Add gcc-4.1 non-TLS __stack_chk_guard support. Run the guard setup only once.

1 files changed, 35 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/common/ssp-local.c b/libc/sysdeps/linux/common/ssp-local.c
new file mode 100644
index 000000000..a835ced0e
--- /dev/null
+++ b/libc/sysdeps/linux/common/ssp-local.c
@@ -0,0 +1,35 @@
+/* Copyright (C) 2005 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.  */
+
+/*
+ * Peter S. Mazinger ps.m[@]gmx.net
+ * copied stack_chk_fail_local.c from glibc and adapted for uClibc
+ */
+
+#include <features.h>
+
+extern void __stack_chk_fail (void) __attribute__ ((noreturn));
+
+/* On some architectures, this helps needless PIC pointer setup
+   that would be needed just for the __stack_chk_fail call.  */
+
+void __attribute__ ((noreturn)) attribute_hidden
+__stack_chk_fail_local (void)
+{
+  __stack_chk_fail ();
+}