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 | ||
67 | /* | |
68 | ||
c5aa993b | 69 | LOCAL FUNCTION |
c906108c | 70 | |
c5aa993b | 71 | solib_map_sections -- open bfd and build sections for shared lib |
c906108c | 72 | |
c5aa993b | 73 | SYNOPSIS |
c906108c | 74 | |
c5aa993b | 75 | static int solib_map_sections (struct so_list *so) |
c906108c | 76 | |
c5aa993b | 77 | DESCRIPTION |
c906108c | 78 | |
c5aa993b JM |
79 | Given a pointer to one of the shared objects in our list |
80 | of mapped objects, use the recorded name to open a bfd | |
81 | descriptor for the object, build a section table, and then | |
82 | relocate all the section addresses by the base address at | |
83 | which the shared object was mapped. | |
c906108c | 84 | |
c5aa993b | 85 | FIXMES |
c906108c | 86 | |
c5aa993b JM |
87 | In most (all?) cases the shared object file name recorded in the |
88 | dynamic linkage tables will be a fully qualified pathname. For | |
89 | cases where it isn't, do we really mimic the systems search | |
90 | mechanism correctly in the below code (particularly the tilde | |
91 | expansion stuff?). | |
c906108c SS |
92 | */ |
93 | ||
94 | static int | |
fba45db2 | 95 | solib_map_sections (PTR arg) |
c906108c SS |
96 | { |
97 | struct so_list *so = (struct so_list *) arg; /* catch_errors bogon */ | |
98 | char *filename; | |
99 | char *scratch_pathname; | |
100 | int scratch_chan; | |
101 | struct section_table *p; | |
102 | struct cleanup *old_chain; | |
103 | bfd *abfd; | |
c5aa993b JM |
104 | |
105 | filename = tilde_expand (so->so_name); | |
106 | ||
c906108c SS |
107 | if (solib_absolute_prefix && ROOTED_P (filename)) |
108 | /* Prefix shared libraries with absolute filenames with | |
109 | SOLIB_ABSOLUTE_PREFIX. */ | |
110 | { | |
111 | char *pfxed_fn; | |
112 | int pfx_len; | |
113 | ||
114 | pfx_len = strlen (solib_absolute_prefix); | |
115 | ||
116 | /* Remove trailing slashes. */ | |
117 | while (pfx_len > 0 && SLASH_P (solib_absolute_prefix[pfx_len - 1])) | |
118 | pfx_len--; | |
119 | ||
120 | pfxed_fn = xmalloc (pfx_len + strlen (filename) + 1); | |
121 | strcpy (pfxed_fn, solib_absolute_prefix); | |
122 | strcat (pfxed_fn, filename); | |
123 | free (filename); | |
124 | ||
125 | filename = pfxed_fn; | |
126 | } | |
127 | ||
128 | old_chain = make_cleanup (free, filename); | |
129 | ||
130 | scratch_chan = -1; | |
131 | ||
132 | if (solib_search_path) | |
133 | scratch_chan = openp (solib_search_path, | |
134 | 1, filename, O_RDONLY, 0, &scratch_pathname); | |
135 | if (scratch_chan < 0) | |
c5aa993b | 136 | scratch_chan = openp (get_in_environ (inferior_environ, "PATH"), |
c906108c SS |
137 | 1, filename, O_RDONLY, 0, &scratch_pathname); |
138 | if (scratch_chan < 0) | |
139 | { | |
c5aa993b JM |
140 | scratch_chan = openp (get_in_environ |
141 | (inferior_environ, "LD_LIBRARY_PATH"), | |
c906108c SS |
142 | 1, filename, O_RDONLY, 0, &scratch_pathname); |
143 | } | |
144 | if (scratch_chan < 0) | |
145 | { | |
13437d4b KB |
146 | perror_with_name (filename); |
147 | } | |
148 | /* Leave scratch_pathname allocated. abfd->name will point to it. */ | |
104c1213 | 149 | |
13437d4b KB |
150 | abfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan); |
151 | if (!abfd) | |
23e04971 | 152 | { |
13437d4b KB |
153 | close (scratch_chan); |
154 | error ("Could not open `%s' as an executable file: %s", | |
155 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
156 | } | |
157 | /* Leave bfd open, core_xfer_memory and "info files" need it. */ | |
158 | so->abfd = abfd; | |
159 | abfd->cacheable = true; | |
23e04971 | 160 | |
13437d4b KB |
161 | /* copy full path name into so_name, so that later symbol_file_add can find |
162 | it */ | |
163 | if (strlen (scratch_pathname) >= SO_NAME_MAX_PATH_SIZE) | |
164 | error ("Full path name length of shared library exceeds SO_NAME_MAX_PATH_SIZE in so_list structure."); | |
165 | strcpy (so->so_name, scratch_pathname); | |
23e04971 | 166 | |
13437d4b KB |
167 | if (!bfd_check_format (abfd, bfd_object)) |
168 | { | |
169 | error ("\"%s\": not in executable format: %s.", | |
170 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
23e04971 | 171 | } |
13437d4b | 172 | if (build_section_table (abfd, &so->sections, &so->sections_end)) |
23e04971 | 173 | { |
13437d4b KB |
174 | error ("Can't find the file sections in `%s': %s", |
175 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
23e04971 | 176 | } |
104c1213 | 177 | |
13437d4b | 178 | for (p = so->sections; p < so->sections_end; p++) |
104c1213 | 179 | { |
13437d4b KB |
180 | /* Relocate the section binding addresses as recorded in the shared |
181 | object's file by the base address to which the object was actually | |
182 | mapped. */ | |
183 | p->addr += TARGET_SO_LM_ADDR (so); | |
184 | p->endaddr += TARGET_SO_LM_ADDR (so); | |
185 | so->lmend = max (p->endaddr, so->lmend); | |
186 | if (STREQ (p->the_bfd_section->name, ".text")) | |
187 | { | |
188 | so->textsection = p; | |
189 | } | |
104c1213 JM |
190 | } |
191 | ||
13437d4b KB |
192 | /* Free the file names, close the file now. */ |
193 | do_cleanups (old_chain); | |
104c1213 | 194 | |
13437d4b | 195 | return (1); |
104c1213 | 196 | } |
c906108c | 197 | |
07cd4b97 | 198 | /* LOCAL FUNCTION |
c906108c | 199 | |
07cd4b97 | 200 | free_so --- free a `struct so_list' object |
c906108c | 201 | |
c5aa993b | 202 | SYNOPSIS |
c906108c | 203 | |
07cd4b97 | 204 | void free_so (struct so_list *so) |
c906108c | 205 | |
c5aa993b | 206 | DESCRIPTION |
c906108c | 207 | |
07cd4b97 JB |
208 | Free the storage associated with the `struct so_list' object SO. |
209 | If we have opened a BFD for SO, close it. | |
c906108c | 210 | |
07cd4b97 JB |
211 | The caller is responsible for removing SO from whatever list it is |
212 | a member of. If we have placed SO's sections in some target's | |
213 | section table, the caller is responsible for removing them. | |
c906108c | 214 | |
07cd4b97 JB |
215 | This function doesn't mess with objfiles at all. If there is an |
216 | objfile associated with SO that needs to be removed, the caller is | |
217 | responsible for taking care of that. */ | |
218 | ||
13437d4b | 219 | void |
07cd4b97 | 220 | free_so (struct so_list *so) |
c906108c | 221 | { |
07cd4b97 | 222 | char *bfd_filename = 0; |
c5aa993b | 223 | |
07cd4b97 JB |
224 | if (so->sections) |
225 | free (so->sections); | |
226 | ||
227 | if (so->abfd) | |
c906108c | 228 | { |
07cd4b97 JB |
229 | bfd_filename = bfd_get_filename (so->abfd); |
230 | if (! bfd_close (so->abfd)) | |
231 | warning ("cannot close \"%s\": %s", | |
232 | bfd_filename, bfd_errmsg (bfd_get_error ())); | |
c906108c | 233 | } |
07cd4b97 JB |
234 | |
235 | if (bfd_filename) | |
236 | free (bfd_filename); | |
237 | ||
13437d4b | 238 | TARGET_SO_FREE_SO (so); |
07cd4b97 | 239 | |
13437d4b | 240 | free (so); |
c906108c SS |
241 | } |
242 | ||
07cd4b97 | 243 | |
c906108c SS |
244 | /* A small stub to get us past the arg-passing pinhole of catch_errors. */ |
245 | ||
246 | static int | |
fba45db2 | 247 | symbol_add_stub (PTR arg) |
c906108c | 248 | { |
07cd4b97 | 249 | register struct so_list *so = (struct so_list *) arg; /* catch_errs bogon */ |
62557bbc | 250 | struct section_addr_info *sap; |
9e124216 EZ |
251 | CORE_ADDR lowest_addr = 0; |
252 | int lowest_index; | |
253 | asection *lowest_sect = NULL; | |
c906108c | 254 | |
07cd4b97 JB |
255 | /* Have we already loaded this shared object? */ |
256 | ALL_OBJFILES (so->objfile) | |
257 | { | |
258 | if (strcmp (so->objfile->name, so->so_name) == 0) | |
259 | return 1; | |
260 | } | |
261 | ||
262 | /* Find the shared object's text segment. */ | |
c5aa993b | 263 | if (so->textsection) |
9e124216 EZ |
264 | { |
265 | lowest_addr = so->textsection->addr; | |
266 | lowest_sect = bfd_get_section_by_name (so->abfd, ".text"); | |
267 | lowest_index = lowest_sect->index; | |
268 | } | |
c5aa993b | 269 | else if (so->abfd != NULL) |
c906108c | 270 | { |
9e124216 EZ |
271 | /* If we didn't find a mapped non zero sized .text section, set |
272 | up lowest_addr so that the relocation in symbol_file_add does | |
273 | no harm. */ | |
c5aa993b | 274 | lowest_sect = bfd_get_section_by_name (so->abfd, ".text"); |
c906108c | 275 | if (lowest_sect == NULL) |
c5aa993b | 276 | bfd_map_over_sections (so->abfd, find_lowest_section, |
96baa820 | 277 | (PTR) &lowest_sect); |
c906108c | 278 | if (lowest_sect) |
9e124216 EZ |
279 | { |
280 | lowest_addr = bfd_section_vma (so->abfd, lowest_sect) | |
13437d4b | 281 | + TARGET_SO_LM_ADDR (so); |
9e124216 EZ |
282 | lowest_index = lowest_sect->index; |
283 | } | |
c906108c | 284 | } |
c5aa993b | 285 | |
62557bbc KB |
286 | sap = build_section_addr_info_from_section_table (so->sections, |
287 | so->sections_end); | |
e7cf9df1 | 288 | |
9e124216 EZ |
289 | sap->other[lowest_index].addr = lowest_addr; |
290 | ||
62557bbc KB |
291 | so->objfile = symbol_file_add (so->so_name, so->from_tty, |
292 | sap, 0, OBJF_SHARED); | |
293 | free_section_addr_info (sap); | |
c906108c | 294 | |
07cd4b97 | 295 | return (1); |
c906108c SS |
296 | } |
297 | ||
c906108c | 298 | |
07cd4b97 | 299 | /* LOCAL FUNCTION |
c906108c | 300 | |
105b175f | 301 | update_solib_list --- synchronize GDB's shared object list with inferior's |
c906108c | 302 | |
c5aa993b | 303 | SYNOPSIS |
c906108c | 304 | |
105b175f | 305 | void update_solib_list (int from_tty, struct target_ops *TARGET) |
c906108c | 306 | |
07cd4b97 | 307 | Extract the list of currently loaded shared objects from the |
105b175f JB |
308 | inferior, and compare it with the list of shared objects currently |
309 | in GDB's so_list_head list. Edit so_list_head to bring it in sync | |
310 | with the inferior's new list. | |
c906108c | 311 | |
105b175f JB |
312 | If we notice that the inferior has unloaded some shared objects, |
313 | free any symbolic info GDB had read about those shared objects. | |
314 | ||
315 | Don't load symbolic info for any new shared objects; just add them | |
316 | to the list, and leave their symbols_loaded flag clear. | |
07cd4b97 JB |
317 | |
318 | If FROM_TTY is non-null, feel free to print messages about what | |
319 | we're doing. | |
c906108c | 320 | |
07cd4b97 JB |
321 | If TARGET is non-null, add the sections of all new shared objects |
322 | to TARGET's section table. Note that this doesn't remove any | |
323 | sections for shared objects that have been unloaded, and it | |
324 | doesn't check to see if the new shared objects are already present in | |
325 | the section table. But we only use this for core files and | |
326 | processes we've just attached to, so that's okay. */ | |
c906108c | 327 | |
07cd4b97 | 328 | void |
105b175f | 329 | update_solib_list (int from_tty, struct target_ops *target) |
07cd4b97 | 330 | { |
13437d4b | 331 | struct so_list *inferior = TARGET_SO_CURRENT_SOS (); |
07cd4b97 JB |
332 | struct so_list *gdb, **gdb_link; |
333 | ||
104c1213 JM |
334 | /* If we are attaching to a running process for which we |
335 | have not opened a symbol file, we may be able to get its | |
336 | symbols now! */ | |
337 | if (attach_flag && | |
338 | symfile_objfile == NULL) | |
13437d4b | 339 | catch_errors (TARGET_SO_OPEN_SYMBOL_FILE_OBJECT, (PTR) &from_tty, |
104c1213 JM |
340 | "Error reading attached process's symbol file.\n", |
341 | RETURN_MASK_ALL); | |
342 | ||
07cd4b97 JB |
343 | /* Since this function might actually add some elements to the |
344 | so_list_head list, arrange for it to be cleaned up when | |
345 | appropriate. */ | |
346 | if (!solib_cleanup_queued) | |
347 | { | |
348 | make_run_cleanup (do_clear_solib, NULL); | |
349 | solib_cleanup_queued = 1; | |
c906108c | 350 | } |
c5aa993b | 351 | |
07cd4b97 JB |
352 | /* GDB and the inferior's dynamic linker each maintain their own |
353 | list of currently loaded shared objects; we want to bring the | |
354 | former in sync with the latter. Scan both lists, seeing which | |
355 | shared objects appear where. There are three cases: | |
356 | ||
357 | - A shared object appears on both lists. This means that GDB | |
105b175f JB |
358 | knows about it already, and it's still loaded in the inferior. |
359 | Nothing needs to happen. | |
07cd4b97 JB |
360 | |
361 | - A shared object appears only on GDB's list. This means that | |
105b175f JB |
362 | the inferior has unloaded it. We should remove the shared |
363 | object from GDB's tables. | |
07cd4b97 JB |
364 | |
365 | - A shared object appears only on the inferior's list. This | |
105b175f JB |
366 | means that it's just been loaded. We should add it to GDB's |
367 | tables. | |
07cd4b97 JB |
368 | |
369 | So we walk GDB's list, checking each entry to see if it appears | |
370 | in the inferior's list too. If it does, no action is needed, and | |
371 | we remove it from the inferior's list. If it doesn't, the | |
372 | inferior has unloaded it, and we remove it from GDB's list. By | |
373 | the time we're done walking GDB's list, the inferior's list | |
374 | contains only the new shared objects, which we then add. */ | |
375 | ||
376 | gdb = so_list_head; | |
377 | gdb_link = &so_list_head; | |
378 | while (gdb) | |
c906108c | 379 | { |
07cd4b97 JB |
380 | struct so_list *i = inferior; |
381 | struct so_list **i_link = &inferior; | |
382 | ||
383 | /* Check to see whether the shared object *gdb also appears in | |
384 | the inferior's current list. */ | |
385 | while (i) | |
c906108c | 386 | { |
07cd4b97 JB |
387 | if (! strcmp (gdb->so_original_name, i->so_original_name)) |
388 | break; | |
389 | ||
390 | i_link = &i->next; | |
391 | i = *i_link; | |
c906108c | 392 | } |
c5aa993b | 393 | |
07cd4b97 JB |
394 | /* If the shared object appears on the inferior's list too, then |
395 | it's still loaded, so we don't need to do anything. Delete | |
396 | it from the inferior's list, and leave it on GDB's list. */ | |
397 | if (i) | |
c906108c | 398 | { |
07cd4b97 | 399 | *i_link = i->next; |
07cd4b97 JB |
400 | free_so (i); |
401 | gdb_link = &gdb->next; | |
402 | gdb = *gdb_link; | |
403 | } | |
404 | ||
405 | /* If it's not on the inferior's list, remove it from GDB's tables. */ | |
406 | else | |
407 | { | |
408 | *gdb_link = gdb->next; | |
07cd4b97 JB |
409 | |
410 | /* Unless the user loaded it explicitly, free SO's objfile. */ | |
e8930304 | 411 | if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED)) |
07cd4b97 JB |
412 | free_objfile (gdb->objfile); |
413 | ||
414 | /* Some targets' section tables might be referring to | |
415 | sections from so->abfd; remove them. */ | |
416 | remove_target_sections (gdb->abfd); | |
417 | ||
418 | free_so (gdb); | |
419 | gdb = *gdb_link; | |
c906108c SS |
420 | } |
421 | } | |
c5aa993b | 422 | |
07cd4b97 JB |
423 | /* Now the inferior's list contains only shared objects that don't |
424 | appear in GDB's list --- those that are newly loaded. Add them | |
e8930304 | 425 | to GDB's shared object list. */ |
07cd4b97 | 426 | if (inferior) |
c906108c | 427 | { |
07cd4b97 JB |
428 | struct so_list *i; |
429 | ||
430 | /* Add the new shared objects to GDB's list. */ | |
431 | *gdb_link = inferior; | |
432 | ||
e8930304 | 433 | /* Fill in the rest of each of the `struct so_list' nodes. */ |
07cd4b97 | 434 | for (i = inferior; i; i = i->next) |
c906108c | 435 | { |
07cd4b97 JB |
436 | i->from_tty = from_tty; |
437 | ||
438 | /* Fill in the rest of the `struct so_list' node. */ | |
439 | catch_errors (solib_map_sections, i, | |
440 | "Error while mapping shared library sections:\n", | |
441 | RETURN_MASK_ALL); | |
07cd4b97 JB |
442 | } |
443 | ||
444 | /* If requested, add the shared objects' sections to the the | |
445 | TARGET's section table. */ | |
446 | if (target) | |
447 | { | |
448 | int new_sections; | |
449 | ||
450 | /* Figure out how many sections we'll need to add in total. */ | |
451 | new_sections = 0; | |
452 | for (i = inferior; i; i = i->next) | |
453 | new_sections += (i->sections_end - i->sections); | |
454 | ||
455 | if (new_sections > 0) | |
c906108c | 456 | { |
07cd4b97 JB |
457 | int space = target_resize_to_sections (target, new_sections); |
458 | ||
459 | for (i = inferior; i; i = i->next) | |
460 | { | |
461 | int count = (i->sections_end - i->sections); | |
462 | memcpy (target->to_sections + space, | |
463 | i->sections, | |
464 | count * sizeof (i->sections[0])); | |
465 | space += count; | |
466 | } | |
c906108c SS |
467 | } |
468 | } | |
e8930304 | 469 | } |
105b175f JB |
470 | } |
471 | ||
472 | ||
473 | /* GLOBAL FUNCTION | |
474 | ||
475 | solib_add -- read in symbol info for newly added shared libraries | |
476 | ||
477 | SYNOPSIS | |
478 | ||
479 | void solib_add (char *pattern, int from_tty, struct target_ops *TARGET) | |
480 | ||
481 | DESCRIPTION | |
482 | ||
483 | Read in symbolic information for any shared objects whose names | |
484 | match PATTERN. (If we've already read a shared object's symbol | |
485 | info, leave it alone.) If PATTERN is zero, read them all. | |
486 | ||
487 | FROM_TTY and TARGET are as described for update_solib_list, above. */ | |
488 | ||
489 | void | |
490 | solib_add (char *pattern, int from_tty, struct target_ops *target) | |
491 | { | |
492 | struct so_list *gdb; | |
493 | ||
494 | if (pattern) | |
495 | { | |
496 | char *re_err = re_comp (pattern); | |
497 | ||
498 | if (re_err) | |
499 | error ("Invalid regexp: %s", re_err); | |
500 | } | |
501 | ||
502 | update_solib_list (from_tty, target); | |
c906108c | 503 | |
105b175f JB |
504 | /* Walk the list of currently loaded shared libraries, and read |
505 | symbols for any that match the pattern --- or any whose symbols | |
506 | aren't already loaded, if no pattern was given. */ | |
e8930304 JB |
507 | { |
508 | int any_matches = 0; | |
509 | int loaded_any_symbols = 0; | |
c906108c | 510 | |
e8930304 JB |
511 | for (gdb = so_list_head; gdb; gdb = gdb->next) |
512 | if (! pattern || re_exec (gdb->so_name)) | |
513 | { | |
514 | any_matches = 1; | |
515 | ||
516 | if (gdb->symbols_loaded) | |
517 | { | |
518 | if (from_tty) | |
519 | printf_unfiltered ("Symbols already loaded for %s\n", | |
520 | gdb->so_name); | |
521 | } | |
522 | else | |
523 | { | |
524 | if (catch_errors | |
525 | (symbol_add_stub, gdb, | |
526 | "Error while reading shared library symbols:\n", | |
527 | RETURN_MASK_ALL)) | |
528 | { | |
529 | if (from_tty) | |
530 | printf_unfiltered ("Loaded symbols for %s\n", | |
531 | gdb->so_name); | |
532 | gdb->symbols_loaded = 1; | |
533 | loaded_any_symbols = 1; | |
534 | } | |
535 | } | |
536 | } | |
537 | ||
538 | if (from_tty && pattern && ! any_matches) | |
539 | printf_unfiltered | |
540 | ("No loaded shared libraries match the pattern `%s'.\n", pattern); | |
541 | ||
542 | if (loaded_any_symbols) | |
543 | { | |
544 | /* Getting new symbols may change our opinion about what is | |
545 | frameless. */ | |
546 | reinit_frame_cache (); | |
547 | ||
13437d4b | 548 | TARGET_SO_SPECIAL_SYMBOL_HANDLING (); |
e8930304 JB |
549 | } |
550 | } | |
c906108c SS |
551 | } |
552 | ||
07cd4b97 | 553 | |
c906108c SS |
554 | /* |
555 | ||
c5aa993b | 556 | LOCAL FUNCTION |
c906108c | 557 | |
c5aa993b | 558 | info_sharedlibrary_command -- code for "info sharedlibrary" |
c906108c | 559 | |
c5aa993b | 560 | SYNOPSIS |
c906108c | 561 | |
c5aa993b | 562 | static void info_sharedlibrary_command () |
c906108c | 563 | |
c5aa993b | 564 | DESCRIPTION |
c906108c | 565 | |
c5aa993b JM |
566 | Walk through the shared library list and print information |
567 | about each attached library. | |
568 | */ | |
c906108c SS |
569 | |
570 | static void | |
fba45db2 | 571 | info_sharedlibrary_command (char *ignore, int from_tty) |
c906108c | 572 | { |
c5aa993b | 573 | register struct so_list *so = NULL; /* link map state variable */ |
c906108c SS |
574 | int header_done = 0; |
575 | int addr_width; | |
576 | char *addr_fmt; | |
f5b8946c | 577 | int arch_size; |
c906108c SS |
578 | |
579 | if (exec_bfd == NULL) | |
580 | { | |
4ce44c66 | 581 | printf_unfiltered ("No executable file.\n"); |
c906108c SS |
582 | return; |
583 | } | |
584 | ||
6ceadee4 | 585 | arch_size = bfd_get_arch_size (exec_bfd); |
f5b8946c MS |
586 | /* Default to 32-bit in case of failure (non-elf). */ |
587 | if (arch_size == 32 || arch_size == -1) | |
588 | { | |
589 | addr_width = 8 + 4; | |
590 | addr_fmt = "08l"; | |
591 | } | |
592 | else if (arch_size == 64) | |
593 | { | |
594 | addr_width = 16 + 4; | |
595 | addr_fmt = "016l"; | |
596 | } | |
c906108c | 597 | |
105b175f | 598 | update_solib_list (from_tty, 0); |
07cd4b97 JB |
599 | |
600 | for (so = so_list_head; so; so = so->next) | |
c906108c | 601 | { |
c5aa993b | 602 | if (so->so_name[0]) |
c906108c SS |
603 | { |
604 | if (!header_done) | |
605 | { | |
c5aa993b JM |
606 | printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width, "From", |
607 | addr_width, "To", "Syms Read", | |
608 | "Shared Object Library"); | |
c906108c SS |
609 | header_done++; |
610 | } | |
611 | ||
612 | printf_unfiltered ("%-*s", addr_width, | |
13437d4b KB |
613 | local_hex_string_custom ( |
614 | (unsigned long) TARGET_SO_LM_ADDR (so), | |
615 | addr_fmt)); | |
c906108c | 616 | printf_unfiltered ("%-*s", addr_width, |
c5aa993b JM |
617 | local_hex_string_custom ((unsigned long) so->lmend, |
618 | addr_fmt)); | |
619 | printf_unfiltered ("%-12s", so->symbols_loaded ? "Yes" : "No"); | |
620 | printf_unfiltered ("%s\n", so->so_name); | |
c906108c SS |
621 | } |
622 | } | |
623 | if (so_list_head == NULL) | |
624 | { | |
c5aa993b | 625 | printf_unfiltered ("No shared libraries loaded at this time.\n"); |
c906108c SS |
626 | } |
627 | } | |
628 | ||
629 | /* | |
630 | ||
c5aa993b | 631 | GLOBAL FUNCTION |
c906108c | 632 | |
c5aa993b | 633 | solib_address -- check to see if an address is in a shared lib |
c906108c | 634 | |
c5aa993b | 635 | SYNOPSIS |
c906108c | 636 | |
c5aa993b | 637 | char * solib_address (CORE_ADDR address) |
c906108c | 638 | |
c5aa993b | 639 | DESCRIPTION |
c906108c | 640 | |
c5aa993b JM |
641 | Provides a hook for other gdb routines to discover whether or |
642 | not a particular address is within the mapped address space of | |
643 | a shared library. Any address between the base mapping address | |
644 | and the first address beyond the end of the last mapping, is | |
645 | considered to be within the shared library address space, for | |
646 | our purposes. | |
c906108c | 647 | |
c5aa993b JM |
648 | For example, this routine is called at one point to disable |
649 | breakpoints which are in shared libraries that are not currently | |
650 | mapped in. | |
c906108c SS |
651 | */ |
652 | ||
653 | char * | |
fba45db2 | 654 | solib_address (CORE_ADDR address) |
c906108c | 655 | { |
c5aa993b JM |
656 | register struct so_list *so = 0; /* link map state variable */ |
657 | ||
07cd4b97 | 658 | for (so = so_list_head; so; so = so->next) |
c906108c | 659 | { |
13437d4b | 660 | if (TARGET_SO_LM_ADDR (so) <= address && address < so->lmend) |
07cd4b97 | 661 | return (so->so_name); |
c906108c | 662 | } |
07cd4b97 | 663 | |
c906108c SS |
664 | return (0); |
665 | } | |
666 | ||
667 | /* Called by free_all_symtabs */ | |
668 | ||
c5aa993b | 669 | void |
fba45db2 | 670 | clear_solib (void) |
c906108c | 671 | { |
085dd6e6 JM |
672 | /* This function is expected to handle ELF shared libraries. It is |
673 | also used on Solaris, which can run either ELF or a.out binaries | |
674 | (for compatibility with SunOS 4), both of which can use shared | |
675 | libraries. So we don't know whether we have an ELF executable or | |
676 | an a.out executable until the user chooses an executable file. | |
677 | ||
678 | ELF shared libraries don't get mapped into the address space | |
679 | until after the program starts, so we'd better not try to insert | |
680 | breakpoints in them immediately. We have to wait until the | |
681 | dynamic linker has loaded them; we'll hit a bp_shlib_event | |
682 | breakpoint (look for calls to create_solib_event_breakpoint) when | |
683 | it's ready. | |
684 | ||
685 | SunOS shared libraries seem to be different --- they're present | |
686 | as soon as the process begins execution, so there's no need to | |
687 | put off inserting breakpoints. There's also nowhere to put a | |
688 | bp_shlib_event breakpoint, so if we put it off, we'll never get | |
689 | around to it. | |
690 | ||
691 | So: disable breakpoints only if we're using ELF shared libs. */ | |
692 | if (exec_bfd != NULL | |
693 | && bfd_get_flavour (exec_bfd) != bfd_target_aout_flavour) | |
694 | disable_breakpoints_in_shlibs (1); | |
695 | ||
c906108c SS |
696 | while (so_list_head) |
697 | { | |
07cd4b97 JB |
698 | struct so_list *so = so_list_head; |
699 | so_list_head = so->next; | |
700 | free_so (so); | |
c906108c | 701 | } |
07cd4b97 | 702 | |
13437d4b | 703 | TARGET_SO_CLEAR_SOLIB (); |
c906108c SS |
704 | } |
705 | ||
706 | static void | |
fba45db2 | 707 | do_clear_solib (PTR dummy) |
c906108c SS |
708 | { |
709 | solib_cleanup_queued = 0; | |
710 | clear_solib (); | |
711 | } | |
712 | ||
13437d4b | 713 | /* GLOBAL FUNCTION |
c5aa993b JM |
714 | |
715 | solib_create_inferior_hook -- shared library startup support | |
716 | ||
717 | SYNOPSIS | |
718 | ||
719 | void solib_create_inferior_hook() | |
720 | ||
721 | DESCRIPTION | |
722 | ||
723 | When gdb starts up the inferior, it nurses it along (through the | |
724 | shell) until it is ready to execute it's first instruction. At this | |
725 | point, this function gets called via expansion of the macro | |
13437d4b | 726 | SOLIB_CREATE_INFERIOR_HOOK. */ |
c5aa993b JM |
727 | |
728 | void | |
fba45db2 | 729 | solib_create_inferior_hook (void) |
c906108c | 730 | { |
13437d4b | 731 | TARGET_SO_SOLIB_CREATE_INFERIOR_HOOK (); |
c906108c SS |
732 | } |
733 | ||
734 | ||
735 | /* | |
736 | ||
c5aa993b | 737 | LOCAL FUNCTION |
c906108c | 738 | |
c5aa993b | 739 | sharedlibrary_command -- handle command to explicitly add library |
c906108c | 740 | |
c5aa993b | 741 | SYNOPSIS |
c906108c | 742 | |
c5aa993b | 743 | static void sharedlibrary_command (char *args, int from_tty) |
c906108c | 744 | |
c5aa993b | 745 | DESCRIPTION |
c906108c | 746 | |
c5aa993b | 747 | */ |
c906108c SS |
748 | |
749 | static void | |
fba45db2 | 750 | sharedlibrary_command (char *args, int from_tty) |
c906108c SS |
751 | { |
752 | dont_repeat (); | |
753 | solib_add (args, from_tty, (struct target_ops *) 0); | |
754 | } | |
755 | ||
c906108c SS |
756 | |
757 | void | |
fba45db2 | 758 | _initialize_solib (void) |
c906108c | 759 | { |
c906108c SS |
760 | add_com ("sharedlibrary", class_files, sharedlibrary_command, |
761 | "Load shared object library symbols for files matching REGEXP."); | |
c5aa993b | 762 | add_info ("sharedlibrary", info_sharedlibrary_command, |
c906108c SS |
763 | "Status of loaded shared object libraries."); |
764 | ||
765 | add_show_from_set | |
766 | (add_set_cmd ("auto-solib-add", class_support, var_zinteger, | |
767 | (char *) &auto_solib_add, | |
768 | "Set autoloading of shared library symbols.\n\ | |
769 | If nonzero, symbols from all shared object libraries will be loaded\n\ | |
770 | automatically when the inferior begins execution or when the dynamic linker\n\ | |
771 | informs gdb that a new library has been loaded. Otherwise, symbols\n\ | |
772 | must be loaded manually, using `sharedlibrary'.", | |
773 | &setlist), | |
774 | &showlist); | |
775 | ||
776 | add_show_from_set | |
777 | (add_set_cmd ("solib-absolute-prefix", class_support, var_filename, | |
778 | (char *) &solib_absolute_prefix, | |
779 | "Set prefix for loading absolute shared library symbol files.\n\ | |
780 | For other (relative) files, you can add values using `set solib-search-path'.", | |
781 | &setlist), | |
782 | &showlist); | |
783 | add_show_from_set | |
784 | (add_set_cmd ("solib-search-path", class_support, var_string, | |
785 | (char *) &solib_search_path, | |
786 | "Set the search path for loading non-absolute shared library symbol files.\n\ | |
787 | This takes precedence over the environment variables PATH and LD_LIBRARY_PATH.", | |
788 | &setlist), | |
789 | &showlist); | |
790 | ||
c906108c | 791 | } |