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 <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 static int ReturnValue = EXIT_SUCCESS; 42 43 namespace llvm { 44 45 static bool error(std::error_code EC) { 46 if (!EC) 47 return false; 48 49 ReturnValue = EXIT_FAILURE; 50 outs() << "\nError reading file: " << EC.message() << ".\n"; 51 outs().flush(); 52 return true; 53 } 54 55 } // namespace llvm 56 57 static void reportError(StringRef Input, StringRef Message) { 58 if (Input == "-") 59 Input = "<stdin>"; 60 61 errs() << Input << ": " << Message << "\n"; 62 errs().flush(); 63 ReturnValue = EXIT_FAILURE; 64 } 65 66 static void reportError(StringRef Input, std::error_code EC) { 67 reportError(Input, EC.message()); 68 } 69 70 static SmallVectorImpl<SectionRef> &getRelocSections(const ObjectFile *Obj, 71 const SectionRef &Sec) { 72 static bool MappingDone = false; 73 static std::map<SectionRef, SmallVector<SectionRef, 1>> SectionRelocMap; 74 if (!MappingDone) { 75 for (const SectionRef &Section : Obj->sections()) { 76 section_iterator Sec2 = Section.getRelocatedSection(); 77 if (Sec2 != Obj->section_end()) 78 SectionRelocMap[*Sec2].push_back(Section); 79 } 80 MappingDone = true; 81 } 82 return SectionRelocMap[Sec]; 83 } 84 85 static bool collectRelocatedSymbols(const ObjectFile *Obj, 86 const SectionRef &Sec, uint64_t SecAddress, 87 uint64_t SymAddress, uint64_t SymSize, 88 StringRef *I, StringRef *E) { 89 uint64_t SymOffset = SymAddress - SecAddress; 90 uint64_t SymEnd = SymOffset + SymSize; 91 for (const SectionRef &SR : getRelocSections(Obj, Sec)) { 92 for (const object::RelocationRef &Reloc : SR.relocations()) { 93 if (I == E) 94 break; 95 const object::symbol_iterator RelocSymI = Reloc.getSymbol(); 96 if (RelocSymI == Obj->symbol_end()) 97 continue; 98 StringRef RelocSymName; 99 if (error(RelocSymI->getName(RelocSymName))) 100 return true; 101 uint64_t Offset; 102 if (error(Reloc.getOffset(Offset))) 103 return true; 104 if (Offset >= SymOffset && Offset < SymEnd) { 105 *I = RelocSymName; 106 ++I; 107 } 108 } 109 } 110 return false; 111 } 112 113 static bool collectRelocationOffsets( 114 const ObjectFile *Obj, const SectionRef &Sec, uint64_t SecAddress, 115 uint64_t SymAddress, uint64_t SymSize, StringRef SymName, 116 std::map<std::pair<StringRef, uint64_t>, StringRef> &Collection) { 117 uint64_t SymOffset = SymAddress - SecAddress; 118 uint64_t SymEnd = SymOffset + SymSize; 119 for (const SectionRef &SR : getRelocSections(Obj, Sec)) { 120 for (const object::RelocationRef &Reloc : SR.relocations()) { 121 const object::symbol_iterator RelocSymI = Reloc.getSymbol(); 122 if (RelocSymI == Obj->symbol_end()) 123 continue; 124 StringRef RelocSymName; 125 if (error(RelocSymI->getName(RelocSymName))) 126 return true; 127 uint64_t Offset; 128 if (error(Reloc.getOffset(Offset))) 129 return true; 130 if (Offset >= SymOffset && Offset < SymEnd) 131 Collection[std::make_pair(SymName, Offset - SymOffset)] = RelocSymName; 132 } 133 } 134 return false; 135 } 136 137 static void dumpCXXData(const ObjectFile *Obj) { 138 struct CompleteObjectLocator { 139 StringRef Symbols[2]; 140 ArrayRef<little32_t> Data; 141 }; 142 struct ClassHierarchyDescriptor { 143 StringRef Symbols[1]; 144 ArrayRef<little32_t> Data; 145 }; 146 struct BaseClassDescriptor { 147 StringRef Symbols[2]; 148 ArrayRef<little32_t> Data; 149 }; 150 struct TypeDescriptor { 151 StringRef Symbols[1]; 152 uint64_t AlwaysZero; 153 StringRef MangledName; 154 }; 155 struct ThrowInfo { 156 uint32_t Flags; 157 }; 158 struct CatchableTypeArray { 159 uint32_t NumEntries; 160 }; 161 struct CatchableType { 162 uint32_t Flags; 163 uint32_t NonVirtualBaseAdjustmentOffset; 164 int32_t VirtualBasePointerOffset; 165 uint32_t VirtualBaseAdjustmentOffset; 166 uint32_t Size; 167 StringRef Symbols[2]; 168 }; 169 std::map<std::pair<StringRef, uint64_t>, StringRef> VFTableEntries; 170 std::map<std::pair<StringRef, uint64_t>, StringRef> TIEntries; 171 std::map<std::pair<StringRef, uint64_t>, StringRef> CTAEntries; 172 std::map<StringRef, ArrayRef<little32_t>> VBTables; 173 std::map<StringRef, CompleteObjectLocator> COLs; 174 std::map<StringRef, ClassHierarchyDescriptor> CHDs; 175 std::map<std::pair<StringRef, uint64_t>, StringRef> BCAEntries; 176 std::map<StringRef, BaseClassDescriptor> BCDs; 177 std::map<StringRef, TypeDescriptor> TDs; 178 std::map<StringRef, ThrowInfo> TIs; 179 std::map<StringRef, CatchableTypeArray> CTAs; 180 std::map<StringRef, CatchableType> CTs; 181 182 std::map<std::pair<StringRef, uint64_t>, StringRef> VTableSymEntries; 183 std::map<std::pair<StringRef, uint64_t>, int64_t> VTableDataEntries; 184 std::map<std::pair<StringRef, uint64_t>, StringRef> VTTEntries; 185 std::map<StringRef, StringRef> TINames; 186 187 uint8_t BytesInAddress = Obj->getBytesInAddress(); 188 189 for (const object::SymbolRef &Sym : Obj->symbols()) { 190 StringRef SymName; 191 if (error(Sym.getName(SymName))) 192 return; 193 object::section_iterator SecI(Obj->section_begin()); 194 if (error(Sym.getSection(SecI))) 195 return; 196 // Skip external symbols. 197 if (SecI == Obj->section_end()) 198 continue; 199 const SectionRef &Sec = *SecI; 200 // Skip virtual or BSS sections. 201 if (Sec.isBSS() || Sec.isVirtual()) 202 continue; 203 StringRef SecContents; 204 if (error(Sec.getContents(SecContents))) 205 return; 206 uint64_t SymAddress, SymSize; 207 if (error(Sym.getAddress(SymAddress)) || error(Sym.getSize(SymSize))) 208 return; 209 uint64_t SecAddress = Sec.getAddress(); 210 uint64_t SecSize = Sec.getSize(); 211 uint64_t SymOffset = SymAddress - SecAddress; 212 StringRef SymContents = SecContents.substr(SymOffset, SymSize); 213 214 // VFTables in the MS-ABI start with '??_7' and are contained within their 215 // own COMDAT section. We then determine the contents of the VFTable by 216 // looking at each relocation in the section. 217 if (SymName.startswith("??_7")) { 218 // Each relocation either names a virtual method or a thunk. We note the 219 // offset into the section and the symbol used for the relocation. 220 collectRelocationOffsets(Obj, Sec, SecAddress, SecAddress, SecSize, 221 SymName, VFTableEntries); 222 } 223 // VBTables in the MS-ABI start with '??_8' and are filled with 32-bit 224 // offsets of virtual bases. 225 else if (SymName.startswith("??_8")) { 226 ArrayRef<little32_t> VBTableData( 227 reinterpret_cast<const little32_t *>(SymContents.data()), 228 SymContents.size() / sizeof(little32_t)); 229 VBTables[SymName] = VBTableData; 230 } 231 // Complete object locators in the MS-ABI start with '??_R4' 232 else if (SymName.startswith("??_R4")) { 233 CompleteObjectLocator COL; 234 COL.Data = ArrayRef<little32_t>( 235 reinterpret_cast<const little32_t *>(SymContents.data()), 3); 236 StringRef *I = std::begin(COL.Symbols), *E = std::end(COL.Symbols); 237 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 238 E)) 239 return; 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 = ArrayRef<little32_t>( 246 reinterpret_cast<const little32_t *>(SymContents.data()), 3); 247 StringRef *I = std::begin(CHD.Symbols), *E = std::end(CHD.Symbols); 248 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 249 E)) 250 return; 251 CHDs[SymName] = CHD; 252 } 253 // Class hierarchy descriptors in the MS-ABI start with '??_R2' 254 else if (SymName.startswith("??_R2")) { 255 // Each relocation names a base class descriptor. We note the offset into 256 // the section and the symbol used for the relocation. 257 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 258 SymName, BCAEntries); 259 } 260 // Base class descriptors in the MS-ABI start with '??_R1' 261 else if (SymName.startswith("??_R1")) { 262 BaseClassDescriptor BCD; 263 BCD.Data = ArrayRef<little32_t>( 264 reinterpret_cast<const little32_t *>(SymContents.data()) + 1, 5); 265 StringRef *I = std::begin(BCD.Symbols), *E = std::end(BCD.Symbols); 266 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 267 E)) 268 return; 269 BCDs[SymName] = BCD; 270 } 271 // Type descriptors in the MS-ABI start with '??_R0' 272 else if (SymName.startswith("??_R0")) { 273 const char *DataPtr = SymContents.drop_front(BytesInAddress).data(); 274 TypeDescriptor TD; 275 if (BytesInAddress == 8) 276 TD.AlwaysZero = *reinterpret_cast<const little64_t *>(DataPtr); 277 else 278 TD.AlwaysZero = *reinterpret_cast<const little32_t *>(DataPtr); 279 TD.MangledName = SymContents.drop_front(BytesInAddress * 2); 280 StringRef *I = std::begin(TD.Symbols), *E = std::end(TD.Symbols); 281 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 282 E)) 283 return; 284 TDs[SymName] = TD; 285 } 286 // Throw descriptors in the MS-ABI start with '_TI' 287 else if (SymName.startswith("_TI") || SymName.startswith("__TI")) { 288 ThrowInfo TI; 289 TI.Flags = *reinterpret_cast<const little32_t *>(SymContents.data()); 290 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 291 SymName, TIEntries); 292 TIs[SymName] = TI; 293 } 294 // Catchable type arrays in the MS-ABI start with _CTA or __CTA. 295 else if (SymName.startswith("_CTA") || SymName.startswith("__CTA")) { 296 CatchableTypeArray CTA; 297 CTA.NumEntries = 298 *reinterpret_cast<const little32_t *>(SymContents.data()); 299 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 300 SymName, CTAEntries); 301 CTAs[SymName] = CTA; 302 } 303 // Catchable types in the MS-ABI start with _CT or __CT. 304 else if (SymName.startswith("_CT") || SymName.startswith("__CT")) { 305 const little32_t *DataPtr = 306 reinterpret_cast<const little32_t *>(SymContents.data()); 307 CatchableType CT; 308 CT.Flags = DataPtr[0]; 309 CT.NonVirtualBaseAdjustmentOffset = DataPtr[2]; 310 CT.VirtualBasePointerOffset = DataPtr[3]; 311 CT.VirtualBaseAdjustmentOffset = DataPtr[4]; 312 CT.Size = DataPtr[5]; 313 StringRef *I = std::begin(CT.Symbols), *E = std::end(CT.Symbols); 314 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, 315 E)) 316 return; 317 CTs[SymName] = CT; 318 } 319 // Construction vtables in the Itanium ABI start with '_ZTT' or '__ZTT'. 320 else if (SymName.startswith("_ZTT") || SymName.startswith("__ZTT")) { 321 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 322 SymName, VTTEntries); 323 } 324 // Typeinfo names in the Itanium ABI start with '_ZTS' or '__ZTS'. 325 else if (SymName.startswith("_ZTS") || SymName.startswith("__ZTS")) { 326 TINames[SymName] = SymContents.slice(0, SymContents.find('\0')); 327 } 328 // Vtables in the Itanium ABI start with '_ZTV' or '__ZTV'. 329 else if (SymName.startswith("_ZTV") || SymName.startswith("__ZTV")) { 330 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize, 331 SymName, VTableSymEntries); 332 for (uint64_t SymOffI = 0; SymOffI < SymSize; SymOffI += BytesInAddress) { 333 auto Key = std::make_pair(SymName, SymOffI); 334 if (VTableSymEntries.count(Key)) 335 continue; 336 const char *DataPtr = 337 SymContents.substr(SymOffI, BytesInAddress).data(); 338 int64_t VData; 339 if (BytesInAddress == 8) 340 VData = *reinterpret_cast<const little64_t *>(DataPtr); 341 else 342 VData = *reinterpret_cast<const little32_t *>(DataPtr); 343 VTableDataEntries[Key] = VData; 344 } 345 } 346 // Typeinfo structures in the Itanium ABI start with '_ZTI' or '__ZTI'. 347 else if (SymName.startswith("_ZTI") || SymName.startswith("__ZTI")) { 348 // FIXME: Do something with these! 349 } 350 } 351 for (const auto &VFTableEntry : VFTableEntries) { 352 StringRef VFTableName = VFTableEntry.first.first; 353 uint64_t Offset = VFTableEntry.first.second; 354 StringRef SymName = VFTableEntry.second; 355 outs() << VFTableName << '[' << Offset << "]: " << SymName << '\n'; 356 } 357 for (const std::pair<StringRef, ArrayRef<little32_t>> &VBTable : VBTables) { 358 StringRef VBTableName = VBTable.first; 359 uint32_t Idx = 0; 360 for (little32_t Offset : VBTable.second) { 361 outs() << VBTableName << '[' << Idx << "]: " << Offset << '\n'; 362 Idx += sizeof(Offset); 363 } 364 } 365 for (const std::pair<StringRef, CompleteObjectLocator> &COLPair : COLs) { 366 StringRef COLName = COLPair.first; 367 const CompleteObjectLocator &COL = COLPair.second; 368 outs() << COLName << "[IsImageRelative]: " << COL.Data[0] << '\n'; 369 outs() << COLName << "[OffsetToTop]: " << COL.Data[1] << '\n'; 370 outs() << COLName << "[VFPtrOffset]: " << COL.Data[2] << '\n'; 371 outs() << COLName << "[TypeDescriptor]: " << COL.Symbols[0] << '\n'; 372 outs() << COLName << "[ClassHierarchyDescriptor]: " << COL.Symbols[1] 373 << '\n'; 374 } 375 for (const std::pair<StringRef, ClassHierarchyDescriptor> &CHDPair : CHDs) { 376 StringRef CHDName = CHDPair.first; 377 const ClassHierarchyDescriptor &CHD = CHDPair.second; 378 outs() << CHDName << "[AlwaysZero]: " << CHD.Data[0] << '\n'; 379 outs() << CHDName << "[Flags]: " << CHD.Data[1] << '\n'; 380 outs() << CHDName << "[NumClasses]: " << CHD.Data[2] << '\n'; 381 outs() << CHDName << "[BaseClassArray]: " << CHD.Symbols[0] << '\n'; 382 } 383 for (const std::pair<std::pair<StringRef, uint64_t>, StringRef> &BCAEntry : 384 BCAEntries) { 385 StringRef BCAName = BCAEntry.first.first; 386 uint64_t Offset = BCAEntry.first.second; 387 StringRef SymName = BCAEntry.second; 388 outs() << BCAName << '[' << Offset << "]: " << SymName << '\n'; 389 } 390 for (const std::pair<StringRef, BaseClassDescriptor> &BCDPair : BCDs) { 391 StringRef BCDName = BCDPair.first; 392 const BaseClassDescriptor &BCD = BCDPair.second; 393 outs() << BCDName << "[TypeDescriptor]: " << BCD.Symbols[0] << '\n'; 394 outs() << BCDName << "[NumBases]: " << BCD.Data[0] << '\n'; 395 outs() << BCDName << "[OffsetInVBase]: " << BCD.Data[1] << '\n'; 396 outs() << BCDName << "[VBPtrOffset]: " << BCD.Data[2] << '\n'; 397 outs() << BCDName << "[OffsetInVBTable]: " << BCD.Data[3] << '\n'; 398 outs() << BCDName << "[Flags]: " << BCD.Data[4] << '\n'; 399 outs() << BCDName << "[ClassHierarchyDescriptor]: " << BCD.Symbols[1] 400 << '\n'; 401 } 402 for (const std::pair<StringRef, TypeDescriptor> &TDPair : TDs) { 403 StringRef TDName = TDPair.first; 404 const TypeDescriptor &TD = TDPair.second; 405 outs() << TDName << "[VFPtr]: " << TD.Symbols[0] << '\n'; 406 outs() << TDName << "[AlwaysZero]: " << TD.AlwaysZero << '\n'; 407 outs() << TDName << "[MangledName]: "; 408 outs().write_escaped(TD.MangledName.rtrim(StringRef("\0", 1)), 409 /*UseHexEscapes=*/true) 410 << '\n'; 411 } 412 for (const std::pair<StringRef, ThrowInfo> &TIPair : TIs) { 413 StringRef TIName = TIPair.first; 414 const ThrowInfo &TI = TIPair.second; 415 auto dumpThrowInfoFlag = [&](const char *Name, uint32_t Flag) { 416 outs() << TIName << "[Flags." << Name 417 << "]: " << (TI.Flags & Flag ? "true" : "false") << '\n'; 418 }; 419 auto dumpThrowInfoSymbol = [&](const char *Name, int Offset) { 420 outs() << TIName << '[' << Name << "]: "; 421 auto Entry = TIEntries.find(std::make_pair(TIName, Offset)); 422 outs() << (Entry == TIEntries.end() ? "null" : Entry->second) << '\n'; 423 }; 424 outs() << TIName << "[Flags]: " << TI.Flags << '\n'; 425 dumpThrowInfoFlag("Const", 1); 426 dumpThrowInfoFlag("Volatile", 2); 427 dumpThrowInfoSymbol("CleanupFn", 4); 428 dumpThrowInfoSymbol("ForwardCompat", 8); 429 dumpThrowInfoSymbol("CatchableTypeArray", 12); 430 } 431 for (const std::pair<StringRef, CatchableTypeArray> &CTAPair : CTAs) { 432 StringRef CTAName = CTAPair.first; 433 const CatchableTypeArray &CTA = CTAPair.second; 434 435 outs() << CTAName << "[NumEntries]: " << CTA.NumEntries << '\n'; 436 437 unsigned Idx = 0; 438 for (auto I = CTAEntries.lower_bound(std::make_pair(CTAName, 0)), 439 E = CTAEntries.upper_bound(std::make_pair(CTAName, UINT64_MAX)); 440 I != E; ++I) 441 outs() << CTAName << '[' << Idx++ << "]: " << I->second << '\n'; 442 } 443 for (const std::pair<StringRef, CatchableType> &CTPair : CTs) { 444 StringRef CTName = CTPair.first; 445 const CatchableType &CT = CTPair.second; 446 auto dumpCatchableTypeFlag = [&](const char *Name, uint32_t Flag) { 447 outs() << CTName << "[Flags." << Name 448 << "]: " << (CT.Flags & Flag ? "true" : "false") << '\n'; 449 }; 450 outs() << CTName << "[Flags]: " << CT.Flags << '\n'; 451 dumpCatchableTypeFlag("ScalarType", 1); 452 dumpCatchableTypeFlag("VirtualInheritance", 4); 453 outs() << CTName << "[TypeDescriptor]: " << CT.Symbols[0] << '\n'; 454 outs() << CTName << "[NonVirtualBaseAdjustmentOffset]: " 455 << CT.NonVirtualBaseAdjustmentOffset << '\n'; 456 outs() << CTName 457 << "[VirtualBasePointerOffset]: " << CT.VirtualBasePointerOffset 458 << '\n'; 459 outs() << CTName << "[VirtualBaseAdjustmentOffset]: " 460 << CT.VirtualBaseAdjustmentOffset << '\n'; 461 outs() << CTName << "[Size]: " << CT.Size << '\n'; 462 outs() << CTName 463 << "[CopyCtor]: " << (CT.Symbols[1].empty() ? "null" : CT.Symbols[1]) 464 << '\n'; 465 } 466 for (const std::pair<std::pair<StringRef, uint64_t>, StringRef> &VTTPair : 467 VTTEntries) { 468 StringRef VTTName = VTTPair.first.first; 469 uint64_t VTTOffset = VTTPair.first.second; 470 StringRef VTTEntry = VTTPair.second; 471 outs() << VTTName << '[' << VTTOffset << "]: " << VTTEntry << '\n'; 472 } 473 for (const std::pair<StringRef, StringRef> &TIPair : TINames) { 474 StringRef TIName = TIPair.first; 475 outs() << TIName << ": " << TIPair.second << '\n'; 476 } 477 auto VTableSymI = VTableSymEntries.begin(); 478 auto VTableSymE = VTableSymEntries.end(); 479 auto VTableDataI = VTableDataEntries.begin(); 480 auto VTableDataE = VTableDataEntries.end(); 481 for (;;) { 482 bool SymDone = VTableSymI == VTableSymE; 483 bool DataDone = VTableDataI == VTableDataE; 484 if (SymDone && DataDone) 485 break; 486 if (!SymDone && (DataDone || VTableSymI->first < VTableDataI->first)) { 487 StringRef VTableName = VTableSymI->first.first; 488 uint64_t Offset = VTableSymI->first.second; 489 StringRef VTableEntry = VTableSymI->second; 490 outs() << VTableName << '[' << Offset << "]: "; 491 outs() << VTableEntry; 492 outs() << '\n'; 493 ++VTableSymI; 494 continue; 495 } 496 if (!DataDone && (SymDone || VTableDataI->first < VTableSymI->first)) { 497 StringRef VTableName = VTableDataI->first.first; 498 uint64_t Offset = VTableDataI->first.second; 499 int64_t VTableEntry = VTableDataI->second; 500 outs() << VTableName << '[' << Offset << "]: "; 501 outs() << VTableEntry; 502 outs() << '\n'; 503 ++VTableDataI; 504 continue; 505 } 506 } 507 } 508 509 static void dumpArchive(const Archive *Arc) { 510 for (const Archive::Child &ArcC : Arc->children()) { 511 ErrorOr<std::unique_ptr<Binary>> ChildOrErr = ArcC.getAsBinary(); 512 if (std::error_code EC = ChildOrErr.getError()) { 513 // Ignore non-object files. 514 if (EC != object_error::invalid_file_type) 515 reportError(Arc->getFileName(), EC.message()); 516 continue; 517 } 518 519 if (ObjectFile *Obj = dyn_cast<ObjectFile>(&*ChildOrErr.get())) 520 dumpCXXData(Obj); 521 else 522 reportError(Arc->getFileName(), cxxdump_error::unrecognized_file_format); 523 } 524 } 525 526 static void dumpInput(StringRef File) { 527 // If file isn't stdin, check that it exists. 528 if (File != "-" && !sys::fs::exists(File)) { 529 reportError(File, cxxdump_error::file_not_found); 530 return; 531 } 532 533 // Attempt to open the binary. 534 ErrorOr<OwningBinary<Binary>> BinaryOrErr = createBinary(File); 535 if (std::error_code EC = BinaryOrErr.getError()) { 536 reportError(File, EC); 537 return; 538 } 539 Binary &Binary = *BinaryOrErr.get().getBinary(); 540 541 if (Archive *Arc = dyn_cast<Archive>(&Binary)) 542 dumpArchive(Arc); 543 else if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary)) 544 dumpCXXData(Obj); 545 else 546 reportError(File, cxxdump_error::unrecognized_file_format); 547 } 548 549 int main(int argc, const char *argv[]) { 550 sys::PrintStackTraceOnErrorSignal(); 551 PrettyStackTraceProgram X(argc, argv); 552 llvm_shutdown_obj Y; 553 554 // Initialize targets. 555 llvm::InitializeAllTargetInfos(); 556 557 // Register the target printer for --version. 558 cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion); 559 560 cl::ParseCommandLineOptions(argc, argv, "LLVM C++ ABI Data Dumper\n"); 561 562 // Default to stdin if no filename is specified. 563 if (opts::InputFilenames.size() == 0) 564 opts::InputFilenames.push_back("-"); 565 566 std::for_each(opts::InputFilenames.begin(), opts::InputFilenames.end(), 567 dumpInput); 568 569 return ReturnValue; 570 } 571