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
);
71 /* Set the solib operations for GDBARCH to NEW_OPS. */
74 set_solib_ops (struct gdbarch
*gdbarch
, struct target_so_ops
*new_ops
)
76 struct target_so_ops
**ops
= gdbarch_data (gdbarch
, solib_data
);
81 /* external data declarations */
83 /* FIXME: gdbarch needs to control this variable, or else every
84 configuration needs to call set_solib_ops. */
85 struct target_so_ops
*current_target_so_ops
;
87 /* local data declarations */
89 static struct so_list
*so_list_head
; /* List of known shared objects */
91 static int solib_cleanup_queued
= 0; /* make_run_cleanup called */
93 /* Local function prototypes */
95 static void do_clear_solib (void *);
97 /* If non-empty, this is a search path for loading non-absolute shared library
98 symbol files. This takes precedence over the environment variables PATH
99 and LD_LIBRARY_PATH. */
100 static char *solib_search_path
= NULL
;
102 show_solib_search_path (struct ui_file
*file
, int from_tty
,
103 struct cmd_list_element
*c
, const char *value
)
105 fprintf_filtered (file
, _("\
106 The search path for loading non-absolute shared library symbol files is %s.\n"),
114 solib_open -- Find a shared library file and open it.
118 int solib_open (char *in_patname, char **found_pathname);
122 Global variable GDB_SYSROOT is used as a prefix directory
123 to search for shared libraries if they have an absolute path.
125 Global variable SOLIB_SEARCH_PATH is used as a prefix directory
126 (or set of directories, as in LD_LIBRARY_PATH) to search for all
127 shared libraries if not found in GDB_SYSROOT.
130 * If there is a gdb_sysroot and path is absolute:
131 * Search for gdb_sysroot/path.
133 * Look for it literally (unmodified).
134 * Look in SOLIB_SEARCH_PATH.
135 * If available, use target defined search function.
136 * If gdb_sysroot is NOT set, perform the following two searches:
137 * Look in inferior's $PATH.
138 * Look in inferior's $LD_LIBRARY_PATH.
140 * The last check avoids doing this search when targetting remote
141 * machines since gdb_sysroot will almost always be set.
145 file handle for opened solib, or -1 for failure. */
148 solib_open (char *in_pathname
, char **found_pathname
)
150 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
152 char *temp_pathname
= NULL
;
153 char *p
= in_pathname
;
154 int gdb_sysroot_is_empty
;
156 gdb_sysroot_is_empty
= (gdb_sysroot
== NULL
|| *gdb_sysroot
== 0);
158 if (! IS_ABSOLUTE_PATH (in_pathname
) || gdb_sysroot_is_empty
)
159 temp_pathname
= in_pathname
;
162 int prefix_len
= strlen (gdb_sysroot
);
164 /* Remove trailing slashes from absolute prefix. */
165 while (prefix_len
> 0
166 && IS_DIR_SEPARATOR (gdb_sysroot
[prefix_len
- 1]))
169 /* Cat the prefixed pathname together. */
170 temp_pathname
= alloca (prefix_len
+ strlen (in_pathname
) + 1);
171 strncpy (temp_pathname
, gdb_sysroot
, prefix_len
);
172 temp_pathname
[prefix_len
] = '\0';
173 strcat (temp_pathname
, in_pathname
);
176 /* Now see if we can open it. */
177 found_file
= open (temp_pathname
, O_RDONLY
| O_BINARY
, 0);
179 /* If the search in gdb_sysroot failed, and the path name is
180 absolute at this point, make it relative. (openp will try and open the
181 file according to its absolute path otherwise, which is not what we want.)
182 Affects subsequent searches for this solib. */
183 if (found_file
< 0 && IS_ABSOLUTE_PATH (in_pathname
))
185 /* First, get rid of any drive letters etc. */
186 while (!IS_DIR_SEPARATOR (*in_pathname
))
189 /* Next, get rid of all leading dir separators. */
190 while (IS_DIR_SEPARATOR (*in_pathname
))
194 /* If not found, search the solib_search_path (if any). */
195 if (found_file
< 0 && solib_search_path
!= NULL
)
196 found_file
= openp (solib_search_path
, OPF_TRY_CWD_FIRST
,
197 in_pathname
, O_RDONLY
| O_BINARY
, 0, &temp_pathname
);
199 /* If not found, next search the solib_search_path (if any) for the basename
200 only (ignoring the path). This is to allow reading solibs from a path
201 that differs from the opened path. */
202 if (found_file
< 0 && solib_search_path
!= NULL
)
203 found_file
= openp (solib_search_path
, OPF_TRY_CWD_FIRST
,
204 lbasename (in_pathname
), O_RDONLY
| O_BINARY
, 0,
207 /* If not found, try to use target supplied solib search method */
208 if (found_file
< 0 && ops
->find_and_open_solib
)
209 found_file
= ops
->find_and_open_solib (in_pathname
, O_RDONLY
| O_BINARY
,
212 /* If not found, next search the inferior's $PATH environment variable. */
213 if (found_file
< 0 && gdb_sysroot_is_empty
)
214 found_file
= openp (get_in_environ (inferior_environ
, "PATH"),
215 OPF_TRY_CWD_FIRST
, in_pathname
, O_RDONLY
| O_BINARY
, 0,
218 /* If not found, next search the inferior's $LD_LIBRARY_PATH
219 environment variable. */
220 if (found_file
< 0 && gdb_sysroot_is_empty
)
221 found_file
= openp (get_in_environ (inferior_environ
, "LD_LIBRARY_PATH"),
222 OPF_TRY_CWD_FIRST
, in_pathname
, O_RDONLY
| O_BINARY
, 0,
225 /* Done. If not found, tough luck. Return found_file and
226 (optionally) found_pathname. */
227 if (found_pathname
!= NULL
&& temp_pathname
!= NULL
)
228 *found_pathname
= xstrdup (temp_pathname
);
237 solib_map_sections -- open bfd and build sections for shared lib
241 static int solib_map_sections (struct so_list *so)
245 Given a pointer to one of the shared objects in our list
246 of mapped objects, use the recorded name to open a bfd
247 descriptor for the object, build a section table, and then
248 relocate all the section addresses by the base address at
249 which the shared object was mapped.
253 In most (all?) cases the shared object file name recorded in the
254 dynamic linkage tables will be a fully qualified pathname. For
255 cases where it isn't, do we really mimic the systems search
256 mechanism correctly in the below code (particularly the tilde
261 solib_map_sections (void *arg
)
263 struct so_list
*so
= (struct so_list
*) arg
; /* catch_errors bogon */
265 char *scratch_pathname
;
267 struct section_table
*p
;
268 struct cleanup
*old_chain
;
271 filename
= tilde_expand (so
->so_name
);
273 old_chain
= make_cleanup (xfree
, filename
);
274 scratch_chan
= solib_open (filename
, &scratch_pathname
);
276 if (scratch_chan
< 0)
278 perror_with_name (filename
);
281 /* Leave scratch_pathname allocated. abfd->name will point to it. */
282 abfd
= bfd_fopen (scratch_pathname
, gnutarget
, FOPEN_RB
, scratch_chan
);
285 close (scratch_chan
);
286 error (_("Could not open `%s' as an executable file: %s"),
287 scratch_pathname
, bfd_errmsg (bfd_get_error ()));
290 /* Leave bfd open, core_xfer_memory and "info files" need it. */
292 bfd_set_cacheable (abfd
, 1);
294 /* copy full path name into so_name, so that later symbol_file_add
296 if (strlen (scratch_pathname
) >= SO_NAME_MAX_PATH_SIZE
)
297 error (_("Full path name length of shared library exceeds SO_NAME_MAX_PATH_SIZE in so_list structure."));
298 strcpy (so
->so_name
, scratch_pathname
);
300 if (!bfd_check_format (abfd
, bfd_object
))
302 error (_("\"%s\": not in executable format: %s."),
303 scratch_pathname
, bfd_errmsg (bfd_get_error ()));
305 if (build_section_table (abfd
, &so
->sections
, &so
->sections_end
))
307 error (_("Can't find the file sections in `%s': %s"),
308 bfd_get_filename (abfd
), bfd_errmsg (bfd_get_error ()));
311 for (p
= so
->sections
; p
< so
->sections_end
; p
++)
313 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
315 /* Relocate the section binding addresses as recorded in the shared
316 object's file by the base address to which the object was actually
318 ops
->relocate_section_addresses (so
, p
);
319 if (strcmp (p
->the_bfd_section
->name
, ".text") == 0)
325 /* Free the file names, close the file now. */
326 do_cleanups (old_chain
);
333 free_so --- free a `struct so_list' object
337 void free_so (struct so_list *so)
341 Free the storage associated with the `struct so_list' object SO.
342 If we have opened a BFD for SO, close it.
344 The caller is responsible for removing SO from whatever list it is
345 a member of. If we have placed SO's sections in some target's
346 section table, the caller is responsible for removing them.
348 This function doesn't mess with objfiles at all. If there is an
349 objfile associated with SO that needs to be removed, the caller is
350 responsible for taking care of that. */
353 free_so (struct so_list
*so
)
355 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
356 char *bfd_filename
= 0;
359 xfree (so
->sections
);
363 bfd_filename
= bfd_get_filename (so
->abfd
);
364 if (! bfd_close (so
->abfd
))
365 warning (_("cannot close \"%s\": %s"),
366 bfd_filename
, bfd_errmsg (bfd_get_error ()));
370 xfree (bfd_filename
);
378 /* Return address of first so_list entry in master shared object list. */
380 master_so_list (void)
386 /* A small stub to get us past the arg-passing pinhole of catch_errors. */
389 symbol_add_stub (void *arg
)
391 struct so_list
*so
= (struct so_list
*) arg
; /* catch_errs bogon */
392 struct section_addr_info
*sap
;
394 /* Have we already loaded this shared object? */
395 ALL_OBJFILES (so
->objfile
)
397 if (strcmp (so
->objfile
->name
, so
->so_name
) == 0)
401 sap
= build_section_addr_info_from_section_table (so
->sections
,
404 so
->objfile
= symbol_file_add (so
->so_name
, so
->from_tty
,
405 sap
, 0, OBJF_SHARED
);
406 free_section_addr_info (sap
);
411 /* Read in symbols for shared object SO. If FROM_TTY is non-zero, be
412 chatty about it. Return non-zero if any symbols were actually
416 solib_read_symbols (struct so_list
*so
, int from_tty
)
418 if (so
->symbols_loaded
)
421 printf_unfiltered (_("Symbols already loaded for %s\n"), so
->so_name
);
423 else if (so
->abfd
== NULL
)
426 printf_unfiltered (_("Symbol file not found for %s\n"), so
->so_name
);
430 if (catch_errors (symbol_add_stub
, so
,
431 "Error while reading shared library symbols:\n",
435 printf_unfiltered (_("Loaded symbols for %s\n"), so
->so_name
);
436 so
->symbols_loaded
= 1;
446 update_solib_list --- synchronize GDB's shared object list with inferior's
450 void update_solib_list (int from_tty, struct target_ops *TARGET)
452 Extract the list of currently loaded shared objects from the
453 inferior, and compare it with the list of shared objects currently
454 in GDB's so_list_head list. Edit so_list_head to bring it in sync
455 with the inferior's new list.
457 If we notice that the inferior has unloaded some shared objects,
458 free any symbolic info GDB had read about those shared objects.
460 Don't load symbolic info for any new shared objects; just add them
461 to the list, and leave their symbols_loaded flag clear.
463 If FROM_TTY is non-null, feel free to print messages about what
466 If TARGET is non-null, add the sections of all new shared objects
467 to TARGET's section table. Note that this doesn't remove any
468 sections for shared objects that have been unloaded, and it
469 doesn't check to see if the new shared objects are already present in
470 the section table. But we only use this for core files and
471 processes we've just attached to, so that's okay. */
474 update_solib_list (int from_tty
, struct target_ops
*target
)
476 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
477 struct so_list
*inferior
= ops
->current_sos();
478 struct so_list
*gdb
, **gdb_link
;
480 /* If we are attaching to a running process for which we
481 have not opened a symbol file, we may be able to get its
484 symfile_objfile
== NULL
)
485 catch_errors (ops
->open_symbol_file_object
, &from_tty
,
486 "Error reading attached process's symbol file.\n",
489 /* Since this function might actually add some elements to the
490 so_list_head list, arrange for it to be cleaned up when
492 if (!solib_cleanup_queued
)
494 make_run_cleanup (do_clear_solib
, NULL
);
495 solib_cleanup_queued
= 1;
498 /* GDB and the inferior's dynamic linker each maintain their own
499 list of currently loaded shared objects; we want to bring the
500 former in sync with the latter. Scan both lists, seeing which
501 shared objects appear where. There are three cases:
503 - A shared object appears on both lists. This means that GDB
504 knows about it already, and it's still loaded in the inferior.
505 Nothing needs to happen.
507 - A shared object appears only on GDB's list. This means that
508 the inferior has unloaded it. We should remove the shared
509 object from GDB's tables.
511 - A shared object appears only on the inferior's list. This
512 means that it's just been loaded. We should add it to GDB's
515 So we walk GDB's list, checking each entry to see if it appears
516 in the inferior's list too. If it does, no action is needed, and
517 we remove it from the inferior's list. If it doesn't, the
518 inferior has unloaded it, and we remove it from GDB's list. By
519 the time we're done walking GDB's list, the inferior's list
520 contains only the new shared objects, which we then add. */
523 gdb_link
= &so_list_head
;
526 struct so_list
*i
= inferior
;
527 struct so_list
**i_link
= &inferior
;
529 /* Check to see whether the shared object *gdb also appears in
530 the inferior's current list. */
533 if (! strcmp (gdb
->so_original_name
, i
->so_original_name
))
540 /* If the shared object appears on the inferior's list too, then
541 it's still loaded, so we don't need to do anything. Delete
542 it from the inferior's list, and leave it on GDB's list. */
547 gdb_link
= &gdb
->next
;
551 /* If it's not on the inferior's list, remove it from GDB's tables. */
554 /* Notify any observer that the shared object has been
555 unloaded before we remove it from GDB's tables. */
556 observer_notify_solib_unloaded (gdb
);
558 *gdb_link
= gdb
->next
;
560 /* Unless the user loaded it explicitly, free SO's objfile. */
561 if (gdb
->objfile
&& ! (gdb
->objfile
->flags
& OBJF_USERLOADED
))
562 free_objfile (gdb
->objfile
);
564 /* Some targets' section tables might be referring to
565 sections from so->abfd; remove them. */
566 remove_target_sections (gdb
->abfd
);
573 /* Now the inferior's list contains only shared objects that don't
574 appear in GDB's list --- those that are newly loaded. Add them
575 to GDB's shared object list. */
580 /* Add the new shared objects to GDB's list. */
581 *gdb_link
= inferior
;
583 /* Fill in the rest of each of the `struct so_list' nodes. */
584 for (i
= inferior
; i
; i
= i
->next
)
586 i
->from_tty
= from_tty
;
588 /* Fill in the rest of the `struct so_list' node. */
589 catch_errors (solib_map_sections
, i
,
590 "Error while mapping shared library sections:\n",
593 /* If requested, add the shared object's sections to the TARGET's
594 section table. Do this immediately after mapping the object so
595 that later nodes in the list can query this object, as is needed
599 int count
= (i
->sections_end
- i
->sections
);
602 int space
= target_resize_to_sections (target
, count
);
603 memcpy (target
->to_sections
+ space
,
605 count
* sizeof (i
->sections
[0]));
609 /* Notify any observer that the shared object has been
610 loaded now that we've added it to GDB's tables. */
611 observer_notify_solib_loaded (i
);
616 /* Return non-zero if SO is the libpthread shared library.
618 Uses a fairly simplistic heuristic approach where we check
619 the file name against "/libpthread". This can lead to false
620 positives, but this should be good enough in practice. */
623 libpthread_solib_p (struct so_list
*so
)
625 return (strstr (so
->so_name
, "/libpthread") != NULL
);
630 solib_add -- read in symbol info for newly added shared libraries
634 void solib_add (char *pattern, int from_tty, struct target_ops
635 *TARGET, int readsyms)
639 Read in symbolic information for any shared objects whose names
640 match PATTERN. (If we've already read a shared object's symbol
641 info, leave it alone.) If PATTERN is zero, read them all.
643 If READSYMS is 0, defer reading symbolic information until later
644 but still do any needed low level processing.
646 FROM_TTY and TARGET are as described for update_solib_list, above. */
649 solib_add (char *pattern
, int from_tty
, struct target_ops
*target
, int readsyms
)
655 char *re_err
= re_comp (pattern
);
658 error (_("Invalid regexp: %s"), re_err
);
661 update_solib_list (from_tty
, target
);
663 /* Walk the list of currently loaded shared libraries, and read
664 symbols for any that match the pattern --- or any whose symbols
665 aren't already loaded, if no pattern was given. */
668 int loaded_any_symbols
= 0;
670 for (gdb
= so_list_head
; gdb
; gdb
= gdb
->next
)
671 if (! pattern
|| re_exec (gdb
->so_name
))
673 /* Normally, we would read the symbols from that library
674 only if READSYMS is set. However, we're making a small
675 exception for the pthread library, because we sometimes
676 need the library symbols to be loaded in order to provide
677 thread support (x86-linux for instance). */
678 const int add_this_solib
=
679 (readsyms
|| libpthread_solib_p (gdb
));
682 if (add_this_solib
&& solib_read_symbols (gdb
, from_tty
))
683 loaded_any_symbols
= 1;
686 if (from_tty
&& pattern
&& ! any_matches
)
688 ("No loaded shared libraries match the pattern `%s'.\n", pattern
);
690 if (loaded_any_symbols
)
692 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
694 /* Getting new symbols may change our opinion about what is
696 reinit_frame_cache ();
698 ops
->special_symbol_handling ();
708 info_sharedlibrary_command -- code for "info sharedlibrary"
712 static void info_sharedlibrary_command ()
716 Walk through the shared library list and print information
717 about each attached library.
721 info_sharedlibrary_command (char *ignore
, int from_tty
)
723 struct so_list
*so
= NULL
; /* link map state variable */
727 /* "0x", a little whitespace, and two hex digits per byte of pointers. */
728 addr_width
= 4 + (TARGET_PTR_BIT
/ 4);
730 update_solib_list (from_tty
, 0);
732 for (so
= so_list_head
; so
; so
= so
->next
)
738 printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width
, "From",
739 addr_width
, "To", "Syms Read",
740 "Shared Object Library");
744 printf_unfiltered ("%-*s", addr_width
,
745 so
->textsection
!= NULL
746 ? hex_string_custom (
747 (LONGEST
) so
->textsection
->addr
,
750 printf_unfiltered ("%-*s", addr_width
,
751 so
->textsection
!= NULL
752 ? hex_string_custom (
753 (LONGEST
) so
->textsection
->endaddr
,
756 printf_unfiltered ("%-12s", so
->symbols_loaded
? "Yes" : "No");
757 printf_unfiltered ("%s\n", so
->so_name
);
760 if (so_list_head
== NULL
)
762 printf_unfiltered (_("No shared libraries loaded at this time.\n"));
770 solib_address -- check to see if an address is in a shared lib
774 char * solib_address (CORE_ADDR address)
778 Provides a hook for other gdb routines to discover whether or
779 not a particular address is within the mapped address space of
782 For example, this routine is called at one point to disable
783 breakpoints which are in shared libraries that are not currently
788 solib_address (CORE_ADDR address
)
790 struct so_list
*so
= 0; /* link map state variable */
792 for (so
= so_list_head
; so
; so
= so
->next
)
794 struct section_table
*p
;
796 for (p
= so
->sections
; p
< so
->sections_end
; p
++)
798 if (p
->addr
<= address
&& address
< p
->endaddr
)
799 return (so
->so_name
);
806 /* Called by free_all_symtabs */
811 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
813 /* This function is expected to handle ELF shared libraries. It is
814 also used on Solaris, which can run either ELF or a.out binaries
815 (for compatibility with SunOS 4), both of which can use shared
816 libraries. So we don't know whether we have an ELF executable or
817 an a.out executable until the user chooses an executable file.
819 ELF shared libraries don't get mapped into the address space
820 until after the program starts, so we'd better not try to insert
821 breakpoints in them immediately. We have to wait until the
822 dynamic linker has loaded them; we'll hit a bp_shlib_event
823 breakpoint (look for calls to create_solib_event_breakpoint) when
826 SunOS shared libraries seem to be different --- they're present
827 as soon as the process begins execution, so there's no need to
828 put off inserting breakpoints. There's also nowhere to put a
829 bp_shlib_event breakpoint, so if we put it off, we'll never get
832 So: disable breakpoints only if we're using ELF shared libs. */
834 && bfd_get_flavour (exec_bfd
) != bfd_target_aout_flavour
)
835 disable_breakpoints_in_shlibs (1);
839 struct so_list
*so
= so_list_head
;
840 so_list_head
= so
->next
;
842 remove_target_sections (so
->abfd
);
850 do_clear_solib (void *dummy
)
852 solib_cleanup_queued
= 0;
858 solib_create_inferior_hook -- shared library startup support
862 void solib_create_inferior_hook ()
866 When gdb starts up the inferior, it nurses it along (through the
867 shell) until it is ready to execute it's first instruction. At this
868 point, this function gets called via expansion of the macro
869 SOLIB_CREATE_INFERIOR_HOOK. */
872 solib_create_inferior_hook (void)
874 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
875 ops
->solib_create_inferior_hook();
880 in_solib_dynsym_resolve_code -- check to see if an address is in
881 dynamic loader's dynamic symbol
886 int in_solib_dynsym_resolve_code (CORE_ADDR pc)
890 Determine if PC is in the dynamic linker's symbol resolution
891 code. Return 1 if so, 0 otherwise.
895 in_solib_dynsym_resolve_code (CORE_ADDR pc
)
897 struct target_so_ops
*ops
= solib_ops (current_gdbarch
);
898 return ops
->in_dynsym_resolve_code (pc
);
905 sharedlibrary_command -- handle command to explicitly add library
909 static void sharedlibrary_command (char *args, int from_tty)
916 sharedlibrary_command (char *args
, int from_tty
)
919 solib_add (args
, from_tty
, (struct target_ops
*) 0, 1);
924 no_shared_libraries -- handle command to explicitly discard symbols
925 from shared libraries.
929 Implements the command "nosharedlibrary", which discards symbols
930 that have been auto-loaded from shared libraries. Symbols from
931 shared libraries that were added by explicit request of the user
932 are not discarded. Also called from remote.c. */
935 no_shared_libraries (char *ignored
, int from_tty
)
937 objfile_purge_solibs ();
938 do_clear_solib (NULL
);
942 reload_shared_libraries (char *ignored
, int from_tty
,
943 struct cmd_list_element
*e
)
945 no_shared_libraries (NULL
, from_tty
);
946 solib_add (NULL
, from_tty
, NULL
, auto_solib_add
);
950 show_auto_solib_add (struct ui_file
*file
, int from_tty
,
951 struct cmd_list_element
*c
, const char *value
)
953 fprintf_filtered (file
, _("Autoloading of shared library symbols is %s.\n"),
958 extern initialize_file_ftype _initialize_solib
; /* -Wmissing-prototypes */
961 _initialize_solib (void)
963 struct cmd_list_element
*c
;
965 solib_data
= gdbarch_data_register_pre_init (solib_init
);
967 add_com ("sharedlibrary", class_files
, sharedlibrary_command
,
968 _("Load shared object library symbols for files matching REGEXP."));
969 add_info ("sharedlibrary", info_sharedlibrary_command
,
970 _("Status of loaded shared object libraries."));
971 add_com ("nosharedlibrary", class_files
, no_shared_libraries
,
972 _("Unload all shared object library symbols."));
974 add_setshow_boolean_cmd ("auto-solib-add", class_support
,
975 &auto_solib_add
, _("\
976 Set autoloading of shared library symbols."), _("\
977 Show autoloading of shared library symbols."), _("\
978 If \"on\", symbols from all shared object libraries will be loaded\n\
979 automatically when the inferior begins execution, when the dynamic linker\n\
980 informs gdb that a new library has been loaded, or when attaching to the\n\
981 inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'."),
984 &setlist
, &showlist
);
986 add_setshow_filename_cmd ("sysroot", class_support
,
988 Set an alternate system root."), _("\
989 Show the current system root."), _("\
990 The system root is used to load absolute shared library symbol files.\n\
991 For other (relative) files, you can add directories using\n\
992 `set solib-search-path'."),
993 reload_shared_libraries
,
995 &setlist
, &showlist
);
997 add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support
, 0,
999 add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support
, 0,
1002 add_setshow_optional_filename_cmd ("solib-search-path", class_support
,
1003 &solib_search_path
, _("\
1004 Set the search path for loading non-absolute shared library symbol files."), _("\
1005 Show the search path for loading non-absolute shared library symbol files."), _("\
1006 This takes precedence over the environment variables PATH and LD_LIBRARY_PATH."),
1007 reload_shared_libraries
,
1008 show_solib_search_path
,
1009 &setlist
, &showlist
);