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DS Memory: Allow ARM7 to use mapped VRAM

This commit is contained in:
Vicki Pfau 2017-02-27 14:01:10 -08:00
parent 0cb9c41a4a
commit 2f0ab002e2
1 changed files with 48 additions and 1 deletions
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47
src/ds/memory.c
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@ -264,8 +264,17 @@ static void DS7SetActiveRegion(struct ARMCore* cpu, uint32_t address) {
cpu->memory.activeMask = DS_SIZE_RAM - 1;
break;
}
goto jump_error;
case DS_REGION_VRAM:
if (address < 0x06040000 && ds->memory.vram7[(address & 0x3FFFF) >> 17]) {
// TODO: redzones
cpu->memory.activeRegion = (uint32_t*) ds->memory.vram7[(address & 0x3FFFF) >> 17];
cpu->memory.activeMask = 0x1FFFF;
break;
}
// Fall through
default:
jump_error:
memory->activeRegion = -1;
cpu->memory.activeRegion = _deadbeef;
cpu->memory.activeMask = 0;
@ -305,6 +314,12 @@ uint32_t DS7Load32(struct ARMCore* cpu, uint32_t address, int* cycleCounter) {
case DS_REGION_IO:
value = DS7IORead32(ds, address & 0x00FFFFFC);
break;
case DS_REGION_VRAM:
if (address < 0x06040000 && memory->vram7[(address & 0x3FFFF) >> 17]) {
LOAD_32(value, address & 0x1FFFC, memory->vram7[(address & 0x3FFFF) >> 17]);
break;
}
// Fall through
default:
mLOG(DS_MEM, STUB, "Unimplemented DS7 Load32: %08X", address);
break;
@ -345,6 +360,12 @@ uint32_t DS7Load16(struct ARMCore* cpu, uint32_t address, int* cycleCounter) {
case DS_REGION_IO:
value = DS7IORead(ds, address & DS_OFFSET_MASK);
break;
case DS_REGION_VRAM:
if (address < 0x06040000 && memory->vram7[(address & 0x3FFFF) >> 17]) {
LOAD_16(value, address & 0x1FFFE, memory->vram7[(address & 0x3FFFF) >> 17]);
break;
}
// Fall through
default:
mLOG(DS_MEM, STUB, "Unimplemented DS7 Load16: %08X", address);
break;
@ -418,6 +439,12 @@ void DS7Store32(struct ARMCore* cpu, uint32_t address, int32_t value, int* cycle
case DS_REGION_IO:
DS7IOWrite32(ds, address & DS_OFFSET_MASK, value);
break;
case DS_REGION_VRAM:
if (address < 0x06040000 && memory->vram7[(address & 0x3FFFF) >> 17]) {
STORE_32(value, address & 0x1FFFC, memory->vram7[(address & 0x3FFFF) >> 17]);
break;
}
// Fall through
default:
mLOG(DS_MEM, STUB, "Unimplemented DS7 Store32: %08X:%08X", address, value);
break;
@ -452,6 +479,12 @@ void DS7Store16(struct ARMCore* cpu, uint32_t address, int16_t value, int* cycle
case DS_REGION_IO:
DS7IOWrite(ds, address & DS_OFFSET_MASK, value);
break;
case DS_REGION_VRAM:
if (address < 0x06040000 && memory->vram7[(address & 0x3FFFF) >> 17]) {
STORE_16(value, address & 0x1FFFE, memory->vram7[(address & 0x3FFFF) >> 17]);
break;
}
// Fall through
default:
mLOG(DS_MEM, STUB, "Unimplemented DS7 Store16: %08X:%04X", address, value);
break;
@ -601,6 +634,13 @@ uint32_t DS7LoadMultiple(struct ARMCore* cpu, uint32_t address, int mask, enum L
case DS_REGION_IO:
LDM_LOOP(value = DS7IORead32(ds, address));
break;
case DS_REGION_VRAM:
LDM_LOOP(if (address < 0x06040000 && memory->vram7[(address & 0x3FFFF) >> 17]) {
LOAD_32(value, address & 0x1FFFF, memory->vram7[(address & 0x3FFFF) >> 17]);
} else {
mLOG(DS_MEM, STUB, "Unimplemented DS7 LDM: %08X", address);
});
break;
default:
mLOG(DS_MEM, STUB, "Unimplemented DS7 LDM: %08X", address);
LDM_LOOP(value = 0);
@ -660,6 +700,13 @@ uint32_t DS7StoreMultiple(struct ARMCore* cpu, uint32_t address, int mask, enum
mLOG(DS_MEM, STUB, "Unimplemented DS9 STM: %08X", address);
});
break;
case DS_REGION_VRAM:
STM_LOOP(if (address < 0x06040000 && memory->vram7[(address & 0x3FFFF) >> 17]) {
STORE_32(value, address & 0x1FFFF, memory->vram7[(address & 0x3FFFF) >> 17]);
} else {
mLOG(DS_MEM, STUB, "Unimplemented DS7 STM: %08X", address);
});
break;
default:
mLOG(DS_MEM, STUB, "Unimplemented DS9 STM: %08X", address);
STM_LOOP();