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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - include/linux/compiler-gcc.h
1 /* Never include this file directly. Include <linux/compiler.h> instead. */
4 * Common definitions for all gcc versions go here.
8 /* Optimization barrier */
9 /* The "volatile" is due to gcc bugs */
10 #define barrier() __asm__ __volatile__("": : :"memory")
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)); })