67 lines
2 KiB
C
67 lines
2 KiB
C
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2006 by Thom Johansen
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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
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "system.h"
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#include <stdio.h>
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#include "lcd.h"
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#include "font.h"
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static const char* const uiename[] = {
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"Undefined instruction",
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"Prefetch abort",
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"Data abort",
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"Divide by zero"
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};
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/* Unexpected Interrupt or Exception handler. Currently only deals with
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exceptions, but will deal with interrupts later.
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*/
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void __attribute__((noreturn)) UIE(unsigned int pc, unsigned int num)
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{
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char str[32];
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lcd_clear_display();
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#ifdef HAVE_LCD_BITMAP
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lcd_setfont(FONT_SYSFIXED);
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#endif
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lcd_puts(0, 0, uiename[num]);
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snprintf(str, sizeof(str), "at %08x" IF_COP(" (%d)"), pc
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IF_COP(, CURRENT_CORE));
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lcd_puts(0, 1, str);
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lcd_update();
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disable_interrupt(IRQ_FIQ_STATUS);
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system_exception_wait(); /* If this returns, try to reboot */
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system_reboot();
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while (1); /* halt */
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}
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/* Needs to be here or gcc won't find it */
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void __attribute__((naked)) __div0(void)
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{
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asm volatile (
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"ldr r0, [sp] \r\n"
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"mov r1, #3 \r\n"
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"b UIE \r\n"
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);
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}
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