1 //===- X86RecognizableInstr.cpp - Disassembler instruction spec --*- 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 Emitter. 11 // It contains the implementation of a single recognizable instruction. 12 // Documentation for the disassembler emitter in general can be found in 13 // X86DisasemblerEmitter.h. 14 // 15 //===----------------------------------------------------------------------===// 16 17 #include "X86RecognizableInstr.h" 18 #include "X86DisassemblerShared.h" 19 #include "X86ModRMFilters.h" 20 #include "llvm/Support/ErrorHandling.h" 21 #include <string> 22 23 using namespace llvm; 24 25 #define MRM_MAPPING \ 26 MAP(C1, 33) \ 27 MAP(C2, 34) \ 28 MAP(C3, 35) \ 29 MAP(C4, 36) \ 30 MAP(C8, 37) \ 31 MAP(C9, 38) \ 32 MAP(CA, 39) \ 33 MAP(CB, 40) \ 34 MAP(E8, 41) \ 35 MAP(F0, 42) \ 36 MAP(F8, 45) \ 37 MAP(F9, 46) \ 38 MAP(D0, 47) \ 39 MAP(D1, 48) \ 40 MAP(D4, 49) \ 41 MAP(D5, 50) \ 42 MAP(D6, 51) \ 43 MAP(D8, 52) \ 44 MAP(D9, 53) \ 45 MAP(DA, 54) \ 46 MAP(DB, 55) \ 47 MAP(DC, 56) \ 48 MAP(DD, 57) \ 49 MAP(DE, 58) \ 50 MAP(DF, 59) 51 52 // A clone of X86 since we can't depend on something that is generated. 53 namespace X86Local { 54 enum { 55 Pseudo = 0, 56 RawFrm = 1, 57 AddRegFrm = 2, 58 MRMDestReg = 3, 59 MRMDestMem = 4, 60 MRMSrcReg = 5, 61 MRMSrcMem = 6, 62 MRM0r = 16, MRM1r = 17, MRM2r = 18, MRM3r = 19, 63 MRM4r = 20, MRM5r = 21, MRM6r = 22, MRM7r = 23, 64 MRM0m = 24, MRM1m = 25, MRM2m = 26, MRM3m = 27, 65 MRM4m = 28, MRM5m = 29, MRM6m = 30, MRM7m = 31, 66 MRMInitReg = 32, 67 RawFrmImm8 = 43, 68 RawFrmImm16 = 44, 69 #define MAP(from, to) MRM_##from = to, 70 MRM_MAPPING 71 #undef MAP 72 lastMRM 73 }; 74 75 enum { 76 TB = 1, 77 REP = 2, 78 D8 = 3, D9 = 4, DA = 5, DB = 6, 79 DC = 7, DD = 8, DE = 9, DF = 10, 80 XD = 11, XS = 12, 81 T8 = 13, P_TA = 14, 82 A6 = 15, A7 = 16, T8XD = 17, T8XS = 18, TAXD = 19 83 }; 84 } 85 86 // If rows are added to the opcode extension tables, then corresponding entries 87 // must be added here. 88 // 89 // If the row corresponds to a single byte (i.e., 8f), then add an entry for 90 // that byte to ONE_BYTE_EXTENSION_TABLES. 91 // 92 // If the row corresponds to two bytes where the first is 0f, add an entry for 93 // the second byte to TWO_BYTE_EXTENSION_TABLES. 94 // 95 // If the row corresponds to some other set of bytes, you will need to modify 96 // the code in RecognizableInstr::emitDecodePath() as well, and add new prefixes 97 // to the X86 TD files, except in two cases: if the first two bytes of such a 98 // new combination are 0f 38 or 0f 3a, you just have to add maps called 99 // THREE_BYTE_38_EXTENSION_TABLES and THREE_BYTE_3A_EXTENSION_TABLES and add a 100 // switch(Opcode) just below the case X86Local::T8: or case X86Local::TA: line 101 // in RecognizableInstr::emitDecodePath(). 102 103 #define ONE_BYTE_EXTENSION_TABLES \ 104 EXTENSION_TABLE(80) \ 105 EXTENSION_TABLE(81) \ 106 EXTENSION_TABLE(82) \ 107 EXTENSION_TABLE(83) \ 108 EXTENSION_TABLE(8f) \ 109 EXTENSION_TABLE(c0) \ 110 EXTENSION_TABLE(c1) \ 111 EXTENSION_TABLE(c6) \ 112 EXTENSION_TABLE(c7) \ 113 EXTENSION_TABLE(d0) \ 114 EXTENSION_TABLE(d1) \ 115 EXTENSION_TABLE(d2) \ 116 EXTENSION_TABLE(d3) \ 117 EXTENSION_TABLE(f6) \ 118 EXTENSION_TABLE(f7) \ 119 EXTENSION_TABLE(fe) \ 120 EXTENSION_TABLE(ff) 121 122 #define TWO_BYTE_EXTENSION_TABLES \ 123 EXTENSION_TABLE(00) \ 124 EXTENSION_TABLE(01) \ 125 EXTENSION_TABLE(0d) \ 126 EXTENSION_TABLE(18) \ 127 EXTENSION_TABLE(71) \ 128 EXTENSION_TABLE(72) \ 129 EXTENSION_TABLE(73) \ 130 EXTENSION_TABLE(ae) \ 131 EXTENSION_TABLE(ba) \ 132 EXTENSION_TABLE(c7) 133 134 #define THREE_BYTE_38_EXTENSION_TABLES \ 135 EXTENSION_TABLE(F3) 136 137 using namespace X86Disassembler; 138 139 /// needsModRMForDecode - Indicates whether a particular instruction requires a 140 /// ModR/M byte for the instruction to be properly decoded. For example, a 141 /// MRMDestReg instruction needs the Mod field in the ModR/M byte to be set to 142 /// 0b11. 143 /// 144 /// @param form - The form of the instruction. 145 /// @return - true if the form implies that a ModR/M byte is required, false 146 /// otherwise. 147 static bool needsModRMForDecode(uint8_t form) { 148 if (form == X86Local::MRMDestReg || 149 form == X86Local::MRMDestMem || 150 form == X86Local::MRMSrcReg || 151 form == X86Local::MRMSrcMem || 152 (form >= X86Local::MRM0r && form <= X86Local::MRM7r) || 153 (form >= X86Local::MRM0m && form <= X86Local::MRM7m)) 154 return true; 155 else 156 return false; 157 } 158 159 /// isRegFormat - Indicates whether a particular form requires the Mod field of 160 /// the ModR/M byte to be 0b11. 161 /// 162 /// @param form - The form of the instruction. 163 /// @return - true if the form implies that Mod must be 0b11, false 164 /// otherwise. 165 static bool isRegFormat(uint8_t form) { 166 if (form == X86Local::MRMDestReg || 167 form == X86Local::MRMSrcReg || 168 (form >= X86Local::MRM0r && form <= X86Local::MRM7r)) 169 return true; 170 else 171 return false; 172 } 173 174 /// byteFromBitsInit - Extracts a value at most 8 bits in width from a BitsInit. 175 /// Useful for switch statements and the like. 176 /// 177 /// @param init - A reference to the BitsInit to be decoded. 178 /// @return - The field, with the first bit in the BitsInit as the lowest 179 /// order bit. 180 static uint8_t byteFromBitsInit(BitsInit &init) { 181 int width = init.getNumBits(); 182 183 assert(width <= 8 && "Field is too large for uint8_t!"); 184 185 int index; 186 uint8_t mask = 0x01; 187 188 uint8_t ret = 0; 189 190 for (index = 0; index < width; index++) { 191 if (static_cast<BitInit*>(init.getBit(index))->getValue()) 192 ret |= mask; 193 194 mask <<= 1; 195 } 196 197 return ret; 198 } 199 200 /// byteFromRec - Extract a value at most 8 bits in with from a Record given the 201 /// name of the field. 202 /// 203 /// @param rec - The record from which to extract the value. 204 /// @param name - The name of the field in the record. 205 /// @return - The field, as translated by byteFromBitsInit(). 206 static uint8_t byteFromRec(const Record* rec, const std::string &name) { 207 BitsInit* bits = rec->getValueAsBitsInit(name); 208 return byteFromBitsInit(*bits); 209 } 210 211 RecognizableInstr::RecognizableInstr(DisassemblerTables &tables, 212 const CodeGenInstruction &insn, 213 InstrUID uid) { 214 UID = uid; 215 216 Rec = insn.TheDef; 217 Name = Rec->getName(); 218 Spec = &tables.specForUID(UID); 219 220 if (!Rec->isSubClassOf("X86Inst")) { 221 ShouldBeEmitted = false; 222 return; 223 } 224 225 Prefix = byteFromRec(Rec, "Prefix"); 226 Opcode = byteFromRec(Rec, "Opcode"); 227 Form = byteFromRec(Rec, "FormBits"); 228 SegOvr = byteFromRec(Rec, "SegOvrBits"); 229 230 HasOpSizePrefix = Rec->getValueAsBit("hasOpSizePrefix"); 231 HasAdSizePrefix = Rec->getValueAsBit("hasAdSizePrefix"); 232 HasREX_WPrefix = Rec->getValueAsBit("hasREX_WPrefix"); 233 HasVEXPrefix = Rec->getValueAsBit("hasVEXPrefix"); 234 HasVEX_4VPrefix = Rec->getValueAsBit("hasVEX_4VPrefix"); 235 HasVEX_4VOp3Prefix = Rec->getValueAsBit("hasVEX_4VOp3Prefix"); 236 HasVEX_WPrefix = Rec->getValueAsBit("hasVEX_WPrefix"); 237 HasMemOp4Prefix = Rec->getValueAsBit("hasMemOp4Prefix"); 238 IgnoresVEX_L = Rec->getValueAsBit("ignoresVEX_L"); 239 HasEVEXPrefix = Rec->getValueAsBit("hasEVEXPrefix"); 240 HasEVEX_L2Prefix = Rec->getValueAsBit("hasEVEX_L2"); 241 HasEVEX_K = Rec->getValueAsBit("hasEVEX_K"); 242 HasEVEX_B = Rec->getValueAsBit("hasEVEX_B"); 243 HasLockPrefix = Rec->getValueAsBit("hasLockPrefix"); 244 IsCodeGenOnly = Rec->getValueAsBit("isCodeGenOnly"); 245 246 Name = Rec->getName(); 247 AsmString = Rec->getValueAsString("AsmString"); 248 249 Operands = &insn.Operands.OperandList; 250 251 IsSSE = (HasOpSizePrefix && (Name.find("16") == Name.npos)) || 252 (Name.find("CRC32") != Name.npos); 253 HasFROperands = hasFROperands(); 254 HasVEX_LPrefix = Rec->getValueAsBit("hasVEX_L"); 255 256 // Check for 64-bit inst which does not require REX 257 Is32Bit = false; 258 Is64Bit = false; 259 // FIXME: Is there some better way to check for In64BitMode? 260 std::vector<Record*> Predicates = Rec->getValueAsListOfDefs("Predicates"); 261 for (unsigned i = 0, e = Predicates.size(); i != e; ++i) { 262 if (Predicates[i]->getName().find("32Bit") != Name.npos) { 263 Is32Bit = true; 264 break; 265 } 266 if (Predicates[i]->getName().find("64Bit") != Name.npos) { 267 Is64Bit = true; 268 break; 269 } 270 } 271 // FIXME: These instructions aren't marked as 64-bit in any way 272 Is64Bit |= Rec->getName() == "JMP64pcrel32" || 273 Rec->getName() == "MASKMOVDQU64" || 274 Rec->getName() == "POPFS64" || 275 Rec->getName() == "POPGS64" || 276 Rec->getName() == "PUSHFS64" || 277 Rec->getName() == "PUSHGS64" || 278 Rec->getName() == "REX64_PREFIX" || 279 Rec->getName().find("MOV64") != Name.npos || 280 Rec->getName().find("PUSH64") != Name.npos || 281 Rec->getName().find("POP64") != Name.npos; 282 283 ShouldBeEmitted = true; 284 } 285 286 void RecognizableInstr::processInstr(DisassemblerTables &tables, 287 const CodeGenInstruction &insn, 288 InstrUID uid) 289 { 290 // Ignore "asm parser only" instructions. 291 if (insn.TheDef->getValueAsBit("isAsmParserOnly")) 292 return; 293 294 RecognizableInstr recogInstr(tables, insn, uid); 295 296 recogInstr.emitInstructionSpecifier(tables); 297 298 if (recogInstr.shouldBeEmitted()) 299 recogInstr.emitDecodePath(tables); 300 } 301 302 #define EVEX_KB(n) (HasEVEX_K && HasEVEX_B? n##_K_B : \ 303 (HasEVEX_K? n##_K : (HasEVEX_B ? n##_B : n))) 304 305 InstructionContext RecognizableInstr::insnContext() const { 306 InstructionContext insnContext; 307 308 if (HasEVEXPrefix) { 309 if (HasVEX_LPrefix && HasEVEX_L2Prefix) { 310 errs() << "Don't support VEX.L if EVEX_L2 is enabled: " << Name << "\n"; 311 llvm_unreachable("Don't support VEX.L if EVEX_L2 is enabled"); 312 } 313 // VEX_L & VEX_W 314 if (HasVEX_LPrefix && HasVEX_WPrefix) { 315 if (HasOpSizePrefix) 316 insnContext = EVEX_KB(IC_EVEX_L_W_OPSIZE); 317 else if (Prefix == X86Local::XS || Prefix == X86Local::T8XS) 318 insnContext = EVEX_KB(IC_EVEX_L_W_XS); 319 else if (Prefix == X86Local::XD || Prefix == X86Local::T8XD || 320 Prefix == X86Local::TAXD) 321 insnContext = EVEX_KB(IC_EVEX_L_W_XD); 322 else 323 insnContext = EVEX_KB(IC_EVEX_L_W); 324 } else if (HasVEX_LPrefix) { 325 // VEX_L 326 if (HasOpSizePrefix) 327 insnContext = EVEX_KB(IC_EVEX_L_OPSIZE); 328 else if (Prefix == X86Local::XS || Prefix == X86Local::T8XS) 329 insnContext = EVEX_KB(IC_EVEX_L_XS); 330 else if (Prefix == X86Local::XD || Prefix == X86Local::T8XD || 331 Prefix == X86Local::TAXD) 332 insnContext = EVEX_KB(IC_EVEX_L_XD); 333 else 334 insnContext = EVEX_KB(IC_EVEX_L); 335 } 336 else if (HasEVEX_L2Prefix && HasVEX_WPrefix) { 337 // EVEX_L2 & VEX_W 338 if (HasOpSizePrefix) 339 insnContext = EVEX_KB(IC_EVEX_L2_W_OPSIZE); 340 else if (Prefix == X86Local::XS || Prefix == X86Local::T8XS) 341 insnContext = EVEX_KB(IC_EVEX_L2_W_XS); 342 else if (Prefix == X86Local::XD || Prefix == X86Local::T8XD || 343 Prefix == X86Local::TAXD) 344 insnContext = EVEX_KB(IC_EVEX_L2_W_XD); 345 else 346 insnContext = EVEX_KB(IC_EVEX_L2_W); 347 } else if (HasEVEX_L2Prefix) { 348 // EVEX_L2 349 if (HasOpSizePrefix) 350 insnContext = EVEX_KB(IC_EVEX_L2_OPSIZE); 351 else if (Prefix == X86Local::XD || Prefix == X86Local::T8XD || 352 Prefix == X86Local::TAXD) 353 insnContext = EVEX_KB(IC_EVEX_L2_XD); 354 else if (Prefix == X86Local::XS || Prefix == X86Local::T8XS) 355 insnContext = EVEX_KB(IC_EVEX_L2_XS); 356 else 357 insnContext = EVEX_KB(IC_EVEX_L2); 358 } 359 else if (HasVEX_WPrefix) { 360 // VEX_W 361 if (HasOpSizePrefix) 362 insnContext = EVEX_KB(IC_EVEX_W_OPSIZE); 363 else if (Prefix == X86Local::XS || Prefix == X86Local::T8XS) 364 insnContext = EVEX_KB(IC_EVEX_W_XS); 365 else if (Prefix == X86Local::XD || Prefix == X86Local::T8XD || 366 Prefix == X86Local::TAXD) 367 insnContext = EVEX_KB(IC_EVEX_W_XD); 368 else 369 insnContext = EVEX_KB(IC_EVEX_W); 370 } 371 // No L, no W 372 else if (HasOpSizePrefix) 373 insnContext = EVEX_KB(IC_EVEX_OPSIZE); 374 else if (Prefix == X86Local::XD || Prefix == X86Local::T8XD || 375 Prefix == X86Local::TAXD) 376 insnContext = EVEX_KB(IC_EVEX_XD); 377 else if (Prefix == X86Local::XS || Prefix == X86Local::T8XS) 378 insnContext = EVEX_KB(IC_EVEX_XS); 379 else 380 insnContext = EVEX_KB(IC_EVEX); 381 /// eof EVEX 382 } else if (HasVEX_4VPrefix || HasVEX_4VOp3Prefix|| HasVEXPrefix) { 383 if (HasVEX_LPrefix && HasVEX_WPrefix) { 384 if (HasOpSizePrefix) 385 insnContext = IC_VEX_L_W_OPSIZE; 386 else if (Prefix == X86Local::XS || Prefix == X86Local::T8XS) 387 insnContext = IC_VEX_L_W_XS; 388 else if (Prefix == X86Local::XD || Prefix == X86Local::T8XD || 389 Prefix == X86Local::TAXD) 390 insnContext = IC_VEX_L_W_XD; 391 else 392 insnContext = IC_VEX_L_W; 393 } else if (HasOpSizePrefix && HasVEX_LPrefix) 394 insnContext = IC_VEX_L_OPSIZE; 395 else if (HasOpSizePrefix && HasVEX_WPrefix) 396 insnContext = IC_VEX_W_OPSIZE; 397 else if (HasOpSizePrefix) 398 insnContext = IC_VEX_OPSIZE; 399 else if (HasVEX_LPrefix && 400 (Prefix == X86Local::XS || Prefix == X86Local::T8XS)) 401 insnContext = IC_VEX_L_XS; 402 else if (HasVEX_LPrefix && (Prefix == X86Local::XD || 403 Prefix == X86Local::T8XD || 404 Prefix == X86Local::TAXD)) 405 insnContext = IC_VEX_L_XD; 406 else if (HasVEX_WPrefix && 407 (Prefix == X86Local::XS || Prefix == X86Local::T8XS)) 408 insnContext = IC_VEX_W_XS; 409 else if (HasVEX_WPrefix && (Prefix == X86Local::XD || 410 Prefix == X86Local::T8XD || 411 Prefix == X86Local::TAXD)) 412 insnContext = IC_VEX_W_XD; 413 else if (HasVEX_WPrefix) 414 insnContext = IC_VEX_W; 415 else if (HasVEX_LPrefix) 416 insnContext = IC_VEX_L; 417 else if (Prefix == X86Local::XD || Prefix == X86Local::T8XD || 418 Prefix == X86Local::TAXD) 419 insnContext = IC_VEX_XD; 420 else if (Prefix == X86Local::XS || Prefix == X86Local::T8XS) 421 insnContext = IC_VEX_XS; 422 else 423 insnContext = IC_VEX; 424 } else if (Is64Bit || HasREX_WPrefix) { 425 if (HasREX_WPrefix && HasOpSizePrefix) 426 insnContext = IC_64BIT_REXW_OPSIZE; 427 else if (HasOpSizePrefix && (Prefix == X86Local::XD || 428 Prefix == X86Local::T8XD || 429 Prefix == X86Local::TAXD)) 430 insnContext = IC_64BIT_XD_OPSIZE; 431 else if (HasOpSizePrefix && 432 (Prefix == X86Local::XS || Prefix == X86Local::T8XS)) 433 insnContext = IC_64BIT_XS_OPSIZE; 434 else if (HasOpSizePrefix) 435 insnContext = IC_64BIT_OPSIZE; 436 else if (HasAdSizePrefix) 437 insnContext = IC_64BIT_ADSIZE; 438 else if (HasREX_WPrefix && 439 (Prefix == X86Local::XS || Prefix == X86Local::T8XS)) 440 insnContext = IC_64BIT_REXW_XS; 441 else if (HasREX_WPrefix && (Prefix == X86Local::XD || 442 Prefix == X86Local::T8XD || 443 Prefix == X86Local::TAXD)) 444 insnContext = IC_64BIT_REXW_XD; 445 else if (Prefix == X86Local::XD || Prefix == X86Local::T8XD || 446 Prefix == X86Local::TAXD) 447 insnContext = IC_64BIT_XD; 448 else if (Prefix == X86Local::XS || Prefix == X86Local::T8XS) 449 insnContext = IC_64BIT_XS; 450 else if (HasREX_WPrefix) 451 insnContext = IC_64BIT_REXW; 452 else 453 insnContext = IC_64BIT; 454 } else { 455 if (HasOpSizePrefix && (Prefix == X86Local::XD || 456 Prefix == X86Local::T8XD || 457 Prefix == X86Local::TAXD)) 458 insnContext = IC_XD_OPSIZE; 459 else if (HasOpSizePrefix && 460 (Prefix == X86Local::XS || Prefix == X86Local::T8XS)) 461 insnContext = IC_XS_OPSIZE; 462 else if (HasOpSizePrefix) 463 insnContext = IC_OPSIZE; 464 else if (HasAdSizePrefix) 465 insnContext = IC_ADSIZE; 466 else if (Prefix == X86Local::XD || Prefix == X86Local::T8XD || 467 Prefix == X86Local::TAXD) 468 insnContext = IC_XD; 469 else if (Prefix == X86Local::XS || Prefix == X86Local::T8XS || 470 Prefix == X86Local::REP) 471 insnContext = IC_XS; 472 else 473 insnContext = IC; 474 } 475 476 return insnContext; 477 } 478 479 RecognizableInstr::filter_ret RecognizableInstr::filter() const { 480 /////////////////// 481 // FILTER_STRONG 482 // 483 484 // Filter out intrinsics 485 486 assert(Rec->isSubClassOf("X86Inst") && "Can only filter X86 instructions"); 487 488 if (Form == X86Local::Pseudo || 489 (IsCodeGenOnly && Name.find("_REV") == Name.npos)) 490 return FILTER_STRONG; 491 492 493 // Filter out artificial instructions but leave in the LOCK_PREFIX so it is 494 // printed as a separate "instruction". 495 496 if (Name.find("_Int") != Name.npos || 497 Name.find("Int_") != Name.npos) 498 return FILTER_STRONG; 499 500 // Filter out instructions with segment override prefixes. 501 // They're too messy to handle now and we'll special case them if needed. 502 503 if (SegOvr) 504 return FILTER_STRONG; 505 506 507 ///////////////// 508 // FILTER_WEAK 509 // 510 511 512 // Filter out instructions with a LOCK prefix; 513 // prefer forms that do not have the prefix 514 if (HasLockPrefix) 515 return FILTER_WEAK; 516 517 // Filter out alternate forms of AVX instructions 518 if (Name.find("_alt") != Name.npos || 519 Name.find("XrYr") != Name.npos || 520 (Name.find("r64r") != Name.npos && Name.find("r64r64") == Name.npos) || 521 Name.find("_64mr") != Name.npos || 522 Name.find("Xrr") != Name.npos || 523 Name.find("rr64") != Name.npos) 524 return FILTER_WEAK; 525 526 // Special cases. 527 528 if (Name.find("PCMPISTRI") != Name.npos && Name != "PCMPISTRI") 529 return FILTER_WEAK; 530 if (Name.find("PCMPESTRI") != Name.npos && Name != "PCMPESTRI") 531 return FILTER_WEAK; 532 533 if (Name.find("MOV") != Name.npos && Name.find("r0") != Name.npos) 534 return FILTER_WEAK; 535 if (Name.find("MOVZ") != Name.npos && Name.find("MOVZX") == Name.npos) 536 return FILTER_WEAK; 537 if (Name.find("Fs") != Name.npos) 538 return FILTER_WEAK; 539 if (Name == "PUSH64i16" || 540 Name == "MOVPQI2QImr" || 541 Name == "VMOVPQI2QImr" || 542 Name == "MMX_MOVD64rrv164" || 543 Name == "MOV64ri64i32" || 544 Name == "VMASKMOVDQU64" || 545 Name == "VEXTRACTPSrr64" || 546 Name == "VMOVQd64rr" || 547 Name == "VMOVQs64rr") 548 return FILTER_WEAK; 549 550 // XACQUIRE and XRELEASE reuse REPNE and REP respectively. 551 // For now, just prefer the REP versions. 552 if (Name == "XACQUIRE_PREFIX" || 553 Name == "XRELEASE_PREFIX") 554 return FILTER_WEAK; 555 556 if (HasFROperands && Name.find("MOV") != Name.npos && 557 ((Name.find("2") != Name.npos && Name.find("32") == Name.npos) || 558 (Name.find("to") != Name.npos))) 559 return FILTER_STRONG; 560 561 return FILTER_NORMAL; 562 } 563 564 bool RecognizableInstr::hasFROperands() const { 565 const std::vector<CGIOperandList::OperandInfo> &OperandList = *Operands; 566 unsigned numOperands = OperandList.size(); 567 568 for (unsigned operandIndex = 0; operandIndex < numOperands; ++operandIndex) { 569 const std::string &recName = OperandList[operandIndex].Rec->getName(); 570 571 if (recName.find("FR") != recName.npos) 572 return true; 573 } 574 return false; 575 } 576 577 void RecognizableInstr::handleOperand(bool optional, unsigned &operandIndex, 578 unsigned &physicalOperandIndex, 579 unsigned &numPhysicalOperands, 580 const unsigned *operandMapping, 581 OperandEncoding (*encodingFromString) 582 (const std::string&, 583 bool hasOpSizePrefix)) { 584 if (optional) { 585 if (physicalOperandIndex >= numPhysicalOperands) 586 return; 587 } else { 588 assert(physicalOperandIndex < numPhysicalOperands); 589 } 590 591 while (operandMapping[operandIndex] != operandIndex) { 592 Spec->operands[operandIndex].encoding = ENCODING_DUP; 593 Spec->operands[operandIndex].type = 594 (OperandType)(TYPE_DUP0 + operandMapping[operandIndex]); 595 ++operandIndex; 596 } 597 598 const std::string &typeName = (*Operands)[operandIndex].Rec->getName(); 599 600 Spec->operands[operandIndex].encoding = encodingFromString(typeName, 601 HasOpSizePrefix); 602 Spec->operands[operandIndex].type = typeFromString(typeName, 603 IsSSE, 604 HasREX_WPrefix, 605 HasOpSizePrefix); 606 607 ++operandIndex; 608 ++physicalOperandIndex; 609 } 610 611 void RecognizableInstr::emitInstructionSpecifier(DisassemblerTables &tables) { 612 Spec->name = Name; 613 614 if (!ShouldBeEmitted) 615 return; 616 617 switch (filter()) { 618 case FILTER_WEAK: 619 Spec->filtered = true; 620 break; 621 case FILTER_STRONG: 622 ShouldBeEmitted = false; 623 return; 624 case FILTER_NORMAL: 625 break; 626 } 627 628 Spec->insnContext = insnContext(); 629 630 const std::vector<CGIOperandList::OperandInfo> &OperandList = *Operands; 631 632 unsigned numOperands = OperandList.size(); 633 unsigned numPhysicalOperands = 0; 634 635 // operandMapping maps from operands in OperandList to their originals. 636 // If operandMapping[i] != i, then the entry is a duplicate. 637 unsigned operandMapping[X86_MAX_OPERANDS]; 638 assert(numOperands <= X86_MAX_OPERANDS && "X86_MAX_OPERANDS is not large enough"); 639 640 for (unsigned operandIndex = 0; operandIndex < numOperands; ++operandIndex) { 641 if (OperandList[operandIndex].Constraints.size()) { 642 const CGIOperandList::ConstraintInfo &Constraint = 643 OperandList[operandIndex].Constraints[0]; 644 if (Constraint.isTied()) { 645 operandMapping[operandIndex] = operandIndex; 646 operandMapping[Constraint.getTiedOperand()] = operandIndex; 647 } else { 648 ++numPhysicalOperands; 649 operandMapping[operandIndex] = operandIndex; 650 } 651 } else { 652 ++numPhysicalOperands; 653 operandMapping[operandIndex] = operandIndex; 654 } 655 } 656 657 #define HANDLE_OPERAND(class) \ 658 handleOperand(false, \ 659 operandIndex, \ 660 physicalOperandIndex, \ 661 numPhysicalOperands, \ 662 operandMapping, \ 663 class##EncodingFromString); 664 665 #define HANDLE_OPTIONAL(class) \ 666 handleOperand(true, \ 667 operandIndex, \ 668 physicalOperandIndex, \ 669 numPhysicalOperands, \ 670 operandMapping, \ 671 class##EncodingFromString); 672 673 // operandIndex should always be < numOperands 674 unsigned operandIndex = 0; 675 // physicalOperandIndex should always be < numPhysicalOperands 676 unsigned physicalOperandIndex = 0; 677 678 switch (Form) { 679 case X86Local::RawFrm: 680 // Operand 1 (optional) is an address or immediate. 681 // Operand 2 (optional) is an immediate. 682 assert(numPhysicalOperands <= 2 && 683 "Unexpected number of operands for RawFrm"); 684 HANDLE_OPTIONAL(relocation) 685 HANDLE_OPTIONAL(immediate) 686 break; 687 case X86Local::AddRegFrm: 688 // Operand 1 is added to the opcode. 689 // Operand 2 (optional) is an address. 690 assert(numPhysicalOperands >= 1 && numPhysicalOperands <= 2 && 691 "Unexpected number of operands for AddRegFrm"); 692 HANDLE_OPERAND(opcodeModifier) 693 HANDLE_OPTIONAL(relocation) 694 break; 695 case X86Local::MRMDestReg: 696 // Operand 1 is a register operand in the R/M field. 697 // Operand 2 is a register operand in the Reg/Opcode field. 698 // - In AVX, there is a register operand in the VEX.vvvv field here - 699 // Operand 3 (optional) is an immediate. 700 if (HasVEX_4VPrefix) 701 assert(numPhysicalOperands >= 3 && numPhysicalOperands <= 4 && 702 "Unexpected number of operands for MRMDestRegFrm with VEX_4V"); 703 else 704 assert(numPhysicalOperands >= 2 && numPhysicalOperands <= 3 && 705 "Unexpected number of operands for MRMDestRegFrm"); 706 707 HANDLE_OPERAND(rmRegister) 708 709 if (HasVEX_4VPrefix) 710 // FIXME: In AVX, the register below becomes the one encoded 711 // in ModRMVEX and the one above the one in the VEX.VVVV field 712 HANDLE_OPERAND(vvvvRegister) 713 714 HANDLE_OPERAND(roRegister) 715 HANDLE_OPTIONAL(immediate) 716 break; 717 case X86Local::MRMDestMem: 718 // Operand 1 is a memory operand (possibly SIB-extended) 719 // Operand 2 is a register operand in the Reg/Opcode field. 720 // - In AVX, there is a register operand in the VEX.vvvv field here - 721 // Operand 3 (optional) is an immediate. 722 if (HasVEX_4VPrefix) 723 assert(numPhysicalOperands >= 3 && numPhysicalOperands <= 4 && 724 "Unexpected number of operands for MRMDestMemFrm with VEX_4V"); 725 else 726 assert(numPhysicalOperands >= 2 && numPhysicalOperands <= 3 && 727 "Unexpected number of operands for MRMDestMemFrm"); 728 HANDLE_OPERAND(memory) 729 730 if (HasEVEX_K) 731 HANDLE_OPERAND(writemaskRegister) 732 733 if (HasVEX_4VPrefix) 734 // FIXME: In AVX, the register below becomes the one encoded 735 // in ModRMVEX and the one above the one in the VEX.VVVV field 736 HANDLE_OPERAND(vvvvRegister) 737 738 HANDLE_OPERAND(roRegister) 739 HANDLE_OPTIONAL(immediate) 740 break; 741 case X86Local::MRMSrcReg: 742 // Operand 1 is a register operand in the Reg/Opcode field. 743 // Operand 2 is a register operand in the R/M field. 744 // - In AVX, there is a register operand in the VEX.vvvv field here - 745 // Operand 3 (optional) is an immediate. 746 // Operand 4 (optional) is an immediate. 747 748 if (HasVEX_4VPrefix || HasVEX_4VOp3Prefix) 749 assert(numPhysicalOperands >= 3 && numPhysicalOperands <= 5 && 750 "Unexpected number of operands for MRMSrcRegFrm with VEX_4V"); 751 else 752 assert(numPhysicalOperands >= 2 && numPhysicalOperands <= 4 && 753 "Unexpected number of operands for MRMSrcRegFrm"); 754 755 HANDLE_OPERAND(roRegister) 756 757 if (HasEVEX_K) 758 HANDLE_OPERAND(writemaskRegister) 759 760 if (HasVEX_4VPrefix) 761 // FIXME: In AVX, the register below becomes the one encoded 762 // in ModRMVEX and the one above the one in the VEX.VVVV field 763 HANDLE_OPERAND(vvvvRegister) 764 765 if (HasMemOp4Prefix) 766 HANDLE_OPERAND(immediate) 767 768 HANDLE_OPERAND(rmRegister) 769 770 if (HasVEX_4VOp3Prefix) 771 HANDLE_OPERAND(vvvvRegister) 772 773 if (!HasMemOp4Prefix) 774 HANDLE_OPTIONAL(immediate) 775 HANDLE_OPTIONAL(immediate) // above might be a register in 7:4 776 HANDLE_OPTIONAL(immediate) 777 break; 778 case X86Local::MRMSrcMem: 779 // Operand 1 is a register operand in the Reg/Opcode field. 780 // Operand 2 is a memory operand (possibly SIB-extended) 781 // - In AVX, there is a register operand in the VEX.vvvv field here - 782 // Operand 3 (optional) is an immediate. 783 784 if (HasVEX_4VPrefix || HasVEX_4VOp3Prefix) 785 assert(numPhysicalOperands >= 3 && numPhysicalOperands <= 5 && 786 "Unexpected number of operands for MRMSrcMemFrm with VEX_4V"); 787 else 788 assert(numPhysicalOperands >= 2 && numPhysicalOperands <= 3 && 789 "Unexpected number of operands for MRMSrcMemFrm"); 790 791 HANDLE_OPERAND(roRegister) 792 793 if (HasEVEX_K) 794 HANDLE_OPERAND(writemaskRegister) 795 796 if (HasVEX_4VPrefix) 797 // FIXME: In AVX, the register below becomes the one encoded 798 // in ModRMVEX and the one above the one in the VEX.VVVV field 799 HANDLE_OPERAND(vvvvRegister) 800 801 if (HasMemOp4Prefix) 802 HANDLE_OPERAND(immediate) 803 804 HANDLE_OPERAND(memory) 805 806 if (HasVEX_4VOp3Prefix) 807 HANDLE_OPERAND(vvvvRegister) 808 809 if (!HasMemOp4Prefix) 810 HANDLE_OPTIONAL(immediate) 811 HANDLE_OPTIONAL(immediate) // above might be a register in 7:4 812 break; 813 case X86Local::MRM0r: 814 case X86Local::MRM1r: 815 case X86Local::MRM2r: 816 case X86Local::MRM3r: 817 case X86Local::MRM4r: 818 case X86Local::MRM5r: 819 case X86Local::MRM6r: 820 case X86Local::MRM7r: 821 // Operand 1 is a register operand in the R/M field. 822 // Operand 2 (optional) is an immediate or relocation. 823 // Operand 3 (optional) is an immediate. 824 if (HasVEX_4VPrefix) 825 assert(numPhysicalOperands <= 3 && 826 "Unexpected number of operands for MRMnRFrm with VEX_4V"); 827 else 828 assert(numPhysicalOperands <= 3 && 829 "Unexpected number of operands for MRMnRFrm"); 830 if (HasVEX_4VPrefix) 831 HANDLE_OPERAND(vvvvRegister) 832 HANDLE_OPTIONAL(rmRegister) 833 HANDLE_OPTIONAL(relocation) 834 HANDLE_OPTIONAL(immediate) 835 break; 836 case X86Local::MRM0m: 837 case X86Local::MRM1m: 838 case X86Local::MRM2m: 839 case X86Local::MRM3m: 840 case X86Local::MRM4m: 841 case X86Local::MRM5m: 842 case X86Local::MRM6m: 843 case X86Local::MRM7m: 844 // Operand 1 is a memory operand (possibly SIB-extended) 845 // Operand 2 (optional) is an immediate or relocation. 846 if (HasVEX_4VPrefix) 847 assert(numPhysicalOperands >= 2 && numPhysicalOperands <= 3 && 848 "Unexpected number of operands for MRMnMFrm"); 849 else 850 assert(numPhysicalOperands >= 1 && numPhysicalOperands <= 2 && 851 "Unexpected number of operands for MRMnMFrm"); 852 if (HasVEX_4VPrefix) 853 HANDLE_OPERAND(vvvvRegister) 854 HANDLE_OPERAND(memory) 855 HANDLE_OPTIONAL(relocation) 856 break; 857 case X86Local::RawFrmImm8: 858 // operand 1 is a 16-bit immediate 859 // operand 2 is an 8-bit immediate 860 assert(numPhysicalOperands == 2 && 861 "Unexpected number of operands for X86Local::RawFrmImm8"); 862 HANDLE_OPERAND(immediate) 863 HANDLE_OPERAND(immediate) 864 break; 865 case X86Local::RawFrmImm16: 866 // operand 1 is a 16-bit immediate 867 // operand 2 is a 16-bit immediate 868 HANDLE_OPERAND(immediate) 869 HANDLE_OPERAND(immediate) 870 break; 871 case X86Local::MRM_F8: 872 if (Opcode == 0xc6) { 873 assert(numPhysicalOperands == 1 && 874 "Unexpected number of operands for X86Local::MRM_F8"); 875 HANDLE_OPERAND(immediate) 876 } else if (Opcode == 0xc7) { 877 assert(numPhysicalOperands == 1 && 878 "Unexpected number of operands for X86Local::MRM_F8"); 879 HANDLE_OPERAND(relocation) 880 } 881 break; 882 case X86Local::MRMInitReg: 883 // Ignored. 884 break; 885 } 886 887 #undef HANDLE_OPERAND 888 #undef HANDLE_OPTIONAL 889 } 890 891 void RecognizableInstr::emitDecodePath(DisassemblerTables &tables) const { 892 // Special cases where the LLVM tables are not complete 893 894 #define MAP(from, to) \ 895 case X86Local::MRM_##from: \ 896 filter = new ExactFilter(0x##from); \ 897 break; 898 899 OpcodeType opcodeType = (OpcodeType)-1; 900 901 ModRMFilter* filter = NULL; 902 uint8_t opcodeToSet = 0; 903 904 switch (Prefix) { 905 // Extended two-byte opcodes can start with f2 0f, f3 0f, or 0f 906 case X86Local::XD: 907 case X86Local::XS: 908 case X86Local::TB: 909 opcodeType = TWOBYTE; 910 911 switch (Opcode) { 912 default: 913 if (needsModRMForDecode(Form)) 914 filter = new ModFilter(isRegFormat(Form)); 915 else 916 filter = new DumbFilter(); 917 break; 918 #define EXTENSION_TABLE(n) case 0x##n: 919 TWO_BYTE_EXTENSION_TABLES 920 #undef EXTENSION_TABLE 921 switch (Form) { 922 default: 923 llvm_unreachable("Unhandled two-byte extended opcode"); 924 case X86Local::MRM0r: 925 case X86Local::MRM1r: 926 case X86Local::MRM2r: 927 case X86Local::MRM3r: 928 case X86Local::MRM4r: 929 case X86Local::MRM5r: 930 case X86Local::MRM6r: 931 case X86Local::MRM7r: 932 filter = new ExtendedFilter(true, Form - X86Local::MRM0r); 933 break; 934 case X86Local::MRM0m: 935 case X86Local::MRM1m: 936 case X86Local::MRM2m: 937 case X86Local::MRM3m: 938 case X86Local::MRM4m: 939 case X86Local::MRM5m: 940 case X86Local::MRM6m: 941 case X86Local::MRM7m: 942 filter = new ExtendedFilter(false, Form - X86Local::MRM0m); 943 break; 944 MRM_MAPPING 945 } // switch (Form) 946 break; 947 } // switch (Opcode) 948 opcodeToSet = Opcode; 949 break; 950 case X86Local::T8: 951 case X86Local::T8XD: 952 case X86Local::T8XS: 953 opcodeType = THREEBYTE_38; 954 switch (Opcode) { 955 default: 956 if (needsModRMForDecode(Form)) 957 filter = new ModFilter(isRegFormat(Form)); 958 else 959 filter = new DumbFilter(); 960 break; 961 #define EXTENSION_TABLE(n) case 0x##n: 962 THREE_BYTE_38_EXTENSION_TABLES 963 #undef EXTENSION_TABLE 964 switch (Form) { 965 default: 966 llvm_unreachable("Unhandled two-byte extended opcode"); 967 case X86Local::MRM0r: 968 case X86Local::MRM1r: 969 case X86Local::MRM2r: 970 case X86Local::MRM3r: 971 case X86Local::MRM4r: 972 case X86Local::MRM5r: 973 case X86Local::MRM6r: 974 case X86Local::MRM7r: 975 filter = new ExtendedFilter(true, Form - X86Local::MRM0r); 976 break; 977 case X86Local::MRM0m: 978 case X86Local::MRM1m: 979 case X86Local::MRM2m: 980 case X86Local::MRM3m: 981 case X86Local::MRM4m: 982 case X86Local::MRM5m: 983 case X86Local::MRM6m: 984 case X86Local::MRM7m: 985 filter = new ExtendedFilter(false, Form - X86Local::MRM0m); 986 break; 987 MRM_MAPPING 988 } // switch (Form) 989 break; 990 } // switch (Opcode) 991 opcodeToSet = Opcode; 992 break; 993 case X86Local::P_TA: 994 case X86Local::TAXD: 995 opcodeType = THREEBYTE_3A; 996 if (needsModRMForDecode(Form)) 997 filter = new ModFilter(isRegFormat(Form)); 998 else 999 filter = new DumbFilter(); 1000 opcodeToSet = Opcode; 1001 break; 1002 case X86Local::A6: 1003 opcodeType = THREEBYTE_A6; 1004 if (needsModRMForDecode(Form)) 1005 filter = new ModFilter(isRegFormat(Form)); 1006 else 1007 filter = new DumbFilter(); 1008 opcodeToSet = Opcode; 1009 break; 1010 case X86Local::A7: 1011 opcodeType = THREEBYTE_A7; 1012 if (needsModRMForDecode(Form)) 1013 filter = new ModFilter(isRegFormat(Form)); 1014 else 1015 filter = new DumbFilter(); 1016 opcodeToSet = Opcode; 1017 break; 1018 case X86Local::D8: 1019 case X86Local::D9: 1020 case X86Local::DA: 1021 case X86Local::DB: 1022 case X86Local::DC: 1023 case X86Local::DD: 1024 case X86Local::DE: 1025 case X86Local::DF: 1026 assert(Opcode >= 0xc0 && "Unexpected opcode for an escape opcode"); 1027 opcodeType = ONEBYTE; 1028 if (Form == X86Local::AddRegFrm) { 1029 Spec->modifierType = MODIFIER_MODRM; 1030 Spec->modifierBase = Opcode; 1031 filter = new AddRegEscapeFilter(Opcode); 1032 } else { 1033 filter = new EscapeFilter(true, Opcode); 1034 } 1035 opcodeToSet = 0xd8 + (Prefix - X86Local::D8); 1036 break; 1037 case X86Local::REP: 1038 default: 1039 opcodeType = ONEBYTE; 1040 switch (Opcode) { 1041 #define EXTENSION_TABLE(n) case 0x##n: 1042 ONE_BYTE_EXTENSION_TABLES 1043 #undef EXTENSION_TABLE 1044 switch (Form) { 1045 default: 1046 llvm_unreachable("Fell through the cracks of a single-byte " 1047 "extended opcode"); 1048 case X86Local::MRM0r: 1049 case X86Local::MRM1r: 1050 case X86Local::MRM2r: 1051 case X86Local::MRM3r: 1052 case X86Local::MRM4r: 1053 case X86Local::MRM5r: 1054 case X86Local::MRM6r: 1055 case X86Local::MRM7r: 1056 filter = new ExtendedFilter(true, Form - X86Local::MRM0r); 1057 break; 1058 case X86Local::MRM0m: 1059 case X86Local::MRM1m: 1060 case X86Local::MRM2m: 1061 case X86Local::MRM3m: 1062 case X86Local::MRM4m: 1063 case X86Local::MRM5m: 1064 case X86Local::MRM6m: 1065 case X86Local::MRM7m: 1066 filter = new ExtendedFilter(false, Form - X86Local::MRM0m); 1067 break; 1068 MRM_MAPPING 1069 } // switch (Form) 1070 break; 1071 case 0xd8: 1072 case 0xd9: 1073 case 0xda: 1074 case 0xdb: 1075 case 0xdc: 1076 case 0xdd: 1077 case 0xde: 1078 case 0xdf: 1079 filter = new EscapeFilter(false, Form - X86Local::MRM0m); 1080 break; 1081 default: 1082 if (needsModRMForDecode(Form)) 1083 filter = new ModFilter(isRegFormat(Form)); 1084 else 1085 filter = new DumbFilter(); 1086 break; 1087 } // switch (Opcode) 1088 opcodeToSet = Opcode; 1089 } // switch (Prefix) 1090 1091 assert(opcodeType != (OpcodeType)-1 && 1092 "Opcode type not set"); 1093 assert(filter && "Filter not set"); 1094 1095 if (Form == X86Local::AddRegFrm) { 1096 if(Spec->modifierType != MODIFIER_MODRM) { 1097 assert(opcodeToSet < 0xf9 && 1098 "Not enough room for all ADDREG_FRM operands"); 1099 1100 uint8_t currentOpcode; 1101 1102 for (currentOpcode = opcodeToSet; 1103 currentOpcode < opcodeToSet + 8; 1104 ++currentOpcode) 1105 tables.setTableFields(opcodeType, 1106 insnContext(), 1107 currentOpcode, 1108 *filter, 1109 UID, Is32Bit, IgnoresVEX_L); 1110 1111 Spec->modifierType = MODIFIER_OPCODE; 1112 Spec->modifierBase = opcodeToSet; 1113 } else { 1114 // modifierBase was set where MODIFIER_MODRM was set 1115 tables.setTableFields(opcodeType, 1116 insnContext(), 1117 opcodeToSet, 1118 *filter, 1119 UID, Is32Bit, IgnoresVEX_L); 1120 } 1121 } else { 1122 tables.setTableFields(opcodeType, 1123 insnContext(), 1124 opcodeToSet, 1125 *filter, 1126 UID, Is32Bit, IgnoresVEX_L); 1127 1128 Spec->modifierType = MODIFIER_NONE; 1129 Spec->modifierBase = opcodeToSet; 1130 } 1131 1132 delete filter; 1133 1134 #undef MAP 1135 } 1136 1137 #define TYPE(str, type) if (s == str) return type; 1138 OperandType RecognizableInstr::typeFromString(const std::string &s, 1139 bool isSSE, 1140 bool hasREX_WPrefix, 1141 bool hasOpSizePrefix) { 1142 if (isSSE) { 1143 // For SSE instructions, we ignore the OpSize prefix and force operand 1144 // sizes. 1145 TYPE("GR16", TYPE_R16) 1146 TYPE("GR32", TYPE_R32) 1147 TYPE("GR64", TYPE_R64) 1148 } 1149 if(hasREX_WPrefix) { 1150 // For instructions with a REX_W prefix, a declared 32-bit register encoding 1151 // is special. 1152 TYPE("GR32", TYPE_R32) 1153 } 1154 if(!hasOpSizePrefix) { 1155 // For instructions without an OpSize prefix, a declared 16-bit register or 1156 // immediate encoding is special. 1157 TYPE("GR16", TYPE_R16) 1158 TYPE("i16imm", TYPE_IMM16) 1159 } 1160 TYPE("i16mem", TYPE_Mv) 1161 TYPE("i16imm", TYPE_IMMv) 1162 TYPE("i16i8imm", TYPE_IMMv) 1163 TYPE("GR16", TYPE_Rv) 1164 TYPE("i32mem", TYPE_Mv) 1165 TYPE("i32imm", TYPE_IMMv) 1166 TYPE("i32i8imm", TYPE_IMM32) 1167 TYPE("u32u8imm", TYPE_IMM32) 1168 TYPE("GR32", TYPE_Rv) 1169 TYPE("i64mem", TYPE_Mv) 1170 TYPE("i64i32imm", TYPE_IMM64) 1171 TYPE("i64i8imm", TYPE_IMM64) 1172 TYPE("GR64", TYPE_R64) 1173 TYPE("i8mem", TYPE_M8) 1174 TYPE("i8imm", TYPE_IMM8) 1175 TYPE("GR8", TYPE_R8) 1176 TYPE("VR128", TYPE_XMM128) 1177 TYPE("VR128X", TYPE_XMM128) 1178 TYPE("f128mem", TYPE_M128) 1179 TYPE("f256mem", TYPE_M256) 1180 TYPE("f512mem", TYPE_M512) 1181 TYPE("FR64", TYPE_XMM64) 1182 TYPE("FR64X", TYPE_XMM64) 1183 TYPE("f64mem", TYPE_M64FP) 1184 TYPE("sdmem", TYPE_M64FP) 1185 TYPE("FR32", TYPE_XMM32) 1186 TYPE("FR32X", TYPE_XMM32) 1187 TYPE("f32mem", TYPE_M32FP) 1188 TYPE("ssmem", TYPE_M32FP) 1189 TYPE("RST", TYPE_ST) 1190 TYPE("i128mem", TYPE_M128) 1191 TYPE("i256mem", TYPE_M256) 1192 TYPE("i512mem", TYPE_M512) 1193 TYPE("i64i32imm_pcrel", TYPE_REL64) 1194 TYPE("i16imm_pcrel", TYPE_REL16) 1195 TYPE("i32imm_pcrel", TYPE_REL32) 1196 TYPE("SSECC", TYPE_IMM3) 1197 TYPE("AVXCC", TYPE_IMM5) 1198 TYPE("brtarget", TYPE_RELv) 1199 TYPE("uncondbrtarget", TYPE_RELv) 1200 TYPE("brtarget8", TYPE_REL8) 1201 TYPE("f80mem", TYPE_M80FP) 1202 TYPE("lea32mem", TYPE_LEA) 1203 TYPE("lea64_32mem", TYPE_LEA) 1204 TYPE("lea64mem", TYPE_LEA) 1205 TYPE("VR64", TYPE_MM64) 1206 TYPE("i64imm", TYPE_IMMv) 1207 TYPE("opaque32mem", TYPE_M1616) 1208 TYPE("opaque48mem", TYPE_M1632) 1209 TYPE("opaque80mem", TYPE_M1664) 1210 TYPE("opaque512mem", TYPE_M512) 1211 TYPE("SEGMENT_REG", TYPE_SEGMENTREG) 1212 TYPE("DEBUG_REG", TYPE_DEBUGREG) 1213 TYPE("CONTROL_REG", TYPE_CONTROLREG) 1214 TYPE("offset8", TYPE_MOFFS8) 1215 TYPE("offset16", TYPE_MOFFS16) 1216 TYPE("offset32", TYPE_MOFFS32) 1217 TYPE("offset64", TYPE_MOFFS64) 1218 TYPE("VR256", TYPE_XMM256) 1219 TYPE("VR256X", TYPE_XMM256) 1220 TYPE("VR512", TYPE_XMM512) 1221 TYPE("VK8", TYPE_VK8) 1222 TYPE("VK8WM", TYPE_VK8) 1223 TYPE("VK16", TYPE_VK16) 1224 TYPE("VK16WM", TYPE_VK16) 1225 TYPE("GR16_NOAX", TYPE_Rv) 1226 TYPE("GR32_NOAX", TYPE_Rv) 1227 TYPE("GR64_NOAX", TYPE_R64) 1228 TYPE("vx32mem", TYPE_M32) 1229 TYPE("vy32mem", TYPE_M32) 1230 TYPE("vz32mem", TYPE_M32) 1231 TYPE("vx64mem", TYPE_M64) 1232 TYPE("vy64mem", TYPE_M64) 1233 TYPE("vy64xmem", TYPE_M64) 1234 TYPE("vz64mem", TYPE_M64) 1235 errs() << "Unhandled type string " << s << "\n"; 1236 llvm_unreachable("Unhandled type string"); 1237 } 1238 #undef TYPE 1239 1240 #define ENCODING(str, encoding) if (s == str) return encoding; 1241 OperandEncoding RecognizableInstr::immediateEncodingFromString 1242 (const std::string &s, 1243 bool hasOpSizePrefix) { 1244 if(!hasOpSizePrefix) { 1245 // For instructions without an OpSize prefix, a declared 16-bit register or 1246 // immediate encoding is special. 1247 ENCODING("i16imm", ENCODING_IW) 1248 } 1249 ENCODING("i32i8imm", ENCODING_IB) 1250 ENCODING("u32u8imm", ENCODING_IB) 1251 ENCODING("SSECC", ENCODING_IB) 1252 ENCODING("AVXCC", ENCODING_IB) 1253 ENCODING("i16imm", ENCODING_Iv) 1254 ENCODING("i16i8imm", ENCODING_IB) 1255 ENCODING("i32imm", ENCODING_Iv) 1256 ENCODING("i64i32imm", ENCODING_ID) 1257 ENCODING("i64i8imm", ENCODING_IB) 1258 ENCODING("i8imm", ENCODING_IB) 1259 // This is not a typo. Instructions like BLENDVPD put 1260 // register IDs in 8-bit immediates nowadays. 1261 ENCODING("FR32", ENCODING_IB) 1262 ENCODING("FR64", ENCODING_IB) 1263 ENCODING("VR128", ENCODING_IB) 1264 ENCODING("VR256", ENCODING_IB) 1265 ENCODING("FR32X", ENCODING_IB) 1266 ENCODING("FR64X", ENCODING_IB) 1267 ENCODING("VR128X", ENCODING_IB) 1268 ENCODING("VR256X", ENCODING_IB) 1269 ENCODING("VR512", ENCODING_IB) 1270 errs() << "Unhandled immediate encoding " << s << "\n"; 1271 llvm_unreachable("Unhandled immediate encoding"); 1272 } 1273 1274 OperandEncoding RecognizableInstr::rmRegisterEncodingFromString 1275 (const std::string &s, 1276 bool hasOpSizePrefix) { 1277 ENCODING("GR16", ENCODING_RM) 1278 ENCODING("GR32", ENCODING_RM) 1279 ENCODING("GR64", ENCODING_RM) 1280 ENCODING("GR8", ENCODING_RM) 1281 ENCODING("VR128", ENCODING_RM) 1282 ENCODING("VR128X", ENCODING_RM) 1283 ENCODING("FR64", ENCODING_RM) 1284 ENCODING("FR32", ENCODING_RM) 1285 ENCODING("FR64X", ENCODING_RM) 1286 ENCODING("FR32X", ENCODING_RM) 1287 ENCODING("VR64", ENCODING_RM) 1288 ENCODING("VR256", ENCODING_RM) 1289 ENCODING("VR256X", ENCODING_RM) 1290 ENCODING("VR512", ENCODING_RM) 1291 ENCODING("VK8", ENCODING_RM) 1292 ENCODING("VK16", ENCODING_RM) 1293 errs() << "Unhandled R/M register encoding " << s << "\n"; 1294 llvm_unreachable("Unhandled R/M register encoding"); 1295 } 1296 1297 OperandEncoding RecognizableInstr::roRegisterEncodingFromString 1298 (const std::string &s, 1299 bool hasOpSizePrefix) { 1300 ENCODING("GR16", ENCODING_REG) 1301 ENCODING("GR32", ENCODING_REG) 1302 ENCODING("GR64", ENCODING_REG) 1303 ENCODING("GR8", ENCODING_REG) 1304 ENCODING("VR128", ENCODING_REG) 1305 ENCODING("FR64", ENCODING_REG) 1306 ENCODING("FR32", ENCODING_REG) 1307 ENCODING("VR64", ENCODING_REG) 1308 ENCODING("SEGMENT_REG", ENCODING_REG) 1309 ENCODING("DEBUG_REG", ENCODING_REG) 1310 ENCODING("CONTROL_REG", ENCODING_REG) 1311 ENCODING("VR256", ENCODING_REG) 1312 ENCODING("VR256X", ENCODING_REG) 1313 ENCODING("VR128X", ENCODING_REG) 1314 ENCODING("FR64X", ENCODING_REG) 1315 ENCODING("FR32X", ENCODING_REG) 1316 ENCODING("VR512", ENCODING_REG) 1317 ENCODING("VK8", ENCODING_REG) 1318 ENCODING("VK16", ENCODING_REG) 1319 ENCODING("VK8WM", ENCODING_REG) 1320 ENCODING("VK16WM", ENCODING_REG) 1321 errs() << "Unhandled reg/opcode register encoding " << s << "\n"; 1322 llvm_unreachable("Unhandled reg/opcode register encoding"); 1323 } 1324 1325 OperandEncoding RecognizableInstr::vvvvRegisterEncodingFromString 1326 (const std::string &s, 1327 bool hasOpSizePrefix) { 1328 ENCODING("GR32", ENCODING_VVVV) 1329 ENCODING("GR64", ENCODING_VVVV) 1330 ENCODING("FR32", ENCODING_VVVV) 1331 ENCODING("FR64", ENCODING_VVVV) 1332 ENCODING("VR128", ENCODING_VVVV) 1333 ENCODING("VR256", ENCODING_VVVV) 1334 ENCODING("FR32X", ENCODING_VVVV) 1335 ENCODING("FR64X", ENCODING_VVVV) 1336 ENCODING("VR128X", ENCODING_VVVV) 1337 ENCODING("VR256X", ENCODING_VVVV) 1338 ENCODING("VR512", ENCODING_VVVV) 1339 ENCODING("VK8", ENCODING_VVVV) 1340 ENCODING("VK16", ENCODING_VVVV) 1341 errs() << "Unhandled VEX.vvvv register encoding " << s << "\n"; 1342 llvm_unreachable("Unhandled VEX.vvvv register encoding"); 1343 } 1344 1345 OperandEncoding RecognizableInstr::writemaskRegisterEncodingFromString 1346 (const std::string &s, 1347 bool hasOpSizePrefix) { 1348 ENCODING("VK8WM", ENCODING_WRITEMASK) 1349 ENCODING("VK16WM", ENCODING_WRITEMASK) 1350 errs() << "Unhandled mask register encoding " << s << "\n"; 1351 llvm_unreachable("Unhandled mask register encoding"); 1352 } 1353 1354 OperandEncoding RecognizableInstr::memoryEncodingFromString 1355 (const std::string &s, 1356 bool hasOpSizePrefix) { 1357 ENCODING("i16mem", ENCODING_RM) 1358 ENCODING("i32mem", ENCODING_RM) 1359 ENCODING("i64mem", ENCODING_RM) 1360 ENCODING("i8mem", ENCODING_RM) 1361 ENCODING("ssmem", ENCODING_RM) 1362 ENCODING("sdmem", ENCODING_RM) 1363 ENCODING("f128mem", ENCODING_RM) 1364 ENCODING("f256mem", ENCODING_RM) 1365 ENCODING("f512mem", ENCODING_RM) 1366 ENCODING("f64mem", ENCODING_RM) 1367 ENCODING("f32mem", ENCODING_RM) 1368 ENCODING("i128mem", ENCODING_RM) 1369 ENCODING("i256mem", ENCODING_RM) 1370 ENCODING("i512mem", ENCODING_RM) 1371 ENCODING("f80mem", ENCODING_RM) 1372 ENCODING("lea32mem", ENCODING_RM) 1373 ENCODING("lea64_32mem", ENCODING_RM) 1374 ENCODING("lea64mem", ENCODING_RM) 1375 ENCODING("opaque32mem", ENCODING_RM) 1376 ENCODING("opaque48mem", ENCODING_RM) 1377 ENCODING("opaque80mem", ENCODING_RM) 1378 ENCODING("opaque512mem", ENCODING_RM) 1379 ENCODING("vx32mem", ENCODING_RM) 1380 ENCODING("vy32mem", ENCODING_RM) 1381 ENCODING("vz32mem", ENCODING_RM) 1382 ENCODING("vx64mem", ENCODING_RM) 1383 ENCODING("vy64mem", ENCODING_RM) 1384 ENCODING("vy64xmem", ENCODING_RM) 1385 ENCODING("vz64mem", ENCODING_RM) 1386 errs() << "Unhandled memory encoding " << s << "\n"; 1387 llvm_unreachable("Unhandled memory encoding"); 1388 } 1389 1390 OperandEncoding RecognizableInstr::relocationEncodingFromString 1391 (const std::string &s, 1392 bool hasOpSizePrefix) { 1393 if(!hasOpSizePrefix) { 1394 // For instructions without an OpSize prefix, a declared 16-bit register or 1395 // immediate encoding is special. 1396 ENCODING("i16imm", ENCODING_IW) 1397 } 1398 ENCODING("i16imm", ENCODING_Iv) 1399 ENCODING("i16i8imm", ENCODING_IB) 1400 ENCODING("i32imm", ENCODING_Iv) 1401 ENCODING("i32i8imm", ENCODING_IB) 1402 ENCODING("i64i32imm", ENCODING_ID) 1403 ENCODING("i64i8imm", ENCODING_IB) 1404 ENCODING("i8imm", ENCODING_IB) 1405 ENCODING("i64i32imm_pcrel", ENCODING_ID) 1406 ENCODING("i16imm_pcrel", ENCODING_IW) 1407 ENCODING("i32imm_pcrel", ENCODING_ID) 1408 ENCODING("brtarget", ENCODING_Iv) 1409 ENCODING("brtarget8", ENCODING_IB) 1410 ENCODING("i64imm", ENCODING_IO) 1411 ENCODING("offset8", ENCODING_Ia) 1412 ENCODING("offset16", ENCODING_Ia) 1413 ENCODING("offset32", ENCODING_Ia) 1414 ENCODING("offset64", ENCODING_Ia) 1415 errs() << "Unhandled relocation encoding " << s << "\n"; 1416 llvm_unreachable("Unhandled relocation encoding"); 1417 } 1418 1419 OperandEncoding RecognizableInstr::opcodeModifierEncodingFromString 1420 (const std::string &s, 1421 bool hasOpSizePrefix) { 1422 ENCODING("RST", ENCODING_I) 1423 ENCODING("GR32", ENCODING_Rv) 1424 ENCODING("GR64", ENCODING_RO) 1425 ENCODING("GR16", ENCODING_Rv) 1426 ENCODING("GR8", ENCODING_RB) 1427 ENCODING("GR16_NOAX", ENCODING_Rv) 1428 ENCODING("GR32_NOAX", ENCODING_Rv) 1429 ENCODING("GR64_NOAX", ENCODING_RO) 1430 errs() << "Unhandled opcode modifier encoding " << s << "\n"; 1431 llvm_unreachable("Unhandled opcode modifier encoding"); 1432 } 1433 #undef ENCODING 1434