blob: e70557a933572b299dd57ef76faa5dd4edb92674 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/** @file
Instruction parsing support definitions.
Copyright (C) 2020, Advanced Micro Devices, Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef __INSTRUCTION_PARSING_H__
#define __INSTRUCTION_PARSING_H__
#include <Base.h>
#include <Uefi.h>
//
// Instruction REX prefix definition
//
typedef union {
struct {
UINT8 BitB : 1;
UINT8 BitX : 1;
UINT8 BitR : 1;
UINT8 BitW : 1;
UINT8 Rex : 4;
} Bits;
UINT8 Uint8;
} INSTRUCTION_REX_PREFIX;
//
// Instruction ModRM definition
//
typedef union {
struct {
UINT8 Rm : 3;
UINT8 Reg : 3;
UINT8 Mod : 2;
} Bits;
UINT8 Uint8;
} INSTRUCTION_MODRM;
//
// Instruction SIB definition
//
typedef union {
struct {
UINT8 Base : 3;
UINT8 Index : 3;
UINT8 Scale : 2;
} Bits;
UINT8 Uint8;
} INSTRUCTION_SIB;
//
// Legacy Instruction Prefixes
//
#define OVERRIDE_SEGMENT_CS 0x2E
#define OVERRIDE_SEGMENT_DS 0x3E
#define OVERRIDE_SEGMENT_ES 0x26
#define OVERRIDE_SEGMENT_SS 0x36
#define OVERRIDE_SEGMENT_FS 0x64
#define OVERRIDE_SEGMENT_GS 0x65
#define OVERRIDE_OPERAND_SIZE 0x66
#define OVERRIDE_ADDRESS_SIZE 0x67
#define LOCK_PREFIX 0xF0
#define REPNZ_PREFIX 0xF2
#define REPZ_PREFIX 0xF3
//
// REX Prefixes
//
#define REX_PREFIX_START 0x40
#define REX_PREFIX_STOP 0x4F
#define REX_64BIT_OPERAND_SIZE_MASK 0x08
//
// Two-byte Opcode Flag
//
#define TWO_BYTE_OPCODE_ESCAPE 0x0F
#endif
|
