asmjit::x86::InstDB::InstSignature Struct Reference

Instruction signature.

Contains a sequence of operands' combinations and other metadata that defines a single instruction. This data is used by instruction validator.

Public Members

Members

uint8_t _opCount : 3

uint8_t _mode : 2

uint8_t _implicitOpCount : 3

uint8_t _reserved

uint8_t _opSignatureIndexes[Globals::kMaxOpCount]

Member Functions

Accessors

Mode mode() const noexcept

bool supportsMode(Mode mode) const noexcept

uint32_t opCount() const noexcept

uint32_t implicitOpCount() const noexcept

bool hasImplicitOperands() const noexcept

const uint8_t* opSignatureIndexes() const noexcept

uint8_t opSignatureIndex(size_t index) const noexcept

const OpSignature& opSignature(size_t index) const noexcept

Member Function Documentation

Mode x86::InstDB::InstSignature::mode() constnoexcept

Returns instruction operation mode.

bool x86::InstDB::InstSignature::supportsMode(Mode mode) constnoexcept

Tests whether the instruction supports the given operating mode.

uint32_t x86::InstDB::InstSignature::opCount() constnoexcept

Returns the number of operands of this signature.

uint32_t x86::InstDB::InstSignature::implicitOpCount() constnoexcept

Returns the number of implicit operands this signature has.

bool x86::InstDB::InstSignature::hasImplicitOperands() constnoexcept

Tests whether this instruction signature has at least one implicit operand.

const uint8_t* x86::InstDB::InstSignature::opSignatureIndexes() constnoexcept

Returns indexes to _opSignatureTable for each operand of the instruction.

Note

The returned array always provides indexes for all operands (see Globals::kMaxOpCount) even if the instruction provides less operands. Undefined operands have always index of zero.

uint8_t x86::InstDB::InstSignature::opSignatureIndex(size_t index) constnoexcept

Returns index to _opSignatureTable, corresponding to the requested operand index of the instruction.

const OpSignature& x86::InstDB::InstSignature::opSignature(size_t index) constnoexcept

Returns OpSignature corresponding to the requested operand index of the instruction.

Member Data Documentation

uint8_t x86::InstDB::InstSignature::_opCount

Count of operands in opIndex (0..6).

uint8_t x86::InstDB::InstSignature::_mode

Architecture modes supported (X86 / X64).

uint8_t x86::InstDB::InstSignature::_implicitOpCount

Number of implicit operands.

uint8_t x86::InstDB::InstSignature::_reserved

Reserved for future use.

uint8_t x86::InstDB::InstSignature::_opSignatureIndexes[Globals::kMaxOpCount]

Indexes to OpSignature table.