1 /* Handle shared libraries for GDB, the GNU Debugger.
3 Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 2000, 2001, 2002, 2003, 2005, 2006, 2007 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
25 #include <sys/types.h>
27 #include "gdb_string.h"
32 #include "exceptions.h"
37 #include "gdb_regex.h"
42 #include "completer.h"
43 #include "filenames.h" /* for DOSish file names */
47 #include "readline/readline.h"
49 /* Architecture-specific operations. */
51 /* Per-architecture data key. */
52 static struct gdbarch_data
*solib_data
;
55 solib_init (struct obstack
*obstack
)
57 struct target_so_ops
**ops
;
59 ops
= OBSTACK_ZALLOC (obstack
, struct target_so_ops
*);
60 *ops
= current_target_so_ops
;
64 static struct target_so_ops
*
65 solib_ops (struct gdbarch
*gdbarch
)
67 struct target_so_ops
**ops
= gdbarch_data (gdbarch
, solib_data
);
72 /* external data declarations */
74 /* FIXME: gdbarch needs to control this variable */
75 struct target_so_ops
*current_target_so_ops
;
77 /* local data declarations */
79 static struct so_list
*so_list_head
; /* List of known shared objects */
81 static int solib_cleanup_queued
= 0; /* make_run_cleanup called */
83 /* Local function prototypes */
85 static void do_clear_solib (void *);
87 /* If non-empty, this is a search path for loading non-absolute shared library
88 symbol files. This takes precedence over the environment variables PATH
89 and LD_LIBRARY_PATH. */
90 static char *solib_search_path
= NULL
;
92 show_solib_search_path (struct ui_file
*file
, int from_tty
,
93 struct cmd_list_element
*c
, const char *value
)
95 fprintf_filtered (file
, _("\
96 The search path for loading non-absolute shared library symbol files is %s.\n"),
104 solib_open -- Find a shared library file and open it.
108 int solib_open (char *in_patname, char **found_pathname);
112 Global variable GDB_SYSROOT is used as a prefix directory
113 to search for shared libraries if they have an absolute path.
115 Global variable SOLIB_SEARCH_PATH is used as a prefix directory
116 (or set of directories, as in LD_LIBRARY_PATH) to search for all
117 shared libraries if not found in GDB_SYSROOT.
120 * If there is a gdb_sysroot and path is absolute:
121 * Search for gdb_sysroot/path.
123 * Look for it literally (unmodified).
124 * Look in SOLIB_SEARCH_PATH.
125 * If available, use target defined search function.
126 * If gdb_sysroot is NOT set, perform the following two searches:
127 * Look in inferior's $PATH.
128 * Look in inferior's $LD_LIBRARY_PATH.
130 * The last check avoids doing this search when targetting remote
131 * machines since gdb_sysroot will almost always be set.
135 file handle for opened solib, or -1 for failure. */
138 solib_open (char *in_pathname
, char **found_pathname
)
140 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
142 char *temp_pathname
= NULL
;
143 char *p
= in_pathname
;
144 int gdb_sysroot_is_empty
;
146 gdb_sysroot_is_empty
= (gdb_sysroot
== NULL
|| *gdb_sysroot
== 0);
148 if (! IS_ABSOLUTE_PATH (in_pathname
) || gdb_sysroot_is_empty
)
149 temp_pathname
= in_pathname
;
152 int prefix_len
= strlen (gdb_sysroot
);
154 /* Remove trailing slashes from absolute prefix. */
155 while (prefix_len
> 0
156 && IS_DIR_SEPARATOR (gdb_sysroot
[prefix_len
- 1]))
159 /* Cat the prefixed pathname together. */
160 temp_pathname
= alloca (prefix_len
+ strlen (in_pathname
) + 1);
161 strncpy (temp_pathname
, gdb_sysroot
, prefix_len
);
162 temp_pathname
[prefix_len
] = '\0';
163 strcat (temp_pathname
, in_pathname
);
166 /* Now see if we can open it. */
167 found_file
= open (temp_pathname
, O_RDONLY
| O_BINARY
, 0);
169 /* If the search in gdb_sysroot failed, and the path name is
170 absolute at this point, make it relative. (openp will try and open the
171 file according to its absolute path otherwise, which is not what we want.)
172 Affects subsequent searches for this solib. */
173 if (found_file
< 0 && IS_ABSOLUTE_PATH (in_pathname
))
175 /* First, get rid of any drive letters etc. */
176 while (!IS_DIR_SEPARATOR (*in_pathname
))
179 /* Next, get rid of all leading dir separators. */
180 while (IS_DIR_SEPARATOR (*in_pathname
))
184 /* If not found, search the solib_search_path (if any). */
185 if (found_file
< 0 && solib_search_path
!= NULL
)
186 found_file
= openp (solib_search_path
, OPF_TRY_CWD_FIRST
,
187 in_pathname
, O_RDONLY
| O_BINARY
, 0, &temp_pathname
);
189 /* If not found, next search the solib_search_path (if any) for the basename
190 only (ignoring the path). This is to allow reading solibs from a path
191 that differs from the opened path. */
192 if (found_file
< 0 && solib_search_path
!= NULL
)
193 found_file
= openp (solib_search_path
, OPF_TRY_CWD_FIRST
,
194 lbasename (in_pathname
), O_RDONLY
| O_BINARY
, 0,
197 /* If not found, try to use target supplied solib search method */
198 if (found_file
< 0 && ops
->find_and_open_solib
)
199 found_file
= ops
->find_and_open_solib (in_pathname
, O_RDONLY
| O_BINARY
,
202 /* If not found, next search the inferior's $PATH environment variable. */
203 if (found_file
< 0 && gdb_sysroot_is_empty
)
204 found_file
= openp (get_in_environ (inferior_environ
, "PATH"),
205 OPF_TRY_CWD_FIRST
, in_pathname
, O_RDONLY
| O_BINARY
, 0,
208 /* If not found, next search the inferior's $LD_LIBRARY_PATH
209 environment variable. */
210 if (found_file
< 0 && gdb_sysroot_is_empty
)
211 found_file
= openp (get_in_environ (inferior_environ
, "LD_LIBRARY_PATH"),
212 OPF_TRY_CWD_FIRST
, in_pathname
, O_RDONLY
| O_BINARY
, 0,
215 /* Done. If not found, tough luck. Return found_file and
216 (optionally) found_pathname. */
217 if (found_pathname
!= NULL
&& temp_pathname
!= NULL
)
218 *found_pathname
= xstrdup (temp_pathname
);
227 solib_map_sections -- open bfd and build sections for shared lib
231 static int solib_map_sections (struct so_list *so)
235 Given a pointer to one of the shared objects in our list
236 of mapped objects, use the recorded name to open a bfd
237 descriptor for the object, build a section table, and then
238 relocate all the section addresses by the base address at
239 which the shared object was mapped.
243 In most (all?) cases the shared object file name recorded in the
244 dynamic linkage tables will be a fully qualified pathname. For
245 cases where it isn't, do we really mimic the systems search
246 mechanism correctly in the below code (particularly the tilde
251 solib_map_sections (void *arg
)
253 struct so_list
*so
= (struct so_list
*) arg
; /* catch_errors bogon */
255 char *scratch_pathname
;
257 struct section_table
*p
;
258 struct cleanup
*old_chain
;
261 filename
= tilde_expand (so
->so_name
);
263 old_chain
= make_cleanup (xfree
, filename
);
264 scratch_chan
= solib_open (filename
, &scratch_pathname
);
266 if (scratch_chan
< 0)
268 perror_with_name (filename
);
271 /* Leave scratch_pathname allocated. abfd->name will point to it. */
272 abfd
= bfd_fopen (scratch_pathname
, gnutarget
, FOPEN_RB
, scratch_chan
);
275 close (scratch_chan
);
276 error (_("Could not open `%s' as an executable file: %s"),
277 scratch_pathname
, bfd_errmsg (bfd_get_error ()));
280 /* Leave bfd open, core_xfer_memory and "info files" need it. */
282 bfd_set_cacheable (abfd
, 1);
284 /* copy full path name into so_name, so that later symbol_file_add
286 if (strlen (scratch_pathname
) >= SO_NAME_MAX_PATH_SIZE
)
287 error (_("Full path name length of shared library exceeds SO_NAME_MAX_PATH_SIZE in so_list structure."));
288 strcpy (so
->so_name
, scratch_pathname
);
290 if (!bfd_check_format (abfd
, bfd_object
))
292 error (_("\"%s\": not in executable format: %s."),
293 scratch_pathname
, bfd_errmsg (bfd_get_error ()));
295 if (build_section_table (abfd
, &so
->sections
, &so
->sections_end
))
297 error (_("Can't find the file sections in `%s': %s"),
298 bfd_get_filename (abfd
), bfd_errmsg (bfd_get_error ()));
301 for (p
= so
->sections
; p
< so
->sections_end
; p
++)
303 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
305 /* Relocate the section binding addresses as recorded in the shared
306 object's file by the base address to which the object was actually
308 ops
->relocate_section_addresses (so
, p
);
309 if (strcmp (p
->the_bfd_section
->name
, ".text") == 0)
315 /* Free the file names, close the file now. */
316 do_cleanups (old_chain
);
323 free_so --- free a `struct so_list' object
327 void free_so (struct so_list *so)
331 Free the storage associated with the `struct so_list' object SO.
332 If we have opened a BFD for SO, close it.
334 The caller is responsible for removing SO from whatever list it is
335 a member of. If we have placed SO's sections in some target's
336 section table, the caller is responsible for removing them.
338 This function doesn't mess with objfiles at all. If there is an
339 objfile associated with SO that needs to be removed, the caller is
340 responsible for taking care of that. */
343 free_so (struct so_list
*so
)
345 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
346 char *bfd_filename
= 0;
349 xfree (so
->sections
);
353 bfd_filename
= bfd_get_filename (so
->abfd
);
354 if (! bfd_close (so
->abfd
))
355 warning (_("cannot close \"%s\": %s"),
356 bfd_filename
, bfd_errmsg (bfd_get_error ()));
360 xfree (bfd_filename
);
368 /* Return address of first so_list entry in master shared object list. */
370 master_so_list (void)
376 /* A small stub to get us past the arg-passing pinhole of catch_errors. */
379 symbol_add_stub (void *arg
)
381 struct so_list
*so
= (struct so_list
*) arg
; /* catch_errs bogon */
382 struct section_addr_info
*sap
;
384 /* Have we already loaded this shared object? */
385 ALL_OBJFILES (so
->objfile
)
387 if (strcmp (so
->objfile
->name
, so
->so_name
) == 0)
391 sap
= build_section_addr_info_from_section_table (so
->sections
,
394 so
->objfile
= symbol_file_add (so
->so_name
, so
->from_tty
,
395 sap
, 0, OBJF_SHARED
);
396 free_section_addr_info (sap
);
401 /* Read in symbols for shared object SO. If FROM_TTY is non-zero, be
402 chatty about it. Return non-zero if any symbols were actually
406 solib_read_symbols (struct so_list
*so
, int from_tty
)
408 if (so
->symbols_loaded
)
411 printf_unfiltered (_("Symbols already loaded for %s\n"), so
->so_name
);
413 else if (so
->abfd
== NULL
)
416 printf_unfiltered (_("Symbol file not found for %s\n"), so
->so_name
);
420 if (catch_errors (symbol_add_stub
, so
,
421 "Error while reading shared library symbols:\n",
425 printf_unfiltered (_("Loaded symbols for %s\n"), so
->so_name
);
426 so
->symbols_loaded
= 1;
436 update_solib_list --- synchronize GDB's shared object list with inferior's
440 void update_solib_list (int from_tty, struct target_ops *TARGET)
442 Extract the list of currently loaded shared objects from the
443 inferior, and compare it with the list of shared objects currently
444 in GDB's so_list_head list. Edit so_list_head to bring it in sync
445 with the inferior's new list.
447 If we notice that the inferior has unloaded some shared objects,
448 free any symbolic info GDB had read about those shared objects.
450 Don't load symbolic info for any new shared objects; just add them
451 to the list, and leave their symbols_loaded flag clear.
453 If FROM_TTY is non-null, feel free to print messages about what
456 If TARGET is non-null, add the sections of all new shared objects
457 to TARGET's section table. Note that this doesn't remove any
458 sections for shared objects that have been unloaded, and it
459 doesn't check to see if the new shared objects are already present in
460 the section table. But we only use this for core files and
461 processes we've just attached to, so that's okay. */
464 update_solib_list (int from_tty
, struct target_ops
*target
)
466 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
467 struct so_list
*inferior
= ops
->current_sos();
468 struct so_list
*gdb
, **gdb_link
;
470 /* If we are attaching to a running process for which we
471 have not opened a symbol file, we may be able to get its
474 symfile_objfile
== NULL
)
475 catch_errors (ops
->open_symbol_file_object
, &from_tty
,
476 "Error reading attached process's symbol file.\n",
479 /* Since this function might actually add some elements to the
480 so_list_head list, arrange for it to be cleaned up when
482 if (!solib_cleanup_queued
)
484 make_run_cleanup (do_clear_solib
, NULL
);
485 solib_cleanup_queued
= 1;
488 /* GDB and the inferior's dynamic linker each maintain their own
489 list of currently loaded shared objects; we want to bring the
490 former in sync with the latter. Scan both lists, seeing which
491 shared objects appear where. There are three cases:
493 - A shared object appears on both lists. This means that GDB
494 knows about it already, and it's still loaded in the inferior.
495 Nothing needs to happen.
497 - A shared object appears only on GDB's list. This means that
498 the inferior has unloaded it. We should remove the shared
499 object from GDB's tables.
501 - A shared object appears only on the inferior's list. This
502 means that it's just been loaded. We should add it to GDB's
505 So we walk GDB's list, checking each entry to see if it appears
506 in the inferior's list too. If it does, no action is needed, and
507 we remove it from the inferior's list. If it doesn't, the
508 inferior has unloaded it, and we remove it from GDB's list. By
509 the time we're done walking GDB's list, the inferior's list
510 contains only the new shared objects, which we then add. */
513 gdb_link
= &so_list_head
;
516 struct so_list
*i
= inferior
;
517 struct so_list
**i_link
= &inferior
;
519 /* Check to see whether the shared object *gdb also appears in
520 the inferior's current list. */
523 if (! strcmp (gdb
->so_original_name
, i
->so_original_name
))
530 /* If the shared object appears on the inferior's list too, then
531 it's still loaded, so we don't need to do anything. Delete
532 it from the inferior's list, and leave it on GDB's list. */
537 gdb_link
= &gdb
->next
;
541 /* If it's not on the inferior's list, remove it from GDB's tables. */
544 /* Notify any observer that the shared object has been
545 unloaded before we remove it from GDB's tables. */
546 observer_notify_solib_unloaded (gdb
);
548 *gdb_link
= gdb
->next
;
550 /* Unless the user loaded it explicitly, free SO's objfile. */
551 if (gdb
->objfile
&& ! (gdb
->objfile
->flags
& OBJF_USERLOADED
))
552 free_objfile (gdb
->objfile
);
554 /* Some targets' section tables might be referring to
555 sections from so->abfd; remove them. */
556 remove_target_sections (gdb
->abfd
);
563 /* Now the inferior's list contains only shared objects that don't
564 appear in GDB's list --- those that are newly loaded. Add them
565 to GDB's shared object list. */
570 /* Add the new shared objects to GDB's list. */
571 *gdb_link
= inferior
;
573 /* Fill in the rest of each of the `struct so_list' nodes. */
574 for (i
= inferior
; i
; i
= i
->next
)
576 i
->from_tty
= from_tty
;
578 /* Fill in the rest of the `struct so_list' node. */
579 catch_errors (solib_map_sections
, i
,
580 "Error while mapping shared library sections:\n",
583 /* If requested, add the shared object's sections to the TARGET's
584 section table. Do this immediately after mapping the object so
585 that later nodes in the list can query this object, as is needed
589 int count
= (i
->sections_end
- i
->sections
);
592 int space
= target_resize_to_sections (target
, count
);
593 memcpy (target
->to_sections
+ space
,
595 count
* sizeof (i
->sections
[0]));
599 /* Notify any observer that the shared object has been
600 loaded now that we've added it to GDB's tables. */
601 observer_notify_solib_loaded (i
);
606 /* Return non-zero if SO is the libpthread shared library.
608 Uses a fairly simplistic heuristic approach where we check
609 the file name against "/libpthread". This can lead to false
610 positives, but this should be good enough in practice. */
613 libpthread_solib_p (struct so_list
*so
)
615 return (strstr (so
->so_name
, "/libpthread") != NULL
);
620 solib_add -- read in symbol info for newly added shared libraries
624 void solib_add (char *pattern, int from_tty, struct target_ops
625 *TARGET, int readsyms)
629 Read in symbolic information for any shared objects whose names
630 match PATTERN. (If we've already read a shared object's symbol
631 info, leave it alone.) If PATTERN is zero, read them all.
633 If READSYMS is 0, defer reading symbolic information until later
634 but still do any needed low level processing.
636 FROM_TTY and TARGET are as described for update_solib_list, above. */
639 solib_add (char *pattern
, int from_tty
, struct target_ops
*target
, int readsyms
)
645 char *re_err
= re_comp (pattern
);
648 error (_("Invalid regexp: %s"), re_err
);
651 update_solib_list (from_tty
, target
);
653 /* Walk the list of currently loaded shared libraries, and read
654 symbols for any that match the pattern --- or any whose symbols
655 aren't already loaded, if no pattern was given. */
658 int loaded_any_symbols
= 0;
660 for (gdb
= so_list_head
; gdb
; gdb
= gdb
->next
)
661 if (! pattern
|| re_exec (gdb
->so_name
))
663 /* Normally, we would read the symbols from that library
664 only if READSYMS is set. However, we're making a small
665 exception for the pthread library, because we sometimes
666 need the library symbols to be loaded in order to provide
667 thread support (x86-linux for instance). */
668 const int add_this_solib
=
669 (readsyms
|| libpthread_solib_p (gdb
));
672 if (add_this_solib
&& solib_read_symbols (gdb
, from_tty
))
673 loaded_any_symbols
= 1;
676 if (from_tty
&& pattern
&& ! any_matches
)
678 ("No loaded shared libraries match the pattern `%s'.\n", pattern
);
680 if (loaded_any_symbols
)
682 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
684 /* Getting new symbols may change our opinion about what is
686 reinit_frame_cache ();
688 ops
->special_symbol_handling ();
698 info_sharedlibrary_command -- code for "info sharedlibrary"
702 static void info_sharedlibrary_command ()
706 Walk through the shared library list and print information
707 about each attached library.
711 info_sharedlibrary_command (char *ignore
, int from_tty
)
713 struct so_list
*so
= NULL
; /* link map state variable */
717 /* "0x", a little whitespace, and two hex digits per byte of pointers. */
718 addr_width
= 4 + (TARGET_PTR_BIT
/ 4);
720 update_solib_list (from_tty
, 0);
722 for (so
= so_list_head
; so
; so
= so
->next
)
728 printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width
, "From",
729 addr_width
, "To", "Syms Read",
730 "Shared Object Library");
734 printf_unfiltered ("%-*s", addr_width
,
735 so
->textsection
!= NULL
736 ? hex_string_custom (
737 (LONGEST
) so
->textsection
->addr
,
740 printf_unfiltered ("%-*s", addr_width
,
741 so
->textsection
!= NULL
742 ? hex_string_custom (
743 (LONGEST
) so
->textsection
->endaddr
,
746 printf_unfiltered ("%-12s", so
->symbols_loaded
? "Yes" : "No");
747 printf_unfiltered ("%s\n", so
->so_name
);
750 if (so_list_head
== NULL
)
752 printf_unfiltered (_("No shared libraries loaded at this time.\n"));
760 solib_address -- check to see if an address is in a shared lib
764 char * solib_address (CORE_ADDR address)
768 Provides a hook for other gdb routines to discover whether or
769 not a particular address is within the mapped address space of
772 For example, this routine is called at one point to disable
773 breakpoints which are in shared libraries that are not currently
778 solib_address (CORE_ADDR address
)
780 struct so_list
*so
= 0; /* link map state variable */
782 for (so
= so_list_head
; so
; so
= so
->next
)
784 struct section_table
*p
;
786 for (p
= so
->sections
; p
< so
->sections_end
; p
++)
788 if (p
->addr
<= address
&& address
< p
->endaddr
)
789 return (so
->so_name
);
796 /* Called by free_all_symtabs */
801 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
803 /* This function is expected to handle ELF shared libraries. It is
804 also used on Solaris, which can run either ELF or a.out binaries
805 (for compatibility with SunOS 4), both of which can use shared
806 libraries. So we don't know whether we have an ELF executable or
807 an a.out executable until the user chooses an executable file.
809 ELF shared libraries don't get mapped into the address space
810 until after the program starts, so we'd better not try to insert
811 breakpoints in them immediately. We have to wait until the
812 dynamic linker has loaded them; we'll hit a bp_shlib_event
813 breakpoint (look for calls to create_solib_event_breakpoint) when
816 SunOS shared libraries seem to be different --- they're present
817 as soon as the process begins execution, so there's no need to
818 put off inserting breakpoints. There's also nowhere to put a
819 bp_shlib_event breakpoint, so if we put it off, we'll never get
822 So: disable breakpoints only if we're using ELF shared libs. */
824 && bfd_get_flavour (exec_bfd
) != bfd_target_aout_flavour
)
825 disable_breakpoints_in_shlibs (1);
829 struct so_list
*so
= so_list_head
;
830 so_list_head
= so
->next
;
832 remove_target_sections (so
->abfd
);
840 do_clear_solib (void *dummy
)
842 solib_cleanup_queued
= 0;
848 solib_create_inferior_hook -- shared library startup support
852 void solib_create_inferior_hook ()
856 When gdb starts up the inferior, it nurses it along (through the
857 shell) until it is ready to execute it's first instruction. At this
858 point, this function gets called via expansion of the macro
859 SOLIB_CREATE_INFERIOR_HOOK. */
862 solib_create_inferior_hook (void)
864 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
865 ops
->solib_create_inferior_hook();
870 in_solib_dynsym_resolve_code -- check to see if an address is in
871 dynamic loader's dynamic symbol
876 int in_solib_dynsym_resolve_code (CORE_ADDR pc)
880 Determine if PC is in the dynamic linker's symbol resolution
881 code. Return 1 if so, 0 otherwise.
885 in_solib_dynsym_resolve_code (CORE_ADDR pc
)
887 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
888 return ops
->in_dynsym_resolve_code (pc
);
895 sharedlibrary_command -- handle command to explicitly add library
899 static void sharedlibrary_command (char *args, int from_tty)
906 sharedlibrary_command (char *args
, int from_tty
)
909 solib_add (args
, from_tty
, (struct target_ops
*) 0, 1);
914 no_shared_libraries -- handle command to explicitly discard symbols
915 from shared libraries.
919 Implements the command "nosharedlibrary", which discards symbols
920 that have been auto-loaded from shared libraries. Symbols from
921 shared libraries that were added by explicit request of the user
922 are not discarded. Also called from remote.c. */
925 no_shared_libraries (char *ignored
, int from_tty
)
927 objfile_purge_solibs ();
928 do_clear_solib (NULL
);
932 reload_shared_libraries (char *ignored
, int from_tty
,
933 struct cmd_list_element
*e
)
935 no_shared_libraries (NULL
, from_tty
);
936 solib_add (NULL
, from_tty
, NULL
, auto_solib_add
);
940 show_auto_solib_add (struct ui_file
*file
, int from_tty
,
941 struct cmd_list_element
*c
, const char *value
)
943 fprintf_filtered (file
, _("Autoloading of shared library symbols is %s.\n"),
948 extern initialize_file_ftype _initialize_solib
; /* -Wmissing-prototypes */
951 _initialize_solib (void)
953 struct cmd_list_element
*c
;
955 solib_data
= gdbarch_data_register_pre_init (solib_init
);
957 add_com ("sharedlibrary", class_files
, sharedlibrary_command
,
958 _("Load shared object library symbols for files matching REGEXP."));
959 add_info ("sharedlibrary", info_sharedlibrary_command
,
960 _("Status of loaded shared object libraries."));
961 add_com ("nosharedlibrary", class_files
, no_shared_libraries
,
962 _("Unload all shared object library symbols."));
964 add_setshow_boolean_cmd ("auto-solib-add", class_support
,
965 &auto_solib_add
, _("\
966 Set autoloading of shared library symbols."), _("\
967 Show autoloading of shared library symbols."), _("\
968 If \"on\", symbols from all shared object libraries will be loaded\n\
969 automatically when the inferior begins execution, when the dynamic linker\n\
970 informs gdb that a new library has been loaded, or when attaching to the\n\
971 inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'."),
974 &setlist
, &showlist
);
976 add_setshow_filename_cmd ("sysroot", class_support
,
978 Set an alternate system root."), _("\
979 Show the current system root."), _("\
980 The system root is used to load absolute shared library symbol files.\n\
981 For other (relative) files, you can add directories using\n\
982 `set solib-search-path'."),
983 reload_shared_libraries
,
985 &setlist
, &showlist
);
987 add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support
, 0,
989 add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support
, 0,
992 add_setshow_optional_filename_cmd ("solib-search-path", class_support
,
993 &solib_search_path
, _("\
994 Set the search path for loading non-absolute shared library symbol files."), _("\
995 Show the search path for loading non-absolute shared library symbol files."), _("\
996 This takes precedence over the environment variables PATH and LD_LIBRARY_PATH."),
997 reload_shared_libraries
,
998 show_solib_search_path
,
999 &setlist
, &showlist
);