From 5154191043a9b7227ef0eee1a2b40299fc188655 Mon Sep 17 00:00:00 2001 From: Jason Self Date: Wed, 28 Sep 2016 15:07:06 -0700 Subject: [PATCH 1/1] Importing Inform 6 compiler based on commit 25a93cf from upstream dated Sep 25 2016. Modified to work better when the Inform standard library is in a non-standard location. Relicensed to GPL per Section 4(c)(ii) of the Artistic License 2.0. --- COPYING | 674 +++++++++ DebugFileFormat.txt | 401 ++++++ arrays.c | 672 +++++++++ asm.c | 3189 +++++++++++++++++++++++++++++++++++++++++++ bpatch.c | 525 +++++++ chars.c | 1324 ++++++++++++++++++ directs.c | 1159 ++++++++++++++++ errors.c | 499 +++++++ expressc.c | 2920 +++++++++++++++++++++++++++++++++++++++ expressp.c | 2071 ++++++++++++++++++++++++++++ files.c | 1799 ++++++++++++++++++++++++ header.h | 2826 ++++++++++++++++++++++++++++++++++++++ inform.c | 1864 +++++++++++++++++++++++++ lexer.c | 1820 ++++++++++++++++++++++++ linker.c | 1154 ++++++++++++++++ memory.c | 1142 ++++++++++++++++ objects.c | 2270 ++++++++++++++++++++++++++++++ readme.txt | 39 + states.c | 2674 ++++++++++++++++++++++++++++++++++++ symbols.c | 1495 ++++++++++++++++++++ syntax.c | 734 ++++++++++ tables.c | 1945 ++++++++++++++++++++++++++ text.c | 2328 +++++++++++++++++++++++++++++++ veneer.c | 2407 ++++++++++++++++++++++++++++++++ verbs.c | 936 +++++++++++++ 25 files changed, 38867 insertions(+) create mode 100644 COPYING create mode 100644 DebugFileFormat.txt create mode 100644 arrays.c create mode 100644 asm.c create mode 100644 bpatch.c create mode 100644 chars.c create mode 100644 directs.c create mode 100644 errors.c create mode 100644 expressc.c create mode 100644 expressp.c create mode 100644 files.c create mode 100644 header.h create mode 100644 inform.c create mode 100644 lexer.c create mode 100644 linker.c create mode 100644 memory.c create mode 100644 objects.c create mode 100644 readme.txt create mode 100644 states.c create mode 100644 symbols.c create mode 100644 syntax.c create mode 100644 tables.c create mode 100644 text.c create mode 100644 veneer.c create mode 100644 verbs.c diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..94a9ed0 --- /dev/null +++ b/COPYING @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/DebugFileFormat.txt b/DebugFileFormat.txt new file mode 100644 index 0000000..9850bbf --- /dev/null +++ b/DebugFileFormat.txt @@ -0,0 +1,401 @@ +Format of Inform 6 Debugging Information Files + +Version 1.0 + +0: Introduction + +This is a specification of the Version 1 format for the debugging information +files emitted by the Inform 6 compiler. It replaces Version 0, which is +documented in Section 12.5 of the Inform Technical Manual. + +1: Overview + +Debugging information files are written in XML and encoded in UTF-8. They +therefore begin with the following declaration: + + + +Beyond the usual requirements for well-formed XML, the file adheres to the +conventions that all numbers are written in decimal, all strings are +case-sensitive, and all excerpts from binary files are Base64-encoded. + +2: The Top Level + +The root element is given by the tag with three attributes, +the version of the debug file format being used, the name of the program that +produced the file, and that program's version. For instance, + + + ... + + +The elements from Sections 3--8 may appear in the ellipses. + +3: Story File Prefix + +The story file prefix contains a Base64 encoding of the story file's first bytes +so that a debugging tool can easily check whether the story and the debug +information file are mismatched. For example, the prefix for a Glulx story +might appear as + + + R2x1bAADAQEACqEAAAwsAAAMLAAAAQAAAAAAPAAIo2Jc + 6B2XSW5mbwABAAA2LjMyMC4zOAABMTIxMDE1wQAAMA== + + +The story file prefix is mandatory, but its length is unspecified. Version 6.33 +of the Inform compiler records 64 bytes, which seems sufficient. + +4: Story File Sections + +Story file sections partition the story file according to how the data will be +used. For the Inform 6 compiler, this partitioning is the same as the one that +the `z' flag prints. + +A record for a story file section gives a name for that section, its beginning +address (inclusive), and its end address (exclusive): + + + abbreviations table +
64
+ 128 + + +The names currently in use include those from Section 12.5 of the Inform +Technical Manual: + + abbreviations table + header extension (Z-code only) + alphabets table (Z-code only) + Unicode table (Z-code only) + property defaults + object tree + common properties + class numbers + individual properties (Z-code only) + global variables + array space + grammar table + actions table + parsing routines (Z-code only) + adjectives table (Z-code only) + dictionary + code area + strings area + +plus one addition for Z-code: + + abbreviations + +two additions for Glulx: + + memory layout id + string decoding table + +and three additions for both targets: + + header + identifier names + zero padding + +Names may repeat; Glulx story files, for example, sometimes have two zero +padding sections. + +A compiler that does not wish to subdivide the story file should emit one +section for the entirety and give it the name + + story + +5: Source Files + +Source files are encoded as in the example below. Each file has a unique index, +which is used by other elements when referring to source code locations; these +indices count from zero. The file's path is recorded in two forms, first as it +was given to the compiler via a command-line argument or include directive but +without any path abbreviations like `>' (the form suitable for presentation to a +human) and second after resolution to an absolute path (the form suitable for +loading the file contents). All paths are written according to the conventions +of the host OS. The language is, at present, either "Inform 6" or "Inform 7". +More languages may added in the future. + + + example.inf + /home/user/directory/example.inf + Inform 6 + + +If the source file is known to appear in the story's Blorb, its chunk number +will also be recorded: + + + example.inf + /home/user/directory/example.inf + Inform 6 + 18 + + +6: Table Entries; Grammar Lines + +Table entries are data defined by particular parts of the source code, but +without any corresponding identifiers. The element notes the +entry's type, the address where it begins (inclusive), the address where it ends +(exclusive), and the defining source code location(s), if any: + + + grammar line +
1004
+ 1030 + ... + + +Version 6.33 of the Inform compiler only emits tags for grammar +lines; these data are all located in the grammar table section. + +7: Named Values; Constants, Attributes, Properties, Actions, Fake Actions, + Objects, Classes, Arrays, and Routines + +Records for named values store their identifier, their value, and the source +code location(s) of their definition, if any. For instance, + + + MAX_SCORE + 40 + ... + + +would represent a named constant. Attributes, properties, actions, fake +actions, objects, arrays, and routines are also names for numbers, and differ +only in their use; they are represented in the same format under the tags +, , , , , , and +. (Moreover, unlike Version 0 of the debug information format, fake +actions are not recorded as both fake actions and actions.) + +The records for constants include some extra entries for the system constants +tabulated in Section 12.2 of the Inform Technical Manual, even though these are +not created by Constant directives. Entries for #undefed constants are also +included, but necessarily without values. + +Some records for objects will represent class objects. In that case, they will +be given with the tag rather than and include an additional +child to indicate their class number: + + + lamp + 5 + 1560 + ... + + +Records for arrays also have extra children, which record their size, their +element size, and the intended semantics for their zeroth element: + + + route + 1500 + 20 + 4 + true + ... + + +And finally, records contain an
and a element, +along with any number of the and elements, +which are described in Sections 9 and 10. The address is provided because the +identifier's value may be packed. + +Sometimes what would otherwise be a named value is in fact anonymous; unnamed +objects, embedded routines, some replaced routines, veneer properties, and the +Infix attribute are all examples. In such a case, the subelement +will carry the XML attribute + + artificial + +to indicate that the compiler is providing a sensible name of its own, which +could be presented to a human, but is not actually an identifier. For instance: + + + lantern.time_left + 1820 + 80 + ... + ... + + +Artificial identifiers may contain characters, like the full stop in +``lantern.time_left'', that would not be legal in the source language. + +8: Global Variables + +Globals are similar to named values, except that they are not interpreted as a +fixed value, but rather have an address where their value can be found. Their +records therefore contain an
tag in place of the tag, as in: + + + darkness_witnessed +
1520
+ ... + + +9: Local Variables + +The format for local variables mimics the format for global variables, except +that a source code location is never included, and their memory locations are +not given by address. For Z-code, locals are specified by index: + + + parameter + 1 + + +whereas for Glulx they are specified by frame offset: + + + parameter + 4 + + +If a local variable identifier is only in scope for part of a routine, it's +scope will be encoded as a beginning instruction address (inclusive) and an +ending instruction address (exclusive): + + + rulebook + 0 + 1628 + 1678 + + +Identifiers with noncontiguous scopes are recorded as one +element per contiguous region. It is possible for the same identifier to map to +different variables, so long as the corresponding scopes are disjoint. + +10: Sequence Points + +Sequence points are stored as an instruction address and the corresponding +single location in the source code: + + +
1628
+ ... + + +The source code location will always be exactly one position with overlapping +endpoints. + +Sequence points are defined as in Section 12.4 of the Inform Technical Manual, +but with the further stipulation that labels do not influence their source code +locations, as they did in Version 0 of the debug information format. For +instance, in code like + + say__p = 1; ParaContent(); .L_Say59; .LSayX59; + t_0 = 0; + +the sequence points are to be placed like this: + + <*> say__p = 1; <*> ParaContent(); .L_Say59; .LSayX59; + <*> t_0 = 0; + +rather than like this: + + <*> say__p = 1; <*> ParaContent(); <*> .L_Say59; .LSayX59; + t_0 = 0; + +11: Source Code Locations + +Most source code locations take the following format, which describes their +file, the line and character number where they begin (inclusive), the line and +character number where they end (exclusive), and the file positions (in bytes) +corresponding to those endpoints: + + + 0 + 1024 + 4 + 44153 + 1025 + 1 + 44186 + + +Line numbers and character numbers begin at one, but file positions count from +zero. + +In the special case where the endpoints coincide, as happens with sequence +points, the end elements may be elided: + + + 0 + 1024 + 4 + 44153 + + +At the other extreme, sometimes definitions span several source files or appear +in two different languages. The former case is dealt with by including multiple +code location elements and indexing them to indicate order: + + + + + 0 + 1024 + 4 + 44153 + 1025 + 1 + 44186 + + + + + 1 + 1 + 0 + 0 + 3 + 1 + 59 + + +The latter case is also handled with multiple elements. Note that indexing is +only used to indicated order among locations in the same language. + + + + + 2 + 12 + 0 + 308 + 12 + 112 + 420 + + + + + 0 + 1024 + 4 + 44153 + 1025 + 1 + 44186 + + +-- +This file is part of Inform. + +Inform is free software: you can redistribute it and/or modify it +under the terms of the GNU General Public License as published by the +Free Software Foundation, either version 3 of the License, or (at your +option) any later version. + +Inform is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with Inform. If not, see https://gnu.org/licenses/ diff --git a/arrays.c b/arrays.c new file mode 100644 index 0000000..0f1d3e5 --- /dev/null +++ b/arrays.c @@ -0,0 +1,672 @@ +/* ------------------------------------------------------------------------- */ +/* "arrays" : Parses array declarations and constructs arrays from them; */ +/* likewise global variables, which are in some ways a */ +/* simpler form of the same thing. */ +/* */ +/* Copyright (c) Graham Nelson 1993 - 2016 */ +/* */ +/* This file is part of Inform. */ +/* */ +/* Inform is free software: you can redistribute it and/or modify */ +/* it under the terms of the GNU General Public License as published by */ +/* the Free Software Foundation, either version 3 of the License, or */ +/* (at your option) any later version. */ +/* */ +/* Inform is distributed in the hope that it will be useful, */ +/* but WITHOUT ANY WARRANTY; without even the implied warranty of */ +/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ +/* GNU General Public License for more details. */ +/* */ +/* You should have received a copy of the GNU General Public License */ +/* along with Inform. If not, see https://gnu.org/licenses/ */ +/* */ +/* ------------------------------------------------------------------------- */ + +#include "header.h" + +/* ------------------------------------------------------------------------- */ +/* Arrays defined below: */ +/* */ +/* int dynamic_array_area[] Initial values for the bytes of */ +/* the dynamic array area */ +/* int32 global_initial_value[n] The initialised value of the nth */ +/* global variable (counting 0 - 239) */ +/* */ +/* The "dynamic array area" is the Z-machine area holding the current */ +/* values of the global variables (in 240x2 = 480 bytes) followed by any */ +/* (dynamic) arrays which may be defined. Owing to a poor choice of name */ +/* some years ago, this is also called the "static data area", which is */ +/* why the memory setting for its maximum extent is "MAX_STATIC_DATA". */ +/* */ +/* In Glulx, that 240 is changed to MAX_GLOBAL_VAR_NUMBER, and we take */ +/* correspondingly more space for the globals. This *really* ought to be */ +/* split into two segments. */ +/* ------------------------------------------------------------------------- */ +int *dynamic_array_area; /* See above */ +int32 *global_initial_value; + +int no_globals; /* Number of global variables used + by the programmer (Inform itself + uses the top seven -- but these do + not count) */ + /* In Glulx, Inform uses the bottom + ten. */ + +int dynamic_array_area_size; /* Size in bytes */ + +int no_arrays; +int32 *array_symbols; +int *array_sizes, *array_types; + +static int array_entry_size, /* 1 for byte array, 2 for word array */ + array_base; /* Offset in dynamic array area of the + array being constructed. During the + same time, dynamic_array_area_size + is the offset of the initial entry + in the array: so for "table" and + "string" arrays, these numbers are + different (by 2 and 1 bytes resp) */ + + /* In Glulx, of course, that will be + 4 instead of 2. */ + +extern void finish_array(int32 i) +{ + /* Write the array size into the 0th byte/word of the array, if it's + a "table" or "string" array */ + if (!glulx_mode) { + + if (array_base!=dynamic_array_area_size) + { if (dynamic_array_area_size-array_base==2) + { dynamic_array_area[array_base] = i/256; + dynamic_array_area[array_base+1] = i%256; + } + else + { if (i>=256) + error("A 'string' array can have at most 256 entries"); + dynamic_array_area[array_base] = i; + } + } + + } + else { + if (array_base!=dynamic_array_area_size) + { if (dynamic_array_area_size-array_base==4) + { + dynamic_array_area[array_base] = (i >> 24) & 0xFF; + dynamic_array_area[array_base+1] = (i >> 16) & 0xFF; + dynamic_array_area[array_base+2] = (i >> 8) & 0xFF; + dynamic_array_area[array_base+3] = (i) & 0xFF; + } + else + { if (i>=256) + error("A 'string' array can have at most 256 entries"); + dynamic_array_area[array_base] = i; + } + } + + } + + /* Move on the dynamic array size so that it now points to the next + available free space */ + + dynamic_array_area_size += i*array_entry_size; + +} + +extern void array_entry(int32 i, assembly_operand VAL) +{ + if (!glulx_mode) { + /* Array entry i (initial entry has i=0) is set to Z-machine value j */ + + if (dynamic_array_area_size+(i+1)*array_entry_size > MAX_STATIC_DATA) + memoryerror("MAX_STATIC_DATA", MAX_STATIC_DATA); + + if (array_entry_size==1) + { dynamic_array_area[dynamic_array_area_size+i] = (VAL.value)%256; + + if (VAL.marker != 0) + error("Entries in byte arrays and strings must be known constants"); + + /* If the entry is too large for a byte array, issue a warning + and truncate the value */ + else + if (VAL.value >= 256) + warning("Entry in '->', 'string' or 'buffer' array not in range 0 to 255"); + } + else + { dynamic_array_area[dynamic_array_area_size + 2*i] = (VAL.value)/256; + dynamic_array_area[dynamic_array_area_size + 2*i+1] = (VAL.value)%256; + if (VAL.marker != 0) + backpatch_zmachine(VAL.marker, DYNAMIC_ARRAY_ZA, + dynamic_array_area_size + 2*i); + } + } + else { + /* Array entry i (initial entry has i=0) is set to value j */ + + if (dynamic_array_area_size+(i+1)*array_entry_size > MAX_STATIC_DATA) + memoryerror("MAX_STATIC_DATA", MAX_STATIC_DATA); + + if (array_entry_size==1) + { dynamic_array_area[dynamic_array_area_size+i] = (VAL.value) & 0xFF; + + if (VAL.marker != 0) + error("Entries in byte arrays and strings must be known constants"); + + /* If the entry is too large for a byte array, issue a warning + and truncate the value */ + else + if (VAL.value >= 256) + warning("Entry in '->', 'string' or 'buffer' array not in range 0 to 255"); + } + else if (array_entry_size==4) + { dynamic_array_area[dynamic_array_area_size + 4*i] = (VAL.value >> 24) & 0xFF; + dynamic_array_area[dynamic_array_area_size + 4*i+1] = (VAL.value >> 16) & 0xFF; + dynamic_array_area[dynamic_array_area_size + 4*i+2] = (VAL.value >> 8) & 0xFF; + dynamic_array_area[dynamic_array_area_size + 4*i+3] = (VAL.value) & 0xFF; + if (VAL.marker != 0) + backpatch_zmachine(VAL.marker, ARRAY_ZA, + dynamic_array_area_size - 4*MAX_GLOBAL_VARIABLES + 4*i); + } + else + { + error("Somehow created an array of shorts"); + } + } +} + +/* ------------------------------------------------------------------------- */ +/* Global and Array directives. */ +/* */ +/* Global | */ +/* | = */ +/* | */ +/* */ +/* Array */ +/* */ +/* where an array specification is: */ +/* */ +/* | -> | */ +/* | --> | ... */ +/* | string | [ [,] [;] ... ]; */ +/* | table */ +/* */ +/* ------------------------------------------------------------------------- */ + +extern void set_variable_value(int i, int32 v) +{ global_initial_value[i]=v; +} + +/* There are four ways to initialise arrays: */ + +#define UNSPECIFIED_AI -1 +#define NULLS_AI 0 +#define DATA_AI 1 +#define ASCII_AI 2 +#define BRACKET_AI 3 + +extern void make_global(int array_flag, int name_only) +{ + /* array_flag is TRUE for an Array directive, FALSE for a Global; + name_only is only TRUE for parsing an imported variable name, so + array_flag is always FALSE in that case. */ + + int32 i; + int array_type, data_type; + assembly_operand AO; + + int32 global_symbol; + const char *global_name; + debug_location_beginning beginning_debug_location = + get_token_location_beginning(); + + directive_keywords.enabled = FALSE; + get_next_token(); + i = token_value; + global_symbol = i; + global_name = token_text; + + if (!glulx_mode) { + if ((token_type==SYMBOL_TT) && (stypes[i]==GLOBAL_VARIABLE_T) + && (svals[i] >= LOWEST_SYSTEM_VAR_NUMBER)) + goto RedefinitionOfSystemVar; + } + else { + if ((token_type==SYMBOL_TT) && (stypes[i]==GLOBAL_VARIABLE_T)) + goto RedefinitionOfSystemVar; + } + + if ((token_type != SYMBOL_TT) || (!(sflags[i] & UNKNOWN_SFLAG))) + { discard_token_location(beginning_debug_location); + if (array_flag) + ebf_error("new array name", token_text); + else ebf_error("new global variable name", token_text); + panic_mode_error_recovery(); return; + } + + if ((!array_flag) && (sflags[i] & USED_SFLAG)) + error_named("Variable must be defined before use:", token_text); + + if (array_flag) + { + if (!glulx_mode) + assign_symbol(i, dynamic_array_area_size, ARRAY_T); + else + assign_symbol(i, + dynamic_array_area_size - 4*MAX_GLOBAL_VARIABLES, ARRAY_T); + if (no_arrays == MAX_ARRAYS) + memoryerror("MAX_ARRAYS", MAX_ARRAYS); + array_symbols[no_arrays] = i; + } + else + { if (!glulx_mode && no_globals==233) + { discard_token_location(beginning_debug_location); + error("All 233 global variables already declared"); + panic_mode_error_recovery(); + return; + } + if (glulx_mode && no_globals==MAX_GLOBAL_VARIABLES) + { discard_token_location(beginning_debug_location); + memoryerror("MAX_GLOBAL_VARIABLES", MAX_GLOBAL_VARIABLES); + panic_mode_error_recovery(); + return; + } + + variable_tokens[MAX_LOCAL_VARIABLES+no_globals] = i; + assign_symbol(i, MAX_LOCAL_VARIABLES+no_globals, GLOBAL_VARIABLE_T); + variable_tokens[svals[i]] = i; + + if (name_only) import_symbol(i); + else global_initial_value[no_globals++]=0; + } + + directive_keywords.enabled = TRUE; + + RedefinitionOfSystemVar: + + if (name_only) + { discard_token_location(beginning_debug_location); + return; + } + + get_next_token(); + + if ((token_type == SEP_TT) && (token_value == SEMICOLON_SEP)) + { if (array_flag) + { discard_token_location(beginning_debug_location); + ebf_error("array definition", token_text); + } + put_token_back(); + if (debugfile_switch && !array_flag) + { debug_file_printf(""); + debug_file_printf("%s", global_name); + debug_file_printf("
"); + write_debug_global_backpatch(svals[global_symbol]); + debug_file_printf("
"); + write_debug_locations + (get_token_location_end(beginning_debug_location)); + debug_file_printf(""); + } + return; + } + + if (!array_flag) + { + if ((token_type == SEP_TT) && (token_value == SETEQUALS_SEP)) + { AO = parse_expression(CONSTANT_CONTEXT); + if (!glulx_mode) { + if (AO.marker != 0) + backpatch_zmachine(AO.marker, DYNAMIC_ARRAY_ZA, + 2*(no_globals-1)); + } + else { + if (AO.marker != 0) + backpatch_zmachine(AO.marker, GLOBALVAR_ZA, + 4*(no_globals-1)); + } + global_initial_value[no_globals-1] = AO.value; + if (debugfile_switch) + { debug_file_printf(""); + debug_file_printf("%s", global_name); + debug_file_printf("
"); + write_debug_global_backpatch(svals[global_symbol]); + debug_file_printf("
"); + write_debug_locations + (get_token_location_end(beginning_debug_location)); + debug_file_printf(""); + } + return; + } + + obsolete_warning("more modern to use 'Array', not 'Global'"); + + if (!glulx_mode) { + backpatch_zmachine(ARRAY_MV, DYNAMIC_ARRAY_ZA, 2*(no_globals-1)); + global_initial_value[no_globals-1] + = dynamic_array_area_size+variables_offset; + } + else { + backpatch_zmachine(ARRAY_MV, GLOBALVAR_ZA, 4*(no_globals-1)); + global_initial_value[no_globals-1] + = dynamic_array_area_size - 4*MAX_GLOBAL_VARIABLES; + } + } + + array_type = BYTE_ARRAY; data_type = UNSPECIFIED_AI; + + if ((!array_flag) && + ((token_type==DIR_KEYWORD_TT)&&(token_value==DATA_DK))) + data_type=NULLS_AI; + else if ((!array_flag) && + ((token_type==DIR_KEYWORD_TT)&&(token_value==INITIAL_DK))) + data_type=DATA_AI; + else if ((!array_flag) && + ((token_type==DIR_KEYWORD_TT)&&(token_value==INITSTR_DK))) + data_type=ASCII_AI; + + else if ((token_type==SEP_TT)&&(token_value==ARROW_SEP)) + array_type = BYTE_ARRAY; + else if ((token_type==SEP_TT)&&(token_value==DARROW_SEP)) + array_type = WORD_ARRAY; + else if ((token_type==DIR_KEYWORD_TT)&&(token_value==STRING_DK)) + array_type = STRING_ARRAY; + else if ((token_type==DIR_KEYWORD_TT)&&(token_value==TABLE_DK)) + array_type = TABLE_ARRAY; + else if ((token_type==DIR_KEYWORD_TT)&&(token_value==BUFFER_DK)) + array_type = BUFFER_ARRAY; + else + { discard_token_location(beginning_debug_location); + if (array_flag) + ebf_error + ("'->', '-->', 'string', 'table' or 'buffer'", token_text); + else + ebf_error + ("'=', '->', '-->', 'string', 'table' or 'buffer'", token_text); + panic_mode_error_recovery(); + return; + } + + array_entry_size=1; + if ((array_type==WORD_ARRAY) || (array_type==TABLE_ARRAY)) + array_entry_size=WORDSIZE; + + get_next_token(); + if ((token_type == SEP_TT) && (token_value == SEMICOLON_SEP)) + { discard_token_location(beginning_debug_location); + error("No array size or initial values given"); + put_token_back(); + return; + } + + switch(data_type) + { case UNSPECIFIED_AI: + if ((token_type == SEP_TT) && (token_value == OPEN_SQUARE_SEP)) + data_type = BRACKET_AI; + else + { data_type = NULLS_AI; + if (token_type == DQ_TT) data_type = ASCII_AI; + get_next_token(); + if (!((token_type == SEP_TT) && (token_value == SEMICOLON_SEP))) + data_type = DATA_AI; + put_token_back(); + put_token_back(); + } + break; + case NULLS_AI: obsolete_warning("use '->' instead of 'data'"); break; + case DATA_AI: obsolete_warning("use '->' instead of 'initial'"); break; + case ASCII_AI: obsolete_warning("use '->' instead of 'initstr'"); break; + } + + array_base = dynamic_array_area_size; + + /* Leave room to write the array size in later, if string/table array */ + + if ((array_type==STRING_ARRAY) || (array_type==TABLE_ARRAY)) + dynamic_array_area_size += array_entry_size; + if (array_type==BUFFER_ARRAY) + dynamic_array_area_size += WORDSIZE; + array_types[no_arrays] = array_type; + + switch(data_type) + { + case NULLS_AI: + + AO = parse_expression(CONSTANT_CONTEXT); + + CalculatedArraySize: + + if (module_switch && (AO.marker != 0)) + { error("Array sizes must be known now, not externally defined"); + break; + } + + if (!glulx_mode) { + if ((AO.value <= 0) || (AO.value >= 32768)) + { error("An array must have between 1 and 32767 entries"); + AO.value = 1; + } + } + else { + if (AO.value <= 0 || (AO.value & 0x80000000)) + { error("An array may not have 0 or fewer entries"); + AO.value = 1; + } + } + + { for (i=0; i= 256)) + { + error("Unicode characters beyond Latin-1 cannot be used in a byte array"); + } + else + { + chars.value = unicode; + } + } + else /* Z-code */ + { + zscii = unicode_to_zscii(unicode); + if ((zscii != 5) && (zscii < 0x100)) chars.value = zscii; + else + { unicode_char_error("Character can only be used if declared in \ +advance as part of 'Zcharacter table':", unicode); + chars.value = '?'; + } + } + chars.marker = 0; + set_constant_ot(&chars); + array_entry(i, chars); + } + } + break; + + case BRACKET_AI: + + /* In this case the array is initialised to the sequence of + constant values given over a whole range of compiler-lines, + between square brackets [ and ] */ + + i = 0; + while (TRUE) + { get_next_token(); + if ((token_type == SEP_TT) && (token_value == SEMICOLON_SEP)) + continue; + if ((token_type == SEP_TT) && (token_value == CLOSE_SQUARE_SEP)) + break; + if ((token_type == SEP_TT) && (token_value == OPEN_SQUARE_SEP)) + { /* Minimal error recovery: we assume that a ] has + been missed, and the programmer is now starting + a new routine */ + + ebf_error("']'", token_text); + put_token_back(); break; + } + put_token_back(); + array_entry(i, parse_expression(ARRAY_CONTEXT)); + i++; + } + } + + finish_array(i); + + if (debugfile_switch) + { debug_file_printf(""); + debug_file_printf("%s", global_name); + debug_file_printf(""); + write_debug_array_backpatch(svals[global_symbol]); + debug_file_printf(""); + debug_file_printf + ("%d", + dynamic_array_area_size - array_base); + debug_file_printf + ("%d", + array_entry_size); + debug_file_printf + ("%s", + (array_type == STRING_ARRAY || array_type == TABLE_ARRAY) ? + "true" : "false"); + get_next_token(); + write_debug_locations(get_token_location_end(beginning_debug_location)); + put_token_back(); + debug_file_printf(""); + } + + if ((array_type==BYTE_ARRAY) || (array_type==WORD_ARRAY)) i--; + if (array_type==BUFFER_ARRAY) i+=WORDSIZE-1; + array_sizes[no_arrays++] = i; +} + +extern int32 begin_table_array(void) +{ + /* The "box" statement needs to be able to construct (static) table + arrays of strings like this */ + + array_base = dynamic_array_area_size; + array_entry_size = WORDSIZE; + + /* Leave room to write the array size in later */ + + dynamic_array_area_size += array_entry_size; + + if (!glulx_mode) + return array_base; + else + return array_base - WORDSIZE * MAX_GLOBAL_VARIABLES; +} + +extern int32 begin_word_array(void) +{ + /* The "random(a, b, ...)" function needs to be able to construct + (static) word arrays like this */ + + array_base = dynamic_array_area_size; + array_entry_size = WORDSIZE; + + if (!glulx_mode) + return array_base; + else + return array_base - WORDSIZE * MAX_GLOBAL_VARIABLES; +} + +/* ========================================================================= */ +/* Data structure management routines */ +/* ------------------------------------------------------------------------- */ + +extern void init_arrays_vars(void) +{ dynamic_array_area = NULL; + global_initial_value = NULL; + array_sizes = NULL; array_symbols = NULL; array_types = NULL; +} + +extern void arrays_begin_pass(void) +{ no_arrays = 0; + if (!glulx_mode) + no_globals=0; + else + no_globals=11; + dynamic_array_area_size = WORDSIZE * MAX_GLOBAL_VARIABLES; +} + +extern void arrays_allocate_arrays(void) +{ dynamic_array_area = my_calloc(sizeof(int), MAX_STATIC_DATA, + "static data"); + array_sizes = my_calloc(sizeof(int), MAX_ARRAYS, "array sizes"); + array_types = my_calloc(sizeof(int), MAX_ARRAYS, "array types"); + array_symbols = my_calloc(sizeof(int32), MAX_ARRAYS, "array symbols"); + global_initial_value = my_calloc(sizeof(int32), MAX_GLOBAL_VARIABLES, + "global values"); +} + +extern void arrays_free_arrays(void) +{ my_free(&dynamic_array_area, "static data"); + my_free(&global_initial_value, "global values"); + my_free(&array_sizes, "array sizes"); + my_free(&array_types, "array sizes"); + my_free(&array_symbols, "array sizes"); +} + +/* ========================================================================= */ diff --git a/asm.c b/asm.c new file mode 100644 index 0000000..a144939 --- /dev/null +++ b/asm.c @@ -0,0 +1,3189 @@ +/* ------------------------------------------------------------------------- */ +/* "asm" : The Inform assembler */ +/* */ +/* Copyright (c) Graham Nelson 1993 - 2016 */ +/* */ +/* This file is part of Inform. */ +/* */ +/* Inform is free software: you can redistribute it and/or modify */ +/* it under the terms of the GNU General Public License as published by */ +/* the Free Software Foundation, either version 3 of the License, or */ +/* (at your option) any later version. */ +/* */ +/* Inform is distributed in the hope that it will be useful, */ +/* but WITHOUT ANY WARRANTY; without even the implied warranty of */ +/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ +/* GNU General Public License for more details. */ +/* */ +/* You should have received a copy of the GNU General Public License */ +/* along with Inform. If not, see https://gnu.org/licenses/ */ +/* */ +/* ------------------------------------------------------------------------- */ + +#include "header.h" + +uchar *zcode_holding_area; /* Area holding code yet to be transferred + to either zcode_area or temp file no 1 */ +uchar *zcode_markers; /* Bytes holding marker values for this + code */ +static int zcode_ha_size; /* Number of bytes in holding area */ + +memory_block zcode_area; /* Block to hold assembled code (if + temporary files are not being used) */ + +int32 zmachine_pc; /* PC position of assembly (byte offset + from start of Z-code area) */ + +int32 no_instructions; /* Number of instructions assembled */ +int execution_never_reaches_here, /* TRUE if the current PC value in the + code area cannot be reached: e.g. if + the previous instruction was a "quit" + opcode and no label is set to here */ + next_label, /* Used to count the labels created all + over Inform in current routine, from 0 */ + next_sequence_point; /* Likewise, for sequence points */ +int no_sequence_points; /* Kept for statistics purposes only */ + +static int label_moved_error_already_given; + /* When one label has moved, all subsequent + ones probably have too, and this flag + suppresses the runaway chain of error + messages which would otherwise result */ + +int sequence_point_follows; /* Will the next instruction assembled */ + /* be at a sequence point in the routine? */ + +int uses_unicode_features; /* Makes use of Glulx Unicode (3.0) + features? */ +int uses_memheap_features; /* Makes use of Glulx mem/heap (3.1) + features? */ +int uses_acceleration_features; /* Makes use of Glulx acceleration (3.1.1) + features? */ +int uses_float_features; /* Makes use of Glulx floating-point (3.1.2) + features? */ + +debug_location statement_debug_location; + /* Location of current statement */ + + +int32 *variable_tokens; /* The allocated size is + (MAX_LOCAL_VARIABLES + + MAX_GLOBAL_VARIABLES). The entries + MAX_LOCAL_VARIABLES and up give the + symbol table index for the names of + the global variables */ +int *variable_usage; /* TRUE if referred to, FALSE otherwise */ + +assembly_instruction AI; /* A structure used to hold the full + specification of a single Z-code + instruction: effectively this is the + input to the routine + assemble_instruction() */ + +static char opcode_syntax_string[128]; /* Text buffer holding the correct + syntax for an opcode: used to produce + helpful assembler error messages */ + +static int routine_symbol; /* The symbol index of the routine currently + being compiled */ +static char *routine_name; /* The name of the routine currently being + compiled */ +static int routine_locals; /* The number of local variables used by + the routine currently being compiled */ + +static int32 routine_start_pc; + +int32 *named_routine_symbols; + +static void transfer_routine_z(void); +static void transfer_routine_g(void); + +/* ------------------------------------------------------------------------- */ +/* Label data */ +/* ------------------------------------------------------------------------- */ + +static int first_label, last_label; +static int32 *label_offsets; /* Double-linked list of label offsets */ +static int *label_next, /* (i.e. zmachine_pc values) in PC order */ + *label_prev; +static int32 *label_symbols; /* Symbol numbers if defined in source */ + +static int *sequence_point_labels; + /* Label numbers for each */ +static debug_location *sequence_point_locations; + /* Source code references for each */ + /* (used for making debugging file) */ + +static void set_label_offset(int label, int32 offset) +{ + if (label >= MAX_LABELS) memoryerror("MAX_LABELS", MAX_LABELS); + + label_offsets[label] = offset; + if (last_label == -1) + { label_prev[label] = -1; + first_label = label; + } + else + { label_prev[label] = last_label; + label_next[last_label] = label; + } + last_label = label; + label_next[label] = -1; + label_symbols[label] = -1; +} + +/* ------------------------------------------------------------------------- */ +/* Useful tool for building operands */ +/* ------------------------------------------------------------------------- */ + +extern void set_constant_ot(assembly_operand *AO) +{ + if (!glulx_mode) { + if (AO->value >= 0 && AO->value <= 255) + AO->type = SHORT_CONSTANT_OT; + else + AO->type = LONG_CONSTANT_OT; + } + else { + if (AO->value == 0) + AO->type = ZEROCONSTANT_OT; + else if (AO->value >= -0x80 && AO->value < 0x80) + AO->type = BYTECONSTANT_OT; + else if (AO->value >= -0x8000 && AO->value < 0x8000) + AO->type = HALFCONSTANT_OT; + else + AO->type = CONSTANT_OT; + } +} + +extern int is_constant_ot(int otval) +{ + if (!glulx_mode) { + return ((otval == LONG_CONSTANT_OT) + || (otval == SHORT_CONSTANT_OT)); + } + else { + return ((otval == CONSTANT_OT) + || (otval == HALFCONSTANT_OT) + || (otval == BYTECONSTANT_OT) + || (otval == ZEROCONSTANT_OT)); + } +} + +extern int is_variable_ot(int otval) +{ + if (!glulx_mode) { + return (otval == VARIABLE_OT); + } + else { + return ((otval == LOCALVAR_OT) + || (otval == GLOBALVAR_OT)); + } +} + +/* ------------------------------------------------------------------------- */ +/* Used in printing assembly traces */ +/* ------------------------------------------------------------------------- */ + +extern char *variable_name(int32 i) +{ + if (i==0) return("sp"); + if (i= 256 && i < 286) + { if (i - 256 < NUMBER_SYSTEM_FUNCTIONS) return system_functions.keywords[i - 256]; + return ""; + } + } + else { + switch (i - MAX_LOCAL_VARIABLES) { + case 0: return "temp_global"; + case 1: return "temp__global2"; + case 2: return "temp__global3"; + case 3: return "temp__global4"; + case 4: return "self"; + case 5: return "sender"; + case 6: return "sw__var"; + case 7: return "sys__glob0"; + case 8: return "sys__glob1"; + case 9: return "sys__glob2"; + case 10: return "sys_statusline_flag"; + } + } + + return ((char *) symbs[variable_tokens[i]]); +} + +static void print_operand_z(assembly_operand o) +{ switch(o.type) + { case EXPRESSION_OT: printf("expr_"); break; + case LONG_CONSTANT_OT: printf("long_"); break; + case SHORT_CONSTANT_OT: printf("short_"); break; + case VARIABLE_OT: + if (o.value==0) { printf("sp"); return; } + printf("%s", variable_name(o.value)); return; + case OMITTED_OT: printf(""); return; + } + printf("%d", o.value); +} + +static void print_operand_g(assembly_operand o) +{ + switch (o.type) { + case EXPRESSION_OT: printf("expr_"); break; + case CONSTANT_OT: printf("long_"); break; + case HALFCONSTANT_OT: printf("short_"); break; + case BYTECONSTANT_OT: printf("byte_"); break; + case ZEROCONSTANT_OT: printf("zero_"); return; + case DEREFERENCE_OT: printf("*"); break; + case GLOBALVAR_OT: + printf("%s (global_%d)", variable_name(o.value), o.value); + return; + case LOCALVAR_OT: + if (o.value == 0) + printf("stackptr"); + else + printf("%s (local_%d)", variable_name(o.value), o.value-1); + return; + case SYSFUN_OT: + if (o.value >= 0 && o.value < NUMBER_SYSTEM_FUNCTIONS) + printf("%s", system_functions.keywords[o.value]); + else + printf(""); + return; + case OMITTED_OT: printf(""); return; + default: printf("???_"); break; + } + printf("%d", o.value); +} + +extern void print_operand(assembly_operand o) +{ + if (!glulx_mode) + print_operand_z(o); + else + print_operand_g(o); +} + +/* ------------------------------------------------------------------------- */ +/* Writing bytes to the code area */ +/* ------------------------------------------------------------------------- */ + +static void byteout(int32 i, int mv) +{ if (zcode_ha_size >= MAX_ZCODE_SIZE) + memoryerror("MAX_ZCODE_SIZE",MAX_ZCODE_SIZE); + zcode_markers[zcode_ha_size] = (uchar) mv; + zcode_holding_area[zcode_ha_size++] = (uchar) i; + zmachine_pc++; +} + +/* ------------------------------------------------------------------------- */ +/* A database of the 115 canonical Infocom opcodes in Versions 3 to 6 */ +/* And of the however-many-there-are Glulx opcode */ +/* ------------------------------------------------------------------------- */ + +typedef struct opcodez +{ uchar *name; /* Lower case standard name */ + int version1; /* Valid from this version number... */ + int version2; /* ...until this one (or forever if this is 0) */ + int extension; /* In later versions, see this line in extension table: + if -1, the opcode is illegal in later versions */ + int code; /* Opcode number within its operand-number block */ + int flags; /* Flags (see below) */ + int op_rules; /* Any unusual operand rule applying (see below) */ + int flags2_set; /* If not zero, set this bit in Flags 2 in the header + of any game using the opcode */ + int no; /* Number of operands (see below) */ +} opcodez; + +typedef struct opcodeg +{ uchar *name; /* Lower case standard name */ + int32 code; /* Opcode number */ + int flags; /* Flags (see below) */ + int op_rules; /* Any unusual operand rule applying (see below) */ + int no; /* Number of operands */ +} opcodeg; + + /* Flags which can be set */ + +#define St 1 /* Store */ +#define Br 2 /* Branch */ +#define Rf 4 /* "Return flag": execution never continues after this + opcode (e.g., is a return or unconditional jump) */ +#define St2 8 /* Store2 (second-to-last operand is store (Glulx)) */ + + /* Codes for any unusual operand assembly rules */ + + /* Z-code: */ + +#define VARIAB 1 /* First operand expected to be a variable name and + assembled to a short constant: the variable number */ +#define TEXT 2 /* One text operand, to be Z-encoded into the program */ +#define LABEL 3 /* One operand, a label, given as long constant offset */ +#define CALL 4 /* First operand is name of a routine, to be assembled + as long constant (the routine's packed address): + as if the name were prefixed by #r$ */ + + /* Glulx: (bit flags for Glulx VM features) */ + +#define GOP_Unicode 1 /* uses_unicode_features */ +#define GOP_MemHeap 2 /* uses_memheap_features */ +#define GOP_Acceleration 4 /* uses_acceleration_features */ +#define GOP_Float 8 /* uses_float_features */ + + /* Codes for the number of operands */ + +#define TWO 1 /* 2 (with certain types of operand, compiled as VAR) */ +#define VAR 2 /* 0 to 4 */ +#define VAR_LONG 3 /* 0 to 8 */ +#define ONE 4 /* 1 */ +#define ZERO 5 /* 0 */ +#define EXT 6 /* Extended opcode set VAR: 0 to 4 */ +#define EXT_LONG 7 /* Extended: 0 to 8 (not used by the canonical opcodes) */ + +static opcodez opcodes_table_z[] = +{ + /* Opcodes introduced in Version 3 */ + +/* 0 */ { (uchar *) "je", 3, 0, -1, 0x01, Br, 0, 0, TWO }, +/* 1 */ { (uchar *) "jl", 3, 0, -1, 0x02, Br, 0, 0, TWO }, +/* 2 */ { (uchar *) "jg", 3, 0, -1, 0x03, Br, 0, 0, TWO }, +/* 3 */ { (uchar *) "dec_chk", 3, 0, -1, 0x04, Br, VARIAB, 0, TWO }, +/* 4 */ { (uchar *) "inc_chk", 3, 0, -1, 0x05, Br, VARIAB, 0, TWO }, +/* 5 */ { (uchar *) "jin", 3, 0, -1, 0x06, Br, 0, 0, TWO }, +/* 6 */ { (uchar *) "test", 3, 0, -1, 0x07, Br, 0, 0, TWO }, +/* 7 */ { (uchar *) "or", 3, 0, -1, 0x08, St, 0, 0, TWO }, +/* 8 */ { (uchar *) "and", 3, 0, -1, 0x09, St, 0, 0, TWO }, +/* 9 */ { (uchar *) "test_attr", 3, 0, -1, 0x0A, Br, 0, 0, TWO }, +/* 10 */ {(uchar *) "set_attr", 3, 0, -1, 0x0B, 0, 0, 0, TWO }, +/* 11 */ {(uchar *) "clear_attr", 3, 0, -1, 0x0C, 0, 0, 0, TWO }, +/* 12 */ {(uchar *) "store", 3, 0, -1, 0x0D, 0, VARIAB, 0, TWO }, +/* 13 */ {(uchar *) "insert_obj", 3, 0, -1, 0x0E, 0, 0, 0, TWO }, +/* 14 */ {(uchar *) "loadw", 3, 0, -1, 0x0F, St, 0, 0, TWO }, +/* 15 */ {(uchar *) "loadb", 3, 0, -1, 0x10, St, 0, 0, TWO }, +/* 16 */ {(uchar *) "get_prop", 3, 0, -1, 0x11, St, 0, 0, TWO }, +/* 17 */ {(uchar *) "get_prop_addr", 3, 0, -1, 0x12, St, 0, 0, TWO }, +/* 18 */ {(uchar *) "get_next_prop", 3, 0, -1, 0x13, St, 0, 0, TWO }, +/* 19 */ {(uchar *) "add", 3, 0, -1, 0x14, St, 0, 0, TWO }, +/* 20 */ {(uchar *) "sub", 3, 0, -1, 0x15, St, 0, 0, TWO }, +/* 21 */ {(uchar *) "mul", 3, 0, -1, 0x16, St, 0, 0, TWO }, +/* 22 */ {(uchar *) "div", 3, 0, -1, 0x17, St, 0, 0, TWO }, +/* 23 */ {(uchar *) "mod", 3, 0, -1, 0x18, St, 0, 0, TWO }, +/* 24 */ {(uchar *) "call", 3, 0, -1, 0x20, St, CALL, 0, VAR }, +/* 25 */ {(uchar *) "storew", 3, 0, -1, 0x21, 0, 0, 0, VAR }, +/* 26 */ {(uchar *) "storeb", 3, 0, -1, 0x22, 0, 0, 0, VAR }, +/* 27 */ {(uchar *) "put_prop", 3, 0, -1, 0x23, 0, 0, 0, VAR }, + /* This is the version of "read" called "sread" internally: */ +/* 28 */ {(uchar *) "read", 3, 0, -1, 0x24, 0, 0, 0, VAR }, +/* 29 */ {(uchar *) "print_char", 3, 0, -1, 0x25, 0, 0, 0, VAR }, +/* 30 */ {(uchar *) "print_num", 3, 0, -1, 0x26, 0, 0, 0, VAR }, +/* 31 */ {(uchar *) "random", 3, 0, -1, 0x27, St, 0, 0, VAR }, +/* 32 */ {(uchar *) "push", 3, 0, -1, 0x28, 0, 0, 0, VAR }, +/* 33 */ {(uchar *) "pull", 3, 5, 6, 0x29, 0, VARIAB, 0, VAR }, +/* 34 */ {(uchar *) "split_window", 3, 0, -1, 0x2A, 0, 0, 0, VAR }, +/* 35 */ {(uchar *) "set_window", 3, 0, -1, 0x2B, 0, 0, 0, VAR }, +/* 36 */ {(uchar *) "output_stream", 3, 0, -1, 0x33, 0, 0, 0, VAR }, +/* 37 */ {(uchar *) "input_stream", 3, 0, -1, 0x34, 0, 0, 0, VAR }, +/* 38 */ {(uchar *) "sound_effect", 3, 0, -1, 0x35, 0, 0, 7, VAR }, +/* 39 */ {(uchar *) "jz", 3, 0, -1, 0x00, Br, 0, 0, ONE }, +/* 40 */ {(uchar *) "get_sibling", 3, 0, -1, 0x01, St+Br, 0, 0, ONE }, +/* 41 */ {(uchar *) "get_child", 3, 0, -1, 0x02, St+Br, 0, 0, ONE }, +/* 42 */ {(uchar *) "get_parent", 3, 0, -1, 0x03, St, 0, 0, ONE }, +/* 43 */ {(uchar *) "get_prop_len", 3, 0, -1, 0x04, St, 0, 0, ONE }, +/* 44 */ {(uchar *) "inc", 3, 0, -1, 0x05, 0, VARIAB, 0, ONE }, +/* 45 */ {(uchar *) "dec", 3, 0, -1, 0x06, 0, VARIAB, 0, ONE }, +/* 46 */ {(uchar *) "print_addr", 3, 0, -1, 0x07, 0, 0, 0, ONE }, +/* 47 */ {(uchar *) "remove_obj", 3, 0, -1, 0x09, 0, 0, 0, ONE }, +/* 48 */ {(uchar *) "print_obj", 3, 0, -1, 0x0A, 0, 0, 0, ONE }, +/* 49 */ {(uchar *) "ret", 3, 0, -1, 0x0B, Rf, 0, 0, ONE }, +/* 50 */ {(uchar *) "jump", 3, 0, -1, 0x0C, Rf, LABEL, 0, ONE }, +/* 51 */ {(uchar *) "print_paddr", 3, 0, -1, 0x0D, 0, 0, 0, ONE }, +/* 52 */ {(uchar *) "load", 3, 0, -1, 0x0E, St, VARIAB, 0, ONE }, +/* 53 */ {(uchar *) "not", 3, 3, 0, 0x0F, St, 0, 0, ONE }, +/* 54 */ {(uchar *) "rtrue", 3, 0, -1, 0x00, Rf, 0, 0,ZERO }, +/* 55 */ {(uchar *) "rfalse", 3, 0, -1, 0x01, Rf, 0, 0,ZERO }, +/* 56 */ {(uchar *) "print", 3, 0, -1, 0x02, 0, TEXT, 0,ZERO }, +/* 57 */ {(uchar *) "print_ret", 3, 0, -1, 0x03, Rf, TEXT, 0,ZERO }, +/* 58 */ {(uchar *) "nop", 3, 0, -1, 0x04, 0, 0, 0,ZERO }, +/* 59 */ {(uchar *) "save", 3, 3, 1, 0x05, Br, 0, 0,ZERO }, +/* 60 */ {(uchar *) "restore", 3, 3, 2, 0x06, Br, 0, 0,ZERO }, +/* 61 */ {(uchar *) "restart", 3, 0, -1, 0x07, 0, 0, 0,ZERO }, +/* 62 */ {(uchar *) "ret_popped", 3, 0, -1, 0x08, Rf, 0, 0,ZERO }, +/* 63 */ {(uchar *) "pop", 3, 4, -1, 0x09, 0, 0, 0,ZERO }, +/* 64 */ {(uchar *) "quit", 3, 0, -1, 0x0A, Rf, 0, 0,ZERO }, +/* 65 */ {(uchar *) "new_line", 3, 0, -1, 0x0B, 0, 0, 0,ZERO }, +/* 66 */ {(uchar *) "show_status", 3, 3, -1, 0x0C, 0, 0, 0,ZERO }, +/* 67 */ {(uchar *) "verify", 3, 0, -1, 0x0D, Br, 0, 0,ZERO }, + + /* Opcodes introduced in Version 4 */ + +/* 68 */ {(uchar *) "call_2s", 4, 0, -1, 0x19, St, CALL, 0, TWO }, +/* 69 */ {(uchar *) "call_vs", 4, 0, -1, 0x20, St, CALL, 0, VAR }, + /* This is the version of "read" called "aread" internally: */ +/* 70 */ {(uchar *) "read", 4, 0, -1, 0x24, St, 0, 0, VAR }, +/* 71 */ {(uchar *) "call_vs2", 4, 0, -1, 0x2C, St, CALL, 0, + VAR_LONG }, +/* 72 */ {(uchar *) "erase_window", 4, 0, -1, 0x2D, 0, 0, 0, VAR }, +/* 73 */ {(uchar *) "erase_line", 4, 0, -1, 0x2E, 0, 0, 0, VAR }, +/* 74 */ {(uchar *) "set_cursor", 4, 0, -1, 0x2F, 0, 0, 0, VAR }, +/* 75 */ {(uchar *) "get_cursor", 4, 0, -1, 0x30, 0, 0, 0, VAR }, +/* 76 */ {(uchar *) "set_text_style", 4, 0, -1, 0x31, 0, 0, 0, VAR }, +/* 77 */ {(uchar *) "buffer_mode", 4, 0, -1, 0x32, 0, 0, 0, VAR }, +/* 78 */ {(uchar *) "read_char", 4, 0, -1, 0x36, St, 0, 0, VAR }, +/* 79 */ {(uchar *) "scan_table", 4, 0, -1, 0x37, St+Br, 0, 0, VAR }, +/* 80 */ {(uchar *) "call_1s", 4, 0, -1, 0x08, St, CALL, 0, ONE }, + + /* Opcodes introduced in Version 5 */ + +/* 81 */ {(uchar *) "call_2n", 5, 0, -1, 0x1a, 0, CALL, 0, TWO }, +/* 82 */ {(uchar *) "set_colour", 5, 0, -1, 0x1b, 0, 0, 6, TWO }, +/* 83 */ {(uchar *) "throw", 5, 0, -1, 0x1c, 0, 0, 0, TWO }, +/* 84 */ {(uchar *) "call_vn", 5, 0, -1, 0x39, 0, CALL, 0, VAR }, +/* 85 */ {(uchar *) "call_vn2", 5, 0, -1, 0x3a, 0, CALL, 0, + VAR_LONG }, +/* 86 */ {(uchar *) "tokenise", 5, 0, -1, 0x3b, 0, 0, 0, VAR }, +/* 87 */ {(uchar *) "encode_text", 5, 0, -1, 0x3c, 0, 0, 0, VAR }, +/* 88 */ {(uchar *) "copy_table", 5, 0, -1, 0x3d, 0, 0, 0, VAR }, +/* 89 */ {(uchar *) "print_table", 5, 0, -1, 0x3e, 0, 0, 0, VAR }, +/* 90 */ {(uchar *) "check_arg_count", 5, 0, -1, 0x3f, Br, 0, 0, VAR }, +/* 91 */ {(uchar *) "call_1n", 5, 0, -1, 0x0F, 0, CALL, 0, ONE }, +/* 92 */ {(uchar *) "catch", 5, 0, -1, 0x09, St, 0, 0, ZERO }, +/* 93 */ {(uchar *) "piracy", 5, 0, -1, 0x0F, Br, 0, 0, ZERO }, +/* 94 */ {(uchar *) "log_shift", 5, 0, -1, 0x02, St, 0, 0, EXT }, +/* 95 */ {(uchar *) "art_shift", 5, 0, -1, 0x03, St, 0, 0, EXT }, +/* 96 */ {(uchar *) "set_font", 5, 0, -1, 0x04, St, 0, 0, EXT }, +/* 97 */ {(uchar *) "save_undo", 5, 0, -1, 0x09, St, 0, 4, EXT }, +/* 98 */ {(uchar *) "restore_undo", 5, 0, -1, 0x0A, St, 0, 4, EXT }, + + /* Opcodes introduced in Version 6 */ + +/* 99 */ { (uchar *) "draw_picture", 6, 6, -1, 0x05, 0, 0, 3, EXT }, +/* 100 */ { (uchar *) "picture_data", 6, 6, -1, 0x06, Br, 0, 3, EXT }, +/* 101 */ { (uchar *) "erase_picture", 6, 6, -1, 0x07, 0, 0, 3, EXT }, +/* 102 */ { (uchar *) "set_margins", 6, 6, -1, 0x08, 0, 0, 0, EXT }, +/* 103 */ { (uchar *) "move_window", 6, 6, -1, 0x10, 0, 0, 0, EXT }, +/* 104 */ { (uchar *) "window_size", 6, 6, -1, 0x11, 0, 0, 0, EXT }, +/* 105 */ { (uchar *) "window_style", 6, 6, -1, 0x12, 0, 0, 0, EXT }, +/* 106 */ { (uchar *) "get_wind_prop", 6, 6, -1, 0x13, St, 0, 0, EXT }, +/* 107 */ { (uchar *) "scroll_window", 6, 6, -1, 0x14, 0, 0, 0, EXT }, +/* 108 */ { (uchar *) "pop_stack", 6, 6, -1, 0x15, 0, 0, 0, EXT }, +/* 109 */ { (uchar *) "read_mouse", 6, 6, -1, 0x16, 0, 0, 5, EXT }, +/* 110 */ { (uchar *) "mouse_window", 6, 6, -1, 0x17, 0, 0, 5, EXT }, +/* 111 */ { (uchar *) "push_stack", 6, 6, -1, 0x18, Br, 0, 0, EXT }, +/* 112 */ { (uchar *) "put_wind_prop", 6, 6, -1, 0x19, 0, 0, 0, EXT }, +/* 113 */ { (uchar *) "print_form", 6, 6, -1, 0x1a, 0, 0, 0, EXT }, +/* 114 */ { (uchar *) "make_menu", 6, 6, -1, 0x1b, Br, 0, 8, EXT }, +/* 115 */ { (uchar *) "picture_table", 6, 6, -1, 0x1c, 0, 0, 3, EXT }, + + /* Opcodes introduced in Z-Machine Specification Standard 1.0 */ + +/* 116 */ { (uchar *) "print_unicode", 5, 0, -1, 0x0b, 0, 0, 0, EXT }, +/* 117 */ { (uchar *) "check_unicode", 5, 0, -1, 0x0c, St, 0, 0, EXT } +}; + + /* Subsequent forms for opcodes whose meaning changes with version */ + +static opcodez extension_table_z[] = +{ +/* 0 */ { (uchar *) "not", 4, 4, 3, 0x0F, St, 0, 0, ONE }, +/* 1 */ { (uchar *) "save", 4, 4, 4, 0x05, St, 0, 0,ZERO }, +/* 2 */ { (uchar *) "restore", 4, 4, 5, 0x06, St, 0, 0,ZERO }, +/* 3 */ { (uchar *) "not", 5, 0, -1, 0x38, St, 0, 0, VAR }, +/* 4 */ { (uchar *) "save", 5, 0, -1, 0x00, St, 0, 0, EXT }, +/* 5 */ { (uchar *) "restore", 5, 0, -1, 0x01, St, 0, 0, EXT }, +/* 6 */ { (uchar *) "pull", 6, 6, -1, 0x29, St, 0, 0, VAR } +}; + +static opcodez invalid_opcode_z = + { (uchar *) "invalid", 0, 0, -1, 0xff, 0, 0, 0, ZERO}; + +static opcodez custom_opcode_z; + +/* Note that this table assumes that all opcodes have at most two + branch-label or store operands, and that if they exist, they are the + last operands. Glulx does not actually guarantee this. But it is + true for all opcodes in the current Glulx spec, so we will assume + it for now. + + Also note that Inform can only compile branches to constant offsets, + even though the Glulx machine can handle stack or memory-loaded + operands in a branch instruction. +*/ + +static opcodeg opcodes_table_g[] = { + { (uchar *) "nop", 0x00, 0, 0, 0 }, + { (uchar *) "add", 0x10, St, 0, 3 }, + { (uchar *) "sub", 0x11, St, 0, 3 }, + { (uchar *) "mul", 0x12, St, 0, 3 }, + { (uchar *) "div", 0x13, St, 0, 3 }, + { (uchar *) "mod", 0x14, St, 0, 3 }, + { (uchar *) "neg", 0x15, St, 0, 2 }, + { (uchar *) "bitand", 0x18, St, 0, 3 }, + { (uchar *) "bitor", 0x19, St, 0, 3 }, + { (uchar *) "bitxor", 0x1A, St, 0, 3 }, + { (uchar *) "bitnot", 0x1B, St, 0, 2 }, + { (uchar *) "shiftl", 0x1C, St, 0, 3 }, + { (uchar *) "sshiftr", 0x1D, St, 0, 3 }, + { (uchar *) "ushiftr", 0x1E, St, 0, 3 }, + { (uchar *) "jump", 0x20, Br|Rf, 0, 1 }, + { (uchar *) "jz", 0x22, Br, 0, 2 }, + { (uchar *) "jnz", 0x23, Br, 0, 2 }, + { (uchar *) "jeq", 0x24, Br, 0, 3 }, + { (uchar *) "jne", 0x25, Br, 0, 3 }, + { (uchar *) "jlt", 0x26, Br, 0, 3 }, + { (uchar *) "jge", 0x27, Br, 0, 3 }, + { (uchar *) "jgt", 0x28, Br, 0, 3 }, + { (uchar *) "jle", 0x29, Br, 0, 3 }, + { (uchar *) "jltu", 0x2A, Br, 0, 3 }, + { (uchar *) "jgeu", 0x2B, Br, 0, 3 }, + { (uchar *) "jgtu", 0x2C, Br, 0, 3 }, + { (uchar *) "jleu", 0x2D, Br, 0, 3 }, + { (uchar *) "call", 0x30, St, 0, 3 }, + { (uchar *) "return", 0x31, Rf, 0, 1 }, + { (uchar *) "catch", 0x32, Br|St, 0, 2 }, + { (uchar *) "throw", 0x33, Rf, 0, 2 }, + { (uchar *) "tailcall", 0x34, Rf, 0, 2 }, + { (uchar *) "copy", 0x40, St, 0, 2 }, + { (uchar *) "copys", 0x41, St, 0, 2 }, + { (uchar *) "copyb", 0x42, St, 0, 2 }, + { (uchar *) "sexs", 0x44, St, 0, 2 }, + { (uchar *) "sexb", 0x45, St, 0, 2 }, + { (uchar *) "aload", 0x48, St, 0, 3 }, + { (uchar *) "aloads", 0x49, St, 0, 3 }, + { (uchar *) "aloadb", 0x4A, St, 0, 3 }, + { (uchar *) "aloadbit", 0x4B, St, 0, 3 }, + { (uchar *) "astore", 0x4C, 0, 0, 3 }, + { (uchar *) "astores", 0x4D, 0, 0, 3 }, + { (uchar *) "astoreb", 0x4E, 0, 0, 3 }, + { (uchar *) "astorebit", 0x4F, 0, 0, 3 }, + { (uchar *) "stkcount", 0x50, St, 0, 1 }, + { (uchar *) "stkpeek", 0x51, St, 0, 2 }, + { (uchar *) "stkswap", 0x52, 0, 0, 0 }, + { (uchar *) "stkroll", 0x53, 0, 0, 2 }, + { (uchar *) "stkcopy", 0x54, 0, 0, 1 }, + { (uchar *) "streamchar", 0x70, 0, 0, 1 }, + { (uchar *) "streamnum", 0x71, 0, 0, 1 }, + { (uchar *) "streamstr", 0x72, 0, 0, 1 }, + { (uchar *) "gestalt", 0x0100, St, 0, 3 }, + { (uchar *) "debugtrap", 0x0101, 0, 0, 1 }, + { (uchar *) "getmemsize", 0x0102, St, 0, 1 }, + { (uchar *) "setmemsize", 0x0103, St, 0, 2 }, + { (uchar *) "jumpabs", 0x0104, Rf, 0, 1 }, + { (uchar *) "random", 0x0110, St, 0, 2 }, + { (uchar *) "setrandom", 0x0111, 0, 0, 1 }, + { (uchar *) "quit", 0x0120, Rf, 0, 0 }, + { (uchar *) "verify", 0x0121, St, 0, 1 }, + { (uchar *) "restart", 0x0122, 0, 0, 0 }, + { (uchar *) "save", 0x0123, St, 0, 2 }, + { (uchar *) "restore", 0x0124, St, 0, 2 }, + { (uchar *) "saveundo", 0x0125, St, 0, 1 }, + { (uchar *) "restoreundo", 0x0126, St, 0, 1 }, + { (uchar *) "protect", 0x0127, 0, 0, 2 }, + { (uchar *) "glk", 0x0130, St, 0, 3 }, + { (uchar *) "getstringtbl", 0x0140, St, 0, 1 }, + { (uchar *) "setstringtbl", 0x0141, 0, 0, 1 }, + { (uchar *) "getiosys", 0x0148, St|St2, 0, 2 }, + { (uchar *) "setiosys", 0x0149, 0, 0, 2 }, + { (uchar *) "linearsearch", 0x0150, St, 0, 8 }, + { (uchar *) "binarysearch", 0x0151, St, 0, 8 }, + { (uchar *) "linkedsearch", 0x0152, St, 0, 7 }, + { (uchar *) "callf", 0x0160, St, 0, 2 }, + { (uchar *) "callfi", 0x0161, St, 0, 3 }, + { (uchar *) "callfii", 0x0162, St, 0, 4 }, + { (uchar *) "callfiii", 0x0163, St, 0, 5 }, + { (uchar *) "streamunichar", 0x73, 0, GOP_Unicode, 1 }, + { (uchar *) "mzero", 0x170, 0, GOP_MemHeap, 2 }, + { (uchar *) "mcopy", 0x171, 0, GOP_MemHeap, 3 }, + { (uchar *) "malloc", 0x178, St, GOP_MemHeap, 2 }, + { (uchar *) "mfree", 0x179, 0, GOP_MemHeap, 1 }, + { (uchar *) "accelfunc", 0x180, 0, GOP_Acceleration, 2 }, + { (uchar *) "accelparam", 0x181, 0, GOP_Acceleration, 2 }, + { (uchar *) "numtof", 0x190, St, GOP_Float, 2 }, + { (uchar *) "ftonumz", 0x191, St, GOP_Float, 2 }, + { (uchar *) "ftonumn", 0x192, St, GOP_Float, 2 }, + { (uchar *) "ceil", 0x198, St, GOP_Float, 2 }, + { (uchar *) "floor", 0x199, St, GOP_Float, 2 }, + { (uchar *) "fadd", 0x1A0, St, GOP_Float, 3 }, + { (uchar *) "fsub", 0x1A1, St, GOP_Float, 3 }, + { (uchar *) "fmul", 0x1A2, St, GOP_Float, 3 }, + { (uchar *) "fdiv", 0x1A3, St, GOP_Float, 3 }, + { (uchar *) "fmod", 0x1A4, St|St2, GOP_Float, 4 }, + { (uchar *) "sqrt", 0x1A8, St, GOP_Float, 2 }, + { (uchar *) "exp", 0x1A9, St, GOP_Float, 2 }, + { (uchar *) "log", 0x1AA, St, GOP_Float, 2 }, + { (uchar *) "pow", 0x1AB, St, GOP_Float, 3 }, + { (uchar *) "sin", 0x1B0, St, GOP_Float, 2 }, + { (uchar *) "cos", 0x1B1, St, GOP_Float, 2 }, + { (uchar *) "tan", 0x1B2, St, GOP_Float, 2 }, + { (uchar *) "asin", 0x1B3, St, GOP_Float, 2 }, + { (uchar *) "acos", 0x1B4, St, GOP_Float, 2 }, + { (uchar *) "atan", 0x1B5, St, GOP_Float, 2 }, + { (uchar *) "atan2", 0x1B6, St, GOP_Float, 3 }, + { (uchar *) "jfeq", 0x1C0, Br, GOP_Float, 4 }, + { (uchar *) "jfne", 0x1C1, Br, GOP_Float, 4 }, + { (uchar *) "jflt", 0x1C2, Br, GOP_Float, 3 }, + { (uchar *) "jfle", 0x1C3, Br, GOP_Float, 3 }, + { (uchar *) "jfgt", 0x1C4, Br, GOP_Float, 3 }, + { (uchar *) "jfge", 0x1C5, Br, GOP_Float, 3 }, + { (uchar *) "jisnan", 0x1C8, Br, GOP_Float, 2 }, + { (uchar *) "jisinf", 0x1C9, Br, GOP_Float, 2 }, +}; + +/* The opmacros table is used for fake opcodes. The opcode numbers are + ignored; this table is only used for argument parsing. */ +static opcodeg opmacros_table_g[] = { + { (uchar *) "pull", 0, St, 0, 1 }, + { (uchar *) "push", 0, 0, 0, 1 }, +}; + +static opcodeg custom_opcode_g; + +static opcodez internal_number_to_opcode_z(int32 i) +{ opcodez x; + ASSERT_ZCODE(); + if (i == -1) return custom_opcode_z; + x = opcodes_table_z[i]; + if (instruction_set_number < x.version1) return invalid_opcode_z; + if (x.version2 == 0) return x; + if (instruction_set_number <= x.version2) return x; + i = x.extension; + if (i < 0) return invalid_opcode_z; + x = extension_table_z[i]; + if (instruction_set_number < x.version1) return invalid_opcode_z; + if (x.version2 == 0) return x; + if (instruction_set_number <= x.version2) return x; + return extension_table_z[x.extension]; +} + +static void make_opcode_syntax_z(opcodez opco) +{ char *p = "", *q = opcode_syntax_string; + sprintf(q, "%s", opco.name); + switch(opco.no) + { case ONE: p=" "; break; + case TWO: p=" "; break; + case EXT: + case VAR: p=" <0 to 4 operands>"; break; + case VAR_LONG: p=" <0 to 8 operands>"; break; + } + switch(opco.op_rules) + { case TEXT: sprintf(q+strlen(q), " "); return; + case LABEL: sprintf(q+strlen(q), "