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