1 //===- X86DisassemblerTables.cpp - Disassembler tables ----------*- 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 Emitter. 10 // It contains the implementation of the disassembler tables. 11 // Documentation for the disassembler emitter in general can be found in 12 // X86DisassemblerEmitter.h. 13 // 14 //===----------------------------------------------------------------------===// 15 16 #include "X86DisassemblerTables.h" 17 #include "X86DisassemblerShared.h" 18 #include "X86ModRMFilters.h" 19 #include "llvm/ADT/STLArrayExtras.h" 20 #include "llvm/ADT/SmallVector.h" 21 #include "llvm/Support/ErrorHandling.h" 22 #include "llvm/Support/Format.h" 23 #include "llvm/Support/raw_ostream.h" 24 #include <map> 25 26 using namespace llvm; 27 using namespace X86Disassembler; 28 29 /// stringForContext - Returns a string containing the name of a particular 30 /// InstructionContext, usually for diagnostic purposes. 31 /// 32 /// @param insnContext - The instruction class to transform to a string. 33 /// @return - A statically-allocated string constant that contains the 34 /// name of the instruction class. 35 static inline const char* stringForContext(InstructionContext insnContext) { 36 switch (insnContext) { 37 default: 38 llvm_unreachable("Unhandled instruction class"); 39 #define ENUM_ENTRY(n, r, d) case n: return #n; break; 40 #define ENUM_ENTRY_K_B(n, r, d) ENUM_ENTRY(n, r, d) ENUM_ENTRY(n##_K_B, r, d)\ 41 ENUM_ENTRY(n##_KZ, r, d) ENUM_ENTRY(n##_K, r, d) ENUM_ENTRY(n##_B, r, d)\ 42 ENUM_ENTRY(n##_KZ_B, r, d) 43 INSTRUCTION_CONTEXTS 44 #undef ENUM_ENTRY 45 #undef ENUM_ENTRY_K_B 46 } 47 } 48 49 /// stringForOperandType - Like stringForContext, but for OperandTypes. 50 static inline const char* stringForOperandType(OperandType type) { 51 switch (type) { 52 default: 53 llvm_unreachable("Unhandled type"); 54 #define ENUM_ENTRY(i, d) case i: return #i; 55 TYPES 56 #undef ENUM_ENTRY 57 } 58 } 59 60 /// stringForOperandEncoding - like stringForContext, but for 61 /// OperandEncodings. 62 static inline const char* stringForOperandEncoding(OperandEncoding encoding) { 63 switch (encoding) { 64 default: 65 llvm_unreachable("Unhandled encoding"); 66 #define ENUM_ENTRY(i, d) case i: return #i; 67 ENCODINGS 68 #undef ENUM_ENTRY 69 } 70 } 71 72 /// inheritsFrom - Indicates whether all instructions in one class also belong 73 /// to another class. 74 /// 75 /// @param child - The class that may be the subset 76 /// @param parent - The class that may be the superset 77 /// @return - True if child is a subset of parent, false otherwise. 78 static inline bool inheritsFrom(InstructionContext child, 79 InstructionContext parent, bool noPrefix = true, 80 bool VEX_LIG = false, bool VEX_WIG = false, 81 bool AdSize64 = false) { 82 if (child == parent) 83 return true; 84 85 switch (parent) { 86 case IC: 87 return(inheritsFrom(child, IC_64BIT, AdSize64) || 88 (noPrefix && inheritsFrom(child, IC_OPSIZE, noPrefix)) || 89 inheritsFrom(child, IC_ADSIZE) || 90 (noPrefix && inheritsFrom(child, IC_XD, noPrefix)) || 91 (noPrefix && inheritsFrom(child, IC_XS, noPrefix))); 92 case IC_64BIT: 93 return(inheritsFrom(child, IC_64BIT_REXW) || 94 (noPrefix && inheritsFrom(child, IC_64BIT_OPSIZE, noPrefix)) || 95 (!AdSize64 && inheritsFrom(child, IC_64BIT_ADSIZE)) || 96 (noPrefix && inheritsFrom(child, IC_64BIT_XD, noPrefix)) || 97 (noPrefix && inheritsFrom(child, IC_64BIT_XS, noPrefix))); 98 case IC_OPSIZE: 99 return inheritsFrom(child, IC_64BIT_OPSIZE) || 100 inheritsFrom(child, IC_OPSIZE_ADSIZE); 101 case IC_ADSIZE: 102 return (noPrefix && inheritsFrom(child, IC_OPSIZE_ADSIZE, noPrefix)); 103 case IC_OPSIZE_ADSIZE: 104 return false; 105 case IC_64BIT_ADSIZE: 106 return (noPrefix && inheritsFrom(child, IC_64BIT_OPSIZE_ADSIZE, noPrefix)); 107 case IC_64BIT_OPSIZE_ADSIZE: 108 return (noPrefix && 109 inheritsFrom(child, IC_64BIT_VEX_OPSIZE_ADSIZE, noPrefix)); 110 case IC_XD: 111 return inheritsFrom(child, IC_64BIT_XD); 112 case IC_XS: 113 return inheritsFrom(child, IC_64BIT_XS); 114 case IC_XD_OPSIZE: 115 return inheritsFrom(child, IC_64BIT_XD_OPSIZE); 116 case IC_XS_OPSIZE: 117 return inheritsFrom(child, IC_64BIT_XS_OPSIZE); 118 case IC_XD_ADSIZE: 119 return inheritsFrom(child, IC_64BIT_XD_ADSIZE); 120 case IC_XS_ADSIZE: 121 return inheritsFrom(child, IC_64BIT_XS_ADSIZE); 122 case IC_64BIT_REXW: 123 return((noPrefix && inheritsFrom(child, IC_64BIT_REXW_XS, noPrefix)) || 124 (noPrefix && inheritsFrom(child, IC_64BIT_REXW_XD, noPrefix)) || 125 (noPrefix && inheritsFrom(child, IC_64BIT_REXW_OPSIZE, noPrefix)) || 126 (!AdSize64 && inheritsFrom(child, IC_64BIT_REXW_ADSIZE))); 127 case IC_64BIT_OPSIZE: 128 return inheritsFrom(child, IC_64BIT_REXW_OPSIZE) || 129 (!AdSize64 && inheritsFrom(child, IC_64BIT_OPSIZE_ADSIZE)) || 130 (!AdSize64 && inheritsFrom(child, IC_64BIT_REXW_ADSIZE)) || 131 (!AdSize64 && inheritsFrom(child, IC_64BIT_VEX_OPSIZE_ADSIZE)); 132 case IC_64BIT_XD: 133 return (inheritsFrom(child, IC_64BIT_REXW_XD) || 134 (!AdSize64 && inheritsFrom(child, IC_64BIT_XD_ADSIZE))); 135 case IC_64BIT_XS: 136 return(inheritsFrom(child, IC_64BIT_REXW_XS) || 137 (!AdSize64 && inheritsFrom(child, IC_64BIT_XS_ADSIZE))); 138 case IC_64BIT_XD_OPSIZE: 139 case IC_64BIT_XS_OPSIZE: 140 return false; 141 case IC_64BIT_XD_ADSIZE: 142 case IC_64BIT_XS_ADSIZE: 143 return false; 144 case IC_64BIT_REXW_XD: 145 case IC_64BIT_REXW_XS: 146 case IC_64BIT_REXW_OPSIZE: 147 case IC_64BIT_REXW_ADSIZE: 148 return false; 149 case IC_VEX: 150 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_VEX_L_W)) || 151 (VEX_WIG && inheritsFrom(child, IC_VEX_W)) || 152 (VEX_LIG && inheritsFrom(child, IC_VEX_L)); 153 case IC_VEX_XS: 154 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_VEX_L_W_XS)) || 155 (VEX_WIG && inheritsFrom(child, IC_VEX_W_XS)) || 156 (VEX_LIG && inheritsFrom(child, IC_VEX_L_XS)); 157 case IC_VEX_XD: 158 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_VEX_L_W_XD)) || 159 (VEX_WIG && inheritsFrom(child, IC_VEX_W_XD)) || 160 (VEX_LIG && inheritsFrom(child, IC_VEX_L_XD)); 161 case IC_VEX_OPSIZE: 162 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_VEX_L_W_OPSIZE)) || 163 (VEX_WIG && inheritsFrom(child, IC_VEX_W_OPSIZE)) || 164 (VEX_LIG && inheritsFrom(child, IC_VEX_L_OPSIZE)) || 165 inheritsFrom(child, IC_64BIT_VEX_OPSIZE); 166 case IC_64BIT_VEX_OPSIZE: 167 return inheritsFrom(child, IC_64BIT_VEX_OPSIZE_ADSIZE); 168 case IC_64BIT_VEX_OPSIZE_ADSIZE: 169 return false; 170 case IC_VEX_W: 171 return VEX_LIG && inheritsFrom(child, IC_VEX_L_W); 172 case IC_VEX_W_XS: 173 return VEX_LIG && inheritsFrom(child, IC_VEX_L_W_XS); 174 case IC_VEX_W_XD: 175 return VEX_LIG && inheritsFrom(child, IC_VEX_L_W_XD); 176 case IC_VEX_W_OPSIZE: 177 return VEX_LIG && inheritsFrom(child, IC_VEX_L_W_OPSIZE); 178 case IC_VEX_L: 179 return VEX_WIG && inheritsFrom(child, IC_VEX_L_W); 180 case IC_VEX_L_XS: 181 return VEX_WIG && inheritsFrom(child, IC_VEX_L_W_XS); 182 case IC_VEX_L_XD: 183 return VEX_WIG && inheritsFrom(child, IC_VEX_L_W_XD); 184 case IC_VEX_L_OPSIZE: 185 return VEX_WIG && inheritsFrom(child, IC_VEX_L_W_OPSIZE); 186 case IC_VEX_L_W: 187 case IC_VEX_L_W_XS: 188 case IC_VEX_L_W_XD: 189 case IC_VEX_L_W_OPSIZE: 190 return false; 191 case IC_EVEX: 192 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W)) || 193 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W)) || 194 (VEX_WIG && inheritsFrom(child, IC_EVEX_W)) || 195 (VEX_LIG && inheritsFrom(child, IC_EVEX_L)) || 196 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2)); 197 case IC_EVEX_XS: 198 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XS)) || 199 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XS)) || 200 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_XS)) || 201 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_XS)) || 202 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XS)); 203 case IC_EVEX_XD: 204 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XD)) || 205 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XD)) || 206 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_XD)) || 207 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_XD)) || 208 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XD)); 209 case IC_EVEX_OPSIZE: 210 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE)) || 211 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE)) || 212 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_OPSIZE)) || 213 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_OPSIZE)) || 214 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_OPSIZE)); 215 case IC_EVEX_K: 216 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_K)) || 217 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_K)) || 218 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_K)) || 219 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_K)) || 220 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_K)); 221 case IC_EVEX_XS_K: 222 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XS_K)) || 223 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_K)) || 224 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_XS_K)) || 225 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_XS_K)) || 226 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XS_K)); 227 case IC_EVEX_XD_K: 228 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XD_K)) || 229 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_K)) || 230 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_XD_K)) || 231 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_XD_K)) || 232 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XD_K)); 233 case IC_EVEX_OPSIZE_K: 234 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_K)) || 235 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_K)) || 236 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_OPSIZE_K)) || 237 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_OPSIZE_K)) || 238 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_OPSIZE_K)); 239 case IC_EVEX_KZ: 240 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_KZ)) || 241 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_KZ)) || 242 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_KZ)) || 243 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_KZ)) || 244 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_KZ)); 245 case IC_EVEX_XS_KZ: 246 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XS_KZ)) || 247 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_KZ)) || 248 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_XS_KZ)) || 249 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_XS_KZ)) || 250 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XS_KZ)); 251 case IC_EVEX_XD_KZ: 252 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XD_KZ)) || 253 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_KZ)) || 254 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_XD_KZ)) || 255 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_XD_KZ)) || 256 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XD_KZ)); 257 case IC_EVEX_OPSIZE_KZ: 258 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_KZ)) || 259 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_KZ)) || 260 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_OPSIZE_KZ)) || 261 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_OPSIZE_KZ)) || 262 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_OPSIZE_KZ)); 263 case IC_EVEX_W: 264 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W)) || 265 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W)); 266 case IC_EVEX_W_XS: 267 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XS)) || 268 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XS)); 269 case IC_EVEX_W_XD: 270 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XD)) || 271 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XD)); 272 case IC_EVEX_W_OPSIZE: 273 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE)) || 274 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE)); 275 case IC_EVEX_W_K: 276 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_K)) || 277 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_K)); 278 case IC_EVEX_W_XS_K: 279 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XS_K)) || 280 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XS_K)); 281 case IC_EVEX_W_XD_K: 282 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XD_K)) || 283 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XD_K)); 284 case IC_EVEX_W_OPSIZE_K: 285 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_K)) || 286 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_K)); 287 case IC_EVEX_W_KZ: 288 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_KZ)) || 289 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_KZ)); 290 case IC_EVEX_W_XS_KZ: 291 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XS_KZ)) || 292 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XS_KZ)); 293 case IC_EVEX_W_XD_KZ: 294 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XD_KZ)) || 295 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XD_KZ)); 296 case IC_EVEX_W_OPSIZE_KZ: 297 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_KZ)) || 298 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_KZ)); 299 case IC_EVEX_L: 300 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W); 301 case IC_EVEX_L_XS: 302 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XS); 303 case IC_EVEX_L_XD: 304 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XD); 305 case IC_EVEX_L_OPSIZE: 306 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE); 307 case IC_EVEX_L_K: 308 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_K); 309 case IC_EVEX_L_XS_K: 310 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XS_K); 311 case IC_EVEX_L_XD_K: 312 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XD_K); 313 case IC_EVEX_L_OPSIZE_K: 314 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_K); 315 case IC_EVEX_L_KZ: 316 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_KZ); 317 case IC_EVEX_L_XS_KZ: 318 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XS_KZ); 319 case IC_EVEX_L_XD_KZ: 320 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XD_KZ); 321 case IC_EVEX_L_OPSIZE_KZ: 322 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_KZ); 323 case IC_EVEX_L_W: 324 case IC_EVEX_L_W_XS: 325 case IC_EVEX_L_W_XD: 326 case IC_EVEX_L_W_OPSIZE: 327 return false; 328 case IC_EVEX_L_W_K: 329 case IC_EVEX_L_W_XS_K: 330 case IC_EVEX_L_W_XD_K: 331 case IC_EVEX_L_W_OPSIZE_K: 332 return false; 333 case IC_EVEX_L_W_KZ: 334 case IC_EVEX_L_W_XS_KZ: 335 case IC_EVEX_L_W_XD_KZ: 336 case IC_EVEX_L_W_OPSIZE_KZ: 337 return false; 338 case IC_EVEX_L2: 339 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W); 340 case IC_EVEX_L2_XS: 341 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XS); 342 case IC_EVEX_L2_XD: 343 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XD); 344 case IC_EVEX_L2_OPSIZE: 345 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE); 346 case IC_EVEX_L2_K: 347 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_K); 348 case IC_EVEX_L2_XS_K: 349 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_K); 350 case IC_EVEX_L2_XD_K: 351 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_K); 352 case IC_EVEX_L2_OPSIZE_K: 353 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_K); 354 case IC_EVEX_L2_KZ: 355 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_KZ); 356 case IC_EVEX_L2_XS_KZ: 357 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_KZ); 358 case IC_EVEX_L2_XD_KZ: 359 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_KZ); 360 case IC_EVEX_L2_OPSIZE_KZ: 361 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_KZ); 362 case IC_EVEX_L2_W: 363 case IC_EVEX_L2_W_XS: 364 case IC_EVEX_L2_W_XD: 365 case IC_EVEX_L2_W_OPSIZE: 366 return false; 367 case IC_EVEX_L2_W_K: 368 case IC_EVEX_L2_W_XS_K: 369 case IC_EVEX_L2_W_XD_K: 370 case IC_EVEX_L2_W_OPSIZE_K: 371 return false; 372 case IC_EVEX_L2_W_KZ: 373 case IC_EVEX_L2_W_XS_KZ: 374 case IC_EVEX_L2_W_XD_KZ: 375 case IC_EVEX_L2_W_OPSIZE_KZ: 376 return false; 377 case IC_EVEX_B: 378 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_B)) || 379 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_B)) || 380 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_B)) || 381 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_B)) || 382 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_B)); 383 case IC_EVEX_XS_B: 384 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XS_B)) || 385 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_B)) || 386 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_XS_B)) || 387 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_XS_B)) || 388 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XS_B)); 389 case IC_EVEX_XD_B: 390 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XD_B)) || 391 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_B)) || 392 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_XD_B)) || 393 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_XD_B)) || 394 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XD_B)); 395 case IC_EVEX_OPSIZE_B: 396 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_B)) || 397 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_B)) || 398 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_OPSIZE_B)) || 399 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_OPSIZE_B)) || 400 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_OPSIZE_B)); 401 case IC_EVEX_K_B: 402 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_K_B)) || 403 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_K_B)) || 404 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_K_B)) || 405 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_K_B)) || 406 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_K_B)); 407 case IC_EVEX_XS_K_B: 408 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XS_K_B)) || 409 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_K_B)) || 410 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_XS_K_B)) || 411 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_XS_K_B)) || 412 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XS_K_B)); 413 case IC_EVEX_XD_K_B: 414 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XD_K_B)) || 415 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_K_B)) || 416 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_XD_K_B)) || 417 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_XD_K_B)) || 418 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XD_K_B)); 419 case IC_EVEX_OPSIZE_K_B: 420 return (VEX_LIG && VEX_WIG && 421 inheritsFrom(child, IC_EVEX_L_W_OPSIZE_K_B)) || 422 (VEX_LIG && VEX_WIG && 423 inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_K_B)) || 424 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_OPSIZE_K_B)) || 425 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_OPSIZE_K_B)) || 426 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_OPSIZE_K_B)); 427 case IC_EVEX_KZ_B: 428 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_KZ_B)) || 429 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_KZ_B)) || 430 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_KZ_B)) || 431 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_KZ_B)) || 432 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_KZ_B)); 433 case IC_EVEX_XS_KZ_B: 434 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XS_KZ_B)) || 435 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_KZ_B)) || 436 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_XS_KZ_B)) || 437 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_XS_KZ_B)) || 438 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XS_KZ_B)); 439 case IC_EVEX_XD_KZ_B: 440 return (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XD_KZ_B)) || 441 (VEX_LIG && VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_KZ_B)) || 442 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_XD_KZ_B)) || 443 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_XD_KZ_B)) || 444 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XD_KZ_B)); 445 case IC_EVEX_OPSIZE_KZ_B: 446 return (VEX_LIG && VEX_WIG && 447 inheritsFrom(child, IC_EVEX_L_W_OPSIZE_KZ_B)) || 448 (VEX_LIG && VEX_WIG && 449 inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_KZ_B)) || 450 (VEX_WIG && inheritsFrom(child, IC_EVEX_W_OPSIZE_KZ_B)) || 451 (VEX_LIG && inheritsFrom(child, IC_EVEX_L_OPSIZE_KZ_B)) || 452 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_OPSIZE_KZ_B)); 453 case IC_EVEX_W_B: 454 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_B)) || 455 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_B)); 456 case IC_EVEX_W_XS_B: 457 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XS_B)) || 458 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XS_B)); 459 case IC_EVEX_W_XD_B: 460 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XD_B)) || 461 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XD_B)); 462 case IC_EVEX_W_OPSIZE_B: 463 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_B)) || 464 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_B)); 465 case IC_EVEX_W_K_B: 466 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_K_B)) || 467 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_K_B)); 468 case IC_EVEX_W_XS_K_B: 469 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XS_K_B)) || 470 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XS_K_B)); 471 case IC_EVEX_W_XD_K_B: 472 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XD_K_B)) || 473 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XD_K_B)); 474 case IC_EVEX_W_OPSIZE_K_B: 475 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_K_B)) || 476 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_K_B)); 477 case IC_EVEX_W_KZ_B: 478 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_KZ_B)) || 479 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_KZ_B)); 480 case IC_EVEX_W_XS_KZ_B: 481 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XS_KZ_B)) || 482 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XS_KZ_B)); 483 case IC_EVEX_W_XD_KZ_B: 484 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XD_KZ_B)) || 485 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XD_KZ_B)); 486 case IC_EVEX_W_OPSIZE_KZ_B: 487 return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_KZ_B)) || 488 (VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_KZ_B)); 489 case IC_EVEX_L_B: 490 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_B); 491 case IC_EVEX_L_XS_B: 492 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XS_B); 493 case IC_EVEX_L_XD_B: 494 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XD_B); 495 case IC_EVEX_L_OPSIZE_B: 496 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_B); 497 case IC_EVEX_L_K_B: 498 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_K_B); 499 case IC_EVEX_L_XS_K_B: 500 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XS_K_B); 501 case IC_EVEX_L_XD_K_B: 502 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XD_K_B); 503 case IC_EVEX_L_OPSIZE_K_B: 504 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_K_B); 505 case IC_EVEX_L_KZ_B: 506 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_KZ_B); 507 case IC_EVEX_L_XS_KZ_B: 508 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XS_KZ_B); 509 case IC_EVEX_L_XD_KZ_B: 510 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_XD_KZ_B); 511 case IC_EVEX_L_OPSIZE_KZ_B: 512 return VEX_WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_KZ_B); 513 case IC_EVEX_L_W_B: 514 case IC_EVEX_L_W_XS_B: 515 case IC_EVEX_L_W_XD_B: 516 case IC_EVEX_L_W_OPSIZE_B: 517 return false; 518 case IC_EVEX_L_W_K_B: 519 case IC_EVEX_L_W_XS_K_B: 520 case IC_EVEX_L_W_XD_K_B: 521 case IC_EVEX_L_W_OPSIZE_K_B: 522 return false; 523 case IC_EVEX_L_W_KZ_B: 524 case IC_EVEX_L_W_XS_KZ_B: 525 case IC_EVEX_L_W_XD_KZ_B: 526 case IC_EVEX_L_W_OPSIZE_KZ_B: 527 return false; 528 case IC_EVEX_L2_B: 529 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_B); 530 case IC_EVEX_L2_XS_B: 531 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_B); 532 case IC_EVEX_L2_XD_B: 533 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_B); 534 case IC_EVEX_L2_OPSIZE_B: 535 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_B); 536 case IC_EVEX_L2_K_B: 537 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_K_B); 538 case IC_EVEX_L2_XS_K_B: 539 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_K_B); 540 case IC_EVEX_L2_XD_K_B: 541 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_K_B); 542 case IC_EVEX_L2_OPSIZE_K_B: 543 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_K_B); 544 case IC_EVEX_L2_KZ_B: 545 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_KZ_B); 546 case IC_EVEX_L2_XS_KZ_B: 547 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_KZ_B); 548 case IC_EVEX_L2_XD_KZ_B: 549 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_KZ_B); 550 case IC_EVEX_L2_OPSIZE_KZ_B: 551 return VEX_WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_KZ_B); 552 case IC_EVEX_L2_W_B: 553 case IC_EVEX_L2_W_XS_B: 554 case IC_EVEX_L2_W_XD_B: 555 case IC_EVEX_L2_W_OPSIZE_B: 556 return false; 557 case IC_EVEX_L2_W_K_B: 558 case IC_EVEX_L2_W_XS_K_B: 559 case IC_EVEX_L2_W_XD_K_B: 560 case IC_EVEX_L2_W_OPSIZE_K_B: 561 return false; 562 case IC_EVEX_L2_W_KZ_B: 563 case IC_EVEX_L2_W_XS_KZ_B: 564 case IC_EVEX_L2_W_XD_KZ_B: 565 case IC_EVEX_L2_W_OPSIZE_KZ_B: 566 return false; 567 default: 568 errs() << "Unknown instruction class: " << 569 stringForContext((InstructionContext)parent) << "\n"; 570 llvm_unreachable("Unknown instruction class"); 571 } 572 } 573 574 /// outranks - Indicates whether, if an instruction has two different applicable 575 /// classes, which class should be preferred when performing decode. This 576 /// imposes a total ordering (ties are resolved toward "lower") 577 /// 578 /// @param upper - The class that may be preferable 579 /// @param lower - The class that may be less preferable 580 /// @return - True if upper is to be preferred, false otherwise. 581 static inline bool outranks(InstructionContext upper, 582 InstructionContext lower) { 583 assert(upper < IC_max); 584 assert(lower < IC_max); 585 586 #define ENUM_ENTRY(n, r, d) r, 587 #define ENUM_ENTRY_K_B(n, r, d) ENUM_ENTRY(n, r, d) \ 588 ENUM_ENTRY(n##_K_B, r, d) ENUM_ENTRY(n##_KZ_B, r, d) \ 589 ENUM_ENTRY(n##_KZ, r, d) ENUM_ENTRY(n##_K, r, d) ENUM_ENTRY(n##_B, r, d) 590 static int ranks[IC_max] = { 591 INSTRUCTION_CONTEXTS 592 }; 593 #undef ENUM_ENTRY 594 #undef ENUM_ENTRY_K_B 595 596 return (ranks[upper] > ranks[lower]); 597 } 598 599 /// getDecisionType - Determines whether a ModRM decision with 255 entries can 600 /// be compacted by eliminating redundant information. 601 /// 602 /// @param decision - The decision to be compacted. 603 /// @return - The compactest available representation for the decision. 604 static ModRMDecisionType getDecisionType(ModRMDecision &decision) { 605 bool satisfiesOneEntry = true; 606 bool satisfiesSplitRM = true; 607 bool satisfiesSplitReg = true; 608 bool satisfiesSplitMisc = true; 609 610 for (unsigned index = 0; index < 256; ++index) { 611 if (decision.instructionIDs[index] != decision.instructionIDs[0]) 612 satisfiesOneEntry = false; 613 614 if (((index & 0xc0) == 0xc0) && 615 (decision.instructionIDs[index] != decision.instructionIDs[0xc0])) 616 satisfiesSplitRM = false; 617 618 if (((index & 0xc0) != 0xc0) && 619 (decision.instructionIDs[index] != decision.instructionIDs[0x00])) 620 satisfiesSplitRM = false; 621 622 if (((index & 0xc0) == 0xc0) && 623 (decision.instructionIDs[index] != decision.instructionIDs[index&0xf8])) 624 satisfiesSplitReg = false; 625 626 if (((index & 0xc0) != 0xc0) && 627 (decision.instructionIDs[index] != decision.instructionIDs[index&0x38])) 628 satisfiesSplitMisc = false; 629 } 630 631 if (satisfiesOneEntry) 632 return MODRM_ONEENTRY; 633 634 if (satisfiesSplitRM) 635 return MODRM_SPLITRM; 636 637 if (satisfiesSplitReg && satisfiesSplitMisc) 638 return MODRM_SPLITREG; 639 640 if (satisfiesSplitMisc) 641 return MODRM_SPLITMISC; 642 643 return MODRM_FULL; 644 } 645 646 /// stringForDecisionType - Returns a statically-allocated string corresponding 647 /// to a particular decision type. 648 /// 649 /// @param dt - The decision type. 650 /// @return - A pointer to the statically-allocated string (e.g., 651 /// "MODRM_ONEENTRY" for MODRM_ONEENTRY). 652 static const char* stringForDecisionType(ModRMDecisionType dt) { 653 #define ENUM_ENTRY(n) case n: return #n; 654 switch (dt) { 655 default: 656 llvm_unreachable("Unknown decision type"); 657 MODRMTYPES 658 }; 659 #undef ENUM_ENTRY 660 } 661 662 DisassemblerTables::DisassemblerTables() { 663 for (unsigned i = 0; i < llvm::array_lengthof(Tables); i++) 664 Tables[i] = std::make_unique<ContextDecision>(); 665 666 HasConflicts = false; 667 } 668 669 DisassemblerTables::~DisassemblerTables() { 670 } 671 672 void DisassemblerTables::emitModRMDecision(raw_ostream &o1, raw_ostream &o2, 673 unsigned &i1, unsigned &i2, 674 unsigned &ModRMTableNum, 675 ModRMDecision &decision) const { 676 static uint32_t sEntryNumber = 1; 677 ModRMDecisionType dt = getDecisionType(decision); 678 679 if (dt == MODRM_ONEENTRY && decision.instructionIDs[0] == 0) { 680 // Empty table. 681 o2 << "{" << stringForDecisionType(dt) << ", 0}"; 682 return; 683 } 684 685 std::vector<unsigned> ModRMDecision; 686 687 switch (dt) { 688 default: 689 llvm_unreachable("Unknown decision type"); 690 case MODRM_ONEENTRY: 691 ModRMDecision.push_back(decision.instructionIDs[0]); 692 break; 693 case MODRM_SPLITRM: 694 ModRMDecision.push_back(decision.instructionIDs[0x00]); 695 ModRMDecision.push_back(decision.instructionIDs[0xc0]); 696 break; 697 case MODRM_SPLITREG: 698 for (unsigned index = 0; index < 64; index += 8) 699 ModRMDecision.push_back(decision.instructionIDs[index]); 700 for (unsigned index = 0xc0; index < 256; index += 8) 701 ModRMDecision.push_back(decision.instructionIDs[index]); 702 break; 703 case MODRM_SPLITMISC: 704 for (unsigned index = 0; index < 64; index += 8) 705 ModRMDecision.push_back(decision.instructionIDs[index]); 706 for (unsigned index = 0xc0; index < 256; ++index) 707 ModRMDecision.push_back(decision.instructionIDs[index]); 708 break; 709 case MODRM_FULL: 710 for (unsigned short InstructionID : decision.instructionIDs) 711 ModRMDecision.push_back(InstructionID); 712 break; 713 } 714 715 unsigned &EntryNumber = ModRMTable[ModRMDecision]; 716 if (EntryNumber == 0) { 717 EntryNumber = ModRMTableNum; 718 719 ModRMTableNum += ModRMDecision.size(); 720 o1 << "/*Table" << EntryNumber << "*/\n"; 721 i1++; 722 for (unsigned I : ModRMDecision) { 723 o1.indent(i1 * 2) << format("0x%hx", I) << ", /*" 724 << InstructionSpecifiers[I].name << "*/\n"; 725 } 726 i1--; 727 } 728 729 o2 << "{" << stringForDecisionType(dt) << ", " << EntryNumber << "}"; 730 731 switch (dt) { 732 default: 733 llvm_unreachable("Unknown decision type"); 734 case MODRM_ONEENTRY: 735 sEntryNumber += 1; 736 break; 737 case MODRM_SPLITRM: 738 sEntryNumber += 2; 739 break; 740 case MODRM_SPLITREG: 741 sEntryNumber += 16; 742 break; 743 case MODRM_SPLITMISC: 744 sEntryNumber += 8 + 64; 745 break; 746 case MODRM_FULL: 747 sEntryNumber += 256; 748 break; 749 } 750 751 // We assume that the index can fit into uint16_t. 752 assert(sEntryNumber < 65536U && 753 "Index into ModRMDecision is too large for uint16_t!"); 754 (void)sEntryNumber; 755 } 756 757 void DisassemblerTables::emitOpcodeDecision(raw_ostream &o1, raw_ostream &o2, 758 unsigned &i1, unsigned &i2, 759 unsigned &ModRMTableNum, 760 OpcodeDecision &opDecision) const { 761 o2 << "{"; 762 ++i2; 763 764 unsigned index; 765 for (index = 0; index < 256; ++index) { 766 auto &decision = opDecision.modRMDecisions[index]; 767 ModRMDecisionType dt = getDecisionType(decision); 768 if (!(dt == MODRM_ONEENTRY && decision.instructionIDs[0] == 0)) 769 break; 770 } 771 if (index == 256) { 772 // If all 256 entries are MODRM_ONEENTRY, omit output. 773 static_assert(MODRM_ONEENTRY == 0, ""); 774 --i2; 775 o2 << "},\n"; 776 } else { 777 o2 << " /* struct OpcodeDecision */ {\n"; 778 for (index = 0; index < 256; ++index) { 779 o2.indent(i2); 780 781 o2 << "/*0x" << format("%02hhx", index) << "*/"; 782 783 emitModRMDecision(o1, o2, i1, i2, ModRMTableNum, 784 opDecision.modRMDecisions[index]); 785 786 if (index < 255) 787 o2 << ","; 788 789 o2 << "\n"; 790 } 791 o2.indent(i2) << "}\n"; 792 --i2; 793 o2.indent(i2) << "},\n"; 794 } 795 } 796 797 void DisassemblerTables::emitContextDecision(raw_ostream &o1, raw_ostream &o2, 798 unsigned &i1, unsigned &i2, 799 unsigned &ModRMTableNum, 800 ContextDecision &decision, 801 const char* name) const { 802 o2.indent(i2) << "static const struct ContextDecision " << name << " = {{/* opcodeDecisions */\n"; 803 i2++; 804 805 for (unsigned index = 0; index < IC_max; ++index) { 806 o2.indent(i2) << "/*"; 807 o2 << stringForContext((InstructionContext)index); 808 o2 << "*/ "; 809 810 emitOpcodeDecision(o1, o2, i1, i2, ModRMTableNum, 811 decision.opcodeDecisions[index]); 812 } 813 814 i2--; 815 o2.indent(i2) << "}};" << "\n"; 816 } 817 818 void DisassemblerTables::emitInstructionInfo(raw_ostream &o, 819 unsigned &i) const { 820 unsigned NumInstructions = InstructionSpecifiers.size(); 821 822 o << "static const struct OperandSpecifier x86OperandSets[][" 823 << X86_MAX_OPERANDS << "] = {\n"; 824 825 typedef SmallVector<std::pair<OperandEncoding, OperandType>, 826 X86_MAX_OPERANDS> OperandListTy; 827 std::map<OperandListTy, unsigned> OperandSets; 828 829 unsigned OperandSetNum = 0; 830 for (unsigned Index = 0; Index < NumInstructions; ++Index) { 831 OperandListTy OperandList; 832 833 for (auto Operand : InstructionSpecifiers[Index].operands) { 834 OperandEncoding Encoding = (OperandEncoding)Operand.encoding; 835 OperandType Type = (OperandType)Operand.type; 836 OperandList.push_back(std::make_pair(Encoding, Type)); 837 } 838 unsigned &N = OperandSets[OperandList]; 839 if (N != 0) continue; 840 841 N = ++OperandSetNum; 842 843 o << " { /* " << (OperandSetNum - 1) << " */\n"; 844 for (unsigned i = 0, e = OperandList.size(); i != e; ++i) { 845 const char *Encoding = stringForOperandEncoding(OperandList[i].first); 846 const char *Type = stringForOperandType(OperandList[i].second); 847 o << " { " << Encoding << ", " << Type << " },\n"; 848 } 849 o << " },\n"; 850 } 851 o << "};" << "\n\n"; 852 853 o.indent(i * 2) << "static const struct InstructionSpecifier "; 854 o << INSTRUCTIONS_STR "[" << InstructionSpecifiers.size() << "] = {\n"; 855 856 i++; 857 858 for (unsigned index = 0; index < NumInstructions; ++index) { 859 o.indent(i * 2) << "{ /* " << index << " */\n"; 860 i++; 861 862 OperandListTy OperandList; 863 for (auto Operand : InstructionSpecifiers[index].operands) { 864 OperandEncoding Encoding = (OperandEncoding)Operand.encoding; 865 OperandType Type = (OperandType)Operand.type; 866 OperandList.push_back(std::make_pair(Encoding, Type)); 867 } 868 o.indent(i * 2) << (OperandSets[OperandList] - 1) << ",\n"; 869 870 o.indent(i * 2) << "/* " << InstructionSpecifiers[index].name << " */\n"; 871 872 i--; 873 o.indent(i * 2) << "},\n"; 874 } 875 876 i--; 877 o.indent(i * 2) << "};" << "\n"; 878 } 879 880 void DisassemblerTables::emitContextTable(raw_ostream &o, unsigned &i) const { 881 o.indent(i * 2) << "static const uint8_t " CONTEXTS_STR 882 "[" << ATTR_max << "] = {\n"; 883 i++; 884 885 for (unsigned index = 0; index < ATTR_max; ++index) { 886 o.indent(i * 2); 887 888 if ((index & ATTR_EVEX) || (index & ATTR_VEX) || (index & ATTR_VEXL)) { 889 if (index & ATTR_EVEX) 890 o << "IC_EVEX"; 891 else if ((index & (ATTR_64BIT | ATTR_VEXL | ATTR_REXW | ATTR_OPSIZE)) == 892 (ATTR_64BIT | ATTR_OPSIZE)) 893 o << "IC_64BIT_VEX"; 894 else 895 o << "IC_VEX"; 896 897 if ((index & ATTR_EVEX) && (index & ATTR_EVEXL2)) 898 o << "_L2"; 899 else if (index & ATTR_VEXL) 900 o << "_L"; 901 902 if (index & ATTR_REXW) 903 o << "_W"; 904 905 if (index & ATTR_OPSIZE) { 906 o << "_OPSIZE"; 907 if ((index & (ATTR_64BIT | ATTR_EVEX | ATTR_VEX | ATTR_VEXL | 908 ATTR_REXW | ATTR_ADSIZE)) == 909 (ATTR_64BIT | ATTR_VEX | ATTR_ADSIZE)) 910 o << "_ADSIZE"; 911 } else if (index & ATTR_XD) 912 o << "_XD"; 913 else if (index & ATTR_XS) 914 o << "_XS"; 915 916 if ((index & ATTR_EVEX)) { 917 if (index & ATTR_EVEXKZ) 918 o << "_KZ"; 919 else if (index & ATTR_EVEXK) 920 o << "_K"; 921 922 if (index & ATTR_EVEXB) 923 o << "_B"; 924 } 925 } else if ((index & ATTR_64BIT) && (index & ATTR_REXW) && (index & ATTR_XS)) 926 o << "IC_64BIT_REXW_XS"; 927 else if ((index & ATTR_64BIT) && (index & ATTR_REXW) && (index & ATTR_XD)) 928 o << "IC_64BIT_REXW_XD"; 929 else if ((index & ATTR_64BIT) && (index & ATTR_REXW) && 930 (index & ATTR_OPSIZE)) 931 o << "IC_64BIT_REXW_OPSIZE"; 932 else if ((index & ATTR_64BIT) && (index & ATTR_REXW) && 933 (index & ATTR_ADSIZE)) 934 o << "IC_64BIT_REXW_ADSIZE"; 935 else if ((index & ATTR_64BIT) && (index & ATTR_XD) && (index & ATTR_OPSIZE)) 936 o << "IC_64BIT_XD_OPSIZE"; 937 else if ((index & ATTR_64BIT) && (index & ATTR_XD) && (index & ATTR_ADSIZE)) 938 o << "IC_64BIT_XD_ADSIZE"; 939 else if ((index & ATTR_64BIT) && (index & ATTR_XS) && (index & ATTR_OPSIZE)) 940 o << "IC_64BIT_XS_OPSIZE"; 941 else if ((index & ATTR_64BIT) && (index & ATTR_XS) && (index & ATTR_ADSIZE)) 942 o << "IC_64BIT_XS_ADSIZE"; 943 else if ((index & ATTR_64BIT) && (index & ATTR_XS)) 944 o << "IC_64BIT_XS"; 945 else if ((index & ATTR_64BIT) && (index & ATTR_XD)) 946 o << "IC_64BIT_XD"; 947 else if ((index & ATTR_64BIT) && (index & ATTR_OPSIZE) && 948 (index & ATTR_ADSIZE)) 949 o << "IC_64BIT_OPSIZE_ADSIZE"; 950 else if ((index & ATTR_64BIT) && (index & ATTR_OPSIZE)) 951 o << "IC_64BIT_OPSIZE"; 952 else if ((index & ATTR_64BIT) && (index & ATTR_ADSIZE)) 953 o << "IC_64BIT_ADSIZE"; 954 else if ((index & ATTR_64BIT) && (index & ATTR_REXW)) 955 o << "IC_64BIT_REXW"; 956 else if ((index & ATTR_64BIT)) 957 o << "IC_64BIT"; 958 else if ((index & ATTR_XS) && (index & ATTR_OPSIZE)) 959 o << "IC_XS_OPSIZE"; 960 else if ((index & ATTR_XD) && (index & ATTR_OPSIZE)) 961 o << "IC_XD_OPSIZE"; 962 else if ((index & ATTR_XS) && (index & ATTR_ADSIZE)) 963 o << "IC_XS_ADSIZE"; 964 else if ((index & ATTR_XD) && (index & ATTR_ADSIZE)) 965 o << "IC_XD_ADSIZE"; 966 else if (index & ATTR_XS) 967 o << "IC_XS"; 968 else if (index & ATTR_XD) 969 o << "IC_XD"; 970 else if ((index & ATTR_OPSIZE) && (index & ATTR_ADSIZE)) 971 o << "IC_OPSIZE_ADSIZE"; 972 else if (index & ATTR_OPSIZE) 973 o << "IC_OPSIZE"; 974 else if (index & ATTR_ADSIZE) 975 o << "IC_ADSIZE"; 976 else 977 o << "IC"; 978 979 o << ", // " << index << "\n"; 980 } 981 982 i--; 983 o.indent(i * 2) << "};" << "\n"; 984 } 985 986 void DisassemblerTables::emitContextDecisions(raw_ostream &o1, raw_ostream &o2, 987 unsigned &i1, unsigned &i2, 988 unsigned &ModRMTableNum) const { 989 emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[0], ONEBYTE_STR); 990 emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[1], TWOBYTE_STR); 991 emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[2], THREEBYTE38_STR); 992 emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[3], THREEBYTE3A_STR); 993 emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[4], XOP8_MAP_STR); 994 emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[5], XOP9_MAP_STR); 995 emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[6], XOPA_MAP_STR); 996 emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[7], THREEDNOW_MAP_STR); 997 emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[8], MAP5_STR); 998 emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[9], MAP6_STR); 999 } 1000 1001 void DisassemblerTables::emit(raw_ostream &o) const { 1002 unsigned i1 = 0; 1003 unsigned i2 = 0; 1004 1005 std::string s1; 1006 std::string s2; 1007 1008 raw_string_ostream o1(s1); 1009 raw_string_ostream o2(s2); 1010 1011 emitInstructionInfo(o, i2); 1012 o << "\n"; 1013 1014 emitContextTable(o, i2); 1015 o << "\n"; 1016 1017 unsigned ModRMTableNum = 0; 1018 1019 o << "static const InstrUID modRMTable[] = {\n"; 1020 i1++; 1021 std::vector<unsigned> EmptyTable(1, 0); 1022 ModRMTable[EmptyTable] = ModRMTableNum; 1023 ModRMTableNum += EmptyTable.size(); 1024 o1 << "/*EmptyTable*/\n"; 1025 o1.indent(i1 * 2) << "0x0,\n"; 1026 i1--; 1027 emitContextDecisions(o1, o2, i1, i2, ModRMTableNum); 1028 1029 o << o1.str(); 1030 o << " 0x0\n"; 1031 o << "};\n"; 1032 o << "\n"; 1033 o << o2.str(); 1034 o << "\n"; 1035 o << "\n"; 1036 } 1037 1038 void DisassemblerTables::setTableFields(ModRMDecision &decision, 1039 const ModRMFilter &filter, 1040 InstrUID uid, 1041 uint8_t opcode) { 1042 for (unsigned index = 0; index < 256; ++index) { 1043 if (filter.accepts(index)) { 1044 if (decision.instructionIDs[index] == uid) 1045 continue; 1046 1047 if (decision.instructionIDs[index] != 0) { 1048 InstructionSpecifier &newInfo = 1049 InstructionSpecifiers[uid]; 1050 InstructionSpecifier &previousInfo = 1051 InstructionSpecifiers[decision.instructionIDs[index]]; 1052 1053 if(previousInfo.name == "NOOP" && (newInfo.name == "XCHG16ar" || 1054 newInfo.name == "XCHG32ar" || 1055 newInfo.name == "XCHG64ar")) 1056 continue; // special case for XCHG*ar and NOOP 1057 1058 if (outranks(previousInfo.insnContext, newInfo.insnContext)) 1059 continue; 1060 1061 if (previousInfo.insnContext == newInfo.insnContext) { 1062 errs() << "Error: Primary decode conflict: "; 1063 errs() << newInfo.name << " would overwrite " << previousInfo.name; 1064 errs() << "\n"; 1065 errs() << "ModRM " << index << "\n"; 1066 errs() << "Opcode " << (uint16_t)opcode << "\n"; 1067 errs() << "Context " << stringForContext(newInfo.insnContext) << "\n"; 1068 HasConflicts = true; 1069 } 1070 } 1071 1072 decision.instructionIDs[index] = uid; 1073 } 1074 } 1075 } 1076 1077 void DisassemblerTables::setTableFields(OpcodeType type, 1078 InstructionContext insnContext, 1079 uint8_t opcode, 1080 const ModRMFilter &filter, 1081 InstrUID uid, 1082 bool is32bit, 1083 bool noPrefix, 1084 bool ignoresVEX_L, 1085 bool ignoresVEX_W, 1086 unsigned addressSize) { 1087 ContextDecision &decision = *Tables[type]; 1088 1089 for (unsigned index = 0; index < IC_max; ++index) { 1090 if ((is32bit || addressSize == 16) && 1091 inheritsFrom((InstructionContext)index, IC_64BIT)) 1092 continue; 1093 1094 bool adSize64 = addressSize == 64; 1095 if (inheritsFrom((InstructionContext)index, 1096 InstructionSpecifiers[uid].insnContext, noPrefix, 1097 ignoresVEX_L, ignoresVEX_W, adSize64)) 1098 setTableFields(decision.opcodeDecisions[index].modRMDecisions[opcode], 1099 filter, 1100 uid, 1101 opcode); 1102 } 1103 } 1104