suword_lwpid
if (args->tid != NULL && suword_lwpid(args->tid, td->td_tid))
suword_lwpid(param->child_tid, td->td_tid)) ||
suword_lwpid(param->parent_tid, td->td_tid)))
error = suword_lwpid(uap->id, (unsigned)td->td_tid);
(void)suword_lwpid(uap->state, 1);