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 namespace llvm {
39 namespace symbolize {
40 
41 Expected<DILineInfo>
42 LLVMSymbolizer::symbolizeCodeCommon(SymbolizableModule *Info,
43  object::SectionedAddress ModuleOffset) {
44  // A null module means an error has already been reported. Return an empty
45  // result.
46  if (!Info)
47  return DILineInfo();
48 
49  // If the user is giving us relative addresses, add the preferred base of the
50  // object to the offset before we do the query. It's what DIContext expects.
51  if (Opts.RelativeAddresses)
52  ModuleOffset.Address += Info->getModulePreferredBase();
53 
54  DILineInfo LineInfo = Info->symbolizeCode(ModuleOffset, Opts.PrintFunctions,
55  Opts.UseSymbolTable);
56  if (Opts.Demangle)
57  LineInfo.FunctionName = DemangleName(LineInfo.FunctionName, Info);
58  return LineInfo;
59 }
60 
61 Expected<DILineInfo>
63  object::SectionedAddress ModuleOffset) {
64  StringRef ModuleName = Obj.getFileName();
65  auto I = Modules.find(ModuleName);
66  if (I != Modules.end())
67  return symbolizeCodeCommon(I->second.get(), ModuleOffset);
68 
69  std::unique_ptr<DIContext> Context =
72  createModuleInfo(&Obj, std::move(Context), ModuleName);
73  if (!InfoOrErr)
74  return InfoOrErr.takeError();
75  return symbolizeCodeCommon(*InfoOrErr, ModuleOffset);
76 }
77 
79 LLVMSymbolizer::symbolizeCode(const std::string &ModuleName,
80  object::SectionedAddress ModuleOffset) {
81  Expected<SymbolizableModule *> InfoOrErr = getOrCreateModuleInfo(ModuleName);
82  if (!InfoOrErr)
83  return InfoOrErr.takeError();
84  return symbolizeCodeCommon(*InfoOrErr, ModuleOffset);
85 }
86 
88 LLVMSymbolizer::symbolizeInlinedCode(const std::string &ModuleName,
89  object::SectionedAddress ModuleOffset) {
91  if (auto InfoOrErr = getOrCreateModuleInfo(ModuleName))
92  Info = InfoOrErr.get();
93  else
94  return InfoOrErr.takeError();
95 
96  // A null module means an error has already been reported. Return an empty
97  // result.
98  if (!Info)
99  return DIInliningInfo();
100 
101  // If the user is giving us relative addresses, add the preferred base of the
102  // object to the offset before we do the query. It's what DIContext expects.
103  if (Opts.RelativeAddresses)
104  ModuleOffset.Address += Info->getModulePreferredBase();
105 
106  DIInliningInfo InlinedContext = Info->symbolizeInlinedCode(
107  ModuleOffset, Opts.PrintFunctions, Opts.UseSymbolTable);
108  if (Opts.Demangle) {
109  for (int i = 0, n = InlinedContext.getNumberOfFrames(); i < n; i++) {
110  auto *Frame = InlinedContext.getMutableFrame(i);
111  Frame->FunctionName = DemangleName(Frame->FunctionName, Info);
112  }
113  }
114  return InlinedContext;
115 }
116 
118 LLVMSymbolizer::symbolizeData(const std::string &ModuleName,
119  object::SectionedAddress ModuleOffset) {
121  if (auto InfoOrErr = getOrCreateModuleInfo(ModuleName))
122  Info = InfoOrErr.get();
123  else
124  return InfoOrErr.takeError();
125 
126  // A null module means an error has already been reported. Return an empty
127  // result.
128  if (!Info)
129  return DIGlobal();
130 
131  // If the user is giving us relative addresses, add the preferred base of
132  // the object to the offset before we do the query. It's what DIContext
133  // expects.
134  if (Opts.RelativeAddresses)
135  ModuleOffset.Address += Info->getModulePreferredBase();
136 
137  DIGlobal Global = Info->symbolizeData(ModuleOffset);
138  if (Opts.Demangle)
139  Global.Name = DemangleName(Global.Name, Info);
140  return Global;
141 }
142 
144 LLVMSymbolizer::symbolizeFrame(const std::string &ModuleName,
145  object::SectionedAddress ModuleOffset) {
147  if (auto InfoOrErr = getOrCreateModuleInfo(ModuleName))
148  Info = InfoOrErr.get();
149  else
150  return InfoOrErr.takeError();
151 
152  // A null module means an error has already been reported. Return an empty
153  // result.
154  if (!Info)
155  return std::vector<DILocal>();
156 
157  // If the user is giving us relative addresses, add the preferred base of
158  // the object to the offset before we do the query. It's what DIContext
159  // expects.
160  if (Opts.RelativeAddresses)
161  ModuleOffset.Address += Info->getModulePreferredBase();
162 
163  return Info->symbolizeFrame(ModuleOffset);
164 }
165 
167  ObjectForUBPathAndArch.clear();
168  BinaryForPath.clear();
169  ObjectPairForPathArch.clear();
170  Modules.clear();
171 }
172 
173 namespace {
174 
175 // For Path="/path/to/foo" and Basename="foo" assume that debug info is in
176 // /path/to/foo.dSYM/Contents/Resources/DWARF/foo.
177 // For Path="/path/to/bar.dSYM" and Basename="foo" assume that debug info is in
178 // /path/to/bar.dSYM/Contents/Resources/DWARF/foo.
179 std::string getDarwinDWARFResourceForPath(
180  const std::string &Path, const std::string &Basename) {
181  SmallString<16> ResourceName = StringRef(Path);
182  if (sys::path::extension(Path) != ".dSYM") {
183  ResourceName += ".dSYM";
184  }
185  sys::path::append(ResourceName, "Contents", "Resources", "DWARF");
186  sys::path::append(ResourceName, Basename);
187  return ResourceName.str();
188 }
189 
190 bool checkFileCRC(StringRef Path, uint32_t CRCHash) {
193  if (!MB)
194  return false;
195  return CRCHash == llvm::crc32(arrayRefFromStringRef(MB.get()->getBuffer()));
196 }
197 
198 bool findDebugBinary(const std::string &OrigPath,
199  const std::string &DebuglinkName, uint32_t CRCHash,
200  const std::string &FallbackDebugPath,
201  std::string &Result) {
202  SmallString<16> OrigDir(OrigPath);
204  SmallString<16> DebugPath = OrigDir;
205  // Try relative/path/to/original_binary/debuglink_name
206  llvm::sys::path::append(DebugPath, DebuglinkName);
207  if (checkFileCRC(DebugPath, CRCHash)) {
208  Result = DebugPath.str();
209  return true;
210  }
211  // Try relative/path/to/original_binary/.debug/debuglink_name
212  DebugPath = OrigDir;
213  llvm::sys::path::append(DebugPath, ".debug", DebuglinkName);
214  if (checkFileCRC(DebugPath, CRCHash)) {
215  Result = DebugPath.str();
216  return true;
217  }
218  // Make the path absolute so that lookups will go to
219  // "/usr/lib/debug/full/path/to/debug", not
220  // "/usr/lib/debug/to/debug"
222  if (!FallbackDebugPath.empty()) {
223  // Try <FallbackDebugPath>/absolute/path/to/original_binary/debuglink_name
224  DebugPath = FallbackDebugPath;
225  } else {
226 #if defined(__NetBSD__)
227  // Try /usr/libdata/debug/absolute/path/to/original_binary/debuglink_name
228  DebugPath = "/usr/libdata/debug";
229 #else
230  // Try /usr/lib/debug/absolute/path/to/original_binary/debuglink_name
231  DebugPath = "/usr/lib/debug";
232 #endif
233  }
235  DebuglinkName);
236  if (checkFileCRC(DebugPath, CRCHash)) {
237  Result = DebugPath.str();
238  return true;
239  }
240  return false;
241 }
242 
243 bool getGNUDebuglinkContents(const ObjectFile *Obj, std::string &DebugName,
244  uint32_t &CRCHash) {
245  if (!Obj)
246  return false;
247  for (const SectionRef &Section : Obj->sections()) {
248  StringRef Name;
249  if (Expected<StringRef> NameOrErr = Section.getName())
250  Name = *NameOrErr;
251  else
252  consumeError(NameOrErr.takeError());
253 
254  Name = Name.substr(Name.find_first_not_of("._"));
255  if (Name == "gnu_debuglink") {
256  Expected<StringRef> ContentsOrErr = Section.getContents();
257  if (!ContentsOrErr) {
258  consumeError(ContentsOrErr.takeError());
259  return false;
260  }
261  DataExtractor DE(*ContentsOrErr, Obj->isLittleEndian(), 0);
262  uint64_t Offset = 0;
263  if (const char *DebugNameStr = DE.getCStr(&Offset)) {
264  // 4-byte align the offset.
265  Offset = (Offset + 3) & ~0x3;
266  if (DE.isValidOffsetForDataOfSize(Offset, 4)) {
267  DebugName = DebugNameStr;
268  CRCHash = DE.getU32(&Offset);
269  return true;
270  }
271  }
272  break;
273  }
274  }
275  return false;
276 }
277 
278 bool darwinDsymMatchesBinary(const MachOObjectFile *DbgObj,
279  const MachOObjectFile *Obj) {
280  ArrayRef<uint8_t> dbg_uuid = DbgObj->getUuid();
281  ArrayRef<uint8_t> bin_uuid = Obj->getUuid();
282  if (dbg_uuid.empty() || bin_uuid.empty())
283  return false;
284  return !memcmp(dbg_uuid.data(), bin_uuid.data(), dbg_uuid.size());
285 }
286 
287 } // end anonymous namespace
288 
289 ObjectFile *LLVMSymbolizer::lookUpDsymFile(const std::string &ExePath,
290  const MachOObjectFile *MachExeObj, const std::string &ArchName) {
291  // On Darwin we may find DWARF in separate object file in
292  // resource directory.
293  std::vector<std::string> DsymPaths;
294  StringRef Filename = sys::path::filename(ExePath);
295  DsymPaths.push_back(getDarwinDWARFResourceForPath(ExePath, Filename));
296  for (const auto &Path : Opts.DsymHints) {
297  DsymPaths.push_back(getDarwinDWARFResourceForPath(Path, Filename));
298  }
299  for (const auto &Path : DsymPaths) {
300  auto DbgObjOrErr = getOrCreateObject(Path, ArchName);
301  if (!DbgObjOrErr) {
302  // Ignore errors, the file might not exist.
303  consumeError(DbgObjOrErr.takeError());
304  continue;
305  }
306  ObjectFile *DbgObj = DbgObjOrErr.get();
307  if (!DbgObj)
308  continue;
309  const MachOObjectFile *MachDbgObj = dyn_cast<const MachOObjectFile>(DbgObj);
310  if (!MachDbgObj)
311  continue;
312  if (darwinDsymMatchesBinary(MachDbgObj, MachExeObj))
313  return DbgObj;
314  }
315  return nullptr;
316 }
317 
318 ObjectFile *LLVMSymbolizer::lookUpDebuglinkObject(const std::string &Path,
319  const ObjectFile *Obj,
320  const std::string &ArchName) {
321  std::string DebuglinkName;
322  uint32_t CRCHash;
323  std::string DebugBinaryPath;
324  if (!getGNUDebuglinkContents(Obj, DebuglinkName, CRCHash))
325  return nullptr;
326  if (!findDebugBinary(Path, DebuglinkName, CRCHash, Opts.FallbackDebugPath,
327  DebugBinaryPath))
328  return nullptr;
329  auto DbgObjOrErr = getOrCreateObject(DebugBinaryPath, ArchName);
330  if (!DbgObjOrErr) {
331  // Ignore errors, the file might not exist.
332  consumeError(DbgObjOrErr.takeError());
333  return nullptr;
334  }
335  return DbgObjOrErr.get();
336 }
337 
339 LLVMSymbolizer::getOrCreateObjectPair(const std::string &Path,
340  const std::string &ArchName) {
341  auto I = ObjectPairForPathArch.find(std::make_pair(Path, ArchName));
342  if (I != ObjectPairForPathArch.end())
343  return I->second;
344 
345  auto ObjOrErr = getOrCreateObject(Path, ArchName);
346  if (!ObjOrErr) {
347  ObjectPairForPathArch.emplace(std::make_pair(Path, ArchName),
348  ObjectPair(nullptr, nullptr));
349  return ObjOrErr.takeError();
350  }
351 
352  ObjectFile *Obj = ObjOrErr.get();
353  assert(Obj != nullptr);
354  ObjectFile *DbgObj = nullptr;
355 
356  if (auto MachObj = dyn_cast<const MachOObjectFile>(Obj))
357  DbgObj = lookUpDsymFile(Path, MachObj, ArchName);
358  if (!DbgObj)
359  DbgObj = lookUpDebuglinkObject(Path, Obj, ArchName);
360  if (!DbgObj)
361  DbgObj = Obj;
362  ObjectPair Res = std::make_pair(Obj, DbgObj);
363  ObjectPairForPathArch.emplace(std::make_pair(Path, ArchName), Res);
364  return Res;
365 }
366 
368 LLVMSymbolizer::getOrCreateObject(const std::string &Path,
369  const std::string &ArchName) {
370  Binary *Bin;
371  auto Pair = BinaryForPath.emplace(Path, OwningBinary<Binary>());
372  if (!Pair.second) {
373  Bin = Pair.first->second.getBinary();
374  } else {
376  if (!BinOrErr)
377  return BinOrErr.takeError();
378  Pair.first->second = std::move(BinOrErr.get());
379  Bin = Pair.first->second.getBinary();
380  }
381 
382  if (!Bin)
383  return static_cast<ObjectFile *>(nullptr);
384 
385  if (MachOUniversalBinary *UB = dyn_cast_or_null<MachOUniversalBinary>(Bin)) {
386  auto I = ObjectForUBPathAndArch.find(std::make_pair(Path, ArchName));
387  if (I != ObjectForUBPathAndArch.end())
388  return I->second.get();
389 
391  UB->getMachOObjectForArch(ArchName);
392  if (!ObjOrErr) {
393  ObjectForUBPathAndArch.emplace(std::make_pair(Path, ArchName),
394  std::unique_ptr<ObjectFile>());
395  return ObjOrErr.takeError();
396  }
397  ObjectFile *Res = ObjOrErr->get();
398  ObjectForUBPathAndArch.emplace(std::make_pair(Path, ArchName),
399  std::move(ObjOrErr.get()));
400  return Res;
401  }
402  if (Bin->isObject()) {
403  return cast<ObjectFile>(Bin);
404  }
405  return errorCodeToError(object_error::arch_not_found);
406 }
407 
409 LLVMSymbolizer::createModuleInfo(const ObjectFile *Obj,
410  std::unique_ptr<DIContext> Context,
411  StringRef ModuleName) {
412  auto InfoOrErr = SymbolizableObjectFile::create(Obj, std::move(Context),
413  Opts.UntagAddresses);
414  std::unique_ptr<SymbolizableModule> SymMod;
415  if (InfoOrErr)
416  SymMod = std::move(*InfoOrErr);
417  auto InsertResult =
418  Modules.insert(std::make_pair(ModuleName, std::move(SymMod)));
419  assert(InsertResult.second);
420  if (std::error_code EC = InfoOrErr.getError())
421  return errorCodeToError(EC);
422  return InsertResult.first->second.get();
423 }
424 
426 LLVMSymbolizer::getOrCreateModuleInfo(const std::string &ModuleName) {
427  auto I = Modules.find(ModuleName);
428  if (I != Modules.end())
429  return I->second.get();
430 
431  std::string BinaryName = ModuleName;
432  std::string ArchName = Opts.DefaultArch;
433  size_t ColonPos = ModuleName.find_last_of(':');
434  // Verify that substring after colon form a valid arch name.
435  if (ColonPos != std::string::npos) {
436  std::string ArchStr = ModuleName.substr(ColonPos + 1);
437  if (Triple(ArchStr).getArch() != Triple::UnknownArch) {
438  BinaryName = ModuleName.substr(0, ColonPos);
439  ArchName = ArchStr;
440  }
441  }
442  auto ObjectsOrErr = getOrCreateObjectPair(BinaryName, ArchName);
443  if (!ObjectsOrErr) {
444  // Failed to find valid object file.
445  Modules.emplace(ModuleName, std::unique_ptr<SymbolizableModule>());
446  return ObjectsOrErr.takeError();
447  }
448  ObjectPair Objects = ObjectsOrErr.get();
449 
450  std::unique_ptr<DIContext> Context;
451  // If this is a COFF object containing PDB info, use a PDBContext to
452  // symbolize. Otherwise, use DWARF.
453  if (auto CoffObject = dyn_cast<COFFObjectFile>(Objects.first)) {
454  const codeview::DebugInfo *DebugInfo;
455  StringRef PDBFileName;
456  auto EC = CoffObject->getDebugPDBInfo(DebugInfo, PDBFileName);
457  if (!EC && DebugInfo != nullptr && !PDBFileName.empty()) {
458  using namespace pdb;
459  std::unique_ptr<IPDBSession> Session;
460  if (auto Err = loadDataForEXE(PDB_ReaderType::DIA,
461  Objects.first->getFileName(), Session)) {
462  Modules.emplace(ModuleName, std::unique_ptr<SymbolizableModule>());
463  // Return along the PDB filename to provide more context
464  return createFileError(PDBFileName, std::move(Err));
465  }
466  Context.reset(new PDBContext(*CoffObject, std::move(Session)));
467  }
468  }
469  if (!Context)
470  Context =
471  DWARFContext::create(*Objects.second, nullptr,
472  DWARFContext::defaultErrorHandler, Opts.DWPName);
473  return createModuleInfo(Objects.first, std::move(Context), ModuleName);
474 }
475 
476 namespace {
477 
478 // Undo these various manglings for Win32 extern "C" functions:
479 // cdecl - _foo
480 // stdcall - _foo@12
481 // fastcall - @foo@12
482 // vectorcall - foo@@12
483 // These are all different linkage names for 'foo'.
484 StringRef demanglePE32ExternCFunc(StringRef SymbolName) {
485  // Remove any '_' or '@' prefix.
486  char Front = SymbolName.empty() ? '\0' : SymbolName[0];
487  if (Front == '_' || Front == '@')
488  SymbolName = SymbolName.drop_front();
489 
490  // Remove any '@[0-9]+' suffix.
491  if (Front != '?') {
492  size_t AtPos = SymbolName.rfind('@');
493  if (AtPos != StringRef::npos &&
494  std::all_of(SymbolName.begin() + AtPos + 1, SymbolName.end(),
495  [](char C) { return C >= '0' && C <= '9'; })) {
496  SymbolName = SymbolName.substr(0, AtPos);
497  }
498  }
499 
500  // Remove any ending '@' for vectorcall.
501  if (SymbolName.endswith("@"))
502  SymbolName = SymbolName.drop_back();
503 
504  return SymbolName;
505 }
506 
507 } // end anonymous namespace
508 
509 std::string
511  const SymbolizableModule *DbiModuleDescriptor) {
512  // We can spoil names of symbols with C linkage, so use an heuristic
513  // approach to check if the name should be demangled.
514  if (Name.substr(0, 2) == "_Z") {
515  int status = 0;
516  char *DemangledName = itaniumDemangle(Name.c_str(), nullptr, nullptr, &status);
517  if (status != 0)
518  return Name;
519  std::string Result = DemangledName;
520  free(DemangledName);
521  return Result;
522  }
523 
524  if (!Name.empty() && Name.front() == '?') {
525  // Only do MSVC C++ demangling on symbols starting with '?'.
526  int status = 0;
527  char *DemangledName = microsoftDemangle(
528  Name.c_str(), nullptr, nullptr, &status,
531  if (status != 0)
532  return Name;
533  std::string Result = DemangledName;
534  free(DemangledName);
535  return Result;
536  }
537 
538  if (DbiModuleDescriptor && DbiModuleDescriptor->isWin32Module())
539  return std::string(demanglePE32ExternCFunc(Name));
540  return Name;
541 }
542 
543 } // namespace symbolize
544 } // namespace llvm
uint32_t crc32(ArrayRef< uint8_t > Data)
Definition: CRC.cpp:93
uint64_t CallInst * C
Represents either an error or a value T.
Definition: ErrorOr.h:56
void remove_filename(SmallVectorImpl< char > &path, Style style=Style::native)
Remove the last component from path unless it is the root dir.
Definition: Path.cpp:474
DILineInfo * getMutableFrame(unsigned Index)
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
Check if this string ends with the given Suffix.
Definition: StringRef.h:281
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Definition: AllocatorList.h:23
amdgpu Simplify well known AMD library false FunctionCallee Value const Twine & Name
StringRef getFileName() const
Definition: Binary.cpp:42
LLVM_NODISCARD size_t rfind(char C, size_t From=npos) const
Search for the last character C in the string.
Definition: StringRef.h:359
Expected< DILineInfo > symbolizeCode(const ObjectFile &Obj, object::SectionedAddress ModuleOffset)
Definition: Symbolize.cpp:62
This class is the base class for all object file types.
Definition: ObjectFile.h:221
ArrayRef< uint8_t > arrayRefFromStringRef(StringRef Input)
Construct a string ref from an array ref of unsigned chars.
Definition: StringExtras.h:60
bool all_of(R &&range, UnaryPredicate P)
Provide wrappers to std::all_of which take ranges instead of having to pass begin/end explicitly...
Definition: STLExtras.h:1165
Error takeError()
Take ownership of the stored error.
Definition: Error.h:552
virtual bool isWin32Module() const =0
Expected< std::unique_ptr< Binary > > createBinary(MemoryBufferRef Source, LLVMContext *Context=nullptr)
Create a Binary from Source, autodetecting the file type.
Definition: Binary.cpp:46
void append(SmallVectorImpl< char > &path, const Twine &a, const Twine &b="", const Twine &c="", const Twine &d="")
Append to path.
Definition: Path.cpp:455
constexpr char SymbolName[]
Key for Kernel::Metadata::mSymbolName.
LLVM_NODISCARD StringRef drop_front(size_t N=1) const
Return a StringRef equal to &#39;this&#39; but with the first N elements dropped.
Definition: StringRef.h:634
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Make path an absolute path.
Definition: Path.cpp:853
Tagged union holding either a T or a Error.
Definition: yaml2obj.h:21
Expected< DIGlobal > symbolizeData(const std::string &ModuleName, object::SectionedAddress ModuleOffset)
Definition: Symbolize.cpp:118
LLVM_NODISCARD StringRef substr(size_t Start, size_t N=npos) const
Return a reference to the substring from [Start, Start + N).
Definition: StringRef.h:592
LLVM_NODISCARD bool empty() const
empty - Check if the string is empty.
Definition: StringRef.h:140
StringRef str() const
Explicit conversion to StringRef.
Definition: SmallString.h:266
SmallString - A SmallString is just a SmallVector with methods and accessors that make it work better...
Definition: SmallString.h:25
section_iterator_range sections() const
Definition: ObjectFile.h:310
uint32_t getNumberOfFrames() const
Definition: DIContext.h:97
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
size - Get the array size.
Definition: ArrayRef.h:148
Error errorCodeToError(std::error_code EC)
Helper for converting an std::error_code to a Error.
Definition: Error.cpp:87
A format-neutral container for inlined code description.
Definition: DIContext.h:81
std::vector< std::string > DsymHints
Definition: Symbolize.h:44
static ErrorPolicy defaultErrorHandler(Error E)
Function used to handle default error reporting policy.
MSDemangleFlags
Definition: Demangle.h:35
Expected< std::vector< DILocal > > symbolizeFrame(const std::string &ModuleName, object::SectionedAddress ModuleOffset)
Definition: Symbolize.cpp:144
Expected< DIInliningInfo > symbolizeInlinedCode(const std::string &ModuleName, object::SectionedAddress ModuleOffset)
Definition: Symbolize.cpp:88
virtual DIInliningInfo symbolizeInlinedCode(object::SectionedAddress ModuleOffset, FunctionNameKind FNKind, bool UseSymbolTable) const =0
void consumeError(Error Err)
Consume a Error without doing anything.
Definition: Error.h:981
bool isLittleEndian() const
Definition: Binary.h:146
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="")
static std::string DemangleName(const std::string &Name, const SymbolizableModule *DbiModuleDescriptor)
Definition: Symbolize.cpp:510
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:102
iterator begin() const
Definition: StringRef.h:115
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:1245
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:642
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:117
virtual DIGlobal symbolizeData(object::SectionedAddress ModuleOffset) const =0
char * microsoftDemangle(const char *mangled_name, char *buf, size_t *n, int *status, MSDemangleFlags Flags=MSDF_None)
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