X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=include%2Flinux%2Fcompiler-gcc.h;h=03ec2311fb29c9ce4d252e2e9b41b8eea19e8e18;hb=0560551dca0c02a4b23f95a9c339882ff291e1c7;hp=2e05e1e6b0e652e471a5bff40c071dc2d40ffb14;hpb=5367f2d67c7d0bf1faae90e6e7b4e2ac3c9b5e0f;p=powerpc.git

diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index 2e05e1e6b0..03ec2311fb 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -11,16 +11,33 @@
 
 /* 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__ ("" : "=g"(__ptr) : "0"(ptr));		\
+    __asm__ ("" : "=r"(__ptr) : "0"(ptr));		\
     (typeof(ptr)) (__ptr + (off)); })
 
+/* &a[0] degrades to a pointer: a different type from an array */
+#define __must_be_array(a) \
+  BUILD_BUG_ON_ZERO(__builtin_types_compatible_p(typeof(a), typeof(&a[0])))
 
 #define inline		inline		__attribute__((always_inline))
 #define __inline__	__inline__	__attribute__((always_inline))
 #define __inline	__inline	__attribute__((always_inline))
 #define __deprecated			__attribute__((deprecated))
+#define __packed			__attribute__((packed))
+#define __weak				__attribute__((weak))
+#define __naked				__attribute__((naked))
+#define __noreturn			__attribute__((noreturn))
+#define __pure				__attribute__((pure))
+#define __aligned(x)			__attribute__((aligned(x)))
+#define __printf(a,b)			__attribute__((format(printf,a,b)))
 #define  noinline			__attribute__((noinline))
 #define __attribute_pure__		__attribute__((pure))
 #define __attribute_const__		__attribute__((__const__))
+#define __maybe_unused			__attribute__((unused))