Re: Embedding ELFs, Using objcopy and/or xdd

[Nick Clifton]

Hi mondialeeer,

> I am currently trying to embed an ELF into a larger ELF that will manage this
> ELF (boostrap it and execute it).

Do you know about the ".incbin" assembler pseudo op which allows you to 
insert an arbitrary file into a section ?  You could use this to embed 
your small ELF executable into the large ELF executable with symbols 
defined exactly where you want them.

> Extra information is inserted when trying to embed an ELF into a larger ELF. 
> This extra info makes the "start" and "end" labels useless

What "start" and "end" labels are you talking about ?

 if code in the
> larger ELF would like to jump to the beginning of the code section in the
> embedded ELF.
>
> For instance:
> > xdd -i small_elf.o small_elf.c

Note - xdd is not a binutils program so we cannot offer you any help 
with using it.

> Is this extra information the binary encoded symbol table of the ELF?

No idea.  It is probably the ELF header information though.  You should 
have a look at the ELF standard and read up about the format of the header.

Cheers
  Nick