1995-12-14 01:17:46 +03:00
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/* $NetBSD: sigprocmask.S,v 1.4 1995/12/13 22:18:14 thorpej Exp $ */
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1993-11-26 02:39:23 +03:00
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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1995-12-14 01:17:46 +03:00
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#include "SYS.h"
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1993-11-26 02:39:23 +03:00
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#if defined(LIBC_SCCS) && !defined(lint)
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1995-12-14 01:17:46 +03:00
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#if 0
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RCSID("from: @(#)sigprocmask.s 5.2 (Berkeley) 6/6/90")
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#else
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RCSID("$NetBSD: sigprocmask.S,v 1.4 1995/12/13 22:18:14 thorpej Exp $")
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#endif
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1993-11-26 02:39:23 +03:00
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#endif /* LIBC_SCCS and not lint */
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ENTRY(sigprocmask)
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tstl sp@(8) /* check new sigset pointer */
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jne gotptr /* if not null, indirect */
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/* movl #0,sp@(8) /* null mask pointer: block empty set */
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movl #1,sp@(4) /* SIG_BLOCK */
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jra doit
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gotptr:
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movl sp@(8),a0
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movl a0@,sp@(8) /* indirect to new mask arg */
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doit:
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movl #SYS_sigprocmask,d0
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trap #0
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jcs err
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tstl sp@(12) /* test if old mask requested */
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jeq out
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movl sp@(12),a0
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movl d0,a0@ /* store old mask */
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out:
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clrl d0
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rts
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1994-01-27 17:45:52 +03:00
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err:
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jra cerror
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