2019-06-04 16:11:33 +08:00
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/* SPDX-License-Identifier: GPL-2.0-only */
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2013-01-18 17:42:18 +08:00
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/*
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* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
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*/
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#ifndef _ASM_ARC_SWITCH_TO_H
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#define _ASM_ARC_SWITCH_TO_H
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#ifndef __ASSEMBLY__
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#include <linux/sched.h>
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#ifdef CONFIG_ARC_FPU_SAVE_RESTORE
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extern void fpu_save_restore(struct task_struct *p, struct task_struct *n);
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#define ARC_FPU_PREV(p, n) fpu_save_restore(p, n)
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#define ARC_FPU_NEXT(t)
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#else
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#define ARC_FPU_PREV(p, n)
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#define ARC_FPU_NEXT(n)
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#endif /* !CONFIG_ARC_FPU_SAVE_RESTORE */
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2017-06-15 16:43:59 +08:00
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#ifdef CONFIG_ARC_PLAT_EZNPS
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extern void dp_save_restore(struct task_struct *p, struct task_struct *n);
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#define ARC_EZNPS_DP_PREV(p, n) dp_save_restore(p, n)
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#else
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#define ARC_EZNPS_DP_PREV(p, n)
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#endif /* !CONFIG_ARC_PLAT_EZNPS */
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2013-01-18 17:42:18 +08:00
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struct task_struct *__switch_to(struct task_struct *p, struct task_struct *n);
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#define switch_to(prev, next, last) \
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do { \
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2017-06-15 16:43:59 +08:00
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ARC_EZNPS_DP_PREV(prev, next); \
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2013-01-18 17:42:18 +08:00
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ARC_FPU_PREV(prev, next); \
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last = __switch_to(prev, next);\
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ARC_FPU_NEXT(next); \
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mb(); \
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} while (0)
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#endif
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#endif
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