GDB (API): /home/stan/gdb/src/gdb/solib-svr4.h Source File

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00001 /* Handle shared libraries for GDB, the GNU Debugger.
00002 
00003    Copyright (C) 2000-2013 Free Software Foundation, Inc.
00004 
00005    This file is part of GDB.
00006 
00007    This program is free software; you can redistribute it and/or modify
00008    it under the terms of the GNU General Public License as published by
00009    the Free Software Foundation; either version 3 of the License, or
00010    (at your option) any later version.
00011 
00012    This program is distributed in the hope that it will be useful,
00013    but WITHOUT ANY WARRANTY; without even the implied warranty of
00014    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015    GNU General Public License for more details.
00016 
00017    You should have received a copy of the GNU General Public License
00018    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
00019 
00020 #ifndef SOLIB_SVR4_H
00021 #define SOLIB_SVR4_H
00022 
00023 struct objfile;
00024 struct target_so_ops;
00025 
00026 extern struct target_so_ops svr4_so_ops;
00027 
00028 /* Critical offsets and sizes which describe struct r_debug and
00029    struct link_map on SVR4-like targets.  All offsets and sizes are
00030    in bytes unless otherwise specified.  */
00031 
00032 struct link_map_offsets
00033   {
00034     /* Offset and size of r_debug.r_version.  */
00035     int r_version_offset, r_version_size;
00036 
00037     /* Offset of r_debug.r_map.  */
00038     int r_map_offset;
00039 
00040     /* Offset of r_debug.r_brk.  */
00041     int r_brk_offset;
00042 
00043     /* Offset of r_debug.r_ldsomap.  */
00044     int r_ldsomap_offset;
00045 
00046     /* Size of struct link_map (or equivalent), or at least enough of it
00047        to be able to obtain the fields below.  */
00048     int link_map_size;
00049 
00050     /* Offset to l_addr field in struct link_map.  */
00051     int l_addr_offset;
00052 
00053     /* Offset to l_ld field in struct link_map.  */
00054     int l_ld_offset;
00055 
00056     /* Offset to l_next field in struct link_map.  */
00057     int l_next_offset;
00058 
00059     /* Offset to l_prev field in struct link_map.  */
00060     int l_prev_offset;
00061 
00062     /* Offset to l_name field in struct link_map.  */
00063     int l_name_offset;
00064   };
00065 
00066 /* set_solib_svr4_fetch_link_map_offsets() is intended to be called by
00067    a <arch>_gdbarch_init() function.  It is used to establish an
00068    architecture specific link_map_offsets fetcher for the architecture
00069    being defined.  */
00070 
00071 extern void set_solib_svr4_fetch_link_map_offsets
00072   (struct gdbarch *gdbarch, struct link_map_offsets *(*func) (void));
00073 
00074 /* This function is called by thread_db.c.  Return the address of the
00075    link map for the given objfile.  */
00076 extern CORE_ADDR svr4_fetch_objfile_link_map (struct objfile *objfile);
00077 
00078 /* Fetch (and possibly build) an appropriate `struct link_map_offsets'
00079    for ILP32 and LP64 SVR4 systems.  */
00080 extern struct link_map_offsets *svr4_ilp32_fetch_link_map_offsets (void);
00081 extern struct link_map_offsets *svr4_lp64_fetch_link_map_offsets (void);
00082 
00083 /* Return 1 if PC lies in the dynamic symbol resolution code of the
00084    SVR4 run time loader.  */
00085 int svr4_in_dynsym_resolve_code (CORE_ADDR pc);
00086 
00087 #endif /* solib-svr4.h */