sys/arch/arm/include/fp.h

   1 /*      $NetBSD: fp.h,v 1.4 1997/10/14 09:20:13 mark Exp $      */
   2
   3 /*
   4  * Copyright (c) 1995 Mark Brinicombe.
   5  * Copyright (c) 1995 Brini.
   6  * All rights reserved.
   7  *
   8  * This code is derived from software written for Brini by Mark Brinicombe
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by Brini.
  21  * 4. The name of the company nor the name of the author may be used to
  22  *    endorse or promote products derived from this software without specific
  23  *    prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
  26  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  27  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  28  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  29  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  30  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  31  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  *
  37  * RiscBSD kernel project
  38  *
  39  * fp.h
  40  *
  41  * FP info
  42  *
  43  * Created      : 10/10/95
  44  */
  45
  46 #ifndef __ARM32_FP_H
  47 #define __ARM32_FP_H
  48
  49 /*
  50  * An extended precision floating point number
  51  */
  52
  53 typedef struct fp_extended_precision {
  54         u_int32_t fp_exponent;
  55         u_int32_t fp_mantissa_hi;
  56         u_int32_t fp_mantissa_lo;
  57 } fp_extended_precision_t;
  58
  59 typedef struct fp_extended_precision fp_reg_t;
  60
  61 /*
  62  * Information about the FPE-SP state that is stored in the pcb
  63  *
  64  * This needs to move and be hidden from userland.
  65  */
  66
  67 struct fpe_sp_state {
  68         unsigned int fp_flags;
  69         unsigned int fp_sr;
  70         unsigned int fp_cr;
  71         fp_reg_t fp_registers[16];
  72 };
  73
  74 /*
  75  * Type for a saved FP context, if we want to translate the context to a
  76  * user-readable form
  77  */
  78
  79 typedef struct {
  80         u_int32_t fpsr;
  81         fp_extended_precision_t regs[8];
  82 } fp_state_t;
  83
  84 #endif
  85
  86 /* End of fp.h */