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backend/arm64: Implement Step

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Merry 2022-08-16 12:12:46 +01:00 committed by merry
parent cf47ab3b42
commit d90e0db502
4 changed files with 33 additions and 6 deletions
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21
src/dynarmic/backend/arm64/a32_address_space.cpp
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@ -166,6 +166,27 @@ void A32AddressSpace::EmitPrelude() {
code.BR(X0);
prelude_info.step_code = code.ptr<PreludeInfo::RunCodeFuncType>();
ABI_PushRegisters(code, ABI_CALLEE_SAVE | (1 << 30), sizeof(StackLayout));
code.MOV(Xstate, X1);
code.MOV(Xhalt, X2);
code.LDR(Wscratch0, Xstate, offsetof(A32JitState, upper_location_descriptor));
code.AND(Wscratch0, Wscratch0, 0xffff0000);
code.MRS(Xscratch1, oaknut::SystemReg::FPCR);
code.STR(Wscratch1, SP, offsetof(StackLayout, save_host_fpcr));
code.MSR(oaknut::SystemReg::FPCR, Xscratch0);
oaknut::Label step_hr_loop;
code.l(step_hr_loop);
code.LDAXR(Wscratch0, Xhalt);
code.ORR(Wscratch0, Wscratch0, static_cast<u32>(HaltReason::Step));
code.STLXR(Wscratch1, Wscratch0, Xhalt);
code.CBNZ(Wscratch1, step_hr_loop);
code.BR(X0);
prelude_info.return_from_run_code = code.ptr<void*>();
code.LDR(Wscratch0, SP, offsetof(StackLayout, save_host_fpcr));

6
src/dynarmic/backend/arm64/a32_core.h
View file

@ -19,6 +19,12 @@ public:
const auto entry_point = process.GetOrEmit(location_descriptor);
return process.prelude_info.run_code(entry_point, &thread_ctx, halt_reason);
}
HaltReason Step(A32AddressSpace& process, A32JitState& thread_ctx, volatile u32* halt_reason) {
const auto location_descriptor = A32::LocationDescriptor{thread_ctx.GetLocationDescriptor()}.SetSingleStepping(true);
const auto entry_point = process.GetOrEmit(location_descriptor);
return process.prelude_info.step_code(entry_point, &thread_ctx, halt_reason);
}
};
} // namespace Dynarmic::Backend::Arm64

4
src/dynarmic/backend/arm64/a32_interface.cpp
View file

@ -79,11 +79,11 @@ struct Jit::Impl final {
jit_interface->is_executing = false;
};
ASSERT_FALSE("Unimplemented");
HaltReason hr = core.Step(current_address_space, current_state, &halt_reason);
PerformRequestedCacheInvalidation();
return HaltReason{};
return hr;
}
void ClearCache() {

8
src/dynarmic/backend/arm64/emit_arm64_a32.cpp
View file

@ -61,8 +61,8 @@ void EmitSetUpperLocationDescriptor(oaknut::CodeGenerator& code, EmitContext& ct
void EmitA32Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::LinkBlock terminal, IR::LocationDescriptor initial_location, bool) {
EmitSetUpperLocationDescriptor(code, ctx, terminal.next, initial_location);
code.MOV(Xscratch0, terminal.next.Value());
code.STUR(Xscratch0, Xstate, offsetof(A32JitState, regs) + sizeof(u32) * 15);
code.MOV(Wscratch0, A32::LocationDescriptor{terminal.next}.PC());
code.STR(Wscratch0, Xstate, offsetof(A32JitState, regs) + sizeof(u32) * 15);
EmitRelocation(code, ctx, LinkTarget::ReturnFromRunCode);
// TODO: Implement LinkBlock optimization
@ -71,8 +71,8 @@ void EmitA32Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::Li
void EmitA32Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::LinkBlockFast terminal, IR::LocationDescriptor initial_location, bool) {
EmitSetUpperLocationDescriptor(code, ctx, terminal.next, initial_location);
code.MOV(Xscratch0, terminal.next.Value());
code.STUR(Xscratch0, Xstate, offsetof(A32JitState, regs) + sizeof(u32) * 15);
code.MOV(Wscratch0, A32::LocationDescriptor{terminal.next}.PC());
code.STR(Wscratch0, Xstate, offsetof(A32JitState, regs) + sizeof(u32) * 15);
EmitRelocation(code, ctx, LinkTarget::ReturnFromRunCode);
// TODO: Implement LinkBlockFast optimization