Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
e2882c85 | 3 | Copyright (C) 1990-2018 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" |
32fa66eb | 60 | #include "selftest.h" |
c906108c | 61 | |
c906108c SS |
62 | #include <sys/types.h> |
63 | #include <fcntl.h> | |
53ce3c39 | 64 | #include <sys/stat.h> |
c906108c | 65 | #include <ctype.h> |
dcb07cfa | 66 | #include <chrono> |
c906108c | 67 | |
ccefe4c4 | 68 | #include "psymtab.h" |
c906108c | 69 | |
3e43a32a MS |
70 | int (*deprecated_ui_load_progress_hook) (const char *section, |
71 | unsigned long num); | |
9a4105ab | 72 | void (*deprecated_show_load_progress) (const char *section, |
5417f6dc RM |
73 | unsigned long section_sent, |
74 | unsigned long section_size, | |
75 | unsigned long total_sent, | |
c2d11a7d | 76 | unsigned long total_size); |
769d7dc4 AC |
77 | void (*deprecated_pre_add_symbol_hook) (const char *); |
78 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 79 | |
74b7792f AC |
80 | static void clear_symtab_users_cleanup (void *ignore); |
81 | ||
c378eb4e MS |
82 | /* Global variables owned by this file. */ |
83 | int readnow_symbol_files; /* Read full symbols immediately. */ | |
97cbe998 | 84 | int readnever_symbol_files; /* Never read full symbols. */ |
c906108c | 85 | |
c378eb4e | 86 | /* Functions this file defines. */ |
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 simple_free_overlay_table (void); |
c906108c | 96 | |
e17a4113 UW |
97 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
98 | enum bfd_endian); | |
c906108c | 99 | |
a14ed312 | 100 | static int simple_read_overlay_table (void); |
c906108c | 101 | |
a14ed312 | 102 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 103 | |
31d99776 DJ |
104 | static void symfile_find_segment_sections (struct objfile *objfile); |
105 | ||
c906108c SS |
106 | /* List of all available sym_fns. On gdb startup, each object file reader |
107 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 108 | prepared to read. */ |
c906108c | 109 | |
905014d7 | 110 | struct registered_sym_fns |
c256e171 | 111 | { |
905014d7 SM |
112 | registered_sym_fns (bfd_flavour sym_flavour_, const struct sym_fns *sym_fns_) |
113 | : sym_flavour (sym_flavour_), sym_fns (sym_fns_) | |
114 | {} | |
115 | ||
c256e171 DE |
116 | /* BFD flavour that we handle. */ |
117 | enum bfd_flavour sym_flavour; | |
118 | ||
119 | /* The "vtable" of symbol functions. */ | |
120 | const struct sym_fns *sym_fns; | |
905014d7 | 121 | }; |
c256e171 | 122 | |
905014d7 | 123 | static std::vector<registered_sym_fns> symtab_fns; |
c906108c | 124 | |
770e7fc7 DE |
125 | /* Values for "set print symbol-loading". */ |
126 | ||
127 | const char print_symbol_loading_off[] = "off"; | |
128 | const char print_symbol_loading_brief[] = "brief"; | |
129 | const char print_symbol_loading_full[] = "full"; | |
130 | static const char *print_symbol_loading_enums[] = | |
131 | { | |
132 | print_symbol_loading_off, | |
133 | print_symbol_loading_brief, | |
134 | print_symbol_loading_full, | |
135 | NULL | |
136 | }; | |
137 | static const char *print_symbol_loading = print_symbol_loading_full; | |
138 | ||
b7209cb4 FF |
139 | /* If non-zero, shared library symbols will be added automatically |
140 | when the inferior is created, new libraries are loaded, or when | |
141 | attaching to the inferior. This is almost always what users will | |
142 | want to have happen; but for very large programs, the startup time | |
143 | will be excessive, and so if this is a problem, the user can clear | |
144 | this flag and then add the shared library symbols as needed. Note | |
145 | that there is a potential for confusion, since if the shared | |
c906108c | 146 | library symbols are not loaded, commands like "info fun" will *not* |
0d14a781 | 147 | report all the functions that are actually present. */ |
c906108c SS |
148 | |
149 | int auto_solib_add = 1; | |
c906108c | 150 | \f |
c5aa993b | 151 | |
770e7fc7 DE |
152 | /* Return non-zero if symbol-loading messages should be printed. |
153 | FROM_TTY is the standard from_tty argument to gdb commands. | |
154 | If EXEC is non-zero the messages are for the executable. | |
155 | Otherwise, messages are for shared libraries. | |
156 | If FULL is non-zero then the caller is printing a detailed message. | |
157 | E.g., the message includes the shared library name. | |
158 | Otherwise, the caller is printing a brief "summary" message. */ | |
159 | ||
160 | int | |
161 | print_symbol_loading_p (int from_tty, int exec, int full) | |
162 | { | |
163 | if (!from_tty && !info_verbose) | |
164 | return 0; | |
165 | ||
166 | if (exec) | |
167 | { | |
168 | /* We don't check FULL for executables, there are few such | |
169 | messages, therefore brief == full. */ | |
170 | return print_symbol_loading != print_symbol_loading_off; | |
171 | } | |
172 | if (full) | |
173 | return print_symbol_loading == print_symbol_loading_full; | |
174 | return print_symbol_loading == print_symbol_loading_brief; | |
175 | } | |
176 | ||
0d14a781 | 177 | /* True if we are reading a symbol table. */ |
c906108c SS |
178 | |
179 | int currently_reading_symtab = 0; | |
180 | ||
ccefe4c4 TT |
181 | /* Increment currently_reading_symtab and return a cleanup that can be |
182 | used to decrement it. */ | |
3b7bacac | 183 | |
c83dd867 | 184 | scoped_restore_tmpl<int> |
ccefe4c4 | 185 | increment_reading_symtab (void) |
c906108c | 186 | { |
c83dd867 TT |
187 | gdb_assert (currently_reading_symtab >= 0); |
188 | return make_scoped_restore (¤tly_reading_symtab, | |
189 | currently_reading_symtab + 1); | |
c906108c SS |
190 | } |
191 | ||
5417f6dc RM |
192 | /* Remember the lowest-addressed loadable section we've seen. |
193 | This function is called via bfd_map_over_sections. | |
c906108c SS |
194 | |
195 | In case of equal vmas, the section with the largest size becomes the | |
196 | lowest-addressed loadable section. | |
197 | ||
198 | If the vmas and sizes are equal, the last section is considered the | |
199 | lowest-addressed loadable section. */ | |
200 | ||
201 | void | |
4efb68b1 | 202 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 203 | { |
c5aa993b | 204 | asection **lowest = (asection **) obj; |
c906108c | 205 | |
eb73e134 | 206 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
207 | return; |
208 | if (!*lowest) | |
209 | *lowest = sect; /* First loadable section */ | |
210 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
211 | *lowest = sect; /* A lower loadable section */ | |
212 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
213 | && (bfd_section_size (abfd, (*lowest)) | |
214 | <= bfd_section_size (abfd, sect))) | |
215 | *lowest = sect; | |
216 | } | |
217 | ||
d76488d8 TT |
218 | /* Create a new section_addr_info, with room for NUM_SECTIONS. The |
219 | new object's 'num_sections' field is set to 0; it must be updated | |
220 | by the caller. */ | |
a39a16c4 MM |
221 | |
222 | struct section_addr_info * | |
223 | alloc_section_addr_info (size_t num_sections) | |
224 | { | |
225 | struct section_addr_info *sap; | |
226 | size_t size; | |
227 | ||
228 | size = (sizeof (struct section_addr_info) | |
229 | + sizeof (struct other_sections) * (num_sections - 1)); | |
230 | sap = (struct section_addr_info *) xmalloc (size); | |
231 | memset (sap, 0, size); | |
a39a16c4 MM |
232 | |
233 | return sap; | |
234 | } | |
62557bbc KB |
235 | |
236 | /* Build (allocate and populate) a section_addr_info struct from | |
c378eb4e | 237 | an existing section table. */ |
62557bbc KB |
238 | |
239 | extern struct section_addr_info * | |
0542c86d PA |
240 | build_section_addr_info_from_section_table (const struct target_section *start, |
241 | const struct target_section *end) | |
62557bbc KB |
242 | { |
243 | struct section_addr_info *sap; | |
0542c86d | 244 | const struct target_section *stp; |
62557bbc KB |
245 | int oidx; |
246 | ||
a39a16c4 | 247 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
248 | |
249 | for (stp = start, oidx = 0; stp != end; stp++) | |
250 | { | |
2b2848e2 DE |
251 | struct bfd_section *asect = stp->the_bfd_section; |
252 | bfd *abfd = asect->owner; | |
253 | ||
254 | if (bfd_get_section_flags (abfd, asect) & (SEC_ALLOC | SEC_LOAD) | |
a39a16c4 | 255 | && oidx < end - start) |
62557bbc KB |
256 | { |
257 | sap->other[oidx].addr = stp->addr; | |
2b2848e2 DE |
258 | sap->other[oidx].name = xstrdup (bfd_section_name (abfd, asect)); |
259 | sap->other[oidx].sectindex = gdb_bfd_section_index (abfd, asect); | |
62557bbc KB |
260 | oidx++; |
261 | } | |
262 | } | |
263 | ||
d76488d8 TT |
264 | sap->num_sections = oidx; |
265 | ||
62557bbc KB |
266 | return sap; |
267 | } | |
268 | ||
82ccf5a5 | 269 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 270 | |
82ccf5a5 JK |
271 | static struct section_addr_info * |
272 | build_section_addr_info_from_bfd (bfd *abfd) | |
089b4803 TG |
273 | { |
274 | struct section_addr_info *sap; | |
275 | int i; | |
276 | struct bfd_section *sec; | |
277 | ||
82ccf5a5 JK |
278 | sap = alloc_section_addr_info (bfd_count_sections (abfd)); |
279 | for (i = 0, sec = abfd->sections; sec != NULL; sec = sec->next) | |
280 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) | |
012836ea | 281 | { |
82ccf5a5 JK |
282 | sap->other[i].addr = bfd_get_section_vma (abfd, sec); |
283 | sap->other[i].name = xstrdup (bfd_get_section_name (abfd, sec)); | |
65cf3563 | 284 | sap->other[i].sectindex = gdb_bfd_section_index (abfd, sec); |
012836ea JK |
285 | i++; |
286 | } | |
d76488d8 TT |
287 | |
288 | sap->num_sections = i; | |
289 | ||
089b4803 TG |
290 | return sap; |
291 | } | |
292 | ||
82ccf5a5 JK |
293 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
294 | ||
295 | struct section_addr_info * | |
296 | build_section_addr_info_from_objfile (const struct objfile *objfile) | |
297 | { | |
298 | struct section_addr_info *sap; | |
299 | int i; | |
300 | ||
301 | /* Before reread_symbols gets rewritten it is not safe to call: | |
302 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
303 | */ | |
304 | sap = build_section_addr_info_from_bfd (objfile->obfd); | |
d76488d8 | 305 | for (i = 0; i < sap->num_sections; i++) |
82ccf5a5 JK |
306 | { |
307 | int sectindex = sap->other[i].sectindex; | |
308 | ||
309 | sap->other[i].addr += objfile->section_offsets->offsets[sectindex]; | |
310 | } | |
311 | return sap; | |
312 | } | |
62557bbc | 313 | |
c378eb4e | 314 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ |
62557bbc KB |
315 | |
316 | extern void | |
317 | free_section_addr_info (struct section_addr_info *sap) | |
318 | { | |
319 | int idx; | |
320 | ||
a39a16c4 | 321 | for (idx = 0; idx < sap->num_sections; idx++) |
d76488d8 | 322 | xfree (sap->other[idx].name); |
b8c9b27d | 323 | xfree (sap); |
62557bbc KB |
324 | } |
325 | ||
e8289572 | 326 | /* Initialize OBJFILE's sect_index_* members. */ |
3b7bacac | 327 | |
e8289572 JB |
328 | static void |
329 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 330 | { |
e8289572 | 331 | asection *sect; |
c906108c | 332 | int i; |
5417f6dc | 333 | |
b8fbeb18 | 334 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 335 | if (sect) |
b8fbeb18 EZ |
336 | objfile->sect_index_text = sect->index; |
337 | ||
338 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 339 | if (sect) |
b8fbeb18 EZ |
340 | objfile->sect_index_data = sect->index; |
341 | ||
342 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 343 | if (sect) |
b8fbeb18 EZ |
344 | objfile->sect_index_bss = sect->index; |
345 | ||
346 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 347 | if (sect) |
b8fbeb18 EZ |
348 | objfile->sect_index_rodata = sect->index; |
349 | ||
bbcd32ad FF |
350 | /* This is where things get really weird... We MUST have valid |
351 | indices for the various sect_index_* members or gdb will abort. | |
352 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
353 | accomodate that. First, check for a file with the standard |
354 | one or two segments. */ | |
355 | ||
356 | symfile_find_segment_sections (objfile); | |
357 | ||
358 | /* Except when explicitly adding symbol files at some address, | |
359 | section_offsets contains nothing but zeros, so it doesn't matter | |
360 | which slot in section_offsets the individual sect_index_* members | |
361 | index into. So if they are all zero, it is safe to just point | |
362 | all the currently uninitialized indices to the first slot. But | |
363 | beware: if this is the main executable, it may be relocated | |
364 | later, e.g. by the remote qOffsets packet, and then this will | |
365 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
366 | |
367 | for (i = 0; i < objfile->num_sections; i++) | |
368 | { | |
369 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
370 | { | |
371 | break; | |
372 | } | |
373 | } | |
374 | if (i == objfile->num_sections) | |
375 | { | |
376 | if (objfile->sect_index_text == -1) | |
377 | objfile->sect_index_text = 0; | |
378 | if (objfile->sect_index_data == -1) | |
379 | objfile->sect_index_data = 0; | |
380 | if (objfile->sect_index_bss == -1) | |
381 | objfile->sect_index_bss = 0; | |
382 | if (objfile->sect_index_rodata == -1) | |
383 | objfile->sect_index_rodata = 0; | |
384 | } | |
b8fbeb18 | 385 | } |
c906108c | 386 | |
c1bd25fd DJ |
387 | /* The arguments to place_section. */ |
388 | ||
389 | struct place_section_arg | |
390 | { | |
391 | struct section_offsets *offsets; | |
392 | CORE_ADDR lowest; | |
393 | }; | |
394 | ||
395 | /* Find a unique offset to use for loadable section SECT if | |
396 | the user did not provide an offset. */ | |
397 | ||
2c0b251b | 398 | static void |
c1bd25fd DJ |
399 | place_section (bfd *abfd, asection *sect, void *obj) |
400 | { | |
19ba03f4 | 401 | struct place_section_arg *arg = (struct place_section_arg *) obj; |
c1bd25fd DJ |
402 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; |
403 | int done; | |
3bd72c6f | 404 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 405 | |
2711e456 DJ |
406 | /* We are only interested in allocated sections. */ |
407 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
408 | return; |
409 | ||
410 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 411 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
412 | return; |
413 | ||
414 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
415 | start_addr = (arg->lowest + align - 1) & -align; |
416 | ||
c1bd25fd DJ |
417 | do { |
418 | asection *cur_sec; | |
c1bd25fd | 419 | |
c1bd25fd DJ |
420 | done = 1; |
421 | ||
422 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
423 | { | |
424 | int indx = cur_sec->index; | |
c1bd25fd DJ |
425 | |
426 | /* We don't need to compare against ourself. */ | |
427 | if (cur_sec == sect) | |
428 | continue; | |
429 | ||
2711e456 DJ |
430 | /* We can only conflict with allocated sections. */ |
431 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
432 | continue; |
433 | ||
434 | /* If the section offset is 0, either the section has not been placed | |
435 | yet, or it was the lowest section placed (in which case LOWEST | |
436 | will be past its end). */ | |
437 | if (offsets[indx] == 0) | |
438 | continue; | |
439 | ||
440 | /* If this section would overlap us, then we must move up. */ | |
441 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
442 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
443 | { | |
444 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
445 | start_addr = (start_addr + align - 1) & -align; | |
446 | done = 0; | |
3bd72c6f | 447 | break; |
c1bd25fd DJ |
448 | } |
449 | ||
450 | /* Otherwise, we appear to be OK. So far. */ | |
451 | } | |
452 | } | |
453 | while (!done); | |
454 | ||
65cf3563 | 455 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
c1bd25fd | 456 | arg->lowest = start_addr + bfd_get_section_size (sect); |
c1bd25fd | 457 | } |
e8289572 | 458 | |
75242ef4 JK |
459 | /* Store struct section_addr_info as prepared (made relative and with SECTINDEX |
460 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS | |
461 | entries. */ | |
e8289572 JB |
462 | |
463 | void | |
75242ef4 JK |
464 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
465 | int num_sections, | |
3189cb12 | 466 | const struct section_addr_info *addrs) |
e8289572 JB |
467 | { |
468 | int i; | |
469 | ||
75242ef4 | 470 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 471 | |
c378eb4e | 472 | /* Now calculate offsets for section that were specified by the caller. */ |
d76488d8 | 473 | for (i = 0; i < addrs->num_sections; i++) |
e8289572 | 474 | { |
3189cb12 | 475 | const struct other_sections *osp; |
e8289572 | 476 | |
75242ef4 | 477 | osp = &addrs->other[i]; |
5488dafb | 478 | if (osp->sectindex == -1) |
e8289572 JB |
479 | continue; |
480 | ||
c378eb4e | 481 | /* Record all sections in offsets. */ |
e8289572 | 482 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 483 | the BFD index. */ |
75242ef4 JK |
484 | section_offsets->offsets[osp->sectindex] = osp->addr; |
485 | } | |
486 | } | |
487 | ||
1276c759 JK |
488 | /* Transform section name S for a name comparison. prelink can split section |
489 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
490 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
491 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
492 | (`.sbss') section has invalid (increased) virtual address. */ | |
493 | ||
494 | static const char * | |
495 | addr_section_name (const char *s) | |
496 | { | |
497 | if (strcmp (s, ".dynbss") == 0) | |
498 | return ".bss"; | |
499 | if (strcmp (s, ".sdynbss") == 0) | |
500 | return ".sbss"; | |
501 | ||
502 | return s; | |
503 | } | |
504 | ||
82ccf5a5 JK |
505 | /* qsort comparator for addrs_section_sort. Sort entries in ascending order by |
506 | their (name, sectindex) pair. sectindex makes the sort by name stable. */ | |
507 | ||
508 | static int | |
509 | addrs_section_compar (const void *ap, const void *bp) | |
510 | { | |
511 | const struct other_sections *a = *((struct other_sections **) ap); | |
512 | const struct other_sections *b = *((struct other_sections **) bp); | |
22e048c9 | 513 | int retval; |
82ccf5a5 | 514 | |
1276c759 | 515 | retval = strcmp (addr_section_name (a->name), addr_section_name (b->name)); |
82ccf5a5 JK |
516 | if (retval) |
517 | return retval; | |
518 | ||
5488dafb | 519 | return a->sectindex - b->sectindex; |
82ccf5a5 JK |
520 | } |
521 | ||
522 | /* Provide sorted array of pointers to sections of ADDRS. The array is | |
523 | terminated by NULL. Caller is responsible to call xfree for it. */ | |
524 | ||
525 | static struct other_sections ** | |
526 | addrs_section_sort (struct section_addr_info *addrs) | |
527 | { | |
528 | struct other_sections **array; | |
529 | int i; | |
530 | ||
531 | /* `+ 1' for the NULL terminator. */ | |
8d749320 | 532 | array = XNEWVEC (struct other_sections *, addrs->num_sections + 1); |
d76488d8 | 533 | for (i = 0; i < addrs->num_sections; i++) |
82ccf5a5 JK |
534 | array[i] = &addrs->other[i]; |
535 | array[i] = NULL; | |
536 | ||
537 | qsort (array, i, sizeof (*array), addrs_section_compar); | |
538 | ||
539 | return array; | |
540 | } | |
541 | ||
75242ef4 | 542 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
543 | also SECTINDEXes specific to ABFD there. This function can be used to |
544 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
545 | |
546 | void | |
547 | addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd) | |
548 | { | |
549 | asection *lower_sect; | |
75242ef4 JK |
550 | CORE_ADDR lower_offset; |
551 | int i; | |
82ccf5a5 JK |
552 | struct cleanup *my_cleanup; |
553 | struct section_addr_info *abfd_addrs; | |
554 | struct other_sections **addrs_sorted, **abfd_addrs_sorted; | |
555 | struct other_sections **addrs_to_abfd_addrs; | |
75242ef4 JK |
556 | |
557 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
558 | continguous sections. */ |
559 | lower_sect = NULL; | |
560 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
561 | if (lower_sect == NULL) |
562 | { | |
563 | warning (_("no loadable sections found in added symbol-file %s"), | |
564 | bfd_get_filename (abfd)); | |
565 | lower_offset = 0; | |
e8289572 | 566 | } |
75242ef4 JK |
567 | else |
568 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
569 | ||
82ccf5a5 JK |
570 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
571 | in ABFD. Section names are not unique - there can be multiple sections of | |
572 | the same name. Also the sections of the same name do not have to be | |
573 | adjacent to each other. Some sections may be present only in one of the | |
574 | files. Even sections present in both files do not have to be in the same | |
575 | order. | |
576 | ||
577 | Use stable sort by name for the sections in both files. Then linearly | |
578 | scan both lists matching as most of the entries as possible. */ | |
579 | ||
580 | addrs_sorted = addrs_section_sort (addrs); | |
581 | my_cleanup = make_cleanup (xfree, addrs_sorted); | |
582 | ||
583 | abfd_addrs = build_section_addr_info_from_bfd (abfd); | |
584 | make_cleanup_free_section_addr_info (abfd_addrs); | |
585 | abfd_addrs_sorted = addrs_section_sort (abfd_addrs); | |
586 | make_cleanup (xfree, abfd_addrs_sorted); | |
587 | ||
c378eb4e MS |
588 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
589 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 | 590 | |
8d749320 | 591 | addrs_to_abfd_addrs = XCNEWVEC (struct other_sections *, addrs->num_sections); |
82ccf5a5 JK |
592 | make_cleanup (xfree, addrs_to_abfd_addrs); |
593 | ||
594 | while (*addrs_sorted) | |
595 | { | |
1276c759 | 596 | const char *sect_name = addr_section_name ((*addrs_sorted)->name); |
82ccf5a5 JK |
597 | |
598 | while (*abfd_addrs_sorted | |
1276c759 JK |
599 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
600 | sect_name) < 0) | |
82ccf5a5 JK |
601 | abfd_addrs_sorted++; |
602 | ||
603 | if (*abfd_addrs_sorted | |
1276c759 JK |
604 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
605 | sect_name) == 0) | |
82ccf5a5 JK |
606 | { |
607 | int index_in_addrs; | |
608 | ||
609 | /* Make the found item directly addressable from ADDRS. */ | |
610 | index_in_addrs = *addrs_sorted - addrs->other; | |
611 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); | |
612 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_addrs_sorted; | |
613 | ||
614 | /* Never use the same ABFD entry twice. */ | |
615 | abfd_addrs_sorted++; | |
616 | } | |
617 | ||
618 | addrs_sorted++; | |
619 | } | |
620 | ||
75242ef4 JK |
621 | /* Calculate offsets for the loadable sections. |
622 | FIXME! Sections must be in order of increasing loadable section | |
623 | so that contiguous sections can use the lower-offset!!! | |
624 | ||
625 | Adjust offsets if the segments are not contiguous. | |
626 | If the section is contiguous, its offset should be set to | |
627 | the offset of the highest loadable section lower than it | |
628 | (the loadable section directly below it in memory). | |
629 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
630 | ||
d76488d8 | 631 | for (i = 0; i < addrs->num_sections; i++) |
75242ef4 | 632 | { |
82ccf5a5 | 633 | struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
634 | |
635 | if (sect) | |
75242ef4 | 636 | { |
c378eb4e | 637 | /* This is the index used by BFD. */ |
82ccf5a5 | 638 | addrs->other[i].sectindex = sect->sectindex; |
672d9c23 JK |
639 | |
640 | if (addrs->other[i].addr != 0) | |
75242ef4 | 641 | { |
82ccf5a5 | 642 | addrs->other[i].addr -= sect->addr; |
75242ef4 | 643 | lower_offset = addrs->other[i].addr; |
75242ef4 JK |
644 | } |
645 | else | |
672d9c23 | 646 | addrs->other[i].addr = lower_offset; |
75242ef4 JK |
647 | } |
648 | else | |
672d9c23 | 649 | { |
1276c759 JK |
650 | /* addr_section_name transformation is not used for SECT_NAME. */ |
651 | const char *sect_name = addrs->other[i].name; | |
652 | ||
b0fcb67f JK |
653 | /* This section does not exist in ABFD, which is normally |
654 | unexpected and we want to issue a warning. | |
655 | ||
4d9743af JK |
656 | However, the ELF prelinker does create a few sections which are |
657 | marked in the main executable as loadable (they are loaded in | |
658 | memory from the DYNAMIC segment) and yet are not present in | |
659 | separate debug info files. This is fine, and should not cause | |
660 | a warning. Shared libraries contain just the section | |
661 | ".gnu.liblist" but it is not marked as loadable there. There is | |
662 | no other way to identify them than by their name as the sections | |
1276c759 JK |
663 | created by prelink have no special flags. |
664 | ||
665 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f JK |
666 | |
667 | if (!(strcmp (sect_name, ".gnu.liblist") == 0 | |
4d9743af | 668 | || strcmp (sect_name, ".gnu.conflict") == 0 |
1276c759 JK |
669 | || (strcmp (sect_name, ".bss") == 0 |
670 | && i > 0 | |
671 | && strcmp (addrs->other[i - 1].name, ".dynbss") == 0 | |
672 | && addrs_to_abfd_addrs[i - 1] != NULL) | |
673 | || (strcmp (sect_name, ".sbss") == 0 | |
674 | && i > 0 | |
675 | && strcmp (addrs->other[i - 1].name, ".sdynbss") == 0 | |
676 | && addrs_to_abfd_addrs[i - 1] != NULL))) | |
b0fcb67f JK |
677 | warning (_("section %s not found in %s"), sect_name, |
678 | bfd_get_filename (abfd)); | |
679 | ||
672d9c23 | 680 | addrs->other[i].addr = 0; |
5488dafb | 681 | addrs->other[i].sectindex = -1; |
672d9c23 | 682 | } |
75242ef4 | 683 | } |
82ccf5a5 JK |
684 | |
685 | do_cleanups (my_cleanup); | |
75242ef4 JK |
686 | } |
687 | ||
688 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
689 | of how to represent it for fast symbol reading. This is the default | |
690 | version of the sym_fns.sym_offsets function for symbol readers that | |
691 | don't need to do anything special. It allocates a section_offsets table | |
692 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
693 | ||
694 | void | |
695 | default_symfile_offsets (struct objfile *objfile, | |
3189cb12 | 696 | const struct section_addr_info *addrs) |
75242ef4 | 697 | { |
d445b2f6 | 698 | objfile->num_sections = gdb_bfd_count_sections (objfile->obfd); |
75242ef4 JK |
699 | objfile->section_offsets = (struct section_offsets *) |
700 | obstack_alloc (&objfile->objfile_obstack, | |
701 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
702 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
703 | objfile->num_sections, addrs); | |
e8289572 | 704 | |
c1bd25fd DJ |
705 | /* For relocatable files, all loadable sections will start at zero. |
706 | The zero is meaningless, so try to pick arbitrary addresses such | |
707 | that no loadable sections overlap. This algorithm is quadratic, | |
708 | but the number of sections in a single object file is generally | |
709 | small. */ | |
710 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
711 | { | |
712 | struct place_section_arg arg; | |
2711e456 DJ |
713 | bfd *abfd = objfile->obfd; |
714 | asection *cur_sec; | |
2711e456 DJ |
715 | |
716 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
717 | /* We do not expect this to happen; just skip this step if the | |
718 | relocatable file has a section with an assigned VMA. */ | |
719 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
720 | break; | |
721 | ||
722 | if (cur_sec == NULL) | |
723 | { | |
724 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
725 | ||
726 | /* Pick non-overlapping offsets for sections the user did not | |
727 | place explicitly. */ | |
728 | arg.offsets = objfile->section_offsets; | |
729 | arg.lowest = 0; | |
730 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
731 | ||
732 | /* Correctly filling in the section offsets is not quite | |
733 | enough. Relocatable files have two properties that | |
734 | (most) shared objects do not: | |
735 | ||
736 | - Their debug information will contain relocations. Some | |
737 | shared libraries do also, but many do not, so this can not | |
738 | be assumed. | |
739 | ||
740 | - If there are multiple code sections they will be loaded | |
741 | at different relative addresses in memory than they are | |
742 | in the objfile, since all sections in the file will start | |
743 | at address zero. | |
744 | ||
745 | Because GDB has very limited ability to map from an | |
746 | address in debug info to the correct code section, | |
747 | it relies on adding SECT_OFF_TEXT to things which might be | |
748 | code. If we clear all the section offsets, and set the | |
749 | section VMAs instead, then symfile_relocate_debug_section | |
750 | will return meaningful debug information pointing at the | |
751 | correct sections. | |
752 | ||
753 | GDB has too many different data structures for section | |
754 | addresses - a bfd, objfile, and so_list all have section | |
755 | tables, as does exec_ops. Some of these could probably | |
756 | be eliminated. */ | |
757 | ||
758 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
759 | cur_sec = cur_sec->next) | |
760 | { | |
761 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
762 | continue; | |
763 | ||
764 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
765 | exec_set_section_address (bfd_get_filename (abfd), |
766 | cur_sec->index, | |
30510692 | 767 | offsets[cur_sec->index]); |
2711e456 DJ |
768 | offsets[cur_sec->index] = 0; |
769 | } | |
770 | } | |
c1bd25fd DJ |
771 | } |
772 | ||
e8289572 | 773 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 774 | .rodata sections. */ |
e8289572 JB |
775 | init_objfile_sect_indices (objfile); |
776 | } | |
777 | ||
31d99776 DJ |
778 | /* Divide the file into segments, which are individual relocatable units. |
779 | This is the default version of the sym_fns.sym_segments function for | |
780 | symbol readers that do not have an explicit representation of segments. | |
781 | It assumes that object files do not have segments, and fully linked | |
782 | files have a single segment. */ | |
783 | ||
784 | struct symfile_segment_data * | |
785 | default_symfile_segments (bfd *abfd) | |
786 | { | |
787 | int num_sections, i; | |
788 | asection *sect; | |
789 | struct symfile_segment_data *data; | |
790 | CORE_ADDR low, high; | |
791 | ||
792 | /* Relocatable files contain enough information to position each | |
793 | loadable section independently; they should not be relocated | |
794 | in segments. */ | |
795 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
796 | return NULL; | |
797 | ||
798 | /* Make sure there is at least one loadable section in the file. */ | |
799 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
800 | { | |
801 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
802 | continue; | |
803 | ||
804 | break; | |
805 | } | |
806 | if (sect == NULL) | |
807 | return NULL; | |
808 | ||
809 | low = bfd_get_section_vma (abfd, sect); | |
810 | high = low + bfd_get_section_size (sect); | |
811 | ||
41bf6aca | 812 | data = XCNEW (struct symfile_segment_data); |
31d99776 | 813 | data->num_segments = 1; |
fc270c35 TT |
814 | data->segment_bases = XCNEW (CORE_ADDR); |
815 | data->segment_sizes = XCNEW (CORE_ADDR); | |
31d99776 DJ |
816 | |
817 | num_sections = bfd_count_sections (abfd); | |
fc270c35 | 818 | data->segment_info = XCNEWVEC (int, num_sections); |
31d99776 DJ |
819 | |
820 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
821 | { | |
822 | CORE_ADDR vma; | |
823 | ||
824 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
825 | continue; | |
826 | ||
827 | vma = bfd_get_section_vma (abfd, sect); | |
828 | if (vma < low) | |
829 | low = vma; | |
830 | if (vma + bfd_get_section_size (sect) > high) | |
831 | high = vma + bfd_get_section_size (sect); | |
832 | ||
833 | data->segment_info[i] = 1; | |
834 | } | |
835 | ||
836 | data->segment_bases[0] = low; | |
837 | data->segment_sizes[0] = high - low; | |
838 | ||
839 | return data; | |
840 | } | |
841 | ||
608e2dbb TT |
842 | /* This is a convenience function to call sym_read for OBJFILE and |
843 | possibly force the partial symbols to be read. */ | |
844 | ||
845 | static void | |
b15cc25c | 846 | read_symbols (struct objfile *objfile, symfile_add_flags add_flags) |
608e2dbb TT |
847 | { |
848 | (*objfile->sf->sym_read) (objfile, add_flags); | |
23732b1e | 849 | objfile->per_bfd->minsyms_read = true; |
8a92335b JK |
850 | |
851 | /* find_separate_debug_file_in_section should be called only if there is | |
852 | single binary with no existing separate debug info file. */ | |
853 | if (!objfile_has_partial_symbols (objfile) | |
854 | && objfile->separate_debug_objfile == NULL | |
855 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb | 856 | { |
192b62ce | 857 | gdb_bfd_ref_ptr abfd (find_separate_debug_file_in_section (objfile)); |
608e2dbb TT |
858 | |
859 | if (abfd != NULL) | |
24ba069a JK |
860 | { |
861 | /* find_separate_debug_file_in_section uses the same filename for the | |
862 | virtual section-as-bfd like the bfd filename containing the | |
863 | section. Therefore use also non-canonical name form for the same | |
864 | file containing the section. */ | |
192b62ce TT |
865 | symbol_file_add_separate (abfd.get (), objfile->original_name, |
866 | add_flags, objfile); | |
24ba069a | 867 | } |
608e2dbb TT |
868 | } |
869 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
870 | require_partial_symbols (objfile, 0); | |
871 | } | |
872 | ||
3d6e24f0 JB |
873 | /* Initialize entry point information for this objfile. */ |
874 | ||
875 | static void | |
876 | init_entry_point_info (struct objfile *objfile) | |
877 | { | |
6ef55de7 TT |
878 | struct entry_info *ei = &objfile->per_bfd->ei; |
879 | ||
880 | if (ei->initialized) | |
881 | return; | |
882 | ei->initialized = 1; | |
883 | ||
3d6e24f0 JB |
884 | /* Save startup file's range of PC addresses to help blockframe.c |
885 | decide where the bottom of the stack is. */ | |
886 | ||
887 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
888 | { | |
889 | /* Executable file -- record its entry point so we'll recognize | |
890 | the startup file because it contains the entry point. */ | |
6ef55de7 TT |
891 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
892 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
893 | } |
894 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
895 | && bfd_get_start_address (objfile->obfd) != 0) | |
896 | { | |
897 | /* Some shared libraries may have entry points set and be | |
898 | runnable. There's no clear way to indicate this, so just check | |
899 | for values other than zero. */ | |
6ef55de7 TT |
900 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
901 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
902 | } |
903 | else | |
904 | { | |
905 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
6ef55de7 | 906 | ei->entry_point_p = 0; |
3d6e24f0 JB |
907 | } |
908 | ||
6ef55de7 | 909 | if (ei->entry_point_p) |
3d6e24f0 | 910 | { |
53eddfa6 | 911 | struct obj_section *osect; |
6ef55de7 | 912 | CORE_ADDR entry_point = ei->entry_point; |
53eddfa6 | 913 | int found; |
3d6e24f0 JB |
914 | |
915 | /* Make certain that the address points at real code, and not a | |
916 | function descriptor. */ | |
917 | entry_point | |
df6d5441 | 918 | = gdbarch_convert_from_func_ptr_addr (get_objfile_arch (objfile), |
3d6e24f0 JB |
919 | entry_point, |
920 | ¤t_target); | |
921 | ||
922 | /* Remove any ISA markers, so that this matches entries in the | |
923 | symbol table. */ | |
6ef55de7 | 924 | ei->entry_point |
df6d5441 | 925 | = gdbarch_addr_bits_remove (get_objfile_arch (objfile), entry_point); |
53eddfa6 TT |
926 | |
927 | found = 0; | |
928 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
929 | { | |
930 | struct bfd_section *sect = osect->the_bfd_section; | |
931 | ||
932 | if (entry_point >= bfd_get_section_vma (objfile->obfd, sect) | |
933 | && entry_point < (bfd_get_section_vma (objfile->obfd, sect) | |
934 | + bfd_get_section_size (sect))) | |
935 | { | |
6ef55de7 | 936 | ei->the_bfd_section_index |
53eddfa6 TT |
937 | = gdb_bfd_section_index (objfile->obfd, sect); |
938 | found = 1; | |
939 | break; | |
940 | } | |
941 | } | |
942 | ||
943 | if (!found) | |
6ef55de7 | 944 | ei->the_bfd_section_index = SECT_OFF_TEXT (objfile); |
3d6e24f0 JB |
945 | } |
946 | } | |
947 | ||
c906108c SS |
948 | /* Process a symbol file, as either the main file or as a dynamically |
949 | loaded file. | |
950 | ||
36e4d068 JB |
951 | This function does not set the OBJFILE's entry-point info. |
952 | ||
96baa820 JM |
953 | OBJFILE is where the symbols are to be read from. |
954 | ||
7e8580c1 JB |
955 | ADDRS is the list of section load addresses. If the user has given |
956 | an 'add-symbol-file' command, then this is the list of offsets and | |
957 | addresses he or she provided as arguments to the command; or, if | |
958 | we're handling a shared library, these are the actual addresses the | |
959 | sections are loaded at, according to the inferior's dynamic linker | |
960 | (as gleaned by GDB's shared library code). We convert each address | |
961 | into an offset from the section VMA's as it appears in the object | |
962 | file, and then call the file's sym_offsets function to convert this | |
963 | into a format-specific offset table --- a `struct section_offsets'. | |
96baa820 | 964 | |
7eedccfa PP |
965 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
966 | an extra symbol file such as dynamically loaded code, and wether | |
967 | breakpoint reset should be deferred. */ | |
c906108c | 968 | |
36e4d068 JB |
969 | static void |
970 | syms_from_objfile_1 (struct objfile *objfile, | |
971 | struct section_addr_info *addrs, | |
b15cc25c | 972 | symfile_add_flags add_flags) |
c906108c | 973 | { |
a39a16c4 | 974 | struct section_addr_info *local_addr = NULL; |
c906108c | 975 | struct cleanup *old_chain; |
7eedccfa | 976 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 977 | |
8fb8eb5c | 978 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
c906108c | 979 | |
75245b24 | 980 | if (objfile->sf == NULL) |
36e4d068 JB |
981 | { |
982 | /* No symbols to load, but we still need to make sure | |
983 | that the section_offsets table is allocated. */ | |
d445b2f6 | 984 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
a7bfba49 | 985 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_sections); |
36e4d068 JB |
986 | |
987 | objfile->num_sections = num_sections; | |
988 | objfile->section_offsets | |
224c3ddb SM |
989 | = (struct section_offsets *) obstack_alloc (&objfile->objfile_obstack, |
990 | size); | |
36e4d068 JB |
991 | memset (objfile->section_offsets, 0, size); |
992 | return; | |
993 | } | |
75245b24 | 994 | |
c906108c SS |
995 | /* Make sure that partially constructed symbol tables will be cleaned up |
996 | if an error occurs during symbol reading. */ | |
ed2b3126 TT |
997 | old_chain = make_cleanup (null_cleanup, NULL); |
998 | std::unique_ptr<struct objfile> objfile_holder (objfile); | |
c906108c | 999 | |
6bf667bb DE |
1000 | /* If ADDRS is NULL, put together a dummy address list. |
1001 | We now establish the convention that an addr of zero means | |
c378eb4e | 1002 | no load address was specified. */ |
6bf667bb | 1003 | if (! addrs) |
a39a16c4 | 1004 | { |
d445b2f6 | 1005 | local_addr = alloc_section_addr_info (1); |
a39a16c4 MM |
1006 | make_cleanup (xfree, local_addr); |
1007 | addrs = local_addr; | |
1008 | } | |
1009 | ||
c5aa993b | 1010 | if (mainline) |
c906108c SS |
1011 | { |
1012 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 1013 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 1014 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
1015 | |
1016 | /* Since no error yet, throw away the old symbol table. */ | |
1017 | ||
1018 | if (symfile_objfile != NULL) | |
1019 | { | |
9e86da07 | 1020 | delete symfile_objfile; |
adb7f338 | 1021 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
1022 | } |
1023 | ||
1024 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
1025 | If the user wants to get rid of them, they should do "symbol-file" |
1026 | without arguments first. Not sure this is the best behavior | |
1027 | (PR 2207). */ | |
c906108c | 1028 | |
c5aa993b | 1029 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
1030 | } |
1031 | ||
1032 | /* Convert addr into an offset rather than an absolute address. | |
1033 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 1034 | and assume that <addr> is where that got loaded. |
c906108c | 1035 | |
53a5351d JM |
1036 | We no longer warn if the lowest section is not a text segment (as |
1037 | happens for the PA64 port. */ | |
6bf667bb | 1038 | if (addrs->num_sections > 0) |
75242ef4 | 1039 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
1040 | |
1041 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
1042 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 1043 | initial symbol reading for this file. */ |
c906108c | 1044 | |
c5aa993b | 1045 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 1046 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 1047 | |
6bf667bb | 1048 | (*objfile->sf->sym_offsets) (objfile, addrs); |
c906108c | 1049 | |
608e2dbb | 1050 | read_symbols (objfile, add_flags); |
b11896a5 | 1051 | |
c906108c SS |
1052 | /* Discard cleanups as symbol reading was successful. */ |
1053 | ||
ed2b3126 | 1054 | objfile_holder.release (); |
c906108c | 1055 | discard_cleanups (old_chain); |
f7545552 | 1056 | xfree (local_addr); |
c906108c SS |
1057 | } |
1058 | ||
36e4d068 JB |
1059 | /* Same as syms_from_objfile_1, but also initializes the objfile |
1060 | entry-point info. */ | |
1061 | ||
6bf667bb | 1062 | static void |
36e4d068 JB |
1063 | syms_from_objfile (struct objfile *objfile, |
1064 | struct section_addr_info *addrs, | |
b15cc25c | 1065 | symfile_add_flags add_flags) |
36e4d068 | 1066 | { |
6bf667bb | 1067 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
1068 | init_entry_point_info (objfile); |
1069 | } | |
1070 | ||
c906108c SS |
1071 | /* Perform required actions after either reading in the initial |
1072 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1073 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1074 | |
e7d52ed3 | 1075 | static void |
b15cc25c | 1076 | finish_new_objfile (struct objfile *objfile, symfile_add_flags add_flags) |
c906108c | 1077 | { |
c906108c | 1078 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1079 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1080 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1081 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1082 | { |
1083 | /* OK, make it the "real" symbol file. */ | |
1084 | symfile_objfile = objfile; | |
1085 | ||
c1e56572 | 1086 | clear_symtab_users (add_flags); |
c906108c | 1087 | } |
7eedccfa | 1088 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1089 | { |
69de3c6a | 1090 | breakpoint_re_set (); |
c906108c SS |
1091 | } |
1092 | ||
1093 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 1094 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
1095 | } |
1096 | ||
1097 | /* Process a symbol file, as either the main file or as a dynamically | |
1098 | loaded file. | |
1099 | ||
5417f6dc | 1100 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1101 | A new reference is acquired by this function. |
7904e09f | 1102 | |
9e86da07 | 1103 | For NAME description see the objfile constructor. |
24ba069a | 1104 | |
7eedccfa PP |
1105 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1106 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f | 1107 | |
6bf667bb | 1108 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1109 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1110 | |
63524580 JK |
1111 | PARENT is the original objfile if ABFD is a separate debug info file. |
1112 | Otherwise PARENT is NULL. | |
1113 | ||
c906108c | 1114 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1115 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1116 | |
7904e09f | 1117 | static struct objfile * |
b15cc25c PA |
1118 | symbol_file_add_with_addrs (bfd *abfd, const char *name, |
1119 | symfile_add_flags add_flags, | |
6bf667bb | 1120 | struct section_addr_info *addrs, |
b15cc25c | 1121 | objfile_flags flags, struct objfile *parent) |
c906108c SS |
1122 | { |
1123 | struct objfile *objfile; | |
7eedccfa | 1124 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1125 | const int mainline = add_flags & SYMFILE_MAINLINE; |
770e7fc7 | 1126 | const int should_print = (print_symbol_loading_p (from_tty, mainline, 1) |
b11896a5 TT |
1127 | && (readnow_symbol_files |
1128 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1129 | |
9291a0cd | 1130 | if (readnow_symbol_files) |
b11896a5 TT |
1131 | { |
1132 | flags |= OBJF_READNOW; | |
1133 | add_flags &= ~SYMFILE_NO_READ; | |
1134 | } | |
97cbe998 SDJ |
1135 | else if (readnever_symbol_files |
1136 | || (parent != NULL && (parent->flags & OBJF_READNEVER))) | |
1137 | { | |
1138 | flags |= OBJF_READNEVER; | |
1139 | add_flags |= SYMFILE_NO_READ; | |
1140 | } | |
9291a0cd | 1141 | |
5417f6dc RM |
1142 | /* Give user a chance to burp if we'd be |
1143 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1144 | |
1145 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1146 | && mainline |
c906108c | 1147 | && from_tty |
9e2f0ad4 | 1148 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1149 | error (_("Not confirmed.")); |
c906108c | 1150 | |
b15cc25c PA |
1151 | if (mainline) |
1152 | flags |= OBJF_MAINLINE; | |
9e86da07 | 1153 | objfile = new struct objfile (abfd, name, flags); |
c906108c | 1154 | |
63524580 JK |
1155 | if (parent) |
1156 | add_separate_debug_objfile (objfile, parent); | |
1157 | ||
78a4a9b9 AC |
1158 | /* We either created a new mapped symbol table, mapped an existing |
1159 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1160 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1161 | if (should_print) |
c906108c | 1162 | { |
769d7dc4 AC |
1163 | if (deprecated_pre_add_symbol_hook) |
1164 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1165 | else |
c906108c | 1166 | { |
55333a84 DE |
1167 | printf_unfiltered (_("Reading symbols from %s..."), name); |
1168 | wrap_here (""); | |
1169 | gdb_flush (gdb_stdout); | |
c906108c | 1170 | } |
c906108c | 1171 | } |
6bf667bb | 1172 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1173 | |
1174 | /* We now have at least a partial symbol table. Check to see if the | |
1175 | user requested that all symbols be read on initial access via either | |
1176 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1177 | all partial symbol tables for this objfile if so. */ |
c906108c | 1178 | |
9291a0cd | 1179 | if ((flags & OBJF_READNOW)) |
c906108c | 1180 | { |
b11896a5 | 1181 | if (should_print) |
c906108c | 1182 | { |
a3f17187 | 1183 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1184 | wrap_here (""); |
1185 | gdb_flush (gdb_stdout); | |
1186 | } | |
1187 | ||
ccefe4c4 TT |
1188 | if (objfile->sf) |
1189 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1190 | } |
1191 | ||
b11896a5 | 1192 | if (should_print && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1193 | { |
1194 | wrap_here (""); | |
55333a84 | 1195 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1196 | wrap_here (""); |
1197 | } | |
1198 | ||
b11896a5 | 1199 | if (should_print) |
c906108c | 1200 | { |
769d7dc4 AC |
1201 | if (deprecated_post_add_symbol_hook) |
1202 | deprecated_post_add_symbol_hook (); | |
c906108c | 1203 | else |
55333a84 | 1204 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1205 | } |
1206 | ||
481d0f41 JB |
1207 | /* We print some messages regardless of whether 'from_tty || |
1208 | info_verbose' is true, so make sure they go out at the right | |
1209 | time. */ | |
1210 | gdb_flush (gdb_stdout); | |
1211 | ||
109f874e | 1212 | if (objfile->sf == NULL) |
8caee43b PP |
1213 | { |
1214 | observer_notify_new_objfile (objfile); | |
c378eb4e | 1215 | return objfile; /* No symbols. */ |
8caee43b | 1216 | } |
109f874e | 1217 | |
e7d52ed3 | 1218 | finish_new_objfile (objfile, add_flags); |
c906108c | 1219 | |
06d3b283 | 1220 | observer_notify_new_objfile (objfile); |
c906108c | 1221 | |
ce7d4522 | 1222 | bfd_cache_close_all (); |
c906108c SS |
1223 | return (objfile); |
1224 | } | |
1225 | ||
24ba069a | 1226 | /* Add BFD as a separate debug file for OBJFILE. For NAME description |
9e86da07 | 1227 | see the objfile constructor. */ |
9cce227f TG |
1228 | |
1229 | void | |
b15cc25c PA |
1230 | symbol_file_add_separate (bfd *bfd, const char *name, |
1231 | symfile_add_flags symfile_flags, | |
24ba069a | 1232 | struct objfile *objfile) |
9cce227f | 1233 | { |
089b4803 TG |
1234 | struct section_addr_info *sap; |
1235 | struct cleanup *my_cleanup; | |
1236 | ||
1237 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1238 | because sections of BFD may not match sections of OBJFILE and because | |
1239 | vma may have been modified by tools such as prelink. */ | |
1240 | sap = build_section_addr_info_from_objfile (objfile); | |
1241 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1242 | |
870f88f7 | 1243 | symbol_file_add_with_addrs |
24ba069a | 1244 | (bfd, name, symfile_flags, sap, |
9cce227f | 1245 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1246 | | OBJF_USERLOADED), |
1247 | objfile); | |
089b4803 TG |
1248 | |
1249 | do_cleanups (my_cleanup); | |
9cce227f | 1250 | } |
7904e09f | 1251 | |
eb4556d7 JB |
1252 | /* Process the symbol file ABFD, as either the main file or as a |
1253 | dynamically loaded file. | |
6bf667bb | 1254 | See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1255 | |
eb4556d7 | 1256 | struct objfile * |
b15cc25c PA |
1257 | symbol_file_add_from_bfd (bfd *abfd, const char *name, |
1258 | symfile_add_flags add_flags, | |
eb4556d7 | 1259 | struct section_addr_info *addrs, |
b15cc25c | 1260 | objfile_flags flags, struct objfile *parent) |
eb4556d7 | 1261 | { |
24ba069a JK |
1262 | return symbol_file_add_with_addrs (abfd, name, add_flags, addrs, flags, |
1263 | parent); | |
eb4556d7 JB |
1264 | } |
1265 | ||
7904e09f | 1266 | /* Process a symbol file, as either the main file or as a dynamically |
6bf667bb | 1267 | loaded file. See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1268 | |
7904e09f | 1269 | struct objfile * |
b15cc25c PA |
1270 | symbol_file_add (const char *name, symfile_add_flags add_flags, |
1271 | struct section_addr_info *addrs, objfile_flags flags) | |
7904e09f | 1272 | { |
192b62ce | 1273 | gdb_bfd_ref_ptr bfd (symfile_bfd_open (name)); |
8ac244b4 | 1274 | |
192b62ce TT |
1275 | return symbol_file_add_from_bfd (bfd.get (), name, add_flags, addrs, |
1276 | flags, NULL); | |
7904e09f JB |
1277 | } |
1278 | ||
d7db6da9 FN |
1279 | /* Call symbol_file_add() with default values and update whatever is |
1280 | affected by the loading of a new main(). | |
1281 | Used when the file is supplied in the gdb command line | |
1282 | and by some targets with special loading requirements. | |
1283 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1284 | argument for the switches that can only be specified in the symbol_file | |
1285 | command itself. */ | |
5417f6dc | 1286 | |
1adeb98a | 1287 | void |
ecf45d2c | 1288 | symbol_file_add_main (const char *args, symfile_add_flags add_flags) |
1adeb98a | 1289 | { |
ecf45d2c | 1290 | symbol_file_add_main_1 (args, add_flags, 0); |
d7db6da9 FN |
1291 | } |
1292 | ||
1293 | static void | |
ecf45d2c SL |
1294 | symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
1295 | objfile_flags flags) | |
d7db6da9 | 1296 | { |
ecf45d2c | 1297 | add_flags |= current_inferior ()->symfile_flags | SYMFILE_MAINLINE; |
7dcd53a0 | 1298 | |
7eedccfa | 1299 | symbol_file_add (args, add_flags, NULL, flags); |
d7db6da9 | 1300 | |
d7db6da9 FN |
1301 | /* Getting new symbols may change our opinion about |
1302 | what is frameless. */ | |
1303 | reinit_frame_cache (); | |
1304 | ||
b15cc25c | 1305 | if ((add_flags & SYMFILE_NO_READ) == 0) |
7dcd53a0 | 1306 | set_initial_language (); |
1adeb98a FN |
1307 | } |
1308 | ||
1309 | void | |
1310 | symbol_file_clear (int from_tty) | |
1311 | { | |
1312 | if ((have_full_symbols () || have_partial_symbols ()) | |
1313 | && from_tty | |
0430b0d6 AS |
1314 | && (symfile_objfile |
1315 | ? !query (_("Discard symbol table from `%s'? "), | |
4262abfb | 1316 | objfile_name (symfile_objfile)) |
0430b0d6 | 1317 | : !query (_("Discard symbol table? ")))) |
8a3fe4f8 | 1318 | error (_("Not confirmed.")); |
1adeb98a | 1319 | |
0133421a JK |
1320 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1321 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1322 | no_shared_libraries (NULL, from_tty); |
1323 | ||
0133421a JK |
1324 | free_all_objfiles (); |
1325 | ||
adb7f338 | 1326 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1327 | if (from_tty) |
1328 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1329 | } |
1330 | ||
c4dcb155 SM |
1331 | /* See symfile.h. */ |
1332 | ||
1333 | int separate_debug_file_debug = 0; | |
1334 | ||
5b5d99cf | 1335 | static int |
287ccc17 | 1336 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1337 | struct objfile *parent_objfile) |
5b5d99cf | 1338 | { |
904578ed JK |
1339 | unsigned long file_crc; |
1340 | int file_crc_p; | |
32a0e547 | 1341 | struct stat parent_stat, abfd_stat; |
904578ed | 1342 | int verified_as_different; |
32a0e547 JK |
1343 | |
1344 | /* Find a separate debug info file as if symbols would be present in | |
1345 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1346 | section can contain just the basename of PARENT_OBJFILE without any | |
1347 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1348 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1349 | |
4262abfb | 1350 | if (filename_cmp (name, objfile_name (parent_objfile)) == 0) |
32a0e547 | 1351 | return 0; |
5b5d99cf | 1352 | |
c4dcb155 SM |
1353 | if (separate_debug_file_debug) |
1354 | printf_unfiltered (_(" Trying %s\n"), name); | |
1355 | ||
192b62ce | 1356 | gdb_bfd_ref_ptr abfd (gdb_bfd_open (name, gnutarget, -1)); |
f1838a98 | 1357 | |
192b62ce | 1358 | if (abfd == NULL) |
5b5d99cf JB |
1359 | return 0; |
1360 | ||
0ba1096a | 1361 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1362 | |
1363 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1364 | st_ino; they always set it to zero. (Windows does provide a | |
0a93529c GB |
1365 | meaningful st_dev.) Files accessed from gdbservers that do not |
1366 | support the vFile:fstat packet will also have st_ino set to zero. | |
1367 | Do not indicate a duplicate library in either case. While there | |
1368 | is no guarantee that a system that provides meaningful inode | |
1369 | numbers will never set st_ino to zero, this is merely an | |
1370 | optimization, so we do not need to worry about false negatives. */ | |
32a0e547 | 1371 | |
192b62ce | 1372 | if (bfd_stat (abfd.get (), &abfd_stat) == 0 |
904578ed JK |
1373 | && abfd_stat.st_ino != 0 |
1374 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1375 | { |
904578ed JK |
1376 | if (abfd_stat.st_dev == parent_stat.st_dev |
1377 | && abfd_stat.st_ino == parent_stat.st_ino) | |
192b62ce | 1378 | return 0; |
904578ed | 1379 | verified_as_different = 1; |
32a0e547 | 1380 | } |
904578ed JK |
1381 | else |
1382 | verified_as_different = 0; | |
32a0e547 | 1383 | |
192b62ce | 1384 | file_crc_p = gdb_bfd_crc (abfd.get (), &file_crc); |
5b5d99cf | 1385 | |
904578ed JK |
1386 | if (!file_crc_p) |
1387 | return 0; | |
1388 | ||
287ccc17 JK |
1389 | if (crc != file_crc) |
1390 | { | |
dccee2de TT |
1391 | unsigned long parent_crc; |
1392 | ||
0a93529c GB |
1393 | /* If the files could not be verified as different with |
1394 | bfd_stat then we need to calculate the parent's CRC | |
1395 | to verify whether the files are different or not. */ | |
904578ed | 1396 | |
dccee2de | 1397 | if (!verified_as_different) |
904578ed | 1398 | { |
dccee2de | 1399 | if (!gdb_bfd_crc (parent_objfile->obfd, &parent_crc)) |
904578ed JK |
1400 | return 0; |
1401 | } | |
1402 | ||
dccee2de | 1403 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1404 | warning (_("the debug information found in \"%s\"" |
1405 | " does not match \"%s\" (CRC mismatch).\n"), | |
4262abfb | 1406 | name, objfile_name (parent_objfile)); |
904578ed | 1407 | |
287ccc17 JK |
1408 | return 0; |
1409 | } | |
1410 | ||
1411 | return 1; | |
5b5d99cf JB |
1412 | } |
1413 | ||
aa28a74e | 1414 | char *debug_file_directory = NULL; |
920d2a44 AC |
1415 | static void |
1416 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1417 | struct cmd_list_element *c, const char *value) | |
1418 | { | |
3e43a32a MS |
1419 | fprintf_filtered (file, |
1420 | _("The directory where separate debug " | |
1421 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1422 | value); |
1423 | } | |
5b5d99cf JB |
1424 | |
1425 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1426 | #define DEBUG_SUBDIRECTORY ".debug" | |
1427 | #endif | |
1428 | ||
1db33378 PP |
1429 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1430 | where the original file resides (may not be the same as | |
1431 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1432 | looking for. CANON_DIR is the "realpath" form of DIR. |
1433 | DIR must contain a trailing '/'. | |
1434 | Returns the path of the file with separate debug info, of NULL. */ | |
1db33378 PP |
1435 | |
1436 | static char * | |
1437 | find_separate_debug_file (const char *dir, | |
1438 | const char *canon_dir, | |
1439 | const char *debuglink, | |
1440 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1441 | { |
1db33378 PP |
1442 | char *debugdir; |
1443 | char *debugfile; | |
9cce227f | 1444 | int i; |
e4ab2fad JK |
1445 | VEC (char_ptr) *debugdir_vec; |
1446 | struct cleanup *back_to; | |
1447 | int ix; | |
5b5d99cf | 1448 | |
c4dcb155 SM |
1449 | if (separate_debug_file_debug) |
1450 | printf_unfiltered (_("\nLooking for separate debug info (debug link) for " | |
1451 | "%s\n"), objfile_name (objfile)); | |
1452 | ||
325fac50 | 1453 | /* Set I to std::max (strlen (canon_dir), strlen (dir)). */ |
1ffa32ee | 1454 | i = strlen (dir); |
1db33378 PP |
1455 | if (canon_dir != NULL && strlen (canon_dir) > i) |
1456 | i = strlen (canon_dir); | |
1ffa32ee | 1457 | |
224c3ddb SM |
1458 | debugfile |
1459 | = (char *) xmalloc (strlen (debug_file_directory) + 1 | |
1460 | + i | |
1461 | + strlen (DEBUG_SUBDIRECTORY) | |
1462 | + strlen ("/") | |
1463 | + strlen (debuglink) | |
1464 | + 1); | |
5b5d99cf JB |
1465 | |
1466 | /* First try in the same directory as the original file. */ | |
1467 | strcpy (debugfile, dir); | |
1db33378 | 1468 | strcat (debugfile, debuglink); |
5b5d99cf | 1469 | |
32a0e547 | 1470 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1471 | return debugfile; |
5417f6dc | 1472 | |
5b5d99cf JB |
1473 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1474 | strcpy (debugfile, dir); | |
1475 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1476 | strcat (debugfile, "/"); | |
1db33378 | 1477 | strcat (debugfile, debuglink); |
5b5d99cf | 1478 | |
32a0e547 | 1479 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1480 | return debugfile; |
5417f6dc | 1481 | |
24ddea62 | 1482 | /* Then try in the global debugfile directories. |
f888f159 | 1483 | |
24ddea62 JK |
1484 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1485 | cause "/..." lookups. */ | |
5417f6dc | 1486 | |
e4ab2fad JK |
1487 | debugdir_vec = dirnames_to_char_ptr_vec (debug_file_directory); |
1488 | back_to = make_cleanup_free_char_ptr_vec (debugdir_vec); | |
24ddea62 | 1489 | |
e4ab2fad JK |
1490 | for (ix = 0; VEC_iterate (char_ptr, debugdir_vec, ix, debugdir); ++ix) |
1491 | { | |
1492 | strcpy (debugfile, debugdir); | |
aa28a74e | 1493 | strcat (debugfile, "/"); |
24ddea62 | 1494 | strcat (debugfile, dir); |
1db33378 | 1495 | strcat (debugfile, debuglink); |
aa28a74e | 1496 | |
32a0e547 | 1497 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
a991ac28 TT |
1498 | { |
1499 | do_cleanups (back_to); | |
1500 | return debugfile; | |
1501 | } | |
24ddea62 JK |
1502 | |
1503 | /* If the file is in the sysroot, try using its base path in the | |
1504 | global debugfile directory. */ | |
1db33378 PP |
1505 | if (canon_dir != NULL |
1506 | && filename_ncmp (canon_dir, gdb_sysroot, | |
0ba1096a | 1507 | strlen (gdb_sysroot)) == 0 |
1db33378 | 1508 | && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)])) |
24ddea62 | 1509 | { |
e4ab2fad | 1510 | strcpy (debugfile, debugdir); |
1db33378 | 1511 | strcat (debugfile, canon_dir + strlen (gdb_sysroot)); |
24ddea62 | 1512 | strcat (debugfile, "/"); |
1db33378 | 1513 | strcat (debugfile, debuglink); |
24ddea62 | 1514 | |
32a0e547 | 1515 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
a991ac28 TT |
1516 | { |
1517 | do_cleanups (back_to); | |
1518 | return debugfile; | |
1519 | } | |
24ddea62 | 1520 | } |
aa28a74e | 1521 | } |
f888f159 | 1522 | |
e4ab2fad | 1523 | do_cleanups (back_to); |
25522fae | 1524 | xfree (debugfile); |
1db33378 PP |
1525 | return NULL; |
1526 | } | |
1527 | ||
7edbb660 | 1528 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1529 | If there were no directory separators in PATH, PATH will be empty |
1530 | string on return. */ | |
1531 | ||
1532 | static void | |
1533 | terminate_after_last_dir_separator (char *path) | |
1534 | { | |
1535 | int i; | |
1536 | ||
1537 | /* Strip off the final filename part, leaving the directory name, | |
1538 | followed by a slash. The directory can be relative or absolute. */ | |
1539 | for (i = strlen(path) - 1; i >= 0; i--) | |
1540 | if (IS_DIR_SEPARATOR (path[i])) | |
1541 | break; | |
1542 | ||
1543 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1544 | path[i + 1] = '\0'; | |
1545 | } | |
1546 | ||
1547 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
1548 | Returns pathname, or NULL. */ | |
1549 | ||
1550 | char * | |
1551 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1552 | { | |
1db33378 PP |
1553 | char *debugfile; |
1554 | unsigned long crc32; | |
1db33378 | 1555 | |
5eae7aea TT |
1556 | gdb::unique_xmalloc_ptr<char> debuglink |
1557 | (bfd_get_debug_link_info (objfile->obfd, &crc32)); | |
1db33378 PP |
1558 | |
1559 | if (debuglink == NULL) | |
1560 | { | |
1561 | /* There's no separate debug info, hence there's no way we could | |
1562 | load it => no warning. */ | |
1563 | return NULL; | |
1564 | } | |
1565 | ||
5eae7aea TT |
1566 | std::string dir = objfile_name (objfile); |
1567 | terminate_after_last_dir_separator (&dir[0]); | |
1568 | gdb::unique_xmalloc_ptr<char> canon_dir (lrealpath (dir.c_str ())); | |
1db33378 | 1569 | |
5eae7aea TT |
1570 | debugfile = find_separate_debug_file (dir.c_str (), canon_dir.get (), |
1571 | debuglink.get (), crc32, objfile); | |
1db33378 PP |
1572 | |
1573 | if (debugfile == NULL) | |
1574 | { | |
1db33378 PP |
1575 | /* For PR gdb/9538, try again with realpath (if different from the |
1576 | original). */ | |
1577 | ||
1578 | struct stat st_buf; | |
1579 | ||
4262abfb JK |
1580 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1581 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 | 1582 | { |
5eae7aea TT |
1583 | gdb::unique_xmalloc_ptr<char> symlink_dir |
1584 | (lrealpath (objfile_name (objfile))); | |
1db33378 PP |
1585 | if (symlink_dir != NULL) |
1586 | { | |
5eae7aea TT |
1587 | terminate_after_last_dir_separator (symlink_dir.get ()); |
1588 | if (dir != symlink_dir.get ()) | |
1db33378 PP |
1589 | { |
1590 | /* Different directory, so try using it. */ | |
5eae7aea TT |
1591 | debugfile = find_separate_debug_file (symlink_dir.get (), |
1592 | symlink_dir.get (), | |
1593 | debuglink.get (), | |
1db33378 PP |
1594 | crc32, |
1595 | objfile); | |
1596 | } | |
1597 | } | |
1598 | } | |
1db33378 | 1599 | } |
aa28a74e | 1600 | |
25522fae | 1601 | return debugfile; |
5b5d99cf JB |
1602 | } |
1603 | ||
97cbe998 SDJ |
1604 | /* Make sure that OBJF_{READNOW,READNEVER} are not set |
1605 | simultaneously. */ | |
1606 | ||
1607 | static void | |
1608 | validate_readnow_readnever (objfile_flags flags) | |
1609 | { | |
1610 | if ((flags & OBJF_READNOW) && (flags & OBJF_READNEVER)) | |
1611 | error (_("-readnow and -readnever cannot be used simultaneously")); | |
1612 | } | |
1613 | ||
c906108c SS |
1614 | /* This is the symbol-file command. Read the file, analyze its |
1615 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1616 | the command is rather bizarre: |
1617 | ||
1618 | 1. The function buildargv implements various quoting conventions | |
1619 | which are undocumented and have little or nothing in common with | |
1620 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1621 | ||
1622 | 2. Options are used, which are not generally used in GDB (perhaps | |
1623 | "set mapped on", "set readnow on" would be better) | |
1624 | ||
1625 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1626 | conventions (because it is confusing and inconvenient). */ |
1627 | ||
1628 | void | |
1d8b34a7 | 1629 | symbol_file_command (const char *args, int from_tty) |
c906108c | 1630 | { |
c906108c SS |
1631 | dont_repeat (); |
1632 | ||
1633 | if (args == NULL) | |
1634 | { | |
1adeb98a | 1635 | symbol_file_clear (from_tty); |
c906108c SS |
1636 | } |
1637 | else | |
1638 | { | |
b15cc25c | 1639 | objfile_flags flags = OBJF_USERLOADED; |
ecf45d2c | 1640 | symfile_add_flags add_flags = 0; |
cb2f3a29 | 1641 | char *name = NULL; |
40fc416f SDJ |
1642 | bool stop_processing_options = false; |
1643 | int idx; | |
1644 | char *arg; | |
cb2f3a29 | 1645 | |
ecf45d2c SL |
1646 | if (from_tty) |
1647 | add_flags |= SYMFILE_VERBOSE; | |
1648 | ||
773a1edc | 1649 | gdb_argv built_argv (args); |
40fc416f | 1650 | for (arg = built_argv[0], idx = 0; arg != NULL; arg = built_argv[++idx]) |
c906108c | 1651 | { |
40fc416f | 1652 | if (stop_processing_options || *arg != '-') |
7f0f8ac8 | 1653 | { |
40fc416f SDJ |
1654 | if (name == NULL) |
1655 | name = arg; | |
1656 | else | |
1657 | error (_("Unrecognized argument \"%s\""), arg); | |
7f0f8ac8 | 1658 | } |
40fc416f SDJ |
1659 | else if (strcmp (arg, "-readnow") == 0) |
1660 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
1661 | else if (strcmp (arg, "-readnever") == 0) |
1662 | flags |= OBJF_READNEVER; | |
40fc416f SDJ |
1663 | else if (strcmp (arg, "--") == 0) |
1664 | stop_processing_options = true; | |
1665 | else | |
1666 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c SS |
1667 | } |
1668 | ||
1669 | if (name == NULL) | |
cb2f3a29 | 1670 | error (_("no symbol file name was specified")); |
40fc416f | 1671 | |
97cbe998 SDJ |
1672 | validate_readnow_readnever (flags); |
1673 | ||
40fc416f | 1674 | symbol_file_add_main_1 (name, add_flags, flags); |
c906108c SS |
1675 | } |
1676 | } | |
1677 | ||
1678 | /* Set the initial language. | |
1679 | ||
cb2f3a29 MK |
1680 | FIXME: A better solution would be to record the language in the |
1681 | psymtab when reading partial symbols, and then use it (if known) to | |
1682 | set the language. This would be a win for formats that encode the | |
1683 | language in an easily discoverable place, such as DWARF. For | |
1684 | stabs, we can jump through hoops looking for specially named | |
1685 | symbols or try to intuit the language from the specific type of | |
1686 | stabs we find, but we can't do that until later when we read in | |
1687 | full symbols. */ | |
c906108c | 1688 | |
8b60591b | 1689 | void |
fba45db2 | 1690 | set_initial_language (void) |
c906108c | 1691 | { |
9e6c82ad | 1692 | enum language lang = main_language (); |
c906108c | 1693 | |
9e6c82ad | 1694 | if (lang == language_unknown) |
01f8c46d | 1695 | { |
bf6d8a91 | 1696 | char *name = main_name (); |
d12307c1 | 1697 | struct symbol *sym = lookup_symbol (name, NULL, VAR_DOMAIN, NULL).symbol; |
f888f159 | 1698 | |
bf6d8a91 TT |
1699 | if (sym != NULL) |
1700 | lang = SYMBOL_LANGUAGE (sym); | |
01f8c46d | 1701 | } |
cb2f3a29 | 1702 | |
ccefe4c4 TT |
1703 | if (lang == language_unknown) |
1704 | { | |
1705 | /* Make C the default language */ | |
1706 | lang = language_c; | |
c906108c | 1707 | } |
ccefe4c4 TT |
1708 | |
1709 | set_language (lang); | |
1710 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1711 | } |
1712 | ||
cb2f3a29 MK |
1713 | /* Open the file specified by NAME and hand it off to BFD for |
1714 | preliminary analysis. Return a newly initialized bfd *, which | |
1715 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1716 | absolute). In case of trouble, error() is called. */ | |
c906108c | 1717 | |
192b62ce | 1718 | gdb_bfd_ref_ptr |
97a41605 | 1719 | symfile_bfd_open (const char *name) |
c906108c | 1720 | { |
97a41605 GB |
1721 | int desc = -1; |
1722 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
c906108c | 1723 | |
97a41605 | 1724 | if (!is_target_filename (name)) |
f1838a98 | 1725 | { |
ee0c3293 | 1726 | char *absolute_name; |
f1838a98 | 1727 | |
ee0c3293 | 1728 | gdb::unique_xmalloc_ptr<char> expanded_name (tilde_expand (name)); |
c906108c | 1729 | |
97a41605 GB |
1730 | /* Look down path for it, allocate 2nd new malloc'd copy. */ |
1731 | desc = openp (getenv ("PATH"), | |
1732 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
ee0c3293 | 1733 | expanded_name.get (), O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1734 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
97a41605 GB |
1735 | if (desc < 0) |
1736 | { | |
ee0c3293 | 1737 | char *exename = (char *) alloca (strlen (expanded_name.get ()) + 5); |
433759f7 | 1738 | |
ee0c3293 | 1739 | strcat (strcpy (exename, expanded_name.get ()), ".exe"); |
97a41605 GB |
1740 | desc = openp (getenv ("PATH"), |
1741 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
1742 | exename, O_RDONLY | O_BINARY, &absolute_name); | |
1743 | } | |
c906108c | 1744 | #endif |
97a41605 | 1745 | if (desc < 0) |
ee0c3293 | 1746 | perror_with_name (expanded_name.get ()); |
cb2f3a29 | 1747 | |
97a41605 GB |
1748 | make_cleanup (xfree, absolute_name); |
1749 | name = absolute_name; | |
1750 | } | |
c906108c | 1751 | |
192b62ce TT |
1752 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (name, gnutarget, desc)); |
1753 | if (sym_bfd == NULL) | |
faab9922 JK |
1754 | error (_("`%s': can't open to read symbols: %s."), name, |
1755 | bfd_errmsg (bfd_get_error ())); | |
97a41605 | 1756 | |
192b62ce TT |
1757 | if (!gdb_bfd_has_target_filename (sym_bfd.get ())) |
1758 | bfd_set_cacheable (sym_bfd.get (), 1); | |
c906108c | 1759 | |
192b62ce TT |
1760 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
1761 | error (_("`%s': can't read symbols: %s."), name, | |
1762 | bfd_errmsg (bfd_get_error ())); | |
cb2f3a29 | 1763 | |
faab9922 JK |
1764 | do_cleanups (back_to); |
1765 | ||
cb2f3a29 | 1766 | return sym_bfd; |
c906108c SS |
1767 | } |
1768 | ||
cb2f3a29 MK |
1769 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1770 | the section was not found. */ | |
1771 | ||
0e931cf0 | 1772 | int |
a121b7c1 | 1773 | get_section_index (struct objfile *objfile, const char *section_name) |
0e931cf0 JB |
1774 | { |
1775 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1776 | |
0e931cf0 JB |
1777 | if (sect) |
1778 | return sect->index; | |
1779 | else | |
1780 | return -1; | |
1781 | } | |
1782 | ||
c256e171 DE |
1783 | /* Link SF into the global symtab_fns list. |
1784 | FLAVOUR is the file format that SF handles. | |
1785 | Called on startup by the _initialize routine in each object file format | |
1786 | reader, to register information about each format the reader is prepared | |
1787 | to handle. */ | |
c906108c SS |
1788 | |
1789 | void | |
c256e171 | 1790 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1791 | { |
905014d7 | 1792 | symtab_fns.emplace_back (flavour, sf); |
c906108c SS |
1793 | } |
1794 | ||
cb2f3a29 MK |
1795 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1796 | either returns or calls error(). The result is an initialized | |
1797 | struct sym_fns in the objfile structure, that contains cached | |
1798 | information about the symbol file. */ | |
c906108c | 1799 | |
00b5771c | 1800 | static const struct sym_fns * |
31d99776 | 1801 | find_sym_fns (bfd *abfd) |
c906108c | 1802 | { |
31d99776 | 1803 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1804 | |
75245b24 MS |
1805 | if (our_flavour == bfd_target_srec_flavour |
1806 | || our_flavour == bfd_target_ihex_flavour | |
1807 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1808 | return NULL; /* No symbols. */ |
75245b24 | 1809 | |
905014d7 SM |
1810 | for (const registered_sym_fns &rsf : symtab_fns) |
1811 | if (our_flavour == rsf.sym_flavour) | |
1812 | return rsf.sym_fns; | |
cb2f3a29 | 1813 | |
8a3fe4f8 | 1814 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1815 | bfd_get_target (abfd)); |
c906108c SS |
1816 | } |
1817 | \f | |
cb2f3a29 | 1818 | |
c906108c SS |
1819 | /* This function runs the load command of our current target. */ |
1820 | ||
1821 | static void | |
5fed81ff | 1822 | load_command (const char *arg, int from_tty) |
c906108c | 1823 | { |
5b3fca71 TT |
1824 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
1825 | ||
e5cc9f32 JB |
1826 | dont_repeat (); |
1827 | ||
4487aabf PA |
1828 | /* The user might be reloading because the binary has changed. Take |
1829 | this opportunity to check. */ | |
1830 | reopen_exec_file (); | |
1831 | reread_symbols (); | |
1832 | ||
c906108c | 1833 | if (arg == NULL) |
1986bccd | 1834 | { |
5fed81ff | 1835 | const char *parg; |
1986bccd AS |
1836 | int count = 0; |
1837 | ||
1838 | parg = arg = get_exec_file (1); | |
1839 | ||
1840 | /* Count how many \ " ' tab space there are in the name. */ | |
1841 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1842 | { | |
1843 | parg++; | |
1844 | count++; | |
1845 | } | |
1846 | ||
1847 | if (count) | |
1848 | { | |
1849 | /* We need to quote this string so buildargv can pull it apart. */ | |
224c3ddb | 1850 | char *temp = (char *) xmalloc (strlen (arg) + count + 1 ); |
1986bccd | 1851 | char *ptemp = temp; |
5fed81ff | 1852 | const char *prev; |
1986bccd AS |
1853 | |
1854 | make_cleanup (xfree, temp); | |
1855 | ||
1856 | prev = parg = arg; | |
1857 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1858 | { | |
1859 | strncpy (ptemp, prev, parg - prev); | |
1860 | ptemp += parg - prev; | |
1861 | prev = parg++; | |
1862 | *ptemp++ = '\\'; | |
1863 | } | |
1864 | strcpy (ptemp, prev); | |
1865 | ||
1866 | arg = temp; | |
1867 | } | |
1868 | } | |
1869 | ||
c906108c | 1870 | target_load (arg, from_tty); |
2889e661 JB |
1871 | |
1872 | /* After re-loading the executable, we don't really know which | |
1873 | overlays are mapped any more. */ | |
1874 | overlay_cache_invalid = 1; | |
5b3fca71 TT |
1875 | |
1876 | do_cleanups (cleanup); | |
c906108c SS |
1877 | } |
1878 | ||
1879 | /* This version of "load" should be usable for any target. Currently | |
1880 | it is just used for remote targets, not inftarg.c or core files, | |
1881 | on the theory that only in that case is it useful. | |
1882 | ||
1883 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1884 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1885 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1886 | performance compares. */ | |
917317f4 | 1887 | |
917317f4 JM |
1888 | static int validate_download = 0; |
1889 | ||
e4f9b4d5 MS |
1890 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1891 | ||
1892 | static void | |
1893 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1894 | { | |
19ba03f4 | 1895 | bfd_size_type *sum = (bfd_size_type *) data; |
e4f9b4d5 | 1896 | |
2c500098 | 1897 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1898 | } |
1899 | ||
1900 | /* Opaque data for load_section_callback. */ | |
1901 | struct load_section_data { | |
f698ca8e | 1902 | CORE_ADDR load_offset; |
a76d924d DJ |
1903 | struct load_progress_data *progress_data; |
1904 | VEC(memory_write_request_s) *requests; | |
1905 | }; | |
1906 | ||
1907 | /* Opaque data for load_progress. */ | |
1908 | struct load_progress_data { | |
1909 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1910 | unsigned long write_count; |
1911 | unsigned long data_count; | |
1912 | bfd_size_type total_size; | |
a76d924d DJ |
1913 | }; |
1914 | ||
1915 | /* Opaque data for load_progress for a single section. */ | |
1916 | struct load_progress_section_data { | |
1917 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1918 | |
a76d924d | 1919 | /* Per-section data. */ |
cf7a04e8 DJ |
1920 | const char *section_name; |
1921 | ULONGEST section_sent; | |
1922 | ULONGEST section_size; | |
1923 | CORE_ADDR lma; | |
1924 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1925 | }; |
1926 | ||
a76d924d | 1927 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1928 | |
1929 | static void | |
1930 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1931 | { | |
19ba03f4 SM |
1932 | struct load_progress_section_data *args |
1933 | = (struct load_progress_section_data *) untyped_arg; | |
a76d924d DJ |
1934 | struct load_progress_data *totals; |
1935 | ||
1936 | if (args == NULL) | |
1937 | /* Writing padding data. No easy way to get at the cumulative | |
1938 | stats, so just ignore this. */ | |
1939 | return; | |
1940 | ||
1941 | totals = args->cumulative; | |
1942 | ||
1943 | if (bytes == 0 && args->section_sent == 0) | |
1944 | { | |
1945 | /* The write is just starting. Let the user know we've started | |
1946 | this section. */ | |
112e8700 SM |
1947 | current_uiout->message ("Loading section %s, size %s lma %s\n", |
1948 | args->section_name, | |
1949 | hex_string (args->section_size), | |
1950 | paddress (target_gdbarch (), args->lma)); | |
a76d924d DJ |
1951 | return; |
1952 | } | |
cf7a04e8 DJ |
1953 | |
1954 | if (validate_download) | |
1955 | { | |
1956 | /* Broken memories and broken monitors manifest themselves here | |
1957 | when bring new computers to life. This doubles already slow | |
1958 | downloads. */ | |
1959 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1960 | might add a verify_memory() method to the target vector and | |
1961 | then use that. remote.c could implement that method using | |
1962 | the ``qCRC'' packet. */ | |
0efef640 | 1963 | gdb::byte_vector check (bytes); |
cf7a04e8 | 1964 | |
0efef640 | 1965 | if (target_read_memory (args->lma, check.data (), bytes) != 0) |
5af949e3 | 1966 | error (_("Download verify read failed at %s"), |
f5656ead | 1967 | paddress (target_gdbarch (), args->lma)); |
0efef640 | 1968 | if (memcmp (args->buffer, check.data (), bytes) != 0) |
5af949e3 | 1969 | error (_("Download verify compare failed at %s"), |
f5656ead | 1970 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1971 | } |
a76d924d | 1972 | totals->data_count += bytes; |
cf7a04e8 DJ |
1973 | args->lma += bytes; |
1974 | args->buffer += bytes; | |
a76d924d | 1975 | totals->write_count += 1; |
cf7a04e8 | 1976 | args->section_sent += bytes; |
522002f9 | 1977 | if (check_quit_flag () |
cf7a04e8 DJ |
1978 | || (deprecated_ui_load_progress_hook != NULL |
1979 | && deprecated_ui_load_progress_hook (args->section_name, | |
1980 | args->section_sent))) | |
1981 | error (_("Canceled the download")); | |
1982 | ||
1983 | if (deprecated_show_load_progress != NULL) | |
1984 | deprecated_show_load_progress (args->section_name, | |
1985 | args->section_sent, | |
1986 | args->section_size, | |
a76d924d DJ |
1987 | totals->data_count, |
1988 | totals->total_size); | |
cf7a04e8 DJ |
1989 | } |
1990 | ||
e4f9b4d5 MS |
1991 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1992 | ||
1993 | static void | |
1994 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1995 | { | |
a76d924d | 1996 | struct memory_write_request *new_request; |
19ba03f4 | 1997 | struct load_section_data *args = (struct load_section_data *) data; |
a76d924d | 1998 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1999 | bfd_size_type size = bfd_get_section_size (asec); |
2000 | gdb_byte *buffer; | |
cf7a04e8 | 2001 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 2002 | |
cf7a04e8 DJ |
2003 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
2004 | return; | |
e4f9b4d5 | 2005 | |
cf7a04e8 DJ |
2006 | if (size == 0) |
2007 | return; | |
e4f9b4d5 | 2008 | |
a76d924d DJ |
2009 | new_request = VEC_safe_push (memory_write_request_s, |
2010 | args->requests, NULL); | |
2011 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
8d749320 | 2012 | section_data = XCNEW (struct load_progress_section_data); |
a76d924d | 2013 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; |
3e43a32a MS |
2014 | new_request->end = new_request->begin + size; /* FIXME Should size |
2015 | be in instead? */ | |
224c3ddb | 2016 | new_request->data = (gdb_byte *) xmalloc (size); |
a76d924d | 2017 | new_request->baton = section_data; |
cf7a04e8 | 2018 | |
a76d924d | 2019 | buffer = new_request->data; |
cf7a04e8 | 2020 | |
a76d924d DJ |
2021 | section_data->cumulative = args->progress_data; |
2022 | section_data->section_name = sect_name; | |
2023 | section_data->section_size = size; | |
2024 | section_data->lma = new_request->begin; | |
2025 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
2026 | |
2027 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
2028 | } |
2029 | ||
2030 | /* Clean up an entire memory request vector, including load | |
2031 | data and progress records. */ | |
cf7a04e8 | 2032 | |
a76d924d DJ |
2033 | static void |
2034 | clear_memory_write_data (void *arg) | |
2035 | { | |
19ba03f4 | 2036 | VEC(memory_write_request_s) **vec_p = (VEC(memory_write_request_s) **) arg; |
a76d924d DJ |
2037 | VEC(memory_write_request_s) *vec = *vec_p; |
2038 | int i; | |
2039 | struct memory_write_request *mr; | |
cf7a04e8 | 2040 | |
a76d924d DJ |
2041 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
2042 | { | |
2043 | xfree (mr->data); | |
2044 | xfree (mr->baton); | |
2045 | } | |
2046 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
2047 | } |
2048 | ||
dcb07cfa PA |
2049 | static void print_transfer_performance (struct ui_file *stream, |
2050 | unsigned long data_count, | |
2051 | unsigned long write_count, | |
2052 | std::chrono::steady_clock::duration d); | |
2053 | ||
c906108c | 2054 | void |
9cbe5fff | 2055 | generic_load (const char *args, int from_tty) |
c906108c | 2056 | { |
773a1edc | 2057 | struct cleanup *old_cleanups; |
e4f9b4d5 | 2058 | struct load_section_data cbdata; |
a76d924d | 2059 | struct load_progress_data total_progress; |
79a45e25 | 2060 | struct ui_out *uiout = current_uiout; |
a76d924d | 2061 | |
e4f9b4d5 MS |
2062 | CORE_ADDR entry; |
2063 | ||
a76d924d DJ |
2064 | memset (&cbdata, 0, sizeof (cbdata)); |
2065 | memset (&total_progress, 0, sizeof (total_progress)); | |
2066 | cbdata.progress_data = &total_progress; | |
2067 | ||
773a1edc | 2068 | old_cleanups = make_cleanup (clear_memory_write_data, &cbdata.requests); |
917317f4 | 2069 | |
d1a41061 PP |
2070 | if (args == NULL) |
2071 | error_no_arg (_("file to load")); | |
1986bccd | 2072 | |
773a1edc | 2073 | gdb_argv argv (args); |
1986bccd | 2074 | |
ee0c3293 | 2075 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
1986bccd AS |
2076 | |
2077 | if (argv[1] != NULL) | |
917317f4 | 2078 | { |
f698ca8e | 2079 | const char *endptr; |
ba5f2f8a | 2080 | |
f698ca8e | 2081 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2082 | |
2083 | /* If the last word was not a valid number then | |
2084 | treat it as a file name with spaces in. */ | |
2085 | if (argv[1] == endptr) | |
2086 | error (_("Invalid download offset:%s."), argv[1]); | |
2087 | ||
2088 | if (argv[2] != NULL) | |
2089 | error (_("Too many parameters.")); | |
917317f4 | 2090 | } |
c906108c | 2091 | |
c378eb4e | 2092 | /* Open the file for loading. */ |
ee0c3293 | 2093 | gdb_bfd_ref_ptr loadfile_bfd (gdb_bfd_open (filename.get (), gnutarget, -1)); |
c906108c | 2094 | if (loadfile_bfd == NULL) |
ee0c3293 | 2095 | perror_with_name (filename.get ()); |
917317f4 | 2096 | |
192b62ce | 2097 | if (!bfd_check_format (loadfile_bfd.get (), bfd_object)) |
c906108c | 2098 | { |
ee0c3293 | 2099 | error (_("\"%s\" is not an object file: %s"), filename.get (), |
c906108c SS |
2100 | bfd_errmsg (bfd_get_error ())); |
2101 | } | |
c5aa993b | 2102 | |
192b62ce | 2103 | bfd_map_over_sections (loadfile_bfd.get (), add_section_size_callback, |
a76d924d DJ |
2104 | (void *) &total_progress.total_size); |
2105 | ||
192b62ce | 2106 | bfd_map_over_sections (loadfile_bfd.get (), load_section_callback, &cbdata); |
c2d11a7d | 2107 | |
dcb07cfa PA |
2108 | using namespace std::chrono; |
2109 | ||
2110 | steady_clock::time_point start_time = steady_clock::now (); | |
c906108c | 2111 | |
a76d924d DJ |
2112 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2113 | load_progress) != 0) | |
2114 | error (_("Load failed")); | |
c906108c | 2115 | |
dcb07cfa | 2116 | steady_clock::time_point end_time = steady_clock::now (); |
ba5f2f8a | 2117 | |
192b62ce | 2118 | entry = bfd_get_start_address (loadfile_bfd.get ()); |
8c2b9656 | 2119 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
112e8700 SM |
2120 | uiout->text ("Start address "); |
2121 | uiout->field_fmt ("address", "%s", paddress (target_gdbarch (), entry)); | |
2122 | uiout->text (", load size "); | |
2123 | uiout->field_fmt ("load-size", "%lu", total_progress.data_count); | |
2124 | uiout->text ("\n"); | |
fb14de7b | 2125 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2126 | |
38963c97 DJ |
2127 | /* Reset breakpoints, now that we have changed the load image. For |
2128 | instance, breakpoints may have been set (or reset, by | |
2129 | post_create_inferior) while connected to the target but before we | |
2130 | loaded the program. In that case, the prologue analyzer could | |
2131 | have read instructions from the target to find the right | |
2132 | breakpoint locations. Loading has changed the contents of that | |
2133 | memory. */ | |
2134 | ||
2135 | breakpoint_re_set (); | |
2136 | ||
a76d924d DJ |
2137 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2138 | total_progress.write_count, | |
dcb07cfa | 2139 | end_time - start_time); |
c906108c SS |
2140 | |
2141 | do_cleanups (old_cleanups); | |
2142 | } | |
2143 | ||
dcb07cfa PA |
2144 | /* Report on STREAM the performance of a memory transfer operation, |
2145 | such as 'load'. DATA_COUNT is the number of bytes transferred. | |
2146 | WRITE_COUNT is the number of separate write operations, or 0, if | |
2147 | that information is not available. TIME is how long the operation | |
2148 | lasted. */ | |
c906108c | 2149 | |
dcb07cfa | 2150 | static void |
d9fcf2fb | 2151 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2152 | unsigned long data_count, |
2153 | unsigned long write_count, | |
dcb07cfa | 2154 | std::chrono::steady_clock::duration time) |
917317f4 | 2155 | { |
dcb07cfa | 2156 | using namespace std::chrono; |
79a45e25 | 2157 | struct ui_out *uiout = current_uiout; |
2b71414d | 2158 | |
dcb07cfa | 2159 | milliseconds ms = duration_cast<milliseconds> (time); |
2b71414d | 2160 | |
112e8700 | 2161 | uiout->text ("Transfer rate: "); |
dcb07cfa | 2162 | if (ms.count () > 0) |
8b93c638 | 2163 | { |
dcb07cfa | 2164 | unsigned long rate = ((ULONGEST) data_count * 1000) / ms.count (); |
9f43d28c | 2165 | |
112e8700 | 2166 | if (uiout->is_mi_like_p ()) |
9f43d28c | 2167 | { |
112e8700 SM |
2168 | uiout->field_fmt ("transfer-rate", "%lu", rate * 8); |
2169 | uiout->text (" bits/sec"); | |
9f43d28c DJ |
2170 | } |
2171 | else if (rate < 1024) | |
2172 | { | |
112e8700 SM |
2173 | uiout->field_fmt ("transfer-rate", "%lu", rate); |
2174 | uiout->text (" bytes/sec"); | |
9f43d28c DJ |
2175 | } |
2176 | else | |
2177 | { | |
112e8700 SM |
2178 | uiout->field_fmt ("transfer-rate", "%lu", rate / 1024); |
2179 | uiout->text (" KB/sec"); | |
9f43d28c | 2180 | } |
8b93c638 JM |
2181 | } |
2182 | else | |
2183 | { | |
112e8700 SM |
2184 | uiout->field_fmt ("transferred-bits", "%lu", (data_count * 8)); |
2185 | uiout->text (" bits in <1 sec"); | |
8b93c638 JM |
2186 | } |
2187 | if (write_count > 0) | |
2188 | { | |
112e8700 SM |
2189 | uiout->text (", "); |
2190 | uiout->field_fmt ("write-rate", "%lu", data_count / write_count); | |
2191 | uiout->text (" bytes/write"); | |
8b93c638 | 2192 | } |
112e8700 | 2193 | uiout->text (".\n"); |
c906108c SS |
2194 | } |
2195 | ||
2196 | /* This function allows the addition of incrementally linked object files. | |
2197 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2198 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2199 | special case syntax for the rombug target (Rombug is the boot | |
2200 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2201 | rombug case, the user doesn't need to supply a text address, | |
2202 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2203 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2204 | |
c906108c | 2205 | static void |
2cf311eb | 2206 | add_symbol_file_command (const char *args, int from_tty) |
c906108c | 2207 | { |
5af949e3 | 2208 | struct gdbarch *gdbarch = get_current_arch (); |
ee0c3293 | 2209 | gdb::unique_xmalloc_ptr<char> filename; |
c906108c | 2210 | char *arg; |
2acceee2 JM |
2211 | int argcnt = 0; |
2212 | int sec_num = 0; | |
76ad5e1e | 2213 | struct objfile *objf; |
b15cc25c PA |
2214 | objfile_flags flags = OBJF_USERLOADED | OBJF_SHARED; |
2215 | symfile_add_flags add_flags = 0; | |
2216 | ||
2217 | if (from_tty) | |
2218 | add_flags |= SYMFILE_VERBOSE; | |
db162d44 | 2219 | |
a39a16c4 | 2220 | struct sect_opt |
2acceee2 | 2221 | { |
a121b7c1 PA |
2222 | const char *name; |
2223 | const char *value; | |
a39a16c4 | 2224 | }; |
db162d44 | 2225 | |
a39a16c4 | 2226 | struct section_addr_info *section_addrs; |
40fc416f SDJ |
2227 | std::vector<sect_opt> sect_opts = { { ".text", NULL } }; |
2228 | bool stop_processing_options = false; | |
3017564a | 2229 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2230 | |
c906108c SS |
2231 | dont_repeat (); |
2232 | ||
2233 | if (args == NULL) | |
8a3fe4f8 | 2234 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2235 | |
40fc416f | 2236 | bool seen_addr = false; |
773a1edc | 2237 | gdb_argv argv (args); |
db162d44 | 2238 | |
5b96932b AS |
2239 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2240 | { | |
40fc416f | 2241 | if (stop_processing_options || *arg != '-') |
41dc8db8 | 2242 | { |
40fc416f | 2243 | if (filename == NULL) |
41dc8db8 | 2244 | { |
40fc416f SDJ |
2245 | /* First non-option argument is always the filename. */ |
2246 | filename.reset (tilde_expand (arg)); | |
41dc8db8 | 2247 | } |
40fc416f | 2248 | else if (!seen_addr) |
41dc8db8 | 2249 | { |
40fc416f SDJ |
2250 | /* The second non-option argument is always the text |
2251 | address at which to load the program. */ | |
2252 | sect_opts[0].value = arg; | |
2253 | seen_addr = true; | |
41dc8db8 MB |
2254 | } |
2255 | else | |
02ca603a | 2256 | error (_("Unrecognized argument \"%s\""), arg); |
41dc8db8 | 2257 | } |
40fc416f SDJ |
2258 | else if (strcmp (arg, "-readnow") == 0) |
2259 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
2260 | else if (strcmp (arg, "-readnever") == 0) |
2261 | flags |= OBJF_READNEVER; | |
40fc416f SDJ |
2262 | else if (strcmp (arg, "-s") == 0) |
2263 | { | |
2264 | if (argv[argcnt + 1] == NULL) | |
2265 | error (_("Missing section name after \"-s\"")); | |
2266 | else if (argv[argcnt + 2] == NULL) | |
2267 | error (_("Missing section address after \"-s\"")); | |
2268 | ||
2269 | sect_opt sect = { argv[argcnt + 1], argv[argcnt + 2] }; | |
2270 | ||
2271 | sect_opts.push_back (sect); | |
2272 | argcnt += 2; | |
2273 | } | |
2274 | else if (strcmp (arg, "--") == 0) | |
2275 | stop_processing_options = true; | |
2276 | else | |
2277 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c | 2278 | } |
c906108c | 2279 | |
40fc416f SDJ |
2280 | if (filename == NULL) |
2281 | error (_("You must provide a filename to be loaded.")); | |
2282 | ||
97cbe998 SDJ |
2283 | validate_readnow_readnever (flags); |
2284 | ||
927890d0 JB |
2285 | /* This command takes at least two arguments. The first one is a |
2286 | filename, and the second is the address where this file has been | |
2287 | loaded. Abort now if this address hasn't been provided by the | |
2288 | user. */ | |
40fc416f | 2289 | if (!seen_addr) |
ee0c3293 TT |
2290 | error (_("The address where %s has been loaded is missing"), |
2291 | filename.get ()); | |
927890d0 | 2292 | |
c378eb4e | 2293 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2294 | a sect_addr_info structure to be passed around to other |
2295 | functions. We have to split this up into separate print | |
bb599908 | 2296 | statements because hex_string returns a local static |
c378eb4e | 2297 | string. */ |
5417f6dc | 2298 | |
ee0c3293 TT |
2299 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), |
2300 | filename.get ()); | |
f978cb06 | 2301 | section_addrs = alloc_section_addr_info (sect_opts.size ()); |
a39a16c4 | 2302 | make_cleanup (xfree, section_addrs); |
f978cb06 | 2303 | for (sect_opt § : sect_opts) |
c906108c | 2304 | { |
db162d44 | 2305 | CORE_ADDR addr; |
f978cb06 TT |
2306 | const char *val = sect.value; |
2307 | const char *sec = sect.name; | |
5417f6dc | 2308 | |
ae822768 | 2309 | addr = parse_and_eval_address (val); |
db162d44 | 2310 | |
db162d44 | 2311 | /* Here we store the section offsets in the order they were |
c378eb4e | 2312 | entered on the command line. */ |
a121b7c1 | 2313 | section_addrs->other[sec_num].name = (char *) sec; |
a39a16c4 | 2314 | section_addrs->other[sec_num].addr = addr; |
5af949e3 UW |
2315 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2316 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2317 | sec_num++; |
2318 | ||
5417f6dc | 2319 | /* The object's sections are initialized when a |
db162d44 | 2320 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2321 | This happens in reread_symbols. |
db162d44 EZ |
2322 | At this point, we don't know what file type this is, |
2323 | so we can't determine what section names are valid. */ | |
2acceee2 | 2324 | } |
d76488d8 | 2325 | section_addrs->num_sections = sec_num; |
db162d44 | 2326 | |
2acceee2 | 2327 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2328 | error (_("Not confirmed.")); |
c906108c | 2329 | |
ee0c3293 | 2330 | objf = symbol_file_add (filename.get (), add_flags, section_addrs, flags); |
76ad5e1e NB |
2331 | |
2332 | add_target_sections_of_objfile (objf); | |
c906108c SS |
2333 | |
2334 | /* Getting new symbols may change our opinion about what is | |
2335 | frameless. */ | |
2336 | reinit_frame_cache (); | |
db162d44 | 2337 | do_cleanups (my_cleanups); |
c906108c SS |
2338 | } |
2339 | \f | |
70992597 | 2340 | |
63644780 NB |
2341 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2342 | ||
2343 | static void | |
2cf311eb | 2344 | remove_symbol_file_command (const char *args, int from_tty) |
63644780 | 2345 | { |
63644780 | 2346 | struct objfile *objf = NULL; |
63644780 | 2347 | struct program_space *pspace = current_program_space; |
63644780 NB |
2348 | |
2349 | dont_repeat (); | |
2350 | ||
2351 | if (args == NULL) | |
2352 | error (_("remove-symbol-file: no symbol file provided")); | |
2353 | ||
773a1edc | 2354 | gdb_argv argv (args); |
63644780 NB |
2355 | |
2356 | if (strcmp (argv[0], "-a") == 0) | |
2357 | { | |
2358 | /* Interpret the next argument as an address. */ | |
2359 | CORE_ADDR addr; | |
2360 | ||
2361 | if (argv[1] == NULL) | |
2362 | error (_("Missing address argument")); | |
2363 | ||
2364 | if (argv[2] != NULL) | |
2365 | error (_("Junk after %s"), argv[1]); | |
2366 | ||
2367 | addr = parse_and_eval_address (argv[1]); | |
2368 | ||
2369 | ALL_OBJFILES (objf) | |
2370 | { | |
d03de421 PA |
2371 | if ((objf->flags & OBJF_USERLOADED) != 0 |
2372 | && (objf->flags & OBJF_SHARED) != 0 | |
63644780 NB |
2373 | && objf->pspace == pspace && is_addr_in_objfile (addr, objf)) |
2374 | break; | |
2375 | } | |
2376 | } | |
2377 | else if (argv[0] != NULL) | |
2378 | { | |
2379 | /* Interpret the current argument as a file name. */ | |
63644780 NB |
2380 | |
2381 | if (argv[1] != NULL) | |
2382 | error (_("Junk after %s"), argv[0]); | |
2383 | ||
ee0c3293 | 2384 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
63644780 NB |
2385 | |
2386 | ALL_OBJFILES (objf) | |
2387 | { | |
d03de421 PA |
2388 | if ((objf->flags & OBJF_USERLOADED) != 0 |
2389 | && (objf->flags & OBJF_SHARED) != 0 | |
63644780 | 2390 | && objf->pspace == pspace |
ee0c3293 | 2391 | && filename_cmp (filename.get (), objfile_name (objf)) == 0) |
63644780 NB |
2392 | break; |
2393 | } | |
2394 | } | |
2395 | ||
2396 | if (objf == NULL) | |
2397 | error (_("No symbol file found")); | |
2398 | ||
2399 | if (from_tty | |
2400 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2401 | objfile_name (objf))) | |
2402 | error (_("Not confirmed.")); | |
2403 | ||
9e86da07 | 2404 | delete objf; |
63644780 | 2405 | clear_symtab_users (0); |
63644780 NB |
2406 | } |
2407 | ||
c906108c | 2408 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2409 | |
c906108c | 2410 | void |
fba45db2 | 2411 | reread_symbols (void) |
c906108c SS |
2412 | { |
2413 | struct objfile *objfile; | |
2414 | long new_modtime; | |
c906108c SS |
2415 | struct stat new_statbuf; |
2416 | int res; | |
4c404b8b | 2417 | std::vector<struct objfile *> new_objfiles; |
c906108c SS |
2418 | |
2419 | /* With the addition of shared libraries, this should be modified, | |
2420 | the load time should be saved in the partial symbol tables, since | |
2421 | different tables may come from different source files. FIXME. | |
2422 | This routine should then walk down each partial symbol table | |
c378eb4e | 2423 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2424 | |
c5aa993b JM |
2425 | for (objfile = object_files; objfile; objfile = objfile->next) |
2426 | { | |
9cce227f TG |
2427 | if (objfile->obfd == NULL) |
2428 | continue; | |
2429 | ||
2430 | /* Separate debug objfiles are handled in the main objfile. */ | |
2431 | if (objfile->separate_debug_objfile_backlink) | |
2432 | continue; | |
2433 | ||
02aeec7b JB |
2434 | /* If this object is from an archive (what you usually create with |
2435 | `ar', often called a `static library' on most systems, though | |
2436 | a `shared library' on AIX is also an archive), then you should | |
2437 | stat on the archive name, not member name. */ | |
9cce227f TG |
2438 | if (objfile->obfd->my_archive) |
2439 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2440 | else | |
4262abfb | 2441 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2442 | if (res != 0) |
2443 | { | |
c378eb4e | 2444 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
9cce227f | 2445 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
4262abfb | 2446 | objfile_name (objfile)); |
9cce227f TG |
2447 | continue; |
2448 | } | |
2449 | new_modtime = new_statbuf.st_mtime; | |
2450 | if (new_modtime != objfile->mtime) | |
2451 | { | |
2452 | struct cleanup *old_cleanups; | |
2453 | struct section_offsets *offsets; | |
2454 | int num_offsets; | |
24ba069a | 2455 | char *original_name; |
9cce227f TG |
2456 | |
2457 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
4262abfb | 2458 | objfile_name (objfile)); |
9cce227f TG |
2459 | |
2460 | /* There are various functions like symbol_file_add, | |
2461 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2462 | appear to do what we want. But they have various other | |
2463 | effects which we *don't* want. So we just do stuff | |
2464 | ourselves. We don't worry about mapped files (for one thing, | |
2465 | any mapped file will be out of date). */ | |
2466 | ||
2467 | /* If we get an error, blow away this objfile (not sure if | |
2468 | that is the correct response for things like shared | |
2469 | libraries). */ | |
ed2b3126 TT |
2470 | std::unique_ptr<struct objfile> objfile_holder (objfile); |
2471 | ||
9cce227f | 2472 | /* We need to do this whenever any symbols go away. */ |
ed2b3126 | 2473 | old_cleanups = make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
9cce227f | 2474 | |
0ba1096a KT |
2475 | if (exec_bfd != NULL |
2476 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2477 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2478 | { |
2479 | /* Reload EXEC_BFD without asking anything. */ | |
2480 | ||
2481 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2482 | } | |
2483 | ||
f6eeced0 JK |
2484 | /* Keep the calls order approx. the same as in free_objfile. */ |
2485 | ||
2486 | /* Free the separate debug objfiles. It will be | |
2487 | automatically recreated by sym_read. */ | |
2488 | free_objfile_separate_debug (objfile); | |
2489 | ||
2490 | /* Remove any references to this objfile in the global | |
2491 | value lists. */ | |
2492 | preserve_values (objfile); | |
2493 | ||
2494 | /* Nuke all the state that we will re-read. Much of the following | |
2495 | code which sets things to NULL really is necessary to tell | |
2496 | other parts of GDB that there is nothing currently there. | |
2497 | ||
2498 | Try to keep the freeing order compatible with free_objfile. */ | |
2499 | ||
2500 | if (objfile->sf != NULL) | |
2501 | { | |
2502 | (*objfile->sf->sym_finish) (objfile); | |
2503 | } | |
2504 | ||
2505 | clear_objfile_data (objfile); | |
2506 | ||
e1507e95 | 2507 | /* Clean up any state BFD has sitting around. */ |
a4453b7e | 2508 | { |
192b62ce | 2509 | gdb_bfd_ref_ptr obfd (objfile->obfd); |
d3846e71 | 2510 | char *obfd_filename; |
a4453b7e TT |
2511 | |
2512 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2513 | /* Open the new BFD before freeing the old one, so that | |
2514 | the filename remains live. */ | |
192b62ce TT |
2515 | gdb_bfd_ref_ptr temp (gdb_bfd_open (obfd_filename, gnutarget, -1)); |
2516 | objfile->obfd = temp.release (); | |
e1507e95 | 2517 | if (objfile->obfd == NULL) |
192b62ce | 2518 | error (_("Can't open %s to read symbols."), obfd_filename); |
a4453b7e TT |
2519 | } |
2520 | ||
24ba069a JK |
2521 | original_name = xstrdup (objfile->original_name); |
2522 | make_cleanup (xfree, original_name); | |
2523 | ||
9cce227f TG |
2524 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2525 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
4262abfb | 2526 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2527 | bfd_errmsg (bfd_get_error ())); |
2528 | ||
2529 | /* Save the offsets, we will nuke them with the rest of the | |
2530 | objfile_obstack. */ | |
2531 | num_offsets = objfile->num_sections; | |
2532 | offsets = ((struct section_offsets *) | |
2533 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2534 | memcpy (offsets, objfile->section_offsets, | |
2535 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2536 | ||
9cce227f TG |
2537 | /* FIXME: Do we have to free a whole linked list, or is this |
2538 | enough? */ | |
af5bf4ad SM |
2539 | objfile->global_psymbols.clear (); |
2540 | objfile->static_psymbols.clear (); | |
9cce227f | 2541 | |
c378eb4e | 2542 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2543 | psymbol_bcache_free (objfile->psymbol_cache); |
2544 | objfile->psymbol_cache = psymbol_bcache_init (); | |
41664b45 DG |
2545 | |
2546 | /* NB: after this call to obstack_free, objfiles_changed | |
2547 | will need to be called (see discussion below). */ | |
9cce227f TG |
2548 | obstack_free (&objfile->objfile_obstack, 0); |
2549 | objfile->sections = NULL; | |
43f3e411 | 2550 | objfile->compunit_symtabs = NULL; |
9cce227f TG |
2551 | objfile->psymtabs = NULL; |
2552 | objfile->psymtabs_addrmap = NULL; | |
2553 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2554 | objfile->template_symbols = NULL; |
9cce227f | 2555 | |
9cce227f TG |
2556 | /* obstack_init also initializes the obstack so it is |
2557 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2558 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2559 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2560 | |
846060df JB |
2561 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2562 | data on the objfile's obstack (if sharing data across | |
2563 | multiple users is not possible), so it's important to | |
2564 | do it *after* the obstack has been initialized. */ | |
2565 | set_objfile_per_bfd (objfile); | |
2566 | ||
224c3ddb SM |
2567 | objfile->original_name |
2568 | = (char *) obstack_copy0 (&objfile->objfile_obstack, original_name, | |
2569 | strlen (original_name)); | |
24ba069a | 2570 | |
779bd270 DE |
2571 | /* Reset the sym_fns pointer. The ELF reader can change it |
2572 | based on whether .gdb_index is present, and we need it to | |
2573 | start over. PR symtab/15885 */ | |
8fb8eb5c | 2574 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
779bd270 | 2575 | |
d82ea6a8 | 2576 | build_objfile_section_table (objfile); |
9cce227f TG |
2577 | terminate_minimal_symbol_table (objfile); |
2578 | ||
2579 | /* We use the same section offsets as from last time. I'm not | |
2580 | sure whether that is always correct for shared libraries. */ | |
2581 | objfile->section_offsets = (struct section_offsets *) | |
2582 | obstack_alloc (&objfile->objfile_obstack, | |
2583 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2584 | memcpy (objfile->section_offsets, offsets, | |
2585 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2586 | objfile->num_sections = num_offsets; | |
2587 | ||
2588 | /* What the hell is sym_new_init for, anyway? The concept of | |
2589 | distinguishing between the main file and additional files | |
2590 | in this way seems rather dubious. */ | |
2591 | if (objfile == symfile_objfile) | |
c906108c | 2592 | { |
9cce227f | 2593 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2594 | } |
9cce227f TG |
2595 | |
2596 | (*objfile->sf->sym_init) (objfile); | |
2597 | clear_complaints (&symfile_complaints, 1, 1); | |
608e2dbb TT |
2598 | |
2599 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
41664b45 DG |
2600 | |
2601 | /* We are about to read new symbols and potentially also | |
2602 | DWARF information. Some targets may want to pass addresses | |
2603 | read from DWARF DIE's through an adjustment function before | |
2604 | saving them, like MIPS, which may call into | |
2605 | "find_pc_section". When called, that function will make | |
2606 | use of per-objfile program space data. | |
2607 | ||
2608 | Since we discarded our section information above, we have | |
2609 | dangling pointers in the per-objfile program space data | |
2610 | structure. Force GDB to update the section mapping | |
2611 | information by letting it know the objfile has changed, | |
2612 | making the dangling pointers point to correct data | |
2613 | again. */ | |
2614 | ||
2615 | objfiles_changed (); | |
2616 | ||
608e2dbb | 2617 | read_symbols (objfile, 0); |
b11896a5 | 2618 | |
9cce227f | 2619 | if (!objfile_has_symbols (objfile)) |
c906108c | 2620 | { |
9cce227f TG |
2621 | wrap_here (""); |
2622 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2623 | wrap_here (""); | |
c5aa993b | 2624 | } |
9cce227f TG |
2625 | |
2626 | /* We're done reading the symbol file; finish off complaints. */ | |
2627 | clear_complaints (&symfile_complaints, 0, 1); | |
2628 | ||
2629 | /* Getting new symbols may change our opinion about what is | |
2630 | frameless. */ | |
2631 | ||
2632 | reinit_frame_cache (); | |
2633 | ||
2634 | /* Discard cleanups as symbol reading was successful. */ | |
ed2b3126 | 2635 | objfile_holder.release (); |
9cce227f TG |
2636 | discard_cleanups (old_cleanups); |
2637 | ||
2638 | /* If the mtime has changed between the time we set new_modtime | |
2639 | and now, we *want* this to be out of date, so don't call stat | |
2640 | again now. */ | |
2641 | objfile->mtime = new_modtime; | |
9cce227f | 2642 | init_entry_point_info (objfile); |
4ac39b97 | 2643 | |
4c404b8b | 2644 | new_objfiles.push_back (objfile); |
c906108c SS |
2645 | } |
2646 | } | |
c906108c | 2647 | |
4c404b8b | 2648 | if (!new_objfiles.empty ()) |
ea53e89f | 2649 | { |
c1e56572 | 2650 | clear_symtab_users (0); |
4ac39b97 JK |
2651 | |
2652 | /* clear_objfile_data for each objfile was called before freeing it and | |
2653 | observer_notify_new_objfile (NULL) has been called by | |
2654 | clear_symtab_users above. Notify the new files now. */ | |
4c404b8b TT |
2655 | for (auto iter : new_objfiles) |
2656 | observer_notify_new_objfile (iter); | |
4ac39b97 | 2657 | |
ea53e89f JB |
2658 | /* At least one objfile has changed, so we can consider that |
2659 | the executable we're debugging has changed too. */ | |
781b42b0 | 2660 | observer_notify_executable_changed (); |
ea53e89f | 2661 | } |
c906108c | 2662 | } |
c906108c SS |
2663 | \f |
2664 | ||
593e3209 | 2665 | struct filename_language |
c5aa993b | 2666 | { |
593e3209 SM |
2667 | filename_language (const std::string &ext_, enum language lang_) |
2668 | : ext (ext_), lang (lang_) | |
2669 | {} | |
3fcf0b0d | 2670 | |
593e3209 SM |
2671 | std::string ext; |
2672 | enum language lang; | |
2673 | }; | |
c906108c | 2674 | |
593e3209 | 2675 | static std::vector<filename_language> filename_language_table; |
c906108c | 2676 | |
56618e20 TT |
2677 | /* See symfile.h. */ |
2678 | ||
2679 | void | |
2680 | add_filename_language (const char *ext, enum language lang) | |
c906108c | 2681 | { |
593e3209 | 2682 | filename_language_table.emplace_back (ext, lang); |
c906108c SS |
2683 | } |
2684 | ||
2685 | static char *ext_args; | |
920d2a44 AC |
2686 | static void |
2687 | show_ext_args (struct ui_file *file, int from_tty, | |
2688 | struct cmd_list_element *c, const char *value) | |
2689 | { | |
3e43a32a MS |
2690 | fprintf_filtered (file, |
2691 | _("Mapping between filename extension " | |
2692 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2693 | value); |
2694 | } | |
c906108c SS |
2695 | |
2696 | static void | |
eb4c3f4a TT |
2697 | set_ext_lang_command (const char *args, |
2698 | int from_tty, struct cmd_list_element *e) | |
c906108c | 2699 | { |
c906108c SS |
2700 | char *cp = ext_args; |
2701 | enum language lang; | |
2702 | ||
c378eb4e | 2703 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2704 | if (*cp != '.') |
8a3fe4f8 | 2705 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2706 | |
2707 | /* Find end of first arg. */ | |
c5aa993b | 2708 | while (*cp && !isspace (*cp)) |
c906108c SS |
2709 | cp++; |
2710 | ||
2711 | if (*cp == '\0') | |
3e43a32a MS |
2712 | error (_("'%s': two arguments required -- " |
2713 | "filename extension and language"), | |
c906108c SS |
2714 | ext_args); |
2715 | ||
c378eb4e | 2716 | /* Null-terminate first arg. */ |
c5aa993b | 2717 | *cp++ = '\0'; |
c906108c SS |
2718 | |
2719 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2720 | cp = skip_spaces (cp); |
c906108c SS |
2721 | |
2722 | if (*cp == '\0') | |
3e43a32a MS |
2723 | error (_("'%s': two arguments required -- " |
2724 | "filename extension and language"), | |
c906108c SS |
2725 | ext_args); |
2726 | ||
2727 | /* Lookup the language from among those we know. */ | |
2728 | lang = language_enum (cp); | |
2729 | ||
593e3209 | 2730 | auto it = filename_language_table.begin (); |
c906108c | 2731 | /* Now lookup the filename extension: do we already know it? */ |
593e3209 | 2732 | for (; it != filename_language_table.end (); it++) |
3fcf0b0d | 2733 | { |
593e3209 | 2734 | if (it->ext == ext_args) |
3fcf0b0d TT |
2735 | break; |
2736 | } | |
c906108c | 2737 | |
593e3209 | 2738 | if (it == filename_language_table.end ()) |
c906108c | 2739 | { |
c378eb4e | 2740 | /* New file extension. */ |
c906108c SS |
2741 | add_filename_language (ext_args, lang); |
2742 | } | |
2743 | else | |
2744 | { | |
c378eb4e | 2745 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2746 | |
2747 | /* if (from_tty) */ | |
2748 | /* query ("Really make files of type %s '%s'?", */ | |
2749 | /* ext_args, language_str (lang)); */ | |
2750 | ||
593e3209 | 2751 | it->lang = lang; |
c906108c SS |
2752 | } |
2753 | } | |
2754 | ||
2755 | static void | |
1d12d88f | 2756 | info_ext_lang_command (const char *args, int from_tty) |
c906108c | 2757 | { |
a3f17187 | 2758 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c | 2759 | printf_filtered ("\n\n"); |
593e3209 SM |
2760 | for (const filename_language &entry : filename_language_table) |
2761 | printf_filtered ("\t%s\t- %s\n", entry.ext.c_str (), | |
2762 | language_str (entry.lang)); | |
c906108c SS |
2763 | } |
2764 | ||
c906108c | 2765 | enum language |
dd786858 | 2766 | deduce_language_from_filename (const char *filename) |
c906108c | 2767 | { |
e6a959d6 | 2768 | const char *cp; |
c906108c SS |
2769 | |
2770 | if (filename != NULL) | |
2771 | if ((cp = strrchr (filename, '.')) != NULL) | |
3fcf0b0d | 2772 | { |
593e3209 SM |
2773 | for (const filename_language &entry : filename_language_table) |
2774 | if (entry.ext == cp) | |
2775 | return entry.lang; | |
3fcf0b0d | 2776 | } |
c906108c SS |
2777 | |
2778 | return language_unknown; | |
2779 | } | |
2780 | \f | |
43f3e411 DE |
2781 | /* Allocate and initialize a new symbol table. |
2782 | CUST is from the result of allocate_compunit_symtab. */ | |
c906108c SS |
2783 | |
2784 | struct symtab * | |
43f3e411 | 2785 | allocate_symtab (struct compunit_symtab *cust, const char *filename) |
c906108c | 2786 | { |
43f3e411 DE |
2787 | struct objfile *objfile = cust->objfile; |
2788 | struct symtab *symtab | |
2789 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symtab); | |
c906108c | 2790 | |
19ba03f4 SM |
2791 | symtab->filename |
2792 | = (const char *) bcache (filename, strlen (filename) + 1, | |
21ea9eec | 2793 | objfile->per_bfd->filename_cache); |
c5aa993b JM |
2794 | symtab->fullname = NULL; |
2795 | symtab->language = deduce_language_from_filename (filename); | |
c906108c | 2796 | |
db0fec5c DE |
2797 | /* This can be very verbose with lots of headers. |
2798 | Only print at higher debug levels. */ | |
2799 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2800 | { |
2801 | /* Be a bit clever with debugging messages, and don't print objfile | |
2802 | every time, only when it changes. */ | |
2803 | static char *last_objfile_name = NULL; | |
2804 | ||
2805 | if (last_objfile_name == NULL | |
4262abfb | 2806 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
45cfd468 DE |
2807 | { |
2808 | xfree (last_objfile_name); | |
4262abfb | 2809 | last_objfile_name = xstrdup (objfile_name (objfile)); |
45cfd468 DE |
2810 | fprintf_unfiltered (gdb_stdlog, |
2811 | "Creating one or more symtabs for objfile %s ...\n", | |
2812 | last_objfile_name); | |
2813 | } | |
2814 | fprintf_unfiltered (gdb_stdlog, | |
b3dbbd6f PM |
2815 | "Created symtab %s for module %s.\n", |
2816 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2817 | } |
2818 | ||
43f3e411 DE |
2819 | /* Add it to CUST's list of symtabs. */ |
2820 | if (cust->filetabs == NULL) | |
2821 | { | |
2822 | cust->filetabs = symtab; | |
2823 | cust->last_filetab = symtab; | |
2824 | } | |
2825 | else | |
2826 | { | |
2827 | cust->last_filetab->next = symtab; | |
2828 | cust->last_filetab = symtab; | |
2829 | } | |
2830 | ||
2831 | /* Backlink to the containing compunit symtab. */ | |
2832 | symtab->compunit_symtab = cust; | |
2833 | ||
2834 | return symtab; | |
2835 | } | |
2836 | ||
2837 | /* Allocate and initialize a new compunit. | |
2838 | NAME is the name of the main source file, if there is one, or some | |
2839 | descriptive text if there are no source files. */ | |
2840 | ||
2841 | struct compunit_symtab * | |
2842 | allocate_compunit_symtab (struct objfile *objfile, const char *name) | |
2843 | { | |
2844 | struct compunit_symtab *cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2845 | struct compunit_symtab); | |
2846 | const char *saved_name; | |
2847 | ||
2848 | cu->objfile = objfile; | |
2849 | ||
2850 | /* The name we record here is only for display/debugging purposes. | |
2851 | Just save the basename to avoid path issues (too long for display, | |
2852 | relative vs absolute, etc.). */ | |
2853 | saved_name = lbasename (name); | |
224c3ddb SM |
2854 | cu->name |
2855 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, saved_name, | |
2856 | strlen (saved_name)); | |
43f3e411 DE |
2857 | |
2858 | COMPUNIT_DEBUGFORMAT (cu) = "unknown"; | |
2859 | ||
2860 | if (symtab_create_debug) | |
2861 | { | |
2862 | fprintf_unfiltered (gdb_stdlog, | |
2863 | "Created compunit symtab %s for %s.\n", | |
2864 | host_address_to_string (cu), | |
2865 | cu->name); | |
2866 | } | |
2867 | ||
2868 | return cu; | |
2869 | } | |
2870 | ||
2871 | /* Hook CU to the objfile it comes from. */ | |
2872 | ||
2873 | void | |
2874 | add_compunit_symtab_to_objfile (struct compunit_symtab *cu) | |
2875 | { | |
2876 | cu->next = cu->objfile->compunit_symtabs; | |
2877 | cu->objfile->compunit_symtabs = cu; | |
c906108c | 2878 | } |
c906108c | 2879 | \f |
c5aa993b | 2880 | |
b15cc25c PA |
2881 | /* Reset all data structures in gdb which may contain references to |
2882 | symbol table data. */ | |
c906108c SS |
2883 | |
2884 | void | |
b15cc25c | 2885 | clear_symtab_users (symfile_add_flags add_flags) |
c906108c SS |
2886 | { |
2887 | /* Someday, we should do better than this, by only blowing away | |
2888 | the things that really need to be blown. */ | |
c0501be5 DJ |
2889 | |
2890 | /* Clear the "current" symtab first, because it is no longer valid. | |
2891 | breakpoint_re_set may try to access the current symtab. */ | |
2892 | clear_current_source_symtab_and_line (); | |
2893 | ||
c906108c | 2894 | clear_displays (); |
1bfeeb0f | 2895 | clear_last_displayed_sal (); |
c906108c | 2896 | clear_pc_function_cache (); |
06d3b283 | 2897 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2898 | |
2899 | /* Clear globals which might have pointed into a removed objfile. | |
2900 | FIXME: It's not clear which of these are supposed to persist | |
2901 | between expressions and which ought to be reset each time. */ | |
2902 | expression_context_block = NULL; | |
aee1fcdf | 2903 | innermost_block.reset (); |
8756216b DP |
2904 | |
2905 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2906 | varobj_invalidate (); | |
2907 | ||
e700d1b2 JB |
2908 | /* Now that the various caches have been cleared, we can re_set |
2909 | our breakpoints without risking it using stale data. */ | |
2910 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) | |
2911 | breakpoint_re_set (); | |
c906108c SS |
2912 | } |
2913 | ||
74b7792f AC |
2914 | static void |
2915 | clear_symtab_users_cleanup (void *ignore) | |
2916 | { | |
c1e56572 | 2917 | clear_symtab_users (0); |
74b7792f | 2918 | } |
c906108c | 2919 | \f |
c906108c SS |
2920 | /* OVERLAYS: |
2921 | The following code implements an abstraction for debugging overlay sections. | |
2922 | ||
2923 | The target model is as follows: | |
2924 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2925 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2926 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2927 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2928 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2929 | sections should be considered to be mapped from the VMA to the LMA. |
2930 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2931 | For instance, if a section has been mapped then its contents |
c5aa993b | 2932 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2933 | |
2934 | Two levels of debugger support for overlays are available. One is | |
2935 | "manual", in which the debugger relies on the user to tell it which | |
2936 | overlays are currently mapped. This level of support is | |
2937 | implemented entirely in the core debugger, and the information about | |
2938 | whether a section is mapped is kept in the objfile->obj_section table. | |
2939 | ||
2940 | The second level of support is "automatic", and is only available if | |
2941 | the target-specific code provides functionality to read the target's | |
2942 | overlay mapping table, and translate its contents for the debugger | |
2943 | (by updating the mapped state information in the obj_section tables). | |
2944 | ||
2945 | The interface is as follows: | |
c5aa993b JM |
2946 | User commands: |
2947 | overlay map <name> -- tell gdb to consider this section mapped | |
2948 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2949 | overlay list -- list the sections that GDB thinks are mapped | |
2950 | overlay read-target -- get the target's state of what's mapped | |
2951 | overlay off/manual/auto -- set overlay debugging state | |
2952 | Functional interface: | |
2953 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2954 | section, return that section. | |
5417f6dc | 2955 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2956 | the pc, either in its VMA or its LMA |
714835d5 | 2957 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2958 | section_is_overlay(sect): true if section's VMA != LMA |
2959 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2960 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2961 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2962 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2963 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2964 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2965 | either in VMA or LMA depending on whether | |
c378eb4e | 2966 | the symbol's section is currently mapped. */ |
c906108c SS |
2967 | |
2968 | /* Overlay debugging state: */ | |
2969 | ||
d874f1e2 | 2970 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2971 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2972 | |
c906108c | 2973 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2974 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2975 | SECTION is loaded at an address different from where it will "run". */ |
2976 | ||
2977 | int | |
714835d5 | 2978 | section_is_overlay (struct obj_section *section) |
c906108c | 2979 | { |
714835d5 UW |
2980 | if (overlay_debugging && section) |
2981 | { | |
714835d5 | 2982 | asection *bfd_section = section->the_bfd_section; |
f888f159 | 2983 | |
714835d5 UW |
2984 | if (bfd_section_lma (abfd, bfd_section) != 0 |
2985 | && bfd_section_lma (abfd, bfd_section) | |
2986 | != bfd_section_vma (abfd, bfd_section)) | |
2987 | return 1; | |
2988 | } | |
c906108c SS |
2989 | |
2990 | return 0; | |
2991 | } | |
2992 | ||
2993 | /* Function: overlay_invalidate_all (void) | |
2994 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2995 | ||
2996 | static void | |
fba45db2 | 2997 | overlay_invalidate_all (void) |
c906108c | 2998 | { |
c5aa993b | 2999 | struct objfile *objfile; |
c906108c SS |
3000 | struct obj_section *sect; |
3001 | ||
3002 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
3003 | if (section_is_overlay (sect)) |
3004 | sect->ovly_mapped = -1; | |
c906108c SS |
3005 | } |
3006 | ||
714835d5 | 3007 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 3008 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3009 | |
3010 | Access to the ovly_mapped flag is restricted to this function, so | |
3011 | that we can do automatic update. If the global flag | |
3012 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3013 | overlay_invalidate_all. If the mapped state of the particular | |
3014 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3015 | ||
714835d5 UW |
3016 | int |
3017 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3018 | { |
9216df95 UW |
3019 | struct gdbarch *gdbarch; |
3020 | ||
714835d5 | 3021 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3022 | return 0; |
3023 | ||
c5aa993b | 3024 | switch (overlay_debugging) |
c906108c SS |
3025 | { |
3026 | default: | |
d874f1e2 | 3027 | case ovly_off: |
c5aa993b | 3028 | return 0; /* overlay debugging off */ |
d874f1e2 | 3029 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3030 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3031 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3032 | gdbarch = get_objfile_arch (osect->objfile); |
3033 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3034 | { |
3035 | if (overlay_cache_invalid) | |
3036 | { | |
3037 | overlay_invalidate_all (); | |
3038 | overlay_cache_invalid = 0; | |
3039 | } | |
3040 | if (osect->ovly_mapped == -1) | |
9216df95 | 3041 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
3042 | } |
3043 | /* fall thru to manual case */ | |
d874f1e2 | 3044 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3045 | return osect->ovly_mapped == 1; |
3046 | } | |
3047 | } | |
3048 | ||
c906108c SS |
3049 | /* Function: pc_in_unmapped_range |
3050 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3051 | ||
3052 | CORE_ADDR | |
714835d5 | 3053 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3054 | { |
714835d5 UW |
3055 | if (section_is_overlay (section)) |
3056 | { | |
3057 | bfd *abfd = section->objfile->obfd; | |
3058 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3059 | |
714835d5 UW |
3060 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3061 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3062 | CORE_ADDR offset = obj_section_offset (section); | |
3063 | ||
3064 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3065 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3066 | return 1; | |
3067 | } | |
c906108c | 3068 | |
c906108c SS |
3069 | return 0; |
3070 | } | |
3071 | ||
3072 | /* Function: pc_in_mapped_range | |
3073 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3074 | ||
3075 | CORE_ADDR | |
714835d5 | 3076 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3077 | { |
714835d5 UW |
3078 | if (section_is_overlay (section)) |
3079 | { | |
3080 | if (obj_section_addr (section) <= pc | |
3081 | && pc < obj_section_endaddr (section)) | |
3082 | return 1; | |
3083 | } | |
c906108c | 3084 | |
c906108c SS |
3085 | return 0; |
3086 | } | |
3087 | ||
9ec8e6a0 JB |
3088 | /* Return true if the mapped ranges of sections A and B overlap, false |
3089 | otherwise. */ | |
3b7bacac | 3090 | |
b9362cc7 | 3091 | static int |
714835d5 | 3092 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3093 | { |
714835d5 UW |
3094 | CORE_ADDR a_start = obj_section_addr (a); |
3095 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3096 | CORE_ADDR b_start = obj_section_addr (b); | |
3097 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3098 | |
3099 | return (a_start < b_end && b_start < a_end); | |
3100 | } | |
3101 | ||
c906108c SS |
3102 | /* Function: overlay_unmapped_address (PC, SECTION) |
3103 | Returns the address corresponding to PC in the unmapped (load) range. | |
3104 | May be the same as PC. */ | |
3105 | ||
3106 | CORE_ADDR | |
714835d5 | 3107 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3108 | { |
714835d5 UW |
3109 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3110 | { | |
714835d5 | 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 | { | |
714835d5 | 3129 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3130 | |
714835d5 UW |
3131 | return pc + bfd_section_vma (abfd, bfd_section) |
3132 | - bfd_section_lma (abfd, bfd_section); | |
3133 | } | |
c906108c SS |
3134 | |
3135 | return pc; | |
3136 | } | |
3137 | ||
5417f6dc | 3138 | /* Function: symbol_overlayed_address |
c906108c SS |
3139 | Return one of two addresses (relative to the VMA or to the LMA), |
3140 | depending on whether the section is mapped or not. */ | |
3141 | ||
c5aa993b | 3142 | CORE_ADDR |
714835d5 | 3143 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3144 | { |
3145 | if (overlay_debugging) | |
3146 | { | |
c378eb4e | 3147 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3148 | if (section == 0) |
3149 | return address; | |
c378eb4e MS |
3150 | /* If the symbol's section is not an overlay, just return its |
3151 | address. */ | |
c906108c SS |
3152 | if (!section_is_overlay (section)) |
3153 | return address; | |
c378eb4e | 3154 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3155 | if (section_is_mapped (section)) |
3156 | return address; | |
3157 | /* | |
3158 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3159 | * then return its LOADED address rather than its vma address!! | |
3160 | */ | |
3161 | return overlay_unmapped_address (address, section); | |
3162 | } | |
3163 | return address; | |
3164 | } | |
3165 | ||
5417f6dc | 3166 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3167 | Return the best-match overlay section for PC: |
3168 | If PC matches a mapped overlay section's VMA, return that section. | |
3169 | Else if PC matches an unmapped section's VMA, return that section. | |
3170 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3171 | ||
714835d5 | 3172 | struct obj_section * |
fba45db2 | 3173 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3174 | { |
c5aa993b | 3175 | struct objfile *objfile; |
c906108c SS |
3176 | struct obj_section *osect, *best_match = NULL; |
3177 | ||
3178 | if (overlay_debugging) | |
b631e59b KT |
3179 | { |
3180 | ALL_OBJSECTIONS (objfile, osect) | |
3181 | if (section_is_overlay (osect)) | |
c5aa993b | 3182 | { |
b631e59b KT |
3183 | if (pc_in_mapped_range (pc, osect)) |
3184 | { | |
3185 | if (section_is_mapped (osect)) | |
3186 | return osect; | |
3187 | else | |
3188 | best_match = osect; | |
3189 | } | |
3190 | else if (pc_in_unmapped_range (pc, osect)) | |
c5aa993b JM |
3191 | best_match = osect; |
3192 | } | |
b631e59b | 3193 | } |
714835d5 | 3194 | return best_match; |
c906108c SS |
3195 | } |
3196 | ||
3197 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3198 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3199 | currently marked as MAPPED, return that section. Else return NULL. */ |
3200 | ||
714835d5 | 3201 | struct obj_section * |
fba45db2 | 3202 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3203 | { |
c5aa993b | 3204 | struct objfile *objfile; |
c906108c SS |
3205 | struct obj_section *osect; |
3206 | ||
3207 | if (overlay_debugging) | |
b631e59b KT |
3208 | { |
3209 | ALL_OBJSECTIONS (objfile, osect) | |
3210 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) | |
3211 | return osect; | |
3212 | } | |
c906108c SS |
3213 | |
3214 | return NULL; | |
3215 | } | |
3216 | ||
3217 | /* Function: list_overlays_command | |
c378eb4e | 3218 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3219 | |
5d3055ad | 3220 | static void |
2cf311eb | 3221 | list_overlays_command (const char *args, int from_tty) |
c906108c | 3222 | { |
c5aa993b JM |
3223 | int nmapped = 0; |
3224 | struct objfile *objfile; | |
c906108c SS |
3225 | struct obj_section *osect; |
3226 | ||
3227 | if (overlay_debugging) | |
b631e59b KT |
3228 | { |
3229 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3230 | if (section_is_mapped (osect)) |
b631e59b KT |
3231 | { |
3232 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3233 | const char *name; | |
3234 | bfd_vma lma, vma; | |
3235 | int size; | |
3236 | ||
3237 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3238 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
3239 | size = bfd_get_section_size (osect->the_bfd_section); | |
3240 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
3241 | ||
3242 | printf_filtered ("Section %s, loaded at ", name); | |
3243 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); | |
3244 | puts_filtered (" - "); | |
3245 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); | |
3246 | printf_filtered (", mapped at "); | |
3247 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); | |
3248 | puts_filtered (" - "); | |
3249 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); | |
3250 | puts_filtered ("\n"); | |
3251 | ||
3252 | nmapped++; | |
3253 | } | |
3254 | } | |
c906108c | 3255 | if (nmapped == 0) |
a3f17187 | 3256 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3257 | } |
3258 | ||
3259 | /* Function: map_overlay_command | |
3260 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3261 | ||
5d3055ad | 3262 | static void |
2cf311eb | 3263 | map_overlay_command (const char *args, int from_tty) |
c906108c | 3264 | { |
c5aa993b JM |
3265 | struct objfile *objfile, *objfile2; |
3266 | struct obj_section *sec, *sec2; | |
c906108c SS |
3267 | |
3268 | if (!overlay_debugging) | |
3e43a32a MS |
3269 | error (_("Overlay debugging not enabled. Use " |
3270 | "either the 'overlay auto' or\n" | |
3271 | "the 'overlay manual' command.")); | |
c906108c SS |
3272 | |
3273 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3274 | error (_("Argument required: name of an overlay section")); |
c906108c | 3275 | |
c378eb4e | 3276 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3277 | ALL_OBJSECTIONS (objfile, sec) |
3278 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3279 | { |
c378eb4e | 3280 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3281 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3282 | continue; /* not an overlay section */ |
3283 | ||
c378eb4e | 3284 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3285 | sec->ovly_mapped = 1; |
3286 | ||
3287 | /* Next, make a pass and unmap any sections that are | |
3288 | overlapped by this new section: */ | |
3289 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3290 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3291 | { |
3292 | if (info_verbose) | |
a3f17187 | 3293 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3294 | bfd_section_name (objfile->obfd, |
3295 | sec2->the_bfd_section)); | |
c378eb4e | 3296 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3297 | } |
3298 | return; | |
3299 | } | |
8a3fe4f8 | 3300 | error (_("No overlay section called %s"), args); |
c906108c SS |
3301 | } |
3302 | ||
3303 | /* Function: unmap_overlay_command | |
5417f6dc | 3304 | Mark the overlay section as unmapped |
c906108c SS |
3305 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3306 | ||
5d3055ad | 3307 | static void |
2cf311eb | 3308 | unmap_overlay_command (const char *args, int from_tty) |
c906108c | 3309 | { |
c5aa993b | 3310 | struct objfile *objfile; |
7a270e0c | 3311 | struct obj_section *sec = NULL; |
c906108c SS |
3312 | |
3313 | if (!overlay_debugging) | |
3e43a32a MS |
3314 | error (_("Overlay debugging not enabled. " |
3315 | "Use either the 'overlay auto' or\n" | |
3316 | "the 'overlay manual' command.")); | |
c906108c SS |
3317 | |
3318 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3319 | error (_("Argument required: name of an overlay section")); |
c906108c | 3320 | |
c378eb4e | 3321 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3322 | ALL_OBJSECTIONS (objfile, sec) |
3323 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3324 | { |
3325 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3326 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3327 | sec->ovly_mapped = 0; |
3328 | return; | |
3329 | } | |
8a3fe4f8 | 3330 | error (_("No overlay section called %s"), args); |
c906108c SS |
3331 | } |
3332 | ||
3333 | /* Function: overlay_auto_command | |
3334 | A utility command to turn on overlay debugging. | |
c378eb4e | 3335 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3336 | |
3337 | static void | |
2cf311eb | 3338 | overlay_auto_command (const char *args, int from_tty) |
c906108c | 3339 | { |
d874f1e2 | 3340 | overlay_debugging = ovly_auto; |
1900040c | 3341 | enable_overlay_breakpoints (); |
c906108c | 3342 | if (info_verbose) |
a3f17187 | 3343 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3344 | } |
3345 | ||
3346 | /* Function: overlay_manual_command | |
3347 | A utility command to turn on overlay debugging. | |
c378eb4e | 3348 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3349 | |
3350 | static void | |
2cf311eb | 3351 | overlay_manual_command (const char *args, int from_tty) |
c906108c | 3352 | { |
d874f1e2 | 3353 | overlay_debugging = ovly_on; |
1900040c | 3354 | disable_overlay_breakpoints (); |
c906108c | 3355 | if (info_verbose) |
a3f17187 | 3356 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3357 | } |
3358 | ||
3359 | /* Function: overlay_off_command | |
3360 | A utility command to turn on overlay debugging. | |
c378eb4e | 3361 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3362 | |
3363 | static void | |
2cf311eb | 3364 | overlay_off_command (const char *args, int from_tty) |
c906108c | 3365 | { |
d874f1e2 | 3366 | overlay_debugging = ovly_off; |
1900040c | 3367 | disable_overlay_breakpoints (); |
c906108c | 3368 | if (info_verbose) |
a3f17187 | 3369 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3370 | } |
3371 | ||
3372 | static void | |
2cf311eb | 3373 | overlay_load_command (const char *args, int from_tty) |
c906108c | 3374 | { |
e17c207e UW |
3375 | struct gdbarch *gdbarch = get_current_arch (); |
3376 | ||
3377 | if (gdbarch_overlay_update_p (gdbarch)) | |
3378 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3379 | else |
8a3fe4f8 | 3380 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3381 | } |
3382 | ||
3383 | /* Function: overlay_command | |
c378eb4e | 3384 | A place-holder for a mis-typed command. */ |
c906108c | 3385 | |
c378eb4e | 3386 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3387 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3388 | |
3389 | static void | |
981a3fb3 | 3390 | overlay_command (const char *args, int from_tty) |
c906108c | 3391 | { |
c5aa993b | 3392 | printf_unfiltered |
c906108c | 3393 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
635c7e8a | 3394 | help_list (overlaylist, "overlay ", all_commands, gdb_stdout); |
c906108c SS |
3395 | } |
3396 | ||
c906108c SS |
3397 | /* Target Overlays for the "Simplest" overlay manager: |
3398 | ||
5417f6dc RM |
3399 | This is GDB's default target overlay layer. It works with the |
3400 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3401 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3402 | so targets that use a different runtime overlay manager can |
c906108c SS |
3403 | substitute their own overlay_update function and take over the |
3404 | function pointer. | |
3405 | ||
3406 | The overlay_update function pokes around in the target's data structures | |
3407 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3408 | this information. | |
3409 | ||
3410 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3411 | unsigned _novlys; /# number of overlay sections #/ |
3412 | unsigned _ovly_table[_novlys][4] = { | |
438e1e42 | 3413 | {VMA, OSIZE, LMA, MAPPED}, /# one entry per overlay section #/ |
c5aa993b JM |
3414 | {..., ..., ..., ...}, |
3415 | } | |
3416 | unsigned _novly_regions; /# number of overlay regions #/ | |
3417 | unsigned _ovly_region_table[_novly_regions][3] = { | |
438e1e42 | 3418 | {VMA, OSIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ |
c5aa993b JM |
3419 | {..., ..., ...}, |
3420 | } | |
c906108c SS |
3421 | These functions will attempt to update GDB's mappedness state in the |
3422 | symbol section table, based on the target's mappedness state. | |
3423 | ||
3424 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3425 | attempt to detect when the cached copy is invalidated. The main | |
3426 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3427 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3428 | the target (whenever possible). */ |
c906108c SS |
3429 | |
3430 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3431 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3432 | static unsigned cache_novlys = 0; |
c906108c | 3433 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3434 | enum ovly_index |
3435 | { | |
438e1e42 | 3436 | VMA, OSIZE, LMA, MAPPED |
c5aa993b | 3437 | }; |
c906108c | 3438 | |
c378eb4e | 3439 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3440 | |
c906108c | 3441 | static void |
fba45db2 | 3442 | simple_free_overlay_table (void) |
c906108c SS |
3443 | { |
3444 | if (cache_ovly_table) | |
b8c9b27d | 3445 | xfree (cache_ovly_table); |
c5aa993b | 3446 | cache_novlys = 0; |
c906108c SS |
3447 | cache_ovly_table = NULL; |
3448 | cache_ovly_table_base = 0; | |
3449 | } | |
3450 | ||
9216df95 | 3451 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3452 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3453 | |
c906108c | 3454 | static void |
9216df95 | 3455 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3456 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3457 | { |
c378eb4e | 3458 | /* FIXME (alloca): Not safe if array is very large. */ |
224c3ddb | 3459 | gdb_byte *buf = (gdb_byte *) alloca (len * size); |
c5aa993b | 3460 | int i; |
c906108c | 3461 | |
9216df95 | 3462 | read_memory (memaddr, buf, len * size); |
c906108c | 3463 | for (i = 0; i < len; i++) |
e17a4113 | 3464 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3465 | } |
3466 | ||
3467 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3468 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3469 | |
c5aa993b | 3470 | static int |
fba45db2 | 3471 | simple_read_overlay_table (void) |
c906108c | 3472 | { |
3b7344d5 | 3473 | struct bound_minimal_symbol novlys_msym; |
7c7b6655 | 3474 | struct bound_minimal_symbol ovly_table_msym; |
9216df95 UW |
3475 | struct gdbarch *gdbarch; |
3476 | int word_size; | |
e17a4113 | 3477 | enum bfd_endian byte_order; |
c906108c SS |
3478 | |
3479 | simple_free_overlay_table (); | |
9b27852e | 3480 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
3b7344d5 | 3481 | if (! novlys_msym.minsym) |
c906108c | 3482 | { |
8a3fe4f8 | 3483 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3484 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3485 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3486 | return 0; |
c906108c | 3487 | } |
0d43edd1 | 3488 | |
7c7b6655 TT |
3489 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3490 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3491 | { |
8a3fe4f8 | 3492 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3493 | "`_ovly_table' array\n" |
8a3fe4f8 | 3494 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3495 | return 0; |
3496 | } | |
3497 | ||
7c7b6655 | 3498 | gdbarch = get_objfile_arch (ovly_table_msym.objfile); |
9216df95 | 3499 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3500 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3501 | |
77e371c0 TT |
3502 | cache_novlys = read_memory_integer (BMSYMBOL_VALUE_ADDRESS (novlys_msym), |
3503 | 4, byte_order); | |
0d43edd1 | 3504 | cache_ovly_table |
224c3ddb | 3505 | = (unsigned int (*)[4]) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); |
77e371c0 | 3506 | cache_ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym); |
0d43edd1 | 3507 | read_target_long_array (cache_ovly_table_base, |
777ea8f1 | 3508 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3509 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3510 | |
c5aa993b | 3511 | return 1; /* SUCCESS */ |
c906108c SS |
3512 | } |
3513 | ||
5417f6dc | 3514 | /* Function: simple_overlay_update_1 |
c906108c SS |
3515 | A helper function for simple_overlay_update. Assuming a cached copy |
3516 | of _ovly_table exists, look through it to find an entry whose vma, | |
3517 | lma and size match those of OSECT. Re-read the entry and make sure | |
3518 | it still matches OSECT (else the table may no longer be valid). | |
3519 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3520 | success, 0 for failure. */ | |
3521 | ||
3522 | static int | |
fba45db2 | 3523 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c | 3524 | { |
764c99c1 | 3525 | int i; |
fbd35540 | 3526 | asection *bsect = osect->the_bfd_section; |
9216df95 UW |
3527 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3528 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3529 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3530 | |
c906108c | 3531 | for (i = 0; i < cache_novlys; i++) |
fbd35540 | 3532 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3533 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c | 3534 | { |
9216df95 UW |
3535 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3536 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3537 | 4, word_size, byte_order); |
fbd35540 | 3538 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3539 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c SS |
3540 | { |
3541 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3542 | return 1; | |
3543 | } | |
c378eb4e | 3544 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3545 | return 0; |
3546 | } | |
3547 | return 0; | |
3548 | } | |
3549 | ||
3550 | /* Function: simple_overlay_update | |
5417f6dc RM |
3551 | If OSECT is NULL, then update all sections' mapped state |
3552 | (after re-reading the entire target _ovly_table). | |
3553 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3554 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3555 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3556 | re-read the entire cache, and go ahead and update all sections. */ |
3557 | ||
1c772458 | 3558 | void |
fba45db2 | 3559 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3560 | { |
c5aa993b | 3561 | struct objfile *objfile; |
c906108c | 3562 | |
c378eb4e | 3563 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3564 | if (osect) |
c378eb4e | 3565 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3566 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3567 | { |
3568 | /* Does its cached location match what's currently in the | |
3569 | symtab? */ | |
3b7344d5 | 3570 | struct bound_minimal_symbol minsym |
9cc89665 MS |
3571 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
3572 | ||
3b7344d5 | 3573 | if (minsym.minsym == NULL) |
9cc89665 MS |
3574 | error (_("Error reading inferior's overlay table: couldn't " |
3575 | "find `_ovly_table' array\n" | |
3576 | "in inferior. Use `overlay manual' mode.")); | |
3577 | ||
77e371c0 | 3578 | if (cache_ovly_table_base == BMSYMBOL_VALUE_ADDRESS (minsym)) |
9cc89665 MS |
3579 | /* Then go ahead and try to look up this single section in |
3580 | the cache. */ | |
3581 | if (simple_overlay_update_1 (osect)) | |
3582 | /* Found it! We're done. */ | |
3583 | return; | |
3584 | } | |
c906108c SS |
3585 | |
3586 | /* Cached table no good: need to read the entire table anew. | |
3587 | Or else we want all the sections, in which case it's actually | |
3588 | more efficient to read the whole table in one block anyway. */ | |
3589 | ||
0d43edd1 JB |
3590 | if (! simple_read_overlay_table ()) |
3591 | return; | |
3592 | ||
c378eb4e | 3593 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3594 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3595 | if (section_is_overlay (osect)) |
c5aa993b | 3596 | { |
764c99c1 | 3597 | int i; |
fbd35540 | 3598 | asection *bsect = osect->the_bfd_section; |
c5aa993b | 3599 | |
c5aa993b | 3600 | for (i = 0; i < cache_novlys; i++) |
fbd35540 | 3601 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3602 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c378eb4e | 3603 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3604 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3605 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3606 | } |
3607 | } | |
c906108c SS |
3608 | } |
3609 | ||
086df311 DJ |
3610 | /* Set the output sections and output offsets for section SECTP in |
3611 | ABFD. The relocation code in BFD will read these offsets, so we | |
3612 | need to be sure they're initialized. We map each section to itself, | |
3613 | with no offset; this means that SECTP->vma will be honored. */ | |
3614 | ||
3615 | static void | |
3616 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3617 | { | |
3618 | sectp->output_section = sectp; | |
3619 | sectp->output_offset = 0; | |
3620 | } | |
3621 | ||
ac8035ab TG |
3622 | /* Default implementation for sym_relocate. */ |
3623 | ||
ac8035ab TG |
3624 | bfd_byte * |
3625 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3626 | bfd_byte *buf) | |
3627 | { | |
3019eac3 DE |
3628 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3629 | DWO file. */ | |
3630 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3631 | |
3632 | /* We're only interested in sections with relocation | |
3633 | information. */ | |
3634 | if ((sectp->flags & SEC_RELOC) == 0) | |
3635 | return NULL; | |
3636 | ||
3637 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3638 | all sections begin at 0. */ | |
3639 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3640 | ||
3641 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3642 | } | |
3643 | ||
086df311 DJ |
3644 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3645 | contents are stored in BUF if it is non-NULL, or returned in a | |
3646 | malloc'd buffer otherwise. | |
3647 | ||
3648 | For some platforms and debug info formats, shared libraries contain | |
3649 | relocations against the debug sections (particularly for DWARF-2; | |
3650 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3651 | the version of the linker in use). Also, ELF object files naturally | |
3652 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3653 | the relocations in order to get the locations of symbols correct. |
3654 | Another example that may require relocation processing, is the | |
3655 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3656 | debug section. */ | |
086df311 DJ |
3657 | |
3658 | bfd_byte * | |
ac8035ab TG |
3659 | symfile_relocate_debug_section (struct objfile *objfile, |
3660 | asection *sectp, bfd_byte *buf) | |
086df311 | 3661 | { |
ac8035ab | 3662 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3663 | |
ac8035ab | 3664 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3665 | } |
c906108c | 3666 | |
31d99776 DJ |
3667 | struct symfile_segment_data * |
3668 | get_symfile_segment_data (bfd *abfd) | |
3669 | { | |
00b5771c | 3670 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3671 | |
3672 | if (sf == NULL) | |
3673 | return NULL; | |
3674 | ||
3675 | return sf->sym_segments (abfd); | |
3676 | } | |
3677 | ||
3678 | void | |
3679 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3680 | { | |
3681 | xfree (data->segment_bases); | |
3682 | xfree (data->segment_sizes); | |
3683 | xfree (data->segment_info); | |
3684 | xfree (data); | |
3685 | } | |
3686 | ||
28c32713 JB |
3687 | /* Given: |
3688 | - DATA, containing segment addresses from the object file ABFD, and | |
3689 | the mapping from ABFD's sections onto the segments that own them, | |
3690 | and | |
3691 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3692 | segment addresses reported by the target, | |
3693 | store the appropriate offsets for each section in OFFSETS. | |
3694 | ||
3695 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3696 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3697 | ||
8d385431 DJ |
3698 | If there are more entries, then ignore the extra. The target may |
3699 | not be able to distinguish between an empty data segment and a | |
3700 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3701 | |
31d99776 | 3702 | int |
3189cb12 DE |
3703 | symfile_map_offsets_to_segments (bfd *abfd, |
3704 | const struct symfile_segment_data *data, | |
31d99776 DJ |
3705 | struct section_offsets *offsets, |
3706 | int num_segment_bases, | |
3707 | const CORE_ADDR *segment_bases) | |
3708 | { | |
3709 | int i; | |
3710 | asection *sect; | |
3711 | ||
28c32713 JB |
3712 | /* It doesn't make sense to call this function unless you have some |
3713 | segment base addresses. */ | |
202b96c1 | 3714 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3715 | |
31d99776 DJ |
3716 | /* If we do not have segment mappings for the object file, we |
3717 | can not relocate it by segments. */ | |
3718 | gdb_assert (data != NULL); | |
3719 | gdb_assert (data->num_segments > 0); | |
3720 | ||
31d99776 DJ |
3721 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3722 | { | |
31d99776 DJ |
3723 | int which = data->segment_info[i]; |
3724 | ||
28c32713 JB |
3725 | gdb_assert (0 <= which && which <= data->num_segments); |
3726 | ||
3727 | /* Don't bother computing offsets for sections that aren't | |
3728 | loaded as part of any segment. */ | |
3729 | if (! which) | |
3730 | continue; | |
3731 | ||
3732 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3733 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3734 | if (which > num_segment_bases) |
28c32713 | 3735 | which = num_segment_bases; |
31d99776 | 3736 | |
28c32713 JB |
3737 | offsets->offsets[i] = (segment_bases[which - 1] |
3738 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3739 | } |
3740 | ||
3741 | return 1; | |
3742 | } | |
3743 | ||
3744 | static void | |
3745 | symfile_find_segment_sections (struct objfile *objfile) | |
3746 | { | |
3747 | bfd *abfd = objfile->obfd; | |
3748 | int i; | |
3749 | asection *sect; | |
3750 | struct symfile_segment_data *data; | |
3751 | ||
3752 | data = get_symfile_segment_data (objfile->obfd); | |
3753 | if (data == NULL) | |
3754 | return; | |
3755 | ||
3756 | if (data->num_segments != 1 && data->num_segments != 2) | |
3757 | { | |
3758 | free_symfile_segment_data (data); | |
3759 | return; | |
3760 | } | |
3761 | ||
3762 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3763 | { | |
31d99776 DJ |
3764 | int which = data->segment_info[i]; |
3765 | ||
3766 | if (which == 1) | |
3767 | { | |
3768 | if (objfile->sect_index_text == -1) | |
3769 | objfile->sect_index_text = sect->index; | |
3770 | ||
3771 | if (objfile->sect_index_rodata == -1) | |
3772 | objfile->sect_index_rodata = sect->index; | |
3773 | } | |
3774 | else if (which == 2) | |
3775 | { | |
3776 | if (objfile->sect_index_data == -1) | |
3777 | objfile->sect_index_data = sect->index; | |
3778 | ||
3779 | if (objfile->sect_index_bss == -1) | |
3780 | objfile->sect_index_bss = sect->index; | |
3781 | } | |
3782 | } | |
3783 | ||
3784 | free_symfile_segment_data (data); | |
3785 | } | |
3786 | ||
76ad5e1e NB |
3787 | /* Listen for free_objfile events. */ |
3788 | ||
3789 | static void | |
3790 | symfile_free_objfile (struct objfile *objfile) | |
3791 | { | |
c33b2f12 MM |
3792 | /* Remove the target sections owned by this objfile. */ |
3793 | if (objfile != NULL) | |
76ad5e1e NB |
3794 | remove_target_sections ((void *) objfile); |
3795 | } | |
3796 | ||
540c2971 DE |
3797 | /* Wrapper around the quick_symbol_functions expand_symtabs_matching "method". |
3798 | Expand all symtabs that match the specified criteria. | |
3799 | See quick_symbol_functions.expand_symtabs_matching for details. */ | |
3800 | ||
3801 | void | |
14bc53a8 PA |
3802 | expand_symtabs_matching |
3803 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
b5ec771e | 3804 | const lookup_name_info &lookup_name, |
14bc53a8 PA |
3805 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
3806 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
3807 | enum search_domain kind) | |
540c2971 DE |
3808 | { |
3809 | struct objfile *objfile; | |
3810 | ||
3811 | ALL_OBJFILES (objfile) | |
3812 | { | |
3813 | if (objfile->sf) | |
bb4142cf | 3814 | objfile->sf->qf->expand_symtabs_matching (objfile, file_matcher, |
b5ec771e | 3815 | lookup_name, |
276d885b | 3816 | symbol_matcher, |
14bc53a8 | 3817 | expansion_notify, kind); |
540c2971 DE |
3818 | } |
3819 | } | |
3820 | ||
3821 | /* Wrapper around the quick_symbol_functions map_symbol_filenames "method". | |
3822 | Map function FUN over every file. | |
3823 | See quick_symbol_functions.map_symbol_filenames for details. */ | |
3824 | ||
3825 | void | |
bb4142cf DE |
3826 | map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
3827 | int need_fullname) | |
540c2971 DE |
3828 | { |
3829 | struct objfile *objfile; | |
3830 | ||
3831 | ALL_OBJFILES (objfile) | |
3832 | { | |
3833 | if (objfile->sf) | |
3834 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data, | |
3835 | need_fullname); | |
3836 | } | |
3837 | } | |
3838 | ||
32fa66eb SM |
3839 | #if GDB_SELF_TEST |
3840 | ||
3841 | namespace selftests { | |
3842 | namespace filename_language { | |
3843 | ||
32fa66eb SM |
3844 | static void test_filename_language () |
3845 | { | |
3846 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3847 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3848 | |
3849 | /* Test deducing an unknown extension. */ | |
3850 | language lang = deduce_language_from_filename ("myfile.blah"); | |
3851 | SELF_CHECK (lang == language_unknown); | |
3852 | ||
3853 | /* Test deducing a known extension. */ | |
3854 | lang = deduce_language_from_filename ("myfile.c"); | |
3855 | SELF_CHECK (lang == language_c); | |
3856 | ||
3857 | /* Test adding a new extension using the internal API. */ | |
3858 | add_filename_language (".blah", language_pascal); | |
3859 | lang = deduce_language_from_filename ("myfile.blah"); | |
3860 | SELF_CHECK (lang == language_pascal); | |
3861 | } | |
3862 | ||
3863 | static void | |
3864 | test_set_ext_lang_command () | |
3865 | { | |
3866 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3867 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3868 | |
3869 | /* Confirm that the .hello extension is not known. */ | |
3870 | language lang = deduce_language_from_filename ("cake.hello"); | |
3871 | SELF_CHECK (lang == language_unknown); | |
3872 | ||
3873 | /* Test adding a new extension using the CLI command. */ | |
3874 | gdb::unique_xmalloc_ptr<char> args_holder (xstrdup (".hello rust")); | |
3875 | ext_args = args_holder.get (); | |
3876 | set_ext_lang_command (NULL, 1, NULL); | |
3877 | ||
3878 | lang = deduce_language_from_filename ("cake.hello"); | |
3879 | SELF_CHECK (lang == language_rust); | |
3880 | ||
3881 | /* Test overriding an existing extension using the CLI command. */ | |
593e3209 | 3882 | int size_before = filename_language_table.size (); |
32fa66eb SM |
3883 | args_holder.reset (xstrdup (".hello pascal")); |
3884 | ext_args = args_holder.get (); | |
3885 | set_ext_lang_command (NULL, 1, NULL); | |
593e3209 | 3886 | int size_after = filename_language_table.size (); |
32fa66eb SM |
3887 | |
3888 | lang = deduce_language_from_filename ("cake.hello"); | |
3889 | SELF_CHECK (lang == language_pascal); | |
3890 | SELF_CHECK (size_before == size_after); | |
3891 | } | |
3892 | ||
3893 | } /* namespace filename_language */ | |
3894 | } /* namespace selftests */ | |
3895 | ||
3896 | #endif /* GDB_SELF_TEST */ | |
3897 | ||
c906108c | 3898 | void |
fba45db2 | 3899 | _initialize_symfile (void) |
c906108c SS |
3900 | { |
3901 | struct cmd_list_element *c; | |
c5aa993b | 3902 | |
76ad5e1e NB |
3903 | observer_attach_free_objfile (symfile_free_objfile); |
3904 | ||
97cbe998 | 3905 | #define READNOW_READNEVER_HELP \ |
8ca2f0b9 TT |
3906 | "The '-readnow' option will cause GDB to read the entire symbol file\n\ |
3907 | immediately. This makes the command slower, but may make future operations\n\ | |
97cbe998 SDJ |
3908 | faster.\n\ |
3909 | The '-readnever' option will prevent GDB from reading the symbol file's\n\ | |
3910 | symbolic debug information." | |
8ca2f0b9 | 3911 | |
1a966eab AC |
3912 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3913 | Load symbol table from executable file FILE.\n\ | |
97cbe998 | 3914 | Usage: symbol-file [-readnow | -readnever] FILE\n\ |
c906108c | 3915 | The `file' command can also load symbol tables, as well as setting the file\n\ |
97cbe998 | 3916 | to execute.\n" READNOW_READNEVER_HELP), &cmdlist); |
5ba2abeb | 3917 | set_cmd_completer (c, filename_completer); |
c906108c | 3918 | |
1a966eab | 3919 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3920 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
97cbe998 SDJ |
3921 | Usage: add-symbol-file FILE ADDR [-readnow | -readnever | \ |
3922 | -s SECT-NAME SECT-ADDR]...\n\ | |
02ca603a TT |
3923 | ADDR is the starting address of the file's text.\n\ |
3924 | Each '-s' argument provides a section name and address, and\n\ | |
db162d44 | 3925 | should be specified if the data and bss segments are not contiguous\n\ |
8ca2f0b9 | 3926 | with the text. SECT-NAME is a section name to be loaded at SECT-ADDR.\n" |
97cbe998 | 3927 | READNOW_READNEVER_HELP), |
c906108c | 3928 | &cmdlist); |
5ba2abeb | 3929 | set_cmd_completer (c, filename_completer); |
c906108c | 3930 | |
63644780 NB |
3931 | c = add_cmd ("remove-symbol-file", class_files, |
3932 | remove_symbol_file_command, _("\ | |
3933 | Remove a symbol file added via the add-symbol-file command.\n\ | |
3934 | Usage: remove-symbol-file FILENAME\n\ | |
3935 | remove-symbol-file -a ADDRESS\n\ | |
3936 | The file to remove can be identified by its filename or by an address\n\ | |
3937 | that lies within the boundaries of this symbol file in memory."), | |
3938 | &cmdlist); | |
3939 | ||
1a966eab AC |
3940 | c = add_cmd ("load", class_files, load_command, _("\ |
3941 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd | 3942 | for access from GDB.\n\ |
8ca2f0b9 | 3943 | Usage: load [FILE] [OFFSET]\n\ |
5cf30ebf LM |
3944 | An optional load OFFSET may also be given as a literal address.\n\ |
3945 | When OFFSET is provided, FILE must also be provided. FILE can be provided\n\ | |
8ca2f0b9 | 3946 | on its own."), &cmdlist); |
5ba2abeb | 3947 | set_cmd_completer (c, filename_completer); |
c906108c | 3948 | |
c5aa993b | 3949 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3950 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3951 | "overlay ", 0, &cmdlist); |
3952 | ||
3953 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3954 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3955 | ||
c5aa993b | 3956 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3957 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3958 | |
c5aa993b | 3959 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3960 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3961 | |
c5aa993b | 3962 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3963 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3964 | |
c5aa993b | 3965 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3966 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3967 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3968 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3969 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3970 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3971 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3972 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3973 | |
3974 | /* Filename extension to source language lookup table: */ | |
26c41df3 AC |
3975 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3976 | &ext_args, _("\ | |
3977 | Set mapping between filename extension and source language."), _("\ | |
3978 | Show mapping between filename extension and source language."), _("\ | |
3979 | Usage: set extension-language .foo bar"), | |
3980 | set_ext_lang_command, | |
920d2a44 | 3981 | show_ext_args, |
26c41df3 | 3982 | &setlist, &showlist); |
c906108c | 3983 | |
c5aa993b | 3984 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3985 | _("All filename extensions associated with a source language.")); |
917317f4 | 3986 | |
525226b5 AC |
3987 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3988 | &debug_file_directory, _("\ | |
24ddea62 JK |
3989 | Set the directories where separate debug symbols are searched for."), _("\ |
3990 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3991 | Separate debug symbols are first searched for in the same\n\ |
3992 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3993 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3994 | each global debug-file-directory component prepended."), |
525226b5 | 3995 | NULL, |
920d2a44 | 3996 | show_debug_file_directory, |
525226b5 | 3997 | &setlist, &showlist); |
770e7fc7 DE |
3998 | |
3999 | add_setshow_enum_cmd ("symbol-loading", no_class, | |
4000 | print_symbol_loading_enums, &print_symbol_loading, | |
4001 | _("\ | |
4002 | Set printing of symbol loading messages."), _("\ | |
4003 | Show printing of symbol loading messages."), _("\ | |
4004 | off == turn all messages off\n\ | |
4005 | brief == print messages for the executable,\n\ | |
4006 | and brief messages for shared libraries\n\ | |
4007 | full == print messages for the executable,\n\ | |
4008 | and messages for each shared library."), | |
4009 | NULL, | |
4010 | NULL, | |
4011 | &setprintlist, &showprintlist); | |
c4dcb155 SM |
4012 | |
4013 | add_setshow_boolean_cmd ("separate-debug-file", no_class, | |
4014 | &separate_debug_file_debug, _("\ | |
4015 | Set printing of separate debug info file search debug."), _("\ | |
4016 | Show printing of separate debug info file search debug."), _("\ | |
4017 | When on, GDB prints the searched locations while looking for separate debug \ | |
4018 | info files."), NULL, NULL, &setdebuglist, &showdebuglist); | |
32fa66eb SM |
4019 | |
4020 | #if GDB_SELF_TEST | |
4021 | selftests::register_test | |
4022 | ("filename_language", selftests::filename_language::test_filename_language); | |
4023 | selftests::register_test | |
4024 | ("set_ext_lang_command", | |
4025 | selftests::filename_language::test_set_ext_lang_command); | |
4026 | #endif | |
c906108c | 4027 | } |