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Annotation of sys/arch/arm/include/fp.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: fp.h,v 1.1 2004/02/01 05:09:49 drahn Exp $    */
                      2: /*     $NetBSD: fp.h,v 1.1 2001/01/10 19:02:06 bjh21 Exp $     */
                      3:
                      4: /*
                      5:  * Copyright (c) 1995 Mark Brinicombe.
                      6:  * Copyright (c) 1995 Brini.
                      7:  * All rights reserved.
                      8:  *
                      9:  * This code is derived from software written for Brini by Mark Brinicombe
                     10:  *
                     11:  * Redistribution and use in source and binary forms, with or without
                     12:  * modification, are permitted provided that the following conditions
                     13:  * are met:
                     14:  * 1. Redistributions of source code must retain the above copyright
                     15:  *    notice, this list of conditions and the following disclaimer.
                     16:  * 2. Redistributions in binary form must reproduce the above copyright
                     17:  *    notice, this list of conditions and the following disclaimer in the
                     18:  *    documentation and/or other materials provided with the distribution.
                     19:  * 3. All advertising materials mentioning features or use of this software
                     20:  *    must display the following acknowledgement:
                     21:  *     This product includes software developed by Brini.
                     22:  * 4. The name of the company nor the name of the author may be used to
                     23:  *    endorse or promote products derived from this software without specific
                     24:  *    prior written permission.
                     25:  *
                     26:  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
                     27:  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
                     28:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     29:  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
                     30:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
                     31:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
                     32:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     33:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     34:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     35:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     36:  * SUCH DAMAGE.
                     37:  *
                     38:  * RiscBSD kernel project
                     39:  *
                     40:  * fp.h
                     41:  *
                     42:  * FP info
                     43:  *
                     44:  * Created      : 10/10/95
                     45:  */
                     46:
                     47: #ifndef __ARM32_FP_H
                     48: #define __ARM32_FP_H
                     49:
                     50: /*
                     51:  * An extended precision floating point number
                     52:  */
                     53:
                     54: typedef struct fp_extended_precision {
                     55:        u_int32_t fp_exponent;
                     56:        u_int32_t fp_mantissa_hi;
                     57:        u_int32_t fp_mantissa_lo;
                     58: } fp_extended_precision_t;
                     59:
                     60: typedef struct fp_extended_precision fp_reg_t;
                     61:
                     62: /*
                     63:  * Information about the FPE-SP state that is stored in the pcb
                     64:  *
                     65:  * This needs to move and be hidden from userland.
                     66:  */
                     67:
                     68: struct fpe_sp_state {
                     69:        unsigned int fp_flags;
                     70:        unsigned int fp_sr;
                     71:        unsigned int fp_cr;
                     72:        fp_reg_t fp_registers[16];
                     73: };
                     74:
                     75: /*
                     76:  * Type for a saved FP context, if we want to translate the context to a
                     77:  * user-readable form
                     78:  */
                     79:
                     80: typedef struct {
                     81:        u_int32_t fpsr;
                     82:        fp_extended_precision_t regs[8];
                     83: } fp_state_t;
                     84:
                     85: #endif
                     86:
                     87: /* End of fp.h */