C++ DIInliningInfo::addFrame方法代码示例

DIInliningInfo ModuleInfo::symbolizeInlinedCode(
    uint64_t ModuleOffset, const LLVMSymbolizer::Options &Opts) const {
  DIInliningInfo InlinedContext;
  if (DebugInfoContext) {
    InlinedContext = DebugInfoContext->getInliningInfoForAddress(
        ModuleOffset, getDILineInfoSpecifierFlags(Opts));
  }
  // Make sure there is at least one frame in context.
  if (InlinedContext.getNumberOfFrames() == 0) {
    InlinedContext.addFrame(DILineInfo());
  }
  // Override the function name in lower frame with name from symbol table.
  if (Opts.PrintFunctions && Opts.UseSymbolTable) {
    DIInliningInfo PatchedInlinedContext;
    for (uint32_t i = 0, n = InlinedContext.getNumberOfFrames(); i < n; i++) {
      DILineInfo LineInfo = InlinedContext.getFrame(i);
      if (i == n - 1) {
        std::string FunctionName;
        uint64_t Start, Size;
        if (getNameFromSymbolTable(SymbolRef::ST_Function, ModuleOffset,
                                   FunctionName, Start, Size)) {
          patchFunctionNameInDILineInfo(FunctionName, LineInfo);
        }
      }
      PatchedInlinedContext.addFrame(LineInfo);
    }
    InlinedContext = PatchedInlinedContext;
  }
  return InlinedContext;
}

DIInliningInfo
DWARFContext::getInliningInfoForAddress(uint64_t Address,
                                        DILineInfoSpecifier Spec) {
  DIInliningInfo InliningInfo;

  DWARFCompileUnit *CU = getCompileUnitForAddress(Address);
  if (!CU)
    return InliningInfo;

  const DWARFLineTable *LineTable = nullptr;
  SmallVector<DWARFDie, 4> InlinedChain;
  CU->getInlinedChainForAddress(Address, InlinedChain);
  if (InlinedChain.size() == 0) {
    // If there is no DIE for address (e.g. it is in unavailable .dwo file),
    // try to at least get file/line info from symbol table.
    if (Spec.FLIKind != FileLineInfoKind::None) {
      DILineInfo Frame;
      LineTable = getLineTableForUnit(CU);
      if (LineTable &&
          LineTable->getFileLineInfoForAddress(Address, CU->getCompilationDir(),
                                               Spec.FLIKind, Frame))
        InliningInfo.addFrame(Frame);
    }
    return InliningInfo;
  }

  uint32_t CallFile = 0, CallLine = 0, CallColumn = 0;
  for (uint32_t i = 0, n = InlinedChain.size(); i != n; i++) {
    DWARFDie &FunctionDIE = InlinedChain[i];
    DILineInfo Frame;
    // Get function name if necessary.
    if (const char *Name = FunctionDIE.getSubroutineName(Spec.FNKind))
      Frame.FunctionName = Name;
    if (Spec.FLIKind != FileLineInfoKind::None) {
      if (i == 0) {
        // For the topmost frame, initialize the line table of this
        // compile unit and fetch file/line info from it.
        LineTable = getLineTableForUnit(CU);
        // For the topmost routine, get file/line info from line table.
        if (LineTable)
          LineTable->getFileLineInfoForAddress(Address, CU->getCompilationDir(),
                                               Spec.FLIKind, Frame);
      } else {
        // Otherwise, use call file, call line and call column from
        // previous DIE in inlined chain.
        if (LineTable)
          LineTable->getFileNameByIndex(CallFile, CU->getCompilationDir(),
                                        Spec.FLIKind, Frame.FileName);
        Frame.Line = CallLine;
        Frame.Column = CallColumn;
      }
      // Get call file/line/column of a current DIE.
      if (i + 1 < n) {
        FunctionDIE.getCallerFrame(CallFile, CallLine, CallColumn);
      }
    }
    InliningInfo.addFrame(Frame);
  }
  return InliningInfo;
}

DIInliningInfo
PDBContext::getInliningInfoForAddress(uint64_t Address,
                                      DILineInfoSpecifier Specifier) {
  DIInliningInfo InlineInfo;
  DILineInfo Frame = getLineInfoForAddress(Address, Specifier);
  InlineInfo.addFrame(Frame);
  return InlineInfo;
}

DIInliningInfo DWARFContext::getInliningInfoForAddress(uint64_t Address,
    DILineInfoSpecifier Specifier) {
  DWARFCompileUnit *CU = getCompileUnitForAddress(Address);
  if (!CU)
    return DIInliningInfo();

  const DWARFDebugInfoEntryInlinedChain &InlinedChain =
      CU->getInlinedChainForAddress(Address);
  if (InlinedChain.DIEs.size() == 0)
    return DIInliningInfo();

  DIInliningInfo InliningInfo;
  uint32_t CallFile = 0, CallLine = 0, CallColumn = 0;
  const DWARFLineTable *LineTable = 0;
  for (uint32_t i = 0, n = InlinedChain.DIEs.size(); i != n; i++) {
    const DWARFDebugInfoEntryMinimal &FunctionDIE = InlinedChain.DIEs[i];
    std::string FileName = "<invalid>";
    std::string FunctionName = "<invalid>";
    uint32_t Line = 0;
    uint32_t Column = 0;
    // Get function name if necessary.
    if (Specifier.needs(DILineInfoSpecifier::FunctionName)) {
      if (const char *Name = FunctionDIE.getSubroutineName(InlinedChain.U))
        FunctionName = Name;
    }
    if (Specifier.needs(DILineInfoSpecifier::FileLineInfo)) {
      const bool NeedsAbsoluteFilePath =
          Specifier.needs(DILineInfoSpecifier::AbsoluteFilePath);
      if (i == 0) {
        // For the topmost frame, initialize the line table of this
        // compile unit and fetch file/line info from it.
        LineTable = getLineTableForCompileUnit(CU);
        // For the topmost routine, get file/line info from line table.
        getFileLineInfoForCompileUnit(CU, LineTable, Address,
                                      NeedsAbsoluteFilePath,
                                      FileName, Line, Column);
      } else {
        // Otherwise, use call file, call line and call column from
        // previous DIE in inlined chain.
        getFileNameForCompileUnit(CU, LineTable, CallFile,
                                  NeedsAbsoluteFilePath, FileName);
        Line = CallLine;
        Column = CallColumn;
      }
      // Get call file/line/column of a current DIE.
      if (i + 1 < n) {
        FunctionDIE.getCallerFrame(InlinedChain.U, CallFile, CallLine,
                                   CallColumn);
      }
    }
    DILineInfo Frame(StringRef(FileName), StringRef(FunctionName),
                     Line, Column);
    InliningInfo.addFrame(Frame);
  }
  return InliningInfo;
}

DIInliningInfo SymbolizableObjectFile::symbolizeInlinedCode(
    uint64_t ModuleOffset, FunctionNameKind FNKind, bool UseSymbolTable) const {
  DIInliningInfo InlinedContext;

  if (DebugInfoContext)
    InlinedContext = DebugInfoContext->getInliningInfoForAddress(
        ModuleOffset, getDILineInfoSpecifier(FNKind));
  // Make sure there is at least one frame in context.
  if (InlinedContext.getNumberOfFrames() == 0)
    InlinedContext.addFrame(DILineInfo());

  // Override the function name in lower frame with name from symbol table.
  if (shouldOverrideWithSymbolTable(FNKind, UseSymbolTable)) {
    std::string FunctionName;
    uint64_t Start, Size;
    if (getNameFromSymbolTable(SymbolRef::ST_Function, ModuleOffset,
                               FunctionName, Start, Size)) {
      InlinedContext.getMutableFrame(InlinedContext.getNumberOfFrames() - 1)
          ->FunctionName = FunctionName;
    }
  }

  return InlinedContext;
}

DIInliningInfo DWARFContext::getInliningInfoForAddress(uint64_t Address,
    DILineInfoSpecifier Specifier) {
  DIInliningInfo InliningInfo;

  DWARFCompileUnit *CU = getCompileUnitForAddress(Address);
  if (!CU)
    return InliningInfo;

  const DWARFLineTable *LineTable = nullptr;
  const bool NeedsAbsoluteFilePath =
      Specifier.needs(DILineInfoSpecifier::AbsoluteFilePath);
  const DWARFDebugInfoEntryInlinedChain &InlinedChain =
      CU->getInlinedChainForAddress(Address);
  if (InlinedChain.DIEs.size() == 0) {
    // If there is no DIE for address (e.g. it is in unavailable .dwo file),
    // try to at least get file/line info from symbol table.
    if (Specifier.needs(DILineInfoSpecifier::FileLineInfo)) {
      DILineInfo Frame;
      LineTable = getLineTableForCompileUnit(CU);
      if (getFileLineInfoForCompileUnit(CU, LineTable, Address,
                                        NeedsAbsoluteFilePath, Frame)) {
        InliningInfo.addFrame(Frame);
      }
    }
    return InliningInfo;
  }

  uint32_t CallFile = 0, CallLine = 0, CallColumn = 0;
  for (uint32_t i = 0, n = InlinedChain.DIEs.size(); i != n; i++) {
    const DWARFDebugInfoEntryMinimal &FunctionDIE = InlinedChain.DIEs[i];
    DILineInfo Frame;
    // Get function name if necessary.
    if (Specifier.needs(DILineInfoSpecifier::FunctionName)) {
      if (const char *Name = FunctionDIE.getSubroutineName(InlinedChain.U))
        Frame.FunctionName = Name;
    }
    if (Specifier.needs(DILineInfoSpecifier::FileLineInfo)) {
      if (i == 0) {
        // For the topmost frame, initialize the line table of this
        // compile unit and fetch file/line info from it.
        LineTable = getLineTableForCompileUnit(CU);
        // For the topmost routine, get file/line info from line table.
        getFileLineInfoForCompileUnit(CU, LineTable, Address,
                                      NeedsAbsoluteFilePath, Frame);
      } else {
        // Otherwise, use call file, call line and call column from
        // previous DIE in inlined chain.
        getFileNameForCompileUnit(CU, LineTable, CallFile,
                                  NeedsAbsoluteFilePath, Frame.FileName);
        Frame.Line = CallLine;
        Frame.Column = CallColumn;
      }
      // Get call file/line/column of a current DIE.
      if (i + 1 < n) {
        FunctionDIE.getCallerFrame(InlinedChain.U, CallFile, CallLine,
                                   CallColumn);
      }
    }
    InliningInfo.addFrame(Frame);
  }
  return InliningInfo;
}