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1 | /* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. | |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Library General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Library General Public | |
15 | License along with the GNU C Library; see the file COPYING.LIB. If | |
16 | not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
17 | Cambridge, MA 02139, USA. */ | |
18 | ||
19 | #include <stddef.h> | |
20 | #include <setjmp.h> | |
21 | #include <signal.h> | |
22 | ||
23 | ||
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24 | extern void _longjmp_unwind (jmp_buf env, int val); |
25 | ||
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26 | /* Set the signal mask to the one specified in ENV, and jump |
27 | to the position specified in ENV, causing the setjmp | |
28 | call there to return VAL, or 1 if VAL is 0. */ | |
29 | void | |
30 | longjmp (sigjmp_buf env, int val) | |
31 | { | |
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32 | /* Perform any cleanups needed by the frames being unwound. */ |
33 | _longjmp_unwind (env, val); | |
34 | ||
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35 | if (env[0].__mask_was_saved) |
36 | /* Restore the saved signal mask. */ | |
37 | (void) __sigprocmask (SIG_SETMASK, &env[0].__saved_mask, | |
38 | (sigset_t *) NULL); | |
39 | ||
40 | /* Call the machine-dependent function to restore machine state. */ | |
41 | __longjmp (env[0].__jmpbuf, val ?: 1); | |
42 | } | |
43 | ||
44 | weak_alias (longjmp, _longjmp) | |
45 | weak_alias (longjmp, siglongjmp) |