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

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Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta 2020-01-17 16:00:41 -08:00
parent bd71c453db
commit f05523aa7a
4 changed files with 33 additions and 25 deletions
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29
arch/arc/include/asm/fpu.h Normal file
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@ -0,0 +1,29 @@
/* 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 */

10
arch/arc/include/asm/processor.h
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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 {

17
arch/arc/include/asm/switch_to.h
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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)

2
arch/arc/kernel/fpu.c
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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.