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CPU/Recompiler: Fix mid-block software interrupts not updating pc

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Fixes Need for Speed: High Stakes hanging at boot.
This commit is contained in:
Connor McLaughlin 2020-08-09 04:32:52 +10:00
parent 223074b78f
commit 5b9db71b87
3 changed files with 9 additions and 8 deletions
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4
src/core/cpu_code_cache.cpp
View file

@ -141,8 +141,8 @@ void Execute()
reexecute_block:
#if 0
const u32 tick = g_system->GetGlobalTickCounter() + m_core->GetPendingTicks();
if (tick == 61033207)
const u32 tick = TimingEvents::GetGlobalTickCounter() + CPU::GetPendingTicks();
if (tick == 4188233674)
__debugbreak();
#endif

10
src/core/cpu_recompiler_code_generator.cpp
View file

@ -987,11 +987,12 @@ void CodeGenerator::UpdateCurrentInstructionPC(bool commit)
}
}
void CodeGenerator::WriteNewPC(const Value& value)
void CodeGenerator::WriteNewPC(const Value& value, bool commit)
{
// TODO: This _could_ be moved into the register cache, but would it gain anything?
EmitStoreGuestRegister(Reg::pc, value);
m_next_pc_offset = 0;
if (commit)
m_next_pc_offset = 0;
}
bool CodeGenerator::Compile_Fallback(const CodeBlockInstruction& cbi)
@ -1671,12 +1672,12 @@ bool CodeGenerator::Compile_Branch(const CodeBlockInstruction& cbi)
// converge point
EmitBindLabel(&branch_not_taken);
WriteNewPC(next_pc);
WriteNewPC(next_pc, true);
}
else
{
// next_pc is not used for unconditional branches
WriteNewPC(branch_target);
WriteNewPC(branch_target, true);
}
// now invalidate lr becuase it was possibly written in the branch
@ -1917,6 +1918,7 @@ bool CodeGenerator::Compile_cop0(const CodeBlockInstruction& cbi)
// we want to flush pc here
m_register_cache.PushState();
m_register_cache.FlushAllGuestRegisters(false, true);
WriteNewPC(CalculatePC(), false);
EmitExceptionExit();
m_register_cache.PopState();

3
src/core/cpu_recompiler_code_generator.h
View file

@ -171,10 +171,9 @@ private:
void AddPendingCycles(bool commit);
Value CalculatePC(u32 offset = 0);
void CalculatePC(Value* dest_value, u32 offset = 0);
Value GetCurrentInstructionPC(u32 offset = 0);
void UpdateCurrentInstructionPC(bool commit);
void WriteNewPC(const Value& value);
void WriteNewPC(const Value& value, bool commit);
Value DoGTERegisterRead(u32 index);
void DoGTERegisterWrite(u32 index, const Value& value);