1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
/* Copyright (C) 1997-2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson (rth@tamu.edu).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
/* __sigsetjmp is implemented in terms of the getcontext trap on
Linux/Sparc64. */
#include <sysdep.h>
/* Offsets into the jmp_buf structure. */
#define O_mask_was_saved 512
#define O_gregs 32
#define O_g1 (O_gregs + 4*8)
/* int _setjmp(jmp_buf) */
ENTRY(_setjmp)
ba __sigsetjmp_local
set 0, %o1
END(_setjmp)
libc_hidden_def (_setjmp)
/* int setjmp(jmp_buf) */
ENTRY(setjmp)
ba,pt %xcc, __sigsetjmp_local
set 1, %o1
END(setjmp)
/* int __sigsetjmp(jmp_buf, savemask) */
ENTRY(__sigsetjmp)
__sigsetjmp_local:
/* Record whether the user is intending to save the sigmask. */
st %o1, [%o0 + O_mask_was_saved]
/* Load up our return value, as longjmp is going to override
the jmp_buf on its way back. */
mov %g0, %g1
/* And call getcontext! */
ta 0x6e
retl
mov %g1, %o0
END(__sigsetjmp)
weak_extern(_setjmp)
weak_extern(setjmp)
|