Write integer to stdout in assembly

writeint.asm

; usage
;	mov eax, NUMBER
; 	call writeint

writeint:
	mov ecx, 10
.pushloop:
	mov ebx, 10
	xor edx, edx
	div ebx

	push edx

	loop .pushloop

	mov ecx, 10
.poploop:
	pop eax
	add eax, '0'

	push ecx
	push eax

	mov eax, 4
	mov ebx, 1
	mov ecx, esp
	mov edx, 1
	int 0x80

	pop eax
	pop ecx

	loop .poploop

.newline:
	; print newline
	mov eax, `\n`
	push eax

	mov eax, 4
	mov ebx, 1
	mov ecx, esp
	mov edx, 1
	int 0x80

	pop eax

	ret