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AGBSAVE: allow injecting smaller saves

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d0k3 2017-09-21 23:10:32 +02:00
parent c80ebb1100
commit b3243a2792
1 changed files with 9 additions and 4 deletions
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13
source/utils/nandutil.c
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@ -155,13 +155,18 @@ u32 InjectGbaVcSavegame(const char* path, const char* path_vcsave) {
if ((fvx_stat(path_vcsave, &fno) != FR_OK) || !GBASAVE_VALID(fno.fsize)) if ((fvx_stat(path_vcsave, &fno) != FR_OK) || !GBASAVE_VALID(fno.fsize))
return 1; // bad size return 1; // bad size
// read AGBsave header, savegame to memory // read AGBsave header to memory
if ((fvx_qread(path, agbsave, 0, sizeof(AgbSaveHeader), NULL) != FR_OK) || (ValidateAgbSaveHeader(agbsave) != 0) || if ((fvx_qread(path, agbsave, 0, sizeof(AgbSaveHeader), NULL) != FR_OK) ||
(fvx_qread(path_vcsave, savegame, 0, agbsave->save_size, NULL) != FR_OK)) return 1; // not a proper savegame for header (ValidateAgbSaveHeader(agbsave) != 0)) return 1; // not a proper header
// read savegame to memory
u32 inject_save_size = min(agbsave->save_size, fno.fsize);
memset(savegame, 0xFF, agbsave->save_size); // pad with 0xFF
if (fvx_qread(path_vcsave, savegame, 0, inject_save_size, NULL) != FR_OK) return 1;
// byteswap for eeprom type saves (512 byte / 8 kB) // byteswap for eeprom type saves (512 byte / 8 kB)
if ((agbsave->save_size == GBASAVE_EEPROM_512) || (agbsave->save_size == GBASAVE_EEPROM_8K)) { if ((agbsave->save_size == GBASAVE_EEPROM_512) || (agbsave->save_size == GBASAVE_EEPROM_8K)) {
for (u8* ptr = savegame; (ptr - savegame) < (int) agbsave->save_size; ptr += 8) for (u8* ptr = savegame; (ptr - savegame) < (int) inject_save_size; ptr += 8)
*(u64*) (void*) ptr = getbe64(ptr); *(u64*) (void*) ptr = getbe64(ptr);
} }