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13437d4b | 1 | /* Handle shared libraries for GDB, the GNU Debugger. |
14a5e767 | 2 | |
0b302171 | 3 | Copyright (C) 1990-2003, 2005-2012 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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 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 | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 19 | |
c906108c SS |
20 | #include "defs.h" |
21 | ||
c906108c | 22 | #include <sys/types.h> |
c906108c | 23 | #include <fcntl.h> |
13437d4b | 24 | #include "gdb_string.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "bfd.h" | |
27 | #include "symfile.h" | |
28 | #include "objfiles.h" | |
60250e8b | 29 | #include "exceptions.h" |
c906108c SS |
30 | #include "gdbcore.h" |
31 | #include "command.h" | |
32 | #include "target.h" | |
33 | #include "frame.h" | |
88987551 | 34 | #include "gdb_regex.h" |
c906108c SS |
35 | #include "inferior.h" |
36 | #include "environ.h" | |
37 | #include "language.h" | |
38 | #include "gdbcmd.h" | |
fa58ee11 | 39 | #include "completer.h" |
fe4e3eb8 | 40 | #include "filenames.h" /* for DOSish file names */ |
4646aa9d | 41 | #include "exec.h" |
13437d4b | 42 | #include "solist.h" |
84acb35a | 43 | #include "observer.h" |
dbda9972 | 44 | #include "readline/readline.h" |
f1838a98 | 45 | #include "remote.h" |
2c0b251b | 46 | #include "solib.h" |
55333a84 | 47 | #include "interps.h" |
ab38a727 | 48 | #include "filesystem.h" |
c906108c | 49 | |
66aba65d MK |
50 | /* Architecture-specific operations. */ |
51 | ||
52 | /* Per-architecture data key. */ | |
53 | static struct gdbarch_data *solib_data; | |
54 | ||
55 | static void * | |
56 | solib_init (struct obstack *obstack) | |
57 | { | |
58 | struct target_so_ops **ops; | |
59 | ||
60 | ops = OBSTACK_ZALLOC (obstack, struct target_so_ops *); | |
61 | *ops = current_target_so_ops; | |
62 | return ops; | |
63 | } | |
64 | ||
65 | static struct target_so_ops * | |
66 | solib_ops (struct gdbarch *gdbarch) | |
67 | { | |
68 | struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data); | |
433759f7 | 69 | |
66aba65d MK |
70 | return *ops; |
71 | } | |
7d522c90 DJ |
72 | |
73 | /* Set the solib operations for GDBARCH to NEW_OPS. */ | |
74 | ||
75 | void | |
76 | set_solib_ops (struct gdbarch *gdbarch, struct target_so_ops *new_ops) | |
77 | { | |
78 | struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data); | |
433759f7 | 79 | |
7d522c90 DJ |
80 | *ops = new_ops; |
81 | } | |
66aba65d MK |
82 | \f |
83 | ||
13437d4b | 84 | /* external data declarations */ |
c906108c | 85 | |
7d522c90 DJ |
86 | /* FIXME: gdbarch needs to control this variable, or else every |
87 | configuration needs to call set_solib_ops. */ | |
13437d4b | 88 | struct target_so_ops *current_target_so_ops; |
23e04971 | 89 | |
6c95b8df PA |
90 | /* List of known shared objects */ |
91 | #define so_list_head current_program_space->so_list | |
23e04971 | 92 | |
c906108c SS |
93 | /* Local function prototypes */ |
94 | ||
c906108c SS |
95 | /* If non-empty, this is a search path for loading non-absolute shared library |
96 | symbol files. This takes precedence over the environment variables PATH | |
97 | and LD_LIBRARY_PATH. */ | |
98 | static char *solib_search_path = NULL; | |
920d2a44 AC |
99 | static void |
100 | show_solib_search_path (struct ui_file *file, int from_tty, | |
101 | struct cmd_list_element *c, const char *value) | |
102 | { | |
3e43a32a MS |
103 | fprintf_filtered (file, _("The search path for loading non-absolute " |
104 | "shared library symbol files is %s.\n"), | |
920d2a44 AC |
105 | value); |
106 | } | |
c906108c | 107 | |
ab38a727 PA |
108 | /* Same as HAVE_DOS_BASED_FILE_SYSTEM, but useable as an rvalue. */ |
109 | #if (HAVE_DOS_BASED_FILE_SYSTEM) | |
110 | # define DOS_BASED_FILE_SYSTEM 1 | |
111 | #else | |
112 | # define DOS_BASED_FILE_SYSTEM 0 | |
113 | #endif | |
114 | ||
7f86f058 PA |
115 | /* Returns the full pathname of the shared library file, or NULL if |
116 | not found. (The pathname is malloc'ed; it needs to be freed by the | |
117 | caller.) *FD is set to either -1 or an open file handle for the | |
118 | library. | |
e4f7b8c8 | 119 | |
f822c95b | 120 | Global variable GDB_SYSROOT is used as a prefix directory |
e4f7b8c8 MS |
121 | to search for shared libraries if they have an absolute path. |
122 | ||
123 | Global variable SOLIB_SEARCH_PATH is used as a prefix directory | |
124 | (or set of directories, as in LD_LIBRARY_PATH) to search for all | |
f822c95b | 125 | shared libraries if not found in GDB_SYSROOT. |
e4f7b8c8 | 126 | |
c8c18e65 | 127 | Search algorithm: |
f822c95b DJ |
128 | * If there is a gdb_sysroot and path is absolute: |
129 | * Search for gdb_sysroot/path. | |
c8c18e65 KW |
130 | * else |
131 | * Look for it literally (unmodified). | |
e4f7b8c8 | 132 | * Look in SOLIB_SEARCH_PATH. |
f43caff8 | 133 | * If available, use target defined search function. |
f822c95b | 134 | * If gdb_sysroot is NOT set, perform the following two searches: |
c8c18e65 KW |
135 | * Look in inferior's $PATH. |
136 | * Look in inferior's $LD_LIBRARY_PATH. | |
ab38a727 | 137 | * |
c8c18e65 | 138 | * The last check avoids doing this search when targetting remote |
f822c95b | 139 | * machines since gdb_sysroot will almost always be set. |
7f86f058 | 140 | */ |
e4f7b8c8 | 141 | |
572d275c UW |
142 | char * |
143 | solib_find (char *in_pathname, int *fd) | |
e4f7b8c8 | 144 | { |
1cf3db46 | 145 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
e4f7b8c8 MS |
146 | int found_file = -1; |
147 | char *temp_pathname = NULL; | |
f822c95b | 148 | int gdb_sysroot_is_empty; |
08105857 PA |
149 | const char *solib_symbols_extension |
150 | = gdbarch_solib_symbols_extension (target_gdbarch); | |
ab38a727 PA |
151 | const char *fskind = effective_target_file_system_kind (); |
152 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
153 | char *sysroot = NULL; | |
08105857 PA |
154 | |
155 | /* If solib_symbols_extension is set, replace the file's | |
156 | extension. */ | |
157 | if (solib_symbols_extension) | |
158 | { | |
159 | char *p = in_pathname + strlen (in_pathname); | |
433759f7 | 160 | |
08105857 PA |
161 | while (p > in_pathname && *p != '.') |
162 | p--; | |
163 | ||
164 | if (*p == '.') | |
165 | { | |
166 | char *new_pathname; | |
167 | ||
168 | new_pathname = alloca (p - in_pathname + 1 | |
169 | + strlen (solib_symbols_extension) + 1); | |
170 | memcpy (new_pathname, in_pathname, p - in_pathname + 1); | |
171 | strcpy (new_pathname + (p - in_pathname) + 1, | |
172 | solib_symbols_extension); | |
173 | ||
174 | in_pathname = new_pathname; | |
175 | } | |
176 | } | |
58dc52c3 | 177 | |
f822c95b | 178 | gdb_sysroot_is_empty = (gdb_sysroot == NULL || *gdb_sysroot == 0); |
e4f7b8c8 | 179 | |
ab38a727 | 180 | if (!gdb_sysroot_is_empty) |
e4f7b8c8 | 181 | { |
f822c95b | 182 | int prefix_len = strlen (gdb_sysroot); |
f1d10cfb AS |
183 | |
184 | /* Remove trailing slashes from absolute prefix. */ | |
185 | while (prefix_len > 0 | |
f822c95b | 186 | && IS_DIR_SEPARATOR (gdb_sysroot[prefix_len - 1])) |
f1d10cfb AS |
187 | prefix_len--; |
188 | ||
ab38a727 PA |
189 | sysroot = savestring (gdb_sysroot, prefix_len); |
190 | make_cleanup (xfree, sysroot); | |
191 | } | |
192 | ||
193 | /* If we're on a non-DOS-based system, backslashes won't be | |
194 | understood as directory separator, so, convert them to forward | |
195 | slashes, iff we're supposed to handle DOS-based file system | |
196 | semantics for target paths. */ | |
197 | if (!DOS_BASED_FILE_SYSTEM && fskind == file_system_kind_dos_based) | |
198 | { | |
199 | char *p; | |
200 | ||
201 | /* Avoid clobbering our input. */ | |
202 | p = alloca (strlen (in_pathname) + 1); | |
203 | strcpy (p, in_pathname); | |
204 | in_pathname = p; | |
205 | ||
206 | for (; *p; p++) | |
207 | { | |
208 | if (*p == '\\') | |
209 | *p = '/'; | |
210 | } | |
211 | } | |
212 | ||
213 | /* Note, we're interested in IS_TARGET_ABSOLUTE_PATH, not | |
214 | IS_ABSOLUTE_PATH. The latter is for host paths only, while | |
215 | IN_PATHNAME is a target path. For example, if we're supposed to | |
216 | be handling DOS-like semantics we want to consider a | |
217 | 'c:/foo/bar.dll' path as an absolute path, even on a Unix box. | |
218 | With such a path, before giving up on the sysroot, we'll try: | |
219 | ||
220 | 1st attempt, c:/foo/bar.dll ==> /sysroot/c:/foo/bar.dll | |
221 | 2nd attempt, c:/foo/bar.dll ==> /sysroot/c/foo/bar.dll | |
222 | 3rd attempt, c:/foo/bar.dll ==> /sysroot/foo/bar.dll | |
223 | */ | |
224 | ||
225 | if (!IS_TARGET_ABSOLUTE_PATH (fskind, in_pathname) || gdb_sysroot_is_empty) | |
226 | temp_pathname = xstrdup (in_pathname); | |
227 | else | |
228 | { | |
229 | int need_dir_separator; | |
230 | ||
231 | need_dir_separator = !IS_DIR_SEPARATOR (in_pathname[0]); | |
232 | ||
f1d10cfb | 233 | /* Cat the prefixed pathname together. */ |
ab38a727 PA |
234 | temp_pathname = concat (sysroot, |
235 | need_dir_separator ? SLASH_STRING : "", | |
236 | in_pathname, (char *) NULL); | |
e4f7b8c8 MS |
237 | } |
238 | ||
f1838a98 UW |
239 | /* Handle remote files. */ |
240 | if (remote_filename_p (temp_pathname)) | |
241 | { | |
572d275c | 242 | *fd = -1; |
f748fb40 | 243 | do_cleanups (old_chain); |
ab38a727 | 244 | return temp_pathname; |
f1838a98 UW |
245 | } |
246 | ||
f1d10cfb AS |
247 | /* Now see if we can open it. */ |
248 | found_file = open (temp_pathname, O_RDONLY | O_BINARY, 0); | |
ab38a727 PA |
249 | if (found_file < 0) |
250 | xfree (temp_pathname); | |
251 | ||
252 | /* If the search in gdb_sysroot failed, and the path name has a | |
253 | drive spec (e.g, c:/foo), try stripping ':' from the drive spec, | |
254 | and retrying in the sysroot: | |
255 | c:/foo/bar.dll ==> /sysroot/c/foo/bar.dll. */ | |
f1d10cfb | 256 | |
ab38a727 PA |
257 | if (found_file < 0 |
258 | && !gdb_sysroot_is_empty | |
259 | && HAS_TARGET_DRIVE_SPEC (fskind, in_pathname)) | |
260 | { | |
261 | int need_dir_separator = !IS_DIR_SEPARATOR (in_pathname[2]); | |
262 | char *drive = savestring (in_pathname, 1); | |
263 | ||
264 | temp_pathname = concat (sysroot, | |
265 | SLASH_STRING, | |
266 | drive, | |
267 | need_dir_separator ? SLASH_STRING : "", | |
268 | in_pathname + 2, (char *) NULL); | |
269 | xfree (drive); | |
270 | ||
271 | found_file = open (temp_pathname, O_RDONLY | O_BINARY, 0); | |
272 | if (found_file < 0) | |
273 | { | |
ab38a727 PA |
274 | xfree (temp_pathname); |
275 | ||
276 | /* If the search in gdb_sysroot still failed, try fully | |
277 | stripping the drive spec, and trying once more in the | |
278 | sysroot before giving up. | |
279 | ||
280 | c:/foo/bar.dll ==> /sysroot/foo/bar.dll. */ | |
281 | ||
282 | temp_pathname = concat (sysroot, | |
283 | need_dir_separator ? SLASH_STRING : "", | |
284 | in_pathname + 2, (char *) NULL); | |
285 | ||
286 | found_file = open (temp_pathname, O_RDONLY | O_BINARY, 0); | |
287 | if (found_file < 0) | |
288 | xfree (temp_pathname); | |
289 | } | |
290 | } | |
0997b535 | 291 | |
ab38a727 PA |
292 | do_cleanups (old_chain); |
293 | ||
294 | /* We try to find the library in various ways. After each attempt, | |
295 | either found_file >= 0 and temp_pathname is a malloc'd string, or | |
296 | found_file < 0 and temp_pathname does not point to storage that | |
297 | needs to be freed. */ | |
298 | ||
299 | if (found_file < 0) | |
300 | temp_pathname = NULL; | |
301 | ||
302 | /* If not found, search the solib_search_path (if any). */ | |
303 | if (found_file < 0 && solib_search_path != NULL) | |
304 | found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST, | |
305 | in_pathname, O_RDONLY | O_BINARY, &temp_pathname); | |
0997b535 | 306 | |
f822c95b | 307 | /* If the search in gdb_sysroot failed, and the path name is |
ba5f0d88 OF |
308 | absolute at this point, make it relative. (openp will try and open the |
309 | file according to its absolute path otherwise, which is not what we want.) | |
310 | Affects subsequent searches for this solib. */ | |
ab38a727 | 311 | if (found_file < 0 && IS_TARGET_ABSOLUTE_PATH (fskind, in_pathname)) |
ba5f0d88 OF |
312 | { |
313 | /* First, get rid of any drive letters etc. */ | |
ab38a727 PA |
314 | while (!IS_TARGET_DIR_SEPARATOR (fskind, *in_pathname)) |
315 | in_pathname++; | |
ba5f0d88 OF |
316 | |
317 | /* Next, get rid of all leading dir separators. */ | |
ab38a727 PA |
318 | while (IS_TARGET_DIR_SEPARATOR (fskind, *in_pathname)) |
319 | in_pathname++; | |
ba5f0d88 | 320 | } |
ab38a727 | 321 | |
c8c18e65 | 322 | /* If not found, search the solib_search_path (if any). */ |
e4f7b8c8 | 323 | if (found_file < 0 && solib_search_path != NULL) |
014d698b | 324 | found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST, |
fbdebf46 | 325 | in_pathname, O_RDONLY | O_BINARY, &temp_pathname); |
ab38a727 | 326 | |
ba5f0d88 OF |
327 | /* If not found, next search the solib_search_path (if any) for the basename |
328 | only (ignoring the path). This is to allow reading solibs from a path | |
329 | that differs from the opened path. */ | |
330 | if (found_file < 0 && solib_search_path != NULL) | |
014d698b | 331 | found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST, |
ab38a727 PA |
332 | target_lbasename (fskind, in_pathname), |
333 | O_RDONLY | O_BINARY, &temp_pathname); | |
e4f7b8c8 | 334 | |
c378eb4e | 335 | /* If not found, try to use target supplied solib search method. */ |
66aba65d | 336 | if (found_file < 0 && ops->find_and_open_solib) |
637d6690 | 337 | found_file = ops->find_and_open_solib (in_pathname, O_RDONLY | O_BINARY, |
66aba65d | 338 | &temp_pathname); |
2610b0bf | 339 | |
c378eb4e | 340 | /* If not found, next search the inferior's $PATH environment variable. */ |
f822c95b | 341 | if (found_file < 0 && gdb_sysroot_is_empty) |
3f81c18a VP |
342 | found_file = openp (get_in_environ (current_inferior ()->environment, |
343 | "PATH"), | |
fbdebf46 | 344 | OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY, |
014d698b | 345 | &temp_pathname); |
e4f7b8c8 | 346 | |
ab38a727 | 347 | /* If not found, next search the inferior's $LD_LIBRARY_PATH |
c378eb4e | 348 | environment variable. */ |
f822c95b | 349 | if (found_file < 0 && gdb_sysroot_is_empty) |
3f81c18a VP |
350 | found_file = openp (get_in_environ (current_inferior ()->environment, |
351 | "LD_LIBRARY_PATH"), | |
fbdebf46 | 352 | OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY, |
014d698b | 353 | &temp_pathname); |
e4f7b8c8 | 354 | |
572d275c UW |
355 | *fd = found_file; |
356 | return temp_pathname; | |
357 | } | |
358 | ||
359 | /* Open and return a BFD for the shared library PATHNAME. If FD is not -1, | |
360 | it is used as file handle to open the file. Throws an error if the file | |
361 | could not be opened. Handles both local and remote file access. | |
362 | ||
363 | PATHNAME must be malloc'ed by the caller. If successful, the new BFD's | |
364 | name will point to it. If unsuccessful, PATHNAME will be freed and the | |
365 | FD will be closed (unless FD was -1). */ | |
366 | ||
367 | bfd * | |
368 | solib_bfd_fopen (char *pathname, int fd) | |
369 | { | |
370 | bfd *abfd; | |
371 | ||
372 | if (remote_filename_p (pathname)) | |
373 | { | |
374 | gdb_assert (fd == -1); | |
375 | abfd = remote_bfd_open (pathname, gnutarget); | |
376 | } | |
377 | else | |
378 | { | |
379 | abfd = bfd_fopen (pathname, gnutarget, FOPEN_RB, fd); | |
380 | ||
381 | if (abfd) | |
382 | bfd_set_cacheable (abfd, 1); | |
383 | else if (fd != -1) | |
384 | close (fd); | |
385 | } | |
f1838a98 | 386 | |
f1838a98 UW |
387 | if (!abfd) |
388 | { | |
572d275c | 389 | make_cleanup (xfree, pathname); |
f1838a98 | 390 | error (_("Could not open `%s' as an executable file: %s"), |
572d275c | 391 | pathname, bfd_errmsg (bfd_get_error ())); |
f1838a98 UW |
392 | } |
393 | ||
572d275c UW |
394 | return abfd; |
395 | } | |
396 | ||
397 | /* Find shared library PATHNAME and open a BFD for it. */ | |
398 | ||
399 | bfd * | |
400 | solib_bfd_open (char *pathname) | |
401 | { | |
572d275c UW |
402 | char *found_pathname; |
403 | int found_file; | |
404 | bfd *abfd; | |
378d2b72 | 405 | const struct bfd_arch_info *b; |
572d275c | 406 | |
572d275c UW |
407 | /* Search for shared library file. */ |
408 | found_pathname = solib_find (pathname, &found_file); | |
409 | if (found_pathname == NULL) | |
048d532d PA |
410 | { |
411 | /* Return failure if the file could not be found, so that we can | |
412 | accumulate messages about missing libraries. */ | |
413 | if (errno == ENOENT) | |
414 | return NULL; | |
415 | ||
416 | perror_with_name (pathname); | |
417 | } | |
572d275c UW |
418 | |
419 | /* Open bfd for shared library. */ | |
420 | abfd = solib_bfd_fopen (found_pathname, found_file); | |
421 | ||
422 | /* Check bfd format. */ | |
f1838a98 | 423 | if (!bfd_check_format (abfd, bfd_object)) |
0997b535 | 424 | { |
f1838a98 | 425 | bfd_close (abfd); |
572d275c | 426 | make_cleanup (xfree, found_pathname); |
f1838a98 | 427 | error (_("`%s': not in executable format: %s"), |
572d275c | 428 | found_pathname, bfd_errmsg (bfd_get_error ())); |
0997b535 | 429 | } |
f1838a98 | 430 | |
378d2b72 HZ |
431 | /* Check bfd arch. */ |
432 | b = gdbarch_bfd_arch_info (target_gdbarch); | |
69e2bf17 | 433 | if (!b->compatible (b, bfd_get_arch_info (abfd))) |
378d2b72 HZ |
434 | warning (_("`%s': Shared library architecture %s is not compatible " |
435 | "with target architecture %s."), found_pathname, | |
436 | bfd_get_arch_info (abfd)->printable_name, b->printable_name); | |
437 | ||
f1838a98 | 438 | return abfd; |
e4f7b8c8 MS |
439 | } |
440 | ||
7f86f058 PA |
441 | /* Given a pointer to one of the shared objects in our list of mapped |
442 | objects, use the recorded name to open a bfd descriptor for the | |
443 | object, build a section table, relocate all the section addresses | |
444 | by the base address at which the shared object was mapped, and then | |
445 | add the sections to the target's section table. | |
e4f7b8c8 | 446 | |
7f86f058 PA |
447 | FIXME: In most (all?) cases the shared object file name recorded in |
448 | the dynamic linkage tables will be a fully qualified pathname. For | |
c5aa993b JM |
449 | cases where it isn't, do we really mimic the systems search |
450 | mechanism correctly in the below code (particularly the tilde | |
7f86f058 | 451 | expansion stuff?). */ |
c906108c SS |
452 | |
453 | static int | |
048d532d | 454 | solib_map_sections (struct so_list *so) |
c906108c | 455 | { |
831a0c44 | 456 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
c906108c | 457 | char *filename; |
0542c86d | 458 | struct target_section *p; |
c906108c SS |
459 | struct cleanup *old_chain; |
460 | bfd *abfd; | |
c5aa993b JM |
461 | |
462 | filename = tilde_expand (so->so_name); | |
b8c9b27d | 463 | old_chain = make_cleanup (xfree, filename); |
831a0c44 | 464 | abfd = ops->bfd_open (filename); |
f1838a98 | 465 | do_cleanups (old_chain); |
e4f7b8c8 | 466 | |
048d532d PA |
467 | if (abfd == NULL) |
468 | return 0; | |
469 | ||
13437d4b | 470 | /* Leave bfd open, core_xfer_memory and "info files" need it. */ |
3db741ef | 471 | so->abfd = gdb_bfd_ref (abfd); |
23e04971 | 472 | |
e4f7b8c8 | 473 | /* copy full path name into so_name, so that later symbol_file_add |
c378eb4e | 474 | can find it. */ |
f1838a98 UW |
475 | if (strlen (bfd_get_filename (abfd)) >= SO_NAME_MAX_PATH_SIZE) |
476 | error (_("Shared library file name is too long.")); | |
477 | strcpy (so->so_name, bfd_get_filename (abfd)); | |
23e04971 | 478 | |
13437d4b | 479 | if (build_section_table (abfd, &so->sections, &so->sections_end)) |
23e04971 | 480 | { |
8a3fe4f8 | 481 | error (_("Can't find the file sections in `%s': %s"), |
13437d4b | 482 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
23e04971 | 483 | } |
104c1213 | 484 | |
13437d4b | 485 | for (p = so->sections; p < so->sections_end; p++) |
104c1213 | 486 | { |
13437d4b KB |
487 | /* Relocate the section binding addresses as recorded in the shared |
488 | object's file by the base address to which the object was actually | |
c378eb4e | 489 | mapped. */ |
66aba65d | 490 | ops->relocate_section_addresses (so, p); |
cfa9d6d9 DJ |
491 | |
492 | /* If the target didn't provide information about the address | |
493 | range of the shared object, assume we want the location of | |
494 | the .text section. */ | |
495 | if (so->addr_low == 0 && so->addr_high == 0 | |
496 | && strcmp (p->the_bfd_section->name, ".text") == 0) | |
13437d4b | 497 | { |
cfa9d6d9 DJ |
498 | so->addr_low = p->addr; |
499 | so->addr_high = p->endaddr; | |
13437d4b | 500 | } |
104c1213 JM |
501 | } |
502 | ||
048d532d PA |
503 | /* Add the shared object's sections to the current set of file |
504 | section tables. Do this immediately after mapping the object so | |
505 | that later nodes in the list can query this object, as is needed | |
506 | in solib-osf.c. */ | |
507 | add_target_sections (so->sections, so->sections_end); | |
508 | ||
509 | return 1; | |
104c1213 | 510 | } |
c906108c | 511 | |
a86988f2 PA |
512 | /* Free symbol-file related contents of SO. If we have opened a BFD |
513 | for SO, close it. If we have placed SO's sections in some target's | |
514 | section table, the caller is responsible for removing them. | |
515 | ||
516 | This function doesn't mess with objfiles at all. If there is an | |
517 | objfile associated with SO that needs to be removed, the caller is | |
518 | responsible for taking care of that. */ | |
519 | ||
520 | static void | |
521 | free_so_symbols (struct so_list *so) | |
522 | { | |
a86988f2 PA |
523 | if (so->sections) |
524 | { | |
525 | xfree (so->sections); | |
526 | so->sections = so->sections_end = NULL; | |
527 | } | |
528 | ||
529 | gdb_bfd_unref (so->abfd); | |
530 | so->abfd = NULL; | |
531 | ||
532 | /* Our caller closed the objfile, possibly via objfile_purge_solibs. */ | |
533 | so->symbols_loaded = 0; | |
534 | so->objfile = NULL; | |
535 | ||
536 | so->addr_low = so->addr_high = 0; | |
537 | ||
538 | /* Restore the target-supplied file name. SO_NAME may be the path | |
539 | of the symbol file. */ | |
540 | strcpy (so->so_name, so->so_original_name); | |
541 | } | |
542 | ||
7f86f058 | 543 | /* Free the storage associated with the `struct so_list' object SO. |
c378eb4e | 544 | If we have opened a BFD for SO, close it. |
c906108c | 545 | |
07cd4b97 JB |
546 | The caller is responsible for removing SO from whatever list it is |
547 | a member of. If we have placed SO's sections in some target's | |
548 | section table, the caller is responsible for removing them. | |
c906108c | 549 | |
07cd4b97 JB |
550 | This function doesn't mess with objfiles at all. If there is an |
551 | objfile associated with SO that needs to be removed, the caller is | |
552 | responsible for taking care of that. */ | |
553 | ||
13437d4b | 554 | void |
07cd4b97 | 555 | free_so (struct so_list *so) |
c906108c | 556 | { |
1cf3db46 | 557 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
c5aa993b | 558 | |
a86988f2 | 559 | free_so_symbols (so); |
66aba65d | 560 | ops->free_so (so); |
07cd4b97 | 561 | |
b8c9b27d | 562 | xfree (so); |
c906108c SS |
563 | } |
564 | ||
07cd4b97 | 565 | |
f8766ec1 KB |
566 | /* Return address of first so_list entry in master shared object list. */ |
567 | struct so_list * | |
568 | master_so_list (void) | |
569 | { | |
570 | return so_list_head; | |
571 | } | |
572 | ||
7eedccfa PP |
573 | /* Read in symbols for shared object SO. If SYMFILE_VERBOSE is set in FLAGS, |
574 | be chatty about it. Return non-zero if any symbols were actually | |
42a6e6a0 MK |
575 | loaded. */ |
576 | ||
577 | int | |
7eedccfa | 578 | solib_read_symbols (struct so_list *so, int flags) |
42a6e6a0 | 579 | { |
7eedccfa PP |
580 | const int from_tty = flags & SYMFILE_VERBOSE; |
581 | ||
42a6e6a0 MK |
582 | if (so->symbols_loaded) |
583 | { | |
a86988f2 | 584 | /* If needed, we've already warned in our caller. */ |
42a6e6a0 | 585 | } |
8bb75286 DJ |
586 | else if (so->abfd == NULL) |
587 | { | |
048d532d PA |
588 | /* We've already warned about this library, when trying to open |
589 | it. */ | |
8bb75286 | 590 | } |
42a6e6a0 MK |
591 | else |
592 | { | |
048d532d PA |
593 | volatile struct gdb_exception e; |
594 | ||
595 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
596 | { | |
597 | struct section_addr_info *sap; | |
598 | ||
599 | /* Have we already loaded this shared object? */ | |
600 | ALL_OBJFILES (so->objfile) | |
601 | { | |
0ba1096a | 602 | if (filename_cmp (so->objfile->name, so->so_name) == 0 |
e4f6d2ec | 603 | && so->objfile->addr_low == so->addr_low) |
048d532d PA |
604 | break; |
605 | } | |
606 | if (so->objfile != NULL) | |
607 | break; | |
608 | ||
609 | sap = build_section_addr_info_from_section_table (so->sections, | |
610 | so->sections_end); | |
611 | so->objfile = symbol_file_add_from_bfd (so->abfd, | |
63524580 JK |
612 | flags, sap, OBJF_SHARED, |
613 | NULL); | |
e4f6d2ec | 614 | so->objfile->addr_low = so->addr_low; |
048d532d PA |
615 | free_section_addr_info (sap); |
616 | } | |
617 | ||
618 | if (e.reason < 0) | |
14ad3217 JK |
619 | exception_fprintf (gdb_stderr, e, _("Error while reading shared" |
620 | " library symbols for %s:\n"), | |
621 | so->so_name); | |
048d532d PA |
622 | else |
623 | { | |
624 | if (from_tty || info_verbose) | |
625 | printf_unfiltered (_("Loaded symbols for %s\n"), so->so_name); | |
626 | so->symbols_loaded = 1; | |
627 | } | |
7eedccfa | 628 | return 1; |
42a6e6a0 MK |
629 | } |
630 | ||
631 | return 0; | |
632 | } | |
c906108c | 633 | |
59145f8c AR |
634 | /* Return 1 if KNOWN->objfile is used by any other so_list object in the |
635 | SO_LIST_HEAD list. Return 0 otherwise. */ | |
636 | ||
637 | static int | |
638 | solib_used (const struct so_list *const known) | |
639 | { | |
640 | const struct so_list *pivot; | |
641 | ||
642 | for (pivot = so_list_head; pivot != NULL; pivot = pivot->next) | |
643 | if (pivot != known && pivot->objfile == known->objfile) | |
644 | return 1; | |
645 | return 0; | |
646 | } | |
647 | ||
7f86f058 | 648 | /* Synchronize GDB's shared object list with inferior's. |
c906108c | 649 | |
07cd4b97 | 650 | Extract the list of currently loaded shared objects from the |
105b175f JB |
651 | inferior, and compare it with the list of shared objects currently |
652 | in GDB's so_list_head list. Edit so_list_head to bring it in sync | |
653 | with the inferior's new list. | |
c906108c | 654 | |
105b175f JB |
655 | If we notice that the inferior has unloaded some shared objects, |
656 | free any symbolic info GDB had read about those shared objects. | |
657 | ||
658 | Don't load symbolic info for any new shared objects; just add them | |
659 | to the list, and leave their symbols_loaded flag clear. | |
07cd4b97 JB |
660 | |
661 | If FROM_TTY is non-null, feel free to print messages about what | |
662 | we're doing. | |
c906108c | 663 | |
07cd4b97 JB |
664 | If TARGET is non-null, add the sections of all new shared objects |
665 | to TARGET's section table. Note that this doesn't remove any | |
666 | sections for shared objects that have been unloaded, and it | |
667 | doesn't check to see if the new shared objects are already present in | |
668 | the section table. But we only use this for core files and | |
669 | processes we've just attached to, so that's okay. */ | |
c906108c | 670 | |
a78f21af | 671 | static void |
105b175f | 672 | update_solib_list (int from_tty, struct target_ops *target) |
07cd4b97 | 673 | { |
1cf3db46 | 674 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 675 | struct so_list *inferior = ops->current_sos(); |
07cd4b97 JB |
676 | struct so_list *gdb, **gdb_link; |
677 | ||
181e7f93 PA |
678 | /* We can reach here due to changing solib-search-path or the |
679 | sysroot, before having any inferior. */ | |
50c71eaf | 680 | if (target_has_execution && !ptid_equal (inferior_ptid, null_ptid)) |
181e7f93 PA |
681 | { |
682 | struct inferior *inf = current_inferior (); | |
683 | ||
684 | /* If we are attaching to a running process for which we | |
685 | have not opened a symbol file, we may be able to get its | |
686 | symbols now! */ | |
687 | if (inf->attach_flag && symfile_objfile == NULL) | |
688 | catch_errors (ops->open_symbol_file_object, &from_tty, | |
689 | "Error reading attached process's symbol file.\n", | |
690 | RETURN_MASK_ALL); | |
691 | } | |
104c1213 | 692 | |
07cd4b97 JB |
693 | /* GDB and the inferior's dynamic linker each maintain their own |
694 | list of currently loaded shared objects; we want to bring the | |
695 | former in sync with the latter. Scan both lists, seeing which | |
696 | shared objects appear where. There are three cases: | |
697 | ||
698 | - A shared object appears on both lists. This means that GDB | |
105b175f JB |
699 | knows about it already, and it's still loaded in the inferior. |
700 | Nothing needs to happen. | |
07cd4b97 JB |
701 | |
702 | - A shared object appears only on GDB's list. This means that | |
105b175f JB |
703 | the inferior has unloaded it. We should remove the shared |
704 | object from GDB's tables. | |
07cd4b97 JB |
705 | |
706 | - A shared object appears only on the inferior's list. This | |
105b175f JB |
707 | means that it's just been loaded. We should add it to GDB's |
708 | tables. | |
07cd4b97 JB |
709 | |
710 | So we walk GDB's list, checking each entry to see if it appears | |
711 | in the inferior's list too. If it does, no action is needed, and | |
712 | we remove it from the inferior's list. If it doesn't, the | |
713 | inferior has unloaded it, and we remove it from GDB's list. By | |
714 | the time we're done walking GDB's list, the inferior's list | |
715 | contains only the new shared objects, which we then add. */ | |
716 | ||
717 | gdb = so_list_head; | |
718 | gdb_link = &so_list_head; | |
719 | while (gdb) | |
c906108c | 720 | { |
07cd4b97 JB |
721 | struct so_list *i = inferior; |
722 | struct so_list **i_link = &inferior; | |
723 | ||
724 | /* Check to see whether the shared object *gdb also appears in | |
725 | the inferior's current list. */ | |
726 | while (i) | |
c906108c | 727 | { |
a7c02bc8 VP |
728 | if (ops->same) |
729 | { | |
730 | if (ops->same (gdb, i)) | |
731 | break; | |
732 | } | |
733 | else | |
734 | { | |
0ba1096a | 735 | if (! filename_cmp (gdb->so_original_name, i->so_original_name)) |
a7c02bc8 VP |
736 | break; |
737 | } | |
07cd4b97 JB |
738 | |
739 | i_link = &i->next; | |
740 | i = *i_link; | |
c906108c | 741 | } |
c5aa993b | 742 | |
07cd4b97 JB |
743 | /* If the shared object appears on the inferior's list too, then |
744 | it's still loaded, so we don't need to do anything. Delete | |
745 | it from the inferior's list, and leave it on GDB's list. */ | |
746 | if (i) | |
c906108c | 747 | { |
07cd4b97 | 748 | *i_link = i->next; |
07cd4b97 JB |
749 | free_so (i); |
750 | gdb_link = &gdb->next; | |
751 | gdb = *gdb_link; | |
752 | } | |
753 | ||
754 | /* If it's not on the inferior's list, remove it from GDB's tables. */ | |
755 | else | |
756 | { | |
42a6e6a0 MK |
757 | /* Notify any observer that the shared object has been |
758 | unloaded before we remove it from GDB's tables. */ | |
84acb35a JJ |
759 | observer_notify_solib_unloaded (gdb); |
760 | ||
07cd4b97 | 761 | *gdb_link = gdb->next; |
07cd4b97 JB |
762 | |
763 | /* Unless the user loaded it explicitly, free SO's objfile. */ | |
59145f8c AR |
764 | if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED) |
765 | && !solib_used (gdb)) | |
07cd4b97 JB |
766 | free_objfile (gdb->objfile); |
767 | ||
768 | /* Some targets' section tables might be referring to | |
769 | sections from so->abfd; remove them. */ | |
770 | remove_target_sections (gdb->abfd); | |
771 | ||
772 | free_so (gdb); | |
773 | gdb = *gdb_link; | |
c906108c SS |
774 | } |
775 | } | |
c5aa993b | 776 | |
07cd4b97 JB |
777 | /* Now the inferior's list contains only shared objects that don't |
778 | appear in GDB's list --- those that are newly loaded. Add them | |
e8930304 | 779 | to GDB's shared object list. */ |
07cd4b97 | 780 | if (inferior) |
c906108c | 781 | { |
048d532d PA |
782 | int not_found = 0; |
783 | const char *not_found_filename = NULL; | |
784 | ||
07cd4b97 JB |
785 | struct so_list *i; |
786 | ||
787 | /* Add the new shared objects to GDB's list. */ | |
788 | *gdb_link = inferior; | |
789 | ||
e8930304 | 790 | /* Fill in the rest of each of the `struct so_list' nodes. */ |
07cd4b97 | 791 | for (i = inferior; i; i = i->next) |
c906108c | 792 | { |
048d532d PA |
793 | volatile struct gdb_exception e; |
794 | ||
6c95b8df | 795 | i->pspace = current_program_space; |
07cd4b97 | 796 | |
048d532d PA |
797 | TRY_CATCH (e, RETURN_MASK_ERROR) |
798 | { | |
799 | /* Fill in the rest of the `struct so_list' node. */ | |
800 | if (!solib_map_sections (i)) | |
801 | { | |
802 | not_found++; | |
803 | if (not_found_filename == NULL) | |
804 | not_found_filename = i->so_original_name; | |
805 | } | |
806 | } | |
07cd4b97 | 807 | |
048d532d | 808 | if (e.reason < 0) |
3e43a32a MS |
809 | exception_fprintf (gdb_stderr, e, |
810 | _("Error while mapping shared " | |
811 | "library sections:\n")); | |
42a6e6a0 MK |
812 | |
813 | /* Notify any observer that the shared object has been | |
048d532d | 814 | loaded now that we've added it to GDB's tables. */ |
42a6e6a0 | 815 | observer_notify_solib_loaded (i); |
c906108c | 816 | } |
048d532d PA |
817 | |
818 | /* If a library was not found, issue an appropriate warning | |
819 | message. We have to use a single call to warning in case the | |
820 | front end does something special with warnings, e.g., pop up | |
821 | a dialog box. It Would Be Nice if we could get a "warning: " | |
822 | prefix on each line in the CLI front end, though - it doesn't | |
823 | stand out well. */ | |
824 | ||
825 | if (not_found == 1) | |
3e43a32a MS |
826 | warning (_("Could not load shared library symbols for %s.\n" |
827 | "Do you need \"set solib-search-path\" " | |
828 | "or \"set sysroot\"?"), | |
048d532d PA |
829 | not_found_filename); |
830 | else if (not_found > 1) | |
831 | warning (_("\ | |
832 | Could not load shared library symbols for %d libraries, e.g. %s.\n\ | |
833 | Use the \"info sharedlibrary\" command to see the complete listing.\n\ | |
834 | Do you need \"set solib-search-path\" or \"set sysroot\"?"), | |
835 | not_found, not_found_filename); | |
e8930304 | 836 | } |
105b175f JB |
837 | } |
838 | ||
17a37d48 PP |
839 | |
840 | /* Return non-zero if NAME is the libpthread shared library. | |
6612ad7f JB |
841 | |
842 | Uses a fairly simplistic heuristic approach where we check | |
843 | the file name against "/libpthread". This can lead to false | |
844 | positives, but this should be good enough in practice. */ | |
845 | ||
17a37d48 PP |
846 | int |
847 | libpthread_name_p (const char *name) | |
848 | { | |
849 | return (strstr (name, "/libpthread") != NULL); | |
850 | } | |
851 | ||
852 | /* Return non-zero if SO is the libpthread shared library. */ | |
853 | ||
6612ad7f JB |
854 | static int |
855 | libpthread_solib_p (struct so_list *so) | |
856 | { | |
17a37d48 | 857 | return libpthread_name_p (so->so_name); |
6612ad7f | 858 | } |
105b175f | 859 | |
7f86f058 | 860 | /* Read in symbolic information for any shared objects whose names |
105b175f JB |
861 | match PATTERN. (If we've already read a shared object's symbol |
862 | info, leave it alone.) If PATTERN is zero, read them all. | |
863 | ||
990f9fe3 FF |
864 | If READSYMS is 0, defer reading symbolic information until later |
865 | but still do any needed low level processing. | |
866 | ||
105b175f JB |
867 | FROM_TTY and TARGET are as described for update_solib_list, above. */ |
868 | ||
869 | void | |
3e43a32a MS |
870 | solib_add (char *pattern, int from_tty, |
871 | struct target_ops *target, int readsyms) | |
105b175f JB |
872 | { |
873 | struct so_list *gdb; | |
874 | ||
2eff07b3 PP |
875 | current_program_space->solib_add_generation++; |
876 | ||
105b175f JB |
877 | if (pattern) |
878 | { | |
879 | char *re_err = re_comp (pattern); | |
880 | ||
881 | if (re_err) | |
8a3fe4f8 | 882 | error (_("Invalid regexp: %s"), re_err); |
105b175f JB |
883 | } |
884 | ||
885 | update_solib_list (from_tty, target); | |
c906108c | 886 | |
105b175f JB |
887 | /* Walk the list of currently loaded shared libraries, and read |
888 | symbols for any that match the pattern --- or any whose symbols | |
889 | aren't already loaded, if no pattern was given. */ | |
e8930304 JB |
890 | { |
891 | int any_matches = 0; | |
892 | int loaded_any_symbols = 0; | |
7eedccfa PP |
893 | const int flags = |
894 | SYMFILE_DEFER_BP_RESET | (from_tty ? SYMFILE_VERBOSE : 0); | |
c906108c | 895 | |
e8930304 JB |
896 | for (gdb = so_list_head; gdb; gdb = gdb->next) |
897 | if (! pattern || re_exec (gdb->so_name)) | |
898 | { | |
6612ad7f JB |
899 | /* Normally, we would read the symbols from that library |
900 | only if READSYMS is set. However, we're making a small | |
901 | exception for the pthread library, because we sometimes | |
902 | need the library symbols to be loaded in order to provide | |
903 | thread support (x86-linux for instance). */ | |
904 | const int add_this_solib = | |
905 | (readsyms || libpthread_solib_p (gdb)); | |
906 | ||
e8930304 | 907 | any_matches = 1; |
a86988f2 PA |
908 | if (add_this_solib) |
909 | { | |
910 | if (gdb->symbols_loaded) | |
911 | { | |
912 | /* If no pattern was given, be quiet for shared | |
913 | libraries we have already loaded. */ | |
914 | if (pattern && (from_tty || info_verbose)) | |
915 | printf_unfiltered (_("Symbols already loaded for %s\n"), | |
916 | gdb->so_name); | |
917 | } | |
918 | else if (solib_read_symbols (gdb, flags)) | |
919 | loaded_any_symbols = 1; | |
920 | } | |
e8930304 JB |
921 | } |
922 | ||
7eedccfa PP |
923 | if (loaded_any_symbols) |
924 | breakpoint_re_set (); | |
925 | ||
e8930304 JB |
926 | if (from_tty && pattern && ! any_matches) |
927 | printf_unfiltered | |
928 | ("No loaded shared libraries match the pattern `%s'.\n", pattern); | |
929 | ||
930 | if (loaded_any_symbols) | |
931 | { | |
1cf3db46 | 932 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 933 | |
e8930304 JB |
934 | /* Getting new symbols may change our opinion about what is |
935 | frameless. */ | |
936 | reinit_frame_cache (); | |
937 | ||
66aba65d | 938 | ops->special_symbol_handling (); |
e8930304 JB |
939 | } |
940 | } | |
c906108c SS |
941 | } |
942 | ||
7f86f058 PA |
943 | /* Implement the "info sharedlibrary" command. Walk through the |
944 | shared library list and print information about each attached | |
945 | library matching PATTERN. If PATTERN is elided, print them | |
946 | all. */ | |
c906108c SS |
947 | |
948 | static void | |
55333a84 | 949 | info_sharedlibrary_command (char *pattern, int from_tty) |
c906108c | 950 | { |
52f0bd74 | 951 | struct so_list *so = NULL; /* link map state variable */ |
55333a84 | 952 | int so_missing_debug_info = 0; |
c906108c | 953 | int addr_width; |
55333a84 DE |
954 | int nr_libs; |
955 | struct cleanup *table_cleanup; | |
956 | struct gdbarch *gdbarch = target_gdbarch; | |
79a45e25 | 957 | struct ui_out *uiout = current_uiout; |
55333a84 DE |
958 | |
959 | if (pattern) | |
960 | { | |
961 | char *re_err = re_comp (pattern); | |
962 | ||
963 | if (re_err) | |
964 | error (_("Invalid regexp: %s"), re_err); | |
965 | } | |
c906108c | 966 | |
84eb3c4f | 967 | /* "0x", a little whitespace, and two hex digits per byte of pointers. */ |
55333a84 | 968 | addr_width = 4 + (gdbarch_ptr_bit (gdbarch) / 4); |
c906108c | 969 | |
105b175f | 970 | update_solib_list (from_tty, 0); |
07cd4b97 | 971 | |
55333a84 DE |
972 | /* make_cleanup_ui_out_table_begin_end needs to know the number of |
973 | rows, so we need to make two passes over the libs. */ | |
974 | ||
975 | for (nr_libs = 0, so = so_list_head; so; so = so->next) | |
c906108c | 976 | { |
c5aa993b | 977 | if (so->so_name[0]) |
c906108c | 978 | { |
55333a84 DE |
979 | if (pattern && ! re_exec (so->so_name)) |
980 | continue; | |
981 | ++nr_libs; | |
982 | } | |
983 | } | |
984 | ||
985 | table_cleanup = | |
986 | make_cleanup_ui_out_table_begin_end (uiout, 4, nr_libs, | |
987 | "SharedLibraryTable"); | |
988 | ||
989 | /* The "- 1" is because ui_out adds one space between columns. */ | |
990 | ui_out_table_header (uiout, addr_width - 1, ui_left, "from", "From"); | |
991 | ui_out_table_header (uiout, addr_width - 1, ui_left, "to", "To"); | |
992 | ui_out_table_header (uiout, 12 - 1, ui_left, "syms-read", "Syms Read"); | |
993 | ui_out_table_header (uiout, 0, ui_noalign, | |
994 | "name", "Shared Object Library"); | |
995 | ||
996 | ui_out_table_body (uiout); | |
997 | ||
998 | for (so = so_list_head; so; so = so->next) | |
999 | { | |
1000 | struct cleanup *lib_cleanup; | |
c906108c | 1001 | |
55333a84 DE |
1002 | if (! so->so_name[0]) |
1003 | continue; | |
1004 | if (pattern && ! re_exec (so->so_name)) | |
1005 | continue; | |
1006 | ||
1007 | lib_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, "lib"); | |
1008 | ||
1009 | if (so->addr_high != 0) | |
1010 | { | |
1011 | ui_out_field_core_addr (uiout, "from", gdbarch, so->addr_low); | |
1012 | ui_out_field_core_addr (uiout, "to", gdbarch, so->addr_high); | |
1013 | } | |
1014 | else | |
1015 | { | |
1016 | ui_out_field_skip (uiout, "from"); | |
1017 | ui_out_field_skip (uiout, "to"); | |
c906108c | 1018 | } |
55333a84 DE |
1019 | |
1020 | if (! ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ())) | |
1021 | && so->symbols_loaded | |
e0ae4240 | 1022 | && !objfile_has_symbols (so->objfile)) |
55333a84 DE |
1023 | { |
1024 | so_missing_debug_info = 1; | |
1025 | ui_out_field_string (uiout, "syms-read", "Yes (*)"); | |
1026 | } | |
1027 | else | |
1028 | ui_out_field_string (uiout, "syms-read", | |
1029 | so->symbols_loaded ? "Yes" : "No"); | |
1030 | ||
1031 | ui_out_field_string (uiout, "name", so->so_name); | |
1032 | ||
1033 | ui_out_text (uiout, "\n"); | |
1034 | ||
1035 | do_cleanups (lib_cleanup); | |
c906108c | 1036 | } |
55333a84 DE |
1037 | |
1038 | do_cleanups (table_cleanup); | |
1039 | ||
1040 | if (nr_libs == 0) | |
1041 | { | |
1042 | if (pattern) | |
1043 | ui_out_message (uiout, 0, | |
1044 | _("No shared libraries matched.\n")); | |
1045 | else | |
1046 | ui_out_message (uiout, 0, | |
1047 | _("No shared libraries loaded at this time.\n")); | |
1048 | } | |
1049 | else | |
c906108c | 1050 | { |
55333a84 DE |
1051 | if (so_missing_debug_info) |
1052 | ui_out_message (uiout, 0, | |
3e43a32a MS |
1053 | _("(*): Shared library is missing " |
1054 | "debugging information.\n")); | |
c906108c SS |
1055 | } |
1056 | } | |
1057 | ||
5fd1a349 PP |
1058 | /* Return 1 if ADDRESS lies within SOLIB. */ |
1059 | ||
1060 | int | |
1061 | solib_contains_address_p (const struct so_list *const solib, | |
1062 | CORE_ADDR address) | |
1063 | { | |
0542c86d | 1064 | struct target_section *p; |
5fd1a349 PP |
1065 | |
1066 | for (p = solib->sections; p < solib->sections_end; p++) | |
1067 | if (p->addr <= address && address < p->endaddr) | |
1068 | return 1; | |
1069 | ||
1070 | return 0; | |
1071 | } | |
1072 | ||
7f86f058 PA |
1073 | /* If ADDRESS is in a shared lib in program space PSPACE, return its |
1074 | name. | |
c906108c | 1075 | |
7f86f058 PA |
1076 | Provides a hook for other gdb routines to discover whether or not a |
1077 | particular address is within the mapped address space of a shared | |
1078 | library. | |
c906108c | 1079 | |
c5aa993b JM |
1080 | For example, this routine is called at one point to disable |
1081 | breakpoints which are in shared libraries that are not currently | |
7f86f058 | 1082 | mapped in. */ |
c906108c SS |
1083 | |
1084 | char * | |
6c95b8df | 1085 | solib_name_from_address (struct program_space *pspace, CORE_ADDR address) |
c906108c | 1086 | { |
6c95b8df | 1087 | struct so_list *so = NULL; |
c5aa993b | 1088 | |
6c95b8df | 1089 | for (so = pspace->so_list; so; so = so->next) |
5fd1a349 PP |
1090 | if (solib_contains_address_p (so, address)) |
1091 | return (so->so_name); | |
07cd4b97 | 1092 | |
c906108c SS |
1093 | return (0); |
1094 | } | |
1095 | ||
de18c1d8 JM |
1096 | /* Return whether the data starting at VADDR, size SIZE, must be kept |
1097 | in a core file for shared libraries loaded before "gcore" is used | |
1098 | to be handled correctly when the core file is loaded. This only | |
1099 | applies when the section would otherwise not be kept in the core | |
1100 | file (in particular, for readonly sections). */ | |
1101 | ||
1102 | int | |
1103 | solib_keep_data_in_core (CORE_ADDR vaddr, unsigned long size) | |
1104 | { | |
1105 | struct target_so_ops *ops = solib_ops (target_gdbarch); | |
1106 | ||
1107 | if (ops->keep_data_in_core) | |
1108 | return ops->keep_data_in_core (vaddr, size); | |
1109 | else | |
1110 | return 0; | |
1111 | } | |
1112 | ||
c906108c SS |
1113 | /* Called by free_all_symtabs */ |
1114 | ||
c5aa993b | 1115 | void |
fba45db2 | 1116 | clear_solib (void) |
c906108c | 1117 | { |
1cf3db46 | 1118 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 1119 | |
085dd6e6 JM |
1120 | /* This function is expected to handle ELF shared libraries. It is |
1121 | also used on Solaris, which can run either ELF or a.out binaries | |
1122 | (for compatibility with SunOS 4), both of which can use shared | |
1123 | libraries. So we don't know whether we have an ELF executable or | |
1124 | an a.out executable until the user chooses an executable file. | |
1125 | ||
1126 | ELF shared libraries don't get mapped into the address space | |
1127 | until after the program starts, so we'd better not try to insert | |
1128 | breakpoints in them immediately. We have to wait until the | |
1129 | dynamic linker has loaded them; we'll hit a bp_shlib_event | |
1130 | breakpoint (look for calls to create_solib_event_breakpoint) when | |
1131 | it's ready. | |
1132 | ||
1133 | SunOS shared libraries seem to be different --- they're present | |
1134 | as soon as the process begins execution, so there's no need to | |
1135 | put off inserting breakpoints. There's also nowhere to put a | |
1136 | bp_shlib_event breakpoint, so if we put it off, we'll never get | |
1137 | around to it. | |
1138 | ||
1139 | So: disable breakpoints only if we're using ELF shared libs. */ | |
1140 | if (exec_bfd != NULL | |
1141 | && bfd_get_flavour (exec_bfd) != bfd_target_aout_flavour) | |
cb851954 | 1142 | disable_breakpoints_in_shlibs (); |
085dd6e6 | 1143 | |
c906108c SS |
1144 | while (so_list_head) |
1145 | { | |
07cd4b97 | 1146 | struct so_list *so = so_list_head; |
433759f7 | 1147 | |
07cd4b97 | 1148 | so_list_head = so->next; |
c86cf029 | 1149 | observer_notify_solib_unloaded (so); |
2069d78d KB |
1150 | if (so->abfd) |
1151 | remove_target_sections (so->abfd); | |
07cd4b97 | 1152 | free_so (so); |
c906108c | 1153 | } |
07cd4b97 | 1154 | |
66aba65d | 1155 | ops->clear_solib (); |
c906108c SS |
1156 | } |
1157 | ||
7f86f058 PA |
1158 | /* Shared library startup support. When GDB starts up the inferior, |
1159 | it nurses it along (through the shell) until it is ready to execute | |
1160 | its first instruction. At this point, this function gets | |
1161 | called. */ | |
c5aa993b JM |
1162 | |
1163 | void | |
268a4a75 | 1164 | solib_create_inferior_hook (int from_tty) |
c906108c | 1165 | { |
1cf3db46 | 1166 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
433759f7 | 1167 | |
268a4a75 | 1168 | ops->solib_create_inferior_hook (from_tty); |
c906108c SS |
1169 | } |
1170 | ||
7f86f058 PA |
1171 | /* Check to see if an address is in the dynamic loader's dynamic |
1172 | symbol resolution code. Return 1 if so, 0 otherwise. */ | |
d7fa2ae2 KB |
1173 | |
1174 | int | |
1175 | in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
1176 | { | |
1cf3db46 | 1177 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
433759f7 | 1178 | |
66aba65d | 1179 | return ops->in_dynsym_resolve_code (pc); |
d7fa2ae2 | 1180 | } |
c906108c | 1181 | |
7f86f058 | 1182 | /* Implements the "sharedlibrary" command. */ |
c906108c SS |
1183 | |
1184 | static void | |
fba45db2 | 1185 | sharedlibrary_command (char *args, int from_tty) |
c906108c SS |
1186 | { |
1187 | dont_repeat (); | |
990f9fe3 | 1188 | solib_add (args, from_tty, (struct target_ops *) 0, 1); |
c906108c SS |
1189 | } |
1190 | ||
7f86f058 | 1191 | /* Implements the command "nosharedlibrary", which discards symbols |
cb0ba49e MS |
1192 | that have been auto-loaded from shared libraries. Symbols from |
1193 | shared libraries that were added by explicit request of the user | |
1194 | are not discarded. Also called from remote.c. */ | |
1195 | ||
c60a7562 MS |
1196 | void |
1197 | no_shared_libraries (char *ignored, int from_tty) | |
1198 | { | |
a3247a22 PP |
1199 | /* The order of the two routines below is important: clear_solib notifies |
1200 | the solib_unloaded observers, and some of these observers might need | |
1201 | access to their associated objfiles. Therefore, we can not purge the | |
1202 | solibs' objfiles before clear_solib has been called. */ | |
1203 | ||
615b9dba | 1204 | clear_solib (); |
a3247a22 | 1205 | objfile_purge_solibs (); |
c60a7562 | 1206 | } |
c906108c | 1207 | |
a86988f2 PA |
1208 | /* Reload shared libraries, but avoid reloading the same symbol file |
1209 | we already have loaded. */ | |
1210 | ||
1211 | static void | |
1212 | reload_shared_libraries_1 (int from_tty) | |
1213 | { | |
1214 | struct so_list *so; | |
1215 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
1216 | ||
1217 | for (so = so_list_head; so != NULL; so = so->next) | |
1218 | { | |
1219 | char *filename, *found_pathname = NULL; | |
1220 | bfd *abfd; | |
a86988f2 PA |
1221 | int was_loaded = so->symbols_loaded; |
1222 | const int flags = | |
1223 | SYMFILE_DEFER_BP_RESET | (from_tty ? SYMFILE_VERBOSE : 0); | |
1224 | ||
1225 | filename = tilde_expand (so->so_original_name); | |
42b1321c | 1226 | make_cleanup (xfree, filename); |
a86988f2 PA |
1227 | abfd = solib_bfd_open (filename); |
1228 | if (abfd != NULL) | |
1229 | { | |
1230 | found_pathname = xstrdup (bfd_get_filename (abfd)); | |
1231 | make_cleanup (xfree, found_pathname); | |
1232 | gdb_bfd_close_or_warn (abfd); | |
1233 | } | |
1234 | ||
1235 | /* If this shared library is no longer associated with its previous | |
1236 | symbol file, close that. */ | |
1237 | if ((found_pathname == NULL && was_loaded) | |
1238 | || (found_pathname != NULL | |
0ba1096a | 1239 | && filename_cmp (found_pathname, so->so_name) != 0)) |
a86988f2 | 1240 | { |
59145f8c AR |
1241 | if (so->objfile && ! (so->objfile->flags & OBJF_USERLOADED) |
1242 | && !solib_used (so)) | |
a86988f2 PA |
1243 | free_objfile (so->objfile); |
1244 | remove_target_sections (so->abfd); | |
1245 | free_so_symbols (so); | |
1246 | } | |
1247 | ||
1248 | /* If this shared library is now associated with a new symbol | |
1249 | file, open it. */ | |
1250 | if (found_pathname != NULL | |
1251 | && (!was_loaded | |
0ba1096a | 1252 | || filename_cmp (found_pathname, so->so_name) != 0)) |
a86988f2 PA |
1253 | { |
1254 | volatile struct gdb_exception e; | |
1255 | ||
1256 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
1257 | solib_map_sections (so); | |
1258 | ||
1259 | if (e.reason < 0) | |
3e43a32a MS |
1260 | exception_fprintf (gdb_stderr, e, |
1261 | _("Error while mapping " | |
1262 | "shared library sections:\n")); | |
a86988f2 PA |
1263 | else if (auto_solib_add || was_loaded || libpthread_solib_p (so)) |
1264 | solib_read_symbols (so, flags); | |
1265 | } | |
1266 | } | |
1267 | ||
1268 | do_cleanups (old_chain); | |
1269 | } | |
1270 | ||
cf466558 | 1271 | static void |
f397e303 AC |
1272 | reload_shared_libraries (char *ignored, int from_tty, |
1273 | struct cmd_list_element *e) | |
cf466558 | 1274 | { |
a86988f2 PA |
1275 | struct target_so_ops *ops; |
1276 | ||
1277 | reload_shared_libraries_1 (from_tty); | |
1278 | ||
1279 | ops = solib_ops (target_gdbarch); | |
1280 | ||
c378eb4e | 1281 | /* Creating inferior hooks here has two purposes. First, if we reload |
c8fa6cdd VP |
1282 | shared libraries then the address of solib breakpoint we've computed |
1283 | previously might be no longer valid. For example, if we forgot to set | |
1284 | solib-absolute-prefix and are setting it right now, then the previous | |
1285 | breakpoint address is plain wrong. Second, installing solib hooks | |
1286 | also implicitly figures were ld.so is and loads symbols for it. | |
1287 | Absent this call, if we've just connected to a target and set | |
1288 | solib-absolute-prefix or solib-search-path, we'll lose all information | |
1289 | about ld.so. */ | |
1290 | if (target_has_execution) | |
1291 | { | |
a86988f2 PA |
1292 | /* Reset or free private data structures not associated with |
1293 | so_list entries. */ | |
1294 | ops->clear_solib (); | |
1295 | ||
1296 | /* Remove any previous solib event breakpoint. This is usually | |
1297 | done in common code, at breakpoint_init_inferior time, but | |
1298 | we're not really starting up the inferior here. */ | |
1299 | remove_solib_event_breakpoints (); | |
1300 | ||
c8fa6cdd VP |
1301 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
1302 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
1303 | #else | |
268a4a75 | 1304 | solib_create_inferior_hook (from_tty); |
c8fa6cdd VP |
1305 | #endif |
1306 | } | |
268a4a75 JK |
1307 | |
1308 | /* Sometimes the platform-specific hook loads initial shared | |
1309 | libraries, and sometimes it doesn't. If it doesn't FROM_TTY will be | |
1310 | incorrectly 0 but such solib targets should be fixed anyway. If we | |
1311 | made all the inferior hook methods consistent, this call could be | |
1312 | removed. Call it only after the solib target has been initialized by | |
1313 | solib_create_inferior_hook. */ | |
1314 | ||
1315 | solib_add (NULL, 0, NULL, auto_solib_add); | |
1316 | ||
a86988f2 PA |
1317 | breakpoint_re_set (); |
1318 | ||
1319 | /* We may have loaded or unloaded debug info for some (or all) | |
1320 | shared libraries. However, frames may still reference them. For | |
1321 | example, a frame's unwinder might still point at DWARF FDE | |
1322 | structures that are now freed. Also, getting new symbols may | |
1323 | change our opinion about what is frameless. */ | |
c8fa6cdd | 1324 | reinit_frame_cache (); |
a86988f2 PA |
1325 | |
1326 | ops->special_symbol_handling (); | |
cf466558 KB |
1327 | } |
1328 | ||
920d2a44 AC |
1329 | static void |
1330 | show_auto_solib_add (struct ui_file *file, int from_tty, | |
1331 | struct cmd_list_element *c, const char *value) | |
1332 | { | |
1333 | fprintf_filtered (file, _("Autoloading of shared library symbols is %s.\n"), | |
1334 | value); | |
1335 | } | |
1336 | ||
1337 | ||
3a40aaa0 UW |
1338 | /* Handler for library-specific lookup of global symbol NAME in OBJFILE. Call |
1339 | the library-specific handler if it is installed for the current target. */ | |
1340 | ||
1341 | struct symbol * | |
1342 | solib_global_lookup (const struct objfile *objfile, | |
1343 | const char *name, | |
21b556f4 | 1344 | const domain_enum domain) |
3a40aaa0 | 1345 | { |
1cf3db46 | 1346 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
3a40aaa0 | 1347 | |
e8a92f7b | 1348 | if (ops->lookup_lib_global_symbol != NULL) |
94af9270 | 1349 | return ops->lookup_lib_global_symbol (objfile, name, domain); |
3a40aaa0 UW |
1350 | return NULL; |
1351 | } | |
1352 | ||
cb457ae2 YQ |
1353 | /* Lookup the value for a specific symbol from dynamic symbol table. Look |
1354 | up symbol from ABFD. MATCH_SYM is a callback function to determine | |
1355 | whether to pick up a symbol. DATA is the input of this callback | |
1356 | function. Return NULL if symbol is not found. */ | |
1357 | ||
1358 | CORE_ADDR | |
1359 | gdb_bfd_lookup_symbol_from_symtab (bfd *abfd, | |
1360 | int (*match_sym) (asymbol *, void *), | |
1361 | void *data) | |
1362 | { | |
1363 | long storage_needed = bfd_get_symtab_upper_bound (abfd); | |
1364 | CORE_ADDR symaddr = 0; | |
1365 | ||
1366 | if (storage_needed > 0) | |
1367 | { | |
1368 | unsigned int i; | |
1369 | ||
1370 | asymbol **symbol_table = (asymbol **) xmalloc (storage_needed); | |
1371 | struct cleanup *back_to = make_cleanup (xfree, symbol_table); | |
1372 | unsigned int number_of_symbols = | |
1373 | bfd_canonicalize_symtab (abfd, symbol_table); | |
1374 | ||
1375 | for (i = 0; i < number_of_symbols; i++) | |
1376 | { | |
1377 | asymbol *sym = *symbol_table++; | |
1378 | ||
1379 | if (match_sym (sym, data)) | |
1380 | { | |
1381 | /* BFD symbols are section relative. */ | |
1382 | symaddr = sym->value + sym->section->vma; | |
1383 | break; | |
1384 | } | |
1385 | } | |
1386 | do_cleanups (back_to); | |
1387 | } | |
1388 | ||
1389 | return symaddr; | |
1390 | } | |
1391 | ||
1392 | /* Lookup the value for a specific symbol from symbol table. Look up symbol | |
1393 | from ABFD. MATCH_SYM is a callback function to determine whether to pick | |
1394 | up a symbol. DATA is the input of this callback function. Return NULL | |
1395 | if symbol is not found. */ | |
1396 | ||
1397 | static CORE_ADDR | |
1398 | bfd_lookup_symbol_from_dyn_symtab (bfd *abfd, | |
1399 | int (*match_sym) (asymbol *, void *), | |
1400 | void *data) | |
1401 | { | |
1402 | long storage_needed = bfd_get_dynamic_symtab_upper_bound (abfd); | |
1403 | CORE_ADDR symaddr = 0; | |
1404 | ||
1405 | if (storage_needed > 0) | |
1406 | { | |
1407 | unsigned int i; | |
1408 | asymbol **symbol_table = (asymbol **) xmalloc (storage_needed); | |
1409 | struct cleanup *back_to = make_cleanup (xfree, symbol_table); | |
1410 | unsigned int number_of_symbols = | |
1411 | bfd_canonicalize_dynamic_symtab (abfd, symbol_table); | |
1412 | ||
1413 | for (i = 0; i < number_of_symbols; i++) | |
1414 | { | |
1415 | asymbol *sym = *symbol_table++; | |
1416 | ||
1417 | if (match_sym (sym, data)) | |
1418 | { | |
1419 | /* BFD symbols are section relative. */ | |
1420 | symaddr = sym->value + sym->section->vma; | |
1421 | break; | |
1422 | } | |
1423 | } | |
1424 | do_cleanups (back_to); | |
1425 | } | |
1426 | return symaddr; | |
1427 | } | |
1428 | ||
1429 | /* Lookup the value for a specific symbol from symbol table and dynamic | |
1430 | symbol table. Look up symbol from ABFD. MATCH_SYM is a callback | |
1431 | function to determine whether to pick up a symbol. DATA is the | |
1432 | input of this callback function. Return NULL if symbol is not | |
1433 | found. */ | |
1434 | ||
1435 | CORE_ADDR | |
1436 | gdb_bfd_lookup_symbol (bfd *abfd, | |
1437 | int (*match_sym) (asymbol *, void *), | |
1438 | void *data) | |
1439 | { | |
1440 | CORE_ADDR symaddr = gdb_bfd_lookup_symbol_from_symtab (abfd, match_sym, data); | |
1441 | ||
1442 | /* On FreeBSD, the dynamic linker is stripped by default. So we'll | |
1443 | have to check the dynamic string table too. */ | |
1444 | if (symaddr == 0) | |
1445 | symaddr = bfd_lookup_symbol_from_dyn_symtab (abfd, match_sym, data); | |
1446 | ||
1447 | return symaddr; | |
1448 | } | |
3a40aaa0 | 1449 | |
a78f21af AC |
1450 | extern initialize_file_ftype _initialize_solib; /* -Wmissing-prototypes */ |
1451 | ||
c906108c | 1452 | void |
fba45db2 | 1453 | _initialize_solib (void) |
c906108c | 1454 | { |
66aba65d MK |
1455 | solib_data = gdbarch_data_register_pre_init (solib_init); |
1456 | ||
c906108c | 1457 | add_com ("sharedlibrary", class_files, sharedlibrary_command, |
1bedd215 | 1458 | _("Load shared object library symbols for files matching REGEXP.")); |
c5aa993b | 1459 | add_info ("sharedlibrary", info_sharedlibrary_command, |
1bedd215 | 1460 | _("Status of loaded shared object libraries.")); |
c60a7562 | 1461 | add_com ("nosharedlibrary", class_files, no_shared_libraries, |
1bedd215 | 1462 | _("Unload all shared object library symbols.")); |
c906108c | 1463 | |
5bf193a2 AC |
1464 | add_setshow_boolean_cmd ("auto-solib-add", class_support, |
1465 | &auto_solib_add, _("\ | |
1466 | Set autoloading of shared library symbols."), _("\ | |
1467 | Show autoloading of shared library symbols."), _("\ | |
b7209cb4 FF |
1468 | If \"on\", symbols from all shared object libraries will be loaded\n\ |
1469 | automatically when the inferior begins execution, when the dynamic linker\n\ | |
1470 | informs gdb that a new library has been loaded, or when attaching to the\n\ | |
3e43a32a MS |
1471 | inferior. Otherwise, symbols must be loaded manually, using \ |
1472 | `sharedlibrary'."), | |
5bf193a2 | 1473 | NULL, |
920d2a44 | 1474 | show_auto_solib_add, |
5bf193a2 | 1475 | &setlist, &showlist); |
c906108c | 1476 | |
f822c95b DJ |
1477 | add_setshow_filename_cmd ("sysroot", class_support, |
1478 | &gdb_sysroot, _("\ | |
1479 | Set an alternate system root."), _("\ | |
1480 | Show the current system root."), _("\ | |
1481 | The system root is used to load absolute shared library symbol files.\n\ | |
1482 | For other (relative) files, you can add directories using\n\ | |
1483 | `set solib-search-path'."), | |
f397e303 AC |
1484 | reload_shared_libraries, |
1485 | NULL, | |
1486 | &setlist, &showlist); | |
c906108c | 1487 | |
f822c95b DJ |
1488 | add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0, |
1489 | &setlist); | |
1490 | add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0, | |
1491 | &showlist); | |
030292b7 | 1492 | |
525226b5 AC |
1493 | add_setshow_optional_filename_cmd ("solib-search-path", class_support, |
1494 | &solib_search_path, _("\ | |
3e43a32a MS |
1495 | Set the search path for loading non-absolute shared library symbol files."), |
1496 | _("\ | |
1497 | Show the search path for loading non-absolute shared library symbol files."), | |
1498 | _("\ | |
1499 | This takes precedence over the environment variables \ | |
1500 | PATH and LD_LIBRARY_PATH."), | |
525226b5 | 1501 | reload_shared_libraries, |
920d2a44 | 1502 | show_solib_search_path, |
525226b5 | 1503 | &setlist, &showlist); |
c906108c | 1504 | } |