1*42e22086SApple OSS Distributions /*-
2*42e22086SApple OSS Distributions * Copyright (c) 1990, 1993
3*42e22086SApple OSS Distributions * The Regents of the University of California. All rights reserved.
4*42e22086SApple OSS Distributions *
5*42e22086SApple OSS Distributions * This code is derived from software contributed to Berkeley by
6*42e22086SApple OSS Distributions * Chris Torek.
7*42e22086SApple OSS Distributions *
8*42e22086SApple OSS Distributions * Redistribution and use in source and binary forms, with or without
9*42e22086SApple OSS Distributions * modification, are permitted provided that the following conditions
10*42e22086SApple OSS Distributions * are met:
11*42e22086SApple OSS Distributions * 1. Redistributions of source code must retain the above copyright
12*42e22086SApple OSS Distributions * notice, this list of conditions and the following disclaimer.
13*42e22086SApple OSS Distributions * 2. Redistributions in binary form must reproduce the above copyright
14*42e22086SApple OSS Distributions * notice, this list of conditions and the following disclaimer in the
15*42e22086SApple OSS Distributions * documentation and/or other materials provided with the distribution.
16*42e22086SApple OSS Distributions * 4. Neither the name of the University nor the names of its contributors
17*42e22086SApple OSS Distributions * may be used to endorse or promote products derived from this software
18*42e22086SApple OSS Distributions * without specific prior written permission.
19*42e22086SApple OSS Distributions *
20*42e22086SApple OSS Distributions * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21*42e22086SApple OSS Distributions * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22*42e22086SApple OSS Distributions * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23*42e22086SApple OSS Distributions * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24*42e22086SApple OSS Distributions * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25*42e22086SApple OSS Distributions * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26*42e22086SApple OSS Distributions * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27*42e22086SApple OSS Distributions * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28*42e22086SApple OSS Distributions * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29*42e22086SApple OSS Distributions * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30*42e22086SApple OSS Distributions * SUCH DAMAGE.
31*42e22086SApple OSS Distributions */
32*42e22086SApple OSS Distributions
33*42e22086SApple OSS Distributions #include "string.h"
34*42e22086SApple OSS Distributions
35*42e22086SApple OSS Distributions /*
36*42e22086SApple OSS Distributions * Compare strings.
37*42e22086SApple OSS Distributions */
38*42e22086SApple OSS Distributions __attribute__((visibility("hidden")))
39*42e22086SApple OSS Distributions int
_libkernel_strcmp(const char * s1,const char * s2)40*42e22086SApple OSS Distributions _libkernel_strcmp(const char *s1, const char *s2)
41*42e22086SApple OSS Distributions {
42*42e22086SApple OSS Distributions while (*s1 == *s2++) {
43*42e22086SApple OSS Distributions if (*s1++ == '\0') {
44*42e22086SApple OSS Distributions return 0;
45*42e22086SApple OSS Distributions }
46*42e22086SApple OSS Distributions }
47*42e22086SApple OSS Distributions return *(const unsigned char *)s1 - *(const unsigned char *)(s2 - 1);
48*42e22086SApple OSS Distributions }
49