projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b920de1b DH |
1 | /* MN10300 Current task structure accessor |
| 2 | * | |
| 3 | * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. | |
| 4 | * Written by David Howells (dhowells@redhat.com) | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU General Public Licence | |
| 8 | * as published by the Free Software Foundation; either version | |
| 9 | * 2 of the Licence, or (at your option) any later version. | |
| 10 | */ | |
| 11 | #ifndef _ASM_CURRENT_H | |
| 12 | #define _ASM_CURRENT_H | |
| 13 | ||
| 14 | #include <linux/thread_info.h> | |
| 15 | ||
| 16 | /* | |
| 17 | * dedicate E2 to keeping the current task pointer | |
| 18 | */ | |
| 19 | #ifdef CONFIG_MN10300_CURRENT_IN_E2 | |
| 20 | ||
| 21 | register struct task_struct *const current asm("e2") __attribute__((used)); | |
| 22 | ||
| 23 | #define get_current() current | |
| 24 | ||
| 25 | extern struct task_struct *__current; | |
| 26 | ||
| 27 | #else | |
| 28 | static inline __attribute__((const)) | |
| 29 | struct task_struct *get_current(void) | |
| 30 | { | |
| 31 | return current_thread_info()->task; | |
| 32 | } | |
| 33 | ||
| 34 | #define current get_current() | |
| 35 | #endif | |
| 36 | ||
| 37 | #endif /* _ASM_CURRENT_H */ |