1/* $OpenBSD: sigprocmask.S,v 1.12 2016/05/15 00:15:10 guenther Exp $ */ 2 3/* 4 * Copyright (c) 1996 Dale Rahn 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28/* sigprocmask(int how, const sigset_t *set, sigset_t *oset); */ 29 30#include "SYS.h" 31 32 .text 33PREFIX_HIDDEN(sigprocmask) 34 stwu 1, -16(1) 35 stw 5, 12(1) 36 37 /* check set (new mask value) for null, in which case 38 fiddle arguments */ 39 cmpwi 4, 0 40 bne+ .L_load_set 41 addi 3, 0, 1 /* how = SIG_BLOCK, new mask already 0 */ 42 b .L_do_call 43.L_load_set: 44 lwz 4, 0(4) /* get new mask */ 45.L_do_call: 46 47 sc 48 49 /* didnt work? */ 50 cmpwi 0, 0 51 beq+ .L_sigprocmask_ok 52 stw 0, R2_OFFSET_ERRNO(2) 53 li 3, -1 54 blr 55 56.L_sigprocmask_ok: 57 lwz 5, 12(1) 58 cmpwi 5, 0 59 beq+ .L_sigprocmask_done 60 stw 3, 0(5) 61.L_sigprocmask_done: 62 li 3, 0 63 addi 1, 1, 16 64 blr 65SYSCALL_END_HIDDEN(sigprocmask) 66