libc: Fix some more -Wmissing-prototype.
[dragonfly.git] / lib / libc / gen / elf_utils.c
CommitLineData
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1/*
2 * Copyright (c) 2010 Konstantin Belousov <kib@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Neither the name of the author nor the names of any co-contributors
11 * may be used to endorse or promote products derived from this software
12 * without specific prior written permission.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/lib/libc/gen/elf_utils.c 217154 2011-01-08 17:13:43Z kib $
27 */
28
29#include <link.h>
30
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SW
31int __elf_phdr_match_addr(struct dl_phdr_info *, void *);
32
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33int
34__elf_phdr_match_addr(struct dl_phdr_info *phdr_info, void *addr)
35{
36 const Elf_Phdr *ph;
37 int i;
38
39 for (i = 0; i < phdr_info->dlpi_phnum; i++) {
40 ph = &phdr_info->dlpi_phdr[i];
41 if (ph->p_type != PT_LOAD || (ph->p_flags & PF_X) == 0)
42 continue;
43 if (phdr_info->dlpi_addr + ph->p_vaddr <= (uintptr_t)addr &&
44 (uintptr_t)addr + sizeof(addr) < phdr_info->dlpi_addr +
45 ph->p_vaddr + ph->p_memsz)
46 break;
47 }
48 return (i != phdr_info->dlpi_phnum);
49}