Annotation of sys/lib/libkern/bcmp.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: bcmp.c,v 1.8 2004/11/28 07:23:41 mickey Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1987 Regents of the University of California.
! 5: * All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: * 3. Neither the name of the University nor the names of its contributors
! 16: * may be used to endorse or promote products derived from this software
! 17: * without specific prior written permission.
! 18: *
! 19: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 22: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 29: * SUCH DAMAGE.
! 30: */
! 31:
! 32: #if defined(LIBC_SCCS) && !defined(lint)
! 33: static char *rcsid = "$OpenBSD: bcmp.c,v 1.8 2004/11/28 07:23:41 mickey Exp $";
! 34: #endif /* LIBC_SCCS and not lint */
! 35:
! 36: #if !defined(_KERNEL) && !defined(_STANDALONE)
! 37: #include <string.h>
! 38: #else
! 39: #include <lib/libkern/libkern.h>
! 40: #endif
! 41:
! 42: /*
! 43: * bcmp -- vax cmpc3 instruction
! 44: */
! 45: int
! 46: bcmp(b1, b2, length)
! 47: const void *b1, *b2;
! 48: register size_t length;
! 49: {
! 50: register char *p1, *p2;
! 51:
! 52: if (length == 0)
! 53: return(0);
! 54: p1 = (char *)b1;
! 55: p2 = (char *)b2;
! 56: do
! 57: if (*p1++ != *p2++)
! 58: break;
! 59: while (--length);
! 60: return(length);
! 61: }
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