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/*
* Copyright © 2014 IIMarckus <imarckus@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Dump a table of files to individual binary files.
*/
#include <err.h>
#include <errno.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
/* 0x1708000 in Stadium GS */
uint32_t
getint32BE(FILE *f)
{
uint32_t n;
n = fgetc(f) << 24;
n |= fgetc(f) << 16;
n |= fgetc(f) << 8;
n |= fgetc(f);
return n;
}
int
main(int argc, char *argv[])
{
FILE *rom;
FILE *outfile;
uint32_t ntables, nentries;
uint32_t *tableptrs, *sizes;
int i, x, table, entry;
char outfilename[16];
char *ep;
unsigned long long dataoff;
if (argc != 3) {
errx(1, "Usage: extractbin file offset");
}
rom = fopen(argv[1], "rb");
if (rom == NULL) {
err(1, "Error opening file '%s'", argv[1]);
}
dataoff = strtoull(argv[2], &ep, 0);
if (argv[2][0] == '\0' || *ep != '\0') {
err(1, "invalid offset '%s'", argv[2]);
}
if (errno == ERANGE && dataoff == ULLONG_MAX) {
err(1, "invalid offset '%s'", argv[2]);
}
if (dataoff > 64 * 1024 * 1024) {
err(1, "invalid offset '%s'", argv[2]);
}
fseek(rom, dataoff + 0xc, SEEK_SET);
ntables = getint32BE(rom);
tableptrs = reallocarray(NULL, ntables, sizeof(uint32_t));
sizes = reallocarray(NULL, ntables, sizeof(uint32_t));
if (tableptrs == NULL || sizes == NULL) {
err(1, "Could not allocate memory for table table");
}
for (i = 0; i < ntables; ++i) {
tableptrs[i] = getint32BE(rom);
sizes[i] = getint32BE(rom);
getint32BE(rom);
getint32BE(rom);
}
printf("%d tables\n", ntables);
for (table = 0; table < ntables; ++table) {
for (i = 0; i < 16; ++i) {
fseek(rom, dataoff + tableptrs[table] + sizes[table] - i - 1, SEEK_SET);
if (fgetc(rom) != 0xff) {
sizes[table] -= i;
break;
}
}
fseek(rom, dataoff + tableptrs[table], SEEK_SET);
snprintf(outfilename, sizeof outfilename, "0x%x.bin", ftell(rom));
outfile = fopen(outfilename, "wb");
for (i = 0; i < sizes[table]; ++i) {
fputc(fgetc(rom), outfile);
}
fclose(outfile);
}
}
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