1 //===- llvm-cxxdump.cpp - Dump C++ data in an Object File -------*- 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 // Dumps C++ data resident in object files and archives. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm-cxxdump.h" 15 #include "Error.h" 16 #include "llvm/ADT/ArrayRef.h" 17 #include "llvm/Object/Archive.h" 18 #include "llvm/Object/ObjectFile.h" 19 #include "llvm/Object/SymbolSize.h" 20 #include "llvm/Support/Debug.h" 21 #include "llvm/Support/Endian.h" 22 #include "llvm/Support/FileSystem.h" 23 #include "llvm/Support/ManagedStatic.h" 24 #include "llvm/Support/PrettyStackTrace.h" 25 #include "llvm/Support/Signals.h" 26 #include "llvm/Support/TargetRegistry.h" 27 #include "llvm/Support/TargetSelect.h" 28 #include "llvm/Support/raw_ostream.h" 29 #include <map> 30 #include <string> 31 #include <system_error> 32 33 using namespace llvm; 34 using namespace llvm::object; 35 using namespace llvm::support; 36 37 namespace opts { 38 cl::list<std::string> InputFilenames(cl::Positional, 39 cl::desc("<input object files>"), 40 cl::ZeroOrMore); 41 } // namespace opts 42 43 static int ReturnValue = EXIT_SUCCESS; 44 45 namespace llvm { 46 47 static bool error(std::error_code EC) { 48 if (!EC) 49 return false; 50 51 ReturnValue = EXIT_FAILURE; 52 outs() << "\nError reading file: " << EC.message() << ".\n"; 53 outs().flush(); 54 return true; 55 } 56 57 } // namespace llvm 58 59 static void reportError(StringRef Input, StringRef Message) { 60 if (Input == "-") 61 Input = "<stdin>"; 62 63 errs() << Input << ": " << Message << "\n"; 64 errs().flush(); 65 ReturnValue = EXIT_FAILURE; 66 } 67 68 static void reportError(StringRef Input, std::error_code EC) { 69 reportError(Input, EC.message()); 70 } 71 72 static SmallVectorImpl<SectionRef> &getRelocSections(const ObjectFile *Obj, 73 const SectionRef &Sec) { 74 static bool MappingDone = false; 75 static std::map<SectionRef, SmallVector<SectionRef, 1>> SectionRelocMap; 76 if (!MappingDone) { 77 for (const SectionRef &Section : Obj->sections()) { 78 section_iterator Sec2 = Section.getRelocatedSection(); 79 if (Sec2 != Obj->section_end()) 80 SectionRelocMap[*Sec2].push_back(Section); 81 } 82 MappingDone = true; 83 } 84 return SectionRelocMap[Sec]; 85 } 86 87 static bool collectRelocatedSymbols(const ObjectFile *Obj, 88 const SectionRef &Sec, uint64_t SecAddress, 89 uint64_t SymAddress, uint64_t SymSize, 90 StringRef *I, StringRef *E) { 91 uint64_t SymOffset = SymAddress - SecAddress; 92 uint64_t SymEnd = SymOffset + SymSize; 93 for (const SectionRef &SR : getRelocSections(Obj, Sec)) { 94 for (const object::RelocationRef &Reloc : SR.relocations()) { 95 if (I == E) 96 break; 97 const object::symbol_iterator RelocSymI = Reloc.getSymbol(); 98 if (RelocSymI == Obj->symbol_end()) 99 continue; 100 StringRef RelocSymName; 101 if (error(RelocSymI->getName(RelocSymName))) 102 return true; 103 uint64_t Offset = Reloc.getOffset(); 104 if (Offset >= SymOffset && Offset < SymEnd) { 105 *I = RelocSymName; 106 ++I; 107 } 108 } 109 } 110 return false; 111 } 112 113 static bool collectRelocationOffsets( 114 const ObjectFile *Obj, const SectionRef &Sec, uint64_t SecAddress, 115 uint64_t SymAddress, uint64_t SymSize, StringRef SymName, 116 std::map<std::pair<StringRef, uint64_t>, StringRef> &Collection) { 117 uint64_t SymOffset = SymAddress - SecAddress; 118 uint64_t SymEnd = SymOffset + SymSize; 119 for (const SectionRef &SR : getRelocSections(Obj, Sec)) { 120 for (const object::RelocationRef &Reloc : SR.relocations()) { 121 const object::symbol_iterator RelocSymI = Reloc.getSymbol(); 122 if (RelocSymI == Obj->symbol_end()) 123 continue; 124 StringRef RelocSymName; 125 if (error(RelocSymI->getName(RelocSymName))) 126 return true; 127 uint64_t Offset = Reloc.getOffset(); 128 if (Offset >= SymOffset && Offset < SymEnd) 129 Collection[std::make_pair(SymName, Offset - SymOffset)] = RelocSymName; 130 } 131 } 132 return false; 133 } 134 135 static void dumpCXXData(const ObjectFile *Obj) { 136 struct CompleteObjectLocator { 137 StringRef Symbols[2]; 138 ArrayRef<little32_t> Data; 139 }; 140 struct ClassHierarchyDescriptor { 141 StringRef Symbols[1]; 142 ArrayRef<little32_t> Data; 143 }; 144 struct BaseClassDescriptor { 145 StringRef Symbols[2]; 146 ArrayRef<little32_t> Data; 147 }; 148 struct TypeDescriptor { 149 StringRef Symbols[1]; 150 uint64_t AlwaysZero; 151 StringRef MangledName; 152 }; 153 struct ThrowInfo { 154 uint32_t Flags; 155 }; 156 struct CatchableTypeArray { 157 uint32_t NumEntries; 158 }; 159 struct CatchableType { 160 uint32_t Flags; 161 uint32_t NonVirtualBaseAdjustmentOffset; 162 int32_t VirtualBasePointerOffset; 163 uint32_t VirtualBaseAdjustmentOffset; 164 uint32_t Size; 165 StringRef Symbols[2]; 166 }; 167 std::map<std::pair<StringRef, uint64_t>, StringRef> VFTableEntries; 168 std::map<std::pair<StringRef, uint64_t>, StringRef> TIEntries; 169 std::map<std::pair<StringRef, uint64_t>, StringRef> CTAEntries; 170 std::map<StringRef, ArrayRef<little32_t>> VBTables; 171 std::map<StringRef, CompleteObjectLocator> COLs; 172 std::map<StringRef, ClassHierarchyDescriptor> CHDs; 173 std::map<std::pair<StringRef, uint64_t>, StringRef> BCAEntries; 174 std::map<StringRef, BaseClassDescriptor> BCDs; 175 std::map<StringRef, TypeDescriptor> TDs; 176 std::map<StringRef, ThrowInfo> TIs; 177 std::map<StringRef, CatchableTypeArray> CTAs; 178 std::map<StringRef, CatchableType> CTs; 179 180 std::map<std::pair<StringRef, uint64_t>, StringRef> VTableSymEntries; 181 std::map<std::pair<StringRef, uint64_t>, int64_t> VTableDataEntries; 182 std::map<std::pair<StringRef, uint64_t>, StringRef> VTTEntries; 183 std::map<StringRef, StringRef> TINames; 184 185 uint8_t BytesInAddress = Obj->getBytesInAddress(); 186 187 std::vector<std::pair<SymbolRef, uint64_t>> SymAddr = 188 object::computeSymbolSizes(*Obj); 189 190 for (auto &P : SymAddr) { 191 object::SymbolRef Sym = P.first; 192 uint64_t SymSize = P.second; 193 StringRef SymName; 194 if (error(Sym.getName(SymName))) 195 return; 196 object::section_iterator SecI(Obj->section_begin()); 197 if (error(Sym.getSection(SecI))) 198 return; 199 // Skip external symbols. 200 if (SecI == Obj->section_end()) 201 continue; 202 const SectionRef &Sec = *SecI; 203 // Skip virtual or BSS sections. 204 if (Sec.isBSS() || Sec.isVirtual()) 205 continue; 206 StringRef SecContents; 207 if (error(Sec.getContents(SecContents))) 208 return; 209 uint64_t SymAddress; 210 if (error(Sym.getAddress(SymAddress))) 211 return; 212 uint64_t SecAddress = Sec.getAddress(); 213 uint64_t SecSize = Sec.getSize(); 214 uint64_t SymOffset = SymAddress - SecAddress; 215 StringRef SymContents = SecContents.substr(SymOffset, SymSize); 216 217 // VFTables in the MS-ABI start with '??_7' and are contained within their 218 // own COMDAT section. We then determine the contents of the VFTable by 219 // looking at each relocation in the section. 220 if (SymName.startswith("??_7")) { 221 // Each relocation either names a virtual method or a thunk. We note the 222 // offset into the section and the symbol used for the relocation. 223 collectRelocationOffsets(Obj, Sec, SecAddress, SecAddress, SecSize, 224 SymName, VFTableEntries); 225 } 226 // VBTables in the MS-ABI start with '??_8' and are filled with 32-bit 227 // offsets of virtual bases. 228 else if (SymName.startswith("??_8")) { 229 ArrayRef<little32_t> VBTableData( 230 reinterpret_cast<const little32_t *>(SymContents.data()), 231 SymContents.size() / sizeof(little32_t)); 232 VBTables[SymName] = VBTableData; 233 } 234 // Complete object locators in the MS-ABI start with '??_R4' 235 else if (SymName.startswith("??_R4")) { 236 CompleteObjectLocator COL; 237 COL.Data = ArrayRef<little32_t>( 238 reinterpret_cast<const little32_t *>(SymContents.data()), 3); 239 StringRef *I = std::begin(COL.Symbols), *E = std::end(COL.Symbols); 240 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 241 E)) 242 return; 243 COLs[SymName] = COL; 244 } 245 // Class hierarchy descriptors in the MS-ABI start with '??_R3' 246 else if (SymName.startswith("??_R3")) { 247 ClassHierarchyDescriptor CHD; 248 CHD.Data = ArrayRef<little32_t>( 249 reinterpret_cast<const little32_t *>(SymContents.data()), 3); 250 StringRef *I = std::begin(CHD.Symbols), *E = std::end(CHD.Symbols); 251 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 252 E)) 253 return; 254 CHDs[SymName] = CHD; 255 } 256 // Class hierarchy descriptors in the MS-ABI start with '??_R2' 257 else if (SymName.startswith("??_R2")) { 258 // Each relocation names a base class descriptor. We note the offset into 259 // the section and the symbol used for the relocation. 260 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 261 SymName, BCAEntries); 262 } 263 // Base class descriptors in the MS-ABI start with '??_R1' 264 else if (SymName.startswith("??_R1")) { 265 BaseClassDescriptor BCD; 266 BCD.Data = ArrayRef<little32_t>( 267 reinterpret_cast<const little32_t *>(SymContents.data()) + 1, 5); 268 StringRef *I = std::begin(BCD.Symbols), *E = std::end(BCD.Symbols); 269 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 270 E)) 271 return; 272 BCDs[SymName] = BCD; 273 } 274 // Type descriptors in the MS-ABI start with '??_R0' 275 else if (SymName.startswith("??_R0")) { 276 const char *DataPtr = SymContents.drop_front(BytesInAddress).data(); 277 TypeDescriptor TD; 278 if (BytesInAddress == 8) 279 TD.AlwaysZero = *reinterpret_cast<const little64_t *>(DataPtr); 280 else 281 TD.AlwaysZero = *reinterpret_cast<const little32_t *>(DataPtr); 282 TD.MangledName = SymContents.drop_front(BytesInAddress * 2); 283 StringRef *I = std::begin(TD.Symbols), *E = std::end(TD.Symbols); 284 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 285 E)) 286 return; 287 TDs[SymName] = TD; 288 } 289 // Throw descriptors in the MS-ABI start with '_TI' 290 else if (SymName.startswith("_TI") || SymName.startswith("__TI")) { 291 ThrowInfo TI; 292 TI.Flags = *reinterpret_cast<const little32_t *>(SymContents.data()); 293 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 294 SymName, TIEntries); 295 TIs[SymName] = TI; 296 } 297 // Catchable type arrays in the MS-ABI start with _CTA or __CTA. 298 else if (SymName.startswith("_CTA") || SymName.startswith("__CTA")) { 299 CatchableTypeArray CTA; 300 CTA.NumEntries = 301 *reinterpret_cast<const little32_t *>(SymContents.data()); 302 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 303 SymName, CTAEntries); 304 CTAs[SymName] = CTA; 305 } 306 // Catchable types in the MS-ABI start with _CT or __CT. 307 else if (SymName.startswith("_CT") || SymName.startswith("__CT")) { 308 const little32_t *DataPtr = 309 reinterpret_cast<const little32_t *>(SymContents.data()); 310 CatchableType CT; 311 CT.Flags = DataPtr[0]; 312 CT.NonVirtualBaseAdjustmentOffset = DataPtr[2]; 313 CT.VirtualBasePointerOffset = DataPtr[3]; 314 CT.VirtualBaseAdjustmentOffset = DataPtr[4]; 315 CT.Size = DataPtr[5]; 316 StringRef *I = std::begin(CT.Symbols), *E = std::end(CT.Symbols); 317 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 318 E)) 319 return; 320 CTs[SymName] = CT; 321 } 322 // Construction vtables in the Itanium ABI start with '_ZTT' or '__ZTT'. 323 else if (SymName.startswith("_ZTT") || SymName.startswith("__ZTT")) { 324 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 325 SymName, VTTEntries); 326 } 327 // Typeinfo names in the Itanium ABI start with '_ZTS' or '__ZTS'. 328 else if (SymName.startswith("_ZTS") || SymName.startswith("__ZTS")) { 329 TINames[SymName] = SymContents.slice(0, SymContents.find('\0')); 330 } 331 // Vtables in the Itanium ABI start with '_ZTV' or '__ZTV'. 332 else if (SymName.startswith("_ZTV") || SymName.startswith("__ZTV")) { 333 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 334 SymName, VTableSymEntries); 335 for (uint64_t SymOffI = 0; SymOffI < SymSize; SymOffI += BytesInAddress) { 336 auto Key = std::make_pair(SymName, SymOffI); 337 if (VTableSymEntries.count(Key)) 338 continue; 339 const char *DataPtr = 340 SymContents.substr(SymOffI, BytesInAddress).data(); 341 int64_t VData; 342 if (BytesInAddress == 8) 343 VData = *reinterpret_cast<const little64_t *>(DataPtr); 344 else 345 VData = *reinterpret_cast<const little32_t *>(DataPtr); 346 VTableDataEntries[Key] = VData; 347 } 348 } 349 // Typeinfo structures in the Itanium ABI start with '_ZTI' or '__ZTI'. 350 else if (SymName.startswith("_ZTI") || SymName.startswith("__ZTI")) { 351 // FIXME: Do something with these! 352 } 353 } 354 for (const auto &VFTableEntry : VFTableEntries) { 355 StringRef VFTableName = VFTableEntry.first.first; 356 uint64_t Offset = VFTableEntry.first.second; 357 StringRef SymName = VFTableEntry.second; 358 outs() << VFTableName << '[' << Offset << "]: " << SymName << '\n'; 359 } 360 for (const auto &VBTable : VBTables) { 361 StringRef VBTableName = VBTable.first; 362 uint32_t Idx = 0; 363 for (little32_t Offset : VBTable.second) { 364 outs() << VBTableName << '[' << Idx << "]: " << Offset << '\n'; 365 Idx += sizeof(Offset); 366 } 367 } 368 for (const auto &COLPair : COLs) { 369 StringRef COLName = COLPair.first; 370 const CompleteObjectLocator &COL = COLPair.second; 371 outs() << COLName << "[IsImageRelative]: " << COL.Data[0] << '\n'; 372 outs() << COLName << "[OffsetToTop]: " << COL.Data[1] << '\n'; 373 outs() << COLName << "[VFPtrOffset]: " << COL.Data[2] << '\n'; 374 outs() << COLName << "[TypeDescriptor]: " << COL.Symbols[0] << '\n'; 375 outs() << COLName << "[ClassHierarchyDescriptor]: " << COL.Symbols[1] 376 << '\n'; 377 } 378 for (const auto &CHDPair : CHDs) { 379 StringRef CHDName = CHDPair.first; 380 const ClassHierarchyDescriptor &CHD = CHDPair.second; 381 outs() << CHDName << "[AlwaysZero]: " << CHD.Data[0] << '\n'; 382 outs() << CHDName << "[Flags]: " << CHD.Data[1] << '\n'; 383 outs() << CHDName << "[NumClasses]: " << CHD.Data[2] << '\n'; 384 outs() << CHDName << "[BaseClassArray]: " << CHD.Symbols[0] << '\n'; 385 } 386 for (const auto &BCAEntry : BCAEntries) { 387 StringRef BCAName = BCAEntry.first.first; 388 uint64_t Offset = BCAEntry.first.second; 389 StringRef SymName = BCAEntry.second; 390 outs() << BCAName << '[' << Offset << "]: " << SymName << '\n'; 391 } 392 for (const auto &BCDPair : BCDs) { 393 StringRef BCDName = BCDPair.first; 394 const BaseClassDescriptor &BCD = BCDPair.second; 395 outs() << BCDName << "[TypeDescriptor]: " << BCD.Symbols[0] << '\n'; 396 outs() << BCDName << "[NumBases]: " << BCD.Data[0] << '\n'; 397 outs() << BCDName << "[OffsetInVBase]: " << BCD.Data[1] << '\n'; 398 outs() << BCDName << "[VBPtrOffset]: " << BCD.Data[2] << '\n'; 399 outs() << BCDName << "[OffsetInVBTable]: " << BCD.Data[3] << '\n'; 400 outs() << BCDName << "[Flags]: " << BCD.Data[4] << '\n'; 401 outs() << BCDName << "[ClassHierarchyDescriptor]: " << BCD.Symbols[1] 402 << '\n'; 403 } 404 for (const auto &TDPair : TDs) { 405 StringRef TDName = TDPair.first; 406 const TypeDescriptor &TD = TDPair.second; 407 outs() << TDName << "[VFPtr]: " << TD.Symbols[0] << '\n'; 408 outs() << TDName << "[AlwaysZero]: " << TD.AlwaysZero << '\n'; 409 outs() << TDName << "[MangledName]: "; 410 outs().write_escaped(TD.MangledName.rtrim(StringRef("\0", 1)), 411 /*UseHexEscapes=*/true) 412 << '\n'; 413 } 414 for (const auto &TIPair : TIs) { 415 StringRef TIName = TIPair.first; 416 const ThrowInfo &TI = TIPair.second; 417 auto dumpThrowInfoFlag = [&](const char *Name, uint32_t Flag) { 418 outs() << TIName << "[Flags." << Name 419 << "]: " << (TI.Flags & Flag ? "true" : "false") << '\n'; 420 }; 421 auto dumpThrowInfoSymbol = [&](const char *Name, int Offset) { 422 outs() << TIName << '[' << Name << "]: "; 423 auto Entry = TIEntries.find(std::make_pair(TIName, Offset)); 424 outs() << (Entry == TIEntries.end() ? "null" : Entry->second) << '\n'; 425 }; 426 outs() << TIName << "[Flags]: " << TI.Flags << '\n'; 427 dumpThrowInfoFlag("Const", 1); 428 dumpThrowInfoFlag("Volatile", 2); 429 dumpThrowInfoSymbol("CleanupFn", 4); 430 dumpThrowInfoSymbol("ForwardCompat", 8); 431 dumpThrowInfoSymbol("CatchableTypeArray", 12); 432 } 433 for (const auto &CTAPair : CTAs) { 434 StringRef CTAName = CTAPair.first; 435 const CatchableTypeArray &CTA = CTAPair.second; 436 437 outs() << CTAName << "[NumEntries]: " << CTA.NumEntries << '\n'; 438 439 unsigned Idx = 0; 440 for (auto I = CTAEntries.lower_bound(std::make_pair(CTAName, 0)), 441 E = CTAEntries.upper_bound(std::make_pair(CTAName, UINT64_MAX)); 442 I != E; ++I) 443 outs() << CTAName << '[' << Idx++ << "]: " << I->second << '\n'; 444 } 445 for (const auto &CTPair : CTs) { 446 StringRef CTName = CTPair.first; 447 const CatchableType &CT = CTPair.second; 448 auto dumpCatchableTypeFlag = [&](const char *Name, uint32_t Flag) { 449 outs() << CTName << "[Flags." << Name 450 << "]: " << (CT.Flags & Flag ? "true" : "false") << '\n'; 451 }; 452 outs() << CTName << "[Flags]: " << CT.Flags << '\n'; 453 dumpCatchableTypeFlag("ScalarType", 1); 454 dumpCatchableTypeFlag("VirtualInheritance", 4); 455 outs() << CTName << "[TypeDescriptor]: " << CT.Symbols[0] << '\n'; 456 outs() << CTName << "[NonVirtualBaseAdjustmentOffset]: " 457 << CT.NonVirtualBaseAdjustmentOffset << '\n'; 458 outs() << CTName 459 << "[VirtualBasePointerOffset]: " << CT.VirtualBasePointerOffset 460 << '\n'; 461 outs() << CTName << "[VirtualBaseAdjustmentOffset]: " 462 << CT.VirtualBaseAdjustmentOffset << '\n'; 463 outs() << CTName << "[Size]: " << CT.Size << '\n'; 464 outs() << CTName 465 << "[CopyCtor]: " << (CT.Symbols[1].empty() ? "null" : CT.Symbols[1]) 466 << '\n'; 467 } 468 for (const auto &VTTPair : VTTEntries) { 469 StringRef VTTName = VTTPair.first.first; 470 uint64_t VTTOffset = VTTPair.first.second; 471 StringRef VTTEntry = VTTPair.second; 472 outs() << VTTName << '[' << VTTOffset << "]: " << VTTEntry << '\n'; 473 } 474 for (const auto &TIPair : TINames) { 475 StringRef TIName = TIPair.first; 476 outs() << TIName << ": " << TIPair.second << '\n'; 477 } 478 auto VTableSymI = VTableSymEntries.begin(); 479 auto VTableSymE = VTableSymEntries.end(); 480 auto VTableDataI = VTableDataEntries.begin(); 481 auto VTableDataE = VTableDataEntries.end(); 482 for (;;) { 483 bool SymDone = VTableSymI == VTableSymE; 484 bool DataDone = VTableDataI == VTableDataE; 485 if (SymDone && DataDone) 486 break; 487 if (!SymDone && (DataDone || VTableSymI->first < VTableDataI->first)) { 488 StringRef VTableName = VTableSymI->first.first; 489 uint64_t Offset = VTableSymI->first.second; 490 StringRef VTableEntry = VTableSymI->second; 491 outs() << VTableName << '[' << Offset << "]: "; 492 outs() << VTableEntry; 493 outs() << '\n'; 494 ++VTableSymI; 495 continue; 496 } 497 if (!DataDone && (SymDone || VTableDataI->first < VTableSymI->first)) { 498 StringRef VTableName = VTableDataI->first.first; 499 uint64_t Offset = VTableDataI->first.second; 500 int64_t VTableEntry = VTableDataI->second; 501 outs() << VTableName << '[' << Offset << "]: "; 502 outs() << VTableEntry; 503 outs() << '\n'; 504 ++VTableDataI; 505 continue; 506 } 507 } 508 } 509 510 static void dumpArchive(const Archive *Arc) { 511 for (const Archive::Child &ArcC : Arc->children()) { 512 ErrorOr<std::unique_ptr<Binary>> ChildOrErr = ArcC.getAsBinary(); 513 if (std::error_code EC = ChildOrErr.getError()) { 514 // Ignore non-object files. 515 if (EC != object_error::invalid_file_type) 516 reportError(Arc->getFileName(), EC.message()); 517 continue; 518 } 519 520 if (ObjectFile *Obj = dyn_cast<ObjectFile>(&*ChildOrErr.get())) 521 dumpCXXData(Obj); 522 else 523 reportError(Arc->getFileName(), cxxdump_error::unrecognized_file_format); 524 } 525 } 526 527 static void dumpInput(StringRef File) { 528 // If file isn't stdin, check that it exists. 529 if (File != "-" && !sys::fs::exists(File)) { 530 reportError(File, cxxdump_error::file_not_found); 531 return; 532 } 533 534 // Attempt to open the binary. 535 ErrorOr<OwningBinary<Binary>> BinaryOrErr = createBinary(File); 536 if (std::error_code EC = BinaryOrErr.getError()) { 537 reportError(File, EC); 538 return; 539 } 540 Binary &Binary = *BinaryOrErr.get().getBinary(); 541 542 if (Archive *Arc = dyn_cast<Archive>(&Binary)) 543 dumpArchive(Arc); 544 else if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary)) 545 dumpCXXData(Obj); 546 else 547 reportError(File, cxxdump_error::unrecognized_file_format); 548 } 549 550 int main(int argc, const char *argv[]) { 551 sys::PrintStackTraceOnErrorSignal(); 552 PrettyStackTraceProgram X(argc, argv); 553 llvm_shutdown_obj Y; 554 555 // Initialize targets. 556 llvm::InitializeAllTargetInfos(); 557 558 // Register the target printer for --version. 559 cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion); 560 561 cl::ParseCommandLineOptions(argc, argv, "LLVM C++ ABI Data Dumper\n"); 562 563 // Default to stdin if no filename is specified. 564 if (opts::InputFilenames.size() == 0) 565 opts::InputFilenames.push_back("-"); 566 567 std::for_each(opts::InputFilenames.begin(), opts::InputFilenames.end(), 568 dumpInput); 569 570 return ReturnValue; 571 } 572