1/* $OpenBSD: sigprocmask.S,v 1.1.1.1 2006/10/10 22:07:10 miod Exp $ */ 2/* $NetBSD: sigprocmask.S,v 1.6 2003/08/07 16:42:21 agc Exp $ */ 3 4/*- 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: @(#)sigprocmask.s 5.2 (Berkeley) 12/17/90 36 */ 37 38#include "SYS.h" 39 40SYSENTRY(sigprocmask) 41 mov r5, r2 /* fetch new sigset pointer */ 42 tst r2, r2 /* check new sigset pointer */ 43 bf 1f /* if not null, indirect */ 44 mov #1, r4 /* SIG_BLOCK */ 45 bra 2f 46 nop 471: mov.l @r2, r2 /* fetch indirect ... */ 48 mov r2, r5 /* to new mask arg */ 492: mov.l LSYS_sigprocmask, r0 50 trapa #0x80 51 bf err 52 mov r6, r2 /* fetch old mask requested */ 53 tst r2, r2 /* test if old mask requested */ 54 bt out 55 mov.l r0, @r2 /* store old mask */ 56out: 57 xor r0, r0 58 rts 59 nop 60err: 61 JUMP_CERROR 62 63 .align 2 64LSYS_sigprocmask: 65 .long SYS_sigprocmask 66