/* 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); static inline void init_fpu(void) { mtcr("cr<1, 2>", 0); } 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 */