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Merge pull request #1050 from Sonicadvance1/AArch64-sign-extend 

Add sign extending aliases to the ARM64Emitter.
This commit is contained in:
Ryan Houdek 2014-09-10 20:17:50 -05:00
parent eea9be6dc1 24f6c98a55
commit 581c81ce1c
2 changed files with 17 additions and 0 deletions
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14
Source/Core/Common/Arm64Emitter.cpp
View File

@ -1081,6 +1081,20 @@ void ARM64XEmitter::UBFM(ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms)
{
EncodeBitfieldMOVInst(2, Rd, Rn, immr, imms);
}
void ARM64XEmitter::SXTB(ARM64Reg Rd, ARM64Reg Rn)
{
SBFM(Rd, Rn, 0, 7);
}
void ARM64XEmitter::SXTH(ARM64Reg Rd, ARM64Reg Rn)
{
SBFM(Rd, Rn, 0, 15);
}
void ARM64XEmitter::SXTW(ARM64Reg Rd, ARM64Reg Rn)
{
_assert_msg_(DYNA_REC, Is64Bit(Rd), "%s requires 64bit register as destination", __FUNCTION__);
SBFM(Rd, Rn, 0, 31);
}
// Load Register (Literal)
void ARM64XEmitter::LDR(ARM64Reg Rt, u32 imm)

3
Source/Core/Common/Arm64Emitter.h
View File

@ -477,6 +477,9 @@ public:
void BFM(ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms);
void SBFM(ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms);
void UBFM(ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms);
void SXTB(ARM64Reg Rd, ARM64Reg Rn);
void SXTH(ARM64Reg Rd, ARM64Reg Rn);
void SXTW(ARM64Reg Rd, ARM64Reg Rn);
// Load Register (Literal)
void LDR(ARM64Reg Rt, u32 imm);