diff options
Diffstat (limited to 'src/vm/i386/stublinkerx86.cpp')
| -rw-r--r-- | src/vm/i386/stublinkerx86.cpp | 75 |
1 files changed, 74 insertions, 1 deletions
diff --git a/src/vm/i386/stublinkerx86.cpp b/src/vm/i386/stublinkerx86.cpp index 7020e40e51..983fc3f36a 100644 --- a/src/vm/i386/stublinkerx86.cpp +++ b/src/vm/i386/stublinkerx86.cpp @@ -1739,6 +1739,49 @@ VOID StubLinkerCPU::X64EmitMovSSToMem(X86Reg Xmmreg, X86Reg baseReg, __int32 ofs X64EmitMovXmmWorker(0xF3, 0x11, Xmmreg, baseReg, ofs); } +VOID StubLinkerCPU::X64EmitMovqRegXmm(X86Reg reg, X86Reg Xmmreg) +{ + STANDARD_VM_CONTRACT; + X64EmitMovqWorker(0x7e, Xmmreg, reg); +} + +VOID StubLinkerCPU::X64EmitMovqXmmReg(X86Reg Xmmreg, X86Reg reg) +{ + STANDARD_VM_CONTRACT; + X64EmitMovqWorker(0x6e, Xmmreg, reg); +} + +//----------------------------------------------------------------------------- +// Helper method for emitting movq between xmm and general purpose reqister +//----------------------------------------------------------------------------- +VOID StubLinkerCPU::X64EmitMovqWorker(BYTE opcode, X86Reg Xmmreg, X86Reg reg) +{ + BYTE codeBuffer[10]; + unsigned int nBytes = 0; + codeBuffer[nBytes++] = 0x66; + BYTE rex = REX_PREFIX_BASE | REX_OPERAND_SIZE_64BIT; + if (reg >= kR8) + { + rex |= REX_MODRM_RM_EXT; + reg = X86RegFromAMD64Reg(reg); + } + if (Xmmreg >= kXMM8) + { + rex |= REX_MODRM_REG_EXT; + Xmmreg = X86RegFromAMD64Reg(Xmmreg); + } + codeBuffer[nBytes++] = rex; + codeBuffer[nBytes++] = 0x0f; + codeBuffer[nBytes++] = opcode; + BYTE modrm = static_cast<BYTE>((Xmmreg << 3) | reg); + codeBuffer[nBytes++] = 0xC0|modrm; + + _ASSERTE(nBytes <= _countof(codeBuffer)); + + // Lastly, emit the encoded bytes + EmitBytes(codeBuffer, nBytes); +} + //--------------------------------------------------------------- // Helper method for emitting of XMM from/to memory moves //--------------------------------------------------------------- @@ -3800,7 +3843,37 @@ VOID StubLinkerCPU::EmitShuffleThunk(ShuffleEntry *pShuffleEntryArray) #ifdef UNIX_AMD64_ABI for (ShuffleEntry* pEntry = pShuffleEntryArray; pEntry->srcofs != ShuffleEntry::SENTINEL; pEntry++) { - if (pEntry->srcofs & ShuffleEntry::REGMASK) + if (pEntry->srcofs == ShuffleEntry::HELPERREG) + { + if (pEntry->dstofs & ShuffleEntry::REGMASK) + { + // movq dstReg, xmm8 + int dstRegIndex = pEntry->dstofs & ShuffleEntry::OFSREGMASK; + X64EmitMovqRegXmm(c_argRegs[dstRegIndex], (X86Reg)kXMM8); + } + else + { + // movsd [rax + dst], xmm8 + int dstOffset = (pEntry->dstofs + 1) * sizeof(void*); + X64EmitMovSDToMem((X86Reg)kXMM8, SCRATCH_REGISTER_X86REG, dstOffset); + } + } + else if (pEntry->dstofs == ShuffleEntry::HELPERREG) + { + if (pEntry->srcofs & ShuffleEntry::REGMASK) + { + // movq xmm8, srcReg + int srcRegIndex = pEntry->srcofs & ShuffleEntry::OFSREGMASK; + X64EmitMovqXmmReg((X86Reg)kXMM8, c_argRegs[srcRegIndex]); + } + else + { + // movsd xmm8, [rax + src] + int srcOffset = (pEntry->srcofs + 1) * sizeof(void*); + X64EmitMovSDFromMem((X86Reg)(kXMM8), SCRATCH_REGISTER_X86REG, srcOffset); + } + } + else if (pEntry->srcofs & ShuffleEntry::REGMASK) { // Source in a general purpose or float register, destination in the same kind of a register or on stack int srcRegIndex = pEntry->srcofs & ShuffleEntry::OFSREGMASK; |