hash.c

来自「linux下基于c++的处理器仿真平台。具有处理器流水线」· C语言 代码 · 共 41 行

/*
hash.c - implementation of the elf_hash(3) function.
Copyright (C) 1995 - 2002 Michael Riepe <[e-mail]>

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/

#include <private.h>

#ifndef lint
static const char rcsid[] = "@(#) $Id: hash.c,v 1.6 2002/12/30 02:10:14 michael Exp $";
#endif /* lint */

#if !defined(__OpenBSD__)
unsigned long
elf_hash(const unsigned char *name) {
    unsigned long hash = 0;
    unsigned long tmp;

    while (*name) {
	hash = (hash << 4) + (unsigned char)*name++;
	if ((tmp = hash & 0xf0000000)) {
	    hash ^= tmp | (tmp >> 24);
	}
    }
    return hash;
}
#endif