RE: How to load and execute COFF file

["Stan Katz" <Stan dot Katz at ctc-control dot com>]

Hi Toralf,

On Friday, September 12, 2003 3:42 PM Toralf wrote
>>If the target runs gdbstubs, then you could download and launch the 
>> COFF file with gdb.
>It doesn't. It runs nothing as all, really, except for a very simple 
>"bug rom" routine. That routine may be instructed via an externally 
>generated interrupt to jump to a certain memory location, though, 
>typically after the code has been written to the unit's memory by 
>another board (it has dual-port RAM.)
>
>Essentially what I'm asking is how do I find the jump address, and do I 
>have to do special relocation operations or anything before entering it?

I have essentially the same problem with a SH target and what I have been doing is
using objcopy to generate an S-Record file from the coff (or elf) file. I have a
simple loader that can get the S-Record file into RAM of Flash via a serial port
(or I can use a programmer for production) and I use the S7/8/9 record to get the
start address (which one depends on the address size).

If you want I can send you my S record loader code and you can add it to your
bug rom.

Stan Katz

------
Want more information?  See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/
Want to unsubscribe? Send a note to crossgcc-unsubscribe@sources.redhat.com