Editing Assembly language (section)

=== "Hello, world!" on x86 Linux ===
In 32-bit assembly language for Linux on an [[x86]] processor, "Hello, world!" can be printed like this.
<syntaxhighlight lang="nasm">
section	.text
   global _start
	
_start:	        
   mov	edx,len     ; length of string, third argument to write()
   mov	ecx,msg     ; address of string, second argument to write()
   mov	ebx,1       ; file descriptor (standard output), first argument to write()
   mov	eax,4       ; system call number for write()
   int	0x80        ; system call trap
	
   mov	ebx,0       ; exit code, first argument to exit()
   mov	eax,1       ; system call number for exit()
   int	0x80        ; system call trap

section	.data
msg db 'Hello, world!', 0xa  
len equ $ - msg
</syntaxhighlight>