1 files changed, 17 insertions, 0 deletions

diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
new file mode 100644
index 000000000000..152734055403
--- /dev/null
+++ b/include/linux/compiler-gcc.h
@@ -0,0 +1,17 @@
+/* Never include this file directly.  Include <linux/compiler.h> instead.  */
+
+/*
+ * Common definitions for all gcc versions go here.
+ */
+
+
+/* Optimization barrier */
+/* The "volatile" is due to gcc bugs */
+#define barrier() __asm__ __volatile__("": : :"memory")
+
+/* This macro obfuscates arithmetic on a variable address so that gcc
+   shouldn't recognize the original var, and make assumptions about it */
+#define RELOC_HIDE(ptr, off)                                    \
+  ({ unsigned long __ptr;                                       \
+    __asm__ ("" : "=g"(__ptr) : "0"(ptr));              \
+    (typeof(ptr)) (__ptr + (off)); })