[linux-2.6-block.git] / arch / powerpc / include / asm / current.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef _ASM_POWERPC_CURRENT_H
#define _ASM_POWERPC_CURRENT_H
#ifdef __KERNEL__

/*
 */

struct task_struct;

#ifdef __powerpc64__
#include <linux/stddef.h>
#include <asm/paca.h>

static inline struct task_struct *get_current(void)
{
	struct task_struct *task;

	/* get_current can be cached by the compiler, so no volatile */
	asm ("ld %0,%1(13)"
	: "=r" (task)
	: "i" (offsetof(struct paca_struct, __current)));

	return task;
}
#define current	get_current()

#else

/*
 * We keep `current' in r2 for speed.
 */
register struct task_struct *current asm ("r2");

#endif

#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_CURRENT_H */
Commit	Line	Data
2874c5fd	1	/* SPDX-License-Identifier: GPL-2.0-or-later */
584224e4 DG	2	#ifndef _ASM_POWERPC_CURRENT_H
584224e4 DG	3	#define _ASM_POWERPC_CURRENT_H
88ced031	4	#ifdef __KERNEL__
584224e4 DG	5
584224e4 DG	6	/*
584224e4 DG	7	*/
	8
	9	struct task_struct;
	10
	11	#ifdef __powerpc64__
dbc11f53	12	#include <linux/stddef.h>
584224e4 DG	13	#include <asm/paca.h>
584224e4 DG	14
5fe8e8b8 HD	15	static inline struct task_struct *get_current(void)
	16	{
	17	struct task_struct *task;
	18
e354d7dc NP	19	/* get_current can be cached by the compiler, so no volatile */
e354d7dc NP	20	asm ("ld %0,%1(13)"
5fe8e8b8 HD	21	: "=r" (task)
	22	: "i" (offsetof(struct paca_struct, __current)));
	23
	24	return task;
	25	}
	26	#define current get_current()
584224e4 DG	27
	28	#else
	29
	30	/*
	31	* We keep `current' in r2 for speed.
	32	*/
	33	register struct task_struct *current asm ("r2");
	34
	35	#endif
	36
88ced031	37	#endif /* __KERNEL__ */
584224e4	38	#endif /* _ASM_POWERPC_CURRENT_H */