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
