LLVM: llvm::AArch64Disassembler Class Reference (original) (raw)

#include "[Target/AArch64/Disassembler/AArch64Disassembler.h](AArch64Disassembler%5F8h%5Fsource.html)"

Public Member Functions
AArch64Disassembler (const MCSubtargetInfo &STI, MCContext &Ctx, MCInstrInfo const *MCII)
~AArch64Disassembler () override=default
MCDisassembler::DecodeStatus getInstruction (MCInst &Instr, uint64_t &Size, ArrayRef< uint8_t > Bytes, uint64_t Address, raw_ostream &CStream) const override
Returns the disassembly of a single instruction.
uint64_t suggestBytesToSkip (ArrayRef< uint8_t > Bytes, uint64_t Address) const override
Suggest a distance to skip in a buffer of data to find the next place to look for the start of an instruction.
- Public Member Functions inherited from llvm::MCDisassembler
MCDisassembler (const MCSubtargetInfo &STI, MCContext &Ctx)
virtual ~MCDisassembler ()
virtual DecodeStatus getInstruction (MCInst &Instr, uint64_t &Size, ArrayRef< uint8_t > Bytes, uint64_t Address, raw_ostream &CStream) const =0
Returns the disassembly of a single instruction.
virtual Expected< bool > onSymbolStart (SymbolInfoTy &Symbol, uint64_t &Size, ArrayRef< uint8_t > Bytes, uint64_t Address) const
Used to perform separate target specific disassembly for a particular symbol.
virtual uint64_t suggestBytesToSkip (ArrayRef< uint8_t > Bytes, uint64_t Address) const
Suggest a distance to skip in a buffer of data to find the next place to look for the start of an instruction.
bool tryAddingSymbolicOperand (MCInst &Inst, int64_t Value, uint64_t Address, bool IsBranch, uint64_t Offset, uint64_t OpSize, uint64_t InstSize) const
void tryAddingPcLoadReferenceComment (int64_t Value, uint64_t Address) const
void setSymbolizer (std::unique_ptr< MCSymbolizer > Symzer)
Set Symzer as the current symbolizer.
MCContext & getContext () const
const MCSubtargetInfo & getSubtargetInfo () const
virtual void setABIVersion (unsigned Version)
ELF-specific, set the ABI version from the object header.
Additional Inherited Members
- Public Types inherited from llvm::MCDisassembler
enum DecodeStatus { Fail = 0 , SoftFail = 1 , Success = 3 }
Ternary decode status. More...
- Public Attributes inherited from llvm::MCDisassembler
raw_ostream * CommentStream = nullptr
- Protected Attributes inherited from llvm::MCDisassembler
const MCSubtargetInfo & STI
std::unique_ptr< MCSymbolizer > Symbolizer

Definition at line 20 of file AArch64Disassembler.h.

◆ ~AArch64Disassembler()

llvm::AArch64Disassembler::~AArch64Disassembler ( ) overridedefault

◆ getInstruction()

Returns the disassembly of a single instruction.

Parameters

Instr - An MCInst to populate with the contents of the instruction.
Size - A value to populate with the size of the instruction, or the number of bytes consumed while attempting to decode an invalid instruction.
Address - The address, in the memory space of region, of the first byte of the instruction.
Bytes - A reference to the actual bytes of the instruction.
CStream - The stream to print comments and annotations on.

Returns

- MCDisassembler::Success if the instruction is valid, MCDisassembler::SoftFail if the instruction was disassemblable but invalid, MCDisassembler::Fail if the instruction was invalid.

Implements llvm::MCDisassembler.

Definition at line 231 of file AArch64Disassembler.cpp.

References llvm::Address, assert(), llvm::MCDisassembler::CommentStream, llvm::MCOperand::createImm(), llvm::MCOperand::createReg(), llvm::MCDisassembler::Fail, Insn, llvm::MCOperand::isImm(), MI, llvm::AArch64::OPERAND_IMPLICIT_IMM_0, llvm::MCOI::OPERAND_REGISTER, llvm::ArrayRef< T >::size(), Size, and llvm::MCDisassembler::STI.

◆ suggestBytesToSkip()

Suggest a distance to skip in a buffer of data to find the next place to look for the start of an instruction.

For example, if all instructions have a fixed alignment, this might advance to the next multiple of that alignment.

If not overridden, the default is 1.

Parameters

Address - The address, in the memory space of region, of the starting point (typically the first byte of something that did not decode as a valid instruction at all).
Bytes - A reference to the actual bytes at Address. May be needed in order to determine the width of an unrecognized instruction (e.g. in Thumb this is a simple consistent criterion that doesn't require knowing the specific instruction). The caller can pass as much data as they have available, and the function is required to make a reasonable default choice if not enough data is available to make a better one.

Returns

- A number of bytes to skip. Must always be greater than zero. May be greater than the size of Bytes.

Reimplemented from llvm::MCDisassembler.

Definition at line 296 of file AArch64Disassembler.cpp.

The documentation for this class was generated from the following files: