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Merge pull request #9825 from JosJuice/jitarm64-mcrfs

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JitArm64: Implement mcrfs
This commit is contained in:
Léo Lam 2021-06-24 03:05:15 +02:00 committed by GitHub
commit c77a5f7e32
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 46 additions and 5 deletions
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10
Source/Core/Core/PowerPC/Jit64/Jit_SystemRegisters.cpp
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@ -638,20 +638,26 @@ void Jit64::mcrfs(UGeckoInstruction inst)
// Only clear exception bits (but not FEX/VX).
mask &= FPSCR_FX | FPSCR_ANY_X;
MOV(32, R(RSCRATCH), PPCSTATE(fpscr));
if (cpu_info.bBMI1)
{
MOV(32, R(RSCRATCH), PPCSTATE(fpscr));
MOV(32, R(RSCRATCH2), Imm32((4 << 8) | shift));
BEXTR(32, RSCRATCH2, R(RSCRATCH), RSCRATCH2);
}
else
{
MOV(32, R(RSCRATCH2), R(RSCRATCH));
MOV(32, R(RSCRATCH2), PPCSTATE(fpscr));
if (mask != 0)
MOV(32, R(RSCRATCH), R(RSCRATCH2));
SHR(32, R(RSCRATCH2), Imm8(shift));
AND(32, R(RSCRATCH2), Imm32(0xF));
}
if (mask != 0)
{
AND(32, R(RSCRATCH), Imm32(~mask));
MOV(32, PPCSTATE(fpscr), R(RSCRATCH));
}
LEA(64, RSCRATCH, MConst(PowerPC::ConditionRegister::s_crTable));
MOV(64, R(RSCRATCH), MComplex(RSCRATCH, RSCRATCH2, SCALE_8, 0));
MOV(64, CROffset(inst.CRFD), R(RSCRATCH));

1
Source/Core/Core/PowerPC/JitArm64/Jit.h
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@ -118,6 +118,7 @@ public:
void crXXX(UGeckoInstruction inst);
void mfcr(UGeckoInstruction inst);
void mtcrf(UGeckoInstruction inst);
void mcrfs(UGeckoInstruction inst);
// LoadStore
void lXX(UGeckoInstruction inst);

34
Source/Core/Core/PowerPC/JitArm64/JitArm64_SystemRegisters.cpp
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@ -687,3 +687,37 @@ void JitArm64::mtcrf(UGeckoInstruction inst)
gpr.Unlock(WB);
}
}
void JitArm64::mcrfs(UGeckoInstruction inst)
{
INSTRUCTION_START
JITDISABLE(bJITSystemRegistersOff);
u8 shift = 4 * (7 - inst.CRFS);
u32 mask = 0xF << shift;
u32 field = inst.CRFD;
// Only clear exception bits (but not FEX/VX).
mask &= FPSCR_FX | FPSCR_ANY_X;
gpr.BindCRToRegister(field, false);
ARM64Reg CR = gpr.CR(field);
ARM64Reg WA = gpr.GetReg();
ARM64Reg WCR = EncodeRegTo32(CR);
ARM64Reg XA = EncodeRegTo64(WA);
LDR(IndexType::Unsigned, WA, PPC_REG, PPCSTATE_OFF(fpscr));
LSR(WCR, WA, shift);
ANDI2R(WCR, WCR, 0xF);
if (mask != 0)
{
ANDI2R(WA, WA, ~mask);
STR(IndexType::Unsigned, WA, PPC_REG, PPCSTATE_OFF(fpscr));
}
MOVP2R(XA, PowerPC::ConditionRegister::s_crTable.data());
LDR(CR, XA, ArithOption(CR, true));
gpr.Unlock(WA);
}

2
Source/Core/Core/PowerPC/JitArm64/JitArm64_Tables.cpp
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@ -315,7 +315,7 @@ constexpr std::array<GekkoOPTemplate, 15> table63{{
{40, &JitArm64::fp_logic}, // fnegx
{12, &JitArm64::frspx}, // frspx
{64, &JitArm64::FallBackToInterpreter}, // mcrfs
{64, &JitArm64::mcrfs}, // mcrfs
{583, &JitArm64::FallBackToInterpreter}, // mffsx
{70, &JitArm64::FallBackToInterpreter}, // mtfsb0x
{38, &JitArm64::FallBackToInterpreter}, // mtfsb1x