1 /* Handle shared libraries for GDB, the GNU Debugger.
3 Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
4 1999, 2000, 2001, 2002, 2003, 2005, 2006
5 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, USA. */
26 #include <sys/types.h>
28 #include "gdb_string.h"
33 #include "exceptions.h"
38 #include "gdb_regex.h"
43 #include "completer.h"
44 #include "filenames.h" /* for DOSish file names */
48 #include "readline/readline.h"
50 /* Architecture-specific operations. */
52 /* Per-architecture data key. */
53 static struct gdbarch_data
*solib_data
;
56 solib_init (struct obstack
*obstack
)
58 struct target_so_ops
**ops
;
60 ops
= OBSTACK_ZALLOC (obstack
, struct target_so_ops
*);
61 *ops
= current_target_so_ops
;
65 static struct target_so_ops
*
66 solib_ops (struct gdbarch
*gdbarch
)
68 struct target_so_ops
**ops
= gdbarch_data (gdbarch
, solib_data
);
73 /* external data declarations */
75 /* FIXME: gdbarch needs to control this variable */
76 struct target_so_ops
*current_target_so_ops
;
78 /* local data declarations */
80 static struct so_list
*so_list_head
; /* List of known shared objects */
82 static int solib_cleanup_queued
= 0; /* make_run_cleanup called */
84 /* Local function prototypes */
86 static void do_clear_solib (void *);
88 /* If non-zero, this is a prefix that will be added to the front of the name
89 shared libraries with an absolute filename for loading. */
90 static char *solib_absolute_prefix
= NULL
;
92 /* If non-empty, this is a search path for loading non-absolute shared library
93 symbol files. This takes precedence over the environment variables PATH
94 and LD_LIBRARY_PATH. */
95 static char *solib_search_path
= NULL
;
97 show_solib_search_path (struct ui_file
*file
, int from_tty
,
98 struct cmd_list_element
*c
, const char *value
)
100 fprintf_filtered (file
, _("\
101 The search path for loading non-absolute shared library symbol files is %s.\n"),
109 solib_open -- Find a shared library file and open it.
113 int solib_open (char *in_patname, char **found_pathname);
117 Global variable SOLIB_ABSOLUTE_PREFIX is used as a prefix directory
118 to search for shared libraries if they have an absolute path.
120 Global variable SOLIB_SEARCH_PATH is used as a prefix directory
121 (or set of directories, as in LD_LIBRARY_PATH) to search for all
122 shared libraries if not found in SOLIB_ABSOLUTE_PREFIX.
125 * If there is a solib_absolute_prefix and path is absolute:
126 * Search for solib_absolute_prefix/path.
128 * Look for it literally (unmodified).
129 * Look in SOLIB_SEARCH_PATH.
130 * If available, use target defined search function.
131 * If solib_absolute_prefix is NOT set, perform the following two searches:
132 * Look in inferior's $PATH.
133 * Look in inferior's $LD_LIBRARY_PATH.
135 * The last check avoids doing this search when targetting remote
136 * machines since solib_absolute_prefix will almost always be set.
140 file handle for opened solib, or -1 for failure. */
143 solib_open (char *in_pathname
, char **found_pathname
)
145 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
147 char *temp_pathname
= NULL
;
148 char *p
= in_pathname
;
149 int solib_absolute_prefix_is_empty
;
151 solib_absolute_prefix_is_empty
= (solib_absolute_prefix
== NULL
152 || *solib_absolute_prefix
== 0);
154 if (! IS_ABSOLUTE_PATH (in_pathname
) || solib_absolute_prefix_is_empty
)
155 temp_pathname
= in_pathname
;
158 int prefix_len
= strlen (solib_absolute_prefix
);
160 /* Remove trailing slashes from absolute prefix. */
161 while (prefix_len
> 0
162 && IS_DIR_SEPARATOR (solib_absolute_prefix
[prefix_len
- 1]))
165 /* Cat the prefixed pathname together. */
166 temp_pathname
= alloca (prefix_len
+ strlen (in_pathname
) + 1);
167 strncpy (temp_pathname
, solib_absolute_prefix
, prefix_len
);
168 temp_pathname
[prefix_len
] = '\0';
169 strcat (temp_pathname
, in_pathname
);
172 /* Now see if we can open it. */
173 found_file
= open (temp_pathname
, O_RDONLY
| O_BINARY
, 0);
175 /* If the search in solib_absolute_prefix failed, and the path name is
176 absolute at this point, make it relative. (openp will try and open the
177 file according to its absolute path otherwise, which is not what we want.)
178 Affects subsequent searches for this solib. */
179 if (found_file
< 0 && IS_ABSOLUTE_PATH (in_pathname
))
181 /* First, get rid of any drive letters etc. */
182 while (!IS_DIR_SEPARATOR (*in_pathname
))
185 /* Next, get rid of all leading dir separators. */
186 while (IS_DIR_SEPARATOR (*in_pathname
))
190 /* If not found, search the solib_search_path (if any). */
191 if (found_file
< 0 && solib_search_path
!= NULL
)
192 found_file
= openp (solib_search_path
, OPF_TRY_CWD_FIRST
,
193 in_pathname
, O_RDONLY
| O_BINARY
, 0, &temp_pathname
);
195 /* If not found, next search the solib_search_path (if any) for the basename
196 only (ignoring the path). This is to allow reading solibs from a path
197 that differs from the opened path. */
198 if (found_file
< 0 && solib_search_path
!= NULL
)
199 found_file
= openp (solib_search_path
, OPF_TRY_CWD_FIRST
,
200 lbasename (in_pathname
), O_RDONLY
| O_BINARY
, 0,
203 /* If not found, try to use target supplied solib search method */
204 if (found_file
< 0 && ops
->find_and_open_solib
)
205 found_file
= ops
->find_and_open_solib (in_pathname
, O_RDONLY
| O_BINARY
,
208 /* If not found, next search the inferior's $PATH environment variable. */
209 if (found_file
< 0 && solib_absolute_prefix_is_empty
)
210 found_file
= openp (get_in_environ (inferior_environ
, "PATH"),
211 OPF_TRY_CWD_FIRST
, in_pathname
, O_RDONLY
| O_BINARY
, 0,
214 /* If not found, next search the inferior's $LD_LIBRARY_PATH
215 environment variable. */
216 if (found_file
< 0 && solib_absolute_prefix_is_empty
)
217 found_file
= openp (get_in_environ (inferior_environ
, "LD_LIBRARY_PATH"),
218 OPF_TRY_CWD_FIRST
, in_pathname
, O_RDONLY
| O_BINARY
, 0,
221 /* Done. If not found, tough luck. Return found_file and
222 (optionally) found_pathname. */
223 if (found_pathname
!= NULL
&& temp_pathname
!= NULL
)
224 *found_pathname
= xstrdup (temp_pathname
);
233 solib_map_sections -- open bfd and build sections for shared lib
237 static int solib_map_sections (struct so_list *so)
241 Given a pointer to one of the shared objects in our list
242 of mapped objects, use the recorded name to open a bfd
243 descriptor for the object, build a section table, and then
244 relocate all the section addresses by the base address at
245 which the shared object was mapped.
249 In most (all?) cases the shared object file name recorded in the
250 dynamic linkage tables will be a fully qualified pathname. For
251 cases where it isn't, do we really mimic the systems search
252 mechanism correctly in the below code (particularly the tilde
257 solib_map_sections (void *arg
)
259 struct so_list
*so
= (struct so_list
*) arg
; /* catch_errors bogon */
261 char *scratch_pathname
;
263 struct section_table
*p
;
264 struct cleanup
*old_chain
;
267 filename
= tilde_expand (so
->so_name
);
269 old_chain
= make_cleanup (xfree
, filename
);
270 scratch_chan
= solib_open (filename
, &scratch_pathname
);
272 if (scratch_chan
< 0)
274 perror_with_name (filename
);
277 /* Leave scratch_pathname allocated. abfd->name will point to it. */
278 abfd
= bfd_fopen (scratch_pathname
, gnutarget
, FOPEN_RB
, scratch_chan
);
281 close (scratch_chan
);
282 error (_("Could not open `%s' as an executable file: %s"),
283 scratch_pathname
, bfd_errmsg (bfd_get_error ()));
286 /* Leave bfd open, core_xfer_memory and "info files" need it. */
288 bfd_set_cacheable (abfd
, 1);
290 /* copy full path name into so_name, so that later symbol_file_add
292 if (strlen (scratch_pathname
) >= SO_NAME_MAX_PATH_SIZE
)
293 error (_("Full path name length of shared library exceeds SO_NAME_MAX_PATH_SIZE in so_list structure."));
294 strcpy (so
->so_name
, scratch_pathname
);
296 if (!bfd_check_format (abfd
, bfd_object
))
298 error (_("\"%s\": not in executable format: %s."),
299 scratch_pathname
, bfd_errmsg (bfd_get_error ()));
301 if (build_section_table (abfd
, &so
->sections
, &so
->sections_end
))
303 error (_("Can't find the file sections in `%s': %s"),
304 bfd_get_filename (abfd
), bfd_errmsg (bfd_get_error ()));
307 for (p
= so
->sections
; p
< so
->sections_end
; p
++)
309 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
311 /* Relocate the section binding addresses as recorded in the shared
312 object's file by the base address to which the object was actually
314 ops
->relocate_section_addresses (so
, p
);
315 if (strcmp (p
->the_bfd_section
->name
, ".text") == 0)
321 /* Free the file names, close the file now. */
322 do_cleanups (old_chain
);
329 free_so --- free a `struct so_list' object
333 void free_so (struct so_list *so)
337 Free the storage associated with the `struct so_list' object SO.
338 If we have opened a BFD for SO, close it.
340 The caller is responsible for removing SO from whatever list it is
341 a member of. If we have placed SO's sections in some target's
342 section table, the caller is responsible for removing them.
344 This function doesn't mess with objfiles at all. If there is an
345 objfile associated with SO that needs to be removed, the caller is
346 responsible for taking care of that. */
349 free_so (struct so_list
*so
)
351 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
352 char *bfd_filename
= 0;
355 xfree (so
->sections
);
359 bfd_filename
= bfd_get_filename (so
->abfd
);
360 if (! bfd_close (so
->abfd
))
361 warning (_("cannot close \"%s\": %s"),
362 bfd_filename
, bfd_errmsg (bfd_get_error ()));
366 xfree (bfd_filename
);
374 /* Return address of first so_list entry in master shared object list. */
376 master_so_list (void)
382 /* A small stub to get us past the arg-passing pinhole of catch_errors. */
385 symbol_add_stub (void *arg
)
387 struct so_list
*so
= (struct so_list
*) arg
; /* catch_errs bogon */
388 struct section_addr_info
*sap
;
390 /* Have we already loaded this shared object? */
391 ALL_OBJFILES (so
->objfile
)
393 if (strcmp (so
->objfile
->name
, so
->so_name
) == 0)
397 sap
= build_section_addr_info_from_section_table (so
->sections
,
400 so
->objfile
= symbol_file_add (so
->so_name
, so
->from_tty
,
401 sap
, 0, OBJF_SHARED
);
402 free_section_addr_info (sap
);
407 /* Read in symbols for shared object SO. If FROM_TTY is non-zero, be
408 chatty about it. Return non-zero if any symbols were actually
412 solib_read_symbols (struct so_list
*so
, int from_tty
)
414 if (so
->symbols_loaded
)
417 printf_unfiltered (_("Symbols already loaded for %s\n"), so
->so_name
);
419 else if (so
->abfd
== NULL
)
422 printf_unfiltered (_("Symbol file not found for %s\n"), so
->so_name
);
426 if (catch_errors (symbol_add_stub
, so
,
427 "Error while reading shared library symbols:\n",
431 printf_unfiltered (_("Loaded symbols for %s\n"), so
->so_name
);
432 so
->symbols_loaded
= 1;
442 update_solib_list --- synchronize GDB's shared object list with inferior's
446 void update_solib_list (int from_tty, struct target_ops *TARGET)
448 Extract the list of currently loaded shared objects from the
449 inferior, and compare it with the list of shared objects currently
450 in GDB's so_list_head list. Edit so_list_head to bring it in sync
451 with the inferior's new list.
453 If we notice that the inferior has unloaded some shared objects,
454 free any symbolic info GDB had read about those shared objects.
456 Don't load symbolic info for any new shared objects; just add them
457 to the list, and leave their symbols_loaded flag clear.
459 If FROM_TTY is non-null, feel free to print messages about what
462 If TARGET is non-null, add the sections of all new shared objects
463 to TARGET's section table. Note that this doesn't remove any
464 sections for shared objects that have been unloaded, and it
465 doesn't check to see if the new shared objects are already present in
466 the section table. But we only use this for core files and
467 processes we've just attached to, so that's okay. */
470 update_solib_list (int from_tty
, struct target_ops
*target
)
472 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
473 struct so_list
*inferior
= ops
->current_sos();
474 struct so_list
*gdb
, **gdb_link
;
476 /* If we are attaching to a running process for which we
477 have not opened a symbol file, we may be able to get its
480 symfile_objfile
== NULL
)
481 catch_errors (ops
->open_symbol_file_object
, &from_tty
,
482 "Error reading attached process's symbol file.\n",
485 /* Since this function might actually add some elements to the
486 so_list_head list, arrange for it to be cleaned up when
488 if (!solib_cleanup_queued
)
490 make_run_cleanup (do_clear_solib
, NULL
);
491 solib_cleanup_queued
= 1;
494 /* GDB and the inferior's dynamic linker each maintain their own
495 list of currently loaded shared objects; we want to bring the
496 former in sync with the latter. Scan both lists, seeing which
497 shared objects appear where. There are three cases:
499 - A shared object appears on both lists. This means that GDB
500 knows about it already, and it's still loaded in the inferior.
501 Nothing needs to happen.
503 - A shared object appears only on GDB's list. This means that
504 the inferior has unloaded it. We should remove the shared
505 object from GDB's tables.
507 - A shared object appears only on the inferior's list. This
508 means that it's just been loaded. We should add it to GDB's
511 So we walk GDB's list, checking each entry to see if it appears
512 in the inferior's list too. If it does, no action is needed, and
513 we remove it from the inferior's list. If it doesn't, the
514 inferior has unloaded it, and we remove it from GDB's list. By
515 the time we're done walking GDB's list, the inferior's list
516 contains only the new shared objects, which we then add. */
519 gdb_link
= &so_list_head
;
522 struct so_list
*i
= inferior
;
523 struct so_list
**i_link
= &inferior
;
525 /* Check to see whether the shared object *gdb also appears in
526 the inferior's current list. */
529 if (! strcmp (gdb
->so_original_name
, i
->so_original_name
))
536 /* If the shared object appears on the inferior's list too, then
537 it's still loaded, so we don't need to do anything. Delete
538 it from the inferior's list, and leave it on GDB's list. */
543 gdb_link
= &gdb
->next
;
547 /* If it's not on the inferior's list, remove it from GDB's tables. */
550 /* Notify any observer that the shared object has been
551 unloaded before we remove it from GDB's tables. */
552 observer_notify_solib_unloaded (gdb
);
554 *gdb_link
= gdb
->next
;
556 /* Unless the user loaded it explicitly, free SO's objfile. */
557 if (gdb
->objfile
&& ! (gdb
->objfile
->flags
& OBJF_USERLOADED
))
558 free_objfile (gdb
->objfile
);
560 /* Some targets' section tables might be referring to
561 sections from so->abfd; remove them. */
562 remove_target_sections (gdb
->abfd
);
569 /* Now the inferior's list contains only shared objects that don't
570 appear in GDB's list --- those that are newly loaded. Add them
571 to GDB's shared object list. */
576 /* Add the new shared objects to GDB's list. */
577 *gdb_link
= inferior
;
579 /* Fill in the rest of each of the `struct so_list' nodes. */
580 for (i
= inferior
; i
; i
= i
->next
)
582 i
->from_tty
= from_tty
;
584 /* Fill in the rest of the `struct so_list' node. */
585 catch_errors (solib_map_sections
, i
,
586 "Error while mapping shared library sections:\n",
589 /* If requested, add the shared object's sections to the TARGET's
590 section table. Do this immediately after mapping the object so
591 that later nodes in the list can query this object, as is needed
595 int count
= (i
->sections_end
- i
->sections
);
598 int space
= target_resize_to_sections (target
, count
);
599 memcpy (target
->to_sections
+ space
,
601 count
* sizeof (i
->sections
[0]));
605 /* Notify any observer that the shared object has been
606 loaded now that we've added it to GDB's tables. */
607 observer_notify_solib_loaded (i
);
612 /* Return non-zero if SO is the libpthread shared library.
614 Uses a fairly simplistic heuristic approach where we check
615 the file name against "/libpthread". This can lead to false
616 positives, but this should be good enough in practice. */
619 libpthread_solib_p (struct so_list
*so
)
621 return (strstr (so
->so_name
, "/libpthread") != NULL
);
626 solib_add -- read in symbol info for newly added shared libraries
630 void solib_add (char *pattern, int from_tty, struct target_ops
631 *TARGET, int readsyms)
635 Read in symbolic information for any shared objects whose names
636 match PATTERN. (If we've already read a shared object's symbol
637 info, leave it alone.) If PATTERN is zero, read them all.
639 If READSYMS is 0, defer reading symbolic information until later
640 but still do any needed low level processing.
642 FROM_TTY and TARGET are as described for update_solib_list, above. */
645 solib_add (char *pattern
, int from_tty
, struct target_ops
*target
, int readsyms
)
651 char *re_err
= re_comp (pattern
);
654 error (_("Invalid regexp: %s"), re_err
);
657 update_solib_list (from_tty
, target
);
659 /* Walk the list of currently loaded shared libraries, and read
660 symbols for any that match the pattern --- or any whose symbols
661 aren't already loaded, if no pattern was given. */
664 int loaded_any_symbols
= 0;
666 for (gdb
= so_list_head
; gdb
; gdb
= gdb
->next
)
667 if (! pattern
|| re_exec (gdb
->so_name
))
669 /* Normally, we would read the symbols from that library
670 only if READSYMS is set. However, we're making a small
671 exception for the pthread library, because we sometimes
672 need the library symbols to be loaded in order to provide
673 thread support (x86-linux for instance). */
674 const int add_this_solib
=
675 (readsyms
|| libpthread_solib_p (gdb
));
678 if (add_this_solib
&& solib_read_symbols (gdb
, from_tty
))
679 loaded_any_symbols
= 1;
682 if (from_tty
&& pattern
&& ! any_matches
)
684 ("No loaded shared libraries match the pattern `%s'.\n", pattern
);
686 if (loaded_any_symbols
)
688 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
690 /* Getting new symbols may change our opinion about what is
692 reinit_frame_cache ();
694 ops
->special_symbol_handling ();
704 info_sharedlibrary_command -- code for "info sharedlibrary"
708 static void info_sharedlibrary_command ()
712 Walk through the shared library list and print information
713 about each attached library.
717 info_sharedlibrary_command (char *ignore
, int from_tty
)
719 struct so_list
*so
= NULL
; /* link map state variable */
723 /* "0x", a little whitespace, and two hex digits per byte of pointers. */
724 addr_width
= 4 + (TARGET_PTR_BIT
/ 4);
726 update_solib_list (from_tty
, 0);
728 for (so
= so_list_head
; so
; so
= so
->next
)
734 printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width
, "From",
735 addr_width
, "To", "Syms Read",
736 "Shared Object Library");
740 printf_unfiltered ("%-*s", addr_width
,
741 so
->textsection
!= NULL
742 ? hex_string_custom (
743 (LONGEST
) so
->textsection
->addr
,
746 printf_unfiltered ("%-*s", addr_width
,
747 so
->textsection
!= NULL
748 ? hex_string_custom (
749 (LONGEST
) so
->textsection
->endaddr
,
752 printf_unfiltered ("%-12s", so
->symbols_loaded
? "Yes" : "No");
753 printf_unfiltered ("%s\n", so
->so_name
);
756 if (so_list_head
== NULL
)
758 printf_unfiltered (_("No shared libraries loaded at this time.\n"));
766 solib_address -- check to see if an address is in a shared lib
770 char * solib_address (CORE_ADDR address)
774 Provides a hook for other gdb routines to discover whether or
775 not a particular address is within the mapped address space of
778 For example, this routine is called at one point to disable
779 breakpoints which are in shared libraries that are not currently
784 solib_address (CORE_ADDR address
)
786 struct so_list
*so
= 0; /* link map state variable */
788 for (so
= so_list_head
; so
; so
= so
->next
)
790 struct section_table
*p
;
792 for (p
= so
->sections
; p
< so
->sections_end
; p
++)
794 if (p
->addr
<= address
&& address
< p
->endaddr
)
795 return (so
->so_name
);
802 /* Called by free_all_symtabs */
807 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
809 /* This function is expected to handle ELF shared libraries. It is
810 also used on Solaris, which can run either ELF or a.out binaries
811 (for compatibility with SunOS 4), both of which can use shared
812 libraries. So we don't know whether we have an ELF executable or
813 an a.out executable until the user chooses an executable file.
815 ELF shared libraries don't get mapped into the address space
816 until after the program starts, so we'd better not try to insert
817 breakpoints in them immediately. We have to wait until the
818 dynamic linker has loaded them; we'll hit a bp_shlib_event
819 breakpoint (look for calls to create_solib_event_breakpoint) when
822 SunOS shared libraries seem to be different --- they're present
823 as soon as the process begins execution, so there's no need to
824 put off inserting breakpoints. There's also nowhere to put a
825 bp_shlib_event breakpoint, so if we put it off, we'll never get
828 So: disable breakpoints only if we're using ELF shared libs. */
830 && bfd_get_flavour (exec_bfd
) != bfd_target_aout_flavour
)
831 disable_breakpoints_in_shlibs (1);
835 struct so_list
*so
= so_list_head
;
836 so_list_head
= so
->next
;
838 remove_target_sections (so
->abfd
);
846 do_clear_solib (void *dummy
)
848 solib_cleanup_queued
= 0;
854 solib_create_inferior_hook -- shared library startup support
858 void solib_create_inferior_hook ()
862 When gdb starts up the inferior, it nurses it along (through the
863 shell) until it is ready to execute it's first instruction. At this
864 point, this function gets called via expansion of the macro
865 SOLIB_CREATE_INFERIOR_HOOK. */
868 solib_create_inferior_hook (void)
870 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
871 ops
->solib_create_inferior_hook();
876 in_solib_dynsym_resolve_code -- check to see if an address is in
877 dynamic loader's dynamic symbol
882 int in_solib_dynsym_resolve_code (CORE_ADDR pc)
886 Determine if PC is in the dynamic linker's symbol resolution
887 code. Return 1 if so, 0 otherwise.
891 in_solib_dynsym_resolve_code (CORE_ADDR pc
)
893 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
894 return ops
->in_dynsym_resolve_code (pc
);
901 sharedlibrary_command -- handle command to explicitly add library
905 static void sharedlibrary_command (char *args, int from_tty)
912 sharedlibrary_command (char *args
, int from_tty
)
915 solib_add (args
, from_tty
, (struct target_ops
*) 0, 1);
920 no_shared_libraries -- handle command to explicitly discard symbols
921 from shared libraries.
925 Implements the command "nosharedlibrary", which discards symbols
926 that have been auto-loaded from shared libraries. Symbols from
927 shared libraries that were added by explicit request of the user
928 are not discarded. Also called from remote.c. */
931 no_shared_libraries (char *ignored
, int from_tty
)
933 objfile_purge_solibs ();
934 do_clear_solib (NULL
);
938 reload_shared_libraries (char *ignored
, int from_tty
,
939 struct cmd_list_element
*e
)
941 no_shared_libraries (NULL
, from_tty
);
942 solib_add (NULL
, from_tty
, NULL
, auto_solib_add
);
946 show_auto_solib_add (struct ui_file
*file
, int from_tty
,
947 struct cmd_list_element
*c
, const char *value
)
949 fprintf_filtered (file
, _("Autoloading of shared library symbols is %s.\n"),
954 extern initialize_file_ftype _initialize_solib
; /* -Wmissing-prototypes */
957 _initialize_solib (void)
959 struct cmd_list_element
*c
;
961 solib_data
= gdbarch_data_register_pre_init (solib_init
);
963 add_com ("sharedlibrary", class_files
, sharedlibrary_command
,
964 _("Load shared object library symbols for files matching REGEXP."));
965 add_info ("sharedlibrary", info_sharedlibrary_command
,
966 _("Status of loaded shared object libraries."));
967 add_com ("nosharedlibrary", class_files
, no_shared_libraries
,
968 _("Unload all shared object library symbols."));
970 add_setshow_boolean_cmd ("auto-solib-add", class_support
,
971 &auto_solib_add
, _("\
972 Set autoloading of shared library symbols."), _("\
973 Show autoloading of shared library symbols."), _("\
974 If \"on\", symbols from all shared object libraries will be loaded\n\
975 automatically when the inferior begins execution, when the dynamic linker\n\
976 informs gdb that a new library has been loaded, or when attaching to the\n\
977 inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'."),
980 &setlist
, &showlist
);
982 add_setshow_filename_cmd ("solib-absolute-prefix", class_support
,
983 &solib_absolute_prefix
, _("\
984 Set prefix for loading absolute shared library symbol files."), _("\
985 Show prefix for loading absolute shared library symbol files."), _("\
986 For other (relative) files, you can add values using `set solib-search-path'."),
987 reload_shared_libraries
,
989 &setlist
, &showlist
);
991 /* Set the default value of "solib-absolute-prefix" from the sysroot, if
993 solib_absolute_prefix
= xstrdup (gdb_sysroot
);
995 add_setshow_optional_filename_cmd ("solib-search-path", class_support
,
996 &solib_search_path
, _("\
997 Set the search path for loading non-absolute shared library symbol files."), _("\
998 Show the search path for loading non-absolute shared library symbol files."), _("\
999 This takes precedence over the environment variables PATH and LD_LIBRARY_PATH."),
1000 reload_shared_libraries
,
1001 show_solib_search_path
,
1002 &setlist
, &showlist
);