176 lines
3.5 KiB
C
176 lines
3.5 KiB
C
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#include <stdlib.h>
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#include <stdio.h>
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#include <time.h>
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#include <string.h>
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#ifndef __stupidos__
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# include <libgen.h>
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#endif
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#include <coff.h>
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static const struct {
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int magic;
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char *machine;
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} MACHINES[] = {
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{F_MACH_AM33, "Matsushita AM33"},
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{F_MACH_AMD64, "Intel amd64"},
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{F_MACH_ARM, "ARM"},
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{F_MACH_ARMNT, "ARM Thumb-2"},
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{F_MACH_EBC, "EFI byte code"},
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{F_MACH_I386, "Intel 80386"},
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{F_MACH_IA64, "IA64"},
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{F_MACH_M32R, "Mitsubishi M32R"},
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/* TODO */
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{F_MACH_UNKNOWN, "unknown"}
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};
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/* */
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static const char *prg_name;
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static const char *mach = NULL;
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/* */
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static int display_header = 0;
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static int display_program_header = 0;
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static int display_sections = 0;
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static void
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usage(int retval)
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{
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if (retval == EXIT_FAILURE)
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{
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fprintf(stderr, "Try '%s -h' for more informations.", prg_name);
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}
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else
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{
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printf("Usage: %s [OPTIONS...] [FILES]\n", prg_name);
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printf("Options are:\n");
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printf("\t-a\tEquivalent to: -H -l -S -s -r -d -v -A -I\n");
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printf("\t-H\tDisplay the COFF file header\n");
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}
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exit(retval);
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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 (%s) %s", prg_name, MK_PACKAGE, 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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FILHDR file_header;
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AOUTHDR aout_header;
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SCNHDR section_header;
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char name[9];
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char *type;
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FILE *fp;
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int idx;
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time_t timedat;
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#ifndef __stupidos__
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prg_name = basename(argv[0]);
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#else
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prg_name = argv[0];
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#endif
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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 'a':
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display_header = 1;
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display_program_header = 1;
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display_sections = 1;
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break;
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case 'H':
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display_header = 1;
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break;
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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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}
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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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if (display_header)
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{
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if (fread(&file_header, 1, FILHSZ, fp) != FILHSZ)
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{
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return (EXIT_FAILURE);
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}
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for (idx = 0; MACHINES[idx].magic != F_MACH_UNKNOWN; idx++)
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{
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if (MACHINES[idx].magic == file_header.f_magic)
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{
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mach = MACHINES[idx].machine;
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break;
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}
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}
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if (mach == NULL) return (EXIT_FAILURE);
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printf("COFF Header:\n");
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printf(" Machine: %s\n", mach);
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printf(" Number of section headers: %hd\n", file_header.f_nscns);
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timedat = file_header.f_timdat;
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printf(" Created at: %s", ctime(&timedat));
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printf(" Start of Symbol Table: %d (bytes into file)\n", file_header.f_symptr);
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printf(" Number of Symbols: %d\n", file_header.f_nsyms);
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printf(" Size of optional header: %hu\n", file_header.f_opthdr);
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printf(" Flags: 0x%hx\n\n", file_header.f_flags);
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}
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if (display_sections)
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{
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fseek(fp, file_header.f_opthdr + FILHSZ, SEEK_SET);
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printf("Section Headers:\n");
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printf("[Nr] Name Type Address Offset\n");
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printf(" Size\n");
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for (idx = 0; idx < file_header.f_nscns; idx++)
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{
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if (fread(§ion_header, 1, SCNHSZ, fp) != SCNHSZ)
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{
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return (EXIT_FAILURE);
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}
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memset(name, 0, 9);
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memcpy(name, section_header.s_name, 8);
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if (section_header.s_flags & STYP_TEXT)
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{
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type = "TEXT";
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} else if (section_header.s_flags & STYP_DATA)
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{
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type = "DATA";
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}
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else if (section_header.s_flags & STYP_BSS)
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{
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type = "BSS";
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}
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else
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{
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type = "???";
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}
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printf("[%2d] %-8s %-8s %08X %08X\n", idx, name, type, section_header.s_vaddr, section_header.s_scnptr);
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printf(" %08X\n", section_header.s_size);
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}
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}
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return (EXIT_SUCCESS);
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}
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