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JitArm64: Implement subfex

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This commit is contained in:
degasus 2015-08-14 00:29:13 +02:00
parent 73067b1ef1
commit 550a90e691
3 changed files with 63 additions and 2 deletions
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1
Source/Core/Core/PowerPC/JitArm64/Jit.h
View File

@ -99,6 +99,7 @@ public:
void addcx(UGeckoInstruction inst);
void slwx(UGeckoInstruction inst);
void rlwimix(UGeckoInstruction inst);
void subfex(UGeckoInstruction inst);
// System Registers
void mtmsr(UGeckoInstruction inst);

60
Source/Core/Core/PowerPC/JitArm64/JitArm64_Integer.cpp
View File

@ -724,6 +724,66 @@ void JitArm64::subfx(UGeckoInstruction inst)
}
}
void JitArm64::subfex(UGeckoInstruction inst)
{
INSTRUCTION_START
JITDISABLE(bJITIntegerOff);
FALLBACK_IF(inst.OE);
int a = inst.RA, b = inst.RB, d = inst.RD;
if (gpr.IsImm(a) && gpr.IsImm(b))
{
u32 i = gpr.GetImm(a), j = gpr.GetImm(b);
gpr.BindToRegister(d, false);
MOVI2R(gpr.R(d), ~i + j);
ARM64Reg WA = gpr.GetReg();
LDRB(INDEX_UNSIGNED, WA, X29, PPCSTATE_OFF(xer_ca));
ADD(gpr.R(d), gpr.R(d), WA);
gpr.Unlock(WA);
bool must_have_carry = Interpreter::Helper_Carry(~i, j);
bool might_have_carry = (~i + j) == 0xFFFFFFFF;
if (must_have_carry)
{
ComputeCarry(true);
}
else if (might_have_carry)
{
// carry stay as it is
}
else
{
ComputeCarry(false);
}
}
else
{
ARM64Reg WA = gpr.GetReg();
gpr.BindToRegister(d, d == a || d == b);
// upload the carry state
LDRB(INDEX_UNSIGNED, WA, X29, PPCSTATE_OFF(xer_ca));
CMP(WA, 1);
// d = ~a + b + carry;
if (gpr.IsImm(a))
MOVI2R(WA, ~gpr.GetImm(a));
else
MVN(WA, gpr.R(a));
ADCS(gpr.R(d), WA, gpr.R(b));
gpr.Unlock(WA);
ComputeCarry();
}
if (inst.Rc)
ComputeRC(gpr.R(d), 0);
}
void JitArm64::addcx(UGeckoInstruction inst)
{
INSTRUCTION_START

4
Source/Core/Core/PowerPC/JitArm64/JitArm64_Tables.cpp
View File

@ -194,8 +194,8 @@ static GekkoOPTemplate table31[] =
{552, &JitArm64::subfx}, // subfox
{8, &JitArm64::FallBackToInterpreter}, // subfcx
{520, &JitArm64::FallBackToInterpreter}, // subfcox
{136, &JitArm64::FallBackToInterpreter}, // subfex
{648, &JitArm64::FallBackToInterpreter}, // subfeox
{136, &JitArm64::subfex}, // subfex
{648, &JitArm64::subfex}, // subfeox
{232, &JitArm64::FallBackToInterpreter}, // subfmex
{744, &JitArm64::FallBackToInterpreter}, // subfmeox
{200, &JitArm64::FallBackToInterpreter}, // subfzex