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 -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
