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/* Handle shared libraries for GDB, the GNU Debugger.
Copyright (C) 2000, 2004, 2006
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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
#ifndef SOLIB_SVR4_H
#define SOLIB_SVR4_H
struct objfile;
/* 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
{
/* Offset and size of r_debug.r_version. */
int r_version_offset, r_version_size;
/* Offset of r_debug.r_map. */
int r_map_offset;
/* Offset of r_debug.r_ldsomap. */
int r_ldsomap_offset;
/* 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_ld field in struct link_map. */
int l_ld_offset;
/* Size of l_ld field in struct link_map. */
int l_ld_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));
/* This function is called by thread_db.c. Return the address of the
link map for the given objfile. */
extern CORE_ADDR svr4_fetch_objfile_link_map (struct objfile *objfile);
/* 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);
/* Fetch (and possibly build) an appropriate `struct link_map_offsets'
for ILP32 and LP64 SVR4 systems. */
extern struct link_map_offsets *svr4_ilp32_fetch_link_map_offsets (void);
extern struct link_map_offsets *svr4_lp64_fetch_link_map_offsets (void);
#endif /* solib-svr4.h */
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