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git.proxmox.com Git - mirror_ubuntu-bionic-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 */
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.
20 #define RELOC_HIDE(ptr, off) \
21 ({ unsigned long __ptr; \
22 __asm__ ("" : "=r"(__ptr) : "0"(ptr)); \
23 (typeof(ptr)) (__ptr + (off)); })
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__))