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
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 while (*p
&& !IS_DIR_SEPARATOR (*p
))
159 if (! IS_ABSOLUTE_PATH (in_pathname
) || solib_absolute_prefix_is_empty
)
160 temp_pathname
= in_pathname
;
163 int prefix_len
= strlen (solib_absolute_prefix
);
165 /* Remove trailing slashes from absolute prefix. */
166 while (prefix_len
> 0
167 && IS_DIR_SEPARATOR (solib_absolute_prefix
[prefix_len
- 1]))
170 /* Cat the prefixed pathname together. */
171 temp_pathname
= alloca (prefix_len
+ strlen (in_pathname
) + 1);
172 strncpy (temp_pathname
, solib_absolute_prefix
, prefix_len
);
173 temp_pathname
[prefix_len
] = '\0';
174 strcat (temp_pathname
, in_pathname
);
177 /* Now see if we can open it. */
178 found_file
= open (temp_pathname
, O_RDONLY
| O_BINARY
, 0);
181 /* If the search in solib_absolute_prefix failed, and the path name is
182 absolute at this point, make it relative. (openp will try and open the
183 file according to its absolute path otherwise, which is not what we want.)
184 Affects subsequent searches for this solib. */
185 if (found_file
< 0 && IS_ABSOLUTE_PATH (in_pathname
))
187 /* First, get rid of any drive letters etc. */
188 while (!IS_DIR_SEPARATOR (*in_pathname
))
191 /* Next, get rid of all leading dir separators. */
192 while (IS_DIR_SEPARATOR (*in_pathname
))
196 /* If not found, search the solib_search_path (if any). */
197 if (found_file
< 0 && solib_search_path
!= NULL
)
198 found_file
= openp (solib_search_path
, OPF_TRY_CWD_FIRST
,
199 in_pathname
, O_RDONLY
| O_BINARY
, 0, &temp_pathname
);
201 /* If not found, next search the solib_search_path (if any) for the basename
202 only (ignoring the path). This is to allow reading solibs from a path
203 that differs from the opened path. */
204 if (found_file
< 0 && solib_search_path
!= NULL
)
205 found_file
= openp (solib_search_path
, OPF_TRY_CWD_FIRST
,
206 lbasename (in_pathname
), O_RDONLY
| O_BINARY
, 0,
209 /* If not found, try to use target supplied solib search method */
210 if (found_file
< 0 && ops
->find_and_open_solib
)
211 found_file
= ops
->find_and_open_solib (in_pathname
, O_RDONLY
| O_BINARY
,
214 /* If not found, next search the inferior's $PATH environment variable. */
215 if (found_file
< 0 && solib_absolute_prefix_is_empty
)
216 found_file
= openp (get_in_environ (inferior_environ
, "PATH"),
217 OPF_TRY_CWD_FIRST
, in_pathname
, O_RDONLY
| O_BINARY
, 0,
220 /* If not found, next search the inferior's $LD_LIBRARY_PATH
221 environment variable. */
222 if (found_file
< 0 && solib_absolute_prefix_is_empty
)
223 found_file
= openp (get_in_environ (inferior_environ
, "LD_LIBRARY_PATH"),
224 OPF_TRY_CWD_FIRST
, in_pathname
, O_RDONLY
| O_BINARY
, 0,
227 /* Done. If not found, tough luck. Return found_file and
228 (optionally) found_pathname. */
229 if (found_pathname
!= NULL
&& temp_pathname
!= NULL
)
230 *found_pathname
= xstrdup (temp_pathname
);
239 solib_map_sections -- open bfd and build sections for shared lib
243 static int solib_map_sections (struct so_list *so)
247 Given a pointer to one of the shared objects in our list
248 of mapped objects, use the recorded name to open a bfd
249 descriptor for the object, build a section table, and then
250 relocate all the section addresses by the base address at
251 which the shared object was mapped.
255 In most (all?) cases the shared object file name recorded in the
256 dynamic linkage tables will be a fully qualified pathname. For
257 cases where it isn't, do we really mimic the systems search
258 mechanism correctly in the below code (particularly the tilde
263 solib_map_sections (void *arg
)
265 struct so_list
*so
= (struct so_list
*) arg
; /* catch_errors bogon */
267 char *scratch_pathname
;
269 struct section_table
*p
;
270 struct cleanup
*old_chain
;
273 filename
= tilde_expand (so
->so_name
);
275 old_chain
= make_cleanup (xfree
, filename
);
276 scratch_chan
= solib_open (filename
, &scratch_pathname
);
278 if (scratch_chan
< 0)
280 perror_with_name (filename
);
283 /* Leave scratch_pathname allocated. abfd->name will point to it. */
284 abfd
= bfd_fopen (scratch_pathname
, gnutarget
, FOPEN_RB
, scratch_chan
);
287 close (scratch_chan
);
288 error (_("Could not open `%s' as an executable file: %s"),
289 scratch_pathname
, bfd_errmsg (bfd_get_error ()));
292 /* Leave bfd open, core_xfer_memory and "info files" need it. */
294 bfd_set_cacheable (abfd
, 1);
296 /* copy full path name into so_name, so that later symbol_file_add
298 if (strlen (scratch_pathname
) >= SO_NAME_MAX_PATH_SIZE
)
299 error (_("Full path name length of shared library exceeds SO_NAME_MAX_PATH_SIZE in so_list structure."));
300 strcpy (so
->so_name
, scratch_pathname
);
302 if (!bfd_check_format (abfd
, bfd_object
))
304 error (_("\"%s\": not in executable format: %s."),
305 scratch_pathname
, bfd_errmsg (bfd_get_error ()));
307 if (build_section_table (abfd
, &so
->sections
, &so
->sections_end
))
309 error (_("Can't find the file sections in `%s': %s"),
310 bfd_get_filename (abfd
), bfd_errmsg (bfd_get_error ()));
313 for (p
= so
->sections
; p
< so
->sections_end
; p
++)
315 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
317 /* Relocate the section binding addresses as recorded in the shared
318 object's file by the base address to which the object was actually
320 ops
->relocate_section_addresses (so
, p
);
321 if (strcmp (p
->the_bfd_section
->name
, ".text") == 0)
327 /* Free the file names, close the file now. */
328 do_cleanups (old_chain
);
335 free_so --- free a `struct so_list' object
339 void free_so (struct so_list *so)
343 Free the storage associated with the `struct so_list' object SO.
344 If we have opened a BFD for SO, close it.
346 The caller is responsible for removing SO from whatever list it is
347 a member of. If we have placed SO's sections in some target's
348 section table, the caller is responsible for removing them.
350 This function doesn't mess with objfiles at all. If there is an
351 objfile associated with SO that needs to be removed, the caller is
352 responsible for taking care of that. */
355 free_so (struct so_list
*so
)
357 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
358 char *bfd_filename
= 0;
361 xfree (so
->sections
);
365 bfd_filename
= bfd_get_filename (so
->abfd
);
366 if (! bfd_close (so
->abfd
))
367 warning (_("cannot close \"%s\": %s"),
368 bfd_filename
, bfd_errmsg (bfd_get_error ()));
372 xfree (bfd_filename
);
380 /* Return address of first so_list entry in master shared object list. */
382 master_so_list (void)
388 /* A small stub to get us past the arg-passing pinhole of catch_errors. */
391 symbol_add_stub (void *arg
)
393 struct so_list
*so
= (struct so_list
*) arg
; /* catch_errs bogon */
394 struct section_addr_info
*sap
;
396 /* Have we already loaded this shared object? */
397 ALL_OBJFILES (so
->objfile
)
399 if (strcmp (so
->objfile
->name
, so
->so_name
) == 0)
403 sap
= build_section_addr_info_from_section_table (so
->sections
,
406 so
->objfile
= symbol_file_add (so
->so_name
, so
->from_tty
,
407 sap
, 0, OBJF_SHARED
);
408 free_section_addr_info (sap
);
413 /* Read in symbols for shared object SO. If FROM_TTY is non-zero, be
414 chatty about it. Return non-zero if any symbols were actually
418 solib_read_symbols (struct so_list
*so
, int from_tty
)
420 if (so
->symbols_loaded
)
423 printf_unfiltered (_("Symbols already loaded for %s\n"), so
->so_name
);
425 else if (so
->abfd
== NULL
)
428 printf_unfiltered (_("Symbol file not found for %s\n"), so
->so_name
);
432 if (catch_errors (symbol_add_stub
, so
,
433 "Error while reading shared library symbols:\n",
437 printf_unfiltered (_("Loaded symbols for %s\n"), so
->so_name
);
438 so
->symbols_loaded
= 1;
448 update_solib_list --- synchronize GDB's shared object list with inferior's
452 void update_solib_list (int from_tty, struct target_ops *TARGET)
454 Extract the list of currently loaded shared objects from the
455 inferior, and compare it with the list of shared objects currently
456 in GDB's so_list_head list. Edit so_list_head to bring it in sync
457 with the inferior's new list.
459 If we notice that the inferior has unloaded some shared objects,
460 free any symbolic info GDB had read about those shared objects.
462 Don't load symbolic info for any new shared objects; just add them
463 to the list, and leave their symbols_loaded flag clear.
465 If FROM_TTY is non-null, feel free to print messages about what
468 If TARGET is non-null, add the sections of all new shared objects
469 to TARGET's section table. Note that this doesn't remove any
470 sections for shared objects that have been unloaded, and it
471 doesn't check to see if the new shared objects are already present in
472 the section table. But we only use this for core files and
473 processes we've just attached to, so that's okay. */
476 update_solib_list (int from_tty
, struct target_ops
*target
)
478 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
479 struct so_list
*inferior
= ops
->current_sos();
480 struct so_list
*gdb
, **gdb_link
;
482 /* If we are attaching to a running process for which we
483 have not opened a symbol file, we may be able to get its
486 symfile_objfile
== NULL
)
487 catch_errors (ops
->open_symbol_file_object
, &from_tty
,
488 "Error reading attached process's symbol file.\n",
491 /* Since this function might actually add some elements to the
492 so_list_head list, arrange for it to be cleaned up when
494 if (!solib_cleanup_queued
)
496 make_run_cleanup (do_clear_solib
, NULL
);
497 solib_cleanup_queued
= 1;
500 /* GDB and the inferior's dynamic linker each maintain their own
501 list of currently loaded shared objects; we want to bring the
502 former in sync with the latter. Scan both lists, seeing which
503 shared objects appear where. There are three cases:
505 - A shared object appears on both lists. This means that GDB
506 knows about it already, and it's still loaded in the inferior.
507 Nothing needs to happen.
509 - A shared object appears only on GDB's list. This means that
510 the inferior has unloaded it. We should remove the shared
511 object from GDB's tables.
513 - A shared object appears only on the inferior's list. This
514 means that it's just been loaded. We should add it to GDB's
517 So we walk GDB's list, checking each entry to see if it appears
518 in the inferior's list too. If it does, no action is needed, and
519 we remove it from the inferior's list. If it doesn't, the
520 inferior has unloaded it, and we remove it from GDB's list. By
521 the time we're done walking GDB's list, the inferior's list
522 contains only the new shared objects, which we then add. */
525 gdb_link
= &so_list_head
;
528 struct so_list
*i
= inferior
;
529 struct so_list
**i_link
= &inferior
;
531 /* Check to see whether the shared object *gdb also appears in
532 the inferior's current list. */
535 if (! strcmp (gdb
->so_original_name
, i
->so_original_name
))
542 /* If the shared object appears on the inferior's list too, then
543 it's still loaded, so we don't need to do anything. Delete
544 it from the inferior's list, and leave it on GDB's list. */
549 gdb_link
= &gdb
->next
;
553 /* If it's not on the inferior's list, remove it from GDB's tables. */
556 /* Notify any observer that the shared object has been
557 unloaded before we remove it from GDB's tables. */
558 observer_notify_solib_unloaded (gdb
);
560 *gdb_link
= gdb
->next
;
562 /* Unless the user loaded it explicitly, free SO's objfile. */
563 if (gdb
->objfile
&& ! (gdb
->objfile
->flags
& OBJF_USERLOADED
))
564 free_objfile (gdb
->objfile
);
566 /* Some targets' section tables might be referring to
567 sections from so->abfd; remove them. */
568 remove_target_sections (gdb
->abfd
);
575 /* Now the inferior's list contains only shared objects that don't
576 appear in GDB's list --- those that are newly loaded. Add them
577 to GDB's shared object list. */
582 /* Add the new shared objects to GDB's list. */
583 *gdb_link
= inferior
;
585 /* Fill in the rest of each of the `struct so_list' nodes. */
586 for (i
= inferior
; i
; i
= i
->next
)
588 i
->from_tty
= from_tty
;
590 /* Fill in the rest of the `struct so_list' node. */
591 catch_errors (solib_map_sections
, i
,
592 "Error while mapping shared library sections:\n",
595 /* If requested, add the shared object's sections to the TARGET's
596 section table. Do this immediately after mapping the object so
597 that later nodes in the list can query this object, as is needed
601 int count
= (i
->sections_end
- i
->sections
);
604 int space
= target_resize_to_sections (target
, count
);
605 memcpy (target
->to_sections
+ space
,
607 count
* sizeof (i
->sections
[0]));
611 /* Notify any observer that the shared object has been
612 loaded now that we've added it to GDB's tables. */
613 observer_notify_solib_loaded (i
);
621 solib_add -- read in symbol info for newly added shared libraries
625 void solib_add (char *pattern, int from_tty, struct target_ops
626 *TARGET, int readsyms)
630 Read in symbolic information for any shared objects whose names
631 match PATTERN. (If we've already read a shared object's symbol
632 info, leave it alone.) If PATTERN is zero, read them all.
634 If READSYMS is 0, defer reading symbolic information until later
635 but still do any needed low level processing.
637 FROM_TTY and TARGET are as described for update_solib_list, above. */
640 solib_add (char *pattern
, int from_tty
, struct target_ops
*target
, int readsyms
)
646 char *re_err
= re_comp (pattern
);
649 error (_("Invalid regexp: %s"), re_err
);
652 update_solib_list (from_tty
, target
);
654 /* Walk the list of currently loaded shared libraries, and read
655 symbols for any that match the pattern --- or any whose symbols
656 aren't already loaded, if no pattern was given. */
659 int loaded_any_symbols
= 0;
661 for (gdb
= so_list_head
; gdb
; gdb
= gdb
->next
)
662 if (! pattern
|| re_exec (gdb
->so_name
))
665 if (readsyms
&& solib_read_symbols (gdb
, from_tty
))
666 loaded_any_symbols
= 1;
669 if (from_tty
&& pattern
&& ! any_matches
)
671 ("No loaded shared libraries match the pattern `%s'.\n", pattern
);
673 if (loaded_any_symbols
)
675 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
677 /* Getting new symbols may change our opinion about what is
679 reinit_frame_cache ();
681 ops
->special_symbol_handling ();
691 info_sharedlibrary_command -- code for "info sharedlibrary"
695 static void info_sharedlibrary_command ()
699 Walk through the shared library list and print information
700 about each attached library.
704 info_sharedlibrary_command (char *ignore
, int from_tty
)
706 struct so_list
*so
= NULL
; /* link map state variable */
710 /* "0x", a little whitespace, and two hex digits per byte of pointers. */
711 addr_width
= 4 + (TARGET_PTR_BIT
/ 4);
713 update_solib_list (from_tty
, 0);
715 for (so
= so_list_head
; so
; so
= so
->next
)
721 printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width
, "From",
722 addr_width
, "To", "Syms Read",
723 "Shared Object Library");
727 printf_unfiltered ("%-*s", addr_width
,
728 so
->textsection
!= NULL
729 ? hex_string_custom (
730 (LONGEST
) so
->textsection
->addr
,
733 printf_unfiltered ("%-*s", addr_width
,
734 so
->textsection
!= NULL
735 ? hex_string_custom (
736 (LONGEST
) so
->textsection
->endaddr
,
739 printf_unfiltered ("%-12s", so
->symbols_loaded
? "Yes" : "No");
740 printf_unfiltered ("%s\n", so
->so_name
);
743 if (so_list_head
== NULL
)
745 printf_unfiltered (_("No shared libraries loaded at this time.\n"));
753 solib_address -- check to see if an address is in a shared lib
757 char * solib_address (CORE_ADDR address)
761 Provides a hook for other gdb routines to discover whether or
762 not a particular address is within the mapped address space of
765 For example, this routine is called at one point to disable
766 breakpoints which are in shared libraries that are not currently
771 solib_address (CORE_ADDR address
)
773 struct so_list
*so
= 0; /* link map state variable */
775 for (so
= so_list_head
; so
; so
= so
->next
)
777 struct section_table
*p
;
779 for (p
= so
->sections
; p
< so
->sections_end
; p
++)
781 if (p
->addr
<= address
&& address
< p
->endaddr
)
782 return (so
->so_name
);
789 /* Called by free_all_symtabs */
794 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
796 /* This function is expected to handle ELF shared libraries. It is
797 also used on Solaris, which can run either ELF or a.out binaries
798 (for compatibility with SunOS 4), both of which can use shared
799 libraries. So we don't know whether we have an ELF executable or
800 an a.out executable until the user chooses an executable file.
802 ELF shared libraries don't get mapped into the address space
803 until after the program starts, so we'd better not try to insert
804 breakpoints in them immediately. We have to wait until the
805 dynamic linker has loaded them; we'll hit a bp_shlib_event
806 breakpoint (look for calls to create_solib_event_breakpoint) when
809 SunOS shared libraries seem to be different --- they're present
810 as soon as the process begins execution, so there's no need to
811 put off inserting breakpoints. There's also nowhere to put a
812 bp_shlib_event breakpoint, so if we put it off, we'll never get
815 So: disable breakpoints only if we're using ELF shared libs. */
817 && bfd_get_flavour (exec_bfd
) != bfd_target_aout_flavour
)
818 disable_breakpoints_in_shlibs (1);
822 struct so_list
*so
= so_list_head
;
823 so_list_head
= so
->next
;
825 remove_target_sections (so
->abfd
);
833 do_clear_solib (void *dummy
)
835 solib_cleanup_queued
= 0;
841 solib_create_inferior_hook -- shared library startup support
845 void solib_create_inferior_hook ()
849 When gdb starts up the inferior, it nurses it along (through the
850 shell) until it is ready to execute it's first instruction. At this
851 point, this function gets called via expansion of the macro
852 SOLIB_CREATE_INFERIOR_HOOK. */
855 solib_create_inferior_hook (void)
857 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
858 ops
->solib_create_inferior_hook();
863 in_solib_dynsym_resolve_code -- check to see if an address is in
864 dynamic loader's dynamic symbol
869 int in_solib_dynsym_resolve_code (CORE_ADDR pc)
873 Determine if PC is in the dynamic linker's symbol resolution
874 code. Return 1 if so, 0 otherwise.
878 in_solib_dynsym_resolve_code (CORE_ADDR pc
)
880 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
881 return ops
->in_dynsym_resolve_code (pc
);
888 sharedlibrary_command -- handle command to explicitly add library
892 static void sharedlibrary_command (char *args, int from_tty)
899 sharedlibrary_command (char *args
, int from_tty
)
902 solib_add (args
, from_tty
, (struct target_ops
*) 0, 1);
907 no_shared_libraries -- handle command to explicitly discard symbols
908 from shared libraries.
912 Implements the command "nosharedlibrary", which discards symbols
913 that have been auto-loaded from shared libraries. Symbols from
914 shared libraries that were added by explicit request of the user
915 are not discarded. Also called from remote.c. */
918 no_shared_libraries (char *ignored
, int from_tty
)
920 objfile_purge_solibs ();
921 do_clear_solib (NULL
);
925 reload_shared_libraries (char *ignored
, int from_tty
,
926 struct cmd_list_element
*e
)
928 no_shared_libraries (NULL
, from_tty
);
929 solib_add (NULL
, from_tty
, NULL
, auto_solib_add
);
933 show_auto_solib_add (struct ui_file
*file
, int from_tty
,
934 struct cmd_list_element
*c
, const char *value
)
936 fprintf_filtered (file
, _("Autoloading of shared library symbols is %s.\n"),
941 extern initialize_file_ftype _initialize_solib
; /* -Wmissing-prototypes */
944 _initialize_solib (void)
946 struct cmd_list_element
*c
;
948 solib_data
= gdbarch_data_register_pre_init (solib_init
);
950 add_com ("sharedlibrary", class_files
, sharedlibrary_command
,
951 _("Load shared object library symbols for files matching REGEXP."));
952 add_info ("sharedlibrary", info_sharedlibrary_command
,
953 _("Status of loaded shared object libraries."));
954 add_com ("nosharedlibrary", class_files
, no_shared_libraries
,
955 _("Unload all shared object library symbols."));
957 add_setshow_boolean_cmd ("auto-solib-add", class_support
,
958 &auto_solib_add
, _("\
959 Set autoloading of shared library symbols."), _("\
960 Show autoloading of shared library symbols."), _("\
961 If \"on\", symbols from all shared object libraries will be loaded\n\
962 automatically when the inferior begins execution, when the dynamic linker\n\
963 informs gdb that a new library has been loaded, or when attaching to the\n\
964 inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'."),
967 &setlist
, &showlist
);
969 add_setshow_filename_cmd ("solib-absolute-prefix", class_support
,
970 &solib_absolute_prefix
, _("\
971 Set prefix for loading absolute shared library symbol files."), _("\
972 Show prefix for loading absolute shared library symbol files."), _("\
973 For other (relative) files, you can add values using `set solib-search-path'."),
974 reload_shared_libraries
,
976 &setlist
, &showlist
);
978 /* Set the default value of "solib-absolute-prefix" from the sysroot, if
980 solib_absolute_prefix
= xstrdup (gdb_sysroot
);
982 add_setshow_optional_filename_cmd ("solib-search-path", class_support
,
983 &solib_search_path
, _("\
984 Set the search path for loading non-absolute shared library symbol files."), _("\
985 Show the search path for loading non-absolute shared library symbol files."), _("\
986 This takes precedence over the environment variables PATH and LD_LIBRARY_PATH."),
987 reload_shared_libraries
,
988 show_solib_search_path
,
989 &setlist
, &showlist
);