B ; SAVE THE APPLIER + PUSH TP,$TFIX ; AND THE ARG GETTER + PUSH TP,[ARGCDR] + PUSHJ P,APLDIS ; GO TO INTERNAL APPLIER + JRST EFINIS ; LEAVE EVAL + +; HERE TO EVAL 1ST ELEMENT OF A FORM + +FASTEV: SKIPE 1STEPR+1(PVP) ; BEING 1 STEPPED? + JRST EV02 ; YES, LET LOSER SEE THIS EVAL + GETYP A,(C) ; GET TYPE + SKIPE D,EVATYP+1(TVP) ; USER TABLE? + JRST EV01 ; YES, HACK IT +EV03: CAIG A,NUMPRI ; SKIP IF SELF + SKIPA A,EVTYPE(A) ; GET DISPATCH + MOVEI A,SELF ; USE SLEF + +EV04: CAIE A,SELF ; IF EVAL'S TO SELF, JUST USE IT + JRST EV02 + MOVSI A,TLIST + MOVEM A,CSTO(PVP) + INTGO + SETZM CSTO(PVP) + HLLZ A,(C) ; GET IT + MOVE B,1(C) + JSP E,CHKAB ; CHECK DEFERS + POPJ P, ; AND RETURN + +EV01: ADDI D,(A) ; POINT TO SLOT OF USER EVAL TABLE + ADDI D,(A) + SKIPE (D) ; EITHER NOT GIVEN OR SIMPLE + JRST EV02 + SKIPN 1(D) ; SKIP IF SIMPLE + JRST EV03 ; NOT GIVEN + MOVE A,1(D) + JRST EV04 + +EV02: PUSH TP,(C) + HLLZS (TP) ; FIX UP LH + PUSH TP,1(C) + JSP E,CHKARG + MCALL 1,EVAL + POPJ P, + + +; MAPF/MAPR CALL TO APPLY + + MQUOTE APPLY + +MAPPLY: JRST APPLY + +; APPLY, FALLS INTO EVAL'S APPLY CODE AT APLDIS + +MFUNCTION APPLY,SUBR + + ENTRY + + JUMPGE AB,TFA ; MUST BE AT LEAST 1 ARGUMENT + MOVE A,AB + ADD A,[2,,2] + PUSH TP,$TAB + PUSH TP,A + PUSH TP,(AB) ; SAVE FCN + PUSH TP,1(AB) + PUSH TP,$TFIX ; AND ARG GETTER + PUSH TP,[SETZ APLARG] + PUSHJ P,APLDIS + JRST FINIS + +; STACKFROM, ALSO FALLS INTO EVAL'S APPLIER AT APLDIS + +MFUNCTION STACKFORM,FSUBR + + ENTRY 1 + + GETYP A,(AB) + CAIE A,TLIST + JRST WTYP1 + MOVEI A,3 ; CHECK ALL GOODIES SUPPLIED + HRRZ B,1(AB) + + JUMPE B,TFA + HRRZ B,(B) ; CDR IT + SOJG A,.-2 + + HRRZ C,1(AB) ; GET LIST BACK + PUSHJ P,FASTEV ; DO A FAST EVALUATION + PUSH TP,(AB) + HRRZ C,@1(AB) ; POINT TO ARG GETTING FORMS + PUSH TP,C + PUSH TP,A ; AND FCN + PUSH TP,B + PUSH TP,$TFIX + PUSH TP,[SETZ EVALRG] + PUSHJ P,APLDIS + JRST FINIS + + +; OFFSETS FOR TEMPORARIES ETC. USED IN APPLYING STUFF + +E.FRM==0 ; POINTS TO FORM BEING EVALED (OR ARGS FOR APPLY STACKFORM) +E.FCN==2 ; FUNCTION/SUBR/RSUBR BEING APPLIED +E.ARG==4 ; POINTS TO ARG GETTING ROUTINE (<0 => MUST EVAL ARGS) +E.EXTR==6 ; CONTAINS 1ST ARG IN USER APPLY CASE +E.SEG==10 ; POINTS TO SEGMENT IN FORM BEING HACKED +E.CNT==12 ; COUNTER FOR TUPLES OF ARGS +E.DECL==14 ; POINTS TO DECLARATION LIST IN FUNCTIONS +E.ARGL==16 ; POINTS TO ARG LIST IN FUNCTIONS +E.HEW==20 ; POINTS TO HEWITT ATOM IF IT EXISTS + +E.VAL==E.ARGL ; VALUE TYPE FOR RSUBRS + +MINTM==E.EXTR+2 ; MIN # OF TEMPS EVER ALLOCATED +E.TSUB==E.CNT+2 ; # OF TEMPS FOR SUBR/NUMBER APPLICATION +XP.TMP==E.HEW-E.EXTR ; # EXTRA TEMPS FOR FUNCTION APPLICATION +R.TMP==4 ; TEMPS AFTER ARGS ARE BOUND +TM.OFF==E.HEW+2-R.TMP ; TEMPS TO FLUSH AFTER BIND OF ARGS + +RE.FCN==0 ; AFTER BINDING CONTAINS FCN BODY +RE.ARG==2 ; ARG LIST AFTER BINDING + +; GENERAL THING APPLYER + +APLDIS: PUSH TP,[0] ; SLOT USED FOR USER APPLYERS + PUSH TP,[0] +APLDIX: GETYP A,E.FCN(TB) ; GET TYPE + +APLDI: SKIPE D,APLTYP+1(TVP) ; USER TABLE EXISTS? + JRST APLDI1 ; YES, USE IT +APLDI2: CAIG A,NUMPRI ; SKIP IF NOT PRIM + JRST @APTYPE(A) + JRST NAPT + +APLDI1: ADDI D,(A) ; POINT TO SLOT + ADDI D,(A) + SKIPE (D) ; SKIP IF NOT GIVEN OR STANDARD + JRST APLDI3 +APLDI4: SKIPE D,1(D) ; GET DISP + JRST (D) + JRST APLDI2 ; USE SYSTEM DISPATCH + +APLDI3: SKIPE E.EXTR+1(TB) ; SKIP IF HAVEN'T BEEN HERE BEFORE + JRST APLDI4 + MOVE A,(D) ; GET ITS HANDLER + EXCH A,E.FCN(TB) ; AND USE AS FCN + MOVEM A,E.EXTR(TB) ; SAVE + MOVE A,1(D) + EXCH A,E.FCN+1(TB) + MOVEM A,E.EXTR+1(TB) ; STASH OLD FCN AS EXTRG + GETYP A,(D) ; GET TYPE + JRST APLDI + + +; APPLY DISPATCH TABLE + +DISTBL APTYPE,,[[TSUBR,APSUBR],[TFSUBR,APFSUB],[TRSUBR,APRSUB],[TFIX,APNUM] +[TEXPR,APEXPR],[TFUNAR,APFUNARG],[TENTER,APENTR],[TMACRO,APMACR]] + +; SUBR TO SAY IF TYPE IS APPLICABLE + +MFUNCTION APPLIC,SUBR,[APPLICABLE?] + + ENTRY 1 + + GETYP A,(AB) + PUSHJ P,APLQ + JRST IFALSE + JRST TRUTH + +; HERE TO DETERMINE IF A TYPE IS APPLICABLE + +APLQ: PUSH P,B + SKIPN B,APLTYP+1(TVP) + JRST USEPUR ; USE PURE TABLE + ADDI B,(A) + ADDI B,(A) ; POINT TO SLOT + SKIPG 1(B) ; SKIP IF WINNER + SKIPE (B) ; SKIP IF POTENIAL LOSER + JRST CPPJ1B ; WIN + SKIPE 1(B) ; SKIP IF MUST USE PURE TABBLE + JRST CPOPJB +USEPUR: CAIG A,NUMPRI ; SKIP IF NOT PRIM + SKIPL APTYPE(A) ; SKIP IF APLLICABLE +CPPJ1B: AOS -1(P) +CPOPJB: POP P,B + POPJ P, + +; FSUBR APPLYER + +APFSUBR: + SKIPN E.EXTR(TB) ; IF EXTRA ARG + SKIPGE E.ARG+1(TB) ; OR APPLY/STACKFORM, LOSE + JRST BADFSB + MOVE A,E.FCN+1(TB) ; GET FCN + HRRZ C,@E.FRM+1(TB) ; GET ARG LIST + SUB TP,[MINTM,,MINTM] ; FLUSH UNWANTED TEMPS + PUSH TP,$TLIST + PUSH TP,C ; ARG TO STACK + .MCALL 1,(A) ; AND CALL + POPJ P, ; AND LEAVE + +; SUBR APPLYER + +APSUBR: + PUSHJ P,PSH4ZR ; SET UP ZEROED SLOTS + SKIPN A,E.EXTR(TB) ; FUNNY ARGS + JRST APSUB1 ; NO, GO + MOVE B,E.EXTR+1(TB) ; YES , GET VAL + JRST APSUB2 ; AND FALL IN + +APSUB1: PUSHJ P,@E.ARG+1(TB) ; EAT AN ARG + JRST APSUBD ; DONE +APSUB2: PUSH TP,A + PUSH TP,B + AOS E.CNT+1(TB) ; COUNT IT + JRST APSUB1 + +APSUBD: MOVE A,E.CNT+1(TB) ; FINISHED, GET COUNT + MOVE B,E.FCN+1(TB) ; AND SUBR + GETYP 0,E.FCN(TB) + CAIN 0,TENTER + JRST APENDN + PUSHJ P,BLTDN ; FLUSH CRUFT + .ACALL A,(B) + POPJ P, + +BLTDN: MOVEI C,(TB) ; POINT TO DEST + HRLI C,E.TSUB(C) ; AND SOURCE + BLT C,-E.TSUB(TP) ;BL..............T + SUB TP,[E.TSUB,,E.TSUB] + POPJ P, + +APENDN: PUSHJ P,BLTDN +APNDN1: .ECALL A,(B) + POPJ P, + +; FLAGS FOR RSUBR HACKER + +F.STR==1 +F.OPT==2 +F.QUO==4 +F.NFST==10 + +; APPLY OBJECTS OF TYPE RSUBR + +APENTR: +APRSUBR: + MOVE C,E.FCN+1(TB) ; GET THE RSUBR + CAML C,[-5,,] ; IS IT LONG ENOUGH FOR DECLS + JRST APSUBR ; NO TREAT AS A SUBR + GETYP 0,4(C) ; GET TYPE OF 3D ELEMENT + CAIE 0,TDECL ; DECLARATION? + JRST APSUBR ; NO, TREAT AS SUBR + PUSHJ P,PSH4ZR ; ALLOCATE SOME EXTRA ROOM + PUSH TP,$TDECL ; PUSH UP THE DECLS + PUSH TP,5(C) + PUSH TP,$TLOSE ; SAVE ROOM FOR VAL DECL + PUSH TP,[0] + + SKIPN E.EXTR(TB) ; "EXTRA" ARG? + JRST APRSU1 ; NO, + MOVE 0,[SETZ EXTRGT] ; CHANGE THE ACCESS FCN + EXCH 0,E.ARG+1(TB) + HRRM 0,E.ARG(TB) ; REMEMBER IT + +APRSU1: MOVEI 0,0 ; INIT FLAG REGISTER + PUSH P,0 ; SAVE + +APRSU2: HRRZ A,E.DECL+1(TB) ; GET DECL LIST + JUMPE A,APRSU3 ; DONE! + HRRZ B,(A) ; CDR IT + MOVEM B,E.DECL+1(TB) + PUSHJ P,NXTDCL ; IS NEXT THING A STRING? + JRST APRSU4 ; NO, BETTER BE A TYPE + CAMN B,[ASCII /VALUE/] + JRST RSBVAL ; SAVE VAL DECL + TRON 0,F.NFST ; IF NOT FIRST, LOSE + CAME B,[ASCII /CALL/] ; CALL DECL + JRST APRSU7 + SKIPGE E.ARG+1(TB) ; LEGAL? + JRST MPD + MOVE C,E.FRM(TB) + MOVE D,E.FRM+1(TB) ; GET FORM + JRST APRS10 ; HACK IT + +APRSU5: TROE 0,F.STR ; STRING STRING? + JRST MPD ; LOSER + CAME B,[+1] ; OPTIONA? + JRST APRSU8 + TROE 0,F.OPT ; CHECK AND SET + JRST MPD ; OPTINAL OPTIONAL LOSES + JRST APRSU2 ; TO MAIN LOOP + +APRSU7: CAME B,[ASCII /QUOTE/] + JRST APRSU5 + TRO 0,F.STR + TROE 0,F.QUO ; TURN ON AND CHECK QUOTE + JRST MPD ; QUOTE QUOTE LOSES + JRST APRSU2 ; GO TO END OF LOOP + + +APRSU8: CAME B,[ASCII /ARGS/] + JRST APRSU9 + SKIPGE E.ARG+1(TB) ; SKIP IF LEGAL + JRST MPD + HRRZ D,@E.FRM+1(TB) ; GET ARG LIST + MOVSI C,TLIST + +APRS10: HRRZ A,(A) ; GET THE DECL + MOVEM A,E.DECL+1(TB) ; CLOBBER + HRRZ B,(A) ; CHECK FOR TOO MUCH + JUMPN B,MPD + MOVE B,1(A) ; GET DECL + HLLZ A,(A) ; GOT THE DECL + MOVEM 0,(P) ; SAVE FLAGS + JSP E,CHKAB ; CHECK DEFER + PUSH TP,C + PUSH TP,D ; SAVE + PUSHJ P,TMATCH + JRST WTYP + AOS E.CNT+1(TB) ; COUNT ARG + JRST APRDON ; GO CALL RSUBR + +RSBVAL: HRRZ A,E.DECL+1(TB) ; GET DECL + JUMPE A,MPD + HRRZ B,(A) ; POINT TO DECL + MOVEM B,E.DECL+1(TB) ; SAVE NEW DECL POINTER + PUSHJ P,NXTDCL + JRST .+2 + JRST MPD + MOVEM A,E.VAL+1(TB) ; SAVE VAL DECL + MOVSI A,TDCLI + MOVEM A,E.VAL(TB) ; SET ITS TYPE + JRST APRSU2 + + +APRSU9: CAME B,[ASCII /TUPLE/] + JRST MPD + MOVEM 0,(P) ; SAVE FLAGS + HRRZ A,(A) ; CDR DECLS + MOVEM A,E.DECL+1(TB) + HRRZ B,(A) + JUMPN B,MPD ; LOSER + PUSH P,[0] ; COUNT ELEMENTS IN TUPLE + +APRTUP: PUSHJ P,@E.ARG+1(TB) ; GOBBLE ARGS + JRST APRTPD ; DONE + PUSH TP,A + PUSH TP,B + AOS (P) ; COUNT IT + JRST APRTUP ; AND GO + +APRTPD: POP P,C ; GET COUNT + ADDM C,E.CNT+1(TB) ; UPDATE MAIN COUNT + ASH C,1 ; # OF WORDS + HRLI C,TINFO ; BUILD FENCE POST + PUSH TP,C + PUSHJ P,TBTOTP ; GEN REL OFFSET TO TOP + PUSH TP,D + HRROI D,-1(TP) ; POINT TO TOP + SUBI D,(C) ; TO BASE + TLC D,-1(C) + MOVSI C,TARGS ; BUILD TYPE WORD + HLR C,OTBSAV(TB) + MOVE A,E.DECL+1(TB) + MOVE B,1(A) + HLLZ A,(A) ; TYPE/VAL + JSP E,CHKAB ; CHECK + PUSHJ P,TMATCH ; GOTO TYPE CHECKER + JRST WTYP + + SUB TP,[2,,2] ; REMOVE FENCE POST + +APRDON: SUB P,[1,,1] ; FLUSH CRUFT + MOVE A,E.CNT+1(TB) ; GET # OF ARGS + MOVE B,E.FCN+1(TB) + GETYP 0,E.FCN(TB) ; COULD BE ENTRY + MOVEI C,(TB) ; PREPARE TO BLT DOWN + HRLI C,E.TSUB+2(C) + BLT C,-E.TSUB+2(TP) + SUB TP,[E.TSUB+2,,E.TSUB+2] + CAIE 0,TRSUBR + JRST APNDN1 + .ACALL A,(B) ; CALL THE RSUBR + JRST PFINIS + + + +APRSU4: MOVEM 0,(P) ; SAVE FLAGS + MOVE B,1(A) ; GET DECL + HLLZ A,(A) + JSP E,CHKAB + MOVE 0,(P) ; RESTORE FLAGS + PUSH TP,A + PUSH TP,B ; AND SAVE + SKIPL E.ARG+1(TB) ; ALREADY EVAL'D + TRZN 0,F.QUO + JRST APREVA ; MUST EVAL ARG + MOVEM 0,(P) + HRRZ C,@E.FRM+1(TB) ; GET ARG? + TRNE 0,F.OPT ; OPTIONAL + JUMPE C,APRDN + JUMPE C,TFA ; NO, TOO FEW ARGS + MOVEM C,E.FRM+1(TB) + HLLZ A,(C) ; GET ARG + MOVE B,1(C) + JSP E,CHKAB ; CHECK THEM + +APRTYC: MOVE C,A ; SET UP FOR TMATCH + MOVE D,B + EXCH B,(TP) + EXCH A,-1(TP) ; SAVE STUFF +APRS11: PUSHJ P,TMATCH ; CHECK TYPE + JRST WTYP + + MOVE 0,(P) ; RESTORE FLAGS + TRZ 0,F.STR + AOS E.CNT+1(TB) + JRST APRSU2 ; AND GO ON + +APREVA: PUSHJ P,@E.ARG+1(TB) ; EVAL ONE + TDZA C,C ; C=0 ==> NONE LEFT + MOVEI C,1 + MOVE 0,(P) ; FLAGS + JUMPN C,APRTYC ; GO CHECK TYPE +APRDN: SUB TP,[2,,2] ; FLUSH DECL + TRNE 0,F.OPT ; OPTIONAL? + JRST APRDON ; ALL DONE + JRST TFA + +APRSU3: TRNE 0,F.STR ; END IN STRING? + JRST MPD + PUSHJ P,@E.ARG+1(TB) ; SEE IF ANYMORE ARGS + JRST APRDON + JRST TMA + + +; STANDARD ARGUMENT GETTERS USED IN APPLYING THINGS + +ARGCDR: HRRZ C,@E.FRM+1(TB) ; POINT TO ARGLIST (NOTE: POINTS 1 BEFORE WHERE ARG IS) + JUMPE C,CPOPJ ; LEAVE IF DONE + MOVEM C,E.FRM+1(TB) + GETYP 0,(C) ; GET TYPE OF ARG + CAIN 0,TSEG + JRST ARGCD1 ; SEG MENT HACK + PUSHJ P,FASTEV + JRST CPOPJ1 + +ARGCD1: PUSH TP,$TFORM ; PRETEND WE ARE A FORM + PUSH TP,1(C) + MCALL 1,EVAL + MOVEM A,E.SEG(TB) + MOVEM B,E.SEG+1(TB) + PUSHJ P,TYPSEG ; GET SEG TYPE CODE + HRRM C,E.ARG(TB) ; SAVE IT IN OBSCCURE PLACE + MOVE C,[SETZ SGARG] + MOVEM C,E.ARG+1(TB) ; SET NEW ARG GETTER + +; FALL INTO SEGARG + +SGARG: INTGO + HRRZ C,E.ARG(TB) ; SEG CODE TO C + MOVE D,E.SEG+1(TB) + MOVE A,E.SEG(TB) + MOVEM A,DSTO(PVP) + PUSHJ P,NXTLM ; GET NEXT ELEMENT + JRST SEGRG1 ; DONE + MOVEM D,E.SEG+1(TB) + MOVE D,DSTO(PVP) ; KEEP TYPE WINNING + MOVEM D,E.SEG(TB) + SETZM DSTO(PVP) + JRST CPOPJ1 ; RETURN + +SEGRG1: SETZM DSTO(PVP) + MOVEI C,ARGCDR + MOVEM C,E.ARG+1(TB) ; RESET ARG GETTER + JRST ARGCDR + +; ARGUMENT GETTER FOR APPLY + +APLARG: INTGO + SKIPL A,E.FRM+1(TB) ; ANY ARGS LEFT + POPJ P, ; NO, EXIT IMMEDIATELY + ADD A,[2,,2] + MOVEM A,E.FRM+1(TB) + MOVE B,-1(A) ; RET NEXT ARG + MOVE A,-2(A) + JRST CPOPJ1 + +; STACKFORM ARG GETTER + +EVALRG: SKIPN C,@E.FRM+1(TB) ; ANY FORM? + POPJ P, + PUSHJ P,FASTEV + GETYP A,A ; CHECK FOR FALSE + CAIN A,TFALSE + POPJ P, + MOVE C,E.FRM+1(TB) ; GET OTHER FORM + PUSHJ P,FASTEV + JRST CPOPJ1 + + +; HERE TOO APPLY NUMBERS + +APNUM: PUSHJ P,PSH4ZR ; TP SLOSTS + SKIPN A,E.EXTR(TB) ; FUNNY ARG? + JRST APNUM1 ; NOPE + MOVE B,E.EXTR+1(TB) ; GET ARG + JRST APNUM2 + +APNUM1: PUSHJ P,@E.ARG+1(TB) ; GET ARG + JRST TFA +APNUM2: PUSH TP,A + PUSH TP,B + PUSH TP,E.FCN(TB) + PUSH TP,E.FCN+1(TB) + PUSHJ P,@E.ARG+1(TB) + JRST .+2 + JRST TMA + PUSHJ P,BLTDN ; FLUSH JUNK + MCALL 2,NTH + POPJ P, + +; HERE TO APPLY SUSSMAN FUNARGS + +APFUNARG: + + SKIPN C,E.FCN+1(TB) + JRST FUNERR + HRRZ D,(C) ; MUST BE AT LEAST 2 LONG + JUMPE D,FUNERR + GETYP 0,(D) ; CHECK FOR LIST + CAIE 0,TLIST + JRST FUNERR + HRRZ 0,(D) ; SHOULD BE END + JUMPN 0,FUNERR + GETYP 0,(C) ; 1ST MUST BE FCN + CAIE 0,TEXPR + JRST FUNERR + SKIPN C,1(C) + JRST NOBODY + PUSHJ P,APEXPF ; BIND THE ARGS AND AUX'S + HRRZ C,RE.FCN+1(TB) ; GET BODY OF FUNARG + MOVE B,1(C) ; GET FCN + MOVEM B,RE.FCN+1(TB) ; AND SAVE + HRRZ C,(C) ; CDR FUNARG BODY + MOVE C,1(C) + MOVSI 0,TLIST ; SET UP TYPE + MOVEM 0,CSTO(PVP) ; FOR INTS TO WIN + +FUNLP: INTGO + JUMPE C,DOF ; RUN IT + GETYP 0,(C) + CAIE 0,TLIST ; BETTER BE LIST + JRST FUNERR + PUSH TP,$TLIST + PUSH TP,C + PUSHJ P,NEXTDC ; GET POSSIBILITY + JRST FUNERR ; LOSER + CAIE A,2 + JRST FUNERR + HRRZ B,(B) ; GET TO VALUE + MOVE C,(TP) + SUB TP,[2,,2] + PUSH TP,BNDA + PUSH TP,E + HLLZ A,(B) ; GET VAL + MOVE B,1(B) + JSP E,CHKAB ; HACK DEFER + PUSHJ P,PSHAB4 ; PUT VAL IN + HRRZ C,(C) ; CDR + JUMPN C,FUNLP + +; HERE TO RUN FUNARG + +DOF: SETZM CSTO(PVP) ; DONT CONFUSE GC + PUSHJ P,SPECBIND ; BIND 'EM UP + JRST RUNFUN + + + +; HERE TO DO MACROS + +APMACR: HRRZ E,OTBSAV(TB) + HRRZ E,PCSAV(E) ; SEE WHERE FROM + CAIN E,AEVAL3 ; SKIP IF NOT RIGHT + JRST APMAC1 + SKIPG E.ARG+1(TB) ; SKIP IF REAL FORM EXISTS + JRST BADMAC + MOVE A,E.FRM(TB) + MOVE B,E.FRM+1(TB) + SUB TP,[E.EXTR+2,,E.EXTR+2] ; FLUSH JUNK + PUSH TP,A + PUSH TP,B + MCALL 1,EXPAND ; EXPAND THE MACRO + PUSH TP,A + PUSH TP,B + MCALL 1,EVAL ; EVAL THE RESULT + POPJ P, + +APMAC1: MOVE C,E.FCN+1(TB) ; GET MACRO BODY + GETYP A,(C) + MOVE B,1(C) + MOVSI A,(A) + JSP E,CHKAB ; FIX DEFERS + MOVEM A,E.FCN(TB) + MOVEM B,E.FCN+1(TB) + JRST APLDIX + +; HERE TO APPLY EXPRS (FUNCTIONS) + +APEXPR: PUSHJ P,APEXP ; BIND ARGS AND AUX'S +RUNFUN: HRRZ A,RE.FCN(TB) ; AMOUNT OF FCN TO SKIP + MOVEI C,RE.FCN+1(TB) ; POINT TO FCN + HRRZ C,(C) ; SKIP SOMETHING + SOJGE A,.-1 ; UNTIL 1ST FORM + MOVEM C,RE.FCN+1(TB) ; AND STORE + JRST DOPROG ; GO RUN PROGRAM + +APEXP: SKIPN C,E.FCN+1(TB) ; CHECK FRO BODY + JRST NOBODY +APEXPF: PUSH P,[0] ; COUNT INIT CRAP + ADD TP,[XP.TMP,,XP.TMP] ; SLOTS FOR HACKING + SKIPL TP + PUSHJ P,TPOVFL + SETZM 1-XP.TMP(TP) ; ZERO OUT + MOVEI A,-XP.TMP+2(TP) + HRLI A,-1(A) + BLT A,(TP) ; ZERO SLOTS + PUSHJ P,CARATC ; SEE IF HEWITT ATOM EXISTS + JRST APEXP1 ; NO, GO LOOK FOR ARGLIST + MOVEM E,E.HEW+1(TB) ; SAVE ATOM + MOVSM 0,E.HEW(TB) ; AND TYPE + AOS (P) ; COUNT HEWITT ATOM +APEXP1: GETYP 0,(C) ; LOOK AT NEXT THING + CAIE 0,TLIST ; BETTER BE LIST!!! + JRST MPD.0 ; LOSE + MOVE B,1(C) ; GET LIST + MOVEM B,E.ARGL+1(TB) ; SAVE + MOVSM 0,E.ARGL(TB) ; WITH TYPE + HRRZ C,(C) ; CDR THE FCN + JUMPE C,NOBODY ; BODYLESS FCN + GETYP 0,(C) ; SEE IF DCL LIST SUPPLIED + CAIE 0,TDECL + JRST APEXP2 ; NO, START PROCESSING ARGS + AOS (P) ; COUNT DCL + MOVE B,1(C) + MOVEM B,E.DECL+1(TB) + MOVSM 0,E.DECL(TB) + HRRZ C,(C) ; CDR ON + JUMPE C,NOBODY + + ; CHECK FOR EXISTANCE OF EXTRA ARG + +APEXP2: POP P,A ; GET COUNT + HRRM A,E.FCN(TB) ; AND SAVE + SKIPN E.EXTR(TB) ; SKIP IF FUNNY EXTRA ARG EXISTS + JRST APEXP3 + MOVE 0,[SETZ EXTRGT] + EXCH 0,E.ARG+1(TB) + HRRM 0,E.ARG(TB) ; SAVE OLD GETTER AROUND + +; FALL THROUGH + +; LOOK FOR "BIND" DECLARATION + +APEXP3: PUSHJ P,UNPROG ; UNASSIGN LPROG IF NEC +APXP3A: SKIPN A,E.ARGL+1(TB) ; GET ARGLIST + JRST APEXP4 ; NONE, VERIFY NONE WERE GIVEN + PUSHJ P,NXTDCL ; SEE IF A DECL IS THERE + JRST BNDRG ; NO, GO BIND NORMAL ARGS + HRRZ C,(A) ; CDR THE DCLS + CAME B,[ASCII /BIND/] + JRST CH.CAL ; GO LOOK FOR "CALL" + PUSHJ P,CARTMC ; MUST BE AN ATOM + MOVEM C,E.ARGL+1(TB) ; AND SAVE CDR'D ARGS + PUSHJ P,MAKENV ; GENERATE AN ENVIRONMENT + PUSHJ P,PSBND1 ; PUSH THE BINDING AND CHECK THE DCL + JRST APXP3A ; IN CASE <"BIND" B "BIND" C...... + + +; LOOK FOR "CALL" DCL + +CH.CAL: CAME B,[ASCII /CALL/] + JRST CHOPT ; TRY SOMETHING ELSE + SKIPG E.ARG+1(TB) ; DONT SKIP IF CANT WIN + JRST MPD.2 + PUSHJ P,CARTMC ; BETTER BE AN ATOM + MOVEM C,E.ARGL+1(TB) + MOVE A,E.FRM(TB) ; RETURN FORM + MOVE B,E.FRM+1(TB) + PUSHJ P,PSBND1 ; BIND AND CHECK + JRST APEXP5 + +; BIND NORMAL ARGS BY CALLING BNDEM1, RETURNS WHEN ALL DONE + +BNDRG: PUSHJ P,BNDEM1 ; GO BIND THEM UP + TRNN A,4 ; SKIP IF HIT A DCL + JRST APEXP4 ; NOT A DCL, MUST BE DONE + +; LOOK FOR "OPTIONAL" DECLARATION + +CHOPT: CAME B,[+1] + JRST CHREST ; TRY TUPLE/ARGS + MOVEM C,E.ARGL+1(TB) ; SAVE RESTED ARGLIST + PUSHJ P,BNDEM2 ; DO ALL SUPPLIED OPTIONALS + TRNN A,4 ; SKIP IF NEW DCL READ + JRST APEXP4 + +; CHECK FOR "ARGS" DCL + +CHREST: CAME B,[ASCII /ARGS/] + JRST CHRST1 ; GO LOOK FOR "TUPLE" + SKIPGE E.ARG+1(TB) ; SKIP IF LEGAL + JRST MPD.3 + PUSHJ P,CARTMC ; GOBBLE ATOM + MOVEM C,E.ARGL+1(TB) ; SAVE CDR'D ARG + HRRZ B,@E.FRM+1(TB) ; GET ARG LIST + MOVSI A,TLIST ; GET TYPE + PUSHJ P,PSBND1 + JRST APEXP5 + +; HERE TO CHECK FOR "TUPLE" + +CHRST1: CAME B,[ASCII /TUPLE/] + JRST APXP10 + PUSHJ P,CARTMC ; GOBBLE ATOM + MOVEM C,E.ARGL+1(TB) + SETZB A,B + PUSHJ P,PSHBND ; SET UP BINDING + SETZM E.CNT+1(TB) ; ZERO ARG COUNTER + +TUPLP: PUSHJ P,@E.ARG+1(TB) ; GET AN ARG + JRST TUPDON ; FINIS + AOS E.CNT+1(TB) + PUSH TP,A + PUSH TP,B + JRST TUPLP + +TUPDON: PUSHJ P,MAKINF ; MAKE INFO CELL + PUSH TP,$TINFO ; FENCE POST TUPLE + PUSHJ P,TBTOTP + ADDI D,TM.OFF ; COMPENSATE FOR MOVEMENT + PUSH TP,D + MOVE C,E.CNT+1(TB) ; GET COUNT + ASH C,1 ; TO WORDS + HRRM C,-1(TP) ; INTO FENCE POST + MOVEI B,-TM.OFF-1(TP) ; SETUP ARG POINTER + SUBI B,(C) ; POINT TO BASE OF TUPLE + MOVNS C ; FOR AOBJN POINTER + HRLI B,(C) ; GOOD ARGS POINTER + MOVEM A,TM.OFF-4(B) ; STORE + MOVEM B,TM.OFF-3(B) + + +; CHECK FOR VALID ENDING TO ARGS + +APEXP5: PUSHJ P,NEXTD ; READ NEXT THING IN ARGLIST + JRST APEXP8 ; DONE + TRNN A,4 ; SKIP IF DCL + JRST MPD.4 ; LOSER +APEXP7: MOVSI A,-NWINS ; CHECK FOR A WINNER + CAME B,WINRS(A) + AOBJN A,.-1 + JUMPE A,MPD.6 ; NOT A WINNER + +; HERE TO BLT THE WORLD DOWN ON TOP OF ALL THE USELESS TEMPS + +APEXP8: MOVE 0,E.HEW+1(TB) ; GET HEWITT ATOM + MOVE E,E.FCN(TB) ; SAVE COUNTER + MOVE C,E.FCN+1(TB) ; FCN + MOVE B,E.ARGL+1(TB) ; ARG LIST + MOVE D,E.DECL+1(TB) ; AND DCLS + MOVEI A,R.TMP(TB) ; SET UP BLT + HRLI A,TM.OFF(A) + BLT A,-TM.OFF(TP) ; BLLLLLLLLLLLLLT + SUB TP,[TM.OFF,,TM.OFF] ; FLUSH CRUFT + MOVEM E,RE.FCN(TB) + MOVEM C,RE.FCN+1(TB) + MOVEM B,RE.ARGL+1(TB) + MOVE E,TP + PUSH TP,$TATOM + PUSH TP,0 + PUSH TP,$TDECL + PUSH TP,D + GETYP A,-5(TP) ; TUPLE ON TOP? + CAIE A,TINFO ; SKIP IF YES + JRST APEXP9 + HRRZ A,-5(TP) ; GET SIZE + ADDI A,2 + HRLI A,(A) + SUB E,A ; POINT TO BINDINGS + SKIPE C,(TP) ; IF DCL + PUSHJ P,CHKDCL ; CHECK TYPE SPEC ON TUPLE +APEXP9: PUSHJ P,USPCBE ; DO ACTUAL BINDING + + MOVE E,-2(TP) ; RESTORE HEWITT ATOM + MOVE D,(TP) ; AND DCLS + SUB TP,[4,,4] + + JRST AUXBND ; GO BIND AUX'S + +; HERE TO VERIFY CHECK IF ANY ARGS LEFT + +APEXP4: PUSHJ P,@E.ARG+1(TB) + JRST APEXP8 ; WIN + JRST TMA ; TOO MANY ARGS + +APXP10: PUSH P,B + PUSHJ P,@E.ARG+1(TB) + JRST .+2 + JRST TMA + POP P,B + JRST APEXP7 + +; LIST OF POSSIBLE TERMINATING NAMES + +WINRS: +AS.ACT: ASCII /ACT/ +AS.NAM: ASCII /NAME/ +AS.AUX: ASCII /AUX/ +AS.EXT: ASCII /EXTRA/ +NWINS==.-WINRS + + +; HERE TO BIND AUX VARIABLES FOR PROGS AND FCNS + +AUXBND: PUSH P,E ; SAVE HEWITT ATOM ( WILL PUT ON MARKED STACK + ; WHEN NECESSARY) + PUSH P,D ; SAME WITH DCL LIST + PUSH P,[-1] ; FLAG SAYING WE ARE FCN + SKIPN C,RE.ARG+1(TB) ; GET ARG LIST + JRST AUXDON + GETYP 0,(C) ; GET TYPE + CAIE 0,TDEFER ; SKIP IF CHSTR + MOVMS (P) ; SAY WE ARE IN OPTIONALS + JRST AUXB1 + +PRGBND: PUSH P,E + PUSH P,D + PUSH P,[0] ; WE ARE IN AUXS + +AUXB1: HRRZ C,RE.ARG+1(TB) ; POINT TO ARGLIST + PUSHJ P,NEXTDC ; GET NEXT THING OFF OF ARG LIST + JRST AUXDON + TRNE A,4 ; SKIP IF SOME KIND OF ATOM + JRST TRYDCL ; COUDL BE DCL + TRNN A,1 ; SKIP IF QUOTED + JRST AUXB2 + SKIPN (P) ; SKIP IF QUOTED OK + JRST MPD.11 +AUXB2: PUSHJ P,PSHBND ; SET UP BINDING + PUSH TP,$TDECL ; SAVE HEWITT ATOM + PUSH TP,-1(P) + PUSH TP,$TATOM ; AND DECLS + PUSH TP,-2(P) + + TRNN A,2 ; SKIP IF INIT VAL EXISTS + JRST AUXB3 ; NO, USE UNBOUND + +; EVALUATE EXPRESSION + + HRRZ C,(B) ; CDR ATOM OFF + +; CHECK FOR SPECIAL FORMS + + GETYP 0,(C) ; GET TYPE OF GOODIE + CAIE 0,TFORM ; SMELLS LIKE A FORM + JRST AUXB13 + HRRZ D,1(C) ; GET 1ST ELEMENT + GETYP 0,(D) ; AND ITS VAL + CAIE 0,TATOM ; FEELS LIKE THE RIGHT FORM + JRST AUXB13 + + MOVE 0,1(D) ; GET THE ATOM + CAME 0,MQUOTE TUPLE + CAMN 0,MQUOTE ITUPLE + JRST DOTUPL ; SURE GLAD I DIDN'T STEP IN THAT FORM + + +AUXB13: PUSHJ P,FASTEV +AUXB14: MOVE E,TP +AUXB4: MOVEM A,-7(E) ; STORE VAL IN BINDING + MOVEM B,-6(E) + +; HERE TO CHECK AGAINST DECLARATIONS AND COMPLETE THE BINDING + +AUXB5: SUB E,[4,,4] ; POINT TO BINDING TOP + SKIPE C,-2(TP) ; POINT TO DECLARATINS + PUSHJ P,CHKDCL ; CHECK IT + PUSHJ P,USPCBE ; AND BIND UP + SKIPE C,RE.ARG+1(TB) ; CDR DCLS + HRRZ C,(C) ; IF ANY TO CDR + MOVEM C,RE.ARG+1(TB) + MOVE A,(TP) ; NOW PUT HEWITT ATOM AND DCL AWAY + MOVEM A,-2(P) + MOVE A,-2(TP) + MOVEM A,-1(P) + SUB TP,[4,,4] ; FLUSH SLOTS + JRST AUXB1 + + +AUXB3: MOVNI B,1 + MOVSI A,TUNBOU + JRST AUXB14 + + + +; HERE TO HANDLE "CALLS" TO TUPLE AND ITUPLE + +DOTUPL: PUSH TP,$TLIST ; SAVE THE MAGIC FORM + PUSH TP,D + CAME 0,MQUOTE TUPLE + JRST DOITUP ; DO AN ITUPLE + +; FALL INTO A TUPLE PUSHING LOOP + +DOTUP1: HRRZ C,@(TP) ; CDR THE FORM + JUMPE C,ATUPDN ; FINISHED + MOVEM C,(TP) ; SAVE CDR'D RESULT + GETYP 0,(C) ; CHECK FOR SEGMENT + CAIN 0,TSEG + JRST DTPSEG ; GO PULL IT APART + PUSHJ P,FASTEV ; EVAL IT + PUSHJ P,CNTARG ; PUSH IT UP AND COUNT THEM + JRST DOTUP1 + +; HERE WHEN WE FINISH + +ATUPDN: SUB TP,[2,,2] ; FLUSH THE LIST + ASH E,1 ; E HAS # OF ARGS DOUBLE IT + MOVEI D,(TP) ; FIND BASE OF STACK AREA + SUBI D,(E) + MOVSI C,-3(D) ; PREPARE BLT POINTER + BLT C,C ; HEWITT ATOM AND DECL TO 0,A,B,C + +; NOW PREPEARE TO BLT TUPLE DOWN + + MOVEI D,-3(D) ; NEW DEST + HRLI D,4(D) ; SOURCE + BLT D,-4(TP) ; SLURP THEM DOWN + + HRLI E,TINFO ; SET UP FENCE POST + MOVEM E,-3(TP) ; AND STORE + PUSHJ P,TBTOTP ; GET OFFSET + ADDI D,3 ; FUDGE FOR NOT AT TOP OF STACK + MOVEM D,-2(TP) + MOVEM 0,-1(TP) ; RESTORE HEW ATOM AND DECLS + MOVEM A,(TP) + PUSH TP,B + PUSH TP,C + + PUSHJ P,MAKINF ; MAKE 1ST WORD OF FUNNYS + + HRRZ E,-5(TP) ; RESTORE WORDS OF TUPLE + HRROI B,-5(TP) ; POINT TO TOP OF TUPLE + SUBI B,(E) ; NOW BASE + TLC B,-1(E) ; FIX UP AOBJN PNTR + ADDI E,2 ; COPNESATE FOR FENCE PST + HRLI E,(E) + SUBM TP,E ; E POINT TO BINDING + JRST AUXB4 ; GO CLOBBER IT IN + + +; HERE TO HANDLE SEGMENTS IN THESE FUNNY FORMS + +DTPSEG: PUSH TP,$TFORM ; SAVE THE HACKER + PUSH TP,1(C) + MCALL 1,EVAL ; AND EVALUATE IT + MOVE D,B ; GET READY FOR A SEG LOOP + MOVEM A,DSTO(PVP) + PUSHJ P,TYPSEG ; TYPE AND CHECK IT + +DTPSG1: INTGO ; DONT BLOW YOUR STACK + PUSHJ P,NXTLM ; ELEMENT TO A AND B + JRST DTPSG2 ; DONE + PUSHJ P,CNTARG ; PUSH AND COUNT + JRST DTPSG1 + +DTPSG2: SETZM DSTO(PVP) + JRST DOTUP1 ; REST OF ARGS STILL TO DO + +; HERE TO HACK + +DOITUP: HRRZ C,@(TP) ; GET COUNT FILED + JUMPE C,TUPTFA + MOVEM C,(TP) + PUSHJ P,FASTEV ; EVAL IT + GETYP 0,A + CAIE 0,TFIX + JRST WTY1TP + + JUMPL B,BADNUM + + HRRZ C,@(TP) ; GET EXP TO EVAL + MOVEI 0,0 ; DONT LOSE IN 1 ARG CASE + HRRZ 0,(C) ; VERIFY WINNAGE + JUMPN 0,TUPTMA ; TOO MANY + + JUMPE B,DOIDON + PUSH P,B ; SAVE COUNT + PUSH P,B + JUMPE C,DOILOS + PUSHJ P,FASTEV ; EVAL IT ONCE + MOVEM A,-1(TP) + MOVEM B,(TP) + +DOILP: INTGO + PUSH TP,-1(TP) + PUSH TP,-1(TP) + MCALL 1,EVAL + PUSHJ P,CNTRG + SOSLE (P) + JRST DOILP + +DOIDO1: MOVE B,-1(P) ; RESTORE COUNT + SUB P,[2,,2] + +DOIDON: MOVEI E,(B) + JRST ATUPDN + +; FOR CASE OF NO EVALE + +DOILOS: SUB TP,[2,,2] +DOILLP: INTGO + PUSH TP,[0] + PUSH TP,[0] + SOSL (P) + JRST DOILLP + JRST DOIDO1 + +; ROUTINE TO PUSH NEXT TUPLE ELEMENT + +CNTARG: AOS E,-1(TP) ; KEEP ARG COUNT UP TO DATE IN E +CNTRG: EXCH A,-1(TP) ; STORE ELEM AND GET SAVED + EXCH B,(TP) + PUSH TP,A + PUSH TP,B + POPJ P, + + +; DUMMY TUPLE AND ITUPLE + +MFUNCTION TUPLE,SUBR + + ENTRY + PUSH TP,$TATOM + PUSH TP,EQUOTE NOT-IN-ARG-LIST + JRST CALER1 + +MFUNCTIO ITUPLE,SUBR + JRST TUPLE + + +; PROCESS A DCL IN THE AUX VAR LISTS + +TRYDCL: SKIPN (P) ; SKIP IF NOT IN AUX'S + JRST AUXB7 + CAME B,AS.AUX ; "AUX" ? + CAMN B,AS.EXT ; OR "EXTRA" + JRST AUXB9 ; YES + CAME B,[ASCII /TUPLE/] + JRST AUXB10 + PUSHJ P,MAKINF ; BUILD EMPTY TUPLE + MOVEI B,1(TP) + PUSH TP,$TINFO ; FENCE POST + PUSHJ P,TBTOTP + PUSH TP,D +AUXB6: HRRZ C,(C) ; CDR PAST DCL + MOVEM C,RE.ARG+1(TB) +AUXB8: PUSHJ P,CARTMC ; GET ATOM +AUXB12: PUSHJ P,PSHBND ; UP GOES THE BINDING + PUSH TP,$TATOM ; HIDE HEWITT ATOM AND DCL + PUSH TP,-1(P) + PUSH TP,$TDECL + PUSH TP,-2(P) + MOVE E,TP + JRST AUXB5 + +; CHECK FOR ARGS + +AUXB10: CAME B,[ASCII /ARGS/] + JRST AUXB7 + MOVEI B,0 ; NULL ARG LIST + MOVSI A,TLIST + JRST AUXB6 ; GO BIND + +AUXB9: SETZM (P) ; NOW READING AUX + HRRZ C,(C) + MOVEM C,RE.ARG+1(TB) + JRST AUXB1 + +; CHECK FOR NAME/ACT + +AUXB7: CAME B,AS.NAM + CAMN B,AS.ACT + JRST .+2 + JRST MPD.12 ; LOSER + HRRZ C,(C) ; CDR ON + HRRZ 0,(C) ; BETTER BE END + JUMPN 0,MPD.13 + PUSHJ P,CARTMC ; FORCE ATOM READ + SETZM RE.ARG+1(TB) +AUXB11: PUSHJ P,MAKACT ; MAKE ACTIVATION + JRST AUXB12 ; AND BIND IT + + +; DONE BIND HEWITT ATOM IF NECESARY + +AUXDON: SKIPN E,-2(P) + JRST AUXD1 + SETZM -2(P) + JRST AUXB11 + +; FINISHED, RETURN + +AUXD1: SUB P,[3,,3] + POPJ P, + + +; MAKE AN ACTIVATION OR ENVIRONMNENT + +MAKACT: MOVEI B,(TB) + MOVSI A,TACT +MAKAC1: HRRI A,PVLNT*2+1(PVP) ; POINT TO PROCESS + HLL B,OTBSAV(B) ; GET TIME + POPJ P, + +MAKENV: MOVSI A,TENV + HRRZ B,OTBSAV(TB) + JRST MAKAC1 + +; SEVERAL USEFUL LITTLE ROUTINES FOR HACKING THIS STUFF + +; CARAT/CARATC/CARATM/CARTMC ALL LOOK FOR THE NEXT ATOM + +CARAT: HRRZ C,E.ARGL+1(TB) ; PICK UP ARGLIST +CARATC: JUMPE C,CPOPJ ; FOUND + GETYP 0,(C) ; GET ITS TYPE + CAIE 0,TATOM +CPOPJ: POPJ P, ; RETURN, NOT ATOM + MOVE E,1(C) ; GET ATOM + HRRZ C,(C) ; CDR DCLS + JRST CPOPJ1 + +CARATM: HRRZ C,E.ARGL+1(TB) +CARTMC: PUSHJ P,CARATC + JRST MPD.7 ; REALLY LOSE + POPJ P, + + +; SUBROUTINES TO PUSH BINDINGS ETC. UP ON THE STACK + +PSBND1: PUSHJ P,PSHBND ; PUSH THEBINDING + JRST CHDCL ; NOW CHECK IT AGAINST DECLARATION + +PSHBND: SKIPGE SPCCHK ; SKIP IF NORMAL SPECIAL + PUSH TP,BNDA1 ; ATOM IN E + SKIPL SPCCHK ; SKIP IF NORMAL UNSPEC OR NO CHECK + PUSH TP,BNDA + PUSH TP,E ; PUSH IT +PSHAB4: PUSH TP,A + PUSH TP,B + PUSH TP,[0] + PUSH TP,[0] + POPJ P, + +; ROUTINE TO PUSH 4 0'S + +PSH4ZR: SETZB A,B + JRST PSHAB4 + + +; EXTRRA ARG GOBBLER + +EXTRGT: HRRZ A,E.ARG(TB) ; RESET SLOT + CAIE A,ARGCDR ; IF NOT ARGCDR + TLO A,400000 ; SET FLAG + MOVEM A,E.ARG+1(TB) + MOVE A,E.EXTR(TB) ; RET ARG + MOVE B,E.EXTR+1(TB) + JRST CPOPJ1 + +; CHECK A/B FOR DEFER + +CHKAB: GETYP 0,A + CAIE 0,TDEFER ; SKIP IF DEFER + JRST (E) + MOVE A,(B) + MOVE B,1(B) ; GET REAL THING + JRST (E) +; IF DECLARATIONS EXIST, DO THEM + +CHDCL: MOVE E,TP +CHDCLE: SKIPN C,E.DECL+1(TB) + POPJ P, + JRST CHKDCL + +; ROUTINE TO READ NEXT THING FROM ARGLIST + +NEXTD: HRRZ C,E.ARGL+1(TB) ; GET ARG LIST +NEXTDC: JUMPE C,CPOPJ + PUSHJ P,CARATC ; TRY FOR AN ATOM + JRST NEXTD1 ; NO + MOVEI A,0 ; SET FLAG + JRST CPOPJ1 + +NEXTD1: CAIE 0,TFORM ; FORM? + JRST NXT.L ; COULD BE LIST + PUSHJ P,CHQT ; VERIFY 'ATOM + MOVEI A,1 + JRST CPOPJ1 + +NXT.L: CAIE 0,TLIST ; COULD BE (A ) OR ('A ) + JRST NXT.S ; BETTER BE A DCL + PUSHJ P,LNT.2 ; VERIFY LENGTH IS 2 + JRST MPD.8 + CAIE 0,TATOM ; TYPE OF 1ST RET IN 0 + JRST LST.QT ; MAY BE 'ATOM + MOVE E,1(B) ; GET ATOM + MOVEI A,2 + JRST CPOPJ1 +LST.QT: CAIE 0,TFORM ; FORM? + JRST MPD.9 ; LOSE + PUSH P,C + MOVEI C,(B) ; VERIFY 'ATOM + PUSHJ P,CHQT + MOVEI B,(C) ; POINT BACK TO LIST + POP P,C + MOVEI A,3 ; CODE + JRST CPOPJ1 + +NXT.S: MOVEI A,(C) ; LET NXTDCL FIND OUT + PUSHJ P,NXTDCL + JRST MPD.3 ; LOSER + MOVEI A,4 ; SET DCL READ FLAG + JRST CPOPJ1 + +; ROUTINE TO CHECK LENGTH OF LIST/FORM FOR BEING 2 + +LNT.2: HRRZ B,1(C) ; GET LIST/FORM + JUMPE B,CPOPJ + HRRZ B,(B) + JUMPE B,CPOPJ + HRRZ B,(B) ; BETTER END HERE + JUMPN B,CPOPJ + HRRZ B,1(C) ; LIST BACK + GETYP 0,(B) ; TYPE OF 1ST ELEMENT + JRST CPOPJ1 + +; ROUTINE TO VERIFY FORM IS 'ATOM AND RET ATOM + +CHQT: PUSHJ P,LNT.2 ; 1ST LENGTH CHECK + JRST MPD.5 + CAIE 0,TATOM + JRST MPD.5 + MOVE 0,1(B) + CAME 0,MQUOTE QUOTE + JRST MPD.5 ; BETTER BE QUOTE + HRRZ E,(B) ; CDR + GETYP 0,(E) ; TYPE + CAIE 0,TATOM + JRST MPD.5 + MOVE E,1(E) ; GET QUOTED ATOM + POPJ P, + +; ARG BINDER FOR REGULAR ARGS AND OPTIONALS + +BNDEM1: PUSH P,[0] ; REGULAR FLAG + JRST .+2 +BNDEM2: PUSH P,[1] +BNDEM: PUSHJ P,NEXTD ; GET NEXT THING + JRST CCPOPJ ; END OF THINGS + TRNE A,4 ; CHECK FOR DCL + JRST BNDEM4 + TRNE A,2 ; SKIP IF NOT (ATM ..) OR ('ATM ...) + SKIPE (P) ; SKIP IF REG ARGS + JRST .+2 ; WINNER, GO ON + JRST MPD.6 ; LOSER + SKIPGE SPCCHK + PUSH TP,BNDA1 ; SAVE ATOM + SKIPL SPCCHK + PUSH TP,BNDA + PUSH TP,E + SKIPL E.ARG+1(TB) ; SKIP IF MUST EVAL ARG + TRNN A,1 ; SKIP IF ARG QUOTED + JRST RGLARG + HRRZ D,@E.FRM+1(TB) ; GET AND CDR ARG + JUMPE D,TFACHK ; OH OH MAYBE TOO FEW ARGS + MOVEM D,E.FRM+1(TB) ; STORE WINNER + HLLZ A,(D) ; GET ARG + MOVE B,1(D) + JSP E,CHKAB ; HACK DEFER + JRST BNDEM3 ; AND GO ON + +RGLARG: PUSH P,A ; SAVE FLAGS + PUSHJ P,@E.ARG+1(TB) + JRST TFACH1 ; MAY GE TOO FEW + SUB P,[1,,1] +BNDEM3: HRRZ C,@E.ARGL+1(TB) ; CDR THHE ARGS + MOVEM C,E.ARGL+1(TB) + PUSHJ P,PSHAB4 ; PUSH VALUE AND SLOTS + PUSHJ P,CHDCL ; CHECK DCLS + JRST BNDEM ; AND BIND ON! + +; HERE WHEN ARGS RUN OUT, IF NOT OPTIONAL, GIVE TFA + +TFACH1: POP P,A +TFACHK: SUB TP,[2,,2] ; FLUSH ATOM + SKIPN (P) ; SKIP IF OPTIONALS + JRST TFA +CCPOPJ: SUB P,[1,,1] + POPJ P, + +BNDEM4: HRRZ C,@E.ARGL+1(TB) ; POINT TO REST OF ARGL + JRST CCPOPJ + + +; EVALUATE LISTS, VECTORS, UNIFROM VECTORS + +EVLIST: PUSH P,[-1] ;-1 -- THIS IS A LIST + JRST EVL1 ;GO TO HACKER + +EVECT: PUSH P,[0] ;0 -- THIS IS A GENERAL VECTOR + JRST EVL1 + +EUVEC: PUSH P,[1] ;1 -- THIS IS A UNIFORM VECTOR + +EVL1: PUSH P,[0] ;PUSH A COUNTER + GETYPF A,(AB) ;GET FULL TYPE + PUSH TP,A + PUSH TP,1(AB) ;AND VALUE + +EVL2: INTGO ;CHECK INTERRUPTS + SKIPN A,1(TB) ;ANYMORE + JRST EVL3 ;NO, QUIT + SKIPL -1(P) ;SKIP IF LIST + JUMPG A,EVL3 ;JUMP IF VECTOR EMPTY + GETYPF B,(A) ;GET FULL TYPE + SKIPGE C,-1(P) ;SKIP IF NOT LIST + HLLZS B ;CLOBBER CDR FIELD + JUMPG C,EVL7 ;HACK UNIFORM VECS +EVL8: PUSH P,B ;SAVE TYPE WORD ON P + CAMN B,$TSEG ;SEGMENT? + MOVSI B,TFORM ;FAKE OUT EVAL + PUSH TP,B ;PUSH TYPE + PUSH TP,1(A) ;AND VALUE + JSP E,CHKARG ; CHECK DEFER + MCALL 1,EVAL ;AND EVAL IT + POP P,C ;AND RESTORE REAL TYPE + CAMN C,$TSEG ;SEGMENT? + JRST DOSEG ;YES, HACK IT + AOS (P) ;COUNT ELEMENT + PUSH TP,A ;AND PUSH IT + PUSH TP,B +EVL6: SKIPGE A,-1(P) ;DONT SKIP IF LIST + HRRZ B,@1(TB) ;CDR IT + JUMPL A,ASTOTB ;AND STORE IT + MOVE B,1(TB) ;GET VECTOR POINTER + ADD B,AMNT(A) ;INCR BY APPROPRIATE AMOUNT +ASTOTB: MOVEM B,1(TB) ;AND STORE BACK + JRST EVL2 ;AND LOOP BACK + +AMNT: 2,,2 ;INCR FOR GENERAL VECTOR + 1,,1 ;SAME FOR UNIFORM VECTOR + +CHKARG: GETYP A,-1(TP) + CAIE A,TDEFER + JRST (E) + HRRZS (TP) ;MAKE SURE INDIRECT WINS + MOVE A,@(TP) + MOVEM A,-1(TP) ;CLOBBER IN TYPE SLOT + MOVE A,(TP) ;NOW GET POINTER + MOVE A,1(A) ;GET VALUE + MOVEM A,(TP) ;CLOBBER IN + JRST (E) + + + +EVL7: HLRE C,A ; FIND TYPE OF UVECTOR + SUBM A,C ;C POINTS TO DOPE WORD + GETYP B,(C) ;GET TYPE + MOVSI B,(B) ;TO LH NOW + SOJA A,EVL8 ;AND RETURN TO DO EVAL + +EVL3: SKIPL -1(P) ;SKIP IF LIST + JRST EVL4 ;EITHER VECTOR OR UVECTOR + + MOVEI B,0 ;GET A NIL +EVL9: MOVSI A,TLIST ;MAKE TYPE WIN +EVL5: SOSGE (P) ;COUNT DOWN + JRST EVL10 ;DONE, RETURN + PUSH TP,$TLIST ;SET TO CALL CONS + PUSH TP,B + MCALL 2,CONS + JRST EVL5 ;LOOP TIL DONE + + +EVL4: MOVEI B,EUVECT ;UNIFORM CASE + SKIPG -1(P) ;SKIP IF UNIFORM CASE + MOVEI B,EVECTO ;NO, GENERAL CASE + POP P,A ;GET COUNT + .ACALL A,(B) ;CALL CREATOR +EVL10: GETYPF A,(AB) ; USE SENT TYPE + JRST EFINIS + + +; PROCESS SEGMENTS FOR THESE HACKS + +DOSEG: PUSHJ P,TYPSEG ; FIND WHAT IS BEING SEGMENTED + JUMPE C,LSTSEG ; CHECK END SPLICE IF LIST + +SEG3: PUSHJ P,NXTELM ; GET THE NEXTE ELEMT + JRST SEG4 ; RETURN TO CALLER + AOS (P) ; COUNT + JRST SEG3 ; TRY AGAIN +SEG4: SETZM DSTO(PVP) + JRST EVL6 + +TYPSEG: PUSHJ P,TYPSGR + JRST ILLSEG + POPJ P, + +TYPSGR: MOVEM A,DSTO(PVP) ;WILL BECOME INTERRUPTABLE WITH GOODIE IN D + GETYP A,A ; TYPE TO RH + PUSHJ P,SAT ;GET STORAGE TYPE + MOVE D,B ; GOODIE TO D + + MOVNI C,1 ; C <0 IF ILLEGAL + CAIN A,S2WORD ;LIST? + MOVEI C,0 + CAIN A,S2NWORD ;GENERAL VECTOR? + MOVEI C,1 + CAIN A,SNWORD ;UNIFORM VECTOR? + MOVEI C,2 + CAIN A,SCHSTR + MOVEI C,3 + CAIN A,SSTORE ;SPECIAL AFREE STORAGE ? + MOVEI C,2 ;TREAT LIKE A UVECTOR + CAIN A,SARGS ;ARGS TUPLE? + JRST SEGARG ;NO, ERROR + CAILE A,NUMSAT ; SKIP IF NOT TEMPLATE + JRST SEGTMP + JUMPGE C,CPOPJ1 + SETZM DSTO(PVP) ; DON'T CONFUSE AGC LATER! + POPJ P, + +SEGTMP: MOVEI C,4 + HRRM A,DSTO(PVP) ; SAVE FOR HACKERS + JRST CPOPJ1 + +SEGARG: PUSH TP,DSTO(PVP) ;PREPARE TO CHECK ARGS + PUSH TP,D + SETZM DSTO(PVP) ;TYPE NOT SPECIAL + MOVEI B,-1(TP) ;POINT TO SAVED COPY + PUSHJ P,CHARGS ;CHECK ARG POINTER + POP TP,D ;AND RESTORE WINNER + POP TP,DSTO(PVP) ;AND TYPE AND FALL INTO VECTOR CODE + MOVEI C,1 + JRST CPOPJ1 + +LSTSEG: SKIPL -1(P) ;SKIP IF IN A LIST + JRST SEG3 ;ELSE JOIN COMMON CODE + HRRZ A,@1(TB) ;CHECK FOR END OF LIST + JUMPN A,SEG3 ;NO, JOIN COMMON CODE + SETZM DSTO(PVP) ;CLOBBER SAVED GOODIES + JRST EVL9 ;AND FINISH UP + +NXTELM: INTGO + PUSHJ P,NXTLM ; GOODIE TO A AND B + POPJ P, ; DONE + PUSH TP,A + PUSH TP,B + JRST CPOPJ1 +NXTLM: XCT TESTR(C) ; SKIP IF MORE IN SEGEMNT + POPJ P, + XCT TYPG(C) ; GET THE TYPE + XCT VALG(C) ; AND VALUE + JSP E,CHKAB ; CHECK DEFERRED + XCT INCR1(C) ; AND INCREMENT TO NEXT +CPOPJ1: AOS (P) ; SKIP RETURN + POPJ P, + +; TABLES FOR SEGMENT OPERATIONS (0->LIST, 1->VECTOR/ARGS, 2->UVEC, 3->STRING) + +TESTR: SKIPN D + SKIPL D + SKIPL D + PUSHJ P,CHRDON + PUSHJ P,TM1 + +TYPG: PUSHJ P,LISTYP + GETYPF A,(D) + PUSHJ P,UTYPE + MOVSI A,TCHRS + PUSHJ P,TM2 + +VALG: MOVE B,1(D) + MOVE B,1(D) + MOVE B,(D) + PUSHJ P,1CHGT + PUSHJ P,TM3 + +INCR1: HRRZ D,(D) + ADD D,[2,,2] + ADD D,[1,,1] + PUSHJ P,1CHINC + ADD D,[1,,] + +TM1: HRRZ A,DSTO(PVP) ; GET SAT + SUBI A,NUMSAT+1 + ADD A,TD.LNT+1(TVP) + EXCH C,D + XCT (A) + HLRZ 0,C ; GET AMNT RESTED + SUB B,0 + EXCH C,D + TRNE B,-1 + AOS (P) + POPJ P, + +TM3: +TM2: HRRZ 0,DSTO(PVP) + PUSH P,C + PUSH P,D + PUSH P,E + MOVE B,D + MOVEI C,0 ; GET "1ST ELEMENT" + PUSHJ P,TMPLNT ; GET NTH IN A AND B + POP P,E + POP P,D + POP P,C + POPJ P, + + +CHRDON: HRRZ B,DSTO(PVP) ; POIT TO DOPE WORD + JUMPE B,CHRFIN + AOS (P) +CHRFIN: POPJ P, + +LISTYP: GETYP A,(D) + MOVSI A,(A) + POPJ P, +1CHGT: MOVE B,D + ILDB B,B + POPJ P, + +1CHINC: SOS DSTO(PVP) + IBP D + POPJ P, + +UTYPE: HLRE A,D + SUBM D,A + GETYP A,(A) + MOVSI A,(A) + POPJ P, + + +;COMPILER's CALL TO DOSEG +SEGMNT: PUSHJ P,TYPSEG +SEGLP1: SETZB A,B +SEGLOP: PUSHJ P,NXTELM + JRST SEGRET + AOS (P)-2 ; INCREMENT COMPILER'S COUNT + JRST SEGLOP + +SEGRET: SETZM DSTO(PVP) + POPJ P, + +SEGLST: PUSHJ P,TYPSEG + JUMPN C,SEGLS2 +SEGLS3: SETZM DSTO(PVP) + MOVSI A,TLIST +SEGLS1: SOSGE -2(P) ; START COUNT DOWN + POPJ P, + MOVEI E,(B) + POP TP,D + POP TP,C + PUSHJ P,ICONS + JRST SEGLS1 + +SEGLS2: PUSHJ P,NXTELM + JRST SEGLS4 + AOS -2(P) + JRST SEGLS2 + +SEGLS4: MOVEI B,0 + JRST SEGLS3 + + +;SPECBIND BINDS IDENTIFIERS. IT IS CALLED BY PUSHJ P,SPECBIND. +;SPECBIND IS PROVIDED WITH A CONTIGUOUS SET OF TRIPLETS ON TP. +;EACH TRIPLET IS AS FOLLOWS: +;THE FIRST ELEMENT IS THE IDENTIFIER TO BE BOUND, ITS TYPE WORD IS [TATOM,,-1], +;THE SECOND IS THE VALUE TO WHICH IT IS TO BE ASSIGNED, +;AND THE THIRD IS A PAIR OF ZEROES. + +BNDA1: TATOM,,-2 +BNDA: TATOM,,-1 +BNDV: TVEC,,-1 + +USPECBIND: + MOVE E,TP +USPCBE: PUSH P,$TUBIND + JRST .+3 + +SPECBIND: + MOVE E,TP ;GET THE POINTER TO TOP +SPECBE: PUSH P,$TBIND + ADD E,[1,,1] ;BUMP POINTER ONCE + SETZB 0,D ;CLEAR TEMPS + PUSH P,0 + MOVEI 0,(TB) ; FOR CHECKS + +BINDLP: MOVE A,-4(E) ; CHECK FOR VEC BIND + CAMN A,BNDV + JRST NONID + MOVE A,-6(E) ;GET TYPE + CAME A,BNDA1 ; FOR UNSPECIAL + CAMN A,BNDA ;NORMAL ID BIND? + CAILE 0,-6(E) ; MAKE SURE NOT GOING UNDER FRAME + JRST SPECBD + SUB E,[6,,6] ;MOVE PTR + SKIPE D ;LINK? + HRRM E,(D) ;YES -- LOBBER + SKIPN (P) ;UPDATED? + MOVEM E,(P) ;NO -- DO IT + + MOVE A,0(E) ;GET ATOM PTR + MOVE B,1(E) + PUSHJ P,ILOC ;GET LAST BINDING + MOVS A,OTBSAV (TB) ;GET TIME + HRL A,5(E) ; GET DECL POINTER + MOVEM A,4(E) ;CLOBBER IT AWAY + MOVE A,(E) ; SEE IF SPEC/UNSPEC + TRNN A,1 ; SKIP, ALWAYS SPEC + SKIPA A,-1(P) ; USE SUPPLIED + MOVSI A,TBIND + MOVEM A,(E) ;IDENTIFY AS BIND BLOCK + HRRZ C,SPBASE(PVP) ; CHECK FOR CROSS OF PROC + MOVEI A,(TP) + CAIL A,(B) ; LOSER + CAILE C,(B) ; SKIP IFF WINNER + JRST .+2 + MOVEM B,5(E) ;IN RESTORE CELLS + + MOVE C,1(E) ;GET ATOM PTR + MOVEI A,(C) + MOVEI B,0 ; FOR SPCUNP + CAIL A,HIBOT ; SKIP IF IMPURE ATOM + PUSHJ P,SPCUNP + HRRZ A,BINDID+1(PVP) ;GET PROCESS NUMBER + HRLI A,TLOCI ;MAKE LOC PTR + MOVE B,E ;TO NEW VALUE + ADD B,[2,,2] + MOVEM A,(C) ;CLOBBER ITS VALUE + MOVEM B,1(C) ;CELL + MOVE D,E ;REMEMBER LINK + JRST BINDLP ;DO NEXT + +NONID: CAILE 0,-4(E) + JRST SPECBD + SUB E,[4,,4] + SKIPE D + HRRM E,(D) + SKIPN (P) + MOVEM E,(P) + + MOVE D,1(E) ;GET PTR TO VECTOR + MOVE C,(D) ;EXCHANGE TYPES + EXCH C,2(E) + MOVEM C,(D) + + MOVE C,1(D) ;EXCHANGE DATUMS + EXCH C,3(E) + MOVEM C,1(D) + + MOVEI A,TBVL + HRLM A,(E) ;IDENTIFY BIND BLOCK + MOVE D,E ;REMEMBER LINK + JRST BINDLP + +SPECBD: SKIPE D + HRRM SP,(D) + SKIPE D,(P) + MOVE SP,D + SUB P,[2,,2] + POPJ P, + + +; HERE TO IMPURIFY THE ATOM + +SPCUNP: PUSH TP,$TSP + PUSH TP,E + PUSH TP,$TSP + PUSH TP,-1(P) ; LINK BACK IS AN SP + PUSH TP,$TSP + PUSH TP,B + MOVE B,C + PUSHJ P,IMPURIFY + MOVE 0,-2(TP) ; RESTORE LINK BACK POINTER + MOVEM 0,-1(P) + MOVE E,-4(TP) + MOVE C,B + MOVE B,(TP) + SUB TP,[6,,6] + MOVEI 0,(TB) + POPJ P, + +; ENTRY FROM COMPILER TO SET UP A BINDING + +IBIND: SUBI E,-5(SP) ; CHANGE TO PDL POINTER + HRLI E,(E) + ADD E,SP + MOVEM C,-4(E) + MOVEM A,-3(E) + MOVEM B,-2(E) + HRLOI A,TATOM + MOVEM A,-5(E) + MOVSI A,TLIST + MOVEM A,-1(E) + MOVEM D,(E) + JRST SPECB1 ; NOW BIND IT + +; "FAST CALL TO SPECBIND" + + + +; Compiler's call to SPECBIND all atom bindings, no TBVLs etc. + +SPECBND: + MOVE E,TP ; POINT TO BINDING WITH E +SPECB1: PUSH P,[0] ; SLOTS OF INTEREST + PUSH P,[0] + SUBM M,-2(P) + +SPECB2: MOVEI 0,(TB) ; FOR FRAME CHECK + MOVE A,-5(E) ; LOOK AT FIRST THING + CAMN A,BNDA ; SKIP IF LOSER + CAILE 0,-5(E) ; SKIP IF REAL WINNER + JRST SPECB3 + + SUB E,[5,,5] ; POINT TO BINDING + SKIPE A,(P) ; LINK? + HRRM E,(A) ; YES DO IT + SKIPN -1(P) ; FIRST ONE? + MOVEM E,-1(P) ; THIS IS IT + + MOVE A,1(E) ; POINT TO ATOM + MOVE 0,BINDID+1(PVP) ; QUICK CHECK + HRLI 0,TLOCI + CAMN 0,(A) ; WINNERE? + JRST SPECB4 ; YES, GO ON + + PUSH P,B ; SAVE REST OF ACS + PUSH P,C + PUSH P,D + MOVE B,A ; FOR ILOC TO WORK + PUSHJ P,ILOC ; GO LOOK IT UP + HRRZ C,SPBASE+1(PVP) + MOVEI A,(TP) + CAIL A,(B) ; SKIP IF LOSER + CAILE C,(B) ; SKIP IF WINNER + MOVEI B,0 ; SAY NO BACK POINTER + MOVE C,1(E) ; POINT TO ATOM + MOVEI A,(C) ; PURE ATOM? + CAIGE A,HIBOT ; SKIP IF OK + JRST .+4 + PUSH P,-4(P) ; MAKE HAPPINESS + PUSHJ P,SPCUNP ; IMPURIFY + POP P,-5(P) + MOVE A,BINDID+1(PVP) + HRLI A,TLOCI + MOVEM A,(C) ; STOR POINTER INDICATOR + MOVE A,B + POP P,D + POP P,C + POP P,B + JRST SPECB5 + +SPECB4: MOVE A,1(A) ; GET LOCATIVE +SPECB5: EXCH A,5(E) ; CLOBBER INTO REBIND SLOT (GET DECL) + HLL A,OTBSAV(TB) ; TIME IT + MOVSM A,4(E) ; SAVE DECL AND TIME + MOVEI A,TBIND + HRLM A,(E) ; CHANGE TO A BINDING + MOVE A,1(E) ; POINT TO ATOM + MOVEM E,(P) ; REMEMBER THIS GUY + ADD E,[2,,2] ; POINT TO VAL CELL + MOVEM E,1(A) ; INTO ATOM SLOT + SUB E,[3,,3] ; POINT TO NEXT ONE + JRST SPECB2 + +SPECB3: SKIPE A,(P) + HRRM SP,(A) ; LINK OLD STUFF + SKIPE A,-1(P) ; NEW SP? + MOVE SP,A + SUB P,[2,,2] + INTGO ; IN CASE BLEW STACK + SUBM M,(P) + POPJ P, + + +;SPECSTORE RESTORES THE BINDINGS SP TO THE ENVIRONMENT POINTER IN +;SPSAV (TB). IT IS CALLED BY PUSHJ P,SPECSTORE. + +SPECSTORE: + PUSH P,E + HRRZ E,SPSAV (TB) ;GET TARGET POINTER + PUSHJ P,STLOOP + POP P,E + MOVE SP,SPSAV(TB) ; GET NEW SP + POPJ P, + +STLOOP: PUSH P,D + PUSH P,C + +STLOO1: CAIL E,(SP) ;ARE WE DONE? + JRST STLOO2 + HLRZ C,(SP) ;GET TYPE OF BIND + CAIN C,TUBIND + JRST .+3 + CAIE C,TBIND ;NORMAL IDENTIFIER? + JRST ISTORE ;NO -- SPECIAL HACK + + + MOVE C,1(SP) ;GET TOP ATOM + MOVSI 0,TLOCI ; MAYBE LOCI OR UNBOUND + SKIPN D,5(SP) + MOVSI 0,TUNBOU + + HRR 0,BINDID+1(PVP) ;STORE SIGNATURE + MOVEM 0,(C) ;CLOBBER INTO ATOM + MOVEM D,1(C) + SETZM 4(SP) +SPLP: HRRZ SP,(SP) ;FOLOW LINK + JUMPN SP,STLOO1 ;IF MORE + SKIPE E ; OK IF E=0 + FATAL SP OVERPOP +STLOO2: POP P,C + POP P,D + POPJ P, + +ISTORE: CAIE C,TBVL + JRST CHSKIP + MOVE C,1(SP) + MOVE D,2(SP) + MOVEM D,(C) + MOVE D,3(SP) + MOVEM D,1(C) + JRST SPLP + +CHSKIP: CAIN C,TSKIP + JRST SPLP + CAIE C,TUNWIN ; UNWIND HACK + FATAL BAD SP + HRRZ C,-2(P) ; WHERE FROM? + CAIE C,CHUNPC + JRST SPLP ; IGNORE + MOVEI E,(TP) ; FIXUP SP + SUBI E,(SP) + MOVSI E,(E) + HLL SP,TP + SUB SP,E + POP P,C + POP P,D + AOS (P) + POPJ P, + +; ENTRY FOR FUNNY COMPILER UNBIND (1) + +SSPECS: PUSH P,E + MOVEI E,(TP) + PUSHJ P,STLOOP +SSPEC2: SUBI E,(SP) ; MAKE SP BE AOBJN + MOVSI E,(E) + HLL SP,TP + SUB SP,E + POP P,E + POPJ P, + +; ENTRY FOR FUNNY COMPILER UNBIND (2) + +SSPEC1: PUSH P,E + SUBI E,1 ; MAKE SURE GET CURRENT BINDING + PUSHJ P,STLOOP ; UNBIND + MOVEI E,(TP) ; NOW RESET SP + JRST SSPEC2 + EFINIS: SKIPN C,1STEPR+1(PVP) ; SKIP NIF BEING ONE PROCEEDED + JRST FINIS + PUSH TP,$TATOM + PUSH TP,MQUOTE EVLOUT + PUSH TP,A ;SAVE EVAL RESULTS + PUSH TP,B + PUSH TP,[TINFO,,2] ; FENCE POST + PUSHJ P,TBTOTP + PUSH TP,D + PUSHJ P,MAKINF ; MAKE ARG BLOCK INFO + PUSH TP,A + MOVEI B,-6(TP) + HRLI B,-4 ; AOBJN TO ARGS BLOCK + PUSH TP,B + PUSH TP,1STEPR(PVP) + PUSH TP,1STEPR+1(PVP) ; PROCESS DOING THE 1STEPPING + MCALL 2,RESUME + MOVE A,-3(TP) ; GET BACK EVAL VALUE + MOVE B,-2(TP) + JRST FINIS + +1STEPI: PUSH TP,$TATOM + PUSH TP,MQUOTE EVLIN + PUSH TP,$TAB ; PUSH EVALS ARGGS + PUSH TP,AB + PUSHJ P,MAKINF ; TURN INTO ARGS BLOCK + MOVEM A,-1(TP) ; AND CLOBBER + PUSH TP,[TINFO,,2] ; FENCE POST 2D TUPLE + PUSHJ P,TBTOTP + PUSH TP,D + PUSHJ P,MAKINF ; TURN IT INTO ARGS BLOCK + PUSH TP,A + MOVEI B,-6(TP) ; SETUP TUPLE + HRLI B,-4 + PUSH TP,B + PUSH TP,1STEPR(PVP) + PUSH TP,1STEPR+1(PVP) + MCALL 2,RESUME ; START UP 1STEPERR + SUB TP,[6,,6] ; REMOVE CRUD + GETYP A,A ; GET 1STEPPERS TYPE + CAIE A,TDISMI ; IF DISMISS, STOP 1 STEPPING + JRST EVALON + +; HERE TO PUSH DOWN THE 1 STEP STATE AND RUN + + MOVE D,PVP + ADD D,[1STEPR,,1STEPR] ; POINT TO 1 STEP SLOT + PUSH TP,$TSP ; SAVE CURRENT SP + PUSH TP,SP + PUSH TP,BNDV + PUSH TP,D ; BIND IT + PUSH TP,$TPVP + PUSH TP,[0] ; NO 1 STEPPER UNTIL POPJ + PUSHJ P,SPECBIND + +; NOW PUSH THE ARGS UP TO RE-CALL EVAL + + MOVEI A,0 +EFARGL: JUMPGE AB,EFCALL + PUSH TP,(AB) + PUSH TP,1(AB) + ADD AB,[2,,2] + AOJA A,EFARGL + +EFCALL: ACALL A,EVAL ; NOW DO THE EVAL + MOVE C,(TP) ; PRE-UNBIND + MOVEM C,1STEPR+1(PVP) + MOVE SP,-4(TP) ; AVOID THE UNBIND + SUB TP,[6,,6] ; AND FLUSH LOSERS + JRST EFINIS ; AND TRY TO FINISH UP + +MAKINF: HLRZ A,OTBSAV(TB) ; TIME IT + HRLI A,TARGS + POPJ P, + + +TBTOTP: MOVEI D,(TB) ; COMPUTE REL DIST FROM TP TO TB + SUBI D,(TP) + POPJ P, +; ARRIVE HERE TO COMPLETE A COMPILER GENERATED TUPLE +; D/ LENGTH OF THE TUPLE IN WORDS + +MAKTU2: MOVE D,-1(P) ; GET LENGTH +MAKTUP: HRLI D,TINFO ; FIRST WORD OF FENCE POST + PUSH TP,D + HRROI B,(TP) ; TOP OF TUPLE + SUBI B,(D) + TLC B,-1(D) ; AOBJN IT + PUSHJ P,TBTOTP + PUSH TP,D + HLRZ A,OTBSAV(TB) ; TIME IT + HRLI A,TARGS + POPJ P, + +; HERE TO ALLOCATE SLOTS FOR COMPILER (AMNT IN A) + +TPALOC: HRLI A,(A) + ADD TP,A + SKIPL TP + PUSHJ P,TPOVFL ; IN CASE IT LOST + INTGO ; TAKE THE GC IF NEC + PUSH P,A + HRRI A,2(TP) + SUB A,(P) + SETZM -1(A) + HRLI A,-1(A) + BLT A,(TP) + SUB P,[1,,1] + POPJ P, + +NTPALO: PUSH TP,[0] + SOJG 0,.-1 + POPJ P, + + ;EVALUATES A IDENTIFIER -- GETS LOCAL VALUE IF THERE IS ONE, OTHERWISE GLOBAL. + +MFUNCTION VALUE,SUBR + JSP E,CHKAT + PUSHJ P,IDVAL + JRST FINIS + +IDVAL: PUSHJ P,IDVAL1 + CAMN A,$TUNBOU + JRST UNBOU + POPJ P, + +IDVAL1: PUSH TP,A + PUSH TP,B ;SAVE ARG IN CASE NEED TO CHECK GLOBAL VALUE + PUSHJ P,ILVAL ;LOCAL VALUE FINDER + CAME A,$TUNBOUND ;IF NOT UNBOUND OR UNASSIGNED + JRST RIDVAL ;DONE - CLEAN UP AND RETURN + POP TP,B ;GET ARG BACK + POP TP,A + JRST IGVAL +RIDVAL: SUB TP,[2,,2] + POPJ P, + +;GETS THE LOCAL VALUE OF AN IDENTIFIER + +MFUNCTION LVAL,SUBR + JSP E,CHKAT + PUSHJ P,AILVAL + CAME A,$TUNBOUND + JRST FINIS + JUMPN B,UNAS + JRST UNBOU + +; MAKE AN ATOM UNASSIGNED + +MFUNCTION UNASSIGN,SUBR + JSP E,CHKAT ; GET ATOM ARG + PUSHJ P,AILOC +UNASIT: CAMN A,$TUNBOU ; IF UNBOUND + JRST RETATM + MOVSI A,TUNBOU + MOVEM A,(B) + SETOM 1(B) ; MAKE SURE +RETATM: MOVE B,1(AB) + MOVE A,(AB) + JRST FINIS + +; UNASSIGN GLOBALLY + +MFUNCTION GUNASSIGN,SUBR + JSP E,CHKAT2 + PUSHJ P,IGLOC + CAMN A,$TUNBOU + JRST RETATM + MOVE B,1(AB) ; ATOM BACK + MOVEI 0,(B) + CAIL 0,HIBOT ; SKIP IF IMPURE + PUSHJ P,IMPURIFY ; YES, MAKE IT IMPURE + PUSHJ P,IGLOC ; RESTORE LOCATIVE + HRRZ 0,-2(B) ; SEE IF MANIFEST + GETYP A,(B) ; AND CURRENT TYPE + CAIN 0,-1 + CAIN A,TUNBOU + JRST UNASIT + SKIPE IGDECL + JRST UNASIT + MOVE D,B + JRST MANILO + +; GETS A LOCATIVE TO THE LOCAL VALUE OF AN IDENTIFIER. + +MFUNCTION LLOC,SUBR + JSP E,CHKAT + PUSHJ P,AILOC + CAMN A,$TUNBOUND + JRST UNBOU + MOVSI A,TLOCD + HRR A,2(B) + JRST FINIS + +;TESTS TO SEE IF AN IDENTIFIER IS LOCALLY BOUND + +MFUNCTION BOUND,SUBR,[BOUND?] + JSP E,CHKAT + PUSHJ P,AILVAL + CAMN A,$TUNBOUND + JUMPE B,IFALSE + JRST TRUTH + +;TESTS TO SEE IF AN IDENTIFIER IS LOCALLY ASSIGNED + +MFUNCTION ASSIGP,SUBR,[ASSIGNED?] + JSP E,CHKAT + PUSHJ P,AILVAL + CAME A,$TUNBOUND + JRST TRUTH +; JUMPE B,UNBOU + JRST IFALSE + +;GETS THE GLOBAL VALUE OF AN IDENTIFIER + +MFUNCTION GVAL,SUBR + JSP E,CHKAT2 + PUSHJ P,IGVAL + CAMN A,$TUNBOUND + JRST UNAS + JRST FINIS + +;GETS A LOCATIVE TO THE GLOBAL VALUE OF AN IDENTIFIER + +MFUNCTION GLOC,SUBR + + JUMPGE AB,TFA + CAMGE AB,[-5,,] + JRST TMA + JSP E,CHKAT1 + MOVEI E,IGLOC + CAML AB,[-2,,] + JRST .+4 + GETYP 0,2(AB) + CAIE 0,TFALSE + MOVEI E,IIGLOC + PUSHJ P,(E) + CAMN A,$TUNBOUND + JRST UNAS + MOVSI A,TLOCD + MOVE C,1(AB) ; GE ATOM + MOVEI 0,(C) + CAIGE 0,HIBOT ; SKIP IF PURE ATOM + JRST FINIS + +; MAKE ATOM AND VALUE IMPURE IF GETTING GLOC TO IT + + MOVE B,C ; ATOM TO B + PUSHJ P,IMPURIFY + JRST GLOC ; AND TRY AGAIN + +;TESTS TO SEE IF AN IDENTIFIER IS GLOBALLY ASSIGNED + +MFUNCTION GASSIG,SUBR,[GASSIGNED?] + JSP E,CHKAT2 + PUSHJ P,IGVAL + CAMN A,$TUNBOUND + JRST IFALSE + JRST TRUTH + +; TEST FOR GLOBALLY BOUND + +MFUNCTION GBOUND,SUBR,[GBOUND?] + + JSP E,CHKAT2 + PUSHJ P,IGLOC + JUMPE B,IFALSE + JRST TRUTH + + + +CHKAT2: ENTRY 1 +CHKAT1: GETYP A,(AB) + MOVSI A,(A) + CAME A,$TATOM + JRST NONATM + MOVE B,1(AB) + JRST 2,(E) + +CHKAT: HLRE A,AB ; - # OF ARGS + ASH A,-1 ; TO ACTUAL WORDS + JUMPGE AB,TFA + MOVE C,SP ; FOR BINDING LOOKUPS + AOJE A,CHKAT1 ; ONLY ONE ARG, NO ENVIRONMENT + AOJL A,TMA ; TOO MANY + GETYP A,2(AB) ; MAKE SURE OF TENV OR TFRAME + CAIE A,TFRAME + CAIN A,TENV + JRST CHKAT3 + CAIN A,TACT ; FOR PFISTERS LOSSAGE + JRST CHKAT3 + CAIE A,TPVP ; OR PROCESS + JRST WTYP2 + MOVE B,3(AB) ; GET PROCESS + MOVE C,SP ; IN CASE ITS ME + CAME B,PVP ; SKIP IF DIFFERENT + MOVE C,SPSTO+1(B) ; GET ITS SP + JRST CHKAT1 +CHKAT3: MOVEI B,2(AB) ; POINT TO FRAME POINTER + PUSHJ P,CHFRM ; VALIDITY CHECK + MOVE B,3(AB) ; GET TB FROM FRAME + MOVE C,SPSAV(B) ; GET ENVIRONMENT POINTER + JRST CHKAT1 + + + +;ILOC RETURNS IN A AND B A LOCATIVE TO THE LOCAL VALUE OF THE IDENTIFIER PASSED TO IT +;IN A AND B. IF THE IDENTIFIER IS LOCALLY UNBOUND IT RETURNS $TUNBOUND IN A AND 0 IN B, +; IT IS CALLED BY PUSHJ P,ILOC. + +ILOC: MOVE C,SP ; SETUP SEARCH START +AILOC: MOVSI A,TLOCI ;MAKE A LOCATIVE TYPE CELL + PUSH P,E + PUSH P,D + MOVEI E,0 ; FLAG TO CLOBBER ATOM + JUMPE B,SCHSP ; IF LOOKING FOR SLOT, SEARCH NOW + CAME C,SP ; ENVIRONMENT CHANGE? + JRST SCHSP ; YES, MUST SEARCH + HRR A,BINDID+1(PVP) ;FOR THE CURRENT PROCESS + CAME A,(B) ;IS THERE ONE IN THE VALUE CELL? + JRST SCHLP ;NO -- SEARCH THE LOCAL BINDINGS + MOVE B,1(B) ;YES -- GET LOCATIVE POINTER + MOVE C,PVP +ILCPJ: MOVE E,SPCCHK + TRNN E,1 ; SKIP IF DOING SPEC UNSPEC CHECK + JRST ILOCPJ + HLRZ E,-2(B) + CAIE E,TUBIND + JRST ILOCPJ + CAMGE B,CURFCN+1(PVP) + JRST UNPJ11 + MOVEI D,-2(B) + CAIG D,(SP) + CAMGE B,SPBASE+1(PVP) + JRST UNPJ11 +ILOCPJ: POP P,D + POP P,E + POPJ P, ;FROM THE VALUE CELL + +SCHLP: MOVEI D,(B) + CAIL D,HIBOT ; SKIP IF IMPURE ATOM +SCHSP: MOVEI E,1 ; DONT STORE LOCATIVE + + PUSH P,E ; PUSH SWITCH + MOVE E,PVP ; GET PROC +SCHLP1: JUMPE C,UNPJ ;IF NO MORE -- LOSE + CAMN B,1(C) ;ARE WE POINTING AT THE WINNER? + JRST SCHFND ;YES + GETYP D,(C) ; CHECK SKIP + CAIE D,TSKIP + JRST SCHLP2 + PUSH P,B ; CHECK DETOUR + MOVEI B,2(C) + PUSHJ P,CHFRAM ; NON-FATAL FRAME CHECKER + HRRZ E,2(C) ; CONS UP PROCESS + SUBI E,PVLNT*2+1 + HRLI E,-2*PVLNT + JUMPE B,SCHLP3 ; LOSER, FIX IT + POP P,B + MOVEI C,1(C) ; FOLLOW LOOKUP CHAIN +SCHLP2: HRRZ C,(C) ;FOLLOW LINK + JRST SCHLP1 + +SCHLP3: POP P,B + MOVEI C,(SP) ; *** NDR'S BUG *** + CAME E,PVP ; USE IF CURRENT PROCESS + HRRZ C,SPSTO+1(E) ; USE CURRENT SP FOR PROC + JRST SCHLP1 + +SCHFND: EXCH B,C ;SAVE THE ATOM PTR IN C + MOVEI B,2(B) ;MAKE UP THE LOCATIVE + SUB B,TPBASE+1(E) + HRLI B,(B) + ADD B,TPBASE+1(E) + EXCH C,E ; RET PROCESS IN C + POP P,D ; RESTORE SWITCH + + JUMPN D,ILOCPJ ; DONT CLOBBER ATOM + MOVEM A,(E) ;CLOBBER IT AWAY INTO THE + MOVEM B,1(E) ;ATOM'S VALUE CELL + JRST ILCPJ + +UNPJ: SUB P,[1,,1] ; FLUSH CRUFT +UNPJ1: MOVE C,E ; RET PROCESS ANYWAY +UNPJ11: POP P,D + POP P,E +UNPOPJ: MOVSI A,TUNBOUND + MOVEI B,0 + POPJ P, + +;IGLOC RETURNS IN A AND B A LOCATIVE TO THE GLOBAL VALUE OF THE +;IDENTIFIER PASSED TO IT IN A AND B. IF THE IDENTIFIER IS GLOBALLY +;UNBPOUND IT RETURNS $TUNBOUND IN A AND 0 IN B. IT IS CALLED BY PUSHJ P,IGLOC. + + +IGLOC: MOVSI A,TLOCI ;DO WE HAVE A LOCATIVE TO + CAME A,(B) ;A PROCESS #0 VALUE? + JRST SCHGSP ;NO -- SEARCH + MOVE B,1(B) ;YES -- GET VALUE CELL + POPJ P, + +SCHGSP: MOVE D,GLOBSP+1(TVP) ;GET GLOBAL SP PTR + +SCHG1: JUMPGE D,UNPOPJ ;IF NO MORE, LEAVE + CAMN B,1(D) ;ARE WE FOUND? + JRST GLOCFOUND ;YES + ADD D,[4,,4] ;NO -- TRY NEXT + JRST SCHG1 + +GLOCFOUND: + EXCH B,D ;SAVE ATOM PTR + ADD B,[2,,2] ;MAKE LOCATIVE + MOVEI 0,(D) + CAIL 0,HIBOT + POPJ P, + MOVEM A,(D) ;CLOBBER IT AWAY + MOVEM B,1(D) + POPJ P, + +IIGLOC: PUSH TP,$TATOM + PUSH TP,B + PUSHJ P,IGLOC + MOVE C,(TP) + SUB TP,[2,,2] + GETYP 0,A + CAIE 0,TUNBOU + POPJ P, + PUSH TP,$TATOM + PUSH TP,C + PUSHJ P,BSETG ; MAKE A SLOT + SETOM 1(B) ; UNBOUNDIFY IT + MOVSI A,TLOCD + MOVSI 0,TUNBOU + MOVEM 0,(B) + SUB TP,[2,,2] + POPJ P, + + + +;ILVAL RETURNS IN A AND B THE LOCAL VALUE OF THE IDENTIFIER PASSED TO IT IN A AND B +;IF THE IDENTIFIER IS UNBOUND ITS VALUE IS $TUNBOUND IN A AND 0 IN B. IF +;IT IS UNASSIGNED ITS VALUE IS $TUNBOUND IN A AND -1 IN B. CALL - PUSHJ P,IVAL + +AILVAL: + PUSHJ P,AILOC ; USE SUPPLIED SP + JRST CHVAL +ILVAL: + PUSHJ P,ILOC ;GET LOCATIVE TO VALUE +CHVAL: CAMN A,$TUNBOUND ;BOUND + POPJ P, ;NO -- RETURN + MOVSI A,TLOCD ; GET GOOD TYPE + HRR A,2(B) ; SHOULD BE TIME OR 0 + PUSH P,0 + PUSHJ P,RMONC0 ; CHECK READ MONITOR + POP P,0 + MOVE A,(B) ;GET THE TYPE OF THE VALUE + MOVE B,1(B) ;GET DATUM + POPJ P, + +;IGVAL -- LIKE ILVAL EXCEPT FOR GLOBAL VALUES + +IGVAL: PUSHJ P,IGLOC + JRST CHVAL + + + +; COMPILERS INTERFACE TO LVAL/GVAL/SETG/SET + +CILVAL: MOVE 0,BINDID+1(PVP) ; CURRENT BIND + HRLI 0,TLOCI + CAME 0,(B) ; HURRAY FOR SPEED + JRST CILVA1 ; TOO BAD + MOVE C,1(B) ; POINTER + MOVE A,(C) ; VAL TYPE + TLNE A,.RDMON ; MONITORS? + JRST CILVA1 + GETYP 0,A + CAIN 0,TUNBOU + JRST CUNAS ; COMPILER ERROR + MOVE B,1(C) ; GOT VAL + MOVE 0,SPCCHK + TRNN 0,1 + POPJ P, + HLRZ 0,-2(C) ; SPECIAL CHECK + CAIE 0,TUBIND + POPJ P, ; RETURN + CAMGE C,CURFCN+1(PVP) + JRST CUNAS + POPJ P, + +CUNAS: +CILVA1: SUBM M,(P) ; FIX (P) + PUSH TP,$TATOM ; SAVE ATOM + PUSH TP,B + MCALL 1,LVAL ; GET ERROR/MONITOR +MPOPJ: +POPJM: SUBM M,(P) ; REPAIR DAMAGE + POPJ P, + +; COMPILERS INTERFACE TO SET C/ ATOM A,B/ NEW VALUE + +CISET: MOVE 0,BINDID+1(PVP) ; CURRENT BINDING ENVIRONMENT + HRLI 0,TLOCI + CAME 0,(C) ; CAN WE WIN? + JRST CISET1 ; NO, MORE HAIR + MOVE D,1(C) ; POINT TO SLOT + HLLZ 0,(D) ; MON CHECK +CISET3: TLNE 0,.WRMON + JRST CISET4 ; YES, LOSE + TLZ 0,TYPMSK + IOR A,0 ; LEAVE MONITOR ON + MOVE 0,SPCCHK + TRNE 0,1 + JRST CISET5 ; SPEC/UNSPEC CHECK +CISET6: MOVEM A,(D) ; STORE + MOVEM B,1(D) + POPJ P, + +CISET5: HLRZ 0,-2(D) + CAIE 0,TUBIND + JRST CISET6 + CAMGE D,CURFCN+1(PVP) + JRST CISET4 + JRST CISET6 + +CISET1: SUBM M,(P) ; FIX ADDR + PUSH TP,$TATOM ; SAVE ATOM + PUSH TP,C + PUSH TP,A + PUSH TP,B + MOVE B,C ; GET ATOM + PUSHJ P,ILOC ; SEARCH + MOVE D,B ; POSSIBLE POINTER + GETYP E,A + MOVE 0,A + MOVE A,-1(TP) ; VAL BACK + MOVE B,(TP) + CAIE E,TUNBOU ; SKIP IF WIN + JRST CISET2 ; GO CLOBBER IT IN + MCALL 2,SET + JRST POPJM + +CISET2: MOVE C,-2(TP) ; ATOM BACK + SUBM M,(P) ; RESET (P) + SUB TP,[4,,4] + JRST CISET3 + +; HERE TO DO A MONITORED SET + +CISET4: SUBM M,(P) ; AGAIN FIX (P) + PUSH TP,$TATOM + PUSH TP,C + PUSH TP,A + PUSH TP,B + MCALL 2,SET + JRST POPJM + +; COMPILER LLOC + +CLLOC: MOVE 0,BINDID+1(PVP) ; GET CURRENT LOCATIVE + HRLI 0,TLOCI + CAME 0,(B) ; WIN? + JRST CLLOC1 + MOVE B,1(B) + MOVE 0,SPCCHK + TRNE 0,1 ; SKIP IF NOT CHECKING + JRST CLLOC9 +CLLOC3: MOVSI A,TLOCD + HRR A,2(B) ; GET BIND TIME + POPJ P, + +CLLOC1: SUBM M,(P) + PUSH TP,$TATOM + PUSH TP,B + PUSHJ P,ILOC ; LOOK IT UP + JUMPE B,CLLOC2 + SUB TP,[2,,2] +CLLOC4: SUBM M,(P) + JRST CLLOC3 + +CLLOC2: MCALL 1,LLOC + JRST CLLOC4 + +CLLOC9: HLRZ 0,-2(B) + CAIE 0,TUBIND + JRST CLLOC3 + CAMGE B,CURFCN+1(PVP) + JRST CLLOC2 + JRST CLLOC3 + +; COMPILER BOUND? + +CBOUND: SUBM M,(P) + PUSHJ P,ILOC + JUMPE B,PJFALS ; IF UNBOUND RET FALSE AND NO SSKIP +PJT1: SOS (P) + MOVSI A,TATOM + MOVE B,MQUOTE T + JRST POPJM + +PJFALS: MOVEI B,0 + MOVSI A,TFALSE + JRST POPJM + +; COMPILER ASSIGNED? + +CASSQ: SUBM M,(P) + PUSHJ P,ILOC + JUMPE B,PJFALS + GETYP 0,(B) + CAIE 0,TUNBOU + JRST PJT1 + JRST PJFALS + + +; COMPILER GVAL B/ ATOM + +CIGVAL: MOVE 0,(B) ; GLOBAL VAL HERE? + CAME 0,$TLOCI ; TIME=0 ,TYPE=TLOCI => GLOB VAL + JRST CIGVA1 ; NO, GO LOOK + MOVE C,1(B) ; POINT TO SLOT + MOVE A,(C) ; GET TYPE + TLNE A,.RDMON + JRST CIGVA1 + GETYP 0,A ; CHECK FOR UNBOUND + CAIN 0,TUNBOU ; SKIP IF WINNER + JRST CGUNAS + MOVE B,1(C) + POPJ P, + +CGUNAS: +CIGVA1: SUBM M,(P) + PUSH TP,$TATOM + PUSH TP,B + .MCALL 1,GVAL ; GET ERROR/MONITOR + JRST POPJM + +; COMPILER INTERFACET TO SETG + +CSETG: MOVE 0,(C) ; GET V CELL + CAME 0,$TLOCI ; SKIP IF FAST + JRST CSETG1 + HRRZ D,1(C) ; POINT TO SLOT + MOVE 0,(D) ; OLD VAL +CSETG3: CAIG D,HIBOT ; SKIP IF PURE ATOM + TLNE 0,.WRMON ; MONITOR + JRST CSETG2 + MOVEM A,(D) + MOVEM B,1(D) + POPJ P, + +CSETG1: SUBM M,(P) ; FIX UP P + PUSH TP,$TATOM + PUSH TP,C + PUSH TP,A + PUSH TP,B + MOVE B,C + PUSHJ P,IGLOC ; FIND GLOB LOCATIVE + GETYP E,A + MOVE 0,A + MOVEI D,(B) ; SETUP TO RESTORE NEW VAL + MOVE A,-1(TP) + MOVE B,(TP) + CAIE E,TUNBOU + JRST CSETG4 + MCALL 2,SETG + JRST POPJM + +CSETG4: MOVE C,-2(TP) ; ATOM BACK + SUBM M,(P) ; RESET (P) + SUB TP,[4,,4] + JRST CSETG3 + +CSETG2: SUBM M,(P) + PUSH TP,$TATOM ; CAUSE A SETG MONITOR + PUSH TP,C + PUSH TP,A + PUSH TP,B + MCALL 2,SETG + JRST POPJM + +; COMPILER GLOC + +CGLOC: MOVE 0,(B) ; GET CURRENT GUY + CAME 0,$TLOCI ; WIN? + JRST CGLOC1 ; NOPE + HRRZ D,1(B) ; POINT TO SLOT + CAILE D,HIBOT ; PURE? + JRST CGLOC1 + MOVE A,$TLOCD + MOVE B,1(B) + POPJ P, + +CGLOC1: SUBM M,(P) + PUSH TP,$TATOM + PUSH TP,B + MCALL 1,GLOC + JRST POPJM + +; COMPILERS GASSIGNED? + +CGASSQ: MOVE 0,(B) + SUBM M,(P) + CAMN 0,$TLOCD + JRST PJT1 + PUSHJ P,IGLOC + JUMPE B,PJFALS + GETYP 0,(B) + CAIE 0,TUNBOU + JRST PJT1 + JRST PJFALS + +; COMPILERS GBOUND? + +CGBOUN: MOVE 0,(B) + SUBM M,(P) + CAMN 0,$TLOCD + JRST PJT1 + PUSHJ P,IGLOC + JUMPE B,PJFALS + JRST PJT1 + + +MFUNCTION REP,FSUBR,[REPEAT] + JRST PROG +MFUNCTION PROG,FSUBR + ENTRY 1 + GETYP A,(AB) ;GET ARG TYPE + CAIE A,TLIST ;IS IT A LIST? + JRST WRONGT ;WRONG TYPE + SKIPN C,1(AB) ;GET AND CHECK ARGUMENT + JRST TFA ;TOO FEW ARGS + SETZB E,D ; INIT HEWITT ATOM AND DECL + PUSHJ P,CARATC ; IS 1ST THING AN ATOM + JFCL + PUSHJ P,RSATY1 ; CDR AND GET TYPE + CAIE 0,TLIST ; MUST BE LIST + JRST MPD.13 + MOVE B,1(C) ; GET ARG LIST + PUSH TP,$TLIST + PUSH TP,C + PUSHJ P,RSATYP + CAIE 0,TDECL + JRST NOP.DC ; JUMP IF NO DCL + MOVE D,1(C) + MOVEM C,(TP) + PUSHJ P,RSATYP ; CDR ON +NOP.DC: PUSH TP,$TLIST + PUSH TP,B ; AND ARG LIST + PUSHJ P,PRGBND ; BIND AUX VARS + MOVE E,MQUOTE LPROG,[LPROG ]INTRUP + PUSHJ P,MAKACT ; MAKE ACTIVATION + PUSHJ P,PSHBND ; BIND AND CHECK + PUSHJ P,SPECBI ; NAD BIND IT + +; HERE TO RUN PROGS FUNCTIONS ETC. + +DOPROG: MOVEI A,REPROG + HRLI A,TDCLI ; FLAG AS FUNNY + MOVEM A,(TB) ; WHERE TO AGAIN TO + MOVE C,1(TB) + MOVEM C,3(TB) ; RESTART POINTER + JRST .+2 ; START BY SKIPPING DECL + +DOPRG1: PUSHJ P,FASTEV + HRRZ C,@1(TB) ;GET THE REST OF THE BODY +DOPRG2: MOVEM C,1(TB) + JUMPN C,DOPRG1 +ENDPROG: + HRRZ C,FSAV(TB) + CAIN C,REP +REPROG: SKIPN C,@3(TB) + JRST PFINIS + HRRZM C,1(TB) + INTGO + MOVE C,1(TB) + JRST DOPRG1 + + +PFINIS: GETYP 0,(TB) + CAIE 0,TDCLI ; DECL'D ? + JRST PFINI1 + HRRZ 0,(TB) ; SEE IF RSUBR + JUMPE 0,RSBVCK ; CHECK RSUBR VALUE + HRRZ C,3(TB) ; GET START OF FCN + GETYP 0,(C) ; CHECK FOR DECL + CAIE 0,TDECL + JRST PFINI1 ; NO, JUST RETURN + MOVE E,MQUOTE VALUE + PUSHJ P,PSHBND ; BUILD FAKE BINDING + MOVE C,1(C) ; GET DECL LIST + MOVE E,TP + PUSHJ P,CHKDCL ; AND CHECK IT + MOVE A,-3(TP) ; GET VAL BAKC + MOVE B,-2(TP) + SUB TP,[6,,6] + +PFINI1: HRRZ C,FSAV(TB) + CAIE C,EVAL + JRST FINIS + JRST EFINIS + +RSATYP: HRRZ C,(C) +RSATY1: JUMPE C,TFA + GETYP 0,(C) + POPJ P, + +; HERE TO CHECK RSUBR VALUE + +RSBVCK: PUSH TP,A + PUSH TP,B + MOVE C,A + MOVE D,B + MOVE A,1(TB) ; GET DECL + MOVE B,1(A) + HLLZ A,(A) + PUSHJ P,TMATCH + JRST RSBVC1 + POP TP,B + POP TP,A + POPJ P, + +RSBVC1: MOVE C,1(TB) + POP TP,B + POP TP,D + MOVE A,MQUOTE VALUE + JRST TYPMIS + + +MFUNCTION MRETUR,SUBR,[RETURN] + ENTRY + HLRE A,AB ; GET # OF ARGS + ASH A,-1 ; TO NUMBER + AOJL A,RET2 ; 2 OR MORE ARGS + PUSHJ P,PROGCH ;CHECK IN A PROG + PUSH TP,A + PUSH TP,B + MOVEI B,-1(TP) ; VERIFY IT +COMRET: PUSHJ P,CHFSWP + SKIPL C ; ARGS? + MOVEI C,0 ; REAL NONE + PUSHJ P,CHUNW + JUMPN A,CHFINI ; WINNER + MOVSI A,TATOM + MOVE B,MQUOTE T + +; SEE IF MUST CHECK RETURNS TYPE + +CHFINI: GETYP 0,(TB) ; SPECIAL TYPE IF SO + CAIE 0,TDCLI + JRST FINIS ; NO, JUST FINIS + MOVEI 0,PFINIS ; CAUSE TO FALL INTO FUNCTION CODE + HRRM 0,PCSAV(TB) + JRST CONTIN + + +RET2: AOJL A,TMA + GETYP A,(AB)+2 + CAIE A,TACT ; AS FOR "EXIT" SHOULD BE ACTIVATION + JRST WTYP2 + MOVEI B,(AB)+2 ; ADDRESS OF FRAME POINTER + JRST COMRET + + + +MFUNCTION AGAIN,SUBR + ENTRY + HLRZ A,AB ;GET # OF ARGS + CAIN A,-2 ;1 ARG? + JRST NLCLA ;YES + JUMPN A,TMA ;0 ARGS? + PUSHJ P,PROGCH ;CHECK FOR IN A PROG + PUSH TP,A + PUSH TP,B + JRST AGAD +NLCLA: GETYP A,(AB) + CAIE A,TACT + JRST WTYP1 + PUSH TP,(AB) + PUSH TP,1(AB) +AGAD: MOVEI B,-1(TP) ; POINT TO FRAME + PUSHJ P,CHFSWP + HRRZ C,(B) ; GET RET POINT +GOJOIN: PUSH TP,$TFIX + PUSH TP,C + MOVEI C,-1(TP) + PUSHJ P,CHUNW ; RESTORE FRAME, UNWIND IF NEC. + HRRZM B,PCSAV(TB) + HRRZ 0,FSAV(TB) ; CHECK FOR RSUBR + CAMGE 0,VECTOP + CAMG 0,VECBOT + JRST CONTIN + HRRZ E,1(TB) + PUSH TP,$TFIX + PUSH TP,B + MOVEI C,-1(TP) + MOVEI B,(TB) + PUSHJ P,CHUNW1 + MOVE TP,1(TB) + MOVEM SP,SPSAV(TB) + MOVEM TP,TPSAV(TB) + MOVE C,OTBSAV(TB) ; AND RESTORE P FROM FATHER + MOVE P,PSAV(C) + MOVEM P,PSAV(TB) + HRLI B,M + MOVEM B,PCSAV(TB) + JRST CONTIN + +MFUNCTION GO,SUBR + ENTRY 1 + GETYP A,(AB) + CAIE A,TATOM + JRST NLCLGO + PUSHJ P,PROGCH ;CHECK FOR A PROG + PUSH TP,A ;SAVE + PUSH TP,B + MOVEI B,-1(TP) + PUSHJ P,CHFSWP + PUSH TP,$TATOM + PUSH TP,1(C) + PUSH TP,2(B) + PUSH TP,3(B) + MCALL 2,MEMQ ;DOES IT HAVE THIS TAG? + JUMPE B,NXTAG ;NO -- ERROR +FNDGO: EXCH B,(TP) ;SAVE PLACE TO GO + MOVSI D,TLIST + MOVEM D,-1(TP) + JRST GODON + +NLCLGO: CAIE A,TTAG ;CHECK TYPE + JRST WTYP1 + MOVE B,1(AB) + MOVEI B,2(B) ; POINT TO SLOT + PUSHJ P,CHFSWP + MOVE A,1(C) + GETYP 0,(A) ; SEE IF COMPILED + CAIE 0,TFIX + JRST GODON1 + MOVE C,1(A) + JRST GOJOIN + +GODON1: PUSH TP,(A) ;SAVE BODY + PUSH TP,1(A) +GODON: MOVEI C,0 + PUSHJ P,CHUNW ;GO BACK TO CORRECT FRAME + MOVE B,(TP) ;RESTORE ITERATION MARKER + MOVEM B,1(TB) + MOVSI A,TFALSE + MOVEI B,0 + JRST CONTIN + + + + +MFUNCTION TAG,SUBR + ENTRY + JUMPGE AB,TFA + HLRZ 0,AB + GETYP A,(AB) ;GET TYPE OF ARGUMENT + CAIE A,TFIX ; FIX ==> COMPILED + JRST ATOTAG + CAIE 0,-4 + JRST WNA + GETYP A,2(AB) + CAIE A,TACT + JRST WTYP2 + PUSH TP,(AB) + PUSH TP,1(AB) + PUSH TP,2(AB) + PUSH TP,3(AB) + JRST GENTV +ATOTAG: CAIE A,TATOM ;CHECK THAT IT IS AN ATOM + JRST WTYP1 + CAIE 0,-2 + JRST TMA + PUSHJ P,PROGCH ;CHECK PROG + PUSH TP,A ;SAVE VAL + PUSH TP,B + PUSH TP,$TATOM + PUSH TP,1(AB) + PUSH TP,2(B) + PUSH TP,3(B) + MCALL 2,MEMQ + JUMPE B,NXTAG ;IF NOT FOUND -- ERROR + EXCH A,-1(TP) ;SAVE PLACE + EXCH B,(TP) + HRLI A,TFRAME + PUSH TP,A + PUSH TP,B +GENTV: MOVEI A,2 + PUSHJ P,IEVECT + MOVSI A,TTAG + JRST FINIS + +PROGCH: MOVE B,MQUOTE LPROG,[LPROG ]INTRUP + PUSHJ P,ILVAL ;GET VALUE + GETYP 0,A + CAIE 0,TACT + JRST NXPRG + POPJ P, + +; HERE TO UNASSIGN LPROG IF NEC + +UNPROG: MOVE B,MQUOTE LPROG,[LPROG ]INTRUP + PUSHJ P,ILVAL + GETYP 0,A + CAIE 0,TACT ; SKIP IF MUST UNBIND + JRST UNMAP + MOVSI A,TUNBOU + MOVNI B,1 + MOVE E,MQUOTE LPROG,[LPROG ]INTRUP + PUSHJ P,PSHBND +UNMAP: HRRZ 0,FSAV(TB) ; CHECK FOR FUNNY + CAIN 0,MAPPLY ; SKIP IF NOT + POPJ P, + MOVE B,MQUOTE LMAP,[LMAP ]INTRUP + PUSHJ P,ILVAL + GETYP 0,A + CAIE 0,TFRAME + JRST UNSPEC + MOVSI A,TUNBOU + MOVNI B,1 + MOVE E,MQUOTE LMAP,[LMAP ]INTRUP + PUSHJ P,PSHBND +UNSPEC: PUSH TP,BNDV + MOVE B,PVP + ADD B,[CURFCN,,CURFCN] + PUSH TP,B + PUSH TP,$TSP + MOVE E,SP + ADD E,[3,,3] + PUSH TP,E + POPJ P, + +REPEAT 0,[ +MFUNCTION MEXIT,SUBR,[EXIT] + ENTRY 2 + GETYP A,(AB) + CAIE A,TACT + JRST WTYP1 + MOVEI B,(AB) + PUSHJ P,CHFSWP + ADD C,[2,,2] + PUSHJ P,CHUNW ;RESTORE FRAME + JRST CHFINI ; CHECK FOR WINNING VALUE +] + +MFUNCTION COND,FSUBR + ENTRY 1 + GETYP A,(AB) + CAIE A,TLIST + JRST WRONGT + PUSH TP,(AB) + PUSH TP,1(AB) ;CREATE UNNAMED TEMP + MOVEI B,0 ; SET TO FALSE IN CASE + +CLSLUP: SKIPN C,1(TB) ;IS THE CLAUSELIST NIL? + JRST IFALS1 ;YES -- RETURN NIL + GETYP A,(C) ;NO -- GET TYPE OF CAR + CAIE A,TLIST ;IS IT A LIST? + JRST BADCLS ; + MOVE A,1(C) ;YES -- GET CLAUSE + JUMPE A,BADCLS + GETYPF B,(A) + PUSH TP,B ; EVALUATION OF + HLLZS (TP) + PUSH TP,1(A) ;THE PREDICATE + JSP E,CHKARG + MCALL 1,EVAL + GETYP 0,A + CAIN 0,TFALSE + JRST NXTCLS ;FALSE TRY NEXT CLAUSE + MOVE C,1(TB) ;IF NOT, DO FIRST CLAUSE + MOVE C,1(C) + HRRZ C,(C) + JUMPE C,FINIS ;(UNLESS DONE WITH IT) + JRST DOPRG2 ;AS THOUGH IT WERE A PROG +NXTCLS: HRRZ C,@1(TB) ;SET THE CLAUSLIST + HRRZM C,1(TB) ;TO CDR OF THE CLAUSLIST + JRST CLSLUP + +IFALSE: + MOVEI B,0 +IFALS1: MOVSI A,TFALSE ;RETURN FALSE + JRST FINIS + + + +MFUNCTION UNWIND,FSUBR + + ENTRY 1 + + GETYP 0,(AB) ; CHECK THE ARGS FOR WINNAGE + SKIPN A,1(AB) ; NONE? + JRST TFA + HRRZ B,(A) ; CHECK FOR 2D + JUMPE B,TFA + HRRZ 0,(B) ; 3D? + JUMPN 0,TMA + +; Unbind LPROG and LMAPF so that nothing cute happens + + PUSHJ P,UNPROG + +; Push thing to do upon UNWINDing + + PUSH TP,$TLIST + PUSH TP,[0] + + MOVEI C,UNWIN1 + PUSHJ P,IUNWIN ; GOT TO INTERNAL SET UP + +; Now EVAL the first form + + MOVE A,1(AB) + HRRZ 0,(A) ; SAVE POINTER TO OTHER GUY + MOVEM 0,-12(TP) + MOVE B,1(A) + GETYP A,(A) + MOVSI A,(A) + JSP E,CHKAB ; DEFER? + PUSH TP,A + PUSH TP,B + MCALL 1,EVAL ; EVAL THE LOSER + + JRST FINIS + +; Now push slots to hold undo info on the way down + +IUNWIN: +REPEAT 0,[ + JUMPE M,NOTRSB + MOVEI C,(C) + HLRE 0,M + SUBM M,0 + ANDI 0,-1 + CAIL C,HIBOT + JRST NOTRSB + CAIL C,(M) + CAML C,0 + JRST .+2 + SUBI C,(M) +NOTRSB:] + PUSH TP,$TTB ; DESTINATION FRAME + PUSH TP,[0] + PUSH TP,[0] ; ARGS TO WHOEVER IS DOING IT + PUSH TP,[0] + +; Now bind UNWIND word + + PUSH TP,$TUNWIN ; FIRST WORD OF IT + HRRM SP,(TP) ; CHAIN + MOVE SP,TP + PUSH TP,TB ; AND POINT TO HERE + PUSH TP,$TTP + PUSH TP,[0] + HRLI C,TPDL + PUSH TP,C + PUSH TP,P ; SAVE PDL ALSO + MOVEM TP,-2(TP) ; SAVE FOR LATER + POPJ P, + +; Do a non-local return with UNWIND checking + +CHUNW: HRRZ E,SPSAV(B) ; GET DESTINATION FRAME +CHUNW1: PUSH TP,(C) ; FINAL VAL + PUSH TP,1(C) + JUMPN C,.+3 ; WAS THERE REALLY ANYTHING + SETZM (TP) + SETZM -1(TP) + PUSHJ P,STLOOP ; UNBIND +CHUNPC: SKIPA ; WILL NOT SKIP UNLESS UNWIND FOUND + JRST GOTUND + MOVEI A,(TP) + SUBI A,(SP) + MOVSI A,(A) + HLL SP,TP + SUB SP,A + HRRI TB,(B) ; UPDATE TB + POP TP,B + POP TP,A + POPJ P, + +; Here if an UNDO found + +GOTUND: MOVE TB,1(SP) ; GET FRAME OF UNDO + MOVE A,-1(TP) ; GET FUNNY ARG FOR PASS ON + MOVE C,(TP) + MOVE TP,3(SP) ; GET FUTURE TP + MOVEM C,-6(TP) ; SAVE ARG + MOVEM A,-7(TP) + MOVE C,(TP) ; SAVED P + SUB C,[1,,1] + MOVEM C,PSAV(TB) ; MAKE CONTIN WIN + MOVEM TP,TPSAV(TB) + MOVEM SP,SPSAV(TB) + HRRZ C,(P) ; PC OF CHUNW CALLER + HRRM C,-11(TP) ; SAVE ALSO AND GET WHERE TO GO PC + MOVEM B,-10(TP) ; AND DESTINATION FRAME + HRRZ C,-1(TP) ; WHERE TO UNWIND PC + HRRZ 0,FSAV(TB) ; RSUBR? + CAMG 0,VECTOP + CAMGE 0,VECBOT + TLZA C,-1 ; 0 LH OF C AND SKIP + HRLI C,M ; RELATIVIZE + MOVEM C,PCSAV(TB) + JRST CONTIN + +UNWIN1: MOVE B,-12(TP) ; POINT TO THING TO DO UNWINDING + GETYP A,(B) + MOVSI A,(A) + MOVE B,1(B) + JSP E,CHKAB + PUSH TP,A + PUSH TP,B + MCALL 1,EVAL +UNWIN2: MOVEI C,-7(TP) ; POINT TO SAVED RET VALS + MOVE B,-10(TP) + HRRZ E,-11(TP) + PUSH P,E + HRRZ SP,(SP) ; UNBIND THIS GUY + MOVEI E,(TP) ; AND FIXUP SP + SUBI E,(SP) + MOVSI E,(E) + HLL SP,TP + SUB SP,E + JRST CHUNW ; ANY MORE TO UNWIND? + + +; CHFSWP - CHECK FRAMES VALIDITY AND SWAP PROCESS IF NECESSARY. +; CALLED BY ALL CONTROL FLOW +; ROUTINES (GO,RETURN,EXIT,AGAIN,ERRET...) + +CHFSWP: PUSHJ P,CHFRM ; CHECK FOR VALID FRAME + HRRZ D,(B) ; PROCESS VECTOR DOPE WD + HLRZ C,(D) ; LENGTH + SUBI D,-1(C) ; POINT TO TOP + MOVNS C ; NEGATE COUNT + HRLI D,2(C) ; BUILD PVP + MOVE E,PVP + MOVE C,AB + MOVE A,(B) ; GET FRAME + MOVE B,1(B) + CAMN E,D ; SKIP IF SWAP NEEDED + POPJ P, + PUSH TP,A ; SAVE FRAME + PUSH TP,B + MOVE B,D + PUSHJ P,PROCHK ; FIX UP PROCESS LISTS + MOVE A,PSTAT+1(B) ; GET STATE + CAIE A,RESMBL + JRST NOTRES + MOVE D,B ; PREPARE TO SWAP + POP P,0 ; RET ADDR + POP TP,B + POP TP,A + JSP C,SWAP ; SWAP IN + MOVE C,ABSTO+1(E) ; GET OLD ARRGS + MOVEI A,RUNING ; FIX STATES + MOVEM A,PSTAT+1(PVP) + MOVEI A,RESMBL + MOVEM A,PSTAT+1(E) + JRST @0 + +NOTRES: PUSH TP,$TATOM + PUSH TP,EQUOTE PROCESS-NOT-RESUMABLE + JRST CALER1 + + +;SETG IS USED TO SET THE GLOBAL VALUE OF ITS FIRST ARGUMENT, +;AN IDENTIFIER, TO THE VALUE OF ITS SECOND ARGUMENT. ITS VALUE IS +; ITS SECOND ARGUMENT. + +MFUNCTION SETG,SUBR + ENTRY 2 + GETYP A,(AB) ;GET TYPE OF FIRST ARGUMENT + CAIE A,TATOM ;CHECK THAT IT IS AN ATOM + JRST NONATM ;IF NOT -- ERROR + MOVE B,1(AB) ;GET POINTER TO ATOM + PUSH TP,$TATOM + PUSH TP,B + MOVEI 0,(B) + CAIL 0,HIBOT ; PURE ATOM? + PUSHJ P,IMPURIFY ; YES IMPURIFY + PUSHJ P,IGLOC ;GET LOCATIVE TO VALUE + CAMN A,$TUNBOUND ;IF BOUND + PUSHJ P,BSETG ;IF NOT -- BIND IT + MOVE C,2(AB) ; GET PROPOSED VVAL + MOVE D,3(AB) + MOVSI A,TLOCD ; MAKE SURE MONCH WINS + PUSHJ P,MONCH0 ; WOULD YOU BELIEVE MONITORS!!!! + EXCH D,B ;SAVE PTR + MOVE A,C + HRRZ E,-2(D) ; POINT TO POSSIBLE GDECL (OR MAINIFEST) + JUMPE E,OKSETG ; NONE ,OK + CAIE E,-1 ; MANIFEST? + JRST SETGTY + GETYP 0,(D) ; IF UNBOUND, LET IT HAPPEN + SKIPN IGDECL + CAIN 0,TUNBOU + JRST OKSETG +MANILO: GETYP C,(D) + GETYP 0,2(AB) + CAIN 0,(C) + CAME B,1(D) + JRST .+2 + JRST OKSETG + PUSH TP,$TVEC + PUSH TP,D + MOVE B,MQUOTE REDEFINE + PUSHJ P,ILVAL ; SEE IF REDEFINE OK + GETYP A,A + CAIE A,TUNBOU + CAIN A,TFALSE + JRST .+2 + JRST OKSTG + PUSH TP,$TATOM + PUSH TP,EQUOTE ATTEMPT-TO-CHANGE-MANIFEST-VARIABLE + PUSH TP,$TATOM + PUSH TP,1(AB) + MOVEI A,2 + JRST CALER + +SETGTY: PUSH TP,$TVEC + PUSH TP,D + MOVE C,A + MOVE D,B + GETYP A,(E) + MOVSI A,(A) + MOVE B,1(E) + JSP E,CHKAB + PUSHJ P,TMATCH + JRST TYPMI3 + +OKSTG: MOVE D,(TP) + MOVE A,2(AB) + MOVE B,3(AB) + +OKSETG: MOVEM A,(D) ;DEPOSIT INTO THE + MOVEM B,1(D) ;INDICATED VALUE CELL + JRST FINIS + +TYPMI3: MOVE C,(TP) + HRRZ C,-2(C) + MOVE D,2(AB) + MOVE B,3(AB) + MOVE 0,(AB) + MOVE A,1(AB) + JRST TYPMIS + +BSETG: HRRZ A,GLOBASE+1(TVP) + HRRZ B,GLOBSP+1(TVP) + SUB B,A + CAIL B,6 + JRST SETGIT + MOVEI B,0 ; MAKE SURE OF NO EMPTY SLOTS + PUSHJ P,IGLOC + CAMN A,$TUNBOU ; SKIP IF SLOT FOUND + JRST BSETG1 + MOVE E,(TP) ; GET ATOM + MOVEM E,-1(B) ; CLOBBER ATOM SLOT + POPJ P, +; BSETG1: PUSH TP,GLOBASE(TVP) ; MUST REALLY GROW STACK +; PUSH TP,GLOBASE+1 (TVP) +; PUSH TP,$TFIX +; PUSH TP,[0] +; PUSH TP,$TFIX +; PUSH TP,[100] +; MCALL 3,GROW +BSETG1: PUSH P,0 + PUSH P,C + MOVE C,GLOBASE+1(TVP) + HLRE B,C + SUB C,B + MOVE B,GVLINC ; GROW BY INDICATED GVAL SLOTS + DPB B,[001100,,(C)] +; MOVEM A,GLOBASE(TVP) + MOVE C,[6,,4] ; INDICATOR FOR AGC + PUSHJ P,AGC + MOVE B,GLOBASE+1(TVP) + MOVE 0,GVLINC ; ADJUST GLOBAL SPBASE + ASH 0,6 + SUB B,0 + HRLZS 0 + SUB B,0 + MOVEM B,GLOBASE+1(TVP) +; MOVEM B,GLOBASE+1(TVP) + POP P,0 + POP P,C +SETGIT: + MOVE B,GLOBSP+1(TVP) + SUB B,[4,,4] + MOVSI C,TGATOM + MOVEM C,(B) + MOVE C,(TP) + MOVEM C,1(B) + MOVEM B,GLOBSP+1(TVP) + ADD B,[2,,2] + MOVSI A,TLOCI + POPJ P, + + +MFUNCTION DEFMAC,FSUBR + + ENTRY 1 + + PUSH P,. + JRST DFNE2 + +MFUNCTION DFNE,FSUBR,[DEFINE] + + ENTRY 1 + + PUSH P,[0] +DFNE2: GETYP A,(AB) + CAIE A,TLIST + JRST WRONGT + SKIPN B,1(AB) ; GET ATOM + JRST TFA + GETYP A,(B) ; MAKE SURE ATOM + MOVSI A,(A) + PUSH TP,A + PUSH TP,1(B) + JSP E,CHKARG + MCALL 1,EVAL ; EVAL IT TO AN ATOM + CAME A,$TATOM + JRST NONATM + PUSH TP,A ; SAVE TWO COPIES + PUSH TP,B + PUSHJ P,IGVAL ; SEE IF A VALUE EXISTS + CAMN A,$TUNBOU ; SKIP IF A WINNER + JRST .+3 + PUSHJ P,ASKUSR ; CHECK WITH USER + JRST DFNE1 + PUSH TP,$TATOM + PUSH TP,-1(TP) + MOVE B,1(AB) + HRRZ B,(B) + MOVSI A,TEXPR + SKIPN (P) ; SKIP IF MACRO + JRST DFNE3 + MOVEI D,(B) ; READY TO CONS + MOVSI C,TEXPR + PUSHJ P,INCONS + MOVSI A,TMACRO +DFNE3: PUSH TP,A + PUSH TP,B + MCALL 2,SETG +DFNE1: POP TP,B ; RETURN ATOM + POP TP,A + JRST FINIS + + +ASKUSR: MOVE B,MQUOTE REDEFINE + PUSHJ P,ILVAL ; SEE IF REDEFINE OK + GETYP A,A + CAIE A,TUNBOU + CAIN A,TFALSE + JRST ASKUS1 + JRST ASKUS2 +ASKUS1: PUSH TP,$TATOM + PUSH TP,-1(TP) + PUSH TP,$TATOM + PUSH TP,EQUOTE ALREADY-DEFINED-ERRET-NON-FALSE-TO-REDEFINE + MCALL 2,ERROR + GETYP 0,A + CAIE 0,TFALSE +ASKUS2: AOS (P) + MOVE B,1(AB) + POPJ P, + + + +;SET CLOBBERS THE LOCAL VALUE OF THE IDENTIFIER GIVEN BY ITS +;FIRST ARGUMENT TO THE SECOND ARG. ITS VALUE IS ITS SECOND ARGUMENT. + +MFUNCTION SET,SUBR + HLRE D,AB ; 2 TIMES # OF ARGS TO D + ASH D,-1 ; - # OF ARGS + ADDI D,2 + JUMPG D,TFA ; NOT ENOUGH + MOVE B,PVP + MOVE C,SP + JUMPE D,SET1 ; NO ENVIRONMENT + AOJL D,TMA ; TOO MANY + GETYP A,4(AB) ; CHECK ARG IS A FRAME OR PROCESS + CAIE A,TFRAME + CAIN A,TENV + JRST SET2 ; WINNING ENVIRONMENT/FRAME + CAIN A,TACT + JRST SET2 ; TO MAKE PFISTER HAPPY + CAIE A,TPVP + JRST WTYP2 + MOVE B,5(AB) ; GET PROCESS + MOVE C,SPSTO+1(B) + JRST SET1 +SET2: MOVEI B,4(AB) ; POINT TO FRAME + PUSHJ P,CHFRM ; CHECK IT OUT + MOVE B,5(AB) ; GET IT BACK + MOVE C,SPSAV(B) ; GET BINDING POINTER + HRRZ B,4(AB) ; POINT TO PROCESS + HLRZ A,(B) ; GET LENGTH + SUBI B,-1(A) ; POINT TO START THEREOF + HLL B,PVP ; GET -LNTRH, (ALL PROCESS VECS SAME LENGTH) +SET1: PUSH TP,$TPVP ; SAVE PROCESS + PUSH TP,B + PUSH TP,$TSP ; SAVE PATH POINTER + PUSH TP,C + GETYP A,(AB) ;GET TYPE OF FIRST + CAIE A,TATOM ;ARGUMENT -- + JRST WTYP1 ;BETTER BE AN ATOM + MOVE B,1(AB) ;GET PTR TO IT + MOVEI 0,(B) + CAIL 0,HIBOT + PUSHJ P,IMPURIFY + MOVE C,(TP) + PUSHJ P,AILOC ;GET LOCATIVE TO VALUE +GOTLOC: CAMN A,$TUNBOUND ;BOUND? + PUSHJ P, BSET ;BIND IT + SUB TP,[4,,4] + MOVE C,2(AB) ; GET NEW VAL + MOVE D,3(AB) + MOVSI A,TLOCD ; FOR MONCH + HRR A,2(B) + PUSHJ P,MONCH0 ; HURRAY FOR MONITORS!!!!! + MOVE E,B + HLRZ A,2(E) ; GET DECLS + JUMPE A,SET3 ; NONE, GO + PUSH TP,$TSP + PUSH TP,E + MOVE B,1(A) + HLLZ A,(A) ; GET PATTERN + PUSHJ P,TMATCH ; MATCH TMEM + JRST TYPMI2 ; LOSES + MOVE E,(TP) + SUB TP,[2,,2] + MOVE C,2(AB) + MOVE D,3(AB) +SET3: MOVEM C,(E) ;CLOBBER IDENTIFIER + MOVEM D,1(E) + MOVE A,C + MOVE B,D + JRST FINIS +BSET: + CAMN PVP,-2(TP) ; SKIP IF PROC DIFFERS + MOVEM C,-2(TP) ; ELSE USE RESULT FROM LOC SEARCH + MOVE B,-2(TP) ; GET PROCESS + HRRZ A,TPBASE+1(B) ;GET ACTUAL STACK BASE + HRRZ B,SPBASE+1(B) ;AND FIRST BINDING + SUB B,A ;ARE THERE 6 + CAIL B,6 ;CELLS AVAILABLE? + JRST SETIT ;YES + MOVE C,(TP) ; GET POINTER BACK + MOVEI B,0 ; LOOK FOR EMPTY SLOT + PUSHJ P,AILOC + CAMN A,$TUNBOUND ; SKIP IF FOUND + JRST BSET1 + MOVE E,1(AB) ; GET ATOM + MOVEM E,-1(B) ; AND STORE + JRST BSET2 +BSET1: MOVE B,-2(TP) ; GET PROCESS +; PUSH TP,TPBASE(B) ;NO -- GROW THE TP +; PUSH TP,TPBASE+1(B) ;AT THE BASE END +; PUSH TP,$TFIX +; PUSH TP,[0] +; PUSH TP,$TFIX +; PUSH TP,[100] +; MCALL 3,GROW +; MOVE C,-2(TP) ; GET PROCESS +; MOVEM A,TPBASE(C) ;SAVE RESULT + PUSH P,0 ; MANUALLY GROW VECTOR + PUSH P,C + MOVE C,TPBASE+1(B) + HLRE B,C + SUB C,B + MOVEI C,1(C) + CAME C,TPGROW + ADDI C,PDLBUF + MOVE D,LVLINC + DPB D,[001100,,-1(C)] + MOVE C,[5,,3] ; SET UP INDICATORS FOR AGC + PUSHJ P,AGC + MOVE B,TPBASE+1(PVP) ; MODIFY POINTER + MOVE 0,LVLINC ; ADJUST SPBASE POINTER + ASH 0,6 + SUB B,0 + HRLZS 0 + SUB B,0 + MOVEM B,TPBASE+1(PVP) + POP P,C + POP P,0 +; MOVEM B,TPBASE+1(C) +SETIT: MOVE C,-2(TP) ; GET PROCESS + MOVE B,SPBASE+1(C) + MOVEI A,-6(B) ;MAKE UP BINDING + HRRM A,(B) ;LINK PREVIOUS BIND BLOCK + MOVSI A,TBIND + MOVEM A,-6(B) + MOVE A,1(AB) + MOVEM A,-5(B) + SUB B,[6,,6] + MOVEM B,SPBASE+1(C) + ADD B,[2,,2] +BSET2: MOVE C,-2(TP) ; GET PROC + MOVSI A,TLOCI + HRR A,BINDID+1(C) + HLRZ D,OTBSAV(TB) ; TIME IT + MOVEM D,2(B) ; AND FIX IT + POPJ P, + +; HERE TO ELABORATE ON TYPE MISMATCH + +TYPMI2: MOVE C,(TP) ; FIND DECLS + HLRZ C,2(C) + MOVE D,2(AB) + MOVE B,3(AB) + MOVE 0,(AB) ; GET ATOM + MOVE A,1(AB) + JRST TYPMIS + + + +MFUNCTION NOT,SUBR + ENTRY 1 + GETYP A,(AB) ; GET TYPE + CAIE A,TFALSE ;IS IT FALSE? + JRST IFALSE ;NO -- RETURN FALSE + +TRUTH: + MOVSI A,TATOM ;RETURN T (VERITAS) + MOVE B,MQUOTE T + JRST FINIS + +MFUNCTION OR,FSUBR + + PUSH P,[0] + JRST ANDOR + +MFUNCTION ANDA,FSUBR,AND + + PUSH P,[1] +ANDOR: ENTRY 1 + GETYP A,(AB) + CAIE A,TLIST + JRST WRONGT ;IF ARG DOESN'T CHECK OUT + MOVE E,(P) + SKIPN C,1(AB) ;IF NIL + JRST TF(E) ;RETURN TRUTH + PUSH TP,$TLIST ;CREATE UNNAMED TEMP + PUSH TP,C +ANDLP: + MOVE E,(P) + JUMPE C,TFI(E) ;ANY MORE ARGS? + MOVEM C,1(TB) ;STORE CRUFT + GETYP A,(C) + MOVSI A,(A) + PUSH TP,A + PUSH TP,1(C) ;ARGUMENT + JSP E,CHKARG + MCALL 1,EVAL + GETYP 0,A + MOVE E,(P) + XCT TFSKP(E) + JRST FINIS ;IF FALSE -- RETURN + HRRZ C,@1(TB) ;GET CDR OF ARGLIST + JRST ANDLP + +TF: JRST IFALSE + JRST TRUTH + +TFI: JRST IFALS1 + JRST FINIS + +TFSKP: CAIE 0,TFALSE + CAIN 0,TFALSE + +MFUNCTION FUNCTION,FSUBR + + ENTRY 1 + + MOVSI A,TEXPR + MOVE B,1(AB) + JRST FINIS + + + +MFUNCTION CLOSURE,SUBR + ENTRY + SKIPL A,AB ;ANY ARGS + JRST TFA ;NO -- LOSE + ADD A,[2,,2] ;POINT AT IDS + PUSH TP,$TAB + PUSH TP,A + PUSH P,[0] ;MAKE COUNTER + +CLOLP: SKIPL A,1(TB) ;ANY MORE IDS? + JRST CLODON ;NO -- LOSE + PUSH TP,(A) ;SAVE ID + PUSH TP,1(A) + PUSH TP,(A) ;GET ITS VALUE + PUSH TP,1(A) + ADD A,[2,,2] ;BUMP POINTER + MOVEM A,1(TB) + AOS (P) + MCALL 1,VALUE + PUSH TP,A + PUSH TP,B + MCALL 2,LIST ;MAKE PAIR + PUSH TP,A + PUSH TP,B + JRST CLOLP + +CLODON: POP P,A + ACALL A,LIST ;MAKE UP LIST + PUSH TP,(AB) ;GET FUNCTION + PUSH TP,1(AB) + PUSH TP,A + PUSH TP,B + MCALL 2,LIST ;MAKE LIST + MOVSI A,TFUNARG + JRST FINIS + + + +;ERROR COMMENTS FOR EVAL +TUPTFA: PUSH TP,$TATOM + PUSH TP,EQUOTE TOO-FEW-ARGS-FOR-ITUPLE + JRST CALER1 + +TUPTMA: PUSH TP,$TATOM + PUSH TP,EQUOTE TOO-MANY-ARGS-TO-ITUPLE + JRST CALER1 + +BADNUM: PUSH TP,$TATOM + PUSH TP,EQUOTE NEGATIVE-ARG-TO-ITUPLE + JRST CALER1 + +WTY1TP: PUSH TP,$TATOM + PUSH TP,EQUOTE FIRST-ARG-TO-ITUPLE-NOT-FIX + JRST CALER1 + +UNBOU: PUSH TP,$TATOM + PUSH TP,EQUOTE UNBOUND-VARIABLE + JRST ER1ARG + +UNAS: PUSH TP,$TATOM + PUSH TP,EQUOTE UNASSIGNED-VARIABLE + JRST ER1ARG + +BADENV: + PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-ENVIRONMENT + JRST CALER1 + +FUNERR: + PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-FUNARG + JRST CALER1 + + +MPD.0: +MPD.1: +MPD.2: +MPD.3: +MPD.4: +MPD.5: +MPD.6: +MPD.7: +MPD.8: +MPD.9: +MPD.10: +MPD.11: +MPD.12: +MPD.13: +MPD: PUSH TP,$TATOM + PUSH TP,EQUOTE MEANINGLESS-PARAMETER-DECLARATION + JRST CALER1 + +NOBODY: PUSH TP,$TATOM + PUSH TP,EQUOTE HAS-EMPTY-BODY + JRST CALER1 + +BADCLS: PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-CLAUSE + JRST CALER1 + +NXTAG: PUSH TP,$TATOM + PUSH TP,EQUOTE NON-EXISTENT-TAG + JRST CALER1 + +NXPRG: PUSH TP,$TATOM + PUSH TP,EQUOTE NOT-IN-PROG + JRST CALER1 + +NAPTL: +NAPT: PUSH TP,$TATOM + PUSH TP,EQUOTE NON-APPLICABLE-TYPE + JRST CALER1 + +NONEVT: PUSH TP,$TATOM + PUSH TP,EQUOTE NON-EVALUATEABLE-TYPE + JRST CALER1 + + +NONATM: PUSH TP,$TATOM + PUSH TP,EQUOTE NON-ATOMIC-ARGUMENT + JRST CALER1 + + +ILLFRA: PUSH TP,$TATOM + PUSH TP,EQUOTE FRAME-NO-LONGER-EXISTS + JRST CALER1 + +ILLSEG: PUSH TP,$TATOM + PUSH TP,EQUOTE ILLEGAL-SEGMENT + JRST CALER1 + +BADMAC: PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-USE-OF-MACRO + JRST CALER1 + +BADFSB: PUSH TP,$TATOM + PUSH TP,EQUOTE APPLY-OR-STACKFORM-OF-FSUBR + JRST CALER1 + + +ER1ARG: PUSH TP,(AB) + PUSH TP,1(AB) + MOVEI A,2 + JRST CALER + +END + TITLE OPEN - CHANNEL OPENER FOR MUDDLE + +RELOCATABLE + +;C. REEVE MARCH 1973 + +.INSRT MUDDLE > + +SYSQ + +IFE ITS,[ +IF1, .INSRT MUDSYS;STENEX > +] +;THIS PROGRAM HAS ENTRIES: FOPEN, FCLOSE, RENAME, READB, PRINTB, FILECOPY, READSTRING, +; PRINTSTRING, NETSTATE, NETACC, NETS, AND ACCESS. + +;THESE SUBROUTINES HANDLE I/O STREAMS FOR THE MUDDLE SYSTEM. + +; FOPEN - OPENS A FILE FOR EITHER READING OR WRITING. IT TAKES +; FIVE OPTINAL ARGUMENTS AS FOLLOWS: + +; FOPEN (,,,,) +; +; - DIRECTION EITHER READ (INPUT) OR PRINT (OUPUT). DEFAULT IS READ + +; - FIRST FILE NAME. DEFAULT INPUT OR OUTPUT. + +; - SECOND FILE NAME. DEFAULT MUDDLE. + +; - DEVICE FROM WHICH TO OPEN. DEFAULT IS DSK. + +; - SYSTEM (DIRECTORY) NAME. DEFAULT UNAME. + +; FOPEN RETURNS AN OBJECT OF TYPE CHANNEL IF IT SUCCEEDS OTHERWISE NIL + + +; FCLOSE - CLOSES A FILE. TAKES A CHANNEL OBJECT AS ITS ARGUMENT. IT ALSO TAKES +; ACCESS - DOES A .ACCESS ON A CHARACTER BASIS FOR CHARACTER FILES + + +; A CHANNEL OBJECT IS A VECTOR CONTAINIG THE FOLLOWING INFORMATION + +; CHANNO ;ITS I/O CHANNEL NUMBER. 0 MEANS NOT A REAL CHANNEL. +; DIRECT ;DIRECTION (EITHER READ OR PRINT) +; NAME1 ;FIRST NAME OF FILE AS OPENED. +; NAME2 ;SECOND NAME OF FILE +; DEVICE ;DEVICE UPON WHICH THE CHANNEL IS OPEN +; SNAME ;DIRECTORY NAME +; RNAME1 ;REAL FIRST NAME (AS RETURNED BY READING CHANNEL STATUS) +; RNAME2 ;REAL SECOND NAME +; RDEVIC ;REAL DEVICE +; RSNAME ;SYSTEM OR DIRECTORY NAME +; STATUS ;VARIOUS STATUS BITS +; IOINS ;INSTRUCTION EXECUTED TO INPUT OR OUTPUT ONE CHARACTER +; ACCESS ;ACCESS POINTER FOR RAND ACCESS (OR USED FOR DISPLAY INFO) +; RADX ;RADIX FOR CHANNELS NUMBER CONVERSION + +; *** THE FOLLOWING FIELDS FOR OUTPUT ONLY *** +; LINLN ;LENGTH OF A LINE IN CHARACTERS FOR THIS DEVICE +; CHRPOS ;CURRENT POSITION ON CURRENT LINE +; PAGLN ;LENGTH OF A PAGE +; LINPOS ;CURRENT LINE BEING WRITTEN ON + +; *** THE FOLLOWING FILEDS FOR INPUT ONLY *** +; EOFCND ;GETS EVALUATED ON EOF +; LSTCH ;BACKUP CHARACTER +; WAITNS ;FOR TTY INPUT, BECOMES A .SLEEP WHEN WAITING +; EXBUFR ;FOR TTY INPUT, CONTAINS A WAITING BUFFER LIST +; BUFSTR ;A CHARACTER STRING USED AS BUFFER FOR NON-TTY DEVICES + +; THIS DEFINES THE LENGTH OF THE NON-TTY BUFFER +BUFLNT==100 + +;THIS DEFINES BLOCK MODE BIT FOR OPENING +BLOCKM==2 ;DEFINED IN THE LEFT HALF +IMAGEM==4 + + +;THIS IRP DEFINES THE FIELDS AT ASSEMBLY TIME + + CHANLNT==4 ;INITIAL CHANNEL LENGTH + +; BUILD A PROTOTYPE CHANNEL AND DEFINE FILEDS +BUFRIN==-1 ;SPECIAL HACK SO LOSERS WON'T SEE TTY BUFFER +SCRPTO==-3 ;SPECIAL HACK FOR SCRIPT CHANNELS +PROCHN: + +IRP A,,[[CHANNO,FIX],[DIRECT,CHSTR] +[NAME1,CHSTR],[NAME2,CHSTR],[DEVICE,CHSTR],[SNAME,CHSTR] +[RNAME1,CHSTR],[RNAME2,CHSTR],[RDEVIC,CHSTR],[RSNAME,CHSTR] +[STATUS,FIX],[IOINS,FIX],[LINLN,FIX],[CHRPOS,FIX],[PAGLN,FIX],[LINPOS,FIX] +[ACCESS,FIX],[RADX,FIX],[BUFSTR,CHSTR]] + + IRP B,C,[A] + B==CHANLNT-3 + T!C,,0 + 0 + .ISTOP + TERMIN + CHANLNT==CHANLNT+2 +TERMIN + + +; EQUIVALANCES FOR CHANNELS + +EOFCND==LINLN +LSTCH==CHRPOS +WAITNS==PAGLN +EXBUFR==LINPOS +DISINF==BUFSTR ;DISPLAY INFO +INTFCN==BUFSTR ;FUNCTION (OR SUBR, OR RSUBR) TO BE APPLIED FOR INTERNAL CHNLS + + +;DEFINE VARIABLES ASSOCIATED WITH TTY BUFFERS + +IRP A,,[IOIN2,ECHO,CHRCNT,ERASCH,KILLCH,BRKCH,ESCAP,SYSCHR,BRFCHR,BRFCH2,BYTPTR] +A==.IRPCNT +TERMIN + +EXTBFR==BYTPTR+1+<100./5> ;LENGTH OF ADD'L BUFFER + + + + +.GLOBAL IPNAME,MOPEN,MCLOSE,MIOT,ILOOKU,6TOCHS,ICLOS,OCLOS,RGPARS,RGPRS +.GLOBAL OPNCHN,CHMAK,READC,TYO,SYSCHR,BRFCHR,LSTCH,BRFCH2,EXTBFR +.GLOBAL CHRWRD,STRTO6,TTYBLK,WAITNS,EXBUFR,TTICHN,TTOCHN,GETCHR +.GLOBAL CHANNO,STATUS,LINPOS,PAGLN,CHRPOS,LINLN,IOINS,ACCESS +.GLOBAL DIRECT,DISINF,RADX,EOFCND,BUFSTR,MODE1,MODE2,GCHACK,GMTYO +.GLOBAL T.CHAN,NAME1,BFCLOS,DOIOTI,DOIOTO,DOACCS,NOTTY,BYTDOP,TNXIN +.GLOBAL DISOPN,DISROP,DISCLS,DCHAR,DISLNL,DISPGL,INSTAT,MTYO +.GLOBAL ECHO,ERASCH,KILLCH,BRKCH,BYTPTR,SYSCHR,CHRCNT,ESCAP,N.CHNS +.GLOBAL REOPN,QUITTE,CHNL0,CHNL1,BUFRIN,IOIN2,IFALSE,GFALS,IDVAL +.GLOBAL BADCHN,WRONGD,CHNCLS,GSNAME,GIBLOK,APLQ,NAPT,ICONS,INCONS,IBLOCK,IDVAL1 +.GLOBAL GRB,GWB,R1CHAR,W1CHAR,BFCLS1,TTYOP2,MPOPJ,COMPER,R1C,W1C,WXCT,RXCT +.GLOBAL TMTNXS,TNXSTR,RDEVIC + + +.VECT.==40000 + +; PAIR MOVING MACRO + +DEFINE PMOVEM A,B + MOVE 0,A + MOVEM 0,B + MOVE 0,A+1 + MOVEM 0,B+1 + TERMIN + +; DEFINITIONS OF THE OFFSETS INTO THE TP STACK FOR OPEN + +T.SPDL==0 ; SAVES P STACK BASE +T.DIR==2 ; CONTAINS DIRECTION AND MODE +T.NM1==4 ; NAME 1 OF FILE +T.NM2==6 ; NAME 2 OF FILE +T.DEV==10 ; DEVICE NAME +T.SNM==12 ; SNAME +T.XT==14 ; EXTRA CRUFT IF NECESSARY +T.CHAN==16 ; CHANNEL AS GENERATED + +; OFFSETS FROM PSTACK BASE (USED FOR OPENS, .RCHST AND .FDELES) + +S.DIR==0 ; CODE FOR DIRECTION 0-IN, 1-OUT, 2-BIN, 3-BOUT,4-DISPLAY +IFN ITS,[ +S.DEV==1 ; SIXBIT DEVICE RIGHT JUSTIFIED +S.NM1==2 ; SIXBIT NAME1 +S.NM2==3 ; SIXBIT NAME2 +S.SNM==4 ; SIXBIT SNAME +S.X1==5 ; TEMPS +S.X2==6 +S.X3==7 +] + +IFE ITS,[ +S.DEV==1 +S.X1==2 +S.X2==3 +S.X3==4 +] + + +; FLAGS SPECIFYING STATE OF THE WORLD AT VARIOUS TIMES + +NOSTOR==400000 ; ON MEANS DONT BUILD NEW STRINGS +MSTNET==200000 ; ON MEANS ONLY THE "NET" DEVICE CAN WIN +SNSET==100000 ; FLAG, SNAME SUPPLIED +DVSET==040000 ; FLAG, DEV SUPPLIED +N2SET==020000 ; FLAG, NAME2 SET +N1SET==010000 ; FLAG, NAME1 SET + +RMT [EXPUNGE N1SET,N2SET,DVSET,SNSET,MSTNET,NOSTOR +] + + +; TABLE OF LEGAL MODES + +MODES: IRP A,,[READ,PRINT,READB,PRINTB,DISPLAY] + SIXBIT /A/ + TERMIN +NMODES==.-MODES + +; TABLE OF KNOWN DEVICES AND A POINTER TO THEIR OPENERS + +IFN ITS,[ + +DEVS: IRP A,,[DSK,TPL,SYS,COM,TTY,USR,STY,[ST ],NET,DIS,E&S,INT,PTP,PTR +[P ],[DK ],[UT ],[T ],NUL,[AI ] +[ML ],[DM ],[AR ],ARC]B,,[ODSK,ODSK,ODSK,ODSK,OTTY,OUSR,OSTY,OSTY,ONET,ODIS,ODIS +OINT,OPTP,OPTP,ODSK,ODSK,OUTN,OTTY,ONUL,ODSK,ODSK,ODSK,ODSK,ODSK] + B,,(SIXBIT /A/) + TERMIN +] +IFE ITS,[ +DEVS: IRP A,,[DSK,TTY,INT,NET]B,,[ODSK,OTTY,OINT,ONET] + B,,(SIXBIT /A/) + TERMIN +] +NDEVS==.-DEVS + + + +;SUBROUTINE TO DO OPENING BEGINS HERE + +MFUNCTION NFOPEN,SUBR,[OPEN-NR] + + JRST FOPEN1 + +MFUNCTION FOPEN,SUBR,[OPEN] + +FOPEN1: ENTRY + PUSHJ P,MAKCHN ;MAKE THE CHANNEL + PUSHJ P,OPNCH ;NOW OPEN IT + JRST FINIS + +; SUBR TO JUST CREATE A CHANNEL + +MFUNCTION CHANNEL,SUBR + + ENTRY + PUSHJ P,MAKCHN + MOVSI A,TCHAN + JRST FINIS + + + + +; THIS ROUTINE PARSES ARGUMENTS TO FOPEN ETC. AND BUILDS A CHANNEL BUT DOESN'T OPEN IT + +MAKCHN: PUSH TP,$TPDL + PUSH TP,P ; POINT AT CURRENT STACK BASE + PUSH TP,$TCHSTR + PUSH TP,CHQUOTE READ + MOVEI E,10 ; SLOTS OF TP NEEDED + PUSH TP,[0] + SOJG E,.-1 + MOVEI E,0 + EXCH E,(P) ; GET RET ADDR IN E +IFE ITS, PUSH P,[0] +IRP ATM,,[DEV,NM1,NM2,SNM]MDF,,[DSK,INPUT,>,[ ]]TMDF,,[DSK,INPUT,MUD,[ ]] + MOVE B,IMQUOTE ATM +IFN ITS, PUSH P,E + PUSHJ P,IDVAL1 + GETYP 0,A + CAIN 0,TCHSTR + JRST MAK!ATM + + MOVE A,$TCHSTR +IFN ITS, MOVE B,CHQUOTE MDF +IFE ITS, MOVE B,CHQUOTE TMDF +MAK!ATM: + MOVEM A,T.!ATM(TB) + MOVEM B,T.!ATM+1(TB) +IFN ITS,[ + POP P,E + PUSHJ P,STRTO6 ; RESULT LEFT ON P STACK AS DESIRED +] + TERMIN + PUSH TP,[0] ; PUSH SLOTS + PUSH TP,[0] + + PUSH P,[0] ; EXT SLOTS + PUSH P,[0] + PUSH P,[0] + PUSH P,E ; PUSH RETURN ADDRESS + MOVEI A,0 + + JUMPGE AB,MAKCH0 ; NO ARGS, ALREADY DONE + GETYP 0,(AB) ; 1ST ARG MUST BE A STRING + CAIE 0,TCHSTR + JRST WTYP1 + MOVE A,(AB) ; GET ARG + MOVE B,1(AB) + PUSHJ P,CHMODE ; CHECK OUT OPEN MODE + + PMOVEM (AB),T.DIR(TB) ; SAVE MODE NAME IN TEMPS + ADD AB,[2,,2] ; BUMP PAST DIRECTION + MOVEI A,0 + JUMPGE AB,MAKCH0 ; CHECK NAME1 BASED ON JUST MODE + + MOVEI 0,0 ; FLAGS PRESET + PUSHJ P,RGPARS ; PARSE THE STRING(S) + JRST TMA + +; ARGUMENTS PARSED, DO FINAL CHECKS AND BUILD CHANNEL + +MAKCH0: +IFN ITS,[ + MOVE C,T.SPDL+1(TB) + HLRZS D,S.DEV(C) ; GET DEV +] +IFE ITS,[ + MOVE A,T.DEV(TB) + MOVE B,T.DEV+1(TB) + PUSHJ P,STRTO6 + POP P,D + HLRZS D + MOVE C,T.SPDL+1(TB) + MOVEM D,S.DEV(C) +] + CAIE D,(SIXBIT /INT/); INTERNAL? + JRST CHNET ; NO, MAYBE NET + SKIPN T.XT+1(TB) ; WAS FCN SUPPLIED? + JRST TFA + +; FALLS TROUGH IF SKIP + + + +; NOW BUILD THE CHANNEL + +ARGSOK: MOVEI A,CHANLNT ; GET LENGTH + PUSHJ P,GIBLOK ; GET A BLOCK OF STUFF + ADD B,[4,,4] ; HIDE THE TTY BUFFER SLOT + PUSH TP,$TCHAN + PUSH TP,B + HRLI C,PROCHN ; POINT TO PROTOTYPE + HRRI C,(B) ; AND NEW ONE + BLT C,CHANLN-5(B) ; CLOBBER + MOVSI C,TLIST ; TO GIVE HIM A CLEAN LIST OF SCRIPT CHANS + MOVEM C,SCRPTO-1(B) + +; NOW BLT IN STUFF FROM THE STACK + + MOVSI C,T.DIR(TB) ; DIRECTION + HRRI C,DIRECT-1(B) + BLT C,SNAME(B) + MOVEI C,RNAME1-1(B) ; NOW "REAL" SLOTS + HRLI C,T.NM1(TB) + BLT C,RSNAME(B) + POPJ P, + +; HERE TO VALIDIFY ARGUMENTS FOR A NET OPEN + +CHNET: CAIE D,(SIXBIT /NET/) ; IS IT NET +IFN ITS, JRST MAKCH1 +IFE ITS,[ + JRST ARGSOK +] + MOVSI D,TFIX ; FOR TYPES + MOVEI B,T.NM1(TB) ; MAKE SURE ALL ARE FIXED + PUSHJ P,CHFIX + MOVEI B,T.NM2(TB) + PUSHJ P,CHFIX + MOVEI B,T.SNM(TB) + LSH A,-1 ; SKIP DEV FLAG + PUSHJ P,CHFIX + JRST ARGSOK + +MAKCH1: TRNN A,MSTNET ; CANT HAVE SEEN A FIX + JRST ARGSOK + JRST WRONGT + +IFN ITS,[ +CHFIX: TRNE A,N1SET ; SKIP IF NOT SPECIFIED + JRST CHFIX1 +] + SETOM 1(B) ; SET TO -1 + SETOM S.NM1(C) + MOVEM D,(B) ; CORRECT TYPE +IFE ITS,CHFIX: + GETYP 0,(B) + CAIE 0,TFIX + JRST PARSQ +CHFIX1: ADDI C,1 ; POINT TO NEXT FIELD + LSH A,-1 ; AND NEXT FLAG + POPJ P, +PARSQ: CAIE 0,TCHSTR + JRST WRONGT +IFE ITS, POPJ P, +IFN ITS,[ + PUSH P,A + PUSH P,C + PUSH TP,(B) + PUSH TP,1(B) + SUBI B,(TB) + PUSH P,B + MCALL 1,PARSE + GETYP 0,A + CAIE 0,TFIX + JRST WRONGT + POP P,C + ADDI C,(TB) + MOVEM A,(C) + MOVEM B,1(C) + POP P,C + POP P,A + POPJ P, +] + + +; SUBROUTINE TO CHECK VALIDITY OF MODE AND SAVE A CODE + +CHMODE: PUSHJ P,CHMOD ; DO IT + MOVE C,T.SPDL+1(TB) + HRRZM A,S.DIR(C) + POPJ P, + +CHMOD: PUSHJ P,STRTO6 ; TO SIXBIT + POP P,B ; VALUE ENDSUP ON STACK, RESTORE IT + + CAME B,[SIXBIT /PRINTO/] ; KLUDGE TO MAKE PRINTO AS PRINTB + JRST .+3 + MOVEI A,3 ; CODE FOR PRINTB + POPJ P, + + MOVSI A,-NMODES ; SCAN TO SEE IF LEGAL MODE + CAME B,MODES(A) + AOBJN A,.-1 + JUMPGE A,WRONGD ; ILLEGAL MODE NAME + POPJ P, + +IFN ITS,[ +; RGPARS -- PARSE THE STRINGS COMPRISING FILE NAMES INTO STANDARD ITS GOODIES + +RGPRS: MOVEI 0,NOSTOR ; DONT STORE STRINGS IF ENTER HERE + +RGPARS: HRLM 0,(P) ; LH IS FLAGS FOR THIS PROG + MOVSI E,-4 ; FIELDS TO FILL + +RPARGL: GETYP 0,(AB) ; GET TYPE + CAIE 0,TCHSTR ; STRING? + JRST ARGCLB ; NO, JUST CLOBBER IT IN RAW + JUMPGE E,CPOPJ ; DON'T DO ANY MORE + PUSH TP,(AB) ; GET AN ARG + PUSH TP,1(AB) + +FPARS: PUSH TP,-1(TP) ; ANOTHER COPY + PUSH TP,-1(TP) + PUSHJ P,FLSSP ; NO LEADING SPACES + MOVEI A,0 ; WILL HOLD SIXBIT + MOVEI B,6 ; CHARS PER 6BIT WORD + MOVE C,[440600,,A] ; BYTE POINTER INTO A + +FPARSL: HRRZ 0,-1(TP) ; GET COUNT + JUMPE 0,PARSD ; DONE + SOS -1(TP) ; COUNT + ILDB 0,(TP) ; CHAR TO 0 + + CAIE 0," ; FILE NAME QUOTE? + JRST NOCNTQ + HRRZ 0,-1(TP) + JUMPE 0,PARSD + SOS -1(TP) + ILDB 0,(TP) ; USE THIS + JRST GOTCNQ + +NOCNTQ: CAIG 0,40 ; SPACE? + JRST NDFLD ; YES, TERMINATE THIS FIELD + CAIN 0,": ; DEVICE ENDED? + JRST GOTDEV + CAIN 0,"; ; SNAME ENDED + JRST GOTSNM + +GOTCNQ: PUSHJ P,A0TO6 ; CONVERT TO 6BIT AND CHECK + + JUMPE B,FPARSL ; IGNORE IF AREADY HAVE 6 + IDPB 0,C + SOJA B,FPARSL + +; HERE IF SPACE ENCOUNTERED + +NDFLD: MOVEI D,(E) ; COPY GOODIE + PUSHJ P,FLSSP ; FLUSH REDUNDANT SPACES + JUMPE 0,PARSD ; NO CHARS LEFT + +NFL0: PUSH P,A ; SAVE SIXBIT WORD + PUSHJ P,6TOCHS ; CONVERT TO STRING + HRRZ 0,-1(TP) ; RESTORE CHAR COUNT + +NFL2: MOVEI C,(D) ; COPY REL PNTR + SKIPGE -1(P) ; SKIP IF STRINGS TO BE STORED + JRST NFL3 + ASH D,1 ; TIMES 2 + ADDI D,T.NM1(TB) + MOVEM A,(D) ; STORE + MOVEM B,1(D) +NFL3: MOVSI A,N1SET ; FLAG IT + LSH A,(C) + IORM A,-1(P) ; AND CLOBBER + MOVE D,T.SPDL+1(TB) ; GET P BASE + POP P,@SIXTBL(C) ; AND STORE SIXBIT OF IT + + POP TP,-2(TP) ; MAKE NEW STRING POINTER + POP TP,-2(TP) + JUMPE 0,.+3 ; SKIP IF NO MORE CHARS + AOBJN E,FPARS ; MORE TO PARSE? +CPOPJ: POPJ P, ; RETURN, ALL DONE + + SUB TP,[2,,2] ; FLUSH OLD STRING + ADD E,[1,,1] + ADD AB,[2,,2] ; BUMP ARG + JUMPL AB,RPARGL ; AND GO ON +CPOPJ1: AOS A,(P) ; PREPARE TO WIN + HLRZS A + POPJ P, + + + +; HERE IF STRING HAS ENDED + +PARSD: PUSH P,A ; SAVE 6 BIT + MOVE A,-3(TP) ; CAN USE ARG STRING + MOVE B,-2(TP) + MOVEI D,(E) + JRST NFL2 ; AND CONTINUE + +; HERE IF JUST READ DEV + +GOTDEV: MOVEI D,2 ; CODE FOR DEVICE + JRST GOTFLD ; GOT A FIELD + +; HERE IF JUST READ SNAME + +GOTSNM: MOVEI D,3 +GOTFLD: PUSHJ P,FLSSP + SOJA E,NFL0 + + +; HERE FOR NON STRING ARG ENCOUNTERED + +ARGCLB: SKIPGE (P) ; IF NOT STORING, CONSIDER THIS THE END + + POPJ P, + MOVE C,T.SPDL+1(TB) ; GET P-BASE + HLRZ A,S.DEV(C) ; GET DEVICE + CAIE A,(SIXBIT /INT/) ; IS IT THE INTERNAL DEVICE + JRST TRYNET ; NO, COUD BE NET + MOVE A,0 ; OFFNEDING TYPE TO A + PUSHJ P,APLQ ; IS IT APPLICABLE + JRST NAPT ; NO, LOSE + PMOVEM (AB),T.XT(TB) + ADD AB,[2,,2] ; MUST BE LAST ARG + JUMPL AB,TMA + JRST CPOPJ1 ; ELSE SUCCESSFUL RETURN +TRYNET: CAIE 0,TFIX ; FOR NET DEV, ARGS MUST BE FIX + JRST WRONGT ; TREAT AS WRONG TYPE + MOVSI A,MSTNET ; BETTER BE NET EVENTUALLY + IORM A,(P) ; STORE FLAGS + MOVSI A,TFIX + MOVE B,1(AB) ; GET NUMBER + MOVEI 0,(E) ; MAKE SURE NOT DEVICE + CAIN 0,2 + JRST WRONGT + PUSH P,B ; SAVE NUMBER + MOVEI D,(E) ; SET FOR TABLE OFFSETS + MOVEI 0,0 + ADD TP,[4,,4] + JRST NFL2 ; GO CLOBBER IT AWAY +] + + +; ROUTINE TO FLUSH LEADING SPACES FROM A FIELD + +FLSSP: HRRZ 0,-1(TP) ; GET CHR COUNNT + JUMPE 0,CPOPJ ; FINISHED STRING +FLSS1: MOVE B,(TP) ; GET BYTR + ILDB C,B ; GETCHAR + CAILE C,40 + JRST FLSS2 + MOVEM B,(TP) ; UPDATE BYTE POINTER + SOJN 0,FLSS1 + +FLSS2: HRRM 0,-1(TP) ; UPDATE STRING + POPJ P, + +IFN ITS,[ +;TABLE FOR STFUFFING SIXBITS AWAY + +SIXTBL: S.NM1(D) + S.NM2(D) + S.DEV(D) + S.SNM(D) + S.X1(D) +] + +RDTBL: RDEVIC(B) + RNAME1(B) + RNAME2(B) + RSNAME(B) + + + +IFE ITS,[ + +; TENEX VERSION OF FILE NAME PARSER (ONLY ACCEPT ARGS IN SINGLE STRING) + +RGPRS: MOVEI 0,NOSTOR + +RGPARS: HRLM 0,(P) ; SAVE FOR STORE CHECKING + CAMGE AB,[-7,,] ; MULTI-STRING CASE POSSIBLE? + JRST TN.MLT ; YES, GO PROCESS +RGPRSS: GETYP 0,(AB) ; CHECK ARG TYPE + CAIE 0,TCHSTR + JRST WRONGT ; FOR NOW ONLY STRING ARGS WIN + PUSH TP,(AB) + PUSH TP,1(AB) + PUSHJ P,FLSSP ; FLUSH LEADING SPACES + PUSHJ P,RGPRS1 + ADD AB,[2,,2] +CHKLST: JUMPGE AB,CPOPJ1 + SKIPGE (P) ; IF FROM OPEN, ALLOW ONE MORE + POPJ P, + PMOVEM (AB),T.XT(TB) + ADD AB,[2,,2] + JUMPL AB,TMA +CPOPJ1: AOS (P) + POPJ P, + +RGPRS1: PUSH P,[0] ; ALLOW A DEVICE SPEC +TN.SNM: MOVE A,(TP) + HRRZ 0,-1(TP) + JUMPE 0,RPDONE + ILDB A,A + CAIE A,"< ; START "DIRECTORY" ? + JRST TN.N1 ; NO LOOK FOR NAME1 + SETOM (P) ; DEV NOT ALLOWED + IBP (TP) ; SKIP CHAR + SOS -1(TP) + PUSHJ P,TN.CNT ; COUNT CHARS TO ">" + JUMPE B,ILLNAM ; RAN OUT + CAIE A,"> ; SKIP IF WINS + JRST ILLNAM + PUSHJ P,TN.CPS ; COPY TO NEW STRING + MOVEM A,T.SNM(TB) + MOVEM B,T.SNM+1(TB) + +TN.N1: PUSHJ P,TN.CNT + JUMPE B,RPDONE + CAIE A,": ; GOT A DEVICE + JRST TN.N11 + SKIPE (P) + JRST ILLNAM + SETOM (P) + PUSHJ P,TN.CPS + MOVEM A,T.DEV(TB) + MOVEM B,T.DEV+1(TB) + JRST TN.SNM ; NOW LOOK FOR SNAME + +TN.N11: CAIE A,"> + CAIN A,"< + JRST ILLNAM + MOVEM A,(P) ; SAVE END CHAR + PUSHJ P,TN.CPS ; GEN STRING + MOVEM A,T.NM1(TB) + MOVEM B,T.NM1+1(TB) + +TN.N2: SKIPN A,(P) ; GET CHAR BACK + JRST RPDONE + CAIN A,"; ; START VERSION? + JRST .+3 + CAIE A,". ; START NAME2? + JRST ILLNAM ; I GIVE UP!!! + HRRZ B,-1(TP) ; GET RMAINS OF STRING + PUSHJ P,TN.CPS ; AND COPY IT + MOVEM A,T.NM2(TB) + MOVEM B,T.NM2+1(TB) +RPDONE: SUB P,[1,,1] ; FLUSH TEMP + SUB TP,[2,,2] +CPOPJ: POPJ P, + +TN.CNT: HRRZ 0,-1(TP) ; CHAR COUNT + MOVE C,(TP) ; BPTR + MOVEI B,0 ; INIT COUNT TO 0 + +TN.CN1: MOVEI A,0 ; IN CASE RUN OUT + SOJL 0,CPOPJ ; RUN OUT? + ILDB A,C ; TRY ONE + CAIE A," ; TNEX FILE QUOTE? + JRST TN.CN2 + SOJL 0,CPOPJ + IBP C ; SKIP QUOTED CHAT + ADDI B,2 + JRST TN.CN1 + +TN.CN2: CAIE A,"< + CAIN A,"> + POPJ P, + + CAIE A,". + CAIN A,"; + POPJ P, + CAIN A,": + POPJ P, + AOJA B,TN.CN1 + +TN.CPS: PUSH P,B ; # OF CHARS + MOVEI A,4(B) ; ADD 4 TO B IN A + IDIVI A,5 + PUSHJ P,IBLOCK ; GET BLOCK OF WORDS FOR STRING + + POP P,C ; CHAR COUNT BACK + HRLI B,440700 + MOVSI A,TCHSTR + HRRI A,(C) ; CHAR STRING + MOVE D,B ; COPY BYTER + + JUMPE C,CPOPJ + ILDB 0,(TP) ; GET CHAR + IDPB 0,D ; AND STROE + SOJG C,.-2 + + MOVNI C,(A) ; - LENGTH TO C + ADDB C,-1(TP) ; DECREMENT WORDS COUNT + TRNN C,-1 ; SKIP IF EMPTY + POPJ P, + IBP (TP) + SOS -1(TP) ; ELSE FLUSH TERMINATOR + POPJ P, + +ILLNAM: PUSH TP,$TATOM + PUSH TP,EQUOTE ILLEGAL-TENEX-FILE-NAME + JRST CALER1 + +TN.MLT: MOVEI A,(AB) + HRLI A,-10 + +TN.ML1: GETYP 0,(A) + CAIE 0,TFIX + CAIN 0,TCHSTR + JRST .+2 + JRST RGPRSS ; ASSUME SINGLE STRING + ADD A,[2,,2] + JUMPL A,TN.ML1 + + MOVEI A,T.NM1(TB) + HRLI A,(AB) + BLT A,T.SNM+1(TB) ; BLT 'EM IN + ADD AB,[10,,10] ; SKIP THESE GUYS + JRST CHKLST + +] + + +; ROUTINE TO OPEN A CHANNEL FOR ANY DEVICE. NAMES ARE ASSUMED TO ALREADY +; BE ON BOTH TP STACK AND P STACK + +OPNCH: MOVE C,T.SPDL+1(TB) ; GET PDL BASE + HRRZ A,S.DIR(C) + ANDI A,1 ; JUST WANT I AND O + HRLM A,S.DEV(C) +; .TRANS S.DEV(C) ; UNDO ANY TRANSLATIONS +; JRST TRLOST ; COMPLAIN + + HRRZ A,S.DEV(C) ; GET SIXBIT DEVICE CODE + MOVEI E,(A) ; COPY TO E + ANDI E,777700 ; WITHOUT LAST + MOVEI D,(E) ; AND D + ANDI D,770000 ; WITH JUST LETTER + MOVSI B,-NDEVS ; AOBJN COUNTER + +DEVLP: HRRZ 0,DEVS(B) ; GET ONE + CAIN 0,(A) ; FULL DEV? + JRST DISPA + CAIN 0,(D) ; ONE LETTER + JRST CH2DIG + CAIN 0,(E) ; 2 LTTERS + JRST CH1DIG +NXTDEV: AOBJN B,DEVLP ; LOOP THRU + +IFN ITS,[ +OUSR: HRRZ A,S.DIR(C) ; BLOCK OR UNIT? + TRNE A,2 ; SKIP IF UNIT + JRST ODSK + PUSHJ P,OPEN1 ; OPEN IT + PUSHJ P,FIXREA ; AND READCHST IT + MOVE B,T.CHAN+1(TB) ; RESTORE CHANNEL + MOVE 0,[PUSHJ P,DOIOT] ; GET AN IOINS + MOVEM 0,IOINS(B) + MOVE C,T.SPDL+1(TB) + HRRZ A,S.DIR(C) + TRNN A,1 + JRST EOFMAK + MOVEI 0,80. + MOVEM 0,LINLN(B) + JRST OPNWIN + +OSTY: HLRZ A,S.DEV(C) + IORI A,10 ; THE DONT LOSE BIT (DONT HANG ON INPUT DO ON OUTPUT) + HRLM A,S.DEV(C) + JRST OUSR +] +IFE ITS,[ + PUSH TP,$TATOM + PUSH TP,EQUOTE NO-SUCH-DEVICE? + JRST CALER1 +] + +; MAKE SURE DIGITS EXIST + +CH2DIG: LDB 0,[60600,,A] + CAIG 0,'9 ; CHECK DIGITNESS + CAIGE 0,'0 + JRST NXTDEV ; LOSER + +CH1DIG: LDB 0,[600,,A] ; LAST CHAR + CAIG 0,'9 + CAIGE 0,'0 + JRST NXTDEV + +; HERE TO DISPATCH IF SUCCESSFUL + +DISPA: HLRZ B,DEVS(B) +IFN ITS,[ + HRRZ A,S.DIR(C) ; GET DIR OF OPEN + CAIN A,5 ; IS IT DISPLAY + CAIN B,ODIS ; BETTER BE OPENING DISPLAY + JRST (B) ; GO TO HANDLER + JRST WRONGD +] +IFE ITS, JRST (B) + + +IFN ITS,[ + +; DISK DEVICE OPNER COME HERE + +ODSK: MOVE A,S.SNM(C) ; GET SNAME + .SUSET [.SSNAM,,A] ; CLOBBER IT + PUSHJ P,OPEN0 ; DO REAL LIVE OPEN +] +IFE ITS,[ + +; TENEX DISK FILE OPENER + +ODSK: MOVE B,T.CHAN+1(TB) ; GET CHANNEL + PUSHJ P,STSTK ; EXPAND STRING ONTO STACK (E POINTS TO OLD P) + MOVE A,DIRECT-1(B) + MOVE B,DIRECT(B) + PUSHJ P,STRTO6 ; GET DIR NAME + POP P,C + MOVE D,T.SPDL+1(TB) + HRRZ D,S.DIR(D) + CAMN C,[SIXBIT /PRINTO/] + IORI D,100 ; TURN ON BIT TO SAY USE OLD FILE + MOVSI A,101 ; START SETTING UP BITS EXTRA BIT FOR MSB + TRNE D,1 ; SKIP IF INPUT + TRNE D,100 ; WITE OVER? + TLOA A,100000 ; FORCE NEW VERSION + TLO A,400000 ; FORCE OLD + HRROI B,1(E) ; POIT TO STRING + GTJFN + TDZA 0,0 ; SAVE FACT OF NO SKIP + MOVEI 0,1 ; INDICATE SKIPPED + MOVE P,E ; RESTORE PSTACK + JUMPE 0,GTJLOS ; FIND OUT WHAT HAPPENED + + MOVE B,T.CHAN+1(TB) ; GET CHANNEL + HRRZM A,CHANNO(B) ; SAVE IT + ANDI A,-1 ; READ Y TO DO OPEN + MOVSI B,440000 ; USE 36. BIT BYES + HRRI B,200000 ; ASSUME READ + TRNE D,1 ; SKIP IF READ + HRRI B,300000 ; WRITE BIT + HRRZ 0,FSAV(TB) ; SEE IF REF DATE HACK + CAIN 0,NFOPEN + TRO B,400 ; SET DON'T MUNG REF DATE BIT + OPENF + JRST OPFLOS + MOVEI 0,C.OPN+C.READ + TRNE D,1 ; SKIP FOR READ + MOVEI 0,C.OPN+C.PRIN + MOVE B,T.CHAN+1(TB) + HRRM 0,-4(B) ; MUNG THOSE BITS + ASH A,1 ; POINT TO SLOT + ADDI A,CHNL0(TVP) ; TO REAL SLOT + MOVEM B,1(A) ; SAVE CHANNEL + PUSHJ P,TMTNXS ; GET STRING FROM TENEX + MOVE B,CHANNO(B) ; JFN TO A + HRROI A,1(E) ; BASE OF STRING + MOVE C,[111111,,140001] ; WEIRD CONTROL BITS + JFNS ; GET STRING + MOVEI B,1(E) ; POINT TO START OF STRING + SUBM P,E ; RELATIVIZE E + PUSHJ P,TNXSTR ; MAKE INTO A STRING + SUB P,E ; BACK TO NORMAL + PUSH TP,A + PUSH TP,B + PUSHJ P,RGPRS1 ; PARSE INTO FIELDS + MOVE B,T.CHAN+1(TB) + MOVEI C,RNAME1-1(B) + HRLI C,T.NM1(TB) + BLT C,RSNAME(B) + JRST OPBASC +OPFLOS: MOVEI C,(A) ; SAVE ERROR CODE + MOVE B,T.CHAN+1(TB) + HRRZ A,CHANNO(B) ; JFN BACK TO A + RLJFN ; TRY TO RELEASE IT + JFCL + MOVEI A,(C) ; ERROR CODE BACK TO A + +GTJLOS: PUSHJ P,TGFALS ; GET A FALSE WITH REASON + JRST OPNRET + +STSTK: PUSH TP,$TCHAN + PUSH TP,B + MOVEI A,4+5 ; COUNT CHARS NEEDED (NEED LAST 0 BYTE) + MOVE B,(TP) + ADD A,RDEVIC-1(B) + ADD A,RNAME1-1(B) + ADD A,RNAME2-1(B) + ADD A,RSNAME-1(B) + ANDI A,-1 ; TO 18 BITS + IDIVI A,5 ; TO WORDS NEEDED + POP P,C ; SAVE RET ADDR + MOVE E,P ; SAVE POINTER + PUSH P,[0] ; ALOCATE SLOTS + SOJG A,.-1 + PUSH P,C ; RET ADDR BACK + INTGO ; IN CASE OVERFLEW + MOVE B,(TP) ; IN CASE GC'D + MOVE D,[440700,,1(E)] ; BYTE POINTER TO IT + MOVEI A,RDEVIC-1(B) + PUSHJ P,MOVSTR ; FLUSH IT ON + MOVEI A,": + IDPB A,D + HRRZ A,RSNAME-1(B) ; ANY SNAME AT ALL? + JUMPE A,ST.NM1 ; NOPE, CANT HACK WITH IT + MOVEI A,"< + IDPB A,D + MOVEI A,RSNAME-1(B) + PUSHJ P,MOVSTR ; SNAME UP + MOVEI A,"> + IDPB A,D + MOVEI A,RNAME1-1(B) + PUSHJ P,MOVSTR + MOVEI A,". + IDPB A,D +ST.NM1: MOVEI A,RNAME2-1(B) + PUSHJ P,MOVSTR + SUB TP,[2,,2] + POPJ P, + +MOVSTR: HRRZ 0,(A) ; CHAR COUNT + MOVE A,1(A) ; BYTE POINTER + SOJL 0,CPOPJ + ILDB C,A ; GET CHAR + IDPB C,D ; MUNG IT UP + JRST .-3 + +; MAKE A TENEX ERROR MESSAGE STRING + +TGFALS: PUSH P,A ; SAVE ERROR CODE + PUSHJ P,TMTNXS ; STRING ON STACK + HRROI A,1(E) ; POINT TO SPACE + MOVE B,(E) ; ERROR CODE + HRLI B,400000 ; FOR ME + MOVSI C,-100. ; MAX CHARS + ERSTR ; GET TENEX STRING + JRST TGFLS1 + JRST TGFLS1 + + MOVEI B,1(E) ; A AND B BOUND STRING + SUBM P,E ; RELATIVIZE E + PUSHJ P,TNXSTR ; BUILD STRING + SUB P,E ; P BACK TO NORMAL +TGFLS2: SUB P,[1,,1] ; FLUSH ERROR CODE SLOT + MOVE C,A + MOVE D,B + PUSHJ P,INCONS ; BUILD LIST + MOVSI A,TFALSE ; MAKE IT FALSE + POPJ P, + +TGFLS1: MOVE P,E ; RESET STACK + MOVE A,$TCHSTR + MOVE B,CHQUOTE UNKNOWN PROBLEM IN I/O + JRST TGFLS2 + +] +; OTHER BUFFERED DEVICES JOIN HERE + +OPDSK1: +IFN ITS,[ + PUSHJ P,FIXREA ; STORE THE "REAL" NAMES INTO THE CHANNEL +] +OPBASC: MOVE C,T.SPDL+1(TB) ; C WAS CLOBBERED, GET IT BACK + HRRZ A,S.DIR(C) ; FIND OUT IF OPEN IS ASCII OR WORD + TRZN A,2 ; SKIP IF BINARY + PUSHJ P,OPASCI ; DO IT FOR ASCII + +; NOW SET UP IO INSTRUCTION FOR CHANNEL + +MAKION: MOVE B,T.CHAN+1(TB) + MOVEI C,GETCHR + JUMPE A,MAKIO1 ; JUMP IF INPUT + MOVEI C,PUTCHR ; ELSE GET INPUT + MOVEI 0,80. ; DEFAULT LINE LNTH + MOVEM 0,LINLN(B) + MOVSI 0,TFIX + MOVEM 0,LINLN-1(B) +MAKIO1: + HRLI C,(PUSHJ P,) + MOVEM C,IOINS(B) ; STORE IT + JUMPN A,OPNWIN ; GET AN EOF FORM FOR INPUT CHANNEL + +; HERE TO CONS UP + +EOFMAK: MOVSI C,TATOM + MOVE D,EQUOTE END-OF-FILE + PUSHJ P,INCONS + MOVEI E,(B) + MOVSI C,TATOM + MOVE D,IMQUOTE ERROR + PUSHJ P,ICONS + MOVE D,T.CHAN+1(TB) ; RESTORE CHANNEL + MOVSI 0,TFORM + MOVEM 0,EOFCND-1(D) + MOVEM B,EOFCND(D) + +OPNWIN: MOVEI 0,10. ; SET UP RADIX + MOVSI A,TCHAN ; OPEN SUCCEEDED, RET CHANNEL + MOVE B,T.CHAN+1(TB) + MOVEM 0,RADX(B) + +OPNRET: MOVE C,(P) ; RET ADDR + SUB P,[S.X3+2,,S.X3+2] + SUB TP,[T.CHAN+2,,T.CHAN+2] + JRST (C) + + +; HERE TO CREATE CHARACTER BUFFERS FOR ASCII I/O + +OPASCI: PUSH P,A ; CONTAINS MODE, SAVE IT + MOVEI A,BUFLNT ; GET SIZE OF BUFFER + PUSHJ P,IBLOCK ; GET STORAGE + MOVSI 0,TWORD+.VECT. ; SET UTYPE + MOVEM 0,BUFLNT(B) ; AND STORE + MOVSI A,TCHSTR + SKIPE (P) ; SKIP IF INPUT + JRST OPASCO + MOVEI D,BUFLNT(B) ; REST BYTE POINTER +OPASCA: HRLI D,440700 + MOVE B,T.CHAN+1(TB) ; GET CHANNEL BACK + MOVEI 0,C.BUF + IORM 0,-4(B) ; TURN ON BUFFER BIT + MOVEM A,BUFSTR-1(B) + MOVEM D,BUFSTR(B) ; CLOBBER + POP P,A + POPJ P, + +OPASCO: HRROI C,777776 + MOVEM C,(B) ; -1 THE BUFFER (LEAVE OFF LOW BIT) + MOVSI C,(B) + HRRI C,1(B) ; BUILD BLT POINTER + BLT C,BUFLNT-1(B) ; ZAP + MOVEI D,(B) ; START MAKING STRING POINTER + HRRI A,BUFLNT*5 ; SET UP CHAR COUNT + JRST OPASCA + + +; OPEN NON FILE ORIENTED DEVICES (NUL, PTR, PTP ETC.) + +ONUL: +OPTP: +OPTR: PUSHJ P,OPEN0 ; SET UP MODE AND OPEN + SETZM S.NM1(C) ; CLOBBER UNINTERESTING FIELDS + SETZM S.NM2(C) + SETZM S.SNM(C) + JRST OPDSK1 + +; OPEN DEVICES THAT IGNORE SNAME + +OUTN: PUSHJ P,OPEN0 + SETZM S.SNM(C) + JRST OPDSK1 + +; OPEN THE DISPLAY DEVICE + +ODIS: MOVEI B,T.DIR(TB) ; GET CHANNEL + PUSHJ P,CHRWRD ; TO ASCII + JFCL + MOVE E,B ; DIR TO E + MOVE B,T.CHAN+1(TB) ; CHANNEL + MOVE 0,[PUSHJ P,DCHAR] ; IOINS + CAIN A,1 + MOVEM 0,IOINS(B) + PUSHJ P,DISOPN + JRST DISLOS ; LOSER + + MOVE D,T.CHAN+1(TB) ; GET CHANNEL + MOVEI 0,C.OPN+C.PRIN + HRRM 0,-4(D) + MOVEM A,DISINF-1(D) ; AND STORE + MOVEM B,DISINF(D) + SETZM CHANNO(D) ; NO REAL CHANNEL + MOVEI 0,DISLNL + MOVEM 0,LINLN(D) + MOVEI 0,DISPGL + MOVEM 0,PAGLN(D) + MOVEI 0,10. ; SET RADIX + MOVEM 0,RADX(D) + JRST SAVCHN ; ADD TO CHANNEL LIST + + +; INTERNAL CHANNEL OPENER + +OINT: HRRZ A,S.DIR(C) ; CHECK DIR + CAIL A,2 ; READ/PRINT? + JRST WRONGD ; NO, LOSE + + MOVE 0,INTINS(A) ; GET INS + MOVE D,T.CHAN+1(TB) ; AND CHANNEL + MOVEM 0,IOINS(D) ; AND CLOBBER + MOVEI 0,C.OPN+C.READ + TRNE A,1 + MOVEI 0,C.OPN+C.PRIN + HRRM 0,-4(D) + SETOM STATUS(D) ; MAKE SURE NOT AA TTY + PMOVEM T.XT(TB),INTFCN-1(D) + +; HERE TO SAVE PSEUDO CHANNELS + +SAVCHN: HRRZ E,CHNL0+1(TVP) ; POINT TO CURRENT LIST + MOVSI C,TCHAN + PUSHJ P,ICONS ; CONS IT ON + HRRZM B,CHNL0+1(TVP) + JRST OPNWIN + +; INT DEVICE I/O INS + +INTINS: PUSHJ P,GTINTC + PUSHJ P,PTINTC + + +; HERE TO OPEN THE NET DEVICE (I.E. THE ARPA NET) + +IFN ITS,[ +ONET: HRRZ A,S.DIR(C) ; DIRECTION CODE + CAILE A,1 ; ASCII ? + IORI A,4 ; TURN ON IMAGE BIT + SKIPGE S.NM1(C) ; NAME1 I.E. LOCAL HOST GIVEN + IORI A,10 ; NO, WE WILL LET ITS GIVE US ONE + SKIPGE S.NM2(C) ; NORMAL OR "LISTEN" + IORI A,20 ; TURN ON LISTEN BIT + MOVEI 0,7 ; DEFAULT BYTE SIZE + TRNE A,2 ; UNLESS + MOVEI 0,36. ; IMAGE WHICH IS 36 + SKIPN T.XT(TB) ; BYTE SIZE GIVEN? + MOVEM 0,S.X1(C) ; NO, STORE DEFAULT + SKIPG D,S.X1(C) ; BYTE SIZE REASONABLE? + JRST RBYTSZ ; NO <0, COMPLAIN + TRNE A,2 ; SKIP TO CHECK ASCII + JRST ONET2 ; CHECK IMAGE + CAIN D,7 ; 7-BIT WINS + JRST ONET1 + CAIE D,44 ; 36-BIT INDICATES BLOCK ASCII MODE + JRST .+3 + IORI A,2 ; SET BLOCK FLAG + JRST ONET1 + IORI A,40 ; USE 8-BIT MODE + CAIN D,10 ; IS IT RIGHT + JRST ONET1 ; YES +] + +RBYTSZ: PUSH TP,$TATOM ; CALL ERROR + PUSH TP,EQUOTE BYTE-SIZE-BAD + JRST CALER1 + +IFN ITS,[ +ONET2: CAILE D,36. ; IMAGE SIZE REASONABLE? + JRST RBYTSZ ; NO + CAIN D,36. ; NORMAL + JRST ONET1 ; YES, DONT SET FIELD + + ASH D,9. ; POSITION FOR FIELD + IORI A,40(D) ; SET IT AND ITS BIT + +ONET1: HRLM A,S.DEV(C) ; CLOBBER OPEN BLOCK + MOVE E,A ; SAVE BLOCK MODE INFO + PUSHJ P,OPEN1 ; DO THE OPEN + PUSH P,E + +; CLOBBER REAL SLOTS FOR THE OPEN + + MOVEI A,3 ; GET STATE VECTOR + PUSHJ P,IBLOCK + MOVSI A,TUVEC + MOVE D,T.CHAN+1(TB) + MOVEM A,BUFRIN-1(D) + MOVEM B,BUFRIN(D) + MOVSI A,TFIX+.VECT. ; SET U TYPE + MOVEM A,3(B) + MOVE C,T.SPDL+1(TB) + MOVE B,T.CHAN+1(TB) + + PUSHJ P,INETST ; GET STATE + + POP P,A ; IS THIS BLOCK MODE + MOVEI 0,80. ; POSSIBLE LINE LENGTH + TRNE A,1 ; SKIP IF INPUT + MOVEM 0,LINLN(B) + TRNN A,2 ; BLOCK MODE? + JRST .+3 + TRNN A,4 ; ASCII MODE? + JRST OPBASC ; GO SETUP BLOCK ASCII + MOVE 0,[PUSHJ P,DOIOT] + MOVEM 0,IOINS(B) + + JRST OPNWIN + +; INTERNAL ROUTINE TO GET THE CURRENT STATE OF THE NETWROK CHANNEL + +INETST: MOVE A,S.NM1(C) + MOVEM A,RNAME1(B) + MOVE A,S.NM2(C) + MOVEM A,RNAME2(B) + LDB A,[1100,,S.SNM(C)] + MOVEM A,RSNAME(B) + + MOVE E,BUFRIN(B) ; GET STATE BLOCK +INTST1: HRRE 0,S.X1(C) + MOVEM 0,(E) + ADDI C,1 + AOBJN E,INTST1 + + POPJ P, + + +; ACCEPT A CONNECTION + +MFUNCTION NETACC,SUBR + + PUSHJ P,ARGNET ; CHECK THAT ARG IS AN OPEN NET CHANNEL + MOVE A,CHANNO(B) ; GET CHANNEL + LSH A,23. ; TO AC FIELD + IOR A,[.NETACC] + XCT A + JRST IFALSE ; RETURN FALSE +NETRET: MOVE A,(AB) + MOVE B,1(AB) + JRST FINIS + +; FORCE SYSTEM NETWORK BUFFERS TO BE SENT + +MFUNCTION NETS,SUBR + + PUSHJ P,ARGNET + CAME A,MODES+1 + CAMN A,MODES+3 + SKIPA A,CHANNO(B) ; GET CHANNEL + JRST WRONGD + LSH A,23. + IOR A,[.NETS] + XCT A + JRST NETRET + +; SUBR TO RETURN UPDATED NET STATE + +MFUNCTION NETSTATE,SUBR + + PUSHJ P,ARGNET ; IS IT A NET CHANNEL + PUSHJ P,INSTAT + JRST FINIS + +; INTERNAL NETSTATE ROUTINE + +INSTAT: MOVE C,P ; GET PDL BASE + MOVEI 0,S.X3 ; # OF SLOTS NEEDED + PUSH P,[0] + SOJN 0,.-1 + + MOVEI D,S.DEV(C) ; SETUP FOR .RCHST + HRL D,CHANNO(B) + .RCHST D, ; GET THE GOODS + + PUSHJ P,INETST ; INTO VECTOR + SUB P,[S.X3,,S.X3] + MOVE B,BUFRIN(B) + MOVSI A,TUVEC + POPJ P, +] +; INTERNAL ROUTINE TO CHECK FOR CORRECT CHANNEL TYPE + +ARGNET: ENTRY 1 + GETYP 0,(AB) + CAIE 0,TCHAN + JRST WTYP1 + MOVE B,1(AB) ; GET CHANNEL + SKIPN CHANNO(B) ; OPEN? + JRST CHNCLS + MOVE A,RDEVIC-1(B) ; GET DEV NAME + MOVE B,RDEVIC(B) + PUSHJ P,STRTO6 + POP P,A + CAME A,[SIXBIT /NET /] + JRST NOTNET + MOVE B,1(AB) + MOVE A,DIRECT-1(B) ; CHECK FOR A READ SOCKET + MOVE B,DIRECT(B) + PUSHJ P,STRTO6 + MOVE B,1(AB) ; RESTORE CHANNEL + POP P,A + POPJ P, + +IFE ITS,[ + +; TENEX NETWRK OPENING CODE + +ONET: MOVE B,T.CHAN+1(TB) ; GET CHANNEL + MOVSI C,100700 + HRRI C,1(P) + MOVE E,P + PUSH P,[ASCII /NET:/] ; FOR STRINGS + GETYP 0,RNAME1-1(B) ; CHECK TYPE + CAIE 0,TFIX ; SKIP IF # SUPPLIED + JRST ONET1 + MOVE 0,RNAME1(B) ; GET IT + PUSHJ P,FIXSTK + JFCL + JRST ONET2 +ONET1: CAIE 0,TCHSTR + JRST WRONGT + HRRZ 0,RNAME1-1(B) + MOVE B,RNAME1(B) + JUMPE 0,ONET2 + ILDB A,B + JSP D,ONETCH + SOJA 0,.-3 +ONET2: MOVEI A,". + JSP D,ONETCH + MOVE B,T.CHAN+1(TB) + GETYP 0,RNAME2-1(B) + CAIE 0,TFIX + JRST ONET3 + GETYP 0,RSNAME-1(B) + CAIE 0,TFIX + JRST WRONGT + MOVE 0,RSNAME(B) + PUSHJ P,FIXSTK + JRST ONET4 + MOVE B,T.CHAN+1(TB) + MOVEI A,"- + JSP D,ONETCH + MOVE 0,RNAME2(B) + PUSHJ P,FIXSTK + JRST WRONGT + JRST ONET4 +ONET3: CAIE 0,TCHSTR + JRST WRONGT + HRRZ 0,RNAME2-1(B) + MOVE B,RNAME2(B) + JUMPE 0,ONET4 + ILDB A,B + JSP D,ONETCH + SOJA 0,.-3 + +ONET4: +ONET5: MOVE B,T.CHAN+1(TB) + GETYP 0,RNAME2-1(B) + CAIN 0,TCHSTR + JRST ONET6 + MOVEI A,"; + JSP D,ONETCH + MOVEI A,"T + JSP D,ONETCH +ONET6: MOVSI A,1 + HRROI B,1(E) ; STRING POINTER + GTJFN ; GET THE G.D JFN + TDZA 0,0 ; REMEMBER FAILURE + MOVEI 0,1 + MOVE P,E ; RESTORE P + JUMPE 0,GTJLOS ; CONS UP ERROR STRING + + MOVE B,T.CHAN+1(TB) + HRRZM A,CHANNO(B) ; SAVE THE JFN + + MOVE C,T.SPDL+1(TB) + MOVE D,S.DIR(C) + MOVEI B,10 + TRNE D,2 + MOVEI B,36. + SKIPE T.XT(TB) + MOVE B,T.XT+1(TB) + JUMPL B,RBYTSZ + CAILE B,36. + JRST RBYTSZ + ROT B,-6 + TLO B,3400 + HRRI B,200000 + TRNE D,1 ; SKIP FOR INPUT + HRRI B,100000 + ANDI A,-1 ; ISOLATE JFCN + OPENF + JRST OPFLOS ; REPORT ERROR + MOVE B,T.CHAN+1(TB) + ASH A,1 ; POINT TO SLOT + ADDI A,CHNL0(TVP) ; TO REAL SLOT + MOVEM B,1(A) ; SAVE CHANNEL + MOVE A,CHANNO(B) + CVSKT ; GET ABS SOCKET # + FATAL NETWORK BITES THE BAG! + MOVE D,B + MOVE B,T.CHAN+1(TB) + MOVEM D,RNAME1(B) + MOVSI 0,TFIX + MOVEM 0,RNAME1-1(B) + + MOVSI 0,TFIX + MOVEM 0,RNAME2-1(B) + MOVEM 0,RSNAME-1(B) + MOVE C,T.SPDL+1(TB) + MOVE C,S.DIR(C) + MOVE 0,[PUSHJ P,DONETO] + TRNN C,1 ; SKIP FOR OUTPUT + MOVE 0,[PUSHJ P,DONETI] + MOVEM 0,IOINS(B) + MOVEI 0,80. ; LINELENGTH + TRNE C,1 ; SKIP FOR INPUT + MOVEM 0,LINLN(B) + MOVEI A,3 ; GET STATE UVECTOR + PUSHJ P,IBLOCK + MOVSI 0,TFIX+.VECT. + MOVEM 0,3(B) + MOVE C,B + MOVE B,T.CHAN+1(TB) + MOVEM C,BUFRIN(B) + MOVSI 0,TUVEC + MOVEM 0,BUFRIN-1(B) + MOVE A,CHANNO(B) ; GET JFN + GDSTS ; GET STATE + MOVE E,T.CHAN+1(TB) + MOVEM D,RNAME2(E) + MOVEM C,RSNAME(E) + MOVE C,BUFRIN(E) + MOVEM B,(C) ; INITIAL STATE STORED + MOVE B,E + JRST OPNWIN + +; DOIOT FOR TENEX NETWRK + +DONETO: PUSH P,0 + MOVE 0,[BOUT] + JRST .+3 + +DONETI: PUSH P,0 + MOVE 0,[BIN] + PUSH P,0 + PUSH TP,$TCHAN + PUSH TP,B + MOVEI 0,(A) ; POSSIBLE OUTPUT CHAR TO 0 + MOVE A,CHANNO(B) + MOVE B,0 + ENABLE + XCT (P) + DISABLE + MOVEI A,(B) ; RET CHAR IN A + MOVE B,(TP) + MOVE 0,-1(P) + SUB P,[2,,2] + SUB TP,[2,,2] + POPJ P, + +NETPRS: MOVEI D,0 + HRRZ 0,(C) + MOVE C,1(C) + +ONETL: ILDB A,C + CAIN A,"# + POPJ P, + SUBI A,60 + ASH D,3 + IORI D,(A) + SOJG 0,ONETL + AOS (P) + POPJ P, + +FIXSTK: CAMN 0,[-1] + POPJ P, + JFFO 0,FIXS3 ; PUT OCTAL DIGITS INTO STIRNG + MOVEI A,"0 + POP P,D + AOJA D,ONETCH +FIXS3: IDIVI A,3 + MOVEI B,12. + SUBI B,(A) + HRLM B,(P) + IMULI A,3 + LSH 0,(A) + POP P,B +FIXS2: MOVEI A,0 + ROTC 0,3 ; NEXT DIGIT + ADDI A,60 + JSP D,ONETCH + SUB B,[1,,0] + TLNN B,-1 + JRST 1(B) + JRST FIXS2 + +ONETCH: IDPB A,C + TLNE C,760000 ; SKIP IF NEW WORD + JRST (D) + PUSH P,[0] + JRST (D) + +INSTAT: MOVE E,B + MOVE A,CHANNO(E) + GDSTS + LSH B,-32. + MOVEM D,RNAME2(E) ; UPDATE FOREIGN SOCHKET + MOVEM C,RSNAME(E) ; AND HOST + MOVE C,BUFRIN(E) + XCT ITSTRN(B) ; XLATE TO LOOK MORE LIKE ITS + MOVEM B,(C) ; STORE STATE + MOVE B,E + POPJ P, + +ITSTRN: MOVEI B,0 + JRST NLOSS + JRST NLOSS + MOVEI B,1 + MOVEI B,2 + JRST NLOSS + MOVEI B,4 + PUSHJ P,NOPND + MOVEI B,0 + JRST NLOSS + JRST NLOSS + PUSHJ P,NCLSD + MOVEI B,0 + JRST NLOSS + MOVEI B,0 + +NLOSS: FATAL ILLEGAL NETWORK STATE + +NOPND: MOVE B,DIRECT(E) ; SEE IF READ OR PRINT + ILDB B,B ; GET 1ST CHAR + CAIE B,"R ; SKIP FOR READ + JRST NOPNDW + SIBE ; SEE IF INPUT EXISTS + JRST .+3 + MOVEI B,5 + POPJ P, + MOVEM B,2(C) ; STORE BYTES IN STATE VECTOR + MOVEI B,11 ; RETURN DATA PRESENT STATE + POPJ P, + +NOPNDW: SOBE ; SEE IF OUTPUT PRESENT + JRST .+3 + MOVEI B,5 + POPJ P, + + MOVEI B,6 + POPJ P, + +NCLSD: MOVE B,DIRECT(E) + ILDB B,B + CAIE B,"R + JRST RET0 + SIBE + JRST .+2 + JRST RET0 + MOVEI B,10 + POPJ P, + +RET0: MOVEI B,0 + POPJ P, + + +MFUNCTION NETSTATE,SUBR + + PUSHJ P,ARGNET + PUSHJ P,INSTAT + MOVE B,BUFRIN(B) + MOVSI A,TUVEC + JRST FINIS + +MFUNCTION NETS,SUBR + + PUSHJ P,ARGNET + CAME A,MODES+1 ; PRINT OR PRINTB? + CAMN A,MODES+3 + SKIPA A,CHANNO(B) + JRST WRONGD + MOVEI B,21 + MTOPR +NETRET: MOVE B,1(AB) + MOVSI A,TCHAN + JRST FINIS + +MFUNCTION NETACC,SUBR + + PUSHJ P,ARGNET + MOVE A,CHANNO(B) + MOVEI B,20 + MTOPR + JRST NETRET + +] + +; HERE TO OPEN TELETYPE DEVICES + +OTTY: HRRZ A,S.DIR(C) ; GET DIR CODE + TRNE A,2 ; SKIP IF NOT READB/PRINTB + JRST WRONGD ; CANT DO THAT + +IFN ITS,[ + MOVE A,S.NM1(C) ; CHECK FOR A DIR + MOVE 0,S.NM2(C) + CAMN A,[SIXBIT /.FILE./] + CAME 0,[SIXBIT /(DIR)/] + SKIPA E,[-15.*2,,] + JRST OUTN ; DO IT THAT WAY + + HRRZ A,S.DIR(C) ; CHECK DIR + TRNE A,1 + JRST TTYLP2 + HRRI E,CHNL1(TVP) + PUSH P,S.DEV(C) ; SAVE THE SIXBIT DEV NAME + HRLZS (P) ; POSTITION DEVICE NAME + +TTYLP: SKIPN D,1(E) ; CHANNEL OPEN? + JRST TTYLP1 ; NO, GO TO NEXT + MOVE A,RDEVIC-1(D) ; GET DEV NAME + MOVE B,RDEVIC(D) + PUSHJ P,STRTO6 ; TO 6 BIT + POP P,A ; GET RESULT + CAMN A,(P) ; SAME? + JRST SAMTYQ ; COULD BE THE SAME +TTYLP1: ADD E,[2,,2] + JUMPL E,TTYLP + SUB P,[1,,1] ; THIS ONE MUST BE UNIQUE +TTYLP2: MOVE C,T.SPDL+1(TB) ; POINT TO P BASE + HRRZ A,S.DIR(C) ; GET DIR OF OPEN + SKIPE A ; IF OUTPUT, + IORI A,20 ; THEN USE DISPLAY MODE + HRLM A,S.DEV(C) ; STORE IN OPEN BLOCK + PUSHJ P,OPEN2 ; OPEN THE TTY + HRLZ A,S.DEV(C) ; GET DEVICE NAME + PUSHJ P,6TOCHS ; TO A STRING + MOVE D,T.CHAN+1(TB) ; POINT TO CHANNEL + MOVEM A,RDEVIC-1(D) + MOVEM B,RDEVIC(D) + MOVE C,T.SPDL+1(TB) ; RESTORE PDL BASE + MOVE B,D ; CHANNEL TO B + HRRZ 0,S.DIR(C) ; AND DIR + JUMPE 0,TTYSPC +TTY1: DOTCAL TTYGET,[CHANNO(B),[2000,,0],[2000,,A],[2000,,D]] + FATAL .CALL FAILURE + DOTCAL TTYSET,[CHANNO(B),MODE1,MODE2,D] + FATAL .CALL FAILURE + MOVE A,[PUSHJ P,GMTYO] + MOVEM A,IOINS(B) + DOTCAL RSSIZE,[CHANNO(B),[2000,,A],[2000,,D]] + FATAL .CALL FAILURE + MOVEM D,LINLN(B) + MOVEM A,PAGLN(B) + JRST OPNWIN + +; MAKE AN IOT + +IOTMAK: HRLZ A,CHANNO(B) ; GET CHANNEL + ROT A,5 + IOR A,[.IOT A] ; BUILD IOT + MOVEM A,IOINS(B) ; AND STORE IT + POPJ P, + + +; HERE IF POSSIBLY OPENING AN ALREADY OPEN TTY + +SAMTYQ: MOVE D,1(E) ; RESTORE CURRENT CHANNEL + MOVE A,DIRECT-1(D) ; GET DIR + MOVE B,DIRECT(D) + PUSHJ P,STRTO6 + POP P,A ; GET SIXBIT + MOVE C,T.SPDL+1(TB) + HRRZ C,S.DIR(C) + CAME A,MODES(C) ; SKIP IF DIFFERENT DIRECTION + JRST TTYLP1 + +; HERE IF A RE-OPEN ON A TTY + + HRRZ 0,FSAV(TB) ; IS IT FROM A FOPEN + CAIN 0,FOPEN + JRST RETOLD ; RET OLD CHANNEL + + PUSH TP,$TCHAN + PUSH TP,1(E) ; PUSH OLD CHANNEL + PUSH TP,$TFIX + PUSH TP,T.CHAN+1(TB) + MOVE A,[PUSHJ P,CHNFIX] + PUSHJ P,GCHACK + SUB TP,[4,,4] + +RETOLD: MOVE B,1(E) ; GET CHANNEL + AOS CHANNO-1(B) ; AOS REF COUNT + MOVSI A,TCHAN + SUB P,[1,,1] ; CLEAN UP STACK + JRST OPNRET ; AND LEAVE + + +; ROUTINE TO PASS TO GCHACK TO FIX UP CHANNEL POINTER + +CHNFIX: CAIN C,TCHAN + CAME D,(TP) + POPJ P, + MOVE D,-2(TP) ; GET REPLACEMENT + SKIPE B + MOVEM D,1(B) ; CLOBBER IT AWAY + POPJ P, +] + +IFE ITS,[ + MOVE C,T.SPDL+1(TB) ; POINT TO P BASE + HRRZ 0,S.DIR(C) ; 0/ 0 FOR READ 0/ 1 FOR PRINT + MOVE A,[PUSHJ P,MTYO] + MOVE B,T.CHAN+1(TB) + MOVEM A,IOINS(B) + MOVEI A,100 ; PRIM INPUT JFN + JUMPN 0,TNXTY1 + MOVEI E,C.OPN+C.READ + HRRM E,-4(B) + MOVEM B,CHNL0+2*100+1(TVP) + JRST TNXTY2 +TNXTY1: MOVEM B,CHNL0+2*101+1(TVP) + MOVEI A,101 ; PRIM OUTPUT JFN + MOVEI E,C.OPN+C.PRIN + HRRM E,-4(B) +TNXTY2: MOVEM A,CHANNO(B) + JUMPN 0,OPNWIN +] +; SETUP FUNNY BUFFER FOR TTY INPUT DEVICES + +TTYSPC: MOVEI A,EXTBFR ; GET EXTRA BUFFER + PUSHJ P,IBLOCK ; GET BLOCK + MOVE D,T.CHAN+1(TB) ;RESTORE CHANNEL POINTER +IFN ITS,[ + MOVE A,CHANNO(D) + LSH A,23. + IOR A,[.IOT A] + MOVEM A,IOIN2(B) +] +IFE ITS,[ + MOVE A,[PBIN] + MOVEM A,IOIN2(B) +] + MOVSI A,TLIST + MOVEM A,EXBUFR-1(D) ; FOR WAITING TTY BUFFERS + SETZM EXBUFR(D) ; NIL LIST + MOVEM B,BUFRIN(D) ;STORE IN CHANNEL + MOVSI A,TUVEC ;MAKE SURE TYPE IS UNIFORM VECTOR + MOVEM A,BUFRIN-1(D) +IFN ITS, MOVEI A,177 ;SET ERASER TO RUBOUT +IFE ITS, MOVEI A,1 ; TRY ^A FOR TENEX + MOVEM A,ERASCH(B) + SETZM KILLCH(B) ;NO KILL CHARACTER NEEDED + MOVEI A,33 ;BREAKCHR TO C.R. + MOVEM A,BRKCH(B) + MOVEI A,"\ ;ESCAPER TO \ + MOVEM A,ESCAP(B) + MOVE A,[010700,,BYTPTR(E)] ;RELATIVE BYTE POINTER + MOVEM A,BYTPTR(B) + MOVEI A,14 ;BARF BACK CHARACTER FF + MOVEM A,BRFCHR(B) + MOVEI A,^D + MOVEM A,BRFCH2(B) + +; SETUP DEFAULT TTY INTERRUPT HANDLER + + PUSH TP,$TATOM + PUSH TP,MQUOTE CHAR,CHAR,INTRUP + PUSH TP,$TFIX + PUSH TP,[10] ; PRIORITY OF CHAR INT + PUSH TP,$TCHAN + PUSH TP,D + MCALL 3,EVENT ; 1ST MAKE AN EVENT EXIST + PUSH TP,A + PUSH TP,B + PUSH TP,$TSUBR + PUSH TP,[QUITTER] ; DEFAULT HANDLER IS QUITTER + MCALL 2,HANDLER + +; BUILD A NULL STRING + + MOVEI A,0 + PUSHJ P,IBLOCK ; USE A BLOCK + MOVE D,T.CHAN+1(TB) + MOVEI 0,C.BUF + IORM 0,-4(D) + HRLI B,440700 + MOVSI A,TCHSTR + MOVEM A,BUFSTR-1(D) + MOVEM B,BUFSTR(D) + MOVEI A,0 + MOVE B,D ; CHANNEL TO B + JRST MAKION + + +; ROUTINE TO OPEN ITS CHANNEL WITHOUT .RCHST + +OPEN2: MOVEI A,S.DEV(C) ; POINT TO OPEN BLOCK + PUSHJ P,MOPEN ; OPEN THE FILE + JRST OPNLOS + MOVE B,T.CHAN+1(TB) ; GET CHANNEL BACK + MOVEM A,CHANNO(B) ; SAVE THE CHANNEL + JRST OPEN3 + +; FIX UP MODE AND FALL INTO OPEN + +OPEN0: HRRZ A,S.DIR(C) ; GET DIR + TRNE A,2 ; SKIP IF NOT BLOCK + IORI A,4 ; TURN ON IMAGE + IORI A,2 ; AND BLOCK + + PUSH P,A + PUSH TP,$TPDL + PUSH TP,C ; SAVE CRUFT TO CHECK FOR PRINTO, HA HA + MOVE B,T.CHAN+1(TB) + MOVE A,DIRECT-1(B) + MOVE B,DIRECT(B) ; THIS KLUDGE THE MESS OF NDR + PUSHJ P,STRTO6 + MOVE C,(TP) + POP P,D ; THE SIXBIT FOR KLUDGE + POP P,A ; GET BACK THE RANDOM BITS + SUB TP,[2,,2] + CAME D,[SIXBIT /PRINTO/] + JRST OPEN9 ; WELL NOT THIS TIME + IORI A,100000 ; WRITEOVER BIT + + HRRZ 0,FSAV(TB) + CAIN 0,NFOPEN + IOR A,4 ; DON'T CHANGE REF DATE +OPEN9: HRLM A,S.DEV(C) ; AND STORE IT + +; ROUTINE TO ATTEMPT TO OPEN A REAL ITS CHANNEL + +OPEN1: MOVEI A,S.DEV(C) ; POINT TO OPEN BLOCK + PUSHJ P,MOPEN + JRST OPNLOS + MOVE B,T.CHAN+1(TB) ; GET CHANNEL BACK + MOVEM A,CHANNO(B) ; CLOBBER INTO CHANNEL + MOVSI A,(A) ; SET UP READ CHAN STATUS + HRRI A,S.DEV(C) + .RCHST A, ; GET THE GOODS + +; NOW CLOBBER THE TVP SLOT FOR THIS CHANNEL + +OPEN3: MOVE A,S.DIR(C) + MOVEI 0,C.OPN+C.READ + TRNE A,1 + MOVEI 0,C.OPN+C.PRIN + TRNE A,2 + TRO 0,C.BIN + HRRM 0,-4(B) + MOVE A,CHANNO(B) ; GET CHANNEL # + ASH A,1 + ADDI A,CHNL0(TVP) ; POINT TO SLOT + MOVEM B,1(A) ; NOT: TYPE ALREADY SETUP + +; NOW GET STATUS WORD + +DOSTAT: HRLZ A,CHANNO(B) ; NOW GET STATUS WORD + ROT A,5 + IOR A,[.STATUS STATUS(B)] ; GET INS + XCT A ; AND DO IT + POPJ P, + + +; HERE IF OPEN FAILS (CHANNEL IS IN A) + +OPNLOS: JUMPL A,NOCHAN ; ALL CHANNELS ARE IN USE + LSH A,23. ; DO A .STATUS + IOR A,[.STATUS A] + XCT A ; STATUS TO A + PUSHJ P,GFALS ; GET A FALSE WITH A MESSAGE + SUB P,[1,,1] ; EXTRA RET ADDR FLUSHED + JRST OPNRET ; AND RETURN + +; ROUTINE TO CONS UP FALSE WITH REASON + +GFALS: PUSH P,[SIXBIT / ERR/] ; SET UP OPEN TO ERR DEV + PUSH P,[3] ; SAY ITS FOR CHANNEL + PUSH P,A + .OPEN 0,-2(P) ; USE CHANNEL 0 FOR THIS + FATAL CAN'T OPEN ERROR DEVICE + SUB P,[3,,3] ; DONT WANT OPEN BLOCK NOW + MOVEI A,0 ; PREPARE TO BUILD STRING ON STACK +EL1: PUSH P,[0] ; WHERE IT WILL GO + MOVSI B,(<440700,,(P)>) ; BYTE POINTER TO TOP OF STACK +EL2: .IOT 0,0 ; GET A CHAR + JUMPL 0,EL3 ; JUMP ON -1,,3 + CAIN 0,3 ; EOF? + JRST EL3 ; YES, MAKE STRING + CAIN 0,14 ; IGNORE FORM FEEDS + JRST EL2 ; IGNORE FF + CAIE 0,15 ; IGNORE CR & LF + CAIN 0,12 + JRST EL2 + IDPB 0,B ; STUFF IT + TLNE B,760000 ; SIP IF WORD FULL + AOJA A,EL2 + AOJA A,EL1 ; COUNT WORD AND GO + +EL3: SKIPN (P) ; ANY CHARS AT END? + SUB P,[1,,1] ; FLUSH XTRA + PUSH P,A ; PUT UP COUNT + .CLOSE 0, ; CLOSE THE ERR DEVICE + PUSHJ P,CHMAK ; MAKE STRING + MOVE C,A + MOVE D,B ; COPY STRING + PUSHJ P,INCONS ; CONS TO NIL + MOVSI A,TFALSE ; MAKEIT A FALSE + POPJ P, + + +; ROUTINE TO FILL IN THE "REAL" SLOTS FOR THE CHANNEL + +FIXREA: HRLZS S.DEV(C) ; KILL MODE BITS + MOVE D,[-4,,S.DEV] + +FIXRE1: MOVEI A,(D) ; COPY REL POINTER + ADD A,T.SPDL+1(TB) ; POINT TO SLOT + SKIPN A,(A) ; SKIP IF GOODIE THERE + JRST FIXRE2 + PUSHJ P,6TOCHS ; MAKE INOT A STRING + MOVE C,RDTBL-S.DEV(D); GET OFFSET + ADD C,T.CHAN+1(TB) + MOVEM A,-1(C) + MOVEM B,(C) +FIXRE2: AOBJN D,FIXRE1 + POPJ P, + +DOOPN: PUSH P,A + HRLZ A,CHANNO(B) ; GET CHANNEL + ASH A,5 + HRR A,(P) ; POINT + TLO A,(.OPEN) + XCT A + SKIPA + AOS -1(P) + POP P,A + POPJ P, + +;THIS ROUTINE CONVERTS MUDDLE CHARACTER STRINGS TO SIXBIT FILE NAMES +STRTO6: PUSH TP,A + PUSH TP,B + PUSH P,E ;SAVE USEFUL FROB + MOVEI E,(A) ; CHAR COUNT TO E + GETYP A,A + CAIE A,TCHSTR ; IS IT ONE WORD? + JRST WRONGT ;NO +CHREAD: MOVEI A,0 ;INITIALIZE OUTPUT WORD + MOVE D,[440600,,A] ;AND BYTE POINTER TO IT +NEXCHR: SOJL E,SIXDON + ILDB 0,B ; GET NEXT CHAR + JUMPE 0,SIXDON ;IF NULL, WE ARE FINISHED + PUSHJ P,A0TO6 ; CONVERT TO SIXBIT + IDPB 0,D ;DEPOSIT INTO SIX BIT + TRNN A,77 ;IS OUTPUT FULL + JRST NEXCHR ; NO, GET NEXT +SIXDON: SUB TP,[2,,2] ;FIX UP TP + POP P,E + EXCH A,(P) ;LEAVE RESULT ON P-STACK + JRST (A) ;NOW RETURN + + +;SUBROUTINE TO CONVERT SIXBIT TO ATOM + +6TOCHS: PUSH P,E + PUSH P,D + MOVEI B,0 ;MAX NUMBER OF CHARACTERS + PUSH P,[0] ;STRING WILL GO ON P SATCK + JUMPE A,GETATM ; EMPTY, LEAVE + MOVEI E,-1(P) ;WILL BE BYTE POINTER + HRLI E,10700 ;SET IT UP + PUSH P,[0] ;SECOND POSSIBLE WORD + MOVE D,[440600,,A] ;INPUT BYTE POINTER +6LOOP: ILDB 0,D ;START CHAR GOBBLING + ADDI 0,40 ;CHANGET TOASCII + IDPB 0,E ;AND STORE IT + TLNN D,770000 ; SKIP IF NOT DONE + JRST 6LOOP1 + TDNN A,MSKS(B) ; CHECK IF JUST SPACES LEFT + AOJA B,GETATM ; YES, DONE + AOJA B,6LOOP ;KEEP LOOKING +6LOOP1: PUSH P,[6] ;IF ARRIVE HERE, STRING IS 2 WORDS + JRST .+2 +GETATM: MOVEM B,(P) ;SET STRING LENGTH=1 + PUSHJ P,CHMAK ;MAKE A MUDDLE STRING + POP P,D + POP P,E + POPJ P, + +MSKS: 7777,,-1 + 77,,-1 + ,,-1 + 7777 + 77 + + +; CONVERT ONE CHAR + +A0TO6: CAIL 0,141 ;IF IT IS GREATER OR EQUAL TO LOWER A + CAILE 0,172 ;BUT LESS THAN OR EQUAL TO LOWER Z + JRST .+2 ;THEN + SUBI 0,40 ;CONVERT TO UPPER CASE + SUBI 0,40 ;NOW TO SIX BIT + JUMPL 0,BAD6 ;CHECK FOR A WINNER + CAILE 0,77 + JRST BAD6 + POPJ P, + +; SUBR TO DELETE AND RENAME FILES + +MFUNCTION RENAME,SUBR + + ENTRY + + JUMPGE AB,TFA + PUSH TP,$TPDL + PUSH TP,P ; SAVE P-STACK BASE + GETYP 0,(AB) ; GET 1ST ARG TYPE +IFN ITS,[ + CAIN 0,TCHAN ; CHANNEL? + JRST CHNRNM ; MUST BE RENAME WHILE OPEN FOR WRITING +] +IFE ITS,[ + PUSH P,[100000,,0] + PUSH P,[377777,,377777] +] + MOVSI E,-4 ; 4 THINGS TO PUSH +RNMALP: MOVE B,@RNMTBL(E) + PUSH P,E + PUSHJ P,IDVAL1 + POP P,E + GETYP 0,A + CAIE 0,TCHSTR ; SKIP IF WINS + JRST RNMLP1 + +IFN ITS, PUSHJ P,STRTO6 ; CONVERT TO SIXBIT +IFE ITS, PUSH P,B ; PUSH BYTE POINTER + JRST .+2 + +RNMLP1: PUSH P,RNSTBL(E) ; USE DEFAULT + AOBJN E,RNMALP + +IFN ITS,[ + PUSHJ P,RGPRS ; PARSE THE ARGS + JRST RNM1 ; COULD BE A RENAME + +; HERE TO DELETE A FILE + +DELFIL: MOVEI A,0 ; SETUP FDELE + EXCH A,(P) ; AND GET SNAME + .SUSET [.SSNAM,,A] + HLRZS -3(P) ; FIXUP DEVICE + .FDELE -3(P) ; DO IT TO IT + JRST FDLST ; ANALYSE ERROR + +FDLWON: MOVSI A,TATOM + MOVE B,MQUOTE T + JRST FINIS +] +IFE ITS,[ + MOVE A,(TP) ; GET BASE OF PDL + MOVEI A,1(A) ; POINT TO CRAP + MOVE B,1(AB) ; STRING POINTER + PUSH P,[0] + PUSH P,[0] + PUSH P,[0] + GTJFN ; GET A JFN + JRST TDLLOS ; LOST + ADD AB,[2,,2] ; PAST ARG + JUMPL AB,RNM1 ; GO TRY FOR RENAME + MOVE P,(TP) ; RESTORE P STACK + MOVEI C,(A) ; FOR RELEASE + DELF ; ATTEMPT DELETE + JRST DELLOS ; LOSER + RLJFN ; MAKE SURE FLUSHED + JFCL + +FDLWON: MOVSI A,TATOM + MOVE B,MQUOTE T + JRST FINIS + +RNMLOS: PUSH P,A + MOVEI A,(B) + RLJFN + JFCL +DELLO1: MOVEI A,(C) + RLJFN + JFCL + POP P,A ; ERR NUMBER BACK +TDLLOS: PUSHJ P,TGFALS ; GET FALSE WITH REASON + JRST FINIS + +DELLOS: PUSH P,A ; SAVE ERROR + JRST DELLO1 +] + +;TABLE OF REANMAE DEFAULTS +IFN ITS,[ +RNMTBL: IMQUOTE DEV + IMQUOTE NM1 + IMQUOTE NM2 + IMQUOTE SNM + +RNSTBL: SIXBIT /DSK _MUDS_> / +] +IFE ITS,[ +RNMTBL: IMQUOTE DEV + IMQUOTE SNM + IMQUOTE NM1 + IMQUOTE NM2 + +RNSTBL: -1,,[ASCIZ /DSK/] + 0 + -1,,[ASCIZ /_MUDS_/] + -1,,[ASCIZ /MUD/] +] +; HERE TO DO A RENAME + +RNM1: JUMPGE AB,TMA ; IF ARGS EXHAUSTED, MUST BE TOO MUCH STRING + GETYP 0,(AB) + MOVE C,1(AB) ; GET ARG + CAIN 0,TATOM ; IS IT "TO" + CAME C,MQUOTE TO + JRST WRONGT ; NO, LOSE + ADD AB,[2,,2] ; BUMP PAST "TO" + JUMPGE AB,TFA +IFN ITS,[ + MOVEM P,T.SPDL+1(TB) ; SAVE NEW P-BASE + + MOVEI 0,4 ; FOUR DEFAULTS + PUSH P,-3(P) ; DEFAULT DEVICE IS CURRENT + SOJN 0,.-1 + + PUSHJ P,RGPRS ; PARSE THE NEXT STRING + JRST TMA + + HLRZS A,-7(P) ; FIX AND GET DEV1 + HLRZS B,-3(P) ; SAME FOR DEV2 + CAIE A,(B) ; SAME? + JRST DEVDIF + + POP P,A ; GET SNAME 2 + CAME A,(P)-3 ; SNAME 1 + JRST DEVDIF + .SUSET [.SSNAM,,A] + POP P,-2(P) ; MOVE NAMES DOWN + POP P,-2(P) + .FDELE -4(P) ; TRY THE RENAME + JRST FDLST + JRST FDLWON + +; HERE FOR RENAME WHILE OPEN FOR WRITING + +CHNRNM: ADD AB,[2,,2] ; NEXT ARG + JUMPGE AB,TFA + MOVE B,-1(AB) ; GET CHANNEL + SKIPN CHANNO(B) ; SKIP IF OPEN + JRST BADCHN + MOVE A,DIRECT-1(B) ; CHECK DIRECTION + MOVE B,DIRECT(B) + PUSHJ P,STRTO6 ; TO 6 BIT + POP P,A + CAME A,[SIXBIT /PRINT/] + CAMN A,[SIXBIT /PRINTB/] + JRST CHNRN1 + CAME A,[SIXBIT /PRINTO/] + JRST WRONGD + +; SET UP .FDELE BLOCK + +CHNRN1: PUSH P,[0] + PUSH P,[0] + MOVEM P,T.SPDL+1(TB) + PUSH P,[0] + PUSH P,[SIXBIT /_MUDL_/] + PUSH P,[SIXBIT />/] + PUSH P,[0] + + PUSHJ P,RGPRS ; PARSE THESE + JRST TMA + + SUB P,[1,,1] ; SNAME/DEV IGNORED + MOVE AB,ABSAV(TB) ; GET ORIG ARG POINTER + MOVE B,1(AB) + MOVE A,CHANNO(B) ; ITS CHANNEL # + MOVEM A,-2(P) + .FDELE -4(P) + JRST FDLST + MOVEI A,-4(P) ; SET UP FOR RDCHST + HRL A,CHANNO(B) + .RCHST A, + MOVE A,-3(P) ; UPDATE CHANNEL + PUSHJ P,6TOCHS ; GET A STRING + MOVE C,1(AB) + MOVEM A,RNAME1-1(C) + MOVEM B,RNAME1(C) + MOVE A,-2(P) + PUSHJ P,6TOCHS + MOVE C,1(AB) + MOVEM A,RNAME2-1(C) + MOVEM B,RNAME2(C) + MOVE B,1(AB) + MOVSI A,TCHAN + JRST FINIS +] +IFE ITS,[ + PUSH P,A + MOVE A,(TP) ; PBASE BACK + PUSH A,[400000,,0] + MOVEI A,(A) + MOVE B,1(AB) + GTJFN + JRST TDLLOS + POP P,B + EXCH A,B + MOVEI C,(A) ; FOR RELEASE ATTEMPT + RNAMF + JRST RNMLOS + MOVEI A,(B) + RLJFN ; FLUSH JFN + JFCL + MOVEI A,(C) ; MAKE SURR OTHER IS FLUSHED + RLJFN + JFCL + JRST FDLWON +] +; HERE FOR LOSING .FDELE + +FDLST: .STATUS 0,A ; GET STATUS + PUSHJ P,GFALS ; ANALYZE IT + JRST FINIS + +; SOME .FDELE ERRORS + +DEVDIF: PUSH TP,$TATOM + PUSH TP,EQUOTE DEVICE-OR-SNAME-DIFFERS + JRST CALER1 + + ; HERE TO RESET A READ CHANNEL + +MFUNCTION FRESET,SUBR,RESET + + ENTRY 1 + GETYP A,(AB) + CAIE A,TCHAN + JRST WTYP1 + MOVE B,1(AB) ;GET CHANNEL + SKIPN IOINS(B) ; OPEN? + JRST REOPE1 ; NO, IGNORE CHECKS +IFN ITS,[ + MOVE A,STATUS(B) ;GET STATUS + ANDI A,77 + JUMPE A,REOPE1 ;IF IT CLOSED, JUST REOPEN IT, MAYBE? + CAILE A,2 ;SKIPS IF TTY FLAVOR + JRST REOPEN +] +IFE ITS,[ + MOVE A,CHANNO(B) + CAIE A,100 ; TTY-IN + CAIN A,101 ; TTY-OUT + JRST .+2 + JRST REOPEN +] + CAME B,TTICHN+1(TVP) + CAMN B,TTOCHN+1(TVP) + JRST REATTY +REATT1: MOVEI B,DIRECT-1(B) ;POINT TO DIRECTION + PUSHJ P,CHRWRD ;CONVERT TO A WORD + JFCL + CAME B,[ASCII /READ/] + JRST TTYOPN + MOVE B,1(AB) ;RESTORE CHANNEL + PUSHJ P,RRESET" ;DO REAL RESET + JRST TTYOPN + +REOPEN: PUSH TP,(AB) ;FIRST CLOSE IT + PUSH TP,(AB)+1 + MCALL 1,FCLOSE + MOVE B,1(AB) ;RESTORE CHANNEL + +; SET UP TEMPS FOR OPNCH + +REOPE1: PUSH P,[0] ; WILL HOLD DIR CODE + PUSH TP,$TPDL + PUSH TP,P + IRP A,,[DIRECT,RNAME1,RNAME2,RDEVIC,RSNAME,ACCESS] + PUSH TP,A-1(B) + PUSH TP,A(B) + TERMIN + + PUSH TP,$TCHAN + PUSH TP,1(AB) + + MOVE A,T.DIR(TB) + MOVE B,T.DIR+1(TB) ; GET DIRECTION + PUSHJ P,CHMOD ; CHECK THE MODE + MOVEM A,(P) ; AND STORE IT + +; NOW SET UP OPEN BLOCK IN SIXBIT +IFN ITS,[ + MOVSI E,-4 ; AOBN PNTR +FRESE2: MOVE B,T.CHAN+1(TB) + MOVEI A,@RDTBL(E) ; GET ITEM POINTER + GETYP 0,-1(A) ; GET ITS TYPE + CAIE 0,TCHSTR + JRST FRESE1 + MOVE B,(A) ; GET STRING + MOVE A,-1(A) + PUSHJ P,STRTO6 +FRESE3: AOBJN E,FRESE2 + HLRZS -3(P) ; FIX DEVICE SPEC +] +IFE ITS,[ + MOVE B,T.CHAN+1(TB) + MOVE A,RDEVIC-1(B) + MOVE B,RDEVIC(B) + PUSHJ P,STRTO6 ; RESULT ON STACK + HLRZS (P) +] + + PUSH P,[0] ; PUSH UP SOME DUMMIES + PUSH P,[0] + PUSH P,[0] + PUSHJ P,OPNCH ; ATTEMPT TO DO THEOPEN + GETYP 0,A + CAIE 0,TCHAN + JRST FINIS ; LEAVE IF FALSE OR WHATEVER + +DRESET: MOVE A,(AB) + MOVE B,1(AB) + SETZM CHRPOS(B) ;INITIALIZE THESE PARAMETERS + SETZM LINPOS(B) + SETZM ACCESS(B) + JRST FINIS + +TTYOPN: MOVE B,1(AB) + CAME B,TTOCHN+1(TVP) + CAMN B,TTICHN+1(TVP) + PUSHJ P,TTYOP2 + PUSHJ P,DOSTAT + DOTCAL RSSIZE,[CHANNO(B),[2000,,C],[2000,,D]] + FATAL .CALL FAILURE + MOVEM C,PAGLN(B) + MOVEM D,LINLN(B) + JRST DRESET + +IFN ITS,[ +FRESE1: CAIE 0,TFIX + JRST BADCHN + PUSH P,(A) + JRST FRESE3 +] + +; INTERFACE TO REOPEN CLOSED CHANNELS + +OPNCHN: PUSH TP,$TCHAN + PUSH TP,B + MCALL 1,FRESET + POPJ P, + +REATTY: PUSHJ P,TTYOP2 + SKIPE NOTTY + JRST DRESET + MOVE B,1(AB) + JRST REATT1 + +; FUNCTION TO LIST ALL CHANNELS + +MFUNCTION CHANLIST,SUBR + + ENTRY 0 + + MOVEI A,N.CHNS-1 ;MAX # OF REAL CHANNELS + MOVEI C,0 + MOVEI B,CHNL1(TVP) ;POINT TO FIRST REAL CHANNEL + +CHNLP: SKIPN 1(B) ;OPEN? + JRST NXTCHN ;NO, SKIP + HRRZ E,(B) ; ABOUT TO FLUSH? + JUMPN E,NXTCHN ; YES, FORGET IT + MOVE D,1(B) ; GET CHANNEL + HRRZ E,CHANNO-1(D) ; GET REF COUNT + PUSH TP,(B) + PUSH TP,1(B) + ADDI C,1 ;COUNT WINNERS + SOJGE E,.-3 ; COUNT THEM +NXTCHN: ADDI B,2 + SOJN A,CHNLP + + SKIPN B,CHNL0(TVP)+1 ;NOW HACK LIST OF PSUEDO CHANNELS + JRST MAKLST +CHNLS: PUSH TP,(B) + PUSH TP,(B)+1 + ADDI C,1 + HRRZ B,(B) + JUMPN B,CHNLS + +MAKLST: ACALL C,LIST + JRST FINIS + + ; ROUTINE TO RESTORE A CLOSED CHANNEL TO ITS PREVIOUS STATE + + +REOPN: PUSH TP,$TCHAN + PUSH TP,B + SKIPN CHANNO(B) ; ONLY REAL CHANNELS + JRST PSUEDO + +IFN ITS,[ + MOVSI E,-4 ; SET UP POINTER FOR NAMES + +GETOPB: MOVE B,(TP) ; GET CHANNEL + MOVEI A,@RDTBL(E) ; GET POINTER + MOVE B,(A) ; NOW STRING + MOVE A,-1(A) + PUSHJ P,STRTO6 ; LEAVES SIXBIT ON STACK + AOBJN E,GETOPB +] +IFE ITS,[ + MOVE A,RDEVIC-1(B) + MOVE B,RDEVIC(B) + PUSHJ P,STRTO6 ; GET DEV NAME IN SIXBIT +] + MOVE B,(TP) ; RESTORE CHANNEL + MOVE A,DIRECT-1(B) + MOVE B,DIRECT(B) + PUSHJ P,CHMOD ; CHECK FOR A VALID MODE + +IFN ITS, HLRZS E,-3(P) ; GET DEVICE IN PROPER PLACE +IFE ITS, HLRZS E,(P) + MOVE B,(TP) ; RESTORE CHANNEL + CAIN E,(SIXBIT /DSK/) + JRST DISKH ; DISK WINS IMMEIDATELY + CAIN E,(SIXBIT /TTY/) ; NO NEED TO RE-OPEN THE TTY + JRST REOPD1 +IFN ITS,[ + ANDI E,777700 ; COULD BE "UTn" + MOVE D,CHANNO(B) ; GET CHANNEL + ASH D,1 + ADDI D,CHNL0(TVP) ; DON'T SEEM TO BE OPEN + SETZM 1(D) + SETZM CHANNO(B) + CAIN E,(SIXBIT /UT /) + JRST REOPD ; CURRENTLY, CANT RESTORE UTAPE CHANNLES + CAIN E,(SIXBIT /AI /) + JRST REOPD ; CURRENTLY CANT RESTORE AI CHANNELS + CAIN E,(SIXBIT /ML /) + JRST REOPD ; CURRENTLY CANT RESTORE ML CHANNELS + CAIN E,(SIXBIT /DM /) + JRST REOPD ; CURRENTLY CANT RESTORE DM CHANNELS +] + PUSH TP,$TCHAN ; TRY TO RESET IT + PUSH TP,B + MCALL 1,FRESET + +IFN ITS,[ +REOPD1: AOS -4(P) +REOPD: SUB P,[4,,4] +] +IFE ITS,[ +REOPD1: AOS -1(P) +REOPD: SUB P,[1,,1] +] +REOPD0: SUB TP,[2,,2] + POPJ P, + +IFN ITS,[ +DISKH: MOVE C,(P) ; SNAME + .SUSET [.SSNAM,,C] +] +IFE ITS,[ +DISKH: MOVEM A,(P) ; SAVE MODE WORD + PUSHJ P,STSTK ; STRING TO STACK + MOVE A,(E) ; RESTORE MODE WORD + PUSH TP,$TPDL + PUSH TP,E ; SAVE PDL BASE + MOVE B,-2(TP) ; CHANNEL BACK TO B +] + MOVE C,ACCESS(B) ; GET CHANNELS ACCESS + TRNN A,2 ; SKIP IF NOT ASCII CHANNEL + JRST DISKH1 + HRRZ D,ACCESS-1(B) ; IF PARTIAL WORD OUT + IMULI C,5 ; TO CHAR ACCESS + JUMPE D,DISKH1 ; NO SWEAT + ADDI C,(D) + SUBI C,5 +DISKH1: HRRZ D,BUFSTR-1(B) ; ANY CHARS IN MUDDLE BUFFER + JUMPE D,DISKH2 + PUSH P,A + PUSH P,C + MOVEI C,BUFSTR-1(B) + PUSHJ P,BYTDOP ; FIND LENGTH OF WHOLE BUFFER + HLRZ D,(A) ; LENGTH + 2 TO D + SUBI D,2 + IMULI D,5 ; TO CHARS + POP P,C + POP P,A +DISKH2: SUBI C,(D) ; UPDATE CHAR ACCESS + IDIVI C,5 ; BACK TO WORD ACCESS + IORI A,6 ; BLOCK IMAGE +IFN ITS,[ + TRNE A,1 + IORI A,100000 ; WRITE OVER BIT + HRLM A,-3(P) + MOVEI A,-3(P) + PUSHJ P,DOOPN + JRST REOPD + MOVE A,C ; ACCESS TO A + PUSHJ P,GETFLN ; CHECK LENGTH + CAIGE 0,(A) ; CHECK BOUNDS + JRST .+3 ; COMPLAIN + PUSHJ P,DOACCS ; AND ACESS + JRST REOPD1 ; SUCCESS + + MOVE A,CHANNO(B) ; CLOSE THE G.D. CHANNEL + PUSHJ P,MCLOSE + JRST REOPD + +DOACCS: PUSH P,A + HRLZ A,CHANNO(B) + ASH A,5 + IOR A,[.ACCESS (P)] + XCT A + POP P,A + POPJ P, + +DOIOTO: +DOIOTI: +DOIOT: + PUSH P,0 + MOVSI 0,TCHAN + MOVEM 0,BSTO(PVP) ; IN CASE OF INTERRUPT + ENABLE + HRLZ 0,CHANNO(B) + ASH 0,5 + IOR 0,[.IOT A] + XCT 0 + DISABLE + SETZM BSTO(PVP) + POP P,0 + POPJ P, + +GETFLN: MOVE 0,CHANNO(B) ; GET CHANNEL + .CALL FILBLK ; READ LNTH + .VALUE + POPJ P, + +FILBLK: SETZ + SIXBIT /FILLEN/ + 0 + 402000,,0 ; STUFF RESULT IN 0 +] +IFE ITS,[ + + HRROI B,1(E) ; TENEX STRING POINTER + MOVEI A,1(P) ; A POINT TO BLOCK OF INFO + PUSH P,[100400,,0] ; FORCE JFN REUSE AND ONLY ACCEPT EXISTING FILE + PUSH P,[377777,,377777] ; NO I/O FOR CORRECTIONS ETC. + REPEAT 6,PUSH P,[0] ; OTHER SLOTS + MOVE D,-2(TP) ; CHANNEL BACK + PUSH P,CHANNO(D) ; AND DESIRED JFN + GTJFN ; GO GET IT + JRST RGTJL ; COMPLAIN + MOVE P,(TP) ; RESTORE P + MOVE A,(P) ; MODE WORD BACK + MOVE B,[440000,,200000] ; FLAG BITS + TRNE A,1 ; SKIP FOR INPUT + TRC B,300000 ; CHANGE TO WRITE + MOVE A,CHANNO(D) ; GET JFN + OPENF + JRST ROPFLS + MOVE E,C ; LENGTH TO E + SIZEF ; GET CURRENT LENGTH + JRST ROPFLS + CAMGE B,E ; STILL A WINNER + JRST ROPFLS + MOVE A,-2(TP) ; CHANNEL + MOVE A,CHANNO(A) ; JFN + MOVE B,C + SFPTR + JRST ROPFLS + SUB TP,[2,,2] ; FLUSH PDL POINTER + JRST REOPD1 + +ROPFLS: MOVE A,-2(TP) + MOVE A,CHANNO(A) + CLOSF ; ATTEMPT TO CLOSE + JFCL ; IGNORE FAILURE + SKIPA + +RGTJL: MOVE P,(TP) + SUB TP,[2,,2] + JRST REOPD + +DOACCS: PUSH P,B + EXCH A,B + MOVE A,CHANNO(A) + SFPTR + JRST ACCFAI + POP P,B + POPJ P, +] +PSUEDO: AOS (P) ; ASSUME SUCCESS FOR NOW + MOVEI B,RDEVIC-1(B) ; SEE WHAT DEVICE IS + PUSHJ P,CHRWRD + JFCL + CAME B,[ASCII /E&S/] ; DISPLAY ? + CAMN B,[ASCII /DIS/] + SKIPA B,(TP) ; YES, REGOBBLE CHANNEL AND CONTINUE + JRST REOPD0 ; NO, RETURN HAPPY + PUSHJ P,DISROP + SOS (P) ; DISPLAY DID NOT REOPEN, UNDO ASSUMPTION OF SUCCESS + JRST REOPD0 + + ;THIS PROGRAM CLOSES THE SPECIFIED CHANNEL + +MFUNCTION FCLOSE,SUBR,[CLOSE] + + ENTRY 1 ;ONLY ONE ARG + GETYP A,(AB) ;CHECK ARGS + CAIE A,TCHAN ;IS IT A CHANNEL + JRST WTYP1 + MOVE B,1(AB) ;PICK UP THE CHANNEL + HRRZ A,CHANNO-1(B) ; GET REF COUNT + SOJGE A,CFIN5 ; NOT READY TO REALLY CLOSE + CAME B,TTICHN+1(TVP) ; CHECK FOR TTY + CAMN B,TTOCHN+1(TVP) + JRST CLSTTY + MOVE A,[JRST CHNCLS] + MOVEM A,IOINS(B) ;CLOBBER THE IO INS + MOVE A,RDEVIC-1(B) ;GET THE NAME OF THE DEVICE + MOVE B,RDEVIC(B) + PUSHJ P,STRTO6 + HLRZS A,(P) + MOVE B,1(AB) ; RESTORE CHANNEL + CAIE A,(SIXBIT /E&S/) + CAIN A,(SIXBIT /DIS/) + PUSHJ P,DISCLS + MOVE B,1(AB) ; IN CASE CLOBBERED BY DISCLS + SKIPN A,CHANNO(B) ;ANY REAL CHANNEL? + JRST REMOV ; NO, EITHER CLOSED OR PSEUDO CHANNEL + + MOVE A,DIRECT-1(B) ; POINT TO DIRECTION + MOVE B,DIRECT(B) + PUSHJ P,STRTO6 ; CONVERT TO WORD + POP P,A + LDB E,[140600,,(P)] ; FIRST CHAR OD DEV NAME + CAIE E,'T ; SKIP IF TTY + JRST CFIN4 + CAME A,[SIXBIT /READ/] ; SKIP IF WINNER + JRST CFIN1 +IFN ITS,[ + MOVE B,1(AB) ; IN ITS CHECK STATUS + LDB A,[600,,STATUS(B)] + CAILE A,2 + JRST CFIN1 +] + PUSH TP,$TCHSTR + PUSH TP,CHQUOTE CHAR + PUSH TP,(AB) + PUSH TP,1(AB) + MCALL 2,OFF ; TURN OFF INTERRUPT +CFIN1: MOVE B,1(AB) + MOVE A,CHANNO(B) +IFN ITS,[ + PUSHJ P,MCLOSE +] +IFE ITS,[ + TLZ A,400000 ; FOR JFN RELEASE + CLOSF ; CLOSE THE FILE AND RELEASE THE JFN + JFCL + MOVE A,CHANNO(B) +] +CFIN: LSH A,1 + ADDI A,CHNL0+1(TVP) ;POINT TO THIS CHANNELS LSOT + SETZM CHANNO(B) + SETZM (A) ;AND CLOBBER IT + HLLZS BUFSTR-1(B) + SETZM BUFSTR(B) + HLLZS ACCESS-1(B) +CFIN2: HLLZS -4(B) + MOVSI A,TCHAN ;RETURN THE CHANNEL + JRST FINIS + +CLSTTY: PUSH TP,$TATOM + PUSH TP,EQUOTE ATTEMPT-TO-CLOSE-TTY-CHANNEL + JRST CALER1 + + +REMOV: MOVEI D,CHNL0(TVP)+1 ;ATTEMPT TO REMOVE FROM PSUEDO CHANNEL LIST +REMOV0: SKIPN C,D ;FOUND ON LIST ? + JRST CFIN2 ;NO, JUST IGNORE THIS CLOSED CHANNEL + HRRZ D,(C) ;GET POINTER TO NEXT + CAME B,(D)+1 ;FOUND ? + JRST REMOV0 + HRRZ D,(D) ;YES, SPLICE IT OUT + HRRM D,(C) + JRST CFIN2 + + +; CLOSE UP ANY LEFTOVER BUFFERS + +CFIN4: CAME A,[SIXBIT /PRINTO/] + CAMN A,[SIXBIT /PRINTB/] + JRST .+3 + CAME A,[SIXBIT /PRINT/] + JRST CFIN1 + MOVE B,1(AB) ; GET CHANNEL + GETYP 0,BUFSTR-1(B) ; IS THERE AN OUTPUT BUFFER + SKIPN BUFSTR(B) + JRST CFIN1 + CAIE 0,TCHSTR + JRST CFINX1 +IFE ITS, PUSH P,A ; SAVE MODE + PUSHJ P,BFCLOS +IFE ITS,[ + POP P,A ; RESTORE MODE + MOVE 0,RDEVIC(B) + ILDB 0,0 + CAIN 0,"D + CAME A,[SIXBIT /PRINT/] + JRST CFINX1 + MOVE A,CHANNO(B) ; GET JFN + TLO A,400000 ; BIT MEANS DONT RELEASE JFN + CLOSF ; CLOSE THE FILE + FATAL CLOSF LOST? + MOVE E,B ; SAVE CHANNEL + MOVE A,CHANNO(B) + HRLI A,11 + MOVSI B,7700 ; MASK + MOVSI C,700 ; MAKE NEW SIZE 7 + CHFDB + HRLI A,12 + SETOM B + MOVE C,ACCESS(E) ; LENGTH IN CHARS + CHFDB +] + HLLZS BUFSTR-1(B) + SETZM BUFSTR(B) +CFINX1: HLLZS ACCESS-1(B) + JRST CFIN1 + +CFIN5: HRRM A,CHANNO-1(B) + JRST CFIN2 + ;SUBR TO DO .ACCESS ON A READ CHANNEL +;FORM: +;POSITIONS CHANNEL AT CHARACTER POSN FIX-NUMBER +;H. BRODIE 7/26/72 + +MFUNCTION MACCESS,SUBR,[ACCESS] + ENTRY 2 ;ARGS: CHANNEL AND FIX-NUMBER + +;CHECK ARGUMENT TYPES + GETYP A,(AB) + CAIE A,TCHAN ;FIRST ARG SHOULD BE CHANNEL + JRST WTYP1 + GETYP A,2(AB) ;TYPE OF SECOND + CAIE A,TFIX ;SHOULD BE FIX + JRST WTYP2 + +;CHECK DIRECTION OF CHANNEL + MOVE B,1(AB) ;B GETS PNTR TO CHANNEL + MOVEI B,DIRECT-1(B) ;GET DIRECTION OF CHANNEL + PUSHJ P,CHRWRD ;GRAB THE CHAR STRNG + JFCL + CAME B,[+1] + JRST MACCA + PUSH P,[2] ;ACCESS ON PRINTB CHANNEL + MOVE B,1(AB) + SKIPE BUFSTR(B) ;SEE IF WE MUST FLUSH PART BUFFER + PUSHJ P,BFCLS1 + JRST MACC +MACCA: PUSH P,[0] ; READ RATHER THAN READB INDICATOR + CAMN B,[ASCIZ /READ/] + JRST .+4 + CAME B,[ASCIZ /READB/] ; READB CHANNEL? + JRST WRONGD + AOS (P) ; SET INDICATOR FOR BINARY MODE + +;CHECK THAT THE CHANNEL IS OPEN +MACC: MOVE B,1(AB) ;GET BACK PTR TO CHANNEL + SKIPN CHANNO(B) ;CLOSED CHANNELS HAVE CHANNO ZEROED OUT + JRST CHNCLS ;IF CHNL CLOSED => ERROR + +;COMPUTE ACCESS PNTR TO ACCESS WORD CHAR IS IN +;REMAINDER IS NUMBER OF TIMES TO INCR BYTE POINTER +ADEVOK: SKIPGE C,3(AB) ;GET CHAR POSN...ALL NEGS = -5 + MOVNI C,-5 +;BUT .ACCESS -1 ISN'T IMPLEMENTED ON ITS YET, SO TELL HIM + JUMPGE C,MACC1 + PUSH TP,$TATOM + PUSH TP,EQUOTE NEGATIVE-ACCESS-NOT-ON-ITS + JRST CALER1 +MACC1: SKIPN (P) + IDIVI C,5 + +;SETUP THE .ACCESS + MOVE B,1(AB) ;GET BACK PTR TO CHANNEL + MOVE A,CHANNO(B) ;A GETS REAL CHANNEL NUMBER +IFN ITS,[ + ROT A,23. ;SET UP IN AC FIELD + IOR A,[.ACCESS 0,C] ;C CONTAINS PLACE TO ACCESS TO + +;DO IT TO IT! + XCT A +] +IFE ITS,[ + MOVE B,C + SFPTR ; DO IT IN TENEX + JRST ACCFAI + MOVE B,1(AB) ; RESTORE CHANNEL +] + POP P,E ; CHECK FOR READB MODE + CAIN E,2 + JRST DONADV ; PRINTB CHANNEL + SKIPE BUFSTR(B) ; IS THERE A READ BUFFER TO FLUSH + JRST .+3 + SETZM LSTCH(B) ; CLEAR OUT POSSIBLE EOF INDICATOR + JRST DONADV + +;NOW FORCE GETCHR TO DO A .IOT FIRST THING + MOVEI C,BUFSTR-1(B) ; FIND END OF STRING + PUSHJ P,BYTDOP" + SUBI A,2 ; LAST REAL WORD + HRLI A,010700 + MOVEM A,BUFSTR(B) + HLLZS BUFSTR-1(B) ; CLOBBER CHAR COUNT + MOVEM A,BUFSTR(B) + SETZM LSTCH(B) ;CLOBBER READ'S HIDDEN CHARACTER + +;NOW DO THE APPROPRIATE NUM OF BYTE ADVANCEMENTS + JUMPLE D,DONADV +ADVPTR: PUSHJ P,GETCHR + MOVE B,1(AB) ;RESTORE IN CASE CLOBBERED + SOJG D,ADVPTR + +DONADV: MOVE C,3(AB) ;FIXUP ACCESS SLOT IN CHNL + MOVEM C,ACCESS(B) + MOVE A,$TCHAN ;TYPE OF RESULT = "CHANNEL" + JRST FINIS ;DONE...B CONTAINS CHANNEL + +IFE ITS,[ +ACCFAI: PUSH TP,$TATOM + PUSH TP,EQUOTE ACCESS-FAILURE + JRST CALER1 +] + + +;WRONG TYPE OF DEVICE ERROR +WRDEV: PUSH TP,$TATOM + PUSH TP,EQUOTE NON-DSK-DEVICE + JRST CALER1 + +; BINARY READ AND PRINT ROUTINES + +MFUNCTION PRINTB,SUBR + + ENTRY 2 + +PBFL: PUSH P,. ; PUSH NON-ZERONESS + JRST BINI1 + +MFUNCTION READB,SUBR + + ENTRY + + PUSH P,[0] + HLRZ 0,AB + CAIG 0,-3 + CAIG 0,-7 + JRST WNA + +BINI1: GETYP 0,(AB) ; SHOULD BE UVEC OR STORE + CAIN 0,TUVEC + JRST BINI2 + CAIE 0,TSTORAGE + JRST WTYP1 ; ELSE LOSE +BINI2: MOVE B,1(AB) ; GET IT + HLRE C,B + SUBI B,(C) ; POINT TO DOPE + GETYP A,(B) + PUSHJ P,SAT" ; GET ITS ST.ALOC.TYPE + CAIE A,S1WORD + JRST WTYP1 + GETYP 0,2(AB) + CAIE 0,TCHAN ; BETTER BE A CHANNEL + JRST WTYP2 + MOVE B,3(AB) ; GET IT + MOVEI B,DIRECT-1(B) ; GET DIRECTION OF + PUSHJ P,CHRWRD ; INTO 1 WORD + JFCL + MOVNI E,1 + CAMN B,[ASCII /READB/] + MOVEI E,0 + CAMN B,[+1] + MOVE E,PBFL + JUMPL E,WRONGD ; LOSER + CAME E,(P) ; CHECK WINNGE + JRST WRONGD + MOVE B,3(AB) ; GET CHANNEL BACK + SKIPN A,IOINS(B) ; OPEN? + PUSHJ P,OPENIT ; LOSE + CAMN A,[JRST CHNCLS] + JRST CHNCLS ; LOSE, CLOSED + JUMPN E,BUFOU1 ; JUMP FOR OUTPUT + CAML AB,[-5,,] ; SKIP IF EOF GIVEN + JRST BINI5 + MOVE 0,4(AB) + MOVEM 0,EOFCND-1(B) + MOVE 0,5(AB) + MOVEM 0,EOFCND(B) +BINI5: SKIPE LSTCH(B) ; INDICATES IF EOF HIT + JRST BINEOF + MOVE A,1(AB) ; GET VECTOR + PUSHJ P,PGBIOI ; READ IT + HLRE C,A ; GET COUNT DONE + HLRE D,1(AB) ; AND FULL COUNT + SUB C,D ; C=> TOTAL READ + ADDM C,ACCESS(B) + JUMPGE A,BINIOK ; NOT EOF YET + SETOM LSTCH(B) +BINIOK: MOVE B,C + MOVSI A,TFIX ; RETURN AMOUNT ACTUALLY READ + JRST FINIS + +BUFOU1: SKIPE BUFSTR(B) ; ANY BUFFERS AROUND? + PUSHJ P,BFCLS1 ; GET RID OF SAME + MOVE A,1(AB) + PUSHJ P,PGBIOO + HLRE C,1(AB) + MOVNS C + addm c,ACCESS(B) + MOVE A,(AB) ; RET VECTOR ETC. + MOVE B,1(AB) + JRST FINIS + + +BINEOF: PUSH TP,EOFCND-1(B) + PUSH TP,EOFCND(B) + PUSH TP,$TCHAN + PUSH TP,B + MCALL 1,FCLOSE ; CLOSE THE LOSER + MCALL 1,EVAL + JRST FINIS + +OPENIT: PUSH P,E + PUSHJ P,OPNCHN ;TRY TO OPEN THE LOSER + JUMPE B,CHNCLS ;FAIL + POP P,E + POPJ P, + ; THESE SUBROUTINES BY NDR 9/16/73 TO FACILITATE THE +; TYPES OF IO NECESSARY TO MAKE MORE EFFICIENT USE OF +; THE NETWORK AND DO RELATED FILE TRANSFER TYPE OF JOBS. + +R1CHAR: SKIPN A,LSTCH(B) ; CHAR READING ROUTINE FOR FCOPY + PUSHJ P,RXCT + MOVEM A,LSTCH(B) + JUMPL A,.+2 ; IN CASE OF -1 ON STY + TRZN A,400000 ; EXCL HACKER + JRST .+4 + MOVEM A,LSTCH(B) ; SAVE DE-EXCLED CHAR + MOVEI A,"! + JRST .+2 + SETZM LSTCH(B) + PUSH P,C + HRRZ C,DIRECT-1(B) + CAIE C,5 ; IF DIRECTION IS 5 LONG THEN READB + JRST R1CH1 + AOS C,ACCESS-1(B) + CAMN C,[TFIX,,1] + AOS ACCESS(B) ; EVERY FIFTY INCREMENT + CAMN C,[TFIX,,5] + HLLZS ACCESS-1(B) + JRST .+2 +R1CH1: AOS ACCESS(B) + POP P,C + POPJ P, + +W1CHAR: CAIE A,15 ; CHAR WRITING ROUTINE, TEST FOR CR + JRST .+3 + SETOM CHRPOS(B) + AOSA LINPOS(B) + CAIE A,12 ; TEST FOR LF + AOS CHRPOS(B) ; IF NOT LF AOS CHARACTE5R POSITION + CAIE A,14 ; TEST FOR FORM FEED + JRST .+3 + SETZM CHRPOS(B) ; IF FORM FEED ZERO CHARACTER POSITION + SETZM LINPOS(B) ; AND LINE POSITION + CAIE A,11 ; IS THIS A TAB? + JRST .+6 + MOVE C,CHRPOS(B) + ADDI C,7 + IDIVI C,8. + IMULI C,8. ; FIX UP CHAR POS FOR TAB + MOVEM C,CHRPOS(B) ; AND SAVE + PUSH P,C + HRRZ C,DIRECT-1(B) + CAIE C,6 ; SIX LONG MUST BE PRINTB + JRST W1CH1 + AOS C,ACCESS-1(B) + CAMN C,[TFIX,,1] + AOS ACCESS(B) + CAMN C,[TFIX,,5] + HLLZS ACCESS-1(B) + JRST .+2 +W1CH1: AOS ACCESS(B) + PUSHJ P,WXCT + POP P,C + POPJ P, + +R1C: SUBM M,(P) ;LITTLE ENTRY FOR COMPILED STUFF + PUSH TP,$TCHAN ;SAVE THE CHANNEL TO BLESS IT + PUSH TP,B + MOVEI B,DIRECT-1(B) + PUSHJ P,CHRWRD + JFCL + CAME B,[ASCIZ /READ/] + CAMN B,[ASCII /READB/] + JRST .+2 + JRST BADCHN + POP TP,B + POP TP,(TP) + SKIPN IOINS(B) ; IS THE CHANNEL OPEN + PUSHJ P,OPENIT ; NO, GO DO IT + PUSHJ P,GRB ; MAKE SURE WE HAVE A READ BUFFER + PUSHJ P,R1CHAR ; AND GET HIM A CHARACTER + JRST MPOPJ ; THATS ALL FOLKS + +W1C: SUBM M,(P) + PUSHJ P,W1CI + JRST MPOPJ + +W1CI: PUSH TP,$TCHAN + PUSH TP,B + PUSH P,A ; ASSEMBLER ENTRY TO OUTPUT 1 CHAR + MOVEI B,DIRECT-1(B) + PUSHJ P,CHRWRD ; INTERNAL CALL TO W1CHAR + JFCL + CAME B,[ASCII /PRINT/] + CAMN B,[+1] + JRST .+2 + JRST BADCHN + POP TP,B + POP TP,(TP) + SKIPN IOINS(B) ; MAKE SURE THAT IT IS OPEN + PUSHJ P,OPENIT + PUSHJ P,GWB + POP P,A ; GET THE CHAR TO DO + JRST W1CHAR + +; ROUTINES TO REPLACE XCT IOINS(B) FOR INPUT AND OUTPUT +; THEY DO THE XCT THEN CHECK OUT POSSIBLE SCRIPTAGE--BLECH. + + +WXCT: PUSH P,A ; SAVE THE CHAR TO WRITE + PUSH TP,$TCHAN ; AND SAVE THE CHANNEL TOO + PUSH TP,B + XCT IOINS(B) ; DO THE REAL ONE + JRST DOSCPT ; AND CHECK OUT SCRIPTAGE + +RXCT: PUSH TP,$TCHAN + PUSH TP,B ; DO IT FOR READS, SAVE THE CHAN + XCT IOINS(B) ; READ IT + PUSH P,A ; AND SAVE THE CHAR AROUND + JRST DOSCPT ; AND CHECK OUT SCRIPTAGE + +DOSCPT: MOVE B,(TP) ;CHECK FOR SCRIPTAGE + SKIPN SCRPTO(B) ; IF ZERO FORGET IT + JRST SCPTDN ; THATS ALL THERE IS TO IT + PUSH P,C ; SAVE AN ACCUMULATOR FOR CLEANLINESS + GETYP C,SCRPTO-1(B) ; IS IT A LIST + CAIE C,TLIST + JRST BADCHN + PUSH TP,$TLIST + PUSH TP,[0] ; SAVE A SLOT FOR THE LIST + MOVE C,SCRPTO(B) ; GET THE LIST OF SCRIPT CHANNELS +SCPT1: GETYP B,(C) ; GET THE TYPE OF THIS SCRIPT CHAN + CAIE B,TCHAN + JRST BADCHN ; IF IT ISN'T A CHANNEL, COMPLAIN + HRRZ B,(C) ; GET THE REST OF THE LIST IN B + MOVEM B,(TP) ; AND STORE ON STACK + MOVE B,1(C) ; GET THE CHANNEL IN B + MOVE A,-1(P) ; AND THE CHARACTER IN A + PUSHJ P,W1CI ; GO TO INTERNAL W1C, IT BLESSES GOODIES + SKIPE C,(TP) ; GET THE REST OF LIST OF CHANS + JRST SCPT1 ; AND CYCLE THROUGH + SUB TP,[2,,2] ; CLEAN OFF THE LIST OF CHANS + POP P,C ; AND RESTORE ACCUMULATOR C +SCPTDN: POP P,A ; RESTORE THE CHARACTER + POP TP,B ; AND THE ORIGINAL CHANNEL + POP TP,(TP) + POPJ P, ; AND THATS ALL + + +; SUBROUTINE TO COPY FROM INCHAN TO OUTCHAN UNTIL EOF HIT +; ON THE INPUT CHANNEL +; CALL IS WHERE DEFAULTS ARE INCHAN AND OUTCHAN + + MFUNCTION FCOPY,SUBR,[FILECOPY] + + ENTRY + HLRE 0,AB + CAMGE 0,[-4] + JRST WNA ; TAKES FROM 0 TO 2 ARGS + + JUMPE 0,.+4 ; NO FIRST ARG? + PUSH TP,(AB) + PUSH TP,1(AB) ; SAVE IN CHAN + JRST .+6 + MOVE A,$TATOM + MOVE B,IMQUOTE INCHAN + PUSHJ P,IDVAL + PUSH TP,A + PUSH TP,B + HLRE 0,AB ; CHECK FOR SECOND ARG + CAML 0,[-2] ; WAS THERE MORE THAN ONE ARG? + JRST .+4 + PUSH TP,2(AB) ; SAVE SECOND ARG + PUSH TP,3(AB) + JRST .+6 + MOVE A,$TATOM ; LOOK UP OUTCHAN AS DEFAULT + MOVE B,IMQUOTE OUTCHAN + PUSHJ P,IDVAL + PUSH TP,A + PUSH TP,B ; AND SAVE IT + + MOVE A,-3(TP) + MOVE B,-2(TP) ; INPUT CHANNEL + MOVEI 0,0 ; INDICATE INPUT + PUSHJ P,CHKCHN ; CHECK FOR GOOD CHANNEL + MOVE A,-1(TP) + MOVE B,(TP) ; GET OUT CHAN + MOVEI 0,1 ; INDICATE OUT CHAN + PUSHJ P,CHKCHN ; CHECK FOR GOOD OUT CHAN + + PUSH P,[0] ; COUNT OF CHARS OUTPUT + + MOVE B,-2(TP) + PUSHJ P,GRB ; MAKE SURE WE HAVE READ BUFF + MOVE B,(TP) + PUSHJ P,GWB ; MAKE SURE WE HAVE WRITE BUFF + +FCLOOP: MOVE B,-2(TP) + PUSHJ P,R1CHAR ; GET A CHAR + JUMPL A,FCDON ; IF A NEG NUMBER WE GOT EOF + MOVE B,(TP) ; GET OUT CHAN + PUSHJ P,W1CHAR ; SPIT IT OUT + AOS (P) ; INCREMENT COUNT + JRST FCLOOP + +FCDON: SUB TP,[2,,2] ; POP OFF OUTCHAN + MCALL 1,FCLOSE ; CLOSE INCHAN + MOVE A,$TFIX + POP P,B ; GET CHAR COUNT TO RETURN + JRST FINIS + +CHKCHN: PUSH P,0 ; CHECK FOR GOOD TASTING CHANNEL + PUSH TP,A + PUSH TP,B + GETYP C,A + CAIE C,TCHAN + JRST CHKBDC ; GO COMPLAIN IN RIGHT WAY + MOVEI B,DIRECT-1(B) + PUSHJ P,CHRWRD + JRST CHKBDC + MOVE C,(P) ; GET CHAN DIRECT + CAMN B,CHKT(C) + JRST .+4 + ADDI C,2 ; TEST FOR READB OR PRINTB ALSO + CAME B,CHKT(C) ; TEST FOR CORRECT DIRECT + JRST CHKBDC + MOVE B,(TP) + SKIPN IOINS(B) ; MAKE SURE IT IS OPEN + PUSHJ P,OPENIT ; IF ZERO IOINS GO OPEN IT + SUB TP,[2,,2] + POP P, ; CLEAN UP STACKS + POPJ P, + +CHKT: ASCIZ /READ/ + ASCII /PRINT/ + ASCII /READB/ + +1 + +CHKBDC: POP P,E + MOVNI D,2 + IMULI D,1(E) + HLRE 0,AB + CAMLE 0,D ; SEE IF THIS WAS HIS ARG OF DEFAULT + JRST BADCHN + JUMPE E,WTYP1 + JRST WTYP2 + + ; FUNCTIONS READSTRING AND PRINTSTRING WORK LIKE READB AND PRINTB, +; THAT IS THEY READ INTO AND OUT OF STRINGS. IN ADDITION BOTH ACCEPT +; AN ADDITIONAL ARGUMENT WHICH IS THE NUMBER OF CHARS TO READ OR PRINT, IF +; IT IS DESIRED FOR THIS TO BE DIFFERENT THAN THE LENGTH OF THE STRING. + +; FORMAT IS +; AND BOTH SUBRS RETURN THE NUMBER OF CHARS READ OR WRITTEN + +; FORMAT FOR PRINTSTRING IS + +; THESE WERE CODED 9/16/73 BY NEAL D. RYAN + + MFUNCTION RSTRNG,SUBR,READSTRING + + ENTRY + PUSH P,[0] ; FLAG TO INDICATE READING + HLRE 0,AB + CAMG 0,[-1] + CAMG 0,[-9] + JRST WNA ; CHECK THAT IT HAS FROM 1 TO 4 ARGS + JRST STRIO1 + + MFUNCTION PSTRNG,SUBR,PRINTSTRING + + ENTRY + PUSH P,[1] ; FLAG TO INDICATE WRITING + HLRE 0,AB + CAMG 0,[-1] + CAMG 0,[-7] + JRST WNA ; CHECK THAT IT HAS FROM 1 TO 3 ARGS + +STRIO1: PUSH TP,[0] ; SAVE SLOT ON STACK + PUSH TP,[0] + GETYP 0,(AB) + CAIE 0,TCHSTR ; MAKE SURE WE GOT STRING + JRST WTYP1 + HRRZ 0,(AB) ; CHECK FOR EMPTY STRING + SKIPN (P) + JUMPE 0,MTSTRN + HLRE 0,AB + CAML 0,[-2] ; WAS A CHANNEL GIVEN + JRST STRIO2 + GETYP 0,2(AB) + CAIE 0,TCHAN + JRST WTYP2 ; SECOND ARG NOT CHANNEL + MOVE B,3(AB) + MOVEI B,DIRECT-1(B) + PUSHJ P,CHRWRD + JFCL + MOVNI E,1 ; CHECKING FOR GOOD DIRECTION + CAMN B,[ASCII /READ/] + MOVEI E,0 + CAMN B,[ASCII /PRINT/] + MOVEI E,1 + CAMN B,[+1] + MOVEI E,1 + CAMN B,[ASCII /READB/] + MOVEI E,0 + CAME E,(P) + JRST WRONGD ; MAKE SURE CHANNEL IS OPEN IN RIGHT MODE + PUSH TP,2(AB) + PUSH TP,3(AB) ; PUSH ON CHANNEL + JRST STRIO3 +STRIO2: MOVE B,IMQUOTE INCHAN + MOVSI A,TCHAN + SKIPE (P) + MOVE B,IMQUOTE OUTCHAN + PUSHJ P,IDVAL + TLZ A,TYPMSK#777777 + CAME A,$TCHAN + JRST BADCHN ; MAKE SURE WE GOT A GOOD DEFAULT CHANNEL + PUSH TP,A + PUSH TP,B +STRIO3: MOVE B,(TP) ; GET CHANNEL + SKIPN E,IOINS(B) ; MAKE SURE HE IS OPEN + PUSHJ P,OPENIT ; IF NOT GO OPEN + CAMN E,[JRST CHNCLS] + JRST CHNCLS ; CHECK TO SEE THAT CHANNEL ISNT ALREADY CLOSED +STRIO4: HLRE 0,AB + CAML 0,[-4] + JRST STRIO5 ; NO COUNT TO WORRY ABOUT + GETYP 0,4(AB) + MOVE E,4(AB) + MOVE C,5(AB) + CAIE 0,TCHSTR + CAIN 0,TFIX ; BETTER BE A FIXED NUMBER + JRST .+2 + JRST WTYP3 + HRRZ D,(AB) ; GET ACTUAL STRING LENGTH + CAIN 0,TFIX + JRST .+7 + SKIPE (P) ; TEST FOR WRITING + JRST .-7 ; IF WRITING WE GOT TROUBLE + PUSH P,D ; ACTUAL STRING LENGTH + MOVEM E,(TB) ; STUFF HIS FUNNY DELIM STRING + MOVEM C,1(TB) + JRST STRIO7 + CAML D,C ; MAKE SURE THE STRING IS LONG ENOUGH + JRST .+4 ; WIN + PUSH TP,$TATOM ; LOSAGE, COUNT TOO GREAT + PUSH TP,EQUOTE COUNT-GREATER-THAN-STRING-SIZE + JRST CALER1 + PUSH P,C ; PUSH ON MAX COUNT + JRST STRIO7 +STRIO5: +STRIO6: HRRZ C,(AB) ; GET CHAR COUNT + PUSH P,C ; AND PUSH IT ON STACK AS NO MAX COUNT GIVEN +STRIO7: HLRE 0,AB + CAML 0,[-6] + JRST .+6 + MOVE B,(TP) ; GET THE CHANNEL + MOVE 0,6(AB) + MOVEM 0,EOFCND-1(B) ; STUFF IN SLOT IN CHAN + MOVE 0,7(AB) + MOVEM 0,EOFCND(B) + PUSH TP,(AB) ; PUSH ON STRING + PUSH TP,1(AB) + PUSH P,[0] ; PUSH ON CURRENT COUNT OF CHARS DONE + MOVE 0,-2(P) ; GET READ OR WRITE FLAG + JUMPN 0,OUTLOP ; GO WRITE STUFF + + MOVE B,-2(TP) ; GET CHANNEL + PUSHJ P,GRB ; MAKE SURE WE HAVE BUFF + SKIPGE A,LSTCH(B) ; CHECK FOR EOF ALREADY READ PREVIOUSLY + JRST SRDOEF ; GO DOES HIS EOF HACKING +INLOP: INTGO + MOVE B,-2(TP) ; GET CHANNEL + MOVE C,-1(P) ; MAX COUNT + CAMG C,(P) ; COMPARE WITH COUNT DONE + JRST STREOF ; WE HAVE FINISHED + PUSHJ P,R1CHAR ; GET A CHAR + JUMPL A,INEOF ; EOF HIT + MOVE C,1(TB) + HRRZ E,(TB) ; DO WE HAVE A STRING TO WORRY US? + SOJL E,INLNT ; GO FINISH STUFFING + ILDB D,C + CAME D,A + JRST .-3 + JRST INEOF +INLNT: IDPB A,(TP) ; STUFF IN STRING + SOS -1(TP) ; DECREMENT STRING COUNT + AOS (P) ; INCREMENT CHAR COUNT + JRST INLOP + +INEOF: SKIPE C,LSTCH(B) ; IS THIS AN ! AND IS THERE A CHAR THERE + JRST .+3 ; YES + MOVEM A,LSTCH(B) ; NO SAVE THE CHAR + JRST .+3 + ADDI C,400000 + MOVEM C,LSTCH(B) + HRRZ C,DIRECT-1(B) ; GET THE TYPE OF CHAN + CAIN C,5 ; IS IT READB? + JRST .+3 + SOS ACCESS(B) ; FIX UP ACCESS FOR READ CHANNEL + JRST STREOF ; AND THATS IT + HRRZ C,ACCESS-1(B) ; FOR A READB ITS WORSE + MOVEI D,5 + SKIPG C + HRRM D,ACCESS-1(B) ; CHANGE A 0 TO A FIVE + SOS C,ACCESS-1(B) + CAMN C,[TFIX,,0] + SOS ACCESS(B) ; AND SOS THE WORD COUNT MAYBE + JRST STREOF + +SRDOEF: SETZM LSTCH(B) ; IN CASE OF -1, FLUSH IT + AOJE A,INLOP ; SKIP OVER -1 ON PTY'S + SUB TP,[6,,6] + SUB P,[3,,3] ; POP JUNK OFF STACKS + PUSH TP,EOFCND-1(B) + PUSH TP,EOFCND(B) ; WHAT WE NEED TO EVAL + PUSH TP,$TCHAN + PUSH TP,B + MCALL 1,FCLOSE ; CLOSE THE LOOSING CHANNEL + MCALL 1,EVAL ; EVAL HIS EOF JUNK + JRST FINIS + +OUTLOP: MOVE B,-2(TP) + PUSHJ P,GWB ; MAKE SURE WE HAVE BUFF +OUTLP1: INTGO + MOVE B,-2(TP) + MOVE C,-1(P) ; MAX COUNT TO DO + CAMG C,(P) ; HAVE WE DONE ENOUGH + JRST STREOF + ILDB A,(TP) ; GET THE CHAR + SOS -1(TP) ; SUBTRACT FROM STRING LENGTH + AOS (P) ; INC COUNT OF CHARS DONE + PUSHJ P,W1CHAR ; GO STUFF CHAR + JRST OUTLP1 + +STREOF: MOVE A,$TFIX + POP P,B ; RETURN THE LOOSER A COUNT OF WHAT WAS DONE + SUB P,[2,,2] + SUB TP,[6,,6] + JRST FINIS + + +GWB: SKIPE BUFSTR(B) + POPJ P, + PUSH TP,$TCHAN + PUSH TP,B ; GET US A WRITE BUFFER ON PRINTB CHAN + MOVEI A,BUFLNT + PUSHJ P,IBLOCK + MOVSI A,TWORD+.VECT. + MOVEM A,BUFLNT(B) + SETOM (B) + MOVEI C,1(B) + HRLI C,(B) + BLT C,BUFLNT-1(B) + MOVE C,B + HRLI C,440700 + MOVE B,(TP) + MOVEI 0,C.BUF + IORM 0,-4(B) + MOVEM C,BUFSTR(B) + MOVE C,[TCHSTR,,BUFLNT*5] + MOVEM C,BUFSTR-1(B) + SUB TP,[2,,2] + POPJ P, + + +GRB: SKIPE BUFSTR(B) + POPJ P, + PUSH TP,$TCHAN + PUSH TP,B ; GET US A READ BUFFER + MOVEI A,BUFLNT + PUSHJ P,IBLOCK + MOVEI C,BUFLNT(B) + POP TP,B + MOVEI 0,C.BUF + IORM 0,-4(B) + HRLI C,440700 + MOVEM C,BUFSTR(B) + MOVSI C,TCHSTR + MOVEM C,BUFSTR-1(B) + SUB TP,[1,,1] + POPJ P, + +MTSTRN: PUSH TP,$TATOM + PUSH TP,EQUOTE EMPTY-STRING + JRST CALER1 + + ; INPUT UNBUFFERING ROUTINE. THIS DOES THE CHARACTER UNBUFFERING +; FOR INPUT. THE OPEN ROUTINE SETUPS A PUSHJ P, TO +; THIS ROUTINE AS THE IOINS FOR A CHANNEL OPEN TO A NON-TTY DEVICE. + +; H. BRODIE 7/19/72 + +; CALLING SEQ: +; PUSHJ P,GETCHR +; B/ AOBJN PNTR TO CHANNEL VECTOR +; RETURNS NEXT CHARACTER IN AC A. +; ON ENCOUNTERING EITHER ^C OR NUL(^@) IT ASSUMES EOF AND +; TRANSMITS ONLY ^C ON SUCCESSIVE CALLS + + +GETCHR: +; FIRST GRAB THE BUFFER + GETYP A,BUFSTR-1(B) ; GET TYPE WORD + CAIN A,TCHSTR ; SKIPS IF NOT CHSTR (I.E. IF BAD BUFFER) + JRST GTGBUF ; IS GOOD BUFFER...SKIP ERROR RETURN +BDCHAN: PUSH TP,$TATOM ; ERROR RETURN + PUSH TP,EQUOTE BAD-INPUT-BUFFER + JRST CALER1 + +; BUFFER WAS GOOD +GTGBUF: HRRZ A,BUFSTR-1(B) ; GET LENGTH OF STRING + SOJGE A,GTGCHR ; JUMP IF STILL MORE + +; HERE IF THE BUFFER WAS EXHAUSTED (BYTE PNTR POINTS INTO DOPE WDS) +; GENERATE AN .IOT POINTER +;FIRST SAVE C AND D AS I WILL CLOBBER THEM +NEWBUF: PUSH P,C + PUSH P,D +IFN ITS,[ + LDB C,[600,,STATUS(B)] ; GET TYPE + CAIG C,2 ; SKIP IF NOT TTY +] +IFE ITS,[ + SKIPE BUFRIN(B) +] + JRST GETTTY ; GET A TTY BUFFER + + PUSHJ P,PGBUFI ; RE-FILL BUFFER + + JUMPGE A,BUFGOO ;SKIPS IF IOT COMPLETED...FIX UP CHANNEL + MOVEI C,1 ; MAKE SURE LAST EOF REALLY ENDS IT + ANDCAM C,-1(A) + MOVSI C,014000 ; GET A ^C + MOVEM C,(A) ;FAKE AN EOF + +; RESET THE BYTE POINTER IN THE CHANNEL. +; BUILD ONE USING THE PTR TO BEG OF BUFFER SAVED IN D +BUFGOO: HRLI D,440700 ; GENERATE VIRGIN LH + + MOVEM D,BUFSTR(B) ; STASH IN THE BUFFER BYTE PNTR SLOT + MOVEI A,BUFLNT*5-1 +BUFROK: POP P,D ;RESTORE D + POP P,C ;RESTORE C + + +; HERE IF THERE ARE CHARS IN BUFFER +GTGCHR: HRRM A,BUFSTR-1(B) + ILDB A,BUFSTR(B) ; GET A CHAR FROM BUFFER +IFE ITS,[ + CAIN A,32 ; TENEX EOF? + JRST .+3 +] + CAIE A,3 ; EOF? + POPJ P, ; AND RETURN +IFN ITS,[ + LDB A,[600,,STATUS(B)] ; CHECK FOR TTY + CAILE A,2 ; SKIP IF TTY +] +IFE ITS, SKIPN BUFRIN(B) + + JRST .+3 +RETEO1: HRRI A,3 + POPJ P, + + HRRZ A,@BUFSTR(B) ; SEE IF RSUBR START BIT IS ON + TRNN A,1 + MOVSI A,-1 + JRST RETEO1 + +IFN ITS,[ +PGBUFO: +PGBUFI: +] +IFE ITS,[ +PGBUFO: SKIPA D,[SOUT] +PGBUFI: MOVE D,[SIN] +] + SKIPGE A,BUFSTR(B) ; POINT TO CURRENT BUFFER POSIT + SUBI A,1 ; FOR 440700 AND 010700 START + SUBI A,BUFLNT-1 ; CALCULATE PNTR TO BEG OF BUFFER + HRLI A,-BUFLNT ; IOT (AOBJN) PNTR IN A +IFN ITS,[ +PGBIOO: +PGBIOI: MOVE D,A ; COPY FOR LATER + MOVSI C,TUVEC ; PREPARE TO HANDDLE INTS + MOVEM C,DSTO(PVP) + MOVEM C,ASTO(PVP) + MOVSI C,TCHAN + MOVEM C,BSTO(PVP) + +; BUILD .IOT INSTR + MOVE C,CHANNO(B) ; CHANNEL NUMBER IN C + ROT C,23. ; MOVE INTO AC FIELD + IOR C,[.IOT 0,A] ; IOR IN SKELETON .IOT + +; DO THE .IOT + ENABLE ; ALLOW INTS + XCT C ; EXECUTE THE .IOT INSTR + DISABLE + SETZM BSTO(PVP) + SETZM ASTO(PVP) + SETZM DSTO(PVP) + POPJ P, +] + +IFE ITS,[ +PGBIOT: PUSH P,D + PUSH TP,$TCHAN + PUSH TP,B + MOVEI C,(A) ; POINT TO BUFFER + HRLI C,444400 + MOVE D,A ; XTRA POINTER + MOVE A,CHANNO(B) ; FILE JFN + MOVE B,C + HLRE C,D ; - COUNT TO C + XCT (P) ; DO IT TO IT + MOVEI A,1(B) + MOVE B,(TP) + SUB TP,[2,,2] + SUB P,[1,,1] + JUMPGE C,CPOPJ ; NO EOF YET + HRLI A,(C) ; LOOK LIKE AN AOBJN PNTR + POPJ P, + +PGBIOO: SKIPA D,[SOUT] +PGBIOI: MOVE D,[SIN] + JRST PGBIOT +DOIOTO: PUSH P,D + PUSH P,C + PUSHJ P,PGBIOO +DOIOTE: POP P,C + POP P,D + POPJ P, +DOIOTI: PUSH P,D + PUSH P,C + PUSHJ P,PGBIOI + JRST DOIOTE +] + +; OUTPUT BUFFERING ROUTINES SIMILAR TO INPUT BUFFERING ROUTINES OF PREV PAGE + +PUTCHR: PUSH P,A + GETYP A,BUFSTR-1(B) ; CHECK TYPE OF ARG + CAIE A,TCHSTR ; MUST BE STRING + JRST BDCHAN + + HRRZ A,BUFSTR-1(B) ; GET CHAR COUNT + JUMPE A,REBUFF ; PREV RESET BUFF, UNDO SAME + +PUTCH1: POP P,A ; RESTORE CHAR + CAMN A,[-1] ; SPECIAL HACK? + JRST PUTCH2 ; YES GO HANDLE + IDPB A,BUFSTR(B) ; STUFF IT +PUTCH3: SOS A,BUFSTR-1(B) ; COUNT DOWN STRING + TRNE A,-1 ; SKIP IF FULL + POPJ P, + +; HERE TO FLUSH OUT A BUFFER + + PUSH P,C + PUSH P,D + PUSHJ P,PGBUFO ; SETUP AND DO IOT + HRLI D,440700 ; POINT INTO BUFFER + MOVEM D,BUFSTR(B) ; STORE IT + MOVEI A,BUFLNT*5 ; RESET COUNT + HRRM A,BUFSTR-1(B) + POP P,D + POP P,C + POPJ P, + +;HERE TO DA ^C AND TURN ON MAGIC BIT + +PUTCH2: MOVEI A,3 + IDPB A,BUFSTR(B) ; ZAP OUT THE ^C + MOVEI A,1 ; GET BIT + IORM A,@BUFSTR(B) ; ON GOES THE BIT + JRST PUTCH3 + +; RESET A FUNNY BUF + +REBUFF: MOVEI A,BUFLNT*5 ; 1ST COUNT + HRRM A,BUFSTR-1(B) + HRRZ A,BUFSTR(B) ; NOW POINTER + SUBI A,BUFLNT + HRLI A,440700 + MOVEM A,BUFSTR(B) ; STORE BACK + JRST PUTCH1 + + +; HERE TO FLUSH FINAL BUFFER + +BFCLOS: HLLZS ACCESS-1(B) ; CLEAR OUT KLUDGE PRINTB PART ACCESS COUNT + MOVE C,B ; THIS BUFFER FLUSHER THE WORK OF NDR + MOVEI B,RDEVIC-1(B) ; FIND OUT IF THIS IS NET + PUSHJ P,CHRWRD + JFCL + TRZ B,77777 ; LEAVE ONLY HIGH 3 CHARS + MOVEI A,0 ; FLAG 0=NET 1=DSK + CAME B,[ASCIZ /NET/] ; IS THIS NET? + AOS A + PUSH P,A ; SAVE THE RESULT OF OUR TEST + MOVE B,C ; RESTORE CHANNEL IN B + JUMPN A,BFCLNN ; DONT HAVE TO CHECK NET STATE + PUSH TP,$TCHAN + PUSH TP,B ; SAVE CHANNEL + PUSHJ P,INSTAT ; GET CURRENT NETWORK STATE + MOVE A,(B) ; GET FIRST ELEMENT OF STATE UVECTOR WHICH IS CUR STATE + POP TP,B ; RESTORE B + POP TP, + CAIE A,5 ; IS NET IN OPEN STATE? + CAIN A,6 ; OR ELSE IS IT IN RFNM WAIT STATE + JRST BFCLNN ; IF SO TO THE IOT + POP P, ; ELSE FLUSH CRUFT AND DONT IOT + POPJ P, ; RETURN DOING NO IOT +BFCLNN: MOVEI C,BUFLNT*5 ; NEW BUFFER FLUSHER BY NDR + HRRZ D,BUFSTR-1(B) ; SO THAT NET ALSO WORKS RIGHT + SUBI C,(D) ; GET NUMBER OF CHARS + IDIVI C,5 ; NUMBER OF FULL WORDS AND REST + PUSH P,D ; SAVE NUMBER OF ODD CHARS + SKIPGE A,BUFSTR(B) ; GET CURRENT BUF POSITION + SUBI A,1 ; FIX FOR 440700 BYTE POINTER + PUSH P,(A) ; SAVE THE ODD WORD OF BUFFER + MOVEI D,BUFLNT + SUBI D,(C) + SKIPE -1(P) + SUBI A,1 + ADDI D,1(A) ; FIX UP FOR POSSIBLE ODD CHARS + PUSH TP,$TUVEC + PUSH TP,D ; PUSH THE DOPE VECTOR ONTO THE STACK + JUMPE C,BFCLSR ; IN CASE THERE ARE NO FULL WORDS TO DO + HRL A,C + MOVE E,[A,,BUFLNT] + SUBI E,(C) ; FIX UP FOR BACKWARDS BLT + POP A,@E ; AMAZING GRACE + TLNE A,-1 + JRST .-2 + HRRO A,D ; SET UP AOBJN POINTER + SUBI A,(C) + TLC A,-1(C) + PUSHJ P,PGBIOO ; DO THE IOT OF ALL THE FULL WORDS +BFCLSR: HRRO A,(TP) ; GET IOT PTR FOR REST OF JUNK + SUBI A,1 ; POINT TO WORD BEFORE DOPE WORDS + POP P,0 ; GET BACK ODD WORD + POP P,C ; GET BACK ODD CHAR COUNT + POP P,D ; FLAG FOR NET OR DSK + JUMPE C,BFCLSD ; IF NO ODD CHARS FINISH UP + JUMPN D,BFCDSK ; GO FINISH OFF DSK + MOVEI D,7 + IMULI D,(C) ; FIND NO OF BITS TO SHIFT + LSH 0,-43(D) ; SHIFT BITS TO RIGHT PLACE + MOVEM 0,(A) ; STORE IN STRING + SUBI C,5 ; HOW MANY CHAR POSITIONS TO SKIP + MOVNI C,(C) ; MAKE C POSITIVE + LSH C,17 + TLC A,(C) ; MUNG THE AOBJN POINTER TO KLUDGE + PUSHJ P,PGBIOO ; DO IOT OF ODD CHARS +BFCLSD: HRRZ A,(TP) ; GET PTR TO DOPE WORD + SUBI A,BUFLNT + HRLI A,440700 ; AOBJN POINTER TO FIRST OF BUFFER + MOVEM A,BUFSTR(B) + MOVEI A,BUFLNT*5 + HRRM A,BUFSTR-1(B) + SUB TP,[2,,2] + POPJ P, + +BFCDSK: MOVE C,A ; FOR FUNNY AOBJN PTR + HLL C,BUFSTR(B) ; POINT INTO WORD AFTER LAST CHAR + TRZ 0,1 + MOVEM 0,(A) +IFN ITS, MOVEI 0,3 ; CONTROL C +IFE ITS, MOVEI 0,32 ; CNTL Z + IDPB 0,C + PUSHJ P,PGBIOO + JRST BFCLSD + +BFCLS1: HRRZ C,DIRECT-1(B) + MOVSI 0,(JFCL) + CAIE C,6 + MOVE 0,[AOS ACCESS(B)] + PUSH P,0 + HRRZ C,BUFSTR-1(B) + IDIVI C,5 + JUMPE D,BCLS11 + MOVEI A,40 ; PAD WITH SPACES + PUSHJ P,PUTCHR + XCT (P) ; AOS ACCESS IF NECESSARY + SOJG D,.-3 ; TO END OF WORD +BCLS11: POP P,0 + HLLZS ACCESS-1(B) + HRRZ C,BUFSTR-1(B) + CAIE C,BUFLNT*5 + PUSHJ P,BFCLOS + POPJ P, + + +; HERE TO GET A TTY BUFFER + +GETTTY: SKIPN C,EXBUFR(B) ; SKIP IF BUFFERS BACKED UP + JRST TTYWAI + HRRZ D,(C) ; CDR THE LIST + GETYP A,(C) ; CHECK TYPE + CAIE A,TDEFER ; MUST BE DEFERRED + JRST BDCHAN + MOVE C,1(C) ; GET DEFERRED GOODIE + GETYP A,(C) ; BETTER BE CHSTR + CAIE A,TCHSTR + JRST BDCHAN + MOVE A,(C) ; GET FULL TYPE WORD + MOVE C,1(C) + MOVEM D,EXBUFR(B) ; STORE CDR'D LIST + MOVEM A,BUFSTR-1(B) ; MAKE CURRENT BUFFER + MOVEM C,BUFSTR(B) + SOJA A,BUFROK + +TTYWAI: PUSHJ P,TTYBLK ; BLOCKED FOR TTY I/O + JRST GETTTY ; SHOULD ONLY RETURN HAPPILY + + ;INTERNAL DEVICE READ ROUTINE. + +;FOR INTERNAL DEVICES THIS ROUTINE APPLIES THE GIVEN OBJECT, +;CHECKS THAT THE RETURNED VALUE IS OF TYPE CHARACTER, +;AND RETURNS THAT AS THE NEXT CHARACTER IN THE "FILE" + +;H. BRODIE 8/31/72 + +GTINTC: PUSH TP,$TCHAN ;SAVE THE CHANNEL...WE'LL CLOBBER B + PUSH TP,B + PUSH P,C ;AND SAVE THE OTHER ACS + PUSH P,D + PUSH P,E + PUSH P,0 + PUSH TP,INTFCN-1(B) + PUSH TP,INTFCN(B) + MCALL 1,APPLY + GETYP A,A + CAIE A,TCHRS + JRST BADRET + MOVE A,B +INTRET: POP P,0 ;RESTORE THE ACS + POP P,E + POP P,D + POP P,C + POP TP,B ;RESTORE THE CHANNEL + SUB TP,[1,,1] ;FLUSH $TCHAN...WE DON'T NEED IT + POPJ P, + + +BADRET: PUSH TP,$TATOM + PUSH TP,EQUOTE INT-DEVICE-WRONG-TYPE-EVALUATION-RESULT + JRST CALER1 + +;INTERNAL DEVICE PRINT ROUTINE. + +;FOR INTERNAL DEVICES THIS ROUTINE APPLIES THE GIVEN OBJECT,(FUNCTION, SUBR, OR RSUBR) +;TO THE CURRENT CHARACTER BEING "PRINTED". + +PTINTC: PUSH TP,$TCHAN ;SAVE THE CHANNEL...WE'LL CLOBBER B + PUSH TP,B + PUSH P,C ;AND SAVE THE OTHER ACS + PUSH P,D + PUSH P,E + PUSH P,0 + PUSH TP,INTFCN-1(B) ;PUSH TYPE OF GIVEN OBJ + PUSH TP,INTFCN(B) ;PUSH THE SUPPLIED FUNCTION (OR SUBR ETC.) + PUSH TP,$TCHRS ;PUSH THE TYPE "CHARACTER" + PUSH TP,A ;PUSH THE CHAR + MCALL 2,APPLY ;APPLY THE FUNCTION TO THE CHAR + JRST INTRET + + + +; ROUTINE TO FLUSH OUT A PRINT BUFFER + +MFUNCTION BUFOUT,SUBR + + ENTRY 1 + + GETYP 0,(AB) + CAIE 0,TCHAN + JRST WTYP1 + + MOVE B,1(AB) + MOVEI B,DIRECT-1(B) + PUSHJ P,CHRWRD ; GET DIR NAME + JFCL + CAMN B,[ASCII /PRINT/] + JRST .+3 + CAME B,[+1] + JRST WRONGD + TRNE B,1 ; SKIP IF PRINT + PUSH P,[JFCL] + TRNN B,1 ; SKIP IF PRINTB + PUSH P,[AOS ACCESS(B)] + MOVE B,1(AB) + GETYP 0,BUFSTR-1(B) + CAIN 0,TCHSTR + SKIPN C,BUFSTR(B) ; BYTE POINTER? + JRST BFIN1 + HRRZ C,BUFSTR-1(B) ; CHARS LEFT + IDIVI C,5 ; MULTIPLE OF 5? + JUMPE D,BFIN2 ; YUP NO EXTRAS + + MOVEI A,40 ; PAD WITH SPACES + PUSHJ P,PUTCHR ; OUT IT GOES + XCT (P) ; MAYBE BUMP ACCESS + SOJG D,.-3 ; FILL + +BFIN2: PUSHJ P,BFCLOS ; WRITE OUT BUFFER +BFIN1: MOVSI A,TCHAN + JRST FINIS + + + +; FUNCTION TO GET THE FILE LENGTH OF A READ CHANNEL + +MFUNCTION FILLNT,SUBR,[FILE-LENGTH] + ENTRY 1 + + GETYP 0,(AB) + CAIE 0,TCHAN + JRST WTYP1 + MOVE B,1(AB) + MOVEI B,DIRECT-1(B) ; GET CHANNEL TYPE + PUSHJ P,CHRWRD + JFCL + CAME B,[ASCIZ /READ/] + JRST .+3 + PUSH P,[5] ; MULTIPLICATIVE FACTOR FOR READ + JRST .+4 + CAME B,[ASCII /READB/] + JRST WRONGD + PUSH P,[1] ; MULTIPLICATIVE FACTOR FOR READ + MOVE C,1(AB) +IFN ITS,[ + .CALL FILL1 + JRST FILLOS ; GIVE HIM A NICE FALSE +] +IFE ITS,[ + MOVE A,CHANNO(C) + SIZEF + JRST FILLOS +] + POP P,C + IMUL B,C + MOVE A,$TFIX + JRST FINIS + +IFN ITS,[ +FILL1: SETZ ; BLOCK FOR .CALL TO FILLEN + SIXBIT /FILLEN/ + CHANNO (C) + SETZM B + +FILLOS: MOVE A,CHANNO(C) + PUSHJ P,GFALS + JRST FINIS +] +IFE ITS,[ +FILLOS: PUSHJ P,TGFALS + JRST FINIS +] + + + ;THREE GENERALLY USEFUL ERROR ROUTINES FOR I/O + +NOTNET: +BADCHN: PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-CHANNEL + JRST CALER1 + +WRONGD: PUSH TP,$TATOM + PUSH TP,EQUOTE WRONG-DIRECTION-CHANNEL + JRST CALER1 + +CHNCLS: PUSH TP,$TATOM + PUSH TP,EQUOTE CHANNEL-CLOSED + JRST CALER1 + +BAD6: PUSH TP,$TATOM + PUSH TP,EQUOTE NON-6-BIT-CHARACTER-IN-FILE-NAME + JRST CALER1 + +DISLOS: MOVE C,$TCHSTR + MOVE D,CHQUOTE [DISPLAY NOT AVAILABLE] + PUSHJ P,INCONS + MOVSI A,TFALSE + JRST OPNRET + +NOCHAN: PUSH TP,$TATOM + PUSH TP,EQUOTE ITS-CHANNELS-EXHAUSTED + JRST CALER1 + +MODE1: 232020,,202020 +MODE2: 232023,,332320 + +END + + +TITLE GCHACK + +RELOCATABLE + +.INSRT MUDDLE > + +.GLOBAL FRMUNG,PARBOT,TYPVEC,GCHACK,REHASH,IMPURI,NWORDT +.GLOBAL TD.LNT,TD.GET,TD.PUT + +; THIS IS AN INTERNAL MUDDLE SUBROUTINE TO RUN AROUND GC SPACE DOING +; SOMETHING ARBITRARY TO EVERY ENTITY THEREIN + +; CALL -- +; A/ INSTRUCTION TO BE EXECUTED +; PUSHJ P,GCHACK + +GCHACK: HRRZ E,TYPVEC+1(TVP) ; SET UP TYPE POINTER + HRLI E,C ; WILL HAVE TYPE CODE IN C + MOVE B,PARBOT ; START AT PARBOT + SETOM 1(TP) ; FENCE POST PDL + PUSH P,A + MOVEI A,(TB) + PUSHJ P,FRMUNG ; MUNG CURRENT FRAME + POP P,A + +; FIRST HACK PAIR SPACE + +PHACK: CAML B,PARTOP ; SKIP IF MORE PAIRS + JRST VHACK ; DONE, NOW HACK VECTORS + GETYP C,(B) ; TYPE OF CURRENT PAIR + MOVE D,1(B) ; AND ITS DATUM + XCT A ; APPLY INS + ADDI B,2 + JRST PHACK + +; NOW DO THE SAME THING TO VECTOR SPACE + +VHACK: MOVE B,VECTOP ; START AT TOP, MOVE DOWN + SUBI B,1 ; POINT TO TOPMOST VECTOR +VHACK2: CAMG B,VECBOT ; SKIP IF MORE TO DO + JRST REHASQ ; SEE IF MUST REHASH + + HLRE D,-1(B) ; GET TYPE FROM D.W. + HLRZ C,(B) ; AND TOTAL LENGTH + SUBI B,(C)-1 ; POINT TO START OF VECTOR + PUSH P,B + SUBI C,2 ; CHECK WINNAGE + JUMPL C,BADV ; FATAL LOSSAGE + PUSH P,C ; SAVE COUNT + JUMPE C,VHACK1 ; EMPTY VECTOR, FINISHED + +; DECIDE BASED ON TYPE WHETHER GENERAL,UNIFORM OR SPECIAL + + JUMPGE D,UHACK ; UNIFORM + TRNE D,377777 ; SKIP IF GENERAL + JRST SHACK ; SPECIAL + +; FALL THROUGH TO GENERAL + +GHACK1: GETYP C,(B) ; LOOK A T 1ST ELEMENT + CAIE C,TCBLK + CAIN C,TENTRY ; FRAME ON STACK + SOJA B,EHACK + CAIE C,TUBIND + CAIN C,TBIND ; BINDING BLOCK + JRST BHACK + CAIN C,TGATOM ; ATOM WITH GDECL? + JRST GDHACK + MOVE D,1(B) ; GET DATUM + XCT A ; USER INS + ADDI B,2 ; NEXT ELEMENT + SOS (P) + SOSLE (P) ; COUNT ELEMENTS + SKIPGE (B) ; OR FENCE POST HIT + JRST VHACK1 + JRST GHACK1 + +; HERE TO GO OVER UVECTORS + +UHACK: CAMN A,[PUSHJ P,SBSTIS] + JRST VHACK1 ; IF THIS SUBSTITUTE, DONT DO UVEC + MOVEI C,(D) ; COPY UNIFORM TYPE + SUBI B,1 ; BACK OFF + +UHACK1: MOVE D,1(B) ; DATUM + XCT A + SOSLE (P) ; COUNT DOEN + AOJA B,UHACK1 + JRST VHACK1 + +; HERE TO HACK VARIOUS FLAVORS OF SPECIAL GOODIES + +SHACK: ANDI D,377777 ; KILL EXTRA CRUFT + CAIN D,SATOM + JRST ATHACK + CAIE D,STPSTK ; STACK OR + CAIN D,SPVP ; PROCESS + JRST GHACK1 ; TREAT LIKE GENERAL + CAIN D,SASOC ; ASSOCATION + JRST ASHACK + CAIG D,NUMSAT ; TEMPLATE MAYBE? + JRST BADV ; NO CHANCE + ADDI C,(B) ; POINT TO DOPE WORDS + SUBI D,NUMSAT+1 + HRLI D,(D) + ADD D,TD.LNT+1(TVP) + JUMPGE D,BADV ; JUMP IF INVALID TEMPLATE HACKER + + CAMN A,[PUSHJ P,SBSTIS] + JRST VHACK1 + +TD.UPD: PUSH P,A ; INS TO EXECUTE + XCT (D) + HLRZ E,B ; POSSIBLE BASIC LENGTH + PUSH P,[0] + PUSH P,E + MOVEI B,(B) ; ISOLATE LENGTH + PUSH P,C ; SAVE POINTER TO OBJECT + + PUSH P,[0] ; HOME FOR VALUES + PUSH P,[0] ; SLOT FOR TEMP + PUSH P,B ; SAVE + SUB D,TD.LNT+1(TVP) + PUSH P,D ; SAVE FOR FINDING OTHER TABLES + JUMPE E,TD.UP2 ; NO REPEATING SEQ + ADD D,TD.GET+1(TVP) ; COMP LNTH OF REPEATING SEQ + HLRE D,(D) ; D ==> - LNTH OF TEMPLATE + ADDI D,(E) ; D ==> -LENGTH OF REP SEQ + MOVNS D + HRLM D,-5(P) ; SAVE IT AND BASIC + +TD.UP2: SKIPG D,-1(P) ; ANY LEFT? + JRST TD.UP1 + + MOVE E,TD.GET+1(TVP) + ADD E,(P) + MOVE E,(E) ; POINTER TO VECTOR IN E + MOVEM D,-6(P) ; SAVE ELMENT # + SKIPN B,-5(P) ; SKIP IF "RESTS" EXIST + SOJA D,TD.UP3 + + MOVEI 0,(B) ; BASIC LNT TO 0 + SUBI 0,(D) ; SEE IF PAST BASIC + JUMPGE 0,.-3 ; JUMP IF O.K. + MOVSS B ; REP LNT TO RH, BASIC TO LH + IDIVI 0,(B) ; A==> -WHICH REPEATER + MOVNS A + ADD A,-5(P) ; PLUS BASIC + ADDI A,1 ; AND FUDGE + MOVEM A,-6(P) ; SAVE FOR PUTTER + ADDI E,-1(A) ; POINT + SOJA D,.+2 + +TD.UP3: ADDI E,(D) ; POINT TO SLOT + XCT (E) ; GET THIS ELEMENT INTO A AND B + MOVEM A,-3(P) ; SAVE TYPE FOR LATER PUT + MOVEM B,-2(P) + GETYP C,A ; TYPE TO C + MOVE D,B ; DATUME + MOVEI B,-3(P) ; POINTER TO HOME + MOVE A,-7(P) ; GET INS + XCT A ; AND DO IT + MOVE C,-4(P) ; GET POINTER FOR UPDATE OF ELEMENT + MOVE E,TD.PUT+1(TVP) + SOS D,-1(P) ; RESTORE COUNT + ADD E,(P) + MOVE E,(E) ; POINTER TO VECTOR IN E + MOVE B,-6(P) ; SAVED OFFSET + ADDI E,(B)-1 ; POINT TO SLOT + MOVE A,-3(P) ; RESTORE TYPE WORD + MOVE B,-2(P) + XCT (E) ; SMASH IT BACK + FATAL TEMPLATE LOSSAGE + MOVE C,-4(P) + JRST TD.UP2 + +TD.UP1: MOVE A,-7(P) ; RESTORE INS + SUB P,[10,,10] + MOVSI D,400000 ; RESTORE MARK/UNMARK BIT + JRST VHACK1 + +; FATAL LOSSAGE ARRIVES HERE + +BADV: FATAL GC SPACE IN A BAD STATE + +; HERE TO HACK SPECIAL CRUFT IN GENERAL VECTORS (STACKS) + +EHACK: MOVSI D,-FRAMLN ; SET UP AOBJN PNTR + +EHACK1: HRRZ C,ETB(D) ; GET 1ST TYPE + PUSH P,D ; SAVE AOBJN + MOVE D,1(B) ; GET ITEM + CAME A,[PUSHJ P,SBSTIS] ; DONT IF SUBSTITUTE DIFFERENT + XCT A ; USER GOODIE + POP P,D ; RESTORE AOBJN + ADDI B,1 ; MOVE ON + SOSLE (P) ; ALSO COUNT IN TOTAL VECTOR + AOBJN D,EHACK1 + AOJA B,GHACK1 ; AND GO ON + +; TABLE OF ENTRY BLOCK TYPES + +ETB: TSUBR + TTB + TAB + TSP + TPDL + TTP + TWORD + +; HERE TO GROVEL OVER BINDING BLOCKS + +BHACK: MOVEI C,TATOM ; ALSO TREEAT AS ATOM + MOVE D,1(B) + CAME A,[PUSHJ P,SBSTIS] ; DONT IF SUBSTITUTE DIFFERENT + XCT A + PUSHJ P,NXTGDY ; NEXT GOODIE + PUSHJ P,NXTGDY ; AND NEXT + MOVEI C,TSP ; TYPE THE BACK LOCATIVE + PUSHJ P,NXTGD1 ; AND NEXT + PUSH P,B + HLRZ D,-2(B) ; DECL POINTER + MOVEI B,0 ; MAKE SURE NO CLOBBER + MOVEI C,TDECL + XCT A ; DO THE THING BEING DONE + POP P,B + HRLM D,-2(B) ; FIX UP IN CASE CHANGED + JRST GHACK1 + +; HERE TO HACK ATOMS WITH GDECLS + +GDHACK: CAMN A,[PUSHJ P,SBSTIS] + JRST VHACK1 + + MOVEI C,TATOM ; TREAT LIKE ATOM + MOVE D,1(B) + XCT A + HRRZ D,(B) ; GET DECL + JUMPE D,VHACK1 + CAIN D,-1 ; WATCH OUT FOR MAINFEST + JRST VHACK1 + PUSH P,B ; SAVE POINTER + MOVEI B,0 + MOVEI C,TLIST + XCT A + POP P,B + HRRM D,(B) ; RESET + JRST VHACK1 + +; HERE TO HACK ATOMS + +ATHACK: ADDI B,1 ; POINT PRIOR TO OBL SLOT + MOVEI C,TOBLS ; GET TYPE + MOVE D,1(B) ; AND DATUM + CAME A,[PUSHJ P,SBSTIS] ; DONT IF SUBSTITUTE DIFFERENT + XCT A + JRST VHACK1 + +; HERE TO HACK ASSOCIATION BLOCKS + +ASHACK: MOVEI D,3 ; COUNT GOODIES TO MARK + +ASHAK1: PUSH P,D + MOVE D,1(B) + GETYP C,(B) + PUSH P,D ; SAVE POINTER + XCT A + POP P,D ; GET OLD BACK + CAME D,1(B) ; CHANGED? + TLO E,400000 ; SET NON-VIRGIN FLAG + POP P,D + PUSHJ P,BMP ; TO NEXT + SOJG D,ASHAK1 + +; HERE TO GOT TO NEXT VECTOR + +VHACK1: MOVE B,-1(P) ; GET POINTER + SUB P,[2,,2] ; FLUSH CRUFT + SOJA B,VHACK2 ; FIXUP POINTER AND GO ON + +; ROUTINE TO GET A GOODIE + +NXTGDY: GETYP C,(B) +NXTGD1: MOVE D,1(B) + XCT A ; DO IT TO IT +BMP: SOS -1(P) + SOSG -1(P) + JRST BMP1 + ADDI B,2 + POPJ P, +BMP1: SUB P,[1,,1] + JRST VHACK1 + +REHASQ: JUMPL E,REHASH ; HASH TABLE RAPED, FIX IT + POPJ P, + + +MFUNCTION SUBSTI,SUBR,[SUBSTITUTE] + +;THIS FUNCTION CODED BY NDR IS AN INCREDIBLE WAY TO +;KILL YOURSELF, EVEN IF YOU THINK YOU REALLY KNOW WHAT +;YOU ARE DOING. +;IT DOES A MINI-GC CHANGING EACH REFERENCE OF THE +;SECOND ITEM TO A REFERENCE OF THE FIRST ITEM, HA HA HA. +;BOTH ITEMS MUST BE OF THE SAME TYPE OR +;IF NOT, NEITHER CAN BE A TYPE REQUIRING TWO WORDS +; OF STORAGE, AND SUBSTITUTION CANT BE DONE IN +; UVECTORS WHEN THEY ARE DIFFERENT, AS WELL AS IN +; A FEW OTHER YUCKY PLACES. +;RETURNS ITEM TWO--THE ONLY WAY TO GET YOUR HANDS BACK ON IT + + ENTRY 2 + + +SBSTI1: GETYP A,2(AB) + CAIE A,TATOM + JRST SBSTI2 + MOVE B,3(AB) ; IMPURIFY HASH BUCKET MAYBE? + PUSHJ P,IMPURI + +SBSTI2: GETYP A,2(AB) ; GET TYPE OF SECOND ARG + MOVE D,A + PUSHJ P,NWORDT ; AND STORAGE ALLOCATION + MOVE E,A + GETYP A,(AB) ; GET TYPE OF FIRST ARG + MOVE B,A + PUSHJ P,NWORDT + CAMN B,D ; IF TYPES SAME, DONT CHECK FOR ALLOCATION + JRST SBSTI3 + CAIN E,1 + CAIE A,1 + JRST SBSTIL ; LOOSE, NOT BOTH ONE WORD GOODIES + +SBSTI3: MOVEI C,0 + CAIN D,0 ; IF GOODIE IS OF TYPE ZERO + MOVEI C,1 ; USE TYPE 1 TO KEEP INFO FROM CLOBBERAGE + PUSH TP,C + SUBI E,1 + PUSH TP,E ; 1=DEFERRED TYPE ITEM, 0=ELSE + PUSH TP,C + PUSH TP,D ; TYPE OF GOODIE + PUSH TP,C + PUSH TP,[0] + CAIN D,TLIST + AOS (TP) ; 1=TYPE LIST, 0=ELSE + PUSH TP,C + PUSH TP,2(AB) ; TYPE-WORD + PUSH TP,C + PUSH TP,3(AB) ; VALUE-WORD + PUSH TP,(AB) + PUSH TP,1(AB) ; TYPE-VALUE OF THINGS TO CHANGE INTO + MOVE A,[PUSHJ P,SBSTIR] + CAME B,D ; IF NOT SAME TYPE, USE DIFF MUNGER + MOVE A,[PUSHJ P,SBSTIS] + PUSHJ P,GCHACK ; DO-IT + MOVE A,-4(TP) + MOVE B,-2(TP) + JRST FINIS ; GIVE THE LOOSER A HANDLE ON HIS GOODIE + +SBSTIR: CAME D,-2(TP) + JRST LSUB ; THIS IS IT + CAME C,-10(TP) + JRST LSUB ; IF ITEM CANT BE SAME CHECK FOR LISTAGE + JUMPE B,LSUB+1 ; WE GOT HOLD OF A FUNNY GOODIE, JUST IGNORE IT + MOVE 0,(TP) + MOVEM 0,1(B) ; SMASH IT + MOVE 0,-1(TP) ; GET TYPE WORD + SKIPE -12(TP) ; IF THIS IS A DEFFERABLE ITEM THEN WE MUST + MOVEM 0,(B) ; ALSO SMASH THE TYPE WORD SLOT + +LSUB: SKIPN -6(TP) ; IF WE ARE LOOKING FOR LISTS, LOOK ON + POPJ P, ; ELSE THATS ALL + CAMG B,PARTOP + CAMGE B,PARBOT ; IS IT IN LIST SPACE? + POPJ P, ; WELL NO LIST SMASHING THIS TIME + HRRZ 0,(B) ; GET ITS LIST POINTER + CAME 0,-2(TP) + POPJ P, ; THIS ONE DIDNT MATCH + MOVE 0,(TP) ; GET THE NEW REST OF THE LIST + HRRM 0,(B) ; AND SMASH INTO THE REST OF THE LIST + POPJ P, + +SBSTIS: CAMN D,-2(TP) + CAME C,-10(TP) + POPJ P, + SKIPN B ; SEE IF THIS IS A FUNNY GOODIE WE NO TOUCHIE + POPJ P, + MOVE 0,(TP) + MOVEM 0,1(B) ; KLOBBER VALUE CELL + MOVE 0,-1(TP) + HLLM 0,(B) ; KLOBBER TYPE CELL, WHICH WE KNOW IS THERE + POPJ P, + +SBSTIL: PUSH TP,$TATOM ; LOSSAGE ON DIFFERENT TYPES, ONE DOUBLE WORD + PUSH TP,EQUOTE CANT-SUBSTITUTE-WITH-STRING-OR-TUPLE-AND-OTHER + JRST CALER1 + +END + + TITLE INITIALIZATION FOR MUDDLE + +RELOCATABLE + +LAST==1 ;POSSIBLE CHECKS DONE LATER + +.INSRT MUDDLE > + +SYSQ + +IFE ITS,[ +FATINS==.FATAL" +SEVEC==104000,,204 +] + +IMPURE + +OBSIZE==151. ;DEFAULT OBLIST SIZE + +.LIFG +.LOP .VALUE +.ELDC + + +.GLOBAL SETUP,TPBAS,GCPDL,GCPVP,PVBASE,PVLNT,PARNEW,AAGC,ICR,SWAP,OBLNT,MSGTYP +.GLOBAL ICLOS,OCLOS,GLOBASE,GLOBSP,PARBOT,PARTOP,CODTOP,START,BEGIN,VECBOT,VECTOP,TPBASE +.GLOBAL LISTEN,ROOT,INITIAL,TBINIT,TOPLEV,INTOBL,ERROBL,MUDOBL,TTYOPE,RESFUN,QUITTER +.GLOBAL IOINS,BUFRIN,IOIN2,ECHO,MTYI,MTYO,MUDSTR,P.TOP,TTICHN,TTOCHN,TYPVEC +.GLOBAL PDLBUF,PHIBOT,%UNAM,PURVEC,STOSTR,ISTOST,TD.LNT,TD.PUT,TD.GET,CAFRE1 +; INIITAL AMOUNT OF AFREE SPACE + +STOSTR: BLOCK 400 ; A RANDOM AMOUNT +ISTOST: 401,,0 + +SETUP: +IFN ITS, .SUSET [.RUNAM,,%UNAM] ; FOR AGC'S BENFIT + MOVE P,GCPDL ;GET A PUSH DOWN STACK +IFN ITS, .SUSET [.SMASK,,[200000]] ; ENABLE PDL OVFL + MOVE TVP,[-TVLNT,,TVBASE] ;GET INITIAL TRANSFER VECTOR + PUSHJ P,TTYOPE ;OPEN THE TTY + AOS A,20 ; TOP OF LOW SEGG + HRRZM A,P.TOP + SOSN A ; IF NOTHING YET +IFN ITS, .SUSET [.RMEMT,,P.TOP] +IFE ITS, JRST 4, + HRRE A,P.TOP ; CHECK TOP + TRNE A,377777 ; SKIP IF ALL LOW SEG + JUMPL A,PAGLOS ; COMPLAIN + MOVE A,HITOP ; FIND HI SEG TOP + ADDI A,1777 + ANDCMI A,1777 + MOVEM A,RHITOP ; SAVE IT + MOVEI A,200 + SUBI A,PHIBOT + JUMPE A,HIBOK + MOVSI A,(A) + HRRI A,200 +IFN ITS,[ + .CALL GIVCOR + .VALUE +] +HIBOK: MOVEI B,[ASCIZ /MUDDLE INITIALIZATION. +/] + PUSHJ P,MSGTYP ;PRINT IT + MOVE A,CODTOP ;CHECK FOR A WINNING LOAD + CAML A,VECBOT ;IT BETTER BE LESS + JRST DEATH1 ;LOSE COMPLETELY + MOVE B,PARBOT ;CHECK FOR ANY PAIRS + CAME B,PARTOP ;ANY LOAD/ASSEMBLE TIME PAIRS? + JRST PAIRCH ;YES CHECK THEM + ADDI A,2000 ;BUMP UP + ANDCMI A,1777 + MOVEM A,PARBOT ;UPDATE PARBOT AND TOP + MOVEM A,PARTOP +SETTV: MOVE PVP,[-PVLNT*2,,GCPVP] ;AND A PROCESS VECTOR + MOVEI A,(PVP) ;SET UP A BLT + HRLI A,PVBASE ;FROM PROTOTYPE + BLT A,PVLNT*2-1(PVP) ;INITIALIZE + MOVE TP,[-ITPLNT,,TPBAS] ;GET A STACK FOR THIS PROCCESS + MOVEI TB,(TP) ;AND A BASE + HRLI TB,1 + SUB TP,[1,,1] ;POP ONCE + +; ALLOCATE SOME OBLISTS FOR INITIAL ATOMS + + PUSH P,[5] ;COUNT INITIAL OBLISTS + + PUSH P,OBLNT ;SAVE CURRENT OBLIST DEFAULT SIZE + +MAKEOB: SOS A,-1(P) + MOVE A,OBSZ(A) + MOVEM A,OBLNT + MCALL 0,MOBLIST ;GOBBLE AN OBLIST + PUSH TP,$TOBLS ;AND SAVE THEM + PUSH TP,B + MOVE A,(P)-1 ;COUNT DOWN + MOVEM B,@OBTBL(A) ;STORE + JUMPN A,MAKEOB + + POP P,OBLNT ;RESTORE DEFAULT OBLIST SIZE + + MOVE C,TVP ;MAKE 2 COPIES OF XFER VECTOR POINTER + MOVE D,TVP + +;MAIN INITIALIZE LOOP - SCAN XFER VECTOR FOR ATOMS, UPDATE +;OFFSETS IN CODE, UNIQUIFY ATOMS AND COMPACT XFER VECTOR + +ILOOP: HLRZ A,(C) ;FIRST TYPE + JUMPE A,TVEXAU ;USEFUL STUFF EXHAUSTED + CAIN A,TCHSTR ;CHARACTER STRING? + JRST CHACK ;YES, GO HACK IT + CAIN A,TATOM ;ATOM? + JRST ATOMHK ;YES, CHECK IT OUT + MOVE A,(C) ;MOVE TO NEW HOME (MAY BE SAME) + MOVEM A,(D) + MOVE A,1(C) + MOVEM A,1(D) +SETLP: AOS (P) ;COUNT NUMBER OF PAIRS IN XFER VECTOR + ADD D,[2,,2] ;OUT COUNTER +SETLP1: ADD C,[2,,2] ;AND IN COUNTER + JUMPL C,ILOOP ;JUMP IF MORE TO DO + ;NEW XFER VECTOR FINISHED, NOW GIVE AWAY THE REST + +TVEXAU: HLRE B,C ;GET -LENGTH + SUBI C,(B) ;POIT TO DOPE WORD + ANDI C,-1 ;NO LH + HLRZ A,1(C) ;INTIAL LENGTH TO A + MOVEI E,(C) ;COPY OF POINTER TO DOPW WD + SUBI E,(D) ;AMOUNT LEFT OVER TO E + HRLZM E,1(C) ;CLOBBER INTO DOPE WORD FOR GARBAGE + MOVSI E,(E) ;PREPARE TO UPDATE TVP + ADD TVP,E ;NOW POINTS TO THE RIGHT AMOUNT + HLRE B,D ;-AMOUNT LEFT TO B + ADD B,A ;AMOUNT OF GOOD STUFF + HRLZM B,1(D) ;STORE IT IN GODD DOPE WORD + MOVSI E,400000 ;CLOBBER TO GENERAL IN BOTH CASES + MOVEM E,(C) + MOVEM E,(D) + + +; FIX UP TYPE VECTOR + + MOVE A,TYPVEC+1(TVP) ;GET POINTER + MOVEI 0,0 ;FOR POSSIBLE NULL SLOTS + MOVSI B,TATOM ;SET TYPE TO ATOM + +TYPLP: HLLM B,(A) ;CHANGE TYPE TO ATOM + MOVE C,@1(A) ;GET ATOM + MOVEM C,1(A) + ADD A,[2,,2] ;BUMP + JUMPL A,TYPLP + ; CLOSE TTY CHANNELS +IFN ITS,[ + + .CLOSE 1, + .CLOSE 2, +] + +;GENERAT THE LOGICAL TTY IN AND OUT CHANNELS + +;SETUP CALL TO OPEN OUTPUT TTY CHANNNEL + + IRP A,,[[PRINT,TCHSTR],[TTY:,TCHSTR]] + IRP B,C,[A] + PUSH TP,$!C + PUSH TP,CHQUOTE B + .ISTOP + TERMIN + TERMIN + + MCALL 2,FOPEN ;OPEN THE OUT PUT CHANNEL + MOVEM B,TTOCHN+1(TVP) ;SAVE IT + +;ASSIGN AS GLOBAL VALUE + + PUSH TP,$TATOM + PUSH TP,IMQUOTE OUTCHAN + PUSH TP,A + PUSH TP,B + MOVE A,[PUSHJ P,MTYO] ;MORE WINNING INS + MOVEM A,IOINS(B) ;CLOBBER + MCALL 2,SETG + +;SETUP A CALL TO OPEN THE TTY CHANNEL + + IRP A,,[[READ,TCHSTR],[TTY:,TCHSTR]] + IRP B,C,[A] + PUSH TP,$!C + PUSH TP,CHQUOTE B + .ISTOP + TERMIN + TERMIN + + MCALL 2,FOPEN ;OPEN INPUTCHANNEL + MOVEM B,TTICHN+1(TVP) ;SAVE IT + PUSH TP,$TATOM ;ASSIGN AS A GLOBAL VALUE + PUSH TP,IMQUOTE INCHAN + PUSH TP,A + PUSH TP,B + MOVE C,BUFRIN(B) ;GET AUX BUFFER PTR + MOVE A,[PUSHJ P,MTYI] + MOVEM A,IOIN2(C) ;MORE OF A WINNER + MOVE A,[PUSHJ P,MTYO] + MOVEM A,ECHO(C) ;ECHO INS + MCALL 2,SETG + +;GENERATE AN INITIAL PROCESS AND SWAP IT IN + + PUSHJ P,ICR ;CREATE IT + MOVEI 0,RUNING + MOVEM 0,PSTAT"+1(B) + MOVE D,B ;SET UP TO CALL SWAP + JSP C,SWAP ;AND SWAP IN + MOVEM PVP,MAINPR" ;SAVE AS THE MAIN PROCESS + PUSH TP,[TENTRY,,TOPLEV] ;BUILD DUMMY FRAME + PUSH TP,[1,,0] + MOVEI A,-1(TP) + PUSH TP,A + PUSH TP,SP + PUSH TP,P + MOVE C,TP ;COPY TP + ADD C,[3,,3] ;FUDGE + PUSH TP,C ;TPSAV PUSHED + PUSH TP,[TOPLEV] + HRRI TB,(TP) ;SETUP TB + HRLI TB,2 + ADD TB,[1,,1] + MOVEM TB,TBINIT+1(PVP) + MOVSI A,TSUBR + MOVEM A,RESFUN(PVP) + MOVEI A,LISTEN" + MOVEM A,RESFUN+1(PVP) + PUSH TP,$TATOM + PUSH TP,IMQUOTE THIS-PROCESS + PUSH TP,$TPVP + PUSH TP,PVP + MCALL 2,SETG + +; FIND TVP OFFSET FOR THE ATOM 'T' FOR TEMPLATE + + MOVEI A,MQUOTE T + SUBI A,(TVP) +TVTOFF==0 + ADDSQU TVTOFF + + MOVEM A,SQULOC-1 + + PUSH TP,$TATOM + PUSH TP,IMQUOTE TVTOFF,,MUDDLE + PUSH TP,$TFIX + PUSH TP,A + MCALL 2,SETG + +; HERE TO SETUP SQUOZE TABLE IN PURE CORE + + PUSHJ P,SQSETU ; GO TO ROUTINE + + MOVEI A,400000 ; FENCE POST PURE SR VECTOR + HRRM A,PURVEC(TVP) + MOVE A,TP + HLRE B,A + SUBI A,-PDLBUF(B) ;POINT TO DOPE WORDS + MOVEI B,12 ;GROWTH SPEC + IORM B,(A) + MOVEI 0,ISTOST + MOVEM 0,CODTOP + PUSHJ P,AAGC ;DO IT + AOJL A,.-1 + MOVE A,TPBASE+1(PVP) + SUB A,[640.,,640.] + MOVEM A,TPBASE+1(PVP) + +; CREATE LIST OF ROOT AND NEW OBLIST + + MOVEI A,5 + PUSH P,A + +NAMOBL: PUSH TP,$TATOM + PUSH TP,@OBNAM-1(A) ; NAME + PUSH TP,$TATOM + PUSH TP,IMQUOTE OBLIST + PUSH TP,$TOBLS + PUSH TP,@OBTBL-1(A) + MCALL 3,PUT ; NAME IT + SOS A,(P) + PUSH TP,$TOBLS + PUSH TP,@OBTBL(A) + PUSH TP,$TATOM + PUSH TP,IMQUOTE OBLIST + PUSH TP,$TATOM + PUSH TP,@OBNAM(A) + MCALL 3,PUT + SKIPE A,(P) + JRST NAMOBL + SUB P,[1,,1] + +;Define MUDDLE version number + MOVEI A,5 + MOVEI B,0 ;Initialize result + MOVE C,[440700,,MUDSTR+2] +VERLP: ILDB D,C ;Get next charcter digit + CAIG D,"9 ;Non-digit ? + CAIGE D,"0 + JRST VERDEF + SUBI D,"0 ;Convert to number + IMULI B,10. + ADD B,D ;Include number into result + SOJG A,VERLP ;Finished ? +VERDEF: + PUSH TP,$TATOM + PUSH TP,MQUOTE MUDDLE + PUSH TP,$TFIX + PUSH TP,B + MCALL 2,SETG ;Make definition +OPIPC: +IFN ITS,[ + PUSH TP,$TCHSTR + PUSH TP,CHQUOTE IPC + PUSH TP,$TATOM + PUSH TP,MQUOTE IPC-HANDLER + MCALL 1,GVAL + PUSH TP,A + PUSH TP,B + PUSH TP,$TFIX + PUSH TP,[1] + MCALL 3,ON + MCALL 0,IPCON +] + +; Allocate inital template tables + + MOVEI A,10 + PUSHJ P,CAFRE1 + ADD B,[10,,10] ; REST IT OFF + MOVEM B,TD.LNT+1(TVP) + MOVEI A,10 + PUSHJ P,CAFRE1 + MOVEI 0,TUVEC ; SETUP UTYPE + HRLM 0,10(B) + MOVEM B,TD.GET+1(TVP) + MOVEI A,10 + PUSHJ P,CAFRE1 + MOVEI 0,TUVEC ; SETUP UTYPE + HRLM 0,10(B) + MOVEM B,TD.PUT+1(TVP) + +PTSTRT: MOVEI A,SETUP + ADDI A,1 + SUB A,PARBOT ;FIND WHERE PAIRS SHOULD GO + MOVEM A,PARNEW +IFE ITS,[ + MOVEI A,400000 + MOVE B,[1,,START] + SEVEC +] + PUSH P,[14.,,14.] ;PUSH A SMALL PRGRM ONTO P + MOVEI A,1(P) ;POINT TO ITS START + PUSH P,[JRST AAGC] ;GO TO AGC + PUSH P,[MOVE B,PSTO+1(PVP)] ;GET SAVED P + PUSH P,[SUB B,-13.(P)] ;FUDGE TO POP OFF PROGRAM + PUSH P,[MOVEM B,PSAV(TB)] ;INTO FRAME + PUSH P,[MOVE B,TPSTO+1(PVP)] ;GET TP + PUSH P,[MOVEM B,TPSAV(TB)] ;STORE IT + PUSH P,[MOVE B,SPSTO+1(PVP)] ;SP + PUSH P,[MOVEM B,SPSAV(TB)] + PUSH P,[MOVEI B,TOPLEV] ;WHERE TO GO + PUSH P,[MOVEM B,PCSAV(TB)] +IFN ITS, PUSH P,[MOVSI B,(.VALUE )] +IFE ITS, PUSH P,[MOVSI B,(JRST 4,)] + PUSH P,[HRRI B,C] + PUSH P,[JRST B] ;GO DO VALRET + PUSH P,[B] + PUSH P,A ; PUSH START ADDR + MOVE B,[JRST -11.(P)] + MOVE 0,[JUMPA START] + MOVE C,[ASCII \0/9\] + MOVE D,[ASCII \B/1Q\] + MOVE E,[ASCIZ \ +* +\] ;TERMINATE + POPJ P, ; GO + +; CHECK PAIR SPACE + +PAIRCH: CAMG A,B + JRST SETTV ;O.K. + +DEATH1: MOVEI B,[ASCIZ /LOSSAGE--CODE AND DATA OVERLAP +/] + PUSHJ P,MSGTYP + .VALUE + +;CHARACTER STRING HACKER + +CHACK: MOVE A,(C) ;GET TYPE + HLLZM A,(D) ;STORE IN NEW HOME + MOVE B,1(C) ;GET POINTER + HLRZ E,B ;-LENGHT + HRRM E,(D) + PUSH P,E+1 ; IDIVI WILL CLOBBER + ADDI E,4+5*2 ; ROUND AND ACCOUNT FOR DOPE WORDS + IDIVI E,5 ; E/ WORDS LONG + PUSHJ P,EBPUR ; MAKE A PURIFIED COPY + POP P,E+1 + HRLI B,440700 ;MAKE POINT BYTER + MOVEM B,1(D) ;AND STORE IT + ANDI A,-1 ;CLEAR LH OF A + JUMPE A,SETLP ;JUMP IF NO REF + MOVE E,(P) ;GET OFFSET + LSH E,1 + HRRZ B,-1(A) ;SEE IF PREVIOUS INSTRUCTION REFERS TO $TCHSTR + CAIE B,$TCHSTR ;SKIP IF IT DOES + JRST CHACK1 ;NO, JUST DO CHQUOTE PART + HRRM E,-1(A) ;CLOBBER + MOVEI B,TVP + DPB B,[220400,,-1(A)] ;CLOBBER INDEX FIELD +CHACK1: ADDI E,1 + HRRM E,(A) ;STORE INTO REFERENCE + JRST SETLP + +; SUBROUTINE TO COPY A HUNK OF STRUCTURE TO THE HIGH SEGMENT + +EBPUR: PUSH P,E + PUSH P,A + ADD E,HITOP ; GET NEW TOP + CAMG E,RHITOP ; SKIP IF TOO BIG + JRST EBPUR1 + +; CODE TO GROW HI SEG + + MOVEI A,2000 + ADDB A,RHITOP ; NEW TOP +IFN ITS,[ + ASH A,-10. ; NUM OF BLOCKS + SUBI A,1 ; BLOCK TO GET + .CALL HIGET + .VALUE +] + +EBPUR1: MOVEI A,-1(E) ; NEEDED TO TERMINATE BLT + EXCH E,HITOP + HRLI E,(B) + MOVEI B,(E) + BLT E,(A) + POP P,A + POP P,E + POPJ P, + +GIVCOR: SETZ + SIXBIT /CORBLK/ + 1000,,0 + 1000,,-1 + SETZ A + +HIGET: SETZ + SIXBIT /CORBLK/ + 1000,,100000 + 1000,,-1 + A + 401000,,400001 + + +; PROCESS AN ATOM AND ADD IT TO AN APPROPRIATE OBLIST IF IT ISN'T +; ALREADY THERE + +ATOMHK: PUSH TP,$TOBLS ; SAVE OBLIST + PUSH TP,[0] ; FILLED IN LATER + PUSH TP,$TVEC ;SAVE TV POINTERS + PUSH TP,C + PUSH TP,$TVEC + PUSH TP,D + MOVE B,1(C) ;GET THE ATOM + PUSH TP,$TATOM ;AND SAVE + PUSH TP,B + HRRZ A,(B) ;GET OBLIST SPEC FROM ATOM + LSH A,1 + ADDI A,1(TB) ;POINT TO ITS HOME + PUSH TP,$TOBLS + PUSH TP,(A) ;AND SAV IT + MOVE A,(A) + MOVEM A,-10(TP) ; CLOBBER + HLRE E,A + MOVNS E + + ADD B,[3,,3] ;POINT TO ATOM'S PNAME + MOVEI A,0 ;FOR HASHING + XOR A,(B) + AOBJN B,.-1 + TLZ A,400000 ;FORCE POSITIVE RESULT + IDIV A,E + HRLS B ;REMAINDER IN B IS BUCKET + ADDB B,(TP) ;UPDATE POINTER + + SKIPN C,(B) ;GOBBLE BUCKET CONTENTS + JRST USEATM ;NONE, LEAVE AND USE THIS ATOM +OBLOO3: MOVE E,-2(TP) ;RE-GOBBLE ATOM + ADD E,[3,,3] ;POINT TO PNAME + SKIPN D,1(C) ;CHECK LIST ELEMNT + JRST NXTBCK ;0, CHECK NEXT IN THIS BUCKET + ADD D,[3,,3] ;POINT TO PNAME +OBLOO2: MOVE A,(D) ;GET A WORD + CAME A,(E) ;COMPARE + JRST NXTBCK ;THEY DIFFER, TRY NEX +OBLOOP: AOBJP E,CHCKD ;COULD BE A MATCH, GO CHECK + AOBJN D,OBLOO2 ;HAVEN'T LOST YET + +NXTBCK: HRRZ C,(C) ;CDR THE LIST + JUMPN C,OBLOO3 ;IF NOT NIL, KEEP TRYING + +;HERE IF THIS ATOM MUST BE PUT ON OBLIST + +USEATM: MOVE B,-2(TP) ; GET ATOM + HLRZ 0,(B) ; SEE IF PURE OR NOT + TRNN 0,400000 ; SKIP IF IMPURE + JRST PURATM + MOVE B,(TP) ;POINTER TO BUCKET + HRRZ C,(B) ;POINTER TO LIST IN THIS BUCKET + PUSH TP,$TATOM ;GENERATE CALL TO CONS + PUSH TP,-3(TP) + PUSH TP,$TLIST + PUSH TP,C + MCALL 2,CONS ;CONS IT UP + MOVE C,(TP) ;REGOBBLE BUCKET POINTER + HRRZM B,(C) ;CLOBBER + MOVE B,-2(TP) ;POINT TO ATOM + MOVE C,-10(TP) ; GET OBLIST + MOVEM C,2(B) ; INTO ATOM + PUSHJ P,VALMAK ;MAKE A GLOBAL VALUE FOR THIS LOSER +PURAT2: MOVE C,-6(TP) ;RESET POINTERS + MOVE D,-4(TP) + SUB TP,[12,,12] + MOVE B,(C) ;MOVE THE ENTRY + HLLZM B,(D) ;DON'T WANT REF POINTER STORED + MOVE A,1(C) ;AND MOVE ATOM + MOVEM A,1(D) + MOVE A,(P) ;GET CURRENT OFFSET + LSH A,1 + ADDI A,1 + ANDI B,-1 ;CHECK FOR REAL REF + JUMPE B,SETLP1 ;DON'T SAVE THIS ATOM ON TVP + HRRM A,(B) ;CLOBBER CODE + JRST SETLP + + +; HERE TO MAKE A PURE ATOM + +PURATM: HRRZ B,-2(TP) ; POINT TO IT + HLRE E,-2(TP) ; - LNTH + MOVNS E + ADDI E,2 + PUSHJ P,EBPUR ; PURE COPY + HRRM B,-2(TP) ; AND STORE BACK + HRRO B,(TP) ; GET BUCKET BACK +PURAT1: HRRZ C,(B) ; GET CONTENTS + JUMPE C,HICONS ; AT END, OK + CAIL C,HIBOT ; SKIP IF IMPURE + JRST HICONS ; CONS IT ON + MOVEI B,(C) + JRST PURAT1 + +HICONS: HRLI C,TATOM + PUSH P,C + PUSH P,-2(TP) + PUSH P,B + MOVEI B,-2(P) + MOVEI E,2 + PUSHJ P,EBPUR ; MAKE PURE LIST CELL + + MOVE C,(P) + SUB P,[3,,3] + HRRM B,(C) ; STORE IT + MOVE B,1(B) ; ATOM BACK + MOVE C,-6(TP) ; GET TVP SLOT + HRRM B,1(C) ; AND STORE + HLRZ 0,(B) ; TYPE OF VAL + MOVE C,B + CAIN 0,TUNBOU ; NOT UNBOUND? + JRST PURAT3 ; UNBOUND, NO VAL + MOVEI E,2 ; COUNT AGAIN + PUSHJ P,EBPUR ; VALUE CELL + MOVE C,-2(TP) ; ATOM BACK + HLLZS (B) ; CLEAR LH + MOVSI 0,TLOCI + HLLM 0,(C) + MOVEM B,1(C) +PURAT3: HRRZ A,(C) ; GET OBLIST CODE + MOVE A,OBTBL2(A) + MOVEM A,2(C) ; STORE OBLIST SLOT + HLLZS (C) + JRST PURAT2 + +; A POSSIBLE MATCH ARRIVES HERE + +CHCKD: AOBJN D,NXTBCK ;SIZES DIFFER, JUMP + MOVE D,1(C) ;THEY MATCH!, GET EXISTING ATOM + MOVEI A,(D) ;GET TYPE OF IT + MOVE B,-2(TP) ;GET NEW ATOM + HLRZ 0,(B) + TRZ A,377777 ; SAVE ONLY 400000 BIT + TRZ 0,377777 + CAIN 0,(A) ; SKIP IF WIN + JRST IM.PUR + MOVSI 0,400000 + ANDCAM 0,(B) + ANDCAM 0,(D) + HLRZ A,(D) + CAIE A,TUNBOU ;UNBOUND? + JRST A1VAL ;YES, CONTINUE + MOVE A,(B) ;MOVE VALUE + MOVEM A,(D) + MOVE A,1(B) + MOVEM A,1(D) + MOVE B,D ;EXISTING ATOM TO B + MOVEI 0,(B) + CAIL 0,HIBOT + JRST .+3 + PUSHJ P,VALMAK ;MAKE A VALUE + JRST .+2 + PUSHJ P,PVALM + +;NOW FIND ATOMS OCCURENCE IN XFER VECTOR + +OFFIND: MOVE D,-4(TP) ;GET CURRENT POINTER INTO TP + MOVE C,TVP ;AND A COPY OF TVP + MOVEI A,0 ;INITIALIZE COUNTER +ALOOP: CAMN B,1(C) ;IS THIS IT? + JRST AFOUND + ADD C,[2,,2] ;BUMP COUNTER + CAMGE C,D ;HAVE WE HIT END + AOJA A,ALOOP ;NO, KEEP LOOKING + + MOVEI B,[ASCIZ /LOSSAGE--ATOM DISAPPEARED +/] +TYPIT: PUSHJ P,MSGTYP + .VALUE + +AFOUND: LSH A,1 ;FOUND ATOM, GET REAL OFFSET + ADDI A,1 + MOVE C,-6(TP) ;GET TV POINTER TO NEW ATOM + HRRZ B,(C) ;POINT TO REFERENCE + SKIPE B ;ANY THERE? + HRRM A,(B) ;YES, CLOBBER AWAY + SUB TP,[12,,12] + JRST SETLP1 ;AND GO ON + +A1VAL: HLRZ C,(B) ;GET VALUE'S TYPE + MOVE B,D ;NOW PUT EXISTING ATOM IN B + CAIN C,TUNBOU ;UNBOUND? + JRST OFFIND ;YES, WINNER + + MOVEI B,[ASCIZ /LOSSAGE--ATOM TRIES TO HAVE 2 VALUES +/] + JRST TYPIT + + +IM.PUR: MOVEI B,[ASCIZ /LOSSAG--ATOM TRIES TO BE BOTH PURE AND IMPURE +/] + JRST TYPIT + +PAGLOS: MOVEI B,[ASCIZ /LOSSAGE--IMPURE CORE EXTENDS INTO HIGH SEGMENT +/] + JRST TYPIT + +;MAKE A VALUE IN SLOT ON GLOBAL SP + +VALMAK: HLRZ A,(B) ;TYPE OF VALUE + CAIE A,400000+TUNBOU + CAIN A,TUNBOU ;VALUE? + POPJ P, ;NO, ALL DONE + MOVE A,GLOBSP+1(TVP) ;GET POINTER TO GLOBAL SP + SUB A,[4,,4] ;ALLOCATE SPACE + CAMG A,GLOBAS+1(TVP) ;CHECK FOR OVERFLOW + JRST SPOVFL + MOVEM A,GLOBSP+1(TVP) ;STORE IT BACK + MOVE C,(B) ;GET TYPE CELL + TLZ C,400000 + HLLZM C,2(A) ;INTO TYPE CELL + MOVE C,1(B) ;GET VALUE + MOVEM C,3(A) ;INTO VALUE SLOT + MOVSI C,TGATOM ;GET TATOM,,0 + MOVEM C,(A) + MOVEM B,1(A) ;AND POINTER TO ATOM + MOVSI C,TLOCI ;NOW CLOBBER THE ATOM + MOVEM C,(B) ;INTO TYPE CELL + ADD A,[2,,2] ;POINT TO VALUE + MOVEM A,1(B) + POPJ P, + +SPOVFL: MOVEI B,[ASCIZ /LOSSAGE--GLOBAL SP OVERFLOW +/] + JRST TYPIT + + +PVALM: HLRZ 0,(B) + CAIE 0,400000+TUNBOU + CAIN 0,TUNBOU + POPJ P, + MOVEI E,2 + PUSH P,B + PUSHJ P,EBPUR + POP P,C + MOVEM B,1(C) + MOVSI 0,TLOCI + MOVEM 0,(C) + MOVE B,C + POPJ P, + ;SET UP LIST OF INTERNAL NAMES AND ADDRESS NEEDED BY COMPILER + +VECTGO DUMMY1 + +IRP A,,[FINIS,SPECBIND,MESTBL,WNA,WRONGT,$TLOSE,CALER1 +ILOC,IGLOC,IDVAL,ILVAL,IGVAL,INTFLG,LCKINT,TYPLOO,TDEFER +IFALSE,UNAS,UNBOU,RCALL,SEGMNT,SEGLST,NUMPRI,DISXTR,SSPEC1,COMPERR +MAKACT,MAKENV,BFRAME,TTP,TTB,$TTP,$TTB,MAKTUP,TPALOC,IBIND,SSPECS +CILVAL,CISET,CIGVAL,CSETG,IBLOK1,IBLOCK,CLLOC,CGLOC,CASSQ,CGASSQ +CILNT,CILNQ,CILEGQ,CEMPTY,CIEQUA,CIREST,CINTH,CIAT,CSETLO,CIN +CIPUT,CIGET,CIGETL,CIMON,CISTRU,CIMEMQ,CIMEMB,CITOP,CIBACK,TYPSEG +CICONS,CIUVEC,CIVEC,IIFORM,IILIST,CISTNG,HITOP,INCR1,TYPG,VALG,TESTR +OTBSAV,CITYPE,CFRAME,CARGS,CFUNCT,CUTYPE,CPTYPE,CTYPEP,CTYPEQ,CCHUTY +CIREMA,RTFALS,CIGETP,CIGTPR,MPOPJ,TAB,$TAB,ICONS,CSTO,DSTO,NTPALO +CPLUS,CTIMES,CTIME,CDIVID,CMINUS,CLQ,CLEQ,CGQ,CGEQ,CLOG,CSIN,CCOS,CATAN,CSQRT +CFIX,CFLOAT,CEXP,CRAND,CINEQU,SPECBND,PGGIVE,PGFIND,MTYO,CMIN,CMAX,RCL,R1C,W1C +CALLTY,CTYPEC,CTYPEW,NOTTY,CHKAB,CTMPLT,IUNWIN,UNWIN2,NOSHUF,ROOT,ERROBL,INTOBL +CINSER,CIRMV,CLOOKU,CATOM,CIPNAM,ISTRCM,CITERP,CIPRIN,CIPRN1,CIPRNC +CPATM,CP1ATM,CPCATM,CPSTR,CP1STR,CPCSTR,CPCH,CREADC,CNXTCH,CREDC1,CNXTC1 +CGBOUN,IIGLOC,MAKTU2,CIFLTZ,CIUPRS] + .GLOBAL A + ADDSQU A + MAKAT [A]TFIX,A,MUDDLE,0 +TERMIN + +VECRET + +; ROUTINE TO SORT AND PURIFY SQUOZE TABLE + +SQSETU: MOVE A,[SQUTBL-SQULOC+2,,SQUTBL] + MOVEI 0,1 +SQ2: MOVE B,(A) + CAMG B,2(A) + JRST SQ1 + MOVEI 0,0 + EXCH B,2(A) + MOVEM B,(A) + MOVE B,1(A) + EXCH B,3(A) + MOVEM B,1(A) +SQ1: ADD A,[2,,2] + JUMPL A,SQ2 + JUMPE 0,SQSETU + MOVEI E,SQULOC-SQUTBL + MOVEI B,SQUTBL + PUSHJ P,EBPUR ; TO THE PURE WORLD + HRLI B,SQUTBL-SQULOC + MOVEM B,SQUPNT" + POPJ P, + +RHITOP: 0 + +OBSZ: 151. + 151. + 151. + 151. + 317. + +OBTBL2: ROOT+1 + ERROBL+1 + INTOBL+1 + MUDOBL+1 + INITIAL+1 + +OBTBL: INITIAL+1(TVP) + MUDOBL+1(TVP) + INTOBL+1(TVP) + ERROBL+1(TVP) + ROOT+1(TVP) +OBNAM: MQUOTE INITIAL + MQUOTE MUDDLE + MQUOTE INTERRUPTS + MQUOTE ERRORS + MQUOTE ROOT + +END SETUP + + + +TITLE INTERRUPT HANDLER FOR MUDDLE + +RELOCATABLE + +;C. REEVE APRIL 1971 + +.INSRT MUDDLE > + +SYSQ + +IF1,[ +IFE ITS,.INSRT MUDSYS;STENEX > +] + +PDLGRO==10000 ;AMOUNT TO GROW A PDL THAT LOSES +NINT==72. ;MAXIMUM NUMBER OF INTERRUPTS POSSIBLE + +IFN ITS,[ +;SET UP LOCATION 42 TO POINT TO TSINT + +RMT [ + +ZZZ==$. ;SAVE CURRENT LOCATION + +LOC 42 + + JSR MTSINT ;GO TO HANDLER + +LOC ZZZ +] +] + +; GLOBALS NEEDED BY INTERRUPT HANDLER + +.GLOBAL ONINT ; FUDGE INS EXECUTED IF NON ZERO AT START OF INTERRUPT +.GLOBA GCFLG ;TELLS WHETHER OR NOT GARBAGE COLLECTOR IS RUNNING +.GLOBAL GCFLCH ; FLUSH CHARS IMMEDIATE SO GC CAN SEE THEM +.GLOBAL CORTOP ; TOP OF CORE +.GLOBA GCINT ;TELLS GARBAGE COLLECTOR TO SIMULATE AN INTERRUPT +.GLOBAL INTNUM,INTVEC ;TV ENTRIES CONCERNING INTERRUPTS +.GLOBAL AGC ;CALL THE GARBAGE COLLECTOR +.GLOBAL VECNEW,PARNEW,GETNUM ;GC PSEUDO ARGS +.GLOBAL GCPDL ;GARBAGE COLLECTORS PDL +.GLOBAL VECTOP,VECBOT ;DELIMIT VECTOR SPACE +.GLOBAL PURTOP +.GLOBAL PDLBUF ;AMOUNT OF PDL GROWTH +.GLOBAL PGROW ;POINTS TO DOPE WORD OF NEXT PDL TO GROW +.GLOBAL TPGROW ;POINTS TO NEXT MUDDLE PDL TO GROW +.GLOBAL TOPLEV,ERROR%,N.CHNS,CHNL1 +.GLOBAL BUFRIN,CHNL0,SYSCHR ;CHANNEL GLOBALS +.GLOBAL IFALSE,TPOVFL,1STEPR,INTOBL,INCHAR,CURPRI,RDEVIC,RDIREC,GFALS,STATUS +.GLOBAL PSTAT,NOTRES,IOIN2,INAME,INTFCN,CHNCNT,CHANNO,GIBLOK,ICONS,INCONS +.GLOBAL IEVECT,INSRTX,ILOOKC,IPUT,IREMAS,IGET,CSTAK,EMERGE +.GLOBAL MTSINT ;BEGINNING OF INTERRUPT HANDLER +.GLOBAL INTINT ;CALLED BY INITIALIZER TO TAKE CARE OF INT PCS +.GLOBAL FRMSTK,APPLY,CHUNW +.GLOBAL IPCGOT,DIRQ ;HANDLE BRANCHING OFF TO IPC KLUDGERY + +; GLOBALS FOR GC +.GLOBAL GCTIM,GCCAUS,GCCALL + +; GLOBALS FOR MONITOR ROUTINES + +.GLOBAL MONCH,MONCH0,RMONCH,RMONC0,LOCQ,SMON,BAPT,APLQ,MAKACT,NAPT +.GLOBAL PURERR,BUFRIN,INSTAT + +MONITOR + +.GLOBAL MSGTYP,MTYI,UPLO,IFLUSH,OCLOS,ERRET,MASK1,MASK2 ;SUBROUTINES USED +.GLOBAL ERROR,LISTEN,ECHO,RRESET,MTYO,GCHAPN,P.CORE,P.TOP,QUEUES,NOTTY,TTYOP2,TTICHN +.GLOBAL INTHLD,BNDV,SPECBE +;BEGINNING OF ACTUAL INTERRUPT HANDLER (MUST BE IMPURE) + + +;***** TEMP FUDGE ******* + +QUEUES==INTVEC + + +; DECLARATIONS ASSOCIATED WITH INTERRUPT HANDERS AND HEADERS + +; SPECIAL TABLES + +SPECIN: IRP A,,[CHAR,CLOCK,MPV,ILOPR,WRITE,READ,IOC,PURE,SYSDOWN,INFERIOR,RUNT,REALT +PARITY] + MQUOTE A,[A]INTRUP + TERMIN +SPECLN==.-SPECIN + +; TABLE OF SPECIAL FINDING ROUTINES + +FNDTBL: IRP A,,[GETCHN,0,0,0,LOCGET,LOCGET,0,0,0,0,0,0,0] + A + TERMIN + +; TABLE OF SPECIAL SETUP ROUTINES + +INTBL: IRP A,,[S.CHAR,S.CLOK,S.MPV,S.ILOP,S.WMON,S.RMON,S.IOC,S.PURE,S.DOWN,S.INF +S.RUNT,S.REAL,S.PAR] + A + S!A==.IRPCNT + TERMIN + +IFN ITS,[ + +; EXTERNAL INTERRUPT TABLE + +EXTINT: REPEAT NINT-36.,0 + REPEAT 16.,HCHAR + 0 + 0 + REPEAT 8.,HINF + REPEAT NINT-62.,0 +EXTEND: + +IRP A,,[[HCLOCK,13.],[HMPV,14.],[HILOPR,6],[HIOC,9],[HPURE,26.],[HDOWN,7],[HREAL,35.] +[HRUNT,34.],[HPAR,28.]] + IRP B,C,[A] + LOC EXTINT+C + B + .ISTOP + TERMIN +TERMIN + + +LOC EXTEND +] + +IFE ITS,[ + +; TABLES FOR TENEX INTERRUPT SYSTEM + +LEVTAB: P1 ; POINTS TO INT PC HOLDERS FOR LEVS 1,2 AND 3 + P2 + P3 + +CHNMSK==0 ; WILL BE MASK WORD FOR INT SET UP +MFORK==400000 +NNETS==10. ; ALLOW 10 NETWRK INTERRUPTS +NETCHN==36.-NNETS + +CHNTAB: ; LOCATION OF INT ROUTINES FOR VARIOUS "CHANNELS" + BLOCK 36.-NNETS ; THERE AR 36. TENEX INT CHANNELS + +REPEAT NNETS, 1,,INTNET+3*.RPCNT + +IRP A,,[[0,CNTLG],[1,CNTLS],[9.,TNXPDL]] + IRP B,C,[A] + LOC CHNTAB+B + 1,,C + CHNMSK==CHNMSK+<1_<35.-B>> + .ISTOP + TERMIN +TERMIN +LOC CHNTAB+36. + +EXTINT: BLOCK NINT-NNETS + +REPEAT NNETS,HNET + +IRP A,,[[HCNTLG,36.],[HCNTLS,37.]] + IRP B,C,[A] + LOC EXTINT+C + B + .ISTOP + TERMIN +TERMIN +LOC EXTINT+NINT +] + + +; HANDLER/HEADER PARAMETERS + +; HEADER BLOCKS + +IHDRLN==4 ; LENGTH OF HEADER BLOCK + +INAME==0 ; NAME OF INTERRUPT +ISTATE==2 ; CURRENT STATE +IHNDLR==4 ; POINTS TO LIST OF HANDLERS +INTPRI==6 ; CONTAINS PRIORITY OF INTERRUPT + +IHANDL==4 ; LENGTH OF A HANDLER BLOCK + +INXT==0 ; POINTS TO NEXTIN CHAIN +IPREV==2 ; POINTS TO PREV IN CHAIN +INTFCN==4 ; FUNCTION ASSOCIATED WITH THIS HANDLER +INTPRO==6 ; PROCESS TO RUN INT IN + +IFN ITS,[ +RMT [ +IMPURE +TSINT: +MTSINT: 0 ;INTERRUPT BITS GET STORED HERE +TSINTR: 0 ;INTERRUPT PC WORD STORED HERE + JRST TSINTP ;GO TO PURE CODE + +; SOFTWARE INTERNAL INTERRUPTS JSR TO HERE + +LCKINT: 0 + JRST DOINT + +PURE +] +] +IFE ITS,[ +RMT [ +; JSR HERE FOR SOFTWARE INTERNAL INTERRUPTS + +LCKINT: 0 + JRST DOINT +] +] + + +IFN ITS,[ + +;THE REST OF THIS CODE IS PURE + +TSINTP: SOSGE INTFLG ; SKIP IF ENABLED + SETOM INTFLG ;DONT GET LESS THAN -1 + + MOVEM A,TSAVA ;SAVE TWO ACS + MOVEM B,TSAVB + MOVE A,TSINT ;PICK UP INT BIT PATTERN + JUMPL A,2NDWORD ;DONT CHECK FOR PDL OVERFLOW ETC. IF SIGN BIT ON + + TRZE A,200000 ;IS THIS A PDL OVERFLOW? + JRST IPDLOV ;YES, GO HANDLE IT FIRST + +IMPCH: MOVEI B,0 + TRNE A,20000 ;IS IT A MEMORY PROTECTION VIOLATION? + MOVEI B,1 ; FLAG SAME + + TRNE A,40 ;ILLEGAL OP CODE? + MOVEI B,2 ; ALSO FLAG + TRNN A,400 ; IOC? + JRST .+3 + SOS TSINTR + MOVEI B,3 + TLNE A,200 ; PURE? + MOVEI B,4 + SOJGE B,DO.NOW ; CANT WAIT AROUND + +;DECODE THE REST OF THE INTERRUPTS USING A TABLE + +2NDWORD: + JUMPL A,GC2 ;2ND WORD? + IORM A,PIRQ ;NO, INTO WORD 1 + JRST GCQUIT ;AND DISMISS INT + +GC2: TLZ A,400000 ;TURN OFF SIGN BIT + IORM A,PIRQ2 + TRNE A,177777 ;CHECK FOR CHANNELS + JRST CHNACT ;GO IF CHANNEL ACTIVITY +] +GCQUIT: SKIPGE INTFLG ;SKIP IF INTERRUPTS ENABLED + JRST INTDON ;NO, DEFER REAL HANDLING UNTIL LATER + + MOVE A,TSINTR ;PICKUP RETURN WORD +IFE ITS,[ + TLON A,10000 ; EXEC PC? + SUBI A,1 ; YES FIXUP PC +] + MOVEM A,LCKINT ;STORE ELSEWHERE + MOVEI A,DOINTE ;CAUSE DISMISS TO HANDLER + HRRM A,TSINTR ;STORE IN INT RETURN + PUSH P,INTFLG ;SAVE INT FLAG + SETOM INTFLG ;AND DISABLE + + +INTDON: MOVE A,TSAVA ;RESTORE ACS + MOVE B,TSAVB +IFN ITS, .DISMISS TSINTR ;AND DISMISS THE INTERRUPT +IFE ITS, DEBRK + + +DO.NOW: SKIPE GCFLG + JRST DLOSER ; HANDLE FATAL GC ERRORS + MOVSI B,1 + SKIPGE INTFLG ; IF NOT ENABLED + MOVEM B,INTFLG ; PRETEND IT IS + JRST 2NDWORD + +IFE ITS,[ + +; HERE FOR TENEX PDL OVER FLOW INTERRUPT + +TNXPDL: SOSGE INTFLG + SETOM INTFLG + MOVEM A,TSAVA + MOVEM B,TSAVB + JRST IPDLOV ; GO TO COMMON HANDLER + +; HERE FOR TENEX ^G AND ^S INTERRUPTS + +CNTLG: MOVEM A,TSAVA + MOVEI A,1 + JRST CNTSG + +CNTLS: MOVEM A,TSAVA + MOVEI A,2 + +CNTSG: MOVEM B,TSAVB + IORM A,PIRQ2 ; SAY FOR MUDDLE LEVEL + SOSGE INTFLG + SETOM INTFLG + JRST GCQUIT +INTNET: +REPEAT NNETS,[ + MOVEM A,TSAVA + MOVE A,[1_<.RPCNT+NETCHN>] + JRST CNTSG +] +] + +; HERE TO PROCESS INTERRUPTS + +DOINT: SKIPE INTHLD ; GLOBAL LOCK ON INTS + JRST @LCKINT + SETOM INTHLD ; DONT LET IT HAPPEN AGAIN + PUSH P,INTFLG +DOINTE: SKIPE ONINT ; ANY FUDGE? + XCT ONINT ; YEAH, TRY ONE + EXCH 0,LCKINT ; RELATIVIZE PC IF FROM RSUBR + PUSH P,0 ; AND SAVE + ANDI 0,-1 + CAMG 0,PURTOP + CAMGE 0,VECBOT + JRST DONREL + SUBI 0,(M) ; M IS BASE REG + HLL 0,(P) ; GET FLAGS + TLO 0,M ; INDEX IT OFF M + EXCH 0,(P) ; AND RESTORE TO STACK +DONREL: EXCH 0,LCKINT ; GET BACK SAVED 0 + SETZM INTFLG ;DISABLE + AOS -1(P) ;INCR SAVED FLAG + +;NOW SAVE WORKING ACS + + PUSHJ P,SAVACS + HLRZ A,-1(P) ; HACK FUNNYNESS FOR MPV/ILOPR + SKIPE A + SETZM -1(P) ; REALLY DISABLED + +DIRQ: MOVE A,PIRQ ;NOW SATRT PROCESSING + JFFO A,FIRQ ;COUNT BITS AND GO + MOVE A,PIRQ2 ;1ST DONE, LOOK AT 2ND + JFFO A,FIRQ2 + +INTDN1: SKIPN GCHAPN ; SKIP IF MUST DO GC INT + JRST .+3 + SETZM GCHAPN + PUSHJ P,INTOGC ; AND INTERRUPT + + PUSHJ P,RESTAC + +IFN ITS,[ + .SUSET [.SPICLR,,[0]] ; DISABLE INTS +] + POP P,LCKINT + POP P,INTFLG + SETZM INTHLD ; RE-ENABLE THE WORLD +IFN ITS,[ + EXCH 0,LCKINT + HRRI 0,@0 ; EFFECTIVIZE THE ADDRESS + TLZ 0,37 ; KILL IND AND INDEX + EXCH 0,LCKINT + .DISMIS LCKINT +] +IFE ITS, JRST @LCKINT +FIRQ: PUSHJ P,GETBIT ;SET UP THE BIT TO CLOBBER IN PIRQ + ANDCAM A,PIRQ ;CLOBBER IT + ADDI B,36. ;OFSET INTO TABLE + JRST XIRQ ;GO EXECUTE + +FIRQ2: PUSHJ P,GETBIT ;PREPARE TO CLOBBER BIT + ANDCAM A,PIRQ2 ;CLOBBER IT + ADDI B,71. ;AGAIN OFFSET INTO TABLE +XIRQ: + CAIE B,21 ;PDL OVERFLOW? + JRST FHAND ;YES, HACK APPROPRIATELY + +PDL2: SKIPN A,PGROW + SKIPE A,TPGROW + JRST .+2 + JRST DIRQ ; NOTHING GROWING, FALSE ALARM + MOVEI B,PDLGRO_-6 ;GET GROWTH SPEC + DPB B,[111100,,-1(A)] ;STORE GROWTH SPEC +REAGC: MOVE C,[10.,,1] ; INDICATOR FOR AGC + SKIPE PGROW ; P IS GROWING + ADDI C,6 + SKIPE TPGROW ; TP IS GROWING + ADDI C,1 + PUSHJ P,AGC ;COLLECT GARBAGE + SETZM PGROW + SETZM TPGROW + AOJL A,REAGC ; IF NO CORE, RETRY + JRST DIRQ + +SAVACS: +IRP A,,[0,A,B,C,D,E] + PUSH TP,A!STO(PVP) + SETZM A!STO(PVP) ;NOW ZERO TYPE + PUSH TP,A + TERMIN + POPJ P, + +RESTAC: +IRP A,,[E,D,C,B,A,0] + POP TP,A + POP TP,A!STO(PVP) + TERMIN + POPJ P, + +; HERE TO DO GC INTERRUPT AND CLOSE ANY DEAD CHANNELS + +INTOGC: PUSH P,[N.CHNS-1] + MOVE A,TVP + ADD A,[CHNL1,,CHNL1] + PUSH TP,$TVEC + PUSH TP,A + +INTGC1: MOVE A,(TP) ; GET POINTER + SKIPN B,1(A) ; ANY CHANNEL? + JRST INTGC2 + HRRE 0,(A) ; INDICATOR + JUMPGE 0,INTGC2 + PUSH TP,$TCHAN + PUSH TP,B + MCALL 1,FCLOSE + + MOVE A,(TP) + +INTGC2: HLLZS (A) + ADD A,[2,,2] + MOVEM A,(TP) + SOSE (P) + JRST INTGC1 + + SUB P,[1,,1] + SUB TP,[2,,2] + PUSH TP,$TCHSTR + PUSH TP,CHQUOTE GC + PUSH TP,$TFLOAT ; PUSH ON TIME ARGUMENT + PUSH TP,GCTIM + PUSH TP,$TFIX ; PUSH ON THE CAUSE ARGUMENT + PUSH TP,GCCAUS + PUSH TP,$TATOM ; PUSH ON THE CALL ARGUMENT + MOVE A,GCCALL + PUSH TP,@GCALLR(A) + MCALL 4,INTERR + POPJ P, + + +GCALLR: 0 + MQUOTE BLOAT + MQUOTE GROW + MQUOTE LIST + MQUOTE VECTOR + MQUOTE SET + MQUOTE SETG + MQUOTE FREEZE + MQUOTE PURE-PAGE-LOADER + MQUOTE GC + MQUOTE INTERRUPT-HANDLER + MQUOTE NEWTYPE + + ; OLD "ON" SETS UP EVENT AND HANDLER + +MFUNCTION ON,SUBR + + ENTRY + + HLRE 0,AB ; 0=> -2*NUM OF ARGS + ASH 0,-1 ; TO -NUM + CAME 0,[-5] + JRST .+3 + MOVEI B,10(AB) ; LAST MUST BE CHAN OR LOC + PUSHJ P,CHNORL + ADDI 0,3 + JUMPG 0,TFA ; AT LEAST 3 + MOVEI A,0 ; SET UP IN CASE NO PROC + AOJG 0,ONPROC ; JUMP IF NONE + GETYP C,6(AB) ; CHECK IT + CAIE C,TPVP + JRST TRYFIX + MOVE A,7(AB) ; GET IT +ONPROC: PUSH P,A ; SAVE AS A FLAG + GETYP A,(AB) ; CHECK PREV EXISTANCE + PUSH P,0 + CAIN A,TATOM + JRST .+3 + CAIE A,TCHSTR + JRST WTYP1 + MOVEI B,(AB) ; FIND IT + PUSHJ P,FNDINT + POP P,0 ; REST NUM OF ARGS + JUMPN B,ON3 ; ALREADY THERE + SKIPE C ; SKIP IF NOTHING TO FLUSH + SUB TP,[2,,2] + PUSH TP,(AB) ; GET NAME + PUSH TP,1(AB) + PUSH TP,4(AB) + PUSH TP,5(AB) + MOVEI A,2 ; # OF ARGS TO EVENT + AOJG 0,ON1 ; JUMP IF NO LAST ARG + PUSH TP,10(AB) + PUSH TP,11(AB) + ADDI A,1 +ON1: ACALL A,EVENT + +ON3: PUSH TP,A + PUSH TP,B + PUSH TP,2(AB) ; NOW FCN + PUSH TP,3(AB) + MOVEI A,3 ; NUM OF ARGS + SKIPN (P) + SOJA A,ON2 ; NO PROC + PUSH TP,$TPVP + PUSH TP,7(AB) +ON2: ACALL A,HANDLER + JRST FINIS + + +TRYFIX: SKIPN A,7(AB) + CAIE C,TFIX + JRST WRONGT + JRST ONPROC + +; ROUTINE TO BUILD AN EVENT + +MFUNCTION EVENT,SUBR + + ENTRY + + HLRZ 0,AB + CAIN 0,-2 ; IF JUST 1 + JRST RE.EVN ; COULD BE EVENT + CAIL 0,-3 ; MUST BE AT LEAST 2 ARGS + JRST TFA + GETYP A,2(AB) ; 2ND ARG MUST BE FIXED POINT PRIORITY + CAIE A,TFIX + JRST WTYP2 + GETYP A,(AB) ; FIRST ARG SHOULD BE CHSTR + CAIN A,TATOM ; ALLOW ACTUAL ATOM + JRST .+3 + CAIE A,TCHSTR + JRST WTYP1 + CAIL 0,-5 + JRST GOTRGS + CAIG 0,-7 + JRST TMA + MOVEI B,4(AB) + PUSHJ P,CHNORL ; CHANNEL OR LOCATIVE (PUT ON STACK) + +GOTRGS: MOVEI B,(AB) ; NOW TRY TO FIND HEADER FOR THIS INTERRUPT + PUSHJ P,FNDINT ; CALL INTERNAL HACKER + JUMPN B,FINIS ; ALREADY ONE OF THIS NAME + PUSH P,C + JUMPE C,.+3 ; GET IT OFF STACK + POP TP,B + POP TP,A + PUSHJ P,MAKINT ; MAKE ONE FOR ME + MOVSI 0,TFIX + MOVEM 0,INTPRI(B) ; SET UP PRIORITY + MOVE 0,3(AB) + MOVEM 0,INTPRI+1(B) +CH.SPC: POP P,C ; GET CODE BACK + SKIPGE C + PUSHJ P,DO.SPC ; DO ANY SPECIAL HACKS + JRST FINIS + +RE.EVN: GETYP 0,(AB) + CAIE 0,TINTH + JRST TFA ; ELSE SAY NOT ENOUGH + MOVE B,1(AB) ; GET IT + SETZM ISTATE+1(B) ; MAKE SURE ENABLED + SETZB D,C + GETYP A,INAME(B) ; CHECK FOR CHANNEL + CAIN A,TCHAN ; SKIP IF NOT + HRROI C,SS.CHA ; SET UP CHANNEL HACK + HRLZ E,INTPRI(B) ; GET POSSIBLE READ/WRITE BITS + TLNE E,.WRMON+.RDMON ; SKIP IF NOT MONITORS + PUSHJ P,GETNM1 + JUMPL C,RE.EV1 + MOVE B,INAME+1(B) ; CHECK FOR SPEC + PUSHJ P,SPEC1 + MOVE B,1(AB) ; RESTORE IHEADER +RE.EV1: PUSH TP,INAME(B) + PUSH TP,INAME+1(B) + PUSH P,C + MOVSI C,TATOM + PUSH TP,$TATOM + SKIPN D + MOVE D,MQUOTE INTERRUPT + PUSH TP,D + MOVE A,INAME(B) + MOVE B,INAME+1(B) ; GET IT + PUSHJ P,IGET ; LOOK FOR IT + JUMPN B,FINIS ; RETURN IT + MOVE A,(TB) + MOVE B,1(TB) + POP TP,D + POP TP,C + PUSH TP,(AB) + PUSH TP,1(AB) + PUSHJ P,IPUT ; REESTABLISH IT + MOVE A,(AB) + MOVE B,1(AB) + JRST CH.SPC + + +; FUNCTION TO GENERATE A HANDLER FOR A GIVEN INTERRUPT + +MFUNCTION HANDLER,SUBR + + ENTRY + + HLRZ 0,AB + CAIL 0,-2 ; MUST BE 2 OR MORE ARGS + JRST TFA + GETYP A,(AB) + CAIE A,TINTH ; EVENT? + JRST WTYP1 + GETYP A,2(AB) + CAIN 0,-4 ; IF EXACTLY 2 + CAIE A,THAND ; COULD BE HANDLER + JRST CHEVNT + + MOVE B,3(AB) ; GET IT + SKIPN IPREV+1(B) ; SKIP IF ALREADY IN USE + JRST HNDOK + MOVE D,1(AB) ; GET EVENT + SKIPN D,IHNDLR+1(D) ; GET FIRST HANDLER + JRST BADHND + CAMN D,B ; IS THIS IT? + JRST HFINIS ; YES, ALREADY "HANDLED" + MOVE D,INXT+1(D) ; GO TO NEXT HANDLER + JUMPN D,.-3 +BADHND: PUSH TP,$TATOM + PUSH TP,EQUOTE HANDLER-ALREADY-IN-USE + JRST CALER1 + +CHEVNT: CAIG 0,-7 ; SKIP IF LESS THAN 4 + JRST TMA + PUSH TP,$TPVP ; SLOT FOR PROCESS + PUSH TP,[0] + CAIE 0,-6 ; IF 3, LOOK FOR PROC + JRST NOPROC + GETYP 0,4(AB) + CAIE 0,TPVP + JRST WTYP3 + MOVE 0,5(AB) + MOVEM 0,(TP) + +NOPROC: PUSHJ P,APLQ + JRST NAPT + PUSHJ P,MHAND ; MAKE THE HANDLER + MOVE 0,1(TB) ; GET PROCESS + MOVEM 0,INTPRO+1(B) ; AND PUT IT INTO HANDLER + MOVSI 0,TPVP ; SET UP TYPE + MOVEM 0,INTPRO(B) + MOVE 0,2(AB) ; SET UP FUNCTION + MOVEM 0,INTFCN(B) + MOVE 0,3(AB) + MOVEM 0,INTFCN+1(B) + +HNDOK: MOVE D,1(AB) ; PICK UP EVEENT + MOVE E,IHNDLR+1(D) ; GET POINTER TO HANDLERS + MOVEM B,IHNDLR+1(D) ; PUT NEW ONE IN + MOVSI 0,TINTH ; GET INT HDR TYPE + MOVEM 0,IPREV(B) ; INTO BACK POINTER + MOVEM D,IPREV+1(B) ; AND POINTER ITSELF + MOVEM E,INXT+1(B) ; NOW NEXT POINTER + MOVSI 0,THAND ; NOW HANDLER TYPE + MOVEM 0,IHNDLR(D) ; SET TYPE IN HEADER + MOVEM 0,INXT(B) + JUMPE E,HFINIS ; JUMP IF HEADER WAS EMPTY + MOVEM 0,IPREV(E) ; FIX UP ITS PREV + MOVEM B,IPREV+1(E) +HFINIS: MOVSI A,THAND + JRST FINIS + + + +; FUNCTIONS TO SET TIME LIMITS FOR REALTIME AND RUNTIME INTS + +MFUNCTION RUNTIMER,SUBR + + ENTRY 1 + + GETYP 0,(AB) + JFCL 10,.+1 + MOVE A,1(AB) + CAIE 0,TFIX + JRST RUNT1 + IMUL A,[245761.] + JRST RUNT2 + +RUNT1: CAIE 0,TFLOAT + JRST WTYP1 + FMPR A,[245760.62] + MULI A,400 ; FIX IT + TSC A,A + ASH B,(A)-243 + MOVE A,B +RUNT2: JUMPL A,OUTRNG ; NOT FOR NEG # + JFCL 10,OUTRNG + .SUSET [.SRTMR,,A] + MOVE A,(AB) + MOVE B,1(AB) + JRST FINIS + +MFUNCTION REALTIMER,SUBR + + ENTRY 1 + + JFCL 10,.+1 + GETYP 0,(AB) + MOVE A,1(AB) + CAIE 0,TFIX + JRST REALT1 + IMULI A,60. ; TO 60THS OF SEC + JRST REALT2 + +REALT1: CAIE 0,TFLOAT + JRST WTYP1 + FMPRI A,(60.0) + MULI A,400 + TSC A,A + ASH B,(A)-243 + MOVE A,B + +REALT2: JUMPL A,OUTRNG + JFCL 10,OUTRNG + MOVE B,[200000,,A] + .REALT B, + JFCL + MOVE A,(AB) + MOVE B,1(AB) + JRST FINIS + +; FUNCTIONS TO ENABLE AND DISABLE INTERRUPTS + +MFUNCTION %ENABL,SUBR,ENABLE + + PUSHJ P,GTEVNT + SETZM ISTATE+1(B) + JRST FINIS + +MFUNCTION %DISABL,SUBR,DISABLE + + + PUSHJ P,GTEVNT + SETOM ISTATE+1(B) + JRST FINIS + +GTEVNT: ENTRY 1 + GETYP 0,(AB) + CAIE 0,TINTH + JRST WTYP1 + MOVE A,(AB) + MOVE B,1(AB) + POPJ P, + +DO.SPC: HRRZ C,INTBL(C) ; POINT TO SPECIAL CODE + HLRZ 0,AB ; - TWO TIMES NUM ARGS + PUSHJ P,(C) ; CALL ROUTINE + JUMPE E,CPOPJ ; NO BITS TO ENABLE, LEAVE +IFE ITS,[ + PUSH TP,A + PUSH TP,B + MOVE B,1(TB) ; CHANNEL + MOVE 0,CHANNO(B) + MOVEM 0,(E) ; SAVE IN TABLE + MOVEI E,(E) + SUBI E,NETJFN-NETCHN + MOVE A,0 ; SETUP FOR MTOPR + MOVEI B,24 + MOVSI C,(E) + TLO C,770000 ; DONT SETUP INR/INS + MTOPR + MOVEI 0,1 + MOVNS E + LSH 0,35.(E) + IORM 0,MASK1 + MOVE B,MASK1 + MOVEI A,MFORK + AIC + + POP TP,B + POP TP,A + POPJ P, ; ***** TEMP ****** +] +IFN ITS,[ + CAILE E,35. ; SKIP IF 1ST WORD BIT + JRST SETW2 + LSH 0,-1(E) + + IORM 0,MASK1 ; STORE IN PROTOTYPE MASK + .SUSET [.SMASK,,MASK1] + POPJ P, + +SETW2: LSH 0,-36.(E) + IORM 0,MASK2 ; SET UP PROTO MASK2 + .SUSET [.SMSK2,,MASK2] + POPJ P, +] + +; ROUTINE TO CHECK FOR CHANNEL OR LOCATIVE + +CHNORL: GETYP A,(B) ; GET TYPE + CAIN A,TCHAN ; IF CHANNEL + JRST CHNWIN + PUSH P,0 + PUSHJ P,LOCQ ; ELSE LOOCATIVE + JRST WRONGT + POP P,0 +CHNWIN: PUSH TP,(B) + PUSH TP,1(B) + POPJ P, + +; SUBROUTINE TO FIND A HANDLER OF A GIVEN NAME + +FNDINT: PUSHJ P,FNDNM + JUMPE B,CPOPJ + PUSHJ P,SPEC1 ; COULD BE FUNNY + +INTASO: PUSH P,C ; C<0 IF SPECIAL + PUSH TP,A + PUSH TP,B + MOVSI C,TATOM + SKIPN D ; COULD BE CHANGED FOR MONITOR + MOVE D,MQUOTE INTERRUPT + PUSH TP,C + PUSH TP,D + PUSHJ P,IGET + MOVE D,(TP) + SUB TP,[2,,2] + POP P,C ; AND RESTOR SPECIAL INDICATOR + SKIPE B ; IF FOUND + SUB TP,[2,,2] ; REMOVE CRUFT +CPOPJ: POPJ P, ; AND RETURN + +; CHECK FOR SPECIAL INTERNAL INTERRUPT HACK + +SPEC1: MOVSI C,-SPECLN ; BUILD AOBJN PNTR +SPCLOP: CAME B,@SPECIN(C) ; SKIP IF SPECIAL + AOBJN C,.-1 ; UNTIL EXHAUSTED + JUMPGE C,.+3 + SKIPE E,FNDTBL(C) + JRST (E) + MOVEI 0,-1(TB) ; SEE IF OK + CAIE 0,(TP) + JRST TMA + POPJ P, + +; ROUTINE TO CREATE A NEW INTERRUPT (INTERNAL ONLY--NOT ITS FLAVOR) + +MAKINT: JUMPN C,GOTATM ; ALREADY HAVE NAME, GET THING + MOVEI B,(AB) ; POINT TO STRING + PUSHJ P,CSTAK ; CHARS TO STAKC + MOVE B,INTOBL+1(TVP) + PUSHJ P,INSRTX + MOVE D,MQUOTE INTERRUPT +GOTATM: PUSH TP,$TINTH ; MAKE SLOT FOR HEADER BLOCK + PUSH TP,[0] + PUSH TP,A + PUSH TP,B ; SAVE ATOM + PUSH TP,$TATOM + PUSH TP,D + MOVEI A,IHDRLN*2 + PUSHJ P,GIBLOK + MOVE A,-3(TP) ; GET NAME AND STORE SAME + MOVEM A,INAME(B) + MOVE A,-2(TP) + MOVEM A,INAME+1(B) + SETZM ISTATE+1(B) + MOVEM B,-4(TP) ; STASH HEADER + POP TP,D + POP TP,C + EXCH B,(TP) + MOVSI A,TINTH + EXCH A,-1(TP) ; INTERNAL PUT CALL + PUSHJ P,IPUT + POP TP,B + POP TP,A + POPJ P, + +; FIND NAME OF INTERRUPT + +FNDNM: GETYP A,(B) ; TYPE + CAIE A,TCHSTR ; IF STRING + JRST FNDATM ; DONT HAVE ATOM, OTHERWISE DO + PUSHJ P,IILOOK + JRST .+2 +FNDATM: MOVE B,1(B) + SETZB C,D ; PREVENT LOSSAGE LATER + MOVSI A,TATOM + +; THE NEXT 2 INSTRUCTIONS ARE A KLUDGE TO GET THE RIGHT ERROR ATOM + + CAMN B,IMQUOTE ERROR + MOVE B,MQUOTE ERROR,ERROR,INTRUP + POPJ P, + +IILOOK: PUSHJ P,CSTAK ; PUT CHRS ON STACK + MOVE B,INTOBL+1(TVP) + JRST ILOOKC ; LOOK IT UP + +; ROUTINE TO MAKE A HANDLER BLOCK + +MHAND: MOVEI A,IHANDL*2 + JRST GIBLOK ; GET BLOCK + +; HERE TO GET CHANNEL FOR "CHAR" INTERRUPT + +GETCHN: GETYP 0,(TB) ; GET TYPE + CAIE 0,TCHAN ; CHANNL IS WINNER + JRST WRONGT + MOVE A,(TB) ; USE THE CHANNEL TO NAME THE INTERRUPT + MOVE B,1(TB) + SKIPN CHANNO(B) ; SKIP IF WINNING CHANNEL + JRST CBDCHN ; LOSER + POPJ P, + +LOCGET: GETYP 0,(TB) ; TYPE + CAIN 0,TCHAN ; SKIP IF LOCATIVE + JRST WRONGT + MOVE D,B + MOVE A,(TB) + MOVE B,1(TB) ; GET LOCATIVE + POPJ P, + +; FINAL MONITOR SETUP ROUTINES + +S.RMON: SKIPA E,[.RDMON,,] +S.WMON: MOVSI E,.WRMON + PUSH TP,A + PUSH TP,B + HLRM E,INTPRI(B) ; SAVE BITS + MOVEI B,(TB) ; POINT TO LOCATIVE + HRRZ A,FSAV(TB) + CAIN A,OFF + MOVSI D,(ANDCAM E,) ; KILL INST + CAIN A,EVENT + MOVSI D,(IORM E,) + PUSHJ P,SMON ; GO DO IT + POP TP,B + POP TP,A + MOVEI E,0 + POPJ P, + + +; SPECIAL SETUP ROUTINES FOR INITIAL INTERRUPTS + +IFN ITS,[ +S.CHAR: MOVE E,1(TB) ; GET CHANNEL + MOVE E,CHANNO(E) + ADDI E,36. ; GET CORRECT MASK BIT +ONEBIT: MOVEI 0,1 ; BIT FOR INT TO RET + POPJ P, +] +IFE ITS,[ +S.CHAR: MOVE E,1(TB) + MOVE 0,RDEVIC(E) + ILDB 0,0 ; 1ST CHAR + PUSH P,A + CAIE 0,"N ; NET ? + JRST S.CHA1 + + MOVEI A,0 + HRRZ 0,CHANNO(E) + MOVE E,[-NNETS,,NETJFN] + CAMN 0,(E) + JRST S.CHA2 + SKIPN (E) + MOVE A,E ; REMEMBER WHERE + AOBJN E,.-5 + TLNN A,-1 + FATAL NO MORE NETWORK + MOVE E,A +S.CHA1: MOVEI E,0 +S.CHA2: POP P,A + POPJ P, +] + + +; SPECIAL FOR CLOCK + +S.DOWN: SKIPA E,[7] +S.CLOK: MOVEI E,13. ; FOR NOW JUST GET BIT # + JRST ONEBIT + +S.PAR: MOVEI E,28. + JRST ONEBIT + +; RUNTIME AND REALTIME INTERRUPTS + +S.RUNT: SKIPA E,[34.] +S.REAL: MOVEI E,35. + JRST ONEBIT + +S.IOC: SKIPA E,[9.] ; IO CHANNEL ERROR +S.PURE: MOVEI E,26. + JRST ONEBIT + +; MPV AND ILOPR + +S.MPV: SKIPA E,[14.] ; BIT POS +S.ILOP: MOVEI E,6 + JRST ONEBIT + +; HERE TO TURN ALL INFERIOR INTS + +S.INF: MOVEI E,36.+16.+2 ; START OF BITS + MOVEI 0,37 ; 8 BITS WORTH + POPJ P, + + +; HERE TO HANDLE ITS INTERRUPTS + +FHAND: SKIPN D,EXTINT(B) ; SKIP IF HANDLERS ARE POSSIBLE + JRST DIRQ + JRST (D) + +IFN ITS,[ +; SPECIAL CHARACTER HANDLERS + +HCHAR: MOVEI D,CHNL0+1(TVP) + ADDI D,(B) ; POINT TO CHANNEL SLOT + ADDI D,(B) + SKIPN D,-72.(D) ; PICK UP CHANNEL + JRST IPCGOT ;WELL, IT GOTTA BEE THE THE IPC THEN + PUSH TP,$TCHAN + PUSH TP,D + LDB 0,[600,,STATUS(D)] ; GET DEVICE CODE + CAILE 0,2 ; SKIP IF A TTY + JRST HNET ; MAYBE NETWORK CHANNEL + CAMN D,TTICHN+1(TVP) + SKIPN NOTTY + JRST HCHR11 + MOVE B,D ; CHAN TO B + PUSHJ P,TTYOP2 ; RE-GOBBLE TTY + MOVE D,(TP) +HCHR11: MOVE D,CHANNO(D) ; GET ITS CHANNEL + PUSH P,D ; AND SAVE IT + .CALL HOWMNY ; GET # OF CHARS + MOVEI B,0 ; IF TTY GONE, NO CHARS +RECHR: ADDI B,1 ; BUMP BY ONE FOR SOSG + MOVEM B,CHNCNT(D) ; AND SAVE + IORM A,PIRQ2 ; LEAVE THE INT ON + +CHRLOO: MOVE D,(P) ; GET CHNNAEL NO. + SOSG CHNCNT(D) ; GET COUNT + JRST CHRDON + + MOVE B,(TP) + MOVE D,BUFRIN(B) ; GET EXTRA BUFFER + XCT IOIN2(D) ; READ CHAR + PUSH TP,$TCHSTR + PUSH TP,CHQUOTE CHAR + PUSH TP,$TCHRS ; SAVE CHAR FOR CALL + PUSH TP,A + PUSH TP,$TCHAN ; SAVE CHANNEL + PUSH TP,B + PUSHJ P,INCHAR ; PUT CHAR IN USERS BUFFER + MCALL 3,INTERRUPT ; RUN THE HANDLERS + JRST CHRLOO ; AND LOOP + +CHRDON: .CALL HOWMNY + MOVEI B,0 + MOVEI A,1 ; SET FOR PI WORD CLOBBER + LSH A,(D) + JUMPG B,RECHR ; ANY MORE? + ANDCAM A,PIRQ2 + SUB P,[1,,1] + SUB TP,[2,,2] + JRST DIRQ + + + +; HERE FOR NET CHANNEL INTERRUPT + +HNET: CAIE 0,26 ; NETWORK? + JRST HSTYET ; HANDLE PSEUDO TTY ETC. + PUSH TP,$TATOM + PUSH TP,MQUOTE CHAR,CHAR,INTRUP + PUSH TP,$TUVEC + PUSH TP,BUFRIN(D) + PUSH TP,$TCHAN + PUSH TP,D + MOVE B,D ; CHAN TO B + PUSHJ P,INSTAT ; UPDATE THE NETWRK STATE + MCALL 3,INTERRUPT + SUB TP,[2,,2] + JRST DIRQ + +HSTYET: PUSH TP,$TATOM + PUSH TP,MQUOTE CHAR,CHAR,INTRUP + PUSH TP,$TCHAN + PUSH TP,D + MCALL 2,INTERRUPT + SUB TP,[2,,2] + JRST DIRQ + +] +CBDCHN: PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-CHANNEL + JRST CALER1 + +IFN ITS,[ + +HCLOCK: PUSH TP,$TCHSTR + PUSH TP,CHQUOTE CLOCK + MCALL 1,INTERRUPT + JRST DIRQ + +HRUNT: PUSH TP,$TATOM + PUSH TP,MQUOTE RUNT,RUNT,INTRUP + MCALL 1,INTERRUPT + JRST DIRQ + +HREAL: PUSH TP,$TATOM + PUSH TP,MQUOTE REALT,REALT,INTRUP + MCALL 1,INTERRUPT + JRST DIRQ + +HPAR: MOVE A,MQUOTE PARITY,PARITY,INTRUP + JRST HMPV1 + +HMPV: MOVE A,MQUOTE MPV,MPV,INTRUP + JRST HMPV1 + +HILOPR: MOVE A,MQUOTE ILOPR,ILOPR,INTRUP + JRST HMPV1 + +HPURE: MOVE A,MQUOTE PURE,PURE,INTRUP +HMPV1: PUSH TP,$TATOM + PUSH TP,A + PUSH P,LCKINT ; SAVE LOCN + PUSH TP,$TATOM + PUSH TP,A + PUSH TP,$TWORD + PUSH TP,LCKINT + MCALL 2,EMERGENCY + POP P,A + MOVE C,(TP) + SUB TP,[2,,2] + JUMPN B,DIRQ + + PUSH TP,$TATOM + PUSH TP,EQUOTE DANGEROUS-INTERRUPT-NOT-HANDLED + PUSH TP,$TATOM + PUSH TP,C + PUSH TP,$TWORD + PUSH TP,A + MCALL 3,ERROR + JRST DIRQ + + + +; HERE TO HANDLE SYS DOWN INTERRUPT + +HDOWN: PUSH TP,$TATOM + PUSH TP,MQUOTE SYSDOWN,SYSDOWN,INTRUP + .DIETI A, ; HOW LONG? + PUSH TP,$TFIX + PUSH TP,A + PUSH P,A ; FOR MESSAGE + MCALL 2,INTERRUPT + POP P,A + JUMPN B,DIRQ + .SUSET [.RTTY,,B] ; DO WE NOW HAVE A TTY AT ALL? + JUMPL B,DIRQ ; DONT HANG AROUND + PUSH P,A + MOVEI B,[ASCIZ / +Excuse me, SYSTEM going down in /] + SKIPG (P) ; SKIP IF REALLY GOING DOWN + MOVEI B,[ASCIZ / +Excuse me, SYSTEM has been REVIVED! +/] + PUSHJ P,MSGTYP + POP P,B + JUMPE B,DIRQ + IDIVI B,30. ; TO SECONDS + IDIVI B,60. ; A/ SECONDS B/ MINUTES + JUMPE B,NOMIN + PUSH P,C + PUSHJ P,DECOUT + MOVEI B,[ASCIZ / minutes /] + PUSHJ P,MSGTYP + POP P,B + JRST .+2 +NOMIN: MOVEI B,(C) + PUSHJ P,DECOUT + MOVEI B,[ASCIZ / seconds. +/] + PUSHJ P,MSGTYP + JRST DIRQ + +; TWO DIGIT DEC OUT FROM B/ + +DECOUT: IDIVI B,10. + JUMPE B,DECOU1 ; NO TEN + MOVEI A,60(B) + PUSHJ P,MTYO +DECOU1: MOVEI A,60(C) + JRST MTYO + +; HERE TO HANDLE I/O CHANNEL ERRORS + +HIOC: .SUSET [.RAPRC,,A] ; CONTAINS CHANNEL OF MOST RECENT LOSSAGE + LDB A,[330400,,A] ; GET CHAN # + MOVEI C,(A) ; COPY + PUSH TP,$TATOM ; PUSH ERROR + PUSH TP,EQUOTE FILE-SYSTEM-ERROR + + PUSH TP,$TCHAN + ASH C,1 ; GET CHANNEL + ADDI C,CHNL0+1(TVP) ; GET CHANNEL VECTOR + PUSH TP,(C) + LSH A,23. ; DO A .STATUS + IOR A,[.STATUS A] + XCT A + PUSHJ P,GFALS ; GEN NAMED FALSE + PUSH TP,A + PUSH TP,B + PUSH TP,$TATOM + PUSH TP,MQUOTE IOC,IOC,INTRUP + + PUSH TP,A + PUSH TP,B + PUSH TP,-7(TP) + PUSH TP,-7(TP) + MCALL 3,EMERGENCY + JUMPN B,DIRQ1 ; JUMP IF HANDLED + MCALL 3,ERROR + JRST DIRQ + +DIRQ1: SUB TP,[6,,6] + JRST DIRQ + +; HANDLE INFERIOR KNOCKING AT THE DOOR + +HINF: SUBI B,36.+16.+2 ; CONVERT TO INF # + PUSH TP,$TATOM + PUSH TP,MQUOTE INFERIOR,INFERIOR,INTRUP + PUSH TP,$TFIX + PUSH TP,B + MCALL 2,INTERRUPT + JRST DIRQ +] +IFE ITS,[ + +; HERE FOR TENEX INTS (FIRST CUT) + +HCNTLG: MOVEI A,7 + JRST HCNGS + +HCNTLS: MOVEI A,23 + +HCNGS: PUSH TP,$TATOM + PUSH TP,MQUOTE CHAR,CHAR,INTRUP + PUSH TP,$TCHRS + PUSH TP,A + PUSH TP,$TCHAN + PUSH TP,TTICHN+1(TVP) + MCALL 3,INTERRUPT + JRST DIRQ + +HNET: MOVE A,NETJFN-NINT+NNETS(B) + JUMPE A,DIRQ + ASH A,1 + ADDI A,CHNL0+1(TVP) + MOVE B,(A) + PUSH TP,$TATOM + PUSH TP,MQUOTE CHAR,CHAR,INTRUP + PUSH TP,$TUVEC + PUSH TP,BUFRIN(B) + PUSH TP,$TCHAN + PUSH TP,B + PUSHJ P,INSTAT + MCALL 3,INTERRUPT + JRST DIRQ +] + + +MFUNCTION OFF,SUBR + ENTRY + + JUMPGE AB,TFA + HLRZ 0,AB + GETYP A,(AB) ; ARG TYPE + MOVE B,1(AB) ; AND VALUE + CAIN A,TINTH ; HEADER, GO HACK + JRST OFFHD ; QUEEN OF HEARTS + CAIN A,TATOM + JRST .+3 + CAIE A,TCHSTR + JRST TRYHAN ; MAYBE INDIVIDUAL HANDLER + CAIN 0,-2 ; MORE THAN 1 ARG? + JRST OFFAC1 ; NO, GO ON + CAIG 0,-5 ; CANT BE MORE THAN 2 + JRST TMA + MOVEI B,2(AB) ; POINT TO 2D + PUSHJ P,CHNORL +OFFAC1: MOVEI B,(AB) + PUSHJ P,FNDINT + JUMPGE B,NOHAN1 ; NOT HANDLED + +OFFH1: PUSH P,C ; SAVE C FOR BIT CLOBBER + MOVSI C,TATOM + SKIPN D + MOVE D,MQUOTE INTERRUPT + MOVE A,INAME(B) + MOVE B,INAME+1(B) + PUSHJ P,IREMAS + SKIPE B ; IF NO ASSOC, DONT SMASH + SETOM ISTATE+1(B) ; DISABLE IN CASE QUEUED + POP P,C ; SPECIAL? + JUMPGE C,FINIS ; NO, DONE + + HRRZ C,INTBL(C) ; POINT TO SPECIAL CODE + PUSHJ P,(C) ; GO TO SAME + JUMPE E,OFINIS ; DONE +IFN ITS,[ + CAILE E,35. ; SKIP IF 1ST WORD + JRST CLRW2 ; CLOBBER 2D WORD BIT + LSH 0,-1(E) ; POSITION BIT + ANDCAM 0,MASK1 ; KILL BIT + .SUSET [.SMASK,,MASK1] +] +IFE ITS,[ + MOVE D,B + SETZM (E) + MOVEI E,(E) + SUBI E,NETJFN-NETCHN + MOVEI 0,1 + MOVNS E + LSH 0,35.(E) + ANDCAM 0,MASK1 + MOVEI A,MFORK + SETCM B,MASK1 + DIC + ANDCAM 0,PIRQ ; JUST IN CASE + MOVE B,D +] +OFINIS: MOVSI A,TINTH + JRST FINIS + +IFN ITS,[ +CLRW2: LSH 0,-36.(E) ; POS BIT FOR 2D WORD + ANDCAM 0,MASK2 + .SUSET [.SMSK2,,MASK2] + JRST OFINIS +] + +TRYHAN: CAIE A,THAND ; HANDLER? + JRST WTYP1 + CAIE 0,-2 + JRST TMA + GETYP 0,IPREV(B) ; GET TYPE OF PREV + MOVE A,INXT+1(B) + MOVE C,IPREV+1(B) + MOVE D,IPREV(B) + CAIE 0,THAND + JRST DOHEAD ; PREV HUST BE HDR + MOVEM A,INXT+1(C) + JRST .+2 +DOHEAD: MOVEM A,IHNDLR+1(C) ; INTO HDR + JUMPE A,OFFINI + MOVEM D,IPREV(A) + MOVEM C,IPREV+1(A) +OFFINI: SETZM IPREV+1(B) + SETZM INXT+1(B) + MOVSI A,THAND + JRST FINIS + +OFFHD: CAIE 0,-2 + JRST TMA + PUSHJ P,GETNMS ; GET INFOR ABOUT INT + JUMPE C,OFFH1 + PUSH TP,INAME(B) + PUSH TP,INAME+1(B) + JRST OFFH1 + +GETNMS: GETYP A,INAME(B) ; CHECK FOR SPECIAL + SETZB C,D + CAIN A,TCHAN + HRROI C,SS.CHA + PUSHJ P,LOCQ ; LOCATIVE? + JRST CHGTNM + + MOVEI B,INAME(B) ; POINT TO LOCATIVE + MOVSI D,(MOVE E,) + PUSHJ P,SMON ; GET MONITOR + MOVE B,1(AB) +GETNM1: HRROI C,SS.WMO ; ASSUME WRITE + TLNN E,.WRMON + HRROI C,SS.RMO + MOVE D,MQUOTE WRITE,WRITE,INTRUP + TLNN E,.WRMON + MOVE D,MQUOTE READ,READ,INTRUP + POPJ P, + +CHGTNM: JUMPL C,CPOPJ + MOVE B,INAME+1(B) + PUSHJ P,SPEC1 + MOVE B,1(AB) ; RESTORE IHEADER + POPJ P, + +; EMERGENCY, CANT DEFER ME!! + +MQUOTE INTERRUPT + +EMERGENCY: + PUSH P,. + JRST INTERR+1 + +MFUNCTION INTERRUPT,SUBR + + PUSH P,[0] + + ENTRY + + SETZM INTHLD ; RE-ENABLE THE WORLD + JUMPGE AB,TFA + MOVE B,1(AB) ; GET HANDLER/NAME + GETYP A,(AB) ; CAN BE HEADER OR NAME + CAIN A,TINTH ; SKIP IF NOT HEADER + JRST GTHEAD + CAIN A,TATOM + JRST .+3 + CAIE A,TCHSTR ; SKIP IF CHAR STRING + JRST WTYP1 + MOVEI B,(AB) ; LOOK UP NAME + PUSHJ P,FNDNM ; GET NAME + JUMPE B,IFALSE + MOVEI D,0 + CAMN B,MQUOTE CHAR,CHAR,INTRUP + PUSHJ P,CHNGT1 + CAME B,MQUOTE READ,READ,INTRUP + CAMN B,MQUOTE WRITE,WRITE,INTRUP + PUSHJ P,GTLOC1 + PUSHJ P,INTASO + JUMPE B,IFALSE + +GTHEAD: SKIPE ISTATE+1(B) ; ENABLED? + JRST IFALSE ; IGNORE COMPLETELY + MOVE A,INTPRI+1(B) ; GET PRIORITY OF INTERRUPT + CAMLE A,CURPRI ; SEE IF MUST QUEU + JRST SETPRI ; MAY RUN NOW + SKIPE (P) ; SKIP IF DEFER OK + JRST DEFERR + MOVEM A,(P) + PUSH TP,$TINTH ; SAVE HEADER + PUSH TP,B + MOVEI A,1 ; SAVE OTHER ARGS +PSHARG: ADD AB,[2,,2] + JUMPGE AB,QUEU1 ; GO MAKE QUEU ENTRY + PUSH TP,(AB) + PUSH TP,1(AB) + AOJA A,PSHARG +QUEU1: PUSHJ P,IEVECT ; GET VECTOR + PUSH TP,$TVEC + PUSH TP,[0] ; WILL HOLD QUEUE HEADER + PUSH TP,A + PUSH TP,B + + POP P,A ; RESTORE PRIORITY + + MOVE B,QUEUES+1(TVP) ; GET INTERRUPT QUEUES + MOVEI D,0 + JUMPGE B,GQUEU ; MAKE A QUEUE HDR + +NXTQU: CAMN A,1(B) ; GOT PRIORITY? + JRST ADDQU ; YES, ADD TO THE QUEU + CAMG A,1(B) ; SKIP IF SPOT NOT FOUND + JRST GQUEU + MOVE D,B + MOVE B,3(B) ; GO TO NXT QUEUE + JUMPL B,NXTQU + +GQUEU: PUSH TP,$TVEC ; SAVE NEXT POINTER + PUSH TP,D + PUSH TP,$TFIX + PUSH TP,A ; SAVE PRIORITY + PUSH TP,$TVEC + PUSH TP,B + PUSH TP,$TLIST + PUSH TP,[0] + PUSH TP,$TLIST + PUSH TP,[0] + MOVEI A,4 + PUSHJ P,IEVECT + MOVE D,(TP) ; NOW SPLICE + SUB TP,[2,,2] + JUMPN D,GQUEU1 + MOVEM B,QUEUES+1(TVP) + JRST .+2 +GQUEU1: MOVEM B,3(D) + +ADDQU: MOVEM B,-2(TP) ; SAVE QUEU HDR + POP TP,D + POP TP,C + PUSHJ P,INCONS ; CONS IT + MOVE C,(TP) ;GET QUEUE HEADER + SKIPE D,7(C) ; IF END EXISTS + HRRM B,(D) ; SPLICE + MOVEM B,7(C) + SKIPN 5(C) ; SKIP IF START EXISTS + MOVEM B,5(C) + +IFINI: MOVSI A,TATOM + MOVE B,MQUOTE T + JRST FINIS + +SETPRI: EXCH A,CURPRI + MOVEM A,(P) + + PUSH TP,$TAB ; PASS AB TO HANDLERS + PUSH TP,AB + + PUSHJ P,RUNINT ; RUN THE HANDLERS + POP P,A ; UNQUEU ANY WAITERS + PUSHJ P,UNQUEU + + JRST IFINI + +; HERE TO UNQUEUE WAITING INTERRUPTS + +UNQUEU: PUSH P,A ; SAVE NEW LEVEL + +UNQUE1: MOVE A,(P) ; TARGET LEVEL + CAMLE A,CURPRI ; CHECK RUG NOT PULLED OUT + JRST UNDONE + SKIPE B,QUEUES+1(TVP) + CAML A,1(B) ; RIGHT LEVEL? + JRST UNDONE ; FINISHED + + SKIPN C,5(B) ; ON QUEUEU? + JRST UNXQ + HRRZ D,(C) ; CDR THE LIST + MOVEM D,5(B) + SKIPN D ; SKIP IF NOT LAST + SETZM 7(B) ; CLOBBER END POINTER + MOVE A,1(B) ; GET THIS PRIORITY LEVEL + MOVEM A,CURPRI ; MAKE IT THE CURRENT ONE + MOVE D,1(C) ; GET SAVED VECTOR OF INF + + MOVE B,1(D) ; INT HEADER + PUSH TP,$TVEC + PUSH TP,D ; AND ARGS + + PUSHJ P,RUNINT ; RUN THEM + JRST UNQUE1 + +UNDONE: POP P,CURPRI ; SET CURRENT LEVEL + MOVE A,CURPRI + POPJ P, + +UNXQ: MOVE B,3(B) ; GO TO NEXT QUEUE + MOVEM B,QUEUES+1(TVP) + JRST UNQUE1 + + + +; SUBR TO CHANGE INTERRUPT LEVEL + +MFUNCTION INTLEV,SUBR,[INT-LEVEL] + ENTRY + JUMPGE AB,RETLEV ; JUST RETURN CURRENT + GETYP A,(AB) + CAIE A,TFIX + JRST WTYP1 ; LEVEL IS FIXED + SKIPGE A,1(AB) + JRST OUTRNG" + CAMN A,CURPRI ; DIFFERENT? + JRST RETLEV ; NO RETURN + PUSH P,CURPRI + CAMG A,CURPRI ; SKIP IF NO UNQUEUE NEEDED + PUSHJ P,UNQUEU + MOVEM A,CURPRI ; SAVE + POP P,A + SKIPA B,A +RETLEV: MOVE B,CURPRI + MOVSI A,TFIX + JRST FINIS + +RUNINT: PUSH TP,$THAND ; SAVE HANDLERS LIST + PUSH TP,IHNDLR+1(B) + + SKIPN ISTATE+1(B) ; SKIP IF DISABLED + SKIPN B,(TP) + JRST SUBTP4 +NXHND: MOVEM B,(TP) ; SAVE CURRENT HDR + MOVE A,-2(TP) ; SAVE ARG POINTER + PUSHJ P,CHSWAP ; SEE IF MUST SWAP + PUSH TP,[0] + PUSH TP,[0] + MOVEI C,1 ; COUNT ARGS + PUSH TP,$TSP + PUSH TP,SP + MOVE D,PVP + ADD D,[1STEPR,,1STEPR] + PUSH TP,BNDV + PUSH TP,D + PUSH TP,$TPVP + PUSH TP,[0] + MOVE E,TP + PUSH TP,INTFCN(B) + PUSH TP,INTFCN+1(B) + ADD A,[2,,2] + JUMPGE A,DO.HND + PUSH TP,(A) + PUSH TP,1(A) + AOJA C,.-4 +DO.HND: PUSH P,C + PUSHJ P,SPECBE ; BIND 1 STEP FLAG + POP P,C + ACALL C,INTAPL + MOVE SP,-4(TP) + MOVE C,(TP) ; RESET 1 STEP + MOVEM C,1STEPR+1(PVP) + SUB TP,[6,,6] + PUSHJ P,CHUNSW + CAMN E,PVP + SUB TP,[4,,4] ; NO PROCESS CHANGE, POP JUNK + CAMN E,PVP + JRST .+4 + MOVE D,TPSTO+1(E) + SUB D,[4,,4] + MOVEM D,TPSTO+1(E) ; FIXUP HIS STACK +DO.H1: GETYP A,A ; CHECK FOR A DISMISS + CAIN A,TDISMI + JRST SUBTP4 + MOVE B,(TP) ; TRY FOR NEXT HANDLER + SKIPE B,INXT+1(B) + JRST NXHND +SUBTP4: SUB TP,[4,,4] + POPJ P, + +MFUNCTION INTAPL,SUBR,[RUNINT] + JRST APPLY + + +NOHAND: JUMPE C,NOHAN1 + PUSH TP,$TATOM + PUSH TP,EQUOTE INTERNAL-INTERRUPT +NOHAN1: PUSH TP,(AB) + PUSH TP,1(AB) + PUSH TP,$TATOM + PUSH TP,EQUOTE NOT-HANDLED + SKIPE A,C + MOVEI A,1 + ADDI A,2 + JRST CALER + +DEFERR: PUSH TP,$TATOM + PUSH TP,EQUOTE ATTEMPT-TO-DEFER-UNDEFERABLE-INTERRUPT + PUSH TP,$TINTH + PUSH TP,B + PUSH TP,$TATOM + PUSH TP,MQUOTE INTERRUPT + MCALL 3,RERR ; FORCE REAL ERROR + JRST FINIS + +; FUNCTION TO DISMISS AN INTERRUPT TO AN ARBITRARY ACTIVATION + +MFUNCTION DISMISS,SUBR + + HLRZ 0,AB + JUMPGE AB,TFA + CAIGE 0,-6 + JRST TMA + MOVNI D,1 + CAIE 0,-6 + JRST DISMI3 + GETYP 0,4(AB) + CAIE 0,TFIX + JRST WTYP + SKIPGE D,5(AB) + JRST OUTRNG + +DISMI3: MOVEI A,(TB) + +DISMI0: HRRZ B,FSAV(A) + HRRZ C,PCSAV(A) + CAIE B,INTAPL + JRST DISMI1 + + MOVE E,OTBSAV(A) + MOVEI 0,(A) ; SAVE FRAME + MOVEI A,DISMI2 + HRRM A,PCSAV(E) ; GET IT BACK HERE + MOVE A,(AB) + MOVE B,1(AB) + MOVE C,TPSAV(E) + MOVEM A,-7(C) + MOVEM B,-6(C) + MOVEI C,0 + CAMGE AB,[-3,,] + MOVEI C,2(AB) + MOVE B,0 ; DEST FRAME + JUMPL D,.+3 + MOVE A,PSAV(E) ; NOW MUNG SAVED INT LEVEL + MOVEM D,-1(A) ; ZAP YOUR MUNGED + PUSHJ P,CHUNW ; CHECK ON UNWINDERS + JRST FINIS ; FALL DOWN + +DISMI1: MOVEI E,(A) + HRRZ A,OTBSAV(A) + JUMPN A,DISMI0 + + MOVE A,(AB) + MOVE B,1(AB) + + PUSH TP,A + PUSH TP,B + SKIPGE A,D + JRST .+4 + CAMG A,CURPRI + PUSHJ P,UNQUEU + MOVEM A,CURPRI + CAML AB,[-3,,] + JRST .+5 + PUSH TP,2(AB) + PUSH TP,3(AB) + MCALL 2,ERRET + JRST FINIS + + POP TP,B + POP TP,A + JRST FINIS + +DISMI2: MOVE C,(TP) + MOVEM C,1STEPR+1(PVP) + MOVE SP,-4(TP) + SUB TP,[6,,6] + PUSHJ P,CHUNSW ; UNDO ANY PROCESS HACKING + MOVE C,TP + CAME E,PVP ; SWAPED? + MOVE C,TPSTO+1(E) + MOVE D,-1(C) + MOVE 0,(C) + SUB TP,[4,,4] + SUB C,[4,,4] ; MAYBE FIXUP OTHER STACK + CAME E,PVP + MOVEM C,TPSTO+1(E) + PUSH TP,D + PUSH TP,0 + PUSH TP,A + PUSH TP,B + MOVE A,-1(P) ; SAVED PRIORITY + CAMG A,CURPRI + PUSHJ P,UNQUEU + MOVEM A,CURPRI + SKIPN -1(TP) + JRST .+3 + MCALL 2,ERRET + JRST FINIS + + SUB TP,[4,,4] + MOVSI A,TDISMI + MOVE B,MQUOTE T + JRST DO.H1 + +CHNGT1: HLRE B,AB + SUBM AB,B + GETYP 0,-2(B) + CAIE 0,TCHAN + JRST WTYP3 + MOVE B,-1(B) + MOVSI A,TCHAN + POPJ P, + +GTLOC1: GETYP A,2(AB) + PUSHJ P,LOCQ + JRST WTYP2 + MOVE D,B ; RET ATOM FOR ASSOC + MOVE A,2(AB) + MOVE B,3(AB) + POPJ P, + ; MONITOR CHECKERS + +MONCH0: HLLZ 0,(B) ; POTENTIAL MONITORS +MONCH: TLZ 0,TYPMSK ; KILL TYPE + IOR C,0 ; IN NEW TYPE + PUSH P,0 + MOVEI 0,(B) + CAIL 0,HIBOT + JRST PURERR + POP P,0 + TLNN 0,.WRMON ; SKIP IF WRITE MONIT + POPJ P, + +; MONITOR IS ON, INVOKE HANDLER + + PUSH TP,A ; SAVE OBJ + PUSH TP,B + PUSH TP,C + PUSH TP,D ; SAVE DATUM + MOVSI C,TATOM ; PREPARE TO FIND IT + MOVE D,MQUOTE WRITE,WRITE,INTRUP + PUSHJ P,IGET + JUMPE B,MONCH1 ; NOT FOUND IGNORE FOR NOW + PUSH TP,A ; START SETTING UP CALL + PUSH TP,B + PUSH TP,-5(TP) + PUSH TP,-5(TP) + PUSH TP,-5(TP) + PUSH TP,-5(TP) + PUSHJ P,FRMSTK ; PUT FRAME ON STAKC + MCALL 4,EMERGE ; DO IT +MONCH1: POP TP,D + POP TP,C + POP TP,B + POP TP,A + HLLZ 0,(B) ; UPDATE MONITORS + TLZ 0,TYPMSK + IOR C,0 + POPJ P, + +; NOW FOR READ MONITORS + +RMONC0: HLLZ 0,(B) +RMONCH: TLNN 0,.RDMON + POPJ P, + PUSH TP,A + PUSH TP,B + MOVSI C,TATOM + MOVE D,MQUOTE READ,READ,INTRUP + PUSHJ P,IGET + JUMPE B,RMONC1 + PUSH TP,A + PUSH TP,B + PUSH TP,-3(TP) + PUSH TP,-3(TP) + PUSHJ P,FRMSTK ; PUT FRAME ON STACK + MCALL 3,EMERGE +RMONC1: POP TP,B + POP TP,A + POPJ P, + +; PUT THE CURRENT FRAME ON THE STACK + +FRMSTK: PUSHJ P,MAKACT + HRLI A,TFRAME + PUSH TP,A + PUSH TP,B + POPJ P, + +; HERE TO COMPLAIN ABOUT ATTEMPTS TO MUNG PURE CODE + +PURERR: PUSH TP,$TATOM + PUSH TP,EQUOTE ATTEMPT-TO-MUNG-PURE-STRUCTURE + PUSH TP,A + PUSH TP,B + MOVEI A,2 + JRST CALER + +; PROCESS SWAPPING CODE + +CHSWAP: MOVE E,PVP ; GET CURRENT + POP P,0 + SKIPE D,INTPRO+1(B) ; SKIP IF NO PROCESS GIVEN + CAMN D,PVP ; SKIP IF DIFFERENT + JRST PSHPRO + + PUSHJ P,SWAPIT ; DO SWAP + +PSHPRO: PUSH TP,$TPVP + PUSH TP,E + JRST @0 + +CHUNSW: MOVE E,PVP ; RET OLD PROC + MOVE D,-2(TP) ; GET SAVED PROC + CAMN D,PVP ; SWAPPED? + POPJ P, + +SWAPIT: PUSH P,0 + MOVE 0,PSTAT+1(D) ; CHECK STATE + CAIE 0,RESMBL + JRST NOTRES + MOVEM 0,PSTAT+1(PVP) + MOVEI 0,RUNING + MOVEM 0,PSTAT+1(D) ; SAVE NEW STATE + POP P,0 + POP P,C + JRST SWAP" + + +;SUBROUTINE TO GET BIT FOR CLOBBERAGE + +GETBIT: MOVNS B ;NEGATE + MOVSI A,400000 ;GET THE BIT + LSH A,(B) ;SHIFT TO POSITION + POPJ P, ;AND RETURN + +;HERE TO HANDLE PDL OVERFLOW. ASK FOR A GC + +IPDLOV: +IFN ITS,[ + MOVEM A,TSINT ;SAVE INT WORD +] + + SKIPE GCFLG ;IS GC RUNNING? + JRST GCPLOV ;YES, COMPLAIN GROSSLY + + MOVEI A,200000 ;GET BIT TO CLOBBER + IORM A,PIRQ ;LEAVE A MESSAGE FOR HIGHER LEVEL + + EXCH P,GCPDL ;GET A WINNING PDL + HRRZ B,TSINTR ;GET POINTER TO LOSING INSTRUCTION + SKIPG GCPDL ; SKIP IF NOT P + LDB B,[270400,,-1(B)] ;GET AC FIELD + SKIPL GCPDL ; SKIP IF P + MOVEI B,P + MOVEI A,(B) ;COPY IT + LSH A,1 ;TIMES 2 + ADDI A,0STO(PVP) ;POINT TO THIS ACS CURRENT TYPE + HLRZ A,(A) ;GET THAT TYPE INTO A + CAIN B,P ;IS IT P + MOVEI B,GCPDL ;POINT TO SAVED P + + CAIN B,B ;OR IS IT B ITSELF + MOVEI B,TSAVB + CAIN B,A ;OR A + MOVEI B,TSAVA + + CAIN B,C ;OR C + MOVEI B,1(P) ;C WILL BE ON THE STACK + + PUSH P,C + PUSH P,A + + MOVE A,(B) ;GET THE LOSING POINTER + MOVEI C,(A) ;AND ISOLATE RH + + CAMG C,VECTOP ;CHECK IF IN GC SPACE + CAMG C,VECBOT + JRST NOGROW ;NO, COMPLAIN + +; FALL THROUGH + + + HLRZ C,A ;GET -LENGTH + SUBI A,-1(C) ;POINT TO A DOPE WORD + POP P,C ;RESTORE TYPE INTO C + PUSH P,D ; SAVE FOR GROWTH HACKER + MOVEI D,0 + CAIN C,TPDL ; POIN TD TO APPROPRIATE DOPE WORD + MOVEI D,PGROW + CAIN C,TTP + MOVEI D,TPGROW + JUMPE D,BADPDL ; IF D STILL 0, THIS PDL IS WEIRD + MOVEI A,PDLBUF(A) ; POINT TO ALLEGED REAL DOPE WORD + SKIPN (D) ; SKIP IF PREVIOUSLY BLOWN + MOVEM A,(D) ; CLOBBER IN + CAME A,(D) ; MAKE SURE IT IS THE SAME + JRST PDLOSS + POP P,D ; RESTORE D + + +PNTRHK: MOVE C,(B) ;RESTORE PDL POINTER + SUB C,[PDLBUF,,0] ;FUDGE THE POINTER + MOVEM C,(B) ;AND STORE IT + + POP P,C ;RESTORE THE WORLD + EXCH P,GCPDL ;GET BACK ORIG PDL +IFN ITS,[ + MOVE A,TSINT ;RESTORE INT WORD + + JRST IMPCH ;LOOK FOR MORE INTERRUPTS +] +IFE ITS, JRST GCQUIT + +TPOVFL: SETOM INTFLG ;SIMULATE PDL OVFL + PUSH P,A + MOVEI A,200000 ;TURN ON THE BIT + IORM A,PIRQ + SUB TP,[PDLBUF,,0] ;HACK STACK POINTER + HLRE A,TP ;FIND DOPEW + SUBM TP,A ;POINT TO DOPE WORD + MOVEI A,1(A) ; ZERO LH AND POINT TO DOPEWD + SKIPN TPGROW + HRRZM A,TPGROW + CAME A,TPGROW ; MAKE SURE WINNAGE + JRST PDLOSS + POP P,A + POPJ P, + + +; GROW CORE IF PDL OVERFLOW DURING GC + +GCPLOV: MOVE A,P.TOP ; GET TOP OF IMPURE + ASH A,-10. ; TO BLOCKS + EXCH P,GCPDL ; NEED A PDL TO CALL P.CORE + ADDI A,1 ; GO TO NEXT BLOCK +GRECOR: PUSHJ P,P.CORE ; GET CORE + JRST SLPCOR ; HANG GETTING THE CORE + EXCH P,GCPDL ; BPDLS BACK + ADD P,[-2000,,0] +IFE ITS, JRST GCQUIT +IFN ITS,[ + MOVE A,TSINT + JRST IMPCH + + +SLPCOR: MOVEI B,1 + .SLEEP B, + JRST GRECOR + +] + +IFN ITS,[ + +;HERE TO HANDLE LOW-LEVEL CHANNELS + + +CHNACT: SKIPN GCFLG ;GET A WINNING PDL + EXCH P,GCPDL + ANDI A,177777 ;ISOLATE CHANNEL BITS + PUSH P,0 ;SAVE + +CHNA1: MOVEI B,0 ;BIT COUNTER + JFFO A,.+2 ;COUNT + JRST CHNA2 + SUBI B,35. ;NOW HAVE CHANNEL + MOVMS B ;PLUS IT + MOVEI 0,1 + LSH 0,(B) + ANDCM A,0 + MOVEI 0,(B) ; COPY TO 0 + LSH 0,23. ;POSITION FOR A .STATUS + IOR 0,[.STATUS 0] + XCT 0 ;DO IT + ANDI 0,77 ;ISOLATE DEVICE + CAILE 0,2 + JRST CHNA1 + +PMIN4: MOVE 0,B ; CHAN TO 0 + .ITYIC 0, ; INTO 0 + JRST .+2 ; DONE, GO ON + JRST PMIN4 + SETZM GCFLCH ; LEAVE GC MODE + JRST CHNA1 + +CHNA2: POP P,0 + SKIPN GCFLG + EXCH P,GCPDL + JRST GCQUIT + +HOWMNY: SETZ + SIXBIT /LISTEN/ + D + 402000,,B +] + +MFUNCTION GASCII,SUBR,ASCII + ENTRY 1 + + GETYP A,(AB) + CAIE A,TCHRS + JRST TRYNUM + + MOVE B,1(AB) + MOVSI A,TFIX + JRST FINIS + +TRYNUM: CAIE A,TFIX + JRST WTYP1 + SKIPGE B,1(AB) ;GET NUMBER + JRST TOOBIG + CAILE B,177 ;CHECK RANGE + JRST TOOBIG + MOVSI A,TCHRS + JRST FINIS + +TOOBIG: PUSH TP,$TATOM + PUSH TP,EQUOTE ARGUMENT-OUT-OF-RANGE + JRST CALER1 + + +;HERE IF PDL OVERFLOW DURING GARBAGE COLLECTION + +BADPDL: FATAL NON PDL OVERFLOW + +NOGROW: FATAL PDL OVERFLOW ON NON EXPANDABLE PDL + +PDLOSS: FATAL PDL OVEFLOW BUFFER EXHAUSTED + +DLOSER: PUSH P,LOSRS(B) + MOVE A,TSAVA + MOVE B,TSAVB + POPJ P, + +LOSRS: IMPV + ILOPR + IOC + IPURE + + +;MEMORY PROTECTION INTERRUPT + +IOC: FATAL IO CHANNEL ERROR IN GARBAGE COLLECTOR +IMPV: FATAL MPV IN GARBAGE COLLECTOR + +IPURE: FATAL PURE WRITE IN GARBAGE COLLECTOR +ILOPR: FATAL ILLEGAL OPEREATION IN GARBAGE COLLECTOR + +IFN ITS,[ + +;SUBROUTINE TO BE CALLED AT INITIALIZE TIME TO SETUP INTS + +INTINT: SETZM CHNCNT + MOVE A,[CHNCNT,,CHNCNT+1] + BLT A,CHNCNT+16. + SETZM INTFLG + .SUSET [.SPICLR,,[-1]] + MOVE A,MASK1 ;SET MASKS + MOVE B,MASK2 + .SETM2 A, ;SET BOTH MASKS + MOVSI A,TVEC + MOVEM A,QUEUES(TVP) + SETZM QUEUES+1(TVP) ;UNQUEUE ANY OLD INTERRUPTS + SETZM CURPRI + POPJ P, +] +IFE ITS,[ + +; INITIALIZE TENEX INTERRUPT SYSTEM + +INTINT: CIS ; CLEAR THE INT WORLD + SETZM INTFLG ; IN CASE RESTART + MOVSI A,TVEC ; FIXUP QUEUES + MOVEM A,QUEUES(TVP) + SETZM QUEUES+1(TVP) + SETZM CURPRI ; AND PRIORITY LEVEL + MOVEI A,MFORK ; TURN ON MY INTERRUPTS + MOVE B,[LEVTAB,,CHNTAB] ; POINT TO TABLES + SIR ; TELL SYSTEM ABOUT THEM + MOVE B,MASK1 ; SET UP FOR INT BITS + AIC ; TURN THEM ON + MOVSI A,7 ; CNTL G AND CHANNEL 0 + ATI ; ACTIVATE IT + MOVE A,[23,,1] ; CNTL S AND CHANNEL 1 + ATI ; ACTIVATE IT + MOVEI A,MFORK ; DO THE ENABLE + EIR + POPJ P, +] + + +; CNTL-G HANDLER + +MFUNCTION QUITTER,SUBR + + ENTRY 2 + GETYP A,(AB) + CAIE A,TCHRS + JRST WTYP1 + GETYP A,2(AB) + CAIE A,TCHAN + JRST WTYP2 + MOVE B,1(AB) + MOVE A,(AB) + CAIN B,^S ; HANDLE CNTL-S + JRST RETLIS + CAIE B,7 + JRST FINIS + + PUSHJ P,CLEAN ; CLEAN UP I/O CHANNELS + PUSH TP,$TATOM + PUSH TP,EQUOTE CONTROL-G? + MCALL 1,ERROR + JRST FINIS + +RETLIS: MOVEI D,(TB) ; FIND A LISTEN OR ERROR TO RET TO + +RETLI1: HRRZ A,OTBSAV(D) + HRRZ C,FSAV(A) ; CHECK FUNCTION + CAIE C,LISTEN + CAIN C,ERROR ; FOUND? + JRST FNDHIM ; YES, GO TO SAME + CAIN C,ERROR% ; FUNNY ERROR + JRST FNDHIM + CAIN C,TOPLEV ; NO ERROR/LISTEN + JRST FINIS + MOVEI D,(A) + JRST RETLI1 + +FNDHIM: PUSH TP,$TTB + PUSH TP,D + PUSHJ P,CLEAN + MOVE B,(TP) ; NEW FRAME + SUB TP,[2,,2] + MOVEI C,0 + PUSHJ P,CHUNW ; UNWIND? + MOVSI A,TATOM + MOVE B,MQUOTE T + JRST FINIS + +CLEAN: MOVE B,3(AB) ; GET IN CHAN + PUSHJ P,RRESET + MOVE B,3(AB) ; CHANNEL BAKC + MOVE C,BUFRIN(B) + SKIPN C,ECHO(C) ; GET ECHO + JRST CLUNQ +IFN ITS,[ + MOVEI A,2 + CAMN C,[PUSHJ P,MTYO] + JRST TYONUM + LDB A,[270400,,C] +TYONUM: LSH A,23. + IOR A,[.RESET] + XCT A +] +IFE ITS,[ + MOVEI A,101 ; OUTPUT JFN + CFOBF +] + +CLUNQ: SETZB A,CURPRI + JRST UNQUEU + + +IMPURE +ONINT: 0 ; INT FUDGER +IFN ITS,[ +;RANDOM IMPURE CRUFT NEEDED +CHNCNT: BLOCK 16. ; # OF CHARS IN EACH CHANNEL + +TSAVA: 0 +TSAVB: 0 +PIRQ: 0 ;HOLDS REQUEST BITS FOR 1ST WORD +PIRQ2: 0 ;SAME FOR WORD 2 +PCOFF: 0 +MASK1: 1200,,220540 ;FIRST MASK +MASK2: 0 ;SECOND THEREOF +CURPRI: 0 ; CURRENT PRIORITY +] +IFE ITS,[ +NETJFN: BLOCK NNETS +MASK1: CHNMSK +TSINTR: +P1: 0 ; PC INT LEVEL 1 +P2: 0 ; PC INT LEVEL 2 +P3: 0 ; PC INT LEVEL 3 +CURPRI: 0 +TSAVA: 0 +TSAVB: 0 +PIRQ: 0 +PIRQ2: 0 +] +PURE + +END + TITLE MAIN LOOP AND GLOBALLY REFERENCED SUBROUTINES + +RELOCA + +.GLOBAL PATCH,TBINIT,PIDSTO,PROCID,PTIME,GCPDL,PBASE,TYPTOP,RERR,FRMSTK,EMERGE +.GLOBAL PAT,PDLBUF,INTINT,START,SWAP,ICR,SPBASE,TPBASE,TPBAS,SAT,CURPRI,CHFINI +.GLOBAL TOPLEVEL,INTOBL,INITIA,ERROBL,MAINPR,RESFUN,STATUS,TYPVEC,ROOT,TTICHN,TTOCHN +.GLOBAL TTYOPE,MOPEN,MCLOSE,MIOT,ILVAL,MESS,ERROR,CHFRM,IGVAL,TYPBOT,ASOVEC +.GLOBAL PRINT,PRIN1,PRINC,MUDSTR,VECBOT,CSTACK,IFALSE,TYPLOO,RCALL,SWAPIN,CTMPLT +.GLOBAL IDPROC,CHFSWP,ILOC,MAKACT,BNDV,SPECSTORE,BINDID,IGLOC,MTYO,MSGTYP,CAFRE1 +.GLOBAL EVATYP,EVTYPE,APLTYP,APTYPE,PRNTYP,PRTYPE,AGC,SGSNAM,NAPT,APLQ,STRTO6 +.GLOBAL 6TOCHS,TYPFND,STBL,CHNL0,N.CHNS,CLOSAL,%LOGOUT,%SSNAM,%RSNAM,%KILLM +.GLOBAL MAKINF,%VALRET,COMPERR,IPUT,IGET,TMATCH,INITIZ,IPCINI,%UNAM,%JNAM,%RUNAM,%RJNAM +.GLOBAL NOTTY,PATEND,CFRAME,CARGS,CFUNCT,CITYPE,CTYPEQ,CPTYPE,CTYPEP,CUTYPE,CCHUTY +.GLOBAL RTFALS,PGINT,PURCLN,CTYPEC,CTYPEW,IDVAL1,CALLTY,MESSAG,INITFL,WHOAMI +.GLOBAL %SLEEP,%HANG,%TOPLQ,ONINT,CHUNW,CURFCN,BUFRIN,TD.LNT,TD.GET,TD.PUT,MPOPJ +.GLOBAL PURVEC,PLOAD,SSPECS,OUTRNG +.GLOBAL TYPIC +.INSRT MUDDLE > + +MONITS==1 ; SET TO 1 IF PC DEMON WANTED +.VECT.==1 ; BIT TO INDICATE VECTORS FOR GCHACK + +;MAIN LOOP AND STARTUP + +START: MOVEI 0,0 ; SET NO HACKS + MOVEM 0,WHOAMI ; HACK FOR TS FOO linked to TS MUDDLE + MOVE PVP,MAINPR ; MAKE SURE WE START IN THE MAIN PROCESS + JUMPE 0,INITIZ ; MIGHT BE RESTART + MOVE P,PSTO+1(PVP) ; SET UP FOR BOOTSTRAP HACK + MOVE TP,TPSTO+1(PVP) +INITIZ: SKIPN P ; IF NO CURRENT P + MOVE P,PSTO+1(PVP) ; PDL TO GET OFF THE GROUND + SKIPN TP ; SAME FOR TP + MOVE TP,TPSTO+1(PVP) ; GET A TP TO WORK WITH + MOVE TVP,TVPSTO+1(PVP) ; GET A TVP + SETZB R,M ; RESET RSUBR AC'S + PUSHJ P,%RUNAM + PUSHJ P,%RJNAM + PUSHJ P,TTYOPE ;OPEN THE TTY + MOVEI B,MUDSTR + SKIPE WHOAMI ; SKIP IF THIS IS MUDDLE + JRST .+3 ; ELSE NO MESSAGE + SKIPN NOTTY ; IF NO TTY, IGNORE + PUSHJ P,MSGTYP ;TYPE OUT TO USER + + XCT MESSAG ;MAYBE PRINT A MESSAGE + PUSHJ P,INTINT ;INITIALIZE INTERRUPT HANDLER + XCT IPCINI + PUSHJ P,PURCLN ; CLEAN UP PURE SHARED AREA +RESTART: ;RESTART A PROCESS +STP: MOVEI C,0 + MOVE B,TBINIT+1(PVP) ;POINT INTO STACK AT START + PUSHJ P,CHUNW ; LEAVE WHILE DOING UNWIND CHECK + MOVEI E,TOPLEV + MOVEI A,TFALSE ; IN CASE FALLS OFF PROCESS + MOVEI B,0 + MOVEM E,-1(TB) + JRST CONTIN + + MQUOTE TOPLEVEL +TOPLEVEL: + MCALL 0,LISTEN + JRST TOPLEVEL + + +MFUNCTION LISTEN,SUBR + + ENTRY + PUSH P,[0] ;FLAG: DON'T PRINT ERROR MSG + JRST ER1 + +; USER SUPPLIED ERROR HANDLER, TEMPORARY KLUDGE + IMQUOTE ERROR + +ERROR: MOVE B,IMQUOTE ERROR + PUSHJ P,IGVAL ; GET VALUE + GETYP C,A + CAIN C,TSUBR ; CHECK FOR NO CHANGE + CAIE B,RERR1 ; SKIP IF NOT CHANGED + JRST .+2 + JRST RERR1 ; GO TO THE DEFAULT + PUSH TP,A ; SAVE VALUE + PUSH TP,B + MOVE C,AB ; SAVE AB + MOVEI D,1 ; AND COUNTER +USER1: PUSH TP,(C) ; PUSH THEM + PUSH TP,1(C) + ADD C,[2,,2] ; BUMP + ADDI D,1 + JUMPL C,USER1 + ACALL D,APPLY ; EVAL USERS ERROR + JRST FINIS + + +TPSUBR==TSUBR+400000 + +MFUNCTION ERROR%,PSUBR,ERROR + +RMT [EXPUNGE TPSUBR +] +RERR1: ENTRY + PUSH TP,$TATOM + PUSH TP,MQUOTE ERROR,ERROR,INTRUP + PUSHJ P,FRMSTK ; PUT ERROR'S FRAME ON STACK + MOVEI D,2 + MOVE C,AB +RERR2: JUMPGE C,RERR22 + PUSH TP,(C) + PUSH TP,1(C) + ADD C,[2,,2] + AOJA D,RERR2 +RERR22: ACALL D,EMERGENCY + JRST RERR + +IMQUOTE ERROR +RERR: ENTRY + PUSH P,[-1] ;PRINT ERROR FLAG + +ER1: MOVE B,IMQUOTE INCHAN + PUSHJ P,ILVAL ; CHECK INPUT CHANNEL IS SOME KIND OF TTY + GETYP A,A + CAIE A,TCHAN ; SKIP IF IT IS A CHANNEL + JRST ER2 ; NO, MUST REBIND + CAMN B,TTICHN+1(TVP) + JRST NOTINC +ER2: MOVE B,IMQUOTE INCHAN + MOVEI C,TTICHN(TVP) ; POINT TO VALU + PUSHJ P,PUSH6 ; PUSH THE BINDING + MOVE B,TTICHN+1(TVP) ; GET IN CHAN +NOTINC: SKIPE NOTTY + JRST NOECHO + PUSH TP,$TCHAN + PUSH TP,B + PUSH TP,$TATOM + PUSH TP,MQUOTE T + MCALL 2,TTYECH ; ECHO INPUT +NOECHO: MOVE B,IMQUOTE OUTCHAN + PUSHJ P,ILVAL ; GET THE VALUE + GETYP A,A + CAIE A,TCHAN ; SKIP IF OK CHANNEL + JRST ER3 ; NOT CHANNEL, MUST REBIND + CAMN B,TTOCHN+1(TVP) + JRST NOTOUT +ER3: MOVE B,IMQUOTE OUTCHAN + MOVEI C,TTOCHN(TVP) + PUSHJ P,PUSH6 ; PUSH THE BINDINGS +NOTOUT: MOVE B,IMQUOTE OBLIST + PUSHJ P,ILVAL ; GET THE VALUE OF OBLIST + PUSHJ P,OBCHK ; IS IT A WINNER ? + SKIPA A,$TATOM ; NO, SKIP AND CONTINUE + JRST NOTOBL ; YES, DO NOT DO REBINDING + MOVE B,IMQUOTE OBLIST + PUSHJ P,IGLOC + GETYP 0,A + CAIN 0,TUNBOU + JRST MAKOB ; NO GLOBAL OBLIST, MAKE ONE + MOVEI C,(B) ; COPY ADDRESS + MOVE A,(C) ; GET THE GVAL + MOVE B,(C)+1 + PUSHJ P,OBCHK ; IS IT A WINNER ? + JRST MAKOB ; NO, GO MAKE A NEW ONE + MOVE B,IMQUOTE OBLIST + PUSHJ P,PUSH6 + +NOTOBL: PUSH TP,[TATOM,,-1] ;FOR BINDING + PUSH TP,IMQUOTE LER,[LERR ]INTRUP + PUSHJ P,MAKACT + HRLI A,TFRAME ; CORRCT TYPE + PUSH TP,A + PUSH TP,B + PUSH TP,[0] + PUSH TP,[0] + MOVE A,PVP ; GET PROCESS + ADD A,[PROCID,,PROCID] ; POINT TO ID (ALSO LEVEL) + PUSH TP,BNDV + PUSH TP,A + MOVE A,PROCID(PVP) + ADDI A,1 ; BUMP ERROR LEVEL + PUSH TP,A + PUSH TP,PROCID+1(PVP) + PUSH P,A + + MOVE B,IMQUOTE READ-TABLE + PUSHJ P,IGVAL + PUSH TP,[TATOM,,-1] + PUSH TP,IMQUOTE READ-TABLE + GETYP C,A ; TO GVAL OF READ-TABLE ON ERROR AND + CAIE C,TVEC ; TOP ERRET'S + JRST .+4 + PUSH TP,A + PUSH TP,B + JRST .+3 + PUSH TP,$TUNBOUND + PUSH TP,[-1] + PUSH TP,[0] + PUSH TP,[0] + + PUSHJ P,SPECBIND ;BIND THE CRETANS + MOVE A,-1(P) ;RESTORE SWITHC + JUMPE A,NOERR ;IF 0, DONT PRINT ERROR MESS + PUSH TP,$TATOM + PUSH TP,EQUOTE *ERROR* + MCALL 0,TERPRI + MCALL 1,PRINC ;PRINT THE MESSAGE +NOERR: MOVE C,AB ;GET A COPY OF AB + +ERRLP: JUMPGE C,LEVPRT ;IF NONE, RE-ENTER READ-EVAL-PRINT LOOP + PUSH TP,$TAB + PUSH TP,C + MOVEI B,PRIN1 + GETYP A,(C) ; GET ARGS TYPE + CAIE A,TATOM + JRST ERROK + MOVE A,1(C) ; GET ATOM + MOVE A,2(A) + CAIE A,ERROBL+1 + CAMN A,ERROBL+1(TVP) ; DONT SKIP IF IN ERROR OBLIST + MOVEI B,PRINC ; DONT PRINT TRAILER +ERROK: PUSH P,B ; SAVE ROUTINE POINTER + PUSH TP,(C) + PUSH TP,1(C) + MCALL 0,TERPRI ; CRLF + POP P,B ; GET ROUTINE BACK + .MCALL 1,(B) + POP TP,C + SUB TP,[1,,1] + ADD C,[2,,2] ;BUMP SAVED AB + JRST ERRLP ;AND CONTINUE + + +LEVPRT: XCT INITFL ;LOAD MUDDLE INIT FILE IF FIRST TIME + MCALL 0,TERPRI + PUSH TP,$TATOM + PUSH TP,EQUOTE [LISTENING-AT-LEVEL ] + MCALL 1,PRINC ;PRINT LEVEL + PUSH TP,$TFIX ;READY TO PRINT LEVEL + HRRZ A,(P) ;GET LEVEL + SUB P,[2,,2] ;AND POP STACK + PUSH TP,A + MCALL 1,PRIN1 ;PRINT WITHOUT SPACES ETC. + PUSH TP,$TATOM ;NOW PROCESS + PUSH TP,EQUOTE [ PROCESS ] + MCALL 1,PRINC ;DONT SLASHIFY SPACES + PUSH TP,PROCID(PVP) ;NOW ID + PUSH TP,PROCID+1(PVP) + MCALL 1,PRIN1 + SKIPN C,CURPRI + JRST MAINLP + PUSH TP,$TFIX + PUSH TP,C + PUSH TP,$TATOM + PUSH TP,EQUOTE [ INT-LEVEL ] + MCALL 1,PRINC + MCALL 1,PRIN1 + JRST MAINLP ; FALL INTO MAIN LOOP + + ;ROUTINES FOR ERROR-LISTEN + +OBCHK: GETYP 0,A + CAIN 0,TOBLS + JRST CPOPJ1 ; WIN FOR SINGLE OBLIST + CAIE 0,TLIST ; IF LIST, MAKE SURE EACH IS AN OBLIST + JRST CPOPJ ; ELSE, LOSE + + JUMPE B,CPOPJ ; NIL ,LOSE + PUSH TP,A + PUSH TP,B + PUSH P,[0] ;FLAG FOR DEFAULT CHECKING + MOVEI 0,1000 ; VERY BIG NUMBER FOR CIRCULARITY TEST + +OBCHK0: INTGO + SOJE 0,OBLOSE ; CIRCULARITY TEST + HRRZ B,(TP) ; GET LIST POINTER + GETYP A,(B) + CAIE A,TOBLS ; SKIP IF WINNER + JRST DEFCHK ; CHECK FOR SPECIAL ATOM DEFAULT + HRRZ B,(B) + MOVEM B,(TP) + JUMPN B,OBCHK0 +OBWIN: AOS (P)-1 +OBLOSE: SUB TP,[2,,2] + SUB P,[1,,1] + POPJ P, + +DEFCHK: SKIPN (P) ; BEEN HERE BEFORE ? + CAIE A,TATOM ; OR, NOT AN ATOM ? + JRST OBLOSE ; YES, LOSE + MOVE A,(B)+1 + CAME A,MQUOTE DEFAULT + JRST OBLOSE ; LOSE + SETOM (P) ; SET FLAG + HRRZ B,(B) ; CHECK FOR END OF LIST + MOVEM B,(TP) + JUMPN B,OBCHK0 ; NOT THE END, CONTINUE LOOKING + JRST OBLOSE ; LOSE FOR DEFAULT AT THE END + + + +PUSH6: PUSH TP,[TATOM,,-1] + PUSH TP,B + PUSH TP,(C) + PUSH TP,1(C) + PUSH TP,[0] + PUSH TP,[0] + POPJ P, + + +MAKOB: PUSH TP,INITIAL(TVP) + PUSH TP,INITIAL+1(TVP) + PUSH TP,ROOT(TVP) + PUSH TP,ROOT+1(TVP) + MCALL 2,LIST + PUSH TP,$TATOM + PUSH TP,IMQUOTE OBLIST + PUSH TP,A + PUSH TP,B + MCALL 2,SETG + PUSH TP,[TATOM,,-1] + PUSH TP,IMQUOTE OBLIST + PUSH TP,A + PUSH TP,B + PUSH TP,[0] + PUSH TP,[0] + JRST NOTOBL + + +;THIS IS IT FOLKS...THE MAIN LOOP. READ, EVAL, PRINT + +MAINLP: MOVE A,$TATOM ;KLUDGE BY NDR LIKE ERROR TO LET LOOSER REDEFINE + MOVE B,MQUOTE REP + PUSHJ P,ILVAL ;GET ITS LVAL TO SEE IF REDEFINED + GETYP C,A + CAIE C,TUNBOUND + JRST REPCHK + MOVE A,$TATOM ;SEE IF IT HAS GVAL SINCE NO LVAL + MOVE B,MQUOTE REP + PUSHJ P,IGVAL + GETYP C,A + CAIN C,TUNBOUN + JRST IREPER +REPCHK: CAIN C,TSUBR + CAIE B,REPER + JRST .+2 + JRST IREPER +REREPE: PUSH TP,A + PUSH TP,B + GETYP A,-1(TP) + PUSHJ P,APLQ + JRST ERRREP + MCALL 1,APPLY ;LOOSER HAS REDEFINED SO CALL HIS + JRST MAINLP +IREPER: PUSH P,[0] ;INDICATE FALL THROUGH + JRST REPERF + +ERRREP: PUSH TP,[TATOM,,-1] + PUSH TP,MQUOTE REP + PUSH TP,$TSUBR + PUSH TP,[REPER] + PUSH TP,[0] + PUSH TP,[0] + PUSHJ P,SPECBIN + PUSH TP,$TATOM + PUSH TP,EQUOTE NON-APPLICABLE-REP + PUSH TP,-11(TP) + PUSH TP,-11(TP) + MCALL 2,ERROR + SUB TP,[6,,6] + PUSHJ P,SSPECS + JRST REREPE + + +MFUNCTION REPER,SUBR,REP +REPER: ENTRY 0 + PUSH P,[1] ;INDICATE DIRECT CALL +REPERF: MCALL 0,TERPRI + MCALL 0,READ + PUSH TP,A + PUSH TP,B + MCALL 0,TERPRI + MCALL 1,EVAL + PUSH TP,$TATOM + PUSH TP,IMQUOTE LAST-OUT + PUSH TP,A + PUSH TP,B + MCALL 2,SET + PUSH TP,A + PUSH TP,B + MCALL 1,PRIN1 + POP P,C ;FLAG FOR FALL THROUGH OR CALL + JUMPN C,FINIS ;IN CASE LOOSER CALLED REP + JRST MAINLP + + +;FUNCTION TO RETRY A PREVIOUS FUNCTION CALL + +MFUNCTION RETRY,SUBR + + ENTRY + JUMPGE AB,RETRY1 ; USE MOST RECENT + CAMGE AB,[-2,,0] + JRST TMA + GETYP A,(AB) ; CHECK TYPE + CAIE A,TFRAME + JRST WTYP1 + MOVEI B,(AB) ; POINT TO ARG + JRST RETRY2 +RETRY1: MOVE B,IMQUOTE LER,[LERR ]INTRUP + PUSHJ P,ILOC ; LOCATIVE TO FRAME +RETRY2: PUSHJ P,CHFSWP ; CHECK VALIDITY AND SWAP IF NECESSARY + HRRZ 0,OTBSAV(B) ; CHECK FOR TOP + JUMPE 0,RESTAR ; YES RE-ENTER TOP LEVEL + PUSH TP,$TTB + PUSH TP,B ; SAVE FRAME + MOVE B,OTBSAV(B) ; GET PRVIOUS FOR UNBIND HACK + MOVEI C,-1(TP) + PUSHJ P,CHUNW ; CHECK ANY UNWINDING + CAME SP,SPSAV(TB) ; UNBINDING NEEDED? + PUSHJ P,SPECSTORE + MOVE P,PSAV(TB) ; GET OTHER STUFF + MOVE AB,ABSAV(B) + HLRE A,AB ; COMPUTE # OF ARGS + MOVNI A,-FRAMLN(A) ; MAKE TP POINT PAST FRAME + HRLI A,(A) + MOVE C,TPSAV(TB) ; COMPUTE TP + ADD C,A + MOVE TP,C + MOVE TB,B ; FIX UP TB + HRRZ C,FSAV(TB) ; GET FUNCTION + CAMGE C,VECTOP ; CHECK FOR RSUBR + CAMG C,VECBOT + JRST (C) ; GO + GETYP 0,(C) ; RSUBR OR ENTRY? + CAIE 0,TATOM + CAIN 0,TRSUBR + JRST RETRNT + MOVS R,(C) ; SET UP R + HRRI R,(C) + MOVEI C,0 + JRST RETRN3 + +RETRNT: CAIE 0,TRSUBR + JRST RETRN1 + MOVE R,1(C) +RETRN4: HRRZ C,2(C) ; OFFSET +RETRN3: SKIPL M,1(R) + JRST RETRN5 +RETRN7: ADDI C,(M) + JRST (C) + +RETRN5: MOVEI D,(M) ; TOTAL OFFSET + MOVSS M + ADD M,PURVEC+1(TVP) + SKIPL M,1(M) + JRST RETRN6 + ADDI M,(D) + JRST RETRN7 +RETRN6: HLRZ A,1(R) + PUSH P,D + PUSH P,C + PUSHJ P,PLOAD + JRST RETRER ; LOSER + POP P,C + POP P,D + MOVE M,B + JRST RETRN7 + +RETRN1: MOVE B,1(C) + PUSH TP,$TVEC + PUSH TP,C + PUSHJ P,IGVAL + GETYP 0,A + MOVE C,(TP) + SUB TP,[2,,2] + CAIE 0,TRSUBR + JRST RETRN2 + MOVE R,B + JRST RETRN3 + +RETRN2: PUSH TP,$TATOM + PUSH TP,EQUOTE CANT-RETRY-ENTRY-GONE + JRST CALER1 + +RETRER: PUSH TP,$TATOM + PUSH TP,EQUOTE PURE-LOAD-FAILURE + JRST CALER1 + + +;FUNCTION TO DO ERROR RETURN + +MFUNCTION ERRET,SUBR + + ENTRY + HLRE A,AB ; -2*# OF ARGS + JUMPGE A,STP ; RESTART PROCESS + ASH A,-1 ; -# OF ARGS + AOJE A,ERRET2 ; NO FRAME SUPPLIED + AOJL A,TMA + ADD AB,[2,,2] + PUSHJ P,OKFRT + JRST WTYP2 + SUB AB,[2,,2] + PUSHJ P,CHPROC ; POINT TO FRAME SLOT + JRST ERRET3 +ERRET2: MOVE B,IMQUOTE LER,[LERR ]INTRUP + PUSHJ P,ILVAL ; GET ITS VALUE +ERRET3: PUSH TP,A + PUSH TP,B + MOVEI B,-1(TP) + PUSHJ P,CHFSWP ; CHECK VALIDITY AND SWAP IF NECESSARY + HRRZ 0,OTBSAV(B) ; TOP LEVEL? + JUMPE 0,TOPLOS + PUSHJ P,CHUNW ; ANY UNWINDING + JRST CHFINIS + + +; FUNCTION TO RETURN LAST ERROR FRAME OR PREVIOUS FRAME + +MFUNCTION FRAME,SUBR + ENTRY + SETZB A,B + JUMPGE AB,FRM1 ; DEFAULT CASE + CAMG AB,[-3,,0] ; SKIP IF OK ARGS + JRST TMA + PUSHJ P,OKFRT ; A FRAME OR SIMILAR THING? + JRST WTYP1 + +FRM1: PUSHJ P,CFRAME ; GO TO INTERNAL + JRST FINIS + +CFRAME: JUMPN A,FRM2 ; ARG SUPPLIED? + MOVE B,IMQUOTE LER,[LERR ]INTRUP + PUSHJ P,ILVAL + JRST FRM3 +FRM2: PUSHJ P,CHPROC ; CHECK FOR PROCESS + PUSH TP,A + PUSH TP,B + MOVEI B,-1(TP) ; POINT TO SLOT + PUSHJ P,CHFRM ; CHECK IT + MOVE C,(TP) ; GET FRAME BACK + MOVE B,OTBSAV(C) ;GET PREVIOUS FRAME + SUB TP,[2,,2] + TRNN B,-1 ; SKIP IF OK + JRST TOPLOSE + +FRM3: JUMPN B,FRM4 ; JUMP IF WINNER + MOVE B,IMQUOTE THIS-PROCESS + PUSHJ P,ILVAL ; GET PROCESS OF INTEREST + GETYP A,A ; CHECK IT + CAIN A,TUNBOU + MOVE B,PVP ; USE CURRENT + MOVEI A,PVLNT*2+1(B) ; POINT TO DOPE WORDS + MOVE B,TBINIT+1(B) ; AND BASE FRAME +FRM4: HLL B,OTBSAV(B) ;TIME + HRLI A,TFRAME + POPJ P, + +OKFRT: AOS (P) ;ASSUME WINNAGE + GETYP 0,(AB) + MOVE A,(AB) + MOVE B,1(AB) + CAIE 0,TFRAME + CAIN 0,TENV + POPJ P, + CAIE 0,TPVP + CAIN 0,TACT + POPJ P, + SOS (P) + POPJ P, + +CHPROC: GETYP 0,A ; TYPE + CAIE 0,TPVP + POPJ P, ; OK + MOVEI A,PVLNT*2+1(B) + CAMN B,PVP ; THIS PROCESS? + JRST CHPRO1 + MOVE B,TBSTO+1(B) + JRST FRM4 + +CHPRO1: MOVE B,OTBSAV(TB) + JRST FRM4 + +; FUNCTION TO RETURN ARGS TUPLE FOR A FRAME + +MFUNCTION ARGS,SUBR + ENTRY 1 + PUSHJ P,OKFRT ; CHECK FRAME TYPE + JRST WTYP1 + PUSHJ P,CARGS + JRST FINIS + +CARGS: PUSHJ P,CHPROC + PUSH TP,A + PUSH TP,B + MOVEI B,-1(TP) ; POINT TO FRAME SLOT + PUSHJ P,CHFRM ; AND CHECK FOR VALIDITY + MOVE C,(TP) ; FRAME BACK + MOVSI A,TARGS +CARGS1: GETYP 0,FSAV(C) ; IS THIS A FUNNY ONE + CAIE 0,TCBLK ; SKIP IF FUNNY + JRST .+3 ; NO NORMAL + MOVE C,OTBSAV(C) ; ASSOCIATE WITH PREVIOUS FRAME + JRST CARGS1 + HLR A,OTBSAV(C) ; TIME IT AND + MOVE B,ABSAV(C) ; GET POINTER + SUB TP,[2,,2] ; FLUSH CRAP + POPJ P, + +; FUNCTION TO RETURN FUNCTION ASSOCIATED WITH A FRAME + +MFUNCTION FUNCT,SUBR ;RETURNS FUNCTION NAME OF + ENTRY 1 ; FRAME ARGUMENT + PUSHJ P,OKFRT ; CHECK TYPE + JRST WTYP1 + PUSHJ P,CFUNCT + JRST FINIS + +CFUNCT: PUSHJ P,CHPROC + PUSH TP,A + PUSH TP,B + MOVEI B,-1(TP) + PUSHJ P,CHFRM ; CHECK IT + MOVE C,(TP) ; RESTORE FRAME + HRRZ A,FSAV(C) ;FUNCTION POINTER + CAMG A,VECTOP ;IS THIS AN RSUBR ? + CAMGE A,VECBOT + SKIPA B,@-1(A) ;NO, GET SUBR'S NAME POINTER + MOVE B,(A)+3 ;YES, GET RSUBR'S NAME ENTRY + MOVSI A,TATOM + SUB TP,[2,,2] + POPJ P, + +BADFRAME: + PUSH TP,$TATOM + PUSH TP,EQUOTE FRAME-NO-LONGER-EXISTS + JRST CALER1 + + +TOPLOSE: + PUSH TP,$TATOM + PUSH TP,EQUOTE TOP-LEVEL-FRAME + JRST CALER1 + + + + +; ROUTINE TO HANG INDEFINITELY WITH INTERRUPTS ENABLED + +MFUNCTION HANG,SUBR + + ENTRY + + JUMPGE AB,HANG1 ; NO PREDICATE + CAMGE AB,[-3,,] + JRST TMA +REHANG: MOVE A,[PUSHJ P,CHKPRH] + MOVEM A,ONINT ; CHECK PREDICATE AFTER ANY INTERRUPT + PUSH TP,(AB) + PUSH TP,1(AB) +HANG1: ENABLE ;LET OURSELVES BE INTERRUPTED OUT + PUSHJ P,%HANG + DISABLE ;PREVENT INTERRUPTS AT RANDOM TIMES + SETZM ONINT + MOVE A,$TATOM + MOVE B,MQUOTE T + JRST FINIS + + +; ROUTINE TO SLEEP FOR POSITIVE NUMBER OF SECONDS WITH INTERRUPTS ENABLED +; ARGUMENT SHOULD BE OF TYPE FIX OR FLOAT AND NON-NEGATIVE + +MFUNCTION SLEEP,SUBR + + ENTRY + + JUMPGE AB,TFA + CAML AB,[-3,,] + JRST SLEEP1 + CAMGE AB,[-5,,] + JRST TMA + PUSH TP,2(AB) + PUSH TP,3(AB) +SLEEP1: GETYP 0,(AB) + CAIE 0,TFIX + JRST .+5 + MOVE B,1(AB) + JUMPL B,OUTRNG ;ARG SHOULDNT BE NEGATIVE + IMULI B,30. ;CONVERT TO # OF THIRTIETHS OF A SECOND + JRST SLEEPR ;GO SLEEP + CAIE 0,TFLOAT ;IF IT WASNT FIX MAKE SURE IT IS FLOAT + JRST WTYP1 ;WRONG TYPE ARG + MOVE B,1(AB) + FMPR B,[30.0] ;CONVERT TO FLOATING # OF THIRTIETHS OF A SECOND + MULI B,400 ;KLUDGE TO FIX IT + TSC B,B + ASH C,(B)-243 + MOVE B,C ;MOVE THE FIXED NUMBER INTO B + JUMPL B,OUTRNG ;CHECK TO SEE THAT WE HAVE POSITIVE NUMBER +SLEEPR: MOVE A,B +RESLEE: MOVE B,[PUSHJ P,CHKPRS] + CAMGE AB,[-3,,] + MOVEM B,ONINT + ENABLE + PUSHJ P,%SLEEP + DISABLE + SETZM ONINT + MOVE A,$TATOM + MOVE B,MQUOTE T + JRST FINIS + +CHKPRH: PUSH P,B + MOVEI B,HANGP + JRST .+3 + +CHKPRS: PUSH P,B + MOVEI B,SLEEPP + HRRM B,LCKINT + SETZM ONINT ; TURN OFF FEATURE FOR NOW + POP P,B + POPJ P, + +HANGP: SKIPA B,[REHANG] +SLEEPP: MOVEI B,RESLEE + PUSH P,B + PUSH P,A + DISABLE + PUSH TP,(TB) + PUSH TP,1(TB) + MCALL 1,EVAL + GETYP 0,A + CAIE 0,TFALSE + JRST FINIS + POP P,A + POPJ P, + +MFUNCTION VALRET,SUBR +; SUBR TO VALRET A STRING TO SUPERIOR ITS PROCESS + + ENTRY 1 + GETYP A,(AB) ; GET TYPE OF ARGUMENT + CAIE A,TCHSTR ; IS IT A CHR STRING? + JRST WTYP1 ; NO...ERROR WRONG TYPE + PUSHJ P,CSTACK ; COPY THE CHR STRING TO THE STACK + ; CSTACK IS IN ATOMHK + MOVEI B,0 ; ASCIZ TERMINATOR + EXCH B,(P) ; STORE AND RETRIEVE COUNT + +; CALCULATE THE BEGINNING ADDR OF THE STRING + MOVEI A,-1(P) ; GET ADDR OF TOP OF STACK + SUBI A,-1(B) ; GET STARTING ADDR + PUSHJ P,%VALRE ; PASS UP TO MONITOR + JRST IFALSE ; IF HE RETURNS, RETURN FALSE + + +MFUNCTION LOGOUT,SUBR + +; SUBR TO DO A .LOGOUT (VALID ONLY AT TOP LEVEL) + ENTRY 0 + PUSHJ P,%TOPLQ ; SKIP IF AT TOP LEVEL + JRST IFALSE + PUSHJ P,CLOSAL + PUSHJ P,%LOGOUT ; TRY TO FLUSH + JRST IFALSE ; COULDN'T DO IT...RETURN FALSE + +; FUNCTS TO GET UNAME AND JNAME + +MFUNCTION UNAME,SUBR + + ENTRY 0 + + PUSHJ P,%RUNAM + JRST RSUJNM + +MFUNCTION JNAME,SUBR + + ENTRY 0 + + PUSHJ P,%RJNAM + JRST RSUJNM + +; FUNCTION TO SET AND READ GLOBAL SNAME + +MFUNCTION SNAME,SUBR + + ENTRY + + JUMPGE AB,SNAME1 + CAMG AB,[-3,,] + JRST TMA + GETYP A,(AB) ; ARG MUST BE STRING + CAIE A,TCHSTR + JRST WTYP1 + PUSH TP,$TATOM + PUSH TP,IMQUOTE SNM + PUSH TP,(AB) + PUSH TP,1(AB) + MCALL 2,SETG + JRST FINIS + +SNAME1: MOVE B,IMQUOTE SNM + PUSHJ P,IDVAL1 + GETYP 0,A + CAIN 0,TCHSTR + JRST FINIS + MOVE A,$TCHSTR + MOVE B,CHQUOTE + JRST FINIS + +RSUJNM: PUSHJ P,6TOCHS ; CONVERT IT + JRST FINIS + + +SGSNAM: MOVE B,IMQUOTE SNM + PUSHJ P,IDVAL1 + GETYP 0,A + CAIE 0,TCHSTR + JRST SGSN1 + + PUSH TP,A + PUSH TP,B + PUSHJ P,STRTO6 + POP P,A + SUB TP,[2,,2] + JRST .+2 + +SGSN1: MOVEI A,0 + PUSHJ P,%SSNAM ; SET SNAME IN SYSTEM + POPJ P, + + + +;THIS SUBROUTINE ALLOCATES A NEW PROCESS TAKES NO ARGS AND +;IS CALLED BY PUSHJ P,. RETURNS IN A AND B A NEW PROCESS. + +ICR: MOVEI A,PVLNT ;SETUP CALL TO VECTOR FOR PVP + PUSHJ P,IVECT ;GOBBLE A VECTOR + HRLI C,PVBASE ;SETUP A BLT POINTER + HRRI C,(B) ;GET INTO ADDRESS + BLT C,PVLNT*2-1(B) ;COPY A PROTOTYPE INTO NEW PVP + MOVSI C,400000+SPVP+.VECT. ;SET SPECIAL TYPE + MOVEM C,PVLNT*2(B) ;CLOBBER IT IN + PUSH TP,A ;SAVE THE RESULTS OF VECTOR + PUSH TP,B + + PUSH TP,$TFIX ;GET A UNIFORM VECTOR + PUSH TP,[PLNT] + MCALL 1,UVECTOR + ADD B,[PDLBUF-2,,-1] ;FUDGE WITH BUFFER + MOVE C,(TP) ;REGOBBLE PROCESS POINTER + MOVEM B,PSTO+1(C) ;STORE IN ALL HOMES + MOVEM B,PBASE+1(C) + + + MOVEI A,TPLNT ;PREPARE TO CREATE A TEMPORARY PDL + PUSHJ P,IVECT ;GET THE TEMP PDL + ADD B,[PDLBUF,,0] ;PDL GROWTH HACK + MOVE C,(TP) ;RE-GOBBLE NEW PVP + SUB B,[1,,1] ;FIX FOR STACK + MOVEM B,TPBASE+1(C) + +;SETUP INITIAL BINDING + + PUSH B,$TBIND + MOVEM B,SPBASE+1(C) ;SAVE AS BASE OF SP + MOVEM B,SPSTO+1(C) ;AND CURRENT THEREOF + MOVEM B,CURFCN+1(C) ; AND AS CURRENT FCN FOR SPEC/UNSPEC LOGIC + PUSH B,IMQUOTE THIS-PROCESS + PUSH B,$TPVP ;GIVE IT PROCESS AS VALUE + PUSH B,C + ADD B,[2,,2] ;FINISH FRAME + MOVEM B,TPSTO+1(C) ;MAKE THIS THE CURRENT STACK POINTER + MOVEM C,PVPSTO+1(C) ;SAVE THE NEW PVP ITSELF + MOVEM TVP,TVPSTO+1(C) ;AND THE GOOD OLD TRANSFER VECTOR + AOS A,IDPROC ;GOBBLE A UNIQUE PROCESS I.D. + MOVEM A,PROCID+1(C) ;SAVE THAT ALSO + AOS A,PTIME ; GET A UNIQUE BINDING ID + MOVEM A,BINDID+1(C) + + MOVSI A,TPVP ;CLOBBER THE TYPE + MOVE B,(TP) ;AND POINTER TO PROCESS + SUB TP,[2,,2] + POPJ P, + +;MINI ROUTINE TO CALL VECTOR WITH COUNT IN A + +IVECT: PUSH TP,$TFIX + PUSH TP,A + MCALL 1,VECTOR ;GOBBLE THE VECTOR + POPJ P, + + +;SUBROUTINE TO SWAP A PROCESS IN +;CALLED WITH JSP A,SWAP AND NEW PVP IN B + +SWAP: ;FIRST STORE ALL THE ACS + + IRP A,,[PVP,TVP,AB,TB,TP,SP,P,M,R] + MOVEM A,A!STO+1(PVP) + TERMIN + + SETOM 1(TP) ; FENCE POST MAIN STACK + MOVEM TP,TPSAV(TB) ; CORRECT FRAME + SETZM PSAV(TB) ; CLEAN UP CURRENT FRAME + SETZM SPSAV(TB) + SETZM PCSAV(TB) + + MOVE E,PVP ;RETURN OLD PROCESS IN E + MOVE PVP,D ;AND MAKE NEW ONE BE D + +SWAPIN: + ;NOW RESTORE NEW PROCESSES AC'S + + IRP A,,[PVP,TVP,AB,TB,TP,SP,P,M,R] + MOVE A,A!STO+1(PVP) + TERMIN + + JRST (C) ;AND RETURN + + + + +;SUBRS ASSOCIATED WITH TYPES + +;INTERNAL FUNCTION TO GET STRAGE ALLOCATION TYPE +;GETS THE TYPE CODE IN A AND RETURNS SAT IN A. + +SAT: LSH A,1 ;TIMES 2 TO REF VECTOR + HRLS A ;TO BOTH HALVES TO HACK AOBJN POINTER + ADD A,TYPVEC+1(TVP) ;ACCESS THE VECTOR + HRR A,(A) ;GET PROBABLE SAT + JUMPL A,.+2 ;DID WE REALLY HAVE A VALID TYPE + MOVEI A,0 ;NO RETURN 0 + ANDI A,SATMSK + POPJ P, ;AND RETURN + +;TYPE (ITYPE) ARE FUNCTIONS TO RETURN THE ATOMIC NAME OF THE +;TYPE OF A GOODIE. TYPE TAKES ITS ARGS ON AP AND RETURNS IN A AND B. +;ITYPE TAKES ITS ARGS IN A AND B AND RETURNS IN SAME (B=0) FOR INVALID +;TYPECODE. +MFUNCTION TYPE,SUBR + + ENTRY 1 + GETYP A,(AB) ;TYPE INTO A +TYPE1: PUSHJ P,ITYPE ;GO TO INTERNAL + JUMPN B,FINIS ;GOOD RETURN +TYPERR: PUSH TP,$TATOM ;SETUP ERROR CALL + PUSH TP,EQUOTE TYPE-UNDEFINED + JRST CALER1" ;STANDARD ERROR HACKER + +CITYPE: GETYP A,A ; GET TYPE FOR COMPILER CALL +ITYPE: LSH A,1 ;TIMES 2 + HRLS A ;TO BOTH SIDES + ADD A,TYPVEC+1(TVP) ;GET ACTUAL LOCATION + JUMPGE A,TYPERR ;LOST, TYPE OUT OF BOUNDS + MOVE B,1(A) ;PICKUP TYPE + HLLZ A,(A) + POPJ P, + +; PREDICATE -- IS OBJECT OF TYPE SPECIFIED + +MFUNCTION %TYPEQ,SUBR,[TYPE?] + + ENTRY + + MOVE D,AB ; GET ARGS + ADD D,[2,,2] + JUMPGE D,TFA + MOVE A,(AB) + HLRE C,D + MOVMS C + ASH C,-1 ; FUDGE + PUSHJ P,ITYPQ ; GO INTERNAL + JFCL + JRST FINIS + +ITYPQ: GETYP A,A ; OBJECT + PUSHJ P,ITYPE +TYPEQ0: SOJL C,CIFALS + GETYP 0,(D) + CAIE 0,TATOM ; Type name must be an atom + JRST WRONGT + CAMN B,1(D) ; Same as the OBJECT? + JRST CPOPJ1 ; Yes, return type name + ADD D,[2,,2] + JRST TYPEQ0 ; No, continue comparing + +CIFALS: MOVEI B,0 + MOVSI A,TFALSE + POPJ P, + +CTYPEQ: SOJE A,CIFALS ; TREAT NO ARGS AS FALSE + MOVEI D,1(A) ; FIND BASE OF ARGS + ASH D,1 + HRLI D,(D) + SUBM TP,D ; D POINTS TO BASE + MOVE E,D ; SAVE FOR TP RESTORE + ADD D,[3,,3] ; FUDGE + MOVEI C,(A) ; NUMBER OF TYPES + MOVE A,-2(D) + PUSHJ P,ITYPQ + JFCL ; IGNORE SKIP FOR NOW + MOVE TP,E ; SET TP BACK + JUMPL B,CPOPJ1 ; SKIP + POPJ P, + +; Entries to get type codes for types for fixing up RSUBRs and assembling + +MFUNCTION %TYPEC,SUBR,[TYPE-C] + + ENTRY + + JUMPGE AB,TFA + GETYP 0,(AB) + CAIE 0,TATOM + JRST WTYP1 + MOVE B,1(AB) + CAMGE AB,[-3,,0] ; skip if only type name given + JRST GTPTYP + MOVE C,MQUOTE ANY + +TYPEC1: PUSHJ P,CTYPEC ; go to internal + JRST FINIS + +GTPTYP: CAMGE AB,[-5,,0] + JRST TMA + GETYP 0,2(AB) + CAIE 0,TATOM + JRST WTYP2 + MOVE C,3(AB) + JRST TYPEC1 + +CTYPEC: PUSH P,C ; save primtype checker + PUSHJ P,TYPLOO ; search type vector + POP P,B + CAMN B,MQUOTE ANY + JRST CTPEC1 + PUSH P,D + HRRZ A,(A) + ANDI A,SATMSK + PUSH P,A + PUSHJ P,TYPLOO + HRRZ 0,(A) + ANDI 0,SATMSK + CAME 0,(P) + JRST TYPDIF + MOVE D,-1(P) + SUB P,[2,,2] +CTPEC1: MOVEI B,(D) + MOVSI A,TTYPEC + POPJ P, + +MFUNCTION %TYPEW,SUBR,[TYPE-W] + + ENTRY + + JUMPGE AB,TFA + GETYP 0,(AB) + CAIE 0,TATOM + JRST WTYP1 + MOVEI D,0 + MOVE C,MQUOTE ANY + MOVE B,1(AB) + CAMGE AB,[-3,,0] + JRST CTYPW1 + +CTYPW3: PUSHJ P,CTYPEW + JRST FINIS + +CTYPW1: GETYP 0,2(AB) + CAIE 0,TATOM + JRST WTYP2 + CAMGE AB,[-5,,0] ; JUMP IF RH IS GIVEN + JRST CTYPW2 + MOVE C,3(AB) + JRST CTYPW3 + +CTYPW2: CAMGE AB,[-7,,0] + JRST TMA + GETYP 0,4(AB) + CAIE 0,TFIX + JRST WRONGT + MOVE D,5(AB) + JRST CTYPW3 + +CTYPEW: PUSH P,D + PUSHJ P,CTYPEC ; GET CODE IN B + POP P,B + HRLI B,(D) + MOVSI A,TTYPEW + POPJ P, + +;PRIMTTYPE RETURNS THE TYPE ATOM OF A PRIMITIVE TYPE IN A CLASS + +STBL: REPEAT NUMSAT,MQUOTE INTERNAL-TYPE + +LOC STBL + +IRP A,,[[1WORD,WORD],[2WORD,LIST],[NWORD,UVECTOR],[2NWORD,VECTOR],[STORE,STORAGE] +[ARGS,TUPLE],[FRAME,FRAME],[ATOM,ATOM],[LOCID,LOCD],[CHSTR,STRING] +[PVP,PROCESS],[ASOC,ASOC],[LOCA,LOCA],[LOCS,LOCS],[LOCU,LOCU],[LOCV,LOCV] +[LOCL,LOCL],[LOCN,LOCAS],[LOCT,LOCT]] +IRP B,C,[A] +LOC STBL+S!B +MQUOTE C + +.ISTOP + +TERMIN +TERMIN + +LOC STBL+NUMSAT+1 + + +MFUNCTION TYPEPRIM,SUBR + + ENTRY 1 + GETYP A,(AB) + CAIE A,TATOM + JRST NOTATOM + MOVE B,1(AB) + PUSHJ P,CTYPEP + JRST FINIS + +CTYPEP: PUSHJ P,TYPLOO ; CONVERT ATOM TO CODE + HRRZ A,(A) ; SAT TO A + ANDI A,SATMSK + JRST PTYP1 + +MFUNCTION PRIMTYPE,SUBR + + ENTRY 1 + + MOVE A,(AB) ;GET TYPE + PUSHJ P,CPTYPE + JRST FINIS + +CPTYPE: GETYP A,A + PUSHJ P,SAT ;GET SAT +PTYP1: JUMPE A,TYPERR + MOVE B,MQUOTE TEMPLATE + CAIG A,NUMSAT ; IF BIG SAT, THEN TEMPLATE + MOVE B,@STBL(A) + MOVSI A,TATOM + POPJ P, + + +; RSUBR MAKES A VECTOR INTO AN OBJECT OF TYPE RSUBR, ALSO SLIGHTLY MUNGING IT + +MFUNCTION RSUBR,SUBR + ENTRY 1 + + GETYP A,(AB) + CAIE A,TVEC ; MUST BE VECTOR + JRST WTYP1 + MOVE B,1(AB) ; GET IT + GETYP A,(B) ; CHECK 1ST ELEMENTS TYPE + CAIN A,TPCODE ; PURE CODE + JRST .+3 + CAIE A,TCODE + JRST NRSUBR + HLRM B,(B) ; CLOBEER SPECIAL COUNT FIELD + MOVSI A,TRSUBR + JRST FINIS + +NRSUBR: PUSH TP,$TATOM + PUSH TP,EQUOTE FIRST-ELEMENT-OF-VECTOR-NOT-CODE + JRST CALER1 + +; ROUTINE TO GENERATE ENTRYY OTHER THAN FIRST TO RSUBRR + +MFUNCTION MENTRY,SUBR,[RSUBR-ENTRY] + + ENTRY 2 + + GETYP 0,(AB) ; TYPE OF ARG + CAIE 0,TVEC ; BETTER BE VECTOR + JRST WTYP1 + GETYP 0,2(AB) + CAIE 0,TFIX + JRST WTYP2 + MOVE B,1(AB) ; GET VECTOR + CAML B,[-3,,0] + JRST BENTRY + GETYP 0,(B) ; FIRST ELEMENT + CAIE 0,TRSUBR + JRST MENTR1 +MENTR2: GETYP 0,2(B) + CAIE 0,TATOM + JRST BENTRY + MOVE C,3(AB) + HRRM C,2(B) ; OFFSET INTO VECTOR + HLRM B,(B) + MOVSI A,TENTER + JRST FINIS + +MENTR1: CAIE 0,TATOM + JRST BENTRY + MOVE B,1(B) ; GET ATOM + PUSHJ P,IGVAL ; GET VAL + GETYP 0,A + CAIE 0,TRSUBR + JRST BENTRY + MOVE B,1(AB) ; RESTORE B + JRST MENTR2 + +BENTRY: PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-VECTOR + JRST CALER1 + +; SUBR TO GET ENTRIES OFFSET + +MFUNCTION LENTRY,SUBR,[ENTRY-LOC] + + ENTRY 1 + + GETYP 0,(AB) + CAIE 0,TENTER + JRST WTYP1 + MOVE B,1(AB) + HRRZ B,2(B) + MOVSI A,TFIX + JRST FINIS + +; RETURN FALSE + +RTFALS: MOVSI A,TFALSE + MOVEI B,0 + POPJ P, + +;SUBROUTINE CALL FOR RSUBRs +RCALL: SUBM M,(P) ;CALCULATE PC's OFFSET IN THE RSUBR + PUSHJ P,@0 ;GO TO THE PROPER SUBROUTINE + SUBM M,(P) ;RECONSTITUTE THE RSUBR's PC + POPJ P, + + +; ERRORS IN COMPILED CODE MAY END UP HERE + +COMPERR: + PUSH TP,$TATOM + PUSH TP,EQUOTE ERROR-IN-COMPILED-CODE + JRST CALER1 + + +;CHTYPE TAKES TWO ARGUMENTS. ANY GOODIE AND A AN ATOMIC TYPE NAME +;IT CHECKS THE STORAGE ALLOCATION TYPES OF THE TWO ARE THE SAME AND +;IF THEY ARE CHANGES THE TYPE OF THE FIRST TO THAT NAME D IN THE SECOND + +MFUNCTION CHTYPE,SUBR + + ENTRY 2 + GETYP A,2(AB) ;FIRST CHECK THAT ARG 2 IS AN ATOM + CAIE A,TATOM + JRST NOTATOM + MOVE B,3(AB) ;AND TYPE NAME + PUSHJ P,TYPLOO ;GO LOOKUP TYPE +TFOUND: HRRZ B,(A) ;GOBBLE THE SAT + TRNE B,CHBIT ; SKIP IF CHTYPABLE + JRST CANTCH + TRNE B,TMPLBT ; TEMPLAT + HRLI B,-1 + AND B,[-1,,SATMSK] + GETYP A,(AB) ;NOW GET TYPE TO HACK + PUSHJ P,SAT ;FIND OUT ITS SAT + JUMPE A,TYPERR ;COMPLAIN + CAILE A,NUMSAT + JRST CHTMPL ; JUMP IF TEMPLATE DATA + CAIE A,(B) ;DO THEY AGREE? + JRST TYPDIF ;NO, COMPLAIN +CHTMP1: MOVSI A,(D) ;GET NEW TYPE + HRR A,(AB) ; FOR DEFERRED GOODIES + JUMPL B,CHMATC ; CHECK IT + MOVE B,1(AB) ;AND VALUE + JRST FINIS + +CHTMPL: MOVE E,1(AB) ; GET ARG + HLRZ A,(E) + ANDI A,SATMSK + MOVE 0,3(AB) ; SEE IF TO "TEMPLATE" + CAME 0,MQUOTE TEMPLATE + CAIN A,(B) + JRST CHTMP1 + JRST TYPDIF + +CHMATC: PUSH TP,A + PUSH TP,1(AB) ; SAVE GOODIE + MOVSI A,TATOM + MOVE B,3(AB) + MOVSI C,TATOM + MOVE D,MQUOTE DECL + PUSHJ P,IGET ; FIND THE DECL + MOVE C,(AB) + MOVE D,1(AB) ; NOW GGO TO MATCH + PUSHJ P,TMATCH + JRST TMPLVIO + POP TP,B + POP TP,A + JRST FINIS + +TYPLOO: PUSHJ P,TYPFND + JRST .+2 + POPJ P, + PUSH TP,$TATOM ;LOST, GENERATE ERROR + PUSH TP,EQUOTE BAD-TYPE-NAME + JRST CALER1 + +TYPFND: MOVE A,TYPVEC+1(TVP) ;GOBBLE DOWN TYPE VECTOR + MOVEI D,0 ;INITIALIZE TYPE COUNTER +TLOOK: CAMN B,1(A) ;CHECK THIS ONE + JRST CPOPJ1 + ADDI D,1 ;BUMP COUNTER + AOBJP A,.+2 ;COUTN DOWN ON VECTOR + AOBJN A,TLOOK + POPJ P, +CPOPJ1: AOS (P) + POPJ P, + +TYPDIF: PUSH TP,$TATOM ;MAKE ERROR MESSAGE + PUSH TP,EQUOTE STORAGE-TYPES-DIFFER + JRST CALER1 + + +TMPLVI: PUSH TP,$TATOM + PUSH TP,EQUOTE DECL-VIOLATION + JRST CALER1 + + +; FUNCTION TO ADD A NEW TYPE TO THE WORLD WITH GIVEN PRIMITIVE TYPE + +MFUNCTION NEWTYPE,SUBR + + ENTRY + + HLRZ 0,AB ; CHEC # OF ARGS + CAILE 0,-4 ; AT LEAST 2 + JRST TFA + CAIGE 0,-6 + JRST TMA ; NOT MORE THAN 3 + GETYP A,(AB) ; GET 1ST ARGS TYPE (SHOULD BE ATOM) + GETYP C,2(AB) ; SAME WITH SECOND + CAIN A,TATOM ; CHECK + CAIE C,TATOM + JRST NOTATOM + + MOVE B,3(AB) ; GET PRIM TYPE NAME + PUSHJ P,TYPLOO ; LOOK IT UP + HRRZ A,(A) ; GOBBLE SAT + HRLI A,TATOM ; MAKE NEW TYPE + PUSH P,A ; AND SAVE + MOVE B,1(AB) ; SEE IF PREV EXISTED + PUSHJ P,TYPFND + JRST NEWTOK ; DID NOT EXIST BEFORE + MOVEI B,2(A) ; FOR POSSIBLE TMPLAT BIT + HRRZ A,(A) ; GET SAT + HRRZ 0,(P) ; AND PROPOSED + ANDI 0,SATMSK + ANDI A,SATMSK + CAIN 0,(A) ; SKIP IF LOSER + JRST NEWTFN ; O.K. + + PUSH TP,$TATOM + PUSH TP,EQUOTE TYPE-ALREADY-EXISTS + JRST CALER1 + +NEWTOK: POP P,A + MOVE B,1(AB) ; NEWTYPE NAME + PUSHJ P,INSNT ; MUNG IN NEW TYPE + +NEWTFN: CAML AB,[-5,,] ; SKIP IF TEMPLAT SUPPLIED + JRST NEWTF1 + MOVEI 0,TMPLBT ; GET THE BIT + IORM 0,-2(B) ; INTO WORD + MOVE A,(AB) ; GET TYPE NAME + MOVE B,1(AB) + MOVSI C,TATOM + MOVE D,MQUOTE DECL + PUSH TP,4(AB) ; GET TEMLAT + PUSH TP,5(AB) + PUSHJ P,IPUT +NEWTF1: MOVE A,(AB) + MOVE B,1(AB) ; RETURN NAME + JRST FINIS + +; SET UP GROWTH FIELDS + +IGROWT: SKIPA A,[111100,,(C)] +IGROWB: MOVE A,[001100,,(C)] + HLRE B,C + SUB C,B ; POINT TO DOPE WORD + MOVE B,TYPIC ; INDICATED GROW BLOCK + DPB B,A + POPJ P, + +INSNT: PUSH TP,A + PUSH TP,B ; SAVE NAME OF NEWTYPE + MOVE C,TYPBOT+1(TVP) ; CHECK GROWTH NEED + CAMGE C,TYPVEC+1(TVP) + JRST ADDIT ; STILL ROOM +GAGN: PUSHJ P,IGROWB ; SETUP BOTTOM GROWTH + SKIPE C,EVATYP+1(TVP) + PUSHJ P,IGROWT ; SET UP TOP GROWTH + SKIPE C,APLTYP+1(TVP) + PUSHJ P,IGROWT + MOVE C,[11.,,5] ; SET UP INDICATOR FOR AGC + PUSHJ P,AGC ; GROW THE WORLD + AOJL A,GAGN ; BAD AGC LOSSAGE + MOVE 0,[-101,,-100] + ADDM 0,TYPBOT+1(TVP) ; FIX UP POINTER + +ADDIT: MOVE C,TYPVEC+1(TVP) + SUB C,[2,,2] ; ALLOCATE ROOM + MOVEM C,TYPVEC+1(TVP) + HLRE B,C ; PREPARE TO BLT + SUBM C,B ; C POINTS DOPE WORD END + HRLI C,2(C) ; GET BLT AC READY + BLT C,-3(B) + POP TP,-1(B) ; CLOBBER IT IN + POP TP,-2(B) + POPJ P, + + +; Interface to interpreter for setting up tables associated with +; template data structures. +; A/ <-name of type>- +; B/ <-length ins>- +; C/ <-uvector of length code or 0> +; D/ <-uvector of GETTERs>- +; E/ <-uvector of PUTTERs>- + +CTMPLT: SUBM M,(P) ; could possibly gc during this stuff + SKIPE C ; for now dont handle vector of length ins + FATAL TEMPLATE DATA WITH COMPUTED LENGTH + PUSH TP,$TATOM ; save name of type + PUSH TP,A + PUSH P,B ; save length instr + HLRE A,TD.LNT+1(TVP) ; check for template slots left? + HRRZ B,TD.LNT+1(TVP) + SUB B,A ; point to dope words + HLRZ B,1(B) ; get real length + ADDM B,A ; any room? + JUMPG A,GOODRM ; jump if ok + + PUSH TP,$TUVEC ; save getters and putters + PUSH TP,D + PUSH TP,$TUVEC + PUSH TP,E + MOVEI A,6(B) ; grow it 10 by copying + PUSH P,A ; save new length + PUSHJ P,CAFRE1 ; get frozen uvector + ADD B,[10,,10] ; rest it down some + HRL C,TD.LNT+1(TVP) ; prepare to BLT in + MOVEM B,TD.LNT+1(TVP) ; and save as new length vector + HRRI C,(B) ; destination + ADD B,(P) ; final destination address + BLT C,-13(B) + MOVE A,(P) ; length for new getters + PUSHJ P,CAFRE1 + MOVE C,TD.GET+1(TVP) ; get old for copy + MOVEM B,TD.GET+1(TVP) + HRRI C,(B) + ADD B,(P) + BLT C,-13(B) ; zap those guys in + MOVE A,(P) ; finally putters + PUSHJ P,CAFRE1 + MOVE C,TD.PUT+1(TVP) + MOVEM B,TD.PUT+1(TVP) + HRRI C,(B) ; BLT pointer + ADD B,(P) + BLT C,-13(B) + SUB P,[1,,1] ; flush stack craft + MOVE E,(TP) + MOVE D,-2(TP) + SUB TP,[4,,4] + +GOODRM: MOVE B,TD.LNT+1(TVP) ; move down to fit new guy + SUB B,[1,,1] ; will always win due to prev checks + MOVEM B,TD.LNT+1(TVP) + HRLI B,1(B) + HLRE A,TD.LNT+1(TVP) + MOVNS A + ADDI A,-1(B) ; A/ final destination + BLT B,-1(A) + POP P,(A) ; new length ins munged in + HLRE A,TD.LNT+1(TVP) + MOVNS A ; A/ offset for other guys + PUSH P,A ; save it + ADD A,TD.GET+1(TVP) ; point for storing uvs of ins + MOVEM D,-1(A) + MOVE A,(P) + ADD A,TD.PUT+1(TVP) + MOVEM E,-1(A) ; store putter also + POP P,A ; compute primtype + ADDI A,NUMSAT + HRLI A,TATOM + MOVE B,(TP) ; ready to mung type vector + SUB TP,[2,,2] + PUSHJ P,INSNT ; insert into vector + JRST MPOPJ + + +; FUNCTIONS TO SET UP EVALUATION AND APPLICATION RULES FOR DATA TYPES + +MFUNCTION EVALTYPE,SUBR + + ENTRY 2 + + PUSHJ P,CHKARG ; VERIFY WINNAGE IN ARGS + MOVEI A,EVATYP ; POINT TO TABLE + MOVEI E,EVTYPE ; POINT TO PURE VERSION +TBLCAL: PUSHJ P,TBLSET ; SETUP TABLE ENTRY + JRST FINIS + +MFUNCTION APPLYTYPE,SUBR + + ENTRY 2 + + PUSHJ P,CHKARG + MOVEI A,APLTYP ; POINT TO APPLY TABLE + MOVEI E,APTYPE ; PURE TABLE + JRST TBLCAL + + +MFUNCTION PRINTTYPE,SUBR + + ENTRY 2 + + PUSHJ P,CHKARG + MOVEI A,PRNTYP ; POINT TO APPLY TABLE + MOVEI E,PRTYPE ; PURE TABLE + JRST TBLCAL + +; CHECK ARGS AND SETUP FOR TABLE HACKER + +CHKARG: GETYP A,(AB) ; 1ST MUST BE TYPE NAME + CAIE A,TATOM + JRST WTYP1 + MOVE B,1(AB) ; GET ATOM + PUSHJ P,TYPLOO ; VERIFY THAT IT IS A TYPE + PUSH P,D ; SAVE TYPE NO. + HRRZ A,(A) ; GET SAT + ANDI A,SATMSK + PUSH P,A + GETYP A,2(AB) ; GET 2D TYPE + CAIE A,TATOM ; EITHER TYPE OR APPLICABLE + JRST TRYAPL ; TRY APPLICABLE + MOVE B,3(AB) ; VERIFY IT IS A TYPE + PUSHJ P,TYPLOO + HRRZ A,(A) ; GET SAT + ANDI A,SATMSK + POP P,C ; RESTORE SAVED SAT + CAIE A,(C) ; SKIP IF A WINNER + JRST TYPDIF ; REPORT ERROR + POP P,C ; GET SAVED TYPE + MOVEI B,0 ; TELL THAT WE ARE A TYPE + POPJ P, + +TRYAPL: PUSHJ P,APLQ ; IS THIS APPLICABLE + JRST NAPT + SUB P,[1,,1] + MOVE B,2(AB) ; RETURN SAME + MOVE D,3(AB) + POP P,C + POPJ P, + + +; HERE TO PUT ENTRY IN APPROPRIATE TABLE + +TBLSET: HRLI A,(A) ; FOR TVP HACKING + ADD A,TVP ; POINT TO TVP SLOT + PUSH TP,B + PUSH TP,D ; SAVE VALUE + PUSH TP,$TVEC + PUSH TP,A + PUSH P,C ; SAVE TYPE BEING HACKED + PUSH P,E + SKIPE B,1(A) ; SKIP IF VECTOR DOESN'T EXIST YET + JRST TBL.OK + HLRE A,TYPBOT+1(TVP) ; GET CURRENT TABLE LNTH + MOVNS A + ASH A,-1 + PUSHJ P,IVECT ; GET VECTOR + MOVE C,(TP) ; POINT TO RETURN POINT + MOVEM B,1(C) ; SAVE VECTOR + +TBL.OK: POP P,E + POP P,C ; RESTORE TYPE + SUB TP,[2,,2] + POP TP,D + POP TP,A + JUMPN A,TBLOK1 ; JUMP IF FUNCTION ETC. SUPPLIED + CAILE D,NUMPRI ; SKIP IF ORIGINAL TYPE + MOVNI E,(D) ; CAUSE E TO ENDUP 0 + ADDI E,(D) ; POINT TO PURE SLOT +TBLOK1: ADDI C,(C) ; POINT TO VECTOR SLOT + ADDI C,(B) + JUMPN A,OK.SET ; OK TO CLOBBER + ADDI B,(D) ; POINT TO TARGET TYPE'S SLOT + ADDI B,(D) ; POINT TO TARGET TYPE'S SLOT + SKIPN A,(B) ; SKIP IF WINNER + SKIPE 1(B) ; SKIP IF LOSER + SKIPA D,1(B) ; SETUP D + JRST CH.PTB ; CHECK PURE TABLE + +OK.SET: MOVEM A,(C) ; STORE + MOVEM D,1(C) + MOVE A,(AB) ; RET TYPE + MOVE B,1(AB) + JRST FINIS + +CH.PTB: MOVEI A,0 + MOVE D,[SETZ NAPT] + JUMPE E,OK.SET + MOVE D,(E) + JRST OK.SET + +CALLTY: MOVE A,TYPVEC(TVP) + MOVE B,TYPVEC+1(TVP) + POPJ P, + +MFUNCTION ALLTYPES,SUBR + + ENTRY 0 + + MOVE A,TYPVEC(TVP) + MOVE B,TYPVEC+1(TVP) + JRST FINIS + +; + +;FUNCTION TO RETURN TYPE OF ELEMENTS IN A UVECTOR + +MFUNCTION UTYPE,SUBR + + ENTRY 1 + + GETYP A,(AB) ;GET U VECTOR + PUSHJ P,SAT + CAIE A,SNWORD + JRST WTYP1 + MOVE B,1(AB) ; GET UVECTOR + PUSHJ P,CUTYPE + JRST FINIS + +CUTYPE: HLRE A,B ;GET -LENGTH + HRRZS B + SUB B,A ;POINT TO TYPE WORD + GETYP A,(B) + JRST ITYPE ; GET NAME OF TYPE + +; FUNCTION TO CHANGE UNIFORM TYPE OF A VECTOR + +MFUNCTION CHUTYPE,SUBR + + ENTRY 2 + + GETYP A,2(AB) ;GET 2D TYPE + CAIE A,TATOM + JRST NOTATO + GETYP A,(AB) ; CALL WITH UVECTOR? + PUSHJ P,SAT + CAIE A,SNWORD + JRST WTYP1 + MOVE A,1(AB) ; GET UV POINTER + MOVE B,3(AB) ;GET ATOM + PUSHJ P,CCHUTY + MOVE A,(AB) ; RETURN UVECTOR + MOVE B,1(AB) + JRST FINIS + +CCHUTY: PUSH TP,$TUVEC + PUSH TP,A + PUSHJ P,TYPLOO ;LOOK IT UP + HRRZ B,(A) ;GET SAT + TRNE B,CHBIT + JRST CANTCH + ANDI B,SATMSK + HLRE C,(TP) ;-LENGTH + HRRZ E,(TP) + SUB E,C ;POINT TO TYPE + GETYP A,(E) ;GET TYPE + JUMPE A,WIN0 ;ALLOW TYPE "LOSE" TO CHANGE TO ANYTHING + PUSHJ P,SAT ;GET SAT + JUMPE A,TYPERR + CAIE A,(B) ;COMPARE + JRST TYPDIF +WIN0: HRLM D,(E) ;CLOBBER NEW ONE + POP TP,B + POP TP,A + POPJ P, + +CANTCH: PUSH TP,$TATOM + PUSH TP,EQUOTE CANT-CHTYPE-INTO + PUSH TP,2(AB) + PUSH TP,3(AB) + MOVEI A,2 + JRST CALER + +NOTATOM: + PUSH TP,$TATOM + PUSH TP,EQUOTE NON-ATOMIC-ARGUMENT + PUSH TP,(AB) + PUSH TP,1(AB) + MOVEI A,2 + JRST CALER + + + +; SUBROUTINE TO LEAVE MUDDLE CLOSING ALL CHANNELS ON THE WAY + +MFUNCTION QUIT,SUBR + + ENTRY 0 + + + PUSHJ P,CLOSAL ; DO THE CLOSES + PUSHJ P,%KILLM + JRST IFALSE ; JUST IN CASE + +CLOSAL: MOVE B,TVP ; POINT TO XFER VECCTOR + ADD B,[CHNL0+2,,CHNL0+2] ; POINT TO 1ST (NOT INCLUDING TTY I/O) + PUSH TP,$TVEC + PUSH TP,B + PUSH P,[N.CHNS-1] ; MAX NO. OF CHANS + +CLOSA1: MOVE B,(TP) + ADD B,[2,,2] + MOVEM B,(TP) + SKIPN C,-1(B) ; THIS ONE OPEN? + JRST CLOSA4 ; NO + CAME C,TTICHN+1(TVP) + CAMN C,TTOCHN+1(TVP) + JRST CLOSA4 + PUSH TP,-2(B) ; PUSH IT + PUSH TP,-1(B) + MCALL 1,FCLOSE ; CLOSE IT +CLOSA4: SOSLE (P) ; COUNT DOWN + JRST CLOSA1 + + + SUB TP,[2,,2] + SUB P,[1,,1] + +CLOSA3: SKIPN B,CHNL0+1(TVP) + POPJ P, + PUSH TP,(B) + HLLZS (TP) + PUSH TP,1(B) + HRRZ B,(B) + MOVEM B,CHNL0+1(TVP) + MCALL 1,FCLOSE + JRST CLOSA3 + +; LITTLE ROUTINES USED ALL OVER THE PLACE + +CRLF: MOVEI A,15 + PUSHJ P,MTYO + MOVEI A,12 + JRST MTYO +MSGTYP: HRLI B,440700 ;MAKE BYTE POINTER +MSGTY1: ILDB A,B ;GET NEXT CHARACTER + JUMPE A,CPOPJ ;NULL ENDS STRING + CAIE A,177 ; DONT PRINT RUBOUTS + PUSHJ P,MTYO" + JRST MSGTY1 ;AND GET NEXT CHARACTER +CPOPJ: POPJ P, + +IMPURE + +WHOAMI: 0 ; SYAYS WHETHER I AM REALLY A MUDDLE OR SOME HACK + + +;GARBAGE COLLECTORS PDLS + + +GCPDL: -GCPLNT,,GCPDL + + BLOCK GCPLNT + + +PURE + +MUDSTR: ASCII /MUDDLE / +STRNG: -1 + -1 + -1 + ASCIZ / IN OPERATION./ + +;MARKED PDLS FOR GC PROCESS + +VECTGO +; DUMMY FRAME FOR INITIALIZER CALLS + + TENTRY,,LISTEN + 0 + .-3 + 0 + 0 + -ITPLNT,,TPBAS-1 + 0 + +TPBAS: BLOCK ITPLNT+PDLBUF + GENERAL + ITPLNT+2+PDLBUF+7,,0 + + +VECRET + + + + +$TMATO: TATOM,,-1 + + +PATCH: +PAT: BLOCK 100 +PATEND: 0 + +END + +TITLE PURE-PAGE LOADER + +RELOCATABLE + +MAPCH==0 ; channel for MAPing +ELN==3 ; Length of table entry + +.GLOBAL PURVEC,PURTOP,PURBOT,P.TOP,MUDSTR,STRTO6,PLOAD,AGC,GCDOWN +.GLOBAL SQUTOA,IGVAL,IBLOCK,PURCLN,MOVPUR,GETPAG,GCFLG,NOSHUF + +.INSRT MUDDLE > + +SYSQ + +IFE ITS,[ +IF1, .INSRT STENEX > +] + +IFN ITS,[ +PURDIR==SIXBIT /MUD50/ ; directory containing pure pages +OPURDI==SIXBIT /MHILIB/ +OFIXDI==SIXBIT /MHILIB/ +FIXDIR==SIXBIT /MUD50/ +ARC==1 ; flag saying fixups on archive +] +IFN ITS,[ +PGMSK==1777 +PGSHFT==10. +] +IFE ITS,[ +PGMSK==777 +PGSHFT==9. +] + +; This routine taskes a slot offset in register A and +; maps in the associated file. It clobbers all ACs +; It skip returns if it wins. + +PLOAD: PUSH P,A ; save slot offset + ADD A,PURVEC+1(TVP) ; point into pure vector + MOVE B,(A) ; get sixbit of name +IFN ITS,[ + MOVE C,MUDSTR+2 ; get version number + PUSHJ P,CSIXBT ; vers # to six bit + HRRI C,(SIXBIT /SAV/) + MOVSS C + .SUSET [.RSNAM,,0] ; GET CURRENT SNAME TO 0 + .SUSET [.SSNAM,,[PURDIR]] ; get sname for it + MOVE A,[SIXBIT / &DSK/] ; build open block + .OPEN MAPCH,A ; try to open file + JRST FIXITU ; no current version, fix one up + PUSH P,0 ; for compat wit tenex and save old sname + DOTCAL FILLEN,[[1000,,MAPCH],[2000,,A]] + JRST MAPLOS + ADDI A,PGMSK ; in case not even # of pages + ASH A,-PGSHFT ; to pages + PUSH P,A ; save the length +] +IFE ITS,[ + MOVE E,P ; save pdl base + PUSH P,[0] ; slots for building strings + PUSH P,[0] + MOVE A,[440700,,1(E)] + MOVE C,[440600,,B] + MOVEI D,6 + ILDB 0,C + JUMPE 0,.+4 ; violate cardinal ".+ rule" + ADDI 0,40 ; to ASCII + IDPB 0,A + SOJG D,.-4 + + PUSH P,[ASCII / SAV/] + MOVE C,MUDSTR+2 ; get ascii of vers no. + IORI C,1 ; hair to change r.o. to space + MOVE 0,C + ADDI C,1 + ANDCM C,0 ; C has 1st 1 + JFFO C,.+3 + MOVEI 0,0 ; use zer name + JRST ZER... + MOVEI C,(D) + IDIVI C,7 + AND 0,MSKS(C) ; get rid of r.o.s +ZER...: PUSH P,0 + MOVEI B,-1(P) ; point to it + HRLI B,260700 + HRROI D,1(E) ; point to name + MOVEI A,1(P) + + PUSH P,[100000,,] + PUSH P,[377777,,377777] + PUSH P,[-1,,[ASCIZ /DSK/]] + PUSH P,[-1,,[ASCIZ /MUDLIB/]] + PUSH P,D + PUSH P,B + PUSH P,[0] + PUSH P,[0] + PUSH P,[0] + MOVEI B,0 + MOVE D,4(E) ; save final version string + GTJFN + JRST FIXITU + + MOVE B,[440000,,240000] + OPENF + JRST FIXITU + MOVE P,E ; flush crap + PUSH P,A + SIZEF ; get length + JRST MAPLOS + PUSH P,C ; save # of pages + MOVEI A,(C) +] + PUSHJ P,ALOPAG ; get the necessary pages + JRST MAPLS1 + PUSH P,B ; save page number +IFN ITS,[ + MOVN A,-1(P) ; get neg count + MOVSI A,(A) ; build aobjn pointer + HRR A,(P) ; get page to start + MOVE B,A ; save for later + HLLZ 0,A ; page pointer for file + DOTCAL CORBLK,[[1000,,200000],[1000,,-1],A,[1000,,MAPCH],0] + JRST MAPLS3 ; total wipe out + .CLOSE MAPCH, ; no need to have file open anymore +] +IFE ITS,[ + MOVE D,-1(P) ; # of pages to D + HRLI B,400000 ; specify this fork + HRROI E,(B) ; build page aobjn for later + TLC E,-1(D) ; sexy way of doing lh + HRLZ A,-2(P) ; JFN to lh of A + MOVSI C,120000 ; bits for read/execute + + PMAP + ADDI A,1 + ADDI B,1 + SOJG D,.-3 ; map 'em all + MOVE A,-2(P) + CLOSF ; try to close file + JFCL ; ignore failure + MOVE B,E +] + +; now try to smash slot in PURVEC + +PLOAD1: MOVE A,PURVEC+1(TVP) ; get pointer to it + ASH B,PGSHFT ; convert to aobjn pointer to words + MOVE C,-3(P) ; get slot offset + ADDI C,(A) ; point to slot + MOVEM B,1(C) ; clobber it in + ANDI B,-1 ; isolate address of page + HRRZ D,PURVEC(TVP) ; get offset into vector for start of chain + TRNE D,400000 ; skip if not end marker + JRST SCHAIN + HRLI D,A ; set up indexed pointer + ADDI D,1 + HRRZ 0,@D ; get its address + JUMPE 0,SCHAIN ; no chain exists, start one + CAILE 0,(B) ; skip if new one should be first + AOJA D,INLOOP ; jump into the loop + + SUBI D,1 ; undo ADDI +FCLOB: MOVE E,-3(P) ; get offset for this guy + HRRM D,2(C) ; link up + HRRM E,PURVEC(TVP) ; store him away + JRST PLOADD + +SCHAIN: MOVEI D,400000 ; get end of chain indicator + JRST FCLOB ; and clobber it in + +INLOOP: MOVE E,D ; save in case of later link up + HRR D,@D ; point to next table entry + TRNE D,400000 ; 400000 is the end of chain bit + JRST SLFOUN ; found a slot, leave loop + ADDI D,1 ; point to address of progs + HRRZ 0,@D ; get address of block + CAILE 0,(B) ; skip if still haven't fit it in + AOJA D,INLOOP ; back to loop start and point to chain link + SUBI D,1 ; point back to start of slot + +SLFOUN: MOVE 0,-3(P) ; get offset into vector of this guy + HRRM 0,@E ; make previous point to us + HRRM D,2(C) ; link it in + + +PLOADD: AOS -4(P) ; skip return + +MAPLS3: SUB P,[1,,1] ; flush stack crap +MAPLS1: SUB P,[1,,1] +MAPLOS: +IFN ITS,[ + MOVE 0,(P) + .SUSET [.SSNAM,,0] ; restore SNAME +] + SUB P,[2,,2] + POPJ P, + +; Here if no current version exists + +FIXITU: PUSH TP,$TFIX + PUSH TP,0 ; maybe save sname + +IFN ITS,[ + PUSH P,C ; save final name + MOVE C,[SIXBIT /FIXUP/] ; name of fixup file +IFN ,.SUSET [.SSNAM,,[OFIXDI]] +IFN ARC, HRRI A,(SIXBIT /ARC/) + .OPEN MAPCH,A +IFE ARC, JRST MAPLOS +IFN ARC, PUSHJ P,ARCLOS + MOVE 0,[-2,,A] ; prepare to read version and length + PUSH P,B ; save program name + .IOT MAPCH,0 + SKIPGE 0 + FATAL BAD FIXUP FILE + PUSH P,B ; save version number of fixup file + MOVEI A,-2(A) ; length -2 (for vers and length) + PUSHJ P,IBLOCK ; get a UVECTOR for the fixups + PUSH TP,$TUVEC ; and save + PUSH TP,B + MOVE A,B + MOVSI 0,TUVEC + MOVEM 0,ASTO(PVP) ; prepare for moby iot (interruptable) + ENABLE + .IOT MAPCH,A ; get fixups + DISABLE + .CLOSE MAPCH, + SETZM ASTO(PVP) + POP P,A ; restore version number + IDIVI A,100. ; get 100s digit in a rest in B + ADDI A,20 ; convert to sixbit + IDIVI B,10. ; B tens digit C 1s digit + ADDI B,20 + ADDI C,20 + MOVE 0,[220600,,D] + MOVSI D,(SIXBIT /SAV/) + CAIE A,20 + IDPB A,0 + CAIE B,20 + IDPB B,0 + IDPB C,0 + MOVE B,[SIXBIT / &DSK/] + MOVE C,(P) ; program name +IFN ,.SUSET [.SSNAM,,[OPURDI]] + .OPEN MAPCH,B ; try for this one + JRST MAPLS1 + DOTCAL FILLEN,[[1000,,MAPCH],[2000,,A]] + JRST MAPLS1 + ADDI A,PGMSK ; in case not exact pages + ASH A,-PGSHFT ; to pages + PUSH P,A ; save + PUSHJ P,ALOPAG ; find some pages + JRST MAPLS4 + MOVN A,(P) ; build aobjn pointer + MOVSI A,(A) + HRRI A,(B) + MOVE B,A + HLLZ 0,B + DOTCAL CORBLK,[[1000,,104000],[1000,,-1],A,[1000,,MAPCH],0] + JRST MAPLS4 + SUB P,[1,,1] + .CLOSE MAPCH, +] +IFE ITS,[ + PUSH TP,$TPDL ; save stack pointer + PUSH TP,E + PUSH P,D ; save vers string + HRROI A,[ASCIZ /FIXUP/] + MOVEM A,10.(E) ; into name slot + MOVEI A,5(E) ; point to arg block + SETZB B,C + GTJFN + JRST MAPLS4 + MOVEI C,(A) ; save JFN in case OPNEF loses + MOVE B,[440000,,200000] + OPENF + JRST MAPLS4 + BIN ; length of fixups to B + PUSH P,A ; save JFN + MOVEI A,-2(B) ; length of uvextor to get + PUSHJ P,IBLOCK + PUSH TP,$TUVEC + PUSH TP,B ; sav it + POP P,A ; restore JFN + BIN ; read in vers # + MOVE D,B ; save vers # + MOVE B,(TP) + HLRE C,B + HRLI B,444400 + SIN ; read in entire fixups + CLOSF ; and close file of same + JFCL ; ignore cailure to close + HRROI C,1(E) ; point to name + MOVEM C,9.(E) + MOVEI C,3(E) + HRLI C,260700 + MOVEM C,10.(E) + MOVE 0,[ASCII / /] + MOVEM 0,4(E) ; all spaces + MOVEI A,(D) + IDIVI A,100. ; to ascii + ADDI A,60 + IDIVI B,10. + ADDI B,60 + ADDI C,60 + MOVE 0,[440700,,4(E)] + CAIE A,60 + IDPB A,0 + CAIE B,60 + IDPB B,0 + IDPB C,0 + SETZB C,B + MOVEI A,5(E) ; ready for 'nother GTJFN + GTJFN + JRST MAPLS5 + MOVEI C,(A) ; save JFN in case OPENF loses + MOVE B,[440000,,240000] + OPENF + JRST MAPLS5 + SIZEF + JRST MAPLS5 + PUSH P,A + PUSH P,C + MOVEI A,(C) + PUSHJ P,ALOPAG ; get the pages + JRST MAPLS5 + MOVEI D,(B) ; save pointer + MOVN A,(P) ; build page aobjn pntr + HRLI D,(A) + EXCH D,(P) ; get length + HRLI B,400000 + + HRLZ A,-1(P) ; JFN for PMAP + MOVSI C,120400 ; bits for read/execute/copy-on-write + + PMAP + ADDI A,1 + ADDI B,1 + SOJG D,.-3 + + HLRZS A + CLOSF + JFCL + POP P,B ; restore page # + SUB P,[1,,1] +] +; now to do fixups + + MOVE A,(TP) ; pointer to them + ASH B,PGSHFT ; aobjn to program + +FIX1: SKIPL E,(A) ; read one hopefully squoze + FATAL ATTEMPT TO TYPE FIX PURE + TLZ E,740000 + PUSHJ P,SQUTOA ; look it up + FATAL BAD FIXUPS + + AOBJP A,FIX2 + HLRZ D,(A) ; get old value + SUBM E,D ; D is diff between old and new + HRLM E,(A) ; fixup the fixups + MOVEI 0,0 ; flag for which half +FIX4: JUMPE 0,FIXRH ; jump if getting rh + MOVEI 0,0 ; next time will get rh + AOBJP A,FIX2 ; done? + HLRZ C,(A) ; get lh + JUMPE C,FIX3 ; 0 terminates +FIX5: ADDI C,(B) ; access the code + ADDM D,-1(C) ; and fix it up + JRST FIX4 + +FIXRH: MOVEI 0,1 ; change flag + HRRZ C,(A) ; get it and + JUMPN C,FIX5 + +FIX3: AOBJN A,FIX1 ; do next one + +FIX2: +IFN ITS,[ +IFN .SUSET [.SSNAM,,[PURDIR]] + .OPEN MAPCH,[SIXBIT / 'DSK_PURE_>/] + JRST MAPLS1 + MOVE E,B ; save pointer + ASH E,-PGSHFT ; to page AOBJN + .IOT MAPCH,B ; write out the goodie + SETZB 0,A + MOVEI B,MAPCH + MOVE C,(P) + MOVE D,-1(P) + .FDELE 0 ; attempt to rename to right thing + JRST MAPLS1 + .CLOSE MAPCH, + MOVE B,[SIXBIT / &DSK/] + .OPEN MAPCH,B + FATAL WHERE DID THE FILE GO? + HLLZ 0,E ; pointer to file pages + PUSH P,E ; SAVE FOR END + DOTCAL CORBLK,[[1000,,200000],[1000,,-1],E,[1000,,MAPCH],0] + FATAL LOSSAGE LOSSAGE PAGES LOST + .CLOSE MAPCH, + + SKIPGE MUDSTR+2 ; skip if not experimental + JRST NOFIXO + PUSHJ P,GENVN ; get version number as a number + MOVE E,(TP) +IFN ,.SUSET [.SSNAM,,[FIXDIR]] +IFE ARC, .OPEN MAPCH,[SIXBIT / 'DSK_FIXU_>/] +IFN ARC, .OPEN MAPCH,[SIXBIT / 'ARC_FIXU_>/] +IFE ARC, FATAL CANT WRITE FIXUPS +IFN ARC, PUSHJ P,ARCFAT + HLRE A,E ; get length + MOVNS A + ADDI A,2 ; account for these 2 words + MOVE 0,[-2,,A] ; write version and length + .IOT MAPCH,0 + .IOT MAPCH,E ; out go the fixups + SETZB 0,A + MOVEI B,MAPCH + MOVE C,-1(P) + MOVE D,[SIXBIT /FIXUP/] + .FDELE 0 + FATAL FIXUP WRITE OUT FAILED + .CLOSE MAPCH, +NOFIXO: +] +IFE ITS,[ + MOVE E,-2(TP) ; restore P-stack base + MOVEI 0,600000 ; fixup args to GTJFN + HRLM 0,5(E) + MOVE D,B ; save page number + POP P,4(E) ; current version name in + MOVEI A,5(E) ; pointer ro arg block + MOVEI B,0 + GTJFN + FATAL MAP FIXUP LOSSAGE + MOVE B,[440000,,100000] + OPENF + FATAL MAP FIXUP LOSSAGE + MOVEI B,(D) ; ready to write it out + HRLI B,444400 + HLRE C,D + SOUT ; zap it out + TLO A,400000 ; dont recycle the JFN + CLOSF + JFCL + ANDI A,-1 ; kill sign bit + MOVE B,[440000,,240000] + OPENF + FATAL MAP FIXUP LOSSAGE + MOVE B,D + ASH B,-PGSHFT ; aobjn to pages + PUSH P,B + HLRE D,B ; -count + HRLI B,400000 + MOVSI A,(A) + MOVSI C,120000 + + PMAP + ADDI A,1 + ADDI B,1 + AOJL D,.-3 + + HLRZS A + CLOSF + JFCL + + HRROI 0,[ASCIZ /FIXUP/] ; now write out new fixup file + MOVEM 0,10.(E) + MOVEI A,5(E) + MOVEI B,0 + + SKIPGE MUDSTR+2 + JRST NOFIXO ; exp vers, dont write out + + PUSHJ P,GENVN + MOVEI D,(B) ; save vers in D + GTJFN + FATAL MAP FIXUP LOSSAGE + MOVE B,[440000,,100000] + OPENF + FATAL MAP FIXUP LOSSAGE + HLRE B,(TP) ; length of fixup vector + MOVNS B + ADDI B,2 ; for length and version words + BOUT + MOVE B,D ; and vers # + BOUT + MOVSI B,444400 ; byte pointer to fixups + HRR B,(TP) + HLRE C,(TP) + SOUT + CLOSF + JFCL +NOFIXO: MOVE A,(P) ; save aobjn to pages + MOVE P,-2(TP) + SUB TP,[2,,2] + PUSH P,A +] + HRRZ A,(P) ; get page # + HLRE C,(P) ; and # of same + MOVE B,(P) ; set B up for return + MOVNS C +IFN ITS,[ + SUB P,[2,,2] + MOVE 0,-2(TP) ; saved sname + MOVEM 0,(P) +] + PUSH P,C + PUSH P,A + SUB TP,[4,,4] + JRST PLOAD1 + +IFN ITS,[ +MAPLS4: .CLOSE MAPCH, + SUB P,[1,,1] + JRST MAPLS1 +] +IFE ITS,[ +MAPLS4: SKIPA A,[4,,4] +MAPLS5: MOVE A,[6,,6] + MOVE P,E + SUB TP,A + SKIPE A,C + CLOSF + JFCL + JRST MAPLOS +] + +IFN ITS,[ +IFN ARC,[ +ARCLOS: PUSHJ P,CKLOCK + JRST MAPLS1 + +ARCRTR: SOS (P) + SOS (P) + POPJ P, + +ARCFAT: PUSHJ P,CKLOCK + FATAL CANT WRITE FIXUP FILE + JRST ARCRTR + +CKLOCK: PUSH P,0 + .STATUS MAPCH,0 + LDB 0,[220600,,0] + CAIN 0,23 ; file locked? + JRST WAIT ; wait and retry + POP P,0 + POPJ P, + +WAIT: MOVEI 0,1 + .SLEEP 0, + POP P,0 + AOS (P) + POPJ P, +] +] + +; Here to try to get a free page block for new thing +; A/ # of pages to get + +ALOPAG: PUSHJ P,GETPAG ; try to get enough pages + POPJ P, + AOS (P) ; won skip return + MOVEI 0,(B) ; update PURBOT/PURTOP to reflect current state + ASH 0,PGSHFT + MOVEM 0,PURBOT + POPJ P, + +GETPAG: MOVE C,P.TOP ; top of GC space + ASH C,-PGSHFT ; to page number + MOVE B,PURBOT ; current bottom of pure space + ASH B,-PGSHFT ; also to pages + SUBM B,C ; pages available ==> C + CAIGE C,(A) ; skip if have enough already + JRST GETPG1 ; no, try to shuffle around + SUBI B,(A) ; B/ first new page + AOS (P) + POPJ P, ; return with new free page in B + +; Here if shuffle must occur or gc must be done to make room + +GETPG1: MOVEI 0,0 + SKIPE NOSHUF ; if can't shuffle, then ask gc + JRST ASKAGC + MOVE 0,PURTOP ; get top of mapped pure area + SUB 0,P.TOP ; total free words to 0 + ASH 0,-PGSHFT ; to pages + CAIGE 0,(A) ; skip if winnage possible + JRST ASKAGC ; please AGC give me some room!! + SUBM A,C ; C/ amount we must flush to make room + +; Here to find pages for flush using LRU algorithm + +GL1: MOVE B,PURVEC+1(TVP) ; get pointer to pure sr vector + MOVEI 0,-1 ; get very large age + +GL2: SKIPN 1(B) ; skip if not already flushed + JRST GL3 + HLRZ D,2(B) ; get this ones age + CAMLE D,0 ; skip if this is a candidate + JRST GL3 + MOVE E,B ; point to table entry with E + MOVEI 0,(D) ; and use as current best +GL3: ADD B,[ELN,,ELN] ; look at next + JUMPL B,GL2 + + HLRE B,1(E) ; get length of flushee + ASH B,-PGSHFT ; to negative # of pages + ADD C,B ; update amount needed + SETZM 1(E) ; indicate it will be gone + JUMPG C,GL1 ; jump if more to get + +; Now compact pure space + + PUSH P,A ; need all acs + SETZB E,A + HRRZ D,PURVEC(TVP) ; point to first in core addr order + HRRZ C,PURTOP ; get destination page + ASH C,-PGSHFT ; to page number + +CL1: ADD D,PURVEC+1(TVP) ; to real pointer + SKIPE 1(D) ; skip if this one is a flushee + JRST CL2 + + HRRZ D,2(D) ; point to next one in chain + JUMPN E,CL3 ; jump if not first one + HRRM D,PURVEC(TVP) ; and use its next as first + JRST CL4 + +CL3: HRRM D,2(E) ; link up + JRST CL4 + +; Found a stayer, move it if necessary + +CL2: MOVEI E,(D) ; another pointer to slot + HLRE B,1(D) ; - length of block + HRRZ D,1(D) ; pointer to block + SUB D,B ; point to top of block + ASH D,-PGSHFT ; to page number + CAIN D,(C) ; if not moving, jump + JRST CL6 + + ASH B,-PGSHFT ; to pages +IFN ITS,[ +CL5: SUBI C,1 ; move to pointer and from pointer + SUBI D,1 + DOTCAL CORBLK,[[1000,,200000],[1000,,-1],C,[1000,,-1],D] + FATAL PURE SHUFFLE LOSSAGE + AOJL B,CL5 ; count down +] +IFE ITS,[ + PUSH P,B ; save # of pages + MOVEI A,-1(D) ; copy from pointer + HRLI A,400000 ; get this fork code + RMAP ; get a JFN (hopefully) + EXCH D,(P) ; D # of pages (save from) + ADDM D,(P) ; update from + MOVEI B,-1(C) ; to pointer in B + HRLI B,400000 + MOVSI C,120000 ; read/execute modes + + PMAP ; move a page + SUBI A,1 + SUBI B,1 + AOJL D,.-3 ; move them all + + MOVEI C,1(B) + POP P,D + ADDI D,1 +] +; Update the table address for this loser + + SUBM C,D ; compute offset (in pages) + ASH D,PGSHFT ; to words + ADDM D,1(E) ; update it +CL7: HRRZ D,2(E) ; chain on +CL4: TRNN D,400000 ; skip if end of chain + JRST CL1 + + ASH C,PGSHFT ; to words + MOVEM C,PURBOT ; reset pur bottom + POP P,A + JRST GETPAG + +CL6: HRRZ C,1(E) ; get new top of world + ASH C,-PGSHFT ; to page # + JRST CL7 + +; SUBR to create an entry in the vector for one of these guys + +MFUNCTION PCODE,SUBR + + ENTRY 2 + + GETYP 0,(AB) ; check 1st arg is string + CAIE 0,TCHSTR + JRST WTYP1 + GETYP 0,2(AB) ; second must be fix + CAIE 0,TFIX + JRST WTYP2 + + MOVE A,(AB) ; convert name of program to sixbit + MOVE B,1(AB) + PUSHJ P,STRTO6 +PCODE4: MOVE C,(P) ; get name in sixbit + +; Now look for either this one or an empty slot + + MOVEI E,0 + MOVE B,PURVEC+1(TVP) + +PCODE2: CAMN C,(B) ; skip if this is not it + JRST PCODE1 ; found it, drop out of loop + JUMPN E,.+3 ; dont record another empty if have one + SKIPN (B) ; skip if slot filled + MOVE E,B ; remember pointer + ADD B,[ELN,,ELN] + JUMPL B,PCODE2 ; jump if more to look at + + JUMPE E,PCODE3 ; if E=0, error no room + MOVEM C,(E) ; else stash away name and zero rest + SETZM 1(E) + SETZM 2(E) + JRST .+2 + +PCODE1: MOVE E,B ; build ,, + MOVEI 0,0 ; flag whether new slot + SKIPE 1(E) ; skip if mapped already + MOVEI 0,1 + MOVE B,3(AB) + HLRE D,E + HLRE E,PURVEC+1(TVP) + SUB D,E + HRLI B,(D) + MOVSI A,TPCODE + SKIPN NOSHUF ; skip if not shuffling + JRST FINIS + JUMPN 0,FINIS ; jump if winner + PUSH TP,A + PUSH TP,B + HLRZ A,B + PUSHJ P,PLOAD + JRST PCOERR + POP TP,B + POP TP,A + JRST FINIS + +PCOERR: PUSH TP,$TATOM + PUSH TP,EQUOTE PURE-LOAD-FAILURE + JRST CALER1 + + +PCODE3: HLRE A,PURVEC+1(TVP) ; get current length + MOVNS A + ADDI A,10*ELN ; add 10(8) more entry slots + PUSHJ P,IBLOCK + EXCH B,PURVEC+1(TVP) ; store new one and get old + HLRE A,B ; -old length to A + MOVSI B,(B) ; start making BLT pointer + HRR B,PURVEC+1(TVP) + SUBM B,A ; final dest to A + BLT B,-1(A) + JRST PCODE4 + +; Here if must try to GC for some more core + +ASKAGC: SKIPE GCFLG ; if already in GC, lose + POPJ P, + SUBM A,0 ; amount required to 0 + ASH 0,PGSHFT ; TO WORDS + MOVEM 0,GCDOWN ; pass as funny arg to AGC + EXCH A,C ; save A from gc's destruction +IFN ITS, .IOPUSH MAPCH, ; gc uses same channel + PUSH P,C + MOVE C,[8,,9.] ; SET UP INDICATORS FOR GC + PUSHJ P,AGC + POP P,C +IFN ITS, .IOPOP MAPCH, + EXCH C,A + JUMPGE C,GETPAG + PUSH TP,$TATOM + PUSH TP,EQUOTE NO-MORE-PAGES + AOJA TB,CALER1 + +; Here to clean up pure space by flushing all shared stuff + +PURCLN: SKIPE NOSHUF + POPJ P, + MOVEI B,400000 + HRRM B,PURVEC(TVP) ; flush chain pointer + MOVE B,PURVEC+1(TVP) ; get pointer to table + SETZM 1(B) ; zero pointer entry + SETZM 2(B) ; zero link and age slots + ADD B,[ELN,,ELN] ; go to next slot + JUMPL B,.-3 ; do til exhausted + MOVE B,PURBOT ; now return pages + SUB B,PURTOP ; compute page AOBJN pointer + JUMPE B,CPOPJ ; no pure pages? + MOVSI B,(B) + HRR B,PURBOT + ASH B,-PGSHFT +IFN ITS,[ + DOTCAL CORBLK,[[1000,,0],[1000,,-1],B] + FATAL SYSTEM WONT TAKE CORE BACK? +] +IFE ITS,[ + HLRE D,B ; - # of pges to flush + HRLI B,400000 ; specify hacking hom fork + MOVNI A,1 + + PMAP + ADDI B,1 + AOJL D,.-2 +] + MOVE B,PURTOP ; now fix up pointers + MOVEM B,PURBOT ; to indicate no pure +CPOPJ: POPJ P, + +; Here to move the entire pure space. +; A/ # and direction of pages to move (+ ==> up) + +MOVPUR: SKIPE NOSHUF + FATAL CANT MOVE PURE SPACE AROUND + IFE ITS [ASH A,1] + SKIPN B,A ; zero movement, ignore call + POPJ P, + + ASH B,PGSHFT ; convert to words for pointer update + MOVE C,PURVEC+1(TVP) ; loop through updating non-zero entries + SKIPE 1(C) + ADDM B,1(C) + ADD C,[ELN,,ELN] + JUMPL C,.-3 + + MOVE C,PURTOP ; found pages at top and bottom of pure + ASH C,-PGSHFT + MOVE D,PURBOT + ASH D,-PGSHFT + ADDM B,PURTOP ; update to new boundaries + ADDM B,PURBOT + CAIN C,(D) ; differ? + POPJ P, + JUMPG A,PUP ; if moving up, go do separate CORBLKs + +IFN ITS,[ + SUBM D,C ; -size of area to C (in pages) + MOVEI E,(D) ; build pointer to bottom of destination + ADD E,A + HRLI E,(C) + HRLI D,(C) + DOTCAL CORBLK,[[1000,,200000],[1000,,-1],E,[1000,,-1],D] + FATAL CANT MOVE PURE + POPJ P, + +PUP: SUBM C,D ; pages to move to D + ADDI A,(C) ; point to new top + +PUPL: SUBI C,1 + SUBI A,1 + DOTCAL CORBLK,[[1000,,200000],[1000,,-1],A,[1000,,-1],C] + FATAL CANT MOVE PURE + SOJG D,PUPL + POPJ P, +] +IFE ITS,[ + SUBM D,C ; pages to move to D + MOVSI E,(C) ; build aobjn pointer + HRRI E,(D) ; point to lowest + ADD D,A ; D==> new lowest page +PURCL1: MOVSI A,400000 ; specify here + HRRI A,(E) ; get a page + RMAP ; get a real handle on it + MOVE B,D ; where to go + HRLI B,400000 + MOVSI C,120000 + PMAP + ADDI D,1 + AOBJN E,PURCL1 + POPJ P, + +PUP: SUB D,C ; - count to D + MOVSI E,(D) ; start building AOBJN + HRRI E,(C) ; aobjn to top + ADD C,A ; C==> new top + MOVE D,C + +PUPL: MOVSI A,400000 + HRRI A,(E) + RMAP ; get real handle + MOVE B,D + HRLI B,400000 + MOVSI C,120000 + PMAP + SUBI E,2 + SUBI D,1 + AOBJN E,PUPL + + POPJ P, +] +IFN ITS,[ +CSIXBT: MOVEI 0,5 + PUSH P,[440700,,C] + PUSH P,[440600,,D] + MOVEI D,0 +CSXB2: ILDB E,-1(P) + CAIN E,177 + JRST CSXB1 + SUBI E,40 + IDPB E,(P) + SOJG 0,CSXB2 +CSXB1: SUB P,[2,,2] + MOVE C,D + POPJ P, +] +GENVN: MOVE C,[440700,,MUDSTR+2] + MOVEI D,5 + MOVEI B,0 +VNGEN: ILDB 0,C + CAIN 0,177 + POPJ P, + IMULI B,10. + SUBI 0,60 + ADD B,0 + SOJG D,VNGEN + POPJ P, + +IFE ITS,[ +MSKS: 774000,,0 + 777760,,0 + 777777,,700000 + 777777,,777400 + 777777,,777776 +] +END + +TITLE MAPS -- MAP FUNCTIONS FOR MUDDLE + +RELOCATABLE + +.INSRT MUDDLE > + +.GLOBAL TYPSEG,NXTLM,NAPT,APLQ,INCR1,SPECBI,FRMSTK,MAPPLY +.GLOBAL CHFSWP,SSPEC1,ILVAL,CHUNW + +; PSTACK OFFSETS + +INCNT==0 ; INNER LOOP COUNT +LISTNO==-1 ; ARG NUMBER BEING HACKED +ARGCNT==-2 ; FINAL ARG COUNTER +NARGS==-3 ; NUMBER OF STRUCTURES +NTHRST==-4 ; 0=> MAP REST, OTHERWISE MAP FIRST + +; MAP THE "CAR" OF EACH LIST + +MFUNCTION MAPF,SUBR + + PUSH P,. ; PUSH NON-ZERO + JRST MAP1 + +; MAP THE "CDR" OF EACH LIST + +MFUNCTION MAPR,SUBR + + PUSH P,[0] + +MAP1: ENTRY + HLRE C,AB ; HOW MANY ARGS + ASH C,-1 ; TO # OF PAIRS + ADDI C,3 ; AT LEAST 3 + JUMPG C,TFA ; NOT ENOUGH + GETYP A,(AB) ; TYPE OF CONSTRUCTOR + CAIN A,TFALSE ; ANY CONSING NEEDE? + JRST MAP2 ; NO, SKIP CHECK + PUSHJ P,APLQ ; CHECK IF APPLICABLE + JRST NAPT ; NO, ERROR +MAP2: MOVNS C ; POS NO. OF ARGS (-3) + ADDI C,1 ; C/ NOW # OF LISTS... + PUSH P,C ; SAVE IT + PUSH TP,[TATOM,,-1] ; ALL **GFP** INSTRUCTIONS ARE TO DO WITH MAPRET + PUSH TP,MQUOTE LMAP,[LMAP ]INTRUP + PUSHJ P,FRMSTK ; **GFP** + PUSH TP,[0] ; **GFP** + PUSH TP,[0] ; **GFP** + PUSHJ P,SPECBIND ; **GFP** + MOVE C,(P) ; RESTORE COUNT OF ARGS + MOVE A,AB ; COPY ARG POINTER + MOVSI 0,TAB ; CLOBBER A'S TYPE + MOVEM 0,ASTO(PVP) + +ARGLP: INTGO ; STACK MAY OVERFLOW + PUSH TP,4(A) ; SKIP FCNS + PUSH TP,5(A) + ADD A,[2,,2] + SOJG C,ARGLP ; ALL UP ON STACK + +; ALL STRUCTURES ARE ON THE STACK, NOW PUSH THE CONSTRUCTOR + + PUSH TP,(AB) ; CONSTRUCTOR + PUSH TP,1(AB) + SETZM ASTO(PVP) + PUSH P,[-1] ; FUNNY TEMPS + PUSH P,[0] + PUSH P,[0] + +; OUTER LOOP CDRING EACH STRUCTURE + +OUTRLP: SETZM LISTNO(P) ; START AT 0TH LIST + MOVE 0,NARGS(P) ; TOTAL # OF STRUCS + MOVEM 0,INCNT(P) ; AS COUNTER IN INNER LOOP + PUSH TP,2(AB) ; PUSH THE APPLIER + PUSH TP,3(AB) + +; INNER LOOP, CONS UP EACH APPLICATION + +INRLP: INTGO + MOVEI E,2 ; READY TO BUMP LISTNO + ADDB E,LISTNO(P) ; CURRENT STORED AND IN C + ADDI E,(TB)4 ; POINT TO A STRUCTURE + MOVE A,(E) ; PICK IT UP + MOVE B,1(E) ; AND VAL + PUSHJ P,TYPSEG ; SETUP TO REST IT ETC. + SKIPL ARGCNT(P) ; DONT INCR THE 1ST TIME + XCT INCR1(C) ; INCREMENT THE LOSER + MOVE 0,DSTO(PVP) ; UPDATE THE LIST + MOVEM 0,(E) + MOVEM D,1(E) ; CLOBBER AWAY + PUSH TP,DSTO(PVP) ; FOR REST CASE + PUSH TP,D + PUSHJ P,NXTLM ; SKIP IF GOT ONE, ELSE DONT + JRST DONEIT ; FINISHED + SETZM DSTO(PVP) + SKIPN NTHRST(P) ; SKIP IF MAP REST + JRST INRLP1 + MOVEM A,-1(TP) ; IUSE AS ARG + MOVEM B,(TP) +INRLP1: SOSE INCNT(P) ; COUNT ARGS + JRST INRLP ; MORE, GO DO THEM + + +; ALL ARGS PUSHED, APPLY USER FCN + + SKIPGE ARGCNT(P) ; UN NEGATE ARGCNT + SETZM ARGCNT(P) + MOVE A,NARGS(P) ; GET # OF ARGS + ADDI A,1 + ACALL A,MAPPLY ; APPLY THE BAG BITER + + GETYP 0,(AB) ; GET TYPE OF CONSTRUCTOR + CAIN 0,TFALSE ; SKIP IF ONE IS THERE + JRST OUTRL1 + PUSH TP,A + PUSH TP,B + AOS ARGCNT(P) + JRST OUTRLP + +OUTRL1: MOVEM A,-1(TP) ; SAVE PARTIAL VALUE + MOVEM B,(TP) + JRST OUTRLP + +; HERE IF ALL FINISHED + +DONEIT: HRLS C,LISTNO(P) ; HOW MANY DONE + SUB TP,[2,,2] ; FLUSH SAVED VAL + SUB TP,C ; FLUSH TUPLE OF CRUFT +DONEI1: SKIPGE ARGCNT(P) + SETZM ARGCNT(P) ; IN CASE STILL NEGATIVE + SETZM DSTO(PVP) ; UNSCREW + GETYP 0,(AB) ; ANY CONSTRUCTOR + CAIN 0,TFALSE + JRST MFINIS ; NO, LEAVE + AOS D,ARGCNT(P) ; IF NO ARGS + ACALL D,APPLY ; APPLY IT + + JRST FINIS + +; HERE TO FINISH IF CONSTRUCTOR WAS #FALSE () + +MFINIS: POP TP,B + POP TP,A + JRST FINIS + +; **GFP** FROM HERE TO THE END + +MFUNCTION MAPLEAVE,SUBR + + ENTRY + + CAMGE AB,[-3,,0] + JRST TMA + MOVE B,MQUOTE LMAP,[LMAP ]INTRUP + PUSHJ P,ILVAL + GETYP 0,A + CAIE 0,TFRAME ; MAKE SURE WINNER + JRST NOTM + PUSH TP,A + PUSH TP,B + MOVEI B,-1(TP) ; POINT TO FRAME POINTER + PUSHJ P,CHFSWP + PUSHJ P,CHUNW + JUMPL C,MAPL1 ; RET VAL SUPPLIED + MOVSI A,TATOM + MOVE B,MQUOTE T + JRST FINIS + +MAPL1: MOVE A,(C) + MOVE B,1(C) + JRST FINIS + +MFUNCTION MAPSTOP,SUBR + + ENTRY + + PUSH P,[1] + JRST MAPREC + +MFUNCTION MAPRET,SUBR + + ENTRY + + PUSH P,[0] +MAPREC: MOVE B,MQUOTE LMAP,[LMAP ]INTRUP + PUSHJ P,ILVAL ; GET VALUE + GETYP 0,A ; FRAME? + CAIE 0,TFRAME + JRST NOTM + PUSH TP,A + PUSH TP,B + MOVEI B,-1(TP) + POP P,0 ; RET/STOP SWITCH + JUMPN 0,MAPRC1 ; JUMP IF STOP + PUSHJ P,CHFSWP ; CHECK IT OUT (AND MAYBE SWAP) + PUSH P,[NLOCR] + JRST MAPRC2 +MAPRC1: PUSHJ P,CHFSWP + PUSH P,[NLOCR1] +MAPRC2: HRRZ E,SPSAV(B) ; UNBIND BEFORE RETURN + PUSH TP,$TAB + PUSH TP,C + ADDI E,1 ; FUDGE FOR UNBINDER + PUSHJ P,SSPEC1 ; UNBINDER + HLRE D,(TP) ; FIND NUMBER + JUMPE D,MAPRE1 ; SKIP IF NONE TO MOVE + MOVNS E,D ; AND PLUS IT + HRLI E,(E) ; COMPUTE NEW TP + ADD E,TPSAV(B) ; NEW TP + HRRZ C,TPSAV(B) ; GET OLD TOP + MOVEM E,TPSAV(B) + HRL C,(TP) ; AND NEW BOT + ADDI C,1 + BLT C,(E) ; BRING IT ALL DOWN +MAPRE1: ASH D,-1 ; NO OF ARGS + HRRI TB,(B) ; PREPARE TO FINIS + MOVSI A,TFIX + MOVEI B,(D) + POP P,0 ; GET PC TO GO TO + MOVEM 0,PCSAV(TB) + JRST CONTIN ; BACK TO MAPPER + +NLOCR1: TDZA A,A ; ZER SW +NLOCR: MOVEI A,1 + GETYP 0,(AB) ; CHECK IF BUILDING + CAIN 0,TFALSE + JRST FLUSHM ; REMOVE GOODIES + ADDM B,ARGCNT(P) ; BUMP ARG COUNTER +NLOCR2: JUMPE A,DONEI1 + JRST OUTRLP + +FLUSHM: ASH B,1 ; FLUSH GOODIES DROPPED + HRLI B,(B) + SUB TP,B + JRST NLOCR2 + +NOTM: PUSH TP,$TATOM + PUSH TP,EQUOTE NOT-IN-MAP-FUNCTION + JRST CALER1 + +END + ; THE FOLLOWING INFORMATION IS MEANT AS GUIDE TO THE CARE AND FEEDING +; OF MUDDLE. IT ATTEMPTS TO SPECIFY PROGRAMMING CONVENTIONS AND +; SUPPLY SYMBOLS AND MACROS NEEDED BY ALL MODULES IN A MUDDLE. + +; FOR EFFICIENCY THE STANDARD MODE OF RUNNING IS UNINTERRUPTABLE. +; WITH EXPLICIT CHECKS FOR PENDING INTERRUPTS. THE INTGO MACRO +; PERFORMS THE APPROPRIATE CHECK + +; FOR INTERRUPTS TO WORK IN INTERRUPTABLE CODE, IT MUST +; BE ABSOLUTELY PURE. BETWEEN ANY TWO INSTRUCTIONS OF +; INTERRUPTABLE CODE THERE MAY BE AN INTERUPT IN WHICH +; A COMPACTING GARBAGE COLLECTION MAY OCCUR. +; NOTE: A SCRATCH AC MAY CONTAIN POINTERS TO GC SPACE IN +; INTERRUPTABLE CODE OR DURING AN INTGO IF THE TYPE CODE FOR THAT AC'S +; SLOT IN THE PROCESS VECTOR IS SET TO REFLECT ITS CONTENTS. + +; ALL ATOM POINTERS WILL BE REFERRED TO IN ASSEMBLED CODE BY +; MQUOTE -- FOR NORMAL ATOMS +; EQUOTE -- FOR ERROR COMMENT ATOMS + +; FUNCTION CALLS TO INITIAL FUNCTIONS WILL BE CALLED USING THE FOLLOWING: + +; MCALL N, ;SEE MCALL MACRO +; ACALL AC, ; SEE ACALL MACRO + +; UNLESS PNAME IS NOT A VALID MIDAS SYMBOL, IN WHICH CASE ANOTHER INTERNAL +; NAME WILL BE USED + +; WHEN CALLING A SUBR THROUGH AN INDEX OR INDIRECT, THE UUOS GENERATED +; BY THE MACROS SHOULLD BE USED. +; THESE ARE .MCALL AND .ACALL -- EXAMPLE: +; .ACALL A,@(B) + + + + + + ; ORGANIZATION OF CORE STORAGE IN THE MUDDLE SYSTEM (ENVIRONMENT) + +; 20: SPECIAL CODE FOR UUO AND INTERUPTS + +;CODBOT: WORD CONTAINING LOCATION OF BOTTOMMOST WORD OF IMPURE CODE + +; --IMPURE CODE-- + +;CODTOP: WORD CONTAINING LOCATION OFWORD AFTER LAST WORD OF CODE + +;PARBOT: WORD CONTAINING LOCATION OFBOTTOMMOST LIST + +; --PAIRSS-- + +;PARTOP: WORD CONTAINING LOCATION OFWORD AFTER LAST PAIR WORD + +;VECBOT: WORD CONTAINING LOCATION OFFIRST WORD OF VECTORS + +; --VECTORS-- + +;VECTOP: WORD CONTAINING LOCATION OFWORD AFTER TOPMOST VECTOR +; THE WORD BEFORE VECTOP IS THE DOPE FOR THE LAST VECTOR + +; --GC MARK PDL (SOMETIMES NOT THERE)-- + +;CORTOP: TOP OF LOW-SEGMENT/IMPURE CORE + +;600000: START OF PURE CODE (SHARED ALSO) + +; --PURE CODE-- + +; + + + ; BASIC DATA TYPES PRE-DEFINED IN MUDDLE + +; PRIMITIVE DATA TYPES +; IF T IS A DATA TYPE THEN $T=[T,,0] + +; DATA TYPES ARE ASSIGNED BY THE TYPMAK MACRO IN SOME ARBITRARY ORDER + + +;TLOSE ;ILLEGAL TYPE (USED PRIMARILY FOR ERRORS) +;TFIX ;FIXED POINT +;TFLOAT ;FLOATING POINT +;TCHRS ;WORD OF UP TO 5 ASCII CHARACTERS +;TENTRY ; MARKS BEGINNING OF A FRAME ON TP STACK +;TSUBR ;BUILT IN FUNCTION WITH EVALUATED ARGS +;TFSUBR ;BUILT IN FUNCTION WITH UN-EVALUATED ARGS +;TUNBOU ;TYPE GIVEN TO UNBOUND OR UNASSIGNED ATOM +;TBIND ;MARKS BEGINNING OF BINDING BLOCK ON TP STACK +;TILLEG ;POINTER PREVIOUSLY HERE NOW ILLEGAL +;TTIME ;UNIQUE NUMBER (SEE FLOAD) +;TLIST ;POINTER TO LIST ELEMENT +;TFORM ;POINTER TO LIST ELEMENT BUT USED AS AN EXPRESSION +;TSEG ;SAME AS FORM BUT VALUE IS MUST BE STRUCTURED AND IS USED +; ;AS A SEGMENT +;TEXPR ;POINTER TO LIST ELEMENT BUT USED AS AN INTERPRETIVE FUNCTION +;TFUNAR ;LIKE TEXPR BUT HAS PARTIALLY EVALUATED ARGS +;TLOCL ;LOCATIVE TO LIST ELEMENT (SEE AT,IN AND SETLOC) +;TFALSE ;NOT TRUTH +;TDEFER ;POINTER TO REAL VALUE (ONLY APPEARS AS CAR OF LIST) +;TUVEC ;AOBJN POINTER TO UNIFORM VECTOR +;TOBLS ;AOBJN TO UVEC OF LISTS OF ATOMS. USED AS SYMBOL TABLE +;TVEC ;VECTOR (AOBJN POINTER TO GENERALIZED VECTOR) +;TCHAN ;VECTOR OF INFO DESCRIBING AN I/O CHANNEL +;TLOCV ;LOCATIVE TO GENERAL VECTOR (SEE AT,IN AND SETLOC) +;TTVP ;POINTER TO TRANSFER VECTOR +;TBVL ;BEGINS A VECTOR BINDING ON THE TP STACK +;TTAG ;VECTOR OF INFO SPECIFYING A GENERALIZED TAG +;TPVP ;POINTER TO PROCESS VECTOR +;TLOCI ;POINTER TO ATOM VALUE ON STACK (INTERNAL NOT SEEN BY USER) +;TTP ;POINTER TO MAIN MARKED STACK +;TSP ;POINTER TO CURRENT BINDINGS ON STACK +;TLOCS ;LOCATIVE TO STACK (NOT CURRENTLY USED) +;TPP ;POINTER TO PLANNER PDL (NOT CURRENTLY USED) +;TPLD ;POINTER TO P-STACK (UNMARKED) +;TARGS ;POINTER TO AN ARG BLOCK (HAIRY KLUDGE) +;TAB ;SAVED AB (NOT GIVEN TO USER) +;TTB ;SAVED TB (NOT GIVEN TO USER) +;TFRAME ;USER POINTER TO STACK FRAME +;TCHSTR ;BYTE POINTER TO STRING OF CHARS (COUNT ALSO INCLUDED) +;TATOM ;POINTER TO ATOM +;TLOCD ;USER LOCATIVE TO ATOM VALUE +;TBYTE :POINTER TO ARBITRARY BYTE STRING (NOT CURRENTLY USED) +;TENV ;USER POINTER TO FRAME USED AS AN ENVIRONMENT +;TACT ;USER POINTER TO FRAME FOR A NAMED ACTIVATION +;TASOC ;ASSOCIATION TRIPLE +;TLOCU ;LOCATIVE TO UVECTOR ELEMENT (SEE AT,IN AND SETLOC) +;TLOCS ;LOCATIVE TO A BYTE IN A CHAR STRING (SEE AT,IN AND SETLOC) +;TLOCA ;LOCATIVE TO ELEMENT IN ARG BLOCK +;TENTS ;NOT USED +;TBS ; "" +;TPLDS ; "" +;TPC ; "" +;TINFO ;POINTER TO LIST ELEMENT USED WITH ARG POINTERS +;TNBS ;NOT USED +;TBVLS ;NOT USED +;TCSUBR ;CARE SUBR (USED ONLY WITH CUDDLE SEE -- WJL) +;TWORD ;36-BIT WORD +;TRSUBR ;COMPILED PROGRAM (ACTUALLY A VECTOR POINTER) +;TCODE ;UNIFORM VECTOR OF INSTRUCTIONS +;TCLIST ;NOT USED +;TBITS ;GENERAL BYTE POINTER +;TSTORA ;POINTER TO NON GC IMPURE STUFF +;TPICTU ;E&S CODE IN NON GC SPACE +;TSKIP ;ENVIRONMENT SPLICE +;TLINK ;LEXICAL LINK +;TINTH ;INTERRUPT HEADER +;THAND ;INTERRUPT HANDLER +;TLOCN ;LOCATIVE TO ASSOCIATION +;TDECL ;POINTER TO LIST OF ATOMS AND TYPE DECLARATIONS +;TDISMI ;TYPE MEANING DONT RUN REST OF HANDLERS +;TDCLI ; INTERNAL TYPE FOR SAVED FUNCTION BODY +;TMENT ; POINTER TO MAIN ENTRY OF WHICH THIS IS PART +;TENTER ; NON-MAIN ENTRY TO AN RSUBR +;TSPLICE ; RETURN FROM READ MACRO MEANS SPLICE SUBELEMENTS IN +;TPCODE ; PURE CODE POINTER IN FUNNY FORMAT +;TTYPEW : TYPE WORD +;TTYPEC ; TYPE CODE +;TGATOM ; ATOM WITH GVALUE +;TREADA ; READ ACTIVATION HACK +;TUNWIN ; INTERNAL FOR UNWIND SPEC ON STACK +;TUBIND ; BINDING OF UNSPECIAL ATOM +;TMACRO ; EVAL MACRO + +; STORGE ALLOCATION TYPES. ALLOCATED BY AN "IRP" LATER IN THIS FILE + + +;S1WORD ;UNMARKED STUFF OF NO INTEREST TO AGC +;S2WORD ;POINTERS TO ELEMENTS IN PAIR SPACE (LIST, FORM, EXPR ETC.) +;S2DEFR ;DEFERRED LIST VALUES +;SNWORD ;POINTERS TO UNIFORM VECTORS +;S2NWOR ;POINTERS TO GENERAL VECTORS +;STPSTK ;STACK POINTERS +;SPSTK ;UNMARKED STACK POINTERS +;SARGS ;POINTERS TO ARG BLOCKS (USER) +;SABASE ;POINTER TO ARG BLOCK (INTERNAL) +;STBASE ;POINTER TO FRAME (INTERNAL) +;SFRAME ;POINTER TO FRAME (USER) +;SBYTE ;GENERAL BYTE POINTER +;SATOM ;POINTER TO ATOM +;SLOCID ;POINTER TO VALUE CELL OF ATOM +;SPVP ;PROCESS VECTORS +;SCHSTR ;ASCII BYTE POINTER +;SASOC ;POINTER TO ASSOCIATION BLOCK +;SINFO ;LIST CELL CONTAINING EXTRA ARGBLOCK INFO +;SSTORE ;NON GC STORGAGE POINTER +;SLOCA ;ARG BLOCK LOCATIVE +;SLOCD ;USER VALUE CELL LOCATIVE +;SLOCS ;LOCATIVE TO STRING +;SLOCU ;LOCATIVE TO UVECTOR +;SLOCV ;LOCATIVE TO GENERAL VECTOR +;SLOCL ;LOCATIVE TO LIST ELEENT +;SLOCN ;LOCATIVE TO ASSOCIATION +;SGATOM ;REALLY ATOM BUT SPECIAL GC HACK + +;NOTE: TO FIND OUT IF A GIVEN STORAGE ALLOCATION TYPE NEEDS TO BE DEFERRED, REFER TO +;LOCATION "MKTBS:" OFFSET BY THE STORAGE TYPE. IF IT IS <0, THAT SAT NEEDS TO BE DEFERRED. +; +;ONE WAY TO DO THIS IS TO PUT A REAL TYPE CODE IN AC A AND PUHSJ P,NWORDT +; A WILL CONTAIN 1 IF NO DEFERRED NEEDED OR 2 IF DEFER IS NEEDED + + ; SOME MUDDLE DATA FORMATS + +; FORMAT OF LIST ELEMENT + +; WORD 1: SIGN BIT, RESERVED FOR GARBAGE COLLECTOR +; BITS 1-17 TYPE OF FIRST ELEMENT OF LIST +; BITS 18-35 POINTS TO REST OF LIST (ALWAYS ANOTHER LIST OR 0) +; +; WORD 2: DATUM OF FIRST ELEMENT OF LIST OF TYPE SPECIFIED +; +; IF DATUM REQUIRES 54 BITS TO SPECIFY, TYPE WILL BE "TDEFER" AND +; VALUE WILL BE AN 18 BIT POINTER TO FULL 2 WORD PAIR + + + +;FORMAT OF GENERAL VECTOR (OF N ELEMENTS) +;POINTED INTO BY AOBJN POINTER +;A GENERAL VECTOR HAS FEWER THAN 2^16 ELEMENTS + + +; TYPE<1> TYPE OF FIRST OBJECT (THE RIGHT HALF OF THE TYPE WORD MIGHT BE NONZERO) +; OBJ<1> OBJECT OF SPECIFIED TYPE +; TYPE<2> +; OBJ<2> +; . +; . +; . +; TYPE +; OBJ +; VD(1)-VECTOR DOPE--SIGN-NOT UNIFORM, BITS 1-17 TYPE,,18-35 GROWTH/SHRINKAGE +; VD(2)-VECTOR DOPE--SIGN-G.C.; BITS 1-17 ARE 2*N+1,,18-35 G.C. RELOCATION EITHER UP OR DOWN + + + ;SPECIAL VECTORS IN THE INITIAL SYSTEM + +;THE SYSTEM KEEPS RELEVANT INFORMATION CONCERNING ALL TYPES +;IN A TYPE VECTOR, TYPVEC, WHICH MAY BE INDEXED BY THE TYPE NUMBER +;FOUND IN THE TYPE FIELD OF ANY GOODIE. TABLES APLTYP AND EVLTYP ALSO EXIST +;THEY SPECIFY HOW DIFFERENT TYPES EVAL AND APPLY. + +;TYPE IN AC A, PUSHJ P,SAT RETURNS STORAGE TYPE IN A + +;TYPE TO NAME OF TYPE TRANSLATION TABLE + +; TATOM,,+CHBIT+TMPLBT + +; ATOMIC NAME + +; CHBIT ON MEANS YOU CANT RANDOMLY CHTYPE INTO THIS TYPE +; TMPLBT ON MEANS A TEMPLATE EXISTS DESCRIBING THIS + +;AN ATOM IS A BLOCK IN VECTOR SPACE WITH THE FOLLOWING FORMAT + +; ,,<0 OR BINDID> ; TLOCI MEANS VAL EXISTS. + ; 0 MEANS GLOBAL +; ; BINDID SPECS ENV IN + ; WHICH LOCAL VAL EXISTS +; +; +; +; <400000+SATOM,,0> +; ,,0 (SIGN BIT FOR G.C. RH FOR G.C. RELOCATION) + +;POINTERS TO INITIAL STRUCTURES AND ATOMS NEEDED BY COMPILED CODE +;WILL BE POINTED TO BY THE TRANSFER VECTOR +;A POINTER TO THIS VECTOR ALWAYS EXISTS IN AC TVP +;THE FORMAT OF THIS VECTOR IS: + +; TYPE,,0 +; VALUE +; . +; . +; . +; TV DOPE WORDS + + +;INFORMATION CONCERNING EACH PROCESS IS KEPT IN THE PROCESS VECTOR +;A POINTER TO THE CURRENT PROCESS ALWAYS EXISTS IN AC PVP +;THE FORMAT OF A PROCESS VECTOR IS: + +; TFIX,,0 +; PROCID ;UNIQUE ID OF THIS PROCESS + +; 20 ELEMENTS (I.E. 40 WORDS) CONTAINIG SAVED ACS +; CAN BE REFERENCED SYMBOLICALLY USING SYMBOLS +; OF THE FORM AC!STO(PVP) + +; OTHER PROCESS LOCAL INFO LIKE LEXICAL STATE, PROCESS STATE,LAST RESUMER +; . +; . +; . +; PV DOPE WORDS + + + + +;FORMAT OF PUSH DOWN STACKS USED AND CONVENTIONS + + IF1 [ +PRINTC /MUDDLE - INSERT FILE FOR ALL PROGRAMS +/ +] + +IF2 [PRINTC /MUDDLE +/ +] +;AC ASSIGNMNETS + +P"=17 ;THE UNMARKED PDL POINTER (USED BY THE OUTSIDE WORLD AND MUDDLE) +R"=16 ;REFERENCE BASE FOR RSUBRS +M"=15 ;CODE BASE FOR RSUBRS +SP"=14 ;SPECIAL PDL (USED BY MUDDLE FOR VARIABLE BINDINGS)(SPECIAL PDL IS PART OF TP) +TP"=13 ;MARKED PDL (USED BY MUDDLE FOR ARGS TO FUNCTIONS + ;AND MARKED TEMPORARIES) +TB"=12 ;MARKED PDL BASE POINTER AND CURRENT FRAME POINTER +AB"=11 ;ARGUMENT PDL BASE (MARKED) + ;AB IS AN AOBJN POINTER TO THE ARGUMENTS +TVP"=7 ;TRANSFER VECTOR POINTER +PVP"=6 ;PROCESS VECTOR POINTER + +;THE FOLLOWING ACS ARE 'SCRATCH' FOR MUDDLE + +A"=1 ; A AND B CONTAIN TYPE AND VALUE UPON FUNCTION RETURNS +B"=2 +C"=3 +D"=4 +E"=5 + +NIL"=0 ;END OF LIST MARKER + +;MACRO TO DEFINE MAIN IF NOT DEFINED + +IF1 [ +DEFINE SYSQ + ITS==1 + IFE <<<.AFNM1>_-24.>->,ITS==0 + IFN ITS,[PRINTC /ITS VERSION +/] + IFE ITS,[PRINTC /TENEX VERSION +/] + + TERMIN + +DEFINE DEFMAI ARG,\D + D==.TYPE ARG + IFE ,ARG==0 + EXPUNGE D + TERMIN +] + +DEFMAI MAIN +DEFMAI READER + +IF2,EXPUNGE DEFMAI + + ;DEFINE TYPES AND $TYPES AND IF MAIN NOT 0, MAKE THE $TYPE WORDS + + +IFN MAIN,NUMPRI==-1 + +IF1 [ +NUMPRI==-1 ;NUMBER OF PRIMITIVE TYPES + +DEFINE TYPMAK SAT,LIST +IRP A,,[LIST] +NUMPRI==NUMPRI+1 +IRP B,,[A] +T!B==NUMPRI +.GLOBAL $!T!B +IFN MAIN,[$!T!B=[T!B,,0] +] +.ISTOP +TERMIN +IFN MAIN,[ +RMT [ADDTYP SAT,A +]] +TERMIN +TERMIN + +;MACRO TO ADD STUFF TO TYPE VECTOR + +IFN MAIN,[ +DEFINE ADDTYP SAT,TYPE,NAME,CHF,\CH + IFSE [CHF],CH==0 + IFSN [CHF],CH==CHBIT + IFSE [NAME]IN,CH==CHBIT + IFSN [CHF]-1,[ + TATOM,,CH+SAT + IFSN [NAME],[IFSE [NAME]IN,MQUOTE INTERNAL + IFSN [NAME]IN,MQUOTE [NAME] + ] + IFSE [NAME],MQUOTE TYPE + ] + IFSE [CHF]-1,[ + TATOM,,CH+SAT + IMQUOTE [NAME] + ] + TERMIN +] +] +IF2 [IFE MAIN,[DEFINE TYPMAK SAT,LIST + RMT [EXPUN [LIST] +] + TERMIN +] +] + +;DEFINE THE STORAGE ALLOCATION TYPES IN THE WORLD + + +NUMSAT==0 +GENERAL==400000,,0 ;FLAG FOR BEING A GENERAL VECTOR + +IF1 [ +DEFINE PRMACR HACKER + +IRP A,,[1WORD,2WORD,2DEFRD,NWORD,2NWORD,TPSTK,PSTK,ARGS +ABASE,TBASE,FRAME,BYTE,ATOM,LOCID,PVP,CHSTR,ASOC,INFO,STORE +LOCA,LOCD,LOCS,LOCU,LOCV,LOCL,LOCN,GATOM,LOCT] + +HACKER A + +TERMIN +TERMIN + + + +DEFINE DEFINR B + NUMSAT==NUMSAT+1 + S!B==NUMSAT + TERMIN +] + +PRMACR DEFINR + +STMPLT==NUMSAT+1 + +;MACRO FOR SAVING STUFF TO DO LATER + +.GSSET 4 + +DEFINE HERE G00002,G00003 +G00002!G00003!TERMIN + +IF1 [ +DEFINE RMT A +HERE [DEFINE HERE G00002,G00003 +G00002!][A!G00003!TERMIN] +TERMIN +] + + +RMT [EXPUNGE GENERAL,NUMSTA +] + +DEFINE XPUNGR A + EXPUNGE S!A + TERMIN + +IFE MAIN,[ +RMT [PRMACR XPUNGR +] +] + +C.BUF==1 +C.PRIN==2 +C.BIN==4 +C.OPN==10 +C.READ==40 + +; FLAG INDICATING VECTOR FOR GCHACK + +.VECT.==40000 + +; DEFINE SYMBLOS FOR VARIOUS OBLISTS + +SYSTEM==0 ;MAIN SYSTEM OBLIST +ERRORS==1 ;ERROR COMMENT OBLIST +INTRUP==2 ;INERRUPT OBLIST +MUDDLE==3 ;MUDDLE GLOBAL SYMBOLS (ADDRESSES) + +RMT [EXPUNGE SYSTEM,ERRORS,INTRUP +] +; DEFINE SYMBOLS FOR PROCESS STATES + +RUNABL==1 +RESMBL==2 +RUNING==3 +DEAD==4 +BLOCKED==5 + +IFE MAIN,[RMT [EXPUNGE RESMBL,RUNABL,RUNING,DEAD,BLOCKED +] +] ;BUILD THE TYPE CODES AND ADD STUFF TO TYPVEC AND DEFINE $!TYPE) + +IFN MAIN,[RMT [SAVE==. + LOC TYPVLC + ] + ] + + +TYPMAK S1WORD,[[LOSE],FIX,FLOAT,[CHRS,CHARACTER],[ENTRY,IN],[SUBR,,1],[FSUBR,,1]] +TYPMAK S1WORD,[[UNBOUND,,1],[BIND,IN],[ILLEGAL,,1],TIME] +TYPMAK S2WORD,[LIST,FORM,[SEG,SEGMENT],[EXPR,FUNCTION],[FUNARG,CLOSURE]] +TYPMAK SLOCL,[LOCL] +TYPMAK S2WORD,[FALSE] +TYPMAK S2DEFRD,[[DEFER,IN]] +TYPMAK SNWORD,[[UVEC,UVECTOR],[OBLS,OBLIST,-1]] +TYPMAK S2NWORD,[[VEC,VECTOR],[CHAN,CHANNEL,1]] +TYPMAK SLOCV,[LOCV] +TYPMAK S2NWORD,[[TVP,IN],[BVL,IN],[TAG,,1]] +TYPMAK SPVP,[[PVP,PROCESS]] +TYPMAK STPSTK,[[LOCI,IN],[TP,IN],[SP,IN],[LOCS,IN]] +TYPMAK S2WORD,[[MACRO]] +TYPMAK SPSTK,[[PDL,IN]] +TYPMAK SARGS,[[ARGS,TUPLE]] +TYPMAK SABASE,[[AB,IN]] +TYPMAK STBASE,[[TB,IN]] +TYPMAK SFRAME,[FRAME] +TYPMAK SCHSTR,[[CHSTR,STRING]] +TYPMAK SATOM,[ATOM] +TYPMAK SLOCID,[LOCD] +TYPMAK SBYTE,[BYTE] +TYPMAK SFRAME,[[ENV,ENVIRONMENT],[ACT,ACTIVATION,1]] +TYPMAK SASOC,[ASOC] +TYPMAK SLOCU,[LOCU] +TYPMAK SLOCS,[LOCS] +TYPMAK SLOCA,[LOCA] +TYPMAK S1WORD,[[CBLK,IN]] +TYPMAK STMPLT,[[TMPLT,TEMPLATE]] +TYPMAK SLOCT,[LOCT] + ;THE FOLLOWING TYPES (THROUGH CSUBR) CAN PROBABLY BE RECYCLED +TYPMAK S1WORD,[[PC,IN]] +TYPMAK SINFO,[[INFO,IN]] +TYPMAK SATOM,[[BNDS,IN]] +TYPMAK S2NWORD,[[BVLS,IN]] +TYPMAK S1WORD,[[CSUBR,,1]] + +TYPMAK S1WORD,[[WORD]] +TYPMAK S2NWORD,[[RSUBR,,1]] +TYPMAK SNWORD,[CODE] + ;TYPE CLIST CAN PROBABLY BE RECYCLED +TYPMAK S2WORD,[[CLIST,IN]] +TYPMAK S1WORD,[[BITS]] +TYPMAK SSTORE,[STORAGE,PICTURE] +TYPMAK STPSTK,[[SKIP,IN]] +TYPMAK SATOM,[[LINK,,1]] +TYPMAK S2NWORD,[[INTH,IHEADER,1],[HAND,HANDLER,1]] +TYPMAK SLOCN,[[LOCN,LOCAS]] +TYPMAK S2WORD,[DECL] +TYPMAK SATOM,[DISMISS] +TYPMAK S2WORD,[[DCLI,IN]] +TYPMAK S2NWORD,[[ENTER,RSUBR-ENTRY,1]] +TYPMAK S2WORD,[SPLICE] +TYPMAK S1WORD,[[PCODE,PCODE,1],[TYPEW,TYPE-W,1],[TYPEC,TYPE-C,1]] +TYPMAK SGATOM,[[GATOM,IN]] +TYPMAK SFRAME,[[READA,,1]] +TYPMAK STBASE,[[UNWIN,IN]] +TYPMAK S1WORD,[[UBIND,IN]] +IFN MAIN,[RMT [LOC SAVE + ] + ] +IF2,EXPUNGE TYPMAK,DOTYPS + +RMT [EQUALS XP EXPUNGE +IF2,XP STMPLT +] +IF1 [ + +DEFINE EXPUN LIST + IRP A,,[LIST] + IRP B,,[A] + EXPUNGE T!B + .ISTOP + TERMIN + TERMIN + TERMIN +] + + +TYPMSK==17777 +MONMSK==TYPMSK#777777 +SATMSK==777 +CHBIT==1000 +TMPLBT==2000 + +IF1 [ +DEFINE GETYP AC,ADR + LDB AC,[221500,,ADR] + TERMIN + +DEFINE GETYPF AC,ADR + LDB AC,[003700,,ADR] + TERMIN + +DEFINE MONITO + .WRMON==200000 + .RDMON==100000 + .EXMON== 40000 + .GLOBAL .MONWR,.MONRD,.MONEX + RMT [IF2 IFE MAIN, XP .WRMON,.RDMON,.EXMON +] + TERMIN +] + +IFN MAIN,MONITO + +IFE MAIN,[RMT [XP SATMSK,TYPMSK,MONMSK,CHBIT +] +] + ;MUDDLE WIDE GLOBALS + +;DEFINE ENTRIES IN PROCESS VECTOR AS BEING GLOBAL + +IF1 [ +IRP A,,[0,A,B,C,D,E,PVP,TVP,TP,TB,AB,P,PB,SP,M,R] +.GLOBAL A!STO +TERMIN + +.GLOBAL CALER1,FINIS,VECTOP,VECBOT,INTFLG + +;GLOBALS FOR MACROS IN VECTOR AND PAIR SPACE + +.GLOBAL VECLOC,PARLOC,TVBASE,TVLOC,PVLOC,PVBASE,SQUTBL,SQULOC +.GLOBAL PARTOP,CODTOP,HITOP,HIBOT,SPECBIND,LCKINT +.GLOBAL GETWNA,WNA,TFA,TMA,WRONGT,WTYP,WTYP1,WTYP2,WTYP3,CALER,CALER1 +] + + +;STORAGE ALLOCATIN SPECIFICATION GLOBALS + +NSUBRS==600. ; ESTIMATE OF # OF SUBRS IN WOLD +TPLNT"==2000 ;TEMP PDL LENGTHH +GSPLNT==2000 ;INITIAL GLOBAL SP +GCPLNT"==100. ;GARBAGE COLLECTOR'S PDL LENGTH +PVLNT"==100 ;LENGTH OF INITIAL PROCESS VECTOR +TVLNT"==6000 ;MAX TRANSFER VECTOR +ITPLNT"==100 ;TP FOR GC +PLNT"==1000 ;PDL FOR USER PROCESS + +;LOCATIONS OF VARIOUS STORAGE AREAS + +PARBASE"==32000 ;START OF PAIR SPACE +VECBASE"==44000 ;START OF VECTOR SPACE +IFN MAIN,[PARLOC"==PARBASE +VECLOC"==VECBASE +] + +;INITIAL MACROS + +;SYMBLOS ASSOCIATED WITH STACK FRAMES +;TB POINTS TO CURRENT FRAME, THE SYMBOLS BELOW ARE OFFSETS ON TB + +FRAMLN==7 ;LENGTH OF A FRAME +FSAV==-7 ;POINT TO CALLED FUNCTION +OTBSAV==-6 ;POINT TO PREVIOUS FRAME AND CONTAINS TIME +ABSAV==-5 ;ARGUMENT POINTER +SPSAV==-4 ;BINDING POINTER +PSAV==-3 ;SAVED P-STACK +TPSAV==-2 ;TOP OF STACK POINTER +PCSAV==-1 ;PCWORD + +RMT [EXPUNGE FRAMLN +] +IFE MAIN,[RMT [EXPUNGE PCSAV TPSAV SPSAV PSAV ABSAV FSAV OTBSAV +] +] + +;CALL MACRO +; ARGS ARE PUSHED ON THE STACK AS TYPE VALUE PAIRS + +.GLOBAL .MCALL,.ACALL,FINIS,CONTIN,.ECALL,FATINS + +; CALL WITH AN ASSEMBLE TIME KNOWN NUMBER OF ARGUMENTS + +IF1 [ +DEFINE MCALL N,F + .GLOBAL F + IFGE <17-N>,.MCALL N,F + IFL <17-N>,[PRINTC /LOSSAGE AT MCALL - TOO MANY ARGS +/ + .MCALL F + ] + TERMIN + +; CALL WITH RUN TIME KNOWN NUMBER OF ARGS IN AC SPECIFIED BY N + +DEFINE ACALL N,F + .GLOBAL F + .ACALL N,F + TERMIN + +; STANDARD SUBROUTINE RETURN + +; JRST FINIS + +; ARGUMENTS WILL NO LONGER BE ON THE STACK WHEN RETURN HAS HAPPENED +; VALUE SHOULD BE IN A AND B + +;CHECK THAT THE ENTRY POINT WAS CALLED WITH N ARGUMENTS + +DEFINE ENTRY N + IFSN N,,[ + HLRZ A,AB + CAIE A,-2*N + JSP E,GETWNA] +TERMIN + + +; MACROS ASSOCIATED WIT INTERRUPT PROCESSING +;INTERRUPT IF THERE IS A WAITING INTERRUPT + +DEFINE INTGO + SKIPGE INTFLG + JSR LCKINT +TERMIN + +;TO BECOME INTERRUPTABLE + +DEFINE ENABLE + AOSN INTFLG + JSR LCKINT +TERMIN + +;TO BECOME UNITERRUPTABLE + +DEFINE DISABLE + SETZM INTFLG +TERMIN +] + IF1 [ +;MACRO TO BUILD TYPE DISPATCH TABLES EASILY + +DEFINE TBLDIS NAME,DEFAULT,LIST,LNTH + +NAME: + REPEAT LNTH+1,DEFAULT + IRP A,,[LIST] + IRP TYPE,LOCN,[A] + LOC NAME+TYPE + LOCN + .ISTOP + TERMIN + TERMIN + LOC NAME+LNTH+1 +TERMIN + +; DISPATCH FOR NUMPRI GOODIES + +DEFINE DISTBL NAME,DEFAULT,LIST + TBLDIS NAME,DEFAULT,[LIST]NUMPRI + TERMIN + +DEFINE DISTBS NAME,DEFAULT,LIST + TBLDIS NAME,DEFAULT,[LIST]NUMSAT + TERMIN + +] + + +VECFLG==0 +PARFLG==0 + +;MACROS FOR INITIIAL MUDDLE LIST STRUCTURE + +;CHAR STRING MAKER, RETURNS POINTER AND TYPE + +IF1 [ +DEFINE MACHAR NAME,TYPE,VAL,\LNT,WHERE,LAST + TYPE==TCHSTR + VECTGO WHERE + LNT==.LENGTH \NAME!\ + ASCII \NAME!\ + LAST==$." + TCHRS,,0 + $."-WHERE+1,,0 + VAL==LNT,,WHERE + VECRET + +TERMIN +;MACRO TO DEFINE ATOMS + +DEFINE MAKAT NAME,TYAT,VALU,OBLIS,REFER,LOCN,\TVENT,FIRST + FIRST==. + TYAT,,OBLIS + VALU + 0 + ASCII \NAME!\ + 400000+SATOM,,0 + .-FIRST+1,,0 + TVENT==FIRST-.+2,,FIRST + IFSN [LOCN],LOCN==TVENT + ADDTV TATOM,TVENT,REFER + TERMIN + + + + ;MACROS TO SWITCH BACK AND FORTH INTO AND OUT OF VECTOR AND PAIR SPACE +;GENERAL SWITCHER + +DEFINE LOCSET LOCN,RETNAM,NEWLOC,OTHLOC,F1,F2,TOPWRD,\SAVE,SAVEF1,SAVEF2,NEW + + IFE F1,[SAVE==. + LOC NEWLOC + SAVEF2==F2 + IFN F2,OTHLOC==SAVE + F2==0 + DEFINE RETNAM + F1==F1-1 + IFE F1,[NEWLOC==. + F2==SAVEF2 + LOC TOPWRD + NEWLOC + LOC SAVE + ] + TERMIN + ] + + IFN F1,[F1==F1+1 + ] + + IFSN LOCN,,LOCN==. + IFE F1,F1==1 + +TERMIN + + +DEFINE VECTGO LOCN + LOCSET LOCN,VECRET,VECLOC,PARLOC,VECFLG,PARFLG,VECTOP + TERMIN + +DEFINE PARGO LOCN + LOCSET LOCN,PARRET,PARLOC,VECLOC,PARFLG,VECFLG,PARTOP + TERMIN + +DEFINE ADDSQU NAME,\SAVE + SAVE==. + LOC SQULOC + SQUOZE 0,NAME + NAME + SQULOC==. + LOC SAVE + TERMIN + +DEFINE ADDTV TYPE,GOODIE,REFER,\SAVE + SAVE==. + LOC TVLOC + TVOFF==.-TVBASE+1 + TYPE,,REFER + GOODIE + TVLOC==. + LOC SAVE + TERMIN + +;MACRO TO ADD TO PROCESS VECTOR + +DEFINE ADDPV TYPE,GOODIE,OFFS,\SAVE + SAVE==. + LOC PVLOC + PVOFF==.-PVBASE + IFSN OFFS,,OFFS==PVOFF + TYPE,,0 + GOODIE + PVLOC==. + LOC SAVE + TERMIN + + + + + +;MACRO TO DEFINE A FUNCTION ATOM + +DEFINE MFUNCTION NAME,TYPE,PNAME + (TVP) +NAME": + VECTGO DUMMY1 + ADDSQU NAME + IFSE [PNAME],MAKAT NAME,T!TYPE,NAME,SYSTEM, + IFSN [PNAME],MAKAT [PNAME]T!TYPE,NAME,SYSTEM, + VECRET + TERMIN + +; VERSION OF MQUOTE WITH IMPURE BIT ON + +DEFINE IMQUOTE ARG,PNAME,OBLIS,\LOCN + (TVP) + + LOCN==.-1 + VECTGO DUMMY1 + IFSE [PNAME],MAKAT [ARG]<400000+TUNBOU>,0,OBLIS,LOCN + + IFSN [PNAME],MAKAT [PNAME]<400000+TUNBOU>,0,OBLIS,LOCN + VECRET + TERMIN + +;MACRO TO DEFINE QUOTED GOODIE + +DEFINE MQUOTE ARG,PNAME,OBLIS,\LOCN + (TVP) + + LOCN==.-1 + VECTGO DUMMY1 + IFSE [PNAME],MAKAT [ARG]TUNBOU,0,OBLIS,LOCN + IFSN [PNAME],MAKAT [PNAME]TUNBOU,0,OBLIS,LOCN + VECRET + TERMIN + + + + +DEFINE CHQUOTE NAME,\LOCN,TYP,VAL + (TVP) + LOCN==.-1 + MACHAR [NAME]TYP,VAL + ADDTV TYP,VAL,LOCN + + TERMIN + + +; SPECIAL ERROR MQUOTE + +DEFINE EQUOTE ARG,PNAME + MQUOTE ARG,[PNAME]ERRORS TERMIN + + +; MACRO DO .CALL UUOS + +DEFINE DOTCAL NM,LIST,\LOCN + .CALL LOCN + RMT [LOCN==. + SETZ + SIXBIT /NM/ + IRP Q,R,[LIST] + IFSN [R][][Q + ] + + IFSE [R][][\ + ] + TERMIN + ] +TERMIN + +; MACRO TO HANDLE FATAL ERRORS + +DEFINE FATAL MSG/ + FATINS [ASCIZ /: FATAL ERROR MSG  +/] + TERMIN +] + +CHRWD==5 + +IFN READER,[ +NCHARS==177 +;CHARACTER TABLE GENERATING MACROS + +DEFINE SETSYM WRDL,BYTL,COD + WRD!WRDL==& + WRD!WRDL==\<_<<4-BYTL>*7+1>> + TERMIN + +DEFINE INIWRD N,INIT + WRD!N==INIT + TERMIN + +DEFINE OUTWRD N + WRD!N + TERMIN + +;MACRO TO KILL THESE SYMBOLS LATER + +DEFINE KILLWD N + EXPUNGE WRD!N + TERMIN +DEFINE SETMSK N + MSK!N==<177_<<4-N>*7+1>>#<-1> + TERMIN + +;MACRO TO KILL MASKS LATER + +DEFINE KILMSK N + EXPUNGE MSK!N + TERMIN + +NWRDS==/CHRWD + +REPEAT CHRWD,SETMSK \.RPCNT + +REPEAT NWRDS,INIWRD \.RPCNT,004020100402 + +DEFINE OUTTBL + REPEAT NWRDS,OUTWRD \.RPCNT + TERMIN + + +;MACRO TO GENERATE THE DUMMIES EASLILIER + +DEFINE INITCH \DUM1,DUM2,DUM3 + + +DEFINE SETCOD COD,LIST + IRP CHAR,,[LIST] + DUM1==CHAR/5 + DUM2==CHAR-DUM1*5 + SETSYM \DUM1,\DUM2,COD + TERMIN + TERMIN + +DEFINE SETCHR COD,LIST + IRPC CHAR,,[LIST] + DUM3=="CHAR + DUM1==DUM3/5 + DUM2==DUM3-DUM1*5 + SETSYM \DUM1,\DUM2,COD + TERMIN + TERMIN + +DEFINE INCRCO OCOD,LIST + IRP CHAR,,[LIST] + DUM1==CHAR/5 + DUM2==CHAR-DUM1*5 + SETSYM \DUM1,\DUM2,\ + TERMIN + TERMIN + +DEFINE INCRCH OCOD,LIST + IRPC CHAR,,[LIST] + DUM3=="CHAR + DUM1==DUM3/5 + DUM2==DUM3-DUM1*5 + SETSYM \DUM1,\DUM2,\ + TERMIN + TERMIN + RMT [EXPUNGE DUM1,DUM2,DUM3 + REPEAT NWRDS,KILLWD \.RPCNT + REPEAT CHRWD,KILMSK \.RPCNT +] + +TERMIN + +INITCH +] + +;REDEFINE END DO ALL THE REMOTES (ON LAST PASS ONLY) + +EQUALS E.END END + +DEFINE END ARG + EQUALS END E.END + CONSTANTS + + IMPURE + VARIABLES + PURE + HERE + .LNKOT + IF2 GEXPUN + CONSTANTS + IMPURE + VARIABLES + CODEND==. + LOC CODTOP + CODEND + LOC CODEND + PURE + CODEND==. + LOC HITOP + CODEND + LOC CODEND + IF2 EXPUNGE PARFLG,VECFLG,CHRWD,NN,NUMPRI,PURITY,EAD,ACD,PUSHED + IF2 EXPUNGE INSTNT,DUMMY1,PRIM,PPLNT,GSPLNT,MEDIAT + END ARG + TERMIN + + +;MACROS TO PRINT VERSIONS OF PROGRAMS DURING ASSEMBLY + +IF1 [ +DEFINE NUMGEN SYM,\REST,N + NN==NN-1 + N==&77 + REST== + IFN N,IFGE <31-N>,IFGE ,TOTAL==TOTAL*10.+ + IFN NN,NUMGEN REST + EXPUNGE N,REST + TERMIN + +DEFINE VERSIO N + PRINTC /VERSION = N +/ + TERMIN +] + +TOTAL==0 +NN==7 + +NUMGEN .FNAM2 + +IF1 [ +RADIX 10. + +VERSIO \TOTAL + +RADIX 8 +PROGVN==TOTAL + + +DEFINE VATOM SYM,\LOCN,TV,A,B + VECTGO + LOCN==. + TFIX,,MUDDLE + PROGVN + 0 + A==<<<&77>+40>_29.> + B==<&77> + IFN B,A==A+<_22.> + B==<&77> + IFN B,A==A+<_15.> + B==<&77> + IFN B,A==A+<_8.> + B==<&77> + IFN B,A==A+<_1.> + A + IFN ,<+40>_29. + 400000+SATOM,, + .-LOCN+1,,0 + TV==LOCN-.+2,,LOCN + ADDTV TATOM,TV,0 + VECRET + TERMIN + +;VATOM .FNAM1 ;"HACK REMOVED FOR EFFICIENCY" + + +;MACRO TO REMMVE SYMBOLS OF THE FORM "GXXXXX" + +DEFINE GEXPUN \SYM + NN==7 + TOTAL==0 + NUMGEN \ + RADIX 10. + .GSSET 0 + REPEAT TOTAL,XXP + RADIX 8 +TERMIN + +DEFINE XXP \A + EXPUNGE A + TERMIN + + +DEFINE ..LOC NEW,OLD + .LIFS .LPUR"+.LIMPU" + OLD!"==$." + LOC NEW!" + .ELDC + .LIFS -.LPUR" + LOC $." + .ELDC + .LIFS -.LIMPU + LOC $." + .ELDC + TERMIN + + +; PURE - MACRO TO SWITCH LOADING TO PURE CORE. + +DEFINE PURE + IFE PURITY-1, ..LOC .LPUR,.LIMPU + PURITY==0 + TERMIN + +; IMPURE - MACRO TO SWITCH LOADING TO IMPURE CORE. + +DEFINE IMPURE + IFE PURITY, ..LOC .LIMPU,.LPUR + PURITY==1 + TERMIN +] +PURITY==0 + +TITLE MUDEX -- TENEX DEPENDANT MUDDLE CODE + +RELOCATABLE + +.INSRT MUDDLE > +.INSRT STENEX > + +MFORK==400000 + +MONITS==1 + +.GLOBAL %SSNAM,%RSNAM,%KILLM,%LOGOU,%SLEEP,%VALRE,NOTTY,MSGTYP,TTYOP2 +.GLOBAL %UNAM,%JNAM,%RUNAM,%RJNAM,%GCJOB,%SHWND,%SHFNT,%GETIP,%INFMP +.GLOBAL GCHN,WNDP,FRNP,MESSAG,INITFL,6TOCHS,SGSNAM,MTYO,PGINT,WHOAMI +.GLOBAL %TOPLQ,IBLOCK,TMTNXS,TNXSTR,%HANG,ILLUUO,UUOH,IPCINI,CTIME,BFLOAT +.GLOBAL GCRSET + +GCHN==0 +WRTP==1000,,100000 +GCHI==1000,,GCHN +CRJB==1000,,400001 +FME==1000,,-1 +FLS==1000,, + +CTIME: JOBTM ; get run time in milli secs + MOVE B,A + JSP A,BFLOAT ; Convert to floating + FDVRI B,(1000.0) ; Change to units of seconds + MOVSI A,TFLOAT + POPJ P, + +; SET THE SNAME GLOBALLY + +%SSNAM: POPJ P, + +; READ THE GLOBAL SNAME + +%RSNAM: POPJ P, + +; KILL THE CURRENT JOB + +%KILLM: HALTF + POPJ P, + +; PASS STRING TO SUPERIOR (MONITOR?) + +%VALRE: HALTF + POPJ P, + +; LOGOUT OF SYSTEM (MUST BE "TOP LEVEL") + +%LOGOU: LGOUT + POPJ P, + +; GO TO SLEEP A WHILE + +%SLEEP: IMULI A,33. ; TO MILLI SECS + DISMS + POPJ P, + +; HANG FOR EVER + +%HANG: WAIT + +; READ JNAME + +%RJNAM: POPJ P, + +; READ UNAME + +%RUNAM: POPJ P, + +; HERE TO SEE IF WE ARE A TOP LEVEL JOB + +%TOPLQ: GJINF + SKIPGE D + AOS (P) + POPJ P, + +; GET AN INFERIOR FOR THE GARBAGE COLLECTOR + +%GCJOB: PUSH P,A + MOVEI A,200000 ; GET BITS FOR FORK + CFORK ; MAKE AN IFERIOR FORK + FATAL CANT GET GC FORK + MOVEM A,GCFRK ; SAVE HANDLE + POP P,A ; RESTORE PAGE + PUSHJ P,%GETIP ; GET IT THERE + PUSHJ P,%SHWND + JRST %SHFNT ; AND FRONTIER + +; HERE TO GET A PAGE FOR THE INFERIOR + +%GETIP: POPJ P, + +; HERE TO SHARE WINDOW + +%SHWND: TDZA 0,0 ; FLAG SAYING WINDOW + +; HERE TO SHARE FRONTIER + +%SHFNT: MOVEI 0,1 + PUSH P,A + PUSH P,B + PUSH P,C + MOVEI B,2*FRNP ; FRONTIER (REMEMBER TENEX PAGE SIZE) + SKIPN 0 + MOVEI B,2*WNDP ; NO,WINDOW + HRLI B,MFORK + ASH A,1 ; TIMES 2 + HRL A,GCFRK + MOVSI C,140000 ; READ AND WRITE ACCESS + + PMAP + ADDI A,1 + ADDI B,1 + PMAP + ASH B,9. ; POINT TO PAGE + MOVES (B) ; CLOBBER TOP + MOVES -1(B) ; AND UNDER + POP P,C + POP P,B + POP P,A + POPJ P, + +; HERE TO MAP INFERIOR BACK AND KILL SAME + +%INFMP: PUSH P,C + PUSH P,D + PUSH P,E + ASH A,1 + ASH B,1 + MOVE D,A ; POINT TO PAGES + MOVE E,B ; FOR COPYING + PUSH P,A ; SAVE FOR TOUCHING + MOVS A,GCFRK + MOVSI B,MFORK + MOVSI C,120400 ; READ AND WRITE COPY + +LP1: HRRI A,(E) + HRRI B,(D) + PMAP + ADDI E,1 + AOBJN D,LP1 + +; HERE TO TOUCH PAGES TO INSURE KEEPING THEM (KLUDGE) + + POP P,E ; RESTORE MY FIRST PAGE # + MOVEI A,(E) ; COPY FOR LOOP + ASH A,9. ; TO WORD ADDR + MOVES (A) ; WRITE IT + AOBJN E,.-3 ; FOR ALL PAGES + + MOVE A,GCFRK + KFORK + POP P,E + POP P,D + POP P,C + POPJ P, + +; HACK TO PRINT MESSAGE OF INTEREST TO USER + +MESOUT: MOVSI A,(JFCL) + MOVEM A,MESSAG ; DO ONLY ONCE + MOVEI A,400000 + MOVE B,[1,,ILLUUO] + MOVE C,[40,,UUOH] + SCVEC + SETZ SP, ; HACK TO AVOID LOSSAGE WITH GARBAGE IN SP FIRST TIME + PUSHJ P,GCRSET + PUSHJ P,PGINT ; INITIALIZE PAGE MAP + RESET + PUSHJ P,TTYOP2 + SKIPE NOTTY ; HAVE A TTY? + JRST RESNM ; NO, SKIP THIS STUFF + + MOVEI A,MESBLK + MOVEI B,0 + GTJFN + JRST RESNM + MOVE B,[70000,,200000] + OPENF + JRST RESNM + +MSLP: BIN + MOVE D,B ; SAVE BYTE + GTSTS + TLNE B,1000 + JRST RESNM + EXCH D,A + CAIN A,14 + PBOUT + MOVE A,D + JRST MSLP + +RESNM2: CLOSF + JFCL + +RESNM: +RESNM1: POPJ P, + +MESBLK: 100000,, + 377777,,377777 + -1,,[ASCIZ /DSK/] + -1,,[ASCIZ /VEZZA/] + -1,,[ASCIZ /MUDDLE/] + -1,,[ASCIZ /MESSAG/] + 0 + 0 + 0 + +MUDINT: MOVSI 0,(JFCL) ; CLOBBER MUDDLE INIT SWITCH + MOVEM 0,INITFL + + GJINF ; GET INFO NEEDED + PUSHJ P,TMTNXS ; MAKE A TEMP STRING FOR TENEX INFO (POINTER LEFT IN E) + HRROI A,1(E) ; TNX STRING POINTER + DIRST + FATAL ATTACHED DIR DOES NOT EXIST + MOVEI B,1(E) ; NOW HAVE BOUNDS OF STRING + SUBM P,E ; RELATIVIZE E + PUSHJ P,TNXSTR ; MAKE THE STRING + SUB P,E + PUSH TP,$TATOM + PUSH TP,IMQUOTE SNM + PUSH TP,A + PUSH TP,B + MCALL 2,SETG + PUSH TP,$TCHSTR + PUSH TP,CHQUOTE READ + PUSH TP,$TCHSTR + PUSH TP,CHQUOTE MUDDLE.INIT + MCALL 2,FOPEN + GETYP A,A + CAIE A,TCHAN + POPJ P, + PUSH TP,$TCHAN + PUSH TP,B + MOVEI B,INITSTR ; TELL USER WHAT'S HAPPENING + SKIPE WHOAMI + JRST .+3 + SKIPN NOTTY + PUSHJ P,MSGTYP + MCALL 1,MLOAD + POPJ P, + +TMTNXS: POP P,D ; SAVE RET ADDR + MOVE E,P ; BUILD A STRING SPACE ON PSTACK + MOVEI 0,20. ; USE 20 WORDS (=100 CHARS) + PUSH P,[0] + SOJG 0,.-1 + + JRST (D) + + +TNXSTR: SUBI B,(P) + PUSH P,B + ADDI B,-1(P) + SUBI B,(A) ; WORDS TO B + IMULI B,5 ; TO CHARS + LDB 0,[360600,,A] ; GET BYTE POSITION + IDIVI 0,7 ; TO A REAL BYTE POSITION + MOVNS 0 + ADDI 0,5 + SUBM 0,B ; FINAL LENGTH IN BYTES TO B + PUSH P,B ; SAVE IT + MOVEI A,4(B) ; TO WORDS + IDIVI A,5 + PUSHJ P,IBLOCK ; GET STRING + POP P,A + POP P,C + ADDI C,(P) + MOVE D,B ; COPY POINTER + MOVE 0,(C) ; GET A WORD + MOVEM 0,(D) + ADDI C,1 + AOBJN D,.-3 + + HRLI A,TCHSTR + HRLI B,440700 ; MAKE INTO BYTER + POPJ P, + +IPCINI: JFCL +IFN MONITS,[ + +DEMS: SETZ + SIXBIT /DEMSIG/ + SETZ [SIXBIT /MUDSTA/] +] +INITSTR: ASCIZ /MUDDLE INIT/ + +IMPURE + +GCFRK: 0 + +IFN MONITS,[ +MESSDM: 30,,(SIXBIT /IPC/) + .+1 + SIXBIT /MUDDLESTATIS/ + 1 + 1 +] + +MESSAG: PUSHJ P,MESOUT ; MESSAGE SWITCH + +INITFL: PUSHJ P,MUDINT ; MUDDLE INIT SWITCH + +PURE + +END + +TITLE SQUOZE TABLE HANDLER FOR MUDDLE + +RELOCATABLE + +.INSRT MUDDLE > + +.GLOBAL SQUPNT,ATOSQ,SQUTOA + +; POINTER TO TABLE FILLED IN BY INITM + +SQUPNT: 0 + +; GIVEN LOCN OF SUBR RET SQUO NAME ARG AND VAL IN E + +ATOSQ: PUSH P,B + PUSH P,A + MOVE A,SQUPNT ; GET TABLE POINTER + MOVE B,[2,,2] + CAMN E,1(A) + JRST ATOSQ1 + ADD A,B + JUMPL A,.-3 +POPABJ: POP P,B + POP P,A + POPJ P, + +ATOSQ1: MOVE E,(A) + AOS -2(P) + JRST POPABJ + +; BINARY SEARCH FOR SQUOZE SYMBOL ARG IN E + +SQUTOA: PUSH P,A + PUSH P,B + PUSH P,C + + MOVE A,SQUPNT ; POINTER TO TABLE + HLRE B,SQUPNT + MOVNS B + HRLI B,(B) ; B IS CURRENT OFFSET + +UP: ASH B,-1 ; HALVE TABLE + AND B,[-2,,-2] ; FORCE DIVIS BY 2 + MOVE C,A ; COPY POINTER + JUMPLE B,LSTHLV ; CANT GET SMALLER + ADD C,B + CAMLE E,(C) ; SKIP IF EITHER FOUND OR IN TOP + MOVE A,C ; POINT TO SECOND HALF + CAMN E,(C) ; SKIP IF NOT FOUND + JRST WON + CAML E,(C) ; SKIP IF IN TOP HALF + JRST UP + HLLZS C ; FIX UP OINTER + SUB A,C + JRST UP + +WON: MOVE E,1(C) ; RET VAL IN E + AOS -3(P) ; SKIP RET +WON1: POP P,C + POP P,B + POP P,A + POPJ P, + +LSTHLV: CAMN E,(C) ; LINEAR SERCH REST + JRST WON + ADD C,[2,,2] + JUMPL C,.-3 + JRST WON1 ; ALL GONE, LOSE + +END + +TITLE MODIFIED AFREE FOR MUDDLE + +RELOCATABLE + +.INSRT MUDDLE > + +.GLOBAL CAFREE,CAFRET,PARNEW,AGC,PARBOT,CODTOP,CAFRE1 +.GLOBAL STOGC,STOSTR,CAFRE,ISTOST,STOLST,SAT,ICONS,BYTDOP +.GLOBAL FLIST,STORIC +MFUNCTION FREEZE,SUBR + + ENTRY 1 + + GETYP A,(AB) ; get type of it + PUSH TP,(AB) ; save a copy + PUSH TP,1(AB) + PUSH P,[0] ; flag for tupel freeze + PUSHJ P,SAT ; to SAT + MOVEI B,0 ; final type + CAIN A,SNWORD ; check valid types + MOVSI B,TUVEC ; use UVECTOR + CAIN A,S2NWOR + MOVSI B,TVEC + CAIN A,SARGS + MOVSI B,TVEC + CAIN A,SCHSTR + MOVSI B,TCHSTR + JUMPE B,WTYP1 + PUSH P,B ; save final type + CAME B,$TCHSTR ; special chars hack + JRST OK.FR + HRR B,(AB) ; fixup count + MOVEM B,(P) + + MOVEI C,(TB) ; point to it + PUSHJ P,BYTDOP ; A==> points to dope word + HRRO B,1(TB) + SUBI A,1(B) ; A==> length of block + TLC B,-1(A) + MOVEM B,1(TB) ; and save + MOVSI 0,TUVEC + MOVEM 0,(TB) + +OK.FR: HLRE A,1(TB) ; get length + MOVNS A + PUSH P,A + ADDI A,2 + PUSHJ P,CAFREE ; get storage + HRLZ B,1(TB) ; set up to BLT + HRRI B,(A) + POP P,C + ADDI C,(A) ; compute end + BLT B,(C) + MOVEI B,(A) + HLL B,1(AB) + POP P,A + JRST FINIS + + +CAFRE: PUSH P,A + HRRZ E,STOLST+1(TVP) + SETZB C,D + PUSHJ P,ICONS ; get list element + PUSH TP,$TLIST ; and save + PUSH TP,B + MOVE A,(P) ; restore length + ADDI A,2 ; 2 more for dope words + PUSHJ P,CAFREE ; get the core and dope words + POP P,B ; restore count + MOVNS B ; build AOBJN pointer + MOVSI B,(B) + HRRI B,(A) + MOVE C,(TP) + MOVEM B,1(C) ; save on list + MOVSI 0,TSTORA ; and type + HLLM 0,(C) + HRRZM C,STOLST+1(TVP) ; and save as new list + SUB TP,[2,,2] + POPJ P, + +CAFRE1: PUSH P,A + ADDI A,2 + PUSHJ P,CAFREE + HRROI B,(A) ; pointer to B + POP P,A ; length back + TLC B,-1(A) + POPJ P, + +CAFREE: IRP AC,,[B,C,D,E] + PUSH P,AC + TERMIN + SKIPG A ; make sure arg is a winner + FATAL BAD CALL TO CAFREE + MOVSI A,(A) ; count to left half for search + MOVEI B,FLIST ; get first pointer + HRRZ C,(B) ; c points to next block +CLOOP: CAMG A,(C) ; skip if not big enough + JRST CONLIS ; found one + MOVEI D,(B) ; save in case fall out + MOVEI B,(C) ; point to new previous + HRRZ C,(C) ; next block + JUMPN C,CLOOP ; go on through loop + HLRZ E,A ; count to E + CAMGE E,STORIC ; skip if a area or more + MOVE E,STORIC ; else use a whole area + MOVE C,PARBOT ; foun out if any funny space + SUB C,CODTOP ; amount around to C + CAMLE C,E ; skip if must GC + JRST CHAVIT ; already have it + SUBI E,-1(C) ; get needed from agc + MOVEM E,PARNEW ; funny arg to AGC + PUSH P,A + MOVE C,[7,,6] ; SET UP AGC INDICATORS + PUSHJ P,AGC ; collect that garbage + SETZM PARNEW ; dont do it again + AOJL A,GCLOS ; couldn't get core + POP P,A + +; Make sure pointers still good after GC + + MOVEI D,FLIST + HRRZ B,(D) + + HRRZ E,(B) ; next pointer + JUMPE E,.+4 ; end of list ok + MOVEI D,(B) + MOVEI B,(E) + JRST .-4 ; look at next + +CHAVIT: MOVE E,PARBOT ; find amount obtained + SUBI E,1 ; dont use a real pair + MOVEI C,(E) ; for reset of CODTOP + SUB E,CODTOP + EXCH C,CODTOP ; store it back + CAIE B,(C) ; did we simply grow the last block? + JRST CSPLIC ; no, splice it in + HLRZ C,(B) ; length of old guy + ADDI C,(E) ; total length + ADDI B,(E) ; point to new last dope word + HRLZM C,(B) ; clobber final length in + HRRM B,(D) ; and splice into free list + MOVEI C,(B) ; reset acs for reentry into loop + MOVEI B,(D) + JRST CLOOP + +; Here to splice new core onto end of list. + +CSPLIC: MOVE C,CODTOP ; point to end of new block + HRLZM E,(C) ; store length of new block in dope words + HRRM C,(D) ; D is old previous, link it up + MOVEI B,(D) ; and reset B for reentry into loop + JRST CLOOP + +; here if an appropriate block is on the list + +CONLIS: HLRZS A ; count back to a rh + HLRZ D,(C) ; length of proposed block to D + CAIN A,(D) ; skip if they are different + JRST CEASY ; just splice it out + MOVEI B,(C) ; point to block to be chopped up + SUBI B,-1(D) ; point to beginning of same + SUBI D,(A) ; amount of block to be left to D + HRLM D,(C) ; and fix up dope words + ADDI B,-1(A) ; point to end of same + HRLZM A,(B) + HRRM B,(B) ; for GC benefit + +CFREET: CAIE A,1 ; if more than 1 + SETZM -1(B) ; make tasteful dope worda + SUBI B,-1(A) + MOVEI A,(B) + IRP AC,,[E,D,C,B] + POP P,AC + TERMIN + POPJ P, + +CEASY: MOVEI D,(C) ; point to block to return + HRRZ C,(C) ; point to next of same + HRRM C,(B) ; smash its previous + MOVEI B,(D) ; point to block with B + HRRM B,(B) ; for GC benefit + JRST CFREET + +GCLOS: PUSH TP,$TATOM + PUSH TP,EQUOTE NO-MORE-STORAGE + JRST CALER1 + +CAFRET: HRROI B,(B) ; prepare to search list + TLC B,-1(A) ; by making an AOBJN pointer + HRRZ C,STOLST+1(TVP) ; start of list + MOVEI D,STOLST+1(TVP) + +CAFRTL: JUMPE C,CPOPJ ; not founc + CAME B,1(C) ; this it? + JRST CAFRT1 + HRRZ C,(C) ; yes splice it out + HRRM C,(D) ; smash it +CPOPJ: POPJ P, ; dont do anything now + +CAFRT1: MOVEI D,(C) + HRRZ C,(C) + JRST CAFRTL + +; Here from GC to collect all unused blocks into free list + +STOGC: SETZB C,E ; zero current length and pointer + MOVE A,CODTOP ; get high end of free space + +STOGCL: CAIG A,STOSTR ; end? + JRST STOGCE ; yes, cleanup and leave + + HLRZ 0,(A) ; get length + ANDI 0,377777 + SKIPGE (A) ; skip if a not used block + JRST STOGC1 ; jump if marked + + JUMPE C,STOGC3 ; jump if no block under construction + ADD C,0 ; else add this length to current + JRST STOGC4 + +STOGC3: MOVEI B,(A) ; save pointer + MOVE C,0 ; init length + +STOGC4: SUB A,0 ; point to next block + JRST STOGCL + +STOGC1: ANDCAM D,(A) ; kill mark bit + JUMPE C,STOGC4 ; if no block under cons, dont fix + HRLM C,(B) ; store total block length + HRRM E,(B) ; next pointer hooked in + MOVEI E,(B) ; new next pointer + MOVEI C,0 + JRST STOGC4 + +STOGCE: JUMPE C,STGCE1 ; jump if no current block + HRLM C,(B) ; smash in count + HRRM E,(B) ; smash in next pointer + MOVEI E,(B) ; and setup E + +STGCE1: HRRZM E,FLIST+1 ; final link up + POPJ P, + +IMPURE + +FLIST: .+1 + ISTOST + +PURE + +END + +TITLE FLOATB--CONVERT FLOATING NUMBER TO ASCII STRING + +RELOCA + +.GLOBAL FLOATB + +ACNUM==1 + +IRP A,,[A,B,C,D,E,F,G,H,I,J] +A==ACNUM +ACNUM==ACNUM+1 +TERMIN + +P==17 + +TEM1==I + +EXPUNGE ACNUM + +FLOATB: PUSH P,B + PUSH P,C + PUSH P,D + PUSH P,F + PUSH P,G + PUSH P,H + PUSH P,I + PUSH P,0 + PUSH P,J + MOVSI 0,440700 ; BUILD BYTEPNTR + HLRZ J,A ; POINT TO BUFFER + HRRI 0,1(J) + MOVE A,(A) ; GET NUMBER + MOVE D,A + SETZM (J) ; Clear counter + PUSHJ P,NFLOT + POP P,J + POP P,0 + POP P,I + POP P,H + POP P,G + POP P,F + POP P,D + POP P,C + POP P,B + POPJ P, + +; at this point we enter code abstracted from DDT. +NFLOT: JUMPG A,TFL1 + JUMPE A,FP1A + MOVNS A + PUSH P,A + MOVEI A,"- + PUSHJ P,CHRO + POP P,A + TLZE A,400000 + JRST FP1A + +TFL1: MOVEI B,0 +TFLX: CAMGE A,FT01 + JRST FP4 + CAML A,FT8 + AOJA B,FP4 +FP1A: +FP3: SETZB C,TEM1 ; CLEAR DIGIT CNTR, C TO RECEIVE FRACTION + MULI A,400 + ASHC B,-243(A) + MOVE A,B + PUSHJ P,FP7 + PUSH P,A + MOVEI A,". + PUSHJ P,CHRO + POP P,A + MOVNI A,10 + ADD A,TEM1 + MOVE E,C +FP3A: MOVE D,E + MULI D,12 + PUSHJ P,FP7B + SKIPE E + AOJL A,FP3A + POPJ P, ; ONE return from OFLT here + +FP4: MOVNI C,6 + MOVEI F,0 +FP4A: ADDI F,1(F) + XCT FCP(B) + SOSA F + FMPR A,@FCP+1(B) + AOJN C,FP4A + PUSH P,EXPSGN(B) + PUSHJ P,FP3 + PUSH P,A + MOVEI A,"E + PUSHJ P,CHRO + POP P,A + POP P,D + PUSHJ P,FDIGIT + MOVE A,F + +FP7: SKIPE A ; AVOID AOSING TEM1, NOT SIGNIFICANT DIGIT + AOS TEM1 + IDIVI A,12 + HRLM B,(P) + JUMPE A,FP7A1 + PUSHJ P,FP7 + +FP7A1: HLRZ D,(P) +FP7B: ADDI D,"0 + +; type digit +FDIGIT: PUSH P,A + MOVE A,D + PUSHJ P,CHRO + POP P,A + POPJ P, + +CHRO: AOS (J) ; COUNT CHAR + IDPB A,0 ; STUFF CHAR + POPJ P, + +; constants + 1.0^32. + 1.0^16. +FT8: 1.0^8 + 1.0^4 + 1.0^2 + 1.0^1 +FT: 1.0^0 + 1.0^-32. + 1.0^-16. + 1.0^-8 + 1.0^-4 + 1.0^-2 +FT01: 1.0^-1 +FT0=FT01+1 + +; instructions +FCP: CAMLE A, FT0(C) + CAMGE A, FT(C) + 0, FT0(C) + +EXPSGN: "- + "+ + + +EXPUNGE A,B,C,D,E,F,G,H,I,J,TEM1,P + +END + TITLE PRIMITIVE FUNCTIONS FOR THE MUDDLE SYSTEM + +RELOCATABLE + +.INSRT MUDDLE > + +.GLOBAL TMA,TFA,CELL,IBLOCK,IBLOK1,ICELL2,VECTOP +.GLOBAL NWORDT,CHARGS,CHFRM,CHLOCI,IFALSE,IPUTP,IGETP,BYTDOP +.GLOBAL OUTRNG,IGETLO,CHFRAM,ISTRUC,TYPVEC,SAT,CHKAB,VAL,CELL2,MONCH,MONCH0 +.GLOBAL RMONCH,RMONC0,LOCQ,LOCQQ,SMON,PURERR,APLQ,NAPT,TYPSEG,NXTLM +.GLOBAL MAKACT,ILLCHO,COMPER,CEMPTY,CIAT,CIEQUA,CILEGQ,CILNQ,CILNT,CIN,CINTH,CIREST +.GLOBAL CISTRU,CSETLO,CIPUT,CIGET,CIGETL,CIMEMQ,CIMEMB,CIMON,CITOP,CIBACK +.GLOBAL IGET,IGETL,IPUT,CIGETP,CIGTPR,CINEQU,IEQUAL,TD.LNT,TD.GET,TD.PUT,TD.PTY +.GLOBAL TMPLNT,ISTRCM + +; BUILD DISPATCH TABLE FOR PRIMITIVE FUNCTIONS USAGE + +PRMTYP: + +REPEAT NUMSAT,[0] ;INITIALIZE TABLE TO ZEROES + +IRP A,,[2WORD,2NWORD,NWORD,ARGS,CHSTR,BYTE] + +LOC PRMTYP+S!A +P!A==.IRPCN+1 +P!A + +TERMIN + +PTMPLT==PBYTE+1 + +; FUDGE FOR STRUCTURE LOCATIVES + +IRP A,,[[LOCL,2WORD],[LOCV,2NWORD],[LOCU,NWORD],[LOCS,CHSTR],[LOCA,ARGS] +[LOCT,TMPLT]] + IRP B,C,[A] + LOC PRMTYP+S!B + P!B==P!C,,0 + P!B + .ISTOP + TERMIN +TERMIN + +LOC PRMTYP+SSTORE ;SPECIAL HACK FOR AFREE STORAGE +PNWORD + +LOC PRMTYP+NUMSAT+1 + +PNUM==PTMPLT+1 + +; MACRO TO BUILD PRIMITIVE DISPATCH TABLES + +DEFINE PRDISP NAME,DEFAULT,LIST + TBLDIS NAME,DEFAULT,[LIST]PNUM + TERMIN + + +; SUBROUTINE TO RETURN PRIMITIVE TYPE AND PRINT ERROR IF ILLEGAL + +PTYPE: GETYP A,(B) ;CALLE D WITH B POINTING TO PAIR + CAIN A,TILLEG ;LOSE IF ILLEGAL + JRST ILLCHOS + + PUSHJ P,SAT ;GET STORAGE ALLOC TYPE + CAIE A,SLOCA + CAIN A,SARGS ;SPECIAL HAIR FOR ARGS + PUSHJ P,CHARGS + CAIN A,SFRAME + PUSHJ P,CHFRM + CAIN A,SLOCID + PUSHJ P,CHLOCI +PTYP1: MOVEI 0,(A) ; ALSO RETURN PRIMTYPE + CAILE A,NUMSAT ; SKIP IF NOT TEMPLATE + SKIPA A,[PTMPLT] + MOVE A,PRMTYP(A) ;GET PRIM TYPE, + POPJ P, + +; COMPILERS CALL TO ABOVE (LESS CHECKING) + +CPTYPE: PUSHJ P,SAT + MOVEI 0,(A) + CAILE A,NUMSAT + SKIPA A,[PTMPLT] + MOVE A,PRMTYP(A) + POPJ P, + + +MFUNCTION SUBSTRUC,SUBR + + ENTRY + JUMPGE AB,TFA ;need at least one arg + CAMGE AB,[-10,,0] ;NO MORE THEN 4 + JRST TMA + MOVE B,AB + PUSHJ P,PTYPE ;get primtype in A + PUSH P,A + JRST @TYTBL(A) + +RESSUB: CAMLE AB,[-2,,0] ;if only one arg skip rest + JRST @COPYTB(A) + HLRZ B,(AB)2 ;GET TYPE + CAIE B,TFIX ;IF FIX OK + JRST WRONGT + MOVE B,(AB)1 ;ptr to object of resting + MOVE C,(AB)3 ;# of times to rest + MOVEI E,(A) + MOVE A,(AB) + PUSHJ P,@MRSTBL(E) + PUSH TP,A ;type + PUSH TP,B ;put rested sturc on stack + JRST ALOCOK + +PRDISP TYTBL,IWTYP1,[[P2WORD,RESSUB],[P2NWORD,RESSUB] +[PNWORD,RESSUB],[PCHSTR,RESSUB]] + +PRDISP MRSTBL,IWTYP1,[[P2WORD,LREST],[P2NWORD,VREST] +[PNWORD,UREST],[PCHSTR,SREST]] + +PRDISP COPYTB,IWTYP1,[[P2WORD,CPYLST],[P2NWORD,CPYVEC] +[PNWORD,CPYUVC],[PCHSTR,CPYSTR]] + +PRDISP ALOCTB,IWTYP1,[[P2WORD,ALLIST],[P2NWORD,ALVEC] +[PNWORD,ALUVEC],[PCHSTR,ALSTR]] + +ALOCFX: MOVE B,(TP) ;missing 3rd arg aloc for "rest" of struc + MOVE C,-1(TP) + MOVE A,(P) + PUSH P,[377777,,-1] + PUSHJ P,@LENTBL(A) ;get length of rested struc + SUB P,[1,,1] + POP P,C + MOVE A,B ;# of elements needed + JRST @ALOCTB(C) + +ALOCOK: CAML AB,[-4,,0] ;exactly 3 args + JRST ALOCFX + HLRZ C,(AB)4 + CAIE C,TFIX ;OK IF TYPE FIX + JRST WRONGT + POP P,C ;C HAS PRIMTYYPE + MOVE A,(AB)5 ;# of elements needed + JRST @ALOCTB(C) ;DO ALLOCATION + + +CPYVEC: HLRE A,(AB)1 ;USE WHEN ONLY ONE ARG + MOVNS A + ASH A,-1 ;# OF ELEMENTS FOR ALLOCATION + PUSH TP,(AB) + PUSH TP,(AB)1 + +ALVEC: PUSH P,A + ASH A,1 + HRLI A,(A) + ADD A,(TP) + CAIL A,-1 ;CHK FOR OUT OF RANGE + JRST OUTRNG + CAMGE AB,[-6,,] ; SKIP IF WE GET VECTOR + JRST ALVEC2 ; USER SUPPLIED VECTOR + MOVE A,(P) + PUSHJ P,IBLOK1 +ALVEC1: MOVE A,(P) ;# OF WORDS TO ALLOCATE + MOVE C,B ; SAVE VECTOR POINTER + ASH A,1 ;TIMES 2 + HRLI A,(A) + ADD A,B ;PTING TO FIRST DOPE WORD -ALLOCATED + CAIL A,-1 + JRST OUTRNG + SUBI A,1 ;ptr to last element of the block + HRL B,(TP) ;bleft-ptr to source , b right -ptr to allocated space + BLT B,(A) + MOVE B,C + POP P,A + SUB TP,[2,,2] + MOVSI A,TVEC + JRST FINIS + +ALVEC2: GETYP 0,6(AB) ; CHECK IT IS A VECTOR + CAIE 0,TVEC + JRST WTYP + HLRE A,7(AB) ; CHECK SIZE + MOVNS A + ASH A,-1 ; # OF ELEMENTS + CAMGE A,(P) ; SKIP IF BIG ENOUGH + JRST OUTRNG + MOVE B,7(AB) ; WINNER, JOIN COMMON CODE + JRST ALVEC1 + +CPYUVC: HLRE A,(AB)1 ;# OF ELEMENTS FOR ALLOCATION + MOVNS A + PUSH TP,(AB) + PUSH TP,1(AB) + +ALUVEC: PUSH P,A + HRLI A,(A) + ADD A,(TP) ;PTING TO DOPE WORD OF ORIG VEC + CAIL A,-1 + JRST OUTRNG + CAMGE AB,[-6,,] ; SKIP IF WE SUPPLY UVECTOR + JRST ALUVE2 + MOVE A,(P) + PUSHJ P,IBLOCK +ALUVE1: MOVE A,(P) ;# of owrds to allocate + HRLI A,(A) + ADD A,B ;LOCATION O FIRST ALLOCATED DOPE WORD + HLR D,(AB)1 ;# OF ELEMENTS IN UVECTOR + MOVNS D + ADD D,(AB)1 ;LOCATION OF FIRST DOPE WORD FOR SOURCE + GETYP E,(D) ;GET UTYPE + CAML AB,[-6,,] ; SKIP IF USER SUPPLIED OUTPUT UVECTOR + HRLM E,(A) ;DUMP UTYPE INTO DOPE WORD OF ALLOC UVEC + CAMGE AB,[-6,,] + CAIN 0,(E) ; 0 HAS USER UVEC UTYPE + JRST .+2 + JRST WRNGUT + CAIL A,-1 + JRST OUTRNG + MOVE C,B ; SAVE POINTER TO FINAL GUY + HRL C,(TP) ;Bleft- ptr to source, Bright-ptr to allocated space + BLT C,-1(A) + POP P,A + MOVSI A,TUVEC + JRST FINIS + +ALUVE2: GETYP 0,6(AB) ; CHECK IT IS A VECTOR + CAIE 0,TUVEC + JRST WTYP + HLRE A,7(AB) ; CHECK SIZE + MOVNS A + CAMGE A,(P) ; SKIP IF BIG ENOUGH + JRST OUTRNG + MOVE B,7(AB) ; WINNER, JOIN COMMON CODE + HLRE A,B + SUBM B,A + GETYP 0,(A) ; GET UTYPE OF USER UVECTOR + JRST ALUVE1 + +CPYSTR: HRR A,(AB) ;#OF CHAR TO COPY + PUSH TP,(AB) ;ALSTR EXPECTS STRING IN TP + PUSH TP,1(AB) + +ALSTR: PUSH P,A + HRRZ 0,-1(TP) ;0 IS LENGTH OFF VECTOR + CAIGE 0,(A) + JRST OUTRNG + CAMGE AB,[-6,,] ; SKIP IF WE SUPPLY STRING + JRST ALSTR2 + ADDI A,4 + IDIVI A,5 + PUSHJ P,IBLOCK ;ALLOCATE SPACE + HRLI B,440700 + MOVE A,(P) ; # OF CHARS TO A +ALSTR1: PUSH P,B ;BYTE PTR TO ALOC SPACE + POP TP,C ;PTR TO ORIGINAL STR + POP TP,D ;USELESS +COPYST: ILDB D,C ;GET NEW CHAR + IDPB D,B ;DEPOSIT CHAR + SOJG A,COPYST ;FINISH TRANSFER? + +CLOSTR: POP P,B ;BYTE PTR TO COPY + POP P,A ;# FO ELEMENTS + HRLI A,TCHSTR + JRST FINIS + +ALSTR2: GETYP 0,6(AB) ; CHECK IT IS A VECTOR + CAIE 0,TCHSTR + JRST WTYP + HRRZ A,6(AB) + CAMGE A,(P) ; SKIP IF BIG ENOUGH + JRST OUTRNG + EXCH A,(P) + MOVE B,7(AB) ; WINNER, JOIN COMMON CODE + JRST ALSTR1 + +CPYLST: SKIPN 1(AB) + JRST ZEROLT + PUSHJ P,CELL2 + POP P,C + HRLI C,TLIST ;TP JUNK FOR GAR. COLLECTOR + PUSH TP,C ;TYPE + PUSH TP,B ;VALUE -PTR TO NEW LIST + PUSH TP,C ;TYPE + MOVE C,1(AB) ;PTR TO FIRST ELEMENT OF ORIG. LIST +REPLST: MOVE D,(C) + MOVE E,1(C) ;GET LIST ELEMENT INTO ALOC SPACE + HLLM D,(B) + MOVEM E,1(B) ;PUT INTO ALLOCATED SPACE + HRRZ C,(C) ;UPDATE PTR + JUMPE C,CLOSWL ;END OF LIST? + PUSH TP,B + PUSHJ P,CELL2 + POP TP,D + HRRM B,(D) ;LINK ALLOCATED LIST CELLS + JRST REPLST + +CLOSWL: POP TP,B ;USELESS + POP TP,B ;PTR TO NEW LIST + POP TP,A ;TYPE + JRST FINIS + + + +ALLIST: CAMGE AB,[-6,,] ; SKIP IF WE BUILD THE LIST + JRST CPYLS2 + JUMPE A,ZEROLT + PUSH P,A + PUSHJ P,CELL + POP P,A ;# OF ELEMENTS + PUSH P,B ;ptr to allocated list + POP TP,C ;ptr to orig list + JRST ENTCOP + +COPYL: ADDI B,2 + HRRM B,-2(B) ;LINK ALOCATED LIST CELLS +ENTCOP: JUMPE C,OUTRNG + MOVE D,(C) + MOVE E,1(C) ;get list element into D+E + HLLM D,(B) + MOVEM E,1(B) ;put into allocated space + HRRZ C,(C) ;update ptrs + SOJG A,COPYL ;finish transfer? + +CLOSEL: POP P,B ;PTR TO NEW LIST + POP TP,A ;type + JRST FINIS + +ZEROLT: SUB TP,[1,,1] ;IF RESTED ALL OF LIST + SUB TP,[1,,1] + MOVSI A,TLIST + MOVEI B,0 + JRST FINIS + +CPYLS2: GETYP 0,6(AB) + CAIE 0,TLIST + JRST WTYP + MOVE B,7(AB) ; GET DEST LIST + MOVE C,(TP) + + JUMPE A,CPYLS3 +CPYLS4: JUMPE B,OUTRNG + JUMPE C,OUTRNG + MOVE D,1(C) + MOVEM D,1(B) + GETYP 0,(C) + HRLM 0,(B) + HRRZ B,(B) + HRRZ C,(C) + SOJG A,CPYLS4 + +CPYLS3: MOVE B,7(AB) + MOVSI A,TLIST + JRST FINIS + + +; PROCESS TYPE ILLEGAL + +ILLCHO: HRRZ B,1(B) ;GET CLOBBERED TYPE + CAIN B,TARGS ;WAS IT ARGS? + JRST ILLAR1 + CAIN B,TFRAME ;A FRAME? + JRST ILFRAM + CAIN B,TLOCD ;A LOCATIVE TO AN ID + JRST ILLOC1 + + LSH B,1 ;NONE OF ABOVE LOOK IN TABLE + ADDI B,TYPVEC+1(TVP) + PUSH TP,$TATOM + PUSH TP,EQUOTE ILLEGAL + PUSH TP,$TATOM + PUSH TP,(B) ;PUSH ATOMIC NAME + MOVEI A,2 + JRST CALER ;GO TO ERROR REPORTER + +; CHECK AN ARGS POINTER + +CHARGS: PUSHJ P,ICHARG ; INTERNAL CHECK + JUMPN B,CPOPJ + +ILLAR1: PUSH TP,$TATOM + PUSH TP,EQUOTE ILLEGAL-ARGUMENT-BLOCK + JRST CALER1 + +ICHARG: PUSH P,A ;SAVE SOME ACS + PUSH P,B + PUSH P,C + SKIPN C,1(B) ;GET POINTER + JRST ILLARG ; ZERO POINTER IS ILLEGAL + HLRE A,C ;FIND ASSOCIATED FRAME + SUBI C,(A) ;C POINTS TO FRAME OR FRAME POINTER + GETYP A,(C) ;GET TYPE OF NEXT GOODIE + CAIN A,TCBLK + JRST CHARG1 + CAIE A,TENTRY ;MUST BE EITHER ENTRY OR TINFO + CAIN A,TINFO + JRST CHARG1 ;WINNER + JRST ILLARG + +CHARG1: CAIN A,TINFO ;POINTER TO FRAME? + ADD C,1(C) ;YES, GET IT + CAIE A,TINFO ;POINTS TO ENTRT? + MOVEI C,FRAMLN(C) ;YES POINT TO END OF FRAME + HLRZ C,OTBSAV(C) ;GET TIME FROM FRAME + HRRZ B,(B) ;AND ARGS TIME + CAIE B,(C) ;SAME? +ILLARG: SETZM -1(P) ; RETURN ZEROED B +POPBCJ: POP P,C + POP P,B + POP P,A + POPJ P, ;GO GET PRIM TYPE + + + +; CHECK A FRAME POINTER + +CHFRM: PUSHJ P,CHFRAM + JUMPN B,CPOPJ + +ILFRAM: PUSH TP,$TATOM + PUSH TP,EQUOTE ILLEGAL-FRAME + JRST CALER1 + +CHFRAM: PUSH P,A ;SAVE SOME REGISTERS + PUSH P,B + PUSH P,C + HRRZ A,(B) ; GE PVP POINTER + HLRZ C,(A) ; GET LNTH + SUBI A,-1(C) ; POINT TO TOP + CAIN A,(PVP) ; SKIP IF NOT THIS PROCESS + MOVEM TP,TPSTO+1(A) ; MAKE CURRENT BE STORED + HRRZ A,TPSTO+1(A) ; GET TP FOR THIS PROC + HRRZ C,1(B) ;GET POINTER PART + CAILE C,1(A) ;STILL WITHIN STACK + JRST BDFR + HLRZ A,FSAV(C) ;CHECK STILL AN ENTRY BLOCK + CAIN A,TCBLK + JRST .+3 + CAIE A,TENTRY + JRST BDFR + HLRZ A,1(B) ;GET TIME FROM POINTER + HLRZ C,OTBSAV(C) ;AND FROM FRAME + CAIE A,(C) ;SAME? +BDFR: SETZM -1(P) ; RETURN 0 IN B + JRST POPBCJ ;YES, WIN + +; CHECK A LOCATIVE TO AN IDENTIFIER + +CHLOCI: PUSHJ P,ICHLOC + JUMPN B,CPOPJ + +ILLOC1: PUSH TP,$TATOM + PUSH TP,EQUOTE ILLEGAL-LOCATIVE + JRST CALER1 + +ICHLOC: PUSH P,A + PUSH P,B + PUSH P,C + + HRRZ A,(B) ;GET TIME FROM POINTER + JUMPE A,POPBCJ ;ZERO, GLOBAL VARIABLE NO TIME + HRRZ C,1(B) ;POINT TO STACK + CAMLE C,VECTOP + JRST ILLOC ;NO + HRRZ C,2(C) ; SHOULD BE DECL,,TIME + CAIE A,(C) +ILLOC: SETZM -1(P) ; RET 0 IN B + JRST POPBCJ + + + + +; PREDICATE TO SEE IF AN OBJECT IS STRUCTURED + +MFUNCTION %STRUC,SUBR,[STRUCTURED?] + + ENTRY 1 + + GETYP A,(AB) ; GET TYPE + PUSHJ P,ISTRUC ; INTERNAL + JRST IFALSE + JRST ITRUTH + + +; PREDICATE TO CHECK THE LEGALITY OF A FRAME/ARGS TUPLE/IDENTIFIER LOCATIVE + +MFUNCTION %LEGAL,SUBR,[LEGAL?] + + ENTRY 1 + + MOVEI B,(AB) ; POINT TO ARG + PUSHJ P,ILEGQ + JRST IFALSE + JRST ITRUTH + +ILEGQ: GETYP A,(B) + CAIN A,TILLEG + POPJ P, + PUSHJ P,SAT ; GET STORG TYPE + CAIN A,SFRAME ; FRAME? + PUSHJ P,CHFRAM + CAIN A,SARGS ; ARG TUPLE + PUSHJ P,ICHARG + CAIN A,SLOCID ; ID LOCATIVE + PUSHJ P,ICHLOC + JUMPE B,CPOPJ + JRST CPOPJ1 + + +; COMPILERS CALL + +CILEGQ: PUSH TP,A + PUSH TP,B + MOVEI B,-1(TP) + PUSHJ P,ILEGQ + TDZA 0,0 + MOVEI 0,1 + SUB TP,[2,,2] + JUMPE 0,NO + +YES: MOVSI A,TATOM + MOVE B,MQUOTE T + JRST CPOPJ1 + +NOM: SUBM M,(P) +NO: MOVSI A,TFALSE + MOVEI B,0 + POPJ P, + +YESM: SUBM M,(P) + JRST YES + ;SUBRS TO DEFINE, GET, AND PUT BIT FIELDS + +MFUNCTION BITS,SUBR + ENTRY + JUMPGE AB,TFA ;AT LEAST ONE ARG ? + GETYP A,(AB) + CAIE A,TFIX + JRST WTYP1 + SKIPLE C,(AB)+1 ;GET FIRST AND CHECK TO SEE IF POSITIVE + CAILE C,44 ;CHECK IF FIELD NOT GREATER THAN WORD SIZE + JRST OUTRNG + MOVEI B,0 + CAML AB,[-2,,0] ;ONLY ONE ARG ? + JRST ONEF ;YES + CAMGE AB,[-4,,0] ;MORE THAN TWO ARGS ? + JRST TMA ;YES, LOSE + GETYP A,(AB)+2 + CAIE A,TFIX + JRST WTYP2 + SKIPGE B,(AB)+3 ;GET SECOND ARG AND CHECK TO SEE IF NON-NEGATIVE + JRST OUTRNG + ADD C,(AB)+3 ;CALCULATE LEFTMOST EXTENT OF THE FIELD + CAILE C,44 ;SHOULD BE LESS THAN WORD SIZE + JRST OUTRNG + LSH B,6 +ONEF: ADD B,(AB)+1 + LSH B,30 ;FORM BYTE POINTER'S LEFT HALF + MOVSI A,TBITS + JRST FINIS + + + +MFUNCTION GETBITS,SUBR + ENTRY 2 + GETYP A,(AB) + PUSHJ P,SAT + CAIN A,SSTORE + JRST .+3 + CAIE A,S1WORD + JRST WTYP1 + GETYP A,(AB)+2 + CAIE A,TBITS + JRST WTYP2 + MOVEI A,(AB)+1 ;GET ADDRESS OF THE WORD + HLL A,(AB)+3 ;GET LEFT HALF OF BYTE POINTER + LDB B,A + MOVSI A,TWORD ; ALWAYS RETURN WORD____ + JRST FINIS + + +MFUNCTION PUTBITS,SUBR + ENTRY + CAML AB,[-2,,0] ;AT LEAST TWO ARGS ? + JRST TFA ;NO, LOSE + GETYP A,(AB) + PUSHJ P,SAT + CAIE A,S1WORD + JRST WTYP1 + GETYP A,(AB)+2 + CAIE A,TBITS + JRST WTYP2 + MOVEI B,0 ;EMPTY THIRD ARG DEFAULT + CAML AB,[-4,,0] ;ONLY TWO ARGS ? + JRST TWOF + CAMGE AB,[-6,,0] ;MORE THAN THREE ARGS ? + JRST TMA ;YES, LOSE + GETYP A,(AB)+4 + PUSHJ P,SAT + CAIE A,S1WORD + JRST WTYP3 + MOVE B,(AB)+5 +TWOF: MOVEI A,(AB)+1 ;ADDRESS OF THE TARGET WORD + HLL A,(AB)+3 ;GET THE LEFT HALF OF THE BYTE POINTER + DPB B,A + MOVE B,(AB)+1 + MOVE A,(AB) ;SAME TYPE AS FIRST ARG'S + JRST FINIS + + +; FUNCTION TO GET THE LENGTH OF LISTS,VECTORS AND CHAR STRINGS + +MFUNCTION LNTHQ,SUBR,[LENGTH?] + + ENTRY 2 + GETYP A,(AB)2 + CAIE A,TFIX + JRST WTYP2 + PUSH P,(AB)3 + JRST LNTHER + + +MFUNCTION LENGTH,SUBR + + ENTRY 1 + PUSH P,[377777777777] +LNTHER: MOVE B,AB ;POINT TO ARGS + PUSHJ P,PTYPE ;GET ITS PRIM TYPE + MOVE B,1(AB) + MOVE C,(AB) + PUSHJ P,@LENTBL(A) ; CALL RIGTH ONE + JRST LFINIS ;OTHERWISE USE 0 + +PRDISP LENTBL,IWTYP1,[[P2WORD,LNLST],[P2NWORD,LNVEC],[PNWORD,LNUVEC] +[PARGS,LNVEC],[PCHSTR,LNCHAR],[PTMPLT,LNTMPL]] + +LNLST: SKIPN C,B ; EMPTY? + JRST LNLST2 ; YUP, LEAVE + MOVEI B,1 ; INIT COUNTER + MOVSI A,TLIST ;WILL BECOME INTERRUPTABLE + HLLM A,CSTO(PVP) ;AND C WILL BE A LIST POINTER +LNLST1: INTGO ;IN CASE CIRCULAR LIST + CAMLE B,(P)-1 + JRST LNLST2 + HRRZ C,(C) ;STEP + JUMPE C,.+2 ;DONE, RETRUN LENGTH + AOJA B,LNLST1 ;COUNT AND GO +LNLST2: SETZM CSTO(PVP) + POPJ P, + +LFINIS: POP P,C + CAMLE B,C + JRST IFALSE + MOVSI A,TFIX ;LENGTH IS AN INTEGER + JRST FINIS + +LNVEC: ASH B,-1 ;GENERAL VECTOR DIVIDE BY 2 +LNUVEC: HLRES B ;GET LENGTH + MOVMS B ;MAKE POS + POPJ P, + +LNCHAR: HRRZ B,C ; GET COUNT + POPJ P, + +LNTMPL: GETYP A,(B) ; GET REAL SAT + SUBI A,NUMSAT+1 + HRLS A ; READY TO HIT TABLE + ADD A,TD.LNT+1(TVP) + JUMPGE A,BADTPL + MOVE C,B ; DATUM TO C + XCT (A) ; GET LENGTH + HLRZS C ; REST COUNTER + SUBI B,(C) ; FLUSH IT OFF + MOVEI B,(B) ; IN CASE FUNNY STUFF + MOVSI A,TFIX + POPJ P, + +; COMPILERS ENTRIES + +CILNT: SUBM M,(P) + PUSH P,[377777,,-1] + MOVE C,A + GETYP A,A + PUSHJ P,CPTYPE ; GET PRIMTYPE + JUMPE A,COMPERR + PUSHJ P,@LENTBL(A) ; DISPATCH + MOVSI A,TFIX + SUB P,[1,,1] +MPOPJ: SUBM M,(P) + POPJ P, + +CILNQ: SUBM M,(P) + PUSH P,C + MOVE C,A + GETYP A,A + PUSHJ P,CPTYPE + JUMPE A,COMPERR + PUSHJ P,@LENTBL(A) + POP P,C + SUBM M,(P) + MOVSI A,TFIX + CAMG B,C + JRST CPOPJ1 + MOVSI A,TFALSE + MOVEI B,0 + POPJ P, + + + +IDNT1: MOVE A,(AB) ;RETURN THE FIRST ARG + MOVE B,1(AB) + JRST FINIS + +MFUNCTION QUOTE,FSUBR + + ENTRY 1 + + GETYP A,(AB) + CAIE A,TLIST ;ARG MUST BE A LIST + JRST WTYP1 + SKIPN B,1(AB) ;SHOULD HAVE A BODY + JRST TFA + + HLLZ A,(B) ; GET IT + MOVE B,1(B) + JSP E,CHKAB + JRST FINIS + +MFUNCTION NEQ,SUBR,[N==?] + + MOVEI D,1 + JRST EQR + +MFUNCTION EQ,SUBR,[==?] + + MOVEI D,0 +EQR: ENTRY 2 + + GETYP A,(AB) ;GET 1ST TYPE + GETYP C,2(AB) ;AND 2D TYPE + MOVE B,1(AB) + CAIN A,(C) ;CHECK IT + CAME B,3(AB) + JRST @TABLE2(D) + JRST @TABLE1(D) + +ITRUTH: MOVSI A,TATOM ;RETURN TRUTH + MOVE B,MQUOTE T + JRST FINIS + +IFALSE: MOVSI A,TFALSE ;RETURN FALSE + MOVEI B,0 + JRST FINIS + +TABLE1: ITRUTH +TABLE2: IFALSE + ITRUTH + + + + +MFUNCTION EMPTY,SUBR,EMPTY? + + ENTRY 1 + + MOVE B,AB + PUSHJ P,PTYPE ;GET PRIMITIVE TYPE + + MOVEI A,(A) + JUMPE A,WTYP1 + SKIPN B,1(AB) ;GET THE ARG + JRST ITRUTH + + CAIN A,PTMPLT ; TEMPLATE? + JRST EMPTPL + CAIE A,P2WORD ;A LIST? + JRST EMPT1 ;NO VECTOR OR CHSTR + JUMPE B,ITRUTH ;0 POINTER MEANS EMPTY LIST + JRST IFALSE + + +EMPT1: CAIE A,PCHSTR ;CHAR STRING? + JRST EMPT2 ;NO, VECTOR + HRRZ B,(AB) ; GET COUNT + JUMPE B,ITRUTH ;0 STRING WINS + JRST IFALSE + +EMPT2: JUMPGE B,ITRUTH + JRST IFALSE + +EMPTPL: PUSHJ P,LNTMPL ; GET LENGTH + JUMPE B,ITRUTH + JRST IFALSE + +; COMPILER'S ENTRY TO EMPTY + +CEMPTY: PUSH P,A + GETYP A,A + PUSHJ P,CPTYPE + POP P,0 + JUMPE A,COMPERR + JUMPE B,YES ; ALWAYS EMPTY + CAIN A,PTMPLT + JRST CEMPTP + CAIN A,P2WORD + JRST NO + CAIN A,PCHSTR + JRST .+3 + JUMPGE B,YES + JRST NO + TRNE 0,-1 ; STRING, SKIP ON ZERO LENGTH FIELD + JRST NO + JRST YES + +CEMPTP: PUSHJ P,LNTMPL + JUMPE B,YES + JRST NO + +MFUNCTION NEQUAL,SUBR,[N=?] + PUSH P,[1] + JRST EQUALR + +MFUNCTION EQUAL,SUBR,[=?] + PUSH P,[0] +EQUALR: ENTRY 2 + + MOVE C,AB ;SET UP TO CALL INTERNAL + MOVE D,AB + ADD D,[2,,2] ;C POINTS TO FIRS, D TO SECOND + PUSHJ P,IEQUAL ;CALL INTERNAL + JRST EQFALS ;NO SKIP MEANS LOSE + JRST EQTRUE +EQFALS: POP P,C + JRST @TABLE2(C) +EQTRUE: POP P,C + JRST @TABLE1(C) + + +; COMPILER'S ENTRY TO =? AND N=? + +CINEQU: PUSH P,[0] + JRST .+2 + +CIEQUA: PUSH P,[1] + PUSH TP,A + PUSH TP,B + PUSH TP,C + PUSH TP,D + MOVEI C,-3(TP) + MOVEI D,-1(TP) + SUBM M,-1(P) ; MAY BECOME INTERRUPTABLE + PUSHJ P,IEQUAL + JRST NOE + POP P,C + SUB TP,[4,,4] ; FLUSH TEMPS + JRST @CTAB1(C) + +NOE: POP P,C + SUB TP,[4,,4] + JRST @CTAB2(C) + +CTAB1: NOM +CTAB2: YESM + NOM + +; INTERNAL EQUAL SUBROUTINE + +IEQUAL: MOVE B,C ;NOW CHECK THE ARGS + PUSHJ P,PTYPE + MOVE B,D + PUSHJ P,PTYPE + GETYP 0,(C) ;NOW CHECK FOR EQ + GETYP B,(D) + MOVE E,1(C) + CAIN 0,(B) ;DONT SKIP IF POSSIBLE WINNER + CAME E,1(D) ;DEFINITE WINNER, SKIP + JRST IEQ1 +CPOPJ1: AOS (P) ;EQ, SKIP RETURN + POPJ P, + + +IEQ1: CAIE 0,(B) ;SKIP IF POSSIBLE MATCH +CPOPJ: POPJ P, ;NOT POSSIBLE WINNERS + JRST @EQTBL(A) ;DISPATCH + +PRDISP EQTBL,CPOPJ,[[P2WORD,EQLIST],[P2NWORD,EQVEC],[PNWORD,EQUVEC] +[PARGS,EQVEC],[PCHSTR,EQCHST],[PTMPLT,EQTMPL]] + + +EQLIST: PUSHJ P,PUSHCD ;PUT ARGS ON STACK + +EQLST1: INTGO ;IN CASE OF CIRCULAR + HRRZ C,-2(TP) ;GET FIRST + HRRZ D,(TP) ;AND 2D + CAIN C,(D) ;EQUAL? + JRST EQLST2 ;YES, LEAVE + JUMPE C,EQLST3 ;NIL LOSES + JUMPE D,EQLST3 + GETYP 0,(C) ;CHECK DEFERMENT + CAIN 0,TDEFER + HRRZ C,1(C) ;PICK UP POINTED TO CROCK + GETYP 0,(D) + CAIN 0,TDEFER + HRRZ D,1(D) ;POINT TO REAL GOODIE + PUSHJ P,IEQUAL ;CHECK THE CARS + JRST EQLST3 ;LOSE + HRRZ C,@-2(TP) ;CDR THE LISTS + HRRZ D,@(TP + HRRZM C,-2(TP) ;AND STORE + HRRZM D,(TP) + JRST EQLST1 + +EQLST2: AOS (P) ;SKIP RETRUN +EQLST3: SUB TP,[4,,4] ;REMOVE CRUFT + POPJ P, + +; HERE FOR HACKING TEMPLATE STRUCTURES + +EQTMPL: PUSHJ P,PUSHCD ; SAVE GOODIES + PUSHJ P,PUSHCD + MOVE C,1(C) ; CHECK REAL SATS + GETYP C,(C) + MOVE D,1(D) + GETYP 0,(D) + CAIE 0,(C) ; SKIP IF WINNERS + JRST EQTMP4 + PUSH P,0 ; SAVE MAGIC OFFSET + MOVE B,-2(TP) + PUSHJ P,TM.LN1 ; RET LENGTH IN B + MOVEI B,-1(B) ; FLUSH FUNNY + HLRZ C,-2(TP) + SUBI B,(C) + PUSH P,B + MOVE C,(TP) ; POINTER TO OTHER GUY + ADD A,TD.LNT+1(TVP) + XCT (A) ; OTHER LENGTH TO B + HLRZ 0,B ; REST OFFSETTER + PUSH P,0 + MOVEI B,-1(B) + HLRZ C,(TP) + SUBI B,(C) + CAME B,-1(P) + JRST EQTMP1 + +EQTMP2: AOS C,(P) + SOSGE -1(P) + JRST EQTMP3 ; WIN!! + + MOVE B,-6(TP) ; POINTER + MOVE 0,-2(P) ; GET MAGIC OFFSET + PUSHJ P,TM.TOE ; GET OFFSET TO TEMPLATE + ADD A,TD.GET+1(TVP) + MOVE A,(A) + ADDI E,(A) + XCT (E) ; VAL TO A AND B + MOVEM A,-3(TP) + MOVEM B,-2(TP) + MOVE C,(P) + MOVE B,-4(TP) ; OTHER GUY + MOVE 0,-2(P) + PUSHJ P,TM.TOE + ADD A,TD.GET+1(TVP) + MOVE A,(A) + ADDI E,(A) + XCT (E) ; GET OTHER VALUE + MOVEM A,-1(TP) + MOVEM B,(TP) + MOVEI C,-3(TP) + MOVEI D,-1(TP) + PUSHJ P,IEQUAL ; RECURSE + JRST EQTMP1 ; LOSER + JRST EQTMP2 ; WINNER + +EQTMP3: AOS -3(P) ; WIN RETURN +EQTMP1: SUB P,[3,,3] ; FLUSH JUNK +EQTMP4: SUB TP,[10,,10] + POPJ P, + + + +EQVEC: HLRE A,1(C) ;GET LENGTHS + HLRZ B,1(D) + CAIE B,(A) ;SKIP IF EQUAL LENGTHS + POPJ P, ;LOSE + JUMPGE A,CPOPJ1 ;SKIP RETRUN WIN + PUSHJ P,PUSHCD ;SAVE ARGS + +EQVEC1: INTGO ;IN CASE LONG VECTOR + MOVE C,(TP) + MOVE D,-2(TP) ;ARGS TO C AND D + PUSHJ P,IEQUAL + JRST EQLST3 + MOVE C,[2,,2] ;GET BUMPER + ADDM C,(TP) + ADDB C,-2(TP) ;BUMP BOTH POINTERS + JUMPL C,EQVEC1 + JRST EQLST2 + +EQUVEC: HLRE A,1(C) ;GET LENGTHS + HLRZ B,1(D) + CAIE B,(A) ;SKIP IF EQUAL + POPJ P, + + HRRZ B,1(C) ;START COMPUTING DOPE WORD LOCN + SUB B,A ;B POINTS TO DOPE WORD + GETYP 0,(B) ;GET UNIFORM TYPE + HRRZ B,1(D) ;NOW FIND OTHER DOPE WORD + SUB B,A + HLRZ B,(B) ;OTHER UNIFORM TYPE + CAIE 0,(B) ;TYPES THE SAME? + POPJ P, ;NO, LOSE + + JUMPGE A,CPOPJ1 ;IF ZERO LENGTH ALREADY WON + + HRLZI B,(B) ;TYPE TO LH + PUSH P,B ;AND SAVED + PUSHJ P,PUSHCD ;SAVE ARGS + +EQUV1: MOVEI C,1(TP) ;POINT TO WHERE WILL GO + PUSH TP,(P) + MOVE A,-3(TP) ;PUSH ONE OF THE VECTORS + PUSH TP,(A) ; PUSH ELEMENT + MOVEI D,1(TP) ;POINT TO 2D ARG + PUSH TP,(P) + MOVE A,-3(TP) ;AND PUSH ITS POINTER + PUSH TP,(A) + PUSHJ P,IEQUAL + JRST UNEQUV + + SUB TP,[4,,4] ;POP TP + MOVE A,[1,,1] + ADDM A,(TP) ;BUMP POINTERS + ADDB A,-2(TP) + JUMPL A,EQUV1 ;JUMP IF STILL MORE STUFF + SUB P,[1,,1] ;POP OFF TYPE + JRST EQLST2 + +UNEQUV: SUB P,[1,,1] + SUB TP,[10,,10] + POPJ P, + + + +EQCHST: HRRZ B,(C) ; GET LENGTHS + HRRZ A,(D) + CAIE A,(B) ;SAME + JRST EQCHS3 ;NO, LOSE + MOVE C,1(C) + MOVE D,1(D) + JUMPE A,EQCHS4 ;BOTH 0 LENGTH, WINS + +EQCHS2: + ILDB 0,C ;GET NEXT CHARS + ILDB E,D + CAIE 0,(E) ; SKIP IF STILL WINNING + JRST EQCHS3 ; NOT = + SOJG A,EQCHS2 + +EQCHS4: AOS (P) +EQCHS3: POPJ P, + +PUSHCD: PUSH TP,(C) + PUSH TP,1(C) + PUSH TP,(D) + PUSH TP,1(D) + POPJ P, + + +; REST/NTH/AT/PUT/GET + +; ARG CHECKER + +ARGS1: MOVE E,[JRST WTYP2] ; ERROR CONDITION FOR 2D ARG NOT FIXED +ARGS2: HLRE 0,AB ; CHECK NO. OF ARGS + ASH 0,-1 ; TO - NO. OF ARGS + AOJG 0,TFA ; 0--TOO FEW + AOJL 0,TMA ; MORE THAT 2-- TOO MANY + MOVEI C,1 ; DEFAULT ARG2 + JUMPN 0,ARGS4 ; GET STRUCTURED ARG +ARGS3: GETYP A,2(AB) + CAIE A,TFIX ; SHOULD BE FIXED NUMBER + XCT E ; DO ERROR THING + SKIPGE C,3(AB) ; BETTER BE NON-NEGATIVE + JRST OUTRNG +ARGS4: MOVEI B,(AB) ; POINT TO STRUCTURED POINTER + PUSHJ P,PTYPE ; GET PRIM TYPE + MOVEI E,(A) ; DISPATCH CODE TO E + MOVE A,(AB) ; GET ARG 1 + MOVE B,1(AB) + POPJ P, + +; REST + +MFUNCTION REST,SUBR + + ENTRY + PUSHJ P,ARGS1 ; GET AND CHECK ARGS + PUSHJ P,@RESTBL(E) ; DO IT BASED ON TYPE + MOVE C,A ; THE FOLLOWING IS TO MAKE STORAGE WORK + GETYP A,(AB) + PUSHJ P,SAT + CAIN A,SSTORE ; SKIP IF NOT STORAGE + MOVSI C,TSTORA ; USE ITS PRIMTYPE + MOVE A,C + JRST FINIS + +PRDISP RESTBL,IWTYP1,[[P2WORD,LREST],[PNWORD,UREST],[P2NWOR,VREST],[PARGS,AREST] +[PCHSTR,SREST],[PTMPLT,TMPRST]] + +; AT + +MFUNCTION AT,SUBR + + ENTRY + PUSHJ P,ARGS1 + SOJL C,OUTRNG + PUSHJ P,@ATTBL(E) + JRST FINIS + +PRDISP ATTBL,IWTYP1,[[P2WORD,LAT],[PNWORD,UAT],[P2NWORD,VAT],[PARGS,AAT] +[PCHSTR,STAT],[PTMPLT,TAT]] + + +; NTH + +MFUNCTION NTH,SUBR + + ENTRY + + PUSHJ P,ARGS1 + SOJL C,OUTRNG + PUSHJ P,@NTHTBL(E) + JRST FINIS + +PRDISP NTHTBL,IWTYP1,[[P2WORD,LNTH],[PNWORD,UNTH],[P2NWOR,VNTH],[PARGS,ANTH] +[PCHSTR,SNTH],[PTMPLT,TMPLNT]] + +; GET + +MFUNCTION GET,SUBR + + ENTRY + MOVE E,IIGETP ; MAKE ARG CHECKER FAIL INTO GETPROP + PUSHJ P,ARGS5 ; CHECK ARGS + SOJL C,OUTRNG + SKIPN E,IGETBL(E) ; GET DISPATCH ADR + JRST IGETP ; REALLY PUTPROP + JUMPE 0,TMA + PUSHJ P,(E) ; DISPATCH + JRST FINIS + +PRDISP IGETBL,0,[[P2WORD,LNTH],[PNWORD,UNTH],[P2NWORD,VNTH],[PARGS,ANTH] +[PCHSTR,SNTH],[PTMPLT,TMPLNT]] + +; GETL + +MFUNCTION GETL,SUBR + + ENTRY + MOVE E,IIGETL ; ERROR HACK + PUSHJ P,ARGS5 + SOJL C,OUTRNG ; LOSER + SKIPN E,IGTLTB(E) + JRST IGETLO ; REALLY GETPL + JUMPE 0,TMA + PUSHJ P,(E) ; DISPATCH + JRST FINIS + +IIGETL: JRST IGETLO + +PRDISP IGTLTB,0,[[P2WORD,LAT],[PNWORD,UAT],[P2NWORD,VAT],[PARGS,AAT] +[PCHSTR,STAT]] + + +; ARG CHECKER FOR PUT/GET/GETL + +ARGS5: HLRE 0,AB ; -# OF ARGS + ASH 0,-1 + ADDI 0,2 ; 0 OR -1 WIN + JUMPG 0,TFA + AOJL 0,TMA ; MORE THAN 3 + JRST ARGS3 ; GET ARGS + +; PUT + +MFUNCTION PUT,SUBR + + ENTRY + MOVE E,IIPUTP + PUSHJ P,ARGS5 ; GET ARGS + SKIPN E,IPUTBL(E) + JRST IPUTP + CAML AB,[-5,,] ; SKIP IF GOOD ARRGS + JRST TFA + SOJL C,OUTRNG + PUSH TP,4(AB) + PUSH TP,5(AB) + PUSHJ P,(E) + MOVE A,(AB) ; RET STRUCTURE + MOVE B,1(AB) + JRST FINIS + +PRDISP IPUTBL,0,[[P2WORD,LPUT],[PNWORD,UPUT],[P2NWORD,VPUT],[PARGS,APUT] +[PCHSTR,SPUT],[PTMPLT,TMPPUT]] + +; IN + +MFUNCTION IN,SUBR + + ENTRY 1 + + MOVEI B,(AB) ; POINT TO ARG + PUSHJ P,PTYPE + MOVS E,A ; REAL DISPATCH TO E + MOVE B,1(AB) + MOVE A,(AB) + GETYP C,A ; IN CASE NEEDED + PUSHJ P,@INTBL(E) + JRST FINIS + +PRDISP INTBL,OTHIN,[[P2WORD,LNTH1],[PNWORD,UIN],[P2NWORD,VIN],[PARGS,AIN] +[PCHSTR,SIN],[PTMPLT,TIN]] + +OTHIN: CAIE C,TLOCN ; ASSOCIATION LOCATIVE + JRST OTHIN1 ; MAYBE LOCD + HLLZ 0,VAL(B) + PUSHJ P,RMONCH + MOVE A,VAL(B) + MOVE B,VAL+1(B) + POPJ P, + +OTHIN1: CAIE C,TLOCD + JRST WTYP1 + JRST VIN + + +; SETLOC + +MFUNCTION SETLOC,SUBR + + ENTRY 2 + + MOVEI B,(AB) ; POINT TO ARG + PUSHJ P,PTYPE ; DO TYPE + MOVS E,A ; REAL TYPE + MOVE B,1(AB) + MOVE C,2(AB) ; PASS ARG + MOVE D,3(AB) + MOVE A,(AB) ; IN CASE + GETYP 0,A + PUSHJ P,@SETTBL(E) + MOVE A,2(AB) + MOVE B,3(AB) + JRST FINIS + +PRDISP SETTBL,OTHSET,[[P2WORD,LSTUF],[PNWORD,USTUF],[P2NWORD,VSTUF],[PARGS,ASTUF] +[PCHSTR,SSTUF],[PTMPLT,TSTUF]] + +OTHSET: CAIE 0,TLOCN ; ASSOC? + JRST OTHSE1 + HLLZ 0,VAL(B) ; GET MONITORS + PUSHJ P,MONCH + MOVEM C,VAL(B) + MOVEM D,VAL+1(B) + POPJ P, + +OTHSE1: CAIE 0,TLOCD + JRST WTYP1 + JRST VSTUF + +; LREST -- REST A LIST IN B BY AMOUNT IN C + +LREST: MOVSI A,TLIST + JUMPE C,CPOPJ + MOVEM A,BSTO(PVP) + +LREST2: INTGO ;CHECK INTERRUPTS + JUMPE B,OUTRNG ; CANT CDR NIL + HRRZ B,(B) ;CDR THE LIST + SOJG C,LREST2 ;COUNT DOWN + SETZM BSTO(PVP) ;RESET BSTO + POPJ P, + + +; VREST -- REST A VECTOR, AREST -- REST AN ARG BLOCK + +VREST: SKIPA A,$TVEC ; FINAL TYPE +AREST: HRLI A,TARGS + ASH C,1 ; TIMES 2 + JRST UREST1 + +; UREST -- REST A UVECTOR + +STORST: SKIPA A,$TSTORA +UREST: MOVSI A,TUVEC +UREST1: JUMPE C,CPOPJ + HRLI C,(C) + JUMPL C,OUTRNG + ADD B,C ; REST IT + CAILE B,-1 ; OUT OF RANGE ? + JRST OUTRNG + POPJ P, + + +; SREST -- REST A STRING + +SREST: JUMPE C,SREST1 + PUSH P,A ; SAVE TYPE WORD + PUSH P,C ; SAVE AMOUNT + MOVEI D,(A) ; GET LENGTH + CAILE C,(D) ; SKIP IF OK + JRST OUTRNG + LDB D,[366000,,B] ;POSITION FIELD OF BYTE POINTER + LDB A,[300600,,B] ;SIZE FIELD + PUSH P,A ;SAVE SIZE + IDIVI D,(A) ;COMPUT BYTES IN 1ST WORD + MOVEI 0,36. ;NOW COMPUTE BYTES PER WORD + IDIVI 0,(A) ;BYTES PER WORD IN 0 + MOVE E,0 ;COPY OF BYTES PER WORD TO E + SUBI 0,(D) ;0 # OF UNSUED BYTES IN 1ST WORD + ADDB C,0 ;C AND 0 NO.OF CHARS FROM WORD BOUNDARY + IDIVI C,(E) ;C/ REL WORD D/ CHAR IN LAST + ADDI C,(B) ;POINTO WORD WITH C + POP P,A ;RESTORE BITS PER BYTE + IMULI A,(D) ;A/ BITS USED IN LAST WORD + MOVEI 0,36. + SUBI 0,(A) ;0 HAS NEW POSITION FIELD + DPB 0,[360600,,B] ;INTO BYTE POINTER + HRRI B,(C) ;POINT TO RIGHT WORD + POP P,C ; RESTORE AMOUNT + POP P,A + SUBI A,(C) ; NEW LENGTH +SREST1: HRLI A,TCHSTR + POPJ P, + +; TMPRST -- REST A TEMPLATE DATA STRUCTURE + +TMPRST: PUSHJ P,TM.TOE ; CHECK ALL BOUNDS ETC. + MOVSI D,(D) + HLL C,D + MOVE B,C ; RET IN B + MOVSI A,TTMPLT + POPJ P, + +; LAT -- GET A LOCATIVE TO A LIST + +LAT: PUSHJ P,LREST ; GET POINTER + JUMPE B,OUTRNG ; YOU LOSE! + MOVSI A,TLOCL ; NEW TYPE + POPJ P, + + +; UAT -- GET A LOCATIVE TO A UVECTOR + +UAT: PUSHJ P,UREST + MOVSI A,TLOCU + JRST POPJL + +; VAT -- GET A LOCATIVE TO A VECTOR + +VAT: PUSHJ P,VREST ; REST IT AND TYPE IT + MOVSI A,TLOCV + JRST POPJL + +; AAT -- GET A LOCATIVE TO AN ARGS BLOCK + +AAT: PUSHJ P,AREST + HRLI A,TLOCA +POPJL: JUMPGE B,OUTRNG ; LOST + POPJ P, + +; STAT -- LOCATIVE TO A STRING + +STAT: PUSHJ P,SREST + TRNN A,-1 ; SKIP IF ANY LEFT + JRST OUTRNG + HRLI A,TLOCS ; LOCATIVE + POPJ P, + +; TAT -- LOCATIVE TO A TEMPLATE + +TAT: PUSHJ P,TMPRST + PUSH TP,A + PUSH TP,B + GETYP A,(B) ; GET REAL SAT + SUBI A,NUMSAT+1 + HRLS A ; READY TO HIT TABLE + ADD A,TD.LNT+1(TVP) + JUMPGE A,BADTPL + MOVE C,B ; DATUM TO C + XCT (A) ; GET LENGTH + HLRZS C ; REST COUNTER + SUBI B,(C) ; FLUSH IT OFF + JUMPE B,OUTRNG + MOVE B,(TP) + SUB TP,[2,,2] + MOVSI A,TLOCT + POPJ P, + + +; LNTH -- NTH OF LIST + +LNTH: PUSHJ P,LAT +LNTH1: PUSHJ P,RMONC0 ; CHECK READ MONITORS + HLLZ A,(B) ; GET GOODIE + MOVE B,1(B) + JSP E,CHKAB ; HACK DEFER + POPJ P, + +; VNTH -- NTH A VECTOR, ANTH -- NTH AN ARGS BLOCK + +ANTH: PUSHJ P,AAT + JRST .+2 + +VNTH: PUSHJ P,VAT +AIN: +VIN: PUSHJ P,RMONC0 + MOVE A,(B) + MOVE B,1(B) + POPJ P, + +; UNTH -- NTH OF UVECTOR + +UNTH: PUSHJ P,UAT +UIN: HLRE C,B ; FIND DW + SUBM B,C + HLLZ 0,(C) ; GET MONITORS + MOVE D,0 + TLZ D,TYPMSK#<-1> + PUSH P,D + PUSHJ P,RMONCH ; CHECK EM + POP P,A + MOVE B,(B) ; AND VALUE + POPJ P, + + +; SNTH -- NTH A STRING + +SNTH: PUSHJ P,STAT +SIN: PUSH TP,A + PUSH TP,B ; SAVE POINT BYTER + MOVEI C,-1(TP) ; FIND DOPE WORD + PUSHJ P,BYTDOP + HLLZ 0,-1(A) ; GET + POP TP,B + POP TP,A + PUSHJ P,RMONCH + ILDB B,B ; GET CHAR + MOVSI A,TCHRS + POPJ P, + +; TIN -- IN OF A TEMPLATE + +TIN: MOVEI C,0 + +; TMPLNT -- NTH A TEMPLATE DATA STRUCTURE + +TMPLNT: ADDI C,1 + PUSHJ P,TM.TOE ; GET POINTER TO INS IN E + ADD A,TD.GET+1(TVP) ; POINT TO GETTER + MOVE A,(A) ; GET VECTOR OF INS + ADDI E,-1(A) ; POINT TO INS + SUBI D,1 + XCT (E) ; DO IT + POPJ P, ; RETURN + +; LPUT -- PUT ON A LIST + +LPUT: PUSHJ P,LAT ; POSITION + POP TP,D + POP TP,C + +; LSTUF -- HERE TO STUFF A LIST ELEMENT + +LSTUF: PUSHJ P,MONCH0 ; CHECK OUT MONITOR BITS + GETYP A,C ; ISOLATE TYPE + PUSHJ P,NWORDT ; NEED TO DEFER? + SOJN A,DEFSTU + HLLM C,(B) + MOVEM D,1(B) ; AND VAL + POPJ P, + +DEFSTU: PUSH TP,$TLIST + PUSH TP,B + PUSH TP,C + PUSH TP,D + PUSHJ P,CELL2 ; GET WORDS + POP TP,1(B) + POP TP,(B) + MOVE E,(TP) + SUB TP,[2,,2] + MOVEM B,1(E) + HLLZ 0,(E) ; GET OLD MONITORS + TLZ 0,TYPMSK ; KILL TYPES + TLO 0,TDEFER ; MAKE DEFERRED + HLLM 0,(E) + POPJ P, + +; VPUT -- PUT ON A VECTOR , APUT -- PUT ON AN RG BLOCK + +APUT: PUSHJ P,AAT + JRST .+2 + +VPUT: PUSHJ P,VAT ; TREAT LIKE VECTOR + POP TP,D ; GET GOODIE BACK + POP TP,C + +; AVSTUF -- CLOBBER ARGS AND VECTORS + +ASTUF: +VSTUF: PUSHJ P,MONCH0 + MOVEM C,(B) + MOVEM D,1(B) + POPJ P, + + + + +; UPUT -- CLOBBER A UVECTOR + +UPUT: PUSHJ P,UAT ; GET IT RESTED + POP TP,D + POP TP,C + +; USTUF -- HERE TO CLOBBER A UVECTOR + +USTUF: HLRE E,B + SUBM B,E ; C POINTS TO DOPE + GETYP A,(E) ; GET UTYPE + GETYP 0,C + CAIE 0,(A) ; CHECK SAMENESS + JRST WRNGUT + HLLZ 0,(E) ; MONITOR BITS IN DOPE WORD + MOVSI A,TUVEC + PUSHJ P,MONCH + MOVEM D,(B) ; SMASH + POPJ P, + +; SPUT -- HERE TO PUT A STRING + +SPUT: PUSHJ P,STAT ; REST IT + POP TP,D + POP TP,C + +; SSTUF -- STUFF A STRING + +SSTUF: GETYP 0,C ; BETTER BE CHAR + CAIE 0,TCHRS + JRST WTYP3 + PUSH TP,A + PUSH TP,B + MOVEI C,-1(TP) ; FIND D.W. + PUSHJ P,BYTDOP + HLLZ 0,(A)-1 ; GET MONITORS + POP TP,B + POP TP,A + MOVSI C,TCHRS + PUSHJ P,MONCH + IDPB D,B ; STASH + POPJ P, + +; TSTUF -- SETLOC A TEMPLATE + +TSTUF: PUSH TP,C + PUSH TP,D + MOVEI C,0 + +; PUTTMP -- TEMPLATE PUTTER + +TMPPUT: ADDI C,1 + PUSHJ P,TM.TOE ; GET E POINTING TO SLOT # + ADD A,TD.PUT+1(TVP) ; POINT TO INS + MOVE A,(A) ; GET VECTOR OF INS + ADDI E,-1(A) + POP TP,B ; NEW VAL TO A AND B + POP TP,A + SUBI D,1 + XCT (E) ; DO IT + JRST BADPUT + POPJ P, + +TM.LN1: SUBI 0,NUMSAT+1 + HRRZ A,0 ; RET FIXED OFFSET + HRLS 0 + ADD 0,TD.LNT+1(TVP) ; USE LENGTHERS FOR TEST + JUMPGE 0,BADTPL + PUSH P,C + MOVE C,B + HRRZS 0 ; POINT TO TABLE ENTRY + PUSH P,A + XCT @0 ; DO IT + POP P,A + POP P,C + POPJ P, + +TM.TBL: MOVEI E,(D) ; TENTATIVE WINNER IN E + TLNN B,-1 ; SKIP IF REST HAIR EXISTS + POPJ P, ; NO, WIN + + PUSH P,A ; SAVE OFFSET + HRLS A ; A IS REL OFFSET TO INS TABLE + ADD A,TD.GET+1(TVP) ; GET ONEOF THE TABLES + MOVE A,(A) ; TABLE POINTER TO A + MOVSI 0,-1(D) ; START SEEING IF PAST TEMP SPEC + ADD 0,A + JUMPL 0,CPOPJA ; JUMP IF E STILL VALID + HLRZ E,B ; BASIC LENGTH TO E + HLRE 0,A ; LENGTH OF TEMPLATE TO 0 + ADDI 0,(E) ; 0 ==> # ELEMENTS IN REPEATING SEQUENCE + MOVNS 0 + SUBM D,E ; E ==> # PAST BASIC WANTED + EXCH 0,E + IDIVI 0,(E) ; A ==> REL REST GUY WANTED + HLRZ E,B + ADDI E,1(A) +CPOPJA: POP P,A + POPJ P, + +; TM.TOE -- GET RIGHT TEMPLATE # IN E +; C/ OBJECT #, B/ OBJECT POINTER + +TM.TOE: GETYP 0,(B) ; GET REAL SAT + MOVEI D,(C) ; OBJ # TO D + HLRZ C,B ; REST COUNT + ADDI D,(C) ; FUDGE FOR REST COUNTER + MOVE C,B ; POINTER TO C + PUSHJ P,TM.LN1 ; GET LENGTH IN B (WATCH LH!) + CAILE D,(B) ; CHECK RANGE + JRST OUTRNG ; LOSER, QUIT + JRST TM.TBL ; GO COMPUTE TABLE OFFSET + + ; ROUTINE FOR COMPILER CALLS RETS CODE IN E GOODIE IN A AND B +; FIXES (P) + +CPTYEE: MOVE E,A + GETYP A,A + PUSHJ P,CPTYPE + JUMPE A,COMPERR + SUBM M,-1(P) + EXCH E,A + POPJ P, + +; COMPILER CALLS TO MANY OF THESE GUYS + +CIREST: PUSHJ P,CPTYEE ; TYPE OF DISP TO E + JUMPL C,OUTRNG + CAIN 0,SSTORE + JRST CIRST1 + PUSHJ P,@RESTBL(E) + JRST MPOPJ + +CIRST1: PUSHJ P,STORST + JRST MPOPJ + +CINTH: PUSHJ P,CPTYEE + SOJL C,OUTRNG ; CHECK BOUNDS + PUSHJ P,@NTHTBL(E) + JRST MPOPJ + +CIAT: PUSHJ P,CPTYEE + SOJL C,OUTRNG + PUSHJ P,@ATTBL(E) + JRST MPOPJ + +CSETLO: PUSHJ P,CTYLOC + MOVSS E ; REAL DISPATCH + GETYP 0,A ; INCASE LOCAS OR LOCD + PUSH TP,C + PUSH TP,D + PUSHJ P,@SETTBL(E) + POP TP,B + POP TP,A + JRST MPOPJ + +CIN: PUSHJ P,CTYLOC + MOVSS E ; REAL DISPATCH + GETYP C,A + PUSHJ P,@INTBL(E) + JRST MPOPJ + +CTYLOC: MOVE E,A + GETYP A,A + PUSHJ P,CPTYPE + SUBM M,-1(P) + EXCH A,E + POPJ P, + +; COMPILER'S PUT,GET AND GETL + +CIGET: PUSH P,[0] + JRST .+2 + +CIGETL: PUSH P,[1] + MOVE E,A + GETYP A,A + PUSHJ P,CPTYPE + EXCH A,E + JUMPE E,CIGET1 ; REAL GET, NOT NTH + GETYP 0,C ; INDIC FIX? + CAIE 0,TFIX + JRST CIGET1 + POP P,E ; GET FLAG + AOS (P) ; ALWAYS SKIP + MOVE C,D ; # TO AN AC + JRST @.+1(E) + CINTH + CIAT + +CIGET1: POP P,E ; GET FLAG + JRST @GETTR(E) ; DO A REAL GET + +GETTR: CIGTPR + CIGETP + +CIPUT: SUBM M,(P) + MOVE E,A + GETYP A,A + PUSHJ P,CPTYPE + EXCH A,E + PUSH TP,-1(TP) ; PAIN AND SUFFERING + PUSH TP,-1(TP) + MOVEM A,-3(TP) + MOVEM B,-2(TP) + JUMPE E,CIPUT1 + GETYP 0,C + CAIE 0,TFIX ; YES DO STRUCT + JRST CIPUT1 + MOVE C,D + SOJL C,OUTRNG ; CHECK BOUNDS + PUSHJ P,@IPUTBL(E) +PMPOPJ: POP TP,B + POP TP,A + JRST MPOPJ + +CIPUT1: PUSHJ P,IPUT + JRST PMPOPJ + +; SMON -- SET MONITOR BITS +; B/ +; D/ OR +; E/ BITS + +SMON: GETYP A,(B) + PUSHJ P,PTYPE ; TO PRIM TYPE + HLRZS A + SKIPE A,SMONTB(A) ; DISPATCH? + JRST (A) + +; COULD STILL BE LOCN OR LOCD + + GETYP A,(B) ; TYPE BACK + CAIE A,TLOCN + JRST SMON2 ; COULD BE LOCD + MOVE C,1(B) ; POINT + HRRI D,VAL(C) ; MAKE INST POINT + JRST SMON3 + +SMON2: CAIE A,TLOCD + JRST WRONGT + + +; SET LIST/TUPLE/ID LOCATIVE + +SMON4: HRR D,1(B) ; POINT TO TYPE WORD +SMON3: XCT D + POPJ P, + +; SET UVEC LOC + +SMON5: HRRZ C,1(B) ; POINT TO TOP OF UV + HLRE 0,1(B) + SUB C,0 ; POINT TO DOPE + HRRI D,(C) ; POINT IN INST + JRST SMON3 + +; SET CHSTR LOC + +SMON6: MOVEI C,(B) ; FOR BYTDOP + PUSHJ P,BYTDOP ; POINT TO DOPE + HRRI D,(A)-1 + JRST SMON3 + +PRDISP SMONTB,0,[[P2WORD,SMON4],[P2NWOR,SMON4],[PARGS,SMON4] +[PNWORD,SMON5],[PCHSTR,SMON6]] + + +; COMPILER'S MONAD? + +CIMON: PUSH P,A + GETYP A,A + PUSHJ P,CPTYPE + JUMPE A,CIMON1 + POP P,A + JRST CEMPTY + +CIMON1: POP P,A + JRST YES + +; FUNCTION TO DECIDE IF FURTHER DECOMPOSITION POSSIBLE + +MFUNCTION MONAD,SUBR,MONAD? + + ENTRY 1 + + MOVE B,AB ; CHECK PRIM TYPE + PUSHJ P,PTYPE + JUMPE A,ITRUTH ;RETURN ARGUMENT + SKIPE B,1(AB) + JRST @MONTBL(A) ;DISPATCH ON PTYPE + JRST ITRUTH + +PRDISP MONTBL,IFALSE,[[P2NWORD,MON1],[PNWORD,MON1],[PARGS,MON1] +[PCHSTR,CHMON],[PTMPLT,TMPMON]] + +MON1: JUMPGE B,ITRUTH ;EMPTY VECTOR + JRST IFALSE + +CHMON: HRRZ B,(AB) + JUMPE B,ITRUTH + JRST IFALSE + +TMPMON: PUSHJ P,LNTMPL + JUMPE B,ITRUTH + JRST IFALSE + +CISTRU: GETYP A,A ; COMPILER CALL + PUSHJ P,ISTRUC + JRST NO + JRST YES + +ISTRUC: PUSHJ P,SAT ; STORAGE TYPE + SKIPE A,PRMTYP(A) + AOS (P) ; SKIP IF WINS + POPJ P, + +; SUBR TO CHECK FOR LOCATIVE + +MFUNCTION %LOCA,SUBR,[LOCATIVE?] + + ENTRY 1 + GETYP A,(AB) + PUSHJ P,LOCQQ + JRST IFALSE + JRST ITRUTH + +; SKIPS IF TYPE IN A IS A LOCATIVE + +LOCQ: GETYP A,(B) ; GET TYPE +LOCQQ: PUSH P,A ; SAVE FOR LOCN/LOCD + PUSHJ P,SAT + MOVE A,PRMTYP(A) + JUMPE A,LOCQ1 + SUB P,[1,,1] + TRNN A,-1 +LOCQ2: AOS (P) + POPJ P, + +LOCQ1: POP P,A ; RESTORE TYPE + CAIE A,TLOCN + CAIN A,TLOCD + JRST LOCQ2 + POPJ P, + + +; MUDDLE SORT ROUTINE + +; P-STACK OFFSETS MUDDLE SORT ROUTINE + +; P-STACK OFFSETS FOR THIS PROGRAM + +XCHNG==0 ; FLAG SAYING AN EXCHANGE HAS HAPPENED +PLACE==-1 ; WHERE WE ARE NOW +UTYP==-2 ; TYPE OF UNIFORM VECTOR +DELT==-3 ; DIST BETWEEN COMPARERS + +MFUNCTION SORT,SUBR + + ENTRY + + HLRZ 0,AB ; CHECK FOR ENOUGH ARGS + CAILE 0,-4 + JRST TFA + GETYP A,(AB) ; 1ST MUST EITHER BE FALSE OR APPLICABLE + CAIN A,TFALSE + JRST SORT1 ; FALSE, OK + PUSHJ P,APLQ ; IS IT APPLICABLE + JRST NAPT ; NO, LOSER + +SORT1: MOVE B,AB + ADD B,[2,,2] ; BUMP TO POINT TO MAIN ARRAY + SETZB D,E ; 0 # OF STUCS AND LNTH + +SORT2: GETYP A,(B) ; GET ITS TYPE + PUSHJ P,PTYPE ; IS IT STRUCTURED? + MOVEI C,1 ; CHECK TYPE OF STRUC + CAIN A,PNWORD ; UVEC? + MOVEI C,0 ; YUP + CAIE A,PARGS + CAIN A,P2NWORD ; VECTOR + MOVNI C,1 + JUMPG C,WTYP + PUSH TP,(B) ; PUSH IT + PUSH TP,1(B) + ADD B,[2,,2] ; GO ON + MOVEI A,1 ; DEFAULT REC SIZE + PUSHJ P,NXFIX ; SIZE OF RECORD? + HLRZ 0,-2(TP) ; -LNTH OF STUC + HRRZ A,(TP) ; LENGTH OF REC + IDIVI 0,(A) ; DIV TO GET - # OF RECS + SKIPN D ; PREV LENGTH EXIST? + MOVE D,0 ; NO USE THIS + CAME 0,D + JRST SLOSE0 + MOVEI A,0 ; DEF REC SIZE + PUSHJ P,NXFIX ; AND OFFSET OF KEY + SUBI E,1 + JUMPL B,SORT2 ; GO ON + HRRM E,4(TB) ; SAVE THAT IN APPROPRIATE PLACE + + MOVE 0,3(TB) + CAMG 0,5(TB) ; CHECK FOR BAD OFFSET + JRST SLOSE3 + +; NOW CHECK WHATEVER STUCTURE THIS IS IS UNIFORM AND HAS GOOD ELEMENTS + + HLRE B,1(TB) ; COMP LENGTH + MOVNS B + HRRZ C,2(TB) ; GET VEC/UVEC FLAG + MOVEI D,(B) + ASH B,(C) ; FUDGE + JUMPE C,.+3 ; SKIP FOR UVEC + MOVE 0,[1,,1] ; ELSE FUDGE KEY OFFSET + ADDM 0,5(TB) + HRRZ 0,3(TB) ; GET REC LENGTH + IDIV D,0 ; # OF RECS + JUMPN E,SLOSE4 + CAIG D,1 ; MORE THAN 1? + JRST SORTD ; NO, DONE ALREADY + GETYP 0,(AB) ; TYPE OF COMPARER + CAIE 0,TFALSE ; IF FALSE, STRUCT MUST CONTAIN FIX,FLOAT,ATOM OR STRING + JRST SORT3 ; USER SUPPLIED COMPARER, LET HIM WORRY + +; NOW CHECK OUT ELEMENT TYPES + + JUMPN C,SORT5 ; JUMP IF GENERAL + MOVEI D,1(B) ; FIND END OF VECTOR + ADD D,1(TB) ; D POINTS TO END + PUSHJ P,TYPCH1 ; GET TYPE AND CHECK IT + JRST SORT6 + +SORT5: MOVE D,1(TB) ; POINT TO VEC + ADD D,5(TB) ; INTO REC TO KEY + PUSHJ P,TYPCH1 + +SAMELP: GETYP C,-1(D) ; GET TYPE + CAIE 0,(C) ; COMPARE TYPE + JRST SLOSE2 + ADD D,3(TB) ; TO NEXT RECORD + JUMPL D,SAMELP + +SORT6: CAIE A,S1WORD ; 1 WORDS? + JRST SORT7 + MOVEI E,INTSRT + MOVSI A,400000 ; SET UP MASK +SORT9: PUSHJ P,ISORT + MOVE A,2(AB) + MOVE B,3(AB) + JRST FINIS + +SORT7: CAIE A,SATOM ; ATOMS? + JRST SORT8 + MOVE E,[-3,,ATMSRT] ; SET UP FOR ATOMS + MOVE A,[430140,,3(D)] ; BIT POINTER FOR ATOMS + JRST SORT9 + +SORT8: MOVE E,[1,,STRSRT] ; MUST BE STRING SORT + MOVE A,[430140,,(D)] ; BYTE POINTER FOR STRINGER + JRST SORT9 + +; TABLES FOR RADIX SORT CHECKERS + +INTSRT==0 +ATMSRT==1 +STRSRT==2 + +TST1: PUSHJ P,I.TST1 + PUSHJ P,A.TST1 + PUSHJ P,S.TST1 + +TST2: PUSHJ P,I.TST2 + PUSHJ P,A.TST2 + PUSHJ P,S.TST2 + +NXBIT: ROT A,-1 + PUSHJ P,A.NXBI + PUSHJ P,S.NXBI + +PREBIT: ROT A,1 + PUSHJ P,A.PREB + PUSHJ P,S.PREB + +ENDTST: SKIPGE A + TLOE A,40 + TLOE A,40 + +; INTEGER SORT SPECIFIC ROUTINES + +I.TST1: JUMPL A,I.TST3 +I.TST4: TDNE A,(D) + AOS (P) + POPJ P, + +I.TST2: JUMPL A,I.TST4 +I.TST3: TDNN A,(D) + AOS (P) + POPJ P, + +; ATOM SORT SPECIFIC ROUTINES + +A.TST1: MOVE D,(D) ; GET AN ATOM + CAMG E,D ; SKIP IF NOT EXHAUSTED + POPJ P, + TLZ A,40 ; TELL A BIT HAS HAPPENED + LDB D,A ; GET THE BIT + SKIPE D + AOS (P) ; SKIP IF ON + POPJ P, + +A.TST2: PUSHJ P,A.TST1 ; USE OTHER ROUTINE + AOS (P) + POPJ P, + +A.NXBI: TLNN A,770000 ; CHECK FOR WORD CHANGE + SUB E,[1,,0] ; FIX WORD CHECKER + IBP A + POPJ P, + +A.PREB: ADD A,[10000,,] ; AH FOR A DECR BYTE POINTER + SKIPG A + CAMG A,[437777,,-1] ; SKIP IF BACKED OVER WORD + POPJ P, + TLZ A,770000 ; CLOBBER POSIT FIELD + SUBI A,1 ; DECR WORD POS FIELD + ADD E,[1,,0] ; AND FIX WORD HACKER + POPJ P, + +; STRING SPECIFIC SORT ROUTINES + +S.TST1: HRLZ 0,-1(D) ; LENGTH OF STRING + IMULI 0,7 ; IN BITS + HRRI 0,-1 ; MAKE SURE BIGGER RH + CAMG 0,E ; SKIP IF MORE BITS LEFT + POPJ P, ; DON TSKIP + TLZ A,40 ; BIT FOUND + HLRZ 0,(D) ; CHECK FOR SIMPLE CASE + HRRZ D,(D) ; POINT TO STRING + CAIN 0,440700 ; SKIP IF HAIRY + JRST S.TST3 + + PUSH P,A ; SAVE BYTER + MOVEI A,440700 ; COMPUTE BITS NOT USED 1ST WORD + SUBI A,@0 + HLRZ 0,(P) ; GET BIT POINTER + SUBI 0,(A) ; UPDATE POS FIELD + JUMPGE 0,.+2 ; NO NEED FOR NEXT WORD + ADD 0,[1,,440000] + MOVSS 0 + HRRZ A,(P) ; REBUILD BYTE POINTER + ADDI 0,(A) + LDB 0,0 ; GET THE DAMN BYTE + POP P,A + JRST .+2 + +S.TST3: LDB 0,A ; GET BYTE FOR EASY CASE + SKIPE 0 + AOS (P) + POPJ P, + +S.TST2: PUSHJ P,S.TST1 + AOS (P) + POPJ P, + +S.NXBI: IBP A ; BUMP BYTER + TLNN A,770000 ; SKIP IF NOT END BIT + IBP A ; SKIP END BIT (NOT USED IN ASCII STRINGS) + ADD E,[1,,0] ; COUNT BIT + POPJ P, + +S.PREB: SUB E,[1,,0] ; DECR CHAR COUNT + ADD A,[10000,,0] ; PLEASE GIVE ME A DECRBYTEPNTR + SKIPG A + CAMG A,[437777,,-1] + POPJ P, + TLC A,450000 ; POINT TO LAST USED BIT IN WORD + SUBI A,1 + POPJ P, + +; SIMPLE RADIX EXCHANGE + +ISORT: MOVE B,1(TB) ; START OF VECTOR + HLRE D,B ; COMPUTE POINTER TO END OF IT + SUBM B,D ; FIND END + MOVEI C,(D) + +ISORT1: PUSH TP,(TB) + PUSH TP,C + MOVE 0,C ; SEE IF HAVE MET AT MIDDLE + SUB 0,3(TB) + ANDI 0,-1 + CAIGE 0,(B) + JRST ISORT7 ; HAVE MET, LEAVE + PUSH TP,(TB) ; SAVE OTHER POINTER + PUSH TP,B + + INTGO + MOVE B,(TP) ; IN CASE MOVED + MOVE C,-2(TP) + +ISORT3: HRRZ D,5(TB) ; OFFSET TO KEY + ADDI D,(B) ; POINT TO KEY + XCT TST1(E) ; CHECK FOR LOSER + JRST ISORT4 + SUB C,3(TB) ; IS THERE ONE TO EXCHANGE WITH + HRRZ D,5(TB) + ADDI D,(C) + XCT TST2(E) ; SKIP IF A POSSIBLE EXCHANGE + JRST ISORT2 ; NO EXCH, KEEP LOOKING + + PUSHJ P,EXCHM ; DO THE EXCHANGE + +ISORT4: ADD B,3(TB) ; HAVE EXCHANGED, MOVE ON +ISORT2: CAME B,C ; MET? + JRST ISORT3 ; MORE TO CHECK + XCT NXBIT(E) ; NEXT BIT + MOVE B,(TP) ; RESTORE TOP POINTER + SUB TP,[2,,2] ; FLUSH IT + XCT ENDTST(E) + JRST ISORT6 + PUSHJ P,ISORT1 ; SORT SUB AREA + MOVE C,(TP) ; AND OTHER SUB AREA + PUSHJ P,ISORT1 +ISORT6: XCT PREBIT(E) +ISORT7: MOVE B,(TP) + SUB TP,[2,,2] + POPJ P, + +; SCHELL SORT FOR USER SUPPLIED COMPARER + +SORT3: ADDI D,1 + ASH D,-1 ; COMPUTE INITIAL D + PUSH P,D ; AND SAVE IT + PUSH P,[0] ; MAY HOLD UTYPE OF VECTOR + HRRZ 0,(TB) ; 0 NON ZERO MEANS GEN VECT + JUMPN 0,SSORT1 ; DONT COMPUTE UTYPE + HLRE C,1(TB) + HRRZ D,1(TB) ; FIND TYPE + SUBI D,(C) + GETYP D,(D) + MOVSM D,(P) ; AND SAVE +SSORT1: PUSH P,[0] ; CURRENT PLACE IN VECTOR + PUSH P,[0] ; EXCHANGE FLAG + PUSH TP,[0] + PUSH TP,[0] + +; OUTER LOOP STARTS HERE + +OUTRLP: SETZM XCHNG(P) ; NO EXHCANGE YET + SETZM PLACE(P) + +INRLP: PUSH TP,(AB) ; PUSH USER COMPARE FCN + PUSH TP,1(AB) + MOVE C,PLACE(P) ; GET CURRENT PLACE + ADD C,1(TB) ; ADD POINTER TO VEC IN + ADD C,5(TB) ; OFFSET TO KEY + PUSHJ P,GETELM + MOVE D,3(TB) + IMUL D,DELT(P) ; TIMES WORDS PER REC + ADD C,D + PUSHJ P,GETELM + MCALL 3,APPLY ; APPLY IT + GETYP 0,A ; TYPE OF RETURN + CAIN 0,TFALSE ; SKIP IF MUST CHANGE + JRST INRLP1 + + MOVE C,1(TB) ; POINT TO START + ADD C,PLACE(P) + MOVE B,3(TB) + IMUL B,DELT(P) + ADD B,C + PUSHJ P,EXCHM ; EXCHANGE THEM + SETOM XCHNG(P) ; SAY AN EXCHANGE TOOK PLACE + +INRLP1: MOVE C,3(TB) ; GET OFFSET + ADDB C,PLACE(P) + MOVE D,3(TB) + IMUL D,DELT(P) + ADD C,D ; CHECK FOR OVERFLOW + ADD C,1(TB) + JUMPL C,INRLP + SKIPE XCHNG(P) ; ANY EXCHANGES? + JRST OUTRLP ; YES, RESET PLACE AND GO + SOSG D,DELT(P) ; SKIP IF DIST WAS 1 + JRST SORTD + ADDI D,2 ; COMPUTE NEW DIST + ASH D,-1 + MOVEM D,DELT(P) + JRST OUTRLP + +SORTD: MOVE A,2(AB) ; DONE, RET 1ST STRUC + MOVE B,3(AB) + JRST FINIS + +; ROUTINE TO GET NEXT ARG IF ITS FIX + +NXFIX: JUMPGE B,NXFIX1 ; NONE LEFT, USE DEFAULT + GETYP 0,(B) ; TYPE + CAIE 0,TFIX ; FIXED? + JRST NXFIX1 ; NO, USE DEFAULT + MOVE A,1(B) ; GET THE NUMBER + ADD B,[2,,2] ; BUMP TO NEXT ARG +NXFIX1: HRLI C,TFIX + TRNE C,-1 ; SKIP IF UV + ASH A,1 ; FUDGE FOR VEC/UVEC + HRLI A,(A) + PUSH TP,C + PUSH TP,A + POPJ P, + +GETELM: SKIPN A,UTYP-1(P) ; SKIP IF UVECT + MOVE A,-1(C) ; GGET GEN TYPE + PUSH TP,A + PUSH TP,(C) + POPJ P, + +TYPCH1: GETYP A,-1(D) ; GET TYPE + MOVEI 0,(A) ; SAVE IN 0 + PUSHJ P,SAT ; AND SAT + CAIE A,SCHSTR ; STRING + CAIN A,SATOM + POPJ P, + CAIN A,S1WORD ; 1-WORD GOODIE + POPJ P, + JRST SLOSE1 + +; HERE TO DO EXCHANGE + +EXCHM: PUSH P,E + PUSH P,A ; SAVE VITAL ACS + PUSH P,B + PUSH P,C + SUB B,1(TB) ; COMPUTE RECORD # + HLRZS B ; TO RH + HRRZ 0,3(TB) ; GET REC LENGTH + IDIV B,0 ; DIV BY REC LENGTH + MOVE C,(P) + SUB C,1(TB) ; SAME FOR C + HLRZS C + IDIV C,0 ; NOW HAVE OTHER RECORD + + HRRE D,4(TB) ; - # OF STUCS + MOVSI D,(D) ; MAKE AN AOBJN POINTER + HRRI D,(TB) ; TO TEMPPS + +RECLP: HRRZ 0,3(D) ; GET REC LENGTH + MOVN E,3(D) ; NOW AOBJN TO REC + MOVSI E,(E) + HRR E,1(D) + MOVEI A,(C) ; COMP START OF REC + IMUL A,0 ; TIMES REC LENGTH + ADDI E,(A) + MOVEI A,(B) + IMUL A,0 + ADD A,1(D) ; POINT TO OTHER RECORD + +EXCHLP: EXCH 0,(A) + EXCH 0,(E) + EXCH 0,(A) + ADDI A,1 + AOBJN E,EXCHLP + + ADD D,[1,,6] ; TO NEXT STRUC + JUMPL D,RECLP ; IF MORE + + POP P,C + POP P,B + POP P,A + POP P,E + POPJ P, + +; FUNCTION TO DETERMINE MEMBERSHIP IN LISTS AND VECTORS + +MFUNCTION MEMBER,SUBR + + MOVE E,[PUSHJ P,EQLTST] ;TEST ROUTINE IN E + JRST MEMB + +MFUNCTION MEMQ,SUBR + + MOVE E,[PUSHJ P,EQTST] ;EQ TESTER + +MEMB: ENTRY 2 + MOVE B,AB ;POINT TO FIRST ARG + PUSHJ P,PTYPE ;CHECK PRIM TYPE + ADD B,[2,,2] ;POINT TO 2ND ARG + PUSHJ P,PTYPE + JUMPE A,WTYP2 ;2ND WRONG TYPE + PUSH TP,(AB) + PUSH TP,1(AB) + MOVE C,2(AB) ; FOR TUPLE CASE + SKIPE B,3(AB) ;GOBBLE LIST VECTOR ETC. POINTER + PUSHJ P,@MEMTBL(A) ;DISPATCH + JRST IFALSE ;OR REPORT LOSSAGE + JRST FINIS + +PRDISP MEMTBL,IWTYP2,[[P2WORD,MEMLST],[PNWORD,MUVEC],[P2NWORD,MEMVEC] +[PARGS,MEMTUP],[PCHSTR,MEMCH],[PTMPLT,MEMTMP]] + + + +MEMLST: MOVSI 0,TLIST ;SET B'S TYPE TO LIST + MOVEM 0,BSTO(PVP) + JUMPE B,MEMLS6 ; EMPTY LIST LOSE IMMEDIATE + +MEMLS1: INTGO ;CHECK INTERRUPTS + MOVEI C,(B) ;COPY POINTER + GETYP D,(C) ;GET TYPE + MOVSI A,(D) ;COPY + CAIE D,TDEFER ;DEFERRED? + JRST MEMLS2 + MOVE C,1(C) ;GET DEFERRED DATUM + GETYPF A,(C) ;GET FULL TYPE WORD +MEMLS2: MOVE C,1(C) ;GET DATUM + XCT E ;DO THE COMPARISON + JRST MEMLS3 ;NO MATCH + MOVSI A,TLIST +MEMLS5: AOS (P) +MEMLS6: SETZM BSTO(PVP) ;RESET B'S TYPE + POPJ P, + +MEMLS3: HRRZ B,(B) ;STEP THROGH + JUMPN B,MEMLS1 ;STILL MORE TO DO +MEMLS4: MOVSI A,TFALSE ;RETURN FALSE + JRST MEMLS6 ;RETURN 0 + +MEMTUP: HRRZ A,C + TLOA A,TARGS +MEMVEC: MOVSI A,TVEC ;CLOBBER B'S TYPE TO VECTOR + JUMPGE B,MEMLS4 ;EMPTY VECTOR + MOVEM A,BSTO(PVP) + +MEMV1: INTGO ;CHECK FOR INTS + GETYPF A,(B) ;GET FULL TYPE + MOVE C,1(B) ;AND DATA + XCT E ;DO COMPARISON INS + JRST MEMV2 ;NOT EQUAL + MOVE A,BSTO(PVP) + JRST MEMLS5 ;RETURN WITH POINTER + +MEMV2: ADD B,[2,,2] ;INCREMENT AND GO + JUMPL B,MEMV1 ;STILL WINNING +MEMV3: MOVEI B,0 + JRST MEMLS4 ;AND RETURN FALSE + +MUVEC: JUMPGE B,MEMLS4 + GETYP A,-1(TP) ;GET TYPE OF GODIE + HLRE C,B ;LOOK FOR UNIFORM TYPE + SUBM B,C ;DOPE POINTER TO C + GETYP C,(C) ;GET THE TYPE + CAIE A,(C) ;ARE THEY THE SAME? + JRST MEMLS4 ;NO, LOSE + MOVSI A,TUVEC + CAIN 0,SSTORE + MOVSI A,TSTORA + PUSH P,A + MOVEM A,BSTO(PVP) + MOVSI A,(C) ;TYPE TO LH + PUSH P,A ; SAVE FOR EACH TEST + +MUVEC1: INTGO ;CHECK OUT INTS + MOVE C,(B) ;GET DATUM + MOVE A,(P) ; GET TYPE + XCT E ;COMPARE + AOBJN B,MUVEC1 ;LOOP TO WINNAGE + SUB P,[1,,1] + POP P,A + JUMPGE B,MEMV3 ;LOSE RETURN + +MUVEC2: JRST MEMLS5 + + +MEMCH: GETYP A,-1(TP) ;IS ARG A SINGLE CHAR + CAIE A,TCHRS ;SKIP IF POSSIBLE WINNER + JRST MEMSTR + MOVEI 0,(C) + MOVE D,(TP) ; AND CHAR + +MEMCH1: SOJL 0,MEMV3 + MOVE E,B + ILDB A,B + CAIE A,(D) ;CHECK IT + SOJA C,MEMCH1 + +MEMCH2: MOVE B,E + MOVE A,C + JRST MEMLS5 + +MEMSTR: CAME E,[PUSHJ P,EQLTST] + JRST MEMV3 + HLRZ A,C + CAIE A, TCHSTR ; A SHOULD HAVE TCHSTR IN RIGHT HALF + JRST MEMV3 + MOVEI 0,(C) ; GET # OF CHAR INTO 0 + ILDB D,(TP) + PUSH P,D ; PUTS 1ST CHAR OF 1ST ARG ONTO STACK + +MEMST1: SOJL 0,MEMLS ; HUNTS FOR FIRST MATCHING CHAR + MOVE E,B + ILDB A,B + CAME A,(P) + SOJA C,MEMST1 ; MATCH FAILS TRY NEXT + + PUSH P,B + PUSH P,E + PUSH P,C + PUSH P,0 + MOVE E,(TP) ; MATCH WINS SAVE OLD VALUES FOR FAILING LOOP + HRRZ C,-1(TP) ; LENGTH OF 1ARG +MEMST2: SOJE C,MEMWN ; WON -RAN OUT OF 1ARG FIRST- + SOJL MEMLSR ; LOST -RAN OUT OF 2ARG- + ILDB A,B + ILDB D,E + CAIN A,(D) ; SKP IF POSSIBLY LOST -BACK TO MEMST1- + JRST MEMST2 + + POP P,0 + POP P,C + POP P,E + POP P,B + SOJA C,MEMST1 + +MEMWN: MOVE B,-2(P) ; SETS UP ARGS LIKE MEMCH2 - HAVE WON + MOVE A,-1(P) + SUB P,[5,,5] + JRST MEMLS5 + +MEMLSR: SUB P,[5,,5] + JRST MEMV3 + +MEMLS: SUB P,[1,,1] + JRST MEMV3 + +; MEMBERSHIP FOR TEMPLATE HACKER + +MEMTMP: GETYP 0,(B) ; GET REAL SAT + PUSH P,E + PUSH P,0 + PUSH TP,A + PUSH TP,B ; SAVE GOOEIE + PUSHJ P,TM.LN1 ; GET LENGTH + MOVEI B,(B) + HLRZ A,(TP) ; FUDGE FOR REST + SUBI B,(A) + PUSH P,B ; SAVE LENGTH + PUSH P,[-1] + POP TP,B + POP TP,A + MOVEM A,BSTO+1(PVP) + +MEMTM1: SETZM BSTO(PVP) + AOS C,(P) + SOSGE -1(P) + JRST MEMTM2 + MOVE 0,-2(P) + PUSHJ P,TMPLNT ; GET ITEM + EXCH C,B ; VALUE TO C, POINTER BACK TO B + MOVE E,-3(P) + MOVSI 0,TTMPLT + MOVEM 0,BSTO(PVP) + XCT E + JRST MEMTM1 + + HRL B,(P) ; DO APPROPRIATE REST + AOS -4(P) +MEMTM2: SUB P,[4,,4] + MOVSI A,TTMPLT + SETZM BSTO(PVP) + POPJ P, + +EQTST: GETYP A,A + GETYP 0,-1(TP) + CAMN C,(TP) ;CHECK VALUE + CAIE 0,(A) ;AND TYPE + POPJ P, + JRST CPOPJ1 + +EQLTST: PUSH TP,BSTO(PVP) + PUSH TP,B + PUSH TP,A + PUSH TP,C + SETZM BSTO(PVP) + PUSH P,E ;SAVE INS + MOVEI C,-5(TP) ;SET UP CALL TO IEQUAL + MOVEI D,-1(TP) + AOS -1(P) ;ASSUME SKIP + PUSHJ P,IEQUAL ;GO INO EQUAL + SOS -1(P) ;UNDO SKIP + SUB TP,[2,,2] ;AND POOP OF CRAP + POP TP,B + POP TP,BSTO(PVP) + POP P,E + POPJ P, + +; COMPILER MEMQ AND MEMBER + +CIMEMB: SKIPA E,[PUSHJ P,EQLTST] + +CIMEMQ: MOVE E,[PUSHJ P,EQTST] + SUBM M,(P) + PUSH TP,A + PUSH TP,B + GETYP A,C + PUSHJ P,CPTYPE + JUMPE A,COMPERR + MOVE B,D ; STRUCT TO B + PUSHJ P,@MEMTBL(A) + TDZA 0,0 ; FLAG NO SKIP + MOVEI 0,1 ; FLAG SKIP + SUB TP,[2,,2] + JUMPE 0,NOM + SOS (P) ; SKIP RETURN + JRST MPOPJ + + +; FUNCTION TO RETURN THE TOP OF A VECTOR , CSTRING OR UNIFORM VECTOR + +MFUNCTION TOP,SUBR + + ENTRY 1 + + MOVE B,AB ;CHECK ARG + PUSHJ P,PTYPE + MOVEI E,(A) + MOVE A,(AB) + MOVE B,1(AB) + PUSHJ P,@TOPTBL(E) ;DISPATCH + JRST FINIS + +PRDISP TOPTBL,IWTYP1,[[PNWORD,UVTOP],[P2NWORD,VTOP],[PCHSTR,CHTOP],[PARGS,ATOP] +[PTMPLT,BCKTOP]] + +BCKTOP: MOVEI B,(B) ; FIX UP POINTER + MOVSI A,TTMPLT + POPJ P, + +UVTOP: SKIPA A,$TUVEC +VTOP: MOVSI A,TVEC + CAIN 0,SSTORE + MOVSI A,TSTORA + HLRE C,B ;AND -LENGTH + HRRZS B + SUB B,C ;POINT TO DOPE WORD + HLRZ D,1(B) ;TOTAL LENGTH + SUBI B,-2(D) ;POINT TO TOP + MOVNI D,-2(D) ;-LENGTH + HRLI B,(D) ;B NOW POINTS TO TOP + POPJ P, + +CHTOP: PUSH TP,A + PUSH TP,B + LDB 0,[360600,,(TP)] ; POSITION FIELD + LDB E,[300600,,(TP)] ; AND SIZE FILED + IDIVI 0,(E) ; 0/ BYTES IN 1ST WORD + MOVEI C,36. ; BITS PER WORD + IDIVI C,(E) ; BYTES PER WORD + PUSH P,C + SUBM C,0 ; UNUSED BYTES I 1ST WORD + ADD 0,-1(TP) ; LENGTH OF WORD BOUNDARIED STRING + MOVEI C,-1(TP) ; GET DOPE WORD + PUSHJ P,BYTDOP + HLRZ C,(A) ; GET LENGTH + SUBI A,-1(C) ; START +1 + MOVEI B,(A) ; SETUP BYTER + HRLI B,440000 + SUB A,(TP) ; WORDS DIFFERENT + IMUL A,(P) ; CHARS EXTRA + SUBM 0,A ; FINAL TOTAL TO A + HRLI A,TCHSTR + POP P,C + DPB E,[300600,,B] + SUB TP,[2,,2] + POPJ P, + + + +ATOP: + +GETATO: HLRE C,B ;GET -LENGTH + HRROS B + SUB B,C ;POINT PAST + GETYP 0,(B) ;GET NEXT TYPE (ASSURED OF BEING EITHER TINFO OR TENTRY) + CAIN 0,TENTRY ;IF ENTRY + JRST EASYTP ;WANT UNEVALUATED ARGS + HRRE C,(B) ;ELSE-- GET NO. OF ARGS (*-2) + SUBI B,(C) ;GO TO TOP + TLCA B,-1(C) ;STORE NUMBER IN TOP POINTER +EASYTP: MOVE B,FRAMLN+ABSAV(B) ;GET ARG POINTER + HRLI A,TARGS + POPJ P, + +; COMPILERS ENTRY TO TOP + +CITOP: PUSHJ P,CPTYEE + CAIN E,P2WORD ; LIST? + JRST COMPERR + PUSHJ P,@TOPTBL(E) + JRST MPOPJ + +; FUNCTION TO CLOBBER THE CDR OF A LIST + +MFUNCTION PUTREST,SUBR,[PUTREST] + ENTRY 2 + + MOVE B,AB ;COPY ARG POINTER + PUSHJ P,PTYPE ;CHECK IT + CAIE A,P2WORD ;LIST? + JRST WTYP1 ;NO, LOSE + ADD B,[2,,2] ;AND NEXT ONE + PUSHJ P,PTYPE + CAIE A,P2WORD + JRST WTYP2 ;NOT LIST, LOSE + HRRZ B,1(AB) ;GET FIRST + MOVE D,3(AB) ;AND 2D LIST + CAIL B,HIBOT + JRST PURERR + HRRM D,(B) ;CLOBBER + MOVE A,(AB) ;RETURN CALLED TYPE + JRST FINIS + + + +; FUNCTION TO BACK UP A VECTOR, UVECTOR OR CHAR STRING + +MFUNCTION BACK,SUBR + + ENTRY + + MOVEI C,1 ;ASSUME BACKING UP ONE + JUMPGE AB,TFA ;NO ARGS IS TOO FEW + CAML AB,[-2,,0] ;SKIP IF MORE THAN 2 ARGS + JRST BACK1 ;ONLY ONE ARG + GETYP A,2(AB) ;GET TYPE + CAIE A,TFIX ;MUST BE FIXED + JRST WTYP2 + SKIPGE C,3(AB) ;GET NUMBER + JRST OUTRNG + CAMGE AB,[-4,,0] ;SKIP IF WINNING NUMBER OF ARGS + JRST TMA +BACK1: MOVE B,AB ;SET UP TO FIND TYPE + PUSHJ P,PTYPE ;GET PRIM TYPE + MOVEI E,(A) + MOVE A,(AB) + MOVE B,1(AB) ;GET DATUM + PUSHJ P,@BCKTBL(E) + JRST FINIS + +PRDISP BCKTBL,IWTYP2,[[PNWORD,BACKU],[P2NWORD,BACKV],[PCHSTR,BACKC],[PARGS,BACKA] +[PTMPLT,BCKTMP]] + +BACKV: LSH C,1 ;GENERAL, DOUBLE AMOUNT + SKIPA A,$TVEC +BACKU: MOVSI A,TUVEC + CAIN 0,SSTORE + MOVSI A,TSTORA + HRLI C,(C) ;TO BOTH HALVES + SUB B,C ;BACK UP VECTOR POINTER + HLRE C,B ;FIND OUT IF OVERFLOW + SUBM B,C ;DOPE POINTER TO C + HLRZ D,1(C) ;GET LENGTH + SUBI C,-2(D) ;POINT TO TOP + ANDI C,-1 + CAILE C,(B) ;SKIP IF A WINNER + JRST OUTRNG ;COMPLAIN +BACKUV: POPJ P, + +BCKTMP: MOVSI C,(C) + SUB B,C ; FIX UP POINTER + JUMPL B,OUTRNG + MOVSI A,TTMPLT + POPJ P, + +BACKC: PUSH TP,A + PUSH TP,B + ADDI A,(C) ; NEW LENGTH + HRLI A,TCHSTR + PUSH P,A ; SAVE COUNT + LDB E,[300600,,B] ;BYTE SIZE + MOVEI 0,36. ;BITS PER WORD + IDIVI 0,(E) ;DIVIDE TO FIND BYTES/WORD + IDIV C,0 ;C/ WORDS BACK, D/BYTES BACK + SUBI B,(C) ;BACK WORDS UP + JUMPE D,CHBOUN ;CHECK BOUNDS + + IMULI 0,(E) ;0/ BITS OCCUPIED BY FULL WORD + LDB A,[360600,,B] ;GET POSITION FILED +BACKC2: ADDI A,(E) ;BUMP + CAIGE A,36. + JRST BACKC1 ;O.K. + SUB A,0 + SUBI B,1 ;DECREMENT POINTER PART +BACKC1: SOJG D,BACKC2 ;DO FOR ALL BYTES + + + + DPB A,[360600,,B] ;FIX UP POINT BYTER +CHBOUN: MOVEI C,-1(TP) + PUSHJ P,BYTDOP ; FIND DOPE WORD + HLRZ C,(A) + SUBI A,-1(C) ; POINT TO TOP + MOVE C,B ; COPY BYTER + IBP C + CAILE A,(C) ; SKIP IF OK + JRST OUTRNG + POP P,A ; RESTORE COUNT + SUB TP,[2,,2] + POPJ P, + + +BACKA: LSH C,1 ;NUMBER TIMES 2 + HRLI C,(C) ;TO BOTH HALVES + SUB B,C ;FIX POINTER + MOVE E,B ;AND SAVE + PUSHJ P,GETATO ;LOOK A T TOP + CAMLE B,E ;COMPARE + JRST OUTRNG + MOVE B,E + POPJ P, + +; COMPILER'S BACK + +CIBACK: PUSHJ P,CPTYEE + JUMPL C,OUTRNG + CAIN E,P2WORD + JRST COMPERR + PUSHJ P,@BCKTBL(E) + JRST MPOPJ + +MFUNCTION STRCOMP,SUBR + + ENTRY 2 + + MOVE A,(AB) + MOVE B,1(AB) + MOVE C,2(AB) + MOVE D,3(AB) + PUSHJ P,ISTRCM + JRST FINIS + +ISTRCM: GETYP 0,A + CAIE 0,TCHSTR + JRST ATMCMP ; MAYBE ATOMS + + GETYP 0,C + CAIE 0,TCHSTR + JRST WTYP2 + + MOVEI A,(A) ; ISOLATR LENGHTS + MOVEI C,(C) + +STRCO2: SOJL A,CHOTHE ; ONE STRING EXHAUSTED, CHECK OTHER + SOJL C,1BIG ; 1ST IS BIGGER + ILDB 0,B + ILDB E,D + CAIN 0,(E) ; SKIP IF DIFFERENT + JRST STRCO2 + CAIL 0,(E) ; SKIP IF 2D BIGGER THAN 1ST + JRST 1BIG +2BIG: MOVNI B,1 + JRST RETFIX + +CHOTHE: JUMPN C,2BIG ; 2 IS BIGGER +SM.CMP: TDZA B,B ; RETURN 0 +1BIG: MOVEI B,1 +RETFIX: MOVSI A,TFIX + POPJ P, + +ATMCMP: CAIE 0,TATOM ; COULD BE ATOM + JRST WTYP1 ; NO, QUIT + GETYP 0,C + CAIE 0,TATOM + JRST WTYP2 + + CAMN B,D ; SAME ATOM? + JRST SM.CMP + ADD B,[3,,3] ; SKIP VAL CELL ETC. + ADD D,[3,,3] + +ATMCM1: MOVE 0,(B) ; GET A WORD OF CHARS + CAME 0,(D) ; SAME? + JRST ATMCM3 ; NO, GET DIF + AOBJP B,ATMCM2 + AOBJN D,ATMCM1 ; MORE TO COMPARE + JRST 1BIG ; 1ST IS BIGGER + + +ATMCM2: AOBJP D,SM.CMP ; EQUAL + JRST 2BIG + +ATMCM3: LSH 0,-1 ; AVOID SIGN LOSSAGE + MOVE C,(D) + LSH C,-1 + CAMG 0,C + JRST 2BIG + JRST 1BIG + + ;ERROR COMMENTS FOR SOME PRIMITIVES + +OUTRNG: PUSH TP,$TATOM + PUSH TP,EQUOTE OUT-OF-BOUNDS + JRST CALER1 + +WRNGUT: PUSH TP,$TATOM + PUSH TP,EQUOTE UNIFORM-VECTORS-TYPE-DIFFERS + JRST CALER1 + +SLOSE0: PUSH TP,$TATOM + PUSH TP,EQUOTE VECTOR-LENGTHS-DIFFER + JRST CALER1 + +SLOSE1: PUSH TP,$TATOM + PUSH TP,EQUOTE KEYS-WRONG-TYPE + JRST CALER1 + +SLOSE2: PUSH TP,$TATOM + PUSH TP,EQUOTE KEY-TYPES-DIFFER + JRST CALER1 + +SLOSE3: PUSH TP,$TATOM + PUSH TP,EQUOTE KEY-OFFSET-OUTSIDE-RECORD + JRST CALER1 + +SLOSE4: PUSH TP,$TATOM + PUSH TP,EQUOTE NON-INTEGER-NO.-OF-RECORDS + JRST CALER1 + +IIGETP: JRST IGETP ;FUDGE FOR MIDAS/STINK LOSSAGE +IIPUTP: JRST IPUTP + + ;SUPER USEFUL ERROR MESSAGES (USED BY WHOLE WORLD) + +WNA: PUSH TP,$TATOM + PUSH TP,EQUOTE WRONG-NUMBER-OF-ARGUMENTS + JRST CALER1 + +TFA: PUSH TP,$TATOM + PUSH TP,EQUOTE TOO-FEW-ARGUMENTS-SUPPLIED + JRST CALER1 + +TMA: PUSH TP,$TATOM + PUSH TP,EQUOTE TOO-MANY-ARGUMENTS-SUPPLIED + JRST CALER1 + +WRONGT: +WTYP: PUSH TP,$TATOM + PUSH TP,EQUOTE ARG-WRONG-TYPE + JRST CALER1 + +IWTYP1: +WTYP1: PUSH TP,$TATOM + PUSH TP,EQUOTE FIRST-ARG-WRONG-TYPE + JRST CALER1 + +IWTYP2: +WTYP2: PUSH TP,$TATOM + PUSH TP,EQUOTE SECOND-ARG-WRONG-TYPE + JRST CALER1 + +BADTPL: PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-TEMPLATE-DATA + JRST CALER1 + +BADPUT: PUSH TP,$TATOM + PUSH TP,EQUOTE TEMPLATE-TYPE-VIOLATION + JRST CALER1 + +WTYP3: PUSH TP,$TATOM + PUSH TP,EQUOTE THIRD-ARG-WRONG-TYPE + JRST CALER1 + +CALER1: MOVEI A,1 +CALER: HRRZ C,FSAV(TB) + PUSH TP,$TATOM + CAMGE C,VECTOP + CAMGE C,VECBOT + SKIPA C,@-1(C) ; SUBRS AND FSUBRS + MOVE C,3(C) ; FOR RSUBRS + PUSH TP,C + ADDI A,1 + ACALL A,ERROR + JRST FINIS + + +GETWNA: HLRZ B,(E)-2 ;GET LOSING COMPARE INSTRUCTION + CAIE B,(CAIE A,) ;AS EXPECTED ? + JRST WNA ;NO, + HRRE B,(E)-2 ;GET DESIRED NUMBER OF ARGS + HLRE A,AB ;GET ACTUAL NUMBER OF ARGS + CAMG B,A + JRST TFA + JRST TMA + +END + TITLE PRINTER ROUTINE FOR MUDDLE + +RELOCATABLE + +.INSRT DSK:MUDDLE > + +.GLOBAL IPNAME,MTYO,FLOATB,RLOOKU,RADX,INAME,INTFCN,LINLN,DOIOTO,BFCLS1,ATOSQ,IGVAL +.GLOBAL BYTPNT,OPNCHN,CHRWRD,IDVAL,CHARGS,CHFRM,CHLOCI,PRNTYP,PRTYPE,IBLOCK,WXCT +.GLOBAL VECBOT,VAL,ITEM,INDIC,IOINS,DIRECT,TYPVEC,CHRPOS,LINPOS,ACCESS,PAGLN,ROOT,PROCID +.GLOBAL BADCHN,WRONGD,CHNCLS,IGET,FNFFL,ILLCHO,BUFSTR,BYTDOP,6TOCHS,PURVEC,STBL,RXCT +.GLOBAL TMPLNT,TD.LNT,MPOPJ,SSPEC1 +.GLOBAL CIPRIN,CIPRNC,CIPRN1,CPATM,CP1ATM,CPCATM,CPSTR,CP1STR,CPCSTR +.GLOBAL CIFLTZ,CITERP,CIUPRS,CPCH + +BUFLNT==100 ; BUFFER LENGTH IN WORDS + +FLAGS==0 ;REGISTER USED TO STORE FLAGS +CARRET==15 ;CARRIAGE RETURN CHARACTER +ESCHAR=="\ ;ESCAPE CHARACTER +SPACE==40 ;SPACE CHARACTER +ATMBIT==200000 ;BIT SWITCH FOR ATOM-NAME PRINT +NOQBIT==020000 ;SWITCH FOR NO ESCAPING OF OUTPUT (PRINC) +SEGBIT==010000 ;SWITCH TO INDICATE PRINTING A SEGMENT +SPCBIT==004000 ;SWITCH TO INDICATE "PRINT" CALL (PUT A SPACE AFTER) +FLTBIT==002000 ;SWITCH TO INDICATE "FLATSIZE" CALL +HSHBIT==001000 ;SWITCH TO INDICATE "PHASH" CALL +TERBIT==000400 ;SWITCH TO INDICATE "TERPRI" CALL +UNPRSE==000200 ;SWITCH TO INDICATE "UNPARSE" CALL +ASCBIT==000100 ;SWITCH TO INDICATE USING A "PRINT" CHANNEL +BINBIT==000040 ;SWITCH TO INDICATE USING A "PRINTB" CHANNEL +PJBIT==400000 +C.BUF==1 +C.PRIN==2 +C.BIN==4 +C.OPN==10 +C.READ==40 + + + MFUNCTION FLATSIZE,SUBR + DEFINE FLTMAX + 4(B) TERMIN + DEFINE FLTSIZ + 2(B)TERMIN +;FLATSIZE TAKES TWO OR THREE ARGUMENTS: THE FIRST IS AN OBJECT THE SECOND +;IS THE MAXIMUM SIZE BEFORE IT GIVES UP AN RETURNS FALSE +;THE THIRD (OPTIONAL) ARGUMENT IS A RADIX + ENTRY + CAMG AB,[-2,,0] ;CHECK NUMBER OF ARGS + CAMG AB,[-6,,0] + JRST WNA + PUSH P,3(AB) + + GETYP A,2(AB) + CAIE A,TFIX + JRST WTYP2 ;SECOND ARG NOT FIX THEN LOSE + + CAMG AB,[-4,,0] ;SEE IF THERE IS A RADIX ARGUMENT + JRST .+3 ; RADIX SUPPLIED + PUSHJ P,GTRADX ; GET THE RADIX FROM OUTCHAN + JRST FLTGO + GETYP A,4(AB) ;CHECK TO SEE THAT RADIX IS FIX + CAIE A,TFIX + JRST WTYP ;ERROR THIRD ARGUMENT WRONG TYPE + MOVE C,5(AB) + PUSHJ P,GETARG ; GET ARGS INTO A AND B +FLTGO: POP P,D ; RESTORE FLATSIZE MAXIMUM + PUSHJ P,CIFLTZ + JFCL + JRST FINIS + + + +MFUNCTION UNPARSE,SUBR + DEFINE UPB + 0(B) TERMIN + + ENTRY + + JUMPGE AB,TFA + MOVE E,TP ;SAVE TP POINTER + + + +;TURN ON FLTBIT TO AVOID PRINTING LOSSAGE +;TURN ON UNPRSE TO CAUSE CHARS TO BE STASHED + CAMG AB,[-2,,0] ;SKIP IF RADIX SUPPLIED + JRST .+3 + PUSHJ P,GTRADX ;GET THE RADIX FROM OUTCHAN + JRST UNPRGO + CAMGE AB,[-5,,0] ;CHECK FOR TOO MANY + JRST TMA + GETYP 0,2(AB) + CAIE 0,TFIX ;SEE IF RADIX IS FIXED + JRST WTYP2 + MOVE C,3(AB) ;GET RADIX + PUSHJ P,GETARG ;GET ARGS INTO A AND B +UNPRGO: PUSHJ P,CIUPRS + JRST FINIS + JRST FINIS + + +GTRADX: MOVE B,IMQUOTE OUTCHAN + PUSH P,0 ;SAVE FLAGS + PUSHJ P,IDVAL ;GET VALUE FOR OUTCHAN + POP P,0 + GETYP A,A ;CHECK TYPE OF CHANNEL + CAIE A,TCHAN + JRST FUNCH1-1 ;IT IS A TP-POINTER + MOVE C,RADX(B) ;GET RADIX FROM OUTCHAN + JRST FUNCH1 + MOVE C,(B)+6 ;GET RADIX FROM STACK + +FUNCH1: CAIG C,1 ;CHECK FOR STRANGE RADIX + MOVEI C,10. ;DEFAULT IF THIS IS THE CASE +GETARG: MOVE A,(AB) + MOVE B,1(AB) + POPJ P, + + +MFUNCTION PRINT,SUBR + ENTRY + PUSHJ P,AGET ; GET ARGS + PUSHJ P,CIPRIN + JRST FINIS + +MFUNCTION PRINC,SUBR + ENTRY + PUSHJ P,AGET ; GET ARGS + PUSHJ P,CIPRNC + JRST FINIS + +MFUNCTION PRIN1,SUBR + ENTRY + PUSHJ P,AGET + PUSHJ P,CIPRN1 + JRST FINIS + JRST PRIN01 ;CALL IPRINT AFTER SAVING STUFF + + +MFUNCTION TERPRI,SUBR + ENTRY + PUSHJ P,AGET1 + PUSHJ P,CITERP + JRST FINIS + + +CITERP: SUBM M,(P) + MOVSI 0,TERBIT+SPCBIT ; SET UP FLAGS + PUSHJ P,TESTR ; TEST FOR GOOD CHANNEL + MOVEI A,CARRET ; MOVE IN CARRIAGE-RETURN + PUSHJ P,PITYO ; PRINT IT OUT + MOVEI A,12 ; LINE-FEED + PUSHJ P,PITYO + MOVSI A,TFALSE ; RETURN A FALSE + MOVEI B,0 + JRST MPOPJ ; RETURN + + +TESTR: GETYP E,A + CAIN E,TCHAN ; CHANNEL? + JRST TESTR1 ; OK? + CAIE E,TTP + JRST BADCHN + HLRZS 0 + IOR 0,A ; RESTORE FLAGS + HRLZS 0 + POPJ P, +TESTR1: HRRZ E,-4(B) ; GET IN FLAGS FROM CHANNEL + TRC E,C.PRIN+C.OPN ; CHECK TO SEE THAT CHANNEL IS GOOD + TRNE E,C.PRIN+C.OPN + JRST BADCHN ; ITS A LOSER + TRNE E,C.BIN + JRST PSHNDL ; DON'T HANDLE BINARY + TLO ASCBIT ; ITS ASCII + POPJ P, ; ITS A WINNER + +PSHNDL: PUSH TP,C ; SAVE ARGS + PUSH TP,D + PUSH TP,A ; PUSH CHANNEL ONTO STACK + PUSH TP,B + PUSHJ P,BPRINT ; CHECK BUFFER + POP TP,B + POP TP,A + POP TP,D + POP TP,C + POPJ P, + + + ;CIUPRS NEEDS A RADIX IN C AND A TYPE-OBJECT PAIR IN A,B + +CIUPRS: SUBM M,(P) ; MODIFY M-POINTER + MOVE E,TP ; SAVE TP-POINTER + PUSH TP,[0] ; SLOT FOR FIRST STRING COPY + PUSH TP,[0] + PUSH TP,[0] ; AND SECOND STRING + PUSH TP,[0] + PUSH TP,A ; SAVE OBJECTS + PUSH TP,B + PUSH TP,$TTP ; SAVE TP POINTER + PUSH TP,E + PUSH P,C + MOVE D,[377777,,-1] ; MOVE IN MAXIMUM NUMBER FOR FLATSIZE + PUSHJ P,CIFLTZ ; FIND LENGTH OF STRING + FATAL UNPARSE BLEW IT + PUSH TP,$TFIX ; MOVE IN ARGUMENT FOR ISTRING + PUSH TP,B + MCALL 1,ISTRING + POP TP,E ; RESTORE TP-POINTER + SUB TP,[1,,1] ;GET RID OF TYPE WORD + MOVEM A,1(E) ; SAVE RESULTS + MOVEM A,3(E) + MOVEM B,2(E) + MOVEM B,4(E) + POP TP,B ; RESTORE THE WORLD + POP TP,A + POP P,C + MOVSI 0,FLTBIT+UNPRSE ; SET UP FLAGS + PUSHJ P,CUSET + JRST MPOPJ ; RETURN + + + +; FOR CIFLTZ C CONTAINS THE RADIX, D THE MAXIMUM NUMBER OF CHARACTERS, +; A,B THE TYPE-OBJECT PAIR + +CIFLTZ: SUBM M,(P) + MOVE E,TP ; SAVE POINTER + PUSH TP,$TFIX ; PUSH ON FLATSIZE COUNT + PUSH TP,[0] + PUSH TP,$TFIX ; PUSH ON FLATSIZE MAXIMUM + PUSH TP,D + MOVSI 0,FLTBIT ; MOVE ON FLATSIZE FLAG + PUSHJ P,CUSET ; CONTINUE + JRST MPOPJ + SOS (P) ; SKIP RETURN + JRST MPOPJ ; RETURN + +; CUSET IS THE ROUTINE USED BY FLATSIZE AND UNPARSE TO DO THE PUSHING,POPING AND CALLING +; NEEDED TO GET A RESULT. + +CUSET: PUSH TP,$TFIX ; PUSH ON RADIX + PUSH TP,C + PUSH TP,$TPDL + PUSH TP,P ; PUSH ON RETURN POINTER IN CASE FLATSIZE GETS A FALSE + PUSH TP,A ; SAVE OBJECTS + PUSH TP,B + MOVSI C,TTP ; CONSTRUCT TP-POINTER + HLR C,FLAGS ; SAVE FLAGS IN TP-POINTER + MOVE D,E + PUSH TP,C ; PUSH ON CHANNEL + PUSH TP,D + PUSHJ P,IPRINT ; GO TO INTERNAL PRINTER + POP TP,B ; GET IN TP POINTER + MOVE TP,B ; RESTORE POINTER + TLNN FLAGS,UNPRSE ; SEE IF UNPARSE CALL + JRST FLTGEN ; ITS A FLATSIZE + MOVE A,UPB+3 ; RETURN STRING + MOVE B,UPB+4 + POPJ P, ; DONE +FLTGEN: MOVE A,FLTSIZ-1 ; GET IN COUNT + MOVE B,FLTSIZ + AOS (P) + POPJ P, ; EXIT + + +; CIPRIN,CIPRNC,CIPRN1,CPATM,CP1ATM,CPCATM,CPSTR,CP1STR,CPCSTR ALL ASSUME +; THAT C,D CONTAIN THE OBJECT AND A AND B CONTAIN THE CHANNEL + +CIPRIN: SUBM M,(P) + MOVSI 0,SPCBIT ; SET UP FLAGS + PUSHJ P,TPRT ; PRINT INITIALIZATION + PUSHJ P,IPRINT + JRST TPRTE ; EXIT + +CIPRN1: SUBM M,(P) + MOVEI FLAGS,0 ; SET UP FLAGS + PUSHJ P,TPR1 ; INITIALIZATION + PUSHJ P,IPRINT ; PRINT IT OUT + JRST TPR1E ; EXIT + +CIPRNC: SUBM M,(P) + MOVSI FLAGS,NOQBIT ; SET UP FLAGS + PUSHJ P,TPR1 ; INITIALIZATION + PUSHJ P,IPRINT + JRST TPR1E ; EXIT + +; INITIALIZATION FOR PRINT ROUTINES + +TPRT: PUSHJ P,TESTR ; SEE IF CHANNEL IS OK + PUSH TP,C ; SAVE ARGUMENTS + PUSH TP,D + PUSH TP,A ; SAVE CHANNEL + PUSH TP,B + MOVEI A,CARRET ; PRINT CARRIAGE RETURN + PUSHJ P,PITYO + MOVEI A,12 ; AND LF + PUSHJ P,PITYO + MOVE A,-3(TP) ; MOVE IN ARGS + MOVE B,-2(TP) + POPJ P, + +; EXIT FOR PRINT ROUTINES + +TPRTE: POP TP,B ; RESTORE CHANNEL + MOVEI A,SPACE ; PRINT TRAILING SPACE + PUSHJ P,PITYO + SUB TP,[1,,1] ; GET RID OF CHANNEL TYPE-WORD + POP TP,B ; RETURN WHAT WAS PASSED + POP TP,A + JRST MPOPJ ; EXIT + +; INITIALIZATION FOR PRIN1 AND PRINC ROUTINES + +TPR1: PUSHJ P,TESTR ; SEE IF CHANNEL IS OK + PUSH TP,C ; SAVE ARGS + PUSH TP,D + PUSH TP,A ; SAVE CHANNEL + PUSH TP,B + MOVE A,-3(TP) ; GET ARGS + MOVE B,-2(TP) + POPJ P, + +; EXIT FOR PRIN1 AND PRINC ROUTINES + +TPR1E: SUB TP,[2,,2] ; REMOVE CHANNEL + POP TP,B ; RETURN ARGUMENTS THAT WERE GIVEN + POP TP,A + JRST MPOPJ ; EXIT + + + +CPATM: SUBM M,(P) + MOVSI C,TATOM ; GET TYPE FOR BINARY + MOVE 0,$SPCBIT ; SET UP FLAGS + PUSHJ P,TPRT ; PRINT INITIALIZATION + PUSHJ P,CPATOM ; PRINT IT OUT + JRST TPRTE ; EXIT + +CP1ATM: SUBM M,(P) + MOVE C,$TATOM + MOVEI FLAGS,0 ; SET UP FLAGS + PUSHJ P,TPR1 ; INITIALIZATION + PUSHJ P,CPATOM ; PRINT IT OUT + JRST TPR1E ; EXIT + +CPCATM: SUBM M,(P) + MOVE C,$TATOM + MOVSI FLAGS,NOQBIT ; SET UP FLAGS + PUSHJ P,TPR1 ; INITIALIZATION + PUSHJ P,CPATOM ; PRINT IT OUT + JRST TPR1E ; EXIT + + +; THIS ROUTINE IS USD TO PRINT ONE CHARACTER. THE CHANNEL IS IN A AND B THE +; CHARACTER IS IN C. +CPCH: SUBM M,(P) + MOVSI FLAGS,NOQBIT + MOVE C,$TCHRS + PUSHJ P,TESTR ; SEE IF CHANNEL IS GOOD + PUSH P,D + MOVE A,D ; MOVE IN CHARACTER FOR PITYO + PUSHJ P,PITYO + MOVE A,$TCHRST ; RETURN THE CHARACTER + POP P,B + JRST MPOPJ + + + + +CPSTR: SUBM M,(P) + HRLI C,TCHSTR + MOVSI 0,SPCBIT ; SET UP FLAGS + PUSHJ P,TPRT ; PRINT INITIALIZATION + PUSHJ P,CPCHST ; PRINT IT OUT + JRST TPRTE ; EXIT + +CP1STR: SUBM M,(P) + HRLI C,TCHSTR + MOVEI FLAGS,0 ; SET UP FLAGS + PUSHJ P,TPR1 ; INITIALIZATION + PUSHJ P,CPCHST ; PRINT IT OUT + JRST TPR1E ; EXIT + +CPCSTR: SUBM M,(P) + HRLI C,TCHSTR + MOVSI FLAGS,NOQBIT ; SET UP FLAGS + PUSHJ P,TPR1 ; INITIALIZATION + PUSHJ P,CPCHST ; PRINT IT OUT + JRST TPR1E ; EXIT + + +CPATOM: PUSH TP,A ; COPY ARGS FOR INTERNAL SAKE + PUSH TP,B + PUSH P,0 ; ATOM CALLER ROUTINE + PUSH P,C + JRST PATOM + +CPCHST: PUSH TP,A ; COPY ARGS FOR INTERNAL SAKE + PUSH TP,B + PUSH P,0 ; STRING CALLER ROUTINE + PUSH P,C + JRST PCHSTR + + + +AGET: MOVEI FLAGS,0 + SKIPL E,AB ; COPY ARG POINTER + JRST TFA ;NO ARGS IS AN ERROR + ADD E,[2,,2] ;POINT AT POSSIBLE CHANNEL + JRST COMPT +AGET1: MOVE E,AB ; GET COPY OF AB + MOVSI FLAGS,TERBIT + +COMPT: PUSH TP,$TFIX ;LEAVE ROOM ON STACK FOR ONE CHANNEL + PUSH TP,[0] + JUMPGE E,DEFCHN ;IF NO CHANNEL ARGUMENT, USE CURRENT BINDING + CAMG E,[-2,,0] ;IF MORE ARGS THEN ERROR + JRST TMA + MOVE A,(E) ;GET CHANNEL + MOVE B,(E)+1 + JRST NEWCHN + +DEFCHN: MOVE B,IMQUOTE OUTCHAN + MOVSI A,TATOM + PUSH P,FLAGS ;SAVE FLAGS + PUSHJ P,IDVAL ;GET VALUE OF OUTCHAN + POP P,0 + +NEWCHN: TLNE FLAGS,TERBIT ; SEE IF TERPRI + POPJ P, + MOVE C,(AB) ; GET ARGS + MOVE D,1(AB) + POPJ P, + +; HERE IF USING A PRINTB CHANNEL + +BPRINT: TLO FLAGS,BINBIT + SKIPE BUFSTR(B) ; ANY OUTPUT BUFFER? + POPJ P, + +; HERE TO GENERATE A STRING BUFFER + + PUSH P,FLAGS + MOVEI A,BUFLNT ; GET BUFFER LENGTH + PUSHJ P,IBLOCK ; MAKE A BUFFER + MOVSI 0,TWORD+.VECT. ; CLOBBER U TYPE + MOVEM 0,BUFLNT(B) + SETOM (B)) ; -1 THE BUFFER + MOVEI C,1(B) + HRLI C,(B) + BLT C,BUFLNT-1(B) + HRLI B,440700 + MOVE C,(TP) + MOVEM B,BUFSTR(C) ; STOR BYTE POINTER + MOVE 0,[TCHSTR,,BUFLNT*5] + MOVEM 0,BUFSTR-1(C) + POP P,FLAGS + + MOVE B,(TP) + POPJ P, + + +IPRINT: PUSH P,C ; SAVE C + PUSH P,FLAGS ;SAVE PREVIOUS FLAGS + PUSH TP,A ;SAVE ARGUMENT ON TP-STACK + PUSH TP,B + + INTGO ;ALLOW INTERRUPTS HERE + + GETYP A,-1(TP) ;GET THE TYPE CODE OF THE ITEM + SKIPE C,PRNTYP+1(TVP) ; USER TYPE TABLE? + JRST PRDISP +NORMAL: CAIG A,NUMPRI ;PRIMITIVE? + JRST @PRTYPE(A) ;YES-DISPATCH + JRST PUNK ;JUMP TO ERROR ROUTINE IF CODE TOO GREAT + +; HERE FOR USER PRINT DISPATCH + +PRDISP: ADDI C,(A) ; POINT TO SLOT + ADDI C,(A) + SKIPE (C) ; SKIP EITHER A LOSER OR JRST DISP + JRST PRDIS1 ; APPLY EVALUATOR + SKIPN C,1(C) ; GET ADDR OR GO TO PURE DISP + JRST NORMAL + JRST (C) + +PRDIS1: PUSH P,C ; SAVE C + PUSH TP,[TATOM,,-1] ; PUSH ON OUTCHAN FOR SPECBIND + PUSH TP,IMQUOTE OUTCHAN + PUSH TP,-5(TP) + PUSH TP,-5(TP) + PUSH TP,[0] + PUSH TP,[0] + PUSHJ P,SPECBIND + POP P,C ; RESTORE C + PUSH TP,(C) ; PUSH ARGS FOR APPLY + PUSH TP,1(C) + PUSH TP,-9(TP) + PUSH TP,-9(TP) + MCALL 2,APPLY ; APPLY HACKER TO OBJECT + MOVEI E,-8(TP) + PUSHJ P,SSPEC1 ;UNBIND OUTCHAN + SUB TP,[6,,6] ; POP OFF STACK + JRST PNEXT + +; PRINT DISPATCH TABLE + +DISTBL PRTYPE,PUNK,[[TATOM,PATOM],[TFORM,PFORM],[TSEG,PSEG],[TFIX,PFIX] +[TFLOAT,PFLOAT],[TLIST,PLIST],[TVEC,PVEC],[TCHRS,PCHRS],[TCHSTR,PCHSTR] +[TARGS,PARGS],[TUVEC,PUVEC],[TDEFER,PDEFER],[TINTH,PINTH],[THAND,PHAND] +[TILLEG,ILLCH],[TRSUBR,PRSUBR],[TENTER,PENTRY],[TPCODE,PPCODE],[TTYPEW,PTYPEW] +[TTYPEC,PTYPEC],[TTMPLT,TMPRNT],[TLOCD,LOCPT1]] + +PUNK: MOVE C,TYPVEC+1(TVP) ; GET AOBJN-POINTER TO VECTOR OF TYPE ATOMS + GETYP B,-1(TP) ; GET THE TYPE CODE INTO REG B + LSH B,1 ; MULTIPLY BY TWO + HRL B,B ; DUPLICATE IT IN THE LEFT HALF + ADD C,B ; INCREMENT THE AOBJN-POINTER + JUMPGE C,PRERR ; IF POSITIVE, INDEX > VECTOR SIZE + + MOVE B,-2(TP) ; MOVE IN CHANNEL + PUSHJ P,RETIF1 ; START NEW LINE IF NO ROOM + MOVEI A,"# ; INDICATE TYPE-NAME FOLLOWS + PUSHJ P,PITYO + MOVE A,(C) ; GET TYPE-ATOM + MOVE B,1(C) + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT ; PRINT ATOM-NAME + SUB TP,[2,,2] ; POP STACK + MOVE B,-2(TP) ; MOVE IN CHANNEL + PUSHJ P,SPACEQ ; MAYBE SPACE + MOVE B,(B) ; RESET THE REAL ARGUMENT POINTER + HRRZ A,(C) ; GET THE STORAGE-TYPE + ANDI A,SATMSK + CAIG A,NUMSAT ; SKIP IF TEMPLATE + JRST @UKTBL(A) ; USE DISPATCH TABLE ON STORAGE TYPE + JRST TMPRNT ; PRINT TEMPLATED DATA STRUCTURE + +DISTBS UKTBL,POCTAL,[[S2WORD,PLIST],[S2NWORD,PVEC],[SNWORD,PUVEC],[SATOM,PATOM] +[SCHSTR,PCHSTR],[SFRAME,PFRAME],[SARGS,PARGS],[SPVP,PPVP],[SLOCID,LOCPT],[SLOCA,LOCP] +[SLOCV,LOCP],[SLOCU,LOCP],[SLOCS,LOCP],[SLOCL,LOCP],[SLOCN,LOCP],[SASOC,ASSPNT] +[SLOCT,LOCP]] + + ; SELECK AN ILLEGAL + +ILLCH: MOVEI B,-1(TP) + JRST ILLCHO + + ; PRINT INTERRUPT HANDLER + +PHAND: MOVE B,-2(TP) ; MOVE CHANNEL INTO B + PUSHJ P,RETIF1 + MOVEI A,"# + PUSHJ P,PITYO ; SAY "FUNNY TYPE" + MOVSI A,TATOM + MOVE B,MQUOTE HANDLER + PUSH TP,-3(TP) ; PUSH CHANNEL ON FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT ; PRINT THE TYPE NAME + SUB TP,[2,,2] ; POP CHANNEL OFF STACK + MOVE B,-2(TP) ; GET CHANNEL + PUSHJ P,SPACEQ ; SPACE MAYBE + SKIPN B,(TP) ; GET ARG BACK + JRST PNEXT + MOVE A,INTFCN(B) ; PRINT FUNCTION FOR NOW + MOVE B,INTFCN+1(B) + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT ; PRINT THE INT FUNCTION + SUB TP,[2,,2] ; POP CHANNEL OFF + JRST PNEXT + +; PRINT INT HEADER + +PINTH: MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,RETIF1 + MOVEI A,"# + PUSHJ P,PITYO + MOVSI A,TATOM ; AND NAME + MOVE B,MQUOTE IHEADER + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT + MOVE B,-4(TP) ; GET CHANNEL INTO B + PUSHJ P,SPACEQ ; MAYBE SPACE + SKIPN B,-2(TP) ; INT HEADER BACK + JRST PNEXT + MOVE A,INAME(B) ; GET NAME + MOVE B,INAME+1(B) + PUSHJ P,IPRINT + SUB TP,[2,,2] ; CLEAN OFF STACK + JRST PNEXT + + +; PRINT ASSOCIATION BLOCK + +ASSPNT: MOVEI A,"( ; MAKE IT BE (ITEN INDIC VAL) + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,PRETIF ; MAKE ROOM AND PRINT + SKIPA C,[-3,,0] ; # OF FIELDS +ASSLP: PUSHJ P,SPACEQ + MOVE D,(TP) ; RESTORE GOODIE + ADD D,ASSOFF(C) ; POINT TO FIELD + MOVE A,(D) ; GET IT + MOVE B,1(D) + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT ; AND PRINT IT + SUB TP,[2,,2] ; POP OFF CHANNEL + AOBJN C,ASSLP + + MOVEI A,") + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,PRETIF ; CLOSE IT + JRST PNEXT + +ASSOFF: ITEM + INDIC + VAL + ; PRINT TYPE-C AND TYPE-W + +PTYPEW: HRRZ A,(TP) ; POSSIBLE RH + HLRZ B,(TP) + MOVE C,MQUOTE TYPE-W + JRST PTYPEX + +PTYPEC: HRRZ B,(TP) + MOVEI A,0 + MOVE C,MQUOTE TYPE-C + +PTYPEX: PUSH P,B + PUSH P,A + PUSH TP,$TATOM + PUSH TP,C + MOVEI A,2 + MOVE B,-4(TP) ; GET CHANNEL INTO B + PUSHJ P,RETIF ; ROOM TO START? + MOVEI A,"% + PUSHJ P,PITYO + MOVEI A,"< + PUSHJ P,PITYO + POP TP,B ; GET NAME + POP TP,A + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT ; AND PRINT IT AS 1ST ELEMENT + SUB TP,[2,,2] ; POP OFF CHANNEL + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,SPACEQ ; MAYBE SPACE + MOVE A,-1(P) ; TYPE CODE + ASH A,1 + HRLI A,(A) ; MAKE SURE WINS + ADD A,TYPVEC+1(TVP) + JUMPL A,PTYPX1 ; JUMP FOR A WINNER + PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-TYPE-CODE + JRST CALER1 + +PTYPX1: MOVE B,1(A) ; GET TYPE NAME + HRRZ A,(A) ; AND SAT + ANDI A,SATMSK + MOVEM A,-1(P) ; AND SAVE IT + MOVSI A,TATOM + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT ; OUT IT GOES + SUB TP,[2,,2] ; POP OFF CHANNEL + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,SPACEQ ; MAYBE SPACE + MOVE A,-1(P) ; GET SAT BACK + MOVE B,@STBL(A) + MOVSI A,TATOM ; AND PRINT IT + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT + SUB TP,[2,,2] ; POP OFF STACK + SKIPN B,(P) ; ANY EXTRA CRAP? + JRST PTYPX2 + + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,SPACEQ + MOVE B,(P) + MOVSI A,TFIX + PUSH TP,-3(TP) ; PUSH CHANNELS FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT ; PRINT EXTRA + SUB TP,[2,,2] ; POP OFF CHANNEL + +PTYPX2: MOVEI A,"> + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,PRETIF + SUB P,[2,,2] ; FLUSH CRUFT + JRST PNEXT + + ; PRINT PURE CODE POINTER + +PPCODE: MOVEI A,2 + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,RETIF + MOVEI A,"% + PUSHJ P,PITYO + MOVEI A,"< + PUSHJ P,PITYO + MOVSI A,TATOM ; PRINT SUBR CALL + MOVE B,MQUOTE PCODE + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT + MOVE B,-4(TP) ; GET CHANNEL INTO B + PUSHJ P,SPACEQ ; MAYBE SPACE? + HLRZ A,-2(TP) ; OFFSET TO VECTOR + ADD A,PURVEC+1(TVP) ; SLOT TO A + MOVE A,(A) ; SIXBIT NAME + PUSH P,FLAGS + PUSHJ P,6TOCHS ; TO A STRING + POP P,FLAGS + PUSHJ P,IPRINT + MOVE B,-4(TP) ; GET CHANNEL INTO B + PUSHJ P,SPACEQ + HRRZ B,-2(TP) ; GET OFFSET + MOVSI A,TFIX + PUSHJ P,IPRINT + SUB TP,[2,,2] ; POP CHANNEL OFF STACK + MOVEI A,"> + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,PRETIF ; CLOSE THE FORM + JRST PNEXT + + + ; PRINT SUB-ENTRY TO RSUBR + +PENTRY: MOVE B,(TP) ; GET BLOCK + GETYP A,(B) ; TYPE OF 1ST ELEMENT + CAIE A,TRSUBR ; RSUBR, OK + JRST PENT1 + MOVSI A,TATOM ; UNLINK + HLLM A,(B) + MOVE A,1(B) + MOVE A,3(A) + MOVEM A,1(B) +PENT2: MOVEI A,2 ; CHECK ROOM + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,RETIF + MOVEI A,"% ; SETUP READ TIME MACRO + PUSHJ P,PITYO + MOVEI A,"< + PUSHJ P,PITYO + MOVSI A,TATOM + MOVE B,MQUOTE RSUBR-ENTRY + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT + MOVE B,-4(TP) + PUSHJ P,SPACEQ ; MAYBE SPACE + MOVEI A,"' ; QUOTE TO AVOID EVALING IT + PUSHJ P,PRETIF + MOVSI A,TVEC + MOVE B,-2(TP) + PUSHJ P,IPRINT + MOVE B,-4(TP) ; GET CHANNEL INTO B + PUSHJ P,SPACEQ + MOVE B,-2(TP) + HRRZ B,2(B) + MOVSI A,TFIX + PUSHJ P,IPRINT + MOVEI A,"> + SUB TP,[2,,2] ; POP CHANNEL OFF STACK + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,PRETIF + JRST PNEXT + +PENT1: CAIN A,TATOM + JRST PENT2 + PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-ENTRY-BLOCK + JRST CALER1 + + ; HERE TO PRINT TEMPLATED DATA STRUCTURE + +TMPRNT: PUSH P,FLAGS ; SAVE FLAGS + MOVE A,(TP) ; GET POINTER + GETYP A,(A) ; GET SAT + PUSH P,A ; AND SAVE IT + MOVEI A,"{ ; OPEN SQUIGGLE + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,PRETIF ; PRINT WITH CHECKING + HLRZ A,(TP) ; GET AMOUNT RESTED OFF + SUBI A,1 + PUSH P,A ; AND SAVE IT + MOVE A,-1(P) ; GET SAT + SUBI A,NUMSAT+1 ; FIXIT UP + HRLI A,(A) + ADD A,TD.LNT+1(TVP) ; CHECK FOR WINNAGE + JUMPGE A,BADTPL ; COMPLAIN + HRRZS C,(TP) ; GET LENGTH + XCT (A) ; INTO B + SUB B,(P) ; FUDGE FOR RESTS + MOVEI B,-1(B) ; FUDGE IT + PUSH P,B ; AND SAVE IT + +TMPRN1: AOS C,-1(P) ; GET ELEMENT OF INTEREST + SOSGE (P) ; CHECK FOR ANY LEFT + JRST TMPRN2 ; ALL DONE + + MOVE B,(TP) ; POINTER + HRRZ 0,-2(P) ; SAT + PUSHJ P,TMPLNT ; GET THE ITEM + MOVE FLAGS,-3(P) ; RESTORE FLAGS + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT ; PRINT THIS ELEMENT + SUB TP,[2,,2] ; POP CHANNEL OFF STACK + MOVE B,-2(TP) ; GET CHANNEL INTO B + SKIPE (P) ; IF NOT LAST ONE THEN + PUSHJ P,SPACEQ ; SEPARATE WITH A SPACE + JRST TMPRN1 + +TMPRN2: SUB P,[4,,4] + MOVE B,-2(TP) + MOVEI A,"} ; CLOSE THIS GUY + PUSHJ P,PRETIF + JRST PNEXT + + + ; RSUBR PRINTING ROUTINES. ON PRINTB CHANNELS, WRITES OUT +; COMPACT BINARY. ON PRINT CHANNELS ALL IS ASCII + +PRSUBR: MOVE A,(TP) ; GET RSUBR IN QUESTION + GETYP A,(A) ; CHECK FOR PURE RSUBR + CAIN A,TPCODE + JRST PRSBRP ; PRINT IT SPECIAL WAY + + TLNN FLAGS,BINBIT ; SKIP IF BINARY OUTPUT + JRST ARSUBR + + PUSH P,FLAGS + MOVSI A,TRSUBR ; FIND FIXUPS + MOVE B,(TP) + HLRE D,1(B) ; -LENGTH OF CODE VEC + PUSH P,D ; SAVE SAME + MOVSI C,TATOM + MOVE D,MQUOTE RSUBR + PUSHJ P,IGET ; GO GET THEM + JUMPE B,RCANT ; NO FIXUPS, BINARY LOSES + PUSH TP,A ; SAVE FIXUP LIST + PUSH TP,B + + MOVNI A,1 ; USE ^C AS MARKER FOR RSUBR + MOVE FLAGS,-1(P) ; RESTORE FLAGS + MOVE B,-4(TP) ; GET CHANNEL FOR PITYO + PUSHJ P,PITYO ; OUT IT GOES + +PRSBR1: MOVE B,-4(TP) + PUSHJ P,BFCLS1 ; FLUSH OUT CURRENT BUFFER + + MOVE B,-4(TP) ; CHANNEL BACK + MOVN E,(P) ; LENGTH OF CODE + PUSH P,E + HRROI A,(P) ; POINT TO SAME + PUSHJ P,DOIOTO ; OUT GOES COUNT + MOVSI C,TCODE + MOVEM C,ASTO(PVP) ; FOR IOT INTERRUPTS + MOVE A,-2(TP) ; GET POINTER TO CODE + MOVE A,1(A) + PUSHJ P,DOIOTO ; IOT IT OUT + POP P,E + ADDI E,1 ; UPDATE ACCESS + ADDM E,ACCESS(B) + SETZM ASTO(PVP) ; UNSCREW A + +; NOW PRINT OUT NORMAL RSUBR VECTOR + + MOVE FLAGS,-1(P) ; RESTORE FLAGS + SUB P,[1,,1] + MOVE B,-2(TP) ; GET RSUBR VECTOR + PUSHJ P,PRBODY ; PRINT ITS BODY + +; HERE TO PRINT BINARY FIXUPS + + MOVEI E,0 ; 1ST COMPUTE LENGTH OF FIXUPS + SKIPN A,(TP) ; LIST TO A + JRST PRSBR5 ; EMPTY, DONE + JUMPL A,UFIXES ; JUMP IF FIXUPS IN UVECTOR FORM + ADDI E,1 ; FOR VERS + +PRSBR6: HRRZ A,(A) ; NEXT? + JUMPE A,PRSBR5 + GETYP B,(A) + CAIE B,TDEFER ; POSSIBLE STRING + JRST PRSBR7 ; COULD BE ATOM + MOVE B,1(A) ; POSSIBLE STRINGER + GETYP C,(B) + CAIE C,TCHSTR ; YES!!! + JRST BADFXU ; LOSING FIXUPS + HRRZ C,(B) ; # OF CHARS TO C + ADDI C,5+5 ; ROUND AND ADD FOR COUNT + IDIVI C,5 ; TO WORDS + ADDI E,(C) + JRST FIXLST ; COUNT FOR USE LIST ETC. + +PRSBR7: GETYP B,(A) ; GET TYPE + CAIE B,TATOM + JRST BADFXU + ADDI E,1 + +FIXLST: HRRZ A,(A) ; REST IT TO OLD VAL + JUMPE A,BADFXU + GETYP B,(A) ; FIX? + CAIE B,TFIX + JRST BADFXU + MOVEI D,1 + HRRZ A,(A) ; TO USE LIST + JUMPE A,BADFXU + GETYP B,(A) + CAIE B,TLIST + JRST BADFXU ; LOSER + MOVE C,1(A) ; GET LIST + +PRSBR8: JUMPE C,PRSBR9 + GETYP B,(C) ; TYPE OK? + CAIE B,TFIX + JRST BADFXU + HRRZ C,(C) + AOJA D,PRSBR8 ; LOOP + +PRSBR9: ADDI D,2 ; ROUND UP + ASH D,-1 ; DIV BY 2 FOR TWO GOODIES PER HWORD + ADDI E,(D) + JRST PRSBR6 + +PRSBR5: PUSH P,E ; SAVE LENGTH OF FIXUPS + PUSH TP,$TUVEC ; SLOT FOR BUFFER POINTER + PUSH TP,[0] + +PFIXU1: MOVE B,-6(TP) ; START LOOPING THROUGH CHANNELS + PUSHJ P,BFCLS1 ; FLUSH BUFFER + MOVE B,-6(TP) ; CHANNEL BACK + MOVEI C,BUFSTR-1(B) ; SETUP BUFFER + PUSHJ P,BYTDOP ; FIND D.W. + SUBI A,BUFLNT+1 + HRLI A,-BUFLNT + MOVEM A,(TP) + MOVE E,(P) ; LENGTH OF FIXUPS + SETZB C,D ; FOR EOUT + PUSHJ P,EOUT + MOVE C,-2(TP) ; FIXUP LIST + MOVE E,1(C) ; HAVE VERS + PUSHJ P,EOUT ; OUT IT GOES + +PFIXU2: HRRZ C,(C) ; FIRST THING + JUMPE C,PFIXU3 ; DONE? + GETYP A,(C) ; STRING OR ATOM + CAIN A,TATOM ; MUST BE STRING + JRST PFIXU4 + MOVE A,1(C) ; POINT TO POINTER + HRRZ D,(A) ; LENGTH + IDIVI D,5 + PUSH P,E ; SAVE REMAINDER + MOVEI E,1(D) + MOVNI D,(D) + MOVSI D,(D) + PUSH P,D + PUSHJ P,EOUT + MOVEI D,0 +PFXU1A: MOVE A,1(C) ; RESTORE POINTER + HRRZ A,1(A) ; BYTE POINTER + ADD A,(P) + MOVE E,(A) + PUSHJ P,EOUT + MOVE A,[1,,1] + ADDB A,(P) + JUMPL A,PFXU1A + MOVE D,-1(P) ; LAST WORD + MOVE A,1(C) + HRRZ A,1(A) + ADD A,(P) + SKIPE E,D + MOVE E,(A) ; LAST WORD OF CHARS + IOR E,PADS(D) + PUSHJ P,EOUT ; OUT + SUB P,[1,,1] + JRST PFIXU5 + +PADS: ASCII /#####/ + ASCII /####/ + ASCII /###/ + ASCII /##/ + ASCII /#/ + +PFIXU4: HRRZ E,(C) ; GET CURRENT VAL + MOVE E,1(E) + PUSHJ P,ATOSQ ; GET SQUOZE + JRST BADFXU + TLO E,400000 ; USE TO DIFFERENTIATE BETWEEN STRING + PUSHJ P,EOUT + +; HERE TO WRITE OUT LISTS + +PFIXU5: HRRZ C,(C) ; POINT TO CURRENT VALUE + HRLZ E,1(C) + HRRZ C,(C) ; POINT TO USES LIST + HRRZ D,1(C) ; GET IT + +PFIXU6: TLCE D,400000 ; SKIP FOR RH + HRLZ E,1(D) ; SETUP LH + JUMPG D,.+3 + HRR E,1(D) + PUSHJ P,EOUT ; WRITE IT OUT + HRR D,(D) + TRNE D,-1 ; SKIP IF DONE + JRST PFIXU6 + + TRNE E,-1 ; SKIP IF ZERO BYTE EXISTS + MOVEI E,0 + PUSHJ P,EOUT + JRST PFIXU2 ; DO NEXT + +PFIXU3: HLRE C,(TP) ; -AMNT LEFT IN BUFFER + MOVN D,C ; PLUS SAME + ADDI C,BUFLNT ; WORDS USED TO C + JUMPE C,PFIXU7 ; NONE USED, LEAVE + MOVSS C ; START SETTING UP BTB + MOVN A,C ; ALSO FINAL IOT POINTER + HRR C,(TP) ; PDL POINTER PART OF BTB + SUBI C,1 + HRLI D,C ; CONTINUE SETTING UP BTB + POP C,@D ; MOVE 'EM DOWN + TLNE C,-1 + JRST .-2 + HRRI A,@D ; OUTPUT POINTER + ADDI A,1 + MOVSI B,TUVEC + MOVEM B,ASTO(PVP) + MOVE B,-6(TP) + PUSHJ P,DOIOTO ; WRITE IT OUT + SETZM ASTO(PVP) + +PFIXU7: SUB TP,[4,,4] + SUB P,[2,,2] + JRST PNEXT + +; ROUTINE TO OUTPUT CONTENTS OF E + +EOUT: MOVE B,-6(TP) ; CHANNEL + AOS ACCESS(B) + MOVE A,(TP) ; BUFFER POINTER + MOVEM E,(A) + AOBJP A,.+3 ; COUNT AND GO + MOVEM A,(TP) + POPJ P, + + SUBI A,BUFLNT ; SET UP IOT POINTER + HRLI A,-BUFLNT + MOVEM A,(TP) ; RESET SAVED POINTER + MOVSI 0,TUVEC + MOVEM 0,ASTO(PVP) + MOVSI 0,TLIST + MOVEM 0,DSTO(PVP) + MOVEM 0,CSTO(PVP) + PUSHJ P,DOIOTO ; OUT IT GOES + SETZM ASTO(PVP) + SETZM CSTO(PVP) + SETZM DSTO(PVP) + POPJ P, + +; HERE IF UVECOR FORM OF FIXUPS + +UFIXES: PUSH TP,$TUVEC + PUSH TP,A ; SAVE IT + +UFIX1: MOVE B,-6(TP) ; GET SAME + PUSHJ P,BFCLS1 ; FLUSH OUT BUFFER + HLRE C,(TP) ; GET LENGTH + MOVMS C + PUSH P,C + HRROI A,(P) ; READY TO ZAP IT OUT + PUSHJ P,DOIOTO ; ZAP! + SUB P,[1,,1] + HLRE C,(TP) ; LENGTH BACK + MOVMS C + ADDI C,1 + ADDM C,ACCESS(B) ; UPDATE ACCESS + MOVE A,(TP) ; NOW THE UVECTOR + MOVSI C,TUVEC + MOVEM C,ASTO(PVP) + PUSHJ P,DOIOTO ; GO + SETZM ASTO(PVP) + SUB P,[1,,1] + SUB TP,[4,,4] + JRST PNEXT + +RCANT: PUSH TP,$TATOM + PUSH TP,EQUOTE RSUBR-LACKS-FIXUPS + JRST CALER1 + + +BADFXU: PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-FIXUPS + JRST CALER1 + +PRBODY: TDZA C,C ; FLAG SAYING FLUSH CODE +PRBOD1: MOVEI C,1 ; PRINT CODE ALSO + PUSH P,FLAGS + PUSH TP,$TRSUBR + PUSH TP,B + PUSH P,C + MOVEI A,"[ ; START VECTOR TEXT + MOVE B,-6(TP) ; GET CHANNEL FOR PITYO + PUSHJ P,PITYO + POP P,C + MOVE B,(TP) ; RSUBR BACK + JUMPN C,PRSON ; GO START PRINTING + MOVEI A,"0 ; PLACE SAVER FOR CODE VEC + MOVE B,-6(TP) ; GET CHANNEL FOR PITYO + PUSHJ P,PITYO + +PRSBR2: MOVE B,[2,,2] ; BUMP VECTOR + ADDB B,(TP) + JUMPGE B,PRSBR3 ; NO SPACE IF LAST + MOVE B,-6(TP) ; GET CHANNEL FOR SPACEQ + PUSHJ P,SPACEQ + SKIPA B,(TP) ; GET BACK POINTER +PRSON: JUMPGE B,PRSBR3 + GETYP 0,(B) ; SEE IF RSUBR POINTED TO + CAIN 0,TENTER + JRST .+3 ; JUMP IF RSUBR ENTRY + CAIE 0,TRSUBR ; YES! + JRST PRSB10 ; COULD BE SUBR/FSUBR + MOVE C,1(B) ; GET RSUBR + PUSH P,0 ; SAVE TYPE FOUND + GETYP 0,2(C) ; SEE IF ATOM + CAIE 0,TATOM + JRST PRSBR4 + MOVE B,3(C) ; GET ATOM NAME + PUSHJ P,IGVAL ; GO LOOK + MOVE C,(TP) ; ORIG RSUBR BACK + GETYP A,A + POP P,0 ; DESIRED TYPE + CAIE 0,(A) ; SAME TYPE + JRST PRSBR4 + MOVE D,1(C) + MOVE 0,3(D) ; NAME OF RSUBR IN QUESTION + CAME 0,3(B) ; WIN? + JRST PRSBR4 + MOVEM 0,1(C) + MOVSI A,TATOM + MOVEM A,(C) ; UNLINK + +PRSBR4: MOVE FLAGS,(P) ; RESTORE FLAGS + MOVE B,(TP) + MOVE A,(B) + MOVE B,1(B) ; PRINT IT + PUSH TP,-7(TP) ; PUSH CHANNEL FOR IPRINT + PUSH TP,-7(TP) + PUSHJ P,IPRINT + SUB TP,[2,,2] ; POP OFF CHANNEL + JRST PRSBR2 + +PRSB10: CAIE 0,TSUBR ; SUBR? + CAIN 0,TFSUBR + JRST .+2 + JRST PRSBR4 + MOVE C,1(B) ; GET LOCN OF SUBR OR FSUBR + MOVE C,@-1(C) ; NAME OF IT + MOVEM C,1(B) ; SMASH + MOVSI C,TATOM ; AND TYPE + MOVEM C,(B) + JRST PRSBR4 + +PRSBR3: MOVEI A,"] + MOVE B,-6(TP) + PUSHJ P,PRETIF ; CLOSE IT UP + SUB TP,[2,,2] ; FLUSH CRAP + POP P,FLAGS + POPJ P, + + + ; HERE TO PRINT PURE RSUBRS + +PRSBRP: MOVEI A,2 ; WILL "%<" FIT? + MOVE B,-2(TP) ; GET CHANNEL FOR RETIF + PUSHJ P,RETIF + MOVEI A,"% + PUSHJ P,PITYO + MOVEI A,"< + PUSHJ P,PITYO + MOVSI A,TATOM + MOVE B,MQUOTE RSUBR + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT ; PRINT IT OUT + SUB TP,[2,,2] ; POP OFF CHANNEL + MOVE B,-2(TP) + PUSHJ P,SPACEQ ; MAYBE SPACE + MOVEI A,"' ; QUOTE THE VECCTOR + PUSHJ P,PRETIF + MOVE B,(TP) ; GET RSUBR BODY BACK + PUSH TP,$TFIX ; STUFF THE STACK + PUSH TP,[0] + PUSHJ P,PRBOD1 ; PRINT AND UNLINK + SUB TP,[2,,2] ; GET JUNK OFF STACK + MOVE B,-2(TP) ; GET CHANNEL FOR RETIF + MOVEI A,"> + PUSHJ P,PRETIF + JRST PNEXT + +; HERE TO PRINT ASCII RSUBRS + +ARSUBR: PUSH P,FLAGS ; SAVE FROM GET + MOVSI A,TRSUBR + MOVE B,(TP) + MOVSI C,TATOM + MOVE D,MQUOTE RSUBR + PUSHJ P,IGET ; TRY TO GET FIXUPS + POP P,FLAGS + JUMPE B,PUNK ; NO FIXUPS LOSE + GETYP A,A + CAIE A,TLIST ; ARE FIXUPS A LIST? + JRST PUNK ; NO, AGAIN LOSE + PUSH TP,$TLIST + PUSH TP,B ; SAVE FIXUPS + MOVEI A,17. + + MOVE B,-4(TP) + PUSHJ P,RETIF + PUSH P,[440700,,[ASCIZ /% + PUSHJ P,PRETIF + JRST PNEXT + + ; HERE TO DO LOCATIVES (PRINT CONTENTS THEREOF) + +LOCP: PUSH TP,-1(TP) + PUSH TP,-1(TP) + PUSH P,0 + MCALL 1,IN ; GET ITS CONTENTS FROM "IN" + POP P,0 + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT ; PRINT IT + SUB TP,[2,,2] ; POP CHANNEL OFF STACK + JRST PNEXT + ;INTERNAL SUBROUTINE TO HANDLE CHARACTER OUTPUT +;B CONTAINS CHANNEL +;PRINTER ITYO USED FOR FLATSIZE FAKE OUT +PITYO: TLNN FLAGS,FLTBIT + JRST ITYO +PITYO1: PUSH TP,[TTP,,0] ; PUSH ON TP POINTER + PUSH TP,B + TLNE FLAGS,UNPRSE ;SKIPS UNPRSE NOT SET + JRST ITYO+2 + AOS FLTSIZ ;FLATSIZE DOESN'T PRINT + ;INSTEAD IT COUNTS THE CHARACTERS THAT WOULD BE OUTPUT + SOSGE FLTMAX ;UNLESS THE MAXIMUM IS EXCEEDED + JRST .+4 + POP TP,B ; GET CHANNEL BACK + SUB TP,[1,,1] + POPJ P, + MOVEI E,(B) ; GET POINTER FOR UNBINDING + PUSHJ P,SSPEC1 + MOVE P,UPB+8 ; RESTORE P + POP TP,B ; GET BACK TP POINTER + PUSH P,0 ; SAVE FLAGS + MOVE TP,B ; RESTORE TP +PITYO3: MOVEI C,(TB) + CAILE C,1(TP) + JRST PITYO2 + POP P,0 ; RESTORE FLAGS + MOVSI A,TFALSE ;IN WHICH CASE IT IMMEDIATELY GIVES UP AND RETURNS FALSE + MOVEI B,0 + POPJ P, + +PITYO2: HRR TB,OTBSAV(TB) ; RESTORE TB + JRST PITYO3 + + + ;THE REAL THING +;NOTE THAT THE FOLLOWING CODE HAS BUGS IF IT IS PRINTING OUT LONG +;CHARACTER STRINGS +; (NOTE THAT THE ABOVE COMMENT, IF TRUE, SHOULD NOT BE ADMITTED.) +ITYO: PUSH TP,$TCHAN + PUSH TP,B + PUSH P,FLAGS ;SAVE STUFF + PUSH P,C +ITYOCH: PUSH P,A ;SAVE OUTPUT CHARACTER + + +ITYO1: TLNE FLAGS,UNPRSE ;SKIPS UNPRSE NOT SET + JRST UNPROUT ;IF FROM UNPRSE, STASH IN STRING + CAIE A,^L ;SKIP IF THIS IS A FORM-FEED + JRST NOTFF + SETZM LINPOS(B) ;ZERO THE LINE NUMBER + JRST ITYXT + +NOTFF: CAIE A,15 ;SKIP IF IT IS A CR + JRST NOTCR + SETZM CHRPOS(B) ;ZERO THE CHARACTER POSITION + PUSHJ P,WXCT ;OUTPUT THE C-R + PUSHJ P,AOSACC ; BUMP COUNT + AOS C,LINPOS(B) ;ADD ONE TO THE LINE NUMBER + CAMG C,PAGLN(B) ;SKIP IF THIS TAKES US PAST PAGE END + JRST ITYXT1 + + SETZM LINPOS(B) ;ZERO THE LINE POSITION +; PUSHJ P,WXCT ; REMOVED FOR NOW +; PUSHJ P,AOSACC +; MOVEI A,^L ; DITTO + JRST ITYXT1 + +NOTCR: CAIN A,^I ;SKIP IF NOT TAB + JRST TABCNT + CAIE A,10 ; BACK SPACE + JRST .+3 + SOS CHRPOS(B) ; BACK UP ONE + JRST ITYXT + CAIE A,^J ;SKIP IF LINE FEED + AOS CHRPOS(B) ;ADD TO CHARACTER NUMBER + +ITYXT: PUSHJ P,AOSACC ; BUMP ACCESS +ITYXTA: PUSHJ P,WXCT ;OUTPUT THE CHARACTER +ITYXT1: POP P,A ;RESTORE THE ORIGINAL CHARACTER + +ITYRET: POP P,C ;RESTORE REGS & RETURN + POP P,FLAGS + POP TP,B ; GET CHANNEL BACK + SUB TP,[1,,1] + POPJ P, + +TABCNT: PUSH P,D + MOVE C,CHRPOS(B) + ADDI C,8. ;INCREMENT COUNT BY EIGHT (MOD EIGHT) + IDIVI C,8. + IMULI C,8. + MOVEM C,CHRPOS(B) ;REPLACE COUNT + POP P,D + JRST ITYXT + +UNPROUT: POP P,A ;GET BACK THE ORIG CHAR + IDPB A,UPB+2 ;DEPOSIT USING BYTE POINTER I PUSHED LONG AGO + SOS UPB+1 + JRST ITYRET ;RETURN + +AOSACC: TLNN FLAGS,BINBIT + JRST NRMACC + AOS C,ACCESS-1(B) ; COUNT CHARS IN WORD + CAMN C,[TFIX,,1] + AOS ACCESS(B) + CAMN C,[TFIX,,5] + HLLZS ACCESS-1(B) + POPJ P, + +NRMACC: AOS ACCESS(B) + POPJ P, + +SPACEQ: MOVEI A,40 + TLNE FLAGS,FLTBIT+BINBIT + JRST PITYO ; JUST OUTPUT THE SPACE + PUSH P,[1] ; PRINT SPACE IF NOT END OF LINE + MOVEI A,1 + JRST RETIF2 + +RETIF1: MOVEI A,1 + +RETIF: PUSH P,[0] + TLNE FLAGS,FLTBIT+BINBIT + JRST SPOPJ ; IF WE ARE IN FLATSIZE THEN ESCAPE +RETIF2: PUSH P,FLAGS +RETCH: PUSH P,A + +RETCH1: ADD A,CHRPOS(B) ;ADD THE CHARACTER POSITION + SKIPN CHRPOS(B) ; IF JUST RESET, DONT DO IT AGAIN + JRST RETXT + CAMG A,LINLN(B) ;SKIP IF GREATER THAN LINE LENGTH + JRST RETXT1 + + MOVEI A,^M ;FORCE A CARRIAGE RETURN + SETZM CHRPOS(B) + PUSHJ P,WXCT + PUSHJ P,AOSACC ; BUMP CHAR COUNT + MOVEI A,^J ;AND FORCE A LINE FEED + PUSHJ P,WXCT + PUSHJ P,AOSACC ; BUMP CHAR COUNT + AOS A,LINPOS(B) + CAMG A,PAGLN(B) ;AT THE END OF THE PAGE ? + JRST RETXT +; MOVEI A,^L ;IF SO FORCE A FORM FEED +; PUSHJ P,WXCT +; PUSHJ P,AOSACC ; BUMP CHAR COUNT + SETZM LINPOS(B) + +RETXT: POP P,A + + POP P,FLAGS +SPOPJ: SUB P,[1,,1] + POPJ P, ;RETURN + +PRETIF: PUSH P,A ;SAVE CHAR + PUSHJ P,RETIF1 + POP P,A + JRST PITYO + +RETIF3: TLNE FLAGS,FLTBIT ; NOTHING ON FLATSIZE + POPJ P, + PUSH P,[0] + PUSH P,FLAGS + HRRI FLAGS,2 ; PRETEND ONLY 1 CHANNEL + PUSH P,A + JRST RETCH1 + +RETXT1: SKIPN -2(P) ; SKIP IF SPACE HACK + JRST RETXT + MOVEI A,40 + PUSHJ P,WXCT + AOS CHRPOS(B) + PUSH P,C + PUSHJ P,AOSACC + POP P,C + JRST RETXT + + ;THIS IS CODE TO HANDLE UNKNOWN DATA TYPES. +;IT PRINTS "*XXXXXX*XXXXXXXXXXXX*", WHERE THE FIRST NUMBER IS THE +;TYPE CODE IN OCTAL, THE SECOND IS THE VALUE FIELD IN OCTAL. +PRERR: MOVEI A,21. ;CHECK FOR 21. SPACES LEFT ON PRINT LINE + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,RETIF ;INSERT CARRIAGE RETURN IF NOT ENOUGH + MOVEI A,"* ;JUNK TO INDICATE ERROR PRINTOUT IN OCTAL + PUSHJ P,PITYO ;TYPE IT + + MOVE E,[000300,,-2(TP)] ;GET POINTER INDEXED OFF TP SO THAT + ;TYPE CODE MAY BE OBTAINED FOR PRINTING. + MOVEI D,6 ;# OF OCTAL DIGITS IN HALF WORD +OCTLP1: ILDB A,E ;GET NEXT 3-BIT BYTE OF TYPE CODE + IORI A,60 ;OR-IN 60 FOR ASCII DIGIT + PUSHJ P,PITYO ;PRINT IT + SOJG D,OCTLP1 ;REPEAT FOR SIX CHARACTERS + +PRE01: MOVEI A,"* ;DELIMIT TYPE CODE FROM VALUE FIELD + PUSHJ P,PITYO + + HRLZI E,(410300,,(TP)) ;BYTE POINTER TO SECOND WORD + ;INDEXED OFF TP + MOVEI D,12. ;# OF OCTAL DIGITS IN A WORD +OCTLP2: LDB A,E ;GET 3 BITS + IORI A,60 ;CONVERT TO ASCII + PUSHJ P,PITYO ;PRINT IT + IBP E ;INCREMENT POINTER TO NEXT BYTE + SOJG D,OCTLP2 ;REPEAT FOR 12. CHARS + + MOVEI A,"* ;DELIMIT END OF ERROR TYPEOUT + PUSHJ P,PITYO ;REPRINT IT + + JRST PNEXT ;RESTORE REGS & POP UP ONE LEVEL TO CALLER + +POCTAL: MOVEI A,14. ;RETURN TO NEW LINE IF 14. SPACES NOT LEFT + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,RETIF + JRST PRE01 ;PRINT VALUE AS "*XXXXXXXXXXXX*" + + ;PRINT BINARY INTEGERS IN DECIMAL. +; +PFIX: MOVM E,(TP) ; GET # (MAFNITUDE) + JUMPL E,POCTAL ; IF ABS VAL IS NEG, MUST BE SETZ + PUSH P,FLAGS + +PFIX1: MOVE B,-2(TP) ; GET CHANNEL INTO B +PFIX2: MOVE D,UPB+6 ; IF UNPARSE, THIS IS RADIX + TLNE FLAGS,UNPRSE+FLTBIT ;SKIPS IF NOT FROM UNPARSE OR FLATSIZE + JRST PFIXU + MOVE D,RADX(B) ; GET OUTPUT RADIX +PFIXU: CAIG D,1 ; DONT ALLOW FUNNY RADIX + MOVEI D,10. ; IF IN DOUBT USE 10. + PUSH P,D + MOVEI A,1 ; START A COUNTER + SKIPGE B,(TP) ; CHECK SIGN + MOVEI A,2 ; NEG, NEED CHAR FOR SIGN + + IDIV B,D ; START COUNTING + JUMPE B,.+2 + AOJA A,.-2 + + MOVE B,-2(TP) ; CHANNEL TO B + TLNN FLAGS,FLTBIT+BINBIT + PUSHJ P,RETIF3 ; CHECK FOR C.R. + MOVE B,-2(TP) ; RESTORE CHANNEL + MOVEI A,"- ; GET SIGN + SKIPGE (TP) ; SKIP IF NOT NEEDED + PUSHJ P,PITYO + MOVM C,(TP) ; GET MAGNITUDE OF # + MOVE B,-2(TP) ; RESTORE CHANNEL + POP P,E ; RESTORE RADIX + PUSHJ P,FIXTYO ; WRITE OUT THE # + MOVE FLAGS,-1(P) + SUB P,[1,,1] ; FLUSH P STUFF + JRST PNEXT + +FIXTYO: IDIV C,E + HRLM D,(P) ; SAVE REMAINDER + SKIPE C + PUSHJ P,FIXTYO + HLRZ A,(P) ; START GETTING #'S BACK + ADDI A,60 + MOVE B,-2(TP) ; CHANNEL BACK + JRST PITYO + + ;PRINT SINGLE-PRECISION FLOATING POINT NUMBERS IN DECIMAL. +; +PFLOAT: SKIPN A,(TP) ; SKIP IF NUMBER IS NON-ZERO (SPECIAL HACK FOR ZERO) + JRST PFLT0 ; HACK THAT ZERO + MOVM E,A ; CHECK FOR NORMALIZED + TLNN E,400 ; NORMALIZED + JRST PUNK + MOVEI E,FLOATB ;ADDRESS OF FLOATING POINT CONVERSION ROUTINE + MOVE D,[6,,6] ;# WORDS TO GET FROM STACK + +PNUMB: HRLI A,1(P) ;LH(A) TO CONTAIN ADDRESS OF RETURN AREA ON STACK + HRR A,TP ;RH(A) TO CONTAIN ADDRESS OF DATA ITEM + HLRZ B,A ;SAVE RETURN AREA ADDRESS IN REG B + ADD P,D ;ADD # WORDS OF RETURN AREA TO BOTH HALVES OF SP + JUMPGE P,PDLERR ;PLUS OR ZERO STACK POINTER IS OVERFLOW +PDLWIN: PUSHJ P,(E) ;CALL ROUTINE WHOSE ADDRESS IS IN REG E + + MOVE C,(B) ;GET COUNT 0F # CHARS RETURNED + MOVE A,C ;MAKE SURE THAT # WILL FIT ON PRINT LINE +PFLT1: PUSH P,B ; SAVE B + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,RETIF ;START NEW LINE IF IT WON'T + POP P,B ; RESTORE B + + HRLI B,000700 ;MAKE REG B INTO BYTE POINTER TO FIRST CHAR LESS ONE +PNUM01: ILDB A,B ;GET NEXT BYTE + PUSH P,B ;SAVE B + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,PITYO ;PRINT IT + + P,B ; RESTORE B + SOJG C,PNUM01 ;DECREMENT CHAR COUNT: LOOP IF NON-ZERO + + SUB P,D ;SUBTRACT # WORDS USED ON STACK FOR RETURN + JRST PNEXT ;STORE REGS & POP UP ONE LEVEL TO CALLER + + +PFLT0: MOVEI A,9. ; WIDTH OF 0.0000000 + MOVEI C,9. ; SEE ABOVE + MOVEI D,0 ; WE'RE GONNA TEST D SOON...SO WILL DO RIGHT THING + MOVEI B,[ASCII /0.0000000/] + SOJA B,PFLT1 ; PT TO 1 BELOW CONST, THEN REJOIN CODE + + + + +PDLERR: SUB P,D ;REST STACK POINTER +REPEAT 6,PUSH P,[0] + JRST PDLWIN + ;PRINT SHORT (ONE WORD) CHARACTER STRINGS +; +PCHRS: MOVEI A,3 ;MAX # CHARS PLUS 2 (LESS ESCAPES) + MOVE B,-2(TP) ; GET CHANNEL INTO B + TLNE FLAGS,NOQBIT ;SKIP IF QUOTES WILL BE USED + MOVEI A,1 ;ELSE, JUST ONE CHARACTER POSSIBLE + PUSHJ P,RETIF ;NEW LINE IF INSUFFICIENT SPACE + TLNE FLAGS,NOQBIT ;DON'T QUOTE IF IN PRINC MODE + JRST PCASIS + MOVEI A,"! ;TYPE A EXCL + PUSHJ P,PITYO + MOVEI A,"" ;AND A DOUBLE QUOTE + PUSHJ P,PITYO + +PCASIS: MOVE A,(TP) ;GET NEXT BYTE FROM WORD + TLNE FLAGS,NOQBIT ;SKIP IF WE ARE NOT IN PRINC MODE (NOQBIT=0) + JRST PCPRNT ;IF BIT IS ON, PRINT WITHOUT ESCAPING + CAIE A,ESCHAR ;SKIP IF NOT THE ESCAPE CHARACTER + JRST PCPRNT ;ESCAPE THE ESCAPE CHARACTER + +ESCPRT: MOVEI A,ESCHAR ;TYPE THE ESCAPE CHARACTER + PUSHJ P,PITYO + +PCPRNT: MOVE A,(TP) ;GET THE CHARACTER AGAIN + PUSHJ P,PITYO ;PRINT IT + JRST PNEXT + + + ;PRINT DEFERED (INVISIBLE) ITEMS. (PRINTED AS THE THING POINTED TO) +; +PDEFER: MOVE A,(B) ;GET FIRST WORD OF ITEM + MOVE B,1(B) ;GET SECOND + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT ;PRINT IT + SUB TP,[2,,2] ; POP OFF CHANNEL + JRST PNEXT ;GO EXIT + + +; Print an ATOM. TRAILERS are added if the atom is not in the current +; lexical path. Also escaping of charactets is performed to allow READ +; to win. + +PATOM: PUSH P,[440700,,D] ; PUSH BYE POINTER TO FINAL STRING + SETZB D,E ; SET CHARCOUNT AD DESTINATION TO 0 + HLLZS -1(TP) ; RH OF TATOM,, WILL COUNT ATOMS IN PATH + +PATOM0: PUSH TP,$TPDL ; SAVE CURRENT STAKC FOR \ LOGIC + PUSH TP,P + LDB A,[301400,,(P)] ; GET BYTE PTR POSITION + DPB A,[301400,,E] ; SAVE IN E + MOVE C,-2(TP) ; GET ATOM POINTER + ADD C,[3,,3] ; POINT TO PNAME + HLRE A,C ; -# WORDS TO A + PUSH P,A ; PUSH THAT FOR "AOSE" + MOVEI A,177 ; PUT RUBOUT WHERE \ MIGHT GO + JSP B,DOIDPB + HRLI C,440700 ; BUILD BYET POINTER + +PATOM1: ILDB A,C ; GET A CHAR + JUMPE A,PATDON ; END OF PNAME? + TLNN C,760000 ; SKIP IF NOT WORD BOUNDARY + AOS (P) ; COUNT WORD + JRST PENTCH ; ENTER THE CHAR INTO OUTPUT + +PATDON: LDB A,[220600,,E] ; GET "STATE" + LDB A,STABYT+6 ; SIMULATE "END" CHARACTER + DPB A,[220600,,E] ; AND STORE + MOVE B,E ; SETUP BYTE POINTER TO 1ST CHAR + TLZ B,77 + HRR B,(TP) ; POINT + SUB TP,[2,,2] ; FLUSH SAVED PDL + MOVE C,-1(P) ; GET BYE POINTER + SUB P,[2,,2] ; FLUSH + PUSH P,D + MOVEI A,0 + IDPB A,B + AOS -1(TP) ; COUNT ATOMS + TLNE FLAGS,NOQBIT ; SKIP IF NOT "PRINC" + JRST NOLEX4 ; NEEDS NO LEXICAL TRAILERS + MOVEI A,"\ ; GET QUOTER + TLNN E,2 ; SKIP IF NEEDED + JRST PATDO1 + SOS -1(TP) ; DONT COUNT BECAUSE OF SLASH + DPB A,B ; CLOBBER +PATDO1: MOVEI E,(E) ; CLEAR LH(E) + PUSH P,C ; SAVE BYTER + PUSH P,E ; ALSO CHAR COUNT + + MOVE B,IMQUOTE OBLIST + PUSH P,FLAGS + PUSHJ P,IDVAL ; GET LOCAL/GLOBAL VALUE + POP P,FLAGS ; AND RESTORES FLAGS + MOVE C,(TP) ; GET ATOM BACK + SKIPN C,2(C) ; GET ITS OBLIST + AOJA A,NOOBL1 ; NONE, USE FALSE + JUMPL C,.+3 ; JUMP IF REAL OBLIST + ADDI C,(TVP) ; ELSE MUST BE OFFSET + MOVE C,(C) + CAME A,$TLIST ; SKIP IF A LIST + CAMN A,$TOBLS ; SKIP IF UNREASONABLE VALUE + JRST CHOBL ; WINS, NOW LOCATE IT + +CHROOT: CAME C,ROOT+1(TVP) ; IS THIS ROOT? + JRST FNDOBL ; MUST FIND THE PATH NAME + POP P,E ; RESTORE CHAR COUNT + MOVE D,(P) ; AND PARTIAL WORD + EXCH D,-1(P) ; STORE BYTE POINTER AND GET PARTIAL WORD + MOVEI A,"! ; PUT OUT MAGIC + JSP B,DOIDPB ; INTO BUFFER + MOVEI A,"- + JSP B,DOIDPB + MOVEI A,40 + JSP B,DOIDPB + +NOLEX0: SUB P,[2,,2] ; REMOVE COUNTER AND BYTE POINTER + PUSH P,D ; PUSH NEXT WORD IF ANY + JRST NOLEX4 + +NOLEX: MOVE E,(P) ; GET COUNT + SUB P,[2,,2] +NOLEX4: MOVEI E,(E) ; CLOBBER LH(E) + MOVE A,E ; COUNT TO A + SKIPN (P) ; FLUSH 0 WORD + SUB P,[1,,1] + HRRZ C,-1(TP) ; GET # OF ATOMS + SUBI A,(C) ; FIX COUNT + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,RETIF ; MAY NEED C.R. + MOVEI C,-1(E) ; COMPUTE WORDS-1 + IDIVI C,5 ; WORDS-1 TO C + HRLI C,(C) + MOVE D,P + SUB D,C ; POINTS TO 1ST WORD OF CHARS + MOVSI C,440700+D ; BYTEPOINTER TO STRING + PUSH TP,$TPDL ; SAVE FROM GC + PUSH TP,D + +PATOUT: ILDB A,C ; READ A CHAR + SKIPE A ; IGNORE NULS + PUSHJ P,PITYO ; PRINT IT + MOVE D,(TP) ; RESTORE POINTER + SOJG E,PATOUT + +NOLEXD: SUB TP,[2,,2] ; FLUSH TP JUNK + MOVE P,D ; RESTORE P + SUB P,[1,,1] + JRST PNEXT + + +PENTCH: TLNE FLAGS,NOQBIT ; "PRINC"? + JRST PENTC1 ; YES, AVOID SLASHING + IDIVI A,CHRWD ; GET CHARS TYPE + LDB B,BYTPNT(B) + CAIL B,6 ; SKIP IF NOT SPECIAL + JRST PENTC2 ; SLASH IMMEDIATE + LDB A,[220600,,E] ; GET "STATE" + LDB A,STABYT-1(B) ; GET NEW STATE + DPB A,[220600,,E] ; AND SAVE IT +PENTC3: LDB A,C ; RESTORE CHARACTER +PENTC1: JSP B,DOIDPB + SKIPGE (P) ; SKIP IF DONE + JRST PATOM1 ; CONTINUE + JRST PATDON + +PENTC2: MOVEI A,"\ ; GET CHAR QUOTER + JSP B,DOIDPB ; NEEDED, DO IT + MOVEI A,4 ; PATCH FOR ATOMS ALREADY BACKSLASHED + JRST PENTC3-1 + +; ROUTINE TO PUT ONE CHAR ON STACK BUFFER + +DOIDPB: IDPB A,-1(P) ; DEPOSIT + TRNN D,377 ; SKIP IF D FULL + AOJA E,(B) + PUSH P,(P) ; MOVE TOP OF STACK UP + MOVEM D,-2(P) ; SAVE WORDS + MOVE D,[440700,,D] + MOVEM D,-1(P) + MOVEI D,0 + AOJA E,(B) + +; CHECK FOR UNIQUENESS LOOKING INTO PATH + +CHOBL: CAME A,$TOBLS ; SINGLE OBLIST? + JRST LSTOBL ; NO, AL LIST THEREOF + CAME B,C ; THE RIGTH ONE? + JRST CHROOT ; NO, CHECK ROOT + JRST NOLEX ; WINNER, NO TRAILERS! + +LSTOBL: PUSH TP,A ; SCAN A LIST OF OBLISTS + PUSH TP,B + PUSH TP,A + PUSH TP,B + PUSH TP,$TOBLS + PUSH TP,C + +NXTOB2: INTGO ; LIST LOOP, PREVENT LOSSAGE + SKIPN C,-2(TP) ; SKIP IF NOT DONE + JRST CHROO1 ; EMPTY, CHECK ROOT + MOVE B,1(C) ; GET ONE + CAME B,(TP) ; WINNER? + JRST NXTOBL ; NO KEEP LOOKING + CAMN C,-4(TP) ; SKIP IF NOT FIRST ON LIST + JRST NOLEX1 + MOVE A,-6(TP) ; GET ATOM BACK + MOVEI D,0 + ADD A,[3,,3] ; POINT TO PNAME + PUSH P,0 ; SAVE FROM RLOOKU + PUSH P,(A) + ADDI D,5 + AOBJN A,.-2 ; PUSH THE PNAME + PUSH P,D ; AND CHAR COUNT + MOVSI A,TLIST ; TELL RLOOKU WE WIN + MOVE B,-4(TP) ; GET BACK OBLIST LIST + SUB TP,[6,,6] ; FLUSH CRAP + PUSHJ P,RLOOKU ; FIND IT + POP P,0 + CAMN B,(TP) ; SKIP IF NON UNIQUE + JRST NOLEX ; UNIQUE , NO TRAILER!! + JRST CHROO2 ; CHECK ROOT + +NXTOBL: HRRZ B,@-2(TP) ; STEP THE LIST + MOVEM B,-2(TP) + JRST NXTOB2 + + +FNDOBL: MOVE C,(TP) ; GET ATOM + MOVSI A,TOBLS + MOVE B,2(C) + JUMPL B,.+3 + ADDI B,(TVP) + MOVE B,(B) + MOVSI C,TATOM + MOVE D,IMQUOTE OBLIST + PUSH P,0 + PUSHJ P,IGET + POP P,0 +NOOBL1: POP P,E ; RESTORE CHAR COUNT + MOVE D,(P) ; GET PARTIAL WORD + EXCH D,-1(P) ; AND BYTE POINTER + CAME A,$TATOM ; IF NOT ATOM, USE FALSE + JRST NOOBL + MOVEM B,(TP) ; STORE IN ATOM SLOT + MOVEI A,"! + JSP B,DOIDPB ; WRITE IT OUT + MOVEI A,"- + JSP B,DOIDPB + SUB P,[1,,1] + JRST PATOM0 ; AND LOOP + +NOOBL: MOVE C,[440700,,[ASCIZ /!-#FALSE ()/]] + ILDB A,C + JUMPE A,NOLEX0 + JSP B,DOIDPB + JRST .-3 + + +NOLEX1: SUB TP,[6,,6] ; FLUSH STUFF + JRST NOLEX + +CHROO1: SUB TP,[6,,6] +CHROO2: MOVE C,(TP) ; GET ATOM + SKIPGE C,2(C) ; AND ITS OBLIST + JRST CHROOT + ADDI C,(TVP) + MOVE C,(C) + JRST CHROOT + + + ; STATE TABLES FOR \ OF FIRST CHAR + +RADIX 16. + +STATS: 431244000 + 434444400 + 222224200 + 434564200 + 444444400 + 454564200 + 487444200 + 484444400 + 484444200 + +RADIX 8. + +STABYT: 400400,,STATS(A) + 340400,,STATS(A) + 300400,,STATS(A) + 240400,,STATS(A) + 200400,,STATS(A) + 140400,,STATS(A) + 100400,,STATS(A) + + ;PRINT LONG CHARACTER STRINGS. +; +PCHSTR: MOVE B,(TP) + TLZ FLAGS,ATMBIT ;WE ARE NOT USING ATOM-NAME TYPE ESCAPING + PUSH P,-1(TP) ; PUSH CHAR COUNT + MOVE D,[AOS E] ;GET INSTRUCTION TO COUNT CHARACTERS + SETZM E ;ZERO COUNT + PUSHJ P,PCHRST ;GO THROUGH STRING, ESCAPING, ETC. AND COUNTING + MOVE A,E ;PUT COUNT RETURNED IN REG A + TLNN FLAGS,NOQBIT ;SKIP (NO QUOTES) IF IN PRINC (BIT ON) + ADDI A,2 ;PLUS TWO FOR QUOTES + PUSH P,B ; SAVE B + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,RETIF ;START NEW LINE IF NO SPACE + POP P,B ; RESTORE B + TLNE FLAGS,NOQBIT ;SKIP (PRINT ") IF BIT IS OFF (NOT PRINC) + JRST PCHS01 ;OTHERWISE, DON'T QUOTE + MOVEI A,"" ;PRINT A DOUBLE QUOTE + PUSH P,B ; SAVE B + MOVE B,-2(TP) + PUSHJ P,PITYO + POP P,B ; RESTORE B + +PCHS01: MOVE D,[PUSHJ P,PITYO] ;OUTPUT INSTRUCTION + MOVEM B,(TP) ;RESET BYTE POINTER + POP P,-1(TP) ; RESET CHAR COUNT + PUSHJ P,PCHRST ;TYPE STRING + + TLNE FLAGS,NOQBIT ;AGAIN, SKIP IF DOUBLE-QUOTING TO BE DONE + JRST PNEXT ;RESTORE REGS & POP UP ONE LEVEL TO CALLER + MOVEI A,"" ;PRINT A DOUBLE QUOTE + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSH P,B ; SAVE B + MOVE B,-2(TP) ; GET CHANNEL + PUSHJ P,PITYO + POP P,B ;RESTORE B + JRST PNEXT + + +;INTERNAL ROUTINE USED TO COUNT OR OUTPUT CHARACTER STRINGS. +; +;THE APPROPRIATE ESCAPING CONVENTIONS ARE USED AS DETERMINED BY THE FLAG BITS. +; +PCHRST: PUSH P,A ;SAVE REGS + PUSH P,B + PUSH P,C + PUSH P,D + +PCHR02: INTGO ; IN CASE VERY LONG STRING + HRRZ C,-1(TP) ;GET COUNT + SOJL C,PCSOUT ; DONE? + HRRM C,-1(TP) + ILDB A,(TP) ; GET CHAR + + TLNE FLAGS,NOQBIT ;SKIP IF WE ARE NOT IN PRINC MODE (NOQBIT=0) + JRST PCSPRT ;IF BIT IS ON, PRINT WITHOUT ESCAPING + CAIN A,ESCHAR ;SKIP IF NOT THE ESCAPE CHARACTER + JRST ESCPRN ;ESCAPE THE ESCAPE CHARACTER + CAIN A,"" ;SKIP IF NOT A DOUBLE QUOTE + JRST ESCPRN ;OTHERWISE, ESCAPE THE """ + IDIVI A,CHRWD ;CODE HERE FINDS CHARACTER TYPE + LDB B,BYTPNT(B) ; " + CAIGE B,6 ;SKIP IF NOT A NUMBER/LETTER + JRST PCSPRT ;OTHERWISE, PRINT IT + TLNN FLAGS,ATMBIT ;SKIP IF PRINTING AN ATOM-NAME (UNQUOTED) + JRST PCSPRT ;OTHERWISE, NO OTHER CHARS TO ESCAPE + +ESCPRN: MOVEI A,ESCHAR ;TYPE THE ESCAPE CHARACTER + PUSH P,B ; SAVE B + MOVE B,-2(TP) ; GET CHANNEL INTO B + XCT (P)-1 + POP P,B ; RESTORE B + +PCSPRT: LDB A,(TP) ;GET THE CHARACTER AGAIN + PUSH P,B ; SAVE B + MOVE B,-2(TP) ; GET CHANNEL INTO B + XCT (P)-1 ;PRINT IT + POP P,B ; RESTORE B + JRST PCHR02 ;LOOP THROUGH STRING + +PCSOUT: POP P,D + POP P,C ;RESTORE REGS & RETURN + POP P,B + POP P,A + POPJ P, + + + ;PRINT AN ARGUMENT LIST +;CHECK FOR TIME ERRORS + +PARGS: MOVEI B,-1(TP) ;POINT TO ARGS POINTER + PUSHJ P,CHARGS ;AND CHECK THEM + JRST PVEC ; CHEAT TEMPORARILY + + + +;PRINT A FRAME +PFRAME: MOVEI B,-1(TP) ;POINT TO FRAME POINTER + PUSHJ P,CHFRM + HRRZ B,(TP) ;POINT TO FRAME ITSELF + HRRZ B,FSAV(B) ;GET POINTER TO SUBROUTINE + CAMGE B,VECTOP + CAMGE B,VECBOT + SKIPA B,@-1(B) ; SUBRS AND FSUBRS + MOVE B,3(B) ; FOR RSUBRS + MOVSI A,TATOM + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT ;PRINT FUNCTION NAME + SUB TP,[2,,2] ; POP CHANNEL OFF STACK + JRST PNEXT + +PPVP: MOVE B,(TP) ; PROCESS TO B + MOVSI A,TFIX + JUMPE B,.+3 + MOVE A,PROCID(B) + MOVE B,PROCID+1(B) ;GET ID + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT + SUB TP,[2,,2] ; POP CHANNEL OFF STACK + JRST PNEXT + +; HERE TO PRINT LOCATIVES + +LOCPT1: HRRZ A,-1(TP) + JUMPN A,PUNK +LOCPT: MOVEI B,-1(TP) ; VALIDITY CHECK + PUSHJ P,CHLOCI + HRRZ A,-1(TP) + JUMPE A,GLOCPT + MOVE B,(TP) + MOVE A,(B) + MOVE B,1(B) + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT + SUB TP,[2,,2] ; POP CHANNEL OFF STACK + JRST PNEXT + +GLOCPT: MOVEI A,2 + MOVE B,-2(TP) ; GET CHANNEL + PUSHJ P,RETIF + MOVEI A,"% + PUSHJ P,PITYO + MOVEI A,"< + PUSHJ P,PITYO + MOVSI A,TATOM + MOVE B,MQUOTE GLOC + PUSH TP,-3(TP) + PUSH TP,-3(TP) + PUSHJ P,IPRINT + SUB TP,[2,,2] + PUSHJ P,SPACEQ + MOVE B,(TP) + MOVSI A,TATOM + MOVE B,-1(B) + PUSH TP,-3(TP) + PUSH TP,-3(TP) + PUSHJ P,IPRINT + SUB TP,[2,,2] + PUSHJ P,SPACEQ + MOVSI A,TATOM + MOVE B,MQUOTE T + PUSH TP,-3(TP) + PUSH TP,-3(TP) + PUSHJ P,IPRINT + SUB TP,[2,,2] + MOVEI A,"> + PUSHJ P,PRETIF + JRST PNEXT + + ;PRINT UNIFORM VECTORS. +; +PUVEC: MOVE B,-2(TP) ; GET CHANNEL INTO B + MOVEI A,2 ; ROOM FOR ! AND SQ BRACK? + PUSHJ P,RETIF + MOVEI A,"! ;TYPE AN ! AND OPEN SQUARE BRACKET + PUSHJ P,PITYO + MOVEI A,"[ + PUSHJ P,PITYO + + MOVE C,(TP) ;GET AOBJN POINTER TO VECTOR + TLNN C,777777 ;SKIP ONLY IF COUNT IS NOT ZERO + JRST NULVEC ;ELSE, VECTOR IS EMPTY + + HLRE A,C ;GET NEG COUNT + MOVEI D,(C) ;COPY POINTER + SUB D,A ;POINT TO DOPE WORD + HLLZ A,(D) ;GET TYPE + PUSH P,A ;AND SAVE IT + +PUVE02: MOVE A,(P) ;PUT TYPE CODE IN REG A + MOVE B,(C) ;PUT DATUM INTO REG B + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT ;TYPE IT + SUB TP,[2,,2] ; POP CHANNEL OF STACK + MOVE C,(TP) ;GET AOBJN POINTER + AOBJP C,NULVE1 ;JUMP IF COUNT IS ZERO + MOVEM C,(TP) ;PUT POINTER BACK ONTO STACK + + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,SPACEQ + JRST PUVE02 ;LOOP THROUGH VECTOR + +NULVE1: SUB P,[1,,1] ;REMOVE STACK CRAP +NULVEC: MOVE B,-2(TP) ; GET CHANNEL INTO B + MOVEI A,"! ;TYPE CLOSE BRACKET + PUSHJ P,PRETIF + MOVEI A,"] + PUSHJ P,PRETIF + JRST PNEXT + + ;PRINT A GENERALIZED VECTOR +; +PVEC: MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,RETIF1 ;NEW LINE IF NO ROOM FOR [ + MOVEI A,"[ ;PRINT A LEFT-BRACKET + PUSHJ P,PITYO + + MOVE C,(TP) ;GET AOBJN POINTER TO VECTOR + TLNN C,777777 ;SKIP IF POINTER-COUNT IS NON-ZERO + JRST PVCEND ;ELSE, FINISHED WITH VECTOR +PVCR01: MOVE A,(C) ;PUT FIRST WORD OF NEXT ELEMENT INTO REG A + MOVE B,1(C) ;SECOND WORD OF LIST INTO REG B + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT ;PRINT THAT ELEMENT + SUB TP,[2,,2] ; POP CHANNEL OFF STACK + + MOVE C,(TP) ;GET AOBJN POINTER FROM TP-STACK + AOBJP C,PVCEND ;POSITIVE HERE SERIOUS ERROR! (THOUGH NOT PDL) + AOBJN C,.+2 ;SKIP AND CONTINUE LOOP IF COUNT NOT ZERO + JRST PVCEND ;ELSE, FINISHED WITH VECTOR + MOVEM C,(TP) ;PUT INCREMENTED POINTER BACK ON TP-STACK + + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,SPACEQ + JRST PVCR01 ;CONTINUE LOOPING THROUGH OBJECTS ON VECTOR + +PVCEND: MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,RETIF1 ;NEW LINE IF NO ROOM FOR ] + MOVEI A,"] ;PRINT A RIGHT-BRACKET + PUSHJ P,PITYO + JRST PNEXT + + ;PRINT A LIST. +; +PLIST: MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,RETIF1 ;NEW LINE IF NO SPACE LEFT FOR "(" + MOVEI A,"( ;TYPE AN OPEN PAREN + PUSHJ P,PITYO + PUSHJ P,LSTPRT ;PRINT THE INSIDES + MOVE B,-2(TP) ; RESTORE CHANNEL TO B + PUSHJ P,RETIF1 ;NEW LINE IF NO ROOM FOR THE CLOSE PAREN + MOVEI A,") ;TYPE A CLOSE PAREN + PUSHJ P,PITYO + JRST PNEXT + +PSEG: TLOA FLAGS,SEGBIT ;PRINT A SEGMENT (& SKIP) + +PFORM: TLZ FLAGS,SEGBIT ;PRINT AN ELEMENT + +PLMNT3: MOVE C,(TP) + JUMPE C,PLMNT1 ;IF THE CALL IS EMPTY GO AWAY + MOVE B,1(C) + MOVEI D,0 + CAMN B,MQUOTE LVAL + MOVEI D,". + CAMN B,MQUOTE GVAL + MOVEI D,", + CAMN B,MQUOTE QUOTE + MOVEI D,"' + JUMPE D,PLMNT1 ;NEITHER, LEAVE + +;ITS A SPECIAL HACK + HRRZ C,(C) + JUMPE C,PLMNT1 ;NIL BODY? + +;ITS VALUE OF AN ATOM + HLLZ A,(C) + MOVE B,1(C) + HRRZ C,(C) + JUMPN C,PLMNT1 ;IF TERE ARE EXTRA ARGS GO AWAY + + PUSH P,D ;PUSH THE CHAR + PUSH TP,A + PUSH TP,B + TLNN FLAGS,SEGBIT ;SKIP (CONTINUE) IF THIS IS A SEGMENT + JRST PLMNT4 ;ELSE DON'T PRINT THE "." + +;ITS A SEGMENT CALL + MOVE B,-4(TP) ; GET CHANNEL INTO B + MOVEI A,2 ; ROOM FOR ! AND . OR , + PUSHJ P,RETIF + MOVEI A,"! + PUSHJ P,PITYO + +PLMNT4: MOVE B,-4(TP) ; GET CHANNEL INTO B + PUSHJ P,RETIF1 + POP P,A ;RESTORE CHAR + PUSHJ P,PITYO + POP TP,B + POP TP,A + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT + SUB TP,[2,,2] ; POP CHANNEL OFF STACK + JRST PNEXT + + +PLMNT1: TLNN FLAGS,SEGBIT ;SKIP IF THIS IS A SEGMENT + JRST PLMNT5 ;ELSE DON'T TYPE THE "!" + +;ITS A SEGMENT CALL + MOVE B,-2(TP) ; GET CHANNEL INTO B + MOVEI A,2 ; ROOM FOR ! AND < + PUSHJ P,RETIF + MOVEI A,"! + PUSHJ P,PITYO + +PLMNT5: MOVE B,-2(TP) ; GET CHANNEL FOR B + PUSHJ P,RETIF1 + MOVEI A,"< + PUSHJ P,PITYO + PUSHJ P,LSTPRT + MOVEI A,"! + MOVE B,-2(TP) ; GET CHANNEL INTO B + TLNE FLAGS,SEGBIT ;SKIP IF NOT SEGEMNT + PUSHJ P,PRETIF + MOVEI A,"> + PUSHJ P,PRETIF + JRST PNEXT + + + +LSTPRT: SKIPN C,(TP) + POPJ P, + HLLZ A,(C) ;GET NEXT ELEMENT + MOVE B,1(C) + HRRZ C,(C) ;CHOP THE LIST + JUMPN C,PLIST1 + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P,IPRINT ;PRINT THE LAST ELEMENT + SUB TP,[2,,2] ; POP CHANNEL OFF STACK + POPJ P, + +PLIST1: MOVEM C,(TP) + PUSH TP,-3(TP) ; GET CHANNEL FOR IPRINT + PUSH TP,-3(TP) + PUSHJ P, IPRINT ;PRINT THE NEXT ELEMENT + SUB TP,[2,,2] ; POP CHANNEL OFF STACK + MOVE B,-2(TP) ; GET CHANNEL INTO B + PUSHJ P,SPACEQ + JRST LSTPRT ;REPEAT + +PNEXT: POP P,FLAGS ;RESTORE PREVIOUS FLAG BITS + SUB TP,[2,,2] ;REMOVE INPUT ELEMENT FROM TP-STACK + POP P,C ;RESTORE REG C + POPJ P, + +OPENIT: PUSH P,E + PUSH P,FLAGS + PUSHJ P,OPNCHN + POP P,FLAGS + POP P,E + JUMPGE B,FNFFL ;ERROR IF IT CANNOT BE OPENED + POPJ P, + + +END + +TITLE GETPUT ASSOCIATION FUNCTIONS FOR MUDDLE + +RELOCATABLE + +.INSRT MUDDLE > + +; COMPONENTS IN AN ASSOCIATION BLOCK + +ITEM==0 ;ITEM TO WHICH INDUCATOR APPLIES +VAL==2 ;VALUE +INDIC==4 ;INDICATOR +NODPNT==6 ;IF NON ZERO POINTS TO CHAIN +PNTRS==7 ;POINTERS NEXT (RH) AND PREV (LH) + +ASOLNT==8 ;NUMBER OF WORDS IN AN ASSOCIATION BLOCK + +.GLOBAL ASOVEC ;POINTER TO HASH VECTOR IN TV +.GLOBAL ASOLNT,ITEM,INDIC,VAL,NODPNT,NODES,IPUTP,IGETP,PUT,IFALSE +.GLOBAL DUMNOD,IGETLO,IBLOCK,MONCH,RMONCH,IPUT,IGETL,IREMAS,IGET +.GLOBAL NWORDT,CIGETP,CIGTPR,CIPUTP,CIREMA,MPOPJ + +MFUNCTION GETP,SUBR,[GETPROP] + + ENTRY + +IGETP: PUSHJ P,GETLI + JRST FINIS ; NO SKIP, LOSE + MOVSI A,TLOCN + HLLZ 0,VAL(B) + PUSHJ P,RMONCH ; CHECK MONITOR + MOVE A,VAL(B) ;ELSE RETURN VALUE + MOVE B,VAL+1(B) +CFINIS: JRST FINIS + +; FUNCTION TO RETURN LOCATIVE TO ASSOC + +MFUNCTION GETPL,SUBR + + ENTRY + +IGETLO: PUSHJ P,GETLI + JRST FINIS + MOVSI A,TLOCN + JRST FINIS + +GETLI: PUSHJ P,2OR3 ; GET ARGS + PUSHJ P,IGETL ;SEE IF ASSOCIATION EXISTS + SKIPE B + AOS (P) ; WIN RETURN + CAMGE AB,[-4,,0] ; ANY ERROR THING + JUMPE B,CHFIN ;IF 0, NONE EXISTS + POPJ P, + +CHFIN: PUSH TP,4(AB) + PUSH TP,5(AB) + MCALL 1,EVAL + POPJ P, + +; COMPILER CALLS TO SOME OF THESE + +CIGETP: SUBM M,(P) ; FIX RET ADDR + PUSHJ P,IGETL ; GO TO INTERNAL + JUMPE B,MPOPJ + MOVSI A,TLOCN +MPOPJ1: SOS (P) ; WINNER (SOS BECAUSE OF SUBM M,(P)) +MPOPJ: SUBM M,(P) + POPJ P, + +CIGTPR: SUBM M,(P) + PUSHJ P,IGETL + JUMPE B,MPOPJ + MOVE A,VAL(B) ; GET VAL TYPE + MOVE B,VAL+1(B) + JRST MPOPJ1 + +CIPUTP: SUBM M,(P) + PUSH TP,-1(TP) ; SAVE VAL + PUSH TP,-1(TP) + PUSHJ P,IPUT ; DO IT + POP TP,B + POP TP,A + JRST MPOPJ + +CIREMA: SUBM M,(P) + PUSHJ P,IREMAS ; FLUSH IT + JRST MPOPJ + +; CHECK PUT/GET PUTPROP AND GETPROP ARGS + +2OR3: HLRE 0,AB + ASH 0,-1 ; TO -# OF ARGS + ADDI 0,2 ; AT LEAST 2 + JUMPG 0,TFA ; 1 OR LESS, LOSE + AOJL 0,TMA ; 4 OR MORE, LOSE + MOVE A,(AB) ; GET ARGS INTO ACS + MOVE B,1(AB) + MOVE C,2(AB) + MOVE D,3(AB) + POPJ P, + +; INTERNAL GET + +IGET: PUSHJ P,IGETL ; GET LOCATIVE + JUMPE B,CPOPJ + MOVE A,VAL(B) + MOVE B,VAL+1(B) + POPJ P, + +; FUNCTION TO MAKE AN ASSOCIATION + +MFUNCTION PUTP,SUBR,[PUTPROP] + + ENTRY + +IPUTP: PUSHJ P,2OR3 ; GET ARGS + JUMPN 0,REMAS ; REMOVE AN ASSOCIATION + PUSH TP,4(AB) ; SAVE NEW VAL + PUSH TP,5(AB) + PUSHJ P,IPUT ; DO IT + MOVE A,(AB) ; RETURN NEW VAL + MOVE B,1(AB) + JRST FINIS + +REMAS: PUSHJ P,IREMAS + JRST FINIS + +IPUT: SKIPN DUMNOD+1(TVP) ; NEW DUMMY NEDDED? + PUSHJ P,DUMMAK ; YES, GO MAKE ONE +IPUT1: PUSHJ P,IGETI ;SEE IF THIS ONE EXISTS + + JUMPE B,NEWASO ;JUMP IF NEED NEW ASSOCIATION BLOCK +CLOBV: MOVE C,-5(TP) ; RET NEW VAL + MOVE D,-4(TP) + SUB TP,[6,,6] + HLLZ 0,VAL(B) + MOVSI A,TLOCN + PUSHJ P,MONCH ; MONITOR CHECK + MOVEM C,VAL(B) ;STORE IT + MOVEM D,VAL+1(B) +CPOPJ: POPJ P, + +; HERE TO CREATE A NEW ASSOCIATION + +NEWASO: MOVE B,DUMNOD+1(TVP) ; GET BALNK ASSOCIATION + SETZM DUMNOD+1(TVP) ; CAUSE NEW ONE NEXT TIME + + +;NOW SPLICE IN CHAIN + + JUMPE D,PUT1 ;NO OTHERS EXISTED IN THIS BUCKET + HRLZM C,PNTRS(B) ;CLOBBER PREV POINTER + HRRM B,PNTRS(C) ;AND NEXT POINTER + JRST .+2 + +PUT1: HRRZM B,(C) ;STORE INTO VECTOR + HRRZ C,NODES+1(TVP) + HRLM C,NODPNT(B) + MOVE D,NODPNT(C) + HRRZM B,NODPNT(C) + HRRM D,NODPNT(B) + HRLM B,NODPNT(D) + MOVEI C,-3(TP) ;COPY ARG POINTER + MOVSI A,-4 ;AND COPY POINTER + +PUT2: MOVE D,(C) ;START COPYING + MOVEM D,@CLOBTB(A) + ADDI C,1 + AOBJN A,PUT2 ;NOTE *** DEPENDS ON ORDER IN VECTOR *** + + JRST CLOBV + +;HERE TO REMOVE AN ASSOCIATION + +IREMAS: PUSHJ P,IGETL ;LOOK IT UP + JUMPE B,CPOPJ ;NEVER EXISTED, IGNORE + HRRZ A,PNTRS(B) ;NEXT POINTER + HLRZ E,PNTRS(B) ;PREV POINTER + SKIPE A ;DOES A NEXT EXIST? + HRLM E,PNTRS(A) ;YES CLOBBER ITS PREV POINTER + SKIPN D ;SKIP IF NOT FIRST IN BUCKET + MOVEM A,(C) ;FIRST STORE NEW ONE + SKIPE D ;OTHERWISE + HRRM A,PNTRS(E) ;PATCH NEXT POINTER IN PREVIOUS + HRRZ A,NODPNT(B) ;SEE IF MUST UNSPLICE NODE + HLRZ E,NODPNT(B) + SKIPE A + HRLM E,NODPNT(A) ;SPLICE + JUMPE E,PUT4 ;FLUSH IF NO PREV POINTER + HRRZ C,NODPNT(E) ;GET PREV'S NEXT POINTER + CAIE C,(B) ;DOES IT POINT TO THIS NODE + .VALUE [ASCIZ /:FATAL PUT LOSSAGE/] + HRRM A,NODPNT(E) ;YES, SPLICE +PUT4: MOVE A,VAL(B) ;RETURN VALUE + SETZM PNTRS(B) + MOVE B,VAL+1(B) + POPJ P, + + +;INTERNAL GET FUNCTION CALLED BY PUT AND GET +; A AND B ARE THE ITEM +;C AND D ARE THE INDICATOR + +IGETL: PUSHJ P,IGETI + SUB TP,[4,,4] ; FLUSH CRUFT LEFT BY IGETI + POPJ P, + +IGETI: PUSHJ P,LHCLR + EXCH A,C + PUSHJ P,LHCLR + EXCH C,A + PUSH TP,A + PUSH TP,B + PUSH TP,C ;SAVE C AND D + PUSH TP,D + XOR A,B ; BUILD HASH + XOR A,C + XOR A,D + TLZ A,400000 ; FORCE POS A + HLRZ B,ASOVEC+1(TVP) ;GET LENGTH OF HASH VECTOR + MOVNS B + IDIVI A,(B) ;RELATIVE BUCKET NOW IN B + HRLI B,(B) ;IN CASE GC OCCURS + ADD B,ASOVEC+1(TVP) ;POINT TO BUCKET + MOVEI D,0 ;SET FIRST SWITCH + SKIPN A,(B) ;GET CONTENTS OF BUCKET (DONT SKIP IF EMPTY) + JRST GFALSE + + MOVSI 0,TASOC ;FOR INTGOS, MAKE A TASOC + HLLZM 0,ASTO(PVP) + +IGET1: GETYPF 0,ITEM(A) ;GET ITEMS TYPE + + MOVE E,ITEM+1(A) + CAMN 0,-3(TP) ;COMPARE TYPES + CAME E,-2(TP) ;AND VALUES + JRST NXTASO ;LOSER + GETYPF 0,INDIC(A) ;MOW TRY INDICATORS + MOVE E,INDIC+1(A) + CAMN 0,-1(TP) + CAME E,(TP) + JRST NXTASO + + SKIPN D ;IF 1ST THEN + MOVE C,B ;RETURN POINTER IN C + MOVE B,A ;FOUND, RETURN ASSOCIATION + MOVSI A,TASOC +IGRET: SETZM ASTO(PVP) + POPJ P, + +NXTASO: MOVEI D,1 ;SET SWITCH + MOVE C,A ;CYCLE + HRRZ A,PNTRS(A) ;STEP + JUMPN A,IGET1 + + MOVSI A,TFALSE + MOVEI B,0 + JRST IGRET + +GFALSE: MOVE C,B ;PRESERVE VECTOR POINTER + MOVSI A,TFALSE + SETZB B,D + JRST IGRET + +; FUNCTION TO DO A PUT AND ALSO ADD TO THE NODE FOR THIS GOODIE + +REPEAT 0,[ +MFUNCTION PUTN,SUBR + + ENTRY + + CAML AB,[-4,,0] ;WAS THIS A REMOVAL + JRST PUT + + PUSHJ P,IPUT ;DO THE PUT + SKIPE NODPNT(C) ;NODE CHAIN EXISTS? + JRST FINIS + + PUSH TP,$TASOC ;NO, START TO BUILD + PUSH TP,C + SKIPN DUMNOD+1(TVP) ; FIX UP DUMMY? + PUSHJ P,DUMMAK +CHPT: MOVE C,$TCHSTR + MOVE D,CHQUOTE NODE + PUSHJ P,IGETL + JUMPE B,MAKNOD ;NOT FOUND, LOSE +NODSPL: MOVE C,(TP) ;HERE TO SPLICE IN NEW NODE + MOVE D,VAL+1(B) ;GET POINTER TO NODE STRING + HRRM D,NODPNT(C) ;CLOBBER + HRLM B,NODPNT(C) + SKIPE D ;SPLICE ONLY IF THERE IS SOMETHING THERE + HRLM C,NODPNT(D) + MOVEM C,VAL+1(B) ;COMPLETE NODE CHAIN + MOVE A,2(AB) ;RETURN VALUE + MOVE B,3(AB) + JRST FINIS + +MAKNOD: PUSHJ P,NEWASO ;GENERATE THE NEW ASSOCIATION + MOVE A,@CHPT ;GET UNIQUE STRING + MOVEM A,INDIC(C) ;CLOBBER IN INDIC + MOVE A,@CHPT+1 + MOVEM A,INDIC+1(C) + MOVE B,C ;POINTER TO B + HRRZ C,NODES+1(TVP) ;GET POINTER TO CHAIN OF NODES + HRRZ D,VAL+1(C) ;SKIP DUMMY NODE + HRRM B,VAL+1(C) ;CLOBBER INTO CHAIN + HRRM D,NODPNT(B) + SKIPE D ;SPLICE IF ONLY SOMETHING THERE + HRLM B,NODPNT(D) + HRLM C,NODPNT(B) + MOVSI A,TASOC ;SET TYPE OF VAL TO ASSOCIATION + MOVEM A,VAL(B) + SETZM VAL+1(B) + JRST NODSPL ;GO SPLICE ITEM ONTO NODE +] + +DUMMAK: PUSH TP,A + PUSH TP,B + PUSH TP,C + PUSH TP,D + MOVEI A,ASOLNT + PUSHJ P,IBLOCK + MOVSI A,400000+SASOC+.VECT. + MOVEM A,ASOLNT(B) ;SET SPECIAL TYPE + MOVEM B,DUMNOD+1(TVP) + POP TP,D + POP TP,C + POP TP,B + POP TP,A + POPJ P, + +CLOBTB: ITEM(B) + ITEM+1(B) + INDIC(B) + INDIC+1(B) + VAL(B) + VAL+1(B) + +MFUNCTION ASSOCIATIONS,SUBR + + ENTRY 0 + MOVE B,NODES+1(TVP) +ASSOC1: MOVSI A,TASOC ; SET TYPE + HRRZ B,NODPNT(B) ; POINT TO 1ST REAL NODE + JUMPE B,IFALSE + JRST FINIS + +; RETURN NEXT ASSOCIATION IN CHAIN OR FALSE + +MFUNCTION NEXT,SUBR + + ENTRY 1 + + GETYP 0,(AB) ; BETTER BE ASSOC + CAIE 0,TASOC + JRST WTYP1 ; LOSE + MOVE B,1(AB) ; GET ARG + JRST ASSOC1 + +; GET ITEM/INDICATOR/VALUE CELLS + +MFUNCTION %ITEM,SUBR,ITEM + + MOVEI B,ITEM ; OFFSET + JRST GETIT + +MFUNCTION INDICATOR,SUBR + + MOVEI B,INDIC + JRST GETIT + +MFUNCTION AVALUE,SUBR + + MOVEI B,VAL +GETIT: ENTRY 1 + GETYP 0,(AB) ; BETTER BE ASSOC + CAIE 0,TASOC + JRST WTYP1 + ADD B,1(AB) ; GET ARG + MOVE A,(B) + MOVE B,1(B) + JRST FINIS + +LHCLR: PUSH P,A + GETYP A,A + PUSHJ P,NWORDT ; DEFERRED ? + SOJE A,LHCLR2 + POP P,A +LHCLR1: TLZ A,TYPMSK#<-1> + POPJ P, +LHCLR2: POP P,A + HLLZS A + JRST LHCLR1 + +END + +TITLE READC TELETYPE DEVICE HANDLER FOR MUDDLE + +RELOCATABLE + +.INSRT MUDDLE > + +SYSQ + +IF1,[ +IFE ITS,.INSRT MUDSYS;STENEX > +] + +.GLOBAL BUFRIN,CHRCNT,SYSCHR,ECHO,BYTPTR,ERASCH,KILLCH,BRKCH,AGC,CHRWRD,W1CHAR,GWB +.GLOBAL IOIN2,READC,WRONGC,BRFCHR,ESCAP,TTYOPE,MTYI,MTYO,NOTTY,TTYOP2,IBLOCK +.GLOBAL RRESET,TTICHN,TTOCHN,CHANNO,STATUS,BRFCH2,TTYBLK,TTYUNB,WAITNS +.GLOBAL EXBUFR,INCHAR,BYTDOP,BUFSTR,LSTCH,CHNCNT,DIRECT,IOINS,IBLOCK,INCONS +.GLOBAL BADCHN,WRONGD,CHNLOS,MODE1,MODE2,GMTYO,IDVAL,GETCHR,PAGLN,LINLN +.GLOBAL RDEVIC +TTYOUT==1 +TTYIN==2 + +; FLAGS CONCERNING TTY CHANNEL STATE + +N.ECHO==1 ; NO INPUT ECHO +N.CNTL==2 ; NO RUBOUT ^L ^D ECHO +N.IMED==4 ; ALL CHARS WAKE UP +N.IME1==10 ; SOON WILL BE N.IMED + + +; OPEN BLOCK MODE BITS +OUT==1 +IMAGEM==4 +ASCIIM==0 +UNIT==0 + + +; READC IS CALLED BY PUSHJ P,READC +; B POINTS TO A TTY FLAVOR CHANNEL +; ONE CHARACTER IS RETURNED IN A +; BECOMES INTERRUPTABLE IF NO CHARACTERS EXISTS + +; HERE TO ASK SYSTEM FOR SOME CHARACTERS + +INCHAR: IRP A,,[0,C,D,E] ;SAVE ACS + PUSH P,A + TERMIN + MOVE E,BUFRIN(B) ; GET AUX BUFFER + MOVE D,BYTPTR(E) + HLRE 0,E ;FIND END OF BUFFER + SUBM E,0 + ANDI 0,-1 ;ISOLATE RH + MOVE C,SYSCHR(E) ; GET FLAGS + +INCHR1: TRNE C,N.IMED+N.CNTL ; SKIP IF NOT IMMEDIATE + JRST DONE + TLZE D,40 ; SKIP IF NOT ESCAPED + JRST INCHR2 ; ESCAPED + CAMN A,ESCAP(E) ; IF ESCAPE + TLO D,40 ; REMEMBER + CAMN A,BRFCH2(E) + JRST BRF + CAMN A,BRFCHR(E) ;BUFFER PRINT CHAR + JRST CLEARQ ;MAYBE CLEAR SCREEN + CAMN A,BRKCH(E) ;IS THIS A BREAK? + JRST DONE ;YES, DONE + CAMN A,ERASCH(E) ;ARE IS IT ERASE? + JRST ERASE ;YES, GO PROCESS + CAMN A,KILLCH(E) ;OR KILL + JRST KILL + +INCHR2: PUSHJ P,PUTCHR ;PUT ACHAR IN BUFFER +INCHR3: MOVEM D,BYTPTR(E) + JRST DONE1 + +DONE: SKIPL A ; IF JUST BUFFER FORCE, SKIP + PUSHJ P,PUTCHR ; STORE CHAR + MOVEI A,N.IMED ; TURN OFF IMEDIACY + ANDCAM A,SYSCHR(E) + MOVEM D,BYTPTR(E) + PUSH TP,$TCHAN ; SAVE CHANNEL + PUSH TP,B + MOVE A,CHRCNT(E) ; GET # OF CHARS + SETZM CHRCNT(E) + PUSH P,A + ADDI A,4 ; ROUND UP + IDIVI A,5 ; AND DOWN + PUSHJ P,IBLOCK ; GET CORE + HLRE A,B ; FIND D.W. + SUBM B,A + MOVSI 0,TCHRS+.VECT. ; GET TYPE + MOVEM 0,(A) ; AND STORE + MOVEI D,(B) ; COPY PNTR + POP P,C ; CHAR COUNT + HRLI D,440700 + HRLI C,TCHSTR + PUSH TP,C + PUSH TP,D + PUSHJ P,INCONS ; CONS IT ON + MOVE C,-2(TP) ; GET CHAN BACK + MOVEI D,EXBUFR(C) ; POINT TO BUFFER LIST + HRRZ 0,(D) ; LAST? + JUMPE 0,.+3 + MOVE D,0 + JRST .-3 ; GO UNTIL END + HRRM B,(D) ; SPLICE + +; HERE TO BLT IN BUFFER + + MOVE D,BUFRIN(C) ; POINT TO COMPLETED BUFFER + HRRZ C,(TP) ; START OF NEW STRING + HRLI C,BYTPTR+1(D) ; 1ST WORD OF CHARS + MOVE E,[010700,,BYTPTR(E)] + EXCH E,BYTPTR(D) ; END OF STRING + MOVEI E,-BYTPTR(E) + ADD E,(TP) ; ADD TO START + BLT C,-1(E) + MOVE B,-2(TP) ; CHANNEL BACK + SUB TP,[4,,4] ; FLUSH JUNK + PUSHJ P,TTYUNB ; UNBLOCK THIS TTY +DONE1: IRP A,,[E,D,C,0] + POP P,A + TERMIN + POPJ P, + + +ERASE: SKIPN CHRCNT(E) ;ANYTHING IN BUFFER? + JRST BARFCR ;NO, MAYBE TYPE CR + + SOS CHRCNT(E) ;DELETE FROM COUNT + LDB A,D ;RE-GOBBLE LAST CHAR +IFN ITS,[ + LDB C,[600,,STATUS(B)] ; CHECK FOR IMLAC + CAIE C,2 ; SKIP IF IT IS +] + JRST TYPCHR + SKIPN ECHO(E) ; SKIP IF ECHOABLE + JRST NECHO + PUSHJ P,CHRTYP ; FOUND OUT IMALC BEHAVIOR + SKIPGE C,FIXIM2(C) + JRST (C) +NOTFUN: PUSHJ P,DELCHR + SOJG C,.-1 + +NECHO: ADD D,[70000,,0] ;DECREMENT BYTE POINTER + JUMPGE D,INCHR3 ;AND GO ON, UNLESS BYTE POINTER LOST + SUB D,[430000,,1] ;FIX UP BYTE POINTER + JRST INCHR3 + +LFKILL: PUSHJ P,LNSTRV + JRST NECHO + +BSKILL: PUSHJ P,GETPOS ; CURRENT POSITION TO A + PUSHJ P,SETPOS ; POSITION IMLAC CURSOR + MOVEI A,20 ; ^P + XCT ECHO(E) + MOVEI A,"L ; L , DELETE TO END OF LINE + XCT ECHO(E) + JRST NECHO + +TBKILL: PUSHJ P,GETPOS + ANDI A,7 + SUBI A,10 ; A -NUMBER OF DELS TO DO + PUSH P,A + PUSHJ P,DELCHR + AOSE (P) + JRST .-2 + + SUB P,[1,,1] + JRST NECHO +TYPCHR: +IFE ITS,[ + PUSH P,A ; USE TENEX SLASH RUBOUT + MOVEI A,"\ + SKIPE C,ECHO(E) + XCT C + POP P,A +] + SKIPE C,ECHO(E) + XCT C + JRST NECHO + +; ROUTINE TO DEL CHAR ON IMLAC + +DELCHR: MOVEI A,20 + XCT ECHO(E) + MOVEI A,"X + XCT ECHO(E) + POPJ P, + +; HERE FOR SPECIAL IMLAC HACKS + +FOURQ: PUSH P,CNOTFU +FOURQ2: MOVEI C,2 ; FOR ^Z AND ^_ + CAMN B,TTICHN+1(TVP) ; SKIP IF NOT CONSOLE TTY + MOVEI C,4 +CNOTFU: POPJ P,NOTFUN + +CNECHO: JRST NECHO + +LNSTRV: MOVEI A,20 ; ^P + XCT ECHO(E) + MOVEI A,"U + XCT ECHO(E) + POPJ P, + +; HERE IF KILLING A C.R., RE-POSITION CURSOR + +CRKILL: PUSHJ P,GETPOS ; COMPUTE LINE POS + PUSHJ P,SETPOS + JRST NECHO + +SETPOS: PUSH P,A ; SAVE POS + MOVEI A,20 + XCT ECHO(E) + MOVEI A,"H + XCT ECHO(E) + POP P,A + XCT ECHO(E) ; HORIZ POSIT AT END OF LINE + POPJ P,0 + +GETPOS: PUSH P,0 + MOVEI 0,10 ; MINIMUM CURSOR POS + PUSH P,[010700,,BYTPTR(E)] ; POINT TO BUFFER + PUSH P,CHRCNT(E) ; NUMBER THEREOF + +GETPO1: SOSGE (P) ; COUNT DOWN + JRST GETPO2 + ILDB A,-1(P) ; CHAR FROM BUFFER + CAIN A,15 ; SKIP IF NOT CR + MOVEI 0,10 ; C.R., RESET COUNT + PUSHJ P,CHRTYP ; GET TYPE + XCT FIXIM3(C) ; GET FIXED COUNT + ADD 0,C + JRST GETPO1 + +GETPO2: MOVE A,0 ; RET COUNT + MOVE 0,-2(P) ; RESTORE AC 0 + SUB P,[3,,3] + POPJ P, + +CHRTYP: MOVEI C,0 ; NUMBER OF FLUSHEES + CAILE A,37 ; SKIP IF CONTROL CHAR + POPJ P, + PUSH TP,$TCHAN + PUSH TP,B ; SAVE CHAN + IDIVI A,12. ; FIND SPECIAL HACKS + MOVE A,FIXIML(A) ; GET CONT WORD + IMULI B,3 + ROTC A,3(B) ; GET CODE IN B + ANDI B,7 + MOVEI C,(B) + MOVE B,(TP) ; RESTORE CHAN + SUB TP,[2,,2] + POPJ P, + +FIXIM2: 1 + 2 + SETZ FOURQ + SETZ CRKILL + SETZ LFKILL + SETZ BSKILL + SETZ TBKILL + +FIXIM3: MOVEI C,1 + MOVEI C,2 + PUSHJ P,FOURQ2 + MOVEI C,0 + MOVEI C,0 + MOVNI C,1 + PUSHJ P,CNTTAB + +CNTTAB: ANDCMI 0,7 ; GET COUNT INCUDING TAB HACK + ADDI 0,10 + MOVEI C,0 + POPJ P, + +FIXIML: 111111,,115641 ; CNTL @ABCDE,,FGHIJK + 131111,,111111 ; LMNOPQ,,RSTUVW + 112011,,120000 ; XYZ LBRAK \ RBRAK,,^ _ + +; HERE TO KILL THE WHOLE BUFFER + +KILL: CLEARM CHRCNT(E) ;NONE LEFT NOW + MOVE D,[010700,,BYTPTR(E)] ;RESET POINTER + +BARFCR: +IFN ITS,[ + MOVE A,ERASCH(E) ;GET THE ERASE CHAR + CAIN A,177 ;IS IT RUBOUT? +] + PUSHJ P,CRLF1 ; PRINT CR-LF + JRST INCHR3 + +CLEARQ: +IFN ITS,[ + MOVE A,STATUS(B) ;CHECK CONSOLE KIND + ANDI A,77 + CAIN A,2 ;DATAPOINT? + PUSHJ P,CLR ;YES, CLEAR SCREEN +] + +BRF: MOVE C,[010700,,BYTPTR(E)] ;POINT TO START OF BUFFER + SKIPN ECHO(E) ;ANY ECHO INS? + JRST NECHO + + PUSHJ P,CRLF2 + PUSH P,CHRCNT(E) + + SOSGE (P) + JRST DECHO + ILDB A,C ;GOBBLE CHAR + XCT ECHO(E) ;ECHO IT + JRST .-4 ;DO FOR ENTIRE BUFFER + +DECHO: SUB P,[1,,1] + JRST INCHR3 + +CLR: SKIPN C,ECHO(E) ;ONLY IF INS EXISTS + POPJ P, + MOVEI A,20 ;ERASE SCREEN + XCT C + MOVEI A,103 + XCT C + POPJ P, + +PUTCHR: AOS CHRCNT(E) ;COUNT THIS CHARACTER + IBP D ;BUMP BYTE POINTER + CAIG 0,@D ;DONT SKIP IF BUFFER FULL + PUSHJ P,BUFULL ;GROW BUFFER +IFE ITS,[ + CAIN A,37 ; CHANGE EOL TO CRLF + MOVEI A,15 +] + DPB A,D ;CLOBBER BYTE POINTER IN + MOVE C,SYSCHR(E) ; FLAGS + TRNN C,N.IMED+N.CNTL + CAIE A,15 ; IF CR INPUT, FOLLOW WITH LF + POPJ P, + MOVEI A,12 ; GET LF + JRST PUTCHR + +; BUFFER FULL, GROW THE BUFFER + +BUFULL: PUSH TP,$TCHAN ;SAVE B + PUSH TP,B + PUSH P,A ; SAVE CURRENT CHAR + HLRE A,BUFRIN(B) + MOVNS A + ADDI A,100 ; MAKE ONE LONGER + PUSHJ P,IBLOCK ; GET IT + MOVE A,(TP) ;RESTORE CHANNEL POINTER + SUB TP,[2,,2] ;AND REMOVE CRUFT + MOVE E,BUFRIN(A) ;GET AUX BUFFER POINTER + MOVEM B,BUFRIN(A) + HLRE 0,E ;RECOMPUTE 0 + MOVSI E,(E) + HRRI E,(B) ; POINT TO DEST + SUB B,0 + BLT E,(B) + MOVEI 0,100-2(B) + MOVE B,A + POP P,A + POPJ P, + +; ROUTINE TO CRLF ON ANY TTY + +CRLF1: SKIPN ECHO(E) + POPJ P, ; NO ECHO INS +CRLF2: MOVEI A,15 + XCT ECHO(E) + MOVEI A,12 + XCT ECHO(E) + POPJ P, + +; SUBROUTINE TO FLUSH BUFFER + +RRESET: SETZM LSTCH(B) ; CLOBBER RE-USE CHAR + MOVE E,BUFRIN(B) ;GET AUX BUFFER + SETZM CHRCNT(E) + MOVEI D,N.IMED+N.IME1 + ANDCAM D,SYSCHR(E) + MOVE D,[010700,,BYTPTR(E)] ;RESET BYTE POINTER + MOVEM D,BYTPTR(E) + MOVE D,CHANNO(B) ;GOBBLE CHANNEL + SETZM CHNCNT(D) ; FLUSH COUNTERS +IFN ITS,[ + LSH D,23. ;POSITION + IOR D,[.RESET 0] + XCT D ;RESET ITS CHANNEL +] +IFE ITS,[ + MOVEI A,100 ; TTY IN JFN + CFIBF +] + SETZM EXBUFR(B) ; CLOBBER STAKED BUFFS + MOVEI C,BUFSTR-1(B) ; FIND D.W. + PUSHJ P,BYTDOP + SUBI A,2 + HRLI A,010700 + MOVEM A,BUFSTR(B) + HLLZS BUFSTR-1(B) + POPJ P, + +; SUBROUTINE TO ESTABLISH ECHO IOINS + +MFUNCTION ECHOPAIR,SUBR + + ENTRY 2 + + GETYP A,(AB) ;CHECK ARG TYPES + GETYP C,2(AB) + CAIN A,TCHAN ;IS A CHANNEL + CAIE C,TCHAN ;IS C ALSO + JRST WRONGT ;NO, ONE OF THEM LOSES + + MOVE A,1(AB) ;GET CHANNEL + PUSHJ P,TCHANC ; VERIFY TTY IN + MOVE D,3(AB) ;GET OTHER CHANNEL + MOVEI B,DIRECT-1(D) ;AND ITS DIRECTION + PUSHJ P,CHRWRD + JFCL + CAME B,[ASCII /PRINT/] + JRST WRONGD + + MOVE B,BUFRIN(A) ;GET A'S AUX BUFFER + HRLZ C,CHANNO(D) ; GET CHANNEL + LSH C,5 + IOR C,[.IOT A] ; BUILD AN IOT + MOVEM C,ECHO(B) ;CLOBBER +CHANRT: MOVE A,(AB) + MOVE B,1(AB) ;RETURN 1ST ARG + JRST FINIS + +TCHANC: MOVEI B,DIRECT-1(A) ;GET DIRECTION + PUSHJ P,CHRWRD ; CONVERT + JFCL + CAME B,[ASCII /READ/] + JRST WRONGD + LDB C,[600,,STATUS(A)] ;GET A CODE + CAILE C,2 ;MAKE SURE A TTY FLAVOR DEVICE + JRST WRONGC + POPJ P, +IFE ITS,[ +TTYOPEN: +TTYOP2: MOVEI A,-1 ; TENEX JFN FOR TERMINAL + MOVEI 2,145100 ; MAGIC BITS (SEE TENEX MANUAL) + SFMOD ; ZAP + RFMOD ; LETS FIND SCREEN SIZE + LDB A,[220700,,B] ; GET PAGE WIDTH + LDB B,[310700,,B] ; AND LENGTH + MOVE C,TTOCHN+1(TVP) + MOVEM A,LINLN(C) + MOVEM B,PAGLN(C) + MOVEI A,-1 ; NOW HACK CNTL CHAR STUFF + RFCOC ; GET CURRENT + AND B,[036377,,-1] ; CHANGE FOR ^@, ^A AND ^D (FOR NOW) + SFCOC ; AND RESUSE IT + + POPJ P, +] + +IFN ITS,[ +TTYOP2: .SUSET [.RTTY,,C] + SETZM NOTTY + JUMPL C,TTYNO ; DONT HAVE TTY + +TTYOPEN: + SKIPE NOTTY + POPJ P, + .OPEN TTYIN,[SIXBIT / TTY/] + JRST TTYNO + .OPEN TTYOUT,[21,,(SIXBIT /TTY/)] ;AND OUTPUT + FATAL CANT OPEN TTY + DOTCAL TTYGET,[[1000,,TTYOUT],[2000,,0],[2000,,A],[2000,,B]] + FATAL .CALL FAILURE + DOTCAL TTYSET,[[1000,,TTYOUT],MODE1,MODE2,B] + FATAL .CALL FAILURE + +SETCHN: MOVE B,TTICHN+1(TVP) ;GET CHANNEL + MOVEI C,TTYIN ;GET ITS CHAN # + MOVEM C,CHANNO(B) + .STATUS TTYIN,STATUS(B) ;CLOBBER STATUS + + MOVE B,TTOCHN+1(TVP) ;GET OUT CHAN + MOVEI C,TTYOUT + MOVEM C,CHANNO(B) + .STATUS TTYOUT,STATUS(B) + SETZM IMAGFL ;RESET IMAGE MODE FLAG + HLLZS IOINS-1(B) + DOTCAL RSSIZE,[[1000,,TTYOUT],[2000,,C],[2000,,D]] + FATAL .CALL RSSIZE LOSSAGE + MOVEM C,PAGLN(B) + MOVEM D,LINLN(B) + POPJ P, + +; HERE IF TTY WONT OPEN + +TTYNO: SETOM NOTTY + POPJ P, +] + +MTYI: SKIPE NOTTY ; SKIP IF HAVE TTY + FATAL TRIED TO USE NON-EXISTANT TTY +IFN ITS, .IOT TTYIN,A +IFE ITS, PBIN + POPJ P, + +MTYO: SKIPE NOTTY + POPJ P, ; IGNORE, DONT HAVE TTY + SKIPE IMAGFL ;SKIP RE-OPENING IF ALREADY IN ASCII + PUSHJ P,MTYO1 ;WAS IN IMAGE...RE-OPEN + CAIE A,177 ;DONT OUTPUT A DELETE +IFN ITS, .IOT TTYOUT,A +IFE ITS, PBOUT + POPJ P, + +MTYO1: MOVE B,TTOCHN+1(TVP) + PUSH P,0 + PUSHJ P,REASCI + POP P,0 + POPJ P, + +; HERE FOR TYO TO ANY TTY FLAVOR DEVICE + +GMTYO: PUSH P,0 + HRRZ 0,IOINS-1(B) ; GET FLAG + SKIPE 0 + PUSHJ P,REASCI ; RE-OPEN TTY + HRLZ 0,CHANNO(B) + ASH 0,5 + IOR 0,[.IOT A] + CAIE A,177 ; DONE OUTPUT A DELETE + XCT 0 + POP P,0 + POPJ P, + +REASCI: PUSH P,A + PUSH P,C + PUSHJ P,DEVTOC + HRLI C,21 ; ASCII GRAPHIC BIT + MOVE A,CHANNO(B) ; GET CHANNEL + ASH A,23. ; TO AC FIELD + IOR A,[.OPEN 0,C] + XCT A + FATAL TTY OPEN LOSSAGE + POP P,C + POP P,A + HLLZS IOINS-1(B) + CAMN B,TTOCHN+1(TVP) + SETZM IMAGFL + POPJ P, + + + +WRONGC: PUSH TP,$TATOM + PUSH TP,EQUOTE NOT-A-TTY-TYPE-CHANNEL + JRST CALER1 + + + +; HERE TO HANDLE TTY BLOCKING AND UNBLOCKING + +TTYBLK: PUSH TP,$TCHAN + PUSH TP,B + PUSH P,0 + PUSH P,E ; SAVE SOME ACS +IFN ITS,[ + MOVE A,CHANNO(B) ; GET CHANNEL NUMBER + SOSG CHNCNT(A) ; ANY PENDING CHARS + JRST TTYBL1 + SETZM CHNCNT(A) + MOVEI 0,1 + LSH 0,(A) + .SUSET [.SIFPI,,0] ; SLAM AN INT ON +] +TTYBL1: MOVE C,BUFRIN(B) + MOVE A,SYSCHR(C) ; GET FLAGS + TRZ A,N.IMED + TRZE A,N.IME1 ; IF WILL BE + TRO A,N.IMED ; THE MAKE IT + MOVEM A,SYSCHR(C) +IFN ITS,[ + MOVE A,[.CALL TTYIOT]; NON-BUSY WAIT + SKIPE NOTTY + MOVE A,[.SLEEP A,] +] +IFE ITS,[ + MOVE A,[PUSHJ P,TNXIN] +] + MOVEM A,WAITNS(B) + PUSH TP,$TCHSTR + PUSH TP,CHQUOTE BLOCKED + PUSH TP,$TPVP + PUSH TP,PVP + MCALL 2,INTERRUPT + MOVSI A,TCHAN + MOVEM A,BSTO(PVP) + MOVE B,(TP) + ENABLE +REBLK: MOVEI A,-1 ; IN CASE SLEEPING + XCT WAITNS(B) ; NOW WAIT + JFCL +IFE ITS, JRST .-3 +IFN ITS, JRST CHRSNR ; SNARF CHAR +REBLK1: DISABLE ; FALL THROUG=> UNBLOCKED + SETZM BSTO(PVP) + POP P,E + POP P,0 + MOVE B,(TP) + SUB TP,[2,,2] + POPJ P, + +CHRSNR: SKIPE NOTTY ; TTY? + JRST REBLK ; NO, JUST RESET AND BLOCK + .SUSET [.SIFPI,,[1_]] + JRST REBLK ; AND GO BACK + +TTYIOT: SETZ + SIXBIT /IOT/ + 1000,,TTYIN + 0 + 405000,,20000 + +; HERE TO UNBLOCK TTY + +TTYUNB: MOVE A,WAITNS(B) ; GET INS + CAMN A,[JRST REBLK1] + JRST TTYUN1 + MOVE A,[JRST REBLK1] ; LEAVE THE SLEEP + MOVEM A,WAITNS(B) + PUSH TP,$TCHAN + PUSH TP,B + PUSH TP,$TCHSTR + PUSH TP,CHQUOTE UNBLOCKED + PUSH TP,$TCHAN + PUSH TP,B + MCALL 2,INTERRUPT + MOVE B,(TP) ; RESTORE CHANNEL + SUB TP,[2,,2] +TTYUN1: POPJ P, + +IFE ITS,[ +; TENEX BASIC TTY I/O ROUTINE + +TNXIN: PUSHJ P,MTYI + PUSHJ P,INCHAR + POPJ P, +] +MFUNCTION TTYECHO,SUBR + + ENTRY 2 + + GETYP 0,(AB) + CAIE 0,TCHAN + JRST WTYP1 + MOVE A,1(AB) ; GET CHANNEL + PUSHJ P,TCHANC ; MAKE SURE IT IS TTY INPUT + MOVE E,BUFRIN(A) ; EXTRA INFO BUFFER +IFN ITS,[ + DOTCAL TTYGET,[CHANNO(A),[2000,,B],[2000,,C],[2000,,0]] + FATAL .CALL FAILURE +] +IFE ITS,[ + MOVEI A,100 ; TTY JFN + RFMOD ; MODE IN B + TRZ B,6000 ; TURN OFF ECHO +] + GETYP D,2(AB) ; ARG 2 + CAIE D,TFALSE ; SKIP IF WANT ECHO OFF + JRST ECHOON + +IFN ITS,[ + ANDCM B,[606060,,606060] + ANDCM C,[606060,,606060] + + DOTCAL TTYSET,[CHANNO(A),B,C,0] + FATAL .CALL FAILURE +] +IFE ITS,[ + SFMOD +] + + MOVEI B,N.ECHO+N.CNTL ; SET FLAGS + IORM B,SYSCHR(E) + + JRST CHANRT + +ECHOON: +IFN ITS,[ + IOR B,[202020,,202020] + IOR C,[202020,,202020] + DOTCAL TTYSET,[CHANNO(A),B,C,0] + FATAL .CALL FAILURE +] +IFE ITS,[ + TRO B,4000 + SFMOD +] + MOVEI A,N.ECHO+N.CNTL + ANDCAM A,SYSCHR(E) + JRST CHANRT + + + +; USER SUBR FOR INSTANT CHARACTER SNARFING + +MFUNCTION UTYI,SUBR,TYI + + ENTRY + CAMGE AB,[-3,,] + JRST TMA + MOVE A,(AB) + MOVE B,1(AB) + JUMPL AB,.+3 + MOVE B,IMQUOTE INCHAN + PUSHJ P,IDVAL ; USE INCHAN + GETYP 0,A ; GET TYPE + CAIE 0,TCHAN + JRST WTYP1 + LDB 0,[600,,STATUS(B)] + CAILE 0,2 + JRST WTYP1 + SKIPN A,LSTCH(B) ; ANY READ AHEAD CHAR + JRST UTYI1 ; NO, SKIP + SETZM LSTCH(B) + TLZN A,400000 ; ! HACK? + JRST UTYI2 ; NO, OK + MOVEM A,LSTCH(B) ; YES SAVE + MOVEI A,"! ; RET AN ! + JRST UTYI2 + +UTYI1: MOVE 0,IOINS(B) + CAME 0,[PUSHJ P,GETCHR] + JRST WTYP1 + PUSH TP,$TCHAN + PUSH TP,B + MOVE C,BUFRIN(B) + MOVEI D,N.IME1+N.IMED + IORM D,SYSCHR(C) ; CLOBBER IT IN + DOTCAL TTYGET,[CHANNO(B),[2000,,A],[2000,,D],[2000,,0]] + FATAL .CALL FAILURE + PUSH P,A + PUSH P,0 + PUSH P,D ; SAVE THEM + IOR D,[030303,,030303] + IOR A,[030303,,030303] + DOTCAL TTYSET,[CHANNO(B),A,D,0] + FATAL .CALL FAILURE + MOVNI A,1 + SKIPE CHRCNT(C) ; ALREADY SOME? + PUSHJ P,INCHAR + MOVE C,BUFRIN(B) ; GET BUFFER BACK + MOVEI D,N.IME1 + IORM D,SYSCHR(C) + PUSHJ P,GETCHR + MOVE B,1(TB) + MOVE C,BUFRIN(B) + MOVEI D,N.IME1+N.IMED + ANDCAM D,SYSCHR(C) + POP P,D + POP P,0 + POP P,C + DOTCAL TTYSET,[CHANNO(B),C,D,0] + FATAL .CALL FAILURE +UTYI2: MOVEI B,(A) + MOVSI A,TCHRS + JRST FINIS + +MFUNCTION IMAGE,SUBR + ENTRY + JUMPGE AB,TFA ; 1 OR 2 ARGS NEEDED + GETYP A,(AB) ;GET THE TYPE OF THE ARG + CAIE A,TFIX ;CHECK IT FOR CORRECT TYPE + JRST WTYP1 ;WAS WRONG...ERROR EXIT + HLRZ 0,AB + CAIL 0,-2 + JRST USEOTC + CAIE 0,-4 + JRST TMA + GETYP 0,2(AB) + CAIE 0,TCHAN + JRST WTYP2 + MOVE B,3(AB) ; GET CHANNEL +IMAGE1: LDB 0,[600,,STATUS(B)] + CAILE 0,2 ; MUST BE TTY + JRST IMAGFO + MOVE 0,IOINS(B) + CAMN 0,[PUSHJ P,MTYO] + JRST .+3 + CAME 0,[PUSHJ P,GMTYO] + JRST WRONGD + HRRZ 0,IOINS-1(B) + JUMPE 0,OPNIMG +IMGIOT: MOVE A,1(AB) ;GET VALUE + HRLZ 0,CHANNO(B) + ASH 0,5 + IOR 0,[.IOT A] + XCT 0 +IMGEXT: MOVE A,(AB) ;RETURN THE ORIGINAL ARG + MOVE B,1(AB) + JRST FINIS ;EXIT + + +IMAGFO: PUSH TP,$TCHAN ;IMAGE OUTPUT FOR NON TTY + PUSH TP,B + MOVEI B,DIRECT-1(B) + PUSHJ P,CHRWRD + JFCL + CAME B,[ASCII /PRINT/] + CAMN B,[+1] + JRST .+2 + JRST BADCHN ; CHANNEL COULDNT BE BLESSED + MOVE B,(TP) + PUSHJ P,GWB ; MAKE SURE CHANNEL HAS BUFFER + MOVE A,1(AB) ; GET THE CHARACTER TO DO + PUSHJ P,W1CHAR + MOVE A,(AB) + MOVE B,1(AB) ;RETURN THE FIX + JRST FINIS + + +USEOTC: MOVSI A,TATOM + MOVE B,IMQUOTE OUTCHAN + PUSHJ P,IDVAL + GETYP 0,A + CAIE 0,TCHAN + MOVE B,TTICHN+1(TVP) + JRST IMAGE1 + +OPNIMG: HLLOS IOINS-1(B) + CAMN B,TTOCHN+1(TVP) + SETOM IMAGFL + PUSHJ P,DEVTOC + HRLI C,41 ; SUPER IMAGE BIT + MOVE A,CHANNO(B) + ASH A,23. + IOR A,[.OPEN 0,C] + XCT A + FATAL TTY OPEN LOSSAGE + JRST IMGIOT + +DEVTOC: PUSH P,D + PUSH P,E + PUSH P,0 + PUSH P,A + MOVE D,RDEVIC(B) + MOVE E,[220600,,C] + MOVEI A,3 + MOVEI C,0 + ILDB 0,D + SUBI 0,40 + IDPB 0,E + SOJG A,.-3 + POP P,A + POP P,0 + POP P,E + POP P,D + POPJ P, + +IMGBLK: OUT+IMAGEM+UNIT,,(SIXBIT /TTY/) + 0 + 0 + + + +IMPURE +IMAGFL: 0 +PURE + + +END + +TITLE READER FOR MUDDLE + +;C. REEVE DEC. 1970 + +RELOCA + +READER==1 ;TELL MUDDLE > TO USE SOME SPECIAL HACKS +FRMSIN==1 ;FLAG SAYING WHETHER OR "." AND "'" HACKS EXIST + +.INSRT MUDDLE > + +.GLOBAL CONS,VECTOR,NXTCHR,RLOOKU,CRADIX,SPTIME,QUOTE,TENTAB,CHMAK,FLUSCH,ITENTB +.GLOBAL SETDEV,OPNCHN,ILVAL,RADX,IDVAL,LSTCH,EVECTOR,EUVECTOR,CHUNW +.GLOBAL CHRWRD,EOFCND,DIRECT,ACCESS,IOINS,ROOT,DIRECT,DOIOTI,DOACCS,IGVAL,BYTDOP +.GLOBAL ICONS,INCONS,IEVECT,IEUVEC,BUFSTR,TYPFND,SQUTOA,IBLOCK,GRB +.GLOBAL BADCHN,WRONGD,CHNCLS,FNFFL,IPUT,IGET,ILOC,RXCT,WXCT,IUNWIN,UNWIN2 +.GLOBAL CNXTCH,CREADC,MPOPJ,CREDC1,CNXTC1,IREMAS + +BUFLNT==100 + +FF=0 ;FALG REGISTER DURING NUMBER CONVERSION + +;FLAGS USED (RIGHT HALF) + +NOTNUM==1 ;NOT A NUMBER +NFIRST==2 ;NOT FIRST CHARACTER BEING READ +DECFRC==4 ;FORCE DECIMAL CONVERSION +NEGF==10 ;NEGATE THIS THING +NUMWIN==20 ;DIGIT(S) SEEN +INSTRN==40 ;IN QUOTED CHARACTER STRING +FLONUM==100 ;NUMBER IS FLOOATING POINT +DOTSEN==200 ;. SEEN IN IMPUT STREAM +EFLG==400 ;E SEEN FOR EXPONENT +IFN FRMSIN,[ + FRSDOT==1000 ;. CAME FIRST + USEAGN==2000 ;SPECIAL DOT HACK +] +OCTWIN==4000 +OCTSTR==10000 + +;TEMPORARY OFFSETS + +VCNT==0 ;NUMBER OF ELEMENTS IN CURRENT VECTOR +ONUM==1 ;CURRENT NUMBER IN OCTAL +DNUM==3 ;CURRENT NUMBER IN DECIMAL +FNUM==5 ;CURRENTLY UNUSED +CNUM==7 ;IN CURRENT RADIX +NDIGS==11 ;NUMBER OF DIGITS +ENUM==13 ;EXPONENT + + + ; TEXT FILE LOADING PROGRAM + +MFUNCTION MLOAD,SUBR,[LOAD] + + ENTRY + + HLRZ A,AB ;GET NO. OF ARGS + CAIE A,-4 ;IS IT 2 + JRST TRY2 ;NO, TRY ANOTHER + GETYP A,2(AB) ;GET TYPE + CAIE A,TOBLS ;IS IT OBLIST + CAIN A,TLIST ; OR LIST THEREOF? + JRST CHECK1 + JRST WTYP2 + +TRY2: CAIE A,-2 ;IS ONE SUPPLIED + JRST WNA + +CHECK1: GETYP A,(AB) ;GET TYPE + CAIE A,TCHAN ;IS IT A CHANNEL + JRST WTYP1 + +LOAD1: HLRZ A,TB ;GET CURRENT TIME + PUSH TP,$TTIME ;AND SAVE IT + PUSH TP,A + + MOVEI C,CLSNGO ; LOCATION OF FUNNY CLOSER + PUSHJ P,IUNWIN ; SET UP AS UNWINDER + +LOAD2: PUSH TP,(AB) ;USE SUPPLIED CHANNEL + PUSH TP,1(AB) + PUSH TP,(TB) ;USE TIME AS EOF ARG + PUSH TP,1(TB) + CAML AB,[-2,,0] ;CHECK FOR 2ND ARG + JRST LOAD3 ;NONE + PUSH TP,2(AB) ;PUSH ON 2ND ARG + PUSH TP,3(AB) + MCALL 3,READ + JRST CHKRET ;CHECK FOR EOF RET + +LOAD3: MCALL 2,READ +CHKRET: CAMN A,(TB) ;IS TYPE EOF HACK + CAME B,1(TB) ;AND IS VALUE + JRST EVALIT ;NO, GO EVAL RESULT + PUSH TP,(AB) + PUSH TP,1(AB) + MCALL 1,FCLOSE + MOVE A,$TCHSTR + MOVE B,CHQUOTE DONE + JRST FINIS + +CLSNGO: PUSH TP,$TCHAN + PUSH TP,1(AB) + MCALL 1,FCLOSE + JRST UNWIN2 ; CONTINUE UNWINDING + +EVALIT: PUSH TP,A + PUSH TP,B + MCALL 1,EVAL + JRST LOAD2 + + + +; OTHER FILE LOADING PROGRAM + + + +MFUNCTION FLOAD,SUBR + + ENTRY + + MOVEI C,1 ;INITIALIZE OPEN'S ARG COUNT + PUSH TP,$TAB ;SLOT FOR SAVED AB + PUSH TP,[0] ;EMPTY FOR NOW + PUSH TP,$TCHSTR ;PUT IN FIRST ARG + PUSH TP,CHQUOTE READ + MOVE A,AB ;COPY OF ARGUMENT POINTER + +FARGS: JUMPGE A,CALOPN ;DONE? IF SO CALL OPEN + GETYP B,(A) ;NO, CHECK TYPE OF THIS ARG + CAIE B,TOBLS ;OBLIST? + CAIN B,TLIST ; OR LIST THEREOF + JRST OBLSV ;YES, GO SAVE IT + + PUSH TP,(A) ;SAVE THESE ARGS + PUSH TP,1(A) + ADD A,[2,,2] ;BUMP A + AOJA C,FARGS ;COUNT AND GO + +OBLSV: MOVEM A,1(TB) ;SAVE THE AB + +CALOPN: ACALL C,FOPEN ;OPEN THE FILE + + JUMPGE B,FNFFL ;FILE MUST NO EXIST + EXCH A,(TB) ;PLACE CHANNEL ON STACK + EXCH B,1(TB) ;OBTAINING POSSIBLE OBLIST + JUMPN B,2ARGS ;OBLIST SUOPPLIED? + + MCALL 1,MLOAD ;NO, JUST CALL + JRST FINIS + + +2ARGS: PUSH TP,(B) ;PUSH THE OBLIST + PUSH TP,1(B) + MCALL 2,MLOAD + JRST FINIS + + +FNFFL: PUSH TP,$TATOM + PUSH TP,EQUOTE FILE-SYSTEM-ERROR + JUMPE B,CALER1 + PUSH TP,A + PUSH TP,B + MOVEI A,2 + JRST CALER + + MFUNCTION READ,SUBR + + ENTRY + + PUSH P,[IREAD1] ;WHERE TO GO AFTER BINDING +READ0: PUSH TP,$TTP ;SLOT FOR LAST THING READ (TYPE IS UNREADABLE) + PUSH TP,[0] + PUSH TP,$TFIX ;SLOT FOR RADIX + PUSH TP,[0] + PUSH TP,$TCHAN ;AND SLOT FOR CHANNEL + PUSH TP,[0] + PUSH TP,[0] ; USER DISP SLOT + PUSH TP,[0] + PUSH TP,$TSPLICE + PUSH TP,[0] ;SEGMENT FOR SPLICING MACROS + JUMPGE AB,READ1 ;NO ARGS, NO BINDING + GETYP C,(AB) ;ISOLATE TYPE + CAIN C,TUNBOU + JRST WTYP1 + PUSH TP,[TATOM,,-1] ;PUSH THE ATOMS + PUSH TP,IMQUOTE INCHAN + PUSH TP,(AB) ;PUSH ARGS + PUSH TP,1(AB) + PUSH TP,[0] ;DUMMY + PUSH TP,[0] + MOVE B,1(AB) ;GET CHANNEL POINTER + ADD AB,[2,,2] ;AND ARG POINTER + JUMPGE AB,BINDEM ;MORE? + PUSH TP,[TVEC,,-1] + ADD B,[EOFCND-1,,EOFCND-1] + PUSH TP,B + PUSH TP,(AB) + PUSH TP,1(AB) + ADD AB,[2,,2] + JUMPGE AB,BINDEM ;IF ANY MORE ARGS GO PROCESS AND BIND THEM + GETYP C,(AB) ;ISOLATE TYPE + CAIE C,TLIST + CAIN C,TOBLS + SKIPA + JRST WTYP3 + PUSH TP,[TATOM,,-1] ;PUSH THE ATOMS + PUSH TP,IMQUOTE OBLIST + PUSH TP,(AB) ;PUSH ARGS + PUSH TP,1(AB) + PUSH TP,[0] ;DUMMY + PUSH TP,[0] + ADD AB,[2,,2] ;AND ARG POINTER + JUMPGE AB,BINDEM ; ALL DONE, BIND ATOMS + GETYP 0,(AB) ; GET TYPE OF TABLE + CAIE 0,TVEC ; SKIP IF BAD TYPE + JRST WTYP ; ELSE COMPLAIN + PUSH TP,[TATOM,,-1] + PUSH TP,IMQUOTE READ-TABLE + PUSH TP,(AB) + PUSH TP,1(AB) + PUSH TP,[0] + PUSH TP,[0] + ADD AB,[2,,2] ; BUMP TO NEXT ARG + JUMPL AB,TMA ;MORE ?, ERROR +BINDEM: PUSHJ P,SPECBIND + JRST READ1 + +MFUNCTION RREADC,SUBR,READCHR + + ENTRY + PUSH P,[IREADC] + JRST READC0 ;GO BIND VARIABLES + +MFUNCTION NXTRDC,SUBR,NEXTCHR + + ENTRY + + PUSH P,[INXTRD] +READC0: CAMGE AB,[-5,,] + JRST TMA + PUSH TP,(AB) + PUSH TP,1(AB) + JUMPL AB,READC1 + MOVE B,IMQUOTE INCHAN + PUSHJ P,IDVAL + GETYP A,A + CAIE A,TCHAN + JRST BADCHN + MOVEM A,-1(TP) + MOVEM B,(TP) +READC1: PUSHJ P,@(P) + JRST .+2 + JRST FINIS + + PUSH TP,-1(TP) + PUSH TP,-1(TP) + MCALL 1,FCLOSE + MOVE A,EOFCND-1(B) + MOVE B,EOFCND(B) + CAML AB,[-3,,] + JRST .+3 + MOVE A,2(AB) + MOVE B,3(AB) + PUSH TP,A + PUSH TP,B + MCALL 1,EVAL + JRST FINIS + + +MFUNCTION PARSE,SUBR + + ENTRY + + PUSHJ P,GAPRS ;GET ARGS FOR PARSES + PUSHJ P,GPT ;GET THE PARSE TABLE + PUSHJ P,NXTCH ; GET A CHAR TO TEST FOR ! ALT + SKIPN 11.(TB) ; EOF HIT, COMPLAIN TO LOOSER + JRST NOPRS + MOVEI A,33 ; CHANGE IT TO AN ALT, SNEAKY HUH? + CAIN B,MANYT ; TYPE OF MULTIPLE CLOSE, I.E. ! ALT + MOVEM A,5(TB) + PUSHJ P,IREAD1 ;GO DO THE READING + JRST .+2 + JRST LPSRET ;PROPER EXIT +NOPRS: PUSH TP,$TATOM + PUSH TP,EQUOTE CAN'T-PARSE + JRST CALER1 + +MFUNCTION LPARSE,SUBR + + ENTRY + + PUSHJ P,GAPRS ;GET THE ARGS TO THE PARSE + JRST LPRS1 + +GAPRS: PUSH TP,$TTP + PUSH TP,[0] + PUSH TP,$TFIX + PUSH TP,[10.] + PUSH TP,$TFIX + PUSH TP,[0] ; LETTER SAVE + PUSH TP,[0] + PUSH TP,[0] ; PARSE TABLE MAYBE? + PUSH TP,$TSPLICE + PUSH TP,[0] ;SEGMENT FOR SPLICING MACROS + PUSH TP,[0] ;SLOT FOR LOCATIVE TO STRING + PUSH TP,[0] + JUMPGE AB,USPSTR + PUSH TP,[TATOM,,-1] + PUSH TP,IMQUOTE PARSE-STRING + PUSH TP,(AB) + PUSH TP,1(AB) ; BIND OLD PARSE-STRING + PUSH TP,[0] + PUSH TP,[0] + PUSHJ P,SPECBIND + ADD AB,[2,,2] + JUMPGE AB,USPSTR + GETYP 0,(AB) + CAIE 0,TFIX + JRST WTYP2 + MOVE 0,1(AB) + MOVEM 0,3(TB) + ADD AB,[2,,2] + JUMPGE AB,USPSTR + GETYP 0,(AB) + CAIE 0,TLIST + CAIN 0,TOBLS + SKIPA + JRST WTYP3 + PUSH TP,[TATOM,,-1] + PUSH TP,IMQUOTE OBLIST + PUSH TP,(AB) + PUSH TP,1(AB) ; HE WANTS HIS OWN OBLIST + PUSH TP,[0] + PUSH TP,[0] + PUSHJ P,SPECBIND + ADD AB,[2,,2] + JUMPGE AB,USPSTR + GETYP 0,(AB) + CAIE 0,TVEC + JRST WTYP + PUSH TP,[TATOM,,-1] + PUSH TP,IMQUOTE PARSE-TABLE + PUSH TP,(AB) + PUSH TP,1(AB) + PUSH TP,[0] + PUSH TP,[0] + PUSHJ P,SPECBIND + ADD AB,[2,,2] + JUMPGE AB,USPSTR + GETYP 0,(AB) + CAIE 0,TCHRS + JRST WTYP + MOVE 0,1(AB) + MOVEM 0,5(TB) ; STUFF IN A LOOK-AHEAD CHARACTER IF HE WANTS + ADD AB,[2,,2] + JUMPL AB,TMA +USPSTR: MOVE B,IMQUOTE PARSE-STRING + PUSHJ P,ILOC ; GET A LOCATIVE TO THE STRING, WHEREVER + GETYP 0,A + CAIN 0,TUNBOUND ; NONEXISTANT + JRST BDPSTR + GETYP 0,(B) ; IT IS POINTING TO A STRING + CAIE 0,TCHSTR + JRST BDPSTR + MOVEM A,10.(TB) + MOVEM B,11.(TB) + POPJ P, + +LPRS1: PUSHJ P,GPT ; GET THE VALUE OF PARSE-TABLE IN SLOT + PUSH TP,$TLIST + PUSH TP,[0] ; HERE WE ARE MAKE PLACE TO SAVE GOODIES + PUSH TP,$TLIST + PUSH TP,[0] +LPRS2: PUSHJ P,IREAD1 + JRST LPRSDN ; IF WE ARE DONE, WE ARE THROUGH + MOVE C,A + MOVE D,B + PUSHJ P,INCONS + SKIPN -2(TP) + MOVEM B,-2(TP) ; SAVE THE BEGINNING ON FIRST + SKIPE C,(TP) + HRRM B,(C) ; PUTREST INTO IT + MOVEM B,(TP) + JRST LPRS2 +LPRSDN: MOVSI A,TLIST + MOVE B,-2(TP) +LPSRET: SKIPLE C,5(TB) ; EXIT FOR PARSE AND LPARSE + CAIN C,400033 ; SEE IF NO PEEK AHEAD OR IF ! ALTMODE + JRST FINIS ; IF SO NO NEED TO BACK STRING ONE + SKIPN C,11.(TB) + JRST FINIS ; IF ATE WHOLE STRING, DONT GIVE BACK ANY +BUPRS: MOVEI D,1 + ADDM D,(C) ; AOS THE COUNT OF STRING LENGTH + SKIPG D,1(C) ; SEXIER THAN CLR'S CODE FOR DECREMENTING + SUB D,[430000,,1] ; A BYTE POINTER + ADD D,[70000,,0] + MOVEM D,1(C) + HRRZ E,2(TB) + JUMPE E,FINIS ; SEE IF WE NEED TO BACK UP TWO + HLLZS 2(TB) ; CLEAR OUT DOUBLE CHR LOOKY FLAG + JRST BUPRS ; AND BACK UP PARSE STRING A LITTLE MORE + + ; ARGUMENTS ARE BOUND, NOW GET THE VALUES OF THINGS + + +GRT: MOVE B,IMQUOTE READ-TABLE + SKIPA ; HERE TO GET TABLE FOR READ +GPT: MOVE B,IMQUOTE PARSE-TABLE + MOVSI A,TATOM ; TO FILL SLOT WITH PARSE TABLE + PUSHJ P,ILVAL + GETYP 0,A + CAIN 0,TUNBOUND + POPJ P, + CAIE 0,TVEC + JRST BADPTB + MOVEM A,6(TB) + MOVEM B,7(TB) + POPJ P, + +READ1: PUSHJ P,GRT + MOVE B,IMQUOTE INCHAN + MOVSI A,TATOM + PUSHJ P,IDVAL ;NOW GOBBLE THE REAL CHANNEL + TLZ A,TYPMSK#777777 + HLLZS A ; INCASE OF FUNNY BUG + CAME A,$TCHAN ;IS IT A CHANNEL + JRST BADCHN + MOVEM A,4(TB) ; STORE CHANNEL + MOVEM B,5(TB) + HRRZ A,-4(B) + TRC A,C.OPN+C.READ + TRNE A,C.OPN+C.READ + JRST WRONGD + HLLOS 4(TB) + TRNE A,C.BIN ; SKIP IF NOT BIN + JRST BREAD ; CHECK FOR BUFFER + HLLZS 4(TB) +GETIOA: MOVE B,5(TB) +GETIO: MOVE A,IOINS(B) ;GOBBLE THE I/O INSTRUCTION + JUMPE A,OPNFIL ;GO REALLY OPEN THE CROCK + MOVE A,RADX(B) ;GET RADIX + MOVEM A,3(TB) + MOVEM B,5(TB) ;SAVE CHANNEL +REREAD: MOVE D,LSTCH(B) ;ANY CHARS AROUND? + MOVEI 0,33 + CAIN D,400033 ;FLUSH THE TERMINATOR HACK + MOVEM 0,LSTCH(B) ; MAKE ! ALT INTO JUST ALT IF IT IS STILL AROUND + + PUSHJ P,@(P) ;CALL INTERNAL READER + JRST BADTRM ;LOST +RFINIS: SUB P,[1,,1] ;POP OFF LOSER + PUSH TP,A + PUSH TP,B + JUMPE C,FLSCOM ; FLUSH TOP LEVEL COMMENT + PUSH TP,C + PUSH TP,D + MOVE A,4(TB) + MOVE B,5(TB) ; GET CHANNEL + MOVSI C,TATOM + MOVE D,MQUOTE COMMENT + PUSHJ P,IPUT +RFINI1: POP TP,B + POP TP,A + JRST FINIS + +FLSCOM: MOVE A,4(TB) + MOVE B,5(TB) + MOVSI C,TATOM + MOVE D,MQUOTE COMMENT + PUSHJ P,IREMAS + JRST RFINI1 + +BADTRM: MOVE C,5(TB) ; GET CHANNEL + JUMPGE B,CHLSTC ;NO, MUST BE UNMATCHED PARENS + SETZM LSTCH(C) ; DONT REUSE EOF CHR + PUSH TP,4(TB) ;CLOSE THE CHANNEL + PUSH TP,5(TB) + MCALL 1,FCLOSE + PUSH TP,EOFCND-1(B) + PUSH TP,EOFCND(B) + MCALL 1,EVAL ;AND EVAL IT + SETZB C,D + GETYP 0,A ; CHECK FOR FUNNY ACT + CAIE 0,TREADA + JRST RFINIS ; AND RETURN + + PUSHJ P,CHUNW ; UNWIND TO POINT + MOVSI A,TREADA ; SEND MESSAGE BACK + JRST CONTIN + +;HERE TO ATTEMPT TO OPEN A CLOSED CHANNEL + +OPNFIL: PUSHJ P,OPNCHN ;GO DO THE OPEN + JUMPGE B,FNFFL ;LOSE IC B IS 0 + JRST GETIO + + +CHLSTC: MOVE B,5(TB) ;GET CHANNEL BACK + JRST REREAD + + +BREAD: MOVE B,5(TB) ; GET CHANNEL + SKIPE BUFSTR(B) + JRST GETIO + MOVEI A,BUFLNT ; GET A BUFFER + PUSHJ P,IBLOCK + MOVEI C,BUFLNT(B) ; POINT TO END + HRLI C,440700 + MOVE B,5(TB) ; CHANNEL BACK + MOVEI 0,C.BUF + IORM 0,-4(B) + MOVEM C,BUFSTR(B) + MOVSI C,TCHSTR+.VECT. + MOVEM C,BUFSTR-1(B) + JRST GETIO + ;MAIN ENTRY TO READER + +NIREAD: PUSHJ P,LSTCHR +NIREA1: PUSH P,[-1] ; DONT GOBBLE COMMENTS + JRST IREAD2 + +IREAD: + PUSHJ P,LSTCHR ;DON'T REREAD LAST CHARACTER +IREAD1: PUSH P,[0] ; FLAG SAYING SNARF COMMENTS +IREAD2: INTGO +BDLP: SKIPE C,9.(TB) ;HAVE WE GOT A SPLICING MACRO LEFT + JRST SPLMAC ;IF SO GIVE HIM SOME OF IT + PUSHJ P,NXTCH ;GOBBLE CHAR IN A AND TYPE IN D + MOVMS B ; FOR SPECIAL NEG HACK OF MACRO TABLES + CAIG B,ENTYPE + JUMPN B,@DTBL-1(B) ;ERROR ON ZERO TYPE OR FUNNY TYPE + JRST BADCHR + + +SPLMAC: HRRZ D,(C) ;GET THE REST OF THE SEGMENT + MOVEM D,9.(TB) ;AND PUT BACK IN PLACE + GETYP D,(C) ;SEE IF DEFERMENT NEEDED + CAIN D,TDEFER + MOVE C,1(C) ;IF SO, DO DEFEREMENT + MOVE A,(C) + MOVE B,1(C) ;GET THE GOODIE + AOS -1(P) ;ALWAYS A SKIP RETURN + POP P,(P) ;DONT WORRY ABOUT COMMENT SEARCHAGE + SETZB C,D ;MAKE SURE HE DOESNT THINK WE GOT COMMENT + POPJ P, ;GIVE HIM WHAT HE DESERVES + +DTBL: NUMLET ;HERE IF NUMBER OR LETTER + NUMLET ;NUMBER +NUMCOD==.-DTBL + NUMLET ;+- +PLUMIN==.-DTBL + NUMLET ;. +DOTTYP==.-DTBL + NUMLET ;E +NONSPC==.-DTBL ;NUMBER OF NON-SPECIAL CHARACTERS + SPACE ;SPACING CHAR CR,LF,SP,TAB ETC. +SPATYP==.-DTBL ;TYPE FOR SPACE CHARS + + +;THE FOLLOWING ENTRIES ARE VARIOUS PUNCTUATION CROCKS + + LPAREN ;( - BEGIN LIST + RPAREN ;) - END CURRENT LEVEL OF INPUT + LBRACK ;[ -BEGIN ARRAY +LBRTYP==.-DTBL + RBRACK ;] - END OF ARRAY + QUOTIT ;' - QUOTE THE FOLLOWING GOODIE +QUOTYP==.-DTBL + + MACCAL ;% - INVOKE A READ TIME MACRO +MACTYP==.-DTBL + CSTRING ;" - CHARACTER STRING +CSTYP==.-DTBL + NUMLET ;\ - ESCAPE,BEGIN ATOM + +ESCTYP==.-DTBL ;TYPE OF ESCAPE CHARACTER + + SPECTY ;# - SPECIAL TYPE TO BE READ +SPCTYP==.-DTBL + OPNANG ;< - BEGIN ELEMENT CALL + +SLMNT==.-DTBL ;TYPE OF START OF SEGMENT + + CLSANG ;> - END ELEMENT CALL + + + EOFCHR ;^C - END OF FILE + + COMNT ;; - BEGIN COMMENT +COMTYP==.-DTBL ;TYPE OF START OF COMMENT + + GLOVAL ;, - GET GLOBAL VALUE +GLMNT==.-DTBL + ILLSQG ;{ - START TEMPLATE STRUCTURE +TMPTYP==.-DTBL + CLSBRA ;} - END TEMPLATE STRUCTURE + +NTYPES==.-DTBL + + + +; EXTENDED TABLE FOR ! HACKS + + NUMLET ; !! FAKE OUT + SEGDOT ;!. - CALL TO LVAL (SEG) +DOTEXT==.-DTBL + UVECIN ;![ - INPUT UNIFORM VECTOR ] +LBREXT==.-DTBL + QUOSEG ;!' - SEG CALL TO QUOTE +QUOEXT==.-DTBL + SINCHR ;!" - INPUT ONE CHARACTER +CSEXT==.-DTBL + SEGIN ;!< - SEG CALL +SLMEXT==.-DTBL + GLOSEG ;!, - SEG CALL TO GVAL +GLMEXT==.-DTBL + LOSPATH ;!- - PATH NAME SEPARATOR +PATHTY==.-DTBL + TERM ;!$ - (EXCAL-ALT MODE) PUT ALL CLOSES +MANYT==.-DTBL + USRDS1 ; DISPATCH FOR USER TABLE (NO !) +USTYP1==.-DTBL + USRDS2 ; " " " " (WITH !) +USTYP2==.-DTBL +ENTYPE==.-DTBL + + + +SPACE: PUSHJ P,LSTCHR ;DONT REREAD SPACER + JRST BDLP + +USRDS1: SKIPA B,A ; GET CHAR IN B +USRDS2: MOVEI B,200(A) ; ! CHAR, DISP 200 FURTHER + ASH B,1 + ADD B,7(TB) ; POINT TO TABLE ENTRY + GETYP 0,(B) + CAIN 0,TLIST + MOVE B,1(B) ; IF LIST, USE FIRST ITEM-SPECIAL NO BREAK HACK + SKIPL C,5(TB) ; GET CHANNEL POINTER (IF ANY) + JRST USRDS3 + ADD C,[EOFCND-1,,EOFCND-1] + PUSH TP,$TBVL + HRRM SP,(TP) ; BUILD A TBVL + MOVE SP,TP + PUSH TP,C + PUSH TP,(C) + PUSH TP,1(C) + MOVEI D,PVLNT*2+1(PVP) + HRLI D,TREADA + MOVEM D,(C) + MOVEI D,(TB) + HLL D,OTBSAV(TB) + MOVEM D,1(C) +USRDS3: PUSH TP,(B) ; APPLIER + PUSH TP,1(B) + PUSH TP,$TCHRS ; APPLY TO CHARACTER + PUSH TP,A + PUSHJ P,LSTCHR ; FLUSH CHAR + MCALL 2,APPLY ; GO TO USER GOODIE + HRRZ SP,(SP) ; UNBIND MANUALLY + MOVEI D,(TP) + SUBI D,(SP) + MOVSI D,(D) + HLL SP,TP + SUB SP,D + SUB TP,[4,,4] ; FLUSH TP CRAP + GETYP 0,A ; CHECK FOR DISMISS? + CAIN 0,TSPLICE + JRST GOTSPL ; RETURN OF SEGMENT INDICATES SPLICAGE + CAIN 0,TREADA ; FUNNY? + JRST DOEOF + CAIE 0,TDISMI + JRST RET ; NO, RETURN FROM IREAD + JRST BDLP ; YES, IGNORE RETURN + +GOTSPL: MOVEM B,9.(TB) ; STICK IN THE SPLICAGE SLOT SO IREADS WILL GET HIM + JRST BDLP ; GO BACK AND READ FROM OUR SPLICE, OK? + + +;HERE ON NUMBER OR LETTER, START ATOM + +NUMLET: PUSHJ P,GOBBLE ;READ IN THE ATOM AND PUT PNTR ON ARG PDL + JRST RET ;NO SKIP RETURN I.E. NON NIL + +;HERE TO START BUILDING A CHARACTER STRING GOODIE + +CSTRING: PUSHJ P,GOBBL1 ;READ IN STRING + JRST RET + +;ARRIVE HERE TO INVOKE A READ TIME MACRO FUNCTION + +MACCAL: PUSHJ P,NXTCH1 ;READ ONE MORE CHARACTER + CAIE B,MACTYP ;IS IT ANOTHER MACRO CHAR + + JRST MACAL2 ;NO, CALL MACRO AND USE VALUE + PUSHJ P,LSTCHR ;DONT REREAD % + PUSHJ P,MACAL1 ;OTHERWISE, USE SIDE EFFECCT, BUT NOT VALUE + JRST IREAD2 + +MACAL2: PUSH P,CRET +MACAL1: PUSHJ P,IREAD1 ;READ FUNCTION NAME + JRST RETERR + PUSH TP,C + PUSH TP,D ; SAVE COMMENT IF ANY + PUSH TP,A ;SAVE THE RESULT + PUSH TP,B ;AND USE IT AS AN ARGUMENT + MCALL 1,EVAL + POP TP,D + POP TP,C ; RESTORE COMMENT IF ANY... +CRET: POPJ P,RET12 + +;CALL GOBBLE TO FIND THE TYPE AND THEN IREAD TO READ IT + +SPECTY: PUSHJ P,NIREAD ; READ THE TYPES NAME (SHOULD BE AN ATOM) + JRST RETERR + PUSH TP,A + PUSH TP,B + PUSHJ P,NXTCH ; GET NEXT CHAR + CAIN B,TMPTYP ; SKIP IF NOT TEMPLATE START + JRST RDTMPL + SETZB A,B + EXCH A,-1(TP) + EXCH B,(TP) + PUSH TP,A ;BEGIN SETTING UP CHTYPE CALL + PUSH TP,B + PUSHJ P,IREAD1 ;NOW READ STRUCTURE + JRST RETER1 + MOVEM C,-3(TP) ; SAVE COMMENT + MOVEM D,-2(TP) + EXCH A,-1(TP) ;USE AS FIRST ARG + EXCH B,(TP) + PUSH TP,A ;USE OTHER AS 2D ARG + PUSH TP,B + MCALL 2,CHTYPE ;ATTEMPT TO MUNG +RET13: POP TP,D + POP TP,C ; RESTORE COMMENT +RET12: SETOM (P) ; DONT LOOOK FOR MORE! + JRST RET + +RDTMPL: PUSH P,["}] ; SET UP TERMINATE TEST + MOVE B,(TP) + PUSHJ P,IGVAL + MOVEM A,-1(TP) + MOVEM B,(TP) + PUSH P,[BLDTMP] ; FLAG FOR VECTOR READING CODE + JRST LBRAK2 + +BLDTMP: ADDI A,1 ; 1 MORE ARGUMENT + ACALL A,APPLY ; DO IT TO IT + POPJ P, + +RETER1: SUB TP,[2,,2] +RETERR: SKIPL A,5(TB) + MOVEI A,5(TB)-LSTCH ;NO CHANNEL, USE SLOT + MOVEM B,LSTCH(A) ; RESTORE LAST CHAR + PUSHJ P,ERRPAR + JRST RET1 + +;THIS CODE CALLS IREAD RECURSIVELY TO READ THAT WHICH IS +;BETWEEN (), ARRIVED AT WHEN ( IS READ + +SEGIN: PUSH TP,$TSEG + JRST OPNAN1 + +OPNANG: PUSH TP,$TFORM ;SAVE TYPE +OPNAN1: PUSH P,[">] + JRST LPARN1 + +LPAREN: PUSH P,[")] + PUSH TP,$TLIST ;START BY ASSUMING NIL +LPARN1: PUSH TP,[0] + PUSHJ P,LSTCHR ;DON'T REREAD PARENS +LLPLOP: PUSHJ P,IREAD1 ;READ IT + JRST LDONE ;HIT TERMINATOR + +;HERE WHEN MUST ADD CAR TO CURRENT WINNER + +GENCAR: PUSH TP,C ; SAVE COMMENT + PUSH TP,D + MOVE C,A ; SET UP CALL + MOVE D,B + PUSHJ P,INCONS ; CONS ON TO NIL + POP TP,D + POP TP,C + POP TP,E ;GET CDR + JUMPN E,CDRIN ;IF STACKED GOODIE NOT NIL SKIP + PUSH TP,B ;AND USE AS TOTAL VALUE + PUSH TP,$TLIST ;SAVE THIS AS FIRSST THING ON LIST + MOVE A,-2(TP) ; GET REAL TYPE + JRST .+2 ;SKIP CDR SETTING +CDRIN: HRRM B,(E) + PUSH TP,B ;CLOBBER IN NEW PARTIAL GOODIE + JUMPE C,LLPLOP ; JUMP IF NO COMMENT + PUSH TP,C + PUSH TP,D + MOVSI C,TATOM + MOVE D,MQUOTE COMMENT + PUSHJ P,IPUT + JRST LLPLOP ;AND CONTINUE + +; HERE TO RAP UP LIST + +LDONE: CAME B,(P) ;CHECK VALIDITY OF CHARACTER + PUSHJ P,MISMAT ;REPORT MISMATCH + SUB P, [1,,1] + POP TP,B ;GET VALUE OF PARTIAL RESULT + POP TP,A ;AND TYPE OF SAME + JUMPE B,RET ;VALUE IS NIL, DON'T POP AGAIN + POP TP,B ;POP FIRST LIST ELEMENT + POP TP,A ;AND TYPE + JRST RET + +;THIS CODE IS SIMILAR TO LIST GENERATING CODE BUT IS FOR VECTORS +OPNBRA: PUSH P,["}] ; SAVE TERMINATOR +UVECIN: PUSH P,[135] ; CLOSE SQUARE BRACKET + PUSH P,[IEUVECTOR] ;PUSH NAME OF U VECT HACKER + JRST LBRAK2 ;AND GO + +LBRACK: PUSH P,[135] ; SAVE TERMINATE + PUSH P,[IEVECTOR] ;PUSH GEN VECTOR HACKER +LBRAK2: PUSHJ P,LSTCHR ;FORCE READING NEW CHAR + PUSH P,[0] ; COUNT ELEMENTS + PUSH TP,$TLIST ; AND SLOT FOR GOODIES + PUSH TP,[0] + +LBRAK1: PUSHJ P,IREAD1 ;RECURSIVELY READ ELEMENTS OF ARRAY + JRST LBDONE ;RAP UP ON TERMINATOR + +STAKIT: EXCH A,-1(TP) ; STORE RESULT AND GET CURRENT LIST + EXCH B,(TP) + AOS (P) ; COUNT ELEMENTS + JUMPE C,LBRAK3 ; IF NO COMMENT, GO ON + MOVEI E,(B) ; GET CDR + PUSHJ P,ICONS ; CONS IT ON + MOVEI E,(B) ; SAVE RS + MOVSI C,TFIX ; AND GET FIXED NUM + MOVE D,(P) + PUSHJ P,ICONS +LBRAK3: PUSH TP,A ; SAVE CURRENT COMMENT LIST + PUSH TP,B + JRST LBRAK1 + +; HERE TO RAP UP VECTOR + +LBDONE: CAME B,-2(P) ; FINISHED RETURN (WAS THE RIGHT STOP USED?) + PUSHJ P,MISMAB ; WARN USER + POP TP,1(TB) ; REMOVE COMMENT LIST + POP TP,(TB) + MOVE A,(P) ; COUNT TO A + PUSHJ P,-1@(P) ; MAKE THE VECTOR + SUB P,[3,,3] + +; PUT COMMENTS ON VECTOR (OR UVECTOR) + + MOVNI C,1 ; INDICATE TEMPLATE HACK + CAMN A,$TVEC + MOVEI C,1 + CAMN A,$TUVEC ; SKIP IF UVECTOR + MOVEI C,0 + PUSH P,C ; SAVE + PUSH TP,A ; SAVE VECTOR/UVECTOR + PUSH TP,B + +VECCOM: SKIPN C,1(TB) ; ANY LEFT? + JRST RETVEC ; NO, LEAVE + MOVE A,1(C) ; ASSUME WINNING TYPES + SUBI A,1 + HRRZ C,(C) ; CDR THE LIST + HRRZ E,(C) ; AGAIN + MOVEM E,1(TB) ; SAVE CDR + GETYP E,(C) ; CHECK DEFFERED + MOVSI D,(E) + CAIN E,TDEFER ; SKIP IF NOT DEFERRED + MOVE C,1(C) + CAIN E,TDEFER + GETYPF D,(C) ; GET REAL TYPE + MOVE B,(TP) ; GET VECTOR POINTER + SKIPGE (P) ; SKIP IF NOT TEMPLATE + JRST TMPCOM + HRLI A,(A) ; COUNTER + LSH A,@(P) ; MAYBE SHIFT IT + ADD B,A + MOVE A,-1(TP) ; TYPE +TMPCO1: PUSH TP,D + PUSH TP,1(C) ; PUSH THE COMMENT + MOVSI C,TATOM + MOVE D,MQUOTE COMMENT + PUSHJ P,IPUT + JRST VECCOM + +TMPCOM: MOVSI A,(A) + ADD B,A + MOVSI A,TTMPLT + JRST TMPCO1 + +RETVEC: SUB P,[1,,1] + POP TP,B + POP TP,A + JRST RET + +; BUILD A SINGLE CHARACTER ITEM + +SINCHR: PUSHJ P,NXTC1 ;FORCE READ NEXT + CAIN B,ESCTYP ;ESCAPE? + PUSHJ P,NXTC1 ;RETRY + MOVEI B,(A) + MOVSI A,TCHRS + JRST RETCL + + +; HERE ON RIGHT PAREN, BRACKET, ANGLE BRACKET OR CTL C + +CLSBRA: +CLSANG: ;CLOSE ANGLE BRACKETS +RBRACK: ;COMMON RETURN FOR END OF ARRAY ALSO +RPAREN: PUSHJ P,LSTCHR ;DON'T REREAD +EOFCH1: MOVE B,A ;GETCHAR IN B + MOVSI A,TCHRS ;AND TYPE IN A +RET1: SUB P,[1,,1] + POPJ P, + +EOFCHR: SETZB C,D + JUMPL A,EOFCH1 ; JUMP ON REAL EOF + JRST RRSUBR ; MAYBE A BINARY RSUBR + +DOEOF: MOVE A,[-1,,3] + SETZB C,D + JRST EOFCH1 + + +; NORMAL RETURN FROM IREAD/IREAD1 + +RETCL: PUSHJ P,LSTCHR ;DONT REREAD +RET: AOS -1(P) ;SKIP + POP P,E ; POP FLAG +RETC: JUMPL E,RET2 ; DONT LOOK FOR COMMENTS + PUSH TP,A ; SAVE ITEM + PUSH TP,B +CHCOMN: PUSHJ P,NXTCH ; READ A CHARACTER + CAIE B,COMTYP ; SKIP IF COMMENT + JRST CHSPA + PUSHJ P,IREAD ; READ THE COMMENT + JRST POPAJ + MOVE C,A + MOVE D,B + JRST .+2 +POPAJ: SETZB C,D + POP TP,B + POP TP,A +RET2: POPJ P, + +CHSPA: CAIN B,SPATYP + PUSHJ P,SPACEQ ; IS IT A REAL SPACE + JRST POPAJ + PUSHJ P,LSTCHR ; FLUSH THE SPACE + JRST CHCOMN + +;RANDOM MINI-SUBROUTINES USED BY THE READER + +;READ A CHAR INTO A AND TYPE CODE INTO D + +NXTC1: SKIPL B,5(TB) ;GET CHANNEL + JRST NXTPR1 ;NO CHANNEL, GO READ STRING + SKIPE LSTCH(B) + PUSHJ P,CNTACC ; COUNT ON ACCESS POINTER + JRST NXTC2 +NXTC: SKIPL B,5(TB) ;GET CHANNEL + JRST NXTPRS ;NO CHANNEL, GO READ STRING + SKIPE A,LSTCH(B) ;CHAR IN A IF REUSE + JRST PRSRET +NXTC2: PUSHJ P,RXCT ;GET CHAR FROM INPUT + HLLZS 2(TB) ;FLAG INDICATING ONE CHAR LOOK AHEAD + MOVEM A,LSTCH(B) ;SAVE THE CHARACTER +PRSRET: TRZE A,400000 ;DONT SKIP IF SPECIAL + JRST RETYPE ;GO HACK SPECIALLY +GETCTP: CAILE A,177 ; CHECK RANGE + JRST BADCHR + PUSH P,A ;AND SAVE FROM DIVISION + ANDI A,177 + IDIVI A,CHRWD ;YIELDS WORD AND CHAR NUMBER + LDB B,BYTPNT(B) ;GOBBLE TYPE CODE + POP P,A + POPJ P, + +NXTPRS: SKIPE A,5(TB) ;GET OLD CHARACTER IF ONE EXISTS + JRST PRSRET +NXTPR1: MOVEI A,400033 + PUSH P,C + MOVE C,11.(TB) + HRRZ B,(C) ;GET THE STRING + SOJL B,NXTPR3 + HRRM B,(C) + ILDB A,1(C) ;GET THE CHARACTER FROM THE STRING +NXTPR2: MOVEM A,5(TB) ;SAVE IT + POP P,C + JRST PRSRET ;CONTINUE +NXTPR3: SETZM 8.(TB) + SETZM 9.(TB) ;CLEAR OUT LOCATIVE, AT END OF STRING + JRST NXTPR2 + +; NXTCH AND NXTCH1 ARE SAME AS NXTC AND NXTC1 EXCEPT THEY CHECK ! +; HACKS + +NXTCH1: PUSHJ P,NXTC1 ;READ CHAR + JRST .+2 +NXTCH: PUSHJ P,NXTC ;READ CHAR + CAIGE B,NTYPES+1 ;IF 1 > THAN MAX, MUST BE SPECIAL + JRST CHKUS1 ; CHECK FOR USER DISPATCH + + CAIN B,NTYPES+1 ;FOR OBSCURE BUG FOUND BY MSG + PUSHJ P,NXTC1 ;READ NEXT ONE + HLLOS 2(TB) ;FLAG FOR TWO CHAR LOOK AHEAD + +RETYP1: CAIN A,". ;!. + MOVEI B,DOTEXT ;YES, GET EXTENDED TYPE + CAIN A,"[ + MOVEI B,LBREXT + CAIN A,"' + MOVEI B,QUOEXT + CAIN A,"" + MOVEI B,CSEXT + CAIN A,"- + MOVEI B,PATHTY + CAIN A,"< + MOVEI B,SLMEXT + CAIN A,", + MOVEI B,GLMEXT + CAIN A,33 + MOVEI B,MANYT ;! ALTMODE + +CRMLST: ADDI A,400000 ;CLOBBER LASTCHR + PUSH P,B + SKIPL B,5(TB) ;POINT TO CHANNEL + MOVEI B,5(TB)-LSTCH ;NO CHANNEL, POINT AT SLOT + MOVEM A,LSTCH(B) + SUBI A,400000 ;DECREASE CHAR + POP P,B + +CHKUS2: SKIPN 7(TB) ; SKIP IF USER TABLE + JRST UPLO + PUSH P,A + ADDI A,200 + ASH A,1 ; POINT TO SLOT + HRLS A + ADD A,7(TB) + SKIPL A ;IS THERE VECTOR ENOUGH? + JRST CHKUS4 + SKIPN 1(A) ; NON-ZERO==>USER FCN EXISTS + JRST CHKUS4 ; HOPE HE APPRECIATES THIS + MOVEI B,USTYP2 +CHKRDO: PUSH P,0 ; CHECK FOR REDOING IF CHAR IN TABLE + GETYP 0,(A) + CAIE 0,TCHRS + JRST CHKUS5 + POP P,0 ;WE ARE TRANSMOGRIFYING + POP P,(P) ;FLUSH OLD CHAR + MOVE A,1(A) ;GET NEW CHARACTER + PUSH P,7(TB) + PUSH P,2(TB) ; FLAGS FOR NUM OF CHRS IN LOOK AHEAD + PUSH P,5(TB) ; TO AVOID SMASHING LSTCHR + SETZM 5(TB) ; CLEAR OUT CHANNEL + SETZM 7(TB) ;CLEAR OUT TABLE + TRZE A,200 ; ! HACK + TRO A,400000 ; TURN ON PROPER BIT + PUSHJ P,PRSRET + POP P,5(TB) ; GET BACK CHANNEL + POP P,2(TB) + POP P,7(TB) ;GET BACK OLD PARSE TABLE + POPJ P, + +CHKUS5: CAIE 0,TLIST + JRST .+4 ; SPECIAL NON-BREAK TYPE HACK + MOVNS -1(P) ; INDICATE BY NEGATIVE + MOVE A,1(A) ; GET <1 LIST> + GETYP 0,(A) ; AND GET THE TYPE OF THAT + CAIE 0,TFIX ; SEE IF HE WANTS SAME CHAR WITH DIFF TYPE + JRST CHKUS6 ; JUST A VANILLA HACK + MOVE A,1(A) ; PRETEND IT IS SAME TYPE AS NEW CHAR + PUSH P,7(TB) ; CLEAR OUT TRANSLATE TABLE + PUSH P,2(TB) ; FLAGS FOR # OF CHRS IN LOOK AHEAD + SETZM 7(TB) + TRZE A,200 + TRO A,400000 ; TURN ON PROPER BIT IF ! HACK + PUSHJ P,PRSRET ; REGET TYPE + POP P,2(TB) + POP P,7(TB) ; PUT TRANSLATE TABLE BACK +CHKUS6: SKIPGE -1(P) ; SEE IF A SPECIAL NON-BREAK + MOVNS B ; SEXY, HUH? + POP P,0 + POP P,A + MOVMS A ; FIX UP A POSITIVE CHARACTER + POPJ P, + +CHKUS4: POP P,A + JRST UPLO + +CHKUS1: SKIPN 7(TB) ; USER CHECK FOR NOT ! CASE + POPJ P, + PUSH P,A + ASH A,1 + HRLS A + ADD A,7(TB) + SKIPL A + JRST CHKUS3 + SKIPN 1(A) + JRST CHKUS3 + MOVEI B,USTYP1 + JRST CHKRDO ; TRANSMOGRIFY CHARACTER? + +CHKUS3: POP P,A + POPJ P, + +UPLO: POPJ P, ; LETS NOT AND SAY WE USED TO + ; AVOID STRANGE ! BLECHAGE + +RETYPE: PUSHJ P,GETCTP ;GET TYPE OF CHAR + JRST RETYP1 + +NXTCS: PUSHJ P,NXTC + PUSH P,A ; HACK TO NOT TRANSLATE CHAR + PUSHJ P,CHKUS1 ; BUT DO TRANSLATION OF TYPE IF HE WANTS + POP P,A ; USED TO BUILD UP STRINGS + POPJ P, + +CHKALT: CAIN A,33 ;ALT? + MOVEI B,MANYT + JRST CRMLST + + +TERM: MOVEI B,0 ;RETURN A 0 + JRST RET1 + ;AND RETURN + +CHKMIN: CAIN A,"- ; IF CHAR IS -, WINNER + MOVEI B,PATHTY + JRST CRMLST + +LOSPAT: PUSHJ P,LSTCHR ; FIX RECURSIVE LOSAGE + PUSH TP,$TATOM + PUSH TP,EQUOTE UNATTACHED-PATH-NAME-SEPARATOR + JRST CALER1 + + +; HERE TO SEE IF READING RSUBR + +RRSUBR: PUSHJ P,LSTCHR ; FLUSH JUST READ CHAR + SKIPL B,5(TB) ; SKIP IF A CHANNEL EXISTS + JRST SPACE ; ELSE LIKE A SPACE + MOVE C,@BUFSTR(B) ; SEE IF FLAG SAYS START OF RSUBR + TRNN C,1 ; SKIP IF REAL RSUBR + JRST SPACE ; NO, IGNORE FOR NOW + +; REALLY ARE READING AN RSUBR + + HRRZ 0,4(TB) ; GET READ/READB INDICATOR + MOVE C,ACCESS(B) ; GET CURRENT ACCESS + JUMPN 0,.+3 ; ALREADY WORDS, NO NEED TO DIVIDE + ADDI C,4 ; ROUND UP + IDIVI C,5 + PUSH P,C ; SAVE WORD ACCESS + MOVEI A,(C) ; COPY IT FOR CALL + JUMPN 0,.+3 + IMULI C,5 + MOVEM C,ACCESS(B) ; FIXUP ACCESS + HLLZS ACCESS-1(B) ; FOR READB LOSER + PUSHJ P,DOACCS ; AND GO THERE + PUSH P,[0] ; FOR READ IN + HRROI A,(P) ; PREPARE TO READ LENGTH + PUSHJ P,DOIOTI ; READ IT + POP P,C ; GET READ GOODIE + MOVEI A,(C) ; COPY FOR GETTING BLOCK + ADDI C,1 ; COUNT COUNT WORD + ADDM C,(P) + PUSH TP,$TUVEC ; WILL HOLD UVECTOR OF FIXUPS IF THEY STAY + PUSH TP,[0] + PUSHJ P,IBLOCK ; GET A BLOCK + PUSH TP,$TUVEC + PUSH TP,B ; AND SAVE + MOVE A,B ; READY TO IOT IT IN + MOVE B,5(TB) ; GET CHANNEL BACK + MOVSI 0,TUVEC ; SETUP A'S TYPE + MOVEM 0,ASTO(PVP) + PUSHJ P,DOIOTI ; IN COMES THE WHOLE BLOCK + SETZM ASTO(PVP) ; A NO LONGER SPECIAL + MOVEI C,BUFSTR-1(B) ; NO RESET BUFFER + PUSHJ P,BYTDOP ; A POINTS TO DOPW WORD + SUBI A,2 + HRLI A,010700 ; SETUP BYTE POINTER TO END + HLLZS BUFSTR-1(B) ; ZERO CHAR COUNNT + MOVEM A,BUFSTR(B) + HRRZ A,4(TB) ; READ/READB FLG + MOVE C,(P) ; ACCESS IN WORDS + SKIPN A ; SKIP FOR ASCII + IMULI C,5 ; BUMP + MOVEM C,ACCESS(B) ; UPDATE ACCESS + PUSHJ P,NIREAD ; READ RSUBR VECTOR + JRST BRSUBR ; LOSER + GETYP A,A ; VERIFY A LITTLE + CAIE A,TVEC ; DONT SKIP IF BAD + JRST BRSUBR ; NOT A GOOD FILE + PUSHJ P,LSTCHR ; FLUSH REREAD CHAR + MOVE C,(TP) ; CODE VECTOR BACK + MOVSI A,TCODE + HLR A,B ; FUNNY COUNT + MOVEM A,(B) ; CLOBBER + MOVEM C,1(B) + PUSH TP,$TRSUBR ; MAKE RSUBR + PUSH TP,B + +; NOW LOOK OVER FIXUPS + + MOVE B,5(TB) ; GET CHANNEL + MOVE C,ACCESS(B) + HLLZS ACCESS-1(B) ; FOR READB LOSER + HRRZ 0,4(TB) ; READ/READB FLG + JUMPN 0,RSUB1 + ADDI C,4 ; ROUND UP + IDIVI C,5 ; TO WORDS + MOVEI D,(C) ; FIXUP ACCESS + IMULI D,5 + MOVEM D,ACCESS(B) ; AND STORE +RSUB1: ADDI C,1 ; ACCOUNT FOR EXTRA COUNTERS + MOVEM C,(P) ; SAVE FOR LATER + MOVEI A,-1(C) ; FOR DOACS + MOVEI C,2 ; UPDATE REAL ACCESS + SKIPN 0 ; SKIP FOR READB CASE + MOVEI C,10. + ADDM C,ACCESS(B) + PUSHJ P,DOACCS ; DO THE ACCESS + PUSH TP,$TUVEC ; SLOT FOR FIXUP BUFFER + PUSH TP,[0] + +; FOUND OUT IF FIXUPS STAY + + MOVE B,MQUOTE KEEP-FIXUPS + PUSHJ P,ILVAL ; GET VALUE + GETYP 0,A + MOVE B,5(TB) ; CHANNEL BACK TO B + CAIE 0,TUNBOU + CAIN 0,TFALSE + JRST RSUB4 ; NO, NOT KEEPING FIXUPS + PUSH P,[0] ; SLOT TO READ INTO + HRROI A,(P) ; GET LENGTH OF SAME + PUSHJ P,DOIOTI + POP P,C + MOVEI A,(C) ; GET UVECTOR FOR KEEPING + ADDM C,(P) ; ACCESS TO END + PUSH P,C ; SAVE LENGTH OF FIXUPS + PUSHJ P,IBLOCK + MOVEM B,-6(TP) ; AND SAVE + MOVE A,B ; FOR IOTING THEM IN + ADD B,[1,,1] ; POINT PAST VERS # + MOVEM B,(TP) + MOVSI C,TUVEC + MOVEM C,ASTO(PVP) + MOVE B,5(TB) ; AND CHANNEL + PUSHJ P,DOIOTI ; GET THEM + SETZM ASTO(PVP) + MOVE A,(TP) ; GET VERS + PUSH P,-1(A) ; AND PUSH IT + JRST RSUB5 + +RSUB4: PUSH P,[0] + PUSH P,[0] ; 2 SLOTS FOR READING + MOVEI A,-1(P) + HRLI A,-2 + PUSHJ P,DOIOTI + MOVE C,-1(P) + MOVE D,(P) + ADDM C,-2(P) ; NOW -2(P) IS ACCESS TO END OF FIXUPS +RSUB5: MOVEI C,BUFSTR-1(B) ; FIXUP BUFFER + PUSHJ P,BYTDOP + SUBI A,2 ; POINT BEFORE D.W. + HRLI A,10700 + MOVEM A,BUFSTR(B) + HLLZS BUFSTR-1(B) + SKIPE -6(TP) + JRST RSUB2A + SUBI A,BUFLNT-1 ; ALSO MAKE AN IOT FLAVOR BUFFER + HRLI A,-BUFLNT + MOVEM A,(TP) + MOVSI C,TUVEC + MOVEM C,ASTO(PVP) + PUSHJ P,DOIOTI + SETZM ASTO(PVP) +RSUB2A: PUSH P,-1(P) ; ANOTHER COPY OF LENGTH OF FIXUPS + +; LOOP FIXING UP NEW TYPES + +RSUB2: PUSHJ P,WRDIN ; SEE WHAT NEXT THING IS + JRST RSUB3 ; NO MORE, DONE + JUMPL E,STSQ ; MUST BE FIRST SQUOZE + MOVNI 0,(E) ; TO UPDATE AMNT OF FIXUPS + ADDB 0,(P) + HRLI E,(E) ; IS LENGTH OF STRING IN WORDS + ADD E,(TP) ; FIXUP BUFFER POINTER + JUMPL E,.+3 + SUB E,[BUFLNT,,BUFLNT] + JUMPGE E,.-1 ; STILL NOT RIGHT + EXCH E,(TP) ; FIX UP SLOT + HLRE C,E ; FIX BYTE POINTER ALSO + IMUL C,[-5] ; + CHARS LEFT + MOVE B,5(TB) ; CHANNEL + PUSH TP,BUFSTR-1(B) + PUSH TP,BUFSTR(B) + HRRM C,BUFSTR-1(B) + HRLI E,440700 ; AND BYTE POINTER + MOVEM E,BUFSTR(B) + PUSHJ P,NIREAD ; READ ATOM NAME OF TYPE + TDZA 0,0 ; FLAG LOSSAGE + MOVEI 0,1 ; WINNAGE + MOVE C,5(TB) ; RESET BUFFER + POP TP,BUFSTR(C) + POP TP,BUFSTR-1(C) + JUMPE 0,BRSUBR ; BAD READ OF RSUBR + GETYP A,A ; A LITTLE CHECKING + CAIE A,TATOM + JRST BRSUBR + PUSHJ P,LSTCHR ; FLUSH REREAD CHAR + HRRZ 0,4(TB) ; FIXUP ACCESS PNTR + MOVE C,5(TB) + MOVE D,ACCESS(C) + HLLZS ACCESS-1(C) ; FOR READB HACKER + ADDI D,4 + IDIVI D,5 + IMULI D,5 + SKIPN 0 + MOVEM D,ACCESS(C) ; RESET +TYFIXE: PUSHJ P,TYPFND ; SEE IF A LEGAL TYPE NAME + JRST TYPFIX ; GO SEE USER ABOUT THIS + PUSHJ P,FIXCOD ; GO FIX UP THE CODE + JRST RSUB2 + +; NOW FIX UP SUBRS ETC. IF NECESSARY + +STSQ: MOVE B,MQUOTE MUDDLE + PUSHJ P,IGVAL ; GET CURRENT VERS + CAME B,-1(P) ; SKIP IF NO FIXUPS NEEDED + JRST DOFIX0 ; MUST DO THEM + +; ALL DONE, ACCESS PAST FIXUPS AND RETURN + +RSUB3: MOVE A,-3(P) + MOVE B,5(TB) + MOVEI C,(A) ; UPDATE CHANNEL ACCESS IN CASE SKIPPING + HRRZ 0,4(TB) ; READ/READB FLAG + SKIPN 0 + IMULI C,5 + MOVEM C,ACCESS(B) ; INTO ACCESS SLOT + HLLZS ACCESS-1(B) + PUSHJ P,DOACCS ; ACCESSED + MOVEI C,BUFSTR-1(B) ; FIX UP BUFFER + PUSHJ P,BYTDOP + SUBI A,2 + HRLI A,10700 + MOVEM A,BUFSTR(B) + HLLZS BUFSTR-1(B) + SKIPN A,-6(TP) ; SKIP IF KEEPING FIXUPS + JRST RSUB6 + PUSH TP,$TUVEC + PUSH TP,A + MOVSI A,TRSUBR + MOVE B,-4(TP) + MOVSI C,TATOM + MOVE D,MQUOTE RSUBR + PUSHJ P,IPUT ; DO THE ASSOCIATION + +RSUB6: MOVE B,-2(TP) ; GET RSUBR + MOVSI A,TRSUBR + SUB P,[4,,4] ; FLUSH P CRUFT + SUB TP,[10,,10] + JRST RET + +; FIXUP SUBRS ETC. + +DOFIX0: SKIPN C,-6(TP) ; GET BUFFER IF KEEPING + JRST DOFIXE + MOVEM B,(C) ; CLOBBER + JRST DOFIXE + +FIXUPL: PUSHJ P,WRDIN + JRST RSUB3 +DOFIXE: JUMPGE E,BRSUBR + TLZ E,740000 ; KILL BITS + PUSHJ P,SQUTOA ; LOOK IT UP + JRST BRSUBR + MOVEI D,(E) ; FOR FIXCOD + PUSHJ P,FIXCOD ; FIX 'EM UP + JRST FIXUPL + +; ROUTINE TO FIXUP ACTUAL CODE + +FIXCOD: MOVEI E,0 ; FOR HWRDIN + PUSH P,D ; NEW VALUE + PUSHJ P,HWRDIN ; GET HW NEEDED + MOVE D,(P) ; GET NEW VAL + MOVE A,(TP) ; AND BUFFER POINTER + SKIPE -6(TP) ; SAVING? + HRLM D,-1(A) ; YES, CLOBBER + SUB C,(P) ; DIFFERENCE + MOVN D,C + +FIXLP: PUSHJ P,HWRDIN ; GET AN OFFSET + JUMPE C,FIXED + HRRES C ; MAKE NEG IF NEC + JUMPL C,LHFXUP + ADD C,-4(TP) ; POINT INTO CODE + ADDM D,-1(C) + JRST FIXLP + +LHFXUP: MOVMS C + ADD C,-4(TP) + MOVSI 0,(D) + ADDM 0,-1(C) + JRST FIXLP + +FIXED: SUB P,[1,,1] + POPJ P, + +; ROUTINE TO READ A WORD FROM BUFFER + +WRDIN: PUSH P,A + PUSH P,B + SOSG -3(P) ; COUNT IT DOWN + JRST WRDIN1 + AOS -2(P) ; SKIP RETURN + MOVE B,5(TB) ; CHANNEL + HRRZ A,4(TB) ; READ/READB SW + MOVEI E,5 + SKIPE A + MOVEI E,1 + ADDM E,ACCESS(B) + MOVE A,(TP) ; BUFFER + MOVE E,(A) + AOBJP A,WRDIN2 ; NEED NEW BUFFER + MOVEM A,(TP) +WRDIN1: POP P,B + POP P,A + POPJ P, + +WRDIN2: MOVE B,-3(P) ; IS THIS LAST WORD? + SOJLE B,WRDIN1 ; YES, DONT RE-IOT + SUB A,[BUFLNT,,BUFLNT] + MOVEM A,(TP) + MOVSI B,TUVEC + MOVEM B,ASTO(PVP) + MOVE B,5(TB) + PUSHJ P,DOIOTI + SETZM ASTO(PVP) + JRST WRDIN1 + +; READ IN NEXT HALF WORD + +HWRDIN: JUMPN E,NOIOT ; USE EXISTING WORD + PUSH P,-3(P) ; FAKE OUT WRDIN IF NEC. + PUSHJ P,WRDIN + JRST BRSUBR + POP P,-4(P) ; RESET COUNTER + HLRZ C,E ; RET LH + POPJ P, + +NOIOT: HRRZ C,E + MOVEI E,0 + POPJ P, + +TYPFIX: PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-TYPE-NAME + PUSH TP,$TATOM + PUSH TP,B + PUSH TP,$TATOM + PUSH TP,EQUOTE ERRET-TYPE-NAME-DESIRED + MCALL 3,ERROR + JRST TYFIXE + +BRSUBR: PUSH TP,$TATOM + PUSH TP,EQUOTE RSUBR-IN-BAD-FORMAT + JRST CALER1 + + + +;TABLE OF BYTE POINTERS FOR GETTING CHARS + +BYTPNT": 350700,,CHTBL(A) + 260700,,CHTBL(A) + 170700,,CHTBL(A) + 100700,,CHTBL(A) + 010700,,CHTBL(A) + +;HERE ARE THE TABLES OF CHXRACTERS (NOTE EVERYTHING NOT SPECIFIED IS +;IN THE NUMBER LETTER CATAGORY) + +SETCHR 2,[0123456789] + +SETCHR 3,[+-] + +SETCHR 4,[.] + +SETCHR 5,[Ee] + +SETCOD 6,[15,12,11,14,40,33] ;ALL ARE TYPE 2 (SPACING - FF,TAB,SPACE,ALT-MODE) + +INCRCH 7,[()[]'%"\#<>] ;GIVE THESE INCREASRNG CODES FROM 3 + +SETCOD 22,[3] ;^C - EOF CHARACTER + +INCRCH 23,[;,{}!] ;COMMENT AND GLOBAL VALUE AND SPECIAL + +CHTBL: + OUTTBL ;OUTPUT THE TABLE RIGHT HERE + + + ; THIS CODE FLUSHES WANDERING COMMENTS + +COMNT: PUSHJ P,IREAD + JRST COMNT2 + JRST BDLP + +COMNT2: SKIPL A,5(TB) ; RESTORE CHANNEL + MOVEI A,5(TB)-LSTCH ;NO CHANNEL, POINT AT SLOT + MOVEM B,LSTCH(A) ; CLOBBER IN CHAR + PUSHJ P,ERRPAR + JRST BDLP + +;SUBROUTINE TO READ CHARS ONTO STACK + +GOBBL1: MOVEI FF,0 ;KILL ALL FLAGS + PUSHJ P,LSTCHR ;DON'T REREAD " + TROA FF,NOTNUM+INSTRN ;SURPRESS NUMBER CONVERSION +GOBBLE: MOVEI FF,0 ;FLAGS CONCERRNING CURRENT GOODIE IN HERE + MOVE A,TP ;GOBBLE CURRENT TP TO BE PUSHED + MOVEI C,6 ;NOW PUSH 6 0'S ON TO STACK + PUSH TP,$TFIX ;TYPE IS FIXED + PUSH TP,FF ;AND VALUE IS 0 + SOJG C,.-2 ;FOUR OF THEM + PUSH TP,$TTP ;NOW SAVE OLD TP + ADD A,[1,,1] ;MAKE IT LOOK LIKE A TB + PUSH TP,A + MOVEI D,0 ;ZERO OUT CHARACTER COUNT +GOB1: MOVSI C,(<440700,,(P)>) ;SET UP FIRST WORD OF CHARS + PUSH P,[0] ;BYTE POINTER +GOB2: PUSH P,FF ;SAVE FLAG REGISTER + INTGO ; IN CASE P OVERFLOWS + MOVEI A,NXTCH + TRNE FF,INSTRN + MOVEI A,NXTCS ; HACK TO GET MAYBE NEW TYPE WITHOUT CHANGE + PUSHJ P,(A) + POP P,FF ;AND RESTORE FLAG REGISTER + CAIN B,ESCTYP ;IS IT A CHARACTER TO BE ESCAPED + JRST ESCHK ;GOBBLE THE ESCAPED CHARACTER + TRNE FF,INSTRN ;ARE WE BUILDING A CHAR STRING + JRST ADSTRN ;YES, GO READ IN + CAILE B,NONSPC ;IS IT SPECIAL + JRST DONEG ;YES, RAP THIS UP + + TRNE FF,NOTNUM ;IS NUMERIC STILL WINNING + JRST SYMB2 ;NO, ONLY DO CHARACTER HACKING + CAIL A,60 ;CHECK FOR DIGIT + CAILE A,71 + JRST SYMB1 ;NOT A DIGIT + JRST CNV ;GO CONVERT TO NUMBER + CNV: + +;ARRIVE HERE IF STILL BUILDING A NUMBER +CNV: MOVE B,(TP) ;GOBBLE POINTER TO TEMPS + TRO FF,NUMWIN ;SAY DIGITSSEEN + SUBI A,60 ;CONVERT TO A NUMBER + TRNE FF,EFLG ;HAS E BEEN SEEN + JRST ECNV ;YES, CONVERT EXPONENT + TRNE FF,DOTSEN ;HAS A DOT BEEN SEEN + + JRST DECNV ;YES, THIS IS A FLOATING NUMBER + + MOVE E,ONUM(B) ; OCTAL CONVERT + LSH E,3 + ADDI E,(A) + MOVEM E,ONUM(B) + TRNE FF,OCTSTR ; SKIP OTHER CONVERSIONS IF OCTAL FORCE + JRST CNV1 + + JFCL 17,.+1 ;KILL ALL FLAGS + MOVE E,CNUM(B) ;COMPUTE CURRENT RADIX + IMUL E,3(TB) + ADD E,A ;ADD IN CURRENT DIGIT + JFCL 10,.+2 + MOVEM E,CNUM(B) ;AND SAVE IT + + + +;INSERT OCTAL AND CRADIX CROCK HERE IF NECESSSARY + JRST DECNV1 ;CONVERT TO DECIMAL(FIXED) + + +DECNV: TRO FF,FLONUM ;SET FLOATING FLAG +DECNV1: JFCL 17,.+1 ;CLEAR ALL FLAGS + MOVE E,DNUM(B) ;GET DECIMAL NUMBER + IMULI E,10. + JFCL 10,CNV2 ;JUMP IF OVERFLOW + ADD E,A ;ADD IN DIGIT + MOVEM E,DNUM(B) + TRNE FF,FLONUM ;IS THIS FRACTION? + SOS NDIGS(B) ;YES, DECREASE EXPONENT BY ONE + +CNV1: PUSHJ P,NXTCH ;RE-GOBBLE CHARACTER + JRST SYMB2 ;ALSO DEPOSIT INTO SYMBOL BEING MADE +CNV2: ;OVERFLOW IN DECIMAL NUMBER + TRNE FF,DOTSEN ;IS THIS FRACTION PART? + JRST CNV1 ;YES,IGNORE DIGIT + AOS NDIGS(B) ;NO, INCREASE IMPLICIT EXPONENT BY ONE + TRO FF,FLONUM ;SET FLOATING FLAG BUT + JRST CNV1 ;DO NOT FORCE DECIMAL(DECFRC) + +ECNV: ;CONVERT A DECIMAL EXPONENT + HRRZ E,ENUM(B) ;GET EXPONENT + IMULI E,10. + ADD E,A ;ADD IN DIGIT + TLNN E,777777 ;IF OVERFLOW INTO LEFT HALF + HRRM E,ENUM(B) ;DO NOT STORE(CATCH ERROR LATER) + JRST CNV1 + JRST SYMB2 ;ALSO DEPOSIT INTO SYMBOL BEING MADE + + +;HERE TO PUT INTO IDENTIFIER BEING BUILT + +ESCHK: PUSHJ P,NXTC1 ;GOBBLE NEXT CHAR +SYMB: MOVE B,(TP) ;GET BACK TEM POINTER + TRNE FF,EFLG ;IF E FLAG SET + HLRZ FF,ENUM(B) ;RESTORE SAVED FLAGS + TRO FF,NOTNUM ;SET NOT NUMBER FLAG +SYMB2: TRO FF,NFIRST ;NOT FIRST IN WORLD +SYMB3: IDPB A,C ;INSERT IT + PUSHJ P,LSTCHR ;READ NEW CHARACTER + TLNE C,760000 ;WORD FULL? + AOJA D,GOB2 ;NO, KEEP TRYING + AOJA D,GOB1 ;COUNT WORD AND GO + +;HERE TO CHECK FOR +,-,. IN NUMBER + +SYMB1: TRNE FF,NFIRST ;IS THIS THE FIRST CHARACTER + JRST CHECK. ;NO, ONLY LOOK AT DOT + CAIE A,"- ;IS IT MINUS + JRST .+3 ;NO CHECK PLUS + TRO FF,NEGF ;YES, NEGATE AT THE END + JRST SYMB2 + CAIN A,"+ ;IS IT + + JRST SYMB2 ;ESSENTIALLY IGNORE IT + CAIE A,"* ; FUNNY OCTAL CROCK? + JRST CHECK. + + TRO FF,OCTSTR + JRST SYMB2 + +;COULD BE . + +CHECK.: PUSHJ P,LSTCHR ;FLUSH LAST CHARACTER + MOVEI E,0 + TRNN FF,DOTSEN+EFLG ;IF ONE ALREADY SEEN + CAIE A,". + JRST CHECKE ;GO LOOK FOR E + +IFN FRMSIN,[ + TRNN FF,NFIRST ;IS IT THE FIRST + JRST DOT1 ;YES, COULD MEAN EVALUATE A VARIABLE +] + +CHCK.1: TRO FF,DECFRC+DOTSEN ;FORCE DECIMAL +IFN FRMSIN, TRNN FF,FRSDOT ;IF NOT FIRST ., PUT IN CHAR STRING + JRST SYMB2 ;ENTER INTO SYMBOL +IFN FRMSIN, JRST GOB2 ;IGNORE THE "." + + + +IFN FRMSIN,[ + +;HERE TO SET UP FOR .FOO ..FOO OR. + +DOT1: PUSH P,FF ;SAVE FLAGS + PUSHJ P,NXTCH1 ;GOBBLE A NEW CHARACTER + POP P,FF ;RESTORE FLAGS + TRO FF,FRSDOT ;SET FLAG IN CASE + CAIN B,NUMCOD ;SKIP IF NOT NUMERIC + JRST CHCK.1 ;NUMERIC, COULD BE FLONUM + +; CODE TO HANDLE ALL IMPLICIT CALLS I.E. QUOTE, LVAL, GVAL + + MOVSI B,TFORM ;LVAL + MOVE A,MQUOTE LVAL + SUB P,[2,,2] ;POP OFF BYTE POINTER AND GOBBLE CALL + POP TP,TP + SUB TP,[1,,1] ;REMOVE TP JUNK + JRST IMPCA1 + +GLOSEG: SKIPA B,$TSEG ;SEG CALL TO GVAL +GLOVAL: MOVSI B,TFORM ;FORM CALL TO SAME + MOVE A,MQUOTE GVAL + JRST IMPCAL + +QUOSEG: SKIPA B,$TSEG ;SEG CALL TO QUOTE +QUOTIT: MOVSI B,TFORM + MOVE A,MQUOTE QUOTE + JRST IMPCAL + +SEGDOT: MOVSI B,TSEG ;SEG CALL TO LVAL + MOVE A,MQUOTE LVAL +IMPCAL: PUSHJ P,LSTCHR ;FLUSH LAST CHAR EXCEPT +IMPCA1: PUSH TP,$TATOM ;FOR .FOO FLAVOR + PUSH TP,A ;PUSH ARGS + PUSH P,B ;SAVE TYPE + PUSHJ P,IREAD1 ;READ + JRST USENIL ; IF NO ARG, USE NIL +IMPCA2: PUSH TP,C + PUSH TP,D + MOVE C,A ; GET READ THING + MOVE D,B + PUSHJ P,INCONS ; CONS TO NIL + MOVEI E,(B) ; PREPARE TON CONS ON +POPARE: POP TP,D ; GET ATOM BACK + POP TP,C + EXCH C,-1(TP) ; SAVE THAT COMMENT + EXCH D,(TP) + PUSHJ P,ICONS + POP P,A ;GET FINAL TYPE + JRST RET13 ;AND RETURN + + +USENIL: PUSH TP,C + PUSH TP,D + SKIPL A,5(TB) ; RESTOR LAST CHR + MOVEI A,5(TB)-LSTCH ;NO CHANNEL, POINT AT SLOT + MOVEM B,LSTCH(A) + MOVEI E,0 + JRST POPARE + +;HERE AFTER READING ATOM TO CALL VALUE + +.SET: SUB P,[1,,1] ;FLUSH GOBBLE CALL + PUSH P,$TFORM ;GET WINNING TYPE + MOVE E,(P) + PUSHJ P,RETC ; CHECK FOR POSSIBLE COMMENT + PUSH TP,$TATOM + PUSH TP,MQUOTE LVAL + JRST IMPCA2 ;GO CONS LIST + +] + +;HERE TO CHECK FOR "E" FLAVOR OF EXPONENT + +CHECKE: CAIN A,"* ; CHECK FOR FINAL * + JRST SYMB4 + TRNN FF,EFLG ;HAS ONE BEEN SEEN + CAIE B,NONSPC ;IF NOT, IS THIS ONE + JRST SYMB ;NO, ENTER AS SYMBOL KILL NUMERIC WIN + + TRNN FF,NUMWIN ;HAVE DIGITS BEEN SEEN? + JRST SYMB ;NO, NOT A NUMBER + MOVE B,(TP) ;GET POINTER TO TEMPS + HRLM FF,ENUM(B) ;SAVE FLAGS + HRRI FF,DECFRC+DOTSEN+EFLG ;SET NEW FLAGS + JRST SYMB3 ;ENTER SYMBOL + + +SYMB4: TRZN FF,OCTSTR + JRST SYMB + TRZN FF,OCTWIN ; ALREADY WON? + TROA FF,OCTWIN ; IF NOT DO IT NOW + JRST SYMB + JRST SYMB2 + +;HERE ON READING CHARACTER STRING + +ADSTRN: SKIPL A ; EOF? + CAIN B,MANYT ;TERMINATE? + JRST DONEG ;YES + CAIE B,CSTYP + JRST SYMB2 ;NO JUST INSERT IT +ADSTN1: PUSHJ P,LSTCHR ;DON'T REREAD """ + + +;HERE TO FINISH THIS CROCK + +DONEG: TRNN FF,OCTSTR ; IF START OCTAL BUT NOT FINISH.. + TRNN FF,NUMWIN ;HAVE DIGITS BEEN SEEN? + TRO FF,NOTNUM ;NO,SET NOT NUMBER FLAG + SKIPGE C ; SKIP IF STUFF IN TOP WORD + SUB P,[1,,1] + PUSH P,D + TRNN FF,NOTNUM ;NUMERIC? + JRST NUMHAK ;IS NUMERIC, GO TO IT + +IFN FRMSIN,[ + MOVE A,(TP) ;GET POINTER TO TEMPS + MOVEM FF,NDIGS(A) ;USE TO HOLD FLAGS +] + TRNE FF,INSTRN ;ARE WE BUILDING A STRING + JRST MAKSTR ;YES, GO COMPLETE SAME +LOOPAT: PUSHJ P,NXTCH ; CHECK FOR TRAILER + CAIN B,PATHTY ; PATH BEGINNER + JRST PATH0 ; YES, GO PROCESS + CAIN B,SPATYP ; SPACER? + PUSHJ P,SPACEQ ; CHECK FOR REAL SPACE + JRST PATH2 + PUSHJ P,LSTCHR ; FLUSH IT AND RETRY + JRST LOOPAT +PATH0: PUSHJ P,NXTCH1 ; READ FORCED NEXT + CAIE B,SPCTYP ; DO #FALSE () HACK + CAIN B,ESCTYP + JRST PATH4 + CAIL B,SPATYP ; SPACER? + JRST PATH3 ; YES, USE THE ROOT OBLIST +PATH4: PUSHJ P,NIREA1 ; READ NEXT ITEM + PUSHJ P,ERRPAR ; LOSER + CAME A,$TATOM ; ONLY ALLOW ATOMS + JRST BADPAT + + PUSH TP,A + PUSH TP,B + PUSH TP,A + PUSH TP,B + PUSH TP,$TATOM + PUSH TP,IMQUOTE OBLIST + MCALL 2,GET ; GET THE OBLIST + CAMN A,$TOBLS ; IF NOT OBLIST, MAKE ONE + JRST PATH6 + MCALL 1,MOBLIS ; MAKE ONE + JRST PATH1 + +PATH6: SUB TP,[2,,2] + JRST PATH1 + + +PATH3: MOVE B,ROOT+1(TVP) ; GET ROOT OBLIST + MOVSI A,TOBLS +PATH1: PUSHJ P,RLOOKU ; AND LOOK IT UP + +IFN FRMSIN,[ + MOVE C,(TP) ;SET TO REGOBBLE FLAGS + MOVE FF,NDIGS(C) +] + JRST FINID + + +SPACEQ: ANDI A,-1 + CAIE A,33 + CAIN A,400033 + POPJ P, + CAIE A,3 + AOS (P) + POPJ P, + +;HERE TO RAP UP CHAR STRING ITEM + +MAKSTR: MOVE C,D ;SETUP TO CALL CHMAK + PUSHJ P,CHMAK ;GO MAKE SAME + JRST FINID + + +NUMHAK: MOVE C,(TP) ;REGOBBLETEMP POINTER + POP P,D ;POP OFF STACK TOP + ADDI D,4 + IDIVI D,5 + HRLI D,(D) ;TOO BOTH HALVES + SUB P,D ;REMOVE CHAR STRING + TRNE FF,FLONUM+EFLG ;IS IT A FLOATING POINT NUMBER + JRST FLOATIT ;YES, GO MAKE IT WIN + MOVE B,CNUM(C) + TRNE FF,DECFRC + MOVE B,DNUM(C) ;GRAB FIXED GOODIE + TRNE FF,OCTWIN ; SKIP IF NOT OCTAL + MOVE B,ONUM(C) ; USE OCTAL VALUE + +FINID2: MOVSI A,TFIX ;SAY FIXED POINT +FINID1: TRNE FF,NEGF ;NEGATE + MOVNS B ;YES +FINID: POP TP,TP ;RESTORE OLD TP + SUB TP,[1,,1] ;FINISH HACK +IFN FRMSIN,[ + TRNE FF,FRSDOT ;DID . START IT + JRST .SET ;YES, GO HACK +] + POPJ P, ;AND RETURN + + + + +PATH2: MOVE B,IMQUOTE OBLIST + PUSHJ P,IDVAL + JRST PATH1 + +BADPAT: PUSH TP,$TATOM + PUSH TP,EQUOTE NON-ATOMIC-OBLIST-NAME + JRST CALER1 + + +FLOATIT: + JFCL 17,.+1 ;CLEAR ALL ARITHMETIC FLAGS + + TRNE FF,EFLG ;"E" SEEN? + JRST EXPDO ;YES, DO EXPONENT + MOVE D,NDIGS(C) ;GET IMPLICIT EXPONENT + +FLOATE: MOVE A,DNUM(C) ;GET DECIMAL NUMBER + IDIVI A,400000 ;SPLIT + FSC A,254 ;CONVERT MOST SIGNIFICANT + FSC B,233 ; AND LEAST SIGNIFICANT + FADR B,A ;COMBINE + + MOVM A,D ;GET MAGNITUDE OF EXPONENT + CAILE A,37. ;HOW BIG? + JRST FOOR ;TOO BIG-FLOATING OUT OF RANGE + JUMPGE D,FLOAT1 ;JUMP IF EXPONENT POSITIVE + FDVR B,TENTAB(A) ;DIVIDE BY TEN TO THE EXPONENT + JRST SETFLO + +FLOAT1: FMPR B,TENTAB(A) ;SCALE UP + +SETFLO: JFCL 10,FOOR ;FLOATING OUT OF RANGE ON OVERFLOW + MOVSI A,TFLOAT +IFN FRMSIN, TRZ FF,FRSDOT ;FLOATING NUMBER NOT VALUE + JRST FINID1 + +EXPDO: + HRRZ D,ENUM(C) ;GET EXPONENT + TRNE FF,NEGF ;IS EXPONENT NEGATIVE? + MOVNS D ;YES + ADD D,NDIGS(C) ;ADD IMPLICIT EXPONENT + HLR FF,ENUM(C) ;RESTORE FLAGS + JUMPL D,FLOATE ;FLOATING IF EXPONENT NEGATIVE + CAIG D,10. ;OR IF EXPONENT TOO LARGE + TRNE FF,FLONUM ;OR IF FLAG SET + JRST FLOATE + MOVE B,DNUM(C) ; + IMUL B,ITENTB(D) + JFCL 10,FLOATE ;IF OVERFLOW, MAKE FLOATING + JRST FINID2 ;GO MAKE FIXED NUMBER + +; HERE TO READ ONE CHARACTER FOR USER. + +CREDC1: SUBM M,(P) + PUSH TP,A + PUSH TP,B + PUSHJ P,IREADC + JFCL + JRST MPOPJ + +CNXTC1: SUBM M,(P) + PUSH TP,A + PUSH TP,B + PUSHJ P,INXTRD + JFCL + JRST MPOPJ + +CREADC: SUBM M,(P) + PUSH TP,A + PUSH TP,B + PUSHJ P,IREADC + JRST RMPOPJ + SOS (P) + JRST RMPOPJ + +CNXTCH: SUBM M,(P) + PUSH TP,A + PUSH TP,B + PUSHJ P,INXTRD + JRST RMPOPJ + SOS (P) +RMPOPJ: SUB TP,[2,,2] + JRST MPOPJ + +INXTRD: TDZA E,E +IREADC: MOVEI E,1 + MOVE B,(TP) ; CHANNEL + HRRZ A,-4(B) ; GET BLESS BITS + TRNE A,C.BIN + TRNE A,C.BUF + JRST .+3 + PUSHJ P,GRB + HRRZ A,-4(B) + TRC A,C.OPN+C.READ + TRNE A,C.OPN+C.READ + JRST BADCHN + SKIPN A,LSTCH(B) + PUSHJ P,RXCT + MOVEM A,LSTCH(B) ; SAVE CHAR + CAMN A,[-1] ; SPECIAL PSEUDO TTY HACK? + JRST PSEUDO ; YES, RET AS FIX + TRZN A,400000 ; UNDO ! HACK + JRST NOEXCL + SKIPE E + MOVEM A,LSTCH(B) + MOVEI A,"! ; RETURN AN ! +NOEXC1: SKIPGE B,A ; CHECK EOF + SOS (P) ; DO EOF RETURN + MOVE B,A ; CHAR TO B + MOVSI A,TCHRS +PSEUD1: AOS (P) + POPJ P, + +PSEUDO: SKIPE E + PUSHJ P,LSTCH2 + MOVE B,A + MOVSI A,TFIX + JRST PSEUD1 + +NOEXCL: SKIPE E + PUSHJ P,LSTCH2 + JRST NOEXC1 + +; READER ERRORS COME HERE + +ERRPAR: PUSH TP,$TCHRS ;DO THE OFFENDER + PUSH TP,B + PUSH TP,$TCHRS + PUSH TP,[40] ;SPACE + PUSH TP,$TCHSTR + PUSH TP,CHQUOT UNEXPECTED + JRST MISMA1 + +;COMPLAIN ABOUT MISMATCHED CLOSINGS + +MISMAB: SKIPA A,["]] +MISMAT: MOVE A,-1(P) ;GOBBLE THE DESIRED CHARACTER + JUMPE B,CPOPJ ;IGNORE UNIVERSAL CLOSE + PUSH TP,$TCHRS + PUSH TP,B + PUSH TP,$TCHSTR + PUSH TP,CHQUOT [ INSTEAD-OF ] + PUSH TP,$TCHRS + PUSH TP,A +MISMA1: MCALL 3,STRING + PUSH TP,$TATOM + PUSH TP,EQUOTE READER-SYNTAX-ERROR-ERRET-ANYTHING-TO-GO-ON + PUSH TP,A + PUSH TP,B + PUSH TP,$TATOM + PUSH TP,MQUOTE READ + MCALL 3,ERROR +CPOPJ: POPJ P, + +; HERE ON BAD INPUT CHARACTER + +BADCHR: PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-ASCII-CHARACTER + JRST CALER1 + +; HERE ON YUCKY PARSE TABLE + +BADPTB: PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-MACRO-TABLE + JRST CALER1 + +BDPSTR: PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-PARSE-STRING + JRST CALER1 + +ILLSQG: PUSHJ P,LSTCHR ; DON'T MESS WITH IT AGAIN + PUSH TP,$TATOM + PUSH TP,EQUOTE BAD-USE-OF-SQUIGGLY-BRACKETS + JRST CALER1 + + +;FLOATING POINT NUMBER TOO LARGE OR SMALL +FOOR: PUSH TP,$TATOM + PUSH TP,EQUOTE NUMBER-OUT-OF-RANGE + JRST CALER1 + + +NILSXP: 0,,0 + +LSTCHR: PUSH P,B + SKIPL B,5(TB) ;GET CHANNEL + JRST LSTCH1 ;NO CHANNEL, POINT AT SLOT + PUSHJ P,LSTCH2 + POP P,B + POPJ P, + +LSTCH2: SKIPE LSTCH(B) ;ARE WE REALLY FLUSHING A REUSE CHARACTER ? + PUSHJ P,CNTACC + SETZM LSTCH(B) + POPJ P, + +LSTCH1: SETZM 5(TB) ;ZERO THE LETTER AND RETURN + POP P,B + POPJ P, + +CNTACC: PUSH P,A + HRRZ A,-4(B) ; GET BITS + TRNE A,C.BIN + JRST CNTBIN + AOS ACCESS(B) +CNTDON: POP P,A + POPJ P, + +CNTBIN: AOS A,ACCESS-1(B) + CAMN A,[TFIX,,1] + AOS ACCESS(B) + CAMN A,[TFIX,,5] + HLLZS ACCESS-1(B) + JRST CNTDON + + +;TABLE OF NAMES OF ARGS AND ALLOWED TYPES + +ARGS: + IRP A,,[[[CAIN C,TUNBOU]],[[CAIE C,TCHAN],INCHAN],[[PUSHJ P,CHOBL],OBLIST]] + IRP B,C,[A] + B + IFSN [C],IMQUOTE C + .ISTOP + TERMIN + TERMIN + +CHOBL: CAIE C,TLIST ;A LIST OR AN OBLIST + CAIN C,TOBLS + AOS (P) + POPJ P, + +END + + TITLE SAVE AND RESTORE STATE OF A MUDDLE + +RELOCATABLE + +.INSRT DSK:MUDDLE > + +SYSQ + +IFE ITS,[ +IF1,[ +.INSRT STENEX > +EXPUNGE SAVE +] +] + +.GLOBAL MOPEN,MIOT,MCLOSE,MUDSTR,SWAP,STRTO6,GCPDL,RGPRS +.GLOBAL CHNL0,CHNL1,REOPN,AGC,SWAPIN,MASK1,MASK2,IPCBLS +.GLOBAL P.CORE,P.TOP,SGSNAM,%RUNAM,%RJNAM,INTINT,CLOSAL,TTYOPE +.GLOBAL NOTTY,PURCLN,6TOCHS,DISXTR,IDVAL1,N.CHNS + +MFUNCTION FSAVE,SUBR + + ENTRY + + PUSH P,. ; SAY WE ARE FAST SAVER + JRST SAVE1 + +MFUNCTION SAVE,SUBR + + ENTRY + + PUSH P,[0] ; SAY WE ARE OLD SLOW SAVE +SAVE1: SKIPG MUDSTR+2 ; DON'T SAVE FROM EXPERIMENTAL MUDDLE + JRST EXPVRS + PUSH P,[0] ; GC OR NOT? +IFE ITS,[ + MOVE B,[400600,,] + MOVE C,[440000,,100000] +] + PUSHJ P,GTFNM ; GET THE FILE NAME ONTO P + JRST .+2 + JRST SAVEON + JUMPGE AB,TMA ; TOO MUCH STRING + GETYP 0,(AB) ; WHAT IS ARG + CAMGE AB,[-3,,0] ; NOT TOO MANY + JRST TMA + CAIN 0,TFALSE +IFN ITS, SETOM -4(P) ; GC FLAG +IFE ITS, SETOM (P) +SAVEON: +IFN ITS,[ + MOVSI A,7 ; IMAGE BLOCK OUT + HRR A,-2(P) ; DEVICE + PUSH P,A + PUSH P,[SIXBIT /_MUDS_/] + PUSH P,[SIXBIT />/] + MOVEI A,-2(P) ; POINT TO BLOCK + PUSHJ P,MOPEN ; ATTEMPT TO OPEN + JRST CANTOP + SUB P,[3,,3] ; FLUSH OPEN BLOCK + PUSH P,-4(P) ; GC FLAG TO TOP OF STACK +] + EXCH A,(P) ; CHAN TO STACK GC TO A + JUMPL A,.+2 + MCALL 0,GC + +; NOW GET VERSION OF MUDDLE FOR COMPARISON + + MOVE A,MUDSTR+2 ; GET # + MOVEI B,177 ; CHANGE ALL RUBOUT CHARACTERS + MOVEI C,40 ; ----- TO SPACES + PUSHJ P,HACKV + + PUSHJ P,WRDOUT + MOVEI A,0 ; WRITE ZERO IF FAST +IFN ITS, SKIPE -6(P) +IFE ITS, SKIPE -1(P) + PUSHJ P,WRDOUT + MOVE A,VECTOP ; CORE REQUIREMENTS FOR THIS SAVED MUDDLE + PUSHJ P,WRDOUT + +IFN ITS,[ + SETZB A,B ; FIRST, ALL INTS OFF + .SETM2 A, + SKIPE DISXTR ; IF HAVE DISPLAY, CLOSE IT + .DSTOP ; STOP THE E&S IF RUNNING + +; IF FAST SAVE JUMP OFF HERE + + SKIPE -6(P) + JRST FSAVE1 + +; NOW DUMP OUT GC SPACE + MOVEI A,E+1 ; ADDRESS OF FIRST NON-SCRATCH WORD + POP P,0 ; CHAN TO 0 + LSH 0,23. ; POSITION + IOR 0,[.IOT A] +] + +IFE ITS,[ + MOVEI A,400000 ; FOR THIS PROCESS + DIR ; TURN OFF INT SYSTEM + +; IF FAST, LEAVE HERE + + SKIPE -1(P) + JRST FSAVE1 + +; NOW DUMP OUT GC SPACE + POP P,0 ; RESTORE JFN + MOVE A,[-,,E] ; NUMBER OF ACS TO GO + PUSH P,(A) + AOBJN A,.-1 + MOVE A,0 + MOVE B,P + BOUT + MOVEI A,20 ; START AT LOCN 20 +] +DMPLP1: MOVEI B,(A) ; POINT TO START OF STUFF + SUB B,VECTOP ; GET BLOCK LENGTH + MOVSI B,(B) + HRRI B,(A) ; HAVE IOT POINTER + SKIPL B ; SKIP IF OK AOBJN POINTER + HRLI B,400000 ; OTHER WISE AS MUCH AS POSSIBLE + +; MAIN NON-ZERO DUMPING LOOP + +DMPLP: SKIPN C,(B) ; FIND FIRST NON-ZERO + AOBJN B,.-1 + JUMPGE B,DMPDON ; NO MORE TO SCAN + +DMP4: MOVEI E,(B) ; FOUND ONE, SAVE POINTER TO IT +DMP3: MOVSI D,-5 ; DUPLICATE COUNTER SETUP + +DMP1: CAMN C,(B) ; IS NEXT SAME AS THIS? + JRST CNTDUP ; COUNT DUPS + MOVSI D,-5 ; RESET COUNTER + SKIPE C,(B) ; SEARCH FOR ZERO +DMP5: AOBJN B,DMP1 ; COUNT AND GO + JUMPGE B,DMP2 ; JUMP IF BLOCK FINISHED + + AOBJP B,DMP2 ; CHECK FOR LONE ZERO + SKIPE C,(B) + JRST DMP1 ; LONE ZERO, DONT END BLOCK + +DMP2: MOVEI D,(E) ; START COMPUTING OUTPUT IOT + SUBI D,(B) ; D=> -LNTH OF BLOCK + HRLI E,(D) ; E=> AOBJN PNTR TO OUTPUT +IFN ITS,[ + HRROI A,E ; MAKE AN IOT POINTER TO IT + XCT 0 ; WRITE IT + MOVE A,E ; NOW FOR THE BLOCK + XCT 0 ; ZAP!, OUT IT GOES +] +IFE ITS,[ + EXCH E,B ; AOBJN TO B + MOVE A,0 ; JFN TO A + BOUT ; WRITE IT + MOVE D,B ; SAVE POINTER + HRLI B,444400 ; BYTPE POINTER + HLRE C,D ; # OF BYTES + SOUT +] +; NOW COMPUTE A CKS + +IFN ITS,[ + MOVE D,E ; FIRST WORD OF CKS + ROT E,1 + ADD E,(D) + AOBJN D,.-2 ; COMP CKS + HRROI A,E + XCT 0 ; WRITE OUT THE CKS +] +IFE ITS,[ + MOVE B,D + ROT B,1 + ADD B,(D) + AOBJN D,.-2 + BOUT + MOVE B,E ; MAIN POINTER BACK +] + +DMP7: JUMPL B,DMPLP ; MORE TO DO? +DMPDON: SUB B,VECTOP ; DONE? + JUMPGE B,DMPDN1 ; YES, LEAVE +IFN ITS, MOVEI A,400000+PVP ; POINT TO NEXT WORD TO GO +IFE ITS, MOVEI A,400020 + JRST DMPLP1 +IFN ITS,[ +DMPDN1: HRROI A,[-1] + XCT 0 ; EOF +DMPDN2: SETZB A,B ; SET UP RENAME WHILE OPEN ETC. + MOVE E,(P) + MOVE D,-1(P) + LDB C,[270400,,0] ; GET CHANNEL + .FDELE A ; RENAME IT + FATAL SAVE RENAME FAILED + XOR 0,[<.IOT A>#<.CLOSE>] ; CHANGE TO A CLOSE + XCT 0 + + MOVE A,MASK1 ; TURN INTS BACK ON + MOVE B,MASK2 + .SETM2 A, + SKIPE DISXTR ; SKIP IF NO E&S + .DCONTINUE ; RESTART THE E&S IF WE HAVE IT +] + +IFE ITS,[ +DMPDN1: MOVNI B,1 + MOVE A,0 ; WRITE EOF + BOUT +DMPDN2: MOVE A,0 + CLOSF + FATAL CANT CLOSE SAVE FILE + CIS ; CLEAR IT SYSTEM + MOVEI A,400000 + EIR ; AND RE-ENABLE +] + +SDONE: MOVE A,$TCHSTR + MOVE B,CHQUOTE SAVED + JRST FINIS + +; SCAN FOR MANY OCCURENCES OF THE SAME THING + +CNTDUP: AOBJN D,DMP5 ; 4 IN A ROW YET + CAIN E,-4(B) ; ANY PARTIAL BLOCK? + JRST DMP6 ; NO, DUMP THESE + SUB B,[4,,4] ; BACK UP POINTER + JRST DMP2 +DMP6: CAMN C,(B) ; FIND ALL CONTIG + AOBJN B,.-1 + MOVEI D,(B) ; COMPUTE COUNT + SUBI D,(E) + MOVSI D,(D) + HRRI D,(E) ; HEADER +IFN ITS,[ + HRROI A,D + XCT 0 + HRROI A,C ; WRITE THE WORD + XCT 0 +] +IFE ITS,[ + MOVE A,0 + EXCH D,B + BOUT + MOVE B,C + BOUT + MOVE B,D +] JRST DMP7 + +; HERE TO WRITE OUT FAST SAVE FILE + +FSAVE1: MOVE A,PARTOP ; DONT WRITE OUT "HOLE" + ADDI A,1777 + ANDCMI A,1777 + MOVEI E,(A) + PUSHJ P,WRDOUT + MOVE A,VECBOT + ANDCMI A,1777 + HRLI E,(A) + PUSHJ P,WRDOUT + POP P,0 ; CHANNEL TO 0 +IFN ITS,[ + ASH 0,23. ; TO AC FIELS + IOR 0,[.IOT A] + MOVEI A,5 ; START AT WORD 5 +] +IFE ITS,[ + MOVE A,[-,,E] + PUSH P,(A) + AOBJN A,.-1 + MOVE A,0 + MOVE B,P ; WRITE OUT P FOR WIINAGE + BOUT + MOVE B,[444400,,20] + MOVNI C,20-6 + SOUT ; MAKE PAGE BOUNDARIES WIN + MOVEI A,20 ; START AT 20 +] + MOVEI B,(E) ; PARTOP TO B + PUSHJ P,FOUT ; WRITE OUT UP TO PAIR TOP + HLRZ A,E ; VECBOT TO A + MOVE B,VECTOP ; AND THE REST + PUSHJ P,FOUT + JRST DMPDN2 + +IFN ITS,[ +FOUT: MOVEI D,(A) ; SAVE START + SUB A,B ; COMPUTE LH OF IOT PNTR + MOVSI A,(A) + SKIPL A ; IF + MEANS GROSS CORE SIZE + MOVSI A,400000 ; USE BIGGEST + HRRI A,(D) + XCT 0 ; ZAP, OUT IT GOES + CAMGE A,B ; SKIP IF ALL WENT + JRST FOUT ; DO THE REST + POPJ P, ; GO CLOSE FILE +] +IFE ITS,[ +FOUT: MOVEI C,(A) + SUBI C,(B) ; # OF BYTES TP C + MOVEI B,(A) ; START TO B + HRLI B,444400 + MOVE A,0 + SOUT ; WRITE IT OUT + POPJ P, +] + + +; HERE TO ATTEMPT TO RESTORE A SAVED STATE + +MFUNCTION RESTORE,SUBR + + ENTRY + SKIPG MUDSTR+2 ; DON'T RESTORE FROM EXPERIMENTAL MUDDLE + JRST EXPVRS +IFE ITS,[ + MOVE B,[100600,,] + MOVE C,[440000,,240000] +] + PUSHJ P,GTFNM + JRST TMA +IFN ITS,[ + MOVEI A,6 ; READ/IMAGE/BLOCK + HRLM A,-2(P) + MOVEI A,-2(P) + PUSHJ P,MOPEN ; OPEN THE LOSER + JRST FNF + SUB P,[4,,4] ; REMOVE OPEN BLOCK + + PUSH P,A ; SAVE CHANNEL + PUSHJ P,SGSNAM ; SAVE SNAME IN SYSTEM +] +IFE ITS, PUSH P,A ; SAVE JFN + PUSHJ P,WRDIN ; READ MUDDLE VERSION + MOVEI B,40 ; CHANGE ALL SPACES + MOVEI C,177 ; ----- TO RUBOUT CHARACTERS + PUSHJ P,HACKV + CAME A,MUDSTR+2 ; AGREE ? + JRST BADVRS + +IFN ITS, MCALL 0,IPCOFF ; CLOSE ALL IPC CHANS + PUSHJ P,CLOSAL ; CLOSE CHANNELS +IFN ITS,[ + SETZB A,B ; KILL ALL POSSIBLE INTERRUPTION + .SETM2 A, +] +IFE ITS,[ + MOVEI A,400000 ; DISABLE INTS + DIR ; INTS OFF +] + PUSHJ P,PURCLN ; DONT KEEP PURE SHAREDNESS + POP P,A ; RETRIEVE CHANNEL + MOVE P,GCPDL + PUSH P,A ; AND SAVE IT ON A GOOD PDL + PUSHJ P,WRDIN ; READ A WORD (VECTOP) OR 0==>FAST I.E. MAP RESTORE + JUMPE A,FASTR + MOVEM A,VECTOP ; SAVE FOR LATER + ASH A,-10. ; TO BLOCKS + MOVE C,A ; SAVE A COPY + ADDI A,1 ; ROOM FOR GC PDL + PUSHJ P,P.CORE + PUSHJ P,NOCORE ; LOSE,LOSE, LOSE + +; NOW READY TO READ IN GC SPACE + POP P,0 ; GET CHAN + MOVEI E+1,0 + MOVE B,[E+1,,E+2] ; BLT SETUP TO ZERO CORE + MOVE E,NOTTY + MOVE A,VECTOP + BLT B,-1+2000(A) ; THE WHOLE THING? +IFN ITS,[ + LSH 0,23. + IOR 0,[.IOT A] ; BUILD IOT +] +IFE ITS,[ + MOVE A,0 + BIN ; READ IN NEW "P" + MOVE P,B +] +LDLP: +IFN ITS,[ + HRROI A,B ; READ A HDR + XCT 0 + JUMPL A,LD1 ; DONE +] +IFE ITS,[ + MOVE A,0 + BIN ; HDR TO B +] + CAMN B,[-1] + JRST LD1 + + JUMPGE B,LDDUPS ; JUMP IF LOADING DUPS +IFN ITS,[ + MOVE A,B ; TO IOTER + XCT 0 + + MOVE C,B ; COMP CKS + ROT C,1 + ADD C,(B) + AOBJN B,.-2 ; COMP AWAY + + HRROI A,D ; GET FILES CKS + XCT 0 + CAME D,C ; CHECK + FATAL RESTORE CHECKSUM ERROR + JRST LDLP ; LOAD MORE +] +IFE ITS,[ + MOVE D,B ; SAVE + HLRE C,B + HRLI B,444400 + MOVE A,0 + SIN ; READ IN A BUNCH + + MOVE B,D + ROT D,1 + ADD D,(B) + AOBJN B,.-2 + + BIN ; READ STORED CKS + CAME D,B + FATAL RESTORE CHECKSUM ERROR + JRST LDLP +] + +LDDUPS: +IFN ITS,[ + HRROI A,(B) ; READ 1ST IN PLACE + XCT 0 +] +IFE ITS,[ + MOVE D,B ; SAVE HDR + BIN ; READ WORD OF INTEREST + MOVEM B,(D) + MOVE B,D +] + HLRZ A,B ; # TO A + HRLI B,(B) ; BUILD A BLT PONTER + ADDI B,1 + ADDI A,-2(B) + BLT B,(A) + JRST LDLP + +LD1: +IFN ITS,[ + XOR 0,[<.IOT A>#<.CLOSE>] ; CHANGE TO CLOSE + XCT 0 ; AND DO IT +] +IFE ITS,[ + MOVE A,0 + CLOSF + JFCL +FASTR1: MOVEI A,P-1 + MOVEI B,P-1-E + POP P,(A) + SUBI A,1 + SOJG B,.-2 +] + +IFN ITS,[ +FASTR1: +] + MOVE A,VECTOP ; REAL CORE TOP + ADDI A,2000 ; ROOM FOR GC PDL + MOVEM A,P.TOP + MOVEM E,NOTTY ; SAVE TTY FLAG + PUSHJ P,PURCLN ; IN CASE RESTORED THING HAD PURE STUFF + PUSHJ P,INTINT ; USE NEW INTRRRUPTS + +; NOW CYCLE THROUGH CHANNELS + MOVE C,TVP + ADD C,[CHNL1+2,,CHNL1+2] ; POINT TO REAL CHANNELS SLOTS + PUSH TP,$TVEC + PUSH TP,C + PUSH P,[N.CHNS] + +CHNLP: SKIPN B,-1(C) ; GET CHANNEL + JRST NXTCHN + PUSHJ P,REOPN + PUSHJ P,CHNLOS + MOVE C,(TP) ; GET POINTER +NXTCHN: ADD C,[2,,2] ; AND BUMP + MOVEM C,(TP) + SOSE (P) + JRST CHNLP + + SKIPN C,CHNL0(TVP)+1 ; ANY PSUEDO CHANNELS + JRST RDONE ; NO, JUST GO AWAY + MOVSI A,TLIST ; YES, REOPEN THEM + MOVEM A,(TP)-1 +CHNLP1: MOVEM C,(TP) ; SAVE POINTER + SKIPE B,(C)+1 ; GET CHANNEL + PUSHJ P,REOPN + PUSHJ P,CHNLO1 + MOVE C,(TP) ; GOBBLE POINTER + HRRZ C,(C) ; REST LIST OF PSUEDO CHANNELS + JUMPN C,CHNLP1 + +RDONE: SUB TP,[2,,2] + SUB P,[1,,1] + PUSHJ P,TTYOPE +IFN ITS,[ + PUSHJ P,IPCBLS ;BLESS ALL THE IPC CHANNELS + PUSHJ P,SGSNAM ; GET SNAME + SKIPN A + .SUSET [.RSNAM,,A] + PUSHJ P,6TOCHS ; TO STRING + PUSH TP,A + PUSH TP,B + MCALL 1,SNAME +] + PUSHJ P,%RUNAM + PUSHJ P,%RJNAM + MOVE A,$TCHSTR + MOVE B,CHQUOTE RESTORED + JRST FINIS + +FASTR: +IFN ITS,[ + PUSHJ P,WRDIN ; GET CORE TOP + ASH A,-10. ; TO PAGES + MOVEI B,(A) ; SAVE + ADDI A,1 ; ROOM FOR GC PDL + PUSHJ P,P.CORE ; GET ALL CORE + PUSHJ P,NOCORE ; LOSE RETURN + PUSHJ P,WRDIN ; GET PARTOP + ASH A,-10. ; TO PAGES + MOVEI E,(A) + PUSHJ P,WRDIN ; NOW GET VECBOT + ASH A,-10. ; TO PAGES + EXCH A,E ; AND SAVE IN E + MOVNS A + MOVSI A,(A) ; TO PAGE AOBJN + MOVE C,A ; COPY OF POINTER + MOVE 0,NOTTY ; SAVE NOTTY FLAG AROUND + MOVE D,(P) ; CHANNEL + DOTCAL CORBLK,[[1000,,104000],[1000,,-1],A,D,C] + FATAL CORBLK ON RESTORE LOSSAGE + SUBM E,B ; AOBJN LH TO E + HRLI E,(B) ; AOBJN TO CORE + HRLI C,(B) ; AND TO DISK + DOTCAL CORBLK,[[1000,,104000],[1000,,-1],E,D,C] + FATAL CORBLK ON RESTORE LOSSAGE + MOVSI A,(D) ; CHANNEL BACK + ASH A,5 + MOVEI B,E ; WHERE TO STRAT IN FILE + IOR A,[.ACCESS B] + XCT A ; ACCESS TO RIGHT ACS + XOR A,[<.IOT B>#<.ACCESS B>] + MOVE B,[D-P-1,,E] + XCT A ; GET ACS + MOVE E,0 ; NO TTY FLAG BACK + XOR A,[<.IOT B>#<.CLOSE>] + XCT A +] +IFE ITS,[ +FASTR: POP P,A ; JFN TO A + BIN ; CORE TOP TO B + MOVE E,B ; SAVE + BIN ; PARTOP + MOVE D,B + BIN ; VECBOT + MOVE C,B + BIN ; SAVED P + MOVE P,B + MOVE 0,NOTTY ; SAVE NOTTY FLAG AROUND + HRL E,C ; SAVE VECTOP + MOVSI A,(A) ; JFN TO LH + MOVSI B,400000 ; FOR ME + MOVSI C,120400 ; FLAGS + ASH D,-9. ; PAGES TO D + PMAP + ADDI A,1 + ADDI B,1 + SOJG D,.-3 + + ASH E,-9. ; E==> CORTOP PAGE,,VECBOT PAGE + HLR B,E ; B NOW READY + MOVEI D,(E) + SUBI D,(B) + PMAP + ADDI A,1 + ADDI B,1 + SOJG D,.-3 + + HLRZS A + CLOSF + FATAL CANT CLOSE RESTORE FILE + MOVE E,0 ; NOTTY TO E +] + MOVE A,PARTOP ; ZERO OUT NEW FREE + HRLI A,(A) + MOVE B,VECBOT + SETZM (A) + ADDI A,1 + BLT A,-1(B) ; ZAP...YOU'RE ZERO + JRST FASTR1 + + +; HERE TO GROCK FILE NAME FROM ARGS + +GTFNM: +IFN ITS,[ + PUSH TP,$TPDL + PUSH TP,P + + IRP A,,[DSK,MUDDLE,SAVE] + PUSH P,[SIXBIT /A/] + TERMIN + PUSHJ P,SGSNAM ; GET SNAME + PUSH P,A ; SAVE SNAME + + JUMPGE AB,GTFNM1 + PUSHJ P,RGPRS ; PARSE THESE ARGS + JRST .+2 +GTFNM1: AOS -4(P) ; SKIP RETURN + + POP P,A ; GET SNAME + .SUSET [.SSNAM,,A] + MOVE A,-3(P) ; GET RET ADDR + HLRZS -2(P) ; FIXUP DEVICE SPEC + SUB TP,[2,,2] + JRST (A) + +; HERE TOO OUT 1 WORD + +WRDOUT: PUSH P,B + PUSH P,A + HRROI B,(P) ; POINT AT C(A) + MOVE A,-3(P) ; CHANNEL + PUSHJ P,MIOT ;WRITE IT +POPJB: POP P,A + POP P,B + POPJ P, + +; HERE TO READ 1 WORD +WRDIN==WRDOUT +] +IFE ITS,[ + PUSH P,C + PUSH P,B + MOVE B,IMQUOTE SNM + PUSHJ P,IDVAL1 + GETYP 0,A + CAIN 0,TUNBOU + MOVEI B,0 + MOVEI A,(P) + PUSH P,[377777,,377777] + PUSH P,[-1,,[ASCIZ /DSK/]] + PUSH P,B + PUSH P,[-1,,[ASCIZ /MUDDLE/]] + PUSH P,[-1,,[ASCIZ /SAVE/]] + PUSH P,[0] + PUSH P,[0] + PUSH P,[77] ; USE AN OBSCURE JFN IF POSSIBLE + MOVE B,1(AB) + GTJFN + JRST FNF + SUB P,[9.,,9.] + POP P,B + OPENF + JRST FNF + ADD AB,[2,,2] + SKIPL AB + AOS (P) + POPJ P, + +WRDIN: PUSH P,B + MOVE A,-2(P) ; JFN TO A + BIN + MOVE A,B + POP P,B + POPJ P, + +WRDOUT: PUSH P,B + MOVE B,-2(P) + EXCH A,B + BOUT + EXCH A,B + POP P,B + POPJ P, +] + + +;REPLACE ALL OCCURANCES OF CHARACTER (B) TO CHARACTER (C) IN A +HACKV: PUSH P,D + PUSH P,E + MOVE D,[440700,,A] + MOVEI E,5 +HACKV1: ILDB 0,D + CAIN 0,(B) ; MATCH ? + DPB C,D ; YES, CLOBBER + SOJG E,HACKV1 + POP P,E + POP P,D + POPJ P, + + +CANTOP: PUSH TP,$TATOM + PUSH TP,EQUOTE CANT-OPEN-OUTPUT-FILE + JRST CALER1 + +FNF: PUSH TP,$TATOM + PUSH TP,EQUOTE FILE-NOT-FOUND + JRST CALER1 + +BADVRS: PUSH TP,$TATOM + PUSH TP,EQUOTE MUDDLE-VERSIONS-DIFFER + JRST CALER1 + +EXPVRS: PUSH TP,$TATOM + PUSH TP,EQUOTE EXPERIMENTAL-MUDDLE-VERSION + JRST CALER1 + +CHNLO1: MOVE C,(TP) + SETZM 1(C) + JRST CHNLO2 + +CHNLOS: MOVE C,(TP) + SETZM (C)-1 +CHNLO2: MOVEI B,[ASCIZ / +CHANNEL-NOT-RESTORED +/] + JRST MSGTYP" + + +NOCORE: PUSH P,A + PUSH P,B + MOVEI B,[ASCIZ / +WAIT, CORE NOT YET HERE +/] + PUSHJ P,MSGTYP" + MOVE A,(P) ; RESTORE BLOCKS NEEDED + MOVEI B,1 + .SLEEP B, + PUSHJ P,P.CORE + JRST .-4 + MOVEI B,[ASCIZ / +CORE ARRIVED +/] + PUSHJ P,MSGTYP + POP P,B + POP P,A + POPJ P, +END + TITLE SPECS FOR MUDDLE + +RELOCA + +MAIN==1 +.GLOBAL TYPVLC,PBASE,TYPBOT,MAINPR,PTIME,IDPROC,ROOT,TTICHN,TTOCHN,TYPVEC +.GLOBAL %UNAM,%JNAM,NOTTY,GCHAPN,INTHLD,PURBOT,PURTOP,N.CHNS,SPCCHK,CURFCN +.GLOBAL TD.GET,TD.PUT,TD.LNT,NOSHUF + + +.INSRT MUDDLE > + +SYSQ + +CONSTANTS + +IFN ITS,[ + N.CHNS==16. + FATINS==.VALUE +] +IFE ITS,[ + N.CHNS==102 +] + +IMPURE + +CRADIX: 10. +%UNAM: 0 ; HOLDS UNAME +%JNAM: 0 ; HOLDS JNAME +IDPROC: 0 ; ENVIRONMENT NUMBER GENERATOR +PTIME: 0 ; UNIQUE NUMBER FOR PROCID AND ENVIRONMENTS +OBLNT": 13. ; LENGTH OF DEFAULT OBLISTS (SMALL) +VECTOP": VECLOC ; TOP OF CURRENT GARBAGE COLLECTED SPACE +VECBOT": VECBASE ; BOTTOM OF GARBAGE COLLECTED SPACE +CODBOT: 0 ; ABSOLUTE BOTTOM OF CODE +CODTOP": PARBASE ; TOP OF IMPURE CODE (INCLUDING "STORAGE") +HITOP: 0 ; TOP OF INTERPRETER PURE CORE +PARNEW": 0 +PARBOT": PARBASE +PARTOP": PARLOC +VECNEW": 0 ; LOCATION FOR OFFSET BETWWEN OLD GCSTOP AND NEW GCSTOP +INTFLG: 0 ; INTERRUPT PENDING FLAG +MAINPR: 0 ; HOLDS POINTER TO THE MAIN PROCESS +NOTTY: 0 ; NON-ZERO==> THIS MUDDLE HAS NO TTY +GCHAPN: 0 ; NON-ZERO A GC HAS HAPPENED RECENTLY +INTHLD: 0 ; NON-ZERO INTERRUPTS CANT HAPPEN +PURBOT: HIBOT ; BOTTOM OF DYNAMICALLY ALLOCATED PURE +PURTOP: HIBOT ; TOP OF DYNAMICALLY ALLOCATED PURE +SPCCHK: SETZ ; SPECIAL/UNSPECIAL CHECKING? +NOSHUF: 0 ; FLAG TO BUILD A NON MOVING HI SEG + +;PAGE MAP USAGE TABLE FOR MUDDLE +;EACH PAGE IS REPRESENTED BY ONE BIT IN THE TABLE +;IF BIT = 0 THEN PAGE IS FREE OTHERWISE BUSY +;FOR PAGE n USE BIT (n MOD 32.) IN WORD PMAP+n/32. +PMAP": -1 ;SECTION 0 -- BELONGS TO AGC + -1 ;SECTION 1 -- BELONGS TO AGC + -1 ;SECTION 2 -- BELONGS TO AGC + -1 ;SECTION 3 -- BELONGS TO AGC + -1 ;SECTION 4 -- BELONGS TO AGC + -1 ;SECTION 5 -- BELONGS TO AGC (DEPENDS ON HIBOT) + -1 ;SECTION 6 -- START OF PURE CORE (FILLED IN BY INITM) + -1 ;SECTION 7 -- LAST TWO PAGES BELONG TO AGC'S PAGE MAPPER + + +NINT==72. ; NUMBER OF POSSIBLE ITS INTERRUPTS +NASOCS==159. ; LENGTH OF ASSOCIATION VECTOR +PDLBUF==100 ; EXTRA INSURENCE PDL +ASOLNT==10 ; LENGTH OF ASSOCIATION BLOCKS + + +.GLOBAL PATCH,TBINIT,LERR,LPROG,PIDSTO,PROCID,PTIME,GCPDL,INTFLG,WTYP1,WTYP2 +.GLOBAL PAT,PDLBUF,INTINT,PARNEW,GCPVP,START,SWAP,ICR,SPBASE,TPBASE,GLOBAS,GLOBSP,TPBAS +.GLOBAL TOPLEVEL,INTNUM,INTVEC,INTOBL,ASOVEC,ERROBL,MAINPR,RESFUN,.BLOCK,ASOLNT,NODES +.GLOBAL WRONGT,TTYOPE,OPEN,CLOSE,IOT,ILVAL,MESS,FACTI,REFVEC,MUDOBL,INITIA +.GLOBAL LSTRES,BINDID,DUMNOD,PSTAT,1STEPR,IDPROC,EVATYP,APLTYP,PRNTYP,PURVEC,STOLST + + +VECTGO +TVBASE": BLOCK TVLNT + GENERAL + TVLNT+2,,0 +TVLOC==TVBASE + + + +;INITIAL TYPE TABLE + +TYPVLC": + BLOCK 2*NUMPRI+2 + GENERAL + 2*NUMPRI+2+2,,0 + +TYPTP==.-2 ; POINT TO TOP OF TYPES + +; INITIAL SYMBOL TABEL FOR RSUBRS + +SQULOC==. +SQUTBL: BLOCK 2*NSUBRS + TWORD,,0 + 2*NSUBRS+2,,0 + +INTVCL: BLOCK 2*NINT + TLIST,,0 + 2*NINT+2,,0 + +NODLST: TTP,,0 + 0 + TASOC,,0 + BLOCK ASOLNT-3 + GENERAL+ + ASOLNT+2,,0 + +NODDUM: BLOCK ASOLNT + GENERAL+ + ASOLNT+2,,0 + + + +ASOVCL: BLOCK NASOCS + TASOC,,0 + NASOCS+2,,0 + + + +;THESE ENTRIES MUST NOT MOVE DURING INITILAIZATION + +ADDTV TVEC,[-2*NUMPRI-2,,TYPVLC] +TYPVEC==TVOFF-1 + +ADDTV TVEC,[-2*NUMPRI-2,,TYPVLC] +TYPBOT==TVOFF-1 ; POINT TO CURRENT TOP OF TYPE VECTORS + +;ENTRY FOR ROOT,TTICHN,TTOCHN + +ADDTV TCHAN,0 +TTICHN==TVOFF-1 + +ADDTV TCHAN,0 +TTOCHN==TVOFF-1 + +ADDTV TOBLS,0 +ROOT==TVOFF-1 +ADDTV TOBLS,0 +INITIA==TVOFF-1 +ADDTV TOBLS,0 +INTOBL==TVOFF-1 +ADDTV TOBLS,0 +ERROBL==TVOFF-1 +ADDTV TOBLS,0 +MUDOBL==TVOFF-1 +ADDTV TVEC,0 +GRAPHS==TVOFF-1 +ADDTV TFIX,0 +INTNUM==TVOFF-1 +ADDTV TVEC,[-2*NINT,,INTVCL] +INTVEC==TVOFF-1 +ADDTV TUVEC,[-NASOCS,,ASOVCL] +ASOVEC==TVOFF-1 + +ADDTV TLIST,0 +CHNL0"==TVOFF-1 ;LIST FOR CURRENTLY OPEN PSUEDO CHANNELS + +IFN ITS,[ +DEFINE ADDCHN N + ADDTV TCHAN,0 + CHNL!N==TVOFF-1 + .GLOBAL CHNL!N + TERMIN + +REPEAT 15.,ADDCHN \.RPCNT+1 + +DEFINE ADDIPC N + ADDTV TLIST,0 + IPCS!N==TVOFF-1 + .GLOBAL IPCS!N + TERMIN + +REPEAT 15.,ADDIPC \.RPCNT+1 +] + +IFE ITS,[ +ADDTV TCHAN,0 +CHNL1==TVOFF-1 +.GLOBAL CHNL1 +REPEAT N.CHNS-1,[ADDTV TCHAN,0 +] +] + +ADDTV TASOC,[-ASOLNT,,NODLST] +NODES==TVOFF-1 + +ADDTV TASOC,[-ASOLNT,,NODDUM] +DUMNOD==TVOFF-1 + +ADDTV TVEC,0 +EVATYP==TVOFF-1 + +ADDTV TVEC,0 +APLTYP==TVOFF-1 + +ADDTV TVEC,0 +PRNTYP==TVOFF-1 + +; SLOTS ASSOCIATED WITH TEMPLATE DATA STRUCTURES + +ADDTV TUVEC,0 +TD.GET==TVOFF-1 + +ADDTV TUVEC,0 +TD.PUT==TVOFF-1 + +ADDTV TUVEC,0 +TD.LNT==TVOFF-1 + +ADDTV TUVEC,0 +TD.PTY==TVOFF-1 + + + +;GLOBAL SPECIAL PDL + +GSP: BLOCK GSPLNT + GENERAL + GSPLNT+2,,0 + +ADDTV TVEC,[-GSPLNT,,GSP] +GLOBASE==TVOFF-1 +GLOB==.-2 +ADDTV TVEC,GLOB +GLOBSP==TVOFF-1 ;ENTRY FOR CURRENT POINTER TO GLOBAL SP + +; POINTER VECTOR TO PURE SHARED RSUBRS + +PURV: BLOCK 3*20. ; ENOUGH FOR 20 SUCH (INITIALLY) + 0 + 3*20.+2,,0 + +ADDTV TUVEC,[-3*20.,,PURV] +PURVEC==TVOFF-1 + +ADDTV TLIST,0 +STOLST==TVOFF-1 + +;PROCESS VECTOR FOR GARBAGE COLLECTOR PROCESS + +GCPVP: BLOCK PVLNT*2 + GENERAL + PVLNT*2+2,,0 + + +VECRET + +PURE + +;INITIAL PROCESS VECTOR + +PVBASE": BLOCK PVLNT*2 + GENERAL + PVLNT*2+2,,0 +PVLOC==PVBASE + + +;ENTRY FOR PROCESS I.D. + + ADDPV TFIX,1,PROCID +;THE FOLLOWING IRP MAKES SPACE FO9 SAVED ACS + +ZZZ==. + +IRP A,,[0,A,B,C,D,E,PVP,TVP,AB,TB,TP,SP,M,R,P]B,,[0 +0,0,0,0,0,TPVP,TTVP,TAB,TTB,TTP,TSP,TCODE,TRSUBR,TPDL] + +LOC PVLOC+2*A +A!STO==.-PVBASE +B,,0 +0 +TERMIN + +PVLOC==PVLOC+16.*2 +LOC ZZZ + + +ADDPV TTB,0,TBINIT +ADDPV TTP,0,TPBASE +ADDPV TSP,0,SPBASE +ADDPV TPDL,0,PBASE +ADDPV 0,0,RESFUN +ADDPV TLIST,0,.BLOCK +ADDPV TLIST,0,MESS +ADDPV TACT,0,FACTI +ADDPV TPVP,0,LSTRES +ADDPV TFIX,0,BINDID +ADDPV TFIX,1,PSTAT +ADDPV TPVP,0,1STEPR +ADDPV TSP,0,CURFCN + + +IMPURE + +END + ;"TENEX VERSION" + + + + ;"wakeup on all but alpha, no echo" +MUDDLE-MOD ;"gunnasigned initially" + + + + +<PSEUDO <SET SFMOD #OPCODE *104000000110*>> ;"JSYS 110" +<PSEUDO <SET RFMOD #OPCODE *104000000107*>> ;"JSYS 107" +<DECLARE ("VALUE" WORD)> +<HRRZI A* -1> ;"controlling tty file desig" +<RFMOD> +<MOVSI A* TWORD> +<JRST FINIS> + +<TITLE TTY-SET> +<DECLARE ("VALUE" WORD <PRIMTYPE WORD>)> +<HRRZI A* -1> +<MOVE B* 1 (AB)> +<SFMOD> +<MOVE A* (AB)> +<MOVE B* 1 (AB)> +<JRST FINIS> + +<END> + +<DEFINE TTY-OFF () +<COND (<NOT <GASSIGNED? MUDDLE-MOD>> + <SETG MUDDLE-MOD <TTY-GET>>)> + <TTY-SET ,CALICO-MOD>> + +<DEFINE TTY-ON () +<COND (<NOT <GASSIGNED? MUDDLE-MOD>> + <SETG MUDDLE-MOD <TTY-GET>>) + (<TTY-SET ,MUDDLE-MOD>)>> + + +<ENDPACKAGE> + TITLE UUO HANDLER FOR MUDDLE AND HYDRA +RELOCATABLE +.INSRT MUDDLE > + +;GLOBALS FOR THIS PROGRAM + +.GLOBAL BACKTR,PRINT,PDLBUF,TPGROW,SPECSTO,TIMOUT,AGC,VECBOT,VECTOP +.GLOBAL BCKTRK,TPOVFL,.MONWR,.MONRD,.MONEX,MAKACT,IGVAL,ILVAL,BFRAME +.GLOBAL PURTOP,PURBOT,PLOAD,PURVEC,STOSTR,MSGTYP,UUOH,ILLUUO + +;SETUP UUO DISPATCH TABLE HERE + +UUOTBL: ILLUUO + +IRP UUOS,,[[DP,DODP],[.MCALL,DMCALL],[.ACALL,DACALL],[.ECALL,DECALL],[.FATAL,DFATAL]] +UUFOO==.IRPCNT+1 +IRP UUO,DISP,[UUOS] +.GLOBAL UUO +UUO=UUFOO_33 +DISP +.ISTOP +TERMIN +TERMIN + +REPEAT 100-UUFOO,[ILLUUO +] + + +RMT [ +IMPURE + +UUOH: +LOC 41 + JSR UUOH +LOC UUOH + 0 + JRST UUOPUR ;GO TO PURE CODE FOR THIS + +SAVEC: 0 ; USED TO SAVE WORKING AC +NOLINK: 0 + +PURE +] + +;SEPARATION OF PURE FROM IMPURE CODE HERE + +UUOPUR: MOVEM C,SAVEC ; SAVE AC + LDB C,[330900,,40] + JRST @UUOTBL(C) ;DISPATCH BASED ON THE UUO + + + +ILLUUO: FATAL ILLEGAL UUO + ;CALL HANDLER + +MQUOTE CALLER +CALLER: + +DMCALL": + MOVEI D,0 ; FLAG NOT ENTRY CALL + LDB C,[270400,,40] ; GET AC FIELD OF UUO +COMCAL: LSH C,1 ; TIMES 2 + MOVN AB,C ; GET NEGATED # OF ARGS + HRLI C,(C) ; TO BOTH SIDES + SUBM TP,C ; NOW HAVE TP TO SAVE + MOVEM C,TPSAV(TB) ; SAVE IT + MOVSI AB,(AB) ; BUILD THE AB POINTER + HRRI AB,1(C) ; POINT TO ARGS + HRRZ C,UUOH ; GET PC OF CALL + CAMG C,PURTOP ; SKIP IF NOT IN GC SPACE + CAIGE C,STOSTR ; SKIP IF IN GC SPACE + JRST .+3 + SUBI C,(M) ; RELATIVIZE THE PC + HRLI C,M ; FOR RETURNER TO WIN + MOVEM C,PCSAV(TB) + MOVEM SP,SPSAV(TB) ; SAVE BINDING GOODIE + MOVSI C,TENTRY ; SET UP ENTRY WORD + HRR C,40 ; POINT TO CALLED SR + ADD TP,[FRAMLN,,FRAMLN] ; ALLOCATE NEW FRAME + JUMPGE TP,TPLOSE +CALDON: MOVEM C,FSAV+1(TP) ; CLOBBER THE FRAME + MOVEM TB,OTBSAV+1(TP) + MOVEM AB,ABSAV+1(TP) ; FRAME BUILT + MOVEM P,PSAV(TB) + HRRI TB,(TP) ; SETUP NEW TB + MOVEI C,(C) + MOVEI M,0 ; UNSETUP M FOR GC WINNAGE + CAMG C,VECTOP ; SKIP IF NOT RSUBR + CAMGE C,VECBOT ; SKIP IF RSUBR + JRST CALLS + GETYP A,(C) ; GET CONTENTS OF SLOT + JUMPN D,EVCALL ; EVAL CALLING ENTRY ? + CAIE A,TRSUBR ; RSUBR CALLING RSUBR ? + JRST RCHECK ; NO + MOVE R,(C)+1 ; YES, SETUP R +CALLR0: HRRM R,FSAV+1(TB) ; FIXUP THE PROPER FSAV +CALLR1: AOS E,2(R) ; COUNT THE CALLS + TRNN E,-1 ; SKIP IF OK + JRST COUNT1 + + SKIPL M,(R)+1 ; SETUP M + JRST SETUPM ; JUMP IF A PURE RSUBR IN QUESTION + AOBJP TB,.+1 ; GO TO CALLED RSUBR + INTGO ; CHECK FOR INTERRUPTS + JRST (M) + +COUNT1: SOS 2(R) ; UNDO OVERFLOW + HLLZS 2(R) + JRST CALLR1 + +CALLS: AOBJP TB,.+1 ; GO TO CALLED SUBR + INTGO ; CHECK FOR INTERRUPTS + JRST @C + +; HERE TO HANDLE A PURE RSUBR (LOAD IF PUNTED OR OTHERWISE FLUSHED) + +SETUPM: MOVEI C,0 ; OFFSET (FOR MAIN ENTRIES) +STUPM1: MOVEI D,(M) ; GET OFFSET INTO CODE + HLRS M ; GET VECTOR OFFSET IN BOTH HALVES + ADD M,PURVEC+1(TVP) ; GET IT + SKIPL M + FATAL LOSING PURE RSUBR POINTER + HLLM TB,2(M) ; MARK FOR LRU ALGORITHM + SKIPN M,1(M) ; POINT TO CORE IF LOADED + AOJA TB,STUPM2 ; GO LOAD IT +STUPM3: ADDI M,(D) ; POINT TO REAL THING + HRLI C,M ; POINT TO START PC + AOBJP TB,.+1 + INTGO + JRST @C ; GO TO IT + +STUPM2: HLRZ A,1(R) ; SET UP TO CALL LOADER + PUSH P,D + PUSH P,C + PUSHJ P,PLOAD ; LOAD IT + JRST PCANT1 + POP P,C + POP P,D + MOVE M,B ; GET LOCATION + SOJA TB,STUPM3 + +RCHECK: CAIN A,TPCODE ; PURE RSUBR? + JRST .+3 + CAIE A,TCODE ; EVALUATOR CALLING RSUBR ? + JRST SCHECK ; NO + MOVS R,(C) ; YES, SETUP R + HRRI R,(C) + JRST CALLR1 ; GO FINISH THE RSUBR CALL + + +SCHECK: CAIE A,TSUBR ; RSUBR CALLING SUBR AS REFERENCE ? + CAIN A,TFSUBR + SKIPA C,(C)+1 ; SKIP AND GET ROUTINE'S ADDRESS + JRST ECHECK + HRRM C,FSAV+1(TB) ; FIXUP THE PROPER FSAV + JRST CALLS ; GO FINISH THE SUBR CALL + +ECHECK: CAIE A,TENTER ; SKIP IF SUB ENTRY OF RSUBR + JRST ACHECK ; COULD BE EVAL CALLING ONE + MOVE C,1(C) ; POINT TO SUB ENTRY BLOCK +ECHCK3: GETYP A,(C) ; SEE IF LINKED TO ITS MAIN ENTRY + MOVE B,1(C) + CAIN A,TRSUBR + JRST ECHCK2 + +; CHECK IF CAN LINK ATOM + + CAIE A,TATOM + JRST BENTRY ; LOSER , COMPLAIN +ECHCK4: MOVE B,1(C) ; GET ATOM + PUSH TP,$TVEC + PUSH TP,C + PUSHJ P,IGVAL ; TRY GLOBAL VALUE + MOVE C,(TP) + SUB TP,[2,,2] + CAMN A,$TUNBOU + JRST BADVAL + CAME A,$TRSUBR ; IS IT A WINNER + JRST BENTRY + SKIPE NOLINK + JRST ECHCK2 + HLLM A,(C) ; FIXUP LINKAGE + MOVEM B,1(C) + JRST ECHCK2 + +EVCALL: CAIN A,TATOM ; EVAL CALLING ENTRY? + JRST ECHCK4 ; COULD BE MUST FIXUP + CAIE A,TRSUBR ; YES THIS IS ONE + JRST BENTRY + MOVE B,1(C) +ECHCK2: MOVE R,B ; SET UP R + HRRM C,FSAV+1(TB) ; SET POINTER INTO FRAME + HRRZ C,2(C) ; FIND OFFSET INTO SAME + SKIPL M,1(R) ; POINT TO START OF RSUBR + JRST STUPM1 ; JUMP IF A LOSER + HRLI C,M + JRST CALLS ; GO TO SR + +ACHECK: CAIE A,TATOM ; RSUBR CALLING THROUGH REFERENCE ATOM ? + JRST DOAPP3 ; TRY APPLYING IT + MOVE A,(C) + MOVE B,(C)+1 + PUSHJ P,IGVAL + HRRZ C,40 ; REGOBBLE POINTER TO SLOT + GETYP 0,A ; GET TYPE + CAIN 0,TUNBOUND + JRST TRYLCL +SAVEIT: CAIE 0,TRSUBR + CAIN 0,TENTER + JRST SAVEI1 ; WINNER + CAIE 0,TSUBR + CAIN 0,TFSUBR + JRST SUBRIT + JRST BADVAL ; SOMETHING STRANGE +SAVEI1: SKIPE NOLINK + JRST .+3 + MOVEM A,(C) ; CLOBBER NEW VALUE + MOVEM B,(C)+1 + CAIN 0,TENTER + JRST ENTRIT ; HACK ENTRY TO SUB RSUBR + MOVE R,B ; SETUP R + JRST CALLR0 ; GO FINISH THE RSUBR CALL + +ENTRIT: MOVE C,B + JRST ECHCK3 + +SUBRIT: SKIPE NOLINK + JRST .+3 + MOVEM A,(C) + MOVEM B,1(C) + HRRM B,FSAV+1(TB) ; FIXUP THE PROPER FSAV + MOVEI C,(B) + JRST CALLS ; GO FINISH THE SUBR CALL + +TRYLCL: MOVE A,(C) + MOVE B,(C)+1 + PUSHJ P,ILVAL + GETYP 0,A + CAIE 0,TUNBOUND + JRST SAVEIT + SKIPA D,EQUOTE UNBOUND-VARIABLE +BADVAL: MOVEI D,0 +ERCAL: AOBJP TB,.+1 ; MAKE TB A LIGIT FRAME PNTR + MOVEI E,CALLER + HRRM E,FSAV(TB) ; SET A WINNING FSAV + HRRZ C,40 ; REGOBBLE POINTER TO SLOT + JUMPE D,DOAPPL + SUBI C,(R) ; CALCULATE OFFSET + HRLS C + ADD C,R ; MAKE INTO REAL RSUBR POINTER + PUSH TP,$TRSUBR ; SAVE + PUSH TP,C + HRRZ C,40 ; REGOBBLE POINTER TO SLOT + PUSH TP,$TATOM + PUSH TP,D + PUSH TP,(C) + PUSH TP,(C)+1 + PUSH TP,$TATOM + PUSH TP,MQUOTE CALLER + MCALL 3,ERROR + MOVE C,(TP) ; GET SAVED RSUBR POINTER + SUB TP,[2,,2] ; POP STACK + GETYP 0,A + HRRM C,40 + SOJA TB,SAVEIT + +BENTRY: MOVE D,EQUOTE BAD-ENTRY-BLOCK + JRST ERCAL + +;HANDLER FOR CALL WHERE SPECIFIES NUMBER OF ARGS + +DACALL": + LDB C,[270400,,40] ; GOBBLE THE AC LOCN INTO C + EXCH C,SAVEC ; C TO SAVE LOC RESTORE C + MOVE C,@SAVEC ; C NOW HAS NUMBER OF ARGS + MOVEI D,0 ; FLAG NOT E CALL + JRST COMCAL ; JOIN MCALL + +; CALL TO ENTRY FROM EVAL (LIKE ACALL) + +DECALL: LDB C,[270400,,40] ; GET NAME OF AC + EXCH C,SAVEC ; STORE NAME + MOVE C,@SAVEC ; C NOW HAS NUM OF ARGS + MOVEI D,1 ; FLAG THIS + JRST COMCAL + +;HANDLE OVERFLOW IN THE TP + +TPLOSE: PUSHJ P,TPOVFL + JRST CALDON + +; RSUBR HAS POSSIBLY BEEN REPLACED BY A FUNCTION OR WHATEVER, DO AN APPLY + +DOAPPL: PUSH TP,A ; PUSH THE THING TO APPLY + PUSH TP,B + MOVEI A,1 +DOAPP2: JUMPGE AB,DOAPP1 ; ARGS DONE + + PUSH TP,(AB) + PUSH TP,1(AB) + ADD AB,[2,,2] + AOJA A,DOAPP2 + +DOAPP1: ACALL A,APPLY ; APPLY THE LOSER + JRST FINIS + +DOAPP3: MOVE A,(C) ; GET VAL + MOVE B,1(C) + JRST BADVAL ; GET SETUP FOR APPLY CALL + +; ENTRY TO BUILD A FRAME (USED BY SOME COMPILED PROG/REPEAT) + +BFRAME: HRLI A,M ; RELATIVIZE PC + MOVEM A,PCSAV(TB) ; CLOBBER PC IN + MOVEM TP,TPSAV(TB) ; SAVE STATE + MOVEM SP,SPSAV(TB) + ADD TP,[FRAMLN,,FRAMLN] + SKIPL TP + PUSHJ TPOVFL ; HACK BLOWN PDL + MOVSI A,TCBLK ; FUNNY FRAME + HRRI A,(R) + MOVEM A,FSAV+1(TP) ; CLOBBER + MOVEM TB,OTBSAV+1(TP) + MOVEM AB,ABSAV+1(TP) + POP P,A ; RET ADDR TO A + MOVEM P,PSAV(TB) + HRRI TB,(TP) + AOBJN TB,.+1 + JRST (A) + ;SUBROUTINE TERMINATION CODE (NOT A UUO BUT HERE FOR COMPLETENENSS) + +FINIS: +CNTIN1: HRRZS C,OTBSAV(TB) ; RESTORE BASE + HRRI TB,(C) +CONTIN: MOVE TP,TPSAV(TB) ; START HERE FOR FUNNY RESTART + MOVE P,PSAV(TB) + CAME SP,SPSAV(TB) ; ANY RESTORATION NEEDED + PUSHJ P,SPECSTO ; YES, GO UNRAVEL THE WORLDS BINDINGS + MOVE AB,ABSAV(TB) ; AND GET OLD ARG POINTER + HRRZ C,FSAV(TB) ; CHECK FOR RSUBR + MOVEI M,0 ; UNSETUP M FOR GC WINNAGE + CAMG C,VECTOP + CAMGE C,VECBOT + JRST @PCSAV(TB) ; AND RETURN + GETYP 0,(C) ; RETURN TO MAIN OR SUB ENTRY? + CAIN 0,TCODE + JRST .+3 + CAIE 0,TPCODE + JRST FINIS1 + MOVS R,(C) + HRRI R,(C) ; RESET R + SKIPGE M,1(R) ; GET LOC OF REAL SUBR + JRST @PCSAV(TB) + JRST FINIS2 + +FINIS1: CAIE 0,TRSUBR + JRST FINISA ; MAY HAVE BEEN PUT BACK TO ATOM + MOVE R,1(C) + SKIPGE M,1(R) + JRST @PCSAV(TB) + +FINIS2: MOVEI C,(M) ; COMPUTE REAL M FOR PURE RSUBR + HLRS M + ADD M,PURVEC+1(TVP) + SKIPN M,1(M) ; SKIP IF LOADED + JRST FINIS3 + ADDI M,(C) ; POINT TO SUB PART + JRST @PCSAV(TB) + +FINIS3: PUSH TP,A + PUSH TP,B + HLRZ A,1(R) ; RELOAD IT + PUSHJ P,PLOAD + JRST PCANT + POP TP,B + POP TP,A + MOVE M,1(R) + JRST FINIS2 + +FINISA: CAIE 0,TATOM + JRST BADENT + PUSH TP,A + PUSH TP,B + PUSH TP,$TENTER + HRL C,(C) + PUSH TP,C + MOVE B,1(C) ; GET ATOM + PUSHJ P,IGVAL ; GET VAL + GETYP 0,A + CAIE 0,TRSUBR + JRST BADENT + MOVE C,(TP) + HLLM A,(C) + MOVEM B,1(C) + MOVE A,-3(TP) + MOVE B,-2(TP) + SUB TP,[4,,4] + JRST FINIS1 + +BADENT: PUSH TP,$TATOM + PUSH TP,EQUOTE RSUBR-ENTRY-UNLINKED + JRST CALER1 + +PCANT1: ADD TB,[1,,] +PCANT: PUSH TP,$TATOM + PUSH TP,EQUOTE PURE-LOAD-FAILURE + JRST CALER1 + +REPEAT 0,[ +BCKTR1: PUSH TP,A ; SAVE VALUE TO BE RETURNED + PUSH TP,B ; SAVE FRAME ON PP + PUSHJ P,BCKTRK + POP TP,B + POP TP,A + JRST CNTIN1 +] + +; SUBR TO ENABLE AND DISABLE LINKING OF RSUBRS AT RUN TIME + +MFUNCTION %RLINK,SUBR,[RSUBR-LINK] + + ENTRY 1 + + GETYP 0,(AB) + SETZM NOLINK + CAIN 0,TFALSE + SETOM NOLINK + MOVE A,(AB) + MOVE B,1(AB) + JRST FINIS + +;HANDLER FOR DEBUGGING CALL TO PRINT + +DODP": + PUSH TP, @40 + AOS 40 + PUSH TP,@40 + PUSH P,0 + PUSH P,1 + PUSH P,2 + PUSH P,SAVEC + PUSH P,4 + PUSH P,5 + PUSH P,40 + PUSH P,UUOH + MCALL 1,PRINT + POP P,UUOH + POP P,40 + POP P,5 + POP P,4 + POP P,3 + POP P,2 + POP P,1 + POP P,0 + JRST 2,@UUOH + + +DFATAL: MOVEM A,20 + MOVEM B,21 + MOVE B,40 + HRLI B,440700 + PUSHJ P,MSGTYP + JRST 4,. +END +  \ No newline at end of file diff --git a/sumex/muddle.source-list.750610.2.txt b/sumex/muddle.source-list.750610.2.txt new file mode 100644 index 0000000..ad774f4 --- /dev/null +++ b/sumex/muddle.source-list.750610.2.txt @@ -0,0 +1,52 @@ +27-MAY-75 09:19:05-PDT,2584;000000000000 +Mail from MIT-DMS rcvd at 27-MAY-75 0918-PDT +DATE: 27 MAY 75 1135-EDT +FROM: XXX at MIT-DMS +SUBJECT: muddle source code +ACTION-TO: xxxxxxx at SUMEX-AIM +MESSAGE-ID: <[MIT-DMS]27 MAY 75 12:16:34-EDT.17282> + +Dear Xxxx, + Here is a list of the files that constitute the source for MUDDLE. +I don't know if you want all of them (total approximately 156000 36-bit +words of text--almost 1 million characters). Please let me know which +you like FTPd to your machine. MIDAS is very poorly documented, although +it is similar enough to other PDP-10 assmeblers that the code should +be readable by your system programmers. + Xxxxx + + +Muddle source file list. + +_________ ______ ___________ _____________ + +AGC MCR273 19 garbage collector no +ARITH MBD079 3 arithmetic SUBRs no +ATOMHK MCR098 4 atom/oblist SUBRs no +CREATE MCR035 2 process creator/resumers no +DECL MCR072 4 declaration processor no +EVAL MCR349 17 evaluator no +FOPEN MCR352 18 i/o SUBRs yes +GCHACK MCR020 2 storage handlers no +INITM MCR186 4 initializer (destroyed during + initialization) small amount +INTERR MCR239 9 inerrupt routines yes +MAIN MCR227 8 startup code, main loop and misc. no +MAPPUR MCR078 5 page sharing code yes +MAPS MCR017 2 MAPF/MAPR code no +MUDDLE MCR291 5 insert file used during assembly no +MUDEX MCR030 2 TENEX specific code yes +MUDSQU MCR004 1 internal symbol table routine no +NFREE MCR032 2 special storage module no +PFLOAT MCR003 1 floating point number printer no +PRIMIT MCR169 12 structure manipulating SUBRs no +PRINT MCR246 12 printer (muddle objs==>ascii) no +PUTGET MCR047 2 association handling routines no +READCH MCR116 4 teletype handling code yes +READER MCR264 10 reader (ascii==>muddle obj) no +SAVE MCR083 3 entire muddle saver/restorer yes +SPECS MCR062 2 common data bases etc. yes +STENEX MCR002 1 TENEX symbols for midas yes +UUOH MCR072 2 call/return uuos no + +*length in number of 1024 word blocks. -- 2.31.1