1 //===-- llvm-mc.cpp - Machine Code Hacking Driver ---------------*- 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 utility is a simple driver that allows command line hacking on machine 10 // code. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "Disassembler.h" 15 #include "llvm/MC/MCAsmBackend.h" 16 #include "llvm/MC/MCAsmInfo.h" 17 #include "llvm/MC/MCCodeEmitter.h" 18 #include "llvm/MC/MCContext.h" 19 #include "llvm/MC/MCInstPrinter.h" 20 #include "llvm/MC/MCInstrInfo.h" 21 #include "llvm/MC/MCObjectFileInfo.h" 22 #include "llvm/MC/MCObjectWriter.h" 23 #include "llvm/MC/MCParser/AsmLexer.h" 24 #include "llvm/MC/MCParser/MCTargetAsmParser.h" 25 #include "llvm/MC/MCRegisterInfo.h" 26 #include "llvm/MC/MCStreamer.h" 27 #include "llvm/MC/MCSubtargetInfo.h" 28 #include "llvm/MC/MCTargetOptionsCommandFlags.h" 29 #include "llvm/MC/TargetRegistry.h" 30 #include "llvm/Support/CommandLine.h" 31 #include "llvm/Support/Compression.h" 32 #include "llvm/Support/FileUtilities.h" 33 #include "llvm/Support/FormattedStream.h" 34 #include "llvm/Support/InitLLVM.h" 35 #include "llvm/Support/MemoryBuffer.h" 36 #include "llvm/Support/SourceMgr.h" 37 #include "llvm/Support/TargetSelect.h" 38 #include "llvm/Support/ToolOutputFile.h" 39 #include "llvm/Support/WithColor.h" 40 #include "llvm/TargetParser/Host.h" 41 42 using namespace llvm; 43 44 static mc::RegisterMCTargetOptionsFlags MOF; 45 46 static cl::OptionCategory MCCategory("MC Options"); 47 48 static cl::opt<std::string> InputFilename(cl::Positional, 49 cl::desc("<input file>"), 50 cl::init("-"), cl::cat(MCCategory)); 51 52 static cl::list<std::string> 53 DisassemblerOptions("M", cl::desc("Disassembler options"), 54 cl::cat(MCCategory)); 55 56 static cl::opt<std::string> OutputFilename("o", cl::desc("Output filename"), 57 cl::value_desc("filename"), 58 cl::init("-"), cl::cat(MCCategory)); 59 60 static cl::opt<std::string> SplitDwarfFile("split-dwarf-file", 61 cl::desc("DWO output filename"), 62 cl::value_desc("filename"), 63 cl::cat(MCCategory)); 64 65 static cl::opt<bool> ShowEncoding("show-encoding", 66 cl::desc("Show instruction encodings"), 67 cl::cat(MCCategory)); 68 69 static cl::opt<bool> RelaxELFRel( 70 "relax-relocations", cl::init(true), 71 cl::desc("Emit R_X86_64_GOTPCRELX instead of R_X86_64_GOTPCREL"), 72 cl::cat(MCCategory)); 73 74 static cl::opt<DebugCompressionType> CompressDebugSections( 75 "compress-debug-sections", cl::ValueOptional, 76 cl::init(DebugCompressionType::None), 77 cl::desc("Choose DWARF debug sections compression:"), 78 cl::values(clEnumValN(DebugCompressionType::None, "none", "No compression"), 79 clEnumValN(DebugCompressionType::Zlib, "zlib", "Use zlib"), 80 clEnumValN(DebugCompressionType::Zstd, "zstd", "Use zstd")), 81 cl::cat(MCCategory)); 82 83 static cl::opt<bool> 84 ShowInst("show-inst", cl::desc("Show internal instruction representation"), 85 cl::cat(MCCategory)); 86 87 static cl::opt<bool> 88 ShowInstOperands("show-inst-operands", 89 cl::desc("Show instructions operands as parsed"), 90 cl::cat(MCCategory)); 91 92 static cl::opt<unsigned> 93 OutputAsmVariant("output-asm-variant", 94 cl::desc("Syntax variant to use for output printing"), 95 cl::cat(MCCategory)); 96 97 static cl::opt<bool> 98 PrintImmHex("print-imm-hex", cl::init(false), 99 cl::desc("Prefer hex format for immediate values"), 100 cl::cat(MCCategory)); 101 102 static cl::list<std::string> 103 DefineSymbol("defsym", 104 cl::desc("Defines a symbol to be an integer constant"), 105 cl::cat(MCCategory)); 106 107 static cl::opt<bool> 108 PreserveComments("preserve-comments", 109 cl::desc("Preserve Comments in outputted assembly"), 110 cl::cat(MCCategory)); 111 112 enum OutputFileType { 113 OFT_Null, 114 OFT_AssemblyFile, 115 OFT_ObjectFile 116 }; 117 static cl::opt<OutputFileType> 118 FileType("filetype", cl::init(OFT_AssemblyFile), 119 cl::desc("Choose an output file type:"), 120 cl::values(clEnumValN(OFT_AssemblyFile, "asm", 121 "Emit an assembly ('.s') file"), 122 clEnumValN(OFT_Null, "null", 123 "Don't emit anything (for timing purposes)"), 124 clEnumValN(OFT_ObjectFile, "obj", 125 "Emit a native object ('.o') file")), 126 cl::cat(MCCategory)); 127 128 static cl::list<std::string> IncludeDirs("I", 129 cl::desc("Directory of include files"), 130 cl::value_desc("directory"), 131 cl::Prefix, cl::cat(MCCategory)); 132 133 static cl::opt<std::string> 134 ArchName("arch", 135 cl::desc("Target arch to assemble for, " 136 "see -version for available targets"), 137 cl::cat(MCCategory)); 138 139 static cl::opt<std::string> 140 TripleName("triple", 141 cl::desc("Target triple to assemble for, " 142 "see -version for available targets"), 143 cl::cat(MCCategory)); 144 145 static cl::opt<std::string> 146 MCPU("mcpu", 147 cl::desc("Target a specific cpu type (-mcpu=help for details)"), 148 cl::value_desc("cpu-name"), cl::init(""), cl::cat(MCCategory)); 149 150 static cl::list<std::string> 151 MAttrs("mattr", cl::CommaSeparated, 152 cl::desc("Target specific attributes (-mattr=help for details)"), 153 cl::value_desc("a1,+a2,-a3,..."), cl::cat(MCCategory)); 154 155 static cl::opt<bool> PIC("position-independent", 156 cl::desc("Position independent"), cl::init(false), 157 cl::cat(MCCategory)); 158 159 static cl::opt<bool> 160 LargeCodeModel("large-code-model", 161 cl::desc("Create cfi directives that assume the code might " 162 "be more than 2gb away"), 163 cl::cat(MCCategory)); 164 165 static cl::opt<bool> 166 NoInitialTextSection("n", 167 cl::desc("Don't assume assembly file starts " 168 "in the text section"), 169 cl::cat(MCCategory)); 170 171 static cl::opt<bool> 172 GenDwarfForAssembly("g", 173 cl::desc("Generate dwarf debugging info for assembly " 174 "source files"), 175 cl::cat(MCCategory)); 176 177 static cl::opt<std::string> 178 DebugCompilationDir("fdebug-compilation-dir", 179 cl::desc("Specifies the debug info's compilation dir"), 180 cl::cat(MCCategory)); 181 182 static cl::list<std::string> DebugPrefixMap( 183 "fdebug-prefix-map", cl::desc("Map file source paths in debug info"), 184 cl::value_desc("= separated key-value pairs"), cl::cat(MCCategory)); 185 186 static cl::opt<std::string> MainFileName( 187 "main-file-name", 188 cl::desc("Specifies the name we should consider the input file"), 189 cl::cat(MCCategory)); 190 191 static cl::opt<bool> SaveTempLabels("save-temp-labels", 192 cl::desc("Don't discard temporary labels"), 193 cl::cat(MCCategory)); 194 195 static cl::opt<bool> LexMasmIntegers( 196 "masm-integers", 197 cl::desc("Enable binary and hex masm integers (0b110 and 0ABCh)"), 198 cl::cat(MCCategory)); 199 200 static cl::opt<bool> LexMasmHexFloats( 201 "masm-hexfloats", 202 cl::desc("Enable MASM-style hex float initializers (3F800000r)"), 203 cl::cat(MCCategory)); 204 205 static cl::opt<bool> LexMotorolaIntegers( 206 "motorola-integers", 207 cl::desc("Enable binary and hex Motorola integers (%110 and $ABC)"), 208 cl::cat(MCCategory)); 209 210 static cl::opt<bool> NoExecStack("no-exec-stack", 211 cl::desc("File doesn't need an exec stack"), 212 cl::cat(MCCategory)); 213 214 enum ActionType { 215 AC_AsLex, 216 AC_Assemble, 217 AC_Disassemble, 218 AC_MDisassemble, 219 AC_CDisassemble, 220 }; 221 222 static cl::opt<ActionType> Action( 223 cl::desc("Action to perform:"), cl::init(AC_Assemble), 224 cl::values(clEnumValN(AC_AsLex, "as-lex", "Lex tokens from a .s file"), 225 clEnumValN(AC_Assemble, "assemble", 226 "Assemble a .s file (default)"), 227 clEnumValN(AC_Disassemble, "disassemble", 228 "Disassemble strings of hex bytes"), 229 clEnumValN(AC_MDisassemble, "mdis", 230 "Marked up disassembly of strings of hex bytes"), 231 clEnumValN(AC_CDisassemble, "cdis", 232 "Colored disassembly of strings of hex bytes")), 233 cl::cat(MCCategory)); 234 235 static const Target *GetTarget(const char *ProgName) { 236 // Figure out the target triple. 237 if (TripleName.empty()) 238 TripleName = sys::getDefaultTargetTriple(); 239 Triple TheTriple(Triple::normalize(TripleName)); 240 241 // Get the target specific parser. 242 std::string Error; 243 const Target *TheTarget = TargetRegistry::lookupTarget(ArchName, TheTriple, 244 Error); 245 if (!TheTarget) { 246 WithColor::error(errs(), ProgName) << Error; 247 return nullptr; 248 } 249 250 // Update the triple name and return the found target. 251 TripleName = TheTriple.getTriple(); 252 return TheTarget; 253 } 254 255 static std::unique_ptr<ToolOutputFile> GetOutputStream(StringRef Path, 256 sys::fs::OpenFlags Flags) { 257 std::error_code EC; 258 auto Out = std::make_unique<ToolOutputFile>(Path, EC, Flags); 259 if (EC) { 260 WithColor::error() << EC.message() << '\n'; 261 return nullptr; 262 } 263 264 return Out; 265 } 266 267 static std::string DwarfDebugFlags; 268 static void setDwarfDebugFlags(int argc, char **argv) { 269 if (!getenv("RC_DEBUG_OPTIONS")) 270 return; 271 for (int i = 0; i < argc; i++) { 272 DwarfDebugFlags += argv[i]; 273 if (i + 1 < argc) 274 DwarfDebugFlags += " "; 275 } 276 } 277 278 static std::string DwarfDebugProducer; 279 static void setDwarfDebugProducer() { 280 if(!getenv("DEBUG_PRODUCER")) 281 return; 282 DwarfDebugProducer += getenv("DEBUG_PRODUCER"); 283 } 284 285 static int AsLexInput(SourceMgr &SrcMgr, MCAsmInfo &MAI, 286 raw_ostream &OS) { 287 288 AsmLexer Lexer(MAI); 289 Lexer.setBuffer(SrcMgr.getMemoryBuffer(SrcMgr.getMainFileID())->getBuffer()); 290 291 bool Error = false; 292 while (Lexer.Lex().isNot(AsmToken::Eof)) { 293 Lexer.getTok().dump(OS); 294 OS << "\n"; 295 if (Lexer.getTok().getKind() == AsmToken::Error) 296 Error = true; 297 } 298 299 return Error; 300 } 301 302 static int fillCommandLineSymbols(MCAsmParser &Parser) { 303 for (auto &I: DefineSymbol) { 304 auto Pair = StringRef(I).split('='); 305 auto Sym = Pair.first; 306 auto Val = Pair.second; 307 308 if (Sym.empty() || Val.empty()) { 309 WithColor::error() << "defsym must be of the form: sym=value: " << I 310 << "\n"; 311 return 1; 312 } 313 int64_t Value; 314 if (Val.getAsInteger(0, Value)) { 315 WithColor::error() << "value is not an integer: " << Val << "\n"; 316 return 1; 317 } 318 Parser.getContext().setSymbolValue(Parser.getStreamer(), Sym, Value); 319 } 320 return 0; 321 } 322 323 static int AssembleInput(const char *ProgName, const Target *TheTarget, 324 SourceMgr &SrcMgr, MCContext &Ctx, MCStreamer &Str, 325 MCAsmInfo &MAI, MCSubtargetInfo &STI, 326 MCInstrInfo &MCII, MCTargetOptions const &MCOptions) { 327 std::unique_ptr<MCAsmParser> Parser( 328 createMCAsmParser(SrcMgr, Ctx, Str, MAI)); 329 std::unique_ptr<MCTargetAsmParser> TAP( 330 TheTarget->createMCAsmParser(STI, *Parser, MCII, MCOptions)); 331 332 if (!TAP) { 333 WithColor::error(errs(), ProgName) 334 << "this target does not support assembly parsing.\n"; 335 return 1; 336 } 337 338 int SymbolResult = fillCommandLineSymbols(*Parser); 339 if(SymbolResult) 340 return SymbolResult; 341 Parser->setShowParsedOperands(ShowInstOperands); 342 Parser->setTargetParser(*TAP); 343 Parser->getLexer().setLexMasmIntegers(LexMasmIntegers); 344 Parser->getLexer().setLexMasmHexFloats(LexMasmHexFloats); 345 Parser->getLexer().setLexMotorolaIntegers(LexMotorolaIntegers); 346 347 int Res = Parser->Run(NoInitialTextSection); 348 349 return Res; 350 } 351 352 int main(int argc, char **argv) { 353 InitLLVM X(argc, argv); 354 355 // Initialize targets and assembly printers/parsers. 356 llvm::InitializeAllTargetInfos(); 357 llvm::InitializeAllTargetMCs(); 358 llvm::InitializeAllAsmParsers(); 359 llvm::InitializeAllDisassemblers(); 360 361 // Register the target printer for --version. 362 cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion); 363 364 cl::HideUnrelatedOptions({&MCCategory, &getColorCategory()}); 365 cl::ParseCommandLineOptions(argc, argv, "llvm machine code playground\n"); 366 const MCTargetOptions MCOptions = mc::InitMCTargetOptionsFromFlags(); 367 setDwarfDebugFlags(argc, argv); 368 369 setDwarfDebugProducer(); 370 371 const char *ProgName = argv[0]; 372 const Target *TheTarget = GetTarget(ProgName); 373 if (!TheTarget) 374 return 1; 375 // Now that GetTarget() has (potentially) replaced TripleName, it's safe to 376 // construct the Triple object. 377 Triple TheTriple(TripleName); 378 379 ErrorOr<std::unique_ptr<MemoryBuffer>> BufferPtr = 380 MemoryBuffer::getFileOrSTDIN(InputFilename, /*IsText=*/true); 381 if (std::error_code EC = BufferPtr.getError()) { 382 WithColor::error(errs(), ProgName) 383 << InputFilename << ": " << EC.message() << '\n'; 384 return 1; 385 } 386 MemoryBuffer *Buffer = BufferPtr->get(); 387 388 SourceMgr SrcMgr; 389 390 // Tell SrcMgr about this buffer, which is what the parser will pick up. 391 SrcMgr.AddNewSourceBuffer(std::move(*BufferPtr), SMLoc()); 392 393 // Record the location of the include directories so that the lexer can find 394 // it later. 395 SrcMgr.setIncludeDirs(IncludeDirs); 396 397 std::unique_ptr<MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TripleName)); 398 assert(MRI && "Unable to create target register info!"); 399 400 std::unique_ptr<MCAsmInfo> MAI( 401 TheTarget->createMCAsmInfo(*MRI, TripleName, MCOptions)); 402 assert(MAI && "Unable to create target asm info!"); 403 404 MAI->setRelaxELFRelocations(RelaxELFRel); 405 if (CompressDebugSections != DebugCompressionType::None) { 406 if (const char *Reason = compression::getReasonIfUnsupported( 407 compression::formatFor(CompressDebugSections))) { 408 WithColor::error(errs(), ProgName) 409 << "--compress-debug-sections: " << Reason; 410 return 1; 411 } 412 } 413 MAI->setCompressDebugSections(CompressDebugSections); 414 MAI->setPreserveAsmComments(PreserveComments); 415 416 // Package up features to be passed to target/subtarget 417 std::string FeaturesStr; 418 if (MAttrs.size()) { 419 SubtargetFeatures Features; 420 for (unsigned i = 0; i != MAttrs.size(); ++i) 421 Features.AddFeature(MAttrs[i]); 422 FeaturesStr = Features.getString(); 423 } 424 425 std::unique_ptr<MCSubtargetInfo> STI( 426 TheTarget->createMCSubtargetInfo(TripleName, MCPU, FeaturesStr)); 427 assert(STI && "Unable to create subtarget info!"); 428 429 // FIXME: This is not pretty. MCContext has a ptr to MCObjectFileInfo and 430 // MCObjectFileInfo needs a MCContext reference in order to initialize itself. 431 MCContext Ctx(TheTriple, MAI.get(), MRI.get(), STI.get(), &SrcMgr, 432 &MCOptions); 433 std::unique_ptr<MCObjectFileInfo> MOFI( 434 TheTarget->createMCObjectFileInfo(Ctx, PIC, LargeCodeModel)); 435 Ctx.setObjectFileInfo(MOFI.get()); 436 437 if (SaveTempLabels) 438 Ctx.setAllowTemporaryLabels(false); 439 440 Ctx.setGenDwarfForAssembly(GenDwarfForAssembly); 441 // Default to 4 for dwarf version. 442 unsigned DwarfVersion = MCOptions.DwarfVersion ? MCOptions.DwarfVersion : 4; 443 if (DwarfVersion < 2 || DwarfVersion > 5) { 444 errs() << ProgName << ": Dwarf version " << DwarfVersion 445 << " is not supported." << '\n'; 446 return 1; 447 } 448 Ctx.setDwarfVersion(DwarfVersion); 449 if (MCOptions.Dwarf64) { 450 // The 64-bit DWARF format was introduced in DWARFv3. 451 if (DwarfVersion < 3) { 452 errs() << ProgName 453 << ": the 64-bit DWARF format is not supported for DWARF versions " 454 "prior to 3\n"; 455 return 1; 456 } 457 // 32-bit targets don't support DWARF64, which requires 64-bit relocations. 458 if (MAI->getCodePointerSize() < 8) { 459 errs() << ProgName 460 << ": the 64-bit DWARF format is only supported for 64-bit " 461 "targets\n"; 462 return 1; 463 } 464 // If needsDwarfSectionOffsetDirective is true, we would eventually call 465 // MCStreamer::emitSymbolValue() with IsSectionRelative = true, but that 466 // is supported only for 4-byte long references. 467 if (MAI->needsDwarfSectionOffsetDirective()) { 468 errs() << ProgName << ": the 64-bit DWARF format is not supported for " 469 << TheTriple.normalize() << "\n"; 470 return 1; 471 } 472 Ctx.setDwarfFormat(dwarf::DWARF64); 473 } 474 if (!DwarfDebugFlags.empty()) 475 Ctx.setDwarfDebugFlags(StringRef(DwarfDebugFlags)); 476 if (!DwarfDebugProducer.empty()) 477 Ctx.setDwarfDebugProducer(StringRef(DwarfDebugProducer)); 478 if (!DebugCompilationDir.empty()) 479 Ctx.setCompilationDir(DebugCompilationDir); 480 else { 481 // If no compilation dir is set, try to use the current directory. 482 SmallString<128> CWD; 483 if (!sys::fs::current_path(CWD)) 484 Ctx.setCompilationDir(CWD); 485 } 486 for (const auto &Arg : DebugPrefixMap) { 487 const auto &KV = StringRef(Arg).split('='); 488 Ctx.addDebugPrefixMapEntry(std::string(KV.first), std::string(KV.second)); 489 } 490 if (!MainFileName.empty()) 491 Ctx.setMainFileName(MainFileName); 492 if (GenDwarfForAssembly) 493 Ctx.setGenDwarfRootFile(InputFilename, Buffer->getBuffer()); 494 495 sys::fs::OpenFlags Flags = (FileType == OFT_AssemblyFile) 496 ? sys::fs::OF_TextWithCRLF 497 : sys::fs::OF_None; 498 std::unique_ptr<ToolOutputFile> Out = GetOutputStream(OutputFilename, Flags); 499 if (!Out) 500 return 1; 501 502 std::unique_ptr<ToolOutputFile> DwoOut; 503 if (!SplitDwarfFile.empty()) { 504 if (FileType != OFT_ObjectFile) { 505 WithColor::error() << "dwo output only supported with object files\n"; 506 return 1; 507 } 508 DwoOut = GetOutputStream(SplitDwarfFile, sys::fs::OF_None); 509 if (!DwoOut) 510 return 1; 511 } 512 513 std::unique_ptr<buffer_ostream> BOS; 514 raw_pwrite_stream *OS = &Out->os(); 515 std::unique_ptr<MCStreamer> Str; 516 517 std::unique_ptr<MCInstrInfo> MCII(TheTarget->createMCInstrInfo()); 518 assert(MCII && "Unable to create instruction info!"); 519 520 MCInstPrinter *IP = nullptr; 521 if (FileType == OFT_AssemblyFile) { 522 IP = TheTarget->createMCInstPrinter(Triple(TripleName), OutputAsmVariant, 523 *MAI, *MCII, *MRI); 524 525 if (!IP) { 526 WithColor::error() 527 << "unable to create instruction printer for target triple '" 528 << TheTriple.normalize() << "' with assembly variant " 529 << OutputAsmVariant << ".\n"; 530 return 1; 531 } 532 533 for (StringRef Opt : DisassemblerOptions) 534 if (!IP->applyTargetSpecificCLOption(Opt)) { 535 WithColor::error() << "invalid disassembler option '" << Opt << "'\n"; 536 return 1; 537 } 538 539 // Set the display preference for hex vs. decimal immediates. 540 IP->setPrintImmHex(PrintImmHex); 541 542 // Set up the AsmStreamer. 543 std::unique_ptr<MCCodeEmitter> CE; 544 if (ShowEncoding) 545 CE.reset(TheTarget->createMCCodeEmitter(*MCII, Ctx)); 546 547 std::unique_ptr<MCAsmBackend> MAB( 548 TheTarget->createMCAsmBackend(*STI, *MRI, MCOptions)); 549 auto FOut = std::make_unique<formatted_raw_ostream>(*OS); 550 Str.reset( 551 TheTarget->createAsmStreamer(Ctx, std::move(FOut), /*asmverbose*/ true, 552 /*useDwarfDirectory*/ true, IP, 553 std::move(CE), std::move(MAB), ShowInst)); 554 555 } else if (FileType == OFT_Null) { 556 Str.reset(TheTarget->createNullStreamer(Ctx)); 557 } else { 558 assert(FileType == OFT_ObjectFile && "Invalid file type!"); 559 560 if (!Out->os().supportsSeeking()) { 561 BOS = std::make_unique<buffer_ostream>(Out->os()); 562 OS = BOS.get(); 563 } 564 565 MCCodeEmitter *CE = TheTarget->createMCCodeEmitter(*MCII, Ctx); 566 MCAsmBackend *MAB = TheTarget->createMCAsmBackend(*STI, *MRI, MCOptions); 567 Str.reset(TheTarget->createMCObjectStreamer( 568 TheTriple, Ctx, std::unique_ptr<MCAsmBackend>(MAB), 569 DwoOut ? MAB->createDwoObjectWriter(*OS, DwoOut->os()) 570 : MAB->createObjectWriter(*OS), 571 std::unique_ptr<MCCodeEmitter>(CE), *STI, MCOptions.MCRelaxAll, 572 MCOptions.MCIncrementalLinkerCompatible, 573 /*DWARFMustBeAtTheEnd*/ false)); 574 if (NoExecStack) 575 Str->initSections(true, *STI); 576 } 577 578 // Use Assembler information for parsing. 579 Str->setUseAssemblerInfoForParsing(true); 580 581 int Res = 1; 582 bool disassemble = false; 583 switch (Action) { 584 case AC_AsLex: 585 Res = AsLexInput(SrcMgr, *MAI, Out->os()); 586 break; 587 case AC_Assemble: 588 Res = AssembleInput(ProgName, TheTarget, SrcMgr, Ctx, *Str, *MAI, *STI, 589 *MCII, MCOptions); 590 break; 591 case AC_MDisassemble: 592 IP->setUseMarkup(true); 593 disassemble = true; 594 break; 595 case AC_CDisassemble: 596 IP->setUseColor(true); 597 disassemble = true; 598 break; 599 case AC_Disassemble: 600 disassemble = true; 601 break; 602 } 603 if (disassemble) 604 Res = Disassembler::disassemble(*TheTarget, TripleName, *STI, *Str, *Buffer, 605 SrcMgr, Ctx, MCOptions); 606 607 // Keep output if no errors. 608 if (Res == 0) { 609 Out->keep(); 610 if (DwoOut) 611 DwoOut->keep(); 612 } 613 return Res; 614 } 615