opdis_insn_t Struct Reference
[Data Model]

Instruction object. More...

#include <model.h>

Data Fields
enum opdis_insn_decode_t	status
char *	ascii
opdis_off_t	offset
opdis_vma_t	vma
opdis_off_t	size
opdis_byte_t *	bytes
opdis_off_t	num_prefixes
char *	prefixes
char *	mnemonic
enum opdis_insn_cat_t	category
enum opdis_insn_subset_t	isa
union {
enum opdis_cflow_flag_t   cflow
enum opdis_stack_flag_t   stack
enum opdis_io_flag_t   io
enum opdis_bit_flag_t   bit
}	flags
char *	comment
opdis_off_t	num_operands
opdis_off_t	alloc_operands
opdis_op_t **	operands
opdis_op_t *	target
opdis_op_t *	dest
opdis_op_t *	src
unsigned char	fixed_size
unsigned char	ascii_sz
unsigned char	mnemonic_sz

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Detailed Description

Instruction object.

A disassembled instruction. Depending on the decoder, some or all of the fields will be set. The status field specifies what information is present.

Note:

The ascii field always contains the raw libopcodes output for the instruction.

The offset field is always set to the offset of the instruction in the buffer. By default, the vma field will be set to the value in offset. The OPDIS_HANDLER callback can set vma to the load address of the instruction.

For instructions allocated by opdis_insn_alloc, num_operands and alloc_operands will be the same. For instructions allocated by opdis_insn_alloc_fixed, num_operands will contain the number of operands in the instruction, and alloc_operands will contain the number of fixed_size operands that have been allocated.

See also:

opdis_op_t

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Field Documentation

opdis_off_t opdis_insn_t::alloc_operands

Number of allocated operands

char* opdis_insn_t::ascii

String representation of insn

unsigned char opdis_insn_t::ascii_sz

Size of fixed ascii field

enum opdis_bit_flag_t opdis_insn_t::bit

Bitwise insn flags

opdis_byte_t* opdis_insn_t::bytes

Array of insn bytes

enum opdis_insn_cat_t opdis_insn_t::category

Type of insn opcode

enum opdis_cflow_flag_t opdis_insn_t::cflow

Control flow insn flags

char* opdis_insn_t::comment

Comment or hint from libopcodes

opdis_op_t* opdis_insn_t::dest

Destination operand

unsigned char opdis_insn_t::fixed_size

Is insn of a fixed size? 0 or 1

union { ... } opdis_insn_t::flags

Instruction-specific flags

enum opdis_io_flag_t opdis_insn_t::io

IO Port insn flags

enum opdis_insn_subset_t opdis_insn_t::isa

Subset of ISA for insn opcode

char* opdis_insn_t::mnemonic

ASCII mnemonic for insn opcode

unsigned char opdis_insn_t::mnemonic_sz

Size of fixed mnemonic field

opdis_off_t opdis_insn_t::num_operands

Number of operands in insn

opdis_off_t opdis_insn_t::num_prefixes

Number of prefixes in insn

opdis_off_t opdis_insn_t::offset

Offset of instruction in buffer

opdis_op_t** opdis_insn_t::operands

Array of operand objects

char* opdis_insn_t::prefixes

Array of prefix strings

opdis_off_t opdis_insn_t::size

Size (# bytes) of insn

opdis_op_t* opdis_insn_t::src

Source operand

enum opdis_stack_flag_t opdis_insn_t::stack

Stack insn flags

enum opdis_insn_decode_t opdis_insn_t::status

Result of decoding

opdis_op_t* opdis_insn_t::target

Branch target

opdis_vma_t opdis_insn_t::vma

Virtual memory address of insn

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The documentation for this struct was generated from the following file:

• opdis/model.h