Commit | Line | Data |
---|---|---|
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, |
0fb0cc75 | 4 | 2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008, 2009 |
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" |
c906108c | 48 | |
66aba65d MK |
49 | /* Architecture-specific operations. */ |
50 | ||
51 | /* Per-architecture data key. */ | |
52 | static struct gdbarch_data *solib_data; | |
53 | ||
54 | static void * | |
55 | solib_init (struct obstack *obstack) | |
56 | { | |
57 | struct target_so_ops **ops; | |
58 | ||
59 | ops = OBSTACK_ZALLOC (obstack, struct target_so_ops *); | |
60 | *ops = current_target_so_ops; | |
61 | return ops; | |
62 | } | |
63 | ||
64 | static struct target_so_ops * | |
65 | solib_ops (struct gdbarch *gdbarch) | |
66 | { | |
67 | struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data); | |
68 | return *ops; | |
69 | } | |
7d522c90 DJ |
70 | |
71 | /* Set the solib operations for GDBARCH to NEW_OPS. */ | |
72 | ||
73 | void | |
74 | set_solib_ops (struct gdbarch *gdbarch, struct target_so_ops *new_ops) | |
75 | { | |
76 | struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data); | |
77 | *ops = new_ops; | |
78 | } | |
66aba65d MK |
79 | \f |
80 | ||
13437d4b | 81 | /* external data declarations */ |
c906108c | 82 | |
7d522c90 DJ |
83 | /* FIXME: gdbarch needs to control this variable, or else every |
84 | configuration needs to call set_solib_ops. */ | |
13437d4b | 85 | struct target_so_ops *current_target_so_ops; |
23e04971 MS |
86 | |
87 | /* local data declarations */ | |
07cd4b97 | 88 | |
c906108c | 89 | static struct so_list *so_list_head; /* List of known shared objects */ |
23e04971 | 90 | |
c906108c SS |
91 | /* Local function prototypes */ |
92 | ||
c906108c SS |
93 | /* If non-empty, this is a search path for loading non-absolute shared library |
94 | symbol files. This takes precedence over the environment variables PATH | |
95 | and LD_LIBRARY_PATH. */ | |
96 | static char *solib_search_path = NULL; | |
920d2a44 AC |
97 | static void |
98 | show_solib_search_path (struct ui_file *file, int from_tty, | |
99 | struct cmd_list_element *c, const char *value) | |
100 | { | |
101 | fprintf_filtered (file, _("\ | |
102 | The search path for loading non-absolute shared library symbol files is %s.\n"), | |
103 | value); | |
104 | } | |
c906108c | 105 | |
e4f7b8c8 MS |
106 | /* |
107 | ||
108 | GLOBAL FUNCTION | |
109 | ||
572d275c | 110 | solib_find -- Find a shared library file. |
e4f7b8c8 MS |
111 | |
112 | SYNOPSIS | |
113 | ||
572d275c | 114 | char *solib_find (char *in_pathname, int *fd); |
e4f7b8c8 MS |
115 | |
116 | DESCRIPTION | |
117 | ||
f822c95b | 118 | Global variable GDB_SYSROOT is used as a prefix directory |
e4f7b8c8 MS |
119 | to search for shared libraries if they have an absolute path. |
120 | ||
121 | Global variable SOLIB_SEARCH_PATH is used as a prefix directory | |
122 | (or set of directories, as in LD_LIBRARY_PATH) to search for all | |
f822c95b | 123 | shared libraries if not found in GDB_SYSROOT. |
e4f7b8c8 | 124 | |
c8c18e65 | 125 | Search algorithm: |
f822c95b DJ |
126 | * If there is a gdb_sysroot and path is absolute: |
127 | * Search for gdb_sysroot/path. | |
c8c18e65 KW |
128 | * else |
129 | * Look for it literally (unmodified). | |
e4f7b8c8 | 130 | * Look in SOLIB_SEARCH_PATH. |
f43caff8 | 131 | * If available, use target defined search function. |
f822c95b | 132 | * If gdb_sysroot is NOT set, perform the following two searches: |
c8c18e65 KW |
133 | * Look in inferior's $PATH. |
134 | * Look in inferior's $LD_LIBRARY_PATH. | |
135 | * | |
136 | * The last check avoids doing this search when targetting remote | |
f822c95b | 137 | * machines since gdb_sysroot will almost always be set. |
e4f7b8c8 MS |
138 | |
139 | RETURNS | |
b21f0843 | 140 | |
572d275c UW |
141 | Full pathname of the shared library file, or NULL if not found. |
142 | (The pathname is malloc'ed; it needs to be freed by the caller.) | |
143 | *FD is set to either -1 or an open file handle for the library. */ | |
e4f7b8c8 | 144 | |
572d275c UW |
145 | char * |
146 | solib_find (char *in_pathname, int *fd) | |
e4f7b8c8 | 147 | { |
1cf3db46 | 148 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
e4f7b8c8 MS |
149 | int found_file = -1; |
150 | char *temp_pathname = NULL; | |
f822c95b | 151 | int gdb_sysroot_is_empty; |
58dc52c3 | 152 | |
f822c95b | 153 | gdb_sysroot_is_empty = (gdb_sysroot == NULL || *gdb_sysroot == 0); |
e4f7b8c8 | 154 | |
f822c95b | 155 | if (! IS_ABSOLUTE_PATH (in_pathname) || gdb_sysroot_is_empty) |
f1d10cfb AS |
156 | temp_pathname = in_pathname; |
157 | else | |
e4f7b8c8 | 158 | { |
f822c95b | 159 | int prefix_len = strlen (gdb_sysroot); |
f1d10cfb AS |
160 | |
161 | /* Remove trailing slashes from absolute prefix. */ | |
162 | while (prefix_len > 0 | |
f822c95b | 163 | && IS_DIR_SEPARATOR (gdb_sysroot[prefix_len - 1])) |
f1d10cfb AS |
164 | prefix_len--; |
165 | ||
166 | /* Cat the prefixed pathname together. */ | |
167 | temp_pathname = alloca (prefix_len + strlen (in_pathname) + 1); | |
f822c95b | 168 | strncpy (temp_pathname, gdb_sysroot, prefix_len); |
f1d10cfb AS |
169 | temp_pathname[prefix_len] = '\0'; |
170 | strcat (temp_pathname, in_pathname); | |
e4f7b8c8 MS |
171 | } |
172 | ||
f1838a98 UW |
173 | /* Handle remote files. */ |
174 | if (remote_filename_p (temp_pathname)) | |
175 | { | |
572d275c UW |
176 | *fd = -1; |
177 | return xstrdup (temp_pathname); | |
f1838a98 UW |
178 | } |
179 | ||
f1d10cfb AS |
180 | /* Now see if we can open it. */ |
181 | found_file = open (temp_pathname, O_RDONLY | O_BINARY, 0); | |
182 | ||
0997b535 MS |
183 | /* We try to find the library in various ways. After each attempt |
184 | (except for the one above), either found_file >= 0 and | |
185 | temp_pathname is a malloc'd string, or found_file < 0 and | |
186 | temp_pathname does not point to storage that needs to be | |
187 | freed. */ | |
188 | ||
189 | if (found_file < 0) | |
190 | temp_pathname = NULL; | |
191 | else | |
192 | temp_pathname = xstrdup (temp_pathname); | |
193 | ||
f822c95b | 194 | /* If the search in gdb_sysroot failed, and the path name is |
ba5f0d88 OF |
195 | absolute at this point, make it relative. (openp will try and open the |
196 | file according to its absolute path otherwise, which is not what we want.) | |
197 | Affects subsequent searches for this solib. */ | |
198 | if (found_file < 0 && IS_ABSOLUTE_PATH (in_pathname)) | |
199 | { | |
200 | /* First, get rid of any drive letters etc. */ | |
201 | while (!IS_DIR_SEPARATOR (*in_pathname)) | |
202 | in_pathname++; | |
203 | ||
204 | /* Next, get rid of all leading dir separators. */ | |
205 | while (IS_DIR_SEPARATOR (*in_pathname)) | |
206 | in_pathname++; | |
207 | } | |
208 | ||
c8c18e65 | 209 | /* If not found, search the solib_search_path (if any). */ |
e4f7b8c8 | 210 | if (found_file < 0 && solib_search_path != NULL) |
014d698b | 211 | found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST, |
637d6690 | 212 | in_pathname, O_RDONLY | O_BINARY, 0, &temp_pathname); |
ba5f0d88 OF |
213 | |
214 | /* If not found, next search the solib_search_path (if any) for the basename | |
215 | only (ignoring the path). This is to allow reading solibs from a path | |
216 | that differs from the opened path. */ | |
217 | if (found_file < 0 && solib_search_path != NULL) | |
014d698b | 218 | found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST, |
637d6690 | 219 | lbasename (in_pathname), O_RDONLY | O_BINARY, 0, |
ba5f0d88 | 220 | &temp_pathname); |
e4f7b8c8 | 221 | |
2610b0bf | 222 | /* If not found, try to use target supplied solib search method */ |
66aba65d | 223 | if (found_file < 0 && ops->find_and_open_solib) |
637d6690 | 224 | found_file = ops->find_and_open_solib (in_pathname, O_RDONLY | O_BINARY, |
66aba65d | 225 | &temp_pathname); |
2610b0bf | 226 | |
e4f7b8c8 | 227 | /* If not found, next search the inferior's $PATH environment variable. */ |
f822c95b | 228 | if (found_file < 0 && gdb_sysroot_is_empty) |
e4f7b8c8 | 229 | found_file = openp (get_in_environ (inferior_environ, "PATH"), |
637d6690 | 230 | OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY, 0, |
014d698b | 231 | &temp_pathname); |
e4f7b8c8 MS |
232 | |
233 | /* If not found, next search the inferior's $LD_LIBRARY_PATH | |
234 | environment variable. */ | |
f822c95b | 235 | if (found_file < 0 && gdb_sysroot_is_empty) |
e4f7b8c8 | 236 | found_file = openp (get_in_environ (inferior_environ, "LD_LIBRARY_PATH"), |
637d6690 | 237 | OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY, 0, |
014d698b | 238 | &temp_pathname); |
e4f7b8c8 | 239 | |
572d275c UW |
240 | *fd = found_file; |
241 | return temp_pathname; | |
242 | } | |
243 | ||
244 | /* Open and return a BFD for the shared library PATHNAME. If FD is not -1, | |
245 | it is used as file handle to open the file. Throws an error if the file | |
246 | could not be opened. Handles both local and remote file access. | |
247 | ||
248 | PATHNAME must be malloc'ed by the caller. If successful, the new BFD's | |
249 | name will point to it. If unsuccessful, PATHNAME will be freed and the | |
250 | FD will be closed (unless FD was -1). */ | |
251 | ||
252 | bfd * | |
253 | solib_bfd_fopen (char *pathname, int fd) | |
254 | { | |
255 | bfd *abfd; | |
256 | ||
257 | if (remote_filename_p (pathname)) | |
258 | { | |
259 | gdb_assert (fd == -1); | |
260 | abfd = remote_bfd_open (pathname, gnutarget); | |
261 | } | |
262 | else | |
263 | { | |
264 | abfd = bfd_fopen (pathname, gnutarget, FOPEN_RB, fd); | |
265 | ||
266 | if (abfd) | |
267 | bfd_set_cacheable (abfd, 1); | |
268 | else if (fd != -1) | |
269 | close (fd); | |
270 | } | |
f1838a98 | 271 | |
f1838a98 UW |
272 | if (!abfd) |
273 | { | |
572d275c | 274 | make_cleanup (xfree, pathname); |
f1838a98 | 275 | error (_("Could not open `%s' as an executable file: %s"), |
572d275c | 276 | pathname, bfd_errmsg (bfd_get_error ())); |
f1838a98 UW |
277 | } |
278 | ||
572d275c UW |
279 | return abfd; |
280 | } | |
281 | ||
282 | /* Find shared library PATHNAME and open a BFD for it. */ | |
283 | ||
284 | bfd * | |
285 | solib_bfd_open (char *pathname) | |
286 | { | |
287 | struct target_so_ops *ops = solib_ops (target_gdbarch); | |
288 | char *found_pathname; | |
289 | int found_file; | |
290 | bfd *abfd; | |
291 | ||
292 | /* Use target-specific override if present. */ | |
293 | if (ops->bfd_open) | |
294 | return ops->bfd_open (pathname); | |
295 | ||
296 | /* Search for shared library file. */ | |
297 | found_pathname = solib_find (pathname, &found_file); | |
298 | if (found_pathname == NULL) | |
299 | perror_with_name (pathname); | |
300 | ||
301 | /* Open bfd for shared library. */ | |
302 | abfd = solib_bfd_fopen (found_pathname, found_file); | |
303 | ||
304 | /* Check bfd format. */ | |
f1838a98 | 305 | if (!bfd_check_format (abfd, bfd_object)) |
0997b535 | 306 | { |
f1838a98 | 307 | bfd_close (abfd); |
572d275c | 308 | make_cleanup (xfree, found_pathname); |
f1838a98 | 309 | error (_("`%s': not in executable format: %s"), |
572d275c | 310 | found_pathname, bfd_errmsg (bfd_get_error ())); |
0997b535 | 311 | } |
f1838a98 | 312 | |
f1838a98 | 313 | return abfd; |
e4f7b8c8 MS |
314 | } |
315 | ||
316 | ||
c906108c SS |
317 | /* |
318 | ||
c5aa993b | 319 | LOCAL FUNCTION |
c906108c | 320 | |
c5aa993b | 321 | solib_map_sections -- open bfd and build sections for shared lib |
c906108c | 322 | |
c5aa993b | 323 | SYNOPSIS |
c906108c | 324 | |
c5aa993b | 325 | static int solib_map_sections (struct so_list *so) |
c906108c | 326 | |
c5aa993b | 327 | DESCRIPTION |
c906108c | 328 | |
c5aa993b JM |
329 | Given a pointer to one of the shared objects in our list |
330 | of mapped objects, use the recorded name to open a bfd | |
331 | descriptor for the object, build a section table, and then | |
332 | relocate all the section addresses by the base address at | |
333 | which the shared object was mapped. | |
c906108c | 334 | |
c5aa993b | 335 | FIXMES |
c906108c | 336 | |
c5aa993b JM |
337 | In most (all?) cases the shared object file name recorded in the |
338 | dynamic linkage tables will be a fully qualified pathname. For | |
339 | cases where it isn't, do we really mimic the systems search | |
340 | mechanism correctly in the below code (particularly the tilde | |
341 | expansion stuff?). | |
c906108c SS |
342 | */ |
343 | ||
344 | static int | |
4efb68b1 | 345 | solib_map_sections (void *arg) |
c906108c SS |
346 | { |
347 | struct so_list *so = (struct so_list *) arg; /* catch_errors bogon */ | |
348 | char *filename; | |
c906108c SS |
349 | struct section_table *p; |
350 | struct cleanup *old_chain; | |
351 | bfd *abfd; | |
c5aa993b JM |
352 | |
353 | filename = tilde_expand (so->so_name); | |
b8c9b27d | 354 | old_chain = make_cleanup (xfree, filename); |
f1838a98 UW |
355 | abfd = solib_bfd_open (filename); |
356 | do_cleanups (old_chain); | |
e4f7b8c8 | 357 | |
13437d4b KB |
358 | /* Leave bfd open, core_xfer_memory and "info files" need it. */ |
359 | so->abfd = abfd; | |
23e04971 | 360 | |
e4f7b8c8 MS |
361 | /* copy full path name into so_name, so that later symbol_file_add |
362 | can find it */ | |
f1838a98 UW |
363 | if (strlen (bfd_get_filename (abfd)) >= SO_NAME_MAX_PATH_SIZE) |
364 | error (_("Shared library file name is too long.")); | |
365 | strcpy (so->so_name, bfd_get_filename (abfd)); | |
23e04971 | 366 | |
13437d4b | 367 | if (build_section_table (abfd, &so->sections, &so->sections_end)) |
23e04971 | 368 | { |
8a3fe4f8 | 369 | error (_("Can't find the file sections in `%s': %s"), |
13437d4b | 370 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
23e04971 | 371 | } |
104c1213 | 372 | |
13437d4b | 373 | for (p = so->sections; p < so->sections_end; p++) |
104c1213 | 374 | { |
1cf3db46 | 375 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 376 | |
13437d4b KB |
377 | /* Relocate the section binding addresses as recorded in the shared |
378 | object's file by the base address to which the object was actually | |
379 | mapped. */ | |
66aba65d | 380 | ops->relocate_section_addresses (so, p); |
cfa9d6d9 DJ |
381 | |
382 | /* If the target didn't provide information about the address | |
383 | range of the shared object, assume we want the location of | |
384 | the .text section. */ | |
385 | if (so->addr_low == 0 && so->addr_high == 0 | |
386 | && strcmp (p->the_bfd_section->name, ".text") == 0) | |
13437d4b | 387 | { |
cfa9d6d9 DJ |
388 | so->addr_low = p->addr; |
389 | so->addr_high = p->endaddr; | |
13437d4b | 390 | } |
104c1213 JM |
391 | } |
392 | ||
13437d4b | 393 | return (1); |
104c1213 | 394 | } |
c906108c | 395 | |
07cd4b97 | 396 | /* LOCAL FUNCTION |
c906108c | 397 | |
07cd4b97 | 398 | free_so --- free a `struct so_list' object |
c906108c | 399 | |
c5aa993b | 400 | SYNOPSIS |
c906108c | 401 | |
07cd4b97 | 402 | void free_so (struct so_list *so) |
c906108c | 403 | |
c5aa993b | 404 | DESCRIPTION |
c906108c | 405 | |
07cd4b97 JB |
406 | Free the storage associated with the `struct so_list' object SO. |
407 | If we have opened a BFD for SO, close it. | |
c906108c | 408 | |
07cd4b97 JB |
409 | The caller is responsible for removing SO from whatever list it is |
410 | a member of. If we have placed SO's sections in some target's | |
411 | section table, the caller is responsible for removing them. | |
c906108c | 412 | |
07cd4b97 JB |
413 | This function doesn't mess with objfiles at all. If there is an |
414 | objfile associated with SO that needs to be removed, the caller is | |
415 | responsible for taking care of that. */ | |
416 | ||
13437d4b | 417 | void |
07cd4b97 | 418 | free_so (struct so_list *so) |
c906108c | 419 | { |
1cf3db46 | 420 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
07cd4b97 | 421 | char *bfd_filename = 0; |
c5aa993b | 422 | |
07cd4b97 | 423 | if (so->sections) |
b8c9b27d | 424 | xfree (so->sections); |
07cd4b97 JB |
425 | |
426 | if (so->abfd) | |
c906108c | 427 | { |
07cd4b97 JB |
428 | bfd_filename = bfd_get_filename (so->abfd); |
429 | if (! bfd_close (so->abfd)) | |
8a3fe4f8 | 430 | warning (_("cannot close \"%s\": %s"), |
07cd4b97 | 431 | bfd_filename, bfd_errmsg (bfd_get_error ())); |
c906108c | 432 | } |
07cd4b97 JB |
433 | |
434 | if (bfd_filename) | |
b8c9b27d | 435 | xfree (bfd_filename); |
07cd4b97 | 436 | |
66aba65d | 437 | ops->free_so (so); |
07cd4b97 | 438 | |
b8c9b27d | 439 | xfree (so); |
c906108c SS |
440 | } |
441 | ||
07cd4b97 | 442 | |
f8766ec1 KB |
443 | /* Return address of first so_list entry in master shared object list. */ |
444 | struct so_list * | |
445 | master_so_list (void) | |
446 | { | |
447 | return so_list_head; | |
448 | } | |
449 | ||
450 | ||
c906108c SS |
451 | /* A small stub to get us past the arg-passing pinhole of catch_errors. */ |
452 | ||
453 | static int | |
4efb68b1 | 454 | symbol_add_stub (void *arg) |
c906108c | 455 | { |
52f0bd74 | 456 | struct so_list *so = (struct so_list *) arg; /* catch_errs bogon */ |
62557bbc | 457 | struct section_addr_info *sap; |
c906108c | 458 | |
07cd4b97 JB |
459 | /* Have we already loaded this shared object? */ |
460 | ALL_OBJFILES (so->objfile) | |
461 | { | |
462 | if (strcmp (so->objfile->name, so->so_name) == 0) | |
463 | return 1; | |
464 | } | |
465 | ||
62557bbc KB |
466 | sap = build_section_addr_info_from_section_table (so->sections, |
467 | so->sections_end); | |
e7cf9df1 | 468 | |
572d275c UW |
469 | so->objfile = symbol_file_add_from_bfd (so->abfd, so->from_tty, |
470 | sap, 0, OBJF_SHARED | OBJF_KEEPBFD); | |
62557bbc | 471 | free_section_addr_info (sap); |
c906108c | 472 | |
07cd4b97 | 473 | return (1); |
c906108c SS |
474 | } |
475 | ||
42a6e6a0 MK |
476 | /* Read in symbols for shared object SO. If FROM_TTY is non-zero, be |
477 | chatty about it. Return non-zero if any symbols were actually | |
478 | loaded. */ | |
479 | ||
480 | int | |
481 | solib_read_symbols (struct so_list *so, int from_tty) | |
482 | { | |
483 | if (so->symbols_loaded) | |
484 | { | |
485 | if (from_tty) | |
a3f17187 | 486 | printf_unfiltered (_("Symbols already loaded for %s\n"), so->so_name); |
42a6e6a0 | 487 | } |
8bb75286 DJ |
488 | else if (so->abfd == NULL) |
489 | { | |
490 | if (from_tty) | |
491 | printf_unfiltered (_("Symbol file not found for %s\n"), so->so_name); | |
492 | } | |
42a6e6a0 MK |
493 | else |
494 | { | |
495 | if (catch_errors (symbol_add_stub, so, | |
496 | "Error while reading shared library symbols:\n", | |
497 | RETURN_MASK_ALL)) | |
498 | { | |
bf250677 | 499 | if (from_tty && print_symbol_loading) |
a3f17187 | 500 | printf_unfiltered (_("Loaded symbols for %s\n"), so->so_name); |
42a6e6a0 MK |
501 | so->symbols_loaded = 1; |
502 | return 1; | |
503 | } | |
504 | } | |
505 | ||
506 | return 0; | |
507 | } | |
c906108c | 508 | |
07cd4b97 | 509 | /* LOCAL FUNCTION |
c906108c | 510 | |
105b175f | 511 | update_solib_list --- synchronize GDB's shared object list with inferior's |
c906108c | 512 | |
c5aa993b | 513 | SYNOPSIS |
c906108c | 514 | |
105b175f | 515 | void update_solib_list (int from_tty, struct target_ops *TARGET) |
c906108c | 516 | |
07cd4b97 | 517 | Extract the list of currently loaded shared objects from the |
105b175f JB |
518 | inferior, and compare it with the list of shared objects currently |
519 | in GDB's so_list_head list. Edit so_list_head to bring it in sync | |
520 | with the inferior's new list. | |
c906108c | 521 | |
105b175f JB |
522 | If we notice that the inferior has unloaded some shared objects, |
523 | free any symbolic info GDB had read about those shared objects. | |
524 | ||
525 | Don't load symbolic info for any new shared objects; just add them | |
526 | to the list, and leave their symbols_loaded flag clear. | |
07cd4b97 JB |
527 | |
528 | If FROM_TTY is non-null, feel free to print messages about what | |
529 | we're doing. | |
c906108c | 530 | |
07cd4b97 JB |
531 | If TARGET is non-null, add the sections of all new shared objects |
532 | to TARGET's section table. Note that this doesn't remove any | |
533 | sections for shared objects that have been unloaded, and it | |
534 | doesn't check to see if the new shared objects are already present in | |
535 | the section table. But we only use this for core files and | |
536 | processes we've just attached to, so that's okay. */ | |
c906108c | 537 | |
a78f21af | 538 | static void |
105b175f | 539 | update_solib_list (int from_tty, struct target_ops *target) |
07cd4b97 | 540 | { |
1cf3db46 | 541 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 542 | struct so_list *inferior = ops->current_sos(); |
07cd4b97 JB |
543 | struct so_list *gdb, **gdb_link; |
544 | ||
181e7f93 PA |
545 | /* We can reach here due to changing solib-search-path or the |
546 | sysroot, before having any inferior. */ | |
50c71eaf | 547 | if (target_has_execution && !ptid_equal (inferior_ptid, null_ptid)) |
181e7f93 PA |
548 | { |
549 | struct inferior *inf = current_inferior (); | |
550 | ||
551 | /* If we are attaching to a running process for which we | |
552 | have not opened a symbol file, we may be able to get its | |
553 | symbols now! */ | |
554 | if (inf->attach_flag && symfile_objfile == NULL) | |
555 | catch_errors (ops->open_symbol_file_object, &from_tty, | |
556 | "Error reading attached process's symbol file.\n", | |
557 | RETURN_MASK_ALL); | |
558 | } | |
104c1213 | 559 | |
07cd4b97 JB |
560 | /* GDB and the inferior's dynamic linker each maintain their own |
561 | list of currently loaded shared objects; we want to bring the | |
562 | former in sync with the latter. Scan both lists, seeing which | |
563 | shared objects appear where. There are three cases: | |
564 | ||
565 | - A shared object appears on both lists. This means that GDB | |
105b175f JB |
566 | knows about it already, and it's still loaded in the inferior. |
567 | Nothing needs to happen. | |
07cd4b97 JB |
568 | |
569 | - A shared object appears only on GDB's list. This means that | |
105b175f JB |
570 | the inferior has unloaded it. We should remove the shared |
571 | object from GDB's tables. | |
07cd4b97 JB |
572 | |
573 | - A shared object appears only on the inferior's list. This | |
105b175f JB |
574 | means that it's just been loaded. We should add it to GDB's |
575 | tables. | |
07cd4b97 JB |
576 | |
577 | So we walk GDB's list, checking each entry to see if it appears | |
578 | in the inferior's list too. If it does, no action is needed, and | |
579 | we remove it from the inferior's list. If it doesn't, the | |
580 | inferior has unloaded it, and we remove it from GDB's list. By | |
581 | the time we're done walking GDB's list, the inferior's list | |
582 | contains only the new shared objects, which we then add. */ | |
583 | ||
584 | gdb = so_list_head; | |
585 | gdb_link = &so_list_head; | |
586 | while (gdb) | |
c906108c | 587 | { |
07cd4b97 JB |
588 | struct so_list *i = inferior; |
589 | struct so_list **i_link = &inferior; | |
590 | ||
591 | /* Check to see whether the shared object *gdb also appears in | |
592 | the inferior's current list. */ | |
593 | while (i) | |
c906108c | 594 | { |
a7c02bc8 VP |
595 | if (ops->same) |
596 | { | |
597 | if (ops->same (gdb, i)) | |
598 | break; | |
599 | } | |
600 | else | |
601 | { | |
602 | if (! strcmp (gdb->so_original_name, i->so_original_name)) | |
603 | break; | |
604 | } | |
07cd4b97 JB |
605 | |
606 | i_link = &i->next; | |
607 | i = *i_link; | |
c906108c | 608 | } |
c5aa993b | 609 | |
07cd4b97 JB |
610 | /* If the shared object appears on the inferior's list too, then |
611 | it's still loaded, so we don't need to do anything. Delete | |
612 | it from the inferior's list, and leave it on GDB's list. */ | |
613 | if (i) | |
c906108c | 614 | { |
07cd4b97 | 615 | *i_link = i->next; |
07cd4b97 JB |
616 | free_so (i); |
617 | gdb_link = &gdb->next; | |
618 | gdb = *gdb_link; | |
619 | } | |
620 | ||
621 | /* If it's not on the inferior's list, remove it from GDB's tables. */ | |
622 | else | |
623 | { | |
42a6e6a0 MK |
624 | /* Notify any observer that the shared object has been |
625 | unloaded before we remove it from GDB's tables. */ | |
84acb35a JJ |
626 | observer_notify_solib_unloaded (gdb); |
627 | ||
07cd4b97 | 628 | *gdb_link = gdb->next; |
07cd4b97 JB |
629 | |
630 | /* Unless the user loaded it explicitly, free SO's objfile. */ | |
e8930304 | 631 | if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED)) |
07cd4b97 JB |
632 | free_objfile (gdb->objfile); |
633 | ||
634 | /* Some targets' section tables might be referring to | |
635 | sections from so->abfd; remove them. */ | |
636 | remove_target_sections (gdb->abfd); | |
637 | ||
638 | free_so (gdb); | |
639 | gdb = *gdb_link; | |
c906108c SS |
640 | } |
641 | } | |
c5aa993b | 642 | |
07cd4b97 JB |
643 | /* Now the inferior's list contains only shared objects that don't |
644 | appear in GDB's list --- those that are newly loaded. Add them | |
e8930304 | 645 | to GDB's shared object list. */ |
07cd4b97 | 646 | if (inferior) |
c906108c | 647 | { |
07cd4b97 JB |
648 | struct so_list *i; |
649 | ||
650 | /* Add the new shared objects to GDB's list. */ | |
651 | *gdb_link = inferior; | |
652 | ||
e8930304 | 653 | /* Fill in the rest of each of the `struct so_list' nodes. */ |
07cd4b97 | 654 | for (i = inferior; i; i = i->next) |
c906108c | 655 | { |
07cd4b97 JB |
656 | i->from_tty = from_tty; |
657 | ||
658 | /* Fill in the rest of the `struct so_list' node. */ | |
659 | catch_errors (solib_map_sections, i, | |
660 | "Error while mapping shared library sections:\n", | |
661 | RETURN_MASK_ALL); | |
07cd4b97 | 662 | |
b41be06e ND |
663 | /* If requested, add the shared object's sections to the TARGET's |
664 | section table. Do this immediately after mapping the object so | |
665 | that later nodes in the list can query this object, as is needed | |
666 | in solib-osf.c. */ | |
667 | if (target) | |
c906108c | 668 | { |
b41be06e ND |
669 | int count = (i->sections_end - i->sections); |
670 | if (count > 0) | |
07cd4b97 | 671 | { |
b41be06e | 672 | int space = target_resize_to_sections (target, count); |
07cd4b97 JB |
673 | memcpy (target->to_sections + space, |
674 | i->sections, | |
675 | count * sizeof (i->sections[0])); | |
07cd4b97 | 676 | } |
c906108c | 677 | } |
42a6e6a0 MK |
678 | |
679 | /* Notify any observer that the shared object has been | |
680 | loaded now that we've added it to GDB's tables. */ | |
681 | observer_notify_solib_loaded (i); | |
c906108c | 682 | } |
e8930304 | 683 | } |
105b175f JB |
684 | } |
685 | ||
6612ad7f JB |
686 | /* Return non-zero if SO is the libpthread shared library. |
687 | ||
688 | Uses a fairly simplistic heuristic approach where we check | |
689 | the file name against "/libpthread". This can lead to false | |
690 | positives, but this should be good enough in practice. */ | |
691 | ||
692 | static int | |
693 | libpthread_solib_p (struct so_list *so) | |
694 | { | |
695 | return (strstr (so->so_name, "/libpthread") != NULL); | |
696 | } | |
105b175f JB |
697 | |
698 | /* GLOBAL FUNCTION | |
699 | ||
700 | solib_add -- read in symbol info for newly added shared libraries | |
701 | ||
702 | SYNOPSIS | |
703 | ||
990f9fe3 FF |
704 | void solib_add (char *pattern, int from_tty, struct target_ops |
705 | *TARGET, int readsyms) | |
105b175f JB |
706 | |
707 | DESCRIPTION | |
708 | ||
709 | Read in symbolic information for any shared objects whose names | |
710 | match PATTERN. (If we've already read a shared object's symbol | |
711 | info, leave it alone.) If PATTERN is zero, read them all. | |
712 | ||
990f9fe3 FF |
713 | If READSYMS is 0, defer reading symbolic information until later |
714 | but still do any needed low level processing. | |
715 | ||
105b175f JB |
716 | FROM_TTY and TARGET are as described for update_solib_list, above. */ |
717 | ||
718 | void | |
990f9fe3 | 719 | solib_add (char *pattern, int from_tty, struct target_ops *target, int readsyms) |
105b175f JB |
720 | { |
721 | struct so_list *gdb; | |
722 | ||
723 | if (pattern) | |
724 | { | |
725 | char *re_err = re_comp (pattern); | |
726 | ||
727 | if (re_err) | |
8a3fe4f8 | 728 | error (_("Invalid regexp: %s"), re_err); |
105b175f JB |
729 | } |
730 | ||
731 | update_solib_list (from_tty, target); | |
c906108c | 732 | |
105b175f JB |
733 | /* Walk the list of currently loaded shared libraries, and read |
734 | symbols for any that match the pattern --- or any whose symbols | |
735 | aren't already loaded, if no pattern was given. */ | |
e8930304 JB |
736 | { |
737 | int any_matches = 0; | |
738 | int loaded_any_symbols = 0; | |
c906108c | 739 | |
e8930304 JB |
740 | for (gdb = so_list_head; gdb; gdb = gdb->next) |
741 | if (! pattern || re_exec (gdb->so_name)) | |
742 | { | |
6612ad7f JB |
743 | /* Normally, we would read the symbols from that library |
744 | only if READSYMS is set. However, we're making a small | |
745 | exception for the pthread library, because we sometimes | |
746 | need the library symbols to be loaded in order to provide | |
747 | thread support (x86-linux for instance). */ | |
748 | const int add_this_solib = | |
749 | (readsyms || libpthread_solib_p (gdb)); | |
750 | ||
e8930304 | 751 | any_matches = 1; |
6612ad7f | 752 | if (add_this_solib && solib_read_symbols (gdb, from_tty)) |
42a6e6a0 | 753 | loaded_any_symbols = 1; |
e8930304 JB |
754 | } |
755 | ||
756 | if (from_tty && pattern && ! any_matches) | |
757 | printf_unfiltered | |
758 | ("No loaded shared libraries match the pattern `%s'.\n", pattern); | |
759 | ||
760 | if (loaded_any_symbols) | |
761 | { | |
1cf3db46 | 762 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 763 | |
e8930304 JB |
764 | /* Getting new symbols may change our opinion about what is |
765 | frameless. */ | |
766 | reinit_frame_cache (); | |
767 | ||
66aba65d | 768 | ops->special_symbol_handling (); |
e8930304 JB |
769 | } |
770 | } | |
c906108c SS |
771 | } |
772 | ||
07cd4b97 | 773 | |
c906108c SS |
774 | /* |
775 | ||
c5aa993b | 776 | LOCAL FUNCTION |
c906108c | 777 | |
c5aa993b | 778 | info_sharedlibrary_command -- code for "info sharedlibrary" |
c906108c | 779 | |
c5aa993b | 780 | SYNOPSIS |
c906108c | 781 | |
c5aa993b | 782 | static void info_sharedlibrary_command () |
c906108c | 783 | |
c5aa993b | 784 | DESCRIPTION |
c906108c | 785 | |
c5aa993b JM |
786 | Walk through the shared library list and print information |
787 | about each attached library. | |
788 | */ | |
c906108c SS |
789 | |
790 | static void | |
fba45db2 | 791 | info_sharedlibrary_command (char *ignore, int from_tty) |
c906108c | 792 | { |
52f0bd74 | 793 | struct so_list *so = NULL; /* link map state variable */ |
c906108c SS |
794 | int header_done = 0; |
795 | int addr_width; | |
c906108c | 796 | |
84eb3c4f | 797 | /* "0x", a little whitespace, and two hex digits per byte of pointers. */ |
1cf3db46 | 798 | addr_width = 4 + (gdbarch_ptr_bit (target_gdbarch) / 4); |
c906108c | 799 | |
105b175f | 800 | update_solib_list (from_tty, 0); |
07cd4b97 JB |
801 | |
802 | for (so = so_list_head; so; so = so->next) | |
c906108c | 803 | { |
c5aa993b | 804 | if (so->so_name[0]) |
c906108c SS |
805 | { |
806 | if (!header_done) | |
807 | { | |
c5aa993b JM |
808 | printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width, "From", |
809 | addr_width, "To", "Syms Read", | |
810 | "Shared Object Library"); | |
c906108c SS |
811 | header_done++; |
812 | } | |
813 | ||
814 | printf_unfiltered ("%-*s", addr_width, | |
cfa9d6d9 | 815 | so->addr_high != 0 |
bb599908 | 816 | ? hex_string_custom ( |
cfa9d6d9 | 817 | (LONGEST) so->addr_low, |
bb599908 | 818 | addr_width - 4) |
749499cb | 819 | : ""); |
c906108c | 820 | printf_unfiltered ("%-*s", addr_width, |
cfa9d6d9 | 821 | so->addr_high != 0 |
bb599908 | 822 | ? hex_string_custom ( |
cfa9d6d9 | 823 | (LONGEST) so->addr_high, |
bb599908 | 824 | addr_width - 4) |
749499cb | 825 | : ""); |
c5aa993b JM |
826 | printf_unfiltered ("%-12s", so->symbols_loaded ? "Yes" : "No"); |
827 | printf_unfiltered ("%s\n", so->so_name); | |
c906108c SS |
828 | } |
829 | } | |
830 | if (so_list_head == NULL) | |
831 | { | |
a3f17187 | 832 | printf_unfiltered (_("No shared libraries loaded at this time.\n")); |
c906108c SS |
833 | } |
834 | } | |
835 | ||
836 | /* | |
837 | ||
c5aa993b | 838 | GLOBAL FUNCTION |
c906108c | 839 | |
c5aa993b | 840 | solib_address -- check to see if an address is in a shared lib |
c906108c | 841 | |
c5aa993b | 842 | SYNOPSIS |
c906108c | 843 | |
c5aa993b | 844 | char * solib_address (CORE_ADDR address) |
c906108c | 845 | |
c5aa993b | 846 | DESCRIPTION |
c906108c | 847 | |
c5aa993b JM |
848 | Provides a hook for other gdb routines to discover whether or |
849 | not a particular address is within the mapped address space of | |
749499cb | 850 | a shared library. |
c906108c | 851 | |
c5aa993b JM |
852 | For example, this routine is called at one point to disable |
853 | breakpoints which are in shared libraries that are not currently | |
854 | mapped in. | |
c906108c SS |
855 | */ |
856 | ||
857 | char * | |
fba45db2 | 858 | solib_address (CORE_ADDR address) |
c906108c | 859 | { |
52f0bd74 | 860 | struct so_list *so = 0; /* link map state variable */ |
c5aa993b | 861 | |
07cd4b97 | 862 | for (so = so_list_head; so; so = so->next) |
c906108c | 863 | { |
749499cb KB |
864 | struct section_table *p; |
865 | ||
866 | for (p = so->sections; p < so->sections_end; p++) | |
867 | { | |
868 | if (p->addr <= address && address < p->endaddr) | |
869 | return (so->so_name); | |
870 | } | |
c906108c | 871 | } |
07cd4b97 | 872 | |
c906108c SS |
873 | return (0); |
874 | } | |
875 | ||
876 | /* Called by free_all_symtabs */ | |
877 | ||
c5aa993b | 878 | void |
fba45db2 | 879 | clear_solib (void) |
c906108c | 880 | { |
1cf3db46 | 881 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 882 | |
085dd6e6 JM |
883 | /* This function is expected to handle ELF shared libraries. It is |
884 | also used on Solaris, which can run either ELF or a.out binaries | |
885 | (for compatibility with SunOS 4), both of which can use shared | |
886 | libraries. So we don't know whether we have an ELF executable or | |
887 | an a.out executable until the user chooses an executable file. | |
888 | ||
889 | ELF shared libraries don't get mapped into the address space | |
890 | until after the program starts, so we'd better not try to insert | |
891 | breakpoints in them immediately. We have to wait until the | |
892 | dynamic linker has loaded them; we'll hit a bp_shlib_event | |
893 | breakpoint (look for calls to create_solib_event_breakpoint) when | |
894 | it's ready. | |
895 | ||
896 | SunOS shared libraries seem to be different --- they're present | |
897 | as soon as the process begins execution, so there's no need to | |
898 | put off inserting breakpoints. There's also nowhere to put a | |
899 | bp_shlib_event breakpoint, so if we put it off, we'll never get | |
900 | around to it. | |
901 | ||
902 | So: disable breakpoints only if we're using ELF shared libs. */ | |
903 | if (exec_bfd != NULL | |
904 | && bfd_get_flavour (exec_bfd) != bfd_target_aout_flavour) | |
cb851954 | 905 | disable_breakpoints_in_shlibs (); |
085dd6e6 | 906 | |
c906108c SS |
907 | while (so_list_head) |
908 | { | |
07cd4b97 JB |
909 | struct so_list *so = so_list_head; |
910 | so_list_head = so->next; | |
2069d78d KB |
911 | if (so->abfd) |
912 | remove_target_sections (so->abfd); | |
07cd4b97 | 913 | free_so (so); |
c906108c | 914 | } |
07cd4b97 | 915 | |
66aba65d | 916 | ops->clear_solib (); |
c906108c SS |
917 | } |
918 | ||
13437d4b | 919 | /* GLOBAL FUNCTION |
c5aa993b JM |
920 | |
921 | solib_create_inferior_hook -- shared library startup support | |
922 | ||
923 | SYNOPSIS | |
924 | ||
7095b863 | 925 | void solib_create_inferior_hook () |
c5aa993b JM |
926 | |
927 | DESCRIPTION | |
928 | ||
929 | When gdb starts up the inferior, it nurses it along (through the | |
930 | shell) until it is ready to execute it's first instruction. At this | |
931 | point, this function gets called via expansion of the macro | |
13437d4b | 932 | SOLIB_CREATE_INFERIOR_HOOK. */ |
c5aa993b JM |
933 | |
934 | void | |
fba45db2 | 935 | solib_create_inferior_hook (void) |
c906108c | 936 | { |
1cf3db46 | 937 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 938 | ops->solib_create_inferior_hook(); |
c906108c SS |
939 | } |
940 | ||
d7fa2ae2 KB |
941 | /* GLOBAL FUNCTION |
942 | ||
943 | in_solib_dynsym_resolve_code -- check to see if an address is in | |
944 | dynamic loader's dynamic symbol | |
945 | resolution code | |
946 | ||
947 | SYNOPSIS | |
948 | ||
949 | int in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
950 | ||
951 | DESCRIPTION | |
952 | ||
953 | Determine if PC is in the dynamic linker's symbol resolution | |
954 | code. Return 1 if so, 0 otherwise. | |
955 | */ | |
956 | ||
957 | int | |
958 | in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
959 | { | |
1cf3db46 | 960 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 961 | return ops->in_dynsym_resolve_code (pc); |
d7fa2ae2 | 962 | } |
c906108c SS |
963 | |
964 | /* | |
965 | ||
c5aa993b | 966 | LOCAL FUNCTION |
c906108c | 967 | |
c5aa993b | 968 | sharedlibrary_command -- handle command to explicitly add library |
c906108c | 969 | |
c5aa993b | 970 | SYNOPSIS |
c906108c | 971 | |
c5aa993b | 972 | static void sharedlibrary_command (char *args, int from_tty) |
c906108c | 973 | |
c5aa993b | 974 | DESCRIPTION |
c906108c | 975 | |
c5aa993b | 976 | */ |
c906108c SS |
977 | |
978 | static void | |
fba45db2 | 979 | sharedlibrary_command (char *args, int from_tty) |
c906108c SS |
980 | { |
981 | dont_repeat (); | |
990f9fe3 | 982 | solib_add (args, from_tty, (struct target_ops *) 0, 1); |
c906108c SS |
983 | } |
984 | ||
cb0ba49e MS |
985 | /* LOCAL FUNCTION |
986 | ||
987 | no_shared_libraries -- handle command to explicitly discard symbols | |
988 | from shared libraries. | |
989 | ||
990 | DESCRIPTION | |
991 | ||
992 | Implements the command "nosharedlibrary", which discards symbols | |
993 | that have been auto-loaded from shared libraries. Symbols from | |
994 | shared libraries that were added by explicit request of the user | |
995 | are not discarded. Also called from remote.c. */ | |
996 | ||
c60a7562 MS |
997 | void |
998 | no_shared_libraries (char *ignored, int from_tty) | |
999 | { | |
1000 | objfile_purge_solibs (); | |
615b9dba | 1001 | clear_solib (); |
c60a7562 | 1002 | } |
c906108c | 1003 | |
cf466558 | 1004 | static void |
f397e303 AC |
1005 | reload_shared_libraries (char *ignored, int from_tty, |
1006 | struct cmd_list_element *e) | |
cf466558 KB |
1007 | { |
1008 | no_shared_libraries (NULL, from_tty); | |
1009 | solib_add (NULL, from_tty, NULL, auto_solib_add); | |
1010 | } | |
1011 | ||
920d2a44 AC |
1012 | static void |
1013 | show_auto_solib_add (struct ui_file *file, int from_tty, | |
1014 | struct cmd_list_element *c, const char *value) | |
1015 | { | |
1016 | fprintf_filtered (file, _("Autoloading of shared library symbols is %s.\n"), | |
1017 | value); | |
1018 | } | |
1019 | ||
1020 | ||
3a40aaa0 UW |
1021 | /* Handler for library-specific lookup of global symbol NAME in OBJFILE. Call |
1022 | the library-specific handler if it is installed for the current target. */ | |
1023 | ||
1024 | struct symbol * | |
1025 | solib_global_lookup (const struct objfile *objfile, | |
1026 | const char *name, | |
1027 | const char *linkage_name, | |
21b556f4 | 1028 | const domain_enum domain) |
3a40aaa0 | 1029 | { |
1cf3db46 | 1030 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
3a40aaa0 | 1031 | |
e8a92f7b | 1032 | if (ops->lookup_lib_global_symbol != NULL) |
21b556f4 | 1033 | return ops->lookup_lib_global_symbol (objfile, name, linkage_name, domain); |
3a40aaa0 UW |
1034 | return NULL; |
1035 | } | |
1036 | ||
1037 | ||
a78f21af AC |
1038 | extern initialize_file_ftype _initialize_solib; /* -Wmissing-prototypes */ |
1039 | ||
c906108c | 1040 | void |
fba45db2 | 1041 | _initialize_solib (void) |
c906108c | 1042 | { |
fa58ee11 EZ |
1043 | struct cmd_list_element *c; |
1044 | ||
66aba65d MK |
1045 | solib_data = gdbarch_data_register_pre_init (solib_init); |
1046 | ||
c906108c | 1047 | add_com ("sharedlibrary", class_files, sharedlibrary_command, |
1bedd215 | 1048 | _("Load shared object library symbols for files matching REGEXP.")); |
c5aa993b | 1049 | add_info ("sharedlibrary", info_sharedlibrary_command, |
1bedd215 | 1050 | _("Status of loaded shared object libraries.")); |
c60a7562 | 1051 | add_com ("nosharedlibrary", class_files, no_shared_libraries, |
1bedd215 | 1052 | _("Unload all shared object library symbols.")); |
c906108c | 1053 | |
5bf193a2 AC |
1054 | add_setshow_boolean_cmd ("auto-solib-add", class_support, |
1055 | &auto_solib_add, _("\ | |
1056 | Set autoloading of shared library symbols."), _("\ | |
1057 | Show autoloading of shared library symbols."), _("\ | |
b7209cb4 FF |
1058 | If \"on\", symbols from all shared object libraries will be loaded\n\ |
1059 | automatically when the inferior begins execution, when the dynamic linker\n\ | |
1060 | informs gdb that a new library has been loaded, or when attaching to the\n\ | |
5bf193a2 AC |
1061 | inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'."), |
1062 | NULL, | |
920d2a44 | 1063 | show_auto_solib_add, |
5bf193a2 | 1064 | &setlist, &showlist); |
c906108c | 1065 | |
f822c95b DJ |
1066 | add_setshow_filename_cmd ("sysroot", class_support, |
1067 | &gdb_sysroot, _("\ | |
1068 | Set an alternate system root."), _("\ | |
1069 | Show the current system root."), _("\ | |
1070 | The system root is used to load absolute shared library symbol files.\n\ | |
1071 | For other (relative) files, you can add directories using\n\ | |
1072 | `set solib-search-path'."), | |
f397e303 AC |
1073 | reload_shared_libraries, |
1074 | NULL, | |
1075 | &setlist, &showlist); | |
c906108c | 1076 | |
f822c95b DJ |
1077 | add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0, |
1078 | &setlist); | |
1079 | add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0, | |
1080 | &showlist); | |
030292b7 | 1081 | |
525226b5 AC |
1082 | add_setshow_optional_filename_cmd ("solib-search-path", class_support, |
1083 | &solib_search_path, _("\ | |
1084 | Set the search path for loading non-absolute shared library symbol files."), _("\ | |
1085 | Show the search path for loading non-absolute shared library symbol files."), _("\ | |
1086 | This takes precedence over the environment variables PATH and LD_LIBRARY_PATH."), | |
1087 | reload_shared_libraries, | |
920d2a44 | 1088 | show_solib_search_path, |
525226b5 | 1089 | &setlist, &showlist); |
c906108c | 1090 | } |