Upgrade GDB from 7.4.1 to 7.6.1 on the vendor branch
[dragonfly.git] / contrib / gdb-7 / gdb / solib-svr4.h
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1/* Handle shared libraries for GDB, the GNU Debugger.
2
ef5ccd6c 3 Copyright (C) 2000-2013 Free Software Foundation, Inc.
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4
5 This file is part of GDB.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19
20#ifndef SOLIB_SVR4_H
21#define SOLIB_SVR4_H
22
23struct objfile;
24struct target_so_ops;
25
26extern struct target_so_ops svr4_so_ops;
27
28/* Critical offsets and sizes which describe struct r_debug and
29 struct link_map on SVR4-like targets. All offsets and sizes are
30 in bytes unless otherwise specified. */
31
32struct link_map_offsets
33 {
34 /* Offset and size of r_debug.r_version. */
35 int r_version_offset, r_version_size;
36
37 /* Offset of r_debug.r_map. */
38 int r_map_offset;
39
40 /* Offset of r_debug.r_brk. */
41 int r_brk_offset;
42
43 /* Offset of r_debug.r_ldsomap. */
44 int r_ldsomap_offset;
45
46 /* Size of struct link_map (or equivalent), or at least enough of it
47 to be able to obtain the fields below. */
48 int link_map_size;
49
50 /* Offset to l_addr field in struct link_map. */
51 int l_addr_offset;
52
53 /* Offset to l_ld field in struct link_map. */
54 int l_ld_offset;
55
56 /* Offset to l_next field in struct link_map. */
57 int l_next_offset;
58
59 /* Offset to l_prev field in struct link_map. */
60 int l_prev_offset;
61
62 /* Offset to l_name field in struct link_map. */
63 int l_name_offset;
64 };
65
66/* set_solib_svr4_fetch_link_map_offsets() is intended to be called by
67 a <arch>_gdbarch_init() function. It is used to establish an
68 architecture specific link_map_offsets fetcher for the architecture
69 being defined. */
70
71extern void set_solib_svr4_fetch_link_map_offsets
72 (struct gdbarch *gdbarch, struct link_map_offsets *(*func) (void));
73
74/* This function is called by thread_db.c. Return the address of the
75 link map for the given objfile. */
76extern CORE_ADDR svr4_fetch_objfile_link_map (struct objfile *objfile);
77
78/* Fetch (and possibly build) an appropriate `struct link_map_offsets'
79 for ILP32 and LP64 SVR4 systems. */
80extern struct link_map_offsets *svr4_ilp32_fetch_link_map_offsets (void);
81extern struct link_map_offsets *svr4_lp64_fetch_link_map_offsets (void);
82
83/* Return 1 if PC lies in the dynamic symbol resolution code of the
84 SVR4 run time loader. */
85int svr4_in_dynsym_resolve_code (CORE_ADDR pc);
86
87#endif /* solib-svr4.h */