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C++ DWARFUnit::dies方法代码示例

本文整理汇总了C++中DWARFUnit::dies方法的典型用法代码示例。如果您正苦于以下问题:C++ DWARFUnit::dies方法的具体用法?C++ DWARFUnit::dies怎么用?C++ DWARFUnit::dies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DWARFUnit的用法示例。


在下文中一共展示了DWARFUnit::dies方法的1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: IndexUnitImpl

void ManualDWARFIndex::IndexUnitImpl(
    DWARFUnit &unit, const LanguageType cu_language,
    const DWARFFormValue::FixedFormSizes &fixed_form_sizes,
    const dw_offset_t cu_offset, IndexSet &set) {
  for (const DWARFDebugInfoEntry &die : unit.dies()) {
    const dw_tag_t tag = die.Tag();

    switch (tag) {
    case DW_TAG_array_type:
    case DW_TAG_base_type:
    case DW_TAG_class_type:
    case DW_TAG_constant:
    case DW_TAG_enumeration_type:
    case DW_TAG_inlined_subroutine:
    case DW_TAG_namespace:
    case DW_TAG_string_type:
    case DW_TAG_structure_type:
    case DW_TAG_subprogram:
    case DW_TAG_subroutine_type:
    case DW_TAG_typedef:
    case DW_TAG_union_type:
    case DW_TAG_unspecified_type:
    case DW_TAG_variable:
      break;

    default:
      continue;
    }

    DWARFAttributes attributes;
    const char *name = NULL;
    const char *mangled_cstr = NULL;
    bool is_declaration = false;
    // bool is_artificial = false;
    bool has_address = false;
    bool has_location_or_const_value = false;
    bool is_global_or_static_variable = false;

    DWARFFormValue specification_die_form;
    const size_t num_attributes =
        die.GetAttributes(&unit, fixed_form_sizes, attributes);
    if (num_attributes > 0) {
      for (uint32_t i = 0; i < num_attributes; ++i) {
        dw_attr_t attr = attributes.AttributeAtIndex(i);
        DWARFFormValue form_value;
        switch (attr) {
        case DW_AT_name:
          if (attributes.ExtractFormValueAtIndex(i, form_value))
            name = form_value.AsCString();
          break;

        case DW_AT_declaration:
          if (attributes.ExtractFormValueAtIndex(i, form_value))
            is_declaration = form_value.Unsigned() != 0;
          break;

        //                case DW_AT_artificial:
        //                    if (attributes.ExtractFormValueAtIndex(i,
        //                    form_value))
        //                        is_artificial = form_value.Unsigned() != 0;
        //                    break;

        case DW_AT_MIPS_linkage_name:
        case DW_AT_linkage_name:
          if (attributes.ExtractFormValueAtIndex(i, form_value))
            mangled_cstr = form_value.AsCString();
          break;

        case DW_AT_low_pc:
        case DW_AT_high_pc:
        case DW_AT_ranges:
          has_address = true;
          break;

        case DW_AT_entry_pc:
          has_address = true;
          break;

        case DW_AT_location:
        case DW_AT_const_value:
          has_location_or_const_value = true;
          if (tag == DW_TAG_variable) {
            const DWARFDebugInfoEntry *parent_die = die.GetParent();
            while (parent_die != NULL) {
              switch (parent_die->Tag()) {
              case DW_TAG_subprogram:
              case DW_TAG_lexical_block:
              case DW_TAG_inlined_subroutine:
                // Even if this is a function level static, we don't add it. We
                // could theoretically add these if we wanted to by
                // introspecting into the DW_AT_location and seeing if the
                // location describes a hard coded address, but we don't want
                // the performance penalty of that right now.
                is_global_or_static_variable = false;
                // if (attributes.ExtractFormValueAtIndex(dwarf, i,
                //                                        form_value)) {
                //   // If we have valid block data, then we have location
                //   // expression bytesthat are fixed (not a location list).
                //   const uint8_t *block_data = form_value.BlockData();
                //   if (block_data) {
//.........这里部分代码省略.........
开发者ID:llvm-project,项目名称:lldb,代码行数:101,代码来源:ManualDWARFIndex.cpp


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