X86RecognizableInstr.cpp revision 7f76cb6666194d7269bbd6ee0966eacc709dd10a
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 "X86DisassemblerShared.h" 18#include "X86RecognizableInstr.h" 19#include "X86ModRMFilters.h" 20 21#include "llvm/Support/ErrorHandling.h" 22 23#include <string> 24 25using namespace llvm; 26 27#define MRM_MAPPING \ 28 MAP(C1, 33) \ 29 MAP(C2, 34) \ 30 MAP(C3, 35) \ 31 MAP(C4, 36) \ 32 MAP(C8, 37) \ 33 MAP(C9, 38) \ 34 MAP(E8, 39) \ 35 MAP(F0, 40) \ 36 MAP(F8, 41) \ 37 MAP(F9, 42) \ 38 MAP(D0, 45) \ 39 MAP(D1, 46) \ 40 MAP(D4, 47) \ 41 MAP(D8, 48) \ 42 MAP(D9, 49) \ 43 MAP(DA, 50) \ 44 MAP(DB, 51) \ 45 MAP(DC, 52) \ 46 MAP(DD, 53) \ 47 MAP(DE, 54) \ 48 MAP(DF, 55) 49 50// A clone of X86 since we can't depend on something that is generated. 51namespace X86Local { 52 enum { 53 Pseudo = 0, 54 RawFrm = 1, 55 AddRegFrm = 2, 56 MRMDestReg = 3, 57 MRMDestMem = 4, 58 MRMSrcReg = 5, 59 MRMSrcMem = 6, 60 MRM0r = 16, MRM1r = 17, MRM2r = 18, MRM3r = 19, 61 MRM4r = 20, MRM5r = 21, MRM6r = 22, MRM7r = 23, 62 MRM0m = 24, MRM1m = 25, MRM2m = 26, MRM3m = 27, 63 MRM4m = 28, MRM5m = 29, MRM6m = 30, MRM7m = 31, 64 MRMInitReg = 32, 65 RawFrmImm8 = 43, 66 RawFrmImm16 = 44, 67#define MAP(from, to) MRM_##from = to, 68 MRM_MAPPING 69#undef MAP 70 lastMRM 71 }; 72 73 enum { 74 TB = 1, 75 REP = 2, 76 D8 = 3, D9 = 4, DA = 5, DB = 6, 77 DC = 7, DD = 8, DE = 9, DF = 10, 78 XD = 11, XS = 12, 79 T8 = 13, P_TA = 14, 80 A6 = 15, A7 = 16, T8XD = 17, T8XS = 18, TAXD = 19 81 }; 82} 83 84// If rows are added to the opcode extension tables, then corresponding entries 85// must be added here. 86// 87// If the row corresponds to a single byte (i.e., 8f), then add an entry for 88// that byte to ONE_BYTE_EXTENSION_TABLES. 89// 90// If the row corresponds to two bytes where the first is 0f, add an entry for 91// the second byte to TWO_BYTE_EXTENSION_TABLES. 92// 93// If the row corresponds to some other set of bytes, you will need to modify 94// the code in RecognizableInstr::emitDecodePath() as well, and add new prefixes 95// to the X86 TD files, except in two cases: if the first two bytes of such a 96// new combination are 0f 38 or 0f 3a, you just have to add maps called 97// THREE_BYTE_38_EXTENSION_TABLES and THREE_BYTE_3A_EXTENSION_TABLES and add a 98// switch(Opcode) just below the case X86Local::T8: or case X86Local::TA: line 99// in RecognizableInstr::emitDecodePath(). 100 101#define ONE_BYTE_EXTENSION_TABLES \ 102 EXTENSION_TABLE(80) \ 103 EXTENSION_TABLE(81) \ 104 EXTENSION_TABLE(82) \ 105 EXTENSION_TABLE(83) \ 106 EXTENSION_TABLE(8f) \ 107 EXTENSION_TABLE(c0) \ 108 EXTENSION_TABLE(c1) \ 109 EXTENSION_TABLE(c6) \ 110 EXTENSION_TABLE(c7) \ 111 EXTENSION_TABLE(d0) \ 112 EXTENSION_TABLE(d1) \ 113 EXTENSION_TABLE(d2) \ 114 EXTENSION_TABLE(d3) \ 115 EXTENSION_TABLE(f6) \ 116 EXTENSION_TABLE(f7) \ 117 EXTENSION_TABLE(fe) \ 118 EXTENSION_TABLE(ff) 119 120#define TWO_BYTE_EXTENSION_TABLES \ 121 EXTENSION_TABLE(00) \ 122 EXTENSION_TABLE(01) \ 123 EXTENSION_TABLE(18) \ 124 EXTENSION_TABLE(71) \ 125 EXTENSION_TABLE(72) \ 126 EXTENSION_TABLE(73) \ 127 EXTENSION_TABLE(ae) \ 128 EXTENSION_TABLE(ba) \ 129 EXTENSION_TABLE(c7) 130 131#define THREE_BYTE_38_EXTENSION_TABLES \ 132 EXTENSION_TABLE(F3) 133 134using namespace X86Disassembler; 135 136/// needsModRMForDecode - Indicates whether a particular instruction requires a 137/// ModR/M byte for the instruction to be properly decoded. For example, a 138/// MRMDestReg instruction needs the Mod field in the ModR/M byte to be set to 139/// 0b11. 140/// 141/// @param form - The form of the instruction. 142/// @return - true if the form implies that a ModR/M byte is required, false 143/// otherwise. 144static bool needsModRMForDecode(uint8_t form) { 145 if (form == X86Local::MRMDestReg || 146 form == X86Local::MRMDestMem || 147 form == X86Local::MRMSrcReg || 148 form == X86Local::MRMSrcMem || 149 (form >= X86Local::MRM0r && form <= X86Local::MRM7r) || 150 (form >= X86Local::MRM0m && form <= X86Local::MRM7m)) 151 return true; 152 else 153 return false; 154} 155 156/// isRegFormat - Indicates whether a particular form requires the Mod field of 157/// the ModR/M byte to be 0b11. 158/// 159/// @param form - The form of the instruction. 160/// @return - true if the form implies that Mod must be 0b11, false 161/// otherwise. 162static bool isRegFormat(uint8_t form) { 163 if (form == X86Local::MRMDestReg || 164 form == X86Local::MRMSrcReg || 165 (form >= X86Local::MRM0r && form <= X86Local::MRM7r)) 166 return true; 167 else 168 return false; 169} 170 171/// byteFromBitsInit - Extracts a value at most 8 bits in width from a BitsInit. 172/// Useful for switch statements and the like. 173/// 174/// @param init - A reference to the BitsInit to be decoded. 175/// @return - The field, with the first bit in the BitsInit as the lowest 176/// order bit. 177static uint8_t byteFromBitsInit(BitsInit &init) { 178 int width = init.getNumBits(); 179 180 assert(width <= 8 && "Field is too large for uint8_t!"); 181 182 int index; 183 uint8_t mask = 0x01; 184 185 uint8_t ret = 0; 186 187 for (index = 0; index < width; index++) { 188 if (static_cast<BitInit*>(init.getBit(index))->getValue()) 189 ret |= mask; 190 191 mask <<= 1; 192 } 193 194 return ret; 195} 196 197/// byteFromRec - Extract a value at most 8 bits in with from a Record given the 198/// name of the field. 199/// 200/// @param rec - The record from which to extract the value. 201/// @param name - The name of the field in the record. 202/// @return - The field, as translated by byteFromBitsInit(). 203static uint8_t byteFromRec(const Record* rec, const std::string &name) { 204 BitsInit* bits = rec->getValueAsBitsInit(name); 205 return byteFromBitsInit(*bits); 206} 207 208RecognizableInstr::RecognizableInstr(DisassemblerTables &tables, 209 const CodeGenInstruction &insn, 210 InstrUID uid) { 211 UID = uid; 212 213 Rec = insn.TheDef; 214 Name = Rec->getName(); 215 Spec = &tables.specForUID(UID); 216 217 if (!Rec->isSubClassOf("X86Inst")) { 218 ShouldBeEmitted = false; 219 return; 220 } 221 222 Prefix = byteFromRec(Rec, "Prefix"); 223 Opcode = byteFromRec(Rec, "Opcode"); 224 Form = byteFromRec(Rec, "FormBits"); 225 SegOvr = byteFromRec(Rec, "SegOvrBits"); 226 227 HasOpSizePrefix = Rec->getValueAsBit("hasOpSizePrefix"); 228 HasAdSizePrefix = Rec->getValueAsBit("hasAdSizePrefix"); 229 HasREX_WPrefix = Rec->getValueAsBit("hasREX_WPrefix"); 230 HasVEXPrefix = Rec->getValueAsBit("hasVEXPrefix"); 231 HasVEX_4VPrefix = Rec->getValueAsBit("hasVEX_4VPrefix"); 232 HasVEX_4VOp3Prefix = Rec->getValueAsBit("hasVEX_4VOp3Prefix"); 233 HasVEX_WPrefix = Rec->getValueAsBit("hasVEX_WPrefix"); 234 HasMemOp4Prefix = Rec->getValueAsBit("hasMemOp4Prefix"); 235 IgnoresVEX_L = Rec->getValueAsBit("ignoresVEX_L"); 236 HasLockPrefix = Rec->getValueAsBit("hasLockPrefix"); 237 IsCodeGenOnly = Rec->getValueAsBit("isCodeGenOnly"); 238 239 Name = Rec->getName(); 240 AsmString = Rec->getValueAsString("AsmString"); 241 242 Operands = &insn.Operands.OperandList; 243 244 IsSSE = (HasOpSizePrefix && (Name.find("16") == Name.npos)) || 245 (Name.find("CRC32") != Name.npos); 246 HasFROperands = hasFROperands(); 247 HasVEX_LPrefix = has256BitOperands() || Rec->getValueAsBit("hasVEX_L"); 248 249 // Check for 64-bit inst which does not require REX 250 Is32Bit = false; 251 Is64Bit = false; 252 // FIXME: Is there some better way to check for In64BitMode? 253 std::vector<Record*> Predicates = Rec->getValueAsListOfDefs("Predicates"); 254 for (unsigned i = 0, e = Predicates.size(); i != e; ++i) { 255 if (Predicates[i]->getName().find("32Bit") != Name.npos) { 256 Is32Bit = true; 257 break; 258 } 259 if (Predicates[i]->getName().find("64Bit") != Name.npos) { 260 Is64Bit = true; 261 break; 262 } 263 } 264 // FIXME: These instructions aren't marked as 64-bit in any way 265 Is64Bit |= Rec->getName() == "JMP64pcrel32" || 266 Rec->getName() == "MASKMOVDQU64" || 267 Rec->getName() == "POPFS64" || 268 Rec->getName() == "POPGS64" || 269 Rec->getName() == "PUSHFS64" || 270 Rec->getName() == "PUSHGS64" || 271 Rec->getName() == "REX64_PREFIX" || 272 Rec->getName().find("MOV64") != Name.npos || 273 Rec->getName().find("PUSH64") != Name.npos || 274 Rec->getName().find("POP64") != Name.npos; 275 276 ShouldBeEmitted = true; 277} 278 279void RecognizableInstr::processInstr(DisassemblerTables &tables, 280 const CodeGenInstruction &insn, 281 InstrUID uid) 282{ 283 // Ignore "asm parser only" instructions. 284 if (insn.TheDef->getValueAsBit("isAsmParserOnly")) 285 return; 286 287 RecognizableInstr recogInstr(tables, insn, uid); 288 289 recogInstr.emitInstructionSpecifier(tables); 290 291 if (recogInstr.shouldBeEmitted()) 292 recogInstr.emitDecodePath(tables); 293} 294 295InstructionContext RecognizableInstr::insnContext() const { 296 InstructionContext insnContext; 297 298 if (HasVEX_4VPrefix || HasVEX_4VOp3Prefix|| HasVEXPrefix) { 299 if (HasVEX_LPrefix && HasVEX_WPrefix) { 300 if (HasOpSizePrefix) 301 insnContext = IC_VEX_L_W_OPSIZE; 302 else 303 llvm_unreachable("Don't support VEX.L and VEX.W together"); 304 } else if (HasOpSizePrefix && HasVEX_LPrefix) 305 insnContext = IC_VEX_L_OPSIZE; 306 else if (HasOpSizePrefix && HasVEX_WPrefix) 307 insnContext = IC_VEX_W_OPSIZE; 308 else if (HasOpSizePrefix) 309 insnContext = IC_VEX_OPSIZE; 310 else if (HasVEX_LPrefix && 311 (Prefix == X86Local::XS || Prefix == X86Local::T8XS)) 312 insnContext = IC_VEX_L_XS; 313 else if (HasVEX_LPrefix && (Prefix == X86Local::XD || 314 Prefix == X86Local::T8XD || 315 Prefix == X86Local::TAXD)) 316 insnContext = IC_VEX_L_XD; 317 else if (HasVEX_WPrefix && 318 (Prefix == X86Local::XS || Prefix == X86Local::T8XS)) 319 insnContext = IC_VEX_W_XS; 320 else if (HasVEX_WPrefix && (Prefix == X86Local::XD || 321 Prefix == X86Local::T8XD || 322 Prefix == X86Local::TAXD)) 323 insnContext = IC_VEX_W_XD; 324 else if (HasVEX_WPrefix) 325 insnContext = IC_VEX_W; 326 else if (HasVEX_LPrefix) 327 insnContext = IC_VEX_L; 328 else if (Prefix == X86Local::XD || Prefix == X86Local::T8XD || 329 Prefix == X86Local::TAXD) 330 insnContext = IC_VEX_XD; 331 else if (Prefix == X86Local::XS || Prefix == X86Local::T8XS) 332 insnContext = IC_VEX_XS; 333 else 334 insnContext = IC_VEX; 335 } else if (Is64Bit || HasREX_WPrefix) { 336 if (HasREX_WPrefix && HasOpSizePrefix) 337 insnContext = IC_64BIT_REXW_OPSIZE; 338 else if (HasOpSizePrefix && (Prefix == X86Local::XD || 339 Prefix == X86Local::T8XD || 340 Prefix == X86Local::TAXD)) 341 insnContext = IC_64BIT_XD_OPSIZE; 342 else if (HasOpSizePrefix && 343 (Prefix == X86Local::XS || Prefix == X86Local::T8XS)) 344 insnContext = IC_64BIT_XS_OPSIZE; 345 else if (HasOpSizePrefix) 346 insnContext = IC_64BIT_OPSIZE; 347 else if (HasAdSizePrefix) 348 insnContext = IC_64BIT_ADSIZE; 349 else if (HasREX_WPrefix && 350 (Prefix == X86Local::XS || Prefix == X86Local::T8XS)) 351 insnContext = IC_64BIT_REXW_XS; 352 else if (HasREX_WPrefix && (Prefix == X86Local::XD || 353 Prefix == X86Local::T8XD || 354 Prefix == X86Local::TAXD)) 355 insnContext = IC_64BIT_REXW_XD; 356 else if (Prefix == X86Local::XD || Prefix == X86Local::T8XD || 357 Prefix == X86Local::TAXD) 358 insnContext = IC_64BIT_XD; 359 else if (Prefix == X86Local::XS || Prefix == X86Local::T8XS) 360 insnContext = IC_64BIT_XS; 361 else if (HasREX_WPrefix) 362 insnContext = IC_64BIT_REXW; 363 else 364 insnContext = IC_64BIT; 365 } else { 366 if (HasOpSizePrefix && (Prefix == X86Local::XD || 367 Prefix == X86Local::T8XD || 368 Prefix == X86Local::TAXD)) 369 insnContext = IC_XD_OPSIZE; 370 else if (HasOpSizePrefix && 371 (Prefix == X86Local::XS || Prefix == X86Local::T8XS)) 372 insnContext = IC_XS_OPSIZE; 373 else if (HasOpSizePrefix) 374 insnContext = IC_OPSIZE; 375 else if (HasAdSizePrefix) 376 insnContext = IC_ADSIZE; 377 else if (Prefix == X86Local::XD || Prefix == X86Local::T8XD || 378 Prefix == X86Local::TAXD) 379 insnContext = IC_XD; 380 else if (Prefix == X86Local::XS || Prefix == X86Local::T8XS || 381 Prefix == X86Local::REP) 382 insnContext = IC_XS; 383 else 384 insnContext = IC; 385 } 386 387 return insnContext; 388} 389 390RecognizableInstr::filter_ret RecognizableInstr::filter() const { 391 /////////////////// 392 // FILTER_STRONG 393 // 394 395 // Filter out intrinsics 396 397 if (!Rec->isSubClassOf("X86Inst")) 398 return FILTER_STRONG; 399 400 if (Form == X86Local::Pseudo || 401 (IsCodeGenOnly && Name.find("_REV") == Name.npos)) 402 return FILTER_STRONG; 403 404 if (Form == X86Local::MRMInitReg) 405 return FILTER_STRONG; 406 407 408 // Filter out artificial instructions but leave in the LOCK_PREFIX so it is 409 // printed as a separate "instruction". 410 411 if (Name.find("_Int") != Name.npos || 412 Name.find("Int_") != Name.npos || 413 Name.find("_NOREX") != Name.npos) 414 return FILTER_STRONG; 415 416 // Filter out instructions with segment override prefixes. 417 // They're too messy to handle now and we'll special case them if needed. 418 419 if (SegOvr) 420 return FILTER_STRONG; 421 422 // Filter out instructions that can't be printed. 423 424 if (AsmString.size() == 0) 425 return FILTER_STRONG; 426 427 // Filter out instructions with subreg operands. 428 429 if (AsmString.find("subreg") != AsmString.npos) 430 return FILTER_STRONG; 431 432 ///////////////// 433 // FILTER_WEAK 434 // 435 436 437 // Filter out instructions with a LOCK prefix; 438 // prefer forms that do not have the prefix 439 if (HasLockPrefix) 440 return FILTER_WEAK; 441 442 // Filter out alternate forms of AVX instructions 443 if (Name.find("_alt") != Name.npos || 444 Name.find("XrYr") != Name.npos || 445 (Name.find("r64r") != Name.npos && Name.find("r64r64") == Name.npos) || 446 Name.find("_64mr") != Name.npos || 447 Name.find("Xrr") != Name.npos || 448 Name.find("rr64") != Name.npos) 449 return FILTER_WEAK; 450 451 // Special cases. 452 453 if (Name.find("PCMPISTRI") != Name.npos && Name != "PCMPISTRI") 454 return FILTER_WEAK; 455 if (Name.find("PCMPESTRI") != Name.npos && Name != "PCMPESTRI") 456 return FILTER_WEAK; 457 458 if (Name.find("MOV") != Name.npos && Name.find("r0") != Name.npos) 459 return FILTER_WEAK; 460 if (Name.find("MOVZ") != Name.npos && Name.find("MOVZX") == Name.npos) 461 return FILTER_WEAK; 462 if (Name.find("Fs") != Name.npos) 463 return FILTER_WEAK; 464 if (Name == "PUSH64i16" || 465 Name == "MOVPQI2QImr" || 466 Name == "VMOVPQI2QImr" || 467 Name == "MMX_MOVD64rrv164" || 468 Name == "MOV64ri64i32" || 469 Name == "VMASKMOVDQU64" || 470 Name == "VEXTRACTPSrr64" || 471 Name == "VMOVQd64rr" || 472 Name == "VMOVQs64rr") 473 return FILTER_WEAK; 474 475 if (HasFROperands && Name.find("MOV") != Name.npos && 476 ((Name.find("2") != Name.npos && Name.find("32") == Name.npos) || 477 (Name.find("to") != Name.npos))) 478 return FILTER_WEAK; 479 480 return FILTER_NORMAL; 481} 482 483bool RecognizableInstr::hasFROperands() const { 484 const std::vector<CGIOperandList::OperandInfo> &OperandList = *Operands; 485 unsigned numOperands = OperandList.size(); 486 487 for (unsigned operandIndex = 0; operandIndex < numOperands; ++operandIndex) { 488 const std::string &recName = OperandList[operandIndex].Rec->getName(); 489 490 if (recName.find("FR") != recName.npos) 491 return true; 492 } 493 return false; 494} 495 496bool RecognizableInstr::has256BitOperands() const { 497 const std::vector<CGIOperandList::OperandInfo> &OperandList = *Operands; 498 unsigned numOperands = OperandList.size(); 499 500 for (unsigned operandIndex = 0; operandIndex < numOperands; ++operandIndex) { 501 const std::string &recName = OperandList[operandIndex].Rec->getName(); 502 503 if (!recName.compare("VR256") || !recName.compare("f256mem")) { 504 return true; 505 } 506 } 507 return false; 508} 509 510void RecognizableInstr::handleOperand(bool optional, unsigned &operandIndex, 511 unsigned &physicalOperandIndex, 512 unsigned &numPhysicalOperands, 513 const unsigned *operandMapping, 514 OperandEncoding (*encodingFromString) 515 (const std::string&, 516 bool hasOpSizePrefix)) { 517 if (optional) { 518 if (physicalOperandIndex >= numPhysicalOperands) 519 return; 520 } else { 521 assert(physicalOperandIndex < numPhysicalOperands); 522 } 523 524 while (operandMapping[operandIndex] != operandIndex) { 525 Spec->operands[operandIndex].encoding = ENCODING_DUP; 526 Spec->operands[operandIndex].type = 527 (OperandType)(TYPE_DUP0 + operandMapping[operandIndex]); 528 ++operandIndex; 529 } 530 531 const std::string &typeName = (*Operands)[operandIndex].Rec->getName(); 532 533 Spec->operands[operandIndex].encoding = encodingFromString(typeName, 534 HasOpSizePrefix); 535 Spec->operands[operandIndex].type = typeFromString(typeName, 536 IsSSE, 537 HasREX_WPrefix, 538 HasOpSizePrefix); 539 540 ++operandIndex; 541 ++physicalOperandIndex; 542} 543 544void RecognizableInstr::emitInstructionSpecifier(DisassemblerTables &tables) { 545 Spec->name = Name; 546 547 if (!Rec->isSubClassOf("X86Inst")) 548 return; 549 550 switch (filter()) { 551 case FILTER_WEAK: 552 Spec->filtered = true; 553 break; 554 case FILTER_STRONG: 555 ShouldBeEmitted = false; 556 return; 557 case FILTER_NORMAL: 558 break; 559 } 560 561 Spec->insnContext = insnContext(); 562 563 const std::vector<CGIOperandList::OperandInfo> &OperandList = *Operands; 564 565 unsigned numOperands = OperandList.size(); 566 unsigned numPhysicalOperands = 0; 567 568 // operandMapping maps from operands in OperandList to their originals. 569 // If operandMapping[i] != i, then the entry is a duplicate. 570 unsigned operandMapping[X86_MAX_OPERANDS]; 571 572 bool hasFROperands = false; 573 574 assert(numOperands <= X86_MAX_OPERANDS && "X86_MAX_OPERANDS is not large enough"); 575 576 for (unsigned operandIndex = 0; operandIndex < numOperands; ++operandIndex) { 577 if (OperandList[operandIndex].Constraints.size()) { 578 const CGIOperandList::ConstraintInfo &Constraint = 579 OperandList[operandIndex].Constraints[0]; 580 if (Constraint.isTied()) { 581 operandMapping[operandIndex] = operandIndex; 582 operandMapping[Constraint.getTiedOperand()] = operandIndex; 583 } else { 584 ++numPhysicalOperands; 585 operandMapping[operandIndex] = operandIndex; 586 } 587 } else { 588 ++numPhysicalOperands; 589 operandMapping[operandIndex] = operandIndex; 590 } 591 592 const std::string &recName = OperandList[operandIndex].Rec->getName(); 593 594 if (recName.find("FR") != recName.npos) 595 hasFROperands = true; 596 } 597 598 if (hasFROperands && Name.find("MOV") != Name.npos && 599 ((Name.find("2") != Name.npos && Name.find("32") == Name.npos) || 600 (Name.find("to") != Name.npos))) 601 ShouldBeEmitted = false; 602 603 if (!ShouldBeEmitted) 604 return; 605 606#define HANDLE_OPERAND(class) \ 607 handleOperand(false, \ 608 operandIndex, \ 609 physicalOperandIndex, \ 610 numPhysicalOperands, \ 611 operandMapping, \ 612 class##EncodingFromString); 613 614#define HANDLE_OPTIONAL(class) \ 615 handleOperand(true, \ 616 operandIndex, \ 617 physicalOperandIndex, \ 618 numPhysicalOperands, \ 619 operandMapping, \ 620 class##EncodingFromString); 621 622 // operandIndex should always be < numOperands 623 unsigned operandIndex = 0; 624 // physicalOperandIndex should always be < numPhysicalOperands 625 unsigned physicalOperandIndex = 0; 626 627 switch (Form) { 628 case X86Local::RawFrm: 629 // Operand 1 (optional) is an address or immediate. 630 // Operand 2 (optional) is an immediate. 631 assert(numPhysicalOperands <= 2 && 632 "Unexpected number of operands for RawFrm"); 633 HANDLE_OPTIONAL(relocation) 634 HANDLE_OPTIONAL(immediate) 635 break; 636 case X86Local::AddRegFrm: 637 // Operand 1 is added to the opcode. 638 // Operand 2 (optional) is an address. 639 assert(numPhysicalOperands >= 1 && numPhysicalOperands <= 2 && 640 "Unexpected number of operands for AddRegFrm"); 641 HANDLE_OPERAND(opcodeModifier) 642 HANDLE_OPTIONAL(relocation) 643 break; 644 case X86Local::MRMDestReg: 645 // Operand 1 is a register operand in the R/M field. 646 // Operand 2 is a register operand in the Reg/Opcode field. 647 // - In AVX, there is a register operand in the VEX.vvvv field here - 648 // Operand 3 (optional) is an immediate. 649 if (HasVEX_4VPrefix) 650 assert(numPhysicalOperands >= 3 && numPhysicalOperands <= 4 && 651 "Unexpected number of operands for MRMDestRegFrm with VEX_4V"); 652 else 653 assert(numPhysicalOperands >= 2 && numPhysicalOperands <= 3 && 654 "Unexpected number of operands for MRMDestRegFrm"); 655 656 HANDLE_OPERAND(rmRegister) 657 658 if (HasVEX_4VPrefix) 659 // FIXME: In AVX, the register below becomes the one encoded 660 // in ModRMVEX and the one above the one in the VEX.VVVV field 661 HANDLE_OPERAND(vvvvRegister) 662 663 HANDLE_OPERAND(roRegister) 664 HANDLE_OPTIONAL(immediate) 665 break; 666 case X86Local::MRMDestMem: 667 // Operand 1 is a memory operand (possibly SIB-extended) 668 // Operand 2 is a register operand in the Reg/Opcode field. 669 // - In AVX, there is a register operand in the VEX.vvvv field here - 670 // Operand 3 (optional) is an immediate. 671 if (HasVEX_4VPrefix) 672 assert(numPhysicalOperands >= 3 && numPhysicalOperands <= 4 && 673 "Unexpected number of operands for MRMDestMemFrm with VEX_4V"); 674 else 675 assert(numPhysicalOperands >= 2 && numPhysicalOperands <= 3 && 676 "Unexpected number of operands for MRMDestMemFrm"); 677 HANDLE_OPERAND(memory) 678 679 if (HasVEX_4VPrefix) 680 // FIXME: In AVX, the register below becomes the one encoded 681 // in ModRMVEX and the one above the one in the VEX.VVVV field 682 HANDLE_OPERAND(vvvvRegister) 683 684 HANDLE_OPERAND(roRegister) 685 HANDLE_OPTIONAL(immediate) 686 break; 687 case X86Local::MRMSrcReg: 688 // Operand 1 is a register operand in the Reg/Opcode field. 689 // Operand 2 is a register operand in the R/M field. 690 // - In AVX, there is a register operand in the VEX.vvvv field here - 691 // Operand 3 (optional) is an immediate. 692 // Operand 4 (optional) is an immediate. 693 694 if (HasVEX_4VPrefix || HasVEX_4VOp3Prefix) 695 assert(numPhysicalOperands >= 3 && numPhysicalOperands <= 5 && 696 "Unexpected number of operands for MRMSrcRegFrm with VEX_4V"); 697 else 698 assert(numPhysicalOperands >= 2 && numPhysicalOperands <= 4 && 699 "Unexpected number of operands for MRMSrcRegFrm"); 700 701 HANDLE_OPERAND(roRegister) 702 703 if (HasVEX_4VPrefix) 704 // FIXME: In AVX, the register below becomes the one encoded 705 // in ModRMVEX and the one above the one in the VEX.VVVV field 706 HANDLE_OPERAND(vvvvRegister) 707 708 if (HasMemOp4Prefix) 709 HANDLE_OPERAND(immediate) 710 711 HANDLE_OPERAND(rmRegister) 712 713 if (HasVEX_4VOp3Prefix) 714 HANDLE_OPERAND(vvvvRegister) 715 716 if (!HasMemOp4Prefix) 717 HANDLE_OPTIONAL(immediate) 718 HANDLE_OPTIONAL(immediate) // above might be a register in 7:4 719 HANDLE_OPTIONAL(immediate) 720 break; 721 case X86Local::MRMSrcMem: 722 // Operand 1 is a register operand in the Reg/Opcode field. 723 // Operand 2 is a memory operand (possibly SIB-extended) 724 // - In AVX, there is a register operand in the VEX.vvvv field here - 725 // Operand 3 (optional) is an immediate. 726 727 if (HasVEX_4VPrefix || HasVEX_4VOp3Prefix) 728 assert(numPhysicalOperands >= 3 && numPhysicalOperands <= 5 && 729 "Unexpected number of operands for MRMSrcMemFrm with VEX_4V"); 730 else 731 assert(numPhysicalOperands >= 2 && numPhysicalOperands <= 3 && 732 "Unexpected number of operands for MRMSrcMemFrm"); 733 734 HANDLE_OPERAND(roRegister) 735 736 if (HasVEX_4VPrefix) 737 // FIXME: In AVX, the register below becomes the one encoded 738 // in ModRMVEX and the one above the one in the VEX.VVVV field 739 HANDLE_OPERAND(vvvvRegister) 740 741 if (HasMemOp4Prefix) 742 HANDLE_OPERAND(immediate) 743 744 HANDLE_OPERAND(memory) 745 746 if (HasVEX_4VOp3Prefix) 747 HANDLE_OPERAND(vvvvRegister) 748 749 if (!HasMemOp4Prefix) 750 HANDLE_OPTIONAL(immediate) 751 HANDLE_OPTIONAL(immediate) // above might be a register in 7:4 752 break; 753 case X86Local::MRM0r: 754 case X86Local::MRM1r: 755 case X86Local::MRM2r: 756 case X86Local::MRM3r: 757 case X86Local::MRM4r: 758 case X86Local::MRM5r: 759 case X86Local::MRM6r: 760 case X86Local::MRM7r: 761 // Operand 1 is a register operand in the R/M field. 762 // Operand 2 (optional) is an immediate or relocation. 763 // Operand 3 (optional) is an immediate. 764 if (HasVEX_4VPrefix) 765 assert(numPhysicalOperands <= 3 && 766 "Unexpected number of operands for MRMnRFrm with VEX_4V"); 767 else 768 assert(numPhysicalOperands <= 3 && 769 "Unexpected number of operands for MRMnRFrm"); 770 if (HasVEX_4VPrefix) 771 HANDLE_OPERAND(vvvvRegister) 772 HANDLE_OPTIONAL(rmRegister) 773 HANDLE_OPTIONAL(relocation) 774 HANDLE_OPTIONAL(immediate) 775 break; 776 case X86Local::MRM0m: 777 case X86Local::MRM1m: 778 case X86Local::MRM2m: 779 case X86Local::MRM3m: 780 case X86Local::MRM4m: 781 case X86Local::MRM5m: 782 case X86Local::MRM6m: 783 case X86Local::MRM7m: 784 // Operand 1 is a memory operand (possibly SIB-extended) 785 // Operand 2 (optional) is an immediate or relocation. 786 if (HasVEX_4VPrefix) 787 assert(numPhysicalOperands >= 2 && numPhysicalOperands <= 3 && 788 "Unexpected number of operands for MRMnMFrm"); 789 else 790 assert(numPhysicalOperands >= 1 && numPhysicalOperands <= 2 && 791 "Unexpected number of operands for MRMnMFrm"); 792 if (HasVEX_4VPrefix) 793 HANDLE_OPERAND(vvvvRegister) 794 HANDLE_OPERAND(memory) 795 HANDLE_OPTIONAL(relocation) 796 break; 797 case X86Local::RawFrmImm8: 798 // operand 1 is a 16-bit immediate 799 // operand 2 is an 8-bit immediate 800 assert(numPhysicalOperands == 2 && 801 "Unexpected number of operands for X86Local::RawFrmImm8"); 802 HANDLE_OPERAND(immediate) 803 HANDLE_OPERAND(immediate) 804 break; 805 case X86Local::RawFrmImm16: 806 // operand 1 is a 16-bit immediate 807 // operand 2 is a 16-bit immediate 808 HANDLE_OPERAND(immediate) 809 HANDLE_OPERAND(immediate) 810 break; 811 case X86Local::MRMInitReg: 812 // Ignored. 813 break; 814 } 815 816 #undef HANDLE_OPERAND 817 #undef HANDLE_OPTIONAL 818} 819 820void RecognizableInstr::emitDecodePath(DisassemblerTables &tables) const { 821 // Special cases where the LLVM tables are not complete 822 823#define MAP(from, to) \ 824 case X86Local::MRM_##from: \ 825 filter = new ExactFilter(0x##from); \ 826 break; 827 828 OpcodeType opcodeType = (OpcodeType)-1; 829 830 ModRMFilter* filter = NULL; 831 uint8_t opcodeToSet = 0; 832 833 switch (Prefix) { 834 // Extended two-byte opcodes can start with f2 0f, f3 0f, or 0f 835 case X86Local::XD: 836 case X86Local::XS: 837 case X86Local::TB: 838 opcodeType = TWOBYTE; 839 840 switch (Opcode) { 841 default: 842 if (needsModRMForDecode(Form)) 843 filter = new ModFilter(isRegFormat(Form)); 844 else 845 filter = new DumbFilter(); 846 break; 847#define EXTENSION_TABLE(n) case 0x##n: 848 TWO_BYTE_EXTENSION_TABLES 849#undef EXTENSION_TABLE 850 switch (Form) { 851 default: 852 llvm_unreachable("Unhandled two-byte extended opcode"); 853 case X86Local::MRM0r: 854 case X86Local::MRM1r: 855 case X86Local::MRM2r: 856 case X86Local::MRM3r: 857 case X86Local::MRM4r: 858 case X86Local::MRM5r: 859 case X86Local::MRM6r: 860 case X86Local::MRM7r: 861 filter = new ExtendedFilter(true, Form - X86Local::MRM0r); 862 break; 863 case X86Local::MRM0m: 864 case X86Local::MRM1m: 865 case X86Local::MRM2m: 866 case X86Local::MRM3m: 867 case X86Local::MRM4m: 868 case X86Local::MRM5m: 869 case X86Local::MRM6m: 870 case X86Local::MRM7m: 871 filter = new ExtendedFilter(false, Form - X86Local::MRM0m); 872 break; 873 MRM_MAPPING 874 } // switch (Form) 875 break; 876 } // switch (Opcode) 877 opcodeToSet = Opcode; 878 break; 879 case X86Local::T8: 880 case X86Local::T8XD: 881 case X86Local::T8XS: 882 opcodeType = THREEBYTE_38; 883 switch (Opcode) { 884 default: 885 if (needsModRMForDecode(Form)) 886 filter = new ModFilter(isRegFormat(Form)); 887 else 888 filter = new DumbFilter(); 889 break; 890#define EXTENSION_TABLE(n) case 0x##n: 891 THREE_BYTE_38_EXTENSION_TABLES 892#undef EXTENSION_TABLE 893 switch (Form) { 894 default: 895 llvm_unreachable("Unhandled two-byte extended opcode"); 896 case X86Local::MRM0r: 897 case X86Local::MRM1r: 898 case X86Local::MRM2r: 899 case X86Local::MRM3r: 900 case X86Local::MRM4r: 901 case X86Local::MRM5r: 902 case X86Local::MRM6r: 903 case X86Local::MRM7r: 904 filter = new ExtendedFilter(true, Form - X86Local::MRM0r); 905 break; 906 case X86Local::MRM0m: 907 case X86Local::MRM1m: 908 case X86Local::MRM2m: 909 case X86Local::MRM3m: 910 case X86Local::MRM4m: 911 case X86Local::MRM5m: 912 case X86Local::MRM6m: 913 case X86Local::MRM7m: 914 filter = new ExtendedFilter(false, Form - X86Local::MRM0m); 915 break; 916 MRM_MAPPING 917 } // switch (Form) 918 break; 919 } // switch (Opcode) 920 opcodeToSet = Opcode; 921 break; 922 case X86Local::P_TA: 923 case X86Local::TAXD: 924 opcodeType = THREEBYTE_3A; 925 if (needsModRMForDecode(Form)) 926 filter = new ModFilter(isRegFormat(Form)); 927 else 928 filter = new DumbFilter(); 929 opcodeToSet = Opcode; 930 break; 931 case X86Local::A6: 932 opcodeType = THREEBYTE_A6; 933 if (needsModRMForDecode(Form)) 934 filter = new ModFilter(isRegFormat(Form)); 935 else 936 filter = new DumbFilter(); 937 opcodeToSet = Opcode; 938 break; 939 case X86Local::A7: 940 opcodeType = THREEBYTE_A7; 941 if (needsModRMForDecode(Form)) 942 filter = new ModFilter(isRegFormat(Form)); 943 else 944 filter = new DumbFilter(); 945 opcodeToSet = Opcode; 946 break; 947 case X86Local::D8: 948 case X86Local::D9: 949 case X86Local::DA: 950 case X86Local::DB: 951 case X86Local::DC: 952 case X86Local::DD: 953 case X86Local::DE: 954 case X86Local::DF: 955 assert(Opcode >= 0xc0 && "Unexpected opcode for an escape opcode"); 956 opcodeType = ONEBYTE; 957 if (Form == X86Local::AddRegFrm) { 958 Spec->modifierType = MODIFIER_MODRM; 959 Spec->modifierBase = Opcode; 960 filter = new AddRegEscapeFilter(Opcode); 961 } else { 962 filter = new EscapeFilter(true, Opcode); 963 } 964 opcodeToSet = 0xd8 + (Prefix - X86Local::D8); 965 break; 966 case X86Local::REP: 967 default: 968 opcodeType = ONEBYTE; 969 switch (Opcode) { 970#define EXTENSION_TABLE(n) case 0x##n: 971 ONE_BYTE_EXTENSION_TABLES 972#undef EXTENSION_TABLE 973 switch (Form) { 974 default: 975 llvm_unreachable("Fell through the cracks of a single-byte " 976 "extended opcode"); 977 case X86Local::MRM0r: 978 case X86Local::MRM1r: 979 case X86Local::MRM2r: 980 case X86Local::MRM3r: 981 case X86Local::MRM4r: 982 case X86Local::MRM5r: 983 case X86Local::MRM6r: 984 case X86Local::MRM7r: 985 filter = new ExtendedFilter(true, Form - X86Local::MRM0r); 986 break; 987 case X86Local::MRM0m: 988 case X86Local::MRM1m: 989 case X86Local::MRM2m: 990 case X86Local::MRM3m: 991 case X86Local::MRM4m: 992 case X86Local::MRM5m: 993 case X86Local::MRM6m: 994 case X86Local::MRM7m: 995 filter = new ExtendedFilter(false, Form - X86Local::MRM0m); 996 break; 997 MRM_MAPPING 998 } // switch (Form) 999 break; 1000 case 0xd8: 1001 case 0xd9: 1002 case 0xda: 1003 case 0xdb: 1004 case 0xdc: 1005 case 0xdd: 1006 case 0xde: 1007 case 0xdf: 1008 filter = new EscapeFilter(false, Form - X86Local::MRM0m); 1009 break; 1010 default: 1011 if (needsModRMForDecode(Form)) 1012 filter = new ModFilter(isRegFormat(Form)); 1013 else 1014 filter = new DumbFilter(); 1015 break; 1016 } // switch (Opcode) 1017 opcodeToSet = Opcode; 1018 } // switch (Prefix) 1019 1020 assert(opcodeType != (OpcodeType)-1 && 1021 "Opcode type not set"); 1022 assert(filter && "Filter not set"); 1023 1024 if (Form == X86Local::AddRegFrm) { 1025 if(Spec->modifierType != MODIFIER_MODRM) { 1026 assert(opcodeToSet < 0xf9 && 1027 "Not enough room for all ADDREG_FRM operands"); 1028 1029 uint8_t currentOpcode; 1030 1031 for (currentOpcode = opcodeToSet; 1032 currentOpcode < opcodeToSet + 8; 1033 ++currentOpcode) 1034 tables.setTableFields(opcodeType, 1035 insnContext(), 1036 currentOpcode, 1037 *filter, 1038 UID, Is32Bit, IgnoresVEX_L); 1039 1040 Spec->modifierType = MODIFIER_OPCODE; 1041 Spec->modifierBase = opcodeToSet; 1042 } else { 1043 // modifierBase was set where MODIFIER_MODRM was set 1044 tables.setTableFields(opcodeType, 1045 insnContext(), 1046 opcodeToSet, 1047 *filter, 1048 UID, Is32Bit, IgnoresVEX_L); 1049 } 1050 } else { 1051 tables.setTableFields(opcodeType, 1052 insnContext(), 1053 opcodeToSet, 1054 *filter, 1055 UID, Is32Bit, IgnoresVEX_L); 1056 1057 Spec->modifierType = MODIFIER_NONE; 1058 Spec->modifierBase = opcodeToSet; 1059 } 1060 1061 delete filter; 1062 1063#undef MAP 1064} 1065 1066#define TYPE(str, type) if (s == str) return type; 1067OperandType RecognizableInstr::typeFromString(const std::string &s, 1068 bool isSSE, 1069 bool hasREX_WPrefix, 1070 bool hasOpSizePrefix) { 1071 if (isSSE) { 1072 // For SSE instructions, we ignore the OpSize prefix and force operand 1073 // sizes. 1074 TYPE("GR16", TYPE_R16) 1075 TYPE("GR32", TYPE_R32) 1076 TYPE("GR64", TYPE_R64) 1077 } 1078 if(hasREX_WPrefix) { 1079 // For instructions with a REX_W prefix, a declared 32-bit register encoding 1080 // is special. 1081 TYPE("GR32", TYPE_R32) 1082 } 1083 if(!hasOpSizePrefix) { 1084 // For instructions without an OpSize prefix, a declared 16-bit register or 1085 // immediate encoding is special. 1086 TYPE("GR16", TYPE_R16) 1087 TYPE("i16imm", TYPE_IMM16) 1088 } 1089 TYPE("i16mem", TYPE_Mv) 1090 TYPE("i16imm", TYPE_IMMv) 1091 TYPE("i16i8imm", TYPE_IMMv) 1092 TYPE("GR16", TYPE_Rv) 1093 TYPE("i32mem", TYPE_Mv) 1094 TYPE("i32imm", TYPE_IMMv) 1095 TYPE("i32i8imm", TYPE_IMM32) 1096 TYPE("u32u8imm", TYPE_IMM32) 1097 TYPE("GR32", TYPE_Rv) 1098 TYPE("i64mem", TYPE_Mv) 1099 TYPE("i64i32imm", TYPE_IMM64) 1100 TYPE("i64i8imm", TYPE_IMM64) 1101 TYPE("GR64", TYPE_R64) 1102 TYPE("i8mem", TYPE_M8) 1103 TYPE("i8imm", TYPE_IMM8) 1104 TYPE("GR8", TYPE_R8) 1105 TYPE("VR128", TYPE_XMM128) 1106 TYPE("f128mem", TYPE_M128) 1107 TYPE("f256mem", TYPE_M256) 1108 TYPE("FR64", TYPE_XMM64) 1109 TYPE("f64mem", TYPE_M64FP) 1110 TYPE("sdmem", TYPE_M64FP) 1111 TYPE("FR32", TYPE_XMM32) 1112 TYPE("f32mem", TYPE_M32FP) 1113 TYPE("ssmem", TYPE_M32FP) 1114 TYPE("RST", TYPE_ST) 1115 TYPE("i128mem", TYPE_M128) 1116 TYPE("i256mem", TYPE_M256) 1117 TYPE("i64i32imm_pcrel", TYPE_REL64) 1118 TYPE("i16imm_pcrel", TYPE_REL16) 1119 TYPE("i32imm_pcrel", TYPE_REL32) 1120 TYPE("SSECC", TYPE_IMM3) 1121 TYPE("AVXCC", TYPE_IMM5) 1122 TYPE("brtarget", TYPE_RELv) 1123 TYPE("uncondbrtarget", TYPE_RELv) 1124 TYPE("brtarget8", TYPE_REL8) 1125 TYPE("f80mem", TYPE_M80FP) 1126 TYPE("lea32mem", TYPE_LEA) 1127 TYPE("lea64_32mem", TYPE_LEA) 1128 TYPE("lea64mem", TYPE_LEA) 1129 TYPE("VR64", TYPE_MM64) 1130 TYPE("i64imm", TYPE_IMMv) 1131 TYPE("opaque32mem", TYPE_M1616) 1132 TYPE("opaque48mem", TYPE_M1632) 1133 TYPE("opaque80mem", TYPE_M1664) 1134 TYPE("opaque512mem", TYPE_M512) 1135 TYPE("SEGMENT_REG", TYPE_SEGMENTREG) 1136 TYPE("DEBUG_REG", TYPE_DEBUGREG) 1137 TYPE("CONTROL_REG", TYPE_CONTROLREG) 1138 TYPE("offset8", TYPE_MOFFS8) 1139 TYPE("offset16", TYPE_MOFFS16) 1140 TYPE("offset32", TYPE_MOFFS32) 1141 TYPE("offset64", TYPE_MOFFS64) 1142 TYPE("VR256", TYPE_XMM256) 1143 TYPE("GR16_NOAX", TYPE_Rv) 1144 TYPE("GR32_NOAX", TYPE_Rv) 1145 TYPE("GR64_NOAX", TYPE_R64) 1146 TYPE("vx32mem", TYPE_M32) 1147 TYPE("vy32mem", TYPE_M32) 1148 TYPE("vx64mem", TYPE_M64) 1149 TYPE("vy64mem", TYPE_M64) 1150 errs() << "Unhandled type string " << s << "\n"; 1151 llvm_unreachable("Unhandled type string"); 1152} 1153#undef TYPE 1154 1155#define ENCODING(str, encoding) if (s == str) return encoding; 1156OperandEncoding RecognizableInstr::immediateEncodingFromString 1157 (const std::string &s, 1158 bool hasOpSizePrefix) { 1159 if(!hasOpSizePrefix) { 1160 // For instructions without an OpSize prefix, a declared 16-bit register or 1161 // immediate encoding is special. 1162 ENCODING("i16imm", ENCODING_IW) 1163 } 1164 ENCODING("i32i8imm", ENCODING_IB) 1165 ENCODING("u32u8imm", ENCODING_IB) 1166 ENCODING("SSECC", ENCODING_IB) 1167 ENCODING("AVXCC", ENCODING_IB) 1168 ENCODING("i16imm", ENCODING_Iv) 1169 ENCODING("i16i8imm", ENCODING_IB) 1170 ENCODING("i32imm", ENCODING_Iv) 1171 ENCODING("i64i32imm", ENCODING_ID) 1172 ENCODING("i64i8imm", ENCODING_IB) 1173 ENCODING("i8imm", ENCODING_IB) 1174 // This is not a typo. Instructions like BLENDVPD put 1175 // register IDs in 8-bit immediates nowadays. 1176 ENCODING("VR256", ENCODING_IB) 1177 ENCODING("VR128", ENCODING_IB) 1178 errs() << "Unhandled immediate encoding " << s << "\n"; 1179 llvm_unreachable("Unhandled immediate encoding"); 1180} 1181 1182OperandEncoding RecognizableInstr::rmRegisterEncodingFromString 1183 (const std::string &s, 1184 bool hasOpSizePrefix) { 1185 ENCODING("GR16", ENCODING_RM) 1186 ENCODING("GR32", ENCODING_RM) 1187 ENCODING("GR64", ENCODING_RM) 1188 ENCODING("GR8", ENCODING_RM) 1189 ENCODING("VR128", ENCODING_RM) 1190 ENCODING("FR64", ENCODING_RM) 1191 ENCODING("FR32", ENCODING_RM) 1192 ENCODING("VR64", ENCODING_RM) 1193 ENCODING("VR256", ENCODING_RM) 1194 errs() << "Unhandled R/M register encoding " << s << "\n"; 1195 llvm_unreachable("Unhandled R/M register encoding"); 1196} 1197 1198OperandEncoding RecognizableInstr::roRegisterEncodingFromString 1199 (const std::string &s, 1200 bool hasOpSizePrefix) { 1201 ENCODING("GR16", ENCODING_REG) 1202 ENCODING("GR32", ENCODING_REG) 1203 ENCODING("GR64", ENCODING_REG) 1204 ENCODING("GR8", ENCODING_REG) 1205 ENCODING("VR128", ENCODING_REG) 1206 ENCODING("FR64", ENCODING_REG) 1207 ENCODING("FR32", ENCODING_REG) 1208 ENCODING("VR64", ENCODING_REG) 1209 ENCODING("SEGMENT_REG", ENCODING_REG) 1210 ENCODING("DEBUG_REG", ENCODING_REG) 1211 ENCODING("CONTROL_REG", ENCODING_REG) 1212 ENCODING("VR256", ENCODING_REG) 1213 errs() << "Unhandled reg/opcode register encoding " << s << "\n"; 1214 llvm_unreachable("Unhandled reg/opcode register encoding"); 1215} 1216 1217OperandEncoding RecognizableInstr::vvvvRegisterEncodingFromString 1218 (const std::string &s, 1219 bool hasOpSizePrefix) { 1220 ENCODING("GR32", ENCODING_VVVV) 1221 ENCODING("GR64", ENCODING_VVVV) 1222 ENCODING("FR32", ENCODING_VVVV) 1223 ENCODING("FR64", ENCODING_VVVV) 1224 ENCODING("VR128", ENCODING_VVVV) 1225 ENCODING("VR256", ENCODING_VVVV) 1226 errs() << "Unhandled VEX.vvvv register encoding " << s << "\n"; 1227 llvm_unreachable("Unhandled VEX.vvvv register encoding"); 1228} 1229 1230OperandEncoding RecognizableInstr::memoryEncodingFromString 1231 (const std::string &s, 1232 bool hasOpSizePrefix) { 1233 ENCODING("i16mem", ENCODING_RM) 1234 ENCODING("i32mem", ENCODING_RM) 1235 ENCODING("i64mem", ENCODING_RM) 1236 ENCODING("i8mem", ENCODING_RM) 1237 ENCODING("ssmem", ENCODING_RM) 1238 ENCODING("sdmem", ENCODING_RM) 1239 ENCODING("f128mem", ENCODING_RM) 1240 ENCODING("f256mem", ENCODING_RM) 1241 ENCODING("f64mem", ENCODING_RM) 1242 ENCODING("f32mem", ENCODING_RM) 1243 ENCODING("i128mem", ENCODING_RM) 1244 ENCODING("i256mem", ENCODING_RM) 1245 ENCODING("f80mem", ENCODING_RM) 1246 ENCODING("lea32mem", ENCODING_RM) 1247 ENCODING("lea64_32mem", ENCODING_RM) 1248 ENCODING("lea64mem", ENCODING_RM) 1249 ENCODING("opaque32mem", ENCODING_RM) 1250 ENCODING("opaque48mem", ENCODING_RM) 1251 ENCODING("opaque80mem", ENCODING_RM) 1252 ENCODING("opaque512mem", ENCODING_RM) 1253 ENCODING("vx32mem", ENCODING_RM) 1254 ENCODING("vy32mem", ENCODING_RM) 1255 ENCODING("vx64mem", ENCODING_RM) 1256 ENCODING("vy64mem", ENCODING_RM) 1257 errs() << "Unhandled memory encoding " << s << "\n"; 1258 llvm_unreachable("Unhandled memory encoding"); 1259} 1260 1261OperandEncoding RecognizableInstr::relocationEncodingFromString 1262 (const std::string &s, 1263 bool hasOpSizePrefix) { 1264 if(!hasOpSizePrefix) { 1265 // For instructions without an OpSize prefix, a declared 16-bit register or 1266 // immediate encoding is special. 1267 ENCODING("i16imm", ENCODING_IW) 1268 } 1269 ENCODING("i16imm", ENCODING_Iv) 1270 ENCODING("i16i8imm", ENCODING_IB) 1271 ENCODING("i32imm", ENCODING_Iv) 1272 ENCODING("i32i8imm", ENCODING_IB) 1273 ENCODING("i64i32imm", ENCODING_ID) 1274 ENCODING("i64i8imm", ENCODING_IB) 1275 ENCODING("i8imm", ENCODING_IB) 1276 ENCODING("i64i32imm_pcrel", ENCODING_ID) 1277 ENCODING("i16imm_pcrel", ENCODING_IW) 1278 ENCODING("i32imm_pcrel", ENCODING_ID) 1279 ENCODING("brtarget", ENCODING_Iv) 1280 ENCODING("brtarget8", ENCODING_IB) 1281 ENCODING("i64imm", ENCODING_IO) 1282 ENCODING("offset8", ENCODING_Ia) 1283 ENCODING("offset16", ENCODING_Ia) 1284 ENCODING("offset32", ENCODING_Ia) 1285 ENCODING("offset64", ENCODING_Ia) 1286 errs() << "Unhandled relocation encoding " << s << "\n"; 1287 llvm_unreachable("Unhandled relocation encoding"); 1288} 1289 1290OperandEncoding RecognizableInstr::opcodeModifierEncodingFromString 1291 (const std::string &s, 1292 bool hasOpSizePrefix) { 1293 ENCODING("RST", ENCODING_I) 1294 ENCODING("GR32", ENCODING_Rv) 1295 ENCODING("GR64", ENCODING_RO) 1296 ENCODING("GR16", ENCODING_Rv) 1297 ENCODING("GR8", ENCODING_RB) 1298 ENCODING("GR16_NOAX", ENCODING_Rv) 1299 ENCODING("GR32_NOAX", ENCODING_Rv) 1300 ENCODING("GR64_NOAX", ENCODING_RO) 1301 errs() << "Unhandled opcode modifier encoding " << s << "\n"; 1302 llvm_unreachable("Unhandled opcode modifier encoding"); 1303} 1304#undef ENCODING 1305