| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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)); }) |