xref: /netbsd-src/lib/libc/arch/sh3/gen/_setjmp.S (revision 6170f5973a63258c48e932522cf2e0c0591ec6a9)
1*6170f597Suwe/*	$NetBSD: _setjmp.S,v 1.7 2006/01/05 02:04:41 uwe Exp $	*/
297f4a15fSuwe
397f4a15fSuwe/*-
497f4a15fSuwe * Copyright (c) 1990 The Regents of the University of California.
597f4a15fSuwe * All rights reserved.
697f4a15fSuwe *
797f4a15fSuwe * This code is derived from software contributed to Berkeley by
897f4a15fSuwe * William Jolitz.
997f4a15fSuwe *
1097f4a15fSuwe * Redistribution and use in source and binary forms, with or without
1197f4a15fSuwe * modification, are permitted provided that the following conditions
1297f4a15fSuwe * are met:
1397f4a15fSuwe * 1. Redistributions of source code must retain the above copyright
1497f4a15fSuwe *    notice, this list of conditions and the following disclaimer.
1597f4a15fSuwe * 2. Redistributions in binary form must reproduce the above copyright
1697f4a15fSuwe *    notice, this list of conditions and the following disclaimer in the
1797f4a15fSuwe *    documentation and/or other materials provided with the distribution.
1897f4a15fSuwe * 3. Neither the name of the University nor the names of its contributors
1997f4a15fSuwe *    may be used to endorse or promote products derived from this software
2097f4a15fSuwe *    without specific prior written permission.
2197f4a15fSuwe *
2297f4a15fSuwe * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
2397f4a15fSuwe * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
2497f4a15fSuwe * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
2597f4a15fSuwe * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
2697f4a15fSuwe * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
2797f4a15fSuwe * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2897f4a15fSuwe * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2997f4a15fSuwe * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
3097f4a15fSuwe * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
3197f4a15fSuwe * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
3297f4a15fSuwe * SUCH DAMAGE.
3397f4a15fSuwe *
3497f4a15fSuwe *	from: @(#)_setjmp.s	5.1 (Berkeley) 4/23/90
3597f4a15fSuwe */
3697f4a15fSuwe
3797f4a15fSuwe#include <machine/asm.h>
38932cacd2Suwe#include <machine/setjmp.h>
39932cacd2Suwe
4097f4a15fSuwe#if defined(LIBC_SCCS)
41*6170f597Suwe	RCSID("$NetBSD: _setjmp.S,v 1.7 2006/01/05 02:04:41 uwe Exp $")
4297f4a15fSuwe#endif
4397f4a15fSuwe
4497f4a15fSuwe/*
4597f4a15fSuwe * C library -- _setjmp, _longjmp
4697f4a15fSuwe *
4797f4a15fSuwe *	_longjmp(a,v)
4897f4a15fSuwe * will generate a "return(v)" from the last call to
4997f4a15fSuwe *	_setjmp(a)
5097f4a15fSuwe * by restoring registers from the stack.
5197f4a15fSuwe * The previous signal state is NOT restored.
5297f4a15fSuwe */
5397f4a15fSuwe
5497f4a15fSuweENTRY(_setjmp)
55932cacd2Suwe	add	#((_JB_HAS_MASK + 1) * 4), r4
5697f4a15fSuwe	mov	#0, r0
57932cacd2Suwe	mov.l	r0, @-r4		/* no saved signal mask */
5897f4a15fSuwe	mov.l	r15, @-r4
5997f4a15fSuwe	mov.l	r14, @-r4
6097f4a15fSuwe	mov.l	r13, @-r4
6197f4a15fSuwe	mov.l	r12, @-r4
6297f4a15fSuwe	mov.l	r11, @-r4
6397f4a15fSuwe	mov.l	r10, @-r4
6497f4a15fSuwe	mov.l	r9, @-r4
6597f4a15fSuwe	mov.l	r8, @-r4
6697f4a15fSuwe	sts.l	pr, @-r4
6797f4a15fSuwe	rts
6897f4a15fSuwe	 xor	r0, r0
69*6170f597Suwe	SET_ENTRY_SIZE(_setjmp)
7097f4a15fSuwe
7197f4a15fSuweENTRY(_longjmp)
7297f4a15fSuwe	lds.l	@r4+, pr
7397f4a15fSuwe	mov.l	@r4+, r8
7497f4a15fSuwe	mov.l	@r4+, r9
7597f4a15fSuwe	mov.l	@r4+, r10
7697f4a15fSuwe	mov.l	@r4+, r11
7797f4a15fSuwe	mov.l	@r4+, r12
7897f4a15fSuwe	mov.l	@r4+, r13
7997f4a15fSuwe	mov.l	@r4+, r14
8097f4a15fSuwe	mov.l	@r4+, r15
8197f4a15fSuwe
8297f4a15fSuwe	mov	r5, r0
8397f4a15fSuwe	tst	r0, r0
8497f4a15fSuwe	bf	.L0
8597f4a15fSuwe	add	#1, r0
8697f4a15fSuwe.L0:
8797f4a15fSuwe	rts
8897f4a15fSuwe	 nop
89*6170f597Suwe	SET_ENTRY_SIZE(_longjmp)
90