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/* $NetBSD: sigprocmask.S,v 1.2 1996/10/17 03:08:21 cgd Exp $ */
/*
* Copyright (c) 1994, 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include "SYS.h"
LEAF(sigprocmask, 3)
mov a2, a5 /* safe */
cmoveq a1, 1, a0 /* if set == NULL, how = SIG_BLOCK */
beq a1, Ldoit /* and set = 0, and do it. */
ldl a1, 0(a1) /* load the set from *set */
Ldoit: CALLSYS_ERROR(sigprocmask)
beq a5, Lret /* if they don't want old mask, done */
stl v0, 0(a5) /* otherwise, give it to them. */
Lret: mov zero, v0
RET
END(sigprocmask)
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