static relocInfo::relocType reloc_for_target(address target) {

        // Sometimes ExternalAddress is used for values which aren't
        // exactly addresses, like the card table base.
        // external_word_type can't be used for values in the first page
        // so just skip the reloc in that case.
        return external_word_Relocation::can_be_relocated(target) ? relocInfo::external_word_type : relocInfo::none;
      }