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 | |
a14ed312 | 87 | static void load_command (char *, int); |
c906108c | 88 | |
ecf45d2c | 89 | static void symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
b15cc25c | 90 | objfile_flags flags); |
d7db6da9 | 91 | |
00b5771c | 92 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 93 | |
a14ed312 | 94 | static void overlay_invalidate_all (void); |
c906108c | 95 | |
a14ed312 | 96 | static void simple_free_overlay_table (void); |
c906108c | 97 | |
e17a4113 UW |
98 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
99 | enum bfd_endian); | |
c906108c | 100 | |
a14ed312 | 101 | static int simple_read_overlay_table (void); |
c906108c | 102 | |
a14ed312 | 103 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 104 | |
a14ed312 | 105 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 106 | |
31d99776 DJ |
107 | static void symfile_find_segment_sections (struct objfile *objfile); |
108 | ||
c906108c SS |
109 | /* List of all available sym_fns. On gdb startup, each object file reader |
110 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 111 | prepared to read. */ |
c906108c | 112 | |
905014d7 | 113 | struct registered_sym_fns |
c256e171 | 114 | { |
905014d7 SM |
115 | registered_sym_fns (bfd_flavour sym_flavour_, const struct sym_fns *sym_fns_) |
116 | : sym_flavour (sym_flavour_), sym_fns (sym_fns_) | |
117 | {} | |
118 | ||
c256e171 DE |
119 | /* BFD flavour that we handle. */ |
120 | enum bfd_flavour sym_flavour; | |
121 | ||
122 | /* The "vtable" of symbol functions. */ | |
123 | const struct sym_fns *sym_fns; | |
905014d7 | 124 | }; |
c256e171 | 125 | |
905014d7 | 126 | static std::vector<registered_sym_fns> symtab_fns; |
c906108c | 127 | |
770e7fc7 DE |
128 | /* Values for "set print symbol-loading". */ |
129 | ||
130 | const char print_symbol_loading_off[] = "off"; | |
131 | const char print_symbol_loading_brief[] = "brief"; | |
132 | const char print_symbol_loading_full[] = "full"; | |
133 | static const char *print_symbol_loading_enums[] = | |
134 | { | |
135 | print_symbol_loading_off, | |
136 | print_symbol_loading_brief, | |
137 | print_symbol_loading_full, | |
138 | NULL | |
139 | }; | |
140 | static const char *print_symbol_loading = print_symbol_loading_full; | |
141 | ||
b7209cb4 FF |
142 | /* If non-zero, shared library symbols will be added automatically |
143 | when the inferior is created, new libraries are loaded, or when | |
144 | attaching to the inferior. This is almost always what users will | |
145 | want to have happen; but for very large programs, the startup time | |
146 | will be excessive, and so if this is a problem, the user can clear | |
147 | this flag and then add the shared library symbols as needed. Note | |
148 | that there is a potential for confusion, since if the shared | |
c906108c | 149 | library symbols are not loaded, commands like "info fun" will *not* |
0d14a781 | 150 | report all the functions that are actually present. */ |
c906108c SS |
151 | |
152 | int auto_solib_add = 1; | |
c906108c | 153 | \f |
c5aa993b | 154 | |
770e7fc7 DE |
155 | /* Return non-zero if symbol-loading messages should be printed. |
156 | FROM_TTY is the standard from_tty argument to gdb commands. | |
157 | If EXEC is non-zero the messages are for the executable. | |
158 | Otherwise, messages are for shared libraries. | |
159 | If FULL is non-zero then the caller is printing a detailed message. | |
160 | E.g., the message includes the shared library name. | |
161 | Otherwise, the caller is printing a brief "summary" message. */ | |
162 | ||
163 | int | |
164 | print_symbol_loading_p (int from_tty, int exec, int full) | |
165 | { | |
166 | if (!from_tty && !info_verbose) | |
167 | return 0; | |
168 | ||
169 | if (exec) | |
170 | { | |
171 | /* We don't check FULL for executables, there are few such | |
172 | messages, therefore brief == full. */ | |
173 | return print_symbol_loading != print_symbol_loading_off; | |
174 | } | |
175 | if (full) | |
176 | return print_symbol_loading == print_symbol_loading_full; | |
177 | return print_symbol_loading == print_symbol_loading_brief; | |
178 | } | |
179 | ||
0d14a781 | 180 | /* True if we are reading a symbol table. */ |
c906108c SS |
181 | |
182 | int currently_reading_symtab = 0; | |
183 | ||
ccefe4c4 TT |
184 | /* Increment currently_reading_symtab and return a cleanup that can be |
185 | used to decrement it. */ | |
3b7bacac | 186 | |
c83dd867 | 187 | scoped_restore_tmpl<int> |
ccefe4c4 | 188 | increment_reading_symtab (void) |
c906108c | 189 | { |
c83dd867 TT |
190 | gdb_assert (currently_reading_symtab >= 0); |
191 | return make_scoped_restore (¤tly_reading_symtab, | |
192 | currently_reading_symtab + 1); | |
c906108c SS |
193 | } |
194 | ||
5417f6dc RM |
195 | /* Remember the lowest-addressed loadable section we've seen. |
196 | This function is called via bfd_map_over_sections. | |
c906108c SS |
197 | |
198 | In case of equal vmas, the section with the largest size becomes the | |
199 | lowest-addressed loadable section. | |
200 | ||
201 | If the vmas and sizes are equal, the last section is considered the | |
202 | lowest-addressed loadable section. */ | |
203 | ||
204 | void | |
4efb68b1 | 205 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 206 | { |
c5aa993b | 207 | asection **lowest = (asection **) obj; |
c906108c | 208 | |
eb73e134 | 209 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
210 | return; |
211 | if (!*lowest) | |
212 | *lowest = sect; /* First loadable section */ | |
213 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
214 | *lowest = sect; /* A lower loadable section */ | |
215 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
216 | && (bfd_section_size (abfd, (*lowest)) | |
217 | <= bfd_section_size (abfd, sect))) | |
218 | *lowest = sect; | |
219 | } | |
220 | ||
d76488d8 TT |
221 | /* Create a new section_addr_info, with room for NUM_SECTIONS. The |
222 | new object's 'num_sections' field is set to 0; it must be updated | |
223 | by the caller. */ | |
a39a16c4 MM |
224 | |
225 | struct section_addr_info * | |
226 | alloc_section_addr_info (size_t num_sections) | |
227 | { | |
228 | struct section_addr_info *sap; | |
229 | size_t size; | |
230 | ||
231 | size = (sizeof (struct section_addr_info) | |
232 | + sizeof (struct other_sections) * (num_sections - 1)); | |
233 | sap = (struct section_addr_info *) xmalloc (size); | |
234 | memset (sap, 0, size); | |
a39a16c4 MM |
235 | |
236 | return sap; | |
237 | } | |
62557bbc KB |
238 | |
239 | /* Build (allocate and populate) a section_addr_info struct from | |
c378eb4e | 240 | an existing section table. */ |
62557bbc KB |
241 | |
242 | extern struct section_addr_info * | |
0542c86d PA |
243 | build_section_addr_info_from_section_table (const struct target_section *start, |
244 | const struct target_section *end) | |
62557bbc KB |
245 | { |
246 | struct section_addr_info *sap; | |
0542c86d | 247 | const struct target_section *stp; |
62557bbc KB |
248 | int oidx; |
249 | ||
a39a16c4 | 250 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
251 | |
252 | for (stp = start, oidx = 0; stp != end; stp++) | |
253 | { | |
2b2848e2 DE |
254 | struct bfd_section *asect = stp->the_bfd_section; |
255 | bfd *abfd = asect->owner; | |
256 | ||
257 | if (bfd_get_section_flags (abfd, asect) & (SEC_ALLOC | SEC_LOAD) | |
a39a16c4 | 258 | && oidx < end - start) |
62557bbc KB |
259 | { |
260 | sap->other[oidx].addr = stp->addr; | |
2b2848e2 DE |
261 | sap->other[oidx].name = xstrdup (bfd_section_name (abfd, asect)); |
262 | sap->other[oidx].sectindex = gdb_bfd_section_index (abfd, asect); | |
62557bbc KB |
263 | oidx++; |
264 | } | |
265 | } | |
266 | ||
d76488d8 TT |
267 | sap->num_sections = oidx; |
268 | ||
62557bbc KB |
269 | return sap; |
270 | } | |
271 | ||
82ccf5a5 | 272 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 273 | |
82ccf5a5 JK |
274 | static struct section_addr_info * |
275 | build_section_addr_info_from_bfd (bfd *abfd) | |
089b4803 TG |
276 | { |
277 | struct section_addr_info *sap; | |
278 | int i; | |
279 | struct bfd_section *sec; | |
280 | ||
82ccf5a5 JK |
281 | sap = alloc_section_addr_info (bfd_count_sections (abfd)); |
282 | for (i = 0, sec = abfd->sections; sec != NULL; sec = sec->next) | |
283 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) | |
012836ea | 284 | { |
82ccf5a5 JK |
285 | sap->other[i].addr = bfd_get_section_vma (abfd, sec); |
286 | sap->other[i].name = xstrdup (bfd_get_section_name (abfd, sec)); | |
65cf3563 | 287 | sap->other[i].sectindex = gdb_bfd_section_index (abfd, sec); |
012836ea JK |
288 | i++; |
289 | } | |
d76488d8 TT |
290 | |
291 | sap->num_sections = i; | |
292 | ||
089b4803 TG |
293 | return sap; |
294 | } | |
295 | ||
82ccf5a5 JK |
296 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
297 | ||
298 | struct section_addr_info * | |
299 | build_section_addr_info_from_objfile (const struct objfile *objfile) | |
300 | { | |
301 | struct section_addr_info *sap; | |
302 | int i; | |
303 | ||
304 | /* Before reread_symbols gets rewritten it is not safe to call: | |
305 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
306 | */ | |
307 | sap = build_section_addr_info_from_bfd (objfile->obfd); | |
d76488d8 | 308 | for (i = 0; i < sap->num_sections; i++) |
82ccf5a5 JK |
309 | { |
310 | int sectindex = sap->other[i].sectindex; | |
311 | ||
312 | sap->other[i].addr += objfile->section_offsets->offsets[sectindex]; | |
313 | } | |
314 | return sap; | |
315 | } | |
62557bbc | 316 | |
c378eb4e | 317 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ |
62557bbc KB |
318 | |
319 | extern void | |
320 | free_section_addr_info (struct section_addr_info *sap) | |
321 | { | |
322 | int idx; | |
323 | ||
a39a16c4 | 324 | for (idx = 0; idx < sap->num_sections; idx++) |
d76488d8 | 325 | xfree (sap->other[idx].name); |
b8c9b27d | 326 | xfree (sap); |
62557bbc KB |
327 | } |
328 | ||
e8289572 | 329 | /* Initialize OBJFILE's sect_index_* members. */ |
3b7bacac | 330 | |
e8289572 JB |
331 | static void |
332 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 333 | { |
e8289572 | 334 | asection *sect; |
c906108c | 335 | int i; |
5417f6dc | 336 | |
b8fbeb18 | 337 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 338 | if (sect) |
b8fbeb18 EZ |
339 | objfile->sect_index_text = sect->index; |
340 | ||
341 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 342 | if (sect) |
b8fbeb18 EZ |
343 | objfile->sect_index_data = sect->index; |
344 | ||
345 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 346 | if (sect) |
b8fbeb18 EZ |
347 | objfile->sect_index_bss = sect->index; |
348 | ||
349 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 350 | if (sect) |
b8fbeb18 EZ |
351 | objfile->sect_index_rodata = sect->index; |
352 | ||
bbcd32ad FF |
353 | /* This is where things get really weird... We MUST have valid |
354 | indices for the various sect_index_* members or gdb will abort. | |
355 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
356 | accomodate that. First, check for a file with the standard |
357 | one or two segments. */ | |
358 | ||
359 | symfile_find_segment_sections (objfile); | |
360 | ||
361 | /* Except when explicitly adding symbol files at some address, | |
362 | section_offsets contains nothing but zeros, so it doesn't matter | |
363 | which slot in section_offsets the individual sect_index_* members | |
364 | index into. So if they are all zero, it is safe to just point | |
365 | all the currently uninitialized indices to the first slot. But | |
366 | beware: if this is the main executable, it may be relocated | |
367 | later, e.g. by the remote qOffsets packet, and then this will | |
368 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
369 | |
370 | for (i = 0; i < objfile->num_sections; i++) | |
371 | { | |
372 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
373 | { | |
374 | break; | |
375 | } | |
376 | } | |
377 | if (i == objfile->num_sections) | |
378 | { | |
379 | if (objfile->sect_index_text == -1) | |
380 | objfile->sect_index_text = 0; | |
381 | if (objfile->sect_index_data == -1) | |
382 | objfile->sect_index_data = 0; | |
383 | if (objfile->sect_index_bss == -1) | |
384 | objfile->sect_index_bss = 0; | |
385 | if (objfile->sect_index_rodata == -1) | |
386 | objfile->sect_index_rodata = 0; | |
387 | } | |
b8fbeb18 | 388 | } |
c906108c | 389 | |
c1bd25fd DJ |
390 | /* The arguments to place_section. */ |
391 | ||
392 | struct place_section_arg | |
393 | { | |
394 | struct section_offsets *offsets; | |
395 | CORE_ADDR lowest; | |
396 | }; | |
397 | ||
398 | /* Find a unique offset to use for loadable section SECT if | |
399 | the user did not provide an offset. */ | |
400 | ||
2c0b251b | 401 | static void |
c1bd25fd DJ |
402 | place_section (bfd *abfd, asection *sect, void *obj) |
403 | { | |
19ba03f4 | 404 | struct place_section_arg *arg = (struct place_section_arg *) obj; |
c1bd25fd DJ |
405 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; |
406 | int done; | |
3bd72c6f | 407 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 408 | |
2711e456 DJ |
409 | /* We are only interested in allocated sections. */ |
410 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
411 | return; |
412 | ||
413 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 414 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
415 | return; |
416 | ||
417 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
418 | start_addr = (arg->lowest + align - 1) & -align; |
419 | ||
c1bd25fd DJ |
420 | do { |
421 | asection *cur_sec; | |
c1bd25fd | 422 | |
c1bd25fd DJ |
423 | done = 1; |
424 | ||
425 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
426 | { | |
427 | int indx = cur_sec->index; | |
c1bd25fd DJ |
428 | |
429 | /* We don't need to compare against ourself. */ | |
430 | if (cur_sec == sect) | |
431 | continue; | |
432 | ||
2711e456 DJ |
433 | /* We can only conflict with allocated sections. */ |
434 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
435 | continue; |
436 | ||
437 | /* If the section offset is 0, either the section has not been placed | |
438 | yet, or it was the lowest section placed (in which case LOWEST | |
439 | will be past its end). */ | |
440 | if (offsets[indx] == 0) | |
441 | continue; | |
442 | ||
443 | /* If this section would overlap us, then we must move up. */ | |
444 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
445 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
446 | { | |
447 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
448 | start_addr = (start_addr + align - 1) & -align; | |
449 | done = 0; | |
3bd72c6f | 450 | break; |
c1bd25fd DJ |
451 | } |
452 | ||
453 | /* Otherwise, we appear to be OK. So far. */ | |
454 | } | |
455 | } | |
456 | while (!done); | |
457 | ||
65cf3563 | 458 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
c1bd25fd | 459 | arg->lowest = start_addr + bfd_get_section_size (sect); |
c1bd25fd | 460 | } |
e8289572 | 461 | |
75242ef4 JK |
462 | /* Store struct section_addr_info as prepared (made relative and with SECTINDEX |
463 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS | |
464 | entries. */ | |
e8289572 JB |
465 | |
466 | void | |
75242ef4 JK |
467 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
468 | int num_sections, | |
3189cb12 | 469 | const struct section_addr_info *addrs) |
e8289572 JB |
470 | { |
471 | int i; | |
472 | ||
75242ef4 | 473 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 474 | |
c378eb4e | 475 | /* Now calculate offsets for section that were specified by the caller. */ |
d76488d8 | 476 | for (i = 0; i < addrs->num_sections; i++) |
e8289572 | 477 | { |
3189cb12 | 478 | const struct other_sections *osp; |
e8289572 | 479 | |
75242ef4 | 480 | osp = &addrs->other[i]; |
5488dafb | 481 | if (osp->sectindex == -1) |
e8289572 JB |
482 | continue; |
483 | ||
c378eb4e | 484 | /* Record all sections in offsets. */ |
e8289572 | 485 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 486 | the BFD index. */ |
75242ef4 JK |
487 | section_offsets->offsets[osp->sectindex] = osp->addr; |
488 | } | |
489 | } | |
490 | ||
1276c759 JK |
491 | /* Transform section name S for a name comparison. prelink can split section |
492 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
493 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
494 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
495 | (`.sbss') section has invalid (increased) virtual address. */ | |
496 | ||
497 | static const char * | |
498 | addr_section_name (const char *s) | |
499 | { | |
500 | if (strcmp (s, ".dynbss") == 0) | |
501 | return ".bss"; | |
502 | if (strcmp (s, ".sdynbss") == 0) | |
503 | return ".sbss"; | |
504 | ||
505 | return s; | |
506 | } | |
507 | ||
82ccf5a5 JK |
508 | /* qsort comparator for addrs_section_sort. Sort entries in ascending order by |
509 | their (name, sectindex) pair. sectindex makes the sort by name stable. */ | |
510 | ||
511 | static int | |
512 | addrs_section_compar (const void *ap, const void *bp) | |
513 | { | |
514 | const struct other_sections *a = *((struct other_sections **) ap); | |
515 | const struct other_sections *b = *((struct other_sections **) bp); | |
22e048c9 | 516 | int retval; |
82ccf5a5 | 517 | |
1276c759 | 518 | retval = strcmp (addr_section_name (a->name), addr_section_name (b->name)); |
82ccf5a5 JK |
519 | if (retval) |
520 | return retval; | |
521 | ||
5488dafb | 522 | return a->sectindex - b->sectindex; |
82ccf5a5 JK |
523 | } |
524 | ||
525 | /* Provide sorted array of pointers to sections of ADDRS. The array is | |
526 | terminated by NULL. Caller is responsible to call xfree for it. */ | |
527 | ||
528 | static struct other_sections ** | |
529 | addrs_section_sort (struct section_addr_info *addrs) | |
530 | { | |
531 | struct other_sections **array; | |
532 | int i; | |
533 | ||
534 | /* `+ 1' for the NULL terminator. */ | |
8d749320 | 535 | array = XNEWVEC (struct other_sections *, addrs->num_sections + 1); |
d76488d8 | 536 | for (i = 0; i < addrs->num_sections; i++) |
82ccf5a5 JK |
537 | array[i] = &addrs->other[i]; |
538 | array[i] = NULL; | |
539 | ||
540 | qsort (array, i, sizeof (*array), addrs_section_compar); | |
541 | ||
542 | return array; | |
543 | } | |
544 | ||
75242ef4 | 545 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
546 | also SECTINDEXes specific to ABFD there. This function can be used to |
547 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
548 | |
549 | void | |
550 | addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd) | |
551 | { | |
552 | asection *lower_sect; | |
75242ef4 JK |
553 | CORE_ADDR lower_offset; |
554 | int i; | |
82ccf5a5 JK |
555 | struct cleanup *my_cleanup; |
556 | struct section_addr_info *abfd_addrs; | |
557 | struct other_sections **addrs_sorted, **abfd_addrs_sorted; | |
558 | struct other_sections **addrs_to_abfd_addrs; | |
75242ef4 JK |
559 | |
560 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
561 | continguous sections. */ |
562 | lower_sect = NULL; | |
563 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
564 | if (lower_sect == NULL) |
565 | { | |
566 | warning (_("no loadable sections found in added symbol-file %s"), | |
567 | bfd_get_filename (abfd)); | |
568 | lower_offset = 0; | |
e8289572 | 569 | } |
75242ef4 JK |
570 | else |
571 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
572 | ||
82ccf5a5 JK |
573 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
574 | in ABFD. Section names are not unique - there can be multiple sections of | |
575 | the same name. Also the sections of the same name do not have to be | |
576 | adjacent to each other. Some sections may be present only in one of the | |
577 | files. Even sections present in both files do not have to be in the same | |
578 | order. | |
579 | ||
580 | Use stable sort by name for the sections in both files. Then linearly | |
581 | scan both lists matching as most of the entries as possible. */ | |
582 | ||
583 | addrs_sorted = addrs_section_sort (addrs); | |
584 | my_cleanup = make_cleanup (xfree, addrs_sorted); | |
585 | ||
586 | abfd_addrs = build_section_addr_info_from_bfd (abfd); | |
587 | make_cleanup_free_section_addr_info (abfd_addrs); | |
588 | abfd_addrs_sorted = addrs_section_sort (abfd_addrs); | |
589 | make_cleanup (xfree, abfd_addrs_sorted); | |
590 | ||
c378eb4e MS |
591 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
592 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 | 593 | |
8d749320 | 594 | addrs_to_abfd_addrs = XCNEWVEC (struct other_sections *, addrs->num_sections); |
82ccf5a5 JK |
595 | make_cleanup (xfree, addrs_to_abfd_addrs); |
596 | ||
597 | while (*addrs_sorted) | |
598 | { | |
1276c759 | 599 | const char *sect_name = addr_section_name ((*addrs_sorted)->name); |
82ccf5a5 JK |
600 | |
601 | while (*abfd_addrs_sorted | |
1276c759 JK |
602 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
603 | sect_name) < 0) | |
82ccf5a5 JK |
604 | abfd_addrs_sorted++; |
605 | ||
606 | if (*abfd_addrs_sorted | |
1276c759 JK |
607 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
608 | sect_name) == 0) | |
82ccf5a5 JK |
609 | { |
610 | int index_in_addrs; | |
611 | ||
612 | /* Make the found item directly addressable from ADDRS. */ | |
613 | index_in_addrs = *addrs_sorted - addrs->other; | |
614 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); | |
615 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_addrs_sorted; | |
616 | ||
617 | /* Never use the same ABFD entry twice. */ | |
618 | abfd_addrs_sorted++; | |
619 | } | |
620 | ||
621 | addrs_sorted++; | |
622 | } | |
623 | ||
75242ef4 JK |
624 | /* Calculate offsets for the loadable sections. |
625 | FIXME! Sections must be in order of increasing loadable section | |
626 | so that contiguous sections can use the lower-offset!!! | |
627 | ||
628 | Adjust offsets if the segments are not contiguous. | |
629 | If the section is contiguous, its offset should be set to | |
630 | the offset of the highest loadable section lower than it | |
631 | (the loadable section directly below it in memory). | |
632 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
633 | ||
d76488d8 | 634 | for (i = 0; i < addrs->num_sections; i++) |
75242ef4 | 635 | { |
82ccf5a5 | 636 | struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
637 | |
638 | if (sect) | |
75242ef4 | 639 | { |
c378eb4e | 640 | /* This is the index used by BFD. */ |
82ccf5a5 | 641 | addrs->other[i].sectindex = sect->sectindex; |
672d9c23 JK |
642 | |
643 | if (addrs->other[i].addr != 0) | |
75242ef4 | 644 | { |
82ccf5a5 | 645 | addrs->other[i].addr -= sect->addr; |
75242ef4 | 646 | lower_offset = addrs->other[i].addr; |
75242ef4 JK |
647 | } |
648 | else | |
672d9c23 | 649 | addrs->other[i].addr = lower_offset; |
75242ef4 JK |
650 | } |
651 | else | |
672d9c23 | 652 | { |
1276c759 JK |
653 | /* addr_section_name transformation is not used for SECT_NAME. */ |
654 | const char *sect_name = addrs->other[i].name; | |
655 | ||
b0fcb67f JK |
656 | /* This section does not exist in ABFD, which is normally |
657 | unexpected and we want to issue a warning. | |
658 | ||
4d9743af JK |
659 | However, the ELF prelinker does create a few sections which are |
660 | marked in the main executable as loadable (they are loaded in | |
661 | memory from the DYNAMIC segment) and yet are not present in | |
662 | separate debug info files. This is fine, and should not cause | |
663 | a warning. Shared libraries contain just the section | |
664 | ".gnu.liblist" but it is not marked as loadable there. There is | |
665 | no other way to identify them than by their name as the sections | |
1276c759 JK |
666 | created by prelink have no special flags. |
667 | ||
668 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f JK |
669 | |
670 | if (!(strcmp (sect_name, ".gnu.liblist") == 0 | |
4d9743af | 671 | || strcmp (sect_name, ".gnu.conflict") == 0 |
1276c759 JK |
672 | || (strcmp (sect_name, ".bss") == 0 |
673 | && i > 0 | |
674 | && strcmp (addrs->other[i - 1].name, ".dynbss") == 0 | |
675 | && addrs_to_abfd_addrs[i - 1] != NULL) | |
676 | || (strcmp (sect_name, ".sbss") == 0 | |
677 | && i > 0 | |
678 | && strcmp (addrs->other[i - 1].name, ".sdynbss") == 0 | |
679 | && addrs_to_abfd_addrs[i - 1] != NULL))) | |
b0fcb67f JK |
680 | warning (_("section %s not found in %s"), sect_name, |
681 | bfd_get_filename (abfd)); | |
682 | ||
672d9c23 | 683 | addrs->other[i].addr = 0; |
5488dafb | 684 | addrs->other[i].sectindex = -1; |
672d9c23 | 685 | } |
75242ef4 | 686 | } |
82ccf5a5 JK |
687 | |
688 | do_cleanups (my_cleanup); | |
75242ef4 JK |
689 | } |
690 | ||
691 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
692 | of how to represent it for fast symbol reading. This is the default | |
693 | version of the sym_fns.sym_offsets function for symbol readers that | |
694 | don't need to do anything special. It allocates a section_offsets table | |
695 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
696 | ||
697 | void | |
698 | default_symfile_offsets (struct objfile *objfile, | |
3189cb12 | 699 | const struct section_addr_info *addrs) |
75242ef4 | 700 | { |
d445b2f6 | 701 | objfile->num_sections = gdb_bfd_count_sections (objfile->obfd); |
75242ef4 JK |
702 | objfile->section_offsets = (struct section_offsets *) |
703 | obstack_alloc (&objfile->objfile_obstack, | |
704 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
705 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
706 | objfile->num_sections, addrs); | |
e8289572 | 707 | |
c1bd25fd DJ |
708 | /* For relocatable files, all loadable sections will start at zero. |
709 | The zero is meaningless, so try to pick arbitrary addresses such | |
710 | that no loadable sections overlap. This algorithm is quadratic, | |
711 | but the number of sections in a single object file is generally | |
712 | small. */ | |
713 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
714 | { | |
715 | struct place_section_arg arg; | |
2711e456 DJ |
716 | bfd *abfd = objfile->obfd; |
717 | asection *cur_sec; | |
2711e456 DJ |
718 | |
719 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
720 | /* We do not expect this to happen; just skip this step if the | |
721 | relocatable file has a section with an assigned VMA. */ | |
722 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
723 | break; | |
724 | ||
725 | if (cur_sec == NULL) | |
726 | { | |
727 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
728 | ||
729 | /* Pick non-overlapping offsets for sections the user did not | |
730 | place explicitly. */ | |
731 | arg.offsets = objfile->section_offsets; | |
732 | arg.lowest = 0; | |
733 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
734 | ||
735 | /* Correctly filling in the section offsets is not quite | |
736 | enough. Relocatable files have two properties that | |
737 | (most) shared objects do not: | |
738 | ||
739 | - Their debug information will contain relocations. Some | |
740 | shared libraries do also, but many do not, so this can not | |
741 | be assumed. | |
742 | ||
743 | - If there are multiple code sections they will be loaded | |
744 | at different relative addresses in memory than they are | |
745 | in the objfile, since all sections in the file will start | |
746 | at address zero. | |
747 | ||
748 | Because GDB has very limited ability to map from an | |
749 | address in debug info to the correct code section, | |
750 | it relies on adding SECT_OFF_TEXT to things which might be | |
751 | code. If we clear all the section offsets, and set the | |
752 | section VMAs instead, then symfile_relocate_debug_section | |
753 | will return meaningful debug information pointing at the | |
754 | correct sections. | |
755 | ||
756 | GDB has too many different data structures for section | |
757 | addresses - a bfd, objfile, and so_list all have section | |
758 | tables, as does exec_ops. Some of these could probably | |
759 | be eliminated. */ | |
760 | ||
761 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
762 | cur_sec = cur_sec->next) | |
763 | { | |
764 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
765 | continue; | |
766 | ||
767 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
768 | exec_set_section_address (bfd_get_filename (abfd), |
769 | cur_sec->index, | |
30510692 | 770 | offsets[cur_sec->index]); |
2711e456 DJ |
771 | offsets[cur_sec->index] = 0; |
772 | } | |
773 | } | |
c1bd25fd DJ |
774 | } |
775 | ||
e8289572 | 776 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 777 | .rodata sections. */ |
e8289572 JB |
778 | init_objfile_sect_indices (objfile); |
779 | } | |
780 | ||
31d99776 DJ |
781 | /* Divide the file into segments, which are individual relocatable units. |
782 | This is the default version of the sym_fns.sym_segments function for | |
783 | symbol readers that do not have an explicit representation of segments. | |
784 | It assumes that object files do not have segments, and fully linked | |
785 | files have a single segment. */ | |
786 | ||
787 | struct symfile_segment_data * | |
788 | default_symfile_segments (bfd *abfd) | |
789 | { | |
790 | int num_sections, i; | |
791 | asection *sect; | |
792 | struct symfile_segment_data *data; | |
793 | CORE_ADDR low, high; | |
794 | ||
795 | /* Relocatable files contain enough information to position each | |
796 | loadable section independently; they should not be relocated | |
797 | in segments. */ | |
798 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
799 | return NULL; | |
800 | ||
801 | /* Make sure there is at least one loadable section in the file. */ | |
802 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
803 | { | |
804 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
805 | continue; | |
806 | ||
807 | break; | |
808 | } | |
809 | if (sect == NULL) | |
810 | return NULL; | |
811 | ||
812 | low = bfd_get_section_vma (abfd, sect); | |
813 | high = low + bfd_get_section_size (sect); | |
814 | ||
41bf6aca | 815 | data = XCNEW (struct symfile_segment_data); |
31d99776 | 816 | data->num_segments = 1; |
fc270c35 TT |
817 | data->segment_bases = XCNEW (CORE_ADDR); |
818 | data->segment_sizes = XCNEW (CORE_ADDR); | |
31d99776 DJ |
819 | |
820 | num_sections = bfd_count_sections (abfd); | |
fc270c35 | 821 | data->segment_info = XCNEWVEC (int, num_sections); |
31d99776 DJ |
822 | |
823 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
824 | { | |
825 | CORE_ADDR vma; | |
826 | ||
827 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
828 | continue; | |
829 | ||
830 | vma = bfd_get_section_vma (abfd, sect); | |
831 | if (vma < low) | |
832 | low = vma; | |
833 | if (vma + bfd_get_section_size (sect) > high) | |
834 | high = vma + bfd_get_section_size (sect); | |
835 | ||
836 | data->segment_info[i] = 1; | |
837 | } | |
838 | ||
839 | data->segment_bases[0] = low; | |
840 | data->segment_sizes[0] = high - low; | |
841 | ||
842 | return data; | |
843 | } | |
844 | ||
608e2dbb TT |
845 | /* This is a convenience function to call sym_read for OBJFILE and |
846 | possibly force the partial symbols to be read. */ | |
847 | ||
848 | static void | |
b15cc25c | 849 | read_symbols (struct objfile *objfile, symfile_add_flags add_flags) |
608e2dbb TT |
850 | { |
851 | (*objfile->sf->sym_read) (objfile, add_flags); | |
23732b1e | 852 | objfile->per_bfd->minsyms_read = true; |
8a92335b JK |
853 | |
854 | /* find_separate_debug_file_in_section should be called only if there is | |
855 | single binary with no existing separate debug info file. */ | |
856 | if (!objfile_has_partial_symbols (objfile) | |
857 | && objfile->separate_debug_objfile == NULL | |
858 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb | 859 | { |
192b62ce | 860 | gdb_bfd_ref_ptr abfd (find_separate_debug_file_in_section (objfile)); |
608e2dbb TT |
861 | |
862 | if (abfd != NULL) | |
24ba069a JK |
863 | { |
864 | /* find_separate_debug_file_in_section uses the same filename for the | |
865 | virtual section-as-bfd like the bfd filename containing the | |
866 | section. Therefore use also non-canonical name form for the same | |
867 | file containing the section. */ | |
192b62ce TT |
868 | symbol_file_add_separate (abfd.get (), objfile->original_name, |
869 | add_flags, objfile); | |
24ba069a | 870 | } |
608e2dbb TT |
871 | } |
872 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
873 | require_partial_symbols (objfile, 0); | |
874 | } | |
875 | ||
3d6e24f0 JB |
876 | /* Initialize entry point information for this objfile. */ |
877 | ||
878 | static void | |
879 | init_entry_point_info (struct objfile *objfile) | |
880 | { | |
6ef55de7 TT |
881 | struct entry_info *ei = &objfile->per_bfd->ei; |
882 | ||
883 | if (ei->initialized) | |
884 | return; | |
885 | ei->initialized = 1; | |
886 | ||
3d6e24f0 JB |
887 | /* Save startup file's range of PC addresses to help blockframe.c |
888 | decide where the bottom of the stack is. */ | |
889 | ||
890 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
891 | { | |
892 | /* Executable file -- record its entry point so we'll recognize | |
893 | the startup file because it contains the entry point. */ | |
6ef55de7 TT |
894 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
895 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
896 | } |
897 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
898 | && bfd_get_start_address (objfile->obfd) != 0) | |
899 | { | |
900 | /* Some shared libraries may have entry points set and be | |
901 | runnable. There's no clear way to indicate this, so just check | |
902 | for values other than zero. */ | |
6ef55de7 TT |
903 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
904 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
905 | } |
906 | else | |
907 | { | |
908 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
6ef55de7 | 909 | ei->entry_point_p = 0; |
3d6e24f0 JB |
910 | } |
911 | ||
6ef55de7 | 912 | if (ei->entry_point_p) |
3d6e24f0 | 913 | { |
53eddfa6 | 914 | struct obj_section *osect; |
6ef55de7 | 915 | CORE_ADDR entry_point = ei->entry_point; |
53eddfa6 | 916 | int found; |
3d6e24f0 JB |
917 | |
918 | /* Make certain that the address points at real code, and not a | |
919 | function descriptor. */ | |
920 | entry_point | |
df6d5441 | 921 | = gdbarch_convert_from_func_ptr_addr (get_objfile_arch (objfile), |
3d6e24f0 JB |
922 | entry_point, |
923 | ¤t_target); | |
924 | ||
925 | /* Remove any ISA markers, so that this matches entries in the | |
926 | symbol table. */ | |
6ef55de7 | 927 | ei->entry_point |
df6d5441 | 928 | = gdbarch_addr_bits_remove (get_objfile_arch (objfile), entry_point); |
53eddfa6 TT |
929 | |
930 | found = 0; | |
931 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
932 | { | |
933 | struct bfd_section *sect = osect->the_bfd_section; | |
934 | ||
935 | if (entry_point >= bfd_get_section_vma (objfile->obfd, sect) | |
936 | && entry_point < (bfd_get_section_vma (objfile->obfd, sect) | |
937 | + bfd_get_section_size (sect))) | |
938 | { | |
6ef55de7 | 939 | ei->the_bfd_section_index |
53eddfa6 TT |
940 | = gdb_bfd_section_index (objfile->obfd, sect); |
941 | found = 1; | |
942 | break; | |
943 | } | |
944 | } | |
945 | ||
946 | if (!found) | |
6ef55de7 | 947 | ei->the_bfd_section_index = SECT_OFF_TEXT (objfile); |
3d6e24f0 JB |
948 | } |
949 | } | |
950 | ||
c906108c SS |
951 | /* Process a symbol file, as either the main file or as a dynamically |
952 | loaded file. | |
953 | ||
36e4d068 JB |
954 | This function does not set the OBJFILE's entry-point info. |
955 | ||
96baa820 JM |
956 | OBJFILE is where the symbols are to be read from. |
957 | ||
7e8580c1 JB |
958 | ADDRS is the list of section load addresses. If the user has given |
959 | an 'add-symbol-file' command, then this is the list of offsets and | |
960 | addresses he or she provided as arguments to the command; or, if | |
961 | we're handling a shared library, these are the actual addresses the | |
962 | sections are loaded at, according to the inferior's dynamic linker | |
963 | (as gleaned by GDB's shared library code). We convert each address | |
964 | into an offset from the section VMA's as it appears in the object | |
965 | file, and then call the file's sym_offsets function to convert this | |
966 | into a format-specific offset table --- a `struct section_offsets'. | |
96baa820 | 967 | |
7eedccfa PP |
968 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
969 | an extra symbol file such as dynamically loaded code, and wether | |
970 | breakpoint reset should be deferred. */ | |
c906108c | 971 | |
36e4d068 JB |
972 | static void |
973 | syms_from_objfile_1 (struct objfile *objfile, | |
974 | struct section_addr_info *addrs, | |
b15cc25c | 975 | symfile_add_flags add_flags) |
c906108c | 976 | { |
a39a16c4 | 977 | struct section_addr_info *local_addr = NULL; |
c906108c | 978 | struct cleanup *old_chain; |
7eedccfa | 979 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 980 | |
8fb8eb5c | 981 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
c906108c | 982 | |
75245b24 | 983 | if (objfile->sf == NULL) |
36e4d068 JB |
984 | { |
985 | /* No symbols to load, but we still need to make sure | |
986 | that the section_offsets table is allocated. */ | |
d445b2f6 | 987 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
a7bfba49 | 988 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_sections); |
36e4d068 JB |
989 | |
990 | objfile->num_sections = num_sections; | |
991 | objfile->section_offsets | |
224c3ddb SM |
992 | = (struct section_offsets *) obstack_alloc (&objfile->objfile_obstack, |
993 | size); | |
36e4d068 JB |
994 | memset (objfile->section_offsets, 0, size); |
995 | return; | |
996 | } | |
75245b24 | 997 | |
c906108c SS |
998 | /* Make sure that partially constructed symbol tables will be cleaned up |
999 | if an error occurs during symbol reading. */ | |
74b7792f | 1000 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 1001 | |
6bf667bb DE |
1002 | /* If ADDRS is NULL, put together a dummy address list. |
1003 | We now establish the convention that an addr of zero means | |
c378eb4e | 1004 | no load address was specified. */ |
6bf667bb | 1005 | if (! addrs) |
a39a16c4 | 1006 | { |
d445b2f6 | 1007 | local_addr = alloc_section_addr_info (1); |
a39a16c4 MM |
1008 | make_cleanup (xfree, local_addr); |
1009 | addrs = local_addr; | |
1010 | } | |
1011 | ||
c5aa993b | 1012 | if (mainline) |
c906108c SS |
1013 | { |
1014 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 1015 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 1016 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
1017 | |
1018 | /* Since no error yet, throw away the old symbol table. */ | |
1019 | ||
1020 | if (symfile_objfile != NULL) | |
1021 | { | |
9e86da07 | 1022 | delete symfile_objfile; |
adb7f338 | 1023 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
1024 | } |
1025 | ||
1026 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
1027 | If the user wants to get rid of them, they should do "symbol-file" |
1028 | without arguments first. Not sure this is the best behavior | |
1029 | (PR 2207). */ | |
c906108c | 1030 | |
c5aa993b | 1031 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
1032 | } |
1033 | ||
1034 | /* Convert addr into an offset rather than an absolute address. | |
1035 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 1036 | and assume that <addr> is where that got loaded. |
c906108c | 1037 | |
53a5351d JM |
1038 | We no longer warn if the lowest section is not a text segment (as |
1039 | happens for the PA64 port. */ | |
6bf667bb | 1040 | if (addrs->num_sections > 0) |
75242ef4 | 1041 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
1042 | |
1043 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
1044 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 1045 | initial symbol reading for this file. */ |
c906108c | 1046 | |
c5aa993b | 1047 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 1048 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 1049 | |
6bf667bb | 1050 | (*objfile->sf->sym_offsets) (objfile, addrs); |
c906108c | 1051 | |
608e2dbb | 1052 | read_symbols (objfile, add_flags); |
b11896a5 | 1053 | |
c906108c SS |
1054 | /* Discard cleanups as symbol reading was successful. */ |
1055 | ||
1056 | discard_cleanups (old_chain); | |
f7545552 | 1057 | xfree (local_addr); |
c906108c SS |
1058 | } |
1059 | ||
36e4d068 JB |
1060 | /* Same as syms_from_objfile_1, but also initializes the objfile |
1061 | entry-point info. */ | |
1062 | ||
6bf667bb | 1063 | static void |
36e4d068 JB |
1064 | syms_from_objfile (struct objfile *objfile, |
1065 | struct section_addr_info *addrs, | |
b15cc25c | 1066 | symfile_add_flags add_flags) |
36e4d068 | 1067 | { |
6bf667bb | 1068 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
1069 | init_entry_point_info (objfile); |
1070 | } | |
1071 | ||
c906108c SS |
1072 | /* Perform required actions after either reading in the initial |
1073 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1074 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1075 | |
e7d52ed3 | 1076 | static void |
b15cc25c | 1077 | finish_new_objfile (struct objfile *objfile, symfile_add_flags add_flags) |
c906108c | 1078 | { |
c906108c | 1079 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1080 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1081 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1082 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1083 | { |
1084 | /* OK, make it the "real" symbol file. */ | |
1085 | symfile_objfile = objfile; | |
1086 | ||
c1e56572 | 1087 | clear_symtab_users (add_flags); |
c906108c | 1088 | } |
7eedccfa | 1089 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1090 | { |
69de3c6a | 1091 | breakpoint_re_set (); |
c906108c SS |
1092 | } |
1093 | ||
1094 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 1095 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
1096 | } |
1097 | ||
1098 | /* Process a symbol file, as either the main file or as a dynamically | |
1099 | loaded file. | |
1100 | ||
5417f6dc | 1101 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1102 | A new reference is acquired by this function. |
7904e09f | 1103 | |
9e86da07 | 1104 | For NAME description see the objfile constructor. |
24ba069a | 1105 | |
7eedccfa PP |
1106 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1107 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f | 1108 | |
6bf667bb | 1109 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1110 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1111 | |
63524580 JK |
1112 | PARENT is the original objfile if ABFD is a separate debug info file. |
1113 | Otherwise PARENT is NULL. | |
1114 | ||
c906108c | 1115 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1116 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1117 | |
7904e09f | 1118 | static struct objfile * |
b15cc25c PA |
1119 | symbol_file_add_with_addrs (bfd *abfd, const char *name, |
1120 | symfile_add_flags add_flags, | |
6bf667bb | 1121 | struct section_addr_info *addrs, |
b15cc25c | 1122 | objfile_flags flags, struct objfile *parent) |
c906108c SS |
1123 | { |
1124 | struct objfile *objfile; | |
7eedccfa | 1125 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1126 | const int mainline = add_flags & SYMFILE_MAINLINE; |
770e7fc7 | 1127 | const int should_print = (print_symbol_loading_p (from_tty, mainline, 1) |
b11896a5 TT |
1128 | && (readnow_symbol_files |
1129 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1130 | |
9291a0cd | 1131 | if (readnow_symbol_files) |
b11896a5 TT |
1132 | { |
1133 | flags |= OBJF_READNOW; | |
1134 | add_flags &= ~SYMFILE_NO_READ; | |
1135 | } | |
9291a0cd | 1136 | |
5417f6dc RM |
1137 | /* Give user a chance to burp if we'd be |
1138 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1139 | |
1140 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1141 | && mainline |
c906108c | 1142 | && from_tty |
9e2f0ad4 | 1143 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1144 | error (_("Not confirmed.")); |
c906108c | 1145 | |
b15cc25c PA |
1146 | if (mainline) |
1147 | flags |= OBJF_MAINLINE; | |
9e86da07 | 1148 | objfile = new struct objfile (abfd, name, flags); |
c906108c | 1149 | |
63524580 JK |
1150 | if (parent) |
1151 | add_separate_debug_objfile (objfile, parent); | |
1152 | ||
78a4a9b9 AC |
1153 | /* We either created a new mapped symbol table, mapped an existing |
1154 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1155 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1156 | if (should_print) |
c906108c | 1157 | { |
769d7dc4 AC |
1158 | if (deprecated_pre_add_symbol_hook) |
1159 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1160 | else |
c906108c | 1161 | { |
55333a84 DE |
1162 | printf_unfiltered (_("Reading symbols from %s..."), name); |
1163 | wrap_here (""); | |
1164 | gdb_flush (gdb_stdout); | |
c906108c | 1165 | } |
c906108c | 1166 | } |
6bf667bb | 1167 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1168 | |
1169 | /* We now have at least a partial symbol table. Check to see if the | |
1170 | user requested that all symbols be read on initial access via either | |
1171 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1172 | all partial symbol tables for this objfile if so. */ |
c906108c | 1173 | |
9291a0cd | 1174 | if ((flags & OBJF_READNOW)) |
c906108c | 1175 | { |
b11896a5 | 1176 | if (should_print) |
c906108c | 1177 | { |
a3f17187 | 1178 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1179 | wrap_here (""); |
1180 | gdb_flush (gdb_stdout); | |
1181 | } | |
1182 | ||
ccefe4c4 TT |
1183 | if (objfile->sf) |
1184 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1185 | } |
1186 | ||
b11896a5 | 1187 | if (should_print && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1188 | { |
1189 | wrap_here (""); | |
55333a84 | 1190 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1191 | wrap_here (""); |
1192 | } | |
1193 | ||
b11896a5 | 1194 | if (should_print) |
c906108c | 1195 | { |
769d7dc4 AC |
1196 | if (deprecated_post_add_symbol_hook) |
1197 | deprecated_post_add_symbol_hook (); | |
c906108c | 1198 | else |
55333a84 | 1199 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1200 | } |
1201 | ||
481d0f41 JB |
1202 | /* We print some messages regardless of whether 'from_tty || |
1203 | info_verbose' is true, so make sure they go out at the right | |
1204 | time. */ | |
1205 | gdb_flush (gdb_stdout); | |
1206 | ||
109f874e | 1207 | if (objfile->sf == NULL) |
8caee43b PP |
1208 | { |
1209 | observer_notify_new_objfile (objfile); | |
c378eb4e | 1210 | return objfile; /* No symbols. */ |
8caee43b | 1211 | } |
109f874e | 1212 | |
e7d52ed3 | 1213 | finish_new_objfile (objfile, add_flags); |
c906108c | 1214 | |
06d3b283 | 1215 | observer_notify_new_objfile (objfile); |
c906108c | 1216 | |
ce7d4522 | 1217 | bfd_cache_close_all (); |
c906108c SS |
1218 | return (objfile); |
1219 | } | |
1220 | ||
24ba069a | 1221 | /* Add BFD as a separate debug file for OBJFILE. For NAME description |
9e86da07 | 1222 | see the objfile constructor. */ |
9cce227f TG |
1223 | |
1224 | void | |
b15cc25c PA |
1225 | symbol_file_add_separate (bfd *bfd, const char *name, |
1226 | symfile_add_flags symfile_flags, | |
24ba069a | 1227 | struct objfile *objfile) |
9cce227f | 1228 | { |
089b4803 TG |
1229 | struct section_addr_info *sap; |
1230 | struct cleanup *my_cleanup; | |
1231 | ||
1232 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1233 | because sections of BFD may not match sections of OBJFILE and because | |
1234 | vma may have been modified by tools such as prelink. */ | |
1235 | sap = build_section_addr_info_from_objfile (objfile); | |
1236 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1237 | |
870f88f7 | 1238 | symbol_file_add_with_addrs |
24ba069a | 1239 | (bfd, name, symfile_flags, sap, |
9cce227f | 1240 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1241 | | OBJF_USERLOADED), |
1242 | objfile); | |
089b4803 TG |
1243 | |
1244 | do_cleanups (my_cleanup); | |
9cce227f | 1245 | } |
7904e09f | 1246 | |
eb4556d7 JB |
1247 | /* Process the symbol file ABFD, as either the main file or as a |
1248 | dynamically loaded file. | |
6bf667bb | 1249 | See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1250 | |
eb4556d7 | 1251 | struct objfile * |
b15cc25c PA |
1252 | symbol_file_add_from_bfd (bfd *abfd, const char *name, |
1253 | symfile_add_flags add_flags, | |
eb4556d7 | 1254 | struct section_addr_info *addrs, |
b15cc25c | 1255 | objfile_flags flags, struct objfile *parent) |
eb4556d7 | 1256 | { |
24ba069a JK |
1257 | return symbol_file_add_with_addrs (abfd, name, add_flags, addrs, flags, |
1258 | parent); | |
eb4556d7 JB |
1259 | } |
1260 | ||
7904e09f | 1261 | /* Process a symbol file, as either the main file or as a dynamically |
6bf667bb | 1262 | loaded file. See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1263 | |
7904e09f | 1264 | struct objfile * |
b15cc25c PA |
1265 | symbol_file_add (const char *name, symfile_add_flags add_flags, |
1266 | struct section_addr_info *addrs, objfile_flags flags) | |
7904e09f | 1267 | { |
192b62ce | 1268 | gdb_bfd_ref_ptr bfd (symfile_bfd_open (name)); |
8ac244b4 | 1269 | |
192b62ce TT |
1270 | return symbol_file_add_from_bfd (bfd.get (), name, add_flags, addrs, |
1271 | flags, NULL); | |
7904e09f JB |
1272 | } |
1273 | ||
d7db6da9 FN |
1274 | /* Call symbol_file_add() with default values and update whatever is |
1275 | affected by the loading of a new main(). | |
1276 | Used when the file is supplied in the gdb command line | |
1277 | and by some targets with special loading requirements. | |
1278 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1279 | argument for the switches that can only be specified in the symbol_file | |
1280 | command itself. */ | |
5417f6dc | 1281 | |
1adeb98a | 1282 | void |
ecf45d2c | 1283 | symbol_file_add_main (const char *args, symfile_add_flags add_flags) |
1adeb98a | 1284 | { |
ecf45d2c | 1285 | symbol_file_add_main_1 (args, add_flags, 0); |
d7db6da9 FN |
1286 | } |
1287 | ||
1288 | static void | |
ecf45d2c SL |
1289 | symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
1290 | objfile_flags flags) | |
d7db6da9 | 1291 | { |
ecf45d2c | 1292 | add_flags |= current_inferior ()->symfile_flags | SYMFILE_MAINLINE; |
7dcd53a0 | 1293 | |
7eedccfa | 1294 | symbol_file_add (args, add_flags, NULL, flags); |
d7db6da9 | 1295 | |
d7db6da9 FN |
1296 | /* Getting new symbols may change our opinion about |
1297 | what is frameless. */ | |
1298 | reinit_frame_cache (); | |
1299 | ||
b15cc25c | 1300 | if ((add_flags & SYMFILE_NO_READ) == 0) |
7dcd53a0 | 1301 | set_initial_language (); |
1adeb98a FN |
1302 | } |
1303 | ||
1304 | void | |
1305 | symbol_file_clear (int from_tty) | |
1306 | { | |
1307 | if ((have_full_symbols () || have_partial_symbols ()) | |
1308 | && from_tty | |
0430b0d6 AS |
1309 | && (symfile_objfile |
1310 | ? !query (_("Discard symbol table from `%s'? "), | |
4262abfb | 1311 | objfile_name (symfile_objfile)) |
0430b0d6 | 1312 | : !query (_("Discard symbol table? ")))) |
8a3fe4f8 | 1313 | error (_("Not confirmed.")); |
1adeb98a | 1314 | |
0133421a JK |
1315 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1316 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1317 | no_shared_libraries (NULL, from_tty); |
1318 | ||
0133421a JK |
1319 | free_all_objfiles (); |
1320 | ||
adb7f338 | 1321 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1322 | if (from_tty) |
1323 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1324 | } |
1325 | ||
c4dcb155 SM |
1326 | /* See symfile.h. */ |
1327 | ||
1328 | int separate_debug_file_debug = 0; | |
1329 | ||
5b5d99cf | 1330 | static int |
287ccc17 | 1331 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1332 | struct objfile *parent_objfile) |
5b5d99cf | 1333 | { |
904578ed JK |
1334 | unsigned long file_crc; |
1335 | int file_crc_p; | |
32a0e547 | 1336 | struct stat parent_stat, abfd_stat; |
904578ed | 1337 | int verified_as_different; |
32a0e547 JK |
1338 | |
1339 | /* Find a separate debug info file as if symbols would be present in | |
1340 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1341 | section can contain just the basename of PARENT_OBJFILE without any | |
1342 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1343 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1344 | |
4262abfb | 1345 | if (filename_cmp (name, objfile_name (parent_objfile)) == 0) |
32a0e547 | 1346 | return 0; |
5b5d99cf | 1347 | |
c4dcb155 SM |
1348 | if (separate_debug_file_debug) |
1349 | printf_unfiltered (_(" Trying %s\n"), name); | |
1350 | ||
192b62ce | 1351 | gdb_bfd_ref_ptr abfd (gdb_bfd_open (name, gnutarget, -1)); |
f1838a98 | 1352 | |
192b62ce | 1353 | if (abfd == NULL) |
5b5d99cf JB |
1354 | return 0; |
1355 | ||
0ba1096a | 1356 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1357 | |
1358 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1359 | st_ino; they always set it to zero. (Windows does provide a | |
0a93529c GB |
1360 | meaningful st_dev.) Files accessed from gdbservers that do not |
1361 | support the vFile:fstat packet will also have st_ino set to zero. | |
1362 | Do not indicate a duplicate library in either case. While there | |
1363 | is no guarantee that a system that provides meaningful inode | |
1364 | numbers will never set st_ino to zero, this is merely an | |
1365 | optimization, so we do not need to worry about false negatives. */ | |
32a0e547 | 1366 | |
192b62ce | 1367 | if (bfd_stat (abfd.get (), &abfd_stat) == 0 |
904578ed JK |
1368 | && abfd_stat.st_ino != 0 |
1369 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1370 | { |
904578ed JK |
1371 | if (abfd_stat.st_dev == parent_stat.st_dev |
1372 | && abfd_stat.st_ino == parent_stat.st_ino) | |
192b62ce | 1373 | return 0; |
904578ed | 1374 | verified_as_different = 1; |
32a0e547 | 1375 | } |
904578ed JK |
1376 | else |
1377 | verified_as_different = 0; | |
32a0e547 | 1378 | |
192b62ce | 1379 | file_crc_p = gdb_bfd_crc (abfd.get (), &file_crc); |
5b5d99cf | 1380 | |
904578ed JK |
1381 | if (!file_crc_p) |
1382 | return 0; | |
1383 | ||
287ccc17 JK |
1384 | if (crc != file_crc) |
1385 | { | |
dccee2de TT |
1386 | unsigned long parent_crc; |
1387 | ||
0a93529c GB |
1388 | /* If the files could not be verified as different with |
1389 | bfd_stat then we need to calculate the parent's CRC | |
1390 | to verify whether the files are different or not. */ | |
904578ed | 1391 | |
dccee2de | 1392 | if (!verified_as_different) |
904578ed | 1393 | { |
dccee2de | 1394 | if (!gdb_bfd_crc (parent_objfile->obfd, &parent_crc)) |
904578ed JK |
1395 | return 0; |
1396 | } | |
1397 | ||
dccee2de | 1398 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1399 | warning (_("the debug information found in \"%s\"" |
1400 | " does not match \"%s\" (CRC mismatch).\n"), | |
4262abfb | 1401 | name, objfile_name (parent_objfile)); |
904578ed | 1402 | |
287ccc17 JK |
1403 | return 0; |
1404 | } | |
1405 | ||
1406 | return 1; | |
5b5d99cf JB |
1407 | } |
1408 | ||
aa28a74e | 1409 | char *debug_file_directory = NULL; |
920d2a44 AC |
1410 | static void |
1411 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1412 | struct cmd_list_element *c, const char *value) | |
1413 | { | |
3e43a32a MS |
1414 | fprintf_filtered (file, |
1415 | _("The directory where separate debug " | |
1416 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1417 | value); |
1418 | } | |
5b5d99cf JB |
1419 | |
1420 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1421 | #define DEBUG_SUBDIRECTORY ".debug" | |
1422 | #endif | |
1423 | ||
1db33378 PP |
1424 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1425 | where the original file resides (may not be the same as | |
1426 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1427 | looking for. CANON_DIR is the "realpath" form of DIR. |
1428 | DIR must contain a trailing '/'. | |
1429 | Returns the path of the file with separate debug info, of NULL. */ | |
1db33378 PP |
1430 | |
1431 | static char * | |
1432 | find_separate_debug_file (const char *dir, | |
1433 | const char *canon_dir, | |
1434 | const char *debuglink, | |
1435 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1436 | { |
1db33378 PP |
1437 | char *debugdir; |
1438 | char *debugfile; | |
9cce227f | 1439 | int i; |
e4ab2fad JK |
1440 | VEC (char_ptr) *debugdir_vec; |
1441 | struct cleanup *back_to; | |
1442 | int ix; | |
5b5d99cf | 1443 | |
c4dcb155 SM |
1444 | if (separate_debug_file_debug) |
1445 | printf_unfiltered (_("\nLooking for separate debug info (debug link) for " | |
1446 | "%s\n"), objfile_name (objfile)); | |
1447 | ||
325fac50 | 1448 | /* Set I to std::max (strlen (canon_dir), strlen (dir)). */ |
1ffa32ee | 1449 | i = strlen (dir); |
1db33378 PP |
1450 | if (canon_dir != NULL && strlen (canon_dir) > i) |
1451 | i = strlen (canon_dir); | |
1ffa32ee | 1452 | |
224c3ddb SM |
1453 | debugfile |
1454 | = (char *) xmalloc (strlen (debug_file_directory) + 1 | |
1455 | + i | |
1456 | + strlen (DEBUG_SUBDIRECTORY) | |
1457 | + strlen ("/") | |
1458 | + strlen (debuglink) | |
1459 | + 1); | |
5b5d99cf JB |
1460 | |
1461 | /* First try in the same directory as the original file. */ | |
1462 | strcpy (debugfile, dir); | |
1db33378 | 1463 | strcat (debugfile, debuglink); |
5b5d99cf | 1464 | |
32a0e547 | 1465 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1466 | return debugfile; |
5417f6dc | 1467 | |
5b5d99cf JB |
1468 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1469 | strcpy (debugfile, dir); | |
1470 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1471 | strcat (debugfile, "/"); | |
1db33378 | 1472 | strcat (debugfile, debuglink); |
5b5d99cf | 1473 | |
32a0e547 | 1474 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1475 | return debugfile; |
5417f6dc | 1476 | |
24ddea62 | 1477 | /* Then try in the global debugfile directories. |
f888f159 | 1478 | |
24ddea62 JK |
1479 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1480 | cause "/..." lookups. */ | |
5417f6dc | 1481 | |
e4ab2fad JK |
1482 | debugdir_vec = dirnames_to_char_ptr_vec (debug_file_directory); |
1483 | back_to = make_cleanup_free_char_ptr_vec (debugdir_vec); | |
24ddea62 | 1484 | |
e4ab2fad JK |
1485 | for (ix = 0; VEC_iterate (char_ptr, debugdir_vec, ix, debugdir); ++ix) |
1486 | { | |
1487 | strcpy (debugfile, debugdir); | |
aa28a74e | 1488 | strcat (debugfile, "/"); |
24ddea62 | 1489 | strcat (debugfile, dir); |
1db33378 | 1490 | strcat (debugfile, debuglink); |
aa28a74e | 1491 | |
32a0e547 | 1492 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
a991ac28 TT |
1493 | { |
1494 | do_cleanups (back_to); | |
1495 | return debugfile; | |
1496 | } | |
24ddea62 JK |
1497 | |
1498 | /* If the file is in the sysroot, try using its base path in the | |
1499 | global debugfile directory. */ | |
1db33378 PP |
1500 | if (canon_dir != NULL |
1501 | && filename_ncmp (canon_dir, gdb_sysroot, | |
0ba1096a | 1502 | strlen (gdb_sysroot)) == 0 |
1db33378 | 1503 | && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)])) |
24ddea62 | 1504 | { |
e4ab2fad | 1505 | strcpy (debugfile, debugdir); |
1db33378 | 1506 | strcat (debugfile, canon_dir + strlen (gdb_sysroot)); |
24ddea62 | 1507 | strcat (debugfile, "/"); |
1db33378 | 1508 | strcat (debugfile, debuglink); |
24ddea62 | 1509 | |
32a0e547 | 1510 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
a991ac28 TT |
1511 | { |
1512 | do_cleanups (back_to); | |
1513 | return debugfile; | |
1514 | } | |
24ddea62 | 1515 | } |
aa28a74e | 1516 | } |
f888f159 | 1517 | |
e4ab2fad | 1518 | do_cleanups (back_to); |
25522fae | 1519 | xfree (debugfile); |
1db33378 PP |
1520 | return NULL; |
1521 | } | |
1522 | ||
7edbb660 | 1523 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1524 | If there were no directory separators in PATH, PATH will be empty |
1525 | string on return. */ | |
1526 | ||
1527 | static void | |
1528 | terminate_after_last_dir_separator (char *path) | |
1529 | { | |
1530 | int i; | |
1531 | ||
1532 | /* Strip off the final filename part, leaving the directory name, | |
1533 | followed by a slash. The directory can be relative or absolute. */ | |
1534 | for (i = strlen(path) - 1; i >= 0; i--) | |
1535 | if (IS_DIR_SEPARATOR (path[i])) | |
1536 | break; | |
1537 | ||
1538 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1539 | path[i + 1] = '\0'; | |
1540 | } | |
1541 | ||
1542 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
1543 | Returns pathname, or NULL. */ | |
1544 | ||
1545 | char * | |
1546 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1547 | { | |
1548 | char *debuglink; | |
1549 | char *dir, *canon_dir; | |
1550 | char *debugfile; | |
1551 | unsigned long crc32; | |
1552 | struct cleanup *cleanups; | |
1553 | ||
cc0ea93c | 1554 | debuglink = bfd_get_debug_link_info (objfile->obfd, &crc32); |
1db33378 PP |
1555 | |
1556 | if (debuglink == NULL) | |
1557 | { | |
1558 | /* There's no separate debug info, hence there's no way we could | |
1559 | load it => no warning. */ | |
1560 | return NULL; | |
1561 | } | |
1562 | ||
71bdabee | 1563 | cleanups = make_cleanup (xfree, debuglink); |
4262abfb | 1564 | dir = xstrdup (objfile_name (objfile)); |
71bdabee | 1565 | make_cleanup (xfree, dir); |
1db33378 PP |
1566 | terminate_after_last_dir_separator (dir); |
1567 | canon_dir = lrealpath (dir); | |
1568 | ||
1569 | debugfile = find_separate_debug_file (dir, canon_dir, debuglink, | |
1570 | crc32, objfile); | |
1571 | xfree (canon_dir); | |
1572 | ||
1573 | if (debugfile == NULL) | |
1574 | { | |
1db33378 PP |
1575 | /* For PR gdb/9538, try again with realpath (if different from the |
1576 | original). */ | |
1577 | ||
1578 | struct stat st_buf; | |
1579 | ||
4262abfb JK |
1580 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1581 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 PP |
1582 | { |
1583 | char *symlink_dir; | |
1584 | ||
4262abfb | 1585 | symlink_dir = lrealpath (objfile_name (objfile)); |
1db33378 PP |
1586 | if (symlink_dir != NULL) |
1587 | { | |
1588 | make_cleanup (xfree, symlink_dir); | |
1589 | terminate_after_last_dir_separator (symlink_dir); | |
1590 | if (strcmp (dir, symlink_dir) != 0) | |
1591 | { | |
1592 | /* Different directory, so try using it. */ | |
1593 | debugfile = find_separate_debug_file (symlink_dir, | |
1594 | symlink_dir, | |
1595 | debuglink, | |
1596 | crc32, | |
1597 | objfile); | |
1598 | } | |
1599 | } | |
1600 | } | |
1db33378 | 1601 | } |
aa28a74e | 1602 | |
1db33378 | 1603 | do_cleanups (cleanups); |
25522fae | 1604 | return debugfile; |
5b5d99cf JB |
1605 | } |
1606 | ||
c906108c SS |
1607 | /* This is the symbol-file command. Read the file, analyze its |
1608 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1609 | the command is rather bizarre: |
1610 | ||
1611 | 1. The function buildargv implements various quoting conventions | |
1612 | which are undocumented and have little or nothing in common with | |
1613 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1614 | ||
1615 | 2. Options are used, which are not generally used in GDB (perhaps | |
1616 | "set mapped on", "set readnow on" would be better) | |
1617 | ||
1618 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1619 | conventions (because it is confusing and inconvenient). */ |
1620 | ||
1621 | void | |
1d8b34a7 | 1622 | symbol_file_command (const char *args, int from_tty) |
c906108c | 1623 | { |
c906108c SS |
1624 | dont_repeat (); |
1625 | ||
1626 | if (args == NULL) | |
1627 | { | |
1adeb98a | 1628 | symbol_file_clear (from_tty); |
c906108c SS |
1629 | } |
1630 | else | |
1631 | { | |
b15cc25c | 1632 | objfile_flags flags = OBJF_USERLOADED; |
ecf45d2c | 1633 | symfile_add_flags add_flags = 0; |
cb2f3a29 MK |
1634 | char *name = NULL; |
1635 | ||
ecf45d2c SL |
1636 | if (from_tty) |
1637 | add_flags |= SYMFILE_VERBOSE; | |
1638 | ||
773a1edc TT |
1639 | gdb_argv built_argv (args); |
1640 | for (char *arg : built_argv) | |
c906108c | 1641 | { |
773a1edc | 1642 | if (strcmp (arg, "-readnow") == 0) |
78a4a9b9 | 1643 | flags |= OBJF_READNOW; |
773a1edc TT |
1644 | else if (*arg == '-') |
1645 | error (_("unknown option `%s'"), arg); | |
78a4a9b9 AC |
1646 | else |
1647 | { | |
773a1edc TT |
1648 | symbol_file_add_main_1 (arg, add_flags, flags); |
1649 | name = arg; | |
78a4a9b9 | 1650 | } |
c906108c SS |
1651 | } |
1652 | ||
1653 | if (name == NULL) | |
cb2f3a29 | 1654 | error (_("no symbol file name was specified")); |
c906108c SS |
1655 | } |
1656 | } | |
1657 | ||
1658 | /* Set the initial language. | |
1659 | ||
cb2f3a29 MK |
1660 | FIXME: A better solution would be to record the language in the |
1661 | psymtab when reading partial symbols, and then use it (if known) to | |
1662 | set the language. This would be a win for formats that encode the | |
1663 | language in an easily discoverable place, such as DWARF. For | |
1664 | stabs, we can jump through hoops looking for specially named | |
1665 | symbols or try to intuit the language from the specific type of | |
1666 | stabs we find, but we can't do that until later when we read in | |
1667 | full symbols. */ | |
c906108c | 1668 | |
8b60591b | 1669 | void |
fba45db2 | 1670 | set_initial_language (void) |
c906108c | 1671 | { |
9e6c82ad | 1672 | enum language lang = main_language (); |
c906108c | 1673 | |
9e6c82ad | 1674 | if (lang == language_unknown) |
01f8c46d | 1675 | { |
bf6d8a91 | 1676 | char *name = main_name (); |
d12307c1 | 1677 | struct symbol *sym = lookup_symbol (name, NULL, VAR_DOMAIN, NULL).symbol; |
f888f159 | 1678 | |
bf6d8a91 TT |
1679 | if (sym != NULL) |
1680 | lang = SYMBOL_LANGUAGE (sym); | |
01f8c46d | 1681 | } |
cb2f3a29 | 1682 | |
ccefe4c4 TT |
1683 | if (lang == language_unknown) |
1684 | { | |
1685 | /* Make C the default language */ | |
1686 | lang = language_c; | |
c906108c | 1687 | } |
ccefe4c4 TT |
1688 | |
1689 | set_language (lang); | |
1690 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1691 | } |
1692 | ||
cb2f3a29 MK |
1693 | /* Open the file specified by NAME and hand it off to BFD for |
1694 | preliminary analysis. Return a newly initialized bfd *, which | |
1695 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1696 | absolute). In case of trouble, error() is called. */ | |
c906108c | 1697 | |
192b62ce | 1698 | gdb_bfd_ref_ptr |
97a41605 | 1699 | symfile_bfd_open (const char *name) |
c906108c | 1700 | { |
97a41605 GB |
1701 | int desc = -1; |
1702 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
c906108c | 1703 | |
97a41605 | 1704 | if (!is_target_filename (name)) |
f1838a98 | 1705 | { |
ee0c3293 | 1706 | char *absolute_name; |
f1838a98 | 1707 | |
ee0c3293 | 1708 | gdb::unique_xmalloc_ptr<char> expanded_name (tilde_expand (name)); |
c906108c | 1709 | |
97a41605 GB |
1710 | /* Look down path for it, allocate 2nd new malloc'd copy. */ |
1711 | desc = openp (getenv ("PATH"), | |
1712 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
ee0c3293 | 1713 | expanded_name.get (), O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1714 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
97a41605 GB |
1715 | if (desc < 0) |
1716 | { | |
ee0c3293 | 1717 | char *exename = (char *) alloca (strlen (expanded_name.get ()) + 5); |
433759f7 | 1718 | |
ee0c3293 | 1719 | strcat (strcpy (exename, expanded_name.get ()), ".exe"); |
97a41605 GB |
1720 | desc = openp (getenv ("PATH"), |
1721 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
1722 | exename, O_RDONLY | O_BINARY, &absolute_name); | |
1723 | } | |
c906108c | 1724 | #endif |
97a41605 | 1725 | if (desc < 0) |
ee0c3293 | 1726 | perror_with_name (expanded_name.get ()); |
cb2f3a29 | 1727 | |
97a41605 GB |
1728 | make_cleanup (xfree, absolute_name); |
1729 | name = absolute_name; | |
1730 | } | |
c906108c | 1731 | |
192b62ce TT |
1732 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (name, gnutarget, desc)); |
1733 | if (sym_bfd == NULL) | |
faab9922 JK |
1734 | error (_("`%s': can't open to read symbols: %s."), name, |
1735 | bfd_errmsg (bfd_get_error ())); | |
97a41605 | 1736 | |
192b62ce TT |
1737 | if (!gdb_bfd_has_target_filename (sym_bfd.get ())) |
1738 | bfd_set_cacheable (sym_bfd.get (), 1); | |
c906108c | 1739 | |
192b62ce TT |
1740 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
1741 | error (_("`%s': can't read symbols: %s."), name, | |
1742 | bfd_errmsg (bfd_get_error ())); | |
cb2f3a29 | 1743 | |
faab9922 JK |
1744 | do_cleanups (back_to); |
1745 | ||
cb2f3a29 | 1746 | return sym_bfd; |
c906108c SS |
1747 | } |
1748 | ||
cb2f3a29 MK |
1749 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1750 | the section was not found. */ | |
1751 | ||
0e931cf0 | 1752 | int |
a121b7c1 | 1753 | get_section_index (struct objfile *objfile, const char *section_name) |
0e931cf0 JB |
1754 | { |
1755 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1756 | |
0e931cf0 JB |
1757 | if (sect) |
1758 | return sect->index; | |
1759 | else | |
1760 | return -1; | |
1761 | } | |
1762 | ||
c256e171 DE |
1763 | /* Link SF into the global symtab_fns list. |
1764 | FLAVOUR is the file format that SF handles. | |
1765 | Called on startup by the _initialize routine in each object file format | |
1766 | reader, to register information about each format the reader is prepared | |
1767 | to handle. */ | |
c906108c SS |
1768 | |
1769 | void | |
c256e171 | 1770 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1771 | { |
905014d7 | 1772 | symtab_fns.emplace_back (flavour, sf); |
c906108c SS |
1773 | } |
1774 | ||
cb2f3a29 MK |
1775 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1776 | either returns or calls error(). The result is an initialized | |
1777 | struct sym_fns in the objfile structure, that contains cached | |
1778 | information about the symbol file. */ | |
c906108c | 1779 | |
00b5771c | 1780 | static const struct sym_fns * |
31d99776 | 1781 | find_sym_fns (bfd *abfd) |
c906108c | 1782 | { |
31d99776 | 1783 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1784 | |
75245b24 MS |
1785 | if (our_flavour == bfd_target_srec_flavour |
1786 | || our_flavour == bfd_target_ihex_flavour | |
1787 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1788 | return NULL; /* No symbols. */ |
75245b24 | 1789 | |
905014d7 SM |
1790 | for (const registered_sym_fns &rsf : symtab_fns) |
1791 | if (our_flavour == rsf.sym_flavour) | |
1792 | return rsf.sym_fns; | |
cb2f3a29 | 1793 | |
8a3fe4f8 | 1794 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1795 | bfd_get_target (abfd)); |
c906108c SS |
1796 | } |
1797 | \f | |
cb2f3a29 | 1798 | |
c906108c SS |
1799 | /* This function runs the load command of our current target. */ |
1800 | ||
1801 | static void | |
fba45db2 | 1802 | load_command (char *arg, int from_tty) |
c906108c | 1803 | { |
5b3fca71 TT |
1804 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
1805 | ||
e5cc9f32 JB |
1806 | dont_repeat (); |
1807 | ||
4487aabf PA |
1808 | /* The user might be reloading because the binary has changed. Take |
1809 | this opportunity to check. */ | |
1810 | reopen_exec_file (); | |
1811 | reread_symbols (); | |
1812 | ||
c906108c | 1813 | if (arg == NULL) |
1986bccd AS |
1814 | { |
1815 | char *parg; | |
1816 | int count = 0; | |
1817 | ||
1818 | parg = arg = get_exec_file (1); | |
1819 | ||
1820 | /* Count how many \ " ' tab space there are in the name. */ | |
1821 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1822 | { | |
1823 | parg++; | |
1824 | count++; | |
1825 | } | |
1826 | ||
1827 | if (count) | |
1828 | { | |
1829 | /* We need to quote this string so buildargv can pull it apart. */ | |
224c3ddb | 1830 | char *temp = (char *) xmalloc (strlen (arg) + count + 1 ); |
1986bccd AS |
1831 | char *ptemp = temp; |
1832 | char *prev; | |
1833 | ||
1834 | make_cleanup (xfree, temp); | |
1835 | ||
1836 | prev = parg = arg; | |
1837 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1838 | { | |
1839 | strncpy (ptemp, prev, parg - prev); | |
1840 | ptemp += parg - prev; | |
1841 | prev = parg++; | |
1842 | *ptemp++ = '\\'; | |
1843 | } | |
1844 | strcpy (ptemp, prev); | |
1845 | ||
1846 | arg = temp; | |
1847 | } | |
1848 | } | |
1849 | ||
c906108c | 1850 | target_load (arg, from_tty); |
2889e661 JB |
1851 | |
1852 | /* After re-loading the executable, we don't really know which | |
1853 | overlays are mapped any more. */ | |
1854 | overlay_cache_invalid = 1; | |
5b3fca71 TT |
1855 | |
1856 | do_cleanups (cleanup); | |
c906108c SS |
1857 | } |
1858 | ||
1859 | /* This version of "load" should be usable for any target. Currently | |
1860 | it is just used for remote targets, not inftarg.c or core files, | |
1861 | on the theory that only in that case is it useful. | |
1862 | ||
1863 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1864 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1865 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1866 | performance compares. */ | |
917317f4 | 1867 | |
917317f4 JM |
1868 | static int validate_download = 0; |
1869 | ||
e4f9b4d5 MS |
1870 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1871 | ||
1872 | static void | |
1873 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1874 | { | |
19ba03f4 | 1875 | bfd_size_type *sum = (bfd_size_type *) data; |
e4f9b4d5 | 1876 | |
2c500098 | 1877 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1878 | } |
1879 | ||
1880 | /* Opaque data for load_section_callback. */ | |
1881 | struct load_section_data { | |
f698ca8e | 1882 | CORE_ADDR load_offset; |
a76d924d DJ |
1883 | struct load_progress_data *progress_data; |
1884 | VEC(memory_write_request_s) *requests; | |
1885 | }; | |
1886 | ||
1887 | /* Opaque data for load_progress. */ | |
1888 | struct load_progress_data { | |
1889 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1890 | unsigned long write_count; |
1891 | unsigned long data_count; | |
1892 | bfd_size_type total_size; | |
a76d924d DJ |
1893 | }; |
1894 | ||
1895 | /* Opaque data for load_progress for a single section. */ | |
1896 | struct load_progress_section_data { | |
1897 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1898 | |
a76d924d | 1899 | /* Per-section data. */ |
cf7a04e8 DJ |
1900 | const char *section_name; |
1901 | ULONGEST section_sent; | |
1902 | ULONGEST section_size; | |
1903 | CORE_ADDR lma; | |
1904 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1905 | }; |
1906 | ||
a76d924d | 1907 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1908 | |
1909 | static void | |
1910 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1911 | { | |
19ba03f4 SM |
1912 | struct load_progress_section_data *args |
1913 | = (struct load_progress_section_data *) untyped_arg; | |
a76d924d DJ |
1914 | struct load_progress_data *totals; |
1915 | ||
1916 | if (args == NULL) | |
1917 | /* Writing padding data. No easy way to get at the cumulative | |
1918 | stats, so just ignore this. */ | |
1919 | return; | |
1920 | ||
1921 | totals = args->cumulative; | |
1922 | ||
1923 | if (bytes == 0 && args->section_sent == 0) | |
1924 | { | |
1925 | /* The write is just starting. Let the user know we've started | |
1926 | this section. */ | |
112e8700 SM |
1927 | current_uiout->message ("Loading section %s, size %s lma %s\n", |
1928 | args->section_name, | |
1929 | hex_string (args->section_size), | |
1930 | paddress (target_gdbarch (), args->lma)); | |
a76d924d DJ |
1931 | return; |
1932 | } | |
cf7a04e8 DJ |
1933 | |
1934 | if (validate_download) | |
1935 | { | |
1936 | /* Broken memories and broken monitors manifest themselves here | |
1937 | when bring new computers to life. This doubles already slow | |
1938 | downloads. */ | |
1939 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1940 | might add a verify_memory() method to the target vector and | |
1941 | then use that. remote.c could implement that method using | |
1942 | the ``qCRC'' packet. */ | |
0efef640 | 1943 | gdb::byte_vector check (bytes); |
cf7a04e8 | 1944 | |
0efef640 | 1945 | if (target_read_memory (args->lma, check.data (), bytes) != 0) |
5af949e3 | 1946 | error (_("Download verify read failed at %s"), |
f5656ead | 1947 | paddress (target_gdbarch (), args->lma)); |
0efef640 | 1948 | if (memcmp (args->buffer, check.data (), bytes) != 0) |
5af949e3 | 1949 | error (_("Download verify compare failed at %s"), |
f5656ead | 1950 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1951 | } |
a76d924d | 1952 | totals->data_count += bytes; |
cf7a04e8 DJ |
1953 | args->lma += bytes; |
1954 | args->buffer += bytes; | |
a76d924d | 1955 | totals->write_count += 1; |
cf7a04e8 | 1956 | args->section_sent += bytes; |
522002f9 | 1957 | if (check_quit_flag () |
cf7a04e8 DJ |
1958 | || (deprecated_ui_load_progress_hook != NULL |
1959 | && deprecated_ui_load_progress_hook (args->section_name, | |
1960 | args->section_sent))) | |
1961 | error (_("Canceled the download")); | |
1962 | ||
1963 | if (deprecated_show_load_progress != NULL) | |
1964 | deprecated_show_load_progress (args->section_name, | |
1965 | args->section_sent, | |
1966 | args->section_size, | |
a76d924d DJ |
1967 | totals->data_count, |
1968 | totals->total_size); | |
cf7a04e8 DJ |
1969 | } |
1970 | ||
e4f9b4d5 MS |
1971 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1972 | ||
1973 | static void | |
1974 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1975 | { | |
a76d924d | 1976 | struct memory_write_request *new_request; |
19ba03f4 | 1977 | struct load_section_data *args = (struct load_section_data *) data; |
a76d924d | 1978 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1979 | bfd_size_type size = bfd_get_section_size (asec); |
1980 | gdb_byte *buffer; | |
cf7a04e8 | 1981 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1982 | |
cf7a04e8 DJ |
1983 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1984 | return; | |
e4f9b4d5 | 1985 | |
cf7a04e8 DJ |
1986 | if (size == 0) |
1987 | return; | |
e4f9b4d5 | 1988 | |
a76d924d DJ |
1989 | new_request = VEC_safe_push (memory_write_request_s, |
1990 | args->requests, NULL); | |
1991 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
8d749320 | 1992 | section_data = XCNEW (struct load_progress_section_data); |
a76d924d | 1993 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; |
3e43a32a MS |
1994 | new_request->end = new_request->begin + size; /* FIXME Should size |
1995 | be in instead? */ | |
224c3ddb | 1996 | new_request->data = (gdb_byte *) xmalloc (size); |
a76d924d | 1997 | new_request->baton = section_data; |
cf7a04e8 | 1998 | |
a76d924d | 1999 | buffer = new_request->data; |
cf7a04e8 | 2000 | |
a76d924d DJ |
2001 | section_data->cumulative = args->progress_data; |
2002 | section_data->section_name = sect_name; | |
2003 | section_data->section_size = size; | |
2004 | section_data->lma = new_request->begin; | |
2005 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
2006 | |
2007 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
2008 | } |
2009 | ||
2010 | /* Clean up an entire memory request vector, including load | |
2011 | data and progress records. */ | |
cf7a04e8 | 2012 | |
a76d924d DJ |
2013 | static void |
2014 | clear_memory_write_data (void *arg) | |
2015 | { | |
19ba03f4 | 2016 | VEC(memory_write_request_s) **vec_p = (VEC(memory_write_request_s) **) arg; |
a76d924d DJ |
2017 | VEC(memory_write_request_s) *vec = *vec_p; |
2018 | int i; | |
2019 | struct memory_write_request *mr; | |
cf7a04e8 | 2020 | |
a76d924d DJ |
2021 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
2022 | { | |
2023 | xfree (mr->data); | |
2024 | xfree (mr->baton); | |
2025 | } | |
2026 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
2027 | } |
2028 | ||
dcb07cfa PA |
2029 | static void print_transfer_performance (struct ui_file *stream, |
2030 | unsigned long data_count, | |
2031 | unsigned long write_count, | |
2032 | std::chrono::steady_clock::duration d); | |
2033 | ||
c906108c | 2034 | void |
9cbe5fff | 2035 | generic_load (const char *args, int from_tty) |
c906108c | 2036 | { |
773a1edc | 2037 | struct cleanup *old_cleanups; |
e4f9b4d5 | 2038 | struct load_section_data cbdata; |
a76d924d | 2039 | struct load_progress_data total_progress; |
79a45e25 | 2040 | struct ui_out *uiout = current_uiout; |
a76d924d | 2041 | |
e4f9b4d5 MS |
2042 | CORE_ADDR entry; |
2043 | ||
a76d924d DJ |
2044 | memset (&cbdata, 0, sizeof (cbdata)); |
2045 | memset (&total_progress, 0, sizeof (total_progress)); | |
2046 | cbdata.progress_data = &total_progress; | |
2047 | ||
773a1edc | 2048 | old_cleanups = make_cleanup (clear_memory_write_data, &cbdata.requests); |
917317f4 | 2049 | |
d1a41061 PP |
2050 | if (args == NULL) |
2051 | error_no_arg (_("file to load")); | |
1986bccd | 2052 | |
773a1edc | 2053 | gdb_argv argv (args); |
1986bccd | 2054 | |
ee0c3293 | 2055 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
1986bccd AS |
2056 | |
2057 | if (argv[1] != NULL) | |
917317f4 | 2058 | { |
f698ca8e | 2059 | const char *endptr; |
ba5f2f8a | 2060 | |
f698ca8e | 2061 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2062 | |
2063 | /* If the last word was not a valid number then | |
2064 | treat it as a file name with spaces in. */ | |
2065 | if (argv[1] == endptr) | |
2066 | error (_("Invalid download offset:%s."), argv[1]); | |
2067 | ||
2068 | if (argv[2] != NULL) | |
2069 | error (_("Too many parameters.")); | |
917317f4 | 2070 | } |
c906108c | 2071 | |
c378eb4e | 2072 | /* Open the file for loading. */ |
ee0c3293 | 2073 | gdb_bfd_ref_ptr loadfile_bfd (gdb_bfd_open (filename.get (), gnutarget, -1)); |
c906108c | 2074 | if (loadfile_bfd == NULL) |
ee0c3293 | 2075 | perror_with_name (filename.get ()); |
917317f4 | 2076 | |
192b62ce | 2077 | if (!bfd_check_format (loadfile_bfd.get (), bfd_object)) |
c906108c | 2078 | { |
ee0c3293 | 2079 | error (_("\"%s\" is not an object file: %s"), filename.get (), |
c906108c SS |
2080 | bfd_errmsg (bfd_get_error ())); |
2081 | } | |
c5aa993b | 2082 | |
192b62ce | 2083 | bfd_map_over_sections (loadfile_bfd.get (), add_section_size_callback, |
a76d924d DJ |
2084 | (void *) &total_progress.total_size); |
2085 | ||
192b62ce | 2086 | bfd_map_over_sections (loadfile_bfd.get (), load_section_callback, &cbdata); |
c2d11a7d | 2087 | |
dcb07cfa PA |
2088 | using namespace std::chrono; |
2089 | ||
2090 | steady_clock::time_point start_time = steady_clock::now (); | |
c906108c | 2091 | |
a76d924d DJ |
2092 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2093 | load_progress) != 0) | |
2094 | error (_("Load failed")); | |
c906108c | 2095 | |
dcb07cfa | 2096 | steady_clock::time_point end_time = steady_clock::now (); |
ba5f2f8a | 2097 | |
192b62ce | 2098 | entry = bfd_get_start_address (loadfile_bfd.get ()); |
8c2b9656 | 2099 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
112e8700 SM |
2100 | uiout->text ("Start address "); |
2101 | uiout->field_fmt ("address", "%s", paddress (target_gdbarch (), entry)); | |
2102 | uiout->text (", load size "); | |
2103 | uiout->field_fmt ("load-size", "%lu", total_progress.data_count); | |
2104 | uiout->text ("\n"); | |
fb14de7b | 2105 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2106 | |
38963c97 DJ |
2107 | /* Reset breakpoints, now that we have changed the load image. For |
2108 | instance, breakpoints may have been set (or reset, by | |
2109 | post_create_inferior) while connected to the target but before we | |
2110 | loaded the program. In that case, the prologue analyzer could | |
2111 | have read instructions from the target to find the right | |
2112 | breakpoint locations. Loading has changed the contents of that | |
2113 | memory. */ | |
2114 | ||
2115 | breakpoint_re_set (); | |
2116 | ||
a76d924d DJ |
2117 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2118 | total_progress.write_count, | |
dcb07cfa | 2119 | end_time - start_time); |
c906108c SS |
2120 | |
2121 | do_cleanups (old_cleanups); | |
2122 | } | |
2123 | ||
dcb07cfa PA |
2124 | /* Report on STREAM the performance of a memory transfer operation, |
2125 | such as 'load'. DATA_COUNT is the number of bytes transferred. | |
2126 | WRITE_COUNT is the number of separate write operations, or 0, if | |
2127 | that information is not available. TIME is how long the operation | |
2128 | lasted. */ | |
c906108c | 2129 | |
dcb07cfa | 2130 | static void |
d9fcf2fb | 2131 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2132 | unsigned long data_count, |
2133 | unsigned long write_count, | |
dcb07cfa | 2134 | std::chrono::steady_clock::duration time) |
917317f4 | 2135 | { |
dcb07cfa | 2136 | using namespace std::chrono; |
79a45e25 | 2137 | struct ui_out *uiout = current_uiout; |
2b71414d | 2138 | |
dcb07cfa | 2139 | milliseconds ms = duration_cast<milliseconds> (time); |
2b71414d | 2140 | |
112e8700 | 2141 | uiout->text ("Transfer rate: "); |
dcb07cfa | 2142 | if (ms.count () > 0) |
8b93c638 | 2143 | { |
dcb07cfa | 2144 | unsigned long rate = ((ULONGEST) data_count * 1000) / ms.count (); |
9f43d28c | 2145 | |
112e8700 | 2146 | if (uiout->is_mi_like_p ()) |
9f43d28c | 2147 | { |
112e8700 SM |
2148 | uiout->field_fmt ("transfer-rate", "%lu", rate * 8); |
2149 | uiout->text (" bits/sec"); | |
9f43d28c DJ |
2150 | } |
2151 | else if (rate < 1024) | |
2152 | { | |
112e8700 SM |
2153 | uiout->field_fmt ("transfer-rate", "%lu", rate); |
2154 | uiout->text (" bytes/sec"); | |
9f43d28c DJ |
2155 | } |
2156 | else | |
2157 | { | |
112e8700 SM |
2158 | uiout->field_fmt ("transfer-rate", "%lu", rate / 1024); |
2159 | uiout->text (" KB/sec"); | |
9f43d28c | 2160 | } |
8b93c638 JM |
2161 | } |
2162 | else | |
2163 | { | |
112e8700 SM |
2164 | uiout->field_fmt ("transferred-bits", "%lu", (data_count * 8)); |
2165 | uiout->text (" bits in <1 sec"); | |
8b93c638 JM |
2166 | } |
2167 | if (write_count > 0) | |
2168 | { | |
112e8700 SM |
2169 | uiout->text (", "); |
2170 | uiout->field_fmt ("write-rate", "%lu", data_count / write_count); | |
2171 | uiout->text (" bytes/write"); | |
8b93c638 | 2172 | } |
112e8700 | 2173 | uiout->text (".\n"); |
c906108c SS |
2174 | } |
2175 | ||
2176 | /* This function allows the addition of incrementally linked object files. | |
2177 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2178 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2179 | special case syntax for the rombug target (Rombug is the boot | |
2180 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2181 | rombug case, the user doesn't need to supply a text address, | |
2182 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2183 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2184 | |
c906108c | 2185 | static void |
2cf311eb | 2186 | add_symbol_file_command (const char *args, int from_tty) |
c906108c | 2187 | { |
5af949e3 | 2188 | struct gdbarch *gdbarch = get_current_arch (); |
ee0c3293 | 2189 | gdb::unique_xmalloc_ptr<char> filename; |
c906108c | 2190 | char *arg; |
2acceee2 JM |
2191 | int argcnt = 0; |
2192 | int sec_num = 0; | |
db162d44 EZ |
2193 | int expecting_sec_name = 0; |
2194 | int expecting_sec_addr = 0; | |
76ad5e1e | 2195 | struct objfile *objf; |
b15cc25c PA |
2196 | objfile_flags flags = OBJF_USERLOADED | OBJF_SHARED; |
2197 | symfile_add_flags add_flags = 0; | |
2198 | ||
2199 | if (from_tty) | |
2200 | add_flags |= SYMFILE_VERBOSE; | |
db162d44 | 2201 | |
a39a16c4 | 2202 | struct sect_opt |
2acceee2 | 2203 | { |
a121b7c1 PA |
2204 | const char *name; |
2205 | const char *value; | |
a39a16c4 | 2206 | }; |
db162d44 | 2207 | |
a39a16c4 | 2208 | struct section_addr_info *section_addrs; |
f978cb06 | 2209 | std::vector<sect_opt> sect_opts; |
3017564a | 2210 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2211 | |
c906108c SS |
2212 | dont_repeat (); |
2213 | ||
2214 | if (args == NULL) | |
8a3fe4f8 | 2215 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2216 | |
773a1edc | 2217 | gdb_argv argv (args); |
db162d44 | 2218 | |
5b96932b AS |
2219 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2220 | { | |
c378eb4e | 2221 | /* Process the argument. */ |
db162d44 | 2222 | if (argcnt == 0) |
c906108c | 2223 | { |
c378eb4e | 2224 | /* The first argument is the file name. */ |
ee0c3293 | 2225 | filename.reset (tilde_expand (arg)); |
c906108c | 2226 | } |
41dc8db8 MB |
2227 | else if (argcnt == 1) |
2228 | { | |
2229 | /* The second argument is always the text address at which | |
2230 | to load the program. */ | |
f978cb06 TT |
2231 | sect_opt sect = { ".text", arg }; |
2232 | sect_opts.push_back (sect); | |
41dc8db8 | 2233 | } |
db162d44 | 2234 | else |
41dc8db8 MB |
2235 | { |
2236 | /* It's an option (starting with '-') or it's an argument | |
2237 | to an option. */ | |
41dc8db8 MB |
2238 | if (expecting_sec_name) |
2239 | { | |
f978cb06 TT |
2240 | sect_opt sect = { arg, NULL }; |
2241 | sect_opts.push_back (sect); | |
41dc8db8 MB |
2242 | expecting_sec_name = 0; |
2243 | } | |
2244 | else if (expecting_sec_addr) | |
2245 | { | |
f978cb06 | 2246 | sect_opts.back ().value = arg; |
41dc8db8 | 2247 | expecting_sec_addr = 0; |
41dc8db8 MB |
2248 | } |
2249 | else if (strcmp (arg, "-readnow") == 0) | |
2250 | flags |= OBJF_READNOW; | |
2251 | else if (strcmp (arg, "-s") == 0) | |
2252 | { | |
2253 | expecting_sec_name = 1; | |
2254 | expecting_sec_addr = 1; | |
2255 | } | |
2256 | else | |
2257 | error (_("USAGE: add-symbol-file <filename> <textaddress>" | |
2258 | " [-readnow] [-s <secname> <addr>]*")); | |
2259 | } | |
c906108c | 2260 | } |
c906108c | 2261 | |
927890d0 JB |
2262 | /* This command takes at least two arguments. The first one is a |
2263 | filename, and the second is the address where this file has been | |
2264 | loaded. Abort now if this address hasn't been provided by the | |
2265 | user. */ | |
f978cb06 | 2266 | if (sect_opts.empty ()) |
ee0c3293 TT |
2267 | error (_("The address where %s has been loaded is missing"), |
2268 | filename.get ()); | |
927890d0 | 2269 | |
c378eb4e | 2270 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2271 | a sect_addr_info structure to be passed around to other |
2272 | functions. We have to split this up into separate print | |
bb599908 | 2273 | statements because hex_string returns a local static |
c378eb4e | 2274 | string. */ |
5417f6dc | 2275 | |
ee0c3293 TT |
2276 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), |
2277 | filename.get ()); | |
f978cb06 | 2278 | section_addrs = alloc_section_addr_info (sect_opts.size ()); |
a39a16c4 | 2279 | make_cleanup (xfree, section_addrs); |
f978cb06 | 2280 | for (sect_opt § : sect_opts) |
c906108c | 2281 | { |
db162d44 | 2282 | CORE_ADDR addr; |
f978cb06 TT |
2283 | const char *val = sect.value; |
2284 | const char *sec = sect.name; | |
5417f6dc | 2285 | |
ae822768 | 2286 | addr = parse_and_eval_address (val); |
db162d44 | 2287 | |
db162d44 | 2288 | /* Here we store the section offsets in the order they were |
c378eb4e | 2289 | entered on the command line. */ |
a121b7c1 | 2290 | section_addrs->other[sec_num].name = (char *) sec; |
a39a16c4 | 2291 | section_addrs->other[sec_num].addr = addr; |
5af949e3 UW |
2292 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2293 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2294 | sec_num++; |
2295 | ||
5417f6dc | 2296 | /* The object's sections are initialized when a |
db162d44 | 2297 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2298 | This happens in reread_symbols. |
db162d44 EZ |
2299 | At this point, we don't know what file type this is, |
2300 | so we can't determine what section names are valid. */ | |
2acceee2 | 2301 | } |
d76488d8 | 2302 | section_addrs->num_sections = sec_num; |
db162d44 | 2303 | |
2acceee2 | 2304 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2305 | error (_("Not confirmed.")); |
c906108c | 2306 | |
ee0c3293 | 2307 | objf = symbol_file_add (filename.get (), add_flags, section_addrs, flags); |
76ad5e1e NB |
2308 | |
2309 | add_target_sections_of_objfile (objf); | |
c906108c SS |
2310 | |
2311 | /* Getting new symbols may change our opinion about what is | |
2312 | frameless. */ | |
2313 | reinit_frame_cache (); | |
db162d44 | 2314 | do_cleanups (my_cleanups); |
c906108c SS |
2315 | } |
2316 | \f | |
70992597 | 2317 | |
63644780 NB |
2318 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2319 | ||
2320 | static void | |
2cf311eb | 2321 | remove_symbol_file_command (const char *args, int from_tty) |
63644780 | 2322 | { |
63644780 | 2323 | struct objfile *objf = NULL; |
63644780 | 2324 | struct program_space *pspace = current_program_space; |
63644780 NB |
2325 | |
2326 | dont_repeat (); | |
2327 | ||
2328 | if (args == NULL) | |
2329 | error (_("remove-symbol-file: no symbol file provided")); | |
2330 | ||
773a1edc | 2331 | gdb_argv argv (args); |
63644780 NB |
2332 | |
2333 | if (strcmp (argv[0], "-a") == 0) | |
2334 | { | |
2335 | /* Interpret the next argument as an address. */ | |
2336 | CORE_ADDR addr; | |
2337 | ||
2338 | if (argv[1] == NULL) | |
2339 | error (_("Missing address argument")); | |
2340 | ||
2341 | if (argv[2] != NULL) | |
2342 | error (_("Junk after %s"), argv[1]); | |
2343 | ||
2344 | addr = parse_and_eval_address (argv[1]); | |
2345 | ||
2346 | ALL_OBJFILES (objf) | |
2347 | { | |
d03de421 PA |
2348 | if ((objf->flags & OBJF_USERLOADED) != 0 |
2349 | && (objf->flags & OBJF_SHARED) != 0 | |
63644780 NB |
2350 | && objf->pspace == pspace && is_addr_in_objfile (addr, objf)) |
2351 | break; | |
2352 | } | |
2353 | } | |
2354 | else if (argv[0] != NULL) | |
2355 | { | |
2356 | /* Interpret the current argument as a file name. */ | |
63644780 NB |
2357 | |
2358 | if (argv[1] != NULL) | |
2359 | error (_("Junk after %s"), argv[0]); | |
2360 | ||
ee0c3293 | 2361 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
63644780 NB |
2362 | |
2363 | ALL_OBJFILES (objf) | |
2364 | { | |
d03de421 PA |
2365 | if ((objf->flags & OBJF_USERLOADED) != 0 |
2366 | && (objf->flags & OBJF_SHARED) != 0 | |
63644780 | 2367 | && objf->pspace == pspace |
ee0c3293 | 2368 | && filename_cmp (filename.get (), objfile_name (objf)) == 0) |
63644780 NB |
2369 | break; |
2370 | } | |
2371 | } | |
2372 | ||
2373 | if (objf == NULL) | |
2374 | error (_("No symbol file found")); | |
2375 | ||
2376 | if (from_tty | |
2377 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2378 | objfile_name (objf))) | |
2379 | error (_("Not confirmed.")); | |
2380 | ||
9e86da07 | 2381 | delete objf; |
63644780 | 2382 | clear_symtab_users (0); |
63644780 NB |
2383 | } |
2384 | ||
c906108c | 2385 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2386 | |
c906108c | 2387 | void |
fba45db2 | 2388 | reread_symbols (void) |
c906108c SS |
2389 | { |
2390 | struct objfile *objfile; | |
2391 | long new_modtime; | |
c906108c SS |
2392 | struct stat new_statbuf; |
2393 | int res; | |
4c404b8b | 2394 | std::vector<struct objfile *> new_objfiles; |
c906108c SS |
2395 | |
2396 | /* With the addition of shared libraries, this should be modified, | |
2397 | the load time should be saved in the partial symbol tables, since | |
2398 | different tables may come from different source files. FIXME. | |
2399 | This routine should then walk down each partial symbol table | |
c378eb4e | 2400 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2401 | |
c5aa993b JM |
2402 | for (objfile = object_files; objfile; objfile = objfile->next) |
2403 | { | |
9cce227f TG |
2404 | if (objfile->obfd == NULL) |
2405 | continue; | |
2406 | ||
2407 | /* Separate debug objfiles are handled in the main objfile. */ | |
2408 | if (objfile->separate_debug_objfile_backlink) | |
2409 | continue; | |
2410 | ||
02aeec7b JB |
2411 | /* If this object is from an archive (what you usually create with |
2412 | `ar', often called a `static library' on most systems, though | |
2413 | a `shared library' on AIX is also an archive), then you should | |
2414 | stat on the archive name, not member name. */ | |
9cce227f TG |
2415 | if (objfile->obfd->my_archive) |
2416 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2417 | else | |
4262abfb | 2418 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2419 | if (res != 0) |
2420 | { | |
c378eb4e | 2421 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
9cce227f | 2422 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
4262abfb | 2423 | objfile_name (objfile)); |
9cce227f TG |
2424 | continue; |
2425 | } | |
2426 | new_modtime = new_statbuf.st_mtime; | |
2427 | if (new_modtime != objfile->mtime) | |
2428 | { | |
2429 | struct cleanup *old_cleanups; | |
2430 | struct section_offsets *offsets; | |
2431 | int num_offsets; | |
24ba069a | 2432 | char *original_name; |
9cce227f TG |
2433 | |
2434 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
4262abfb | 2435 | objfile_name (objfile)); |
9cce227f TG |
2436 | |
2437 | /* There are various functions like symbol_file_add, | |
2438 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2439 | appear to do what we want. But they have various other | |
2440 | effects which we *don't* want. So we just do stuff | |
2441 | ourselves. We don't worry about mapped files (for one thing, | |
2442 | any mapped file will be out of date). */ | |
2443 | ||
2444 | /* If we get an error, blow away this objfile (not sure if | |
2445 | that is the correct response for things like shared | |
2446 | libraries). */ | |
2447 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2448 | /* We need to do this whenever any symbols go away. */ | |
2449 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2450 | ||
0ba1096a KT |
2451 | if (exec_bfd != NULL |
2452 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2453 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2454 | { |
2455 | /* Reload EXEC_BFD without asking anything. */ | |
2456 | ||
2457 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2458 | } | |
2459 | ||
f6eeced0 JK |
2460 | /* Keep the calls order approx. the same as in free_objfile. */ |
2461 | ||
2462 | /* Free the separate debug objfiles. It will be | |
2463 | automatically recreated by sym_read. */ | |
2464 | free_objfile_separate_debug (objfile); | |
2465 | ||
2466 | /* Remove any references to this objfile in the global | |
2467 | value lists. */ | |
2468 | preserve_values (objfile); | |
2469 | ||
2470 | /* Nuke all the state that we will re-read. Much of the following | |
2471 | code which sets things to NULL really is necessary to tell | |
2472 | other parts of GDB that there is nothing currently there. | |
2473 | ||
2474 | Try to keep the freeing order compatible with free_objfile. */ | |
2475 | ||
2476 | if (objfile->sf != NULL) | |
2477 | { | |
2478 | (*objfile->sf->sym_finish) (objfile); | |
2479 | } | |
2480 | ||
2481 | clear_objfile_data (objfile); | |
2482 | ||
e1507e95 | 2483 | /* Clean up any state BFD has sitting around. */ |
a4453b7e | 2484 | { |
192b62ce | 2485 | gdb_bfd_ref_ptr obfd (objfile->obfd); |
d3846e71 | 2486 | char *obfd_filename; |
a4453b7e TT |
2487 | |
2488 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2489 | /* Open the new BFD before freeing the old one, so that | |
2490 | the filename remains live. */ | |
192b62ce TT |
2491 | gdb_bfd_ref_ptr temp (gdb_bfd_open (obfd_filename, gnutarget, -1)); |
2492 | objfile->obfd = temp.release (); | |
e1507e95 | 2493 | if (objfile->obfd == NULL) |
192b62ce | 2494 | error (_("Can't open %s to read symbols."), obfd_filename); |
a4453b7e TT |
2495 | } |
2496 | ||
24ba069a JK |
2497 | original_name = xstrdup (objfile->original_name); |
2498 | make_cleanup (xfree, original_name); | |
2499 | ||
9cce227f TG |
2500 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2501 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
4262abfb | 2502 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2503 | bfd_errmsg (bfd_get_error ())); |
2504 | ||
2505 | /* Save the offsets, we will nuke them with the rest of the | |
2506 | objfile_obstack. */ | |
2507 | num_offsets = objfile->num_sections; | |
2508 | offsets = ((struct section_offsets *) | |
2509 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2510 | memcpy (offsets, objfile->section_offsets, | |
2511 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2512 | ||
9cce227f TG |
2513 | /* FIXME: Do we have to free a whole linked list, or is this |
2514 | enough? */ | |
af5bf4ad SM |
2515 | objfile->global_psymbols.clear (); |
2516 | objfile->static_psymbols.clear (); | |
9cce227f | 2517 | |
c378eb4e | 2518 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2519 | psymbol_bcache_free (objfile->psymbol_cache); |
2520 | objfile->psymbol_cache = psymbol_bcache_init (); | |
41664b45 DG |
2521 | |
2522 | /* NB: after this call to obstack_free, objfiles_changed | |
2523 | will need to be called (see discussion below). */ | |
9cce227f TG |
2524 | obstack_free (&objfile->objfile_obstack, 0); |
2525 | objfile->sections = NULL; | |
43f3e411 | 2526 | objfile->compunit_symtabs = NULL; |
9cce227f TG |
2527 | objfile->psymtabs = NULL; |
2528 | objfile->psymtabs_addrmap = NULL; | |
2529 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2530 | objfile->template_symbols = NULL; |
9cce227f | 2531 | |
9cce227f TG |
2532 | /* obstack_init also initializes the obstack so it is |
2533 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2534 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2535 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2536 | |
846060df JB |
2537 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2538 | data on the objfile's obstack (if sharing data across | |
2539 | multiple users is not possible), so it's important to | |
2540 | do it *after* the obstack has been initialized. */ | |
2541 | set_objfile_per_bfd (objfile); | |
2542 | ||
224c3ddb SM |
2543 | objfile->original_name |
2544 | = (char *) obstack_copy0 (&objfile->objfile_obstack, original_name, | |
2545 | strlen (original_name)); | |
24ba069a | 2546 | |
779bd270 DE |
2547 | /* Reset the sym_fns pointer. The ELF reader can change it |
2548 | based on whether .gdb_index is present, and we need it to | |
2549 | start over. PR symtab/15885 */ | |
8fb8eb5c | 2550 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
779bd270 | 2551 | |
d82ea6a8 | 2552 | build_objfile_section_table (objfile); |
9cce227f TG |
2553 | terminate_minimal_symbol_table (objfile); |
2554 | ||
2555 | /* We use the same section offsets as from last time. I'm not | |
2556 | sure whether that is always correct for shared libraries. */ | |
2557 | objfile->section_offsets = (struct section_offsets *) | |
2558 | obstack_alloc (&objfile->objfile_obstack, | |
2559 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2560 | memcpy (objfile->section_offsets, offsets, | |
2561 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2562 | objfile->num_sections = num_offsets; | |
2563 | ||
2564 | /* What the hell is sym_new_init for, anyway? The concept of | |
2565 | distinguishing between the main file and additional files | |
2566 | in this way seems rather dubious. */ | |
2567 | if (objfile == symfile_objfile) | |
c906108c | 2568 | { |
9cce227f | 2569 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2570 | } |
9cce227f TG |
2571 | |
2572 | (*objfile->sf->sym_init) (objfile); | |
2573 | clear_complaints (&symfile_complaints, 1, 1); | |
608e2dbb TT |
2574 | |
2575 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
41664b45 DG |
2576 | |
2577 | /* We are about to read new symbols and potentially also | |
2578 | DWARF information. Some targets may want to pass addresses | |
2579 | read from DWARF DIE's through an adjustment function before | |
2580 | saving them, like MIPS, which may call into | |
2581 | "find_pc_section". When called, that function will make | |
2582 | use of per-objfile program space data. | |
2583 | ||
2584 | Since we discarded our section information above, we have | |
2585 | dangling pointers in the per-objfile program space data | |
2586 | structure. Force GDB to update the section mapping | |
2587 | information by letting it know the objfile has changed, | |
2588 | making the dangling pointers point to correct data | |
2589 | again. */ | |
2590 | ||
2591 | objfiles_changed (); | |
2592 | ||
608e2dbb | 2593 | read_symbols (objfile, 0); |
b11896a5 | 2594 | |
9cce227f | 2595 | if (!objfile_has_symbols (objfile)) |
c906108c | 2596 | { |
9cce227f TG |
2597 | wrap_here (""); |
2598 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2599 | wrap_here (""); | |
c5aa993b | 2600 | } |
9cce227f TG |
2601 | |
2602 | /* We're done reading the symbol file; finish off complaints. */ | |
2603 | clear_complaints (&symfile_complaints, 0, 1); | |
2604 | ||
2605 | /* Getting new symbols may change our opinion about what is | |
2606 | frameless. */ | |
2607 | ||
2608 | reinit_frame_cache (); | |
2609 | ||
2610 | /* Discard cleanups as symbol reading was successful. */ | |
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 | |
26c41df3 | 2672 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c | 2673 | { |
c906108c SS |
2674 | char *cp = ext_args; |
2675 | enum language lang; | |
2676 | ||
c378eb4e | 2677 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2678 | if (*cp != '.') |
8a3fe4f8 | 2679 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2680 | |
2681 | /* Find end of first arg. */ | |
c5aa993b | 2682 | while (*cp && !isspace (*cp)) |
c906108c SS |
2683 | cp++; |
2684 | ||
2685 | if (*cp == '\0') | |
3e43a32a MS |
2686 | error (_("'%s': two arguments required -- " |
2687 | "filename extension and language"), | |
c906108c SS |
2688 | ext_args); |
2689 | ||
c378eb4e | 2690 | /* Null-terminate first arg. */ |
c5aa993b | 2691 | *cp++ = '\0'; |
c906108c SS |
2692 | |
2693 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2694 | cp = skip_spaces (cp); |
c906108c SS |
2695 | |
2696 | if (*cp == '\0') | |
3e43a32a MS |
2697 | error (_("'%s': two arguments required -- " |
2698 | "filename extension and language"), | |
c906108c SS |
2699 | ext_args); |
2700 | ||
2701 | /* Lookup the language from among those we know. */ | |
2702 | lang = language_enum (cp); | |
2703 | ||
593e3209 | 2704 | auto it = filename_language_table.begin (); |
c906108c | 2705 | /* Now lookup the filename extension: do we already know it? */ |
593e3209 | 2706 | for (; it != filename_language_table.end (); it++) |
3fcf0b0d | 2707 | { |
593e3209 | 2708 | if (it->ext == ext_args) |
3fcf0b0d TT |
2709 | break; |
2710 | } | |
c906108c | 2711 | |
593e3209 | 2712 | if (it == filename_language_table.end ()) |
c906108c | 2713 | { |
c378eb4e | 2714 | /* New file extension. */ |
c906108c SS |
2715 | add_filename_language (ext_args, lang); |
2716 | } | |
2717 | else | |
2718 | { | |
c378eb4e | 2719 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2720 | |
2721 | /* if (from_tty) */ | |
2722 | /* query ("Really make files of type %s '%s'?", */ | |
2723 | /* ext_args, language_str (lang)); */ | |
2724 | ||
593e3209 | 2725 | it->lang = lang; |
c906108c SS |
2726 | } |
2727 | } | |
2728 | ||
2729 | static void | |
fba45db2 | 2730 | info_ext_lang_command (char *args, int from_tty) |
c906108c | 2731 | { |
a3f17187 | 2732 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c | 2733 | printf_filtered ("\n\n"); |
593e3209 SM |
2734 | for (const filename_language &entry : filename_language_table) |
2735 | printf_filtered ("\t%s\t- %s\n", entry.ext.c_str (), | |
2736 | language_str (entry.lang)); | |
c906108c SS |
2737 | } |
2738 | ||
c906108c | 2739 | enum language |
dd786858 | 2740 | deduce_language_from_filename (const char *filename) |
c906108c | 2741 | { |
e6a959d6 | 2742 | const char *cp; |
c906108c SS |
2743 | |
2744 | if (filename != NULL) | |
2745 | if ((cp = strrchr (filename, '.')) != NULL) | |
3fcf0b0d | 2746 | { |
593e3209 SM |
2747 | for (const filename_language &entry : filename_language_table) |
2748 | if (entry.ext == cp) | |
2749 | return entry.lang; | |
3fcf0b0d | 2750 | } |
c906108c SS |
2751 | |
2752 | return language_unknown; | |
2753 | } | |
2754 | \f | |
43f3e411 DE |
2755 | /* Allocate and initialize a new symbol table. |
2756 | CUST is from the result of allocate_compunit_symtab. */ | |
c906108c SS |
2757 | |
2758 | struct symtab * | |
43f3e411 | 2759 | allocate_symtab (struct compunit_symtab *cust, const char *filename) |
c906108c | 2760 | { |
43f3e411 DE |
2761 | struct objfile *objfile = cust->objfile; |
2762 | struct symtab *symtab | |
2763 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symtab); | |
c906108c | 2764 | |
19ba03f4 SM |
2765 | symtab->filename |
2766 | = (const char *) bcache (filename, strlen (filename) + 1, | |
21ea9eec | 2767 | objfile->per_bfd->filename_cache); |
c5aa993b JM |
2768 | symtab->fullname = NULL; |
2769 | symtab->language = deduce_language_from_filename (filename); | |
c906108c | 2770 | |
db0fec5c DE |
2771 | /* This can be very verbose with lots of headers. |
2772 | Only print at higher debug levels. */ | |
2773 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2774 | { |
2775 | /* Be a bit clever with debugging messages, and don't print objfile | |
2776 | every time, only when it changes. */ | |
2777 | static char *last_objfile_name = NULL; | |
2778 | ||
2779 | if (last_objfile_name == NULL | |
4262abfb | 2780 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
45cfd468 DE |
2781 | { |
2782 | xfree (last_objfile_name); | |
4262abfb | 2783 | last_objfile_name = xstrdup (objfile_name (objfile)); |
45cfd468 DE |
2784 | fprintf_unfiltered (gdb_stdlog, |
2785 | "Creating one or more symtabs for objfile %s ...\n", | |
2786 | last_objfile_name); | |
2787 | } | |
2788 | fprintf_unfiltered (gdb_stdlog, | |
b3dbbd6f PM |
2789 | "Created symtab %s for module %s.\n", |
2790 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2791 | } |
2792 | ||
43f3e411 DE |
2793 | /* Add it to CUST's list of symtabs. */ |
2794 | if (cust->filetabs == NULL) | |
2795 | { | |
2796 | cust->filetabs = symtab; | |
2797 | cust->last_filetab = symtab; | |
2798 | } | |
2799 | else | |
2800 | { | |
2801 | cust->last_filetab->next = symtab; | |
2802 | cust->last_filetab = symtab; | |
2803 | } | |
2804 | ||
2805 | /* Backlink to the containing compunit symtab. */ | |
2806 | symtab->compunit_symtab = cust; | |
2807 | ||
2808 | return symtab; | |
2809 | } | |
2810 | ||
2811 | /* Allocate and initialize a new compunit. | |
2812 | NAME is the name of the main source file, if there is one, or some | |
2813 | descriptive text if there are no source files. */ | |
2814 | ||
2815 | struct compunit_symtab * | |
2816 | allocate_compunit_symtab (struct objfile *objfile, const char *name) | |
2817 | { | |
2818 | struct compunit_symtab *cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2819 | struct compunit_symtab); | |
2820 | const char *saved_name; | |
2821 | ||
2822 | cu->objfile = objfile; | |
2823 | ||
2824 | /* The name we record here is only for display/debugging purposes. | |
2825 | Just save the basename to avoid path issues (too long for display, | |
2826 | relative vs absolute, etc.). */ | |
2827 | saved_name = lbasename (name); | |
224c3ddb SM |
2828 | cu->name |
2829 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, saved_name, | |
2830 | strlen (saved_name)); | |
43f3e411 DE |
2831 | |
2832 | COMPUNIT_DEBUGFORMAT (cu) = "unknown"; | |
2833 | ||
2834 | if (symtab_create_debug) | |
2835 | { | |
2836 | fprintf_unfiltered (gdb_stdlog, | |
2837 | "Created compunit symtab %s for %s.\n", | |
2838 | host_address_to_string (cu), | |
2839 | cu->name); | |
2840 | } | |
2841 | ||
2842 | return cu; | |
2843 | } | |
2844 | ||
2845 | /* Hook CU to the objfile it comes from. */ | |
2846 | ||
2847 | void | |
2848 | add_compunit_symtab_to_objfile (struct compunit_symtab *cu) | |
2849 | { | |
2850 | cu->next = cu->objfile->compunit_symtabs; | |
2851 | cu->objfile->compunit_symtabs = cu; | |
c906108c | 2852 | } |
c906108c | 2853 | \f |
c5aa993b | 2854 | |
b15cc25c PA |
2855 | /* Reset all data structures in gdb which may contain references to |
2856 | symbol table data. */ | |
c906108c SS |
2857 | |
2858 | void | |
b15cc25c | 2859 | clear_symtab_users (symfile_add_flags add_flags) |
c906108c SS |
2860 | { |
2861 | /* Someday, we should do better than this, by only blowing away | |
2862 | the things that really need to be blown. */ | |
c0501be5 DJ |
2863 | |
2864 | /* Clear the "current" symtab first, because it is no longer valid. | |
2865 | breakpoint_re_set may try to access the current symtab. */ | |
2866 | clear_current_source_symtab_and_line (); | |
2867 | ||
c906108c | 2868 | clear_displays (); |
1bfeeb0f | 2869 | clear_last_displayed_sal (); |
c906108c | 2870 | clear_pc_function_cache (); |
06d3b283 | 2871 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2872 | |
2873 | /* Clear globals which might have pointed into a removed objfile. | |
2874 | FIXME: It's not clear which of these are supposed to persist | |
2875 | between expressions and which ought to be reset each time. */ | |
2876 | expression_context_block = NULL; | |
2877 | innermost_block = NULL; | |
8756216b DP |
2878 | |
2879 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2880 | varobj_invalidate (); | |
2881 | ||
e700d1b2 JB |
2882 | /* Now that the various caches have been cleared, we can re_set |
2883 | our breakpoints without risking it using stale data. */ | |
2884 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) | |
2885 | breakpoint_re_set (); | |
c906108c SS |
2886 | } |
2887 | ||
74b7792f AC |
2888 | static void |
2889 | clear_symtab_users_cleanup (void *ignore) | |
2890 | { | |
c1e56572 | 2891 | clear_symtab_users (0); |
74b7792f | 2892 | } |
c906108c | 2893 | \f |
c906108c SS |
2894 | /* OVERLAYS: |
2895 | The following code implements an abstraction for debugging overlay sections. | |
2896 | ||
2897 | The target model is as follows: | |
2898 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2899 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2900 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2901 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2902 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2903 | sections should be considered to be mapped from the VMA to the LMA. |
2904 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2905 | For instance, if a section has been mapped then its contents |
c5aa993b | 2906 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2907 | |
2908 | Two levels of debugger support for overlays are available. One is | |
2909 | "manual", in which the debugger relies on the user to tell it which | |
2910 | overlays are currently mapped. This level of support is | |
2911 | implemented entirely in the core debugger, and the information about | |
2912 | whether a section is mapped is kept in the objfile->obj_section table. | |
2913 | ||
2914 | The second level of support is "automatic", and is only available if | |
2915 | the target-specific code provides functionality to read the target's | |
2916 | overlay mapping table, and translate its contents for the debugger | |
2917 | (by updating the mapped state information in the obj_section tables). | |
2918 | ||
2919 | The interface is as follows: | |
c5aa993b JM |
2920 | User commands: |
2921 | overlay map <name> -- tell gdb to consider this section mapped | |
2922 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2923 | overlay list -- list the sections that GDB thinks are mapped | |
2924 | overlay read-target -- get the target's state of what's mapped | |
2925 | overlay off/manual/auto -- set overlay debugging state | |
2926 | Functional interface: | |
2927 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2928 | section, return that section. | |
5417f6dc | 2929 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2930 | the pc, either in its VMA or its LMA |
714835d5 | 2931 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2932 | section_is_overlay(sect): true if section's VMA != LMA |
2933 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2934 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2935 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2936 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2937 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2938 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2939 | either in VMA or LMA depending on whether | |
c378eb4e | 2940 | the symbol's section is currently mapped. */ |
c906108c SS |
2941 | |
2942 | /* Overlay debugging state: */ | |
2943 | ||
d874f1e2 | 2944 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2945 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2946 | |
c906108c | 2947 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2948 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2949 | SECTION is loaded at an address different from where it will "run". */ |
2950 | ||
2951 | int | |
714835d5 | 2952 | section_is_overlay (struct obj_section *section) |
c906108c | 2953 | { |
714835d5 UW |
2954 | if (overlay_debugging && section) |
2955 | { | |
2956 | bfd *abfd = section->objfile->obfd; | |
2957 | asection *bfd_section = section->the_bfd_section; | |
f888f159 | 2958 | |
714835d5 UW |
2959 | if (bfd_section_lma (abfd, bfd_section) != 0 |
2960 | && bfd_section_lma (abfd, bfd_section) | |
2961 | != bfd_section_vma (abfd, bfd_section)) | |
2962 | return 1; | |
2963 | } | |
c906108c SS |
2964 | |
2965 | return 0; | |
2966 | } | |
2967 | ||
2968 | /* Function: overlay_invalidate_all (void) | |
2969 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2970 | ||
2971 | static void | |
fba45db2 | 2972 | overlay_invalidate_all (void) |
c906108c | 2973 | { |
c5aa993b | 2974 | struct objfile *objfile; |
c906108c SS |
2975 | struct obj_section *sect; |
2976 | ||
2977 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
2978 | if (section_is_overlay (sect)) |
2979 | sect->ovly_mapped = -1; | |
c906108c SS |
2980 | } |
2981 | ||
714835d5 | 2982 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 2983 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
2984 | |
2985 | Access to the ovly_mapped flag is restricted to this function, so | |
2986 | that we can do automatic update. If the global flag | |
2987 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2988 | overlay_invalidate_all. If the mapped state of the particular | |
2989 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2990 | ||
714835d5 UW |
2991 | int |
2992 | section_is_mapped (struct obj_section *osect) | |
c906108c | 2993 | { |
9216df95 UW |
2994 | struct gdbarch *gdbarch; |
2995 | ||
714835d5 | 2996 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
2997 | return 0; |
2998 | ||
c5aa993b | 2999 | switch (overlay_debugging) |
c906108c SS |
3000 | { |
3001 | default: | |
d874f1e2 | 3002 | case ovly_off: |
c5aa993b | 3003 | return 0; /* overlay debugging off */ |
d874f1e2 | 3004 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3005 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3006 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3007 | gdbarch = get_objfile_arch (osect->objfile); |
3008 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3009 | { |
3010 | if (overlay_cache_invalid) | |
3011 | { | |
3012 | overlay_invalidate_all (); | |
3013 | overlay_cache_invalid = 0; | |
3014 | } | |
3015 | if (osect->ovly_mapped == -1) | |
9216df95 | 3016 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
3017 | } |
3018 | /* fall thru to manual case */ | |
d874f1e2 | 3019 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3020 | return osect->ovly_mapped == 1; |
3021 | } | |
3022 | } | |
3023 | ||
c906108c SS |
3024 | /* Function: pc_in_unmapped_range |
3025 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3026 | ||
3027 | CORE_ADDR | |
714835d5 | 3028 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3029 | { |
714835d5 UW |
3030 | if (section_is_overlay (section)) |
3031 | { | |
3032 | bfd *abfd = section->objfile->obfd; | |
3033 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3034 | |
714835d5 UW |
3035 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3036 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3037 | CORE_ADDR offset = obj_section_offset (section); | |
3038 | ||
3039 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3040 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3041 | return 1; | |
3042 | } | |
c906108c | 3043 | |
c906108c SS |
3044 | return 0; |
3045 | } | |
3046 | ||
3047 | /* Function: pc_in_mapped_range | |
3048 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3049 | ||
3050 | CORE_ADDR | |
714835d5 | 3051 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3052 | { |
714835d5 UW |
3053 | if (section_is_overlay (section)) |
3054 | { | |
3055 | if (obj_section_addr (section) <= pc | |
3056 | && pc < obj_section_endaddr (section)) | |
3057 | return 1; | |
3058 | } | |
c906108c | 3059 | |
c906108c SS |
3060 | return 0; |
3061 | } | |
3062 | ||
9ec8e6a0 JB |
3063 | /* Return true if the mapped ranges of sections A and B overlap, false |
3064 | otherwise. */ | |
3b7bacac | 3065 | |
b9362cc7 | 3066 | static int |
714835d5 | 3067 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3068 | { |
714835d5 UW |
3069 | CORE_ADDR a_start = obj_section_addr (a); |
3070 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3071 | CORE_ADDR b_start = obj_section_addr (b); | |
3072 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3073 | |
3074 | return (a_start < b_end && b_start < a_end); | |
3075 | } | |
3076 | ||
c906108c SS |
3077 | /* Function: overlay_unmapped_address (PC, SECTION) |
3078 | Returns the address corresponding to PC in the unmapped (load) range. | |
3079 | May be the same as PC. */ | |
3080 | ||
3081 | CORE_ADDR | |
714835d5 | 3082 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3083 | { |
714835d5 UW |
3084 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3085 | { | |
3086 | bfd *abfd = section->objfile->obfd; | |
3087 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3088 | |
714835d5 UW |
3089 | return pc + bfd_section_lma (abfd, bfd_section) |
3090 | - bfd_section_vma (abfd, bfd_section); | |
3091 | } | |
c906108c SS |
3092 | |
3093 | return pc; | |
3094 | } | |
3095 | ||
3096 | /* Function: overlay_mapped_address (PC, SECTION) | |
3097 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3098 | May be the same as PC. */ | |
3099 | ||
3100 | CORE_ADDR | |
714835d5 | 3101 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3102 | { |
714835d5 UW |
3103 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3104 | { | |
3105 | bfd *abfd = section->objfile->obfd; | |
3106 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3107 | |
714835d5 UW |
3108 | return pc + bfd_section_vma (abfd, bfd_section) |
3109 | - bfd_section_lma (abfd, bfd_section); | |
3110 | } | |
c906108c SS |
3111 | |
3112 | return pc; | |
3113 | } | |
3114 | ||
5417f6dc | 3115 | /* Function: symbol_overlayed_address |
c906108c SS |
3116 | Return one of two addresses (relative to the VMA or to the LMA), |
3117 | depending on whether the section is mapped or not. */ | |
3118 | ||
c5aa993b | 3119 | CORE_ADDR |
714835d5 | 3120 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3121 | { |
3122 | if (overlay_debugging) | |
3123 | { | |
c378eb4e | 3124 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3125 | if (section == 0) |
3126 | return address; | |
c378eb4e MS |
3127 | /* If the symbol's section is not an overlay, just return its |
3128 | address. */ | |
c906108c SS |
3129 | if (!section_is_overlay (section)) |
3130 | return address; | |
c378eb4e | 3131 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3132 | if (section_is_mapped (section)) |
3133 | return address; | |
3134 | /* | |
3135 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3136 | * then return its LOADED address rather than its vma address!! | |
3137 | */ | |
3138 | return overlay_unmapped_address (address, section); | |
3139 | } | |
3140 | return address; | |
3141 | } | |
3142 | ||
5417f6dc | 3143 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3144 | Return the best-match overlay section for PC: |
3145 | If PC matches a mapped overlay section's VMA, return that section. | |
3146 | Else if PC matches an unmapped section's VMA, return that section. | |
3147 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3148 | ||
714835d5 | 3149 | struct obj_section * |
fba45db2 | 3150 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3151 | { |
c5aa993b | 3152 | struct objfile *objfile; |
c906108c SS |
3153 | struct obj_section *osect, *best_match = NULL; |
3154 | ||
3155 | if (overlay_debugging) | |
b631e59b KT |
3156 | { |
3157 | ALL_OBJSECTIONS (objfile, osect) | |
3158 | if (section_is_overlay (osect)) | |
c5aa993b | 3159 | { |
b631e59b KT |
3160 | if (pc_in_mapped_range (pc, osect)) |
3161 | { | |
3162 | if (section_is_mapped (osect)) | |
3163 | return osect; | |
3164 | else | |
3165 | best_match = osect; | |
3166 | } | |
3167 | else if (pc_in_unmapped_range (pc, osect)) | |
c5aa993b JM |
3168 | best_match = osect; |
3169 | } | |
b631e59b | 3170 | } |
714835d5 | 3171 | return best_match; |
c906108c SS |
3172 | } |
3173 | ||
3174 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3175 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3176 | currently marked as MAPPED, return that section. Else return NULL. */ |
3177 | ||
714835d5 | 3178 | struct obj_section * |
fba45db2 | 3179 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3180 | { |
c5aa993b | 3181 | struct objfile *objfile; |
c906108c SS |
3182 | struct obj_section *osect; |
3183 | ||
3184 | if (overlay_debugging) | |
b631e59b KT |
3185 | { |
3186 | ALL_OBJSECTIONS (objfile, osect) | |
3187 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) | |
3188 | return osect; | |
3189 | } | |
c906108c SS |
3190 | |
3191 | return NULL; | |
3192 | } | |
3193 | ||
3194 | /* Function: list_overlays_command | |
c378eb4e | 3195 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3196 | |
5d3055ad | 3197 | static void |
2cf311eb | 3198 | list_overlays_command (const char *args, int from_tty) |
c906108c | 3199 | { |
c5aa993b JM |
3200 | int nmapped = 0; |
3201 | struct objfile *objfile; | |
c906108c SS |
3202 | struct obj_section *osect; |
3203 | ||
3204 | if (overlay_debugging) | |
b631e59b KT |
3205 | { |
3206 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3207 | if (section_is_mapped (osect)) |
b631e59b KT |
3208 | { |
3209 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3210 | const char *name; | |
3211 | bfd_vma lma, vma; | |
3212 | int size; | |
3213 | ||
3214 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3215 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
3216 | size = bfd_get_section_size (osect->the_bfd_section); | |
3217 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
3218 | ||
3219 | printf_filtered ("Section %s, loaded at ", name); | |
3220 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); | |
3221 | puts_filtered (" - "); | |
3222 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); | |
3223 | printf_filtered (", mapped at "); | |
3224 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); | |
3225 | puts_filtered (" - "); | |
3226 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); | |
3227 | puts_filtered ("\n"); | |
3228 | ||
3229 | nmapped++; | |
3230 | } | |
3231 | } | |
c906108c | 3232 | if (nmapped == 0) |
a3f17187 | 3233 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3234 | } |
3235 | ||
3236 | /* Function: map_overlay_command | |
3237 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3238 | ||
5d3055ad | 3239 | static void |
2cf311eb | 3240 | map_overlay_command (const char *args, int from_tty) |
c906108c | 3241 | { |
c5aa993b JM |
3242 | struct objfile *objfile, *objfile2; |
3243 | struct obj_section *sec, *sec2; | |
c906108c SS |
3244 | |
3245 | if (!overlay_debugging) | |
3e43a32a MS |
3246 | error (_("Overlay debugging not enabled. Use " |
3247 | "either the 'overlay auto' or\n" | |
3248 | "the 'overlay manual' command.")); | |
c906108c SS |
3249 | |
3250 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3251 | error (_("Argument required: name of an overlay section")); |
c906108c | 3252 | |
c378eb4e | 3253 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3254 | ALL_OBJSECTIONS (objfile, sec) |
3255 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3256 | { |
c378eb4e | 3257 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3258 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3259 | continue; /* not an overlay section */ |
3260 | ||
c378eb4e | 3261 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3262 | sec->ovly_mapped = 1; |
3263 | ||
3264 | /* Next, make a pass and unmap any sections that are | |
3265 | overlapped by this new section: */ | |
3266 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3267 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3268 | { |
3269 | if (info_verbose) | |
a3f17187 | 3270 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3271 | bfd_section_name (objfile->obfd, |
3272 | sec2->the_bfd_section)); | |
c378eb4e | 3273 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3274 | } |
3275 | return; | |
3276 | } | |
8a3fe4f8 | 3277 | error (_("No overlay section called %s"), args); |
c906108c SS |
3278 | } |
3279 | ||
3280 | /* Function: unmap_overlay_command | |
5417f6dc | 3281 | Mark the overlay section as unmapped |
c906108c SS |
3282 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3283 | ||
5d3055ad | 3284 | static void |
2cf311eb | 3285 | unmap_overlay_command (const char *args, int from_tty) |
c906108c | 3286 | { |
c5aa993b | 3287 | struct objfile *objfile; |
7a270e0c | 3288 | struct obj_section *sec = NULL; |
c906108c SS |
3289 | |
3290 | if (!overlay_debugging) | |
3e43a32a MS |
3291 | error (_("Overlay debugging not enabled. " |
3292 | "Use either the 'overlay auto' or\n" | |
3293 | "the 'overlay manual' command.")); | |
c906108c SS |
3294 | |
3295 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3296 | error (_("Argument required: name of an overlay section")); |
c906108c | 3297 | |
c378eb4e | 3298 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3299 | ALL_OBJSECTIONS (objfile, sec) |
3300 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3301 | { |
3302 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3303 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3304 | sec->ovly_mapped = 0; |
3305 | return; | |
3306 | } | |
8a3fe4f8 | 3307 | error (_("No overlay section called %s"), args); |
c906108c SS |
3308 | } |
3309 | ||
3310 | /* Function: overlay_auto_command | |
3311 | A utility command to turn on overlay debugging. | |
c378eb4e | 3312 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3313 | |
3314 | static void | |
2cf311eb | 3315 | overlay_auto_command (const char *args, int from_tty) |
c906108c | 3316 | { |
d874f1e2 | 3317 | overlay_debugging = ovly_auto; |
1900040c | 3318 | enable_overlay_breakpoints (); |
c906108c | 3319 | if (info_verbose) |
a3f17187 | 3320 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3321 | } |
3322 | ||
3323 | /* Function: overlay_manual_command | |
3324 | A utility command to turn on overlay debugging. | |
c378eb4e | 3325 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3326 | |
3327 | static void | |
2cf311eb | 3328 | overlay_manual_command (const char *args, int from_tty) |
c906108c | 3329 | { |
d874f1e2 | 3330 | overlay_debugging = ovly_on; |
1900040c | 3331 | disable_overlay_breakpoints (); |
c906108c | 3332 | if (info_verbose) |
a3f17187 | 3333 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3334 | } |
3335 | ||
3336 | /* Function: overlay_off_command | |
3337 | A utility command to turn on overlay debugging. | |
c378eb4e | 3338 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3339 | |
3340 | static void | |
2cf311eb | 3341 | overlay_off_command (const char *args, int from_tty) |
c906108c | 3342 | { |
d874f1e2 | 3343 | overlay_debugging = ovly_off; |
1900040c | 3344 | disable_overlay_breakpoints (); |
c906108c | 3345 | if (info_verbose) |
a3f17187 | 3346 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3347 | } |
3348 | ||
3349 | static void | |
2cf311eb | 3350 | overlay_load_command (const char *args, int from_tty) |
c906108c | 3351 | { |
e17c207e UW |
3352 | struct gdbarch *gdbarch = get_current_arch (); |
3353 | ||
3354 | if (gdbarch_overlay_update_p (gdbarch)) | |
3355 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3356 | else |
8a3fe4f8 | 3357 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3358 | } |
3359 | ||
3360 | /* Function: overlay_command | |
c378eb4e | 3361 | A place-holder for a mis-typed command. */ |
c906108c | 3362 | |
c378eb4e | 3363 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3364 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3365 | |
3366 | static void | |
981a3fb3 | 3367 | overlay_command (const char *args, int from_tty) |
c906108c | 3368 | { |
c5aa993b | 3369 | printf_unfiltered |
c906108c | 3370 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
635c7e8a | 3371 | help_list (overlaylist, "overlay ", all_commands, gdb_stdout); |
c906108c SS |
3372 | } |
3373 | ||
c906108c SS |
3374 | /* Target Overlays for the "Simplest" overlay manager: |
3375 | ||
5417f6dc RM |
3376 | This is GDB's default target overlay layer. It works with the |
3377 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3378 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3379 | so targets that use a different runtime overlay manager can |
c906108c SS |
3380 | substitute their own overlay_update function and take over the |
3381 | function pointer. | |
3382 | ||
3383 | The overlay_update function pokes around in the target's data structures | |
3384 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3385 | this information. | |
3386 | ||
3387 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3388 | unsigned _novlys; /# number of overlay sections #/ |
3389 | unsigned _ovly_table[_novlys][4] = { | |
438e1e42 | 3390 | {VMA, OSIZE, LMA, MAPPED}, /# one entry per overlay section #/ |
c5aa993b JM |
3391 | {..., ..., ..., ...}, |
3392 | } | |
3393 | unsigned _novly_regions; /# number of overlay regions #/ | |
3394 | unsigned _ovly_region_table[_novly_regions][3] = { | |
438e1e42 | 3395 | {VMA, OSIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ |
c5aa993b JM |
3396 | {..., ..., ...}, |
3397 | } | |
c906108c SS |
3398 | These functions will attempt to update GDB's mappedness state in the |
3399 | symbol section table, based on the target's mappedness state. | |
3400 | ||
3401 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3402 | attempt to detect when the cached copy is invalidated. The main | |
3403 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3404 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3405 | the target (whenever possible). */ |
c906108c SS |
3406 | |
3407 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3408 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3409 | static unsigned cache_novlys = 0; |
c906108c | 3410 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3411 | enum ovly_index |
3412 | { | |
438e1e42 | 3413 | VMA, OSIZE, LMA, MAPPED |
c5aa993b | 3414 | }; |
c906108c | 3415 | |
c378eb4e | 3416 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3417 | |
c906108c | 3418 | static void |
fba45db2 | 3419 | simple_free_overlay_table (void) |
c906108c SS |
3420 | { |
3421 | if (cache_ovly_table) | |
b8c9b27d | 3422 | xfree (cache_ovly_table); |
c5aa993b | 3423 | cache_novlys = 0; |
c906108c SS |
3424 | cache_ovly_table = NULL; |
3425 | cache_ovly_table_base = 0; | |
3426 | } | |
3427 | ||
9216df95 | 3428 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3429 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3430 | |
c906108c | 3431 | static void |
9216df95 | 3432 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3433 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3434 | { |
c378eb4e | 3435 | /* FIXME (alloca): Not safe if array is very large. */ |
224c3ddb | 3436 | gdb_byte *buf = (gdb_byte *) alloca (len * size); |
c5aa993b | 3437 | int i; |
c906108c | 3438 | |
9216df95 | 3439 | read_memory (memaddr, buf, len * size); |
c906108c | 3440 | for (i = 0; i < len; i++) |
e17a4113 | 3441 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3442 | } |
3443 | ||
3444 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3445 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3446 | |
c5aa993b | 3447 | static int |
fba45db2 | 3448 | simple_read_overlay_table (void) |
c906108c | 3449 | { |
3b7344d5 | 3450 | struct bound_minimal_symbol novlys_msym; |
7c7b6655 | 3451 | struct bound_minimal_symbol ovly_table_msym; |
9216df95 UW |
3452 | struct gdbarch *gdbarch; |
3453 | int word_size; | |
e17a4113 | 3454 | enum bfd_endian byte_order; |
c906108c SS |
3455 | |
3456 | simple_free_overlay_table (); | |
9b27852e | 3457 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
3b7344d5 | 3458 | if (! novlys_msym.minsym) |
c906108c | 3459 | { |
8a3fe4f8 | 3460 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3461 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3462 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3463 | return 0; |
c906108c | 3464 | } |
0d43edd1 | 3465 | |
7c7b6655 TT |
3466 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3467 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3468 | { |
8a3fe4f8 | 3469 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3470 | "`_ovly_table' array\n" |
8a3fe4f8 | 3471 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3472 | return 0; |
3473 | } | |
3474 | ||
7c7b6655 | 3475 | gdbarch = get_objfile_arch (ovly_table_msym.objfile); |
9216df95 | 3476 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3477 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3478 | |
77e371c0 TT |
3479 | cache_novlys = read_memory_integer (BMSYMBOL_VALUE_ADDRESS (novlys_msym), |
3480 | 4, byte_order); | |
0d43edd1 | 3481 | cache_ovly_table |
224c3ddb | 3482 | = (unsigned int (*)[4]) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); |
77e371c0 | 3483 | cache_ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym); |
0d43edd1 | 3484 | read_target_long_array (cache_ovly_table_base, |
777ea8f1 | 3485 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3486 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3487 | |
c5aa993b | 3488 | return 1; /* SUCCESS */ |
c906108c SS |
3489 | } |
3490 | ||
5417f6dc | 3491 | /* Function: simple_overlay_update_1 |
c906108c SS |
3492 | A helper function for simple_overlay_update. Assuming a cached copy |
3493 | of _ovly_table exists, look through it to find an entry whose vma, | |
3494 | lma and size match those of OSECT. Re-read the entry and make sure | |
3495 | it still matches OSECT (else the table may no longer be valid). | |
3496 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3497 | success, 0 for failure. */ | |
3498 | ||
3499 | static int | |
fba45db2 | 3500 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c | 3501 | { |
764c99c1 | 3502 | int i; |
fbd35540 MS |
3503 | bfd *obfd = osect->objfile->obfd; |
3504 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3505 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3506 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3507 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3508 | |
c906108c | 3509 | for (i = 0; i < cache_novlys; i++) |
fbd35540 | 3510 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3511 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c | 3512 | { |
9216df95 UW |
3513 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3514 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3515 | 4, word_size, byte_order); |
fbd35540 | 3516 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3517 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c SS |
3518 | { |
3519 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3520 | return 1; | |
3521 | } | |
c378eb4e | 3522 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3523 | return 0; |
3524 | } | |
3525 | return 0; | |
3526 | } | |
3527 | ||
3528 | /* Function: simple_overlay_update | |
5417f6dc RM |
3529 | If OSECT is NULL, then update all sections' mapped state |
3530 | (after re-reading the entire target _ovly_table). | |
3531 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3532 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3533 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3534 | re-read the entire cache, and go ahead and update all sections. */ |
3535 | ||
1c772458 | 3536 | void |
fba45db2 | 3537 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3538 | { |
c5aa993b | 3539 | struct objfile *objfile; |
c906108c | 3540 | |
c378eb4e | 3541 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3542 | if (osect) |
c378eb4e | 3543 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3544 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3545 | { |
3546 | /* Does its cached location match what's currently in the | |
3547 | symtab? */ | |
3b7344d5 | 3548 | struct bound_minimal_symbol minsym |
9cc89665 MS |
3549 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
3550 | ||
3b7344d5 | 3551 | if (minsym.minsym == NULL) |
9cc89665 MS |
3552 | error (_("Error reading inferior's overlay table: couldn't " |
3553 | "find `_ovly_table' array\n" | |
3554 | "in inferior. Use `overlay manual' mode.")); | |
3555 | ||
77e371c0 | 3556 | if (cache_ovly_table_base == BMSYMBOL_VALUE_ADDRESS (minsym)) |
9cc89665 MS |
3557 | /* Then go ahead and try to look up this single section in |
3558 | the cache. */ | |
3559 | if (simple_overlay_update_1 (osect)) | |
3560 | /* Found it! We're done. */ | |
3561 | return; | |
3562 | } | |
c906108c SS |
3563 | |
3564 | /* Cached table no good: need to read the entire table anew. | |
3565 | Or else we want all the sections, in which case it's actually | |
3566 | more efficient to read the whole table in one block anyway. */ | |
3567 | ||
0d43edd1 JB |
3568 | if (! simple_read_overlay_table ()) |
3569 | return; | |
3570 | ||
c378eb4e | 3571 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3572 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3573 | if (section_is_overlay (osect)) |
c5aa993b | 3574 | { |
764c99c1 | 3575 | int i; |
fbd35540 MS |
3576 | bfd *obfd = osect->objfile->obfd; |
3577 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3578 | |
c5aa993b | 3579 | for (i = 0; i < cache_novlys; i++) |
fbd35540 | 3580 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3581 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c378eb4e | 3582 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3583 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3584 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3585 | } |
3586 | } | |
c906108c SS |
3587 | } |
3588 | ||
086df311 DJ |
3589 | /* Set the output sections and output offsets for section SECTP in |
3590 | ABFD. The relocation code in BFD will read these offsets, so we | |
3591 | need to be sure they're initialized. We map each section to itself, | |
3592 | with no offset; this means that SECTP->vma will be honored. */ | |
3593 | ||
3594 | static void | |
3595 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3596 | { | |
3597 | sectp->output_section = sectp; | |
3598 | sectp->output_offset = 0; | |
3599 | } | |
3600 | ||
ac8035ab TG |
3601 | /* Default implementation for sym_relocate. */ |
3602 | ||
ac8035ab TG |
3603 | bfd_byte * |
3604 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3605 | bfd_byte *buf) | |
3606 | { | |
3019eac3 DE |
3607 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3608 | DWO file. */ | |
3609 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3610 | |
3611 | /* We're only interested in sections with relocation | |
3612 | information. */ | |
3613 | if ((sectp->flags & SEC_RELOC) == 0) | |
3614 | return NULL; | |
3615 | ||
3616 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3617 | all sections begin at 0. */ | |
3618 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3619 | ||
3620 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3621 | } | |
3622 | ||
086df311 DJ |
3623 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3624 | contents are stored in BUF if it is non-NULL, or returned in a | |
3625 | malloc'd buffer otherwise. | |
3626 | ||
3627 | For some platforms and debug info formats, shared libraries contain | |
3628 | relocations against the debug sections (particularly for DWARF-2; | |
3629 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3630 | the version of the linker in use). Also, ELF object files naturally | |
3631 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3632 | the relocations in order to get the locations of symbols correct. |
3633 | Another example that may require relocation processing, is the | |
3634 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3635 | debug section. */ | |
086df311 DJ |
3636 | |
3637 | bfd_byte * | |
ac8035ab TG |
3638 | symfile_relocate_debug_section (struct objfile *objfile, |
3639 | asection *sectp, bfd_byte *buf) | |
086df311 | 3640 | { |
ac8035ab | 3641 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3642 | |
ac8035ab | 3643 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3644 | } |
c906108c | 3645 | |
31d99776 DJ |
3646 | struct symfile_segment_data * |
3647 | get_symfile_segment_data (bfd *abfd) | |
3648 | { | |
00b5771c | 3649 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3650 | |
3651 | if (sf == NULL) | |
3652 | return NULL; | |
3653 | ||
3654 | return sf->sym_segments (abfd); | |
3655 | } | |
3656 | ||
3657 | void | |
3658 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3659 | { | |
3660 | xfree (data->segment_bases); | |
3661 | xfree (data->segment_sizes); | |
3662 | xfree (data->segment_info); | |
3663 | xfree (data); | |
3664 | } | |
3665 | ||
28c32713 JB |
3666 | /* Given: |
3667 | - DATA, containing segment addresses from the object file ABFD, and | |
3668 | the mapping from ABFD's sections onto the segments that own them, | |
3669 | and | |
3670 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3671 | segment addresses reported by the target, | |
3672 | store the appropriate offsets for each section in OFFSETS. | |
3673 | ||
3674 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3675 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3676 | ||
8d385431 DJ |
3677 | If there are more entries, then ignore the extra. The target may |
3678 | not be able to distinguish between an empty data segment and a | |
3679 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3680 | |
31d99776 | 3681 | int |
3189cb12 DE |
3682 | symfile_map_offsets_to_segments (bfd *abfd, |
3683 | const struct symfile_segment_data *data, | |
31d99776 DJ |
3684 | struct section_offsets *offsets, |
3685 | int num_segment_bases, | |
3686 | const CORE_ADDR *segment_bases) | |
3687 | { | |
3688 | int i; | |
3689 | asection *sect; | |
3690 | ||
28c32713 JB |
3691 | /* It doesn't make sense to call this function unless you have some |
3692 | segment base addresses. */ | |
202b96c1 | 3693 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3694 | |
31d99776 DJ |
3695 | /* If we do not have segment mappings for the object file, we |
3696 | can not relocate it by segments. */ | |
3697 | gdb_assert (data != NULL); | |
3698 | gdb_assert (data->num_segments > 0); | |
3699 | ||
31d99776 DJ |
3700 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3701 | { | |
31d99776 DJ |
3702 | int which = data->segment_info[i]; |
3703 | ||
28c32713 JB |
3704 | gdb_assert (0 <= which && which <= data->num_segments); |
3705 | ||
3706 | /* Don't bother computing offsets for sections that aren't | |
3707 | loaded as part of any segment. */ | |
3708 | if (! which) | |
3709 | continue; | |
3710 | ||
3711 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3712 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3713 | if (which > num_segment_bases) |
28c32713 | 3714 | which = num_segment_bases; |
31d99776 | 3715 | |
28c32713 JB |
3716 | offsets->offsets[i] = (segment_bases[which - 1] |
3717 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3718 | } |
3719 | ||
3720 | return 1; | |
3721 | } | |
3722 | ||
3723 | static void | |
3724 | symfile_find_segment_sections (struct objfile *objfile) | |
3725 | { | |
3726 | bfd *abfd = objfile->obfd; | |
3727 | int i; | |
3728 | asection *sect; | |
3729 | struct symfile_segment_data *data; | |
3730 | ||
3731 | data = get_symfile_segment_data (objfile->obfd); | |
3732 | if (data == NULL) | |
3733 | return; | |
3734 | ||
3735 | if (data->num_segments != 1 && data->num_segments != 2) | |
3736 | { | |
3737 | free_symfile_segment_data (data); | |
3738 | return; | |
3739 | } | |
3740 | ||
3741 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3742 | { | |
31d99776 DJ |
3743 | int which = data->segment_info[i]; |
3744 | ||
3745 | if (which == 1) | |
3746 | { | |
3747 | if (objfile->sect_index_text == -1) | |
3748 | objfile->sect_index_text = sect->index; | |
3749 | ||
3750 | if (objfile->sect_index_rodata == -1) | |
3751 | objfile->sect_index_rodata = sect->index; | |
3752 | } | |
3753 | else if (which == 2) | |
3754 | { | |
3755 | if (objfile->sect_index_data == -1) | |
3756 | objfile->sect_index_data = sect->index; | |
3757 | ||
3758 | if (objfile->sect_index_bss == -1) | |
3759 | objfile->sect_index_bss = sect->index; | |
3760 | } | |
3761 | } | |
3762 | ||
3763 | free_symfile_segment_data (data); | |
3764 | } | |
3765 | ||
76ad5e1e NB |
3766 | /* Listen for free_objfile events. */ |
3767 | ||
3768 | static void | |
3769 | symfile_free_objfile (struct objfile *objfile) | |
3770 | { | |
c33b2f12 MM |
3771 | /* Remove the target sections owned by this objfile. */ |
3772 | if (objfile != NULL) | |
76ad5e1e NB |
3773 | remove_target_sections ((void *) objfile); |
3774 | } | |
3775 | ||
540c2971 DE |
3776 | /* Wrapper around the quick_symbol_functions expand_symtabs_matching "method". |
3777 | Expand all symtabs that match the specified criteria. | |
3778 | See quick_symbol_functions.expand_symtabs_matching for details. */ | |
3779 | ||
3780 | void | |
14bc53a8 PA |
3781 | expand_symtabs_matching |
3782 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
3783 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3784 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
3785 | enum search_domain kind) | |
540c2971 DE |
3786 | { |
3787 | struct objfile *objfile; | |
3788 | ||
3789 | ALL_OBJFILES (objfile) | |
3790 | { | |
3791 | if (objfile->sf) | |
bb4142cf | 3792 | objfile->sf->qf->expand_symtabs_matching (objfile, file_matcher, |
276d885b | 3793 | symbol_matcher, |
14bc53a8 | 3794 | expansion_notify, kind); |
540c2971 DE |
3795 | } |
3796 | } | |
3797 | ||
3798 | /* Wrapper around the quick_symbol_functions map_symbol_filenames "method". | |
3799 | Map function FUN over every file. | |
3800 | See quick_symbol_functions.map_symbol_filenames for details. */ | |
3801 | ||
3802 | void | |
bb4142cf DE |
3803 | map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
3804 | int need_fullname) | |
540c2971 DE |
3805 | { |
3806 | struct objfile *objfile; | |
3807 | ||
3808 | ALL_OBJFILES (objfile) | |
3809 | { | |
3810 | if (objfile->sf) | |
3811 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data, | |
3812 | need_fullname); | |
3813 | } | |
3814 | } | |
3815 | ||
32fa66eb SM |
3816 | #if GDB_SELF_TEST |
3817 | ||
3818 | namespace selftests { | |
3819 | namespace filename_language { | |
3820 | ||
32fa66eb SM |
3821 | static void test_filename_language () |
3822 | { | |
3823 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3824 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3825 | |
3826 | /* Test deducing an unknown extension. */ | |
3827 | language lang = deduce_language_from_filename ("myfile.blah"); | |
3828 | SELF_CHECK (lang == language_unknown); | |
3829 | ||
3830 | /* Test deducing a known extension. */ | |
3831 | lang = deduce_language_from_filename ("myfile.c"); | |
3832 | SELF_CHECK (lang == language_c); | |
3833 | ||
3834 | /* Test adding a new extension using the internal API. */ | |
3835 | add_filename_language (".blah", language_pascal); | |
3836 | lang = deduce_language_from_filename ("myfile.blah"); | |
3837 | SELF_CHECK (lang == language_pascal); | |
3838 | } | |
3839 | ||
3840 | static void | |
3841 | test_set_ext_lang_command () | |
3842 | { | |
3843 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3844 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3845 | |
3846 | /* Confirm that the .hello extension is not known. */ | |
3847 | language lang = deduce_language_from_filename ("cake.hello"); | |
3848 | SELF_CHECK (lang == language_unknown); | |
3849 | ||
3850 | /* Test adding a new extension using the CLI command. */ | |
3851 | gdb::unique_xmalloc_ptr<char> args_holder (xstrdup (".hello rust")); | |
3852 | ext_args = args_holder.get (); | |
3853 | set_ext_lang_command (NULL, 1, NULL); | |
3854 | ||
3855 | lang = deduce_language_from_filename ("cake.hello"); | |
3856 | SELF_CHECK (lang == language_rust); | |
3857 | ||
3858 | /* Test overriding an existing extension using the CLI command. */ | |
593e3209 | 3859 | int size_before = filename_language_table.size (); |
32fa66eb SM |
3860 | args_holder.reset (xstrdup (".hello pascal")); |
3861 | ext_args = args_holder.get (); | |
3862 | set_ext_lang_command (NULL, 1, NULL); | |
593e3209 | 3863 | int size_after = filename_language_table.size (); |
32fa66eb SM |
3864 | |
3865 | lang = deduce_language_from_filename ("cake.hello"); | |
3866 | SELF_CHECK (lang == language_pascal); | |
3867 | SELF_CHECK (size_before == size_after); | |
3868 | } | |
3869 | ||
3870 | } /* namespace filename_language */ | |
3871 | } /* namespace selftests */ | |
3872 | ||
3873 | #endif /* GDB_SELF_TEST */ | |
3874 | ||
c906108c | 3875 | void |
fba45db2 | 3876 | _initialize_symfile (void) |
c906108c SS |
3877 | { |
3878 | struct cmd_list_element *c; | |
c5aa993b | 3879 | |
76ad5e1e NB |
3880 | observer_attach_free_objfile (symfile_free_objfile); |
3881 | ||
1a966eab AC |
3882 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3883 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3884 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3885 | to execute."), &cmdlist); |
5ba2abeb | 3886 | set_cmd_completer (c, filename_completer); |
c906108c | 3887 | |
1a966eab | 3888 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3889 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
3e43a32a MS |
3890 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR>\ |
3891 | ...]\nADDR is the starting address of the file's text.\n\ | |
db162d44 EZ |
3892 | The optional arguments are section-name section-address pairs and\n\ |
3893 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3894 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3895 | &cmdlist); |
5ba2abeb | 3896 | set_cmd_completer (c, filename_completer); |
c906108c | 3897 | |
63644780 NB |
3898 | c = add_cmd ("remove-symbol-file", class_files, |
3899 | remove_symbol_file_command, _("\ | |
3900 | Remove a symbol file added via the add-symbol-file command.\n\ | |
3901 | Usage: remove-symbol-file FILENAME\n\ | |
3902 | remove-symbol-file -a ADDRESS\n\ | |
3903 | The file to remove can be identified by its filename or by an address\n\ | |
3904 | that lies within the boundaries of this symbol file in memory."), | |
3905 | &cmdlist); | |
3906 | ||
1a966eab AC |
3907 | c = add_cmd ("load", class_files, load_command, _("\ |
3908 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd | 3909 | for access from GDB.\n\ |
5cf30ebf LM |
3910 | An optional load OFFSET may also be given as a literal address.\n\ |
3911 | When OFFSET is provided, FILE must also be provided. FILE can be provided\n\ | |
3912 | on its own.\n\ | |
3913 | Usage: load [FILE] [OFFSET]"), &cmdlist); | |
5ba2abeb | 3914 | set_cmd_completer (c, filename_completer); |
c906108c | 3915 | |
c5aa993b | 3916 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3917 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3918 | "overlay ", 0, &cmdlist); |
3919 | ||
3920 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3921 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3922 | ||
c5aa993b | 3923 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3924 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3925 | |
c5aa993b | 3926 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3927 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3928 | |
c5aa993b | 3929 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3930 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3931 | |
c5aa993b | 3932 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3933 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3934 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3935 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3936 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3937 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3938 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3939 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3940 | |
3941 | /* Filename extension to source language lookup table: */ | |
26c41df3 AC |
3942 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3943 | &ext_args, _("\ | |
3944 | Set mapping between filename extension and source language."), _("\ | |
3945 | Show mapping between filename extension and source language."), _("\ | |
3946 | Usage: set extension-language .foo bar"), | |
3947 | set_ext_lang_command, | |
920d2a44 | 3948 | show_ext_args, |
26c41df3 | 3949 | &setlist, &showlist); |
c906108c | 3950 | |
c5aa993b | 3951 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3952 | _("All filename extensions associated with a source language.")); |
917317f4 | 3953 | |
525226b5 AC |
3954 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3955 | &debug_file_directory, _("\ | |
24ddea62 JK |
3956 | Set the directories where separate debug symbols are searched for."), _("\ |
3957 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3958 | Separate debug symbols are first searched for in the same\n\ |
3959 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3960 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3961 | each global debug-file-directory component prepended."), |
525226b5 | 3962 | NULL, |
920d2a44 | 3963 | show_debug_file_directory, |
525226b5 | 3964 | &setlist, &showlist); |
770e7fc7 DE |
3965 | |
3966 | add_setshow_enum_cmd ("symbol-loading", no_class, | |
3967 | print_symbol_loading_enums, &print_symbol_loading, | |
3968 | _("\ | |
3969 | Set printing of symbol loading messages."), _("\ | |
3970 | Show printing of symbol loading messages."), _("\ | |
3971 | off == turn all messages off\n\ | |
3972 | brief == print messages for the executable,\n\ | |
3973 | and brief messages for shared libraries\n\ | |
3974 | full == print messages for the executable,\n\ | |
3975 | and messages for each shared library."), | |
3976 | NULL, | |
3977 | NULL, | |
3978 | &setprintlist, &showprintlist); | |
c4dcb155 SM |
3979 | |
3980 | add_setshow_boolean_cmd ("separate-debug-file", no_class, | |
3981 | &separate_debug_file_debug, _("\ | |
3982 | Set printing of separate debug info file search debug."), _("\ | |
3983 | Show printing of separate debug info file search debug."), _("\ | |
3984 | When on, GDB prints the searched locations while looking for separate debug \ | |
3985 | info files."), NULL, NULL, &setdebuglist, &showdebuglist); | |
32fa66eb SM |
3986 | |
3987 | #if GDB_SELF_TEST | |
3988 | selftests::register_test | |
3989 | ("filename_language", selftests::filename_language::test_filename_language); | |
3990 | selftests::register_test | |
3991 | ("set_ext_lang_command", | |
3992 | selftests::filename_language::test_set_ext_lang_command); | |
3993 | #endif | |
c906108c | 3994 | } |