Dwarf Error: Could not find abbrev number 116.

Dwarf Error: Could not find abbrev number 116.

[kas turi]

Hi
  I am trying to debug loadable modules on 8260 board.
I am using GDB to debug the module. The loadable
module say x.o has two object files a.o and b.o. x.o
is generated as follows:

powerpc-linux-ld -r -o x.o a.o b.o

I run the linux on the target. On the host machine I
run GDB and connect to the target. In the target I
load the loadable module using insmod utility:

insmod -m x.o

insmod now prints the starting text addr, bss addr,
rodata sections and it starts running my module. Now
from the gdb I try to load x.o using following command

add-symbol-file x.o <text-addr> -s <rodata> -s<bss>.

When I run the above command in GDB I get the
following error:
Dwarf Error: Could not find abbrev number 116. 

Any idea what could be the problem. I am using the
latest GDB 5.2.1. Thanks in advance






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Re: Dwarf Error: Could not find abbrev number 116.

[Jim Blandy]

kas turi <inox_kas@yahoo.com> writes:
> When I run the above command in GDB I get the
> following error:
> Dwarf Error: Could not find abbrev number 116. 

This ostensibly means that the debug info in your executable file is
corrupted.  An `abbrev' describes the content and layout of a dwarf
debugging information entry.

What do you get if you run `readelf -wi' on your object file?

Re: Dwarf Error: Could not find abbrev number 116.

[kas turi]

Hi Jim
  Thanks for responding. When I run
powerpc-linux-readelf -w I get the following error:
Could not locate entry for abbrev number 105.

But today I found out that I can add the object files
separately in the gdb. If a.o and b.o are object files
and x.o is the loadable module then I am able to do:
add-symbol-file a.o <text-addr>
add-symbol-file b.o <text-addr + offset>
where offset : starting addr of the first function in
b.o file.
--- Jim Blandy <jimb@redhat.com> wrote:
> 
> kas turi <inox_kas@yahoo.com> writes:
> > When I run the above command in GDB I get the
> > following error:
> > Dwarf Error: Could not find abbrev number 116. 
> 
> This ostensibly means that the debug info in your
> executable file is
> corrupted.  An `abbrev' describes the content and
> layout of a dwarf
> debugging information entry.
> 
> What do you get if you run `readelf -wi' on your
> object file?


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