--- /dev/null
+/* Never include this file directly. Include <lwk/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 */
+/*
+ * Versions of the ppc64 compiler before 4.1 had a bug where use of
+ * RELOC_HIDE could trash r30. The bug can be worked around by changing
+ * the inline assembly constraint from =g to =r, in this particular
+ * case either is valid.
+ */
+#define RELOC_HIDE(ptr, off) \
+ ({ unsigned long __ptr; \
+ __asm__ ("" : "=r"(__ptr) : "0"(ptr)); \
+ (typeof(ptr)) (__ptr + (off)); })
+
+
+#define inline inline __attribute__((always_inline))
+#define __inline__ __inline__ __attribute__((always_inline))
+#define __inline __inline __attribute__((always_inline))
+#define __deprecated __attribute__((deprecated))
+#define noinline __attribute__((noinline))
+#define __attribute_pure__ __attribute__((pure))
+#define __attribute_const__ __attribute__((__const__))
