1 /* Handle shared libraries for GDB, the GNU Debugger.
3 Copyright (C) 2000, 2004, 2006
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
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. */
32 struct link_map_offsets
34 /* Offset and size of r_debug.r_version. */
35 int r_version_offset, r_version_size;
37 /* Offset of r_debug.r_map. */
40 /* Offset of r_debug.r_ldsomap. */
43 /* Size of struct link_map (or equivalent), or at least enough of it
44 to be able to obtain the fields below. */
47 /* Offset to l_addr field in struct link_map. */
50 /* Size of l_addr field in struct link_map. */
53 /* Offset to l_next field in struct link_map. */
56 /* Size of l_next field in struct link_map. */
59 /* Offset to l_prev field in struct link_map. */
62 /* Size of l_prev field in struct link_map. */
65 /* Offset to l_name field in struct link_map. */
68 /* Size of l_name field in struct link_map. */
72 /* set_solib_svr4_fetch_link_map_offsets() is intended to be called by
73 a <arch>_gdbarch_init() function. It is used to establish an
74 architecture specific link_map_offsets fetcher for the architecture
77 extern void set_solib_svr4_fetch_link_map_offsets
78 (struct gdbarch *gdbarch, struct link_map_offsets *(*func) (void));
80 /* This function is called by thread_db.c. Return the address of the
81 link map for the given objfile. */
82 extern CORE_ADDR svr4_fetch_objfile_link_map (struct objfile *objfile);
84 /* legacy_svr4_fetch_link_map_offsets_hook is a pointer to a function
85 which is used to fetch link map offsets. It will only be set
86 by solib-legacy.c, if at all. */
87 extern struct link_map_offsets *(*legacy_svr4_fetch_link_map_offsets_hook) (void);
89 /* Fetch (and possibly build) an appropriate `struct link_map_offsets'
90 for ILP32 and LP64 SVR4 systems. */
91 extern struct link_map_offsets *svr4_ilp32_fetch_link_map_offsets (void);
92 extern struct link_map_offsets *svr4_lp64_fetch_link_map_offsets (void);
94 #endif /* solib-svr4.h */