Main.s

.text
.global	_start
_start:
	xorl	%ebx, %ebx
	movl	$buf, %ecx
	movl	%ebx, (%ecx)
	movl	$buf_length, %edx
	movl	$buf, %ecx
	movl	$0, %ebx
	movl	$3, %eax
	int 	$0x80
	movl	$buf, %ecx
forloop_1:
	xorl	%ebx, %ebx
	movb	(%ecx), %bl
	cmpl	$0x30, %ebx
	jl	endforloop_1
	cmpl	$0x39, %ebx
	jg	endforloop_1
	movl	$number_1, %eax
	movl	(%eax), %eax
	movl	$10, %edx
	mull	%edx
	subl	$0x30, %ebx
	addl	%ebx, %eax
	movl	$number_1, %ebx
	movl	%eax, (%ebx)
	incl	%ecx
	jmp	forloop_1
endforloop_1:
	xorl	%ebx, %ebx
	movl	$buf, %ecx
	movl	%ebx, (%ecx)
	movl	$buf_length, %edx
	movl	$buf, %ecx
	movl	$0, %ebx
	movl	$3, %eax
	int 	$0x80
	movl	$buf, %ecx
forloop_2:
	xorl	%ebx, %ebx
	movb	(%ecx), %bl
	cmpl	$0x30, %ebx
	jl	endforloop_2
	cmpl	$0x39, %ebx
	jg	endforloop_2
	movl	$number_2, %eax
	movl	(%eax), %eax
	movl	$10, %edx
	mull	%edx
	subl	$0x30, %ebx
	addl	%ebx, %eax
	movl	$number_2, %ebx
	movl	%eax, (%ebx)
	incl	%ecx
	jmp	forloop_2
endforloop_2:
	xorl	%ebx, %ebx
	movl	$buf, %ecx
	movl	%ebx, (%ecx)
	movl	$number_1, %ebx
	movl	(%ebx), %ebx
	movl	$number_2, %edx
	movl	(%edx), %edx
	subl	%edx, %ebx
	movl	$result, %edx
	movl	%ebx, (%edx)
	movl	$result, %ebx
	movl	(%ebx), %ebx
forloop_3:
	cmpl	$0, %ebx
	jle	endforloop_3
	xorl	%eax, %eax
	xorl	%edx, %edx
	movl	$result, %eax
	movl	(%eax), %eax
	movl	$10, %ebx
	divl	%ebx
	movl	$result, %ebx
	movl	%eax, (%ebx)
	movl	$buf, %ebx
	movl	(%ebx), %ebx
	shl	$8, %ebx
	movl	$buf, %ecx
	movl	%ebx, (%ecx)
	addl	$0x30, %edx
	orl	%edx, %ebx
	movl	%ebx, (%ecx)
	movl	$result, %ebx
	movl	(%ebx), %ebx
	jmp	forloop_3
endforloop_3:
	movl	$buf_length, %edx
	movl	$buf, %ecx
	movl	$1, %ebx
	movl	$4, %eax
	int	$0x80
exit:
	movl	$0, %ebx
	movl	$1, %eax
	int	$0x80
.data
buf:
	.byte 	0x0, 0x0, 0x0, 0x0
	buf_length = . - buf
number_1:
	.long 	0x0
number_2:
	.long 	0x0
result:
	.long 	0x0