Пример #1
0
uint32_t
DWARFDebugInfoEntryMinimal::getAttributeValue(const DWARFCompileUnit *cu,
                                              const uint16_t attr,
                                              DWARFFormValue &form_value,
                                              uint32_t *end_attr_offset_ptr)
                                              const {
  if (AbbrevDecl) {
    uint32_t attr_idx = AbbrevDecl->findAttributeIndex(attr);

    if (attr_idx != -1U) {
      uint32_t offset = getOffset();

      DataExtractor debug_info_data = cu->getDebugInfoExtractor();

      // Skip the abbreviation code so we are at the data for the attributes
      debug_info_data.getULEB128(&offset);

      uint32_t idx = 0;
      while (idx < attr_idx)
        DWARFFormValue::skipValue(AbbrevDecl->getFormByIndex(idx++),
                                  debug_info_data, &offset, cu);

      const uint32_t attr_offset = offset;
      form_value = DWARFFormValue(AbbrevDecl->getFormByIndex(idx));
      if (form_value.extractValue(debug_info_data, &offset, cu)) {
        if (end_attr_offset_ptr)
          *end_attr_offset_ptr = offset;
        return attr_offset;
      }
    }
  }

  return 0;
}
Пример #2
0
bool DWARFDebugInfoEntryMinimal::getAttributeValue(
    const DWARFUnit *U, const uint16_t Attr, DWARFFormValue &FormValue) const {
  if (!AbbrevDecl)
    return false;

  uint32_t AttrIdx = AbbrevDecl->findAttributeIndex(Attr);
  if (AttrIdx == -1U)
    return false;

  DataExtractor DebugInfoData = U->getDebugInfoExtractor();
  uint32_t DebugInfoOffset = getOffset();

  // Skip the abbreviation code so we are at the data for the attributes
  DebugInfoData.getULEB128(&DebugInfoOffset);

  // Skip preceding attribute values.
  for (uint32_t i = 0; i < AttrIdx; ++i) {
    DWARFFormValue::skipValue(AbbrevDecl->getFormByIndex(i),
                              DebugInfoData, &DebugInfoOffset, U);
  }

  FormValue = DWARFFormValue(AbbrevDecl->getFormByIndex(AttrIdx));
  return FormValue.extractValue(DebugInfoData, &DebugInfoOffset, U);
}