XtensaDisassembler.cpp File Reference

#include "MCTargetDesc/XtensaMCTargetDesc.h"
#include "TargetInfo/XtensaTargetInfo.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/MCRegisterInfo.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/MC/TargetRegistry.h"
#include "llvm/Support/Endian.h"
#include "XtensaGenDisassemblerTables.inc"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "Xtensa-disassembler"

Typedefs
using	DecodeStatus = MCDisassembler::DecodeStatus

Functions
static MCDisassembler *	createXtensaDisassembler (const Target &T, const MCSubtargetInfo &STI, MCContext &Ctx)
LLVM_EXTERNAL_VISIBILITY void	LLVMInitializeXtensaDisassembler ()
static DecodeStatus	DecodeARRegisterClass (MCInst &Inst, uint64_t RegNo, uint64_t Address, const void *Decoder)
static DecodeStatus	DecodeSRRegisterClass (MCInst &Inst, uint64_t RegNo, uint64_t Address, const void *Decoder)
static bool	tryAddingSymbolicOperand (int64_t Value, bool isBranch, uint64_t Address, uint64_t Offset, uint64_t InstSize, MCInst &MI, const void *Decoder)
static DecodeStatus	decodeCallOperand (MCInst &Inst, uint64_t Imm, int64_t Address, const void *Decoder)
static DecodeStatus	decodeJumpOperand (MCInst &Inst, uint64_t Imm, int64_t Address, const void *Decoder)
static DecodeStatus	decodeBranchOperand (MCInst &Inst, uint64_t Imm, int64_t Address, const void *Decoder)
static DecodeStatus	decodeL32ROperand (MCInst &Inst, uint64_t Imm, int64_t Address, const void *Decoder)
static DecodeStatus	decodeImm8Operand (MCInst &Inst, uint64_t Imm, int64_t Address, const void *Decoder)
static DecodeStatus	decodeImm8_sh8Operand (MCInst &Inst, uint64_t Imm, int64_t Address, const void *Decoder)
static DecodeStatus	decodeImm12Operand (MCInst &Inst, uint64_t Imm, int64_t Address, const void *Decoder)
static DecodeStatus	decodeUimm4Operand (MCInst &Inst, uint64_t Imm, int64_t Address, const void *Decoder)
static DecodeStatus	decodeUimm5Operand (MCInst &Inst, uint64_t Imm, int64_t Address, const void *Decoder)
static DecodeStatus	decodeImm1_16Operand (MCInst &Inst, uint64_t Imm, int64_t Address, const void *Decoder)
static DecodeStatus	decodeShimm1_31Operand (MCInst &Inst, uint64_t Imm, int64_t Address, const void *Decoder)
static DecodeStatus	decodeB4constOperand (MCInst &Inst, uint64_t Imm, int64_t Address, const void *Decoder)
static DecodeStatus	decodeB4constuOperand (MCInst &Inst, uint64_t Imm, int64_t Address, const void *Decoder)
static DecodeStatus	decodeMem8Operand (MCInst &Inst, uint64_t Imm, int64_t Address, const void *Decoder)
static DecodeStatus	decodeMem16Operand (MCInst &Inst, uint64_t Imm, int64_t Address, const void *Decoder)
static DecodeStatus	decodeMem32Operand (MCInst &Inst, uint64_t Imm, int64_t Address, const void *Decoder)
static DecodeStatus	readInstruction24 (ArrayRef< uint8_t > Bytes, uint64_t Address, uint64_t &Size, uint32_t &Insn, bool IsLittleEndian)
	Read three bytes from the ArrayRef and return 24 bit data.

Variables
static const unsigned	ARDecoderTable []
static const unsigned	SRDecoderTable [] = {Xtensa::SAR, 3}
static int64_t	TableB4const [16]
static int64_t	TableB4constu [16]

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "Xtensa-disassembler"

Definition at line 28 of file XtensaDisassembler.cpp.

Typedef Documentation

DecodeStatus

using DecodeStatus = MCDisassembler::DecodeStatus

Definition at line 30 of file XtensaDisassembler.cpp.

Function Documentation

createXtensaDisassembler()

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

static

Definition at line 51 of file XtensaDisassembler.cpp.

Referenced by LLVMInitializeXtensaDisassembler().

DecodeARRegisterClass()

static DecodeStatus DecodeARRegisterClass ( MCInst &  Inst, uint64_t  RegNo, uint64_t  Address, const void *  Decoder  )

static

Definition at line 67 of file XtensaDisassembler.cpp.

References llvm::MCInst::addOperand(), ARDecoderTable, llvm::MCOperand::createReg(), llvm::MCDisassembler::Fail, and llvm::MCDisassembler::Success.

Referenced by decodeMem16Operand(), decodeMem32Operand(), and decodeMem8Operand().

decodeB4constOperand()

static DecodeStatus decodeB4constOperand ( MCInst &  Inst, uint64_t  Imm, int64_t  Address, const void *  Decoder  )

static

Definition at line 203 of file XtensaDisassembler.cpp.

References llvm::MCInst::addOperand(), assert(), llvm::MCOperand::createImm(), llvm::MCDisassembler::Success, and TableB4const.

decodeB4constuOperand()

static DecodeStatus decodeB4constuOperand ( MCInst &  Inst, uint64_t  Imm, int64_t  Address, const void *  Decoder  )

static

Definition at line 213 of file XtensaDisassembler.cpp.

References llvm::MCInst::addOperand(), assert(), llvm::MCOperand::createImm(), llvm::MCDisassembler::Success, and TableB4constu.

decodeBranchOperand()

static DecodeStatus decodeBranchOperand ( MCInst &  Inst, uint64_t  Imm, int64_t  Address, const void *  Decoder  )

static

Definition at line 120 of file XtensaDisassembler.cpp.

References llvm::MCInst::addOperand(), assert(), llvm::MCOperand::createImm(), llvm::MCInst::getOpcode(), llvm::MCDisassembler::Success, and tryAddingSymbolicOperand().

decodeCallOperand()

static DecodeStatus decodeCallOperand ( MCInst &  Inst, uint64_t  Imm, int64_t  Address, const void *  Decoder  )

static

Definition at line 106 of file XtensaDisassembler.cpp.

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

decodeImm12Operand()

static DecodeStatus decodeImm12Operand ( MCInst &  Inst, uint64_t  Imm, int64_t  Address, const void *  Decoder  )

static

Definition at line 165 of file XtensaDisassembler.cpp.

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

decodeImm1_16Operand()

static DecodeStatus decodeImm1_16Operand ( MCInst &  Inst, uint64_t  Imm, int64_t  Address, const void *  Decoder  )

static

Definition at line 186 of file XtensaDisassembler.cpp.

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

decodeImm8_sh8Operand()

static DecodeStatus decodeImm8_sh8Operand ( MCInst &  Inst, uint64_t  Imm, int64_t  Address, const void *  Decoder  )

static

Definition at line 157 of file XtensaDisassembler.cpp.

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

decodeImm8Operand()

static DecodeStatus decodeImm8Operand ( MCInst &  Inst, uint64_t  Imm, int64_t  Address, const void *  Decoder  )

static

Definition at line 150 of file XtensaDisassembler.cpp.

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

decodeJumpOperand()

static DecodeStatus decodeJumpOperand ( MCInst &  Inst, uint64_t  Imm, int64_t  Address, const void *  Decoder  )

static

Definition at line 113 of file XtensaDisassembler.cpp.

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

decodeL32ROperand()

static DecodeStatus decodeL32ROperand ( MCInst &  Inst, uint64_t  Imm, int64_t  Address, const void *  Decoder  )

static

Definition at line 141 of file XtensaDisassembler.cpp.

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

decodeMem16Operand()

static DecodeStatus decodeMem16Operand ( MCInst &  Inst, uint64_t  Imm, int64_t  Address, const void *  Decoder  )

static

Definition at line 230 of file XtensaDisassembler.cpp.

References llvm::MCInst::addOperand(), assert(), llvm::MCOperand::createImm(), DecodeARRegisterClass(), and llvm::MCDisassembler::Success.

decodeMem32Operand()

static DecodeStatus decodeMem32Operand ( MCInst &  Inst, uint64_t  Imm, int64_t  Address, const void *  Decoder  )

static

Definition at line 238 of file XtensaDisassembler.cpp.

References llvm::MCInst::addOperand(), assert(), llvm::MCOperand::createImm(), DecodeARRegisterClass(), and llvm::MCDisassembler::Success.

decodeMem8Operand()

static DecodeStatus decodeMem8Operand ( MCInst &  Inst, uint64_t  Imm, int64_t  Address, const void *  Decoder  )

static

Definition at line 222 of file XtensaDisassembler.cpp.

References llvm::MCInst::addOperand(), assert(), llvm::MCOperand::createImm(), DecodeARRegisterClass(), and llvm::MCDisassembler::Success.

decodeShimm1_31Operand()

static DecodeStatus decodeShimm1_31Operand ( MCInst &  Inst, uint64_t  Imm, int64_t  Address, const void *  Decoder  )

static

Definition at line 193 of file XtensaDisassembler.cpp.

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

DecodeSRRegisterClass()

static DecodeStatus DecodeSRRegisterClass ( MCInst &  Inst, uint64_t  RegNo, uint64_t  Address, const void *  Decoder  )

static

Definition at line 80 of file XtensaDisassembler.cpp.

References llvm::MCInst::addOperand(), llvm::MCOperand::createReg(), llvm::MCDisassembler::Fail, SRDecoderTable, and llvm::MCDisassembler::Success.

decodeUimm4Operand()

static DecodeStatus decodeUimm4Operand ( MCInst &  Inst, uint64_t  Imm, int64_t  Address, const void *  Decoder  )

static

Definition at line 172 of file XtensaDisassembler.cpp.

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

decodeUimm5Operand()

static DecodeStatus decodeUimm5Operand ( MCInst &  Inst, uint64_t  Imm, int64_t  Address, const void *  Decoder  )

static

Definition at line 179 of file XtensaDisassembler.cpp.

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

LLVMInitializeXtensaDisassembler()

LLVM_EXTERNAL_VISIBILITY void LLVMInitializeXtensaDisassembler

(

)

Definition at line 57 of file XtensaDisassembler.cpp.

References createXtensaDisassembler(), llvm::getTheXtensaTarget(), and llvm::TargetRegistry::RegisterMCDisassembler().

readInstruction24()

static DecodeStatus readInstruction24 ( ArrayRef< uint8_t >  Bytes, uint64_t  Address, uint64_t &  Size, uint32_t &  Insn, bool  IsLittleEndian  )

static

Read three bytes from the ArrayRef and return 24 bit data.

Definition at line 247 of file XtensaDisassembler.cpp.

References llvm::MCDisassembler::Fail, Insn, llvm::report_fatal_error(), llvm::ArrayRef< T >::size(), Size, and llvm::MCDisassembler::Success.

tryAddingSymbolicOperand()

static bool tryAddingSymbolicOperand ( int64_t  Value, bool  isBranch, uint64_t  Address, uint64_t  Offset, uint64_t  InstSize, MCInst &  MI, const void *  Decoder  )

static

Definition at line 97 of file XtensaDisassembler.cpp.

References isBranch(), MI, llvm::Offset, and llvm::MCDisassembler::tryAddingSymbolicOperand().

Referenced by decodeBranchOperand().

Variable Documentation

ARDecoderTable

const unsigned ARDecoderTable[]

static

Initial value:

= {
    Xtensa::A0,  Xtensa::SP,  Xtensa::A2,  Xtensa::A3, Xtensa::A4,  Xtensa::A5,
    Xtensa::A6,  Xtensa::A7,  Xtensa::A8,  Xtensa::A9, Xtensa::A10, Xtensa::A11,
    Xtensa::A12, Xtensa::A13, Xtensa::A14, Xtensa::A15}

Definition at line 62 of file XtensaDisassembler.cpp.

Referenced by DecodeARRegisterClass().

SRDecoderTable

const unsigned SRDecoderTable[] = {Xtensa::SAR, 3}

static

Definition at line 78 of file XtensaDisassembler.cpp.

Referenced by DecodeSRRegisterClass().

TableB4const

int64_t TableB4const[16]

static

Initial value:

= {-1, 1,  2,  3,  4,  5,  6,   7,
                                   8,  10, 12, 16, 32, 64, 128, 256}

Definition at line 201 of file XtensaDisassembler.cpp.

Referenced by decodeB4constOperand().

TableB4constu

int64_t TableB4constu[16]

static

Initial value:

= {32768, 65536, 2,  3,  4,  5,  6,   7,
                                    8,     10,    12, 16, 32, 64, 128, 256}

Definition at line 211 of file XtensaDisassembler.cpp.

Referenced by decodeB4constuOperand().