diff options
Diffstat (limited to 'setjmp/longjmp.c')
-rw-r--r-- | setjmp/longjmp.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/setjmp/longjmp.c b/setjmp/longjmp.c new file mode 100644 index 0000000..9b1bda1 --- /dev/null +++ b/setjmp/longjmp.c @@ -0,0 +1,46 @@ +/* Copyright (C) 1991,92,94,95,97,98,2000,2002 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 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <stddef.h> +#include <setjmp.h> +#include <signal.h> + + +/* 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 +__libc_siglongjmp (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); +} + +strong_alias (__libc_siglongjmp, __libc_longjmp) +libc_hidden_def (__libc_longjmp) +weak_alias (__libc_siglongjmp, _longjmp) +weak_alias (__libc_siglongjmp, longjmp) +weak_alias (__libc_siglongjmp, siglongjmp) |