is_host_big_endian
if (is_host_big_endian())
btf_ext->swapped_endian = is_host_big_endian() != (endian == BTF_BIG_ENDIAN);
if (is_host_big_endian())
btf->swapped_endian = is_host_big_endian() != (endian == BTF_BIG_ENDIAN);