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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/mn10300/kernel/fpu-nofpu-low.S
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/* MN10300 Low level FPU management operations

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 *

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 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.

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 * Written by David Howells ([email protected])

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 *

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 * This program is free software; you can redistribute it and/or

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 * modify it under the terms of the GNU General Public Licence

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 * as published by the Free Software Foundation; either version

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 * 2 of the Licence, or (at your option) any later version.

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 */

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#include <linux/linkage.h>

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#include <asm/cpu-regs.h>

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#include <asm/smp.h>

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#include <asm/thread_info.h>

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#include <asm/asm-offsets.h>

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#include <asm/frame.inc>

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###############################################################################

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#

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# void fpu_disabled(void)

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# - handle an exception due to the FPU being disabled

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#   when CONFIG_FPU is disabled

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#

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###############################################################################

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	.type	fpu_disabled,@function

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	.globl	fpu_disabled

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fpu_disabled:

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	add	-4,sp

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	SAVE_ALL

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	mov	-1,d0

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	mov	d0,(REG_ORIG_D0,fp)

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	and	~EPSW_NMID,epsw

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	mov	fp,d0

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	call	unexpected_fpu_exception[],0

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	jmp	ret_from_exception

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	.size	fpu_disabled,.-fpu_disabled

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