/arch/powerpc/include/asm/current.h
C Header | 40 lines | 21 code | 10 blank | 9 comment | 0 complexity | c3bede4bdf5ad8084ae3011bacc92039 MD5 | raw file
Possible License(s): CC-BY-SA-3.0, GPL-2.0, LGPL-2.0, AGPL-1.0
1#ifndef _ASM_POWERPC_CURRENT_H
2#define _ASM_POWERPC_CURRENT_H
3#ifdef __KERNEL__
4
5/*
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11
12struct task_struct;
13
14#ifdef __powerpc64__
15#include <linux/stddef.h>
16#include <asm/paca.h>
17
18static inline struct task_struct *get_current(void)
19{
20 struct task_struct *task;
21
22 __asm__ __volatile__("ld %0,%1(13)"
23 : "=r" (task)
24 : "i" (offsetof(struct paca_struct, __current)));
25
26 return task;
27}
28#define current get_current()
29
30#else
31
32/*
33 * We keep `current' in r2 for speed.
34 */
35register struct task_struct *current asm ("r2");
36
37#endif
38
39#endif /* __KERNEL__ */
40#endif /* _ASM_POWERPC_CURRENT_H */