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zydis/Zydis/ZydisTypes.hpp

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/***************************************************************************************************
Zyan Disassembler Engine
Version 1.0
Remarks : Freeware, Copyright must be included
Original Author : Florian Bernd
Modifications : Joel Höner
* 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.
***************************************************************************************************/
#ifndef _ZYDIS_TYPES_HPP_
#define _ZYDIS_TYPES_HPP_
#include <stdint.h>
#include "ZydisOpcodeTable.hpp"
namespace Zydis
{
/* InstructionFlags ============================================================================= */
/**
* @brief Values that represent additional flags of a decoded instruction.
*/
enum InstructionFlags : uint32_t
{
IF_NONE = 0x00000000,
/**
* @brief The instruction was decoded in 16 bit disassembler mode.
*/
IF_DISASSEMBLER_MODE_16 = 0x00000001,
/**
* @brief The instruction was decoded in 32 bit disassembler mode.
*/
IF_DISASSEMBLER_MODE_32 = 0x00000002,
/**
* @brief The instruction was decoded in 64 bit disassembler mode.
*/
IF_DISASSEMBLER_MODE_64 = 0x00000004,
/**
* @brief The instruction has a segment prefix (0x26, 0x2E, 0x36, 0x3E, 0x64, 0x65).
*/
IF_PREFIX_SEGMENT = 0x00000008,
/**
* @brief The instruction has a lock prefix (0xF0).
*/
IF_PREFIX_LOCK = 0x00000010,
/**
* @brief The instruction has a repne prefix (0xF2).
*/
IF_PREFIX_REPNE = 0x00000020,
/**
* @brief The instruction has a rep prefix (0xF3).
*/
IF_PREFIX_REP = 0x00000040,
/**
* @brief The instruction has an operand size prefix (0x66).
*/
IF_PREFIX_OPERAND_SIZE = 0x00000080,
/**
* @brief The instruction has an address size prefix (0x67).
*/
IF_PREFIX_ADDRESS_SIZE = 0x00000100,
/**
* @brief The instruction has a rex prefix (0x40 - 0x4F).
*/
IF_PREFIX_REX = 0x00000200,
/**
* @brief The instruction has a vex prefix (0xC4 or 0xC5).
*/
IF_PREFIX_VEX = 0x00000400,
/**
* @brief The instruction has a modrm byte.
*/
IF_MODRM = 0x00000800,
/**
* @brief The instruction has a sib byte.
*/
IF_SIB = 0x00001000,
/**
* @brief The instruction has an operand with a relative address.
*/
IF_RELATIVE = 0x00002000,
/**
* @brief An error occured while decoding the instruction.
*/
IF_ERROR_MASK = 0xFFF00000,
/**
* @brief End of input reached while decoding the instruction.
*/
IF_ERROR_END_OF_INPUT = 0x00100000,
/**
* @brief The instruction length has exceeded the maximum of 15 bytes.
*/
IF_ERROR_LENGTH = 0x00200000,
/**
* @brief The instruction is invalid.
*/
IF_ERROR_INVALID = 0x00400000,
/**
* @brief The instruction is invalid in 64 bit mode.
*/
IF_ERROR_INVALID_64 = 0x00800000,
/**
* @brief An error occured while decoding the instruction operands.
*/
IF_ERROR_OPERAND = 0x01000000
};
/* Register ===================================================================================== */
/**
* @brief Values that represent a cpu register.
*/
enum class Register : uint16_t
{
NONE,
/* 8 bit general purpose registers */
AL, CL, DL, BL,
AH, CH, DH, BH,
SPL, BPL, SIL, DIL,
R8B, R9B, R10B, R11B,
R12B, R13B, R14B, R15B,
/* 16 bit general purpose registers */
AX, CX, DX, BX,
SP, BP, SI, DI,
R8W, R9W, R10W, R11W,
R12W, R13W, R14W, R15W,
/* 32 bit general purpose registers */
EAX, ECX, EDX, EBX,
ESP, EBP, ESI, EDI,
R8D, R9D, R10D, R11D,
R12D, R13D, R14D, R15D,
/* 64 bit general purpose registers */
RAX, RCX, RDX, RBX,
RSP, RBP, RSI, RDI,
R8, R9, R10, R11,
R12, R13, R14, R15,
/* segment registers */
ES, CS, SS,
DS, FS, GS,
/* control registers */
CR0, CR1, CR2, CR3,
CR4, CR5, CR6, CR7,
CR8, CR9, CR10, CR11,
CR12, CR13, CR14, CR15,
/* debug registers */
DR0, DR1, DR2, DR3,
DR4, DR5, DR6, DR7,
DR8, DR9, DR10, DR11,
DR12, DR13, DR14, DR15,
/* mmx registers */
MM0, MM1, MM2, MM3,
MM4, MM5, MM6, MM7,
/* x87 registers */
ST0, ST1, ST2, ST3,
ST4, ST5, ST6, ST7,
/* extended multimedia registers */
XMM0, XMM1, XMM2, XMM3,
XMM4, XMM5, XMM6, XMM7,
XMM8, XMM9, XMM10, XMM11,
XMM12, XMM13, XMM14, XMM15,
/* 256 bit multimedia registers */
YMM0, YMM1, YMM2, YMM3,
YMM4, YMM5, YMM6, YMM7,
YMM8, YMM9, YMM10, YMM11,
YMM12, YMM13, YMM14, YMM15,
/* instruction pointer register */
RIP
};
/* OperandType ================================================================================== */
/**
* @brief Values that represent the type of a decoded operand.
*/
enum class OperandType : uint8_t
{
/**
* @brief The operand is not used.
*/
NONE,
/**
* @brief The operand is a register operand.
*/
REGISTER,
/**
* @brief The operand is a memory operand.
*/
MEMORY,
/**
* @brief The operand is a pointer operand.
*/
POINTER,
/**
* @brief The operand is an immediate operand.
*/
IMMEDIATE,
/**
* @brief The operand is a relative immediate operand.
*/
REL_IMMEDIATE,
/**
* @brief The operand is a constant value.
*/
CONSTANT
};
/* ZydisOperandAccessMode ============================================================================ */
/**
* @brief Values that represent the operand access mode.
*/
enum class OperandAccessMode : uint8_t
{
NA,
/**
* @brief The operand is accessed in read-only mode.
*/
READ,
/**
* @brief The operand is accessed in write mode.
*/
WRITE,
/**
* @brief The operand is accessed in read-write mode.
*/
READWRITE
};
/* OperandInfo ================================================================================== */
/**
* @brief This struct holds information about a decoded operand.
*/
struct OperandInfo
{
/**
* @brief The type of the operand.
*/
OperandType type;
/**
* @brief The size of the operand.
*/
uint16_t size;
/**
* @brief The operand access mode.
*/
OperandAccessMode access_mode;
/**
* @brief The base register.
*/
Register base;
/**
* @brief The index register.
*/
Register index;
/**
* @brief The scale factor.
*/
uint8_t scale;
/**
* @brief The lvalue offset. If the @c offset is zero and the operand @c type is not
* @c CONSTANT, no lvalue is present.
*/
uint8_t offset;
/**
* @brief Signals, if the lval is signed.
*/
bool signed_lval;
/**
* @brief The lvalue.
*/
union {
int8_t sbyte;
uint8_t ubyte;
int16_t sword;
uint16_t uword;
int32_t sdword;
uint32_t udword;
int64_t sqword;
uint64_t uqword;
struct {
uint16_t seg;
uint32_t off;
} ptr;
} lval;
};
/* InstructionInfo ============================================================================== */
/**
* @brief This struct holds information about a decoded instruction.
*/
struct InstructionInfo
{
/**
* @brief The instruction flags.
*/
uint32_t flags;
/**
* @brief The instruction mnemonic.
*/
InstructionMnemonic mnemonic;
/**
* @brief The total length of the instruction.
*/
uint8_t length;
/**
* @brief Contains all bytes of the instruction.
*/
uint8_t data[15];
/**
* @brief The length of the instruction opcodes.
*/
uint8_t opcode_length;
/**
* @brief The instruction opcodes.
*/
uint8_t opcode[3];
/**
* @brief The operand mode.
*/
uint8_t operand_mode;
/**
* @brief The address mode.
*/
uint8_t address_mode;
/**
* @brief The decoded operands.
*/
OperandInfo operand[4];
/**
* @brief The segment register. This value will default to @c NONE, if no segment register
* prefix is present.
*/
Register segment;
/**
* @brief The rex prefix byte.
*/
uint8_t rex;
/**
* @brief When 1, a 64-bit operand size is used. Otherwise, when 0, the default operand size
* is used.
*/
uint8_t rex_w;
/**
* @brief This 1-bit value is an extension to the MODRM.reg field.
*/
uint8_t rex_r;
/**
* @brief This 1-bit value is an extension to the SIB.index field.
*/
uint8_t rex_x;
/**
* @brief This 1-bit value is an extension to the MODRM.rm field or the SIB.base field.
*/
uint8_t rex_b;
/**
* @brief The modrm byte.
*/
uint8_t modrm;
/**
* @brief The modrm modus bits. When this field is b11, then register-direct addressing mode
* is used; otherwise register-indirect addressing mode is used.
*/
uint8_t modrm_mod;
/**
* @brief The modrm register bits. The REX.R, VEX.~R or XOP.~R field can extend this field
* with 1 most-significant bit to 4 bits total.
*/
uint8_t modrm_reg;
/**
* @brief The extended modrm register bits. If the instruction definition does not have the
* @c IDF_ACCEPTS_REXR flag set, this value defaults to the normal @c modrm_reg
* field.
*/
uint8_t modrm_reg_ext;
/**
* @brief The modrm register/memory bits. Specifies a direct or indirect register operand,
* optionally with a displacement. The REX.B, VEX.~B or XOP.~B field can extend this
* field with 1 most-significant bit to 4 bits total.
*/
uint8_t modrm_rm;
/**
* @brief The extended modrm register/memory bits. If the instruction definition does not
* have the @c IDF_ACCEPTS_REXB flag set, this value defaults to the normal
* @c modrm_rm field.
*/
uint8_t modrm_rm_ext;
/**
* @brief The sib byte.
*/
uint8_t sib;
/**
* @brief This field indicates the scaling factor of SIB.index.
*/
uint8_t sib_scale;
/**
* @brief The index register to use. The REX.X, VEX.~X or XOP.~X field can extend this field
* with 1 most-significant bit to 4 bits total.
*/
uint8_t sib_index;
/**
* @brief The extended index register. If the instruction definition does not have the
* @c IDF_ACCEPTS_REXX flag set, this value defaults to the normal @c sib_index
* field.
*/
uint8_t sib_index_ext;
/**
* @brief The base register to use. The REX.B, VEX.~B or XOP.~B field can extend this field
* with 1 most-significant bit to 4 bits total.
*/
uint8_t sib_base;
/**
* @brief The extended base register. If the instruction definition does not have the
* @c IDF_ACCEPTS_REXB flag set, this value defaults to the normal @c sib_index
* field.
*/
uint8_t sib_base_ext;
/**
* @brief The primary vex prefix byte.
*/
uint8_t vex_op;
/**
* @brief The second vex prefix byte.
*/
uint8_t vex_b1;
/**
* @brief The third vex prefix byte.
*/
uint8_t vex_b2;
/**
* @brief This 1-bit value is an 'inverted' extension to the MODRM.reg field. The inverse of
* REX.R.
*/
uint8_t vex_r;
/**
* @brief This 1-bit value is an 'inverted' extension to the SIB.index field. The inverse of
* REX.X.
*/
uint8_t vex_x;
/**
* @brief This 1-bit value is an 'inverted' extension to the MODRM.rm field or the SIB.base
* field. The inverse of REX.B.
*/
uint8_t vex_b;
/**
* @brief Specifies the opcode map to use.
* 00 = 0x0F
* 01 = 0x0F 0x38
* 02 = 0x0F 0x3A
*/
uint8_t vex_m_mmmm;
/**
* @brief For integer instructions: when 1, a 64-bit operand size is used; otherwise,
* when 0, the default operand size is used (equivalent with REX.W). For non-integer
* instructions, this bit is a general opcode extension bit.
*/
uint8_t vex_w;
/**
* @brief An additional operand for the instruction. The value of the XMM or YMM register
* is 'inverted'.
*/
uint8_t vex_vvvv;
/**
* @brief When 0, a 128-bit vector lengh is used. Otherwise, when 1, a 256-bit vector length
* is used.
*/
uint8_t vex_l;
/**
* @brief Specifies an implied mandatory prefix for the opcode.
* 00 = none
* 01 = 0x66
* 10 = 0xF3
* 11 = 0xF2
*/
uint8_t vex_pp;
/**
* @brief The effectively used REX/VEX.w value. If the instruction definition does not have
* the @c IDF_ACCEPTS_REXW flag set, this value defaults to zero.
*/
uint8_t eff_rexvex_w;
/**
* @brief The effectively used REX/VEX.r value. If the instruction definition does not have
* the @c IDF_ACCEPTS_REXR flag set, this value defaults to zero.
*/
uint8_t eff_rexvex_r;
/**
* @brief The effectively used REX/VEX.x value. If the instruction definition does not have
* the @c IDF_ACCEPTS_REXX flag set, this value defaults to zero.
*/
uint8_t eff_rexvex_x;
/**
* @brief The effectively used REX/VEX.b value. If the instruction definition does not have
* the @c IDF_ACCEPTS_REXB flag set, this value defaults to zero.
*/
uint8_t eff_rexvex_b;
/**
* @brief The effectively used VEX.l value. If the instruction definition does not have
* the @c IDF_ACCEPTS_VEXL flag set, this value defaults to zero.
*/
uint8_t eff_vex_l;
/**
* @brief The instruction definition.
*/
const InstructionDefinition* instrDefinition;
/**
* @brief The instruction address points to the current instruction (relative to the
* initial instruction pointer).
*/
uint64_t instrAddress;
/**
* @brief The instruction pointer points to the address of the next instruction (relative
* to the initial instruction pointer).
* This field is used to properly format relative instructions.
*/
uint64_t instrPointer;
};
}
#endif /* _ZYDIS_TYPES_HPP_ */
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