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_ */ 58