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 LLVM_ATTRIBUTE_NORETURN static void error(Error Err) { 52 logAllUnhandledErrors(std::move(Err), WithColor::error(outs()), 53 "reading file: "); 54 outs().flush(); 55 exit(1); 56 } 57 58 template <typename T> 59 T unwrapOrError(Expected<T> EO) { 60 if (!EO) 61 error(EO.takeError()); 62 return std::move(*EO); 63 } 64 65 } // namespace llvm 66 67 static void reportError(StringRef Input, StringRef Message) { 68 if (Input == "-") 69 Input = "<stdin>"; 70 WithColor::error(errs(), Input) << Message << "\n"; 71 errs().flush(); 72 exit(1); 73 } 74 75 static void reportError(StringRef Input, std::error_code EC) { 76 reportError(Input, EC.message()); 77 } 78 79 static std::map<SectionRef, SmallVector<SectionRef, 1>> SectionRelocMap; 80 81 static void collectRelocatedSymbols(const ObjectFile *Obj, 82 const SectionRef &Sec, uint64_t SecAddress, 83 uint64_t SymAddress, uint64_t SymSize, 84 StringRef *I, StringRef *E) { 85 uint64_t SymOffset = SymAddress - SecAddress; 86 uint64_t SymEnd = SymOffset + SymSize; 87 for (const SectionRef &SR : SectionRelocMap[Sec]) { 88 for (const object::RelocationRef &Reloc : SR.relocations()) { 89 if (I == E) 90 break; 91 const object::symbol_iterator RelocSymI = Reloc.getSymbol(); 92 if (RelocSymI == Obj->symbol_end()) 93 continue; 94 Expected<StringRef> RelocSymName = RelocSymI->getName(); 95 error(errorToErrorCode(RelocSymName.takeError())); 96 uint64_t Offset = Reloc.getOffset(); 97 if (Offset >= SymOffset && Offset < SymEnd) { 98 *I = *RelocSymName; 99 ++I; 100 } 101 } 102 } 103 } 104 105 static void collectRelocationOffsets( 106 const ObjectFile *Obj, const SectionRef &Sec, uint64_t SecAddress, 107 uint64_t SymAddress, uint64_t SymSize, StringRef SymName, 108 std::map<std::pair<StringRef, uint64_t>, StringRef> &Collection) { 109 uint64_t SymOffset = SymAddress - SecAddress; 110 uint64_t SymEnd = SymOffset + SymSize; 111 for (const SectionRef &SR : SectionRelocMap[Sec]) { 112 for (const object::RelocationRef &Reloc : SR.relocations()) { 113 const object::symbol_iterator RelocSymI = Reloc.getSymbol(); 114 if (RelocSymI == Obj->symbol_end()) 115 continue; 116 Expected<StringRef> RelocSymName = RelocSymI->getName(); 117 error(errorToErrorCode(RelocSymName.takeError())); 118 uint64_t Offset = Reloc.getOffset(); 119 if (Offset >= SymOffset && Offset < SymEnd) 120 Collection[std::make_pair(SymName, Offset - SymOffset)] = *RelocSymName; 121 } 122 } 123 } 124 125 static void dumpCXXData(const ObjectFile *Obj) { 126 struct CompleteObjectLocator { 127 StringRef Symbols[2]; 128 ArrayRef<little32_t> Data; 129 }; 130 struct ClassHierarchyDescriptor { 131 StringRef Symbols[1]; 132 ArrayRef<little32_t> Data; 133 }; 134 struct BaseClassDescriptor { 135 StringRef Symbols[2]; 136 ArrayRef<little32_t> Data; 137 }; 138 struct TypeDescriptor { 139 StringRef Symbols[1]; 140 uint64_t AlwaysZero; 141 StringRef MangledName; 142 }; 143 struct ThrowInfo { 144 uint32_t Flags; 145 }; 146 struct CatchableTypeArray { 147 uint32_t NumEntries; 148 }; 149 struct CatchableType { 150 uint32_t Flags; 151 uint32_t NonVirtualBaseAdjustmentOffset; 152 int32_t VirtualBasePointerOffset; 153 uint32_t VirtualBaseAdjustmentOffset; 154 uint32_t Size; 155 StringRef Symbols[2]; 156 }; 157 std::map<std::pair<StringRef, uint64_t>, StringRef> VFTableEntries; 158 std::map<std::pair<StringRef, uint64_t>, StringRef> TIEntries; 159 std::map<std::pair<StringRef, uint64_t>, StringRef> CTAEntries; 160 std::map<StringRef, ArrayRef<little32_t>> VBTables; 161 std::map<StringRef, CompleteObjectLocator> COLs; 162 std::map<StringRef, ClassHierarchyDescriptor> CHDs; 163 std::map<std::pair<StringRef, uint64_t>, StringRef> BCAEntries; 164 std::map<StringRef, BaseClassDescriptor> BCDs; 165 std::map<StringRef, TypeDescriptor> TDs; 166 std::map<StringRef, ThrowInfo> TIs; 167 std::map<StringRef, CatchableTypeArray> CTAs; 168 std::map<StringRef, CatchableType> CTs; 169 170 std::map<std::pair<StringRef, uint64_t>, StringRef> VTableSymEntries; 171 std::map<std::pair<StringRef, uint64_t>, int64_t> VTableDataEntries; 172 std::map<std::pair<StringRef, uint64_t>, StringRef> VTTEntries; 173 std::map<StringRef, StringRef> TINames; 174 175 SectionRelocMap.clear(); 176 for (const SectionRef &Section : Obj->sections()) { 177 Expected<section_iterator> ErrOrSec = Section.getRelocatedSection(); 178 if (!ErrOrSec) 179 error(ErrOrSec.takeError()); 180 181 section_iterator Sec2 = *ErrOrSec; 182 if (Sec2 != Obj->section_end()) 183 SectionRelocMap[*Sec2].push_back(Section); 184 } 185 186 uint8_t BytesInAddress = Obj->getBytesInAddress(); 187 188 std::vector<std::pair<SymbolRef, uint64_t>> SymAddr = 189 object::computeSymbolSizes(*Obj); 190 191 for (auto &P : SymAddr) { 192 object::SymbolRef Sym = P.first; 193 uint64_t SymSize = P.second; 194 Expected<StringRef> SymNameOrErr = Sym.getName(); 195 error(errorToErrorCode(SymNameOrErr.takeError())); 196 StringRef SymName = *SymNameOrErr; 197 Expected<object::section_iterator> SecIOrErr = Sym.getSection(); 198 error(errorToErrorCode(SecIOrErr.takeError())); 199 object::section_iterator SecI = *SecIOrErr; 200 // Skip external symbols. 201 if (SecI == Obj->section_end()) 202 continue; 203 const SectionRef &Sec = *SecI; 204 // Skip virtual or BSS sections. 205 if (Sec.isBSS() || Sec.isVirtual()) 206 continue; 207 StringRef SecContents = unwrapOrError(Sec.getContents()); 208 Expected<uint64_t> SymAddressOrErr = Sym.getAddress(); 209 error(errorToErrorCode(SymAddressOrErr.takeError())); 210 uint64_t SymAddress = *SymAddressOrErr; 211 uint64_t SecAddress = Sec.getAddress(); 212 uint64_t SecSize = Sec.getSize(); 213 uint64_t SymOffset = SymAddress - SecAddress; 214 StringRef SymContents = SecContents.substr(SymOffset, SymSize); 215 216 // VFTables in the MS-ABI start with '??_7' and are contained within their 217 // own COMDAT section. We then determine the contents of the VFTable by 218 // looking at each relocation in the section. 219 if (SymName.startswith("??_7")) { 220 // Each relocation either names a virtual method or a thunk. We note the 221 // offset into the section and the symbol used for the relocation. 222 collectRelocationOffsets(Obj, Sec, SecAddress, SecAddress, SecSize, 223 SymName, VFTableEntries); 224 } 225 // VBTables in the MS-ABI start with '??_8' and are filled with 32-bit 226 // offsets of virtual bases. 227 else if (SymName.startswith("??_8")) { 228 ArrayRef<little32_t> VBTableData( 229 reinterpret_cast<const little32_t *>(SymContents.data()), 230 SymContents.size() / sizeof(little32_t)); 231 VBTables[SymName] = VBTableData; 232 } 233 // Complete object locators in the MS-ABI start with '??_R4' 234 else if (SymName.startswith("??_R4")) { 235 CompleteObjectLocator COL; 236 COL.Data = makeArrayRef( 237 reinterpret_cast<const little32_t *>(SymContents.data()), 3); 238 StringRef *I = std::begin(COL.Symbols), *E = std::end(COL.Symbols); 239 collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E); 240 COLs[SymName] = COL; 241 } 242 // Class hierarchy descriptors in the MS-ABI start with '??_R3' 243 else if (SymName.startswith("??_R3")) { 244 ClassHierarchyDescriptor CHD; 245 CHD.Data = makeArrayRef( 246 reinterpret_cast<const little32_t *>(SymContents.data()), 3); 247 StringRef *I = std::begin(CHD.Symbols), *E = std::end(CHD.Symbols); 248 collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E); 249 CHDs[SymName] = CHD; 250 } 251 // Class hierarchy descriptors in the MS-ABI start with '??_R2' 252 else if (SymName.startswith("??_R2")) { 253 // Each relocation names a base class descriptor. We note the offset into 254 // the section and the symbol used for the relocation. 255 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 256 SymName, BCAEntries); 257 } 258 // Base class descriptors in the MS-ABI start with '??_R1' 259 else if (SymName.startswith("??_R1")) { 260 BaseClassDescriptor BCD; 261 BCD.Data = makeArrayRef( 262 reinterpret_cast<const little32_t *>(SymContents.data()) + 1, 5); 263 StringRef *I = std::begin(BCD.Symbols), *E = std::end(BCD.Symbols); 264 collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E); 265 BCDs[SymName] = BCD; 266 } 267 // Type descriptors in the MS-ABI start with '??_R0' 268 else if (SymName.startswith("??_R0")) { 269 const char *DataPtr = SymContents.drop_front(BytesInAddress).data(); 270 TypeDescriptor TD; 271 if (BytesInAddress == 8) 272 TD.AlwaysZero = *reinterpret_cast<const little64_t *>(DataPtr); 273 else 274 TD.AlwaysZero = *reinterpret_cast<const little32_t *>(DataPtr); 275 TD.MangledName = SymContents.drop_front(BytesInAddress * 2); 276 StringRef *I = std::begin(TD.Symbols), *E = std::end(TD.Symbols); 277 collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E); 278 TDs[SymName] = TD; 279 } 280 // Throw descriptors in the MS-ABI start with '_TI' 281 else if (SymName.startswith("_TI") || SymName.startswith("__TI")) { 282 ThrowInfo TI; 283 TI.Flags = *reinterpret_cast<const little32_t *>(SymContents.data()); 284 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 285 SymName, TIEntries); 286 TIs[SymName] = TI; 287 } 288 // Catchable type arrays in the MS-ABI start with _CTA or __CTA. 289 else if (SymName.startswith("_CTA") || SymName.startswith("__CTA")) { 290 CatchableTypeArray CTA; 291 CTA.NumEntries = 292 *reinterpret_cast<const little32_t *>(SymContents.data()); 293 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 294 SymName, CTAEntries); 295 CTAs[SymName] = CTA; 296 } 297 // Catchable types in the MS-ABI start with _CT or __CT. 298 else if (SymName.startswith("_CT") || SymName.startswith("__CT")) { 299 const little32_t *DataPtr = 300 reinterpret_cast<const little32_t *>(SymContents.data()); 301 CatchableType CT; 302 CT.Flags = DataPtr[0]; 303 CT.NonVirtualBaseAdjustmentOffset = DataPtr[2]; 304 CT.VirtualBasePointerOffset = DataPtr[3]; 305 CT.VirtualBaseAdjustmentOffset = DataPtr[4]; 306 CT.Size = DataPtr[5]; 307 StringRef *I = std::begin(CT.Symbols), *E = std::end(CT.Symbols); 308 collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E); 309 CTs[SymName] = CT; 310 } 311 // Construction vtables in the Itanium ABI start with '_ZTT' or '__ZTT'. 312 else if (SymName.startswith("_ZTT") || SymName.startswith("__ZTT")) { 313 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 314 SymName, VTTEntries); 315 } 316 // Typeinfo names in the Itanium ABI start with '_ZTS' or '__ZTS'. 317 else if (SymName.startswith("_ZTS") || SymName.startswith("__ZTS")) { 318 TINames[SymName] = SymContents.slice(0, SymContents.find('\0')); 319 } 320 // Vtables in the Itanium ABI start with '_ZTV' or '__ZTV'. 321 else if (SymName.startswith("_ZTV") || SymName.startswith("__ZTV")) { 322 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 323 SymName, VTableSymEntries); 324 for (uint64_t SymOffI = 0; SymOffI < SymSize; SymOffI += BytesInAddress) { 325 auto Key = std::make_pair(SymName, SymOffI); 326 if (VTableSymEntries.count(Key)) 327 continue; 328 const char *DataPtr = 329 SymContents.substr(SymOffI, BytesInAddress).data(); 330 int64_t VData; 331 if (BytesInAddress == 8) 332 VData = *reinterpret_cast<const little64_t *>(DataPtr); 333 else 334 VData = *reinterpret_cast<const little32_t *>(DataPtr); 335 VTableDataEntries[Key] = VData; 336 } 337 } 338 // Typeinfo structures in the Itanium ABI start with '_ZTI' or '__ZTI'. 339 else if (SymName.startswith("_ZTI") || SymName.startswith("__ZTI")) { 340 // FIXME: Do something with these! 341 } 342 } 343 for (const auto &VFTableEntry : VFTableEntries) { 344 StringRef VFTableName = VFTableEntry.first.first; 345 uint64_t Offset = VFTableEntry.first.second; 346 StringRef SymName = VFTableEntry.second; 347 outs() << VFTableName << '[' << Offset << "]: " << SymName << '\n'; 348 } 349 for (const auto &VBTable : VBTables) { 350 StringRef VBTableName = VBTable.first; 351 uint32_t Idx = 0; 352 for (little32_t Offset : VBTable.second) { 353 outs() << VBTableName << '[' << Idx << "]: " << Offset << '\n'; 354 Idx += sizeof(Offset); 355 } 356 } 357 for (const auto &COLPair : COLs) { 358 StringRef COLName = COLPair.first; 359 const CompleteObjectLocator &COL = COLPair.second; 360 outs() << COLName << "[IsImageRelative]: " << COL.Data[0] << '\n'; 361 outs() << COLName << "[OffsetToTop]: " << COL.Data[1] << '\n'; 362 outs() << COLName << "[VFPtrOffset]: " << COL.Data[2] << '\n'; 363 outs() << COLName << "[TypeDescriptor]: " << COL.Symbols[0] << '\n'; 364 outs() << COLName << "[ClassHierarchyDescriptor]: " << COL.Symbols[1] 365 << '\n'; 366 } 367 for (const auto &CHDPair : CHDs) { 368 StringRef CHDName = CHDPair.first; 369 const ClassHierarchyDescriptor &CHD = CHDPair.second; 370 outs() << CHDName << "[AlwaysZero]: " << CHD.Data[0] << '\n'; 371 outs() << CHDName << "[Flags]: " << CHD.Data[1] << '\n'; 372 outs() << CHDName << "[NumClasses]: " << CHD.Data[2] << '\n'; 373 outs() << CHDName << "[BaseClassArray]: " << CHD.Symbols[0] << '\n'; 374 } 375 for (const auto &BCAEntry : BCAEntries) { 376 StringRef BCAName = BCAEntry.first.first; 377 uint64_t Offset = BCAEntry.first.second; 378 StringRef SymName = BCAEntry.second; 379 outs() << BCAName << '[' << Offset << "]: " << SymName << '\n'; 380 } 381 for (const auto &BCDPair : BCDs) { 382 StringRef BCDName = BCDPair.first; 383 const BaseClassDescriptor &BCD = BCDPair.second; 384 outs() << BCDName << "[TypeDescriptor]: " << BCD.Symbols[0] << '\n'; 385 outs() << BCDName << "[NumBases]: " << BCD.Data[0] << '\n'; 386 outs() << BCDName << "[OffsetInVBase]: " << BCD.Data[1] << '\n'; 387 outs() << BCDName << "[VBPtrOffset]: " << BCD.Data[2] << '\n'; 388 outs() << BCDName << "[OffsetInVBTable]: " << BCD.Data[3] << '\n'; 389 outs() << BCDName << "[Flags]: " << BCD.Data[4] << '\n'; 390 outs() << BCDName << "[ClassHierarchyDescriptor]: " << BCD.Symbols[1] 391 << '\n'; 392 } 393 for (const auto &TDPair : TDs) { 394 StringRef TDName = TDPair.first; 395 const TypeDescriptor &TD = TDPair.second; 396 outs() << TDName << "[VFPtr]: " << TD.Symbols[0] << '\n'; 397 outs() << TDName << "[AlwaysZero]: " << TD.AlwaysZero << '\n'; 398 outs() << TDName << "[MangledName]: "; 399 outs().write_escaped(TD.MangledName.rtrim(StringRef("\0", 1)), 400 /*UseHexEscapes=*/true) 401 << '\n'; 402 } 403 for (const auto &TIPair : TIs) { 404 StringRef TIName = TIPair.first; 405 const ThrowInfo &TI = TIPair.second; 406 auto dumpThrowInfoFlag = [&](const char *Name, uint32_t Flag) { 407 outs() << TIName << "[Flags." << Name 408 << "]: " << (TI.Flags & Flag ? "true" : "false") << '\n'; 409 }; 410 auto dumpThrowInfoSymbol = [&](const char *Name, int Offset) { 411 outs() << TIName << '[' << Name << "]: "; 412 auto Entry = TIEntries.find(std::make_pair(TIName, Offset)); 413 outs() << (Entry == TIEntries.end() ? "null" : Entry->second) << '\n'; 414 }; 415 outs() << TIName << "[Flags]: " << TI.Flags << '\n'; 416 dumpThrowInfoFlag("Const", 1); 417 dumpThrowInfoFlag("Volatile", 2); 418 dumpThrowInfoSymbol("CleanupFn", 4); 419 dumpThrowInfoSymbol("ForwardCompat", 8); 420 dumpThrowInfoSymbol("CatchableTypeArray", 12); 421 } 422 for (const auto &CTAPair : CTAs) { 423 StringRef CTAName = CTAPair.first; 424 const CatchableTypeArray &CTA = CTAPair.second; 425 426 outs() << CTAName << "[NumEntries]: " << CTA.NumEntries << '\n'; 427 428 unsigned Idx = 0; 429 for (auto I = CTAEntries.lower_bound(std::make_pair(CTAName, 0)), 430 E = CTAEntries.upper_bound(std::make_pair(CTAName, UINT64_MAX)); 431 I != E; ++I) 432 outs() << CTAName << '[' << Idx++ << "]: " << I->second << '\n'; 433 } 434 for (const auto &CTPair : CTs) { 435 StringRef CTName = CTPair.first; 436 const CatchableType &CT = CTPair.second; 437 auto dumpCatchableTypeFlag = [&](const char *Name, uint32_t Flag) { 438 outs() << CTName << "[Flags." << Name 439 << "]: " << (CT.Flags & Flag ? "true" : "false") << '\n'; 440 }; 441 outs() << CTName << "[Flags]: " << CT.Flags << '\n'; 442 dumpCatchableTypeFlag("ScalarType", 1); 443 dumpCatchableTypeFlag("VirtualInheritance", 4); 444 outs() << CTName << "[TypeDescriptor]: " << CT.Symbols[0] << '\n'; 445 outs() << CTName << "[NonVirtualBaseAdjustmentOffset]: " 446 << CT.NonVirtualBaseAdjustmentOffset << '\n'; 447 outs() << CTName 448 << "[VirtualBasePointerOffset]: " << CT.VirtualBasePointerOffset 449 << '\n'; 450 outs() << CTName << "[VirtualBaseAdjustmentOffset]: " 451 << CT.VirtualBaseAdjustmentOffset << '\n'; 452 outs() << CTName << "[Size]: " << CT.Size << '\n'; 453 outs() << CTName 454 << "[CopyCtor]: " << (CT.Symbols[1].empty() ? "null" : CT.Symbols[1]) 455 << '\n'; 456 } 457 for (const auto &VTTPair : VTTEntries) { 458 StringRef VTTName = VTTPair.first.first; 459 uint64_t VTTOffset = VTTPair.first.second; 460 StringRef VTTEntry = VTTPair.second; 461 outs() << VTTName << '[' << VTTOffset << "]: " << VTTEntry << '\n'; 462 } 463 for (const auto &TIPair : TINames) { 464 StringRef TIName = TIPair.first; 465 outs() << TIName << ": " << TIPair.second << '\n'; 466 } 467 auto VTableSymI = VTableSymEntries.begin(); 468 auto VTableSymE = VTableSymEntries.end(); 469 auto VTableDataI = VTableDataEntries.begin(); 470 auto VTableDataE = VTableDataEntries.end(); 471 for (;;) { 472 bool SymDone = VTableSymI == VTableSymE; 473 bool DataDone = VTableDataI == VTableDataE; 474 if (SymDone && DataDone) 475 break; 476 if (!SymDone && (DataDone || VTableSymI->first < VTableDataI->first)) { 477 StringRef VTableName = VTableSymI->first.first; 478 uint64_t Offset = VTableSymI->first.second; 479 StringRef VTableEntry = VTableSymI->second; 480 outs() << VTableName << '[' << Offset << "]: "; 481 outs() << VTableEntry; 482 outs() << '\n'; 483 ++VTableSymI; 484 continue; 485 } 486 if (!DataDone && (SymDone || VTableDataI->first < VTableSymI->first)) { 487 StringRef VTableName = VTableDataI->first.first; 488 uint64_t Offset = VTableDataI->first.second; 489 int64_t VTableEntry = VTableDataI->second; 490 outs() << VTableName << '[' << Offset << "]: "; 491 outs() << VTableEntry; 492 outs() << '\n'; 493 ++VTableDataI; 494 continue; 495 } 496 } 497 } 498 499 static void dumpArchive(const Archive *Arc) { 500 Error Err = Error::success(); 501 for (auto &ArcC : Arc->children(Err)) { 502 Expected<std::unique_ptr<Binary>> ChildOrErr = ArcC.getAsBinary(); 503 if (!ChildOrErr) { 504 // Ignore non-object files. 505 if (auto E = isNotObjectErrorInvalidFileType(ChildOrErr.takeError())) { 506 std::string Buf; 507 raw_string_ostream OS(Buf); 508 logAllUnhandledErrors(std::move(E), OS); 509 OS.flush(); 510 reportError(Arc->getFileName(), Buf); 511 } 512 consumeError(ChildOrErr.takeError()); 513 continue; 514 } 515 516 if (ObjectFile *Obj = dyn_cast<ObjectFile>(&*ChildOrErr.get())) 517 dumpCXXData(Obj); 518 else 519 reportError(Arc->getFileName(), cxxdump_error::unrecognized_file_format); 520 } 521 if (Err) 522 error(std::move(Err)); 523 } 524 525 static void dumpInput(StringRef File) { 526 // Attempt to open the binary. 527 Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(File); 528 if (!BinaryOrErr) { 529 auto EC = errorToErrorCode(BinaryOrErr.takeError()); 530 reportError(File, EC); 531 return; 532 } 533 Binary &Binary = *BinaryOrErr.get().getBinary(); 534 535 if (Archive *Arc = dyn_cast<Archive>(&Binary)) 536 dumpArchive(Arc); 537 else if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary)) 538 dumpCXXData(Obj); 539 else 540 reportError(File, cxxdump_error::unrecognized_file_format); 541 } 542 543 int main(int argc, const char *argv[]) { 544 InitLLVM X(argc, argv); 545 546 // Initialize targets. 547 llvm::InitializeAllTargetInfos(); 548 549 // Register the target printer for --version. 550 cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion); 551 552 cl::ParseCommandLineOptions(argc, argv, "LLVM C++ ABI Data Dumper\n"); 553 554 // Default to stdin if no filename is specified. 555 if (opts::InputFilenames.size() == 0) 556 opts::InputFilenames.push_back("-"); 557 558 llvm::for_each(opts::InputFilenames, dumpInput); 559 560 return EXIT_SUCCESS; 561 } 562