[mirror_ubuntu-zesty-kernel.git] / arch / powerpc / include / asm / current.h

#ifndef _ASM_POWERPC_CURRENT_H
#define _ASM_POWERPC_CURRENT_H
#ifdef __KERNEL__

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

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;

	__asm__ __volatile__("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
584224e4 DG	1	#ifndef _ASM_POWERPC_CURRENT_H
584224e4 DG	2	#define _ASM_POWERPC_CURRENT_H
88ced031	3	#ifdef __KERNEL__
584224e4 DG	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
	12	struct task_struct;
	13
	14	#ifdef __powerpc64__
dbc11f53	15	#include <linux/stddef.h>
584224e4 DG	16	#include <asm/paca.h>
584224e4 DG	17
5fe8e8b8 HD	18	static 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()
584224e4 DG	29
	30	#else
	31
	32	/*
	33	* We keep `current' in r2 for speed.
	34	*/
	35	register struct task_struct *current asm ("r2");
	36
	37	#endif
	38
88ced031	39	#endif /* __KERNEL__ */
584224e4	40	#endif /* _ASM_POWERPC_CURRENT_H */