Re: About bfd (Binary File Descriptor)

[libra <mr924352 at cs dot nthu dot edu dot tw>]

At first, thanks for your reply.

I give an example to explain my problem.

For example, when i compile a c file to an executable file by using gcc,
i use the arm-elf-objdump(cross compile for target "arm") to dump the 
executable file.Obviously,this will show the error message like "arm-elf-
objdump: a.exe: File format not recognized".

I try to find where is the program to examine the file format(ex:pei-i386 or 
elf32-littlearm). But, i get nothing.
I think there must be some place to set the file format information, and to 
check the file format when you wnat to execute this executable file or to dump 
it.

                                                          thanks a lot!!

----- Original Message -----  
> > If we add new file format in binutils, we must add new file like
> > cpu.-arm.c elf32-arm.c (ex:for ELF in arm).
> > 
> > There are also some files like bfd.c, bfd-in.h,archive.c,targets.c and so 
on.
> > 
> > My question is that:
> > 
> > How these file communicate with each other?
> 
> I'm sorry, I don't understand this question.
> 
> > What is different between bfd and ELF?
> 
> BFD is a library for reading and writing object files.  It supports a
> number of different object file formats.
> 
> ELF is an object file format.  It is one of the object file formats
> which BFD supports.
> 
> On a typical GNU/Linux system, you can get some very limited
> information by running the command 'info bfd'.
> 
> Ian
>