[Nasm-users] can't write argv[0] on stdout

[Holger H. <ha...@gm...>]

Hi all,

i want to write 3 bytes of argv[0] on stdout but it doesn't work. 
Return code -14 (EFAULT Bad address). Am i missing something here? 

System is archlinux 2009.08 x86_64 kernel 2.6.31-rc6 
nasm 2.05.01 Binutils 2.19.1.20090418



stdout	equ	1
write	equ	4
exit	equ	1

section .text
	global	_start
_start:	
	pop	rax		; rax = argc
	pop	rax		; rax = argv[0]

	mov	rdx,	3	; write 3 bytes
	mov	rcx,	rax	; rcx = rax = argv[0]
	mov	rbx,	stdout	
	mov	rax,	write	
	int	0x80
	
	mov	rbx,	0
	mov	rax,	exit
	int	0x80