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/MCContext.h" 27 #include "llvm/MC/MCDisassembler.h" 28 #include "llvm/MC/MCInst.h" 29 #include "llvm/MC/MCInstPrinter.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 <cstring> 51 using namespace llvm; 52 using namespace object; 53 54 static cl::list<std::string> 55 InputFilenames(cl::Positional, cl::desc("<input object files>"),cl::ZeroOrMore); 56 57 static cl::opt<bool> 58 Disassemble("disassemble", 59 cl::desc("Display assembler mnemonics for the machine instructions")); 60 static cl::alias 61 Disassembled("d", cl::desc("Alias for --disassemble"), 62 cl::aliasopt(Disassemble)); 63 64 static cl::opt<bool> 65 Relocations("r", cl::desc("Display the relocation entries in the file")); 66 67 static cl::opt<bool> 68 SectionContents("s", cl::desc("Display the content of each section")); 69 70 static cl::opt<bool> 71 SymbolTable("t", cl::desc("Display the symbol table")); 72 73 static cl::opt<bool> 74 MachO("macho", cl::desc("Use MachO specific object file parser")); 75 static cl::alias 76 MachOm("m", cl::desc("Alias for --macho"), cl::aliasopt(MachO)); 77 78 cl::opt<std::string> 79 llvm::TripleName("triple", cl::desc("Target triple to disassemble for, " 80 "see -version for available targets")); 81 82 cl::opt<std::string> 83 llvm::ArchName("arch", cl::desc("Target arch to disassemble for, " 84 "see -version for available targets")); 85 86 static cl::opt<bool> 87 SectionHeaders("section-headers", cl::desc("Display summaries of the headers " 88 "for each section.")); 89 static cl::alias 90 SectionHeadersShort("headers", cl::desc("Alias for --section-headers"), 91 cl::aliasopt(SectionHeaders)); 92 static cl::alias 93 SectionHeadersShorter("h", cl::desc("Alias for --section-headers"), 94 cl::aliasopt(SectionHeaders)); 95 96 static StringRef ToolName; 97 98 static bool error(error_code ec) { 99 if (!ec) return false; 100 101 outs() << ToolName << ": error reading file: " << ec.message() << ".\n"; 102 outs().flush(); 103 return true; 104 } 105 106 static const Target *GetTarget(const ObjectFile *Obj = NULL) { 107 // Figure out the target triple. 108 llvm::Triple TT("unknown-unknown-unknown"); 109 if (TripleName.empty()) { 110 if (Obj) 111 TT.setArch(Triple::ArchType(Obj->getArch())); 112 } else 113 TT.setTriple(Triple::normalize(TripleName)); 114 115 if (!ArchName.empty()) 116 TT.setArchName(ArchName); 117 118 TripleName = TT.str(); 119 120 // Get the target specific parser. 121 std::string Error; 122 const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error); 123 if (TheTarget) 124 return TheTarget; 125 126 errs() << ToolName << ": error: unable to get target for '" << TripleName 127 << "', see --version and --triple.\n"; 128 return 0; 129 } 130 131 void llvm::DumpBytes(StringRef bytes) { 132 static const char hex_rep[] = "0123456789abcdef"; 133 // FIXME: The real way to do this is to figure out the longest instruction 134 // and align to that size before printing. I'll fix this when I get 135 // around to outputting relocations. 136 // 15 is the longest x86 instruction 137 // 3 is for the hex rep of a byte + a space. 138 // 1 is for the null terminator. 139 enum { OutputSize = (15 * 3) + 1 }; 140 char output[OutputSize]; 141 142 assert(bytes.size() <= 15 143 && "DumpBytes only supports instructions of up to 15 bytes"); 144 memset(output, ' ', sizeof(output)); 145 unsigned index = 0; 146 for (StringRef::iterator i = bytes.begin(), 147 e = bytes.end(); i != e; ++i) { 148 output[index] = hex_rep[(*i & 0xF0) >> 4]; 149 output[index + 1] = hex_rep[*i & 0xF]; 150 index += 3; 151 } 152 153 output[sizeof(output) - 1] = 0; 154 outs() << output; 155 } 156 157 static bool RelocAddressLess(RelocationRef a, RelocationRef b) { 158 uint64_t a_addr, b_addr; 159 if (error(a.getAddress(a_addr))) return false; 160 if (error(b.getAddress(b_addr))) return false; 161 return a_addr < b_addr; 162 } 163 164 // OperandInfoCallback - Callback from the MCDisassembler to perform 165 // relocation resolution for operands while disassembling. 166 int OperandInfoCallback(void *ObjectFile, uint64_t PC, uint64_t Offset, 167 uint64_t Size, int TagType, void *TagBuf) { 168 LLVMOpInfo1 *OpInfo = static_cast<LLVMOpInfo1*>(TagBuf); 169 OpInfo->AddSymbol.Present = 0; 170 OpInfo->SubtractSymbol.Present = 0; 171 OpInfo->VariantKind = LLVMDisassembler_VariantKind_None; 172 173 return 0; 174 } 175 176 // SymbolLookupCallback - Callback from the MCDisassembler to convert 177 // offsets to symbolic references while disassembling. 178 const char* SymbolLookupCallback(void *ObjectFile, uint64_t ReferenceValue, 179 uint64_t *ReferenceType, uint64_t PC, 180 const char **ReferenceName) { 181 *ReferenceType = LLVMDisassembler_ReferenceType_InOut_None; 182 return 0; 183 } 184 185 static void DisassembleObject(const ObjectFile *Obj, bool InlineRelocs) { 186 const Target *TheTarget = GetTarget(Obj); 187 188 if (!TheTarget) { 189 // GetTarget prints out stuff. 190 return; 191 } 192 193 error_code ec; 194 for (section_iterator i = Obj->begin_sections(), 195 e = Obj->end_sections(); 196 i != e; i.increment(ec)) { 197 if (error(ec)) break; 198 bool text; 199 if (error(i->isText(text))) break; 200 if (!text) continue; 201 202 uint64_t SectionAddr; 203 if (error(i->getAddress(SectionAddr))) break; 204 205 // Make a list of all the symbols in this section. 206 std::vector<std::pair<uint64_t, StringRef> > Symbols; 207 for (symbol_iterator si = Obj->begin_symbols(), 208 se = Obj->end_symbols(); 209 si != se; si.increment(ec)) { 210 bool contains; 211 if (!error(i->containsSymbol(*si, contains)) && contains) { 212 uint64_t Address; 213 if (error(si->getOffset(Address))) break; 214 StringRef Name; 215 if (error(si->getName(Name))) break; 216 Symbols.push_back(std::make_pair(Address, Name)); 217 } 218 } 219 220 // Sort the symbols by address, just in case they didn't come in that way. 221 array_pod_sort(Symbols.begin(), Symbols.end()); 222 223 // Make a list of all the relocations for this section. 224 std::vector<RelocationRef> Rels; 225 if (InlineRelocs) { 226 for (relocation_iterator ri = i->begin_relocations(), 227 re = i->end_relocations(); 228 ri != re; ri.increment(ec)) { 229 if (error(ec)) break; 230 Rels.push_back(*ri); 231 } 232 } 233 234 // Sort relocations by address. 235 std::sort(Rels.begin(), Rels.end(), RelocAddressLess); 236 237 StringRef name; 238 if (error(i->getName(name))) break; 239 outs() << "Disassembly of section " << name << ':'; 240 241 // If the section has no symbols just insert a dummy one and disassemble 242 // the whole section. 243 if (Symbols.empty()) 244 Symbols.push_back(std::make_pair(0, name)); 245 246 // Set up disassembler. 247 OwningPtr<const MCAsmInfo> AsmInfo(TheTarget->createMCAsmInfo(TripleName)); 248 249 if (!AsmInfo) { 250 errs() << "error: no assembly info for target " << TripleName << "\n"; 251 return; 252 } 253 254 OwningPtr<const MCRegisterInfo> 255 RegInfo(TheTarget->createMCRegInfo(TripleName)); 256 257 if (!RegInfo) { 258 errs() << "error: no register info for target " << TripleName << "\n"; 259 return; 260 } 261 262 OwningPtr<const MCSubtargetInfo> STI( 263 TheTarget->createMCSubtargetInfo(TripleName, "", "")); 264 265 if (!STI) { 266 errs() << "error: no subtarget info for target " << TripleName << "\n"; 267 return; 268 } 269 270 MCContext Context(*AsmInfo, *RegInfo, 0); 271 OwningPtr<MCDisassembler> DisAsm( 272 TheTarget->createMCDisassembler(*STI)); 273 if (!DisAsm) { 274 errs() << "error: no disassembler for target " << TripleName << "\n"; 275 return; 276 } 277 278 // Setup the disassembler for symbolic decoding. 279 DisAsm->setupForSymbolicDisassembly(OperandInfoCallback, 280 SymbolLookupCallback, 281 const_cast<ObjectFile*>(Obj), 282 &Context); 283 284 int AsmPrinterVariant = AsmInfo->getAssemblerDialect(); 285 OwningPtr<MCInstPrinter> IP(TheTarget->createMCInstPrinter( 286 AsmPrinterVariant, *AsmInfo, *STI)); 287 if (!IP) { 288 errs() << "error: no instruction printer for target " << TripleName 289 << '\n'; 290 return; 291 } 292 293 StringRef Bytes; 294 if (error(i->getContents(Bytes))) break; 295 StringRefMemoryObject memoryObject(Bytes); 296 uint64_t Size; 297 uint64_t Index; 298 uint64_t SectSize; 299 if (error(i->getSize(SectSize))) break; 300 301 std::vector<RelocationRef>::const_iterator rel_cur = Rels.begin(); 302 std::vector<RelocationRef>::const_iterator rel_end = Rels.end(); 303 // Disassemble symbol by symbol. 304 for (unsigned si = 0, se = Symbols.size(); si != se; ++si) { 305 uint64_t Start = Symbols[si].first; 306 uint64_t End; 307 // The end is either the size of the section or the beginning of the next 308 // symbol. 309 if (si == se - 1) 310 End = SectSize; 311 // Make sure this symbol takes up space. 312 else if (Symbols[si + 1].first != Start) 313 End = Symbols[si + 1].first - 1; 314 else 315 // This symbol has the same address as the next symbol. Skip it. 316 continue; 317 318 outs() << '\n' << Symbols[si].second << ":\n"; 319 320 #ifndef NDEBUG 321 raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls(); 322 #else 323 raw_ostream &DebugOut = nulls(); 324 #endif 325 326 for (Index = Start; Index < End; Index += Size) { 327 MCInst Inst; 328 329 if (DisAsm->getInstruction(Inst, Size, memoryObject, Index, 330 DebugOut, nulls())) { 331 outs() << format("%8x:\t", SectionAddr + Index); 332 DumpBytes(StringRef(Bytes.data() + Index, Size)); 333 IP->printInst(&Inst, outs(), ""); 334 outs() << "\n"; 335 } else { 336 errs() << ToolName << ": warning: invalid instruction encoding\n"; 337 if (Size == 0) 338 Size = 1; // skip illegible bytes 339 } 340 341 // Print relocation for instruction. 342 while (rel_cur != rel_end) { 343 bool hidden = false; 344 uint64_t addr; 345 SmallString<16> name; 346 SmallString<32> val; 347 348 // If this relocation is hidden, skip it. 349 if (error(rel_cur->getHidden(hidden))) goto skip_print_rel; 350 if (hidden) goto skip_print_rel; 351 352 if (error(rel_cur->getAddress(addr))) goto skip_print_rel; 353 // Stop when rel_cur's address is past the current instruction. 354 if (addr >= Index + Size) break; 355 if (error(rel_cur->getTypeName(name))) goto skip_print_rel; 356 if (error(rel_cur->getValueString(val))) goto skip_print_rel; 357 358 outs() << format("\t\t\t%8x: ", SectionAddr + addr) << name << "\t" 359 << val << "\n"; 360 361 skip_print_rel: 362 ++rel_cur; 363 } 364 } 365 } 366 } 367 } 368 369 static void PrintRelocations(const ObjectFile *o) { 370 error_code ec; 371 for (section_iterator si = o->begin_sections(), se = o->end_sections(); 372 si != se; si.increment(ec)){ 373 if (error(ec)) return; 374 if (si->begin_relocations() == si->end_relocations()) 375 continue; 376 StringRef secname; 377 if (error(si->getName(secname))) continue; 378 outs() << "RELOCATION RECORDS FOR [" << secname << "]:\n"; 379 for (relocation_iterator ri = si->begin_relocations(), 380 re = si->end_relocations(); 381 ri != re; ri.increment(ec)) { 382 if (error(ec)) return; 383 384 bool hidden; 385 uint64_t address; 386 SmallString<32> relocname; 387 SmallString<32> valuestr; 388 if (error(ri->getHidden(hidden))) continue; 389 if (hidden) continue; 390 if (error(ri->getTypeName(relocname))) continue; 391 if (error(ri->getAddress(address))) continue; 392 if (error(ri->getValueString(valuestr))) continue; 393 outs() << address << " " << relocname << " " << valuestr << "\n"; 394 } 395 outs() << "\n"; 396 } 397 } 398 399 static void PrintSectionHeaders(const ObjectFile *o) { 400 outs() << "Sections:\n" 401 "Idx Name Size Address Type\n"; 402 error_code ec; 403 unsigned i = 0; 404 for (section_iterator si = o->begin_sections(), se = o->end_sections(); 405 si != se; si.increment(ec)) { 406 if (error(ec)) return; 407 StringRef Name; 408 if (error(si->getName(Name))) return; 409 uint64_t Address; 410 if (error(si->getAddress(Address))) return; 411 uint64_t Size; 412 if (error(si->getSize(Size))) return; 413 bool Text, Data, BSS; 414 if (error(si->isText(Text))) return; 415 if (error(si->isData(Data))) return; 416 if (error(si->isBSS(BSS))) return; 417 std::string Type = (std::string(Text ? "TEXT " : "") + 418 (Data ? "DATA " : "") + (BSS ? "BSS" : "")); 419 outs() << format("%3d %-13s %09"PRIx64" %017"PRIx64" %s\n", i, Name.str().c_str(), Size, 420 Address, Type.c_str()); 421 ++i; 422 } 423 } 424 425 static void PrintSectionContents(const ObjectFile *o) { 426 error_code ec; 427 for (section_iterator si = o->begin_sections(), 428 se = o->end_sections(); 429 si != se; si.increment(ec)) { 430 if (error(ec)) return; 431 StringRef Name; 432 StringRef Contents; 433 uint64_t BaseAddr; 434 if (error(si->getName(Name))) continue; 435 if (error(si->getContents(Contents))) continue; 436 if (error(si->getAddress(BaseAddr))) continue; 437 438 outs() << "Contents of section " << Name << ":\n"; 439 440 // Dump out the content as hex and printable ascii characters. 441 for (std::size_t addr = 0, end = Contents.size(); addr < end; addr += 16) { 442 outs() << format(" %04x ", BaseAddr + addr); 443 // Dump line of hex. 444 for (std::size_t i = 0; i < 16; ++i) { 445 if (i != 0 && i % 4 == 0) 446 outs() << ' '; 447 if (addr + i < end) 448 outs() << hexdigit((Contents[addr + i] >> 4) & 0xF, true) 449 << hexdigit(Contents[addr + i] & 0xF, true); 450 else 451 outs() << " "; 452 } 453 // Print ascii. 454 outs() << " "; 455 for (std::size_t i = 0; i < 16 && addr + i < end; ++i) { 456 if (std::isprint(Contents[addr + i] & 0xFF)) 457 outs() << Contents[addr + i]; 458 else 459 outs() << "."; 460 } 461 outs() << "\n"; 462 } 463 } 464 } 465 466 static void PrintCOFFSymbolTable(const COFFObjectFile *coff) { 467 const coff_file_header *header; 468 if (error(coff->getHeader(header))) return; 469 int aux_count = 0; 470 const coff_symbol *symbol = 0; 471 for (int i = 0, e = header->NumberOfSymbols; i != e; ++i) { 472 if (aux_count--) { 473 // Figure out which type of aux this is. 474 if (symbol->StorageClass == COFF::IMAGE_SYM_CLASS_STATIC 475 && symbol->Value == 0) { // Section definition. 476 const coff_aux_section_definition *asd; 477 if (error(coff->getAuxSymbol<coff_aux_section_definition>(i, asd))) 478 return; 479 outs() << "AUX " 480 << format("scnlen 0x%x nreloc %d nlnno %d checksum 0x%x " 481 , unsigned(asd->Length) 482 , unsigned(asd->NumberOfRelocations) 483 , unsigned(asd->NumberOfLinenumbers) 484 , unsigned(asd->CheckSum)) 485 << format("assoc %d comdat %d\n" 486 , unsigned(asd->Number) 487 , unsigned(asd->Selection)); 488 } else { 489 outs() << "AUX Unknown\n"; 490 } 491 } else { 492 StringRef name; 493 if (error(coff->getSymbol(i, symbol))) return; 494 if (error(coff->getSymbolName(symbol, name))) return; 495 outs() << "[" << format("%2d", i) << "]" 496 << "(sec " << format("%2d", int(symbol->SectionNumber)) << ")" 497 << "(fl 0x00)" // Flag bits, which COFF doesn't have. 498 << "(ty " << format("%3x", unsigned(symbol->Type)) << ")" 499 << "(scl " << format("%3x", unsigned(symbol->StorageClass)) << ") " 500 << "(nx " << unsigned(symbol->NumberOfAuxSymbols) << ") " 501 << "0x" << format("%08x", unsigned(symbol->Value)) << " " 502 << name << "\n"; 503 aux_count = symbol->NumberOfAuxSymbols; 504 } 505 } 506 } 507 508 static void PrintSymbolTable(const ObjectFile *o) { 509 outs() << "SYMBOL TABLE:\n"; 510 511 if (const COFFObjectFile *coff = dyn_cast<const COFFObjectFile>(o)) 512 PrintCOFFSymbolTable(coff); 513 else { 514 error_code ec; 515 for (symbol_iterator si = o->begin_symbols(), 516 se = o->end_symbols(); si != se; si.increment(ec)) { 517 if (error(ec)) return; 518 StringRef Name; 519 uint64_t Offset; 520 bool Global; 521 SymbolRef::Type Type; 522 bool Weak; 523 bool Absolute; 524 uint64_t Size; 525 section_iterator Section = o->end_sections(); 526 if (error(si->getName(Name))) continue; 527 if (error(si->getOffset(Offset))) continue; 528 if (error(si->isGlobal(Global))) continue; 529 if (error(si->getType(Type))) continue; 530 if (error(si->isWeak(Weak))) continue; 531 if (error(si->isAbsolute(Absolute))) continue; 532 if (error(si->getSize(Size))) continue; 533 if (error(si->getSection(Section))) continue; 534 535 if (Offset == UnknownAddressOrSize) 536 Offset = 0; 537 char GlobLoc = ' '; 538 if (Type != SymbolRef::ST_External) 539 GlobLoc = Global ? 'g' : 'l'; 540 char Debug = (Type == SymbolRef::ST_Debug || Type == SymbolRef::ST_File) 541 ? 'd' : ' '; 542 char FileFunc = ' '; 543 if (Type == SymbolRef::ST_File) 544 FileFunc = 'f'; 545 else if (Type == SymbolRef::ST_Function) 546 FileFunc = 'F'; 547 548 outs() << format("%08x", Offset) << " " 549 << GlobLoc // Local -> 'l', Global -> 'g', Neither -> ' ' 550 << (Weak ? 'w' : ' ') // Weak? 551 << ' ' // Constructor. Not supported yet. 552 << ' ' // Warning. Not supported yet. 553 << ' ' // Indirect reference to another symbol. 554 << Debug // Debugging (d) or dynamic (D) symbol. 555 << FileFunc // Name of function (F), file (f) or object (O). 556 << ' '; 557 if (Absolute) 558 outs() << "*ABS*"; 559 else if (Section == o->end_sections()) 560 outs() << "*UND*"; 561 else { 562 StringRef SectionName; 563 if (error(Section->getName(SectionName))) 564 SectionName = ""; 565 outs() << SectionName; 566 } 567 outs() << '\t' 568 << format("%08x ", Size) 569 << Name 570 << '\n'; 571 } 572 } 573 } 574 575 static void DumpObject(const ObjectFile *o) { 576 outs() << '\n'; 577 outs() << o->getFileName() 578 << ":\tfile format " << o->getFileFormatName() << "\n\n"; 579 580 if (Disassemble) 581 DisassembleObject(o, Relocations); 582 if (Relocations && !Disassemble) 583 PrintRelocations(o); 584 if (SectionHeaders) 585 PrintSectionHeaders(o); 586 if (SectionContents) 587 PrintSectionContents(o); 588 if (SymbolTable) 589 PrintSymbolTable(o); 590 } 591 592 /// @brief Dump each object file in \a a; 593 static void DumpArchive(const Archive *a) { 594 for (Archive::child_iterator i = a->begin_children(), 595 e = a->end_children(); i != e; ++i) { 596 OwningPtr<Binary> child; 597 if (error_code ec = i->getAsBinary(child)) { 598 errs() << ToolName << ": '" << a->getFileName() << "': " << ec.message() 599 << ".\n"; 600 continue; 601 } 602 if (ObjectFile *o = dyn_cast<ObjectFile>(child.get())) 603 DumpObject(o); 604 else 605 errs() << ToolName << ": '" << a->getFileName() << "': " 606 << "Unrecognized file type.\n"; 607 } 608 } 609 610 /// @brief Open file and figure out how to dump it. 611 static void DumpInput(StringRef file) { 612 // If file isn't stdin, check that it exists. 613 if (file != "-" && !sys::fs::exists(file)) { 614 errs() << ToolName << ": '" << file << "': " << "No such file\n"; 615 return; 616 } 617 618 if (MachO && Disassemble) { 619 DisassembleInputMachO(file); 620 return; 621 } 622 623 // Attempt to open the binary. 624 OwningPtr<Binary> binary; 625 if (error_code ec = createBinary(file, binary)) { 626 errs() << ToolName << ": '" << file << "': " << ec.message() << ".\n"; 627 return; 628 } 629 630 if (Archive *a = dyn_cast<Archive>(binary.get())) { 631 DumpArchive(a); 632 } else if (ObjectFile *o = dyn_cast<ObjectFile>(binary.get())) { 633 DumpObject(o); 634 } else { 635 errs() << ToolName << ": '" << file << "': " << "Unrecognized file type.\n"; 636 } 637 } 638 639 int main(int argc, char **argv) { 640 // Print a stack trace if we signal out. 641 sys::PrintStackTraceOnErrorSignal(); 642 PrettyStackTraceProgram X(argc, argv); 643 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit. 644 645 // Initialize targets and assembly printers/parsers. 646 llvm::InitializeAllTargetInfos(); 647 llvm::InitializeAllTargetMCs(); 648 llvm::InitializeAllAsmParsers(); 649 llvm::InitializeAllDisassemblers(); 650 651 cl::ParseCommandLineOptions(argc, argv, "llvm object file dumper\n"); 652 TripleName = Triple::normalize(TripleName); 653 654 ToolName = argv[0]; 655 656 // Defaults to a.out if no filenames specified. 657 if (InputFilenames.size() == 0) 658 InputFilenames.push_back("a.out"); 659 660 if (!Disassemble 661 && !Relocations 662 && !SectionHeaders 663 && !SectionContents 664 && !SymbolTable) { 665 cl::PrintHelpMessage(); 666 return 2; 667 } 668 669 std::for_each(InputFilenames.begin(), InputFilenames.end(), 670 DumpInput); 671 672 return 0; 673 } 674