1 /* $NetBSD: fpu.h,v 1.6 2002/05/19 16:55:43 jdolecek Exp $ */ 2 3 /*- 4 * Copyright (C) 1996 Wolfgang Solfrank. 5 * Copyright (C) 1996 TooLs GmbH. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by TooLs GmbH. 19 * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 #ifndef _MACHINE_FPU_H_ 34 #define _MACHINE_FPU_H_ 35 36 #define FPSCR_FX 0x80000000 /* Exception Summary */ 37 #define FPSCR_FEX 0x40000000 /* Enabled Exception Summary */ 38 #define FPSCR_VX 0x20000000 /* Invalid Operation Exception Summary */ 39 #define FPSCR_OX 0x10000000 /* Overflow Exception */ 40 #define FPSCR_UX 0x08000000 /* Undrflow Exception */ 41 #define FPSCR_ZX 0x04000000 /* Zero Divide Exception */ 42 #define FPSCR_XX 0x02000000 /* Inexact Exception */ 43 #define FPSCR_VXSNAN 0x01000000 /* Invalid Op (NAN) */ 44 #define FPSCR_VXISI 0x00800000 /* Invalid Op (INF-INF) */ 45 #define FPSCR_VXIDI 0x00400000 /* Invalid Op (INF/INF) */ 46 #define FPSCR_VXZDZ 0x00200000 /* Invalid Op (0/0) */ 47 #define FPSCR_VXIMZ 0x00100000 /* Invalid Op (INFx0) */ 48 #define FPSCR_VXVC 0x00080000 /* Invalid Compare Op */ 49 #define FPSCR_FR 0x00040000 /* Fraction Rounded */ 50 #define FPSCR_FI 0x00020000 /* Fraction Inexact */ 51 #define FPSCR_FPRF 0x0001f000 52 #define FPSCR_C 0x00010000 /* FP Class Descriptor */ 53 #define FPSCR_FPCC 0x0000f000 54 #define FPSCR_FL 0x00008000 /* < */ 55 #define FPSCR_FG 0x00004000 /* > */ 56 #define FPSCR_FE 0x00002000 /* == */ 57 #define FPSCR_FU 0x00001000 /* unordered */ 58 #define FPSCR_VXSOFT 0x00000400 /* Software Invalid Exception */ 59 #define FPSCR_VXSQRT 0x00000200 /* Invalid Sqrt Exception */ 60 #define FPSCR_VXCVI 0x00000100 /* Invalid Op Integer Cvt Exception */ 61 #define FPSCR_VE 0x00000080 /* Invalid Op Exception Enable */ 62 #define FPSCR_OE 0x00000040 /* Overflow Exception Enable */ 63 #define FPSCR_UE 0x00000020 /* Underflow Exception Enable */ 64 #define FPSCR_ZE 0x00000010 /* Zero Divide Exception Enable */ 65 #define FPSCR_XE 0x00000008 /* Inexact Exception Enable */ 66 #define FPSCR_NI 0x00000004 /* Non-IEEE Mode Enable */ 67 #define FPSCR_RN 0x00000003 68 69 #ifdef _KERNEL 70 71 #if defined(_KERNEL_OPT) 72 #include "opt_ppcarch.h" 73 #endif 74 75 /* List of PowerPC architectures that support FPUs. */ 76 #if defined(PPC_MPC6XX) 77 #define PPC_HAVE_FPU 78 79 void enable_fpu(struct proc *); 80 void save_fpu(struct proc *); 81 void save_fpu_proc(struct proc *); 82 #endif /* PPC_HAVE_FPU */ 83 #endif /* _KERNEL */ 84 85 #endif /* _MACHINE_FPU_H_ */ 86