Commit | Line | Data |
---|---|---|
13437d4b | 1 | /* Handle shared libraries for GDB, the GNU Debugger. |
14a5e767 AC |
2 | |
3 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, | |
030292b7 | 4 | 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c | 22 | |
c906108c SS |
23 | #include "defs.h" |
24 | ||
c906108c | 25 | #include <sys/types.h> |
c906108c | 26 | #include <fcntl.h> |
13437d4b | 27 | #include "gdb_string.h" |
c906108c SS |
28 | #include "symtab.h" |
29 | #include "bfd.h" | |
30 | #include "symfile.h" | |
31 | #include "objfiles.h" | |
32 | #include "gdbcore.h" | |
33 | #include "command.h" | |
34 | #include "target.h" | |
35 | #include "frame.h" | |
88987551 | 36 | #include "gdb_regex.h" |
c906108c SS |
37 | #include "inferior.h" |
38 | #include "environ.h" | |
39 | #include "language.h" | |
40 | #include "gdbcmd.h" | |
fa58ee11 | 41 | #include "completer.h" |
fe4e3eb8 | 42 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 43 | |
13437d4b | 44 | #include "solist.h" |
38017ce8 | 45 | #include <readline/readline.h> |
c906108c | 46 | |
13437d4b | 47 | /* external data declarations */ |
c906108c | 48 | |
13437d4b KB |
49 | /* FIXME: gdbarch needs to control this variable */ |
50 | struct target_so_ops *current_target_so_ops; | |
23e04971 MS |
51 | |
52 | /* local data declarations */ | |
07cd4b97 | 53 | |
c906108c | 54 | static struct so_list *so_list_head; /* List of known shared objects */ |
23e04971 | 55 | |
c5aa993b | 56 | static int solib_cleanup_queued = 0; /* make_run_cleanup called */ |
c906108c | 57 | |
c906108c SS |
58 | /* Local function prototypes */ |
59 | ||
4efb68b1 | 60 | static void do_clear_solib (void *); |
c906108c | 61 | |
c906108c SS |
62 | /* If non-zero, this is a prefix that will be added to the front of the name |
63 | shared libraries with an absolute filename for loading. */ | |
64 | static char *solib_absolute_prefix = NULL; | |
65 | ||
66 | /* If non-empty, this is a search path for loading non-absolute shared library | |
67 | symbol files. This takes precedence over the environment variables PATH | |
68 | and LD_LIBRARY_PATH. */ | |
69 | static char *solib_search_path = NULL; | |
70 | ||
e4f7b8c8 MS |
71 | /* |
72 | ||
73 | GLOBAL FUNCTION | |
74 | ||
75 | solib_open -- Find a shared library file and open it. | |
76 | ||
77 | SYNOPSIS | |
78 | ||
79 | int solib_open (char *in_patname, char **found_pathname); | |
80 | ||
81 | DESCRIPTION | |
82 | ||
83 | Global variable SOLIB_ABSOLUTE_PREFIX is used as a prefix directory | |
84 | to search for shared libraries if they have an absolute path. | |
85 | ||
86 | Global variable SOLIB_SEARCH_PATH is used as a prefix directory | |
87 | (or set of directories, as in LD_LIBRARY_PATH) to search for all | |
88 | shared libraries if not found in SOLIB_ABSOLUTE_PREFIX. | |
89 | ||
90 | Search order: | |
91 | * If path is absolute, look in SOLIB_ABSOLUTE_PREFIX. | |
b21f0843 | 92 | * If path is absolute or relative, look for it literally (unmodified). |
e4f7b8c8 | 93 | * Look in SOLIB_SEARCH_PATH. |
f43caff8 | 94 | * If available, use target defined search function. |
e4f7b8c8 MS |
95 | * Look in inferior's $PATH. |
96 | * Look in inferior's $LD_LIBRARY_PATH. | |
97 | ||
98 | RETURNS | |
b21f0843 | 99 | |
e4f7b8c8 MS |
100 | file handle for opened solib, or -1 for failure. */ |
101 | ||
102 | int | |
103 | solib_open (char *in_pathname, char **found_pathname) | |
104 | { | |
105 | int found_file = -1; | |
106 | char *temp_pathname = NULL; | |
fe4e3eb8 | 107 | char *p = in_pathname; |
e4f7b8c8 | 108 | |
fe4e3eb8 EZ |
109 | while (*p && !IS_DIR_SEPARATOR (*p)) |
110 | p++; | |
111 | ||
112 | if (*p) | |
e4f7b8c8 | 113 | { |
fe4e3eb8 | 114 | if (! IS_ABSOLUTE_PATH (in_pathname) || solib_absolute_prefix == NULL) |
a7ec76fe KB |
115 | temp_pathname = in_pathname; |
116 | else | |
117 | { | |
b21f0843 | 118 | int prefix_len = strlen (solib_absolute_prefix); |
a7ec76fe KB |
119 | |
120 | /* Remove trailing slashes from absolute prefix. */ | |
b21f0843 | 121 | while (prefix_len > 0 |
fe4e3eb8 | 122 | && IS_DIR_SEPARATOR (solib_absolute_prefix[prefix_len - 1])) |
a7ec76fe KB |
123 | prefix_len--; |
124 | ||
125 | /* Cat the prefixed pathname together. */ | |
126 | temp_pathname = alloca (prefix_len + strlen (in_pathname) + 1); | |
127 | strncpy (temp_pathname, solib_absolute_prefix, prefix_len); | |
128 | temp_pathname[prefix_len] = '\0'; | |
129 | strcat (temp_pathname, in_pathname); | |
a7ec76fe | 130 | } |
b21f0843 | 131 | |
e4f7b8c8 MS |
132 | /* Now see if we can open it. */ |
133 | found_file = open (temp_pathname, O_RDONLY, 0); | |
134 | } | |
135 | ||
ba5f0d88 OF |
136 | /* If the search in solib_absolute_prefix failed, and the path name is |
137 | absolute at this point, make it relative. (openp will try and open the | |
138 | file according to its absolute path otherwise, which is not what we want.) | |
139 | Affects subsequent searches for this solib. */ | |
140 | if (found_file < 0 && IS_ABSOLUTE_PATH (in_pathname)) | |
141 | { | |
142 | /* First, get rid of any drive letters etc. */ | |
143 | while (!IS_DIR_SEPARATOR (*in_pathname)) | |
144 | in_pathname++; | |
145 | ||
146 | /* Next, get rid of all leading dir separators. */ | |
147 | while (IS_DIR_SEPARATOR (*in_pathname)) | |
148 | in_pathname++; | |
149 | } | |
150 | ||
e4f7b8c8 MS |
151 | /* If not found, next search the solib_search_path (if any). */ |
152 | if (found_file < 0 && solib_search_path != NULL) | |
153 | found_file = openp (solib_search_path, | |
154 | 1, in_pathname, O_RDONLY, 0, &temp_pathname); | |
ba5f0d88 OF |
155 | |
156 | /* If not found, next search the solib_search_path (if any) for the basename | |
157 | only (ignoring the path). This is to allow reading solibs from a path | |
158 | that differs from the opened path. */ | |
159 | if (found_file < 0 && solib_search_path != NULL) | |
160 | found_file = openp (solib_search_path, | |
161 | 1, lbasename (in_pathname), O_RDONLY, 0, | |
162 | &temp_pathname); | |
e4f7b8c8 | 163 | |
2610b0bf KW |
164 | /* If not found, try to use target supplied solib search method */ |
165 | if (found_file < 0 && TARGET_SO_FIND_AND_OPEN_SOLIB != NULL) | |
166 | found_file = TARGET_SO_FIND_AND_OPEN_SOLIB | |
167 | (in_pathname, O_RDONLY, &temp_pathname); | |
168 | ||
e4f7b8c8 MS |
169 | /* If not found, next search the inferior's $PATH environment variable. */ |
170 | if (found_file < 0 && solib_search_path != NULL) | |
171 | found_file = openp (get_in_environ (inferior_environ, "PATH"), | |
172 | 1, in_pathname, O_RDONLY, 0, &temp_pathname); | |
173 | ||
174 | /* If not found, next search the inferior's $LD_LIBRARY_PATH | |
175 | environment variable. */ | |
176 | if (found_file < 0 && solib_search_path != NULL) | |
177 | found_file = openp (get_in_environ (inferior_environ, "LD_LIBRARY_PATH"), | |
178 | 1, in_pathname, O_RDONLY, 0, &temp_pathname); | |
179 | ||
180 | /* Done. If not found, tough luck. Return found_file and | |
181 | (optionally) found_pathname. */ | |
a7ec76fe | 182 | if (found_pathname != NULL && temp_pathname != NULL) |
4fcf66da | 183 | *found_pathname = xstrdup (temp_pathname); |
e4f7b8c8 MS |
184 | return found_file; |
185 | } | |
186 | ||
187 | ||
c906108c SS |
188 | /* |
189 | ||
c5aa993b | 190 | LOCAL FUNCTION |
c906108c | 191 | |
c5aa993b | 192 | solib_map_sections -- open bfd and build sections for shared lib |
c906108c | 193 | |
c5aa993b | 194 | SYNOPSIS |
c906108c | 195 | |
c5aa993b | 196 | static int solib_map_sections (struct so_list *so) |
c906108c | 197 | |
c5aa993b | 198 | DESCRIPTION |
c906108c | 199 | |
c5aa993b JM |
200 | Given a pointer to one of the shared objects in our list |
201 | of mapped objects, use the recorded name to open a bfd | |
202 | descriptor for the object, build a section table, and then | |
203 | relocate all the section addresses by the base address at | |
204 | which the shared object was mapped. | |
c906108c | 205 | |
c5aa993b | 206 | FIXMES |
c906108c | 207 | |
c5aa993b JM |
208 | In most (all?) cases the shared object file name recorded in the |
209 | dynamic linkage tables will be a fully qualified pathname. For | |
210 | cases where it isn't, do we really mimic the systems search | |
211 | mechanism correctly in the below code (particularly the tilde | |
212 | expansion stuff?). | |
c906108c SS |
213 | */ |
214 | ||
215 | static int | |
4efb68b1 | 216 | solib_map_sections (void *arg) |
c906108c SS |
217 | { |
218 | struct so_list *so = (struct so_list *) arg; /* catch_errors bogon */ | |
219 | char *filename; | |
220 | char *scratch_pathname; | |
221 | int scratch_chan; | |
222 | struct section_table *p; | |
223 | struct cleanup *old_chain; | |
224 | bfd *abfd; | |
c5aa993b JM |
225 | |
226 | filename = tilde_expand (so->so_name); | |
227 | ||
b8c9b27d | 228 | old_chain = make_cleanup (xfree, filename); |
e4f7b8c8 | 229 | scratch_chan = solib_open (filename, &scratch_pathname); |
c906108c | 230 | |
c906108c SS |
231 | if (scratch_chan < 0) |
232 | { | |
13437d4b KB |
233 | perror_with_name (filename); |
234 | } | |
104c1213 | 235 | |
e4f7b8c8 | 236 | /* Leave scratch_pathname allocated. abfd->name will point to it. */ |
13437d4b KB |
237 | abfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan); |
238 | if (!abfd) | |
23e04971 | 239 | { |
13437d4b KB |
240 | close (scratch_chan); |
241 | error ("Could not open `%s' as an executable file: %s", | |
242 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
243 | } | |
e4f7b8c8 | 244 | |
13437d4b KB |
245 | /* Leave bfd open, core_xfer_memory and "info files" need it. */ |
246 | so->abfd = abfd; | |
81a9a963 | 247 | abfd->cacheable = 1; |
23e04971 | 248 | |
e4f7b8c8 MS |
249 | /* copy full path name into so_name, so that later symbol_file_add |
250 | can find it */ | |
13437d4b KB |
251 | if (strlen (scratch_pathname) >= SO_NAME_MAX_PATH_SIZE) |
252 | error ("Full path name length of shared library exceeds SO_NAME_MAX_PATH_SIZE in so_list structure."); | |
253 | strcpy (so->so_name, scratch_pathname); | |
23e04971 | 254 | |
13437d4b KB |
255 | if (!bfd_check_format (abfd, bfd_object)) |
256 | { | |
257 | error ("\"%s\": not in executable format: %s.", | |
258 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
23e04971 | 259 | } |
13437d4b | 260 | if (build_section_table (abfd, &so->sections, &so->sections_end)) |
23e04971 | 261 | { |
13437d4b KB |
262 | error ("Can't find the file sections in `%s': %s", |
263 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
23e04971 | 264 | } |
104c1213 | 265 | |
13437d4b | 266 | for (p = so->sections; p < so->sections_end; p++) |
104c1213 | 267 | { |
13437d4b KB |
268 | /* Relocate the section binding addresses as recorded in the shared |
269 | object's file by the base address to which the object was actually | |
270 | mapped. */ | |
749499cb | 271 | TARGET_SO_RELOCATE_SECTION_ADDRESSES (so, p); |
13437d4b KB |
272 | if (STREQ (p->the_bfd_section->name, ".text")) |
273 | { | |
274 | so->textsection = p; | |
275 | } | |
104c1213 JM |
276 | } |
277 | ||
13437d4b KB |
278 | /* Free the file names, close the file now. */ |
279 | do_cleanups (old_chain); | |
104c1213 | 280 | |
13437d4b | 281 | return (1); |
104c1213 | 282 | } |
c906108c | 283 | |
07cd4b97 | 284 | /* LOCAL FUNCTION |
c906108c | 285 | |
07cd4b97 | 286 | free_so --- free a `struct so_list' object |
c906108c | 287 | |
c5aa993b | 288 | SYNOPSIS |
c906108c | 289 | |
07cd4b97 | 290 | void free_so (struct so_list *so) |
c906108c | 291 | |
c5aa993b | 292 | DESCRIPTION |
c906108c | 293 | |
07cd4b97 JB |
294 | Free the storage associated with the `struct so_list' object SO. |
295 | If we have opened a BFD for SO, close it. | |
c906108c | 296 | |
07cd4b97 JB |
297 | The caller is responsible for removing SO from whatever list it is |
298 | a member of. If we have placed SO's sections in some target's | |
299 | section table, the caller is responsible for removing them. | |
c906108c | 300 | |
07cd4b97 JB |
301 | This function doesn't mess with objfiles at all. If there is an |
302 | objfile associated with SO that needs to be removed, the caller is | |
303 | responsible for taking care of that. */ | |
304 | ||
13437d4b | 305 | void |
07cd4b97 | 306 | free_so (struct so_list *so) |
c906108c | 307 | { |
07cd4b97 | 308 | char *bfd_filename = 0; |
c5aa993b | 309 | |
07cd4b97 | 310 | if (so->sections) |
b8c9b27d | 311 | xfree (so->sections); |
07cd4b97 JB |
312 | |
313 | if (so->abfd) | |
c906108c | 314 | { |
07cd4b97 JB |
315 | bfd_filename = bfd_get_filename (so->abfd); |
316 | if (! bfd_close (so->abfd)) | |
317 | warning ("cannot close \"%s\": %s", | |
318 | bfd_filename, bfd_errmsg (bfd_get_error ())); | |
c906108c | 319 | } |
07cd4b97 JB |
320 | |
321 | if (bfd_filename) | |
b8c9b27d | 322 | xfree (bfd_filename); |
07cd4b97 | 323 | |
13437d4b | 324 | TARGET_SO_FREE_SO (so); |
07cd4b97 | 325 | |
b8c9b27d | 326 | xfree (so); |
c906108c SS |
327 | } |
328 | ||
07cd4b97 | 329 | |
c906108c SS |
330 | /* A small stub to get us past the arg-passing pinhole of catch_errors. */ |
331 | ||
332 | static int | |
4efb68b1 | 333 | symbol_add_stub (void *arg) |
c906108c | 334 | { |
07cd4b97 | 335 | register struct so_list *so = (struct so_list *) arg; /* catch_errs bogon */ |
62557bbc | 336 | struct section_addr_info *sap; |
c906108c | 337 | |
07cd4b97 JB |
338 | /* Have we already loaded this shared object? */ |
339 | ALL_OBJFILES (so->objfile) | |
340 | { | |
341 | if (strcmp (so->objfile->name, so->so_name) == 0) | |
342 | return 1; | |
343 | } | |
344 | ||
62557bbc KB |
345 | sap = build_section_addr_info_from_section_table (so->sections, |
346 | so->sections_end); | |
e7cf9df1 | 347 | |
62557bbc KB |
348 | so->objfile = symbol_file_add (so->so_name, so->from_tty, |
349 | sap, 0, OBJF_SHARED); | |
350 | free_section_addr_info (sap); | |
c906108c | 351 | |
07cd4b97 | 352 | return (1); |
c906108c SS |
353 | } |
354 | ||
c906108c | 355 | |
07cd4b97 | 356 | /* LOCAL FUNCTION |
c906108c | 357 | |
105b175f | 358 | update_solib_list --- synchronize GDB's shared object list with inferior's |
c906108c | 359 | |
c5aa993b | 360 | SYNOPSIS |
c906108c | 361 | |
105b175f | 362 | void update_solib_list (int from_tty, struct target_ops *TARGET) |
c906108c | 363 | |
07cd4b97 | 364 | Extract the list of currently loaded shared objects from the |
105b175f JB |
365 | inferior, and compare it with the list of shared objects currently |
366 | in GDB's so_list_head list. Edit so_list_head to bring it in sync | |
367 | with the inferior's new list. | |
c906108c | 368 | |
105b175f JB |
369 | If we notice that the inferior has unloaded some shared objects, |
370 | free any symbolic info GDB had read about those shared objects. | |
371 | ||
372 | Don't load symbolic info for any new shared objects; just add them | |
373 | to the list, and leave their symbols_loaded flag clear. | |
07cd4b97 JB |
374 | |
375 | If FROM_TTY is non-null, feel free to print messages about what | |
376 | we're doing. | |
c906108c | 377 | |
07cd4b97 JB |
378 | If TARGET is non-null, add the sections of all new shared objects |
379 | to TARGET's section table. Note that this doesn't remove any | |
380 | sections for shared objects that have been unloaded, and it | |
381 | doesn't check to see if the new shared objects are already present in | |
382 | the section table. But we only use this for core files and | |
383 | processes we've just attached to, so that's okay. */ | |
c906108c | 384 | |
a78f21af | 385 | static void |
105b175f | 386 | update_solib_list (int from_tty, struct target_ops *target) |
07cd4b97 | 387 | { |
13437d4b | 388 | struct so_list *inferior = TARGET_SO_CURRENT_SOS (); |
07cd4b97 JB |
389 | struct so_list *gdb, **gdb_link; |
390 | ||
104c1213 JM |
391 | /* If we are attaching to a running process for which we |
392 | have not opened a symbol file, we may be able to get its | |
393 | symbols now! */ | |
394 | if (attach_flag && | |
395 | symfile_objfile == NULL) | |
4efb68b1 | 396 | catch_errors (TARGET_SO_OPEN_SYMBOL_FILE_OBJECT, &from_tty, |
104c1213 JM |
397 | "Error reading attached process's symbol file.\n", |
398 | RETURN_MASK_ALL); | |
399 | ||
07cd4b97 JB |
400 | /* Since this function might actually add some elements to the |
401 | so_list_head list, arrange for it to be cleaned up when | |
402 | appropriate. */ | |
403 | if (!solib_cleanup_queued) | |
404 | { | |
405 | make_run_cleanup (do_clear_solib, NULL); | |
406 | solib_cleanup_queued = 1; | |
c906108c | 407 | } |
c5aa993b | 408 | |
07cd4b97 JB |
409 | /* GDB and the inferior's dynamic linker each maintain their own |
410 | list of currently loaded shared objects; we want to bring the | |
411 | former in sync with the latter. Scan both lists, seeing which | |
412 | shared objects appear where. There are three cases: | |
413 | ||
414 | - A shared object appears on both lists. This means that GDB | |
105b175f JB |
415 | knows about it already, and it's still loaded in the inferior. |
416 | Nothing needs to happen. | |
07cd4b97 JB |
417 | |
418 | - A shared object appears only on GDB's list. This means that | |
105b175f JB |
419 | the inferior has unloaded it. We should remove the shared |
420 | object from GDB's tables. | |
07cd4b97 JB |
421 | |
422 | - A shared object appears only on the inferior's list. This | |
105b175f JB |
423 | means that it's just been loaded. We should add it to GDB's |
424 | tables. | |
07cd4b97 JB |
425 | |
426 | So we walk GDB's list, checking each entry to see if it appears | |
427 | in the inferior's list too. If it does, no action is needed, and | |
428 | we remove it from the inferior's list. If it doesn't, the | |
429 | inferior has unloaded it, and we remove it from GDB's list. By | |
430 | the time we're done walking GDB's list, the inferior's list | |
431 | contains only the new shared objects, which we then add. */ | |
432 | ||
433 | gdb = so_list_head; | |
434 | gdb_link = &so_list_head; | |
435 | while (gdb) | |
c906108c | 436 | { |
07cd4b97 JB |
437 | struct so_list *i = inferior; |
438 | struct so_list **i_link = &inferior; | |
439 | ||
440 | /* Check to see whether the shared object *gdb also appears in | |
441 | the inferior's current list. */ | |
442 | while (i) | |
c906108c | 443 | { |
07cd4b97 JB |
444 | if (! strcmp (gdb->so_original_name, i->so_original_name)) |
445 | break; | |
446 | ||
447 | i_link = &i->next; | |
448 | i = *i_link; | |
c906108c | 449 | } |
c5aa993b | 450 | |
07cd4b97 JB |
451 | /* If the shared object appears on the inferior's list too, then |
452 | it's still loaded, so we don't need to do anything. Delete | |
453 | it from the inferior's list, and leave it on GDB's list. */ | |
454 | if (i) | |
c906108c | 455 | { |
07cd4b97 | 456 | *i_link = i->next; |
07cd4b97 JB |
457 | free_so (i); |
458 | gdb_link = &gdb->next; | |
459 | gdb = *gdb_link; | |
460 | } | |
461 | ||
462 | /* If it's not on the inferior's list, remove it from GDB's tables. */ | |
463 | else | |
464 | { | |
465 | *gdb_link = gdb->next; | |
07cd4b97 JB |
466 | |
467 | /* Unless the user loaded it explicitly, free SO's objfile. */ | |
e8930304 | 468 | if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED)) |
07cd4b97 JB |
469 | free_objfile (gdb->objfile); |
470 | ||
471 | /* Some targets' section tables might be referring to | |
472 | sections from so->abfd; remove them. */ | |
473 | remove_target_sections (gdb->abfd); | |
474 | ||
475 | free_so (gdb); | |
476 | gdb = *gdb_link; | |
c906108c SS |
477 | } |
478 | } | |
c5aa993b | 479 | |
07cd4b97 JB |
480 | /* Now the inferior's list contains only shared objects that don't |
481 | appear in GDB's list --- those that are newly loaded. Add them | |
e8930304 | 482 | to GDB's shared object list. */ |
07cd4b97 | 483 | if (inferior) |
c906108c | 484 | { |
07cd4b97 JB |
485 | struct so_list *i; |
486 | ||
487 | /* Add the new shared objects to GDB's list. */ | |
488 | *gdb_link = inferior; | |
489 | ||
e8930304 | 490 | /* Fill in the rest of each of the `struct so_list' nodes. */ |
07cd4b97 | 491 | for (i = inferior; i; i = i->next) |
c906108c | 492 | { |
07cd4b97 JB |
493 | i->from_tty = from_tty; |
494 | ||
495 | /* Fill in the rest of the `struct so_list' node. */ | |
496 | catch_errors (solib_map_sections, i, | |
497 | "Error while mapping shared library sections:\n", | |
498 | RETURN_MASK_ALL); | |
07cd4b97 | 499 | |
b41be06e ND |
500 | /* If requested, add the shared object's sections to the TARGET's |
501 | section table. Do this immediately after mapping the object so | |
502 | that later nodes in the list can query this object, as is needed | |
503 | in solib-osf.c. */ | |
504 | if (target) | |
c906108c | 505 | { |
b41be06e ND |
506 | int count = (i->sections_end - i->sections); |
507 | if (count > 0) | |
07cd4b97 | 508 | { |
b41be06e | 509 | int space = target_resize_to_sections (target, count); |
07cd4b97 JB |
510 | memcpy (target->to_sections + space, |
511 | i->sections, | |
512 | count * sizeof (i->sections[0])); | |
07cd4b97 | 513 | } |
c906108c SS |
514 | } |
515 | } | |
e8930304 | 516 | } |
105b175f JB |
517 | } |
518 | ||
519 | ||
520 | /* GLOBAL FUNCTION | |
521 | ||
522 | solib_add -- read in symbol info for newly added shared libraries | |
523 | ||
524 | SYNOPSIS | |
525 | ||
990f9fe3 FF |
526 | void solib_add (char *pattern, int from_tty, struct target_ops |
527 | *TARGET, int readsyms) | |
105b175f JB |
528 | |
529 | DESCRIPTION | |
530 | ||
531 | Read in symbolic information for any shared objects whose names | |
532 | match PATTERN. (If we've already read a shared object's symbol | |
533 | info, leave it alone.) If PATTERN is zero, read them all. | |
534 | ||
990f9fe3 FF |
535 | If READSYMS is 0, defer reading symbolic information until later |
536 | but still do any needed low level processing. | |
537 | ||
105b175f JB |
538 | FROM_TTY and TARGET are as described for update_solib_list, above. */ |
539 | ||
540 | void | |
990f9fe3 | 541 | solib_add (char *pattern, int from_tty, struct target_ops *target, int readsyms) |
105b175f JB |
542 | { |
543 | struct so_list *gdb; | |
544 | ||
545 | if (pattern) | |
546 | { | |
547 | char *re_err = re_comp (pattern); | |
548 | ||
549 | if (re_err) | |
550 | error ("Invalid regexp: %s", re_err); | |
551 | } | |
552 | ||
553 | update_solib_list (from_tty, target); | |
c906108c | 554 | |
105b175f JB |
555 | /* Walk the list of currently loaded shared libraries, and read |
556 | symbols for any that match the pattern --- or any whose symbols | |
557 | aren't already loaded, if no pattern was given. */ | |
e8930304 JB |
558 | { |
559 | int any_matches = 0; | |
560 | int loaded_any_symbols = 0; | |
c906108c | 561 | |
e8930304 JB |
562 | for (gdb = so_list_head; gdb; gdb = gdb->next) |
563 | if (! pattern || re_exec (gdb->so_name)) | |
564 | { | |
565 | any_matches = 1; | |
566 | ||
567 | if (gdb->symbols_loaded) | |
568 | { | |
569 | if (from_tty) | |
570 | printf_unfiltered ("Symbols already loaded for %s\n", | |
571 | gdb->so_name); | |
572 | } | |
990f9fe3 | 573 | else if (readsyms) |
e8930304 JB |
574 | { |
575 | if (catch_errors | |
576 | (symbol_add_stub, gdb, | |
577 | "Error while reading shared library symbols:\n", | |
578 | RETURN_MASK_ALL)) | |
579 | { | |
580 | if (from_tty) | |
581 | printf_unfiltered ("Loaded symbols for %s\n", | |
582 | gdb->so_name); | |
583 | gdb->symbols_loaded = 1; | |
584 | loaded_any_symbols = 1; | |
585 | } | |
586 | } | |
587 | } | |
588 | ||
589 | if (from_tty && pattern && ! any_matches) | |
590 | printf_unfiltered | |
591 | ("No loaded shared libraries match the pattern `%s'.\n", pattern); | |
592 | ||
593 | if (loaded_any_symbols) | |
594 | { | |
595 | /* Getting new symbols may change our opinion about what is | |
596 | frameless. */ | |
597 | reinit_frame_cache (); | |
598 | ||
13437d4b | 599 | TARGET_SO_SPECIAL_SYMBOL_HANDLING (); |
e8930304 JB |
600 | } |
601 | } | |
c906108c SS |
602 | } |
603 | ||
07cd4b97 | 604 | |
c906108c SS |
605 | /* |
606 | ||
c5aa993b | 607 | LOCAL FUNCTION |
c906108c | 608 | |
c5aa993b | 609 | info_sharedlibrary_command -- code for "info sharedlibrary" |
c906108c | 610 | |
c5aa993b | 611 | SYNOPSIS |
c906108c | 612 | |
c5aa993b | 613 | static void info_sharedlibrary_command () |
c906108c | 614 | |
c5aa993b | 615 | DESCRIPTION |
c906108c | 616 | |
c5aa993b JM |
617 | Walk through the shared library list and print information |
618 | about each attached library. | |
619 | */ | |
c906108c SS |
620 | |
621 | static void | |
fba45db2 | 622 | info_sharedlibrary_command (char *ignore, int from_tty) |
c906108c | 623 | { |
c5aa993b | 624 | register struct so_list *so = NULL; /* link map state variable */ |
c906108c SS |
625 | int header_done = 0; |
626 | int addr_width; | |
627 | char *addr_fmt; | |
628 | ||
c7cccb76 | 629 | if (TARGET_PTR_BIT == 32) |
f5b8946c MS |
630 | { |
631 | addr_width = 8 + 4; | |
632 | addr_fmt = "08l"; | |
633 | } | |
c7cccb76 | 634 | else if (TARGET_PTR_BIT == 64) |
f5b8946c MS |
635 | { |
636 | addr_width = 16 + 4; | |
637 | addr_fmt = "016l"; | |
638 | } | |
7f7e9482 AC |
639 | else |
640 | { | |
8e65ff28 | 641 | internal_error (__FILE__, __LINE__, |
c7cccb76 MS |
642 | "TARGET_PTR_BIT returned unknown size %d", |
643 | TARGET_PTR_BIT); | |
7f7e9482 | 644 | } |
c906108c | 645 | |
105b175f | 646 | update_solib_list (from_tty, 0); |
07cd4b97 JB |
647 | |
648 | for (so = so_list_head; so; so = so->next) | |
c906108c | 649 | { |
c5aa993b | 650 | if (so->so_name[0]) |
c906108c SS |
651 | { |
652 | if (!header_done) | |
653 | { | |
c5aa993b JM |
654 | printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width, "From", |
655 | addr_width, "To", "Syms Read", | |
656 | "Shared Object Library"); | |
c906108c SS |
657 | header_done++; |
658 | } | |
659 | ||
660 | printf_unfiltered ("%-*s", addr_width, | |
749499cb | 661 | so->textsection != NULL |
14a5e767 | 662 | ? local_hex_string_custom ( |
a43ad351 | 663 | (LONGEST) so->textsection->addr, |
749499cb KB |
664 | addr_fmt) |
665 | : ""); | |
c906108c | 666 | printf_unfiltered ("%-*s", addr_width, |
749499cb | 667 | so->textsection != NULL |
14a5e767 | 668 | ? local_hex_string_custom ( |
a43ad351 | 669 | (LONGEST) so->textsection->endaddr, |
749499cb KB |
670 | addr_fmt) |
671 | : ""); | |
c5aa993b JM |
672 | printf_unfiltered ("%-12s", so->symbols_loaded ? "Yes" : "No"); |
673 | printf_unfiltered ("%s\n", so->so_name); | |
c906108c SS |
674 | } |
675 | } | |
676 | if (so_list_head == NULL) | |
677 | { | |
c5aa993b | 678 | printf_unfiltered ("No shared libraries loaded at this time.\n"); |
c906108c SS |
679 | } |
680 | } | |
681 | ||
682 | /* | |
683 | ||
c5aa993b | 684 | GLOBAL FUNCTION |
c906108c | 685 | |
c5aa993b | 686 | solib_address -- check to see if an address is in a shared lib |
c906108c | 687 | |
c5aa993b | 688 | SYNOPSIS |
c906108c | 689 | |
c5aa993b | 690 | char * solib_address (CORE_ADDR address) |
c906108c | 691 | |
c5aa993b | 692 | DESCRIPTION |
c906108c | 693 | |
c5aa993b JM |
694 | Provides a hook for other gdb routines to discover whether or |
695 | not a particular address is within the mapped address space of | |
749499cb | 696 | a shared library. |
c906108c | 697 | |
c5aa993b JM |
698 | For example, this routine is called at one point to disable |
699 | breakpoints which are in shared libraries that are not currently | |
700 | mapped in. | |
c906108c SS |
701 | */ |
702 | ||
703 | char * | |
fba45db2 | 704 | solib_address (CORE_ADDR address) |
c906108c | 705 | { |
c5aa993b JM |
706 | register struct so_list *so = 0; /* link map state variable */ |
707 | ||
07cd4b97 | 708 | for (so = so_list_head; so; so = so->next) |
c906108c | 709 | { |
749499cb KB |
710 | struct section_table *p; |
711 | ||
712 | for (p = so->sections; p < so->sections_end; p++) | |
713 | { | |
714 | if (p->addr <= address && address < p->endaddr) | |
715 | return (so->so_name); | |
716 | } | |
c906108c | 717 | } |
07cd4b97 | 718 | |
c906108c SS |
719 | return (0); |
720 | } | |
721 | ||
722 | /* Called by free_all_symtabs */ | |
723 | ||
c5aa993b | 724 | void |
fba45db2 | 725 | clear_solib (void) |
c906108c | 726 | { |
085dd6e6 JM |
727 | /* This function is expected to handle ELF shared libraries. It is |
728 | also used on Solaris, which can run either ELF or a.out binaries | |
729 | (for compatibility with SunOS 4), both of which can use shared | |
730 | libraries. So we don't know whether we have an ELF executable or | |
731 | an a.out executable until the user chooses an executable file. | |
732 | ||
733 | ELF shared libraries don't get mapped into the address space | |
734 | until after the program starts, so we'd better not try to insert | |
735 | breakpoints in them immediately. We have to wait until the | |
736 | dynamic linker has loaded them; we'll hit a bp_shlib_event | |
737 | breakpoint (look for calls to create_solib_event_breakpoint) when | |
738 | it's ready. | |
739 | ||
740 | SunOS shared libraries seem to be different --- they're present | |
741 | as soon as the process begins execution, so there's no need to | |
742 | put off inserting breakpoints. There's also nowhere to put a | |
743 | bp_shlib_event breakpoint, so if we put it off, we'll never get | |
744 | around to it. | |
745 | ||
746 | So: disable breakpoints only if we're using ELF shared libs. */ | |
747 | if (exec_bfd != NULL | |
748 | && bfd_get_flavour (exec_bfd) != bfd_target_aout_flavour) | |
749 | disable_breakpoints_in_shlibs (1); | |
750 | ||
c906108c SS |
751 | while (so_list_head) |
752 | { | |
07cd4b97 JB |
753 | struct so_list *so = so_list_head; |
754 | so_list_head = so->next; | |
2069d78d KB |
755 | if (so->abfd) |
756 | remove_target_sections (so->abfd); | |
07cd4b97 | 757 | free_so (so); |
c906108c | 758 | } |
07cd4b97 | 759 | |
13437d4b | 760 | TARGET_SO_CLEAR_SOLIB (); |
c906108c SS |
761 | } |
762 | ||
763 | static void | |
4efb68b1 | 764 | do_clear_solib (void *dummy) |
c906108c SS |
765 | { |
766 | solib_cleanup_queued = 0; | |
767 | clear_solib (); | |
768 | } | |
769 | ||
13437d4b | 770 | /* GLOBAL FUNCTION |
c5aa993b JM |
771 | |
772 | solib_create_inferior_hook -- shared library startup support | |
773 | ||
774 | SYNOPSIS | |
775 | ||
776 | void solib_create_inferior_hook() | |
777 | ||
778 | DESCRIPTION | |
779 | ||
780 | When gdb starts up the inferior, it nurses it along (through the | |
781 | shell) until it is ready to execute it's first instruction. At this | |
782 | point, this function gets called via expansion of the macro | |
13437d4b | 783 | SOLIB_CREATE_INFERIOR_HOOK. */ |
c5aa993b JM |
784 | |
785 | void | |
fba45db2 | 786 | solib_create_inferior_hook (void) |
c906108c | 787 | { |
13437d4b | 788 | TARGET_SO_SOLIB_CREATE_INFERIOR_HOOK (); |
c906108c SS |
789 | } |
790 | ||
d7fa2ae2 KB |
791 | /* GLOBAL FUNCTION |
792 | ||
793 | in_solib_dynsym_resolve_code -- check to see if an address is in | |
794 | dynamic loader's dynamic symbol | |
795 | resolution code | |
796 | ||
797 | SYNOPSIS | |
798 | ||
799 | int in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
800 | ||
801 | DESCRIPTION | |
802 | ||
803 | Determine if PC is in the dynamic linker's symbol resolution | |
804 | code. Return 1 if so, 0 otherwise. | |
805 | */ | |
806 | ||
807 | int | |
808 | in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
809 | { | |
810 | return TARGET_SO_IN_DYNSYM_RESOLVE_CODE (pc); | |
811 | } | |
c906108c SS |
812 | |
813 | /* | |
814 | ||
c5aa993b | 815 | LOCAL FUNCTION |
c906108c | 816 | |
c5aa993b | 817 | sharedlibrary_command -- handle command to explicitly add library |
c906108c | 818 | |
c5aa993b | 819 | SYNOPSIS |
c906108c | 820 | |
c5aa993b | 821 | static void sharedlibrary_command (char *args, int from_tty) |
c906108c | 822 | |
c5aa993b | 823 | DESCRIPTION |
c906108c | 824 | |
c5aa993b | 825 | */ |
c906108c SS |
826 | |
827 | static void | |
fba45db2 | 828 | sharedlibrary_command (char *args, int from_tty) |
c906108c SS |
829 | { |
830 | dont_repeat (); | |
990f9fe3 | 831 | solib_add (args, from_tty, (struct target_ops *) 0, 1); |
c906108c SS |
832 | } |
833 | ||
cb0ba49e MS |
834 | /* LOCAL FUNCTION |
835 | ||
836 | no_shared_libraries -- handle command to explicitly discard symbols | |
837 | from shared libraries. | |
838 | ||
839 | DESCRIPTION | |
840 | ||
841 | Implements the command "nosharedlibrary", which discards symbols | |
842 | that have been auto-loaded from shared libraries. Symbols from | |
843 | shared libraries that were added by explicit request of the user | |
844 | are not discarded. Also called from remote.c. */ | |
845 | ||
c60a7562 MS |
846 | void |
847 | no_shared_libraries (char *ignored, int from_tty) | |
848 | { | |
849 | objfile_purge_solibs (); | |
850 | do_clear_solib (NULL); | |
851 | } | |
c906108c | 852 | |
cf466558 KB |
853 | static void |
854 | reload_shared_libraries (char *ignored, int from_tty) | |
855 | { | |
856 | no_shared_libraries (NULL, from_tty); | |
857 | solib_add (NULL, from_tty, NULL, auto_solib_add); | |
858 | } | |
859 | ||
a78f21af AC |
860 | extern initialize_file_ftype _initialize_solib; /* -Wmissing-prototypes */ |
861 | ||
c906108c | 862 | void |
fba45db2 | 863 | _initialize_solib (void) |
c906108c | 864 | { |
fa58ee11 EZ |
865 | struct cmd_list_element *c; |
866 | ||
c906108c SS |
867 | add_com ("sharedlibrary", class_files, sharedlibrary_command, |
868 | "Load shared object library symbols for files matching REGEXP."); | |
c5aa993b | 869 | add_info ("sharedlibrary", info_sharedlibrary_command, |
c906108c | 870 | "Status of loaded shared object libraries."); |
c60a7562 | 871 | add_com ("nosharedlibrary", class_files, no_shared_libraries, |
e89a4777 | 872 | "Unload all shared object library symbols."); |
c906108c SS |
873 | |
874 | add_show_from_set | |
b7209cb4 | 875 | (add_set_cmd ("auto-solib-add", class_support, var_boolean, |
c906108c SS |
876 | (char *) &auto_solib_add, |
877 | "Set autoloading of shared library symbols.\n\ | |
b7209cb4 FF |
878 | If \"on\", symbols from all shared object libraries will be loaded\n\ |
879 | automatically when the inferior begins execution, when the dynamic linker\n\ | |
880 | informs gdb that a new library has been loaded, or when attaching to the\n\ | |
881 | inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'.", | |
c906108c SS |
882 | &setlist), |
883 | &showlist); | |
884 | ||
fa58ee11 EZ |
885 | c = add_set_cmd ("solib-absolute-prefix", class_support, var_filename, |
886 | (char *) &solib_absolute_prefix, | |
887 | "Set prefix for loading absolute shared library symbol files.\n\ | |
c906108c | 888 | For other (relative) files, you can add values using `set solib-search-path'.", |
fa58ee11 EZ |
889 | &setlist); |
890 | add_show_from_set (c, &showlist); | |
cf466558 | 891 | set_cmd_cfunc (c, reload_shared_libraries); |
5ba2abeb | 892 | set_cmd_completer (c, filename_completer); |
c906108c | 893 | |
030292b7 DJ |
894 | /* Set the default value of "solib-absolute-prefix" from the sysroot, if |
895 | one is set. */ | |
896 | solib_absolute_prefix = xstrdup (gdb_sysroot); | |
897 | ||
fa58ee11 EZ |
898 | c = add_set_cmd ("solib-search-path", class_support, var_string, |
899 | (char *) &solib_search_path, | |
900 | "Set the search path for loading non-absolute shared library symbol files.\n\ | |
901 | This takes precedence over the environment variables PATH and LD_LIBRARY_PATH.", | |
902 | &setlist); | |
903 | add_show_from_set (c, &showlist); | |
cf466558 | 904 | set_cmd_cfunc (c, reload_shared_libraries); |
5ba2abeb | 905 | set_cmd_completer (c, filename_completer); |
c906108c | 906 | } |