tools/llvm-readobj/llvm-readobj.cpp

   1 //===- llvm-readobj.cpp - Dump contents of an Object File -----------------===//
   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 is a tool similar to readelf, except it works on multiple object file
  11 // formats. The main purpose of this tool is to provide detailed output suitable
  12 // for FileCheck.
  13 //
  14 // Flags should be similar to readelf where supported, but the output format
  15 // does not need to be identical. The point is to not make users learn yet
  16 // another set of flags.
  17 //
  18 // Output should be specialized for each format where appropriate.
  19 //
  20 //===----------------------------------------------------------------------===//
  21
  22 #include "llvm-readobj.h"
  23 #include "Error.h"
  24 #include "ObjDumper.h"
  25 #include "WindowsResourceDumper.h"
  26 #include "llvm/DebugInfo/CodeView/MergingTypeTableBuilder.h"
  27 #include "llvm/Object/Archive.h"
  28 #include "llvm/Object/COFFImportFile.h"
  29 #include "llvm/Object/MachOUniversal.h"
  30 #include "llvm/Object/ObjectFile.h"
  31 #include "llvm/Object/WindowsResource.h"
  32 #include "llvm/Support/Casting.h"
  33 #include "llvm/Support/CommandLine.h"
  34 #include "llvm/Support/DataTypes.h"
  35 #include "llvm/Support/Debug.h"
  36 #include "llvm/Support/FileSystem.h"
  37 #include "llvm/Support/FormatVariadic.h"
  38 #include "llvm/Support/InitLLVM.h"
  39 #include "llvm/Support/Path.h"
  40 #include "llvm/Support/ScopedPrinter.h"
  41 #include "llvm/Support/TargetRegistry.h"
  42
  43 using namespace llvm;
  44 using namespace llvm::object;
  45
  46 namespace opts {
  47   cl::list<std::string> InputFilenames(cl::Positional,
  48     cl::desc("<input object files>"),
  49     cl::ZeroOrMore);
  50
  51   // -wide, -W
  52   cl::opt<bool> WideOutput("wide",
  53     cl::desc("Ignored for compatibility with GNU readelf"));
  54   cl::alias WideOutputShort("W",
  55     cl::desc("Alias for --wide"),
  56     cl::aliasopt(WideOutput));
  57
  58   // -file-headers, -h
  59   cl::opt<bool> FileHeaders("file-headers",
  60     cl::desc("Display file headers "));
  61   cl::alias FileHeadersShort("h",
  62     cl::desc("Alias for --file-headers"),
  63     cl::aliasopt(FileHeaders));
  64
  65   // -sections, -s, -S
  66   // Note: In GNU readelf, -s means --symbols!
  67   cl::opt<bool> Sections("sections",
  68     cl::desc("Display all sections."));
  69   cl::alias SectionsShort("s",
  70     cl::desc("Alias for --sections"),
  71     cl::aliasopt(Sections));
  72   cl::alias SectionsShortUpper("S",
  73     cl::desc("Alias for --sections"),
  74     cl::aliasopt(Sections));
  75
  76   // -section-relocations, -sr
  77   cl::opt<bool> SectionRelocations("section-relocations",
  78     cl::desc("Display relocations for each section shown."));
  79   cl::alias SectionRelocationsShort("sr",
  80     cl::desc("Alias for --section-relocations"),
  81     cl::aliasopt(SectionRelocations));
  82
  83   // -section-symbols, -st
  84   cl::opt<bool> SectionSymbols("section-symbols",
  85     cl::desc("Display symbols for each section shown."));
  86   cl::alias SectionSymbolsShort("st",
  87     cl::desc("Alias for --section-symbols"),
  88     cl::aliasopt(SectionSymbols));
  89
  90   // -section-data, -sd
  91   cl::opt<bool> SectionData("section-data",
  92     cl::desc("Display section data for each section shown."));
  93   cl::alias SectionDataShort("sd",
  94     cl::desc("Alias for --section-data"),
  95     cl::aliasopt(SectionData));
  96
  97   // -relocations, -r
  98   cl::opt<bool> Relocations("relocations",
  99     cl::desc("Display the relocation entries in the file"));
 100   cl::alias RelocationsShort("r",
 101     cl::desc("Alias for --relocations"),
 102     cl::aliasopt(Relocations));
 103
 104   // -notes, -n
 105   cl::opt<bool> Notes("notes", cl::desc("Display the ELF notes in the file"));
 106   cl::alias NotesShort("n", cl::desc("Alias for --notes"), cl::aliasopt(Notes));
 107
 108   // -dyn-relocations
 109   cl::opt<bool> DynRelocs("dyn-relocations",
 110     cl::desc("Display the dynamic relocation entries in the file"));
 111
 112   // -symbols, -t
 113   cl::opt<bool> Symbols("symbols",
 114     cl::desc("Display the symbol table"));
 115   cl::alias SymbolsShort("t",
 116     cl::desc("Alias for --symbols"),
 117     cl::aliasopt(Symbols));
 118
 119   // -dyn-symbols, -dt
 120   cl::opt<bool> DynamicSymbols("dyn-symbols",
 121     cl::desc("Display the dynamic symbol table"));
 122   cl::alias DynamicSymbolsShort("dt",
 123     cl::desc("Alias for --dyn-symbols"),
 124     cl::aliasopt(DynamicSymbols));
 125
 126   // -unwind, -u
 127   cl::opt<bool> UnwindInfo("unwind",
 128     cl::desc("Display unwind information"));
 129   cl::alias UnwindInfoShort("u",
 130     cl::desc("Alias for --unwind"),
 131     cl::aliasopt(UnwindInfo));
 132
 133   // -dynamic-table
 134   cl::opt<bool> DynamicTable("dynamic-table",
 135     cl::desc("Display the ELF .dynamic section table"));
 136   cl::alias DynamicTableShort("d", cl::desc("Alias for --dynamic-table"),
 137                               cl::aliasopt(DynamicTable));
 138
 139   // -needed-libs
 140   cl::opt<bool> NeededLibraries("needed-libs",
 141     cl::desc("Display the needed libraries"));
 142
 143   // -program-headers
 144   cl::opt<bool> ProgramHeaders("program-headers",
 145     cl::desc("Display ELF program headers"));
 146   cl::alias ProgramHeadersShort("l", cl::desc("Alias for --program-headers"),
 147                                 cl::aliasopt(ProgramHeaders));
 148
 149   // -string-dump
 150   cl::list<std::string> StringDump("string-dump", cl::desc("<number|name>"),
 151                                    cl::ZeroOrMore);
 152   cl::alias StringDumpShort("p", cl::desc("Alias for --string-dump"),
 153                             cl::aliasopt(StringDump));
 154
 155   // -hex-dump
 156   cl::list<std::string> HexDump("hex-dump", cl::desc("<number|name>"),
 157                                 cl::ZeroOrMore);
 158   cl::alias HexDumpShort("x", cl::desc("Alias for --hex-dump"),
 159                          cl::aliasopt(HexDump));
 160
 161   // -hash-table
 162   cl::opt<bool> HashTable("hash-table",
 163     cl::desc("Display ELF hash table"));
 164
 165   // -gnu-hash-table
 166   cl::opt<bool> GnuHashTable("gnu-hash-table",
 167     cl::desc("Display ELF .gnu.hash section"));
 168
 169   // -expand-relocs
 170   cl::opt<bool> ExpandRelocs("expand-relocs",
 171     cl::desc("Expand each shown relocation to multiple lines"));
 172
 173   // -raw-relr
 174   cl::opt<bool> RawRelr("raw-relr",
 175     cl::desc("Do not decode relocations in SHT_RELR section, display raw contents"));
 176
 177   // -codeview
 178   cl::opt<bool> CodeView("codeview",
 179                          cl::desc("Display CodeView debug information"));
 180
 181   // -codeview-merged-types
 182   cl::opt<bool>
 183       CodeViewMergedTypes("codeview-merged-types",
 184                           cl::desc("Display the merged CodeView type stream"));
 185
 186   // -codeview-subsection-bytes
 187   cl::opt<bool> CodeViewSubsectionBytes(
 188       "codeview-subsection-bytes",
 189       cl::desc("Dump raw contents of codeview debug sections and records"));
 190
 191   // -arm-attributes, -a
 192   cl::opt<bool> ARMAttributes("arm-attributes",
 193                               cl::desc("Display the ARM attributes section"));
 194   cl::alias ARMAttributesShort("a", cl::desc("Alias for --arm-attributes"),
 195                                cl::aliasopt(ARMAttributes));
 196
 197   // -mips-plt-got
 198   cl::opt<bool>
 199   MipsPLTGOT("mips-plt-got",
 200              cl::desc("Display the MIPS GOT and PLT GOT sections"));
 201
 202   // -mips-abi-flags
 203   cl::opt<bool> MipsABIFlags("mips-abi-flags",
 204                              cl::desc("Display the MIPS.abiflags section"));
 205
 206   // -mips-reginfo
 207   cl::opt<bool> MipsReginfo("mips-reginfo",
 208                             cl::desc("Display the MIPS .reginfo section"));
 209
 210   // -mips-options
 211   cl::opt<bool> MipsOptions("mips-options",
 212                             cl::desc("Display the MIPS .MIPS.options section"));
 213
 214   // -coff-imports
 215   cl::opt<bool>
 216   COFFImports("coff-imports", cl::desc("Display the PE/COFF import table"));
 217
 218   // -coff-exports
 219   cl::opt<bool>
 220   COFFExports("coff-exports", cl::desc("Display the PE/COFF export table"));
 221
 222   // -coff-directives
 223   cl::opt<bool>
 224   COFFDirectives("coff-directives",
 225                  cl::desc("Display the PE/COFF .drectve section"));
 226
 227   // -coff-basereloc
 228   cl::opt<bool>
 229   COFFBaseRelocs("coff-basereloc",
 230                  cl::desc("Display the PE/COFF .reloc section"));
 231
 232   // -coff-debug-directory
 233   cl::opt<bool>
 234   COFFDebugDirectory("coff-debug-directory",
 235                      cl::desc("Display the PE/COFF debug directory"));
 236
 237   // -coff-resources
 238   cl::opt<bool> COFFResources("coff-resources",
 239                               cl::desc("Display the PE/COFF .rsrc section"));
 240
 241   // -coff-load-config
 242   cl::opt<bool>
 243   COFFLoadConfig("coff-load-config",
 244                  cl::desc("Display the PE/COFF load config"));
 245
 246   // -elf-linker-options
 247   cl::opt<bool>
 248   ELFLinkerOptions("elf-linker-options",
 249                    cl::desc("Display the ELF .linker-options section"));
 250
 251   // -macho-data-in-code
 252   cl::opt<bool>
 253   MachODataInCode("macho-data-in-code",
 254                   cl::desc("Display MachO Data in Code command"));
 255
 256   // -macho-indirect-symbols
 257   cl::opt<bool>
 258   MachOIndirectSymbols("macho-indirect-symbols",
 259                   cl::desc("Display MachO indirect symbols"));
 260
 261   // -macho-linker-options
 262   cl::opt<bool>
 263   MachOLinkerOptions("macho-linker-options",
 264                   cl::desc("Display MachO linker options"));
 265
 266   // -macho-segment
 267   cl::opt<bool>
 268   MachOSegment("macho-segment",
 269                   cl::desc("Display MachO Segment command"));
 270
 271   // -macho-version-min
 272   cl::opt<bool>
 273   MachOVersionMin("macho-version-min",
 274                   cl::desc("Display MachO version min command"));
 275
 276   // -macho-dysymtab
 277   cl::opt<bool>
 278   MachODysymtab("macho-dysymtab",
 279                   cl::desc("Display MachO Dysymtab command"));
 280
 281   // -stackmap
 282   cl::opt<bool>
 283   PrintStackMap("stackmap",
 284                 cl::desc("Display contents of stackmap section"));
 285
 286   // -version-info
 287   cl::opt<bool>
 288       VersionInfo("version-info",
 289                   cl::desc("Display ELF version sections (if present)"));
 290   cl::alias VersionInfoShort("V", cl::desc("Alias for -version-info"),
 291                              cl::aliasopt(VersionInfo));
 292
 293   cl::opt<bool> SectionGroups("elf-section-groups",
 294                               cl::desc("Display ELF section group contents"));
 295   cl::alias SectionGroupsShort("g", cl::desc("Alias for -elf-sections-groups"),
 296                                cl::aliasopt(SectionGroups));
 297   cl::opt<bool> HashHistogram(
 298       "elf-hash-histogram",
 299       cl::desc("Display bucket list histogram for hash sections"));
 300   cl::alias HashHistogramShort("I", cl::desc("Alias for -elf-hash-histogram"),
 301                                cl::aliasopt(HashHistogram));
 302
 303   cl::opt<bool> CGProfile("elf-cg-profile", cl::desc("Display callgraph profile section"));
 304
 305   cl::opt<bool> Addrsig("addrsig",
 306                         cl::desc("Display address-significance table"));
 307
 308   cl::opt<OutputStyleTy>
 309       Output("elf-output-style", cl::desc("Specify ELF dump style"),
 310              cl::values(clEnumVal(LLVM, "LLVM default style"),
 311                         clEnumVal(GNU, "GNU readelf style")),
 312              cl::init(LLVM));
 313 } // namespace opts
 314
 315 namespace llvm {
 316
 317 LLVM_ATTRIBUTE_NORETURN void reportError(Twine Msg) {
 318   errs() << "\nError reading file: " << Msg << ".\n";
 319   errs().flush();
 320   exit(1);
 321 }
 322
 323 void error(Error EC) {
 324   if (!EC)
 325     return;
 326   handleAllErrors(std::move(EC),
 327                   [&](const ErrorInfoBase &EI) { reportError(EI.message()); });
 328 }
 329
 330 void error(std::error_code EC) {
 331   if (!EC)
 332     return;
 333   reportError(EC.message());
 334 }
 335
 336 bool relocAddressLess(RelocationRef a, RelocationRef b) {
 337   return a.getOffset() < b.getOffset();
 338 }
 339
 340 } // namespace llvm
 341
 342 static void reportError(StringRef Input, std::error_code EC) {
 343   if (Input == "-")
 344     Input = "<stdin>";
 345
 346   reportError(Twine(Input) + ": " + EC.message());
 347 }
 348
 349 static void reportError(StringRef Input, Error Err) {
 350   if (Input == "-")
 351     Input = "<stdin>";
 352   std::string ErrMsg;
 353   {
 354     raw_string_ostream ErrStream(ErrMsg);
 355     logAllUnhandledErrors(std::move(Err), ErrStream, Input + ": ");
 356   }
 357   reportError(ErrMsg);
 358 }
 359
 360 static bool isMipsArch(unsigned Arch) {
 361   switch (Arch) {
 362   case llvm::Triple::mips:
 363   case llvm::Triple::mipsel:
 364   case llvm::Triple::mips64:
 365   case llvm::Triple::mips64el:
 366     return true;
 367   default:
 368     return false;
 369   }
 370 }
 371 namespace {
 372 struct ReadObjTypeTableBuilder {
 373   ReadObjTypeTableBuilder()
 374       : Allocator(), IDTable(Allocator), TypeTable(Allocator) {}
 375
 376   llvm::BumpPtrAllocator Allocator;
 377   llvm::codeview::MergingTypeTableBuilder IDTable;
 378   llvm::codeview::MergingTypeTableBuilder TypeTable;
 379 };
 380 }
 381 static ReadObjTypeTableBuilder CVTypes;
 382
 383 /// Creates an format-specific object file dumper.
 384 static std::error_code createDumper(const ObjectFile *Obj,
 385                                     ScopedPrinter &Writer,
 386                                     std::unique_ptr<ObjDumper> &Result) {
 387   if (!Obj)
 388     return readobj_error::unsupported_file_format;
 389
 390   if (Obj->isCOFF())
 391     return createCOFFDumper(Obj, Writer, Result);
 392   if (Obj->isELF())
 393     return createELFDumper(Obj, Writer, Result);
 394   if (Obj->isMachO())
 395     return createMachODumper(Obj, Writer, Result);
 396   if (Obj->isWasm())
 397     return createWasmDumper(Obj, Writer, Result);
 398
 399   return readobj_error::unsupported_obj_file_format;
 400 }
 401
 402 /// Dumps the specified object file.
 403 static void dumpObject(const ObjectFile *Obj, ScopedPrinter &Writer) {
 404   std::unique_ptr<ObjDumper> Dumper;
 405   if (std::error_code EC = createDumper(Obj, Writer, Dumper))
 406     reportError(Obj->getFileName(), EC);
 407
 408   if (opts::Output == opts::LLVM) {
 409     Writer.startLine() << "\n";
 410     Writer.printString("File", Obj->getFileName());
 411     Writer.printString("Format", Obj->getFileFormatName());
 412     Writer.printString("Arch", Triple::getArchTypeName(
 413                                    (llvm::Triple::ArchType)Obj->getArch()));
 414     Writer.printString("AddressSize",
 415                        formatv("{0}bit", 8 * Obj->getBytesInAddress()));
 416     Dumper->printLoadName();
 417   }
 418
 419   if (opts::FileHeaders)
 420     Dumper->printFileHeaders();
 421   if (opts::Sections)
 422     Dumper->printSections();
 423   if (opts::Relocations)
 424     Dumper->printRelocations();
 425   if (opts::DynRelocs)
 426     Dumper->printDynamicRelocations();
 427   if (opts::Symbols)
 428     Dumper->printSymbols();
 429   if (opts::DynamicSymbols)
 430     Dumper->printDynamicSymbols();
 431   if (opts::UnwindInfo)
 432     Dumper->printUnwindInfo();
 433   if (opts::DynamicTable)
 434     Dumper->printDynamicTable();
 435   if (opts::NeededLibraries)
 436     Dumper->printNeededLibraries();
 437   if (opts::ProgramHeaders)
 438     Dumper->printProgramHeaders();
 439   if (!opts::StringDump.empty())
 440     llvm::for_each(opts::StringDump, [&Dumper, Obj](StringRef SectionName) {
 441       Dumper->printSectionAsString(Obj, SectionName);
 442     });
 443   if (!opts::HexDump.empty())
 444     llvm::for_each(opts::HexDump, [&Dumper, Obj](StringRef SectionName) {
 445       Dumper->printSectionAsHex(Obj, SectionName);
 446     });
 447   if (opts::HashTable)
 448     Dumper->printHashTable();
 449   if (opts::GnuHashTable)
 450     Dumper->printGnuHashTable();
 451   if (opts::VersionInfo)
 452     Dumper->printVersionInfo();
 453   if (Obj->isELF()) {
 454     if (opts::ELFLinkerOptions)
 455       Dumper->printELFLinkerOptions();
 456     if (Obj->getArch() == llvm::Triple::arm)
 457       if (opts::ARMAttributes)
 458         Dumper->printAttributes();
 459     if (isMipsArch(Obj->getArch())) {
 460       if (opts::MipsPLTGOT)
 461         Dumper->printMipsPLTGOT();
 462       if (opts::MipsABIFlags)
 463         Dumper->printMipsABIFlags();
 464       if (opts::MipsReginfo)
 465         Dumper->printMipsReginfo();
 466       if (opts::MipsOptions)
 467         Dumper->printMipsOptions();
 468     }
 469     if (opts::SectionGroups)
 470       Dumper->printGroupSections();
 471     if (opts::HashHistogram)
 472       Dumper->printHashHistogram();
 473     if (opts::CGProfile)
 474       Dumper->printCGProfile();
 475     if (opts::Addrsig)
 476       Dumper->printAddrsig();
 477     if (opts::Notes)
 478       Dumper->printNotes();
 479   }
 480   if (Obj->isCOFF()) {
 481     if (opts::COFFImports)
 482       Dumper->printCOFFImports();
 483     if (opts::COFFExports)
 484       Dumper->printCOFFExports();
 485     if (opts::COFFDirectives)
 486       Dumper->printCOFFDirectives();
 487     if (opts::COFFBaseRelocs)
 488       Dumper->printCOFFBaseReloc();
 489     if (opts::COFFDebugDirectory)
 490       Dumper->printCOFFDebugDirectory();
 491     if (opts::COFFResources)
 492       Dumper->printCOFFResources();
 493     if (opts::COFFLoadConfig)
 494       Dumper->printCOFFLoadConfig();
 495     if (opts::Addrsig)
 496       Dumper->printAddrsig();
 497     if (opts::CodeView)
 498       Dumper->printCodeViewDebugInfo();
 499     if (opts::CodeViewMergedTypes)
 500       Dumper->mergeCodeViewTypes(CVTypes.IDTable, CVTypes.TypeTable);
 501   }
 502   if (Obj->isMachO()) {
 503     if (opts::MachODataInCode)
 504       Dumper->printMachODataInCode();
 505     if (opts::MachOIndirectSymbols)
 506       Dumper->printMachOIndirectSymbols();
 507     if (opts::MachOLinkerOptions)
 508       Dumper->printMachOLinkerOptions();
 509     if (opts::MachOSegment)
 510       Dumper->printMachOSegment();
 511     if (opts::MachOVersionMin)
 512       Dumper->printMachOVersionMin();
 513     if (opts::MachODysymtab)
 514       Dumper->printMachODysymtab();
 515   }
 516   if (opts::PrintStackMap)
 517     Dumper->printStackMap();
 518 }
 519
 520 /// Dumps each object file in \a Arc;
 521 static void dumpArchive(const Archive *Arc, ScopedPrinter &Writer) {
 522   Error Err = Error::success();
 523   for (auto &Child : Arc->children(Err)) {
 524     Expected<std::unique_ptr<Binary>> ChildOrErr = Child.getAsBinary();
 525     if (!ChildOrErr) {
 526       if (auto E = isNotObjectErrorInvalidFileType(ChildOrErr.takeError())) {
 527         reportError(Arc->getFileName(), ChildOrErr.takeError());
 528       }
 529       continue;
 530     }
 531     if (ObjectFile *Obj = dyn_cast<ObjectFile>(&*ChildOrErr.get()))
 532       dumpObject(Obj, Writer);
 533     else if (COFFImportFile *Imp = dyn_cast<COFFImportFile>(&*ChildOrErr.get()))
 534       dumpCOFFImportFile(Imp, Writer);
 535     else
 536       reportError(Arc->getFileName(), readobj_error::unrecognized_file_format);
 537   }
 538   if (Err)
 539     reportError(Arc->getFileName(), std::move(Err));
 540 }
 541
 542 /// Dumps each object file in \a MachO Universal Binary;
 543 static void dumpMachOUniversalBinary(const MachOUniversalBinary *UBinary,
 544                                      ScopedPrinter &Writer) {
 545   for (const MachOUniversalBinary::ObjectForArch &Obj : UBinary->objects()) {
 546     Expected<std::unique_ptr<MachOObjectFile>> ObjOrErr = Obj.getAsObjectFile();
 547     if (ObjOrErr)
 548       dumpObject(&*ObjOrErr.get(), Writer);
 549     else if (auto E = isNotObjectErrorInvalidFileType(ObjOrErr.takeError())) {
 550       reportError(UBinary->getFileName(), ObjOrErr.takeError());
 551     }
 552     else if (Expected<std::unique_ptr<Archive>> AOrErr = Obj.getAsArchive())
 553       dumpArchive(&*AOrErr.get(), Writer);
 554   }
 555 }
 556
 557 /// Dumps \a WinRes, Windows Resource (.res) file;
 558 static void dumpWindowsResourceFile(WindowsResource *WinRes) {
 559   ScopedPrinter Printer{outs()};
 560   WindowsRes::Dumper Dumper(WinRes, Printer);
 561   if (auto Err = Dumper.printData())
 562     reportError(WinRes->getFileName(), std::move(Err));
 563 }
 564
 565
 566 /// Opens \a File and dumps it.
 567 static void dumpInput(StringRef File) {
 568   ScopedPrinter Writer(outs());
 569
 570   // Attempt to open the binary.
 571   Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(File);
 572   if (!BinaryOrErr)
 573     reportError(File, BinaryOrErr.takeError());
 574   Binary &Binary = *BinaryOrErr.get().getBinary();
 575
 576   if (Archive *Arc = dyn_cast<Archive>(&Binary))
 577     dumpArchive(Arc, Writer);
 578   else if (MachOUniversalBinary *UBinary =
 579                dyn_cast<MachOUniversalBinary>(&Binary))
 580     dumpMachOUniversalBinary(UBinary, Writer);
 581   else if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary))
 582     dumpObject(Obj, Writer);
 583   else if (COFFImportFile *Import = dyn_cast<COFFImportFile>(&Binary))
 584     dumpCOFFImportFile(Import, Writer);
 585   else if (WindowsResource *WinRes = dyn_cast<WindowsResource>(&Binary))
 586     dumpWindowsResourceFile(WinRes);
 587   else
 588     reportError(File, readobj_error::unrecognized_file_format);
 589 }
 590
 591 int main(int argc, const char *argv[]) {
 592   InitLLVM X(argc, argv);
 593
 594   // Register the target printer for --version.
 595   cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);
 596
 597   opts::WideOutput.setHiddenFlag(cl::Hidden);
 598
 599   if (sys::path::stem(argv[0]).find("readelf") != StringRef::npos)
 600     opts::Output = opts::GNU;
 601
 602   cl::ParseCommandLineOptions(argc, argv, "LLVM Object Reader\n");
 603
 604   // Default to stdin if no filename is specified.
 605   if (opts::InputFilenames.size() == 0)
 606     opts::InputFilenames.push_back("-");
 607
 608   llvm::for_each(opts::InputFilenames, dumpInput);
 609
 610   if (opts::CodeViewMergedTypes) {
 611     ScopedPrinter W(outs());
 612     dumpCodeViewMergedTypes(W, CVTypes.IDTable, CVTypes.TypeTable);
 613   }
 614
 615   return 0;
 616 }