1*f6217f89SApple OSS Distributions /*-
2*f6217f89SApple OSS Distributions * Copyright (c) 1990, 1993
3*f6217f89SApple OSS Distributions * The Regents of the University of California. All rights reserved.
4*f6217f89SApple OSS Distributions *
5*f6217f89SApple OSS Distributions * This code is derived from software contributed to Berkeley by
6*f6217f89SApple OSS Distributions * Chris Torek.
7*f6217f89SApple OSS Distributions *
8*f6217f89SApple OSS Distributions * Redistribution and use in source and binary forms, with or without
9*f6217f89SApple OSS Distributions * modification, are permitted provided that the following conditions
10*f6217f89SApple OSS Distributions * are met:
11*f6217f89SApple OSS Distributions * 1. Redistributions of source code must retain the above copyright
12*f6217f89SApple OSS Distributions * notice, this list of conditions and the following disclaimer.
13*f6217f89SApple OSS Distributions * 2. Redistributions in binary form must reproduce the above copyright
14*f6217f89SApple OSS Distributions * notice, this list of conditions and the following disclaimer in the
15*f6217f89SApple OSS Distributions * documentation and/or other materials provided with the distribution.
16*f6217f89SApple OSS Distributions * 4. Neither the name of the University nor the names of its contributors
17*f6217f89SApple OSS Distributions * may be used to endorse or promote products derived from this software
18*f6217f89SApple OSS Distributions * without specific prior written permission.
19*f6217f89SApple OSS Distributions *
20*f6217f89SApple OSS Distributions * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21*f6217f89SApple OSS Distributions * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22*f6217f89SApple OSS Distributions * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23*f6217f89SApple OSS Distributions * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24*f6217f89SApple OSS Distributions * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25*f6217f89SApple OSS Distributions * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26*f6217f89SApple OSS Distributions * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27*f6217f89SApple OSS Distributions * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28*f6217f89SApple OSS Distributions * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29*f6217f89SApple OSS Distributions * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30*f6217f89SApple OSS Distributions * SUCH DAMAGE.
31*f6217f89SApple OSS Distributions */
32*f6217f89SApple OSS Distributions
33*f6217f89SApple OSS Distributions #include "string.h"
34*f6217f89SApple OSS Distributions
35*f6217f89SApple OSS Distributions /*
36*f6217f89SApple OSS Distributions * Compare strings.
37*f6217f89SApple OSS Distributions */
38*f6217f89SApple OSS Distributions __attribute__((visibility("hidden")))
39*f6217f89SApple OSS Distributions int
_libkernel_strcmp(const char * s1,const char * s2)40*f6217f89SApple OSS Distributions _libkernel_strcmp(const char *s1, const char *s2)
41*f6217f89SApple OSS Distributions {
42*f6217f89SApple OSS Distributions while (*s1 == *s2++) {
43*f6217f89SApple OSS Distributions if (*s1++ == '\0') {
44*f6217f89SApple OSS Distributions return 0;
45*f6217f89SApple OSS Distributions }
46*f6217f89SApple OSS Distributions }
47*f6217f89SApple OSS Distributions return *(const unsigned char *)s1 - *(const unsigned char *)(s2 - 1);
48*f6217f89SApple OSS Distributions }
49