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/MC/TargetRegistry.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/InitLLVM.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::OptionCategory CXXDumpCategory("CXX Dump Options"); 37 cl::list<std::string> InputFilenames(cl::Positional, 38 cl::desc("<input object files>"), 39 cl::cat(CXXDumpCategory)); 40 } // namespace opts 41 42 namespace llvm { 43 44 static void error(std::error_code EC) { 45 if (!EC) 46 return; 47 WithColor::error(outs(), "") << "reading file: " << EC.message() << ".\n"; 48 outs().flush(); 49 exit(1); 50 } 51 52 [[noreturn]] static void error(Error Err) { 53 logAllUnhandledErrors(std::move(Err), WithColor::error(outs()), 54 "reading file: "); 55 outs().flush(); 56 exit(1); 57 } 58 59 template <typename T> 60 T unwrapOrError(Expected<T> EO) { 61 if (!EO) 62 error(EO.takeError()); 63 return std::move(*EO); 64 } 65 66 } // namespace llvm 67 68 static void reportError(StringRef Input, StringRef Message) { 69 if (Input == "-") 70 Input = "<stdin>"; 71 WithColor::error(errs(), Input) << Message << "\n"; 72 errs().flush(); 73 exit(1); 74 } 75 76 static void reportError(StringRef Input, std::error_code EC) { 77 reportError(Input, EC.message()); 78 } 79 80 static std::map<SectionRef, SmallVector<SectionRef, 1>> SectionRelocMap; 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 : SectionRelocMap[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 Expected<StringRef> RelocSymName = RelocSymI->getName(); 96 error(errorToErrorCode(RelocSymName.takeError())); 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 : SectionRelocMap[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 Expected<StringRef> RelocSymName = RelocSymI->getName(); 118 error(errorToErrorCode(RelocSymName.takeError())); 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 SectionRelocMap.clear(); 177 for (const SectionRef &Section : Obj->sections()) { 178 Expected<section_iterator> ErrOrSec = Section.getRelocatedSection(); 179 if (!ErrOrSec) 180 error(ErrOrSec.takeError()); 181 182 section_iterator Sec2 = *ErrOrSec; 183 if (Sec2 != Obj->section_end()) 184 SectionRelocMap[*Sec2].push_back(Section); 185 } 186 187 uint8_t BytesInAddress = Obj->getBytesInAddress(); 188 189 std::vector<std::pair<SymbolRef, uint64_t>> SymAddr = 190 object::computeSymbolSizes(*Obj); 191 192 for (auto &P : SymAddr) { 193 object::SymbolRef Sym = P.first; 194 uint64_t SymSize = P.second; 195 Expected<StringRef> SymNameOrErr = Sym.getName(); 196 error(errorToErrorCode(SymNameOrErr.takeError())); 197 StringRef SymName = *SymNameOrErr; 198 Expected<object::section_iterator> SecIOrErr = Sym.getSection(); 199 error(errorToErrorCode(SecIOrErr.takeError())); 200 object::section_iterator SecI = *SecIOrErr; 201 // Skip external symbols. 202 if (SecI == Obj->section_end()) 203 continue; 204 const SectionRef &Sec = *SecI; 205 // Skip virtual or BSS sections. 206 if (Sec.isBSS() || Sec.isVirtual()) 207 continue; 208 StringRef SecContents = unwrapOrError(Sec.getContents()); 209 Expected<uint64_t> SymAddressOrErr = Sym.getAddress(); 210 error(errorToErrorCode(SymAddressOrErr.takeError())); 211 uint64_t SymAddress = *SymAddressOrErr; 212 uint64_t SecAddress = Sec.getAddress(); 213 uint64_t SecSize = Sec.getSize(); 214 uint64_t SymOffset = SymAddress - SecAddress; 215 StringRef SymContents = SecContents.substr(SymOffset, SymSize); 216 217 // VFTables in the MS-ABI start with '??_7' and are contained within their 218 // own COMDAT section. We then determine the contents of the VFTable by 219 // looking at each relocation in the section. 220 if (SymName.starts_with("??_7")) { 221 // Each relocation either names a virtual method or a thunk. We note the 222 // offset into the section and the symbol used for the relocation. 223 collectRelocationOffsets(Obj, Sec, SecAddress, SecAddress, SecSize, 224 SymName, VFTableEntries); 225 } 226 // VBTables in the MS-ABI start with '??_8' and are filled with 32-bit 227 // offsets of virtual bases. 228 else if (SymName.starts_with("??_8")) { 229 ArrayRef<little32_t> VBTableData( 230 reinterpret_cast<const little32_t *>(SymContents.data()), 231 SymContents.size() / sizeof(little32_t)); 232 VBTables[SymName] = VBTableData; 233 } 234 // Complete object locators in the MS-ABI start with '??_R4' 235 else if (SymName.starts_with("??_R4")) { 236 CompleteObjectLocator COL; 237 COL.Data = 238 ArrayRef(reinterpret_cast<const little32_t *>(SymContents.data()), 3); 239 StringRef *I = std::begin(COL.Symbols), *E = std::end(COL.Symbols); 240 collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E); 241 COLs[SymName] = COL; 242 } 243 // Class hierarchy descriptors in the MS-ABI start with '??_R3' 244 else if (SymName.starts_with("??_R3")) { 245 ClassHierarchyDescriptor CHD; 246 CHD.Data = 247 ArrayRef(reinterpret_cast<const little32_t *>(SymContents.data()), 3); 248 StringRef *I = std::begin(CHD.Symbols), *E = std::end(CHD.Symbols); 249 collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E); 250 CHDs[SymName] = CHD; 251 } 252 // Class hierarchy descriptors in the MS-ABI start with '??_R2' 253 else if (SymName.starts_with("??_R2")) { 254 // Each relocation names a base class descriptor. We note the offset into 255 // the section and the symbol used for the relocation. 256 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 257 SymName, BCAEntries); 258 } 259 // Base class descriptors in the MS-ABI start with '??_R1' 260 else if (SymName.starts_with("??_R1")) { 261 BaseClassDescriptor BCD; 262 BCD.Data = ArrayRef( 263 reinterpret_cast<const little32_t *>(SymContents.data()) + 1, 5); 264 StringRef *I = std::begin(BCD.Symbols), *E = std::end(BCD.Symbols); 265 collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E); 266 BCDs[SymName] = BCD; 267 } 268 // Type descriptors in the MS-ABI start with '??_R0' 269 else if (SymName.starts_with("??_R0")) { 270 const char *DataPtr = SymContents.drop_front(BytesInAddress).data(); 271 TypeDescriptor TD; 272 if (BytesInAddress == 8) 273 TD.AlwaysZero = *reinterpret_cast<const little64_t *>(DataPtr); 274 else 275 TD.AlwaysZero = *reinterpret_cast<const little32_t *>(DataPtr); 276 TD.MangledName = SymContents.drop_front(BytesInAddress * 2); 277 StringRef *I = std::begin(TD.Symbols), *E = std::end(TD.Symbols); 278 collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E); 279 TDs[SymName] = TD; 280 } 281 // Throw descriptors in the MS-ABI start with '_TI' 282 else if (SymName.starts_with("_TI") || SymName.starts_with("__TI")) { 283 ThrowInfo TI; 284 TI.Flags = *reinterpret_cast<const little32_t *>(SymContents.data()); 285 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 286 SymName, TIEntries); 287 TIs[SymName] = TI; 288 } 289 // Catchable type arrays in the MS-ABI start with _CTA or __CTA. 290 else if (SymName.starts_with("_CTA") || SymName.starts_with("__CTA")) { 291 CatchableTypeArray CTA; 292 CTA.NumEntries = 293 *reinterpret_cast<const little32_t *>(SymContents.data()); 294 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 295 SymName, CTAEntries); 296 CTAs[SymName] = CTA; 297 } 298 // Catchable types in the MS-ABI start with _CT or __CT. 299 else if (SymName.starts_with("_CT") || SymName.starts_with("__CT")) { 300 const little32_t *DataPtr = 301 reinterpret_cast<const little32_t *>(SymContents.data()); 302 CatchableType CT; 303 CT.Flags = DataPtr[0]; 304 CT.NonVirtualBaseAdjustmentOffset = DataPtr[2]; 305 CT.VirtualBasePointerOffset = DataPtr[3]; 306 CT.VirtualBaseAdjustmentOffset = DataPtr[4]; 307 CT.Size = DataPtr[5]; 308 StringRef *I = std::begin(CT.Symbols), *E = std::end(CT.Symbols); 309 collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E); 310 CTs[SymName] = CT; 311 } 312 // Construction vtables in the Itanium ABI start with '_ZTT' or '__ZTT'. 313 else if (SymName.starts_with("_ZTT") || SymName.starts_with("__ZTT")) { 314 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 315 SymName, VTTEntries); 316 } 317 // Typeinfo names in the Itanium ABI start with '_ZTS' or '__ZTS'. 318 else if (SymName.starts_with("_ZTS") || SymName.starts_with("__ZTS")) { 319 TINames[SymName] = SymContents.slice(0, SymContents.find('\0')); 320 } 321 // Vtables in the Itanium ABI start with '_ZTV' or '__ZTV'. 322 else if (SymName.starts_with("_ZTV") || SymName.starts_with("__ZTV")) { 323 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 324 SymName, VTableSymEntries); 325 for (uint64_t SymOffI = 0; SymOffI < SymSize; SymOffI += BytesInAddress) { 326 auto Key = std::make_pair(SymName, SymOffI); 327 if (VTableSymEntries.count(Key)) 328 continue; 329 const char *DataPtr = 330 SymContents.substr(SymOffI, BytesInAddress).data(); 331 int64_t VData; 332 if (BytesInAddress == 8) 333 VData = *reinterpret_cast<const little64_t *>(DataPtr); 334 else 335 VData = *reinterpret_cast<const little32_t *>(DataPtr); 336 VTableDataEntries[Key] = VData; 337 } 338 } 339 // Typeinfo structures in the Itanium ABI start with '_ZTI' or '__ZTI'. 340 else if (SymName.starts_with("_ZTI") || SymName.starts_with("__ZTI")) { 341 // FIXME: Do something with these! 342 } 343 } 344 for (const auto &VFTableEntry : VFTableEntries) { 345 StringRef VFTableName = VFTableEntry.first.first; 346 uint64_t Offset = VFTableEntry.first.second; 347 StringRef SymName = VFTableEntry.second; 348 outs() << VFTableName << '[' << Offset << "]: " << SymName << '\n'; 349 } 350 for (const auto &VBTable : VBTables) { 351 StringRef VBTableName = VBTable.first; 352 uint32_t Idx = 0; 353 for (little32_t Offset : VBTable.second) { 354 outs() << VBTableName << '[' << Idx << "]: " << Offset << '\n'; 355 Idx += sizeof(Offset); 356 } 357 } 358 for (const auto &COLPair : COLs) { 359 StringRef COLName = COLPair.first; 360 const CompleteObjectLocator &COL = COLPair.second; 361 outs() << COLName << "[IsImageRelative]: " << COL.Data[0] << '\n'; 362 outs() << COLName << "[OffsetToTop]: " << COL.Data[1] << '\n'; 363 outs() << COLName << "[VFPtrOffset]: " << COL.Data[2] << '\n'; 364 outs() << COLName << "[TypeDescriptor]: " << COL.Symbols[0] << '\n'; 365 outs() << COLName << "[ClassHierarchyDescriptor]: " << COL.Symbols[1] 366 << '\n'; 367 } 368 for (const auto &CHDPair : CHDs) { 369 StringRef CHDName = CHDPair.first; 370 const ClassHierarchyDescriptor &CHD = CHDPair.second; 371 outs() << CHDName << "[AlwaysZero]: " << CHD.Data[0] << '\n'; 372 outs() << CHDName << "[Flags]: " << CHD.Data[1] << '\n'; 373 outs() << CHDName << "[NumClasses]: " << CHD.Data[2] << '\n'; 374 outs() << CHDName << "[BaseClassArray]: " << CHD.Symbols[0] << '\n'; 375 } 376 for (const auto &BCAEntry : BCAEntries) { 377 StringRef BCAName = BCAEntry.first.first; 378 uint64_t Offset = BCAEntry.first.second; 379 StringRef SymName = BCAEntry.second; 380 outs() << BCAName << '[' << Offset << "]: " << SymName << '\n'; 381 } 382 for (const auto &BCDPair : BCDs) { 383 StringRef BCDName = BCDPair.first; 384 const BaseClassDescriptor &BCD = BCDPair.second; 385 outs() << BCDName << "[TypeDescriptor]: " << BCD.Symbols[0] << '\n'; 386 outs() << BCDName << "[NumBases]: " << BCD.Data[0] << '\n'; 387 outs() << BCDName << "[OffsetInVBase]: " << BCD.Data[1] << '\n'; 388 outs() << BCDName << "[VBPtrOffset]: " << BCD.Data[2] << '\n'; 389 outs() << BCDName << "[OffsetInVBTable]: " << BCD.Data[3] << '\n'; 390 outs() << BCDName << "[Flags]: " << BCD.Data[4] << '\n'; 391 outs() << BCDName << "[ClassHierarchyDescriptor]: " << BCD.Symbols[1] 392 << '\n'; 393 } 394 for (const auto &TDPair : TDs) { 395 StringRef TDName = TDPair.first; 396 const TypeDescriptor &TD = TDPair.second; 397 outs() << TDName << "[VFPtr]: " << TD.Symbols[0] << '\n'; 398 outs() << TDName << "[AlwaysZero]: " << TD.AlwaysZero << '\n'; 399 outs() << TDName << "[MangledName]: "; 400 outs().write_escaped(TD.MangledName.rtrim(StringRef("\0", 1)), 401 /*UseHexEscapes=*/true) 402 << '\n'; 403 } 404 for (const auto &TIPair : TIs) { 405 StringRef TIName = TIPair.first; 406 const ThrowInfo &TI = TIPair.second; 407 auto dumpThrowInfoFlag = [&](const char *Name, uint32_t Flag) { 408 outs() << TIName << "[Flags." << Name 409 << "]: " << (TI.Flags & Flag ? "true" : "false") << '\n'; 410 }; 411 auto dumpThrowInfoSymbol = [&](const char *Name, int Offset) { 412 outs() << TIName << '[' << Name << "]: "; 413 auto Entry = TIEntries.find(std::make_pair(TIName, Offset)); 414 outs() << (Entry == TIEntries.end() ? "null" : Entry->second) << '\n'; 415 }; 416 outs() << TIName << "[Flags]: " << TI.Flags << '\n'; 417 dumpThrowInfoFlag("Const", 1); 418 dumpThrowInfoFlag("Volatile", 2); 419 dumpThrowInfoSymbol("CleanupFn", 4); 420 dumpThrowInfoSymbol("ForwardCompat", 8); 421 dumpThrowInfoSymbol("CatchableTypeArray", 12); 422 } 423 for (const auto &CTAPair : CTAs) { 424 StringRef CTAName = CTAPair.first; 425 const CatchableTypeArray &CTA = CTAPair.second; 426 427 outs() << CTAName << "[NumEntries]: " << CTA.NumEntries << '\n'; 428 429 unsigned Idx = 0; 430 for (auto I = CTAEntries.lower_bound(std::make_pair(CTAName, 0)), 431 E = CTAEntries.upper_bound(std::make_pair(CTAName, UINT64_MAX)); 432 I != E; ++I) 433 outs() << CTAName << '[' << Idx++ << "]: " << I->second << '\n'; 434 } 435 for (const auto &CTPair : CTs) { 436 StringRef CTName = CTPair.first; 437 const CatchableType &CT = CTPair.second; 438 auto dumpCatchableTypeFlag = [&](const char *Name, uint32_t Flag) { 439 outs() << CTName << "[Flags." << Name 440 << "]: " << (CT.Flags & Flag ? "true" : "false") << '\n'; 441 }; 442 outs() << CTName << "[Flags]: " << CT.Flags << '\n'; 443 dumpCatchableTypeFlag("ScalarType", 1); 444 dumpCatchableTypeFlag("VirtualInheritance", 4); 445 outs() << CTName << "[TypeDescriptor]: " << CT.Symbols[0] << '\n'; 446 outs() << CTName << "[NonVirtualBaseAdjustmentOffset]: " 447 << CT.NonVirtualBaseAdjustmentOffset << '\n'; 448 outs() << CTName 449 << "[VirtualBasePointerOffset]: " << CT.VirtualBasePointerOffset 450 << '\n'; 451 outs() << CTName << "[VirtualBaseAdjustmentOffset]: " 452 << CT.VirtualBaseAdjustmentOffset << '\n'; 453 outs() << CTName << "[Size]: " << CT.Size << '\n'; 454 outs() << CTName 455 << "[CopyCtor]: " << (CT.Symbols[1].empty() ? "null" : CT.Symbols[1]) 456 << '\n'; 457 } 458 for (const auto &VTTPair : VTTEntries) { 459 StringRef VTTName = VTTPair.first.first; 460 uint64_t VTTOffset = VTTPair.first.second; 461 StringRef VTTEntry = VTTPair.second; 462 outs() << VTTName << '[' << VTTOffset << "]: " << VTTEntry << '\n'; 463 } 464 for (const auto &TIPair : TINames) { 465 StringRef TIName = TIPair.first; 466 outs() << TIName << ": " << TIPair.second << '\n'; 467 } 468 auto VTableSymI = VTableSymEntries.begin(); 469 auto VTableSymE = VTableSymEntries.end(); 470 auto VTableDataI = VTableDataEntries.begin(); 471 auto VTableDataE = VTableDataEntries.end(); 472 for (;;) { 473 bool SymDone = VTableSymI == VTableSymE; 474 bool DataDone = VTableDataI == VTableDataE; 475 if (SymDone && DataDone) 476 break; 477 if (!SymDone && (DataDone || VTableSymI->first < VTableDataI->first)) { 478 StringRef VTableName = VTableSymI->first.first; 479 uint64_t Offset = VTableSymI->first.second; 480 StringRef VTableEntry = VTableSymI->second; 481 outs() << VTableName << '[' << Offset << "]: "; 482 outs() << VTableEntry; 483 outs() << '\n'; 484 ++VTableSymI; 485 continue; 486 } 487 if (!DataDone && (SymDone || VTableDataI->first < VTableSymI->first)) { 488 StringRef VTableName = VTableDataI->first.first; 489 uint64_t Offset = VTableDataI->first.second; 490 int64_t VTableEntry = VTableDataI->second; 491 outs() << VTableName << '[' << Offset << "]: "; 492 outs() << VTableEntry; 493 outs() << '\n'; 494 ++VTableDataI; 495 continue; 496 } 497 } 498 } 499 500 static void dumpArchive(const Archive *Arc) { 501 Error Err = Error::success(); 502 for (const auto &ArcC : Arc->children(Err)) { 503 Expected<std::unique_ptr<Binary>> ChildOrErr = ArcC.getAsBinary(); 504 if (!ChildOrErr) { 505 // Ignore non-object files. 506 if (auto E = isNotObjectErrorInvalidFileType(ChildOrErr.takeError())) { 507 std::string Buf; 508 raw_string_ostream OS(Buf); 509 logAllUnhandledErrors(std::move(E), OS); 510 OS.flush(); 511 reportError(Arc->getFileName(), Buf); 512 } 513 consumeError(ChildOrErr.takeError()); 514 continue; 515 } 516 517 if (ObjectFile *Obj = dyn_cast<ObjectFile>(&*ChildOrErr.get())) 518 dumpCXXData(Obj); 519 else 520 reportError(Arc->getFileName(), cxxdump_error::unrecognized_file_format); 521 } 522 if (Err) 523 error(std::move(Err)); 524 } 525 526 static void dumpInput(StringRef File) { 527 // Attempt to open the binary. 528 Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(File); 529 if (!BinaryOrErr) { 530 auto EC = errorToErrorCode(BinaryOrErr.takeError()); 531 reportError(File, EC); 532 return; 533 } 534 Binary &Binary = *BinaryOrErr.get().getBinary(); 535 536 if (Archive *Arc = dyn_cast<Archive>(&Binary)) 537 dumpArchive(Arc); 538 else if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary)) 539 dumpCXXData(Obj); 540 else 541 reportError(File, cxxdump_error::unrecognized_file_format); 542 } 543 544 int main(int argc, const char *argv[]) { 545 InitLLVM X(argc, argv); 546 547 // Initialize targets. 548 llvm::InitializeAllTargetInfos(); 549 550 // Register the target printer for --version. 551 cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion); 552 553 cl::HideUnrelatedOptions({&opts::CXXDumpCategory, &getColorCategory()}); 554 cl::ParseCommandLineOptions(argc, argv, "LLVM C++ ABI Data Dumper\n"); 555 556 // Default to stdin if no filename is specified. 557 if (opts::InputFilenames.size() == 0) 558 opts::InputFilenames.push_back("-"); 559 560 llvm::for_each(opts::InputFilenames, dumpInput); 561 562 return EXIT_SUCCESS; 563 } 564