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      1 /*
      2  * Copyright (c) 1989, 1993
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. Neither the name of the University nor the names of its contributors
     14  *    may be used to endorse or promote products derived from this software
     15  *    without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  */
     29 
     30 #include "SYS.h"
     31 
     32 #if defined(SYSLIBC_SCCS) && !defined(lint)
     33 	/* .asciz "@(#)sigprocmask.s	8.1 (Berkeley) 6/4/93" */
     34 RCSID("$NetBSD: compat_sigprocmask13.S,v 1.2 2011/01/25 02:38:16 matt Exp $")
     35 #endif /* SYSLIBC_SCCS and not lint */
     36 
     37 WARN_REFERENCES(sigprocmask, \
     38     "warning: reference to compatibility sigprocmask(); include <signal.h> for correct reference")
     39 
     40 ENTRY(sigprocmask, 0)
     41 	tstl	8(%ap)			# check new sigset pointer
     42 	bneq	1f			# if not null, indirect
     43 /*	movl	$0,8(%ap)		# null mask pointer: block empty set */
     44 	movl	$1,4(%ap)		# SIG_BLOCK
     45 	jbr	2f
     46 1:	movl	*8(%ap),8(%ap)		# indirect to new mask arg
     47 2:	chmk	$ SYS_compat_13_sigprocmask13
     48 	jcc	3f
     49 	jmp	CERROR+2
     50 
     51 3:	tstl	12(%ap)			# test if old mask requested
     52 	beql	out
     53 	movl	%r0,*12(%ap)		# store old mask
     54 out:
     55 	clrl	%r0
     56 	ret
     57 END(sigprocmask)
     58