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 */ |
4646aa9d | 43 | #include "exec.h" |
13437d4b | 44 | #include "solist.h" |
dbda9972 | 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 | ||
c8c18e65 KW |
90 | Search algorithm: |
91 | * If there is a solib_absolute_prefix and path is absolute: | |
92 | * Search for solib_absolute_prefix/path. | |
93 | * else | |
94 | * Look for it literally (unmodified). | |
e4f7b8c8 | 95 | * Look in SOLIB_SEARCH_PATH. |
f43caff8 | 96 | * If available, use target defined search function. |
c8c18e65 KW |
97 | * If solib_absolute_prefix is NOT set, perform the following two searches: |
98 | * Look in inferior's $PATH. | |
99 | * Look in inferior's $LD_LIBRARY_PATH. | |
100 | * | |
101 | * The last check avoids doing this search when targetting remote | |
102 | * machines since solib_absolute_prefix will almost always be set. | |
e4f7b8c8 MS |
103 | |
104 | RETURNS | |
b21f0843 | 105 | |
e4f7b8c8 MS |
106 | file handle for opened solib, or -1 for failure. */ |
107 | ||
108 | int | |
109 | solib_open (char *in_pathname, char **found_pathname) | |
110 | { | |
111 | int found_file = -1; | |
112 | char *temp_pathname = NULL; | |
fe4e3eb8 | 113 | char *p = in_pathname; |
e4f7b8c8 | 114 | |
fe4e3eb8 EZ |
115 | while (*p && !IS_DIR_SEPARATOR (*p)) |
116 | p++; | |
117 | ||
118 | if (*p) | |
e4f7b8c8 | 119 | { |
fe4e3eb8 | 120 | if (! IS_ABSOLUTE_PATH (in_pathname) || solib_absolute_prefix == NULL) |
a7ec76fe KB |
121 | temp_pathname = in_pathname; |
122 | else | |
123 | { | |
b21f0843 | 124 | int prefix_len = strlen (solib_absolute_prefix); |
a7ec76fe KB |
125 | |
126 | /* Remove trailing slashes from absolute prefix. */ | |
b21f0843 | 127 | while (prefix_len > 0 |
fe4e3eb8 | 128 | && IS_DIR_SEPARATOR (solib_absolute_prefix[prefix_len - 1])) |
a7ec76fe KB |
129 | prefix_len--; |
130 | ||
131 | /* Cat the prefixed pathname together. */ | |
132 | temp_pathname = alloca (prefix_len + strlen (in_pathname) + 1); | |
133 | strncpy (temp_pathname, solib_absolute_prefix, prefix_len); | |
134 | temp_pathname[prefix_len] = '\0'; | |
135 | strcat (temp_pathname, in_pathname); | |
a7ec76fe | 136 | } |
b21f0843 | 137 | |
e4f7b8c8 MS |
138 | /* Now see if we can open it. */ |
139 | found_file = open (temp_pathname, O_RDONLY, 0); | |
140 | } | |
141 | ||
ba5f0d88 OF |
142 | /* If the search in solib_absolute_prefix failed, and the path name is |
143 | absolute at this point, make it relative. (openp will try and open the | |
144 | file according to its absolute path otherwise, which is not what we want.) | |
145 | Affects subsequent searches for this solib. */ | |
146 | if (found_file < 0 && IS_ABSOLUTE_PATH (in_pathname)) | |
147 | { | |
148 | /* First, get rid of any drive letters etc. */ | |
149 | while (!IS_DIR_SEPARATOR (*in_pathname)) | |
150 | in_pathname++; | |
151 | ||
152 | /* Next, get rid of all leading dir separators. */ | |
153 | while (IS_DIR_SEPARATOR (*in_pathname)) | |
154 | in_pathname++; | |
155 | } | |
156 | ||
c8c18e65 | 157 | /* If not found, search the solib_search_path (if any). */ |
e4f7b8c8 | 158 | if (found_file < 0 && solib_search_path != NULL) |
014d698b EZ |
159 | found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST, |
160 | in_pathname, O_RDONLY, 0, &temp_pathname); | |
ba5f0d88 OF |
161 | |
162 | /* If not found, next search the solib_search_path (if any) for the basename | |
163 | only (ignoring the path). This is to allow reading solibs from a path | |
164 | that differs from the opened path. */ | |
165 | if (found_file < 0 && solib_search_path != NULL) | |
014d698b EZ |
166 | found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST, |
167 | lbasename (in_pathname), O_RDONLY, 0, | |
ba5f0d88 | 168 | &temp_pathname); |
e4f7b8c8 | 169 | |
2610b0bf KW |
170 | /* If not found, try to use target supplied solib search method */ |
171 | if (found_file < 0 && TARGET_SO_FIND_AND_OPEN_SOLIB != NULL) | |
172 | found_file = TARGET_SO_FIND_AND_OPEN_SOLIB | |
173 | (in_pathname, O_RDONLY, &temp_pathname); | |
174 | ||
e4f7b8c8 | 175 | /* If not found, next search the inferior's $PATH environment variable. */ |
c8c18e65 | 176 | if (found_file < 0 && solib_absolute_prefix == NULL) |
e4f7b8c8 | 177 | found_file = openp (get_in_environ (inferior_environ, "PATH"), |
014d698b EZ |
178 | OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY, 0, |
179 | &temp_pathname); | |
e4f7b8c8 MS |
180 | |
181 | /* If not found, next search the inferior's $LD_LIBRARY_PATH | |
182 | environment variable. */ | |
c8c18e65 | 183 | if (found_file < 0 && solib_absolute_prefix == NULL) |
e4f7b8c8 | 184 | found_file = openp (get_in_environ (inferior_environ, "LD_LIBRARY_PATH"), |
014d698b EZ |
185 | OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY, 0, |
186 | &temp_pathname); | |
e4f7b8c8 MS |
187 | |
188 | /* Done. If not found, tough luck. Return found_file and | |
189 | (optionally) found_pathname. */ | |
a7ec76fe | 190 | if (found_pathname != NULL && temp_pathname != NULL) |
4fcf66da | 191 | *found_pathname = xstrdup (temp_pathname); |
e4f7b8c8 MS |
192 | return found_file; |
193 | } | |
194 | ||
195 | ||
c906108c SS |
196 | /* |
197 | ||
c5aa993b | 198 | LOCAL FUNCTION |
c906108c | 199 | |
c5aa993b | 200 | solib_map_sections -- open bfd and build sections for shared lib |
c906108c | 201 | |
c5aa993b | 202 | SYNOPSIS |
c906108c | 203 | |
c5aa993b | 204 | static int solib_map_sections (struct so_list *so) |
c906108c | 205 | |
c5aa993b | 206 | DESCRIPTION |
c906108c | 207 | |
c5aa993b JM |
208 | Given a pointer to one of the shared objects in our list |
209 | of mapped objects, use the recorded name to open a bfd | |
210 | descriptor for the object, build a section table, and then | |
211 | relocate all the section addresses by the base address at | |
212 | which the shared object was mapped. | |
c906108c | 213 | |
c5aa993b | 214 | FIXMES |
c906108c | 215 | |
c5aa993b JM |
216 | In most (all?) cases the shared object file name recorded in the |
217 | dynamic linkage tables will be a fully qualified pathname. For | |
218 | cases where it isn't, do we really mimic the systems search | |
219 | mechanism correctly in the below code (particularly the tilde | |
220 | expansion stuff?). | |
c906108c SS |
221 | */ |
222 | ||
223 | static int | |
4efb68b1 | 224 | solib_map_sections (void *arg) |
c906108c SS |
225 | { |
226 | struct so_list *so = (struct so_list *) arg; /* catch_errors bogon */ | |
227 | char *filename; | |
228 | char *scratch_pathname; | |
229 | int scratch_chan; | |
230 | struct section_table *p; | |
231 | struct cleanup *old_chain; | |
232 | bfd *abfd; | |
c5aa993b JM |
233 | |
234 | filename = tilde_expand (so->so_name); | |
235 | ||
b8c9b27d | 236 | old_chain = make_cleanup (xfree, filename); |
e4f7b8c8 | 237 | scratch_chan = solib_open (filename, &scratch_pathname); |
c906108c | 238 | |
c906108c SS |
239 | if (scratch_chan < 0) |
240 | { | |
13437d4b KB |
241 | perror_with_name (filename); |
242 | } | |
104c1213 | 243 | |
e4f7b8c8 | 244 | /* Leave scratch_pathname allocated. abfd->name will point to it. */ |
13437d4b KB |
245 | abfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan); |
246 | if (!abfd) | |
23e04971 | 247 | { |
13437d4b KB |
248 | close (scratch_chan); |
249 | error ("Could not open `%s' as an executable file: %s", | |
250 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
251 | } | |
e4f7b8c8 | 252 | |
13437d4b KB |
253 | /* Leave bfd open, core_xfer_memory and "info files" need it. */ |
254 | so->abfd = abfd; | |
549c1eea | 255 | bfd_set_cacheable (abfd, 1); |
23e04971 | 256 | |
e4f7b8c8 MS |
257 | /* copy full path name into so_name, so that later symbol_file_add |
258 | can find it */ | |
13437d4b KB |
259 | if (strlen (scratch_pathname) >= SO_NAME_MAX_PATH_SIZE) |
260 | error ("Full path name length of shared library exceeds SO_NAME_MAX_PATH_SIZE in so_list structure."); | |
261 | strcpy (so->so_name, scratch_pathname); | |
23e04971 | 262 | |
13437d4b KB |
263 | if (!bfd_check_format (abfd, bfd_object)) |
264 | { | |
265 | error ("\"%s\": not in executable format: %s.", | |
266 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
23e04971 | 267 | } |
13437d4b | 268 | if (build_section_table (abfd, &so->sections, &so->sections_end)) |
23e04971 | 269 | { |
13437d4b KB |
270 | error ("Can't find the file sections in `%s': %s", |
271 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
23e04971 | 272 | } |
104c1213 | 273 | |
13437d4b | 274 | for (p = so->sections; p < so->sections_end; p++) |
104c1213 | 275 | { |
13437d4b KB |
276 | /* Relocate the section binding addresses as recorded in the shared |
277 | object's file by the base address to which the object was actually | |
278 | mapped. */ | |
749499cb | 279 | TARGET_SO_RELOCATE_SECTION_ADDRESSES (so, p); |
6314a349 | 280 | if (strcmp (p->the_bfd_section->name, ".text") == 0) |
13437d4b KB |
281 | { |
282 | so->textsection = p; | |
283 | } | |
104c1213 JM |
284 | } |
285 | ||
13437d4b KB |
286 | /* Free the file names, close the file now. */ |
287 | do_cleanups (old_chain); | |
104c1213 | 288 | |
13437d4b | 289 | return (1); |
104c1213 | 290 | } |
c906108c | 291 | |
07cd4b97 | 292 | /* LOCAL FUNCTION |
c906108c | 293 | |
07cd4b97 | 294 | free_so --- free a `struct so_list' object |
c906108c | 295 | |
c5aa993b | 296 | SYNOPSIS |
c906108c | 297 | |
07cd4b97 | 298 | void free_so (struct so_list *so) |
c906108c | 299 | |
c5aa993b | 300 | DESCRIPTION |
c906108c | 301 | |
07cd4b97 JB |
302 | Free the storage associated with the `struct so_list' object SO. |
303 | If we have opened a BFD for SO, close it. | |
c906108c | 304 | |
07cd4b97 JB |
305 | The caller is responsible for removing SO from whatever list it is |
306 | a member of. If we have placed SO's sections in some target's | |
307 | section table, the caller is responsible for removing them. | |
c906108c | 308 | |
07cd4b97 JB |
309 | This function doesn't mess with objfiles at all. If there is an |
310 | objfile associated with SO that needs to be removed, the caller is | |
311 | responsible for taking care of that. */ | |
312 | ||
13437d4b | 313 | void |
07cd4b97 | 314 | free_so (struct so_list *so) |
c906108c | 315 | { |
07cd4b97 | 316 | char *bfd_filename = 0; |
c5aa993b | 317 | |
07cd4b97 | 318 | if (so->sections) |
b8c9b27d | 319 | xfree (so->sections); |
07cd4b97 JB |
320 | |
321 | if (so->abfd) | |
c906108c | 322 | { |
07cd4b97 JB |
323 | bfd_filename = bfd_get_filename (so->abfd); |
324 | if (! bfd_close (so->abfd)) | |
325 | warning ("cannot close \"%s\": %s", | |
326 | bfd_filename, bfd_errmsg (bfd_get_error ())); | |
c906108c | 327 | } |
07cd4b97 JB |
328 | |
329 | if (bfd_filename) | |
b8c9b27d | 330 | xfree (bfd_filename); |
07cd4b97 | 331 | |
13437d4b | 332 | TARGET_SO_FREE_SO (so); |
07cd4b97 | 333 | |
b8c9b27d | 334 | xfree (so); |
c906108c SS |
335 | } |
336 | ||
07cd4b97 | 337 | |
f8766ec1 KB |
338 | /* Return address of first so_list entry in master shared object list. */ |
339 | struct so_list * | |
340 | master_so_list (void) | |
341 | { | |
342 | return so_list_head; | |
343 | } | |
344 | ||
345 | ||
c906108c SS |
346 | /* A small stub to get us past the arg-passing pinhole of catch_errors. */ |
347 | ||
348 | static int | |
4efb68b1 | 349 | symbol_add_stub (void *arg) |
c906108c | 350 | { |
52f0bd74 | 351 | struct so_list *so = (struct so_list *) arg; /* catch_errs bogon */ |
62557bbc | 352 | struct section_addr_info *sap; |
c906108c | 353 | |
07cd4b97 JB |
354 | /* Have we already loaded this shared object? */ |
355 | ALL_OBJFILES (so->objfile) | |
356 | { | |
357 | if (strcmp (so->objfile->name, so->so_name) == 0) | |
358 | return 1; | |
359 | } | |
360 | ||
62557bbc KB |
361 | sap = build_section_addr_info_from_section_table (so->sections, |
362 | so->sections_end); | |
e7cf9df1 | 363 | |
62557bbc KB |
364 | so->objfile = symbol_file_add (so->so_name, so->from_tty, |
365 | sap, 0, OBJF_SHARED); | |
366 | free_section_addr_info (sap); | |
c906108c | 367 | |
07cd4b97 | 368 | return (1); |
c906108c SS |
369 | } |
370 | ||
c906108c | 371 | |
07cd4b97 | 372 | /* LOCAL FUNCTION |
c906108c | 373 | |
105b175f | 374 | update_solib_list --- synchronize GDB's shared object list with inferior's |
c906108c | 375 | |
c5aa993b | 376 | SYNOPSIS |
c906108c | 377 | |
105b175f | 378 | void update_solib_list (int from_tty, struct target_ops *TARGET) |
c906108c | 379 | |
07cd4b97 | 380 | Extract the list of currently loaded shared objects from the |
105b175f JB |
381 | inferior, and compare it with the list of shared objects currently |
382 | in GDB's so_list_head list. Edit so_list_head to bring it in sync | |
383 | with the inferior's new list. | |
c906108c | 384 | |
105b175f JB |
385 | If we notice that the inferior has unloaded some shared objects, |
386 | free any symbolic info GDB had read about those shared objects. | |
387 | ||
388 | Don't load symbolic info for any new shared objects; just add them | |
389 | to the list, and leave their symbols_loaded flag clear. | |
07cd4b97 JB |
390 | |
391 | If FROM_TTY is non-null, feel free to print messages about what | |
392 | we're doing. | |
c906108c | 393 | |
07cd4b97 JB |
394 | If TARGET is non-null, add the sections of all new shared objects |
395 | to TARGET's section table. Note that this doesn't remove any | |
396 | sections for shared objects that have been unloaded, and it | |
397 | doesn't check to see if the new shared objects are already present in | |
398 | the section table. But we only use this for core files and | |
399 | processes we've just attached to, so that's okay. */ | |
c906108c | 400 | |
a78f21af | 401 | static void |
105b175f | 402 | update_solib_list (int from_tty, struct target_ops *target) |
07cd4b97 | 403 | { |
13437d4b | 404 | struct so_list *inferior = TARGET_SO_CURRENT_SOS (); |
07cd4b97 JB |
405 | struct so_list *gdb, **gdb_link; |
406 | ||
104c1213 JM |
407 | /* If we are attaching to a running process for which we |
408 | have not opened a symbol file, we may be able to get its | |
409 | symbols now! */ | |
410 | if (attach_flag && | |
411 | symfile_objfile == NULL) | |
4efb68b1 | 412 | catch_errors (TARGET_SO_OPEN_SYMBOL_FILE_OBJECT, &from_tty, |
104c1213 JM |
413 | "Error reading attached process's symbol file.\n", |
414 | RETURN_MASK_ALL); | |
415 | ||
07cd4b97 JB |
416 | /* Since this function might actually add some elements to the |
417 | so_list_head list, arrange for it to be cleaned up when | |
418 | appropriate. */ | |
419 | if (!solib_cleanup_queued) | |
420 | { | |
421 | make_run_cleanup (do_clear_solib, NULL); | |
422 | solib_cleanup_queued = 1; | |
c906108c | 423 | } |
c5aa993b | 424 | |
07cd4b97 JB |
425 | /* GDB and the inferior's dynamic linker each maintain their own |
426 | list of currently loaded shared objects; we want to bring the | |
427 | former in sync with the latter. Scan both lists, seeing which | |
428 | shared objects appear where. There are three cases: | |
429 | ||
430 | - A shared object appears on both lists. This means that GDB | |
105b175f JB |
431 | knows about it already, and it's still loaded in the inferior. |
432 | Nothing needs to happen. | |
07cd4b97 JB |
433 | |
434 | - A shared object appears only on GDB's list. This means that | |
105b175f JB |
435 | the inferior has unloaded it. We should remove the shared |
436 | object from GDB's tables. | |
07cd4b97 JB |
437 | |
438 | - A shared object appears only on the inferior's list. This | |
105b175f JB |
439 | means that it's just been loaded. We should add it to GDB's |
440 | tables. | |
07cd4b97 JB |
441 | |
442 | So we walk GDB's list, checking each entry to see if it appears | |
443 | in the inferior's list too. If it does, no action is needed, and | |
444 | we remove it from the inferior's list. If it doesn't, the | |
445 | inferior has unloaded it, and we remove it from GDB's list. By | |
446 | the time we're done walking GDB's list, the inferior's list | |
447 | contains only the new shared objects, which we then add. */ | |
448 | ||
449 | gdb = so_list_head; | |
450 | gdb_link = &so_list_head; | |
451 | while (gdb) | |
c906108c | 452 | { |
07cd4b97 JB |
453 | struct so_list *i = inferior; |
454 | struct so_list **i_link = &inferior; | |
455 | ||
456 | /* Check to see whether the shared object *gdb also appears in | |
457 | the inferior's current list. */ | |
458 | while (i) | |
c906108c | 459 | { |
07cd4b97 JB |
460 | if (! strcmp (gdb->so_original_name, i->so_original_name)) |
461 | break; | |
462 | ||
463 | i_link = &i->next; | |
464 | i = *i_link; | |
c906108c | 465 | } |
c5aa993b | 466 | |
07cd4b97 JB |
467 | /* If the shared object appears on the inferior's list too, then |
468 | it's still loaded, so we don't need to do anything. Delete | |
469 | it from the inferior's list, and leave it on GDB's list. */ | |
470 | if (i) | |
c906108c | 471 | { |
07cd4b97 | 472 | *i_link = i->next; |
07cd4b97 JB |
473 | free_so (i); |
474 | gdb_link = &gdb->next; | |
475 | gdb = *gdb_link; | |
476 | } | |
477 | ||
478 | /* If it's not on the inferior's list, remove it from GDB's tables. */ | |
479 | else | |
480 | { | |
481 | *gdb_link = gdb->next; | |
07cd4b97 JB |
482 | |
483 | /* Unless the user loaded it explicitly, free SO's objfile. */ | |
e8930304 | 484 | if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED)) |
07cd4b97 JB |
485 | free_objfile (gdb->objfile); |
486 | ||
487 | /* Some targets' section tables might be referring to | |
488 | sections from so->abfd; remove them. */ | |
489 | remove_target_sections (gdb->abfd); | |
490 | ||
491 | free_so (gdb); | |
492 | gdb = *gdb_link; | |
c906108c SS |
493 | } |
494 | } | |
c5aa993b | 495 | |
07cd4b97 JB |
496 | /* Now the inferior's list contains only shared objects that don't |
497 | appear in GDB's list --- those that are newly loaded. Add them | |
e8930304 | 498 | to GDB's shared object list. */ |
07cd4b97 | 499 | if (inferior) |
c906108c | 500 | { |
07cd4b97 JB |
501 | struct so_list *i; |
502 | ||
503 | /* Add the new shared objects to GDB's list. */ | |
504 | *gdb_link = inferior; | |
505 | ||
e8930304 | 506 | /* Fill in the rest of each of the `struct so_list' nodes. */ |
07cd4b97 | 507 | for (i = inferior; i; i = i->next) |
c906108c | 508 | { |
07cd4b97 JB |
509 | i->from_tty = from_tty; |
510 | ||
511 | /* Fill in the rest of the `struct so_list' node. */ | |
512 | catch_errors (solib_map_sections, i, | |
513 | "Error while mapping shared library sections:\n", | |
514 | RETURN_MASK_ALL); | |
07cd4b97 | 515 | |
b41be06e ND |
516 | /* If requested, add the shared object's sections to the TARGET's |
517 | section table. Do this immediately after mapping the object so | |
518 | that later nodes in the list can query this object, as is needed | |
519 | in solib-osf.c. */ | |
520 | if (target) | |
c906108c | 521 | { |
b41be06e ND |
522 | int count = (i->sections_end - i->sections); |
523 | if (count > 0) | |
07cd4b97 | 524 | { |
b41be06e | 525 | int space = target_resize_to_sections (target, count); |
07cd4b97 JB |
526 | memcpy (target->to_sections + space, |
527 | i->sections, | |
528 | count * sizeof (i->sections[0])); | |
07cd4b97 | 529 | } |
c906108c SS |
530 | } |
531 | } | |
e8930304 | 532 | } |
105b175f JB |
533 | } |
534 | ||
535 | ||
536 | /* GLOBAL FUNCTION | |
537 | ||
538 | solib_add -- read in symbol info for newly added shared libraries | |
539 | ||
540 | SYNOPSIS | |
541 | ||
990f9fe3 FF |
542 | void solib_add (char *pattern, int from_tty, struct target_ops |
543 | *TARGET, int readsyms) | |
105b175f JB |
544 | |
545 | DESCRIPTION | |
546 | ||
547 | Read in symbolic information for any shared objects whose names | |
548 | match PATTERN. (If we've already read a shared object's symbol | |
549 | info, leave it alone.) If PATTERN is zero, read them all. | |
550 | ||
990f9fe3 FF |
551 | If READSYMS is 0, defer reading symbolic information until later |
552 | but still do any needed low level processing. | |
553 | ||
105b175f JB |
554 | FROM_TTY and TARGET are as described for update_solib_list, above. */ |
555 | ||
556 | void | |
990f9fe3 | 557 | solib_add (char *pattern, int from_tty, struct target_ops *target, int readsyms) |
105b175f JB |
558 | { |
559 | struct so_list *gdb; | |
560 | ||
561 | if (pattern) | |
562 | { | |
563 | char *re_err = re_comp (pattern); | |
564 | ||
565 | if (re_err) | |
566 | error ("Invalid regexp: %s", re_err); | |
567 | } | |
568 | ||
569 | update_solib_list (from_tty, target); | |
c906108c | 570 | |
105b175f JB |
571 | /* Walk the list of currently loaded shared libraries, and read |
572 | symbols for any that match the pattern --- or any whose symbols | |
573 | aren't already loaded, if no pattern was given. */ | |
e8930304 JB |
574 | { |
575 | int any_matches = 0; | |
576 | int loaded_any_symbols = 0; | |
c906108c | 577 | |
e8930304 JB |
578 | for (gdb = so_list_head; gdb; gdb = gdb->next) |
579 | if (! pattern || re_exec (gdb->so_name)) | |
580 | { | |
581 | any_matches = 1; | |
582 | ||
583 | if (gdb->symbols_loaded) | |
584 | { | |
585 | if (from_tty) | |
586 | printf_unfiltered ("Symbols already loaded for %s\n", | |
587 | gdb->so_name); | |
588 | } | |
990f9fe3 | 589 | else if (readsyms) |
e8930304 JB |
590 | { |
591 | if (catch_errors | |
592 | (symbol_add_stub, gdb, | |
593 | "Error while reading shared library symbols:\n", | |
594 | RETURN_MASK_ALL)) | |
595 | { | |
596 | if (from_tty) | |
597 | printf_unfiltered ("Loaded symbols for %s\n", | |
598 | gdb->so_name); | |
599 | gdb->symbols_loaded = 1; | |
600 | loaded_any_symbols = 1; | |
601 | } | |
602 | } | |
603 | } | |
604 | ||
605 | if (from_tty && pattern && ! any_matches) | |
606 | printf_unfiltered | |
607 | ("No loaded shared libraries match the pattern `%s'.\n", pattern); | |
608 | ||
609 | if (loaded_any_symbols) | |
610 | { | |
611 | /* Getting new symbols may change our opinion about what is | |
612 | frameless. */ | |
613 | reinit_frame_cache (); | |
614 | ||
13437d4b | 615 | TARGET_SO_SPECIAL_SYMBOL_HANDLING (); |
e8930304 JB |
616 | } |
617 | } | |
c906108c SS |
618 | } |
619 | ||
07cd4b97 | 620 | |
c906108c SS |
621 | /* |
622 | ||
c5aa993b | 623 | LOCAL FUNCTION |
c906108c | 624 | |
c5aa993b | 625 | info_sharedlibrary_command -- code for "info sharedlibrary" |
c906108c | 626 | |
c5aa993b | 627 | SYNOPSIS |
c906108c | 628 | |
c5aa993b | 629 | static void info_sharedlibrary_command () |
c906108c | 630 | |
c5aa993b | 631 | DESCRIPTION |
c906108c | 632 | |
c5aa993b JM |
633 | Walk through the shared library list and print information |
634 | about each attached library. | |
635 | */ | |
c906108c SS |
636 | |
637 | static void | |
fba45db2 | 638 | info_sharedlibrary_command (char *ignore, int from_tty) |
c906108c | 639 | { |
52f0bd74 | 640 | struct so_list *so = NULL; /* link map state variable */ |
c906108c SS |
641 | int header_done = 0; |
642 | int addr_width; | |
643 | char *addr_fmt; | |
644 | ||
c7cccb76 | 645 | if (TARGET_PTR_BIT == 32) |
f5b8946c MS |
646 | { |
647 | addr_width = 8 + 4; | |
648 | addr_fmt = "08l"; | |
649 | } | |
c7cccb76 | 650 | else if (TARGET_PTR_BIT == 64) |
f5b8946c MS |
651 | { |
652 | addr_width = 16 + 4; | |
653 | addr_fmt = "016l"; | |
654 | } | |
7f7e9482 AC |
655 | else |
656 | { | |
8e65ff28 | 657 | internal_error (__FILE__, __LINE__, |
c7cccb76 MS |
658 | "TARGET_PTR_BIT returned unknown size %d", |
659 | TARGET_PTR_BIT); | |
7f7e9482 | 660 | } |
c906108c | 661 | |
105b175f | 662 | update_solib_list (from_tty, 0); |
07cd4b97 JB |
663 | |
664 | for (so = so_list_head; so; so = so->next) | |
c906108c | 665 | { |
c5aa993b | 666 | if (so->so_name[0]) |
c906108c SS |
667 | { |
668 | if (!header_done) | |
669 | { | |
c5aa993b JM |
670 | printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width, "From", |
671 | addr_width, "To", "Syms Read", | |
672 | "Shared Object Library"); | |
c906108c SS |
673 | header_done++; |
674 | } | |
675 | ||
676 | printf_unfiltered ("%-*s", addr_width, | |
749499cb | 677 | so->textsection != NULL |
14a5e767 | 678 | ? local_hex_string_custom ( |
a43ad351 | 679 | (LONGEST) so->textsection->addr, |
749499cb KB |
680 | addr_fmt) |
681 | : ""); | |
c906108c | 682 | printf_unfiltered ("%-*s", addr_width, |
749499cb | 683 | so->textsection != NULL |
14a5e767 | 684 | ? local_hex_string_custom ( |
a43ad351 | 685 | (LONGEST) so->textsection->endaddr, |
749499cb KB |
686 | addr_fmt) |
687 | : ""); | |
c5aa993b JM |
688 | printf_unfiltered ("%-12s", so->symbols_loaded ? "Yes" : "No"); |
689 | printf_unfiltered ("%s\n", so->so_name); | |
c906108c SS |
690 | } |
691 | } | |
692 | if (so_list_head == NULL) | |
693 | { | |
c5aa993b | 694 | printf_unfiltered ("No shared libraries loaded at this time.\n"); |
c906108c SS |
695 | } |
696 | } | |
697 | ||
698 | /* | |
699 | ||
c5aa993b | 700 | GLOBAL FUNCTION |
c906108c | 701 | |
c5aa993b | 702 | solib_address -- check to see if an address is in a shared lib |
c906108c | 703 | |
c5aa993b | 704 | SYNOPSIS |
c906108c | 705 | |
c5aa993b | 706 | char * solib_address (CORE_ADDR address) |
c906108c | 707 | |
c5aa993b | 708 | DESCRIPTION |
c906108c | 709 | |
c5aa993b JM |
710 | Provides a hook for other gdb routines to discover whether or |
711 | not a particular address is within the mapped address space of | |
749499cb | 712 | a shared library. |
c906108c | 713 | |
c5aa993b JM |
714 | For example, this routine is called at one point to disable |
715 | breakpoints which are in shared libraries that are not currently | |
716 | mapped in. | |
c906108c SS |
717 | */ |
718 | ||
719 | char * | |
fba45db2 | 720 | solib_address (CORE_ADDR address) |
c906108c | 721 | { |
52f0bd74 | 722 | struct so_list *so = 0; /* link map state variable */ |
c5aa993b | 723 | |
07cd4b97 | 724 | for (so = so_list_head; so; so = so->next) |
c906108c | 725 | { |
749499cb KB |
726 | struct section_table *p; |
727 | ||
728 | for (p = so->sections; p < so->sections_end; p++) | |
729 | { | |
730 | if (p->addr <= address && address < p->endaddr) | |
731 | return (so->so_name); | |
732 | } | |
c906108c | 733 | } |
07cd4b97 | 734 | |
c906108c SS |
735 | return (0); |
736 | } | |
737 | ||
738 | /* Called by free_all_symtabs */ | |
739 | ||
c5aa993b | 740 | void |
fba45db2 | 741 | clear_solib (void) |
c906108c | 742 | { |
085dd6e6 JM |
743 | /* This function is expected to handle ELF shared libraries. It is |
744 | also used on Solaris, which can run either ELF or a.out binaries | |
745 | (for compatibility with SunOS 4), both of which can use shared | |
746 | libraries. So we don't know whether we have an ELF executable or | |
747 | an a.out executable until the user chooses an executable file. | |
748 | ||
749 | ELF shared libraries don't get mapped into the address space | |
750 | until after the program starts, so we'd better not try to insert | |
751 | breakpoints in them immediately. We have to wait until the | |
752 | dynamic linker has loaded them; we'll hit a bp_shlib_event | |
753 | breakpoint (look for calls to create_solib_event_breakpoint) when | |
754 | it's ready. | |
755 | ||
756 | SunOS shared libraries seem to be different --- they're present | |
757 | as soon as the process begins execution, so there's no need to | |
758 | put off inserting breakpoints. There's also nowhere to put a | |
759 | bp_shlib_event breakpoint, so if we put it off, we'll never get | |
760 | around to it. | |
761 | ||
762 | So: disable breakpoints only if we're using ELF shared libs. */ | |
763 | if (exec_bfd != NULL | |
764 | && bfd_get_flavour (exec_bfd) != bfd_target_aout_flavour) | |
765 | disable_breakpoints_in_shlibs (1); | |
766 | ||
c906108c SS |
767 | while (so_list_head) |
768 | { | |
07cd4b97 JB |
769 | struct so_list *so = so_list_head; |
770 | so_list_head = so->next; | |
2069d78d KB |
771 | if (so->abfd) |
772 | remove_target_sections (so->abfd); | |
07cd4b97 | 773 | free_so (so); |
c906108c | 774 | } |
07cd4b97 | 775 | |
13437d4b | 776 | TARGET_SO_CLEAR_SOLIB (); |
c906108c SS |
777 | } |
778 | ||
779 | static void | |
4efb68b1 | 780 | do_clear_solib (void *dummy) |
c906108c SS |
781 | { |
782 | solib_cleanup_queued = 0; | |
783 | clear_solib (); | |
784 | } | |
785 | ||
13437d4b | 786 | /* GLOBAL FUNCTION |
c5aa993b JM |
787 | |
788 | solib_create_inferior_hook -- shared library startup support | |
789 | ||
790 | SYNOPSIS | |
791 | ||
792 | void solib_create_inferior_hook() | |
793 | ||
794 | DESCRIPTION | |
795 | ||
796 | When gdb starts up the inferior, it nurses it along (through the | |
797 | shell) until it is ready to execute it's first instruction. At this | |
798 | point, this function gets called via expansion of the macro | |
13437d4b | 799 | SOLIB_CREATE_INFERIOR_HOOK. */ |
c5aa993b JM |
800 | |
801 | void | |
fba45db2 | 802 | solib_create_inferior_hook (void) |
c906108c | 803 | { |
13437d4b | 804 | TARGET_SO_SOLIB_CREATE_INFERIOR_HOOK (); |
c906108c SS |
805 | } |
806 | ||
d7fa2ae2 KB |
807 | /* GLOBAL FUNCTION |
808 | ||
809 | in_solib_dynsym_resolve_code -- check to see if an address is in | |
810 | dynamic loader's dynamic symbol | |
811 | resolution code | |
812 | ||
813 | SYNOPSIS | |
814 | ||
815 | int in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
816 | ||
817 | DESCRIPTION | |
818 | ||
819 | Determine if PC is in the dynamic linker's symbol resolution | |
820 | code. Return 1 if so, 0 otherwise. | |
821 | */ | |
822 | ||
823 | int | |
824 | in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
825 | { | |
826 | return TARGET_SO_IN_DYNSYM_RESOLVE_CODE (pc); | |
827 | } | |
c906108c SS |
828 | |
829 | /* | |
830 | ||
c5aa993b | 831 | LOCAL FUNCTION |
c906108c | 832 | |
c5aa993b | 833 | sharedlibrary_command -- handle command to explicitly add library |
c906108c | 834 | |
c5aa993b | 835 | SYNOPSIS |
c906108c | 836 | |
c5aa993b | 837 | static void sharedlibrary_command (char *args, int from_tty) |
c906108c | 838 | |
c5aa993b | 839 | DESCRIPTION |
c906108c | 840 | |
c5aa993b | 841 | */ |
c906108c SS |
842 | |
843 | static void | |
fba45db2 | 844 | sharedlibrary_command (char *args, int from_tty) |
c906108c SS |
845 | { |
846 | dont_repeat (); | |
990f9fe3 | 847 | solib_add (args, from_tty, (struct target_ops *) 0, 1); |
c906108c SS |
848 | } |
849 | ||
cb0ba49e MS |
850 | /* LOCAL FUNCTION |
851 | ||
852 | no_shared_libraries -- handle command to explicitly discard symbols | |
853 | from shared libraries. | |
854 | ||
855 | DESCRIPTION | |
856 | ||
857 | Implements the command "nosharedlibrary", which discards symbols | |
858 | that have been auto-loaded from shared libraries. Symbols from | |
859 | shared libraries that were added by explicit request of the user | |
860 | are not discarded. Also called from remote.c. */ | |
861 | ||
c60a7562 MS |
862 | void |
863 | no_shared_libraries (char *ignored, int from_tty) | |
864 | { | |
865 | objfile_purge_solibs (); | |
866 | do_clear_solib (NULL); | |
867 | } | |
c906108c | 868 | |
cf466558 KB |
869 | static void |
870 | reload_shared_libraries (char *ignored, int from_tty) | |
871 | { | |
872 | no_shared_libraries (NULL, from_tty); | |
873 | solib_add (NULL, from_tty, NULL, auto_solib_add); | |
874 | } | |
875 | ||
a78f21af AC |
876 | extern initialize_file_ftype _initialize_solib; /* -Wmissing-prototypes */ |
877 | ||
c906108c | 878 | void |
fba45db2 | 879 | _initialize_solib (void) |
c906108c | 880 | { |
fa58ee11 EZ |
881 | struct cmd_list_element *c; |
882 | ||
c906108c SS |
883 | add_com ("sharedlibrary", class_files, sharedlibrary_command, |
884 | "Load shared object library symbols for files matching REGEXP."); | |
c5aa993b | 885 | add_info ("sharedlibrary", info_sharedlibrary_command, |
c906108c | 886 | "Status of loaded shared object libraries."); |
c60a7562 | 887 | add_com ("nosharedlibrary", class_files, no_shared_libraries, |
e89a4777 | 888 | "Unload all shared object library symbols."); |
c906108c | 889 | |
cb1a6d5f | 890 | deprecated_add_show_from_set |
b7209cb4 | 891 | (add_set_cmd ("auto-solib-add", class_support, var_boolean, |
c906108c SS |
892 | (char *) &auto_solib_add, |
893 | "Set autoloading of shared library symbols.\n\ | |
b7209cb4 FF |
894 | If \"on\", symbols from all shared object libraries will be loaded\n\ |
895 | automatically when the inferior begins execution, when the dynamic linker\n\ | |
896 | informs gdb that a new library has been loaded, or when attaching to the\n\ | |
897 | inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'.", | |
c906108c SS |
898 | &setlist), |
899 | &showlist); | |
900 | ||
fa58ee11 EZ |
901 | c = add_set_cmd ("solib-absolute-prefix", class_support, var_filename, |
902 | (char *) &solib_absolute_prefix, | |
903 | "Set prefix for loading absolute shared library symbol files.\n\ | |
c906108c | 904 | For other (relative) files, you can add values using `set solib-search-path'.", |
fa58ee11 | 905 | &setlist); |
cb1a6d5f | 906 | deprecated_add_show_from_set (c, &showlist); |
cf466558 | 907 | set_cmd_cfunc (c, reload_shared_libraries); |
5ba2abeb | 908 | set_cmd_completer (c, filename_completer); |
c906108c | 909 | |
030292b7 DJ |
910 | /* Set the default value of "solib-absolute-prefix" from the sysroot, if |
911 | one is set. */ | |
912 | solib_absolute_prefix = xstrdup (gdb_sysroot); | |
913 | ||
fa58ee11 EZ |
914 | c = add_set_cmd ("solib-search-path", class_support, var_string, |
915 | (char *) &solib_search_path, | |
916 | "Set the search path for loading non-absolute shared library symbol files.\n\ | |
917 | This takes precedence over the environment variables PATH and LD_LIBRARY_PATH.", | |
918 | &setlist); | |
cb1a6d5f | 919 | deprecated_add_show_from_set (c, &showlist); |
cf466558 | 920 | set_cmd_cfunc (c, reload_shared_libraries); |
5ba2abeb | 921 | set_cmd_completer (c, filename_completer); |
c906108c | 922 | } |