Commit | Line | Data |
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13437d4b | 1 | /* Handle shared libraries for GDB, the GNU Debugger. |
14a5e767 | 2 | |
ecd75fc8 | 3 | Copyright (C) 1990-2014 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> |
c906108c SS |
24 | #include "symtab.h" |
25 | #include "bfd.h" | |
26 | #include "symfile.h" | |
27 | #include "objfiles.h" | |
60250e8b | 28 | #include "exceptions.h" |
c906108c SS |
29 | #include "gdbcore.h" |
30 | #include "command.h" | |
31 | #include "target.h" | |
32 | #include "frame.h" | |
88987551 | 33 | #include "gdb_regex.h" |
c906108c SS |
34 | #include "inferior.h" |
35 | #include "environ.h" | |
36 | #include "language.h" | |
37 | #include "gdbcmd.h" | |
fa58ee11 | 38 | #include "completer.h" |
fe4e3eb8 | 39 | #include "filenames.h" /* for DOSish file names */ |
4646aa9d | 40 | #include "exec.h" |
13437d4b | 41 | #include "solist.h" |
84acb35a | 42 | #include "observer.h" |
dbda9972 | 43 | #include "readline/readline.h" |
f1838a98 | 44 | #include "remote.h" |
2c0b251b | 45 | #include "solib.h" |
55333a84 | 46 | #include "interps.h" |
ab38a727 | 47 | #include "filesystem.h" |
cbb099e8 | 48 | #include "gdb_bfd.h" |
614c279d | 49 | #include "filestuff.h" |
c906108c | 50 | |
66aba65d MK |
51 | /* Architecture-specific operations. */ |
52 | ||
53 | /* Per-architecture data key. */ | |
54 | static struct gdbarch_data *solib_data; | |
55 | ||
56 | static void * | |
57 | solib_init (struct obstack *obstack) | |
58 | { | |
59 | struct target_so_ops **ops; | |
60 | ||
61 | ops = OBSTACK_ZALLOC (obstack, struct target_so_ops *); | |
62 | *ops = current_target_so_ops; | |
63 | return ops; | |
64 | } | |
65 | ||
3641da11 | 66 | static const struct target_so_ops * |
66aba65d MK |
67 | solib_ops (struct gdbarch *gdbarch) |
68 | { | |
3641da11 | 69 | const struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data); |
433759f7 | 70 | |
66aba65d MK |
71 | return *ops; |
72 | } | |
7d522c90 DJ |
73 | |
74 | /* Set the solib operations for GDBARCH to NEW_OPS. */ | |
75 | ||
76 | void | |
3641da11 | 77 | set_solib_ops (struct gdbarch *gdbarch, const struct target_so_ops *new_ops) |
7d522c90 | 78 | { |
3641da11 | 79 | const struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data); |
433759f7 | 80 | |
7d522c90 DJ |
81 | *ops = new_ops; |
82 | } | |
66aba65d MK |
83 | \f |
84 | ||
13437d4b | 85 | /* external data declarations */ |
c906108c | 86 | |
7d522c90 DJ |
87 | /* FIXME: gdbarch needs to control this variable, or else every |
88 | configuration needs to call set_solib_ops. */ | |
13437d4b | 89 | struct target_so_ops *current_target_so_ops; |
23e04971 | 90 | |
6c95b8df PA |
91 | /* List of known shared objects */ |
92 | #define so_list_head current_program_space->so_list | |
23e04971 | 93 | |
c906108c SS |
94 | /* Local function prototypes */ |
95 | ||
c906108c SS |
96 | /* If non-empty, this is a search path for loading non-absolute shared library |
97 | symbol files. This takes precedence over the environment variables PATH | |
98 | and LD_LIBRARY_PATH. */ | |
99 | static char *solib_search_path = NULL; | |
920d2a44 AC |
100 | static void |
101 | show_solib_search_path (struct ui_file *file, int from_tty, | |
102 | struct cmd_list_element *c, const char *value) | |
103 | { | |
3e43a32a MS |
104 | fprintf_filtered (file, _("The search path for loading non-absolute " |
105 | "shared library symbol files is %s.\n"), | |
920d2a44 AC |
106 | value); |
107 | } | |
c906108c | 108 | |
ab38a727 PA |
109 | /* Same as HAVE_DOS_BASED_FILE_SYSTEM, but useable as an rvalue. */ |
110 | #if (HAVE_DOS_BASED_FILE_SYSTEM) | |
111 | # define DOS_BASED_FILE_SYSTEM 1 | |
112 | #else | |
113 | # define DOS_BASED_FILE_SYSTEM 0 | |
114 | #endif | |
115 | ||
7f86f058 PA |
116 | /* Returns the full pathname of the shared library file, or NULL if |
117 | not found. (The pathname is malloc'ed; it needs to be freed by the | |
118 | caller.) *FD is set to either -1 or an open file handle for the | |
119 | library. | |
e4f7b8c8 | 120 | |
f822c95b | 121 | Global variable GDB_SYSROOT is used as a prefix directory |
e4f7b8c8 MS |
122 | to search for shared libraries if they have an absolute path. |
123 | ||
124 | Global variable SOLIB_SEARCH_PATH is used as a prefix directory | |
125 | (or set of directories, as in LD_LIBRARY_PATH) to search for all | |
f822c95b | 126 | shared libraries if not found in GDB_SYSROOT. |
e4f7b8c8 | 127 | |
c8c18e65 | 128 | Search algorithm: |
f822c95b DJ |
129 | * If there is a gdb_sysroot and path is absolute: |
130 | * Search for gdb_sysroot/path. | |
c8c18e65 KW |
131 | * else |
132 | * Look for it literally (unmodified). | |
e4f7b8c8 | 133 | * Look in SOLIB_SEARCH_PATH. |
f43caff8 | 134 | * If available, use target defined search function. |
f822c95b | 135 | * If gdb_sysroot is NOT set, perform the following two searches: |
c8c18e65 KW |
136 | * Look in inferior's $PATH. |
137 | * Look in inferior's $LD_LIBRARY_PATH. | |
ab38a727 | 138 | * |
c8c18e65 | 139 | * The last check avoids doing this search when targetting remote |
f822c95b | 140 | * machines since gdb_sysroot will almost always be set. |
7f86f058 | 141 | */ |
e4f7b8c8 | 142 | |
572d275c UW |
143 | char * |
144 | solib_find (char *in_pathname, int *fd) | |
e4f7b8c8 | 145 | { |
3641da11 | 146 | const struct target_so_ops *ops = solib_ops (target_gdbarch ()); |
e4f7b8c8 MS |
147 | int found_file = -1; |
148 | char *temp_pathname = NULL; | |
f822c95b | 149 | int gdb_sysroot_is_empty; |
08105857 | 150 | const char *solib_symbols_extension |
f5656ead | 151 | = gdbarch_solib_symbols_extension (target_gdbarch ()); |
ab38a727 PA |
152 | const char *fskind = effective_target_file_system_kind (); |
153 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
154 | char *sysroot = NULL; | |
08105857 PA |
155 | |
156 | /* If solib_symbols_extension is set, replace the file's | |
157 | extension. */ | |
158 | if (solib_symbols_extension) | |
159 | { | |
160 | char *p = in_pathname + strlen (in_pathname); | |
433759f7 | 161 | |
08105857 PA |
162 | while (p > in_pathname && *p != '.') |
163 | p--; | |
164 | ||
165 | if (*p == '.') | |
166 | { | |
167 | char *new_pathname; | |
168 | ||
169 | new_pathname = alloca (p - in_pathname + 1 | |
170 | + strlen (solib_symbols_extension) + 1); | |
171 | memcpy (new_pathname, in_pathname, p - in_pathname + 1); | |
172 | strcpy (new_pathname + (p - in_pathname) + 1, | |
173 | solib_symbols_extension); | |
174 | ||
175 | in_pathname = new_pathname; | |
176 | } | |
177 | } | |
58dc52c3 | 178 | |
f822c95b | 179 | gdb_sysroot_is_empty = (gdb_sysroot == NULL || *gdb_sysroot == 0); |
e4f7b8c8 | 180 | |
ab38a727 | 181 | if (!gdb_sysroot_is_empty) |
e4f7b8c8 | 182 | { |
f822c95b | 183 | int prefix_len = strlen (gdb_sysroot); |
f1d10cfb AS |
184 | |
185 | /* Remove trailing slashes from absolute prefix. */ | |
186 | while (prefix_len > 0 | |
f822c95b | 187 | && IS_DIR_SEPARATOR (gdb_sysroot[prefix_len - 1])) |
f1d10cfb AS |
188 | prefix_len--; |
189 | ||
ab38a727 PA |
190 | sysroot = savestring (gdb_sysroot, prefix_len); |
191 | make_cleanup (xfree, sysroot); | |
192 | } | |
193 | ||
194 | /* If we're on a non-DOS-based system, backslashes won't be | |
195 | understood as directory separator, so, convert them to forward | |
196 | slashes, iff we're supposed to handle DOS-based file system | |
197 | semantics for target paths. */ | |
198 | if (!DOS_BASED_FILE_SYSTEM && fskind == file_system_kind_dos_based) | |
199 | { | |
200 | char *p; | |
201 | ||
202 | /* Avoid clobbering our input. */ | |
203 | p = alloca (strlen (in_pathname) + 1); | |
204 | strcpy (p, in_pathname); | |
205 | in_pathname = p; | |
206 | ||
207 | for (; *p; p++) | |
208 | { | |
209 | if (*p == '\\') | |
210 | *p = '/'; | |
211 | } | |
212 | } | |
213 | ||
214 | /* Note, we're interested in IS_TARGET_ABSOLUTE_PATH, not | |
215 | IS_ABSOLUTE_PATH. The latter is for host paths only, while | |
216 | IN_PATHNAME is a target path. For example, if we're supposed to | |
217 | be handling DOS-like semantics we want to consider a | |
218 | 'c:/foo/bar.dll' path as an absolute path, even on a Unix box. | |
219 | With such a path, before giving up on the sysroot, we'll try: | |
220 | ||
221 | 1st attempt, c:/foo/bar.dll ==> /sysroot/c:/foo/bar.dll | |
222 | 2nd attempt, c:/foo/bar.dll ==> /sysroot/c/foo/bar.dll | |
223 | 3rd attempt, c:/foo/bar.dll ==> /sysroot/foo/bar.dll | |
224 | */ | |
225 | ||
226 | if (!IS_TARGET_ABSOLUTE_PATH (fskind, in_pathname) || gdb_sysroot_is_empty) | |
227 | temp_pathname = xstrdup (in_pathname); | |
228 | else | |
229 | { | |
230 | int need_dir_separator; | |
231 | ||
3736004f PA |
232 | /* Concatenate the sysroot and the target reported filename. We |
233 | may need to glue them with a directory separator. Cases to | |
234 | consider: | |
235 | ||
236 | | sysroot | separator | in_pathname | | |
237 | |-----------------+-----------+----------------| | |
238 | | /some/dir | / | c:/foo/bar.dll | | |
239 | | /some/dir | | /foo/bar.dll | | |
240 | | remote: | | c:/foo/bar.dll | | |
241 | | remote: | | /foo/bar.dll | | |
242 | | remote:some/dir | / | c:/foo/bar.dll | | |
243 | | remote:some/dir | | /foo/bar.dll | | |
244 | ||
245 | IOW, we don't need to add a separator if IN_PATHNAME already | |
246 | has one, or when the the sysroot is exactly "remote:". | |
247 | There's no need to check for drive spec explicitly, as we only | |
248 | get here if IN_PATHNAME is considered an absolute path. */ | |
249 | need_dir_separator = !(IS_DIR_SEPARATOR (in_pathname[0]) | |
250 | || strcmp (REMOTE_SYSROOT_PREFIX, sysroot) == 0); | |
ab38a727 | 251 | |
f1d10cfb | 252 | /* Cat the prefixed pathname together. */ |
ab38a727 PA |
253 | temp_pathname = concat (sysroot, |
254 | need_dir_separator ? SLASH_STRING : "", | |
255 | in_pathname, (char *) NULL); | |
e4f7b8c8 MS |
256 | } |
257 | ||
f1838a98 UW |
258 | /* Handle remote files. */ |
259 | if (remote_filename_p (temp_pathname)) | |
260 | { | |
572d275c | 261 | *fd = -1; |
f748fb40 | 262 | do_cleanups (old_chain); |
ab38a727 | 263 | return temp_pathname; |
f1838a98 UW |
264 | } |
265 | ||
f1d10cfb | 266 | /* Now see if we can open it. */ |
614c279d | 267 | found_file = gdb_open_cloexec (temp_pathname, O_RDONLY | O_BINARY, 0); |
ab38a727 PA |
268 | if (found_file < 0) |
269 | xfree (temp_pathname); | |
270 | ||
271 | /* If the search in gdb_sysroot failed, and the path name has a | |
272 | drive spec (e.g, c:/foo), try stripping ':' from the drive spec, | |
273 | and retrying in the sysroot: | |
274 | c:/foo/bar.dll ==> /sysroot/c/foo/bar.dll. */ | |
f1d10cfb | 275 | |
ab38a727 PA |
276 | if (found_file < 0 |
277 | && !gdb_sysroot_is_empty | |
278 | && HAS_TARGET_DRIVE_SPEC (fskind, in_pathname)) | |
279 | { | |
280 | int need_dir_separator = !IS_DIR_SEPARATOR (in_pathname[2]); | |
281 | char *drive = savestring (in_pathname, 1); | |
282 | ||
283 | temp_pathname = concat (sysroot, | |
284 | SLASH_STRING, | |
285 | drive, | |
286 | need_dir_separator ? SLASH_STRING : "", | |
287 | in_pathname + 2, (char *) NULL); | |
288 | xfree (drive); | |
289 | ||
614c279d | 290 | found_file = gdb_open_cloexec (temp_pathname, O_RDONLY | O_BINARY, 0); |
ab38a727 PA |
291 | if (found_file < 0) |
292 | { | |
ab38a727 PA |
293 | xfree (temp_pathname); |
294 | ||
295 | /* If the search in gdb_sysroot still failed, try fully | |
296 | stripping the drive spec, and trying once more in the | |
297 | sysroot before giving up. | |
298 | ||
299 | c:/foo/bar.dll ==> /sysroot/foo/bar.dll. */ | |
300 | ||
301 | temp_pathname = concat (sysroot, | |
302 | need_dir_separator ? SLASH_STRING : "", | |
303 | in_pathname + 2, (char *) NULL); | |
304 | ||
614c279d | 305 | found_file = gdb_open_cloexec (temp_pathname, O_RDONLY | O_BINARY, 0); |
ab38a727 PA |
306 | if (found_file < 0) |
307 | xfree (temp_pathname); | |
308 | } | |
309 | } | |
0997b535 | 310 | |
ab38a727 PA |
311 | do_cleanups (old_chain); |
312 | ||
313 | /* We try to find the library in various ways. After each attempt, | |
314 | either found_file >= 0 and temp_pathname is a malloc'd string, or | |
315 | found_file < 0 and temp_pathname does not point to storage that | |
316 | needs to be freed. */ | |
317 | ||
318 | if (found_file < 0) | |
319 | temp_pathname = NULL; | |
320 | ||
f822c95b | 321 | /* If the search in gdb_sysroot failed, and the path name is |
ba5f0d88 OF |
322 | absolute at this point, make it relative. (openp will try and open the |
323 | file according to its absolute path otherwise, which is not what we want.) | |
324 | Affects subsequent searches for this solib. */ | |
ab38a727 | 325 | if (found_file < 0 && IS_TARGET_ABSOLUTE_PATH (fskind, in_pathname)) |
ba5f0d88 OF |
326 | { |
327 | /* First, get rid of any drive letters etc. */ | |
ab38a727 PA |
328 | while (!IS_TARGET_DIR_SEPARATOR (fskind, *in_pathname)) |
329 | in_pathname++; | |
ba5f0d88 OF |
330 | |
331 | /* Next, get rid of all leading dir separators. */ | |
ab38a727 PA |
332 | while (IS_TARGET_DIR_SEPARATOR (fskind, *in_pathname)) |
333 | in_pathname++; | |
ba5f0d88 | 334 | } |
ab38a727 | 335 | |
c8c18e65 | 336 | /* If not found, search the solib_search_path (if any). */ |
e4f7b8c8 | 337 | if (found_file < 0 && solib_search_path != NULL) |
492c0ab7 JK |
338 | found_file = openp (solib_search_path, |
339 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
fbdebf46 | 340 | in_pathname, O_RDONLY | O_BINARY, &temp_pathname); |
ab38a727 | 341 | |
ba5f0d88 OF |
342 | /* If not found, next search the solib_search_path (if any) for the basename |
343 | only (ignoring the path). This is to allow reading solibs from a path | |
344 | that differs from the opened path. */ | |
345 | if (found_file < 0 && solib_search_path != NULL) | |
492c0ab7 JK |
346 | found_file = openp (solib_search_path, |
347 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
ab38a727 PA |
348 | target_lbasename (fskind, in_pathname), |
349 | O_RDONLY | O_BINARY, &temp_pathname); | |
e4f7b8c8 | 350 | |
c378eb4e | 351 | /* If not found, try to use target supplied solib search method. */ |
66aba65d | 352 | if (found_file < 0 && ops->find_and_open_solib) |
637d6690 | 353 | found_file = ops->find_and_open_solib (in_pathname, O_RDONLY | O_BINARY, |
66aba65d | 354 | &temp_pathname); |
2610b0bf | 355 | |
c378eb4e | 356 | /* If not found, next search the inferior's $PATH environment variable. */ |
f822c95b | 357 | if (found_file < 0 && gdb_sysroot_is_empty) |
3f81c18a VP |
358 | found_file = openp (get_in_environ (current_inferior ()->environment, |
359 | "PATH"), | |
492c0ab7 JK |
360 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, in_pathname, |
361 | O_RDONLY | O_BINARY, &temp_pathname); | |
e4f7b8c8 | 362 | |
ab38a727 | 363 | /* If not found, next search the inferior's $LD_LIBRARY_PATH |
c378eb4e | 364 | environment variable. */ |
f822c95b | 365 | if (found_file < 0 && gdb_sysroot_is_empty) |
3f81c18a VP |
366 | found_file = openp (get_in_environ (current_inferior ()->environment, |
367 | "LD_LIBRARY_PATH"), | |
492c0ab7 JK |
368 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, in_pathname, |
369 | O_RDONLY | O_BINARY, &temp_pathname); | |
e4f7b8c8 | 370 | |
572d275c UW |
371 | *fd = found_file; |
372 | return temp_pathname; | |
373 | } | |
374 | ||
375 | /* Open and return a BFD for the shared library PATHNAME. If FD is not -1, | |
376 | it is used as file handle to open the file. Throws an error if the file | |
377 | could not be opened. Handles both local and remote file access. | |
378 | ||
a4453b7e TT |
379 | PATHNAME must be malloc'ed by the caller. It will be freed by this |
380 | function. If unsuccessful, the FD will be closed (unless FD was | |
381 | -1). */ | |
572d275c UW |
382 | |
383 | bfd * | |
384 | solib_bfd_fopen (char *pathname, int fd) | |
385 | { | |
386 | bfd *abfd; | |
387 | ||
388 | if (remote_filename_p (pathname)) | |
389 | { | |
390 | gdb_assert (fd == -1); | |
391 | abfd = remote_bfd_open (pathname, gnutarget); | |
392 | } | |
393 | else | |
394 | { | |
1c00ec6b | 395 | abfd = gdb_bfd_open (pathname, gnutarget, fd); |
572d275c UW |
396 | |
397 | if (abfd) | |
398 | bfd_set_cacheable (abfd, 1); | |
572d275c | 399 | } |
f1838a98 | 400 | |
f1838a98 UW |
401 | if (!abfd) |
402 | { | |
572d275c | 403 | make_cleanup (xfree, pathname); |
f1838a98 | 404 | error (_("Could not open `%s' as an executable file: %s"), |
572d275c | 405 | pathname, bfd_errmsg (bfd_get_error ())); |
f1838a98 UW |
406 | } |
407 | ||
a4453b7e TT |
408 | xfree (pathname); |
409 | ||
520b0001 | 410 | return abfd; |
572d275c UW |
411 | } |
412 | ||
413 | /* Find shared library PATHNAME and open a BFD for it. */ | |
414 | ||
415 | bfd * | |
416 | solib_bfd_open (char *pathname) | |
417 | { | |
572d275c UW |
418 | char *found_pathname; |
419 | int found_file; | |
420 | bfd *abfd; | |
378d2b72 | 421 | const struct bfd_arch_info *b; |
572d275c | 422 | |
572d275c UW |
423 | /* Search for shared library file. */ |
424 | found_pathname = solib_find (pathname, &found_file); | |
425 | if (found_pathname == NULL) | |
048d532d PA |
426 | { |
427 | /* Return failure if the file could not be found, so that we can | |
428 | accumulate messages about missing libraries. */ | |
429 | if (errno == ENOENT) | |
430 | return NULL; | |
431 | ||
432 | perror_with_name (pathname); | |
433 | } | |
572d275c UW |
434 | |
435 | /* Open bfd for shared library. */ | |
436 | abfd = solib_bfd_fopen (found_pathname, found_file); | |
437 | ||
438 | /* Check bfd format. */ | |
f1838a98 | 439 | if (!bfd_check_format (abfd, bfd_object)) |
0997b535 | 440 | { |
f9a062ff | 441 | make_cleanup_bfd_unref (abfd); |
f1838a98 | 442 | error (_("`%s': not in executable format: %s"), |
a4453b7e | 443 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
0997b535 | 444 | } |
f1838a98 | 445 | |
378d2b72 | 446 | /* Check bfd arch. */ |
f5656ead | 447 | b = gdbarch_bfd_arch_info (target_gdbarch ()); |
69e2bf17 | 448 | if (!b->compatible (b, bfd_get_arch_info (abfd))) |
378d2b72 | 449 | warning (_("`%s': Shared library architecture %s is not compatible " |
a4453b7e | 450 | "with target architecture %s."), bfd_get_filename (abfd), |
378d2b72 HZ |
451 | bfd_get_arch_info (abfd)->printable_name, b->printable_name); |
452 | ||
f1838a98 | 453 | return abfd; |
e4f7b8c8 MS |
454 | } |
455 | ||
7f86f058 PA |
456 | /* Given a pointer to one of the shared objects in our list of mapped |
457 | objects, use the recorded name to open a bfd descriptor for the | |
458 | object, build a section table, relocate all the section addresses | |
459 | by the base address at which the shared object was mapped, and then | |
460 | add the sections to the target's section table. | |
e4f7b8c8 | 461 | |
7f86f058 PA |
462 | FIXME: In most (all?) cases the shared object file name recorded in |
463 | the dynamic linkage tables will be a fully qualified pathname. For | |
c5aa993b JM |
464 | cases where it isn't, do we really mimic the systems search |
465 | mechanism correctly in the below code (particularly the tilde | |
7f86f058 | 466 | expansion stuff?). */ |
c906108c SS |
467 | |
468 | static int | |
048d532d | 469 | solib_map_sections (struct so_list *so) |
c906108c | 470 | { |
3641da11 | 471 | const struct target_so_ops *ops = solib_ops (target_gdbarch ()); |
c906108c | 472 | char *filename; |
0542c86d | 473 | struct target_section *p; |
c906108c SS |
474 | struct cleanup *old_chain; |
475 | bfd *abfd; | |
c5aa993b JM |
476 | |
477 | filename = tilde_expand (so->so_name); | |
b8c9b27d | 478 | old_chain = make_cleanup (xfree, filename); |
831a0c44 | 479 | abfd = ops->bfd_open (filename); |
f1838a98 | 480 | do_cleanups (old_chain); |
e4f7b8c8 | 481 | |
048d532d PA |
482 | if (abfd == NULL) |
483 | return 0; | |
484 | ||
13437d4b | 485 | /* Leave bfd open, core_xfer_memory and "info files" need it. */ |
cbb099e8 | 486 | so->abfd = abfd; |
23e04971 | 487 | |
b030cf11 JB |
488 | /* Copy the full path name into so_name, allowing symbol_file_add |
489 | to find it later. This also affects the =library-loaded GDB/MI | |
490 | event, and in particular the part of that notification providing | |
491 | the library's host-side path. If we let the target dictate | |
492 | that objfile's path, and the target is different from the host, | |
493 | GDB/MI will not provide the correct host-side path. */ | |
494 | if (strlen (bfd_get_filename (abfd)) >= SO_NAME_MAX_PATH_SIZE) | |
495 | error (_("Shared library file name is too long.")); | |
496 | strcpy (so->so_name, bfd_get_filename (abfd)); | |
497 | ||
13437d4b | 498 | if (build_section_table (abfd, &so->sections, &so->sections_end)) |
23e04971 | 499 | { |
8a3fe4f8 | 500 | error (_("Can't find the file sections in `%s': %s"), |
13437d4b | 501 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
23e04971 | 502 | } |
104c1213 | 503 | |
13437d4b | 504 | for (p = so->sections; p < so->sections_end; p++) |
104c1213 | 505 | { |
13437d4b KB |
506 | /* Relocate the section binding addresses as recorded in the shared |
507 | object's file by the base address to which the object was actually | |
c378eb4e | 508 | mapped. */ |
66aba65d | 509 | ops->relocate_section_addresses (so, p); |
cfa9d6d9 DJ |
510 | |
511 | /* If the target didn't provide information about the address | |
512 | range of the shared object, assume we want the location of | |
513 | the .text section. */ | |
514 | if (so->addr_low == 0 && so->addr_high == 0 | |
515 | && strcmp (p->the_bfd_section->name, ".text") == 0) | |
13437d4b | 516 | { |
cfa9d6d9 DJ |
517 | so->addr_low = p->addr; |
518 | so->addr_high = p->endaddr; | |
13437d4b | 519 | } |
104c1213 JM |
520 | } |
521 | ||
048d532d PA |
522 | /* Add the shared object's sections to the current set of file |
523 | section tables. Do this immediately after mapping the object so | |
524 | that later nodes in the list can query this object, as is needed | |
525 | in solib-osf.c. */ | |
ed9eebaf | 526 | add_target_sections (so, so->sections, so->sections_end); |
048d532d PA |
527 | |
528 | return 1; | |
104c1213 | 529 | } |
c906108c | 530 | |
0892cb63 DE |
531 | /* Free symbol-file related contents of SO and reset for possible reloading |
532 | of SO. If we have opened a BFD for SO, close it. If we have placed SO's | |
533 | sections in some target's section table, the caller is responsible for | |
534 | removing them. | |
a86988f2 PA |
535 | |
536 | This function doesn't mess with objfiles at all. If there is an | |
537 | objfile associated with SO that needs to be removed, the caller is | |
538 | responsible for taking care of that. */ | |
539 | ||
540 | static void | |
0892cb63 | 541 | clear_so (struct so_list *so) |
a86988f2 | 542 | { |
3641da11 | 543 | const struct target_so_ops *ops = solib_ops (target_gdbarch ()); |
0892cb63 | 544 | |
a86988f2 PA |
545 | if (so->sections) |
546 | { | |
547 | xfree (so->sections); | |
548 | so->sections = so->sections_end = NULL; | |
549 | } | |
550 | ||
551 | gdb_bfd_unref (so->abfd); | |
552 | so->abfd = NULL; | |
553 | ||
554 | /* Our caller closed the objfile, possibly via objfile_purge_solibs. */ | |
555 | so->symbols_loaded = 0; | |
556 | so->objfile = NULL; | |
557 | ||
558 | so->addr_low = so->addr_high = 0; | |
559 | ||
560 | /* Restore the target-supplied file name. SO_NAME may be the path | |
561 | of the symbol file. */ | |
562 | strcpy (so->so_name, so->so_original_name); | |
0892cb63 DE |
563 | |
564 | /* Do the same for target-specific data. */ | |
565 | if (ops->clear_so != NULL) | |
566 | ops->clear_so (so); | |
a86988f2 PA |
567 | } |
568 | ||
7f86f058 | 569 | /* Free the storage associated with the `struct so_list' object SO. |
c378eb4e | 570 | If we have opened a BFD for SO, close it. |
c906108c | 571 | |
07cd4b97 JB |
572 | The caller is responsible for removing SO from whatever list it is |
573 | a member of. If we have placed SO's sections in some target's | |
574 | section table, the caller is responsible for removing them. | |
c906108c | 575 | |
07cd4b97 JB |
576 | This function doesn't mess with objfiles at all. If there is an |
577 | objfile associated with SO that needs to be removed, the caller is | |
578 | responsible for taking care of that. */ | |
579 | ||
13437d4b | 580 | void |
07cd4b97 | 581 | free_so (struct so_list *so) |
c906108c | 582 | { |
3641da11 | 583 | const struct target_so_ops *ops = solib_ops (target_gdbarch ()); |
c5aa993b | 584 | |
0892cb63 | 585 | clear_so (so); |
66aba65d | 586 | ops->free_so (so); |
07cd4b97 | 587 | |
b8c9b27d | 588 | xfree (so); |
c906108c SS |
589 | } |
590 | ||
07cd4b97 | 591 | |
f8766ec1 KB |
592 | /* Return address of first so_list entry in master shared object list. */ |
593 | struct so_list * | |
594 | master_so_list (void) | |
595 | { | |
596 | return so_list_head; | |
597 | } | |
598 | ||
7eedccfa PP |
599 | /* Read in symbols for shared object SO. If SYMFILE_VERBOSE is set in FLAGS, |
600 | be chatty about it. Return non-zero if any symbols were actually | |
42a6e6a0 MK |
601 | loaded. */ |
602 | ||
603 | int | |
7eedccfa | 604 | solib_read_symbols (struct so_list *so, int flags) |
42a6e6a0 MK |
605 | { |
606 | if (so->symbols_loaded) | |
607 | { | |
a86988f2 | 608 | /* If needed, we've already warned in our caller. */ |
42a6e6a0 | 609 | } |
8bb75286 DJ |
610 | else if (so->abfd == NULL) |
611 | { | |
048d532d PA |
612 | /* We've already warned about this library, when trying to open |
613 | it. */ | |
8bb75286 | 614 | } |
42a6e6a0 MK |
615 | else |
616 | { | |
048d532d PA |
617 | volatile struct gdb_exception e; |
618 | ||
7dcd53a0 TT |
619 | flags |= current_inferior ()->symfile_flags; |
620 | ||
048d532d PA |
621 | TRY_CATCH (e, RETURN_MASK_ERROR) |
622 | { | |
623 | struct section_addr_info *sap; | |
624 | ||
625 | /* Have we already loaded this shared object? */ | |
626 | ALL_OBJFILES (so->objfile) | |
627 | { | |
4262abfb | 628 | if (filename_cmp (objfile_name (so->objfile), so->so_name) == 0 |
e4f6d2ec | 629 | && so->objfile->addr_low == so->addr_low) |
048d532d PA |
630 | break; |
631 | } | |
632 | if (so->objfile != NULL) | |
633 | break; | |
634 | ||
635 | sap = build_section_addr_info_from_section_table (so->sections, | |
636 | so->sections_end); | |
24ba069a | 637 | so->objfile = symbol_file_add_from_bfd (so->abfd, so->so_name, |
63524580 JK |
638 | flags, sap, OBJF_SHARED, |
639 | NULL); | |
e4f6d2ec | 640 | so->objfile->addr_low = so->addr_low; |
048d532d PA |
641 | free_section_addr_info (sap); |
642 | } | |
643 | ||
644 | if (e.reason < 0) | |
14ad3217 JK |
645 | exception_fprintf (gdb_stderr, e, _("Error while reading shared" |
646 | " library symbols for %s:\n"), | |
647 | so->so_name); | |
048d532d | 648 | else |
d769e349 | 649 | so->symbols_loaded = 1; |
7eedccfa | 650 | return 1; |
42a6e6a0 MK |
651 | } |
652 | ||
653 | return 0; | |
654 | } | |
c906108c | 655 | |
59145f8c AR |
656 | /* Return 1 if KNOWN->objfile is used by any other so_list object in the |
657 | SO_LIST_HEAD list. Return 0 otherwise. */ | |
658 | ||
659 | static int | |
660 | solib_used (const struct so_list *const known) | |
661 | { | |
662 | const struct so_list *pivot; | |
663 | ||
664 | for (pivot = so_list_head; pivot != NULL; pivot = pivot->next) | |
665 | if (pivot != known && pivot->objfile == known->objfile) | |
666 | return 1; | |
667 | return 0; | |
668 | } | |
669 | ||
7f86f058 | 670 | /* Synchronize GDB's shared object list with inferior's. |
c906108c | 671 | |
07cd4b97 | 672 | Extract the list of currently loaded shared objects from the |
105b175f JB |
673 | inferior, and compare it with the list of shared objects currently |
674 | in GDB's so_list_head list. Edit so_list_head to bring it in sync | |
675 | with the inferior's new list. | |
c906108c | 676 | |
105b175f JB |
677 | If we notice that the inferior has unloaded some shared objects, |
678 | free any symbolic info GDB had read about those shared objects. | |
679 | ||
680 | Don't load symbolic info for any new shared objects; just add them | |
681 | to the list, and leave their symbols_loaded flag clear. | |
07cd4b97 JB |
682 | |
683 | If FROM_TTY is non-null, feel free to print messages about what | |
684 | we're doing. | |
c906108c | 685 | |
07cd4b97 JB |
686 | If TARGET is non-null, add the sections of all new shared objects |
687 | to TARGET's section table. Note that this doesn't remove any | |
688 | sections for shared objects that have been unloaded, and it | |
689 | doesn't check to see if the new shared objects are already present in | |
690 | the section table. But we only use this for core files and | |
691 | processes we've just attached to, so that's okay. */ | |
c906108c | 692 | |
a78f21af | 693 | static void |
105b175f | 694 | update_solib_list (int from_tty, struct target_ops *target) |
07cd4b97 | 695 | { |
3641da11 | 696 | const struct target_so_ops *ops = solib_ops (target_gdbarch ()); |
66aba65d | 697 | struct so_list *inferior = ops->current_sos(); |
07cd4b97 JB |
698 | struct so_list *gdb, **gdb_link; |
699 | ||
181e7f93 PA |
700 | /* We can reach here due to changing solib-search-path or the |
701 | sysroot, before having any inferior. */ | |
50c71eaf | 702 | if (target_has_execution && !ptid_equal (inferior_ptid, null_ptid)) |
181e7f93 PA |
703 | { |
704 | struct inferior *inf = current_inferior (); | |
705 | ||
706 | /* If we are attaching to a running process for which we | |
707 | have not opened a symbol file, we may be able to get its | |
708 | symbols now! */ | |
709 | if (inf->attach_flag && symfile_objfile == NULL) | |
710 | catch_errors (ops->open_symbol_file_object, &from_tty, | |
711 | "Error reading attached process's symbol file.\n", | |
712 | RETURN_MASK_ALL); | |
713 | } | |
104c1213 | 714 | |
07cd4b97 JB |
715 | /* GDB and the inferior's dynamic linker each maintain their own |
716 | list of currently loaded shared objects; we want to bring the | |
717 | former in sync with the latter. Scan both lists, seeing which | |
718 | shared objects appear where. There are three cases: | |
719 | ||
720 | - A shared object appears on both lists. This means that GDB | |
105b175f JB |
721 | knows about it already, and it's still loaded in the inferior. |
722 | Nothing needs to happen. | |
07cd4b97 JB |
723 | |
724 | - A shared object appears only on GDB's list. This means that | |
105b175f JB |
725 | the inferior has unloaded it. We should remove the shared |
726 | object from GDB's tables. | |
07cd4b97 JB |
727 | |
728 | - A shared object appears only on the inferior's list. This | |
105b175f JB |
729 | means that it's just been loaded. We should add it to GDB's |
730 | tables. | |
07cd4b97 JB |
731 | |
732 | So we walk GDB's list, checking each entry to see if it appears | |
733 | in the inferior's list too. If it does, no action is needed, and | |
734 | we remove it from the inferior's list. If it doesn't, the | |
735 | inferior has unloaded it, and we remove it from GDB's list. By | |
736 | the time we're done walking GDB's list, the inferior's list | |
737 | contains only the new shared objects, which we then add. */ | |
738 | ||
739 | gdb = so_list_head; | |
740 | gdb_link = &so_list_head; | |
741 | while (gdb) | |
c906108c | 742 | { |
07cd4b97 JB |
743 | struct so_list *i = inferior; |
744 | struct so_list **i_link = &inferior; | |
745 | ||
746 | /* Check to see whether the shared object *gdb also appears in | |
747 | the inferior's current list. */ | |
748 | while (i) | |
c906108c | 749 | { |
a7c02bc8 VP |
750 | if (ops->same) |
751 | { | |
752 | if (ops->same (gdb, i)) | |
753 | break; | |
754 | } | |
755 | else | |
756 | { | |
0ba1096a | 757 | if (! filename_cmp (gdb->so_original_name, i->so_original_name)) |
a7c02bc8 VP |
758 | break; |
759 | } | |
07cd4b97 JB |
760 | |
761 | i_link = &i->next; | |
762 | i = *i_link; | |
c906108c | 763 | } |
c5aa993b | 764 | |
07cd4b97 JB |
765 | /* If the shared object appears on the inferior's list too, then |
766 | it's still loaded, so we don't need to do anything. Delete | |
767 | it from the inferior's list, and leave it on GDB's list. */ | |
768 | if (i) | |
c906108c | 769 | { |
07cd4b97 | 770 | *i_link = i->next; |
07cd4b97 JB |
771 | free_so (i); |
772 | gdb_link = &gdb->next; | |
773 | gdb = *gdb_link; | |
774 | } | |
775 | ||
776 | /* If it's not on the inferior's list, remove it from GDB's tables. */ | |
777 | else | |
778 | { | |
42a6e6a0 MK |
779 | /* Notify any observer that the shared object has been |
780 | unloaded before we remove it from GDB's tables. */ | |
84acb35a JJ |
781 | observer_notify_solib_unloaded (gdb); |
782 | ||
edcc5120 TT |
783 | VEC_safe_push (char_ptr, current_program_space->deleted_solibs, |
784 | xstrdup (gdb->so_name)); | |
785 | ||
07cd4b97 | 786 | *gdb_link = gdb->next; |
07cd4b97 JB |
787 | |
788 | /* Unless the user loaded it explicitly, free SO's objfile. */ | |
59145f8c AR |
789 | if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED) |
790 | && !solib_used (gdb)) | |
07cd4b97 JB |
791 | free_objfile (gdb->objfile); |
792 | ||
793 | /* Some targets' section tables might be referring to | |
794 | sections from so->abfd; remove them. */ | |
046ac79f | 795 | remove_target_sections (gdb); |
07cd4b97 JB |
796 | |
797 | free_so (gdb); | |
798 | gdb = *gdb_link; | |
c906108c SS |
799 | } |
800 | } | |
c5aa993b | 801 | |
07cd4b97 JB |
802 | /* Now the inferior's list contains only shared objects that don't |
803 | appear in GDB's list --- those that are newly loaded. Add them | |
e8930304 | 804 | to GDB's shared object list. */ |
07cd4b97 | 805 | if (inferior) |
c906108c | 806 | { |
048d532d PA |
807 | int not_found = 0; |
808 | const char *not_found_filename = NULL; | |
809 | ||
07cd4b97 JB |
810 | struct so_list *i; |
811 | ||
812 | /* Add the new shared objects to GDB's list. */ | |
813 | *gdb_link = inferior; | |
814 | ||
e8930304 | 815 | /* Fill in the rest of each of the `struct so_list' nodes. */ |
07cd4b97 | 816 | for (i = inferior; i; i = i->next) |
c906108c | 817 | { |
048d532d PA |
818 | volatile struct gdb_exception e; |
819 | ||
6c95b8df | 820 | i->pspace = current_program_space; |
edcc5120 | 821 | VEC_safe_push (so_list_ptr, current_program_space->added_solibs, i); |
07cd4b97 | 822 | |
048d532d PA |
823 | TRY_CATCH (e, RETURN_MASK_ERROR) |
824 | { | |
825 | /* Fill in the rest of the `struct so_list' node. */ | |
826 | if (!solib_map_sections (i)) | |
827 | { | |
828 | not_found++; | |
829 | if (not_found_filename == NULL) | |
830 | not_found_filename = i->so_original_name; | |
831 | } | |
832 | } | |
07cd4b97 | 833 | |
048d532d | 834 | if (e.reason < 0) |
3e43a32a MS |
835 | exception_fprintf (gdb_stderr, e, |
836 | _("Error while mapping shared " | |
837 | "library sections:\n")); | |
42a6e6a0 MK |
838 | |
839 | /* Notify any observer that the shared object has been | |
048d532d | 840 | loaded now that we've added it to GDB's tables. */ |
42a6e6a0 | 841 | observer_notify_solib_loaded (i); |
c906108c | 842 | } |
048d532d PA |
843 | |
844 | /* If a library was not found, issue an appropriate warning | |
845 | message. We have to use a single call to warning in case the | |
846 | front end does something special with warnings, e.g., pop up | |
847 | a dialog box. It Would Be Nice if we could get a "warning: " | |
848 | prefix on each line in the CLI front end, though - it doesn't | |
849 | stand out well. */ | |
850 | ||
851 | if (not_found == 1) | |
3e43a32a MS |
852 | warning (_("Could not load shared library symbols for %s.\n" |
853 | "Do you need \"set solib-search-path\" " | |
854 | "or \"set sysroot\"?"), | |
048d532d PA |
855 | not_found_filename); |
856 | else if (not_found > 1) | |
857 | warning (_("\ | |
858 | Could not load shared library symbols for %d libraries, e.g. %s.\n\ | |
859 | Use the \"info sharedlibrary\" command to see the complete listing.\n\ | |
860 | Do you need \"set solib-search-path\" or \"set sysroot\"?"), | |
861 | not_found, not_found_filename); | |
e8930304 | 862 | } |
105b175f JB |
863 | } |
864 | ||
17a37d48 PP |
865 | |
866 | /* Return non-zero if NAME is the libpthread shared library. | |
6612ad7f JB |
867 | |
868 | Uses a fairly simplistic heuristic approach where we check | |
869 | the file name against "/libpthread". This can lead to false | |
870 | positives, but this should be good enough in practice. */ | |
871 | ||
17a37d48 PP |
872 | int |
873 | libpthread_name_p (const char *name) | |
874 | { | |
875 | return (strstr (name, "/libpthread") != NULL); | |
876 | } | |
877 | ||
878 | /* Return non-zero if SO is the libpthread shared library. */ | |
879 | ||
6612ad7f JB |
880 | static int |
881 | libpthread_solib_p (struct so_list *so) | |
882 | { | |
17a37d48 | 883 | return libpthread_name_p (so->so_name); |
6612ad7f | 884 | } |
105b175f | 885 | |
7f86f058 | 886 | /* Read in symbolic information for any shared objects whose names |
105b175f JB |
887 | match PATTERN. (If we've already read a shared object's symbol |
888 | info, leave it alone.) If PATTERN is zero, read them all. | |
889 | ||
990f9fe3 FF |
890 | If READSYMS is 0, defer reading symbolic information until later |
891 | but still do any needed low level processing. | |
892 | ||
105b175f JB |
893 | FROM_TTY and TARGET are as described for update_solib_list, above. */ |
894 | ||
895 | void | |
414842dc | 896 | solib_add (const char *pattern, int from_tty, |
3e43a32a | 897 | struct target_ops *target, int readsyms) |
105b175f JB |
898 | { |
899 | struct so_list *gdb; | |
900 | ||
770e7fc7 DE |
901 | if (print_symbol_loading_p (from_tty, 0, 0)) |
902 | { | |
903 | if (pattern != NULL) | |
904 | { | |
905 | printf_unfiltered (_("Loading symbols for shared libraries: %s\n"), | |
906 | pattern); | |
907 | } | |
908 | else | |
909 | printf_unfiltered (_("Loading symbols for shared libraries.\n")); | |
910 | } | |
911 | ||
2eff07b3 PP |
912 | current_program_space->solib_add_generation++; |
913 | ||
105b175f JB |
914 | if (pattern) |
915 | { | |
916 | char *re_err = re_comp (pattern); | |
917 | ||
918 | if (re_err) | |
8a3fe4f8 | 919 | error (_("Invalid regexp: %s"), re_err); |
105b175f JB |
920 | } |
921 | ||
922 | update_solib_list (from_tty, target); | |
c906108c | 923 | |
105b175f JB |
924 | /* Walk the list of currently loaded shared libraries, and read |
925 | symbols for any that match the pattern --- or any whose symbols | |
926 | aren't already loaded, if no pattern was given. */ | |
e8930304 JB |
927 | { |
928 | int any_matches = 0; | |
929 | int loaded_any_symbols = 0; | |
7eedccfa PP |
930 | const int flags = |
931 | SYMFILE_DEFER_BP_RESET | (from_tty ? SYMFILE_VERBOSE : 0); | |
c906108c | 932 | |
e8930304 JB |
933 | for (gdb = so_list_head; gdb; gdb = gdb->next) |
934 | if (! pattern || re_exec (gdb->so_name)) | |
935 | { | |
6612ad7f JB |
936 | /* Normally, we would read the symbols from that library |
937 | only if READSYMS is set. However, we're making a small | |
938 | exception for the pthread library, because we sometimes | |
939 | need the library symbols to be loaded in order to provide | |
940 | thread support (x86-linux for instance). */ | |
941 | const int add_this_solib = | |
942 | (readsyms || libpthread_solib_p (gdb)); | |
943 | ||
e8930304 | 944 | any_matches = 1; |
a86988f2 PA |
945 | if (add_this_solib) |
946 | { | |
947 | if (gdb->symbols_loaded) | |
948 | { | |
949 | /* If no pattern was given, be quiet for shared | |
950 | libraries we have already loaded. */ | |
951 | if (pattern && (from_tty || info_verbose)) | |
952 | printf_unfiltered (_("Symbols already loaded for %s\n"), | |
953 | gdb->so_name); | |
954 | } | |
955 | else if (solib_read_symbols (gdb, flags)) | |
956 | loaded_any_symbols = 1; | |
957 | } | |
e8930304 JB |
958 | } |
959 | ||
7eedccfa PP |
960 | if (loaded_any_symbols) |
961 | breakpoint_re_set (); | |
962 | ||
e8930304 JB |
963 | if (from_tty && pattern && ! any_matches) |
964 | printf_unfiltered | |
965 | ("No loaded shared libraries match the pattern `%s'.\n", pattern); | |
966 | ||
967 | if (loaded_any_symbols) | |
968 | { | |
3641da11 | 969 | const struct target_so_ops *ops = solib_ops (target_gdbarch ()); |
66aba65d | 970 | |
e8930304 JB |
971 | /* Getting new symbols may change our opinion about what is |
972 | frameless. */ | |
973 | reinit_frame_cache (); | |
974 | ||
66aba65d | 975 | ops->special_symbol_handling (); |
e8930304 JB |
976 | } |
977 | } | |
c906108c SS |
978 | } |
979 | ||
7f86f058 PA |
980 | /* Implement the "info sharedlibrary" command. Walk through the |
981 | shared library list and print information about each attached | |
982 | library matching PATTERN. If PATTERN is elided, print them | |
983 | all. */ | |
c906108c SS |
984 | |
985 | static void | |
55333a84 | 986 | info_sharedlibrary_command (char *pattern, int from_tty) |
c906108c | 987 | { |
52f0bd74 | 988 | struct so_list *so = NULL; /* link map state variable */ |
55333a84 | 989 | int so_missing_debug_info = 0; |
c906108c | 990 | int addr_width; |
55333a84 DE |
991 | int nr_libs; |
992 | struct cleanup *table_cleanup; | |
f5656ead | 993 | struct gdbarch *gdbarch = target_gdbarch (); |
79a45e25 | 994 | struct ui_out *uiout = current_uiout; |
55333a84 DE |
995 | |
996 | if (pattern) | |
997 | { | |
998 | char *re_err = re_comp (pattern); | |
999 | ||
1000 | if (re_err) | |
1001 | error (_("Invalid regexp: %s"), re_err); | |
1002 | } | |
c906108c | 1003 | |
84eb3c4f | 1004 | /* "0x", a little whitespace, and two hex digits per byte of pointers. */ |
55333a84 | 1005 | addr_width = 4 + (gdbarch_ptr_bit (gdbarch) / 4); |
c906108c | 1006 | |
105b175f | 1007 | update_solib_list (from_tty, 0); |
07cd4b97 | 1008 | |
55333a84 DE |
1009 | /* make_cleanup_ui_out_table_begin_end needs to know the number of |
1010 | rows, so we need to make two passes over the libs. */ | |
1011 | ||
1012 | for (nr_libs = 0, so = so_list_head; so; so = so->next) | |
c906108c | 1013 | { |
c5aa993b | 1014 | if (so->so_name[0]) |
c906108c | 1015 | { |
55333a84 DE |
1016 | if (pattern && ! re_exec (so->so_name)) |
1017 | continue; | |
1018 | ++nr_libs; | |
1019 | } | |
1020 | } | |
1021 | ||
1022 | table_cleanup = | |
1023 | make_cleanup_ui_out_table_begin_end (uiout, 4, nr_libs, | |
1024 | "SharedLibraryTable"); | |
1025 | ||
1026 | /* The "- 1" is because ui_out adds one space between columns. */ | |
1027 | ui_out_table_header (uiout, addr_width - 1, ui_left, "from", "From"); | |
1028 | ui_out_table_header (uiout, addr_width - 1, ui_left, "to", "To"); | |
1029 | ui_out_table_header (uiout, 12 - 1, ui_left, "syms-read", "Syms Read"); | |
1030 | ui_out_table_header (uiout, 0, ui_noalign, | |
1031 | "name", "Shared Object Library"); | |
1032 | ||
1033 | ui_out_table_body (uiout); | |
1034 | ||
1035 | for (so = so_list_head; so; so = so->next) | |
1036 | { | |
1037 | struct cleanup *lib_cleanup; | |
c906108c | 1038 | |
55333a84 DE |
1039 | if (! so->so_name[0]) |
1040 | continue; | |
1041 | if (pattern && ! re_exec (so->so_name)) | |
1042 | continue; | |
1043 | ||
1044 | lib_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, "lib"); | |
1045 | ||
1046 | if (so->addr_high != 0) | |
1047 | { | |
1048 | ui_out_field_core_addr (uiout, "from", gdbarch, so->addr_low); | |
1049 | ui_out_field_core_addr (uiout, "to", gdbarch, so->addr_high); | |
1050 | } | |
1051 | else | |
1052 | { | |
1053 | ui_out_field_skip (uiout, "from"); | |
1054 | ui_out_field_skip (uiout, "to"); | |
c906108c | 1055 | } |
55333a84 DE |
1056 | |
1057 | if (! ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ())) | |
1058 | && so->symbols_loaded | |
e0ae4240 | 1059 | && !objfile_has_symbols (so->objfile)) |
55333a84 DE |
1060 | { |
1061 | so_missing_debug_info = 1; | |
1062 | ui_out_field_string (uiout, "syms-read", "Yes (*)"); | |
1063 | } | |
1064 | else | |
1065 | ui_out_field_string (uiout, "syms-read", | |
1066 | so->symbols_loaded ? "Yes" : "No"); | |
1067 | ||
1068 | ui_out_field_string (uiout, "name", so->so_name); | |
1069 | ||
1070 | ui_out_text (uiout, "\n"); | |
1071 | ||
1072 | do_cleanups (lib_cleanup); | |
c906108c | 1073 | } |
55333a84 DE |
1074 | |
1075 | do_cleanups (table_cleanup); | |
1076 | ||
1077 | if (nr_libs == 0) | |
1078 | { | |
1079 | if (pattern) | |
1080 | ui_out_message (uiout, 0, | |
1081 | _("No shared libraries matched.\n")); | |
1082 | else | |
1083 | ui_out_message (uiout, 0, | |
1084 | _("No shared libraries loaded at this time.\n")); | |
1085 | } | |
1086 | else | |
c906108c | 1087 | { |
55333a84 DE |
1088 | if (so_missing_debug_info) |
1089 | ui_out_message (uiout, 0, | |
3e43a32a MS |
1090 | _("(*): Shared library is missing " |
1091 | "debugging information.\n")); | |
c906108c SS |
1092 | } |
1093 | } | |
1094 | ||
5fd1a349 PP |
1095 | /* Return 1 if ADDRESS lies within SOLIB. */ |
1096 | ||
1097 | int | |
1098 | solib_contains_address_p (const struct so_list *const solib, | |
1099 | CORE_ADDR address) | |
1100 | { | |
0542c86d | 1101 | struct target_section *p; |
5fd1a349 PP |
1102 | |
1103 | for (p = solib->sections; p < solib->sections_end; p++) | |
1104 | if (p->addr <= address && address < p->endaddr) | |
1105 | return 1; | |
1106 | ||
1107 | return 0; | |
1108 | } | |
1109 | ||
7f86f058 PA |
1110 | /* If ADDRESS is in a shared lib in program space PSPACE, return its |
1111 | name. | |
c906108c | 1112 | |
7f86f058 PA |
1113 | Provides a hook for other gdb routines to discover whether or not a |
1114 | particular address is within the mapped address space of a shared | |
1115 | library. | |
c906108c | 1116 | |
c5aa993b JM |
1117 | For example, this routine is called at one point to disable |
1118 | breakpoints which are in shared libraries that are not currently | |
7f86f058 | 1119 | mapped in. */ |
c906108c SS |
1120 | |
1121 | char * | |
6c95b8df | 1122 | solib_name_from_address (struct program_space *pspace, CORE_ADDR address) |
c906108c | 1123 | { |
6c95b8df | 1124 | struct so_list *so = NULL; |
c5aa993b | 1125 | |
6c95b8df | 1126 | for (so = pspace->so_list; so; so = so->next) |
5fd1a349 PP |
1127 | if (solib_contains_address_p (so, address)) |
1128 | return (so->so_name); | |
07cd4b97 | 1129 | |
c906108c SS |
1130 | return (0); |
1131 | } | |
1132 | ||
de18c1d8 JM |
1133 | /* Return whether the data starting at VADDR, size SIZE, must be kept |
1134 | in a core file for shared libraries loaded before "gcore" is used | |
1135 | to be handled correctly when the core file is loaded. This only | |
1136 | applies when the section would otherwise not be kept in the core | |
1137 | file (in particular, for readonly sections). */ | |
1138 | ||
1139 | int | |
1140 | solib_keep_data_in_core (CORE_ADDR vaddr, unsigned long size) | |
1141 | { | |
3641da11 | 1142 | const struct target_so_ops *ops = solib_ops (target_gdbarch ()); |
de18c1d8 JM |
1143 | |
1144 | if (ops->keep_data_in_core) | |
1145 | return ops->keep_data_in_core (vaddr, size); | |
1146 | else | |
1147 | return 0; | |
1148 | } | |
1149 | ||
c906108c SS |
1150 | /* Called by free_all_symtabs */ |
1151 | ||
c5aa993b | 1152 | void |
fba45db2 | 1153 | clear_solib (void) |
c906108c | 1154 | { |
3641da11 | 1155 | const struct target_so_ops *ops = solib_ops (target_gdbarch ()); |
66aba65d | 1156 | |
085dd6e6 JM |
1157 | /* This function is expected to handle ELF shared libraries. It is |
1158 | also used on Solaris, which can run either ELF or a.out binaries | |
1159 | (for compatibility with SunOS 4), both of which can use shared | |
1160 | libraries. So we don't know whether we have an ELF executable or | |
1161 | an a.out executable until the user chooses an executable file. | |
1162 | ||
1163 | ELF shared libraries don't get mapped into the address space | |
1164 | until after the program starts, so we'd better not try to insert | |
1165 | breakpoints in them immediately. We have to wait until the | |
1166 | dynamic linker has loaded them; we'll hit a bp_shlib_event | |
1167 | breakpoint (look for calls to create_solib_event_breakpoint) when | |
1168 | it's ready. | |
1169 | ||
1170 | SunOS shared libraries seem to be different --- they're present | |
1171 | as soon as the process begins execution, so there's no need to | |
1172 | put off inserting breakpoints. There's also nowhere to put a | |
1173 | bp_shlib_event breakpoint, so if we put it off, we'll never get | |
1174 | around to it. | |
1175 | ||
1176 | So: disable breakpoints only if we're using ELF shared libs. */ | |
1177 | if (exec_bfd != NULL | |
1178 | && bfd_get_flavour (exec_bfd) != bfd_target_aout_flavour) | |
cb851954 | 1179 | disable_breakpoints_in_shlibs (); |
085dd6e6 | 1180 | |
c906108c SS |
1181 | while (so_list_head) |
1182 | { | |
07cd4b97 | 1183 | struct so_list *so = so_list_head; |
433759f7 | 1184 | |
07cd4b97 | 1185 | so_list_head = so->next; |
c86cf029 | 1186 | observer_notify_solib_unloaded (so); |
046ac79f | 1187 | remove_target_sections (so); |
07cd4b97 | 1188 | free_so (so); |
c906108c | 1189 | } |
07cd4b97 | 1190 | |
66aba65d | 1191 | ops->clear_solib (); |
c906108c SS |
1192 | } |
1193 | ||
7f86f058 PA |
1194 | /* Shared library startup support. When GDB starts up the inferior, |
1195 | it nurses it along (through the shell) until it is ready to execute | |
1196 | its first instruction. At this point, this function gets | |
1197 | called. */ | |
c5aa993b JM |
1198 | |
1199 | void | |
268a4a75 | 1200 | solib_create_inferior_hook (int from_tty) |
c906108c | 1201 | { |
3641da11 | 1202 | const struct target_so_ops *ops = solib_ops (target_gdbarch ()); |
433759f7 | 1203 | |
268a4a75 | 1204 | ops->solib_create_inferior_hook (from_tty); |
c906108c SS |
1205 | } |
1206 | ||
7f86f058 PA |
1207 | /* Check to see if an address is in the dynamic loader's dynamic |
1208 | symbol resolution code. Return 1 if so, 0 otherwise. */ | |
d7fa2ae2 KB |
1209 | |
1210 | int | |
1211 | in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
1212 | { | |
3641da11 | 1213 | const struct target_so_ops *ops = solib_ops (target_gdbarch ()); |
433759f7 | 1214 | |
66aba65d | 1215 | return ops->in_dynsym_resolve_code (pc); |
d7fa2ae2 | 1216 | } |
c906108c | 1217 | |
7f86f058 | 1218 | /* Implements the "sharedlibrary" command. */ |
c906108c SS |
1219 | |
1220 | static void | |
fba45db2 | 1221 | sharedlibrary_command (char *args, int from_tty) |
c906108c SS |
1222 | { |
1223 | dont_repeat (); | |
990f9fe3 | 1224 | solib_add (args, from_tty, (struct target_ops *) 0, 1); |
c906108c SS |
1225 | } |
1226 | ||
7f86f058 | 1227 | /* Implements the command "nosharedlibrary", which discards symbols |
cb0ba49e MS |
1228 | that have been auto-loaded from shared libraries. Symbols from |
1229 | shared libraries that were added by explicit request of the user | |
1230 | are not discarded. Also called from remote.c. */ | |
1231 | ||
c60a7562 MS |
1232 | void |
1233 | no_shared_libraries (char *ignored, int from_tty) | |
1234 | { | |
a3247a22 PP |
1235 | /* The order of the two routines below is important: clear_solib notifies |
1236 | the solib_unloaded observers, and some of these observers might need | |
1237 | access to their associated objfiles. Therefore, we can not purge the | |
1238 | solibs' objfiles before clear_solib has been called. */ | |
1239 | ||
615b9dba | 1240 | clear_solib (); |
a3247a22 | 1241 | objfile_purge_solibs (); |
c60a7562 | 1242 | } |
c906108c | 1243 | |
f9e14852 GB |
1244 | /* See solib.h. */ |
1245 | ||
1246 | void | |
1247 | update_solib_breakpoints (void) | |
1248 | { | |
1249 | const struct target_so_ops *ops = solib_ops (target_gdbarch ()); | |
1250 | ||
1251 | if (ops->update_breakpoints != NULL) | |
1252 | ops->update_breakpoints (); | |
1253 | } | |
1254 | ||
1255 | /* See solib.h. */ | |
1256 | ||
1257 | void | |
1258 | handle_solib_event (void) | |
1259 | { | |
1260 | const struct target_so_ops *ops = solib_ops (target_gdbarch ()); | |
1261 | ||
1262 | if (ops->handle_event != NULL) | |
1263 | ops->handle_event (); | |
1264 | ||
1265 | clear_program_space_solib_cache (current_inferior ()->pspace); | |
1266 | ||
1267 | /* Check for any newly added shared libraries if we're supposed to | |
1268 | be adding them automatically. Switch terminal for any messages | |
1269 | produced by breakpoint_re_set. */ | |
1270 | target_terminal_ours_for_output (); | |
1271 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
1272 | target_terminal_inferior (); | |
1273 | } | |
1274 | ||
a86988f2 PA |
1275 | /* Reload shared libraries, but avoid reloading the same symbol file |
1276 | we already have loaded. */ | |
1277 | ||
1278 | static void | |
1279 | reload_shared_libraries_1 (int from_tty) | |
1280 | { | |
1281 | struct so_list *so; | |
1282 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
1283 | ||
770e7fc7 DE |
1284 | if (print_symbol_loading_p (from_tty, 0, 0)) |
1285 | printf_unfiltered (_("Loading symbols for shared libraries.\n")); | |
1286 | ||
a86988f2 PA |
1287 | for (so = so_list_head; so != NULL; so = so->next) |
1288 | { | |
1289 | char *filename, *found_pathname = NULL; | |
1290 | bfd *abfd; | |
a86988f2 PA |
1291 | int was_loaded = so->symbols_loaded; |
1292 | const int flags = | |
1293 | SYMFILE_DEFER_BP_RESET | (from_tty ? SYMFILE_VERBOSE : 0); | |
1294 | ||
1295 | filename = tilde_expand (so->so_original_name); | |
42b1321c | 1296 | make_cleanup (xfree, filename); |
a86988f2 PA |
1297 | abfd = solib_bfd_open (filename); |
1298 | if (abfd != NULL) | |
1299 | { | |
1300 | found_pathname = xstrdup (bfd_get_filename (abfd)); | |
1301 | make_cleanup (xfree, found_pathname); | |
cbb099e8 | 1302 | gdb_bfd_unref (abfd); |
a86988f2 PA |
1303 | } |
1304 | ||
1305 | /* If this shared library is no longer associated with its previous | |
1306 | symbol file, close that. */ | |
1307 | if ((found_pathname == NULL && was_loaded) | |
1308 | || (found_pathname != NULL | |
0ba1096a | 1309 | && filename_cmp (found_pathname, so->so_name) != 0)) |
a86988f2 | 1310 | { |
59145f8c AR |
1311 | if (so->objfile && ! (so->objfile->flags & OBJF_USERLOADED) |
1312 | && !solib_used (so)) | |
a86988f2 | 1313 | free_objfile (so->objfile); |
046ac79f | 1314 | remove_target_sections (so); |
0892cb63 | 1315 | clear_so (so); |
a86988f2 PA |
1316 | } |
1317 | ||
1318 | /* If this shared library is now associated with a new symbol | |
1319 | file, open it. */ | |
1320 | if (found_pathname != NULL | |
1321 | && (!was_loaded | |
0ba1096a | 1322 | || filename_cmp (found_pathname, so->so_name) != 0)) |
a86988f2 PA |
1323 | { |
1324 | volatile struct gdb_exception e; | |
1325 | ||
1326 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
1327 | solib_map_sections (so); | |
1328 | ||
1329 | if (e.reason < 0) | |
3e43a32a MS |
1330 | exception_fprintf (gdb_stderr, e, |
1331 | _("Error while mapping " | |
1332 | "shared library sections:\n")); | |
a86988f2 PA |
1333 | else if (auto_solib_add || was_loaded || libpthread_solib_p (so)) |
1334 | solib_read_symbols (so, flags); | |
1335 | } | |
1336 | } | |
1337 | ||
1338 | do_cleanups (old_chain); | |
1339 | } | |
1340 | ||
cf466558 | 1341 | static void |
f397e303 AC |
1342 | reload_shared_libraries (char *ignored, int from_tty, |
1343 | struct cmd_list_element *e) | |
cf466558 | 1344 | { |
3641da11 | 1345 | const struct target_so_ops *ops; |
a86988f2 PA |
1346 | |
1347 | reload_shared_libraries_1 (from_tty); | |
1348 | ||
f5656ead | 1349 | ops = solib_ops (target_gdbarch ()); |
a86988f2 | 1350 | |
c378eb4e | 1351 | /* Creating inferior hooks here has two purposes. First, if we reload |
c8fa6cdd VP |
1352 | shared libraries then the address of solib breakpoint we've computed |
1353 | previously might be no longer valid. For example, if we forgot to set | |
1354 | solib-absolute-prefix and are setting it right now, then the previous | |
1355 | breakpoint address is plain wrong. Second, installing solib hooks | |
1356 | also implicitly figures were ld.so is and loads symbols for it. | |
1357 | Absent this call, if we've just connected to a target and set | |
1358 | solib-absolute-prefix or solib-search-path, we'll lose all information | |
1359 | about ld.so. */ | |
1360 | if (target_has_execution) | |
1361 | { | |
a86988f2 PA |
1362 | /* Reset or free private data structures not associated with |
1363 | so_list entries. */ | |
1364 | ops->clear_solib (); | |
1365 | ||
1366 | /* Remove any previous solib event breakpoint. This is usually | |
1367 | done in common code, at breakpoint_init_inferior time, but | |
1368 | we're not really starting up the inferior here. */ | |
1369 | remove_solib_event_breakpoints (); | |
1370 | ||
268a4a75 | 1371 | solib_create_inferior_hook (from_tty); |
c8fa6cdd | 1372 | } |
268a4a75 JK |
1373 | |
1374 | /* Sometimes the platform-specific hook loads initial shared | |
1375 | libraries, and sometimes it doesn't. If it doesn't FROM_TTY will be | |
1376 | incorrectly 0 but such solib targets should be fixed anyway. If we | |
1377 | made all the inferior hook methods consistent, this call could be | |
1378 | removed. Call it only after the solib target has been initialized by | |
1379 | solib_create_inferior_hook. */ | |
1380 | ||
1381 | solib_add (NULL, 0, NULL, auto_solib_add); | |
1382 | ||
a86988f2 PA |
1383 | breakpoint_re_set (); |
1384 | ||
1385 | /* We may have loaded or unloaded debug info for some (or all) | |
1386 | shared libraries. However, frames may still reference them. For | |
1387 | example, a frame's unwinder might still point at DWARF FDE | |
1388 | structures that are now freed. Also, getting new symbols may | |
1389 | change our opinion about what is frameless. */ | |
c8fa6cdd | 1390 | reinit_frame_cache (); |
a86988f2 PA |
1391 | |
1392 | ops->special_symbol_handling (); | |
cf466558 KB |
1393 | } |
1394 | ||
920d2a44 AC |
1395 | static void |
1396 | show_auto_solib_add (struct ui_file *file, int from_tty, | |
1397 | struct cmd_list_element *c, const char *value) | |
1398 | { | |
1399 | fprintf_filtered (file, _("Autoloading of shared library symbols is %s.\n"), | |
1400 | value); | |
1401 | } | |
1402 | ||
1403 | ||
3a40aaa0 UW |
1404 | /* Handler for library-specific lookup of global symbol NAME in OBJFILE. Call |
1405 | the library-specific handler if it is installed for the current target. */ | |
1406 | ||
1407 | struct symbol * | |
1408 | solib_global_lookup (const struct objfile *objfile, | |
1409 | const char *name, | |
21b556f4 | 1410 | const domain_enum domain) |
3a40aaa0 | 1411 | { |
3641da11 | 1412 | const struct target_so_ops *ops = solib_ops (target_gdbarch ()); |
3a40aaa0 | 1413 | |
e8a92f7b | 1414 | if (ops->lookup_lib_global_symbol != NULL) |
94af9270 | 1415 | return ops->lookup_lib_global_symbol (objfile, name, domain); |
3a40aaa0 UW |
1416 | return NULL; |
1417 | } | |
1418 | ||
cb457ae2 YQ |
1419 | /* Lookup the value for a specific symbol from dynamic symbol table. Look |
1420 | up symbol from ABFD. MATCH_SYM is a callback function to determine | |
1421 | whether to pick up a symbol. DATA is the input of this callback | |
1422 | function. Return NULL if symbol is not found. */ | |
1423 | ||
1424 | CORE_ADDR | |
1425 | gdb_bfd_lookup_symbol_from_symtab (bfd *abfd, | |
1426 | int (*match_sym) (asymbol *, void *), | |
1427 | void *data) | |
1428 | { | |
1429 | long storage_needed = bfd_get_symtab_upper_bound (abfd); | |
1430 | CORE_ADDR symaddr = 0; | |
1431 | ||
1432 | if (storage_needed > 0) | |
1433 | { | |
1434 | unsigned int i; | |
1435 | ||
1436 | asymbol **symbol_table = (asymbol **) xmalloc (storage_needed); | |
1437 | struct cleanup *back_to = make_cleanup (xfree, symbol_table); | |
1438 | unsigned int number_of_symbols = | |
1439 | bfd_canonicalize_symtab (abfd, symbol_table); | |
1440 | ||
1441 | for (i = 0; i < number_of_symbols; i++) | |
1442 | { | |
1443 | asymbol *sym = *symbol_table++; | |
1444 | ||
1445 | if (match_sym (sym, data)) | |
1446 | { | |
1447 | /* BFD symbols are section relative. */ | |
1448 | symaddr = sym->value + sym->section->vma; | |
1449 | break; | |
1450 | } | |
1451 | } | |
1452 | do_cleanups (back_to); | |
1453 | } | |
1454 | ||
1455 | return symaddr; | |
1456 | } | |
1457 | ||
1458 | /* Lookup the value for a specific symbol from symbol table. Look up symbol | |
1459 | from ABFD. MATCH_SYM is a callback function to determine whether to pick | |
1460 | up a symbol. DATA is the input of this callback function. Return NULL | |
1461 | if symbol is not found. */ | |
1462 | ||
1463 | static CORE_ADDR | |
1464 | bfd_lookup_symbol_from_dyn_symtab (bfd *abfd, | |
1465 | int (*match_sym) (asymbol *, void *), | |
1466 | void *data) | |
1467 | { | |
1468 | long storage_needed = bfd_get_dynamic_symtab_upper_bound (abfd); | |
1469 | CORE_ADDR symaddr = 0; | |
1470 | ||
1471 | if (storage_needed > 0) | |
1472 | { | |
1473 | unsigned int i; | |
1474 | asymbol **symbol_table = (asymbol **) xmalloc (storage_needed); | |
1475 | struct cleanup *back_to = make_cleanup (xfree, symbol_table); | |
1476 | unsigned int number_of_symbols = | |
1477 | bfd_canonicalize_dynamic_symtab (abfd, symbol_table); | |
1478 | ||
1479 | for (i = 0; i < number_of_symbols; i++) | |
1480 | { | |
1481 | asymbol *sym = *symbol_table++; | |
1482 | ||
1483 | if (match_sym (sym, data)) | |
1484 | { | |
1485 | /* BFD symbols are section relative. */ | |
1486 | symaddr = sym->value + sym->section->vma; | |
1487 | break; | |
1488 | } | |
1489 | } | |
1490 | do_cleanups (back_to); | |
1491 | } | |
1492 | return symaddr; | |
1493 | } | |
1494 | ||
1495 | /* Lookup the value for a specific symbol from symbol table and dynamic | |
1496 | symbol table. Look up symbol from ABFD. MATCH_SYM is a callback | |
1497 | function to determine whether to pick up a symbol. DATA is the | |
1498 | input of this callback function. Return NULL if symbol is not | |
1499 | found. */ | |
1500 | ||
1501 | CORE_ADDR | |
1502 | gdb_bfd_lookup_symbol (bfd *abfd, | |
1503 | int (*match_sym) (asymbol *, void *), | |
1504 | void *data) | |
1505 | { | |
1506 | CORE_ADDR symaddr = gdb_bfd_lookup_symbol_from_symtab (abfd, match_sym, data); | |
1507 | ||
1508 | /* On FreeBSD, the dynamic linker is stripped by default. So we'll | |
1509 | have to check the dynamic string table too. */ | |
1510 | if (symaddr == 0) | |
1511 | symaddr = bfd_lookup_symbol_from_dyn_symtab (abfd, match_sym, data); | |
1512 | ||
1513 | return symaddr; | |
1514 | } | |
3a40aaa0 | 1515 | |
63644780 NB |
1516 | /* SO_LIST_HEAD may contain user-loaded object files that can be removed |
1517 | out-of-band by the user. So upon notification of free_objfile remove | |
1518 | all references to any user-loaded file that is about to be freed. */ | |
1519 | ||
1520 | static void | |
1521 | remove_user_added_objfile (struct objfile *objfile) | |
1522 | { | |
1523 | struct so_list *so; | |
1524 | ||
1525 | if (objfile != 0 && objfile->flags & OBJF_USERLOADED) | |
1526 | { | |
1527 | for (so = so_list_head; so != NULL; so = so->next) | |
1528 | if (so->objfile == objfile) | |
1529 | so->objfile = NULL; | |
1530 | } | |
1531 | } | |
1532 | ||
a78f21af AC |
1533 | extern initialize_file_ftype _initialize_solib; /* -Wmissing-prototypes */ |
1534 | ||
c906108c | 1535 | void |
fba45db2 | 1536 | _initialize_solib (void) |
c906108c | 1537 | { |
66aba65d MK |
1538 | solib_data = gdbarch_data_register_pre_init (solib_init); |
1539 | ||
63644780 NB |
1540 | observer_attach_free_objfile (remove_user_added_objfile); |
1541 | ||
c906108c | 1542 | add_com ("sharedlibrary", class_files, sharedlibrary_command, |
1bedd215 | 1543 | _("Load shared object library symbols for files matching REGEXP.")); |
c5aa993b | 1544 | add_info ("sharedlibrary", info_sharedlibrary_command, |
1bedd215 | 1545 | _("Status of loaded shared object libraries.")); |
c60a7562 | 1546 | add_com ("nosharedlibrary", class_files, no_shared_libraries, |
1bedd215 | 1547 | _("Unload all shared object library symbols.")); |
c906108c | 1548 | |
5bf193a2 AC |
1549 | add_setshow_boolean_cmd ("auto-solib-add", class_support, |
1550 | &auto_solib_add, _("\ | |
1551 | Set autoloading of shared library symbols."), _("\ | |
1552 | Show autoloading of shared library symbols."), _("\ | |
b7209cb4 FF |
1553 | If \"on\", symbols from all shared object libraries will be loaded\n\ |
1554 | automatically when the inferior begins execution, when the dynamic linker\n\ | |
1555 | informs gdb that a new library has been loaded, or when attaching to the\n\ | |
3e43a32a MS |
1556 | inferior. Otherwise, symbols must be loaded manually, using \ |
1557 | `sharedlibrary'."), | |
5bf193a2 | 1558 | NULL, |
920d2a44 | 1559 | show_auto_solib_add, |
5bf193a2 | 1560 | &setlist, &showlist); |
c906108c | 1561 | |
f822c95b DJ |
1562 | add_setshow_filename_cmd ("sysroot", class_support, |
1563 | &gdb_sysroot, _("\ | |
1564 | Set an alternate system root."), _("\ | |
1565 | Show the current system root."), _("\ | |
1566 | The system root is used to load absolute shared library symbol files.\n\ | |
1567 | For other (relative) files, you can add directories using\n\ | |
1568 | `set solib-search-path'."), | |
f397e303 AC |
1569 | reload_shared_libraries, |
1570 | NULL, | |
1571 | &setlist, &showlist); | |
c906108c | 1572 | |
f822c95b DJ |
1573 | add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0, |
1574 | &setlist); | |
1575 | add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0, | |
1576 | &showlist); | |
030292b7 | 1577 | |
525226b5 AC |
1578 | add_setshow_optional_filename_cmd ("solib-search-path", class_support, |
1579 | &solib_search_path, _("\ | |
3e43a32a MS |
1580 | Set the search path for loading non-absolute shared library symbol files."), |
1581 | _("\ | |
1582 | Show the search path for loading non-absolute shared library symbol files."), | |
1583 | _("\ | |
1584 | This takes precedence over the environment variables \ | |
1585 | PATH and LD_LIBRARY_PATH."), | |
525226b5 | 1586 | reload_shared_libraries, |
920d2a44 | 1587 | show_solib_search_path, |
525226b5 | 1588 | &setlist, &showlist); |
c906108c | 1589 | } |