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 21register struct task_struct *const current asm("e2") __attribute__((used)); 22 23#define get_current() current 24 25extern struct task_struct *__current; 26 27#else 28static inline __attribute__((const)) 29struct 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 */ 38