NULL pointer Exception

Not every DSP has that capability.  Which device are you using?

Hi,

I'm working on C6678.

I was able to now get an NULL pointer exception and it routes to the default exception handler which prints the CORE Pac register values on CCS debugger console.

But I now need to hook in my own exception handler. It would be good if someone helps me out to do the same.

Regards,

Amy

Hi Amy,

SYS/BIOS provides 'ti.sysbios.family.c64p.Exception'.  I think you can register exception handlers as hook.

Regards,
Atsushi

Hi Atsushi,

Thanks for your reply. Can you send me some example code/cfg file. I tried, but could not build an image with my own exception handler.

Regards,

Amy

Hi Amy,

Here's some example code for you.

For your *.cfg file:

var Exc = xdc.useModule('ti.sysbios.family.c64p.Exception');

Exc.exceptionHook = '&myExceptionHook';
Exc.internalHook = '&myInternalHook';

Then in your C code:

Void myExceptionHook(Void)
{
    System_printf("myExceptionHook:\n");
}

Void myInternalHook(Void)
{
...

Steve

Hi Steven,

I tried implementing with your suggestions. But I'm getting an linker error. It says 'myExceptionHook' and 'myInternalHook' are undefined. Where am I suppose to define these functions?

Regards,

Amy