18c2ecf20Sopenharmony_ci/*
28c2ecf20Sopenharmony_ci * This file is subject to the terms and conditions of the GNU General Public
38c2ecf20Sopenharmony_ci * License.  See the file "COPYING" in the main directory of this archive
48c2ecf20Sopenharmony_ci * for more details.
58c2ecf20Sopenharmony_ci *
68c2ecf20Sopenharmony_ci * Copyright (C) 2001 - 2005 Tensilica Inc.
78c2ecf20Sopenharmony_ci */
88c2ecf20Sopenharmony_ci
98c2ecf20Sopenharmony_ci#ifndef _XTENSA_SWITCH_TO_H
108c2ecf20Sopenharmony_ci#define _XTENSA_SWITCH_TO_H
118c2ecf20Sopenharmony_ci
128c2ecf20Sopenharmony_ci/* * switch_to(n) should switch tasks to task nr n, first
138c2ecf20Sopenharmony_ci * checking that n isn't the current task, in which case it does nothing.
148c2ecf20Sopenharmony_ci */
158c2ecf20Sopenharmony_ciextern void *_switch_to(void *last, void *next);
168c2ecf20Sopenharmony_ci
178c2ecf20Sopenharmony_ci#define switch_to(prev,next,last)		\
188c2ecf20Sopenharmony_cido {						\
198c2ecf20Sopenharmony_ci	(last) = _switch_to(prev, next);	\
208c2ecf20Sopenharmony_ci} while(0)
218c2ecf20Sopenharmony_ci
228c2ecf20Sopenharmony_ci#endif /* _XTENSA_SWITCH_TO_H */
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