with elf file format it is worked fine for me.
thanks for help.
Regards
Manjunath
On 9/12/06, jill johanson <dedenied@xxxxxxxxx> wrote:
On my i686 machine, I compile personal assembly like
this:
nasm -f elf hello.asm -o hello.o
ld -o hello hello.o
That works for me. From your problem, I would assume
that GNU ld isn't compatible with aout format, that's
why it doesn't work for you. Try ELF and see if that
works.
Also, I would encourage use of Nasm; afterall, it is
very compatible when properly used.
--- Jinesh K J < jineshkj.newsletters@xxxxxxxxx> wrote:
> On 9/8/06, Manjunath Naik
> <peter.desouzain@xxxxxxxxx> wrote:
> > Hi all,
> >
> > I was just tring the simple "hello world"
> assembly program in linux.
> > First time I was able to compile and link the
> file.
> > I just changed something in that file, I got the
> following error while
> > linking it.
> >
> > test.o: file not recognized: File format not
> recognized
> >
> > I am not able tounderstand what is the exact
> problem with it.
> >
> > I had used the following two commands to compile
> nad link the progam.
> >
> > nasm -f aout test.asm
> > ld -e _start -o test test.o
> >
> > my program looks as follows
> >
> > section .text
> > global _start ;must be
> declared for linker (ld)
> >
> > _start: ;tell
> linker entry point
> >
> > mov edx,len ;message length
> > mov ecx,msg ;message to write
> > mov ebx,1 ;file descriptor (stdout)
> > mov eax,4 ;system call number
> (sys_write)
> > int 0x80 ;call kernel
> >
> > mov eax,1 ;system call number
> (sys_exit)
> > int 0x80 ;call kernel
> >
> > section .data
> >
> > msg db 'Hello, world!',0xa ;our dear
> string
> > len equ $ - msg ;length of
> our dear string
> >
> > what might be the problem here?
> >
> > Regards
> > Manjunath
>
> I don't really know what the problem is. But, why
> are you using nasm.
> You can use gnu as for the same. Also, this is not
> the ML for posting
> such queries.
>
> --
> Kernelnewbies: Help each other learn about the Linux
> kernel.
> Archive:
> http://mail.nl.linux.org/kernelnewbies/
> FAQ: http://kernelnewbies.org/faq/
>
>
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