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/* $OpenBSD: sigprocmask.S,v 1.10 2023/01/11 01:55:17 mortimer Exp $ */
/* $NetBSD: sigprocmask.S,v 1.1 2001/06/19 00:25:06 fvdl Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)sigprocmask.s 5.2 (Berkeley) 12/17/90
*/
#include <machine/asm.h>
#include "SYS.h"
SYSENTRY_HIDDEN(sigprocmask)
RETGUARD_SETUP(_thread_sys_sigprocmask, r11);
RETGUARD_PUSH(r11);
testq %rsi,%rsi # check new sigset pointer
jnz 1f # if not null, indirect
movl $1,%edi # SIG_BLOCK
jmp 2f
1: movl (%rsi),%esi # fetch indirect ...
2: SYSTRAP(sigprocmask)
jc 1f
testq %rdx,%rdx # test if old mask requested
jz 3f
movl %eax,(%rdx) # store old mask
3:
xorl %eax,%eax
jmp 2f
1:
SET_ERRNO
2:
RETGUARD_POP(r11);
RETGUARD_CHECK(_thread_sys_sigprocmask, r11);
ret
SYSCALL_END_HIDDEN(sigprocmask)
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