1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * $FreeBSD: head/lib/libc/amd64/gen/_setjmp.S 51794 1999-09-29 15:18:46Z marcel $
37 */
38
39#if defined(LIBC_RCS) && !defined(lint)
40 .text
41 .asciz "$FreeBSD: head/lib/libc/amd64/gen/_setjmp.S 51794 1999-09-29 15:18:46Z marcel $"
42#endif /* LIBC_RCS and not lint */
43
44/*
45 * C library -- _setjmp, _longjmp
46 *
47 * _longjmp(a,v)
48 * will generate a "return(v)" from the last call to
49 * _setjmp(a)
50 * by restoring registers from the environment 'a'.
51 * The previous signal state is NOT restored.
52 */
53
54#include "DEFS.h"
55
56ENTRY(_setjmp)
57 movl 4(%esp),%eax
58 movl 0(%esp),%edx
59 movl %edx, 0(%eax) /* rta */
60 movl %ebx, 4(%eax)
61 movl %esp, 8(%eax)
62 movl %ebp,12(%eax)
63 movl %esi,16(%eax)
64 movl %edi,20(%eax)
65 fnstcw 24(%eax)
66 xorl %eax,%eax
67 ret
68
69ENTRY(_longjmp)
70 movl 4(%esp),%edx
71 movl 8(%esp),%eax
72 movl 0(%edx),%ecx
73 movl 4(%edx),%ebx
74 movl 8(%edx),%esp
75 movl 12(%edx),%ebp
76 movl 16(%edx),%esi
77 movl 20(%edx),%edi
78 fninit
79 fldcw 24(%edx)
80 testl %eax,%eax
81 jnz 1f
82 incl %eax
831: movl %ecx,0(%esp)
84 ret
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * $FreeBSD: head/lib/libc/amd64/gen/_setjmp.S 51794 1999-09-29 15:18:46Z marcel $
37 */
38
39#if defined(LIBC_RCS) && !defined(lint)
40 .text
41 .asciz "$FreeBSD: head/lib/libc/amd64/gen/_setjmp.S 51794 1999-09-29 15:18:46Z marcel $"
42#endif /* LIBC_RCS and not lint */
43
44/*
45 * C library -- _setjmp, _longjmp
46 *
47 * _longjmp(a,v)
48 * will generate a "return(v)" from the last call to
49 * _setjmp(a)
50 * by restoring registers from the environment 'a'.
51 * The previous signal state is NOT restored.
52 */
53
54#include "DEFS.h"
55
56ENTRY(_setjmp)
57 movl 4(%esp),%eax
58 movl 0(%esp),%edx
59 movl %edx, 0(%eax) /* rta */
60 movl %ebx, 4(%eax)
61 movl %esp, 8(%eax)
62 movl %ebp,12(%eax)
63 movl %esi,16(%eax)
64 movl %edi,20(%eax)
65 fnstcw 24(%eax)
66 xorl %eax,%eax
67 ret
68
69ENTRY(_longjmp)
70 movl 4(%esp),%edx
71 movl 8(%esp),%eax
72 movl 0(%edx),%ecx
73 movl 4(%edx),%ebx
74 movl 8(%edx),%esp
75 movl 12(%edx),%ebp
76 movl 16(%edx),%esi
77 movl 20(%edx),%edi
78 fninit
79 fldcw 24(%edx)
80 testl %eax,%eax
81 jnz 1f
82 incl %eax
831: movl %ecx,0(%esp)
84 ret