Commit | Line | Data |
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13437d4b | 1 | /* Handle shared libraries for GDB, the GNU Debugger. |
14a5e767 | 2 | |
6aba47ca DJ |
3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
4 | 2000, 2001, 2002, 2003, 2005, 2006, 2007 Free Software Foundation, Inc. | |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 20 | |
c906108c SS |
21 | #include "defs.h" |
22 | ||
c906108c | 23 | #include <sys/types.h> |
c906108c | 24 | #include <fcntl.h> |
13437d4b | 25 | #include "gdb_string.h" |
c906108c SS |
26 | #include "symtab.h" |
27 | #include "bfd.h" | |
28 | #include "symfile.h" | |
29 | #include "objfiles.h" | |
60250e8b | 30 | #include "exceptions.h" |
c906108c SS |
31 | #include "gdbcore.h" |
32 | #include "command.h" | |
33 | #include "target.h" | |
34 | #include "frame.h" | |
88987551 | 35 | #include "gdb_regex.h" |
c906108c SS |
36 | #include "inferior.h" |
37 | #include "environ.h" | |
38 | #include "language.h" | |
39 | #include "gdbcmd.h" | |
fa58ee11 | 40 | #include "completer.h" |
fe4e3eb8 | 41 | #include "filenames.h" /* for DOSish file names */ |
4646aa9d | 42 | #include "exec.h" |
13437d4b | 43 | #include "solist.h" |
84acb35a | 44 | #include "observer.h" |
dbda9972 | 45 | #include "readline/readline.h" |
c906108c | 46 | |
66aba65d MK |
47 | /* Architecture-specific operations. */ |
48 | ||
49 | /* Per-architecture data key. */ | |
50 | static struct gdbarch_data *solib_data; | |
51 | ||
52 | static void * | |
53 | solib_init (struct obstack *obstack) | |
54 | { | |
55 | struct target_so_ops **ops; | |
56 | ||
57 | ops = OBSTACK_ZALLOC (obstack, struct target_so_ops *); | |
58 | *ops = current_target_so_ops; | |
59 | return ops; | |
60 | } | |
61 | ||
62 | static struct target_so_ops * | |
63 | solib_ops (struct gdbarch *gdbarch) | |
64 | { | |
65 | struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data); | |
66 | return *ops; | |
67 | } | |
7d522c90 DJ |
68 | |
69 | /* Set the solib operations for GDBARCH to NEW_OPS. */ | |
70 | ||
71 | void | |
72 | set_solib_ops (struct gdbarch *gdbarch, struct target_so_ops *new_ops) | |
73 | { | |
74 | struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data); | |
75 | *ops = new_ops; | |
76 | } | |
66aba65d MK |
77 | \f |
78 | ||
13437d4b | 79 | /* external data declarations */ |
c906108c | 80 | |
7d522c90 DJ |
81 | /* FIXME: gdbarch needs to control this variable, or else every |
82 | configuration needs to call set_solib_ops. */ | |
13437d4b | 83 | struct target_so_ops *current_target_so_ops; |
23e04971 MS |
84 | |
85 | /* local data declarations */ | |
07cd4b97 | 86 | |
c906108c | 87 | static struct so_list *so_list_head; /* List of known shared objects */ |
23e04971 | 88 | |
c5aa993b | 89 | static int solib_cleanup_queued = 0; /* make_run_cleanup called */ |
c906108c | 90 | |
c906108c SS |
91 | /* Local function prototypes */ |
92 | ||
4efb68b1 | 93 | static void do_clear_solib (void *); |
c906108c | 94 | |
c906108c SS |
95 | /* If non-empty, this is a search path for loading non-absolute shared library |
96 | symbol files. This takes precedence over the environment variables PATH | |
97 | and LD_LIBRARY_PATH. */ | |
98 | static char *solib_search_path = NULL; | |
920d2a44 AC |
99 | static void |
100 | show_solib_search_path (struct ui_file *file, int from_tty, | |
101 | struct cmd_list_element *c, const char *value) | |
102 | { | |
103 | fprintf_filtered (file, _("\ | |
104 | The search path for loading non-absolute shared library symbol files is %s.\n"), | |
105 | value); | |
106 | } | |
c906108c | 107 | |
e4f7b8c8 MS |
108 | /* |
109 | ||
110 | GLOBAL FUNCTION | |
111 | ||
112 | solib_open -- Find a shared library file and open it. | |
113 | ||
114 | SYNOPSIS | |
115 | ||
116 | int solib_open (char *in_patname, char **found_pathname); | |
117 | ||
118 | DESCRIPTION | |
119 | ||
f822c95b | 120 | Global variable GDB_SYSROOT is used as a prefix directory |
e4f7b8c8 MS |
121 | to search for shared libraries if they have an absolute path. |
122 | ||
123 | Global variable SOLIB_SEARCH_PATH is used as a prefix directory | |
124 | (or set of directories, as in LD_LIBRARY_PATH) to search for all | |
f822c95b | 125 | shared libraries if not found in GDB_SYSROOT. |
e4f7b8c8 | 126 | |
c8c18e65 | 127 | Search algorithm: |
f822c95b DJ |
128 | * If there is a gdb_sysroot and path is absolute: |
129 | * Search for gdb_sysroot/path. | |
c8c18e65 KW |
130 | * else |
131 | * Look for it literally (unmodified). | |
e4f7b8c8 | 132 | * Look in SOLIB_SEARCH_PATH. |
f43caff8 | 133 | * If available, use target defined search function. |
f822c95b | 134 | * If gdb_sysroot is NOT set, perform the following two searches: |
c8c18e65 KW |
135 | * Look in inferior's $PATH. |
136 | * Look in inferior's $LD_LIBRARY_PATH. | |
137 | * | |
138 | * The last check avoids doing this search when targetting remote | |
f822c95b | 139 | * machines since gdb_sysroot will almost always be set. |
e4f7b8c8 MS |
140 | |
141 | RETURNS | |
b21f0843 | 142 | |
e4f7b8c8 MS |
143 | file handle for opened solib, or -1 for failure. */ |
144 | ||
145 | int | |
146 | solib_open (char *in_pathname, char **found_pathname) | |
147 | { | |
66aba65d | 148 | struct target_so_ops *ops = solib_ops (current_gdbarch); |
e4f7b8c8 MS |
149 | int found_file = -1; |
150 | char *temp_pathname = NULL; | |
fe4e3eb8 | 151 | char *p = in_pathname; |
f822c95b | 152 | int gdb_sysroot_is_empty; |
58dc52c3 | 153 | |
f822c95b | 154 | gdb_sysroot_is_empty = (gdb_sysroot == NULL || *gdb_sysroot == 0); |
e4f7b8c8 | 155 | |
f822c95b | 156 | if (! IS_ABSOLUTE_PATH (in_pathname) || gdb_sysroot_is_empty) |
f1d10cfb AS |
157 | temp_pathname = in_pathname; |
158 | else | |
e4f7b8c8 | 159 | { |
f822c95b | 160 | int prefix_len = strlen (gdb_sysroot); |
f1d10cfb AS |
161 | |
162 | /* Remove trailing slashes from absolute prefix. */ | |
163 | while (prefix_len > 0 | |
f822c95b | 164 | && IS_DIR_SEPARATOR (gdb_sysroot[prefix_len - 1])) |
f1d10cfb AS |
165 | prefix_len--; |
166 | ||
167 | /* Cat the prefixed pathname together. */ | |
168 | temp_pathname = alloca (prefix_len + strlen (in_pathname) + 1); | |
f822c95b | 169 | strncpy (temp_pathname, gdb_sysroot, prefix_len); |
f1d10cfb AS |
170 | temp_pathname[prefix_len] = '\0'; |
171 | strcat (temp_pathname, in_pathname); | |
e4f7b8c8 MS |
172 | } |
173 | ||
f1d10cfb AS |
174 | /* Now see if we can open it. */ |
175 | found_file = open (temp_pathname, O_RDONLY | O_BINARY, 0); | |
176 | ||
0997b535 MS |
177 | /* We try to find the library in various ways. After each attempt |
178 | (except for the one above), either found_file >= 0 and | |
179 | temp_pathname is a malloc'd string, or found_file < 0 and | |
180 | temp_pathname does not point to storage that needs to be | |
181 | freed. */ | |
182 | ||
183 | if (found_file < 0) | |
184 | temp_pathname = NULL; | |
185 | else | |
186 | temp_pathname = xstrdup (temp_pathname); | |
187 | ||
f822c95b | 188 | /* If the search in gdb_sysroot failed, and the path name is |
ba5f0d88 OF |
189 | absolute at this point, make it relative. (openp will try and open the |
190 | file according to its absolute path otherwise, which is not what we want.) | |
191 | Affects subsequent searches for this solib. */ | |
192 | if (found_file < 0 && IS_ABSOLUTE_PATH (in_pathname)) | |
193 | { | |
194 | /* First, get rid of any drive letters etc. */ | |
195 | while (!IS_DIR_SEPARATOR (*in_pathname)) | |
196 | in_pathname++; | |
197 | ||
198 | /* Next, get rid of all leading dir separators. */ | |
199 | while (IS_DIR_SEPARATOR (*in_pathname)) | |
200 | in_pathname++; | |
201 | } | |
202 | ||
c8c18e65 | 203 | /* If not found, search the solib_search_path (if any). */ |
e4f7b8c8 | 204 | if (found_file < 0 && solib_search_path != NULL) |
014d698b | 205 | found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST, |
637d6690 | 206 | in_pathname, O_RDONLY | O_BINARY, 0, &temp_pathname); |
ba5f0d88 OF |
207 | |
208 | /* If not found, next search the solib_search_path (if any) for the basename | |
209 | only (ignoring the path). This is to allow reading solibs from a path | |
210 | that differs from the opened path. */ | |
211 | if (found_file < 0 && solib_search_path != NULL) | |
014d698b | 212 | found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST, |
637d6690 | 213 | lbasename (in_pathname), O_RDONLY | O_BINARY, 0, |
ba5f0d88 | 214 | &temp_pathname); |
e4f7b8c8 | 215 | |
2610b0bf | 216 | /* If not found, try to use target supplied solib search method */ |
66aba65d | 217 | if (found_file < 0 && ops->find_and_open_solib) |
637d6690 | 218 | found_file = ops->find_and_open_solib (in_pathname, O_RDONLY | O_BINARY, |
66aba65d | 219 | &temp_pathname); |
2610b0bf | 220 | |
e4f7b8c8 | 221 | /* If not found, next search the inferior's $PATH environment variable. */ |
f822c95b | 222 | if (found_file < 0 && gdb_sysroot_is_empty) |
e4f7b8c8 | 223 | found_file = openp (get_in_environ (inferior_environ, "PATH"), |
637d6690 | 224 | OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY, 0, |
014d698b | 225 | &temp_pathname); |
e4f7b8c8 MS |
226 | |
227 | /* If not found, next search the inferior's $LD_LIBRARY_PATH | |
228 | environment variable. */ | |
f822c95b | 229 | if (found_file < 0 && gdb_sysroot_is_empty) |
e4f7b8c8 | 230 | found_file = openp (get_in_environ (inferior_environ, "LD_LIBRARY_PATH"), |
637d6690 | 231 | OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY, 0, |
014d698b | 232 | &temp_pathname); |
e4f7b8c8 MS |
233 | |
234 | /* Done. If not found, tough luck. Return found_file and | |
235 | (optionally) found_pathname. */ | |
0997b535 MS |
236 | if (temp_pathname) |
237 | { | |
238 | if (found_pathname != NULL) | |
239 | *found_pathname = temp_pathname; | |
240 | else | |
241 | xfree (temp_pathname); | |
242 | } | |
e4f7b8c8 MS |
243 | return found_file; |
244 | } | |
245 | ||
246 | ||
c906108c SS |
247 | /* |
248 | ||
c5aa993b | 249 | LOCAL FUNCTION |
c906108c | 250 | |
c5aa993b | 251 | solib_map_sections -- open bfd and build sections for shared lib |
c906108c | 252 | |
c5aa993b | 253 | SYNOPSIS |
c906108c | 254 | |
c5aa993b | 255 | static int solib_map_sections (struct so_list *so) |
c906108c | 256 | |
c5aa993b | 257 | DESCRIPTION |
c906108c | 258 | |
c5aa993b JM |
259 | Given a pointer to one of the shared objects in our list |
260 | of mapped objects, use the recorded name to open a bfd | |
261 | descriptor for the object, build a section table, and then | |
262 | relocate all the section addresses by the base address at | |
263 | which the shared object was mapped. | |
c906108c | 264 | |
c5aa993b | 265 | FIXMES |
c906108c | 266 | |
c5aa993b JM |
267 | In most (all?) cases the shared object file name recorded in the |
268 | dynamic linkage tables will be a fully qualified pathname. For | |
269 | cases where it isn't, do we really mimic the systems search | |
270 | mechanism correctly in the below code (particularly the tilde | |
271 | expansion stuff?). | |
c906108c SS |
272 | */ |
273 | ||
274 | static int | |
4efb68b1 | 275 | solib_map_sections (void *arg) |
c906108c SS |
276 | { |
277 | struct so_list *so = (struct so_list *) arg; /* catch_errors bogon */ | |
278 | char *filename; | |
279 | char *scratch_pathname; | |
280 | int scratch_chan; | |
281 | struct section_table *p; | |
282 | struct cleanup *old_chain; | |
283 | bfd *abfd; | |
c5aa993b JM |
284 | |
285 | filename = tilde_expand (so->so_name); | |
286 | ||
b8c9b27d | 287 | old_chain = make_cleanup (xfree, filename); |
e4f7b8c8 | 288 | scratch_chan = solib_open (filename, &scratch_pathname); |
c906108c | 289 | |
c906108c SS |
290 | if (scratch_chan < 0) |
291 | { | |
13437d4b KB |
292 | perror_with_name (filename); |
293 | } | |
104c1213 | 294 | |
e4f7b8c8 | 295 | /* Leave scratch_pathname allocated. abfd->name will point to it. */ |
9f76c2cd | 296 | abfd = bfd_fopen (scratch_pathname, gnutarget, FOPEN_RB, scratch_chan); |
13437d4b | 297 | if (!abfd) |
23e04971 | 298 | { |
13437d4b | 299 | close (scratch_chan); |
8a3fe4f8 | 300 | error (_("Could not open `%s' as an executable file: %s"), |
13437d4b KB |
301 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
302 | } | |
e4f7b8c8 | 303 | |
13437d4b KB |
304 | /* Leave bfd open, core_xfer_memory and "info files" need it. */ |
305 | so->abfd = abfd; | |
549c1eea | 306 | bfd_set_cacheable (abfd, 1); |
23e04971 | 307 | |
e4f7b8c8 MS |
308 | /* copy full path name into so_name, so that later symbol_file_add |
309 | can find it */ | |
13437d4b | 310 | if (strlen (scratch_pathname) >= SO_NAME_MAX_PATH_SIZE) |
8a3fe4f8 | 311 | error (_("Full path name length of shared library exceeds SO_NAME_MAX_PATH_SIZE in so_list structure.")); |
13437d4b | 312 | strcpy (so->so_name, scratch_pathname); |
23e04971 | 313 | |
13437d4b KB |
314 | if (!bfd_check_format (abfd, bfd_object)) |
315 | { | |
8a3fe4f8 | 316 | error (_("\"%s\": not in executable format: %s."), |
13437d4b | 317 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
23e04971 | 318 | } |
13437d4b | 319 | if (build_section_table (abfd, &so->sections, &so->sections_end)) |
23e04971 | 320 | { |
8a3fe4f8 | 321 | error (_("Can't find the file sections in `%s': %s"), |
13437d4b | 322 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
23e04971 | 323 | } |
104c1213 | 324 | |
13437d4b | 325 | for (p = so->sections; p < so->sections_end; p++) |
104c1213 | 326 | { |
66aba65d MK |
327 | struct target_so_ops *ops = solib_ops (current_gdbarch); |
328 | ||
13437d4b KB |
329 | /* Relocate the section binding addresses as recorded in the shared |
330 | object's file by the base address to which the object was actually | |
331 | mapped. */ | |
66aba65d | 332 | ops->relocate_section_addresses (so, p); |
cfa9d6d9 DJ |
333 | |
334 | /* If the target didn't provide information about the address | |
335 | range of the shared object, assume we want the location of | |
336 | the .text section. */ | |
337 | if (so->addr_low == 0 && so->addr_high == 0 | |
338 | && strcmp (p->the_bfd_section->name, ".text") == 0) | |
13437d4b | 339 | { |
cfa9d6d9 DJ |
340 | so->addr_low = p->addr; |
341 | so->addr_high = p->endaddr; | |
13437d4b | 342 | } |
104c1213 JM |
343 | } |
344 | ||
13437d4b KB |
345 | /* Free the file names, close the file now. */ |
346 | do_cleanups (old_chain); | |
104c1213 | 347 | |
13437d4b | 348 | return (1); |
104c1213 | 349 | } |
c906108c | 350 | |
07cd4b97 | 351 | /* LOCAL FUNCTION |
c906108c | 352 | |
07cd4b97 | 353 | free_so --- free a `struct so_list' object |
c906108c | 354 | |
c5aa993b | 355 | SYNOPSIS |
c906108c | 356 | |
07cd4b97 | 357 | void free_so (struct so_list *so) |
c906108c | 358 | |
c5aa993b | 359 | DESCRIPTION |
c906108c | 360 | |
07cd4b97 JB |
361 | Free the storage associated with the `struct so_list' object SO. |
362 | If we have opened a BFD for SO, close it. | |
c906108c | 363 | |
07cd4b97 JB |
364 | The caller is responsible for removing SO from whatever list it is |
365 | a member of. If we have placed SO's sections in some target's | |
366 | section table, the caller is responsible for removing them. | |
c906108c | 367 | |
07cd4b97 JB |
368 | This function doesn't mess with objfiles at all. If there is an |
369 | objfile associated with SO that needs to be removed, the caller is | |
370 | responsible for taking care of that. */ | |
371 | ||
13437d4b | 372 | void |
07cd4b97 | 373 | free_so (struct so_list *so) |
c906108c | 374 | { |
66aba65d | 375 | struct target_so_ops *ops = solib_ops (current_gdbarch); |
07cd4b97 | 376 | char *bfd_filename = 0; |
c5aa993b | 377 | |
07cd4b97 | 378 | if (so->sections) |
b8c9b27d | 379 | xfree (so->sections); |
07cd4b97 JB |
380 | |
381 | if (so->abfd) | |
c906108c | 382 | { |
07cd4b97 JB |
383 | bfd_filename = bfd_get_filename (so->abfd); |
384 | if (! bfd_close (so->abfd)) | |
8a3fe4f8 | 385 | warning (_("cannot close \"%s\": %s"), |
07cd4b97 | 386 | bfd_filename, bfd_errmsg (bfd_get_error ())); |
c906108c | 387 | } |
07cd4b97 JB |
388 | |
389 | if (bfd_filename) | |
b8c9b27d | 390 | xfree (bfd_filename); |
07cd4b97 | 391 | |
66aba65d | 392 | ops->free_so (so); |
07cd4b97 | 393 | |
b8c9b27d | 394 | xfree (so); |
c906108c SS |
395 | } |
396 | ||
07cd4b97 | 397 | |
f8766ec1 KB |
398 | /* Return address of first so_list entry in master shared object list. */ |
399 | struct so_list * | |
400 | master_so_list (void) | |
401 | { | |
402 | return so_list_head; | |
403 | } | |
404 | ||
405 | ||
c906108c SS |
406 | /* A small stub to get us past the arg-passing pinhole of catch_errors. */ |
407 | ||
408 | static int | |
4efb68b1 | 409 | symbol_add_stub (void *arg) |
c906108c | 410 | { |
52f0bd74 | 411 | struct so_list *so = (struct so_list *) arg; /* catch_errs bogon */ |
62557bbc | 412 | struct section_addr_info *sap; |
c906108c | 413 | |
07cd4b97 JB |
414 | /* Have we already loaded this shared object? */ |
415 | ALL_OBJFILES (so->objfile) | |
416 | { | |
417 | if (strcmp (so->objfile->name, so->so_name) == 0) | |
418 | return 1; | |
419 | } | |
420 | ||
62557bbc KB |
421 | sap = build_section_addr_info_from_section_table (so->sections, |
422 | so->sections_end); | |
e7cf9df1 | 423 | |
62557bbc KB |
424 | so->objfile = symbol_file_add (so->so_name, so->from_tty, |
425 | sap, 0, OBJF_SHARED); | |
426 | free_section_addr_info (sap); | |
c906108c | 427 | |
07cd4b97 | 428 | return (1); |
c906108c SS |
429 | } |
430 | ||
42a6e6a0 MK |
431 | /* Read in symbols for shared object SO. If FROM_TTY is non-zero, be |
432 | chatty about it. Return non-zero if any symbols were actually | |
433 | loaded. */ | |
434 | ||
435 | int | |
436 | solib_read_symbols (struct so_list *so, int from_tty) | |
437 | { | |
438 | if (so->symbols_loaded) | |
439 | { | |
440 | if (from_tty) | |
a3f17187 | 441 | printf_unfiltered (_("Symbols already loaded for %s\n"), so->so_name); |
42a6e6a0 | 442 | } |
8bb75286 DJ |
443 | else if (so->abfd == NULL) |
444 | { | |
445 | if (from_tty) | |
446 | printf_unfiltered (_("Symbol file not found for %s\n"), so->so_name); | |
447 | } | |
42a6e6a0 MK |
448 | else |
449 | { | |
450 | if (catch_errors (symbol_add_stub, so, | |
451 | "Error while reading shared library symbols:\n", | |
452 | RETURN_MASK_ALL)) | |
453 | { | |
454 | if (from_tty) | |
a3f17187 | 455 | printf_unfiltered (_("Loaded symbols for %s\n"), so->so_name); |
42a6e6a0 MK |
456 | so->symbols_loaded = 1; |
457 | return 1; | |
458 | } | |
459 | } | |
460 | ||
461 | return 0; | |
462 | } | |
c906108c | 463 | |
07cd4b97 | 464 | /* LOCAL FUNCTION |
c906108c | 465 | |
105b175f | 466 | update_solib_list --- synchronize GDB's shared object list with inferior's |
c906108c | 467 | |
c5aa993b | 468 | SYNOPSIS |
c906108c | 469 | |
105b175f | 470 | void update_solib_list (int from_tty, struct target_ops *TARGET) |
c906108c | 471 | |
07cd4b97 | 472 | Extract the list of currently loaded shared objects from the |
105b175f JB |
473 | inferior, and compare it with the list of shared objects currently |
474 | in GDB's so_list_head list. Edit so_list_head to bring it in sync | |
475 | with the inferior's new list. | |
c906108c | 476 | |
105b175f JB |
477 | If we notice that the inferior has unloaded some shared objects, |
478 | free any symbolic info GDB had read about those shared objects. | |
479 | ||
480 | Don't load symbolic info for any new shared objects; just add them | |
481 | to the list, and leave their symbols_loaded flag clear. | |
07cd4b97 JB |
482 | |
483 | If FROM_TTY is non-null, feel free to print messages about what | |
484 | we're doing. | |
c906108c | 485 | |
07cd4b97 JB |
486 | If TARGET is non-null, add the sections of all new shared objects |
487 | to TARGET's section table. Note that this doesn't remove any | |
488 | sections for shared objects that have been unloaded, and it | |
489 | doesn't check to see if the new shared objects are already present in | |
490 | the section table. But we only use this for core files and | |
491 | processes we've just attached to, so that's okay. */ | |
c906108c | 492 | |
a78f21af | 493 | static void |
105b175f | 494 | update_solib_list (int from_tty, struct target_ops *target) |
07cd4b97 | 495 | { |
66aba65d MK |
496 | struct target_so_ops *ops = solib_ops (current_gdbarch); |
497 | struct so_list *inferior = ops->current_sos(); | |
07cd4b97 JB |
498 | struct so_list *gdb, **gdb_link; |
499 | ||
104c1213 JM |
500 | /* If we are attaching to a running process for which we |
501 | have not opened a symbol file, we may be able to get its | |
502 | symbols now! */ | |
503 | if (attach_flag && | |
504 | symfile_objfile == NULL) | |
66aba65d | 505 | catch_errors (ops->open_symbol_file_object, &from_tty, |
104c1213 JM |
506 | "Error reading attached process's symbol file.\n", |
507 | RETURN_MASK_ALL); | |
508 | ||
07cd4b97 JB |
509 | /* Since this function might actually add some elements to the |
510 | so_list_head list, arrange for it to be cleaned up when | |
511 | appropriate. */ | |
512 | if (!solib_cleanup_queued) | |
513 | { | |
514 | make_run_cleanup (do_clear_solib, NULL); | |
515 | solib_cleanup_queued = 1; | |
c906108c | 516 | } |
c5aa993b | 517 | |
07cd4b97 JB |
518 | /* GDB and the inferior's dynamic linker each maintain their own |
519 | list of currently loaded shared objects; we want to bring the | |
520 | former in sync with the latter. Scan both lists, seeing which | |
521 | shared objects appear where. There are three cases: | |
522 | ||
523 | - A shared object appears on both lists. This means that GDB | |
105b175f JB |
524 | knows about it already, and it's still loaded in the inferior. |
525 | Nothing needs to happen. | |
07cd4b97 JB |
526 | |
527 | - A shared object appears only on GDB's list. This means that | |
105b175f JB |
528 | the inferior has unloaded it. We should remove the shared |
529 | object from GDB's tables. | |
07cd4b97 JB |
530 | |
531 | - A shared object appears only on the inferior's list. This | |
105b175f JB |
532 | means that it's just been loaded. We should add it to GDB's |
533 | tables. | |
07cd4b97 JB |
534 | |
535 | So we walk GDB's list, checking each entry to see if it appears | |
536 | in the inferior's list too. If it does, no action is needed, and | |
537 | we remove it from the inferior's list. If it doesn't, the | |
538 | inferior has unloaded it, and we remove it from GDB's list. By | |
539 | the time we're done walking GDB's list, the inferior's list | |
540 | contains only the new shared objects, which we then add. */ | |
541 | ||
542 | gdb = so_list_head; | |
543 | gdb_link = &so_list_head; | |
544 | while (gdb) | |
c906108c | 545 | { |
07cd4b97 JB |
546 | struct so_list *i = inferior; |
547 | struct so_list **i_link = &inferior; | |
548 | ||
549 | /* Check to see whether the shared object *gdb also appears in | |
550 | the inferior's current list. */ | |
551 | while (i) | |
c906108c | 552 | { |
07cd4b97 JB |
553 | if (! strcmp (gdb->so_original_name, i->so_original_name)) |
554 | break; | |
555 | ||
556 | i_link = &i->next; | |
557 | i = *i_link; | |
c906108c | 558 | } |
c5aa993b | 559 | |
07cd4b97 JB |
560 | /* If the shared object appears on the inferior's list too, then |
561 | it's still loaded, so we don't need to do anything. Delete | |
562 | it from the inferior's list, and leave it on GDB's list. */ | |
563 | if (i) | |
c906108c | 564 | { |
07cd4b97 | 565 | *i_link = i->next; |
07cd4b97 JB |
566 | free_so (i); |
567 | gdb_link = &gdb->next; | |
568 | gdb = *gdb_link; | |
569 | } | |
570 | ||
571 | /* If it's not on the inferior's list, remove it from GDB's tables. */ | |
572 | else | |
573 | { | |
42a6e6a0 MK |
574 | /* Notify any observer that the shared object has been |
575 | unloaded before we remove it from GDB's tables. */ | |
84acb35a JJ |
576 | observer_notify_solib_unloaded (gdb); |
577 | ||
07cd4b97 | 578 | *gdb_link = gdb->next; |
07cd4b97 JB |
579 | |
580 | /* Unless the user loaded it explicitly, free SO's objfile. */ | |
e8930304 | 581 | if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED)) |
07cd4b97 JB |
582 | free_objfile (gdb->objfile); |
583 | ||
584 | /* Some targets' section tables might be referring to | |
585 | sections from so->abfd; remove them. */ | |
586 | remove_target_sections (gdb->abfd); | |
587 | ||
588 | free_so (gdb); | |
589 | gdb = *gdb_link; | |
c906108c SS |
590 | } |
591 | } | |
c5aa993b | 592 | |
07cd4b97 JB |
593 | /* Now the inferior's list contains only shared objects that don't |
594 | appear in GDB's list --- those that are newly loaded. Add them | |
e8930304 | 595 | to GDB's shared object list. */ |
07cd4b97 | 596 | if (inferior) |
c906108c | 597 | { |
07cd4b97 JB |
598 | struct so_list *i; |
599 | ||
600 | /* Add the new shared objects to GDB's list. */ | |
601 | *gdb_link = inferior; | |
602 | ||
e8930304 | 603 | /* Fill in the rest of each of the `struct so_list' nodes. */ |
07cd4b97 | 604 | for (i = inferior; i; i = i->next) |
c906108c | 605 | { |
07cd4b97 JB |
606 | i->from_tty = from_tty; |
607 | ||
608 | /* Fill in the rest of the `struct so_list' node. */ | |
609 | catch_errors (solib_map_sections, i, | |
610 | "Error while mapping shared library sections:\n", | |
611 | RETURN_MASK_ALL); | |
07cd4b97 | 612 | |
b41be06e ND |
613 | /* If requested, add the shared object's sections to the TARGET's |
614 | section table. Do this immediately after mapping the object so | |
615 | that later nodes in the list can query this object, as is needed | |
616 | in solib-osf.c. */ | |
617 | if (target) | |
c906108c | 618 | { |
b41be06e ND |
619 | int count = (i->sections_end - i->sections); |
620 | if (count > 0) | |
07cd4b97 | 621 | { |
b41be06e | 622 | int space = target_resize_to_sections (target, count); |
07cd4b97 JB |
623 | memcpy (target->to_sections + space, |
624 | i->sections, | |
625 | count * sizeof (i->sections[0])); | |
07cd4b97 | 626 | } |
c906108c | 627 | } |
42a6e6a0 MK |
628 | |
629 | /* Notify any observer that the shared object has been | |
630 | loaded now that we've added it to GDB's tables. */ | |
631 | observer_notify_solib_loaded (i); | |
c906108c | 632 | } |
e8930304 | 633 | } |
105b175f JB |
634 | } |
635 | ||
6612ad7f JB |
636 | /* Return non-zero if SO is the libpthread shared library. |
637 | ||
638 | Uses a fairly simplistic heuristic approach where we check | |
639 | the file name against "/libpthread". This can lead to false | |
640 | positives, but this should be good enough in practice. */ | |
641 | ||
642 | static int | |
643 | libpthread_solib_p (struct so_list *so) | |
644 | { | |
645 | return (strstr (so->so_name, "/libpthread") != NULL); | |
646 | } | |
105b175f JB |
647 | |
648 | /* GLOBAL FUNCTION | |
649 | ||
650 | solib_add -- read in symbol info for newly added shared libraries | |
651 | ||
652 | SYNOPSIS | |
653 | ||
990f9fe3 FF |
654 | void solib_add (char *pattern, int from_tty, struct target_ops |
655 | *TARGET, int readsyms) | |
105b175f JB |
656 | |
657 | DESCRIPTION | |
658 | ||
659 | Read in symbolic information for any shared objects whose names | |
660 | match PATTERN. (If we've already read a shared object's symbol | |
661 | info, leave it alone.) If PATTERN is zero, read them all. | |
662 | ||
990f9fe3 FF |
663 | If READSYMS is 0, defer reading symbolic information until later |
664 | but still do any needed low level processing. | |
665 | ||
105b175f JB |
666 | FROM_TTY and TARGET are as described for update_solib_list, above. */ |
667 | ||
668 | void | |
990f9fe3 | 669 | solib_add (char *pattern, int from_tty, struct target_ops *target, int readsyms) |
105b175f JB |
670 | { |
671 | struct so_list *gdb; | |
672 | ||
673 | if (pattern) | |
674 | { | |
675 | char *re_err = re_comp (pattern); | |
676 | ||
677 | if (re_err) | |
8a3fe4f8 | 678 | error (_("Invalid regexp: %s"), re_err); |
105b175f JB |
679 | } |
680 | ||
681 | update_solib_list (from_tty, target); | |
c906108c | 682 | |
105b175f JB |
683 | /* Walk the list of currently loaded shared libraries, and read |
684 | symbols for any that match the pattern --- or any whose symbols | |
685 | aren't already loaded, if no pattern was given. */ | |
e8930304 JB |
686 | { |
687 | int any_matches = 0; | |
688 | int loaded_any_symbols = 0; | |
c906108c | 689 | |
e8930304 JB |
690 | for (gdb = so_list_head; gdb; gdb = gdb->next) |
691 | if (! pattern || re_exec (gdb->so_name)) | |
692 | { | |
6612ad7f JB |
693 | /* Normally, we would read the symbols from that library |
694 | only if READSYMS is set. However, we're making a small | |
695 | exception for the pthread library, because we sometimes | |
696 | need the library symbols to be loaded in order to provide | |
697 | thread support (x86-linux for instance). */ | |
698 | const int add_this_solib = | |
699 | (readsyms || libpthread_solib_p (gdb)); | |
700 | ||
e8930304 | 701 | any_matches = 1; |
6612ad7f | 702 | if (add_this_solib && solib_read_symbols (gdb, from_tty)) |
42a6e6a0 | 703 | loaded_any_symbols = 1; |
e8930304 JB |
704 | } |
705 | ||
706 | if (from_tty && pattern && ! any_matches) | |
707 | printf_unfiltered | |
708 | ("No loaded shared libraries match the pattern `%s'.\n", pattern); | |
709 | ||
710 | if (loaded_any_symbols) | |
711 | { | |
66aba65d MK |
712 | struct target_so_ops *ops = solib_ops (current_gdbarch); |
713 | ||
e8930304 JB |
714 | /* Getting new symbols may change our opinion about what is |
715 | frameless. */ | |
716 | reinit_frame_cache (); | |
717 | ||
66aba65d | 718 | ops->special_symbol_handling (); |
e8930304 JB |
719 | } |
720 | } | |
c906108c SS |
721 | } |
722 | ||
07cd4b97 | 723 | |
c906108c SS |
724 | /* |
725 | ||
c5aa993b | 726 | LOCAL FUNCTION |
c906108c | 727 | |
c5aa993b | 728 | info_sharedlibrary_command -- code for "info sharedlibrary" |
c906108c | 729 | |
c5aa993b | 730 | SYNOPSIS |
c906108c | 731 | |
c5aa993b | 732 | static void info_sharedlibrary_command () |
c906108c | 733 | |
c5aa993b | 734 | DESCRIPTION |
c906108c | 735 | |
c5aa993b JM |
736 | Walk through the shared library list and print information |
737 | about each attached library. | |
738 | */ | |
c906108c SS |
739 | |
740 | static void | |
fba45db2 | 741 | info_sharedlibrary_command (char *ignore, int from_tty) |
c906108c | 742 | { |
52f0bd74 | 743 | struct so_list *so = NULL; /* link map state variable */ |
c906108c SS |
744 | int header_done = 0; |
745 | int addr_width; | |
c906108c | 746 | |
84eb3c4f | 747 | /* "0x", a little whitespace, and two hex digits per byte of pointers. */ |
819844ad | 748 | addr_width = 4 + (gdbarch_ptr_bit (current_gdbarch) / 4); |
c906108c | 749 | |
105b175f | 750 | update_solib_list (from_tty, 0); |
07cd4b97 JB |
751 | |
752 | for (so = so_list_head; so; so = so->next) | |
c906108c | 753 | { |
c5aa993b | 754 | if (so->so_name[0]) |
c906108c SS |
755 | { |
756 | if (!header_done) | |
757 | { | |
c5aa993b JM |
758 | printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width, "From", |
759 | addr_width, "To", "Syms Read", | |
760 | "Shared Object Library"); | |
c906108c SS |
761 | header_done++; |
762 | } | |
763 | ||
764 | printf_unfiltered ("%-*s", addr_width, | |
cfa9d6d9 | 765 | so->addr_high != 0 |
bb599908 | 766 | ? hex_string_custom ( |
cfa9d6d9 | 767 | (LONGEST) so->addr_low, |
bb599908 | 768 | addr_width - 4) |
749499cb | 769 | : ""); |
c906108c | 770 | printf_unfiltered ("%-*s", addr_width, |
cfa9d6d9 | 771 | so->addr_high != 0 |
bb599908 | 772 | ? hex_string_custom ( |
cfa9d6d9 | 773 | (LONGEST) so->addr_high, |
bb599908 | 774 | addr_width - 4) |
749499cb | 775 | : ""); |
c5aa993b JM |
776 | printf_unfiltered ("%-12s", so->symbols_loaded ? "Yes" : "No"); |
777 | printf_unfiltered ("%s\n", so->so_name); | |
c906108c SS |
778 | } |
779 | } | |
780 | if (so_list_head == NULL) | |
781 | { | |
a3f17187 | 782 | printf_unfiltered (_("No shared libraries loaded at this time.\n")); |
c906108c SS |
783 | } |
784 | } | |
785 | ||
786 | /* | |
787 | ||
c5aa993b | 788 | GLOBAL FUNCTION |
c906108c | 789 | |
c5aa993b | 790 | solib_address -- check to see if an address is in a shared lib |
c906108c | 791 | |
c5aa993b | 792 | SYNOPSIS |
c906108c | 793 | |
c5aa993b | 794 | char * solib_address (CORE_ADDR address) |
c906108c | 795 | |
c5aa993b | 796 | DESCRIPTION |
c906108c | 797 | |
c5aa993b JM |
798 | Provides a hook for other gdb routines to discover whether or |
799 | not a particular address is within the mapped address space of | |
749499cb | 800 | a shared library. |
c906108c | 801 | |
c5aa993b JM |
802 | For example, this routine is called at one point to disable |
803 | breakpoints which are in shared libraries that are not currently | |
804 | mapped in. | |
c906108c SS |
805 | */ |
806 | ||
807 | char * | |
fba45db2 | 808 | solib_address (CORE_ADDR address) |
c906108c | 809 | { |
52f0bd74 | 810 | struct so_list *so = 0; /* link map state variable */ |
c5aa993b | 811 | |
07cd4b97 | 812 | for (so = so_list_head; so; so = so->next) |
c906108c | 813 | { |
749499cb KB |
814 | struct section_table *p; |
815 | ||
816 | for (p = so->sections; p < so->sections_end; p++) | |
817 | { | |
818 | if (p->addr <= address && address < p->endaddr) | |
819 | return (so->so_name); | |
820 | } | |
c906108c | 821 | } |
07cd4b97 | 822 | |
c906108c SS |
823 | return (0); |
824 | } | |
825 | ||
826 | /* Called by free_all_symtabs */ | |
827 | ||
c5aa993b | 828 | void |
fba45db2 | 829 | clear_solib (void) |
c906108c | 830 | { |
66aba65d MK |
831 | struct target_so_ops *ops = solib_ops (current_gdbarch); |
832 | ||
085dd6e6 JM |
833 | /* This function is expected to handle ELF shared libraries. It is |
834 | also used on Solaris, which can run either ELF or a.out binaries | |
835 | (for compatibility with SunOS 4), both of which can use shared | |
836 | libraries. So we don't know whether we have an ELF executable or | |
837 | an a.out executable until the user chooses an executable file. | |
838 | ||
839 | ELF shared libraries don't get mapped into the address space | |
840 | until after the program starts, so we'd better not try to insert | |
841 | breakpoints in them immediately. We have to wait until the | |
842 | dynamic linker has loaded them; we'll hit a bp_shlib_event | |
843 | breakpoint (look for calls to create_solib_event_breakpoint) when | |
844 | it's ready. | |
845 | ||
846 | SunOS shared libraries seem to be different --- they're present | |
847 | as soon as the process begins execution, so there's no need to | |
848 | put off inserting breakpoints. There's also nowhere to put a | |
849 | bp_shlib_event breakpoint, so if we put it off, we'll never get | |
850 | around to it. | |
851 | ||
852 | So: disable breakpoints only if we're using ELF shared libs. */ | |
853 | if (exec_bfd != NULL | |
854 | && bfd_get_flavour (exec_bfd) != bfd_target_aout_flavour) | |
cb851954 | 855 | disable_breakpoints_in_shlibs (); |
085dd6e6 | 856 | |
c906108c SS |
857 | while (so_list_head) |
858 | { | |
07cd4b97 JB |
859 | struct so_list *so = so_list_head; |
860 | so_list_head = so->next; | |
2069d78d KB |
861 | if (so->abfd) |
862 | remove_target_sections (so->abfd); | |
07cd4b97 | 863 | free_so (so); |
c906108c | 864 | } |
07cd4b97 | 865 | |
66aba65d | 866 | ops->clear_solib (); |
c906108c SS |
867 | } |
868 | ||
869 | static void | |
4efb68b1 | 870 | do_clear_solib (void *dummy) |
c906108c SS |
871 | { |
872 | solib_cleanup_queued = 0; | |
873 | clear_solib (); | |
874 | } | |
875 | ||
13437d4b | 876 | /* GLOBAL FUNCTION |
c5aa993b JM |
877 | |
878 | solib_create_inferior_hook -- shared library startup support | |
879 | ||
880 | SYNOPSIS | |
881 | ||
7095b863 | 882 | void solib_create_inferior_hook () |
c5aa993b JM |
883 | |
884 | DESCRIPTION | |
885 | ||
886 | When gdb starts up the inferior, it nurses it along (through the | |
887 | shell) until it is ready to execute it's first instruction. At this | |
888 | point, this function gets called via expansion of the macro | |
13437d4b | 889 | SOLIB_CREATE_INFERIOR_HOOK. */ |
c5aa993b JM |
890 | |
891 | void | |
fba45db2 | 892 | solib_create_inferior_hook (void) |
c906108c | 893 | { |
66aba65d MK |
894 | struct target_so_ops *ops = solib_ops (current_gdbarch); |
895 | ops->solib_create_inferior_hook(); | |
c906108c SS |
896 | } |
897 | ||
d7fa2ae2 KB |
898 | /* GLOBAL FUNCTION |
899 | ||
900 | in_solib_dynsym_resolve_code -- check to see if an address is in | |
901 | dynamic loader's dynamic symbol | |
902 | resolution code | |
903 | ||
904 | SYNOPSIS | |
905 | ||
906 | int in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
907 | ||
908 | DESCRIPTION | |
909 | ||
910 | Determine if PC is in the dynamic linker's symbol resolution | |
911 | code. Return 1 if so, 0 otherwise. | |
912 | */ | |
913 | ||
914 | int | |
915 | in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
916 | { | |
66aba65d MK |
917 | struct target_so_ops *ops = solib_ops (current_gdbarch); |
918 | return ops->in_dynsym_resolve_code (pc); | |
d7fa2ae2 | 919 | } |
c906108c SS |
920 | |
921 | /* | |
922 | ||
c5aa993b | 923 | LOCAL FUNCTION |
c906108c | 924 | |
c5aa993b | 925 | sharedlibrary_command -- handle command to explicitly add library |
c906108c | 926 | |
c5aa993b | 927 | SYNOPSIS |
c906108c | 928 | |
c5aa993b | 929 | static void sharedlibrary_command (char *args, int from_tty) |
c906108c | 930 | |
c5aa993b | 931 | DESCRIPTION |
c906108c | 932 | |
c5aa993b | 933 | */ |
c906108c SS |
934 | |
935 | static void | |
fba45db2 | 936 | sharedlibrary_command (char *args, int from_tty) |
c906108c SS |
937 | { |
938 | dont_repeat (); | |
990f9fe3 | 939 | solib_add (args, from_tty, (struct target_ops *) 0, 1); |
c906108c SS |
940 | } |
941 | ||
cb0ba49e MS |
942 | /* LOCAL FUNCTION |
943 | ||
944 | no_shared_libraries -- handle command to explicitly discard symbols | |
945 | from shared libraries. | |
946 | ||
947 | DESCRIPTION | |
948 | ||
949 | Implements the command "nosharedlibrary", which discards symbols | |
950 | that have been auto-loaded from shared libraries. Symbols from | |
951 | shared libraries that were added by explicit request of the user | |
952 | are not discarded. Also called from remote.c. */ | |
953 | ||
c60a7562 MS |
954 | void |
955 | no_shared_libraries (char *ignored, int from_tty) | |
956 | { | |
957 | objfile_purge_solibs (); | |
958 | do_clear_solib (NULL); | |
959 | } | |
c906108c | 960 | |
cf466558 | 961 | static void |
f397e303 AC |
962 | reload_shared_libraries (char *ignored, int from_tty, |
963 | struct cmd_list_element *e) | |
cf466558 KB |
964 | { |
965 | no_shared_libraries (NULL, from_tty); | |
966 | solib_add (NULL, from_tty, NULL, auto_solib_add); | |
967 | } | |
968 | ||
920d2a44 AC |
969 | static void |
970 | show_auto_solib_add (struct ui_file *file, int from_tty, | |
971 | struct cmd_list_element *c, const char *value) | |
972 | { | |
973 | fprintf_filtered (file, _("Autoloading of shared library symbols is %s.\n"), | |
974 | value); | |
975 | } | |
976 | ||
977 | ||
3a40aaa0 UW |
978 | /* Handler for library-specific lookup of global symbol NAME in OBJFILE. Call |
979 | the library-specific handler if it is installed for the current target. */ | |
980 | ||
981 | struct symbol * | |
982 | solib_global_lookup (const struct objfile *objfile, | |
983 | const char *name, | |
984 | const char *linkage_name, | |
985 | const domain_enum domain, | |
986 | struct symtab **symtab) | |
987 | { | |
988 | if (current_target_so_ops->lookup_lib_global_symbol != NULL) | |
989 | return current_target_so_ops->lookup_lib_global_symbol (objfile, | |
990 | name, linkage_name, domain, symtab); | |
991 | ||
992 | return NULL; | |
993 | } | |
994 | ||
995 | ||
a78f21af AC |
996 | extern initialize_file_ftype _initialize_solib; /* -Wmissing-prototypes */ |
997 | ||
c906108c | 998 | void |
fba45db2 | 999 | _initialize_solib (void) |
c906108c | 1000 | { |
fa58ee11 EZ |
1001 | struct cmd_list_element *c; |
1002 | ||
66aba65d MK |
1003 | solib_data = gdbarch_data_register_pre_init (solib_init); |
1004 | ||
c906108c | 1005 | add_com ("sharedlibrary", class_files, sharedlibrary_command, |
1bedd215 | 1006 | _("Load shared object library symbols for files matching REGEXP.")); |
c5aa993b | 1007 | add_info ("sharedlibrary", info_sharedlibrary_command, |
1bedd215 | 1008 | _("Status of loaded shared object libraries.")); |
c60a7562 | 1009 | add_com ("nosharedlibrary", class_files, no_shared_libraries, |
1bedd215 | 1010 | _("Unload all shared object library symbols.")); |
c906108c | 1011 | |
5bf193a2 AC |
1012 | add_setshow_boolean_cmd ("auto-solib-add", class_support, |
1013 | &auto_solib_add, _("\ | |
1014 | Set autoloading of shared library symbols."), _("\ | |
1015 | Show autoloading of shared library symbols."), _("\ | |
b7209cb4 FF |
1016 | If \"on\", symbols from all shared object libraries will be loaded\n\ |
1017 | automatically when the inferior begins execution, when the dynamic linker\n\ | |
1018 | informs gdb that a new library has been loaded, or when attaching to the\n\ | |
5bf193a2 AC |
1019 | inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'."), |
1020 | NULL, | |
920d2a44 | 1021 | show_auto_solib_add, |
5bf193a2 | 1022 | &setlist, &showlist); |
c906108c | 1023 | |
f822c95b DJ |
1024 | add_setshow_filename_cmd ("sysroot", class_support, |
1025 | &gdb_sysroot, _("\ | |
1026 | Set an alternate system root."), _("\ | |
1027 | Show the current system root."), _("\ | |
1028 | The system root is used to load absolute shared library symbol files.\n\ | |
1029 | For other (relative) files, you can add directories using\n\ | |
1030 | `set solib-search-path'."), | |
f397e303 AC |
1031 | reload_shared_libraries, |
1032 | NULL, | |
1033 | &setlist, &showlist); | |
c906108c | 1034 | |
f822c95b DJ |
1035 | add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0, |
1036 | &setlist); | |
1037 | add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0, | |
1038 | &showlist); | |
030292b7 | 1039 | |
525226b5 AC |
1040 | add_setshow_optional_filename_cmd ("solib-search-path", class_support, |
1041 | &solib_search_path, _("\ | |
1042 | Set the search path for loading non-absolute shared library symbol files."), _("\ | |
1043 | Show the search path for loading non-absolute shared library symbol files."), _("\ | |
1044 | This takes precedence over the environment variables PATH and LD_LIBRARY_PATH."), | |
1045 | reload_shared_libraries, | |
920d2a44 | 1046 | show_solib_search_path, |
525226b5 | 1047 | &setlist, &showlist); |
c906108c | 1048 | } |