1/* SPDX-License-Identifier: GPL-2.0 */
2
3#ifndef __ASM_CSKY_FPU_H
4#define __ASM_CSKY_FPU_H
5
6#include <asm/sigcontext.h>
7#include <asm/ptrace.h>
8
9int fpu_libc_helper(struct pt_regs *regs);
10void fpu_fpe(struct pt_regs *regs);
11
12static inline void init_fpu(void) { mtcr("cr<1, 2>", 0); }
13
14void save_to_user_fp(struct user_fp *user_fp);
15void restore_from_user_fp(struct user_fp *user_fp);
16
17/*
18 * Define the fesr bit for fpe handle.
19 */
20#define  FPE_ILLE  (1 << 16)    /* Illegal instruction  */
21#define  FPE_FEC   (1 << 7)     /* Input float-point arithmetic exception */
22#define  FPE_IDC   (1 << 5)     /* Input denormalized exception */
23#define  FPE_IXC   (1 << 4)     /* Inexact exception */
24#define  FPE_UFC   (1 << 3)     /* Underflow exception */
25#define  FPE_OFC   (1 << 2)     /* Overflow exception */
26#define  FPE_DZC   (1 << 1)     /* Divide by zero exception */
27#define  FPE_IOC   (1 << 0)     /* Invalid operation exception */
28#define  FPE_REGULAR_EXCEPTION (FPE_IXC | FPE_UFC | FPE_OFC | FPE_DZC | FPE_IOC)
29
30#ifdef CONFIG_OPEN_FPU_IDE
31#define IDE_STAT   (1 << 5)
32#else
33#define IDE_STAT   0
34#endif
35
36#ifdef CONFIG_OPEN_FPU_IXE
37#define IXE_STAT   (1 << 4)
38#else
39#define IXE_STAT   0
40#endif
41
42#ifdef CONFIG_OPEN_FPU_UFE
43#define UFE_STAT   (1 << 3)
44#else
45#define UFE_STAT   0
46#endif
47
48#ifdef CONFIG_OPEN_FPU_OFE
49#define OFE_STAT   (1 << 2)
50#else
51#define OFE_STAT   0
52#endif
53
54#ifdef CONFIG_OPEN_FPU_DZE
55#define DZE_STAT   (1 << 1)
56#else
57#define DZE_STAT   0
58#endif
59
60#ifdef CONFIG_OPEN_FPU_IOE
61#define IOE_STAT   (1 << 0)
62#else
63#define IOE_STAT   0
64#endif
65
66#endif /* __ASM_CSKY_FPU_H */
67