1/*
2 *  Port on Texas Instruments TMS320C6x architecture
3 *
4 *  Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
5 *  Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
6 *
7 *  This program is free software; you can redistribute it and/or modify
8 *  it under the terms of the GNU General Public License version 2 as
9 *  published by the Free Software Foundation.
10 */
11#ifndef _ASM_C6X_SWITCH_TO_H
12#define _ASM_C6X_SWITCH_TO_H
13
14#include <linux/linkage.h>
15
16#define prepare_to_switch()    do { } while (0)
17
18struct task_struct;
19struct thread_struct;
20asmlinkage void *__switch_to(struct thread_struct *prev,
21			     struct thread_struct *next,
22			     struct task_struct *tsk);
23
24#define switch_to(prev, next, last)				\
25	do {							\
26		current->thread.wchan = (u_long) __builtin_return_address(0); \
27		(last) = __switch_to(&(prev)->thread,		\
28				     &(next)->thread, (prev));	\
29		mb();						\
30		current->thread.wchan = 0;			\
31	} while (0)
32
33#endif /* _ASM_C6X_SWITCH_TO_H */
34