1/*
2 * Copyright (C) 2012 The Android Open Source Project
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 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in
12 *    the documentation and/or other materials provided with the
13 *    distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28#ifndef _LINK_H_
29#define _LINK_H_
30
31#include <sys/types.h>
32#include <elf.h>
33
34__BEGIN_DECLS
35
36#if __LP64__
37#define ElfW(type) Elf64_ ## type
38#else
39#define ElfW(type) Elf32_ ## type
40#endif
41
42struct dl_phdr_info {
43  ElfW(Addr) dlpi_addr;
44  const char* dlpi_name;
45  const ElfW(Phdr)* dlpi_phdr;
46  ElfW(Half) dlpi_phnum;
47};
48
49int dl_iterate_phdr(int (*)(struct dl_phdr_info*, size_t, void*), void*);
50
51#ifdef __arm__
52typedef long unsigned int* _Unwind_Ptr;
53_Unwind_Ptr dl_unwind_find_exidx(_Unwind_Ptr, int*);
54#endif
55
56/* Used by the dynamic linker to communicate with the debugger. */
57struct link_map {
58  ElfW(Addr) l_addr;
59  char* l_name;
60  ElfW(Dyn)* l_ld;
61  struct link_map* l_next;
62  struct link_map* l_prev;
63};
64
65/* Used by the dynamic linker to communicate with the debugger. */
66struct r_debug {
67  int32_t r_version;
68  struct link_map* r_map;
69  ElfW(Addr) r_brk;
70  enum {
71    RT_CONSISTENT,
72    RT_ADD,
73    RT_DELETE
74  } r_state;
75  ElfW(Addr) r_ldbase;
76};
77
78__END_DECLS
79
80#endif /* _LINK_H_ */
81