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; 104 if (error(Reloc.getOffset(Offset))) 105 return true; 106 if (Offset >= SymOffset && Offset < SymEnd) { 107 *I = RelocSymName; 108 ++I; 109 } 110 } 111 } 112 return false; 113 } 114 115 static bool collectRelocationOffsets( 116 const ObjectFile *Obj, const SectionRef &Sec, uint64_t SecAddress, 117 uint64_t SymAddress, uint64_t SymSize, StringRef SymName, 118 std::map<std::pair<StringRef, uint64_t>, StringRef> &Collection) { 119 uint64_t SymOffset = SymAddress - SecAddress; 120 uint64_t SymEnd = SymOffset + SymSize; 121 for (const SectionRef &SR : getRelocSections(Obj, Sec)) { 122 for (const object::RelocationRef &Reloc : SR.relocations()) { 123 const object::symbol_iterator RelocSymI = Reloc.getSymbol(); 124 if (RelocSymI == Obj->symbol_end()) 125 continue; 126 StringRef RelocSymName; 127 if (error(RelocSymI->getName(RelocSymName))) 128 return true; 129 uint64_t Offset; 130 if (error(Reloc.getOffset(Offset))) 131 return true; 132 if (Offset >= SymOffset && Offset < SymEnd) 133 Collection[std::make_pair(SymName, Offset - SymOffset)] = RelocSymName; 134 } 135 } 136 return false; 137 } 138 139 static void dumpCXXData(const ObjectFile *Obj) { 140 struct CompleteObjectLocator { 141 StringRef Symbols[2]; 142 ArrayRef<little32_t> Data; 143 }; 144 struct ClassHierarchyDescriptor { 145 StringRef Symbols[1]; 146 ArrayRef<little32_t> Data; 147 }; 148 struct BaseClassDescriptor { 149 StringRef Symbols[2]; 150 ArrayRef<little32_t> Data; 151 }; 152 struct TypeDescriptor { 153 StringRef Symbols[1]; 154 uint64_t AlwaysZero; 155 StringRef MangledName; 156 }; 157 struct ThrowInfo { 158 uint32_t Flags; 159 }; 160 struct CatchableTypeArray { 161 uint32_t NumEntries; 162 }; 163 struct CatchableType { 164 uint32_t Flags; 165 uint32_t NonVirtualBaseAdjustmentOffset; 166 int32_t VirtualBasePointerOffset; 167 uint32_t VirtualBaseAdjustmentOffset; 168 uint32_t Size; 169 StringRef Symbols[2]; 170 }; 171 std::map<std::pair<StringRef, uint64_t>, StringRef> VFTableEntries; 172 std::map<std::pair<StringRef, uint64_t>, StringRef> TIEntries; 173 std::map<std::pair<StringRef, uint64_t>, StringRef> CTAEntries; 174 std::map<StringRef, ArrayRef<little32_t>> VBTables; 175 std::map<StringRef, CompleteObjectLocator> COLs; 176 std::map<StringRef, ClassHierarchyDescriptor> CHDs; 177 std::map<std::pair<StringRef, uint64_t>, StringRef> BCAEntries; 178 std::map<StringRef, BaseClassDescriptor> BCDs; 179 std::map<StringRef, TypeDescriptor> TDs; 180 std::map<StringRef, ThrowInfo> TIs; 181 std::map<StringRef, CatchableTypeArray> CTAs; 182 std::map<StringRef, CatchableType> CTs; 183 184 std::map<std::pair<StringRef, uint64_t>, StringRef> VTableSymEntries; 185 std::map<std::pair<StringRef, uint64_t>, int64_t> VTableDataEntries; 186 std::map<std::pair<StringRef, uint64_t>, StringRef> VTTEntries; 187 std::map<StringRef, StringRef> TINames; 188 189 uint8_t BytesInAddress = Obj->getBytesInAddress(); 190 191 std::vector<std::pair<SymbolRef, uint64_t>> SymAddr = 192 object::computeSymbolSizes(*Obj); 193 194 for (auto &P : SymAddr) { 195 object::SymbolRef Sym = P.first; 196 uint64_t SymSize = P.second; 197 StringRef SymName; 198 if (error(Sym.getName(SymName))) 199 return; 200 object::section_iterator SecI(Obj->section_begin()); 201 if (error(Sym.getSection(SecI))) 202 return; 203 // Skip external symbols. 204 if (SecI == Obj->section_end()) 205 continue; 206 const SectionRef &Sec = *SecI; 207 // Skip virtual or BSS sections. 208 if (Sec.isBSS() || Sec.isVirtual()) 209 continue; 210 StringRef SecContents; 211 if (error(Sec.getContents(SecContents))) 212 return; 213 uint64_t SymAddress; 214 if (error(Sym.getAddress(SymAddress))) 215 return; 216 uint64_t SecAddress = Sec.getAddress(); 217 uint64_t SecSize = Sec.getSize(); 218 uint64_t SymOffset = SymAddress - SecAddress; 219 StringRef SymContents = SecContents.substr(SymOffset, SymSize); 220 221 // VFTables in the MS-ABI start with '??_7' and are contained within their 222 // own COMDAT section. We then determine the contents of the VFTable by 223 // looking at each relocation in the section. 224 if (SymName.startswith("??_7")) { 225 // Each relocation either names a virtual method or a thunk. We note the 226 // offset into the section and the symbol used for the relocation. 227 collectRelocationOffsets(Obj, Sec, SecAddress, SecAddress, SecSize, 228 SymName, VFTableEntries); 229 } 230 // VBTables in the MS-ABI start with '??_8' and are filled with 32-bit 231 // offsets of virtual bases. 232 else if (SymName.startswith("??_8")) { 233 ArrayRef<little32_t> VBTableData( 234 reinterpret_cast<const little32_t *>(SymContents.data()), 235 SymContents.size() / sizeof(little32_t)); 236 VBTables[SymName] = VBTableData; 237 } 238 // Complete object locators in the MS-ABI start with '??_R4' 239 else if (SymName.startswith("??_R4")) { 240 CompleteObjectLocator COL; 241 COL.Data = ArrayRef<little32_t>( 242 reinterpret_cast<const little32_t *>(SymContents.data()), 3); 243 StringRef *I = std::begin(COL.Symbols), *E = std::end(COL.Symbols); 244 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 245 E)) 246 return; 247 COLs[SymName] = COL; 248 } 249 // Class hierarchy descriptors in the MS-ABI start with '??_R3' 250 else if (SymName.startswith("??_R3")) { 251 ClassHierarchyDescriptor CHD; 252 CHD.Data = ArrayRef<little32_t>( 253 reinterpret_cast<const little32_t *>(SymContents.data()), 3); 254 StringRef *I = std::begin(CHD.Symbols), *E = std::end(CHD.Symbols); 255 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 256 E)) 257 return; 258 CHDs[SymName] = CHD; 259 } 260 // Class hierarchy descriptors in the MS-ABI start with '??_R2' 261 else if (SymName.startswith("??_R2")) { 262 // Each relocation names a base class descriptor. We note the offset into 263 // the section and the symbol used for the relocation. 264 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 265 SymName, BCAEntries); 266 } 267 // Base class descriptors in the MS-ABI start with '??_R1' 268 else if (SymName.startswith("??_R1")) { 269 BaseClassDescriptor BCD; 270 BCD.Data = ArrayRef<little32_t>( 271 reinterpret_cast<const little32_t *>(SymContents.data()) + 1, 5); 272 StringRef *I = std::begin(BCD.Symbols), *E = std::end(BCD.Symbols); 273 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 274 E)) 275 return; 276 BCDs[SymName] = BCD; 277 } 278 // Type descriptors in the MS-ABI start with '??_R0' 279 else if (SymName.startswith("??_R0")) { 280 const char *DataPtr = SymContents.drop_front(BytesInAddress).data(); 281 TypeDescriptor TD; 282 if (BytesInAddress == 8) 283 TD.AlwaysZero = *reinterpret_cast<const little64_t *>(DataPtr); 284 else 285 TD.AlwaysZero = *reinterpret_cast<const little32_t *>(DataPtr); 286 TD.MangledName = SymContents.drop_front(BytesInAddress * 2); 287 StringRef *I = std::begin(TD.Symbols), *E = std::end(TD.Symbols); 288 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 289 E)) 290 return; 291 TDs[SymName] = TD; 292 } 293 // Throw descriptors in the MS-ABI start with '_TI' 294 else if (SymName.startswith("_TI") || SymName.startswith("__TI")) { 295 ThrowInfo TI; 296 TI.Flags = *reinterpret_cast<const little32_t *>(SymContents.data()); 297 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 298 SymName, TIEntries); 299 TIs[SymName] = TI; 300 } 301 // Catchable type arrays in the MS-ABI start with _CTA or __CTA. 302 else if (SymName.startswith("_CTA") || SymName.startswith("__CTA")) { 303 CatchableTypeArray CTA; 304 CTA.NumEntries = 305 *reinterpret_cast<const little32_t *>(SymContents.data()); 306 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 307 SymName, CTAEntries); 308 CTAs[SymName] = CTA; 309 } 310 // Catchable types in the MS-ABI start with _CT or __CT. 311 else if (SymName.startswith("_CT") || SymName.startswith("__CT")) { 312 const little32_t *DataPtr = 313 reinterpret_cast<const little32_t *>(SymContents.data()); 314 CatchableType CT; 315 CT.Flags = DataPtr[0]; 316 CT.NonVirtualBaseAdjustmentOffset = DataPtr[2]; 317 CT.VirtualBasePointerOffset = DataPtr[3]; 318 CT.VirtualBaseAdjustmentOffset = DataPtr[4]; 319 CT.Size = DataPtr[5]; 320 StringRef *I = std::begin(CT.Symbols), *E = std::end(CT.Symbols); 321 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 322 E)) 323 return; 324 CTs[SymName] = CT; 325 } 326 // Construction vtables in the Itanium ABI start with '_ZTT' or '__ZTT'. 327 else if (SymName.startswith("_ZTT") || SymName.startswith("__ZTT")) { 328 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 329 SymName, VTTEntries); 330 } 331 // Typeinfo names in the Itanium ABI start with '_ZTS' or '__ZTS'. 332 else if (SymName.startswith("_ZTS") || SymName.startswith("__ZTS")) { 333 TINames[SymName] = SymContents.slice(0, SymContents.find('\0')); 334 } 335 // Vtables in the Itanium ABI start with '_ZTV' or '__ZTV'. 336 else if (SymName.startswith("_ZTV") || SymName.startswith("__ZTV")) { 337 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 338 SymName, VTableSymEntries); 339 for (uint64_t SymOffI = 0; SymOffI < SymSize; SymOffI += BytesInAddress) { 340 auto Key = std::make_pair(SymName, SymOffI); 341 if (VTableSymEntries.count(Key)) 342 continue; 343 const char *DataPtr = 344 SymContents.substr(SymOffI, BytesInAddress).data(); 345 int64_t VData; 346 if (BytesInAddress == 8) 347 VData = *reinterpret_cast<const little64_t *>(DataPtr); 348 else 349 VData = *reinterpret_cast<const little32_t *>(DataPtr); 350 VTableDataEntries[Key] = VData; 351 } 352 } 353 // Typeinfo structures in the Itanium ABI start with '_ZTI' or '__ZTI'. 354 else if (SymName.startswith("_ZTI") || SymName.startswith("__ZTI")) { 355 // FIXME: Do something with these! 356 } 357 } 358 for (const auto &VFTableEntry : VFTableEntries) { 359 StringRef VFTableName = VFTableEntry.first.first; 360 uint64_t Offset = VFTableEntry.first.second; 361 StringRef SymName = VFTableEntry.second; 362 outs() << VFTableName << '[' << Offset << "]: " << SymName << '\n'; 363 } 364 for (const auto &VBTable : VBTables) { 365 StringRef VBTableName = VBTable.first; 366 uint32_t Idx = 0; 367 for (little32_t Offset : VBTable.second) { 368 outs() << VBTableName << '[' << Idx << "]: " << Offset << '\n'; 369 Idx += sizeof(Offset); 370 } 371 } 372 for (const auto &COLPair : COLs) { 373 StringRef COLName = COLPair.first; 374 const CompleteObjectLocator &COL = COLPair.second; 375 outs() << COLName << "[IsImageRelative]: " << COL.Data[0] << '\n'; 376 outs() << COLName << "[OffsetToTop]: " << COL.Data[1] << '\n'; 377 outs() << COLName << "[VFPtrOffset]: " << COL.Data[2] << '\n'; 378 outs() << COLName << "[TypeDescriptor]: " << COL.Symbols[0] << '\n'; 379 outs() << COLName << "[ClassHierarchyDescriptor]: " << COL.Symbols[1] 380 << '\n'; 381 } 382 for (const auto &CHDPair : CHDs) { 383 StringRef CHDName = CHDPair.first; 384 const ClassHierarchyDescriptor &CHD = CHDPair.second; 385 outs() << CHDName << "[AlwaysZero]: " << CHD.Data[0] << '\n'; 386 outs() << CHDName << "[Flags]: " << CHD.Data[1] << '\n'; 387 outs() << CHDName << "[NumClasses]: " << CHD.Data[2] << '\n'; 388 outs() << CHDName << "[BaseClassArray]: " << CHD.Symbols[0] << '\n'; 389 } 390 for (const auto &BCAEntry : BCAEntries) { 391 StringRef BCAName = BCAEntry.first.first; 392 uint64_t Offset = BCAEntry.first.second; 393 StringRef SymName = BCAEntry.second; 394 outs() << BCAName << '[' << Offset << "]: " << SymName << '\n'; 395 } 396 for (const auto &BCDPair : BCDs) { 397 StringRef BCDName = BCDPair.first; 398 const BaseClassDescriptor &BCD = BCDPair.second; 399 outs() << BCDName << "[TypeDescriptor]: " << BCD.Symbols[0] << '\n'; 400 outs() << BCDName << "[NumBases]: " << BCD.Data[0] << '\n'; 401 outs() << BCDName << "[OffsetInVBase]: " << BCD.Data[1] << '\n'; 402 outs() << BCDName << "[VBPtrOffset]: " << BCD.Data[2] << '\n'; 403 outs() << BCDName << "[OffsetInVBTable]: " << BCD.Data[3] << '\n'; 404 outs() << BCDName << "[Flags]: " << BCD.Data[4] << '\n'; 405 outs() << BCDName << "[ClassHierarchyDescriptor]: " << BCD.Symbols[1] 406 << '\n'; 407 } 408 for (const auto &TDPair : TDs) { 409 StringRef TDName = TDPair.first; 410 const TypeDescriptor &TD = TDPair.second; 411 outs() << TDName << "[VFPtr]: " << TD.Symbols[0] << '\n'; 412 outs() << TDName << "[AlwaysZero]: " << TD.AlwaysZero << '\n'; 413 outs() << TDName << "[MangledName]: "; 414 outs().write_escaped(TD.MangledName.rtrim(StringRef("\0", 1)), 415 /*UseHexEscapes=*/true) 416 << '\n'; 417 } 418 for (const auto &TIPair : TIs) { 419 StringRef TIName = TIPair.first; 420 const ThrowInfo &TI = TIPair.second; 421 auto dumpThrowInfoFlag = [&](const char *Name, uint32_t Flag) { 422 outs() << TIName << "[Flags." << Name 423 << "]: " << (TI.Flags & Flag ? "true" : "false") << '\n'; 424 }; 425 auto dumpThrowInfoSymbol = [&](const char *Name, int Offset) { 426 outs() << TIName << '[' << Name << "]: "; 427 auto Entry = TIEntries.find(std::make_pair(TIName, Offset)); 428 outs() << (Entry == TIEntries.end() ? "null" : Entry->second) << '\n'; 429 }; 430 outs() << TIName << "[Flags]: " << TI.Flags << '\n'; 431 dumpThrowInfoFlag("Const", 1); 432 dumpThrowInfoFlag("Volatile", 2); 433 dumpThrowInfoSymbol("CleanupFn", 4); 434 dumpThrowInfoSymbol("ForwardCompat", 8); 435 dumpThrowInfoSymbol("CatchableTypeArray", 12); 436 } 437 for (const auto &CTAPair : CTAs) { 438 StringRef CTAName = CTAPair.first; 439 const CatchableTypeArray &CTA = CTAPair.second; 440 441 outs() << CTAName << "[NumEntries]: " << CTA.NumEntries << '\n'; 442 443 unsigned Idx = 0; 444 for (auto I = CTAEntries.lower_bound(std::make_pair(CTAName, 0)), 445 E = CTAEntries.upper_bound(std::make_pair(CTAName, UINT64_MAX)); 446 I != E; ++I) 447 outs() << CTAName << '[' << Idx++ << "]: " << I->second << '\n'; 448 } 449 for (const auto &CTPair : CTs) { 450 StringRef CTName = CTPair.first; 451 const CatchableType &CT = CTPair.second; 452 auto dumpCatchableTypeFlag = [&](const char *Name, uint32_t Flag) { 453 outs() << CTName << "[Flags." << Name 454 << "]: " << (CT.Flags & Flag ? "true" : "false") << '\n'; 455 }; 456 outs() << CTName << "[Flags]: " << CT.Flags << '\n'; 457 dumpCatchableTypeFlag("ScalarType", 1); 458 dumpCatchableTypeFlag("VirtualInheritance", 4); 459 outs() << CTName << "[TypeDescriptor]: " << CT.Symbols[0] << '\n'; 460 outs() << CTName << "[NonVirtualBaseAdjustmentOffset]: " 461 << CT.NonVirtualBaseAdjustmentOffset << '\n'; 462 outs() << CTName 463 << "[VirtualBasePointerOffset]: " << CT.VirtualBasePointerOffset 464 << '\n'; 465 outs() << CTName << "[VirtualBaseAdjustmentOffset]: " 466 << CT.VirtualBaseAdjustmentOffset << '\n'; 467 outs() << CTName << "[Size]: " << CT.Size << '\n'; 468 outs() << CTName 469 << "[CopyCtor]: " << (CT.Symbols[1].empty() ? "null" : CT.Symbols[1]) 470 << '\n'; 471 } 472 for (const auto &VTTPair : VTTEntries) { 473 StringRef VTTName = VTTPair.first.first; 474 uint64_t VTTOffset = VTTPair.first.second; 475 StringRef VTTEntry = VTTPair.second; 476 outs() << VTTName << '[' << VTTOffset << "]: " << VTTEntry << '\n'; 477 } 478 for (const auto &TIPair : TINames) { 479 StringRef TIName = TIPair.first; 480 outs() << TIName << ": " << TIPair.second << '\n'; 481 } 482 auto VTableSymI = VTableSymEntries.begin(); 483 auto VTableSymE = VTableSymEntries.end(); 484 auto VTableDataI = VTableDataEntries.begin(); 485 auto VTableDataE = VTableDataEntries.end(); 486 for (;;) { 487 bool SymDone = VTableSymI == VTableSymE; 488 bool DataDone = VTableDataI == VTableDataE; 489 if (SymDone && DataDone) 490 break; 491 if (!SymDone && (DataDone || VTableSymI->first < VTableDataI->first)) { 492 StringRef VTableName = VTableSymI->first.first; 493 uint64_t Offset = VTableSymI->first.second; 494 StringRef VTableEntry = VTableSymI->second; 495 outs() << VTableName << '[' << Offset << "]: "; 496 outs() << VTableEntry; 497 outs() << '\n'; 498 ++VTableSymI; 499 continue; 500 } 501 if (!DataDone && (SymDone || VTableDataI->first < VTableSymI->first)) { 502 StringRef VTableName = VTableDataI->first.first; 503 uint64_t Offset = VTableDataI->first.second; 504 int64_t VTableEntry = VTableDataI->second; 505 outs() << VTableName << '[' << Offset << "]: "; 506 outs() << VTableEntry; 507 outs() << '\n'; 508 ++VTableDataI; 509 continue; 510 } 511 } 512 } 513 514 static void dumpArchive(const Archive *Arc) { 515 for (const Archive::Child &ArcC : Arc->children()) { 516 ErrorOr<std::unique_ptr<Binary>> ChildOrErr = ArcC.getAsBinary(); 517 if (std::error_code EC = ChildOrErr.getError()) { 518 // Ignore non-object files. 519 if (EC != object_error::invalid_file_type) 520 reportError(Arc->getFileName(), EC.message()); 521 continue; 522 } 523 524 if (ObjectFile *Obj = dyn_cast<ObjectFile>(&*ChildOrErr.get())) 525 dumpCXXData(Obj); 526 else 527 reportError(Arc->getFileName(), cxxdump_error::unrecognized_file_format); 528 } 529 } 530 531 static void dumpInput(StringRef File) { 532 // If file isn't stdin, check that it exists. 533 if (File != "-" && !sys::fs::exists(File)) { 534 reportError(File, cxxdump_error::file_not_found); 535 return; 536 } 537 538 // Attempt to open the binary. 539 ErrorOr<OwningBinary<Binary>> BinaryOrErr = createBinary(File); 540 if (std::error_code EC = BinaryOrErr.getError()) { 541 reportError(File, EC); 542 return; 543 } 544 Binary &Binary = *BinaryOrErr.get().getBinary(); 545 546 if (Archive *Arc = dyn_cast<Archive>(&Binary)) 547 dumpArchive(Arc); 548 else if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary)) 549 dumpCXXData(Obj); 550 else 551 reportError(File, cxxdump_error::unrecognized_file_format); 552 } 553 554 int main(int argc, const char *argv[]) { 555 sys::PrintStackTraceOnErrorSignal(); 556 PrettyStackTraceProgram X(argc, argv); 557 llvm_shutdown_obj Y; 558 559 // Initialize targets. 560 llvm::InitializeAllTargetInfos(); 561 562 // Register the target printer for --version. 563 cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion); 564 565 cl::ParseCommandLineOptions(argc, argv, "LLVM C++ ABI Data Dumper\n"); 566 567 // Default to stdin if no filename is specified. 568 if (opts::InputFilenames.size() == 0) 569 opts::InputFilenames.push_back("-"); 570 571 std::for_each(opts::InputFilenames.begin(), opts::InputFilenames.end(), 572 dumpInput); 573 574 return ReturnValue; 575 } 576