; bcmp.asm
; asm i386 bcmp() function

GLOBAL bcmp

bcmp:
	push edi 
	push esi
	mov edi,[12+esp]
	mov esi,[16+esp]
	xor eax,eax		; Clear return value
	cld			; The compare direction must be set forward.

	mov ecx,[20+esp]	; Word compare
	shr ecx,2
	repe
	cmpsl
	jne R1

	mov ecx,[20+esp]	; Not enough data to do word compare; preform
	and ecx,3		; byte compare.
	repe
	cmpsb
	je R2

R1: 	inc eax
R2:	pop esi
	pop edi
	ret