: : "i"(offsetof(gd_t, jt)), "i"(XF_ ## x * sizeof(void *)) : "r1");
#else
#error stubs definition missing for this architecture
: : "i"(offsetof(gd_t, jt)), "i"(XF_ ## x * sizeof(void *)) : "r1");
#else
#error stubs definition missing for this architecture