/* * 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