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