/arch/microblaze/include/asm/current.h
C Header | 29 lines | 8 code | 4 blank | 17 comment | 0 complexity | 134aee03555235d87481e1d4e6894ab8 MD5 | raw file
Possible License(s): LGPL-2.0, AGPL-1.0, GPL-2.0
1/*
2 * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
3 * Copyright (C) 2008-2009 PetaLogix
4 * Copyright (C) 2006 Atmark Techno, Inc.
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 */
10
11#ifndef _ASM_MICROBLAZE_CURRENT_H
12#define _ASM_MICROBLAZE_CURRENT_H
13
14/*
15 * Register used to hold the current task pointer while in the kernel.
16 * Any `call clobbered' register without a special meaning should be OK,
17 * but check asm/microblaze/kernel/entry.S to be sure.
18 */
19#define CURRENT_TASK r31
20# ifndef __ASSEMBLY__
21/*
22 * Dedicate r31 to keeping the current task pointer
23 */
24register struct task_struct *current asm("r31");
25
26# define get_current() current
27# endif /* __ASSEMBLY__ */
28
29#endif /* _ASM_MICROBLAZE_CURRENT_H */