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GBA: Change how GameShark ROM patches work

This commit is contained in:
Jeffrey Pfau 2015-02-08 21:03:05 -08:00
parent 2b92eab1b2
commit 05e18ac255
2 changed files with 13 additions and 12 deletions
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23
src/gba/cheats.c
View File

@ -227,13 +227,10 @@ static bool _addGSA1(struct GBACheatSet* cheats, uint32_t op1, uint32_t op2) {
cheats->incompleteCheat = cheat; cheats->incompleteCheat = cheat;
break; break;
case GSA_PATCH: case GSA_PATCH:
if (cheats->nRomPatches >= MAX_ROM_PATCHES) { cheats->romPatches[0].address = (op1 & 0xFFFFFF) << 1;
return false; cheats->romPatches[0].newValue = op2;
} cheats->romPatches[0].applied = false;
cheats->romPatches[cheats->nRomPatches].address = (op1 & 0xFFFFFF) << 1; cheats->romPatches[0].exists = true;
cheats->romPatches[cheats->nRomPatches].newValue = op2;
cheats->romPatches[cheats->nRomPatches].applied = false;
++cheats->nRomPatches;
return true; return true;
case GSA_BUTTON: case GSA_BUTTON:
// TODO: Implement button // TODO: Implement button
@ -298,8 +295,8 @@ static void _patchROM(struct GBACheatDevice* device) {
return; return;
} }
int i; int i;
for (i = 0; i < device->cheats->nRomPatches; ++i) { for (i = 0; i < MAX_ROM_PATCHES; ++i) {
if (device->cheats->romPatches[i].applied) { if (!device->cheats->romPatches[i].exists || device->cheats->romPatches[i].applied) {
continue; continue;
} }
GBAPatch16(device->p->cpu, device->cheats->romPatches[i].address, device->cheats->romPatches[i].newValue, &device->cheats->romPatches[i].oldValue); GBAPatch16(device->p->cpu, device->cheats->romPatches[i].address, device->cheats->romPatches[i].newValue, &device->cheats->romPatches[i].oldValue);
@ -312,8 +309,8 @@ static void _unpatchROM(struct GBACheatDevice* device) {
return; return;
} }
int i; int i;
for (i = 0; i < device->cheats->nRomPatches; ++i) { for (i = 0; i < MAX_ROM_PATCHES; ++i) {
if (!device->cheats->romPatches[i].applied) { if (!device->cheats->romPatches[i].exists || !device->cheats->romPatches[i].applied) {
continue; continue;
} }
GBAPatch16(device->p->cpu, device->cheats->romPatches[i].address, device->cheats->romPatches[i].oldValue, 0); GBAPatch16(device->p->cpu, device->cheats->romPatches[i].address, device->cheats->romPatches[i].oldValue, 0);
@ -338,6 +335,10 @@ void GBACheatSetInit(struct GBACheatSet* set) {
set->patchedOpcode = 0; set->patchedOpcode = 0;
set->gsaVersion = 0; set->gsaVersion = 0;
set->remainingAddresses = 0; set->remainingAddresses = 0;
int i;
for (i = 0; i < MAX_ROM_PATCHES; ++i) {
set->romPatches[i].exists = false;
}
} }
void GBACheatSetDeinit(struct GBACheatSet* set) { void GBACheatSetDeinit(struct GBACheatSet* set) {

2
src/gba/cheats.h
View File

@ -82,8 +82,8 @@ struct GBACheatSet {
int16_t newValue; int16_t newValue;
int16_t oldValue; int16_t oldValue;
bool applied; bool applied;
bool exists;
} romPatches[MAX_ROM_PATCHES]; } romPatches[MAX_ROM_PATCHES];
int nRomPatches;
int gsaVersion; int gsaVersion;
uint32_t gsaSeeds[4]; uint32_t gsaSeeds[4];