1993-03-21 12:45:37 +03:00
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY 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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#if defined(SYSLIBC_SCCS) && !defined(lint)
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1993-08-26 06:11:52 +04:00
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.text
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1993-08-01 21:54:45 +04:00
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/*.asciz "from: @(#)sigprocmask.s 5.2 (Berkeley) 12/17/90"*/
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1993-08-26 06:11:52 +04:00
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.asciz "$Id: sigprocmask.s,v 1.5 1993/08/26 02:14:20 mycroft Exp $"
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1993-03-21 12:45:37 +03:00
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#endif /* SYSLIBC_SCCS and not lint */
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#include "SYS.h"
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err:
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jmp cerror
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ENTRY(sigprocmask)
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movl 8(%esp),%ecx # fetch new sigset pointer
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cmpl $0,%ecx # check new sigset pointer
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jne 1f # if not null, indirect
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/* movl $0,8(%esp) # null mask pointer: block empty set */
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movl $1,4(%esp) # SIG_BLOCK
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jmp 2f
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1: movl (%ecx),%ecx # fetch indirect ...
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movl %ecx,8(%esp) # to new mask arg
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1993-06-17 17:04:04 +04:00
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2: movl $/**/SYS_sigprocmask , %eax
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1993-03-21 12:45:37 +03:00
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LCALL(0x7,0)
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jb err
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movl 12(%esp),%ecx # fetch old mask requested
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cmpl $0,%ecx # test if old mask requested
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je out
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movl %eax,(%ecx) # store old mask
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out:
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xorl %eax,%eax
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ret
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