.section .data

# .equ	slash, 0x2f
#slash:	.ascii "/"
#slash:	.ascix "/"
slash:	.byte	0x2f

.section .bss
	.lcomm	cwd_len, 4		# used to store pwd's len
	.lcomm	bin_len, 4		# used to store binary's name lenght		
	.lcomm  addr, 4			# aux, for testing
	.section .text
.globl _start

_start:
	nop				# let gdb stop in here if needed
	movl	%esp, %ebp		# save stack pointer, just in case
	
	movl    4(%esp), %eax		# give eax argv[0]'s value

	xorl	$1, %ebx		# set ebx to one
	movl    8(%esp, %ebx, 4), %edi	# move %ebx before any command line value
	
	subl	%eax, %edi		# (command line lenght\0)+1 should be in %edi now

	dec	%edi			# get rid of the null separator
	movl	%edi, cwd_len		# save cwd's real lenght

	movl	(%esp, %ebx, 4), %ecx	# now, move to to the end of argv[0]

find:
	sub	$slash, %ecx		# don't really know if this working as expected
	jg	exit			# exit if found
	
	dec	%ecx			# decrement %ecx
	inc	%ebx			# inrement %ebx

	cmp	%eax, %ecx		# bail out if cwd's len is traspassed
	je	exit
	
	jmp	find		
				
exit:	
	movl	$1, %eax
	int	$0x80