Bug Summary

File:tools/llvm-cxxdump/llvm-cxxdump.cpp
Location:line 359, column 29
Description:Function call argument is an uninitialized value

Annotated Source Code

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 "llvm/Support/raw_ostream.h"
28#include <map>
29#include <string>
30#include <system_error>
31
32using namespace llvm;
33using namespace llvm::object;
34using namespace llvm::support;
35
36namespace opts {
37cl::list<std::string> InputFilenames(cl::Positional,
38 cl::desc("<input object files>"),
39 cl::ZeroOrMore);
40} // namespace opts
41
42static int ReturnValue = EXIT_SUCCESS0;
43
44namespace llvm {
45
46static bool error(std::error_code EC) {
47 if (!EC)
48 return false;
49
50 ReturnValue = EXIT_FAILURE1;
51 outs() << "\nError reading file: " << EC.message() << ".\n";
52 outs().flush();
53 return true;
54}
55
56} // namespace llvm
57
58static void reportError(StringRef Input, StringRef Message) {
59 if (Input == "-")
60 Input = "<stdin>";
61
62 errs() << Input << ": " << Message << "\n";
63 errs().flush();
64 ReturnValue = EXIT_FAILURE1;
65}
66
67static void reportError(StringRef Input, std::error_code EC) {
68 reportError(Input, EC.message());
69}
70
71static SmallVectorImpl<SectionRef> &getRelocSections(const ObjectFile *Obj,
72 const SectionRef &Sec) {
73 static bool MappingDone = false;
74 static std::map<SectionRef, SmallVector<SectionRef, 1>> SectionRelocMap;
75 if (!MappingDone) {
76 for (const SectionRef &Section : Obj->sections()) {
77 section_iterator Sec2 = Section.getRelocatedSection();
78 if (Sec2 != Obj->section_end())
79 SectionRelocMap[*Sec2].push_back(Section);
80 }
81 MappingDone = true;
82 }
83 return SectionRelocMap[Sec];
84}
85
86static bool collectRelocatedSymbols(const ObjectFile *Obj,
87 const SectionRef &Sec, uint64_t SecAddress,
88 uint64_t SymAddress, uint64_t SymSize,
89 StringRef *I, StringRef *E) {
90 uint64_t SymOffset = SymAddress - SecAddress;
91 uint64_t SymEnd = SymOffset + SymSize;
92 for (const SectionRef &SR : getRelocSections(Obj, Sec)) {
93 for (const object::RelocationRef &Reloc : SR.relocations()) {
94 if (I == E)
95 break;
96 const object::symbol_iterator RelocSymI = Reloc.getSymbol();
97 if (RelocSymI == Obj->symbol_end())
98 continue;
99 StringRef RelocSymName;
100 if (error(RelocSymI->getName(RelocSymName)))
101 return true;
102 uint64_t Offset;
103 if (error(Reloc.getOffset(Offset)))
104 return true;
105 if (Offset >= SymOffset && Offset < SymEnd) {
106 *I = RelocSymName;
107 ++I;
108 }
109 }
110 }
111 return false;
112}
113
114static bool collectRelocationOffsets(
115 const ObjectFile *Obj, const SectionRef &Sec, uint64_t SecAddress,
116 uint64_t SymAddress, uint64_t SymSize, StringRef SymName,
117 std::map<std::pair<StringRef, uint64_t>, StringRef> &Collection) {
118 uint64_t SymOffset = SymAddress - SecAddress;
119 uint64_t SymEnd = SymOffset + SymSize;
120 for (const SectionRef &SR : getRelocSections(Obj, Sec)) {
121 for (const object::RelocationRef &Reloc : SR.relocations()) {
122 const object::symbol_iterator RelocSymI = Reloc.getSymbol();
123 if (RelocSymI == Obj->symbol_end())
124 continue;
125 StringRef RelocSymName;
126 if (error(RelocSymI->getName(RelocSymName)))
127 return true;
128 uint64_t Offset;
129 if (error(Reloc.getOffset(Offset)))
130 return true;
131 if (Offset >= SymOffset && Offset < SymEnd)
132 Collection[std::make_pair(SymName, Offset - SymOffset)] = RelocSymName;
133 }
134 }
135 return false;
136}
137
138static void dumpCXXData(const ObjectFile *Obj) {
139 struct CompleteObjectLocator {
140 StringRef Symbols[2];
141 ArrayRef<little32_t> Data;
142 };
143 struct ClassHierarchyDescriptor {
144 StringRef Symbols[1];
145 ArrayRef<little32_t> Data;
146 };
147 struct BaseClassDescriptor {
148 StringRef Symbols[2];
149 ArrayRef<little32_t> Data;
150 };
151 struct TypeDescriptor {
152 StringRef Symbols[1];
153 uint64_t AlwaysZero;
154 StringRef MangledName;
155 };
156 struct ThrowInfo {
157 uint32_t Flags;
158 };
159 struct CatchableTypeArray {
160 uint32_t NumEntries;
161 };
162 struct CatchableType {
163 uint32_t Flags;
164 uint32_t NonVirtualBaseAdjustmentOffset;
165 int32_t VirtualBasePointerOffset;
166 uint32_t VirtualBaseAdjustmentOffset;
167 uint32_t Size;
168 StringRef Symbols[2];
169 };
170 std::map<std::pair<StringRef, uint64_t>, StringRef> VFTableEntries;
171 std::map<std::pair<StringRef, uint64_t>, StringRef> TIEntries;
172 std::map<std::pair<StringRef, uint64_t>, StringRef> CTAEntries;
173 std::map<StringRef, ArrayRef<little32_t>> VBTables;
174 std::map<StringRef, CompleteObjectLocator> COLs;
175 std::map<StringRef, ClassHierarchyDescriptor> CHDs;
176 std::map<std::pair<StringRef, uint64_t>, StringRef> BCAEntries;
177 std::map<StringRef, BaseClassDescriptor> BCDs;
178 std::map<StringRef, TypeDescriptor> TDs;
179 std::map<StringRef, ThrowInfo> TIs;
180 std::map<StringRef, CatchableTypeArray> CTAs;
181 std::map<StringRef, CatchableType> CTs;
182
183 std::map<std::pair<StringRef, uint64_t>, StringRef> VTableSymEntries;
184 std::map<std::pair<StringRef, uint64_t>, int64_t> VTableDataEntries;
185 std::map<std::pair<StringRef, uint64_t>, StringRef> VTTEntries;
186 std::map<StringRef, StringRef> TINames;
187
188 uint8_t BytesInAddress = Obj->getBytesInAddress();
189
190 for (const object::SymbolRef &Sym : Obj->symbols()) {
191 StringRef SymName;
192 if (error(Sym.getName(SymName)))
193 return;
194 object::section_iterator SecI(Obj->section_begin());
195 if (error(Sym.getSection(SecI)))
196 return;
197 // Skip external symbols.
198 if (SecI == Obj->section_end())
199 continue;
200 const SectionRef &Sec = *SecI;
201 // Skip virtual or BSS sections.
202 if (Sec.isBSS() || Sec.isVirtual())
203 continue;
204 StringRef SecContents;
205 if (error(Sec.getContents(SecContents)))
206 return;
207 uint64_t SymAddress, SymSize;
208 if (error(Sym.getAddress(SymAddress)) || error(Sym.getSize(SymSize)))
209 return;
210 uint64_t SecAddress = Sec.getAddress();
211 uint64_t SecSize = Sec.getSize();
212 uint64_t SymOffset = SymAddress - SecAddress;
213 StringRef SymContents = SecContents.substr(SymOffset, SymSize);
214
215 // VFTables in the MS-ABI start with '??_7' and are contained within their
216 // own COMDAT section. We then determine the contents of the VFTable by
217 // looking at each relocation in the section.
218 if (SymName.startswith("??_7")) {
219 // Each relocation either names a virtual method or a thunk. We note the
220 // offset into the section and the symbol used for the relocation.
221 collectRelocationOffsets(Obj, Sec, SecAddress, SecAddress, SecSize,
222 SymName, VFTableEntries);
223 }
224 // VBTables in the MS-ABI start with '??_8' and are filled with 32-bit
225 // offsets of virtual bases.
226 else if (SymName.startswith("??_8")) {
227 ArrayRef<little32_t> VBTableData(
228 reinterpret_cast<const little32_t *>(SymContents.data()),
229 SymContents.size() / sizeof(little32_t));
230 VBTables[SymName] = VBTableData;
231 }
232 // Complete object locators in the MS-ABI start with '??_R4'
233 else if (SymName.startswith("??_R4")) {
234 CompleteObjectLocator COL;
235 COL.Data = ArrayRef<little32_t>(
236 reinterpret_cast<const little32_t *>(SymContents.data()), 3);
237 StringRef *I = std::begin(COL.Symbols), *E = std::end(COL.Symbols);
238 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I,
239 E))
240 return;
241 COLs[SymName] = COL;
242 }
243 // Class hierarchy descriptors in the MS-ABI start with '??_R3'
244 else if (SymName.startswith("??_R3")) {
245 ClassHierarchyDescriptor CHD;
246 CHD.Data = ArrayRef<little32_t>(
247 reinterpret_cast<const little32_t *>(SymContents.data()), 3);
248 StringRef *I = std::begin(CHD.Symbols), *E = std::end(CHD.Symbols);
249 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I,
250 E))
251 return;
252 CHDs[SymName] = CHD;
253 }
254 // Class hierarchy descriptors in the MS-ABI start with '??_R2'
255 else if (SymName.startswith("??_R2")) {
256 // Each relocation names a base class descriptor. We note the offset into
257 // the section and the symbol used for the relocation.
258 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize,
259 SymName, BCAEntries);
260 }
261 // Base class descriptors in the MS-ABI start with '??_R1'
262 else if (SymName.startswith("??_R1")) {
263 BaseClassDescriptor BCD;
264 BCD.Data = ArrayRef<little32_t>(
265 reinterpret_cast<const little32_t *>(SymContents.data()) + 1, 5);
266 StringRef *I = std::begin(BCD.Symbols), *E = std::end(BCD.Symbols);
267 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I,
268 E))
269 return;
270 BCDs[SymName] = BCD;
271 }
272 // Type descriptors in the MS-ABI start with '??_R0'
273 else if (SymName.startswith("??_R0")) {
274 const char *DataPtr = SymContents.drop_front(BytesInAddress).data();
275 TypeDescriptor TD;
276 if (BytesInAddress == 8)
277 TD.AlwaysZero = *reinterpret_cast<const little64_t *>(DataPtr);
278 else
279 TD.AlwaysZero = *reinterpret_cast<const little32_t *>(DataPtr);
280 TD.MangledName = SymContents.drop_front(BytesInAddress * 2);
281 StringRef *I = std::begin(TD.Symbols), *E = std::end(TD.Symbols);
282 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I,
283 E))
284 return;
285 TDs[SymName] = TD;
286 }
287 // Throw descriptors in the MS-ABI start with '_TI'
288 else if (SymName.startswith("_TI") || SymName.startswith("__TI")) {
289 ThrowInfo TI;
290 TI.Flags = *reinterpret_cast<const little32_t *>(SymContents.data());
291 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize,
292 SymName, TIEntries);
293 TIs[SymName] = TI;
294 }
295 // Catchable type arrays in the MS-ABI start with _CTA or __CTA.
296 else if (SymName.startswith("_CTA") || SymName.startswith("__CTA")) {
297 CatchableTypeArray CTA;
298 CTA.NumEntries =
299 *reinterpret_cast<const little32_t *>(SymContents.data());
300 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize,
301 SymName, CTAEntries);
302 CTAs[SymName] = CTA;
303 }
304 // Catchable types in the MS-ABI start with _CT or __CT.
305 else if (SymName.startswith("_CT") || SymName.startswith("__CT")) {
306 const little32_t *DataPtr =
307 reinterpret_cast<const little32_t *>(SymContents.data());
308 CatchableType CT;
309 CT.Flags = DataPtr[0];
310 CT.NonVirtualBaseAdjustmentOffset = DataPtr[2];
311 CT.VirtualBasePointerOffset = DataPtr[3];
312 CT.VirtualBaseAdjustmentOffset = DataPtr[4];
313 CT.Size = DataPtr[5];
314 StringRef *I = std::begin(CT.Symbols), *E = std::end(CT.Symbols);
315 if (collectRelocatedSymbols(Obj, Sec, SecAddress, SymAddress, SymSize, I,
316 E))
317 return;
318 CTs[SymName] = CT;
319 }
320 // Construction vtables in the Itanium ABI start with '_ZTT' or '__ZTT'.
321 else if (SymName.startswith("_ZTT") || SymName.startswith("__ZTT")) {
322 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize,
323 SymName, VTTEntries);
324 }
325 // Typeinfo names in the Itanium ABI start with '_ZTS' or '__ZTS'.
326 else if (SymName.startswith("_ZTS") || SymName.startswith("__ZTS")) {
327 TINames[SymName] = SymContents.slice(0, SymContents.find('\0'));
328 }
329 // Vtables in the Itanium ABI start with '_ZTV' or '__ZTV'.
330 else if (SymName.startswith("_ZTV") || SymName.startswith("__ZTV")) {
331 collectRelocationOffsets(Obj, Sec, SecAddress, SymAddress, SymSize,
332 SymName, VTableSymEntries);
333 for (uint64_t SymOffI = 0; SymOffI < SymSize; SymOffI += BytesInAddress) {
334 auto Key = std::make_pair(SymName, SymOffI);
335 if (VTableSymEntries.count(Key))
336 continue;
337 const char *DataPtr =
338 SymContents.substr(SymOffI, BytesInAddress).data();
339 int64_t VData;
340 if (BytesInAddress == 8)
341 VData = *reinterpret_cast<const little64_t *>(DataPtr);
342 else
343 VData = *reinterpret_cast<const little32_t *>(DataPtr);
344 VTableDataEntries[Key] = VData;
345 }
346 }
347 // Typeinfo structures in the Itanium ABI start with '_ZTI' or '__ZTI'.
348 else if (SymName.startswith("_ZTI") || SymName.startswith("__ZTI")) {
349 // FIXME: Do something with these!
350 }
351 }
352 for (const auto &VFTableEntry : VFTableEntries) {
353 StringRef VFTableName = VFTableEntry.first.first;
354 uint64_t Offset = VFTableEntry.first.second;
355 StringRef SymName = VFTableEntry.second;
356 outs() << VFTableName << '[' << Offset << "]: " << SymName << '\n';
357 }
358 for (const std::pair<StringRef, ArrayRef<little32_t>> &VBTable : VBTables) {
359 StringRef VBTableName = VBTable.first;
Function call argument is an uninitialized value
360 uint32_t Idx = 0;
361 for (little32_t Offset : VBTable.second) {
362 outs() << VBTableName << '[' << Idx << "]: " << Offset << '\n';
363 Idx += sizeof(Offset);
364 }
365 }
366 for (const std::pair<StringRef, CompleteObjectLocator> &COLPair : COLs) {
367 StringRef COLName = COLPair.first;
368 const CompleteObjectLocator &COL = COLPair.second;
369 outs() << COLName << "[IsImageRelative]: " << COL.Data[0] << '\n';
370 outs() << COLName << "[OffsetToTop]: " << COL.Data[1] << '\n';
371 outs() << COLName << "[VFPtrOffset]: " << COL.Data[2] << '\n';
372 outs() << COLName << "[TypeDescriptor]: " << COL.Symbols[0] << '\n';
373 outs() << COLName << "[ClassHierarchyDescriptor]: " << COL.Symbols[1]
374 << '\n';
375 }
376 for (const std::pair<StringRef, ClassHierarchyDescriptor> &CHDPair : CHDs) {
377 StringRef CHDName = CHDPair.first;
378 const ClassHierarchyDescriptor &CHD = CHDPair.second;
379 outs() << CHDName << "[AlwaysZero]: " << CHD.Data[0] << '\n';
380 outs() << CHDName << "[Flags]: " << CHD.Data[1] << '\n';
381 outs() << CHDName << "[NumClasses]: " << CHD.Data[2] << '\n';
382 outs() << CHDName << "[BaseClassArray]: " << CHD.Symbols[0] << '\n';
383 }
384 for (const std::pair<std::pair<StringRef, uint64_t>, StringRef> &BCAEntry :
385 BCAEntries) {
386 StringRef BCAName = BCAEntry.first.first;
387 uint64_t Offset = BCAEntry.first.second;
388 StringRef SymName = BCAEntry.second;
389 outs() << BCAName << '[' << Offset << "]: " << SymName << '\n';
390 }
391 for (const std::pair<StringRef, BaseClassDescriptor> &BCDPair : BCDs) {
392 StringRef BCDName = BCDPair.first;
393 const BaseClassDescriptor &BCD = BCDPair.second;
394 outs() << BCDName << "[TypeDescriptor]: " << BCD.Symbols[0] << '\n';
395 outs() << BCDName << "[NumBases]: " << BCD.Data[0] << '\n';
396 outs() << BCDName << "[OffsetInVBase]: " << BCD.Data[1] << '\n';
397 outs() << BCDName << "[VBPtrOffset]: " << BCD.Data[2] << '\n';
398 outs() << BCDName << "[OffsetInVBTable]: " << BCD.Data[3] << '\n';
399 outs() << BCDName << "[Flags]: " << BCD.Data[4] << '\n';
400 outs() << BCDName << "[ClassHierarchyDescriptor]: " << BCD.Symbols[1]
401 << '\n';
402 }
403 for (const std::pair<StringRef, TypeDescriptor> &TDPair : TDs) {
404 StringRef TDName = TDPair.first;
405 const TypeDescriptor &TD = TDPair.second;
406 outs() << TDName << "[VFPtr]: " << TD.Symbols[0] << '\n';
407 outs() << TDName << "[AlwaysZero]: " << TD.AlwaysZero << '\n';
408 outs() << TDName << "[MangledName]: ";
409 outs().write_escaped(TD.MangledName.rtrim(StringRef("\0", 1)),
410 /*UseHexEscapes=*/true)
411 << '\n';
412 }
413 for (const std::pair<StringRef, ThrowInfo> &TIPair : TIs) {
414 StringRef TIName = TIPair.first;
415 const ThrowInfo &TI = TIPair.second;
416 auto dumpThrowInfoFlag = [&](const char *Name, uint32_t Flag) {
417 outs() << TIName << "[Flags." << Name
418 << "]: " << (TI.Flags & Flag ? "true" : "false") << '\n';
419 };
420 auto dumpThrowInfoSymbol = [&](const char *Name, int Offset) {
421 outs() << TIName << '[' << Name << "]: ";
422 auto Entry = TIEntries.find(std::make_pair(TIName, Offset));
423 outs() << (Entry == TIEntries.end() ? "null" : Entry->second) << '\n';
424 };
425 outs() << TIName << "[Flags]: " << TI.Flags << '\n';
426 dumpThrowInfoFlag("Const", 1);
427 dumpThrowInfoFlag("Volatile", 2);
428 dumpThrowInfoSymbol("CleanupFn", 4);
429 dumpThrowInfoSymbol("ForwardCompat", 8);
430 dumpThrowInfoSymbol("CatchableTypeArray", 12);
431 }
432 for (const std::pair<StringRef, CatchableTypeArray> &CTAPair : CTAs) {
433 StringRef CTAName = CTAPair.first;
434 const CatchableTypeArray &CTA = CTAPair.second;
435
436 outs() << CTAName << "[NumEntries]: " << CTA.NumEntries << '\n';
437
438 unsigned Idx = 0;
439 for (auto I = CTAEntries.lower_bound(std::make_pair(CTAName, 0)),
440 E = CTAEntries.upper_bound(std::make_pair(CTAName, UINT64_MAX(18446744073709551615UL)));
441 I != E; ++I)
442 outs() << CTAName << '[' << Idx++ << "]: " << I->second << '\n';
443 }
444 for (const std::pair<StringRef, CatchableType> &CTPair : CTs) {
445 StringRef CTName = CTPair.first;
446 const CatchableType &CT = CTPair.second;
447 auto dumpCatchableTypeFlag = [&](const char *Name, uint32_t Flag) {
448 outs() << CTName << "[Flags." << Name
449 << "]: " << (CT.Flags & Flag ? "true" : "false") << '\n';
450 };
451 outs() << CTName << "[Flags]: " << CT.Flags << '\n';
452 dumpCatchableTypeFlag("ScalarType", 1);
453 dumpCatchableTypeFlag("VirtualInheritance", 4);
454 outs() << CTName << "[TypeDescriptor]: " << CT.Symbols[0] << '\n';
455 outs() << CTName << "[NonVirtualBaseAdjustmentOffset]: "
456 << CT.NonVirtualBaseAdjustmentOffset << '\n';
457 outs() << CTName
458 << "[VirtualBasePointerOffset]: " << CT.VirtualBasePointerOffset
459 << '\n';
460 outs() << CTName << "[VirtualBaseAdjustmentOffset]: "
461 << CT.VirtualBaseAdjustmentOffset << '\n';
462 outs() << CTName << "[Size]: " << CT.Size << '\n';
463 outs() << CTName
464 << "[CopyCtor]: " << (CT.Symbols[1].empty() ? "null" : CT.Symbols[1])
465 << '\n';
466 }
467 for (const std::pair<std::pair<StringRef, uint64_t>, StringRef> &VTTPair :
468 VTTEntries) {
469 StringRef VTTName = VTTPair.first.first;
470 uint64_t VTTOffset = VTTPair.first.second;
471 StringRef VTTEntry = VTTPair.second;
472 outs() << VTTName << '[' << VTTOffset << "]: " << VTTEntry << '\n';
473 }
474 for (const std::pair<StringRef, StringRef> &TIPair : TINames) {
475 StringRef TIName = TIPair.first;
476 outs() << TIName << ": " << TIPair.second << '\n';
477 }
478 auto VTableSymI = VTableSymEntries.begin();
479 auto VTableSymE = VTableSymEntries.end();
480 auto VTableDataI = VTableDataEntries.begin();
481 auto VTableDataE = VTableDataEntries.end();
482 for (;;) {
483 bool SymDone = VTableSymI == VTableSymE;
484 bool DataDone = VTableDataI == VTableDataE;
485 if (SymDone && DataDone)
486 break;
487 if (!SymDone && (DataDone || VTableSymI->first < VTableDataI->first)) {
488 StringRef VTableName = VTableSymI->first.first;
489 uint64_t Offset = VTableSymI->first.second;
490 StringRef VTableEntry = VTableSymI->second;
491 outs() << VTableName << '[' << Offset << "]: ";
492 outs() << VTableEntry;
493 outs() << '\n';
494 ++VTableSymI;
495 continue;
496 }
497 if (!DataDone && (SymDone || VTableDataI->first < VTableSymI->first)) {
498 StringRef VTableName = VTableDataI->first.first;
499 uint64_t Offset = VTableDataI->first.second;
500 int64_t VTableEntry = VTableDataI->second;
501 outs() << VTableName << '[' << Offset << "]: ";
502 outs() << VTableEntry;
503 outs() << '\n';
504 ++VTableDataI;
505 continue;
506 }
507 }
508}
509
510static void dumpArchive(const Archive *Arc) {
511 for (const Archive::Child &ArcC : Arc->children()) {
512 ErrorOr<std::unique_ptr<Binary>> ChildOrErr = ArcC.getAsBinary();
513 if (std::error_code EC = ChildOrErr.getError()) {
514 // Ignore non-object files.
515 if (EC != object_error::invalid_file_type)
516 reportError(Arc->getFileName(), EC.message());
517 continue;
518 }
519
520 if (ObjectFile *Obj = dyn_cast<ObjectFile>(&*ChildOrErr.get()))
521 dumpCXXData(Obj);
522 else
523 reportError(Arc->getFileName(), cxxdump_error::unrecognized_file_format);
524 }
525}
526
527static void dumpInput(StringRef File) {
528 // If file isn't stdin, check that it exists.
529 if (File != "-" && !sys::fs::exists(File)) {
530 reportError(File, cxxdump_error::file_not_found);
531 return;
532 }
533
534 // Attempt to open the binary.
535 ErrorOr<OwningBinary<Binary>> BinaryOrErr = createBinary(File);
536 if (std::error_code EC = BinaryOrErr.getError()) {
537 reportError(File, EC);
538 return;
539 }
540 Binary &Binary = *BinaryOrErr.get().getBinary();
541
542 if (Archive *Arc = dyn_cast<Archive>(&Binary))
543 dumpArchive(Arc);
544 else if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary))
545 dumpCXXData(Obj);
546 else
547 reportError(File, cxxdump_error::unrecognized_file_format);
548}
549
550int main(int argc, const char *argv[]) {
551 sys::PrintStackTraceOnErrorSignal();
552 PrettyStackTraceProgram X(argc, argv);
553 llvm_shutdown_obj Y;
554
555 // Initialize targets.
556 llvm::InitializeAllTargetInfos();
557
558 // Register the target printer for --version.
559 cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);
560
561 cl::ParseCommandLineOptions(argc, argv, "LLVM C++ ABI Data Dumper\n");
562
563 // Default to stdin if no filename is specified.
564 if (opts::InputFilenames.size() == 0)
565 opts::InputFilenames.push_back("-");
566
567 std::for_each(opts::InputFilenames.begin(), opts::InputFilenames.end(),
568 dumpInput);
569
570 return ReturnValue;
571}