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      1 /*	$NetBSD: compat_sigprocmask.S,v 1.3 2014/05/23 02:34:33 uebayasi Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1990 The Regents of the University of California.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * William Jolitz.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *	from: @(#)sigprocmask.s	5.2 (Berkeley) 12/17/90
     35  */
     36 
     37 #include <machine/asm.h>
     38 #if defined(SYSLIBC_SCCS) && !defined(lint)
     39 	RCSID("$NetBSD: compat_sigprocmask.S,v 1.3 2014/05/23 02:34:33 uebayasi Exp $")
     40 #endif /* SYSLIBC_SCCS and not lint */
     41 
     42 #include "SYS.h"
     43 
     44 WARN_REFERENCES(sigprocmask, \
     45     "warning: reference to compatibility sigprocmask(); include <signal.h> for correct reference")
     46 
     47 ENTRY(sigprocmask)
     48 	movl	8(%esp),%ecx		# fetch new sigset pointer
     49 	testl	%ecx,%ecx		# check new sigset pointer
     50 	jnz	1f			# if not null, indirect
     51 /*	movl	$0,8(%esp)		# null mask pointer: block empty set */
     52 	movl	$1,4(%esp)		# SIG_BLOCK
     53 	jmp	2f
     54 1:	movl	(%ecx),%ecx		# fetch indirect  ...
     55 	movl	%ecx,8(%esp)		# to new mask arg
     56 2:	SYSTRAP(compat_13_sigprocmask13)
     57 	jc	err
     58 	movl	12(%esp),%ecx		# fetch old mask requested
     59 	testl	%ecx,%ecx		# test if old mask requested
     60 	jz	out
     61 	movl	%eax,(%ecx)		# store old mask
     62 out:
     63 	xorl	%eax,%eax
     64 	ret
     65 err:
     66 #ifdef __PIC__
     67 	PIC_PROLOGUE
     68 	mov	PIC_GOT(CERROR), %ecx
     69 	PIC_EPILOGUE
     70 	jmp	*%ecx
     71 #else
     72 	jmp	CERROR
     73 #endif
     74 END(sigprocmask)
     75