X86DisassemblerDecoderCommon.h revision 263508
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/* 18 * This header file provides those definitions that need to be shared between 19 * the decoder and the table generator in a C-friendly manner. 20 */ 21 22#ifndef X86DISASSEMBLERDECODERCOMMON_H 23#define X86DISASSEMBLERDECODERCOMMON_H 24 25#include "llvm/Support/DataTypes.h" 26 27#define INSTRUCTIONS_SYM x86DisassemblerInstrSpecifiers 28#define CONTEXTS_SYM x86DisassemblerContexts 29#define ONEBYTE_SYM x86DisassemblerOneByteOpcodes 30#define TWOBYTE_SYM x86DisassemblerTwoByteOpcodes 31#define THREEBYTE38_SYM x86DisassemblerThreeByte38Opcodes 32#define THREEBYTE3A_SYM x86DisassemblerThreeByte3AOpcodes 33#define THREEBYTEA6_SYM x86DisassemblerThreeByteA6Opcodes 34#define THREEBYTEA7_SYM x86DisassemblerThreeByteA7Opcodes 35#define XOP8_MAP_SYM x86DisassemblerXOP8Opcodes 36#define XOP9_MAP_SYM x86DisassemblerXOP9Opcodes 37#define XOPA_MAP_SYM x86DisassemblerXOPAOpcodes 38 39#define INSTRUCTIONS_STR "x86DisassemblerInstrSpecifiers" 40#define CONTEXTS_STR "x86DisassemblerContexts" 41#define ONEBYTE_STR "x86DisassemblerOneByteOpcodes" 42#define TWOBYTE_STR "x86DisassemblerTwoByteOpcodes" 43#define THREEBYTE38_STR "x86DisassemblerThreeByte38Opcodes" 44#define THREEBYTE3A_STR "x86DisassemblerThreeByte3AOpcodes" 45#define THREEBYTEA6_STR "x86DisassemblerThreeByteA6Opcodes" 46#define THREEBYTEA7_STR "x86DisassemblerThreeByteA7Opcodes" 47#define XOP8_MAP_STR "x86DisassemblerXOP8Opcodes" 48#define XOP9_MAP_STR "x86DisassemblerXOP9Opcodes" 49#define XOPA_MAP_STR "x86DisassemblerXOPAOpcodes" 50 51/* 52 * Attributes of an instruction that must be known before the opcode can be 53 * processed correctly. Most of these indicate the presence of particular 54 * prefixes, but ATTR_64BIT is simply an attribute of the decoding context. 55 */ 56#define ATTRIBUTE_BITS \ 57 ENUM_ENTRY(ATTR_NONE, 0x00) \ 58 ENUM_ENTRY(ATTR_64BIT, 0x01) \ 59 ENUM_ENTRY(ATTR_XS, 0x02) \ 60 ENUM_ENTRY(ATTR_XD, 0x04) \ 61 ENUM_ENTRY(ATTR_REXW, 0x08) \ 62 ENUM_ENTRY(ATTR_OPSIZE, 0x10) \ 63 ENUM_ENTRY(ATTR_ADSIZE, 0x20) \ 64 ENUM_ENTRY(ATTR_VEX, 0x40) \ 65 ENUM_ENTRY(ATTR_VEXL, 0x80) 66 67#define ENUM_ENTRY(n, v) n = v, 68enum attributeBits { 69 ATTRIBUTE_BITS 70 ATTR_max 71}; 72#undef ENUM_ENTRY 73 74/* 75 * Combinations of the above attributes that are relevant to instruction 76 * decode. Although other combinations are possible, they can be reduced to 77 * these without affecting the ultimately decoded instruction. 78 */ 79 80/* Class name Rank Rationale for rank assignment */ 81#define INSTRUCTION_CONTEXTS \ 82 ENUM_ENTRY(IC, 0, "says nothing about the instruction") \ 83 ENUM_ENTRY(IC_64BIT, 1, "says the instruction applies in " \ 84 "64-bit mode but no more") \ 85 ENUM_ENTRY(IC_OPSIZE, 3, "requires an OPSIZE prefix, so " \ 86 "operands change width") \ 87 ENUM_ENTRY(IC_ADSIZE, 3, "requires an ADSIZE prefix, so " \ 88 "operands change width") \ 89 ENUM_ENTRY(IC_XD, 2, "may say something about the opcode " \ 90 "but not the operands") \ 91 ENUM_ENTRY(IC_XS, 2, "may say something about the opcode " \ 92 "but not the operands") \ 93 ENUM_ENTRY(IC_XD_OPSIZE, 3, "requires an OPSIZE prefix, so " \ 94 "operands change width") \ 95 ENUM_ENTRY(IC_XS_OPSIZE, 3, "requires an OPSIZE prefix, so " \ 96 "operands change width") \ 97 ENUM_ENTRY(IC_64BIT_REXW, 4, "requires a REX.W prefix, so operands "\ 98 "change width; overrides IC_OPSIZE") \ 99 ENUM_ENTRY(IC_64BIT_OPSIZE, 3, "Just as meaningful as IC_OPSIZE") \ 100 ENUM_ENTRY(IC_64BIT_ADSIZE, 3, "Just as meaningful as IC_ADSIZE") \ 101 ENUM_ENTRY(IC_64BIT_XD, 5, "XD instructions are SSE; REX.W is " \ 102 "secondary") \ 103 ENUM_ENTRY(IC_64BIT_XS, 5, "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_REXW_XS, 6, "OPSIZE could mean a different " \ 107 "opcode") \ 108 ENUM_ENTRY(IC_64BIT_REXW_XD, 6, "Just as meaningful as " \ 109 "IC_64BIT_REXW_XS") \ 110 ENUM_ENTRY(IC_64BIT_REXW_OPSIZE, 7, "The Dynamic Duo! Prefer over all " \ 111 "else because this changes most " \ 112 "operands' meaning") \ 113 ENUM_ENTRY(IC_VEX, 1, "requires a VEX prefix") \ 114 ENUM_ENTRY(IC_VEX_XS, 2, "requires VEX and the XS prefix") \ 115 ENUM_ENTRY(IC_VEX_XD, 2, "requires VEX and the XD prefix") \ 116 ENUM_ENTRY(IC_VEX_OPSIZE, 2, "requires VEX and the OpSize prefix") \ 117 ENUM_ENTRY(IC_VEX_W, 3, "requires VEX and the W prefix") \ 118 ENUM_ENTRY(IC_VEX_W_XS, 4, "requires VEX, W, and XS prefix") \ 119 ENUM_ENTRY(IC_VEX_W_XD, 4, "requires VEX, W, and XD prefix") \ 120 ENUM_ENTRY(IC_VEX_W_OPSIZE, 4, "requires VEX, W, and OpSize") \ 121 ENUM_ENTRY(IC_VEX_L, 3, "requires VEX and the L prefix") \ 122 ENUM_ENTRY(IC_VEX_L_XS, 4, "requires VEX and the L and XS prefix")\ 123 ENUM_ENTRY(IC_VEX_L_XD, 4, "requires VEX and the L and XD prefix")\ 124 ENUM_ENTRY(IC_VEX_L_OPSIZE, 4, "requires VEX, L, and OpSize") \ 125 ENUM_ENTRY(IC_VEX_L_W, 4, "requires VEX, L and W") \ 126 ENUM_ENTRY(IC_VEX_L_W_XS, 5, "requires VEX, L, W and XS prefix") \ 127 ENUM_ENTRY(IC_VEX_L_W_XD, 5, "requires VEX, L, W and XD prefix") \ 128 ENUM_ENTRY(IC_VEX_L_W_OPSIZE, 5, "requires VEX, L, W and OpSize") \ 129 ENUM_ENTRY(IC_EVEX, 1, "requires an EVEX prefix") \ 130 ENUM_ENTRY(IC_EVEX_XS, 2, "requires EVEX and the XS prefix") \ 131 ENUM_ENTRY(IC_EVEX_XD, 2, "requires EVEX and the XD prefix") \ 132 ENUM_ENTRY(IC_EVEX_OPSIZE, 2, "requires EVEX and the OpSize prefix") \ 133 ENUM_ENTRY(IC_EVEX_W, 3, "requires EVEX and the W prefix") \ 134 ENUM_ENTRY(IC_EVEX_W_XS, 4, "requires EVEX, W, and XS prefix") \ 135 ENUM_ENTRY(IC_EVEX_W_XD, 4, "requires EVEX, W, and XD prefix") \ 136 ENUM_ENTRY(IC_EVEX_W_OPSIZE, 4, "requires EVEX, W, and OpSize") \ 137 ENUM_ENTRY(IC_EVEX_L, 3, "requires EVEX and the L prefix") \ 138 ENUM_ENTRY(IC_EVEX_L_XS, 4, "requires EVEX and the L and XS prefix")\ 139 ENUM_ENTRY(IC_EVEX_L_XD, 4, "requires EVEX and the L and XD prefix")\ 140 ENUM_ENTRY(IC_EVEX_L_OPSIZE, 4, "requires EVEX, L, and OpSize") \ 141 ENUM_ENTRY(IC_EVEX_L_W, 3, "requires EVEX, L and W") \ 142 ENUM_ENTRY(IC_EVEX_L_W_XS, 4, "requires EVEX, L, W and XS prefix") \ 143 ENUM_ENTRY(IC_EVEX_L_W_XD, 4, "requires EVEX, L, W and XD prefix") \ 144 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE, 4, "requires EVEX, L, W and OpSize") \ 145 ENUM_ENTRY(IC_EVEX_L2, 3, "requires EVEX and the L2 prefix") \ 146 ENUM_ENTRY(IC_EVEX_L2_XS, 4, "requires EVEX and the L2 and XS prefix")\ 147 ENUM_ENTRY(IC_EVEX_L2_XD, 4, "requires EVEX and the L2 and XD prefix")\ 148 ENUM_ENTRY(IC_EVEX_L2_OPSIZE, 4, "requires EVEX, L2, and OpSize") \ 149 ENUM_ENTRY(IC_EVEX_L2_W, 3, "requires EVEX, L2 and W") \ 150 ENUM_ENTRY(IC_EVEX_L2_W_XS, 4, "requires EVEX, L2, W and XS prefix") \ 151 ENUM_ENTRY(IC_EVEX_L2_W_XD, 4, "requires EVEX, L2, W and XD prefix") \ 152 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE, 4, "requires EVEX, L2, W and OpSize") \ 153 ENUM_ENTRY(IC_EVEX_K, 1, "requires an EVEX_K prefix") \ 154 ENUM_ENTRY(IC_EVEX_XS_K, 2, "requires EVEX_K and the XS prefix") \ 155 ENUM_ENTRY(IC_EVEX_XD_K, 2, "requires EVEX_K and the XD prefix") \ 156 ENUM_ENTRY(IC_EVEX_OPSIZE_K, 2, "requires EVEX_K and the OpSize prefix") \ 157 ENUM_ENTRY(IC_EVEX_W_K, 3, "requires EVEX_K and the W prefix") \ 158 ENUM_ENTRY(IC_EVEX_W_XS_K, 4, "requires EVEX_K, W, and XS prefix") \ 159 ENUM_ENTRY(IC_EVEX_W_XD_K, 4, "requires EVEX_K, W, and XD prefix") \ 160 ENUM_ENTRY(IC_EVEX_W_OPSIZE_K, 4, "requires EVEX_K, W, and OpSize") \ 161 ENUM_ENTRY(IC_EVEX_L_K, 3, "requires EVEX_K and the L prefix") \ 162 ENUM_ENTRY(IC_EVEX_L_XS_K, 4, "requires EVEX_K and the L and XS prefix")\ 163 ENUM_ENTRY(IC_EVEX_L_XD_K, 4, "requires EVEX_K and the L and XD prefix")\ 164 ENUM_ENTRY(IC_EVEX_L_OPSIZE_K, 4, "requires EVEX_K, L, and OpSize") \ 165 ENUM_ENTRY(IC_EVEX_L_W_K, 3, "requires EVEX_K, L and W") \ 166 ENUM_ENTRY(IC_EVEX_L_W_XS_K, 4, "requires EVEX_K, L, W and XS prefix") \ 167 ENUM_ENTRY(IC_EVEX_L_W_XD_K, 4, "requires EVEX_K, L, W and XD prefix") \ 168 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_K, 4, "requires EVEX_K, L, W and OpSize") \ 169 ENUM_ENTRY(IC_EVEX_L2_K, 3, "requires EVEX_K and the L2 prefix") \ 170 ENUM_ENTRY(IC_EVEX_L2_XS_K, 4, "requires EVEX_K and the L2 and XS prefix")\ 171 ENUM_ENTRY(IC_EVEX_L2_XD_K, 4, "requires EVEX_K and the L2 and XD prefix")\ 172 ENUM_ENTRY(IC_EVEX_L2_OPSIZE_K, 4, "requires EVEX_K, L2, and OpSize") \ 173 ENUM_ENTRY(IC_EVEX_L2_W_K, 3, "requires EVEX_K, L2 and W") \ 174 ENUM_ENTRY(IC_EVEX_L2_W_XS_K, 4, "requires EVEX_K, L2, W and XS prefix") \ 175 ENUM_ENTRY(IC_EVEX_L2_W_XD_K, 4, "requires EVEX_K, L2, W and XD prefix") \ 176 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_K, 4, "requires EVEX_K, L2, W and OpSize") \ 177 ENUM_ENTRY(IC_EVEX_B, 1, "requires an EVEX_B prefix") \ 178 ENUM_ENTRY(IC_EVEX_XS_B, 2, "requires EVEX_B and the XS prefix") \ 179 ENUM_ENTRY(IC_EVEX_XD_B, 2, "requires EVEX_B and the XD prefix") \ 180 ENUM_ENTRY(IC_EVEX_OPSIZE_B, 2, "requires EVEX_B and the OpSize prefix") \ 181 ENUM_ENTRY(IC_EVEX_W_B, 3, "requires EVEX_B and the W prefix") \ 182 ENUM_ENTRY(IC_EVEX_W_XS_B, 4, "requires EVEX_B, W, and XS prefix") \ 183 ENUM_ENTRY(IC_EVEX_W_XD_B, 4, "requires EVEX_B, W, and XD prefix") \ 184 ENUM_ENTRY(IC_EVEX_W_OPSIZE_B, 4, "requires EVEX_B, W, and OpSize") \ 185 ENUM_ENTRY(IC_EVEX_L_B, 3, "requires EVEX_B and the L prefix") \ 186 ENUM_ENTRY(IC_EVEX_L_XS_B, 4, "requires EVEX_B and the L and XS prefix")\ 187 ENUM_ENTRY(IC_EVEX_L_XD_B, 4, "requires EVEX_B and the L and XD prefix")\ 188 ENUM_ENTRY(IC_EVEX_L_OPSIZE_B, 4, "requires EVEX_B, L, and OpSize") \ 189 ENUM_ENTRY(IC_EVEX_L_W_B, 3, "requires EVEX_B, L and W") \ 190 ENUM_ENTRY(IC_EVEX_L_W_XS_B, 4, "requires EVEX_B, L, W and XS prefix") \ 191 ENUM_ENTRY(IC_EVEX_L_W_XD_B, 4, "requires EVEX_B, L, W and XD prefix") \ 192 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_B, 4, "requires EVEX_B, L, W and OpSize") \ 193 ENUM_ENTRY(IC_EVEX_L2_B, 3, "requires EVEX_B and the L2 prefix") \ 194 ENUM_ENTRY(IC_EVEX_L2_XS_B, 4, "requires EVEX_B and the L2 and XS prefix")\ 195 ENUM_ENTRY(IC_EVEX_L2_XD_B, 4, "requires EVEX_B and the L2 and XD prefix")\ 196 ENUM_ENTRY(IC_EVEX_L2_OPSIZE_B, 4, "requires EVEX_B, L2, and OpSize") \ 197 ENUM_ENTRY(IC_EVEX_L2_W_B, 3, "requires EVEX_B, L2 and W") \ 198 ENUM_ENTRY(IC_EVEX_L2_W_XS_B, 4, "requires EVEX_B, L2, W and XS prefix") \ 199 ENUM_ENTRY(IC_EVEX_L2_W_XD_B, 4, "requires EVEX_B, L2, W and XD prefix") \ 200 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_B, 4, "requires EVEX_B, L2, W and OpSize") \ 201 ENUM_ENTRY(IC_EVEX_K_B, 1, "requires EVEX_B and EVEX_K prefix") \ 202 ENUM_ENTRY(IC_EVEX_XS_K_B, 2, "requires EVEX_B, EVEX_K and the XS prefix") \ 203 ENUM_ENTRY(IC_EVEX_XD_K_B, 2, "requires EVEX_B, EVEX_K and the XD prefix") \ 204 ENUM_ENTRY(IC_EVEX_OPSIZE_K_B, 2, "requires EVEX_B, EVEX_K and the OpSize prefix") \ 205 ENUM_ENTRY(IC_EVEX_W_K_B, 3, "requires EVEX_B, EVEX_K and the W prefix") \ 206 ENUM_ENTRY(IC_EVEX_W_XS_K_B, 4, "requires EVEX_B, EVEX_K, W, and XS prefix") \ 207 ENUM_ENTRY(IC_EVEX_W_XD_K_B, 4, "requires EVEX_B, EVEX_K, W, and XD prefix") \ 208 ENUM_ENTRY(IC_EVEX_W_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, W, and OpSize") \ 209 ENUM_ENTRY(IC_EVEX_L_K_B, 3, "requires EVEX_B, EVEX_K and the L prefix") \ 210 ENUM_ENTRY(IC_EVEX_L_XS_K_B, 4, "requires EVEX_B, EVEX_K and the L and XS prefix")\ 211 ENUM_ENTRY(IC_EVEX_L_XD_K_B, 4, "requires EVEX_B, EVEX_K and the L and XD prefix")\ 212 ENUM_ENTRY(IC_EVEX_L_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, L, and OpSize") \ 213 ENUM_ENTRY(IC_EVEX_L_W_K_B, 3, "requires EVEX_B, EVEX_K, L and W") \ 214 ENUM_ENTRY(IC_EVEX_L_W_XS_K_B, 4, "requires EVEX_B, EVEX_K, L, W and XS prefix") \ 215 ENUM_ENTRY(IC_EVEX_L_W_XD_K_B, 4, "requires EVEX_B, EVEX_K, L, W and XD prefix") \ 216 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, L, W and OpSize") \ 217 ENUM_ENTRY(IC_EVEX_L2_K_B, 3, "requires EVEX_B, EVEX_K and the L2 prefix") \ 218 ENUM_ENTRY(IC_EVEX_L2_XS_K_B, 4, "requires EVEX_B, EVEX_K and the L2 and XS prefix")\ 219 ENUM_ENTRY(IC_EVEX_L2_XD_K_B, 4, "requires EVEX_B, EVEX_K and the L2 and XD prefix")\ 220 ENUM_ENTRY(IC_EVEX_L2_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, L2, and OpSize") \ 221 ENUM_ENTRY(IC_EVEX_L2_W_K_B, 3, "requires EVEX_B, EVEX_K, L2 and W") \ 222 ENUM_ENTRY(IC_EVEX_L2_W_XS_K_B, 4, "requires EVEX_B, EVEX_K, L2, W and XS prefix") \ 223 ENUM_ENTRY(IC_EVEX_L2_W_XD_K_B, 4, "requires EVEX_B, EVEX_K, L2, W and XD prefix") \ 224 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, L2, W and OpSize") \ 225 ENUM_ENTRY(IC_EVEX_KZ_B, 1, "requires EVEX_B and EVEX_KZ prefix") \ 226 ENUM_ENTRY(IC_EVEX_XS_KZ_B, 2, "requires EVEX_B, EVEX_KZ and the XS prefix") \ 227 ENUM_ENTRY(IC_EVEX_XD_KZ_B, 2, "requires EVEX_B, EVEX_KZ and the XD prefix") \ 228 ENUM_ENTRY(IC_EVEX_OPSIZE_KZ_B, 2, "requires EVEX_B, EVEX_KZ and the OpSize prefix") \ 229 ENUM_ENTRY(IC_EVEX_W_KZ_B, 3, "requires EVEX_B, EVEX_KZ and the W prefix") \ 230 ENUM_ENTRY(IC_EVEX_W_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ, W, and XS prefix") \ 231 ENUM_ENTRY(IC_EVEX_W_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ, W, and XD prefix") \ 232 ENUM_ENTRY(IC_EVEX_W_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, W, and OpSize") \ 233 ENUM_ENTRY(IC_EVEX_L_KZ_B, 3, "requires EVEX_B, EVEX_KZ and the L prefix") \ 234 ENUM_ENTRY(IC_EVEX_L_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L and XS prefix")\ 235 ENUM_ENTRY(IC_EVEX_L_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L and XD prefix")\ 236 ENUM_ENTRY(IC_EVEX_L_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, and OpSize") \ 237 ENUM_ENTRY(IC_EVEX_L_W_KZ_B, 3, "requires EVEX_B, EVEX_KZ, L and W") \ 238 ENUM_ENTRY(IC_EVEX_L_W_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, W and XS prefix") \ 239 ENUM_ENTRY(IC_EVEX_L_W_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, W and XD prefix") \ 240 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, W and OpSize") \ 241 ENUM_ENTRY(IC_EVEX_L2_KZ_B, 3, "requires EVEX_B, EVEX_KZ and the L2 prefix") \ 242 ENUM_ENTRY(IC_EVEX_L2_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L2 and XS prefix")\ 243 ENUM_ENTRY(IC_EVEX_L2_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L2 and XD prefix")\ 244 ENUM_ENTRY(IC_EVEX_L2_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, and OpSize") \ 245 ENUM_ENTRY(IC_EVEX_L2_W_KZ_B, 3, "requires EVEX_B, EVEX_KZ, L2 and W") \ 246 ENUM_ENTRY(IC_EVEX_L2_W_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, W and XS prefix") \ 247 ENUM_ENTRY(IC_EVEX_L2_W_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, W and XD prefix") \ 248 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, W and OpSize") \ 249 ENUM_ENTRY(IC_EVEX_KZ, 1, "requires an EVEX_KZ prefix") \ 250 ENUM_ENTRY(IC_EVEX_XS_KZ, 2, "requires EVEX_KZ and the XS prefix") \ 251 ENUM_ENTRY(IC_EVEX_XD_KZ, 2, "requires EVEX_KZ and the XD prefix") \ 252 ENUM_ENTRY(IC_EVEX_OPSIZE_KZ, 2, "requires EVEX_KZ and the OpSize prefix") \ 253 ENUM_ENTRY(IC_EVEX_W_KZ, 3, "requires EVEX_KZ and the W prefix") \ 254 ENUM_ENTRY(IC_EVEX_W_XS_KZ, 4, "requires EVEX_KZ, W, and XS prefix") \ 255 ENUM_ENTRY(IC_EVEX_W_XD_KZ, 4, "requires EVEX_KZ, W, and XD prefix") \ 256 ENUM_ENTRY(IC_EVEX_W_OPSIZE_KZ, 4, "requires EVEX_KZ, W, and OpSize") \ 257 ENUM_ENTRY(IC_EVEX_L_KZ, 3, "requires EVEX_KZ and the L prefix") \ 258 ENUM_ENTRY(IC_EVEX_L_XS_KZ, 4, "requires EVEX_KZ and the L and XS prefix")\ 259 ENUM_ENTRY(IC_EVEX_L_XD_KZ, 4, "requires EVEX_KZ and the L and XD prefix")\ 260 ENUM_ENTRY(IC_EVEX_L_OPSIZE_KZ, 4, "requires EVEX_KZ, L, and OpSize") \ 261 ENUM_ENTRY(IC_EVEX_L_W_KZ, 3, "requires EVEX_KZ, L and W") \ 262 ENUM_ENTRY(IC_EVEX_L_W_XS_KZ, 4, "requires EVEX_KZ, L, W and XS prefix") \ 263 ENUM_ENTRY(IC_EVEX_L_W_XD_KZ, 4, "requires EVEX_KZ, L, W and XD prefix") \ 264 ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_KZ, 4, "requires EVEX_KZ, L, W and OpSize") \ 265 ENUM_ENTRY(IC_EVEX_L2_KZ, 3, "requires EVEX_KZ and the L2 prefix") \ 266 ENUM_ENTRY(IC_EVEX_L2_XS_KZ, 4, "requires EVEX_KZ and the L2 and XS prefix")\ 267 ENUM_ENTRY(IC_EVEX_L2_XD_KZ, 4, "requires EVEX_KZ and the L2 and XD prefix")\ 268 ENUM_ENTRY(IC_EVEX_L2_OPSIZE_KZ, 4, "requires EVEX_KZ, L2, and OpSize") \ 269 ENUM_ENTRY(IC_EVEX_L2_W_KZ, 3, "requires EVEX_KZ, L2 and W") \ 270 ENUM_ENTRY(IC_EVEX_L2_W_XS_KZ, 4, "requires EVEX_KZ, L2, W and XS prefix") \ 271 ENUM_ENTRY(IC_EVEX_L2_W_XD_KZ, 4, "requires EVEX_KZ, L2, W and XD prefix") \ 272 ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_KZ, 4, "requires EVEX_KZ, L2, W and OpSize") 273 274#define ENUM_ENTRY(n, r, d) n, 275typedef enum { 276 INSTRUCTION_CONTEXTS 277 IC_max 278} InstructionContext; 279#undef ENUM_ENTRY 280 281/* 282 * Opcode types, which determine which decode table to use, both in the Intel 283 * manual and also for the decoder. 284 */ 285typedef enum { 286 ONEBYTE = 0, 287 TWOBYTE = 1, 288 THREEBYTE_38 = 2, 289 THREEBYTE_3A = 3, 290 THREEBYTE_A6 = 4, 291 THREEBYTE_A7 = 5, 292 XOP8_MAP = 6, 293 XOP9_MAP = 7, 294 XOPA_MAP = 8 295} OpcodeType; 296 297/* 298 * The following structs are used for the hierarchical decode table. After 299 * determining the instruction's class (i.e., which IC_* constant applies to 300 * it), the decoder reads the opcode. Some instructions require specific 301 * values of the ModR/M byte, so the ModR/M byte indexes into the final table. 302 * 303 * If a ModR/M byte is not required, "required" is left unset, and the values 304 * for each instructionID are identical. 305 */ 306 307typedef uint16_t InstrUID; 308 309/* 310 * ModRMDecisionType - describes the type of ModR/M decision, allowing the 311 * consumer to determine the number of entries in it. 312 * 313 * MODRM_ONEENTRY - No matter what the value of the ModR/M byte is, the decoded 314 * instruction is the same. 315 * MODRM_SPLITRM - If the ModR/M byte is between 0x00 and 0xbf, the opcode 316 * corresponds to one instruction; otherwise, it corresponds to 317 * a different instruction. 318 * MODRM_SPLITMISC- If the ModR/M byte is between 0x00 and 0xbf, ModR/M byte 319 * divided by 8 is used to select instruction; otherwise, each 320 * value of the ModR/M byte could correspond to a different 321 * instruction. 322 * MODRM_SPLITREG - ModR/M byte divided by 8 is used to select instruction. This 323 corresponds to instructions that use reg field as opcode 324 * MODRM_FULL - Potentially, each value of the ModR/M byte could correspond 325 * to a different instruction. 326 */ 327 328#define MODRMTYPES \ 329 ENUM_ENTRY(MODRM_ONEENTRY) \ 330 ENUM_ENTRY(MODRM_SPLITRM) \ 331 ENUM_ENTRY(MODRM_SPLITMISC) \ 332 ENUM_ENTRY(MODRM_SPLITREG) \ 333 ENUM_ENTRY(MODRM_FULL) 334 335#define ENUM_ENTRY(n) n, 336typedef enum { 337 MODRMTYPES 338 MODRM_max 339} ModRMDecisionType; 340#undef ENUM_ENTRY 341 342/* 343 * ModRMDecision - Specifies whether a ModR/M byte is needed and (if so) which 344 * instruction each possible value of the ModR/M byte corresponds to. Once 345 * this information is known, we have narrowed down to a single instruction. 346 */ 347struct ModRMDecision { 348 uint8_t modrm_type; 349 350 /* The macro below must be defined wherever this file is included. */ 351 INSTRUCTION_IDS 352}; 353 354/* 355 * OpcodeDecision - Specifies which set of ModR/M->instruction tables to look at 356 * given a particular opcode. 357 */ 358struct OpcodeDecision { 359 struct ModRMDecision modRMDecisions[256]; 360}; 361 362/* 363 * ContextDecision - Specifies which opcode->instruction tables to look at given 364 * a particular context (set of attributes). Since there are many possible 365 * contexts, the decoder first uses CONTEXTS_SYM to determine which context 366 * applies given a specific set of attributes. Hence there are only IC_max 367 * entries in this table, rather than 2^(ATTR_max). 368 */ 369struct ContextDecision { 370 struct OpcodeDecision opcodeDecisions[IC_max]; 371}; 372 373/* 374 * Physical encodings of instruction operands. 375 */ 376 377#define ENCODINGS \ 378 ENUM_ENTRY(ENCODING_NONE, "") \ 379 ENUM_ENTRY(ENCODING_REG, "Register operand in ModR/M byte.") \ 380 ENUM_ENTRY(ENCODING_RM, "R/M operand in ModR/M byte.") \ 381 ENUM_ENTRY(ENCODING_VVVV, "Register operand in VEX.vvvv byte.") \ 382 ENUM_ENTRY(ENCODING_WRITEMASK, "Register operand in EVEX.aaa byte.") \ 383 ENUM_ENTRY(ENCODING_CB, "1-byte code offset (possible new CS value)") \ 384 ENUM_ENTRY(ENCODING_CW, "2-byte") \ 385 ENUM_ENTRY(ENCODING_CD, "4-byte") \ 386 ENUM_ENTRY(ENCODING_CP, "6-byte") \ 387 ENUM_ENTRY(ENCODING_CO, "8-byte") \ 388 ENUM_ENTRY(ENCODING_CT, "10-byte") \ 389 ENUM_ENTRY(ENCODING_IB, "1-byte immediate") \ 390 ENUM_ENTRY(ENCODING_IW, "2-byte") \ 391 ENUM_ENTRY(ENCODING_ID, "4-byte") \ 392 ENUM_ENTRY(ENCODING_IO, "8-byte") \ 393 ENUM_ENTRY(ENCODING_RB, "(AL..DIL, R8L..R15L) Register code added to " \ 394 "the opcode byte") \ 395 ENUM_ENTRY(ENCODING_RW, "(AX..DI, R8W..R15W)") \ 396 ENUM_ENTRY(ENCODING_RD, "(EAX..EDI, R8D..R15D)") \ 397 ENUM_ENTRY(ENCODING_RO, "(RAX..RDI, R8..R15)") \ 398 ENUM_ENTRY(ENCODING_I, "Position on floating-point stack added to the " \ 399 "opcode byte") \ 400 \ 401 ENUM_ENTRY(ENCODING_Iv, "Immediate of operand size") \ 402 ENUM_ENTRY(ENCODING_Ia, "Immediate of address size") \ 403 ENUM_ENTRY(ENCODING_Rv, "Register code of operand size added to the " \ 404 "opcode byte") \ 405 ENUM_ENTRY(ENCODING_DUP, "Duplicate of another operand; ID is encoded " \ 406 "in type") 407 408#define ENUM_ENTRY(n, d) n, 409 typedef enum { 410 ENCODINGS 411 ENCODING_max 412 } OperandEncoding; 413#undef ENUM_ENTRY 414 415/* 416 * Semantic interpretations of instruction operands. 417 */ 418 419#define TYPES \ 420 ENUM_ENTRY(TYPE_NONE, "") \ 421 ENUM_ENTRY(TYPE_REL8, "1-byte immediate address") \ 422 ENUM_ENTRY(TYPE_REL16, "2-byte") \ 423 ENUM_ENTRY(TYPE_REL32, "4-byte") \ 424 ENUM_ENTRY(TYPE_REL64, "8-byte") \ 425 ENUM_ENTRY(TYPE_PTR1616, "2+2-byte segment+offset address") \ 426 ENUM_ENTRY(TYPE_PTR1632, "2+4-byte") \ 427 ENUM_ENTRY(TYPE_PTR1664, "2+8-byte") \ 428 ENUM_ENTRY(TYPE_R8, "1-byte register operand") \ 429 ENUM_ENTRY(TYPE_R16, "2-byte") \ 430 ENUM_ENTRY(TYPE_R32, "4-byte") \ 431 ENUM_ENTRY(TYPE_R64, "8-byte") \ 432 ENUM_ENTRY(TYPE_IMM8, "1-byte immediate operand") \ 433 ENUM_ENTRY(TYPE_IMM16, "2-byte") \ 434 ENUM_ENTRY(TYPE_IMM32, "4-byte") \ 435 ENUM_ENTRY(TYPE_IMM64, "8-byte") \ 436 ENUM_ENTRY(TYPE_IMM3, "1-byte immediate operand between 0 and 7") \ 437 ENUM_ENTRY(TYPE_IMM5, "1-byte immediate operand between 0 and 31") \ 438 ENUM_ENTRY(TYPE_RM8, "1-byte register or memory operand") \ 439 ENUM_ENTRY(TYPE_RM16, "2-byte") \ 440 ENUM_ENTRY(TYPE_RM32, "4-byte") \ 441 ENUM_ENTRY(TYPE_RM64, "8-byte") \ 442 ENUM_ENTRY(TYPE_M, "Memory operand") \ 443 ENUM_ENTRY(TYPE_M8, "1-byte") \ 444 ENUM_ENTRY(TYPE_M16, "2-byte") \ 445 ENUM_ENTRY(TYPE_M32, "4-byte") \ 446 ENUM_ENTRY(TYPE_M64, "8-byte") \ 447 ENUM_ENTRY(TYPE_LEA, "Effective address") \ 448 ENUM_ENTRY(TYPE_M128, "16-byte (SSE/SSE2)") \ 449 ENUM_ENTRY(TYPE_M256, "256-byte (AVX)") \ 450 ENUM_ENTRY(TYPE_M1616, "2+2-byte segment+offset address") \ 451 ENUM_ENTRY(TYPE_M1632, "2+4-byte") \ 452 ENUM_ENTRY(TYPE_M1664, "2+8-byte") \ 453 ENUM_ENTRY(TYPE_M16_32, "2+4-byte two-part memory operand (LIDT, LGDT)") \ 454 ENUM_ENTRY(TYPE_M16_16, "2+2-byte (BOUND)") \ 455 ENUM_ENTRY(TYPE_M32_32, "4+4-byte (BOUND)") \ 456 ENUM_ENTRY(TYPE_M16_64, "2+8-byte (LIDT, LGDT)") \ 457 ENUM_ENTRY(TYPE_MOFFS8, "1-byte memory offset (relative to segment " \ 458 "base)") \ 459 ENUM_ENTRY(TYPE_MOFFS16, "2-byte") \ 460 ENUM_ENTRY(TYPE_MOFFS32, "4-byte") \ 461 ENUM_ENTRY(TYPE_MOFFS64, "8-byte") \ 462 ENUM_ENTRY(TYPE_SREG, "Byte with single bit set: 0 = ES, 1 = CS, " \ 463 "2 = SS, 3 = DS, 4 = FS, 5 = GS") \ 464 ENUM_ENTRY(TYPE_M32FP, "32-bit IEE754 memory floating-point operand") \ 465 ENUM_ENTRY(TYPE_M64FP, "64-bit") \ 466 ENUM_ENTRY(TYPE_M80FP, "80-bit extended") \ 467 ENUM_ENTRY(TYPE_M16INT, "2-byte memory integer operand for use in " \ 468 "floating-point instructions") \ 469 ENUM_ENTRY(TYPE_M32INT, "4-byte") \ 470 ENUM_ENTRY(TYPE_M64INT, "8-byte") \ 471 ENUM_ENTRY(TYPE_ST, "Position on the floating-point stack") \ 472 ENUM_ENTRY(TYPE_MM, "MMX register operand") \ 473 ENUM_ENTRY(TYPE_MM32, "4-byte MMX register or memory operand") \ 474 ENUM_ENTRY(TYPE_MM64, "8-byte") \ 475 ENUM_ENTRY(TYPE_XMM, "XMM register operand") \ 476 ENUM_ENTRY(TYPE_XMM32, "4-byte XMM register or memory operand") \ 477 ENUM_ENTRY(TYPE_XMM64, "8-byte") \ 478 ENUM_ENTRY(TYPE_XMM128, "16-byte") \ 479 ENUM_ENTRY(TYPE_XMM256, "32-byte") \ 480 ENUM_ENTRY(TYPE_XMM512, "64-byte") \ 481 ENUM_ENTRY(TYPE_VK8, "8-bit") \ 482 ENUM_ENTRY(TYPE_VK16, "16-bit") \ 483 ENUM_ENTRY(TYPE_XMM0, "Implicit use of XMM0") \ 484 ENUM_ENTRY(TYPE_SEGMENTREG, "Segment register operand") \ 485 ENUM_ENTRY(TYPE_DEBUGREG, "Debug register operand") \ 486 ENUM_ENTRY(TYPE_CONTROLREG, "Control register operand") \ 487 \ 488 ENUM_ENTRY(TYPE_Mv, "Memory operand of operand size") \ 489 ENUM_ENTRY(TYPE_Rv, "Register operand of operand size") \ 490 ENUM_ENTRY(TYPE_IMMv, "Immediate operand of operand size") \ 491 ENUM_ENTRY(TYPE_RELv, "Immediate address of operand size") \ 492 ENUM_ENTRY(TYPE_DUP0, "Duplicate of operand 0") \ 493 ENUM_ENTRY(TYPE_DUP1, "operand 1") \ 494 ENUM_ENTRY(TYPE_DUP2, "operand 2") \ 495 ENUM_ENTRY(TYPE_DUP3, "operand 3") \ 496 ENUM_ENTRY(TYPE_DUP4, "operand 4") \ 497 ENUM_ENTRY(TYPE_M512, "512-bit FPU/MMX/XMM/MXCSR state") 498 499#define ENUM_ENTRY(n, d) n, 500typedef enum { 501 TYPES 502 TYPE_max 503} OperandType; 504#undef ENUM_ENTRY 505 506/* 507 * OperandSpecifier - The specification for how to extract and interpret one 508 * operand. 509 */ 510struct OperandSpecifier { 511 uint8_t encoding; 512 uint8_t type; 513}; 514 515/* 516 * Indicates where the opcode modifier (if any) is to be found. Extended 517 * opcodes with AddRegFrm have the opcode modifier in the ModR/M byte. 518 */ 519 520#define MODIFIER_TYPES \ 521 ENUM_ENTRY(MODIFIER_NONE) \ 522 ENUM_ENTRY(MODIFIER_OPCODE) \ 523 ENUM_ENTRY(MODIFIER_MODRM) 524 525#define ENUM_ENTRY(n) n, 526typedef enum { 527 MODIFIER_TYPES 528 MODIFIER_max 529} ModifierType; 530#undef ENUM_ENTRY 531 532#define X86_MAX_OPERANDS 5 533 534/* 535 * The specification for how to extract and interpret a full instruction and 536 * its operands. 537 */ 538struct InstructionSpecifier { 539 uint8_t modifierType; 540 uint8_t modifierBase; 541 542 /* The macro below must be defined wherever this file is included. */ 543 INSTRUCTION_SPECIFIER_FIELDS 544}; 545 546/* 547 * Decoding mode for the Intel disassembler. 16-bit, 32-bit, and 64-bit mode 548 * are supported, and represent real mode, IA-32e, and IA-32e in 64-bit mode, 549 * respectively. 550 */ 551typedef enum { 552 MODE_16BIT, 553 MODE_32BIT, 554 MODE_64BIT 555} DisassemblerMode; 556 557#endif 558