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, |
9b254dd1 DJ |
4 | 2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008 |
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 | ||
f1838a98 | 110 | solib_bfd_open -- Find a shared library file and open BFD for it. |
e4f7b8c8 MS |
111 | |
112 | SYNOPSIS | |
113 | ||
f1838a98 | 114 | struct bfd *solib_open (char *in_pathname); |
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 | |
f1838a98 | 141 | BFD file handle for opened solib; throws error on failure. */ |
e4f7b8c8 | 142 | |
f1838a98 UW |
143 | bfd * |
144 | solib_bfd_open (char *in_pathname) | |
e4f7b8c8 | 145 | { |
1cf3db46 | 146 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
e4f7b8c8 MS |
147 | int found_file = -1; |
148 | char *temp_pathname = NULL; | |
fe4e3eb8 | 149 | char *p = in_pathname; |
f822c95b | 150 | int gdb_sysroot_is_empty; |
f1838a98 | 151 | bfd *abfd; |
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 | { | |
176 | temp_pathname = xstrdup (temp_pathname); | |
177 | abfd = remote_bfd_open (temp_pathname, gnutarget); | |
178 | if (!abfd) | |
179 | { | |
180 | make_cleanup (xfree, temp_pathname); | |
181 | error (_("Could not open `%s' as an executable file: %s"), | |
182 | temp_pathname, bfd_errmsg (bfd_get_error ())); | |
183 | } | |
184 | ||
185 | if (!bfd_check_format (abfd, bfd_object)) | |
186 | { | |
187 | bfd_close (abfd); | |
188 | make_cleanup (xfree, temp_pathname); | |
189 | error (_("`%s': not in executable format: %s"), | |
190 | temp_pathname, bfd_errmsg (bfd_get_error ())); | |
191 | } | |
192 | ||
193 | return abfd; | |
194 | } | |
195 | ||
f1d10cfb AS |
196 | /* Now see if we can open it. */ |
197 | found_file = open (temp_pathname, O_RDONLY | O_BINARY, 0); | |
198 | ||
0997b535 MS |
199 | /* We try to find the library in various ways. After each attempt |
200 | (except for the one above), either found_file >= 0 and | |
201 | temp_pathname is a malloc'd string, or found_file < 0 and | |
202 | temp_pathname does not point to storage that needs to be | |
203 | freed. */ | |
204 | ||
205 | if (found_file < 0) | |
206 | temp_pathname = NULL; | |
207 | else | |
208 | temp_pathname = xstrdup (temp_pathname); | |
209 | ||
f822c95b | 210 | /* If the search in gdb_sysroot failed, and the path name is |
ba5f0d88 OF |
211 | absolute at this point, make it relative. (openp will try and open the |
212 | file according to its absolute path otherwise, which is not what we want.) | |
213 | Affects subsequent searches for this solib. */ | |
214 | if (found_file < 0 && IS_ABSOLUTE_PATH (in_pathname)) | |
215 | { | |
216 | /* First, get rid of any drive letters etc. */ | |
217 | while (!IS_DIR_SEPARATOR (*in_pathname)) | |
218 | in_pathname++; | |
219 | ||
220 | /* Next, get rid of all leading dir separators. */ | |
221 | while (IS_DIR_SEPARATOR (*in_pathname)) | |
222 | in_pathname++; | |
223 | } | |
224 | ||
c8c18e65 | 225 | /* If not found, search the solib_search_path (if any). */ |
e4f7b8c8 | 226 | if (found_file < 0 && solib_search_path != NULL) |
014d698b | 227 | found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST, |
637d6690 | 228 | in_pathname, O_RDONLY | O_BINARY, 0, &temp_pathname); |
ba5f0d88 OF |
229 | |
230 | /* If not found, next search the solib_search_path (if any) for the basename | |
231 | only (ignoring the path). This is to allow reading solibs from a path | |
232 | that differs from the opened path. */ | |
233 | if (found_file < 0 && solib_search_path != NULL) | |
014d698b | 234 | found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST, |
637d6690 | 235 | lbasename (in_pathname), O_RDONLY | O_BINARY, 0, |
ba5f0d88 | 236 | &temp_pathname); |
e4f7b8c8 | 237 | |
2610b0bf | 238 | /* If not found, try to use target supplied solib search method */ |
66aba65d | 239 | if (found_file < 0 && ops->find_and_open_solib) |
637d6690 | 240 | found_file = ops->find_and_open_solib (in_pathname, O_RDONLY | O_BINARY, |
66aba65d | 241 | &temp_pathname); |
2610b0bf | 242 | |
e4f7b8c8 | 243 | /* If not found, next search the inferior's $PATH environment variable. */ |
f822c95b | 244 | if (found_file < 0 && gdb_sysroot_is_empty) |
e4f7b8c8 | 245 | found_file = openp (get_in_environ (inferior_environ, "PATH"), |
637d6690 | 246 | OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY, 0, |
014d698b | 247 | &temp_pathname); |
e4f7b8c8 MS |
248 | |
249 | /* If not found, next search the inferior's $LD_LIBRARY_PATH | |
250 | environment variable. */ | |
f822c95b | 251 | if (found_file < 0 && gdb_sysroot_is_empty) |
e4f7b8c8 | 252 | found_file = openp (get_in_environ (inferior_environ, "LD_LIBRARY_PATH"), |
637d6690 | 253 | OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY, 0, |
014d698b | 254 | &temp_pathname); |
e4f7b8c8 | 255 | |
f1838a98 UW |
256 | /* Done. If still not found, error. */ |
257 | if (found_file < 0) | |
258 | perror_with_name (in_pathname); | |
259 | ||
260 | /* Leave temp_pathname allocated. abfd->name will point to it. */ | |
261 | abfd = bfd_fopen (temp_pathname, gnutarget, FOPEN_RB, found_file); | |
262 | if (!abfd) | |
263 | { | |
264 | close (found_file); | |
265 | make_cleanup (xfree, temp_pathname); | |
266 | error (_("Could not open `%s' as an executable file: %s"), | |
267 | temp_pathname, bfd_errmsg (bfd_get_error ())); | |
268 | } | |
269 | ||
270 | if (!bfd_check_format (abfd, bfd_object)) | |
0997b535 | 271 | { |
f1838a98 UW |
272 | bfd_close (abfd); |
273 | make_cleanup (xfree, temp_pathname); | |
274 | error (_("`%s': not in executable format: %s"), | |
275 | temp_pathname, bfd_errmsg (bfd_get_error ())); | |
0997b535 | 276 | } |
f1838a98 UW |
277 | |
278 | bfd_set_cacheable (abfd, 1); | |
279 | return abfd; | |
e4f7b8c8 MS |
280 | } |
281 | ||
282 | ||
c906108c SS |
283 | /* |
284 | ||
c5aa993b | 285 | LOCAL FUNCTION |
c906108c | 286 | |
c5aa993b | 287 | solib_map_sections -- open bfd and build sections for shared lib |
c906108c | 288 | |
c5aa993b | 289 | SYNOPSIS |
c906108c | 290 | |
c5aa993b | 291 | static int solib_map_sections (struct so_list *so) |
c906108c | 292 | |
c5aa993b | 293 | DESCRIPTION |
c906108c | 294 | |
c5aa993b JM |
295 | Given a pointer to one of the shared objects in our list |
296 | of mapped objects, use the recorded name to open a bfd | |
297 | descriptor for the object, build a section table, and then | |
298 | relocate all the section addresses by the base address at | |
299 | which the shared object was mapped. | |
c906108c | 300 | |
c5aa993b | 301 | FIXMES |
c906108c | 302 | |
c5aa993b JM |
303 | In most (all?) cases the shared object file name recorded in the |
304 | dynamic linkage tables will be a fully qualified pathname. For | |
305 | cases where it isn't, do we really mimic the systems search | |
306 | mechanism correctly in the below code (particularly the tilde | |
307 | expansion stuff?). | |
c906108c SS |
308 | */ |
309 | ||
310 | static int | |
4efb68b1 | 311 | solib_map_sections (void *arg) |
c906108c SS |
312 | { |
313 | struct so_list *so = (struct so_list *) arg; /* catch_errors bogon */ | |
314 | char *filename; | |
c906108c SS |
315 | struct section_table *p; |
316 | struct cleanup *old_chain; | |
317 | bfd *abfd; | |
c5aa993b JM |
318 | |
319 | filename = tilde_expand (so->so_name); | |
b8c9b27d | 320 | old_chain = make_cleanup (xfree, filename); |
f1838a98 UW |
321 | abfd = solib_bfd_open (filename); |
322 | do_cleanups (old_chain); | |
e4f7b8c8 | 323 | |
13437d4b KB |
324 | /* Leave bfd open, core_xfer_memory and "info files" need it. */ |
325 | so->abfd = abfd; | |
23e04971 | 326 | |
e4f7b8c8 MS |
327 | /* copy full path name into so_name, so that later symbol_file_add |
328 | can find it */ | |
f1838a98 UW |
329 | if (strlen (bfd_get_filename (abfd)) >= SO_NAME_MAX_PATH_SIZE) |
330 | error (_("Shared library file name is too long.")); | |
331 | strcpy (so->so_name, bfd_get_filename (abfd)); | |
23e04971 | 332 | |
13437d4b | 333 | if (build_section_table (abfd, &so->sections, &so->sections_end)) |
23e04971 | 334 | { |
8a3fe4f8 | 335 | error (_("Can't find the file sections in `%s': %s"), |
13437d4b | 336 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
23e04971 | 337 | } |
104c1213 | 338 | |
13437d4b | 339 | for (p = so->sections; p < so->sections_end; p++) |
104c1213 | 340 | { |
1cf3db46 | 341 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 342 | |
13437d4b KB |
343 | /* Relocate the section binding addresses as recorded in the shared |
344 | object's file by the base address to which the object was actually | |
345 | mapped. */ | |
66aba65d | 346 | ops->relocate_section_addresses (so, p); |
cfa9d6d9 DJ |
347 | |
348 | /* If the target didn't provide information about the address | |
349 | range of the shared object, assume we want the location of | |
350 | the .text section. */ | |
351 | if (so->addr_low == 0 && so->addr_high == 0 | |
352 | && strcmp (p->the_bfd_section->name, ".text") == 0) | |
13437d4b | 353 | { |
cfa9d6d9 DJ |
354 | so->addr_low = p->addr; |
355 | so->addr_high = p->endaddr; | |
13437d4b | 356 | } |
104c1213 JM |
357 | } |
358 | ||
13437d4b | 359 | return (1); |
104c1213 | 360 | } |
c906108c | 361 | |
07cd4b97 | 362 | /* LOCAL FUNCTION |
c906108c | 363 | |
07cd4b97 | 364 | free_so --- free a `struct so_list' object |
c906108c | 365 | |
c5aa993b | 366 | SYNOPSIS |
c906108c | 367 | |
07cd4b97 | 368 | void free_so (struct so_list *so) |
c906108c | 369 | |
c5aa993b | 370 | DESCRIPTION |
c906108c | 371 | |
07cd4b97 JB |
372 | Free the storage associated with the `struct so_list' object SO. |
373 | If we have opened a BFD for SO, close it. | |
c906108c | 374 | |
07cd4b97 JB |
375 | The caller is responsible for removing SO from whatever list it is |
376 | a member of. If we have placed SO's sections in some target's | |
377 | section table, the caller is responsible for removing them. | |
c906108c | 378 | |
07cd4b97 JB |
379 | This function doesn't mess with objfiles at all. If there is an |
380 | objfile associated with SO that needs to be removed, the caller is | |
381 | responsible for taking care of that. */ | |
382 | ||
13437d4b | 383 | void |
07cd4b97 | 384 | free_so (struct so_list *so) |
c906108c | 385 | { |
1cf3db46 | 386 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
07cd4b97 | 387 | char *bfd_filename = 0; |
c5aa993b | 388 | |
07cd4b97 | 389 | if (so->sections) |
b8c9b27d | 390 | xfree (so->sections); |
07cd4b97 JB |
391 | |
392 | if (so->abfd) | |
c906108c | 393 | { |
07cd4b97 JB |
394 | bfd_filename = bfd_get_filename (so->abfd); |
395 | if (! bfd_close (so->abfd)) | |
8a3fe4f8 | 396 | warning (_("cannot close \"%s\": %s"), |
07cd4b97 | 397 | bfd_filename, bfd_errmsg (bfd_get_error ())); |
c906108c | 398 | } |
07cd4b97 JB |
399 | |
400 | if (bfd_filename) | |
b8c9b27d | 401 | xfree (bfd_filename); |
07cd4b97 | 402 | |
66aba65d | 403 | ops->free_so (so); |
07cd4b97 | 404 | |
b8c9b27d | 405 | xfree (so); |
c906108c SS |
406 | } |
407 | ||
07cd4b97 | 408 | |
f8766ec1 KB |
409 | /* Return address of first so_list entry in master shared object list. */ |
410 | struct so_list * | |
411 | master_so_list (void) | |
412 | { | |
413 | return so_list_head; | |
414 | } | |
415 | ||
416 | ||
c906108c SS |
417 | /* A small stub to get us past the arg-passing pinhole of catch_errors. */ |
418 | ||
419 | static int | |
4efb68b1 | 420 | symbol_add_stub (void *arg) |
c906108c | 421 | { |
52f0bd74 | 422 | struct so_list *so = (struct so_list *) arg; /* catch_errs bogon */ |
62557bbc | 423 | struct section_addr_info *sap; |
c906108c | 424 | |
07cd4b97 JB |
425 | /* Have we already loaded this shared object? */ |
426 | ALL_OBJFILES (so->objfile) | |
427 | { | |
428 | if (strcmp (so->objfile->name, so->so_name) == 0) | |
429 | return 1; | |
430 | } | |
431 | ||
62557bbc KB |
432 | sap = build_section_addr_info_from_section_table (so->sections, |
433 | so->sections_end); | |
e7cf9df1 | 434 | |
62557bbc KB |
435 | so->objfile = symbol_file_add (so->so_name, so->from_tty, |
436 | sap, 0, OBJF_SHARED); | |
437 | free_section_addr_info (sap); | |
c906108c | 438 | |
07cd4b97 | 439 | return (1); |
c906108c SS |
440 | } |
441 | ||
42a6e6a0 MK |
442 | /* Read in symbols for shared object SO. If FROM_TTY is non-zero, be |
443 | chatty about it. Return non-zero if any symbols were actually | |
444 | loaded. */ | |
445 | ||
446 | int | |
447 | solib_read_symbols (struct so_list *so, int from_tty) | |
448 | { | |
449 | if (so->symbols_loaded) | |
450 | { | |
451 | if (from_tty) | |
a3f17187 | 452 | printf_unfiltered (_("Symbols already loaded for %s\n"), so->so_name); |
42a6e6a0 | 453 | } |
8bb75286 DJ |
454 | else if (so->abfd == NULL) |
455 | { | |
456 | if (from_tty) | |
457 | printf_unfiltered (_("Symbol file not found for %s\n"), so->so_name); | |
458 | } | |
42a6e6a0 MK |
459 | else |
460 | { | |
461 | if (catch_errors (symbol_add_stub, so, | |
462 | "Error while reading shared library symbols:\n", | |
463 | RETURN_MASK_ALL)) | |
464 | { | |
bf250677 | 465 | if (from_tty && print_symbol_loading) |
a3f17187 | 466 | printf_unfiltered (_("Loaded symbols for %s\n"), so->so_name); |
42a6e6a0 MK |
467 | so->symbols_loaded = 1; |
468 | return 1; | |
469 | } | |
470 | } | |
471 | ||
472 | return 0; | |
473 | } | |
c906108c | 474 | |
07cd4b97 | 475 | /* LOCAL FUNCTION |
c906108c | 476 | |
105b175f | 477 | update_solib_list --- synchronize GDB's shared object list with inferior's |
c906108c | 478 | |
c5aa993b | 479 | SYNOPSIS |
c906108c | 480 | |
105b175f | 481 | void update_solib_list (int from_tty, struct target_ops *TARGET) |
c906108c | 482 | |
07cd4b97 | 483 | Extract the list of currently loaded shared objects from the |
105b175f JB |
484 | inferior, and compare it with the list of shared objects currently |
485 | in GDB's so_list_head list. Edit so_list_head to bring it in sync | |
486 | with the inferior's new list. | |
c906108c | 487 | |
105b175f JB |
488 | If we notice that the inferior has unloaded some shared objects, |
489 | free any symbolic info GDB had read about those shared objects. | |
490 | ||
491 | Don't load symbolic info for any new shared objects; just add them | |
492 | to the list, and leave their symbols_loaded flag clear. | |
07cd4b97 JB |
493 | |
494 | If FROM_TTY is non-null, feel free to print messages about what | |
495 | we're doing. | |
c906108c | 496 | |
07cd4b97 JB |
497 | If TARGET is non-null, add the sections of all new shared objects |
498 | to TARGET's section table. Note that this doesn't remove any | |
499 | sections for shared objects that have been unloaded, and it | |
500 | doesn't check to see if the new shared objects are already present in | |
501 | the section table. But we only use this for core files and | |
502 | processes we've just attached to, so that's okay. */ | |
c906108c | 503 | |
a78f21af | 504 | static void |
105b175f | 505 | update_solib_list (int from_tty, struct target_ops *target) |
07cd4b97 | 506 | { |
1cf3db46 | 507 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 508 | struct so_list *inferior = ops->current_sos(); |
07cd4b97 JB |
509 | struct so_list *gdb, **gdb_link; |
510 | ||
181e7f93 PA |
511 | /* We can reach here due to changing solib-search-path or the |
512 | sysroot, before having any inferior. */ | |
50c71eaf | 513 | if (target_has_execution && !ptid_equal (inferior_ptid, null_ptid)) |
181e7f93 PA |
514 | { |
515 | struct inferior *inf = current_inferior (); | |
516 | ||
517 | /* If we are attaching to a running process for which we | |
518 | have not opened a symbol file, we may be able to get its | |
519 | symbols now! */ | |
520 | if (inf->attach_flag && symfile_objfile == NULL) | |
521 | catch_errors (ops->open_symbol_file_object, &from_tty, | |
522 | "Error reading attached process's symbol file.\n", | |
523 | RETURN_MASK_ALL); | |
524 | } | |
104c1213 | 525 | |
07cd4b97 JB |
526 | /* GDB and the inferior's dynamic linker each maintain their own |
527 | list of currently loaded shared objects; we want to bring the | |
528 | former in sync with the latter. Scan both lists, seeing which | |
529 | shared objects appear where. There are three cases: | |
530 | ||
531 | - A shared object appears on both lists. This means that GDB | |
105b175f JB |
532 | knows about it already, and it's still loaded in the inferior. |
533 | Nothing needs to happen. | |
07cd4b97 JB |
534 | |
535 | - A shared object appears only on GDB's list. This means that | |
105b175f JB |
536 | the inferior has unloaded it. We should remove the shared |
537 | object from GDB's tables. | |
07cd4b97 JB |
538 | |
539 | - A shared object appears only on the inferior's list. This | |
105b175f JB |
540 | means that it's just been loaded. We should add it to GDB's |
541 | tables. | |
07cd4b97 JB |
542 | |
543 | So we walk GDB's list, checking each entry to see if it appears | |
544 | in the inferior's list too. If it does, no action is needed, and | |
545 | we remove it from the inferior's list. If it doesn't, the | |
546 | inferior has unloaded it, and we remove it from GDB's list. By | |
547 | the time we're done walking GDB's list, the inferior's list | |
548 | contains only the new shared objects, which we then add. */ | |
549 | ||
550 | gdb = so_list_head; | |
551 | gdb_link = &so_list_head; | |
552 | while (gdb) | |
c906108c | 553 | { |
07cd4b97 JB |
554 | struct so_list *i = inferior; |
555 | struct so_list **i_link = &inferior; | |
556 | ||
557 | /* Check to see whether the shared object *gdb also appears in | |
558 | the inferior's current list. */ | |
559 | while (i) | |
c906108c | 560 | { |
a7c02bc8 VP |
561 | if (ops->same) |
562 | { | |
563 | if (ops->same (gdb, i)) | |
564 | break; | |
565 | } | |
566 | else | |
567 | { | |
568 | if (! strcmp (gdb->so_original_name, i->so_original_name)) | |
569 | break; | |
570 | } | |
07cd4b97 JB |
571 | |
572 | i_link = &i->next; | |
573 | i = *i_link; | |
c906108c | 574 | } |
c5aa993b | 575 | |
07cd4b97 JB |
576 | /* If the shared object appears on the inferior's list too, then |
577 | it's still loaded, so we don't need to do anything. Delete | |
578 | it from the inferior's list, and leave it on GDB's list. */ | |
579 | if (i) | |
c906108c | 580 | { |
07cd4b97 | 581 | *i_link = i->next; |
07cd4b97 JB |
582 | free_so (i); |
583 | gdb_link = &gdb->next; | |
584 | gdb = *gdb_link; | |
585 | } | |
586 | ||
587 | /* If it's not on the inferior's list, remove it from GDB's tables. */ | |
588 | else | |
589 | { | |
42a6e6a0 MK |
590 | /* Notify any observer that the shared object has been |
591 | unloaded before we remove it from GDB's tables. */ | |
84acb35a JJ |
592 | observer_notify_solib_unloaded (gdb); |
593 | ||
07cd4b97 | 594 | *gdb_link = gdb->next; |
07cd4b97 JB |
595 | |
596 | /* Unless the user loaded it explicitly, free SO's objfile. */ | |
e8930304 | 597 | if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED)) |
07cd4b97 JB |
598 | free_objfile (gdb->objfile); |
599 | ||
600 | /* Some targets' section tables might be referring to | |
601 | sections from so->abfd; remove them. */ | |
602 | remove_target_sections (gdb->abfd); | |
603 | ||
604 | free_so (gdb); | |
605 | gdb = *gdb_link; | |
c906108c SS |
606 | } |
607 | } | |
c5aa993b | 608 | |
07cd4b97 JB |
609 | /* Now the inferior's list contains only shared objects that don't |
610 | appear in GDB's list --- those that are newly loaded. Add them | |
e8930304 | 611 | to GDB's shared object list. */ |
07cd4b97 | 612 | if (inferior) |
c906108c | 613 | { |
07cd4b97 JB |
614 | struct so_list *i; |
615 | ||
616 | /* Add the new shared objects to GDB's list. */ | |
617 | *gdb_link = inferior; | |
618 | ||
e8930304 | 619 | /* Fill in the rest of each of the `struct so_list' nodes. */ |
07cd4b97 | 620 | for (i = inferior; i; i = i->next) |
c906108c | 621 | { |
07cd4b97 JB |
622 | i->from_tty = from_tty; |
623 | ||
624 | /* Fill in the rest of the `struct so_list' node. */ | |
625 | catch_errors (solib_map_sections, i, | |
626 | "Error while mapping shared library sections:\n", | |
627 | RETURN_MASK_ALL); | |
07cd4b97 | 628 | |
b41be06e ND |
629 | /* If requested, add the shared object's sections to the TARGET's |
630 | section table. Do this immediately after mapping the object so | |
631 | that later nodes in the list can query this object, as is needed | |
632 | in solib-osf.c. */ | |
633 | if (target) | |
c906108c | 634 | { |
b41be06e ND |
635 | int count = (i->sections_end - i->sections); |
636 | if (count > 0) | |
07cd4b97 | 637 | { |
b41be06e | 638 | int space = target_resize_to_sections (target, count); |
07cd4b97 JB |
639 | memcpy (target->to_sections + space, |
640 | i->sections, | |
641 | count * sizeof (i->sections[0])); | |
07cd4b97 | 642 | } |
c906108c | 643 | } |
42a6e6a0 MK |
644 | |
645 | /* Notify any observer that the shared object has been | |
646 | loaded now that we've added it to GDB's tables. */ | |
647 | observer_notify_solib_loaded (i); | |
c906108c | 648 | } |
e8930304 | 649 | } |
105b175f JB |
650 | } |
651 | ||
6612ad7f JB |
652 | /* Return non-zero if SO is the libpthread shared library. |
653 | ||
654 | Uses a fairly simplistic heuristic approach where we check | |
655 | the file name against "/libpthread". This can lead to false | |
656 | positives, but this should be good enough in practice. */ | |
657 | ||
658 | static int | |
659 | libpthread_solib_p (struct so_list *so) | |
660 | { | |
661 | return (strstr (so->so_name, "/libpthread") != NULL); | |
662 | } | |
105b175f JB |
663 | |
664 | /* GLOBAL FUNCTION | |
665 | ||
666 | solib_add -- read in symbol info for newly added shared libraries | |
667 | ||
668 | SYNOPSIS | |
669 | ||
990f9fe3 FF |
670 | void solib_add (char *pattern, int from_tty, struct target_ops |
671 | *TARGET, int readsyms) | |
105b175f JB |
672 | |
673 | DESCRIPTION | |
674 | ||
675 | Read in symbolic information for any shared objects whose names | |
676 | match PATTERN. (If we've already read a shared object's symbol | |
677 | info, leave it alone.) If PATTERN is zero, read them all. | |
678 | ||
990f9fe3 FF |
679 | If READSYMS is 0, defer reading symbolic information until later |
680 | but still do any needed low level processing. | |
681 | ||
105b175f JB |
682 | FROM_TTY and TARGET are as described for update_solib_list, above. */ |
683 | ||
684 | void | |
990f9fe3 | 685 | solib_add (char *pattern, int from_tty, struct target_ops *target, int readsyms) |
105b175f JB |
686 | { |
687 | struct so_list *gdb; | |
688 | ||
689 | if (pattern) | |
690 | { | |
691 | char *re_err = re_comp (pattern); | |
692 | ||
693 | if (re_err) | |
8a3fe4f8 | 694 | error (_("Invalid regexp: %s"), re_err); |
105b175f JB |
695 | } |
696 | ||
697 | update_solib_list (from_tty, target); | |
c906108c | 698 | |
105b175f JB |
699 | /* Walk the list of currently loaded shared libraries, and read |
700 | symbols for any that match the pattern --- or any whose symbols | |
701 | aren't already loaded, if no pattern was given. */ | |
e8930304 JB |
702 | { |
703 | int any_matches = 0; | |
704 | int loaded_any_symbols = 0; | |
c906108c | 705 | |
e8930304 JB |
706 | for (gdb = so_list_head; gdb; gdb = gdb->next) |
707 | if (! pattern || re_exec (gdb->so_name)) | |
708 | { | |
6612ad7f JB |
709 | /* Normally, we would read the symbols from that library |
710 | only if READSYMS is set. However, we're making a small | |
711 | exception for the pthread library, because we sometimes | |
712 | need the library symbols to be loaded in order to provide | |
713 | thread support (x86-linux for instance). */ | |
714 | const int add_this_solib = | |
715 | (readsyms || libpthread_solib_p (gdb)); | |
716 | ||
e8930304 | 717 | any_matches = 1; |
6612ad7f | 718 | if (add_this_solib && solib_read_symbols (gdb, from_tty)) |
42a6e6a0 | 719 | loaded_any_symbols = 1; |
e8930304 JB |
720 | } |
721 | ||
722 | if (from_tty && pattern && ! any_matches) | |
723 | printf_unfiltered | |
724 | ("No loaded shared libraries match the pattern `%s'.\n", pattern); | |
725 | ||
726 | if (loaded_any_symbols) | |
727 | { | |
1cf3db46 | 728 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 729 | |
e8930304 JB |
730 | /* Getting new symbols may change our opinion about what is |
731 | frameless. */ | |
732 | reinit_frame_cache (); | |
733 | ||
66aba65d | 734 | ops->special_symbol_handling (); |
e8930304 JB |
735 | } |
736 | } | |
c906108c SS |
737 | } |
738 | ||
07cd4b97 | 739 | |
c906108c SS |
740 | /* |
741 | ||
c5aa993b | 742 | LOCAL FUNCTION |
c906108c | 743 | |
c5aa993b | 744 | info_sharedlibrary_command -- code for "info sharedlibrary" |
c906108c | 745 | |
c5aa993b | 746 | SYNOPSIS |
c906108c | 747 | |
c5aa993b | 748 | static void info_sharedlibrary_command () |
c906108c | 749 | |
c5aa993b | 750 | DESCRIPTION |
c906108c | 751 | |
c5aa993b JM |
752 | Walk through the shared library list and print information |
753 | about each attached library. | |
754 | */ | |
c906108c SS |
755 | |
756 | static void | |
fba45db2 | 757 | info_sharedlibrary_command (char *ignore, int from_tty) |
c906108c | 758 | { |
52f0bd74 | 759 | struct so_list *so = NULL; /* link map state variable */ |
c906108c SS |
760 | int header_done = 0; |
761 | int addr_width; | |
c906108c | 762 | |
84eb3c4f | 763 | /* "0x", a little whitespace, and two hex digits per byte of pointers. */ |
1cf3db46 | 764 | addr_width = 4 + (gdbarch_ptr_bit (target_gdbarch) / 4); |
c906108c | 765 | |
105b175f | 766 | update_solib_list (from_tty, 0); |
07cd4b97 JB |
767 | |
768 | for (so = so_list_head; so; so = so->next) | |
c906108c | 769 | { |
c5aa993b | 770 | if (so->so_name[0]) |
c906108c SS |
771 | { |
772 | if (!header_done) | |
773 | { | |
c5aa993b JM |
774 | printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width, "From", |
775 | addr_width, "To", "Syms Read", | |
776 | "Shared Object Library"); | |
c906108c SS |
777 | header_done++; |
778 | } | |
779 | ||
780 | printf_unfiltered ("%-*s", addr_width, | |
cfa9d6d9 | 781 | so->addr_high != 0 |
bb599908 | 782 | ? hex_string_custom ( |
cfa9d6d9 | 783 | (LONGEST) so->addr_low, |
bb599908 | 784 | addr_width - 4) |
749499cb | 785 | : ""); |
c906108c | 786 | printf_unfiltered ("%-*s", addr_width, |
cfa9d6d9 | 787 | so->addr_high != 0 |
bb599908 | 788 | ? hex_string_custom ( |
cfa9d6d9 | 789 | (LONGEST) so->addr_high, |
bb599908 | 790 | addr_width - 4) |
749499cb | 791 | : ""); |
c5aa993b JM |
792 | printf_unfiltered ("%-12s", so->symbols_loaded ? "Yes" : "No"); |
793 | printf_unfiltered ("%s\n", so->so_name); | |
c906108c SS |
794 | } |
795 | } | |
796 | if (so_list_head == NULL) | |
797 | { | |
a3f17187 | 798 | printf_unfiltered (_("No shared libraries loaded at this time.\n")); |
c906108c SS |
799 | } |
800 | } | |
801 | ||
802 | /* | |
803 | ||
c5aa993b | 804 | GLOBAL FUNCTION |
c906108c | 805 | |
c5aa993b | 806 | solib_address -- check to see if an address is in a shared lib |
c906108c | 807 | |
c5aa993b | 808 | SYNOPSIS |
c906108c | 809 | |
c5aa993b | 810 | char * solib_address (CORE_ADDR address) |
c906108c | 811 | |
c5aa993b | 812 | DESCRIPTION |
c906108c | 813 | |
c5aa993b JM |
814 | Provides a hook for other gdb routines to discover whether or |
815 | not a particular address is within the mapped address space of | |
749499cb | 816 | a shared library. |
c906108c | 817 | |
c5aa993b JM |
818 | For example, this routine is called at one point to disable |
819 | breakpoints which are in shared libraries that are not currently | |
820 | mapped in. | |
c906108c SS |
821 | */ |
822 | ||
823 | char * | |
fba45db2 | 824 | solib_address (CORE_ADDR address) |
c906108c | 825 | { |
52f0bd74 | 826 | struct so_list *so = 0; /* link map state variable */ |
c5aa993b | 827 | |
07cd4b97 | 828 | for (so = so_list_head; so; so = so->next) |
c906108c | 829 | { |
749499cb KB |
830 | struct section_table *p; |
831 | ||
832 | for (p = so->sections; p < so->sections_end; p++) | |
833 | { | |
834 | if (p->addr <= address && address < p->endaddr) | |
835 | return (so->so_name); | |
836 | } | |
c906108c | 837 | } |
07cd4b97 | 838 | |
c906108c SS |
839 | return (0); |
840 | } | |
841 | ||
842 | /* Called by free_all_symtabs */ | |
843 | ||
c5aa993b | 844 | void |
fba45db2 | 845 | clear_solib (void) |
c906108c | 846 | { |
1cf3db46 | 847 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 848 | |
085dd6e6 JM |
849 | /* This function is expected to handle ELF shared libraries. It is |
850 | also used on Solaris, which can run either ELF or a.out binaries | |
851 | (for compatibility with SunOS 4), both of which can use shared | |
852 | libraries. So we don't know whether we have an ELF executable or | |
853 | an a.out executable until the user chooses an executable file. | |
854 | ||
855 | ELF shared libraries don't get mapped into the address space | |
856 | until after the program starts, so we'd better not try to insert | |
857 | breakpoints in them immediately. We have to wait until the | |
858 | dynamic linker has loaded them; we'll hit a bp_shlib_event | |
859 | breakpoint (look for calls to create_solib_event_breakpoint) when | |
860 | it's ready. | |
861 | ||
862 | SunOS shared libraries seem to be different --- they're present | |
863 | as soon as the process begins execution, so there's no need to | |
864 | put off inserting breakpoints. There's also nowhere to put a | |
865 | bp_shlib_event breakpoint, so if we put it off, we'll never get | |
866 | around to it. | |
867 | ||
868 | So: disable breakpoints only if we're using ELF shared libs. */ | |
869 | if (exec_bfd != NULL | |
870 | && bfd_get_flavour (exec_bfd) != bfd_target_aout_flavour) | |
cb851954 | 871 | disable_breakpoints_in_shlibs (); |
085dd6e6 | 872 | |
c906108c SS |
873 | while (so_list_head) |
874 | { | |
07cd4b97 JB |
875 | struct so_list *so = so_list_head; |
876 | so_list_head = so->next; | |
2069d78d KB |
877 | if (so->abfd) |
878 | remove_target_sections (so->abfd); | |
07cd4b97 | 879 | free_so (so); |
c906108c | 880 | } |
07cd4b97 | 881 | |
66aba65d | 882 | ops->clear_solib (); |
c906108c SS |
883 | } |
884 | ||
13437d4b | 885 | /* GLOBAL FUNCTION |
c5aa993b JM |
886 | |
887 | solib_create_inferior_hook -- shared library startup support | |
888 | ||
889 | SYNOPSIS | |
890 | ||
7095b863 | 891 | void solib_create_inferior_hook () |
c5aa993b JM |
892 | |
893 | DESCRIPTION | |
894 | ||
895 | When gdb starts up the inferior, it nurses it along (through the | |
896 | shell) until it is ready to execute it's first instruction. At this | |
897 | point, this function gets called via expansion of the macro | |
13437d4b | 898 | SOLIB_CREATE_INFERIOR_HOOK. */ |
c5aa993b JM |
899 | |
900 | void | |
fba45db2 | 901 | solib_create_inferior_hook (void) |
c906108c | 902 | { |
1cf3db46 | 903 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 904 | ops->solib_create_inferior_hook(); |
c906108c SS |
905 | } |
906 | ||
d7fa2ae2 KB |
907 | /* GLOBAL FUNCTION |
908 | ||
909 | in_solib_dynsym_resolve_code -- check to see if an address is in | |
910 | dynamic loader's dynamic symbol | |
911 | resolution code | |
912 | ||
913 | SYNOPSIS | |
914 | ||
915 | int in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
916 | ||
917 | DESCRIPTION | |
918 | ||
919 | Determine if PC is in the dynamic linker's symbol resolution | |
920 | code. Return 1 if so, 0 otherwise. | |
921 | */ | |
922 | ||
923 | int | |
924 | in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
925 | { | |
1cf3db46 | 926 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
66aba65d | 927 | return ops->in_dynsym_resolve_code (pc); |
d7fa2ae2 | 928 | } |
c906108c SS |
929 | |
930 | /* | |
931 | ||
c5aa993b | 932 | LOCAL FUNCTION |
c906108c | 933 | |
c5aa993b | 934 | sharedlibrary_command -- handle command to explicitly add library |
c906108c | 935 | |
c5aa993b | 936 | SYNOPSIS |
c906108c | 937 | |
c5aa993b | 938 | static void sharedlibrary_command (char *args, int from_tty) |
c906108c | 939 | |
c5aa993b | 940 | DESCRIPTION |
c906108c | 941 | |
c5aa993b | 942 | */ |
c906108c SS |
943 | |
944 | static void | |
fba45db2 | 945 | sharedlibrary_command (char *args, int from_tty) |
c906108c SS |
946 | { |
947 | dont_repeat (); | |
990f9fe3 | 948 | solib_add (args, from_tty, (struct target_ops *) 0, 1); |
c906108c SS |
949 | } |
950 | ||
cb0ba49e MS |
951 | /* LOCAL FUNCTION |
952 | ||
953 | no_shared_libraries -- handle command to explicitly discard symbols | |
954 | from shared libraries. | |
955 | ||
956 | DESCRIPTION | |
957 | ||
958 | Implements the command "nosharedlibrary", which discards symbols | |
959 | that have been auto-loaded from shared libraries. Symbols from | |
960 | shared libraries that were added by explicit request of the user | |
961 | are not discarded. Also called from remote.c. */ | |
962 | ||
c60a7562 MS |
963 | void |
964 | no_shared_libraries (char *ignored, int from_tty) | |
965 | { | |
966 | objfile_purge_solibs (); | |
615b9dba | 967 | clear_solib (); |
c60a7562 | 968 | } |
c906108c | 969 | |
cf466558 | 970 | static void |
f397e303 AC |
971 | reload_shared_libraries (char *ignored, int from_tty, |
972 | struct cmd_list_element *e) | |
cf466558 KB |
973 | { |
974 | no_shared_libraries (NULL, from_tty); | |
975 | solib_add (NULL, from_tty, NULL, auto_solib_add); | |
976 | } | |
977 | ||
920d2a44 AC |
978 | static void |
979 | show_auto_solib_add (struct ui_file *file, int from_tty, | |
980 | struct cmd_list_element *c, const char *value) | |
981 | { | |
982 | fprintf_filtered (file, _("Autoloading of shared library symbols is %s.\n"), | |
983 | value); | |
984 | } | |
985 | ||
986 | ||
3a40aaa0 UW |
987 | /* Handler for library-specific lookup of global symbol NAME in OBJFILE. Call |
988 | the library-specific handler if it is installed for the current target. */ | |
989 | ||
990 | struct symbol * | |
991 | solib_global_lookup (const struct objfile *objfile, | |
992 | const char *name, | |
993 | const char *linkage_name, | |
21b556f4 | 994 | const domain_enum domain) |
3a40aaa0 | 995 | { |
1cf3db46 | 996 | struct target_so_ops *ops = solib_ops (target_gdbarch); |
3a40aaa0 | 997 | |
e8a92f7b | 998 | if (ops->lookup_lib_global_symbol != NULL) |
21b556f4 | 999 | return ops->lookup_lib_global_symbol (objfile, name, linkage_name, domain); |
3a40aaa0 UW |
1000 | return NULL; |
1001 | } | |
1002 | ||
1003 | ||
a78f21af AC |
1004 | extern initialize_file_ftype _initialize_solib; /* -Wmissing-prototypes */ |
1005 | ||
c906108c | 1006 | void |
fba45db2 | 1007 | _initialize_solib (void) |
c906108c | 1008 | { |
fa58ee11 EZ |
1009 | struct cmd_list_element *c; |
1010 | ||
66aba65d MK |
1011 | solib_data = gdbarch_data_register_pre_init (solib_init); |
1012 | ||
c906108c | 1013 | add_com ("sharedlibrary", class_files, sharedlibrary_command, |
1bedd215 | 1014 | _("Load shared object library symbols for files matching REGEXP.")); |
c5aa993b | 1015 | add_info ("sharedlibrary", info_sharedlibrary_command, |
1bedd215 | 1016 | _("Status of loaded shared object libraries.")); |
c60a7562 | 1017 | add_com ("nosharedlibrary", class_files, no_shared_libraries, |
1bedd215 | 1018 | _("Unload all shared object library symbols.")); |
c906108c | 1019 | |
5bf193a2 AC |
1020 | add_setshow_boolean_cmd ("auto-solib-add", class_support, |
1021 | &auto_solib_add, _("\ | |
1022 | Set autoloading of shared library symbols."), _("\ | |
1023 | Show autoloading of shared library symbols."), _("\ | |
b7209cb4 FF |
1024 | If \"on\", symbols from all shared object libraries will be loaded\n\ |
1025 | automatically when the inferior begins execution, when the dynamic linker\n\ | |
1026 | informs gdb that a new library has been loaded, or when attaching to the\n\ | |
5bf193a2 AC |
1027 | inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'."), |
1028 | NULL, | |
920d2a44 | 1029 | show_auto_solib_add, |
5bf193a2 | 1030 | &setlist, &showlist); |
c906108c | 1031 | |
f822c95b DJ |
1032 | add_setshow_filename_cmd ("sysroot", class_support, |
1033 | &gdb_sysroot, _("\ | |
1034 | Set an alternate system root."), _("\ | |
1035 | Show the current system root."), _("\ | |
1036 | The system root is used to load absolute shared library symbol files.\n\ | |
1037 | For other (relative) files, you can add directories using\n\ | |
1038 | `set solib-search-path'."), | |
f397e303 AC |
1039 | reload_shared_libraries, |
1040 | NULL, | |
1041 | &setlist, &showlist); | |
c906108c | 1042 | |
f822c95b DJ |
1043 | add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0, |
1044 | &setlist); | |
1045 | add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0, | |
1046 | &showlist); | |
030292b7 | 1047 | |
525226b5 AC |
1048 | add_setshow_optional_filename_cmd ("solib-search-path", class_support, |
1049 | &solib_search_path, _("\ | |
1050 | Set the search path for loading non-absolute shared library symbol files."), _("\ | |
1051 | Show the search path for loading non-absolute shared library symbol files."), _("\ | |
1052 | This takes precedence over the environment variables PATH and LD_LIBRARY_PATH."), | |
1053 | reload_shared_libraries, | |
920d2a44 | 1054 | show_solib_search_path, |
525226b5 | 1055 | &setlist, &showlist); |
c906108c | 1056 | } |