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/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/ManagedStatic.h"
24#include "llvm/Support/PrettyStackTrace.h"
25#include "llvm/Support/Signals.h"
26#include "llvm/Support/TargetRegistry.h"
27#include "llvm/Support/TargetSelect.h"
28#include "llvm/Support/raw_ostream.h"
29#include <map>
30#include <string>
31#include <system_error>
32
33using namespace llvm;
34using namespace llvm::object;
35using namespace llvm::support;
36
37namespace opts {
38cl::list<std::string> InputFilenames(cl::Positional,
39                                     cl::desc("<input object files>"),
40                                     cl::ZeroOrMore);
41} // namespace opts
42
43namespace llvm {
44
45static void error(std::error_code EC) {
46  if (!EC)
47    return;
48  outs() << "\nError reading file: " << EC.message() << ".\n";
49  outs().flush();
50  exit(1);
51}
52
53static void error(Error Err) {
54  if (Err) {
55    logAllUnhandledErrors(std::move(Err), outs(), "Error reading file: ");
56    outs().flush();
57    exit(1);
58  }
59}
60
61} // namespace llvm
62
63static void reportError(StringRef Input, StringRef Message) {
64  if (Input == "-")
65    Input = "<stdin>";
66  errs() << Input << ": " << Message << "\n";
67  errs().flush();
68  exit(1);
69}
70
71static void reportError(StringRef Input, std::error_code EC) {
72  reportError(Input, EC.message());
73}
74
75static std::map<SectionRef, SmallVector<SectionRef, 1>> SectionRelocMap;
76
77static void collectRelocatedSymbols(const ObjectFile *Obj,
78                                    const SectionRef &Sec, uint64_t SecAddress,
79                                    uint64_t SymAddress, uint64_t SymSize,
80                                    StringRef *I, StringRef *E) {
81  uint64_t SymOffset = SymAddress - SecAddress;
82  uint64_t SymEnd = SymOffset + SymSize;
83  for (const SectionRef &SR : SectionRelocMap[Sec]) {
84    for (const object::RelocationRef &Reloc : SR.relocations()) {
85      if (I == E)
86        break;
87      const object::symbol_iterator RelocSymI = Reloc.getSymbol();
88      if (RelocSymI == Obj->symbol_end())
89        continue;
90      Expected<StringRef> RelocSymName = RelocSymI->getName();
91      error(errorToErrorCode(RelocSymName.takeError()));
92      uint64_t Offset = Reloc.getOffset();
93      if (Offset >= SymOffset && Offset < SymEnd) {
94        *I = *RelocSymName;
95        ++I;
96      }
97    }
98  }
99}
100
101static void collectRelocationOffsets(
102    const ObjectFile *Obj, const SectionRef &Sec, uint64_t SecAddress,
103    uint64_t SymAddress, uint64_t SymSize, StringRef SymName,
104    std::map<std::pair<StringRef, uint64_t>, StringRef> &Collection) {
105  uint64_t SymOffset = SymAddress - SecAddress;
106  uint64_t SymEnd = SymOffset + SymSize;
107  for (const SectionRef &SR : SectionRelocMap[Sec]) {
108    for (const object::RelocationRef &Reloc : SR.relocations()) {
109      const object::symbol_iterator RelocSymI = Reloc.getSymbol();
110      if (RelocSymI == Obj->symbol_end())
111        continue;
112      Expected<StringRef> RelocSymName = RelocSymI->getName();
113      error(errorToErrorCode(RelocSymName.takeError()));
114      uint64_t Offset = Reloc.getOffset();
115      if (Offset >= SymOffset && Offset < SymEnd)
116        Collection[std::make_pair(SymName, Offset - SymOffset)] = *RelocSymName;
117    }
118  }
119}
120
121static void dumpCXXData(const ObjectFile *Obj) {
122  struct CompleteObjectLocator {
123    StringRef Symbols[2];
124    ArrayRef<little32_t> Data;
125  };
126  struct ClassHierarchyDescriptor {
127    StringRef Symbols[1];
128    ArrayRef<little32_t> Data;
129  };
130  struct BaseClassDescriptor {
131    StringRef Symbols[2];
132    ArrayRef<little32_t> Data;
133  };
134  struct TypeDescriptor {
135    StringRef Symbols[1];
136    uint64_t AlwaysZero;
137    StringRef MangledName;
138  };
139  struct ThrowInfo {
140    uint32_t Flags;
141  };
142  struct CatchableTypeArray {
143    uint32_t NumEntries;
144  };
145  struct CatchableType {
146    uint32_t Flags;
147    uint32_t NonVirtualBaseAdjustmentOffset;
148    int32_t VirtualBasePointerOffset;
149    uint32_t VirtualBaseAdjustmentOffset;
150    uint32_t Size;
151    StringRef Symbols[2];
152  };
153  std::map<std::pair<StringRef, uint64_t>, StringRef> VFTableEntries;
154  std::map<std::pair<StringRef, uint64_t>, StringRef> TIEntries;
155  std::map<std::pair<StringRef, uint64_t>, StringRef> CTAEntries;
156  std::map<StringRef, ArrayRef<little32_t>> VBTables;
157  std::map<StringRef, CompleteObjectLocator> COLs;
158  std::map<StringRef, ClassHierarchyDescriptor> CHDs;
159  std::map<std::pair<StringRef, uint64_t>, StringRef> BCAEntries;
160  std::map<StringRef, BaseClassDescriptor> BCDs;
161  std::map<StringRef, TypeDescriptor> TDs;
162  std::map<StringRef, ThrowInfo> TIs;
163  std::map<StringRef, CatchableTypeArray> CTAs;
164  std::map<StringRef, CatchableType> CTs;
165
166  std::map<std::pair<StringRef, uint64_t>, StringRef> VTableSymEntries;
167  std::map<std::pair<StringRef, uint64_t>, int64_t> VTableDataEntries;
168  std::map<std::pair<StringRef, uint64_t>, StringRef> VTTEntries;
169  std::map<StringRef, StringRef> TINames;
170
171  SectionRelocMap.clear();
172  for (const SectionRef &Section : Obj->sections()) {
173    section_iterator Sec2 = Section.getRelocatedSection();
174    if (Sec2 != Obj->section_end())
175      SectionRelocMap[*Sec2].push_back(Section);
176  }
177
178  uint8_t BytesInAddress = Obj->getBytesInAddress();
179
180  std::vector<std::pair<SymbolRef, uint64_t>> SymAddr =
181      object::computeSymbolSizes(*Obj);
182
183  for (auto &P : SymAddr) {
184    object::SymbolRef Sym = P.first;
185    uint64_t SymSize = P.second;
186    Expected<StringRef> SymNameOrErr = Sym.getName();
187    error(errorToErrorCode(SymNameOrErr.takeError()));
188    StringRef SymName = *SymNameOrErr;
189    Expected<object::section_iterator> SecIOrErr = Sym.getSection();
190    error(errorToErrorCode(SecIOrErr.takeError()));
191    object::section_iterator SecI = *SecIOrErr;
192    // Skip external symbols.
193    if (SecI == Obj->section_end())
194      continue;
195    const SectionRef &Sec = *SecI;
196    // Skip virtual or BSS sections.
197    if (Sec.isBSS() || Sec.isVirtual())
198      continue;
199    StringRef SecContents;
200    error(Sec.getContents(SecContents));
201    Expected<uint64_t> SymAddressOrErr = Sym.getAddress();
202    error(errorToErrorCode(SymAddressOrErr.takeError()));
203    uint64_t SymAddress = *SymAddressOrErr;
204    uint64_t SecAddress = Sec.getAddress();
205    uint64_t SecSize = Sec.getSize();
206    uint64_t SymOffset = SymAddress - SecAddress;
207    StringRef SymContents = SecContents.substr(SymOffset, SymSize);
208
209    // VFTables in the MS-ABI start with '??_7' and are contained within their
210    // own COMDAT section.  We then determine the contents of the VFTable by
211    // looking at each relocation in the section.
212    if (SymName.startswith("??_7")) {
213      // Each relocation either names a virtual method or a thunk.  We note the
214      // offset into the section and the symbol used for the relocation.
215      collectRelocationOffsets(Obj, Sec, SecAddress, SecAddress, SecSize,
216                               SymName, VFTableEntries);
217    }
218    // VBTables in the MS-ABI start with '??_8' and are filled with 32-bit
219    // offsets of virtual bases.
220    else if (SymName.startswith("??_8")) {
221      ArrayRef<little32_t> VBTableData(
222          reinterpret_cast<const little32_t *>(SymContents.data()),
223          SymContents.size() / sizeof(little32_t));
224      VBTables[SymName] = VBTableData;
225    }
226    // Complete object locators in the MS-ABI start with '??_R4'
227    else if (SymName.startswith("??_R4")) {
228      CompleteObjectLocator COL;
229      COL.Data = makeArrayRef(
230          reinterpret_cast<const little32_t *>(SymContents.data()), 3);
231      StringRef *I = std::begin(COL.Symbols), *E = std::end(COL.Symbols);
232      collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E);
233      COLs[SymName] = COL;
234    }
235    // Class hierarchy descriptors in the MS-ABI start with '??_R3'
236    else if (SymName.startswith("??_R3")) {
237      ClassHierarchyDescriptor CHD;
238      CHD.Data = makeArrayRef(
239          reinterpret_cast<const little32_t *>(SymContents.data()), 3);
240      StringRef *I = std::begin(CHD.Symbols), *E = std::end(CHD.Symbols);
241      collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E);
242      CHDs[SymName] = CHD;
243    }
244    // Class hierarchy descriptors in the MS-ABI start with '??_R2'
245    else if (SymName.startswith("??_R2")) {
246      // Each relocation names a base class descriptor.  We note the offset into
247      // the section and the symbol used for the relocation.
248      collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize,
249                               SymName, BCAEntries);
250    }
251    // Base class descriptors in the MS-ABI start with '??_R1'
252    else if (SymName.startswith("??_R1")) {
253      BaseClassDescriptor BCD;
254      BCD.Data = makeArrayRef(
255          reinterpret_cast<const little32_t *>(SymContents.data()) + 1, 5);
256      StringRef *I = std::begin(BCD.Symbols), *E = std::end(BCD.Symbols);
257      collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E);
258      BCDs[SymName] = BCD;
259    }
260    // Type descriptors in the MS-ABI start with '??_R0'
261    else if (SymName.startswith("??_R0")) {
262      const char *DataPtr = SymContents.drop_front(BytesInAddress).data();
263      TypeDescriptor TD;
264      if (BytesInAddress == 8)
265        TD.AlwaysZero = *reinterpret_cast<const little64_t *>(DataPtr);
266      else
267        TD.AlwaysZero = *reinterpret_cast<const little32_t *>(DataPtr);
268      TD.MangledName = SymContents.drop_front(BytesInAddress * 2);
269      StringRef *I = std::begin(TD.Symbols), *E = std::end(TD.Symbols);
270      collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E);
271      TDs[SymName] = TD;
272    }
273    // Throw descriptors in the MS-ABI start with '_TI'
274    else if (SymName.startswith("_TI") || SymName.startswith("__TI")) {
275      ThrowInfo TI;
276      TI.Flags = *reinterpret_cast<const little32_t *>(SymContents.data());
277      collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize,
278                               SymName, TIEntries);
279      TIs[SymName] = TI;
280    }
281    // Catchable type arrays in the MS-ABI start with _CTA or __CTA.
282    else if (SymName.startswith("_CTA") || SymName.startswith("__CTA")) {
283      CatchableTypeArray CTA;
284      CTA.NumEntries =
285          *reinterpret_cast<const little32_t *>(SymContents.data());
286      collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize,
287                               SymName, CTAEntries);
288      CTAs[SymName] = CTA;
289    }
290    // Catchable types in the MS-ABI start with _CT or __CT.
291    else if (SymName.startswith("_CT") || SymName.startswith("__CT")) {
292      const little32_t *DataPtr =
293          reinterpret_cast<const little32_t *>(SymContents.data());
294      CatchableType CT;
295      CT.Flags = DataPtr[0];
296      CT.NonVirtualBaseAdjustmentOffset = DataPtr[2];
297      CT.VirtualBasePointerOffset = DataPtr[3];
298      CT.VirtualBaseAdjustmentOffset = DataPtr[4];
299      CT.Size = DataPtr[5];
300      StringRef *I = std::begin(CT.Symbols), *E = std::end(CT.Symbols);
301      collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I, E);
302      CTs[SymName] = CT;
303    }
304    // Construction vtables in the Itanium ABI start with '_ZTT' or '__ZTT'.
305    else if (SymName.startswith("_ZTT") || SymName.startswith("__ZTT")) {
306      collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize,
307                               SymName, VTTEntries);
308    }
309    // Typeinfo names in the Itanium ABI start with '_ZTS' or '__ZTS'.
310    else if (SymName.startswith("_ZTS") || SymName.startswith("__ZTS")) {
311      TINames[SymName] = SymContents.slice(0, SymContents.find('\0'));
312    }
313    // Vtables in the Itanium ABI start with '_ZTV' or '__ZTV'.
314    else if (SymName.startswith("_ZTV") || SymName.startswith("__ZTV")) {
315      collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize,
316                               SymName, VTableSymEntries);
317      for (uint64_t SymOffI = 0; SymOffI < SymSize; SymOffI += BytesInAddress) {
318        auto Key = std::make_pair(SymName, SymOffI);
319        if (VTableSymEntries.count(Key))
320          continue;
321        const char *DataPtr =
322            SymContents.substr(SymOffI, BytesInAddress).data();
323        int64_t VData;
324        if (BytesInAddress == 8)
325          VData = *reinterpret_cast<const little64_t *>(DataPtr);
326        else
327          VData = *reinterpret_cast<const little32_t *>(DataPtr);
328        VTableDataEntries[Key] = VData;
329      }
330    }
331    // Typeinfo structures in the Itanium ABI start with '_ZTI' or '__ZTI'.
332    else if (SymName.startswith("_ZTI") || SymName.startswith("__ZTI")) {
333      // FIXME: Do something with these!
334    }
335  }
336  for (const auto &VFTableEntry : VFTableEntries) {
337    StringRef VFTableName = VFTableEntry.first.first;
338    uint64_t Offset = VFTableEntry.first.second;
339    StringRef SymName = VFTableEntry.second;
340    outs() << VFTableName << '[' << Offset << "]: " << SymName << '\n';
341  }
342  for (const auto &VBTable : VBTables) {
343    StringRef VBTableName = VBTable.first;
344    uint32_t Idx = 0;
345    for (little32_t Offset : VBTable.second) {
346      outs() << VBTableName << '[' << Idx << "]: " << Offset << '\n';
347      Idx += sizeof(Offset);
348    }
349  }
350  for (const auto &COLPair : COLs) {
351    StringRef COLName = COLPair.first;
352    const CompleteObjectLocator &COL = COLPair.second;
353    outs() << COLName << "[IsImageRelative]: " << COL.Data[0] << '\n';
354    outs() << COLName << "[OffsetToTop]: " << COL.Data[1] << '\n';
355    outs() << COLName << "[VFPtrOffset]: " << COL.Data[2] << '\n';
356    outs() << COLName << "[TypeDescriptor]: " << COL.Symbols[0] << '\n';
357    outs() << COLName << "[ClassHierarchyDescriptor]: " << COL.Symbols[1]
358           << '\n';
359  }
360  for (const auto &CHDPair : CHDs) {
361    StringRef CHDName = CHDPair.first;
362    const ClassHierarchyDescriptor &CHD = CHDPair.second;
363    outs() << CHDName << "[AlwaysZero]: " << CHD.Data[0] << '\n';
364    outs() << CHDName << "[Flags]: " << CHD.Data[1] << '\n';
365    outs() << CHDName << "[NumClasses]: " << CHD.Data[2] << '\n';
366    outs() << CHDName << "[BaseClassArray]: " << CHD.Symbols[0] << '\n';
367  }
368  for (const auto &BCAEntry : BCAEntries) {
369    StringRef BCAName = BCAEntry.first.first;
370    uint64_t Offset = BCAEntry.first.second;
371    StringRef SymName = BCAEntry.second;
372    outs() << BCAName << '[' << Offset << "]: " << SymName << '\n';
373  }
374  for (const auto &BCDPair : BCDs) {
375    StringRef BCDName = BCDPair.first;
376    const BaseClassDescriptor &BCD = BCDPair.second;
377    outs() << BCDName << "[TypeDescriptor]: " << BCD.Symbols[0] << '\n';
378    outs() << BCDName << "[NumBases]: " << BCD.Data[0] << '\n';
379    outs() << BCDName << "[OffsetInVBase]: " << BCD.Data[1] << '\n';
380    outs() << BCDName << "[VBPtrOffset]: " << BCD.Data[2] << '\n';
381    outs() << BCDName << "[OffsetInVBTable]: " << BCD.Data[3] << '\n';
382    outs() << BCDName << "[Flags]: " << BCD.Data[4] << '\n';
383    outs() << BCDName << "[ClassHierarchyDescriptor]: " << BCD.Symbols[1]
384           << '\n';
385  }
386  for (const auto &TDPair : TDs) {
387    StringRef TDName = TDPair.first;
388    const TypeDescriptor &TD = TDPair.second;
389    outs() << TDName << "[VFPtr]: " << TD.Symbols[0] << '\n';
390    outs() << TDName << "[AlwaysZero]: " << TD.AlwaysZero << '\n';
391    outs() << TDName << "[MangledName]: ";
392    outs().write_escaped(TD.MangledName.rtrim(StringRef("\0", 1)),
393                         /*UseHexEscapes=*/true)
394        << '\n';
395  }
396  for (const auto &TIPair : TIs) {
397    StringRef TIName = TIPair.first;
398    const ThrowInfo &TI = TIPair.second;
399    auto dumpThrowInfoFlag = [&](const char *Name, uint32_t Flag) {
400      outs() << TIName << "[Flags." << Name
401             << "]: " << (TI.Flags & Flag ? "true" : "false") << '\n';
402    };
403    auto dumpThrowInfoSymbol = [&](const char *Name, int Offset) {
404      outs() << TIName << '[' << Name << "]: ";
405      auto Entry = TIEntries.find(std::make_pair(TIName, Offset));
406      outs() << (Entry == TIEntries.end() ? "null" : Entry->second) << '\n';
407    };
408    outs() << TIName << "[Flags]: " << TI.Flags << '\n';
409    dumpThrowInfoFlag("Const", 1);
410    dumpThrowInfoFlag("Volatile", 2);
411    dumpThrowInfoSymbol("CleanupFn", 4);
412    dumpThrowInfoSymbol("ForwardCompat", 8);
413    dumpThrowInfoSymbol("CatchableTypeArray", 12);
414  }
415  for (const auto &CTAPair : CTAs) {
416    StringRef CTAName = CTAPair.first;
417    const CatchableTypeArray &CTA = CTAPair.second;
418
419    outs() << CTAName << "[NumEntries]: " << CTA.NumEntries << '\n';
420
421    unsigned Idx = 0;
422    for (auto I = CTAEntries.lower_bound(std::make_pair(CTAName, 0)),
423              E = CTAEntries.upper_bound(std::make_pair(CTAName, UINT64_MAX));
424         I != E; ++I)
425      outs() << CTAName << '[' << Idx++ << "]: " << I->second << '\n';
426  }
427  for (const auto &CTPair : CTs) {
428    StringRef CTName = CTPair.first;
429    const CatchableType &CT = CTPair.second;
430    auto dumpCatchableTypeFlag = [&](const char *Name, uint32_t Flag) {
431      outs() << CTName << "[Flags." << Name
432             << "]: " << (CT.Flags & Flag ? "true" : "false") << '\n';
433    };
434    outs() << CTName << "[Flags]: " << CT.Flags << '\n';
435    dumpCatchableTypeFlag("ScalarType", 1);
436    dumpCatchableTypeFlag("VirtualInheritance", 4);
437    outs() << CTName << "[TypeDescriptor]: " << CT.Symbols[0] << '\n';
438    outs() << CTName << "[NonVirtualBaseAdjustmentOffset]: "
439           << CT.NonVirtualBaseAdjustmentOffset << '\n';
440    outs() << CTName
441           << "[VirtualBasePointerOffset]: " << CT.VirtualBasePointerOffset
442           << '\n';
443    outs() << CTName << "[VirtualBaseAdjustmentOffset]: "
444           << CT.VirtualBaseAdjustmentOffset << '\n';
445    outs() << CTName << "[Size]: " << CT.Size << '\n';
446    outs() << CTName
447           << "[CopyCtor]: " << (CT.Symbols[1].empty() ? "null" : CT.Symbols[1])
448           << '\n';
449  }
450  for (const auto &VTTPair : VTTEntries) {
451    StringRef VTTName = VTTPair.first.first;
452    uint64_t VTTOffset = VTTPair.first.second;
453    StringRef VTTEntry = VTTPair.second;
454    outs() << VTTName << '[' << VTTOffset << "]: " << VTTEntry << '\n';
455  }
456  for (const auto &TIPair : TINames) {
457    StringRef TIName = TIPair.first;
458    outs() << TIName << ": " << TIPair.second << '\n';
459  }
460  auto VTableSymI = VTableSymEntries.begin();
461  auto VTableSymE = VTableSymEntries.end();
462  auto VTableDataI = VTableDataEntries.begin();
463  auto VTableDataE = VTableDataEntries.end();
464  for (;;) {
465    bool SymDone = VTableSymI == VTableSymE;
466    bool DataDone = VTableDataI == VTableDataE;
467    if (SymDone && DataDone)
468      break;
469    if (!SymDone && (DataDone || VTableSymI->first < VTableDataI->first)) {
470      StringRef VTableName = VTableSymI->first.first;
471      uint64_t Offset = VTableSymI->first.second;
472      StringRef VTableEntry = VTableSymI->second;
473      outs() << VTableName << '[' << Offset << "]: ";
474      outs() << VTableEntry;
475      outs() << '\n';
476      ++VTableSymI;
477      continue;
478    }
479    if (!DataDone && (SymDone || VTableDataI->first < VTableSymI->first)) {
480      StringRef VTableName = VTableDataI->first.first;
481      uint64_t Offset = VTableDataI->first.second;
482      int64_t VTableEntry = VTableDataI->second;
483      outs() << VTableName << '[' << Offset << "]: ";
484      outs() << VTableEntry;
485      outs() << '\n';
486      ++VTableDataI;
487      continue;
488    }
489  }
490}
491
492static void dumpArchive(const Archive *Arc) {
493  Error Err;
494  for (auto &ArcC : Arc->children(Err)) {
495    Expected<std::unique_ptr<Binary>> ChildOrErr = ArcC.getAsBinary();
496    if (!ChildOrErr) {
497      // Ignore non-object files.
498      if (auto E = isNotObjectErrorInvalidFileType(ChildOrErr.takeError())) {
499        std::string Buf;
500        raw_string_ostream OS(Buf);
501        logAllUnhandledErrors(std::move(E), OS, "");
502        OS.flush();
503        reportError(Arc->getFileName(), Buf);
504      }
505      ChildOrErr.takeError();
506      continue;
507    }
508
509    if (ObjectFile *Obj = dyn_cast<ObjectFile>(&*ChildOrErr.get()))
510      dumpCXXData(Obj);
511    else
512      reportError(Arc->getFileName(), cxxdump_error::unrecognized_file_format);
513  }
514  error(std::move(Err));
515}
516
517static void dumpInput(StringRef File) {
518  // Attempt to open the binary.
519  Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(File);
520  if (!BinaryOrErr) {
521    auto EC = errorToErrorCode(BinaryOrErr.takeError());
522    reportError(File, EC);
523    return;
524  }
525  Binary &Binary = *BinaryOrErr.get().getBinary();
526
527  if (Archive *Arc = dyn_cast<Archive>(&Binary))
528    dumpArchive(Arc);
529  else if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary))
530    dumpCXXData(Obj);
531  else
532    reportError(File, cxxdump_error::unrecognized_file_format);
533}
534
535int main(int argc, const char *argv[]) {
536  sys::PrintStackTraceOnErrorSignal(argv[0]);
537  PrettyStackTraceProgram X(argc, argv);
538  llvm_shutdown_obj Y;
539
540  // Initialize targets.
541  llvm::InitializeAllTargetInfos();
542
543  // Register the target printer for --version.
544  cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);
545
546  cl::ParseCommandLineOptions(argc, argv, "LLVM C++ ABI Data Dumper\n");
547
548  // Default to stdin if no filename is specified.
549  if (opts::InputFilenames.size() == 0)
550    opts::InputFilenames.push_back("-");
551
552  std::for_each(opts::InputFilenames.begin(), opts::InputFilenames.end(),
553                dumpInput);
554
555  return EXIT_SUCCESS;
556}
557