[deliverable/linux.git] / arch / xtensa / include / asm / switch_to.h

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 2001 - 2005 Tensilica Inc.
 */

#ifndef _XTENSA_SWITCH_TO_H
#define _XTENSA_SWITCH_TO_H

/* * switch_to(n) should switch tasks to task nr n, first
 * checking that n isn't the current task, in which case it does nothing.
 */
extern void *_switch_to(void *last, void *next);

#define switch_to(prev,next,last)		\
do {						\
	(last) = _switch_to(prev, next);	\
} while(0)

#endif /* _XTENSA_SWITCH_TO_H */
Commit	Line	Data
f9aa7e18 DH	1	/*
	2	* This file is subject to the terms and conditions of the GNU General Public
	3	* License. See the file "COPYING" in the main directory of this archive
	4	* for more details.
	5	*
	6	* Copyright (C) 2001 - 2005 Tensilica Inc.
	7	*/
	8
	9	#ifndef _XTENSA_SWITCH_TO_H
	10	#define _XTENSA_SWITCH_TO_H
	11
	12	/* * switch_to(n) should switch tasks to task nr n, first
	13	* checking that n isn't the current task, in which case it does nothing.
	14	*/
	15	extern void _switch_to(void last, void *next);
	16
	17	#define switch_to(prev,next,last) \
	18	do { \
	19	(last) = _switch_to(prev, next); \
	20	} while(0)
	21
	22	#endif /* _XTENSA_SWITCH_TO_H */