158 lines
3.7 KiB
C
158 lines
3.7 KiB
C
/* asmconv 1.11 - convert 80X86 assembly Author: Kees J. Bot
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* 24 Dec 1993
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*/
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static char version[] = "1.11";
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#define nil 0
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <assert.h>
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#include "asmconv.h"
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#include "asm86.h"
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#include "languages.h"
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void fatal(char *label)
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{
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fprintf(stderr, "asmconv: %s: %s\n", label, strerror(errno));
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exit(EXIT_FAILURE);
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}
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void *allocate(void *mem, size_t size)
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/* A checked malloc/realloc(). Yes, I know ISO C allows realloc(NULL, size). */
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{
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mem= mem == nil ? malloc(size) : realloc(mem, size);
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if (mem == nil) fatal("malloc()");
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return mem;
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}
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void deallocate(void *mem)
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/* Free a malloc()d cell. (Yes I know ISO C allows free(NULL) */
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{
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if (mem != nil) free(mem);
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}
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char *copystr(const char *s)
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{
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char *c;
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c= allocate(nil, (strlen(s) + 1) * sizeof(s[0]));
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strcpy(c, s);
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return c;
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}
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int isanumber(const char *s)
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/* True if s can be turned into a number. */
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{
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char *end;
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(void) strtol(s, &end, 0);
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return end != s && *end == 0;
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}
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/* "Invisible" globals. */
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int asm_mode32= (sizeof(int) == 4);
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int err_code= EXIT_SUCCESS;
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int main(int argc, char **argv)
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{
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void (*parse_init)(char *file);
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asm86_t *(*get_instruction)(void);
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void (*emit_init)(char *file, const char *banner);
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void (*emit_instruction)(asm86_t *instr);
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char *lang_parse, *lang_emit, *input_file, *output_file;
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asm86_t *instr;
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char banner[80];
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if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'm') {
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if (strcmp(argv[1], "-mi86") == 0) {
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set_use16();
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} else
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if (strcmp(argv[1], "-mi386") == 0) {
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set_use32();
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} else {
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fprintf(stderr, "asmconv: '%s': unknown machine\n",
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argv[1]+2);
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}
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argc--;
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argv++;
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}
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if (argc < 3 || argc > 5) {
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fprintf(stderr,
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"Usage: asmconv <input-type> <output-type> [input-file [output-file]]\n");
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exit(EXIT_FAILURE);
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}
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lang_parse= argv[1];
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lang_emit= argv[2];
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input_file= argc < 4 ? nil : argv[3];
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output_file= argc < 5 ? nil : argv[4];
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/* Choose the parsing routines. */
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if (strcmp(lang_parse, "ack") == 0) {
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/* Standard ACK. */
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parse_init= ack_parse_init;
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get_instruction= ack_get_instruction;
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} else
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if (strcmp(lang_parse, "ncc") == 0) {
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/* ACK Xenix assembly, a black sheep among ACK assemblies. */
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parse_init= ncc_parse_init;
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get_instruction= ncc_get_instruction;
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} else
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if (strcmp(lang_parse, "gnu") == 0) {
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/* GNU assembly. Parser by R.S. Veldema. */
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parse_init= gnu_parse_init;
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get_instruction= gnu_get_instruction;
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} else
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if (strcmp(lang_parse, "bas") == 0) {
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/* Bruce Evans' assembler. */
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parse_init= bas_parse_init;
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get_instruction= bas_get_instruction;
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} else {
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fprintf(stderr, "asmconv: '%s': unknown input language\n",
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lang_parse);
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exit(EXIT_FAILURE);
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}
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/* Choose the output language. */
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if (strcmp(lang_emit, "ack") == 0) {
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/* Standard ACK. */
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emit_init= ack_emit_init;
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emit_instruction= ack_emit_instruction;
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} else
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if (strcmp(lang_emit, "ncc") == 0) {
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/* ACK Xenix assembly, can be read by BAS and the 8086 ACK
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* ANSI C compiler. (Allows us to compile the Boot Monitor.)
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*/
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emit_init= ncc_emit_init;
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emit_instruction= ncc_emit_instruction;
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} else
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if (strcmp(lang_emit, "gnu") == 0) {
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/* GNU assembler. So we can assemble the ACK stuff among the
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* kernel sources and in the library.
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*/
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emit_init= gnu_emit_init;
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emit_instruction= gnu_emit_instruction;
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} else {
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fprintf(stderr, "asmconv: '%s': unknown output language\n",
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lang_emit);
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exit(EXIT_FAILURE);
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}
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sprintf(banner, "Translated from %s to %s by asmconv %s",
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lang_parse, lang_emit, version);
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(*parse_init)(input_file);
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(*emit_init)(output_file, banner);
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for (;;) {
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instr= (*get_instruction)();
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(*emit_instruction)(instr);
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if (instr == nil) break;
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del_asm86(instr);
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}
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exit(err_code);
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}
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