Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
61baf725 | 3 | Copyright (C) 1990-2017 Free Software Foundation, Inc. |
8926118c | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support, using pieces from other GDB modules. |
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. | |
c906108c | 18 | |
c5aa993b | 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 SS |
21 | |
22 | #include "defs.h" | |
e17c207e | 23 | #include "arch-utils.h" |
086df311 | 24 | #include "bfdlink.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "gdbtypes.h" | |
27 | #include "gdbcore.h" | |
28 | #include "frame.h" | |
29 | #include "target.h" | |
30 | #include "value.h" | |
31 | #include "symfile.h" | |
32 | #include "objfiles.h" | |
0378c332 | 33 | #include "source.h" |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "breakpoint.h" | |
36 | #include "language.h" | |
37 | #include "complaints.h" | |
38 | #include "demangle.h" | |
fb14de7b UW |
39 | #include "inferior.h" |
40 | #include "regcache.h" | |
5b5d99cf | 41 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 42 | #include "gdb-stabs.h" |
04ea0df1 | 43 | #include "gdb_obstack.h" |
d75b5104 | 44 | #include "completer.h" |
af5f3db6 | 45 | #include "bcache.h" |
2de7ced7 | 46 | #include "hashtab.h" |
dbda9972 | 47 | #include "readline/readline.h" |
fe898f56 | 48 | #include "block.h" |
ea53e89f | 49 | #include "observer.h" |
c1bd25fd | 50 | #include "exec.h" |
9bdcbae7 | 51 | #include "parser-defs.h" |
8756216b | 52 | #include "varobj.h" |
77069918 | 53 | #include "elf-bfd.h" |
e85a822c | 54 | #include "solib.h" |
f1838a98 | 55 | #include "remote.h" |
1bfeeb0f | 56 | #include "stack.h" |
cbb099e8 | 57 | #include "gdb_bfd.h" |
529480d0 | 58 | #include "cli/cli-utils.h" |
0efef640 | 59 | #include "common/byte-vector.h" |
c906108c | 60 | |
c906108c SS |
61 | #include <sys/types.h> |
62 | #include <fcntl.h> | |
53ce3c39 | 63 | #include <sys/stat.h> |
c906108c | 64 | #include <ctype.h> |
dcb07cfa | 65 | #include <chrono> |
c906108c | 66 | |
ccefe4c4 | 67 | #include "psymtab.h" |
c906108c | 68 | |
3e43a32a MS |
69 | int (*deprecated_ui_load_progress_hook) (const char *section, |
70 | unsigned long num); | |
9a4105ab | 71 | void (*deprecated_show_load_progress) (const char *section, |
5417f6dc RM |
72 | unsigned long section_sent, |
73 | unsigned long section_size, | |
74 | unsigned long total_sent, | |
c2d11a7d | 75 | unsigned long total_size); |
769d7dc4 AC |
76 | void (*deprecated_pre_add_symbol_hook) (const char *); |
77 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 78 | |
74b7792f AC |
79 | static void clear_symtab_users_cleanup (void *ignore); |
80 | ||
c378eb4e MS |
81 | /* Global variables owned by this file. */ |
82 | int readnow_symbol_files; /* Read full symbols immediately. */ | |
c906108c | 83 | |
c378eb4e | 84 | /* Functions this file defines. */ |
c906108c | 85 | |
a14ed312 | 86 | static void load_command (char *, int); |
c906108c | 87 | |
ecf45d2c | 88 | static void symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
b15cc25c | 89 | objfile_flags flags); |
d7db6da9 | 90 | |
00b5771c | 91 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 92 | |
a14ed312 | 93 | static void overlay_invalidate_all (void); |
c906108c | 94 | |
a14ed312 | 95 | static void overlay_command (char *, int); |
c906108c | 96 | |
a14ed312 | 97 | static void simple_free_overlay_table (void); |
c906108c | 98 | |
e17a4113 UW |
99 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
100 | enum bfd_endian); | |
c906108c | 101 | |
a14ed312 | 102 | static int simple_read_overlay_table (void); |
c906108c | 103 | |
a14ed312 | 104 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 105 | |
a14ed312 | 106 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 107 | |
31d99776 DJ |
108 | static void symfile_find_segment_sections (struct objfile *objfile); |
109 | ||
c906108c SS |
110 | /* List of all available sym_fns. On gdb startup, each object file reader |
111 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 112 | prepared to read. */ |
c906108c | 113 | |
905014d7 | 114 | struct registered_sym_fns |
c256e171 | 115 | { |
905014d7 SM |
116 | registered_sym_fns (bfd_flavour sym_flavour_, const struct sym_fns *sym_fns_) |
117 | : sym_flavour (sym_flavour_), sym_fns (sym_fns_) | |
118 | {} | |
119 | ||
c256e171 DE |
120 | /* BFD flavour that we handle. */ |
121 | enum bfd_flavour sym_flavour; | |
122 | ||
123 | /* The "vtable" of symbol functions. */ | |
124 | const struct sym_fns *sym_fns; | |
905014d7 | 125 | }; |
c256e171 | 126 | |
905014d7 | 127 | static std::vector<registered_sym_fns> symtab_fns; |
c906108c | 128 | |
770e7fc7 DE |
129 | /* Values for "set print symbol-loading". */ |
130 | ||
131 | const char print_symbol_loading_off[] = "off"; | |
132 | const char print_symbol_loading_brief[] = "brief"; | |
133 | const char print_symbol_loading_full[] = "full"; | |
134 | static const char *print_symbol_loading_enums[] = | |
135 | { | |
136 | print_symbol_loading_off, | |
137 | print_symbol_loading_brief, | |
138 | print_symbol_loading_full, | |
139 | NULL | |
140 | }; | |
141 | static const char *print_symbol_loading = print_symbol_loading_full; | |
142 | ||
b7209cb4 FF |
143 | /* If non-zero, shared library symbols will be added automatically |
144 | when the inferior is created, new libraries are loaded, or when | |
145 | attaching to the inferior. This is almost always what users will | |
146 | want to have happen; but for very large programs, the startup time | |
147 | will be excessive, and so if this is a problem, the user can clear | |
148 | this flag and then add the shared library symbols as needed. Note | |
149 | that there is a potential for confusion, since if the shared | |
c906108c | 150 | library symbols are not loaded, commands like "info fun" will *not* |
0d14a781 | 151 | report all the functions that are actually present. */ |
c906108c SS |
152 | |
153 | int auto_solib_add = 1; | |
c906108c | 154 | \f |
c5aa993b | 155 | |
770e7fc7 DE |
156 | /* Return non-zero if symbol-loading messages should be printed. |
157 | FROM_TTY is the standard from_tty argument to gdb commands. | |
158 | If EXEC is non-zero the messages are for the executable. | |
159 | Otherwise, messages are for shared libraries. | |
160 | If FULL is non-zero then the caller is printing a detailed message. | |
161 | E.g., the message includes the shared library name. | |
162 | Otherwise, the caller is printing a brief "summary" message. */ | |
163 | ||
164 | int | |
165 | print_symbol_loading_p (int from_tty, int exec, int full) | |
166 | { | |
167 | if (!from_tty && !info_verbose) | |
168 | return 0; | |
169 | ||
170 | if (exec) | |
171 | { | |
172 | /* We don't check FULL for executables, there are few such | |
173 | messages, therefore brief == full. */ | |
174 | return print_symbol_loading != print_symbol_loading_off; | |
175 | } | |
176 | if (full) | |
177 | return print_symbol_loading == print_symbol_loading_full; | |
178 | return print_symbol_loading == print_symbol_loading_brief; | |
179 | } | |
180 | ||
0d14a781 | 181 | /* True if we are reading a symbol table. */ |
c906108c SS |
182 | |
183 | int currently_reading_symtab = 0; | |
184 | ||
ccefe4c4 TT |
185 | /* Increment currently_reading_symtab and return a cleanup that can be |
186 | used to decrement it. */ | |
3b7bacac | 187 | |
c83dd867 | 188 | scoped_restore_tmpl<int> |
ccefe4c4 | 189 | increment_reading_symtab (void) |
c906108c | 190 | { |
c83dd867 TT |
191 | gdb_assert (currently_reading_symtab >= 0); |
192 | return make_scoped_restore (¤tly_reading_symtab, | |
193 | currently_reading_symtab + 1); | |
c906108c SS |
194 | } |
195 | ||
5417f6dc RM |
196 | /* Remember the lowest-addressed loadable section we've seen. |
197 | This function is called via bfd_map_over_sections. | |
c906108c SS |
198 | |
199 | In case of equal vmas, the section with the largest size becomes the | |
200 | lowest-addressed loadable section. | |
201 | ||
202 | If the vmas and sizes are equal, the last section is considered the | |
203 | lowest-addressed loadable section. */ | |
204 | ||
205 | void | |
4efb68b1 | 206 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 207 | { |
c5aa993b | 208 | asection **lowest = (asection **) obj; |
c906108c | 209 | |
eb73e134 | 210 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
211 | return; |
212 | if (!*lowest) | |
213 | *lowest = sect; /* First loadable section */ | |
214 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
215 | *lowest = sect; /* A lower loadable section */ | |
216 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
217 | && (bfd_section_size (abfd, (*lowest)) | |
218 | <= bfd_section_size (abfd, sect))) | |
219 | *lowest = sect; | |
220 | } | |
221 | ||
d76488d8 TT |
222 | /* Create a new section_addr_info, with room for NUM_SECTIONS. The |
223 | new object's 'num_sections' field is set to 0; it must be updated | |
224 | by the caller. */ | |
a39a16c4 MM |
225 | |
226 | struct section_addr_info * | |
227 | alloc_section_addr_info (size_t num_sections) | |
228 | { | |
229 | struct section_addr_info *sap; | |
230 | size_t size; | |
231 | ||
232 | size = (sizeof (struct section_addr_info) | |
233 | + sizeof (struct other_sections) * (num_sections - 1)); | |
234 | sap = (struct section_addr_info *) xmalloc (size); | |
235 | memset (sap, 0, size); | |
a39a16c4 MM |
236 | |
237 | return sap; | |
238 | } | |
62557bbc KB |
239 | |
240 | /* Build (allocate and populate) a section_addr_info struct from | |
c378eb4e | 241 | an existing section table. */ |
62557bbc KB |
242 | |
243 | extern struct section_addr_info * | |
0542c86d PA |
244 | build_section_addr_info_from_section_table (const struct target_section *start, |
245 | const struct target_section *end) | |
62557bbc KB |
246 | { |
247 | struct section_addr_info *sap; | |
0542c86d | 248 | const struct target_section *stp; |
62557bbc KB |
249 | int oidx; |
250 | ||
a39a16c4 | 251 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
252 | |
253 | for (stp = start, oidx = 0; stp != end; stp++) | |
254 | { | |
2b2848e2 DE |
255 | struct bfd_section *asect = stp->the_bfd_section; |
256 | bfd *abfd = asect->owner; | |
257 | ||
258 | if (bfd_get_section_flags (abfd, asect) & (SEC_ALLOC | SEC_LOAD) | |
a39a16c4 | 259 | && oidx < end - start) |
62557bbc KB |
260 | { |
261 | sap->other[oidx].addr = stp->addr; | |
2b2848e2 DE |
262 | sap->other[oidx].name = xstrdup (bfd_section_name (abfd, asect)); |
263 | sap->other[oidx].sectindex = gdb_bfd_section_index (abfd, asect); | |
62557bbc KB |
264 | oidx++; |
265 | } | |
266 | } | |
267 | ||
d76488d8 TT |
268 | sap->num_sections = oidx; |
269 | ||
62557bbc KB |
270 | return sap; |
271 | } | |
272 | ||
82ccf5a5 | 273 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 274 | |
82ccf5a5 JK |
275 | static struct section_addr_info * |
276 | build_section_addr_info_from_bfd (bfd *abfd) | |
089b4803 TG |
277 | { |
278 | struct section_addr_info *sap; | |
279 | int i; | |
280 | struct bfd_section *sec; | |
281 | ||
82ccf5a5 JK |
282 | sap = alloc_section_addr_info (bfd_count_sections (abfd)); |
283 | for (i = 0, sec = abfd->sections; sec != NULL; sec = sec->next) | |
284 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) | |
012836ea | 285 | { |
82ccf5a5 JK |
286 | sap->other[i].addr = bfd_get_section_vma (abfd, sec); |
287 | sap->other[i].name = xstrdup (bfd_get_section_name (abfd, sec)); | |
65cf3563 | 288 | sap->other[i].sectindex = gdb_bfd_section_index (abfd, sec); |
012836ea JK |
289 | i++; |
290 | } | |
d76488d8 TT |
291 | |
292 | sap->num_sections = i; | |
293 | ||
089b4803 TG |
294 | return sap; |
295 | } | |
296 | ||
82ccf5a5 JK |
297 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
298 | ||
299 | struct section_addr_info * | |
300 | build_section_addr_info_from_objfile (const struct objfile *objfile) | |
301 | { | |
302 | struct section_addr_info *sap; | |
303 | int i; | |
304 | ||
305 | /* Before reread_symbols gets rewritten it is not safe to call: | |
306 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
307 | */ | |
308 | sap = build_section_addr_info_from_bfd (objfile->obfd); | |
d76488d8 | 309 | for (i = 0; i < sap->num_sections; i++) |
82ccf5a5 JK |
310 | { |
311 | int sectindex = sap->other[i].sectindex; | |
312 | ||
313 | sap->other[i].addr += objfile->section_offsets->offsets[sectindex]; | |
314 | } | |
315 | return sap; | |
316 | } | |
62557bbc | 317 | |
c378eb4e | 318 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ |
62557bbc KB |
319 | |
320 | extern void | |
321 | free_section_addr_info (struct section_addr_info *sap) | |
322 | { | |
323 | int idx; | |
324 | ||
a39a16c4 | 325 | for (idx = 0; idx < sap->num_sections; idx++) |
d76488d8 | 326 | xfree (sap->other[idx].name); |
b8c9b27d | 327 | xfree (sap); |
62557bbc KB |
328 | } |
329 | ||
e8289572 | 330 | /* Initialize OBJFILE's sect_index_* members. */ |
3b7bacac | 331 | |
e8289572 JB |
332 | static void |
333 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 334 | { |
e8289572 | 335 | asection *sect; |
c906108c | 336 | int i; |
5417f6dc | 337 | |
b8fbeb18 | 338 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 339 | if (sect) |
b8fbeb18 EZ |
340 | objfile->sect_index_text = sect->index; |
341 | ||
342 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 343 | if (sect) |
b8fbeb18 EZ |
344 | objfile->sect_index_data = sect->index; |
345 | ||
346 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 347 | if (sect) |
b8fbeb18 EZ |
348 | objfile->sect_index_bss = sect->index; |
349 | ||
350 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 351 | if (sect) |
b8fbeb18 EZ |
352 | objfile->sect_index_rodata = sect->index; |
353 | ||
bbcd32ad FF |
354 | /* This is where things get really weird... We MUST have valid |
355 | indices for the various sect_index_* members or gdb will abort. | |
356 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
357 | accomodate that. First, check for a file with the standard |
358 | one or two segments. */ | |
359 | ||
360 | symfile_find_segment_sections (objfile); | |
361 | ||
362 | /* Except when explicitly adding symbol files at some address, | |
363 | section_offsets contains nothing but zeros, so it doesn't matter | |
364 | which slot in section_offsets the individual sect_index_* members | |
365 | index into. So if they are all zero, it is safe to just point | |
366 | all the currently uninitialized indices to the first slot. But | |
367 | beware: if this is the main executable, it may be relocated | |
368 | later, e.g. by the remote qOffsets packet, and then this will | |
369 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
370 | |
371 | for (i = 0; i < objfile->num_sections; i++) | |
372 | { | |
373 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
374 | { | |
375 | break; | |
376 | } | |
377 | } | |
378 | if (i == objfile->num_sections) | |
379 | { | |
380 | if (objfile->sect_index_text == -1) | |
381 | objfile->sect_index_text = 0; | |
382 | if (objfile->sect_index_data == -1) | |
383 | objfile->sect_index_data = 0; | |
384 | if (objfile->sect_index_bss == -1) | |
385 | objfile->sect_index_bss = 0; | |
386 | if (objfile->sect_index_rodata == -1) | |
387 | objfile->sect_index_rodata = 0; | |
388 | } | |
b8fbeb18 | 389 | } |
c906108c | 390 | |
c1bd25fd DJ |
391 | /* The arguments to place_section. */ |
392 | ||
393 | struct place_section_arg | |
394 | { | |
395 | struct section_offsets *offsets; | |
396 | CORE_ADDR lowest; | |
397 | }; | |
398 | ||
399 | /* Find a unique offset to use for loadable section SECT if | |
400 | the user did not provide an offset. */ | |
401 | ||
2c0b251b | 402 | static void |
c1bd25fd DJ |
403 | place_section (bfd *abfd, asection *sect, void *obj) |
404 | { | |
19ba03f4 | 405 | struct place_section_arg *arg = (struct place_section_arg *) obj; |
c1bd25fd DJ |
406 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; |
407 | int done; | |
3bd72c6f | 408 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 409 | |
2711e456 DJ |
410 | /* We are only interested in allocated sections. */ |
411 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
412 | return; |
413 | ||
414 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 415 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
416 | return; |
417 | ||
418 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
419 | start_addr = (arg->lowest + align - 1) & -align; |
420 | ||
c1bd25fd DJ |
421 | do { |
422 | asection *cur_sec; | |
c1bd25fd | 423 | |
c1bd25fd DJ |
424 | done = 1; |
425 | ||
426 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
427 | { | |
428 | int indx = cur_sec->index; | |
c1bd25fd DJ |
429 | |
430 | /* We don't need to compare against ourself. */ | |
431 | if (cur_sec == sect) | |
432 | continue; | |
433 | ||
2711e456 DJ |
434 | /* We can only conflict with allocated sections. */ |
435 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
436 | continue; |
437 | ||
438 | /* If the section offset is 0, either the section has not been placed | |
439 | yet, or it was the lowest section placed (in which case LOWEST | |
440 | will be past its end). */ | |
441 | if (offsets[indx] == 0) | |
442 | continue; | |
443 | ||
444 | /* If this section would overlap us, then we must move up. */ | |
445 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
446 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
447 | { | |
448 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
449 | start_addr = (start_addr + align - 1) & -align; | |
450 | done = 0; | |
3bd72c6f | 451 | break; |
c1bd25fd DJ |
452 | } |
453 | ||
454 | /* Otherwise, we appear to be OK. So far. */ | |
455 | } | |
456 | } | |
457 | while (!done); | |
458 | ||
65cf3563 | 459 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
c1bd25fd | 460 | arg->lowest = start_addr + bfd_get_section_size (sect); |
c1bd25fd | 461 | } |
e8289572 | 462 | |
75242ef4 JK |
463 | /* Store struct section_addr_info as prepared (made relative and with SECTINDEX |
464 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS | |
465 | entries. */ | |
e8289572 JB |
466 | |
467 | void | |
75242ef4 JK |
468 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
469 | int num_sections, | |
3189cb12 | 470 | const struct section_addr_info *addrs) |
e8289572 JB |
471 | { |
472 | int i; | |
473 | ||
75242ef4 | 474 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 475 | |
c378eb4e | 476 | /* Now calculate offsets for section that were specified by the caller. */ |
d76488d8 | 477 | for (i = 0; i < addrs->num_sections; i++) |
e8289572 | 478 | { |
3189cb12 | 479 | const struct other_sections *osp; |
e8289572 | 480 | |
75242ef4 | 481 | osp = &addrs->other[i]; |
5488dafb | 482 | if (osp->sectindex == -1) |
e8289572 JB |
483 | continue; |
484 | ||
c378eb4e | 485 | /* Record all sections in offsets. */ |
e8289572 | 486 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 487 | the BFD index. */ |
75242ef4 JK |
488 | section_offsets->offsets[osp->sectindex] = osp->addr; |
489 | } | |
490 | } | |
491 | ||
1276c759 JK |
492 | /* Transform section name S for a name comparison. prelink can split section |
493 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
494 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
495 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
496 | (`.sbss') section has invalid (increased) virtual address. */ | |
497 | ||
498 | static const char * | |
499 | addr_section_name (const char *s) | |
500 | { | |
501 | if (strcmp (s, ".dynbss") == 0) | |
502 | return ".bss"; | |
503 | if (strcmp (s, ".sdynbss") == 0) | |
504 | return ".sbss"; | |
505 | ||
506 | return s; | |
507 | } | |
508 | ||
82ccf5a5 JK |
509 | /* qsort comparator for addrs_section_sort. Sort entries in ascending order by |
510 | their (name, sectindex) pair. sectindex makes the sort by name stable. */ | |
511 | ||
512 | static int | |
513 | addrs_section_compar (const void *ap, const void *bp) | |
514 | { | |
515 | const struct other_sections *a = *((struct other_sections **) ap); | |
516 | const struct other_sections *b = *((struct other_sections **) bp); | |
22e048c9 | 517 | int retval; |
82ccf5a5 | 518 | |
1276c759 | 519 | retval = strcmp (addr_section_name (a->name), addr_section_name (b->name)); |
82ccf5a5 JK |
520 | if (retval) |
521 | return retval; | |
522 | ||
5488dafb | 523 | return a->sectindex - b->sectindex; |
82ccf5a5 JK |
524 | } |
525 | ||
526 | /* Provide sorted array of pointers to sections of ADDRS. The array is | |
527 | terminated by NULL. Caller is responsible to call xfree for it. */ | |
528 | ||
529 | static struct other_sections ** | |
530 | addrs_section_sort (struct section_addr_info *addrs) | |
531 | { | |
532 | struct other_sections **array; | |
533 | int i; | |
534 | ||
535 | /* `+ 1' for the NULL terminator. */ | |
8d749320 | 536 | array = XNEWVEC (struct other_sections *, addrs->num_sections + 1); |
d76488d8 | 537 | for (i = 0; i < addrs->num_sections; i++) |
82ccf5a5 JK |
538 | array[i] = &addrs->other[i]; |
539 | array[i] = NULL; | |
540 | ||
541 | qsort (array, i, sizeof (*array), addrs_section_compar); | |
542 | ||
543 | return array; | |
544 | } | |
545 | ||
75242ef4 | 546 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
547 | also SECTINDEXes specific to ABFD there. This function can be used to |
548 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
549 | |
550 | void | |
551 | addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd) | |
552 | { | |
553 | asection *lower_sect; | |
75242ef4 JK |
554 | CORE_ADDR lower_offset; |
555 | int i; | |
82ccf5a5 JK |
556 | struct cleanup *my_cleanup; |
557 | struct section_addr_info *abfd_addrs; | |
558 | struct other_sections **addrs_sorted, **abfd_addrs_sorted; | |
559 | struct other_sections **addrs_to_abfd_addrs; | |
75242ef4 JK |
560 | |
561 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
562 | continguous sections. */ |
563 | lower_sect = NULL; | |
564 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
565 | if (lower_sect == NULL) |
566 | { | |
567 | warning (_("no loadable sections found in added symbol-file %s"), | |
568 | bfd_get_filename (abfd)); | |
569 | lower_offset = 0; | |
e8289572 | 570 | } |
75242ef4 JK |
571 | else |
572 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
573 | ||
82ccf5a5 JK |
574 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
575 | in ABFD. Section names are not unique - there can be multiple sections of | |
576 | the same name. Also the sections of the same name do not have to be | |
577 | adjacent to each other. Some sections may be present only in one of the | |
578 | files. Even sections present in both files do not have to be in the same | |
579 | order. | |
580 | ||
581 | Use stable sort by name for the sections in both files. Then linearly | |
582 | scan both lists matching as most of the entries as possible. */ | |
583 | ||
584 | addrs_sorted = addrs_section_sort (addrs); | |
585 | my_cleanup = make_cleanup (xfree, addrs_sorted); | |
586 | ||
587 | abfd_addrs = build_section_addr_info_from_bfd (abfd); | |
588 | make_cleanup_free_section_addr_info (abfd_addrs); | |
589 | abfd_addrs_sorted = addrs_section_sort (abfd_addrs); | |
590 | make_cleanup (xfree, abfd_addrs_sorted); | |
591 | ||
c378eb4e MS |
592 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
593 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 | 594 | |
8d749320 | 595 | addrs_to_abfd_addrs = XCNEWVEC (struct other_sections *, addrs->num_sections); |
82ccf5a5 JK |
596 | make_cleanup (xfree, addrs_to_abfd_addrs); |
597 | ||
598 | while (*addrs_sorted) | |
599 | { | |
1276c759 | 600 | const char *sect_name = addr_section_name ((*addrs_sorted)->name); |
82ccf5a5 JK |
601 | |
602 | while (*abfd_addrs_sorted | |
1276c759 JK |
603 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
604 | sect_name) < 0) | |
82ccf5a5 JK |
605 | abfd_addrs_sorted++; |
606 | ||
607 | if (*abfd_addrs_sorted | |
1276c759 JK |
608 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
609 | sect_name) == 0) | |
82ccf5a5 JK |
610 | { |
611 | int index_in_addrs; | |
612 | ||
613 | /* Make the found item directly addressable from ADDRS. */ | |
614 | index_in_addrs = *addrs_sorted - addrs->other; | |
615 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); | |
616 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_addrs_sorted; | |
617 | ||
618 | /* Never use the same ABFD entry twice. */ | |
619 | abfd_addrs_sorted++; | |
620 | } | |
621 | ||
622 | addrs_sorted++; | |
623 | } | |
624 | ||
75242ef4 JK |
625 | /* Calculate offsets for the loadable sections. |
626 | FIXME! Sections must be in order of increasing loadable section | |
627 | so that contiguous sections can use the lower-offset!!! | |
628 | ||
629 | Adjust offsets if the segments are not contiguous. | |
630 | If the section is contiguous, its offset should be set to | |
631 | the offset of the highest loadable section lower than it | |
632 | (the loadable section directly below it in memory). | |
633 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
634 | ||
d76488d8 | 635 | for (i = 0; i < addrs->num_sections; i++) |
75242ef4 | 636 | { |
82ccf5a5 | 637 | struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
638 | |
639 | if (sect) | |
75242ef4 | 640 | { |
c378eb4e | 641 | /* This is the index used by BFD. */ |
82ccf5a5 | 642 | addrs->other[i].sectindex = sect->sectindex; |
672d9c23 JK |
643 | |
644 | if (addrs->other[i].addr != 0) | |
75242ef4 | 645 | { |
82ccf5a5 | 646 | addrs->other[i].addr -= sect->addr; |
75242ef4 | 647 | lower_offset = addrs->other[i].addr; |
75242ef4 JK |
648 | } |
649 | else | |
672d9c23 | 650 | addrs->other[i].addr = lower_offset; |
75242ef4 JK |
651 | } |
652 | else | |
672d9c23 | 653 | { |
1276c759 JK |
654 | /* addr_section_name transformation is not used for SECT_NAME. */ |
655 | const char *sect_name = addrs->other[i].name; | |
656 | ||
b0fcb67f JK |
657 | /* This section does not exist in ABFD, which is normally |
658 | unexpected and we want to issue a warning. | |
659 | ||
4d9743af JK |
660 | However, the ELF prelinker does create a few sections which are |
661 | marked in the main executable as loadable (they are loaded in | |
662 | memory from the DYNAMIC segment) and yet are not present in | |
663 | separate debug info files. This is fine, and should not cause | |
664 | a warning. Shared libraries contain just the section | |
665 | ".gnu.liblist" but it is not marked as loadable there. There is | |
666 | no other way to identify them than by their name as the sections | |
1276c759 JK |
667 | created by prelink have no special flags. |
668 | ||
669 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f JK |
670 | |
671 | if (!(strcmp (sect_name, ".gnu.liblist") == 0 | |
4d9743af | 672 | || strcmp (sect_name, ".gnu.conflict") == 0 |
1276c759 JK |
673 | || (strcmp (sect_name, ".bss") == 0 |
674 | && i > 0 | |
675 | && strcmp (addrs->other[i - 1].name, ".dynbss") == 0 | |
676 | && addrs_to_abfd_addrs[i - 1] != NULL) | |
677 | || (strcmp (sect_name, ".sbss") == 0 | |
678 | && i > 0 | |
679 | && strcmp (addrs->other[i - 1].name, ".sdynbss") == 0 | |
680 | && addrs_to_abfd_addrs[i - 1] != NULL))) | |
b0fcb67f JK |
681 | warning (_("section %s not found in %s"), sect_name, |
682 | bfd_get_filename (abfd)); | |
683 | ||
672d9c23 | 684 | addrs->other[i].addr = 0; |
5488dafb | 685 | addrs->other[i].sectindex = -1; |
672d9c23 | 686 | } |
75242ef4 | 687 | } |
82ccf5a5 JK |
688 | |
689 | do_cleanups (my_cleanup); | |
75242ef4 JK |
690 | } |
691 | ||
692 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
693 | of how to represent it for fast symbol reading. This is the default | |
694 | version of the sym_fns.sym_offsets function for symbol readers that | |
695 | don't need to do anything special. It allocates a section_offsets table | |
696 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
697 | ||
698 | void | |
699 | default_symfile_offsets (struct objfile *objfile, | |
3189cb12 | 700 | const struct section_addr_info *addrs) |
75242ef4 | 701 | { |
d445b2f6 | 702 | objfile->num_sections = gdb_bfd_count_sections (objfile->obfd); |
75242ef4 JK |
703 | objfile->section_offsets = (struct section_offsets *) |
704 | obstack_alloc (&objfile->objfile_obstack, | |
705 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
706 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
707 | objfile->num_sections, addrs); | |
e8289572 | 708 | |
c1bd25fd DJ |
709 | /* For relocatable files, all loadable sections will start at zero. |
710 | The zero is meaningless, so try to pick arbitrary addresses such | |
711 | that no loadable sections overlap. This algorithm is quadratic, | |
712 | but the number of sections in a single object file is generally | |
713 | small. */ | |
714 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
715 | { | |
716 | struct place_section_arg arg; | |
2711e456 DJ |
717 | bfd *abfd = objfile->obfd; |
718 | asection *cur_sec; | |
2711e456 DJ |
719 | |
720 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
721 | /* We do not expect this to happen; just skip this step if the | |
722 | relocatable file has a section with an assigned VMA. */ | |
723 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
724 | break; | |
725 | ||
726 | if (cur_sec == NULL) | |
727 | { | |
728 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
729 | ||
730 | /* Pick non-overlapping offsets for sections the user did not | |
731 | place explicitly. */ | |
732 | arg.offsets = objfile->section_offsets; | |
733 | arg.lowest = 0; | |
734 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
735 | ||
736 | /* Correctly filling in the section offsets is not quite | |
737 | enough. Relocatable files have two properties that | |
738 | (most) shared objects do not: | |
739 | ||
740 | - Their debug information will contain relocations. Some | |
741 | shared libraries do also, but many do not, so this can not | |
742 | be assumed. | |
743 | ||
744 | - If there are multiple code sections they will be loaded | |
745 | at different relative addresses in memory than they are | |
746 | in the objfile, since all sections in the file will start | |
747 | at address zero. | |
748 | ||
749 | Because GDB has very limited ability to map from an | |
750 | address in debug info to the correct code section, | |
751 | it relies on adding SECT_OFF_TEXT to things which might be | |
752 | code. If we clear all the section offsets, and set the | |
753 | section VMAs instead, then symfile_relocate_debug_section | |
754 | will return meaningful debug information pointing at the | |
755 | correct sections. | |
756 | ||
757 | GDB has too many different data structures for section | |
758 | addresses - a bfd, objfile, and so_list all have section | |
759 | tables, as does exec_ops. Some of these could probably | |
760 | be eliminated. */ | |
761 | ||
762 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
763 | cur_sec = cur_sec->next) | |
764 | { | |
765 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
766 | continue; | |
767 | ||
768 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
769 | exec_set_section_address (bfd_get_filename (abfd), |
770 | cur_sec->index, | |
30510692 | 771 | offsets[cur_sec->index]); |
2711e456 DJ |
772 | offsets[cur_sec->index] = 0; |
773 | } | |
774 | } | |
c1bd25fd DJ |
775 | } |
776 | ||
e8289572 | 777 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 778 | .rodata sections. */ |
e8289572 JB |
779 | init_objfile_sect_indices (objfile); |
780 | } | |
781 | ||
31d99776 DJ |
782 | /* Divide the file into segments, which are individual relocatable units. |
783 | This is the default version of the sym_fns.sym_segments function for | |
784 | symbol readers that do not have an explicit representation of segments. | |
785 | It assumes that object files do not have segments, and fully linked | |
786 | files have a single segment. */ | |
787 | ||
788 | struct symfile_segment_data * | |
789 | default_symfile_segments (bfd *abfd) | |
790 | { | |
791 | int num_sections, i; | |
792 | asection *sect; | |
793 | struct symfile_segment_data *data; | |
794 | CORE_ADDR low, high; | |
795 | ||
796 | /* Relocatable files contain enough information to position each | |
797 | loadable section independently; they should not be relocated | |
798 | in segments. */ | |
799 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
800 | return NULL; | |
801 | ||
802 | /* Make sure there is at least one loadable section in the file. */ | |
803 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
804 | { | |
805 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
806 | continue; | |
807 | ||
808 | break; | |
809 | } | |
810 | if (sect == NULL) | |
811 | return NULL; | |
812 | ||
813 | low = bfd_get_section_vma (abfd, sect); | |
814 | high = low + bfd_get_section_size (sect); | |
815 | ||
41bf6aca | 816 | data = XCNEW (struct symfile_segment_data); |
31d99776 | 817 | data->num_segments = 1; |
fc270c35 TT |
818 | data->segment_bases = XCNEW (CORE_ADDR); |
819 | data->segment_sizes = XCNEW (CORE_ADDR); | |
31d99776 DJ |
820 | |
821 | num_sections = bfd_count_sections (abfd); | |
fc270c35 | 822 | data->segment_info = XCNEWVEC (int, num_sections); |
31d99776 DJ |
823 | |
824 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
825 | { | |
826 | CORE_ADDR vma; | |
827 | ||
828 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
829 | continue; | |
830 | ||
831 | vma = bfd_get_section_vma (abfd, sect); | |
832 | if (vma < low) | |
833 | low = vma; | |
834 | if (vma + bfd_get_section_size (sect) > high) | |
835 | high = vma + bfd_get_section_size (sect); | |
836 | ||
837 | data->segment_info[i] = 1; | |
838 | } | |
839 | ||
840 | data->segment_bases[0] = low; | |
841 | data->segment_sizes[0] = high - low; | |
842 | ||
843 | return data; | |
844 | } | |
845 | ||
608e2dbb TT |
846 | /* This is a convenience function to call sym_read for OBJFILE and |
847 | possibly force the partial symbols to be read. */ | |
848 | ||
849 | static void | |
b15cc25c | 850 | read_symbols (struct objfile *objfile, symfile_add_flags add_flags) |
608e2dbb TT |
851 | { |
852 | (*objfile->sf->sym_read) (objfile, add_flags); | |
23732b1e | 853 | objfile->per_bfd->minsyms_read = true; |
8a92335b JK |
854 | |
855 | /* find_separate_debug_file_in_section should be called only if there is | |
856 | single binary with no existing separate debug info file. */ | |
857 | if (!objfile_has_partial_symbols (objfile) | |
858 | && objfile->separate_debug_objfile == NULL | |
859 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb | 860 | { |
192b62ce | 861 | gdb_bfd_ref_ptr abfd (find_separate_debug_file_in_section (objfile)); |
608e2dbb TT |
862 | |
863 | if (abfd != NULL) | |
24ba069a JK |
864 | { |
865 | /* find_separate_debug_file_in_section uses the same filename for the | |
866 | virtual section-as-bfd like the bfd filename containing the | |
867 | section. Therefore use also non-canonical name form for the same | |
868 | file containing the section. */ | |
192b62ce TT |
869 | symbol_file_add_separate (abfd.get (), objfile->original_name, |
870 | add_flags, objfile); | |
24ba069a | 871 | } |
608e2dbb TT |
872 | } |
873 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
874 | require_partial_symbols (objfile, 0); | |
875 | } | |
876 | ||
3d6e24f0 JB |
877 | /* Initialize entry point information for this objfile. */ |
878 | ||
879 | static void | |
880 | init_entry_point_info (struct objfile *objfile) | |
881 | { | |
6ef55de7 TT |
882 | struct entry_info *ei = &objfile->per_bfd->ei; |
883 | ||
884 | if (ei->initialized) | |
885 | return; | |
886 | ei->initialized = 1; | |
887 | ||
3d6e24f0 JB |
888 | /* Save startup file's range of PC addresses to help blockframe.c |
889 | decide where the bottom of the stack is. */ | |
890 | ||
891 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
892 | { | |
893 | /* Executable file -- record its entry point so we'll recognize | |
894 | the startup file because it contains the entry point. */ | |
6ef55de7 TT |
895 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
896 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
897 | } |
898 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
899 | && bfd_get_start_address (objfile->obfd) != 0) | |
900 | { | |
901 | /* Some shared libraries may have entry points set and be | |
902 | runnable. There's no clear way to indicate this, so just check | |
903 | for values other than zero. */ | |
6ef55de7 TT |
904 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
905 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
906 | } |
907 | else | |
908 | { | |
909 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
6ef55de7 | 910 | ei->entry_point_p = 0; |
3d6e24f0 JB |
911 | } |
912 | ||
6ef55de7 | 913 | if (ei->entry_point_p) |
3d6e24f0 | 914 | { |
53eddfa6 | 915 | struct obj_section *osect; |
6ef55de7 | 916 | CORE_ADDR entry_point = ei->entry_point; |
53eddfa6 | 917 | int found; |
3d6e24f0 JB |
918 | |
919 | /* Make certain that the address points at real code, and not a | |
920 | function descriptor. */ | |
921 | entry_point | |
df6d5441 | 922 | = gdbarch_convert_from_func_ptr_addr (get_objfile_arch (objfile), |
3d6e24f0 JB |
923 | entry_point, |
924 | ¤t_target); | |
925 | ||
926 | /* Remove any ISA markers, so that this matches entries in the | |
927 | symbol table. */ | |
6ef55de7 | 928 | ei->entry_point |
df6d5441 | 929 | = gdbarch_addr_bits_remove (get_objfile_arch (objfile), entry_point); |
53eddfa6 TT |
930 | |
931 | found = 0; | |
932 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
933 | { | |
934 | struct bfd_section *sect = osect->the_bfd_section; | |
935 | ||
936 | if (entry_point >= bfd_get_section_vma (objfile->obfd, sect) | |
937 | && entry_point < (bfd_get_section_vma (objfile->obfd, sect) | |
938 | + bfd_get_section_size (sect))) | |
939 | { | |
6ef55de7 | 940 | ei->the_bfd_section_index |
53eddfa6 TT |
941 | = gdb_bfd_section_index (objfile->obfd, sect); |
942 | found = 1; | |
943 | break; | |
944 | } | |
945 | } | |
946 | ||
947 | if (!found) | |
6ef55de7 | 948 | ei->the_bfd_section_index = SECT_OFF_TEXT (objfile); |
3d6e24f0 JB |
949 | } |
950 | } | |
951 | ||
c906108c SS |
952 | /* Process a symbol file, as either the main file or as a dynamically |
953 | loaded file. | |
954 | ||
36e4d068 JB |
955 | This function does not set the OBJFILE's entry-point info. |
956 | ||
96baa820 JM |
957 | OBJFILE is where the symbols are to be read from. |
958 | ||
7e8580c1 JB |
959 | ADDRS is the list of section load addresses. If the user has given |
960 | an 'add-symbol-file' command, then this is the list of offsets and | |
961 | addresses he or she provided as arguments to the command; or, if | |
962 | we're handling a shared library, these are the actual addresses the | |
963 | sections are loaded at, according to the inferior's dynamic linker | |
964 | (as gleaned by GDB's shared library code). We convert each address | |
965 | into an offset from the section VMA's as it appears in the object | |
966 | file, and then call the file's sym_offsets function to convert this | |
967 | into a format-specific offset table --- a `struct section_offsets'. | |
96baa820 | 968 | |
7eedccfa PP |
969 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
970 | an extra symbol file such as dynamically loaded code, and wether | |
971 | breakpoint reset should be deferred. */ | |
c906108c | 972 | |
36e4d068 JB |
973 | static void |
974 | syms_from_objfile_1 (struct objfile *objfile, | |
975 | struct section_addr_info *addrs, | |
b15cc25c | 976 | symfile_add_flags add_flags) |
c906108c | 977 | { |
a39a16c4 | 978 | struct section_addr_info *local_addr = NULL; |
c906108c | 979 | struct cleanup *old_chain; |
7eedccfa | 980 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 981 | |
8fb8eb5c | 982 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
c906108c | 983 | |
75245b24 | 984 | if (objfile->sf == NULL) |
36e4d068 JB |
985 | { |
986 | /* No symbols to load, but we still need to make sure | |
987 | that the section_offsets table is allocated. */ | |
d445b2f6 | 988 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
a7bfba49 | 989 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_sections); |
36e4d068 JB |
990 | |
991 | objfile->num_sections = num_sections; | |
992 | objfile->section_offsets | |
224c3ddb SM |
993 | = (struct section_offsets *) obstack_alloc (&objfile->objfile_obstack, |
994 | size); | |
36e4d068 JB |
995 | memset (objfile->section_offsets, 0, size); |
996 | return; | |
997 | } | |
75245b24 | 998 | |
c906108c SS |
999 | /* Make sure that partially constructed symbol tables will be cleaned up |
1000 | if an error occurs during symbol reading. */ | |
74b7792f | 1001 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 1002 | |
6bf667bb DE |
1003 | /* If ADDRS is NULL, put together a dummy address list. |
1004 | We now establish the convention that an addr of zero means | |
c378eb4e | 1005 | no load address was specified. */ |
6bf667bb | 1006 | if (! addrs) |
a39a16c4 | 1007 | { |
d445b2f6 | 1008 | local_addr = alloc_section_addr_info (1); |
a39a16c4 MM |
1009 | make_cleanup (xfree, local_addr); |
1010 | addrs = local_addr; | |
1011 | } | |
1012 | ||
c5aa993b | 1013 | if (mainline) |
c906108c SS |
1014 | { |
1015 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 1016 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 1017 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
1018 | |
1019 | /* Since no error yet, throw away the old symbol table. */ | |
1020 | ||
1021 | if (symfile_objfile != NULL) | |
1022 | { | |
1023 | free_objfile (symfile_objfile); | |
adb7f338 | 1024 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
1025 | } |
1026 | ||
1027 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
1028 | If the user wants to get rid of them, they should do "symbol-file" |
1029 | without arguments first. Not sure this is the best behavior | |
1030 | (PR 2207). */ | |
c906108c | 1031 | |
c5aa993b | 1032 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
1033 | } |
1034 | ||
1035 | /* Convert addr into an offset rather than an absolute address. | |
1036 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 1037 | and assume that <addr> is where that got loaded. |
c906108c | 1038 | |
53a5351d JM |
1039 | We no longer warn if the lowest section is not a text segment (as |
1040 | happens for the PA64 port. */ | |
6bf667bb | 1041 | if (addrs->num_sections > 0) |
75242ef4 | 1042 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
1043 | |
1044 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
1045 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 1046 | initial symbol reading for this file. */ |
c906108c | 1047 | |
c5aa993b | 1048 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 1049 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 1050 | |
6bf667bb | 1051 | (*objfile->sf->sym_offsets) (objfile, addrs); |
c906108c | 1052 | |
608e2dbb | 1053 | read_symbols (objfile, add_flags); |
b11896a5 | 1054 | |
c906108c SS |
1055 | /* Discard cleanups as symbol reading was successful. */ |
1056 | ||
1057 | discard_cleanups (old_chain); | |
f7545552 | 1058 | xfree (local_addr); |
c906108c SS |
1059 | } |
1060 | ||
36e4d068 JB |
1061 | /* Same as syms_from_objfile_1, but also initializes the objfile |
1062 | entry-point info. */ | |
1063 | ||
6bf667bb | 1064 | static void |
36e4d068 JB |
1065 | syms_from_objfile (struct objfile *objfile, |
1066 | struct section_addr_info *addrs, | |
b15cc25c | 1067 | symfile_add_flags add_flags) |
36e4d068 | 1068 | { |
6bf667bb | 1069 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
1070 | init_entry_point_info (objfile); |
1071 | } | |
1072 | ||
c906108c SS |
1073 | /* Perform required actions after either reading in the initial |
1074 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1075 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1076 | |
e7d52ed3 | 1077 | static void |
b15cc25c | 1078 | finish_new_objfile (struct objfile *objfile, symfile_add_flags add_flags) |
c906108c | 1079 | { |
c906108c | 1080 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1081 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1082 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1083 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1084 | { |
1085 | /* OK, make it the "real" symbol file. */ | |
1086 | symfile_objfile = objfile; | |
1087 | ||
c1e56572 | 1088 | clear_symtab_users (add_flags); |
c906108c | 1089 | } |
7eedccfa | 1090 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1091 | { |
69de3c6a | 1092 | breakpoint_re_set (); |
c906108c SS |
1093 | } |
1094 | ||
1095 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 1096 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
1097 | } |
1098 | ||
1099 | /* Process a symbol file, as either the main file or as a dynamically | |
1100 | loaded file. | |
1101 | ||
5417f6dc | 1102 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1103 | A new reference is acquired by this function. |
7904e09f | 1104 | |
24ba069a JK |
1105 | For NAME description see allocate_objfile's definition. |
1106 | ||
7eedccfa PP |
1107 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1108 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f | 1109 | |
6bf667bb | 1110 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1111 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1112 | |
63524580 JK |
1113 | PARENT is the original objfile if ABFD is a separate debug info file. |
1114 | Otherwise PARENT is NULL. | |
1115 | ||
c906108c | 1116 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1117 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1118 | |
7904e09f | 1119 | static struct objfile * |
b15cc25c PA |
1120 | symbol_file_add_with_addrs (bfd *abfd, const char *name, |
1121 | symfile_add_flags add_flags, | |
6bf667bb | 1122 | struct section_addr_info *addrs, |
b15cc25c | 1123 | objfile_flags flags, struct objfile *parent) |
c906108c SS |
1124 | { |
1125 | struct objfile *objfile; | |
7eedccfa | 1126 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1127 | const int mainline = add_flags & SYMFILE_MAINLINE; |
770e7fc7 | 1128 | const int should_print = (print_symbol_loading_p (from_tty, mainline, 1) |
b11896a5 TT |
1129 | && (readnow_symbol_files |
1130 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1131 | |
9291a0cd | 1132 | if (readnow_symbol_files) |
b11896a5 TT |
1133 | { |
1134 | flags |= OBJF_READNOW; | |
1135 | add_flags &= ~SYMFILE_NO_READ; | |
1136 | } | |
9291a0cd | 1137 | |
5417f6dc RM |
1138 | /* Give user a chance to burp if we'd be |
1139 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1140 | |
1141 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1142 | && mainline |
c906108c | 1143 | && from_tty |
9e2f0ad4 | 1144 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1145 | error (_("Not confirmed.")); |
c906108c | 1146 | |
b15cc25c PA |
1147 | if (mainline) |
1148 | flags |= OBJF_MAINLINE; | |
1149 | objfile = allocate_objfile (abfd, name, flags); | |
c906108c | 1150 | |
63524580 JK |
1151 | if (parent) |
1152 | add_separate_debug_objfile (objfile, parent); | |
1153 | ||
78a4a9b9 AC |
1154 | /* We either created a new mapped symbol table, mapped an existing |
1155 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1156 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1157 | if (should_print) |
c906108c | 1158 | { |
769d7dc4 AC |
1159 | if (deprecated_pre_add_symbol_hook) |
1160 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1161 | else |
c906108c | 1162 | { |
55333a84 DE |
1163 | printf_unfiltered (_("Reading symbols from %s..."), name); |
1164 | wrap_here (""); | |
1165 | gdb_flush (gdb_stdout); | |
c906108c | 1166 | } |
c906108c | 1167 | } |
6bf667bb | 1168 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1169 | |
1170 | /* We now have at least a partial symbol table. Check to see if the | |
1171 | user requested that all symbols be read on initial access via either | |
1172 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1173 | all partial symbol tables for this objfile if so. */ |
c906108c | 1174 | |
9291a0cd | 1175 | if ((flags & OBJF_READNOW)) |
c906108c | 1176 | { |
b11896a5 | 1177 | if (should_print) |
c906108c | 1178 | { |
a3f17187 | 1179 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1180 | wrap_here (""); |
1181 | gdb_flush (gdb_stdout); | |
1182 | } | |
1183 | ||
ccefe4c4 TT |
1184 | if (objfile->sf) |
1185 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1186 | } |
1187 | ||
b11896a5 | 1188 | if (should_print && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1189 | { |
1190 | wrap_here (""); | |
55333a84 | 1191 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1192 | wrap_here (""); |
1193 | } | |
1194 | ||
b11896a5 | 1195 | if (should_print) |
c906108c | 1196 | { |
769d7dc4 AC |
1197 | if (deprecated_post_add_symbol_hook) |
1198 | deprecated_post_add_symbol_hook (); | |
c906108c | 1199 | else |
55333a84 | 1200 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1201 | } |
1202 | ||
481d0f41 JB |
1203 | /* We print some messages regardless of whether 'from_tty || |
1204 | info_verbose' is true, so make sure they go out at the right | |
1205 | time. */ | |
1206 | gdb_flush (gdb_stdout); | |
1207 | ||
109f874e | 1208 | if (objfile->sf == NULL) |
8caee43b PP |
1209 | { |
1210 | observer_notify_new_objfile (objfile); | |
c378eb4e | 1211 | return objfile; /* No symbols. */ |
8caee43b | 1212 | } |
109f874e | 1213 | |
e7d52ed3 | 1214 | finish_new_objfile (objfile, add_flags); |
c906108c | 1215 | |
06d3b283 | 1216 | observer_notify_new_objfile (objfile); |
c906108c | 1217 | |
ce7d4522 | 1218 | bfd_cache_close_all (); |
c906108c SS |
1219 | return (objfile); |
1220 | } | |
1221 | ||
24ba069a JK |
1222 | /* Add BFD as a separate debug file for OBJFILE. For NAME description |
1223 | see allocate_objfile's definition. */ | |
9cce227f TG |
1224 | |
1225 | void | |
b15cc25c PA |
1226 | symbol_file_add_separate (bfd *bfd, const char *name, |
1227 | symfile_add_flags symfile_flags, | |
24ba069a | 1228 | struct objfile *objfile) |
9cce227f | 1229 | { |
089b4803 TG |
1230 | struct section_addr_info *sap; |
1231 | struct cleanup *my_cleanup; | |
1232 | ||
1233 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1234 | because sections of BFD may not match sections of OBJFILE and because | |
1235 | vma may have been modified by tools such as prelink. */ | |
1236 | sap = build_section_addr_info_from_objfile (objfile); | |
1237 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1238 | |
870f88f7 | 1239 | symbol_file_add_with_addrs |
24ba069a | 1240 | (bfd, name, symfile_flags, sap, |
9cce227f | 1241 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1242 | | OBJF_USERLOADED), |
1243 | objfile); | |
089b4803 TG |
1244 | |
1245 | do_cleanups (my_cleanup); | |
9cce227f | 1246 | } |
7904e09f | 1247 | |
eb4556d7 JB |
1248 | /* Process the symbol file ABFD, as either the main file or as a |
1249 | dynamically loaded file. | |
6bf667bb | 1250 | See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1251 | |
eb4556d7 | 1252 | struct objfile * |
b15cc25c PA |
1253 | symbol_file_add_from_bfd (bfd *abfd, const char *name, |
1254 | symfile_add_flags add_flags, | |
eb4556d7 | 1255 | struct section_addr_info *addrs, |
b15cc25c | 1256 | objfile_flags flags, struct objfile *parent) |
eb4556d7 | 1257 | { |
24ba069a JK |
1258 | return symbol_file_add_with_addrs (abfd, name, add_flags, addrs, flags, |
1259 | parent); | |
eb4556d7 JB |
1260 | } |
1261 | ||
7904e09f | 1262 | /* Process a symbol file, as either the main file or as a dynamically |
6bf667bb | 1263 | loaded file. See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1264 | |
7904e09f | 1265 | struct objfile * |
b15cc25c PA |
1266 | symbol_file_add (const char *name, symfile_add_flags add_flags, |
1267 | struct section_addr_info *addrs, objfile_flags flags) | |
7904e09f | 1268 | { |
192b62ce | 1269 | gdb_bfd_ref_ptr bfd (symfile_bfd_open (name)); |
8ac244b4 | 1270 | |
192b62ce TT |
1271 | return symbol_file_add_from_bfd (bfd.get (), name, add_flags, addrs, |
1272 | flags, NULL); | |
7904e09f JB |
1273 | } |
1274 | ||
d7db6da9 FN |
1275 | /* Call symbol_file_add() with default values and update whatever is |
1276 | affected by the loading of a new main(). | |
1277 | Used when the file is supplied in the gdb command line | |
1278 | and by some targets with special loading requirements. | |
1279 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1280 | argument for the switches that can only be specified in the symbol_file | |
1281 | command itself. */ | |
5417f6dc | 1282 | |
1adeb98a | 1283 | void |
ecf45d2c | 1284 | symbol_file_add_main (const char *args, symfile_add_flags add_flags) |
1adeb98a | 1285 | { |
ecf45d2c | 1286 | symbol_file_add_main_1 (args, add_flags, 0); |
d7db6da9 FN |
1287 | } |
1288 | ||
1289 | static void | |
ecf45d2c SL |
1290 | symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
1291 | objfile_flags flags) | |
d7db6da9 | 1292 | { |
ecf45d2c | 1293 | add_flags |= current_inferior ()->symfile_flags | SYMFILE_MAINLINE; |
7dcd53a0 | 1294 | |
7eedccfa | 1295 | symbol_file_add (args, add_flags, NULL, flags); |
d7db6da9 | 1296 | |
d7db6da9 FN |
1297 | /* Getting new symbols may change our opinion about |
1298 | what is frameless. */ | |
1299 | reinit_frame_cache (); | |
1300 | ||
b15cc25c | 1301 | if ((add_flags & SYMFILE_NO_READ) == 0) |
7dcd53a0 | 1302 | set_initial_language (); |
1adeb98a FN |
1303 | } |
1304 | ||
1305 | void | |
1306 | symbol_file_clear (int from_tty) | |
1307 | { | |
1308 | if ((have_full_symbols () || have_partial_symbols ()) | |
1309 | && from_tty | |
0430b0d6 AS |
1310 | && (symfile_objfile |
1311 | ? !query (_("Discard symbol table from `%s'? "), | |
4262abfb | 1312 | objfile_name (symfile_objfile)) |
0430b0d6 | 1313 | : !query (_("Discard symbol table? ")))) |
8a3fe4f8 | 1314 | error (_("Not confirmed.")); |
1adeb98a | 1315 | |
0133421a JK |
1316 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1317 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1318 | no_shared_libraries (NULL, from_tty); |
1319 | ||
0133421a JK |
1320 | free_all_objfiles (); |
1321 | ||
adb7f338 | 1322 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1323 | if (from_tty) |
1324 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1325 | } |
1326 | ||
c4dcb155 SM |
1327 | /* See symfile.h. */ |
1328 | ||
1329 | int separate_debug_file_debug = 0; | |
1330 | ||
5b5d99cf | 1331 | static int |
287ccc17 | 1332 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1333 | struct objfile *parent_objfile) |
5b5d99cf | 1334 | { |
904578ed JK |
1335 | unsigned long file_crc; |
1336 | int file_crc_p; | |
32a0e547 | 1337 | struct stat parent_stat, abfd_stat; |
904578ed | 1338 | int verified_as_different; |
32a0e547 JK |
1339 | |
1340 | /* Find a separate debug info file as if symbols would be present in | |
1341 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1342 | section can contain just the basename of PARENT_OBJFILE without any | |
1343 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1344 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1345 | |
4262abfb | 1346 | if (filename_cmp (name, objfile_name (parent_objfile)) == 0) |
32a0e547 | 1347 | return 0; |
5b5d99cf | 1348 | |
c4dcb155 SM |
1349 | if (separate_debug_file_debug) |
1350 | printf_unfiltered (_(" Trying %s\n"), name); | |
1351 | ||
192b62ce | 1352 | gdb_bfd_ref_ptr abfd (gdb_bfd_open (name, gnutarget, -1)); |
f1838a98 | 1353 | |
192b62ce | 1354 | if (abfd == NULL) |
5b5d99cf JB |
1355 | return 0; |
1356 | ||
0ba1096a | 1357 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1358 | |
1359 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1360 | st_ino; they always set it to zero. (Windows does provide a | |
0a93529c GB |
1361 | meaningful st_dev.) Files accessed from gdbservers that do not |
1362 | support the vFile:fstat packet will also have st_ino set to zero. | |
1363 | Do not indicate a duplicate library in either case. While there | |
1364 | is no guarantee that a system that provides meaningful inode | |
1365 | numbers will never set st_ino to zero, this is merely an | |
1366 | optimization, so we do not need to worry about false negatives. */ | |
32a0e547 | 1367 | |
192b62ce | 1368 | if (bfd_stat (abfd.get (), &abfd_stat) == 0 |
904578ed JK |
1369 | && abfd_stat.st_ino != 0 |
1370 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1371 | { |
904578ed JK |
1372 | if (abfd_stat.st_dev == parent_stat.st_dev |
1373 | && abfd_stat.st_ino == parent_stat.st_ino) | |
192b62ce | 1374 | return 0; |
904578ed | 1375 | verified_as_different = 1; |
32a0e547 | 1376 | } |
904578ed JK |
1377 | else |
1378 | verified_as_different = 0; | |
32a0e547 | 1379 | |
192b62ce | 1380 | file_crc_p = gdb_bfd_crc (abfd.get (), &file_crc); |
5b5d99cf | 1381 | |
904578ed JK |
1382 | if (!file_crc_p) |
1383 | return 0; | |
1384 | ||
287ccc17 JK |
1385 | if (crc != file_crc) |
1386 | { | |
dccee2de TT |
1387 | unsigned long parent_crc; |
1388 | ||
0a93529c GB |
1389 | /* If the files could not be verified as different with |
1390 | bfd_stat then we need to calculate the parent's CRC | |
1391 | to verify whether the files are different or not. */ | |
904578ed | 1392 | |
dccee2de | 1393 | if (!verified_as_different) |
904578ed | 1394 | { |
dccee2de | 1395 | if (!gdb_bfd_crc (parent_objfile->obfd, &parent_crc)) |
904578ed JK |
1396 | return 0; |
1397 | } | |
1398 | ||
dccee2de | 1399 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1400 | warning (_("the debug information found in \"%s\"" |
1401 | " does not match \"%s\" (CRC mismatch).\n"), | |
4262abfb | 1402 | name, objfile_name (parent_objfile)); |
904578ed | 1403 | |
287ccc17 JK |
1404 | return 0; |
1405 | } | |
1406 | ||
1407 | return 1; | |
5b5d99cf JB |
1408 | } |
1409 | ||
aa28a74e | 1410 | char *debug_file_directory = NULL; |
920d2a44 AC |
1411 | static void |
1412 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1413 | struct cmd_list_element *c, const char *value) | |
1414 | { | |
3e43a32a MS |
1415 | fprintf_filtered (file, |
1416 | _("The directory where separate debug " | |
1417 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1418 | value); |
1419 | } | |
5b5d99cf JB |
1420 | |
1421 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1422 | #define DEBUG_SUBDIRECTORY ".debug" | |
1423 | #endif | |
1424 | ||
1db33378 PP |
1425 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1426 | where the original file resides (may not be the same as | |
1427 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1428 | looking for. CANON_DIR is the "realpath" form of DIR. |
1429 | DIR must contain a trailing '/'. | |
1430 | Returns the path of the file with separate debug info, of NULL. */ | |
1db33378 PP |
1431 | |
1432 | static char * | |
1433 | find_separate_debug_file (const char *dir, | |
1434 | const char *canon_dir, | |
1435 | const char *debuglink, | |
1436 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1437 | { |
1db33378 PP |
1438 | char *debugdir; |
1439 | char *debugfile; | |
9cce227f | 1440 | int i; |
e4ab2fad JK |
1441 | VEC (char_ptr) *debugdir_vec; |
1442 | struct cleanup *back_to; | |
1443 | int ix; | |
5b5d99cf | 1444 | |
c4dcb155 SM |
1445 | if (separate_debug_file_debug) |
1446 | printf_unfiltered (_("\nLooking for separate debug info (debug link) for " | |
1447 | "%s\n"), objfile_name (objfile)); | |
1448 | ||
325fac50 | 1449 | /* Set I to std::max (strlen (canon_dir), strlen (dir)). */ |
1ffa32ee | 1450 | i = strlen (dir); |
1db33378 PP |
1451 | if (canon_dir != NULL && strlen (canon_dir) > i) |
1452 | i = strlen (canon_dir); | |
1ffa32ee | 1453 | |
224c3ddb SM |
1454 | debugfile |
1455 | = (char *) xmalloc (strlen (debug_file_directory) + 1 | |
1456 | + i | |
1457 | + strlen (DEBUG_SUBDIRECTORY) | |
1458 | + strlen ("/") | |
1459 | + strlen (debuglink) | |
1460 | + 1); | |
5b5d99cf JB |
1461 | |
1462 | /* First try in the same directory as the original file. */ | |
1463 | strcpy (debugfile, dir); | |
1db33378 | 1464 | strcat (debugfile, debuglink); |
5b5d99cf | 1465 | |
32a0e547 | 1466 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1467 | return debugfile; |
5417f6dc | 1468 | |
5b5d99cf JB |
1469 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1470 | strcpy (debugfile, dir); | |
1471 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1472 | strcat (debugfile, "/"); | |
1db33378 | 1473 | strcat (debugfile, debuglink); |
5b5d99cf | 1474 | |
32a0e547 | 1475 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1476 | return debugfile; |
5417f6dc | 1477 | |
24ddea62 | 1478 | /* Then try in the global debugfile directories. |
f888f159 | 1479 | |
24ddea62 JK |
1480 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1481 | cause "/..." lookups. */ | |
5417f6dc | 1482 | |
e4ab2fad JK |
1483 | debugdir_vec = dirnames_to_char_ptr_vec (debug_file_directory); |
1484 | back_to = make_cleanup_free_char_ptr_vec (debugdir_vec); | |
24ddea62 | 1485 | |
e4ab2fad JK |
1486 | for (ix = 0; VEC_iterate (char_ptr, debugdir_vec, ix, debugdir); ++ix) |
1487 | { | |
1488 | strcpy (debugfile, debugdir); | |
aa28a74e | 1489 | strcat (debugfile, "/"); |
24ddea62 | 1490 | strcat (debugfile, dir); |
1db33378 | 1491 | strcat (debugfile, debuglink); |
aa28a74e | 1492 | |
32a0e547 | 1493 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
a991ac28 TT |
1494 | { |
1495 | do_cleanups (back_to); | |
1496 | return debugfile; | |
1497 | } | |
24ddea62 JK |
1498 | |
1499 | /* If the file is in the sysroot, try using its base path in the | |
1500 | global debugfile directory. */ | |
1db33378 PP |
1501 | if (canon_dir != NULL |
1502 | && filename_ncmp (canon_dir, gdb_sysroot, | |
0ba1096a | 1503 | strlen (gdb_sysroot)) == 0 |
1db33378 | 1504 | && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)])) |
24ddea62 | 1505 | { |
e4ab2fad | 1506 | strcpy (debugfile, debugdir); |
1db33378 | 1507 | strcat (debugfile, canon_dir + strlen (gdb_sysroot)); |
24ddea62 | 1508 | strcat (debugfile, "/"); |
1db33378 | 1509 | strcat (debugfile, debuglink); |
24ddea62 | 1510 | |
32a0e547 | 1511 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
a991ac28 TT |
1512 | { |
1513 | do_cleanups (back_to); | |
1514 | return debugfile; | |
1515 | } | |
24ddea62 | 1516 | } |
aa28a74e | 1517 | } |
f888f159 | 1518 | |
e4ab2fad | 1519 | do_cleanups (back_to); |
25522fae | 1520 | xfree (debugfile); |
1db33378 PP |
1521 | return NULL; |
1522 | } | |
1523 | ||
7edbb660 | 1524 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1525 | If there were no directory separators in PATH, PATH will be empty |
1526 | string on return. */ | |
1527 | ||
1528 | static void | |
1529 | terminate_after_last_dir_separator (char *path) | |
1530 | { | |
1531 | int i; | |
1532 | ||
1533 | /* Strip off the final filename part, leaving the directory name, | |
1534 | followed by a slash. The directory can be relative or absolute. */ | |
1535 | for (i = strlen(path) - 1; i >= 0; i--) | |
1536 | if (IS_DIR_SEPARATOR (path[i])) | |
1537 | break; | |
1538 | ||
1539 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1540 | path[i + 1] = '\0'; | |
1541 | } | |
1542 | ||
1543 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
1544 | Returns pathname, or NULL. */ | |
1545 | ||
1546 | char * | |
1547 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1548 | { | |
1549 | char *debuglink; | |
1550 | char *dir, *canon_dir; | |
1551 | char *debugfile; | |
1552 | unsigned long crc32; | |
1553 | struct cleanup *cleanups; | |
1554 | ||
cc0ea93c | 1555 | debuglink = bfd_get_debug_link_info (objfile->obfd, &crc32); |
1db33378 PP |
1556 | |
1557 | if (debuglink == NULL) | |
1558 | { | |
1559 | /* There's no separate debug info, hence there's no way we could | |
1560 | load it => no warning. */ | |
1561 | return NULL; | |
1562 | } | |
1563 | ||
71bdabee | 1564 | cleanups = make_cleanup (xfree, debuglink); |
4262abfb | 1565 | dir = xstrdup (objfile_name (objfile)); |
71bdabee | 1566 | make_cleanup (xfree, dir); |
1db33378 PP |
1567 | terminate_after_last_dir_separator (dir); |
1568 | canon_dir = lrealpath (dir); | |
1569 | ||
1570 | debugfile = find_separate_debug_file (dir, canon_dir, debuglink, | |
1571 | crc32, objfile); | |
1572 | xfree (canon_dir); | |
1573 | ||
1574 | if (debugfile == NULL) | |
1575 | { | |
1db33378 PP |
1576 | /* For PR gdb/9538, try again with realpath (if different from the |
1577 | original). */ | |
1578 | ||
1579 | struct stat st_buf; | |
1580 | ||
4262abfb JK |
1581 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1582 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 PP |
1583 | { |
1584 | char *symlink_dir; | |
1585 | ||
4262abfb | 1586 | symlink_dir = lrealpath (objfile_name (objfile)); |
1db33378 PP |
1587 | if (symlink_dir != NULL) |
1588 | { | |
1589 | make_cleanup (xfree, symlink_dir); | |
1590 | terminate_after_last_dir_separator (symlink_dir); | |
1591 | if (strcmp (dir, symlink_dir) != 0) | |
1592 | { | |
1593 | /* Different directory, so try using it. */ | |
1594 | debugfile = find_separate_debug_file (symlink_dir, | |
1595 | symlink_dir, | |
1596 | debuglink, | |
1597 | crc32, | |
1598 | objfile); | |
1599 | } | |
1600 | } | |
1601 | } | |
1db33378 | 1602 | } |
aa28a74e | 1603 | |
1db33378 | 1604 | do_cleanups (cleanups); |
25522fae | 1605 | return debugfile; |
5b5d99cf JB |
1606 | } |
1607 | ||
c906108c SS |
1608 | /* This is the symbol-file command. Read the file, analyze its |
1609 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1610 | the command is rather bizarre: |
1611 | ||
1612 | 1. The function buildargv implements various quoting conventions | |
1613 | which are undocumented and have little or nothing in common with | |
1614 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1615 | ||
1616 | 2. Options are used, which are not generally used in GDB (perhaps | |
1617 | "set mapped on", "set readnow on" would be better) | |
1618 | ||
1619 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1620 | conventions (because it is confusing and inconvenient). */ |
1621 | ||
1622 | void | |
1d8b34a7 | 1623 | symbol_file_command (const char *args, int from_tty) |
c906108c | 1624 | { |
c906108c SS |
1625 | dont_repeat (); |
1626 | ||
1627 | if (args == NULL) | |
1628 | { | |
1adeb98a | 1629 | symbol_file_clear (from_tty); |
c906108c SS |
1630 | } |
1631 | else | |
1632 | { | |
b15cc25c | 1633 | objfile_flags flags = OBJF_USERLOADED; |
ecf45d2c | 1634 | symfile_add_flags add_flags = 0; |
cb2f3a29 MK |
1635 | char *name = NULL; |
1636 | ||
ecf45d2c SL |
1637 | if (from_tty) |
1638 | add_flags |= SYMFILE_VERBOSE; | |
1639 | ||
773a1edc TT |
1640 | gdb_argv built_argv (args); |
1641 | for (char *arg : built_argv) | |
c906108c | 1642 | { |
773a1edc | 1643 | if (strcmp (arg, "-readnow") == 0) |
78a4a9b9 | 1644 | flags |= OBJF_READNOW; |
773a1edc TT |
1645 | else if (*arg == '-') |
1646 | error (_("unknown option `%s'"), arg); | |
78a4a9b9 AC |
1647 | else |
1648 | { | |
773a1edc TT |
1649 | symbol_file_add_main_1 (arg, add_flags, flags); |
1650 | name = arg; | |
78a4a9b9 | 1651 | } |
c906108c SS |
1652 | } |
1653 | ||
1654 | if (name == NULL) | |
cb2f3a29 | 1655 | error (_("no symbol file name was specified")); |
c906108c SS |
1656 | } |
1657 | } | |
1658 | ||
1659 | /* Set the initial language. | |
1660 | ||
cb2f3a29 MK |
1661 | FIXME: A better solution would be to record the language in the |
1662 | psymtab when reading partial symbols, and then use it (if known) to | |
1663 | set the language. This would be a win for formats that encode the | |
1664 | language in an easily discoverable place, such as DWARF. For | |
1665 | stabs, we can jump through hoops looking for specially named | |
1666 | symbols or try to intuit the language from the specific type of | |
1667 | stabs we find, but we can't do that until later when we read in | |
1668 | full symbols. */ | |
c906108c | 1669 | |
8b60591b | 1670 | void |
fba45db2 | 1671 | set_initial_language (void) |
c906108c | 1672 | { |
9e6c82ad | 1673 | enum language lang = main_language (); |
c906108c | 1674 | |
9e6c82ad | 1675 | if (lang == language_unknown) |
01f8c46d | 1676 | { |
bf6d8a91 | 1677 | char *name = main_name (); |
d12307c1 | 1678 | struct symbol *sym = lookup_symbol (name, NULL, VAR_DOMAIN, NULL).symbol; |
f888f159 | 1679 | |
bf6d8a91 TT |
1680 | if (sym != NULL) |
1681 | lang = SYMBOL_LANGUAGE (sym); | |
01f8c46d | 1682 | } |
cb2f3a29 | 1683 | |
ccefe4c4 TT |
1684 | if (lang == language_unknown) |
1685 | { | |
1686 | /* Make C the default language */ | |
1687 | lang = language_c; | |
c906108c | 1688 | } |
ccefe4c4 TT |
1689 | |
1690 | set_language (lang); | |
1691 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1692 | } |
1693 | ||
cb2f3a29 MK |
1694 | /* Open the file specified by NAME and hand it off to BFD for |
1695 | preliminary analysis. Return a newly initialized bfd *, which | |
1696 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1697 | absolute). In case of trouble, error() is called. */ | |
c906108c | 1698 | |
192b62ce | 1699 | gdb_bfd_ref_ptr |
97a41605 | 1700 | symfile_bfd_open (const char *name) |
c906108c | 1701 | { |
97a41605 GB |
1702 | int desc = -1; |
1703 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
c906108c | 1704 | |
97a41605 | 1705 | if (!is_target_filename (name)) |
f1838a98 | 1706 | { |
ee0c3293 | 1707 | char *absolute_name; |
f1838a98 | 1708 | |
ee0c3293 | 1709 | gdb::unique_xmalloc_ptr<char> expanded_name (tilde_expand (name)); |
c906108c | 1710 | |
97a41605 GB |
1711 | /* Look down path for it, allocate 2nd new malloc'd copy. */ |
1712 | desc = openp (getenv ("PATH"), | |
1713 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
ee0c3293 | 1714 | expanded_name.get (), O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1715 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
97a41605 GB |
1716 | if (desc < 0) |
1717 | { | |
ee0c3293 | 1718 | char *exename = (char *) alloca (strlen (expanded_name.get ()) + 5); |
433759f7 | 1719 | |
ee0c3293 | 1720 | strcat (strcpy (exename, expanded_name.get ()), ".exe"); |
97a41605 GB |
1721 | desc = openp (getenv ("PATH"), |
1722 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
1723 | exename, O_RDONLY | O_BINARY, &absolute_name); | |
1724 | } | |
c906108c | 1725 | #endif |
97a41605 | 1726 | if (desc < 0) |
ee0c3293 | 1727 | perror_with_name (expanded_name.get ()); |
cb2f3a29 | 1728 | |
97a41605 GB |
1729 | make_cleanup (xfree, absolute_name); |
1730 | name = absolute_name; | |
1731 | } | |
c906108c | 1732 | |
192b62ce TT |
1733 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (name, gnutarget, desc)); |
1734 | if (sym_bfd == NULL) | |
faab9922 JK |
1735 | error (_("`%s': can't open to read symbols: %s."), name, |
1736 | bfd_errmsg (bfd_get_error ())); | |
97a41605 | 1737 | |
192b62ce TT |
1738 | if (!gdb_bfd_has_target_filename (sym_bfd.get ())) |
1739 | bfd_set_cacheable (sym_bfd.get (), 1); | |
c906108c | 1740 | |
192b62ce TT |
1741 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
1742 | error (_("`%s': can't read symbols: %s."), name, | |
1743 | bfd_errmsg (bfd_get_error ())); | |
cb2f3a29 | 1744 | |
faab9922 JK |
1745 | do_cleanups (back_to); |
1746 | ||
cb2f3a29 | 1747 | return sym_bfd; |
c906108c SS |
1748 | } |
1749 | ||
cb2f3a29 MK |
1750 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1751 | the section was not found. */ | |
1752 | ||
0e931cf0 | 1753 | int |
a121b7c1 | 1754 | get_section_index (struct objfile *objfile, const char *section_name) |
0e931cf0 JB |
1755 | { |
1756 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1757 | |
0e931cf0 JB |
1758 | if (sect) |
1759 | return sect->index; | |
1760 | else | |
1761 | return -1; | |
1762 | } | |
1763 | ||
c256e171 DE |
1764 | /* Link SF into the global symtab_fns list. |
1765 | FLAVOUR is the file format that SF handles. | |
1766 | Called on startup by the _initialize routine in each object file format | |
1767 | reader, to register information about each format the reader is prepared | |
1768 | to handle. */ | |
c906108c SS |
1769 | |
1770 | void | |
c256e171 | 1771 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1772 | { |
905014d7 | 1773 | symtab_fns.emplace_back (flavour, sf); |
c906108c SS |
1774 | } |
1775 | ||
cb2f3a29 MK |
1776 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1777 | either returns or calls error(). The result is an initialized | |
1778 | struct sym_fns in the objfile structure, that contains cached | |
1779 | information about the symbol file. */ | |
c906108c | 1780 | |
00b5771c | 1781 | static const struct sym_fns * |
31d99776 | 1782 | find_sym_fns (bfd *abfd) |
c906108c | 1783 | { |
31d99776 | 1784 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1785 | |
75245b24 MS |
1786 | if (our_flavour == bfd_target_srec_flavour |
1787 | || our_flavour == bfd_target_ihex_flavour | |
1788 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1789 | return NULL; /* No symbols. */ |
75245b24 | 1790 | |
905014d7 SM |
1791 | for (const registered_sym_fns &rsf : symtab_fns) |
1792 | if (our_flavour == rsf.sym_flavour) | |
1793 | return rsf.sym_fns; | |
cb2f3a29 | 1794 | |
8a3fe4f8 | 1795 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1796 | bfd_get_target (abfd)); |
c906108c SS |
1797 | } |
1798 | \f | |
cb2f3a29 | 1799 | |
c906108c SS |
1800 | /* This function runs the load command of our current target. */ |
1801 | ||
1802 | static void | |
fba45db2 | 1803 | load_command (char *arg, int from_tty) |
c906108c | 1804 | { |
5b3fca71 TT |
1805 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
1806 | ||
e5cc9f32 JB |
1807 | dont_repeat (); |
1808 | ||
4487aabf PA |
1809 | /* The user might be reloading because the binary has changed. Take |
1810 | this opportunity to check. */ | |
1811 | reopen_exec_file (); | |
1812 | reread_symbols (); | |
1813 | ||
c906108c | 1814 | if (arg == NULL) |
1986bccd AS |
1815 | { |
1816 | char *parg; | |
1817 | int count = 0; | |
1818 | ||
1819 | parg = arg = get_exec_file (1); | |
1820 | ||
1821 | /* Count how many \ " ' tab space there are in the name. */ | |
1822 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1823 | { | |
1824 | parg++; | |
1825 | count++; | |
1826 | } | |
1827 | ||
1828 | if (count) | |
1829 | { | |
1830 | /* We need to quote this string so buildargv can pull it apart. */ | |
224c3ddb | 1831 | char *temp = (char *) xmalloc (strlen (arg) + count + 1 ); |
1986bccd AS |
1832 | char *ptemp = temp; |
1833 | char *prev; | |
1834 | ||
1835 | make_cleanup (xfree, temp); | |
1836 | ||
1837 | prev = parg = arg; | |
1838 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1839 | { | |
1840 | strncpy (ptemp, prev, parg - prev); | |
1841 | ptemp += parg - prev; | |
1842 | prev = parg++; | |
1843 | *ptemp++ = '\\'; | |
1844 | } | |
1845 | strcpy (ptemp, prev); | |
1846 | ||
1847 | arg = temp; | |
1848 | } | |
1849 | } | |
1850 | ||
c906108c | 1851 | target_load (arg, from_tty); |
2889e661 JB |
1852 | |
1853 | /* After re-loading the executable, we don't really know which | |
1854 | overlays are mapped any more. */ | |
1855 | overlay_cache_invalid = 1; | |
5b3fca71 TT |
1856 | |
1857 | do_cleanups (cleanup); | |
c906108c SS |
1858 | } |
1859 | ||
1860 | /* This version of "load" should be usable for any target. Currently | |
1861 | it is just used for remote targets, not inftarg.c or core files, | |
1862 | on the theory that only in that case is it useful. | |
1863 | ||
1864 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1865 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1866 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1867 | performance compares. */ | |
917317f4 | 1868 | |
917317f4 JM |
1869 | static int validate_download = 0; |
1870 | ||
e4f9b4d5 MS |
1871 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1872 | ||
1873 | static void | |
1874 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1875 | { | |
19ba03f4 | 1876 | bfd_size_type *sum = (bfd_size_type *) data; |
e4f9b4d5 | 1877 | |
2c500098 | 1878 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1879 | } |
1880 | ||
1881 | /* Opaque data for load_section_callback. */ | |
1882 | struct load_section_data { | |
f698ca8e | 1883 | CORE_ADDR load_offset; |
a76d924d DJ |
1884 | struct load_progress_data *progress_data; |
1885 | VEC(memory_write_request_s) *requests; | |
1886 | }; | |
1887 | ||
1888 | /* Opaque data for load_progress. */ | |
1889 | struct load_progress_data { | |
1890 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1891 | unsigned long write_count; |
1892 | unsigned long data_count; | |
1893 | bfd_size_type total_size; | |
a76d924d DJ |
1894 | }; |
1895 | ||
1896 | /* Opaque data for load_progress for a single section. */ | |
1897 | struct load_progress_section_data { | |
1898 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1899 | |
a76d924d | 1900 | /* Per-section data. */ |
cf7a04e8 DJ |
1901 | const char *section_name; |
1902 | ULONGEST section_sent; | |
1903 | ULONGEST section_size; | |
1904 | CORE_ADDR lma; | |
1905 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1906 | }; |
1907 | ||
a76d924d | 1908 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1909 | |
1910 | static void | |
1911 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1912 | { | |
19ba03f4 SM |
1913 | struct load_progress_section_data *args |
1914 | = (struct load_progress_section_data *) untyped_arg; | |
a76d924d DJ |
1915 | struct load_progress_data *totals; |
1916 | ||
1917 | if (args == NULL) | |
1918 | /* Writing padding data. No easy way to get at the cumulative | |
1919 | stats, so just ignore this. */ | |
1920 | return; | |
1921 | ||
1922 | totals = args->cumulative; | |
1923 | ||
1924 | if (bytes == 0 && args->section_sent == 0) | |
1925 | { | |
1926 | /* The write is just starting. Let the user know we've started | |
1927 | this section. */ | |
112e8700 SM |
1928 | current_uiout->message ("Loading section %s, size %s lma %s\n", |
1929 | args->section_name, | |
1930 | hex_string (args->section_size), | |
1931 | paddress (target_gdbarch (), args->lma)); | |
a76d924d DJ |
1932 | return; |
1933 | } | |
cf7a04e8 DJ |
1934 | |
1935 | if (validate_download) | |
1936 | { | |
1937 | /* Broken memories and broken monitors manifest themselves here | |
1938 | when bring new computers to life. This doubles already slow | |
1939 | downloads. */ | |
1940 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1941 | might add a verify_memory() method to the target vector and | |
1942 | then use that. remote.c could implement that method using | |
1943 | the ``qCRC'' packet. */ | |
0efef640 | 1944 | gdb::byte_vector check (bytes); |
cf7a04e8 | 1945 | |
0efef640 | 1946 | if (target_read_memory (args->lma, check.data (), bytes) != 0) |
5af949e3 | 1947 | error (_("Download verify read failed at %s"), |
f5656ead | 1948 | paddress (target_gdbarch (), args->lma)); |
0efef640 | 1949 | if (memcmp (args->buffer, check.data (), bytes) != 0) |
5af949e3 | 1950 | error (_("Download verify compare failed at %s"), |
f5656ead | 1951 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1952 | } |
a76d924d | 1953 | totals->data_count += bytes; |
cf7a04e8 DJ |
1954 | args->lma += bytes; |
1955 | args->buffer += bytes; | |
a76d924d | 1956 | totals->write_count += 1; |
cf7a04e8 | 1957 | args->section_sent += bytes; |
522002f9 | 1958 | if (check_quit_flag () |
cf7a04e8 DJ |
1959 | || (deprecated_ui_load_progress_hook != NULL |
1960 | && deprecated_ui_load_progress_hook (args->section_name, | |
1961 | args->section_sent))) | |
1962 | error (_("Canceled the download")); | |
1963 | ||
1964 | if (deprecated_show_load_progress != NULL) | |
1965 | deprecated_show_load_progress (args->section_name, | |
1966 | args->section_sent, | |
1967 | args->section_size, | |
a76d924d DJ |
1968 | totals->data_count, |
1969 | totals->total_size); | |
cf7a04e8 DJ |
1970 | } |
1971 | ||
e4f9b4d5 MS |
1972 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1973 | ||
1974 | static void | |
1975 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1976 | { | |
a76d924d | 1977 | struct memory_write_request *new_request; |
19ba03f4 | 1978 | struct load_section_data *args = (struct load_section_data *) data; |
a76d924d | 1979 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1980 | bfd_size_type size = bfd_get_section_size (asec); |
1981 | gdb_byte *buffer; | |
cf7a04e8 | 1982 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1983 | |
cf7a04e8 DJ |
1984 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1985 | return; | |
e4f9b4d5 | 1986 | |
cf7a04e8 DJ |
1987 | if (size == 0) |
1988 | return; | |
e4f9b4d5 | 1989 | |
a76d924d DJ |
1990 | new_request = VEC_safe_push (memory_write_request_s, |
1991 | args->requests, NULL); | |
1992 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
8d749320 | 1993 | section_data = XCNEW (struct load_progress_section_data); |
a76d924d | 1994 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; |
3e43a32a MS |
1995 | new_request->end = new_request->begin + size; /* FIXME Should size |
1996 | be in instead? */ | |
224c3ddb | 1997 | new_request->data = (gdb_byte *) xmalloc (size); |
a76d924d | 1998 | new_request->baton = section_data; |
cf7a04e8 | 1999 | |
a76d924d | 2000 | buffer = new_request->data; |
cf7a04e8 | 2001 | |
a76d924d DJ |
2002 | section_data->cumulative = args->progress_data; |
2003 | section_data->section_name = sect_name; | |
2004 | section_data->section_size = size; | |
2005 | section_data->lma = new_request->begin; | |
2006 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
2007 | |
2008 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
2009 | } |
2010 | ||
2011 | /* Clean up an entire memory request vector, including load | |
2012 | data and progress records. */ | |
cf7a04e8 | 2013 | |
a76d924d DJ |
2014 | static void |
2015 | clear_memory_write_data (void *arg) | |
2016 | { | |
19ba03f4 | 2017 | VEC(memory_write_request_s) **vec_p = (VEC(memory_write_request_s) **) arg; |
a76d924d DJ |
2018 | VEC(memory_write_request_s) *vec = *vec_p; |
2019 | int i; | |
2020 | struct memory_write_request *mr; | |
cf7a04e8 | 2021 | |
a76d924d DJ |
2022 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
2023 | { | |
2024 | xfree (mr->data); | |
2025 | xfree (mr->baton); | |
2026 | } | |
2027 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
2028 | } |
2029 | ||
dcb07cfa PA |
2030 | static void print_transfer_performance (struct ui_file *stream, |
2031 | unsigned long data_count, | |
2032 | unsigned long write_count, | |
2033 | std::chrono::steady_clock::duration d); | |
2034 | ||
c906108c | 2035 | void |
9cbe5fff | 2036 | generic_load (const char *args, int from_tty) |
c906108c | 2037 | { |
773a1edc | 2038 | struct cleanup *old_cleanups; |
e4f9b4d5 | 2039 | struct load_section_data cbdata; |
a76d924d | 2040 | struct load_progress_data total_progress; |
79a45e25 | 2041 | struct ui_out *uiout = current_uiout; |
a76d924d | 2042 | |
e4f9b4d5 MS |
2043 | CORE_ADDR entry; |
2044 | ||
a76d924d DJ |
2045 | memset (&cbdata, 0, sizeof (cbdata)); |
2046 | memset (&total_progress, 0, sizeof (total_progress)); | |
2047 | cbdata.progress_data = &total_progress; | |
2048 | ||
773a1edc | 2049 | old_cleanups = make_cleanup (clear_memory_write_data, &cbdata.requests); |
917317f4 | 2050 | |
d1a41061 PP |
2051 | if (args == NULL) |
2052 | error_no_arg (_("file to load")); | |
1986bccd | 2053 | |
773a1edc | 2054 | gdb_argv argv (args); |
1986bccd | 2055 | |
ee0c3293 | 2056 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
1986bccd AS |
2057 | |
2058 | if (argv[1] != NULL) | |
917317f4 | 2059 | { |
f698ca8e | 2060 | const char *endptr; |
ba5f2f8a | 2061 | |
f698ca8e | 2062 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2063 | |
2064 | /* If the last word was not a valid number then | |
2065 | treat it as a file name with spaces in. */ | |
2066 | if (argv[1] == endptr) | |
2067 | error (_("Invalid download offset:%s."), argv[1]); | |
2068 | ||
2069 | if (argv[2] != NULL) | |
2070 | error (_("Too many parameters.")); | |
917317f4 | 2071 | } |
c906108c | 2072 | |
c378eb4e | 2073 | /* Open the file for loading. */ |
ee0c3293 | 2074 | gdb_bfd_ref_ptr loadfile_bfd (gdb_bfd_open (filename.get (), gnutarget, -1)); |
c906108c | 2075 | if (loadfile_bfd == NULL) |
ee0c3293 | 2076 | perror_with_name (filename.get ()); |
917317f4 | 2077 | |
192b62ce | 2078 | if (!bfd_check_format (loadfile_bfd.get (), bfd_object)) |
c906108c | 2079 | { |
ee0c3293 | 2080 | error (_("\"%s\" is not an object file: %s"), filename.get (), |
c906108c SS |
2081 | bfd_errmsg (bfd_get_error ())); |
2082 | } | |
c5aa993b | 2083 | |
192b62ce | 2084 | bfd_map_over_sections (loadfile_bfd.get (), add_section_size_callback, |
a76d924d DJ |
2085 | (void *) &total_progress.total_size); |
2086 | ||
192b62ce | 2087 | bfd_map_over_sections (loadfile_bfd.get (), load_section_callback, &cbdata); |
c2d11a7d | 2088 | |
dcb07cfa PA |
2089 | using namespace std::chrono; |
2090 | ||
2091 | steady_clock::time_point start_time = steady_clock::now (); | |
c906108c | 2092 | |
a76d924d DJ |
2093 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2094 | load_progress) != 0) | |
2095 | error (_("Load failed")); | |
c906108c | 2096 | |
dcb07cfa | 2097 | steady_clock::time_point end_time = steady_clock::now (); |
ba5f2f8a | 2098 | |
192b62ce | 2099 | entry = bfd_get_start_address (loadfile_bfd.get ()); |
8c2b9656 | 2100 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
112e8700 SM |
2101 | uiout->text ("Start address "); |
2102 | uiout->field_fmt ("address", "%s", paddress (target_gdbarch (), entry)); | |
2103 | uiout->text (", load size "); | |
2104 | uiout->field_fmt ("load-size", "%lu", total_progress.data_count); | |
2105 | uiout->text ("\n"); | |
fb14de7b | 2106 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2107 | |
38963c97 DJ |
2108 | /* Reset breakpoints, now that we have changed the load image. For |
2109 | instance, breakpoints may have been set (or reset, by | |
2110 | post_create_inferior) while connected to the target but before we | |
2111 | loaded the program. In that case, the prologue analyzer could | |
2112 | have read instructions from the target to find the right | |
2113 | breakpoint locations. Loading has changed the contents of that | |
2114 | memory. */ | |
2115 | ||
2116 | breakpoint_re_set (); | |
2117 | ||
a76d924d DJ |
2118 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2119 | total_progress.write_count, | |
dcb07cfa | 2120 | end_time - start_time); |
c906108c SS |
2121 | |
2122 | do_cleanups (old_cleanups); | |
2123 | } | |
2124 | ||
dcb07cfa PA |
2125 | /* Report on STREAM the performance of a memory transfer operation, |
2126 | such as 'load'. DATA_COUNT is the number of bytes transferred. | |
2127 | WRITE_COUNT is the number of separate write operations, or 0, if | |
2128 | that information is not available. TIME is how long the operation | |
2129 | lasted. */ | |
c906108c | 2130 | |
dcb07cfa | 2131 | static void |
d9fcf2fb | 2132 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2133 | unsigned long data_count, |
2134 | unsigned long write_count, | |
dcb07cfa | 2135 | std::chrono::steady_clock::duration time) |
917317f4 | 2136 | { |
dcb07cfa | 2137 | using namespace std::chrono; |
79a45e25 | 2138 | struct ui_out *uiout = current_uiout; |
2b71414d | 2139 | |
dcb07cfa | 2140 | milliseconds ms = duration_cast<milliseconds> (time); |
2b71414d | 2141 | |
112e8700 | 2142 | uiout->text ("Transfer rate: "); |
dcb07cfa | 2143 | if (ms.count () > 0) |
8b93c638 | 2144 | { |
dcb07cfa | 2145 | unsigned long rate = ((ULONGEST) data_count * 1000) / ms.count (); |
9f43d28c | 2146 | |
112e8700 | 2147 | if (uiout->is_mi_like_p ()) |
9f43d28c | 2148 | { |
112e8700 SM |
2149 | uiout->field_fmt ("transfer-rate", "%lu", rate * 8); |
2150 | uiout->text (" bits/sec"); | |
9f43d28c DJ |
2151 | } |
2152 | else if (rate < 1024) | |
2153 | { | |
112e8700 SM |
2154 | uiout->field_fmt ("transfer-rate", "%lu", rate); |
2155 | uiout->text (" bytes/sec"); | |
9f43d28c DJ |
2156 | } |
2157 | else | |
2158 | { | |
112e8700 SM |
2159 | uiout->field_fmt ("transfer-rate", "%lu", rate / 1024); |
2160 | uiout->text (" KB/sec"); | |
9f43d28c | 2161 | } |
8b93c638 JM |
2162 | } |
2163 | else | |
2164 | { | |
112e8700 SM |
2165 | uiout->field_fmt ("transferred-bits", "%lu", (data_count * 8)); |
2166 | uiout->text (" bits in <1 sec"); | |
8b93c638 JM |
2167 | } |
2168 | if (write_count > 0) | |
2169 | { | |
112e8700 SM |
2170 | uiout->text (", "); |
2171 | uiout->field_fmt ("write-rate", "%lu", data_count / write_count); | |
2172 | uiout->text (" bytes/write"); | |
8b93c638 | 2173 | } |
112e8700 | 2174 | uiout->text (".\n"); |
c906108c SS |
2175 | } |
2176 | ||
2177 | /* This function allows the addition of incrementally linked object files. | |
2178 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2179 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2180 | special case syntax for the rombug target (Rombug is the boot | |
2181 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2182 | rombug case, the user doesn't need to supply a text address, | |
2183 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2184 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2185 | |
c906108c | 2186 | static void |
2cf311eb | 2187 | add_symbol_file_command (const char *args, int from_tty) |
c906108c | 2188 | { |
5af949e3 | 2189 | struct gdbarch *gdbarch = get_current_arch (); |
ee0c3293 | 2190 | gdb::unique_xmalloc_ptr<char> filename; |
c906108c | 2191 | char *arg; |
2acceee2 JM |
2192 | int argcnt = 0; |
2193 | int sec_num = 0; | |
db162d44 EZ |
2194 | int expecting_sec_name = 0; |
2195 | int expecting_sec_addr = 0; | |
76ad5e1e | 2196 | struct objfile *objf; |
b15cc25c PA |
2197 | objfile_flags flags = OBJF_USERLOADED | OBJF_SHARED; |
2198 | symfile_add_flags add_flags = 0; | |
2199 | ||
2200 | if (from_tty) | |
2201 | add_flags |= SYMFILE_VERBOSE; | |
db162d44 | 2202 | |
a39a16c4 | 2203 | struct sect_opt |
2acceee2 | 2204 | { |
a121b7c1 PA |
2205 | const char *name; |
2206 | const char *value; | |
a39a16c4 | 2207 | }; |
db162d44 | 2208 | |
a39a16c4 | 2209 | struct section_addr_info *section_addrs; |
f978cb06 | 2210 | std::vector<sect_opt> sect_opts; |
3017564a | 2211 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2212 | |
c906108c SS |
2213 | dont_repeat (); |
2214 | ||
2215 | if (args == NULL) | |
8a3fe4f8 | 2216 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2217 | |
773a1edc | 2218 | gdb_argv argv (args); |
db162d44 | 2219 | |
5b96932b AS |
2220 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2221 | { | |
c378eb4e | 2222 | /* Process the argument. */ |
db162d44 | 2223 | if (argcnt == 0) |
c906108c | 2224 | { |
c378eb4e | 2225 | /* The first argument is the file name. */ |
ee0c3293 | 2226 | filename.reset (tilde_expand (arg)); |
c906108c | 2227 | } |
41dc8db8 MB |
2228 | else if (argcnt == 1) |
2229 | { | |
2230 | /* The second argument is always the text address at which | |
2231 | to load the program. */ | |
f978cb06 TT |
2232 | sect_opt sect = { ".text", arg }; |
2233 | sect_opts.push_back (sect); | |
41dc8db8 | 2234 | } |
db162d44 | 2235 | else |
41dc8db8 MB |
2236 | { |
2237 | /* It's an option (starting with '-') or it's an argument | |
2238 | to an option. */ | |
41dc8db8 MB |
2239 | if (expecting_sec_name) |
2240 | { | |
f978cb06 TT |
2241 | sect_opt sect = { arg, NULL }; |
2242 | sect_opts.push_back (sect); | |
41dc8db8 MB |
2243 | expecting_sec_name = 0; |
2244 | } | |
2245 | else if (expecting_sec_addr) | |
2246 | { | |
f978cb06 | 2247 | sect_opts.back ().value = arg; |
41dc8db8 | 2248 | expecting_sec_addr = 0; |
41dc8db8 MB |
2249 | } |
2250 | else if (strcmp (arg, "-readnow") == 0) | |
2251 | flags |= OBJF_READNOW; | |
2252 | else if (strcmp (arg, "-s") == 0) | |
2253 | { | |
2254 | expecting_sec_name = 1; | |
2255 | expecting_sec_addr = 1; | |
2256 | } | |
2257 | else | |
2258 | error (_("USAGE: add-symbol-file <filename> <textaddress>" | |
2259 | " [-readnow] [-s <secname> <addr>]*")); | |
2260 | } | |
c906108c | 2261 | } |
c906108c | 2262 | |
927890d0 JB |
2263 | /* This command takes at least two arguments. The first one is a |
2264 | filename, and the second is the address where this file has been | |
2265 | loaded. Abort now if this address hasn't been provided by the | |
2266 | user. */ | |
f978cb06 | 2267 | if (sect_opts.empty ()) |
ee0c3293 TT |
2268 | error (_("The address where %s has been loaded is missing"), |
2269 | filename.get ()); | |
927890d0 | 2270 | |
c378eb4e | 2271 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2272 | a sect_addr_info structure to be passed around to other |
2273 | functions. We have to split this up into separate print | |
bb599908 | 2274 | statements because hex_string returns a local static |
c378eb4e | 2275 | string. */ |
5417f6dc | 2276 | |
ee0c3293 TT |
2277 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), |
2278 | filename.get ()); | |
f978cb06 | 2279 | section_addrs = alloc_section_addr_info (sect_opts.size ()); |
a39a16c4 | 2280 | make_cleanup (xfree, section_addrs); |
f978cb06 | 2281 | for (sect_opt § : sect_opts) |
c906108c | 2282 | { |
db162d44 | 2283 | CORE_ADDR addr; |
f978cb06 TT |
2284 | const char *val = sect.value; |
2285 | const char *sec = sect.name; | |
5417f6dc | 2286 | |
ae822768 | 2287 | addr = parse_and_eval_address (val); |
db162d44 | 2288 | |
db162d44 | 2289 | /* Here we store the section offsets in the order they were |
c378eb4e | 2290 | entered on the command line. */ |
a121b7c1 | 2291 | section_addrs->other[sec_num].name = (char *) sec; |
a39a16c4 | 2292 | section_addrs->other[sec_num].addr = addr; |
5af949e3 UW |
2293 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2294 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2295 | sec_num++; |
2296 | ||
5417f6dc | 2297 | /* The object's sections are initialized when a |
db162d44 | 2298 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2299 | This happens in reread_symbols. |
db162d44 EZ |
2300 | At this point, we don't know what file type this is, |
2301 | so we can't determine what section names are valid. */ | |
2acceee2 | 2302 | } |
d76488d8 | 2303 | section_addrs->num_sections = sec_num; |
db162d44 | 2304 | |
2acceee2 | 2305 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2306 | error (_("Not confirmed.")); |
c906108c | 2307 | |
ee0c3293 | 2308 | objf = symbol_file_add (filename.get (), add_flags, section_addrs, flags); |
76ad5e1e NB |
2309 | |
2310 | add_target_sections_of_objfile (objf); | |
c906108c SS |
2311 | |
2312 | /* Getting new symbols may change our opinion about what is | |
2313 | frameless. */ | |
2314 | reinit_frame_cache (); | |
db162d44 | 2315 | do_cleanups (my_cleanups); |
c906108c SS |
2316 | } |
2317 | \f | |
70992597 | 2318 | |
63644780 NB |
2319 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2320 | ||
2321 | static void | |
2cf311eb | 2322 | remove_symbol_file_command (const char *args, int from_tty) |
63644780 | 2323 | { |
63644780 | 2324 | struct objfile *objf = NULL; |
63644780 | 2325 | struct program_space *pspace = current_program_space; |
63644780 NB |
2326 | |
2327 | dont_repeat (); | |
2328 | ||
2329 | if (args == NULL) | |
2330 | error (_("remove-symbol-file: no symbol file provided")); | |
2331 | ||
773a1edc | 2332 | gdb_argv argv (args); |
63644780 NB |
2333 | |
2334 | if (strcmp (argv[0], "-a") == 0) | |
2335 | { | |
2336 | /* Interpret the next argument as an address. */ | |
2337 | CORE_ADDR addr; | |
2338 | ||
2339 | if (argv[1] == NULL) | |
2340 | error (_("Missing address argument")); | |
2341 | ||
2342 | if (argv[2] != NULL) | |
2343 | error (_("Junk after %s"), argv[1]); | |
2344 | ||
2345 | addr = parse_and_eval_address (argv[1]); | |
2346 | ||
2347 | ALL_OBJFILES (objf) | |
2348 | { | |
d03de421 PA |
2349 | if ((objf->flags & OBJF_USERLOADED) != 0 |
2350 | && (objf->flags & OBJF_SHARED) != 0 | |
63644780 NB |
2351 | && objf->pspace == pspace && is_addr_in_objfile (addr, objf)) |
2352 | break; | |
2353 | } | |
2354 | } | |
2355 | else if (argv[0] != NULL) | |
2356 | { | |
2357 | /* Interpret the current argument as a file name. */ | |
63644780 NB |
2358 | |
2359 | if (argv[1] != NULL) | |
2360 | error (_("Junk after %s"), argv[0]); | |
2361 | ||
ee0c3293 | 2362 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
63644780 NB |
2363 | |
2364 | ALL_OBJFILES (objf) | |
2365 | { | |
d03de421 PA |
2366 | if ((objf->flags & OBJF_USERLOADED) != 0 |
2367 | && (objf->flags & OBJF_SHARED) != 0 | |
63644780 | 2368 | && objf->pspace == pspace |
ee0c3293 | 2369 | && filename_cmp (filename.get (), objfile_name (objf)) == 0) |
63644780 NB |
2370 | break; |
2371 | } | |
2372 | } | |
2373 | ||
2374 | if (objf == NULL) | |
2375 | error (_("No symbol file found")); | |
2376 | ||
2377 | if (from_tty | |
2378 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2379 | objfile_name (objf))) | |
2380 | error (_("Not confirmed.")); | |
2381 | ||
2382 | free_objfile (objf); | |
2383 | clear_symtab_users (0); | |
63644780 NB |
2384 | } |
2385 | ||
c906108c | 2386 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2387 | |
c906108c | 2388 | void |
fba45db2 | 2389 | reread_symbols (void) |
c906108c SS |
2390 | { |
2391 | struct objfile *objfile; | |
2392 | long new_modtime; | |
c906108c SS |
2393 | struct stat new_statbuf; |
2394 | int res; | |
4c404b8b | 2395 | std::vector<struct objfile *> new_objfiles; |
c906108c SS |
2396 | |
2397 | /* With the addition of shared libraries, this should be modified, | |
2398 | the load time should be saved in the partial symbol tables, since | |
2399 | different tables may come from different source files. FIXME. | |
2400 | This routine should then walk down each partial symbol table | |
c378eb4e | 2401 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2402 | |
c5aa993b JM |
2403 | for (objfile = object_files; objfile; objfile = objfile->next) |
2404 | { | |
9cce227f TG |
2405 | if (objfile->obfd == NULL) |
2406 | continue; | |
2407 | ||
2408 | /* Separate debug objfiles are handled in the main objfile. */ | |
2409 | if (objfile->separate_debug_objfile_backlink) | |
2410 | continue; | |
2411 | ||
02aeec7b JB |
2412 | /* If this object is from an archive (what you usually create with |
2413 | `ar', often called a `static library' on most systems, though | |
2414 | a `shared library' on AIX is also an archive), then you should | |
2415 | stat on the archive name, not member name. */ | |
9cce227f TG |
2416 | if (objfile->obfd->my_archive) |
2417 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2418 | else | |
4262abfb | 2419 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2420 | if (res != 0) |
2421 | { | |
c378eb4e | 2422 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
9cce227f | 2423 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
4262abfb | 2424 | objfile_name (objfile)); |
9cce227f TG |
2425 | continue; |
2426 | } | |
2427 | new_modtime = new_statbuf.st_mtime; | |
2428 | if (new_modtime != objfile->mtime) | |
2429 | { | |
2430 | struct cleanup *old_cleanups; | |
2431 | struct section_offsets *offsets; | |
2432 | int num_offsets; | |
24ba069a | 2433 | char *original_name; |
9cce227f TG |
2434 | |
2435 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
4262abfb | 2436 | objfile_name (objfile)); |
9cce227f TG |
2437 | |
2438 | /* There are various functions like symbol_file_add, | |
2439 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2440 | appear to do what we want. But they have various other | |
2441 | effects which we *don't* want. So we just do stuff | |
2442 | ourselves. We don't worry about mapped files (for one thing, | |
2443 | any mapped file will be out of date). */ | |
2444 | ||
2445 | /* If we get an error, blow away this objfile (not sure if | |
2446 | that is the correct response for things like shared | |
2447 | libraries). */ | |
2448 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2449 | /* We need to do this whenever any symbols go away. */ | |
2450 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2451 | ||
0ba1096a KT |
2452 | if (exec_bfd != NULL |
2453 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2454 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2455 | { |
2456 | /* Reload EXEC_BFD without asking anything. */ | |
2457 | ||
2458 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2459 | } | |
2460 | ||
f6eeced0 JK |
2461 | /* Keep the calls order approx. the same as in free_objfile. */ |
2462 | ||
2463 | /* Free the separate debug objfiles. It will be | |
2464 | automatically recreated by sym_read. */ | |
2465 | free_objfile_separate_debug (objfile); | |
2466 | ||
2467 | /* Remove any references to this objfile in the global | |
2468 | value lists. */ | |
2469 | preserve_values (objfile); | |
2470 | ||
2471 | /* Nuke all the state that we will re-read. Much of the following | |
2472 | code which sets things to NULL really is necessary to tell | |
2473 | other parts of GDB that there is nothing currently there. | |
2474 | ||
2475 | Try to keep the freeing order compatible with free_objfile. */ | |
2476 | ||
2477 | if (objfile->sf != NULL) | |
2478 | { | |
2479 | (*objfile->sf->sym_finish) (objfile); | |
2480 | } | |
2481 | ||
2482 | clear_objfile_data (objfile); | |
2483 | ||
e1507e95 | 2484 | /* Clean up any state BFD has sitting around. */ |
a4453b7e | 2485 | { |
192b62ce | 2486 | gdb_bfd_ref_ptr obfd (objfile->obfd); |
d3846e71 | 2487 | char *obfd_filename; |
a4453b7e TT |
2488 | |
2489 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2490 | /* Open the new BFD before freeing the old one, so that | |
2491 | the filename remains live. */ | |
192b62ce TT |
2492 | gdb_bfd_ref_ptr temp (gdb_bfd_open (obfd_filename, gnutarget, -1)); |
2493 | objfile->obfd = temp.release (); | |
e1507e95 | 2494 | if (objfile->obfd == NULL) |
192b62ce | 2495 | error (_("Can't open %s to read symbols."), obfd_filename); |
a4453b7e TT |
2496 | } |
2497 | ||
24ba069a JK |
2498 | original_name = xstrdup (objfile->original_name); |
2499 | make_cleanup (xfree, original_name); | |
2500 | ||
9cce227f TG |
2501 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2502 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
4262abfb | 2503 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2504 | bfd_errmsg (bfd_get_error ())); |
2505 | ||
2506 | /* Save the offsets, we will nuke them with the rest of the | |
2507 | objfile_obstack. */ | |
2508 | num_offsets = objfile->num_sections; | |
2509 | offsets = ((struct section_offsets *) | |
2510 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2511 | memcpy (offsets, objfile->section_offsets, | |
2512 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2513 | ||
9cce227f TG |
2514 | /* FIXME: Do we have to free a whole linked list, or is this |
2515 | enough? */ | |
2516 | if (objfile->global_psymbols.list) | |
2517 | xfree (objfile->global_psymbols.list); | |
2518 | memset (&objfile->global_psymbols, 0, | |
2519 | sizeof (objfile->global_psymbols)); | |
2520 | if (objfile->static_psymbols.list) | |
2521 | xfree (objfile->static_psymbols.list); | |
2522 | memset (&objfile->static_psymbols, 0, | |
2523 | sizeof (objfile->static_psymbols)); | |
2524 | ||
c378eb4e | 2525 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2526 | psymbol_bcache_free (objfile->psymbol_cache); |
2527 | objfile->psymbol_cache = psymbol_bcache_init (); | |
41664b45 DG |
2528 | |
2529 | /* NB: after this call to obstack_free, objfiles_changed | |
2530 | will need to be called (see discussion below). */ | |
9cce227f TG |
2531 | obstack_free (&objfile->objfile_obstack, 0); |
2532 | objfile->sections = NULL; | |
43f3e411 | 2533 | objfile->compunit_symtabs = NULL; |
9cce227f TG |
2534 | objfile->psymtabs = NULL; |
2535 | objfile->psymtabs_addrmap = NULL; | |
2536 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2537 | objfile->template_symbols = NULL; |
9cce227f | 2538 | |
9cce227f TG |
2539 | /* obstack_init also initializes the obstack so it is |
2540 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2541 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2542 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2543 | |
846060df JB |
2544 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2545 | data on the objfile's obstack (if sharing data across | |
2546 | multiple users is not possible), so it's important to | |
2547 | do it *after* the obstack has been initialized. */ | |
2548 | set_objfile_per_bfd (objfile); | |
2549 | ||
224c3ddb SM |
2550 | objfile->original_name |
2551 | = (char *) obstack_copy0 (&objfile->objfile_obstack, original_name, | |
2552 | strlen (original_name)); | |
24ba069a | 2553 | |
779bd270 DE |
2554 | /* Reset the sym_fns pointer. The ELF reader can change it |
2555 | based on whether .gdb_index is present, and we need it to | |
2556 | start over. PR symtab/15885 */ | |
8fb8eb5c | 2557 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
779bd270 | 2558 | |
d82ea6a8 | 2559 | build_objfile_section_table (objfile); |
9cce227f TG |
2560 | terminate_minimal_symbol_table (objfile); |
2561 | ||
2562 | /* We use the same section offsets as from last time. I'm not | |
2563 | sure whether that is always correct for shared libraries. */ | |
2564 | objfile->section_offsets = (struct section_offsets *) | |
2565 | obstack_alloc (&objfile->objfile_obstack, | |
2566 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2567 | memcpy (objfile->section_offsets, offsets, | |
2568 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2569 | objfile->num_sections = num_offsets; | |
2570 | ||
2571 | /* What the hell is sym_new_init for, anyway? The concept of | |
2572 | distinguishing between the main file and additional files | |
2573 | in this way seems rather dubious. */ | |
2574 | if (objfile == symfile_objfile) | |
c906108c | 2575 | { |
9cce227f | 2576 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2577 | } |
9cce227f TG |
2578 | |
2579 | (*objfile->sf->sym_init) (objfile); | |
2580 | clear_complaints (&symfile_complaints, 1, 1); | |
608e2dbb TT |
2581 | |
2582 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
41664b45 DG |
2583 | |
2584 | /* We are about to read new symbols and potentially also | |
2585 | DWARF information. Some targets may want to pass addresses | |
2586 | read from DWARF DIE's through an adjustment function before | |
2587 | saving them, like MIPS, which may call into | |
2588 | "find_pc_section". When called, that function will make | |
2589 | use of per-objfile program space data. | |
2590 | ||
2591 | Since we discarded our section information above, we have | |
2592 | dangling pointers in the per-objfile program space data | |
2593 | structure. Force GDB to update the section mapping | |
2594 | information by letting it know the objfile has changed, | |
2595 | making the dangling pointers point to correct data | |
2596 | again. */ | |
2597 | ||
2598 | objfiles_changed (); | |
2599 | ||
608e2dbb | 2600 | read_symbols (objfile, 0); |
b11896a5 | 2601 | |
9cce227f | 2602 | if (!objfile_has_symbols (objfile)) |
c906108c | 2603 | { |
9cce227f TG |
2604 | wrap_here (""); |
2605 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2606 | wrap_here (""); | |
c5aa993b | 2607 | } |
9cce227f TG |
2608 | |
2609 | /* We're done reading the symbol file; finish off complaints. */ | |
2610 | clear_complaints (&symfile_complaints, 0, 1); | |
2611 | ||
2612 | /* Getting new symbols may change our opinion about what is | |
2613 | frameless. */ | |
2614 | ||
2615 | reinit_frame_cache (); | |
2616 | ||
2617 | /* Discard cleanups as symbol reading was successful. */ | |
2618 | discard_cleanups (old_cleanups); | |
2619 | ||
2620 | /* If the mtime has changed between the time we set new_modtime | |
2621 | and now, we *want* this to be out of date, so don't call stat | |
2622 | again now. */ | |
2623 | objfile->mtime = new_modtime; | |
9cce227f | 2624 | init_entry_point_info (objfile); |
4ac39b97 | 2625 | |
4c404b8b | 2626 | new_objfiles.push_back (objfile); |
c906108c SS |
2627 | } |
2628 | } | |
c906108c | 2629 | |
4c404b8b | 2630 | if (!new_objfiles.empty ()) |
ea53e89f | 2631 | { |
c1e56572 | 2632 | clear_symtab_users (0); |
4ac39b97 JK |
2633 | |
2634 | /* clear_objfile_data for each objfile was called before freeing it and | |
2635 | observer_notify_new_objfile (NULL) has been called by | |
2636 | clear_symtab_users above. Notify the new files now. */ | |
4c404b8b TT |
2637 | for (auto iter : new_objfiles) |
2638 | observer_notify_new_objfile (iter); | |
4ac39b97 | 2639 | |
ea53e89f JB |
2640 | /* At least one objfile has changed, so we can consider that |
2641 | the executable we're debugging has changed too. */ | |
781b42b0 | 2642 | observer_notify_executable_changed (); |
ea53e89f | 2643 | } |
c906108c | 2644 | } |
c906108c SS |
2645 | \f |
2646 | ||
c5aa993b JM |
2647 | typedef struct |
2648 | { | |
2649 | char *ext; | |
c906108c | 2650 | enum language lang; |
3fcf0b0d TT |
2651 | } filename_language; |
2652 | ||
2653 | DEF_VEC_O (filename_language); | |
c906108c | 2654 | |
3fcf0b0d | 2655 | static VEC (filename_language) *filename_language_table; |
c906108c | 2656 | |
56618e20 TT |
2657 | /* See symfile.h. */ |
2658 | ||
2659 | void | |
2660 | add_filename_language (const char *ext, enum language lang) | |
c906108c | 2661 | { |
3fcf0b0d TT |
2662 | filename_language entry; |
2663 | ||
2664 | entry.ext = xstrdup (ext); | |
2665 | entry.lang = lang; | |
c906108c | 2666 | |
3fcf0b0d | 2667 | VEC_safe_push (filename_language, filename_language_table, &entry); |
c906108c SS |
2668 | } |
2669 | ||
2670 | static char *ext_args; | |
920d2a44 AC |
2671 | static void |
2672 | show_ext_args (struct ui_file *file, int from_tty, | |
2673 | struct cmd_list_element *c, const char *value) | |
2674 | { | |
3e43a32a MS |
2675 | fprintf_filtered (file, |
2676 | _("Mapping between filename extension " | |
2677 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2678 | value); |
2679 | } | |
c906108c SS |
2680 | |
2681 | static void | |
26c41df3 | 2682 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2683 | { |
2684 | int i; | |
2685 | char *cp = ext_args; | |
2686 | enum language lang; | |
3fcf0b0d | 2687 | filename_language *entry; |
c906108c | 2688 | |
c378eb4e | 2689 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2690 | if (*cp != '.') |
8a3fe4f8 | 2691 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2692 | |
2693 | /* Find end of first arg. */ | |
c5aa993b | 2694 | while (*cp && !isspace (*cp)) |
c906108c SS |
2695 | cp++; |
2696 | ||
2697 | if (*cp == '\0') | |
3e43a32a MS |
2698 | error (_("'%s': two arguments required -- " |
2699 | "filename extension and language"), | |
c906108c SS |
2700 | ext_args); |
2701 | ||
c378eb4e | 2702 | /* Null-terminate first arg. */ |
c5aa993b | 2703 | *cp++ = '\0'; |
c906108c SS |
2704 | |
2705 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2706 | cp = skip_spaces (cp); |
c906108c SS |
2707 | |
2708 | if (*cp == '\0') | |
3e43a32a MS |
2709 | error (_("'%s': two arguments required -- " |
2710 | "filename extension and language"), | |
c906108c SS |
2711 | ext_args); |
2712 | ||
2713 | /* Lookup the language from among those we know. */ | |
2714 | lang = language_enum (cp); | |
2715 | ||
2716 | /* Now lookup the filename extension: do we already know it? */ | |
3fcf0b0d TT |
2717 | for (i = 0; |
2718 | VEC_iterate (filename_language, filename_language_table, i, entry); | |
2719 | ++i) | |
2720 | { | |
2721 | if (0 == strcmp (ext_args, entry->ext)) | |
2722 | break; | |
2723 | } | |
c906108c | 2724 | |
3fcf0b0d | 2725 | if (entry == NULL) |
c906108c | 2726 | { |
c378eb4e | 2727 | /* New file extension. */ |
c906108c SS |
2728 | add_filename_language (ext_args, lang); |
2729 | } | |
2730 | else | |
2731 | { | |
c378eb4e | 2732 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2733 | |
2734 | /* if (from_tty) */ | |
2735 | /* query ("Really make files of type %s '%s'?", */ | |
2736 | /* ext_args, language_str (lang)); */ | |
2737 | ||
3fcf0b0d TT |
2738 | xfree (entry->ext); |
2739 | entry->ext = xstrdup (ext_args); | |
2740 | entry->lang = lang; | |
c906108c SS |
2741 | } |
2742 | } | |
2743 | ||
2744 | static void | |
fba45db2 | 2745 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2746 | { |
2747 | int i; | |
3fcf0b0d | 2748 | filename_language *entry; |
c906108c | 2749 | |
a3f17187 | 2750 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c | 2751 | printf_filtered ("\n\n"); |
3fcf0b0d TT |
2752 | for (i = 0; |
2753 | VEC_iterate (filename_language, filename_language_table, i, entry); | |
2754 | ++i) | |
2755 | printf_filtered ("\t%s\t- %s\n", entry->ext, language_str (entry->lang)); | |
c906108c SS |
2756 | } |
2757 | ||
c906108c | 2758 | enum language |
dd786858 | 2759 | deduce_language_from_filename (const char *filename) |
c906108c SS |
2760 | { |
2761 | int i; | |
e6a959d6 | 2762 | const char *cp; |
c906108c SS |
2763 | |
2764 | if (filename != NULL) | |
2765 | if ((cp = strrchr (filename, '.')) != NULL) | |
3fcf0b0d TT |
2766 | { |
2767 | filename_language *entry; | |
2768 | ||
2769 | for (i = 0; | |
2770 | VEC_iterate (filename_language, filename_language_table, i, entry); | |
2771 | ++i) | |
2772 | if (strcmp (cp, entry->ext) == 0) | |
2773 | return entry->lang; | |
2774 | } | |
c906108c SS |
2775 | |
2776 | return language_unknown; | |
2777 | } | |
2778 | \f | |
43f3e411 DE |
2779 | /* Allocate and initialize a new symbol table. |
2780 | CUST is from the result of allocate_compunit_symtab. */ | |
c906108c SS |
2781 | |
2782 | struct symtab * | |
43f3e411 | 2783 | allocate_symtab (struct compunit_symtab *cust, const char *filename) |
c906108c | 2784 | { |
43f3e411 DE |
2785 | struct objfile *objfile = cust->objfile; |
2786 | struct symtab *symtab | |
2787 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symtab); | |
c906108c | 2788 | |
19ba03f4 SM |
2789 | symtab->filename |
2790 | = (const char *) bcache (filename, strlen (filename) + 1, | |
21ea9eec | 2791 | objfile->per_bfd->filename_cache); |
c5aa993b JM |
2792 | symtab->fullname = NULL; |
2793 | symtab->language = deduce_language_from_filename (filename); | |
c906108c | 2794 | |
db0fec5c DE |
2795 | /* This can be very verbose with lots of headers. |
2796 | Only print at higher debug levels. */ | |
2797 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2798 | { |
2799 | /* Be a bit clever with debugging messages, and don't print objfile | |
2800 | every time, only when it changes. */ | |
2801 | static char *last_objfile_name = NULL; | |
2802 | ||
2803 | if (last_objfile_name == NULL | |
4262abfb | 2804 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
45cfd468 DE |
2805 | { |
2806 | xfree (last_objfile_name); | |
4262abfb | 2807 | last_objfile_name = xstrdup (objfile_name (objfile)); |
45cfd468 DE |
2808 | fprintf_unfiltered (gdb_stdlog, |
2809 | "Creating one or more symtabs for objfile %s ...\n", | |
2810 | last_objfile_name); | |
2811 | } | |
2812 | fprintf_unfiltered (gdb_stdlog, | |
b3dbbd6f PM |
2813 | "Created symtab %s for module %s.\n", |
2814 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2815 | } |
2816 | ||
43f3e411 DE |
2817 | /* Add it to CUST's list of symtabs. */ |
2818 | if (cust->filetabs == NULL) | |
2819 | { | |
2820 | cust->filetabs = symtab; | |
2821 | cust->last_filetab = symtab; | |
2822 | } | |
2823 | else | |
2824 | { | |
2825 | cust->last_filetab->next = symtab; | |
2826 | cust->last_filetab = symtab; | |
2827 | } | |
2828 | ||
2829 | /* Backlink to the containing compunit symtab. */ | |
2830 | symtab->compunit_symtab = cust; | |
2831 | ||
2832 | return symtab; | |
2833 | } | |
2834 | ||
2835 | /* Allocate and initialize a new compunit. | |
2836 | NAME is the name of the main source file, if there is one, or some | |
2837 | descriptive text if there are no source files. */ | |
2838 | ||
2839 | struct compunit_symtab * | |
2840 | allocate_compunit_symtab (struct objfile *objfile, const char *name) | |
2841 | { | |
2842 | struct compunit_symtab *cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2843 | struct compunit_symtab); | |
2844 | const char *saved_name; | |
2845 | ||
2846 | cu->objfile = objfile; | |
2847 | ||
2848 | /* The name we record here is only for display/debugging purposes. | |
2849 | Just save the basename to avoid path issues (too long for display, | |
2850 | relative vs absolute, etc.). */ | |
2851 | saved_name = lbasename (name); | |
224c3ddb SM |
2852 | cu->name |
2853 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, saved_name, | |
2854 | strlen (saved_name)); | |
43f3e411 DE |
2855 | |
2856 | COMPUNIT_DEBUGFORMAT (cu) = "unknown"; | |
2857 | ||
2858 | if (symtab_create_debug) | |
2859 | { | |
2860 | fprintf_unfiltered (gdb_stdlog, | |
2861 | "Created compunit symtab %s for %s.\n", | |
2862 | host_address_to_string (cu), | |
2863 | cu->name); | |
2864 | } | |
2865 | ||
2866 | return cu; | |
2867 | } | |
2868 | ||
2869 | /* Hook CU to the objfile it comes from. */ | |
2870 | ||
2871 | void | |
2872 | add_compunit_symtab_to_objfile (struct compunit_symtab *cu) | |
2873 | { | |
2874 | cu->next = cu->objfile->compunit_symtabs; | |
2875 | cu->objfile->compunit_symtabs = cu; | |
c906108c | 2876 | } |
c906108c | 2877 | \f |
c5aa993b | 2878 | |
b15cc25c PA |
2879 | /* Reset all data structures in gdb which may contain references to |
2880 | symbol table data. */ | |
c906108c SS |
2881 | |
2882 | void | |
b15cc25c | 2883 | clear_symtab_users (symfile_add_flags add_flags) |
c906108c SS |
2884 | { |
2885 | /* Someday, we should do better than this, by only blowing away | |
2886 | the things that really need to be blown. */ | |
c0501be5 DJ |
2887 | |
2888 | /* Clear the "current" symtab first, because it is no longer valid. | |
2889 | breakpoint_re_set may try to access the current symtab. */ | |
2890 | clear_current_source_symtab_and_line (); | |
2891 | ||
c906108c | 2892 | clear_displays (); |
1bfeeb0f | 2893 | clear_last_displayed_sal (); |
c906108c | 2894 | clear_pc_function_cache (); |
06d3b283 | 2895 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2896 | |
2897 | /* Clear globals which might have pointed into a removed objfile. | |
2898 | FIXME: It's not clear which of these are supposed to persist | |
2899 | between expressions and which ought to be reset each time. */ | |
2900 | expression_context_block = NULL; | |
2901 | innermost_block = NULL; | |
8756216b DP |
2902 | |
2903 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2904 | varobj_invalidate (); | |
2905 | ||
e700d1b2 JB |
2906 | /* Now that the various caches have been cleared, we can re_set |
2907 | our breakpoints without risking it using stale data. */ | |
2908 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) | |
2909 | breakpoint_re_set (); | |
c906108c SS |
2910 | } |
2911 | ||
74b7792f AC |
2912 | static void |
2913 | clear_symtab_users_cleanup (void *ignore) | |
2914 | { | |
c1e56572 | 2915 | clear_symtab_users (0); |
74b7792f | 2916 | } |
c906108c | 2917 | \f |
c906108c SS |
2918 | /* OVERLAYS: |
2919 | The following code implements an abstraction for debugging overlay sections. | |
2920 | ||
2921 | The target model is as follows: | |
2922 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2923 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2924 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2925 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2926 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2927 | sections should be considered to be mapped from the VMA to the LMA. |
2928 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2929 | For instance, if a section has been mapped then its contents |
c5aa993b | 2930 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2931 | |
2932 | Two levels of debugger support for overlays are available. One is | |
2933 | "manual", in which the debugger relies on the user to tell it which | |
2934 | overlays are currently mapped. This level of support is | |
2935 | implemented entirely in the core debugger, and the information about | |
2936 | whether a section is mapped is kept in the objfile->obj_section table. | |
2937 | ||
2938 | The second level of support is "automatic", and is only available if | |
2939 | the target-specific code provides functionality to read the target's | |
2940 | overlay mapping table, and translate its contents for the debugger | |
2941 | (by updating the mapped state information in the obj_section tables). | |
2942 | ||
2943 | The interface is as follows: | |
c5aa993b JM |
2944 | User commands: |
2945 | overlay map <name> -- tell gdb to consider this section mapped | |
2946 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2947 | overlay list -- list the sections that GDB thinks are mapped | |
2948 | overlay read-target -- get the target's state of what's mapped | |
2949 | overlay off/manual/auto -- set overlay debugging state | |
2950 | Functional interface: | |
2951 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2952 | section, return that section. | |
5417f6dc | 2953 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2954 | the pc, either in its VMA or its LMA |
714835d5 | 2955 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2956 | section_is_overlay(sect): true if section's VMA != LMA |
2957 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2958 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2959 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2960 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2961 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2962 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2963 | either in VMA or LMA depending on whether | |
c378eb4e | 2964 | the symbol's section is currently mapped. */ |
c906108c SS |
2965 | |
2966 | /* Overlay debugging state: */ | |
2967 | ||
d874f1e2 | 2968 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2969 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2970 | |
c906108c | 2971 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2972 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2973 | SECTION is loaded at an address different from where it will "run". */ |
2974 | ||
2975 | int | |
714835d5 | 2976 | section_is_overlay (struct obj_section *section) |
c906108c | 2977 | { |
714835d5 UW |
2978 | if (overlay_debugging && section) |
2979 | { | |
2980 | bfd *abfd = section->objfile->obfd; | |
2981 | asection *bfd_section = section->the_bfd_section; | |
f888f159 | 2982 | |
714835d5 UW |
2983 | if (bfd_section_lma (abfd, bfd_section) != 0 |
2984 | && bfd_section_lma (abfd, bfd_section) | |
2985 | != bfd_section_vma (abfd, bfd_section)) | |
2986 | return 1; | |
2987 | } | |
c906108c SS |
2988 | |
2989 | return 0; | |
2990 | } | |
2991 | ||
2992 | /* Function: overlay_invalidate_all (void) | |
2993 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2994 | ||
2995 | static void | |
fba45db2 | 2996 | overlay_invalidate_all (void) |
c906108c | 2997 | { |
c5aa993b | 2998 | struct objfile *objfile; |
c906108c SS |
2999 | struct obj_section *sect; |
3000 | ||
3001 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
3002 | if (section_is_overlay (sect)) |
3003 | sect->ovly_mapped = -1; | |
c906108c SS |
3004 | } |
3005 | ||
714835d5 | 3006 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 3007 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3008 | |
3009 | Access to the ovly_mapped flag is restricted to this function, so | |
3010 | that we can do automatic update. If the global flag | |
3011 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3012 | overlay_invalidate_all. If the mapped state of the particular | |
3013 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3014 | ||
714835d5 UW |
3015 | int |
3016 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3017 | { |
9216df95 UW |
3018 | struct gdbarch *gdbarch; |
3019 | ||
714835d5 | 3020 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3021 | return 0; |
3022 | ||
c5aa993b | 3023 | switch (overlay_debugging) |
c906108c SS |
3024 | { |
3025 | default: | |
d874f1e2 | 3026 | case ovly_off: |
c5aa993b | 3027 | return 0; /* overlay debugging off */ |
d874f1e2 | 3028 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3029 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3030 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3031 | gdbarch = get_objfile_arch (osect->objfile); |
3032 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3033 | { |
3034 | if (overlay_cache_invalid) | |
3035 | { | |
3036 | overlay_invalidate_all (); | |
3037 | overlay_cache_invalid = 0; | |
3038 | } | |
3039 | if (osect->ovly_mapped == -1) | |
9216df95 | 3040 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
3041 | } |
3042 | /* fall thru to manual case */ | |
d874f1e2 | 3043 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3044 | return osect->ovly_mapped == 1; |
3045 | } | |
3046 | } | |
3047 | ||
c906108c SS |
3048 | /* Function: pc_in_unmapped_range |
3049 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3050 | ||
3051 | CORE_ADDR | |
714835d5 | 3052 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3053 | { |
714835d5 UW |
3054 | if (section_is_overlay (section)) |
3055 | { | |
3056 | bfd *abfd = section->objfile->obfd; | |
3057 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3058 | |
714835d5 UW |
3059 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3060 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3061 | CORE_ADDR offset = obj_section_offset (section); | |
3062 | ||
3063 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3064 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3065 | return 1; | |
3066 | } | |
c906108c | 3067 | |
c906108c SS |
3068 | return 0; |
3069 | } | |
3070 | ||
3071 | /* Function: pc_in_mapped_range | |
3072 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3073 | ||
3074 | CORE_ADDR | |
714835d5 | 3075 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3076 | { |
714835d5 UW |
3077 | if (section_is_overlay (section)) |
3078 | { | |
3079 | if (obj_section_addr (section) <= pc | |
3080 | && pc < obj_section_endaddr (section)) | |
3081 | return 1; | |
3082 | } | |
c906108c | 3083 | |
c906108c SS |
3084 | return 0; |
3085 | } | |
3086 | ||
9ec8e6a0 JB |
3087 | /* Return true if the mapped ranges of sections A and B overlap, false |
3088 | otherwise. */ | |
3b7bacac | 3089 | |
b9362cc7 | 3090 | static int |
714835d5 | 3091 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3092 | { |
714835d5 UW |
3093 | CORE_ADDR a_start = obj_section_addr (a); |
3094 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3095 | CORE_ADDR b_start = obj_section_addr (b); | |
3096 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3097 | |
3098 | return (a_start < b_end && b_start < a_end); | |
3099 | } | |
3100 | ||
c906108c SS |
3101 | /* Function: overlay_unmapped_address (PC, SECTION) |
3102 | Returns the address corresponding to PC in the unmapped (load) range. | |
3103 | May be the same as PC. */ | |
3104 | ||
3105 | CORE_ADDR | |
714835d5 | 3106 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3107 | { |
714835d5 UW |
3108 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3109 | { | |
3110 | bfd *abfd = section->objfile->obfd; | |
3111 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3112 | |
714835d5 UW |
3113 | return pc + bfd_section_lma (abfd, bfd_section) |
3114 | - bfd_section_vma (abfd, bfd_section); | |
3115 | } | |
c906108c SS |
3116 | |
3117 | return pc; | |
3118 | } | |
3119 | ||
3120 | /* Function: overlay_mapped_address (PC, SECTION) | |
3121 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3122 | May be the same as PC. */ | |
3123 | ||
3124 | CORE_ADDR | |
714835d5 | 3125 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3126 | { |
714835d5 UW |
3127 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3128 | { | |
3129 | bfd *abfd = section->objfile->obfd; | |
3130 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3131 | |
714835d5 UW |
3132 | return pc + bfd_section_vma (abfd, bfd_section) |
3133 | - bfd_section_lma (abfd, bfd_section); | |
3134 | } | |
c906108c SS |
3135 | |
3136 | return pc; | |
3137 | } | |
3138 | ||
5417f6dc | 3139 | /* Function: symbol_overlayed_address |
c906108c SS |
3140 | Return one of two addresses (relative to the VMA or to the LMA), |
3141 | depending on whether the section is mapped or not. */ | |
3142 | ||
c5aa993b | 3143 | CORE_ADDR |
714835d5 | 3144 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3145 | { |
3146 | if (overlay_debugging) | |
3147 | { | |
c378eb4e | 3148 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3149 | if (section == 0) |
3150 | return address; | |
c378eb4e MS |
3151 | /* If the symbol's section is not an overlay, just return its |
3152 | address. */ | |
c906108c SS |
3153 | if (!section_is_overlay (section)) |
3154 | return address; | |
c378eb4e | 3155 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3156 | if (section_is_mapped (section)) |
3157 | return address; | |
3158 | /* | |
3159 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3160 | * then return its LOADED address rather than its vma address!! | |
3161 | */ | |
3162 | return overlay_unmapped_address (address, section); | |
3163 | } | |
3164 | return address; | |
3165 | } | |
3166 | ||
5417f6dc | 3167 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3168 | Return the best-match overlay section for PC: |
3169 | If PC matches a mapped overlay section's VMA, return that section. | |
3170 | Else if PC matches an unmapped section's VMA, return that section. | |
3171 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3172 | ||
714835d5 | 3173 | struct obj_section * |
fba45db2 | 3174 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3175 | { |
c5aa993b | 3176 | struct objfile *objfile; |
c906108c SS |
3177 | struct obj_section *osect, *best_match = NULL; |
3178 | ||
3179 | if (overlay_debugging) | |
b631e59b KT |
3180 | { |
3181 | ALL_OBJSECTIONS (objfile, osect) | |
3182 | if (section_is_overlay (osect)) | |
c5aa993b | 3183 | { |
b631e59b KT |
3184 | if (pc_in_mapped_range (pc, osect)) |
3185 | { | |
3186 | if (section_is_mapped (osect)) | |
3187 | return osect; | |
3188 | else | |
3189 | best_match = osect; | |
3190 | } | |
3191 | else if (pc_in_unmapped_range (pc, osect)) | |
c5aa993b JM |
3192 | best_match = osect; |
3193 | } | |
b631e59b | 3194 | } |
714835d5 | 3195 | return best_match; |
c906108c SS |
3196 | } |
3197 | ||
3198 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3199 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3200 | currently marked as MAPPED, return that section. Else return NULL. */ |
3201 | ||
714835d5 | 3202 | struct obj_section * |
fba45db2 | 3203 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3204 | { |
c5aa993b | 3205 | struct objfile *objfile; |
c906108c SS |
3206 | struct obj_section *osect; |
3207 | ||
3208 | if (overlay_debugging) | |
b631e59b KT |
3209 | { |
3210 | ALL_OBJSECTIONS (objfile, osect) | |
3211 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) | |
3212 | return osect; | |
3213 | } | |
c906108c SS |
3214 | |
3215 | return NULL; | |
3216 | } | |
3217 | ||
3218 | /* Function: list_overlays_command | |
c378eb4e | 3219 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3220 | |
5d3055ad | 3221 | static void |
2cf311eb | 3222 | list_overlays_command (const char *args, int from_tty) |
c906108c | 3223 | { |
c5aa993b JM |
3224 | int nmapped = 0; |
3225 | struct objfile *objfile; | |
c906108c SS |
3226 | struct obj_section *osect; |
3227 | ||
3228 | if (overlay_debugging) | |
b631e59b KT |
3229 | { |
3230 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3231 | if (section_is_mapped (osect)) |
b631e59b KT |
3232 | { |
3233 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3234 | const char *name; | |
3235 | bfd_vma lma, vma; | |
3236 | int size; | |
3237 | ||
3238 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3239 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
3240 | size = bfd_get_section_size (osect->the_bfd_section); | |
3241 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
3242 | ||
3243 | printf_filtered ("Section %s, loaded at ", name); | |
3244 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); | |
3245 | puts_filtered (" - "); | |
3246 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); | |
3247 | printf_filtered (", mapped at "); | |
3248 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); | |
3249 | puts_filtered (" - "); | |
3250 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); | |
3251 | puts_filtered ("\n"); | |
3252 | ||
3253 | nmapped++; | |
3254 | } | |
3255 | } | |
c906108c | 3256 | if (nmapped == 0) |
a3f17187 | 3257 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3258 | } |
3259 | ||
3260 | /* Function: map_overlay_command | |
3261 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3262 | ||
5d3055ad | 3263 | static void |
2cf311eb | 3264 | map_overlay_command (const char *args, int from_tty) |
c906108c | 3265 | { |
c5aa993b JM |
3266 | struct objfile *objfile, *objfile2; |
3267 | struct obj_section *sec, *sec2; | |
c906108c SS |
3268 | |
3269 | if (!overlay_debugging) | |
3e43a32a MS |
3270 | error (_("Overlay debugging not enabled. Use " |
3271 | "either the 'overlay auto' or\n" | |
3272 | "the 'overlay manual' command.")); | |
c906108c SS |
3273 | |
3274 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3275 | error (_("Argument required: name of an overlay section")); |
c906108c | 3276 | |
c378eb4e | 3277 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3278 | ALL_OBJSECTIONS (objfile, sec) |
3279 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3280 | { |
c378eb4e | 3281 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3282 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3283 | continue; /* not an overlay section */ |
3284 | ||
c378eb4e | 3285 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3286 | sec->ovly_mapped = 1; |
3287 | ||
3288 | /* Next, make a pass and unmap any sections that are | |
3289 | overlapped by this new section: */ | |
3290 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3291 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3292 | { |
3293 | if (info_verbose) | |
a3f17187 | 3294 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3295 | bfd_section_name (objfile->obfd, |
3296 | sec2->the_bfd_section)); | |
c378eb4e | 3297 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3298 | } |
3299 | return; | |
3300 | } | |
8a3fe4f8 | 3301 | error (_("No overlay section called %s"), args); |
c906108c SS |
3302 | } |
3303 | ||
3304 | /* Function: unmap_overlay_command | |
5417f6dc | 3305 | Mark the overlay section as unmapped |
c906108c SS |
3306 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3307 | ||
5d3055ad | 3308 | static void |
2cf311eb | 3309 | unmap_overlay_command (const char *args, int from_tty) |
c906108c | 3310 | { |
c5aa993b | 3311 | struct objfile *objfile; |
7a270e0c | 3312 | struct obj_section *sec = NULL; |
c906108c SS |
3313 | |
3314 | if (!overlay_debugging) | |
3e43a32a MS |
3315 | error (_("Overlay debugging not enabled. " |
3316 | "Use either the 'overlay auto' or\n" | |
3317 | "the 'overlay manual' command.")); | |
c906108c SS |
3318 | |
3319 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3320 | error (_("Argument required: name of an overlay section")); |
c906108c | 3321 | |
c378eb4e | 3322 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3323 | ALL_OBJSECTIONS (objfile, sec) |
3324 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3325 | { |
3326 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3327 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3328 | sec->ovly_mapped = 0; |
3329 | return; | |
3330 | } | |
8a3fe4f8 | 3331 | error (_("No overlay section called %s"), args); |
c906108c SS |
3332 | } |
3333 | ||
3334 | /* Function: overlay_auto_command | |
3335 | A utility command to turn on overlay debugging. | |
c378eb4e | 3336 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3337 | |
3338 | static void | |
2cf311eb | 3339 | overlay_auto_command (const char *args, int from_tty) |
c906108c | 3340 | { |
d874f1e2 | 3341 | overlay_debugging = ovly_auto; |
1900040c | 3342 | enable_overlay_breakpoints (); |
c906108c | 3343 | if (info_verbose) |
a3f17187 | 3344 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3345 | } |
3346 | ||
3347 | /* Function: overlay_manual_command | |
3348 | A utility command to turn on overlay debugging. | |
c378eb4e | 3349 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3350 | |
3351 | static void | |
2cf311eb | 3352 | overlay_manual_command (const char *args, int from_tty) |
c906108c | 3353 | { |
d874f1e2 | 3354 | overlay_debugging = ovly_on; |
1900040c | 3355 | disable_overlay_breakpoints (); |
c906108c | 3356 | if (info_verbose) |
a3f17187 | 3357 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3358 | } |
3359 | ||
3360 | /* Function: overlay_off_command | |
3361 | A utility command to turn on overlay debugging. | |
c378eb4e | 3362 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3363 | |
3364 | static void | |
2cf311eb | 3365 | overlay_off_command (const char *args, int from_tty) |
c906108c | 3366 | { |
d874f1e2 | 3367 | overlay_debugging = ovly_off; |
1900040c | 3368 | disable_overlay_breakpoints (); |
c906108c | 3369 | if (info_verbose) |
a3f17187 | 3370 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3371 | } |
3372 | ||
3373 | static void | |
2cf311eb | 3374 | overlay_load_command (const char *args, int from_tty) |
c906108c | 3375 | { |
e17c207e UW |
3376 | struct gdbarch *gdbarch = get_current_arch (); |
3377 | ||
3378 | if (gdbarch_overlay_update_p (gdbarch)) | |
3379 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3380 | else |
8a3fe4f8 | 3381 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3382 | } |
3383 | ||
3384 | /* Function: overlay_command | |
c378eb4e | 3385 | A place-holder for a mis-typed command. */ |
c906108c | 3386 | |
c378eb4e | 3387 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3388 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3389 | |
3390 | static void | |
fba45db2 | 3391 | overlay_command (char *args, int from_tty) |
c906108c | 3392 | { |
c5aa993b | 3393 | printf_unfiltered |
c906108c | 3394 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
635c7e8a | 3395 | help_list (overlaylist, "overlay ", all_commands, gdb_stdout); |
c906108c SS |
3396 | } |
3397 | ||
c906108c SS |
3398 | /* Target Overlays for the "Simplest" overlay manager: |
3399 | ||
5417f6dc RM |
3400 | This is GDB's default target overlay layer. It works with the |
3401 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3402 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3403 | so targets that use a different runtime overlay manager can |
c906108c SS |
3404 | substitute their own overlay_update function and take over the |
3405 | function pointer. | |
3406 | ||
3407 | The overlay_update function pokes around in the target's data structures | |
3408 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3409 | this information. | |
3410 | ||
3411 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3412 | unsigned _novlys; /# number of overlay sections #/ |
3413 | unsigned _ovly_table[_novlys][4] = { | |
438e1e42 | 3414 | {VMA, OSIZE, LMA, MAPPED}, /# one entry per overlay section #/ |
c5aa993b JM |
3415 | {..., ..., ..., ...}, |
3416 | } | |
3417 | unsigned _novly_regions; /# number of overlay regions #/ | |
3418 | unsigned _ovly_region_table[_novly_regions][3] = { | |
438e1e42 | 3419 | {VMA, OSIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ |
c5aa993b JM |
3420 | {..., ..., ...}, |
3421 | } | |
c906108c SS |
3422 | These functions will attempt to update GDB's mappedness state in the |
3423 | symbol section table, based on the target's mappedness state. | |
3424 | ||
3425 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3426 | attempt to detect when the cached copy is invalidated. The main | |
3427 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3428 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3429 | the target (whenever possible). */ |
c906108c SS |
3430 | |
3431 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3432 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3433 | static unsigned cache_novlys = 0; |
c906108c | 3434 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3435 | enum ovly_index |
3436 | { | |
438e1e42 | 3437 | VMA, OSIZE, LMA, MAPPED |
c5aa993b | 3438 | }; |
c906108c | 3439 | |
c378eb4e | 3440 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3441 | |
c906108c | 3442 | static void |
fba45db2 | 3443 | simple_free_overlay_table (void) |
c906108c SS |
3444 | { |
3445 | if (cache_ovly_table) | |
b8c9b27d | 3446 | xfree (cache_ovly_table); |
c5aa993b | 3447 | cache_novlys = 0; |
c906108c SS |
3448 | cache_ovly_table = NULL; |
3449 | cache_ovly_table_base = 0; | |
3450 | } | |
3451 | ||
9216df95 | 3452 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3453 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3454 | |
c906108c | 3455 | static void |
9216df95 | 3456 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3457 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3458 | { |
c378eb4e | 3459 | /* FIXME (alloca): Not safe if array is very large. */ |
224c3ddb | 3460 | gdb_byte *buf = (gdb_byte *) alloca (len * size); |
c5aa993b | 3461 | int i; |
c906108c | 3462 | |
9216df95 | 3463 | read_memory (memaddr, buf, len * size); |
c906108c | 3464 | for (i = 0; i < len; i++) |
e17a4113 | 3465 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3466 | } |
3467 | ||
3468 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3469 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3470 | |
c5aa993b | 3471 | static int |
fba45db2 | 3472 | simple_read_overlay_table (void) |
c906108c | 3473 | { |
3b7344d5 | 3474 | struct bound_minimal_symbol novlys_msym; |
7c7b6655 | 3475 | struct bound_minimal_symbol ovly_table_msym; |
9216df95 UW |
3476 | struct gdbarch *gdbarch; |
3477 | int word_size; | |
e17a4113 | 3478 | enum bfd_endian byte_order; |
c906108c SS |
3479 | |
3480 | simple_free_overlay_table (); | |
9b27852e | 3481 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
3b7344d5 | 3482 | if (! novlys_msym.minsym) |
c906108c | 3483 | { |
8a3fe4f8 | 3484 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3485 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3486 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3487 | return 0; |
c906108c | 3488 | } |
0d43edd1 | 3489 | |
7c7b6655 TT |
3490 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3491 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3492 | { |
8a3fe4f8 | 3493 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3494 | "`_ovly_table' array\n" |
8a3fe4f8 | 3495 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3496 | return 0; |
3497 | } | |
3498 | ||
7c7b6655 | 3499 | gdbarch = get_objfile_arch (ovly_table_msym.objfile); |
9216df95 | 3500 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3501 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3502 | |
77e371c0 TT |
3503 | cache_novlys = read_memory_integer (BMSYMBOL_VALUE_ADDRESS (novlys_msym), |
3504 | 4, byte_order); | |
0d43edd1 | 3505 | cache_ovly_table |
224c3ddb | 3506 | = (unsigned int (*)[4]) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); |
77e371c0 | 3507 | cache_ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym); |
0d43edd1 | 3508 | read_target_long_array (cache_ovly_table_base, |
777ea8f1 | 3509 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3510 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3511 | |
c5aa993b | 3512 | return 1; /* SUCCESS */ |
c906108c SS |
3513 | } |
3514 | ||
5417f6dc | 3515 | /* Function: simple_overlay_update_1 |
c906108c SS |
3516 | A helper function for simple_overlay_update. Assuming a cached copy |
3517 | of _ovly_table exists, look through it to find an entry whose vma, | |
3518 | lma and size match those of OSECT. Re-read the entry and make sure | |
3519 | it still matches OSECT (else the table may no longer be valid). | |
3520 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3521 | success, 0 for failure. */ | |
3522 | ||
3523 | static int | |
fba45db2 | 3524 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c | 3525 | { |
764c99c1 | 3526 | int i; |
fbd35540 MS |
3527 | bfd *obfd = osect->objfile->obfd; |
3528 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3529 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3530 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3531 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3532 | |
c906108c | 3533 | for (i = 0; i < cache_novlys; i++) |
fbd35540 | 3534 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3535 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c | 3536 | { |
9216df95 UW |
3537 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3538 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3539 | 4, word_size, byte_order); |
fbd35540 | 3540 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3541 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c SS |
3542 | { |
3543 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3544 | return 1; | |
3545 | } | |
c378eb4e | 3546 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3547 | return 0; |
3548 | } | |
3549 | return 0; | |
3550 | } | |
3551 | ||
3552 | /* Function: simple_overlay_update | |
5417f6dc RM |
3553 | If OSECT is NULL, then update all sections' mapped state |
3554 | (after re-reading the entire target _ovly_table). | |
3555 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3556 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3557 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3558 | re-read the entire cache, and go ahead and update all sections. */ |
3559 | ||
1c772458 | 3560 | void |
fba45db2 | 3561 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3562 | { |
c5aa993b | 3563 | struct objfile *objfile; |
c906108c | 3564 | |
c378eb4e | 3565 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3566 | if (osect) |
c378eb4e | 3567 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3568 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3569 | { |
3570 | /* Does its cached location match what's currently in the | |
3571 | symtab? */ | |
3b7344d5 | 3572 | struct bound_minimal_symbol minsym |
9cc89665 MS |
3573 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
3574 | ||
3b7344d5 | 3575 | if (minsym.minsym == NULL) |
9cc89665 MS |
3576 | error (_("Error reading inferior's overlay table: couldn't " |
3577 | "find `_ovly_table' array\n" | |
3578 | "in inferior. Use `overlay manual' mode.")); | |
3579 | ||
77e371c0 | 3580 | if (cache_ovly_table_base == BMSYMBOL_VALUE_ADDRESS (minsym)) |
9cc89665 MS |
3581 | /* Then go ahead and try to look up this single section in |
3582 | the cache. */ | |
3583 | if (simple_overlay_update_1 (osect)) | |
3584 | /* Found it! We're done. */ | |
3585 | return; | |
3586 | } | |
c906108c SS |
3587 | |
3588 | /* Cached table no good: need to read the entire table anew. | |
3589 | Or else we want all the sections, in which case it's actually | |
3590 | more efficient to read the whole table in one block anyway. */ | |
3591 | ||
0d43edd1 JB |
3592 | if (! simple_read_overlay_table ()) |
3593 | return; | |
3594 | ||
c378eb4e | 3595 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3596 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3597 | if (section_is_overlay (osect)) |
c5aa993b | 3598 | { |
764c99c1 | 3599 | int i; |
fbd35540 MS |
3600 | bfd *obfd = osect->objfile->obfd; |
3601 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3602 | |
c5aa993b | 3603 | for (i = 0; i < cache_novlys; i++) |
fbd35540 | 3604 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3605 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c378eb4e | 3606 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3607 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3608 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3609 | } |
3610 | } | |
c906108c SS |
3611 | } |
3612 | ||
086df311 DJ |
3613 | /* Set the output sections and output offsets for section SECTP in |
3614 | ABFD. The relocation code in BFD will read these offsets, so we | |
3615 | need to be sure they're initialized. We map each section to itself, | |
3616 | with no offset; this means that SECTP->vma will be honored. */ | |
3617 | ||
3618 | static void | |
3619 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3620 | { | |
3621 | sectp->output_section = sectp; | |
3622 | sectp->output_offset = 0; | |
3623 | } | |
3624 | ||
ac8035ab TG |
3625 | /* Default implementation for sym_relocate. */ |
3626 | ||
ac8035ab TG |
3627 | bfd_byte * |
3628 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3629 | bfd_byte *buf) | |
3630 | { | |
3019eac3 DE |
3631 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3632 | DWO file. */ | |
3633 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3634 | |
3635 | /* We're only interested in sections with relocation | |
3636 | information. */ | |
3637 | if ((sectp->flags & SEC_RELOC) == 0) | |
3638 | return NULL; | |
3639 | ||
3640 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3641 | all sections begin at 0. */ | |
3642 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3643 | ||
3644 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3645 | } | |
3646 | ||
086df311 DJ |
3647 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3648 | contents are stored in BUF if it is non-NULL, or returned in a | |
3649 | malloc'd buffer otherwise. | |
3650 | ||
3651 | For some platforms and debug info formats, shared libraries contain | |
3652 | relocations against the debug sections (particularly for DWARF-2; | |
3653 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3654 | the version of the linker in use). Also, ELF object files naturally | |
3655 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3656 | the relocations in order to get the locations of symbols correct. |
3657 | Another example that may require relocation processing, is the | |
3658 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3659 | debug section. */ | |
086df311 DJ |
3660 | |
3661 | bfd_byte * | |
ac8035ab TG |
3662 | symfile_relocate_debug_section (struct objfile *objfile, |
3663 | asection *sectp, bfd_byte *buf) | |
086df311 | 3664 | { |
ac8035ab | 3665 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3666 | |
ac8035ab | 3667 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3668 | } |
c906108c | 3669 | |
31d99776 DJ |
3670 | struct symfile_segment_data * |
3671 | get_symfile_segment_data (bfd *abfd) | |
3672 | { | |
00b5771c | 3673 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3674 | |
3675 | if (sf == NULL) | |
3676 | return NULL; | |
3677 | ||
3678 | return sf->sym_segments (abfd); | |
3679 | } | |
3680 | ||
3681 | void | |
3682 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3683 | { | |
3684 | xfree (data->segment_bases); | |
3685 | xfree (data->segment_sizes); | |
3686 | xfree (data->segment_info); | |
3687 | xfree (data); | |
3688 | } | |
3689 | ||
28c32713 JB |
3690 | /* Given: |
3691 | - DATA, containing segment addresses from the object file ABFD, and | |
3692 | the mapping from ABFD's sections onto the segments that own them, | |
3693 | and | |
3694 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3695 | segment addresses reported by the target, | |
3696 | store the appropriate offsets for each section in OFFSETS. | |
3697 | ||
3698 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3699 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3700 | ||
8d385431 DJ |
3701 | If there are more entries, then ignore the extra. The target may |
3702 | not be able to distinguish between an empty data segment and a | |
3703 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3704 | |
31d99776 | 3705 | int |
3189cb12 DE |
3706 | symfile_map_offsets_to_segments (bfd *abfd, |
3707 | const struct symfile_segment_data *data, | |
31d99776 DJ |
3708 | struct section_offsets *offsets, |
3709 | int num_segment_bases, | |
3710 | const CORE_ADDR *segment_bases) | |
3711 | { | |
3712 | int i; | |
3713 | asection *sect; | |
3714 | ||
28c32713 JB |
3715 | /* It doesn't make sense to call this function unless you have some |
3716 | segment base addresses. */ | |
202b96c1 | 3717 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3718 | |
31d99776 DJ |
3719 | /* If we do not have segment mappings for the object file, we |
3720 | can not relocate it by segments. */ | |
3721 | gdb_assert (data != NULL); | |
3722 | gdb_assert (data->num_segments > 0); | |
3723 | ||
31d99776 DJ |
3724 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3725 | { | |
31d99776 DJ |
3726 | int which = data->segment_info[i]; |
3727 | ||
28c32713 JB |
3728 | gdb_assert (0 <= which && which <= data->num_segments); |
3729 | ||
3730 | /* Don't bother computing offsets for sections that aren't | |
3731 | loaded as part of any segment. */ | |
3732 | if (! which) | |
3733 | continue; | |
3734 | ||
3735 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3736 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3737 | if (which > num_segment_bases) |
28c32713 | 3738 | which = num_segment_bases; |
31d99776 | 3739 | |
28c32713 JB |
3740 | offsets->offsets[i] = (segment_bases[which - 1] |
3741 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3742 | } |
3743 | ||
3744 | return 1; | |
3745 | } | |
3746 | ||
3747 | static void | |
3748 | symfile_find_segment_sections (struct objfile *objfile) | |
3749 | { | |
3750 | bfd *abfd = objfile->obfd; | |
3751 | int i; | |
3752 | asection *sect; | |
3753 | struct symfile_segment_data *data; | |
3754 | ||
3755 | data = get_symfile_segment_data (objfile->obfd); | |
3756 | if (data == NULL) | |
3757 | return; | |
3758 | ||
3759 | if (data->num_segments != 1 && data->num_segments != 2) | |
3760 | { | |
3761 | free_symfile_segment_data (data); | |
3762 | return; | |
3763 | } | |
3764 | ||
3765 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3766 | { | |
31d99776 DJ |
3767 | int which = data->segment_info[i]; |
3768 | ||
3769 | if (which == 1) | |
3770 | { | |
3771 | if (objfile->sect_index_text == -1) | |
3772 | objfile->sect_index_text = sect->index; | |
3773 | ||
3774 | if (objfile->sect_index_rodata == -1) | |
3775 | objfile->sect_index_rodata = sect->index; | |
3776 | } | |
3777 | else if (which == 2) | |
3778 | { | |
3779 | if (objfile->sect_index_data == -1) | |
3780 | objfile->sect_index_data = sect->index; | |
3781 | ||
3782 | if (objfile->sect_index_bss == -1) | |
3783 | objfile->sect_index_bss = sect->index; | |
3784 | } | |
3785 | } | |
3786 | ||
3787 | free_symfile_segment_data (data); | |
3788 | } | |
3789 | ||
76ad5e1e NB |
3790 | /* Listen for free_objfile events. */ |
3791 | ||
3792 | static void | |
3793 | symfile_free_objfile (struct objfile *objfile) | |
3794 | { | |
c33b2f12 MM |
3795 | /* Remove the target sections owned by this objfile. */ |
3796 | if (objfile != NULL) | |
76ad5e1e NB |
3797 | remove_target_sections ((void *) objfile); |
3798 | } | |
3799 | ||
540c2971 DE |
3800 | /* Wrapper around the quick_symbol_functions expand_symtabs_matching "method". |
3801 | Expand all symtabs that match the specified criteria. | |
3802 | See quick_symbol_functions.expand_symtabs_matching for details. */ | |
3803 | ||
3804 | void | |
14bc53a8 PA |
3805 | expand_symtabs_matching |
3806 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
3807 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3808 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
3809 | enum search_domain kind) | |
540c2971 DE |
3810 | { |
3811 | struct objfile *objfile; | |
3812 | ||
3813 | ALL_OBJFILES (objfile) | |
3814 | { | |
3815 | if (objfile->sf) | |
bb4142cf | 3816 | objfile->sf->qf->expand_symtabs_matching (objfile, file_matcher, |
276d885b | 3817 | symbol_matcher, |
14bc53a8 | 3818 | expansion_notify, kind); |
540c2971 DE |
3819 | } |
3820 | } | |
3821 | ||
3822 | /* Wrapper around the quick_symbol_functions map_symbol_filenames "method". | |
3823 | Map function FUN over every file. | |
3824 | See quick_symbol_functions.map_symbol_filenames for details. */ | |
3825 | ||
3826 | void | |
bb4142cf DE |
3827 | map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
3828 | int need_fullname) | |
540c2971 DE |
3829 | { |
3830 | struct objfile *objfile; | |
3831 | ||
3832 | ALL_OBJFILES (objfile) | |
3833 | { | |
3834 | if (objfile->sf) | |
3835 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data, | |
3836 | need_fullname); | |
3837 | } | |
3838 | } | |
3839 | ||
c906108c | 3840 | void |
fba45db2 | 3841 | _initialize_symfile (void) |
c906108c SS |
3842 | { |
3843 | struct cmd_list_element *c; | |
c5aa993b | 3844 | |
76ad5e1e NB |
3845 | observer_attach_free_objfile (symfile_free_objfile); |
3846 | ||
1a966eab AC |
3847 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3848 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3849 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3850 | to execute."), &cmdlist); |
5ba2abeb | 3851 | set_cmd_completer (c, filename_completer); |
c906108c | 3852 | |
1a966eab | 3853 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3854 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
3e43a32a MS |
3855 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR>\ |
3856 | ...]\nADDR is the starting address of the file's text.\n\ | |
db162d44 EZ |
3857 | The optional arguments are section-name section-address pairs and\n\ |
3858 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3859 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3860 | &cmdlist); |
5ba2abeb | 3861 | set_cmd_completer (c, filename_completer); |
c906108c | 3862 | |
63644780 NB |
3863 | c = add_cmd ("remove-symbol-file", class_files, |
3864 | remove_symbol_file_command, _("\ | |
3865 | Remove a symbol file added via the add-symbol-file command.\n\ | |
3866 | Usage: remove-symbol-file FILENAME\n\ | |
3867 | remove-symbol-file -a ADDRESS\n\ | |
3868 | The file to remove can be identified by its filename or by an address\n\ | |
3869 | that lies within the boundaries of this symbol file in memory."), | |
3870 | &cmdlist); | |
3871 | ||
1a966eab AC |
3872 | c = add_cmd ("load", class_files, load_command, _("\ |
3873 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd | 3874 | for access from GDB.\n\ |
5cf30ebf LM |
3875 | An optional load OFFSET may also be given as a literal address.\n\ |
3876 | When OFFSET is provided, FILE must also be provided. FILE can be provided\n\ | |
3877 | on its own.\n\ | |
3878 | Usage: load [FILE] [OFFSET]"), &cmdlist); | |
5ba2abeb | 3879 | set_cmd_completer (c, filename_completer); |
c906108c | 3880 | |
c5aa993b | 3881 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3882 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3883 | "overlay ", 0, &cmdlist); |
3884 | ||
3885 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3886 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3887 | ||
c5aa993b | 3888 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3889 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3890 | |
c5aa993b | 3891 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3892 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3893 | |
c5aa993b | 3894 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3895 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3896 | |
c5aa993b | 3897 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3898 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3899 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3900 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3901 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3902 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3903 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3904 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3905 | |
3906 | /* Filename extension to source language lookup table: */ | |
26c41df3 AC |
3907 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3908 | &ext_args, _("\ | |
3909 | Set mapping between filename extension and source language."), _("\ | |
3910 | Show mapping between filename extension and source language."), _("\ | |
3911 | Usage: set extension-language .foo bar"), | |
3912 | set_ext_lang_command, | |
920d2a44 | 3913 | show_ext_args, |
26c41df3 | 3914 | &setlist, &showlist); |
c906108c | 3915 | |
c5aa993b | 3916 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3917 | _("All filename extensions associated with a source language.")); |
917317f4 | 3918 | |
525226b5 AC |
3919 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3920 | &debug_file_directory, _("\ | |
24ddea62 JK |
3921 | Set the directories where separate debug symbols are searched for."), _("\ |
3922 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3923 | Separate debug symbols are first searched for in the same\n\ |
3924 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3925 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3926 | each global debug-file-directory component prepended."), |
525226b5 | 3927 | NULL, |
920d2a44 | 3928 | show_debug_file_directory, |
525226b5 | 3929 | &setlist, &showlist); |
770e7fc7 DE |
3930 | |
3931 | add_setshow_enum_cmd ("symbol-loading", no_class, | |
3932 | print_symbol_loading_enums, &print_symbol_loading, | |
3933 | _("\ | |
3934 | Set printing of symbol loading messages."), _("\ | |
3935 | Show printing of symbol loading messages."), _("\ | |
3936 | off == turn all messages off\n\ | |
3937 | brief == print messages for the executable,\n\ | |
3938 | and brief messages for shared libraries\n\ | |
3939 | full == print messages for the executable,\n\ | |
3940 | and messages for each shared library."), | |
3941 | NULL, | |
3942 | NULL, | |
3943 | &setprintlist, &showprintlist); | |
c4dcb155 SM |
3944 | |
3945 | add_setshow_boolean_cmd ("separate-debug-file", no_class, | |
3946 | &separate_debug_file_debug, _("\ | |
3947 | Set printing of separate debug info file search debug."), _("\ | |
3948 | Show printing of separate debug info file search debug."), _("\ | |
3949 | When on, GDB prints the searched locations while looking for separate debug \ | |
3950 | info files."), NULL, NULL, &setdebuglist, &showdebuglist); | |
c906108c | 3951 | } |