Commit | Line | Data |
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13437d4b | 1 | /* Handle shared libraries for GDB, the GNU Debugger. |
14a5e767 | 2 | |
6aba47ca | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
7b6bb8da | 4 | 2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
9b254dd1 | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 21 | |
c906108c SS |
22 | #include "defs.h" |
23 | ||
c906108c | 24 | #include <sys/types.h> |
c906108c | 25 | #include <fcntl.h> |
13437d4b | 26 | #include "gdb_string.h" |
c906108c SS |
27 | #include "symtab.h" |
28 | #include "bfd.h" | |
29 | #include "symfile.h" | |
30 | #include "objfiles.h" | |
60250e8b | 31 | #include "exceptions.h" |
c906108c SS |
32 | #include "gdbcore.h" |
33 | #include "command.h" | |
34 | #include "target.h" | |
35 | #include "frame.h" | |
88987551 | 36 | #include "gdb_regex.h" |
c906108c SS |
37 | #include "inferior.h" |
38 | #include "environ.h" | |
39 | #include "language.h" | |
40 | #include "gdbcmd.h" | |
fa58ee11 | 41 | #include "completer.h" |
fe4e3eb8 | 42 | #include "filenames.h" /* for DOSish file names */ |
4646aa9d | 43 | #include "exec.h" |
13437d4b | 44 | #include "solist.h" |
84acb35a | 45 | #include "observer.h" |
dbda9972 | 46 | #include "readline/readline.h" |
f1838a98 | 47 | #include "remote.h" |
2c0b251b | 48 | #include "solib.h" |
55333a84 | 49 | #include "interps.h" |
ab38a727 | 50 | #include "filesystem.h" |
c906108c | 51 | |
66aba65d MK |
52 | /* Architecture-specific operations. */ |
53 | ||
54 | /* Per-architecture data key. */ | |
55 | static struct gdbarch_data *solib_data; | |
56 | ||
57 | static void * | |
58 | solib_init (struct obstack *obstack) | |
59 | { | |
60 | struct target_so_ops **ops; | |
61 | ||
62 | ops = OBSTACK_ZALLOC (obstack, struct target_so_ops *); | |
63 | *ops = current_target_so_ops; | |
64 | return ops; | |
65 | } | |
66 | ||
67 | static struct target_so_ops * | |
68 | solib_ops (struct gdbarch *gdbarch) | |
69 | { | |
70 | struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data); | |
433759f7 | 71 | |
66aba65d MK |
72 | return *ops; |
73 | } | |
7d522c90 DJ |
74 | |
75 | /* Set the solib operations for GDBARCH to NEW_OPS. */ | |
76 | ||
77 | void | |
78 | set_solib_ops (struct gdbarch *gdbarch, struct target_so_ops *new_ops) | |
79 | { | |
80 | struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data); | |
433759f7 | 81 | |
7d522c90 DJ |
82 | *ops = new_ops; |
83 | } | |
66aba65d MK |
84 | \f |
85 | ||
13437d4b | 86 | /* external data declarations */ |
c906108c | 87 | |
7d522c90 DJ |
88 | /* FIXME: gdbarch needs to control this variable, or else every |
89 | configuration needs to call set_solib_ops. */ | |
13437d4b | 90 | struct target_so_ops *current_target_so_ops; |
23e04971 | 91 | |
6c95b8df PA |
92 | /* List of known shared objects */ |
93 | #define so_list_head current_program_space->so_list | |
23e04971 | 94 | |
c906108c SS |
95 | /* Local function prototypes */ |
96 | ||
c906108c SS |
97 | /* If non-empty, this is a search path for loading non-absolute shared library |
98 | symbol files. This takes precedence over the environment variables PATH | |
99 | and LD_LIBRARY_PATH. */ | |
100 | static char *solib_search_path = NULL; | |
920d2a44 AC |
101 | static void |
102 | show_solib_search_path (struct ui_file *file, int from_tty, | |
103 | struct cmd_list_element *c, const char *value) | |
104 | { | |
3e43a32a MS |
105 | fprintf_filtered (file, _("The search path for loading non-absolute " |
106 | "shared library symbol files is %s.\n"), | |
920d2a44 AC |
107 | value); |
108 | } | |
c906108c | 109 | |
ab38a727 PA |
110 | /* Same as HAVE_DOS_BASED_FILE_SYSTEM, but useable as an rvalue. */ |
111 | #if (HAVE_DOS_BASED_FILE_SYSTEM) | |
112 | # define DOS_BASED_FILE_SYSTEM 1 | |
113 | #else | |
114 | # define DOS_BASED_FILE_SYSTEM 0 | |
115 | #endif | |
116 | ||
e4f7b8c8 MS |
117 | /* |
118 | ||
119 | GLOBAL FUNCTION | |
120 | ||
572d275c | 121 | solib_find -- Find a shared library file. |
e4f7b8c8 MS |
122 | |
123 | SYNOPSIS | |
124 | ||
572d275c | 125 | char *solib_find (char *in_pathname, int *fd); |
e4f7b8c8 MS |
126 | |
127 | DESCRIPTION | |
128 | ||
f822c95b | 129 | Global variable GDB_SYSROOT is used as a prefix directory |
e4f7b8c8 MS |
130 | to search for shared libraries if they have an absolute path. |
131 | ||
132 | Global variable SOLIB_SEARCH_PATH is used as a prefix directory | |
133 | (or set of directories, as in LD_LIBRARY_PATH) to search for all | |
f822c95b | 134 | shared libraries if not found in GDB_SYSROOT. |
e4f7b8c8 | 135 | |
c8c18e65 | 136 | Search algorithm: |
f822c95b DJ |
137 | * If there is a gdb_sysroot and path is absolute: |
138 | * Search for gdb_sysroot/path. | |
c8c18e65 KW |
139 | * else |
140 | * Look for it literally (unmodified). | |
e4f7b8c8 | 141 | * Look in SOLIB_SEARCH_PATH. |
f43caff8 | 142 | * If available, use target defined search function. |
f822c95b | 143 | * If gdb_sysroot is NOT set, perform the following two searches: |
c8c18e65 KW |
144 | * Look in inferior's $PATH. |
145 | * Look in inferior's $LD_LIBRARY_PATH. | |
ab38a727 | 146 | * |
c8c18e65 | 147 | * The last check avoids doing this search when targetting remote |
f822c95b | 148 | * machines since gdb_sysroot will almost always be set. |
e4f7b8c8 MS |
149 | |
150 | RETURNS | |
b21f0843 | 151 | |
572d275c UW |
152 | Full pathname of the shared library file, or NULL if not found. |
153 | (The pathname is malloc'ed; it needs to be freed by the caller.) | |
154 | *FD is set to either -1 or an open file handle for the library. */ | |
e4f7b8c8 | 155 | |
572d275c UW |
156 | char * |
157 | solib_find (char *in_pathname, int *fd) | |
e4f7b8c8 | 158 | { |
1cf3db46 | 159 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
e4f7b8c8 MS |
160 | int found_file = -1; |
161 | char *temp_pathname = NULL; | |
f822c95b | 162 | int gdb_sysroot_is_empty; |
08105857 PA |
163 | const char *solib_symbols_extension |
164 | = gdbarch_solib_symbols_extension (target_gdbarch); | |
ab38a727 PA |
165 | const char *fskind = effective_target_file_system_kind (); |
166 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
167 | char *sysroot = NULL; | |
08105857 PA |
168 | |
169 | /* If solib_symbols_extension is set, replace the file's | |
170 | extension. */ | |
171 | if (solib_symbols_extension) | |
172 | { | |
173 | char *p = in_pathname + strlen (in_pathname); | |
433759f7 | 174 | |
08105857 PA |
175 | while (p > in_pathname && *p != '.') |
176 | p--; | |
177 | ||
178 | if (*p == '.') | |
179 | { | |
180 | char *new_pathname; | |
181 | ||
182 | new_pathname = alloca (p - in_pathname + 1 | |
183 | + strlen (solib_symbols_extension) + 1); | |
184 | memcpy (new_pathname, in_pathname, p - in_pathname + 1); | |
185 | strcpy (new_pathname + (p - in_pathname) + 1, | |
186 | solib_symbols_extension); | |
187 | ||
188 | in_pathname = new_pathname; | |
189 | } | |
190 | } | |
58dc52c3 | 191 | |
f822c95b | 192 | gdb_sysroot_is_empty = (gdb_sysroot == NULL || *gdb_sysroot == 0); |
e4f7b8c8 | 193 | |
ab38a727 | 194 | if (!gdb_sysroot_is_empty) |
e4f7b8c8 | 195 | { |
f822c95b | 196 | int prefix_len = strlen (gdb_sysroot); |
f1d10cfb AS |
197 | |
198 | /* Remove trailing slashes from absolute prefix. */ | |
199 | while (prefix_len > 0 | |
f822c95b | 200 | && IS_DIR_SEPARATOR (gdb_sysroot[prefix_len - 1])) |
f1d10cfb AS |
201 | prefix_len--; |
202 | ||
ab38a727 PA |
203 | sysroot = savestring (gdb_sysroot, prefix_len); |
204 | make_cleanup (xfree, sysroot); | |
205 | } | |
206 | ||
207 | /* If we're on a non-DOS-based system, backslashes won't be | |
208 | understood as directory separator, so, convert them to forward | |
209 | slashes, iff we're supposed to handle DOS-based file system | |
210 | semantics for target paths. */ | |
211 | if (!DOS_BASED_FILE_SYSTEM && fskind == file_system_kind_dos_based) | |
212 | { | |
213 | char *p; | |
214 | ||
215 | /* Avoid clobbering our input. */ | |
216 | p = alloca (strlen (in_pathname) + 1); | |
217 | strcpy (p, in_pathname); | |
218 | in_pathname = p; | |
219 | ||
220 | for (; *p; p++) | |
221 | { | |
222 | if (*p == '\\') | |
223 | *p = '/'; | |
224 | } | |
225 | } | |
226 | ||
227 | /* Note, we're interested in IS_TARGET_ABSOLUTE_PATH, not | |
228 | IS_ABSOLUTE_PATH. The latter is for host paths only, while | |
229 | IN_PATHNAME is a target path. For example, if we're supposed to | |
230 | be handling DOS-like semantics we want to consider a | |
231 | 'c:/foo/bar.dll' path as an absolute path, even on a Unix box. | |
232 | With such a path, before giving up on the sysroot, we'll try: | |
233 | ||
234 | 1st attempt, c:/foo/bar.dll ==> /sysroot/c:/foo/bar.dll | |
235 | 2nd attempt, c:/foo/bar.dll ==> /sysroot/c/foo/bar.dll | |
236 | 3rd attempt, c:/foo/bar.dll ==> /sysroot/foo/bar.dll | |
237 | */ | |
238 | ||
239 | if (!IS_TARGET_ABSOLUTE_PATH (fskind, in_pathname) || gdb_sysroot_is_empty) | |
240 | temp_pathname = xstrdup (in_pathname); | |
241 | else | |
242 | { | |
243 | int need_dir_separator; | |
244 | ||
245 | need_dir_separator = !IS_DIR_SEPARATOR (in_pathname[0]); | |
246 | ||
f1d10cfb | 247 | /* Cat the prefixed pathname together. */ |
ab38a727 PA |
248 | temp_pathname = concat (sysroot, |
249 | need_dir_separator ? SLASH_STRING : "", | |
250 | in_pathname, (char *) NULL); | |
e4f7b8c8 MS |
251 | } |
252 | ||
f1838a98 UW |
253 | /* Handle remote files. */ |
254 | if (remote_filename_p (temp_pathname)) | |
255 | { | |
572d275c | 256 | *fd = -1; |
f748fb40 | 257 | do_cleanups (old_chain); |
ab38a727 | 258 | return temp_pathname; |
f1838a98 UW |
259 | } |
260 | ||
f1d10cfb AS |
261 | /* Now see if we can open it. */ |
262 | found_file = open (temp_pathname, O_RDONLY | O_BINARY, 0); | |
ab38a727 PA |
263 | if (found_file < 0) |
264 | xfree (temp_pathname); | |
265 | ||
266 | /* If the search in gdb_sysroot failed, and the path name has a | |
267 | drive spec (e.g, c:/foo), try stripping ':' from the drive spec, | |
268 | and retrying in the sysroot: | |
269 | c:/foo/bar.dll ==> /sysroot/c/foo/bar.dll. */ | |
f1d10cfb | 270 | |
ab38a727 PA |
271 | if (found_file < 0 |
272 | && !gdb_sysroot_is_empty | |
273 | && HAS_TARGET_DRIVE_SPEC (fskind, in_pathname)) | |
274 | { | |
275 | int need_dir_separator = !IS_DIR_SEPARATOR (in_pathname[2]); | |
276 | char *drive = savestring (in_pathname, 1); | |
277 | ||
278 | temp_pathname = concat (sysroot, | |
279 | SLASH_STRING, | |
280 | drive, | |
281 | need_dir_separator ? SLASH_STRING : "", | |
282 | in_pathname + 2, (char *) NULL); | |
283 | xfree (drive); | |
284 | ||
285 | found_file = open (temp_pathname, O_RDONLY | O_BINARY, 0); | |
286 | if (found_file < 0) | |
287 | { | |
ab38a727 PA |
288 | xfree (temp_pathname); |
289 | ||
290 | /* If the search in gdb_sysroot still failed, try fully | |
291 | stripping the drive spec, and trying once more in the | |
292 | sysroot before giving up. | |
293 | ||
294 | c:/foo/bar.dll ==> /sysroot/foo/bar.dll. */ | |
295 | ||
296 | temp_pathname = concat (sysroot, | |
297 | need_dir_separator ? SLASH_STRING : "", | |
298 | in_pathname + 2, (char *) NULL); | |
299 | ||
300 | found_file = open (temp_pathname, O_RDONLY | O_BINARY, 0); | |
301 | if (found_file < 0) | |
302 | xfree (temp_pathname); | |
303 | } | |
304 | } | |
0997b535 | 305 | |
ab38a727 PA |
306 | do_cleanups (old_chain); |
307 | ||
308 | /* We try to find the library in various ways. After each attempt, | |
309 | either found_file >= 0 and temp_pathname is a malloc'd string, or | |
310 | found_file < 0 and temp_pathname does not point to storage that | |
311 | needs to be freed. */ | |
312 | ||
313 | if (found_file < 0) | |
314 | temp_pathname = NULL; | |
315 | ||
316 | /* If not found, search the solib_search_path (if any). */ | |
317 | if (found_file < 0 && solib_search_path != NULL) | |
318 | found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST, | |
319 | in_pathname, O_RDONLY | O_BINARY, &temp_pathname); | |
0997b535 | 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) |
014d698b | 338 | found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST, |
fbdebf46 | 339 | in_pathname, O_RDONLY | O_BINARY, &temp_pathname); |
ab38a727 | 340 | |
ba5f0d88 OF |
341 | /* If not found, next search the solib_search_path (if any) for the basename |
342 | only (ignoring the path). This is to allow reading solibs from a path | |
343 | that differs from the opened path. */ | |
344 | if (found_file < 0 && solib_search_path != NULL) | |
014d698b | 345 | found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST, |
ab38a727 PA |
346 | target_lbasename (fskind, in_pathname), |
347 | O_RDONLY | O_BINARY, &temp_pathname); | |
e4f7b8c8 | 348 | |
c378eb4e | 349 | /* If not found, try to use target supplied solib search method. */ |
66aba65d | 350 | if (found_file < 0 && ops->find_and_open_solib) |
637d6690 | 351 | found_file = ops->find_and_open_solib (in_pathname, O_RDONLY | O_BINARY, |
66aba65d | 352 | &temp_pathname); |
2610b0bf | 353 | |
c378eb4e | 354 | /* If not found, next search the inferior's $PATH environment variable. */ |
f822c95b | 355 | if (found_file < 0 && gdb_sysroot_is_empty) |
3f81c18a VP |
356 | found_file = openp (get_in_environ (current_inferior ()->environment, |
357 | "PATH"), | |
fbdebf46 | 358 | OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY, |
014d698b | 359 | &temp_pathname); |
e4f7b8c8 | 360 | |
ab38a727 | 361 | /* If not found, next search the inferior's $LD_LIBRARY_PATH |
c378eb4e | 362 | environment variable. */ |
f822c95b | 363 | if (found_file < 0 && gdb_sysroot_is_empty) |
3f81c18a VP |
364 | found_file = openp (get_in_environ (current_inferior ()->environment, |
365 | "LD_LIBRARY_PATH"), | |
fbdebf46 | 366 | OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY, |
014d698b | 367 | &temp_pathname); |
e4f7b8c8 | 368 | |
572d275c UW |
369 | *fd = found_file; |
370 | return temp_pathname; | |
371 | } | |
372 | ||
373 | /* Open and return a BFD for the shared library PATHNAME. If FD is not -1, | |
374 | it is used as file handle to open the file. Throws an error if the file | |
375 | could not be opened. Handles both local and remote file access. | |
376 | ||
377 | PATHNAME must be malloc'ed by the caller. If successful, the new BFD's | |
378 | name will point to it. If unsuccessful, PATHNAME will be freed and the | |
379 | FD will be closed (unless FD was -1). */ | |
380 | ||
381 | bfd * | |
382 | solib_bfd_fopen (char *pathname, int fd) | |
383 | { | |
384 | bfd *abfd; | |
385 | ||
386 | if (remote_filename_p (pathname)) | |
387 | { | |
388 | gdb_assert (fd == -1); | |
389 | abfd = remote_bfd_open (pathname, gnutarget); | |
390 | } | |
391 | else | |
392 | { | |
393 | abfd = bfd_fopen (pathname, gnutarget, FOPEN_RB, fd); | |
394 | ||
395 | if (abfd) | |
396 | bfd_set_cacheable (abfd, 1); | |
397 | else if (fd != -1) | |
398 | close (fd); | |
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 | ||
572d275c UW |
408 | return abfd; |
409 | } | |
410 | ||
411 | /* Find shared library PATHNAME and open a BFD for it. */ | |
412 | ||
413 | bfd * | |
414 | solib_bfd_open (char *pathname) | |
415 | { | |
572d275c UW |
416 | char *found_pathname; |
417 | int found_file; | |
418 | bfd *abfd; | |
378d2b72 | 419 | const struct bfd_arch_info *b; |
572d275c | 420 | |
572d275c UW |
421 | /* Search for shared library file. */ |
422 | found_pathname = solib_find (pathname, &found_file); | |
423 | if (found_pathname == NULL) | |
048d532d PA |
424 | { |
425 | /* Return failure if the file could not be found, so that we can | |
426 | accumulate messages about missing libraries. */ | |
427 | if (errno == ENOENT) | |
428 | return NULL; | |
429 | ||
430 | perror_with_name (pathname); | |
431 | } | |
572d275c UW |
432 | |
433 | /* Open bfd for shared library. */ | |
434 | abfd = solib_bfd_fopen (found_pathname, found_file); | |
435 | ||
436 | /* Check bfd format. */ | |
f1838a98 | 437 | if (!bfd_check_format (abfd, bfd_object)) |
0997b535 | 438 | { |
f1838a98 | 439 | bfd_close (abfd); |
572d275c | 440 | make_cleanup (xfree, found_pathname); |
f1838a98 | 441 | error (_("`%s': not in executable format: %s"), |
572d275c | 442 | found_pathname, bfd_errmsg (bfd_get_error ())); |
0997b535 | 443 | } |
f1838a98 | 444 | |
378d2b72 HZ |
445 | /* Check bfd arch. */ |
446 | b = gdbarch_bfd_arch_info (target_gdbarch); | |
69e2bf17 | 447 | if (!b->compatible (b, bfd_get_arch_info (abfd))) |
378d2b72 HZ |
448 | warning (_("`%s': Shared library architecture %s is not compatible " |
449 | "with target architecture %s."), found_pathname, | |
450 | bfd_get_arch_info (abfd)->printable_name, b->printable_name); | |
451 | ||
f1838a98 | 452 | return abfd; |
e4f7b8c8 MS |
453 | } |
454 | ||
455 | ||
c906108c SS |
456 | /* |
457 | ||
c5aa993b | 458 | LOCAL FUNCTION |
c906108c | 459 | |
c5aa993b | 460 | solib_map_sections -- open bfd and build sections for shared lib |
c906108c | 461 | |
c5aa993b | 462 | SYNOPSIS |
c906108c | 463 | |
c5aa993b | 464 | static int solib_map_sections (struct so_list *so) |
c906108c | 465 | |
c5aa993b | 466 | DESCRIPTION |
c906108c | 467 | |
c5aa993b JM |
468 | Given a pointer to one of the shared objects in our list |
469 | of mapped objects, use the recorded name to open a bfd | |
470 | descriptor for the object, build a section table, and then | |
471 | relocate all the section addresses by the base address at | |
472 | which the shared object was mapped. | |
c906108c | 473 | |
c5aa993b | 474 | FIXMES |
c906108c | 475 | |
c5aa993b JM |
476 | In most (all?) cases the shared object file name recorded in the |
477 | dynamic linkage tables will be a fully qualified pathname. For | |
478 | cases where it isn't, do we really mimic the systems search | |
479 | mechanism correctly in the below code (particularly the tilde | |
480 | expansion stuff?). | |
c906108c SS |
481 | */ |
482 | ||
483 | static int | |
048d532d | 484 | solib_map_sections (struct so_list *so) |
c906108c | 485 | { |
831a0c44 | 486 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
c906108c | 487 | char *filename; |
0542c86d | 488 | struct target_section *p; |
c906108c SS |
489 | struct cleanup *old_chain; |
490 | bfd *abfd; | |
c5aa993b JM |
491 | |
492 | filename = tilde_expand (so->so_name); | |
b8c9b27d | 493 | old_chain = make_cleanup (xfree, filename); |
831a0c44 | 494 | abfd = ops->bfd_open (filename); |
f1838a98 | 495 | do_cleanups (old_chain); |
e4f7b8c8 | 496 | |
048d532d PA |
497 | if (abfd == NULL) |
498 | return 0; | |
499 | ||
13437d4b | 500 | /* Leave bfd open, core_xfer_memory and "info files" need it. */ |
3db741ef | 501 | so->abfd = gdb_bfd_ref (abfd); |
23e04971 | 502 | |
e4f7b8c8 | 503 | /* copy full path name into so_name, so that later symbol_file_add |
c378eb4e | 504 | can find it. */ |
f1838a98 UW |
505 | if (strlen (bfd_get_filename (abfd)) >= SO_NAME_MAX_PATH_SIZE) |
506 | error (_("Shared library file name is too long.")); | |
507 | strcpy (so->so_name, bfd_get_filename (abfd)); | |
23e04971 | 508 | |
13437d4b | 509 | if (build_section_table (abfd, &so->sections, &so->sections_end)) |
23e04971 | 510 | { |
8a3fe4f8 | 511 | error (_("Can't find the file sections in `%s': %s"), |
13437d4b | 512 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
23e04971 | 513 | } |
104c1213 | 514 | |
13437d4b | 515 | for (p = so->sections; p < so->sections_end; p++) |
104c1213 | 516 | { |
13437d4b KB |
517 | /* Relocate the section binding addresses as recorded in the shared |
518 | object's file by the base address to which the object was actually | |
c378eb4e | 519 | mapped. */ |
66aba65d | 520 | ops->relocate_section_addresses (so, p); |
cfa9d6d9 DJ |
521 | |
522 | /* If the target didn't provide information about the address | |
523 | range of the shared object, assume we want the location of | |
524 | the .text section. */ | |
525 | if (so->addr_low == 0 && so->addr_high == 0 | |
526 | && strcmp (p->the_bfd_section->name, ".text") == 0) | |
13437d4b | 527 | { |
cfa9d6d9 DJ |
528 | so->addr_low = p->addr; |
529 | so->addr_high = p->endaddr; | |
13437d4b | 530 | } |
104c1213 JM |
531 | } |
532 | ||
048d532d PA |
533 | /* Add the shared object's sections to the current set of file |
534 | section tables. Do this immediately after mapping the object so | |
535 | that later nodes in the list can query this object, as is needed | |
536 | in solib-osf.c. */ | |
537 | add_target_sections (so->sections, so->sections_end); | |
538 | ||
539 | return 1; | |
104c1213 | 540 | } |
c906108c | 541 | |
a86988f2 PA |
542 | /* Free symbol-file related contents of SO. If we have opened a BFD |
543 | for SO, close it. If we have placed SO's sections in some target's | |
544 | section table, the caller is responsible for removing them. | |
545 | ||
546 | This function doesn't mess with objfiles at all. If there is an | |
547 | objfile associated with SO that needs to be removed, the caller is | |
548 | responsible for taking care of that. */ | |
549 | ||
550 | static void | |
551 | free_so_symbols (struct so_list *so) | |
552 | { | |
a86988f2 PA |
553 | if (so->sections) |
554 | { | |
555 | xfree (so->sections); | |
556 | so->sections = so->sections_end = NULL; | |
557 | } | |
558 | ||
559 | gdb_bfd_unref (so->abfd); | |
560 | so->abfd = NULL; | |
561 | ||
562 | /* Our caller closed the objfile, possibly via objfile_purge_solibs. */ | |
563 | so->symbols_loaded = 0; | |
564 | so->objfile = NULL; | |
565 | ||
566 | so->addr_low = so->addr_high = 0; | |
567 | ||
568 | /* Restore the target-supplied file name. SO_NAME may be the path | |
569 | of the symbol file. */ | |
570 | strcpy (so->so_name, so->so_original_name); | |
571 | } | |
572 | ||
07cd4b97 | 573 | /* LOCAL FUNCTION |
c906108c | 574 | |
07cd4b97 | 575 | free_so --- free a `struct so_list' object |
c906108c | 576 | |
c5aa993b | 577 | SYNOPSIS |
c906108c | 578 | |
07cd4b97 | 579 | void free_so (struct so_list *so) |
c906108c | 580 | |
c5aa993b | 581 | DESCRIPTION |
c906108c | 582 | |
07cd4b97 | 583 | Free the storage associated with the `struct so_list' object SO. |
c378eb4e | 584 | If we have opened a BFD for SO, close it. |
c906108c | 585 | |
07cd4b97 JB |
586 | The caller is responsible for removing SO from whatever list it is |
587 | a member of. If we have placed SO's sections in some target's | |
588 | section table, the caller is responsible for removing them. | |
c906108c | 589 | |
07cd4b97 JB |
590 | This function doesn't mess with objfiles at all. If there is an |
591 | objfile associated with SO that needs to be removed, the caller is | |
592 | responsible for taking care of that. */ | |
593 | ||
13437d4b | 594 | void |
07cd4b97 | 595 | free_so (struct so_list *so) |
c906108c | 596 | { |
1cf3db46 | 597 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
c5aa993b | 598 | |
a86988f2 | 599 | free_so_symbols (so); |
66aba65d | 600 | ops->free_so (so); |
07cd4b97 | 601 | |
b8c9b27d | 602 | xfree (so); |
c906108c SS |
603 | } |
604 | ||
07cd4b97 | 605 | |
f8766ec1 KB |
606 | /* Return address of first so_list entry in master shared object list. */ |
607 | struct so_list * | |
608 | master_so_list (void) | |
609 | { | |
610 | return so_list_head; | |
611 | } | |
612 | ||
7eedccfa PP |
613 | /* Read in symbols for shared object SO. If SYMFILE_VERBOSE is set in FLAGS, |
614 | be chatty about it. Return non-zero if any symbols were actually | |
42a6e6a0 MK |
615 | loaded. */ |
616 | ||
617 | int | |
7eedccfa | 618 | solib_read_symbols (struct so_list *so, int flags) |
42a6e6a0 | 619 | { |
7eedccfa PP |
620 | const int from_tty = flags & SYMFILE_VERBOSE; |
621 | ||
42a6e6a0 MK |
622 | if (so->symbols_loaded) |
623 | { | |
a86988f2 | 624 | /* If needed, we've already warned in our caller. */ |
42a6e6a0 | 625 | } |
8bb75286 DJ |
626 | else if (so->abfd == NULL) |
627 | { | |
048d532d PA |
628 | /* We've already warned about this library, when trying to open |
629 | it. */ | |
8bb75286 | 630 | } |
42a6e6a0 MK |
631 | else |
632 | { | |
048d532d PA |
633 | volatile struct gdb_exception e; |
634 | ||
635 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
636 | { | |
637 | struct section_addr_info *sap; | |
638 | ||
639 | /* Have we already loaded this shared object? */ | |
640 | ALL_OBJFILES (so->objfile) | |
641 | { | |
0ba1096a | 642 | if (filename_cmp (so->objfile->name, so->so_name) == 0 |
e4f6d2ec | 643 | && so->objfile->addr_low == so->addr_low) |
048d532d PA |
644 | break; |
645 | } | |
646 | if (so->objfile != NULL) | |
647 | break; | |
648 | ||
649 | sap = build_section_addr_info_from_section_table (so->sections, | |
650 | so->sections_end); | |
651 | so->objfile = symbol_file_add_from_bfd (so->abfd, | |
63524580 JK |
652 | flags, sap, OBJF_SHARED, |
653 | NULL); | |
e4f6d2ec | 654 | so->objfile->addr_low = so->addr_low; |
048d532d PA |
655 | free_section_addr_info (sap); |
656 | } | |
657 | ||
658 | if (e.reason < 0) | |
14ad3217 JK |
659 | exception_fprintf (gdb_stderr, e, _("Error while reading shared" |
660 | " library symbols for %s:\n"), | |
661 | so->so_name); | |
048d532d PA |
662 | else |
663 | { | |
664 | if (from_tty || info_verbose) | |
665 | printf_unfiltered (_("Loaded symbols for %s\n"), so->so_name); | |
666 | so->symbols_loaded = 1; | |
667 | } | |
7eedccfa | 668 | return 1; |
42a6e6a0 MK |
669 | } |
670 | ||
671 | return 0; | |
672 | } | |
c906108c | 673 | |
07cd4b97 | 674 | /* LOCAL FUNCTION |
c906108c | 675 | |
105b175f | 676 | update_solib_list --- synchronize GDB's shared object list with inferior's |
c906108c | 677 | |
c5aa993b | 678 | SYNOPSIS |
c906108c | 679 | |
105b175f | 680 | void update_solib_list (int from_tty, struct target_ops *TARGET) |
c906108c | 681 | |
07cd4b97 | 682 | Extract the list of currently loaded shared objects from the |
105b175f JB |
683 | inferior, and compare it with the list of shared objects currently |
684 | in GDB's so_list_head list. Edit so_list_head to bring it in sync | |
685 | with the inferior's new list. | |
c906108c | 686 | |
105b175f JB |
687 | If we notice that the inferior has unloaded some shared objects, |
688 | free any symbolic info GDB had read about those shared objects. | |
689 | ||
690 | Don't load symbolic info for any new shared objects; just add them | |
691 | to the list, and leave their symbols_loaded flag clear. | |
07cd4b97 JB |
692 | |
693 | If FROM_TTY is non-null, feel free to print messages about what | |
694 | we're doing. | |
c906108c | 695 | |
07cd4b97 JB |
696 | If TARGET is non-null, add the sections of all new shared objects |
697 | to TARGET's section table. Note that this doesn't remove any | |
698 | sections for shared objects that have been unloaded, and it | |
699 | doesn't check to see if the new shared objects are already present in | |
700 | the section table. But we only use this for core files and | |
701 | processes we've just attached to, so that's okay. */ | |
c906108c | 702 | |
a78f21af | 703 | static void |
105b175f | 704 | update_solib_list (int from_tty, struct target_ops *target) |
07cd4b97 | 705 | { |
1cf3db46 | 706 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 707 | struct so_list *inferior = ops->current_sos(); |
07cd4b97 JB |
708 | struct so_list *gdb, **gdb_link; |
709 | ||
181e7f93 PA |
710 | /* We can reach here due to changing solib-search-path or the |
711 | sysroot, before having any inferior. */ | |
50c71eaf | 712 | if (target_has_execution && !ptid_equal (inferior_ptid, null_ptid)) |
181e7f93 PA |
713 | { |
714 | struct inferior *inf = current_inferior (); | |
715 | ||
716 | /* If we are attaching to a running process for which we | |
717 | have not opened a symbol file, we may be able to get its | |
718 | symbols now! */ | |
719 | if (inf->attach_flag && symfile_objfile == NULL) | |
720 | catch_errors (ops->open_symbol_file_object, &from_tty, | |
721 | "Error reading attached process's symbol file.\n", | |
722 | RETURN_MASK_ALL); | |
723 | } | |
104c1213 | 724 | |
07cd4b97 JB |
725 | /* GDB and the inferior's dynamic linker each maintain their own |
726 | list of currently loaded shared objects; we want to bring the | |
727 | former in sync with the latter. Scan both lists, seeing which | |
728 | shared objects appear where. There are three cases: | |
729 | ||
730 | - A shared object appears on both lists. This means that GDB | |
105b175f JB |
731 | knows about it already, and it's still loaded in the inferior. |
732 | Nothing needs to happen. | |
07cd4b97 JB |
733 | |
734 | - A shared object appears only on GDB's list. This means that | |
105b175f JB |
735 | the inferior has unloaded it. We should remove the shared |
736 | object from GDB's tables. | |
07cd4b97 JB |
737 | |
738 | - A shared object appears only on the inferior's list. This | |
105b175f JB |
739 | means that it's just been loaded. We should add it to GDB's |
740 | tables. | |
07cd4b97 JB |
741 | |
742 | So we walk GDB's list, checking each entry to see if it appears | |
743 | in the inferior's list too. If it does, no action is needed, and | |
744 | we remove it from the inferior's list. If it doesn't, the | |
745 | inferior has unloaded it, and we remove it from GDB's list. By | |
746 | the time we're done walking GDB's list, the inferior's list | |
747 | contains only the new shared objects, which we then add. */ | |
748 | ||
749 | gdb = so_list_head; | |
750 | gdb_link = &so_list_head; | |
751 | while (gdb) | |
c906108c | 752 | { |
07cd4b97 JB |
753 | struct so_list *i = inferior; |
754 | struct so_list **i_link = &inferior; | |
755 | ||
756 | /* Check to see whether the shared object *gdb also appears in | |
757 | the inferior's current list. */ | |
758 | while (i) | |
c906108c | 759 | { |
a7c02bc8 VP |
760 | if (ops->same) |
761 | { | |
762 | if (ops->same (gdb, i)) | |
763 | break; | |
764 | } | |
765 | else | |
766 | { | |
0ba1096a | 767 | if (! filename_cmp (gdb->so_original_name, i->so_original_name)) |
a7c02bc8 VP |
768 | break; |
769 | } | |
07cd4b97 JB |
770 | |
771 | i_link = &i->next; | |
772 | i = *i_link; | |
c906108c | 773 | } |
c5aa993b | 774 | |
07cd4b97 JB |
775 | /* If the shared object appears on the inferior's list too, then |
776 | it's still loaded, so we don't need to do anything. Delete | |
777 | it from the inferior's list, and leave it on GDB's list. */ | |
778 | if (i) | |
c906108c | 779 | { |
07cd4b97 | 780 | *i_link = i->next; |
07cd4b97 JB |
781 | free_so (i); |
782 | gdb_link = &gdb->next; | |
783 | gdb = *gdb_link; | |
784 | } | |
785 | ||
786 | /* If it's not on the inferior's list, remove it from GDB's tables. */ | |
787 | else | |
788 | { | |
42a6e6a0 MK |
789 | /* Notify any observer that the shared object has been |
790 | unloaded before we remove it from GDB's tables. */ | |
84acb35a JJ |
791 | observer_notify_solib_unloaded (gdb); |
792 | ||
07cd4b97 | 793 | *gdb_link = gdb->next; |
07cd4b97 JB |
794 | |
795 | /* Unless the user loaded it explicitly, free SO's objfile. */ | |
e8930304 | 796 | if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED)) |
07cd4b97 JB |
797 | free_objfile (gdb->objfile); |
798 | ||
799 | /* Some targets' section tables might be referring to | |
800 | sections from so->abfd; remove them. */ | |
801 | remove_target_sections (gdb->abfd); | |
802 | ||
803 | free_so (gdb); | |
804 | gdb = *gdb_link; | |
c906108c SS |
805 | } |
806 | } | |
c5aa993b | 807 | |
07cd4b97 JB |
808 | /* Now the inferior's list contains only shared objects that don't |
809 | appear in GDB's list --- those that are newly loaded. Add them | |
e8930304 | 810 | to GDB's shared object list. */ |
07cd4b97 | 811 | if (inferior) |
c906108c | 812 | { |
048d532d PA |
813 | int not_found = 0; |
814 | const char *not_found_filename = NULL; | |
815 | ||
07cd4b97 JB |
816 | struct so_list *i; |
817 | ||
818 | /* Add the new shared objects to GDB's list. */ | |
819 | *gdb_link = inferior; | |
820 | ||
e8930304 | 821 | /* Fill in the rest of each of the `struct so_list' nodes. */ |
07cd4b97 | 822 | for (i = inferior; i; i = i->next) |
c906108c | 823 | { |
048d532d PA |
824 | volatile struct gdb_exception e; |
825 | ||
6c95b8df | 826 | i->pspace = current_program_space; |
07cd4b97 | 827 | |
048d532d PA |
828 | TRY_CATCH (e, RETURN_MASK_ERROR) |
829 | { | |
830 | /* Fill in the rest of the `struct so_list' node. */ | |
831 | if (!solib_map_sections (i)) | |
832 | { | |
833 | not_found++; | |
834 | if (not_found_filename == NULL) | |
835 | not_found_filename = i->so_original_name; | |
836 | } | |
837 | } | |
07cd4b97 | 838 | |
048d532d | 839 | if (e.reason < 0) |
3e43a32a MS |
840 | exception_fprintf (gdb_stderr, e, |
841 | _("Error while mapping shared " | |
842 | "library sections:\n")); | |
42a6e6a0 MK |
843 | |
844 | /* Notify any observer that the shared object has been | |
048d532d | 845 | loaded now that we've added it to GDB's tables. */ |
42a6e6a0 | 846 | observer_notify_solib_loaded (i); |
c906108c | 847 | } |
048d532d PA |
848 | |
849 | /* If a library was not found, issue an appropriate warning | |
850 | message. We have to use a single call to warning in case the | |
851 | front end does something special with warnings, e.g., pop up | |
852 | a dialog box. It Would Be Nice if we could get a "warning: " | |
853 | prefix on each line in the CLI front end, though - it doesn't | |
854 | stand out well. */ | |
855 | ||
856 | if (not_found == 1) | |
3e43a32a MS |
857 | warning (_("Could not load shared library symbols for %s.\n" |
858 | "Do you need \"set solib-search-path\" " | |
859 | "or \"set sysroot\"?"), | |
048d532d PA |
860 | not_found_filename); |
861 | else if (not_found > 1) | |
862 | warning (_("\ | |
863 | Could not load shared library symbols for %d libraries, e.g. %s.\n\ | |
864 | Use the \"info sharedlibrary\" command to see the complete listing.\n\ | |
865 | Do you need \"set solib-search-path\" or \"set sysroot\"?"), | |
866 | not_found, not_found_filename); | |
e8930304 | 867 | } |
105b175f JB |
868 | } |
869 | ||
17a37d48 PP |
870 | |
871 | /* Return non-zero if NAME is the libpthread shared library. | |
6612ad7f JB |
872 | |
873 | Uses a fairly simplistic heuristic approach where we check | |
874 | the file name against "/libpthread". This can lead to false | |
875 | positives, but this should be good enough in practice. */ | |
876 | ||
17a37d48 PP |
877 | int |
878 | libpthread_name_p (const char *name) | |
879 | { | |
880 | return (strstr (name, "/libpthread") != NULL); | |
881 | } | |
882 | ||
883 | /* Return non-zero if SO is the libpthread shared library. */ | |
884 | ||
6612ad7f JB |
885 | static int |
886 | libpthread_solib_p (struct so_list *so) | |
887 | { | |
17a37d48 | 888 | return libpthread_name_p (so->so_name); |
6612ad7f | 889 | } |
105b175f JB |
890 | |
891 | /* GLOBAL FUNCTION | |
892 | ||
893 | solib_add -- read in symbol info for newly added shared libraries | |
894 | ||
895 | SYNOPSIS | |
896 | ||
990f9fe3 FF |
897 | void solib_add (char *pattern, int from_tty, struct target_ops |
898 | *TARGET, int readsyms) | |
105b175f JB |
899 | |
900 | DESCRIPTION | |
901 | ||
902 | Read in symbolic information for any shared objects whose names | |
903 | match PATTERN. (If we've already read a shared object's symbol | |
904 | info, leave it alone.) If PATTERN is zero, read them all. | |
905 | ||
990f9fe3 FF |
906 | If READSYMS is 0, defer reading symbolic information until later |
907 | but still do any needed low level processing. | |
908 | ||
105b175f JB |
909 | FROM_TTY and TARGET are as described for update_solib_list, above. */ |
910 | ||
911 | void | |
3e43a32a MS |
912 | solib_add (char *pattern, int from_tty, |
913 | struct target_ops *target, int readsyms) | |
105b175f JB |
914 | { |
915 | struct so_list *gdb; | |
916 | ||
2eff07b3 PP |
917 | current_program_space->solib_add_generation++; |
918 | ||
105b175f JB |
919 | if (pattern) |
920 | { | |
921 | char *re_err = re_comp (pattern); | |
922 | ||
923 | if (re_err) | |
8a3fe4f8 | 924 | error (_("Invalid regexp: %s"), re_err); |
105b175f JB |
925 | } |
926 | ||
927 | update_solib_list (from_tty, target); | |
c906108c | 928 | |
105b175f JB |
929 | /* Walk the list of currently loaded shared libraries, and read |
930 | symbols for any that match the pattern --- or any whose symbols | |
931 | aren't already loaded, if no pattern was given. */ | |
e8930304 JB |
932 | { |
933 | int any_matches = 0; | |
934 | int loaded_any_symbols = 0; | |
7eedccfa PP |
935 | const int flags = |
936 | SYMFILE_DEFER_BP_RESET | (from_tty ? SYMFILE_VERBOSE : 0); | |
c906108c | 937 | |
e8930304 JB |
938 | for (gdb = so_list_head; gdb; gdb = gdb->next) |
939 | if (! pattern || re_exec (gdb->so_name)) | |
940 | { | |
6612ad7f JB |
941 | /* Normally, we would read the symbols from that library |
942 | only if READSYMS is set. However, we're making a small | |
943 | exception for the pthread library, because we sometimes | |
944 | need the library symbols to be loaded in order to provide | |
945 | thread support (x86-linux for instance). */ | |
946 | const int add_this_solib = | |
947 | (readsyms || libpthread_solib_p (gdb)); | |
948 | ||
e8930304 | 949 | any_matches = 1; |
a86988f2 PA |
950 | if (add_this_solib) |
951 | { | |
952 | if (gdb->symbols_loaded) | |
953 | { | |
954 | /* If no pattern was given, be quiet for shared | |
955 | libraries we have already loaded. */ | |
956 | if (pattern && (from_tty || info_verbose)) | |
957 | printf_unfiltered (_("Symbols already loaded for %s\n"), | |
958 | gdb->so_name); | |
959 | } | |
960 | else if (solib_read_symbols (gdb, flags)) | |
961 | loaded_any_symbols = 1; | |
962 | } | |
e8930304 JB |
963 | } |
964 | ||
7eedccfa PP |
965 | if (loaded_any_symbols) |
966 | breakpoint_re_set (); | |
967 | ||
e8930304 JB |
968 | if (from_tty && pattern && ! any_matches) |
969 | printf_unfiltered | |
970 | ("No loaded shared libraries match the pattern `%s'.\n", pattern); | |
971 | ||
972 | if (loaded_any_symbols) | |
973 | { | |
1cf3db46 | 974 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 975 | |
e8930304 JB |
976 | /* Getting new symbols may change our opinion about what is |
977 | frameless. */ | |
978 | reinit_frame_cache (); | |
979 | ||
66aba65d | 980 | ops->special_symbol_handling (); |
e8930304 JB |
981 | } |
982 | } | |
c906108c SS |
983 | } |
984 | ||
07cd4b97 | 985 | |
c906108c SS |
986 | /* |
987 | ||
c5aa993b | 988 | LOCAL FUNCTION |
c906108c | 989 | |
c5aa993b | 990 | info_sharedlibrary_command -- code for "info sharedlibrary" |
c906108c | 991 | |
c5aa993b | 992 | SYNOPSIS |
c906108c | 993 | |
c5aa993b | 994 | static void info_sharedlibrary_command () |
c906108c | 995 | |
c5aa993b | 996 | DESCRIPTION |
c906108c | 997 | |
c5aa993b | 998 | Walk through the shared library list and print information |
55333a84 DE |
999 | about each attached library matching PATTERN. If PATTERN is elided, |
1000 | print them all. | |
c5aa993b | 1001 | */ |
c906108c SS |
1002 | |
1003 | static void | |
55333a84 | 1004 | info_sharedlibrary_command (char *pattern, int from_tty) |
c906108c | 1005 | { |
52f0bd74 | 1006 | struct so_list *so = NULL; /* link map state variable */ |
55333a84 | 1007 | int so_missing_debug_info = 0; |
c906108c | 1008 | int addr_width; |
55333a84 DE |
1009 | int nr_libs; |
1010 | struct cleanup *table_cleanup; | |
1011 | struct gdbarch *gdbarch = target_gdbarch; | |
79a45e25 | 1012 | struct ui_out *uiout = current_uiout; |
55333a84 DE |
1013 | |
1014 | if (pattern) | |
1015 | { | |
1016 | char *re_err = re_comp (pattern); | |
1017 | ||
1018 | if (re_err) | |
1019 | error (_("Invalid regexp: %s"), re_err); | |
1020 | } | |
c906108c | 1021 | |
84eb3c4f | 1022 | /* "0x", a little whitespace, and two hex digits per byte of pointers. */ |
55333a84 | 1023 | addr_width = 4 + (gdbarch_ptr_bit (gdbarch) / 4); |
c906108c | 1024 | |
105b175f | 1025 | update_solib_list (from_tty, 0); |
07cd4b97 | 1026 | |
55333a84 DE |
1027 | /* make_cleanup_ui_out_table_begin_end needs to know the number of |
1028 | rows, so we need to make two passes over the libs. */ | |
1029 | ||
1030 | for (nr_libs = 0, so = so_list_head; so; so = so->next) | |
c906108c | 1031 | { |
c5aa993b | 1032 | if (so->so_name[0]) |
c906108c | 1033 | { |
55333a84 DE |
1034 | if (pattern && ! re_exec (so->so_name)) |
1035 | continue; | |
1036 | ++nr_libs; | |
1037 | } | |
1038 | } | |
1039 | ||
1040 | table_cleanup = | |
1041 | make_cleanup_ui_out_table_begin_end (uiout, 4, nr_libs, | |
1042 | "SharedLibraryTable"); | |
1043 | ||
1044 | /* The "- 1" is because ui_out adds one space between columns. */ | |
1045 | ui_out_table_header (uiout, addr_width - 1, ui_left, "from", "From"); | |
1046 | ui_out_table_header (uiout, addr_width - 1, ui_left, "to", "To"); | |
1047 | ui_out_table_header (uiout, 12 - 1, ui_left, "syms-read", "Syms Read"); | |
1048 | ui_out_table_header (uiout, 0, ui_noalign, | |
1049 | "name", "Shared Object Library"); | |
1050 | ||
1051 | ui_out_table_body (uiout); | |
1052 | ||
1053 | for (so = so_list_head; so; so = so->next) | |
1054 | { | |
1055 | struct cleanup *lib_cleanup; | |
c906108c | 1056 | |
55333a84 DE |
1057 | if (! so->so_name[0]) |
1058 | continue; | |
1059 | if (pattern && ! re_exec (so->so_name)) | |
1060 | continue; | |
1061 | ||
1062 | lib_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, "lib"); | |
1063 | ||
1064 | if (so->addr_high != 0) | |
1065 | { | |
1066 | ui_out_field_core_addr (uiout, "from", gdbarch, so->addr_low); | |
1067 | ui_out_field_core_addr (uiout, "to", gdbarch, so->addr_high); | |
1068 | } | |
1069 | else | |
1070 | { | |
1071 | ui_out_field_skip (uiout, "from"); | |
1072 | ui_out_field_skip (uiout, "to"); | |
c906108c | 1073 | } |
55333a84 DE |
1074 | |
1075 | if (! ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ())) | |
1076 | && so->symbols_loaded | |
e0ae4240 | 1077 | && !objfile_has_symbols (so->objfile)) |
55333a84 DE |
1078 | { |
1079 | so_missing_debug_info = 1; | |
1080 | ui_out_field_string (uiout, "syms-read", "Yes (*)"); | |
1081 | } | |
1082 | else | |
1083 | ui_out_field_string (uiout, "syms-read", | |
1084 | so->symbols_loaded ? "Yes" : "No"); | |
1085 | ||
1086 | ui_out_field_string (uiout, "name", so->so_name); | |
1087 | ||
1088 | ui_out_text (uiout, "\n"); | |
1089 | ||
1090 | do_cleanups (lib_cleanup); | |
c906108c | 1091 | } |
55333a84 DE |
1092 | |
1093 | do_cleanups (table_cleanup); | |
1094 | ||
1095 | if (nr_libs == 0) | |
1096 | { | |
1097 | if (pattern) | |
1098 | ui_out_message (uiout, 0, | |
1099 | _("No shared libraries matched.\n")); | |
1100 | else | |
1101 | ui_out_message (uiout, 0, | |
1102 | _("No shared libraries loaded at this time.\n")); | |
1103 | } | |
1104 | else | |
c906108c | 1105 | { |
55333a84 DE |
1106 | if (so_missing_debug_info) |
1107 | ui_out_message (uiout, 0, | |
3e43a32a MS |
1108 | _("(*): Shared library is missing " |
1109 | "debugging information.\n")); | |
c906108c SS |
1110 | } |
1111 | } | |
1112 | ||
5fd1a349 PP |
1113 | /* Return 1 if ADDRESS lies within SOLIB. */ |
1114 | ||
1115 | int | |
1116 | solib_contains_address_p (const struct so_list *const solib, | |
1117 | CORE_ADDR address) | |
1118 | { | |
0542c86d | 1119 | struct target_section *p; |
5fd1a349 PP |
1120 | |
1121 | for (p = solib->sections; p < solib->sections_end; p++) | |
1122 | if (p->addr <= address && address < p->endaddr) | |
1123 | return 1; | |
1124 | ||
1125 | return 0; | |
1126 | } | |
1127 | ||
c906108c SS |
1128 | /* |
1129 | ||
c5aa993b | 1130 | GLOBAL FUNCTION |
c906108c | 1131 | |
f5c9a895 PP |
1132 | solib_name_from_address -- if an address is in a shared lib, return |
1133 | its name. | |
c906108c | 1134 | |
c5aa993b | 1135 | SYNOPSIS |
c906108c | 1136 | |
f5c9a895 | 1137 | char * solib_name_from_address (CORE_ADDR address) |
c906108c | 1138 | |
c5aa993b | 1139 | DESCRIPTION |
c906108c | 1140 | |
c5aa993b JM |
1141 | Provides a hook for other gdb routines to discover whether or |
1142 | not a particular address is within the mapped address space of | |
749499cb | 1143 | a shared library. |
c906108c | 1144 | |
c5aa993b JM |
1145 | For example, this routine is called at one point to disable |
1146 | breakpoints which are in shared libraries that are not currently | |
1147 | mapped in. | |
c906108c SS |
1148 | */ |
1149 | ||
1150 | char * | |
6c95b8df | 1151 | solib_name_from_address (struct program_space *pspace, CORE_ADDR address) |
c906108c | 1152 | { |
6c95b8df | 1153 | struct so_list *so = NULL; |
c5aa993b | 1154 | |
6c95b8df | 1155 | for (so = pspace->so_list; so; so = so->next) |
5fd1a349 PP |
1156 | if (solib_contains_address_p (so, address)) |
1157 | return (so->so_name); | |
07cd4b97 | 1158 | |
c906108c SS |
1159 | return (0); |
1160 | } | |
1161 | ||
de18c1d8 JM |
1162 | /* Return whether the data starting at VADDR, size SIZE, must be kept |
1163 | in a core file for shared libraries loaded before "gcore" is used | |
1164 | to be handled correctly when the core file is loaded. This only | |
1165 | applies when the section would otherwise not be kept in the core | |
1166 | file (in particular, for readonly sections). */ | |
1167 | ||
1168 | int | |
1169 | solib_keep_data_in_core (CORE_ADDR vaddr, unsigned long size) | |
1170 | { | |
1171 | struct target_so_ops *ops = solib_ops (target_gdbarch); | |
1172 | ||
1173 | if (ops->keep_data_in_core) | |
1174 | return ops->keep_data_in_core (vaddr, size); | |
1175 | else | |
1176 | return 0; | |
1177 | } | |
1178 | ||
c906108c SS |
1179 | /* Called by free_all_symtabs */ |
1180 | ||
c5aa993b | 1181 | void |
fba45db2 | 1182 | clear_solib (void) |
c906108c | 1183 | { |
1cf3db46 | 1184 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 1185 | |
085dd6e6 JM |
1186 | /* This function is expected to handle ELF shared libraries. It is |
1187 | also used on Solaris, which can run either ELF or a.out binaries | |
1188 | (for compatibility with SunOS 4), both of which can use shared | |
1189 | libraries. So we don't know whether we have an ELF executable or | |
1190 | an a.out executable until the user chooses an executable file. | |
1191 | ||
1192 | ELF shared libraries don't get mapped into the address space | |
1193 | until after the program starts, so we'd better not try to insert | |
1194 | breakpoints in them immediately. We have to wait until the | |
1195 | dynamic linker has loaded them; we'll hit a bp_shlib_event | |
1196 | breakpoint (look for calls to create_solib_event_breakpoint) when | |
1197 | it's ready. | |
1198 | ||
1199 | SunOS shared libraries seem to be different --- they're present | |
1200 | as soon as the process begins execution, so there's no need to | |
1201 | put off inserting breakpoints. There's also nowhere to put a | |
1202 | bp_shlib_event breakpoint, so if we put it off, we'll never get | |
1203 | around to it. | |
1204 | ||
1205 | So: disable breakpoints only if we're using ELF shared libs. */ | |
1206 | if (exec_bfd != NULL | |
1207 | && bfd_get_flavour (exec_bfd) != bfd_target_aout_flavour) | |
cb851954 | 1208 | disable_breakpoints_in_shlibs (); |
085dd6e6 | 1209 | |
c906108c SS |
1210 | while (so_list_head) |
1211 | { | |
07cd4b97 | 1212 | struct so_list *so = so_list_head; |
433759f7 | 1213 | |
07cd4b97 | 1214 | so_list_head = so->next; |
c86cf029 | 1215 | observer_notify_solib_unloaded (so); |
2069d78d KB |
1216 | if (so->abfd) |
1217 | remove_target_sections (so->abfd); | |
07cd4b97 | 1218 | free_so (so); |
c906108c | 1219 | } |
07cd4b97 | 1220 | |
66aba65d | 1221 | ops->clear_solib (); |
c906108c SS |
1222 | } |
1223 | ||
13437d4b | 1224 | /* GLOBAL FUNCTION |
c5aa993b JM |
1225 | |
1226 | solib_create_inferior_hook -- shared library startup support | |
1227 | ||
1228 | SYNOPSIS | |
1229 | ||
268a4a75 | 1230 | void solib_create_inferior_hook (int from_tty) |
c5aa993b JM |
1231 | |
1232 | DESCRIPTION | |
1233 | ||
1234 | When gdb starts up the inferior, it nurses it along (through the | |
1235 | shell) until it is ready to execute it's first instruction. At this | |
1236 | point, this function gets called via expansion of the macro | |
13437d4b | 1237 | SOLIB_CREATE_INFERIOR_HOOK. */ |
c5aa993b JM |
1238 | |
1239 | void | |
268a4a75 | 1240 | solib_create_inferior_hook (int from_tty) |
c906108c | 1241 | { |
1cf3db46 | 1242 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
433759f7 | 1243 | |
268a4a75 | 1244 | ops->solib_create_inferior_hook (from_tty); |
c906108c SS |
1245 | } |
1246 | ||
d7fa2ae2 KB |
1247 | /* GLOBAL FUNCTION |
1248 | ||
1249 | in_solib_dynsym_resolve_code -- check to see if an address is in | |
1250 | dynamic loader's dynamic symbol | |
1251 | resolution code | |
1252 | ||
1253 | SYNOPSIS | |
1254 | ||
1255 | int in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
1256 | ||
1257 | DESCRIPTION | |
1258 | ||
1259 | Determine if PC is in the dynamic linker's symbol resolution | |
1260 | code. Return 1 if so, 0 otherwise. | |
1261 | */ | |
1262 | ||
1263 | int | |
1264 | in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
1265 | { | |
1cf3db46 | 1266 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
433759f7 | 1267 | |
66aba65d | 1268 | return ops->in_dynsym_resolve_code (pc); |
d7fa2ae2 | 1269 | } |
c906108c SS |
1270 | |
1271 | /* | |
1272 | ||
c5aa993b | 1273 | LOCAL FUNCTION |
c906108c | 1274 | |
c5aa993b | 1275 | sharedlibrary_command -- handle command to explicitly add library |
c906108c | 1276 | |
c5aa993b | 1277 | SYNOPSIS |
c906108c | 1278 | |
c5aa993b | 1279 | static void sharedlibrary_command (char *args, int from_tty) |
c906108c | 1280 | |
c5aa993b | 1281 | DESCRIPTION |
c906108c | 1282 | |
c5aa993b | 1283 | */ |
c906108c SS |
1284 | |
1285 | static void | |
fba45db2 | 1286 | sharedlibrary_command (char *args, int from_tty) |
c906108c SS |
1287 | { |
1288 | dont_repeat (); | |
990f9fe3 | 1289 | solib_add (args, from_tty, (struct target_ops *) 0, 1); |
c906108c SS |
1290 | } |
1291 | ||
cb0ba49e MS |
1292 | /* LOCAL FUNCTION |
1293 | ||
1294 | no_shared_libraries -- handle command to explicitly discard symbols | |
1295 | from shared libraries. | |
1296 | ||
1297 | DESCRIPTION | |
1298 | ||
1299 | Implements the command "nosharedlibrary", which discards symbols | |
1300 | that have been auto-loaded from shared libraries. Symbols from | |
1301 | shared libraries that were added by explicit request of the user | |
1302 | are not discarded. Also called from remote.c. */ | |
1303 | ||
c60a7562 MS |
1304 | void |
1305 | no_shared_libraries (char *ignored, int from_tty) | |
1306 | { | |
a3247a22 PP |
1307 | /* The order of the two routines below is important: clear_solib notifies |
1308 | the solib_unloaded observers, and some of these observers might need | |
1309 | access to their associated objfiles. Therefore, we can not purge the | |
1310 | solibs' objfiles before clear_solib has been called. */ | |
1311 | ||
615b9dba | 1312 | clear_solib (); |
a3247a22 | 1313 | objfile_purge_solibs (); |
c60a7562 | 1314 | } |
c906108c | 1315 | |
a86988f2 PA |
1316 | /* Reload shared libraries, but avoid reloading the same symbol file |
1317 | we already have loaded. */ | |
1318 | ||
1319 | static void | |
1320 | reload_shared_libraries_1 (int from_tty) | |
1321 | { | |
1322 | struct so_list *so; | |
1323 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
1324 | ||
1325 | for (so = so_list_head; so != NULL; so = so->next) | |
1326 | { | |
1327 | char *filename, *found_pathname = NULL; | |
1328 | bfd *abfd; | |
a86988f2 PA |
1329 | int was_loaded = so->symbols_loaded; |
1330 | const int flags = | |
1331 | SYMFILE_DEFER_BP_RESET | (from_tty ? SYMFILE_VERBOSE : 0); | |
1332 | ||
1333 | filename = tilde_expand (so->so_original_name); | |
42b1321c | 1334 | make_cleanup (xfree, filename); |
a86988f2 PA |
1335 | abfd = solib_bfd_open (filename); |
1336 | if (abfd != NULL) | |
1337 | { | |
1338 | found_pathname = xstrdup (bfd_get_filename (abfd)); | |
1339 | make_cleanup (xfree, found_pathname); | |
1340 | gdb_bfd_close_or_warn (abfd); | |
1341 | } | |
1342 | ||
1343 | /* If this shared library is no longer associated with its previous | |
1344 | symbol file, close that. */ | |
1345 | if ((found_pathname == NULL && was_loaded) | |
1346 | || (found_pathname != NULL | |
0ba1096a | 1347 | && filename_cmp (found_pathname, so->so_name) != 0)) |
a86988f2 PA |
1348 | { |
1349 | if (so->objfile && ! (so->objfile->flags & OBJF_USERLOADED)) | |
1350 | free_objfile (so->objfile); | |
1351 | remove_target_sections (so->abfd); | |
1352 | free_so_symbols (so); | |
1353 | } | |
1354 | ||
1355 | /* If this shared library is now associated with a new symbol | |
1356 | file, open it. */ | |
1357 | if (found_pathname != NULL | |
1358 | && (!was_loaded | |
0ba1096a | 1359 | || filename_cmp (found_pathname, so->so_name) != 0)) |
a86988f2 PA |
1360 | { |
1361 | volatile struct gdb_exception e; | |
1362 | ||
1363 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
1364 | solib_map_sections (so); | |
1365 | ||
1366 | if (e.reason < 0) | |
3e43a32a MS |
1367 | exception_fprintf (gdb_stderr, e, |
1368 | _("Error while mapping " | |
1369 | "shared library sections:\n")); | |
a86988f2 PA |
1370 | else if (auto_solib_add || was_loaded || libpthread_solib_p (so)) |
1371 | solib_read_symbols (so, flags); | |
1372 | } | |
1373 | } | |
1374 | ||
1375 | do_cleanups (old_chain); | |
1376 | } | |
1377 | ||
cf466558 | 1378 | static void |
f397e303 AC |
1379 | reload_shared_libraries (char *ignored, int from_tty, |
1380 | struct cmd_list_element *e) | |
cf466558 | 1381 | { |
a86988f2 PA |
1382 | struct target_so_ops *ops; |
1383 | ||
1384 | reload_shared_libraries_1 (from_tty); | |
1385 | ||
1386 | ops = solib_ops (target_gdbarch); | |
1387 | ||
c378eb4e | 1388 | /* Creating inferior hooks here has two purposes. First, if we reload |
c8fa6cdd VP |
1389 | shared libraries then the address of solib breakpoint we've computed |
1390 | previously might be no longer valid. For example, if we forgot to set | |
1391 | solib-absolute-prefix and are setting it right now, then the previous | |
1392 | breakpoint address is plain wrong. Second, installing solib hooks | |
1393 | also implicitly figures were ld.so is and loads symbols for it. | |
1394 | Absent this call, if we've just connected to a target and set | |
1395 | solib-absolute-prefix or solib-search-path, we'll lose all information | |
1396 | about ld.so. */ | |
1397 | if (target_has_execution) | |
1398 | { | |
a86988f2 PA |
1399 | /* Reset or free private data structures not associated with |
1400 | so_list entries. */ | |
1401 | ops->clear_solib (); | |
1402 | ||
1403 | /* Remove any previous solib event breakpoint. This is usually | |
1404 | done in common code, at breakpoint_init_inferior time, but | |
1405 | we're not really starting up the inferior here. */ | |
1406 | remove_solib_event_breakpoints (); | |
1407 | ||
c8fa6cdd VP |
1408 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
1409 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
1410 | #else | |
268a4a75 | 1411 | solib_create_inferior_hook (from_tty); |
c8fa6cdd VP |
1412 | #endif |
1413 | } | |
268a4a75 JK |
1414 | |
1415 | /* Sometimes the platform-specific hook loads initial shared | |
1416 | libraries, and sometimes it doesn't. If it doesn't FROM_TTY will be | |
1417 | incorrectly 0 but such solib targets should be fixed anyway. If we | |
1418 | made all the inferior hook methods consistent, this call could be | |
1419 | removed. Call it only after the solib target has been initialized by | |
1420 | solib_create_inferior_hook. */ | |
1421 | ||
1422 | solib_add (NULL, 0, NULL, auto_solib_add); | |
1423 | ||
a86988f2 PA |
1424 | breakpoint_re_set (); |
1425 | ||
1426 | /* We may have loaded or unloaded debug info for some (or all) | |
1427 | shared libraries. However, frames may still reference them. For | |
1428 | example, a frame's unwinder might still point at DWARF FDE | |
1429 | structures that are now freed. Also, getting new symbols may | |
1430 | change our opinion about what is frameless. */ | |
c8fa6cdd | 1431 | reinit_frame_cache (); |
a86988f2 PA |
1432 | |
1433 | ops->special_symbol_handling (); | |
cf466558 KB |
1434 | } |
1435 | ||
920d2a44 AC |
1436 | static void |
1437 | show_auto_solib_add (struct ui_file *file, int from_tty, | |
1438 | struct cmd_list_element *c, const char *value) | |
1439 | { | |
1440 | fprintf_filtered (file, _("Autoloading of shared library symbols is %s.\n"), | |
1441 | value); | |
1442 | } | |
1443 | ||
1444 | ||
3a40aaa0 UW |
1445 | /* Handler for library-specific lookup of global symbol NAME in OBJFILE. Call |
1446 | the library-specific handler if it is installed for the current target. */ | |
1447 | ||
1448 | struct symbol * | |
1449 | solib_global_lookup (const struct objfile *objfile, | |
1450 | const char *name, | |
21b556f4 | 1451 | const domain_enum domain) |
3a40aaa0 | 1452 | { |
1cf3db46 | 1453 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
3a40aaa0 | 1454 | |
e8a92f7b | 1455 | if (ops->lookup_lib_global_symbol != NULL) |
94af9270 | 1456 | return ops->lookup_lib_global_symbol (objfile, name, domain); |
3a40aaa0 UW |
1457 | return NULL; |
1458 | } | |
1459 | ||
1460 | ||
a78f21af AC |
1461 | extern initialize_file_ftype _initialize_solib; /* -Wmissing-prototypes */ |
1462 | ||
c906108c | 1463 | void |
fba45db2 | 1464 | _initialize_solib (void) |
c906108c | 1465 | { |
66aba65d MK |
1466 | solib_data = gdbarch_data_register_pre_init (solib_init); |
1467 | ||
c906108c | 1468 | add_com ("sharedlibrary", class_files, sharedlibrary_command, |
1bedd215 | 1469 | _("Load shared object library symbols for files matching REGEXP.")); |
c5aa993b | 1470 | add_info ("sharedlibrary", info_sharedlibrary_command, |
1bedd215 | 1471 | _("Status of loaded shared object libraries.")); |
c60a7562 | 1472 | add_com ("nosharedlibrary", class_files, no_shared_libraries, |
1bedd215 | 1473 | _("Unload all shared object library symbols.")); |
c906108c | 1474 | |
5bf193a2 AC |
1475 | add_setshow_boolean_cmd ("auto-solib-add", class_support, |
1476 | &auto_solib_add, _("\ | |
1477 | Set autoloading of shared library symbols."), _("\ | |
1478 | Show autoloading of shared library symbols."), _("\ | |
b7209cb4 FF |
1479 | If \"on\", symbols from all shared object libraries will be loaded\n\ |
1480 | automatically when the inferior begins execution, when the dynamic linker\n\ | |
1481 | informs gdb that a new library has been loaded, or when attaching to the\n\ | |
3e43a32a MS |
1482 | inferior. Otherwise, symbols must be loaded manually, using \ |
1483 | `sharedlibrary'."), | |
5bf193a2 | 1484 | NULL, |
920d2a44 | 1485 | show_auto_solib_add, |
5bf193a2 | 1486 | &setlist, &showlist); |
c906108c | 1487 | |
f822c95b DJ |
1488 | add_setshow_filename_cmd ("sysroot", class_support, |
1489 | &gdb_sysroot, _("\ | |
1490 | Set an alternate system root."), _("\ | |
1491 | Show the current system root."), _("\ | |
1492 | The system root is used to load absolute shared library symbol files.\n\ | |
1493 | For other (relative) files, you can add directories using\n\ | |
1494 | `set solib-search-path'."), | |
f397e303 AC |
1495 | reload_shared_libraries, |
1496 | NULL, | |
1497 | &setlist, &showlist); | |
c906108c | 1498 | |
f822c95b DJ |
1499 | add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0, |
1500 | &setlist); | |
1501 | add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0, | |
1502 | &showlist); | |
030292b7 | 1503 | |
525226b5 AC |
1504 | add_setshow_optional_filename_cmd ("solib-search-path", class_support, |
1505 | &solib_search_path, _("\ | |
3e43a32a MS |
1506 | Set the search path for loading non-absolute shared library symbol files."), |
1507 | _("\ | |
1508 | Show the search path for loading non-absolute shared library symbol files."), | |
1509 | _("\ | |
1510 | This takes precedence over the environment variables \ | |
1511 | PATH and LD_LIBRARY_PATH."), | |
525226b5 | 1512 | reload_shared_libraries, |
920d2a44 | 1513 | show_solib_search_path, |
525226b5 | 1514 | &setlist, &showlist); |
c906108c | 1515 | } |