/*	$NetBSD: fpu_machdep.c,v 1.1 2011/11/15 12:23:21 tsutsui Exp $	*/

/*-
 * Copyright (c) 1996 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Gordon W. Ross.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Floating Point Unit (MC68881/882/040) initialization.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: fpu_machdep.c,v 1.1 2011/11/15 12:23:21 tsutsui Exp $");

#include "opt_fpu_emulate.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <sys/kernel.h>
#include <sys/device.h>

#include <machine/psl.h>
#include <machine/cpu.h>
#include <machine/frame.h>

extern int fpu_type;
extern int *nofault;

static const char *fpu_descr[] = {
#ifdef	FPU_EMULATE
	[FPU_NONE] = " emulated ",
#else
	[FPU_NONE] = " no ",
#endif
	[FPU_68881] = " mc68881 ",
	[FPU_68882] = " mc68882 ",
	[FPU_68040] = "/",
	[FPU_68060] = "/",
	[FPU_UNKNOWN] = "??? "
};

const char *
fpu_describe(int type)
{
	int	maxtype = sizeof(fpu_descr)/sizeof(fpu_descr[0]) - 1;

	if ((type < 0) || (type > maxtype))
		type = 0;
	return fpu_descr[type];
}