/*
 * Copyright (C) 2004 Atmel Norway.
 */

#define s1 r12
#define s2 r11
#define len r10

	.text
	.global memcmp
	.type	memcmp, @function
	.align	1
memcmp:
	sub	len, 4
	brlt	.Lless_than_4

1:	ld.w	r8, s1++
	ld.w	r9, s2++
	cp.w	r8, r9
	brne	.Lfound_word
	sub	len, 4
	brge	1b

.Lless_than_4:
	sub	len, -4
	reteq	0

1:	ld.ub	r8, s1++
	ld.ub	r9, s2++
	sub	r8, r9
	retne	r8
	sub	len, 1
	brgt	1b

	retal	0

.Lfound_word:
	psub.b	r9, r8, r9
	bfextu	r8, r9, 24, 8
	retne	r8
	bfextu	r8, r9, 16, 8
	retne	r8
	bfextu	r8, r9, 8, 8
	retne	r8
	retal	r9

	.size	memcmp, . - memcmp

	.weak	bcmp
	bcmp = memcmp