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Ingenic Jz4740: add extended exception debug reporting option

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21183 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Maurus Cuelenaere 2009-06-03 16:25:54 +00:00
parent a0c4b8bffb
commit 63bc7c9009
1 changed files with 36 additions and 1 deletions
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37
firmware/target/mips/ingenic_jz47xx/system-jz4740.c
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@ -27,6 +27,13 @@
#include "system.h"
#include "kernel.h"
#define EXTENDED_EXCEPTION_DESC 0
#if EXTENDED_EXCEPTION_DESC
#include "font.h"
#include "lcd.h"
#include "sprintf.h"
#endif
#define NUM_DMA 6
#define NUM_GPIO 128
#define IRQ_MAX (IRQ_GPIO_0 + NUM_GPIO)
@ -243,7 +250,35 @@ static char* parse_exception(unsigned int cause)
void exception_handler(void* stack_ptr, unsigned int cause, unsigned int epc)
{
#if EXTENDED_EXCEPTION_DESC
(void)epc;
/* Depends on crt0.S ! */
char buffer[LCD_WIDTH/SYSFONT_WIDTH];
char *registers[] = { "ra", "fp", "gp", "t9", "t8", "s7", "s6", "s5", "s4",
"s3", "s2", "s1", "s0", "t7", "t6", "t5", "t4", "t3",
"t2", "t1", "t0", "a3", "a2", "a1", "a0", "v1", "v0",
"$1", "LO", "HI", "STATUS", "EPC" };
int i;
lcd_clear_display();
lcd_setfont(FONT_SYSFIXED);
snprintf(buffer, sizeof(buffer), "0x%08x at 0x%08x", read_c0_badvaddr(), epc);
lcd_puts(0, 0, parse_exception(cause));
lcd_puts(0, 1, buffer);
for(i=0; i< 0x80/4; i+=2)
{
unsigned int* ptr = (unsigned int*)(stack_ptr + i*4);
snprintf(buffer, sizeof(buffer), "%s: 0x%08x %s: 0x%08x", registers[i], *ptr, registers[i+1], *(ptr+1));
lcd_puts(0, 3 + i/2, buffer);
}
lcd_update();
system_exception_wait();
#else
panicf("Exception occurred: %s [0x%08x] at 0x%08x (stack at 0x%08x)", parse_exception(cause), read_c0_badvaddr(), epc, (unsigned int)stack_ptr);
#endif
}
void tlb_refill_handler(void)
@ -507,7 +542,7 @@ void system_exception_wait(void)
/* check for power button without including any .h file */
while (1)
{
if( (~(*(volatile unsigned int *)(0xB0010300))) & (1 << 29) )
if( ~REG_GPIO_PXPIN(3) & (1 << 29) )
break;
}
}