[linux-2.6-block.git] / arch / arm64 / include / asm / current.h

#ifndef __ASM_CURRENT_H
#define __ASM_CURRENT_H

#include <linux/compiler.h>

#include <asm/sysreg.h>

#ifndef __ASSEMBLY__

struct task_struct;

/*
 * We don't use read_sysreg() as we want the compiler to cache the value where
 * possible.
 */
static __always_inline struct task_struct *get_current(void)
{
	unsigned long sp_el0;

	asm ("mrs %0, sp_el0" : "=r" (sp_el0));

	return (struct task_struct *)sp_el0;
}

#define current get_current()

#endif /* __ASSEMBLY__ */

#endif /* __ASM_CURRENT_H */
Commit	Line	Data
c02433dd MR	1	#ifndef __ASM_CURRENT_H
	2	#define __ASM_CURRENT_H
	3
	4	#include <linux/compiler.h>
	5
	6	#include <asm/sysreg.h>
	7
	8	#ifndef __ASSEMBLY__
	9
	10	struct task_struct;
	11
9d84fb27 MR	12	/*
	13	* We don't use read_sysreg() as we want the compiler to cache the value where
	14	* possible.
	15	*/
c02433dd MR	16	static __always_inline struct task_struct *get_current(void)
c02433dd MR	17	{
9d84fb27 MR	18	unsigned long sp_el0;
	19
	20	asm ("mrs %0, sp_el0" : "=r" (sp_el0));
	21
	22	return (struct task_struct *)sp_el0;
c02433dd MR	23	}
	24
	25	#define current get_current()
	26
	27	#endif /* __ASSEMBLY__ */
	28
	29	#endif /* __ASM_CURRENT_H */
	30