1/* MN10300 Low level FPU management operations
2 *
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11#include <linux/linkage.h>
12#include <asm/cpu-regs.h>
13#include <asm/smp.h>
14#include <asm/thread_info.h>
15#include <asm/asm-offsets.h>
16#include <asm/frame.inc>
17
18###############################################################################
19#
20# void fpu_disabled(void)
21# - handle an exception due to the FPU being disabled
22#   when CONFIG_FPU is disabled
23#
24###############################################################################
25	.type	fpu_disabled,@function
26	.globl	fpu_disabled
27fpu_disabled:
28	add	-4,sp
29	SAVE_ALL
30	mov	-1,d0
31	mov	d0,(REG_ORIG_D0,fp)
32
33	and	~EPSW_NMID,epsw
34
35	mov	fp,d0
36	call	unexpected_fpu_exception[],0
37	jmp	ret_from_exception
38
39	.size	fpu_disabled,.-fpu_disabled
40