File:  [CSRG BSD Unix] / 43BSDTahoe / lib / libc / gen / gen.vax / bcmp.s
Revision 1.1.1.1 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 16:12:57 2018 UTC (8 years, 1 month ago) by root
Branches: MAIN, BSD
CVS tags: HEAD, BSD43tahoe
BSD 4.3tahoe

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#if defined(LIBC_SCCS) && !defined(lint)
	.asciz "@(#)bcmp.s	5.5 (Berkeley) 6/27/88"
#endif /* LIBC_SCCS and not lint */

/* bcmp(s1, s2, n) */

#include "DEFS.h"

ENTRY(bcmp, 0)
	movl	4(ap),r1
	movl	8(ap),r3
	movl	12(ap),r4
1:
	movzwl	$65535,r0
	cmpl	r4,r0
	jleq	2f
	subl2	r0,r4
	cmpc3	r0,(r1),(r3)
	jeql	1b
	addl2	r4,r0
	ret
2:
	cmpc3	r4,(r1),(r3)
	ret

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