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