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/Support/Debug.h" 20 #include "llvm/Support/Endian.h" 21 #include "llvm/Support/FileSystem.h" 22 #include "llvm/Support/ManagedStatic.h" 23 #include "llvm/Support/PrettyStackTrace.h" 24 #include "llvm/Support/Signals.h" 25 #include "llvm/Support/TargetRegistry.h" 26 #include "llvm/Support/TargetSelect.h" 27 #include "llvm/Support/raw_ostream.h" 28 #include <map> 29 #include <string> 30 #include <system_error> 31 32 using namespace llvm; 33 using namespace llvm::object; 34 using namespace llvm::support; 35 36 namespace opts { 37 cl::list<std::string> InputFilenames(cl::Positional, 38 cl::desc("<input object files>"), 39 cl::ZeroOrMore); 40 } // namespace opts 41 42 static int ReturnValue = EXIT_SUCCESS; 43 44 namespace llvm { 45 46 static bool error(std::error_code EC) { 47 if (!EC) 48 return false; 49 50 ReturnValue = EXIT_FAILURE; 51 outs() << "\nError reading file: " << EC.message() << ".\n"; 52 outs().flush(); 53 return true; 54 } 55 56 } // namespace llvm 57 58 static void reportError(StringRef Input, StringRef Message) { 59 if (Input == "-") 60 Input = "<stdin>"; 61 62 errs() << Input << ": " << Message << "\n"; 63 errs().flush(); 64 ReturnValue = EXIT_FAILURE; 65 } 66 67 static void reportError(StringRef Input, std::error_code EC) { 68 reportError(Input, EC.message()); 69 } 70 71 static SmallVectorImpl<SectionRef> &getRelocSections(const ObjectFile *Obj, 72 const SectionRef &Sec) { 73 static bool MappingDone = false; 74 static std::map<SectionRef, SmallVector<SectionRef, 1>> SectionRelocMap; 75 if (!MappingDone) { 76 for (const SectionRef &Section : Obj->sections()) { 77 section_iterator Sec2 = Section.getRelocatedSection(); 78 if (Sec2 != Obj->section_end()) 79 SectionRelocMap[*Sec2].push_back(Section); 80 } 81 MappingDone = true; 82 } 83 return SectionRelocMap[Sec]; 84 } 85 86 static bool collectRelocatedSymbols(const ObjectFile *Obj, 87 const SectionRef &Sec, uint64_t SecAddress, 88 uint64_t SymAddress, uint64_t SymSize, 89 StringRef *I, StringRef *E) { 90 uint64_t SymOffset = SymAddress - SecAddress; 91 uint64_t SymEnd = SymOffset + SymSize; 92 for (const SectionRef &SR : getRelocSections(Obj, Sec)) { 93 for (const object::RelocationRef &Reloc : SR.relocations()) { 94 if (I == E) 95 break; 96 const object::symbol_iterator RelocSymI = Reloc.getSymbol(); 97 if (RelocSymI == Obj->symbol_end()) 98 continue; 99 StringRef RelocSymName; 100 if (error(RelocSymI->getName(RelocSymName))) 101 return true; 102 uint64_t Offset; 103 if (error(Reloc.getOffset(Offset))) 104 return true; 105 if (Offset >= SymOffset && Offset < SymEnd) { 106 *I = RelocSymName; 107 ++I; 108 } 109 } 110 } 111 return false; 112 } 113 114 static bool collectRelocationOffsets( 115 const ObjectFile *Obj, const SectionRef &Sec, uint64_t SecAddress, 116 uint64_t SymAddress, uint64_t SymSize, StringRef SymName, 117 std::map<std::pair<StringRef, uint64_t>, StringRef> &Collection) { 118 uint64_t SymOffset = SymAddress - SecAddress; 119 uint64_t SymEnd = SymOffset + SymSize; 120 for (const SectionRef &SR : getRelocSections(Obj, Sec)) { 121 for (const object::RelocationRef &Reloc : SR.relocations()) { 122 const object::symbol_iterator RelocSymI = Reloc.getSymbol(); 123 if (RelocSymI == Obj->symbol_end()) 124 continue; 125 StringRef RelocSymName; 126 if (error(RelocSymI->getName(RelocSymName))) 127 return true; 128 uint64_t Offset; 129 if (error(Reloc.getOffset(Offset))) 130 return true; 131 if (Offset >= SymOffset && Offset < SymEnd) 132 Collection[std::make_pair(SymName, Offset - SymOffset)] = RelocSymName; 133 } 134 } 135 return false; 136 } 137 138 static void dumpCXXData(const ObjectFile *Obj) { 139 struct CompleteObjectLocator { 140 StringRef Symbols[2]; 141 ArrayRef<little32_t> Data; 142 }; 143 struct ClassHierarchyDescriptor { 144 StringRef Symbols[1]; 145 ArrayRef<little32_t> Data; 146 }; 147 struct BaseClassDescriptor { 148 StringRef Symbols[2]; 149 ArrayRef<little32_t> Data; 150 }; 151 struct TypeDescriptor { 152 StringRef Symbols[1]; 153 uint64_t AlwaysZero; 154 StringRef MangledName; 155 }; 156 struct ThrowInfo { 157 uint32_t Flags; 158 }; 159 struct CatchableTypeArray { 160 uint32_t NumEntries; 161 }; 162 struct CatchableType { 163 uint32_t Flags; 164 uint32_t NonVirtualBaseAdjustmentOffset; 165 int32_t VirtualBasePointerOffset; 166 uint32_t VirtualBaseAdjustmentOffset; 167 uint32_t Size; 168 StringRef Symbols[2]; 169 }; 170 std::map<std::pair<StringRef, uint64_t>, StringRef> VFTableEntries; 171 std::map<std::pair<StringRef, uint64_t>, StringRef> TIEntries; 172 std::map<std::pair<StringRef, uint64_t>, StringRef> CTAEntries; 173 std::map<StringRef, ArrayRef<little32_t>> VBTables; 174 std::map<StringRef, CompleteObjectLocator> COLs; 175 std::map<StringRef, ClassHierarchyDescriptor> CHDs; 176 std::map<std::pair<StringRef, uint64_t>, StringRef> BCAEntries; 177 std::map<StringRef, BaseClassDescriptor> BCDs; 178 std::map<StringRef, TypeDescriptor> TDs; 179 std::map<StringRef, ThrowInfo> TIs; 180 std::map<StringRef, CatchableTypeArray> CTAs; 181 std::map<StringRef, CatchableType> CTs; 182 183 std::map<std::pair<StringRef, uint64_t>, StringRef> VTableSymEntries; 184 std::map<std::pair<StringRef, uint64_t>, int64_t> VTableDataEntries; 185 std::map<std::pair<StringRef, uint64_t>, StringRef> VTTEntries; 186 std::map<StringRef, StringRef> TINames; 187 188 uint8_t BytesInAddress = Obj->getBytesInAddress(); 189 190 for (const object::SymbolRef &Sym : Obj->symbols()) { 191 StringRef SymName; 192 if (error(Sym.getName(SymName))) 193 return; 194 object::section_iterator SecI(Obj->section_begin()); 195 if (error(Sym.getSection(SecI))) 196 return; 197 // Skip external symbols. 198 if (SecI == Obj->section_end()) 199 continue; 200 const SectionRef &Sec = *SecI; 201 // Skip virtual or BSS sections. 202 if (Sec.isBSS() || Sec.isVirtual()) 203 continue; 204 StringRef SecContents; 205 if (error(Sec.getContents(SecContents))) 206 return; 207 uint64_t SymAddress, SymSize; 208 if (error(Sym.getAddress(SymAddress)) || error(Sym.getSize(SymSize))) 209 return; 210 uint64_t SecAddress = Sec.getAddress(); 211 uint64_t SecSize = Sec.getSize(); 212 uint64_t SymOffset = SymAddress - SecAddress; 213 StringRef SymContents = SecContents.substr(SymOffset, SymSize); 214 215 // VFTables in the MS-ABI start with '??_7' and are contained within their 216 // own COMDAT section. We then determine the contents of the VFTable by 217 // looking at each relocation in the section. 218 if (SymName.startswith("??_7")) { 219 // Each relocation either names a virtual method or a thunk. We note the 220 // offset into the section and the symbol used for the relocation. 221 collectRelocationOffsets(Obj, Sec, SecAddress, SecAddress, SecSize, 222 SymName, VFTableEntries); 223 } 224 // VBTables in the MS-ABI start with '??_8' and are filled with 32-bit 225 // offsets of virtual bases. 226 else if (SymName.startswith("??_8")) { 227 ArrayRef<little32_t> VBTableData( 228 reinterpret_cast<const little32_t *>(SymContents.data()), 229 SymContents.size() / sizeof(little32_t)); 230 VBTables[SymName] = VBTableData; 231 } 232 // Complete object locators in the MS-ABI start with '??_R4' 233 else if (SymName.startswith("??_R4")) { 234 CompleteObjectLocator COL; 235 COL.Data = ArrayRef<little32_t>( 236 reinterpret_cast<const little32_t *>(SymContents.data()), 3); 237 StringRef *I = std::begin(COL.Symbols), *E = std::end(COL.Symbols); 238 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 239 E)) 240 return; 241 COLs[SymName] = COL; 242 } 243 // Class hierarchy descriptors in the MS-ABI start with '??_R3' 244 else if (SymName.startswith("??_R3")) { 245 ClassHierarchyDescriptor CHD; 246 CHD.Data = ArrayRef<little32_t>( 247 reinterpret_cast<const little32_t *>(SymContents.data()), 3); 248 StringRef *I = std::begin(CHD.Symbols), *E = std::end(CHD.Symbols); 249 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 250 E)) 251 return; 252 CHDs[SymName] = CHD; 253 } 254 // Class hierarchy descriptors in the MS-ABI start with '??_R2' 255 else if (SymName.startswith("??_R2")) { 256 // Each relocation names a base class descriptor. We note the offset into 257 // the section and the symbol used for the relocation. 258 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 259 SymName, BCAEntries); 260 } 261 // Base class descriptors in the MS-ABI start with '??_R1' 262 else if (SymName.startswith("??_R1")) { 263 BaseClassDescriptor BCD; 264 BCD.Data = ArrayRef<little32_t>( 265 reinterpret_cast<const little32_t *>(SymContents.data()) + 1, 5); 266 StringRef *I = std::begin(BCD.Symbols), *E = std::end(BCD.Symbols); 267 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 268 E)) 269 return; 270 BCDs[SymName] = BCD; 271 } 272 // Type descriptors in the MS-ABI start with '??_R0' 273 else if (SymName.startswith("??_R0")) { 274 const char *DataPtr = SymContents.drop_front(BytesInAddress).data(); 275 TypeDescriptor TD; 276 if (BytesInAddress == 8) 277 TD.AlwaysZero = *reinterpret_cast<const little64_t *>(DataPtr); 278 else 279 TD.AlwaysZero = *reinterpret_cast<const little32_t *>(DataPtr); 280 TD.MangledName = SymContents.drop_front(BytesInAddress * 2); 281 StringRef *I = std::begin(TD.Symbols), *E = std::end(TD.Symbols); 282 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 283 E)) 284 return; 285 TDs[SymName] = TD; 286 } 287 // Throw descriptors in the MS-ABI start with '_TI' 288 else if (SymName.startswith("_TI") || SymName.startswith("__TI")) { 289 ThrowInfo TI; 290 TI.Flags = *reinterpret_cast<const little32_t *>(SymContents.data()); 291 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 292 SymName, TIEntries); 293 TIs[SymName] = TI; 294 } 295 // Catchable type arrays in the MS-ABI start with _CTA or __CTA. 296 else if (SymName.startswith("_CTA") || SymName.startswith("__CTA")) { 297 CatchableTypeArray CTA; 298 CTA.NumEntries = 299 *reinterpret_cast<const little32_t *>(SymContents.data()); 300 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 301 SymName, CTAEntries); 302 CTAs[SymName] = CTA; 303 } 304 // Catchable types in the MS-ABI start with _CT or __CT. 305 else if (SymName.startswith("_CT") || SymName.startswith("__CT")) { 306 const little32_t *DataPtr = 307 reinterpret_cast<const little32_t *>(SymContents.data()); 308 CatchableType CT; 309 CT.Flags = DataPtr[0]; 310 CT.NonVirtualBaseAdjustmentOffset = DataPtr[2]; 311 CT.VirtualBasePointerOffset = DataPtr[3]; 312 CT.VirtualBaseAdjustmentOffset = DataPtr[4]; 313 CT.Size = DataPtr[5]; 314 StringRef *I = std::begin(CT.Symbols), *E = std::end(CT.Symbols); 315 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 316 E)) 317 return; 318 CTs[SymName] = CT; 319 } 320 // Construction vtables in the Itanium ABI start with '_ZTT' or '__ZTT'. 321 else if (SymName.startswith("_ZTT") || SymName.startswith("__ZTT")) { 322 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 323 SymName, VTTEntries); 324 } 325 // Typeinfo names in the Itanium ABI start with '_ZTS' or '__ZTS'. 326 else if (SymName.startswith("_ZTS") || SymName.startswith("__ZTS")) { 327 TINames[SymName] = SymContents.slice(0, SymContents.find('\0')); 328 } 329 // Vtables in the Itanium ABI start with '_ZTV' or '__ZTV'. 330 else if (SymName.startswith("_ZTV") || SymName.startswith("__ZTV")) { 331 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 332 SymName, VTableSymEntries); 333 for (uint64_t SymOffI = 0; SymOffI < SymSize; SymOffI += BytesInAddress) { 334 auto Key = std::make_pair(SymName, SymOffI); 335 if (VTableSymEntries.count(Key)) 336 continue; 337 const char *DataPtr = 338 SymContents.substr(SymOffI, BytesInAddress).data(); 339 int64_t VData; 340 if (BytesInAddress == 8) 341 VData = *reinterpret_cast<const little64_t *>(DataPtr); 342 else 343 VData = *reinterpret_cast<const little32_t *>(DataPtr); 344 VTableDataEntries[Key] = VData; 345 } 346 } 347 // Typeinfo structures in the Itanium ABI start with '_ZTI' or '__ZTI'. 348 else if (SymName.startswith("_ZTI") || SymName.startswith("__ZTI")) { 349 // FIXME: Do something with these! 350 } 351 } 352 for (const auto &VFTableEntry : VFTableEntries) { 353 StringRef VFTableName = VFTableEntry.first.first; 354 uint64_t Offset = VFTableEntry.first.second; 355 StringRef SymName = VFTableEntry.second; 356 outs() << VFTableName << '[' << Offset << "]: " << SymName << '\n'; 357 } 358 for (const std::pair<StringRef, ArrayRef<little32_t>> &VBTable : VBTables) { 359 StringRef VBTableName = VBTable.first; 360 uint32_t Idx = 0; 361 for (little32_t Offset : VBTable.second) { 362 outs() << VBTableName << '[' << Idx << "]: " << Offset << '\n'; 363 Idx += sizeof(Offset); 364 } 365 } 366 for (const std::pair<StringRef, CompleteObjectLocator> &COLPair : COLs) { 367 StringRef COLName = COLPair.first; 368 const CompleteObjectLocator &COL = COLPair.second; 369 outs() << COLName << "[IsImageRelative]: " << COL.Data[0] << '\n'; 370 outs() << COLName << "[OffsetToTop]: " << COL.Data[1] << '\n'; 371 outs() << COLName << "[VFPtrOffset]: " << COL.Data[2] << '\n'; 372 outs() << COLName << "[TypeDescriptor]: " << COL.Symbols[0] << '\n'; 373 outs() << COLName << "[ClassHierarchyDescriptor]: " << COL.Symbols[1] 374 << '\n'; 375 } 376 for (const std::pair<StringRef, ClassHierarchyDescriptor> &CHDPair : CHDs) { 377 StringRef CHDName = CHDPair.first; 378 const ClassHierarchyDescriptor &CHD = CHDPair.second; 379 outs() << CHDName << "[AlwaysZero]: " << CHD.Data[0] << '\n'; 380 outs() << CHDName << "[Flags]: " << CHD.Data[1] << '\n'; 381 outs() << CHDName << "[NumClasses]: " << CHD.Data[2] << '\n'; 382 outs() << CHDName << "[BaseClassArray]: " << CHD.Symbols[0] << '\n'; 383 } 384 for (const std::pair<std::pair<StringRef, uint64_t>, StringRef> &BCAEntry : 385 BCAEntries) { 386 StringRef BCAName = BCAEntry.first.first; 387 uint64_t Offset = BCAEntry.first.second; 388 StringRef SymName = BCAEntry.second; 389 outs() << BCAName << '[' << Offset << "]: " << SymName << '\n'; 390 } 391 for (const std::pair<StringRef, BaseClassDescriptor> &BCDPair : BCDs) { 392 StringRef BCDName = BCDPair.first; 393 const BaseClassDescriptor &BCD = BCDPair.second; 394 outs() << BCDName << "[TypeDescriptor]: " << BCD.Symbols[0] << '\n'; 395 outs() << BCDName << "[NumBases]: " << BCD.Data[0] << '\n'; 396 outs() << BCDName << "[OffsetInVBase]: " << BCD.Data[1] << '\n'; 397 outs() << BCDName << "[VBPtrOffset]: " << BCD.Data[2] << '\n'; 398 outs() << BCDName << "[OffsetInVBTable]: " << BCD.Data[3] << '\n'; 399 outs() << BCDName << "[Flags]: " << BCD.Data[4] << '\n'; 400 outs() << BCDName << "[ClassHierarchyDescriptor]: " << BCD.Symbols[1] 401 << '\n'; 402 } 403 for (const std::pair<StringRef, TypeDescriptor> &TDPair : TDs) { 404 StringRef TDName = TDPair.first; 405 const TypeDescriptor &TD = TDPair.second; 406 outs() << TDName << "[VFPtr]: " << TD.Symbols[0] << '\n'; 407 outs() << TDName << "[AlwaysZero]: " << TD.AlwaysZero << '\n'; 408 outs() << TDName << "[MangledName]: "; 409 outs().write_escaped(TD.MangledName.rtrim(StringRef("\0", 1)), 410 /*UseHexEscapes=*/true) 411 << '\n'; 412 } 413 for (const std::pair<StringRef, ThrowInfo> &TIPair : TIs) { 414 StringRef TIName = TIPair.first; 415 const ThrowInfo &TI = TIPair.second; 416 auto dumpThrowInfoFlag = [&](const char *Name, uint32_t Flag) { 417 outs() << TIName << "[Flags." << Name 418 << "]: " << (TI.Flags & Flag ? "true" : "false") << '\n'; 419 }; 420 auto dumpThrowInfoSymbol = [&](const char *Name, int Offset) { 421 outs() << TIName << '[' << Name << "]: "; 422 auto Entry = TIEntries.find(std::make_pair(TIName, Offset)); 423 outs() << (Entry == TIEntries.end() ? "null" : Entry->second) << '\n'; 424 }; 425 outs() << TIName << "[Flags]: " << TI.Flags << '\n'; 426 dumpThrowInfoFlag("Const", 1); 427 dumpThrowInfoFlag("Volatile", 2); 428 dumpThrowInfoSymbol("CleanupFn", 4); 429 dumpThrowInfoSymbol("ForwardCompat", 8); 430 dumpThrowInfoSymbol("CatchableTypeArray", 12); 431 } 432 for (const std::pair<StringRef, CatchableTypeArray> &CTAPair : CTAs) { 433 StringRef CTAName = CTAPair.first; 434 const CatchableTypeArray &CTA = CTAPair.second; 435 436 outs() << CTAName << "[NumEntries]: " << CTA.NumEntries << '\n'; 437 438 unsigned Idx = 0; 439 for (auto I = CTAEntries.lower_bound(std::make_pair(CTAName, 0)), 440 E = CTAEntries.upper_bound(std::make_pair(CTAName, UINT64_MAX)); 441 I != E; ++I) 442 outs() << CTAName << '[' << Idx++ << "]: " << I->second << '\n'; 443 } 444 for (const std::pair<StringRef, CatchableType> &CTPair : CTs) { 445 StringRef CTName = CTPair.first; 446 const CatchableType &CT = CTPair.second; 447 auto dumpCatchableTypeFlag = [&](const char *Name, uint32_t Flag) { 448 outs() << CTName << "[Flags." << Name 449 << "]: " << (CT.Flags & Flag ? "true" : "false") << '\n'; 450 }; 451 outs() << CTName << "[Flags]: " << CT.Flags << '\n'; 452 dumpCatchableTypeFlag("ScalarType", 1); 453 dumpCatchableTypeFlag("VirtualInheritance", 4); 454 outs() << CTName << "[TypeDescriptor]: " << CT.Symbols[0] << '\n'; 455 outs() << CTName << "[NonVirtualBaseAdjustmentOffset]: " 456 << CT.NonVirtualBaseAdjustmentOffset << '\n'; 457 outs() << CTName 458 << "[VirtualBasePointerOffset]: " << CT.VirtualBasePointerOffset 459 << '\n'; 460 outs() << CTName << "[VirtualBaseAdjustmentOffset]: " 461 << CT.VirtualBaseAdjustmentOffset << '\n'; 462 outs() << CTName << "[Size]: " << CT.Size << '\n'; 463 outs() << CTName 464 << "[CopyCtor]: " << (CT.Symbols[1].empty() ? "null" : CT.Symbols[1]) 465 << '\n'; 466 } 467 for (const std::pair<std::pair<StringRef, uint64_t>, StringRef> &VTTPair : 468 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 std::pair<StringRef, StringRef> &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