1/*
2 * Copyright 2005-2010 Analog Devices Inc.
3 *
4 * Licensed under the Clear BSD license or the GPL-2 (or later)
5 */
6
7#include <linux/linkage.h>
8
9/* void *strcmp(char *s1, const char *s2);
10 * R0 = address (s1)
11 * R1 = address (s2)
12 *
13 * Returns an integer less than, equal to, or greater than zero if s1
14 *  (or the first n  bytes thereof) is found, respectively, to be less
15 *  than, to match, or be greater than s2.
16 */
17
18#ifdef CONFIG_STRCMP_L1
19.section .l1.text
20#else
21.text
22#endif
23
24.align 2
25
26ENTRY(_strcmp)
27	P0 = R0 ;       /* s1 */
28	P1 = R1 ;       /* s2 */
29
301:
31	R0 = B[P0++] (Z);      /* get *s1 */
32	R1 = B[P1++] (Z);      /* get *s2 */
33	CC = R0 == R1;         /* compare a byte */
34	if ! cc jump 2f;       /* not equal, break out */
35	CC = R0;               /* at end of s1? */
36	if cc jump 1b (bp);    /* no, keep going */
37	jump.s 3f;             /* strings are equal */
382:
39	R0 = R0 - R1;          /* *s1 - *s2 */
403:
41	RTS;
42
43ENDPROC(_strcmp)
44