powerpc/sys/getcontext.S

1.1.2.1  briggs /*	$NetBSD: getcontext.S,v 1.1.2.1 2001/11/09 20:15:25 briggs Exp $	*/
1.1.2.1  briggs
1.1.2.1  briggs /*-
1.1.2.1  briggs  * Copyright (c) 2001 The NetBSD Foundation, Inc.
1.1.2.1  briggs  * All rights reserved.
1.1.2.1  briggs  *
1.1.2.1  briggs  * This code is derived from software contributed to The NetBSD Foundation
1.1.2.1  briggs  * by Klaus Klein.
1.1.2.1  briggs  *
1.1.2.1  briggs  * Redistribution and use in source and binary forms, with or without
1.1.2.1  briggs  * modification, are permitted provided that the following conditions
1.1.2.1  briggs  * are met:
1.1.2.1  briggs  * 1. Redistributions of source code must retain the above copyright
1.1.2.1  briggs  *    notice, this list of conditions and the following disclaimer.
1.1.2.1  briggs  * 2. Redistributions in binary form must reproduce the above copyright
1.1.2.1  briggs  *    notice, this list of conditions and the following disclaimer in the
1.1.2.1  briggs  *    documentation and/or other materials provided with the distribution.
1.1.2.1  briggs  * 3. All advertising materials mentioning features or use of this software
1.1.2.1  briggs  *    must display the following acknowledgement:
1.1.2.1  briggs  *        This product includes software developed by the NetBSD
1.1.2.1  briggs  *        Foundation, Inc. and its contributors.
1.1.2.1  briggs  * 4. Neither the name of The NetBSD Foundation nor the names of its
1.1.2.1  briggs  *    contributors may be used to endorse or promote products derived
1.1.2.1  briggs  *    from this software without specific prior written permission.
1.1.2.1  briggs  *
1.1.2.1  briggs  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
1.1.2.1  briggs  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
1.1.2.1  briggs  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
1.1.2.1  briggs  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
1.1.2.1  briggs  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
1.1.2.1  briggs  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
1.1.2.1  briggs  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
1.1.2.1  briggs  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
1.1.2.1  briggs  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
1.1.2.1  briggs  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1.1.2.1  briggs  * POSSIBILITY OF SUCH DAMAGE.
1.1.2.1  briggs  */
1.1.2.1  briggs
1.1.2.1  briggs #include "SYS.h"
1.1.2.1  briggs
1.1.2.1  briggs #if defined(SYSLIBC_SCCS) && !defined(lint)
1.1.2.1  briggs 	.text
1.1.2.1  briggs 	.asciz "$NetBSD: getcontext.S,v 1.1.2.1 2001/11/09 20:15:25 briggs Exp $"
1.1.2.1  briggs #endif /* SYSLIBC_SCCS && !lint */
1.1.2.1  briggs
1.1.2.1  briggs #ifdef WEAK_ALIAS
1.1.2.1  briggs WEAK_ALIAS(getcontext, _getcontext)
1.1.2.1  briggs #endif
1.1.2.1  briggs
1.1.2.1  briggs ENTRY(_getcontext)
1.1.2.1  briggs 	mr	5, 3				# must save pointer
1.1.2.1  briggs 	li	0, SYS_getcontext
1.1.2.1  briggs 	sc
1.1.2.1  briggs 	bso	1f
1.1.2.1  briggs 	mflr	4
1.1.2.1  briggs 	stw	4, (48 + 34 * 4)(5)		# saved pc <- lr
1.1.2.1  briggs 	stw	3, (48 +  3 * 4)(5)		# arrange for return value 0
1.1.2.1  briggs 	blr
1.1.2.1  briggs 1:
1.1.2.1  briggs 	b	PIC_PLT(_C_LABEL(__cerror))