[ECOS] Congratulations to Fabrice --- Nice work with the i386 PC target.

["Rosimildo daSilva" <rosimildo at hotmail dot com>]

>From: Fabrice Gautier <Fabrice_Gautier@sdesigns.com>
>To: "Ecos-List (E-mail)" <ecos-discuss@sourceware.cygnus.com>
>Subject: [ECOS] [PC Target][Patch] Full Multi Thread debugging.
>Date: Thu, 21 Sep 2000 14:37:36 -0700
>
>Hi,
>
>Here is patch that's should provide full debugging multithread debug
>capabilities to the PC target.
>
>In fact there are two things:
>
>1/ New saved context:
>Currently, the context saved during thread switch and the one saved on a
>interrupt are different. The first thing this patch should do is to have 
>the
>same context saved. The context saved before a normal task switch(ie: not 
>an
>interrupt) will appears as if the thread were interrupted in
>Cyg_Scheduler::unlock_inner.
>I think this part of the patch is quite good. I didn't noticed any changes
>while using eCos with this part of the patch.
>
>2/ PC Stub modifications:
>In the current PC stub, the context reported to gdb was always the context
>of the interrupted task (ie: the current task)
>In order to have the stub report all the context, I had to modify the stub.
>This part of the patch is probably the less simple, so I enclosed my 
>changes
>in some #ifdef _FG_X. You will have to build eCos with this macro defined 
>in
>order to see the result.
>
>The results looks quite good: You should be able to see the call stack of
>each thread now. However, it is not perfect. For example, the position of
>the idle task is often at 0xffffffff and I suspect it may be the cause of
>some crashes. I ran some of the eCos tests with this patch and that seemed
>fine, but I think more in-depth tests could reveal some problems. I think
>that In most of my test the task switches are caused by the thread waiting
>for some lock, and maybe there is some problems occuring in time-sliced 
>task
>switch.
>
>I would be glad is someones have the time to try and look at this patch and
>give some feedback.
>
>Thanks


I'd like to contragulate Fabrice for his wonderful work on
the i386 PC target. I have been watching this list, and
he has fixed many problems with this target.

Congratulations, and keep uo with the good work Fabrice.

Rosimildo.






_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

Share information about yourself, create your own public profile at 
http://profiles.msn.com.