1 /* Shared library declarations for GDB, the GNU Debugger.
2 Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000,
3 2001, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
23 #define SO_NAME_MAX_PATH_SIZE 512 /* FIXME: Should be dynamic */
24 /* For domain_enum domain. */
27 /* Forward declaration for target specific link map information. This
28 struct is opaque to all but the target specific file. */
33 /* The following fields of the structure come directly from the
34 dynamic linker's tables in the inferior, and are initialized by
37 struct so_list *next; /* next structure in linked list */
39 /* A pointer to target specific link map information. Often this
40 will be a copy of struct link_map from the user process, but
41 it need not be; it can be any collection of data needed to
42 traverse the dynamic linker's data structures. */
43 struct lm_info *lm_info;
45 /* Shared object file name, exactly as it appears in the
46 inferior's link map. This may be a relative path, or something
47 which needs to be looked up in LD_LIBRARY_PATH, etc. We use it
48 to tell which entries in the inferior's dynamic linker's link
49 map we've already loaded. */
50 char so_original_name[SO_NAME_MAX_PATH_SIZE];
52 /* shared object file name, expanded to something GDB can open */
53 char so_name[SO_NAME_MAX_PATH_SIZE];
55 /* Program space this shared library belongs to. */
56 struct program_space *pspace;
58 /* The following fields of the structure are built from
59 information gathered from the shared object file itself, and
60 are set when we actually add it to our symbol tables.
62 current_sos must initialize these fields to 0. */
65 char symbols_loaded; /* flag: symbols read in yet? */
66 char from_tty; /* flag: print msgs? */
67 struct objfile *objfile; /* objfile for loaded lib */
68 struct target_section *sections;
69 struct target_section *sections_end;
71 /* Record the range of addresses belonging to this shared library.
72 There may not be just one (e.g. if two segments are relocated
73 differently); but this is only used for "info sharedlibrary". */
74 CORE_ADDR addr_low, addr_high;
79 /* Adjust the section binding addresses by the base address at
80 which the object was actually mapped. */
81 void (*relocate_section_addresses) (struct so_list *so,
82 struct target_section *);
84 /* Free the the link map info and any other private data
85 structures associated with a so_list entry. */
86 void (*free_so) (struct so_list *so);
88 /* Reset or free private data structures not associated with
90 void (*clear_solib) (void);
92 /* Target dependent code to run after child process fork. */
93 void (*solib_create_inferior_hook) (void);
95 /* Do additional symbol handling, lookup, etc. after symbols
96 for a shared object have been loaded. */
97 void (*special_symbol_handling) (void);
99 /* Construct a list of the currently loaded shared objects. */
100 struct so_list *(*current_sos) (void);
102 /* Find, open, and read the symbols for the main executable. */
103 int (*open_symbol_file_object) (void *from_ttyp);
105 /* Determine if PC lies in the dynamic symbol resolution code of
106 the run time loader */
107 int (*in_dynsym_resolve_code) (CORE_ADDR pc);
109 /* Find and open shared library binary file. */
110 bfd *(*bfd_open) (char *pathname);
112 /* Extra hook for finding and opening a solib.
113 Convenience function for remote debuggers finding host libs. */
114 int (*find_and_open_solib) (char *soname,
115 unsigned o_flags, char **temp_pathname);
117 /* Hook for looking up global symbols in a library-specific way. */
118 struct symbol * (*lookup_lib_global_symbol) (const struct objfile *objfile,
120 const char *linkage_name,
121 const domain_enum domain);
123 /* Given two so_list objects, one from the GDB thread list
124 and another from the list returned by current_sos, return 1
125 if they represent the same library.
126 Falls back to using strcmp on so_original_name field when set
128 int (*same) (struct so_list *gdb, struct so_list *inferior);
130 /* Return whether a region of memory must be kept in a core file
131 for shared libraries loaded before "gcore" is used to be
132 handled correctly when the core file is loaded. This only
133 applies when the section would otherwise not be kept in the
134 core file (in particular, for readonly sections). */
135 int (*keep_data_in_core) (CORE_ADDR vaddr,
139 /* Free the memory associated with a (so_list *). */
140 void free_so (struct so_list *so);
142 /* Return address of first so_list entry in master shared object list. */
143 struct so_list *master_so_list (void);
145 /* Find shared library binary file. */
146 extern char *solib_find (char *in_pathname, int *fd);
148 /* Open BFD for shared library file. */
149 extern bfd *solib_bfd_fopen (char *pathname, int fd);
151 /* Find solib binary file and open it. */
152 extern bfd *solib_bfd_open (char *in_pathname);
154 /* FIXME: gdbarch needs to control this variable */
155 extern struct target_so_ops *current_target_so_ops;
157 /* Handler for library-specific global symbol lookup in solib.c. */
158 struct symbol *solib_global_lookup (const struct objfile *objfile,
160 const char *linkage_name,
161 const domain_enum domain);