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 227023 2011-11-02 18:06:22Z kib $");
| 37__FBSDID("$FreeBSD: head/lib/libc/amd64/gen/setjmp.S 258447 2013-11-21 21:25:58Z andreast $");
|
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 restored.
47 */
48
49#include "SYS.h"
50
51ENTRY(setjmp)
52 pushq %rdi
53 movq %rdi,%rcx
54 movq $1,%rdi /* SIG_BLOCK */
55 movq $0,%rsi /* (sigset_t*)set */
56 leaq 72(%rcx),%rdx /* 9,10; (sigset_t*)oset */
57 /* stack is 16-byte aligned */
58 call PIC_PLT(CNAME(_sigprocmask))
59 popq %rdi
60 movq %rdi,%rcx
61 movq 0(%rsp),%rdx /* retval */
62 movq %rdx, 0(%rcx) /* 0; retval */
63 movq %rbx, 8(%rcx) /* 1; rbx */
64 movq %rsp,16(%rcx) /* 2; rsp */
65 movq %rbp,24(%rcx) /* 3; rbp */
66 movq %r12,32(%rcx) /* 4; r12 */
67 movq %r13,40(%rcx) /* 5; r13 */
68 movq %r14,48(%rcx) /* 6; r14 */
69 movq %r15,56(%rcx) /* 7; r15 */
70 fnstcw 64(%rcx) /* 8; fpu cw */
71 stmxcsr 68(%rcx) /* and mxcsr */
72 xorq %rax,%rax
73 ret
74END(setjmp)
75
| 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 restored.
47 */
48
49#include "SYS.h"
50
51ENTRY(setjmp)
52 pushq %rdi
53 movq %rdi,%rcx
54 movq $1,%rdi /* SIG_BLOCK */
55 movq $0,%rsi /* (sigset_t*)set */
56 leaq 72(%rcx),%rdx /* 9,10; (sigset_t*)oset */
57 /* stack is 16-byte aligned */
58 call PIC_PLT(CNAME(_sigprocmask))
59 popq %rdi
60 movq %rdi,%rcx
61 movq 0(%rsp),%rdx /* retval */
62 movq %rdx, 0(%rcx) /* 0; retval */
63 movq %rbx, 8(%rcx) /* 1; rbx */
64 movq %rsp,16(%rcx) /* 2; rsp */
65 movq %rbp,24(%rcx) /* 3; rbp */
66 movq %r12,32(%rcx) /* 4; r12 */
67 movq %r13,40(%rcx) /* 5; r13 */
68 movq %r14,48(%rcx) /* 6; r14 */
69 movq %r15,56(%rcx) /* 7; r15 */
70 fnstcw 64(%rcx) /* 8; fpu cw */
71 stmxcsr 68(%rcx) /* and mxcsr */
72 xorq %rax,%rax
73 ret
74END(setjmp)
75
|
76 .weak CNAME(longjmp)
77 .set CNAME(longjmp),CNAME(__longjmp)
| 76 WEAK_REFERENCE(__longjmp, longjmp)
|
78ENTRY(__longjmp)
79 pushq %rdi
80 pushq %rsi
81 movq %rdi,%rdx
82 movq $3,%rdi /* SIG_SETMASK */
83 leaq 72(%rdx),%rsi /* (sigset_t*)set */
84 movq $0,%rdx /* (sigset_t*)oset */
85 subq $0x8,%rsp /* make the stack 16-byte aligned */
86 call PIC_PLT(CNAME(_sigprocmask))
87 addq $0x8,%rsp
88 popq %rsi
89 popq %rdi /* jmpbuf */
90 movq %rdi,%rdx
91 /* Restore the mxcsr, but leave exception flags intact. */
92 stmxcsr -4(%rsp)
93 movl 68(%rdx),%eax
94 andl $0xffffffc0,%eax
95 movl -4(%rsp),%edi
96 andl $0x3f,%edi
97 xorl %eax,%edi
98 movl %edi,-4(%rsp)
99 ldmxcsr -4(%rsp)
100 movq %rsi,%rax /* retval */
101 movq 0(%rdx),%rcx
102 movq 8(%rdx),%rbx
103 movq 16(%rdx),%rsp
104 movq 24(%rdx),%rbp
105 movq 32(%rdx),%r12
106 movq 40(%rdx),%r13
107 movq 48(%rdx),%r14
108 movq 56(%rdx),%r15
109 fldcw 64(%rdx)
110 testq %rax,%rax
111 jnz 1f
112 incq %rax
1131: movq %rcx,0(%rsp)
114 ret
115END(__longjmp)
116
117 .section .note.GNU-stack,"",%progbits
| 77ENTRY(__longjmp)
78 pushq %rdi
79 pushq %rsi
80 movq %rdi,%rdx
81 movq $3,%rdi /* SIG_SETMASK */
82 leaq 72(%rdx),%rsi /* (sigset_t*)set */
83 movq $0,%rdx /* (sigset_t*)oset */
84 subq $0x8,%rsp /* make the stack 16-byte aligned */
85 call PIC_PLT(CNAME(_sigprocmask))
86 addq $0x8,%rsp
87 popq %rsi
88 popq %rdi /* jmpbuf */
89 movq %rdi,%rdx
90 /* Restore the mxcsr, but leave exception flags intact. */
91 stmxcsr -4(%rsp)
92 movl 68(%rdx),%eax
93 andl $0xffffffc0,%eax
94 movl -4(%rsp),%edi
95 andl $0x3f,%edi
96 xorl %eax,%edi
97 movl %edi,-4(%rsp)
98 ldmxcsr -4(%rsp)
99 movq %rsi,%rax /* retval */
100 movq 0(%rdx),%rcx
101 movq 8(%rdx),%rbx
102 movq 16(%rdx),%rsp
103 movq 24(%rdx),%rbp
104 movq 32(%rdx),%r12
105 movq 40(%rdx),%r13
106 movq 48(%rdx),%r14
107 movq 56(%rdx),%r15
108 fldcw 64(%rdx)
109 testq %rax,%rax
110 jnz 1f
111 incq %rax
1121: movq %rcx,0(%rsp)
113 ret
114END(__longjmp)
115
116 .section .note.GNU-stack,"",%progbits
|