Commit f05523aa authored by Vineet Gupta's avatar Vineet Gupta
Browse files

ARC: fpu: declutter code, move bits out into fpu.h 



Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
parent bd71c453

arch/arc/include/asm/fpu.h

0 → 100644
+29 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (C) 2020 Synopsys, Inc. (www.synopsys.com)

 *

 */



#ifndef _ASM_ARC_FPU_H

#define _ASM_ARC_FPU_H



#ifdef CONFIG_ARC_FPU_SAVE_RESTORE



#include <asm/ptrace.h>



/* These DPFP regs need to be saved/restored across ctx-sw */

struct arc_fpu {

	struct {

		unsigned int l, h;

	} aux_dpfp[2];

};



extern void fpu_save_restore(struct task_struct *p, struct task_struct *n);



#else



#define fpu_save_restore(p, n)



#endif	/* CONFIG_ARC_FPU_SAVE_RESTORE */



#endif	/* _ASM_ARC_FPU_H */

arch/arc/include/asm/processor.h

+1 −9
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@@ -14,15 +14,7 @@ 
#ifndef __ASSEMBLY__



#include <asm/ptrace.h>



#ifdef CONFIG_ARC_FPU_SAVE_RESTORE

/* These DPFP regs need to be saved/restored across ctx-sw */

struct arc_fpu {

	struct {

		unsigned int l, h;

	} aux_dpfp[2];

};

#endif

#include <asm/fpu.h>



#ifdef CONFIG_ARC_PLAT_EZNPS

struct eznps_dp {

arch/arc/include/asm/switch_to.h

+2 −15
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@@ -9,19 +9,7 @@ 
#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 */

#include <asm/fpu.h>



#ifdef CONFIG_ARC_PLAT_EZNPS

extern void dp_save_restore(struct task_struct *p, struct task_struct *n);
@@ -36,9 +24,8 @@ 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);	\

	fpu_save_restore(prev, next);	\

	last = __switch_to(prev, next);\

	ARC_FPU_NEXT(next);		\

	mb();				\

} while (0)

arch/arc/kernel/fpu.c

+1 −1
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@@ -6,7 +6,7 @@ 
 */



#include <linux/sched.h>

#include <asm/switch_to.h>

#include <asm/fpu.h>



/*

 * To save/restore FPU regs, simplest scheme would use LR/SR insns.