1/* Never include this file directly.  Include <linux/compiler.h> instead.  */
2
3/*
4 * Common definitions for all gcc versions go here.
5 */
6
7
8/* Optimization barrier */
9/* The "volatile" is due to gcc bugs */
10#define barrier() __asm__ __volatile__("": : :"memory")
11
12/* This macro obfuscates arithmetic on a variable address so that gcc
13   shouldn't recognize the original var, and make assumptions about it */
14/*
15 * Versions of the ppc64 compiler before 4.1 had a bug where use of
16 * RELOC_HIDE could trash r30. The bug can be worked around by changing
17 * the inline assembly constraint from =g to =r, in this particular
18 * case either is valid.
19 */
20#define RELOC_HIDE(ptr, off)					\
21  ({ unsigned long __ptr;					\
22    __asm__ ("" : "=r"(__ptr) : "0"(ptr));		\
23    (typeof(ptr)) (__ptr + (off)); })
24
25/* &a[0] degrades to a pointer: a different type from an array */
26#define __must_be_array(a) \
27  BUILD_BUG_ON_ZERO(__builtin_types_compatible_p(typeof(a), typeof(&a[0])))
28
29#define inline		inline		__attribute__((always_inline))
30#define __inline__	__inline__	__attribute__((always_inline))
31#define __inline	__inline	__attribute__((always_inline))
32#define __deprecated			__attribute__((deprecated))
33#define __packed			__attribute__((packed))
34#define __weak				__attribute__((weak))
35#define __naked				__attribute__((naked))
36#define __noreturn			__attribute__((noreturn))
37#define __pure				__attribute__((pure))
38#define __aligned(x)			__attribute__((aligned(x)))
39#define __printf(a,b)			__attribute__((format(printf,a,b)))
40#define  noinline			__attribute__((noinline))
41#define __attribute_pure__		__attribute__((pure))
42#define __attribute_const__		__attribute__((__const__))
43#define __maybe_unused			__attribute__((unused))
44