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Clean up panicf and introduce system_exception_wait to do further target tasks and wait for a button when an unrecoverable error has occurred (panic, UIE, etc.). Returning from that function should reboot or don't return from it. Move UIE and __div0 for ARM to its own file.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19716 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2009-01-08 10:15:32 +00:00
parent 32d9752dcc
commit 4ed78f5c72
18 changed files with 220 additions and 159 deletions
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58
firmware/system.c
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@ -18,16 +18,11 @@
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include "config.h"
#include <stdbool.h>
#include "lcd.h"
#include "font.h"
#include "system.h"
#include <stdio.h>
#include "kernel.h"
#include "thread.h"
#include "timer.h"
#include "inttypes.h"
#include "string.h"
#ifndef SIMULATOR
@ -226,54 +221,3 @@ bool detect_original_firmware(void)
return !(detect_flashed_ramimage() || detect_flashed_romimage());
}
#if defined(CPU_ARM)
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 UIE(unsigned int pc, unsigned int num) __attribute__((noreturn));
void 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();
while (1)
{
/* TODO: perhaps add button handling in here when we get a polling
driver some day.
*/
core_idle();
}
}
#ifndef STUB
/* Needs to be here or gcc won't find it */
void __div0(void) __attribute__((naked));
void __div0(void)
{
asm volatile (
"ldr r0, [sp] \r\n"
"mov r1, #3 \r\n"
"b UIE \r\n"
);
}
#endif
#endif /* CPU_ARM */