how patching

Олег Мороз oleg.moroz at mcc.vniiem.ru
Sat Feb 14 09:29:55 UTC 2015


I've tried to do that on a flying spacecraft. Spacecraft on board 
computer's RTOS was a vxworks but in my case it does not matters. I've 
did it in most easiest way. I've got an original binary file (with which 
SC was launched) and a modified (with some bugfixes). Then i'm just 
compare it byte by byte and collects diffs like:

0x01234 0A 12 13 14 15
0x03456 FF FA FB FC FE

and i know that my binary file is located in OBC RAM started from 
0x2010000 then i'm just add this start address to diff file address and 
load to spacecraft. Works like a magic, but your could fix some very 
simple bugs because original and "fixed" file should have the same sizes.
13.02.2015 19:41, Daniel Gutson пишет:
> Just to clarify: the ability to provide a new piece of binary
> corresponding to a driver and replace the existing one.
> Have anybody tried this before?
>
> Thanks!
>
>     Daniel.
>
> On Fri, Feb 13, 2015 at 12:27 PM, Daniel Gutson
> <daniel.gutson at tallertechnologies.com> wrote:
>> Hi,
>>
>>     is there any current experience / support with hot patching? E.g.
>> patching a driver while the whole system is running.
>>
>> Thanks,
>>
>>     Daniel.
>>
>> --
>>
>> Daniel F. Gutson
>> Chief Engineering Officer, SPD
>>
>> San Lorenzo 47, 3rd Floor, Office 5
>> Córdoba, Argentina
>>
>> Phone:   +54 351 4217888 / +54 351 4218211
>> Skype:    dgutson
>> LinkedIn: http://ar.linkedin.com/in/danielgutson
>
>



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