1 files changed, 30 insertions, 0 deletions
diff --git a/lib/stack_protector/stack_protector.c b/lib/stack_protector/stack_protector.c
new file mode 100644
index 00000000..fba5e1ff
--- /dev/null
+++ b/lib/stack_protector/stack_protector.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#include <debug.h>
+#include <platform.h>
+#include <stdint.h>
+
+/*
+ * Canary value used by the compiler runtime checks to detect stack corruption.
+ *
+ * Force the canary to be in .data to allow predictable memory layout relatively
+ * to the stacks.
+ */
+u_register_t  __attribute__((section(".data.stack_protector_canary")))
+	__stack_chk_guard = (u_register_t) 3288484550995823360ULL;
+
+/*
+ * Function called when the stack's canary check fails, which means the stack
+ * was corrupted. It must not return.
+ */
+void __dead2 __stack_chk_fail(void)
+{
+#if DEBUG
+	ERROR("Stack corruption detected\n");
+#endif
+	panic();
+}
+