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
9 int fpu_libc_helper(struct pt_regs *regs);
10 void fpu_fpe(struct pt_regs *regs);
11
12 static inline void init_fpu(void) { mtcr("cr<1, 2>", 0); }
13
14 void save_to_user_fp(struct user_fp *user_fp);
15 void 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
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