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