RE: [ECOS] Startup problem

[Rycerz Roman-G11565 <roman dot rycerz at motorola dot com>]

Sorry I keep forgetting to include the environments

  * What target platform [processor architecture] -> Power PC  on a MPC5554
  * What tools are you using				  -> gcc 2.95.3-10, Insight 5.2, ecos config tool 2.11
  * What eCos configuration 				  -> I/O subsystem, Serial Device Drivers, eCos Kernel
  * Is this repeatable or random			  -> random in the sense that from 1 compile to the next it comes and goes


Roman



-----Original Message-----
From: Gary Thomas [mailto:gary@mlbassoc.com] 
Sent: Thursday, June 10, 2004 10:33 AM
To: Sven Rehfuss
Cc: Rycerz Roman-G11565; ecos-discuss@sources.redhat.com
Subject: Re: [ECOS] Startup problem


On Thu, 2004-06-10 at 09:23, Sven Rehfuss wrote:
> Hi,
> use a debugger and check the code. If the routines modify stack 
> variables before decrementing the stack pointer, it maybe is the same 
> problem I had. If it is the same problem, I can give you the solution.

Why not share this solution with us all?  After all, that's what this forum is for!

> 
> Regards,
>  Sven Rehfu?
> 
> 
> Am Do, den 10.06.2004 schrieb Rycerz Roman-G11565 um 17:08:
> > Hi
> >  
> > I have an intermittent problem.  When starting up the eCos kernel 
> > the call to "cyg_hal_invoke_constructors" sometimes fails with a 
> > segmentation violation. It seems to happening when the destructors 
> > are being called. in thread.cxx
> >  
> > its in the routine "~cyg_thread_remove_from_list", it seem to be 
> > working it way back thru a linked list assigning
> > prev = prev->list_next when it blows up prev is set to the contents of memory "0", location  a null ptr problem.
> >  
> > I know this is a quite vague description, and I may all wrong.. But 
> > does anyone have any ideas why this is happening ???

You've not told us much about your environment.  
  * What target platform [processor architecture]?
  * What tools are you using
  * What eCos configuration 
  * Is this repeatable or random

-- 
Gary Thomas <gary@mlbassoc.com>
MLB Associates

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