1 //===- llvm-cxxdump.cpp - Dump C++ data in an Object File -------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // Dumps C++ data resident in object files and archives. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "llvm-cxxdump.h" 14 #include "Error.h" 15 #include "llvm/ADT/ArrayRef.h" 16 #include "llvm/Object/Archive.h" 17 #include "llvm/Object/ObjectFile.h" 18 #include "llvm/Object/SymbolSize.h" 19 #include "llvm/Support/Debug.h" 20 #include "llvm/Support/Endian.h" 21 #include "llvm/Support/FileSystem.h" 22 #include "llvm/Support/InitLLVM.h" 23 #include "llvm/Support/TargetRegistry.h" 24 #include "llvm/Support/TargetSelect.h" 25 #include "llvm/Support/WithColor.h" 26 #include "llvm/Support/raw_ostream.h" 27 #include <map> 28 #include <string> 29 #include <system_error> 30 31 using namespace llvm; 32 using namespace llvm::object; 33 using namespace llvm::support; 34 35 namespace opts { 36 cl::list<std::string> InputFilenames(cl::Positional, 37 cl::desc("<input object files>"), 38 cl::ZeroOrMore); 39 } // namespace opts 40 41 namespace llvm { 42 43 static void error(std::error_code EC) { 44 if (!EC) 45 return; 46 WithColor::error(outs(), "") << "reading file: " << EC.message() << ".\n"; 47 outs().flush(); 48 exit(1); 49 } 50 51 static void error(Error Err) { 52 if (!Err) 53 return; 54 logAllUnhandledErrors(std::move(Err), WithColor::error(outs()), 55 "reading file: "); 56 outs().flush(); 57 exit(1); 58 } 59 60 } // namespace llvm 61 62 static void reportError(StringRef Input, StringRef Message) { 63 if (Input == "-") 64 Input = "<stdin>"; 65 WithColor::error(errs(), Input) << Message << "\n"; 66 errs().flush(); 67 exit(1); 68 } 69 70 static void reportError(StringRef Input, std::error_code EC) { 71 reportError(Input, EC.message()); 72 } 73 74 static std::map<SectionRef, SmallVector<SectionRef, 1>> SectionRelocMap; 75 76 static void collectRelocatedSymbols(const ObjectFile *Obj, 77 const SectionRef &Sec, uint64_t SecAddress, 78 uint64_t SymAddress, uint64_t SymSize, 79 StringRef *I, StringRef *E) { 80 uint64_t SymOffset = SymAddress - SecAddress; 81 uint64_t SymEnd = SymOffset + SymSize; 82 for (const SectionRef &SR : SectionRelocMap[Sec]) { 83 for (const object::RelocationRef &Reloc : SR.relocations()) { 84 if (I == E) 85 break; 86 const object::symbol_iterator RelocSymI = Reloc.getSymbol(); 87 if (RelocSymI == Obj->symbol_end()) 88 continue; 89 Expected<StringRef> RelocSymName = RelocSymI->getName(); 90 error(errorToErrorCode(RelocSymName.takeError())); 91 uint64_t Offset = Reloc.getOffset(); 92 if (Offset >= SymOffset && Offset < SymEnd) { 93 *I = *RelocSymName; 94 ++I; 95 } 96 } 97 } 98 } 99 100 static void collectRelocationOffsets( 101 const ObjectFile *Obj, const SectionRef &Sec, uint64_t SecAddress, 102 uint64_t SymAddress, uint64_t SymSize, StringRef SymName, 103 std::map<std::pair<StringRef, uint64_t>, StringRef> &Collection) { 104 uint64_t SymOffset = SymAddress - SecAddress; 105 uint64_t SymEnd = SymOffset + SymSize; 106 for (const SectionRef &SR : SectionRelocMap[Sec]) { 107 for (const object::RelocationRef &Reloc : SR.relocations()) { 108 const object::symbol_iterator RelocSymI = Reloc.getSymbol(); 109 if (RelocSymI == Obj->symbol_end()) 110 continue; 111 Expected<StringRef> RelocSymName = RelocSymI->getName(); 112 error(errorToErrorCode(RelocSymName.takeError())); 113 uint64_t Offset = Reloc.getOffset(); 114 if (Offset >= SymOffset && Offset < SymEnd) 115 Collection[std::make_pair(SymName, Offset - SymOffset)] = *RelocSymName; 116 } 117 } 118 } 119 120 static void dumpCXXData(const ObjectFile *Obj) { 121 struct CompleteObjectLocator { 122 StringRef Symbols[2]; 123 ArrayRef<little32_t> Data; 124 }; 125 struct ClassHierarchyDescriptor { 126 StringRef Symbols[1]; 127 ArrayRef<little32_t> Data; 128 }; 129 struct BaseClassDescriptor { 130 StringRef Symbols[2]; 131 ArrayRef<little32_t> Data; 132 }; 133 struct TypeDescriptor { 134 StringRef Symbols[1]; 135 uint64_t AlwaysZero; 136 StringRef MangledName; 137 }; 138 struct ThrowInfo { 139 uint32_t Flags; 140 }; 141 struct CatchableTypeArray { 142 uint32_t NumEntries; 143 }; 144 struct CatchableType { 145 uint32_t Flags; 146 uint32_t NonVirtualBaseAdjustmentOffset; 147 int32_t VirtualBasePointerOffset; 148 uint32_t VirtualBaseAdjustmentOffset; 149 uint32_t Size; 150 StringRef Symbols[2]; 151 }; 152 std::map<std::pair<StringRef, uint64_t>, StringRef> VFTableEntries; 153 std::map<std::pair<StringRef, uint64_t>, StringRef> TIEntries; 154 std::map<std::pair<StringRef, uint64_t>, StringRef> CTAEntries; 155 std::map<StringRef, ArrayRef<little32_t>> VBTables; 156 std::map<StringRef, CompleteObjectLocator> COLs; 157 std::map<StringRef, ClassHierarchyDescriptor> CHDs; 158 std::map<std::pair<StringRef, uint64_t>, StringRef> BCAEntries; 159 std::map<StringRef, BaseClassDescriptor> BCDs; 160 std::map<StringRef, TypeDescriptor> TDs; 161 std::map<StringRef, ThrowInfo> TIs; 162 std::map<StringRef, CatchableTypeArray> CTAs; 163 std::map<StringRef, CatchableType> CTs; 164 165 std::map<std::pair<StringRef, uint64_t>, StringRef> VTableSymEntries; 166 std::map<std::pair<StringRef, uint64_t>, int64_t> VTableDataEntries; 167 std::map<std::pair<StringRef, uint64_t>, StringRef> VTTEntries; 168 std::map<StringRef, StringRef> TINames; 169 170 SectionRelocMap.clear(); 171 for (const SectionRef &Section : Obj->sections()) { 172 section_iterator Sec2 = Section.getRelocatedSection(); 173 if (Sec2 != Obj->section_end()) 174 SectionRelocMap[*Sec2].push_back(Section); 175 } 176 177 uint8_t BytesInAddress = Obj->getBytesInAddress(); 178 179 std::vector<std::pair<SymbolRef, uint64_t>> SymAddr = 180 object::computeSymbolSizes(*Obj); 181 182 for (auto &P : SymAddr) { 183 object::SymbolRef Sym = P.first; 184 uint64_t SymSize = P.second; 185 Expected<StringRef> SymNameOrErr = Sym.getName(); 186 error(errorToErrorCode(SymNameOrErr.takeError())); 187 StringRef SymName = *SymNameOrErr; 188 Expected<object::section_iterator> SecIOrErr = Sym.getSection(); 189 error(errorToErrorCode(SecIOrErr.takeError())); 190 object::section_iterator SecI = *SecIOrErr; 191 // Skip external symbols. 192 if (SecI == Obj->section_end()) 193 continue; 194 const SectionRef &Sec = *SecI; 195 // Skip virtual or BSS sections. 196 if (Sec.isBSS() || Sec.isVirtual()) 197 continue; 198 StringRef SecContents; 199 error(Sec.getContents(SecContents)); 200 Expected<uint64_t> SymAddressOrErr = Sym.getAddress(); 201 error(errorToErrorCode(SymAddressOrErr.takeError())); 202 uint64_t SymAddress = *SymAddressOrErr; 203 uint64_t SecAddress = Sec.getAddress(); 204 uint64_t SecSize = Sec.getSize(); 205 uint64_t SymOffset = SymAddress - SecAddress; 206 StringRef SymContents = SecContents.substr(SymOffset, SymSize); 207 208 // VFTables in the MS-ABI start with '??_7' and are contained within their 209 // own COMDAT section. We then determine the contents of the VFTable by 210 // looking at each relocation in the section. 211 if (SymName.startswith("??_7")) { 212 // Each relocation either names a virtual method or a thunk. We note the 213 // offset into the section and the symbol used for the relocation. 214 collectRelocationOffsets(Obj, Sec, SecAddress, SecAddress, SecSize, 215 SymName, VFTableEntries); 216 } 217 // VBTables in the MS-ABI start with '??_8' and are filled with 32-bit 218 // offsets of virtual bases. 219 else if (SymName.startswith("??_8")) { 220 ArrayRef<little32_t> VBTableData( 221 reinterpret_cast<const little32_t *>(SymContents.data()), 222 SymContents.size() / sizeof(little32_t)); 223 VBTables[SymName] = VBTableData; 224 } 225 // Complete object locators in the MS-ABI start with '??_R4' 226 else if (SymName.startswith("??_R4")) { 227 CompleteObjectLocator COL; 228 COL.Data = makeArrayRef( 229 reinterpret_cast<const little32_t *>(SymContents.data()), 3); 230 StringRef *I = std::begin(COL.Symbols), *E = std::end(COL.Symbols); 231 collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E); 232 COLs[SymName] = COL; 233 } 234 // Class hierarchy descriptors in the MS-ABI start with '??_R3' 235 else if (SymName.startswith("??_R3")) { 236 ClassHierarchyDescriptor CHD; 237 CHD.Data = makeArrayRef( 238 reinterpret_cast<const little32_t *>(SymContents.data()), 3); 239 StringRef *I = std::begin(CHD.Symbols), *E = std::end(CHD.Symbols); 240 collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E); 241 CHDs[SymName] = CHD; 242 } 243 // Class hierarchy descriptors in the MS-ABI start with '??_R2' 244 else if (SymName.startswith("??_R2")) { 245 // Each relocation names a base class descriptor. We note the offset into 246 // the section and the symbol used for the relocation. 247 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 248 SymName, BCAEntries); 249 } 250 // Base class descriptors in the MS-ABI start with '??_R1' 251 else if (SymName.startswith("??_R1")) { 252 BaseClassDescriptor BCD; 253 BCD.Data = makeArrayRef( 254 reinterpret_cast<const little32_t *>(SymContents.data()) + 1, 5); 255 StringRef *I = std::begin(BCD.Symbols), *E = std::end(BCD.Symbols); 256 collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E); 257 BCDs[SymName] = BCD; 258 } 259 // Type descriptors in the MS-ABI start with '??_R0' 260 else if (SymName.startswith("??_R0")) { 261 const char *DataPtr = SymContents.drop_front(BytesInAddress).data(); 262 TypeDescriptor TD; 263 if (BytesInAddress == 8) 264 TD.AlwaysZero = *reinterpret_cast<const little64_t *>(DataPtr); 265 else 266 TD.AlwaysZero = *reinterpret_cast<const little32_t *>(DataPtr); 267 TD.MangledName = SymContents.drop_front(BytesInAddress * 2); 268 StringRef *I = std::begin(TD.Symbols), *E = std::end(TD.Symbols); 269 collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E); 270 TDs[SymName] = TD; 271 } 272 // Throw descriptors in the MS-ABI start with '_TI' 273 else if (SymName.startswith("_TI") || SymName.startswith("__TI")) { 274 ThrowInfo TI; 275 TI.Flags = *reinterpret_cast<const little32_t *>(SymContents.data()); 276 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 277 SymName, TIEntries); 278 TIs[SymName] = TI; 279 } 280 // Catchable type arrays in the MS-ABI start with _CTA or __CTA. 281 else if (SymName.startswith("_CTA") || SymName.startswith("__CTA")) { 282 CatchableTypeArray CTA; 283 CTA.NumEntries = 284 *reinterpret_cast<const little32_t *>(SymContents.data()); 285 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 286 SymName, CTAEntries); 287 CTAs[SymName] = CTA; 288 } 289 // Catchable types in the MS-ABI start with _CT or __CT. 290 else if (SymName.startswith("_CT") || SymName.startswith("__CT")) { 291 const little32_t *DataPtr = 292 reinterpret_cast<const little32_t *>(SymContents.data()); 293 CatchableType CT; 294 CT.Flags = DataPtr[0]; 295 CT.NonVirtualBaseAdjustmentOffset = DataPtr[2]; 296 CT.VirtualBasePointerOffset = DataPtr[3]; 297 CT.VirtualBaseAdjustmentOffset = DataPtr[4]; 298 CT.Size = DataPtr[5]; 299 StringRef *I = std::begin(CT.Symbols), *E = std::end(CT.Symbols); 300 collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E); 301 CTs[SymName] = CT; 302 } 303 // Construction vtables in the Itanium ABI start with '_ZTT' or '__ZTT'. 304 else if (SymName.startswith("_ZTT") || SymName.startswith("__ZTT")) { 305 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 306 SymName, VTTEntries); 307 } 308 // Typeinfo names in the Itanium ABI start with '_ZTS' or '__ZTS'. 309 else if (SymName.startswith("_ZTS") || SymName.startswith("__ZTS")) { 310 TINames[SymName] = SymContents.slice(0, SymContents.find('\0')); 311 } 312 // Vtables in the Itanium ABI start with '_ZTV' or '__ZTV'. 313 else if (SymName.startswith("_ZTV") || SymName.startswith("__ZTV")) { 314 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 315 SymName, VTableSymEntries); 316 for (uint64_t SymOffI = 0; SymOffI < SymSize; SymOffI += BytesInAddress) { 317 auto Key = std::make_pair(SymName, SymOffI); 318 if (VTableSymEntries.count(Key)) 319 continue; 320 const char *DataPtr = 321 SymContents.substr(SymOffI, BytesInAddress).data(); 322 int64_t VData; 323 if (BytesInAddress == 8) 324 VData = *reinterpret_cast<const little64_t *>(DataPtr); 325 else 326 VData = *reinterpret_cast<const little32_t *>(DataPtr); 327 VTableDataEntries[Key] = VData; 328 } 329 } 330 // Typeinfo structures in the Itanium ABI start with '_ZTI' or '__ZTI'. 331 else if (SymName.startswith("_ZTI") || SymName.startswith("__ZTI")) { 332 // FIXME: Do something with these! 333 } 334 } 335 for (const auto &VFTableEntry : VFTableEntries) { 336 StringRef VFTableName = VFTableEntry.first.first; 337 uint64_t Offset = VFTableEntry.first.second; 338 StringRef SymName = VFTableEntry.second; 339 outs() << VFTableName << '[' << Offset << "]: " << SymName << '\n'; 340 } 341 for (const auto &VBTable : VBTables) { 342 StringRef VBTableName = VBTable.first; 343 uint32_t Idx = 0; 344 for (little32_t Offset : VBTable.second) { 345 outs() << VBTableName << '[' << Idx << "]: " << Offset << '\n'; 346 Idx += sizeof(Offset); 347 } 348 } 349 for (const auto &COLPair : COLs) { 350 StringRef COLName = COLPair.first; 351 const CompleteObjectLocator &COL = COLPair.second; 352 outs() << COLName << "[IsImageRelative]: " << COL.Data[0] << '\n'; 353 outs() << COLName << "[OffsetToTop]: " << COL.Data[1] << '\n'; 354 outs() << COLName << "[VFPtrOffset]: " << COL.Data[2] << '\n'; 355 outs() << COLName << "[TypeDescriptor]: " << COL.Symbols[0] << '\n'; 356 outs() << COLName << "[ClassHierarchyDescriptor]: " << COL.Symbols[1] 357 << '\n'; 358 } 359 for (const auto &CHDPair : CHDs) { 360 StringRef CHDName = CHDPair.first; 361 const ClassHierarchyDescriptor &CHD = CHDPair.second; 362 outs() << CHDName << "[AlwaysZero]: " << CHD.Data[0] << '\n'; 363 outs() << CHDName << "[Flags]: " << CHD.Data[1] << '\n'; 364 outs() << CHDName << "[NumClasses]: " << CHD.Data[2] << '\n'; 365 outs() << CHDName << "[BaseClassArray]: " << CHD.Symbols[0] << '\n'; 366 } 367 for (const auto &BCAEntry : BCAEntries) { 368 StringRef BCAName = BCAEntry.first.first; 369 uint64_t Offset = BCAEntry.first.second; 370 StringRef SymName = BCAEntry.second; 371 outs() << BCAName << '[' << Offset << "]: " << SymName << '\n'; 372 } 373 for (const auto &BCDPair : BCDs) { 374 StringRef BCDName = BCDPair.first; 375 const BaseClassDescriptor &BCD = BCDPair.second; 376 outs() << BCDName << "[TypeDescriptor]: " << BCD.Symbols[0] << '\n'; 377 outs() << BCDName << "[NumBases]: " << BCD.Data[0] << '\n'; 378 outs() << BCDName << "[OffsetInVBase]: " << BCD.Data[1] << '\n'; 379 outs() << BCDName << "[VBPtrOffset]: " << BCD.Data[2] << '\n'; 380 outs() << BCDName << "[OffsetInVBTable]: " << BCD.Data[3] << '\n'; 381 outs() << BCDName << "[Flags]: " << BCD.Data[4] << '\n'; 382 outs() << BCDName << "[ClassHierarchyDescriptor]: " << BCD.Symbols[1] 383 << '\n'; 384 } 385 for (const auto &TDPair : TDs) { 386 StringRef TDName = TDPair.first; 387 const TypeDescriptor &TD = TDPair.second; 388 outs() << TDName << "[VFPtr]: " << TD.Symbols[0] << '\n'; 389 outs() << TDName << "[AlwaysZero]: " << TD.AlwaysZero << '\n'; 390 outs() << TDName << "[MangledName]: "; 391 outs().write_escaped(TD.MangledName.rtrim(StringRef("\0", 1)), 392 /*UseHexEscapes=*/true) 393 << '\n'; 394 } 395 for (const auto &TIPair : TIs) { 396 StringRef TIName = TIPair.first; 397 const ThrowInfo &TI = TIPair.second; 398 auto dumpThrowInfoFlag = [&](const char *Name, uint32_t Flag) { 399 outs() << TIName << "[Flags." << Name 400 << "]: " << (TI.Flags & Flag ? "true" : "false") << '\n'; 401 }; 402 auto dumpThrowInfoSymbol = [&](const char *Name, int Offset) { 403 outs() << TIName << '[' << Name << "]: "; 404 auto Entry = TIEntries.find(std::make_pair(TIName, Offset)); 405 outs() << (Entry == TIEntries.end() ? "null" : Entry->second) << '\n'; 406 }; 407 outs() << TIName << "[Flags]: " << TI.Flags << '\n'; 408 dumpThrowInfoFlag("Const", 1); 409 dumpThrowInfoFlag("Volatile", 2); 410 dumpThrowInfoSymbol("CleanupFn", 4); 411 dumpThrowInfoSymbol("ForwardCompat", 8); 412 dumpThrowInfoSymbol("CatchableTypeArray", 12); 413 } 414 for (const auto &CTAPair : CTAs) { 415 StringRef CTAName = CTAPair.first; 416 const CatchableTypeArray &CTA = CTAPair.second; 417 418 outs() << CTAName << "[NumEntries]: " << CTA.NumEntries << '\n'; 419 420 unsigned Idx = 0; 421 for (auto I = CTAEntries.lower_bound(std::make_pair(CTAName, 0)), 422 E = CTAEntries.upper_bound(std::make_pair(CTAName, UINT64_MAX)); 423 I != E; ++I) 424 outs() << CTAName << '[' << Idx++ << "]: " << I->second << '\n'; 425 } 426 for (const auto &CTPair : CTs) { 427 StringRef CTName = CTPair.first; 428 const CatchableType &CT = CTPair.second; 429 auto dumpCatchableTypeFlag = [&](const char *Name, uint32_t Flag) { 430 outs() << CTName << "[Flags." << Name 431 << "]: " << (CT.Flags & Flag ? "true" : "false") << '\n'; 432 }; 433 outs() << CTName << "[Flags]: " << CT.Flags << '\n'; 434 dumpCatchableTypeFlag("ScalarType", 1); 435 dumpCatchableTypeFlag("VirtualInheritance", 4); 436 outs() << CTName << "[TypeDescriptor]: " << CT.Symbols[0] << '\n'; 437 outs() << CTName << "[NonVirtualBaseAdjustmentOffset]: " 438 << CT.NonVirtualBaseAdjustmentOffset << '\n'; 439 outs() << CTName 440 << "[VirtualBasePointerOffset]: " << CT.VirtualBasePointerOffset 441 << '\n'; 442 outs() << CTName << "[VirtualBaseAdjustmentOffset]: " 443 << CT.VirtualBaseAdjustmentOffset << '\n'; 444 outs() << CTName << "[Size]: " << CT.Size << '\n'; 445 outs() << CTName 446 << "[CopyCtor]: " << (CT.Symbols[1].empty() ? "null" : CT.Symbols[1]) 447 << '\n'; 448 } 449 for (const auto &VTTPair : VTTEntries) { 450 StringRef VTTName = VTTPair.first.first; 451 uint64_t VTTOffset = VTTPair.first.second; 452 StringRef VTTEntry = VTTPair.second; 453 outs() << VTTName << '[' << VTTOffset << "]: " << VTTEntry << '\n'; 454 } 455 for (const auto &TIPair : TINames) { 456 StringRef TIName = TIPair.first; 457 outs() << TIName << ": " << TIPair.second << '\n'; 458 } 459 auto VTableSymI = VTableSymEntries.begin(); 460 auto VTableSymE = VTableSymEntries.end(); 461 auto VTableDataI = VTableDataEntries.begin(); 462 auto VTableDataE = VTableDataEntries.end(); 463 for (;;) { 464 bool SymDone = VTableSymI == VTableSymE; 465 bool DataDone = VTableDataI == VTableDataE; 466 if (SymDone && DataDone) 467 break; 468 if (!SymDone && (DataDone || VTableSymI->first < VTableDataI->first)) { 469 StringRef VTableName = VTableSymI->first.first; 470 uint64_t Offset = VTableSymI->first.second; 471 StringRef VTableEntry = VTableSymI->second; 472 outs() << VTableName << '[' << Offset << "]: "; 473 outs() << VTableEntry; 474 outs() << '\n'; 475 ++VTableSymI; 476 continue; 477 } 478 if (!DataDone && (SymDone || VTableDataI->first < VTableSymI->first)) { 479 StringRef VTableName = VTableDataI->first.first; 480 uint64_t Offset = VTableDataI->first.second; 481 int64_t VTableEntry = VTableDataI->second; 482 outs() << VTableName << '[' << Offset << "]: "; 483 outs() << VTableEntry; 484 outs() << '\n'; 485 ++VTableDataI; 486 continue; 487 } 488 } 489 } 490 491 static void dumpArchive(const Archive *Arc) { 492 Error Err = Error::success(); 493 for (auto &ArcC : Arc->children(Err)) { 494 Expected<std::unique_ptr<Binary>> ChildOrErr = ArcC.getAsBinary(); 495 if (!ChildOrErr) { 496 // Ignore non-object files. 497 if (auto E = isNotObjectErrorInvalidFileType(ChildOrErr.takeError())) { 498 std::string Buf; 499 raw_string_ostream OS(Buf); 500 logAllUnhandledErrors(std::move(E), OS); 501 OS.flush(); 502 reportError(Arc->getFileName(), Buf); 503 } 504 consumeError(ChildOrErr.takeError()); 505 continue; 506 } 507 508 if (ObjectFile *Obj = dyn_cast<ObjectFile>(&*ChildOrErr.get())) 509 dumpCXXData(Obj); 510 else 511 reportError(Arc->getFileName(), cxxdump_error::unrecognized_file_format); 512 } 513 error(std::move(Err)); 514 } 515 516 static void dumpInput(StringRef File) { 517 // Attempt to open the binary. 518 Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(File); 519 if (!BinaryOrErr) { 520 auto EC = errorToErrorCode(BinaryOrErr.takeError()); 521 reportError(File, EC); 522 return; 523 } 524 Binary &Binary = *BinaryOrErr.get().getBinary(); 525 526 if (Archive *Arc = dyn_cast<Archive>(&Binary)) 527 dumpArchive(Arc); 528 else if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary)) 529 dumpCXXData(Obj); 530 else 531 reportError(File, cxxdump_error::unrecognized_file_format); 532 } 533 534 int main(int argc, const char *argv[]) { 535 InitLLVM X(argc, argv); 536 537 // Initialize targets. 538 llvm::InitializeAllTargetInfos(); 539 540 // Register the target printer for --version. 541 cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion); 542 543 cl::ParseCommandLineOptions(argc, argv, "LLVM C++ ABI Data Dumper\n"); 544 545 // Default to stdin if no filename is specified. 546 if (opts::InputFilenames.size() == 0) 547 opts::InputFilenames.push_back("-"); 548 549 llvm::for_each(opts::InputFilenames, dumpInput); 550 551 return EXIT_SUCCESS; 552 } 553