1/*
 2 *  Kevin D. Kissell, kevink@mips and Carsten Langgaard, carstenl@mips.com
 3 *  Copyright (C) 2000 MIPS Technologies, Inc.	All rights reserved.
 4 *
 5 *  This program is free software; you can distribute it and/or modify it
 6 *  under the terms of the GNU General Public License (Version 2) as
 7 *  published by the Free Software Foundation.
 8 *
 9 *  This program is distributed in the hope it will be useful, but WITHOUT
10 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 *  for more details.
13 *
14 *  You should have received a copy of the GNU General Public License along
15 *  with this program; if not, write to the Free Software Foundation, Inc.,
16 *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
17 *
18 * Routines corresponding to Linux kernel FP context
19 * manipulation primitives for the Algorithmics MIPS
20 * FPU Emulator
21 */
22#include <linux/sched.h>
23#include <asm/processor.h>
24#include <asm/signal.h>
25#include <asm/uaccess.h>
26
27#include <asm/fpu.h>
28#include <asm/fpu_emulator.h>
29
30#define SIGNALLING_NAN 0x7ff800007ff80000LL
31
32void fpu_emulator_init_fpu(void)
33{
34	static int first = 1;
35	int i;
36
37	if (first) {
38		first = 0;
39		printk("Algorithmics/MIPS FPU Emulator v1.5\n");
40	}
41
42	current->thread.fpu.fcr31 = 0;
43	for (i = 0; i < 32; i++)
44		set_fpr64(&current->thread.fpu.fpr[i], 0, SIGNALLING_NAN);
45}