diff options
Diffstat (limited to 'llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp b/llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp index dae1345f708..440219dc9af 100644 --- a/llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp +++ b/llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp @@ -256,6 +256,26 @@ static bool translateSrcIndex(MCInst &mcInst, InternalInstruction &insn) { return false; } +/// translateDstIndex - Appends a destination index operand to an MCInst. +/// +/// @param mcInst - The MCInst to append to. +/// @param operand - The operand, as stored in the descriptor table. +/// @param insn - The internal instruction. + +static bool translateDstIndex(MCInst &mcInst, InternalInstruction &insn) { + unsigned baseRegNo; + + if (insn.mode == MODE_64BIT) + baseRegNo = insn.prefixPresent[0x67] ? X86::EDI : X86::RDI; + else if (insn.mode == MODE_32BIT) + baseRegNo = insn.prefixPresent[0x67] ? X86::DI : X86::EDI; + else if (insn.mode == MODE_16BIT) + baseRegNo = insn.prefixPresent[0x67] ? X86::EDI : X86::DI; + MCOperand baseReg = MCOperand::CreateReg(baseRegNo); + mcInst.addOperand(baseReg); + return false; +} + /// translateImmediate - Appends an immediate operand to an MCInst. /// /// @param mcInst - The MCInst to append to. @@ -719,6 +739,8 @@ static bool translateOperand(MCInst &mcInst, const OperandSpecifier &operand, return false; case ENCODING_SI: return translateSrcIndex(mcInst, insn); + case ENCODING_DI: + return translateDstIndex(mcInst, insn); case ENCODING_RB: case ENCODING_RW: case ENCODING_RD: |
