SIGSETNAND
SIGSETNAND(pending, td->td_sigmask);
SIGSETNAND(tmpset, td->td_sigmask);
SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore);
SIGSETNAND(new_block, oset1);
SIGSETNAND(td->td_sigmask, *set);
SIGSETNAND(new_block, oset1);
SIGSETNAND(td->td_sigmask, waitset);
SIGSETNAND(new_block, td->td_sigmask);
SIGSETNAND(unblocked, td->td_sigmask);
SIGSETNAND(sigpending, td->td_sigmask);
SIGSETNAND(sigpending, fastblock_mask);
SIGSETNAND(src->sq_kill, tmp);
SIGSETNAND(src->sq_ptrace, tmp);
SIGSETNAND(src->sq_signals, tmp);
SIGSETNAND(sq->sq_kill, *set);
SIGSETNAND(sq->sq_ptrace, *set);
SIGSETNAND(sq->sq_signals, *set);
SIGSETNAND(tmpset, td->td_sigmask);
SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore);