/* FPU control word bits.  SPARC version.

   Copyright (C) 1997-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Miguel de Icaza

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#ifndef _FPU_CONTROL_H

#define _FPU_CONTROL_H	1

#include <features.h>

#include <bits/wordsize.h>

/* masking of interrupts */

#define _FPU_MASK_IM  0x08000000

#define _FPU_MASK_OM  0x04000000

#define _FPU_MASK_UM  0x02000000

#define _FPU_MASK_ZM  0x01000000

#define _FPU_MASK_PM  0x00800000

/* precision control */

#define _FPU_EXTENDED 0x00000000     /* RECOMMENDED */

#define _FPU_DOUBLE   0x20000000

#define _FPU_80BIT    0x30000000

#define _FPU_SINGLE   0x10000000     /* DO NOT USE */

/* rounding control / Sparc */

#define _FPU_RC_DOWN    0xc0000000

#define _FPU_RC_UP      0x80000000

#define _FPU_RC_ZERO    0x40000000

#define _FPU_RC_NEAREST 0x0        /* RECOMMENDED */

#define _FPU_RESERVED   0x30300000  /* Reserved bits in cw */

/* Now two recommended cw */

/* Linux and IEEE default:

     - extended precision

     - rounding to nearest

     - no exceptions  */

#define _FPU_DEFAULT  0x0

#define _FPU_IEEE     0x0

/* Type of the control word.  */

typedef unsigned long int fpu_control_t;

#if __WORDSIZE == 64

# define _FPU_GETCW(cw) __asm__ __volatile__ ("stx %%fsr,%0" : "=m" (*&cw))

# define _FPU_SETCW(cw) __asm__ __volatile__ ("ldx %0,%%fsr" : : "m" (*&cw))

#else

# define _FPU_GETCW(cw) __asm__ __volatile__ ("st %%fsr,%0" : "=m" (*&cw))

# define _FPU_SETCW(cw) __asm__ __volatile__ ("ld %0,%%fsr" : : "m" (*&cw))

#endif

/* Default control word set at startup.  */

extern fpu_control_t __fpu_control;

#endif	/* fpu_control.h */