setjmp.S revision 99018 
1/*
2 * Copyright (c) 1992, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This software was developed by the Computer Systems Engineering group
6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
7 * contributed to Berkeley.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *	This product includes software developed by the University of
20 *	California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 *    may be used to endorse or promote products derived from this software
23 *    without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 *	from: Header: _setjmp.s,v 1.1 91/07/06 16:45:53 torek Exp
38 */
39
40#if defined(LIBC_SCCS) && !defined(lint)
41	.asciz "@(#)_setjmp.s	8.1 (Berkeley) 6/4/93"
42#if 0
43	RCSID("$NetBSD: _setjmp.S,v 1.4 1998/10/08 02:27:59 eeh Exp $")
44#endif
45#endif /* LIBC_SCCS and not lint */
46#include <machine/asm.h>
47__FBSDID("$FreeBSD: head/lib/libc/sparc64/gen/setjmp.S 99018 2002-06-29 03:23:51Z obrien $");
48
49#include "assym.s"
50
51	.register %g2,#ignore
52	.register %g3,#ignore
53
54/*
55 * C library -- setjmp, longjmp
56 *
57 *	longjmp(a,v)
58 * will generate a "return(v?v:1)" from
59 * the last call to
60 *	setjmp(a)
61 * by restoring the previous context.
62 */
63
64ENTRY(setjmp)
65	save	%sp, -CCFSZ, %sp
66	mov	SIG_BLOCK, %o0
67	clr	%o1
68	call	CNAME(sigprocmask)
69	 add	%i0, _JB_SIGMASK, %o2
70	restore
71	stx	%sp, [%o0 + _JB_SP]
72	stx	%o7, [%o0 + _JB_PC]
73	stx	%fp, [%o0 + _JB_FP]
74	retl
75	 clr	%o0
76END(setjmp)
77
78	.weak	CNAME(longjmp)
79	.set	CNAME(longjmp),CNAME(__longjmp)
80ENTRY(__longjmp)
81	save	%sp, -CCFSZ, %sp
82	mov	SIG_SETMASK, %o0
83	add	%i0, _JB_SIGMASK, %o1
84	call	CNAME(sigprocmask)
85	 clr	%o2
86	restore
87	mov	1, %g1
88	movrnz	%o1, %o1, %g1
89	mov	%o0, %g2
90	ldx	[%g2 + _JB_FP], %g3
911:	cmp	%fp, %g3
92	bl,a	1b
93	 restore
94	be,a	2f
95	 ldx	[%g2 + _JB_SP], %o0
96
97.Lbotch:
98	call	CNAME(longjmperror)
99	 nop
100	call	CNAME(abort)
101	 nop
102	illtrap
103
1042:	cmp	%o0, %sp
105	bge,a	3f
106	 mov	%o0, %sp
107	b,a	.Lbotch
108	 nop
1093:	ldx	[%g2 + _JB_PC], %o7
110	retl
111	 mov	%g1, %o0
112END(__longjmp)
113