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Core Development Tools/Discussion/General/gdb error: file format not recognized /List of Posts
Forum Topic - gdb error: file format not recognized : (9 Items)
   
Update
Preeti Sharma
11/09/2007 2:48 PM
post2549
gdb error: file format not recognized   
I get the above error on the corefile createdt. This happens when I change the dumper.c to include MAP_ELF (along with 
MAP_STACK) to be included in the corefile

"file" on the corefile gives me a data file 

Any pointers why that would be the case; somehow including MAP_ELF makes gdb believe this is not a corefile ?
Colin Burgess(deleted)
11/09/2007 2:53 PM
post2550
Re: gdb error: file format not recognized   
file corefile should show it being an ELF file - you must be messing up 
your corefile generation.

try ntoarm-readelf -l corefile - does that work?

Preeti Sharma wrote:
>
> I get the above error on the corefile createdt. This happens when I 
> change the dumper.c to include MAP_ELF (along with MAP_STACK) to be 
> included in the corefile
>
> "file" on the corefile gives me a data file
>
> Any pointers why that would be the case; somehow including MAP_ELF 
> makes gdb believe this is not a corefile ?
>
>
>
> _______________________________________________
> General
> http://community.qnx.com/sf/go/post2549
>

-- 
cburgess@qnx.com
Preeti Sharma
11/09/2007 2:57 PM
post2551
Re: gdb error: file format not recognized   
No...says : 

" Not an elf file it has the wrong magic bytes at the start" 

Thanks 

Preeti
Colin Burgess(deleted)
11/09/2007 3:45 PM
post2553
Re: gdb error: file format not recognized   
This diff seems to work.  Note that i had to exclude ldd_infos that 
conflicted with the MAP_ELF sections I was now including.

Preeti Sharma wrote:
>
> No...says :
>
> " Not an elf file it has the wrong magic bytes at the start"
>
> Thanks
>
> Preeti
>
> _______________________________________________
> General
> http://community.qnx.com/sf/go/post2551
>

-- 
cburgess@qnx.com
Attachment: Text dumper.diff 1.63 KB
Preeti Sharma
11/09/2007 4:06 PM
post2554
Re: gdb error: file format not recognized   
hmm makes sense ...let me try it ...

Preeti
Preeti Sharma
11/12/2007 1:26 PM
post2571
Re: gdb error: file format not recognized   
Hello Colin,

To be able to see globals with the -m option should I not have the check for MAP_ELF before dump_stack_memory instead of
 dump_memory....

Thanks 

Preeti.
Colin Burgess(deleted)
11/12/2007 1:28 PM
post2572
Re: gdb error: file format not recognized   
No, MAP_STACK will never also be MAP_ELF - MAP_ELF is only used for 
mapping in the elf segments from your executable/shared libs.

Preeti Sharma wrote:
>
> Hello Colin,
>
> To be able to see globals with the -m option should I not have the 
> check for MAP_ELF before dump_stack_memory instead of dump_memory....
>
> Thanks
>
> Preeti.
>
>
>
> _______________________________________________
> General
> http://community.qnx.com/sf/go/post2571
>

-- 
cburgess@qnx.com
Preeti Sharma
11/15/2007 8:08 PM
post2668
Re: gdb error: file format not recognized   
Sorry for the late response .....
Yes gdb does not spew the  file format error any more.

But curiously enough I have no bt when I run with -m option.
I am looking into it... I have an older version of dumper than the one you specified diffs .... checking what else is 
done differently ....

but what I want is to be able to see globals with the -m option specified ...

Preeti
Preeti Sharma
12/08/2007 4:39 PM
post3465
Re: gdb error: file format not recognized   
MAP_ELF changes seem to work; with the -m option I can see the globals...

Thanks for taking the time ....

Preeti

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