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-rw-r--r--setjmp/sigjmp.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/setjmp/sigjmp.c b/setjmp/sigjmp.c
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+/* Copyright (C) 1992, 1994, 1997 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>
+
+/* This function is called by the `sigsetjmp' macro
+ before doing a `__setjmp' on ENV[0].__jmpbuf.
+ Always return zero. */
+
+int
+__sigjmp_save (sigjmp_buf env, int savemask)
+{
+ env[0].__mask_was_saved = (savemask &&
+ __sigprocmask (SIG_BLOCK, (sigset_t *) NULL,
+ &env[0].__saved_mask) == 0);
+
+ return 0;
+}