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
);
618 /* Return non-zero if SO is the libpthread shared library.
620 Uses a fairly simplistic heuristic approach where we check
621 the file name against "/libpthread". This can lead to false
622 positives, but this should be good enough in practice. */
625 libpthread_solib_p (struct so_list
*so
)
627 return (strstr (so
->so_name
, "/libpthread") != NULL
);
632 solib_add -- read in symbol info for newly added shared libraries
636 void solib_add (char *pattern, int from_tty, struct target_ops
637 *TARGET, int readsyms)
641 Read in symbolic information for any shared objects whose names
642 match PATTERN. (If we've already read a shared object's symbol
643 info, leave it alone.) If PATTERN is zero, read them all.
645 If READSYMS is 0, defer reading symbolic information until later
646 but still do any needed low level processing.
648 FROM_TTY and TARGET are as described for update_solib_list, above. */
651 solib_add (char *pattern
, int from_tty
, struct target_ops
*target
, int readsyms
)
657 char *re_err
= re_comp (pattern
);
660 error (_("Invalid regexp: %s"), re_err
);
663 update_solib_list (from_tty
, target
);
665 /* Walk the list of currently loaded shared libraries, and read
666 symbols for any that match the pattern --- or any whose symbols
667 aren't already loaded, if no pattern was given. */
670 int loaded_any_symbols
= 0;
672 for (gdb
= so_list_head
; gdb
; gdb
= gdb
->next
)
673 if (! pattern
|| re_exec (gdb
->so_name
))
675 /* Normally, we would read the symbols from that library
676 only if READSYMS is set. However, we're making a small
677 exception for the pthread library, because we sometimes
678 need the library symbols to be loaded in order to provide
679 thread support (x86-linux for instance). */
680 const int add_this_solib
=
681 (readsyms
|| libpthread_solib_p (gdb
));
684 if (add_this_solib
&& solib_read_symbols (gdb
, from_tty
))
685 loaded_any_symbols
= 1;
688 if (from_tty
&& pattern
&& ! any_matches
)
690 ("No loaded shared libraries match the pattern `%s'.\n", pattern
);
692 if (loaded_any_symbols
)
694 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
696 /* Getting new symbols may change our opinion about what is
698 reinit_frame_cache ();
700 ops
->special_symbol_handling ();
710 info_sharedlibrary_command -- code for "info sharedlibrary"
714 static void info_sharedlibrary_command ()
718 Walk through the shared library list and print information
719 about each attached library.
723 info_sharedlibrary_command (char *ignore
, int from_tty
)
725 struct so_list
*so
= NULL
; /* link map state variable */
729 /* "0x", a little whitespace, and two hex digits per byte of pointers. */
730 addr_width
= 4 + (TARGET_PTR_BIT
/ 4);
732 update_solib_list (from_tty
, 0);
734 for (so
= so_list_head
; so
; so
= so
->next
)
740 printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width
, "From",
741 addr_width
, "To", "Syms Read",
742 "Shared Object Library");
746 printf_unfiltered ("%-*s", addr_width
,
747 so
->textsection
!= NULL
748 ? hex_string_custom (
749 (LONGEST
) so
->textsection
->addr
,
752 printf_unfiltered ("%-*s", addr_width
,
753 so
->textsection
!= NULL
754 ? hex_string_custom (
755 (LONGEST
) so
->textsection
->endaddr
,
758 printf_unfiltered ("%-12s", so
->symbols_loaded
? "Yes" : "No");
759 printf_unfiltered ("%s\n", so
->so_name
);
762 if (so_list_head
== NULL
)
764 printf_unfiltered (_("No shared libraries loaded at this time.\n"));
772 solib_address -- check to see if an address is in a shared lib
776 char * solib_address (CORE_ADDR address)
780 Provides a hook for other gdb routines to discover whether or
781 not a particular address is within the mapped address space of
784 For example, this routine is called at one point to disable
785 breakpoints which are in shared libraries that are not currently
790 solib_address (CORE_ADDR address
)
792 struct so_list
*so
= 0; /* link map state variable */
794 for (so
= so_list_head
; so
; so
= so
->next
)
796 struct section_table
*p
;
798 for (p
= so
->sections
; p
< so
->sections_end
; p
++)
800 if (p
->addr
<= address
&& address
< p
->endaddr
)
801 return (so
->so_name
);
808 /* Called by free_all_symtabs */
813 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
815 /* This function is expected to handle ELF shared libraries. It is
816 also used on Solaris, which can run either ELF or a.out binaries
817 (for compatibility with SunOS 4), both of which can use shared
818 libraries. So we don't know whether we have an ELF executable or
819 an a.out executable until the user chooses an executable file.
821 ELF shared libraries don't get mapped into the address space
822 until after the program starts, so we'd better not try to insert
823 breakpoints in them immediately. We have to wait until the
824 dynamic linker has loaded them; we'll hit a bp_shlib_event
825 breakpoint (look for calls to create_solib_event_breakpoint) when
828 SunOS shared libraries seem to be different --- they're present
829 as soon as the process begins execution, so there's no need to
830 put off inserting breakpoints. There's also nowhere to put a
831 bp_shlib_event breakpoint, so if we put it off, we'll never get
834 So: disable breakpoints only if we're using ELF shared libs. */
836 && bfd_get_flavour (exec_bfd
) != bfd_target_aout_flavour
)
837 disable_breakpoints_in_shlibs (1);
841 struct so_list
*so
= so_list_head
;
842 so_list_head
= so
->next
;
844 remove_target_sections (so
->abfd
);
852 do_clear_solib (void *dummy
)
854 solib_cleanup_queued
= 0;
860 solib_create_inferior_hook -- shared library startup support
864 void solib_create_inferior_hook ()
868 When gdb starts up the inferior, it nurses it along (through the
869 shell) until it is ready to execute it's first instruction. At this
870 point, this function gets called via expansion of the macro
871 SOLIB_CREATE_INFERIOR_HOOK. */
874 solib_create_inferior_hook (void)
876 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
877 ops
->solib_create_inferior_hook();
882 in_solib_dynsym_resolve_code -- check to see if an address is in
883 dynamic loader's dynamic symbol
888 int in_solib_dynsym_resolve_code (CORE_ADDR pc)
892 Determine if PC is in the dynamic linker's symbol resolution
893 code. Return 1 if so, 0 otherwise.
897 in_solib_dynsym_resolve_code (CORE_ADDR pc
)
899 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
900 return ops
->in_dynsym_resolve_code (pc
);
907 sharedlibrary_command -- handle command to explicitly add library
911 static void sharedlibrary_command (char *args, int from_tty)
918 sharedlibrary_command (char *args
, int from_tty
)
921 solib_add (args
, from_tty
, (struct target_ops
*) 0, 1);
926 no_shared_libraries -- handle command to explicitly discard symbols
927 from shared libraries.
931 Implements the command "nosharedlibrary", which discards symbols
932 that have been auto-loaded from shared libraries. Symbols from
933 shared libraries that were added by explicit request of the user
934 are not discarded. Also called from remote.c. */
937 no_shared_libraries (char *ignored
, int from_tty
)
939 objfile_purge_solibs ();
940 do_clear_solib (NULL
);
944 reload_shared_libraries (char *ignored
, int from_tty
,
945 struct cmd_list_element
*e
)
947 no_shared_libraries (NULL
, from_tty
);
948 solib_add (NULL
, from_tty
, NULL
, auto_solib_add
);
952 show_auto_solib_add (struct ui_file
*file
, int from_tty
,
953 struct cmd_list_element
*c
, const char *value
)
955 fprintf_filtered (file
, _("Autoloading of shared library symbols is %s.\n"),
960 extern initialize_file_ftype _initialize_solib
; /* -Wmissing-prototypes */
963 _initialize_solib (void)
965 struct cmd_list_element
*c
;
967 solib_data
= gdbarch_data_register_pre_init (solib_init
);
969 add_com ("sharedlibrary", class_files
, sharedlibrary_command
,
970 _("Load shared object library symbols for files matching REGEXP."));
971 add_info ("sharedlibrary", info_sharedlibrary_command
,
972 _("Status of loaded shared object libraries."));
973 add_com ("nosharedlibrary", class_files
, no_shared_libraries
,
974 _("Unload all shared object library symbols."));
976 add_setshow_boolean_cmd ("auto-solib-add", class_support
,
977 &auto_solib_add
, _("\
978 Set autoloading of shared library symbols."), _("\
979 Show autoloading of shared library symbols."), _("\
980 If \"on\", symbols from all shared object libraries will be loaded\n\
981 automatically when the inferior begins execution, when the dynamic linker\n\
982 informs gdb that a new library has been loaded, or when attaching to the\n\
983 inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'."),
986 &setlist
, &showlist
);
988 add_setshow_filename_cmd ("solib-absolute-prefix", class_support
,
989 &solib_absolute_prefix
, _("\
990 Set prefix for loading absolute shared library symbol files."), _("\
991 Show prefix for loading absolute shared library symbol files."), _("\
992 For other (relative) files, you can add values using `set solib-search-path'."),
993 reload_shared_libraries
,
995 &setlist
, &showlist
);
997 /* Set the default value of "solib-absolute-prefix" from the sysroot, if
999 solib_absolute_prefix
= xstrdup (gdb_sysroot
);
1001 add_setshow_optional_filename_cmd ("solib-search-path", class_support
,
1002 &solib_search_path
, _("\
1003 Set the search path for loading non-absolute shared library symbol files."), _("\
1004 Show the search path for loading non-absolute shared library symbol files."), _("\
1005 This takes precedence over the environment variables PATH and LD_LIBRARY_PATH."),
1006 reload_shared_libraries
,
1007 show_solib_search_path
,
1008 &setlist
, &showlist
);