LLVM  10.0.0svn
Symbolize.cpp
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1 //===-- LLVMSymbolize.cpp -------------------------------------------------===//
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 // Implementation for LLVM symbolization library.
10 //
11 //===----------------------------------------------------------------------===//
12 
14 
15 #include "SymbolizableObjectFile.h"
16 
17 #include "llvm/ADT/STLExtras.h"
18 #include "llvm/BinaryFormat/COFF.h"
20 #include "llvm/DebugInfo/PDB/PDB.h"
22 #include "llvm/Demangle/Demangle.h"
23 #include "llvm/Object/COFF.h"
24 #include "llvm/Object/MachO.h"
26 #include "llvm/Support/CRC.h"
27 #include "llvm/Support/Casting.h"
30 #include "llvm/Support/Errc.h"
33 #include "llvm/Support/Path.h"
34 #include <algorithm>
35 #include <cassert>
36 #include <cstring>
37 
38 #if defined(_MSC_VER)
39 #include <Windows.h>
40 
41 // This must be included after windows.h.
42 #include <DbgHelp.h>
43 #pragma comment(lib, "dbghelp.lib")
44 
45 // Windows.h conflicts with our COFF header definitions.
46 #ifdef IMAGE_FILE_MACHINE_I386
47 #undef IMAGE_FILE_MACHINE_I386
48 #endif
49 #endif
50 
51 namespace llvm {
52 namespace symbolize {
53 
54 Expected<DILineInfo>
55 LLVMSymbolizer::symbolizeCodeCommon(SymbolizableModule *Info,
56  object::SectionedAddress ModuleOffset) {
57  // A null module means an error has already been reported. Return an empty
58  // result.
59  if (!Info)
60  return DILineInfo();
61 
62  // If the user is giving us relative addresses, add the preferred base of the
63  // object to the offset before we do the query. It's what DIContext expects.
64  if (Opts.RelativeAddresses)
65  ModuleOffset.Address += Info->getModulePreferredBase();
66 
67  DILineInfo LineInfo = Info->symbolizeCode(ModuleOffset, Opts.PrintFunctions,
68  Opts.UseSymbolTable);
69  if (Opts.Demangle)
70  LineInfo.FunctionName = DemangleName(LineInfo.FunctionName, Info);
71  return LineInfo;
72 }
73 
74 Expected<DILineInfo>
76  object::SectionedAddress ModuleOffset) {
77  StringRef ModuleName = Obj.getFileName();
78  auto I = Modules.find(ModuleName);
79  if (I != Modules.end())
80  return symbolizeCodeCommon(I->second.get(), ModuleOffset);
81 
82  std::unique_ptr<DIContext> Context =
85  createModuleInfo(&Obj, std::move(Context), ModuleName);
86  if (!InfoOrErr)
87  return InfoOrErr.takeError();
88  return symbolizeCodeCommon(*InfoOrErr, ModuleOffset);
89 }
90 
92 LLVMSymbolizer::symbolizeCode(const std::string &ModuleName,
93  object::SectionedAddress ModuleOffset) {
94  Expected<SymbolizableModule *> InfoOrErr = getOrCreateModuleInfo(ModuleName);
95  if (!InfoOrErr)
96  return InfoOrErr.takeError();
97  return symbolizeCodeCommon(*InfoOrErr, ModuleOffset);
98 }
99 
101 LLVMSymbolizer::symbolizeInlinedCode(const std::string &ModuleName,
102  object::SectionedAddress ModuleOffset) {
104  if (auto InfoOrErr = getOrCreateModuleInfo(ModuleName))
105  Info = InfoOrErr.get();
106  else
107  return InfoOrErr.takeError();
108 
109  // A null module means an error has already been reported. Return an empty
110  // result.
111  if (!Info)
112  return DIInliningInfo();
113 
114  // If the user is giving us relative addresses, add the preferred base of the
115  // object to the offset before we do the query. It's what DIContext expects.
116  if (Opts.RelativeAddresses)
117  ModuleOffset.Address += Info->getModulePreferredBase();
118 
119  DIInliningInfo InlinedContext = Info->symbolizeInlinedCode(
120  ModuleOffset, Opts.PrintFunctions, Opts.UseSymbolTable);
121  if (Opts.Demangle) {
122  for (int i = 0, n = InlinedContext.getNumberOfFrames(); i < n; i++) {
123  auto *Frame = InlinedContext.getMutableFrame(i);
124  Frame->FunctionName = DemangleName(Frame->FunctionName, Info);
125  }
126  }
127  return InlinedContext;
128 }
129 
131 LLVMSymbolizer::symbolizeData(const std::string &ModuleName,
132  object::SectionedAddress ModuleOffset) {
134  if (auto InfoOrErr = getOrCreateModuleInfo(ModuleName))
135  Info = InfoOrErr.get();
136  else
137  return InfoOrErr.takeError();
138 
139  // A null module means an error has already been reported. Return an empty
140  // result.
141  if (!Info)
142  return DIGlobal();
143 
144  // If the user is giving us relative addresses, add the preferred base of
145  // the object to the offset before we do the query. It's what DIContext
146  // expects.
147  if (Opts.RelativeAddresses)
148  ModuleOffset.Address += Info->getModulePreferredBase();
149 
150  DIGlobal Global = Info->symbolizeData(ModuleOffset);
151  if (Opts.Demangle)
152  Global.Name = DemangleName(Global.Name, Info);
153  return Global;
154 }
155 
157 LLVMSymbolizer::symbolizeFrame(const std::string &ModuleName,
158  object::SectionedAddress ModuleOffset) {
160  if (auto InfoOrErr = getOrCreateModuleInfo(ModuleName))
161  Info = InfoOrErr.get();
162  else
163  return InfoOrErr.takeError();
164 
165  // A null module means an error has already been reported. Return an empty
166  // result.
167  if (!Info)
168  return std::vector<DILocal>();
169 
170  // If the user is giving us relative addresses, add the preferred base of
171  // the object to the offset before we do the query. It's what DIContext
172  // expects.
173  if (Opts.RelativeAddresses)
174  ModuleOffset.Address += Info->getModulePreferredBase();
175 
176  return Info->symbolizeFrame(ModuleOffset);
177 }
178 
180  ObjectForUBPathAndArch.clear();
181  BinaryForPath.clear();
182  ObjectPairForPathArch.clear();
183  Modules.clear();
184 }
185 
186 namespace {
187 
188 // For Path="/path/to/foo" and Basename="foo" assume that debug info is in
189 // /path/to/foo.dSYM/Contents/Resources/DWARF/foo.
190 // For Path="/path/to/bar.dSYM" and Basename="foo" assume that debug info is in
191 // /path/to/bar.dSYM/Contents/Resources/DWARF/foo.
192 std::string getDarwinDWARFResourceForPath(
193  const std::string &Path, const std::string &Basename) {
194  SmallString<16> ResourceName = StringRef(Path);
195  if (sys::path::extension(Path) != ".dSYM") {
196  ResourceName += ".dSYM";
197  }
198  sys::path::append(ResourceName, "Contents", "Resources", "DWARF");
199  sys::path::append(ResourceName, Basename);
200  return ResourceName.str();
201 }
202 
203 bool checkFileCRC(StringRef Path, uint32_t CRCHash) {
206  if (!MB)
207  return false;
208  return CRCHash == llvm::crc32(0, MB.get()->getBuffer());
209 }
210 
211 bool findDebugBinary(const std::string &OrigPath,
212  const std::string &DebuglinkName, uint32_t CRCHash,
213  const std::string &FallbackDebugPath,
214  std::string &Result) {
215  SmallString<16> OrigDir(OrigPath);
217  SmallString<16> DebugPath = OrigDir;
218  // Try relative/path/to/original_binary/debuglink_name
219  llvm::sys::path::append(DebugPath, DebuglinkName);
220  if (checkFileCRC(DebugPath, CRCHash)) {
221  Result = DebugPath.str();
222  return true;
223  }
224  // Try relative/path/to/original_binary/.debug/debuglink_name
225  DebugPath = OrigDir;
226  llvm::sys::path::append(DebugPath, ".debug", DebuglinkName);
227  if (checkFileCRC(DebugPath, CRCHash)) {
228  Result = DebugPath.str();
229  return true;
230  }
231  // Make the path absolute so that lookups will go to
232  // "/usr/lib/debug/full/path/to/debug", not
233  // "/usr/lib/debug/to/debug"
235  if (!FallbackDebugPath.empty()) {
236  // Try <FallbackDebugPath>/absolute/path/to/original_binary/debuglink_name
237  DebugPath = FallbackDebugPath;
238  } else {
239 #if defined(__NetBSD__)
240  // Try /usr/libdata/debug/absolute/path/to/original_binary/debuglink_name
241  DebugPath = "/usr/libdata/debug";
242 #else
243  // Try /usr/lib/debug/absolute/path/to/original_binary/debuglink_name
244  DebugPath = "/usr/lib/debug";
245 #endif
246  }
248  DebuglinkName);
249  if (checkFileCRC(DebugPath, CRCHash)) {
250  Result = DebugPath.str();
251  return true;
252  }
253  return false;
254 }
255 
256 bool getGNUDebuglinkContents(const ObjectFile *Obj, std::string &DebugName,
257  uint32_t &CRCHash) {
258  if (!Obj)
259  return false;
260  for (const SectionRef &Section : Obj->sections()) {
261  StringRef Name;
262  if (Expected<StringRef> NameOrErr = Section.getName())
263  Name = *NameOrErr;
264  else
265  consumeError(NameOrErr.takeError());
266 
267  Name = Name.substr(Name.find_first_not_of("._"));
268  if (Name == "gnu_debuglink") {
269  Expected<StringRef> ContentsOrErr = Section.getContents();
270  if (!ContentsOrErr) {
271  consumeError(ContentsOrErr.takeError());
272  return false;
273  }
274  DataExtractor DE(*ContentsOrErr, Obj->isLittleEndian(), 0);
275  uint64_t Offset = 0;
276  if (const char *DebugNameStr = DE.getCStr(&Offset)) {
277  // 4-byte align the offset.
278  Offset = (Offset + 3) & ~0x3;
279  if (DE.isValidOffsetForDataOfSize(Offset, 4)) {
280  DebugName = DebugNameStr;
281  CRCHash = DE.getU32(&Offset);
282  return true;
283  }
284  }
285  break;
286  }
287  }
288  return false;
289 }
290 
291 bool darwinDsymMatchesBinary(const MachOObjectFile *DbgObj,
292  const MachOObjectFile *Obj) {
293  ArrayRef<uint8_t> dbg_uuid = DbgObj->getUuid();
294  ArrayRef<uint8_t> bin_uuid = Obj->getUuid();
295  if (dbg_uuid.empty() || bin_uuid.empty())
296  return false;
297  return !memcmp(dbg_uuid.data(), bin_uuid.data(), dbg_uuid.size());
298 }
299 
300 } // end anonymous namespace
301 
302 ObjectFile *LLVMSymbolizer::lookUpDsymFile(const std::string &ExePath,
303  const MachOObjectFile *MachExeObj, const std::string &ArchName) {
304  // On Darwin we may find DWARF in separate object file in
305  // resource directory.
306  std::vector<std::string> DsymPaths;
307  StringRef Filename = sys::path::filename(ExePath);
308  DsymPaths.push_back(getDarwinDWARFResourceForPath(ExePath, Filename));
309  for (const auto &Path : Opts.DsymHints) {
310  DsymPaths.push_back(getDarwinDWARFResourceForPath(Path, Filename));
311  }
312  for (const auto &Path : DsymPaths) {
313  auto DbgObjOrErr = getOrCreateObject(Path, ArchName);
314  if (!DbgObjOrErr) {
315  // Ignore errors, the file might not exist.
316  consumeError(DbgObjOrErr.takeError());
317  continue;
318  }
319  ObjectFile *DbgObj = DbgObjOrErr.get();
320  if (!DbgObj)
321  continue;
322  const MachOObjectFile *MachDbgObj = dyn_cast<const MachOObjectFile>(DbgObj);
323  if (!MachDbgObj)
324  continue;
325  if (darwinDsymMatchesBinary(MachDbgObj, MachExeObj))
326  return DbgObj;
327  }
328  return nullptr;
329 }
330 
331 ObjectFile *LLVMSymbolizer::lookUpDebuglinkObject(const std::string &Path,
332  const ObjectFile *Obj,
333  const std::string &ArchName) {
334  std::string DebuglinkName;
335  uint32_t CRCHash;
336  std::string DebugBinaryPath;
337  if (!getGNUDebuglinkContents(Obj, DebuglinkName, CRCHash))
338  return nullptr;
339  if (!findDebugBinary(Path, DebuglinkName, CRCHash, Opts.FallbackDebugPath,
340  DebugBinaryPath))
341  return nullptr;
342  auto DbgObjOrErr = getOrCreateObject(DebugBinaryPath, ArchName);
343  if (!DbgObjOrErr) {
344  // Ignore errors, the file might not exist.
345  consumeError(DbgObjOrErr.takeError());
346  return nullptr;
347  }
348  return DbgObjOrErr.get();
349 }
350 
352 LLVMSymbolizer::getOrCreateObjectPair(const std::string &Path,
353  const std::string &ArchName) {
354  auto I = ObjectPairForPathArch.find(std::make_pair(Path, ArchName));
355  if (I != ObjectPairForPathArch.end())
356  return I->second;
357 
358  auto ObjOrErr = getOrCreateObject(Path, ArchName);
359  if (!ObjOrErr) {
360  ObjectPairForPathArch.emplace(std::make_pair(Path, ArchName),
361  ObjectPair(nullptr, nullptr));
362  return ObjOrErr.takeError();
363  }
364 
365  ObjectFile *Obj = ObjOrErr.get();
366  assert(Obj != nullptr);
367  ObjectFile *DbgObj = nullptr;
368 
369  if (auto MachObj = dyn_cast<const MachOObjectFile>(Obj))
370  DbgObj = lookUpDsymFile(Path, MachObj, ArchName);
371  if (!DbgObj)
372  DbgObj = lookUpDebuglinkObject(Path, Obj, ArchName);
373  if (!DbgObj)
374  DbgObj = Obj;
375  ObjectPair Res = std::make_pair(Obj, DbgObj);
376  ObjectPairForPathArch.emplace(std::make_pair(Path, ArchName), Res);
377  return Res;
378 }
379 
381 LLVMSymbolizer::getOrCreateObject(const std::string &Path,
382  const std::string &ArchName) {
383  Binary *Bin;
384  auto Pair = BinaryForPath.emplace(Path, OwningBinary<Binary>());
385  if (!Pair.second) {
386  Bin = Pair.first->second.getBinary();
387  } else {
389  if (!BinOrErr)
390  return BinOrErr.takeError();
391  Pair.first->second = std::move(BinOrErr.get());
392  Bin = Pair.first->second.getBinary();
393  }
394 
395  if (!Bin)
396  return static_cast<ObjectFile *>(nullptr);
397 
398  if (MachOUniversalBinary *UB = dyn_cast_or_null<MachOUniversalBinary>(Bin)) {
399  auto I = ObjectForUBPathAndArch.find(std::make_pair(Path, ArchName));
400  if (I != ObjectForUBPathAndArch.end())
401  return I->second.get();
402 
404  UB->getObjectForArch(ArchName);
405  if (!ObjOrErr) {
406  ObjectForUBPathAndArch.emplace(std::make_pair(Path, ArchName),
407  std::unique_ptr<ObjectFile>());
408  return ObjOrErr.takeError();
409  }
410  ObjectFile *Res = ObjOrErr->get();
411  ObjectForUBPathAndArch.emplace(std::make_pair(Path, ArchName),
412  std::move(ObjOrErr.get()));
413  return Res;
414  }
415  if (Bin->isObject()) {
416  return cast<ObjectFile>(Bin);
417  }
418  return errorCodeToError(object_error::arch_not_found);
419 }
420 
422 LLVMSymbolizer::createModuleInfo(const ObjectFile *Obj,
423  std::unique_ptr<DIContext> Context,
424  StringRef ModuleName) {
425  auto InfoOrErr = SymbolizableObjectFile::create(Obj, std::move(Context),
426  Opts.UntagAddresses);
427  std::unique_ptr<SymbolizableModule> SymMod;
428  if (InfoOrErr)
429  SymMod = std::move(*InfoOrErr);
430  auto InsertResult =
431  Modules.insert(std::make_pair(ModuleName, std::move(SymMod)));
432  assert(InsertResult.second);
433  if (std::error_code EC = InfoOrErr.getError())
434  return errorCodeToError(EC);
435  return InsertResult.first->second.get();
436 }
437 
439 LLVMSymbolizer::getOrCreateModuleInfo(const std::string &ModuleName) {
440  auto I = Modules.find(ModuleName);
441  if (I != Modules.end())
442  return I->second.get();
443 
444  std::string BinaryName = ModuleName;
445  std::string ArchName = Opts.DefaultArch;
446  size_t ColonPos = ModuleName.find_last_of(':');
447  // Verify that substring after colon form a valid arch name.
448  if (ColonPos != std::string::npos) {
449  std::string ArchStr = ModuleName.substr(ColonPos + 1);
450  if (Triple(ArchStr).getArch() != Triple::UnknownArch) {
451  BinaryName = ModuleName.substr(0, ColonPos);
452  ArchName = ArchStr;
453  }
454  }
455  auto ObjectsOrErr = getOrCreateObjectPair(BinaryName, ArchName);
456  if (!ObjectsOrErr) {
457  // Failed to find valid object file.
458  Modules.emplace(ModuleName, std::unique_ptr<SymbolizableModule>());
459  return ObjectsOrErr.takeError();
460  }
461  ObjectPair Objects = ObjectsOrErr.get();
462 
463  std::unique_ptr<DIContext> Context;
464  // If this is a COFF object containing PDB info, use a PDBContext to
465  // symbolize. Otherwise, use DWARF.
466  if (auto CoffObject = dyn_cast<COFFObjectFile>(Objects.first)) {
467  const codeview::DebugInfo *DebugInfo;
468  StringRef PDBFileName;
469  auto EC = CoffObject->getDebugPDBInfo(DebugInfo, PDBFileName);
470  if (!EC && DebugInfo != nullptr && !PDBFileName.empty()) {
471  using namespace pdb;
472  std::unique_ptr<IPDBSession> Session;
473  if (auto Err = loadDataForEXE(PDB_ReaderType::DIA,
474  Objects.first->getFileName(), Session)) {
475  Modules.emplace(ModuleName, std::unique_ptr<SymbolizableModule>());
476  // Return along the PDB filename to provide more context
477  return createFileError(PDBFileName, std::move(Err));
478  }
479  Context.reset(new PDBContext(*CoffObject, std::move(Session)));
480  }
481  }
482  if (!Context)
483  Context =
484  DWARFContext::create(*Objects.second, nullptr,
485  DWARFContext::defaultErrorHandler, Opts.DWPName);
486  return createModuleInfo(Objects.first, std::move(Context), ModuleName);
487 }
488 
489 namespace {
490 
491 // Undo these various manglings for Win32 extern "C" functions:
492 // cdecl - _foo
493 // stdcall - _foo@12
494 // fastcall - @foo@12
495 // vectorcall - foo@@12
496 // These are all different linkage names for 'foo'.
497 StringRef demanglePE32ExternCFunc(StringRef SymbolName) {
498  // Remove any '_' or '@' prefix.
499  char Front = SymbolName.empty() ? '\0' : SymbolName[0];
500  if (Front == '_' || Front == '@')
501  SymbolName = SymbolName.drop_front();
502 
503  // Remove any '@[0-9]+' suffix.
504  if (Front != '?') {
505  size_t AtPos = SymbolName.rfind('@');
506  if (AtPos != StringRef::npos &&
507  std::all_of(SymbolName.begin() + AtPos + 1, SymbolName.end(),
508  [](char C) { return C >= '0' && C <= '9'; })) {
509  SymbolName = SymbolName.substr(0, AtPos);
510  }
511  }
512 
513  // Remove any ending '@' for vectorcall.
514  if (SymbolName.endswith("@"))
515  SymbolName = SymbolName.drop_back();
516 
517  return SymbolName;
518 }
519 
520 } // end anonymous namespace
521 
522 std::string
524  const SymbolizableModule *DbiModuleDescriptor) {
525  // We can spoil names of symbols with C linkage, so use an heuristic
526  // approach to check if the name should be demangled.
527  if (Name.substr(0, 2) == "_Z") {
528  int status = 0;
529  char *DemangledName = itaniumDemangle(Name.c_str(), nullptr, nullptr, &status);
530  if (status != 0)
531  return Name;
532  std::string Result = DemangledName;
533  free(DemangledName);
534  return Result;
535  }
536 
537 #if defined(_MSC_VER)
538  if (!Name.empty() && Name.front() == '?') {
539  // Only do MSVC C++ demangling on symbols starting with '?'.
540  char DemangledName[1024] = {0};
541  DWORD result = ::UnDecorateSymbolName(
542  Name.c_str(), DemangledName, 1023,
543  UNDNAME_NO_ACCESS_SPECIFIERS | // Strip public, private, protected
544  UNDNAME_NO_ALLOCATION_LANGUAGE | // Strip __thiscall, __stdcall, etc
545  UNDNAME_NO_THROW_SIGNATURES | // Strip throw() specifications
546  UNDNAME_NO_MEMBER_TYPE | // Strip virtual, static, etc specifiers
547  UNDNAME_NO_MS_KEYWORDS | // Strip all MS extension keywords
548  UNDNAME_NO_FUNCTION_RETURNS); // Strip function return types
549  return (result == 0) ? Name : std::string(DemangledName);
550  }
551 #endif
552  if (DbiModuleDescriptor && DbiModuleDescriptor->isWin32Module())
553  return std::string(demanglePE32ExternCFunc(Name));
554  return Name;
555 }
556 
557 } // namespace symbolize
558 } // namespace llvm
uint64_t CallInst * C
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Remove the last component from path unless it is the root dir.
Definition: Path.cpp:474
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Definition: DIContext.h:92
char * itaniumDemangle(const char *mangled_name, char *buf, size_t *n, int *status)
LLVMContext & Context
LLVM_NODISCARD bool endswith(StringRef Suffix) const
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StringRef getFileName() const
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Definition: StringRef.h:345
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Definition: Symbolize.cpp:75
This class is the base class for all object file types.
Definition: ObjectFile.h:226
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Provide wrappers to std::all_of which take ranges instead of having to pass begin/end explicitly...
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virtual bool isWin32Module() const =0
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Definition: Binary.cpp:45
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Definition: Path.cpp:455
constexpr char SymbolName[]
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Return a StringRef equal to &#39;this&#39; but with the first N elements dropped.
Definition: StringRef.h:620
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Make path an absolute path.
Definition: Path.cpp:853
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Definition: yaml2obj.h:21
Expected< DIGlobal > symbolizeData(const std::string &ModuleName, object::SectionedAddress ModuleOffset)
Definition: Symbolize.cpp:131
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Return a reference to the substring from [Start, Start + N).
Definition: StringRef.h:578
LLVM_NODISCARD bool empty() const
empty - Check if the string is empty.
Definition: StringRef.h:126
StringRef str() const
Explicit conversion to StringRef.
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section_iterator_range sections() const
Definition: ObjectFile.h:315
uint32_t getNumberOfFrames() const
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Analysis containing CSE Info
Definition: CSEInfo.cpp:20
Error loadDataForEXE(PDB_ReaderType Type, StringRef Path, std::unique_ptr< IPDBSession > &Session)
Definition: PDB.cpp:43
std::error_code status(const Twine &path, file_status &result, bool follow=true)
Get file status as if by POSIX stat().
size_t size() const
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Definition: ArrayRef.h:148
Error errorCodeToError(std::error_code EC)
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Definition: Error.cpp:87
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Definition: Symbolize.h:44
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Definition: Symbolize.cpp:157
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Definition: Symbolize.cpp:101
virtual DIInliningInfo symbolizeInlinedCode(object::SectionedAddress ModuleOffset, FunctionNameKind FNKind, bool UseSymbolTable) const =0
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bool isLittleEndian() const
Definition: Binary.h:140
const T * data() const
Definition: ArrayRef.h:145
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:43
static std::unique_ptr< DWARFContext > create(const object::ObjectFile &Obj, const LoadedObjectInfo *L=nullptr, function_ref< ErrorPolicy(Error)> HandleError=defaultErrorHandler, std::string DWPName="")
uint32_t crc32(uint32_t CRC, StringRef S)
zlib independent CRC32 calculation.
Definition: CRC.cpp:65
static std::string DemangleName(const std::string &Name, const SymbolizableModule *DbiModuleDescriptor)
Definition: Symbolize.cpp:523
virtual std::vector< DILocal > symbolizeFrame(object::SectionedAddress ModuleOffset) const =0
ArrayRef< uint8_t > getUuid() const
std::string Name
Definition: DIContext.h:112
std::string FunctionName
Definition: DIContext.h:36
reference get()
Returns a reference to the stored T value.
Definition: Error.h:532
bool isObject() const
Definition: Binary.h:100
iterator begin() const
Definition: StringRef.h:101
virtual uint64_t getModulePreferredBase() const =0
static ErrorOr< std::unique_ptr< MemoryBuffer > > getFileOrSTDIN(const Twine &Filename, int64_t FileSize=-1, bool RequiresNullTerminator=true)
Open the specified file as a MemoryBuffer, or open stdin if the Filename is "-".
Merge contiguous icmps into a memcmp
Definition: MergeICmps.cpp:927
static const size_t npos
Definition: StringRef.h:50
StringRef filename(StringRef path, Style style=Style::native)
Get filename.
Definition: Path.cpp:565
#define I(x, y, z)
Definition: MD5.cpp:58
LLVM_NODISCARD std::enable_if<!is_simple_type< Y >::value, typename cast_retty< X, const Y >::ret_type >::type dyn_cast(const Y &Val)
Definition: Casting.h:332
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
StringRef relative_path(StringRef path, Style style=Style::native)
Get relative path.
Definition: Path.cpp:412
Error createFileError(const Twine &F, Error E)
Concatenate a source file path and/or name with an Error.
Definition: Error.h:1231
LLVM_NODISCARD StringRef drop_back(size_t N=1) const
Return a StringRef equal to &#39;this&#39; but with the last N elements dropped.
Definition: StringRef.h:628
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:48
static ErrorOr< std::unique_ptr< SymbolizableObjectFile > > create(const object::ObjectFile *Obj, std::unique_ptr< DIContext > DICtx, bool UntagAddresses)
iterator end() const
Definition: StringRef.h:103
virtual DIGlobal symbolizeData(object::SectionedAddress ModuleOffset) const =0
reference get()
Definition: ErrorOr.h:156
Container for description of a global variable.
Definition: DIContext.h:111
bool empty() const
empty - Check if the array is empty.
Definition: ArrayRef.h:143
This is a value type class that represents a single section in the list of sections in the object fil...
Definition: ObjectFile.h:81
StringRef extension(StringRef path, Style style=Style::native)
Get extension.
Definition: Path.cpp:580