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/* FR-V CPU basic task switching
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* 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.
*/
#ifndef _ASM_SWITCH_TO_H
#define _ASM_SWITCH_TO_H
#include <linux/thread_info.h>
/*
* switch_to(prev, next) should switch from task `prev' to `next'
* `prev' will never be the same as `next'.
* The `mb' is to tell GCC not to cache `current' across this call.
*/
extern asmlinkage
struct task_struct *__switch_to(struct thread_struct *prev_thread,
struct thread_struct *next_thread,
struct task_struct *prev);
#define switch_to(prev, next, last) \
do { \
(prev)->thread.sched_lr = \
(unsigned long) __builtin_return_address(0); \
(last) = __switch_to(&(prev)->thread, &(next)->thread, (prev)); \
mb(); \
} while(0)
#endif /* _ASM_SWITCH_TO_H */