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- //===- llvm-cxxdump.cpp - Dump C++ data in an Object File -------*- C++ -*-===//
- //
- // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
- // See https://llvm.org/LICENSE.txt for license information.
- // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
- //
- //===----------------------------------------------------------------------===//
- //
- // Dumps C++ data resident in object files and archives.
- //
- //===----------------------------------------------------------------------===//
- #include "llvm-cxxdump.h"
- #include "Error.h"
- #include "llvm/ADT/ArrayRef.h"
- #include "llvm/Object/Archive.h"
- #include "llvm/Object/ObjectFile.h"
- #include "llvm/Object/SymbolSize.h"
- #include "llvm/Support/Debug.h"
- #include "llvm/Support/Endian.h"
- #include "llvm/Support/FileSystem.h"
- #include "llvm/Support/InitLLVM.h"
- #include "llvm/Support/TargetRegistry.h"
- #include "llvm/Support/TargetSelect.h"
- #include "llvm/Support/WithColor.h"
- #include "llvm/Support/raw_ostream.h"
- #include <map>
- #include <string>
- #include <system_error>
- using namespace llvm;
- using namespace llvm::object;
- using namespace llvm::support;
- namespace opts {
- cl::list<std::string> InputFilenames(cl::Positional,
- cl::desc("<input object files>"),
- cl::ZeroOrMore);
- } // namespace opts
- namespace llvm {
- static void error(std::error_code EC) {
- if (!EC)
- return;
- WithColor::error(outs(), "") << "reading file: " << EC.message() << ".\n";
- outs().flush();
- exit(1);
- }
- LLVM_ATTRIBUTE_NORETURN static void error(Error Err) {
- logAllUnhandledErrors(std::move(Err), WithColor::error(outs()),
- "reading file: ");
- outs().flush();
- exit(1);
- }
- template <typename T>
- T unwrapOrError(Expected<T> EO) {
- if (!EO)
- error(EO.takeError());
- return std::move(*EO);
- }
- } // namespace llvm
- static void reportError(StringRef Input, StringRef Message) {
- if (Input == "-")
- Input = "<stdin>";
- WithColor::error(errs(), Input) << Message << "\n";
- errs().flush();
- exit(1);
- }
- static void reportError(StringRef Input, std::error_code EC) {
- reportError(Input, EC.message());
- }
- static std::map<SectionRef, SmallVector<SectionRef, 1>> SectionRelocMap;
- static void collectRelocatedSymbols(const ObjectFile *Obj,
- const SectionRef &Sec, uint64_t SecAddress,
- uint64_t SymAddress, uint64_t SymSize,
- StringRef *I, StringRef *E) {
- uint64_t SymOffset = SymAddress - SecAddress;
- uint64_t SymEnd = SymOffset + SymSize;
- for (const SectionRef &SR : SectionRelocMap[Sec]) {
- for (const object::RelocationRef &Reloc : SR.relocations()) {
- if (I == E)
- break;
- const object::symbol_iterator RelocSymI = Reloc.getSymbol();
- if (RelocSymI == Obj->symbol_end())
- continue;
- Expected<StringRef> RelocSymName = RelocSymI->getName();
- error(errorToErrorCode(RelocSymName.takeError()));
- uint64_t Offset = Reloc.getOffset();
- if (Offset >= SymOffset && Offset < SymEnd) {
- *I = *RelocSymName;
- ++I;
- }
- }
- }
- }
- static void collectRelocationOffsets(
- const ObjectFile *Obj, const SectionRef &Sec, uint64_t SecAddress,
- uint64_t SymAddress, uint64_t SymSize, StringRef SymName,
- std::map<std::pair<StringRef, uint64_t>, StringRef> &Collection) {
- uint64_t SymOffset = SymAddress - SecAddress;
- uint64_t SymEnd = SymOffset + SymSize;
- for (const SectionRef &SR : SectionRelocMap[Sec]) {
- for (const object::RelocationRef &Reloc : SR.relocations()) {
- const object::symbol_iterator RelocSymI = Reloc.getSymbol();
- if (RelocSymI == Obj->symbol_end())
- continue;
- Expected<StringRef> RelocSymName = RelocSymI->getName();
- error(errorToErrorCode(RelocSymName.takeError()));
- uint64_t Offset = Reloc.getOffset();
- if (Offset >= SymOffset && Offset < SymEnd)
- Collection[std::make_pair(SymName, Offset - SymOffset)] = *RelocSymName;
- }
- }
- }
- static void dumpCXXData(const ObjectFile *Obj) {
- struct CompleteObjectLocator {
- StringRef Symbols[2];
- ArrayRef<little32_t> Data;
- };
- struct ClassHierarchyDescriptor {
- StringRef Symbols[1];
- ArrayRef<little32_t> Data;
- };
- struct BaseClassDescriptor {
- StringRef Symbols[2];
- ArrayRef<little32_t> Data;
- };
- struct TypeDescriptor {
- StringRef Symbols[1];
- uint64_t AlwaysZero;
- StringRef MangledName;
- };
- struct ThrowInfo {
- uint32_t Flags;
- };
- struct CatchableTypeArray {
- uint32_t NumEntries;
- };
- struct CatchableType {
- uint32_t Flags;
- uint32_t NonVirtualBaseAdjustmentOffset;
- int32_t VirtualBasePointerOffset;
- uint32_t VirtualBaseAdjustmentOffset;
- uint32_t Size;
- StringRef Symbols[2];
- };
- std::map<std::pair<StringRef, uint64_t>, StringRef> VFTableEntries;
- std::map<std::pair<StringRef, uint64_t>, StringRef> TIEntries;
- std::map<std::pair<StringRef, uint64_t>, StringRef> CTAEntries;
- std::map<StringRef, ArrayRef<little32_t>> VBTables;
- std::map<StringRef, CompleteObjectLocator> COLs;
- std::map<StringRef, ClassHierarchyDescriptor> CHDs;
- std::map<std::pair<StringRef, uint64_t>, StringRef> BCAEntries;
- std::map<StringRef, BaseClassDescriptor> BCDs;
- std::map<StringRef, TypeDescriptor> TDs;
- std::map<StringRef, ThrowInfo> TIs;
- std::map<StringRef, CatchableTypeArray> CTAs;
- std::map<StringRef, CatchableType> CTs;
- std::map<std::pair<StringRef, uint64_t>, StringRef> VTableSymEntries;
- std::map<std::pair<StringRef, uint64_t>, int64_t> VTableDataEntries;
- std::map<std::pair<StringRef, uint64_t>, StringRef> VTTEntries;
- std::map<StringRef, StringRef> TINames;
- SectionRelocMap.clear();
- for (const SectionRef &Section : Obj->sections()) {
- Expected<section_iterator> ErrOrSec = Section.getRelocatedSection();
- if (!ErrOrSec)
- error(ErrOrSec.takeError());
- section_iterator Sec2 = *ErrOrSec;
- if (Sec2 != Obj->section_end())
- SectionRelocMap[*Sec2].push_back(Section);
- }
- uint8_t BytesInAddress = Obj->getBytesInAddress();
- std::vector<std::pair<SymbolRef, uint64_t>> SymAddr =
- object::computeSymbolSizes(*Obj);
- for (auto &P : SymAddr) {
- object::SymbolRef Sym = P.first;
- uint64_t SymSize = P.second;
- Expected<StringRef> SymNameOrErr = Sym.getName();
- error(errorToErrorCode(SymNameOrErr.takeError()));
- StringRef SymName = *SymNameOrErr;
- Expected<object::section_iterator> SecIOrErr = Sym.getSection();
- error(errorToErrorCode(SecIOrErr.takeError()));
- object::section_iterator SecI = *SecIOrErr;
- // Skip external symbols.
- if (SecI == Obj->section_end())
- continue;
- const SectionRef &Sec = *SecI;
- // Skip virtual or BSS sections.
- if (Sec.isBSS() || Sec.isVirtual())
- continue;
- StringRef SecContents = unwrapOrError(Sec.getContents());
- Expected<uint64_t> SymAddressOrErr = Sym.getAddress();
- error(errorToErrorCode(SymAddressOrErr.takeError()));
- uint64_t SymAddress = *SymAddressOrErr;
- uint64_t SecAddress = Sec.getAddress();
- uint64_t SecSize = Sec.getSize();
- uint64_t SymOffset = SymAddress - SecAddress;
- StringRef SymContents = SecContents.substr(SymOffset, SymSize);
- // VFTables in the MS-ABI start with '??_7' and are contained within their
- // own COMDAT section. We then determine the contents of the VFTable by
- // looking at each relocation in the section.
- if (SymName.startswith("??_7")) {
- // Each relocation either names a virtual method or a thunk. We note the
- // offset into the section and the symbol used for the relocation.
- collectRelocationOffsets(Obj, Sec, SecAddress, SecAddress, SecSize,
- SymName, VFTableEntries);
- }
- // VBTables in the MS-ABI start with '??_8' and are filled with 32-bit
- // offsets of virtual bases.
- else if (SymName.startswith("??_8")) {
- ArrayRef<little32_t> VBTableData(
- reinterpret_cast<const little32_t *>(SymContents.data()),
- SymContents.size() / sizeof(little32_t));
- VBTables[SymName] = VBTableData;
- }
- // Complete object locators in the MS-ABI start with '??_R4'
- else if (SymName.startswith("??_R4")) {
- CompleteObjectLocator COL;
- COL.Data = makeArrayRef(
- reinterpret_cast<const little32_t *>(SymContents.data()), 3);
- StringRef *I = std::begin(COL.Symbols), *E = std::end(COL.Symbols);
- collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E);
- COLs[SymName] = COL;
- }
- // Class hierarchy descriptors in the MS-ABI start with '??_R3'
- else if (SymName.startswith("??_R3")) {
- ClassHierarchyDescriptor CHD;
- CHD.Data = makeArrayRef(
- reinterpret_cast<const little32_t *>(SymContents.data()), 3);
- StringRef *I = std::begin(CHD.Symbols), *E = std::end(CHD.Symbols);
- collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E);
- CHDs[SymName] = CHD;
- }
- // Class hierarchy descriptors in the MS-ABI start with '??_R2'
- else if (SymName.startswith("??_R2")) {
- // Each relocation names a base class descriptor. We note the offset into
- // the section and the symbol used for the relocation.
- collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize,
- SymName, BCAEntries);
- }
- // Base class descriptors in the MS-ABI start with '??_R1'
- else if (SymName.startswith("??_R1")) {
- BaseClassDescriptor BCD;
- BCD.Data = makeArrayRef(
- reinterpret_cast<const little32_t *>(SymContents.data()) + 1, 5);
- StringRef *I = std::begin(BCD.Symbols), *E = std::end(BCD.Symbols);
- collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E);
- BCDs[SymName] = BCD;
- }
- // Type descriptors in the MS-ABI start with '??_R0'
- else if (SymName.startswith("??_R0")) {
- const char *DataPtr = SymContents.drop_front(BytesInAddress).data();
- TypeDescriptor TD;
- if (BytesInAddress == 8)
- TD.AlwaysZero = *reinterpret_cast<const little64_t *>(DataPtr);
- else
- TD.AlwaysZero = *reinterpret_cast<const little32_t *>(DataPtr);
- TD.MangledName = SymContents.drop_front(BytesInAddress * 2);
- StringRef *I = std::begin(TD.Symbols), *E = std::end(TD.Symbols);
- collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E);
- TDs[SymName] = TD;
- }
- // Throw descriptors in the MS-ABI start with '_TI'
- else if (SymName.startswith("_TI") || SymName.startswith("__TI")) {
- ThrowInfo TI;
- TI.Flags = *reinterpret_cast<const little32_t *>(SymContents.data());
- collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize,
- SymName, TIEntries);
- TIs[SymName] = TI;
- }
- // Catchable type arrays in the MS-ABI start with _CTA or __CTA.
- else if (SymName.startswith("_CTA") || SymName.startswith("__CTA")) {
- CatchableTypeArray CTA;
- CTA.NumEntries =
- *reinterpret_cast<const little32_t *>(SymContents.data());
- collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize,
- SymName, CTAEntries);
- CTAs[SymName] = CTA;
- }
- // Catchable types in the MS-ABI start with _CT or __CT.
- else if (SymName.startswith("_CT") || SymName.startswith("__CT")) {
- const little32_t *DataPtr =
- reinterpret_cast<const little32_t *>(SymContents.data());
- CatchableType CT;
- CT.Flags = DataPtr[0];
- CT.NonVirtualBaseAdjustmentOffset = DataPtr[2];
- CT.VirtualBasePointerOffset = DataPtr[3];
- CT.VirtualBaseAdjustmentOffset = DataPtr[4];
- CT.Size = DataPtr[5];
- StringRef *I = std::begin(CT.Symbols), *E = std::end(CT.Symbols);
- collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E);
- CTs[SymName] = CT;
- }
- // Construction vtables in the Itanium ABI start with '_ZTT' or '__ZTT'.
- else if (SymName.startswith("_ZTT") || SymName.startswith("__ZTT")) {
- collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize,
- SymName, VTTEntries);
- }
- // Typeinfo names in the Itanium ABI start with '_ZTS' or '__ZTS'.
- else if (SymName.startswith("_ZTS") || SymName.startswith("__ZTS")) {
- TINames[SymName] = SymContents.slice(0, SymContents.find('\0'));
- }
- // Vtables in the Itanium ABI start with '_ZTV' or '__ZTV'.
- else if (SymName.startswith("_ZTV") || SymName.startswith("__ZTV")) {
- collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize,
- SymName, VTableSymEntries);
- for (uint64_t SymOffI = 0; SymOffI < SymSize; SymOffI += BytesInAddress) {
- auto Key = std::make_pair(SymName, SymOffI);
- if (VTableSymEntries.count(Key))
- continue;
- const char *DataPtr =
- SymContents.substr(SymOffI, BytesInAddress).data();
- int64_t VData;
- if (BytesInAddress == 8)
- VData = *reinterpret_cast<const little64_t *>(DataPtr);
- else
- VData = *reinterpret_cast<const little32_t *>(DataPtr);
- VTableDataEntries[Key] = VData;
- }
- }
- // Typeinfo structures in the Itanium ABI start with '_ZTI' or '__ZTI'.
- else if (SymName.startswith("_ZTI") || SymName.startswith("__ZTI")) {
- // FIXME: Do something with these!
- }
- }
- for (const auto &VFTableEntry : VFTableEntries) {
- StringRef VFTableName = VFTableEntry.first.first;
- uint64_t Offset = VFTableEntry.first.second;
- StringRef SymName = VFTableEntry.second;
- outs() << VFTableName << '[' << Offset << "]: " << SymName << '\n';
- }
- for (const auto &VBTable : VBTables) {
- StringRef VBTableName = VBTable.first;
- uint32_t Idx = 0;
- for (little32_t Offset : VBTable.second) {
- outs() << VBTableName << '[' << Idx << "]: " << Offset << '\n';
- Idx += sizeof(Offset);
- }
- }
- for (const auto &COLPair : COLs) {
- StringRef COLName = COLPair.first;
- const CompleteObjectLocator &COL = COLPair.second;
- outs() << COLName << "[IsImageRelative]: " << COL.Data[0] << '\n';
- outs() << COLName << "[OffsetToTop]: " << COL.Data[1] << '\n';
- outs() << COLName << "[VFPtrOffset]: " << COL.Data[2] << '\n';
- outs() << COLName << "[TypeDescriptor]: " << COL.Symbols[0] << '\n';
- outs() << COLName << "[ClassHierarchyDescriptor]: " << COL.Symbols[1]
- << '\n';
- }
- for (const auto &CHDPair : CHDs) {
- StringRef CHDName = CHDPair.first;
- const ClassHierarchyDescriptor &CHD = CHDPair.second;
- outs() << CHDName << "[AlwaysZero]: " << CHD.Data[0] << '\n';
- outs() << CHDName << "[Flags]: " << CHD.Data[1] << '\n';
- outs() << CHDName << "[NumClasses]: " << CHD.Data[2] << '\n';
- outs() << CHDName << "[BaseClassArray]: " << CHD.Symbols[0] << '\n';
- }
- for (const auto &BCAEntry : BCAEntries) {
- StringRef BCAName = BCAEntry.first.first;
- uint64_t Offset = BCAEntry.first.second;
- StringRef SymName = BCAEntry.second;
- outs() << BCAName << '[' << Offset << "]: " << SymName << '\n';
- }
- for (const auto &BCDPair : BCDs) {
- StringRef BCDName = BCDPair.first;
- const BaseClassDescriptor &BCD = BCDPair.second;
- outs() << BCDName << "[TypeDescriptor]: " << BCD.Symbols[0] << '\n';
- outs() << BCDName << "[NumBases]: " << BCD.Data[0] << '\n';
- outs() << BCDName << "[OffsetInVBase]: " << BCD.Data[1] << '\n';
- outs() << BCDName << "[VBPtrOffset]: " << BCD.Data[2] << '\n';
- outs() << BCDName << "[OffsetInVBTable]: " << BCD.Data[3] << '\n';
- outs() << BCDName << "[Flags]: " << BCD.Data[4] << '\n';
- outs() << BCDName << "[ClassHierarchyDescriptor]: " << BCD.Symbols[1]
- << '\n';
- }
- for (const auto &TDPair : TDs) {
- StringRef TDName = TDPair.first;
- const TypeDescriptor &TD = TDPair.second;
- outs() << TDName << "[VFPtr]: " << TD.Symbols[0] << '\n';
- outs() << TDName << "[AlwaysZero]: " << TD.AlwaysZero << '\n';
- outs() << TDName << "[MangledName]: ";
- outs().write_escaped(TD.MangledName.rtrim(StringRef("\0", 1)),
- /*UseHexEscapes=*/true)
- << '\n';
- }
- for (const auto &TIPair : TIs) {
- StringRef TIName = TIPair.first;
- const ThrowInfo &TI = TIPair.second;
- auto dumpThrowInfoFlag = [&](const char *Name, uint32_t Flag) {
- outs() << TIName << "[Flags." << Name
- << "]: " << (TI.Flags & Flag ? "true" : "false") << '\n';
- };
- auto dumpThrowInfoSymbol = [&](const char *Name, int Offset) {
- outs() << TIName << '[' << Name << "]: ";
- auto Entry = TIEntries.find(std::make_pair(TIName, Offset));
- outs() << (Entry == TIEntries.end() ? "null" : Entry->second) << '\n';
- };
- outs() << TIName << "[Flags]: " << TI.Flags << '\n';
- dumpThrowInfoFlag("Const", 1);
- dumpThrowInfoFlag("Volatile", 2);
- dumpThrowInfoSymbol("CleanupFn", 4);
- dumpThrowInfoSymbol("ForwardCompat", 8);
- dumpThrowInfoSymbol("CatchableTypeArray", 12);
- }
- for (const auto &CTAPair : CTAs) {
- StringRef CTAName = CTAPair.first;
- const CatchableTypeArray &CTA = CTAPair.second;
- outs() << CTAName << "[NumEntries]: " << CTA.NumEntries << '\n';
- unsigned Idx = 0;
- for (auto I = CTAEntries.lower_bound(std::make_pair(CTAName, 0)),
- E = CTAEntries.upper_bound(std::make_pair(CTAName, UINT64_MAX));
- I != E; ++I)
- outs() << CTAName << '[' << Idx++ << "]: " << I->second << '\n';
- }
- for (const auto &CTPair : CTs) {
- StringRef CTName = CTPair.first;
- const CatchableType &CT = CTPair.second;
- auto dumpCatchableTypeFlag = [&](const char *Name, uint32_t Flag) {
- outs() << CTName << "[Flags." << Name
- << "]: " << (CT.Flags & Flag ? "true" : "false") << '\n';
- };
- outs() << CTName << "[Flags]: " << CT.Flags << '\n';
- dumpCatchableTypeFlag("ScalarType", 1);
- dumpCatchableTypeFlag("VirtualInheritance", 4);
- outs() << CTName << "[TypeDescriptor]: " << CT.Symbols[0] << '\n';
- outs() << CTName << "[NonVirtualBaseAdjustmentOffset]: "
- << CT.NonVirtualBaseAdjustmentOffset << '\n';
- outs() << CTName
- << "[VirtualBasePointerOffset]: " << CT.VirtualBasePointerOffset
- << '\n';
- outs() << CTName << "[VirtualBaseAdjustmentOffset]: "
- << CT.VirtualBaseAdjustmentOffset << '\n';
- outs() << CTName << "[Size]: " << CT.Size << '\n';
- outs() << CTName
- << "[CopyCtor]: " << (CT.Symbols[1].empty() ? "null" : CT.Symbols[1])
- << '\n';
- }
- for (const auto &VTTPair : VTTEntries) {
- StringRef VTTName = VTTPair.first.first;
- uint64_t VTTOffset = VTTPair.first.second;
- StringRef VTTEntry = VTTPair.second;
- outs() << VTTName << '[' << VTTOffset << "]: " << VTTEntry << '\n';
- }
- for (const auto &TIPair : TINames) {
- StringRef TIName = TIPair.first;
- outs() << TIName << ": " << TIPair.second << '\n';
- }
- auto VTableSymI = VTableSymEntries.begin();
- auto VTableSymE = VTableSymEntries.end();
- auto VTableDataI = VTableDataEntries.begin();
- auto VTableDataE = VTableDataEntries.end();
- for (;;) {
- bool SymDone = VTableSymI == VTableSymE;
- bool DataDone = VTableDataI == VTableDataE;
- if (SymDone && DataDone)
- break;
- if (!SymDone && (DataDone || VTableSymI->first < VTableDataI->first)) {
- StringRef VTableName = VTableSymI->first.first;
- uint64_t Offset = VTableSymI->first.second;
- StringRef VTableEntry = VTableSymI->second;
- outs() << VTableName << '[' << Offset << "]: ";
- outs() << VTableEntry;
- outs() << '\n';
- ++VTableSymI;
- continue;
- }
- if (!DataDone && (SymDone || VTableDataI->first < VTableSymI->first)) {
- StringRef VTableName = VTableDataI->first.first;
- uint64_t Offset = VTableDataI->first.second;
- int64_t VTableEntry = VTableDataI->second;
- outs() << VTableName << '[' << Offset << "]: ";
- outs() << VTableEntry;
- outs() << '\n';
- ++VTableDataI;
- continue;
- }
- }
- }
- static void dumpArchive(const Archive *Arc) {
- Error Err = Error::success();
- for (auto &ArcC : Arc->children(Err)) {
- Expected<std::unique_ptr<Binary>> ChildOrErr = ArcC.getAsBinary();
- if (!ChildOrErr) {
- // Ignore non-object files.
- if (auto E = isNotObjectErrorInvalidFileType(ChildOrErr.takeError())) {
- std::string Buf;
- raw_string_ostream OS(Buf);
- logAllUnhandledErrors(std::move(E), OS);
- OS.flush();
- reportError(Arc->getFileName(), Buf);
- }
- consumeError(ChildOrErr.takeError());
- continue;
- }
- if (ObjectFile *Obj = dyn_cast<ObjectFile>(&*ChildOrErr.get()))
- dumpCXXData(Obj);
- else
- reportError(Arc->getFileName(), cxxdump_error::unrecognized_file_format);
- }
- if (Err)
- error(std::move(Err));
- }
- static void dumpInput(StringRef File) {
- // Attempt to open the binary.
- Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(File);
- if (!BinaryOrErr) {
- auto EC = errorToErrorCode(BinaryOrErr.takeError());
- reportError(File, EC);
- return;
- }
- Binary &Binary = *BinaryOrErr.get().getBinary();
- if (Archive *Arc = dyn_cast<Archive>(&Binary))
- dumpArchive(Arc);
- else if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary))
- dumpCXXData(Obj);
- else
- reportError(File, cxxdump_error::unrecognized_file_format);
- }
- int main(int argc, const char *argv[]) {
- InitLLVM X(argc, argv);
- // Initialize targets.
- llvm::InitializeAllTargetInfos();
- // Register the target printer for --version.
- cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);
- cl::ParseCommandLineOptions(argc, argv, "LLVM C++ ABI Data Dumper\n");
- // Default to stdin if no filename is specified.
- if (opts::InputFilenames.size() == 0)
- opts::InputFilenames.push_back("-");
- llvm::for_each(opts::InputFilenames, dumpInput);
- return EXIT_SUCCESS;
- }
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