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" |
c906108c | 59 | |
c906108c SS |
60 | #include <sys/types.h> |
61 | #include <fcntl.h> | |
53ce3c39 | 62 | #include <sys/stat.h> |
c906108c | 63 | #include <ctype.h> |
dcb07cfa | 64 | #include <chrono> |
c906108c | 65 | |
ccefe4c4 | 66 | #include "psymtab.h" |
c906108c | 67 | |
3e43a32a MS |
68 | int (*deprecated_ui_load_progress_hook) (const char *section, |
69 | unsigned long num); | |
9a4105ab | 70 | void (*deprecated_show_load_progress) (const char *section, |
5417f6dc RM |
71 | unsigned long section_sent, |
72 | unsigned long section_size, | |
73 | unsigned long total_sent, | |
c2d11a7d | 74 | unsigned long total_size); |
769d7dc4 AC |
75 | void (*deprecated_pre_add_symbol_hook) (const char *); |
76 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 77 | |
74b7792f AC |
78 | static void clear_symtab_users_cleanup (void *ignore); |
79 | ||
c378eb4e MS |
80 | /* Global variables owned by this file. */ |
81 | int readnow_symbol_files; /* Read full symbols immediately. */ | |
c906108c | 82 | |
c378eb4e | 83 | /* Functions this file defines. */ |
c906108c | 84 | |
a14ed312 | 85 | static void load_command (char *, int); |
c906108c | 86 | |
ecf45d2c | 87 | static void symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
b15cc25c | 88 | objfile_flags flags); |
d7db6da9 | 89 | |
a14ed312 | 90 | static void add_symbol_file_command (char *, int); |
c906108c | 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 overlay_auto_command (char *, int); |
c906108c | 97 | |
a14ed312 | 98 | static void overlay_manual_command (char *, int); |
c906108c | 99 | |
a14ed312 | 100 | static void overlay_off_command (char *, int); |
c906108c | 101 | |
a14ed312 | 102 | static void overlay_load_command (char *, int); |
c906108c | 103 | |
a14ed312 | 104 | static void overlay_command (char *, int); |
c906108c | 105 | |
a14ed312 | 106 | static void simple_free_overlay_table (void); |
c906108c | 107 | |
e17a4113 UW |
108 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
109 | enum bfd_endian); | |
c906108c | 110 | |
a14ed312 | 111 | static int simple_read_overlay_table (void); |
c906108c | 112 | |
a14ed312 | 113 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 114 | |
a14ed312 | 115 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 116 | |
31d99776 DJ |
117 | static void symfile_find_segment_sections (struct objfile *objfile); |
118 | ||
c906108c SS |
119 | /* List of all available sym_fns. On gdb startup, each object file reader |
120 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 121 | prepared to read. */ |
c906108c | 122 | |
c256e171 DE |
123 | typedef struct |
124 | { | |
125 | /* BFD flavour that we handle. */ | |
126 | enum bfd_flavour sym_flavour; | |
127 | ||
128 | /* The "vtable" of symbol functions. */ | |
129 | const struct sym_fns *sym_fns; | |
130 | } registered_sym_fns; | |
00b5771c | 131 | |
c256e171 DE |
132 | DEF_VEC_O (registered_sym_fns); |
133 | ||
134 | static VEC (registered_sym_fns) *symtab_fns = NULL; | |
c906108c | 135 | |
770e7fc7 DE |
136 | /* Values for "set print symbol-loading". */ |
137 | ||
138 | const char print_symbol_loading_off[] = "off"; | |
139 | const char print_symbol_loading_brief[] = "brief"; | |
140 | const char print_symbol_loading_full[] = "full"; | |
141 | static const char *print_symbol_loading_enums[] = | |
142 | { | |
143 | print_symbol_loading_off, | |
144 | print_symbol_loading_brief, | |
145 | print_symbol_loading_full, | |
146 | NULL | |
147 | }; | |
148 | static const char *print_symbol_loading = print_symbol_loading_full; | |
149 | ||
b7209cb4 FF |
150 | /* If non-zero, shared library symbols will be added automatically |
151 | when the inferior is created, new libraries are loaded, or when | |
152 | attaching to the inferior. This is almost always what users will | |
153 | want to have happen; but for very large programs, the startup time | |
154 | will be excessive, and so if this is a problem, the user can clear | |
155 | this flag and then add the shared library symbols as needed. Note | |
156 | that there is a potential for confusion, since if the shared | |
c906108c | 157 | library symbols are not loaded, commands like "info fun" will *not* |
0d14a781 | 158 | report all the functions that are actually present. */ |
c906108c SS |
159 | |
160 | int auto_solib_add = 1; | |
c906108c | 161 | \f |
c5aa993b | 162 | |
770e7fc7 DE |
163 | /* Return non-zero if symbol-loading messages should be printed. |
164 | FROM_TTY is the standard from_tty argument to gdb commands. | |
165 | If EXEC is non-zero the messages are for the executable. | |
166 | Otherwise, messages are for shared libraries. | |
167 | If FULL is non-zero then the caller is printing a detailed message. | |
168 | E.g., the message includes the shared library name. | |
169 | Otherwise, the caller is printing a brief "summary" message. */ | |
170 | ||
171 | int | |
172 | print_symbol_loading_p (int from_tty, int exec, int full) | |
173 | { | |
174 | if (!from_tty && !info_verbose) | |
175 | return 0; | |
176 | ||
177 | if (exec) | |
178 | { | |
179 | /* We don't check FULL for executables, there are few such | |
180 | messages, therefore brief == full. */ | |
181 | return print_symbol_loading != print_symbol_loading_off; | |
182 | } | |
183 | if (full) | |
184 | return print_symbol_loading == print_symbol_loading_full; | |
185 | return print_symbol_loading == print_symbol_loading_brief; | |
186 | } | |
187 | ||
0d14a781 | 188 | /* True if we are reading a symbol table. */ |
c906108c SS |
189 | |
190 | int currently_reading_symtab = 0; | |
191 | ||
ccefe4c4 TT |
192 | /* Increment currently_reading_symtab and return a cleanup that can be |
193 | used to decrement it. */ | |
3b7bacac | 194 | |
c83dd867 | 195 | scoped_restore_tmpl<int> |
ccefe4c4 | 196 | increment_reading_symtab (void) |
c906108c | 197 | { |
c83dd867 TT |
198 | gdb_assert (currently_reading_symtab >= 0); |
199 | return make_scoped_restore (¤tly_reading_symtab, | |
200 | currently_reading_symtab + 1); | |
c906108c SS |
201 | } |
202 | ||
5417f6dc RM |
203 | /* Remember the lowest-addressed loadable section we've seen. |
204 | This function is called via bfd_map_over_sections. | |
c906108c SS |
205 | |
206 | In case of equal vmas, the section with the largest size becomes the | |
207 | lowest-addressed loadable section. | |
208 | ||
209 | If the vmas and sizes are equal, the last section is considered the | |
210 | lowest-addressed loadable section. */ | |
211 | ||
212 | void | |
4efb68b1 | 213 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 214 | { |
c5aa993b | 215 | asection **lowest = (asection **) obj; |
c906108c | 216 | |
eb73e134 | 217 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
218 | return; |
219 | if (!*lowest) | |
220 | *lowest = sect; /* First loadable section */ | |
221 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
222 | *lowest = sect; /* A lower loadable section */ | |
223 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
224 | && (bfd_section_size (abfd, (*lowest)) | |
225 | <= bfd_section_size (abfd, sect))) | |
226 | *lowest = sect; | |
227 | } | |
228 | ||
d76488d8 TT |
229 | /* Create a new section_addr_info, with room for NUM_SECTIONS. The |
230 | new object's 'num_sections' field is set to 0; it must be updated | |
231 | by the caller. */ | |
a39a16c4 MM |
232 | |
233 | struct section_addr_info * | |
234 | alloc_section_addr_info (size_t num_sections) | |
235 | { | |
236 | struct section_addr_info *sap; | |
237 | size_t size; | |
238 | ||
239 | size = (sizeof (struct section_addr_info) | |
240 | + sizeof (struct other_sections) * (num_sections - 1)); | |
241 | sap = (struct section_addr_info *) xmalloc (size); | |
242 | memset (sap, 0, size); | |
a39a16c4 MM |
243 | |
244 | return sap; | |
245 | } | |
62557bbc KB |
246 | |
247 | /* Build (allocate and populate) a section_addr_info struct from | |
c378eb4e | 248 | an existing section table. */ |
62557bbc KB |
249 | |
250 | extern struct section_addr_info * | |
0542c86d PA |
251 | build_section_addr_info_from_section_table (const struct target_section *start, |
252 | const struct target_section *end) | |
62557bbc KB |
253 | { |
254 | struct section_addr_info *sap; | |
0542c86d | 255 | const struct target_section *stp; |
62557bbc KB |
256 | int oidx; |
257 | ||
a39a16c4 | 258 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
259 | |
260 | for (stp = start, oidx = 0; stp != end; stp++) | |
261 | { | |
2b2848e2 DE |
262 | struct bfd_section *asect = stp->the_bfd_section; |
263 | bfd *abfd = asect->owner; | |
264 | ||
265 | if (bfd_get_section_flags (abfd, asect) & (SEC_ALLOC | SEC_LOAD) | |
a39a16c4 | 266 | && oidx < end - start) |
62557bbc KB |
267 | { |
268 | sap->other[oidx].addr = stp->addr; | |
2b2848e2 DE |
269 | sap->other[oidx].name = xstrdup (bfd_section_name (abfd, asect)); |
270 | sap->other[oidx].sectindex = gdb_bfd_section_index (abfd, asect); | |
62557bbc KB |
271 | oidx++; |
272 | } | |
273 | } | |
274 | ||
d76488d8 TT |
275 | sap->num_sections = oidx; |
276 | ||
62557bbc KB |
277 | return sap; |
278 | } | |
279 | ||
82ccf5a5 | 280 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 281 | |
82ccf5a5 JK |
282 | static struct section_addr_info * |
283 | build_section_addr_info_from_bfd (bfd *abfd) | |
089b4803 TG |
284 | { |
285 | struct section_addr_info *sap; | |
286 | int i; | |
287 | struct bfd_section *sec; | |
288 | ||
82ccf5a5 JK |
289 | sap = alloc_section_addr_info (bfd_count_sections (abfd)); |
290 | for (i = 0, sec = abfd->sections; sec != NULL; sec = sec->next) | |
291 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) | |
012836ea | 292 | { |
82ccf5a5 JK |
293 | sap->other[i].addr = bfd_get_section_vma (abfd, sec); |
294 | sap->other[i].name = xstrdup (bfd_get_section_name (abfd, sec)); | |
65cf3563 | 295 | sap->other[i].sectindex = gdb_bfd_section_index (abfd, sec); |
012836ea JK |
296 | i++; |
297 | } | |
d76488d8 TT |
298 | |
299 | sap->num_sections = i; | |
300 | ||
089b4803 TG |
301 | return sap; |
302 | } | |
303 | ||
82ccf5a5 JK |
304 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
305 | ||
306 | struct section_addr_info * | |
307 | build_section_addr_info_from_objfile (const struct objfile *objfile) | |
308 | { | |
309 | struct section_addr_info *sap; | |
310 | int i; | |
311 | ||
312 | /* Before reread_symbols gets rewritten it is not safe to call: | |
313 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
314 | */ | |
315 | sap = build_section_addr_info_from_bfd (objfile->obfd); | |
d76488d8 | 316 | for (i = 0; i < sap->num_sections; i++) |
82ccf5a5 JK |
317 | { |
318 | int sectindex = sap->other[i].sectindex; | |
319 | ||
320 | sap->other[i].addr += objfile->section_offsets->offsets[sectindex]; | |
321 | } | |
322 | return sap; | |
323 | } | |
62557bbc | 324 | |
c378eb4e | 325 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ |
62557bbc KB |
326 | |
327 | extern void | |
328 | free_section_addr_info (struct section_addr_info *sap) | |
329 | { | |
330 | int idx; | |
331 | ||
a39a16c4 | 332 | for (idx = 0; idx < sap->num_sections; idx++) |
d76488d8 | 333 | xfree (sap->other[idx].name); |
b8c9b27d | 334 | xfree (sap); |
62557bbc KB |
335 | } |
336 | ||
e8289572 | 337 | /* Initialize OBJFILE's sect_index_* members. */ |
3b7bacac | 338 | |
e8289572 JB |
339 | static void |
340 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 341 | { |
e8289572 | 342 | asection *sect; |
c906108c | 343 | int i; |
5417f6dc | 344 | |
b8fbeb18 | 345 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 346 | if (sect) |
b8fbeb18 EZ |
347 | objfile->sect_index_text = sect->index; |
348 | ||
349 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 350 | if (sect) |
b8fbeb18 EZ |
351 | objfile->sect_index_data = sect->index; |
352 | ||
353 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 354 | if (sect) |
b8fbeb18 EZ |
355 | objfile->sect_index_bss = sect->index; |
356 | ||
357 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 358 | if (sect) |
b8fbeb18 EZ |
359 | objfile->sect_index_rodata = sect->index; |
360 | ||
bbcd32ad FF |
361 | /* This is where things get really weird... We MUST have valid |
362 | indices for the various sect_index_* members or gdb will abort. | |
363 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
364 | accomodate that. First, check for a file with the standard |
365 | one or two segments. */ | |
366 | ||
367 | symfile_find_segment_sections (objfile); | |
368 | ||
369 | /* Except when explicitly adding symbol files at some address, | |
370 | section_offsets contains nothing but zeros, so it doesn't matter | |
371 | which slot in section_offsets the individual sect_index_* members | |
372 | index into. So if they are all zero, it is safe to just point | |
373 | all the currently uninitialized indices to the first slot. But | |
374 | beware: if this is the main executable, it may be relocated | |
375 | later, e.g. by the remote qOffsets packet, and then this will | |
376 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
377 | |
378 | for (i = 0; i < objfile->num_sections; i++) | |
379 | { | |
380 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
381 | { | |
382 | break; | |
383 | } | |
384 | } | |
385 | if (i == objfile->num_sections) | |
386 | { | |
387 | if (objfile->sect_index_text == -1) | |
388 | objfile->sect_index_text = 0; | |
389 | if (objfile->sect_index_data == -1) | |
390 | objfile->sect_index_data = 0; | |
391 | if (objfile->sect_index_bss == -1) | |
392 | objfile->sect_index_bss = 0; | |
393 | if (objfile->sect_index_rodata == -1) | |
394 | objfile->sect_index_rodata = 0; | |
395 | } | |
b8fbeb18 | 396 | } |
c906108c | 397 | |
c1bd25fd DJ |
398 | /* The arguments to place_section. */ |
399 | ||
400 | struct place_section_arg | |
401 | { | |
402 | struct section_offsets *offsets; | |
403 | CORE_ADDR lowest; | |
404 | }; | |
405 | ||
406 | /* Find a unique offset to use for loadable section SECT if | |
407 | the user did not provide an offset. */ | |
408 | ||
2c0b251b | 409 | static void |
c1bd25fd DJ |
410 | place_section (bfd *abfd, asection *sect, void *obj) |
411 | { | |
19ba03f4 | 412 | struct place_section_arg *arg = (struct place_section_arg *) obj; |
c1bd25fd DJ |
413 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; |
414 | int done; | |
3bd72c6f | 415 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 416 | |
2711e456 DJ |
417 | /* We are only interested in allocated sections. */ |
418 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
419 | return; |
420 | ||
421 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 422 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
423 | return; |
424 | ||
425 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
426 | start_addr = (arg->lowest + align - 1) & -align; |
427 | ||
c1bd25fd DJ |
428 | do { |
429 | asection *cur_sec; | |
c1bd25fd | 430 | |
c1bd25fd DJ |
431 | done = 1; |
432 | ||
433 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
434 | { | |
435 | int indx = cur_sec->index; | |
c1bd25fd DJ |
436 | |
437 | /* We don't need to compare against ourself. */ | |
438 | if (cur_sec == sect) | |
439 | continue; | |
440 | ||
2711e456 DJ |
441 | /* We can only conflict with allocated sections. */ |
442 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
443 | continue; |
444 | ||
445 | /* If the section offset is 0, either the section has not been placed | |
446 | yet, or it was the lowest section placed (in which case LOWEST | |
447 | will be past its end). */ | |
448 | if (offsets[indx] == 0) | |
449 | continue; | |
450 | ||
451 | /* If this section would overlap us, then we must move up. */ | |
452 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
453 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
454 | { | |
455 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
456 | start_addr = (start_addr + align - 1) & -align; | |
457 | done = 0; | |
3bd72c6f | 458 | break; |
c1bd25fd DJ |
459 | } |
460 | ||
461 | /* Otherwise, we appear to be OK. So far. */ | |
462 | } | |
463 | } | |
464 | while (!done); | |
465 | ||
65cf3563 | 466 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
c1bd25fd | 467 | arg->lowest = start_addr + bfd_get_section_size (sect); |
c1bd25fd | 468 | } |
e8289572 | 469 | |
75242ef4 JK |
470 | /* Store struct section_addr_info as prepared (made relative and with SECTINDEX |
471 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS | |
472 | entries. */ | |
e8289572 JB |
473 | |
474 | void | |
75242ef4 JK |
475 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
476 | int num_sections, | |
3189cb12 | 477 | const struct section_addr_info *addrs) |
e8289572 JB |
478 | { |
479 | int i; | |
480 | ||
75242ef4 | 481 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 482 | |
c378eb4e | 483 | /* Now calculate offsets for section that were specified by the caller. */ |
d76488d8 | 484 | for (i = 0; i < addrs->num_sections; i++) |
e8289572 | 485 | { |
3189cb12 | 486 | const struct other_sections *osp; |
e8289572 | 487 | |
75242ef4 | 488 | osp = &addrs->other[i]; |
5488dafb | 489 | if (osp->sectindex == -1) |
e8289572 JB |
490 | continue; |
491 | ||
c378eb4e | 492 | /* Record all sections in offsets. */ |
e8289572 | 493 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 494 | the BFD index. */ |
75242ef4 JK |
495 | section_offsets->offsets[osp->sectindex] = osp->addr; |
496 | } | |
497 | } | |
498 | ||
1276c759 JK |
499 | /* Transform section name S for a name comparison. prelink can split section |
500 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
501 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
502 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
503 | (`.sbss') section has invalid (increased) virtual address. */ | |
504 | ||
505 | static const char * | |
506 | addr_section_name (const char *s) | |
507 | { | |
508 | if (strcmp (s, ".dynbss") == 0) | |
509 | return ".bss"; | |
510 | if (strcmp (s, ".sdynbss") == 0) | |
511 | return ".sbss"; | |
512 | ||
513 | return s; | |
514 | } | |
515 | ||
82ccf5a5 JK |
516 | /* qsort comparator for addrs_section_sort. Sort entries in ascending order by |
517 | their (name, sectindex) pair. sectindex makes the sort by name stable. */ | |
518 | ||
519 | static int | |
520 | addrs_section_compar (const void *ap, const void *bp) | |
521 | { | |
522 | const struct other_sections *a = *((struct other_sections **) ap); | |
523 | const struct other_sections *b = *((struct other_sections **) bp); | |
22e048c9 | 524 | int retval; |
82ccf5a5 | 525 | |
1276c759 | 526 | retval = strcmp (addr_section_name (a->name), addr_section_name (b->name)); |
82ccf5a5 JK |
527 | if (retval) |
528 | return retval; | |
529 | ||
5488dafb | 530 | return a->sectindex - b->sectindex; |
82ccf5a5 JK |
531 | } |
532 | ||
533 | /* Provide sorted array of pointers to sections of ADDRS. The array is | |
534 | terminated by NULL. Caller is responsible to call xfree for it. */ | |
535 | ||
536 | static struct other_sections ** | |
537 | addrs_section_sort (struct section_addr_info *addrs) | |
538 | { | |
539 | struct other_sections **array; | |
540 | int i; | |
541 | ||
542 | /* `+ 1' for the NULL terminator. */ | |
8d749320 | 543 | array = XNEWVEC (struct other_sections *, addrs->num_sections + 1); |
d76488d8 | 544 | for (i = 0; i < addrs->num_sections; i++) |
82ccf5a5 JK |
545 | array[i] = &addrs->other[i]; |
546 | array[i] = NULL; | |
547 | ||
548 | qsort (array, i, sizeof (*array), addrs_section_compar); | |
549 | ||
550 | return array; | |
551 | } | |
552 | ||
75242ef4 | 553 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
554 | also SECTINDEXes specific to ABFD there. This function can be used to |
555 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
556 | |
557 | void | |
558 | addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd) | |
559 | { | |
560 | asection *lower_sect; | |
75242ef4 JK |
561 | CORE_ADDR lower_offset; |
562 | int i; | |
82ccf5a5 JK |
563 | struct cleanup *my_cleanup; |
564 | struct section_addr_info *abfd_addrs; | |
565 | struct other_sections **addrs_sorted, **abfd_addrs_sorted; | |
566 | struct other_sections **addrs_to_abfd_addrs; | |
75242ef4 JK |
567 | |
568 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
569 | continguous sections. */ |
570 | lower_sect = NULL; | |
571 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
572 | if (lower_sect == NULL) |
573 | { | |
574 | warning (_("no loadable sections found in added symbol-file %s"), | |
575 | bfd_get_filename (abfd)); | |
576 | lower_offset = 0; | |
e8289572 | 577 | } |
75242ef4 JK |
578 | else |
579 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
580 | ||
82ccf5a5 JK |
581 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
582 | in ABFD. Section names are not unique - there can be multiple sections of | |
583 | the same name. Also the sections of the same name do not have to be | |
584 | adjacent to each other. Some sections may be present only in one of the | |
585 | files. Even sections present in both files do not have to be in the same | |
586 | order. | |
587 | ||
588 | Use stable sort by name for the sections in both files. Then linearly | |
589 | scan both lists matching as most of the entries as possible. */ | |
590 | ||
591 | addrs_sorted = addrs_section_sort (addrs); | |
592 | my_cleanup = make_cleanup (xfree, addrs_sorted); | |
593 | ||
594 | abfd_addrs = build_section_addr_info_from_bfd (abfd); | |
595 | make_cleanup_free_section_addr_info (abfd_addrs); | |
596 | abfd_addrs_sorted = addrs_section_sort (abfd_addrs); | |
597 | make_cleanup (xfree, abfd_addrs_sorted); | |
598 | ||
c378eb4e MS |
599 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
600 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 | 601 | |
8d749320 | 602 | addrs_to_abfd_addrs = XCNEWVEC (struct other_sections *, addrs->num_sections); |
82ccf5a5 JK |
603 | make_cleanup (xfree, addrs_to_abfd_addrs); |
604 | ||
605 | while (*addrs_sorted) | |
606 | { | |
1276c759 | 607 | const char *sect_name = addr_section_name ((*addrs_sorted)->name); |
82ccf5a5 JK |
608 | |
609 | while (*abfd_addrs_sorted | |
1276c759 JK |
610 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
611 | sect_name) < 0) | |
82ccf5a5 JK |
612 | abfd_addrs_sorted++; |
613 | ||
614 | if (*abfd_addrs_sorted | |
1276c759 JK |
615 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
616 | sect_name) == 0) | |
82ccf5a5 JK |
617 | { |
618 | int index_in_addrs; | |
619 | ||
620 | /* Make the found item directly addressable from ADDRS. */ | |
621 | index_in_addrs = *addrs_sorted - addrs->other; | |
622 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); | |
623 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_addrs_sorted; | |
624 | ||
625 | /* Never use the same ABFD entry twice. */ | |
626 | abfd_addrs_sorted++; | |
627 | } | |
628 | ||
629 | addrs_sorted++; | |
630 | } | |
631 | ||
75242ef4 JK |
632 | /* Calculate offsets for the loadable sections. |
633 | FIXME! Sections must be in order of increasing loadable section | |
634 | so that contiguous sections can use the lower-offset!!! | |
635 | ||
636 | Adjust offsets if the segments are not contiguous. | |
637 | If the section is contiguous, its offset should be set to | |
638 | the offset of the highest loadable section lower than it | |
639 | (the loadable section directly below it in memory). | |
640 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
641 | ||
d76488d8 | 642 | for (i = 0; i < addrs->num_sections; i++) |
75242ef4 | 643 | { |
82ccf5a5 | 644 | struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
645 | |
646 | if (sect) | |
75242ef4 | 647 | { |
c378eb4e | 648 | /* This is the index used by BFD. */ |
82ccf5a5 | 649 | addrs->other[i].sectindex = sect->sectindex; |
672d9c23 JK |
650 | |
651 | if (addrs->other[i].addr != 0) | |
75242ef4 | 652 | { |
82ccf5a5 | 653 | addrs->other[i].addr -= sect->addr; |
75242ef4 | 654 | lower_offset = addrs->other[i].addr; |
75242ef4 JK |
655 | } |
656 | else | |
672d9c23 | 657 | addrs->other[i].addr = lower_offset; |
75242ef4 JK |
658 | } |
659 | else | |
672d9c23 | 660 | { |
1276c759 JK |
661 | /* addr_section_name transformation is not used for SECT_NAME. */ |
662 | const char *sect_name = addrs->other[i].name; | |
663 | ||
b0fcb67f JK |
664 | /* This section does not exist in ABFD, which is normally |
665 | unexpected and we want to issue a warning. | |
666 | ||
4d9743af JK |
667 | However, the ELF prelinker does create a few sections which are |
668 | marked in the main executable as loadable (they are loaded in | |
669 | memory from the DYNAMIC segment) and yet are not present in | |
670 | separate debug info files. This is fine, and should not cause | |
671 | a warning. Shared libraries contain just the section | |
672 | ".gnu.liblist" but it is not marked as loadable there. There is | |
673 | no other way to identify them than by their name as the sections | |
1276c759 JK |
674 | created by prelink have no special flags. |
675 | ||
676 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f JK |
677 | |
678 | if (!(strcmp (sect_name, ".gnu.liblist") == 0 | |
4d9743af | 679 | || strcmp (sect_name, ".gnu.conflict") == 0 |
1276c759 JK |
680 | || (strcmp (sect_name, ".bss") == 0 |
681 | && i > 0 | |
682 | && strcmp (addrs->other[i - 1].name, ".dynbss") == 0 | |
683 | && addrs_to_abfd_addrs[i - 1] != NULL) | |
684 | || (strcmp (sect_name, ".sbss") == 0 | |
685 | && i > 0 | |
686 | && strcmp (addrs->other[i - 1].name, ".sdynbss") == 0 | |
687 | && addrs_to_abfd_addrs[i - 1] != NULL))) | |
b0fcb67f JK |
688 | warning (_("section %s not found in %s"), sect_name, |
689 | bfd_get_filename (abfd)); | |
690 | ||
672d9c23 | 691 | addrs->other[i].addr = 0; |
5488dafb | 692 | addrs->other[i].sectindex = -1; |
672d9c23 | 693 | } |
75242ef4 | 694 | } |
82ccf5a5 JK |
695 | |
696 | do_cleanups (my_cleanup); | |
75242ef4 JK |
697 | } |
698 | ||
699 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
700 | of how to represent it for fast symbol reading. This is the default | |
701 | version of the sym_fns.sym_offsets function for symbol readers that | |
702 | don't need to do anything special. It allocates a section_offsets table | |
703 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
704 | ||
705 | void | |
706 | default_symfile_offsets (struct objfile *objfile, | |
3189cb12 | 707 | const struct section_addr_info *addrs) |
75242ef4 | 708 | { |
d445b2f6 | 709 | objfile->num_sections = gdb_bfd_count_sections (objfile->obfd); |
75242ef4 JK |
710 | objfile->section_offsets = (struct section_offsets *) |
711 | obstack_alloc (&objfile->objfile_obstack, | |
712 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
713 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
714 | objfile->num_sections, addrs); | |
e8289572 | 715 | |
c1bd25fd DJ |
716 | /* For relocatable files, all loadable sections will start at zero. |
717 | The zero is meaningless, so try to pick arbitrary addresses such | |
718 | that no loadable sections overlap. This algorithm is quadratic, | |
719 | but the number of sections in a single object file is generally | |
720 | small. */ | |
721 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
722 | { | |
723 | struct place_section_arg arg; | |
2711e456 DJ |
724 | bfd *abfd = objfile->obfd; |
725 | asection *cur_sec; | |
2711e456 DJ |
726 | |
727 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
728 | /* We do not expect this to happen; just skip this step if the | |
729 | relocatable file has a section with an assigned VMA. */ | |
730 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
731 | break; | |
732 | ||
733 | if (cur_sec == NULL) | |
734 | { | |
735 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
736 | ||
737 | /* Pick non-overlapping offsets for sections the user did not | |
738 | place explicitly. */ | |
739 | arg.offsets = objfile->section_offsets; | |
740 | arg.lowest = 0; | |
741 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
742 | ||
743 | /* Correctly filling in the section offsets is not quite | |
744 | enough. Relocatable files have two properties that | |
745 | (most) shared objects do not: | |
746 | ||
747 | - Their debug information will contain relocations. Some | |
748 | shared libraries do also, but many do not, so this can not | |
749 | be assumed. | |
750 | ||
751 | - If there are multiple code sections they will be loaded | |
752 | at different relative addresses in memory than they are | |
753 | in the objfile, since all sections in the file will start | |
754 | at address zero. | |
755 | ||
756 | Because GDB has very limited ability to map from an | |
757 | address in debug info to the correct code section, | |
758 | it relies on adding SECT_OFF_TEXT to things which might be | |
759 | code. If we clear all the section offsets, and set the | |
760 | section VMAs instead, then symfile_relocate_debug_section | |
761 | will return meaningful debug information pointing at the | |
762 | correct sections. | |
763 | ||
764 | GDB has too many different data structures for section | |
765 | addresses - a bfd, objfile, and so_list all have section | |
766 | tables, as does exec_ops. Some of these could probably | |
767 | be eliminated. */ | |
768 | ||
769 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
770 | cur_sec = cur_sec->next) | |
771 | { | |
772 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
773 | continue; | |
774 | ||
775 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
776 | exec_set_section_address (bfd_get_filename (abfd), |
777 | cur_sec->index, | |
30510692 | 778 | offsets[cur_sec->index]); |
2711e456 DJ |
779 | offsets[cur_sec->index] = 0; |
780 | } | |
781 | } | |
c1bd25fd DJ |
782 | } |
783 | ||
e8289572 | 784 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 785 | .rodata sections. */ |
e8289572 JB |
786 | init_objfile_sect_indices (objfile); |
787 | } | |
788 | ||
31d99776 DJ |
789 | /* Divide the file into segments, which are individual relocatable units. |
790 | This is the default version of the sym_fns.sym_segments function for | |
791 | symbol readers that do not have an explicit representation of segments. | |
792 | It assumes that object files do not have segments, and fully linked | |
793 | files have a single segment. */ | |
794 | ||
795 | struct symfile_segment_data * | |
796 | default_symfile_segments (bfd *abfd) | |
797 | { | |
798 | int num_sections, i; | |
799 | asection *sect; | |
800 | struct symfile_segment_data *data; | |
801 | CORE_ADDR low, high; | |
802 | ||
803 | /* Relocatable files contain enough information to position each | |
804 | loadable section independently; they should not be relocated | |
805 | in segments. */ | |
806 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
807 | return NULL; | |
808 | ||
809 | /* Make sure there is at least one loadable section in the file. */ | |
810 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
811 | { | |
812 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
813 | continue; | |
814 | ||
815 | break; | |
816 | } | |
817 | if (sect == NULL) | |
818 | return NULL; | |
819 | ||
820 | low = bfd_get_section_vma (abfd, sect); | |
821 | high = low + bfd_get_section_size (sect); | |
822 | ||
41bf6aca | 823 | data = XCNEW (struct symfile_segment_data); |
31d99776 | 824 | data->num_segments = 1; |
fc270c35 TT |
825 | data->segment_bases = XCNEW (CORE_ADDR); |
826 | data->segment_sizes = XCNEW (CORE_ADDR); | |
31d99776 DJ |
827 | |
828 | num_sections = bfd_count_sections (abfd); | |
fc270c35 | 829 | data->segment_info = XCNEWVEC (int, num_sections); |
31d99776 DJ |
830 | |
831 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
832 | { | |
833 | CORE_ADDR vma; | |
834 | ||
835 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
836 | continue; | |
837 | ||
838 | vma = bfd_get_section_vma (abfd, sect); | |
839 | if (vma < low) | |
840 | low = vma; | |
841 | if (vma + bfd_get_section_size (sect) > high) | |
842 | high = vma + bfd_get_section_size (sect); | |
843 | ||
844 | data->segment_info[i] = 1; | |
845 | } | |
846 | ||
847 | data->segment_bases[0] = low; | |
848 | data->segment_sizes[0] = high - low; | |
849 | ||
850 | return data; | |
851 | } | |
852 | ||
608e2dbb TT |
853 | /* This is a convenience function to call sym_read for OBJFILE and |
854 | possibly force the partial symbols to be read. */ | |
855 | ||
856 | static void | |
b15cc25c | 857 | read_symbols (struct objfile *objfile, symfile_add_flags add_flags) |
608e2dbb TT |
858 | { |
859 | (*objfile->sf->sym_read) (objfile, add_flags); | |
23732b1e | 860 | objfile->per_bfd->minsyms_read = true; |
8a92335b JK |
861 | |
862 | /* find_separate_debug_file_in_section should be called only if there is | |
863 | single binary with no existing separate debug info file. */ | |
864 | if (!objfile_has_partial_symbols (objfile) | |
865 | && objfile->separate_debug_objfile == NULL | |
866 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb | 867 | { |
192b62ce | 868 | gdb_bfd_ref_ptr abfd (find_separate_debug_file_in_section (objfile)); |
608e2dbb TT |
869 | |
870 | if (abfd != NULL) | |
24ba069a JK |
871 | { |
872 | /* find_separate_debug_file_in_section uses the same filename for the | |
873 | virtual section-as-bfd like the bfd filename containing the | |
874 | section. Therefore use also non-canonical name form for the same | |
875 | file containing the section. */ | |
192b62ce TT |
876 | symbol_file_add_separate (abfd.get (), objfile->original_name, |
877 | add_flags, objfile); | |
24ba069a | 878 | } |
608e2dbb TT |
879 | } |
880 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
881 | require_partial_symbols (objfile, 0); | |
882 | } | |
883 | ||
3d6e24f0 JB |
884 | /* Initialize entry point information for this objfile. */ |
885 | ||
886 | static void | |
887 | init_entry_point_info (struct objfile *objfile) | |
888 | { | |
6ef55de7 TT |
889 | struct entry_info *ei = &objfile->per_bfd->ei; |
890 | ||
891 | if (ei->initialized) | |
892 | return; | |
893 | ei->initialized = 1; | |
894 | ||
3d6e24f0 JB |
895 | /* Save startup file's range of PC addresses to help blockframe.c |
896 | decide where the bottom of the stack is. */ | |
897 | ||
898 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
899 | { | |
900 | /* Executable file -- record its entry point so we'll recognize | |
901 | the startup file because it contains the entry point. */ | |
6ef55de7 TT |
902 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
903 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
904 | } |
905 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
906 | && bfd_get_start_address (objfile->obfd) != 0) | |
907 | { | |
908 | /* Some shared libraries may have entry points set and be | |
909 | runnable. There's no clear way to indicate this, so just check | |
910 | for values other than zero. */ | |
6ef55de7 TT |
911 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
912 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
913 | } |
914 | else | |
915 | { | |
916 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
6ef55de7 | 917 | ei->entry_point_p = 0; |
3d6e24f0 JB |
918 | } |
919 | ||
6ef55de7 | 920 | if (ei->entry_point_p) |
3d6e24f0 | 921 | { |
53eddfa6 | 922 | struct obj_section *osect; |
6ef55de7 | 923 | CORE_ADDR entry_point = ei->entry_point; |
53eddfa6 | 924 | int found; |
3d6e24f0 JB |
925 | |
926 | /* Make certain that the address points at real code, and not a | |
927 | function descriptor. */ | |
928 | entry_point | |
df6d5441 | 929 | = gdbarch_convert_from_func_ptr_addr (get_objfile_arch (objfile), |
3d6e24f0 JB |
930 | entry_point, |
931 | ¤t_target); | |
932 | ||
933 | /* Remove any ISA markers, so that this matches entries in the | |
934 | symbol table. */ | |
6ef55de7 | 935 | ei->entry_point |
df6d5441 | 936 | = gdbarch_addr_bits_remove (get_objfile_arch (objfile), entry_point); |
53eddfa6 TT |
937 | |
938 | found = 0; | |
939 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
940 | { | |
941 | struct bfd_section *sect = osect->the_bfd_section; | |
942 | ||
943 | if (entry_point >= bfd_get_section_vma (objfile->obfd, sect) | |
944 | && entry_point < (bfd_get_section_vma (objfile->obfd, sect) | |
945 | + bfd_get_section_size (sect))) | |
946 | { | |
6ef55de7 | 947 | ei->the_bfd_section_index |
53eddfa6 TT |
948 | = gdb_bfd_section_index (objfile->obfd, sect); |
949 | found = 1; | |
950 | break; | |
951 | } | |
952 | } | |
953 | ||
954 | if (!found) | |
6ef55de7 | 955 | ei->the_bfd_section_index = SECT_OFF_TEXT (objfile); |
3d6e24f0 JB |
956 | } |
957 | } | |
958 | ||
c906108c SS |
959 | /* Process a symbol file, as either the main file or as a dynamically |
960 | loaded file. | |
961 | ||
36e4d068 JB |
962 | This function does not set the OBJFILE's entry-point info. |
963 | ||
96baa820 JM |
964 | OBJFILE is where the symbols are to be read from. |
965 | ||
7e8580c1 JB |
966 | ADDRS is the list of section load addresses. If the user has given |
967 | an 'add-symbol-file' command, then this is the list of offsets and | |
968 | addresses he or she provided as arguments to the command; or, if | |
969 | we're handling a shared library, these are the actual addresses the | |
970 | sections are loaded at, according to the inferior's dynamic linker | |
971 | (as gleaned by GDB's shared library code). We convert each address | |
972 | into an offset from the section VMA's as it appears in the object | |
973 | file, and then call the file's sym_offsets function to convert this | |
974 | into a format-specific offset table --- a `struct section_offsets'. | |
96baa820 | 975 | |
7eedccfa PP |
976 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
977 | an extra symbol file such as dynamically loaded code, and wether | |
978 | breakpoint reset should be deferred. */ | |
c906108c | 979 | |
36e4d068 JB |
980 | static void |
981 | syms_from_objfile_1 (struct objfile *objfile, | |
982 | struct section_addr_info *addrs, | |
b15cc25c | 983 | symfile_add_flags add_flags) |
c906108c | 984 | { |
a39a16c4 | 985 | struct section_addr_info *local_addr = NULL; |
c906108c | 986 | struct cleanup *old_chain; |
7eedccfa | 987 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 988 | |
8fb8eb5c | 989 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
c906108c | 990 | |
75245b24 | 991 | if (objfile->sf == NULL) |
36e4d068 JB |
992 | { |
993 | /* No symbols to load, but we still need to make sure | |
994 | that the section_offsets table is allocated. */ | |
d445b2f6 | 995 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
a7bfba49 | 996 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_sections); |
36e4d068 JB |
997 | |
998 | objfile->num_sections = num_sections; | |
999 | objfile->section_offsets | |
224c3ddb SM |
1000 | = (struct section_offsets *) obstack_alloc (&objfile->objfile_obstack, |
1001 | size); | |
36e4d068 JB |
1002 | memset (objfile->section_offsets, 0, size); |
1003 | return; | |
1004 | } | |
75245b24 | 1005 | |
c906108c SS |
1006 | /* Make sure that partially constructed symbol tables will be cleaned up |
1007 | if an error occurs during symbol reading. */ | |
74b7792f | 1008 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 1009 | |
6bf667bb DE |
1010 | /* If ADDRS is NULL, put together a dummy address list. |
1011 | We now establish the convention that an addr of zero means | |
c378eb4e | 1012 | no load address was specified. */ |
6bf667bb | 1013 | if (! addrs) |
a39a16c4 | 1014 | { |
d445b2f6 | 1015 | local_addr = alloc_section_addr_info (1); |
a39a16c4 MM |
1016 | make_cleanup (xfree, local_addr); |
1017 | addrs = local_addr; | |
1018 | } | |
1019 | ||
c5aa993b | 1020 | if (mainline) |
c906108c SS |
1021 | { |
1022 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 1023 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 1024 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
1025 | |
1026 | /* Since no error yet, throw away the old symbol table. */ | |
1027 | ||
1028 | if (symfile_objfile != NULL) | |
1029 | { | |
1030 | free_objfile (symfile_objfile); | |
adb7f338 | 1031 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
1032 | } |
1033 | ||
1034 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
1035 | If the user wants to get rid of them, they should do "symbol-file" |
1036 | without arguments first. Not sure this is the best behavior | |
1037 | (PR 2207). */ | |
c906108c | 1038 | |
c5aa993b | 1039 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
1040 | } |
1041 | ||
1042 | /* Convert addr into an offset rather than an absolute address. | |
1043 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 1044 | and assume that <addr> is where that got loaded. |
c906108c | 1045 | |
53a5351d JM |
1046 | We no longer warn if the lowest section is not a text segment (as |
1047 | happens for the PA64 port. */ | |
6bf667bb | 1048 | if (addrs->num_sections > 0) |
75242ef4 | 1049 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
1050 | |
1051 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
1052 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 1053 | initial symbol reading for this file. */ |
c906108c | 1054 | |
c5aa993b | 1055 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 1056 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 1057 | |
6bf667bb | 1058 | (*objfile->sf->sym_offsets) (objfile, addrs); |
c906108c | 1059 | |
608e2dbb | 1060 | read_symbols (objfile, add_flags); |
b11896a5 | 1061 | |
c906108c SS |
1062 | /* Discard cleanups as symbol reading was successful. */ |
1063 | ||
1064 | discard_cleanups (old_chain); | |
f7545552 | 1065 | xfree (local_addr); |
c906108c SS |
1066 | } |
1067 | ||
36e4d068 JB |
1068 | /* Same as syms_from_objfile_1, but also initializes the objfile |
1069 | entry-point info. */ | |
1070 | ||
6bf667bb | 1071 | static void |
36e4d068 JB |
1072 | syms_from_objfile (struct objfile *objfile, |
1073 | struct section_addr_info *addrs, | |
b15cc25c | 1074 | symfile_add_flags add_flags) |
36e4d068 | 1075 | { |
6bf667bb | 1076 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
1077 | init_entry_point_info (objfile); |
1078 | } | |
1079 | ||
c906108c SS |
1080 | /* Perform required actions after either reading in the initial |
1081 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1082 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1083 | |
e7d52ed3 | 1084 | static void |
b15cc25c | 1085 | finish_new_objfile (struct objfile *objfile, symfile_add_flags add_flags) |
c906108c | 1086 | { |
c906108c | 1087 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1088 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1089 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1090 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1091 | { |
1092 | /* OK, make it the "real" symbol file. */ | |
1093 | symfile_objfile = objfile; | |
1094 | ||
c1e56572 | 1095 | clear_symtab_users (add_flags); |
c906108c | 1096 | } |
7eedccfa | 1097 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1098 | { |
69de3c6a | 1099 | breakpoint_re_set (); |
c906108c SS |
1100 | } |
1101 | ||
1102 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 1103 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
1104 | } |
1105 | ||
1106 | /* Process a symbol file, as either the main file or as a dynamically | |
1107 | loaded file. | |
1108 | ||
5417f6dc | 1109 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1110 | A new reference is acquired by this function. |
7904e09f | 1111 | |
24ba069a JK |
1112 | For NAME description see allocate_objfile's definition. |
1113 | ||
7eedccfa PP |
1114 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1115 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f | 1116 | |
6bf667bb | 1117 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1118 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1119 | |
63524580 JK |
1120 | PARENT is the original objfile if ABFD is a separate debug info file. |
1121 | Otherwise PARENT is NULL. | |
1122 | ||
c906108c | 1123 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1124 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1125 | |
7904e09f | 1126 | static struct objfile * |
b15cc25c PA |
1127 | symbol_file_add_with_addrs (bfd *abfd, const char *name, |
1128 | symfile_add_flags add_flags, | |
6bf667bb | 1129 | struct section_addr_info *addrs, |
b15cc25c | 1130 | objfile_flags flags, struct objfile *parent) |
c906108c SS |
1131 | { |
1132 | struct objfile *objfile; | |
7eedccfa | 1133 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1134 | const int mainline = add_flags & SYMFILE_MAINLINE; |
770e7fc7 | 1135 | const int should_print = (print_symbol_loading_p (from_tty, mainline, 1) |
b11896a5 TT |
1136 | && (readnow_symbol_files |
1137 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1138 | |
9291a0cd | 1139 | if (readnow_symbol_files) |
b11896a5 TT |
1140 | { |
1141 | flags |= OBJF_READNOW; | |
1142 | add_flags &= ~SYMFILE_NO_READ; | |
1143 | } | |
9291a0cd | 1144 | |
5417f6dc RM |
1145 | /* Give user a chance to burp if we'd be |
1146 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1147 | |
1148 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1149 | && mainline |
c906108c | 1150 | && from_tty |
9e2f0ad4 | 1151 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1152 | error (_("Not confirmed.")); |
c906108c | 1153 | |
b15cc25c PA |
1154 | if (mainline) |
1155 | flags |= OBJF_MAINLINE; | |
1156 | objfile = allocate_objfile (abfd, name, flags); | |
c906108c | 1157 | |
63524580 JK |
1158 | if (parent) |
1159 | add_separate_debug_objfile (objfile, parent); | |
1160 | ||
78a4a9b9 AC |
1161 | /* We either created a new mapped symbol table, mapped an existing |
1162 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1163 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1164 | if (should_print) |
c906108c | 1165 | { |
769d7dc4 AC |
1166 | if (deprecated_pre_add_symbol_hook) |
1167 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1168 | else |
c906108c | 1169 | { |
55333a84 DE |
1170 | printf_unfiltered (_("Reading symbols from %s..."), name); |
1171 | wrap_here (""); | |
1172 | gdb_flush (gdb_stdout); | |
c906108c | 1173 | } |
c906108c | 1174 | } |
6bf667bb | 1175 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1176 | |
1177 | /* We now have at least a partial symbol table. Check to see if the | |
1178 | user requested that all symbols be read on initial access via either | |
1179 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1180 | all partial symbol tables for this objfile if so. */ |
c906108c | 1181 | |
9291a0cd | 1182 | if ((flags & OBJF_READNOW)) |
c906108c | 1183 | { |
b11896a5 | 1184 | if (should_print) |
c906108c | 1185 | { |
a3f17187 | 1186 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1187 | wrap_here (""); |
1188 | gdb_flush (gdb_stdout); | |
1189 | } | |
1190 | ||
ccefe4c4 TT |
1191 | if (objfile->sf) |
1192 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1193 | } |
1194 | ||
b11896a5 | 1195 | if (should_print && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1196 | { |
1197 | wrap_here (""); | |
55333a84 | 1198 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1199 | wrap_here (""); |
1200 | } | |
1201 | ||
b11896a5 | 1202 | if (should_print) |
c906108c | 1203 | { |
769d7dc4 AC |
1204 | if (deprecated_post_add_symbol_hook) |
1205 | deprecated_post_add_symbol_hook (); | |
c906108c | 1206 | else |
55333a84 | 1207 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1208 | } |
1209 | ||
481d0f41 JB |
1210 | /* We print some messages regardless of whether 'from_tty || |
1211 | info_verbose' is true, so make sure they go out at the right | |
1212 | time. */ | |
1213 | gdb_flush (gdb_stdout); | |
1214 | ||
109f874e | 1215 | if (objfile->sf == NULL) |
8caee43b PP |
1216 | { |
1217 | observer_notify_new_objfile (objfile); | |
c378eb4e | 1218 | return objfile; /* No symbols. */ |
8caee43b | 1219 | } |
109f874e | 1220 | |
e7d52ed3 | 1221 | finish_new_objfile (objfile, add_flags); |
c906108c | 1222 | |
06d3b283 | 1223 | observer_notify_new_objfile (objfile); |
c906108c | 1224 | |
ce7d4522 | 1225 | bfd_cache_close_all (); |
c906108c SS |
1226 | return (objfile); |
1227 | } | |
1228 | ||
24ba069a JK |
1229 | /* Add BFD as a separate debug file for OBJFILE. For NAME description |
1230 | see allocate_objfile's definition. */ | |
9cce227f TG |
1231 | |
1232 | void | |
b15cc25c PA |
1233 | symbol_file_add_separate (bfd *bfd, const char *name, |
1234 | symfile_add_flags symfile_flags, | |
24ba069a | 1235 | struct objfile *objfile) |
9cce227f | 1236 | { |
089b4803 TG |
1237 | struct section_addr_info *sap; |
1238 | struct cleanup *my_cleanup; | |
1239 | ||
1240 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1241 | because sections of BFD may not match sections of OBJFILE and because | |
1242 | vma may have been modified by tools such as prelink. */ | |
1243 | sap = build_section_addr_info_from_objfile (objfile); | |
1244 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1245 | |
870f88f7 | 1246 | symbol_file_add_with_addrs |
24ba069a | 1247 | (bfd, name, symfile_flags, sap, |
9cce227f | 1248 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1249 | | OBJF_USERLOADED), |
1250 | objfile); | |
089b4803 TG |
1251 | |
1252 | do_cleanups (my_cleanup); | |
9cce227f | 1253 | } |
7904e09f | 1254 | |
eb4556d7 JB |
1255 | /* Process the symbol file ABFD, as either the main file or as a |
1256 | dynamically loaded file. | |
6bf667bb | 1257 | See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1258 | |
eb4556d7 | 1259 | struct objfile * |
b15cc25c PA |
1260 | symbol_file_add_from_bfd (bfd *abfd, const char *name, |
1261 | symfile_add_flags add_flags, | |
eb4556d7 | 1262 | struct section_addr_info *addrs, |
b15cc25c | 1263 | objfile_flags flags, struct objfile *parent) |
eb4556d7 | 1264 | { |
24ba069a JK |
1265 | return symbol_file_add_with_addrs (abfd, name, add_flags, addrs, flags, |
1266 | parent); | |
eb4556d7 JB |
1267 | } |
1268 | ||
7904e09f | 1269 | /* Process a symbol file, as either the main file or as a dynamically |
6bf667bb | 1270 | loaded file. See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1271 | |
7904e09f | 1272 | struct objfile * |
b15cc25c PA |
1273 | symbol_file_add (const char *name, symfile_add_flags add_flags, |
1274 | struct section_addr_info *addrs, objfile_flags flags) | |
7904e09f | 1275 | { |
192b62ce | 1276 | gdb_bfd_ref_ptr bfd (symfile_bfd_open (name)); |
8ac244b4 | 1277 | |
192b62ce TT |
1278 | return symbol_file_add_from_bfd (bfd.get (), name, add_flags, addrs, |
1279 | flags, NULL); | |
7904e09f JB |
1280 | } |
1281 | ||
d7db6da9 FN |
1282 | /* Call symbol_file_add() with default values and update whatever is |
1283 | affected by the loading of a new main(). | |
1284 | Used when the file is supplied in the gdb command line | |
1285 | and by some targets with special loading requirements. | |
1286 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1287 | argument for the switches that can only be specified in the symbol_file | |
1288 | command itself. */ | |
5417f6dc | 1289 | |
1adeb98a | 1290 | void |
ecf45d2c | 1291 | symbol_file_add_main (const char *args, symfile_add_flags add_flags) |
1adeb98a | 1292 | { |
ecf45d2c | 1293 | symbol_file_add_main_1 (args, add_flags, 0); |
d7db6da9 FN |
1294 | } |
1295 | ||
1296 | static void | |
ecf45d2c SL |
1297 | symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
1298 | objfile_flags flags) | |
d7db6da9 | 1299 | { |
ecf45d2c | 1300 | add_flags |= current_inferior ()->symfile_flags | SYMFILE_MAINLINE; |
7dcd53a0 | 1301 | |
7eedccfa | 1302 | symbol_file_add (args, add_flags, NULL, flags); |
d7db6da9 | 1303 | |
d7db6da9 FN |
1304 | /* Getting new symbols may change our opinion about |
1305 | what is frameless. */ | |
1306 | reinit_frame_cache (); | |
1307 | ||
b15cc25c | 1308 | if ((add_flags & SYMFILE_NO_READ) == 0) |
7dcd53a0 | 1309 | set_initial_language (); |
1adeb98a FN |
1310 | } |
1311 | ||
1312 | void | |
1313 | symbol_file_clear (int from_tty) | |
1314 | { | |
1315 | if ((have_full_symbols () || have_partial_symbols ()) | |
1316 | && from_tty | |
0430b0d6 AS |
1317 | && (symfile_objfile |
1318 | ? !query (_("Discard symbol table from `%s'? "), | |
4262abfb | 1319 | objfile_name (symfile_objfile)) |
0430b0d6 | 1320 | : !query (_("Discard symbol table? ")))) |
8a3fe4f8 | 1321 | error (_("Not confirmed.")); |
1adeb98a | 1322 | |
0133421a JK |
1323 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1324 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1325 | no_shared_libraries (NULL, from_tty); |
1326 | ||
0133421a JK |
1327 | free_all_objfiles (); |
1328 | ||
adb7f338 | 1329 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1330 | if (from_tty) |
1331 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1332 | } |
1333 | ||
c4dcb155 SM |
1334 | /* See symfile.h. */ |
1335 | ||
1336 | int separate_debug_file_debug = 0; | |
1337 | ||
5b5d99cf | 1338 | static int |
287ccc17 | 1339 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1340 | struct objfile *parent_objfile) |
5b5d99cf | 1341 | { |
904578ed JK |
1342 | unsigned long file_crc; |
1343 | int file_crc_p; | |
32a0e547 | 1344 | struct stat parent_stat, abfd_stat; |
904578ed | 1345 | int verified_as_different; |
32a0e547 JK |
1346 | |
1347 | /* Find a separate debug info file as if symbols would be present in | |
1348 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1349 | section can contain just the basename of PARENT_OBJFILE without any | |
1350 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1351 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1352 | |
4262abfb | 1353 | if (filename_cmp (name, objfile_name (parent_objfile)) == 0) |
32a0e547 | 1354 | return 0; |
5b5d99cf | 1355 | |
c4dcb155 SM |
1356 | if (separate_debug_file_debug) |
1357 | printf_unfiltered (_(" Trying %s\n"), name); | |
1358 | ||
192b62ce | 1359 | gdb_bfd_ref_ptr abfd (gdb_bfd_open (name, gnutarget, -1)); |
f1838a98 | 1360 | |
192b62ce | 1361 | if (abfd == NULL) |
5b5d99cf JB |
1362 | return 0; |
1363 | ||
0ba1096a | 1364 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1365 | |
1366 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1367 | st_ino; they always set it to zero. (Windows does provide a | |
0a93529c GB |
1368 | meaningful st_dev.) Files accessed from gdbservers that do not |
1369 | support the vFile:fstat packet will also have st_ino set to zero. | |
1370 | Do not indicate a duplicate library in either case. While there | |
1371 | is no guarantee that a system that provides meaningful inode | |
1372 | numbers will never set st_ino to zero, this is merely an | |
1373 | optimization, so we do not need to worry about false negatives. */ | |
32a0e547 | 1374 | |
192b62ce | 1375 | if (bfd_stat (abfd.get (), &abfd_stat) == 0 |
904578ed JK |
1376 | && abfd_stat.st_ino != 0 |
1377 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1378 | { |
904578ed JK |
1379 | if (abfd_stat.st_dev == parent_stat.st_dev |
1380 | && abfd_stat.st_ino == parent_stat.st_ino) | |
192b62ce | 1381 | return 0; |
904578ed | 1382 | verified_as_different = 1; |
32a0e547 | 1383 | } |
904578ed JK |
1384 | else |
1385 | verified_as_different = 0; | |
32a0e547 | 1386 | |
192b62ce | 1387 | file_crc_p = gdb_bfd_crc (abfd.get (), &file_crc); |
5b5d99cf | 1388 | |
904578ed JK |
1389 | if (!file_crc_p) |
1390 | return 0; | |
1391 | ||
287ccc17 JK |
1392 | if (crc != file_crc) |
1393 | { | |
dccee2de TT |
1394 | unsigned long parent_crc; |
1395 | ||
0a93529c GB |
1396 | /* If the files could not be verified as different with |
1397 | bfd_stat then we need to calculate the parent's CRC | |
1398 | to verify whether the files are different or not. */ | |
904578ed | 1399 | |
dccee2de | 1400 | if (!verified_as_different) |
904578ed | 1401 | { |
dccee2de | 1402 | if (!gdb_bfd_crc (parent_objfile->obfd, &parent_crc)) |
904578ed JK |
1403 | return 0; |
1404 | } | |
1405 | ||
dccee2de | 1406 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1407 | warning (_("the debug information found in \"%s\"" |
1408 | " does not match \"%s\" (CRC mismatch).\n"), | |
4262abfb | 1409 | name, objfile_name (parent_objfile)); |
904578ed | 1410 | |
287ccc17 JK |
1411 | return 0; |
1412 | } | |
1413 | ||
1414 | return 1; | |
5b5d99cf JB |
1415 | } |
1416 | ||
aa28a74e | 1417 | char *debug_file_directory = NULL; |
920d2a44 AC |
1418 | static void |
1419 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1420 | struct cmd_list_element *c, const char *value) | |
1421 | { | |
3e43a32a MS |
1422 | fprintf_filtered (file, |
1423 | _("The directory where separate debug " | |
1424 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1425 | value); |
1426 | } | |
5b5d99cf JB |
1427 | |
1428 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1429 | #define DEBUG_SUBDIRECTORY ".debug" | |
1430 | #endif | |
1431 | ||
1db33378 PP |
1432 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1433 | where the original file resides (may not be the same as | |
1434 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1435 | looking for. CANON_DIR is the "realpath" form of DIR. |
1436 | DIR must contain a trailing '/'. | |
1437 | Returns the path of the file with separate debug info, of NULL. */ | |
1db33378 PP |
1438 | |
1439 | static char * | |
1440 | find_separate_debug_file (const char *dir, | |
1441 | const char *canon_dir, | |
1442 | const char *debuglink, | |
1443 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1444 | { |
1db33378 PP |
1445 | char *debugdir; |
1446 | char *debugfile; | |
9cce227f | 1447 | int i; |
e4ab2fad JK |
1448 | VEC (char_ptr) *debugdir_vec; |
1449 | struct cleanup *back_to; | |
1450 | int ix; | |
5b5d99cf | 1451 | |
c4dcb155 SM |
1452 | if (separate_debug_file_debug) |
1453 | printf_unfiltered (_("\nLooking for separate debug info (debug link) for " | |
1454 | "%s\n"), objfile_name (objfile)); | |
1455 | ||
325fac50 | 1456 | /* Set I to std::max (strlen (canon_dir), strlen (dir)). */ |
1ffa32ee | 1457 | i = strlen (dir); |
1db33378 PP |
1458 | if (canon_dir != NULL && strlen (canon_dir) > i) |
1459 | i = strlen (canon_dir); | |
1ffa32ee | 1460 | |
224c3ddb SM |
1461 | debugfile |
1462 | = (char *) xmalloc (strlen (debug_file_directory) + 1 | |
1463 | + i | |
1464 | + strlen (DEBUG_SUBDIRECTORY) | |
1465 | + strlen ("/") | |
1466 | + strlen (debuglink) | |
1467 | + 1); | |
5b5d99cf JB |
1468 | |
1469 | /* First try in the same directory as the original file. */ | |
1470 | strcpy (debugfile, dir); | |
1db33378 | 1471 | strcat (debugfile, debuglink); |
5b5d99cf | 1472 | |
32a0e547 | 1473 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1474 | return debugfile; |
5417f6dc | 1475 | |
5b5d99cf JB |
1476 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1477 | strcpy (debugfile, dir); | |
1478 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1479 | strcat (debugfile, "/"); | |
1db33378 | 1480 | strcat (debugfile, debuglink); |
5b5d99cf | 1481 | |
32a0e547 | 1482 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1483 | return debugfile; |
5417f6dc | 1484 | |
24ddea62 | 1485 | /* Then try in the global debugfile directories. |
f888f159 | 1486 | |
24ddea62 JK |
1487 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1488 | cause "/..." lookups. */ | |
5417f6dc | 1489 | |
e4ab2fad JK |
1490 | debugdir_vec = dirnames_to_char_ptr_vec (debug_file_directory); |
1491 | back_to = make_cleanup_free_char_ptr_vec (debugdir_vec); | |
24ddea62 | 1492 | |
e4ab2fad JK |
1493 | for (ix = 0; VEC_iterate (char_ptr, debugdir_vec, ix, debugdir); ++ix) |
1494 | { | |
1495 | strcpy (debugfile, debugdir); | |
aa28a74e | 1496 | strcat (debugfile, "/"); |
24ddea62 | 1497 | strcat (debugfile, dir); |
1db33378 | 1498 | strcat (debugfile, debuglink); |
aa28a74e | 1499 | |
32a0e547 | 1500 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
a991ac28 TT |
1501 | { |
1502 | do_cleanups (back_to); | |
1503 | return debugfile; | |
1504 | } | |
24ddea62 JK |
1505 | |
1506 | /* If the file is in the sysroot, try using its base path in the | |
1507 | global debugfile directory. */ | |
1db33378 PP |
1508 | if (canon_dir != NULL |
1509 | && filename_ncmp (canon_dir, gdb_sysroot, | |
0ba1096a | 1510 | strlen (gdb_sysroot)) == 0 |
1db33378 | 1511 | && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)])) |
24ddea62 | 1512 | { |
e4ab2fad | 1513 | strcpy (debugfile, debugdir); |
1db33378 | 1514 | strcat (debugfile, canon_dir + strlen (gdb_sysroot)); |
24ddea62 | 1515 | strcat (debugfile, "/"); |
1db33378 | 1516 | strcat (debugfile, debuglink); |
24ddea62 | 1517 | |
32a0e547 | 1518 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
a991ac28 TT |
1519 | { |
1520 | do_cleanups (back_to); | |
1521 | return debugfile; | |
1522 | } | |
24ddea62 | 1523 | } |
aa28a74e | 1524 | } |
f888f159 | 1525 | |
e4ab2fad | 1526 | do_cleanups (back_to); |
25522fae | 1527 | xfree (debugfile); |
1db33378 PP |
1528 | return NULL; |
1529 | } | |
1530 | ||
7edbb660 | 1531 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1532 | If there were no directory separators in PATH, PATH will be empty |
1533 | string on return. */ | |
1534 | ||
1535 | static void | |
1536 | terminate_after_last_dir_separator (char *path) | |
1537 | { | |
1538 | int i; | |
1539 | ||
1540 | /* Strip off the final filename part, leaving the directory name, | |
1541 | followed by a slash. The directory can be relative or absolute. */ | |
1542 | for (i = strlen(path) - 1; i >= 0; i--) | |
1543 | if (IS_DIR_SEPARATOR (path[i])) | |
1544 | break; | |
1545 | ||
1546 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1547 | path[i + 1] = '\0'; | |
1548 | } | |
1549 | ||
1550 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
1551 | Returns pathname, or NULL. */ | |
1552 | ||
1553 | char * | |
1554 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1555 | { | |
1556 | char *debuglink; | |
1557 | char *dir, *canon_dir; | |
1558 | char *debugfile; | |
1559 | unsigned long crc32; | |
1560 | struct cleanup *cleanups; | |
1561 | ||
cc0ea93c | 1562 | debuglink = bfd_get_debug_link_info (objfile->obfd, &crc32); |
1db33378 PP |
1563 | |
1564 | if (debuglink == NULL) | |
1565 | { | |
1566 | /* There's no separate debug info, hence there's no way we could | |
1567 | load it => no warning. */ | |
1568 | return NULL; | |
1569 | } | |
1570 | ||
71bdabee | 1571 | cleanups = make_cleanup (xfree, debuglink); |
4262abfb | 1572 | dir = xstrdup (objfile_name (objfile)); |
71bdabee | 1573 | make_cleanup (xfree, dir); |
1db33378 PP |
1574 | terminate_after_last_dir_separator (dir); |
1575 | canon_dir = lrealpath (dir); | |
1576 | ||
1577 | debugfile = find_separate_debug_file (dir, canon_dir, debuglink, | |
1578 | crc32, objfile); | |
1579 | xfree (canon_dir); | |
1580 | ||
1581 | if (debugfile == NULL) | |
1582 | { | |
1db33378 PP |
1583 | /* For PR gdb/9538, try again with realpath (if different from the |
1584 | original). */ | |
1585 | ||
1586 | struct stat st_buf; | |
1587 | ||
4262abfb JK |
1588 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1589 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 PP |
1590 | { |
1591 | char *symlink_dir; | |
1592 | ||
4262abfb | 1593 | symlink_dir = lrealpath (objfile_name (objfile)); |
1db33378 PP |
1594 | if (symlink_dir != NULL) |
1595 | { | |
1596 | make_cleanup (xfree, symlink_dir); | |
1597 | terminate_after_last_dir_separator (symlink_dir); | |
1598 | if (strcmp (dir, symlink_dir) != 0) | |
1599 | { | |
1600 | /* Different directory, so try using it. */ | |
1601 | debugfile = find_separate_debug_file (symlink_dir, | |
1602 | symlink_dir, | |
1603 | debuglink, | |
1604 | crc32, | |
1605 | objfile); | |
1606 | } | |
1607 | } | |
1608 | } | |
1db33378 | 1609 | } |
aa28a74e | 1610 | |
1db33378 | 1611 | do_cleanups (cleanups); |
25522fae | 1612 | return debugfile; |
5b5d99cf JB |
1613 | } |
1614 | ||
c906108c SS |
1615 | /* This is the symbol-file command. Read the file, analyze its |
1616 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1617 | the command is rather bizarre: |
1618 | ||
1619 | 1. The function buildargv implements various quoting conventions | |
1620 | which are undocumented and have little or nothing in common with | |
1621 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1622 | ||
1623 | 2. Options are used, which are not generally used in GDB (perhaps | |
1624 | "set mapped on", "set readnow on" would be better) | |
1625 | ||
1626 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1627 | conventions (because it is confusing and inconvenient). */ |
1628 | ||
1629 | void | |
fba45db2 | 1630 | symbol_file_command (char *args, int from_tty) |
c906108c | 1631 | { |
c906108c SS |
1632 | dont_repeat (); |
1633 | ||
1634 | if (args == NULL) | |
1635 | { | |
1adeb98a | 1636 | symbol_file_clear (from_tty); |
c906108c SS |
1637 | } |
1638 | else | |
1639 | { | |
b15cc25c | 1640 | objfile_flags flags = OBJF_USERLOADED; |
ecf45d2c | 1641 | symfile_add_flags add_flags = 0; |
cb2f3a29 MK |
1642 | struct cleanup *cleanups; |
1643 | char *name = NULL; | |
1644 | ||
ecf45d2c SL |
1645 | if (from_tty) |
1646 | add_flags |= SYMFILE_VERBOSE; | |
1647 | ||
773a1edc TT |
1648 | gdb_argv built_argv (args); |
1649 | for (char *arg : built_argv) | |
c906108c | 1650 | { |
773a1edc | 1651 | if (strcmp (arg, "-readnow") == 0) |
78a4a9b9 | 1652 | flags |= OBJF_READNOW; |
773a1edc TT |
1653 | else if (*arg == '-') |
1654 | error (_("unknown option `%s'"), arg); | |
78a4a9b9 AC |
1655 | else |
1656 | { | |
773a1edc TT |
1657 | symbol_file_add_main_1 (arg, add_flags, flags); |
1658 | name = arg; | |
78a4a9b9 | 1659 | } |
c906108c SS |
1660 | } |
1661 | ||
1662 | if (name == NULL) | |
cb2f3a29 | 1663 | error (_("no symbol file name was specified")); |
c906108c SS |
1664 | } |
1665 | } | |
1666 | ||
1667 | /* Set the initial language. | |
1668 | ||
cb2f3a29 MK |
1669 | FIXME: A better solution would be to record the language in the |
1670 | psymtab when reading partial symbols, and then use it (if known) to | |
1671 | set the language. This would be a win for formats that encode the | |
1672 | language in an easily discoverable place, such as DWARF. For | |
1673 | stabs, we can jump through hoops looking for specially named | |
1674 | symbols or try to intuit the language from the specific type of | |
1675 | stabs we find, but we can't do that until later when we read in | |
1676 | full symbols. */ | |
c906108c | 1677 | |
8b60591b | 1678 | void |
fba45db2 | 1679 | set_initial_language (void) |
c906108c | 1680 | { |
9e6c82ad | 1681 | enum language lang = main_language (); |
c906108c | 1682 | |
9e6c82ad | 1683 | if (lang == language_unknown) |
01f8c46d | 1684 | { |
bf6d8a91 | 1685 | char *name = main_name (); |
d12307c1 | 1686 | struct symbol *sym = lookup_symbol (name, NULL, VAR_DOMAIN, NULL).symbol; |
f888f159 | 1687 | |
bf6d8a91 TT |
1688 | if (sym != NULL) |
1689 | lang = SYMBOL_LANGUAGE (sym); | |
01f8c46d | 1690 | } |
cb2f3a29 | 1691 | |
ccefe4c4 TT |
1692 | if (lang == language_unknown) |
1693 | { | |
1694 | /* Make C the default language */ | |
1695 | lang = language_c; | |
c906108c | 1696 | } |
ccefe4c4 TT |
1697 | |
1698 | set_language (lang); | |
1699 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1700 | } |
1701 | ||
cb2f3a29 MK |
1702 | /* Open the file specified by NAME and hand it off to BFD for |
1703 | preliminary analysis. Return a newly initialized bfd *, which | |
1704 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1705 | absolute). In case of trouble, error() is called. */ | |
c906108c | 1706 | |
192b62ce | 1707 | gdb_bfd_ref_ptr |
97a41605 | 1708 | symfile_bfd_open (const char *name) |
c906108c | 1709 | { |
97a41605 GB |
1710 | int desc = -1; |
1711 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
c906108c | 1712 | |
97a41605 | 1713 | if (!is_target_filename (name)) |
f1838a98 | 1714 | { |
ee0c3293 | 1715 | char *absolute_name; |
f1838a98 | 1716 | |
ee0c3293 | 1717 | gdb::unique_xmalloc_ptr<char> expanded_name (tilde_expand (name)); |
c906108c | 1718 | |
97a41605 GB |
1719 | /* Look down path for it, allocate 2nd new malloc'd copy. */ |
1720 | desc = openp (getenv ("PATH"), | |
1721 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
ee0c3293 | 1722 | expanded_name.get (), O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1723 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
97a41605 GB |
1724 | if (desc < 0) |
1725 | { | |
ee0c3293 | 1726 | char *exename = (char *) alloca (strlen (expanded_name.get ()) + 5); |
433759f7 | 1727 | |
ee0c3293 | 1728 | strcat (strcpy (exename, expanded_name.get ()), ".exe"); |
97a41605 GB |
1729 | desc = openp (getenv ("PATH"), |
1730 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
1731 | exename, O_RDONLY | O_BINARY, &absolute_name); | |
1732 | } | |
c906108c | 1733 | #endif |
97a41605 | 1734 | if (desc < 0) |
ee0c3293 | 1735 | perror_with_name (expanded_name.get ()); |
cb2f3a29 | 1736 | |
97a41605 GB |
1737 | make_cleanup (xfree, absolute_name); |
1738 | name = absolute_name; | |
1739 | } | |
c906108c | 1740 | |
192b62ce TT |
1741 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (name, gnutarget, desc)); |
1742 | if (sym_bfd == NULL) | |
faab9922 JK |
1743 | error (_("`%s': can't open to read symbols: %s."), name, |
1744 | bfd_errmsg (bfd_get_error ())); | |
97a41605 | 1745 | |
192b62ce TT |
1746 | if (!gdb_bfd_has_target_filename (sym_bfd.get ())) |
1747 | bfd_set_cacheable (sym_bfd.get (), 1); | |
c906108c | 1748 | |
192b62ce TT |
1749 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
1750 | error (_("`%s': can't read symbols: %s."), name, | |
1751 | bfd_errmsg (bfd_get_error ())); | |
cb2f3a29 | 1752 | |
faab9922 JK |
1753 | do_cleanups (back_to); |
1754 | ||
cb2f3a29 | 1755 | return sym_bfd; |
c906108c SS |
1756 | } |
1757 | ||
cb2f3a29 MK |
1758 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1759 | the section was not found. */ | |
1760 | ||
0e931cf0 | 1761 | int |
a121b7c1 | 1762 | get_section_index (struct objfile *objfile, const char *section_name) |
0e931cf0 JB |
1763 | { |
1764 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1765 | |
0e931cf0 JB |
1766 | if (sect) |
1767 | return sect->index; | |
1768 | else | |
1769 | return -1; | |
1770 | } | |
1771 | ||
c256e171 DE |
1772 | /* Link SF into the global symtab_fns list. |
1773 | FLAVOUR is the file format that SF handles. | |
1774 | Called on startup by the _initialize routine in each object file format | |
1775 | reader, to register information about each format the reader is prepared | |
1776 | to handle. */ | |
c906108c SS |
1777 | |
1778 | void | |
c256e171 | 1779 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1780 | { |
c256e171 DE |
1781 | registered_sym_fns fns = { flavour, sf }; |
1782 | ||
1783 | VEC_safe_push (registered_sym_fns, symtab_fns, &fns); | |
c906108c SS |
1784 | } |
1785 | ||
cb2f3a29 MK |
1786 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1787 | either returns or calls error(). The result is an initialized | |
1788 | struct sym_fns in the objfile structure, that contains cached | |
1789 | information about the symbol file. */ | |
c906108c | 1790 | |
00b5771c | 1791 | static const struct sym_fns * |
31d99776 | 1792 | find_sym_fns (bfd *abfd) |
c906108c | 1793 | { |
c256e171 | 1794 | registered_sym_fns *rsf; |
31d99776 | 1795 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
00b5771c | 1796 | int i; |
c906108c | 1797 | |
75245b24 MS |
1798 | if (our_flavour == bfd_target_srec_flavour |
1799 | || our_flavour == bfd_target_ihex_flavour | |
1800 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1801 | return NULL; /* No symbols. */ |
75245b24 | 1802 | |
c256e171 DE |
1803 | for (i = 0; VEC_iterate (registered_sym_fns, symtab_fns, i, rsf); ++i) |
1804 | if (our_flavour == rsf->sym_flavour) | |
1805 | return rsf->sym_fns; | |
cb2f3a29 | 1806 | |
8a3fe4f8 | 1807 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1808 | bfd_get_target (abfd)); |
c906108c SS |
1809 | } |
1810 | \f | |
cb2f3a29 | 1811 | |
c906108c SS |
1812 | /* This function runs the load command of our current target. */ |
1813 | ||
1814 | static void | |
fba45db2 | 1815 | load_command (char *arg, int from_tty) |
c906108c | 1816 | { |
5b3fca71 TT |
1817 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
1818 | ||
e5cc9f32 JB |
1819 | dont_repeat (); |
1820 | ||
4487aabf PA |
1821 | /* The user might be reloading because the binary has changed. Take |
1822 | this opportunity to check. */ | |
1823 | reopen_exec_file (); | |
1824 | reread_symbols (); | |
1825 | ||
c906108c | 1826 | if (arg == NULL) |
1986bccd AS |
1827 | { |
1828 | char *parg; | |
1829 | int count = 0; | |
1830 | ||
1831 | parg = arg = get_exec_file (1); | |
1832 | ||
1833 | /* Count how many \ " ' tab space there are in the name. */ | |
1834 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1835 | { | |
1836 | parg++; | |
1837 | count++; | |
1838 | } | |
1839 | ||
1840 | if (count) | |
1841 | { | |
1842 | /* We need to quote this string so buildargv can pull it apart. */ | |
224c3ddb | 1843 | char *temp = (char *) xmalloc (strlen (arg) + count + 1 ); |
1986bccd AS |
1844 | char *ptemp = temp; |
1845 | char *prev; | |
1846 | ||
1847 | make_cleanup (xfree, temp); | |
1848 | ||
1849 | prev = parg = arg; | |
1850 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1851 | { | |
1852 | strncpy (ptemp, prev, parg - prev); | |
1853 | ptemp += parg - prev; | |
1854 | prev = parg++; | |
1855 | *ptemp++ = '\\'; | |
1856 | } | |
1857 | strcpy (ptemp, prev); | |
1858 | ||
1859 | arg = temp; | |
1860 | } | |
1861 | } | |
1862 | ||
c906108c | 1863 | target_load (arg, from_tty); |
2889e661 JB |
1864 | |
1865 | /* After re-loading the executable, we don't really know which | |
1866 | overlays are mapped any more. */ | |
1867 | overlay_cache_invalid = 1; | |
5b3fca71 TT |
1868 | |
1869 | do_cleanups (cleanup); | |
c906108c SS |
1870 | } |
1871 | ||
1872 | /* This version of "load" should be usable for any target. Currently | |
1873 | it is just used for remote targets, not inftarg.c or core files, | |
1874 | on the theory that only in that case is it useful. | |
1875 | ||
1876 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1877 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1878 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1879 | performance compares. */ | |
917317f4 | 1880 | |
917317f4 JM |
1881 | static int validate_download = 0; |
1882 | ||
e4f9b4d5 MS |
1883 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1884 | ||
1885 | static void | |
1886 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1887 | { | |
19ba03f4 | 1888 | bfd_size_type *sum = (bfd_size_type *) data; |
e4f9b4d5 | 1889 | |
2c500098 | 1890 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1891 | } |
1892 | ||
1893 | /* Opaque data for load_section_callback. */ | |
1894 | struct load_section_data { | |
f698ca8e | 1895 | CORE_ADDR load_offset; |
a76d924d DJ |
1896 | struct load_progress_data *progress_data; |
1897 | VEC(memory_write_request_s) *requests; | |
1898 | }; | |
1899 | ||
1900 | /* Opaque data for load_progress. */ | |
1901 | struct load_progress_data { | |
1902 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1903 | unsigned long write_count; |
1904 | unsigned long data_count; | |
1905 | bfd_size_type total_size; | |
a76d924d DJ |
1906 | }; |
1907 | ||
1908 | /* Opaque data for load_progress for a single section. */ | |
1909 | struct load_progress_section_data { | |
1910 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1911 | |
a76d924d | 1912 | /* Per-section data. */ |
cf7a04e8 DJ |
1913 | const char *section_name; |
1914 | ULONGEST section_sent; | |
1915 | ULONGEST section_size; | |
1916 | CORE_ADDR lma; | |
1917 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1918 | }; |
1919 | ||
a76d924d | 1920 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1921 | |
1922 | static void | |
1923 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1924 | { | |
19ba03f4 SM |
1925 | struct load_progress_section_data *args |
1926 | = (struct load_progress_section_data *) untyped_arg; | |
a76d924d DJ |
1927 | struct load_progress_data *totals; |
1928 | ||
1929 | if (args == NULL) | |
1930 | /* Writing padding data. No easy way to get at the cumulative | |
1931 | stats, so just ignore this. */ | |
1932 | return; | |
1933 | ||
1934 | totals = args->cumulative; | |
1935 | ||
1936 | if (bytes == 0 && args->section_sent == 0) | |
1937 | { | |
1938 | /* The write is just starting. Let the user know we've started | |
1939 | this section. */ | |
112e8700 SM |
1940 | current_uiout->message ("Loading section %s, size %s lma %s\n", |
1941 | args->section_name, | |
1942 | hex_string (args->section_size), | |
1943 | paddress (target_gdbarch (), args->lma)); | |
a76d924d DJ |
1944 | return; |
1945 | } | |
cf7a04e8 DJ |
1946 | |
1947 | if (validate_download) | |
1948 | { | |
1949 | /* Broken memories and broken monitors manifest themselves here | |
1950 | when bring new computers to life. This doubles already slow | |
1951 | downloads. */ | |
1952 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1953 | might add a verify_memory() method to the target vector and | |
1954 | then use that. remote.c could implement that method using | |
1955 | the ``qCRC'' packet. */ | |
224c3ddb | 1956 | gdb_byte *check = (gdb_byte *) xmalloc (bytes); |
cf7a04e8 DJ |
1957 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); |
1958 | ||
1959 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 | 1960 | error (_("Download verify read failed at %s"), |
f5656ead | 1961 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1962 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 | 1963 | error (_("Download verify compare failed at %s"), |
f5656ead | 1964 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 DJ |
1965 | do_cleanups (verify_cleanups); |
1966 | } | |
a76d924d | 1967 | totals->data_count += bytes; |
cf7a04e8 DJ |
1968 | args->lma += bytes; |
1969 | args->buffer += bytes; | |
a76d924d | 1970 | totals->write_count += 1; |
cf7a04e8 | 1971 | args->section_sent += bytes; |
522002f9 | 1972 | if (check_quit_flag () |
cf7a04e8 DJ |
1973 | || (deprecated_ui_load_progress_hook != NULL |
1974 | && deprecated_ui_load_progress_hook (args->section_name, | |
1975 | args->section_sent))) | |
1976 | error (_("Canceled the download")); | |
1977 | ||
1978 | if (deprecated_show_load_progress != NULL) | |
1979 | deprecated_show_load_progress (args->section_name, | |
1980 | args->section_sent, | |
1981 | args->section_size, | |
a76d924d DJ |
1982 | totals->data_count, |
1983 | totals->total_size); | |
cf7a04e8 DJ |
1984 | } |
1985 | ||
e4f9b4d5 MS |
1986 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1987 | ||
1988 | static void | |
1989 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1990 | { | |
a76d924d | 1991 | struct memory_write_request *new_request; |
19ba03f4 | 1992 | struct load_section_data *args = (struct load_section_data *) data; |
a76d924d | 1993 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1994 | bfd_size_type size = bfd_get_section_size (asec); |
1995 | gdb_byte *buffer; | |
cf7a04e8 | 1996 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1997 | |
cf7a04e8 DJ |
1998 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1999 | return; | |
e4f9b4d5 | 2000 | |
cf7a04e8 DJ |
2001 | if (size == 0) |
2002 | return; | |
e4f9b4d5 | 2003 | |
a76d924d DJ |
2004 | new_request = VEC_safe_push (memory_write_request_s, |
2005 | args->requests, NULL); | |
2006 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
8d749320 | 2007 | section_data = XCNEW (struct load_progress_section_data); |
a76d924d | 2008 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; |
3e43a32a MS |
2009 | new_request->end = new_request->begin + size; /* FIXME Should size |
2010 | be in instead? */ | |
224c3ddb | 2011 | new_request->data = (gdb_byte *) xmalloc (size); |
a76d924d | 2012 | new_request->baton = section_data; |
cf7a04e8 | 2013 | |
a76d924d | 2014 | buffer = new_request->data; |
cf7a04e8 | 2015 | |
a76d924d DJ |
2016 | section_data->cumulative = args->progress_data; |
2017 | section_data->section_name = sect_name; | |
2018 | section_data->section_size = size; | |
2019 | section_data->lma = new_request->begin; | |
2020 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
2021 | |
2022 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
2023 | } |
2024 | ||
2025 | /* Clean up an entire memory request vector, including load | |
2026 | data and progress records. */ | |
cf7a04e8 | 2027 | |
a76d924d DJ |
2028 | static void |
2029 | clear_memory_write_data (void *arg) | |
2030 | { | |
19ba03f4 | 2031 | VEC(memory_write_request_s) **vec_p = (VEC(memory_write_request_s) **) arg; |
a76d924d DJ |
2032 | VEC(memory_write_request_s) *vec = *vec_p; |
2033 | int i; | |
2034 | struct memory_write_request *mr; | |
cf7a04e8 | 2035 | |
a76d924d DJ |
2036 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
2037 | { | |
2038 | xfree (mr->data); | |
2039 | xfree (mr->baton); | |
2040 | } | |
2041 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
2042 | } |
2043 | ||
dcb07cfa PA |
2044 | static void print_transfer_performance (struct ui_file *stream, |
2045 | unsigned long data_count, | |
2046 | unsigned long write_count, | |
2047 | std::chrono::steady_clock::duration d); | |
2048 | ||
c906108c | 2049 | void |
9cbe5fff | 2050 | generic_load (const char *args, int from_tty) |
c906108c | 2051 | { |
773a1edc | 2052 | struct cleanup *old_cleanups; |
e4f9b4d5 | 2053 | struct load_section_data cbdata; |
a76d924d | 2054 | struct load_progress_data total_progress; |
79a45e25 | 2055 | struct ui_out *uiout = current_uiout; |
a76d924d | 2056 | |
e4f9b4d5 MS |
2057 | CORE_ADDR entry; |
2058 | ||
a76d924d DJ |
2059 | memset (&cbdata, 0, sizeof (cbdata)); |
2060 | memset (&total_progress, 0, sizeof (total_progress)); | |
2061 | cbdata.progress_data = &total_progress; | |
2062 | ||
773a1edc | 2063 | old_cleanups = make_cleanup (clear_memory_write_data, &cbdata.requests); |
917317f4 | 2064 | |
d1a41061 PP |
2065 | if (args == NULL) |
2066 | error_no_arg (_("file to load")); | |
1986bccd | 2067 | |
773a1edc | 2068 | gdb_argv argv (args); |
1986bccd | 2069 | |
ee0c3293 | 2070 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
1986bccd AS |
2071 | |
2072 | if (argv[1] != NULL) | |
917317f4 | 2073 | { |
f698ca8e | 2074 | const char *endptr; |
ba5f2f8a | 2075 | |
f698ca8e | 2076 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2077 | |
2078 | /* If the last word was not a valid number then | |
2079 | treat it as a file name with spaces in. */ | |
2080 | if (argv[1] == endptr) | |
2081 | error (_("Invalid download offset:%s."), argv[1]); | |
2082 | ||
2083 | if (argv[2] != NULL) | |
2084 | error (_("Too many parameters.")); | |
917317f4 | 2085 | } |
c906108c | 2086 | |
c378eb4e | 2087 | /* Open the file for loading. */ |
ee0c3293 | 2088 | gdb_bfd_ref_ptr loadfile_bfd (gdb_bfd_open (filename.get (), gnutarget, -1)); |
c906108c | 2089 | if (loadfile_bfd == NULL) |
ee0c3293 | 2090 | perror_with_name (filename.get ()); |
917317f4 | 2091 | |
192b62ce | 2092 | if (!bfd_check_format (loadfile_bfd.get (), bfd_object)) |
c906108c | 2093 | { |
ee0c3293 | 2094 | error (_("\"%s\" is not an object file: %s"), filename.get (), |
c906108c SS |
2095 | bfd_errmsg (bfd_get_error ())); |
2096 | } | |
c5aa993b | 2097 | |
192b62ce | 2098 | bfd_map_over_sections (loadfile_bfd.get (), add_section_size_callback, |
a76d924d DJ |
2099 | (void *) &total_progress.total_size); |
2100 | ||
192b62ce | 2101 | bfd_map_over_sections (loadfile_bfd.get (), load_section_callback, &cbdata); |
c2d11a7d | 2102 | |
dcb07cfa PA |
2103 | using namespace std::chrono; |
2104 | ||
2105 | steady_clock::time_point start_time = steady_clock::now (); | |
c906108c | 2106 | |
a76d924d DJ |
2107 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2108 | load_progress) != 0) | |
2109 | error (_("Load failed")); | |
c906108c | 2110 | |
dcb07cfa | 2111 | steady_clock::time_point end_time = steady_clock::now (); |
ba5f2f8a | 2112 | |
192b62ce | 2113 | entry = bfd_get_start_address (loadfile_bfd.get ()); |
8c2b9656 | 2114 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
112e8700 SM |
2115 | uiout->text ("Start address "); |
2116 | uiout->field_fmt ("address", "%s", paddress (target_gdbarch (), entry)); | |
2117 | uiout->text (", load size "); | |
2118 | uiout->field_fmt ("load-size", "%lu", total_progress.data_count); | |
2119 | uiout->text ("\n"); | |
fb14de7b | 2120 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2121 | |
38963c97 DJ |
2122 | /* Reset breakpoints, now that we have changed the load image. For |
2123 | instance, breakpoints may have been set (or reset, by | |
2124 | post_create_inferior) while connected to the target but before we | |
2125 | loaded the program. In that case, the prologue analyzer could | |
2126 | have read instructions from the target to find the right | |
2127 | breakpoint locations. Loading has changed the contents of that | |
2128 | memory. */ | |
2129 | ||
2130 | breakpoint_re_set (); | |
2131 | ||
a76d924d DJ |
2132 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2133 | total_progress.write_count, | |
dcb07cfa | 2134 | end_time - start_time); |
c906108c SS |
2135 | |
2136 | do_cleanups (old_cleanups); | |
2137 | } | |
2138 | ||
dcb07cfa PA |
2139 | /* Report on STREAM the performance of a memory transfer operation, |
2140 | such as 'load'. DATA_COUNT is the number of bytes transferred. | |
2141 | WRITE_COUNT is the number of separate write operations, or 0, if | |
2142 | that information is not available. TIME is how long the operation | |
2143 | lasted. */ | |
c906108c | 2144 | |
dcb07cfa | 2145 | static void |
d9fcf2fb | 2146 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2147 | unsigned long data_count, |
2148 | unsigned long write_count, | |
dcb07cfa | 2149 | std::chrono::steady_clock::duration time) |
917317f4 | 2150 | { |
dcb07cfa | 2151 | using namespace std::chrono; |
79a45e25 | 2152 | struct ui_out *uiout = current_uiout; |
2b71414d | 2153 | |
dcb07cfa | 2154 | milliseconds ms = duration_cast<milliseconds> (time); |
2b71414d | 2155 | |
112e8700 | 2156 | uiout->text ("Transfer rate: "); |
dcb07cfa | 2157 | if (ms.count () > 0) |
8b93c638 | 2158 | { |
dcb07cfa | 2159 | unsigned long rate = ((ULONGEST) data_count * 1000) / ms.count (); |
9f43d28c | 2160 | |
112e8700 | 2161 | if (uiout->is_mi_like_p ()) |
9f43d28c | 2162 | { |
112e8700 SM |
2163 | uiout->field_fmt ("transfer-rate", "%lu", rate * 8); |
2164 | uiout->text (" bits/sec"); | |
9f43d28c DJ |
2165 | } |
2166 | else if (rate < 1024) | |
2167 | { | |
112e8700 SM |
2168 | uiout->field_fmt ("transfer-rate", "%lu", rate); |
2169 | uiout->text (" bytes/sec"); | |
9f43d28c DJ |
2170 | } |
2171 | else | |
2172 | { | |
112e8700 SM |
2173 | uiout->field_fmt ("transfer-rate", "%lu", rate / 1024); |
2174 | uiout->text (" KB/sec"); | |
9f43d28c | 2175 | } |
8b93c638 JM |
2176 | } |
2177 | else | |
2178 | { | |
112e8700 SM |
2179 | uiout->field_fmt ("transferred-bits", "%lu", (data_count * 8)); |
2180 | uiout->text (" bits in <1 sec"); | |
8b93c638 JM |
2181 | } |
2182 | if (write_count > 0) | |
2183 | { | |
112e8700 SM |
2184 | uiout->text (", "); |
2185 | uiout->field_fmt ("write-rate", "%lu", data_count / write_count); | |
2186 | uiout->text (" bytes/write"); | |
8b93c638 | 2187 | } |
112e8700 | 2188 | uiout->text (".\n"); |
c906108c SS |
2189 | } |
2190 | ||
2191 | /* This function allows the addition of incrementally linked object files. | |
2192 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2193 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2194 | special case syntax for the rombug target (Rombug is the boot | |
2195 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2196 | rombug case, the user doesn't need to supply a text address, | |
2197 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2198 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2199 | |
c906108c | 2200 | static void |
fba45db2 | 2201 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2202 | { |
5af949e3 | 2203 | struct gdbarch *gdbarch = get_current_arch (); |
ee0c3293 | 2204 | gdb::unique_xmalloc_ptr<char> filename; |
c906108c | 2205 | char *arg; |
2acceee2 JM |
2206 | int argcnt = 0; |
2207 | int sec_num = 0; | |
db162d44 EZ |
2208 | int expecting_sec_name = 0; |
2209 | int expecting_sec_addr = 0; | |
76ad5e1e | 2210 | struct objfile *objf; |
b15cc25c PA |
2211 | objfile_flags flags = OBJF_USERLOADED | OBJF_SHARED; |
2212 | symfile_add_flags add_flags = 0; | |
2213 | ||
2214 | if (from_tty) | |
2215 | add_flags |= SYMFILE_VERBOSE; | |
db162d44 | 2216 | |
a39a16c4 | 2217 | struct sect_opt |
2acceee2 | 2218 | { |
a121b7c1 PA |
2219 | const char *name; |
2220 | const char *value; | |
a39a16c4 | 2221 | }; |
db162d44 | 2222 | |
a39a16c4 | 2223 | struct section_addr_info *section_addrs; |
f978cb06 | 2224 | std::vector<sect_opt> sect_opts; |
3017564a | 2225 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2226 | |
c906108c SS |
2227 | dont_repeat (); |
2228 | ||
2229 | if (args == NULL) | |
8a3fe4f8 | 2230 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2231 | |
773a1edc | 2232 | gdb_argv argv (args); |
db162d44 | 2233 | |
5b96932b AS |
2234 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2235 | { | |
c378eb4e | 2236 | /* Process the argument. */ |
db162d44 | 2237 | if (argcnt == 0) |
c906108c | 2238 | { |
c378eb4e | 2239 | /* The first argument is the file name. */ |
ee0c3293 | 2240 | filename.reset (tilde_expand (arg)); |
c906108c | 2241 | } |
41dc8db8 MB |
2242 | else if (argcnt == 1) |
2243 | { | |
2244 | /* The second argument is always the text address at which | |
2245 | to load the program. */ | |
f978cb06 TT |
2246 | sect_opt sect = { ".text", arg }; |
2247 | sect_opts.push_back (sect); | |
41dc8db8 | 2248 | } |
db162d44 | 2249 | else |
41dc8db8 MB |
2250 | { |
2251 | /* It's an option (starting with '-') or it's an argument | |
2252 | to an option. */ | |
41dc8db8 MB |
2253 | if (expecting_sec_name) |
2254 | { | |
f978cb06 TT |
2255 | sect_opt sect = { arg, NULL }; |
2256 | sect_opts.push_back (sect); | |
41dc8db8 MB |
2257 | expecting_sec_name = 0; |
2258 | } | |
2259 | else if (expecting_sec_addr) | |
2260 | { | |
f978cb06 | 2261 | sect_opts.back ().value = arg; |
41dc8db8 | 2262 | expecting_sec_addr = 0; |
41dc8db8 MB |
2263 | } |
2264 | else if (strcmp (arg, "-readnow") == 0) | |
2265 | flags |= OBJF_READNOW; | |
2266 | else if (strcmp (arg, "-s") == 0) | |
2267 | { | |
2268 | expecting_sec_name = 1; | |
2269 | expecting_sec_addr = 1; | |
2270 | } | |
2271 | else | |
2272 | error (_("USAGE: add-symbol-file <filename> <textaddress>" | |
2273 | " [-readnow] [-s <secname> <addr>]*")); | |
2274 | } | |
c906108c | 2275 | } |
c906108c | 2276 | |
927890d0 JB |
2277 | /* This command takes at least two arguments. The first one is a |
2278 | filename, and the second is the address where this file has been | |
2279 | loaded. Abort now if this address hasn't been provided by the | |
2280 | user. */ | |
f978cb06 | 2281 | if (sect_opts.empty ()) |
ee0c3293 TT |
2282 | error (_("The address where %s has been loaded is missing"), |
2283 | filename.get ()); | |
927890d0 | 2284 | |
c378eb4e | 2285 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2286 | a sect_addr_info structure to be passed around to other |
2287 | functions. We have to split this up into separate print | |
bb599908 | 2288 | statements because hex_string returns a local static |
c378eb4e | 2289 | string. */ |
5417f6dc | 2290 | |
ee0c3293 TT |
2291 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), |
2292 | filename.get ()); | |
f978cb06 | 2293 | section_addrs = alloc_section_addr_info (sect_opts.size ()); |
a39a16c4 | 2294 | make_cleanup (xfree, section_addrs); |
f978cb06 | 2295 | for (sect_opt § : sect_opts) |
c906108c | 2296 | { |
db162d44 | 2297 | CORE_ADDR addr; |
f978cb06 TT |
2298 | const char *val = sect.value; |
2299 | const char *sec = sect.name; | |
5417f6dc | 2300 | |
ae822768 | 2301 | addr = parse_and_eval_address (val); |
db162d44 | 2302 | |
db162d44 | 2303 | /* Here we store the section offsets in the order they were |
c378eb4e | 2304 | entered on the command line. */ |
a121b7c1 | 2305 | section_addrs->other[sec_num].name = (char *) sec; |
a39a16c4 | 2306 | section_addrs->other[sec_num].addr = addr; |
5af949e3 UW |
2307 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2308 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2309 | sec_num++; |
2310 | ||
5417f6dc | 2311 | /* The object's sections are initialized when a |
db162d44 | 2312 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2313 | This happens in reread_symbols. |
db162d44 EZ |
2314 | At this point, we don't know what file type this is, |
2315 | so we can't determine what section names are valid. */ | |
2acceee2 | 2316 | } |
d76488d8 | 2317 | section_addrs->num_sections = sec_num; |
db162d44 | 2318 | |
2acceee2 | 2319 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2320 | error (_("Not confirmed.")); |
c906108c | 2321 | |
ee0c3293 | 2322 | objf = symbol_file_add (filename.get (), add_flags, section_addrs, flags); |
76ad5e1e NB |
2323 | |
2324 | add_target_sections_of_objfile (objf); | |
c906108c SS |
2325 | |
2326 | /* Getting new symbols may change our opinion about what is | |
2327 | frameless. */ | |
2328 | reinit_frame_cache (); | |
db162d44 | 2329 | do_cleanups (my_cleanups); |
c906108c SS |
2330 | } |
2331 | \f | |
70992597 | 2332 | |
63644780 NB |
2333 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2334 | ||
2335 | static void | |
2336 | remove_symbol_file_command (char *args, int from_tty) | |
2337 | { | |
63644780 | 2338 | struct objfile *objf = NULL; |
63644780 | 2339 | struct program_space *pspace = current_program_space; |
63644780 NB |
2340 | |
2341 | dont_repeat (); | |
2342 | ||
2343 | if (args == NULL) | |
2344 | error (_("remove-symbol-file: no symbol file provided")); | |
2345 | ||
773a1edc | 2346 | gdb_argv argv (args); |
63644780 NB |
2347 | |
2348 | if (strcmp (argv[0], "-a") == 0) | |
2349 | { | |
2350 | /* Interpret the next argument as an address. */ | |
2351 | CORE_ADDR addr; | |
2352 | ||
2353 | if (argv[1] == NULL) | |
2354 | error (_("Missing address argument")); | |
2355 | ||
2356 | if (argv[2] != NULL) | |
2357 | error (_("Junk after %s"), argv[1]); | |
2358 | ||
2359 | addr = parse_and_eval_address (argv[1]); | |
2360 | ||
2361 | ALL_OBJFILES (objf) | |
2362 | { | |
d03de421 PA |
2363 | if ((objf->flags & OBJF_USERLOADED) != 0 |
2364 | && (objf->flags & OBJF_SHARED) != 0 | |
63644780 NB |
2365 | && objf->pspace == pspace && is_addr_in_objfile (addr, objf)) |
2366 | break; | |
2367 | } | |
2368 | } | |
2369 | else if (argv[0] != NULL) | |
2370 | { | |
2371 | /* Interpret the current argument as a file name. */ | |
63644780 NB |
2372 | |
2373 | if (argv[1] != NULL) | |
2374 | error (_("Junk after %s"), argv[0]); | |
2375 | ||
ee0c3293 | 2376 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
63644780 NB |
2377 | |
2378 | ALL_OBJFILES (objf) | |
2379 | { | |
d03de421 PA |
2380 | if ((objf->flags & OBJF_USERLOADED) != 0 |
2381 | && (objf->flags & OBJF_SHARED) != 0 | |
63644780 | 2382 | && objf->pspace == pspace |
ee0c3293 | 2383 | && filename_cmp (filename.get (), objfile_name (objf)) == 0) |
63644780 NB |
2384 | break; |
2385 | } | |
2386 | } | |
2387 | ||
2388 | if (objf == NULL) | |
2389 | error (_("No symbol file found")); | |
2390 | ||
2391 | if (from_tty | |
2392 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2393 | objfile_name (objf))) | |
2394 | error (_("Not confirmed.")); | |
2395 | ||
2396 | free_objfile (objf); | |
2397 | clear_symtab_users (0); | |
63644780 NB |
2398 | } |
2399 | ||
c906108c | 2400 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2401 | |
c906108c | 2402 | void |
fba45db2 | 2403 | reread_symbols (void) |
c906108c SS |
2404 | { |
2405 | struct objfile *objfile; | |
2406 | long new_modtime; | |
c906108c SS |
2407 | struct stat new_statbuf; |
2408 | int res; | |
4c404b8b | 2409 | std::vector<struct objfile *> new_objfiles; |
c906108c SS |
2410 | |
2411 | /* With the addition of shared libraries, this should be modified, | |
2412 | the load time should be saved in the partial symbol tables, since | |
2413 | different tables may come from different source files. FIXME. | |
2414 | This routine should then walk down each partial symbol table | |
c378eb4e | 2415 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2416 | |
c5aa993b JM |
2417 | for (objfile = object_files; objfile; objfile = objfile->next) |
2418 | { | |
9cce227f TG |
2419 | if (objfile->obfd == NULL) |
2420 | continue; | |
2421 | ||
2422 | /* Separate debug objfiles are handled in the main objfile. */ | |
2423 | if (objfile->separate_debug_objfile_backlink) | |
2424 | continue; | |
2425 | ||
02aeec7b JB |
2426 | /* If this object is from an archive (what you usually create with |
2427 | `ar', often called a `static library' on most systems, though | |
2428 | a `shared library' on AIX is also an archive), then you should | |
2429 | stat on the archive name, not member name. */ | |
9cce227f TG |
2430 | if (objfile->obfd->my_archive) |
2431 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2432 | else | |
4262abfb | 2433 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2434 | if (res != 0) |
2435 | { | |
c378eb4e | 2436 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
9cce227f | 2437 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
4262abfb | 2438 | objfile_name (objfile)); |
9cce227f TG |
2439 | continue; |
2440 | } | |
2441 | new_modtime = new_statbuf.st_mtime; | |
2442 | if (new_modtime != objfile->mtime) | |
2443 | { | |
2444 | struct cleanup *old_cleanups; | |
2445 | struct section_offsets *offsets; | |
2446 | int num_offsets; | |
24ba069a | 2447 | char *original_name; |
9cce227f TG |
2448 | |
2449 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
4262abfb | 2450 | objfile_name (objfile)); |
9cce227f TG |
2451 | |
2452 | /* There are various functions like symbol_file_add, | |
2453 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2454 | appear to do what we want. But they have various other | |
2455 | effects which we *don't* want. So we just do stuff | |
2456 | ourselves. We don't worry about mapped files (for one thing, | |
2457 | any mapped file will be out of date). */ | |
2458 | ||
2459 | /* If we get an error, blow away this objfile (not sure if | |
2460 | that is the correct response for things like shared | |
2461 | libraries). */ | |
2462 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2463 | /* We need to do this whenever any symbols go away. */ | |
2464 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2465 | ||
0ba1096a KT |
2466 | if (exec_bfd != NULL |
2467 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2468 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2469 | { |
2470 | /* Reload EXEC_BFD without asking anything. */ | |
2471 | ||
2472 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2473 | } | |
2474 | ||
f6eeced0 JK |
2475 | /* Keep the calls order approx. the same as in free_objfile. */ |
2476 | ||
2477 | /* Free the separate debug objfiles. It will be | |
2478 | automatically recreated by sym_read. */ | |
2479 | free_objfile_separate_debug (objfile); | |
2480 | ||
2481 | /* Remove any references to this objfile in the global | |
2482 | value lists. */ | |
2483 | preserve_values (objfile); | |
2484 | ||
2485 | /* Nuke all the state that we will re-read. Much of the following | |
2486 | code which sets things to NULL really is necessary to tell | |
2487 | other parts of GDB that there is nothing currently there. | |
2488 | ||
2489 | Try to keep the freeing order compatible with free_objfile. */ | |
2490 | ||
2491 | if (objfile->sf != NULL) | |
2492 | { | |
2493 | (*objfile->sf->sym_finish) (objfile); | |
2494 | } | |
2495 | ||
2496 | clear_objfile_data (objfile); | |
2497 | ||
e1507e95 | 2498 | /* Clean up any state BFD has sitting around. */ |
a4453b7e | 2499 | { |
192b62ce | 2500 | gdb_bfd_ref_ptr obfd (objfile->obfd); |
d3846e71 | 2501 | char *obfd_filename; |
a4453b7e TT |
2502 | |
2503 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2504 | /* Open the new BFD before freeing the old one, so that | |
2505 | the filename remains live. */ | |
192b62ce TT |
2506 | gdb_bfd_ref_ptr temp (gdb_bfd_open (obfd_filename, gnutarget, -1)); |
2507 | objfile->obfd = temp.release (); | |
e1507e95 | 2508 | if (objfile->obfd == NULL) |
192b62ce | 2509 | error (_("Can't open %s to read symbols."), obfd_filename); |
a4453b7e TT |
2510 | } |
2511 | ||
24ba069a JK |
2512 | original_name = xstrdup (objfile->original_name); |
2513 | make_cleanup (xfree, original_name); | |
2514 | ||
9cce227f TG |
2515 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2516 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
4262abfb | 2517 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2518 | bfd_errmsg (bfd_get_error ())); |
2519 | ||
2520 | /* Save the offsets, we will nuke them with the rest of the | |
2521 | objfile_obstack. */ | |
2522 | num_offsets = objfile->num_sections; | |
2523 | offsets = ((struct section_offsets *) | |
2524 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2525 | memcpy (offsets, objfile->section_offsets, | |
2526 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2527 | ||
9cce227f TG |
2528 | /* FIXME: Do we have to free a whole linked list, or is this |
2529 | enough? */ | |
2530 | if (objfile->global_psymbols.list) | |
2531 | xfree (objfile->global_psymbols.list); | |
2532 | memset (&objfile->global_psymbols, 0, | |
2533 | sizeof (objfile->global_psymbols)); | |
2534 | if (objfile->static_psymbols.list) | |
2535 | xfree (objfile->static_psymbols.list); | |
2536 | memset (&objfile->static_psymbols, 0, | |
2537 | sizeof (objfile->static_psymbols)); | |
2538 | ||
c378eb4e | 2539 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2540 | psymbol_bcache_free (objfile->psymbol_cache); |
2541 | objfile->psymbol_cache = psymbol_bcache_init (); | |
41664b45 DG |
2542 | |
2543 | /* NB: after this call to obstack_free, objfiles_changed | |
2544 | will need to be called (see discussion below). */ | |
9cce227f TG |
2545 | obstack_free (&objfile->objfile_obstack, 0); |
2546 | objfile->sections = NULL; | |
43f3e411 | 2547 | objfile->compunit_symtabs = NULL; |
9cce227f TG |
2548 | objfile->psymtabs = NULL; |
2549 | objfile->psymtabs_addrmap = NULL; | |
2550 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2551 | objfile->template_symbols = NULL; |
9cce227f | 2552 | |
9cce227f TG |
2553 | /* obstack_init also initializes the obstack so it is |
2554 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2555 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2556 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2557 | |
846060df JB |
2558 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2559 | data on the objfile's obstack (if sharing data across | |
2560 | multiple users is not possible), so it's important to | |
2561 | do it *after* the obstack has been initialized. */ | |
2562 | set_objfile_per_bfd (objfile); | |
2563 | ||
224c3ddb SM |
2564 | objfile->original_name |
2565 | = (char *) obstack_copy0 (&objfile->objfile_obstack, original_name, | |
2566 | strlen (original_name)); | |
24ba069a | 2567 | |
779bd270 DE |
2568 | /* Reset the sym_fns pointer. The ELF reader can change it |
2569 | based on whether .gdb_index is present, and we need it to | |
2570 | start over. PR symtab/15885 */ | |
8fb8eb5c | 2571 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
779bd270 | 2572 | |
d82ea6a8 | 2573 | build_objfile_section_table (objfile); |
9cce227f TG |
2574 | terminate_minimal_symbol_table (objfile); |
2575 | ||
2576 | /* We use the same section offsets as from last time. I'm not | |
2577 | sure whether that is always correct for shared libraries. */ | |
2578 | objfile->section_offsets = (struct section_offsets *) | |
2579 | obstack_alloc (&objfile->objfile_obstack, | |
2580 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2581 | memcpy (objfile->section_offsets, offsets, | |
2582 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2583 | objfile->num_sections = num_offsets; | |
2584 | ||
2585 | /* What the hell is sym_new_init for, anyway? The concept of | |
2586 | distinguishing between the main file and additional files | |
2587 | in this way seems rather dubious. */ | |
2588 | if (objfile == symfile_objfile) | |
c906108c | 2589 | { |
9cce227f | 2590 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2591 | } |
9cce227f TG |
2592 | |
2593 | (*objfile->sf->sym_init) (objfile); | |
2594 | clear_complaints (&symfile_complaints, 1, 1); | |
608e2dbb TT |
2595 | |
2596 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
41664b45 DG |
2597 | |
2598 | /* We are about to read new symbols and potentially also | |
2599 | DWARF information. Some targets may want to pass addresses | |
2600 | read from DWARF DIE's through an adjustment function before | |
2601 | saving them, like MIPS, which may call into | |
2602 | "find_pc_section". When called, that function will make | |
2603 | use of per-objfile program space data. | |
2604 | ||
2605 | Since we discarded our section information above, we have | |
2606 | dangling pointers in the per-objfile program space data | |
2607 | structure. Force GDB to update the section mapping | |
2608 | information by letting it know the objfile has changed, | |
2609 | making the dangling pointers point to correct data | |
2610 | again. */ | |
2611 | ||
2612 | objfiles_changed (); | |
2613 | ||
608e2dbb | 2614 | read_symbols (objfile, 0); |
b11896a5 | 2615 | |
9cce227f | 2616 | if (!objfile_has_symbols (objfile)) |
c906108c | 2617 | { |
9cce227f TG |
2618 | wrap_here (""); |
2619 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2620 | wrap_here (""); | |
c5aa993b | 2621 | } |
9cce227f TG |
2622 | |
2623 | /* We're done reading the symbol file; finish off complaints. */ | |
2624 | clear_complaints (&symfile_complaints, 0, 1); | |
2625 | ||
2626 | /* Getting new symbols may change our opinion about what is | |
2627 | frameless. */ | |
2628 | ||
2629 | reinit_frame_cache (); | |
2630 | ||
2631 | /* Discard cleanups as symbol reading was successful. */ | |
2632 | discard_cleanups (old_cleanups); | |
2633 | ||
2634 | /* If the mtime has changed between the time we set new_modtime | |
2635 | and now, we *want* this to be out of date, so don't call stat | |
2636 | again now. */ | |
2637 | objfile->mtime = new_modtime; | |
9cce227f | 2638 | init_entry_point_info (objfile); |
4ac39b97 | 2639 | |
4c404b8b | 2640 | new_objfiles.push_back (objfile); |
c906108c SS |
2641 | } |
2642 | } | |
c906108c | 2643 | |
4c404b8b | 2644 | if (!new_objfiles.empty ()) |
ea53e89f | 2645 | { |
c1e56572 | 2646 | clear_symtab_users (0); |
4ac39b97 JK |
2647 | |
2648 | /* clear_objfile_data for each objfile was called before freeing it and | |
2649 | observer_notify_new_objfile (NULL) has been called by | |
2650 | clear_symtab_users above. Notify the new files now. */ | |
4c404b8b TT |
2651 | for (auto iter : new_objfiles) |
2652 | observer_notify_new_objfile (iter); | |
4ac39b97 | 2653 | |
ea53e89f JB |
2654 | /* At least one objfile has changed, so we can consider that |
2655 | the executable we're debugging has changed too. */ | |
781b42b0 | 2656 | observer_notify_executable_changed (); |
ea53e89f | 2657 | } |
c906108c | 2658 | } |
c906108c SS |
2659 | \f |
2660 | ||
c5aa993b JM |
2661 | typedef struct |
2662 | { | |
2663 | char *ext; | |
c906108c | 2664 | enum language lang; |
3fcf0b0d TT |
2665 | } filename_language; |
2666 | ||
2667 | DEF_VEC_O (filename_language); | |
c906108c | 2668 | |
3fcf0b0d | 2669 | static VEC (filename_language) *filename_language_table; |
c906108c | 2670 | |
56618e20 TT |
2671 | /* See symfile.h. */ |
2672 | ||
2673 | void | |
2674 | add_filename_language (const char *ext, enum language lang) | |
c906108c | 2675 | { |
3fcf0b0d TT |
2676 | filename_language entry; |
2677 | ||
2678 | entry.ext = xstrdup (ext); | |
2679 | entry.lang = lang; | |
c906108c | 2680 | |
3fcf0b0d | 2681 | VEC_safe_push (filename_language, filename_language_table, &entry); |
c906108c SS |
2682 | } |
2683 | ||
2684 | static char *ext_args; | |
920d2a44 AC |
2685 | static void |
2686 | show_ext_args (struct ui_file *file, int from_tty, | |
2687 | struct cmd_list_element *c, const char *value) | |
2688 | { | |
3e43a32a MS |
2689 | fprintf_filtered (file, |
2690 | _("Mapping between filename extension " | |
2691 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2692 | value); |
2693 | } | |
c906108c SS |
2694 | |
2695 | static void | |
26c41df3 | 2696 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2697 | { |
2698 | int i; | |
2699 | char *cp = ext_args; | |
2700 | enum language lang; | |
3fcf0b0d | 2701 | filename_language *entry; |
c906108c | 2702 | |
c378eb4e | 2703 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2704 | if (*cp != '.') |
8a3fe4f8 | 2705 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2706 | |
2707 | /* Find end of first arg. */ | |
c5aa993b | 2708 | while (*cp && !isspace (*cp)) |
c906108c SS |
2709 | cp++; |
2710 | ||
2711 | if (*cp == '\0') | |
3e43a32a MS |
2712 | error (_("'%s': two arguments required -- " |
2713 | "filename extension and language"), | |
c906108c SS |
2714 | ext_args); |
2715 | ||
c378eb4e | 2716 | /* Null-terminate first arg. */ |
c5aa993b | 2717 | *cp++ = '\0'; |
c906108c SS |
2718 | |
2719 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2720 | cp = skip_spaces (cp); |
c906108c SS |
2721 | |
2722 | if (*cp == '\0') | |
3e43a32a MS |
2723 | error (_("'%s': two arguments required -- " |
2724 | "filename extension and language"), | |
c906108c SS |
2725 | ext_args); |
2726 | ||
2727 | /* Lookup the language from among those we know. */ | |
2728 | lang = language_enum (cp); | |
2729 | ||
2730 | /* Now lookup the filename extension: do we already know it? */ | |
3fcf0b0d TT |
2731 | for (i = 0; |
2732 | VEC_iterate (filename_language, filename_language_table, i, entry); | |
2733 | ++i) | |
2734 | { | |
2735 | if (0 == strcmp (ext_args, entry->ext)) | |
2736 | break; | |
2737 | } | |
c906108c | 2738 | |
3fcf0b0d | 2739 | if (entry == NULL) |
c906108c | 2740 | { |
c378eb4e | 2741 | /* New file extension. */ |
c906108c SS |
2742 | add_filename_language (ext_args, lang); |
2743 | } | |
2744 | else | |
2745 | { | |
c378eb4e | 2746 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2747 | |
2748 | /* if (from_tty) */ | |
2749 | /* query ("Really make files of type %s '%s'?", */ | |
2750 | /* ext_args, language_str (lang)); */ | |
2751 | ||
3fcf0b0d TT |
2752 | xfree (entry->ext); |
2753 | entry->ext = xstrdup (ext_args); | |
2754 | entry->lang = lang; | |
c906108c SS |
2755 | } |
2756 | } | |
2757 | ||
2758 | static void | |
fba45db2 | 2759 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2760 | { |
2761 | int i; | |
3fcf0b0d | 2762 | filename_language *entry; |
c906108c | 2763 | |
a3f17187 | 2764 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c | 2765 | printf_filtered ("\n\n"); |
3fcf0b0d TT |
2766 | for (i = 0; |
2767 | VEC_iterate (filename_language, filename_language_table, i, entry); | |
2768 | ++i) | |
2769 | printf_filtered ("\t%s\t- %s\n", entry->ext, language_str (entry->lang)); | |
c906108c SS |
2770 | } |
2771 | ||
c906108c | 2772 | enum language |
dd786858 | 2773 | deduce_language_from_filename (const char *filename) |
c906108c SS |
2774 | { |
2775 | int i; | |
e6a959d6 | 2776 | const char *cp; |
c906108c SS |
2777 | |
2778 | if (filename != NULL) | |
2779 | if ((cp = strrchr (filename, '.')) != NULL) | |
3fcf0b0d TT |
2780 | { |
2781 | filename_language *entry; | |
2782 | ||
2783 | for (i = 0; | |
2784 | VEC_iterate (filename_language, filename_language_table, i, entry); | |
2785 | ++i) | |
2786 | if (strcmp (cp, entry->ext) == 0) | |
2787 | return entry->lang; | |
2788 | } | |
c906108c SS |
2789 | |
2790 | return language_unknown; | |
2791 | } | |
2792 | \f | |
43f3e411 DE |
2793 | /* Allocate and initialize a new symbol table. |
2794 | CUST is from the result of allocate_compunit_symtab. */ | |
c906108c SS |
2795 | |
2796 | struct symtab * | |
43f3e411 | 2797 | allocate_symtab (struct compunit_symtab *cust, const char *filename) |
c906108c | 2798 | { |
43f3e411 DE |
2799 | struct objfile *objfile = cust->objfile; |
2800 | struct symtab *symtab | |
2801 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symtab); | |
c906108c | 2802 | |
19ba03f4 SM |
2803 | symtab->filename |
2804 | = (const char *) bcache (filename, strlen (filename) + 1, | |
21ea9eec | 2805 | objfile->per_bfd->filename_cache); |
c5aa993b JM |
2806 | symtab->fullname = NULL; |
2807 | symtab->language = deduce_language_from_filename (filename); | |
c906108c | 2808 | |
db0fec5c DE |
2809 | /* This can be very verbose with lots of headers. |
2810 | Only print at higher debug levels. */ | |
2811 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2812 | { |
2813 | /* Be a bit clever with debugging messages, and don't print objfile | |
2814 | every time, only when it changes. */ | |
2815 | static char *last_objfile_name = NULL; | |
2816 | ||
2817 | if (last_objfile_name == NULL | |
4262abfb | 2818 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
45cfd468 DE |
2819 | { |
2820 | xfree (last_objfile_name); | |
4262abfb | 2821 | last_objfile_name = xstrdup (objfile_name (objfile)); |
45cfd468 DE |
2822 | fprintf_unfiltered (gdb_stdlog, |
2823 | "Creating one or more symtabs for objfile %s ...\n", | |
2824 | last_objfile_name); | |
2825 | } | |
2826 | fprintf_unfiltered (gdb_stdlog, | |
b3dbbd6f PM |
2827 | "Created symtab %s for module %s.\n", |
2828 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2829 | } |
2830 | ||
43f3e411 DE |
2831 | /* Add it to CUST's list of symtabs. */ |
2832 | if (cust->filetabs == NULL) | |
2833 | { | |
2834 | cust->filetabs = symtab; | |
2835 | cust->last_filetab = symtab; | |
2836 | } | |
2837 | else | |
2838 | { | |
2839 | cust->last_filetab->next = symtab; | |
2840 | cust->last_filetab = symtab; | |
2841 | } | |
2842 | ||
2843 | /* Backlink to the containing compunit symtab. */ | |
2844 | symtab->compunit_symtab = cust; | |
2845 | ||
2846 | return symtab; | |
2847 | } | |
2848 | ||
2849 | /* Allocate and initialize a new compunit. | |
2850 | NAME is the name of the main source file, if there is one, or some | |
2851 | descriptive text if there are no source files. */ | |
2852 | ||
2853 | struct compunit_symtab * | |
2854 | allocate_compunit_symtab (struct objfile *objfile, const char *name) | |
2855 | { | |
2856 | struct compunit_symtab *cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2857 | struct compunit_symtab); | |
2858 | const char *saved_name; | |
2859 | ||
2860 | cu->objfile = objfile; | |
2861 | ||
2862 | /* The name we record here is only for display/debugging purposes. | |
2863 | Just save the basename to avoid path issues (too long for display, | |
2864 | relative vs absolute, etc.). */ | |
2865 | saved_name = lbasename (name); | |
224c3ddb SM |
2866 | cu->name |
2867 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, saved_name, | |
2868 | strlen (saved_name)); | |
43f3e411 DE |
2869 | |
2870 | COMPUNIT_DEBUGFORMAT (cu) = "unknown"; | |
2871 | ||
2872 | if (symtab_create_debug) | |
2873 | { | |
2874 | fprintf_unfiltered (gdb_stdlog, | |
2875 | "Created compunit symtab %s for %s.\n", | |
2876 | host_address_to_string (cu), | |
2877 | cu->name); | |
2878 | } | |
2879 | ||
2880 | return cu; | |
2881 | } | |
2882 | ||
2883 | /* Hook CU to the objfile it comes from. */ | |
2884 | ||
2885 | void | |
2886 | add_compunit_symtab_to_objfile (struct compunit_symtab *cu) | |
2887 | { | |
2888 | cu->next = cu->objfile->compunit_symtabs; | |
2889 | cu->objfile->compunit_symtabs = cu; | |
c906108c | 2890 | } |
c906108c | 2891 | \f |
c5aa993b | 2892 | |
b15cc25c PA |
2893 | /* Reset all data structures in gdb which may contain references to |
2894 | symbol table data. */ | |
c906108c SS |
2895 | |
2896 | void | |
b15cc25c | 2897 | clear_symtab_users (symfile_add_flags add_flags) |
c906108c SS |
2898 | { |
2899 | /* Someday, we should do better than this, by only blowing away | |
2900 | the things that really need to be blown. */ | |
c0501be5 DJ |
2901 | |
2902 | /* Clear the "current" symtab first, because it is no longer valid. | |
2903 | breakpoint_re_set may try to access the current symtab. */ | |
2904 | clear_current_source_symtab_and_line (); | |
2905 | ||
c906108c | 2906 | clear_displays (); |
1bfeeb0f | 2907 | clear_last_displayed_sal (); |
c906108c | 2908 | clear_pc_function_cache (); |
06d3b283 | 2909 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2910 | |
2911 | /* Clear globals which might have pointed into a removed objfile. | |
2912 | FIXME: It's not clear which of these are supposed to persist | |
2913 | between expressions and which ought to be reset each time. */ | |
2914 | expression_context_block = NULL; | |
2915 | innermost_block = NULL; | |
8756216b DP |
2916 | |
2917 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2918 | varobj_invalidate (); | |
2919 | ||
e700d1b2 JB |
2920 | /* Now that the various caches have been cleared, we can re_set |
2921 | our breakpoints without risking it using stale data. */ | |
2922 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) | |
2923 | breakpoint_re_set (); | |
c906108c SS |
2924 | } |
2925 | ||
74b7792f AC |
2926 | static void |
2927 | clear_symtab_users_cleanup (void *ignore) | |
2928 | { | |
c1e56572 | 2929 | clear_symtab_users (0); |
74b7792f | 2930 | } |
c906108c | 2931 | \f |
c906108c SS |
2932 | /* OVERLAYS: |
2933 | The following code implements an abstraction for debugging overlay sections. | |
2934 | ||
2935 | The target model is as follows: | |
2936 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2937 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2938 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2939 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2940 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2941 | sections should be considered to be mapped from the VMA to the LMA. |
2942 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2943 | For instance, if a section has been mapped then its contents |
c5aa993b | 2944 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2945 | |
2946 | Two levels of debugger support for overlays are available. One is | |
2947 | "manual", in which the debugger relies on the user to tell it which | |
2948 | overlays are currently mapped. This level of support is | |
2949 | implemented entirely in the core debugger, and the information about | |
2950 | whether a section is mapped is kept in the objfile->obj_section table. | |
2951 | ||
2952 | The second level of support is "automatic", and is only available if | |
2953 | the target-specific code provides functionality to read the target's | |
2954 | overlay mapping table, and translate its contents for the debugger | |
2955 | (by updating the mapped state information in the obj_section tables). | |
2956 | ||
2957 | The interface is as follows: | |
c5aa993b JM |
2958 | User commands: |
2959 | overlay map <name> -- tell gdb to consider this section mapped | |
2960 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2961 | overlay list -- list the sections that GDB thinks are mapped | |
2962 | overlay read-target -- get the target's state of what's mapped | |
2963 | overlay off/manual/auto -- set overlay debugging state | |
2964 | Functional interface: | |
2965 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2966 | section, return that section. | |
5417f6dc | 2967 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2968 | the pc, either in its VMA or its LMA |
714835d5 | 2969 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2970 | section_is_overlay(sect): true if section's VMA != LMA |
2971 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2972 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2973 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2974 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2975 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2976 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2977 | either in VMA or LMA depending on whether | |
c378eb4e | 2978 | the symbol's section is currently mapped. */ |
c906108c SS |
2979 | |
2980 | /* Overlay debugging state: */ | |
2981 | ||
d874f1e2 | 2982 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2983 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2984 | |
c906108c | 2985 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2986 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2987 | SECTION is loaded at an address different from where it will "run". */ |
2988 | ||
2989 | int | |
714835d5 | 2990 | section_is_overlay (struct obj_section *section) |
c906108c | 2991 | { |
714835d5 UW |
2992 | if (overlay_debugging && section) |
2993 | { | |
2994 | bfd *abfd = section->objfile->obfd; | |
2995 | asection *bfd_section = section->the_bfd_section; | |
f888f159 | 2996 | |
714835d5 UW |
2997 | if (bfd_section_lma (abfd, bfd_section) != 0 |
2998 | && bfd_section_lma (abfd, bfd_section) | |
2999 | != bfd_section_vma (abfd, bfd_section)) | |
3000 | return 1; | |
3001 | } | |
c906108c SS |
3002 | |
3003 | return 0; | |
3004 | } | |
3005 | ||
3006 | /* Function: overlay_invalidate_all (void) | |
3007 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
3008 | ||
3009 | static void | |
fba45db2 | 3010 | overlay_invalidate_all (void) |
c906108c | 3011 | { |
c5aa993b | 3012 | struct objfile *objfile; |
c906108c SS |
3013 | struct obj_section *sect; |
3014 | ||
3015 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
3016 | if (section_is_overlay (sect)) |
3017 | sect->ovly_mapped = -1; | |
c906108c SS |
3018 | } |
3019 | ||
714835d5 | 3020 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 3021 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3022 | |
3023 | Access to the ovly_mapped flag is restricted to this function, so | |
3024 | that we can do automatic update. If the global flag | |
3025 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3026 | overlay_invalidate_all. If the mapped state of the particular | |
3027 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3028 | ||
714835d5 UW |
3029 | int |
3030 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3031 | { |
9216df95 UW |
3032 | struct gdbarch *gdbarch; |
3033 | ||
714835d5 | 3034 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3035 | return 0; |
3036 | ||
c5aa993b | 3037 | switch (overlay_debugging) |
c906108c SS |
3038 | { |
3039 | default: | |
d874f1e2 | 3040 | case ovly_off: |
c5aa993b | 3041 | return 0; /* overlay debugging off */ |
d874f1e2 | 3042 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3043 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3044 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3045 | gdbarch = get_objfile_arch (osect->objfile); |
3046 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3047 | { |
3048 | if (overlay_cache_invalid) | |
3049 | { | |
3050 | overlay_invalidate_all (); | |
3051 | overlay_cache_invalid = 0; | |
3052 | } | |
3053 | if (osect->ovly_mapped == -1) | |
9216df95 | 3054 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
3055 | } |
3056 | /* fall thru to manual case */ | |
d874f1e2 | 3057 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3058 | return osect->ovly_mapped == 1; |
3059 | } | |
3060 | } | |
3061 | ||
c906108c SS |
3062 | /* Function: pc_in_unmapped_range |
3063 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3064 | ||
3065 | CORE_ADDR | |
714835d5 | 3066 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3067 | { |
714835d5 UW |
3068 | if (section_is_overlay (section)) |
3069 | { | |
3070 | bfd *abfd = section->objfile->obfd; | |
3071 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3072 | |
714835d5 UW |
3073 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3074 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3075 | CORE_ADDR offset = obj_section_offset (section); | |
3076 | ||
3077 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3078 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3079 | return 1; | |
3080 | } | |
c906108c | 3081 | |
c906108c SS |
3082 | return 0; |
3083 | } | |
3084 | ||
3085 | /* Function: pc_in_mapped_range | |
3086 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3087 | ||
3088 | CORE_ADDR | |
714835d5 | 3089 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3090 | { |
714835d5 UW |
3091 | if (section_is_overlay (section)) |
3092 | { | |
3093 | if (obj_section_addr (section) <= pc | |
3094 | && pc < obj_section_endaddr (section)) | |
3095 | return 1; | |
3096 | } | |
c906108c | 3097 | |
c906108c SS |
3098 | return 0; |
3099 | } | |
3100 | ||
9ec8e6a0 JB |
3101 | /* Return true if the mapped ranges of sections A and B overlap, false |
3102 | otherwise. */ | |
3b7bacac | 3103 | |
b9362cc7 | 3104 | static int |
714835d5 | 3105 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3106 | { |
714835d5 UW |
3107 | CORE_ADDR a_start = obj_section_addr (a); |
3108 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3109 | CORE_ADDR b_start = obj_section_addr (b); | |
3110 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3111 | |
3112 | return (a_start < b_end && b_start < a_end); | |
3113 | } | |
3114 | ||
c906108c SS |
3115 | /* Function: overlay_unmapped_address (PC, SECTION) |
3116 | Returns the address corresponding to PC in the unmapped (load) range. | |
3117 | May be the same as PC. */ | |
3118 | ||
3119 | CORE_ADDR | |
714835d5 | 3120 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3121 | { |
714835d5 UW |
3122 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3123 | { | |
3124 | bfd *abfd = section->objfile->obfd; | |
3125 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3126 | |
714835d5 UW |
3127 | return pc + bfd_section_lma (abfd, bfd_section) |
3128 | - bfd_section_vma (abfd, bfd_section); | |
3129 | } | |
c906108c SS |
3130 | |
3131 | return pc; | |
3132 | } | |
3133 | ||
3134 | /* Function: overlay_mapped_address (PC, SECTION) | |
3135 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3136 | May be the same as PC. */ | |
3137 | ||
3138 | CORE_ADDR | |
714835d5 | 3139 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3140 | { |
714835d5 UW |
3141 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3142 | { | |
3143 | bfd *abfd = section->objfile->obfd; | |
3144 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3145 | |
714835d5 UW |
3146 | return pc + bfd_section_vma (abfd, bfd_section) |
3147 | - bfd_section_lma (abfd, bfd_section); | |
3148 | } | |
c906108c SS |
3149 | |
3150 | return pc; | |
3151 | } | |
3152 | ||
5417f6dc | 3153 | /* Function: symbol_overlayed_address |
c906108c SS |
3154 | Return one of two addresses (relative to the VMA or to the LMA), |
3155 | depending on whether the section is mapped or not. */ | |
3156 | ||
c5aa993b | 3157 | CORE_ADDR |
714835d5 | 3158 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3159 | { |
3160 | if (overlay_debugging) | |
3161 | { | |
c378eb4e | 3162 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3163 | if (section == 0) |
3164 | return address; | |
c378eb4e MS |
3165 | /* If the symbol's section is not an overlay, just return its |
3166 | address. */ | |
c906108c SS |
3167 | if (!section_is_overlay (section)) |
3168 | return address; | |
c378eb4e | 3169 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3170 | if (section_is_mapped (section)) |
3171 | return address; | |
3172 | /* | |
3173 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3174 | * then return its LOADED address rather than its vma address!! | |
3175 | */ | |
3176 | return overlay_unmapped_address (address, section); | |
3177 | } | |
3178 | return address; | |
3179 | } | |
3180 | ||
5417f6dc | 3181 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3182 | Return the best-match overlay section for PC: |
3183 | If PC matches a mapped overlay section's VMA, return that section. | |
3184 | Else if PC matches an unmapped section's VMA, return that section. | |
3185 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3186 | ||
714835d5 | 3187 | struct obj_section * |
fba45db2 | 3188 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3189 | { |
c5aa993b | 3190 | struct objfile *objfile; |
c906108c SS |
3191 | struct obj_section *osect, *best_match = NULL; |
3192 | ||
3193 | if (overlay_debugging) | |
b631e59b KT |
3194 | { |
3195 | ALL_OBJSECTIONS (objfile, osect) | |
3196 | if (section_is_overlay (osect)) | |
c5aa993b | 3197 | { |
b631e59b KT |
3198 | if (pc_in_mapped_range (pc, osect)) |
3199 | { | |
3200 | if (section_is_mapped (osect)) | |
3201 | return osect; | |
3202 | else | |
3203 | best_match = osect; | |
3204 | } | |
3205 | else if (pc_in_unmapped_range (pc, osect)) | |
c5aa993b JM |
3206 | best_match = osect; |
3207 | } | |
b631e59b | 3208 | } |
714835d5 | 3209 | return best_match; |
c906108c SS |
3210 | } |
3211 | ||
3212 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3213 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3214 | currently marked as MAPPED, return that section. Else return NULL. */ |
3215 | ||
714835d5 | 3216 | struct obj_section * |
fba45db2 | 3217 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3218 | { |
c5aa993b | 3219 | struct objfile *objfile; |
c906108c SS |
3220 | struct obj_section *osect; |
3221 | ||
3222 | if (overlay_debugging) | |
b631e59b KT |
3223 | { |
3224 | ALL_OBJSECTIONS (objfile, osect) | |
3225 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) | |
3226 | return osect; | |
3227 | } | |
c906108c SS |
3228 | |
3229 | return NULL; | |
3230 | } | |
3231 | ||
3232 | /* Function: list_overlays_command | |
c378eb4e | 3233 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3234 | |
5d3055ad | 3235 | static void |
fba45db2 | 3236 | list_overlays_command (char *args, int from_tty) |
c906108c | 3237 | { |
c5aa993b JM |
3238 | int nmapped = 0; |
3239 | struct objfile *objfile; | |
c906108c SS |
3240 | struct obj_section *osect; |
3241 | ||
3242 | if (overlay_debugging) | |
b631e59b KT |
3243 | { |
3244 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3245 | if (section_is_mapped (osect)) |
b631e59b KT |
3246 | { |
3247 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3248 | const char *name; | |
3249 | bfd_vma lma, vma; | |
3250 | int size; | |
3251 | ||
3252 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3253 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
3254 | size = bfd_get_section_size (osect->the_bfd_section); | |
3255 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
3256 | ||
3257 | printf_filtered ("Section %s, loaded at ", name); | |
3258 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); | |
3259 | puts_filtered (" - "); | |
3260 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); | |
3261 | printf_filtered (", mapped at "); | |
3262 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); | |
3263 | puts_filtered (" - "); | |
3264 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); | |
3265 | puts_filtered ("\n"); | |
3266 | ||
3267 | nmapped++; | |
3268 | } | |
3269 | } | |
c906108c | 3270 | if (nmapped == 0) |
a3f17187 | 3271 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3272 | } |
3273 | ||
3274 | /* Function: map_overlay_command | |
3275 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3276 | ||
5d3055ad | 3277 | static void |
fba45db2 | 3278 | map_overlay_command (char *args, int from_tty) |
c906108c | 3279 | { |
c5aa993b JM |
3280 | struct objfile *objfile, *objfile2; |
3281 | struct obj_section *sec, *sec2; | |
c906108c SS |
3282 | |
3283 | if (!overlay_debugging) | |
3e43a32a MS |
3284 | error (_("Overlay debugging not enabled. Use " |
3285 | "either the 'overlay auto' or\n" | |
3286 | "the 'overlay manual' command.")); | |
c906108c SS |
3287 | |
3288 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3289 | error (_("Argument required: name of an overlay section")); |
c906108c | 3290 | |
c378eb4e | 3291 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3292 | ALL_OBJSECTIONS (objfile, sec) |
3293 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3294 | { |
c378eb4e | 3295 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3296 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3297 | continue; /* not an overlay section */ |
3298 | ||
c378eb4e | 3299 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3300 | sec->ovly_mapped = 1; |
3301 | ||
3302 | /* Next, make a pass and unmap any sections that are | |
3303 | overlapped by this new section: */ | |
3304 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3305 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3306 | { |
3307 | if (info_verbose) | |
a3f17187 | 3308 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3309 | bfd_section_name (objfile->obfd, |
3310 | sec2->the_bfd_section)); | |
c378eb4e | 3311 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3312 | } |
3313 | return; | |
3314 | } | |
8a3fe4f8 | 3315 | error (_("No overlay section called %s"), args); |
c906108c SS |
3316 | } |
3317 | ||
3318 | /* Function: unmap_overlay_command | |
5417f6dc | 3319 | Mark the overlay section as unmapped |
c906108c SS |
3320 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3321 | ||
5d3055ad | 3322 | static void |
fba45db2 | 3323 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3324 | { |
c5aa993b | 3325 | struct objfile *objfile; |
7a270e0c | 3326 | struct obj_section *sec = NULL; |
c906108c SS |
3327 | |
3328 | if (!overlay_debugging) | |
3e43a32a MS |
3329 | error (_("Overlay debugging not enabled. " |
3330 | "Use either the 'overlay auto' or\n" | |
3331 | "the 'overlay manual' command.")); | |
c906108c SS |
3332 | |
3333 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3334 | error (_("Argument required: name of an overlay section")); |
c906108c | 3335 | |
c378eb4e | 3336 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3337 | ALL_OBJSECTIONS (objfile, sec) |
3338 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3339 | { |
3340 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3341 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3342 | sec->ovly_mapped = 0; |
3343 | return; | |
3344 | } | |
8a3fe4f8 | 3345 | error (_("No overlay section called %s"), args); |
c906108c SS |
3346 | } |
3347 | ||
3348 | /* Function: overlay_auto_command | |
3349 | A utility command to turn on overlay debugging. | |
c378eb4e | 3350 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3351 | |
3352 | static void | |
fba45db2 | 3353 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3354 | { |
d874f1e2 | 3355 | overlay_debugging = ovly_auto; |
1900040c | 3356 | enable_overlay_breakpoints (); |
c906108c | 3357 | if (info_verbose) |
a3f17187 | 3358 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3359 | } |
3360 | ||
3361 | /* Function: overlay_manual_command | |
3362 | A utility command to turn on overlay debugging. | |
c378eb4e | 3363 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3364 | |
3365 | static void | |
fba45db2 | 3366 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3367 | { |
d874f1e2 | 3368 | overlay_debugging = ovly_on; |
1900040c | 3369 | disable_overlay_breakpoints (); |
c906108c | 3370 | if (info_verbose) |
a3f17187 | 3371 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3372 | } |
3373 | ||
3374 | /* Function: overlay_off_command | |
3375 | A utility command to turn on overlay debugging. | |
c378eb4e | 3376 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3377 | |
3378 | static void | |
fba45db2 | 3379 | overlay_off_command (char *args, int from_tty) |
c906108c | 3380 | { |
d874f1e2 | 3381 | overlay_debugging = ovly_off; |
1900040c | 3382 | disable_overlay_breakpoints (); |
c906108c | 3383 | if (info_verbose) |
a3f17187 | 3384 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3385 | } |
3386 | ||
3387 | static void | |
fba45db2 | 3388 | overlay_load_command (char *args, int from_tty) |
c906108c | 3389 | { |
e17c207e UW |
3390 | struct gdbarch *gdbarch = get_current_arch (); |
3391 | ||
3392 | if (gdbarch_overlay_update_p (gdbarch)) | |
3393 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3394 | else |
8a3fe4f8 | 3395 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3396 | } |
3397 | ||
3398 | /* Function: overlay_command | |
c378eb4e | 3399 | A place-holder for a mis-typed command. */ |
c906108c | 3400 | |
c378eb4e | 3401 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3402 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3403 | |
3404 | static void | |
fba45db2 | 3405 | overlay_command (char *args, int from_tty) |
c906108c | 3406 | { |
c5aa993b | 3407 | printf_unfiltered |
c906108c | 3408 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
635c7e8a | 3409 | help_list (overlaylist, "overlay ", all_commands, gdb_stdout); |
c906108c SS |
3410 | } |
3411 | ||
c906108c SS |
3412 | /* Target Overlays for the "Simplest" overlay manager: |
3413 | ||
5417f6dc RM |
3414 | This is GDB's default target overlay layer. It works with the |
3415 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3416 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3417 | so targets that use a different runtime overlay manager can |
c906108c SS |
3418 | substitute their own overlay_update function and take over the |
3419 | function pointer. | |
3420 | ||
3421 | The overlay_update function pokes around in the target's data structures | |
3422 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3423 | this information. | |
3424 | ||
3425 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3426 | unsigned _novlys; /# number of overlay sections #/ |
3427 | unsigned _ovly_table[_novlys][4] = { | |
438e1e42 | 3428 | {VMA, OSIZE, LMA, MAPPED}, /# one entry per overlay section #/ |
c5aa993b JM |
3429 | {..., ..., ..., ...}, |
3430 | } | |
3431 | unsigned _novly_regions; /# number of overlay regions #/ | |
3432 | unsigned _ovly_region_table[_novly_regions][3] = { | |
438e1e42 | 3433 | {VMA, OSIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ |
c5aa993b JM |
3434 | {..., ..., ...}, |
3435 | } | |
c906108c SS |
3436 | These functions will attempt to update GDB's mappedness state in the |
3437 | symbol section table, based on the target's mappedness state. | |
3438 | ||
3439 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3440 | attempt to detect when the cached copy is invalidated. The main | |
3441 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3442 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3443 | the target (whenever possible). */ |
c906108c SS |
3444 | |
3445 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3446 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3447 | static unsigned cache_novlys = 0; |
c906108c | 3448 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3449 | enum ovly_index |
3450 | { | |
438e1e42 | 3451 | VMA, OSIZE, LMA, MAPPED |
c5aa993b | 3452 | }; |
c906108c | 3453 | |
c378eb4e | 3454 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3455 | |
c906108c | 3456 | static void |
fba45db2 | 3457 | simple_free_overlay_table (void) |
c906108c SS |
3458 | { |
3459 | if (cache_ovly_table) | |
b8c9b27d | 3460 | xfree (cache_ovly_table); |
c5aa993b | 3461 | cache_novlys = 0; |
c906108c SS |
3462 | cache_ovly_table = NULL; |
3463 | cache_ovly_table_base = 0; | |
3464 | } | |
3465 | ||
9216df95 | 3466 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3467 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3468 | |
c906108c | 3469 | static void |
9216df95 | 3470 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3471 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3472 | { |
c378eb4e | 3473 | /* FIXME (alloca): Not safe if array is very large. */ |
224c3ddb | 3474 | gdb_byte *buf = (gdb_byte *) alloca (len * size); |
c5aa993b | 3475 | int i; |
c906108c | 3476 | |
9216df95 | 3477 | read_memory (memaddr, buf, len * size); |
c906108c | 3478 | for (i = 0; i < len; i++) |
e17a4113 | 3479 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3480 | } |
3481 | ||
3482 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3483 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3484 | |
c5aa993b | 3485 | static int |
fba45db2 | 3486 | simple_read_overlay_table (void) |
c906108c | 3487 | { |
3b7344d5 | 3488 | struct bound_minimal_symbol novlys_msym; |
7c7b6655 | 3489 | struct bound_minimal_symbol ovly_table_msym; |
9216df95 UW |
3490 | struct gdbarch *gdbarch; |
3491 | int word_size; | |
e17a4113 | 3492 | enum bfd_endian byte_order; |
c906108c SS |
3493 | |
3494 | simple_free_overlay_table (); | |
9b27852e | 3495 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
3b7344d5 | 3496 | if (! novlys_msym.minsym) |
c906108c | 3497 | { |
8a3fe4f8 | 3498 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3499 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3500 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3501 | return 0; |
c906108c | 3502 | } |
0d43edd1 | 3503 | |
7c7b6655 TT |
3504 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3505 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3506 | { |
8a3fe4f8 | 3507 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3508 | "`_ovly_table' array\n" |
8a3fe4f8 | 3509 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3510 | return 0; |
3511 | } | |
3512 | ||
7c7b6655 | 3513 | gdbarch = get_objfile_arch (ovly_table_msym.objfile); |
9216df95 | 3514 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3515 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3516 | |
77e371c0 TT |
3517 | cache_novlys = read_memory_integer (BMSYMBOL_VALUE_ADDRESS (novlys_msym), |
3518 | 4, byte_order); | |
0d43edd1 | 3519 | cache_ovly_table |
224c3ddb | 3520 | = (unsigned int (*)[4]) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); |
77e371c0 | 3521 | cache_ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym); |
0d43edd1 | 3522 | read_target_long_array (cache_ovly_table_base, |
777ea8f1 | 3523 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3524 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3525 | |
c5aa993b | 3526 | return 1; /* SUCCESS */ |
c906108c SS |
3527 | } |
3528 | ||
5417f6dc | 3529 | /* Function: simple_overlay_update_1 |
c906108c SS |
3530 | A helper function for simple_overlay_update. Assuming a cached copy |
3531 | of _ovly_table exists, look through it to find an entry whose vma, | |
3532 | lma and size match those of OSECT. Re-read the entry and make sure | |
3533 | it still matches OSECT (else the table may no longer be valid). | |
3534 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3535 | success, 0 for failure. */ | |
3536 | ||
3537 | static int | |
fba45db2 | 3538 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c | 3539 | { |
764c99c1 | 3540 | int i; |
fbd35540 MS |
3541 | bfd *obfd = osect->objfile->obfd; |
3542 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3543 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3544 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3545 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3546 | |
c906108c | 3547 | for (i = 0; i < cache_novlys; i++) |
fbd35540 | 3548 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3549 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c | 3550 | { |
9216df95 UW |
3551 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3552 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3553 | 4, word_size, byte_order); |
fbd35540 | 3554 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3555 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c SS |
3556 | { |
3557 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3558 | return 1; | |
3559 | } | |
c378eb4e | 3560 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3561 | return 0; |
3562 | } | |
3563 | return 0; | |
3564 | } | |
3565 | ||
3566 | /* Function: simple_overlay_update | |
5417f6dc RM |
3567 | If OSECT is NULL, then update all sections' mapped state |
3568 | (after re-reading the entire target _ovly_table). | |
3569 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3570 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3571 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3572 | re-read the entire cache, and go ahead and update all sections. */ |
3573 | ||
1c772458 | 3574 | void |
fba45db2 | 3575 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3576 | { |
c5aa993b | 3577 | struct objfile *objfile; |
c906108c | 3578 | |
c378eb4e | 3579 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3580 | if (osect) |
c378eb4e | 3581 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3582 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3583 | { |
3584 | /* Does its cached location match what's currently in the | |
3585 | symtab? */ | |
3b7344d5 | 3586 | struct bound_minimal_symbol minsym |
9cc89665 MS |
3587 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
3588 | ||
3b7344d5 | 3589 | if (minsym.minsym == NULL) |
9cc89665 MS |
3590 | error (_("Error reading inferior's overlay table: couldn't " |
3591 | "find `_ovly_table' array\n" | |
3592 | "in inferior. Use `overlay manual' mode.")); | |
3593 | ||
77e371c0 | 3594 | if (cache_ovly_table_base == BMSYMBOL_VALUE_ADDRESS (minsym)) |
9cc89665 MS |
3595 | /* Then go ahead and try to look up this single section in |
3596 | the cache. */ | |
3597 | if (simple_overlay_update_1 (osect)) | |
3598 | /* Found it! We're done. */ | |
3599 | return; | |
3600 | } | |
c906108c SS |
3601 | |
3602 | /* Cached table no good: need to read the entire table anew. | |
3603 | Or else we want all the sections, in which case it's actually | |
3604 | more efficient to read the whole table in one block anyway. */ | |
3605 | ||
0d43edd1 JB |
3606 | if (! simple_read_overlay_table ()) |
3607 | return; | |
3608 | ||
c378eb4e | 3609 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3610 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3611 | if (section_is_overlay (osect)) |
c5aa993b | 3612 | { |
764c99c1 | 3613 | int i; |
fbd35540 MS |
3614 | bfd *obfd = osect->objfile->obfd; |
3615 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3616 | |
c5aa993b | 3617 | for (i = 0; i < cache_novlys; i++) |
fbd35540 | 3618 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3619 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c378eb4e | 3620 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3621 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3622 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3623 | } |
3624 | } | |
c906108c SS |
3625 | } |
3626 | ||
086df311 DJ |
3627 | /* Set the output sections and output offsets for section SECTP in |
3628 | ABFD. The relocation code in BFD will read these offsets, so we | |
3629 | need to be sure they're initialized. We map each section to itself, | |
3630 | with no offset; this means that SECTP->vma will be honored. */ | |
3631 | ||
3632 | static void | |
3633 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3634 | { | |
3635 | sectp->output_section = sectp; | |
3636 | sectp->output_offset = 0; | |
3637 | } | |
3638 | ||
ac8035ab TG |
3639 | /* Default implementation for sym_relocate. */ |
3640 | ||
ac8035ab TG |
3641 | bfd_byte * |
3642 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3643 | bfd_byte *buf) | |
3644 | { | |
3019eac3 DE |
3645 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3646 | DWO file. */ | |
3647 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3648 | |
3649 | /* We're only interested in sections with relocation | |
3650 | information. */ | |
3651 | if ((sectp->flags & SEC_RELOC) == 0) | |
3652 | return NULL; | |
3653 | ||
3654 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3655 | all sections begin at 0. */ | |
3656 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3657 | ||
3658 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3659 | } | |
3660 | ||
086df311 DJ |
3661 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3662 | contents are stored in BUF if it is non-NULL, or returned in a | |
3663 | malloc'd buffer otherwise. | |
3664 | ||
3665 | For some platforms and debug info formats, shared libraries contain | |
3666 | relocations against the debug sections (particularly for DWARF-2; | |
3667 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3668 | the version of the linker in use). Also, ELF object files naturally | |
3669 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3670 | the relocations in order to get the locations of symbols correct. |
3671 | Another example that may require relocation processing, is the | |
3672 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3673 | debug section. */ | |
086df311 DJ |
3674 | |
3675 | bfd_byte * | |
ac8035ab TG |
3676 | symfile_relocate_debug_section (struct objfile *objfile, |
3677 | asection *sectp, bfd_byte *buf) | |
086df311 | 3678 | { |
ac8035ab | 3679 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3680 | |
ac8035ab | 3681 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3682 | } |
c906108c | 3683 | |
31d99776 DJ |
3684 | struct symfile_segment_data * |
3685 | get_symfile_segment_data (bfd *abfd) | |
3686 | { | |
00b5771c | 3687 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3688 | |
3689 | if (sf == NULL) | |
3690 | return NULL; | |
3691 | ||
3692 | return sf->sym_segments (abfd); | |
3693 | } | |
3694 | ||
3695 | void | |
3696 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3697 | { | |
3698 | xfree (data->segment_bases); | |
3699 | xfree (data->segment_sizes); | |
3700 | xfree (data->segment_info); | |
3701 | xfree (data); | |
3702 | } | |
3703 | ||
28c32713 JB |
3704 | /* Given: |
3705 | - DATA, containing segment addresses from the object file ABFD, and | |
3706 | the mapping from ABFD's sections onto the segments that own them, | |
3707 | and | |
3708 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3709 | segment addresses reported by the target, | |
3710 | store the appropriate offsets for each section in OFFSETS. | |
3711 | ||
3712 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3713 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3714 | ||
8d385431 DJ |
3715 | If there are more entries, then ignore the extra. The target may |
3716 | not be able to distinguish between an empty data segment and a | |
3717 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3718 | |
31d99776 | 3719 | int |
3189cb12 DE |
3720 | symfile_map_offsets_to_segments (bfd *abfd, |
3721 | const struct symfile_segment_data *data, | |
31d99776 DJ |
3722 | struct section_offsets *offsets, |
3723 | int num_segment_bases, | |
3724 | const CORE_ADDR *segment_bases) | |
3725 | { | |
3726 | int i; | |
3727 | asection *sect; | |
3728 | ||
28c32713 JB |
3729 | /* It doesn't make sense to call this function unless you have some |
3730 | segment base addresses. */ | |
202b96c1 | 3731 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3732 | |
31d99776 DJ |
3733 | /* If we do not have segment mappings for the object file, we |
3734 | can not relocate it by segments. */ | |
3735 | gdb_assert (data != NULL); | |
3736 | gdb_assert (data->num_segments > 0); | |
3737 | ||
31d99776 DJ |
3738 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3739 | { | |
31d99776 DJ |
3740 | int which = data->segment_info[i]; |
3741 | ||
28c32713 JB |
3742 | gdb_assert (0 <= which && which <= data->num_segments); |
3743 | ||
3744 | /* Don't bother computing offsets for sections that aren't | |
3745 | loaded as part of any segment. */ | |
3746 | if (! which) | |
3747 | continue; | |
3748 | ||
3749 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3750 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3751 | if (which > num_segment_bases) |
28c32713 | 3752 | which = num_segment_bases; |
31d99776 | 3753 | |
28c32713 JB |
3754 | offsets->offsets[i] = (segment_bases[which - 1] |
3755 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3756 | } |
3757 | ||
3758 | return 1; | |
3759 | } | |
3760 | ||
3761 | static void | |
3762 | symfile_find_segment_sections (struct objfile *objfile) | |
3763 | { | |
3764 | bfd *abfd = objfile->obfd; | |
3765 | int i; | |
3766 | asection *sect; | |
3767 | struct symfile_segment_data *data; | |
3768 | ||
3769 | data = get_symfile_segment_data (objfile->obfd); | |
3770 | if (data == NULL) | |
3771 | return; | |
3772 | ||
3773 | if (data->num_segments != 1 && data->num_segments != 2) | |
3774 | { | |
3775 | free_symfile_segment_data (data); | |
3776 | return; | |
3777 | } | |
3778 | ||
3779 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3780 | { | |
31d99776 DJ |
3781 | int which = data->segment_info[i]; |
3782 | ||
3783 | if (which == 1) | |
3784 | { | |
3785 | if (objfile->sect_index_text == -1) | |
3786 | objfile->sect_index_text = sect->index; | |
3787 | ||
3788 | if (objfile->sect_index_rodata == -1) | |
3789 | objfile->sect_index_rodata = sect->index; | |
3790 | } | |
3791 | else if (which == 2) | |
3792 | { | |
3793 | if (objfile->sect_index_data == -1) | |
3794 | objfile->sect_index_data = sect->index; | |
3795 | ||
3796 | if (objfile->sect_index_bss == -1) | |
3797 | objfile->sect_index_bss = sect->index; | |
3798 | } | |
3799 | } | |
3800 | ||
3801 | free_symfile_segment_data (data); | |
3802 | } | |
3803 | ||
76ad5e1e NB |
3804 | /* Listen for free_objfile events. */ |
3805 | ||
3806 | static void | |
3807 | symfile_free_objfile (struct objfile *objfile) | |
3808 | { | |
c33b2f12 MM |
3809 | /* Remove the target sections owned by this objfile. */ |
3810 | if (objfile != NULL) | |
76ad5e1e NB |
3811 | remove_target_sections ((void *) objfile); |
3812 | } | |
3813 | ||
540c2971 DE |
3814 | /* Wrapper around the quick_symbol_functions expand_symtabs_matching "method". |
3815 | Expand all symtabs that match the specified criteria. | |
3816 | See quick_symbol_functions.expand_symtabs_matching for details. */ | |
3817 | ||
3818 | void | |
14bc53a8 PA |
3819 | expand_symtabs_matching |
3820 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
3821 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3822 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
3823 | enum search_domain kind) | |
540c2971 DE |
3824 | { |
3825 | struct objfile *objfile; | |
3826 | ||
3827 | ALL_OBJFILES (objfile) | |
3828 | { | |
3829 | if (objfile->sf) | |
bb4142cf | 3830 | objfile->sf->qf->expand_symtabs_matching (objfile, file_matcher, |
276d885b | 3831 | symbol_matcher, |
14bc53a8 | 3832 | expansion_notify, kind); |
540c2971 DE |
3833 | } |
3834 | } | |
3835 | ||
3836 | /* Wrapper around the quick_symbol_functions map_symbol_filenames "method". | |
3837 | Map function FUN over every file. | |
3838 | See quick_symbol_functions.map_symbol_filenames for details. */ | |
3839 | ||
3840 | void | |
bb4142cf DE |
3841 | map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
3842 | int need_fullname) | |
540c2971 DE |
3843 | { |
3844 | struct objfile *objfile; | |
3845 | ||
3846 | ALL_OBJFILES (objfile) | |
3847 | { | |
3848 | if (objfile->sf) | |
3849 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data, | |
3850 | need_fullname); | |
3851 | } | |
3852 | } | |
3853 | ||
c906108c | 3854 | void |
fba45db2 | 3855 | _initialize_symfile (void) |
c906108c SS |
3856 | { |
3857 | struct cmd_list_element *c; | |
c5aa993b | 3858 | |
76ad5e1e NB |
3859 | observer_attach_free_objfile (symfile_free_objfile); |
3860 | ||
1a966eab AC |
3861 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3862 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3863 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3864 | to execute."), &cmdlist); |
5ba2abeb | 3865 | set_cmd_completer (c, filename_completer); |
c906108c | 3866 | |
1a966eab | 3867 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3868 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
3e43a32a MS |
3869 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR>\ |
3870 | ...]\nADDR is the starting address of the file's text.\n\ | |
db162d44 EZ |
3871 | The optional arguments are section-name section-address pairs and\n\ |
3872 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3873 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3874 | &cmdlist); |
5ba2abeb | 3875 | set_cmd_completer (c, filename_completer); |
c906108c | 3876 | |
63644780 NB |
3877 | c = add_cmd ("remove-symbol-file", class_files, |
3878 | remove_symbol_file_command, _("\ | |
3879 | Remove a symbol file added via the add-symbol-file command.\n\ | |
3880 | Usage: remove-symbol-file FILENAME\n\ | |
3881 | remove-symbol-file -a ADDRESS\n\ | |
3882 | The file to remove can be identified by its filename or by an address\n\ | |
3883 | that lies within the boundaries of this symbol file in memory."), | |
3884 | &cmdlist); | |
3885 | ||
1a966eab AC |
3886 | c = add_cmd ("load", class_files, load_command, _("\ |
3887 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd | 3888 | for access from GDB.\n\ |
5cf30ebf LM |
3889 | An optional load OFFSET may also be given as a literal address.\n\ |
3890 | When OFFSET is provided, FILE must also be provided. FILE can be provided\n\ | |
3891 | on its own.\n\ | |
3892 | Usage: load [FILE] [OFFSET]"), &cmdlist); | |
5ba2abeb | 3893 | set_cmd_completer (c, filename_completer); |
c906108c | 3894 | |
c5aa993b | 3895 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3896 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3897 | "overlay ", 0, &cmdlist); |
3898 | ||
3899 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3900 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3901 | ||
c5aa993b | 3902 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3903 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3904 | |
c5aa993b | 3905 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3906 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3907 | |
c5aa993b | 3908 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3909 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3910 | |
c5aa993b | 3911 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3912 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3913 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3914 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3915 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3916 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3917 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3918 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3919 | |
3920 | /* Filename extension to source language lookup table: */ | |
26c41df3 AC |
3921 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3922 | &ext_args, _("\ | |
3923 | Set mapping between filename extension and source language."), _("\ | |
3924 | Show mapping between filename extension and source language."), _("\ | |
3925 | Usage: set extension-language .foo bar"), | |
3926 | set_ext_lang_command, | |
920d2a44 | 3927 | show_ext_args, |
26c41df3 | 3928 | &setlist, &showlist); |
c906108c | 3929 | |
c5aa993b | 3930 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3931 | _("All filename extensions associated with a source language.")); |
917317f4 | 3932 | |
525226b5 AC |
3933 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3934 | &debug_file_directory, _("\ | |
24ddea62 JK |
3935 | Set the directories where separate debug symbols are searched for."), _("\ |
3936 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3937 | Separate debug symbols are first searched for in the same\n\ |
3938 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3939 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3940 | each global debug-file-directory component prepended."), |
525226b5 | 3941 | NULL, |
920d2a44 | 3942 | show_debug_file_directory, |
525226b5 | 3943 | &setlist, &showlist); |
770e7fc7 DE |
3944 | |
3945 | add_setshow_enum_cmd ("symbol-loading", no_class, | |
3946 | print_symbol_loading_enums, &print_symbol_loading, | |
3947 | _("\ | |
3948 | Set printing of symbol loading messages."), _("\ | |
3949 | Show printing of symbol loading messages."), _("\ | |
3950 | off == turn all messages off\n\ | |
3951 | brief == print messages for the executable,\n\ | |
3952 | and brief messages for shared libraries\n\ | |
3953 | full == print messages for the executable,\n\ | |
3954 | and messages for each shared library."), | |
3955 | NULL, | |
3956 | NULL, | |
3957 | &setprintlist, &showprintlist); | |
c4dcb155 SM |
3958 | |
3959 | add_setshow_boolean_cmd ("separate-debug-file", no_class, | |
3960 | &separate_debug_file_debug, _("\ | |
3961 | Set printing of separate debug info file search debug."), _("\ | |
3962 | Show printing of separate debug info file search debug."), _("\ | |
3963 | When on, GDB prints the searched locations while looking for separate debug \ | |
3964 | info files."), NULL, NULL, &setdebuglist, &showdebuglist); | |
c906108c | 3965 | } |