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GB: Add support for sleep and shutdown callbacks

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This commit is contained in:
Vicki Pfau 2020-09-09 22:57:34 -07:00
parent a8999958da
commit 30e0be098f
2 changed files with 12 additions and 17 deletions
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1
CHANGES
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@ -74,6 +74,7 @@ Misc:
- Core: Add savedataUpdated callback
- Core: Add shutdown callback
- GB: Allow pausing event loop while CPU is blocked
- GB: Add support for sleep and shutdown callbacks
- GBA: Allow pausing event loop while CPU is blocked
- Debugger: Keep track of global cycle count
- FFmpeg: Add looping option for GIF/APNG

28
src/gb/gb.c
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@ -783,29 +783,23 @@ void GBHalt(struct SM83Core* cpu) {
void GBStop(struct SM83Core* cpu) {
struct GB* gb = (struct GB*) cpu->master;
if (cpu->bus) {
mLOG(GB, GAME_ERROR, "Hit illegal stop at address %04X:%02X", cpu->pc, cpu->bus);
}
if (gb->memory.io[REG_KEY1] & 1) {
if (gb->model >= GB_MODEL_CGB && gb->memory.io[REG_KEY1] & 1) {
gb->doubleSpeed ^= 1;
gb->audio.timingFactor = gb->doubleSpeed + 1;
gb->memory.io[REG_KEY1] = 0;
gb->memory.io[REG_KEY1] |= gb->doubleSpeed << 7;
} else if (cpu->bus) {
#ifdef USE_DEBUGGERS
if (cpu->components && cpu->components[CPU_COMPONENT_DEBUGGER]) {
struct mDebuggerEntryInfo info = {
.address = cpu->pc - 1,
.type.bp.opcode = 0x1000 | cpu->bus,
};
mDebuggerEnter((struct mDebugger*) cpu->components[CPU_COMPONENT_DEBUGGER], DEBUGGER_ENTER_ILLEGAL_OP, &info);
} else {
int sleep = ~(gb->memory.io[REG_JOYP] & 0x30);
size_t c;
for (c = 0; c < mCoreCallbacksListSize(&gb->coreCallbacks); ++c) {
struct mCoreCallbacks* callbacks = mCoreCallbacksListGetPointer(&gb->coreCallbacks, c);
if (sleep && callbacks->sleep) {
callbacks->sleep(callbacks->context);
} else if (callbacks->shutdown) {
callbacks->shutdown(callbacks->context);
}
}
#endif
// Hang forever
gb->memory.ime = 0;
cpu->pc -= 2;
}
// TODO: Actually stop
}
void GBIllegal(struct SM83Core* cpu) {