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kernel/linux-rt-4.4.41/arch/sh/include/cpu-sh4/cpu/fpu.h 809 Bytes
5113f6f70   김현기   kernel add
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  /*
   * linux/arch/sh/kernel/cpu/sh4/sh4_fpu.h
   *
   * Copyright (C) 2006 STMicroelectronics Limited
   * Author: Carl Shaw <carl.shaw@st.com>
   *
   * May be copied or modified under the terms of the GNU General Public
   * License Version 2.  See linux/COPYING for more information.
   *
   * Definitions for SH4 FPU operations
   */
  
  #ifndef __CPU_SH4_FPU_H
  #define __CPU_SH4_FPU_H
  
  #define FPSCR_ENABLE_MASK	0x00000f80UL
  
  #define FPSCR_FMOV_DOUBLE	(1<<1)
  
  #define FPSCR_CAUSE_INEXACT	(1<<12)
  #define FPSCR_CAUSE_UNDERFLOW	(1<<13)
  #define FPSCR_CAUSE_OVERFLOW	(1<<14)
  #define FPSCR_CAUSE_DIVZERO	(1<<15)
  #define FPSCR_CAUSE_INVALID	(1<<16)
  #define FPSCR_CAUSE_ERROR 	(1<<17)
  
  #define FPSCR_DBL_PRECISION	(1<<19)
  #define FPSCR_ROUNDING_MODE(x)	((x >> 20) & 3)
  #define FPSCR_RM_NEAREST	(0)
  #define FPSCR_RM_ZERO		(1)
  
  #endif