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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 */ | |
14 | #define RELOC_HIDE(ptr, off) \ | |
15 | ({ unsigned long __ptr; \ | |
16 | __asm__ ("" : "=g"(__ptr) : "0"(ptr)); \ | |
17 | (typeof(ptr)) (__ptr + (off)); }) |