LLVM  6.0.0svn
X86DisassemblerDecoderCommon.h
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1 //===-- X86DisassemblerDecoderCommon.h - Disassembler decoder ---*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file is part of the X86 Disassembler.
11 // It contains common definitions used by both the disassembler and the table
12 // generator.
13 // Documentation for the disassembler can be found in X86Disassembler.h.
14 //
15 //===----------------------------------------------------------------------===//
16 
17 #ifndef LLVM_LIB_TARGET_X86_DISASSEMBLER_X86DISASSEMBLERDECODERCOMMON_H
18 #define LLVM_LIB_TARGET_X86_DISASSEMBLER_X86DISASSEMBLERDECODERCOMMON_H
19 
20 #include "llvm/Support/DataTypes.h"
21 
22 namespace llvm {
23 namespace X86Disassembler {
24 
25 #define INSTRUCTIONS_SYM x86DisassemblerInstrSpecifiers
26 #define CONTEXTS_SYM x86DisassemblerContexts
27 #define ONEBYTE_SYM x86DisassemblerOneByteOpcodes
28 #define TWOBYTE_SYM x86DisassemblerTwoByteOpcodes
29 #define THREEBYTE38_SYM x86DisassemblerThreeByte38Opcodes
30 #define THREEBYTE3A_SYM x86DisassemblerThreeByte3AOpcodes
31 #define XOP8_MAP_SYM x86DisassemblerXOP8Opcodes
32 #define XOP9_MAP_SYM x86DisassemblerXOP9Opcodes
33 #define XOPA_MAP_SYM x86DisassemblerXOPAOpcodes
34 
35 #define INSTRUCTIONS_STR "x86DisassemblerInstrSpecifiers"
36 #define CONTEXTS_STR "x86DisassemblerContexts"
37 #define ONEBYTE_STR "x86DisassemblerOneByteOpcodes"
38 #define TWOBYTE_STR "x86DisassemblerTwoByteOpcodes"
39 #define THREEBYTE38_STR "x86DisassemblerThreeByte38Opcodes"
40 #define THREEBYTE3A_STR "x86DisassemblerThreeByte3AOpcodes"
41 #define XOP8_MAP_STR "x86DisassemblerXOP8Opcodes"
42 #define XOP9_MAP_STR "x86DisassemblerXOP9Opcodes"
43 #define XOPA_MAP_STR "x86DisassemblerXOPAOpcodes"
44 
45 // Attributes of an instruction that must be known before the opcode can be
46 // processed correctly. Most of these indicate the presence of particular
47 // prefixes, but ATTR_64BIT is simply an attribute of the decoding context.
48 #define ATTRIBUTE_BITS \
49  ENUM_ENTRY(ATTR_NONE, 0x00) \
50  ENUM_ENTRY(ATTR_64BIT, (0x1 << 0)) \
51  ENUM_ENTRY(ATTR_XS, (0x1 << 1)) \
52  ENUM_ENTRY(ATTR_XD, (0x1 << 2)) \
53  ENUM_ENTRY(ATTR_REXW, (0x1 << 3)) \
54  ENUM_ENTRY(ATTR_OPSIZE, (0x1 << 4)) \
55  ENUM_ENTRY(ATTR_ADSIZE, (0x1 << 5)) \
56  ENUM_ENTRY(ATTR_VEX, (0x1 << 6)) \
57  ENUM_ENTRY(ATTR_VEXL, (0x1 << 7)) \
58  ENUM_ENTRY(ATTR_EVEX, (0x1 << 8)) \
59  ENUM_ENTRY(ATTR_EVEXL, (0x1 << 9)) \
60  ENUM_ENTRY(ATTR_EVEXL2, (0x1 << 10)) \
61  ENUM_ENTRY(ATTR_EVEXK, (0x1 << 11)) \
62  ENUM_ENTRY(ATTR_EVEXKZ, (0x1 << 12)) \
63  ENUM_ENTRY(ATTR_EVEXB, (0x1 << 13))
64 
65 #define ENUM_ENTRY(n, v) n = v,
69 };
70 #undef ENUM_ENTRY
71 
72 // Combinations of the above attributes that are relevant to instruction
73 // decode. Although other combinations are possible, they can be reduced to
74 // these without affecting the ultimately decoded instruction.
75 
76 // Class name Rank Rationale for rank assignment
77 #define INSTRUCTION_CONTEXTS \
78  ENUM_ENTRY(IC, 0, "says nothing about the instruction") \
79  ENUM_ENTRY(IC_64BIT, 1, "says the instruction applies in " \
80  "64-bit mode but no more") \
81  ENUM_ENTRY(IC_OPSIZE, 3, "requires an OPSIZE prefix, so " \
82  "operands change width") \
83  ENUM_ENTRY(IC_ADSIZE, 3, "requires an ADSIZE prefix, so " \
84  "operands change width") \
85  ENUM_ENTRY(IC_OPSIZE_ADSIZE, 4, "requires ADSIZE and OPSIZE prefixes") \
86  ENUM_ENTRY(IC_XD, 2, "may say something about the opcode " \
87  "but not the operands") \
88  ENUM_ENTRY(IC_XS, 2, "may say something about the opcode " \
89  "but not the operands") \
90  ENUM_ENTRY(IC_XD_OPSIZE, 3, "requires an OPSIZE prefix, so " \
91  "operands change width") \
92  ENUM_ENTRY(IC_XS_OPSIZE, 3, "requires an OPSIZE prefix, so " \
93  "operands change width") \
94  ENUM_ENTRY(IC_64BIT_REXW, 5, "requires a REX.W prefix, so operands "\
95  "change width; overrides IC_OPSIZE") \
96  ENUM_ENTRY(IC_64BIT_REXW_ADSIZE, 6, "requires a REX.W prefix and 0x67 " \
97  "prefix") \
98  ENUM_ENTRY(IC_64BIT_OPSIZE, 3, "Just as meaningful as IC_OPSIZE") \
99  ENUM_ENTRY(IC_64BIT_ADSIZE, 3, "Just as meaningful as IC_ADSIZE") \
100  ENUM_ENTRY(IC_64BIT_OPSIZE_ADSIZE, 4, "Just as meaningful as IC_OPSIZE/" \
101  "IC_ADSIZE") \
102  ENUM_ENTRY(IC_64BIT_XD, 6, "XD instructions are SSE; REX.W is " \
103  "secondary") \
104  ENUM_ENTRY(IC_64BIT_XS, 6, "Just as meaningful as IC_64BIT_XD") \
105  ENUM_ENTRY(IC_64BIT_XD_OPSIZE, 3, "Just as meaningful as IC_XD_OPSIZE") \
106  ENUM_ENTRY(IC_64BIT_XS_OPSIZE, 3, "Just as meaningful as IC_XS_OPSIZE") \
107  ENUM_ENTRY(IC_64BIT_REXW_XS, 7, "OPSIZE could mean a different " \
108  "opcode") \
109  ENUM_ENTRY(IC_64BIT_REXW_XD, 7, "Just as meaningful as " \
110  "IC_64BIT_REXW_XS") \
111  ENUM_ENTRY(IC_64BIT_REXW_OPSIZE, 8, "The Dynamic Duo! Prefer over all " \
112  "else because this changes most " \
113  "operands' meaning") \
114  ENUM_ENTRY(IC_VEX, 1, "requires a VEX prefix") \
115  ENUM_ENTRY(IC_VEX_XS, 2, "requires VEX and the XS prefix") \
116  ENUM_ENTRY(IC_VEX_XD, 2, "requires VEX and the XD prefix") \
117  ENUM_ENTRY(IC_VEX_OPSIZE, 2, "requires VEX and the OpSize prefix") \
118  ENUM_ENTRY(IC_VEX_W, 3, "requires VEX and the W prefix") \
119  ENUM_ENTRY(IC_VEX_W_XS, 4, "requires VEX, W, and XS prefix") \
120  ENUM_ENTRY(IC_VEX_W_XD, 4, "requires VEX, W, and XD prefix") \
121  ENUM_ENTRY(IC_VEX_W_OPSIZE, 4, "requires VEX, W, and OpSize") \
122  ENUM_ENTRY(IC_VEX_L, 3, "requires VEX and the L prefix") \
123  ENUM_ENTRY(IC_VEX_L_XS, 4, "requires VEX and the L and XS prefix")\
124  ENUM_ENTRY(IC_VEX_L_XD, 4, "requires VEX and the L and XD prefix")\
125  ENUM_ENTRY(IC_VEX_L_OPSIZE, 4, "requires VEX, L, and OpSize") \
126  ENUM_ENTRY(IC_VEX_L_W, 4, "requires VEX, L and W") \
127  ENUM_ENTRY(IC_VEX_L_W_XS, 5, "requires VEX, L, W and XS prefix") \
128  ENUM_ENTRY(IC_VEX_L_W_XD, 5, "requires VEX, L, W and XD prefix") \
129  ENUM_ENTRY(IC_VEX_L_W_OPSIZE, 5, "requires VEX, L, W and OpSize") \
130  ENUM_ENTRY(IC_EVEX, 1, "requires an EVEX prefix") \
131  ENUM_ENTRY(IC_EVEX_XS, 2, "requires EVEX and the XS prefix") \
132  ENUM_ENTRY(IC_EVEX_XD, 2, "requires EVEX and the XD prefix") \
133  ENUM_ENTRY(IC_EVEX_OPSIZE, 2, "requires EVEX and the OpSize prefix") \
134  ENUM_ENTRY(IC_EVEX_W, 3, "requires EVEX and the W prefix") \
135  ENUM_ENTRY(IC_EVEX_W_XS, 4, "requires EVEX, W, and XS prefix") \
136  ENUM_ENTRY(IC_EVEX_W_XD, 4, "requires EVEX, W, and XD prefix") \
137  ENUM_ENTRY(IC_EVEX_W_OPSIZE, 4, "requires EVEX, W, and OpSize") \
138  ENUM_ENTRY(IC_EVEX_L, 3, "requires EVEX and the L prefix") \
139  ENUM_ENTRY(IC_EVEX_L_XS, 4, "requires EVEX and the L and XS prefix")\
140  ENUM_ENTRY(IC_EVEX_L_XD, 4, "requires EVEX and the L and XD prefix")\
141  ENUM_ENTRY(IC_EVEX_L_OPSIZE, 4, "requires EVEX, L, and OpSize") \
142  ENUM_ENTRY(IC_EVEX_L_W, 3, "requires EVEX, L and W") \
143  ENUM_ENTRY(IC_EVEX_L_W_XS, 4, "requires EVEX, L, W and XS prefix") \
144  ENUM_ENTRY(IC_EVEX_L_W_XD, 4, "requires EVEX, L, W and XD prefix") \
145  ENUM_ENTRY(IC_EVEX_L_W_OPSIZE, 4, "requires EVEX, L, W and OpSize") \
146  ENUM_ENTRY(IC_EVEX_L2, 3, "requires EVEX and the L2 prefix") \
147  ENUM_ENTRY(IC_EVEX_L2_XS, 4, "requires EVEX and the L2 and XS prefix")\
148  ENUM_ENTRY(IC_EVEX_L2_XD, 4, "requires EVEX and the L2 and XD prefix")\
149  ENUM_ENTRY(IC_EVEX_L2_OPSIZE, 4, "requires EVEX, L2, and OpSize") \
150  ENUM_ENTRY(IC_EVEX_L2_W, 3, "requires EVEX, L2 and W") \
151  ENUM_ENTRY(IC_EVEX_L2_W_XS, 4, "requires EVEX, L2, W and XS prefix") \
152  ENUM_ENTRY(IC_EVEX_L2_W_XD, 4, "requires EVEX, L2, W and XD prefix") \
153  ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE, 4, "requires EVEX, L2, W and OpSize") \
154  ENUM_ENTRY(IC_EVEX_K, 1, "requires an EVEX_K prefix") \
155  ENUM_ENTRY(IC_EVEX_XS_K, 2, "requires EVEX_K and the XS prefix") \
156  ENUM_ENTRY(IC_EVEX_XD_K, 2, "requires EVEX_K and the XD prefix") \
157  ENUM_ENTRY(IC_EVEX_OPSIZE_K, 2, "requires EVEX_K and the OpSize prefix") \
158  ENUM_ENTRY(IC_EVEX_W_K, 3, "requires EVEX_K and the W prefix") \
159  ENUM_ENTRY(IC_EVEX_W_XS_K, 4, "requires EVEX_K, W, and XS prefix") \
160  ENUM_ENTRY(IC_EVEX_W_XD_K, 4, "requires EVEX_K, W, and XD prefix") \
161  ENUM_ENTRY(IC_EVEX_W_OPSIZE_K, 4, "requires EVEX_K, W, and OpSize") \
162  ENUM_ENTRY(IC_EVEX_L_K, 3, "requires EVEX_K and the L prefix") \
163  ENUM_ENTRY(IC_EVEX_L_XS_K, 4, "requires EVEX_K and the L and XS prefix")\
164  ENUM_ENTRY(IC_EVEX_L_XD_K, 4, "requires EVEX_K and the L and XD prefix")\
165  ENUM_ENTRY(IC_EVEX_L_OPSIZE_K, 4, "requires EVEX_K, L, and OpSize") \
166  ENUM_ENTRY(IC_EVEX_L_W_K, 3, "requires EVEX_K, L and W") \
167  ENUM_ENTRY(IC_EVEX_L_W_XS_K, 4, "requires EVEX_K, L, W and XS prefix") \
168  ENUM_ENTRY(IC_EVEX_L_W_XD_K, 4, "requires EVEX_K, L, W and XD prefix") \
169  ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_K, 4, "requires EVEX_K, L, W and OpSize") \
170  ENUM_ENTRY(IC_EVEX_L2_K, 3, "requires EVEX_K and the L2 prefix") \
171  ENUM_ENTRY(IC_EVEX_L2_XS_K, 4, "requires EVEX_K and the L2 and XS prefix")\
172  ENUM_ENTRY(IC_EVEX_L2_XD_K, 4, "requires EVEX_K and the L2 and XD prefix")\
173  ENUM_ENTRY(IC_EVEX_L2_OPSIZE_K, 4, "requires EVEX_K, L2, and OpSize") \
174  ENUM_ENTRY(IC_EVEX_L2_W_K, 3, "requires EVEX_K, L2 and W") \
175  ENUM_ENTRY(IC_EVEX_L2_W_XS_K, 4, "requires EVEX_K, L2, W and XS prefix") \
176  ENUM_ENTRY(IC_EVEX_L2_W_XD_K, 4, "requires EVEX_K, L2, W and XD prefix") \
177  ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_K, 4, "requires EVEX_K, L2, W and OpSize") \
178  ENUM_ENTRY(IC_EVEX_B, 1, "requires an EVEX_B prefix") \
179  ENUM_ENTRY(IC_EVEX_XS_B, 2, "requires EVEX_B and the XS prefix") \
180  ENUM_ENTRY(IC_EVEX_XD_B, 2, "requires EVEX_B and the XD prefix") \
181  ENUM_ENTRY(IC_EVEX_OPSIZE_B, 2, "requires EVEX_B and the OpSize prefix") \
182  ENUM_ENTRY(IC_EVEX_W_B, 3, "requires EVEX_B and the W prefix") \
183  ENUM_ENTRY(IC_EVEX_W_XS_B, 4, "requires EVEX_B, W, and XS prefix") \
184  ENUM_ENTRY(IC_EVEX_W_XD_B, 4, "requires EVEX_B, W, and XD prefix") \
185  ENUM_ENTRY(IC_EVEX_W_OPSIZE_B, 4, "requires EVEX_B, W, and OpSize") \
186  ENUM_ENTRY(IC_EVEX_L_B, 3, "requires EVEX_B and the L prefix") \
187  ENUM_ENTRY(IC_EVEX_L_XS_B, 4, "requires EVEX_B and the L and XS prefix")\
188  ENUM_ENTRY(IC_EVEX_L_XD_B, 4, "requires EVEX_B and the L and XD prefix")\
189  ENUM_ENTRY(IC_EVEX_L_OPSIZE_B, 4, "requires EVEX_B, L, and OpSize") \
190  ENUM_ENTRY(IC_EVEX_L_W_B, 3, "requires EVEX_B, L and W") \
191  ENUM_ENTRY(IC_EVEX_L_W_XS_B, 4, "requires EVEX_B, L, W and XS prefix") \
192  ENUM_ENTRY(IC_EVEX_L_W_XD_B, 4, "requires EVEX_B, L, W and XD prefix") \
193  ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_B, 4, "requires EVEX_B, L, W and OpSize") \
194  ENUM_ENTRY(IC_EVEX_L2_B, 3, "requires EVEX_B and the L2 prefix") \
195  ENUM_ENTRY(IC_EVEX_L2_XS_B, 4, "requires EVEX_B and the L2 and XS prefix")\
196  ENUM_ENTRY(IC_EVEX_L2_XD_B, 4, "requires EVEX_B and the L2 and XD prefix")\
197  ENUM_ENTRY(IC_EVEX_L2_OPSIZE_B, 4, "requires EVEX_B, L2, and OpSize") \
198  ENUM_ENTRY(IC_EVEX_L2_W_B, 3, "requires EVEX_B, L2 and W") \
199  ENUM_ENTRY(IC_EVEX_L2_W_XS_B, 4, "requires EVEX_B, L2, W and XS prefix") \
200  ENUM_ENTRY(IC_EVEX_L2_W_XD_B, 4, "requires EVEX_B, L2, W and XD prefix") \
201  ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_B, 4, "requires EVEX_B, L2, W and OpSize") \
202  ENUM_ENTRY(IC_EVEX_K_B, 1, "requires EVEX_B and EVEX_K prefix") \
203  ENUM_ENTRY(IC_EVEX_XS_K_B, 2, "requires EVEX_B, EVEX_K and the XS prefix") \
204  ENUM_ENTRY(IC_EVEX_XD_K_B, 2, "requires EVEX_B, EVEX_K and the XD prefix") \
205  ENUM_ENTRY(IC_EVEX_OPSIZE_K_B, 2, "requires EVEX_B, EVEX_K and the OpSize prefix") \
206  ENUM_ENTRY(IC_EVEX_W_K_B, 3, "requires EVEX_B, EVEX_K and the W prefix") \
207  ENUM_ENTRY(IC_EVEX_W_XS_K_B, 4, "requires EVEX_B, EVEX_K, W, and XS prefix") \
208  ENUM_ENTRY(IC_EVEX_W_XD_K_B, 4, "requires EVEX_B, EVEX_K, W, and XD prefix") \
209  ENUM_ENTRY(IC_EVEX_W_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, W, and OpSize") \
210  ENUM_ENTRY(IC_EVEX_L_K_B, 3, "requires EVEX_B, EVEX_K and the L prefix") \
211  ENUM_ENTRY(IC_EVEX_L_XS_K_B, 4, "requires EVEX_B, EVEX_K and the L and XS prefix")\
212  ENUM_ENTRY(IC_EVEX_L_XD_K_B, 4, "requires EVEX_B, EVEX_K and the L and XD prefix")\
213  ENUM_ENTRY(IC_EVEX_L_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, L, and OpSize") \
214  ENUM_ENTRY(IC_EVEX_L_W_K_B, 3, "requires EVEX_B, EVEX_K, L and W") \
215  ENUM_ENTRY(IC_EVEX_L_W_XS_K_B, 4, "requires EVEX_B, EVEX_K, L, W and XS prefix") \
216  ENUM_ENTRY(IC_EVEX_L_W_XD_K_B, 4, "requires EVEX_B, EVEX_K, L, W and XD prefix") \
217  ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_K_B,4, "requires EVEX_B, EVEX_K, L, W and OpSize") \
218  ENUM_ENTRY(IC_EVEX_L2_K_B, 3, "requires EVEX_B, EVEX_K and the L2 prefix") \
219  ENUM_ENTRY(IC_EVEX_L2_XS_K_B, 4, "requires EVEX_B, EVEX_K and the L2 and XS prefix")\
220  ENUM_ENTRY(IC_EVEX_L2_XD_K_B, 4, "requires EVEX_B, EVEX_K and the L2 and XD prefix")\
221  ENUM_ENTRY(IC_EVEX_L2_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, L2, and OpSize") \
222  ENUM_ENTRY(IC_EVEX_L2_W_K_B, 3, "requires EVEX_B, EVEX_K, L2 and W") \
223  ENUM_ENTRY(IC_EVEX_L2_W_XS_K_B, 4, "requires EVEX_B, EVEX_K, L2, W and XS prefix") \
224  ENUM_ENTRY(IC_EVEX_L2_W_XD_K_B, 4, "requires EVEX_B, EVEX_K, L2, W and XD prefix") \
225  ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_K_B,4, "requires EVEX_B, EVEX_K, L2, W and OpSize") \
226  ENUM_ENTRY(IC_EVEX_KZ_B, 1, "requires EVEX_B and EVEX_KZ prefix") \
227  ENUM_ENTRY(IC_EVEX_XS_KZ_B, 2, "requires EVEX_B, EVEX_KZ and the XS prefix") \
228  ENUM_ENTRY(IC_EVEX_XD_KZ_B, 2, "requires EVEX_B, EVEX_KZ and the XD prefix") \
229  ENUM_ENTRY(IC_EVEX_OPSIZE_KZ_B, 2, "requires EVEX_B, EVEX_KZ and the OpSize prefix") \
230  ENUM_ENTRY(IC_EVEX_W_KZ_B, 3, "requires EVEX_B, EVEX_KZ and the W prefix") \
231  ENUM_ENTRY(IC_EVEX_W_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ, W, and XS prefix") \
232  ENUM_ENTRY(IC_EVEX_W_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ, W, and XD prefix") \
233  ENUM_ENTRY(IC_EVEX_W_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, W, and OpSize") \
234  ENUM_ENTRY(IC_EVEX_L_KZ_B, 3, "requires EVEX_B, EVEX_KZ and the L prefix") \
235  ENUM_ENTRY(IC_EVEX_L_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L and XS prefix")\
236  ENUM_ENTRY(IC_EVEX_L_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L and XD prefix")\
237  ENUM_ENTRY(IC_EVEX_L_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, and OpSize") \
238  ENUM_ENTRY(IC_EVEX_L_W_KZ_B, 3, "requires EVEX_B, EVEX_KZ, L and W") \
239  ENUM_ENTRY(IC_EVEX_L_W_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, W and XS prefix") \
240  ENUM_ENTRY(IC_EVEX_L_W_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, W and XD prefix") \
241  ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, W and OpSize") \
242  ENUM_ENTRY(IC_EVEX_L2_KZ_B, 3, "requires EVEX_B, EVEX_KZ and the L2 prefix") \
243  ENUM_ENTRY(IC_EVEX_L2_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L2 and XS prefix")\
244  ENUM_ENTRY(IC_EVEX_L2_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L2 and XD prefix")\
245  ENUM_ENTRY(IC_EVEX_L2_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, and OpSize") \
246  ENUM_ENTRY(IC_EVEX_L2_W_KZ_B, 3, "requires EVEX_B, EVEX_KZ, L2 and W") \
247  ENUM_ENTRY(IC_EVEX_L2_W_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, W and XS prefix") \
248  ENUM_ENTRY(IC_EVEX_L2_W_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, W and XD prefix") \
249  ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, W and OpSize") \
250  ENUM_ENTRY(IC_EVEX_KZ, 1, "requires an EVEX_KZ prefix") \
251  ENUM_ENTRY(IC_EVEX_XS_KZ, 2, "requires EVEX_KZ and the XS prefix") \
252  ENUM_ENTRY(IC_EVEX_XD_KZ, 2, "requires EVEX_KZ and the XD prefix") \
253  ENUM_ENTRY(IC_EVEX_OPSIZE_KZ, 2, "requires EVEX_KZ and the OpSize prefix") \
254  ENUM_ENTRY(IC_EVEX_W_KZ, 3, "requires EVEX_KZ and the W prefix") \
255  ENUM_ENTRY(IC_EVEX_W_XS_KZ, 4, "requires EVEX_KZ, W, and XS prefix") \
256  ENUM_ENTRY(IC_EVEX_W_XD_KZ, 4, "requires EVEX_KZ, W, and XD prefix") \
257  ENUM_ENTRY(IC_EVEX_W_OPSIZE_KZ, 4, "requires EVEX_KZ, W, and OpSize") \
258  ENUM_ENTRY(IC_EVEX_L_KZ, 3, "requires EVEX_KZ and the L prefix") \
259  ENUM_ENTRY(IC_EVEX_L_XS_KZ, 4, "requires EVEX_KZ and the L and XS prefix")\
260  ENUM_ENTRY(IC_EVEX_L_XD_KZ, 4, "requires EVEX_KZ and the L and XD prefix")\
261  ENUM_ENTRY(IC_EVEX_L_OPSIZE_KZ, 4, "requires EVEX_KZ, L, and OpSize") \
262  ENUM_ENTRY(IC_EVEX_L_W_KZ, 3, "requires EVEX_KZ, L and W") \
263  ENUM_ENTRY(IC_EVEX_L_W_XS_KZ, 4, "requires EVEX_KZ, L, W and XS prefix") \
264  ENUM_ENTRY(IC_EVEX_L_W_XD_KZ, 4, "requires EVEX_KZ, L, W and XD prefix") \
265  ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_KZ, 4, "requires EVEX_KZ, L, W and OpSize") \
266  ENUM_ENTRY(IC_EVEX_L2_KZ, 3, "requires EVEX_KZ and the L2 prefix") \
267  ENUM_ENTRY(IC_EVEX_L2_XS_KZ, 4, "requires EVEX_KZ and the L2 and XS prefix")\
268  ENUM_ENTRY(IC_EVEX_L2_XD_KZ, 4, "requires EVEX_KZ and the L2 and XD prefix")\
269  ENUM_ENTRY(IC_EVEX_L2_OPSIZE_KZ, 4, "requires EVEX_KZ, L2, and OpSize") \
270  ENUM_ENTRY(IC_EVEX_L2_W_KZ, 3, "requires EVEX_KZ, L2 and W") \
271  ENUM_ENTRY(IC_EVEX_L2_W_XS_KZ, 4, "requires EVEX_KZ, L2, W and XS prefix") \
272  ENUM_ENTRY(IC_EVEX_L2_W_XD_KZ, 4, "requires EVEX_KZ, L2, W and XD prefix") \
273  ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_KZ, 4, "requires EVEX_KZ, L2, W and OpSize")
274 
275 #define ENUM_ENTRY(n, r, d) n,
279 };
280 #undef ENUM_ENTRY
281 
282 // Opcode types, which determine which decode table to use, both in the Intel
283 // manual and also for the decoder.
285  ONEBYTE = 0,
286  TWOBYTE = 1,
289  XOP8_MAP = 4,
290  XOP9_MAP = 5,
292 };
293 
294 // The following structs are used for the hierarchical decode table. After
295 // determining the instruction's class (i.e., which IC_* constant applies to
296 // it), the decoder reads the opcode. Some instructions require specific
297 // values of the ModR/M byte, so the ModR/M byte indexes into the final table.
298 //
299 // If a ModR/M byte is not required, "required" is left unset, and the values
300 // for each instructionID are identical.
301 typedef uint16_t InstrUID;
302 
303 // ModRMDecisionType - describes the type of ModR/M decision, allowing the
304 // consumer to determine the number of entries in it.
305 //
306 // MODRM_ONEENTRY - No matter what the value of the ModR/M byte is, the decoded
307 // instruction is the same.
308 // MODRM_SPLITRM - If the ModR/M byte is between 0x00 and 0xbf, the opcode
309 // corresponds to one instruction; otherwise, it corresponds to
310 // a different instruction.
311 // MODRM_SPLITMISC- If the ModR/M byte is between 0x00 and 0xbf, ModR/M byte
312 // divided by 8 is used to select instruction; otherwise, each
313 // value of the ModR/M byte could correspond to a different
314 // instruction.
315 // MODRM_SPLITREG - ModR/M byte divided by 8 is used to select instruction. This
316 // corresponds to instructions that use reg field as opcode
317 // MODRM_FULL - Potentially, each value of the ModR/M byte could correspond
318 // to a different instruction.
319 #define MODRMTYPES \
320  ENUM_ENTRY(MODRM_ONEENTRY) \
321  ENUM_ENTRY(MODRM_SPLITRM) \
322  ENUM_ENTRY(MODRM_SPLITMISC) \
323  ENUM_ENTRY(MODRM_SPLITREG) \
324  ENUM_ENTRY(MODRM_FULL)
325 
326 #define ENUM_ENTRY(n) n,
328  MODRMTYPES
330 };
331 #undef ENUM_ENTRY
332 
333 #define CASE_ENCODING_RM \
334  case ENCODING_RM: \
335  case ENCODING_RM_CD2: \
336  case ENCODING_RM_CD4: \
337  case ENCODING_RM_CD8: \
338  case ENCODING_RM_CD16: \
339  case ENCODING_RM_CD32: \
340  case ENCODING_RM_CD64
341 
342 #define CASE_ENCODING_VSIB \
343  case ENCODING_VSIB: \
344  case ENCODING_VSIB_CD2: \
345  case ENCODING_VSIB_CD4: \
346  case ENCODING_VSIB_CD8: \
347  case ENCODING_VSIB_CD16: \
348  case ENCODING_VSIB_CD32: \
349  case ENCODING_VSIB_CD64
350 
351 // Physical encodings of instruction operands.
352 #define ENCODINGS \
353  ENUM_ENTRY(ENCODING_NONE, "") \
354  ENUM_ENTRY(ENCODING_REG, "Register operand in ModR/M byte.") \
355  ENUM_ENTRY(ENCODING_RM, "R/M operand in ModR/M byte.") \
356  ENUM_ENTRY(ENCODING_RM_CD2, "R/M operand with CDisp scaling of 2") \
357  ENUM_ENTRY(ENCODING_RM_CD4, "R/M operand with CDisp scaling of 4") \
358  ENUM_ENTRY(ENCODING_RM_CD8, "R/M operand with CDisp scaling of 8") \
359  ENUM_ENTRY(ENCODING_RM_CD16,"R/M operand with CDisp scaling of 16") \
360  ENUM_ENTRY(ENCODING_RM_CD32,"R/M operand with CDisp scaling of 32") \
361  ENUM_ENTRY(ENCODING_RM_CD64,"R/M operand with CDisp scaling of 64") \
362  ENUM_ENTRY(ENCODING_VSIB, "VSIB operand in ModR/M byte.") \
363  ENUM_ENTRY(ENCODING_VSIB_CD2, "VSIB operand with CDisp scaling of 2") \
364  ENUM_ENTRY(ENCODING_VSIB_CD4, "VSIB operand with CDisp scaling of 4") \
365  ENUM_ENTRY(ENCODING_VSIB_CD8, "VSIB operand with CDisp scaling of 8") \
366  ENUM_ENTRY(ENCODING_VSIB_CD16,"VSIB operand with CDisp scaling of 16") \
367  ENUM_ENTRY(ENCODING_VSIB_CD32,"VSIB operand with CDisp scaling of 32") \
368  ENUM_ENTRY(ENCODING_VSIB_CD64,"VSIB operand with CDisp scaling of 64") \
369  ENUM_ENTRY(ENCODING_VVVV, "Register operand in VEX.vvvv byte.") \
370  ENUM_ENTRY(ENCODING_WRITEMASK, "Register operand in EVEX.aaa byte.") \
371  ENUM_ENTRY(ENCODING_IB, "1-byte immediate") \
372  ENUM_ENTRY(ENCODING_IW, "2-byte") \
373  ENUM_ENTRY(ENCODING_ID, "4-byte") \
374  ENUM_ENTRY(ENCODING_IO, "8-byte") \
375  ENUM_ENTRY(ENCODING_RB, "(AL..DIL, R8L..R15L) Register code added to " \
376  "the opcode byte") \
377  ENUM_ENTRY(ENCODING_RW, "(AX..DI, R8W..R15W)") \
378  ENUM_ENTRY(ENCODING_RD, "(EAX..EDI, R8D..R15D)") \
379  ENUM_ENTRY(ENCODING_RO, "(RAX..RDI, R8..R15)") \
380  ENUM_ENTRY(ENCODING_FP, "Position on floating-point stack in ModR/M " \
381  "byte.") \
382  \
383  ENUM_ENTRY(ENCODING_Iv, "Immediate of operand size") \
384  ENUM_ENTRY(ENCODING_Ia, "Immediate of address size") \
385  ENUM_ENTRY(ENCODING_IRC, "Immediate for static rounding control") \
386  ENUM_ENTRY(ENCODING_Rv, "Register code of operand size added to the " \
387  "opcode byte") \
388  ENUM_ENTRY(ENCODING_DUP, "Duplicate of another operand; ID is encoded " \
389  "in type") \
390  ENUM_ENTRY(ENCODING_SI, "Source index; encoded in OpSize/Adsize prefix") \
391  ENUM_ENTRY(ENCODING_DI, "Destination index; encoded in prefixes")
392 
393 #define ENUM_ENTRY(n, d) n,
395  ENCODINGS
397 };
398 #undef ENUM_ENTRY
399 
400 // Semantic interpretations of instruction operands.
401 #define TYPES \
402  ENUM_ENTRY(TYPE_NONE, "") \
403  ENUM_ENTRY(TYPE_REL, "immediate address") \
404  ENUM_ENTRY(TYPE_R8, "1-byte register operand") \
405  ENUM_ENTRY(TYPE_R16, "2-byte") \
406  ENUM_ENTRY(TYPE_R32, "4-byte") \
407  ENUM_ENTRY(TYPE_R64, "8-byte") \
408  ENUM_ENTRY(TYPE_IMM, "immediate operand") \
409  ENUM_ENTRY(TYPE_IMM3, "1-byte immediate operand between 0 and 7") \
410  ENUM_ENTRY(TYPE_IMM5, "1-byte immediate operand between 0 and 31") \
411  ENUM_ENTRY(TYPE_AVX512ICC, "1-byte immediate operand for AVX512 icmp") \
412  ENUM_ENTRY(TYPE_UIMM8, "1-byte unsigned immediate operand") \
413  ENUM_ENTRY(TYPE_M, "Memory operand") \
414  ENUM_ENTRY(TYPE_MVSIBX, "Memory operand using XMM index") \
415  ENUM_ENTRY(TYPE_MVSIBY, "Memory operand using YMM index") \
416  ENUM_ENTRY(TYPE_MVSIBZ, "Memory operand using ZMM index") \
417  ENUM_ENTRY(TYPE_SRCIDX, "memory at source index") \
418  ENUM_ENTRY(TYPE_DSTIDX, "memory at destination index") \
419  ENUM_ENTRY(TYPE_MOFFS, "memory offset (relative to segment base)") \
420  ENUM_ENTRY(TYPE_ST, "Position on the floating-point stack") \
421  ENUM_ENTRY(TYPE_MM64, "8-byte MMX register") \
422  ENUM_ENTRY(TYPE_XMM, "16-byte") \
423  ENUM_ENTRY(TYPE_YMM, "32-byte") \
424  ENUM_ENTRY(TYPE_ZMM, "64-byte") \
425  ENUM_ENTRY(TYPE_VK, "mask register") \
426  ENUM_ENTRY(TYPE_SEGMENTREG, "Segment register operand") \
427  ENUM_ENTRY(TYPE_DEBUGREG, "Debug register operand") \
428  ENUM_ENTRY(TYPE_CONTROLREG, "Control register operand") \
429  ENUM_ENTRY(TYPE_BNDR, "MPX bounds register") \
430  \
431  ENUM_ENTRY(TYPE_Rv, "Register operand of operand size") \
432  ENUM_ENTRY(TYPE_RELv, "Immediate address of operand size") \
433  ENUM_ENTRY(TYPE_DUP0, "Duplicate of operand 0") \
434  ENUM_ENTRY(TYPE_DUP1, "operand 1") \
435  ENUM_ENTRY(TYPE_DUP2, "operand 2") \
436  ENUM_ENTRY(TYPE_DUP3, "operand 3") \
437  ENUM_ENTRY(TYPE_DUP4, "operand 4") \
438 
439 #define ENUM_ENTRY(n, d) n,
441  TYPES
443 };
444 #undef ENUM_ENTRY
445 
446 /// \brief The specification for how to extract and interpret one operand.
448  uint8_t encoding;
449  uint8_t type;
450 };
451 
452 static const unsigned X86_MAX_OPERANDS = 6;
453 
454 /// Decoding mode for the Intel disassembler. 16-bit, 32-bit, and 64-bit mode
455 /// are supported, and represent real mode, IA-32e, and IA-32e in 64-bit mode,
456 /// respectively.
461 };
462 
463 } // namespace X86Disassembler
464 } // namespace llvm
465 
466 #endif
#define ATTRIBUTE_BITS
#define MODRMTYPES
Compute iterated dominance frontiers using a linear time algorithm.
Definition: AllocatorList.h:24
static const unsigned X86_MAX_OPERANDS
#define ENCODINGS
The specification for how to extract and interpret one operand.
#define INSTRUCTION_CONTEXTS
DisassemblerMode
Decoding mode for the Intel disassembler.