1103285Sikob/* SPDX-License-Identifier: GPL-2.0 */ 2103285Sikob 3103285Sikob#ifndef __ASM_CSKY_FPU_H 4103285Sikob#define __ASM_CSKY_FPU_H 5103285Sikob 6103285Sikob#include <asm/sigcontext.h> 7103285Sikob#include <asm/ptrace.h> 8103285Sikob 9103285Sikobint fpu_libc_helper(struct pt_regs *regs); 10103285Sikobvoid fpu_fpe(struct pt_regs *regs); 11103285Sikob 12103285Sikobstatic inline void init_fpu(void) { mtcr("cr<1, 2>", 0); } 13103285Sikob 14103285Sikobvoid save_to_user_fp(struct user_fp *user_fp); 15103285Sikobvoid restore_from_user_fp(struct user_fp *user_fp); 16106802Ssimokawa 17103285Sikob/* 18103285Sikob * Define the fesr bit for fpe handle. 19103285Sikob */ 20103285Sikob#define FPE_ILLE (1 << 16) /* Illegal instruction */ 21103285Sikob#define FPE_FEC (1 << 7) /* Input float-point arithmetic exception */ 22103285Sikob#define FPE_IDC (1 << 5) /* Input denormalized exception */ 23103285Sikob#define FPE_IXC (1 << 4) /* Inexact exception */ 24103285Sikob#define FPE_UFC (1 << 3) /* Underflow exception */ 25103285Sikob#define FPE_OFC (1 << 2) /* Overflow exception */ 26103285Sikob#define FPE_DZC (1 << 1) /* Divide by zero exception */ 27103285Sikob#define FPE_IOC (1 << 0) /* Invalid operation exception */ 28103285Sikob#define FPE_REGULAR_EXCEPTION (FPE_IXC | FPE_UFC | FPE_OFC | FPE_DZC | FPE_IOC) 29103285Sikob 30103285Sikob#ifdef CONFIG_OPEN_FPU_IDE 31103285Sikob#define IDE_STAT (1 << 5) 32103285Sikob#else 33103285Sikob#define IDE_STAT 0 34103285Sikob#endif 35103285Sikob 36106802Ssimokawa#ifdef CONFIG_OPEN_FPU_IXE 37103285Sikob#define IXE_STAT (1 << 4) 38103285Sikob#else 39103285Sikob#define IXE_STAT 0 40103285Sikob#endif 41103285Sikob 42103285Sikob#ifdef CONFIG_OPEN_FPU_UFE 43103285Sikob#define UFE_STAT (1 << 3) 44103285Sikob#else 45103285Sikob#define UFE_STAT 0 46103285Sikob#endif 47103285Sikob 48103285Sikob#ifdef CONFIG_OPEN_FPU_OFE 49103285Sikob#define OFE_STAT (1 << 2) 50103285Sikob#else 51103285Sikob#define OFE_STAT 0 52103285Sikob#endif 53103285Sikob 54103285Sikob#ifdef CONFIG_OPEN_FPU_DZE 55103285Sikob#define DZE_STAT (1 << 1) 56103285Sikob#else 57103285Sikob#define DZE_STAT 0 58103285Sikob#endif 59103285Sikob 60103285Sikob#ifdef CONFIG_OPEN_FPU_IOE 61103285Sikob#define IOE_STAT (1 << 0) 62103285Sikob#else 63103285Sikob#define IOE_STAT 0 64103285Sikob#endif 65103285Sikob 66103285Sikob#endif /* __ASM_CSKY_FPU_H */ 67103285Sikob