Check if your kernel compiled with the a.out format support On 9/12/06, Manjunath Naik <peter.desouzain@xxxxxxxxx> wrote:
Hi Johanson 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/ > > > > > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com >
-- wbr, Alex -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
