LLVM 17.0.0git
X86DisassemblerDecoderCommon.h
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1//===-- X86DisassemblerDecoderCommon.h - Disassembler decoder ---*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file is part of the X86 Disassembler.
10// It contains common definitions used by both the disassembler and the table
11// generator.
12// Documentation for the disassembler can be found in X86Disassembler.h.
13//
14//===----------------------------------------------------------------------===//
15
16#ifndef LLVM_SUPPORT_X86DISASSEMBLERDECODERCOMMON_H
17#define LLVM_SUPPORT_X86DISASSEMBLERDECODERCOMMON_H
18
19#include "llvm/Support/DataTypes.h"
20
21namespace llvm {
22namespace X86Disassembler {
23
24#define INSTRUCTIONS_SYM x86DisassemblerInstrSpecifiers
25#define CONTEXTS_SYM x86DisassemblerContexts
26#define ONEBYTE_SYM x86DisassemblerOneByteOpcodes
27#define TWOBYTE_SYM x86DisassemblerTwoByteOpcodes
28#define THREEBYTE38_SYM x86DisassemblerThreeByte38Opcodes
29#define THREEBYTE3A_SYM x86DisassemblerThreeByte3AOpcodes
30#define XOP8_MAP_SYM x86DisassemblerXOP8Opcodes
31#define XOP9_MAP_SYM x86DisassemblerXOP9Opcodes
32#define XOPA_MAP_SYM x86DisassemblerXOPAOpcodes
33#define THREEDNOW_MAP_SYM x86Disassembler3DNowOpcodes
34#define MAP5_SYM x86DisassemblerMap5Opcodes
35#define MAP6_SYM x86DisassemblerMap6Opcodes
36
37#define INSTRUCTIONS_STR "x86DisassemblerInstrSpecifiers"
38#define CONTEXTS_STR "x86DisassemblerContexts"
39#define ONEBYTE_STR "x86DisassemblerOneByteOpcodes"
40#define TWOBYTE_STR "x86DisassemblerTwoByteOpcodes"
41#define THREEBYTE38_STR "x86DisassemblerThreeByte38Opcodes"
42#define THREEBYTE3A_STR "x86DisassemblerThreeByte3AOpcodes"
43#define XOP8_MAP_STR "x86DisassemblerXOP8Opcodes"
44#define XOP9_MAP_STR "x86DisassemblerXOP9Opcodes"
45#define XOPA_MAP_STR "x86DisassemblerXOPAOpcodes"
46#define THREEDNOW_MAP_STR "x86Disassembler3DNowOpcodes"
47#define MAP5_STR "x86DisassemblerMap5Opcodes"
48#define MAP6_STR "x86DisassemblerMap6Opcodes"
49
50// Attributes of an instruction that must be known before the opcode can be
51// processed correctly. Most of these indicate the presence of particular
52// prefixes, but ATTR_64BIT is simply an attribute of the decoding context.
53enum attributeBits {
54 ATTR_NONE = 0x00,
55 ATTR_64BIT = 0x1 << 0,
56 ATTR_XS = 0x1 << 1,
57 ATTR_XD = 0x1 << 2,
58 ATTR_REXW = 0x1 << 3,
59 ATTR_OPSIZE = 0x1 << 4,
60 ATTR_ADSIZE = 0x1 << 5,
61 ATTR_VEX = 0x1 << 6,
62 ATTR_VEXL = 0x1 << 7,
63 ATTR_EVEX = 0x1 << 8,
64 ATTR_EVEXL2 = 0x1 << 9,
65 ATTR_EVEXK = 0x1 << 10,
66 ATTR_EVEXKZ = 0x1 << 11,
67 ATTR_EVEXB = 0x1 << 12,
68 ATTR_max = 0x1 << 13,
69};
70
71// Combinations of the above attributes that are relevant to instruction
72// decode. Although other combinations are possible, they can be reduced to
73// these without affecting the ultimately decoded instruction.
74
75// Class name Rank Rationale for rank assignment
76#define INSTRUCTION_CONTEXTS \
77 ENUM_ENTRY(IC, 0, "says nothing about the instruction") \
78 ENUM_ENTRY(IC_64BIT, 1, "says the instruction applies in " \
79 "64-bit mode but no more") \
80 ENUM_ENTRY(IC_OPSIZE, 3, "requires an OPSIZE prefix, so " \
81 "operands change width") \
82 ENUM_ENTRY(IC_ADSIZE, 3, "requires an ADSIZE prefix, so " \
83 "operands change width") \
84 ENUM_ENTRY(IC_OPSIZE_ADSIZE, 4, "requires ADSIZE and OPSIZE prefixes") \
85 ENUM_ENTRY(IC_XD, 2, "may say something about the opcode " \
86 "but not the operands") \
87 ENUM_ENTRY(IC_XS, 2, "may say something about the opcode " \
88 "but not the operands") \
89 ENUM_ENTRY(IC_XD_OPSIZE, 3, "requires an OPSIZE prefix, so " \
90 "operands change width") \
91 ENUM_ENTRY(IC_XS_OPSIZE, 3, "requires an OPSIZE prefix, so " \
92 "operands change width") \
93 ENUM_ENTRY(IC_XD_ADSIZE, 3, "requires an ADSIZE prefix, so " \
94 "operands change width") \
95 ENUM_ENTRY(IC_XS_ADSIZE, 3, "requires an ADSIZE prefix, so " \
96 "operands change width") \
97 ENUM_ENTRY(IC_64BIT_REXW, 5, "requires a REX.W prefix, so operands "\
98 "change width; overrides IC_OPSIZE") \
99 ENUM_ENTRY(IC_64BIT_REXW_ADSIZE, 6, "requires a REX.W prefix and 0x67 " \
100 "prefix") \
101 ENUM_ENTRY(IC_64BIT_OPSIZE, 3, "Just as meaningful as IC_OPSIZE") \
102 ENUM_ENTRY(IC_64BIT_ADSIZE, 3, "Just as meaningful as IC_ADSIZE") \
103 ENUM_ENTRY(IC_64BIT_OPSIZE_ADSIZE, 4, "Just as meaningful as IC_OPSIZE/" \
104 "IC_ADSIZE") \
105 ENUM_ENTRY(IC_64BIT_XD, 6, "XD instructions are SSE; REX.W is " \
106 "secondary") \
107 ENUM_ENTRY(IC_64BIT_XS, 6, "Just as meaningful as IC_64BIT_XD") \
108 ENUM_ENTRY(IC_64BIT_XD_OPSIZE, 3, "Just as meaningful as IC_XD_OPSIZE") \
109 ENUM_ENTRY(IC_64BIT_XS_OPSIZE, 3, "Just as meaningful as IC_XS_OPSIZE") \
110 ENUM_ENTRY(IC_64BIT_XD_ADSIZE, 3, "Just as meaningful as IC_XD_ADSIZE") \
111 ENUM_ENTRY(IC_64BIT_XS_ADSIZE, 3, "Just as meaningful as IC_XS_ADSIZE") \
112 ENUM_ENTRY(IC_64BIT_REXW_XS, 7, "OPSIZE could mean a different " \
113 "opcode") \
114 ENUM_ENTRY(IC_64BIT_REXW_XD, 7, "Just as meaningful as " \
115 "IC_64BIT_REXW_XS") \
116 ENUM_ENTRY(IC_64BIT_REXW_OPSIZE, 8, "The Dynamic Duo! Prefer over all " \
117 "else because this changes most " \
118 "operands' meaning") \
119 ENUM_ENTRY(IC_VEX, 1, "requires a VEX prefix") \
120 ENUM_ENTRY(IC_VEX_XS, 2, "requires VEX and the XS prefix") \
121 ENUM_ENTRY(IC_VEX_XD, 2, "requires VEX and the XD prefix") \
122 ENUM_ENTRY(IC_VEX_OPSIZE, 2, "requires VEX and the OpSize prefix") \
123 ENUM_ENTRY(IC_VEX_W, 3, "requires VEX and the W prefix") \
124 ENUM_ENTRY(IC_VEX_W_XS, 4, "requires VEX, W, and XS prefix") \
125 ENUM_ENTRY(IC_VEX_W_XD, 4, "requires VEX, W, and XD prefix") \
126 ENUM_ENTRY(IC_VEX_W_OPSIZE, 4, "requires VEX, W, and OpSize") \
127 ENUM_ENTRY(IC_VEX_L, 3, "requires VEX and the L prefix") \
128 ENUM_ENTRY(IC_VEX_L_XS, 4, "requires VEX and the L and XS prefix")\
129 ENUM_ENTRY(IC_VEX_L_XD, 4, "requires VEX and the L and XD prefix")\
130 ENUM_ENTRY(IC_VEX_L_OPSIZE, 4, "requires VEX, L, and OpSize") \
131 ENUM_ENTRY(IC_VEX_L_W, 4, "requires VEX, L and W") \
132 ENUM_ENTRY(IC_VEX_L_W_XS, 5, "requires VEX, L, W and XS prefix") \
133 ENUM_ENTRY(IC_VEX_L_W_XD, 5, "requires VEX, L, W and XD prefix") \
134 ENUM_ENTRY(IC_VEX_L_W_OPSIZE, 5, "requires VEX, L, W and OpSize") \
135 ENUM_ENTRY(IC_EVEX, 1, "requires an EVEX prefix") \
136 ENUM_ENTRY(IC_EVEX_XS, 2, "requires EVEX and the XS prefix") \
137 ENUM_ENTRY(IC_EVEX_XD, 2, "requires EVEX and the XD prefix") \
138 ENUM_ENTRY(IC_EVEX_OPSIZE, 2, "requires EVEX and the OpSize prefix") \
139 ENUM_ENTRY(IC_EVEX_W, 3, "requires EVEX and the W prefix") \
140 ENUM_ENTRY(IC_EVEX_W_XS, 4, "requires EVEX, W, and XS prefix") \
141 ENUM_ENTRY(IC_EVEX_W_XD, 4, "requires EVEX, W, and XD prefix") \
142 ENUM_ENTRY(IC_EVEX_W_OPSIZE, 4, "requires EVEX, W, and OpSize") \
143 ENUM_ENTRY(IC_EVEX_L, 3, "requires EVEX and the L prefix") \
144 ENUM_ENTRY(IC_EVEX_L_XS, 4, "requires EVEX and the L and XS prefix")\
145 ENUM_ENTRY(IC_EVEX_L_XD, 4, "requires EVEX and the L and XD prefix")\
146 ENUM_ENTRY(IC_EVEX_L_OPSIZE, 4, "requires EVEX, L, and OpSize") \
147 ENUM_ENTRY(IC_EVEX_L_W, 3, "requires EVEX, L and W") \
148 ENUM_ENTRY(IC_EVEX_L_W_XS, 4, "requires EVEX, L, W and XS prefix") \
149 ENUM_ENTRY(IC_EVEX_L_W_XD, 4, "requires EVEX, L, W and XD prefix") \
150 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE, 4, "requires EVEX, L, W and OpSize") \
151 ENUM_ENTRY(IC_EVEX_L2, 3, "requires EVEX and the L2 prefix") \
152 ENUM_ENTRY(IC_EVEX_L2_XS, 4, "requires EVEX and the L2 and XS prefix")\
153 ENUM_ENTRY(IC_EVEX_L2_XD, 4, "requires EVEX and the L2 and XD prefix")\
154 ENUM_ENTRY(IC_EVEX_L2_OPSIZE, 4, "requires EVEX, L2, and OpSize") \
155 ENUM_ENTRY(IC_EVEX_L2_W, 3, "requires EVEX, L2 and W") \
156 ENUM_ENTRY(IC_EVEX_L2_W_XS, 4, "requires EVEX, L2, W and XS prefix") \
157 ENUM_ENTRY(IC_EVEX_L2_W_XD, 4, "requires EVEX, L2, W and XD prefix") \
158 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE, 4, "requires EVEX, L2, W and OpSize") \
159 ENUM_ENTRY(IC_EVEX_K, 1, "requires an EVEX_K prefix") \
160 ENUM_ENTRY(IC_EVEX_XS_K, 2, "requires EVEX_K and the XS prefix") \
161 ENUM_ENTRY(IC_EVEX_XD_K, 2, "requires EVEX_K and the XD prefix") \
162 ENUM_ENTRY(IC_EVEX_OPSIZE_K, 2, "requires EVEX_K and the OpSize prefix") \
163 ENUM_ENTRY(IC_EVEX_W_K, 3, "requires EVEX_K and the W prefix") \
164 ENUM_ENTRY(IC_EVEX_W_XS_K, 4, "requires EVEX_K, W, and XS prefix") \
165 ENUM_ENTRY(IC_EVEX_W_XD_K, 4, "requires EVEX_K, W, and XD prefix") \
166 ENUM_ENTRY(IC_EVEX_W_OPSIZE_K, 4, "requires EVEX_K, W, and OpSize") \
167 ENUM_ENTRY(IC_EVEX_L_K, 3, "requires EVEX_K and the L prefix") \
168 ENUM_ENTRY(IC_EVEX_L_XS_K, 4, "requires EVEX_K and the L and XS prefix")\
169 ENUM_ENTRY(IC_EVEX_L_XD_K, 4, "requires EVEX_K and the L and XD prefix")\
170 ENUM_ENTRY(IC_EVEX_L_OPSIZE_K, 4, "requires EVEX_K, L, and OpSize") \
171 ENUM_ENTRY(IC_EVEX_L_W_K, 3, "requires EVEX_K, L and W") \
172 ENUM_ENTRY(IC_EVEX_L_W_XS_K, 4, "requires EVEX_K, L, W and XS prefix") \
173 ENUM_ENTRY(IC_EVEX_L_W_XD_K, 4, "requires EVEX_K, L, W and XD prefix") \
174 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_K, 4, "requires EVEX_K, L, W and OpSize") \
175 ENUM_ENTRY(IC_EVEX_L2_K, 3, "requires EVEX_K and the L2 prefix") \
176 ENUM_ENTRY(IC_EVEX_L2_XS_K, 4, "requires EVEX_K and the L2 and XS prefix")\
177 ENUM_ENTRY(IC_EVEX_L2_XD_K, 4, "requires EVEX_K and the L2 and XD prefix")\
178 ENUM_ENTRY(IC_EVEX_L2_OPSIZE_K, 4, "requires EVEX_K, L2, and OpSize") \
179 ENUM_ENTRY(IC_EVEX_L2_W_K, 3, "requires EVEX_K, L2 and W") \
180 ENUM_ENTRY(IC_EVEX_L2_W_XS_K, 4, "requires EVEX_K, L2, W and XS prefix") \
181 ENUM_ENTRY(IC_EVEX_L2_W_XD_K, 4, "requires EVEX_K, L2, W and XD prefix") \
182 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_K, 4, "requires EVEX_K, L2, W and OpSize") \
183 ENUM_ENTRY(IC_EVEX_B, 1, "requires an EVEX_B prefix") \
184 ENUM_ENTRY(IC_EVEX_XS_B, 2, "requires EVEX_B and the XS prefix") \
185 ENUM_ENTRY(IC_EVEX_XD_B, 2, "requires EVEX_B and the XD prefix") \
186 ENUM_ENTRY(IC_EVEX_OPSIZE_B, 2, "requires EVEX_B and the OpSize prefix") \
187 ENUM_ENTRY(IC_EVEX_W_B, 3, "requires EVEX_B and the W prefix") \
188 ENUM_ENTRY(IC_EVEX_W_XS_B, 4, "requires EVEX_B, W, and XS prefix") \
189 ENUM_ENTRY(IC_EVEX_W_XD_B, 4, "requires EVEX_B, W, and XD prefix") \
190 ENUM_ENTRY(IC_EVEX_W_OPSIZE_B, 4, "requires EVEX_B, W, and OpSize") \
191 ENUM_ENTRY(IC_EVEX_L_B, 3, "requires EVEX_B and the L prefix") \
192 ENUM_ENTRY(IC_EVEX_L_XS_B, 4, "requires EVEX_B and the L and XS prefix")\
193 ENUM_ENTRY(IC_EVEX_L_XD_B, 4, "requires EVEX_B and the L and XD prefix")\
194 ENUM_ENTRY(IC_EVEX_L_OPSIZE_B, 4, "requires EVEX_B, L, and OpSize") \
195 ENUM_ENTRY(IC_EVEX_L_W_B, 3, "requires EVEX_B, L and W") \
196 ENUM_ENTRY(IC_EVEX_L_W_XS_B, 4, "requires EVEX_B, L, W and XS prefix") \
197 ENUM_ENTRY(IC_EVEX_L_W_XD_B, 4, "requires EVEX_B, L, W and XD prefix") \
198 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_B, 4, "requires EVEX_B, L, W and OpSize") \
199 ENUM_ENTRY(IC_EVEX_L2_B, 3, "requires EVEX_B and the L2 prefix") \
200 ENUM_ENTRY(IC_EVEX_L2_XS_B, 4, "requires EVEX_B and the L2 and XS prefix")\
201 ENUM_ENTRY(IC_EVEX_L2_XD_B, 4, "requires EVEX_B and the L2 and XD prefix")\
202 ENUM_ENTRY(IC_EVEX_L2_OPSIZE_B, 4, "requires EVEX_B, L2, and OpSize") \
203 ENUM_ENTRY(IC_EVEX_L2_W_B, 3, "requires EVEX_B, L2 and W") \
204 ENUM_ENTRY(IC_EVEX_L2_W_XS_B, 4, "requires EVEX_B, L2, W and XS prefix") \
205 ENUM_ENTRY(IC_EVEX_L2_W_XD_B, 4, "requires EVEX_B, L2, W and XD prefix") \
206 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_B, 4, "requires EVEX_B, L2, W and OpSize") \
207 ENUM_ENTRY(IC_EVEX_K_B, 1, "requires EVEX_B and EVEX_K prefix") \
208 ENUM_ENTRY(IC_EVEX_XS_K_B, 2, "requires EVEX_B, EVEX_K and the XS prefix") \
209 ENUM_ENTRY(IC_EVEX_XD_K_B, 2, "requires EVEX_B, EVEX_K and the XD prefix") \
210 ENUM_ENTRY(IC_EVEX_OPSIZE_K_B, 2, "requires EVEX_B, EVEX_K and the OpSize prefix") \
211 ENUM_ENTRY(IC_EVEX_W_K_B, 3, "requires EVEX_B, EVEX_K and the W prefix") \
212 ENUM_ENTRY(IC_EVEX_W_XS_K_B, 4, "requires EVEX_B, EVEX_K, W, and XS prefix") \
213 ENUM_ENTRY(IC_EVEX_W_XD_K_B, 4, "requires EVEX_B, EVEX_K, W, and XD prefix") \
214 ENUM_ENTRY(IC_EVEX_W_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, W, and OpSize") \
215 ENUM_ENTRY(IC_EVEX_L_K_B, 3, "requires EVEX_B, EVEX_K and the L prefix") \
216 ENUM_ENTRY(IC_EVEX_L_XS_K_B, 4, "requires EVEX_B, EVEX_K and the L and XS prefix")\
217 ENUM_ENTRY(IC_EVEX_L_XD_K_B, 4, "requires EVEX_B, EVEX_K and the L and XD prefix")\
218 ENUM_ENTRY(IC_EVEX_L_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, L, and OpSize") \
219 ENUM_ENTRY(IC_EVEX_L_W_K_B, 3, "requires EVEX_B, EVEX_K, L and W") \
220 ENUM_ENTRY(IC_EVEX_L_W_XS_K_B, 4, "requires EVEX_B, EVEX_K, L, W and XS prefix") \
221 ENUM_ENTRY(IC_EVEX_L_W_XD_K_B, 4, "requires EVEX_B, EVEX_K, L, W and XD prefix") \
222 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_K_B,4, "requires EVEX_B, EVEX_K, L, W and OpSize") \
223 ENUM_ENTRY(IC_EVEX_L2_K_B, 3, "requires EVEX_B, EVEX_K and the L2 prefix") \
224 ENUM_ENTRY(IC_EVEX_L2_XS_K_B, 4, "requires EVEX_B, EVEX_K and the L2 and XS prefix")\
225 ENUM_ENTRY(IC_EVEX_L2_XD_K_B, 4, "requires EVEX_B, EVEX_K and the L2 and XD prefix")\
226 ENUM_ENTRY(IC_EVEX_L2_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, L2, and OpSize") \
227 ENUM_ENTRY(IC_EVEX_L2_W_K_B, 3, "requires EVEX_B, EVEX_K, L2 and W") \
228 ENUM_ENTRY(IC_EVEX_L2_W_XS_K_B, 4, "requires EVEX_B, EVEX_K, L2, W and XS prefix") \
229 ENUM_ENTRY(IC_EVEX_L2_W_XD_K_B, 4, "requires EVEX_B, EVEX_K, L2, W and XD prefix") \
230 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_K_B,4, "requires EVEX_B, EVEX_K, L2, W and OpSize") \
231 ENUM_ENTRY(IC_EVEX_KZ_B, 1, "requires EVEX_B and EVEX_KZ prefix") \
232 ENUM_ENTRY(IC_EVEX_XS_KZ_B, 2, "requires EVEX_B, EVEX_KZ and the XS prefix") \
233 ENUM_ENTRY(IC_EVEX_XD_KZ_B, 2, "requires EVEX_B, EVEX_KZ and the XD prefix") \
234 ENUM_ENTRY(IC_EVEX_OPSIZE_KZ_B, 2, "requires EVEX_B, EVEX_KZ and the OpSize prefix") \
235 ENUM_ENTRY(IC_EVEX_W_KZ_B, 3, "requires EVEX_B, EVEX_KZ and the W prefix") \
236 ENUM_ENTRY(IC_EVEX_W_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ, W, and XS prefix") \
237 ENUM_ENTRY(IC_EVEX_W_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ, W, and XD prefix") \
238 ENUM_ENTRY(IC_EVEX_W_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, W, and OpSize") \
239 ENUM_ENTRY(IC_EVEX_L_KZ_B, 3, "requires EVEX_B, EVEX_KZ and the L prefix") \
240 ENUM_ENTRY(IC_EVEX_L_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L and XS prefix")\
241 ENUM_ENTRY(IC_EVEX_L_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L and XD prefix")\
242 ENUM_ENTRY(IC_EVEX_L_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, and OpSize") \
243 ENUM_ENTRY(IC_EVEX_L_W_KZ_B, 3, "requires EVEX_B, EVEX_KZ, L and W") \
244 ENUM_ENTRY(IC_EVEX_L_W_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, W and XS prefix") \
245 ENUM_ENTRY(IC_EVEX_L_W_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, W and XD prefix") \
246 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, W and OpSize") \
247 ENUM_ENTRY(IC_EVEX_L2_KZ_B, 3, "requires EVEX_B, EVEX_KZ and the L2 prefix") \
248 ENUM_ENTRY(IC_EVEX_L2_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L2 and XS prefix")\
249 ENUM_ENTRY(IC_EVEX_L2_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L2 and XD prefix")\
250 ENUM_ENTRY(IC_EVEX_L2_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, and OpSize") \
251 ENUM_ENTRY(IC_EVEX_L2_W_KZ_B, 3, "requires EVEX_B, EVEX_KZ, L2 and W") \
252 ENUM_ENTRY(IC_EVEX_L2_W_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, W and XS prefix") \
253 ENUM_ENTRY(IC_EVEX_L2_W_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, W and XD prefix") \
254 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, W and OpSize") \
255 ENUM_ENTRY(IC_EVEX_KZ, 1, "requires an EVEX_KZ prefix") \
256 ENUM_ENTRY(IC_EVEX_XS_KZ, 2, "requires EVEX_KZ and the XS prefix") \
257 ENUM_ENTRY(IC_EVEX_XD_KZ, 2, "requires EVEX_KZ and the XD prefix") \
258 ENUM_ENTRY(IC_EVEX_OPSIZE_KZ, 2, "requires EVEX_KZ and the OpSize prefix") \
259 ENUM_ENTRY(IC_EVEX_W_KZ, 3, "requires EVEX_KZ and the W prefix") \
260 ENUM_ENTRY(IC_EVEX_W_XS_KZ, 4, "requires EVEX_KZ, W, and XS prefix") \
261 ENUM_ENTRY(IC_EVEX_W_XD_KZ, 4, "requires EVEX_KZ, W, and XD prefix") \
262 ENUM_ENTRY(IC_EVEX_W_OPSIZE_KZ, 4, "requires EVEX_KZ, W, and OpSize") \
263 ENUM_ENTRY(IC_EVEX_L_KZ, 3, "requires EVEX_KZ and the L prefix") \
264 ENUM_ENTRY(IC_EVEX_L_XS_KZ, 4, "requires EVEX_KZ and the L and XS prefix")\
265 ENUM_ENTRY(IC_EVEX_L_XD_KZ, 4, "requires EVEX_KZ and the L and XD prefix")\
266 ENUM_ENTRY(IC_EVEX_L_OPSIZE_KZ, 4, "requires EVEX_KZ, L, and OpSize") \
267 ENUM_ENTRY(IC_EVEX_L_W_KZ, 3, "requires EVEX_KZ, L and W") \
268 ENUM_ENTRY(IC_EVEX_L_W_XS_KZ, 4, "requires EVEX_KZ, L, W and XS prefix") \
269 ENUM_ENTRY(IC_EVEX_L_W_XD_KZ, 4, "requires EVEX_KZ, L, W and XD prefix") \
270 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_KZ, 4, "requires EVEX_KZ, L, W and OpSize") \
271 ENUM_ENTRY(IC_EVEX_L2_KZ, 3, "requires EVEX_KZ and the L2 prefix") \
272 ENUM_ENTRY(IC_EVEX_L2_XS_KZ, 4, "requires EVEX_KZ and the L2 and XS prefix")\
273 ENUM_ENTRY(IC_EVEX_L2_XD_KZ, 4, "requires EVEX_KZ and the L2 and XD prefix")\
274 ENUM_ENTRY(IC_EVEX_L2_OPSIZE_KZ, 4, "requires EVEX_KZ, L2, and OpSize") \
275 ENUM_ENTRY(IC_EVEX_L2_W_KZ, 3, "requires EVEX_KZ, L2 and W") \
276 ENUM_ENTRY(IC_EVEX_L2_W_XS_KZ, 4, "requires EVEX_KZ, L2, W and XS prefix") \
277 ENUM_ENTRY(IC_EVEX_L2_W_XD_KZ, 4, "requires EVEX_KZ, L2, W and XD prefix") \
278 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_KZ, 4, "requires EVEX_KZ, L2, W and OpSize")
279
280#define ENUM_ENTRY(n, r, d) n,
281enum InstructionContext {
282 INSTRUCTION_CONTEXTS
283 IC_max
284};
285#undef ENUM_ENTRY
286
287// Opcode types, which determine which decode table to use, both in the Intel
288// manual and also for the decoder.
289enum OpcodeType {
290 ONEBYTE = 0,
291 TWOBYTE = 1,
292 THREEBYTE_38 = 2,
293 THREEBYTE_3A = 3,
294 XOP8_MAP = 4,
295 XOP9_MAP = 5,
296 XOPA_MAP = 6,
297 THREEDNOW_MAP = 7,
298 MAP5 = 8,
299 MAP6 = 9
300};
301
302// The following structs are used for the hierarchical decode table. After
303// determining the instruction's class (i.e., which IC_* constant applies to
304// it), the decoder reads the opcode. Some instructions require specific
305// values of the ModR/M byte, so the ModR/M byte indexes into the final table.
306//
307// If a ModR/M byte is not required, "required" is left unset, and the values
308// for each instructionID are identical.
309typedef uint16_t InstrUID;
310
311// ModRMDecisionType - describes the type of ModR/M decision, allowing the
312// consumer to determine the number of entries in it.
313//
314// MODRM_ONEENTRY - No matter what the value of the ModR/M byte is, the decoded
315// instruction is the same.
316// MODRM_SPLITRM - If the ModR/M byte is between 0x00 and 0xbf, the opcode
317// corresponds to one instruction; otherwise, it corresponds to
318// a different instruction.
319// MODRM_SPLITMISC- If the ModR/M byte is between 0x00 and 0xbf, ModR/M byte
320// divided by 8 is used to select instruction; otherwise, each
321// value of the ModR/M byte could correspond to a different
322// instruction.
323// MODRM_SPLITREG - ModR/M byte divided by 8 is used to select instruction. This
324// corresponds to instructions that use reg field as opcode
325// MODRM_FULL - Potentially, each value of the ModR/M byte could correspond
326// to a different instruction.
327#define MODRMTYPES \
328 ENUM_ENTRY(MODRM_ONEENTRY) \
329 ENUM_ENTRY(MODRM_SPLITRM) \
330 ENUM_ENTRY(MODRM_SPLITMISC) \
331 ENUM_ENTRY(MODRM_SPLITREG) \
332 ENUM_ENTRY(MODRM_FULL)
333
334#define ENUM_ENTRY(n) n,
335enum ModRMDecisionType {
336 MODRMTYPES
337 MODRM_max
338};
339#undef ENUM_ENTRY
340
341#define CASE_ENCODING_RM \
342 case ENCODING_RM: \
343 case ENCODING_RM_CD2: \
344 case ENCODING_RM_CD4: \
345 case ENCODING_RM_CD8: \
346 case ENCODING_RM_CD16: \
347 case ENCODING_RM_CD32: \
348 case ENCODING_RM_CD64
349
350#define CASE_ENCODING_VSIB \
351 case ENCODING_VSIB: \
352 case ENCODING_VSIB_CD2: \
353 case ENCODING_VSIB_CD4: \
354 case ENCODING_VSIB_CD8: \
355 case ENCODING_VSIB_CD16: \
356 case ENCODING_VSIB_CD32: \
357 case ENCODING_VSIB_CD64
358
359// Physical encodings of instruction operands.
360#define ENCODINGS \
361 ENUM_ENTRY(ENCODING_NONE, "") \
362 ENUM_ENTRY(ENCODING_REG, "Register operand in ModR/M byte.") \
363 ENUM_ENTRY(ENCODING_RM, "R/M operand in ModR/M byte.") \
364 ENUM_ENTRY(ENCODING_RM_CD2, "R/M operand with CDisp scaling of 2") \
365 ENUM_ENTRY(ENCODING_RM_CD4, "R/M operand with CDisp scaling of 4") \
366 ENUM_ENTRY(ENCODING_RM_CD8, "R/M operand with CDisp scaling of 8") \
367 ENUM_ENTRY(ENCODING_RM_CD16,"R/M operand with CDisp scaling of 16") \
368 ENUM_ENTRY(ENCODING_RM_CD32,"R/M operand with CDisp scaling of 32") \
369 ENUM_ENTRY(ENCODING_RM_CD64,"R/M operand with CDisp scaling of 64") \
370 ENUM_ENTRY(ENCODING_SIB, "Force SIB operand in ModR/M byte.") \
371 ENUM_ENTRY(ENCODING_VSIB, "VSIB operand in ModR/M byte.") \
372 ENUM_ENTRY(ENCODING_VSIB_CD2, "VSIB operand with CDisp scaling of 2") \
373 ENUM_ENTRY(ENCODING_VSIB_CD4, "VSIB operand with CDisp scaling of 4") \
374 ENUM_ENTRY(ENCODING_VSIB_CD8, "VSIB operand with CDisp scaling of 8") \
375 ENUM_ENTRY(ENCODING_VSIB_CD16,"VSIB operand with CDisp scaling of 16") \
376 ENUM_ENTRY(ENCODING_VSIB_CD32,"VSIB operand with CDisp scaling of 32") \
377 ENUM_ENTRY(ENCODING_VSIB_CD64,"VSIB operand with CDisp scaling of 64") \
378 ENUM_ENTRY(ENCODING_VVVV, "Register operand in VEX.vvvv byte.") \
379 ENUM_ENTRY(ENCODING_WRITEMASK, "Register operand in EVEX.aaa byte.") \
380 ENUM_ENTRY(ENCODING_IB, "1-byte immediate") \
381 ENUM_ENTRY(ENCODING_IW, "2-byte") \
382 ENUM_ENTRY(ENCODING_ID, "4-byte") \
383 ENUM_ENTRY(ENCODING_IO, "8-byte") \
384 ENUM_ENTRY(ENCODING_RB, "(AL..DIL, R8B..R15B) Register code added to " \
385 "the opcode byte") \
386 ENUM_ENTRY(ENCODING_RW, "(AX..DI, R8W..R15W)") \
387 ENUM_ENTRY(ENCODING_RD, "(EAX..EDI, R8D..R15D)") \
388 ENUM_ENTRY(ENCODING_RO, "(RAX..RDI, R8..R15)") \
389 ENUM_ENTRY(ENCODING_FP, "Position on floating-point stack in ModR/M " \
390 "byte.") \
391 \
392 ENUM_ENTRY(ENCODING_Iv, "Immediate of operand size") \
393 ENUM_ENTRY(ENCODING_Ia, "Immediate of address size") \
394 ENUM_ENTRY(ENCODING_IRC, "Immediate for static rounding control") \
395 ENUM_ENTRY(ENCODING_Rv, "Register code of operand size added to the " \
396 "opcode byte") \
397 ENUM_ENTRY(ENCODING_CC, "Condition code encoded in opcode") \
398 ENUM_ENTRY(ENCODING_DUP, "Duplicate of another operand; ID is encoded " \
399 "in type") \
400 ENUM_ENTRY(ENCODING_SI, "Source index; encoded in OpSize/Adsize prefix") \
401 ENUM_ENTRY(ENCODING_DI, "Destination index; encoded in prefixes")
402
403#define ENUM_ENTRY(n, d) n,
404enum OperandEncoding {
405 ENCODINGS
406 ENCODING_max
407};
408#undef ENUM_ENTRY
409
410// Semantic interpretations of instruction operands.
411#define TYPES \
412 ENUM_ENTRY(TYPE_NONE, "") \
413 ENUM_ENTRY(TYPE_REL, "immediate address") \
414 ENUM_ENTRY(TYPE_R8, "1-byte register operand") \
415 ENUM_ENTRY(TYPE_R16, "2-byte") \
416 ENUM_ENTRY(TYPE_R32, "4-byte") \
417 ENUM_ENTRY(TYPE_R64, "8-byte") \
418 ENUM_ENTRY(TYPE_IMM, "immediate operand") \
419 ENUM_ENTRY(TYPE_UIMM8, "1-byte unsigned immediate operand") \
420 ENUM_ENTRY(TYPE_M, "Memory operand") \
421 ENUM_ENTRY(TYPE_MSIB, "Memory operand force sib encoding") \
422 ENUM_ENTRY(TYPE_MVSIBX, "Memory operand using XMM index") \
423 ENUM_ENTRY(TYPE_MVSIBY, "Memory operand using YMM index") \
424 ENUM_ENTRY(TYPE_MVSIBZ, "Memory operand using ZMM index") \
425 ENUM_ENTRY(TYPE_SRCIDX, "memory at source index") \
426 ENUM_ENTRY(TYPE_DSTIDX, "memory at destination index") \
427 ENUM_ENTRY(TYPE_MOFFS, "memory offset (relative to segment base)") \
428 ENUM_ENTRY(TYPE_ST, "Position on the floating-point stack") \
429 ENUM_ENTRY(TYPE_MM64, "8-byte MMX register") \
430 ENUM_ENTRY(TYPE_XMM, "16-byte") \
431 ENUM_ENTRY(TYPE_YMM, "32-byte") \
432 ENUM_ENTRY(TYPE_ZMM, "64-byte") \
433 ENUM_ENTRY(TYPE_VK, "mask register") \
434 ENUM_ENTRY(TYPE_VK_PAIR, "mask register pair") \
435 ENUM_ENTRY(TYPE_TMM, "tile") \
436 ENUM_ENTRY(TYPE_SEGMENTREG, "Segment register operand") \
437 ENUM_ENTRY(TYPE_DEBUGREG, "Debug register operand") \
438 ENUM_ENTRY(TYPE_CONTROLREG, "Control register operand") \
439 ENUM_ENTRY(TYPE_BNDR, "MPX bounds register") \
440 \
441 ENUM_ENTRY(TYPE_Rv, "Register operand of operand size") \
442 ENUM_ENTRY(TYPE_RELv, "Immediate address of operand size") \
443 ENUM_ENTRY(TYPE_DUP0, "Duplicate of operand 0") \
444 ENUM_ENTRY(TYPE_DUP1, "operand 1") \
445 ENUM_ENTRY(TYPE_DUP2, "operand 2") \
446 ENUM_ENTRY(TYPE_DUP3, "operand 3") \
447 ENUM_ENTRY(TYPE_DUP4, "operand 4") \
448
449#define ENUM_ENTRY(n, d) n,
450enum OperandType {
451 TYPES
452 TYPE_max
453};
454#undef ENUM_ENTRY
455
456/// The specification for how to extract and interpret one operand.
457struct OperandSpecifier {
458 uint8_t encoding;
459 uint8_t type;
460};
461
462static const unsigned X86_MAX_OPERANDS = 6;
463
464/// Decoding mode for the Intel disassembler. 16-bit, 32-bit, and 64-bit mode
465/// are supported, and represent real mode, IA-32e, and IA-32e in 64-bit mode,
466/// respectively.
467enum DisassemblerMode {
468 MODE_16BIT,
469 MODE_32BIT,
470 MODE_64BIT
471};
472
473} // namespace X86Disassembler
474} // namespace llvm
475
476#endif
ENCODINGS
#define ENCODINGS
Definition: X86DisassemblerDecoderCommon.h:360
INSTRUCTION_CONTEXTS
#define INSTRUCTION_CONTEXTS
Definition: X86DisassemblerDecoderCommon.h:76
MODRMTYPES
#define MODRMTYPES
Definition: X86DisassemblerDecoderCommon.h:327
uint16_t
llvm::X86Disassembler::DisassemblerMode
DisassemblerMode
Decoding mode for the Intel disassembler.
Definition: X86DisassemblerDecoderCommon.h:467
llvm::X86Disassembler::X86_MAX_OPERANDS
static const unsigned X86_MAX_OPERANDS
Definition: X86DisassemblerDecoderCommon.h:462
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
llvm::X86Disassembler::OperandSpecifier
The specification for how to extract and interpret one operand.
Definition: X86DisassemblerDecoderCommon.h:457
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