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A32: Add Step

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This commit is contained in:
MerryMage 2020-04-06 15:35:43 +01:00
parent f69c77391e
commit b6536115ef
6 changed files with 88 additions and 32 deletions
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56
src/backend/x64/a32_interface.cpp
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@ -41,7 +41,7 @@ static RunCodeCallbacks GenRunCodeCallbacks(A32::UserCallbacks* cb, CodePtr (*Lo
struct Jit::Impl {
Impl(Jit* jit, A32::UserConfig config)
: block_of_code(GenRunCodeCallbacks(config.callbacks, &GetCurrentBlock, this), JitStateInfo{jit_state})
: block_of_code(GenRunCodeCallbacks(config.callbacks, &GetCurrentBlockThunk, this), JitStateInfo{jit_state})
, emitter(block_of_code, config, jit)
, config(std::move(config))
, jit_interface(jit)
@ -59,13 +59,22 @@ struct Jit::Impl {
bool invalidate_entire_cache = false;
void Execute() {
const u32 new_rsb_ptr = (jit_state.rsb_ptr - 1) & A32JitState::RSBPtrMask;
if (jit_state.GetUniqueHash() == jit_state.rsb_location_descriptors[new_rsb_ptr]) {
jit_state.rsb_ptr = new_rsb_ptr;
block_of_code.RunCodeFrom(&jit_state, reinterpret_cast<CodePtr>(jit_state.rsb_codeptrs[new_rsb_ptr]));
} else {
block_of_code.RunCode(&jit_state);
}
const CodePtr current_codeptr = [this]{
// RSB optimization
const u32 new_rsb_ptr = (jit_state.rsb_ptr - 1) & A32JitState::RSBPtrMask;
if (jit_state.GetUniqueHash() == jit_state.rsb_location_descriptors[new_rsb_ptr]) {
jit_state.rsb_ptr = new_rsb_ptr;
return reinterpret_cast<CodePtr>(jit_state.rsb_codeptrs[new_rsb_ptr]);
}
return GetCurrentBlock();
}();
block_of_code.RunCodeFrom(&jit_state, current_codeptr);
}
void Step() {
block_of_code.StepCode(&jit_state, GetCurrentSingleStep());
}
std::string Disassemble(const IR::LocationDescriptor& descriptor) {
@ -109,16 +118,21 @@ struct Jit::Impl {
private:
Jit* jit_interface;
static CodePtr GetCurrentBlock(void* this_voidptr) {
static CodePtr GetCurrentBlockThunk(void* this_voidptr) {
Jit::Impl& this_ = *static_cast<Jit::Impl*>(this_voidptr);
A32JitState& jit_state = this_.jit_state;
return this_.GetCurrentBlock();
}
u32 pc = jit_state.Reg[15];
A32::PSR cpsr{jit_state.Cpsr()};
A32::FPSCR fpscr{jit_state.upper_location_descriptor};
A32::LocationDescriptor descriptor{pc, cpsr, fpscr};
IR::LocationDescriptor GetCurrentLocation() const {
return IR::LocationDescriptor{jit_state.GetUniqueHash()};
}
return this_.GetBasicBlock(descriptor).entrypoint;
CodePtr GetCurrentBlock() {
return GetBasicBlock(GetCurrentLocation()).entrypoint;
}
CodePtr GetCurrentSingleStep() {
return GetBasicBlock(A32::LocationDescriptor{GetCurrentLocation()}.SetSingleStepping(true)).entrypoint;
}
A32EmitX64::BlockDescriptor GetBasicBlock(IR::LocationDescriptor descriptor) {
@ -159,6 +173,18 @@ void Jit::Run() {
impl->PerformCacheInvalidation();
}
void Jit::Step() {
ASSERT(!is_executing);
is_executing = true;
SCOPE_EXIT { this->is_executing = false; };
impl->jit_state.halt_requested = true;
impl->Step();
impl->PerformCacheInvalidation();
}
void Jit::ClearCache() {
impl->invalidate_entire_cache = true;
impl->RequestCacheInvalidation();