/***************************************************************************************************
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 */
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