Re: [avr-gcc-list] ElfCoff Error parsing symbol

[Valéry Florimond \(Thought Technology Ltd\)]

Dear Flavio,

I use your elftocoff software to be able to use AVR Studio (v4.0) with the
JTAG ICE for debugging my firmware (the target is an atmega128). My firmware
is pretty big, around 32k and elftocoff generates a wrong coff file when the
firmware is big. I tried with a small one and it works fine. In the buggy
coff file, the first 16k part looks fine. But the next 16k seems to be a
copy of this first 16k. I tried to debug your software but unfortunately I
didn't succeed. I don't figure out how it works.
But I localized where the problem is: in the function int convsym (void
*elf,void *coff), in  the loop :

for(i=0;;i++){
    if ((sym = (sym_t *)dirsym (elf,i)) == 0)
   break ;
  if (sym->type > (sizeof (TypeFunc)/sizeof (void (*) ())))
   traperr (&ctx,1) ;
  TypeFunc [sym->type] (&ctx,sym) ;
 }

when the windows function _realloc is called, an user breakpoint occurs.
That happens only if  the elf file is too big ( I do not know what the size
limit is). I hope that can help, it would be very nice if you could find
time to fix that :) !

thanks,

Valery


----- Original Message -----
From: "Flavio Gobber" <address@hidden>
To: <address@hidden>; "Maurizio Ferraris" <address@hidden>
Sent: Wednesday, June 19, 2002 3:14 PM
Subject: Re: [avr-gcc-list] ElfCoff Error parsing symbol


>
> Hy,
> I'm Flavio Gobber and I written the elfcoff utility. I sent the utility
with
> the source code to AvrFreaks.net, now I'm involved in a completly
different
> task (Motor control and Hardware development) then I can't maintain the
> tools. I think that the problem is that the conveerter don't reconize the
> Key 'G' or better 'B'. In any case I promise that if I'll have some time
> I'll look to that.
> By
> Flavio
> ----- Original Message -----
> From: "Maurizio Ferraris" <address@hidden>
> To: <address@hidden>
> Sent: Tuesday, June 18, 2002 11:53 AM
> Subject: [avr-gcc-list] ElfCoff Error parsing symbol
>
>
> > Hi all,
> > I am using Tony & Mark avrgcc128_rc3
> > I recompiled my code successfully, but the elfcoff gives me this error:
> > -------------------------
> > elfcoff Prove.elf  Prove.cof Prove.sym
> >   : 826
> >    : 678
> >     : 563
> >      : 387
> > Error on parsing symbol      137 -> Type : 204x Desc :
data:G(1,1)=B(0,11)
> > Ended
> > -------------------------
> > After some tests I ended with this simple test case:
> >
> > volatile unsigned char data;
> > void main(void)
> > {
> > }
> >
> > That still gives the error above. Simply removing the 'volatile' fixes
the
> > problem.
> > Anyone is aware of problems with volatile globals?
> > (Unfortunately they are quite usefull when used also by interrupt
> routines)
> > Any fix or workaround?
> > Thanks.
> > Mau.
> >
> > _____________________________________________________________
> > Maurizio Ferraris                mailto:address@hidden
> > Via Borgonuovo 27                mailto:address@hidden
> > 10040 GIVOLETTO TO ITALY         http://www.studioferraris.it
> > Public key: http://www.studioferraris.it/Files/Maurizio.asc
> >
> > avr-gcc-list at http://avr1.org
> >
> avr-gcc-list at http://avr1.org
>

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