On 4 Jan 2006, 80.manish@gmail.com wrote:

> the image is working fine but after some time of running it gives
> error like.........

> page fault:
> program counter : 0x001a8a90
> Status Register : 0x00010246
> error code : 0x00000000
> Task : 0xa9a31d0 "INTRANET"

> where intranet is user defined task in my application code.

Boot the system again and when things are loaded,

-> lkAddr 0x001a8a90

This will give you routines around where the page fault occurred.
Usually this is a bad pointer. "static" functions will not show up.
If you see a routine in a file with "external linkage", you can
calculate the exact line number. You have to produce an assembler
listing for the module. Get a delta between a routine from lkAddr and
the reported PC. Apply that delta to the assembler listing and you
should have the actual line of code.

You can try to reproduce this by loading and running in a debugger.
Even if the crash totally resets the system, when you reload in an
identical manner, the same code will be at the same address and you can
inspect the code at the address before the exception...

There are many ways to find this problem if it is repeatable.
However, your mystery may "thicken" if the PC is not really the
offending instruction. It may be that you have corrupted memory
somewhere else and the PC is just manifesting from the corruption.
Then you have to use other techniques.

hth,
Bill Pringlemeir.

--
Life, don't talk to me about life. - Marvin the robot
vxWorks FAQ, "http://www.xs4all.nl/~borkhuis/vxworks/vxworks.html"