release/src-rt-6.x.4708/linux/linux-2.6.36/arch/sh/include/cpu-sh4/cpu/fpu.h

   1 /*
   2  * linux/arch/sh/kernel/cpu/sh4/sh4_fpu.h
   3  *
   4  * Copyright (C) 2006 STMicroelectronics Limited
   5  * Author: Carl Shaw <carl.shaw@st.com>
   6  *
   7  * May be copied or modified under the terms of the GNU General Public
   8  * License Version 2.  See linux/COPYING for more information.
   9  *
  10  * Definitions for SH4 FPU operations
  11  */
  12
  13 #ifndef __CPU_SH4_FPU_H
  14 #define __CPU_SH4_FPU_H
  15
  16 #define FPSCR_ENABLE_MASK       0x00000f80UL
  17
  18 #define FPSCR_FMOV_DOUBLE       (1<<1)
  19
  20 #define FPSCR_CAUSE_INEXACT     (1<<12)
  21 #define FPSCR_CAUSE_UNDERFLOW   (1<<13)
  22 #define FPSCR_CAUSE_OVERFLOW    (1<<14)
  23 #define FPSCR_CAUSE_DIVZERO     (1<<15)
  24 #define FPSCR_CAUSE_INVALID     (1<<16)
  25 #define FPSCR_CAUSE_ERROR       (1<<17)
  26
  27 #define FPSCR_DBL_PRECISION     (1<<19)
  28 #define FPSCR_ROUNDING_MODE(x)  ((x >> 20) & 3)
  29 #define FPSCR_RM_NEAREST        (0)
  30 #define FPSCR_RM_ZERO           (1)
  31
  32 #endif