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GBA: Fix some ROM buffer handling issues with oddly sized files

This commit is contained in:
Vicki Pfau 2022-07-01 23:37:50 -07:00
parent dd29e0cad3
commit 7f91cfe58d
1 changed files with 3 additions and 2 deletions
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5
src/gba/gba.c
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@ -399,14 +399,15 @@ bool GBALoadROM(struct GBA* gba, struct VFile* vf) {
}
GBAUnloadROM(gba);
gba->romVf = vf;
gba->isPristine = true;
gba->pristineRomSize = vf->size(vf);
vf->seek(vf, 0, SEEK_SET);
if (gba->pristineRomSize > SIZE_CART0) {
gba->isPristine = false;
char ident;
vf->seek(vf, 0xAC, SEEK_SET);
vf->read(vf, &ident, 1);
if (ident == 'M') {
gba->isPristine = false;
gba->memory.romSize = 0x01000000;
#ifdef FIXED_ROM_BUFFER
gba->memory.rom = romBuffer;
@ -417,8 +418,8 @@ bool GBALoadROM(struct GBA* gba, struct VFile* vf) {
gba->memory.rom = vf->map(vf, SIZE_CART0, MAP_READ);
gba->memory.romSize = SIZE_CART0;
}
gba->pristineRomSize = SIZE_CART0;
} else {
gba->isPristine = true;
gba->memory.rom = vf->map(vf, gba->pristineRomSize, MAP_READ);
gba->memory.romSize = gba->pristineRomSize;
}