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 21 namespace llvm { 22 namespace 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 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 #define THREEDNOW_MAP_STR "x86Disassembler3DNowOpcodes" 45 46 // Attributes of an instruction that must be known before the opcode can be 47 // processed correctly. Most of these indicate the presence of particular 48 // prefixes, but ATTR_64BIT is simply an attribute of the decoding context. 49 enum attributeBits { 50 ATTR_NONE = 0x00, 51 ATTR_64BIT = 0x1 << 0, 52 ATTR_XS = 0x1 << 1, 53 ATTR_XD = 0x1 << 2, 54 ATTR_REXW = 0x1 << 3, 55 ATTR_OPSIZE = 0x1 << 4, 56 ATTR_ADSIZE = 0x1 << 5, 57 ATTR_VEX = 0x1 << 6, 58 ATTR_VEXL = 0x1 << 7, 59 ATTR_EVEX = 0x1 << 8, 60 ATTR_EVEXL2 = 0x1 << 9, 61 ATTR_EVEXK = 0x1 << 10, 62 ATTR_EVEXKZ = 0x1 << 11, 63 ATTR_EVEXB = 0x1 << 12, 64 ATTR_max = 0x1 << 13, 65 }; 66 67 // Combinations of the above attributes that are relevant to instruction 68 // decode. Although other combinations are possible, they can be reduced to 69 // these without affecting the ultimately decoded instruction. 70 71 // Class name Rank Rationale for rank assignment 72 #define INSTRUCTION_CONTEXTS \ 73 ENUM_ENTRY(IC, 0, "says nothing about the instruction") \ 74 ENUM_ENTRY(IC_64BIT, 1, "says the instruction applies in " \ 75 "64-bit mode but no more") \ 76 ENUM_ENTRY(IC_OPSIZE, 3, "requires an OPSIZE prefix, so " \ 77 "operands change width") \ 78 ENUM_ENTRY(IC_ADSIZE, 3, "requires an ADSIZE prefix, so " \ 79 "operands change width") \ 80 ENUM_ENTRY(IC_OPSIZE_ADSIZE, 4, "requires ADSIZE and OPSIZE prefixes") \ 81 ENUM_ENTRY(IC_XD, 2, "may say something about the opcode " \ 82 "but not the operands") \ 83 ENUM_ENTRY(IC_XS, 2, "may say something about the opcode " \ 84 "but not the operands") \ 85 ENUM_ENTRY(IC_XD_OPSIZE, 3, "requires an OPSIZE prefix, so " \ 86 "operands change width") \ 87 ENUM_ENTRY(IC_XS_OPSIZE, 3, "requires an OPSIZE prefix, so " \ 88 "operands change width") \ 89 ENUM_ENTRY(IC_XD_ADSIZE, 3, "requires an ADSIZE prefix, so " \ 90 "operands change width") \ 91 ENUM_ENTRY(IC_XS_ADSIZE, 3, "requires an ADSIZE prefix, so " \ 92 "operands change width") \ 93 ENUM_ENTRY(IC_64BIT_REXW, 5, "requires a REX.W prefix, so operands "\ 94 "change width; overrides IC_OPSIZE") \ 95 ENUM_ENTRY(IC_64BIT_REXW_ADSIZE, 6, "requires a REX.W prefix and 0x67 " \ 96 "prefix") \ 97 ENUM_ENTRY(IC_64BIT_OPSIZE, 3, "Just as meaningful as IC_OPSIZE") \ 98 ENUM_ENTRY(IC_64BIT_ADSIZE, 3, "Just as meaningful as IC_ADSIZE") \ 99 ENUM_ENTRY(IC_64BIT_OPSIZE_ADSIZE, 4, "Just as meaningful as IC_OPSIZE/" \ 100 "IC_ADSIZE") \ 101 ENUM_ENTRY(IC_64BIT_XD, 6, "XD instructions are SSE; REX.W is " \ 102 "secondary") \ 103 ENUM_ENTRY(IC_64BIT_XS, 6, "Just as meaningful as IC_64BIT_XD") \ 104 ENUM_ENTRY(IC_64BIT_XD_OPSIZE, 3, "Just as meaningful as IC_XD_OPSIZE") \ 105 ENUM_ENTRY(IC_64BIT_XS_OPSIZE, 3, "Just as meaningful as IC_XS_OPSIZE") \ 106 ENUM_ENTRY(IC_64BIT_XD_ADSIZE, 3, "Just as meaningful as IC_XD_ADSIZE") \ 107 ENUM_ENTRY(IC_64BIT_XS_ADSIZE, 3, "Just as meaningful as IC_XS_ADSIZE") \ 108 ENUM_ENTRY(IC_64BIT_REXW_XS, 7, "OPSIZE could mean a different " \ 109 "opcode") \ 110 ENUM_ENTRY(IC_64BIT_REXW_XD, 7, "Just as meaningful as " \ 111 "IC_64BIT_REXW_XS") \ 112 ENUM_ENTRY(IC_64BIT_REXW_OPSIZE, 8, "The Dynamic Duo! Prefer over all " \ 113 "else because this changes most " \ 114 "operands' meaning") \ 115 ENUM_ENTRY(IC_VEX, 1, "requires a VEX prefix") \ 116 ENUM_ENTRY(IC_VEX_XS, 2, "requires VEX and the XS prefix") \ 117 ENUM_ENTRY(IC_VEX_XD, 2, "requires VEX and the XD prefix") \ 118 ENUM_ENTRY(IC_VEX_OPSIZE, 2, "requires VEX and the OpSize prefix") \ 119 ENUM_ENTRY(IC_VEX_W, 3, "requires VEX and the W prefix") \ 120 ENUM_ENTRY(IC_VEX_W_XS, 4, "requires VEX, W, and XS prefix") \ 121 ENUM_ENTRY(IC_VEX_W_XD, 4, "requires VEX, W, and XD prefix") \ 122 ENUM_ENTRY(IC_VEX_W_OPSIZE, 4, "requires VEX, W, and OpSize") \ 123 ENUM_ENTRY(IC_VEX_L, 3, "requires VEX and the L prefix") \ 124 ENUM_ENTRY(IC_VEX_L_XS, 4, "requires VEX and the L and XS prefix")\ 125 ENUM_ENTRY(IC_VEX_L_XD, 4, "requires VEX and the L and XD prefix")\ 126 ENUM_ENTRY(IC_VEX_L_OPSIZE, 4, "requires VEX, L, and OpSize") \ 127 ENUM_ENTRY(IC_VEX_L_W, 4, "requires VEX, L and W") \ 128 ENUM_ENTRY(IC_VEX_L_W_XS, 5, "requires VEX, L, W and XS prefix") \ 129 ENUM_ENTRY(IC_VEX_L_W_XD, 5, "requires VEX, L, W and XD prefix") \ 130 ENUM_ENTRY(IC_VEX_L_W_OPSIZE, 5, "requires VEX, L, W and OpSize") \ 131 ENUM_ENTRY(IC_EVEX, 1, "requires an EVEX prefix") \ 132 ENUM_ENTRY(IC_EVEX_XS, 2, "requires EVEX and the XS prefix") \ 133 ENUM_ENTRY(IC_EVEX_XD, 2, "requires EVEX and the XD prefix") \ 134 ENUM_ENTRY(IC_EVEX_OPSIZE, 2, "requires EVEX and the OpSize prefix") \ 135 ENUM_ENTRY(IC_EVEX_W, 3, "requires EVEX and the W prefix") \ 136 ENUM_ENTRY(IC_EVEX_W_XS, 4, "requires EVEX, W, and XS prefix") \ 137 ENUM_ENTRY(IC_EVEX_W_XD, 4, "requires EVEX, W, and XD prefix") \ 138 ENUM_ENTRY(IC_EVEX_W_OPSIZE, 4, "requires EVEX, W, and OpSize") \ 139 ENUM_ENTRY(IC_EVEX_L, 3, "requires EVEX and the L prefix") \ 140 ENUM_ENTRY(IC_EVEX_L_XS, 4, "requires EVEX and the L and XS prefix")\ 141 ENUM_ENTRY(IC_EVEX_L_XD, 4, "requires EVEX and the L and XD prefix")\ 142 ENUM_ENTRY(IC_EVEX_L_OPSIZE, 4, "requires EVEX, L, and OpSize") \ 143 ENUM_ENTRY(IC_EVEX_L_W, 3, "requires EVEX, L and W") \ 144 ENUM_ENTRY(IC_EVEX_L_W_XS, 4, "requires EVEX, L, W and XS prefix") \ 145 ENUM_ENTRY(IC_EVEX_L_W_XD, 4, "requires EVEX, L, W and XD prefix") \ 146 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE, 4, "requires EVEX, L, W and OpSize") \ 147 ENUM_ENTRY(IC_EVEX_L2, 3, "requires EVEX and the L2 prefix") \ 148 ENUM_ENTRY(IC_EVEX_L2_XS, 4, "requires EVEX and the L2 and XS prefix")\ 149 ENUM_ENTRY(IC_EVEX_L2_XD, 4, "requires EVEX and the L2 and XD prefix")\ 150 ENUM_ENTRY(IC_EVEX_L2_OPSIZE, 4, "requires EVEX, L2, and OpSize") \ 151 ENUM_ENTRY(IC_EVEX_L2_W, 3, "requires EVEX, L2 and W") \ 152 ENUM_ENTRY(IC_EVEX_L2_W_XS, 4, "requires EVEX, L2, W and XS prefix") \ 153 ENUM_ENTRY(IC_EVEX_L2_W_XD, 4, "requires EVEX, L2, W and XD prefix") \ 154 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE, 4, "requires EVEX, L2, W and OpSize") \ 155 ENUM_ENTRY(IC_EVEX_K, 1, "requires an EVEX_K prefix") \ 156 ENUM_ENTRY(IC_EVEX_XS_K, 2, "requires EVEX_K and the XS prefix") \ 157 ENUM_ENTRY(IC_EVEX_XD_K, 2, "requires EVEX_K and the XD prefix") \ 158 ENUM_ENTRY(IC_EVEX_OPSIZE_K, 2, "requires EVEX_K and the OpSize prefix") \ 159 ENUM_ENTRY(IC_EVEX_W_K, 3, "requires EVEX_K and the W prefix") \ 160 ENUM_ENTRY(IC_EVEX_W_XS_K, 4, "requires EVEX_K, W, and XS prefix") \ 161 ENUM_ENTRY(IC_EVEX_W_XD_K, 4, "requires EVEX_K, W, and XD prefix") \ 162 ENUM_ENTRY(IC_EVEX_W_OPSIZE_K, 4, "requires EVEX_K, W, and OpSize") \ 163 ENUM_ENTRY(IC_EVEX_L_K, 3, "requires EVEX_K and the L prefix") \ 164 ENUM_ENTRY(IC_EVEX_L_XS_K, 4, "requires EVEX_K and the L and XS prefix")\ 165 ENUM_ENTRY(IC_EVEX_L_XD_K, 4, "requires EVEX_K and the L and XD prefix")\ 166 ENUM_ENTRY(IC_EVEX_L_OPSIZE_K, 4, "requires EVEX_K, L, and OpSize") \ 167 ENUM_ENTRY(IC_EVEX_L_W_K, 3, "requires EVEX_K, L and W") \ 168 ENUM_ENTRY(IC_EVEX_L_W_XS_K, 4, "requires EVEX_K, L, W and XS prefix") \ 169 ENUM_ENTRY(IC_EVEX_L_W_XD_K, 4, "requires EVEX_K, L, W and XD prefix") \ 170 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_K, 4, "requires EVEX_K, L, W and OpSize") \ 171 ENUM_ENTRY(IC_EVEX_L2_K, 3, "requires EVEX_K and the L2 prefix") \ 172 ENUM_ENTRY(IC_EVEX_L2_XS_K, 4, "requires EVEX_K and the L2 and XS prefix")\ 173 ENUM_ENTRY(IC_EVEX_L2_XD_K, 4, "requires EVEX_K and the L2 and XD prefix")\ 174 ENUM_ENTRY(IC_EVEX_L2_OPSIZE_K, 4, "requires EVEX_K, L2, and OpSize") \ 175 ENUM_ENTRY(IC_EVEX_L2_W_K, 3, "requires EVEX_K, L2 and W") \ 176 ENUM_ENTRY(IC_EVEX_L2_W_XS_K, 4, "requires EVEX_K, L2, W and XS prefix") \ 177 ENUM_ENTRY(IC_EVEX_L2_W_XD_K, 4, "requires EVEX_K, L2, W and XD prefix") \ 178 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_K, 4, "requires EVEX_K, L2, W and OpSize") \ 179 ENUM_ENTRY(IC_EVEX_B, 1, "requires an EVEX_B prefix") \ 180 ENUM_ENTRY(IC_EVEX_XS_B, 2, "requires EVEX_B and the XS prefix") \ 181 ENUM_ENTRY(IC_EVEX_XD_B, 2, "requires EVEX_B and the XD prefix") \ 182 ENUM_ENTRY(IC_EVEX_OPSIZE_B, 2, "requires EVEX_B and the OpSize prefix") \ 183 ENUM_ENTRY(IC_EVEX_W_B, 3, "requires EVEX_B and the W prefix") \ 184 ENUM_ENTRY(IC_EVEX_W_XS_B, 4, "requires EVEX_B, W, and XS prefix") \ 185 ENUM_ENTRY(IC_EVEX_W_XD_B, 4, "requires EVEX_B, W, and XD prefix") \ 186 ENUM_ENTRY(IC_EVEX_W_OPSIZE_B, 4, "requires EVEX_B, W, and OpSize") \ 187 ENUM_ENTRY(IC_EVEX_L_B, 3, "requires EVEX_B and the L prefix") \ 188 ENUM_ENTRY(IC_EVEX_L_XS_B, 4, "requires EVEX_B and the L and XS prefix")\ 189 ENUM_ENTRY(IC_EVEX_L_XD_B, 4, "requires EVEX_B and the L and XD prefix")\ 190 ENUM_ENTRY(IC_EVEX_L_OPSIZE_B, 4, "requires EVEX_B, L, and OpSize") \ 191 ENUM_ENTRY(IC_EVEX_L_W_B, 3, "requires EVEX_B, L and W") \ 192 ENUM_ENTRY(IC_EVEX_L_W_XS_B, 4, "requires EVEX_B, L, W and XS prefix") \ 193 ENUM_ENTRY(IC_EVEX_L_W_XD_B, 4, "requires EVEX_B, L, W and XD prefix") \ 194 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_B, 4, "requires EVEX_B, L, W and OpSize") \ 195 ENUM_ENTRY(IC_EVEX_L2_B, 3, "requires EVEX_B and the L2 prefix") \ 196 ENUM_ENTRY(IC_EVEX_L2_XS_B, 4, "requires EVEX_B and the L2 and XS prefix")\ 197 ENUM_ENTRY(IC_EVEX_L2_XD_B, 4, "requires EVEX_B and the L2 and XD prefix")\ 198 ENUM_ENTRY(IC_EVEX_L2_OPSIZE_B, 4, "requires EVEX_B, L2, and OpSize") \ 199 ENUM_ENTRY(IC_EVEX_L2_W_B, 3, "requires EVEX_B, L2 and W") \ 200 ENUM_ENTRY(IC_EVEX_L2_W_XS_B, 4, "requires EVEX_B, L2, W and XS prefix") \ 201 ENUM_ENTRY(IC_EVEX_L2_W_XD_B, 4, "requires EVEX_B, L2, W and XD prefix") \ 202 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_B, 4, "requires EVEX_B, L2, W and OpSize") \ 203 ENUM_ENTRY(IC_EVEX_K_B, 1, "requires EVEX_B and EVEX_K prefix") \ 204 ENUM_ENTRY(IC_EVEX_XS_K_B, 2, "requires EVEX_B, EVEX_K and the XS prefix") \ 205 ENUM_ENTRY(IC_EVEX_XD_K_B, 2, "requires EVEX_B, EVEX_K and the XD prefix") \ 206 ENUM_ENTRY(IC_EVEX_OPSIZE_K_B, 2, "requires EVEX_B, EVEX_K and the OpSize prefix") \ 207 ENUM_ENTRY(IC_EVEX_W_K_B, 3, "requires EVEX_B, EVEX_K and the W prefix") \ 208 ENUM_ENTRY(IC_EVEX_W_XS_K_B, 4, "requires EVEX_B, EVEX_K, W, and XS prefix") \ 209 ENUM_ENTRY(IC_EVEX_W_XD_K_B, 4, "requires EVEX_B, EVEX_K, W, and XD prefix") \ 210 ENUM_ENTRY(IC_EVEX_W_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, W, and OpSize") \ 211 ENUM_ENTRY(IC_EVEX_L_K_B, 3, "requires EVEX_B, EVEX_K and the L prefix") \ 212 ENUM_ENTRY(IC_EVEX_L_XS_K_B, 4, "requires EVEX_B, EVEX_K and the L and XS prefix")\ 213 ENUM_ENTRY(IC_EVEX_L_XD_K_B, 4, "requires EVEX_B, EVEX_K and the L and XD prefix")\ 214 ENUM_ENTRY(IC_EVEX_L_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, L, and OpSize") \ 215 ENUM_ENTRY(IC_EVEX_L_W_K_B, 3, "requires EVEX_B, EVEX_K, L and W") \ 216 ENUM_ENTRY(IC_EVEX_L_W_XS_K_B, 4, "requires EVEX_B, EVEX_K, L, W and XS prefix") \ 217 ENUM_ENTRY(IC_EVEX_L_W_XD_K_B, 4, "requires EVEX_B, EVEX_K, L, W and XD prefix") \ 218 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_K_B,4, "requires EVEX_B, EVEX_K, L, W and OpSize") \ 219 ENUM_ENTRY(IC_EVEX_L2_K_B, 3, "requires EVEX_B, EVEX_K and the L2 prefix") \ 220 ENUM_ENTRY(IC_EVEX_L2_XS_K_B, 4, "requires EVEX_B, EVEX_K and the L2 and XS prefix")\ 221 ENUM_ENTRY(IC_EVEX_L2_XD_K_B, 4, "requires EVEX_B, EVEX_K and the L2 and XD prefix")\ 222 ENUM_ENTRY(IC_EVEX_L2_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, L2, and OpSize") \ 223 ENUM_ENTRY(IC_EVEX_L2_W_K_B, 3, "requires EVEX_B, EVEX_K, L2 and W") \ 224 ENUM_ENTRY(IC_EVEX_L2_W_XS_K_B, 4, "requires EVEX_B, EVEX_K, L2, W and XS prefix") \ 225 ENUM_ENTRY(IC_EVEX_L2_W_XD_K_B, 4, "requires EVEX_B, EVEX_K, L2, W and XD prefix") \ 226 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_K_B,4, "requires EVEX_B, EVEX_K, L2, W and OpSize") \ 227 ENUM_ENTRY(IC_EVEX_KZ_B, 1, "requires EVEX_B and EVEX_KZ prefix") \ 228 ENUM_ENTRY(IC_EVEX_XS_KZ_B, 2, "requires EVEX_B, EVEX_KZ and the XS prefix") \ 229 ENUM_ENTRY(IC_EVEX_XD_KZ_B, 2, "requires EVEX_B, EVEX_KZ and the XD prefix") \ 230 ENUM_ENTRY(IC_EVEX_OPSIZE_KZ_B, 2, "requires EVEX_B, EVEX_KZ and the OpSize prefix") \ 231 ENUM_ENTRY(IC_EVEX_W_KZ_B, 3, "requires EVEX_B, EVEX_KZ and the W prefix") \ 232 ENUM_ENTRY(IC_EVEX_W_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ, W, and XS prefix") \ 233 ENUM_ENTRY(IC_EVEX_W_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ, W, and XD prefix") \ 234 ENUM_ENTRY(IC_EVEX_W_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, W, and OpSize") \ 235 ENUM_ENTRY(IC_EVEX_L_KZ_B, 3, "requires EVEX_B, EVEX_KZ and the L prefix") \ 236 ENUM_ENTRY(IC_EVEX_L_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L and XS prefix")\ 237 ENUM_ENTRY(IC_EVEX_L_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L and XD prefix")\ 238 ENUM_ENTRY(IC_EVEX_L_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, and OpSize") \ 239 ENUM_ENTRY(IC_EVEX_L_W_KZ_B, 3, "requires EVEX_B, EVEX_KZ, L and W") \ 240 ENUM_ENTRY(IC_EVEX_L_W_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, W and XS prefix") \ 241 ENUM_ENTRY(IC_EVEX_L_W_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, W and XD prefix") \ 242 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, W and OpSize") \ 243 ENUM_ENTRY(IC_EVEX_L2_KZ_B, 3, "requires EVEX_B, EVEX_KZ and the L2 prefix") \ 244 ENUM_ENTRY(IC_EVEX_L2_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L2 and XS prefix")\ 245 ENUM_ENTRY(IC_EVEX_L2_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L2 and XD prefix")\ 246 ENUM_ENTRY(IC_EVEX_L2_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, and OpSize") \ 247 ENUM_ENTRY(IC_EVEX_L2_W_KZ_B, 3, "requires EVEX_B, EVEX_KZ, L2 and W") \ 248 ENUM_ENTRY(IC_EVEX_L2_W_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, W and XS prefix") \ 249 ENUM_ENTRY(IC_EVEX_L2_W_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, W and XD prefix") \ 250 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, W and OpSize") \ 251 ENUM_ENTRY(IC_EVEX_KZ, 1, "requires an EVEX_KZ prefix") \ 252 ENUM_ENTRY(IC_EVEX_XS_KZ, 2, "requires EVEX_KZ and the XS prefix") \ 253 ENUM_ENTRY(IC_EVEX_XD_KZ, 2, "requires EVEX_KZ and the XD prefix") \ 254 ENUM_ENTRY(IC_EVEX_OPSIZE_KZ, 2, "requires EVEX_KZ and the OpSize prefix") \ 255 ENUM_ENTRY(IC_EVEX_W_KZ, 3, "requires EVEX_KZ and the W prefix") \ 256 ENUM_ENTRY(IC_EVEX_W_XS_KZ, 4, "requires EVEX_KZ, W, and XS prefix") \ 257 ENUM_ENTRY(IC_EVEX_W_XD_KZ, 4, "requires EVEX_KZ, W, and XD prefix") \ 258 ENUM_ENTRY(IC_EVEX_W_OPSIZE_KZ, 4, "requires EVEX_KZ, W, and OpSize") \ 259 ENUM_ENTRY(IC_EVEX_L_KZ, 3, "requires EVEX_KZ and the L prefix") \ 260 ENUM_ENTRY(IC_EVEX_L_XS_KZ, 4, "requires EVEX_KZ and the L and XS prefix")\ 261 ENUM_ENTRY(IC_EVEX_L_XD_KZ, 4, "requires EVEX_KZ and the L and XD prefix")\ 262 ENUM_ENTRY(IC_EVEX_L_OPSIZE_KZ, 4, "requires EVEX_KZ, L, and OpSize") \ 263 ENUM_ENTRY(IC_EVEX_L_W_KZ, 3, "requires EVEX_KZ, L and W") \ 264 ENUM_ENTRY(IC_EVEX_L_W_XS_KZ, 4, "requires EVEX_KZ, L, W and XS prefix") \ 265 ENUM_ENTRY(IC_EVEX_L_W_XD_KZ, 4, "requires EVEX_KZ, L, W and XD prefix") \ 266 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_KZ, 4, "requires EVEX_KZ, L, W and OpSize") \ 267 ENUM_ENTRY(IC_EVEX_L2_KZ, 3, "requires EVEX_KZ and the L2 prefix") \ 268 ENUM_ENTRY(IC_EVEX_L2_XS_KZ, 4, "requires EVEX_KZ and the L2 and XS prefix")\ 269 ENUM_ENTRY(IC_EVEX_L2_XD_KZ, 4, "requires EVEX_KZ and the L2 and XD prefix")\ 270 ENUM_ENTRY(IC_EVEX_L2_OPSIZE_KZ, 4, "requires EVEX_KZ, L2, and OpSize") \ 271 ENUM_ENTRY(IC_EVEX_L2_W_KZ, 3, "requires EVEX_KZ, L2 and W") \ 272 ENUM_ENTRY(IC_EVEX_L2_W_XS_KZ, 4, "requires EVEX_KZ, L2, W and XS prefix") \ 273 ENUM_ENTRY(IC_EVEX_L2_W_XD_KZ, 4, "requires EVEX_KZ, L2, W and XD prefix") \ 274 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_KZ, 4, "requires EVEX_KZ, L2, W and OpSize") 275 276 #define ENUM_ENTRY(n, r, d) n, 277 enum InstructionContext { 278 INSTRUCTION_CONTEXTS 279 IC_max 280 }; 281 #undef ENUM_ENTRY 282 283 // Opcode types, which determine which decode table to use, both in the Intel 284 // manual and also for the decoder. 285 enum OpcodeType { 286 ONEBYTE = 0, 287 TWOBYTE = 1, 288 THREEBYTE_38 = 2, 289 THREEBYTE_3A = 3, 290 XOP8_MAP = 4, 291 XOP9_MAP = 5, 292 XOPA_MAP = 6, 293 THREEDNOW_MAP = 7 294 }; 295 296 // The following structs are used for the hierarchical decode table. After 297 // determining the instruction's class (i.e., which IC_* constant applies to 298 // it), the decoder reads the opcode. Some instructions require specific 299 // values of the ModR/M byte, so the ModR/M byte indexes into the final table. 300 // 301 // If a ModR/M byte is not required, "required" is left unset, and the values 302 // for each instructionID are identical. 303 typedef uint16_t InstrUID; 304 305 // ModRMDecisionType - describes the type of ModR/M decision, allowing the 306 // consumer to determine the number of entries in it. 307 // 308 // MODRM_ONEENTRY - No matter what the value of the ModR/M byte is, the decoded 309 // instruction is the same. 310 // MODRM_SPLITRM - If the ModR/M byte is between 0x00 and 0xbf, the opcode 311 // corresponds to one instruction; otherwise, it corresponds to 312 // a different instruction. 313 // MODRM_SPLITMISC- If the ModR/M byte is between 0x00 and 0xbf, ModR/M byte 314 // divided by 8 is used to select instruction; otherwise, each 315 // value of the ModR/M byte could correspond to a different 316 // instruction. 317 // MODRM_SPLITREG - ModR/M byte divided by 8 is used to select instruction. This 318 // corresponds to instructions that use reg field as opcode 319 // MODRM_FULL - Potentially, each value of the ModR/M byte could correspond 320 // to a different instruction. 321 #define MODRMTYPES \ 322 ENUM_ENTRY(MODRM_ONEENTRY) \ 323 ENUM_ENTRY(MODRM_SPLITRM) \ 324 ENUM_ENTRY(MODRM_SPLITMISC) \ 325 ENUM_ENTRY(MODRM_SPLITREG) \ 326 ENUM_ENTRY(MODRM_FULL) 327 328 #define ENUM_ENTRY(n) n, 329 enum ModRMDecisionType { 330 MODRMTYPES 331 MODRM_max 332 }; 333 #undef ENUM_ENTRY 334 335 #define CASE_ENCODING_RM \ 336 case ENCODING_RM: \ 337 case ENCODING_RM_CD2: \ 338 case ENCODING_RM_CD4: \ 339 case ENCODING_RM_CD8: \ 340 case ENCODING_RM_CD16: \ 341 case ENCODING_RM_CD32: \ 342 case ENCODING_RM_CD64 343 344 #define CASE_ENCODING_VSIB \ 345 case ENCODING_VSIB: \ 346 case ENCODING_VSIB_CD2: \ 347 case ENCODING_VSIB_CD4: \ 348 case ENCODING_VSIB_CD8: \ 349 case ENCODING_VSIB_CD16: \ 350 case ENCODING_VSIB_CD32: \ 351 case ENCODING_VSIB_CD64 352 353 // Physical encodings of instruction operands. 354 #define ENCODINGS \ 355 ENUM_ENTRY(ENCODING_NONE, "") \ 356 ENUM_ENTRY(ENCODING_REG, "Register operand in ModR/M byte.") \ 357 ENUM_ENTRY(ENCODING_RM, "R/M operand in ModR/M byte.") \ 358 ENUM_ENTRY(ENCODING_RM_CD2, "R/M operand with CDisp scaling of 2") \ 359 ENUM_ENTRY(ENCODING_RM_CD4, "R/M operand with CDisp scaling of 4") \ 360 ENUM_ENTRY(ENCODING_RM_CD8, "R/M operand with CDisp scaling of 8") \ 361 ENUM_ENTRY(ENCODING_RM_CD16,"R/M operand with CDisp scaling of 16") \ 362 ENUM_ENTRY(ENCODING_RM_CD32,"R/M operand with CDisp scaling of 32") \ 363 ENUM_ENTRY(ENCODING_RM_CD64,"R/M operand with CDisp scaling of 64") \ 364 ENUM_ENTRY(ENCODING_SIB, "Force SIB operand in ModR/M byte.") \ 365 ENUM_ENTRY(ENCODING_VSIB, "VSIB operand in ModR/M byte.") \ 366 ENUM_ENTRY(ENCODING_VSIB_CD2, "VSIB operand with CDisp scaling of 2") \ 367 ENUM_ENTRY(ENCODING_VSIB_CD4, "VSIB operand with CDisp scaling of 4") \ 368 ENUM_ENTRY(ENCODING_VSIB_CD8, "VSIB operand with CDisp scaling of 8") \ 369 ENUM_ENTRY(ENCODING_VSIB_CD16,"VSIB operand with CDisp scaling of 16") \ 370 ENUM_ENTRY(ENCODING_VSIB_CD32,"VSIB operand with CDisp scaling of 32") \ 371 ENUM_ENTRY(ENCODING_VSIB_CD64,"VSIB operand with CDisp scaling of 64") \ 372 ENUM_ENTRY(ENCODING_VVVV, "Register operand in VEX.vvvv byte.") \ 373 ENUM_ENTRY(ENCODING_WRITEMASK, "Register operand in EVEX.aaa byte.") \ 374 ENUM_ENTRY(ENCODING_IB, "1-byte immediate") \ 375 ENUM_ENTRY(ENCODING_IW, "2-byte") \ 376 ENUM_ENTRY(ENCODING_ID, "4-byte") \ 377 ENUM_ENTRY(ENCODING_IO, "8-byte") \ 378 ENUM_ENTRY(ENCODING_RB, "(AL..DIL, R8B..R15B) Register code added to " \ 379 "the opcode byte") \ 380 ENUM_ENTRY(ENCODING_RW, "(AX..DI, R8W..R15W)") \ 381 ENUM_ENTRY(ENCODING_RD, "(EAX..EDI, R8D..R15D)") \ 382 ENUM_ENTRY(ENCODING_RO, "(RAX..RDI, R8..R15)") \ 383 ENUM_ENTRY(ENCODING_FP, "Position on floating-point stack in ModR/M " \ 384 "byte.") \ 385 \ 386 ENUM_ENTRY(ENCODING_Iv, "Immediate of operand size") \ 387 ENUM_ENTRY(ENCODING_Ia, "Immediate of address size") \ 388 ENUM_ENTRY(ENCODING_IRC, "Immediate for static rounding control") \ 389 ENUM_ENTRY(ENCODING_Rv, "Register code of operand size added to the " \ 390 "opcode byte") \ 391 ENUM_ENTRY(ENCODING_CC, "Condition code encoded in opcode") \ 392 ENUM_ENTRY(ENCODING_DUP, "Duplicate of another operand; ID is encoded " \ 393 "in type") \ 394 ENUM_ENTRY(ENCODING_SI, "Source index; encoded in OpSize/Adsize prefix") \ 395 ENUM_ENTRY(ENCODING_DI, "Destination index; encoded in prefixes") 396 397 #define ENUM_ENTRY(n, d) n, 398 enum OperandEncoding { 399 ENCODINGS 400 ENCODING_max 401 }; 402 #undef ENUM_ENTRY 403 404 // Semantic interpretations of instruction operands. 405 #define TYPES \ 406 ENUM_ENTRY(TYPE_NONE, "") \ 407 ENUM_ENTRY(TYPE_REL, "immediate address") \ 408 ENUM_ENTRY(TYPE_R8, "1-byte register operand") \ 409 ENUM_ENTRY(TYPE_R16, "2-byte") \ 410 ENUM_ENTRY(TYPE_R32, "4-byte") \ 411 ENUM_ENTRY(TYPE_R64, "8-byte") \ 412 ENUM_ENTRY(TYPE_IMM, "immediate operand") \ 413 ENUM_ENTRY(TYPE_UIMM8, "1-byte unsigned immediate operand") \ 414 ENUM_ENTRY(TYPE_M, "Memory operand") \ 415 ENUM_ENTRY(TYPE_MSIB, "Memory operand force sib encoding") \ 416 ENUM_ENTRY(TYPE_MVSIBX, "Memory operand using XMM index") \ 417 ENUM_ENTRY(TYPE_MVSIBY, "Memory operand using YMM index") \ 418 ENUM_ENTRY(TYPE_MVSIBZ, "Memory operand using ZMM index") \ 419 ENUM_ENTRY(TYPE_SRCIDX, "memory at source index") \ 420 ENUM_ENTRY(TYPE_DSTIDX, "memory at destination index") \ 421 ENUM_ENTRY(TYPE_MOFFS, "memory offset (relative to segment base)") \ 422 ENUM_ENTRY(TYPE_ST, "Position on the floating-point stack") \ 423 ENUM_ENTRY(TYPE_MM64, "8-byte MMX register") \ 424 ENUM_ENTRY(TYPE_XMM, "16-byte") \ 425 ENUM_ENTRY(TYPE_YMM, "32-byte") \ 426 ENUM_ENTRY(TYPE_ZMM, "64-byte") \ 427 ENUM_ENTRY(TYPE_VK, "mask register") \ 428 ENUM_ENTRY(TYPE_VK_PAIR, "mask register pair") \ 429 ENUM_ENTRY(TYPE_TMM, "tile") \ 430 ENUM_ENTRY(TYPE_SEGMENTREG, "Segment register operand") \ 431 ENUM_ENTRY(TYPE_DEBUGREG, "Debug register operand") \ 432 ENUM_ENTRY(TYPE_CONTROLREG, "Control register operand") \ 433 ENUM_ENTRY(TYPE_BNDR, "MPX bounds register") \ 434 \ 435 ENUM_ENTRY(TYPE_Rv, "Register operand of operand size") \ 436 ENUM_ENTRY(TYPE_RELv, "Immediate address of operand size") \ 437 ENUM_ENTRY(TYPE_DUP0, "Duplicate of operand 0") \ 438 ENUM_ENTRY(TYPE_DUP1, "operand 1") \ 439 ENUM_ENTRY(TYPE_DUP2, "operand 2") \ 440 ENUM_ENTRY(TYPE_DUP3, "operand 3") \ 441 ENUM_ENTRY(TYPE_DUP4, "operand 4") \ 442 443 #define ENUM_ENTRY(n, d) n, 444 enum OperandType { 445 TYPES 446 TYPE_max 447 }; 448 #undef ENUM_ENTRY 449 450 /// The specification for how to extract and interpret one operand. 451 struct OperandSpecifier { 452 uint8_t encoding; 453 uint8_t type; 454 }; 455 456 static const unsigned X86_MAX_OPERANDS = 6; 457 458 /// Decoding mode for the Intel disassembler. 16-bit, 32-bit, and 64-bit mode 459 /// are supported, and represent real mode, IA-32e, and IA-32e in 64-bit mode, 460 /// respectively. 461 enum DisassemblerMode { 462 MODE_16BIT, 463 MODE_32BIT, 464 MODE_64BIT 465 }; 466 467 } // namespace X86Disassembler 468 } // namespace llvm 469 470 #endif 471
Indexes created Tue Jun 09 00:24:00 UTC 2026