ARCDisassembler.cpp File Reference

This file is part of the ARC Disassembler. More...

#include "ARC.h"
#include "ARCRegisterInfo.h"
#include "MCTargetDesc/ARCMCTargetDesc.h"
#include "TargetInfo/ARCTargetInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCDecoder.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/MCSubtargetInfo.h"
#include "llvm/MC/TargetRegistry.h"
#include "ARCGenDisassemblerTables.inc"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "arc-disassembler"

Typedefs
using	DecodeStatus = MCDisassembler::DecodeStatus

Functions
static bool	readInstruction32 (ArrayRef< uint8_t > Bytes, uint64_t Address, uint64_t &Size, uint32_t &Insn)
static bool	readInstruction64 (ArrayRef< uint8_t > Bytes, uint64_t Address, uint64_t &Size, uint64_t &Insn)
static bool	readInstruction48 (ArrayRef< uint8_t > Bytes, uint64_t Address, uint64_t &Size, uint64_t &Insn)
static bool	readInstruction16 (ArrayRef< uint8_t > Bytes, uint64_t Address, uint64_t &Size, uint32_t &Insn)
template<unsigned B>
static DecodeStatus	DecodeSignedOperand (MCInst &Inst, unsigned InsnS, uint64_t Address=0, const MCDisassembler *Decoder=nullptr)
template<unsigned B>
static DecodeStatus	DecodeFromCyclicRange (MCInst &Inst, unsigned InsnS, uint64_t Address=0, const MCDisassembler *Decoder=nullptr)
template<unsigned B>
static DecodeStatus	DecodeBranchTargetS (MCInst &Inst, unsigned InsnS, uint64_t Address, const MCDisassembler *Decoder)
static DecodeStatus	DecodeMEMrs9 (MCInst &, unsigned, uint64_t, const MCDisassembler *)
static DecodeStatus	DecodeLdLImmInstruction (MCInst &, uint64_t, uint64_t, const MCDisassembler *)
static DecodeStatus	DecodeStLImmInstruction (MCInst &, uint64_t, uint64_t, const MCDisassembler *)
static DecodeStatus	DecodeLdRLImmInstruction (MCInst &, uint64_t, uint64_t, const MCDisassembler *)
static DecodeStatus	DecodeSOPwithRS12 (MCInst &, uint64_t, uint64_t, const MCDisassembler *)
static DecodeStatus	DecodeSOPwithRU6 (MCInst &, uint64_t, uint64_t, const MCDisassembler *)
static DecodeStatus	DecodeCCRU6Instruction (MCInst &, uint64_t, uint64_t, const MCDisassembler *)
static DecodeStatus	DecodeMoveHRegInstruction (MCInst &Inst, uint64_t, uint64_t, const MCDisassembler *)
static DecodeStatus	DecodeGPR32RegisterClass (MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
static DecodeStatus	DecodeGBR32ShortRegister (MCInst &Inst, unsigned RegNo, uint64_t Address, const MCDisassembler *Decoder)
static unsigned	decodeCField (unsigned Insn)
static unsigned	decodeBField (unsigned Insn)
static unsigned	decodeAField (unsigned Insn)
static bool	DecodeSymbolicOperand (MCInst &Inst, uint64_t Address, uint64_t Value, const MCDisassembler *Decoder)
static void	DecodeSymbolicOperandOff (MCInst &Inst, uint64_t Address, uint64_t Offset, const MCDisassembler *Decoder)
static MCDisassembler *	createARCDisassembler (const Target &T, const MCSubtargetInfo &STI, MCContext &Ctx)
LLVM_EXTERNAL_VISIBILITY void	LLVMInitializeARCDisassembler ()

Variables
static const uint16_t	GPR32DecoderTable []

Detailed Description

This file is part of the ARC Disassembler.

Definition in file ARCDisassembler.cpp.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "arc-disassembler"

Definition at line 30 of file ARCDisassembler.cpp.

Typedef Documentation

DecodeStatus

using DecodeStatus = MCDisassembler::DecodeStatus

Definition at line 32 of file ARCDisassembler.cpp.

Function Documentation

createARCDisassembler()

static MCDisassembler * createARCDisassembler ( const Target &  T, const MCSubtargetInfo &  STI, MCContext &  Ctx  )

static

Definition at line 413 of file ARCDisassembler.cpp.

Referenced by LLVMInitializeARCDisassembler().

decodeAField()

static unsigned decodeAField ( unsigned  Insn )

static

Definition at line 167 of file ARCDisassembler.cpp.

References llvm::MCD::fieldFromInstruction().

Referenced by DecodeLdLImmInstruction(), and DecodeLdRLImmInstruction().

decodeBField()

static unsigned decodeBField ( unsigned  Insn )

static

Definition at line 162 of file ARCDisassembler.cpp.

References llvm::MCD::fieldFromInstruction().

Referenced by DecodeCCRU6Instruction(), DecodeLdLImmInstruction(), DecodeLdRLImmInstruction(), DecodeSOPwithRS12(), DecodeSOPwithRU6(), and DecodeStLImmInstruction().

DecodeBranchTargetS()

template<unsigned B>

static DecodeStatus DecodeBranchTargetS ( MCInst &  Inst, unsigned  InsnS, uint64_t  Address, const MCDisassembler *  Decoder  )

static

Definition at line 199 of file ARCDisassembler.cpp.

References Address, B, DecodeSymbolicOperandOff(), and llvm::MCDisassembler::Success.

DecodeCCRU6Instruction()

static DecodeStatus DecodeCCRU6Instruction ( MCInst &  Inst, uint64_t  Insn, uint64_t  Address, const MCDisassembler *  Decoder  )

static

Definition at line 309 of file ARCDisassembler.cpp.

References llvm::MCInst::addOperand(), Address, llvm::MCOperand::createImm(), llvm::dbgs(), decodeBField(), DecodeGPR32RegisterClass(), llvm::MCD::fieldFromInstruction(), LLVM_DEBUG, and llvm::MCDisassembler::Success.

decodeCField()

static unsigned decodeCField ( unsigned  Insn )

static

Definition at line 158 of file ARCDisassembler.cpp.

References llvm::MCD::fieldFromInstruction().

Referenced by DecodeLdRLImmInstruction(), and DecodeStLImmInstruction().

DecodeFromCyclicRange()

template<unsigned B>

static DecodeStatus DecodeFromCyclicRange ( MCInst &  Inst, unsigned  InsnS, uint64_t  Address = 0, const MCDisassembler *  Decoder = nullptr  )

static

Definition at line 220 of file ARCDisassembler.cpp.

References llvm::MCInst::addOperand(), B, llvm::MCOperand::createImm(), llvm::max(), and llvm::MCDisassembler::Success.

DecodeGBR32ShortRegister()

static DecodeStatus DecodeGBR32ShortRegister ( MCInst &  Inst, unsigned  RegNo, uint64_t  Address, const MCDisassembler *  Decoder  )

static

Definition at line 146 of file ARCDisassembler.cpp.

References Address, and DecodeGPR32RegisterClass().

DecodeGPR32RegisterClass()

static DecodeStatus DecodeGPR32RegisterClass ( MCInst &  Inst, unsigned  RegNo, uint64_t  Address, const MCDisassembler *  Decoder  )

static

Definition at line 133 of file ARCDisassembler.cpp.

References llvm::MCInst::addOperand(), llvm::MCOperand::createReg(), llvm::dbgs(), llvm::MCDisassembler::Fail, GPR32DecoderTable, LLVM_DEBUG, and llvm::MCDisassembler::Success.

Referenced by DecodeCCRU6Instruction(), DecodeGBR32ShortRegister(), DecodeLdLImmInstruction(), DecodeLdRLImmInstruction(), DecodeMEMrs9(), DecodeMoveHRegInstruction(), DecodeSOPwithRS12(), DecodeSOPwithRU6(), and DecodeStLImmInstruction().

DecodeLdLImmInstruction()

static DecodeStatus DecodeLdLImmInstruction ( MCInst &  Inst, uint64_t  Insn, uint64_t  Address, const MCDisassembler *  Decoder  )

static

Definition at line 248 of file ARCDisassembler.cpp.

References llvm::MCInst::addOperand(), Address, llvm::MCOperand::createImm(), llvm::dbgs(), decodeAField(), decodeBField(), DecodeGPR32RegisterClass(), llvm::MCDisassembler::Fail, LLVM_DEBUG, and llvm::MCDisassembler::Success.

DecodeLdRLImmInstruction()

static DecodeStatus DecodeLdRLImmInstruction ( MCInst &  Inst, uint64_t  Insn, uint64_t  Address, const MCDisassembler *  Decoder  )

static

Definition at line 266 of file ARCDisassembler.cpp.

References llvm::MCInst::addOperand(), Address, llvm::MCOperand::createImm(), llvm::dbgs(), decodeAField(), decodeBField(), decodeCField(), DecodeGPR32RegisterClass(), llvm::MCDisassembler::Fail, LLVM_DEBUG, and llvm::MCDisassembler::Success.

DecodeMEMrs9()

static DecodeStatus DecodeMEMrs9 ( MCInst &  Inst, unsigned  Insn, uint64_t  Address, const MCDisassembler *  Dec  )

static

Definition at line 171 of file ARCDisassembler.cpp.

References llvm::MCInst::addOperand(), Address, llvm::MCOperand::createImm(), DecodeGPR32RegisterClass(), and llvm::MCDisassembler::Success.

DecodeMoveHRegInstruction()

static DecodeStatus DecodeMoveHRegInstruction ( MCInst &  Inst, uint64_t  Insn, uint64_t  Address, const MCDisassembler *  Decoder  )

static

Definition at line 283 of file ARCDisassembler.cpp.

References llvm::MCInst::addOperand(), Address, llvm::MCOperand::createImm(), llvm::dbgs(), DecodeGPR32RegisterClass(), llvm::MCDisassembler::Fail, llvm::MCD::fieldFromInstruction(), G, H, LLVM_DEBUG, and llvm::MCDisassembler::Success.

DecodeSignedOperand()

template<unsigned B>

static DecodeStatus DecodeSignedOperand ( MCInst &  Inst, unsigned  InsnS, uint64_t  Address = 0, const MCDisassembler *  Decoder = nullptr  )

static

Definition at line 209 of file ARCDisassembler.cpp.

References llvm::MCInst::addOperand(), B, llvm::MCOperand::createImm(), llvm::maskTrailingOnes(), and llvm::MCDisassembler::Success.

DecodeSOPwithRS12()

static DecodeStatus DecodeSOPwithRS12 ( MCInst &  Inst, uint64_t  Insn, uint64_t  Address, const MCDisassembler *  Decoder  )

static

Definition at line 335 of file ARCDisassembler.cpp.

References llvm::MCInst::addOperand(), Address, llvm::MCOperand::createImm(), decodeBField(), DecodeGPR32RegisterClass(), llvm::MCD::fieldFromInstruction(), llvm::Lower, llvm::MCDisassembler::Success, and llvm::Upper.

DecodeSOPwithRU6()

static DecodeStatus DecodeSOPwithRU6 ( MCInst &  Inst, uint64_t  Insn, uint64_t  Address, const MCDisassembler *  Decoder  )

static

Definition at line 324 of file ARCDisassembler.cpp.

References llvm::MCInst::addOperand(), Address, llvm::MCOperand::createImm(), decodeBField(), DecodeGPR32RegisterClass(), llvm::MCD::fieldFromInstruction(), and llvm::MCDisassembler::Success.

DecodeStLImmInstruction()

static DecodeStatus DecodeStLImmInstruction ( MCInst &  Inst, uint64_t  Insn, uint64_t  Address, const MCDisassembler *  Decoder  )

static

Definition at line 231 of file ARCDisassembler.cpp.

References llvm::MCInst::addOperand(), Address, llvm::MCOperand::createImm(), llvm::dbgs(), decodeBField(), decodeCField(), DecodeGPR32RegisterClass(), llvm::MCDisassembler::Fail, LLVM_DEBUG, and llvm::MCDisassembler::Success.

DecodeSymbolicOperand()

static bool DecodeSymbolicOperand ( MCInst &  Inst, uint64_t  Address, uint64_t  Value, const MCDisassembler *  Decoder  )

static

Definition at line 181 of file ARCDisassembler.cpp.

References Address, and llvm::MCDisassembler::tryAddingSymbolicOperand().

Referenced by DecodeSymbolicOperandOff().

DecodeSymbolicOperandOff()

static void DecodeSymbolicOperandOff ( MCInst &  Inst, uint64_t  Address, uint64_t  Offset, const MCDisassembler *  Decoder  )

static

Definition at line 189 of file ARCDisassembler.cpp.

References llvm::MCInst::addOperand(), Address, llvm::MCOperand::createImm(), DecodeSymbolicOperand(), and llvm::Offset.

Referenced by DecodeBranchTargetS().

LLVMInitializeARCDisassembler()

LLVM_EXTERNAL_VISIBILITY void LLVMInitializeARCDisassembler

(

)

Definition at line 419 of file ARCDisassembler.cpp.

References createARCDisassembler(), llvm::getTheARCTarget(), and llvm::TargetRegistry::RegisterMCDisassembler().

readInstruction16()

static bool readInstruction16 ( ArrayRef< uint8_t >  Bytes, uint64_t  Address, uint64_t &  Size, uint32_t &  Insn  )

static

Definition at line 80 of file ARCDisassembler.cpp.

References Size.

readInstruction32()

static bool readInstruction32 ( ArrayRef< uint8_t >  Bytes, uint64_t  Address, uint64_t &  Size, uint32_t &  Insn  )

static

Definition at line 52 of file ARCDisassembler.cpp.

References Size.

Referenced by llvm::LanaiDisassembler::getInstruction().

readInstruction48()

static bool readInstruction48 ( ArrayRef< uint8_t >  Bytes, uint64_t  Address, uint64_t &  Size, uint64_t &  Insn  )

static

Definition at line 71 of file ARCDisassembler.cpp.

References Size.

readInstruction64()

static bool readInstruction64 ( ArrayRef< uint8_t >  Bytes, uint64_t  Address, uint64_t &  Size, uint64_t &  Insn  )

static

Definition at line 61 of file ARCDisassembler.cpp.

References Size.

Variable Documentation

GPR32DecoderTable

const uint16_t GPR32DecoderTable[]

static

Initial value:

= {
    ARC::R0,  ARC::R1,    ARC::R2,  ARC::R3,   ARC::R4,  ARC::R5,  ARC::R6,
    ARC::R7,  ARC::R8,    ARC::R9,  ARC::R10,  ARC::R11, ARC::R12, ARC::R13,
    ARC::R14, ARC::R15,   ARC::R16, ARC::R17,  ARC::R18, ARC::R19, ARC::R20,
    ARC::R21, ARC::R22,   ARC::R23, ARC::R24,  ARC::R25, ARC::GP,  ARC::FP,
    ARC::SP,  ARC::ILINK, ARC::R30, ARC::BLINK}

Definition at line 126 of file ARCDisassembler.cpp.

Referenced by DecodeGPR32RegisterClass().