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1da177e4 LT |
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 */ | |
c8d52465 AB |
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 | */ | |
1da177e4 LT |
20 | #define RELOC_HIDE(ptr, off) \ |
21 | ({ unsigned long __ptr; \ | |
c8d52465 | 22 | __asm__ ("" : "=r"(__ptr) : "0"(ptr)); \ |
1da177e4 | 23 | (typeof(ptr)) (__ptr + (off)); }) |
a1365647 AM |
24 | |
25 | ||
26 | #define inline inline __attribute__((always_inline)) | |
27 | #define __inline__ __inline__ __attribute__((always_inline)) | |
28 | #define __inline __inline __attribute__((always_inline)) | |
29 | #define __deprecated __attribute__((deprecated)) | |
30 | #define noinline __attribute__((noinline)) | |
31 | #define __attribute_pure__ __attribute__((pure)) | |
32 | #define __attribute_const__ __attribute__((__const__)) |