fillw
#define fillw_io(p, d, c) fillw((p), (void *)(d), (c))
#define fillw_io(p, d, c) fillw((p), (void *)(d), (c))
fillw(attr | c, (void *)sc_vtb_pointer(vtb, 0), vtb->vtb_size);
fillw(attr | c, (void *)sc_vtb_pointer(vtb, at), count);
fillw(attr | c, (void *)sc_vtb_pointer(vtb, at + len),
fillw(attr | c, (void *)sc_vtb_pointer(vtb, at), count);
void fillw(int /*u_short*/ pat, void *base, size_t cnt);