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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 */ |