+++ /dev/null
-/*******************************************************
- *
- * a56 - a DSP56001 assembler
- *
- * Written by Quinn C. Jensen
- * July 1990
- *
- *******************************************************\
-
-/*
- * Copyright (C) 2008 Robert Millan <rmh@aybabtu.com>
- * Copyright (C) 2012 Thorsten Alteholz <debian@alteholz.de>
- *
- * This file 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
- * <http://www.gnu.org/licenses/>.
- *
- * This file incorporates work covered by the following copyright and
- * permission notice:
- *
- * Copyright (C) 1990-1994 Quinn C. Jensen
- *
- * Permission to use, copy, modify, distribute, and sell this software
- * and its documentation for any purpose is hereby granted without fee,
- * provided that the above copyright notice appear in all copies and
- * that both that copyright notice and this permission notice appear
- * in supporting documentation. The author makes no representations
- * about the suitability of this software for any purpose. It is
- * provided "as is" without express or implied warranty.
- *
- */
-static char *Copyright = "Copyright (C) 1990-1994 Quinn C. Jensen";
-
-/*
- * subs.c - Some subroutines for the assembler.
- *
- */
-
-#include "a56.h"
-
-#define MAX 1024
-
-FILE *open_read(file)
-char *file;
-{
- FILE *fp;
-
- if(strcmp(file, "-") == 0)
- fp = stdin;
- else if ((fp = fopen(file, "r")) == NULL) {
- perror(file);
- exit(1);
- }
- return fp;
-}
-
-FILE *open_write(file)
-char *file;
-{
- FILE *fp;
- if ((fp = fopen(file, "w")) == NULL) {
- perror(file);
- exit(1);
- }
- return fp;
-}
-
-FILE *open_append(file)
-char *file;
-{
- FILE *fp;
- if ((fp = fopen(file, "a")) == NULL) {
- perror(file);
- exit(1);
- }
- return fp;
-}
-
-fatal(c, a1, a2, a3, a4, a5, a6, a7, a8)
-char *c, *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8;
-{
- fprintf(stderr, c, a1, a2, a3, a4, a5, a6, a7, a8);
- exit(1);
-}
-
-#define TABS 8
-#define MAX_BUF 256
-
-char tabbuf[MAX_BUF], *untabn();
-char *untab(s) /* expand tabs in s */
-register char *s;
-{
- return untabn(s, TABS);
-}
-
-char *untabn(s, stops) /* expand tabs in s */
-register char *s;
-register int stops;
-{
- char *o = s;
-
- /* copy input string into buffer to scan while input string is modified */
-
- register char *b = tabbuf;
-
- strncpy(b, s, MAX_BUF);
-
- /* iterate until the copy of the input string is depleted */
-
- while(*b) {
- if(*b == '\t') {
- do
- *s = ' ';
- while ((++s - o) % stops);
- } else {
- *s = *b; s++;
- }
- b++;
- }
-
- /* null terminate the resultant string */
-
- *s = '\0';
-
- return o;
-}
-
-char *alloc(size)
-int size;
-{
- char *p = (char *)malloc(size);
- if(NOT p)
- fatal("alloc: insufficient virtual memory to allocate %d bytes\n",
- size);
- return p;
-}
-
-#define ascii2n(c) \
- ((c) >= 'a' ? (c) - 'a' + 10 : ((c) >= 'A' ? (c) - 'A' + 10 : (c) - '0'))
-
-#define valid(c) ((c) >= '0' && (c) <= '9' || \
- (c) >= 'A' && (c) <= 'Z' || \
- (c) >= 'a' && (c) <= 'z')
-
-a56_strtol(s, p, base)
-register char *s, **p;
-register int base;
-{
- register long result = 0;
- register int sign = 0;
-
- while(*s == ' ' || *s == '\t')
- s++;
-
- if(*s == '-') {
- s++;
- sign++;
- }
-
- while(valid(*s)) {
- register int dig = ascii2n(*s);
- if(dig >= base)
- break;
- result *= base;
- result += dig;
- s++;
- }
-
- if(p)
- *p = s;
-
- return sign ? -result : result;
-}