+static const uint8_t segmentRegnums[SEG_OVERRIDE_max] = {
+ 0, // SEG_OVERRIDE_NONE
+ X86::CS,
+ X86::SS,
+ X86::DS,
+ X86::ES,
+ X86::FS,
+ X86::GS
+};
+
+/// translateSrcIndex - Appends a source index operand to an MCInst.
+///
+/// @param mcInst - The MCInst to append to.
+/// @param insn - The internal instruction.
+static bool translateSrcIndex(MCInst &mcInst, InternalInstruction &insn) {
+ unsigned baseRegNo;
+
+ if (insn.mode == MODE_64BIT)
+ baseRegNo = insn.prefixPresent[0x67] ? X86::ESI : X86::RSI;
+ else if (insn.mode == MODE_32BIT)
+ baseRegNo = insn.prefixPresent[0x67] ? X86::SI : X86::ESI;
+ else {
+ assert(insn.mode == MODE_16BIT);
+ baseRegNo = insn.prefixPresent[0x67] ? X86::ESI : X86::SI;
+ }
+ MCOperand baseReg = MCOperand::CreateReg(baseRegNo);
+ mcInst.addOperand(baseReg);
+
+ MCOperand segmentReg;
+ segmentReg = MCOperand::CreateReg(segmentRegnums[insn.segmentOverride]);
+ mcInst.addOperand(segmentReg);
+ return false;
+}
+
+/// translateDstIndex - Appends a destination index operand to an MCInst.
+///
+/// @param mcInst - The MCInst to append to.
+/// @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 {
+ assert(insn.mode == MODE_16BIT);
+ baseRegNo = insn.prefixPresent[0x67] ? X86::EDI : X86::DI;
+ }
+ MCOperand baseReg = MCOperand::CreateReg(baseRegNo);
+ mcInst.addOperand(baseReg);
+ return false;
+}
+