| /* |
| * 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 |