1/* $OpenBSD: sigprocmask.S,v 1.6 2022/09/02 06:19:04 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_HIDDEN(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: 50#if SYS_sigprocmask >= 128 51 mov.l LSYS_sigprocmask, r0 52#else 53 mov #SYS_sigprocmask, r0 54#endif 55 trapa #0x80 56 bf 4f 57 mov r6, r2 /* fetch old mask requested */ 58 tst r2, r2 /* test if old mask requested */ 59 bt 3f 60 mov.l r0, @r2 /* store old mask */ 613: 62 xor r0, r0 63 rts 64 nop 654: 66 SET_ERRNO_AND_RETURN 67 68 .align 2 69#if SYS_sigprocmask >= 128 70LSYS_sigprocmask: 71 .long SYS_sigprocmask 72#endif 73SYSCALL_END_HIDDEN(sigprocmask) 74