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 ErrorOr<StringRef> RelocSymName = RelocSymI->getName(); 101 if (error(RelocSymName.getError())) 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 ErrorOr<StringRef> RelocSymName = RelocSymI->getName(); 125 if (error(RelocSymName.getError())) 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 ErrorOr<StringRef> SymNameOrErr = Sym.getName(); 194 if (error(SymNameOrErr.getError())) 195 return; 196 StringRef SymName = *SymNameOrErr; 197 object::section_iterator SecI(Obj->section_begin()); 198 if (error(Sym.getSection(SecI))) 199 return; 200 // Skip external symbols. 201 if (SecI == Obj->section_end()) 202 continue; 203 const SectionRef &Sec = *SecI; 204 // Skip virtual or BSS sections. 205 if (Sec.isBSS() || Sec.isVirtual()) 206 continue; 207 StringRef SecContents; 208 if (error(Sec.getContents(SecContents))) 209 return; 210 uint64_t SymAddress; 211 if (error(Sym.getAddress(SymAddress))) 212 return; 213 uint64_t SecAddress = Sec.getAddress(); 214 uint64_t SecSize = Sec.getSize(); 215 uint64_t SymOffset = SymAddress - SecAddress; 216 StringRef SymContents = SecContents.substr(SymOffset, SymSize); 217 218 // VFTables in the MS-ABI start with '??_7' and are contained within their 219 // own COMDAT section. We then determine the contents of the VFTable by 220 // looking at each relocation in the section. 221 if (SymName.startswith("??_7")) { 222 // Each relocation either names a virtual method or a thunk. We note the 223 // offset into the section and the symbol used for the relocation. 224 collectRelocationOffsets(Obj, Sec, SecAddress, SecAddress, SecSize, 225 SymName, VFTableEntries); 226 } 227 // VBTables in the MS-ABI start with '??_8' and are filled with 32-bit 228 // offsets of virtual bases. 229 else if (SymName.startswith("??_8")) { 230 ArrayRef<little32_t> VBTableData( 231 reinterpret_cast<const little32_t *>(SymContents.data()), 232 SymContents.size() / sizeof(little32_t)); 233 VBTables[SymName] = VBTableData; 234 } 235 // Complete object locators in the MS-ABI start with '??_R4' 236 else if (SymName.startswith("??_R4")) { 237 CompleteObjectLocator COL; 238 COL.Data = ArrayRef<little32_t>( 239 reinterpret_cast<const little32_t *>(SymContents.data()), 3); 240 StringRef *I = std::begin(COL.Symbols), *E = std::end(COL.Symbols); 241 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 242 E)) 243 return; 244 COLs[SymName] = COL; 245 } 246 // Class hierarchy descriptors in the MS-ABI start with '??_R3' 247 else if (SymName.startswith("??_R3")) { 248 ClassHierarchyDescriptor CHD; 249 CHD.Data = ArrayRef<little32_t>( 250 reinterpret_cast<const little32_t *>(SymContents.data()), 3); 251 StringRef *I = std::begin(CHD.Symbols), *E = std::end(CHD.Symbols); 252 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 253 E)) 254 return; 255 CHDs[SymName] = CHD; 256 } 257 // Class hierarchy descriptors in the MS-ABI start with '??_R2' 258 else if (SymName.startswith("??_R2")) { 259 // Each relocation names a base class descriptor. We note the offset into 260 // the section and the symbol used for the relocation. 261 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 262 SymName, BCAEntries); 263 } 264 // Base class descriptors in the MS-ABI start with '??_R1' 265 else if (SymName.startswith("??_R1")) { 266 BaseClassDescriptor BCD; 267 BCD.Data = ArrayRef<little32_t>( 268 reinterpret_cast<const little32_t *>(SymContents.data()) + 1, 5); 269 StringRef *I = std::begin(BCD.Symbols), *E = std::end(BCD.Symbols); 270 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 271 E)) 272 return; 273 BCDs[SymName] = BCD; 274 } 275 // Type descriptors in the MS-ABI start with '??_R0' 276 else if (SymName.startswith("??_R0")) { 277 const char *DataPtr = SymContents.drop_front(BytesInAddress).data(); 278 TypeDescriptor TD; 279 if (BytesInAddress == 8) 280 TD.AlwaysZero = *reinterpret_cast<const little64_t *>(DataPtr); 281 else 282 TD.AlwaysZero = *reinterpret_cast<const little32_t *>(DataPtr); 283 TD.MangledName = SymContents.drop_front(BytesInAddress * 2); 284 StringRef *I = std::begin(TD.Symbols), *E = std::end(TD.Symbols); 285 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 286 E)) 287 return; 288 TDs[SymName] = TD; 289 } 290 // Throw descriptors in the MS-ABI start with '_TI' 291 else if (SymName.startswith("_TI") || SymName.startswith("__TI")) { 292 ThrowInfo TI; 293 TI.Flags = *reinterpret_cast<const little32_t *>(SymContents.data()); 294 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 295 SymName, TIEntries); 296 TIs[SymName] = TI; 297 } 298 // Catchable type arrays in the MS-ABI start with _CTA or __CTA. 299 else if (SymName.startswith("_CTA") || SymName.startswith("__CTA")) { 300 CatchableTypeArray CTA; 301 CTA.NumEntries = 302 *reinterpret_cast<const little32_t *>(SymContents.data()); 303 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 304 SymName, CTAEntries); 305 CTAs[SymName] = CTA; 306 } 307 // Catchable types in the MS-ABI start with _CT or __CT. 308 else if (SymName.startswith("_CT") || SymName.startswith("__CT")) { 309 const little32_t *DataPtr = 310 reinterpret_cast<const little32_t *>(SymContents.data()); 311 CatchableType CT; 312 CT.Flags = DataPtr[0]; 313 CT.NonVirtualBaseAdjustmentOffset = DataPtr[2]; 314 CT.VirtualBasePointerOffset = DataPtr[3]; 315 CT.VirtualBaseAdjustmentOffset = DataPtr[4]; 316 CT.Size = DataPtr[5]; 317 StringRef *I = std::begin(CT.Symbols), *E = std::end(CT.Symbols); 318 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 319 E)) 320 return; 321 CTs[SymName] = CT; 322 } 323 // Construction vtables in the Itanium ABI start with '_ZTT' or '__ZTT'. 324 else if (SymName.startswith("_ZTT") || SymName.startswith("__ZTT")) { 325 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 326 SymName, VTTEntries); 327 } 328 // Typeinfo names in the Itanium ABI start with '_ZTS' or '__ZTS'. 329 else if (SymName.startswith("_ZTS") || SymName.startswith("__ZTS")) { 330 TINames[SymName] = SymContents.slice(0, SymContents.find('\0')); 331 } 332 // Vtables in the Itanium ABI start with '_ZTV' or '__ZTV'. 333 else if (SymName.startswith("_ZTV") || SymName.startswith("__ZTV")) { 334 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 335 SymName, VTableSymEntries); 336 for (uint64_t SymOffI = 0; SymOffI < SymSize; SymOffI += BytesInAddress) { 337 auto Key = std::make_pair(SymName, SymOffI); 338 if (VTableSymEntries.count(Key)) 339 continue; 340 const char *DataPtr = 341 SymContents.substr(SymOffI, BytesInAddress).data(); 342 int64_t VData; 343 if (BytesInAddress == 8) 344 VData = *reinterpret_cast<const little64_t *>(DataPtr); 345 else 346 VData = *reinterpret_cast<const little32_t *>(DataPtr); 347 VTableDataEntries[Key] = VData; 348 } 349 } 350 // Typeinfo structures in the Itanium ABI start with '_ZTI' or '__ZTI'. 351 else if (SymName.startswith("_ZTI") || SymName.startswith("__ZTI")) { 352 // FIXME: Do something with these! 353 } 354 } 355 for (const auto &VFTableEntry : VFTableEntries) { 356 StringRef VFTableName = VFTableEntry.first.first; 357 uint64_t Offset = VFTableEntry.first.second; 358 StringRef SymName = VFTableEntry.second; 359 outs() << VFTableName << '[' << Offset << "]: " << SymName << '\n'; 360 } 361 for (const auto &VBTable : VBTables) { 362 StringRef VBTableName = VBTable.first; 363 uint32_t Idx = 0; 364 for (little32_t Offset : VBTable.second) { 365 outs() << VBTableName << '[' << Idx << "]: " << Offset << '\n'; 366 Idx += sizeof(Offset); 367 } 368 } 369 for (const auto &COLPair : COLs) { 370 StringRef COLName = COLPair.first; 371 const CompleteObjectLocator &COL = COLPair.second; 372 outs() << COLName << "[IsImageRelative]: " << COL.Data[0] << '\n'; 373 outs() << COLName << "[OffsetToTop]: " << COL.Data[1] << '\n'; 374 outs() << COLName << "[VFPtrOffset]: " << COL.Data[2] << '\n'; 375 outs() << COLName << "[TypeDescriptor]: " << COL.Symbols[0] << '\n'; 376 outs() << COLName << "[ClassHierarchyDescriptor]: " << COL.Symbols[1] 377 << '\n'; 378 } 379 for (const auto &CHDPair : CHDs) { 380 StringRef CHDName = CHDPair.first; 381 const ClassHierarchyDescriptor &CHD = CHDPair.second; 382 outs() << CHDName << "[AlwaysZero]: " << CHD.Data[0] << '\n'; 383 outs() << CHDName << "[Flags]: " << CHD.Data[1] << '\n'; 384 outs() << CHDName << "[NumClasses]: " << CHD.Data[2] << '\n'; 385 outs() << CHDName << "[BaseClassArray]: " << CHD.Symbols[0] << '\n'; 386 } 387 for (const auto &BCAEntry : BCAEntries) { 388 StringRef BCAName = BCAEntry.first.first; 389 uint64_t Offset = BCAEntry.first.second; 390 StringRef SymName = BCAEntry.second; 391 outs() << BCAName << '[' << Offset << "]: " << SymName << '\n'; 392 } 393 for (const auto &BCDPair : BCDs) { 394 StringRef BCDName = BCDPair.first; 395 const BaseClassDescriptor &BCD = BCDPair.second; 396 outs() << BCDName << "[TypeDescriptor]: " << BCD.Symbols[0] << '\n'; 397 outs() << BCDName << "[NumBases]: " << BCD.Data[0] << '\n'; 398 outs() << BCDName << "[OffsetInVBase]: " << BCD.Data[1] << '\n'; 399 outs() << BCDName << "[VBPtrOffset]: " << BCD.Data[2] << '\n'; 400 outs() << BCDName << "[OffsetInVBTable]: " << BCD.Data[3] << '\n'; 401 outs() << BCDName << "[Flags]: " << BCD.Data[4] << '\n'; 402 outs() << BCDName << "[ClassHierarchyDescriptor]: " << BCD.Symbols[1] 403 << '\n'; 404 } 405 for (const auto &TDPair : TDs) { 406 StringRef TDName = TDPair.first; 407 const TypeDescriptor &TD = TDPair.second; 408 outs() << TDName << "[VFPtr]: " << TD.Symbols[0] << '\n'; 409 outs() << TDName << "[AlwaysZero]: " << TD.AlwaysZero << '\n'; 410 outs() << TDName << "[MangledName]: "; 411 outs().write_escaped(TD.MangledName.rtrim(StringRef("\0", 1)), 412 /*UseHexEscapes=*/true) 413 << '\n'; 414 } 415 for (const auto &TIPair : TIs) { 416 StringRef TIName = TIPair.first; 417 const ThrowInfo &TI = TIPair.second; 418 auto dumpThrowInfoFlag = [&](const char *Name, uint32_t Flag) { 419 outs() << TIName << "[Flags." << Name 420 << "]: " << (TI.Flags & Flag ? "true" : "false") << '\n'; 421 }; 422 auto dumpThrowInfoSymbol = [&](const char *Name, int Offset) { 423 outs() << TIName << '[' << Name << "]: "; 424 auto Entry = TIEntries.find(std::make_pair(TIName, Offset)); 425 outs() << (Entry == TIEntries.end() ? "null" : Entry->second) << '\n'; 426 }; 427 outs() << TIName << "[Flags]: " << TI.Flags << '\n'; 428 dumpThrowInfoFlag("Const", 1); 429 dumpThrowInfoFlag("Volatile", 2); 430 dumpThrowInfoSymbol("CleanupFn", 4); 431 dumpThrowInfoSymbol("ForwardCompat", 8); 432 dumpThrowInfoSymbol("CatchableTypeArray", 12); 433 } 434 for (const auto &CTAPair : CTAs) { 435 StringRef CTAName = CTAPair.first; 436 const CatchableTypeArray &CTA = CTAPair.second; 437 438 outs() << CTAName << "[NumEntries]: " << CTA.NumEntries << '\n'; 439 440 unsigned Idx = 0; 441 for (auto I = CTAEntries.lower_bound(std::make_pair(CTAName, 0)), 442 E = CTAEntries.upper_bound(std::make_pair(CTAName, UINT64_MAX)); 443 I != E; ++I) 444 outs() << CTAName << '[' << Idx++ << "]: " << I->second << '\n'; 445 } 446 for (const auto &CTPair : CTs) { 447 StringRef CTName = CTPair.first; 448 const CatchableType &CT = CTPair.second; 449 auto dumpCatchableTypeFlag = [&](const char *Name, uint32_t Flag) { 450 outs() << CTName << "[Flags." << Name 451 << "]: " << (CT.Flags & Flag ? "true" : "false") << '\n'; 452 }; 453 outs() << CTName << "[Flags]: " << CT.Flags << '\n'; 454 dumpCatchableTypeFlag("ScalarType", 1); 455 dumpCatchableTypeFlag("VirtualInheritance", 4); 456 outs() << CTName << "[TypeDescriptor]: " << CT.Symbols[0] << '\n'; 457 outs() << CTName << "[NonVirtualBaseAdjustmentOffset]: " 458 << CT.NonVirtualBaseAdjustmentOffset << '\n'; 459 outs() << CTName 460 << "[VirtualBasePointerOffset]: " << CT.VirtualBasePointerOffset 461 << '\n'; 462 outs() << CTName << "[VirtualBaseAdjustmentOffset]: " 463 << CT.VirtualBaseAdjustmentOffset << '\n'; 464 outs() << CTName << "[Size]: " << CT.Size << '\n'; 465 outs() << CTName 466 << "[CopyCtor]: " << (CT.Symbols[1].empty() ? "null" : CT.Symbols[1]) 467 << '\n'; 468 } 469 for (const auto &VTTPair : VTTEntries) { 470 StringRef VTTName = VTTPair.first.first; 471 uint64_t VTTOffset = VTTPair.first.second; 472 StringRef VTTEntry = VTTPair.second; 473 outs() << VTTName << '[' << VTTOffset << "]: " << VTTEntry << '\n'; 474 } 475 for (const auto &TIPair : TINames) { 476 StringRef TIName = TIPair.first; 477 outs() << TIName << ": " << TIPair.second << '\n'; 478 } 479 auto VTableSymI = VTableSymEntries.begin(); 480 auto VTableSymE = VTableSymEntries.end(); 481 auto VTableDataI = VTableDataEntries.begin(); 482 auto VTableDataE = VTableDataEntries.end(); 483 for (;;) { 484 bool SymDone = VTableSymI == VTableSymE; 485 bool DataDone = VTableDataI == VTableDataE; 486 if (SymDone && DataDone) 487 break; 488 if (!SymDone && (DataDone || VTableSymI->first < VTableDataI->first)) { 489 StringRef VTableName = VTableSymI->first.first; 490 uint64_t Offset = VTableSymI->first.second; 491 StringRef VTableEntry = VTableSymI->second; 492 outs() << VTableName << '[' << Offset << "]: "; 493 outs() << VTableEntry; 494 outs() << '\n'; 495 ++VTableSymI; 496 continue; 497 } 498 if (!DataDone && (SymDone || VTableDataI->first < VTableSymI->first)) { 499 StringRef VTableName = VTableDataI->first.first; 500 uint64_t Offset = VTableDataI->first.second; 501 int64_t VTableEntry = VTableDataI->second; 502 outs() << VTableName << '[' << Offset << "]: "; 503 outs() << VTableEntry; 504 outs() << '\n'; 505 ++VTableDataI; 506 continue; 507 } 508 } 509 } 510 511 static void dumpArchive(const Archive *Arc) { 512 for (const Archive::Child &ArcC : Arc->children()) { 513 ErrorOr<std::unique_ptr<Binary>> ChildOrErr = ArcC.getAsBinary(); 514 if (std::error_code EC = ChildOrErr.getError()) { 515 // Ignore non-object files. 516 if (EC != object_error::invalid_file_type) 517 reportError(Arc->getFileName(), EC.message()); 518 continue; 519 } 520 521 if (ObjectFile *Obj = dyn_cast<ObjectFile>(&*ChildOrErr.get())) 522 dumpCXXData(Obj); 523 else 524 reportError(Arc->getFileName(), cxxdump_error::unrecognized_file_format); 525 } 526 } 527 528 static void dumpInput(StringRef File) { 529 // If file isn't stdin, check that it exists. 530 if (File != "-" && !sys::fs::exists(File)) { 531 reportError(File, cxxdump_error::file_not_found); 532 return; 533 } 534 535 // Attempt to open the binary. 536 ErrorOr<OwningBinary<Binary>> BinaryOrErr = createBinary(File); 537 if (std::error_code EC = BinaryOrErr.getError()) { 538 reportError(File, EC); 539 return; 540 } 541 Binary &Binary = *BinaryOrErr.get().getBinary(); 542 543 if (Archive *Arc = dyn_cast<Archive>(&Binary)) 544 dumpArchive(Arc); 545 else if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary)) 546 dumpCXXData(Obj); 547 else 548 reportError(File, cxxdump_error::unrecognized_file_format); 549 } 550 551 int main(int argc, const char *argv[]) { 552 sys::PrintStackTraceOnErrorSignal(); 553 PrettyStackTraceProgram X(argc, argv); 554 llvm_shutdown_obj Y; 555 556 // Initialize targets. 557 llvm::InitializeAllTargetInfos(); 558 559 // Register the target printer for --version. 560 cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion); 561 562 cl::ParseCommandLineOptions(argc, argv, "LLVM C++ ABI Data Dumper\n"); 563 564 // Default to stdin if no filename is specified. 565 if (opts::InputFilenames.size() == 0) 566 opts::InputFilenames.push_back("-"); 567 568 std::for_each(opts::InputFilenames.begin(), opts::InputFilenames.end(), 569 dumpInput); 570 571 return ReturnValue; 572 } 573