//===-- RISCVDisassembler.cpp - Disassembler for RISC-V -------------------===// // // 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 implements the RISCVDisassembler class. // //===----------------------------------------------------------------------===// #include "MCTargetDesc/RISCVBaseInfo.h" #include "MCTargetDesc/RISCVMCTargetDesc.h" #include "TargetInfo/RISCVTargetInfo.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/MCInstrInfo.h" #include "llvm/MC/MCRegisterInfo.h" #include "llvm/MC/MCSubtargetInfo.h" #include "llvm/MC/TargetRegistry.h" #include "llvm/Support/Endian.h" usingnamespacellvm; #define DEBUG_TYPE … DecodeStatus; namespace { class RISCVDisassembler : public MCDisassembler { … }; } // end anonymous namespace static MCDisassembler *createRISCVDisassembler(const Target &T, const MCSubtargetInfo &STI, MCContext &Ctx) { … } extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeRISCVDisassembler() { … } static DecodeStatus DecodeGPRRegisterClass(MCInst &Inst, uint32_t RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeGPRX1X5RegisterClass(MCInst &Inst, uint32_t RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeFPR16RegisterClass(MCInst &Inst, uint32_t RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeFPR32RegisterClass(MCInst &Inst, uint32_t RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeFPR32CRegisterClass(MCInst &Inst, uint32_t RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeFPR64RegisterClass(MCInst &Inst, uint32_t RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeFPR64CRegisterClass(MCInst &Inst, uint32_t RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeGPRNoX0RegisterClass(MCInst &Inst, uint32_t RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeGPRNoX0X2RegisterClass(MCInst &Inst, uint64_t RegNo, uint32_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeGPRCRegisterClass(MCInst &Inst, uint32_t RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeGPRPairRegisterClass(MCInst &Inst, uint32_t RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeSR07RegisterClass(MCInst &Inst, uint32_t RegNo, uint64_t Address, const void *Decoder) { … } static DecodeStatus DecodeVRRegisterClass(MCInst &Inst, uint32_t RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeVRM2RegisterClass(MCInst &Inst, uint32_t RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeVRM4RegisterClass(MCInst &Inst, uint32_t RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus DecodeVRM8RegisterClass(MCInst &Inst, uint32_t RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus decodeVMaskReg(MCInst &Inst, uint32_t RegNo, uint64_t Address, const MCDisassembler *Decoder) { … } template <unsigned N> static DecodeStatus decodeUImmOperand(MCInst &Inst, uint32_t Imm, int64_t Address, const MCDisassembler *Decoder) { … } template <unsigned N> static DecodeStatus decodeUImmNonZeroOperand(MCInst &Inst, uint32_t Imm, int64_t Address, const MCDisassembler *Decoder) { … } template <unsigned N> static DecodeStatus decodeSImmOperand(MCInst &Inst, uint32_t Imm, int64_t Address, const MCDisassembler *Decoder) { … } template <unsigned N> static DecodeStatus decodeSImmNonZeroOperand(MCInst &Inst, uint32_t Imm, int64_t Address, const MCDisassembler *Decoder) { … } template <unsigned N> static DecodeStatus decodeSImmOperandAndLsl1(MCInst &Inst, uint32_t Imm, int64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus decodeCLUIImmOperand(MCInst &Inst, uint32_t Imm, int64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus decodeFRMArg(MCInst &Inst, uint32_t Imm, int64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus decodeRVCInstrRdRs1ImmZero(MCInst &Inst, uint32_t Insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus decodeRVCInstrRdSImm(MCInst &Inst, uint32_t Insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus decodeRVCInstrRdRs1UImm(MCInst &Inst, uint32_t Insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus decodeRVCInstrRdRs2(MCInst &Inst, uint32_t Insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus decodeRVCInstrRdRs1Rs2(MCInst &Inst, uint32_t Insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus decodeXTHeadMemPair(MCInst &Inst, uint32_t Insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus decodeZcmpRlist(MCInst &Inst, uint32_t Imm, uint64_t Address, const void *Decoder); static DecodeStatus decodeRegReg(MCInst &Inst, uint32_t Insn, uint64_t Address, const MCDisassembler *Decoder); static DecodeStatus decodeZcmpSpimm(MCInst &Inst, uint32_t Imm, uint64_t Address, const void *Decoder); static DecodeStatus decodeCSSPushPopchk(MCInst &Inst, uint32_t Insn, uint64_t Address, const MCDisassembler *Decoder); #include "RISCVGenDisassemblerTables.inc" static DecodeStatus decodeRVCInstrRdRs1ImmZero(MCInst &Inst, uint32_t Insn, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus decodeCSSPushPopchk(MCInst &Inst, uint32_t Insn, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus decodeRVCInstrRdSImm(MCInst &Inst, uint32_t Insn, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus decodeRVCInstrRdRs1UImm(MCInst &Inst, uint32_t Insn, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus decodeRVCInstrRdRs2(MCInst &Inst, uint32_t Insn, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus decodeRVCInstrRdRs1Rs2(MCInst &Inst, uint32_t Insn, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus decodeXTHeadMemPair(MCInst &Inst, uint32_t Insn, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus decodeZcmpRlist(MCInst &Inst, uint32_t Imm, uint64_t Address, const void *Decoder) { … } static DecodeStatus decodeRegReg(MCInst &Inst, uint32_t Insn, uint64_t Address, const MCDisassembler *Decoder) { … } static DecodeStatus decodeZcmpSpimm(MCInst &Inst, uint32_t Imm, uint64_t Address, const void *Decoder) { … } // Add implied SP operand for C.*SP compressed instructions. The SP operand // isn't explicitly encoded in the instruction. void RISCVDisassembler::addSPOperands(MCInst &MI) const { … } #define TRY_TO_DECODE_WITH_ADDITIONAL_OPERATION(FEATURE_CHECKS, DECODER_TABLE, \ DESC, ADDITIONAL_OPERATION) … #define TRY_TO_DECODE_AND_ADD_SP(FEATURE_CHECKS, DECODER_TABLE, DESC) … #define TRY_TO_DECODE(FEATURE_CHECKS, DECODER_TABLE, DESC) … #define TRY_TO_DECODE_FEATURE(FEATURE, DECODER_TABLE, DESC) … DecodeStatus RISCVDisassembler::getInstruction32(MCInst &MI, uint64_t &Size, ArrayRef<uint8_t> Bytes, uint64_t Address, raw_ostream &CS) const { … } DecodeStatus RISCVDisassembler::getInstruction16(MCInst &MI, uint64_t &Size, ArrayRef<uint8_t> Bytes, uint64_t Address, raw_ostream &CS) const { … } DecodeStatus RISCVDisassembler::getInstruction(MCInst &MI, uint64_t &Size, ArrayRef<uint8_t> Bytes, uint64_t Address, raw_ostream &CS) const { … }
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