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/* SPDX-License-Identifier: GPL-2.0 */
// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#ifndef __ASM_CSKY_FPU_H
#define __ASM_CSKY_FPU_H
#include <asm/sigcontext.h>
#include <asm/ptrace.h>
int fpu_libc_helper(struct pt_regs *regs);
void fpu_fpe(struct pt_regs *regs);
void __init init_fpu(void);
void save_to_user_fp(struct user_fp *user_fp);
void restore_from_user_fp(struct user_fp *user_fp);
/*
* Define the fesr bit for fpe handle.
*/
#define FPE_ILLE (1 << 16) /* Illegal instruction */
#define FPE_FEC (1 << 7) /* Input float-point arithmetic exception */
#define FPE_IDC (1 << 5) /* Input denormalized exception */
#define FPE_IXC (1 << 4) /* Inexact exception */
#define FPE_UFC (1 << 3) /* Underflow exception */
#define FPE_OFC (1 << 2) /* Overflow exception */
#define FPE_DZC (1 << 1) /* Divide by zero exception */
#define FPE_IOC (1 << 0) /* Invalid operation exception */
#define FPE_REGULAR_EXCEPTION (FPE_IXC | FPE_UFC | FPE_OFC | FPE_DZC | FPE_IOC)
#ifdef CONFIG_OPEN_FPU_IDE
#define IDE_STAT (1 << 5)
#else
#define IDE_STAT 0
#endif
#ifdef CONFIG_OPEN_FPU_IXE
#define IXE_STAT (1 << 4)
#else
#define IXE_STAT 0
#endif
#ifdef CONFIG_OPEN_FPU_UFE
#define UFE_STAT (1 << 3)
#else
#define UFE_STAT 0
#endif
#ifdef CONFIG_OPEN_FPU_OFE
#define OFE_STAT (1 << 2)
#else
#define OFE_STAT 0
#endif
#ifdef CONFIG_OPEN_FPU_DZE
#define DZE_STAT (1 << 1)
#else
#define DZE_STAT 0
#endif
#ifdef CONFIG_OPEN_FPU_IOE
#define IOE_STAT (1 << 0)
#else
#define IOE_STAT 0
#endif
#endif /* __ASM_CSKY_FPU_H */
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