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/***************************************************************************************************
Zyan Disassembler Library (Zydis)
Original Author : Florian Bernd
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
***************************************************************************************************/
/**
* @file
* Functions and types providing encoding information about individual instruction bytes.
*/
#ifndef ZYDIS_SEGMENT_H
#define ZYDIS_SEGMENT_H
#include "zydis/Zycore/Defines.h"
#include "zydis/Zydis/DecoderTypes.h"
#include "zydis/Zydis/Status.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @addtogroup segment Segment
* Functions and types providing encoding information about individual instruction bytes.
* @{
*/
/* ============================================================================================== */
/* Macros */
/* ============================================================================================== */
/* ---------------------------------------------------------------------------------------------- */
/* Constants */
/* ---------------------------------------------------------------------------------------------- */
#define ZYDIS_MAX_INSTRUCTION_SEGMENT_COUNT 9
/* ---------------------------------------------------------------------------------------------- */
/* ============================================================================================== */
/* Enums and types */
/* ============================================================================================== */
/**
* Defines the `ZydisInstructionSegment` struct.
*/
typedef enum ZydisInstructionSegment_
{
ZYDIS_INSTR_SEGMENT_NONE,
/**
* The legacy prefixes (including ignored `REX` prefixes).
*/
ZYDIS_INSTR_SEGMENT_PREFIXES,
/**
* The effective `REX` prefix byte.
*/
ZYDIS_INSTR_SEGMENT_REX,
/**
* The `XOP` prefix bytes.
*/
ZYDIS_INSTR_SEGMENT_XOP,
/**
* The `VEX` prefix bytes.
*/
ZYDIS_INSTR_SEGMENT_VEX,
/**
* The `EVEX` prefix bytes.
*/
ZYDIS_INSTR_SEGMENT_EVEX,
/**
* The `MVEX` prefix bytes.
*/
ZYDIS_INSTR_SEGMENT_MVEX,
/**
* The opcode bytes.
*/
ZYDIS_INSTR_SEGMENT_OPCODE,
/**
* The `ModRM` byte.
*/
ZYDIS_INSTR_SEGMENT_MODRM,
/**
* The `SIB` byte.
*/
ZYDIS_INSTR_SEGMENT_SIB,
/**
* The displacement bytes.
*/
ZYDIS_INSTR_SEGMENT_DISPLACEMENT,
/**
* The immediate bytes.
*/
ZYDIS_INSTR_SEGMENT_IMMEDIATE,
/**
* Maximum value of this enum.
*/
ZYDIS_INSTR_SEGMENT_MAX_VALUE = ZYDIS_INSTR_SEGMENT_IMMEDIATE,
/**
* The minimum number of bits required to represent all values of this enum.
*/
ZYDIS_INSTR_SEGMENT_REQUIRED_BITS = ZYAN_BITS_TO_REPRESENT(ZYDIS_INSTR_SEGMENT_MAX_VALUE)
} ZydisInstructionSegment;
/**
* Defines the `ZydisInstructionSegments` struct.
*/
typedef struct ZydisInstructionSegments_
{
/**
* The number of logical instruction segments.
*/
ZyanU8 count;
struct
{
/**
* The type of the segment.
*/
ZydisInstructionSegment type;
/**
* The offset of the segment relative to the start of the instruction (in bytes).
*/
ZyanU8 offset;
/**
* The size of the segment, in bytes.
*/
ZyanU8 size;
} segments[ZYDIS_MAX_INSTRUCTION_SEGMENT_COUNT];
} ZydisInstructionSegments;
/* ============================================================================================== */
/* Exported functions */
/* ============================================================================================== */
/**
* Returns offsets and sizes of all logical instruction segments (e.g. `OPCODE`,
* `MODRM`, ...).
*
* @param instruction A pointer to the `ZydisDecodedInstruction` struct.
* @param segments Receives the instruction segments information.
*
* @return A zyan status code.
*/
ZYDIS_EXPORT ZyanStatus ZydisGetInstructionSegments(const ZydisDecodedInstruction* instruction,
ZydisInstructionSegments* segments);
/* ============================================================================================== */
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* ZYDIS_SEGMENT_H */