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