96 lines
1.8 KiB
C
96 lines
1.8 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include <coff.h>
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static char *prg_name;
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static char *outfile = "a.out";
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static void
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usage(int retcode)
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{
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if (retcode == EXIT_FAILURE)
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{
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fprintf(stderr, "Try '%s -h' form more information.\n", prg_name);
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}
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else
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{
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printf("Usage: %s [-hV] [-o outfile] [OBJS...]\n", prg_name);
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printf("\t-h\tdisplay this help and exit\n");
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printf("\t-V\toutput version information\n");
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printf("\t-o outfile\tout file (default: %s)\n", outfile);
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printf("\nReport bugs to <%s>\n", MK_BUGREPORT);
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}
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exit(retcode);
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}
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static void
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version(void)
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{
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printf("%s commit %s\n", prg_name, MK_COMMIT);
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exit(EXIT_SUCCESS);
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}
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int
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main(int argc, char **argv)
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{
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FILE *fp;
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FILHDR fhdr;
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SCNHDR shdr;
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AOUTHDR aout;
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prg_name = argv[0];
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while ((argc > 1) && (argv[1][0] == '-'))
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{
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switch (argv[1][1])
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{
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case 'h':
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usage(EXIT_SUCCESS);
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break;
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case 'V':
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version();
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break;
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case 'o':
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argv++;
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argc--;
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if (argc <= 1) usage(EXIT_FAILURE);
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outfile = argv[1];
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break;
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}
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argv++;
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argc--;
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}
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if (argc <= 1) usage(EXIT_FAILURE);
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fp = fopen(argv[1], "rb");
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if (fp == NULL)
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{
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return (EXIT_FAILURE);
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}
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fread(&fhdr, 1, FILHSZ, fp);
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printf("magic: 0x%hx\n", fhdr.f_magic);
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printf("n section: %hd\n", fhdr.f_nscns);
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printf("symtab: 0x%X\n", fhdr.f_symptr);
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printf("sym entries: %d\n", fhdr.f_nsyms);
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printf("optional hdr size: %hu\n", fhdr.f_opthdr);
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printf("flags: 0x%hx\n", fhdr.f_flags);
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if (fhdr.f_opthdr > 0)
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{
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fread(&aout, 1, AOUTHSZ, fp);
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}
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fread(&shdr, 1, SCNHSZ, fp);
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printf("name: %c%c%c%c%c%c%c%c\n", shdr.s_name[0], shdr.s_name[1],shdr.s_name[2],shdr.s_name[3],shdr.s_name[4],shdr.s_name[5],shdr.s_name[6],shdr.s_name[7]);
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printf("flags: 0x%x\n", shdr.s_flags);
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fclose(fp);
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return (EXIT_SUCCESS);
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}
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