1/*	$NetBSD: _setjmp.S,v 1.6 2004/12/07 08:20:07 martin Exp $	*/
2
3/*
4 * Copyright (c) 1992, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This software was developed by the Computer Systems Engineering group
8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
9 * contributed to Berkeley.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * from: Header: _setjmp.s,v 1.1 91/07/06 16:45:53 torek Exp
36 */
37
38#include <machine/asm.h>
39#if defined(LIBC_SCCS) && !defined(lint)
40#if 0
41	.asciz "@(#)_setjmp.s	8.1 (Berkeley) 6/4/93"
42#else
43	RCSID("$NetBSD: _setjmp.S,v 1.6 2004/12/07 08:20:07 martin Exp $")
44#endif
45#endif /* LIBC_SCCS and not lint */
46
47	.register %g2,#ignore
48	.register %g3,#ignore
49
50/*
51 * C library -- _setjmp, _longjmp
52 *
53 *	_longjmp(a,v)
54 * will generate a "return(v?v:1)" from
55 * the last call to
56 *	_setjmp(a)
57 * The previous signal state is NOT restored.
58 */
59
60ENTRY(_setjmp)
61	stx	%sp, [%o0+0]	/* store caller's stack pointer */
62	stx	%o7, [%o0+8]	/* and return pc */
63	stx	%g0, [%o0+0x18]	/* mark as non-sigmask jmpbuf */
64
65	/* store globals, offsets compatible with siglongjmp */
66	stx	%g1, [%o0+0x28]
67	stx	%g2, [%o0+0x30]		/* adjust asserts in longjmp.c */
68	stx	%g3, [%o0+0x48]		/* if you change any of these */
69	stx	%g6, [%o0+0x50]		/* offsets! */
70	stx	%g7, [%o0+0x58]
71
72	retl
73	 clr	%o0		! return 0
74
75ENTRY(_longjmp)
76	save	%sp, -CC64FSZ, %sp
77	flushw
78	/*
79	 * We restore the saved stack pointer to %fp, then issue
80	 * a `restore' instruction which will reload the register
81	 * window from the stack.
82	 */
83	ldx	[%i0+0x28],%g1
84	ldx	[%i0+0x30],%g2
85	ldx	[%i0+0x48],%g3
86	ldx	[%i0+0x50],%g6
87	ldx	[%i0+0x58],%g7
88	ldx	[%i0+8], %i7
89	ldx	[%i0+0], %fp
90	mov	1, %i0
91	movrnz	%i1, %i1, %i0	! compute v ? v : 1
92	ret
93	 restore
94