agsdisas.c

   1 #define _GNU_SOURCE
   2 #include "DataFile.h"
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <unistd.h>
   6 #include "version.h"
   7 #define ADS ":::AGSdisas " VERSION " by rofl0r:::"
   8
   9 static int usage(char *argv0) {
  10         fprintf(stderr, ADS "\nusage:\n%s [-oblf] file.o [file.s]\n"
  11                    "pass input and optionally output filename.\n"
  12                    "options:\n"
  13                    "-v : verbose (show filenames)\n"
  14                    "-o : dump offset comments in disassembly\n"
  15                    "-b : dump hexadecimal bytecode comments in disassembly\n"
  16                    "-f : dump informative original fixups section\n"
  17                    "-l : remove linenumber debug assembly directives [produces smaller files]\n"
  18                    , argv0);
  19         exit(1);
  20 }
  21
  22 static int disas(char *o, char *s, int flags, int verbose) {
  23         //ARF_find_code_start
  24         AF f_b, *f = &f_b;
  25         ASI sc;
  26         int err = 0;
  27         if(AF_open(f, o)) {
  28                 ASI *i = ASI_read_script(f, &sc) ? &sc : 0;
  29                 if(verbose) printf("disassembling %s -> %s", o, s);
  30                 if(!i || !ASI_disassemble(f, i, s, flags)) err = 1;
  31                 if(verbose) {
  32                         if(err) printf(" FAIL\n");
  33                         else printf(" OK\n");
  34                 }
  35                 AF_close(f);
  36         }
  37         return err;
  38 }
  39
  40 int main(int argc, char**argv) {
  41         int flags = 0, c, verbose = 0;
  42         while ((c = getopt(argc, argv, "voblf")) != EOF) switch(c) {
  43                 case 'v': verbose = 1; break;
  44                 case 'o': flags |= DISAS_DEBUG_OFFSETS; break;
  45                 case 'b': flags |= DISAS_DEBUG_BYTECODE; break;
  46                 case 'l': flags |= DISAS_SKIP_LINENO; break;
  47                 case 'f': flags |= DISAS_DEBUG_FIXUPS; break;
  48                 default: return usage(argv[0]);
  49         }
  50         if(!argv[optind]) return usage(argv[0]);
  51         char *o = argv[optind], *s, out[256];
  52         if(!argv[optind+1]) {
  53                 size_t l = strlen(o);
  54                 snprintf(out, 256, "%s", o);
  55                 out[l-1] = 's'; // overflow me!
  56                 s = out;
  57         } else s = argv[optind+1];
  58         if(!strcmp(o, s)) {
  59                 fprintf(stderr, "error: input and output file (%s) identical!\n", o);
  60                 return 1;
  61         }
  62
  63         return disas(o, s, flags, verbose);
  64 }