Commit | Line | Data |
---|---|---|
13437d4b | 1 | /* Handle shared libraries for GDB, the GNU Debugger. |
8554b7d5 | 2 | Copyright 1990, 91, 92, 93, 94, 95, 96, 98, 1999, 2000 |
c906108c | 3 | Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c | 21 | |
c906108c SS |
22 | #include "defs.h" |
23 | ||
c906108c | 24 | #include <sys/types.h> |
c906108c | 25 | #include <fcntl.h> |
13437d4b | 26 | #include "gdb_string.h" |
c906108c SS |
27 | #include "symtab.h" |
28 | #include "bfd.h" | |
29 | #include "symfile.h" | |
30 | #include "objfiles.h" | |
31 | #include "gdbcore.h" | |
32 | #include "command.h" | |
33 | #include "target.h" | |
34 | #include "frame.h" | |
88987551 | 35 | #include "gdb_regex.h" |
c906108c SS |
36 | #include "inferior.h" |
37 | #include "environ.h" | |
38 | #include "language.h" | |
39 | #include "gdbcmd.h" | |
40 | ||
13437d4b | 41 | #include "solist.h" |
c906108c | 42 | |
13437d4b | 43 | /* external data declarations */ |
c906108c | 44 | |
13437d4b KB |
45 | /* FIXME: gdbarch needs to control this variable */ |
46 | struct target_so_ops *current_target_so_ops; | |
23e04971 MS |
47 | |
48 | /* local data declarations */ | |
07cd4b97 | 49 | |
c906108c | 50 | static struct so_list *so_list_head; /* List of known shared objects */ |
23e04971 | 51 | |
c5aa993b | 52 | static int solib_cleanup_queued = 0; /* make_run_cleanup called */ |
c906108c | 53 | |
c906108c SS |
54 | /* Local function prototypes */ |
55 | ||
a14ed312 | 56 | static void do_clear_solib (PTR); |
c906108c | 57 | |
c906108c SS |
58 | /* If non-zero, this is a prefix that will be added to the front of the name |
59 | shared libraries with an absolute filename for loading. */ | |
60 | static char *solib_absolute_prefix = NULL; | |
61 | ||
62 | /* If non-empty, this is a search path for loading non-absolute shared library | |
63 | symbol files. This takes precedence over the environment variables PATH | |
64 | and LD_LIBRARY_PATH. */ | |
65 | static char *solib_search_path = NULL; | |
66 | ||
e4f7b8c8 MS |
67 | /* |
68 | ||
69 | GLOBAL FUNCTION | |
70 | ||
71 | solib_open -- Find a shared library file and open it. | |
72 | ||
73 | SYNOPSIS | |
74 | ||
75 | int solib_open (char *in_patname, char **found_pathname); | |
76 | ||
77 | DESCRIPTION | |
78 | ||
79 | Global variable SOLIB_ABSOLUTE_PREFIX is used as a prefix directory | |
80 | to search for shared libraries if they have an absolute path. | |
81 | ||
82 | Global variable SOLIB_SEARCH_PATH is used as a prefix directory | |
83 | (or set of directories, as in LD_LIBRARY_PATH) to search for all | |
84 | shared libraries if not found in SOLIB_ABSOLUTE_PREFIX. | |
85 | ||
86 | Search order: | |
87 | * If path is absolute, look in SOLIB_ABSOLUTE_PREFIX. | |
88 | * If path is absolute, look for it literally (unmodified). | |
89 | * Look in SOLIB_SEARCH_PATH. | |
90 | * Look in inferior's $PATH. | |
91 | * Look in inferior's $LD_LIBRARY_PATH. | |
92 | ||
93 | RETURNS | |
94 | ||
95 | file handle for opened solib, or -1 for failure. */ | |
96 | ||
97 | int | |
98 | solib_open (char *in_pathname, char **found_pathname) | |
99 | { | |
100 | int found_file = -1; | |
101 | char *temp_pathname = NULL; | |
102 | ||
a7ec76fe | 103 | if (ROOTED_P (in_pathname)) |
e4f7b8c8 | 104 | { |
a7ec76fe KB |
105 | if (solib_absolute_prefix == NULL) |
106 | temp_pathname = in_pathname; | |
107 | else | |
108 | { | |
109 | int prefix_len = strlen (solib_absolute_prefix); | |
110 | ||
111 | /* Remove trailing slashes from absolute prefix. */ | |
112 | while (prefix_len > 0 && SLASH_P (solib_absolute_prefix[prefix_len - 1])) | |
113 | prefix_len--; | |
114 | ||
115 | /* Cat the prefixed pathname together. */ | |
116 | temp_pathname = alloca (prefix_len + strlen (in_pathname) + 1); | |
117 | strncpy (temp_pathname, solib_absolute_prefix, prefix_len); | |
118 | temp_pathname[prefix_len] = '\0'; | |
119 | strcat (temp_pathname, in_pathname); | |
120 | ||
121 | } | |
e4f7b8c8 MS |
122 | /* Now see if we can open it. */ |
123 | found_file = open (temp_pathname, O_RDONLY, 0); | |
124 | } | |
125 | ||
126 | /* If not found, next search the solib_search_path (if any). */ | |
127 | if (found_file < 0 && solib_search_path != NULL) | |
128 | found_file = openp (solib_search_path, | |
129 | 1, in_pathname, O_RDONLY, 0, &temp_pathname); | |
130 | ||
131 | /* If not found, next search the inferior's $PATH environment variable. */ | |
132 | if (found_file < 0 && solib_search_path != NULL) | |
133 | found_file = openp (get_in_environ (inferior_environ, "PATH"), | |
134 | 1, in_pathname, O_RDONLY, 0, &temp_pathname); | |
135 | ||
136 | /* If not found, next search the inferior's $LD_LIBRARY_PATH | |
137 | environment variable. */ | |
138 | if (found_file < 0 && solib_search_path != NULL) | |
139 | found_file = openp (get_in_environ (inferior_environ, "LD_LIBRARY_PATH"), | |
140 | 1, in_pathname, O_RDONLY, 0, &temp_pathname); | |
141 | ||
142 | /* Done. If not found, tough luck. Return found_file and | |
143 | (optionally) found_pathname. */ | |
a7ec76fe | 144 | if (found_pathname != NULL && temp_pathname != NULL) |
e4f7b8c8 MS |
145 | *found_pathname = strsave (temp_pathname); |
146 | return found_file; | |
147 | } | |
148 | ||
149 | ||
c906108c SS |
150 | /* |
151 | ||
c5aa993b | 152 | LOCAL FUNCTION |
c906108c | 153 | |
c5aa993b | 154 | solib_map_sections -- open bfd and build sections for shared lib |
c906108c | 155 | |
c5aa993b | 156 | SYNOPSIS |
c906108c | 157 | |
c5aa993b | 158 | static int solib_map_sections (struct so_list *so) |
c906108c | 159 | |
c5aa993b | 160 | DESCRIPTION |
c906108c | 161 | |
c5aa993b JM |
162 | Given a pointer to one of the shared objects in our list |
163 | of mapped objects, use the recorded name to open a bfd | |
164 | descriptor for the object, build a section table, and then | |
165 | relocate all the section addresses by the base address at | |
166 | which the shared object was mapped. | |
c906108c | 167 | |
c5aa993b | 168 | FIXMES |
c906108c | 169 | |
c5aa993b JM |
170 | In most (all?) cases the shared object file name recorded in the |
171 | dynamic linkage tables will be a fully qualified pathname. For | |
172 | cases where it isn't, do we really mimic the systems search | |
173 | mechanism correctly in the below code (particularly the tilde | |
174 | expansion stuff?). | |
c906108c SS |
175 | */ |
176 | ||
177 | static int | |
fba45db2 | 178 | solib_map_sections (PTR arg) |
c906108c SS |
179 | { |
180 | struct so_list *so = (struct so_list *) arg; /* catch_errors bogon */ | |
181 | char *filename; | |
182 | char *scratch_pathname; | |
183 | int scratch_chan; | |
184 | struct section_table *p; | |
185 | struct cleanup *old_chain; | |
186 | bfd *abfd; | |
c5aa993b JM |
187 | |
188 | filename = tilde_expand (so->so_name); | |
189 | ||
c906108c | 190 | old_chain = make_cleanup (free, filename); |
e4f7b8c8 | 191 | scratch_chan = solib_open (filename, &scratch_pathname); |
c906108c | 192 | |
c906108c SS |
193 | if (scratch_chan < 0) |
194 | { | |
13437d4b KB |
195 | perror_with_name (filename); |
196 | } | |
104c1213 | 197 | |
e4f7b8c8 | 198 | /* Leave scratch_pathname allocated. abfd->name will point to it. */ |
13437d4b KB |
199 | abfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan); |
200 | if (!abfd) | |
23e04971 | 201 | { |
13437d4b KB |
202 | close (scratch_chan); |
203 | error ("Could not open `%s' as an executable file: %s", | |
204 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
205 | } | |
e4f7b8c8 | 206 | |
13437d4b KB |
207 | /* Leave bfd open, core_xfer_memory and "info files" need it. */ |
208 | so->abfd = abfd; | |
209 | abfd->cacheable = true; | |
23e04971 | 210 | |
e4f7b8c8 MS |
211 | /* copy full path name into so_name, so that later symbol_file_add |
212 | can find it */ | |
13437d4b KB |
213 | if (strlen (scratch_pathname) >= SO_NAME_MAX_PATH_SIZE) |
214 | error ("Full path name length of shared library exceeds SO_NAME_MAX_PATH_SIZE in so_list structure."); | |
215 | strcpy (so->so_name, scratch_pathname); | |
23e04971 | 216 | |
13437d4b KB |
217 | if (!bfd_check_format (abfd, bfd_object)) |
218 | { | |
219 | error ("\"%s\": not in executable format: %s.", | |
220 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
23e04971 | 221 | } |
13437d4b | 222 | if (build_section_table (abfd, &so->sections, &so->sections_end)) |
23e04971 | 223 | { |
13437d4b KB |
224 | error ("Can't find the file sections in `%s': %s", |
225 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
23e04971 | 226 | } |
104c1213 | 227 | |
13437d4b | 228 | for (p = so->sections; p < so->sections_end; p++) |
104c1213 | 229 | { |
13437d4b KB |
230 | /* Relocate the section binding addresses as recorded in the shared |
231 | object's file by the base address to which the object was actually | |
232 | mapped. */ | |
749499cb | 233 | TARGET_SO_RELOCATE_SECTION_ADDRESSES (so, p); |
13437d4b KB |
234 | if (STREQ (p->the_bfd_section->name, ".text")) |
235 | { | |
236 | so->textsection = p; | |
237 | } | |
104c1213 JM |
238 | } |
239 | ||
13437d4b KB |
240 | /* Free the file names, close the file now. */ |
241 | do_cleanups (old_chain); | |
104c1213 | 242 | |
13437d4b | 243 | return (1); |
104c1213 | 244 | } |
c906108c | 245 | |
07cd4b97 | 246 | /* LOCAL FUNCTION |
c906108c | 247 | |
07cd4b97 | 248 | free_so --- free a `struct so_list' object |
c906108c | 249 | |
c5aa993b | 250 | SYNOPSIS |
c906108c | 251 | |
07cd4b97 | 252 | void free_so (struct so_list *so) |
c906108c | 253 | |
c5aa993b | 254 | DESCRIPTION |
c906108c | 255 | |
07cd4b97 JB |
256 | Free the storage associated with the `struct so_list' object SO. |
257 | If we have opened a BFD for SO, close it. | |
c906108c | 258 | |
07cd4b97 JB |
259 | The caller is responsible for removing SO from whatever list it is |
260 | a member of. If we have placed SO's sections in some target's | |
261 | section table, the caller is responsible for removing them. | |
c906108c | 262 | |
07cd4b97 JB |
263 | This function doesn't mess with objfiles at all. If there is an |
264 | objfile associated with SO that needs to be removed, the caller is | |
265 | responsible for taking care of that. */ | |
266 | ||
13437d4b | 267 | void |
07cd4b97 | 268 | free_so (struct so_list *so) |
c906108c | 269 | { |
07cd4b97 | 270 | char *bfd_filename = 0; |
c5aa993b | 271 | |
07cd4b97 JB |
272 | if (so->sections) |
273 | free (so->sections); | |
274 | ||
275 | if (so->abfd) | |
c906108c | 276 | { |
07cd4b97 JB |
277 | bfd_filename = bfd_get_filename (so->abfd); |
278 | if (! bfd_close (so->abfd)) | |
279 | warning ("cannot close \"%s\": %s", | |
280 | bfd_filename, bfd_errmsg (bfd_get_error ())); | |
c906108c | 281 | } |
07cd4b97 JB |
282 | |
283 | if (bfd_filename) | |
284 | free (bfd_filename); | |
285 | ||
13437d4b | 286 | TARGET_SO_FREE_SO (so); |
07cd4b97 | 287 | |
13437d4b | 288 | free (so); |
c906108c SS |
289 | } |
290 | ||
07cd4b97 | 291 | |
c906108c SS |
292 | /* A small stub to get us past the arg-passing pinhole of catch_errors. */ |
293 | ||
294 | static int | |
fba45db2 | 295 | symbol_add_stub (PTR arg) |
c906108c | 296 | { |
07cd4b97 | 297 | register struct so_list *so = (struct so_list *) arg; /* catch_errs bogon */ |
62557bbc | 298 | struct section_addr_info *sap; |
c906108c | 299 | |
07cd4b97 JB |
300 | /* Have we already loaded this shared object? */ |
301 | ALL_OBJFILES (so->objfile) | |
302 | { | |
303 | if (strcmp (so->objfile->name, so->so_name) == 0) | |
304 | return 1; | |
305 | } | |
306 | ||
62557bbc KB |
307 | sap = build_section_addr_info_from_section_table (so->sections, |
308 | so->sections_end); | |
e7cf9df1 | 309 | |
62557bbc KB |
310 | so->objfile = symbol_file_add (so->so_name, so->from_tty, |
311 | sap, 0, OBJF_SHARED); | |
312 | free_section_addr_info (sap); | |
c906108c | 313 | |
07cd4b97 | 314 | return (1); |
c906108c SS |
315 | } |
316 | ||
c906108c | 317 | |
07cd4b97 | 318 | /* LOCAL FUNCTION |
c906108c | 319 | |
105b175f | 320 | update_solib_list --- synchronize GDB's shared object list with inferior's |
c906108c | 321 | |
c5aa993b | 322 | SYNOPSIS |
c906108c | 323 | |
105b175f | 324 | void update_solib_list (int from_tty, struct target_ops *TARGET) |
c906108c | 325 | |
07cd4b97 | 326 | Extract the list of currently loaded shared objects from the |
105b175f JB |
327 | inferior, and compare it with the list of shared objects currently |
328 | in GDB's so_list_head list. Edit so_list_head to bring it in sync | |
329 | with the inferior's new list. | |
c906108c | 330 | |
105b175f JB |
331 | If we notice that the inferior has unloaded some shared objects, |
332 | free any symbolic info GDB had read about those shared objects. | |
333 | ||
334 | Don't load symbolic info for any new shared objects; just add them | |
335 | to the list, and leave their symbols_loaded flag clear. | |
07cd4b97 JB |
336 | |
337 | If FROM_TTY is non-null, feel free to print messages about what | |
338 | we're doing. | |
c906108c | 339 | |
07cd4b97 JB |
340 | If TARGET is non-null, add the sections of all new shared objects |
341 | to TARGET's section table. Note that this doesn't remove any | |
342 | sections for shared objects that have been unloaded, and it | |
343 | doesn't check to see if the new shared objects are already present in | |
344 | the section table. But we only use this for core files and | |
345 | processes we've just attached to, so that's okay. */ | |
c906108c | 346 | |
07cd4b97 | 347 | void |
105b175f | 348 | update_solib_list (int from_tty, struct target_ops *target) |
07cd4b97 | 349 | { |
13437d4b | 350 | struct so_list *inferior = TARGET_SO_CURRENT_SOS (); |
07cd4b97 JB |
351 | struct so_list *gdb, **gdb_link; |
352 | ||
104c1213 JM |
353 | /* If we are attaching to a running process for which we |
354 | have not opened a symbol file, we may be able to get its | |
355 | symbols now! */ | |
356 | if (attach_flag && | |
357 | symfile_objfile == NULL) | |
13437d4b | 358 | catch_errors (TARGET_SO_OPEN_SYMBOL_FILE_OBJECT, (PTR) &from_tty, |
104c1213 JM |
359 | "Error reading attached process's symbol file.\n", |
360 | RETURN_MASK_ALL); | |
361 | ||
07cd4b97 JB |
362 | /* Since this function might actually add some elements to the |
363 | so_list_head list, arrange for it to be cleaned up when | |
364 | appropriate. */ | |
365 | if (!solib_cleanup_queued) | |
366 | { | |
367 | make_run_cleanup (do_clear_solib, NULL); | |
368 | solib_cleanup_queued = 1; | |
c906108c | 369 | } |
c5aa993b | 370 | |
07cd4b97 JB |
371 | /* GDB and the inferior's dynamic linker each maintain their own |
372 | list of currently loaded shared objects; we want to bring the | |
373 | former in sync with the latter. Scan both lists, seeing which | |
374 | shared objects appear where. There are three cases: | |
375 | ||
376 | - A shared object appears on both lists. This means that GDB | |
105b175f JB |
377 | knows about it already, and it's still loaded in the inferior. |
378 | Nothing needs to happen. | |
07cd4b97 JB |
379 | |
380 | - A shared object appears only on GDB's list. This means that | |
105b175f JB |
381 | the inferior has unloaded it. We should remove the shared |
382 | object from GDB's tables. | |
07cd4b97 JB |
383 | |
384 | - A shared object appears only on the inferior's list. This | |
105b175f JB |
385 | means that it's just been loaded. We should add it to GDB's |
386 | tables. | |
07cd4b97 JB |
387 | |
388 | So we walk GDB's list, checking each entry to see if it appears | |
389 | in the inferior's list too. If it does, no action is needed, and | |
390 | we remove it from the inferior's list. If it doesn't, the | |
391 | inferior has unloaded it, and we remove it from GDB's list. By | |
392 | the time we're done walking GDB's list, the inferior's list | |
393 | contains only the new shared objects, which we then add. */ | |
394 | ||
395 | gdb = so_list_head; | |
396 | gdb_link = &so_list_head; | |
397 | while (gdb) | |
c906108c | 398 | { |
07cd4b97 JB |
399 | struct so_list *i = inferior; |
400 | struct so_list **i_link = &inferior; | |
401 | ||
402 | /* Check to see whether the shared object *gdb also appears in | |
403 | the inferior's current list. */ | |
404 | while (i) | |
c906108c | 405 | { |
07cd4b97 JB |
406 | if (! strcmp (gdb->so_original_name, i->so_original_name)) |
407 | break; | |
408 | ||
409 | i_link = &i->next; | |
410 | i = *i_link; | |
c906108c | 411 | } |
c5aa993b | 412 | |
07cd4b97 JB |
413 | /* If the shared object appears on the inferior's list too, then |
414 | it's still loaded, so we don't need to do anything. Delete | |
415 | it from the inferior's list, and leave it on GDB's list. */ | |
416 | if (i) | |
c906108c | 417 | { |
07cd4b97 | 418 | *i_link = i->next; |
07cd4b97 JB |
419 | free_so (i); |
420 | gdb_link = &gdb->next; | |
421 | gdb = *gdb_link; | |
422 | } | |
423 | ||
424 | /* If it's not on the inferior's list, remove it from GDB's tables. */ | |
425 | else | |
426 | { | |
427 | *gdb_link = gdb->next; | |
07cd4b97 JB |
428 | |
429 | /* Unless the user loaded it explicitly, free SO's objfile. */ | |
e8930304 | 430 | if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED)) |
07cd4b97 JB |
431 | free_objfile (gdb->objfile); |
432 | ||
433 | /* Some targets' section tables might be referring to | |
434 | sections from so->abfd; remove them. */ | |
435 | remove_target_sections (gdb->abfd); | |
436 | ||
437 | free_so (gdb); | |
438 | gdb = *gdb_link; | |
c906108c SS |
439 | } |
440 | } | |
c5aa993b | 441 | |
07cd4b97 JB |
442 | /* Now the inferior's list contains only shared objects that don't |
443 | appear in GDB's list --- those that are newly loaded. Add them | |
e8930304 | 444 | to GDB's shared object list. */ |
07cd4b97 | 445 | if (inferior) |
c906108c | 446 | { |
07cd4b97 JB |
447 | struct so_list *i; |
448 | ||
449 | /* Add the new shared objects to GDB's list. */ | |
450 | *gdb_link = inferior; | |
451 | ||
e8930304 | 452 | /* Fill in the rest of each of the `struct so_list' nodes. */ |
07cd4b97 | 453 | for (i = inferior; i; i = i->next) |
c906108c | 454 | { |
07cd4b97 JB |
455 | i->from_tty = from_tty; |
456 | ||
457 | /* Fill in the rest of the `struct so_list' node. */ | |
458 | catch_errors (solib_map_sections, i, | |
459 | "Error while mapping shared library sections:\n", | |
460 | RETURN_MASK_ALL); | |
07cd4b97 JB |
461 | } |
462 | ||
463 | /* If requested, add the shared objects' sections to the the | |
464 | TARGET's section table. */ | |
465 | if (target) | |
466 | { | |
467 | int new_sections; | |
468 | ||
469 | /* Figure out how many sections we'll need to add in total. */ | |
470 | new_sections = 0; | |
471 | for (i = inferior; i; i = i->next) | |
472 | new_sections += (i->sections_end - i->sections); | |
473 | ||
474 | if (new_sections > 0) | |
c906108c | 475 | { |
07cd4b97 JB |
476 | int space = target_resize_to_sections (target, new_sections); |
477 | ||
478 | for (i = inferior; i; i = i->next) | |
479 | { | |
480 | int count = (i->sections_end - i->sections); | |
481 | memcpy (target->to_sections + space, | |
482 | i->sections, | |
483 | count * sizeof (i->sections[0])); | |
484 | space += count; | |
485 | } | |
c906108c SS |
486 | } |
487 | } | |
e8930304 | 488 | } |
105b175f JB |
489 | } |
490 | ||
491 | ||
492 | /* GLOBAL FUNCTION | |
493 | ||
494 | solib_add -- read in symbol info for newly added shared libraries | |
495 | ||
496 | SYNOPSIS | |
497 | ||
498 | void solib_add (char *pattern, int from_tty, struct target_ops *TARGET) | |
499 | ||
500 | DESCRIPTION | |
501 | ||
502 | Read in symbolic information for any shared objects whose names | |
503 | match PATTERN. (If we've already read a shared object's symbol | |
504 | info, leave it alone.) If PATTERN is zero, read them all. | |
505 | ||
506 | FROM_TTY and TARGET are as described for update_solib_list, above. */ | |
507 | ||
508 | void | |
509 | solib_add (char *pattern, int from_tty, struct target_ops *target) | |
510 | { | |
511 | struct so_list *gdb; | |
512 | ||
513 | if (pattern) | |
514 | { | |
515 | char *re_err = re_comp (pattern); | |
516 | ||
517 | if (re_err) | |
518 | error ("Invalid regexp: %s", re_err); | |
519 | } | |
520 | ||
521 | update_solib_list (from_tty, target); | |
c906108c | 522 | |
105b175f JB |
523 | /* Walk the list of currently loaded shared libraries, and read |
524 | symbols for any that match the pattern --- or any whose symbols | |
525 | aren't already loaded, if no pattern was given. */ | |
e8930304 JB |
526 | { |
527 | int any_matches = 0; | |
528 | int loaded_any_symbols = 0; | |
c906108c | 529 | |
e8930304 JB |
530 | for (gdb = so_list_head; gdb; gdb = gdb->next) |
531 | if (! pattern || re_exec (gdb->so_name)) | |
532 | { | |
533 | any_matches = 1; | |
534 | ||
535 | if (gdb->symbols_loaded) | |
536 | { | |
537 | if (from_tty) | |
538 | printf_unfiltered ("Symbols already loaded for %s\n", | |
539 | gdb->so_name); | |
540 | } | |
541 | else | |
542 | { | |
543 | if (catch_errors | |
544 | (symbol_add_stub, gdb, | |
545 | "Error while reading shared library symbols:\n", | |
546 | RETURN_MASK_ALL)) | |
547 | { | |
548 | if (from_tty) | |
549 | printf_unfiltered ("Loaded symbols for %s\n", | |
550 | gdb->so_name); | |
551 | gdb->symbols_loaded = 1; | |
552 | loaded_any_symbols = 1; | |
553 | } | |
554 | } | |
555 | } | |
556 | ||
557 | if (from_tty && pattern && ! any_matches) | |
558 | printf_unfiltered | |
559 | ("No loaded shared libraries match the pattern `%s'.\n", pattern); | |
560 | ||
561 | if (loaded_any_symbols) | |
562 | { | |
563 | /* Getting new symbols may change our opinion about what is | |
564 | frameless. */ | |
565 | reinit_frame_cache (); | |
566 | ||
13437d4b | 567 | TARGET_SO_SPECIAL_SYMBOL_HANDLING (); |
e8930304 JB |
568 | } |
569 | } | |
c906108c SS |
570 | } |
571 | ||
07cd4b97 | 572 | |
c906108c SS |
573 | /* |
574 | ||
c5aa993b | 575 | LOCAL FUNCTION |
c906108c | 576 | |
c5aa993b | 577 | info_sharedlibrary_command -- code for "info sharedlibrary" |
c906108c | 578 | |
c5aa993b | 579 | SYNOPSIS |
c906108c | 580 | |
c5aa993b | 581 | static void info_sharedlibrary_command () |
c906108c | 582 | |
c5aa993b | 583 | DESCRIPTION |
c906108c | 584 | |
c5aa993b JM |
585 | Walk through the shared library list and print information |
586 | about each attached library. | |
587 | */ | |
c906108c SS |
588 | |
589 | static void | |
fba45db2 | 590 | info_sharedlibrary_command (char *ignore, int from_tty) |
c906108c | 591 | { |
c5aa993b | 592 | register struct so_list *so = NULL; /* link map state variable */ |
c906108c SS |
593 | int header_done = 0; |
594 | int addr_width; | |
595 | char *addr_fmt; | |
f5b8946c | 596 | int arch_size; |
c906108c SS |
597 | |
598 | if (exec_bfd == NULL) | |
599 | { | |
4ce44c66 | 600 | printf_unfiltered ("No executable file.\n"); |
c906108c SS |
601 | return; |
602 | } | |
603 | ||
6ceadee4 | 604 | arch_size = bfd_get_arch_size (exec_bfd); |
f5b8946c MS |
605 | /* Default to 32-bit in case of failure (non-elf). */ |
606 | if (arch_size == 32 || arch_size == -1) | |
607 | { | |
608 | addr_width = 8 + 4; | |
609 | addr_fmt = "08l"; | |
610 | } | |
611 | else if (arch_size == 64) | |
612 | { | |
613 | addr_width = 16 + 4; | |
614 | addr_fmt = "016l"; | |
615 | } | |
7f7e9482 AC |
616 | else |
617 | { | |
618 | internal_error ("%s:%d: bfd_get_arch_size() returned unknown size %d", | |
619 | __FILE__, __LINE__, arch_size); | |
620 | } | |
c906108c | 621 | |
105b175f | 622 | update_solib_list (from_tty, 0); |
07cd4b97 JB |
623 | |
624 | for (so = so_list_head; so; so = so->next) | |
c906108c | 625 | { |
c5aa993b | 626 | if (so->so_name[0]) |
c906108c SS |
627 | { |
628 | if (!header_done) | |
629 | { | |
c5aa993b JM |
630 | printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width, "From", |
631 | addr_width, "To", "Syms Read", | |
632 | "Shared Object Library"); | |
c906108c SS |
633 | header_done++; |
634 | } | |
635 | ||
636 | printf_unfiltered ("%-*s", addr_width, | |
749499cb KB |
637 | so->textsection != NULL |
638 | ? local_hex_string_custom ( | |
639 | (unsigned long) so->textsection->addr, | |
640 | addr_fmt) | |
641 | : ""); | |
c906108c | 642 | printf_unfiltered ("%-*s", addr_width, |
749499cb KB |
643 | so->textsection != NULL |
644 | ? local_hex_string_custom ( | |
645 | (unsigned long) so->textsection->endaddr, | |
646 | addr_fmt) | |
647 | : ""); | |
c5aa993b JM |
648 | printf_unfiltered ("%-12s", so->symbols_loaded ? "Yes" : "No"); |
649 | printf_unfiltered ("%s\n", so->so_name); | |
c906108c SS |
650 | } |
651 | } | |
652 | if (so_list_head == NULL) | |
653 | { | |
c5aa993b | 654 | printf_unfiltered ("No shared libraries loaded at this time.\n"); |
c906108c SS |
655 | } |
656 | } | |
657 | ||
658 | /* | |
659 | ||
c5aa993b | 660 | GLOBAL FUNCTION |
c906108c | 661 | |
c5aa993b | 662 | solib_address -- check to see if an address is in a shared lib |
c906108c | 663 | |
c5aa993b | 664 | SYNOPSIS |
c906108c | 665 | |
c5aa993b | 666 | char * solib_address (CORE_ADDR address) |
c906108c | 667 | |
c5aa993b | 668 | DESCRIPTION |
c906108c | 669 | |
c5aa993b JM |
670 | Provides a hook for other gdb routines to discover whether or |
671 | not a particular address is within the mapped address space of | |
749499cb | 672 | a shared library. |
c906108c | 673 | |
c5aa993b JM |
674 | For example, this routine is called at one point to disable |
675 | breakpoints which are in shared libraries that are not currently | |
676 | mapped in. | |
c906108c SS |
677 | */ |
678 | ||
679 | char * | |
fba45db2 | 680 | solib_address (CORE_ADDR address) |
c906108c | 681 | { |
c5aa993b JM |
682 | register struct so_list *so = 0; /* link map state variable */ |
683 | ||
07cd4b97 | 684 | for (so = so_list_head; so; so = so->next) |
c906108c | 685 | { |
749499cb KB |
686 | struct section_table *p; |
687 | ||
688 | for (p = so->sections; p < so->sections_end; p++) | |
689 | { | |
690 | if (p->addr <= address && address < p->endaddr) | |
691 | return (so->so_name); | |
692 | } | |
c906108c | 693 | } |
07cd4b97 | 694 | |
c906108c SS |
695 | return (0); |
696 | } | |
697 | ||
698 | /* Called by free_all_symtabs */ | |
699 | ||
c5aa993b | 700 | void |
fba45db2 | 701 | clear_solib (void) |
c906108c | 702 | { |
085dd6e6 JM |
703 | /* This function is expected to handle ELF shared libraries. It is |
704 | also used on Solaris, which can run either ELF or a.out binaries | |
705 | (for compatibility with SunOS 4), both of which can use shared | |
706 | libraries. So we don't know whether we have an ELF executable or | |
707 | an a.out executable until the user chooses an executable file. | |
708 | ||
709 | ELF shared libraries don't get mapped into the address space | |
710 | until after the program starts, so we'd better not try to insert | |
711 | breakpoints in them immediately. We have to wait until the | |
712 | dynamic linker has loaded them; we'll hit a bp_shlib_event | |
713 | breakpoint (look for calls to create_solib_event_breakpoint) when | |
714 | it's ready. | |
715 | ||
716 | SunOS shared libraries seem to be different --- they're present | |
717 | as soon as the process begins execution, so there's no need to | |
718 | put off inserting breakpoints. There's also nowhere to put a | |
719 | bp_shlib_event breakpoint, so if we put it off, we'll never get | |
720 | around to it. | |
721 | ||
722 | So: disable breakpoints only if we're using ELF shared libs. */ | |
723 | if (exec_bfd != NULL | |
724 | && bfd_get_flavour (exec_bfd) != bfd_target_aout_flavour) | |
725 | disable_breakpoints_in_shlibs (1); | |
726 | ||
c906108c SS |
727 | while (so_list_head) |
728 | { | |
07cd4b97 JB |
729 | struct so_list *so = so_list_head; |
730 | so_list_head = so->next; | |
731 | free_so (so); | |
c906108c | 732 | } |
07cd4b97 | 733 | |
13437d4b | 734 | TARGET_SO_CLEAR_SOLIB (); |
c906108c SS |
735 | } |
736 | ||
737 | static void | |
fba45db2 | 738 | do_clear_solib (PTR dummy) |
c906108c SS |
739 | { |
740 | solib_cleanup_queued = 0; | |
741 | clear_solib (); | |
742 | } | |
743 | ||
13437d4b | 744 | /* GLOBAL FUNCTION |
c5aa993b JM |
745 | |
746 | solib_create_inferior_hook -- shared library startup support | |
747 | ||
748 | SYNOPSIS | |
749 | ||
750 | void solib_create_inferior_hook() | |
751 | ||
752 | DESCRIPTION | |
753 | ||
754 | When gdb starts up the inferior, it nurses it along (through the | |
755 | shell) until it is ready to execute it's first instruction. At this | |
756 | point, this function gets called via expansion of the macro | |
13437d4b | 757 | SOLIB_CREATE_INFERIOR_HOOK. */ |
c5aa993b JM |
758 | |
759 | void | |
fba45db2 | 760 | solib_create_inferior_hook (void) |
c906108c | 761 | { |
13437d4b | 762 | TARGET_SO_SOLIB_CREATE_INFERIOR_HOOK (); |
c906108c SS |
763 | } |
764 | ||
765 | ||
766 | /* | |
767 | ||
c5aa993b | 768 | LOCAL FUNCTION |
c906108c | 769 | |
c5aa993b | 770 | sharedlibrary_command -- handle command to explicitly add library |
c906108c | 771 | |
c5aa993b | 772 | SYNOPSIS |
c906108c | 773 | |
c5aa993b | 774 | static void sharedlibrary_command (char *args, int from_tty) |
c906108c | 775 | |
c5aa993b | 776 | DESCRIPTION |
c906108c | 777 | |
c5aa993b | 778 | */ |
c906108c SS |
779 | |
780 | static void | |
fba45db2 | 781 | sharedlibrary_command (char *args, int from_tty) |
c906108c SS |
782 | { |
783 | dont_repeat (); | |
784 | solib_add (args, from_tty, (struct target_ops *) 0); | |
785 | } | |
786 | ||
c906108c SS |
787 | |
788 | void | |
fba45db2 | 789 | _initialize_solib (void) |
c906108c | 790 | { |
c906108c SS |
791 | add_com ("sharedlibrary", class_files, sharedlibrary_command, |
792 | "Load shared object library symbols for files matching REGEXP."); | |
c5aa993b | 793 | add_info ("sharedlibrary", info_sharedlibrary_command, |
c906108c SS |
794 | "Status of loaded shared object libraries."); |
795 | ||
796 | add_show_from_set | |
797 | (add_set_cmd ("auto-solib-add", class_support, var_zinteger, | |
798 | (char *) &auto_solib_add, | |
799 | "Set autoloading of shared library symbols.\n\ | |
800 | If nonzero, symbols from all shared object libraries will be loaded\n\ | |
801 | automatically when the inferior begins execution or when the dynamic linker\n\ | |
802 | informs gdb that a new library has been loaded. Otherwise, symbols\n\ | |
803 | must be loaded manually, using `sharedlibrary'.", | |
804 | &setlist), | |
805 | &showlist); | |
806 | ||
807 | add_show_from_set | |
808 | (add_set_cmd ("solib-absolute-prefix", class_support, var_filename, | |
809 | (char *) &solib_absolute_prefix, | |
810 | "Set prefix for loading absolute shared library symbol files.\n\ | |
811 | For other (relative) files, you can add values using `set solib-search-path'.", | |
812 | &setlist), | |
813 | &showlist); | |
814 | add_show_from_set | |
815 | (add_set_cmd ("solib-search-path", class_support, var_string, | |
816 | (char *) &solib_search_path, | |
817 | "Set the search path for loading non-absolute shared library symbol files.\n\ | |
818 | This takes precedence over the environment variables PATH and LD_LIBRARY_PATH.", | |
819 | &setlist), | |
820 | &showlist); | |
821 | ||
c906108c | 822 | } |