2023-12-10 13:25:40 +00:00
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/* $OpenBSD: sigprocmask.S,v 1.15 2023/12/10 16:45:51 deraadt Exp $ */
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2023-04-30 01:15:27 +00:00
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/*
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* Copyright (c) 1996 Dale Rahn
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* sigprocmask(int how, const sigset_t *set, sigset_t *oset); */
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#include "SYS.h"
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.text
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SYSENTRY_HIDDEN(sigprocmask)
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RETGUARD_SETUP(sigprocmask, %r11, %r12)
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stwu 1, -16(1)
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stw 5, 12(1)
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/* check set (new mask value) for null, in which case
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fiddle arguments */
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cmpwi 4, 0
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bne+ .L_load_set
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addi 3, 0, 1 /* how = SIG_BLOCK, new mask already 0 */
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b .L_do_call
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.L_load_set:
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lwz 4, 0(4) /* get new mask */
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.L_do_call:
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li 0, SYS_sigprocmask
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2023-12-10 13:25:40 +00:00
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99: sc
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PINSYSCALL(SYS_sigprocmask, 99b)
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2023-04-30 01:15:27 +00:00
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/* didnt work? */
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cmpwi 0, 0
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beq+ .L_sigprocmask_ok
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stw 0, R2_OFFSET_ERRNO(2)
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li 3, -1
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b .L_end
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.L_sigprocmask_ok:
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lwz 5, 12(1)
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cmpwi 5, 0
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beq+ .L_sigprocmask_done
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stw 3, 0(5)
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.L_sigprocmask_done:
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li 3, 0
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addi 1, 1, 16
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.L_end:
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RETGUARD_CHECK(sigprocmask, %r11, %r12)
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blr
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SYSCALL_END_HIDDEN(sigprocmask)
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