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[AArch64] Implement cntlzwx.

This commit is contained in:
Ryan Houdek 2014-09-20 14:52:56 -05:00
parent 76d2f331f0
commit 75590a99cb
3 changed files with 29 additions and 1 deletions
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1
Source/Core/Core/PowerPC/JitArm64/Jit.h
View File

@ -81,6 +81,7 @@ public:
void arith_imm(UGeckoInstruction inst);
void boolX(UGeckoInstruction inst);
void extsXx(UGeckoInstruction inst);
void cntlzwx(UGeckoInstruction inst);
// System Registers
void mtmsr(UGeckoInstruction inst);

27
Source/Core/Core/PowerPC/JitArm64/JitArm64_Integer.cpp
View File

@ -243,3 +243,30 @@ void JitArm64::extsXx(UGeckoInstruction inst)
if (inst.Rc)
ComputeRC(a);
}
void JitArm64::cntlzwx(UGeckoInstruction inst)
{
INSTRUCTION_START
JITDISABLE(bJITIntegerOff);
int a = inst.RA;
int s = inst.RS;
if (gpr.IsImm(s))
{
u32 mask = 0x80000000;
u32 i = 0;
for (; i < 32; i++, mask >>= 1)
{
if ((u32)gpr.GetImm(s) & mask)
break;
}
gpr.SetImmediate(a, i);
}
else
{
CLZ(gpr.R(a), gpr.R(s));
}
if (inst.Rc)
ComputeRC(a);
}

2
Source/Core/Core/PowerPC/JitArm64/JitArm64_Tables.cpp
View File

@ -191,7 +191,7 @@ static GekkoOPTemplate table31[] =
{284, &JitArm64::boolX}, //"eqvx", OPTYPE_INTEGER, FL_OUT_A | FL_IN_SB | FL_RC_BIT}},
{0, &JitArm64::FallBackToInterpreter}, //"cmp", OPTYPE_INTEGER, FL_IN_AB | FL_SET_CRn}},
{32, &JitArm64::FallBackToInterpreter}, //"cmpl", OPTYPE_INTEGER, FL_IN_AB | FL_SET_CRn}},
{26, &JitArm64::FallBackToInterpreter}, //"cntlzwx",OPTYPE_INTEGER, FL_OUT_A | FL_IN_S | FL_RC_BIT}},
{26, &JitArm64::cntlzwx}, //"cntlzwx",OPTYPE_INTEGER, FL_OUT_A | FL_IN_S | FL_RC_BIT}},
{922, &JitArm64::extsXx}, //"extshx", OPTYPE_INTEGER, FL_OUT_A | FL_IN_S | FL_RC_BIT}},
{954, &JitArm64::extsXx}, //"extsbx", OPTYPE_INTEGER, FL_OUT_A | FL_IN_S | FL_RC_BIT}},
{536, &JitArm64::FallBackToInterpreter}, //"srwx", OPTYPE_INTEGER, FL_OUT_A | FL_IN_B | FL_IN_S | FL_RC_BIT}},