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CPU/Recompiler: Implement mfhi/mthi/mflo/mtlo

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This commit is contained in:
Connor McLaughlin 2019-11-22 00:51:16 +10:00
parent 51a873e58d
commit e5c0d28fdc
4 changed files with 43 additions and 7 deletions
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4
src/core/cpu_core.cpp
View file

@ -74,10 +74,6 @@ bool Core::DoState(StateWrapper& sw)
sw.Do(&m_pending_ticks);
sw.Do(&m_downcount);
sw.DoArray(m_regs.r, countof(m_regs.r));
sw.Do(&m_regs.pc);
sw.Do(&m_regs.hi);
sw.Do(&m_regs.lo);
sw.Do(&m_regs.npc);
sw.Do(&m_cop0_regs.BPC);
sw.Do(&m_cop0_regs.BDA);
sw.Do(&m_cop0_regs.TAR);

39
src/core/cpu_recompiler_code_generator.cpp
View file

@ -114,6 +114,13 @@ bool CodeGenerator::CompileInstruction(const CodeBlockInstruction& cbi)
result = Compile_ShiftVariable(cbi);
break;
case InstructionFunct::mfhi:
case InstructionFunct::mflo:
case InstructionFunct::mthi:
case InstructionFunct::mtlo:
result = Compile_MoveHiLo(cbi);
break;
default:
result = Compile_Fallback(cbi);
break;
@ -873,6 +880,37 @@ bool CodeGenerator::Compile_Store(const CodeBlockInstruction& cbi)
return true;
}
bool CodeGenerator::Compile_MoveHiLo(const CodeBlockInstruction& cbi)
{
InstructionPrologue(cbi, 1);
switch (cbi.instruction.r.funct)
{
case InstructionFunct::mfhi:
m_register_cache.WriteGuestRegister(cbi.instruction.r.rd, m_register_cache.ReadGuestRegister(Reg::hi));
break;
case InstructionFunct::mthi:
m_register_cache.WriteGuestRegister(Reg::hi, m_register_cache.ReadGuestRegister(cbi.instruction.r.rs));
break;
case InstructionFunct::mflo:
m_register_cache.WriteGuestRegister(cbi.instruction.r.rd, m_register_cache.ReadGuestRegister(Reg::lo));
break;
case InstructionFunct::mtlo:
m_register_cache.WriteGuestRegister(Reg::lo, m_register_cache.ReadGuestRegister(cbi.instruction.r.rs));
break;
default:
UnreachableCode();
break;
}
InstructionEpilogue(cbi);
return true;
}
bool CodeGenerator::Compile_lui(const CodeBlockInstruction& cbi)
{
InstructionPrologue(cbi, 1);
@ -897,4 +935,5 @@ bool CodeGenerator::Compile_addiu(const CodeBlockInstruction& cbi)
InstructionEpilogue(cbi);
return true;
}
} // namespace CPU::Recompiler

1
src/core/cpu_recompiler_code_generator.h
View file

@ -169,6 +169,7 @@ private:
bool Compile_ShiftVariable(const CodeBlockInstruction& cbi);
bool Compile_Load(const CodeBlockInstruction& cbi);
bool Compile_Store(const CodeBlockInstruction& cbi);
bool Compile_MoveHiLo(const CodeBlockInstruction& cbi);
bool Compile_lui(const CodeBlockInstruction& cbi);
bool Compile_addiu(const CodeBlockInstruction& cbi);

6
src/core/cpu_types.cpp
View file

@ -3,9 +3,9 @@
#include <array>
namespace CPU {
static const std::array<const char*, 32> s_reg_names = {
{"$zero", "at", "v0", "v1", "a0", "a1", "a2", "a3", "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7",
"s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", "t8", "t9", "k0", "k1", "gp", "sp", "fp", "ra"}};
static const std::array<const char*, 36> s_reg_names = {
{"$zero", "at", "v0", "v1", "a0", "a1", "a2", "a3", "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "s0", "s1",
"s2", "s3", "s4", "s5", "s6", "s7", "t8", "t9", "k0", "k1", "gp", "sp", "fp", "ra", "hi", "lo", "pc", "npc"}};
const char* GetRegName(Reg reg)
{