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GBA Memory: Add support for palette RAM, VRAM, and OAM to GBAPatch8

This commit is contained in:
Vicki Pfau 2024-09-15 03:18:16 -07:00
parent a6914b2ddb
commit bb8a6e05f9
1 changed files with 31 additions and 3 deletions
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34
src/gba/memory.c
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@ -1350,10 +1350,22 @@ void GBAPatch16(struct ARMCore* cpu, uint32_t address, int16_t value, int16_t* o
}
}
#define MUNGE8 \
if (address & 1) { \
oldValue = alignedValue >> 8; \
alignedValue &= 0xFF; \
alignedValue |= value << 8; \
} else { \
oldValue = alignedValue; \
alignedValue &= 0xFF00; \
alignedValue |= (uint8_t) value; \
}
void GBAPatch8(struct ARMCore* cpu, uint32_t address, int8_t value, int8_t* old) {
struct GBA* gba = (struct GBA*) cpu->master;
struct GBAMemory* memory = &gba->memory;
int8_t oldValue = -1;
int16_t alignedValue;
switch (address >> BASE_OFFSET) {
case GBA_REGION_EWRAM:
@ -1368,13 +1380,29 @@ void GBAPatch8(struct ARMCore* cpu, uint32_t address, int8_t value, int8_t* old)
mLOG(GBA_MEM, STUB, "Unimplemented memory Patch8: 0x%08X", address);
break;
case GBA_REGION_PALETTE_RAM:
mLOG(GBA_MEM, STUB, "Unimplemented memory Patch8: 0x%08X", address);
LOAD_16(alignedValue, address & (GBA_SIZE_PALETTE_RAM - 2), gba->video.palette);
MUNGE8;
STORE_16(alignedValue, address & (GBA_SIZE_PALETTE_RAM - 2), gba->video.palette);
gba->video.renderer->writePalette(gba->video.renderer, address & (GBA_SIZE_PALETTE_RAM - 2), alignedValue);
break;
case GBA_REGION_VRAM:
mLOG(GBA_MEM, STUB, "Unimplemented memory Patch8: 0x%08X", address);
if ((address & 0x0001FFFF) < GBA_SIZE_VRAM) {
LOAD_16(alignedValue, address & 0x0001FFFE, gba->video.vram);
MUNGE8;
STORE_16(alignedValue, address & 0x0001FFFE, gba->video.vram);
gba->video.renderer->writeVRAM(gba->video.renderer, address & 0x0001FFFE);
} else {
LOAD_16(alignedValue, address & 0x00017FFE, gba->video.vram);
MUNGE8;
STORE_16(alignedValue, address & 0x00017FFE, gba->video.vram);
gba->video.renderer->writeVRAM(gba->video.renderer, address & 0x00017FFE);
}
break;
case GBA_REGION_OAM:
mLOG(GBA_MEM, STUB, "Unimplemented memory Patch8: 0x%08X", address);
LOAD_16(alignedValue, address & (GBA_SIZE_OAM - 2), gba->video.oam.raw);
MUNGE8;
STORE_16(alignedValue, address & (GBA_SIZE_OAM - 2), gba->video.oam.raw);
gba->video.renderer->writeOAM(gba->video.renderer, (address & (GBA_SIZE_OAM - 2)) >> 1);
break;
case GBA_REGION_ROM0:
case GBA_REGION_ROM0_EX: