1/* $NetBSD$ */ 2 3/*- 4 * Copyright (c) 1996 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Gordon W. Ross. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33__KERNEL_RCSID(0, "$NetBSD$"); 34 35#include "opt_fpu_emulate.h" 36 37/* 38 * Floating Point Unit (MC68881/882/040) initialization. 39 */ 40 41#include <sys/param.h> 42 43#include <machine/cpu.h> 44#include <machine/frame.h> 45 46/* 47 * FPU type; emulator uses FPU_NONE 48 */ 49 50extern label_t *nofault; 51 52static const char *fpu_descr[] = { 53#ifdef FPU_EMULATE 54 [FPU_NONE] = "emulator", 55#else 56 [FPU_NONE] = "no math support", 57#endif 58 [FPU_68881] = "mc68881", 59 [FPU_68882] = "mc68882", 60 [FPU_68040] = "mc68040", 61 [FPU_68060] = "mc68060", 62 [FPU_UNKNOWN] = "unknown" 63}; 64 65void 66initfpu(void) 67{ 68 const char *descr; 69 70 fputype = fpu_probe(); 71 72 /* Generate a reference FPU idle frame. */ 73 if (fputype != FPU_NONE) 74 m68k_make_fpu_idle_frame(); 75 76 if ((0 <= fputype) && (fputype <= 3)) 77 descr = fpu_descr[fputype]; 78 else 79 descr = "unknown type"; 80 81 printf("fpu: %s\n", descr); 82} 83