Commit | Line | Data |
---|---|---|
13437d4b | 1 | /* Handle shared libraries for GDB, the GNU Debugger. |
b6ba6518 KB |
2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
3 | 2000, 2001 | |
c906108c | 4 | Free Software Foundation, Inc. |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
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. | |
c906108c | 12 | |
c5aa993b JM |
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. | |
17 | ||
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., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c | 22 | |
c906108c SS |
23 | #include "defs.h" |
24 | ||
c906108c | 25 | #include <sys/types.h> |
c906108c | 26 | #include <fcntl.h> |
13437d4b | 27 | #include "gdb_string.h" |
c906108c SS |
28 | #include "symtab.h" |
29 | #include "bfd.h" | |
30 | #include "symfile.h" | |
31 | #include "objfiles.h" | |
32 | #include "gdbcore.h" | |
33 | #include "command.h" | |
34 | #include "target.h" | |
35 | #include "frame.h" | |
88987551 | 36 | #include "gdb_regex.h" |
c906108c SS |
37 | #include "inferior.h" |
38 | #include "environ.h" | |
39 | #include "language.h" | |
40 | #include "gdbcmd.h" | |
fa58ee11 | 41 | #include "completer.h" |
fe4e3eb8 | 42 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 43 | |
13437d4b | 44 | #include "solist.h" |
c906108c | 45 | |
13437d4b | 46 | /* external data declarations */ |
c906108c | 47 | |
13437d4b KB |
48 | /* FIXME: gdbarch needs to control this variable */ |
49 | struct target_so_ops *current_target_so_ops; | |
23e04971 MS |
50 | |
51 | /* local data declarations */ | |
07cd4b97 | 52 | |
c906108c | 53 | static struct so_list *so_list_head; /* List of known shared objects */ |
23e04971 | 54 | |
c5aa993b | 55 | static int solib_cleanup_queued = 0; /* make_run_cleanup called */ |
c906108c | 56 | |
c906108c SS |
57 | /* Local function prototypes */ |
58 | ||
a14ed312 | 59 | static void do_clear_solib (PTR); |
c906108c | 60 | |
c906108c SS |
61 | /* If non-zero, this is a prefix that will be added to the front of the name |
62 | shared libraries with an absolute filename for loading. */ | |
63 | static char *solib_absolute_prefix = NULL; | |
64 | ||
65 | /* If non-empty, this is a search path for loading non-absolute shared library | |
66 | symbol files. This takes precedence over the environment variables PATH | |
67 | and LD_LIBRARY_PATH. */ | |
68 | static char *solib_search_path = NULL; | |
69 | ||
e4f7b8c8 MS |
70 | /* |
71 | ||
72 | GLOBAL FUNCTION | |
73 | ||
74 | solib_open -- Find a shared library file and open it. | |
75 | ||
76 | SYNOPSIS | |
77 | ||
78 | int solib_open (char *in_patname, char **found_pathname); | |
79 | ||
80 | DESCRIPTION | |
81 | ||
82 | Global variable SOLIB_ABSOLUTE_PREFIX is used as a prefix directory | |
83 | to search for shared libraries if they have an absolute path. | |
84 | ||
85 | Global variable SOLIB_SEARCH_PATH is used as a prefix directory | |
86 | (or set of directories, as in LD_LIBRARY_PATH) to search for all | |
87 | shared libraries if not found in SOLIB_ABSOLUTE_PREFIX. | |
88 | ||
89 | Search order: | |
90 | * If path is absolute, look in SOLIB_ABSOLUTE_PREFIX. | |
b21f0843 | 91 | * If path is absolute or relative, look for it literally (unmodified). |
e4f7b8c8 MS |
92 | * Look in SOLIB_SEARCH_PATH. |
93 | * Look in inferior's $PATH. | |
94 | * Look in inferior's $LD_LIBRARY_PATH. | |
95 | ||
96 | RETURNS | |
b21f0843 | 97 | |
e4f7b8c8 MS |
98 | file handle for opened solib, or -1 for failure. */ |
99 | ||
100 | int | |
101 | solib_open (char *in_pathname, char **found_pathname) | |
102 | { | |
103 | int found_file = -1; | |
104 | char *temp_pathname = NULL; | |
fe4e3eb8 | 105 | char *p = in_pathname; |
e4f7b8c8 | 106 | |
fe4e3eb8 EZ |
107 | while (*p && !IS_DIR_SEPARATOR (*p)) |
108 | p++; | |
109 | ||
110 | if (*p) | |
e4f7b8c8 | 111 | { |
fe4e3eb8 | 112 | if (! IS_ABSOLUTE_PATH (in_pathname) || solib_absolute_prefix == NULL) |
a7ec76fe KB |
113 | temp_pathname = in_pathname; |
114 | else | |
115 | { | |
b21f0843 | 116 | int prefix_len = strlen (solib_absolute_prefix); |
a7ec76fe KB |
117 | |
118 | /* Remove trailing slashes from absolute prefix. */ | |
b21f0843 | 119 | while (prefix_len > 0 |
fe4e3eb8 | 120 | && IS_DIR_SEPARATOR (solib_absolute_prefix[prefix_len - 1])) |
a7ec76fe KB |
121 | prefix_len--; |
122 | ||
123 | /* Cat the prefixed pathname together. */ | |
124 | temp_pathname = alloca (prefix_len + strlen (in_pathname) + 1); | |
125 | strncpy (temp_pathname, solib_absolute_prefix, prefix_len); | |
126 | temp_pathname[prefix_len] = '\0'; | |
127 | strcat (temp_pathname, in_pathname); | |
a7ec76fe | 128 | } |
b21f0843 | 129 | |
e4f7b8c8 MS |
130 | /* Now see if we can open it. */ |
131 | found_file = open (temp_pathname, O_RDONLY, 0); | |
132 | } | |
133 | ||
134 | /* If not found, next search the solib_search_path (if any). */ | |
135 | if (found_file < 0 && solib_search_path != NULL) | |
136 | found_file = openp (solib_search_path, | |
137 | 1, in_pathname, O_RDONLY, 0, &temp_pathname); | |
138 | ||
139 | /* If not found, next search the inferior's $PATH environment variable. */ | |
140 | if (found_file < 0 && solib_search_path != NULL) | |
141 | found_file = openp (get_in_environ (inferior_environ, "PATH"), | |
142 | 1, in_pathname, O_RDONLY, 0, &temp_pathname); | |
143 | ||
144 | /* If not found, next search the inferior's $LD_LIBRARY_PATH | |
145 | environment variable. */ | |
146 | if (found_file < 0 && solib_search_path != NULL) | |
147 | found_file = openp (get_in_environ (inferior_environ, "LD_LIBRARY_PATH"), | |
148 | 1, in_pathname, O_RDONLY, 0, &temp_pathname); | |
149 | ||
150 | /* Done. If not found, tough luck. Return found_file and | |
151 | (optionally) found_pathname. */ | |
a7ec76fe | 152 | if (found_pathname != NULL && temp_pathname != NULL) |
4fcf66da | 153 | *found_pathname = xstrdup (temp_pathname); |
e4f7b8c8 MS |
154 | return found_file; |
155 | } | |
156 | ||
157 | ||
c906108c SS |
158 | /* |
159 | ||
c5aa993b | 160 | LOCAL FUNCTION |
c906108c | 161 | |
c5aa993b | 162 | solib_map_sections -- open bfd and build sections for shared lib |
c906108c | 163 | |
c5aa993b | 164 | SYNOPSIS |
c906108c | 165 | |
c5aa993b | 166 | static int solib_map_sections (struct so_list *so) |
c906108c | 167 | |
c5aa993b | 168 | DESCRIPTION |
c906108c | 169 | |
c5aa993b JM |
170 | Given a pointer to one of the shared objects in our list |
171 | of mapped objects, use the recorded name to open a bfd | |
172 | descriptor for the object, build a section table, and then | |
173 | relocate all the section addresses by the base address at | |
174 | which the shared object was mapped. | |
c906108c | 175 | |
c5aa993b | 176 | FIXMES |
c906108c | 177 | |
c5aa993b JM |
178 | In most (all?) cases the shared object file name recorded in the |
179 | dynamic linkage tables will be a fully qualified pathname. For | |
180 | cases where it isn't, do we really mimic the systems search | |
181 | mechanism correctly in the below code (particularly the tilde | |
182 | expansion stuff?). | |
c906108c SS |
183 | */ |
184 | ||
185 | static int | |
fba45db2 | 186 | solib_map_sections (PTR arg) |
c906108c SS |
187 | { |
188 | struct so_list *so = (struct so_list *) arg; /* catch_errors bogon */ | |
189 | char *filename; | |
190 | char *scratch_pathname; | |
191 | int scratch_chan; | |
192 | struct section_table *p; | |
193 | struct cleanup *old_chain; | |
194 | bfd *abfd; | |
c5aa993b JM |
195 | |
196 | filename = tilde_expand (so->so_name); | |
197 | ||
b8c9b27d | 198 | old_chain = make_cleanup (xfree, filename); |
e4f7b8c8 | 199 | scratch_chan = solib_open (filename, &scratch_pathname); |
c906108c | 200 | |
c906108c SS |
201 | if (scratch_chan < 0) |
202 | { | |
13437d4b KB |
203 | perror_with_name (filename); |
204 | } | |
104c1213 | 205 | |
e4f7b8c8 | 206 | /* Leave scratch_pathname allocated. abfd->name will point to it. */ |
13437d4b KB |
207 | abfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan); |
208 | if (!abfd) | |
23e04971 | 209 | { |
13437d4b KB |
210 | close (scratch_chan); |
211 | error ("Could not open `%s' as an executable file: %s", | |
212 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
213 | } | |
e4f7b8c8 | 214 | |
13437d4b KB |
215 | /* Leave bfd open, core_xfer_memory and "info files" need it. */ |
216 | so->abfd = abfd; | |
217 | abfd->cacheable = true; | |
23e04971 | 218 | |
e4f7b8c8 MS |
219 | /* copy full path name into so_name, so that later symbol_file_add |
220 | can find it */ | |
13437d4b KB |
221 | if (strlen (scratch_pathname) >= SO_NAME_MAX_PATH_SIZE) |
222 | error ("Full path name length of shared library exceeds SO_NAME_MAX_PATH_SIZE in so_list structure."); | |
223 | strcpy (so->so_name, scratch_pathname); | |
23e04971 | 224 | |
13437d4b KB |
225 | if (!bfd_check_format (abfd, bfd_object)) |
226 | { | |
227 | error ("\"%s\": not in executable format: %s.", | |
228 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
23e04971 | 229 | } |
13437d4b | 230 | if (build_section_table (abfd, &so->sections, &so->sections_end)) |
23e04971 | 231 | { |
13437d4b KB |
232 | error ("Can't find the file sections in `%s': %s", |
233 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
23e04971 | 234 | } |
104c1213 | 235 | |
13437d4b | 236 | for (p = so->sections; p < so->sections_end; p++) |
104c1213 | 237 | { |
13437d4b KB |
238 | /* Relocate the section binding addresses as recorded in the shared |
239 | object's file by the base address to which the object was actually | |
240 | mapped. */ | |
749499cb | 241 | TARGET_SO_RELOCATE_SECTION_ADDRESSES (so, p); |
13437d4b KB |
242 | if (STREQ (p->the_bfd_section->name, ".text")) |
243 | { | |
244 | so->textsection = p; | |
245 | } | |
104c1213 JM |
246 | } |
247 | ||
13437d4b KB |
248 | /* Free the file names, close the file now. */ |
249 | do_cleanups (old_chain); | |
104c1213 | 250 | |
13437d4b | 251 | return (1); |
104c1213 | 252 | } |
c906108c | 253 | |
07cd4b97 | 254 | /* LOCAL FUNCTION |
c906108c | 255 | |
07cd4b97 | 256 | free_so --- free a `struct so_list' object |
c906108c | 257 | |
c5aa993b | 258 | SYNOPSIS |
c906108c | 259 | |
07cd4b97 | 260 | void free_so (struct so_list *so) |
c906108c | 261 | |
c5aa993b | 262 | DESCRIPTION |
c906108c | 263 | |
07cd4b97 JB |
264 | Free the storage associated with the `struct so_list' object SO. |
265 | If we have opened a BFD for SO, close it. | |
c906108c | 266 | |
07cd4b97 JB |
267 | The caller is responsible for removing SO from whatever list it is |
268 | a member of. If we have placed SO's sections in some target's | |
269 | section table, the caller is responsible for removing them. | |
c906108c | 270 | |
07cd4b97 JB |
271 | This function doesn't mess with objfiles at all. If there is an |
272 | objfile associated with SO that needs to be removed, the caller is | |
273 | responsible for taking care of that. */ | |
274 | ||
13437d4b | 275 | void |
07cd4b97 | 276 | free_so (struct so_list *so) |
c906108c | 277 | { |
07cd4b97 | 278 | char *bfd_filename = 0; |
c5aa993b | 279 | |
07cd4b97 | 280 | if (so->sections) |
b8c9b27d | 281 | xfree (so->sections); |
07cd4b97 JB |
282 | |
283 | if (so->abfd) | |
c906108c | 284 | { |
07cd4b97 JB |
285 | bfd_filename = bfd_get_filename (so->abfd); |
286 | if (! bfd_close (so->abfd)) | |
287 | warning ("cannot close \"%s\": %s", | |
288 | bfd_filename, bfd_errmsg (bfd_get_error ())); | |
c906108c | 289 | } |
07cd4b97 JB |
290 | |
291 | if (bfd_filename) | |
b8c9b27d | 292 | xfree (bfd_filename); |
07cd4b97 | 293 | |
13437d4b | 294 | TARGET_SO_FREE_SO (so); |
07cd4b97 | 295 | |
b8c9b27d | 296 | xfree (so); |
c906108c SS |
297 | } |
298 | ||
07cd4b97 | 299 | |
c906108c SS |
300 | /* A small stub to get us past the arg-passing pinhole of catch_errors. */ |
301 | ||
302 | static int | |
fba45db2 | 303 | symbol_add_stub (PTR arg) |
c906108c | 304 | { |
07cd4b97 | 305 | register struct so_list *so = (struct so_list *) arg; /* catch_errs bogon */ |
62557bbc | 306 | struct section_addr_info *sap; |
c906108c | 307 | |
07cd4b97 JB |
308 | /* Have we already loaded this shared object? */ |
309 | ALL_OBJFILES (so->objfile) | |
310 | { | |
311 | if (strcmp (so->objfile->name, so->so_name) == 0) | |
312 | return 1; | |
313 | } | |
314 | ||
62557bbc KB |
315 | sap = build_section_addr_info_from_section_table (so->sections, |
316 | so->sections_end); | |
e7cf9df1 | 317 | |
62557bbc KB |
318 | so->objfile = symbol_file_add (so->so_name, so->from_tty, |
319 | sap, 0, OBJF_SHARED); | |
320 | free_section_addr_info (sap); | |
c906108c | 321 | |
07cd4b97 | 322 | return (1); |
c906108c SS |
323 | } |
324 | ||
c906108c | 325 | |
07cd4b97 | 326 | /* LOCAL FUNCTION |
c906108c | 327 | |
105b175f | 328 | update_solib_list --- synchronize GDB's shared object list with inferior's |
c906108c | 329 | |
c5aa993b | 330 | SYNOPSIS |
c906108c | 331 | |
105b175f | 332 | void update_solib_list (int from_tty, struct target_ops *TARGET) |
c906108c | 333 | |
07cd4b97 | 334 | Extract the list of currently loaded shared objects from the |
105b175f JB |
335 | inferior, and compare it with the list of shared objects currently |
336 | in GDB's so_list_head list. Edit so_list_head to bring it in sync | |
337 | with the inferior's new list. | |
c906108c | 338 | |
105b175f JB |
339 | If we notice that the inferior has unloaded some shared objects, |
340 | free any symbolic info GDB had read about those shared objects. | |
341 | ||
342 | Don't load symbolic info for any new shared objects; just add them | |
343 | to the list, and leave their symbols_loaded flag clear. | |
07cd4b97 JB |
344 | |
345 | If FROM_TTY is non-null, feel free to print messages about what | |
346 | we're doing. | |
c906108c | 347 | |
07cd4b97 JB |
348 | If TARGET is non-null, add the sections of all new shared objects |
349 | to TARGET's section table. Note that this doesn't remove any | |
350 | sections for shared objects that have been unloaded, and it | |
351 | doesn't check to see if the new shared objects are already present in | |
352 | the section table. But we only use this for core files and | |
353 | processes we've just attached to, so that's okay. */ | |
c906108c | 354 | |
07cd4b97 | 355 | void |
105b175f | 356 | update_solib_list (int from_tty, struct target_ops *target) |
07cd4b97 | 357 | { |
13437d4b | 358 | struct so_list *inferior = TARGET_SO_CURRENT_SOS (); |
07cd4b97 JB |
359 | struct so_list *gdb, **gdb_link; |
360 | ||
104c1213 JM |
361 | /* If we are attaching to a running process for which we |
362 | have not opened a symbol file, we may be able to get its | |
363 | symbols now! */ | |
364 | if (attach_flag && | |
365 | symfile_objfile == NULL) | |
13437d4b | 366 | catch_errors (TARGET_SO_OPEN_SYMBOL_FILE_OBJECT, (PTR) &from_tty, |
104c1213 JM |
367 | "Error reading attached process's symbol file.\n", |
368 | RETURN_MASK_ALL); | |
369 | ||
07cd4b97 JB |
370 | /* Since this function might actually add some elements to the |
371 | so_list_head list, arrange for it to be cleaned up when | |
372 | appropriate. */ | |
373 | if (!solib_cleanup_queued) | |
374 | { | |
375 | make_run_cleanup (do_clear_solib, NULL); | |
376 | solib_cleanup_queued = 1; | |
c906108c | 377 | } |
c5aa993b | 378 | |
07cd4b97 JB |
379 | /* GDB and the inferior's dynamic linker each maintain their own |
380 | list of currently loaded shared objects; we want to bring the | |
381 | former in sync with the latter. Scan both lists, seeing which | |
382 | shared objects appear where. There are three cases: | |
383 | ||
384 | - A shared object appears on both lists. This means that GDB | |
105b175f JB |
385 | knows about it already, and it's still loaded in the inferior. |
386 | Nothing needs to happen. | |
07cd4b97 JB |
387 | |
388 | - A shared object appears only on GDB's list. This means that | |
105b175f JB |
389 | the inferior has unloaded it. We should remove the shared |
390 | object from GDB's tables. | |
07cd4b97 JB |
391 | |
392 | - A shared object appears only on the inferior's list. This | |
105b175f JB |
393 | means that it's just been loaded. We should add it to GDB's |
394 | tables. | |
07cd4b97 JB |
395 | |
396 | So we walk GDB's list, checking each entry to see if it appears | |
397 | in the inferior's list too. If it does, no action is needed, and | |
398 | we remove it from the inferior's list. If it doesn't, the | |
399 | inferior has unloaded it, and we remove it from GDB's list. By | |
400 | the time we're done walking GDB's list, the inferior's list | |
401 | contains only the new shared objects, which we then add. */ | |
402 | ||
403 | gdb = so_list_head; | |
404 | gdb_link = &so_list_head; | |
405 | while (gdb) | |
c906108c | 406 | { |
07cd4b97 JB |
407 | struct so_list *i = inferior; |
408 | struct so_list **i_link = &inferior; | |
409 | ||
410 | /* Check to see whether the shared object *gdb also appears in | |
411 | the inferior's current list. */ | |
412 | while (i) | |
c906108c | 413 | { |
07cd4b97 JB |
414 | if (! strcmp (gdb->so_original_name, i->so_original_name)) |
415 | break; | |
416 | ||
417 | i_link = &i->next; | |
418 | i = *i_link; | |
c906108c | 419 | } |
c5aa993b | 420 | |
07cd4b97 JB |
421 | /* If the shared object appears on the inferior's list too, then |
422 | it's still loaded, so we don't need to do anything. Delete | |
423 | it from the inferior's list, and leave it on GDB's list. */ | |
424 | if (i) | |
c906108c | 425 | { |
07cd4b97 | 426 | *i_link = i->next; |
07cd4b97 JB |
427 | free_so (i); |
428 | gdb_link = &gdb->next; | |
429 | gdb = *gdb_link; | |
430 | } | |
431 | ||
432 | /* If it's not on the inferior's list, remove it from GDB's tables. */ | |
433 | else | |
434 | { | |
435 | *gdb_link = gdb->next; | |
07cd4b97 JB |
436 | |
437 | /* Unless the user loaded it explicitly, free SO's objfile. */ | |
e8930304 | 438 | if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED)) |
07cd4b97 JB |
439 | free_objfile (gdb->objfile); |
440 | ||
441 | /* Some targets' section tables might be referring to | |
442 | sections from so->abfd; remove them. */ | |
443 | remove_target_sections (gdb->abfd); | |
444 | ||
445 | free_so (gdb); | |
446 | gdb = *gdb_link; | |
c906108c SS |
447 | } |
448 | } | |
c5aa993b | 449 | |
07cd4b97 JB |
450 | /* Now the inferior's list contains only shared objects that don't |
451 | appear in GDB's list --- those that are newly loaded. Add them | |
e8930304 | 452 | to GDB's shared object list. */ |
07cd4b97 | 453 | if (inferior) |
c906108c | 454 | { |
07cd4b97 JB |
455 | struct so_list *i; |
456 | ||
457 | /* Add the new shared objects to GDB's list. */ | |
458 | *gdb_link = inferior; | |
459 | ||
e8930304 | 460 | /* Fill in the rest of each of the `struct so_list' nodes. */ |
07cd4b97 | 461 | for (i = inferior; i; i = i->next) |
c906108c | 462 | { |
07cd4b97 JB |
463 | i->from_tty = from_tty; |
464 | ||
465 | /* Fill in the rest of the `struct so_list' node. */ | |
466 | catch_errors (solib_map_sections, i, | |
467 | "Error while mapping shared library sections:\n", | |
468 | RETURN_MASK_ALL); | |
07cd4b97 | 469 | |
b41be06e ND |
470 | /* If requested, add the shared object's sections to the TARGET's |
471 | section table. Do this immediately after mapping the object so | |
472 | that later nodes in the list can query this object, as is needed | |
473 | in solib-osf.c. */ | |
474 | if (target) | |
c906108c | 475 | { |
b41be06e ND |
476 | int count = (i->sections_end - i->sections); |
477 | if (count > 0) | |
07cd4b97 | 478 | { |
b41be06e | 479 | int space = target_resize_to_sections (target, count); |
07cd4b97 JB |
480 | memcpy (target->to_sections + space, |
481 | i->sections, | |
482 | count * sizeof (i->sections[0])); | |
07cd4b97 | 483 | } |
c906108c SS |
484 | } |
485 | } | |
e8930304 | 486 | } |
105b175f JB |
487 | } |
488 | ||
489 | ||
490 | /* GLOBAL FUNCTION | |
491 | ||
492 | solib_add -- read in symbol info for newly added shared libraries | |
493 | ||
494 | SYNOPSIS | |
495 | ||
990f9fe3 FF |
496 | void solib_add (char *pattern, int from_tty, struct target_ops |
497 | *TARGET, int readsyms) | |
105b175f JB |
498 | |
499 | DESCRIPTION | |
500 | ||
501 | Read in symbolic information for any shared objects whose names | |
502 | match PATTERN. (If we've already read a shared object's symbol | |
503 | info, leave it alone.) If PATTERN is zero, read them all. | |
504 | ||
990f9fe3 FF |
505 | If READSYMS is 0, defer reading symbolic information until later |
506 | but still do any needed low level processing. | |
507 | ||
105b175f JB |
508 | FROM_TTY and TARGET are as described for update_solib_list, above. */ |
509 | ||
510 | void | |
990f9fe3 | 511 | solib_add (char *pattern, int from_tty, struct target_ops *target, int readsyms) |
105b175f JB |
512 | { |
513 | struct so_list *gdb; | |
514 | ||
515 | if (pattern) | |
516 | { | |
517 | char *re_err = re_comp (pattern); | |
518 | ||
519 | if (re_err) | |
520 | error ("Invalid regexp: %s", re_err); | |
521 | } | |
522 | ||
523 | update_solib_list (from_tty, target); | |
c906108c | 524 | |
105b175f JB |
525 | /* Walk the list of currently loaded shared libraries, and read |
526 | symbols for any that match the pattern --- or any whose symbols | |
527 | aren't already loaded, if no pattern was given. */ | |
e8930304 JB |
528 | { |
529 | int any_matches = 0; | |
530 | int loaded_any_symbols = 0; | |
c906108c | 531 | |
e8930304 JB |
532 | for (gdb = so_list_head; gdb; gdb = gdb->next) |
533 | if (! pattern || re_exec (gdb->so_name)) | |
534 | { | |
535 | any_matches = 1; | |
536 | ||
537 | if (gdb->symbols_loaded) | |
538 | { | |
539 | if (from_tty) | |
540 | printf_unfiltered ("Symbols already loaded for %s\n", | |
541 | gdb->so_name); | |
542 | } | |
990f9fe3 | 543 | else if (readsyms) |
e8930304 JB |
544 | { |
545 | if (catch_errors | |
546 | (symbol_add_stub, gdb, | |
547 | "Error while reading shared library symbols:\n", | |
548 | RETURN_MASK_ALL)) | |
549 | { | |
550 | if (from_tty) | |
551 | printf_unfiltered ("Loaded symbols for %s\n", | |
552 | gdb->so_name); | |
553 | gdb->symbols_loaded = 1; | |
554 | loaded_any_symbols = 1; | |
555 | } | |
556 | } | |
557 | } | |
558 | ||
559 | if (from_tty && pattern && ! any_matches) | |
560 | printf_unfiltered | |
561 | ("No loaded shared libraries match the pattern `%s'.\n", pattern); | |
562 | ||
563 | if (loaded_any_symbols) | |
564 | { | |
565 | /* Getting new symbols may change our opinion about what is | |
566 | frameless. */ | |
567 | reinit_frame_cache (); | |
568 | ||
13437d4b | 569 | TARGET_SO_SPECIAL_SYMBOL_HANDLING (); |
e8930304 JB |
570 | } |
571 | } | |
c906108c SS |
572 | } |
573 | ||
07cd4b97 | 574 | |
c906108c SS |
575 | /* |
576 | ||
c5aa993b | 577 | LOCAL FUNCTION |
c906108c | 578 | |
c5aa993b | 579 | info_sharedlibrary_command -- code for "info sharedlibrary" |
c906108c | 580 | |
c5aa993b | 581 | SYNOPSIS |
c906108c | 582 | |
c5aa993b | 583 | static void info_sharedlibrary_command () |
c906108c | 584 | |
c5aa993b | 585 | DESCRIPTION |
c906108c | 586 | |
c5aa993b JM |
587 | Walk through the shared library list and print information |
588 | about each attached library. | |
589 | */ | |
c906108c SS |
590 | |
591 | static void | |
fba45db2 | 592 | info_sharedlibrary_command (char *ignore, int from_tty) |
c906108c | 593 | { |
c5aa993b | 594 | register struct so_list *so = NULL; /* link map state variable */ |
c906108c SS |
595 | int header_done = 0; |
596 | int addr_width; | |
597 | char *addr_fmt; | |
f5b8946c | 598 | int arch_size; |
c906108c SS |
599 | |
600 | if (exec_bfd == NULL) | |
601 | { | |
4ce44c66 | 602 | printf_unfiltered ("No executable file.\n"); |
c906108c SS |
603 | return; |
604 | } | |
605 | ||
6ceadee4 | 606 | arch_size = bfd_get_arch_size (exec_bfd); |
b41be06e ND |
607 | if (arch_size == -1) |
608 | arch_size = bfd_arch_bits_per_address(exec_bfd); | |
609 | ||
610 | /* Default to 32-bit in case of failure. */ | |
f5b8946c MS |
611 | if (arch_size == 32 || arch_size == -1) |
612 | { | |
613 | addr_width = 8 + 4; | |
614 | addr_fmt = "08l"; | |
615 | } | |
616 | else if (arch_size == 64) | |
617 | { | |
618 | addr_width = 16 + 4; | |
619 | addr_fmt = "016l"; | |
620 | } | |
7f7e9482 AC |
621 | else |
622 | { | |
8e65ff28 AC |
623 | internal_error (__FILE__, __LINE__, |
624 | "bfd_get_arch_size() returned unknown size %d", | |
625 | arch_size); | |
7f7e9482 | 626 | } |
c906108c | 627 | |
105b175f | 628 | update_solib_list (from_tty, 0); |
07cd4b97 JB |
629 | |
630 | for (so = so_list_head; so; so = so->next) | |
c906108c | 631 | { |
c5aa993b | 632 | if (so->so_name[0]) |
c906108c SS |
633 | { |
634 | if (!header_done) | |
635 | { | |
c5aa993b JM |
636 | printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width, "From", |
637 | addr_width, "To", "Syms Read", | |
638 | "Shared Object Library"); | |
c906108c SS |
639 | header_done++; |
640 | } | |
641 | ||
642 | printf_unfiltered ("%-*s", addr_width, | |
749499cb | 643 | so->textsection != NULL |
a43ad351 MH |
644 | ? longest_local_hex_string_custom ( |
645 | (LONGEST) so->textsection->addr, | |
749499cb KB |
646 | addr_fmt) |
647 | : ""); | |
c906108c | 648 | printf_unfiltered ("%-*s", addr_width, |
749499cb | 649 | so->textsection != NULL |
a43ad351 MH |
650 | ? longest_local_hex_string_custom ( |
651 | (LONGEST) so->textsection->endaddr, | |
749499cb KB |
652 | addr_fmt) |
653 | : ""); | |
c5aa993b JM |
654 | printf_unfiltered ("%-12s", so->symbols_loaded ? "Yes" : "No"); |
655 | printf_unfiltered ("%s\n", so->so_name); | |
c906108c SS |
656 | } |
657 | } | |
658 | if (so_list_head == NULL) | |
659 | { | |
c5aa993b | 660 | printf_unfiltered ("No shared libraries loaded at this time.\n"); |
c906108c SS |
661 | } |
662 | } | |
663 | ||
664 | /* | |
665 | ||
c5aa993b | 666 | GLOBAL FUNCTION |
c906108c | 667 | |
c5aa993b | 668 | solib_address -- check to see if an address is in a shared lib |
c906108c | 669 | |
c5aa993b | 670 | SYNOPSIS |
c906108c | 671 | |
c5aa993b | 672 | char * solib_address (CORE_ADDR address) |
c906108c | 673 | |
c5aa993b | 674 | DESCRIPTION |
c906108c | 675 | |
c5aa993b JM |
676 | Provides a hook for other gdb routines to discover whether or |
677 | not a particular address is within the mapped address space of | |
749499cb | 678 | a shared library. |
c906108c | 679 | |
c5aa993b JM |
680 | For example, this routine is called at one point to disable |
681 | breakpoints which are in shared libraries that are not currently | |
682 | mapped in. | |
c906108c SS |
683 | */ |
684 | ||
685 | char * | |
fba45db2 | 686 | solib_address (CORE_ADDR address) |
c906108c | 687 | { |
c5aa993b JM |
688 | register struct so_list *so = 0; /* link map state variable */ |
689 | ||
07cd4b97 | 690 | for (so = so_list_head; so; so = so->next) |
c906108c | 691 | { |
749499cb KB |
692 | struct section_table *p; |
693 | ||
694 | for (p = so->sections; p < so->sections_end; p++) | |
695 | { | |
696 | if (p->addr <= address && address < p->endaddr) | |
697 | return (so->so_name); | |
698 | } | |
c906108c | 699 | } |
07cd4b97 | 700 | |
c906108c SS |
701 | return (0); |
702 | } | |
703 | ||
704 | /* Called by free_all_symtabs */ | |
705 | ||
c5aa993b | 706 | void |
fba45db2 | 707 | clear_solib (void) |
c906108c | 708 | { |
085dd6e6 JM |
709 | /* This function is expected to handle ELF shared libraries. It is |
710 | also used on Solaris, which can run either ELF or a.out binaries | |
711 | (for compatibility with SunOS 4), both of which can use shared | |
712 | libraries. So we don't know whether we have an ELF executable or | |
713 | an a.out executable until the user chooses an executable file. | |
714 | ||
715 | ELF shared libraries don't get mapped into the address space | |
716 | until after the program starts, so we'd better not try to insert | |
717 | breakpoints in them immediately. We have to wait until the | |
718 | dynamic linker has loaded them; we'll hit a bp_shlib_event | |
719 | breakpoint (look for calls to create_solib_event_breakpoint) when | |
720 | it's ready. | |
721 | ||
722 | SunOS shared libraries seem to be different --- they're present | |
723 | as soon as the process begins execution, so there's no need to | |
724 | put off inserting breakpoints. There's also nowhere to put a | |
725 | bp_shlib_event breakpoint, so if we put it off, we'll never get | |
726 | around to it. | |
727 | ||
728 | So: disable breakpoints only if we're using ELF shared libs. */ | |
729 | if (exec_bfd != NULL | |
730 | && bfd_get_flavour (exec_bfd) != bfd_target_aout_flavour) | |
731 | disable_breakpoints_in_shlibs (1); | |
732 | ||
c906108c SS |
733 | while (so_list_head) |
734 | { | |
07cd4b97 JB |
735 | struct so_list *so = so_list_head; |
736 | so_list_head = so->next; | |
2069d78d KB |
737 | if (so->abfd) |
738 | remove_target_sections (so->abfd); | |
07cd4b97 | 739 | free_so (so); |
c906108c | 740 | } |
07cd4b97 | 741 | |
13437d4b | 742 | TARGET_SO_CLEAR_SOLIB (); |
c906108c SS |
743 | } |
744 | ||
745 | static void | |
fba45db2 | 746 | do_clear_solib (PTR dummy) |
c906108c SS |
747 | { |
748 | solib_cleanup_queued = 0; | |
749 | clear_solib (); | |
750 | } | |
751 | ||
13437d4b | 752 | /* GLOBAL FUNCTION |
c5aa993b JM |
753 | |
754 | solib_create_inferior_hook -- shared library startup support | |
755 | ||
756 | SYNOPSIS | |
757 | ||
758 | void solib_create_inferior_hook() | |
759 | ||
760 | DESCRIPTION | |
761 | ||
762 | When gdb starts up the inferior, it nurses it along (through the | |
763 | shell) until it is ready to execute it's first instruction. At this | |
764 | point, this function gets called via expansion of the macro | |
13437d4b | 765 | SOLIB_CREATE_INFERIOR_HOOK. */ |
c5aa993b JM |
766 | |
767 | void | |
fba45db2 | 768 | solib_create_inferior_hook (void) |
c906108c | 769 | { |
13437d4b | 770 | TARGET_SO_SOLIB_CREATE_INFERIOR_HOOK (); |
c906108c SS |
771 | } |
772 | ||
d7fa2ae2 KB |
773 | /* GLOBAL FUNCTION |
774 | ||
775 | in_solib_dynsym_resolve_code -- check to see if an address is in | |
776 | dynamic loader's dynamic symbol | |
777 | resolution code | |
778 | ||
779 | SYNOPSIS | |
780 | ||
781 | int in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
782 | ||
783 | DESCRIPTION | |
784 | ||
785 | Determine if PC is in the dynamic linker's symbol resolution | |
786 | code. Return 1 if so, 0 otherwise. | |
787 | */ | |
788 | ||
789 | int | |
790 | in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
791 | { | |
792 | return TARGET_SO_IN_DYNSYM_RESOLVE_CODE (pc); | |
793 | } | |
c906108c SS |
794 | |
795 | /* | |
796 | ||
c5aa993b | 797 | LOCAL FUNCTION |
c906108c | 798 | |
c5aa993b | 799 | sharedlibrary_command -- handle command to explicitly add library |
c906108c | 800 | |
c5aa993b | 801 | SYNOPSIS |
c906108c | 802 | |
c5aa993b | 803 | static void sharedlibrary_command (char *args, int from_tty) |
c906108c | 804 | |
c5aa993b | 805 | DESCRIPTION |
c906108c | 806 | |
c5aa993b | 807 | */ |
c906108c SS |
808 | |
809 | static void | |
fba45db2 | 810 | sharedlibrary_command (char *args, int from_tty) |
c906108c SS |
811 | { |
812 | dont_repeat (); | |
990f9fe3 | 813 | solib_add (args, from_tty, (struct target_ops *) 0, 1); |
c906108c SS |
814 | } |
815 | ||
cb0ba49e MS |
816 | /* LOCAL FUNCTION |
817 | ||
818 | no_shared_libraries -- handle command to explicitly discard symbols | |
819 | from shared libraries. | |
820 | ||
821 | DESCRIPTION | |
822 | ||
823 | Implements the command "nosharedlibrary", which discards symbols | |
824 | that have been auto-loaded from shared libraries. Symbols from | |
825 | shared libraries that were added by explicit request of the user | |
826 | are not discarded. Also called from remote.c. */ | |
827 | ||
c60a7562 MS |
828 | void |
829 | no_shared_libraries (char *ignored, int from_tty) | |
830 | { | |
831 | objfile_purge_solibs (); | |
832 | do_clear_solib (NULL); | |
833 | } | |
c906108c SS |
834 | |
835 | void | |
fba45db2 | 836 | _initialize_solib (void) |
c906108c | 837 | { |
fa58ee11 EZ |
838 | struct cmd_list_element *c; |
839 | ||
c906108c SS |
840 | add_com ("sharedlibrary", class_files, sharedlibrary_command, |
841 | "Load shared object library symbols for files matching REGEXP."); | |
c5aa993b | 842 | add_info ("sharedlibrary", info_sharedlibrary_command, |
c906108c | 843 | "Status of loaded shared object libraries."); |
c60a7562 | 844 | add_com ("nosharedlibrary", class_files, no_shared_libraries, |
e89a4777 | 845 | "Unload all shared object library symbols."); |
c906108c SS |
846 | |
847 | add_show_from_set | |
b7209cb4 | 848 | (add_set_cmd ("auto-solib-add", class_support, var_boolean, |
c906108c SS |
849 | (char *) &auto_solib_add, |
850 | "Set autoloading of shared library symbols.\n\ | |
b7209cb4 FF |
851 | If \"on\", symbols from all shared object libraries will be loaded\n\ |
852 | automatically when the inferior begins execution, when the dynamic linker\n\ | |
853 | informs gdb that a new library has been loaded, or when attaching to the\n\ | |
854 | inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'.", | |
c906108c SS |
855 | &setlist), |
856 | &showlist); | |
857 | ||
fa58ee11 EZ |
858 | c = add_set_cmd ("solib-absolute-prefix", class_support, var_filename, |
859 | (char *) &solib_absolute_prefix, | |
860 | "Set prefix for loading absolute shared library symbol files.\n\ | |
c906108c | 861 | For other (relative) files, you can add values using `set solib-search-path'.", |
fa58ee11 EZ |
862 | &setlist); |
863 | add_show_from_set (c, &showlist); | |
864 | c->completer = filename_completer; | |
c906108c | 865 | |
fa58ee11 EZ |
866 | c = add_set_cmd ("solib-search-path", class_support, var_string, |
867 | (char *) &solib_search_path, | |
868 | "Set the search path for loading non-absolute shared library symbol files.\n\ | |
869 | This takes precedence over the environment variables PATH and LD_LIBRARY_PATH.", | |
870 | &setlist); | |
871 | add_show_from_set (c, &showlist); | |
872 | c->completer = filename_completer; | |
c906108c | 873 | } |