//===- AArch64Disassembler.cpp - Disassembler for AArch64 -----------------===// // // 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 // //===----------------------------------------------------------------------===// // // //===----------------------------------------------------------------------===// #include "AArch64Disassembler.h" #include "AArch64ExternalSymbolizer.h" #include "MCTargetDesc/AArch64AddressingModes.h" #include "MCTargetDesc/AArch64MCTargetDesc.h" #include "TargetInfo/AArch64TargetInfo.h" #include "Utils/AArch64BaseInfo.h" #include "llvm-c/Disassembler.h" #include "llvm/MC/MCDecoderOps.h" #include "llvm/MC/MCDisassembler/MCRelocationInfo.h" #include "llvm/MC/MCInst.h" #include "llvm/MC/MCInstrDesc.h" #include "llvm/MC/MCRegisterInfo.h" #include "llvm/MC/MCSubtargetInfo.h" #include "llvm/MC/TargetRegistry.h" #include "llvm/Support/Compiler.h" #include "llvm/Support/Debug.h" #include "llvm/Support/ErrorHandling.h" #include <algorithm> #include <memory> usingnamespacellvm; #define DEBUG_TYPE … // Pull DecodeStatus and its enum values into the global namespace. DecodeStatus; // Forward declare these because the autogenerated code will reference them. // Definitions are further down. template <unsigned RegClassID, unsigned FirstReg, unsigned NumRegsInClass> static DecodeStatus DecodeSimpleRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeGPR64x8ClassRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeZPR2Mul2RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder); static DecodeStatus DecodeZPR4Mul4RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder); template <unsigned NumBitsForTile> static DecodeStatus DecodeMatrixTile(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeMatrixTileListRegisterClass(MCInst &Inst, unsigned RegMask, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodePPR2Mul2RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder); static DecodeStatus DecodeFixedPointScaleImm32(MCInst &Inst, unsigned Imm, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeFixedPointScaleImm64(MCInst &Inst, unsigned Imm, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodePCRelLabel16(MCInst &Inst, unsigned Imm, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodePCRelLabel19(MCInst &Inst, unsigned Imm, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeMemExtend(MCInst &Inst, unsigned Imm, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeMRSSystemRegister(MCInst &Inst, unsigned Imm, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeMSRSystemRegister(MCInst &Inst, unsigned Imm, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeThreeAddrSRegInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeMoveImmInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeUnsignedLdStInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeSignedLdStInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeExclusiveLdStInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodePairLdStInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeAuthLoadInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeAddSubERegInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeLogicalImmInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeModImmInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeModImmTiedInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeAdrInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeAddSubImmShift(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeUnconditionalBranch(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeSystemPStateImm0_15Instruction(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeSystemPStateImm0_1Instruction(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeTestAndBranch(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeFMOVLaneInstruction(MCInst &Inst, unsigned Insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeVecShiftR64Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeVecShiftR64ImmNarrow(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeVecShiftR32Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeVecShiftR32ImmNarrow(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeVecShiftR16Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeVecShiftR16ImmNarrow(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeVecShiftR8Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeVecShiftL64Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeVecShiftL32Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeVecShiftL16Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeVecShiftL8Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeWSeqPairsClassRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeXSeqPairsClassRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeSyspXzrInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeSVELogicalImmInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); template <int Bits> static DecodeStatus DecodeSImm(MCInst &Inst, uint64_t Imm, uint64_t Address, const MCDisassembler *Decoder); template <int ElementWidth> static DecodeStatus DecodeImm8OptLsl(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeSVEIncDecImm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeSVCROp(MCInst &Inst, unsigned Imm, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus DecodeCPYMemOpInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodeSETMemOpInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder); static DecodeStatus DecodePRFMRegInstruction(MCInst &Inst, uint32_t insn, uint64_t Address, const MCDisassembler *Decoder); #include "AArch64GenDisassemblerTables.inc" #include "AArch64GenInstrInfo.inc" #define Success … #define Fail … #define SoftFail … static MCDisassembler *createAArch64Disassembler(const Target &T, const MCSubtargetInfo &STI, MCContext &Ctx) { … } DecodeStatus AArch64Disassembler::getInstruction(MCInst &MI, uint64_t &Size, ArrayRef<uint8_t> Bytes, uint64_t Address, raw_ostream &CS) const { … } uint64_t AArch64Disassembler::suggestBytesToSkip(ArrayRef<uint8_t> Bytes, uint64_t Address) const { … } static MCSymbolizer * createAArch64ExternalSymbolizer(const Triple &TT, LLVMOpInfoCallback GetOpInfo, LLVMSymbolLookupCallback SymbolLookUp, void *DisInfo, MCContext *Ctx, std::unique_ptr<MCRelocationInfo> &&RelInfo) { … } extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeAArch64Disassembler() { … } template <unsigned RegClassID, unsigned FirstReg, unsigned NumRegsInClass> static DecodeStatus DecodeSimpleRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeGPR64x8ClassRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeZPR2Mul2RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder) { … } static DecodeStatus DecodeZPR4Mul4RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder) { … } static DecodeStatus DecodeMatrixTileListRegisterClass(MCInst &Inst, unsigned RegMask, uint64_t Address, const MCDisassembler *Decoder) { … } static const MCPhysReg MatrixZATileDecoderTable[5][16] = …; template <unsigned NumBitsForTile> static DecodeStatus DecodeMatrixTile(MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodePPR2Mul2RegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder) { … } static DecodeStatus DecodeFixedPointScaleImm32(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeFixedPointScaleImm64(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodePCRelLabel16(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodePCRelLabel19(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeMemExtend(MCInst &Inst, unsigned Imm, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeMRSSystemRegister(MCInst &Inst, unsigned Imm, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeMSRSystemRegister(MCInst &Inst, unsigned Imm, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeFMOVLaneInstruction(MCInst &Inst, unsigned Insn, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeVecShiftRImm(MCInst &Inst, unsigned Imm, unsigned Add) { … } static DecodeStatus DecodeVecShiftLImm(MCInst &Inst, unsigned Imm, unsigned Add) { … } static DecodeStatus DecodeVecShiftR64Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeVecShiftR64ImmNarrow(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeVecShiftR32Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeVecShiftR32ImmNarrow(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeVecShiftR16Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeVecShiftR16ImmNarrow(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeVecShiftR8Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeVecShiftL64Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeVecShiftL32Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeVecShiftL16Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeVecShiftL8Imm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeThreeAddrSRegInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeMoveImmInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeUnsignedLdStInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeSignedLdStInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeExclusiveLdStInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodePairLdStInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeAuthLoadInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeAddSubERegInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeLogicalImmInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeModImmInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeModImmTiedInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeAdrInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeAddSubImmShift(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeUnconditionalBranch(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static bool isInvalidPState(uint64_t Op1, uint64_t Op2) { … } static DecodeStatus DecodeSystemPStateImm0_15Instruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeSystemPStateImm0_1Instruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeTestAndBranch(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeGPRSeqPairsClassRegisterClass(MCInst &Inst, unsigned RegClassID, unsigned RegNo, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeWSeqPairsClassRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeXSeqPairsClassRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeSyspXzrInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeSVELogicalImmInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } template <int Bits> static DecodeStatus DecodeSImm(MCInst &Inst, uint64_t Imm, uint64_t Address, const MCDisassembler *Decoder) { … } // Decode 8-bit signed/unsigned immediate for a given element width. template <int ElementWidth> static DecodeStatus DecodeImm8OptLsl(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } // Decode uimm4 ranged from 1-16. static DecodeStatus DecodeSVEIncDecImm(MCInst &Inst, unsigned Imm, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeSVCROp(MCInst &Inst, unsigned Imm, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeCPYMemOpInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeSETMemOpInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … } static DecodeStatus DecodePRFMRegInstruction(MCInst &Inst, uint32_t insn, uint64_t Addr, const MCDisassembler *Decoder) { … }
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