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/*
* Copyright (C) 2004-2006 Atmel Corporation
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <asm/sysreg.h>
#include <asm/ptrace.h>
.section .text.exception,"ax"
.global _evba
.type _evba,@function
.align 10
_evba:
.irp x,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16
.align 2
rjmp unknown_exception
.endr
.global timer_interrupt_handler
.type timer_interrupt_handler,@function
.align 2
timer_interrupt_handler:
/*
* Increment timer_overflow and re-write COMPARE with 0xffffffff.
*
* We're running at interrupt level 3, so we don't need to save
* r8-r12 or lr to the stack.
*/
mov r8, lo(timer_overflow)
orh r8, hi(timer_overflow)
ld.w r9, r8[0]
mov r10, -1
mtsr SYSREG_COMPARE, r10
sub r9, -1
st.w r8[0], r9
rete
.type unknown_exception, @function
unknown_exception:
pushm r0-r12
sub r8, sp, REG_R12 - REG_R0 - 4
mov r9, lr
mfsr r10, SYSREG_RAR_EX
mfsr r11, SYSREG_RSR_EX
pushm r8-r11
mfsr r12, SYSREG_ECR
mov r11, sp
rcall do_unknown_exception
1: rjmp 1b
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