162306a36Sopenharmony_ci/*
262306a36Sopenharmony_ci * This file is subject to the terms and conditions of the GNU General Public
362306a36Sopenharmony_ci * License.  See the file "COPYING" in the main directory of this archive
462306a36Sopenharmony_ci * for more details.
562306a36Sopenharmony_ci *
662306a36Sopenharmony_ci * Copyright (C) 2001 - 2005 Tensilica Inc.
762306a36Sopenharmony_ci */
862306a36Sopenharmony_ci
962306a36Sopenharmony_ci#ifndef _XTENSA_SWITCH_TO_H
1062306a36Sopenharmony_ci#define _XTENSA_SWITCH_TO_H
1162306a36Sopenharmony_ci
1262306a36Sopenharmony_ci/* * switch_to(n) should switch tasks to task nr n, first
1362306a36Sopenharmony_ci * checking that n isn't the current task, in which case it does nothing.
1462306a36Sopenharmony_ci */
1562306a36Sopenharmony_ciextern void *_switch_to(void *last, void *next);
1662306a36Sopenharmony_ci
1762306a36Sopenharmony_ci#define switch_to(prev,next,last)		\
1862306a36Sopenharmony_cido {						\
1962306a36Sopenharmony_ci	(last) = _switch_to(prev, next);	\
2062306a36Sopenharmony_ci} while(0)
2162306a36Sopenharmony_ci
2262306a36Sopenharmony_ci#endif /* _XTENSA_SWITCH_TO_H */
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