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/*
23 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"@(#)getphnum.c	1.1	05/11/17 SMI"
28
29#include <string.h>
30#include <gelf.h>
31#include <decl.h>
32#include <msg.h>
33
34int
35elf_getphnum(Elf *elf, size_t *phnum)
36{
37	GElf_Ehdr	ehdr;
38	Elf_Scn		*scn;
39	GElf_Shdr	shdr0;
40
41	if (gelf_getehdr(elf, &ehdr) == NULL)
42		return (0);
43
44	if (ehdr.e_phnum != PN_XNUM) {
45		*phnum = ehdr.e_phnum;
46		return (1);
47	}
48
49	if ((scn = elf_getscn(elf, 0)) == NULL ||
50	    gelf_getshdr(scn, &shdr0) == NULL)
51		return (0);
52
53	if (shdr0.sh_info == 0)
54		*phnum = ehdr.e_phnum;
55	else
56		*phnum = shdr0.sh_info;
57
58	return (1);
59}
60