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C++ DWARFUnit::getContext方法代码示例

本文整理汇总了C++中DWARFUnit::getContext方法的典型用法代码示例。如果您正苦于以下问题：C++ DWARFUnit::getContext方法的具体用法？C++ DWARFUnit::getContext怎么用？C++ DWARFUnit::getContext使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DWARFUnit的用法示例。


在下文中一共展示了DWARFUnit::getContext方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: dumpAttribute

static void dumpAttribute(raw_ostream &OS, const DWARFDie &Die,
                          uint32_t *OffsetPtr, dwarf::Attribute Attr,
                          dwarf::Form Form, unsigned Indent,
                          DIDumpOptions DumpOpts) {
  if (!Die.isValid())
    return;
  const char BaseIndent[] = "            ";
  OS << BaseIndent;
  OS.indent(Indent + 2);
  WithColor(OS, HighlightColor::Attribute) << formatv("{0}", Attr);

  if (DumpOpts.Verbose || DumpOpts.ShowForm)
    OS << formatv(" [{0}]", Form);

  DWARFUnit *U = Die.getDwarfUnit();
  DWARFFormValue FormValue = DWARFFormValue::createFromUnit(Form, U, OffsetPtr);

  OS << "\t(";

  StringRef Name;
  std::string File;
  auto Color = HighlightColor::Enumerator;
  if (Attr == DW_AT_decl_file || Attr == DW_AT_call_file) {
    Color = HighlightColor::String;
    if (const auto *LT = U->getContext().getLineTableForUnit(U))
      if (LT->getFileNameByIndex(
              FormValue.getAsUnsignedConstant().getValue(),
              U->getCompilationDir(),
              DILineInfoSpecifier::FileLineInfoKind::AbsoluteFilePath, File)) {
        File = '"' + File + '"';
        Name = File;
      }
  } else if (Optional<uint64_t> Val = FormValue.getAsUnsignedConstant())
    Name = AttributeValueString(Attr, *Val);

  if (!Name.empty())
    WithColor(OS, Color) << Name;
  else if (Attr == DW_AT_decl_line || Attr == DW_AT_call_line)
    OS << *FormValue.getAsUnsignedConstant();
  else if (Attr == DW_AT_high_pc && !DumpOpts.ShowForm && !DumpOpts.Verbose &&
           FormValue.getAsUnsignedConstant()) {
    if (DumpOpts.ShowAddresses) {
      // Print the actual address rather than the offset.
      uint64_t LowPC, HighPC, Index;
      if (Die.getLowAndHighPC(LowPC, HighPC, Index))
        OS << format("0x%016" PRIx64, HighPC);
      else
        FormValue.dump(OS, DumpOpts);
    }
  } else if (DWARFAttribute::mayHaveLocationDescription(Attr))
    dumpLocation(OS, FormValue, U, sizeof(BaseIndent) + Indent + 4, DumpOpts);
  else
    FormValue.dump(OS, DumpOpts);

  std::string Space = DumpOpts.ShowAddresses ? " " : "";

  // We have dumped the attribute raw value. For some attributes
  // having both the raw value and the pretty-printed value is
  // interesting. These attributes are handled below.
  if (Attr == DW_AT_specification || Attr == DW_AT_abstract_origin) {
    if (const char *Name =
            Die.getAttributeValueAsReferencedDie(FormValue).getName(
                DINameKind::LinkageName))
      OS << Space << "\"" << Name << '\"';
  } else if (Attr == DW_AT_type) {
    OS << Space << "\"";
    dumpTypeName(OS, Die.getAttributeValueAsReferencedDie(FormValue));
    OS << '"';
  } else if (Attr == DW_AT_APPLE_property_attribute) {
    if (Optional<uint64_t> OptVal = FormValue.getAsUnsignedConstant())
      dumpApplePropertyAttribute(OS, *OptVal);
  } else if (Attr == DW_AT_ranges) {
    const DWARFObject &Obj = Die.getDwarfUnit()->getContext().getDWARFObj();
    // For DW_FORM_rnglistx we need to dump the offset separately, since
    // we have only dumped the index so far.
    if (FormValue.getForm() == DW_FORM_rnglistx)
      if (auto RangeListOffset =
              U->getRnglistOffset(*FormValue.getAsSectionOffset())) {
        DWARFFormValue FV = DWARFFormValue::createFromUValue(
            dwarf::DW_FORM_sec_offset, *RangeListOffset);
        FV.dump(OS, DumpOpts);
      }
    if (auto RangesOrError = Die.getAddressRanges())
      dumpRanges(Obj, OS, RangesOrError.get(), U->getAddressByteSize(),
                 sizeof(BaseIndent) + Indent + 4, DumpOpts);
    else
      WithColor::error() << "decoding address ranges: "
                         << toString(RangesOrError.takeError()) << '\n';
  }

  OS << ")\n";
}
开发者ID:jvesely，项目名称:llvm，代码行数:92，代码来源:DWARFDie.cpp

示例2: dumpAttribute

static void dumpAttribute(raw_ostream &OS, const DWARFDie &Die,
                          uint32_t *OffsetPtr, dwarf::Attribute Attr,
                          dwarf::Form Form, unsigned Indent) {
  if (!Die.isValid())
    return;
  const char BaseIndent[] = "            ";
  OS << BaseIndent;
  OS.indent(Indent+2);
  auto attrString = AttributeString(Attr);
  if (!attrString.empty())
    WithColor(OS, syntax::Attribute) << attrString;
  else
    WithColor(OS, syntax::Attribute).get() << format("DW_AT_Unknown_%x", Attr);
  
  auto formString = FormEncodingString(Form);
  if (!formString.empty())
    OS << " [" << formString << ']';
  else
    OS << format(" [DW_FORM_Unknown_%x]", Form);
  
  DWARFUnit *U = Die.getDwarfUnit();
  DWARFFormValue formValue(Form);
  
  if (!formValue.extractValue(U->getDebugInfoExtractor(), OffsetPtr, U))
    return;
  
  OS << "\t(";
  
  StringRef Name;
  std::string File;
  auto Color = syntax::Enumerator;
  if (Attr == DW_AT_decl_file || Attr == DW_AT_call_file) {
    Color = syntax::String;
    if (const auto *LT = U->getContext().getLineTableForUnit(U))
      if (LT->getFileNameByIndex(formValue.getAsUnsignedConstant().getValue(), U->getCompilationDir(), DILineInfoSpecifier::FileLineInfoKind::AbsoluteFilePath, File)) {
        File = '"' + File + '"';
        Name = File;
      }
  } else if (Optional<uint64_t> Val = formValue.getAsUnsignedConstant())
    Name = AttributeValueString(Attr, *Val);
  
  if (!Name.empty())
    WithColor(OS, Color) << Name;
  else if (Attr == DW_AT_decl_line || Attr == DW_AT_call_line)
    OS << *formValue.getAsUnsignedConstant();
  else
    formValue.dump(OS);
  
  // We have dumped the attribute raw value. For some attributes
  // having both the raw value and the pretty-printed value is
  // interesting. These attributes are handled below.
  if (Attr == DW_AT_specification || Attr == DW_AT_abstract_origin) {
    if (const char *Name = Die.getAttributeValueAsReferencedDie(Attr).getName(DINameKind::LinkageName))
        OS << " \"" << Name << '\"';
  } else if (Attr == DW_AT_APPLE_property_attribute) {
    if (Optional<uint64_t> OptVal = formValue.getAsUnsignedConstant())
      dumpApplePropertyAttribute(OS, *OptVal);
  } else if (Attr == DW_AT_ranges) {
    dumpRanges(OS, Die.getAddressRanges(), U->getAddressByteSize(),
               sizeof(BaseIndent)+Indent+4);
  }
  
  OS << ")\n";
}
开发者ID:bugsnag，项目名称:llvm，代码行数:64，代码来源:DWARFDie.cpp

示例3: dumpAttribute

static void dumpAttribute(raw_ostream &OS, const DWARFDie &Die,
                          uint32_t *OffsetPtr, dwarf::Attribute Attr,
                          dwarf::Form Form, unsigned Indent,
                          DIDumpOptions DumpOpts) {
  if (!Die.isValid())
    return;
  const char BaseIndent[] = "            ";
  OS << BaseIndent;
  OS.indent(Indent + 2);
  auto attrString = AttributeString(Attr);
  if (!attrString.empty())
    WithColor(OS, HighlightColor::Attribute) << attrString;
  else
    WithColor(OS, HighlightColor::Attribute).get()
        << format("DW_AT_Unknown_%x", Attr);

  if (DumpOpts.Verbose || DumpOpts.ShowForm) {
    auto formString = FormEncodingString(Form);
    if (!formString.empty())
      OS << " [" << formString << ']';
    else
      OS << format(" [DW_FORM_Unknown_%x]", Form);
  }

  DWARFUnit *U = Die.getDwarfUnit();
  DWARFFormValue formValue(Form);

  if (!formValue.extractValue(U->getDebugInfoExtractor(), OffsetPtr,
                              U->getFormParams(), U))
    return;

  OS << "\t(";

  StringRef Name;
  std::string File;
  auto Color = HighlightColor::Enumerator;
  if (Attr == DW_AT_decl_file || Attr == DW_AT_call_file) {
    Color = HighlightColor::String;
    if (const auto *LT = U->getContext().getLineTableForUnit(U))
      if (LT->getFileNameByIndex(
              formValue.getAsUnsignedConstant().getValue(),
              U->getCompilationDir(),
              DILineInfoSpecifier::FileLineInfoKind::AbsoluteFilePath, File)) {
        File = '"' + File + '"';
        Name = File;
      }
  } else if (Optional<uint64_t> Val = formValue.getAsUnsignedConstant())
    Name = AttributeValueString(Attr, *Val);

  if (!Name.empty())
    WithColor(OS, Color) << Name;
  else if (Attr == DW_AT_decl_line || Attr == DW_AT_call_line)
    OS << *formValue.getAsUnsignedConstant();
  else if (Attr == DW_AT_high_pc && !DumpOpts.ShowForm && !DumpOpts.Verbose &&
           formValue.getAsUnsignedConstant()) {
    if (DumpOpts.ShowAddresses) {
      // Print the actual address rather than the offset.
      uint64_t LowPC, HighPC, Index;
      if (Die.getLowAndHighPC(LowPC, HighPC, Index))
        OS << format("0x%016" PRIx64, HighPC);
      else
        formValue.dump(OS, DumpOpts);
    }
  } else if (Attr == DW_AT_location || Attr == DW_AT_frame_base ||
             Attr == DW_AT_data_member_location ||
             Attr == DW_AT_GNU_call_site_value)
    dumpLocation(OS, formValue, U, sizeof(BaseIndent) + Indent + 4, DumpOpts);
  else
    formValue.dump(OS, DumpOpts);

  // We have dumped the attribute raw value. For some attributes
  // having both the raw value and the pretty-printed value is
  // interesting. These attributes are handled below.
  if (Attr == DW_AT_specification || Attr == DW_AT_abstract_origin) {
    if (const char *Name = Die.getAttributeValueAsReferencedDie(Attr).getName(
            DINameKind::LinkageName))
      OS << " \"" << Name << '\"';
  } else if (Attr == DW_AT_type) {
    OS << " \"";
    dumpTypeName(OS, Die);
    OS << '"';
  } else if (Attr == DW_AT_APPLE_property_attribute) {
    if (Optional<uint64_t> OptVal = formValue.getAsUnsignedConstant())
      dumpApplePropertyAttribute(OS, *OptVal);
  } else if (Attr == DW_AT_ranges) {
    const DWARFObject &Obj = Die.getDwarfUnit()->getContext().getDWARFObj();
    dumpRanges(Obj, OS, Die.getAddressRanges(), U->getAddressByteSize(),
               sizeof(BaseIndent) + Indent + 4, DumpOpts);
  }

  OS << ")\n";
}
开发者ID:franchiotta，项目名称:llvm，代码行数:92，代码来源:DWARFDie.cpp


注：本文中的DWARFUnit::getContext方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。