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