Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
61baf725 | 3 | Copyright (C) 1990-2017 Free Software Foundation, Inc. |
8926118c | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support, using pieces from other GDB modules. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
e17c207e | 23 | #include "arch-utils.h" |
086df311 | 24 | #include "bfdlink.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "gdbtypes.h" | |
27 | #include "gdbcore.h" | |
28 | #include "frame.h" | |
29 | #include "target.h" | |
30 | #include "value.h" | |
31 | #include "symfile.h" | |
32 | #include "objfiles.h" | |
0378c332 | 33 | #include "source.h" |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "breakpoint.h" | |
36 | #include "language.h" | |
37 | #include "complaints.h" | |
38 | #include "demangle.h" | |
fb14de7b UW |
39 | #include "inferior.h" |
40 | #include "regcache.h" | |
5b5d99cf | 41 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 42 | #include "gdb-stabs.h" |
04ea0df1 | 43 | #include "gdb_obstack.h" |
d75b5104 | 44 | #include "completer.h" |
af5f3db6 | 45 | #include "bcache.h" |
2de7ced7 | 46 | #include "hashtab.h" |
dbda9972 | 47 | #include "readline/readline.h" |
fe898f56 | 48 | #include "block.h" |
ea53e89f | 49 | #include "observer.h" |
c1bd25fd | 50 | #include "exec.h" |
9bdcbae7 | 51 | #include "parser-defs.h" |
8756216b | 52 | #include "varobj.h" |
77069918 | 53 | #include "elf-bfd.h" |
e85a822c | 54 | #include "solib.h" |
f1838a98 | 55 | #include "remote.h" |
1bfeeb0f | 56 | #include "stack.h" |
cbb099e8 | 57 | #include "gdb_bfd.h" |
529480d0 | 58 | #include "cli/cli-utils.h" |
0efef640 | 59 | #include "common/byte-vector.h" |
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. */ | |
c906108c | 84 | |
c378eb4e | 85 | /* Functions this file defines. */ |
c906108c | 86 | |
ecf45d2c | 87 | static void symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
b15cc25c | 88 | objfile_flags flags); |
d7db6da9 | 89 | |
00b5771c | 90 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 91 | |
a14ed312 | 92 | static void overlay_invalidate_all (void); |
c906108c | 93 | |
a14ed312 | 94 | static void simple_free_overlay_table (void); |
c906108c | 95 | |
e17a4113 UW |
96 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
97 | enum bfd_endian); | |
c906108c | 98 | |
a14ed312 | 99 | static int simple_read_overlay_table (void); |
c906108c | 100 | |
a14ed312 | 101 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 102 | |
31d99776 DJ |
103 | static void symfile_find_segment_sections (struct objfile *objfile); |
104 | ||
c906108c SS |
105 | /* List of all available sym_fns. On gdb startup, each object file reader |
106 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 107 | prepared to read. */ |
c906108c | 108 | |
905014d7 | 109 | struct registered_sym_fns |
c256e171 | 110 | { |
905014d7 SM |
111 | registered_sym_fns (bfd_flavour sym_flavour_, const struct sym_fns *sym_fns_) |
112 | : sym_flavour (sym_flavour_), sym_fns (sym_fns_) | |
113 | {} | |
114 | ||
c256e171 DE |
115 | /* BFD flavour that we handle. */ |
116 | enum bfd_flavour sym_flavour; | |
117 | ||
118 | /* The "vtable" of symbol functions. */ | |
119 | const struct sym_fns *sym_fns; | |
905014d7 | 120 | }; |
c256e171 | 121 | |
905014d7 | 122 | static std::vector<registered_sym_fns> symtab_fns; |
c906108c | 123 | |
770e7fc7 DE |
124 | /* Values for "set print symbol-loading". */ |
125 | ||
126 | const char print_symbol_loading_off[] = "off"; | |
127 | const char print_symbol_loading_brief[] = "brief"; | |
128 | const char print_symbol_loading_full[] = "full"; | |
129 | static const char *print_symbol_loading_enums[] = | |
130 | { | |
131 | print_symbol_loading_off, | |
132 | print_symbol_loading_brief, | |
133 | print_symbol_loading_full, | |
134 | NULL | |
135 | }; | |
136 | static const char *print_symbol_loading = print_symbol_loading_full; | |
137 | ||
b7209cb4 FF |
138 | /* If non-zero, shared library symbols will be added automatically |
139 | when the inferior is created, new libraries are loaded, or when | |
140 | attaching to the inferior. This is almost always what users will | |
141 | want to have happen; but for very large programs, the startup time | |
142 | will be excessive, and so if this is a problem, the user can clear | |
143 | this flag and then add the shared library symbols as needed. Note | |
144 | that there is a potential for confusion, since if the shared | |
c906108c | 145 | library symbols are not loaded, commands like "info fun" will *not* |
0d14a781 | 146 | report all the functions that are actually present. */ |
c906108c SS |
147 | |
148 | int auto_solib_add = 1; | |
c906108c | 149 | \f |
c5aa993b | 150 | |
770e7fc7 DE |
151 | /* Return non-zero if symbol-loading messages should be printed. |
152 | FROM_TTY is the standard from_tty argument to gdb commands. | |
153 | If EXEC is non-zero the messages are for the executable. | |
154 | Otherwise, messages are for shared libraries. | |
155 | If FULL is non-zero then the caller is printing a detailed message. | |
156 | E.g., the message includes the shared library name. | |
157 | Otherwise, the caller is printing a brief "summary" message. */ | |
158 | ||
159 | int | |
160 | print_symbol_loading_p (int from_tty, int exec, int full) | |
161 | { | |
162 | if (!from_tty && !info_verbose) | |
163 | return 0; | |
164 | ||
165 | if (exec) | |
166 | { | |
167 | /* We don't check FULL for executables, there are few such | |
168 | messages, therefore brief == full. */ | |
169 | return print_symbol_loading != print_symbol_loading_off; | |
170 | } | |
171 | if (full) | |
172 | return print_symbol_loading == print_symbol_loading_full; | |
173 | return print_symbol_loading == print_symbol_loading_brief; | |
174 | } | |
175 | ||
0d14a781 | 176 | /* True if we are reading a symbol table. */ |
c906108c SS |
177 | |
178 | int currently_reading_symtab = 0; | |
179 | ||
ccefe4c4 TT |
180 | /* Increment currently_reading_symtab and return a cleanup that can be |
181 | used to decrement it. */ | |
3b7bacac | 182 | |
c83dd867 | 183 | scoped_restore_tmpl<int> |
ccefe4c4 | 184 | increment_reading_symtab (void) |
c906108c | 185 | { |
c83dd867 TT |
186 | gdb_assert (currently_reading_symtab >= 0); |
187 | return make_scoped_restore (¤tly_reading_symtab, | |
188 | currently_reading_symtab + 1); | |
c906108c SS |
189 | } |
190 | ||
5417f6dc RM |
191 | /* Remember the lowest-addressed loadable section we've seen. |
192 | This function is called via bfd_map_over_sections. | |
c906108c SS |
193 | |
194 | In case of equal vmas, the section with the largest size becomes the | |
195 | lowest-addressed loadable section. | |
196 | ||
197 | If the vmas and sizes are equal, the last section is considered the | |
198 | lowest-addressed loadable section. */ | |
199 | ||
200 | void | |
4efb68b1 | 201 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 202 | { |
c5aa993b | 203 | asection **lowest = (asection **) obj; |
c906108c | 204 | |
eb73e134 | 205 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
206 | return; |
207 | if (!*lowest) | |
208 | *lowest = sect; /* First loadable section */ | |
209 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
210 | *lowest = sect; /* A lower loadable section */ | |
211 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
212 | && (bfd_section_size (abfd, (*lowest)) | |
213 | <= bfd_section_size (abfd, sect))) | |
214 | *lowest = sect; | |
215 | } | |
216 | ||
d76488d8 TT |
217 | /* Create a new section_addr_info, with room for NUM_SECTIONS. The |
218 | new object's 'num_sections' field is set to 0; it must be updated | |
219 | by the caller. */ | |
a39a16c4 MM |
220 | |
221 | struct section_addr_info * | |
222 | alloc_section_addr_info (size_t num_sections) | |
223 | { | |
224 | struct section_addr_info *sap; | |
225 | size_t size; | |
226 | ||
227 | size = (sizeof (struct section_addr_info) | |
228 | + sizeof (struct other_sections) * (num_sections - 1)); | |
229 | sap = (struct section_addr_info *) xmalloc (size); | |
230 | memset (sap, 0, size); | |
a39a16c4 MM |
231 | |
232 | return sap; | |
233 | } | |
62557bbc KB |
234 | |
235 | /* Build (allocate and populate) a section_addr_info struct from | |
c378eb4e | 236 | an existing section table. */ |
62557bbc KB |
237 | |
238 | extern struct section_addr_info * | |
0542c86d PA |
239 | build_section_addr_info_from_section_table (const struct target_section *start, |
240 | const struct target_section *end) | |
62557bbc KB |
241 | { |
242 | struct section_addr_info *sap; | |
0542c86d | 243 | const struct target_section *stp; |
62557bbc KB |
244 | int oidx; |
245 | ||
a39a16c4 | 246 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
247 | |
248 | for (stp = start, oidx = 0; stp != end; stp++) | |
249 | { | |
2b2848e2 DE |
250 | struct bfd_section *asect = stp->the_bfd_section; |
251 | bfd *abfd = asect->owner; | |
252 | ||
253 | if (bfd_get_section_flags (abfd, asect) & (SEC_ALLOC | SEC_LOAD) | |
a39a16c4 | 254 | && oidx < end - start) |
62557bbc KB |
255 | { |
256 | sap->other[oidx].addr = stp->addr; | |
2b2848e2 DE |
257 | sap->other[oidx].name = xstrdup (bfd_section_name (abfd, asect)); |
258 | sap->other[oidx].sectindex = gdb_bfd_section_index (abfd, asect); | |
62557bbc KB |
259 | oidx++; |
260 | } | |
261 | } | |
262 | ||
d76488d8 TT |
263 | sap->num_sections = oidx; |
264 | ||
62557bbc KB |
265 | return sap; |
266 | } | |
267 | ||
82ccf5a5 | 268 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 269 | |
82ccf5a5 JK |
270 | static struct section_addr_info * |
271 | build_section_addr_info_from_bfd (bfd *abfd) | |
089b4803 TG |
272 | { |
273 | struct section_addr_info *sap; | |
274 | int i; | |
275 | struct bfd_section *sec; | |
276 | ||
82ccf5a5 JK |
277 | sap = alloc_section_addr_info (bfd_count_sections (abfd)); |
278 | for (i = 0, sec = abfd->sections; sec != NULL; sec = sec->next) | |
279 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) | |
012836ea | 280 | { |
82ccf5a5 JK |
281 | sap->other[i].addr = bfd_get_section_vma (abfd, sec); |
282 | sap->other[i].name = xstrdup (bfd_get_section_name (abfd, sec)); | |
65cf3563 | 283 | sap->other[i].sectindex = gdb_bfd_section_index (abfd, sec); |
012836ea JK |
284 | i++; |
285 | } | |
d76488d8 TT |
286 | |
287 | sap->num_sections = i; | |
288 | ||
089b4803 TG |
289 | return sap; |
290 | } | |
291 | ||
82ccf5a5 JK |
292 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
293 | ||
294 | struct section_addr_info * | |
295 | build_section_addr_info_from_objfile (const struct objfile *objfile) | |
296 | { | |
297 | struct section_addr_info *sap; | |
298 | int i; | |
299 | ||
300 | /* Before reread_symbols gets rewritten it is not safe to call: | |
301 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
302 | */ | |
303 | sap = build_section_addr_info_from_bfd (objfile->obfd); | |
d76488d8 | 304 | for (i = 0; i < sap->num_sections; i++) |
82ccf5a5 JK |
305 | { |
306 | int sectindex = sap->other[i].sectindex; | |
307 | ||
308 | sap->other[i].addr += objfile->section_offsets->offsets[sectindex]; | |
309 | } | |
310 | return sap; | |
311 | } | |
62557bbc | 312 | |
c378eb4e | 313 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ |
62557bbc KB |
314 | |
315 | extern void | |
316 | free_section_addr_info (struct section_addr_info *sap) | |
317 | { | |
318 | int idx; | |
319 | ||
a39a16c4 | 320 | for (idx = 0; idx < sap->num_sections; idx++) |
d76488d8 | 321 | xfree (sap->other[idx].name); |
b8c9b27d | 322 | xfree (sap); |
62557bbc KB |
323 | } |
324 | ||
e8289572 | 325 | /* Initialize OBJFILE's sect_index_* members. */ |
3b7bacac | 326 | |
e8289572 JB |
327 | static void |
328 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 329 | { |
e8289572 | 330 | asection *sect; |
c906108c | 331 | int i; |
5417f6dc | 332 | |
b8fbeb18 | 333 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 334 | if (sect) |
b8fbeb18 EZ |
335 | objfile->sect_index_text = sect->index; |
336 | ||
337 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 338 | if (sect) |
b8fbeb18 EZ |
339 | objfile->sect_index_data = sect->index; |
340 | ||
341 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 342 | if (sect) |
b8fbeb18 EZ |
343 | objfile->sect_index_bss = sect->index; |
344 | ||
345 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 346 | if (sect) |
b8fbeb18 EZ |
347 | objfile->sect_index_rodata = sect->index; |
348 | ||
bbcd32ad FF |
349 | /* This is where things get really weird... We MUST have valid |
350 | indices for the various sect_index_* members or gdb will abort. | |
351 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
352 | accomodate that. First, check for a file with the standard |
353 | one or two segments. */ | |
354 | ||
355 | symfile_find_segment_sections (objfile); | |
356 | ||
357 | /* Except when explicitly adding symbol files at some address, | |
358 | section_offsets contains nothing but zeros, so it doesn't matter | |
359 | which slot in section_offsets the individual sect_index_* members | |
360 | index into. So if they are all zero, it is safe to just point | |
361 | all the currently uninitialized indices to the first slot. But | |
362 | beware: if this is the main executable, it may be relocated | |
363 | later, e.g. by the remote qOffsets packet, and then this will | |
364 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
365 | |
366 | for (i = 0; i < objfile->num_sections; i++) | |
367 | { | |
368 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
369 | { | |
370 | break; | |
371 | } | |
372 | } | |
373 | if (i == objfile->num_sections) | |
374 | { | |
375 | if (objfile->sect_index_text == -1) | |
376 | objfile->sect_index_text = 0; | |
377 | if (objfile->sect_index_data == -1) | |
378 | objfile->sect_index_data = 0; | |
379 | if (objfile->sect_index_bss == -1) | |
380 | objfile->sect_index_bss = 0; | |
381 | if (objfile->sect_index_rodata == -1) | |
382 | objfile->sect_index_rodata = 0; | |
383 | } | |
b8fbeb18 | 384 | } |
c906108c | 385 | |
c1bd25fd DJ |
386 | /* The arguments to place_section. */ |
387 | ||
388 | struct place_section_arg | |
389 | { | |
390 | struct section_offsets *offsets; | |
391 | CORE_ADDR lowest; | |
392 | }; | |
393 | ||
394 | /* Find a unique offset to use for loadable section SECT if | |
395 | the user did not provide an offset. */ | |
396 | ||
2c0b251b | 397 | static void |
c1bd25fd DJ |
398 | place_section (bfd *abfd, asection *sect, void *obj) |
399 | { | |
19ba03f4 | 400 | struct place_section_arg *arg = (struct place_section_arg *) obj; |
c1bd25fd DJ |
401 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; |
402 | int done; | |
3bd72c6f | 403 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 404 | |
2711e456 DJ |
405 | /* We are only interested in allocated sections. */ |
406 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
407 | return; |
408 | ||
409 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 410 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
411 | return; |
412 | ||
413 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
414 | start_addr = (arg->lowest + align - 1) & -align; |
415 | ||
c1bd25fd DJ |
416 | do { |
417 | asection *cur_sec; | |
c1bd25fd | 418 | |
c1bd25fd DJ |
419 | done = 1; |
420 | ||
421 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
422 | { | |
423 | int indx = cur_sec->index; | |
c1bd25fd DJ |
424 | |
425 | /* We don't need to compare against ourself. */ | |
426 | if (cur_sec == sect) | |
427 | continue; | |
428 | ||
2711e456 DJ |
429 | /* We can only conflict with allocated sections. */ |
430 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
431 | continue; |
432 | ||
433 | /* If the section offset is 0, either the section has not been placed | |
434 | yet, or it was the lowest section placed (in which case LOWEST | |
435 | will be past its end). */ | |
436 | if (offsets[indx] == 0) | |
437 | continue; | |
438 | ||
439 | /* If this section would overlap us, then we must move up. */ | |
440 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
441 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
442 | { | |
443 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
444 | start_addr = (start_addr + align - 1) & -align; | |
445 | done = 0; | |
3bd72c6f | 446 | break; |
c1bd25fd DJ |
447 | } |
448 | ||
449 | /* Otherwise, we appear to be OK. So far. */ | |
450 | } | |
451 | } | |
452 | while (!done); | |
453 | ||
65cf3563 | 454 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
c1bd25fd | 455 | arg->lowest = start_addr + bfd_get_section_size (sect); |
c1bd25fd | 456 | } |
e8289572 | 457 | |
75242ef4 JK |
458 | /* Store struct section_addr_info as prepared (made relative and with SECTINDEX |
459 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS | |
460 | entries. */ | |
e8289572 JB |
461 | |
462 | void | |
75242ef4 JK |
463 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
464 | int num_sections, | |
3189cb12 | 465 | const struct section_addr_info *addrs) |
e8289572 JB |
466 | { |
467 | int i; | |
468 | ||
75242ef4 | 469 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 470 | |
c378eb4e | 471 | /* Now calculate offsets for section that were specified by the caller. */ |
d76488d8 | 472 | for (i = 0; i < addrs->num_sections; i++) |
e8289572 | 473 | { |
3189cb12 | 474 | const struct other_sections *osp; |
e8289572 | 475 | |
75242ef4 | 476 | osp = &addrs->other[i]; |
5488dafb | 477 | if (osp->sectindex == -1) |
e8289572 JB |
478 | continue; |
479 | ||
c378eb4e | 480 | /* Record all sections in offsets. */ |
e8289572 | 481 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 482 | the BFD index. */ |
75242ef4 JK |
483 | section_offsets->offsets[osp->sectindex] = osp->addr; |
484 | } | |
485 | } | |
486 | ||
1276c759 JK |
487 | /* Transform section name S for a name comparison. prelink can split section |
488 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
489 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
490 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
491 | (`.sbss') section has invalid (increased) virtual address. */ | |
492 | ||
493 | static const char * | |
494 | addr_section_name (const char *s) | |
495 | { | |
496 | if (strcmp (s, ".dynbss") == 0) | |
497 | return ".bss"; | |
498 | if (strcmp (s, ".sdynbss") == 0) | |
499 | return ".sbss"; | |
500 | ||
501 | return s; | |
502 | } | |
503 | ||
82ccf5a5 JK |
504 | /* qsort comparator for addrs_section_sort. Sort entries in ascending order by |
505 | their (name, sectindex) pair. sectindex makes the sort by name stable. */ | |
506 | ||
507 | static int | |
508 | addrs_section_compar (const void *ap, const void *bp) | |
509 | { | |
510 | const struct other_sections *a = *((struct other_sections **) ap); | |
511 | const struct other_sections *b = *((struct other_sections **) bp); | |
22e048c9 | 512 | int retval; |
82ccf5a5 | 513 | |
1276c759 | 514 | retval = strcmp (addr_section_name (a->name), addr_section_name (b->name)); |
82ccf5a5 JK |
515 | if (retval) |
516 | return retval; | |
517 | ||
5488dafb | 518 | return a->sectindex - b->sectindex; |
82ccf5a5 JK |
519 | } |
520 | ||
521 | /* Provide sorted array of pointers to sections of ADDRS. The array is | |
522 | terminated by NULL. Caller is responsible to call xfree for it. */ | |
523 | ||
524 | static struct other_sections ** | |
525 | addrs_section_sort (struct section_addr_info *addrs) | |
526 | { | |
527 | struct other_sections **array; | |
528 | int i; | |
529 | ||
530 | /* `+ 1' for the NULL terminator. */ | |
8d749320 | 531 | array = XNEWVEC (struct other_sections *, addrs->num_sections + 1); |
d76488d8 | 532 | for (i = 0; i < addrs->num_sections; i++) |
82ccf5a5 JK |
533 | array[i] = &addrs->other[i]; |
534 | array[i] = NULL; | |
535 | ||
536 | qsort (array, i, sizeof (*array), addrs_section_compar); | |
537 | ||
538 | return array; | |
539 | } | |
540 | ||
75242ef4 | 541 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
542 | also SECTINDEXes specific to ABFD there. This function can be used to |
543 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
544 | |
545 | void | |
546 | addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd) | |
547 | { | |
548 | asection *lower_sect; | |
75242ef4 JK |
549 | CORE_ADDR lower_offset; |
550 | int i; | |
82ccf5a5 JK |
551 | struct cleanup *my_cleanup; |
552 | struct section_addr_info *abfd_addrs; | |
553 | struct other_sections **addrs_sorted, **abfd_addrs_sorted; | |
554 | struct other_sections **addrs_to_abfd_addrs; | |
75242ef4 JK |
555 | |
556 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
557 | continguous sections. */ |
558 | lower_sect = NULL; | |
559 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
560 | if (lower_sect == NULL) |
561 | { | |
562 | warning (_("no loadable sections found in added symbol-file %s"), | |
563 | bfd_get_filename (abfd)); | |
564 | lower_offset = 0; | |
e8289572 | 565 | } |
75242ef4 JK |
566 | else |
567 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
568 | ||
82ccf5a5 JK |
569 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
570 | in ABFD. Section names are not unique - there can be multiple sections of | |
571 | the same name. Also the sections of the same name do not have to be | |
572 | adjacent to each other. Some sections may be present only in one of the | |
573 | files. Even sections present in both files do not have to be in the same | |
574 | order. | |
575 | ||
576 | Use stable sort by name for the sections in both files. Then linearly | |
577 | scan both lists matching as most of the entries as possible. */ | |
578 | ||
579 | addrs_sorted = addrs_section_sort (addrs); | |
580 | my_cleanup = make_cleanup (xfree, addrs_sorted); | |
581 | ||
582 | abfd_addrs = build_section_addr_info_from_bfd (abfd); | |
583 | make_cleanup_free_section_addr_info (abfd_addrs); | |
584 | abfd_addrs_sorted = addrs_section_sort (abfd_addrs); | |
585 | make_cleanup (xfree, abfd_addrs_sorted); | |
586 | ||
c378eb4e MS |
587 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
588 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 | 589 | |
8d749320 | 590 | addrs_to_abfd_addrs = XCNEWVEC (struct other_sections *, addrs->num_sections); |
82ccf5a5 JK |
591 | make_cleanup (xfree, addrs_to_abfd_addrs); |
592 | ||
593 | while (*addrs_sorted) | |
594 | { | |
1276c759 | 595 | const char *sect_name = addr_section_name ((*addrs_sorted)->name); |
82ccf5a5 JK |
596 | |
597 | while (*abfd_addrs_sorted | |
1276c759 JK |
598 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
599 | sect_name) < 0) | |
82ccf5a5 JK |
600 | abfd_addrs_sorted++; |
601 | ||
602 | if (*abfd_addrs_sorted | |
1276c759 JK |
603 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
604 | sect_name) == 0) | |
82ccf5a5 JK |
605 | { |
606 | int index_in_addrs; | |
607 | ||
608 | /* Make the found item directly addressable from ADDRS. */ | |
609 | index_in_addrs = *addrs_sorted - addrs->other; | |
610 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); | |
611 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_addrs_sorted; | |
612 | ||
613 | /* Never use the same ABFD entry twice. */ | |
614 | abfd_addrs_sorted++; | |
615 | } | |
616 | ||
617 | addrs_sorted++; | |
618 | } | |
619 | ||
75242ef4 JK |
620 | /* Calculate offsets for the loadable sections. |
621 | FIXME! Sections must be in order of increasing loadable section | |
622 | so that contiguous sections can use the lower-offset!!! | |
623 | ||
624 | Adjust offsets if the segments are not contiguous. | |
625 | If the section is contiguous, its offset should be set to | |
626 | the offset of the highest loadable section lower than it | |
627 | (the loadable section directly below it in memory). | |
628 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
629 | ||
d76488d8 | 630 | for (i = 0; i < addrs->num_sections; i++) |
75242ef4 | 631 | { |
82ccf5a5 | 632 | struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
633 | |
634 | if (sect) | |
75242ef4 | 635 | { |
c378eb4e | 636 | /* This is the index used by BFD. */ |
82ccf5a5 | 637 | addrs->other[i].sectindex = sect->sectindex; |
672d9c23 JK |
638 | |
639 | if (addrs->other[i].addr != 0) | |
75242ef4 | 640 | { |
82ccf5a5 | 641 | addrs->other[i].addr -= sect->addr; |
75242ef4 | 642 | lower_offset = addrs->other[i].addr; |
75242ef4 JK |
643 | } |
644 | else | |
672d9c23 | 645 | addrs->other[i].addr = lower_offset; |
75242ef4 JK |
646 | } |
647 | else | |
672d9c23 | 648 | { |
1276c759 JK |
649 | /* addr_section_name transformation is not used for SECT_NAME. */ |
650 | const char *sect_name = addrs->other[i].name; | |
651 | ||
b0fcb67f JK |
652 | /* This section does not exist in ABFD, which is normally |
653 | unexpected and we want to issue a warning. | |
654 | ||
4d9743af JK |
655 | However, the ELF prelinker does create a few sections which are |
656 | marked in the main executable as loadable (they are loaded in | |
657 | memory from the DYNAMIC segment) and yet are not present in | |
658 | separate debug info files. This is fine, and should not cause | |
659 | a warning. Shared libraries contain just the section | |
660 | ".gnu.liblist" but it is not marked as loadable there. There is | |
661 | no other way to identify them than by their name as the sections | |
1276c759 JK |
662 | created by prelink have no special flags. |
663 | ||
664 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f JK |
665 | |
666 | if (!(strcmp (sect_name, ".gnu.liblist") == 0 | |
4d9743af | 667 | || strcmp (sect_name, ".gnu.conflict") == 0 |
1276c759 JK |
668 | || (strcmp (sect_name, ".bss") == 0 |
669 | && i > 0 | |
670 | && strcmp (addrs->other[i - 1].name, ".dynbss") == 0 | |
671 | && addrs_to_abfd_addrs[i - 1] != NULL) | |
672 | || (strcmp (sect_name, ".sbss") == 0 | |
673 | && i > 0 | |
674 | && strcmp (addrs->other[i - 1].name, ".sdynbss") == 0 | |
675 | && addrs_to_abfd_addrs[i - 1] != NULL))) | |
b0fcb67f JK |
676 | warning (_("section %s not found in %s"), sect_name, |
677 | bfd_get_filename (abfd)); | |
678 | ||
672d9c23 | 679 | addrs->other[i].addr = 0; |
5488dafb | 680 | addrs->other[i].sectindex = -1; |
672d9c23 | 681 | } |
75242ef4 | 682 | } |
82ccf5a5 JK |
683 | |
684 | do_cleanups (my_cleanup); | |
75242ef4 JK |
685 | } |
686 | ||
687 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
688 | of how to represent it for fast symbol reading. This is the default | |
689 | version of the sym_fns.sym_offsets function for symbol readers that | |
690 | don't need to do anything special. It allocates a section_offsets table | |
691 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
692 | ||
693 | void | |
694 | default_symfile_offsets (struct objfile *objfile, | |
3189cb12 | 695 | const struct section_addr_info *addrs) |
75242ef4 | 696 | { |
d445b2f6 | 697 | objfile->num_sections = gdb_bfd_count_sections (objfile->obfd); |
75242ef4 JK |
698 | objfile->section_offsets = (struct section_offsets *) |
699 | obstack_alloc (&objfile->objfile_obstack, | |
700 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
701 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
702 | objfile->num_sections, addrs); | |
e8289572 | 703 | |
c1bd25fd DJ |
704 | /* For relocatable files, all loadable sections will start at zero. |
705 | The zero is meaningless, so try to pick arbitrary addresses such | |
706 | that no loadable sections overlap. This algorithm is quadratic, | |
707 | but the number of sections in a single object file is generally | |
708 | small. */ | |
709 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
710 | { | |
711 | struct place_section_arg arg; | |
2711e456 DJ |
712 | bfd *abfd = objfile->obfd; |
713 | asection *cur_sec; | |
2711e456 DJ |
714 | |
715 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
716 | /* We do not expect this to happen; just skip this step if the | |
717 | relocatable file has a section with an assigned VMA. */ | |
718 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
719 | break; | |
720 | ||
721 | if (cur_sec == NULL) | |
722 | { | |
723 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
724 | ||
725 | /* Pick non-overlapping offsets for sections the user did not | |
726 | place explicitly. */ | |
727 | arg.offsets = objfile->section_offsets; | |
728 | arg.lowest = 0; | |
729 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
730 | ||
731 | /* Correctly filling in the section offsets is not quite | |
732 | enough. Relocatable files have two properties that | |
733 | (most) shared objects do not: | |
734 | ||
735 | - Their debug information will contain relocations. Some | |
736 | shared libraries do also, but many do not, so this can not | |
737 | be assumed. | |
738 | ||
739 | - If there are multiple code sections they will be loaded | |
740 | at different relative addresses in memory than they are | |
741 | in the objfile, since all sections in the file will start | |
742 | at address zero. | |
743 | ||
744 | Because GDB has very limited ability to map from an | |
745 | address in debug info to the correct code section, | |
746 | it relies on adding SECT_OFF_TEXT to things which might be | |
747 | code. If we clear all the section offsets, and set the | |
748 | section VMAs instead, then symfile_relocate_debug_section | |
749 | will return meaningful debug information pointing at the | |
750 | correct sections. | |
751 | ||
752 | GDB has too many different data structures for section | |
753 | addresses - a bfd, objfile, and so_list all have section | |
754 | tables, as does exec_ops. Some of these could probably | |
755 | be eliminated. */ | |
756 | ||
757 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
758 | cur_sec = cur_sec->next) | |
759 | { | |
760 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
761 | continue; | |
762 | ||
763 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
764 | exec_set_section_address (bfd_get_filename (abfd), |
765 | cur_sec->index, | |
30510692 | 766 | offsets[cur_sec->index]); |
2711e456 DJ |
767 | offsets[cur_sec->index] = 0; |
768 | } | |
769 | } | |
c1bd25fd DJ |
770 | } |
771 | ||
e8289572 | 772 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 773 | .rodata sections. */ |
e8289572 JB |
774 | init_objfile_sect_indices (objfile); |
775 | } | |
776 | ||
31d99776 DJ |
777 | /* Divide the file into segments, which are individual relocatable units. |
778 | This is the default version of the sym_fns.sym_segments function for | |
779 | symbol readers that do not have an explicit representation of segments. | |
780 | It assumes that object files do not have segments, and fully linked | |
781 | files have a single segment. */ | |
782 | ||
783 | struct symfile_segment_data * | |
784 | default_symfile_segments (bfd *abfd) | |
785 | { | |
786 | int num_sections, i; | |
787 | asection *sect; | |
788 | struct symfile_segment_data *data; | |
789 | CORE_ADDR low, high; | |
790 | ||
791 | /* Relocatable files contain enough information to position each | |
792 | loadable section independently; they should not be relocated | |
793 | in segments. */ | |
794 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
795 | return NULL; | |
796 | ||
797 | /* Make sure there is at least one loadable section in the file. */ | |
798 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
799 | { | |
800 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
801 | continue; | |
802 | ||
803 | break; | |
804 | } | |
805 | if (sect == NULL) | |
806 | return NULL; | |
807 | ||
808 | low = bfd_get_section_vma (abfd, sect); | |
809 | high = low + bfd_get_section_size (sect); | |
810 | ||
41bf6aca | 811 | data = XCNEW (struct symfile_segment_data); |
31d99776 | 812 | data->num_segments = 1; |
fc270c35 TT |
813 | data->segment_bases = XCNEW (CORE_ADDR); |
814 | data->segment_sizes = XCNEW (CORE_ADDR); | |
31d99776 DJ |
815 | |
816 | num_sections = bfd_count_sections (abfd); | |
fc270c35 | 817 | data->segment_info = XCNEWVEC (int, num_sections); |
31d99776 DJ |
818 | |
819 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
820 | { | |
821 | CORE_ADDR vma; | |
822 | ||
823 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
824 | continue; | |
825 | ||
826 | vma = bfd_get_section_vma (abfd, sect); | |
827 | if (vma < low) | |
828 | low = vma; | |
829 | if (vma + bfd_get_section_size (sect) > high) | |
830 | high = vma + bfd_get_section_size (sect); | |
831 | ||
832 | data->segment_info[i] = 1; | |
833 | } | |
834 | ||
835 | data->segment_bases[0] = low; | |
836 | data->segment_sizes[0] = high - low; | |
837 | ||
838 | return data; | |
839 | } | |
840 | ||
608e2dbb TT |
841 | /* This is a convenience function to call sym_read for OBJFILE and |
842 | possibly force the partial symbols to be read. */ | |
843 | ||
844 | static void | |
b15cc25c | 845 | read_symbols (struct objfile *objfile, symfile_add_flags add_flags) |
608e2dbb TT |
846 | { |
847 | (*objfile->sf->sym_read) (objfile, add_flags); | |
23732b1e | 848 | objfile->per_bfd->minsyms_read = true; |
8a92335b JK |
849 | |
850 | /* find_separate_debug_file_in_section should be called only if there is | |
851 | single binary with no existing separate debug info file. */ | |
852 | if (!objfile_has_partial_symbols (objfile) | |
853 | && objfile->separate_debug_objfile == NULL | |
854 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb | 855 | { |
192b62ce | 856 | gdb_bfd_ref_ptr abfd (find_separate_debug_file_in_section (objfile)); |
608e2dbb TT |
857 | |
858 | if (abfd != NULL) | |
24ba069a JK |
859 | { |
860 | /* find_separate_debug_file_in_section uses the same filename for the | |
861 | virtual section-as-bfd like the bfd filename containing the | |
862 | section. Therefore use also non-canonical name form for the same | |
863 | file containing the section. */ | |
192b62ce TT |
864 | symbol_file_add_separate (abfd.get (), objfile->original_name, |
865 | add_flags, objfile); | |
24ba069a | 866 | } |
608e2dbb TT |
867 | } |
868 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
869 | require_partial_symbols (objfile, 0); | |
870 | } | |
871 | ||
3d6e24f0 JB |
872 | /* Initialize entry point information for this objfile. */ |
873 | ||
874 | static void | |
875 | init_entry_point_info (struct objfile *objfile) | |
876 | { | |
6ef55de7 TT |
877 | struct entry_info *ei = &objfile->per_bfd->ei; |
878 | ||
879 | if (ei->initialized) | |
880 | return; | |
881 | ei->initialized = 1; | |
882 | ||
3d6e24f0 JB |
883 | /* Save startup file's range of PC addresses to help blockframe.c |
884 | decide where the bottom of the stack is. */ | |
885 | ||
886 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
887 | { | |
888 | /* Executable file -- record its entry point so we'll recognize | |
889 | the startup file because it contains the entry point. */ | |
6ef55de7 TT |
890 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
891 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
892 | } |
893 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
894 | && bfd_get_start_address (objfile->obfd) != 0) | |
895 | { | |
896 | /* Some shared libraries may have entry points set and be | |
897 | runnable. There's no clear way to indicate this, so just check | |
898 | for values other than zero. */ | |
6ef55de7 TT |
899 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
900 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
901 | } |
902 | else | |
903 | { | |
904 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
6ef55de7 | 905 | ei->entry_point_p = 0; |
3d6e24f0 JB |
906 | } |
907 | ||
6ef55de7 | 908 | if (ei->entry_point_p) |
3d6e24f0 | 909 | { |
53eddfa6 | 910 | struct obj_section *osect; |
6ef55de7 | 911 | CORE_ADDR entry_point = ei->entry_point; |
53eddfa6 | 912 | int found; |
3d6e24f0 JB |
913 | |
914 | /* Make certain that the address points at real code, and not a | |
915 | function descriptor. */ | |
916 | entry_point | |
df6d5441 | 917 | = gdbarch_convert_from_func_ptr_addr (get_objfile_arch (objfile), |
3d6e24f0 JB |
918 | entry_point, |
919 | ¤t_target); | |
920 | ||
921 | /* Remove any ISA markers, so that this matches entries in the | |
922 | symbol table. */ | |
6ef55de7 | 923 | ei->entry_point |
df6d5441 | 924 | = gdbarch_addr_bits_remove (get_objfile_arch (objfile), entry_point); |
53eddfa6 TT |
925 | |
926 | found = 0; | |
927 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
928 | { | |
929 | struct bfd_section *sect = osect->the_bfd_section; | |
930 | ||
931 | if (entry_point >= bfd_get_section_vma (objfile->obfd, sect) | |
932 | && entry_point < (bfd_get_section_vma (objfile->obfd, sect) | |
933 | + bfd_get_section_size (sect))) | |
934 | { | |
6ef55de7 | 935 | ei->the_bfd_section_index |
53eddfa6 TT |
936 | = gdb_bfd_section_index (objfile->obfd, sect); |
937 | found = 1; | |
938 | break; | |
939 | } | |
940 | } | |
941 | ||
942 | if (!found) | |
6ef55de7 | 943 | ei->the_bfd_section_index = SECT_OFF_TEXT (objfile); |
3d6e24f0 JB |
944 | } |
945 | } | |
946 | ||
c906108c SS |
947 | /* Process a symbol file, as either the main file or as a dynamically |
948 | loaded file. | |
949 | ||
36e4d068 JB |
950 | This function does not set the OBJFILE's entry-point info. |
951 | ||
96baa820 JM |
952 | OBJFILE is where the symbols are to be read from. |
953 | ||
7e8580c1 JB |
954 | ADDRS is the list of section load addresses. If the user has given |
955 | an 'add-symbol-file' command, then this is the list of offsets and | |
956 | addresses he or she provided as arguments to the command; or, if | |
957 | we're handling a shared library, these are the actual addresses the | |
958 | sections are loaded at, according to the inferior's dynamic linker | |
959 | (as gleaned by GDB's shared library code). We convert each address | |
960 | into an offset from the section VMA's as it appears in the object | |
961 | file, and then call the file's sym_offsets function to convert this | |
962 | into a format-specific offset table --- a `struct section_offsets'. | |
96baa820 | 963 | |
7eedccfa PP |
964 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
965 | an extra symbol file such as dynamically loaded code, and wether | |
966 | breakpoint reset should be deferred. */ | |
c906108c | 967 | |
36e4d068 JB |
968 | static void |
969 | syms_from_objfile_1 (struct objfile *objfile, | |
970 | struct section_addr_info *addrs, | |
b15cc25c | 971 | symfile_add_flags add_flags) |
c906108c | 972 | { |
a39a16c4 | 973 | struct section_addr_info *local_addr = NULL; |
c906108c | 974 | struct cleanup *old_chain; |
7eedccfa | 975 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 976 | |
8fb8eb5c | 977 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
c906108c | 978 | |
75245b24 | 979 | if (objfile->sf == NULL) |
36e4d068 JB |
980 | { |
981 | /* No symbols to load, but we still need to make sure | |
982 | that the section_offsets table is allocated. */ | |
d445b2f6 | 983 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
a7bfba49 | 984 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_sections); |
36e4d068 JB |
985 | |
986 | objfile->num_sections = num_sections; | |
987 | objfile->section_offsets | |
224c3ddb SM |
988 | = (struct section_offsets *) obstack_alloc (&objfile->objfile_obstack, |
989 | size); | |
36e4d068 JB |
990 | memset (objfile->section_offsets, 0, size); |
991 | return; | |
992 | } | |
75245b24 | 993 | |
c906108c SS |
994 | /* Make sure that partially constructed symbol tables will be cleaned up |
995 | if an error occurs during symbol reading. */ | |
ed2b3126 TT |
996 | old_chain = make_cleanup (null_cleanup, NULL); |
997 | std::unique_ptr<struct objfile> objfile_holder (objfile); | |
c906108c | 998 | |
6bf667bb DE |
999 | /* If ADDRS is NULL, put together a dummy address list. |
1000 | We now establish the convention that an addr of zero means | |
c378eb4e | 1001 | no load address was specified. */ |
6bf667bb | 1002 | if (! addrs) |
a39a16c4 | 1003 | { |
d445b2f6 | 1004 | local_addr = alloc_section_addr_info (1); |
a39a16c4 MM |
1005 | make_cleanup (xfree, local_addr); |
1006 | addrs = local_addr; | |
1007 | } | |
1008 | ||
c5aa993b | 1009 | if (mainline) |
c906108c SS |
1010 | { |
1011 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 1012 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 1013 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
1014 | |
1015 | /* Since no error yet, throw away the old symbol table. */ | |
1016 | ||
1017 | if (symfile_objfile != NULL) | |
1018 | { | |
9e86da07 | 1019 | delete symfile_objfile; |
adb7f338 | 1020 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
1021 | } |
1022 | ||
1023 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
1024 | If the user wants to get rid of them, they should do "symbol-file" |
1025 | without arguments first. Not sure this is the best behavior | |
1026 | (PR 2207). */ | |
c906108c | 1027 | |
c5aa993b | 1028 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
1029 | } |
1030 | ||
1031 | /* Convert addr into an offset rather than an absolute address. | |
1032 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 1033 | and assume that <addr> is where that got loaded. |
c906108c | 1034 | |
53a5351d JM |
1035 | We no longer warn if the lowest section is not a text segment (as |
1036 | happens for the PA64 port. */ | |
6bf667bb | 1037 | if (addrs->num_sections > 0) |
75242ef4 | 1038 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
1039 | |
1040 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
1041 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 1042 | initial symbol reading for this file. */ |
c906108c | 1043 | |
c5aa993b | 1044 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 1045 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 1046 | |
6bf667bb | 1047 | (*objfile->sf->sym_offsets) (objfile, addrs); |
c906108c | 1048 | |
608e2dbb | 1049 | read_symbols (objfile, add_flags); |
b11896a5 | 1050 | |
c906108c SS |
1051 | /* Discard cleanups as symbol reading was successful. */ |
1052 | ||
ed2b3126 | 1053 | objfile_holder.release (); |
c906108c | 1054 | discard_cleanups (old_chain); |
f7545552 | 1055 | xfree (local_addr); |
c906108c SS |
1056 | } |
1057 | ||
36e4d068 JB |
1058 | /* Same as syms_from_objfile_1, but also initializes the objfile |
1059 | entry-point info. */ | |
1060 | ||
6bf667bb | 1061 | static void |
36e4d068 JB |
1062 | syms_from_objfile (struct objfile *objfile, |
1063 | struct section_addr_info *addrs, | |
b15cc25c | 1064 | symfile_add_flags add_flags) |
36e4d068 | 1065 | { |
6bf667bb | 1066 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
1067 | init_entry_point_info (objfile); |
1068 | } | |
1069 | ||
c906108c SS |
1070 | /* Perform required actions after either reading in the initial |
1071 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1072 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1073 | |
e7d52ed3 | 1074 | static void |
b15cc25c | 1075 | finish_new_objfile (struct objfile *objfile, symfile_add_flags add_flags) |
c906108c | 1076 | { |
c906108c | 1077 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1078 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1079 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1080 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1081 | { |
1082 | /* OK, make it the "real" symbol file. */ | |
1083 | symfile_objfile = objfile; | |
1084 | ||
c1e56572 | 1085 | clear_symtab_users (add_flags); |
c906108c | 1086 | } |
7eedccfa | 1087 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1088 | { |
69de3c6a | 1089 | breakpoint_re_set (); |
c906108c SS |
1090 | } |
1091 | ||
1092 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 1093 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
1094 | } |
1095 | ||
1096 | /* Process a symbol file, as either the main file or as a dynamically | |
1097 | loaded file. | |
1098 | ||
5417f6dc | 1099 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1100 | A new reference is acquired by this function. |
7904e09f | 1101 | |
9e86da07 | 1102 | For NAME description see the objfile constructor. |
24ba069a | 1103 | |
7eedccfa PP |
1104 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1105 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f | 1106 | |
6bf667bb | 1107 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1108 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1109 | |
63524580 JK |
1110 | PARENT is the original objfile if ABFD is a separate debug info file. |
1111 | Otherwise PARENT is NULL. | |
1112 | ||
c906108c | 1113 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1114 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1115 | |
7904e09f | 1116 | static struct objfile * |
b15cc25c PA |
1117 | symbol_file_add_with_addrs (bfd *abfd, const char *name, |
1118 | symfile_add_flags add_flags, | |
6bf667bb | 1119 | struct section_addr_info *addrs, |
b15cc25c | 1120 | objfile_flags flags, struct objfile *parent) |
c906108c SS |
1121 | { |
1122 | struct objfile *objfile; | |
7eedccfa | 1123 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1124 | const int mainline = add_flags & SYMFILE_MAINLINE; |
770e7fc7 | 1125 | const int should_print = (print_symbol_loading_p (from_tty, mainline, 1) |
b11896a5 TT |
1126 | && (readnow_symbol_files |
1127 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1128 | |
9291a0cd | 1129 | if (readnow_symbol_files) |
b11896a5 TT |
1130 | { |
1131 | flags |= OBJF_READNOW; | |
1132 | add_flags &= ~SYMFILE_NO_READ; | |
1133 | } | |
9291a0cd | 1134 | |
5417f6dc RM |
1135 | /* Give user a chance to burp if we'd be |
1136 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1137 | |
1138 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1139 | && mainline |
c906108c | 1140 | && from_tty |
9e2f0ad4 | 1141 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1142 | error (_("Not confirmed.")); |
c906108c | 1143 | |
b15cc25c PA |
1144 | if (mainline) |
1145 | flags |= OBJF_MAINLINE; | |
9e86da07 | 1146 | objfile = new struct objfile (abfd, name, flags); |
c906108c | 1147 | |
63524580 JK |
1148 | if (parent) |
1149 | add_separate_debug_objfile (objfile, parent); | |
1150 | ||
78a4a9b9 AC |
1151 | /* We either created a new mapped symbol table, mapped an existing |
1152 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1153 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1154 | if (should_print) |
c906108c | 1155 | { |
769d7dc4 AC |
1156 | if (deprecated_pre_add_symbol_hook) |
1157 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1158 | else |
c906108c | 1159 | { |
55333a84 DE |
1160 | printf_unfiltered (_("Reading symbols from %s..."), name); |
1161 | wrap_here (""); | |
1162 | gdb_flush (gdb_stdout); | |
c906108c | 1163 | } |
c906108c | 1164 | } |
6bf667bb | 1165 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1166 | |
1167 | /* We now have at least a partial symbol table. Check to see if the | |
1168 | user requested that all symbols be read on initial access via either | |
1169 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1170 | all partial symbol tables for this objfile if so. */ |
c906108c | 1171 | |
9291a0cd | 1172 | if ((flags & OBJF_READNOW)) |
c906108c | 1173 | { |
b11896a5 | 1174 | if (should_print) |
c906108c | 1175 | { |
a3f17187 | 1176 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1177 | wrap_here (""); |
1178 | gdb_flush (gdb_stdout); | |
1179 | } | |
1180 | ||
ccefe4c4 TT |
1181 | if (objfile->sf) |
1182 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1183 | } |
1184 | ||
b11896a5 | 1185 | if (should_print && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1186 | { |
1187 | wrap_here (""); | |
55333a84 | 1188 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1189 | wrap_here (""); |
1190 | } | |
1191 | ||
b11896a5 | 1192 | if (should_print) |
c906108c | 1193 | { |
769d7dc4 AC |
1194 | if (deprecated_post_add_symbol_hook) |
1195 | deprecated_post_add_symbol_hook (); | |
c906108c | 1196 | else |
55333a84 | 1197 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1198 | } |
1199 | ||
481d0f41 JB |
1200 | /* We print some messages regardless of whether 'from_tty || |
1201 | info_verbose' is true, so make sure they go out at the right | |
1202 | time. */ | |
1203 | gdb_flush (gdb_stdout); | |
1204 | ||
109f874e | 1205 | if (objfile->sf == NULL) |
8caee43b PP |
1206 | { |
1207 | observer_notify_new_objfile (objfile); | |
c378eb4e | 1208 | return objfile; /* No symbols. */ |
8caee43b | 1209 | } |
109f874e | 1210 | |
e7d52ed3 | 1211 | finish_new_objfile (objfile, add_flags); |
c906108c | 1212 | |
06d3b283 | 1213 | observer_notify_new_objfile (objfile); |
c906108c | 1214 | |
ce7d4522 | 1215 | bfd_cache_close_all (); |
c906108c SS |
1216 | return (objfile); |
1217 | } | |
1218 | ||
24ba069a | 1219 | /* Add BFD as a separate debug file for OBJFILE. For NAME description |
9e86da07 | 1220 | see the objfile constructor. */ |
9cce227f TG |
1221 | |
1222 | void | |
b15cc25c PA |
1223 | symbol_file_add_separate (bfd *bfd, const char *name, |
1224 | symfile_add_flags symfile_flags, | |
24ba069a | 1225 | struct objfile *objfile) |
9cce227f | 1226 | { |
089b4803 TG |
1227 | struct section_addr_info *sap; |
1228 | struct cleanup *my_cleanup; | |
1229 | ||
1230 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1231 | because sections of BFD may not match sections of OBJFILE and because | |
1232 | vma may have been modified by tools such as prelink. */ | |
1233 | sap = build_section_addr_info_from_objfile (objfile); | |
1234 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1235 | |
870f88f7 | 1236 | symbol_file_add_with_addrs |
24ba069a | 1237 | (bfd, name, symfile_flags, sap, |
9cce227f | 1238 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1239 | | OBJF_USERLOADED), |
1240 | objfile); | |
089b4803 TG |
1241 | |
1242 | do_cleanups (my_cleanup); | |
9cce227f | 1243 | } |
7904e09f | 1244 | |
eb4556d7 JB |
1245 | /* Process the symbol file ABFD, as either the main file or as a |
1246 | dynamically loaded file. | |
6bf667bb | 1247 | See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1248 | |
eb4556d7 | 1249 | struct objfile * |
b15cc25c PA |
1250 | symbol_file_add_from_bfd (bfd *abfd, const char *name, |
1251 | symfile_add_flags add_flags, | |
eb4556d7 | 1252 | struct section_addr_info *addrs, |
b15cc25c | 1253 | objfile_flags flags, struct objfile *parent) |
eb4556d7 | 1254 | { |
24ba069a JK |
1255 | return symbol_file_add_with_addrs (abfd, name, add_flags, addrs, flags, |
1256 | parent); | |
eb4556d7 JB |
1257 | } |
1258 | ||
7904e09f | 1259 | /* Process a symbol file, as either the main file or as a dynamically |
6bf667bb | 1260 | loaded file. See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1261 | |
7904e09f | 1262 | struct objfile * |
b15cc25c PA |
1263 | symbol_file_add (const char *name, symfile_add_flags add_flags, |
1264 | struct section_addr_info *addrs, objfile_flags flags) | |
7904e09f | 1265 | { |
192b62ce | 1266 | gdb_bfd_ref_ptr bfd (symfile_bfd_open (name)); |
8ac244b4 | 1267 | |
192b62ce TT |
1268 | return symbol_file_add_from_bfd (bfd.get (), name, add_flags, addrs, |
1269 | flags, NULL); | |
7904e09f JB |
1270 | } |
1271 | ||
d7db6da9 FN |
1272 | /* Call symbol_file_add() with default values and update whatever is |
1273 | affected by the loading of a new main(). | |
1274 | Used when the file is supplied in the gdb command line | |
1275 | and by some targets with special loading requirements. | |
1276 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1277 | argument for the switches that can only be specified in the symbol_file | |
1278 | command itself. */ | |
5417f6dc | 1279 | |
1adeb98a | 1280 | void |
ecf45d2c | 1281 | symbol_file_add_main (const char *args, symfile_add_flags add_flags) |
1adeb98a | 1282 | { |
ecf45d2c | 1283 | symbol_file_add_main_1 (args, add_flags, 0); |
d7db6da9 FN |
1284 | } |
1285 | ||
1286 | static void | |
ecf45d2c SL |
1287 | symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
1288 | objfile_flags flags) | |
d7db6da9 | 1289 | { |
ecf45d2c | 1290 | add_flags |= current_inferior ()->symfile_flags | SYMFILE_MAINLINE; |
7dcd53a0 | 1291 | |
7eedccfa | 1292 | symbol_file_add (args, add_flags, NULL, flags); |
d7db6da9 | 1293 | |
d7db6da9 FN |
1294 | /* Getting new symbols may change our opinion about |
1295 | what is frameless. */ | |
1296 | reinit_frame_cache (); | |
1297 | ||
b15cc25c | 1298 | if ((add_flags & SYMFILE_NO_READ) == 0) |
7dcd53a0 | 1299 | set_initial_language (); |
1adeb98a FN |
1300 | } |
1301 | ||
1302 | void | |
1303 | symbol_file_clear (int from_tty) | |
1304 | { | |
1305 | if ((have_full_symbols () || have_partial_symbols ()) | |
1306 | && from_tty | |
0430b0d6 AS |
1307 | && (symfile_objfile |
1308 | ? !query (_("Discard symbol table from `%s'? "), | |
4262abfb | 1309 | objfile_name (symfile_objfile)) |
0430b0d6 | 1310 | : !query (_("Discard symbol table? ")))) |
8a3fe4f8 | 1311 | error (_("Not confirmed.")); |
1adeb98a | 1312 | |
0133421a JK |
1313 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1314 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1315 | no_shared_libraries (NULL, from_tty); |
1316 | ||
0133421a JK |
1317 | free_all_objfiles (); |
1318 | ||
adb7f338 | 1319 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1320 | if (from_tty) |
1321 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1322 | } |
1323 | ||
c4dcb155 SM |
1324 | /* See symfile.h. */ |
1325 | ||
1326 | int separate_debug_file_debug = 0; | |
1327 | ||
5b5d99cf | 1328 | static int |
287ccc17 | 1329 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1330 | struct objfile *parent_objfile) |
5b5d99cf | 1331 | { |
904578ed JK |
1332 | unsigned long file_crc; |
1333 | int file_crc_p; | |
32a0e547 | 1334 | struct stat parent_stat, abfd_stat; |
904578ed | 1335 | int verified_as_different; |
32a0e547 JK |
1336 | |
1337 | /* Find a separate debug info file as if symbols would be present in | |
1338 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1339 | section can contain just the basename of PARENT_OBJFILE without any | |
1340 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1341 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1342 | |
4262abfb | 1343 | if (filename_cmp (name, objfile_name (parent_objfile)) == 0) |
32a0e547 | 1344 | return 0; |
5b5d99cf | 1345 | |
c4dcb155 SM |
1346 | if (separate_debug_file_debug) |
1347 | printf_unfiltered (_(" Trying %s\n"), name); | |
1348 | ||
192b62ce | 1349 | gdb_bfd_ref_ptr abfd (gdb_bfd_open (name, gnutarget, -1)); |
f1838a98 | 1350 | |
192b62ce | 1351 | if (abfd == NULL) |
5b5d99cf JB |
1352 | return 0; |
1353 | ||
0ba1096a | 1354 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1355 | |
1356 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1357 | st_ino; they always set it to zero. (Windows does provide a | |
0a93529c GB |
1358 | meaningful st_dev.) Files accessed from gdbservers that do not |
1359 | support the vFile:fstat packet will also have st_ino set to zero. | |
1360 | Do not indicate a duplicate library in either case. While there | |
1361 | is no guarantee that a system that provides meaningful inode | |
1362 | numbers will never set st_ino to zero, this is merely an | |
1363 | optimization, so we do not need to worry about false negatives. */ | |
32a0e547 | 1364 | |
192b62ce | 1365 | if (bfd_stat (abfd.get (), &abfd_stat) == 0 |
904578ed JK |
1366 | && abfd_stat.st_ino != 0 |
1367 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1368 | { |
904578ed JK |
1369 | if (abfd_stat.st_dev == parent_stat.st_dev |
1370 | && abfd_stat.st_ino == parent_stat.st_ino) | |
192b62ce | 1371 | return 0; |
904578ed | 1372 | verified_as_different = 1; |
32a0e547 | 1373 | } |
904578ed JK |
1374 | else |
1375 | verified_as_different = 0; | |
32a0e547 | 1376 | |
192b62ce | 1377 | file_crc_p = gdb_bfd_crc (abfd.get (), &file_crc); |
5b5d99cf | 1378 | |
904578ed JK |
1379 | if (!file_crc_p) |
1380 | return 0; | |
1381 | ||
287ccc17 JK |
1382 | if (crc != file_crc) |
1383 | { | |
dccee2de TT |
1384 | unsigned long parent_crc; |
1385 | ||
0a93529c GB |
1386 | /* If the files could not be verified as different with |
1387 | bfd_stat then we need to calculate the parent's CRC | |
1388 | to verify whether the files are different or not. */ | |
904578ed | 1389 | |
dccee2de | 1390 | if (!verified_as_different) |
904578ed | 1391 | { |
dccee2de | 1392 | if (!gdb_bfd_crc (parent_objfile->obfd, &parent_crc)) |
904578ed JK |
1393 | return 0; |
1394 | } | |
1395 | ||
dccee2de | 1396 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1397 | warning (_("the debug information found in \"%s\"" |
1398 | " does not match \"%s\" (CRC mismatch).\n"), | |
4262abfb | 1399 | name, objfile_name (parent_objfile)); |
904578ed | 1400 | |
287ccc17 JK |
1401 | return 0; |
1402 | } | |
1403 | ||
1404 | return 1; | |
5b5d99cf JB |
1405 | } |
1406 | ||
aa28a74e | 1407 | char *debug_file_directory = NULL; |
920d2a44 AC |
1408 | static void |
1409 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1410 | struct cmd_list_element *c, const char *value) | |
1411 | { | |
3e43a32a MS |
1412 | fprintf_filtered (file, |
1413 | _("The directory where separate debug " | |
1414 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1415 | value); |
1416 | } | |
5b5d99cf JB |
1417 | |
1418 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1419 | #define DEBUG_SUBDIRECTORY ".debug" | |
1420 | #endif | |
1421 | ||
1db33378 PP |
1422 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1423 | where the original file resides (may not be the same as | |
1424 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1425 | looking for. CANON_DIR is the "realpath" form of DIR. |
1426 | DIR must contain a trailing '/'. | |
1427 | Returns the path of the file with separate debug info, of NULL. */ | |
1db33378 PP |
1428 | |
1429 | static char * | |
1430 | find_separate_debug_file (const char *dir, | |
1431 | const char *canon_dir, | |
1432 | const char *debuglink, | |
1433 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1434 | { |
1db33378 PP |
1435 | char *debugdir; |
1436 | char *debugfile; | |
9cce227f | 1437 | int i; |
e4ab2fad JK |
1438 | VEC (char_ptr) *debugdir_vec; |
1439 | struct cleanup *back_to; | |
1440 | int ix; | |
5b5d99cf | 1441 | |
c4dcb155 SM |
1442 | if (separate_debug_file_debug) |
1443 | printf_unfiltered (_("\nLooking for separate debug info (debug link) for " | |
1444 | "%s\n"), objfile_name (objfile)); | |
1445 | ||
325fac50 | 1446 | /* Set I to std::max (strlen (canon_dir), strlen (dir)). */ |
1ffa32ee | 1447 | i = strlen (dir); |
1db33378 PP |
1448 | if (canon_dir != NULL && strlen (canon_dir) > i) |
1449 | i = strlen (canon_dir); | |
1ffa32ee | 1450 | |
224c3ddb SM |
1451 | debugfile |
1452 | = (char *) xmalloc (strlen (debug_file_directory) + 1 | |
1453 | + i | |
1454 | + strlen (DEBUG_SUBDIRECTORY) | |
1455 | + strlen ("/") | |
1456 | + strlen (debuglink) | |
1457 | + 1); | |
5b5d99cf JB |
1458 | |
1459 | /* First try in the same directory as the original file. */ | |
1460 | strcpy (debugfile, dir); | |
1db33378 | 1461 | strcat (debugfile, debuglink); |
5b5d99cf | 1462 | |
32a0e547 | 1463 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1464 | return debugfile; |
5417f6dc | 1465 | |
5b5d99cf JB |
1466 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1467 | strcpy (debugfile, dir); | |
1468 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1469 | strcat (debugfile, "/"); | |
1db33378 | 1470 | strcat (debugfile, debuglink); |
5b5d99cf | 1471 | |
32a0e547 | 1472 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1473 | return debugfile; |
5417f6dc | 1474 | |
24ddea62 | 1475 | /* Then try in the global debugfile directories. |
f888f159 | 1476 | |
24ddea62 JK |
1477 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1478 | cause "/..." lookups. */ | |
5417f6dc | 1479 | |
e4ab2fad JK |
1480 | debugdir_vec = dirnames_to_char_ptr_vec (debug_file_directory); |
1481 | back_to = make_cleanup_free_char_ptr_vec (debugdir_vec); | |
24ddea62 | 1482 | |
e4ab2fad JK |
1483 | for (ix = 0; VEC_iterate (char_ptr, debugdir_vec, ix, debugdir); ++ix) |
1484 | { | |
1485 | strcpy (debugfile, debugdir); | |
aa28a74e | 1486 | strcat (debugfile, "/"); |
24ddea62 | 1487 | strcat (debugfile, dir); |
1db33378 | 1488 | strcat (debugfile, debuglink); |
aa28a74e | 1489 | |
32a0e547 | 1490 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
a991ac28 TT |
1491 | { |
1492 | do_cleanups (back_to); | |
1493 | return debugfile; | |
1494 | } | |
24ddea62 JK |
1495 | |
1496 | /* If the file is in the sysroot, try using its base path in the | |
1497 | global debugfile directory. */ | |
1db33378 PP |
1498 | if (canon_dir != NULL |
1499 | && filename_ncmp (canon_dir, gdb_sysroot, | |
0ba1096a | 1500 | strlen (gdb_sysroot)) == 0 |
1db33378 | 1501 | && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)])) |
24ddea62 | 1502 | { |
e4ab2fad | 1503 | strcpy (debugfile, debugdir); |
1db33378 | 1504 | strcat (debugfile, canon_dir + strlen (gdb_sysroot)); |
24ddea62 | 1505 | strcat (debugfile, "/"); |
1db33378 | 1506 | strcat (debugfile, debuglink); |
24ddea62 | 1507 | |
32a0e547 | 1508 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
a991ac28 TT |
1509 | { |
1510 | do_cleanups (back_to); | |
1511 | return debugfile; | |
1512 | } | |
24ddea62 | 1513 | } |
aa28a74e | 1514 | } |
f888f159 | 1515 | |
e4ab2fad | 1516 | do_cleanups (back_to); |
25522fae | 1517 | xfree (debugfile); |
1db33378 PP |
1518 | return NULL; |
1519 | } | |
1520 | ||
7edbb660 | 1521 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1522 | If there were no directory separators in PATH, PATH will be empty |
1523 | string on return. */ | |
1524 | ||
1525 | static void | |
1526 | terminate_after_last_dir_separator (char *path) | |
1527 | { | |
1528 | int i; | |
1529 | ||
1530 | /* Strip off the final filename part, leaving the directory name, | |
1531 | followed by a slash. The directory can be relative or absolute. */ | |
1532 | for (i = strlen(path) - 1; i >= 0; i--) | |
1533 | if (IS_DIR_SEPARATOR (path[i])) | |
1534 | break; | |
1535 | ||
1536 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1537 | path[i + 1] = '\0'; | |
1538 | } | |
1539 | ||
1540 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
1541 | Returns pathname, or NULL. */ | |
1542 | ||
1543 | char * | |
1544 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1545 | { | |
1db33378 PP |
1546 | char *debugfile; |
1547 | unsigned long crc32; | |
1db33378 | 1548 | |
5eae7aea TT |
1549 | gdb::unique_xmalloc_ptr<char> debuglink |
1550 | (bfd_get_debug_link_info (objfile->obfd, &crc32)); | |
1db33378 PP |
1551 | |
1552 | if (debuglink == NULL) | |
1553 | { | |
1554 | /* There's no separate debug info, hence there's no way we could | |
1555 | load it => no warning. */ | |
1556 | return NULL; | |
1557 | } | |
1558 | ||
5eae7aea TT |
1559 | std::string dir = objfile_name (objfile); |
1560 | terminate_after_last_dir_separator (&dir[0]); | |
1561 | gdb::unique_xmalloc_ptr<char> canon_dir (lrealpath (dir.c_str ())); | |
1db33378 | 1562 | |
5eae7aea TT |
1563 | debugfile = find_separate_debug_file (dir.c_str (), canon_dir.get (), |
1564 | debuglink.get (), crc32, objfile); | |
1db33378 PP |
1565 | |
1566 | if (debugfile == NULL) | |
1567 | { | |
1db33378 PP |
1568 | /* For PR gdb/9538, try again with realpath (if different from the |
1569 | original). */ | |
1570 | ||
1571 | struct stat st_buf; | |
1572 | ||
4262abfb JK |
1573 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1574 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 | 1575 | { |
5eae7aea TT |
1576 | gdb::unique_xmalloc_ptr<char> symlink_dir |
1577 | (lrealpath (objfile_name (objfile))); | |
1db33378 PP |
1578 | if (symlink_dir != NULL) |
1579 | { | |
5eae7aea TT |
1580 | terminate_after_last_dir_separator (symlink_dir.get ()); |
1581 | if (dir != symlink_dir.get ()) | |
1db33378 PP |
1582 | { |
1583 | /* Different directory, so try using it. */ | |
5eae7aea TT |
1584 | debugfile = find_separate_debug_file (symlink_dir.get (), |
1585 | symlink_dir.get (), | |
1586 | debuglink.get (), | |
1db33378 PP |
1587 | crc32, |
1588 | objfile); | |
1589 | } | |
1590 | } | |
1591 | } | |
1db33378 | 1592 | } |
aa28a74e | 1593 | |
25522fae | 1594 | return debugfile; |
5b5d99cf JB |
1595 | } |
1596 | ||
c906108c SS |
1597 | /* This is the symbol-file command. Read the file, analyze its |
1598 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1599 | the command is rather bizarre: |
1600 | ||
1601 | 1. The function buildargv implements various quoting conventions | |
1602 | which are undocumented and have little or nothing in common with | |
1603 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1604 | ||
1605 | 2. Options are used, which are not generally used in GDB (perhaps | |
1606 | "set mapped on", "set readnow on" would be better) | |
1607 | ||
1608 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1609 | conventions (because it is confusing and inconvenient). */ |
1610 | ||
1611 | void | |
1d8b34a7 | 1612 | symbol_file_command (const char *args, int from_tty) |
c906108c | 1613 | { |
c906108c SS |
1614 | dont_repeat (); |
1615 | ||
1616 | if (args == NULL) | |
1617 | { | |
1adeb98a | 1618 | symbol_file_clear (from_tty); |
c906108c SS |
1619 | } |
1620 | else | |
1621 | { | |
b15cc25c | 1622 | objfile_flags flags = OBJF_USERLOADED; |
ecf45d2c | 1623 | symfile_add_flags add_flags = 0; |
cb2f3a29 | 1624 | char *name = NULL; |
40fc416f SDJ |
1625 | bool stop_processing_options = false; |
1626 | int idx; | |
1627 | char *arg; | |
cb2f3a29 | 1628 | |
ecf45d2c SL |
1629 | if (from_tty) |
1630 | add_flags |= SYMFILE_VERBOSE; | |
1631 | ||
773a1edc | 1632 | gdb_argv built_argv (args); |
40fc416f | 1633 | for (arg = built_argv[0], idx = 0; arg != NULL; arg = built_argv[++idx]) |
c906108c | 1634 | { |
40fc416f | 1635 | if (stop_processing_options || *arg != '-') |
7f0f8ac8 | 1636 | { |
40fc416f SDJ |
1637 | if (name == NULL) |
1638 | name = arg; | |
1639 | else | |
1640 | error (_("Unrecognized argument \"%s\""), arg); | |
7f0f8ac8 | 1641 | } |
40fc416f SDJ |
1642 | else if (strcmp (arg, "-readnow") == 0) |
1643 | flags |= OBJF_READNOW; | |
1644 | else if (strcmp (arg, "--") == 0) | |
1645 | stop_processing_options = true; | |
1646 | else | |
1647 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c SS |
1648 | } |
1649 | ||
1650 | if (name == NULL) | |
cb2f3a29 | 1651 | error (_("no symbol file name was specified")); |
40fc416f SDJ |
1652 | |
1653 | symbol_file_add_main_1 (name, add_flags, flags); | |
c906108c SS |
1654 | } |
1655 | } | |
1656 | ||
1657 | /* Set the initial language. | |
1658 | ||
cb2f3a29 MK |
1659 | FIXME: A better solution would be to record the language in the |
1660 | psymtab when reading partial symbols, and then use it (if known) to | |
1661 | set the language. This would be a win for formats that encode the | |
1662 | language in an easily discoverable place, such as DWARF. For | |
1663 | stabs, we can jump through hoops looking for specially named | |
1664 | symbols or try to intuit the language from the specific type of | |
1665 | stabs we find, but we can't do that until later when we read in | |
1666 | full symbols. */ | |
c906108c | 1667 | |
8b60591b | 1668 | void |
fba45db2 | 1669 | set_initial_language (void) |
c906108c | 1670 | { |
9e6c82ad | 1671 | enum language lang = main_language (); |
c906108c | 1672 | |
9e6c82ad | 1673 | if (lang == language_unknown) |
01f8c46d | 1674 | { |
bf6d8a91 | 1675 | char *name = main_name (); |
d12307c1 | 1676 | struct symbol *sym = lookup_symbol (name, NULL, VAR_DOMAIN, NULL).symbol; |
f888f159 | 1677 | |
bf6d8a91 TT |
1678 | if (sym != NULL) |
1679 | lang = SYMBOL_LANGUAGE (sym); | |
01f8c46d | 1680 | } |
cb2f3a29 | 1681 | |
ccefe4c4 TT |
1682 | if (lang == language_unknown) |
1683 | { | |
1684 | /* Make C the default language */ | |
1685 | lang = language_c; | |
c906108c | 1686 | } |
ccefe4c4 TT |
1687 | |
1688 | set_language (lang); | |
1689 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1690 | } |
1691 | ||
cb2f3a29 MK |
1692 | /* Open the file specified by NAME and hand it off to BFD for |
1693 | preliminary analysis. Return a newly initialized bfd *, which | |
1694 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1695 | absolute). In case of trouble, error() is called. */ | |
c906108c | 1696 | |
192b62ce | 1697 | gdb_bfd_ref_ptr |
97a41605 | 1698 | symfile_bfd_open (const char *name) |
c906108c | 1699 | { |
97a41605 GB |
1700 | int desc = -1; |
1701 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
c906108c | 1702 | |
97a41605 | 1703 | if (!is_target_filename (name)) |
f1838a98 | 1704 | { |
ee0c3293 | 1705 | char *absolute_name; |
f1838a98 | 1706 | |
ee0c3293 | 1707 | gdb::unique_xmalloc_ptr<char> expanded_name (tilde_expand (name)); |
c906108c | 1708 | |
97a41605 GB |
1709 | /* Look down path for it, allocate 2nd new malloc'd copy. */ |
1710 | desc = openp (getenv ("PATH"), | |
1711 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
ee0c3293 | 1712 | expanded_name.get (), O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1713 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
97a41605 GB |
1714 | if (desc < 0) |
1715 | { | |
ee0c3293 | 1716 | char *exename = (char *) alloca (strlen (expanded_name.get ()) + 5); |
433759f7 | 1717 | |
ee0c3293 | 1718 | strcat (strcpy (exename, expanded_name.get ()), ".exe"); |
97a41605 GB |
1719 | desc = openp (getenv ("PATH"), |
1720 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
1721 | exename, O_RDONLY | O_BINARY, &absolute_name); | |
1722 | } | |
c906108c | 1723 | #endif |
97a41605 | 1724 | if (desc < 0) |
ee0c3293 | 1725 | perror_with_name (expanded_name.get ()); |
cb2f3a29 | 1726 | |
97a41605 GB |
1727 | make_cleanup (xfree, absolute_name); |
1728 | name = absolute_name; | |
1729 | } | |
c906108c | 1730 | |
192b62ce TT |
1731 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (name, gnutarget, desc)); |
1732 | if (sym_bfd == NULL) | |
faab9922 JK |
1733 | error (_("`%s': can't open to read symbols: %s."), name, |
1734 | bfd_errmsg (bfd_get_error ())); | |
97a41605 | 1735 | |
192b62ce TT |
1736 | if (!gdb_bfd_has_target_filename (sym_bfd.get ())) |
1737 | bfd_set_cacheable (sym_bfd.get (), 1); | |
c906108c | 1738 | |
192b62ce TT |
1739 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
1740 | error (_("`%s': can't read symbols: %s."), name, | |
1741 | bfd_errmsg (bfd_get_error ())); | |
cb2f3a29 | 1742 | |
faab9922 JK |
1743 | do_cleanups (back_to); |
1744 | ||
cb2f3a29 | 1745 | return sym_bfd; |
c906108c SS |
1746 | } |
1747 | ||
cb2f3a29 MK |
1748 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1749 | the section was not found. */ | |
1750 | ||
0e931cf0 | 1751 | int |
a121b7c1 | 1752 | get_section_index (struct objfile *objfile, const char *section_name) |
0e931cf0 JB |
1753 | { |
1754 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1755 | |
0e931cf0 JB |
1756 | if (sect) |
1757 | return sect->index; | |
1758 | else | |
1759 | return -1; | |
1760 | } | |
1761 | ||
c256e171 DE |
1762 | /* Link SF into the global symtab_fns list. |
1763 | FLAVOUR is the file format that SF handles. | |
1764 | Called on startup by the _initialize routine in each object file format | |
1765 | reader, to register information about each format the reader is prepared | |
1766 | to handle. */ | |
c906108c SS |
1767 | |
1768 | void | |
c256e171 | 1769 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1770 | { |
905014d7 | 1771 | symtab_fns.emplace_back (flavour, sf); |
c906108c SS |
1772 | } |
1773 | ||
cb2f3a29 MK |
1774 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1775 | either returns or calls error(). The result is an initialized | |
1776 | struct sym_fns in the objfile structure, that contains cached | |
1777 | information about the symbol file. */ | |
c906108c | 1778 | |
00b5771c | 1779 | static const struct sym_fns * |
31d99776 | 1780 | find_sym_fns (bfd *abfd) |
c906108c | 1781 | { |
31d99776 | 1782 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1783 | |
75245b24 MS |
1784 | if (our_flavour == bfd_target_srec_flavour |
1785 | || our_flavour == bfd_target_ihex_flavour | |
1786 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1787 | return NULL; /* No symbols. */ |
75245b24 | 1788 | |
905014d7 SM |
1789 | for (const registered_sym_fns &rsf : symtab_fns) |
1790 | if (our_flavour == rsf.sym_flavour) | |
1791 | return rsf.sym_fns; | |
cb2f3a29 | 1792 | |
8a3fe4f8 | 1793 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1794 | bfd_get_target (abfd)); |
c906108c SS |
1795 | } |
1796 | \f | |
cb2f3a29 | 1797 | |
c906108c SS |
1798 | /* This function runs the load command of our current target. */ |
1799 | ||
1800 | static void | |
5fed81ff | 1801 | load_command (const char *arg, int from_tty) |
c906108c | 1802 | { |
5b3fca71 TT |
1803 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
1804 | ||
e5cc9f32 JB |
1805 | dont_repeat (); |
1806 | ||
4487aabf PA |
1807 | /* The user might be reloading because the binary has changed. Take |
1808 | this opportunity to check. */ | |
1809 | reopen_exec_file (); | |
1810 | reread_symbols (); | |
1811 | ||
c906108c | 1812 | if (arg == NULL) |
1986bccd | 1813 | { |
5fed81ff | 1814 | const char *parg; |
1986bccd AS |
1815 | int count = 0; |
1816 | ||
1817 | parg = arg = get_exec_file (1); | |
1818 | ||
1819 | /* Count how many \ " ' tab space there are in the name. */ | |
1820 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1821 | { | |
1822 | parg++; | |
1823 | count++; | |
1824 | } | |
1825 | ||
1826 | if (count) | |
1827 | { | |
1828 | /* We need to quote this string so buildargv can pull it apart. */ | |
224c3ddb | 1829 | char *temp = (char *) xmalloc (strlen (arg) + count + 1 ); |
1986bccd | 1830 | char *ptemp = temp; |
5fed81ff | 1831 | const char *prev; |
1986bccd AS |
1832 | |
1833 | make_cleanup (xfree, temp); | |
1834 | ||
1835 | prev = parg = arg; | |
1836 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1837 | { | |
1838 | strncpy (ptemp, prev, parg - prev); | |
1839 | ptemp += parg - prev; | |
1840 | prev = parg++; | |
1841 | *ptemp++ = '\\'; | |
1842 | } | |
1843 | strcpy (ptemp, prev); | |
1844 | ||
1845 | arg = temp; | |
1846 | } | |
1847 | } | |
1848 | ||
c906108c | 1849 | target_load (arg, from_tty); |
2889e661 JB |
1850 | |
1851 | /* After re-loading the executable, we don't really know which | |
1852 | overlays are mapped any more. */ | |
1853 | overlay_cache_invalid = 1; | |
5b3fca71 TT |
1854 | |
1855 | do_cleanups (cleanup); | |
c906108c SS |
1856 | } |
1857 | ||
1858 | /* This version of "load" should be usable for any target. Currently | |
1859 | it is just used for remote targets, not inftarg.c or core files, | |
1860 | on the theory that only in that case is it useful. | |
1861 | ||
1862 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1863 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1864 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1865 | performance compares. */ | |
917317f4 | 1866 | |
917317f4 JM |
1867 | static int validate_download = 0; |
1868 | ||
e4f9b4d5 MS |
1869 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1870 | ||
1871 | static void | |
1872 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1873 | { | |
19ba03f4 | 1874 | bfd_size_type *sum = (bfd_size_type *) data; |
e4f9b4d5 | 1875 | |
2c500098 | 1876 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1877 | } |
1878 | ||
1879 | /* Opaque data for load_section_callback. */ | |
1880 | struct load_section_data { | |
f698ca8e | 1881 | CORE_ADDR load_offset; |
a76d924d DJ |
1882 | struct load_progress_data *progress_data; |
1883 | VEC(memory_write_request_s) *requests; | |
1884 | }; | |
1885 | ||
1886 | /* Opaque data for load_progress. */ | |
1887 | struct load_progress_data { | |
1888 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1889 | unsigned long write_count; |
1890 | unsigned long data_count; | |
1891 | bfd_size_type total_size; | |
a76d924d DJ |
1892 | }; |
1893 | ||
1894 | /* Opaque data for load_progress for a single section. */ | |
1895 | struct load_progress_section_data { | |
1896 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1897 | |
a76d924d | 1898 | /* Per-section data. */ |
cf7a04e8 DJ |
1899 | const char *section_name; |
1900 | ULONGEST section_sent; | |
1901 | ULONGEST section_size; | |
1902 | CORE_ADDR lma; | |
1903 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1904 | }; |
1905 | ||
a76d924d | 1906 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1907 | |
1908 | static void | |
1909 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1910 | { | |
19ba03f4 SM |
1911 | struct load_progress_section_data *args |
1912 | = (struct load_progress_section_data *) untyped_arg; | |
a76d924d DJ |
1913 | struct load_progress_data *totals; |
1914 | ||
1915 | if (args == NULL) | |
1916 | /* Writing padding data. No easy way to get at the cumulative | |
1917 | stats, so just ignore this. */ | |
1918 | return; | |
1919 | ||
1920 | totals = args->cumulative; | |
1921 | ||
1922 | if (bytes == 0 && args->section_sent == 0) | |
1923 | { | |
1924 | /* The write is just starting. Let the user know we've started | |
1925 | this section. */ | |
112e8700 SM |
1926 | current_uiout->message ("Loading section %s, size %s lma %s\n", |
1927 | args->section_name, | |
1928 | hex_string (args->section_size), | |
1929 | paddress (target_gdbarch (), args->lma)); | |
a76d924d DJ |
1930 | return; |
1931 | } | |
cf7a04e8 DJ |
1932 | |
1933 | if (validate_download) | |
1934 | { | |
1935 | /* Broken memories and broken monitors manifest themselves here | |
1936 | when bring new computers to life. This doubles already slow | |
1937 | downloads. */ | |
1938 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1939 | might add a verify_memory() method to the target vector and | |
1940 | then use that. remote.c could implement that method using | |
1941 | the ``qCRC'' packet. */ | |
0efef640 | 1942 | gdb::byte_vector check (bytes); |
cf7a04e8 | 1943 | |
0efef640 | 1944 | if (target_read_memory (args->lma, check.data (), bytes) != 0) |
5af949e3 | 1945 | error (_("Download verify read failed at %s"), |
f5656ead | 1946 | paddress (target_gdbarch (), args->lma)); |
0efef640 | 1947 | if (memcmp (args->buffer, check.data (), bytes) != 0) |
5af949e3 | 1948 | error (_("Download verify compare failed at %s"), |
f5656ead | 1949 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1950 | } |
a76d924d | 1951 | totals->data_count += bytes; |
cf7a04e8 DJ |
1952 | args->lma += bytes; |
1953 | args->buffer += bytes; | |
a76d924d | 1954 | totals->write_count += 1; |
cf7a04e8 | 1955 | args->section_sent += bytes; |
522002f9 | 1956 | if (check_quit_flag () |
cf7a04e8 DJ |
1957 | || (deprecated_ui_load_progress_hook != NULL |
1958 | && deprecated_ui_load_progress_hook (args->section_name, | |
1959 | args->section_sent))) | |
1960 | error (_("Canceled the download")); | |
1961 | ||
1962 | if (deprecated_show_load_progress != NULL) | |
1963 | deprecated_show_load_progress (args->section_name, | |
1964 | args->section_sent, | |
1965 | args->section_size, | |
a76d924d DJ |
1966 | totals->data_count, |
1967 | totals->total_size); | |
cf7a04e8 DJ |
1968 | } |
1969 | ||
e4f9b4d5 MS |
1970 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1971 | ||
1972 | static void | |
1973 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1974 | { | |
a76d924d | 1975 | struct memory_write_request *new_request; |
19ba03f4 | 1976 | struct load_section_data *args = (struct load_section_data *) data; |
a76d924d | 1977 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1978 | bfd_size_type size = bfd_get_section_size (asec); |
1979 | gdb_byte *buffer; | |
cf7a04e8 | 1980 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1981 | |
cf7a04e8 DJ |
1982 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1983 | return; | |
e4f9b4d5 | 1984 | |
cf7a04e8 DJ |
1985 | if (size == 0) |
1986 | return; | |
e4f9b4d5 | 1987 | |
a76d924d DJ |
1988 | new_request = VEC_safe_push (memory_write_request_s, |
1989 | args->requests, NULL); | |
1990 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
8d749320 | 1991 | section_data = XCNEW (struct load_progress_section_data); |
a76d924d | 1992 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; |
3e43a32a MS |
1993 | new_request->end = new_request->begin + size; /* FIXME Should size |
1994 | be in instead? */ | |
224c3ddb | 1995 | new_request->data = (gdb_byte *) xmalloc (size); |
a76d924d | 1996 | new_request->baton = section_data; |
cf7a04e8 | 1997 | |
a76d924d | 1998 | buffer = new_request->data; |
cf7a04e8 | 1999 | |
a76d924d DJ |
2000 | section_data->cumulative = args->progress_data; |
2001 | section_data->section_name = sect_name; | |
2002 | section_data->section_size = size; | |
2003 | section_data->lma = new_request->begin; | |
2004 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
2005 | |
2006 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
2007 | } |
2008 | ||
2009 | /* Clean up an entire memory request vector, including load | |
2010 | data and progress records. */ | |
cf7a04e8 | 2011 | |
a76d924d DJ |
2012 | static void |
2013 | clear_memory_write_data (void *arg) | |
2014 | { | |
19ba03f4 | 2015 | VEC(memory_write_request_s) **vec_p = (VEC(memory_write_request_s) **) arg; |
a76d924d DJ |
2016 | VEC(memory_write_request_s) *vec = *vec_p; |
2017 | int i; | |
2018 | struct memory_write_request *mr; | |
cf7a04e8 | 2019 | |
a76d924d DJ |
2020 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
2021 | { | |
2022 | xfree (mr->data); | |
2023 | xfree (mr->baton); | |
2024 | } | |
2025 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
2026 | } |
2027 | ||
dcb07cfa PA |
2028 | static void print_transfer_performance (struct ui_file *stream, |
2029 | unsigned long data_count, | |
2030 | unsigned long write_count, | |
2031 | std::chrono::steady_clock::duration d); | |
2032 | ||
c906108c | 2033 | void |
9cbe5fff | 2034 | generic_load (const char *args, int from_tty) |
c906108c | 2035 | { |
773a1edc | 2036 | struct cleanup *old_cleanups; |
e4f9b4d5 | 2037 | struct load_section_data cbdata; |
a76d924d | 2038 | struct load_progress_data total_progress; |
79a45e25 | 2039 | struct ui_out *uiout = current_uiout; |
a76d924d | 2040 | |
e4f9b4d5 MS |
2041 | CORE_ADDR entry; |
2042 | ||
a76d924d DJ |
2043 | memset (&cbdata, 0, sizeof (cbdata)); |
2044 | memset (&total_progress, 0, sizeof (total_progress)); | |
2045 | cbdata.progress_data = &total_progress; | |
2046 | ||
773a1edc | 2047 | old_cleanups = make_cleanup (clear_memory_write_data, &cbdata.requests); |
917317f4 | 2048 | |
d1a41061 PP |
2049 | if (args == NULL) |
2050 | error_no_arg (_("file to load")); | |
1986bccd | 2051 | |
773a1edc | 2052 | gdb_argv argv (args); |
1986bccd | 2053 | |
ee0c3293 | 2054 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
1986bccd AS |
2055 | |
2056 | if (argv[1] != NULL) | |
917317f4 | 2057 | { |
f698ca8e | 2058 | const char *endptr; |
ba5f2f8a | 2059 | |
f698ca8e | 2060 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2061 | |
2062 | /* If the last word was not a valid number then | |
2063 | treat it as a file name with spaces in. */ | |
2064 | if (argv[1] == endptr) | |
2065 | error (_("Invalid download offset:%s."), argv[1]); | |
2066 | ||
2067 | if (argv[2] != NULL) | |
2068 | error (_("Too many parameters.")); | |
917317f4 | 2069 | } |
c906108c | 2070 | |
c378eb4e | 2071 | /* Open the file for loading. */ |
ee0c3293 | 2072 | gdb_bfd_ref_ptr loadfile_bfd (gdb_bfd_open (filename.get (), gnutarget, -1)); |
c906108c | 2073 | if (loadfile_bfd == NULL) |
ee0c3293 | 2074 | perror_with_name (filename.get ()); |
917317f4 | 2075 | |
192b62ce | 2076 | if (!bfd_check_format (loadfile_bfd.get (), bfd_object)) |
c906108c | 2077 | { |
ee0c3293 | 2078 | error (_("\"%s\" is not an object file: %s"), filename.get (), |
c906108c SS |
2079 | bfd_errmsg (bfd_get_error ())); |
2080 | } | |
c5aa993b | 2081 | |
192b62ce | 2082 | bfd_map_over_sections (loadfile_bfd.get (), add_section_size_callback, |
a76d924d DJ |
2083 | (void *) &total_progress.total_size); |
2084 | ||
192b62ce | 2085 | bfd_map_over_sections (loadfile_bfd.get (), load_section_callback, &cbdata); |
c2d11a7d | 2086 | |
dcb07cfa PA |
2087 | using namespace std::chrono; |
2088 | ||
2089 | steady_clock::time_point start_time = steady_clock::now (); | |
c906108c | 2090 | |
a76d924d DJ |
2091 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2092 | load_progress) != 0) | |
2093 | error (_("Load failed")); | |
c906108c | 2094 | |
dcb07cfa | 2095 | steady_clock::time_point end_time = steady_clock::now (); |
ba5f2f8a | 2096 | |
192b62ce | 2097 | entry = bfd_get_start_address (loadfile_bfd.get ()); |
8c2b9656 | 2098 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
112e8700 SM |
2099 | uiout->text ("Start address "); |
2100 | uiout->field_fmt ("address", "%s", paddress (target_gdbarch (), entry)); | |
2101 | uiout->text (", load size "); | |
2102 | uiout->field_fmt ("load-size", "%lu", total_progress.data_count); | |
2103 | uiout->text ("\n"); | |
fb14de7b | 2104 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2105 | |
38963c97 DJ |
2106 | /* Reset breakpoints, now that we have changed the load image. For |
2107 | instance, breakpoints may have been set (or reset, by | |
2108 | post_create_inferior) while connected to the target but before we | |
2109 | loaded the program. In that case, the prologue analyzer could | |
2110 | have read instructions from the target to find the right | |
2111 | breakpoint locations. Loading has changed the contents of that | |
2112 | memory. */ | |
2113 | ||
2114 | breakpoint_re_set (); | |
2115 | ||
a76d924d DJ |
2116 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2117 | total_progress.write_count, | |
dcb07cfa | 2118 | end_time - start_time); |
c906108c SS |
2119 | |
2120 | do_cleanups (old_cleanups); | |
2121 | } | |
2122 | ||
dcb07cfa PA |
2123 | /* Report on STREAM the performance of a memory transfer operation, |
2124 | such as 'load'. DATA_COUNT is the number of bytes transferred. | |
2125 | WRITE_COUNT is the number of separate write operations, or 0, if | |
2126 | that information is not available. TIME is how long the operation | |
2127 | lasted. */ | |
c906108c | 2128 | |
dcb07cfa | 2129 | static void |
d9fcf2fb | 2130 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2131 | unsigned long data_count, |
2132 | unsigned long write_count, | |
dcb07cfa | 2133 | std::chrono::steady_clock::duration time) |
917317f4 | 2134 | { |
dcb07cfa | 2135 | using namespace std::chrono; |
79a45e25 | 2136 | struct ui_out *uiout = current_uiout; |
2b71414d | 2137 | |
dcb07cfa | 2138 | milliseconds ms = duration_cast<milliseconds> (time); |
2b71414d | 2139 | |
112e8700 | 2140 | uiout->text ("Transfer rate: "); |
dcb07cfa | 2141 | if (ms.count () > 0) |
8b93c638 | 2142 | { |
dcb07cfa | 2143 | unsigned long rate = ((ULONGEST) data_count * 1000) / ms.count (); |
9f43d28c | 2144 | |
112e8700 | 2145 | if (uiout->is_mi_like_p ()) |
9f43d28c | 2146 | { |
112e8700 SM |
2147 | uiout->field_fmt ("transfer-rate", "%lu", rate * 8); |
2148 | uiout->text (" bits/sec"); | |
9f43d28c DJ |
2149 | } |
2150 | else if (rate < 1024) | |
2151 | { | |
112e8700 SM |
2152 | uiout->field_fmt ("transfer-rate", "%lu", rate); |
2153 | uiout->text (" bytes/sec"); | |
9f43d28c DJ |
2154 | } |
2155 | else | |
2156 | { | |
112e8700 SM |
2157 | uiout->field_fmt ("transfer-rate", "%lu", rate / 1024); |
2158 | uiout->text (" KB/sec"); | |
9f43d28c | 2159 | } |
8b93c638 JM |
2160 | } |
2161 | else | |
2162 | { | |
112e8700 SM |
2163 | uiout->field_fmt ("transferred-bits", "%lu", (data_count * 8)); |
2164 | uiout->text (" bits in <1 sec"); | |
8b93c638 JM |
2165 | } |
2166 | if (write_count > 0) | |
2167 | { | |
112e8700 SM |
2168 | uiout->text (", "); |
2169 | uiout->field_fmt ("write-rate", "%lu", data_count / write_count); | |
2170 | uiout->text (" bytes/write"); | |
8b93c638 | 2171 | } |
112e8700 | 2172 | uiout->text (".\n"); |
c906108c SS |
2173 | } |
2174 | ||
2175 | /* This function allows the addition of incrementally linked object files. | |
2176 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2177 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2178 | special case syntax for the rombug target (Rombug is the boot | |
2179 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2180 | rombug case, the user doesn't need to supply a text address, | |
2181 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2182 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2183 | |
c906108c | 2184 | static void |
2cf311eb | 2185 | add_symbol_file_command (const char *args, int from_tty) |
c906108c | 2186 | { |
5af949e3 | 2187 | struct gdbarch *gdbarch = get_current_arch (); |
ee0c3293 | 2188 | gdb::unique_xmalloc_ptr<char> filename; |
c906108c | 2189 | char *arg; |
2acceee2 JM |
2190 | int argcnt = 0; |
2191 | int sec_num = 0; | |
76ad5e1e | 2192 | struct objfile *objf; |
b15cc25c PA |
2193 | objfile_flags flags = OBJF_USERLOADED | OBJF_SHARED; |
2194 | symfile_add_flags add_flags = 0; | |
2195 | ||
2196 | if (from_tty) | |
2197 | add_flags |= SYMFILE_VERBOSE; | |
db162d44 | 2198 | |
a39a16c4 | 2199 | struct sect_opt |
2acceee2 | 2200 | { |
a121b7c1 PA |
2201 | const char *name; |
2202 | const char *value; | |
a39a16c4 | 2203 | }; |
db162d44 | 2204 | |
a39a16c4 | 2205 | struct section_addr_info *section_addrs; |
40fc416f SDJ |
2206 | std::vector<sect_opt> sect_opts = { { ".text", NULL } }; |
2207 | bool stop_processing_options = false; | |
3017564a | 2208 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2209 | |
c906108c SS |
2210 | dont_repeat (); |
2211 | ||
2212 | if (args == NULL) | |
8a3fe4f8 | 2213 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2214 | |
40fc416f | 2215 | bool seen_addr = false; |
773a1edc | 2216 | gdb_argv argv (args); |
db162d44 | 2217 | |
5b96932b AS |
2218 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2219 | { | |
40fc416f | 2220 | if (stop_processing_options || *arg != '-') |
41dc8db8 | 2221 | { |
40fc416f | 2222 | if (filename == NULL) |
41dc8db8 | 2223 | { |
40fc416f SDJ |
2224 | /* First non-option argument is always the filename. */ |
2225 | filename.reset (tilde_expand (arg)); | |
41dc8db8 | 2226 | } |
40fc416f | 2227 | else if (!seen_addr) |
41dc8db8 | 2228 | { |
40fc416f SDJ |
2229 | /* The second non-option argument is always the text |
2230 | address at which to load the program. */ | |
2231 | sect_opts[0].value = arg; | |
2232 | seen_addr = true; | |
41dc8db8 MB |
2233 | } |
2234 | else | |
02ca603a | 2235 | error (_("Unrecognized argument \"%s\""), arg); |
41dc8db8 | 2236 | } |
40fc416f SDJ |
2237 | else if (strcmp (arg, "-readnow") == 0) |
2238 | flags |= OBJF_READNOW; | |
2239 | else if (strcmp (arg, "-s") == 0) | |
2240 | { | |
2241 | if (argv[argcnt + 1] == NULL) | |
2242 | error (_("Missing section name after \"-s\"")); | |
2243 | else if (argv[argcnt + 2] == NULL) | |
2244 | error (_("Missing section address after \"-s\"")); | |
2245 | ||
2246 | sect_opt sect = { argv[argcnt + 1], argv[argcnt + 2] }; | |
2247 | ||
2248 | sect_opts.push_back (sect); | |
2249 | argcnt += 2; | |
2250 | } | |
2251 | else if (strcmp (arg, "--") == 0) | |
2252 | stop_processing_options = true; | |
2253 | else | |
2254 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c | 2255 | } |
c906108c | 2256 | |
40fc416f SDJ |
2257 | if (filename == NULL) |
2258 | error (_("You must provide a filename to be loaded.")); | |
2259 | ||
927890d0 JB |
2260 | /* This command takes at least two arguments. The first one is a |
2261 | filename, and the second is the address where this file has been | |
2262 | loaded. Abort now if this address hasn't been provided by the | |
2263 | user. */ | |
40fc416f | 2264 | if (!seen_addr) |
ee0c3293 TT |
2265 | error (_("The address where %s has been loaded is missing"), |
2266 | filename.get ()); | |
927890d0 | 2267 | |
c378eb4e | 2268 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2269 | a sect_addr_info structure to be passed around to other |
2270 | functions. We have to split this up into separate print | |
bb599908 | 2271 | statements because hex_string returns a local static |
c378eb4e | 2272 | string. */ |
5417f6dc | 2273 | |
ee0c3293 TT |
2274 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), |
2275 | filename.get ()); | |
f978cb06 | 2276 | section_addrs = alloc_section_addr_info (sect_opts.size ()); |
a39a16c4 | 2277 | make_cleanup (xfree, section_addrs); |
f978cb06 | 2278 | for (sect_opt § : sect_opts) |
c906108c | 2279 | { |
db162d44 | 2280 | CORE_ADDR addr; |
f978cb06 TT |
2281 | const char *val = sect.value; |
2282 | const char *sec = sect.name; | |
5417f6dc | 2283 | |
ae822768 | 2284 | addr = parse_and_eval_address (val); |
db162d44 | 2285 | |
db162d44 | 2286 | /* Here we store the section offsets in the order they were |
c378eb4e | 2287 | entered on the command line. */ |
a121b7c1 | 2288 | section_addrs->other[sec_num].name = (char *) sec; |
a39a16c4 | 2289 | section_addrs->other[sec_num].addr = addr; |
5af949e3 UW |
2290 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2291 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2292 | sec_num++; |
2293 | ||
5417f6dc | 2294 | /* The object's sections are initialized when a |
db162d44 | 2295 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2296 | This happens in reread_symbols. |
db162d44 EZ |
2297 | At this point, we don't know what file type this is, |
2298 | so we can't determine what section names are valid. */ | |
2acceee2 | 2299 | } |
d76488d8 | 2300 | section_addrs->num_sections = sec_num; |
db162d44 | 2301 | |
2acceee2 | 2302 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2303 | error (_("Not confirmed.")); |
c906108c | 2304 | |
ee0c3293 | 2305 | objf = symbol_file_add (filename.get (), add_flags, section_addrs, flags); |
76ad5e1e NB |
2306 | |
2307 | add_target_sections_of_objfile (objf); | |
c906108c SS |
2308 | |
2309 | /* Getting new symbols may change our opinion about what is | |
2310 | frameless. */ | |
2311 | reinit_frame_cache (); | |
db162d44 | 2312 | do_cleanups (my_cleanups); |
c906108c SS |
2313 | } |
2314 | \f | |
70992597 | 2315 | |
63644780 NB |
2316 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2317 | ||
2318 | static void | |
2cf311eb | 2319 | remove_symbol_file_command (const char *args, int from_tty) |
63644780 | 2320 | { |
63644780 | 2321 | struct objfile *objf = NULL; |
63644780 | 2322 | struct program_space *pspace = current_program_space; |
63644780 NB |
2323 | |
2324 | dont_repeat (); | |
2325 | ||
2326 | if (args == NULL) | |
2327 | error (_("remove-symbol-file: no symbol file provided")); | |
2328 | ||
773a1edc | 2329 | gdb_argv argv (args); |
63644780 NB |
2330 | |
2331 | if (strcmp (argv[0], "-a") == 0) | |
2332 | { | |
2333 | /* Interpret the next argument as an address. */ | |
2334 | CORE_ADDR addr; | |
2335 | ||
2336 | if (argv[1] == NULL) | |
2337 | error (_("Missing address argument")); | |
2338 | ||
2339 | if (argv[2] != NULL) | |
2340 | error (_("Junk after %s"), argv[1]); | |
2341 | ||
2342 | addr = parse_and_eval_address (argv[1]); | |
2343 | ||
2344 | ALL_OBJFILES (objf) | |
2345 | { | |
d03de421 PA |
2346 | if ((objf->flags & OBJF_USERLOADED) != 0 |
2347 | && (objf->flags & OBJF_SHARED) != 0 | |
63644780 NB |
2348 | && objf->pspace == pspace && is_addr_in_objfile (addr, objf)) |
2349 | break; | |
2350 | } | |
2351 | } | |
2352 | else if (argv[0] != NULL) | |
2353 | { | |
2354 | /* Interpret the current argument as a file name. */ | |
63644780 NB |
2355 | |
2356 | if (argv[1] != NULL) | |
2357 | error (_("Junk after %s"), argv[0]); | |
2358 | ||
ee0c3293 | 2359 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
63644780 NB |
2360 | |
2361 | ALL_OBJFILES (objf) | |
2362 | { | |
d03de421 PA |
2363 | if ((objf->flags & OBJF_USERLOADED) != 0 |
2364 | && (objf->flags & OBJF_SHARED) != 0 | |
63644780 | 2365 | && objf->pspace == pspace |
ee0c3293 | 2366 | && filename_cmp (filename.get (), objfile_name (objf)) == 0) |
63644780 NB |
2367 | break; |
2368 | } | |
2369 | } | |
2370 | ||
2371 | if (objf == NULL) | |
2372 | error (_("No symbol file found")); | |
2373 | ||
2374 | if (from_tty | |
2375 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2376 | objfile_name (objf))) | |
2377 | error (_("Not confirmed.")); | |
2378 | ||
9e86da07 | 2379 | delete objf; |
63644780 | 2380 | clear_symtab_users (0); |
63644780 NB |
2381 | } |
2382 | ||
c906108c | 2383 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2384 | |
c906108c | 2385 | void |
fba45db2 | 2386 | reread_symbols (void) |
c906108c SS |
2387 | { |
2388 | struct objfile *objfile; | |
2389 | long new_modtime; | |
c906108c SS |
2390 | struct stat new_statbuf; |
2391 | int res; | |
4c404b8b | 2392 | std::vector<struct objfile *> new_objfiles; |
c906108c SS |
2393 | |
2394 | /* With the addition of shared libraries, this should be modified, | |
2395 | the load time should be saved in the partial symbol tables, since | |
2396 | different tables may come from different source files. FIXME. | |
2397 | This routine should then walk down each partial symbol table | |
c378eb4e | 2398 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2399 | |
c5aa993b JM |
2400 | for (objfile = object_files; objfile; objfile = objfile->next) |
2401 | { | |
9cce227f TG |
2402 | if (objfile->obfd == NULL) |
2403 | continue; | |
2404 | ||
2405 | /* Separate debug objfiles are handled in the main objfile. */ | |
2406 | if (objfile->separate_debug_objfile_backlink) | |
2407 | continue; | |
2408 | ||
02aeec7b JB |
2409 | /* If this object is from an archive (what you usually create with |
2410 | `ar', often called a `static library' on most systems, though | |
2411 | a `shared library' on AIX is also an archive), then you should | |
2412 | stat on the archive name, not member name. */ | |
9cce227f TG |
2413 | if (objfile->obfd->my_archive) |
2414 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2415 | else | |
4262abfb | 2416 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2417 | if (res != 0) |
2418 | { | |
c378eb4e | 2419 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
9cce227f | 2420 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
4262abfb | 2421 | objfile_name (objfile)); |
9cce227f TG |
2422 | continue; |
2423 | } | |
2424 | new_modtime = new_statbuf.st_mtime; | |
2425 | if (new_modtime != objfile->mtime) | |
2426 | { | |
2427 | struct cleanup *old_cleanups; | |
2428 | struct section_offsets *offsets; | |
2429 | int num_offsets; | |
24ba069a | 2430 | char *original_name; |
9cce227f TG |
2431 | |
2432 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
4262abfb | 2433 | objfile_name (objfile)); |
9cce227f TG |
2434 | |
2435 | /* There are various functions like symbol_file_add, | |
2436 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2437 | appear to do what we want. But they have various other | |
2438 | effects which we *don't* want. So we just do stuff | |
2439 | ourselves. We don't worry about mapped files (for one thing, | |
2440 | any mapped file will be out of date). */ | |
2441 | ||
2442 | /* If we get an error, blow away this objfile (not sure if | |
2443 | that is the correct response for things like shared | |
2444 | libraries). */ | |
ed2b3126 TT |
2445 | std::unique_ptr<struct objfile> objfile_holder (objfile); |
2446 | ||
9cce227f | 2447 | /* We need to do this whenever any symbols go away. */ |
ed2b3126 | 2448 | old_cleanups = make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
9cce227f | 2449 | |
0ba1096a KT |
2450 | if (exec_bfd != NULL |
2451 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2452 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2453 | { |
2454 | /* Reload EXEC_BFD without asking anything. */ | |
2455 | ||
2456 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2457 | } | |
2458 | ||
f6eeced0 JK |
2459 | /* Keep the calls order approx. the same as in free_objfile. */ |
2460 | ||
2461 | /* Free the separate debug objfiles. It will be | |
2462 | automatically recreated by sym_read. */ | |
2463 | free_objfile_separate_debug (objfile); | |
2464 | ||
2465 | /* Remove any references to this objfile in the global | |
2466 | value lists. */ | |
2467 | preserve_values (objfile); | |
2468 | ||
2469 | /* Nuke all the state that we will re-read. Much of the following | |
2470 | code which sets things to NULL really is necessary to tell | |
2471 | other parts of GDB that there is nothing currently there. | |
2472 | ||
2473 | Try to keep the freeing order compatible with free_objfile. */ | |
2474 | ||
2475 | if (objfile->sf != NULL) | |
2476 | { | |
2477 | (*objfile->sf->sym_finish) (objfile); | |
2478 | } | |
2479 | ||
2480 | clear_objfile_data (objfile); | |
2481 | ||
e1507e95 | 2482 | /* Clean up any state BFD has sitting around. */ |
a4453b7e | 2483 | { |
192b62ce | 2484 | gdb_bfd_ref_ptr obfd (objfile->obfd); |
d3846e71 | 2485 | char *obfd_filename; |
a4453b7e TT |
2486 | |
2487 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2488 | /* Open the new BFD before freeing the old one, so that | |
2489 | the filename remains live. */ | |
192b62ce TT |
2490 | gdb_bfd_ref_ptr temp (gdb_bfd_open (obfd_filename, gnutarget, -1)); |
2491 | objfile->obfd = temp.release (); | |
e1507e95 | 2492 | if (objfile->obfd == NULL) |
192b62ce | 2493 | error (_("Can't open %s to read symbols."), obfd_filename); |
a4453b7e TT |
2494 | } |
2495 | ||
24ba069a JK |
2496 | original_name = xstrdup (objfile->original_name); |
2497 | make_cleanup (xfree, original_name); | |
2498 | ||
9cce227f TG |
2499 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2500 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
4262abfb | 2501 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2502 | bfd_errmsg (bfd_get_error ())); |
2503 | ||
2504 | /* Save the offsets, we will nuke them with the rest of the | |
2505 | objfile_obstack. */ | |
2506 | num_offsets = objfile->num_sections; | |
2507 | offsets = ((struct section_offsets *) | |
2508 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2509 | memcpy (offsets, objfile->section_offsets, | |
2510 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2511 | ||
9cce227f TG |
2512 | /* FIXME: Do we have to free a whole linked list, or is this |
2513 | enough? */ | |
af5bf4ad SM |
2514 | objfile->global_psymbols.clear (); |
2515 | objfile->static_psymbols.clear (); | |
9cce227f | 2516 | |
c378eb4e | 2517 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2518 | psymbol_bcache_free (objfile->psymbol_cache); |
2519 | objfile->psymbol_cache = psymbol_bcache_init (); | |
41664b45 DG |
2520 | |
2521 | /* NB: after this call to obstack_free, objfiles_changed | |
2522 | will need to be called (see discussion below). */ | |
9cce227f TG |
2523 | obstack_free (&objfile->objfile_obstack, 0); |
2524 | objfile->sections = NULL; | |
43f3e411 | 2525 | objfile->compunit_symtabs = NULL; |
9cce227f TG |
2526 | objfile->psymtabs = NULL; |
2527 | objfile->psymtabs_addrmap = NULL; | |
2528 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2529 | objfile->template_symbols = NULL; |
9cce227f | 2530 | |
9cce227f TG |
2531 | /* obstack_init also initializes the obstack so it is |
2532 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2533 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2534 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2535 | |
846060df JB |
2536 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2537 | data on the objfile's obstack (if sharing data across | |
2538 | multiple users is not possible), so it's important to | |
2539 | do it *after* the obstack has been initialized. */ | |
2540 | set_objfile_per_bfd (objfile); | |
2541 | ||
224c3ddb SM |
2542 | objfile->original_name |
2543 | = (char *) obstack_copy0 (&objfile->objfile_obstack, original_name, | |
2544 | strlen (original_name)); | |
24ba069a | 2545 | |
779bd270 DE |
2546 | /* Reset the sym_fns pointer. The ELF reader can change it |
2547 | based on whether .gdb_index is present, and we need it to | |
2548 | start over. PR symtab/15885 */ | |
8fb8eb5c | 2549 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
779bd270 | 2550 | |
d82ea6a8 | 2551 | build_objfile_section_table (objfile); |
9cce227f TG |
2552 | terminate_minimal_symbol_table (objfile); |
2553 | ||
2554 | /* We use the same section offsets as from last time. I'm not | |
2555 | sure whether that is always correct for shared libraries. */ | |
2556 | objfile->section_offsets = (struct section_offsets *) | |
2557 | obstack_alloc (&objfile->objfile_obstack, | |
2558 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2559 | memcpy (objfile->section_offsets, offsets, | |
2560 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2561 | objfile->num_sections = num_offsets; | |
2562 | ||
2563 | /* What the hell is sym_new_init for, anyway? The concept of | |
2564 | distinguishing between the main file and additional files | |
2565 | in this way seems rather dubious. */ | |
2566 | if (objfile == symfile_objfile) | |
c906108c | 2567 | { |
9cce227f | 2568 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2569 | } |
9cce227f TG |
2570 | |
2571 | (*objfile->sf->sym_init) (objfile); | |
2572 | clear_complaints (&symfile_complaints, 1, 1); | |
608e2dbb TT |
2573 | |
2574 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
41664b45 DG |
2575 | |
2576 | /* We are about to read new symbols and potentially also | |
2577 | DWARF information. Some targets may want to pass addresses | |
2578 | read from DWARF DIE's through an adjustment function before | |
2579 | saving them, like MIPS, which may call into | |
2580 | "find_pc_section". When called, that function will make | |
2581 | use of per-objfile program space data. | |
2582 | ||
2583 | Since we discarded our section information above, we have | |
2584 | dangling pointers in the per-objfile program space data | |
2585 | structure. Force GDB to update the section mapping | |
2586 | information by letting it know the objfile has changed, | |
2587 | making the dangling pointers point to correct data | |
2588 | again. */ | |
2589 | ||
2590 | objfiles_changed (); | |
2591 | ||
608e2dbb | 2592 | read_symbols (objfile, 0); |
b11896a5 | 2593 | |
9cce227f | 2594 | if (!objfile_has_symbols (objfile)) |
c906108c | 2595 | { |
9cce227f TG |
2596 | wrap_here (""); |
2597 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2598 | wrap_here (""); | |
c5aa993b | 2599 | } |
9cce227f TG |
2600 | |
2601 | /* We're done reading the symbol file; finish off complaints. */ | |
2602 | clear_complaints (&symfile_complaints, 0, 1); | |
2603 | ||
2604 | /* Getting new symbols may change our opinion about what is | |
2605 | frameless. */ | |
2606 | ||
2607 | reinit_frame_cache (); | |
2608 | ||
2609 | /* Discard cleanups as symbol reading was successful. */ | |
ed2b3126 | 2610 | objfile_holder.release (); |
9cce227f TG |
2611 | discard_cleanups (old_cleanups); |
2612 | ||
2613 | /* If the mtime has changed between the time we set new_modtime | |
2614 | and now, we *want* this to be out of date, so don't call stat | |
2615 | again now. */ | |
2616 | objfile->mtime = new_modtime; | |
9cce227f | 2617 | init_entry_point_info (objfile); |
4ac39b97 | 2618 | |
4c404b8b | 2619 | new_objfiles.push_back (objfile); |
c906108c SS |
2620 | } |
2621 | } | |
c906108c | 2622 | |
4c404b8b | 2623 | if (!new_objfiles.empty ()) |
ea53e89f | 2624 | { |
c1e56572 | 2625 | clear_symtab_users (0); |
4ac39b97 JK |
2626 | |
2627 | /* clear_objfile_data for each objfile was called before freeing it and | |
2628 | observer_notify_new_objfile (NULL) has been called by | |
2629 | clear_symtab_users above. Notify the new files now. */ | |
4c404b8b TT |
2630 | for (auto iter : new_objfiles) |
2631 | observer_notify_new_objfile (iter); | |
4ac39b97 | 2632 | |
ea53e89f JB |
2633 | /* At least one objfile has changed, so we can consider that |
2634 | the executable we're debugging has changed too. */ | |
781b42b0 | 2635 | observer_notify_executable_changed (); |
ea53e89f | 2636 | } |
c906108c | 2637 | } |
c906108c SS |
2638 | \f |
2639 | ||
593e3209 | 2640 | struct filename_language |
c5aa993b | 2641 | { |
593e3209 SM |
2642 | filename_language (const std::string &ext_, enum language lang_) |
2643 | : ext (ext_), lang (lang_) | |
2644 | {} | |
3fcf0b0d | 2645 | |
593e3209 SM |
2646 | std::string ext; |
2647 | enum language lang; | |
2648 | }; | |
c906108c | 2649 | |
593e3209 | 2650 | static std::vector<filename_language> filename_language_table; |
c906108c | 2651 | |
56618e20 TT |
2652 | /* See symfile.h. */ |
2653 | ||
2654 | void | |
2655 | add_filename_language (const char *ext, enum language lang) | |
c906108c | 2656 | { |
593e3209 | 2657 | filename_language_table.emplace_back (ext, lang); |
c906108c SS |
2658 | } |
2659 | ||
2660 | static char *ext_args; | |
920d2a44 AC |
2661 | static void |
2662 | show_ext_args (struct ui_file *file, int from_tty, | |
2663 | struct cmd_list_element *c, const char *value) | |
2664 | { | |
3e43a32a MS |
2665 | fprintf_filtered (file, |
2666 | _("Mapping between filename extension " | |
2667 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2668 | value); |
2669 | } | |
c906108c SS |
2670 | |
2671 | static void | |
eb4c3f4a TT |
2672 | set_ext_lang_command (const char *args, |
2673 | int from_tty, struct cmd_list_element *e) | |
c906108c | 2674 | { |
c906108c SS |
2675 | char *cp = ext_args; |
2676 | enum language lang; | |
2677 | ||
c378eb4e | 2678 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2679 | if (*cp != '.') |
8a3fe4f8 | 2680 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2681 | |
2682 | /* Find end of first arg. */ | |
c5aa993b | 2683 | while (*cp && !isspace (*cp)) |
c906108c SS |
2684 | cp++; |
2685 | ||
2686 | if (*cp == '\0') | |
3e43a32a MS |
2687 | error (_("'%s': two arguments required -- " |
2688 | "filename extension and language"), | |
c906108c SS |
2689 | ext_args); |
2690 | ||
c378eb4e | 2691 | /* Null-terminate first arg. */ |
c5aa993b | 2692 | *cp++ = '\0'; |
c906108c SS |
2693 | |
2694 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2695 | cp = skip_spaces (cp); |
c906108c SS |
2696 | |
2697 | if (*cp == '\0') | |
3e43a32a MS |
2698 | error (_("'%s': two arguments required -- " |
2699 | "filename extension and language"), | |
c906108c SS |
2700 | ext_args); |
2701 | ||
2702 | /* Lookup the language from among those we know. */ | |
2703 | lang = language_enum (cp); | |
2704 | ||
593e3209 | 2705 | auto it = filename_language_table.begin (); |
c906108c | 2706 | /* Now lookup the filename extension: do we already know it? */ |
593e3209 | 2707 | for (; it != filename_language_table.end (); it++) |
3fcf0b0d | 2708 | { |
593e3209 | 2709 | if (it->ext == ext_args) |
3fcf0b0d TT |
2710 | break; |
2711 | } | |
c906108c | 2712 | |
593e3209 | 2713 | if (it == filename_language_table.end ()) |
c906108c | 2714 | { |
c378eb4e | 2715 | /* New file extension. */ |
c906108c SS |
2716 | add_filename_language (ext_args, lang); |
2717 | } | |
2718 | else | |
2719 | { | |
c378eb4e | 2720 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2721 | |
2722 | /* if (from_tty) */ | |
2723 | /* query ("Really make files of type %s '%s'?", */ | |
2724 | /* ext_args, language_str (lang)); */ | |
2725 | ||
593e3209 | 2726 | it->lang = lang; |
c906108c SS |
2727 | } |
2728 | } | |
2729 | ||
2730 | static void | |
1d12d88f | 2731 | info_ext_lang_command (const char *args, int from_tty) |
c906108c | 2732 | { |
a3f17187 | 2733 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c | 2734 | printf_filtered ("\n\n"); |
593e3209 SM |
2735 | for (const filename_language &entry : filename_language_table) |
2736 | printf_filtered ("\t%s\t- %s\n", entry.ext.c_str (), | |
2737 | language_str (entry.lang)); | |
c906108c SS |
2738 | } |
2739 | ||
c906108c | 2740 | enum language |
dd786858 | 2741 | deduce_language_from_filename (const char *filename) |
c906108c | 2742 | { |
e6a959d6 | 2743 | const char *cp; |
c906108c SS |
2744 | |
2745 | if (filename != NULL) | |
2746 | if ((cp = strrchr (filename, '.')) != NULL) | |
3fcf0b0d | 2747 | { |
593e3209 SM |
2748 | for (const filename_language &entry : filename_language_table) |
2749 | if (entry.ext == cp) | |
2750 | return entry.lang; | |
3fcf0b0d | 2751 | } |
c906108c SS |
2752 | |
2753 | return language_unknown; | |
2754 | } | |
2755 | \f | |
43f3e411 DE |
2756 | /* Allocate and initialize a new symbol table. |
2757 | CUST is from the result of allocate_compunit_symtab. */ | |
c906108c SS |
2758 | |
2759 | struct symtab * | |
43f3e411 | 2760 | allocate_symtab (struct compunit_symtab *cust, const char *filename) |
c906108c | 2761 | { |
43f3e411 DE |
2762 | struct objfile *objfile = cust->objfile; |
2763 | struct symtab *symtab | |
2764 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symtab); | |
c906108c | 2765 | |
19ba03f4 SM |
2766 | symtab->filename |
2767 | = (const char *) bcache (filename, strlen (filename) + 1, | |
21ea9eec | 2768 | objfile->per_bfd->filename_cache); |
c5aa993b JM |
2769 | symtab->fullname = NULL; |
2770 | symtab->language = deduce_language_from_filename (filename); | |
c906108c | 2771 | |
db0fec5c DE |
2772 | /* This can be very verbose with lots of headers. |
2773 | Only print at higher debug levels. */ | |
2774 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2775 | { |
2776 | /* Be a bit clever with debugging messages, and don't print objfile | |
2777 | every time, only when it changes. */ | |
2778 | static char *last_objfile_name = NULL; | |
2779 | ||
2780 | if (last_objfile_name == NULL | |
4262abfb | 2781 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
45cfd468 DE |
2782 | { |
2783 | xfree (last_objfile_name); | |
4262abfb | 2784 | last_objfile_name = xstrdup (objfile_name (objfile)); |
45cfd468 DE |
2785 | fprintf_unfiltered (gdb_stdlog, |
2786 | "Creating one or more symtabs for objfile %s ...\n", | |
2787 | last_objfile_name); | |
2788 | } | |
2789 | fprintf_unfiltered (gdb_stdlog, | |
b3dbbd6f PM |
2790 | "Created symtab %s for module %s.\n", |
2791 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2792 | } |
2793 | ||
43f3e411 DE |
2794 | /* Add it to CUST's list of symtabs. */ |
2795 | if (cust->filetabs == NULL) | |
2796 | { | |
2797 | cust->filetabs = symtab; | |
2798 | cust->last_filetab = symtab; | |
2799 | } | |
2800 | else | |
2801 | { | |
2802 | cust->last_filetab->next = symtab; | |
2803 | cust->last_filetab = symtab; | |
2804 | } | |
2805 | ||
2806 | /* Backlink to the containing compunit symtab. */ | |
2807 | symtab->compunit_symtab = cust; | |
2808 | ||
2809 | return symtab; | |
2810 | } | |
2811 | ||
2812 | /* Allocate and initialize a new compunit. | |
2813 | NAME is the name of the main source file, if there is one, or some | |
2814 | descriptive text if there are no source files. */ | |
2815 | ||
2816 | struct compunit_symtab * | |
2817 | allocate_compunit_symtab (struct objfile *objfile, const char *name) | |
2818 | { | |
2819 | struct compunit_symtab *cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2820 | struct compunit_symtab); | |
2821 | const char *saved_name; | |
2822 | ||
2823 | cu->objfile = objfile; | |
2824 | ||
2825 | /* The name we record here is only for display/debugging purposes. | |
2826 | Just save the basename to avoid path issues (too long for display, | |
2827 | relative vs absolute, etc.). */ | |
2828 | saved_name = lbasename (name); | |
224c3ddb SM |
2829 | cu->name |
2830 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, saved_name, | |
2831 | strlen (saved_name)); | |
43f3e411 DE |
2832 | |
2833 | COMPUNIT_DEBUGFORMAT (cu) = "unknown"; | |
2834 | ||
2835 | if (symtab_create_debug) | |
2836 | { | |
2837 | fprintf_unfiltered (gdb_stdlog, | |
2838 | "Created compunit symtab %s for %s.\n", | |
2839 | host_address_to_string (cu), | |
2840 | cu->name); | |
2841 | } | |
2842 | ||
2843 | return cu; | |
2844 | } | |
2845 | ||
2846 | /* Hook CU to the objfile it comes from. */ | |
2847 | ||
2848 | void | |
2849 | add_compunit_symtab_to_objfile (struct compunit_symtab *cu) | |
2850 | { | |
2851 | cu->next = cu->objfile->compunit_symtabs; | |
2852 | cu->objfile->compunit_symtabs = cu; | |
c906108c | 2853 | } |
c906108c | 2854 | \f |
c5aa993b | 2855 | |
b15cc25c PA |
2856 | /* Reset all data structures in gdb which may contain references to |
2857 | symbol table data. */ | |
c906108c SS |
2858 | |
2859 | void | |
b15cc25c | 2860 | clear_symtab_users (symfile_add_flags add_flags) |
c906108c SS |
2861 | { |
2862 | /* Someday, we should do better than this, by only blowing away | |
2863 | the things that really need to be blown. */ | |
c0501be5 DJ |
2864 | |
2865 | /* Clear the "current" symtab first, because it is no longer valid. | |
2866 | breakpoint_re_set may try to access the current symtab. */ | |
2867 | clear_current_source_symtab_and_line (); | |
2868 | ||
c906108c | 2869 | clear_displays (); |
1bfeeb0f | 2870 | clear_last_displayed_sal (); |
c906108c | 2871 | clear_pc_function_cache (); |
06d3b283 | 2872 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2873 | |
2874 | /* Clear globals which might have pointed into a removed objfile. | |
2875 | FIXME: It's not clear which of these are supposed to persist | |
2876 | between expressions and which ought to be reset each time. */ | |
2877 | expression_context_block = NULL; | |
2878 | innermost_block = NULL; | |
8756216b DP |
2879 | |
2880 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2881 | varobj_invalidate (); | |
2882 | ||
e700d1b2 JB |
2883 | /* Now that the various caches have been cleared, we can re_set |
2884 | our breakpoints without risking it using stale data. */ | |
2885 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) | |
2886 | breakpoint_re_set (); | |
c906108c SS |
2887 | } |
2888 | ||
74b7792f AC |
2889 | static void |
2890 | clear_symtab_users_cleanup (void *ignore) | |
2891 | { | |
c1e56572 | 2892 | clear_symtab_users (0); |
74b7792f | 2893 | } |
c906108c | 2894 | \f |
c906108c SS |
2895 | /* OVERLAYS: |
2896 | The following code implements an abstraction for debugging overlay sections. | |
2897 | ||
2898 | The target model is as follows: | |
2899 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2900 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2901 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2902 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2903 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2904 | sections should be considered to be mapped from the VMA to the LMA. |
2905 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2906 | For instance, if a section has been mapped then its contents |
c5aa993b | 2907 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2908 | |
2909 | Two levels of debugger support for overlays are available. One is | |
2910 | "manual", in which the debugger relies on the user to tell it which | |
2911 | overlays are currently mapped. This level of support is | |
2912 | implemented entirely in the core debugger, and the information about | |
2913 | whether a section is mapped is kept in the objfile->obj_section table. | |
2914 | ||
2915 | The second level of support is "automatic", and is only available if | |
2916 | the target-specific code provides functionality to read the target's | |
2917 | overlay mapping table, and translate its contents for the debugger | |
2918 | (by updating the mapped state information in the obj_section tables). | |
2919 | ||
2920 | The interface is as follows: | |
c5aa993b JM |
2921 | User commands: |
2922 | overlay map <name> -- tell gdb to consider this section mapped | |
2923 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2924 | overlay list -- list the sections that GDB thinks are mapped | |
2925 | overlay read-target -- get the target's state of what's mapped | |
2926 | overlay off/manual/auto -- set overlay debugging state | |
2927 | Functional interface: | |
2928 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2929 | section, return that section. | |
5417f6dc | 2930 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2931 | the pc, either in its VMA or its LMA |
714835d5 | 2932 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2933 | section_is_overlay(sect): true if section's VMA != LMA |
2934 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2935 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2936 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2937 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2938 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2939 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2940 | either in VMA or LMA depending on whether | |
c378eb4e | 2941 | the symbol's section is currently mapped. */ |
c906108c SS |
2942 | |
2943 | /* Overlay debugging state: */ | |
2944 | ||
d874f1e2 | 2945 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2946 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2947 | |
c906108c | 2948 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2949 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2950 | SECTION is loaded at an address different from where it will "run". */ |
2951 | ||
2952 | int | |
714835d5 | 2953 | section_is_overlay (struct obj_section *section) |
c906108c | 2954 | { |
714835d5 UW |
2955 | if (overlay_debugging && section) |
2956 | { | |
2957 | bfd *abfd = section->objfile->obfd; | |
2958 | asection *bfd_section = section->the_bfd_section; | |
f888f159 | 2959 | |
714835d5 UW |
2960 | if (bfd_section_lma (abfd, bfd_section) != 0 |
2961 | && bfd_section_lma (abfd, bfd_section) | |
2962 | != bfd_section_vma (abfd, bfd_section)) | |
2963 | return 1; | |
2964 | } | |
c906108c SS |
2965 | |
2966 | return 0; | |
2967 | } | |
2968 | ||
2969 | /* Function: overlay_invalidate_all (void) | |
2970 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2971 | ||
2972 | static void | |
fba45db2 | 2973 | overlay_invalidate_all (void) |
c906108c | 2974 | { |
c5aa993b | 2975 | struct objfile *objfile; |
c906108c SS |
2976 | struct obj_section *sect; |
2977 | ||
2978 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
2979 | if (section_is_overlay (sect)) |
2980 | sect->ovly_mapped = -1; | |
c906108c SS |
2981 | } |
2982 | ||
714835d5 | 2983 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 2984 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
2985 | |
2986 | Access to the ovly_mapped flag is restricted to this function, so | |
2987 | that we can do automatic update. If the global flag | |
2988 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2989 | overlay_invalidate_all. If the mapped state of the particular | |
2990 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2991 | ||
714835d5 UW |
2992 | int |
2993 | section_is_mapped (struct obj_section *osect) | |
c906108c | 2994 | { |
9216df95 UW |
2995 | struct gdbarch *gdbarch; |
2996 | ||
714835d5 | 2997 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
2998 | return 0; |
2999 | ||
c5aa993b | 3000 | switch (overlay_debugging) |
c906108c SS |
3001 | { |
3002 | default: | |
d874f1e2 | 3003 | case ovly_off: |
c5aa993b | 3004 | return 0; /* overlay debugging off */ |
d874f1e2 | 3005 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3006 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3007 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3008 | gdbarch = get_objfile_arch (osect->objfile); |
3009 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3010 | { |
3011 | if (overlay_cache_invalid) | |
3012 | { | |
3013 | overlay_invalidate_all (); | |
3014 | overlay_cache_invalid = 0; | |
3015 | } | |
3016 | if (osect->ovly_mapped == -1) | |
9216df95 | 3017 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
3018 | } |
3019 | /* fall thru to manual case */ | |
d874f1e2 | 3020 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3021 | return osect->ovly_mapped == 1; |
3022 | } | |
3023 | } | |
3024 | ||
c906108c SS |
3025 | /* Function: pc_in_unmapped_range |
3026 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3027 | ||
3028 | CORE_ADDR | |
714835d5 | 3029 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3030 | { |
714835d5 UW |
3031 | if (section_is_overlay (section)) |
3032 | { | |
3033 | bfd *abfd = section->objfile->obfd; | |
3034 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3035 | |
714835d5 UW |
3036 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3037 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3038 | CORE_ADDR offset = obj_section_offset (section); | |
3039 | ||
3040 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3041 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3042 | return 1; | |
3043 | } | |
c906108c | 3044 | |
c906108c SS |
3045 | return 0; |
3046 | } | |
3047 | ||
3048 | /* Function: pc_in_mapped_range | |
3049 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3050 | ||
3051 | CORE_ADDR | |
714835d5 | 3052 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3053 | { |
714835d5 UW |
3054 | if (section_is_overlay (section)) |
3055 | { | |
3056 | if (obj_section_addr (section) <= pc | |
3057 | && pc < obj_section_endaddr (section)) | |
3058 | return 1; | |
3059 | } | |
c906108c | 3060 | |
c906108c SS |
3061 | return 0; |
3062 | } | |
3063 | ||
9ec8e6a0 JB |
3064 | /* Return true if the mapped ranges of sections A and B overlap, false |
3065 | otherwise. */ | |
3b7bacac | 3066 | |
b9362cc7 | 3067 | static int |
714835d5 | 3068 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3069 | { |
714835d5 UW |
3070 | CORE_ADDR a_start = obj_section_addr (a); |
3071 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3072 | CORE_ADDR b_start = obj_section_addr (b); | |
3073 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3074 | |
3075 | return (a_start < b_end && b_start < a_end); | |
3076 | } | |
3077 | ||
c906108c SS |
3078 | /* Function: overlay_unmapped_address (PC, SECTION) |
3079 | Returns the address corresponding to PC in the unmapped (load) range. | |
3080 | May be the same as PC. */ | |
3081 | ||
3082 | CORE_ADDR | |
714835d5 | 3083 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3084 | { |
714835d5 UW |
3085 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3086 | { | |
3087 | bfd *abfd = section->objfile->obfd; | |
3088 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3089 | |
714835d5 UW |
3090 | return pc + bfd_section_lma (abfd, bfd_section) |
3091 | - bfd_section_vma (abfd, bfd_section); | |
3092 | } | |
c906108c SS |
3093 | |
3094 | return pc; | |
3095 | } | |
3096 | ||
3097 | /* Function: overlay_mapped_address (PC, SECTION) | |
3098 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3099 | May be the same as PC. */ | |
3100 | ||
3101 | CORE_ADDR | |
714835d5 | 3102 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3103 | { |
714835d5 UW |
3104 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3105 | { | |
3106 | bfd *abfd = section->objfile->obfd; | |
3107 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3108 | |
714835d5 UW |
3109 | return pc + bfd_section_vma (abfd, bfd_section) |
3110 | - bfd_section_lma (abfd, bfd_section); | |
3111 | } | |
c906108c SS |
3112 | |
3113 | return pc; | |
3114 | } | |
3115 | ||
5417f6dc | 3116 | /* Function: symbol_overlayed_address |
c906108c SS |
3117 | Return one of two addresses (relative to the VMA or to the LMA), |
3118 | depending on whether the section is mapped or not. */ | |
3119 | ||
c5aa993b | 3120 | CORE_ADDR |
714835d5 | 3121 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3122 | { |
3123 | if (overlay_debugging) | |
3124 | { | |
c378eb4e | 3125 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3126 | if (section == 0) |
3127 | return address; | |
c378eb4e MS |
3128 | /* If the symbol's section is not an overlay, just return its |
3129 | address. */ | |
c906108c SS |
3130 | if (!section_is_overlay (section)) |
3131 | return address; | |
c378eb4e | 3132 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3133 | if (section_is_mapped (section)) |
3134 | return address; | |
3135 | /* | |
3136 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3137 | * then return its LOADED address rather than its vma address!! | |
3138 | */ | |
3139 | return overlay_unmapped_address (address, section); | |
3140 | } | |
3141 | return address; | |
3142 | } | |
3143 | ||
5417f6dc | 3144 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3145 | Return the best-match overlay section for PC: |
3146 | If PC matches a mapped overlay section's VMA, return that section. | |
3147 | Else if PC matches an unmapped section's VMA, return that section. | |
3148 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3149 | ||
714835d5 | 3150 | struct obj_section * |
fba45db2 | 3151 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3152 | { |
c5aa993b | 3153 | struct objfile *objfile; |
c906108c SS |
3154 | struct obj_section *osect, *best_match = NULL; |
3155 | ||
3156 | if (overlay_debugging) | |
b631e59b KT |
3157 | { |
3158 | ALL_OBJSECTIONS (objfile, osect) | |
3159 | if (section_is_overlay (osect)) | |
c5aa993b | 3160 | { |
b631e59b KT |
3161 | if (pc_in_mapped_range (pc, osect)) |
3162 | { | |
3163 | if (section_is_mapped (osect)) | |
3164 | return osect; | |
3165 | else | |
3166 | best_match = osect; | |
3167 | } | |
3168 | else if (pc_in_unmapped_range (pc, osect)) | |
c5aa993b JM |
3169 | best_match = osect; |
3170 | } | |
b631e59b | 3171 | } |
714835d5 | 3172 | return best_match; |
c906108c SS |
3173 | } |
3174 | ||
3175 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3176 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3177 | currently marked as MAPPED, return that section. Else return NULL. */ |
3178 | ||
714835d5 | 3179 | struct obj_section * |
fba45db2 | 3180 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3181 | { |
c5aa993b | 3182 | struct objfile *objfile; |
c906108c SS |
3183 | struct obj_section *osect; |
3184 | ||
3185 | if (overlay_debugging) | |
b631e59b KT |
3186 | { |
3187 | ALL_OBJSECTIONS (objfile, osect) | |
3188 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) | |
3189 | return osect; | |
3190 | } | |
c906108c SS |
3191 | |
3192 | return NULL; | |
3193 | } | |
3194 | ||
3195 | /* Function: list_overlays_command | |
c378eb4e | 3196 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3197 | |
5d3055ad | 3198 | static void |
2cf311eb | 3199 | list_overlays_command (const char *args, int from_tty) |
c906108c | 3200 | { |
c5aa993b JM |
3201 | int nmapped = 0; |
3202 | struct objfile *objfile; | |
c906108c SS |
3203 | struct obj_section *osect; |
3204 | ||
3205 | if (overlay_debugging) | |
b631e59b KT |
3206 | { |
3207 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3208 | if (section_is_mapped (osect)) |
b631e59b KT |
3209 | { |
3210 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3211 | const char *name; | |
3212 | bfd_vma lma, vma; | |
3213 | int size; | |
3214 | ||
3215 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3216 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
3217 | size = bfd_get_section_size (osect->the_bfd_section); | |
3218 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
3219 | ||
3220 | printf_filtered ("Section %s, loaded at ", name); | |
3221 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); | |
3222 | puts_filtered (" - "); | |
3223 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); | |
3224 | printf_filtered (", mapped at "); | |
3225 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); | |
3226 | puts_filtered (" - "); | |
3227 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); | |
3228 | puts_filtered ("\n"); | |
3229 | ||
3230 | nmapped++; | |
3231 | } | |
3232 | } | |
c906108c | 3233 | if (nmapped == 0) |
a3f17187 | 3234 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3235 | } |
3236 | ||
3237 | /* Function: map_overlay_command | |
3238 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3239 | ||
5d3055ad | 3240 | static void |
2cf311eb | 3241 | map_overlay_command (const char *args, int from_tty) |
c906108c | 3242 | { |
c5aa993b JM |
3243 | struct objfile *objfile, *objfile2; |
3244 | struct obj_section *sec, *sec2; | |
c906108c SS |
3245 | |
3246 | if (!overlay_debugging) | |
3e43a32a MS |
3247 | error (_("Overlay debugging not enabled. Use " |
3248 | "either the 'overlay auto' or\n" | |
3249 | "the 'overlay manual' command.")); | |
c906108c SS |
3250 | |
3251 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3252 | error (_("Argument required: name of an overlay section")); |
c906108c | 3253 | |
c378eb4e | 3254 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3255 | ALL_OBJSECTIONS (objfile, sec) |
3256 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3257 | { |
c378eb4e | 3258 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3259 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3260 | continue; /* not an overlay section */ |
3261 | ||
c378eb4e | 3262 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3263 | sec->ovly_mapped = 1; |
3264 | ||
3265 | /* Next, make a pass and unmap any sections that are | |
3266 | overlapped by this new section: */ | |
3267 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3268 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3269 | { |
3270 | if (info_verbose) | |
a3f17187 | 3271 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3272 | bfd_section_name (objfile->obfd, |
3273 | sec2->the_bfd_section)); | |
c378eb4e | 3274 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3275 | } |
3276 | return; | |
3277 | } | |
8a3fe4f8 | 3278 | error (_("No overlay section called %s"), args); |
c906108c SS |
3279 | } |
3280 | ||
3281 | /* Function: unmap_overlay_command | |
5417f6dc | 3282 | Mark the overlay section as unmapped |
c906108c SS |
3283 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3284 | ||
5d3055ad | 3285 | static void |
2cf311eb | 3286 | unmap_overlay_command (const char *args, int from_tty) |
c906108c | 3287 | { |
c5aa993b | 3288 | struct objfile *objfile; |
7a270e0c | 3289 | struct obj_section *sec = NULL; |
c906108c SS |
3290 | |
3291 | if (!overlay_debugging) | |
3e43a32a MS |
3292 | error (_("Overlay debugging not enabled. " |
3293 | "Use either the 'overlay auto' or\n" | |
3294 | "the 'overlay manual' command.")); | |
c906108c SS |
3295 | |
3296 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3297 | error (_("Argument required: name of an overlay section")); |
c906108c | 3298 | |
c378eb4e | 3299 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3300 | ALL_OBJSECTIONS (objfile, sec) |
3301 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3302 | { |
3303 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3304 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3305 | sec->ovly_mapped = 0; |
3306 | return; | |
3307 | } | |
8a3fe4f8 | 3308 | error (_("No overlay section called %s"), args); |
c906108c SS |
3309 | } |
3310 | ||
3311 | /* Function: overlay_auto_command | |
3312 | A utility command to turn on overlay debugging. | |
c378eb4e | 3313 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3314 | |
3315 | static void | |
2cf311eb | 3316 | overlay_auto_command (const char *args, int from_tty) |
c906108c | 3317 | { |
d874f1e2 | 3318 | overlay_debugging = ovly_auto; |
1900040c | 3319 | enable_overlay_breakpoints (); |
c906108c | 3320 | if (info_verbose) |
a3f17187 | 3321 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3322 | } |
3323 | ||
3324 | /* Function: overlay_manual_command | |
3325 | A utility command to turn on overlay debugging. | |
c378eb4e | 3326 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3327 | |
3328 | static void | |
2cf311eb | 3329 | overlay_manual_command (const char *args, int from_tty) |
c906108c | 3330 | { |
d874f1e2 | 3331 | overlay_debugging = ovly_on; |
1900040c | 3332 | disable_overlay_breakpoints (); |
c906108c | 3333 | if (info_verbose) |
a3f17187 | 3334 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3335 | } |
3336 | ||
3337 | /* Function: overlay_off_command | |
3338 | A utility command to turn on overlay debugging. | |
c378eb4e | 3339 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3340 | |
3341 | static void | |
2cf311eb | 3342 | overlay_off_command (const char *args, int from_tty) |
c906108c | 3343 | { |
d874f1e2 | 3344 | overlay_debugging = ovly_off; |
1900040c | 3345 | disable_overlay_breakpoints (); |
c906108c | 3346 | if (info_verbose) |
a3f17187 | 3347 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3348 | } |
3349 | ||
3350 | static void | |
2cf311eb | 3351 | overlay_load_command (const char *args, int from_tty) |
c906108c | 3352 | { |
e17c207e UW |
3353 | struct gdbarch *gdbarch = get_current_arch (); |
3354 | ||
3355 | if (gdbarch_overlay_update_p (gdbarch)) | |
3356 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3357 | else |
8a3fe4f8 | 3358 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3359 | } |
3360 | ||
3361 | /* Function: overlay_command | |
c378eb4e | 3362 | A place-holder for a mis-typed command. */ |
c906108c | 3363 | |
c378eb4e | 3364 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3365 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3366 | |
3367 | static void | |
981a3fb3 | 3368 | overlay_command (const char *args, int from_tty) |
c906108c | 3369 | { |
c5aa993b | 3370 | printf_unfiltered |
c906108c | 3371 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
635c7e8a | 3372 | help_list (overlaylist, "overlay ", all_commands, gdb_stdout); |
c906108c SS |
3373 | } |
3374 | ||
c906108c SS |
3375 | /* Target Overlays for the "Simplest" overlay manager: |
3376 | ||
5417f6dc RM |
3377 | This is GDB's default target overlay layer. It works with the |
3378 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3379 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3380 | so targets that use a different runtime overlay manager can |
c906108c SS |
3381 | substitute their own overlay_update function and take over the |
3382 | function pointer. | |
3383 | ||
3384 | The overlay_update function pokes around in the target's data structures | |
3385 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3386 | this information. | |
3387 | ||
3388 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3389 | unsigned _novlys; /# number of overlay sections #/ |
3390 | unsigned _ovly_table[_novlys][4] = { | |
438e1e42 | 3391 | {VMA, OSIZE, LMA, MAPPED}, /# one entry per overlay section #/ |
c5aa993b JM |
3392 | {..., ..., ..., ...}, |
3393 | } | |
3394 | unsigned _novly_regions; /# number of overlay regions #/ | |
3395 | unsigned _ovly_region_table[_novly_regions][3] = { | |
438e1e42 | 3396 | {VMA, OSIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ |
c5aa993b JM |
3397 | {..., ..., ...}, |
3398 | } | |
c906108c SS |
3399 | These functions will attempt to update GDB's mappedness state in the |
3400 | symbol section table, based on the target's mappedness state. | |
3401 | ||
3402 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3403 | attempt to detect when the cached copy is invalidated. The main | |
3404 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3405 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3406 | the target (whenever possible). */ |
c906108c SS |
3407 | |
3408 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3409 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3410 | static unsigned cache_novlys = 0; |
c906108c | 3411 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3412 | enum ovly_index |
3413 | { | |
438e1e42 | 3414 | VMA, OSIZE, LMA, MAPPED |
c5aa993b | 3415 | }; |
c906108c | 3416 | |
c378eb4e | 3417 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3418 | |
c906108c | 3419 | static void |
fba45db2 | 3420 | simple_free_overlay_table (void) |
c906108c SS |
3421 | { |
3422 | if (cache_ovly_table) | |
b8c9b27d | 3423 | xfree (cache_ovly_table); |
c5aa993b | 3424 | cache_novlys = 0; |
c906108c SS |
3425 | cache_ovly_table = NULL; |
3426 | cache_ovly_table_base = 0; | |
3427 | } | |
3428 | ||
9216df95 | 3429 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3430 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3431 | |
c906108c | 3432 | static void |
9216df95 | 3433 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3434 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3435 | { |
c378eb4e | 3436 | /* FIXME (alloca): Not safe if array is very large. */ |
224c3ddb | 3437 | gdb_byte *buf = (gdb_byte *) alloca (len * size); |
c5aa993b | 3438 | int i; |
c906108c | 3439 | |
9216df95 | 3440 | read_memory (memaddr, buf, len * size); |
c906108c | 3441 | for (i = 0; i < len; i++) |
e17a4113 | 3442 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3443 | } |
3444 | ||
3445 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3446 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3447 | |
c5aa993b | 3448 | static int |
fba45db2 | 3449 | simple_read_overlay_table (void) |
c906108c | 3450 | { |
3b7344d5 | 3451 | struct bound_minimal_symbol novlys_msym; |
7c7b6655 | 3452 | struct bound_minimal_symbol ovly_table_msym; |
9216df95 UW |
3453 | struct gdbarch *gdbarch; |
3454 | int word_size; | |
e17a4113 | 3455 | enum bfd_endian byte_order; |
c906108c SS |
3456 | |
3457 | simple_free_overlay_table (); | |
9b27852e | 3458 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
3b7344d5 | 3459 | if (! novlys_msym.minsym) |
c906108c | 3460 | { |
8a3fe4f8 | 3461 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3462 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3463 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3464 | return 0; |
c906108c | 3465 | } |
0d43edd1 | 3466 | |
7c7b6655 TT |
3467 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3468 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3469 | { |
8a3fe4f8 | 3470 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3471 | "`_ovly_table' array\n" |
8a3fe4f8 | 3472 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3473 | return 0; |
3474 | } | |
3475 | ||
7c7b6655 | 3476 | gdbarch = get_objfile_arch (ovly_table_msym.objfile); |
9216df95 | 3477 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3478 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3479 | |
77e371c0 TT |
3480 | cache_novlys = read_memory_integer (BMSYMBOL_VALUE_ADDRESS (novlys_msym), |
3481 | 4, byte_order); | |
0d43edd1 | 3482 | cache_ovly_table |
224c3ddb | 3483 | = (unsigned int (*)[4]) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); |
77e371c0 | 3484 | cache_ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym); |
0d43edd1 | 3485 | read_target_long_array (cache_ovly_table_base, |
777ea8f1 | 3486 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3487 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3488 | |
c5aa993b | 3489 | return 1; /* SUCCESS */ |
c906108c SS |
3490 | } |
3491 | ||
5417f6dc | 3492 | /* Function: simple_overlay_update_1 |
c906108c SS |
3493 | A helper function for simple_overlay_update. Assuming a cached copy |
3494 | of _ovly_table exists, look through it to find an entry whose vma, | |
3495 | lma and size match those of OSECT. Re-read the entry and make sure | |
3496 | it still matches OSECT (else the table may no longer be valid). | |
3497 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3498 | success, 0 for failure. */ | |
3499 | ||
3500 | static int | |
fba45db2 | 3501 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c | 3502 | { |
764c99c1 | 3503 | int i; |
fbd35540 MS |
3504 | bfd *obfd = osect->objfile->obfd; |
3505 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3506 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3507 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3508 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3509 | |
c906108c | 3510 | for (i = 0; i < cache_novlys; i++) |
fbd35540 | 3511 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3512 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c | 3513 | { |
9216df95 UW |
3514 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3515 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3516 | 4, word_size, byte_order); |
fbd35540 | 3517 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3518 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c SS |
3519 | { |
3520 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3521 | return 1; | |
3522 | } | |
c378eb4e | 3523 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3524 | return 0; |
3525 | } | |
3526 | return 0; | |
3527 | } | |
3528 | ||
3529 | /* Function: simple_overlay_update | |
5417f6dc RM |
3530 | If OSECT is NULL, then update all sections' mapped state |
3531 | (after re-reading the entire target _ovly_table). | |
3532 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3533 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3534 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3535 | re-read the entire cache, and go ahead and update all sections. */ |
3536 | ||
1c772458 | 3537 | void |
fba45db2 | 3538 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3539 | { |
c5aa993b | 3540 | struct objfile *objfile; |
c906108c | 3541 | |
c378eb4e | 3542 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3543 | if (osect) |
c378eb4e | 3544 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3545 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3546 | { |
3547 | /* Does its cached location match what's currently in the | |
3548 | symtab? */ | |
3b7344d5 | 3549 | struct bound_minimal_symbol minsym |
9cc89665 MS |
3550 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
3551 | ||
3b7344d5 | 3552 | if (minsym.minsym == NULL) |
9cc89665 MS |
3553 | error (_("Error reading inferior's overlay table: couldn't " |
3554 | "find `_ovly_table' array\n" | |
3555 | "in inferior. Use `overlay manual' mode.")); | |
3556 | ||
77e371c0 | 3557 | if (cache_ovly_table_base == BMSYMBOL_VALUE_ADDRESS (minsym)) |
9cc89665 MS |
3558 | /* Then go ahead and try to look up this single section in |
3559 | the cache. */ | |
3560 | if (simple_overlay_update_1 (osect)) | |
3561 | /* Found it! We're done. */ | |
3562 | return; | |
3563 | } | |
c906108c SS |
3564 | |
3565 | /* Cached table no good: need to read the entire table anew. | |
3566 | Or else we want all the sections, in which case it's actually | |
3567 | more efficient to read the whole table in one block anyway. */ | |
3568 | ||
0d43edd1 JB |
3569 | if (! simple_read_overlay_table ()) |
3570 | return; | |
3571 | ||
c378eb4e | 3572 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3573 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3574 | if (section_is_overlay (osect)) |
c5aa993b | 3575 | { |
764c99c1 | 3576 | int i; |
fbd35540 MS |
3577 | bfd *obfd = osect->objfile->obfd; |
3578 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3579 | |
c5aa993b | 3580 | for (i = 0; i < cache_novlys; i++) |
fbd35540 | 3581 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3582 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c378eb4e | 3583 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3584 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3585 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3586 | } |
3587 | } | |
c906108c SS |
3588 | } |
3589 | ||
086df311 DJ |
3590 | /* Set the output sections and output offsets for section SECTP in |
3591 | ABFD. The relocation code in BFD will read these offsets, so we | |
3592 | need to be sure they're initialized. We map each section to itself, | |
3593 | with no offset; this means that SECTP->vma will be honored. */ | |
3594 | ||
3595 | static void | |
3596 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3597 | { | |
3598 | sectp->output_section = sectp; | |
3599 | sectp->output_offset = 0; | |
3600 | } | |
3601 | ||
ac8035ab TG |
3602 | /* Default implementation for sym_relocate. */ |
3603 | ||
ac8035ab TG |
3604 | bfd_byte * |
3605 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3606 | bfd_byte *buf) | |
3607 | { | |
3019eac3 DE |
3608 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3609 | DWO file. */ | |
3610 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3611 | |
3612 | /* We're only interested in sections with relocation | |
3613 | information. */ | |
3614 | if ((sectp->flags & SEC_RELOC) == 0) | |
3615 | return NULL; | |
3616 | ||
3617 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3618 | all sections begin at 0. */ | |
3619 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3620 | ||
3621 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3622 | } | |
3623 | ||
086df311 DJ |
3624 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3625 | contents are stored in BUF if it is non-NULL, or returned in a | |
3626 | malloc'd buffer otherwise. | |
3627 | ||
3628 | For some platforms and debug info formats, shared libraries contain | |
3629 | relocations against the debug sections (particularly for DWARF-2; | |
3630 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3631 | the version of the linker in use). Also, ELF object files naturally | |
3632 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3633 | the relocations in order to get the locations of symbols correct. |
3634 | Another example that may require relocation processing, is the | |
3635 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3636 | debug section. */ | |
086df311 DJ |
3637 | |
3638 | bfd_byte * | |
ac8035ab TG |
3639 | symfile_relocate_debug_section (struct objfile *objfile, |
3640 | asection *sectp, bfd_byte *buf) | |
086df311 | 3641 | { |
ac8035ab | 3642 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3643 | |
ac8035ab | 3644 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3645 | } |
c906108c | 3646 | |
31d99776 DJ |
3647 | struct symfile_segment_data * |
3648 | get_symfile_segment_data (bfd *abfd) | |
3649 | { | |
00b5771c | 3650 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3651 | |
3652 | if (sf == NULL) | |
3653 | return NULL; | |
3654 | ||
3655 | return sf->sym_segments (abfd); | |
3656 | } | |
3657 | ||
3658 | void | |
3659 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3660 | { | |
3661 | xfree (data->segment_bases); | |
3662 | xfree (data->segment_sizes); | |
3663 | xfree (data->segment_info); | |
3664 | xfree (data); | |
3665 | } | |
3666 | ||
28c32713 JB |
3667 | /* Given: |
3668 | - DATA, containing segment addresses from the object file ABFD, and | |
3669 | the mapping from ABFD's sections onto the segments that own them, | |
3670 | and | |
3671 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3672 | segment addresses reported by the target, | |
3673 | store the appropriate offsets for each section in OFFSETS. | |
3674 | ||
3675 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3676 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3677 | ||
8d385431 DJ |
3678 | If there are more entries, then ignore the extra. The target may |
3679 | not be able to distinguish between an empty data segment and a | |
3680 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3681 | |
31d99776 | 3682 | int |
3189cb12 DE |
3683 | symfile_map_offsets_to_segments (bfd *abfd, |
3684 | const struct symfile_segment_data *data, | |
31d99776 DJ |
3685 | struct section_offsets *offsets, |
3686 | int num_segment_bases, | |
3687 | const CORE_ADDR *segment_bases) | |
3688 | { | |
3689 | int i; | |
3690 | asection *sect; | |
3691 | ||
28c32713 JB |
3692 | /* It doesn't make sense to call this function unless you have some |
3693 | segment base addresses. */ | |
202b96c1 | 3694 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3695 | |
31d99776 DJ |
3696 | /* If we do not have segment mappings for the object file, we |
3697 | can not relocate it by segments. */ | |
3698 | gdb_assert (data != NULL); | |
3699 | gdb_assert (data->num_segments > 0); | |
3700 | ||
31d99776 DJ |
3701 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3702 | { | |
31d99776 DJ |
3703 | int which = data->segment_info[i]; |
3704 | ||
28c32713 JB |
3705 | gdb_assert (0 <= which && which <= data->num_segments); |
3706 | ||
3707 | /* Don't bother computing offsets for sections that aren't | |
3708 | loaded as part of any segment. */ | |
3709 | if (! which) | |
3710 | continue; | |
3711 | ||
3712 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3713 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3714 | if (which > num_segment_bases) |
28c32713 | 3715 | which = num_segment_bases; |
31d99776 | 3716 | |
28c32713 JB |
3717 | offsets->offsets[i] = (segment_bases[which - 1] |
3718 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3719 | } |
3720 | ||
3721 | return 1; | |
3722 | } | |
3723 | ||
3724 | static void | |
3725 | symfile_find_segment_sections (struct objfile *objfile) | |
3726 | { | |
3727 | bfd *abfd = objfile->obfd; | |
3728 | int i; | |
3729 | asection *sect; | |
3730 | struct symfile_segment_data *data; | |
3731 | ||
3732 | data = get_symfile_segment_data (objfile->obfd); | |
3733 | if (data == NULL) | |
3734 | return; | |
3735 | ||
3736 | if (data->num_segments != 1 && data->num_segments != 2) | |
3737 | { | |
3738 | free_symfile_segment_data (data); | |
3739 | return; | |
3740 | } | |
3741 | ||
3742 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3743 | { | |
31d99776 DJ |
3744 | int which = data->segment_info[i]; |
3745 | ||
3746 | if (which == 1) | |
3747 | { | |
3748 | if (objfile->sect_index_text == -1) | |
3749 | objfile->sect_index_text = sect->index; | |
3750 | ||
3751 | if (objfile->sect_index_rodata == -1) | |
3752 | objfile->sect_index_rodata = sect->index; | |
3753 | } | |
3754 | else if (which == 2) | |
3755 | { | |
3756 | if (objfile->sect_index_data == -1) | |
3757 | objfile->sect_index_data = sect->index; | |
3758 | ||
3759 | if (objfile->sect_index_bss == -1) | |
3760 | objfile->sect_index_bss = sect->index; | |
3761 | } | |
3762 | } | |
3763 | ||
3764 | free_symfile_segment_data (data); | |
3765 | } | |
3766 | ||
76ad5e1e NB |
3767 | /* Listen for free_objfile events. */ |
3768 | ||
3769 | static void | |
3770 | symfile_free_objfile (struct objfile *objfile) | |
3771 | { | |
c33b2f12 MM |
3772 | /* Remove the target sections owned by this objfile. */ |
3773 | if (objfile != NULL) | |
76ad5e1e NB |
3774 | remove_target_sections ((void *) objfile); |
3775 | } | |
3776 | ||
540c2971 DE |
3777 | /* Wrapper around the quick_symbol_functions expand_symtabs_matching "method". |
3778 | Expand all symtabs that match the specified criteria. | |
3779 | See quick_symbol_functions.expand_symtabs_matching for details. */ | |
3780 | ||
3781 | void | |
14bc53a8 PA |
3782 | expand_symtabs_matching |
3783 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
b5ec771e | 3784 | const lookup_name_info &lookup_name, |
14bc53a8 PA |
3785 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
3786 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
3787 | enum search_domain kind) | |
540c2971 DE |
3788 | { |
3789 | struct objfile *objfile; | |
3790 | ||
3791 | ALL_OBJFILES (objfile) | |
3792 | { | |
3793 | if (objfile->sf) | |
bb4142cf | 3794 | objfile->sf->qf->expand_symtabs_matching (objfile, file_matcher, |
b5ec771e | 3795 | lookup_name, |
276d885b | 3796 | symbol_matcher, |
14bc53a8 | 3797 | expansion_notify, kind); |
540c2971 DE |
3798 | } |
3799 | } | |
3800 | ||
3801 | /* Wrapper around the quick_symbol_functions map_symbol_filenames "method". | |
3802 | Map function FUN over every file. | |
3803 | See quick_symbol_functions.map_symbol_filenames for details. */ | |
3804 | ||
3805 | void | |
bb4142cf DE |
3806 | map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
3807 | int need_fullname) | |
540c2971 DE |
3808 | { |
3809 | struct objfile *objfile; | |
3810 | ||
3811 | ALL_OBJFILES (objfile) | |
3812 | { | |
3813 | if (objfile->sf) | |
3814 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data, | |
3815 | need_fullname); | |
3816 | } | |
3817 | } | |
3818 | ||
32fa66eb SM |
3819 | #if GDB_SELF_TEST |
3820 | ||
3821 | namespace selftests { | |
3822 | namespace filename_language { | |
3823 | ||
32fa66eb SM |
3824 | static void test_filename_language () |
3825 | { | |
3826 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3827 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3828 | |
3829 | /* Test deducing an unknown extension. */ | |
3830 | language lang = deduce_language_from_filename ("myfile.blah"); | |
3831 | SELF_CHECK (lang == language_unknown); | |
3832 | ||
3833 | /* Test deducing a known extension. */ | |
3834 | lang = deduce_language_from_filename ("myfile.c"); | |
3835 | SELF_CHECK (lang == language_c); | |
3836 | ||
3837 | /* Test adding a new extension using the internal API. */ | |
3838 | add_filename_language (".blah", language_pascal); | |
3839 | lang = deduce_language_from_filename ("myfile.blah"); | |
3840 | SELF_CHECK (lang == language_pascal); | |
3841 | } | |
3842 | ||
3843 | static void | |
3844 | test_set_ext_lang_command () | |
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 | /* Confirm that the .hello extension is not known. */ | |
3850 | language lang = deduce_language_from_filename ("cake.hello"); | |
3851 | SELF_CHECK (lang == language_unknown); | |
3852 | ||
3853 | /* Test adding a new extension using the CLI command. */ | |
3854 | gdb::unique_xmalloc_ptr<char> args_holder (xstrdup (".hello rust")); | |
3855 | ext_args = args_holder.get (); | |
3856 | set_ext_lang_command (NULL, 1, NULL); | |
3857 | ||
3858 | lang = deduce_language_from_filename ("cake.hello"); | |
3859 | SELF_CHECK (lang == language_rust); | |
3860 | ||
3861 | /* Test overriding an existing extension using the CLI command. */ | |
593e3209 | 3862 | int size_before = filename_language_table.size (); |
32fa66eb SM |
3863 | args_holder.reset (xstrdup (".hello pascal")); |
3864 | ext_args = args_holder.get (); | |
3865 | set_ext_lang_command (NULL, 1, NULL); | |
593e3209 | 3866 | int size_after = filename_language_table.size (); |
32fa66eb SM |
3867 | |
3868 | lang = deduce_language_from_filename ("cake.hello"); | |
3869 | SELF_CHECK (lang == language_pascal); | |
3870 | SELF_CHECK (size_before == size_after); | |
3871 | } | |
3872 | ||
3873 | } /* namespace filename_language */ | |
3874 | } /* namespace selftests */ | |
3875 | ||
3876 | #endif /* GDB_SELF_TEST */ | |
3877 | ||
c906108c | 3878 | void |
fba45db2 | 3879 | _initialize_symfile (void) |
c906108c SS |
3880 | { |
3881 | struct cmd_list_element *c; | |
c5aa993b | 3882 | |
76ad5e1e NB |
3883 | observer_attach_free_objfile (symfile_free_objfile); |
3884 | ||
7f0f8ac8 | 3885 | #define READNOW_HELP \ |
8ca2f0b9 TT |
3886 | "The '-readnow' option will cause GDB to read the entire symbol file\n\ |
3887 | immediately. This makes the command slower, but may make future operations\n\ | |
7f0f8ac8 | 3888 | faster." |
8ca2f0b9 | 3889 | |
1a966eab AC |
3890 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3891 | Load symbol table from executable file FILE.\n\ | |
7f0f8ac8 | 3892 | Usage: symbol-file [-readnow] FILE\n\ |
c906108c | 3893 | The `file' command can also load symbol tables, as well as setting the file\n\ |
7f0f8ac8 | 3894 | to execute.\n" READNOW_HELP), &cmdlist); |
5ba2abeb | 3895 | set_cmd_completer (c, filename_completer); |
c906108c | 3896 | |
1a966eab | 3897 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3898 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
7f0f8ac8 | 3899 | Usage: add-symbol-file FILE ADDR [-readnow | -s SECT-NAME SECT-ADDR]...\n\ |
02ca603a TT |
3900 | ADDR is the starting address of the file's text.\n\ |
3901 | Each '-s' argument provides a section name and address, and\n\ | |
db162d44 | 3902 | should be specified if the data and bss segments are not contiguous\n\ |
8ca2f0b9 | 3903 | with the text. SECT-NAME is a section name to be loaded at SECT-ADDR.\n" |
7f0f8ac8 | 3904 | READNOW_HELP), |
c906108c | 3905 | &cmdlist); |
5ba2abeb | 3906 | set_cmd_completer (c, filename_completer); |
c906108c | 3907 | |
63644780 NB |
3908 | c = add_cmd ("remove-symbol-file", class_files, |
3909 | remove_symbol_file_command, _("\ | |
3910 | Remove a symbol file added via the add-symbol-file command.\n\ | |
3911 | Usage: remove-symbol-file FILENAME\n\ | |
3912 | remove-symbol-file -a ADDRESS\n\ | |
3913 | The file to remove can be identified by its filename or by an address\n\ | |
3914 | that lies within the boundaries of this symbol file in memory."), | |
3915 | &cmdlist); | |
3916 | ||
1a966eab AC |
3917 | c = add_cmd ("load", class_files, load_command, _("\ |
3918 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd | 3919 | for access from GDB.\n\ |
8ca2f0b9 | 3920 | Usage: load [FILE] [OFFSET]\n\ |
5cf30ebf LM |
3921 | An optional load OFFSET may also be given as a literal address.\n\ |
3922 | When OFFSET is provided, FILE must also be provided. FILE can be provided\n\ | |
8ca2f0b9 | 3923 | on its own."), &cmdlist); |
5ba2abeb | 3924 | set_cmd_completer (c, filename_completer); |
c906108c | 3925 | |
c5aa993b | 3926 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3927 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3928 | "overlay ", 0, &cmdlist); |
3929 | ||
3930 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3931 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3932 | ||
c5aa993b | 3933 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3934 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3935 | |
c5aa993b | 3936 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3937 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3938 | |
c5aa993b | 3939 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3940 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3941 | |
c5aa993b | 3942 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3943 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3944 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3945 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3946 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3947 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3948 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3949 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3950 | |
3951 | /* Filename extension to source language lookup table: */ | |
26c41df3 AC |
3952 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3953 | &ext_args, _("\ | |
3954 | Set mapping between filename extension and source language."), _("\ | |
3955 | Show mapping between filename extension and source language."), _("\ | |
3956 | Usage: set extension-language .foo bar"), | |
3957 | set_ext_lang_command, | |
920d2a44 | 3958 | show_ext_args, |
26c41df3 | 3959 | &setlist, &showlist); |
c906108c | 3960 | |
c5aa993b | 3961 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3962 | _("All filename extensions associated with a source language.")); |
917317f4 | 3963 | |
525226b5 AC |
3964 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3965 | &debug_file_directory, _("\ | |
24ddea62 JK |
3966 | Set the directories where separate debug symbols are searched for."), _("\ |
3967 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3968 | Separate debug symbols are first searched for in the same\n\ |
3969 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3970 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3971 | each global debug-file-directory component prepended."), |
525226b5 | 3972 | NULL, |
920d2a44 | 3973 | show_debug_file_directory, |
525226b5 | 3974 | &setlist, &showlist); |
770e7fc7 DE |
3975 | |
3976 | add_setshow_enum_cmd ("symbol-loading", no_class, | |
3977 | print_symbol_loading_enums, &print_symbol_loading, | |
3978 | _("\ | |
3979 | Set printing of symbol loading messages."), _("\ | |
3980 | Show printing of symbol loading messages."), _("\ | |
3981 | off == turn all messages off\n\ | |
3982 | brief == print messages for the executable,\n\ | |
3983 | and brief messages for shared libraries\n\ | |
3984 | full == print messages for the executable,\n\ | |
3985 | and messages for each shared library."), | |
3986 | NULL, | |
3987 | NULL, | |
3988 | &setprintlist, &showprintlist); | |
c4dcb155 SM |
3989 | |
3990 | add_setshow_boolean_cmd ("separate-debug-file", no_class, | |
3991 | &separate_debug_file_debug, _("\ | |
3992 | Set printing of separate debug info file search debug."), _("\ | |
3993 | Show printing of separate debug info file search debug."), _("\ | |
3994 | When on, GDB prints the searched locations while looking for separate debug \ | |
3995 | info files."), NULL, NULL, &setdebuglist, &showdebuglist); | |
32fa66eb SM |
3996 | |
3997 | #if GDB_SELF_TEST | |
3998 | selftests::register_test | |
3999 | ("filename_language", selftests::filename_language::test_filename_language); | |
4000 | selftests::register_test | |
4001 | ("set_ext_lang_command", | |
4002 | selftests::filename_language::test_set_ext_lang_command); | |
4003 | #endif | |
c906108c | 4004 | } |