creating a core dump

[Till Straumann]

sebastian ssmoller wrote:

>hi,
>
>(...)
>  
>
>>>>If you have another VME board use your secondary board
>>>>to grab the target board's memory over the VME backplane
>>>>and ship it to the host e.g., via network. This is faster
>>>>and in many cases you can even obtain a coredump of a
>>>>crashed board which is very desirable.
>>>>        
>>>>
>(...)
>
>unfortunatelly i doesnt know anything about this tech., how it should
>work and what i need to do to get this working. 
>  
>
You definitely need a second VME board. Assuming that you have another 
MVME167, you
should set your target board up (using the firmware) so it makes its 
memory accessible
on the VME bus. Probably it is already configured, all you need to do is 
find out the correct
VME address.

On the second board (again using the firmware) you want to make sure 
that you can
access the VME bus. You should then be able to see the target/first 
board's memory
from the secondary board's firmware/monitor through the VME bus. It's as 
simple as that.
Once you can access the target's memory from the secondary board, you 
should be able
to use firmware commands (or even an operating system, such as RTEMS :-) 
running
a simple networking app.) to suck out the target memory contents and 
ship them to
a host.

>could u pls point me to some docs about this stuff ?
>
Firmware manual.

>
>(...)
>  
>
>>distributed on the 'rtems evaluation CD'. It's in the
>>tool directory [linux host]
>>
>>/opt/rtems4.6.0CD/host/i386_linux24/bin/m68k-rtems-gencore
>>
>>the source is under
>>
>>/opt/rtems4.6.0CD/src/ssrlApps/cexp/gencore.c
>>
>>    
>>
>
>cause i have no rtems eval. CD
>
CD image available at http://www.slac.stanford.edu/~strauman/rtems/ 
under 'software'

> i wonder if i could download this tool
>(src & bin) somewhere ?
>
Funny, you're another person these days who doesn't seem to look at 
attachments.
-- I believe I mailed the tool to you already (src only).

> - i searched the rtems homepage but havnt found
>anything yet ...
>
AFAIK it's not on the RTEMS page since it is just one of my personal 
hacks. It's
on the CD image, though...

HTH
-- Till

>
>(...)
>
>THX
>regards,
>seb
>
>
>  
>