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 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#if defined(LIBC_SCCS) && !defined(lint)
34 .asciz "@(#)_setjmp.s 5.1 (Berkeley) 4/23/90"
35#endif /* LIBC_SCCS and not lint */
36#include <machine/asm.h>
| 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 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#if defined(LIBC_SCCS) && !defined(lint)
34 .asciz "@(#)_setjmp.s 5.1 (Berkeley) 4/23/90"
35#endif /* LIBC_SCCS and not lint */
36#include <machine/asm.h>
|
37__FBSDID("$FreeBSD: head/lib/libc/amd64/gen/_setjmp.S 180080 2008-06-28 17:55:43Z das $");
| 37__FBSDID("$FreeBSD: head/lib/libc/amd64/gen/_setjmp.S 184547 2008-11-02 01:10:54Z peter $");
|
38
39/*
40 * C library -- _setjmp, _longjmp
41 *
42 * _longjmp(a,v)
43 * will generate a "return(v)" from the last call to
44 * _setjmp(a)
45 * by restoring registers from the environment 'a'.
46 * The previous signal state is NOT restored.
47 */
48
49ENTRY(_setjmp)
50 movq %rdi,%rax
51 movq 0(%rsp),%rdx /* retval */
52 movq %rdx, 0(%rax) /* 0; retval */
53 movq %rbx, 8(%rax) /* 1; rbx */
54 movq %rsp,16(%rax) /* 2; rsp */
55 movq %rbp,24(%rax) /* 3; rbp */
56 movq %r12,32(%rax) /* 4; r12 */
57 movq %r13,40(%rax) /* 5; r13 */
58 movq %r14,48(%rax) /* 6; r14 */
59 movq %r15,56(%rax) /* 7; r15 */
60 fnstcw 64(%rax) /* 8; fpu cw */
61 stmxcsr 68(%rax) /* and mxcsr */
62 xorq %rax,%rax
63 ret
| 38
39/*
40 * C library -- _setjmp, _longjmp
41 *
42 * _longjmp(a,v)
43 * will generate a "return(v)" from the last call to
44 * _setjmp(a)
45 * by restoring registers from the environment 'a'.
46 * The previous signal state is NOT restored.
47 */
48
49ENTRY(_setjmp)
50 movq %rdi,%rax
51 movq 0(%rsp),%rdx /* retval */
52 movq %rdx, 0(%rax) /* 0; retval */
53 movq %rbx, 8(%rax) /* 1; rbx */
54 movq %rsp,16(%rax) /* 2; rsp */
55 movq %rbp,24(%rax) /* 3; rbp */
56 movq %r12,32(%rax) /* 4; r12 */
57 movq %r13,40(%rax) /* 5; r13 */
58 movq %r14,48(%rax) /* 6; r14 */
59 movq %r15,56(%rax) /* 7; r15 */
60 fnstcw 64(%rax) /* 8; fpu cw */
61 stmxcsr 68(%rax) /* and mxcsr */
62 xorq %rax,%rax
63 ret
|
| 64END(_setjmp)
|
64
65 .weak CNAME(_longjmp)
66 .set CNAME(_longjmp),CNAME(___longjmp)
67ENTRY(___longjmp)
68 movq %rdi,%rdx
69 /* Restore the mxcsr, but leave exception flags intact. */
70 stmxcsr -4(%rsp)
71 movl 68(%rdx),%eax
72 andl $0xffffffc0,%eax
73 movl -4(%rsp),%edi
74 andl $0x3f,%edi
75 xorl %eax,%edi
76 movl %edi,-4(%rsp)
77 ldmxcsr -4(%rsp)
78 movq %rsi,%rax /* retval */
79 movq 0(%rdx),%rcx
80 movq 8(%rdx),%rbx
81 movq 16(%rdx),%rsp
82 movq 24(%rdx),%rbp
83 movq 32(%rdx),%r12
84 movq 40(%rdx),%r13
85 movq 48(%rdx),%r14
86 movq 56(%rdx),%r15
87 fldcw 64(%rdx)
88 testq %rax,%rax
89 jnz 1f
90 incq %rax
911: movq %rcx,0(%rsp)
92 ret
| 65
66 .weak CNAME(_longjmp)
67 .set CNAME(_longjmp),CNAME(___longjmp)
68ENTRY(___longjmp)
69 movq %rdi,%rdx
70 /* Restore the mxcsr, but leave exception flags intact. */
71 stmxcsr -4(%rsp)
72 movl 68(%rdx),%eax
73 andl $0xffffffc0,%eax
74 movl -4(%rsp),%edi
75 andl $0x3f,%edi
76 xorl %eax,%edi
77 movl %edi,-4(%rsp)
78 ldmxcsr -4(%rsp)
79 movq %rsi,%rax /* retval */
80 movq 0(%rdx),%rcx
81 movq 8(%rdx),%rbx
82 movq 16(%rdx),%rsp
83 movq 24(%rdx),%rbp
84 movq 32(%rdx),%r12
85 movq 40(%rdx),%r13
86 movq 48(%rdx),%r14
87 movq 56(%rdx),%r15
88 fldcw 64(%rdx)
89 testq %rax,%rax
90 jnz 1f
91 incq %rax
921: movq %rcx,0(%rsp)
93 ret
|
| 94END(___longjmp)
|
| |