1 //===-- llvm-objdump.cpp - Object file dumping utility for llvm -----------===// 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 program is a utility that works like binutils "objdump", that is, it 11 // dumps out a plethora of information about an object file depending on the 12 // flags. 13 // 14 //===----------------------------------------------------------------------===// 15 16 #include "llvm-objdump.h" 17 #include "MCFunction.h" 18 #include "llvm/Object/Archive.h" 19 #include "llvm/Object/COFF.h" 20 #include "llvm/Object/ObjectFile.h" 21 #include "llvm/ADT/OwningPtr.h" 22 #include "llvm/ADT/StringExtras.h" 23 #include "llvm/ADT/Triple.h" 24 #include "llvm/ADT/STLExtras.h" 25 #include "llvm/MC/MCAsmInfo.h" 26 #include "llvm/MC/MCDisassembler.h" 27 #include "llvm/MC/MCInst.h" 28 #include "llvm/MC/MCInstPrinter.h" 29 #include "llvm/MC/MCInstrInfo.h" 30 #include "llvm/MC/MCRegisterInfo.h" 31 #include "llvm/MC/MCSubtargetInfo.h" 32 #include "llvm/Support/Casting.h" 33 #include "llvm/Support/CommandLine.h" 34 #include "llvm/Support/Debug.h" 35 #include "llvm/Support/FileSystem.h" 36 #include "llvm/Support/Format.h" 37 #include "llvm/Support/GraphWriter.h" 38 #include "llvm/Support/Host.h" 39 #include "llvm/Support/ManagedStatic.h" 40 #include "llvm/Support/MemoryBuffer.h" 41 #include "llvm/Support/MemoryObject.h" 42 #include "llvm/Support/PrettyStackTrace.h" 43 #include "llvm/Support/Signals.h" 44 #include "llvm/Support/SourceMgr.h" 45 #include "llvm/Support/TargetRegistry.h" 46 #include "llvm/Support/TargetSelect.h" 47 #include "llvm/Support/raw_ostream.h" 48 #include "llvm/Support/system_error.h" 49 #include <algorithm> 50 #include <cctype> 51 #include <cstring> 52 using namespace llvm; 53 using namespace object; 54 55 static cl::list<std::string> 56 InputFilenames(cl::Positional, cl::desc("<input object files>"),cl::ZeroOrMore); 57 58 static cl::opt<bool> 59 Disassemble("disassemble", 60 cl::desc("Display assembler mnemonics for the machine instructions")); 61 static cl::alias 62 Disassembled("d", cl::desc("Alias for --disassemble"), 63 cl::aliasopt(Disassemble)); 64 65 static cl::opt<bool> 66 Relocations("r", cl::desc("Display the relocation entries in the file")); 67 68 static cl::opt<bool> 69 SectionContents("s", cl::desc("Display the content of each section")); 70 71 static cl::opt<bool> 72 SymbolTable("t", cl::desc("Display the symbol table")); 73 74 static cl::opt<bool> 75 MachO("macho", cl::desc("Use MachO specific object file parser")); 76 static cl::alias 77 MachOm("m", cl::desc("Alias for --macho"), cl::aliasopt(MachO)); 78 79 cl::opt<std::string> 80 llvm::TripleName("triple", cl::desc("Target triple to disassemble for, " 81 "see -version for available targets")); 82 83 cl::opt<std::string> 84 llvm::ArchName("arch", cl::desc("Target arch to disassemble for, " 85 "see -version for available targets")); 86 87 static cl::opt<bool> 88 SectionHeaders("section-headers", cl::desc("Display summaries of the headers " 89 "for each section.")); 90 static cl::alias 91 SectionHeadersShort("headers", cl::desc("Alias for --section-headers"), 92 cl::aliasopt(SectionHeaders)); 93 static cl::alias 94 SectionHeadersShorter("h", cl::desc("Alias for --section-headers"), 95 cl::aliasopt(SectionHeaders)); 96 97 static cl::list<std::string> 98 MAttrs("mattr", 99 cl::CommaSeparated, 100 cl::desc("Target specific attributes"), 101 cl::value_desc("a1,+a2,-a3,...")); 102 103 static StringRef ToolName; 104 105 static bool error(error_code ec) { 106 if (!ec) return false; 107 108 outs() << ToolName << ": error reading file: " << ec.message() << ".\n"; 109 outs().flush(); 110 return true; 111 } 112 113 static const Target *getTarget(const ObjectFile *Obj = NULL) { 114 // Figure out the target triple. 115 llvm::Triple TheTriple("unknown-unknown-unknown"); 116 if (TripleName.empty()) { 117 if (Obj) 118 TheTriple.setArch(Triple::ArchType(Obj->getArch())); 119 } else 120 TheTriple.setTriple(Triple::normalize(TripleName)); 121 122 // Get the target specific parser. 123 std::string Error; 124 const Target *TheTarget = TargetRegistry::lookupTarget(ArchName, TheTriple, 125 Error); 126 if (!TheTarget) { 127 errs() << ToolName << ": " << Error; 128 return 0; 129 } 130 131 // Update the triple name and return the found target. 132 TripleName = TheTriple.getTriple(); 133 return TheTarget; 134 } 135 136 void llvm::StringRefMemoryObject::anchor() { } 137 138 void llvm::DumpBytes(StringRef bytes) { 139 static const char hex_rep[] = "0123456789abcdef"; 140 // FIXME: The real way to do this is to figure out the longest instruction 141 // and align to that size before printing. I'll fix this when I get 142 // around to outputting relocations. 143 // 15 is the longest x86 instruction 144 // 3 is for the hex rep of a byte + a space. 145 // 1 is for the null terminator. 146 enum { OutputSize = (15 * 3) + 1 }; 147 char output[OutputSize]; 148 149 assert(bytes.size() <= 15 150 && "DumpBytes only supports instructions of up to 15 bytes"); 151 memset(output, ' ', sizeof(output)); 152 unsigned index = 0; 153 for (StringRef::iterator i = bytes.begin(), 154 e = bytes.end(); i != e; ++i) { 155 output[index] = hex_rep[(*i & 0xF0) >> 4]; 156 output[index + 1] = hex_rep[*i & 0xF]; 157 index += 3; 158 } 159 160 output[sizeof(output) - 1] = 0; 161 outs() << output; 162 } 163 164 static bool RelocAddressLess(RelocationRef a, RelocationRef b) { 165 uint64_t a_addr, b_addr; 166 if (error(a.getAddress(a_addr))) return false; 167 if (error(b.getAddress(b_addr))) return false; 168 return a_addr < b_addr; 169 } 170 171 static void DisassembleObject(const ObjectFile *Obj, bool InlineRelocs) { 172 const Target *TheTarget = getTarget(Obj); 173 // getTarget() will have already issued a diagnostic if necessary, so 174 // just bail here if it failed. 175 if (!TheTarget) 176 return; 177 178 // Package up features to be passed to target/subtarget 179 std::string FeaturesStr; 180 if (MAttrs.size()) { 181 SubtargetFeatures Features; 182 for (unsigned i = 0; i != MAttrs.size(); ++i) 183 Features.AddFeature(MAttrs[i]); 184 FeaturesStr = Features.getString(); 185 } 186 187 error_code ec; 188 for (section_iterator i = Obj->begin_sections(), 189 e = Obj->end_sections(); 190 i != e; i.increment(ec)) { 191 if (error(ec)) break; 192 bool text; 193 if (error(i->isText(text))) break; 194 if (!text) continue; 195 196 uint64_t SectionAddr; 197 if (error(i->getAddress(SectionAddr))) break; 198 199 // Make a list of all the symbols in this section. 200 std::vector<std::pair<uint64_t, StringRef> > Symbols; 201 for (symbol_iterator si = Obj->begin_symbols(), 202 se = Obj->end_symbols(); 203 si != se; si.increment(ec)) { 204 bool contains; 205 if (!error(i->containsSymbol(*si, contains)) && contains) { 206 uint64_t Address; 207 if (error(si->getAddress(Address))) break; 208 Address -= SectionAddr; 209 210 StringRef Name; 211 if (error(si->getName(Name))) break; 212 Symbols.push_back(std::make_pair(Address, Name)); 213 } 214 } 215 216 // Sort the symbols by address, just in case they didn't come in that way. 217 array_pod_sort(Symbols.begin(), Symbols.end()); 218 219 // Make a list of all the relocations for this section. 220 std::vector<RelocationRef> Rels; 221 if (InlineRelocs) { 222 for (relocation_iterator ri = i->begin_relocations(), 223 re = i->end_relocations(); 224 ri != re; ri.increment(ec)) { 225 if (error(ec)) break; 226 Rels.push_back(*ri); 227 } 228 } 229 230 // Sort relocations by address. 231 std::sort(Rels.begin(), Rels.end(), RelocAddressLess); 232 233 StringRef name; 234 if (error(i->getName(name))) break; 235 outs() << "Disassembly of section " << name << ':'; 236 237 // If the section has no symbols just insert a dummy one and disassemble 238 // the whole section. 239 if (Symbols.empty()) 240 Symbols.push_back(std::make_pair(0, name)); 241 242 // Set up disassembler. 243 OwningPtr<const MCAsmInfo> AsmInfo(TheTarget->createMCAsmInfo(TripleName)); 244 245 if (!AsmInfo) { 246 errs() << "error: no assembly info for target " << TripleName << "\n"; 247 return; 248 } 249 250 OwningPtr<const MCSubtargetInfo> STI( 251 TheTarget->createMCSubtargetInfo(TripleName, "", FeaturesStr)); 252 253 if (!STI) { 254 errs() << "error: no subtarget info for target " << TripleName << "\n"; 255 return; 256 } 257 258 OwningPtr<const MCDisassembler> DisAsm( 259 TheTarget->createMCDisassembler(*STI)); 260 if (!DisAsm) { 261 errs() << "error: no disassembler for target " << TripleName << "\n"; 262 return; 263 } 264 265 OwningPtr<const MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TripleName)); 266 if (!MRI) { 267 errs() << "error: no register info for target " << TripleName << "\n"; 268 return; 269 } 270 271 OwningPtr<const MCInstrInfo> MII(TheTarget->createMCInstrInfo()); 272 if (!MII) { 273 errs() << "error: no instruction info for target " << TripleName << "\n"; 274 return; 275 } 276 277 int AsmPrinterVariant = AsmInfo->getAssemblerDialect(); 278 OwningPtr<MCInstPrinter> IP(TheTarget->createMCInstPrinter( 279 AsmPrinterVariant, *AsmInfo, *MII, *MRI, *STI)); 280 if (!IP) { 281 errs() << "error: no instruction printer for target " << TripleName 282 << '\n'; 283 return; 284 } 285 286 StringRef Bytes; 287 if (error(i->getContents(Bytes))) break; 288 StringRefMemoryObject memoryObject(Bytes); 289 uint64_t Size; 290 uint64_t Index; 291 uint64_t SectSize; 292 if (error(i->getSize(SectSize))) break; 293 294 std::vector<RelocationRef>::const_iterator rel_cur = Rels.begin(); 295 std::vector<RelocationRef>::const_iterator rel_end = Rels.end(); 296 // Disassemble symbol by symbol. 297 for (unsigned si = 0, se = Symbols.size(); si != se; ++si) { 298 uint64_t Start = Symbols[si].first; 299 uint64_t End; 300 // The end is either the size of the section or the beginning of the next 301 // symbol. 302 if (si == se - 1) 303 End = SectSize; 304 // Make sure this symbol takes up space. 305 else if (Symbols[si + 1].first != Start) 306 End = Symbols[si + 1].first - 1; 307 else 308 // This symbol has the same address as the next symbol. Skip it. 309 continue; 310 311 outs() << '\n' << Symbols[si].second << ":\n"; 312 313 #ifndef NDEBUG 314 raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls(); 315 #else 316 raw_ostream &DebugOut = nulls(); 317 #endif 318 319 for (Index = Start; Index < End; Index += Size) { 320 MCInst Inst; 321 322 if (DisAsm->getInstruction(Inst, Size, memoryObject, Index, 323 DebugOut, nulls())) { 324 outs() << format("%8" PRIx64 ":\t", SectionAddr + Index); 325 DumpBytes(StringRef(Bytes.data() + Index, Size)); 326 IP->printInst(&Inst, outs(), ""); 327 outs() << "\n"; 328 } else { 329 errs() << ToolName << ": warning: invalid instruction encoding\n"; 330 if (Size == 0) 331 Size = 1; // skip illegible bytes 332 } 333 334 // Print relocation for instruction. 335 while (rel_cur != rel_end) { 336 bool hidden = false; 337 uint64_t addr; 338 SmallString<16> name; 339 SmallString<32> val; 340 341 // If this relocation is hidden, skip it. 342 if (error(rel_cur->getHidden(hidden))) goto skip_print_rel; 343 if (hidden) goto skip_print_rel; 344 345 if (error(rel_cur->getAddress(addr))) goto skip_print_rel; 346 // Stop when rel_cur's address is past the current instruction. 347 if (addr >= Index + Size) break; 348 if (error(rel_cur->getTypeName(name))) goto skip_print_rel; 349 if (error(rel_cur->getValueString(val))) goto skip_print_rel; 350 351 outs() << format("\t\t\t%8" PRIx64 ": ", SectionAddr + addr) << name 352 << "\t" << val << "\n"; 353 354 skip_print_rel: 355 ++rel_cur; 356 } 357 } 358 } 359 } 360 } 361 362 static void PrintRelocations(const ObjectFile *o) { 363 error_code ec; 364 for (section_iterator si = o->begin_sections(), se = o->end_sections(); 365 si != se; si.increment(ec)){ 366 if (error(ec)) return; 367 if (si->begin_relocations() == si->end_relocations()) 368 continue; 369 StringRef secname; 370 if (error(si->getName(secname))) continue; 371 outs() << "RELOCATION RECORDS FOR [" << secname << "]:\n"; 372 for (relocation_iterator ri = si->begin_relocations(), 373 re = si->end_relocations(); 374 ri != re; ri.increment(ec)) { 375 if (error(ec)) return; 376 377 bool hidden; 378 uint64_t address; 379 SmallString<32> relocname; 380 SmallString<32> valuestr; 381 if (error(ri->getHidden(hidden))) continue; 382 if (hidden) continue; 383 if (error(ri->getTypeName(relocname))) continue; 384 if (error(ri->getAddress(address))) continue; 385 if (error(ri->getValueString(valuestr))) continue; 386 outs() << address << " " << relocname << " " << valuestr << "\n"; 387 } 388 outs() << "\n"; 389 } 390 } 391 392 static void PrintSectionHeaders(const ObjectFile *o) { 393 outs() << "Sections:\n" 394 "Idx Name Size Address Type\n"; 395 error_code ec; 396 unsigned i = 0; 397 for (section_iterator si = o->begin_sections(), se = o->end_sections(); 398 si != se; si.increment(ec)) { 399 if (error(ec)) return; 400 StringRef Name; 401 if (error(si->getName(Name))) return; 402 uint64_t Address; 403 if (error(si->getAddress(Address))) return; 404 uint64_t Size; 405 if (error(si->getSize(Size))) return; 406 bool Text, Data, BSS; 407 if (error(si->isText(Text))) return; 408 if (error(si->isData(Data))) return; 409 if (error(si->isBSS(BSS))) return; 410 std::string Type = (std::string(Text ? "TEXT " : "") + 411 (Data ? "DATA " : "") + (BSS ? "BSS" : "")); 412 outs() << format("%3d %-13s %09" PRIx64 " %017" PRIx64 " %s\n", 413 i, Name.str().c_str(), Size, Address, Type.c_str()); 414 ++i; 415 } 416 } 417 418 static void PrintSectionContents(const ObjectFile *o) { 419 error_code ec; 420 for (section_iterator si = o->begin_sections(), 421 se = o->end_sections(); 422 si != se; si.increment(ec)) { 423 if (error(ec)) return; 424 StringRef Name; 425 StringRef Contents; 426 uint64_t BaseAddr; 427 if (error(si->getName(Name))) continue; 428 if (error(si->getContents(Contents))) continue; 429 if (error(si->getAddress(BaseAddr))) continue; 430 431 outs() << "Contents of section " << Name << ":\n"; 432 433 // Dump out the content as hex and printable ascii characters. 434 for (std::size_t addr = 0, end = Contents.size(); addr < end; addr += 16) { 435 outs() << format(" %04" PRIx64 " ", BaseAddr + addr); 436 // Dump line of hex. 437 for (std::size_t i = 0; i < 16; ++i) { 438 if (i != 0 && i % 4 == 0) 439 outs() << ' '; 440 if (addr + i < end) 441 outs() << hexdigit((Contents[addr + i] >> 4) & 0xF, true) 442 << hexdigit(Contents[addr + i] & 0xF, true); 443 else 444 outs() << " "; 445 } 446 // Print ascii. 447 outs() << " "; 448 for (std::size_t i = 0; i < 16 && addr + i < end; ++i) { 449 if (std::isprint(Contents[addr + i] & 0xFF)) 450 outs() << Contents[addr + i]; 451 else 452 outs() << "."; 453 } 454 outs() << "\n"; 455 } 456 } 457 } 458 459 static void PrintCOFFSymbolTable(const COFFObjectFile *coff) { 460 const coff_file_header *header; 461 if (error(coff->getHeader(header))) return; 462 int aux_count = 0; 463 const coff_symbol *symbol = 0; 464 for (int i = 0, e = header->NumberOfSymbols; i != e; ++i) { 465 if (aux_count--) { 466 // Figure out which type of aux this is. 467 if (symbol->StorageClass == COFF::IMAGE_SYM_CLASS_STATIC 468 && symbol->Value == 0) { // Section definition. 469 const coff_aux_section_definition *asd; 470 if (error(coff->getAuxSymbol<coff_aux_section_definition>(i, asd))) 471 return; 472 outs() << "AUX " 473 << format("scnlen 0x%x nreloc %d nlnno %d checksum 0x%x " 474 , unsigned(asd->Length) 475 , unsigned(asd->NumberOfRelocations) 476 , unsigned(asd->NumberOfLinenumbers) 477 , unsigned(asd->CheckSum)) 478 << format("assoc %d comdat %d\n" 479 , unsigned(asd->Number) 480 , unsigned(asd->Selection)); 481 } else 482 outs() << "AUX Unknown\n"; 483 } else { 484 StringRef name; 485 if (error(coff->getSymbol(i, symbol))) return; 486 if (error(coff->getSymbolName(symbol, name))) return; 487 outs() << "[" << format("%2d", i) << "]" 488 << "(sec " << format("%2d", int(symbol->SectionNumber)) << ")" 489 << "(fl 0x00)" // Flag bits, which COFF doesn't have. 490 << "(ty " << format("%3x", unsigned(symbol->Type)) << ")" 491 << "(scl " << format("%3x", unsigned(symbol->StorageClass)) << ") " 492 << "(nx " << unsigned(symbol->NumberOfAuxSymbols) << ") " 493 << "0x" << format("%08x", unsigned(symbol->Value)) << " " 494 << name << "\n"; 495 aux_count = symbol->NumberOfAuxSymbols; 496 } 497 } 498 } 499 500 static void PrintSymbolTable(const ObjectFile *o) { 501 outs() << "SYMBOL TABLE:\n"; 502 503 if (const COFFObjectFile *coff = dyn_cast<const COFFObjectFile>(o)) 504 PrintCOFFSymbolTable(coff); 505 else { 506 error_code ec; 507 for (symbol_iterator si = o->begin_symbols(), 508 se = o->end_symbols(); si != se; si.increment(ec)) { 509 if (error(ec)) return; 510 StringRef Name; 511 uint64_t Address; 512 SymbolRef::Type Type; 513 uint64_t Size; 514 uint32_t Flags; 515 section_iterator Section = o->end_sections(); 516 if (error(si->getName(Name))) continue; 517 if (error(si->getAddress(Address))) continue; 518 if (error(si->getFlags(Flags))) continue; 519 if (error(si->getType(Type))) continue; 520 if (error(si->getSize(Size))) continue; 521 if (error(si->getSection(Section))) continue; 522 523 bool Global = Flags & SymbolRef::SF_Global; 524 bool Weak = Flags & SymbolRef::SF_Weak; 525 bool Absolute = Flags & SymbolRef::SF_Absolute; 526 527 if (Address == UnknownAddressOrSize) 528 Address = 0; 529 if (Size == UnknownAddressOrSize) 530 Size = 0; 531 char GlobLoc = ' '; 532 if (Type != SymbolRef::ST_Unknown) 533 GlobLoc = Global ? 'g' : 'l'; 534 char Debug = (Type == SymbolRef::ST_Debug || Type == SymbolRef::ST_File) 535 ? 'd' : ' '; 536 char FileFunc = ' '; 537 if (Type == SymbolRef::ST_File) 538 FileFunc = 'f'; 539 else if (Type == SymbolRef::ST_Function) 540 FileFunc = 'F'; 541 542 outs() << format("%08" PRIx64, Address) << " " 543 << GlobLoc // Local -> 'l', Global -> 'g', Neither -> ' ' 544 << (Weak ? 'w' : ' ') // Weak? 545 << ' ' // Constructor. Not supported yet. 546 << ' ' // Warning. Not supported yet. 547 << ' ' // Indirect reference to another symbol. 548 << Debug // Debugging (d) or dynamic (D) symbol. 549 << FileFunc // Name of function (F), file (f) or object (O). 550 << ' '; 551 if (Absolute) 552 outs() << "*ABS*"; 553 else if (Section == o->end_sections()) 554 outs() << "*UND*"; 555 else { 556 StringRef SectionName; 557 if (error(Section->getName(SectionName))) 558 SectionName = ""; 559 outs() << SectionName; 560 } 561 outs() << '\t' 562 << format("%08" PRIx64 " ", Size) 563 << Name 564 << '\n'; 565 } 566 } 567 } 568 569 static void DumpObject(const ObjectFile *o) { 570 outs() << '\n'; 571 outs() << o->getFileName() 572 << ":\tfile format " << o->getFileFormatName() << "\n\n"; 573 574 if (Disassemble) 575 DisassembleObject(o, Relocations); 576 if (Relocations && !Disassemble) 577 PrintRelocations(o); 578 if (SectionHeaders) 579 PrintSectionHeaders(o); 580 if (SectionContents) 581 PrintSectionContents(o); 582 if (SymbolTable) 583 PrintSymbolTable(o); 584 } 585 586 /// @brief Dump each object file in \a a; 587 static void DumpArchive(const Archive *a) { 588 for (Archive::child_iterator i = a->begin_children(), 589 e = a->end_children(); i != e; ++i) { 590 OwningPtr<Binary> child; 591 if (error_code ec = i->getAsBinary(child)) { 592 // Ignore non-object files. 593 if (ec != object_error::invalid_file_type) 594 errs() << ToolName << ": '" << a->getFileName() << "': " << ec.message() 595 << ".\n"; 596 continue; 597 } 598 if (ObjectFile *o = dyn_cast<ObjectFile>(child.get())) 599 DumpObject(o); 600 else 601 errs() << ToolName << ": '" << a->getFileName() << "': " 602 << "Unrecognized file type.\n"; 603 } 604 } 605 606 /// @brief Open file and figure out how to dump it. 607 static void DumpInput(StringRef file) { 608 // If file isn't stdin, check that it exists. 609 if (file != "-" && !sys::fs::exists(file)) { 610 errs() << ToolName << ": '" << file << "': " << "No such file\n"; 611 return; 612 } 613 614 if (MachO && Disassemble) { 615 DisassembleInputMachO(file); 616 return; 617 } 618 619 // Attempt to open the binary. 620 OwningPtr<Binary> binary; 621 if (error_code ec = createBinary(file, binary)) { 622 errs() << ToolName << ": '" << file << "': " << ec.message() << ".\n"; 623 return; 624 } 625 626 if (Archive *a = dyn_cast<Archive>(binary.get())) 627 DumpArchive(a); 628 else if (ObjectFile *o = dyn_cast<ObjectFile>(binary.get())) 629 DumpObject(o); 630 else 631 errs() << ToolName << ": '" << file << "': " << "Unrecognized file type.\n"; 632 } 633 634 int main(int argc, char **argv) { 635 // Print a stack trace if we signal out. 636 sys::PrintStackTraceOnErrorSignal(); 637 PrettyStackTraceProgram X(argc, argv); 638 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit. 639 640 // Initialize targets and assembly printers/parsers. 641 llvm::InitializeAllTargetInfos(); 642 llvm::InitializeAllTargetMCs(); 643 llvm::InitializeAllAsmParsers(); 644 llvm::InitializeAllDisassemblers(); 645 646 // Register the target printer for --version. 647 cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion); 648 649 cl::ParseCommandLineOptions(argc, argv, "llvm object file dumper\n"); 650 TripleName = Triple::normalize(TripleName); 651 652 ToolName = argv[0]; 653 654 // Defaults to a.out if no filenames specified. 655 if (InputFilenames.size() == 0) 656 InputFilenames.push_back("a.out"); 657 658 if (!Disassemble 659 && !Relocations 660 && !SectionHeaders 661 && !SectionContents 662 && !SymbolTable) { 663 cl::PrintHelpMessage(); 664 return 2; 665 } 666 667 std::for_each(InputFilenames.begin(), InputFilenames.end(), 668 DumpInput); 669 670 return 0; 671 } 672