1/* $OpenBSD: sigprocmask.S,v 1.4 2015/10/23 04:39:25 guenther Exp $ */ 2/* 3 * Copyright (c) 1992, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This software was developed by the Computer Systems Engineering group 7 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 8 * contributed to Berkeley. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <machine/asm.h> 36 37#include "SYS.h" 38 39/* 40 * sigprocmask(int how, sigset_t *set, sigset_t *oset) 41 */ 42SYSENTRY_HIDDEN(sigprocmask) 43 brnz,a %o1, 1f /* if (set != NULL) */ 44 ld [%o1], %o1 /* replace it in %o1 with *set */ 45/* clr %o1 * else block no signals ... */ 46 mov 1, %o0 /* ... using sigprocmask(SIG_BLOCK) */ 471: 48 mov SYS_sigprocmask, %g1 49 t ST_SYSCALL 50 bcc 2f /* if success, */ 51 tst %o2 /* check to see if oset requested */ 52 ERROR() 532: 54 bne,a 3f /* if oset != NULL, */ 55 st %o0, [%o2] /* *oset = oldmask */ 563: 57 retl /* in any case, return 0 */ 58 clr %o0 59SYSCALL_END_HIDDEN(sigprocmask) 60