xref: /onnv-gate/usr/src/cmd/sgs/libelf/common/hash.c (revision 6812:febeba71273d)
10Sstevel@tonic-gate /*
20Sstevel@tonic-gate  * CDDL HEADER START
30Sstevel@tonic-gate  *
40Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*6812Sraf  * Common Development and Distribution License (the "License").
6*6812Sraf  * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate  *
80Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate  * See the License for the specific language governing permissions
110Sstevel@tonic-gate  * and limitations under the License.
120Sstevel@tonic-gate  *
130Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate  *
190Sstevel@tonic-gate  * CDDL HEADER END
200Sstevel@tonic-gate  */
21*6812Sraf 
22*6812Sraf /*
23*6812Sraf  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24*6812Sraf  * Use is subject to license terms.
25*6812Sraf  */
26*6812Sraf 
270Sstevel@tonic-gate /*	Copyright (c) 1988 AT&T	*/
280Sstevel@tonic-gate /*	  All Rights Reserved  	*/
290Sstevel@tonic-gate 
30*6812Sraf #pragma ident	"%Z%%M%	%I%	%E% SMI"
310Sstevel@tonic-gate 
320Sstevel@tonic-gate /*
330Sstevel@tonic-gate  * The elf_hash() routine as defined by the gABI
340Sstevel@tonic-gate  */
350Sstevel@tonic-gate unsigned long
elf_hash(const char * ename)36*6812Sraf elf_hash(const char *ename)
370Sstevel@tonic-gate {
380Sstevel@tonic-gate 	unsigned int	hval = 0;
390Sstevel@tonic-gate 
400Sstevel@tonic-gate 	while (*ename) {
410Sstevel@tonic-gate 		unsigned int	g;
420Sstevel@tonic-gate 		hval = (hval << 4) + *ename++;
430Sstevel@tonic-gate 		if ((g = (hval & 0xf0000000)) != 0)
440Sstevel@tonic-gate 			hval ^= g >> 24;
450Sstevel@tonic-gate 		hval &= ~g;
460Sstevel@tonic-gate 	}
470Sstevel@tonic-gate 	return ((unsigned long)hval);
480Sstevel@tonic-gate }
49