xref: /titanic_50/usr/src/cmd/sgs/libelf/common/hash.c (revision fa9e4066f08beec538e775443c5be79dd423fcab)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*	Copyright (c) 1988 AT&T	*/
23 /*	  All Rights Reserved  	*/
24 
25 
26 /*
27  * Copyright (c) 2000 by Sun Microsystems, Inc.
28  * All rights reserved.
29  */
30 
31 #pragma ident	"%Z%%M%	%I%	%E% SMI" 	/* SVr4.0 1.4	*/
32 
33 #pragma weak	elf_hash = _elf_hash
34 
35 
36 #include "syn.h"
37 
38 
39 /*
40  * The elf_hash() routine as defined by the gABI
41  */
42 unsigned long
43 elf_hash(const char * ename)
44 {
45 	unsigned int	hval = 0;
46 
47 	while (*ename) {
48 		unsigned int	g;
49 		hval = (hval << 4) + *ename++;
50 		if ((g = (hval & 0xf0000000)) != 0)
51 			hval ^= g >> 24;
52 		hval &= ~g;
53 	}
54 	return ((unsigned long)hval);
55 }
56