//===- VEDisassembler.cpp - Disassembler for VE -----------------*- C++ -*-===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // // This file is part of the VE Disassembler. // //===----------------------------------------------------------------------===// #include "MCTargetDesc/VEMCTargetDesc.h" #include "TargetInfo/VETargetInfo.h" #include "VE.h" #include "llvm/MC/MCAsmInfo.h" #include "llvm/MC/MCContext.h" #include "llvm/MC/MCDecoderOps.h" #include "llvm/MC/MCDisassembler/MCDisassembler.h" #include "llvm/MC/MCInst.h" #include "llvm/MC/TargetRegistry.h" using namespace llvm; #define DEBUG_TYPE "ve-disassembler" typedef MCDisassembler::DecodeStatus DecodeStatus; namespace { /// A disassembler class for VE. class VEDisassembler : public MCDisassembler { public: VEDisassembler(const MCSubtargetInfo &STI, MCContext &Ctx) : MCDisassembler(STI, Ctx) {} virtual ~VEDisassembler() = default; DecodeStatus getInstruction(MCInst &Instr, uint64_t &Size, ArrayRef Bytes, uint64_t Address, raw_ostream &CStream) const override; }; } // namespace static MCDisassembler *createVEDisassembler(const Target &T, const MCSubtargetInfo &STI, MCContext &Ctx) { return new VEDisassembler(STI, Ctx); } extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeVEDisassembler() { // Register the disassembler. TargetRegistry::RegisterMCDisassembler(getTheVETarget(), createVEDisassembler); } static const unsigned I32RegDecoderTable[] = { VE::SW0, VE::SW1, VE::SW2, VE::SW3, VE::SW4, VE::SW5, VE::SW6, VE::SW7, VE::SW8, VE::SW9, VE::SW10, VE::SW11, VE::SW12, VE::SW13, VE::SW14, VE::SW15, VE::SW16, VE::SW17, VE::SW18, VE::SW19, VE::SW20, VE::SW21, VE::SW22, VE::SW23, VE::SW24, VE::SW25, VE::SW26, VE::SW27, VE::SW28, VE::SW29, VE::SW30, VE::SW31, VE::SW32, VE::SW33, VE::SW34, VE::SW35, VE::SW36, VE::SW37, VE::SW38, VE::SW39, VE::SW40, VE::SW41, VE::SW42, VE::SW43, VE::SW44, VE::SW45, VE::SW46, VE::SW47, VE::SW48, VE::SW49, VE::SW50, VE::SW51, VE::SW52, VE::SW53, VE::SW54, VE::SW55, VE::SW56, VE::SW57, VE::SW58, VE::SW59, VE::SW60, VE::SW61, VE::SW62, VE::SW63}; static const unsigned I64RegDecoderTable[] = { VE::SX0, VE::SX1, VE::SX2, VE::SX3, VE::SX4, VE::SX5, VE::SX6, VE::SX7, VE::SX8, VE::SX9, VE::SX10, VE::SX11, VE::SX12, VE::SX13, VE::SX14, VE::SX15, VE::SX16, VE::SX17, VE::SX18, VE::SX19, VE::SX20, VE::SX21, VE::SX22, VE::SX23, VE::SX24, VE::SX25, VE::SX26, VE::SX27, VE::SX28, VE::SX29, VE::SX30, VE::SX31, VE::SX32, VE::SX33, VE::SX34, VE::SX35, VE::SX36, VE::SX37, VE::SX38, VE::SX39, VE::SX40, VE::SX41, VE::SX42, VE::SX43, VE::SX44, VE::SX45, VE::SX46, VE::SX47, VE::SX48, VE::SX49, VE::SX50, VE::SX51, VE::SX52, VE::SX53, VE::SX54, VE::SX55, VE::SX56, VE::SX57, VE::SX58, VE::SX59, VE::SX60, VE::SX61, VE::SX62, VE::SX63}; static const unsigned F32RegDecoderTable[] = { VE::SF0, VE::SF1, VE::SF2, VE::SF3, VE::SF4, VE::SF5, VE::SF6, VE::SF7, VE::SF8, VE::SF9, VE::SF10, VE::SF11, VE::SF12, VE::SF13, VE::SF14, VE::SF15, VE::SF16, VE::SF17, VE::SF18, VE::SF19, VE::SF20, VE::SF21, VE::SF22, VE::SF23, VE::SF24, VE::SF25, VE::SF26, VE::SF27, VE::SF28, VE::SF29, VE::SF30, VE::SF31, VE::SF32, VE::SF33, VE::SF34, VE::SF35, VE::SF36, VE::SF37, VE::SF38, VE::SF39, VE::SF40, VE::SF41, VE::SF42, VE::SF43, VE::SF44, VE::SF45, VE::SF46, VE::SF47, VE::SF48, VE::SF49, VE::SF50, VE::SF51, VE::SF52, VE::SF53, VE::SF54, VE::SF55, VE::SF56, VE::SF57, VE::SF58, VE::SF59, VE::SF60, VE::SF61, VE::SF62, VE::SF63}; static const unsigned F128RegDecoderTable[] = { VE::Q0, VE::Q1, VE::Q2, VE::Q3, VE::Q4, VE::Q5, VE::Q6, VE::Q7, VE::Q8, VE::Q9, VE::Q10, VE::Q11, VE::Q12, VE::Q13, VE::Q14, VE::Q15, VE::Q16, VE::Q17, VE::Q18, VE::Q19, VE::Q20, VE::Q21, VE::Q22, VE::Q23, VE::Q24, VE::Q25, VE::Q26, VE::Q27, VE::Q28, VE::Q29, VE::Q30, VE::Q31}; static const unsigned V64RegDecoderTable[] = { VE::V0, VE::V1, VE::V2, VE::V3, VE::V4, VE::V5, VE::V6, VE::V7, VE::V8, VE::V9, VE::V10, VE::V11, VE::V12, VE::V13, VE::V14, VE::V15, VE::V16, VE::V17, VE::V18, VE::V19, VE::V20, VE::V21, VE::V22, VE::V23, VE::V24, VE::V25, VE::V26, VE::V27, VE::V28, VE::V29, VE::V30, VE::V31, VE::V32, VE::V33, VE::V34, VE::V35, VE::V36, VE::V37, VE::V38, VE::V39, VE::V40, VE::V41, VE::V42, VE::V43, VE::V44, VE::V45, VE::V46, VE::V47, VE::V48, VE::V49, VE::V50, VE::V51, VE::V52, VE::V53, VE::V54, VE::V55, VE::V56, VE::V57, VE::V58, VE::V59, VE::V60, VE::V61, VE::V62, VE::V63}; static const unsigned VMRegDecoderTable[] = { VE::VM0, VE::VM1, VE::VM2, VE::VM3, VE::VM4, VE::VM5, VE::VM6, VE::VM7, VE::VM8, VE::VM9, VE::VM10, VE::VM11, VE::VM12, VE::VM13, VE::VM14, VE::VM15}; static const unsigned VM512RegDecoderTable[] = {VE::VMP0, VE::VMP1, VE::VMP2, VE::VMP3, VE::VMP4, VE::VMP5, VE::VMP6, VE::VMP7}; static const unsigned MiscRegDecoderTable[] = { VE::USRCC, VE::PSW, VE::SAR, VE::NoRegister, VE::NoRegister, VE::NoRegister, VE::NoRegister, VE::PMMR, VE::PMCR0, VE::PMCR1, VE::PMCR2, VE::PMCR3, VE::NoRegister, VE::NoRegister, VE::NoRegister, VE::NoRegister, VE::PMC0, VE::PMC1, VE::PMC2, VE::PMC3, VE::PMC4, VE::PMC5, VE::PMC6, VE::PMC7, VE::PMC8, VE::PMC9, VE::PMC10, VE::PMC11, VE::PMC12, VE::PMC13, VE::PMC14}; static DecodeStatus DecodeI32RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder) { if (RegNo > 63) return MCDisassembler::Fail; unsigned Reg = I32RegDecoderTable[RegNo]; Inst.addOperand(MCOperand::createReg(Reg)); return MCDisassembler::Success; } static DecodeStatus DecodeI64RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder) { if (RegNo > 63) return MCDisassembler::Fail; unsigned Reg = I64RegDecoderTable[RegNo]; Inst.addOperand(MCOperand::createReg(Reg)); return MCDisassembler::Success; } static DecodeStatus DecodeF32RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder) { if (RegNo > 63) return MCDisassembler::Fail; unsigned Reg = F32RegDecoderTable[RegNo]; Inst.addOperand(MCOperand::createReg(Reg)); return MCDisassembler::Success; } static DecodeStatus DecodeF128RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder) { if (RegNo % 2 || RegNo > 63) return MCDisassembler::Fail; unsigned Reg = F128RegDecoderTable[RegNo / 2]; Inst.addOperand(MCOperand::createReg(Reg)); return MCDisassembler::Success; } static DecodeStatus DecodeV64RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder) { unsigned Reg = VE::NoRegister; if (RegNo == 255) Reg = VE::VIX; else if (RegNo > 63) return MCDisassembler::Fail; else Reg = V64RegDecoderTable[RegNo]; Inst.addOperand(MCOperand::createReg(Reg)); return MCDisassembler::Success; } static DecodeStatus DecodeVMRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder) { if (RegNo > 15) return MCDisassembler::Fail; unsigned Reg = VMRegDecoderTable[RegNo]; Inst.addOperand(MCOperand::createReg(Reg)); return MCDisassembler::Success; } static DecodeStatus DecodeVM512RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder) { if (RegNo % 2 || RegNo > 15) return MCDisassembler::Fail; unsigned Reg = VM512RegDecoderTable[RegNo / 2]; Inst.addOperand(MCOperand::createReg(Reg)); return MCDisassembler::Success; } static DecodeStatus DecodeMISCRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder) { if (RegNo > 30) return MCDisassembler::Fail; unsigned Reg = MiscRegDecoderTable[RegNo]; if (Reg == VE::NoRegister) return MCDisassembler::Fail; Inst.addOperand(MCOperand::createReg(Reg)); return MCDisassembler::Success; } static DecodeStatus DecodeASX(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeLoadI32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeStoreI32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeLoadI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeStoreI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeLoadF32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeStoreF32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeLoadASI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeStoreASI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeTS1AMI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeTS1AMI32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeCASI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeCASI32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeCall(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeSIMM7(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeSIMM32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeCCOperand(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeRDOperand(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeBranchCondition(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeBranchConditionAlways(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder); #include "VEGenDisassemblerTables.inc" /// Read four bytes from the ArrayRef and return 32 bit word. static DecodeStatus readInstruction64(ArrayRef Bytes, uint64_t Address, uint64_t &Size, uint64_t &Insn, bool IsLittleEndian) { // We want to read exactly 8 Bytes of data. if (Bytes.size() < 8) { Size = 0; return MCDisassembler::Fail; } Insn = IsLittleEndian ? ((uint64_t)Bytes[0] << 0) | ((uint64_t)Bytes[1] << 8) | ((uint64_t)Bytes[2] << 16) | ((uint64_t)Bytes[3] << 24) | ((uint64_t)Bytes[4] << 32) | ((uint64_t)Bytes[5] << 40) | ((uint64_t)Bytes[6] << 48) | ((uint64_t)Bytes[7] << 56) : ((uint64_t)Bytes[7] << 0) | ((uint64_t)Bytes[6] << 8) | ((uint64_t)Bytes[5] << 16) | ((uint64_t)Bytes[4] << 24) | ((uint64_t)Bytes[3] << 32) | ((uint64_t)Bytes[2] << 40) | ((uint64_t)Bytes[1] << 48) | ((uint64_t)Bytes[0] << 56); return MCDisassembler::Success; } DecodeStatus VEDisassembler::getInstruction(MCInst &Instr, uint64_t &Size, ArrayRef Bytes, uint64_t Address, raw_ostream &CStream) const { uint64_t Insn; bool isLittleEndian = getContext().getAsmInfo()->isLittleEndian(); DecodeStatus Result = readInstruction64(Bytes, Address, Size, Insn, isLittleEndian); if (Result == MCDisassembler::Fail) return MCDisassembler::Fail; // Calling the auto-generated decoder function. Result = decodeInstruction(DecoderTableVE64, Instr, Insn, Address, this, STI); if (Result != MCDisassembler::Fail) { Size = 8; return Result; } return MCDisassembler::Fail; } typedef DecodeStatus (*DecodeFunc)(MCInst &MI, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeASX(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { unsigned sy = fieldFromInstruction(insn, 40, 7); bool cy = fieldFromInstruction(insn, 47, 1); unsigned sz = fieldFromInstruction(insn, 32, 7); bool cz = fieldFromInstruction(insn, 39, 1); uint64_t simm32 = SignExtend64<32>(fieldFromInstruction(insn, 0, 32)); DecodeStatus status; // Decode sz. if (cz) { status = DecodeI64RegisterClass(MI, sz, Address, Decoder); if (status != MCDisassembler::Success) return status; } else { MI.addOperand(MCOperand::createImm(0)); } // Decode sy. if (cy) { status = DecodeI64RegisterClass(MI, sy, Address, Decoder); if (status != MCDisassembler::Success) return status; } else { MI.addOperand(MCOperand::createImm(SignExtend32<7>(sy))); } // Decode simm32. MI.addOperand(MCOperand::createImm(simm32)); return MCDisassembler::Success; } static DecodeStatus DecodeAS(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { unsigned sz = fieldFromInstruction(insn, 32, 7); bool cz = fieldFromInstruction(insn, 39, 1); uint64_t simm32 = SignExtend64<32>(fieldFromInstruction(insn, 0, 32)); DecodeStatus status; // Decode sz. if (cz) { status = DecodeI64RegisterClass(MI, sz, Address, Decoder); if (status != MCDisassembler::Success) return status; } else { MI.addOperand(MCOperand::createImm(0)); } // Decode simm32. MI.addOperand(MCOperand::createImm(simm32)); return MCDisassembler::Success; } static DecodeStatus DecodeMem(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder, bool isLoad, DecodeFunc DecodeSX) { unsigned sx = fieldFromInstruction(insn, 48, 7); DecodeStatus status; if (isLoad) { status = DecodeSX(MI, sx, Address, Decoder); if (status != MCDisassembler::Success) return status; } status = DecodeASX(MI, insn, Address, Decoder); if (status != MCDisassembler::Success) return status; if (!isLoad) { status = DecodeSX(MI, sx, Address, Decoder); if (status != MCDisassembler::Success) return status; } return MCDisassembler::Success; } static DecodeStatus DecodeMemAS(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder, bool isLoad, DecodeFunc DecodeSX) { unsigned sx = fieldFromInstruction(insn, 48, 7); DecodeStatus status; if (isLoad) { status = DecodeSX(MI, sx, Address, Decoder); if (status != MCDisassembler::Success) return status; } status = DecodeAS(MI, insn, Address, Decoder); if (status != MCDisassembler::Success) return status; if (!isLoad) { status = DecodeSX(MI, sx, Address, Decoder); if (status != MCDisassembler::Success) return status; } return MCDisassembler::Success; } static DecodeStatus DecodeLoadI32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { return DecodeMem(Inst, insn, Address, Decoder, true, DecodeI32RegisterClass); } static DecodeStatus DecodeStoreI32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { return DecodeMem(Inst, insn, Address, Decoder, false, DecodeI32RegisterClass); } static DecodeStatus DecodeLoadI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { return DecodeMem(Inst, insn, Address, Decoder, true, DecodeI64RegisterClass); } static DecodeStatus DecodeStoreI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { return DecodeMem(Inst, insn, Address, Decoder, false, DecodeI64RegisterClass); } static DecodeStatus DecodeLoadF32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { return DecodeMem(Inst, insn, Address, Decoder, true, DecodeF32RegisterClass); } static DecodeStatus DecodeStoreF32(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { return DecodeMem(Inst, insn, Address, Decoder, false, DecodeF32RegisterClass); } static DecodeStatus DecodeLoadASI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { return DecodeMemAS(Inst, insn, Address, Decoder, true, DecodeI64RegisterClass); } static DecodeStatus DecodeStoreASI64(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { return DecodeMemAS(Inst, insn, Address, Decoder, false, DecodeI64RegisterClass); } static DecodeStatus DecodeCAS(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder, bool isImmOnly, bool isUImm, DecodeFunc DecodeSX) { unsigned sx = fieldFromInstruction(insn, 48, 7); bool cy = fieldFromInstruction(insn, 47, 1); unsigned sy = fieldFromInstruction(insn, 40, 7); // Add $sx. DecodeStatus status; status = DecodeSX(MI, sx, Address, Decoder); if (status != MCDisassembler::Success) return status; // Add $disp($sz). status = DecodeAS(MI, insn, Address, Decoder); if (status != MCDisassembler::Success) return status; // Add $sy. if (cy && !isImmOnly) { status = DecodeSX(MI, sy, Address, Decoder); if (status != MCDisassembler::Success) return status; } else { if (isUImm) MI.addOperand(MCOperand::createImm(sy)); else MI.addOperand(MCOperand::createImm(SignExtend32<7>(sy))); } // Add $sd. status = DecodeSX(MI, sx, Address, Decoder); if (status != MCDisassembler::Success) return status; return MCDisassembler::Success; } static DecodeStatus DecodeTS1AMI64(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { return DecodeCAS(MI, insn, Address, Decoder, false, true, DecodeI64RegisterClass); } static DecodeStatus DecodeTS1AMI32(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { return DecodeCAS(MI, insn, Address, Decoder, false, true, DecodeI32RegisterClass); } static DecodeStatus DecodeCASI64(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { return DecodeCAS(MI, insn, Address, Decoder, false, false, DecodeI64RegisterClass); } static DecodeStatus DecodeCASI32(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { return DecodeCAS(MI, insn, Address, Decoder, false, false, DecodeI32RegisterClass); } static DecodeStatus DecodeCall(MCInst &Inst, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { return DecodeMem(Inst, insn, Address, Decoder, true, DecodeI64RegisterClass); } static DecodeStatus DecodeSIMM7(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { uint64_t tgt = SignExtend64<7>(insn); MI.addOperand(MCOperand::createImm(tgt)); return MCDisassembler::Success; } static DecodeStatus DecodeSIMM32(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { uint64_t tgt = SignExtend64<32>(insn); MI.addOperand(MCOperand::createImm(tgt)); return MCDisassembler::Success; } static bool isIntegerBCKind(MCInst &MI) { #define BCm_kind(NAME) \ case NAME##rri: \ case NAME##rzi: \ case NAME##iri: \ case NAME##izi: \ case NAME##rri_nt: \ case NAME##rzi_nt: \ case NAME##iri_nt: \ case NAME##izi_nt: \ case NAME##rri_t: \ case NAME##rzi_t: \ case NAME##iri_t: \ case NAME##izi_t: #define BCRm_kind(NAME) \ case NAME##rr: \ case NAME##ir: \ case NAME##rr_nt: \ case NAME##ir_nt: \ case NAME##rr_t: \ case NAME##ir_t: { using namespace llvm::VE; switch (MI.getOpcode()) { BCm_kind(BCFL) BCm_kind(BCFW) BCRm_kind(BRCFL) BCRm_kind(BRCFW) return true; } } #undef BCm_kind return false; } // Decode CC Operand field. static DecodeStatus DecodeCCOperand(MCInst &MI, uint64_t cf, uint64_t Address, const MCDisassembler *Decoder) { MI.addOperand(MCOperand::createImm(VEValToCondCode(cf, isIntegerBCKind(MI)))); return MCDisassembler::Success; } // Decode RD Operand field. static DecodeStatus DecodeRDOperand(MCInst &MI, uint64_t cf, uint64_t Address, const MCDisassembler *Decoder) { MI.addOperand(MCOperand::createImm(VEValToRD(cf))); return MCDisassembler::Success; } // Decode branch condition instruction and CCOperand field in it. static DecodeStatus DecodeBranchCondition(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { unsigned cf = fieldFromInstruction(insn, 48, 4); bool cy = fieldFromInstruction(insn, 47, 1); unsigned sy = fieldFromInstruction(insn, 40, 7); // Decode cf. MI.addOperand(MCOperand::createImm(VEValToCondCode(cf, isIntegerBCKind(MI)))); // Decode sy. DecodeStatus status; if (cy) { status = DecodeI64RegisterClass(MI, sy, Address, Decoder); if (status != MCDisassembler::Success) return status; } else { MI.addOperand(MCOperand::createImm(SignExtend32<7>(sy))); } // Decode MEMri. return DecodeAS(MI, insn, Address, Decoder); } static DecodeStatus DecodeBranchConditionAlways(MCInst &MI, uint64_t insn, uint64_t Address, const MCDisassembler *Decoder) { // Decode MEMri. return DecodeAS(MI, insn, Address, Decoder); }