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Re: does ecos support generating core files or kernelcrashdumps?
- From: Gary Thomas <gary at mlbassoc dot com>
- To: Reinhard JESSICH <Reinhard dot JESSICH at frequentis dot com>
- Cc: adrian at atheros dot com, ecos-discuss at sources dot redhat dot com
- Date: 16 Oct 2003 05:54:42 -0600
- Subject: Re: [ECOS] does ecos support generating core files or kernelcrashdumps?
- Organization: MLB Associates
- References: <sf8e6474.098@mail.frequentis.com>
On Thu, 2003-10-16 at 01:27, Reinhard JESSICH wrote:
> Hello
>
> We had similar needs for our development.
> As you know we have implemented a process model and memory protection
> for the PowerPC. We also implemented the first step of a core dump feature.
>
> If an exception occures (dived by zero, illegal read/write, assert, ... ), we write
> the exception text, the thread, the registers, a stackdump of the running thread
> and if this is not possible a stackdump of the interrupt stack. The stackdump is
> not a simple memory dump, but the context of each called function. This allowes
> us to see the call graph and the exact position where the exception occures very
> easily. We write the whole information to an unused memory, which is not erased
> during reset. We can store as much core dumps as memory is available.
> After reset we can read the core's via telnet or serail line.
>
> We plan to store the complete context of the thread and its memory in
> compressed form. This allowes us to see the content of variables in gdb. This would
> be a real core feature. If it is too big for the unused memory, we can store it on a
> flash.
>
> We have submitted a patch for our process extension, but EcosCentric does not
Just a fine point - eCosCentric [itself] has nothing to do with this
decision. These choices are made by the eCos maintainers, who
themselves [hopefully] represent the eCos community as a whole.
> accept it. If you are interrested, search in the archives for memory protection.
> The patch was submitted by my colleague Thomas Binder.
> You will find the core code there. In the meantime we have continued the
> development, but this parts should be still the same.
>
> Best regards,
> Reinhard
>
>
> --
> Ing. Reinhard Jessich Phone: +43/1/81150/2395
> Software Design Fax: +43/1/81150/3169
> Frequentis Nachrichtentechnik GmbH A-1120 Wien, Spittelbreitengasse 34
> http://www.frequentis.com eMail: reinhard.jessich@frequentis.com
--
Gary Thomas <gary@mlbassoc.com>
MLB Associates
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