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+/* Handle shared libraries for GDB, the GNU Debugger.
+ Copyright 2000
+ Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/* Critical offsets and sizes which describe struct r_debug and
+ struct link_map on SVR4-like targets. All offsets and sizes are
+ in bytes unless otherwise specified. */
+
+struct link_map_offsets
+ {
+ /* Size of struct r_debug (or equivalent), or at least enough of it to
+ be able to obtain the r_map field. */
+ int r_debug_size;
+
+ /* Offset to the r_map field in struct r_debug. */
+ int r_map_offset;
+
+ /* Size of the r_map field in struct r_debug. */
+ int r_map_size;
+
+ /* Size of struct link_map (or equivalent), or at least enough of it
+ to be able to obtain the fields below. */
+ int link_map_size;
+
+ /* Offset to l_addr field in struct link_map. */
+ int l_addr_offset;
+
+ /* Size of l_addr field in struct link_map. */
+ int l_addr_size;
+
+ /* Offset to l_next field in struct link_map. */
+ int l_next_offset;
+
+ /* Size of l_next field in struct link_map. */
+ int l_next_size;
+
+ /* Offset to l_prev field in struct link_map. */
+ int l_prev_offset;
+
+ /* Size of l_prev field in struct link_map. */
+ int l_prev_size;
+
+ /* Offset to l_name field in struct link_map. */
+ int l_name_offset;
+
+ /* Size of l_name field in struct link_map. */
+ int l_name_size;
+ };
+
+/* set_solib_svr4_fetch_link_map_offsets() is intended to be called by
+ a <arch>_gdbarch_init() function. It is used to establish an
+ architecture specific link_map_offsets fetcher for the architecture
+ being defined. */
+
+extern void set_solib_svr4_fetch_link_map_offsets
+ (struct gdbarch *gdbarch, struct link_map_offsets *(*func) (void));
+
+/* legacy_svr4_fetch_link_map_offsets_hook is a pointer to a function
+ which is used to fetch link map offsets. It will only be set
+ by solib-legacy.c, if at all. */
+extern struct link_map_offsets *(*legacy_svr4_fetch_link_map_offsets_hook)(void);
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