Linux Assembly - Hello World
============================

Public domain
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    ; Filename: hello.asm
    ; Compile : nasm -f elf hello.asm -l hello.lst
    ; Link    : ld -s -o hello hello.o
    ; Debug   : ald hello
    ; Disasm  : objdump -M intel -D hello
    ; Disasm  : ndisasm -u hello
    ; Dump    : hexdump -C hello
    ; Syscall : strace ./hello
    ; Syscall : /usr/include/asm-i386/unistd.h
    ; Syscall : /usr/src/linux/arch/i386/kernel/entry.S
    ; Manual  : man 2 write  
    ; Desc    : ssize_t write( int fd, 
    ;                          const void *buf, 
    ;                          size_t count);
    ; Register: ebx=(int fd),
    ;           ecx=(const void *buf), 
    ;           edx=(size_t count);
    
    section .data
    msg      db      "Hello World !!!",0xa
    len      equ     $ - msg
    
    section .text
    global _start
    _start:
    
    ;write our string to stdout
            mov     edx,len ;third argument:  message length
            mov     ecx,msg ;second argument: pointer to message
            mov     ebx,1   ;first argument:  file handle (stdout)
            mov     eax,4   ;system call number (sys_write)
            int     0x80    ;call kernel
    
    ;and exit
            mov     ebx,0   ;first syscall argument: exit code
            mov     eax,1   ;system call number (sys_exit)
            int     0x80    ;call kernel
    
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_BY: Pejman Moghadam_  
_TAG: asm, hello-world_  
_DATE: 2008-08-06 19:29:48_