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
|
/* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <stddef.h>
#include <setjmp.h>
#include <signal.h>
extern void _longjmp_unwind (jmp_buf env, int val);
/* Set the signal mask to the one specified in ENV, and jump
to the position specified in ENV, causing the setjmp
call there to return VAL, or 1 if VAL is 0. */
void
longjmp (sigjmp_buf env, int val)
{
/* Perform any cleanups needed by the frames being unwound. */
_longjmp_unwind (env, val);
if (env[0].__mask_was_saved)
/* Restore the saved signal mask. */
(void) __sigprocmask (SIG_SETMASK, &env[0].__saved_mask,
(sigset_t *) NULL);
/* Call the machine-dependent function to restore machine state. */
__longjmp (env[0].__jmpbuf, val ?: 1);
}
weak_alias (longjmp, _longjmp)
weak_alias (longjmp, siglongjmp)
|
