LLVM  9.0.0svn
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::symbolizeCode(const std::string &ModuleName,
56  object::SectionedAddress ModuleOffset,
57  StringRef DWPName) {
59  if (auto InfoOrErr = getOrCreateModuleInfo(ModuleName, DWPName))
60  Info = InfoOrErr.get();
61  else
62  return InfoOrErr.takeError();
63 
64  // A null module means an error has already been reported. Return an empty
65  // result.
66  if (!Info)
67  return DILineInfo();
68 
69  // If the user is giving us relative addresses, add the preferred base of the
70  // object to the offset before we do the query. It's what DIContext expects.
71  if (Opts.RelativeAddresses)
72  ModuleOffset.Address += Info->getModulePreferredBase();
73 
74  DILineInfo LineInfo = Info->symbolizeCode(ModuleOffset, Opts.PrintFunctions,
75  Opts.UseSymbolTable);
76  if (Opts.Demangle)
77  LineInfo.FunctionName = DemangleName(LineInfo.FunctionName, Info);
78  return LineInfo;
79 }
80 
82 LLVMSymbolizer::symbolizeInlinedCode(const std::string &ModuleName,
83  object::SectionedAddress ModuleOffset,
84  StringRef DWPName) {
86  if (auto InfoOrErr = getOrCreateModuleInfo(ModuleName, DWPName))
87  Info = InfoOrErr.get();
88  else
89  return InfoOrErr.takeError();
90 
91  // A null module means an error has already been reported. Return an empty
92  // result.
93  if (!Info)
94  return DIInliningInfo();
95 
96  // If the user is giving us relative addresses, add the preferred base of the
97  // object to the offset before we do the query. It's what DIContext expects.
98  if (Opts.RelativeAddresses)
99  ModuleOffset.Address += Info->getModulePreferredBase();
100 
101  DIInliningInfo InlinedContext = Info->symbolizeInlinedCode(
102  ModuleOffset, Opts.PrintFunctions, Opts.UseSymbolTable);
103  if (Opts.Demangle) {
104  for (int i = 0, n = InlinedContext.getNumberOfFrames(); i < n; i++) {
105  auto *Frame = InlinedContext.getMutableFrame(i);
106  Frame->FunctionName = DemangleName(Frame->FunctionName, Info);
107  }
108  }
109  return InlinedContext;
110 }
111 
113 LLVMSymbolizer::symbolizeData(const std::string &ModuleName,
114  object::SectionedAddress ModuleOffset) {
116  if (auto InfoOrErr = getOrCreateModuleInfo(ModuleName))
117  Info = InfoOrErr.get();
118  else
119  return InfoOrErr.takeError();
120 
121  // A null module means an error has already been reported. Return an empty
122  // result.
123  if (!Info)
124  return DIGlobal();
125 
126  // If the user is giving us relative addresses, add the preferred base of
127  // the object to the offset before we do the query. It's what DIContext
128  // expects.
129  if (Opts.RelativeAddresses)
130  ModuleOffset.Address += Info->getModulePreferredBase();
131 
132  DIGlobal Global = Info->symbolizeData(ModuleOffset);
133  if (Opts.Demangle)
134  Global.Name = DemangleName(Global.Name, Info);
135  return Global;
136 }
137 
139  ObjectForUBPathAndArch.clear();
140  BinaryForPath.clear();
141  ObjectPairForPathArch.clear();
142  Modules.clear();
143 }
144 
145 namespace {
146 
147 // For Path="/path/to/foo" and Basename="foo" assume that debug info is in
148 // /path/to/foo.dSYM/Contents/Resources/DWARF/foo.
149 // For Path="/path/to/bar.dSYM" and Basename="foo" assume that debug info is in
150 // /path/to/bar.dSYM/Contents/Resources/DWARF/foo.
151 std::string getDarwinDWARFResourceForPath(
152  const std::string &Path, const std::string &Basename) {
153  SmallString<16> ResourceName = StringRef(Path);
154  if (sys::path::extension(Path) != ".dSYM") {
155  ResourceName += ".dSYM";
156  }
157  sys::path::append(ResourceName, "Contents", "Resources", "DWARF");
158  sys::path::append(ResourceName, Basename);
159  return ResourceName.str();
160 }
161 
162 bool checkFileCRC(StringRef Path, uint32_t CRCHash) {
165  if (!MB)
166  return false;
167  return CRCHash == llvm::crc32(0, MB.get()->getBuffer());
168 }
169 
170 bool findDebugBinary(const std::string &OrigPath,
171  const std::string &DebuglinkName, uint32_t CRCHash,
172  const std::string &FallbackDebugPath,
173  std::string &Result) {
174  SmallString<16> OrigDir(OrigPath);
176  SmallString<16> DebugPath = OrigDir;
177  // Try relative/path/to/original_binary/debuglink_name
178  llvm::sys::path::append(DebugPath, DebuglinkName);
179  if (checkFileCRC(DebugPath, CRCHash)) {
180  Result = DebugPath.str();
181  return true;
182  }
183  // Try relative/path/to/original_binary/.debug/debuglink_name
184  DebugPath = OrigDir;
185  llvm::sys::path::append(DebugPath, ".debug", DebuglinkName);
186  if (checkFileCRC(DebugPath, CRCHash)) {
187  Result = DebugPath.str();
188  return true;
189  }
190  // Make the path absolute so that lookups will go to
191  // "/usr/lib/debug/full/path/to/debug", not
192  // "/usr/lib/debug/to/debug"
194  if (!FallbackDebugPath.empty()) {
195  // Try <FallbackDebugPath>/absolute/path/to/original_binary/debuglink_name
196  DebugPath = FallbackDebugPath;
197  } else {
198 #if defined(__NetBSD__)
199  // Try /usr/libdata/debug/absolute/path/to/original_binary/debuglink_name
200  DebugPath = "/usr/libdata/debug";
201 #else
202  // Try /usr/lib/debug/absolute/path/to/original_binary/debuglink_name
203  DebugPath = "/usr/lib/debug";
204 #endif
205  }
207  DebuglinkName);
208  if (checkFileCRC(DebugPath, CRCHash)) {
209  Result = DebugPath.str();
210  return true;
211  }
212  return false;
213 }
214 
215 bool getGNUDebuglinkContents(const ObjectFile *Obj, std::string &DebugName,
216  uint32_t &CRCHash) {
217  if (!Obj)
218  return false;
219  for (const SectionRef &Section : Obj->sections()) {
220  StringRef Name;
221  Section.getName(Name);
222  Name = Name.substr(Name.find_first_not_of("._"));
223  if (Name == "gnu_debuglink") {
224  Expected<StringRef> ContentsOrErr = Section.getContents();
225  if (!ContentsOrErr) {
226  consumeError(ContentsOrErr.takeError());
227  return false;
228  }
229  DataExtractor DE(*ContentsOrErr, Obj->isLittleEndian(), 0);
230  uint32_t Offset = 0;
231  if (const char *DebugNameStr = DE.getCStr(&Offset)) {
232  // 4-byte align the offset.
233  Offset = (Offset + 3) & ~0x3;
234  if (DE.isValidOffsetForDataOfSize(Offset, 4)) {
235  DebugName = DebugNameStr;
236  CRCHash = DE.getU32(&Offset);
237  return true;
238  }
239  }
240  break;
241  }
242  }
243  return false;
244 }
245 
246 bool darwinDsymMatchesBinary(const MachOObjectFile *DbgObj,
247  const MachOObjectFile *Obj) {
248  ArrayRef<uint8_t> dbg_uuid = DbgObj->getUuid();
249  ArrayRef<uint8_t> bin_uuid = Obj->getUuid();
250  if (dbg_uuid.empty() || bin_uuid.empty())
251  return false;
252  return !memcmp(dbg_uuid.data(), bin_uuid.data(), dbg_uuid.size());
253 }
254 
255 } // end anonymous namespace
256 
257 ObjectFile *LLVMSymbolizer::lookUpDsymFile(const std::string &ExePath,
258  const MachOObjectFile *MachExeObj, const std::string &ArchName) {
259  // On Darwin we may find DWARF in separate object file in
260  // resource directory.
261  std::vector<std::string> DsymPaths;
262  StringRef Filename = sys::path::filename(ExePath);
263  DsymPaths.push_back(getDarwinDWARFResourceForPath(ExePath, Filename));
264  for (const auto &Path : Opts.DsymHints) {
265  DsymPaths.push_back(getDarwinDWARFResourceForPath(Path, Filename));
266  }
267  for (const auto &Path : DsymPaths) {
268  auto DbgObjOrErr = getOrCreateObject(Path, ArchName);
269  if (!DbgObjOrErr) {
270  // Ignore errors, the file might not exist.
271  consumeError(DbgObjOrErr.takeError());
272  continue;
273  }
274  ObjectFile *DbgObj = DbgObjOrErr.get();
275  if (!DbgObj)
276  continue;
277  const MachOObjectFile *MachDbgObj = dyn_cast<const MachOObjectFile>(DbgObj);
278  if (!MachDbgObj)
279  continue;
280  if (darwinDsymMatchesBinary(MachDbgObj, MachExeObj))
281  return DbgObj;
282  }
283  return nullptr;
284 }
285 
286 ObjectFile *LLVMSymbolizer::lookUpDebuglinkObject(const std::string &Path,
287  const ObjectFile *Obj,
288  const std::string &ArchName) {
289  std::string DebuglinkName;
290  uint32_t CRCHash;
291  std::string DebugBinaryPath;
292  if (!getGNUDebuglinkContents(Obj, DebuglinkName, CRCHash))
293  return nullptr;
294  if (!findDebugBinary(Path, DebuglinkName, CRCHash, Opts.FallbackDebugPath,
295  DebugBinaryPath))
296  return nullptr;
297  auto DbgObjOrErr = getOrCreateObject(DebugBinaryPath, ArchName);
298  if (!DbgObjOrErr) {
299  // Ignore errors, the file might not exist.
300  consumeError(DbgObjOrErr.takeError());
301  return nullptr;
302  }
303  return DbgObjOrErr.get();
304 }
305 
307 LLVMSymbolizer::getOrCreateObjectPair(const std::string &Path,
308  const std::string &ArchName) {
309  const auto &I = ObjectPairForPathArch.find(std::make_pair(Path, ArchName));
310  if (I != ObjectPairForPathArch.end()) {
311  return I->second;
312  }
313 
314  auto ObjOrErr = getOrCreateObject(Path, ArchName);
315  if (!ObjOrErr) {
316  ObjectPairForPathArch.insert(std::make_pair(std::make_pair(Path, ArchName),
317  ObjectPair(nullptr, nullptr)));
318  return ObjOrErr.takeError();
319  }
320 
321  ObjectFile *Obj = ObjOrErr.get();
322  assert(Obj != nullptr);
323  ObjectFile *DbgObj = nullptr;
324 
325  if (auto MachObj = dyn_cast<const MachOObjectFile>(Obj))
326  DbgObj = lookUpDsymFile(Path, MachObj, ArchName);
327  if (!DbgObj)
328  DbgObj = lookUpDebuglinkObject(Path, Obj, ArchName);
329  if (!DbgObj)
330  DbgObj = Obj;
331  ObjectPair Res = std::make_pair(Obj, DbgObj);
332  ObjectPairForPathArch.insert(
333  std::make_pair(std::make_pair(Path, ArchName), Res));
334  return Res;
335 }
336 
338 LLVMSymbolizer::getOrCreateObject(const std::string &Path,
339  const std::string &ArchName) {
340  const auto &I = BinaryForPath.find(Path);
341  Binary *Bin = nullptr;
342  if (I == BinaryForPath.end()) {
344  if (!BinOrErr) {
345  BinaryForPath.insert(std::make_pair(Path, OwningBinary<Binary>()));
346  return BinOrErr.takeError();
347  }
348  Bin = BinOrErr->getBinary();
349  BinaryForPath.insert(std::make_pair(Path, std::move(BinOrErr.get())));
350  } else {
351  Bin = I->second.getBinary();
352  }
353 
354  if (!Bin)
355  return static_cast<ObjectFile *>(nullptr);
356 
357  if (MachOUniversalBinary *UB = dyn_cast_or_null<MachOUniversalBinary>(Bin)) {
358  const auto &I = ObjectForUBPathAndArch.find(std::make_pair(Path, ArchName));
359  if (I != ObjectForUBPathAndArch.end()) {
360  return I->second.get();
361  }
363  UB->getObjectForArch(ArchName);
364  if (!ObjOrErr) {
365  ObjectForUBPathAndArch.insert(std::make_pair(
366  std::make_pair(Path, ArchName), std::unique_ptr<ObjectFile>()));
367  return ObjOrErr.takeError();
368  }
369  ObjectFile *Res = ObjOrErr->get();
370  ObjectForUBPathAndArch.insert(std::make_pair(std::make_pair(Path, ArchName),
371  std::move(ObjOrErr.get())));
372  return Res;
373  }
374  if (Bin->isObject()) {
375  return cast<ObjectFile>(Bin);
376  }
377  return errorCodeToError(object_error::arch_not_found);
378 }
379 
381 LLVMSymbolizer::getOrCreateModuleInfo(const std::string &ModuleName,
382  StringRef DWPName) {
383  const auto &I = Modules.find(ModuleName);
384  if (I != Modules.end()) {
385  return I->second.get();
386  }
387  std::string BinaryName = ModuleName;
388  std::string ArchName = Opts.DefaultArch;
389  size_t ColonPos = ModuleName.find_last_of(':');
390  // Verify that substring after colon form a valid arch name.
391  if (ColonPos != std::string::npos) {
392  std::string ArchStr = ModuleName.substr(ColonPos + 1);
393  if (Triple(ArchStr).getArch() != Triple::UnknownArch) {
394  BinaryName = ModuleName.substr(0, ColonPos);
395  ArchName = ArchStr;
396  }
397  }
398  auto ObjectsOrErr = getOrCreateObjectPair(BinaryName, ArchName);
399  if (!ObjectsOrErr) {
400  // Failed to find valid object file.
401  Modules.insert(
402  std::make_pair(ModuleName, std::unique_ptr<SymbolizableModule>()));
403  return ObjectsOrErr.takeError();
404  }
405  ObjectPair Objects = ObjectsOrErr.get();
406 
407  std::unique_ptr<DIContext> Context;
408  // If this is a COFF object containing PDB info, use a PDBContext to
409  // symbolize. Otherwise, use DWARF.
410  if (auto CoffObject = dyn_cast<COFFObjectFile>(Objects.first)) {
411  const codeview::DebugInfo *DebugInfo;
412  StringRef PDBFileName;
413  auto EC = CoffObject->getDebugPDBInfo(DebugInfo, PDBFileName);
414  if (!EC && DebugInfo != nullptr && !PDBFileName.empty()) {
415  using namespace pdb;
416  std::unique_ptr<IPDBSession> Session;
417  if (auto Err = loadDataForEXE(PDB_ReaderType::DIA,
418  Objects.first->getFileName(), Session)) {
419  Modules.insert(
420  std::make_pair(ModuleName, std::unique_ptr<SymbolizableModule>()));
421  // Return along the PDB filename to provide more context
422  return createFileError(PDBFileName, std::move(Err));
423  }
424  Context.reset(new PDBContext(*CoffObject, std::move(Session)));
425  }
426  }
427  if (!Context)
428  Context = DWARFContext::create(*Objects.second, nullptr,
430  assert(Context);
431  auto InfoOrErr =
432  SymbolizableObjectFile::create(Objects.first, std::move(Context));
433  std::unique_ptr<SymbolizableModule> SymMod;
434  if (InfoOrErr)
435  SymMod = std::move(InfoOrErr.get());
436  auto InsertResult =
437  Modules.insert(std::make_pair(ModuleName, std::move(SymMod)));
438  assert(InsertResult.second);
439  if (auto EC = InfoOrErr.getError())
440  return errorCodeToError(EC);
441  return InsertResult.first->second.get();
442 }
443 
444 namespace {
445 
446 // Undo these various manglings for Win32 extern "C" functions:
447 // cdecl - _foo
448 // stdcall - _foo@12
449 // fastcall - @foo@12
450 // vectorcall - foo@@12
451 // These are all different linkage names for 'foo'.
452 StringRef demanglePE32ExternCFunc(StringRef SymbolName) {
453  // Remove any '_' or '@' prefix.
454  char Front = SymbolName.empty() ? '\0' : SymbolName[0];
455  if (Front == '_' || Front == '@')
456  SymbolName = SymbolName.drop_front();
457 
458  // Remove any '@[0-9]+' suffix.
459  if (Front != '?') {
460  size_t AtPos = SymbolName.rfind('@');
461  if (AtPos != StringRef::npos &&
462  std::all_of(SymbolName.begin() + AtPos + 1, SymbolName.end(),
463  [](char C) { return C >= '0' && C <= '9'; })) {
464  SymbolName = SymbolName.substr(0, AtPos);
465  }
466  }
467 
468  // Remove any ending '@' for vectorcall.
469  if (SymbolName.endswith("@"))
470  SymbolName = SymbolName.drop_back();
471 
472  return SymbolName;
473 }
474 
475 } // end anonymous namespace
476 
477 std::string
479  const SymbolizableModule *DbiModuleDescriptor) {
480  // We can spoil names of symbols with C linkage, so use an heuristic
481  // approach to check if the name should be demangled.
482  if (Name.substr(0, 2) == "_Z") {
483  int status = 0;
484  char *DemangledName = itaniumDemangle(Name.c_str(), nullptr, nullptr, &status);
485  if (status != 0)
486  return Name;
487  std::string Result = DemangledName;
488  free(DemangledName);
489  return Result;
490  }
491 
492 #if defined(_MSC_VER)
493  if (!Name.empty() && Name.front() == '?') {
494  // Only do MSVC C++ demangling on symbols starting with '?'.
495  char DemangledName[1024] = {0};
496  DWORD result = ::UnDecorateSymbolName(
497  Name.c_str(), DemangledName, 1023,
498  UNDNAME_NO_ACCESS_SPECIFIERS | // Strip public, private, protected
499  UNDNAME_NO_ALLOCATION_LANGUAGE | // Strip __thiscall, __stdcall, etc
500  UNDNAME_NO_THROW_SIGNATURES | // Strip throw() specifications
501  UNDNAME_NO_MEMBER_TYPE | // Strip virtual, static, etc specifiers
502  UNDNAME_NO_MS_KEYWORDS | // Strip all MS extension keywords
503  UNDNAME_NO_FUNCTION_RETURNS); // Strip function return types
504  return (result == 0) ? Name : std::string(DemangledName);
505  }
506 #endif
507  if (DbiModuleDescriptor && DbiModuleDescriptor->isWin32Module())
508  return std::string(demanglePE32ExternCFunc(Name));
509  return Name;
510 }
511 
512 } // namespace symbolize
513 } // namespace llvm
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:88
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:267
This class represents lattice values for constants.
Definition: AllocatorList.h:23
amdgpu Simplify well known AMD library false FunctionCallee Value const Twine & Name
LLVM_NODISCARD size_t rfind(char C, size_t From=npos) const
Search for the last character C in the string.
Definition: StringRef.h:345
This class is the base class for all object file types.
Definition: ObjectFile.h:226
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:1185
Error takeError()
Take ownership of the stored error.
Definition: Error.h:552
virtual bool isWin32Module() const =0
A format-neutral container for source line information.
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Expected< std::unique_ptr< Binary > > createBinary(MemoryBufferRef Source, LLVMContext *Context=nullptr)
Create a Binary from Source, autodetecting the file type.
Definition: Binary.cpp:45
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:620
void make_absolute(const Twine &current_directory, SmallVectorImpl< char > &path)
Make path an absolute path.
Definition: Path.cpp:853
Tagged union holding either a T or a Error.
Definition: CachePruning.h:22
Expected< DIGlobal > symbolizeData(const std::string &ModuleName, object::SectionedAddress ModuleOffset)
Definition: Symbolize.cpp:113
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:578
LLVM_NODISCARD bool empty() const
empty - Check if the string is empty.
Definition: StringRef.h:126
StringRef str() const
Explicit conversion to StringRef.
Definition: SmallString.h:266
Expected< DIInliningInfo > symbolizeInlinedCode(const std::string &ModuleName, object::SectionedAddress ModuleOffset, StringRef DWPName="")
Definition: Symbolize.cpp:82
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:315
uint32_t getNumberOfFrames() const
Definition: DIContext.h:93
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:77
LLVM_NODISCARD size_t find_first_not_of(char C, size_t From=0) const
Find the first character in the string that is not C or npos if not found.
Definition: StringRef.cpp:249
std::vector< std::string > DsymHints
Definition: Symbolize.h:43
static ErrorPolicy defaultErrorHandler(Error E)
Function used to handle default error reporting policy.
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:138
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:478
virtual DILineInfo symbolizeCode(object::SectionedAddress ModuleOffset, FunctionNameKind FNKind, bool UseSymbolTable) const =0
ArrayRef< uint8_t > getUuid() const
std::string Name
Definition: DIContext.h:109
std::string FunctionName
Definition: DIContext.h:32
reference get()
Returns a reference to the stored T value.
Definition: Error.h:532
bool isObject() const
Definition: Binary.h:98
iterator begin() const
Definition: StringRef.h:101
virtual uint64_t getModulePreferredBase() const =0
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Open the specified file as a MemoryBuffer, or open stdin if the Filename is "-".
Merge contiguous icmps into a memcmp
Definition: MergeICmps.cpp:922
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
Expected< DILineInfo > symbolizeCode(const std::string &ModuleName, object::SectionedAddress ModuleOffset, StringRef DWPName="")
Definition: Symbolize.cpp:55
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:1214
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(object::ObjectFile *Obj, std::unique_ptr< DIContext > DICtx)
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:108
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