/ C library -- signal/ signal(n, 0); /* default action on signal(n) *// signal(n, odd); /* ignore signal(n) *// signal(n, label); /* goto label on signal(n) *// returns old label, only one level.rtt	= 6.signal	= 48..globl	_signal, cerror_signal:	mov	r5,-(sp)	mov	sp,r5	mov	4(r5),r1	cmp	r1,$NSIG	bhis	2f	mov	6(r5),r0	mov	r1,0f	asl	r1	mov	dvect(r1),-(sp)	mov	r0,dvect(r1)	mov	r0,0f+2	beq	1f	bit	$1,r0	bne	1f	asl	r1	add	$tvect,r1	mov	r1,0f+21:	sys	0; 9f	bes	3f	bit	$1,r0	beq	1f	mov	r0,(sp)1:	mov	(sp)+,r0	mov	(sp)+,r5	rts	pc2:	mov	$22.,r0		/ EINVAL3:	jmp	cerrorNSIG = 0tvect:	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+1	jsr	r0,1f; NSIG=NSIG+11:	mov	r1,-(sp)	mov	r2,-(sp)	mov	r3,-(sp)	mov	r4,-(sp)	sub	$tvect+4,r0	asr	r0	mov	r0,-(sp)	asr	(sp)	jsr	pc,*dvect(r0)	tst	(sp)+	mov	(sp)+,r4	mov	(sp)+,r3	mov	(sp)+,r2	mov	(sp)+,r1	mov	(sp)+,r0	rtt.data9:	sys	.signal; 0:..; ...bssdvect:	.=.+[NSIG*2]