/* * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef _ASM_ARC_SWITCH_TO_H #define _ASM_ARC_SWITCH_TO_H #ifndef __ASSEMBLY__ #include <linux/sched.h> #ifdef CONFIG_ARC_FPU_SAVE_RESTORE extern void fpu_save_restore(struct task_struct *p, struct task_struct *n); #define ARC_FPU_PREV(p, n) fpu_save_restore(p, n) #define ARC_FPU_NEXT(t) #else #define ARC_FPU_PREV(p, n) #define ARC_FPU_NEXT(n) #endif /* !CONFIG_ARC_FPU_SAVE_RESTORE */ #ifdef CONFIG_ARC_PLAT_EZNPS extern void dp_save_restore(struct task_struct *p, struct task_struct *n); #define ARC_EZNPS_DP_PREV(p, n) dp_save_restore(p, n) #else #define ARC_EZNPS_DP_PREV(p, n) #endif /* !CONFIG_ARC_PLAT_EZNPS */ struct task_struct *__switch_to(struct task_struct *p, struct task_struct *n); #define switch_to(prev, next, last) \ do { \ ARC_EZNPS_DP_PREV(prev, next); \ ARC_FPU_PREV(prev, next); \ last = __switch_to(prev, next);\ ARC_FPU_NEXT(next); \ mb(); \ } while (0) #endif #endif