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 ErrorOr<std::vector<std::pair<SymbolRef, uint64_t>>> SymAddrOrErr = 192 object::computeSymbolSizes(*Obj); 193 if (error(SymAddrOrErr.getError())) 194 return; 195 196 for (auto &P : *SymAddrOrErr) { 197 object::SymbolRef Sym = P.first; 198 uint64_t SymSize = P.second; 199 StringRef SymName; 200 if (error(Sym.getName(SymName))) 201 return; 202 object::section_iterator SecI(Obj->section_begin()); 203 if (error(Sym.getSection(SecI))) 204 return; 205 // Skip external symbols. 206 if (SecI == Obj->section_end()) 207 continue; 208 const SectionRef &Sec = *SecI; 209 // Skip virtual or BSS sections. 210 if (Sec.isBSS() || Sec.isVirtual()) 211 continue; 212 StringRef SecContents; 213 if (error(Sec.getContents(SecContents))) 214 return; 215 uint64_t SymAddress; 216 if (error(Sym.getAddress(SymAddress))) 217 return; 218 uint64_t SecAddress = Sec.getAddress(); 219 uint64_t SecSize = Sec.getSize(); 220 uint64_t SymOffset = SymAddress - SecAddress; 221 StringRef SymContents = SecContents.substr(SymOffset, SymSize); 222 223 // VFTables in the MS-ABI start with '??_7' and are contained within their 224 // own COMDAT section. We then determine the contents of the VFTable by 225 // looking at each relocation in the section. 226 if (SymName.startswith("??_7")) { 227 // Each relocation either names a virtual method or a thunk. We note the 228 // offset into the section and the symbol used for the relocation. 229 collectRelocationOffsets(Obj, Sec, SecAddress, SecAddress, SecSize, 230 SymName, VFTableEntries); 231 } 232 // VBTables in the MS-ABI start with '??_8' and are filled with 32-bit 233 // offsets of virtual bases. 234 else if (SymName.startswith("??_8")) { 235 ArrayRef<little32_t> VBTableData( 236 reinterpret_cast<const little32_t *>(SymContents.data()), 237 SymContents.size() / sizeof(little32_t)); 238 VBTables[SymName] = VBTableData; 239 } 240 // Complete object locators in the MS-ABI start with '??_R4' 241 else if (SymName.startswith("??_R4")) { 242 CompleteObjectLocator COL; 243 COL.Data = ArrayRef<little32_t>( 244 reinterpret_cast<const little32_t *>(SymContents.data()), 3); 245 StringRef *I = std::begin(COL.Symbols), *E = std::end(COL.Symbols); 246 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 247 E)) 248 return; 249 COLs[SymName] = COL; 250 } 251 // Class hierarchy descriptors in the MS-ABI start with '??_R3' 252 else if (SymName.startswith("??_R3")) { 253 ClassHierarchyDescriptor CHD; 254 CHD.Data = ArrayRef<little32_t>( 255 reinterpret_cast<const little32_t *>(SymContents.data()), 3); 256 StringRef *I = std::begin(CHD.Symbols), *E = std::end(CHD.Symbols); 257 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 258 E)) 259 return; 260 CHDs[SymName] = CHD; 261 } 262 // Class hierarchy descriptors in the MS-ABI start with '??_R2' 263 else if (SymName.startswith("??_R2")) { 264 // Each relocation names a base class descriptor. We note the offset into 265 // the section and the symbol used for the relocation. 266 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 267 SymName, BCAEntries); 268 } 269 // Base class descriptors in the MS-ABI start with '??_R1' 270 else if (SymName.startswith("??_R1")) { 271 BaseClassDescriptor BCD; 272 BCD.Data = ArrayRef<little32_t>( 273 reinterpret_cast<const little32_t *>(SymContents.data()) + 1, 5); 274 StringRef *I = std::begin(BCD.Symbols), *E = std::end(BCD.Symbols); 275 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 276 E)) 277 return; 278 BCDs[SymName] = BCD; 279 } 280 // Type descriptors in the MS-ABI start with '??_R0' 281 else if (SymName.startswith("??_R0")) { 282 const char *DataPtr = SymContents.drop_front(BytesInAddress).data(); 283 TypeDescriptor TD; 284 if (BytesInAddress == 8) 285 TD.AlwaysZero = *reinterpret_cast<const little64_t *>(DataPtr); 286 else 287 TD.AlwaysZero = *reinterpret_cast<const little32_t *>(DataPtr); 288 TD.MangledName = SymContents.drop_front(BytesInAddress * 2); 289 StringRef *I = std::begin(TD.Symbols), *E = std::end(TD.Symbols); 290 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 291 E)) 292 return; 293 TDs[SymName] = TD; 294 } 295 // Throw descriptors in the MS-ABI start with '_TI' 296 else if (SymName.startswith("_TI") || SymName.startswith("__TI")) { 297 ThrowInfo TI; 298 TI.Flags = *reinterpret_cast<const little32_t *>(SymContents.data()); 299 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 300 SymName, TIEntries); 301 TIs[SymName] = TI; 302 } 303 // Catchable type arrays in the MS-ABI start with _CTA or __CTA. 304 else if (SymName.startswith("_CTA") || SymName.startswith("__CTA")) { 305 CatchableTypeArray CTA; 306 CTA.NumEntries = 307 *reinterpret_cast<const little32_t *>(SymContents.data()); 308 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 309 SymName, CTAEntries); 310 CTAs[SymName] = CTA; 311 } 312 // Catchable types in the MS-ABI start with _CT or __CT. 313 else if (SymName.startswith("_CT") || SymName.startswith("__CT")) { 314 const little32_t *DataPtr = 315 reinterpret_cast<const little32_t *>(SymContents.data()); 316 CatchableType CT; 317 CT.Flags = DataPtr[0]; 318 CT.NonVirtualBaseAdjustmentOffset = DataPtr[2]; 319 CT.VirtualBasePointerOffset = DataPtr[3]; 320 CT.VirtualBaseAdjustmentOffset = DataPtr[4]; 321 CT.Size = DataPtr[5]; 322 StringRef *I = std::begin(CT.Symbols), *E = std::end(CT.Symbols); 323 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 324 E)) 325 return; 326 CTs[SymName] = CT; 327 } 328 // Construction vtables in the Itanium ABI start with '_ZTT' or '__ZTT'. 329 else if (SymName.startswith("_ZTT") || SymName.startswith("__ZTT")) { 330 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 331 SymName, VTTEntries); 332 } 333 // Typeinfo names in the Itanium ABI start with '_ZTS' or '__ZTS'. 334 else if (SymName.startswith("_ZTS") || SymName.startswith("__ZTS")) { 335 TINames[SymName] = SymContents.slice(0, SymContents.find('\0')); 336 } 337 // Vtables in the Itanium ABI start with '_ZTV' or '__ZTV'. 338 else if (SymName.startswith("_ZTV") || SymName.startswith("__ZTV")) { 339 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 340 SymName, VTableSymEntries); 341 for (uint64_t SymOffI = 0; SymOffI < SymSize; SymOffI += BytesInAddress) { 342 auto Key = std::make_pair(SymName, SymOffI); 343 if (VTableSymEntries.count(Key)) 344 continue; 345 const char *DataPtr = 346 SymContents.substr(SymOffI, BytesInAddress).data(); 347 int64_t VData; 348 if (BytesInAddress == 8) 349 VData = *reinterpret_cast<const little64_t *>(DataPtr); 350 else 351 VData = *reinterpret_cast<const little32_t *>(DataPtr); 352 VTableDataEntries[Key] = VData; 353 } 354 } 355 // Typeinfo structures in the Itanium ABI start with '_ZTI' or '__ZTI'. 356 else if (SymName.startswith("_ZTI") || SymName.startswith("__ZTI")) { 357 // FIXME: Do something with these! 358 } 359 } 360 for (const auto &VFTableEntry : VFTableEntries) { 361 StringRef VFTableName = VFTableEntry.first.first; 362 uint64_t Offset = VFTableEntry.first.second; 363 StringRef SymName = VFTableEntry.second; 364 outs() << VFTableName << '[' << Offset << "]: " << SymName << '\n'; 365 } 366 for (const auto &VBTable : VBTables) { 367 StringRef VBTableName = VBTable.first; 368 uint32_t Idx = 0; 369 for (little32_t Offset : VBTable.second) { 370 outs() << VBTableName << '[' << Idx << "]: " << Offset << '\n'; 371 Idx += sizeof(Offset); 372 } 373 } 374 for (const auto &COLPair : COLs) { 375 StringRef COLName = COLPair.first; 376 const CompleteObjectLocator &COL = COLPair.second; 377 outs() << COLName << "[IsImageRelative]: " << COL.Data[0] << '\n'; 378 outs() << COLName << "[OffsetToTop]: " << COL.Data[1] << '\n'; 379 outs() << COLName << "[VFPtrOffset]: " << COL.Data[2] << '\n'; 380 outs() << COLName << "[TypeDescriptor]: " << COL.Symbols[0] << '\n'; 381 outs() << COLName << "[ClassHierarchyDescriptor]: " << COL.Symbols[1] 382 << '\n'; 383 } 384 for (const auto &CHDPair : CHDs) { 385 StringRef CHDName = CHDPair.first; 386 const ClassHierarchyDescriptor &CHD = CHDPair.second; 387 outs() << CHDName << "[AlwaysZero]: " << CHD.Data[0] << '\n'; 388 outs() << CHDName << "[Flags]: " << CHD.Data[1] << '\n'; 389 outs() << CHDName << "[NumClasses]: " << CHD.Data[2] << '\n'; 390 outs() << CHDName << "[BaseClassArray]: " << CHD.Symbols[0] << '\n'; 391 } 392 for (const auto &BCAEntry : BCAEntries) { 393 StringRef BCAName = BCAEntry.first.first; 394 uint64_t Offset = BCAEntry.first.second; 395 StringRef SymName = BCAEntry.second; 396 outs() << BCAName << '[' << Offset << "]: " << SymName << '\n'; 397 } 398 for (const auto &BCDPair : BCDs) { 399 StringRef BCDName = BCDPair.first; 400 const BaseClassDescriptor &BCD = BCDPair.second; 401 outs() << BCDName << "[TypeDescriptor]: " << BCD.Symbols[0] << '\n'; 402 outs() << BCDName << "[NumBases]: " << BCD.Data[0] << '\n'; 403 outs() << BCDName << "[OffsetInVBase]: " << BCD.Data[1] << '\n'; 404 outs() << BCDName << "[VBPtrOffset]: " << BCD.Data[2] << '\n'; 405 outs() << BCDName << "[OffsetInVBTable]: " << BCD.Data[3] << '\n'; 406 outs() << BCDName << "[Flags]: " << BCD.Data[4] << '\n'; 407 outs() << BCDName << "[ClassHierarchyDescriptor]: " << BCD.Symbols[1] 408 << '\n'; 409 } 410 for (const auto &TDPair : TDs) { 411 StringRef TDName = TDPair.first; 412 const TypeDescriptor &TD = TDPair.second; 413 outs() << TDName << "[VFPtr]: " << TD.Symbols[0] << '\n'; 414 outs() << TDName << "[AlwaysZero]: " << TD.AlwaysZero << '\n'; 415 outs() << TDName << "[MangledName]: "; 416 outs().write_escaped(TD.MangledName.rtrim(StringRef("\0", 1)), 417 /*UseHexEscapes=*/true) 418 << '\n'; 419 } 420 for (const auto &TIPair : TIs) { 421 StringRef TIName = TIPair.first; 422 const ThrowInfo &TI = TIPair.second; 423 auto dumpThrowInfoFlag = [&](const char *Name, uint32_t Flag) { 424 outs() << TIName << "[Flags." << Name 425 << "]: " << (TI.Flags & Flag ? "true" : "false") << '\n'; 426 }; 427 auto dumpThrowInfoSymbol = [&](const char *Name, int Offset) { 428 outs() << TIName << '[' << Name << "]: "; 429 auto Entry = TIEntries.find(std::make_pair(TIName, Offset)); 430 outs() << (Entry == TIEntries.end() ? "null" : Entry->second) << '\n'; 431 }; 432 outs() << TIName << "[Flags]: " << TI.Flags << '\n'; 433 dumpThrowInfoFlag("Const", 1); 434 dumpThrowInfoFlag("Volatile", 2); 435 dumpThrowInfoSymbol("CleanupFn", 4); 436 dumpThrowInfoSymbol("ForwardCompat", 8); 437 dumpThrowInfoSymbol("CatchableTypeArray", 12); 438 } 439 for (const auto &CTAPair : CTAs) { 440 StringRef CTAName = CTAPair.first; 441 const CatchableTypeArray &CTA = CTAPair.second; 442 443 outs() << CTAName << "[NumEntries]: " << CTA.NumEntries << '\n'; 444 445 unsigned Idx = 0; 446 for (auto I = CTAEntries.lower_bound(std::make_pair(CTAName, 0)), 447 E = CTAEntries.upper_bound(std::make_pair(CTAName, UINT64_MAX)); 448 I != E; ++I) 449 outs() << CTAName << '[' << Idx++ << "]: " << I->second << '\n'; 450 } 451 for (const auto &CTPair : CTs) { 452 StringRef CTName = CTPair.first; 453 const CatchableType &CT = CTPair.second; 454 auto dumpCatchableTypeFlag = [&](const char *Name, uint32_t Flag) { 455 outs() << CTName << "[Flags." << Name 456 << "]: " << (CT.Flags & Flag ? "true" : "false") << '\n'; 457 }; 458 outs() << CTName << "[Flags]: " << CT.Flags << '\n'; 459 dumpCatchableTypeFlag("ScalarType", 1); 460 dumpCatchableTypeFlag("VirtualInheritance", 4); 461 outs() << CTName << "[TypeDescriptor]: " << CT.Symbols[0] << '\n'; 462 outs() << CTName << "[NonVirtualBaseAdjustmentOffset]: " 463 << CT.NonVirtualBaseAdjustmentOffset << '\n'; 464 outs() << CTName 465 << "[VirtualBasePointerOffset]: " << CT.VirtualBasePointerOffset 466 << '\n'; 467 outs() << CTName << "[VirtualBaseAdjustmentOffset]: " 468 << CT.VirtualBaseAdjustmentOffset << '\n'; 469 outs() << CTName << "[Size]: " << CT.Size << '\n'; 470 outs() << CTName 471 << "[CopyCtor]: " << (CT.Symbols[1].empty() ? "null" : CT.Symbols[1]) 472 << '\n'; 473 } 474 for (const auto &VTTPair : VTTEntries) { 475 StringRef VTTName = VTTPair.first.first; 476 uint64_t VTTOffset = VTTPair.first.second; 477 StringRef VTTEntry = VTTPair.second; 478 outs() << VTTName << '[' << VTTOffset << "]: " << VTTEntry << '\n'; 479 } 480 for (const auto &TIPair : TINames) { 481 StringRef TIName = TIPair.first; 482 outs() << TIName << ": " << TIPair.second << '\n'; 483 } 484 auto VTableSymI = VTableSymEntries.begin(); 485 auto VTableSymE = VTableSymEntries.end(); 486 auto VTableDataI = VTableDataEntries.begin(); 487 auto VTableDataE = VTableDataEntries.end(); 488 for (;;) { 489 bool SymDone = VTableSymI == VTableSymE; 490 bool DataDone = VTableDataI == VTableDataE; 491 if (SymDone && DataDone) 492 break; 493 if (!SymDone && (DataDone || VTableSymI->first < VTableDataI->first)) { 494 StringRef VTableName = VTableSymI->first.first; 495 uint64_t Offset = VTableSymI->first.second; 496 StringRef VTableEntry = VTableSymI->second; 497 outs() << VTableName << '[' << Offset << "]: "; 498 outs() << VTableEntry; 499 outs() << '\n'; 500 ++VTableSymI; 501 continue; 502 } 503 if (!DataDone && (SymDone || VTableDataI->first < VTableSymI->first)) { 504 StringRef VTableName = VTableDataI->first.first; 505 uint64_t Offset = VTableDataI->first.second; 506 int64_t VTableEntry = VTableDataI->second; 507 outs() << VTableName << '[' << Offset << "]: "; 508 outs() << VTableEntry; 509 outs() << '\n'; 510 ++VTableDataI; 511 continue; 512 } 513 } 514 } 515 516 static void dumpArchive(const Archive *Arc) { 517 for (const Archive::Child &ArcC : Arc->children()) { 518 ErrorOr<std::unique_ptr<Binary>> ChildOrErr = ArcC.getAsBinary(); 519 if (std::error_code EC = ChildOrErr.getError()) { 520 // Ignore non-object files. 521 if (EC != object_error::invalid_file_type) 522 reportError(Arc->getFileName(), EC.message()); 523 continue; 524 } 525 526 if (ObjectFile *Obj = dyn_cast<ObjectFile>(&*ChildOrErr.get())) 527 dumpCXXData(Obj); 528 else 529 reportError(Arc->getFileName(), cxxdump_error::unrecognized_file_format); 530 } 531 } 532 533 static void dumpInput(StringRef File) { 534 // If file isn't stdin, check that it exists. 535 if (File != "-" && !sys::fs::exists(File)) { 536 reportError(File, cxxdump_error::file_not_found); 537 return; 538 } 539 540 // Attempt to open the binary. 541 ErrorOr<OwningBinary<Binary>> BinaryOrErr = createBinary(File); 542 if (std::error_code EC = BinaryOrErr.getError()) { 543 reportError(File, EC); 544 return; 545 } 546 Binary &Binary = *BinaryOrErr.get().getBinary(); 547 548 if (Archive *Arc = dyn_cast<Archive>(&Binary)) 549 dumpArchive(Arc); 550 else if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary)) 551 dumpCXXData(Obj); 552 else 553 reportError(File, cxxdump_error::unrecognized_file_format); 554 } 555 556 int main(int argc, const char *argv[]) { 557 sys::PrintStackTraceOnErrorSignal(); 558 PrettyStackTraceProgram X(argc, argv); 559 llvm_shutdown_obj Y; 560 561 // Initialize targets. 562 llvm::InitializeAllTargetInfos(); 563 564 // Register the target printer for --version. 565 cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion); 566 567 cl::ParseCommandLineOptions(argc, argv, "LLVM C++ ABI Data Dumper\n"); 568 569 // Default to stdin if no filename is specified. 570 if (opts::InputFilenames.size() == 0) 571 opts::InputFilenames.push_back("-"); 572 573 std::for_each(opts::InputFilenames.begin(), opts::InputFilenames.end(), 574 dumpInput); 575 576 return ReturnValue; 577 } 578