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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 | |
10 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
19 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
20 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
c906108c | 22 | |
c906108c SS |
23 | #include "defs.h" |
24 | ||
c906108c | 25 | #include <sys/types.h> |
c906108c | 26 | #include <fcntl.h> |
13437d4b | 27 | #include "gdb_string.h" |
c906108c SS |
28 | #include "symtab.h" |
29 | #include "bfd.h" | |
30 | #include "symfile.h" | |
31 | #include "objfiles.h" | |
60250e8b | 32 | #include "exceptions.h" |
c906108c SS |
33 | #include "gdbcore.h" |
34 | #include "command.h" | |
35 | #include "target.h" | |
36 | #include "frame.h" | |
88987551 | 37 | #include "gdb_regex.h" |
c906108c SS |
38 | #include "inferior.h" |
39 | #include "environ.h" | |
40 | #include "language.h" | |
41 | #include "gdbcmd.h" | |
fa58ee11 | 42 | #include "completer.h" |
fe4e3eb8 | 43 | #include "filenames.h" /* for DOSish file names */ |
4646aa9d | 44 | #include "exec.h" |
13437d4b | 45 | #include "solist.h" |
84acb35a | 46 | #include "observer.h" |
dbda9972 | 47 | #include "readline/readline.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 | |
c5aa993b | 91 | static int solib_cleanup_queued = 0; /* make_run_cleanup called */ |
c906108c | 92 | |
c906108c SS |
93 | /* Local function prototypes */ |
94 | ||
4efb68b1 | 95 | static void do_clear_solib (void *); |
c906108c | 96 | |
c906108c SS |
97 | /* If non-empty, this is a search path for loading non-absolute shared library |
98 | symbol files. This takes precedence over the environment variables PATH | |
99 | and LD_LIBRARY_PATH. */ | |
100 | static char *solib_search_path = NULL; | |
920d2a44 AC |
101 | static void |
102 | show_solib_search_path (struct ui_file *file, int from_tty, | |
103 | struct cmd_list_element *c, const char *value) | |
104 | { | |
105 | fprintf_filtered (file, _("\ | |
106 | The search path for loading non-absolute shared library symbol files is %s.\n"), | |
107 | value); | |
108 | } | |
c906108c | 109 | |
e4f7b8c8 MS |
110 | /* |
111 | ||
112 | GLOBAL FUNCTION | |
113 | ||
114 | solib_open -- Find a shared library file and open it. | |
115 | ||
116 | SYNOPSIS | |
117 | ||
118 | int solib_open (char *in_patname, char **found_pathname); | |
119 | ||
120 | DESCRIPTION | |
121 | ||
f822c95b | 122 | Global variable GDB_SYSROOT is used as a prefix directory |
e4f7b8c8 MS |
123 | to search for shared libraries if they have an absolute path. |
124 | ||
125 | Global variable SOLIB_SEARCH_PATH is used as a prefix directory | |
126 | (or set of directories, as in LD_LIBRARY_PATH) to search for all | |
f822c95b | 127 | shared libraries if not found in GDB_SYSROOT. |
e4f7b8c8 | 128 | |
c8c18e65 | 129 | Search algorithm: |
f822c95b DJ |
130 | * If there is a gdb_sysroot and path is absolute: |
131 | * Search for gdb_sysroot/path. | |
c8c18e65 KW |
132 | * else |
133 | * Look for it literally (unmodified). | |
e4f7b8c8 | 134 | * Look in SOLIB_SEARCH_PATH. |
f43caff8 | 135 | * If available, use target defined search function. |
f822c95b | 136 | * If gdb_sysroot is NOT set, perform the following two searches: |
c8c18e65 KW |
137 | * Look in inferior's $PATH. |
138 | * Look in inferior's $LD_LIBRARY_PATH. | |
139 | * | |
140 | * The last check avoids doing this search when targetting remote | |
f822c95b | 141 | * machines since gdb_sysroot will almost always be set. |
e4f7b8c8 MS |
142 | |
143 | RETURNS | |
b21f0843 | 144 | |
e4f7b8c8 MS |
145 | file handle for opened solib, or -1 for failure. */ |
146 | ||
147 | int | |
148 | solib_open (char *in_pathname, char **found_pathname) | |
149 | { | |
66aba65d | 150 | struct target_so_ops *ops = solib_ops (current_gdbarch); |
e4f7b8c8 MS |
151 | int found_file = -1; |
152 | char *temp_pathname = NULL; | |
fe4e3eb8 | 153 | char *p = in_pathname; |
f822c95b | 154 | int gdb_sysroot_is_empty; |
58dc52c3 | 155 | |
f822c95b | 156 | gdb_sysroot_is_empty = (gdb_sysroot == NULL || *gdb_sysroot == 0); |
e4f7b8c8 | 157 | |
f822c95b | 158 | if (! IS_ABSOLUTE_PATH (in_pathname) || gdb_sysroot_is_empty) |
f1d10cfb AS |
159 | temp_pathname = in_pathname; |
160 | else | |
e4f7b8c8 | 161 | { |
f822c95b | 162 | int prefix_len = strlen (gdb_sysroot); |
f1d10cfb AS |
163 | |
164 | /* Remove trailing slashes from absolute prefix. */ | |
165 | while (prefix_len > 0 | |
f822c95b | 166 | && IS_DIR_SEPARATOR (gdb_sysroot[prefix_len - 1])) |
f1d10cfb AS |
167 | prefix_len--; |
168 | ||
169 | /* Cat the prefixed pathname together. */ | |
170 | temp_pathname = alloca (prefix_len + strlen (in_pathname) + 1); | |
f822c95b | 171 | strncpy (temp_pathname, gdb_sysroot, prefix_len); |
f1d10cfb AS |
172 | temp_pathname[prefix_len] = '\0'; |
173 | strcat (temp_pathname, in_pathname); | |
e4f7b8c8 MS |
174 | } |
175 | ||
f1d10cfb AS |
176 | /* Now see if we can open it. */ |
177 | found_file = open (temp_pathname, O_RDONLY | O_BINARY, 0); | |
178 | ||
0997b535 MS |
179 | /* We try to find the library in various ways. After each attempt |
180 | (except for the one above), either found_file >= 0 and | |
181 | temp_pathname is a malloc'd string, or found_file < 0 and | |
182 | temp_pathname does not point to storage that needs to be | |
183 | freed. */ | |
184 | ||
185 | if (found_file < 0) | |
186 | temp_pathname = NULL; | |
187 | else | |
188 | temp_pathname = xstrdup (temp_pathname); | |
189 | ||
f822c95b | 190 | /* If the search in gdb_sysroot failed, and the path name is |
ba5f0d88 OF |
191 | absolute at this point, make it relative. (openp will try and open the |
192 | file according to its absolute path otherwise, which is not what we want.) | |
193 | Affects subsequent searches for this solib. */ | |
194 | if (found_file < 0 && IS_ABSOLUTE_PATH (in_pathname)) | |
195 | { | |
196 | /* First, get rid of any drive letters etc. */ | |
197 | while (!IS_DIR_SEPARATOR (*in_pathname)) | |
198 | in_pathname++; | |
199 | ||
200 | /* Next, get rid of all leading dir separators. */ | |
201 | while (IS_DIR_SEPARATOR (*in_pathname)) | |
202 | in_pathname++; | |
203 | } | |
204 | ||
c8c18e65 | 205 | /* If not found, search the solib_search_path (if any). */ |
e4f7b8c8 | 206 | if (found_file < 0 && solib_search_path != NULL) |
014d698b | 207 | found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST, |
637d6690 | 208 | in_pathname, O_RDONLY | O_BINARY, 0, &temp_pathname); |
ba5f0d88 OF |
209 | |
210 | /* If not found, next search the solib_search_path (if any) for the basename | |
211 | only (ignoring the path). This is to allow reading solibs from a path | |
212 | that differs from the opened path. */ | |
213 | if (found_file < 0 && solib_search_path != NULL) | |
014d698b | 214 | found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST, |
637d6690 | 215 | lbasename (in_pathname), O_RDONLY | O_BINARY, 0, |
ba5f0d88 | 216 | &temp_pathname); |
e4f7b8c8 | 217 | |
2610b0bf | 218 | /* If not found, try to use target supplied solib search method */ |
66aba65d | 219 | if (found_file < 0 && ops->find_and_open_solib) |
637d6690 | 220 | found_file = ops->find_and_open_solib (in_pathname, O_RDONLY | O_BINARY, |
66aba65d | 221 | &temp_pathname); |
2610b0bf | 222 | |
e4f7b8c8 | 223 | /* If not found, next search the inferior's $PATH environment variable. */ |
f822c95b | 224 | if (found_file < 0 && gdb_sysroot_is_empty) |
e4f7b8c8 | 225 | found_file = openp (get_in_environ (inferior_environ, "PATH"), |
637d6690 | 226 | OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY, 0, |
014d698b | 227 | &temp_pathname); |
e4f7b8c8 MS |
228 | |
229 | /* If not found, next search the inferior's $LD_LIBRARY_PATH | |
230 | environment variable. */ | |
f822c95b | 231 | if (found_file < 0 && gdb_sysroot_is_empty) |
e4f7b8c8 | 232 | found_file = openp (get_in_environ (inferior_environ, "LD_LIBRARY_PATH"), |
637d6690 | 233 | OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY, 0, |
014d698b | 234 | &temp_pathname); |
e4f7b8c8 MS |
235 | |
236 | /* Done. If not found, tough luck. Return found_file and | |
237 | (optionally) found_pathname. */ | |
0997b535 MS |
238 | if (temp_pathname) |
239 | { | |
240 | if (found_pathname != NULL) | |
241 | *found_pathname = temp_pathname; | |
242 | else | |
243 | xfree (temp_pathname); | |
244 | } | |
e4f7b8c8 MS |
245 | return found_file; |
246 | } | |
247 | ||
248 | ||
c906108c SS |
249 | /* |
250 | ||
c5aa993b | 251 | LOCAL FUNCTION |
c906108c | 252 | |
c5aa993b | 253 | solib_map_sections -- open bfd and build sections for shared lib |
c906108c | 254 | |
c5aa993b | 255 | SYNOPSIS |
c906108c | 256 | |
c5aa993b | 257 | static int solib_map_sections (struct so_list *so) |
c906108c | 258 | |
c5aa993b | 259 | DESCRIPTION |
c906108c | 260 | |
c5aa993b JM |
261 | Given a pointer to one of the shared objects in our list |
262 | of mapped objects, use the recorded name to open a bfd | |
263 | descriptor for the object, build a section table, and then | |
264 | relocate all the section addresses by the base address at | |
265 | which the shared object was mapped. | |
c906108c | 266 | |
c5aa993b | 267 | FIXMES |
c906108c | 268 | |
c5aa993b JM |
269 | In most (all?) cases the shared object file name recorded in the |
270 | dynamic linkage tables will be a fully qualified pathname. For | |
271 | cases where it isn't, do we really mimic the systems search | |
272 | mechanism correctly in the below code (particularly the tilde | |
273 | expansion stuff?). | |
c906108c SS |
274 | */ |
275 | ||
276 | static int | |
4efb68b1 | 277 | solib_map_sections (void *arg) |
c906108c SS |
278 | { |
279 | struct so_list *so = (struct so_list *) arg; /* catch_errors bogon */ | |
280 | char *filename; | |
281 | char *scratch_pathname; | |
282 | int scratch_chan; | |
283 | struct section_table *p; | |
284 | struct cleanup *old_chain; | |
285 | bfd *abfd; | |
c5aa993b JM |
286 | |
287 | filename = tilde_expand (so->so_name); | |
288 | ||
b8c9b27d | 289 | old_chain = make_cleanup (xfree, filename); |
e4f7b8c8 | 290 | scratch_chan = solib_open (filename, &scratch_pathname); |
c906108c | 291 | |
c906108c SS |
292 | if (scratch_chan < 0) |
293 | { | |
13437d4b KB |
294 | perror_with_name (filename); |
295 | } | |
104c1213 | 296 | |
e4f7b8c8 | 297 | /* Leave scratch_pathname allocated. abfd->name will point to it. */ |
9f76c2cd | 298 | abfd = bfd_fopen (scratch_pathname, gnutarget, FOPEN_RB, scratch_chan); |
13437d4b | 299 | if (!abfd) |
23e04971 | 300 | { |
13437d4b | 301 | close (scratch_chan); |
8a3fe4f8 | 302 | error (_("Could not open `%s' as an executable file: %s"), |
13437d4b KB |
303 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
304 | } | |
e4f7b8c8 | 305 | |
13437d4b KB |
306 | /* Leave bfd open, core_xfer_memory and "info files" need it. */ |
307 | so->abfd = abfd; | |
549c1eea | 308 | bfd_set_cacheable (abfd, 1); |
23e04971 | 309 | |
e4f7b8c8 MS |
310 | /* copy full path name into so_name, so that later symbol_file_add |
311 | can find it */ | |
13437d4b | 312 | if (strlen (scratch_pathname) >= SO_NAME_MAX_PATH_SIZE) |
8a3fe4f8 | 313 | error (_("Full path name length of shared library exceeds SO_NAME_MAX_PATH_SIZE in so_list structure.")); |
13437d4b | 314 | strcpy (so->so_name, scratch_pathname); |
23e04971 | 315 | |
13437d4b KB |
316 | if (!bfd_check_format (abfd, bfd_object)) |
317 | { | |
8a3fe4f8 | 318 | error (_("\"%s\": not in executable format: %s."), |
13437d4b | 319 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
23e04971 | 320 | } |
13437d4b | 321 | if (build_section_table (abfd, &so->sections, &so->sections_end)) |
23e04971 | 322 | { |
8a3fe4f8 | 323 | error (_("Can't find the file sections in `%s': %s"), |
13437d4b | 324 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
23e04971 | 325 | } |
104c1213 | 326 | |
13437d4b | 327 | for (p = so->sections; p < so->sections_end; p++) |
104c1213 | 328 | { |
66aba65d MK |
329 | struct target_so_ops *ops = solib_ops (current_gdbarch); |
330 | ||
13437d4b KB |
331 | /* Relocate the section binding addresses as recorded in the shared |
332 | object's file by the base address to which the object was actually | |
333 | mapped. */ | |
66aba65d | 334 | ops->relocate_section_addresses (so, p); |
cfa9d6d9 DJ |
335 | |
336 | /* If the target didn't provide information about the address | |
337 | range of the shared object, assume we want the location of | |
338 | the .text section. */ | |
339 | if (so->addr_low == 0 && so->addr_high == 0 | |
340 | && strcmp (p->the_bfd_section->name, ".text") == 0) | |
13437d4b | 341 | { |
cfa9d6d9 DJ |
342 | so->addr_low = p->addr; |
343 | so->addr_high = p->endaddr; | |
13437d4b | 344 | } |
104c1213 JM |
345 | } |
346 | ||
13437d4b KB |
347 | /* Free the file names, close the file now. */ |
348 | do_cleanups (old_chain); | |
104c1213 | 349 | |
13437d4b | 350 | return (1); |
104c1213 | 351 | } |
c906108c | 352 | |
07cd4b97 | 353 | /* LOCAL FUNCTION |
c906108c | 354 | |
07cd4b97 | 355 | free_so --- free a `struct so_list' object |
c906108c | 356 | |
c5aa993b | 357 | SYNOPSIS |
c906108c | 358 | |
07cd4b97 | 359 | void free_so (struct so_list *so) |
c906108c | 360 | |
c5aa993b | 361 | DESCRIPTION |
c906108c | 362 | |
07cd4b97 JB |
363 | Free the storage associated with the `struct so_list' object SO. |
364 | If we have opened a BFD for SO, close it. | |
c906108c | 365 | |
07cd4b97 JB |
366 | The caller is responsible for removing SO from whatever list it is |
367 | a member of. If we have placed SO's sections in some target's | |
368 | section table, the caller is responsible for removing them. | |
c906108c | 369 | |
07cd4b97 JB |
370 | This function doesn't mess with objfiles at all. If there is an |
371 | objfile associated with SO that needs to be removed, the caller is | |
372 | responsible for taking care of that. */ | |
373 | ||
13437d4b | 374 | void |
07cd4b97 | 375 | free_so (struct so_list *so) |
c906108c | 376 | { |
66aba65d | 377 | struct target_so_ops *ops = solib_ops (current_gdbarch); |
07cd4b97 | 378 | char *bfd_filename = 0; |
c5aa993b | 379 | |
07cd4b97 | 380 | if (so->sections) |
b8c9b27d | 381 | xfree (so->sections); |
07cd4b97 JB |
382 | |
383 | if (so->abfd) | |
c906108c | 384 | { |
07cd4b97 JB |
385 | bfd_filename = bfd_get_filename (so->abfd); |
386 | if (! bfd_close (so->abfd)) | |
8a3fe4f8 | 387 | warning (_("cannot close \"%s\": %s"), |
07cd4b97 | 388 | bfd_filename, bfd_errmsg (bfd_get_error ())); |
c906108c | 389 | } |
07cd4b97 JB |
390 | |
391 | if (bfd_filename) | |
b8c9b27d | 392 | xfree (bfd_filename); |
07cd4b97 | 393 | |
66aba65d | 394 | ops->free_so (so); |
07cd4b97 | 395 | |
b8c9b27d | 396 | xfree (so); |
c906108c SS |
397 | } |
398 | ||
07cd4b97 | 399 | |
f8766ec1 KB |
400 | /* Return address of first so_list entry in master shared object list. */ |
401 | struct so_list * | |
402 | master_so_list (void) | |
403 | { | |
404 | return so_list_head; | |
405 | } | |
406 | ||
407 | ||
c906108c SS |
408 | /* A small stub to get us past the arg-passing pinhole of catch_errors. */ |
409 | ||
410 | static int | |
4efb68b1 | 411 | symbol_add_stub (void *arg) |
c906108c | 412 | { |
52f0bd74 | 413 | struct so_list *so = (struct so_list *) arg; /* catch_errs bogon */ |
62557bbc | 414 | struct section_addr_info *sap; |
c906108c | 415 | |
07cd4b97 JB |
416 | /* Have we already loaded this shared object? */ |
417 | ALL_OBJFILES (so->objfile) | |
418 | { | |
419 | if (strcmp (so->objfile->name, so->so_name) == 0) | |
420 | return 1; | |
421 | } | |
422 | ||
62557bbc KB |
423 | sap = build_section_addr_info_from_section_table (so->sections, |
424 | so->sections_end); | |
e7cf9df1 | 425 | |
62557bbc KB |
426 | so->objfile = symbol_file_add (so->so_name, so->from_tty, |
427 | sap, 0, OBJF_SHARED); | |
428 | free_section_addr_info (sap); | |
c906108c | 429 | |
07cd4b97 | 430 | return (1); |
c906108c SS |
431 | } |
432 | ||
42a6e6a0 MK |
433 | /* Read in symbols for shared object SO. If FROM_TTY is non-zero, be |
434 | chatty about it. Return non-zero if any symbols were actually | |
435 | loaded. */ | |
436 | ||
437 | int | |
438 | solib_read_symbols (struct so_list *so, int from_tty) | |
439 | { | |
440 | if (so->symbols_loaded) | |
441 | { | |
442 | if (from_tty) | |
a3f17187 | 443 | printf_unfiltered (_("Symbols already loaded for %s\n"), so->so_name); |
42a6e6a0 | 444 | } |
8bb75286 DJ |
445 | else if (so->abfd == NULL) |
446 | { | |
447 | if (from_tty) | |
448 | printf_unfiltered (_("Symbol file not found for %s\n"), so->so_name); | |
449 | } | |
42a6e6a0 MK |
450 | else |
451 | { | |
452 | if (catch_errors (symbol_add_stub, so, | |
453 | "Error while reading shared library symbols:\n", | |
454 | RETURN_MASK_ALL)) | |
455 | { | |
456 | if (from_tty) | |
a3f17187 | 457 | printf_unfiltered (_("Loaded symbols for %s\n"), so->so_name); |
42a6e6a0 MK |
458 | so->symbols_loaded = 1; |
459 | return 1; | |
460 | } | |
461 | } | |
462 | ||
463 | return 0; | |
464 | } | |
c906108c | 465 | |
07cd4b97 | 466 | /* LOCAL FUNCTION |
c906108c | 467 | |
105b175f | 468 | update_solib_list --- synchronize GDB's shared object list with inferior's |
c906108c | 469 | |
c5aa993b | 470 | SYNOPSIS |
c906108c | 471 | |
105b175f | 472 | void update_solib_list (int from_tty, struct target_ops *TARGET) |
c906108c | 473 | |
07cd4b97 | 474 | Extract the list of currently loaded shared objects from the |
105b175f JB |
475 | inferior, and compare it with the list of shared objects currently |
476 | in GDB's so_list_head list. Edit so_list_head to bring it in sync | |
477 | with the inferior's new list. | |
c906108c | 478 | |
105b175f JB |
479 | If we notice that the inferior has unloaded some shared objects, |
480 | free any symbolic info GDB had read about those shared objects. | |
481 | ||
482 | Don't load symbolic info for any new shared objects; just add them | |
483 | to the list, and leave their symbols_loaded flag clear. | |
07cd4b97 JB |
484 | |
485 | If FROM_TTY is non-null, feel free to print messages about what | |
486 | we're doing. | |
c906108c | 487 | |
07cd4b97 JB |
488 | If TARGET is non-null, add the sections of all new shared objects |
489 | to TARGET's section table. Note that this doesn't remove any | |
490 | sections for shared objects that have been unloaded, and it | |
491 | doesn't check to see if the new shared objects are already present in | |
492 | the section table. But we only use this for core files and | |
493 | processes we've just attached to, so that's okay. */ | |
c906108c | 494 | |
a78f21af | 495 | static void |
105b175f | 496 | update_solib_list (int from_tty, struct target_ops *target) |
07cd4b97 | 497 | { |
66aba65d MK |
498 | struct target_so_ops *ops = solib_ops (current_gdbarch); |
499 | struct so_list *inferior = ops->current_sos(); | |
07cd4b97 JB |
500 | struct so_list *gdb, **gdb_link; |
501 | ||
104c1213 JM |
502 | /* If we are attaching to a running process for which we |
503 | have not opened a symbol file, we may be able to get its | |
504 | symbols now! */ | |
505 | if (attach_flag && | |
506 | symfile_objfile == NULL) | |
66aba65d | 507 | catch_errors (ops->open_symbol_file_object, &from_tty, |
104c1213 JM |
508 | "Error reading attached process's symbol file.\n", |
509 | RETURN_MASK_ALL); | |
510 | ||
07cd4b97 JB |
511 | /* Since this function might actually add some elements to the |
512 | so_list_head list, arrange for it to be cleaned up when | |
513 | appropriate. */ | |
514 | if (!solib_cleanup_queued) | |
515 | { | |
516 | make_run_cleanup (do_clear_solib, NULL); | |
517 | solib_cleanup_queued = 1; | |
c906108c | 518 | } |
c5aa993b | 519 | |
07cd4b97 JB |
520 | /* GDB and the inferior's dynamic linker each maintain their own |
521 | list of currently loaded shared objects; we want to bring the | |
522 | former in sync with the latter. Scan both lists, seeing which | |
523 | shared objects appear where. There are three cases: | |
524 | ||
525 | - A shared object appears on both lists. This means that GDB | |
105b175f JB |
526 | knows about it already, and it's still loaded in the inferior. |
527 | Nothing needs to happen. | |
07cd4b97 JB |
528 | |
529 | - A shared object appears only on GDB's list. This means that | |
105b175f JB |
530 | the inferior has unloaded it. We should remove the shared |
531 | object from GDB's tables. | |
07cd4b97 JB |
532 | |
533 | - A shared object appears only on the inferior's list. This | |
105b175f JB |
534 | means that it's just been loaded. We should add it to GDB's |
535 | tables. | |
07cd4b97 JB |
536 | |
537 | So we walk GDB's list, checking each entry to see if it appears | |
538 | in the inferior's list too. If it does, no action is needed, and | |
539 | we remove it from the inferior's list. If it doesn't, the | |
540 | inferior has unloaded it, and we remove it from GDB's list. By | |
541 | the time we're done walking GDB's list, the inferior's list | |
542 | contains only the new shared objects, which we then add. */ | |
543 | ||
544 | gdb = so_list_head; | |
545 | gdb_link = &so_list_head; | |
546 | while (gdb) | |
c906108c | 547 | { |
07cd4b97 JB |
548 | struct so_list *i = inferior; |
549 | struct so_list **i_link = &inferior; | |
550 | ||
551 | /* Check to see whether the shared object *gdb also appears in | |
552 | the inferior's current list. */ | |
553 | while (i) | |
c906108c | 554 | { |
07cd4b97 JB |
555 | if (! strcmp (gdb->so_original_name, i->so_original_name)) |
556 | break; | |
557 | ||
558 | i_link = &i->next; | |
559 | i = *i_link; | |
c906108c | 560 | } |
c5aa993b | 561 | |
07cd4b97 JB |
562 | /* If the shared object appears on the inferior's list too, then |
563 | it's still loaded, so we don't need to do anything. Delete | |
564 | it from the inferior's list, and leave it on GDB's list. */ | |
565 | if (i) | |
c906108c | 566 | { |
07cd4b97 | 567 | *i_link = i->next; |
07cd4b97 JB |
568 | free_so (i); |
569 | gdb_link = &gdb->next; | |
570 | gdb = *gdb_link; | |
571 | } | |
572 | ||
573 | /* If it's not on the inferior's list, remove it from GDB's tables. */ | |
574 | else | |
575 | { | |
42a6e6a0 MK |
576 | /* Notify any observer that the shared object has been |
577 | unloaded before we remove it from GDB's tables. */ | |
84acb35a JJ |
578 | observer_notify_solib_unloaded (gdb); |
579 | ||
07cd4b97 | 580 | *gdb_link = gdb->next; |
07cd4b97 JB |
581 | |
582 | /* Unless the user loaded it explicitly, free SO's objfile. */ | |
e8930304 | 583 | if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED)) |
07cd4b97 JB |
584 | free_objfile (gdb->objfile); |
585 | ||
586 | /* Some targets' section tables might be referring to | |
587 | sections from so->abfd; remove them. */ | |
588 | remove_target_sections (gdb->abfd); | |
589 | ||
590 | free_so (gdb); | |
591 | gdb = *gdb_link; | |
c906108c SS |
592 | } |
593 | } | |
c5aa993b | 594 | |
07cd4b97 JB |
595 | /* Now the inferior's list contains only shared objects that don't |
596 | appear in GDB's list --- those that are newly loaded. Add them | |
e8930304 | 597 | to GDB's shared object list. */ |
07cd4b97 | 598 | if (inferior) |
c906108c | 599 | { |
07cd4b97 JB |
600 | struct so_list *i; |
601 | ||
602 | /* Add the new shared objects to GDB's list. */ | |
603 | *gdb_link = inferior; | |
604 | ||
e8930304 | 605 | /* Fill in the rest of each of the `struct so_list' nodes. */ |
07cd4b97 | 606 | for (i = inferior; i; i = i->next) |
c906108c | 607 | { |
07cd4b97 JB |
608 | i->from_tty = from_tty; |
609 | ||
610 | /* Fill in the rest of the `struct so_list' node. */ | |
611 | catch_errors (solib_map_sections, i, | |
612 | "Error while mapping shared library sections:\n", | |
613 | RETURN_MASK_ALL); | |
07cd4b97 | 614 | |
b41be06e ND |
615 | /* If requested, add the shared object's sections to the TARGET's |
616 | section table. Do this immediately after mapping the object so | |
617 | that later nodes in the list can query this object, as is needed | |
618 | in solib-osf.c. */ | |
619 | if (target) | |
c906108c | 620 | { |
b41be06e ND |
621 | int count = (i->sections_end - i->sections); |
622 | if (count > 0) | |
07cd4b97 | 623 | { |
b41be06e | 624 | int space = target_resize_to_sections (target, count); |
07cd4b97 JB |
625 | memcpy (target->to_sections + space, |
626 | i->sections, | |
627 | count * sizeof (i->sections[0])); | |
07cd4b97 | 628 | } |
c906108c | 629 | } |
42a6e6a0 MK |
630 | |
631 | /* Notify any observer that the shared object has been | |
632 | loaded now that we've added it to GDB's tables. */ | |
633 | observer_notify_solib_loaded (i); | |
c906108c | 634 | } |
e8930304 | 635 | } |
105b175f JB |
636 | } |
637 | ||
6612ad7f JB |
638 | /* Return non-zero if SO is the libpthread shared library. |
639 | ||
640 | Uses a fairly simplistic heuristic approach where we check | |
641 | the file name against "/libpthread". This can lead to false | |
642 | positives, but this should be good enough in practice. */ | |
643 | ||
644 | static int | |
645 | libpthread_solib_p (struct so_list *so) | |
646 | { | |
647 | return (strstr (so->so_name, "/libpthread") != NULL); | |
648 | } | |
105b175f JB |
649 | |
650 | /* GLOBAL FUNCTION | |
651 | ||
652 | solib_add -- read in symbol info for newly added shared libraries | |
653 | ||
654 | SYNOPSIS | |
655 | ||
990f9fe3 FF |
656 | void solib_add (char *pattern, int from_tty, struct target_ops |
657 | *TARGET, int readsyms) | |
105b175f JB |
658 | |
659 | DESCRIPTION | |
660 | ||
661 | Read in symbolic information for any shared objects whose names | |
662 | match PATTERN. (If we've already read a shared object's symbol | |
663 | info, leave it alone.) If PATTERN is zero, read them all. | |
664 | ||
990f9fe3 FF |
665 | If READSYMS is 0, defer reading symbolic information until later |
666 | but still do any needed low level processing. | |
667 | ||
105b175f JB |
668 | FROM_TTY and TARGET are as described for update_solib_list, above. */ |
669 | ||
670 | void | |
990f9fe3 | 671 | solib_add (char *pattern, int from_tty, struct target_ops *target, int readsyms) |
105b175f JB |
672 | { |
673 | struct so_list *gdb; | |
674 | ||
675 | if (pattern) | |
676 | { | |
677 | char *re_err = re_comp (pattern); | |
678 | ||
679 | if (re_err) | |
8a3fe4f8 | 680 | error (_("Invalid regexp: %s"), re_err); |
105b175f JB |
681 | } |
682 | ||
683 | update_solib_list (from_tty, target); | |
c906108c | 684 | |
105b175f JB |
685 | /* Walk the list of currently loaded shared libraries, and read |
686 | symbols for any that match the pattern --- or any whose symbols | |
687 | aren't already loaded, if no pattern was given. */ | |
e8930304 JB |
688 | { |
689 | int any_matches = 0; | |
690 | int loaded_any_symbols = 0; | |
c906108c | 691 | |
e8930304 JB |
692 | for (gdb = so_list_head; gdb; gdb = gdb->next) |
693 | if (! pattern || re_exec (gdb->so_name)) | |
694 | { | |
6612ad7f JB |
695 | /* Normally, we would read the symbols from that library |
696 | only if READSYMS is set. However, we're making a small | |
697 | exception for the pthread library, because we sometimes | |
698 | need the library symbols to be loaded in order to provide | |
699 | thread support (x86-linux for instance). */ | |
700 | const int add_this_solib = | |
701 | (readsyms || libpthread_solib_p (gdb)); | |
702 | ||
e8930304 | 703 | any_matches = 1; |
6612ad7f | 704 | if (add_this_solib && solib_read_symbols (gdb, from_tty)) |
42a6e6a0 | 705 | loaded_any_symbols = 1; |
e8930304 JB |
706 | } |
707 | ||
708 | if (from_tty && pattern && ! any_matches) | |
709 | printf_unfiltered | |
710 | ("No loaded shared libraries match the pattern `%s'.\n", pattern); | |
711 | ||
712 | if (loaded_any_symbols) | |
713 | { | |
66aba65d MK |
714 | struct target_so_ops *ops = solib_ops (current_gdbarch); |
715 | ||
e8930304 JB |
716 | /* Getting new symbols may change our opinion about what is |
717 | frameless. */ | |
718 | reinit_frame_cache (); | |
719 | ||
66aba65d | 720 | ops->special_symbol_handling (); |
e8930304 JB |
721 | } |
722 | } | |
c906108c SS |
723 | } |
724 | ||
07cd4b97 | 725 | |
c906108c SS |
726 | /* |
727 | ||
c5aa993b | 728 | LOCAL FUNCTION |
c906108c | 729 | |
c5aa993b | 730 | info_sharedlibrary_command -- code for "info sharedlibrary" |
c906108c | 731 | |
c5aa993b | 732 | SYNOPSIS |
c906108c | 733 | |
c5aa993b | 734 | static void info_sharedlibrary_command () |
c906108c | 735 | |
c5aa993b | 736 | DESCRIPTION |
c906108c | 737 | |
c5aa993b JM |
738 | Walk through the shared library list and print information |
739 | about each attached library. | |
740 | */ | |
c906108c SS |
741 | |
742 | static void | |
fba45db2 | 743 | info_sharedlibrary_command (char *ignore, int from_tty) |
c906108c | 744 | { |
52f0bd74 | 745 | struct so_list *so = NULL; /* link map state variable */ |
c906108c SS |
746 | int header_done = 0; |
747 | int addr_width; | |
c906108c | 748 | |
84eb3c4f | 749 | /* "0x", a little whitespace, and two hex digits per byte of pointers. */ |
819844ad | 750 | addr_width = 4 + (gdbarch_ptr_bit (current_gdbarch) / 4); |
c906108c | 751 | |
105b175f | 752 | update_solib_list (from_tty, 0); |
07cd4b97 JB |
753 | |
754 | for (so = so_list_head; so; so = so->next) | |
c906108c | 755 | { |
c5aa993b | 756 | if (so->so_name[0]) |
c906108c SS |
757 | { |
758 | if (!header_done) | |
759 | { | |
c5aa993b JM |
760 | printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width, "From", |
761 | addr_width, "To", "Syms Read", | |
762 | "Shared Object Library"); | |
c906108c SS |
763 | header_done++; |
764 | } | |
765 | ||
766 | printf_unfiltered ("%-*s", addr_width, | |
cfa9d6d9 | 767 | so->addr_high != 0 |
bb599908 | 768 | ? hex_string_custom ( |
cfa9d6d9 | 769 | (LONGEST) so->addr_low, |
bb599908 | 770 | addr_width - 4) |
749499cb | 771 | : ""); |
c906108c | 772 | printf_unfiltered ("%-*s", addr_width, |
cfa9d6d9 | 773 | so->addr_high != 0 |
bb599908 | 774 | ? hex_string_custom ( |
cfa9d6d9 | 775 | (LONGEST) so->addr_high, |
bb599908 | 776 | addr_width - 4) |
749499cb | 777 | : ""); |
c5aa993b JM |
778 | printf_unfiltered ("%-12s", so->symbols_loaded ? "Yes" : "No"); |
779 | printf_unfiltered ("%s\n", so->so_name); | |
c906108c SS |
780 | } |
781 | } | |
782 | if (so_list_head == NULL) | |
783 | { | |
a3f17187 | 784 | printf_unfiltered (_("No shared libraries loaded at this time.\n")); |
c906108c SS |
785 | } |
786 | } | |
787 | ||
788 | /* | |
789 | ||
c5aa993b | 790 | GLOBAL FUNCTION |
c906108c | 791 | |
c5aa993b | 792 | solib_address -- check to see if an address is in a shared lib |
c906108c | 793 | |
c5aa993b | 794 | SYNOPSIS |
c906108c | 795 | |
c5aa993b | 796 | char * solib_address (CORE_ADDR address) |
c906108c | 797 | |
c5aa993b | 798 | DESCRIPTION |
c906108c | 799 | |
c5aa993b JM |
800 | Provides a hook for other gdb routines to discover whether or |
801 | not a particular address is within the mapped address space of | |
749499cb | 802 | a shared library. |
c906108c | 803 | |
c5aa993b JM |
804 | For example, this routine is called at one point to disable |
805 | breakpoints which are in shared libraries that are not currently | |
806 | mapped in. | |
c906108c SS |
807 | */ |
808 | ||
809 | char * | |
fba45db2 | 810 | solib_address (CORE_ADDR address) |
c906108c | 811 | { |
52f0bd74 | 812 | struct so_list *so = 0; /* link map state variable */ |
c5aa993b | 813 | |
07cd4b97 | 814 | for (so = so_list_head; so; so = so->next) |
c906108c | 815 | { |
749499cb KB |
816 | struct section_table *p; |
817 | ||
818 | for (p = so->sections; p < so->sections_end; p++) | |
819 | { | |
820 | if (p->addr <= address && address < p->endaddr) | |
821 | return (so->so_name); | |
822 | } | |
c906108c | 823 | } |
07cd4b97 | 824 | |
c906108c SS |
825 | return (0); |
826 | } | |
827 | ||
828 | /* Called by free_all_symtabs */ | |
829 | ||
c5aa993b | 830 | void |
fba45db2 | 831 | clear_solib (void) |
c906108c | 832 | { |
66aba65d MK |
833 | struct target_so_ops *ops = solib_ops (current_gdbarch); |
834 | ||
085dd6e6 JM |
835 | /* This function is expected to handle ELF shared libraries. It is |
836 | also used on Solaris, which can run either ELF or a.out binaries | |
837 | (for compatibility with SunOS 4), both of which can use shared | |
838 | libraries. So we don't know whether we have an ELF executable or | |
839 | an a.out executable until the user chooses an executable file. | |
840 | ||
841 | ELF shared libraries don't get mapped into the address space | |
842 | until after the program starts, so we'd better not try to insert | |
843 | breakpoints in them immediately. We have to wait until the | |
844 | dynamic linker has loaded them; we'll hit a bp_shlib_event | |
845 | breakpoint (look for calls to create_solib_event_breakpoint) when | |
846 | it's ready. | |
847 | ||
848 | SunOS shared libraries seem to be different --- they're present | |
849 | as soon as the process begins execution, so there's no need to | |
850 | put off inserting breakpoints. There's also nowhere to put a | |
851 | bp_shlib_event breakpoint, so if we put it off, we'll never get | |
852 | around to it. | |
853 | ||
854 | So: disable breakpoints only if we're using ELF shared libs. */ | |
855 | if (exec_bfd != NULL | |
856 | && bfd_get_flavour (exec_bfd) != bfd_target_aout_flavour) | |
cb851954 | 857 | disable_breakpoints_in_shlibs (); |
085dd6e6 | 858 | |
c906108c SS |
859 | while (so_list_head) |
860 | { | |
07cd4b97 JB |
861 | struct so_list *so = so_list_head; |
862 | so_list_head = so->next; | |
2069d78d KB |
863 | if (so->abfd) |
864 | remove_target_sections (so->abfd); | |
07cd4b97 | 865 | free_so (so); |
c906108c | 866 | } |
07cd4b97 | 867 | |
66aba65d | 868 | ops->clear_solib (); |
c906108c SS |
869 | } |
870 | ||
871 | static void | |
4efb68b1 | 872 | do_clear_solib (void *dummy) |
c906108c SS |
873 | { |
874 | solib_cleanup_queued = 0; | |
875 | clear_solib (); | |
876 | } | |
877 | ||
13437d4b | 878 | /* GLOBAL FUNCTION |
c5aa993b JM |
879 | |
880 | solib_create_inferior_hook -- shared library startup support | |
881 | ||
882 | SYNOPSIS | |
883 | ||
7095b863 | 884 | void solib_create_inferior_hook () |
c5aa993b JM |
885 | |
886 | DESCRIPTION | |
887 | ||
888 | When gdb starts up the inferior, it nurses it along (through the | |
889 | shell) until it is ready to execute it's first instruction. At this | |
890 | point, this function gets called via expansion of the macro | |
13437d4b | 891 | SOLIB_CREATE_INFERIOR_HOOK. */ |
c5aa993b JM |
892 | |
893 | void | |
fba45db2 | 894 | solib_create_inferior_hook (void) |
c906108c | 895 | { |
66aba65d MK |
896 | struct target_so_ops *ops = solib_ops (current_gdbarch); |
897 | ops->solib_create_inferior_hook(); | |
c906108c SS |
898 | } |
899 | ||
d7fa2ae2 KB |
900 | /* GLOBAL FUNCTION |
901 | ||
902 | in_solib_dynsym_resolve_code -- check to see if an address is in | |
903 | dynamic loader's dynamic symbol | |
904 | resolution code | |
905 | ||
906 | SYNOPSIS | |
907 | ||
908 | int in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
909 | ||
910 | DESCRIPTION | |
911 | ||
912 | Determine if PC is in the dynamic linker's symbol resolution | |
913 | code. Return 1 if so, 0 otherwise. | |
914 | */ | |
915 | ||
916 | int | |
917 | in_solib_dynsym_resolve_code (CORE_ADDR pc) | |
918 | { | |
66aba65d MK |
919 | struct target_so_ops *ops = solib_ops (current_gdbarch); |
920 | return ops->in_dynsym_resolve_code (pc); | |
d7fa2ae2 | 921 | } |
c906108c SS |
922 | |
923 | /* | |
924 | ||
c5aa993b | 925 | LOCAL FUNCTION |
c906108c | 926 | |
c5aa993b | 927 | sharedlibrary_command -- handle command to explicitly add library |
c906108c | 928 | |
c5aa993b | 929 | SYNOPSIS |
c906108c | 930 | |
c5aa993b | 931 | static void sharedlibrary_command (char *args, int from_tty) |
c906108c | 932 | |
c5aa993b | 933 | DESCRIPTION |
c906108c | 934 | |
c5aa993b | 935 | */ |
c906108c SS |
936 | |
937 | static void | |
fba45db2 | 938 | sharedlibrary_command (char *args, int from_tty) |
c906108c SS |
939 | { |
940 | dont_repeat (); | |
990f9fe3 | 941 | solib_add (args, from_tty, (struct target_ops *) 0, 1); |
c906108c SS |
942 | } |
943 | ||
cb0ba49e MS |
944 | /* LOCAL FUNCTION |
945 | ||
946 | no_shared_libraries -- handle command to explicitly discard symbols | |
947 | from shared libraries. | |
948 | ||
949 | DESCRIPTION | |
950 | ||
951 | Implements the command "nosharedlibrary", which discards symbols | |
952 | that have been auto-loaded from shared libraries. Symbols from | |
953 | shared libraries that were added by explicit request of the user | |
954 | are not discarded. Also called from remote.c. */ | |
955 | ||
c60a7562 MS |
956 | void |
957 | no_shared_libraries (char *ignored, int from_tty) | |
958 | { | |
959 | objfile_purge_solibs (); | |
960 | do_clear_solib (NULL); | |
961 | } | |
c906108c | 962 | |
cf466558 | 963 | static void |
f397e303 AC |
964 | reload_shared_libraries (char *ignored, int from_tty, |
965 | struct cmd_list_element *e) | |
cf466558 KB |
966 | { |
967 | no_shared_libraries (NULL, from_tty); | |
968 | solib_add (NULL, from_tty, NULL, auto_solib_add); | |
969 | } | |
970 | ||
920d2a44 AC |
971 | static void |
972 | show_auto_solib_add (struct ui_file *file, int from_tty, | |
973 | struct cmd_list_element *c, const char *value) | |
974 | { | |
975 | fprintf_filtered (file, _("Autoloading of shared library symbols is %s.\n"), | |
976 | value); | |
977 | } | |
978 | ||
979 | ||
3a40aaa0 UW |
980 | /* Handler for library-specific lookup of global symbol NAME in OBJFILE. Call |
981 | the library-specific handler if it is installed for the current target. */ | |
982 | ||
983 | struct symbol * | |
984 | solib_global_lookup (const struct objfile *objfile, | |
985 | const char *name, | |
986 | const char *linkage_name, | |
987 | const domain_enum domain, | |
988 | struct symtab **symtab) | |
989 | { | |
990 | if (current_target_so_ops->lookup_lib_global_symbol != NULL) | |
991 | return current_target_so_ops->lookup_lib_global_symbol (objfile, | |
992 | name, linkage_name, domain, symtab); | |
993 | ||
994 | return NULL; | |
995 | } | |
996 | ||
997 | ||
a78f21af AC |
998 | extern initialize_file_ftype _initialize_solib; /* -Wmissing-prototypes */ |
999 | ||
c906108c | 1000 | void |
fba45db2 | 1001 | _initialize_solib (void) |
c906108c | 1002 | { |
fa58ee11 EZ |
1003 | struct cmd_list_element *c; |
1004 | ||
66aba65d MK |
1005 | solib_data = gdbarch_data_register_pre_init (solib_init); |
1006 | ||
c906108c | 1007 | add_com ("sharedlibrary", class_files, sharedlibrary_command, |
1bedd215 | 1008 | _("Load shared object library symbols for files matching REGEXP.")); |
c5aa993b | 1009 | add_info ("sharedlibrary", info_sharedlibrary_command, |
1bedd215 | 1010 | _("Status of loaded shared object libraries.")); |
c60a7562 | 1011 | add_com ("nosharedlibrary", class_files, no_shared_libraries, |
1bedd215 | 1012 | _("Unload all shared object library symbols.")); |
c906108c | 1013 | |
5bf193a2 AC |
1014 | add_setshow_boolean_cmd ("auto-solib-add", class_support, |
1015 | &auto_solib_add, _("\ | |
1016 | Set autoloading of shared library symbols."), _("\ | |
1017 | Show autoloading of shared library symbols."), _("\ | |
b7209cb4 FF |
1018 | If \"on\", symbols from all shared object libraries will be loaded\n\ |
1019 | automatically when the inferior begins execution, when the dynamic linker\n\ | |
1020 | informs gdb that a new library has been loaded, or when attaching to the\n\ | |
5bf193a2 AC |
1021 | inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'."), |
1022 | NULL, | |
920d2a44 | 1023 | show_auto_solib_add, |
5bf193a2 | 1024 | &setlist, &showlist); |
c906108c | 1025 | |
f822c95b DJ |
1026 | add_setshow_filename_cmd ("sysroot", class_support, |
1027 | &gdb_sysroot, _("\ | |
1028 | Set an alternate system root."), _("\ | |
1029 | Show the current system root."), _("\ | |
1030 | The system root is used to load absolute shared library symbol files.\n\ | |
1031 | For other (relative) files, you can add directories using\n\ | |
1032 | `set solib-search-path'."), | |
f397e303 AC |
1033 | reload_shared_libraries, |
1034 | NULL, | |
1035 | &setlist, &showlist); | |
c906108c | 1036 | |
f822c95b DJ |
1037 | add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0, |
1038 | &setlist); | |
1039 | add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0, | |
1040 | &showlist); | |
030292b7 | 1041 | |
525226b5 AC |
1042 | add_setshow_optional_filename_cmd ("solib-search-path", class_support, |
1043 | &solib_search_path, _("\ | |
1044 | Set the search path for loading non-absolute shared library symbol files."), _("\ | |
1045 | Show the search path for loading non-absolute shared library symbol files."), _("\ | |
1046 | This takes precedence over the environment variables PATH and LD_LIBRARY_PATH."), | |
1047 | reload_shared_libraries, | |
920d2a44 | 1048 | show_solib_search_path, |
525226b5 | 1049 | &setlist, &showlist); |
c906108c | 1050 | } |