1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2#ifndef _ASM_POWERPC_CURRENT_H
 3#define _ASM_POWERPC_CURRENT_H
 4#ifdef __KERNEL__
 5
 6/*
 
 
 
 
 7 */
 8
 9struct task_struct;
10
11#ifdef __powerpc64__
12#include <linux/stddef.h>
13#include <asm/paca.h>
14
15static inline struct task_struct *get_current(void)
16{
17	struct task_struct *task;
18
19	/* get_current can be cached by the compiler, so no volatile */
20	asm ("ld %0,%1(13)"
21	: "=r" (task)
22	: "i" (offsetof(struct paca_struct, __current)));
23
24	return task;
25}
26#define current	get_current()
27
28#else
29
30/*
31 * We keep `current' in r2 for speed.
32 */
33register struct task_struct *current asm ("r2");
34
35#endif
36
37#endif /* __KERNEL__ */
38#endif /* _ASM_POWERPC_CURRENT_H */

 
 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 */