diff options
Diffstat (limited to 'src/lib/libc/string/bcmp.c')
-rw-r--r-- | src/lib/libc/string/bcmp.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/lib/libc/string/bcmp.c b/src/lib/libc/string/bcmp.c new file mode 100644 index 0000000000..4ed00975a4 --- /dev/null +++ b/src/lib/libc/string/bcmp.c | |||
@@ -0,0 +1,63 @@ | |||
1 | /* | ||
2 | * Copyright (c) 1987 Regents of the University of California. | ||
3 | * All rights reserved. | ||
4 | * | ||
5 | * Redistribution and use in source and binary forms, with or without | ||
6 | * modification, are permitted provided that the following conditions | ||
7 | * are met: | ||
8 | * 1. Redistributions of source code must retain the above copyright | ||
9 | * notice, this list of conditions and the following disclaimer. | ||
10 | * 2. Redistributions in binary form must reproduce the above copyright | ||
11 | * notice, this list of conditions and the following disclaimer in the | ||
12 | * documentation and/or other materials provided with the distribution. | ||
13 | * 3. All advertising materials mentioning features or use of this software | ||
14 | * must display the following acknowledgement: | ||
15 | * This product includes software developed by the University of | ||
16 | * California, Berkeley and its contributors. | ||
17 | * 4. Neither the name of the University nor the names of its contributors | ||
18 | * may be used to endorse or promote products derived from this software | ||
19 | * without specific prior written permission. | ||
20 | * | ||
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | ||
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | ||
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
31 | * SUCH DAMAGE. | ||
32 | */ | ||
33 | |||
34 | #if defined(LIBC_SCCS) && !defined(lint) | ||
35 | static char *rcsid = "$OpenBSD: bcmp.c,v 1.4 1996/08/19 08:33:57 tholo Exp $"; | ||
36 | #endif /* LIBC_SCCS and not lint */ | ||
37 | |||
38 | #ifndef _KERNEL | ||
39 | #include <string.h> | ||
40 | #else | ||
41 | #include <lib/libkern/libkern.h> | ||
42 | #endif | ||
43 | |||
44 | /* | ||
45 | * bcmp -- vax cmpc3 instruction | ||
46 | */ | ||
47 | int | ||
48 | bcmp(b1, b2, length) | ||
49 | const void *b1, *b2; | ||
50 | register size_t length; | ||
51 | { | ||
52 | register char *p1, *p2; | ||
53 | |||
54 | if (length == 0) | ||
55 | return(0); | ||
56 | p1 = (char *)b1; | ||
57 | p2 = (char *)b2; | ||
58 | do | ||
59 | if (*p1++ != *p2++) | ||
60 | break; | ||
61 | while (--length); | ||
62 | return(length); | ||
63 | } | ||