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Annotation of sys/arch/sh/include/fpu.h, Revision 1.1.1.1

1.1       nbrk        1: #ifndef _SH_FPU_H_
                      2: /*     $OpenBSD: fpu.h,v 1.1 2006/11/05 18:57:20 miod Exp $    */
                      3: /*
                      4:  * Copyright (c) 2006, Miodrag Vallat
                      5:  *
                      6:  * Redistribution and use in source and binary forms, with or without
                      7:  * modification, are permitted provided that the following conditions
                      8:  * are met:
                      9:  * 1. Redistributions of source code must retain the above copyright
                     10:  *    notice, this list of conditions and the following disclaimer.
                     11:  * 2. Redistributions in binary form must reproduce the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer in the
                     13:  *    documentation and/or other materials provided with the distribution.
                     14:  *
                     15:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     16:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
                     17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
                     18:  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
                     19:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
                     20:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
                     21:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     22:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
                     23:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
                     24:  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
                     25:  * POSSIBILITY OF SUCH DAMAGE.
                     26:  */
                     27:
                     28: #define        _SH_FPU_H_
                     29:
                     30: /*
                     31:  * SH4{,a} FPU definitions
                     32:  */
                     33:
                     34: /* FPSCR bits */
                     35:
                     36: #define        FPSCR_RB                0x00200000      /* register bank */
                     37: #define        FPSCR_SZ                0x00100000      /* transfer size mode */
                     38: #define        FPSCR_PR                0x00080000      /* precision mode */
                     39: #define        FPSCR_DN                0x00040000      /* denormalization mode */
                     40: #define        FPSCR_CAUSE_MASK        0x0003f000      /* exception cause mask */
                     41: #define        FPSCR_CAUSE_SHIFT       12
                     42: #define        FPSCR_ENABLE_MASK       0x00000f80      /* exception enable mask */
                     43: #define        FPSCR_ENABLE_SHIFT      7
                     44: #define        FPSCR_FLAG_MASK         0x0000007c      /* exception sticky mask */
                     45: #define        FPSCR_FLAG_SHIFT        2
                     46: #define        FPSCR_ROUNDING_MASK     0x00000003      /* rounding mask */
                     47:
                     48: /* FPSCR exception bits */
                     49:
                     50: #define        FPEXC_E                 0x20    /* FPU Error */
                     51: #define        FPEXC_V                 0x10    /* invalid operation */
                     52: #define        FPEXC_Z                 0x08    /* divide by zero */
                     53: #define        FPEXC_O                 0x04    /* overflow */
                     54: #define        FPEXC_U                 0x02    /* underflow */
                     55: #define        FPEXC_I                 0x01    /* inexact */
                     56:
                     57: #endif /* _SH_FPU_H_ */