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