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Commit | Line | Data |
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c906108c | 1 | /* GDB routines for manipulating objfiles. |
af5f3db6 | 2 | |
d01e8234 | 3 | Copyright (C) 1992-2025 Free Software Foundation, Inc. |
af5f3db6 | 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 | /* This file contains support routines for creating, manipulating, and | |
0df8b418 | 23 | destroying objfile structures. */ |
c906108c | 24 | |
ef0f16cc | 25 | #include "bfd.h" |
c906108c SS |
26 | #include "symtab.h" |
27 | #include "symfile.h" | |
28 | #include "objfiles.h" | |
c906108c | 29 | #include "target.h" |
9bdcbae7 DJ |
30 | #include "expression.h" |
31 | #include "parser-defs.h" | |
32 | ||
c906108c | 33 | #include <sys/types.h> |
53ce3c39 | 34 | #include <sys/stat.h> |
c906108c | 35 | #include <fcntl.h> |
bf31fd38 | 36 | #include "gdbsupport/gdb_obstack.h" |
c906108c | 37 | |
7a292a7a | 38 | #include "breakpoint.h" |
fe898f56 | 39 | #include "block.h" |
de4f826b | 40 | #include "dictionary.h" |
cb5d864f | 41 | #include "source.h" |
801e3a5b | 42 | #include "addrmap.h" |
5e2b427d | 43 | #include "arch-utils.h" |
30510692 | 44 | #include "exec.h" |
76727919 | 45 | #include "observable.h" |
6fbf07cd | 46 | #include "complaints.h" |
cbb099e8 | 47 | #include "gdb_bfd.h" |
afedecd3 | 48 | #include "btrace.h" |
268a13a5 | 49 | #include "gdbsupport/pathstuff.h" |
7a292a7a | 50 | |
d0801dd8 | 51 | #include <algorithm> |
cfe826d4 | 52 | |
c906108c | 53 | /* Externally visible variables that are owned by this module. |
0df8b418 | 54 | See declarations in objfile.h for more info. */ |
c906108c | 55 | |
6c95b8df PA |
56 | struct objfile_pspace_info |
57 | { | |
f6aa7436 TT |
58 | objfile_pspace_info () = default; |
59 | ~objfile_pspace_info (); | |
60 | ||
61 | struct obj_section **sections = nullptr; | |
62 | int num_sections = 0; | |
607ece04 GB |
63 | |
64 | /* Nonzero if object files have been added since the section map | |
65 | was last updated. */ | |
f6aa7436 | 66 | int new_objfiles_available = 0; |
607ece04 GB |
67 | |
68 | /* Nonzero if the section map MUST be updated before use. */ | |
f6aa7436 | 69 | int section_map_dirty = 0; |
607ece04 GB |
70 | |
71 | /* Nonzero if section map updates should be inhibited if possible. */ | |
f6aa7436 | 72 | int inhibit_updates = 0; |
6c95b8df PA |
73 | }; |
74 | ||
75 | /* Per-program-space data key. */ | |
08b8a139 | 76 | static const registry<program_space>::key<objfile_pspace_info> |
f6aa7436 | 77 | objfiles_pspace_data; |
6c95b8df | 78 | |
f6aa7436 | 79 | objfile_pspace_info::~objfile_pspace_info () |
6c95b8df | 80 | { |
f6aa7436 | 81 | xfree (sections); |
6c95b8df PA |
82 | } |
83 | ||
84 | /* Get the current svr4 data. If none is found yet, add it now. This | |
85 | function always returns a valid object. */ | |
86 | ||
87 | static struct objfile_pspace_info * | |
88 | get_objfile_pspace_data (struct program_space *pspace) | |
89 | { | |
90 | struct objfile_pspace_info *info; | |
91 | ||
f6aa7436 | 92 | info = objfiles_pspace_data.get (pspace); |
6c95b8df | 93 | if (info == NULL) |
f6aa7436 | 94 | info = objfiles_pspace_data.emplace (pspace); |
6c95b8df PA |
95 | |
96 | return info; | |
97 | } | |
98 | ||
706e3705 TT |
99 | \f |
100 | ||
101 | /* Per-BFD data key. */ | |
102 | ||
08b8a139 | 103 | static const registry<bfd>::key<objfile_per_bfd_storage> objfiles_bfd_data; |
706e3705 | 104 | |
d6797f46 TT |
105 | objfile_per_bfd_storage::~objfile_per_bfd_storage () |
106 | { | |
d6797f46 TT |
107 | } |
108 | ||
706e3705 TT |
109 | /* Create the per-BFD storage object for OBJFILE. If ABFD is not |
110 | NULL, and it already has a per-BFD storage object, use that. | |
9161c89a | 111 | Otherwise, allocate a new per-BFD storage object. */ |
706e3705 | 112 | |
88c4cce8 TT |
113 | void |
114 | set_objfile_per_bfd (struct objfile *objfile) | |
706e3705 | 115 | { |
88c4cce8 | 116 | bfd *abfd = objfile->obfd.get (); |
706e3705 TT |
117 | struct objfile_per_bfd_storage *storage = NULL; |
118 | ||
119 | if (abfd != NULL) | |
f6aa7436 | 120 | storage = objfiles_bfd_data.get (abfd); |
706e3705 TT |
121 | |
122 | if (storage == NULL) | |
123 | { | |
0072c873 | 124 | storage = new objfile_per_bfd_storage (abfd); |
1da77581 TT |
125 | /* If the object requires gdb to do relocations, we simply fall |
126 | back to not sharing data across users. These cases are rare | |
127 | enough that this seems reasonable. */ | |
128 | if (abfd != NULL && !gdb_bfd_requires_relocations (abfd)) | |
f6aa7436 | 129 | objfiles_bfd_data.set (abfd, storage); |
88c4cce8 TT |
130 | else |
131 | objfile->per_bfd_storage.reset (storage); | |
706e3705 | 132 | |
1da77581 TT |
133 | /* Look up the gdbarch associated with the BFD. */ |
134 | if (abfd != NULL) | |
135 | storage->gdbarch = gdbarch_from_bfd (abfd); | |
706e3705 TT |
136 | } |
137 | ||
88c4cce8 | 138 | objfile->per_bfd = storage; |
706e3705 TT |
139 | } |
140 | ||
3d548a53 TT |
141 | /* Set the objfile's per-BFD notion of the "main" name and |
142 | language. */ | |
143 | ||
144 | void | |
145 | set_objfile_main_name (struct objfile *objfile, | |
146 | const char *name, enum language lang) | |
147 | { | |
148 | if (objfile->per_bfd->name_of_main == NULL | |
149 | || strcmp (objfile->per_bfd->name_of_main, name) != 0) | |
150 | objfile->per_bfd->name_of_main | |
021887d8 | 151 | = obstack_strdup (&objfile->per_bfd->storage_obstack, name); |
3d548a53 TT |
152 | objfile->per_bfd->language_of_main = lang; |
153 | } | |
154 | ||
63e43d3a PMR |
155 | /* Register STATIC_LINK as the static link for BLOCK, which is part of OBJFILE. |
156 | Must not be called more than once for each BLOCK. */ | |
157 | ||
158 | void | |
159 | objfile_register_static_link (struct objfile *objfile, | |
160 | const struct block *block, | |
161 | const struct dynamic_prop *static_link) | |
162 | { | |
9f334198 SM |
163 | /* Enter the mapping and make sure it's the first mapping for this |
164 | block. */ | |
165 | bool inserted = objfile->static_links.emplace (block, static_link).second; | |
166 | gdb_assert (inserted); | |
63e43d3a PMR |
167 | } |
168 | ||
169 | /* Look for a static link for BLOCK, which is part of OBJFILE. Return NULL if | |
170 | none was found. */ | |
171 | ||
172 | const struct dynamic_prop * | |
173 | objfile_lookup_static_link (struct objfile *objfile, | |
174 | const struct block *block) | |
175 | { | |
9f334198 SM |
176 | if (auto iter = objfile->static_links.find (block); |
177 | iter != objfile->static_links.end ()) | |
178 | return iter->second; | |
179 | ||
180 | return nullptr; | |
63e43d3a PMR |
181 | } |
182 | ||
706e3705 TT |
183 | \f |
184 | ||
cb814f2e TT |
185 | /* Build up the section table that the objfile references. The |
186 | objfile contains pointers to the start of the table | |
187 | (objfile->sections) and to the first location after the end of the | |
188 | table (objfile->sections_end). */ | |
96baa820 | 189 | |
65cf3563 | 190 | static void |
cb814f2e | 191 | add_to_objfile_sections (struct bfd *abfd, struct bfd_section *asect, |
65cf3563 TT |
192 | struct objfile *objfile, int force) |
193 | { | |
194 | struct obj_section *section; | |
195 | ||
196 | if (!force) | |
197 | { | |
198 | flagword aflag; | |
199 | ||
fd361982 | 200 | aflag = bfd_section_flags (asect); |
65cf3563 TT |
201 | if (!(aflag & SEC_ALLOC)) |
202 | return; | |
203 | } | |
204 | ||
9ed8433a | 205 | section = &objfile->sections_start[gdb_bfd_section_index (abfd, asect)]; |
65cf3563 TT |
206 | section->objfile = objfile; |
207 | section->the_bfd_section = asect; | |
208 | section->ovly_mapped = 0; | |
209 | } | |
210 | ||
c906108c | 211 | /* Builds a section table for OBJFILE. |
96baa820 | 212 | |
65cf3563 TT |
213 | Note that the OFFSET and OVLY_MAPPED in each table entry are |
214 | initialized to zero. */ | |
c906108c | 215 | |
d82ea6a8 | 216 | void |
fba45db2 | 217 | build_objfile_section_table (struct objfile *objfile) |
c906108c | 218 | { |
98badbfd | 219 | int count = gdb_bfd_count_sections (objfile->obfd.get ()); |
65cf3563 | 220 | |
9ed8433a TT |
221 | objfile->sections_start = OBSTACK_CALLOC (&objfile->objfile_obstack, |
222 | count, | |
223 | struct obj_section); | |
224 | objfile->sections_end = (objfile->sections_start + count); | |
cb814f2e | 225 | for (asection *sect : gdb_bfd_sections (objfile->obfd)) |
98badbfd | 226 | add_to_objfile_sections (objfile->obfd.get (), sect, objfile, 0); |
65cf3563 TT |
227 | |
228 | /* See gdb_bfd_section_index. */ | |
98badbfd TT |
229 | add_to_objfile_sections (objfile->obfd.get (), bfd_com_section_ptr, |
230 | objfile, 1); | |
231 | add_to_objfile_sections (objfile->obfd.get (), bfd_und_section_ptr, | |
232 | objfile, 1); | |
233 | add_to_objfile_sections (objfile->obfd.get (), bfd_abs_section_ptr, | |
234 | objfile, 1); | |
235 | add_to_objfile_sections (objfile->obfd.get (), bfd_ind_section_ptr, | |
236 | objfile, 1); | |
c906108c SS |
237 | } |
238 | ||
9e86da07 TT |
239 | /* Given a pointer to an initialized bfd (ABFD) and some flag bits, |
240 | initialize the new objfile as best we can and link it into the list | |
241 | of all known objfiles. | |
c906108c | 242 | |
24ba069a JK |
243 | NAME should contain original non-canonicalized filename or other |
244 | identifier as entered by user. If there is no better source use | |
245 | bfd_get_filename (ABFD). NAME may be NULL only if ABFD is NULL. | |
246 | NAME content is copied into returned objfile. | |
247 | ||
2df3850c | 248 | The FLAGS word contains various bits (OBJF_*) that can be taken as |
78a4a9b9 | 249 | requests for specific operations. Other bits like OBJF_SHARED are |
0df8b418 | 250 | simply copied through to the new objfile flags member. */ |
c906108c | 251 | |
da877546 SM |
252 | objfile::objfile (gdb_bfd_ref_ptr bfd_, program_space *pspace, |
253 | const char *name, objfile_flags flags_) | |
9e86da07 | 254 | : flags (flags_), |
da877546 | 255 | m_pspace (pspace), |
98badbfd | 256 | obfd (std::move (bfd_)) |
c906108c | 257 | { |
14278e1f | 258 | const char *expanded_name; |
c906108c | 259 | |
7ab2607f | 260 | std::string name_holder; |
24ba069a JK |
261 | if (name == NULL) |
262 | { | |
98badbfd | 263 | gdb_assert (obfd == nullptr); |
40135bb1 | 264 | gdb_assert ((flags & OBJF_NOT_FILENAME) != 0); |
e3e41d58 | 265 | expanded_name = "<<anonymous objfile>>"; |
24ba069a | 266 | } |
5fbae7d1 GB |
267 | else if ((flags & OBJF_NOT_FILENAME) != 0 |
268 | || is_target_filename (name)) | |
e3e41d58 | 269 | expanded_name = name; |
04affae3 | 270 | else |
e3e41d58 TT |
271 | { |
272 | name_holder = gdb_abspath (name); | |
7ab2607f | 273 | expanded_name = name_holder.c_str (); |
e3e41d58 | 274 | } |
021887d8 | 275 | original_name = obstack_strdup (&objfile_obstack, expanded_name); |
04affae3 | 276 | |
d3e81981 DE |
277 | /* Update the per-objfile information that comes from the bfd, ensuring |
278 | that any data that is reference is saved in the per-objfile data | |
279 | region. */ | |
280 | ||
98badbfd | 281 | if (obfd != nullptr) |
c906108c | 282 | { |
a357defd | 283 | mtime = gdb_bfd_get_mtime (obfd.get ()); |
c906108c SS |
284 | |
285 | /* Build section table. */ | |
9e86da07 | 286 | build_objfile_section_table (this); |
c906108c SS |
287 | } |
288 | ||
88c4cce8 | 289 | set_objfile_per_bfd (this); |
c906108c SS |
290 | } |
291 | ||
b7513ebd | 292 | /* See objfiles.h. */ |
9ab9195f | 293 | |
abd0a5fa | 294 | int |
b7513ebd | 295 | entry_point_address_query (program_space *pspace, CORE_ADDR *entry_p) |
9ab9195f | 296 | { |
b7513ebd | 297 | objfile *objf = pspace->symfile_object_file; |
a42d7dd8 | 298 | if (objf == NULL || !objf->per_bfd->ei.entry_point_p) |
3612b192 DJ |
299 | return 0; |
300 | ||
a42d7dd8 TT |
301 | int idx = objf->per_bfd->ei.the_bfd_section_index; |
302 | *entry_p = objf->per_bfd->ei.entry_point + objf->section_offsets[idx]; | |
3612b192 | 303 | |
abd0a5fa JK |
304 | return 1; |
305 | } | |
306 | ||
d1e4438f | 307 | /* See objfiles.h. */ |
abd0a5fa JK |
308 | |
309 | CORE_ADDR | |
d1e4438f | 310 | entry_point_address (program_space *pspace) |
abd0a5fa JK |
311 | { |
312 | CORE_ADDR retval; | |
313 | ||
d1e4438f | 314 | if (!entry_point_address_query (pspace, &retval)) |
abd0a5fa JK |
315 | error (_("Entry point address is not known.")); |
316 | ||
317 | return retval; | |
9ab9195f | 318 | } |
15831452 | 319 | |
e9ad22ee TT |
320 | separate_debug_iterator & |
321 | separate_debug_iterator::operator++ () | |
15d123c9 | 322 | { |
e9ad22ee TT |
323 | gdb_assert (m_objfile != nullptr); |
324 | ||
15d123c9 TG |
325 | struct objfile *res; |
326 | ||
399f313b | 327 | /* If any, return the first child. */ |
e9ad22ee TT |
328 | res = m_objfile->separate_debug_objfile; |
329 | if (res != nullptr) | |
330 | { | |
331 | m_objfile = res; | |
332 | return *this; | |
333 | } | |
15d123c9 | 334 | |
15d123c9 | 335 | /* Common case where there is no separate debug objfile. */ |
e9ad22ee TT |
336 | if (m_objfile == m_parent) |
337 | { | |
338 | m_objfile = nullptr; | |
339 | return *this; | |
340 | } | |
15d123c9 | 341 | |
399f313b TG |
342 | /* Return the brother if any. Note that we don't iterate on brothers of |
343 | the parents. */ | |
e9ad22ee TT |
344 | res = m_objfile->separate_debug_objfile_link; |
345 | if (res != nullptr) | |
346 | { | |
347 | m_objfile = res; | |
348 | return *this; | |
349 | } | |
399f313b | 350 | |
e9ad22ee TT |
351 | for (res = m_objfile->separate_debug_objfile_backlink; |
352 | res != m_parent; | |
15d123c9 TG |
353 | res = res->separate_debug_objfile_backlink) |
354 | { | |
e9ad22ee TT |
355 | gdb_assert (res != nullptr); |
356 | if (res->separate_debug_objfile_link != nullptr) | |
357 | { | |
358 | m_objfile = res->separate_debug_objfile_link; | |
359 | return *this; | |
360 | } | |
15d123c9 | 361 | } |
e9ad22ee TT |
362 | m_objfile = nullptr; |
363 | return *this; | |
15d123c9 | 364 | } |
15831452 | 365 | |
15d123c9 TG |
366 | /* Add OBJFILE as a separate debug objfile of PARENT. */ |
367 | ||
f65fe570 | 368 | static void |
15d123c9 TG |
369 | add_separate_debug_objfile (struct objfile *objfile, struct objfile *parent) |
370 | { | |
371 | gdb_assert (objfile && parent); | |
372 | ||
373 | /* Must not be already in a list. */ | |
374 | gdb_assert (objfile->separate_debug_objfile_backlink == NULL); | |
375 | gdb_assert (objfile->separate_debug_objfile_link == NULL); | |
8a92335b JK |
376 | gdb_assert (objfile->separate_debug_objfile == NULL); |
377 | gdb_assert (parent->separate_debug_objfile_backlink == NULL); | |
378 | gdb_assert (parent->separate_debug_objfile_link == NULL); | |
15d123c9 TG |
379 | |
380 | objfile->separate_debug_objfile_backlink = parent; | |
381 | objfile->separate_debug_objfile_link = parent->separate_debug_objfile; | |
382 | parent->separate_debug_objfile = objfile; | |
15d123c9 TG |
383 | } |
384 | ||
f65fe570 TT |
385 | /* See objfiles.h. */ |
386 | ||
387 | objfile * | |
8991986e SM |
388 | objfile::make (gdb_bfd_ref_ptr bfd_, program_space *pspace, const char *name_, |
389 | objfile_flags flags_, objfile *parent) | |
f65fe570 | 390 | { |
137f38de | 391 | objfile *result = new objfile (std::move (bfd_), pspace, name_, flags_); |
f65fe570 TT |
392 | if (parent != nullptr) |
393 | add_separate_debug_objfile (result, parent); | |
7cac64af | 394 | |
137f38de | 395 | pspace->add_objfile (std::unique_ptr<objfile> (result), parent); |
7cac64af TT |
396 | |
397 | /* Rebuild section map next time we need it. */ | |
137f38de | 398 | get_objfile_pspace_data (pspace)->new_objfiles_available = 1; |
7cac64af | 399 | |
f65fe570 TT |
400 | return result; |
401 | } | |
402 | ||
268e4f09 TT |
403 | /* See objfiles.h. */ |
404 | ||
405 | void | |
406 | objfile::unlink () | |
407 | { | |
93016848 | 408 | this->pspace ()->remove_objfile (this); |
268e4f09 TT |
409 | } |
410 | ||
15d123c9 TG |
411 | /* Free all separate debug objfile of OBJFILE, but don't free OBJFILE |
412 | itself. */ | |
413 | ||
414 | void | |
415 | free_objfile_separate_debug (struct objfile *objfile) | |
416 | { | |
417 | struct objfile *child; | |
418 | ||
419 | for (child = objfile->separate_debug_objfile; child;) | |
420 | { | |
421 | struct objfile *next_child = child->separate_debug_objfile_link; | |
268e4f09 | 422 | child->unlink (); |
15d123c9 TG |
423 | child = next_child; |
424 | } | |
425 | } | |
c906108c | 426 | |
7580e917 | 427 | /* Destroy an objfile and all the symtabs and psymtabs under it. */ |
c906108c | 428 | |
9e86da07 | 429 | objfile::~objfile () |
c906108c | 430 | { |
63644780 | 431 | /* First notify observers that this objfile is about to be freed. */ |
76727919 | 432 | gdb::observers::free_objfile.notify (this); |
63644780 | 433 | |
15d123c9 | 434 | /* Free all separate debug objfiles. */ |
9e86da07 | 435 | free_objfile_separate_debug (this); |
15d123c9 | 436 | |
9e86da07 | 437 | if (separate_debug_objfile_backlink) |
5b5d99cf JB |
438 | { |
439 | /* We freed the separate debug file, make sure the base objfile | |
440 | doesn't reference it. */ | |
15d123c9 TG |
441 | struct objfile *child; |
442 | ||
9e86da07 | 443 | child = separate_debug_objfile_backlink->separate_debug_objfile; |
15d123c9 | 444 | |
9e86da07 | 445 | if (child == this) |
dda83cd7 SM |
446 | { |
447 | /* THIS is the first child. */ | |
448 | separate_debug_objfile_backlink->separate_debug_objfile = | |
449 | separate_debug_objfile_link; | |
450 | } | |
15d123c9 | 451 | else |
dda83cd7 SM |
452 | { |
453 | /* Find THIS in the list. */ | |
454 | while (1) | |
455 | { | |
456 | if (child->separate_debug_objfile_link == this) | |
457 | { | |
458 | child->separate_debug_objfile_link = | |
459 | separate_debug_objfile_link; | |
460 | break; | |
461 | } | |
462 | child = child->separate_debug_objfile_link; | |
463 | gdb_assert (child); | |
464 | } | |
465 | } | |
5b5d99cf | 466 | } |
9e86da07 | 467 | |
ae5a43e0 DJ |
468 | /* Remove any references to this objfile in the global value |
469 | lists. */ | |
9e86da07 | 470 | preserve_values (this); |
ae5a43e0 | 471 | |
9f743ef6 JK |
472 | /* It still may reference data modules have associated with the objfile and |
473 | the symbol file data. */ | |
21f6be77 | 474 | forget_cached_source_info (); |
4122e647 TT |
475 | for (compunit_symtab *cu : compunits ()) |
476 | cu->finalize (); | |
9f743ef6 | 477 | |
9e86da07 TT |
478 | breakpoint_free_objfile (this); |
479 | btrace_free_objfile (this); | |
2f202fde | 480 | |
c906108c SS |
481 | /* First do any symbol file specific actions required when we are |
482 | finished with a particular symbol file. Note that if the objfile | |
483 | is using reusable symbol information (via mmalloc) then each of | |
484 | these routines is responsible for doing the correct thing, either | |
485 | freeing things which are valid only during this particular gdb | |
0df8b418 | 486 | execution, or leaving them to be reused during the next one. */ |
c906108c | 487 | |
9e86da07 TT |
488 | if (sf != NULL) |
489 | (*sf->sym_finish) (this); | |
c906108c | 490 | |
c906108c SS |
491 | /* Before the symbol table code was redone to make it easier to |
492 | selectively load and remove information particular to a specific | |
493 | linkage unit, gdb used to do these things whenever the monolithic | |
494 | symbol table was blown away. How much still needs to be done | |
495 | is unknown, but we play it safe for now and keep each action until | |
0df8b418 | 496 | it is shown to be no longer needed. */ |
c5aa993b | 497 | |
cb5d864f FF |
498 | /* Not all our callers call clear_symtab_users (objfile_purge_solibs, |
499 | for example), so we need to call this here. */ | |
c906108c SS |
500 | clear_pc_function_cache (); |
501 | ||
cb5d864f | 502 | /* Check to see if the current_source_symtab belongs to this objfile, |
0df8b418 | 503 | and if so, call clear_current_source_symtab_and_line. */ |
5a43f7f0 | 504 | clear_current_source_symtab_and_line (this); |
cb5d864f | 505 | |
6c95b8df | 506 | /* Rebuild section map next time we need it. */ |
5a43f7f0 TV |
507 | auto info = objfiles_pspace_data.get (pspace ()); |
508 | if (info != nullptr) | |
509 | info->section_map_dirty = 1; | |
c906108c SS |
510 | } |
511 | ||
c906108c | 512 | \f |
34eaf542 TT |
513 | /* A helper function for objfile_relocate1 that relocates a single |
514 | symbol. */ | |
515 | ||
516 | static void | |
517 | relocate_one_symbol (struct symbol *sym, struct objfile *objfile, | |
6a053cb1 | 518 | const section_offsets &delta) |
34eaf542 | 519 | { |
34eaf542 TT |
520 | /* The RS6000 code from which this was taken skipped |
521 | any symbols in STRUCT_DOMAIN or UNDEF_DOMAIN. | |
522 | But I'm leaving out that test, on the theory that | |
523 | they can't possibly pass the tests below. */ | |
66d7f48f SM |
524 | if ((sym->aclass () == LOC_LABEL |
525 | || sym->aclass () == LOC_STATIC) | |
a52d653e | 526 | && sym->section_index () >= 0) |
4aeddc50 SM |
527 | sym->set_value_address (sym->value_address () |
528 | + delta[sym->section_index ()]); | |
34eaf542 TT |
529 | } |
530 | ||
c906108c | 531 | /* Relocate OBJFILE to NEW_OFFSETS. There should be OBJFILE->NUM_SECTIONS |
b260e109 JK |
532 | entries in new_offsets. SEPARATE_DEBUG_OBJFILE is not touched here. |
533 | Return non-zero iff any change happened. */ | |
567995e1 | 534 | |
b260e109 | 535 | static int |
5cc80db3 | 536 | objfile_relocate1 (struct objfile *objfile, |
6a053cb1 | 537 | const section_offsets &new_offsets) |
c906108c | 538 | { |
6a053cb1 | 539 | section_offsets delta (objfile->section_offsets.size ()); |
c906108c | 540 | |
5cc80db3 MS |
541 | int something_changed = 0; |
542 | ||
6a053cb1 | 543 | for (int i = 0; i < objfile->section_offsets.size (); ++i) |
5cc80db3 | 544 | { |
6a053cb1 TT |
545 | delta[i] = new_offsets[i] - objfile->section_offsets[i]; |
546 | if (delta[i] != 0) | |
5cc80db3 MS |
547 | something_changed = 1; |
548 | } | |
549 | if (!something_changed) | |
550 | return 0; | |
c906108c SS |
551 | |
552 | /* OK, get all the symtabs. */ | |
82c5090c TT |
553 | for (compunit_symtab *cust : objfile->compunits ()) |
554 | { | |
555 | struct blockvector *bv = cust->blockvector (); | |
556 | int block_line_section = SECT_OFF_TEXT (objfile); | |
c906108c | 557 | |
82c5090c TT |
558 | if (bv->map () != nullptr) |
559 | bv->map ()->relocate (delta[block_line_section]); | |
34eaf542 | 560 | |
82c5090c TT |
561 | for (block *b : bv->blocks ()) |
562 | { | |
82c5090c TT |
563 | b->set_start (b->start () + delta[block_line_section]); |
564 | b->set_end (b->end () + delta[block_line_section]); | |
5cc80db3 | 565 | |
82c5090c TT |
566 | for (blockrange &r : b->ranges ()) |
567 | { | |
568 | r.set_start (r.start () + delta[block_line_section]); | |
569 | r.set_end (r.end () + delta[block_line_section]); | |
570 | } | |
571 | ||
572 | /* We only want to iterate over the local symbols, not any | |
573 | symbols in included symtabs. */ | |
8e8d48f9 TT |
574 | for (struct symbol *sym : b->multidict_symbols ()) |
575 | relocate_one_symbol (sym, objfile, delta); | |
82c5090c TT |
576 | } |
577 | } | |
578 | ||
579 | /* Relocate isolated symbols. */ | |
580 | for (symbol *iter = objfile->template_symbols; iter; iter = iter->hash_next) | |
581 | relocate_one_symbol (iter, objfile, delta); | |
582 | ||
583 | for (int i = 0; i < objfile->section_offsets.size (); ++i) | |
584 | objfile->section_offsets[i] = new_offsets[i]; | |
f1f2b5f4 PA |
585 | |
586 | /* Rebuild section map next time we need it. */ | |
134a0a10 | 587 | get_objfile_pspace_data (objfile->pspace ())->section_map_dirty = 1; |
f1f2b5f4 | 588 | |
30510692 | 589 | /* Update the table in exec_ops, used to read memory. */ |
5250cbc8 | 590 | for (obj_section *s : objfile->sections ()) |
30510692 | 591 | { |
9ed8433a | 592 | int idx = s - objfile->sections_start; |
30510692 | 593 | |
98badbfd | 594 | exec_set_section_address (bfd_get_filename (objfile->obfd.get ()), idx, |
0c1bcd23 | 595 | s->addr ()); |
30510692 | 596 | } |
b260e109 JK |
597 | |
598 | /* Data changed. */ | |
599 | return 1; | |
567995e1 JK |
600 | } |
601 | ||
602 | /* Relocate OBJFILE to NEW_OFFSETS. There should be OBJFILE->NUM_SECTIONS | |
603 | entries in new_offsets. Process also OBJFILE's SEPARATE_DEBUG_OBJFILEs. | |
604 | ||
605 | The number and ordering of sections does differ between the two objfiles. | |
606 | Only their names match. Also the file offsets will differ (objfile being | |
607 | possibly prelinked but separate_debug_objfile is probably not prelinked) but | |
608 | the in-memory absolute address as specified by NEW_OFFSETS must match both | |
609 | files. */ | |
610 | ||
611 | void | |
3189cb12 | 612 | objfile_relocate (struct objfile *objfile, |
6a053cb1 | 613 | const section_offsets &new_offsets) |
567995e1 | 614 | { |
b260e109 | 615 | int changed = 0; |
567995e1 | 616 | |
b260e109 | 617 | changed |= objfile_relocate1 (objfile, new_offsets); |
567995e1 | 618 | |
bde09ab7 | 619 | for (::objfile *debug_objfile : objfile->separate_debug_objfiles ()) |
567995e1 | 620 | { |
e9ad22ee TT |
621 | if (debug_objfile == objfile) |
622 | continue; | |
623 | ||
37e136b1 TT |
624 | section_addr_info objfile_addrs |
625 | = build_section_addr_info_from_objfile (objfile); | |
567995e1 JK |
626 | |
627 | /* Here OBJFILE_ADDRS contain the correct absolute addresses, the | |
628 | relative ones must be already created according to debug_objfile. */ | |
629 | ||
98badbfd | 630 | addr_info_make_relative (&objfile_addrs, debug_objfile->obfd.get ()); |
567995e1 | 631 | |
6a053cb1 | 632 | gdb_assert (debug_objfile->section_offsets.size () |
98badbfd | 633 | == gdb_bfd_count_sections (debug_objfile->obfd.get ())); |
6a053cb1 TT |
634 | section_offsets new_debug_offsets |
635 | (debug_objfile->section_offsets.size ()); | |
636 | relative_addr_info_to_section_offsets (new_debug_offsets, objfile_addrs); | |
567995e1 | 637 | |
6a053cb1 | 638 | changed |= objfile_relocate1 (debug_objfile, new_debug_offsets); |
567995e1 | 639 | } |
30510692 | 640 | |
0df8b418 | 641 | /* Relocate breakpoints as necessary, after things are relocated. */ |
b260e109 JK |
642 | if (changed) |
643 | breakpoint_re_set (); | |
c906108c | 644 | } |
4141a416 JB |
645 | |
646 | /* Rebase (add to the offsets) OBJFILE by SLIDE. SEPARATE_DEBUG_OBJFILE is | |
647 | not touched here. | |
648 | Return non-zero iff any change happened. */ | |
649 | ||
650 | static int | |
651 | objfile_rebase1 (struct objfile *objfile, CORE_ADDR slide) | |
652 | { | |
6a053cb1 | 653 | section_offsets new_offsets (objfile->section_offsets.size (), slide); |
4141a416 JB |
654 | return objfile_relocate1 (objfile, new_offsets); |
655 | } | |
656 | ||
657 | /* Rebase (add to the offsets) OBJFILE by SLIDE. Process also OBJFILE's | |
658 | SEPARATE_DEBUG_OBJFILEs. */ | |
659 | ||
660 | void | |
661 | objfile_rebase (struct objfile *objfile, CORE_ADDR slide) | |
662 | { | |
4141a416 JB |
663 | int changed = 0; |
664 | ||
bde09ab7 | 665 | for (::objfile *debug_objfile : objfile->separate_debug_objfiles ()) |
4141a416 JB |
666 | changed |= objfile_rebase1 (debug_objfile, slide); |
667 | ||
668 | /* Relocate breakpoints as necessary, after things are relocated. */ | |
669 | if (changed) | |
670 | breakpoint_re_set (); | |
671 | } | |
55333a84 | 672 | |
cc7541ce SM |
673 | /* See objfiles.h. */ |
674 | ||
675 | bool | |
006fb761 | 676 | objfile::has_full_symbols () |
55333a84 | 677 | { |
006fb761 | 678 | return this->compunit_symtabs != nullptr; |
55333a84 DE |
679 | } |
680 | ||
cc7541ce | 681 | /* See objfiles.h. */ |
e361b228 | 682 | |
cc7541ce | 683 | bool |
006fb761 | 684 | objfile::has_symbols () |
e361b228 | 685 | { |
006fb761 SM |
686 | for (::objfile *o : this->separate_debug_objfiles ()) |
687 | if (o->has_partial_symbols () || o->has_full_symbols ()) | |
cc7541ce | 688 | return true; |
e361b228 | 689 | |
cc7541ce SM |
690 | return false; |
691 | } | |
e361b228 | 692 | |
cc7541ce | 693 | /* See objfiles.h. */ |
c906108c | 694 | |
cc7541ce | 695 | bool |
9c067e28 | 696 | have_partial_symbols (program_space *pspace) |
c906108c | 697 | { |
9c067e28 | 698 | for (objfile *ofp : pspace->objfiles ()) |
cc7541ce SM |
699 | if (ofp->has_partial_symbols ()) |
700 | return true; | |
701 | ||
702 | return false; | |
c906108c SS |
703 | } |
704 | ||
cc7541ce | 705 | /* See objfiles.h. */ |
c906108c | 706 | |
cc7541ce | 707 | bool |
9c067e28 | 708 | have_full_symbols (program_space *pspace) |
c906108c | 709 | { |
9c067e28 | 710 | for (objfile *ofp : pspace->objfiles ()) |
006fb761 | 711 | if (ofp->has_full_symbols ()) |
cc7541ce SM |
712 | return true; |
713 | ||
714 | return false; | |
c906108c SS |
715 | } |
716 | ||
717 | ||
98793b83 | 718 | /* See objfiles.h. */ |
0df8b418 | 719 | |
c906108c | 720 | void |
98793b83 | 721 | objfile_purge_solibs (program_space *pspace) |
c906108c | 722 | { |
98793b83 | 723 | for (objfile *objf : pspace->objfiles_safe ()) |
cac85af2 TT |
724 | { |
725 | /* We assume that the solib package has been purged already, or will | |
726 | be soon. */ | |
0df8b418 | 727 | |
cac85af2 | 728 | if (!(objf->flags & OBJF_USERLOADED) && (objf->flags & OBJF_SHARED)) |
268e4f09 | 729 | objf->unlink (); |
cac85af2 | 730 | } |
c906108c SS |
731 | } |
732 | ||
cc7541ce | 733 | /* See objfiles.h. */ |
c906108c | 734 | |
cc7541ce | 735 | bool |
9c067e28 | 736 | have_minimal_symbols (program_space *pspace) |
c906108c | 737 | { |
9c067e28 | 738 | for (objfile *ofp : pspace->objfiles ()) |
cc7541ce SM |
739 | if (ofp->per_bfd->minimal_symbol_count > 0) |
740 | return true; | |
741 | ||
742 | return false; | |
c906108c SS |
743 | } |
744 | ||
a845f5cb PP |
745 | /* Qsort comparison function. */ |
746 | ||
39ef2f62 CB |
747 | static bool |
748 | sort_cmp (const struct obj_section *sect1, const obj_section *sect2) | |
a845f5cb | 749 | { |
0c1bcd23 SM |
750 | const CORE_ADDR sect1_addr = sect1->addr (); |
751 | const CORE_ADDR sect2_addr = sect2->addr (); | |
a845f5cb PP |
752 | |
753 | if (sect1_addr < sect2_addr) | |
39ef2f62 | 754 | return true; |
a845f5cb | 755 | else if (sect1_addr > sect2_addr) |
39ef2f62 | 756 | return false; |
6fbf07cd | 757 | else |
5cc80db3 MS |
758 | { |
759 | /* Sections are at the same address. This could happen if | |
760 | A) we have an objfile and a separate debuginfo. | |
761 | B) we are confused, and have added sections without proper relocation, | |
0df8b418 | 762 | or something like that. */ |
5cc80db3 MS |
763 | |
764 | const struct objfile *const objfile1 = sect1->objfile; | |
765 | const struct objfile *const objfile2 = sect2->objfile; | |
766 | ||
767 | if (objfile1->separate_debug_objfile == objfile2 | |
768 | || objfile2->separate_debug_objfile == objfile1) | |
769 | { | |
770 | /* Case A. The ordering doesn't matter: separate debuginfo files | |
771 | will be filtered out later. */ | |
772 | ||
39ef2f62 | 773 | return false; |
5cc80db3 MS |
774 | } |
775 | ||
776 | /* Case B. Maintain stable sort order, so bugs in GDB are easier to | |
777 | triage. This section could be slow (since we iterate over all | |
39ef2f62 | 778 | objfiles in each call to sort_cmp), but this shouldn't happen |
5cc80db3 MS |
779 | very often (GDB is already in a confused state; one hopes this |
780 | doesn't happen at all). If you discover that significant time is | |
781 | spent in the loops below, do 'set complaints 100' and examine the | |
782 | resulting complaints. */ | |
5cc80db3 MS |
783 | if (objfile1 == objfile2) |
784 | { | |
45f47c3a AB |
785 | /* Both sections came from the same objfile. We are really |
786 | confused. Sort on sequence order of sections within the | |
787 | objfile. The order of checks is important here, if we find a | |
788 | match on SECT2 first then either SECT2 is before SECT1, or, | |
789 | SECT2 == SECT1, in both cases we should return false. The | |
790 | second case shouldn't occur during normal use, but std::sort | |
791 | does check that '!(a < a)' when compiled in debug mode. */ | |
5cc80db3 | 792 | |
5250cbc8 | 793 | for (const obj_section *osect : objfile1->sections ()) |
45f47c3a | 794 | if (osect == sect2) |
39ef2f62 | 795 | return false; |
45f47c3a AB |
796 | else if (osect == sect1) |
797 | return true; | |
5cc80db3 MS |
798 | |
799 | /* We should have found one of the sections before getting here. */ | |
f3574227 | 800 | gdb_assert_not_reached ("section not found"); |
5cc80db3 MS |
801 | } |
802 | else | |
803 | { | |
804 | /* Sort on sequence number of the objfile in the chain. */ | |
805 | ||
2030c079 | 806 | for (objfile *objfile : current_program_space->objfiles ()) |
5cc80db3 | 807 | if (objfile == objfile1) |
39ef2f62 | 808 | return true; |
5cc80db3 | 809 | else if (objfile == objfile2) |
39ef2f62 | 810 | return false; |
5cc80db3 MS |
811 | |
812 | /* We should have found one of the objfiles before getting here. */ | |
f3574227 | 813 | gdb_assert_not_reached ("objfile not found"); |
5cc80db3 MS |
814 | } |
815 | } | |
6fbf07cd PP |
816 | |
817 | /* Unreachable. */ | |
f3574227 | 818 | gdb_assert_not_reached ("unexpected code path"); |
39ef2f62 | 819 | return false; |
a845f5cb PP |
820 | } |
821 | ||
3aad21cf PP |
822 | /* Select "better" obj_section to keep. We prefer the one that came from |
823 | the real object, rather than the one from separate debuginfo. | |
824 | Most of the time the two sections are exactly identical, but with | |
825 | prelinking the .rel.dyn section in the real object may have different | |
826 | size. */ | |
827 | ||
828 | static struct obj_section * | |
829 | preferred_obj_section (struct obj_section *a, struct obj_section *b) | |
830 | { | |
0c1bcd23 | 831 | gdb_assert (a->addr () == b->addr ()); |
3aad21cf PP |
832 | gdb_assert ((a->objfile->separate_debug_objfile == b->objfile) |
833 | || (b->objfile->separate_debug_objfile == a->objfile)); | |
834 | gdb_assert ((a->objfile->separate_debug_objfile_backlink == b->objfile) | |
835 | || (b->objfile->separate_debug_objfile_backlink == a->objfile)); | |
836 | ||
837 | if (a->objfile->separate_debug_objfile != NULL) | |
838 | return a; | |
839 | return b; | |
840 | } | |
841 | ||
6fbf07cd | 842 | /* Return 1 if SECTION should be inserted into the section map. |
625b6eae | 843 | We want to insert only non-overlay non-TLS non-empty sections. */ |
6fbf07cd PP |
844 | |
845 | static int | |
846 | insert_section_p (const struct bfd *abfd, | |
847 | const struct bfd_section *section) | |
848 | { | |
fd361982 | 849 | const bfd_vma lma = bfd_section_lma (section); |
6fbf07cd | 850 | |
fd361982 | 851 | if (overlay_debugging && lma != 0 && lma != bfd_section_vma (section) |
6fbf07cd PP |
852 | && (bfd_get_file_flags (abfd) & BFD_IN_MEMORY) == 0) |
853 | /* This is an overlay section. IN_MEMORY check is needed to avoid | |
854 | discarding sections from the "system supplied DSO" (aka vdso) | |
855 | on some Linux systems (e.g. Fedora 11). */ | |
856 | return 0; | |
fd361982 | 857 | if ((bfd_section_flags (section) & SEC_THREAD_LOCAL) != 0) |
6fbf07cd PP |
858 | /* This is a TLS section. */ |
859 | return 0; | |
625b6eae IL |
860 | if (bfd_section_size (section) == 0) |
861 | { | |
862 | /* This is an empty section. It has no PCs for find_pc_section (), so | |
863 | there is no reason to insert it into the section map. */ | |
864 | return 0; | |
865 | } | |
6fbf07cd PP |
866 | |
867 | return 1; | |
868 | } | |
869 | ||
870 | /* Filter out overlapping sections where one section came from the real | |
871 | objfile, and the other from a separate debuginfo file. | |
872 | Return the size of table after redundant sections have been eliminated. */ | |
873 | ||
874 | static int | |
875 | filter_debuginfo_sections (struct obj_section **map, int map_size) | |
876 | { | |
877 | int i, j; | |
878 | ||
879 | for (i = 0, j = 0; i < map_size - 1; i++) | |
880 | { | |
881 | struct obj_section *const sect1 = map[i]; | |
882 | struct obj_section *const sect2 = map[i + 1]; | |
883 | const struct objfile *const objfile1 = sect1->objfile; | |
884 | const struct objfile *const objfile2 = sect2->objfile; | |
0c1bcd23 SM |
885 | const CORE_ADDR sect1_addr = sect1->addr (); |
886 | const CORE_ADDR sect2_addr = sect2->addr (); | |
6fbf07cd PP |
887 | |
888 | if (sect1_addr == sect2_addr | |
889 | && (objfile1->separate_debug_objfile == objfile2 | |
890 | || objfile2->separate_debug_objfile == objfile1)) | |
891 | { | |
892 | map[j++] = preferred_obj_section (sect1, sect2); | |
893 | ++i; | |
894 | } | |
895 | else | |
896 | map[j++] = sect1; | |
897 | } | |
898 | ||
899 | if (i < map_size) | |
900 | { | |
901 | gdb_assert (i == map_size - 1); | |
902 | map[j++] = map[i]; | |
903 | } | |
904 | ||
905 | /* The map should not have shrunk to less than half the original size. */ | |
906 | gdb_assert (map_size / 2 <= j); | |
907 | ||
908 | return j; | |
909 | } | |
910 | ||
911 | /* Filter out overlapping sections, issuing a warning if any are found. | |
912 | Overlapping sections could really be overlay sections which we didn't | |
913 | classify as such in insert_section_p, or we could be dealing with a | |
914 | corrupt binary. */ | |
915 | ||
916 | static int | |
917 | filter_overlapping_sections (struct obj_section **map, int map_size) | |
918 | { | |
919 | int i, j; | |
920 | ||
921 | for (i = 0, j = 0; i < map_size - 1; ) | |
922 | { | |
923 | int k; | |
924 | ||
925 | map[j++] = map[i]; | |
926 | for (k = i + 1; k < map_size; k++) | |
927 | { | |
928 | struct obj_section *const sect1 = map[i]; | |
929 | struct obj_section *const sect2 = map[k]; | |
0c1bcd23 SM |
930 | const CORE_ADDR sect1_addr = sect1->addr (); |
931 | const CORE_ADDR sect2_addr = sect2->addr (); | |
932 | const CORE_ADDR sect1_endaddr = sect1->endaddr (); | |
6fbf07cd PP |
933 | |
934 | gdb_assert (sect1_addr <= sect2_addr); | |
935 | ||
936 | if (sect1_endaddr <= sect2_addr) | |
937 | break; | |
938 | else | |
939 | { | |
940 | /* We have an overlap. Report it. */ | |
941 | ||
942 | struct objfile *const objf1 = sect1->objfile; | |
943 | struct objfile *const objf2 = sect2->objfile; | |
944 | ||
6fbf07cd PP |
945 | const struct bfd_section *const bfds1 = sect1->the_bfd_section; |
946 | const struct bfd_section *const bfds2 = sect2->the_bfd_section; | |
947 | ||
0c1bcd23 | 948 | const CORE_ADDR sect2_endaddr = sect2->endaddr (); |
6fbf07cd | 949 | |
08feed99 | 950 | struct gdbarch *const gdbarch = objf1->arch (); |
6fbf07cd | 951 | |
b98664d3 | 952 | complaint (_("unexpected overlap between:\n" |
6fbf07cd PP |
953 | " (A) section `%s' from `%s' [%s, %s)\n" |
954 | " (B) section `%s' from `%s' [%s, %s).\n" | |
955 | "Will ignore section B"), | |
fd361982 | 956 | bfd_section_name (bfds1), objfile_name (objf1), |
6fbf07cd PP |
957 | paddress (gdbarch, sect1_addr), |
958 | paddress (gdbarch, sect1_endaddr), | |
fd361982 | 959 | bfd_section_name (bfds2), objfile_name (objf2), |
6fbf07cd PP |
960 | paddress (gdbarch, sect2_addr), |
961 | paddress (gdbarch, sect2_endaddr)); | |
962 | } | |
963 | } | |
964 | i = k; | |
965 | } | |
966 | ||
967 | if (i < map_size) | |
968 | { | |
969 | gdb_assert (i == map_size - 1); | |
970 | map[j++] = map[i]; | |
971 | } | |
972 | ||
973 | return j; | |
974 | } | |
975 | ||
976 | ||
977 | /* Update PMAP, PMAP_SIZE with sections from all objfiles, excluding any | |
978 | TLS, overlay and overlapping sections. */ | |
a845f5cb PP |
979 | |
980 | static void | |
6c95b8df PA |
981 | update_section_map (struct program_space *pspace, |
982 | struct obj_section ***pmap, int *pmap_size) | |
a845f5cb | 983 | { |
607ece04 | 984 | struct objfile_pspace_info *pspace_info; |
6fbf07cd | 985 | int alloc_size, map_size, i; |
5250cbc8 | 986 | struct obj_section **map; |
a845f5cb | 987 | |
607ece04 GB |
988 | pspace_info = get_objfile_pspace_data (pspace); |
989 | gdb_assert (pspace_info->section_map_dirty != 0 | |
990 | || pspace_info->new_objfiles_available != 0); | |
a845f5cb PP |
991 | |
992 | map = *pmap; | |
993 | xfree (map); | |
994 | ||
6fbf07cd | 995 | alloc_size = 0; |
2030c079 | 996 | for (objfile *objfile : pspace->objfiles ()) |
5250cbc8 | 997 | for (obj_section *s : objfile->sections ()) |
98badbfd | 998 | if (insert_section_p (objfile->obfd.get (), s->the_bfd_section)) |
6c95b8df | 999 | alloc_size += 1; |
a845f5cb | 1000 | |
65a97ab3 PP |
1001 | /* This happens on detach/attach (e.g. in gdb.base/attach.exp). */ |
1002 | if (alloc_size == 0) | |
1003 | { | |
1004 | *pmap = NULL; | |
1005 | *pmap_size = 0; | |
1006 | return; | |
1007 | } | |
1008 | ||
8d749320 | 1009 | map = XNEWVEC (struct obj_section *, alloc_size); |
a845f5cb | 1010 | |
3aad21cf | 1011 | i = 0; |
2030c079 | 1012 | for (objfile *objfile : pspace->objfiles ()) |
5250cbc8 | 1013 | for (obj_section *s : objfile->sections ()) |
98badbfd | 1014 | if (insert_section_p (objfile->obfd.get (), s->the_bfd_section)) |
6c95b8df | 1015 | map[i++] = s; |
a845f5cb | 1016 | |
39ef2f62 | 1017 | std::sort (map, map + alloc_size, sort_cmp); |
6fbf07cd PP |
1018 | map_size = filter_debuginfo_sections(map, alloc_size); |
1019 | map_size = filter_overlapping_sections(map, map_size); | |
a845f5cb | 1020 | |
6fbf07cd PP |
1021 | if (map_size < alloc_size) |
1022 | /* Some sections were eliminated. Trim excess space. */ | |
224c3ddb | 1023 | map = XRESIZEVEC (struct obj_section *, map, map_size); |
3aad21cf | 1024 | else |
6fbf07cd | 1025 | gdb_assert (alloc_size == map_size); |
3aad21cf | 1026 | |
a845f5cb PP |
1027 | *pmap = map; |
1028 | *pmap_size = map_size; | |
1029 | } | |
1030 | ||
0df8b418 | 1031 | /* Bsearch comparison function. */ |
a845f5cb PP |
1032 | |
1033 | static int | |
1034 | bsearch_cmp (const void *key, const void *elt) | |
1035 | { | |
1036 | const CORE_ADDR pc = *(CORE_ADDR *) key; | |
1037 | const struct obj_section *section = *(const struct obj_section **) elt; | |
1038 | ||
0c1bcd23 | 1039 | if (pc < section->addr ()) |
a845f5cb | 1040 | return -1; |
0c1bcd23 | 1041 | if (pc < section->endaddr ()) |
a845f5cb PP |
1042 | return 0; |
1043 | return 1; | |
1044 | } | |
1045 | ||
714835d5 | 1046 | /* Returns a section whose range includes PC or NULL if none found. */ |
c906108c SS |
1047 | |
1048 | struct obj_section * | |
714835d5 | 1049 | find_pc_section (CORE_ADDR pc) |
c906108c | 1050 | { |
6c95b8df | 1051 | struct objfile_pspace_info *pspace_info; |
a845f5cb | 1052 | struct obj_section *s, **sp; |
c5aa993b | 1053 | |
714835d5 UW |
1054 | /* Check for mapped overlay section first. */ |
1055 | s = find_pc_mapped_section (pc); | |
1056 | if (s) | |
1057 | return s; | |
c906108c | 1058 | |
6c95b8df | 1059 | pspace_info = get_objfile_pspace_data (current_program_space); |
607ece04 GB |
1060 | if (pspace_info->section_map_dirty |
1061 | || (pspace_info->new_objfiles_available | |
1062 | && !pspace_info->inhibit_updates)) | |
a845f5cb | 1063 | { |
6c95b8df PA |
1064 | update_section_map (current_program_space, |
1065 | &pspace_info->sections, | |
1066 | &pspace_info->num_sections); | |
c906108c | 1067 | |
6c95b8df | 1068 | /* Don't need updates to section map until objfiles are added, |
dda83cd7 | 1069 | removed or relocated. */ |
607ece04 GB |
1070 | pspace_info->new_objfiles_available = 0; |
1071 | pspace_info->section_map_dirty = 0; | |
a845f5cb PP |
1072 | } |
1073 | ||
65a97ab3 PP |
1074 | /* The C standard (ISO/IEC 9899:TC2) requires the BASE argument to |
1075 | bsearch be non-NULL. */ | |
1076 | if (pspace_info->sections == NULL) | |
1077 | { | |
1078 | gdb_assert (pspace_info->num_sections == 0); | |
1079 | return NULL; | |
1080 | } | |
1081 | ||
6c95b8df PA |
1082 | sp = (struct obj_section **) bsearch (&pc, |
1083 | pspace_info->sections, | |
1084 | pspace_info->num_sections, | |
1085 | sizeof (*pspace_info->sections), | |
1086 | bsearch_cmp); | |
a845f5cb PP |
1087 | if (sp != NULL) |
1088 | return *sp; | |
714835d5 | 1089 | return NULL; |
c906108c | 1090 | } |
c5aa993b | 1091 | |
c906108c | 1092 | |
3e5d3a5a | 1093 | /* Return non-zero if PC is in a section called NAME. */ |
c906108c | 1094 | |
6ec27270 | 1095 | bool |
a121b7c1 | 1096 | pc_in_section (CORE_ADDR pc, const char *name) |
c906108c | 1097 | { |
6ec27270 TT |
1098 | struct obj_section *s = find_pc_section (pc); |
1099 | return (s != nullptr | |
1100 | && s->the_bfd_section->name != nullptr | |
1101 | && strcmp (s->the_bfd_section->name, name) == 0); | |
c906108c | 1102 | } |
0d0e1a63 | 1103 | |
da273247 | 1104 | /* See objfiles.h. */ |
a845f5cb PP |
1105 | |
1106 | void | |
da273247 | 1107 | objfiles_changed (program_space *pspace) |
a845f5cb | 1108 | { |
6c95b8df | 1109 | /* Rebuild section map next time we need it. */ |
da273247 | 1110 | get_objfile_pspace_data (pspace)->section_map_dirty = 1; |
607ece04 GB |
1111 | } |
1112 | ||
1113 | /* See comments in objfiles.h. */ | |
1114 | ||
06424eac | 1115 | scoped_restore_tmpl<int> |
607ece04 GB |
1116 | inhibit_section_map_updates (struct program_space *pspace) |
1117 | { | |
06424eac TT |
1118 | return scoped_restore_tmpl<int> |
1119 | (&get_objfile_pspace_data (pspace)->inhibit_updates, 1); | |
a845f5cb | 1120 | } |
e3c69974 | 1121 | |
02ff80c2 | 1122 | /* See objfiles.h. */ |
63644780 | 1123 | |
02ff80c2 | 1124 | bool |
63644780 NB |
1125 | is_addr_in_objfile (CORE_ADDR addr, const struct objfile *objfile) |
1126 | { | |
63644780 | 1127 | if (objfile == NULL) |
02ff80c2 | 1128 | return false; |
63644780 | 1129 | |
5250cbc8 | 1130 | for (obj_section *osect : objfile->sections ()) |
63644780 NB |
1131 | { |
1132 | if (section_is_overlay (osect) && !section_is_mapped (osect)) | |
1133 | continue; | |
1134 | ||
94a75b03 | 1135 | if (osect->contains (addr)) |
02ff80c2 | 1136 | return true; |
63644780 | 1137 | } |
02ff80c2 | 1138 | return false; |
63644780 NB |
1139 | } |
1140 | ||
02ff80c2 SM |
1141 | /* See objfiles.h. */ |
1142 | ||
1143 | bool | |
d03de421 PA |
1144 | shared_objfile_contains_address_p (struct program_space *pspace, |
1145 | CORE_ADDR address) | |
08351840 | 1146 | { |
2030c079 | 1147 | for (objfile *objfile : pspace->objfiles ()) |
08351840 | 1148 | { |
d03de421 | 1149 | if ((objfile->flags & OBJF_SHARED) != 0 |
08351840 | 1150 | && is_addr_in_objfile (address, objfile)) |
02ff80c2 | 1151 | return true; |
08351840 PA |
1152 | } |
1153 | ||
02ff80c2 | 1154 | return false; |
08351840 PA |
1155 | } |
1156 | ||
19630284 | 1157 | /* The default implementation for the "iterate_over_objfiles_in_search_order" |
2030c079 | 1158 | gdbarch method. It is equivalent to use the objfiles iterable, |
19630284 JB |
1159 | searching the objfiles in the order they are stored internally, |
1160 | ignoring CURRENT_OBJFILE. | |
1161 | ||
85102364 | 1162 | On most platforms, it should be close enough to doing the best |
19630284 JB |
1163 | we can without some knowledge specific to the architecture. */ |
1164 | ||
1165 | void | |
1166 | default_iterate_over_objfiles_in_search_order | |
6e9cd73e SM |
1167 | (gdbarch *gdbarch, iterate_over_objfiles_in_search_order_cb_ftype cb, |
1168 | objfile *current_objfile) | |
19630284 | 1169 | { |
2030c079 | 1170 | for (objfile *objfile : current_program_space->objfiles ()) |
6e9cd73e SM |
1171 | if (cb (objfile)) |
1172 | return; | |
19630284 JB |
1173 | } |
1174 | ||
e02c96a7 | 1175 | /* See objfiles.h. */ |
4262abfb JK |
1176 | |
1177 | const char * | |
1178 | objfile_name (const struct objfile *objfile) | |
1179 | { | |
24ba069a | 1180 | if (objfile->obfd != NULL) |
98badbfd | 1181 | return bfd_get_filename (objfile->obfd.get ()); |
24ba069a | 1182 | |
4262abfb JK |
1183 | return objfile->original_name; |
1184 | } | |
1185 | ||
cc485e62 DE |
1186 | /* See objfiles.h. */ |
1187 | ||
e02c96a7 DE |
1188 | const char * |
1189 | objfile_filename (const struct objfile *objfile) | |
1190 | { | |
1191 | if (objfile->obfd != NULL) | |
98badbfd | 1192 | return bfd_get_filename (objfile->obfd.get ()); |
e02c96a7 DE |
1193 | |
1194 | return NULL; | |
1195 | } | |
1196 | ||
1197 | /* See objfiles.h. */ | |
1198 | ||
cc485e62 DE |
1199 | const char * |
1200 | objfile_debug_name (const struct objfile *objfile) | |
1201 | { | |
1202 | return lbasename (objfile->original_name); | |
1203 | } | |
1204 | ||
015d2e7e DE |
1205 | /* See objfiles.h. */ |
1206 | ||
1207 | const char * | |
1208 | objfile_flavour_name (struct objfile *objfile) | |
1209 | { | |
1210 | if (objfile->obfd != NULL) | |
98badbfd | 1211 | return bfd_flavour_name (bfd_get_flavour (objfile->obfd.get ())); |
015d2e7e DE |
1212 | return NULL; |
1213 | } | |
b3a01ce2 WP |
1214 | |
1215 | /* See objfiles.h. */ | |
1216 | ||
1217 | struct type * | |
1218 | objfile_int_type (struct objfile *of, int size_in_bytes, bool unsigned_p) | |
1219 | { | |
1220 | struct type *int_type; | |
1221 | ||
1222 | /* Helper macro to examine the various builtin types. */ | |
1223 | #define TRY_TYPE(F) \ | |
1224 | int_type = (unsigned_p \ | |
a8ed3dde TT |
1225 | ? builtin_type (of)->builtin_unsigned_ ## F \ |
1226 | : builtin_type (of)->builtin_ ## F); \ | |
df86565b | 1227 | if (int_type != NULL && int_type->length () == size_in_bytes) \ |
b3a01ce2 WP |
1228 | return int_type |
1229 | ||
1230 | TRY_TYPE (char); | |
1231 | TRY_TYPE (short); | |
1232 | TRY_TYPE (int); | |
1233 | TRY_TYPE (long); | |
1234 | TRY_TYPE (long_long); | |
1235 | ||
1236 | #undef TRY_TYPE | |
1237 | ||
1238 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
1239 | } |