40 lines
1.1 KiB
ArmAsm
40 lines
1.1 KiB
ArmAsm
|
/* MN10300 Low level FPU management operations
|
||
|
|
*
|
||
|
|
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
|
||
|
|
* Written by David Howells (dhowells@redhat.com)
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public Licence
|
||
|
|
* as published by the Free Software Foundation; either version
|
||
|
|
* 2 of the Licence, or (at your option) any later version.
|
||
|
|
*/
|
||
|
|
#include <linux/linkage.h>
|
||
|
|
#include <asm/cpu-regs.h>
|
||
|
|
#include <asm/smp.h>
|
||
|
|
#include <asm/thread_info.h>
|
||
|
|
#include <asm/asm-offsets.h>
|
||
|
|
#include <asm/frame.inc>
|
||
|
|
|
||
|
|
###############################################################################
|
||
|
|
#
|
||
|
|
# void fpu_disabled(void)
|
||
|
|
# - handle an exception due to the FPU being disabled
|
||
|
|
# when CONFIG_FPU is disabled
|
||
|
|
#
|
||
|
|
###############################################################################
|
||
|
|
.type fpu_disabled,@function
|
||
|
|
.globl fpu_disabled
|
||
|
|
fpu_disabled:
|
||
|
|
add -4,sp
|
||
|
|
SAVE_ALL
|
||
|
|
mov -1,d0
|
||
|
|
mov d0,(REG_ORIG_D0,fp)
|
||
|
|
|
||
|
|
and ~EPSW_NMID,epsw
|
||
|
|
|
||
|
|
mov fp,d0
|
||
|
|
call unexpected_fpu_exception[],0
|
||
|
|
jmp ret_from_exception
|
||
|
|
|
||
|
|
.size fpu_disabled,.-fpu_disabled
|