| David Howells | 6a846f3 | 2012-03-28 18:30:02 +0100 | [diff] [blame] | 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 | |
| 18 | struct task_struct; |
| 19 | struct thread_struct; |
| 20 | asmlinkage 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 */ |