]>
Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Support routines for building symbol tables in GDB's internal format. |
213516ef | 2 | Copyright (C) 1986-2023 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 18 | |
c906108c | 19 | #include "defs.h" |
d55e5aa6 | 20 | #include "buildsym-legacy.h" |
4de283e4 | 21 | #include "bfd.h" |
bf31fd38 | 22 | #include "gdbsupport/gdb_obstack.h" |
ffaebc19 | 23 | #include "gdbsupport/pathstuff.h" |
4de283e4 TT |
24 | #include "symtab.h" |
25 | #include "symfile.h" | |
26 | #include "objfiles.h" | |
d55e5aa6 | 27 | #include "gdbtypes.h" |
4de283e4 TT |
28 | #include "complaints.h" |
29 | #include "expression.h" /* For "enum exp_opcode" used by... */ | |
30 | #include "filenames.h" /* For DOSish file names. */ | |
d55e5aa6 | 31 | #include "macrotab.h" |
4de283e4 TT |
32 | #include "demangle.h" /* Needed by SYMBOL_INIT_DEMANGLED_NAME. */ |
33 | #include "block.h" | |
34 | #include "cp-support.h" | |
35 | #include "dictionary.h" | |
4de283e4 | 36 | #include <algorithm> |
9219021c | 37 | |
0a0edcd5 | 38 | /* For cleanup_undefined_stabs_types and finish_global_stabs (somewhat |
c906108c SS |
39 | questionable--see comment where we call them). */ |
40 | ||
41 | #include "stabsread.h" | |
42 | ||
93eed41f TT |
43 | /* List of blocks already made (lexical contexts already closed). |
44 | This is used at the end to make the blockvector. */ | |
45 | ||
46 | struct pending_block | |
47 | { | |
48 | struct pending_block *next; | |
49 | struct block *block; | |
50 | }; | |
51 | ||
ab209f6f TT |
52 | buildsym_compunit::buildsym_compunit (struct objfile *objfile_, |
53 | const char *name, | |
54 | const char *comp_dir_, | |
f71ad555 | 55 | const char *name_for_id, |
ab209f6f TT |
56 | enum language language_, |
57 | CORE_ADDR last_addr) | |
cbb09508 | 58 | : m_objfile (objfile_), |
ab209f6f | 59 | m_last_source_file (name == nullptr ? nullptr : xstrdup (name)), |
ebd4e6d0 | 60 | m_comp_dir (comp_dir_ == nullptr ? "" : comp_dir_), |
cbb09508 | 61 | m_language (language_), |
ab209f6f TT |
62 | m_last_source_start_addr (last_addr) |
63 | { | |
64 | /* Allocate the compunit symtab now. The caller needs it to allocate | |
65 | non-primary symtabs. It is also needed by get_macro_table. */ | |
cbb09508 | 66 | m_compunit_symtab = allocate_compunit_symtab (m_objfile, name); |
ab209f6f TT |
67 | |
68 | /* Build the subfile for NAME (the main source file) so that we can record | |
69 | a pointer to it for later. | |
70 | IMPORTANT: Do not allocate a struct symtab for NAME here. | |
71 | It can happen that the debug info provides a different path to NAME than | |
72 | DIRNAME,NAME. We cope with this in watch_main_source_file_lossage but | |
73 | that only works if the main_subfile doesn't have a symtab yet. */ | |
f71ad555 | 74 | start_subfile (name, name_for_id); |
ab209f6f TT |
75 | /* Save this so that we don't have to go looking for it at the end |
76 | of the subfiles list. */ | |
cbb09508 | 77 | m_main_subfile = m_current_subfile; |
ab209f6f TT |
78 | } |
79 | ||
80 | buildsym_compunit::~buildsym_compunit () | |
81 | { | |
82 | struct subfile *subfile, *nextsub; | |
83 | ||
84 | if (m_pending_macros != nullptr) | |
85 | free_macro_table (m_pending_macros); | |
86 | ||
cbb09508 | 87 | for (subfile = m_subfiles; |
ab209f6f TT |
88 | subfile != NULL; |
89 | subfile = nextsub) | |
90 | { | |
91 | nextsub = subfile->next; | |
71bc95ed | 92 | delete subfile; |
ab209f6f TT |
93 | } |
94 | ||
95 | struct pending *next, *next1; | |
96 | ||
97 | for (next = m_file_symbols; next != NULL; next = next1) | |
98 | { | |
99 | next1 = next->next; | |
100 | xfree ((void *) next); | |
101 | } | |
102 | ||
103 | for (next = m_global_symbols; next != NULL; next = next1) | |
104 | { | |
105 | next1 = next->next; | |
106 | xfree ((void *) next); | |
107 | } | |
108 | } | |
109 | ||
110 | struct macro_table * | |
111 | buildsym_compunit::get_macro_table () | |
112 | { | |
113 | if (m_pending_macros == nullptr) | |
cbb09508 | 114 | m_pending_macros = new_macro_table (&m_objfile->per_bfd->storage_obstack, |
be1e3d3e | 115 | &m_objfile->per_bfd->string_cache, |
cbb09508 | 116 | m_compunit_symtab); |
ab209f6f TT |
117 | return m_pending_macros; |
118 | } | |
119 | ||
4a64f543 | 120 | /* Maintain the lists of symbols and blocks. */ |
c906108c | 121 | |
93bf33fd | 122 | /* Add a symbol to one of the lists of symbols. */ |
c906108c SS |
123 | |
124 | void | |
125 | add_symbol_to_list (struct symbol *symbol, struct pending **listhead) | |
126 | { | |
52f0bd74 | 127 | struct pending *link; |
c906108c SS |
128 | |
129 | /* If this is an alias for another symbol, don't add it. */ | |
4d4eaa30 | 130 | if (symbol->linkage_name () && symbol->linkage_name ()[0] == '#') |
c906108c SS |
131 | return; |
132 | ||
4a64f543 | 133 | /* We keep PENDINGSIZE symbols in each link of the list. If we |
c906108c SS |
134 | don't have a link with room in it, add a new link. */ |
135 | if (*listhead == NULL || (*listhead)->nsyms == PENDINGSIZE) | |
136 | { | |
1d376700 | 137 | link = XNEW (struct pending); |
c906108c SS |
138 | link->next = *listhead; |
139 | *listhead = link; | |
140 | link->nsyms = 0; | |
141 | } | |
142 | ||
143 | (*listhead)->symbol[(*listhead)->nsyms++] = symbol; | |
144 | } | |
145 | ||
146 | /* Find a symbol named NAME on a LIST. NAME need not be | |
147 | '\0'-terminated; LENGTH is the length of the name. */ | |
148 | ||
149 | struct symbol * | |
150 | find_symbol_in_list (struct pending *list, char *name, int length) | |
151 | { | |
152 | int j; | |
0d5cff50 | 153 | const char *pp; |
c906108c SS |
154 | |
155 | while (list != NULL) | |
156 | { | |
157 | for (j = list->nsyms; --j >= 0;) | |
158 | { | |
987012b8 | 159 | pp = list->symbol[j]->linkage_name (); |
5aafa1cc PM |
160 | if (*pp == *name && strncmp (pp, name, length) == 0 |
161 | && pp[length] == '\0') | |
c906108c SS |
162 | { |
163 | return (list->symbol[j]); | |
164 | } | |
165 | } | |
166 | list = list->next; | |
167 | } | |
168 | return (NULL); | |
169 | } | |
170 | ||
6b213a47 TT |
171 | /* Record BLOCK on the list of all blocks in the file. Put it after |
172 | OPBLOCK, or at the beginning if opblock is NULL. This puts the | |
173 | block in the list after all its subblocks. */ | |
174 | ||
4a2125f5 TT |
175 | void |
176 | buildsym_compunit::record_pending_block (struct block *block, | |
177 | struct pending_block *opblock) | |
6b213a47 TT |
178 | { |
179 | struct pending_block *pblock; | |
180 | ||
4a2125f5 | 181 | pblock = XOBNEW (&m_pending_block_obstack, struct pending_block); |
6b213a47 TT |
182 | pblock->block = block; |
183 | if (opblock) | |
184 | { | |
185 | pblock->next = opblock->next; | |
186 | opblock->next = pblock; | |
187 | } | |
188 | else | |
189 | { | |
4a2125f5 TT |
190 | pblock->next = m_pending_blocks; |
191 | m_pending_blocks = pblock; | |
6b213a47 TT |
192 | } |
193 | } | |
194 | ||
c906108c SS |
195 | /* Take one of the lists of symbols and make a block from it. Keep |
196 | the order the symbols have in the list (reversed from the input | |
197 | file). Put the block on the list of pending blocks. */ | |
198 | ||
4a2125f5 TT |
199 | struct block * |
200 | buildsym_compunit::finish_block_internal | |
201 | (struct symbol *symbol, | |
202 | struct pending **listhead, | |
203 | struct pending_block *old_blocks, | |
204 | const struct dynamic_prop *static_link, | |
205 | CORE_ADDR start, CORE_ADDR end, | |
206 | int is_global, int expandable) | |
c906108c | 207 | { |
08feed99 | 208 | struct gdbarch *gdbarch = m_objfile->arch (); |
52f0bd74 AC |
209 | struct pending *next, *next1; |
210 | struct block *block; | |
211 | struct pending_block *pblock; | |
c906108c | 212 | struct pending_block *opblock; |
c906108c | 213 | |
52255383 TT |
214 | if (is_global) |
215 | block = new (&m_objfile->objfile_obstack) global_block; | |
216 | else | |
217 | block = new (&m_objfile->objfile_obstack) struct block; | |
c906108c | 218 | |
261397f8 DJ |
219 | if (symbol) |
220 | { | |
24d74bb5 SM |
221 | block->set_multidict |
222 | (mdict_create_linear (&m_objfile->objfile_obstack, *listhead)); | |
261397f8 DJ |
223 | } |
224 | else | |
c906108c | 225 | { |
6d30eef8 DE |
226 | if (expandable) |
227 | { | |
24d74bb5 SM |
228 | block->set_multidict |
229 | (mdict_create_hashed_expandable (m_language)); | |
230 | mdict_add_pending (block->multidict (), *listhead); | |
6d30eef8 DE |
231 | } |
232 | else | |
233 | { | |
24d74bb5 SM |
234 | block->set_multidict |
235 | (mdict_create_hashed (&m_objfile->objfile_obstack, *listhead)); | |
6d30eef8 | 236 | } |
c906108c SS |
237 | } |
238 | ||
4b8791e1 SM |
239 | block->set_start (start); |
240 | block->set_end (end); | |
c906108c | 241 | |
c906108c SS |
242 | /* Put the block in as the value of the symbol that names it. */ |
243 | ||
244 | if (symbol) | |
245 | { | |
5f9c5a63 | 246 | struct type *ftype = symbol->type (); |
b026f593 | 247 | struct mdict_iterator miter; |
4aeddc50 | 248 | symbol->set_value_block (block); |
5abbfa98 | 249 | symbol->set_section_index (SECT_OFF_TEXT (m_objfile)); |
6c00f721 | 250 | block->set_function (symbol); |
c906108c | 251 | |
1f704f76 | 252 | if (ftype->num_fields () <= 0) |
c906108c SS |
253 | { |
254 | /* No parameter type information is recorded with the | |
255 | function's type. Set that from the type of the | |
4a64f543 | 256 | parameter symbols. */ |
c906108c SS |
257 | int nparams = 0, iparams; |
258 | struct symbol *sym; | |
8157b174 TT |
259 | |
260 | /* Here we want to directly access the dictionary, because | |
261 | we haven't fully initialized the block yet. */ | |
24d74bb5 | 262 | ALL_DICT_SYMBOLS (block->multidict (), miter, sym) |
c906108c | 263 | { |
d9743061 | 264 | if (sym->is_argument ()) |
2a2d4dc3 | 265 | nparams++; |
c906108c SS |
266 | } |
267 | if (nparams > 0) | |
268 | { | |
5e33d5f4 | 269 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
270 | ftype->set_fields |
271 | ((struct field *) | |
272 | TYPE_ALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 273 | |
de4f826b | 274 | iparams = 0; |
8157b174 TT |
275 | /* Here we want to directly access the dictionary, because |
276 | we haven't fully initialized the block yet. */ | |
24d74bb5 | 277 | ALL_DICT_SYMBOLS (block->multidict (), miter, sym) |
c906108c | 278 | { |
de4f826b DC |
279 | if (iparams == nparams) |
280 | break; | |
281 | ||
d9743061 | 282 | if (sym->is_argument ()) |
c906108c | 283 | { |
5f9c5a63 | 284 | ftype->field (iparams).set_type (sym->type ()); |
8176bb6d | 285 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c | 286 | iparams++; |
c906108c SS |
287 | } |
288 | } | |
289 | } | |
290 | } | |
291 | } | |
292 | else | |
6c00f721 | 293 | block->set_function (nullptr); |
c906108c | 294 | |
63e43d3a | 295 | if (static_link != NULL) |
cbb09508 | 296 | objfile_register_static_link (m_objfile, block, static_link); |
63e43d3a | 297 | |
1d376700 | 298 | /* Now free the links of the list, and empty the list. */ |
c906108c SS |
299 | |
300 | for (next = *listhead; next; next = next1) | |
301 | { | |
302 | next1 = next->next; | |
1d376700 | 303 | xfree (next); |
c906108c SS |
304 | } |
305 | *listhead = NULL; | |
306 | ||
c906108c | 307 | /* Check to be sure that the blocks have an end address that is |
4a64f543 | 308 | greater than starting address. */ |
c906108c | 309 | |
4b8791e1 | 310 | if (block->end () < block->start ()) |
c906108c SS |
311 | { |
312 | if (symbol) | |
313 | { | |
b98664d3 | 314 | complaint (_("block end address less than block " |
3e43a32a | 315 | "start address in %s (patched it)"), |
987012b8 | 316 | symbol->print_name ()); |
c906108c SS |
317 | } |
318 | else | |
319 | { | |
b98664d3 | 320 | complaint (_("block end address %s less than block " |
3e43a32a | 321 | "start address %s (patched it)"), |
4b8791e1 SM |
322 | paddress (gdbarch, block->end ()), |
323 | paddress (gdbarch, block->start ())); | |
c906108c | 324 | } |
4a64f543 | 325 | /* Better than nothing. */ |
4b8791e1 | 326 | block->set_end (block->start ()); |
c906108c | 327 | } |
c906108c SS |
328 | |
329 | /* Install this block as the superblock of all blocks made since the | |
330 | start of this scope that don't have superblocks yet. */ | |
331 | ||
332 | opblock = NULL; | |
4a2125f5 | 333 | for (pblock = m_pending_blocks; |
c0219d42 MS |
334 | pblock && pblock != old_blocks; |
335 | pblock = pblock->next) | |
c906108c | 336 | { |
f135fe72 | 337 | if (pblock->block->superblock () == NULL) |
c906108c | 338 | { |
c906108c | 339 | /* Check to be sure the blocks are nested as we receive |
4a64f543 | 340 | them. If the compiler/assembler/linker work, this just |
14711c82 DJ |
341 | burns a small amount of time. |
342 | ||
343 | Skip blocks which correspond to a function; they're not | |
344 | physically nested inside this other blocks, only | |
345 | lexically nested. */ | |
6c00f721 | 346 | if (pblock->block->function () == NULL |
4b8791e1 SM |
347 | && (pblock->block->start () < block->start () |
348 | || pblock->block->end () > block->end ())) | |
c906108c SS |
349 | { |
350 | if (symbol) | |
351 | { | |
b98664d3 | 352 | complaint (_("inner block not inside outer block in %s"), |
987012b8 | 353 | symbol->print_name ()); |
c906108c SS |
354 | } |
355 | else | |
356 | { | |
b98664d3 | 357 | complaint (_("inner block (%s-%s) not " |
3e43a32a | 358 | "inside outer block (%s-%s)"), |
4b8791e1 SM |
359 | paddress (gdbarch, pblock->block->start ()), |
360 | paddress (gdbarch, pblock->block->end ()), | |
361 | paddress (gdbarch, block->start ()), | |
362 | paddress (gdbarch, block->end ())); | |
c906108c | 363 | } |
4b8791e1 SM |
364 | |
365 | if (pblock->block->start () < block->start ()) | |
366 | pblock->block->set_start (block->start ()); | |
367 | ||
368 | if (pblock->block->end () > block->end ()) | |
369 | pblock->block->set_end (block->end ()); | |
c906108c | 370 | } |
f135fe72 | 371 | pblock->block->set_superblock (block); |
c906108c SS |
372 | } |
373 | opblock = pblock; | |
374 | } | |
375 | ||
3c45e9f9 TT |
376 | block->set_using ((is_global |
377 | ? m_global_using_directives | |
378 | : m_local_using_directives), | |
379 | &m_objfile->objfile_obstack); | |
22cee43f | 380 | if (is_global) |
4a2125f5 | 381 | m_global_using_directives = NULL; |
22cee43f | 382 | else |
4a2125f5 | 383 | m_local_using_directives = NULL; |
27aa8d6a | 384 | |
6b213a47 | 385 | record_pending_block (block, opblock); |
801e3a5b JB |
386 | |
387 | return block; | |
c906108c SS |
388 | } |
389 | ||
84a146c9 | 390 | struct block * |
4a2125f5 TT |
391 | buildsym_compunit::finish_block (struct symbol *symbol, |
392 | struct pending_block *old_blocks, | |
393 | const struct dynamic_prop *static_link, | |
394 | CORE_ADDR start, CORE_ADDR end) | |
84a146c9 | 395 | { |
4a2125f5 TT |
396 | return finish_block_internal (symbol, &m_local_symbols, |
397 | old_blocks, static_link, start, end, 0, 0); | |
84a146c9 | 398 | } |
de4f826b | 399 | |
801e3a5b JB |
400 | /* Record that the range of addresses from START to END_INCLUSIVE |
401 | (inclusive, like it says) belongs to BLOCK. BLOCK's start and end | |
402 | addresses must be set already. You must apply this function to all | |
403 | BLOCK's children before applying it to BLOCK. | |
404 | ||
405 | If a call to this function complicates the picture beyond that | |
406 | already provided by BLOCK_START and BLOCK_END, then we create an | |
407 | address map for the block. */ | |
408 | void | |
4a2125f5 TT |
409 | buildsym_compunit::record_block_range (struct block *block, |
410 | CORE_ADDR start, | |
411 | CORE_ADDR end_inclusive) | |
801e3a5b JB |
412 | { |
413 | /* If this is any different from the range recorded in the block's | |
414 | own BLOCK_START and BLOCK_END, then note that the address map has | |
415 | become interesting. Note that even if this block doesn't have | |
416 | any "interesting" ranges, some later block might, so we still | |
417 | need to record this block in the addrmap. */ | |
4b8791e1 SM |
418 | if (start != block->start () |
419 | || end_inclusive + 1 != block->end ()) | |
4a2125f5 | 420 | m_pending_addrmap_interesting = true; |
801e3a5b | 421 | |
93b527ef | 422 | m_pending_addrmap.set_empty (start, end_inclusive, block); |
801e3a5b JB |
423 | } |
424 | ||
4a2125f5 TT |
425 | struct blockvector * |
426 | buildsym_compunit::make_blockvector () | |
c906108c | 427 | { |
52f0bd74 AC |
428 | struct pending_block *next; |
429 | struct blockvector *blockvector; | |
430 | int i; | |
c906108c SS |
431 | |
432 | /* Count the length of the list of blocks. */ | |
433 | ||
4a2125f5 | 434 | for (next = m_pending_blocks, i = 0; next; next = next->next, i++) |
5ac04550 | 435 | { |
c906108c SS |
436 | } |
437 | ||
438 | blockvector = (struct blockvector *) | |
cbb09508 | 439 | obstack_alloc (&m_objfile->objfile_obstack, |
c906108c SS |
440 | (sizeof (struct blockvector) |
441 | + (i - 1) * sizeof (struct block *))); | |
442 | ||
4a64f543 | 443 | /* Copy the blocks into the blockvector. This is done in reverse |
c906108c | 444 | order, which happens to put the blocks into the proper order |
4a64f543 | 445 | (ascending starting address). finish_block has hair to insert |
c906108c SS |
446 | each block into the list after its subblocks in order to make |
447 | sure this is true. */ | |
448 | ||
63d609de | 449 | blockvector->set_num_blocks (i); |
4a2125f5 | 450 | for (next = m_pending_blocks; next; next = next->next) |
63d609de | 451 | blockvector->set_block (--i, next->block); |
c906108c | 452 | |
4a2125f5 | 453 | free_pending_blocks (); |
c906108c | 454 | |
801e3a5b JB |
455 | /* If we needed an address map for this symtab, record it in the |
456 | blockvector. */ | |
93b527ef | 457 | if (m_pending_addrmap_interesting) |
414705d1 | 458 | blockvector->set_map |
d89120e9 | 459 | (new (&m_objfile->objfile_obstack) addrmap_fixed |
93b527ef | 460 | (&m_objfile->objfile_obstack, &m_pending_addrmap)); |
801e3a5b | 461 | else |
414705d1 | 462 | blockvector->set_map (nullptr); |
4aad0dfc | 463 | |
c906108c | 464 | /* Some compilers output blocks in the wrong order, but we depend on |
4a64f543 | 465 | their being in the right order so we can binary search. Check the |
4aad0dfc DE |
466 | order and moan about it. |
467 | Note: Remember that the first two blocks are the global and static | |
468 | blocks. We could special case that fact and begin checking at block 2. | |
469 | To avoid making that assumption we do not. */ | |
63d609de | 470 | if (blockvector->num_blocks () > 1) |
c906108c | 471 | { |
63d609de | 472 | for (i = 1; i < blockvector->num_blocks (); i++) |
c906108c | 473 | { |
63d609de SM |
474 | if (blockvector->block (i - 1)->start () |
475 | > blockvector->block (i)->start ()) | |
c906108c | 476 | { |
59527da0 | 477 | CORE_ADDR start |
63d609de | 478 | = blockvector->block (i)->start (); |
c906108c | 479 | |
b98664d3 | 480 | complaint (_("block at %s out of order"), |
bb599908 | 481 | hex_string ((LONGEST) start)); |
c906108c SS |
482 | } |
483 | } | |
484 | } | |
c906108c SS |
485 | |
486 | return (blockvector); | |
487 | } | |
f71ad555 SM |
488 | |
489 | /* See buildsym.h. */ | |
c906108c SS |
490 | |
491 | void | |
f71ad555 | 492 | buildsym_compunit::start_subfile (const char *name, const char *name_for_id) |
c906108c | 493 | { |
43f3e411 DE |
494 | /* See if this subfile is already registered. */ |
495 | ||
f71ad555 | 496 | symtab_create_debug_printf ("name = %s, name_for_id = %s", name, name_for_id); |
80affb9f | 497 | |
71bc95ed | 498 | for (subfile *subfile = m_subfiles; subfile; subfile = subfile->next) |
ee26d001 SM |
499 | if (FILENAME_CMP (subfile->name_for_id.c_str (), name_for_id) == 0) |
500 | { | |
501 | symtab_create_debug_printf ("found existing symtab with name_for_id %s", | |
502 | subfile->name_for_id.c_str ()); | |
503 | m_current_subfile = subfile; | |
504 | return; | |
505 | } | |
c906108c | 506 | |
43f3e411 | 507 | /* This subfile is not known. Add an entry for it. */ |
c906108c | 508 | |
71bc95ed | 509 | subfile_up subfile (new struct subfile); |
ebd4e6d0 | 510 | subfile->name = name; |
f71ad555 | 511 | subfile->name_for_id = name_for_id; |
43f3e411 | 512 | |
71bc95ed | 513 | m_current_subfile = subfile.get (); |
c906108c | 514 | |
c906108c SS |
515 | /* Default the source language to whatever can be deduced from the |
516 | filename. If nothing can be deduced (such as for a C/C++ include | |
517 | file with a ".h" extension), then inherit whatever language the | |
518 | previous subfile had. This kludgery is necessary because there | |
519 | is no standard way in some object formats to record the source | |
520 | language. Also, when symtabs are allocated we try to deduce a | |
521 | language then as well, but it is too late for us to use that | |
522 | information while reading symbols, since symtabs aren't allocated | |
523 | until after all the symbols have been processed for a given | |
4a64f543 | 524 | source file. */ |
c906108c | 525 | |
ebd4e6d0 | 526 | subfile->language = deduce_language_from_filename (subfile->name.c_str ()); |
71bc95ed SM |
527 | if (subfile->language == language_unknown && m_subfiles != nullptr) |
528 | subfile->language = m_subfiles->language; | |
c906108c | 529 | |
25caa7a8 | 530 | /* If the filename of this subfile ends in .C, then change the |
c906108c | 531 | language of any pending subfiles from C to C++. We also accept |
25caa7a8 | 532 | any other C++ suffixes accepted by deduce_language_from_filename. */ |
c906108c SS |
533 | /* Likewise for f2c. */ |
534 | ||
ebd4e6d0 | 535 | if (!subfile->name.empty ()) |
c906108c SS |
536 | { |
537 | struct subfile *s; | |
ebd4e6d0 | 538 | language sublang = deduce_language_from_filename (subfile->name.c_str ()); |
c906108c SS |
539 | |
540 | if (sublang == language_cplus || sublang == language_fortran) | |
cbb09508 | 541 | for (s = m_subfiles; s != NULL; s = s->next) |
c906108c SS |
542 | if (s->language == language_c) |
543 | s->language = sublang; | |
544 | } | |
545 | ||
546 | /* And patch up this file if necessary. */ | |
547 | if (subfile->language == language_c | |
71bc95ed SM |
548 | && m_subfiles != nullptr |
549 | && (m_subfiles->language == language_cplus | |
550 | || m_subfiles->language == language_fortran)) | |
551 | subfile->language = m_subfiles->language; | |
552 | ||
553 | /* Link this subfile at the front of the subfile list. */ | |
554 | subfile->next = m_subfiles; | |
555 | m_subfiles = subfile.release (); | |
c906108c SS |
556 | } |
557 | ||
558 | /* For stabs readers, the first N_SO symbol is assumed to be the | |
559 | source file name, and the subfile struct is initialized using that | |
560 | assumption. If another N_SO symbol is later seen, immediately | |
561 | following the first one, then the first one is assumed to be the | |
562 | directory name and the second one is really the source file name. | |
563 | ||
564 | So we have to patch up the subfile struct by moving the old name | |
565 | value to dirname and remembering the new name. Some sanity | |
566 | checking is performed to ensure that the state of the subfile | |
567 | struct is reasonable and that the old name we are assuming to be a | |
4a64f543 | 568 | directory name actually is (by checking for a trailing '/'). */ |
c906108c SS |
569 | |
570 | void | |
4a2125f5 TT |
571 | buildsym_compunit::patch_subfile_names (struct subfile *subfile, |
572 | const char *name) | |
c906108c | 573 | { |
43f3e411 | 574 | if (subfile != NULL |
ebd4e6d0 SM |
575 | && m_comp_dir.empty () |
576 | && !subfile->name.empty () | |
577 | && IS_DIR_SEPARATOR (subfile->name.back ())) | |
c906108c | 578 | { |
ebd4e6d0 SM |
579 | m_comp_dir = std::move (subfile->name); |
580 | subfile->name = name; | |
f71ad555 | 581 | subfile->name_for_id = name; |
46212e0b | 582 | set_last_source_file (name); |
c906108c SS |
583 | |
584 | /* Default the source language to whatever can be deduced from | |
dda83cd7 SM |
585 | the filename. If nothing can be deduced (such as for a C/C++ |
586 | include file with a ".h" extension), then inherit whatever | |
587 | language the previous subfile had. This kludgery is | |
588 | necessary because there is no standard way in some object | |
589 | formats to record the source language. Also, when symtabs | |
590 | are allocated we try to deduce a language then as well, but | |
591 | it is too late for us to use that information while reading | |
592 | symbols, since symtabs aren't allocated until after all the | |
593 | symbols have been processed for a given source file. */ | |
c906108c | 594 | |
ebd4e6d0 SM |
595 | subfile->language |
596 | = deduce_language_from_filename (subfile->name.c_str ()); | |
5aafa1cc PM |
597 | if (subfile->language == language_unknown |
598 | && subfile->next != NULL) | |
c906108c SS |
599 | { |
600 | subfile->language = subfile->next->language; | |
601 | } | |
602 | } | |
603 | } | |
604 | \f | |
605 | /* Handle the N_BINCL and N_EINCL symbol types that act like N_SOL for | |
606 | switching source files (different subfiles, as we call them) within | |
607 | one object file, but using a stack rather than in an arbitrary | |
608 | order. */ | |
609 | ||
610 | void | |
4a2125f5 | 611 | buildsym_compunit::push_subfile () |
c906108c | 612 | { |
4a2125f5 | 613 | gdb_assert (m_current_subfile != NULL); |
ebd4e6d0 SM |
614 | gdb_assert (!m_current_subfile->name.empty ()); |
615 | m_subfile_stack.push_back (m_current_subfile->name.c_str ()); | |
c906108c SS |
616 | } |
617 | ||
8419ee53 | 618 | const char * |
4a2125f5 | 619 | buildsym_compunit::pop_subfile () |
c906108c | 620 | { |
4a2125f5 TT |
621 | gdb_assert (!m_subfile_stack.empty ()); |
622 | const char *name = m_subfile_stack.back (); | |
623 | m_subfile_stack.pop_back (); | |
8419ee53 | 624 | return name; |
c906108c SS |
625 | } |
626 | \f | |
627 | /* Add a linetable entry for line number LINE and address PC to the | |
628 | line vector for SUBFILE. */ | |
629 | ||
630 | void | |
4a2125f5 | 631 | buildsym_compunit::record_line (struct subfile *subfile, int line, |
6cacd78b | 632 | CORE_ADDR pc, linetable_entry_flags flags) |
c906108c | 633 | { |
558802e4 | 634 | m_have_line_numbers = true; |
c906108c | 635 | |
a25198bb BE |
636 | /* Normally, we treat lines as unsorted. But the end of sequence |
637 | marker is special. We sort line markers at the same PC by line | |
638 | number, so end of sequence markers (which have line == 0) appear | |
639 | first. This is right if the marker ends the previous function, | |
640 | and there is no padding before the next function. But it is | |
641 | wrong if the previous line was empty and we are now marking a | |
642 | switch to a different subfile. We must leave the end of sequence | |
643 | marker at the end of this group of lines, not sort the empty line | |
644 | to after the marker. The easiest way to accomplish this is to | |
645 | delete any empty lines from our table, if they are followed by | |
646 | end of sequence markers. All we lose is the ability to set | |
647 | breakpoints at some lines which contain no instructions | |
648 | anyway. */ | |
649 | if (line == 0) | |
607ae575 | 650 | { |
558802e4 SM |
651 | gdb::optional<int> last_line; |
652 | ||
653 | while (!subfile->line_vector_entries.empty ()) | |
607ae575 | 654 | { |
558802e4 SM |
655 | linetable_entry *last = &subfile->line_vector_entries.back (); |
656 | last_line = last->line; | |
657 | ||
1acc9dca | 658 | if (last->raw_pc () != pc) |
64dc2d4b | 659 | break; |
558802e4 SM |
660 | |
661 | subfile->line_vector_entries.pop_back (); | |
607ae575 | 662 | } |
e4ad960a TV |
663 | |
664 | /* Ignore an end-of-sequence marker marking an empty sequence. */ | |
558802e4 | 665 | if (!last_line.has_value () || *last_line == 0) |
e4ad960a | 666 | return; |
607ae575 DJ |
667 | } |
668 | ||
558802e4 SM |
669 | subfile->line_vector_entries.emplace_back (); |
670 | linetable_entry &e = subfile->line_vector_entries.back (); | |
671 | e.line = line; | |
672 | e.is_stmt = (flags & LEF_IS_STMT) != 0; | |
1acc9dca | 673 | e.set_raw_pc (pc); |
558802e4 | 674 | e.prologue_end = (flags & LEF_PROLOGUE_END) != 0; |
c906108c SS |
675 | } |
676 | ||
c906108c | 677 | \f |
59dfe8ad | 678 | /* Subroutine of end_compunit_symtab to simplify it. Look for a subfile that |
4a64f543 MS |
679 | matches the main source file's basename. If there is only one, and |
680 | if the main source file doesn't have any symbol or line number | |
681 | information, then copy this file's symtab and line_vector to the | |
682 | main source file's subfile and discard the other subfile. This can | |
683 | happen because of a compiler bug or from the user playing games | |
684 | with #line or from things like a distributed build system that | |
43f3e411 DE |
685 | manipulates the debug info. This can also happen from an innocent |
686 | symlink in the paths, we don't canonicalize paths here. */ | |
4584e32e | 687 | |
4a2125f5 TT |
688 | void |
689 | buildsym_compunit::watch_main_source_file_lossage () | |
4584e32e | 690 | { |
43f3e411 | 691 | struct subfile *mainsub, *subfile; |
4584e32e | 692 | |
43f3e411 | 693 | /* Get the main source file. */ |
cbb09508 | 694 | mainsub = m_main_subfile; |
43f3e411 | 695 | |
4a64f543 | 696 | /* If the main source file doesn't have any line number or symbol |
7bab9b58 | 697 | info, look for an alias in another subfile. */ |
4584e32e | 698 | |
558802e4 | 699 | if (mainsub->line_vector_entries.empty () |
43f3e411 | 700 | && mainsub->symtab == NULL) |
4584e32e | 701 | { |
ebd4e6d0 | 702 | const char *mainbase = lbasename (mainsub->name.c_str ()); |
4584e32e DE |
703 | int nr_matches = 0; |
704 | struct subfile *prevsub; | |
705 | struct subfile *mainsub_alias = NULL; | |
706 | struct subfile *prev_mainsub_alias = NULL; | |
707 | ||
708 | prevsub = NULL; | |
cbb09508 | 709 | for (subfile = m_subfiles; |
43f3e411 | 710 | subfile != NULL; |
4584e32e DE |
711 | subfile = subfile->next) |
712 | { | |
43f3e411 DE |
713 | if (subfile == mainsub) |
714 | continue; | |
ebd4e6d0 | 715 | if (filename_cmp (lbasename (subfile->name.c_str ()), mainbase) == 0) |
4584e32e DE |
716 | { |
717 | ++nr_matches; | |
718 | mainsub_alias = subfile; | |
719 | prev_mainsub_alias = prevsub; | |
720 | } | |
721 | prevsub = subfile; | |
722 | } | |
723 | ||
724 | if (nr_matches == 1) | |
725 | { | |
43f3e411 | 726 | gdb_assert (mainsub_alias != NULL && mainsub_alias != mainsub); |
4584e32e DE |
727 | |
728 | /* Found a match for the main source file. | |
729 | Copy its line_vector and symtab to the main subfile | |
730 | and then discard it. */ | |
731 | ||
80affb9f SM |
732 | symtab_create_debug_printf ("using subfile %s as the main subfile", |
733 | mainsub_alias->name.c_str ()); | |
734 | ||
558802e4 SM |
735 | mainsub->line_vector_entries |
736 | = std::move (mainsub_alias->line_vector_entries); | |
43f3e411 | 737 | mainsub->symtab = mainsub_alias->symtab; |
4584e32e DE |
738 | |
739 | if (prev_mainsub_alias == NULL) | |
cbb09508 | 740 | m_subfiles = mainsub_alias->next; |
4584e32e DE |
741 | else |
742 | prev_mainsub_alias->next = mainsub_alias->next; | |
71bc95ed SM |
743 | |
744 | delete mainsub_alias; | |
4584e32e DE |
745 | } |
746 | } | |
747 | } | |
748 | ||
59dfe8ad SM |
749 | /* Implementation of the first part of end_compunit_symtab. It allows modifying |
750 | STATIC_BLOCK before it gets finalized by | |
751 | end_compunit_symtab_from_static_block. If the returned value is NULL there | |
752 | is no blockvector created for this symtab (you still must call | |
753 | end_compunit_symtab_from_static_block). | |
c906108c | 754 | |
59dfe8ad SM |
755 | END_ADDR is the same as for end_compunit_symtab: the address of the end of |
756 | the file's text. | |
c906108c | 757 | |
4359dff1 | 758 | If EXPANDABLE is non-zero the STATIC_BLOCK dictionary is made |
36586728 TT |
759 | expandable. |
760 | ||
761 | If REQUIRED is non-zero, then a symtab is created even if it does | |
762 | not contain any symbols. */ | |
6d30eef8 | 763 | |
4359dff1 | 764 | struct block * |
59dfe8ad SM |
765 | buildsym_compunit::end_compunit_symtab_get_static_block (CORE_ADDR end_addr, |
766 | int expandable, | |
767 | int required) | |
c906108c | 768 | { |
c906108c SS |
769 | /* Finish the lexical context of the last function in the file; pop |
770 | the context stack. */ | |
771 | ||
4a2125f5 | 772 | if (!m_context_stack.empty ()) |
c906108c | 773 | { |
a60f3166 | 774 | struct context_stack cstk = pop_context (); |
4359dff1 | 775 | |
c906108c | 776 | /* Make a block for the local symbols within. */ |
c233e9c6 | 777 | finish_block (cstk.name, cstk.old_blocks, NULL, |
a60f3166 | 778 | cstk.start_addr, end_addr); |
c906108c | 779 | |
4a2125f5 | 780 | if (!m_context_stack.empty ()) |
c906108c SS |
781 | { |
782 | /* This is said to happen with SCO. The old coffread.c | |
783 | code simply emptied the context stack, so we do the | |
784 | same. FIXME: Find out why it is happening. This is not | |
785 | believed to happen in most cases (even for coffread.c); | |
786 | it used to be an abort(). */ | |
59dfe8ad | 787 | complaint (_("Context stack not empty in end_compunit_symtab")); |
4a2125f5 | 788 | m_context_stack.clear (); |
c906108c SS |
789 | } |
790 | } | |
791 | ||
100e3935 TT |
792 | /* Executables may have out of order pending blocks; sort the |
793 | pending blocks. */ | |
794 | if (m_pending_blocks != nullptr) | |
c906108c | 795 | { |
07e7f39f | 796 | struct pending_block *pb; |
c906108c | 797 | |
b05628f0 | 798 | std::vector<block *> barray; |
c906108c | 799 | |
4a2125f5 | 800 | for (pb = m_pending_blocks; pb != NULL; pb = pb->next) |
b05628f0 | 801 | barray.push_back (pb->block); |
07e7f39f | 802 | |
5033013f UW |
803 | /* Sort blocks by start address in descending order. Blocks with the |
804 | same start address must remain in the original order to preserve | |
805 | inline function caller/callee relationships. */ | |
806 | std::stable_sort (barray.begin (), barray.end (), | |
807 | [] (const block *a, const block *b) | |
808 | { | |
4b8791e1 | 809 | return a->start () > b->start (); |
5033013f | 810 | }); |
07e7f39f | 811 | |
b05628f0 | 812 | int i = 0; |
4a2125f5 | 813 | for (pb = m_pending_blocks; pb != NULL; pb = pb->next) |
b05628f0 | 814 | pb->block = barray[i++]; |
c906108c SS |
815 | } |
816 | ||
817 | /* Cleanup any undefined types that have been left hanging around | |
818 | (this needs to be done before the finish_blocks so that | |
819 | file_symbols is still good). | |
c5aa993b | 820 | |
0a0edcd5 | 821 | Both cleanup_undefined_stabs_types and finish_global_stabs are stabs |
c906108c SS |
822 | specific, but harmless for other symbol readers, since on gdb |
823 | startup or when finished reading stabs, the state is set so these | |
824 | are no-ops. FIXME: Is this handled right in case of QUIT? Can | |
825 | we make this cleaner? */ | |
826 | ||
cbb09508 KS |
827 | cleanup_undefined_stabs_types (m_objfile); |
828 | finish_global_stabs (m_objfile); | |
c906108c | 829 | |
36586728 | 830 | if (!required |
4a2125f5 TT |
831 | && m_pending_blocks == NULL |
832 | && m_file_symbols == NULL | |
833 | && m_global_symbols == NULL | |
834 | && !m_have_line_numbers | |
835 | && m_pending_macros == NULL | |
836 | && m_global_using_directives == NULL) | |
c906108c | 837 | { |
4359dff1 JK |
838 | /* Ignore symtabs that have no functions with real debugging info. */ |
839 | return NULL; | |
840 | } | |
841 | else | |
842 | { | |
843 | /* Define the STATIC_BLOCK. */ | |
e148f09d | 844 | return finish_block_internal (NULL, get_file_symbols (), NULL, NULL, |
4a2125f5 | 845 | m_last_source_start_addr, |
2c99ee5c | 846 | end_addr, 0, expandable); |
4359dff1 JK |
847 | } |
848 | } | |
849 | ||
59dfe8ad | 850 | /* Subroutine of end_compunit_symtab_from_static_block to simplify it. |
7bab9b58 | 851 | Handle the "have blockvector" case. |
59dfe8ad SM |
852 | See end_compunit_symtab_from_static_block for a description of the |
853 | arguments. */ | |
7bab9b58 | 854 | |
4a2125f5 | 855 | struct compunit_symtab * |
59dfe8ad | 856 | buildsym_compunit::end_compunit_symtab_with_blockvector |
83bad316 | 857 | (struct block *static_block, int expandable) |
4359dff1 | 858 | { |
cbb09508 | 859 | struct compunit_symtab *cu = m_compunit_symtab; |
4359dff1 JK |
860 | struct blockvector *blockvector; |
861 | struct subfile *subfile; | |
7bab9b58 | 862 | CORE_ADDR end_addr; |
4359dff1 | 863 | |
7bab9b58 | 864 | gdb_assert (static_block != NULL); |
cbb09508 | 865 | gdb_assert (m_subfiles != NULL); |
7bab9b58 | 866 | |
4b8791e1 | 867 | end_addr = static_block->end (); |
7bab9b58 DE |
868 | |
869 | /* Create the GLOBAL_BLOCK and build the blockvector. */ | |
e148f09d | 870 | finish_block_internal (NULL, get_global_symbols (), NULL, NULL, |
4a2125f5 | 871 | m_last_source_start_addr, end_addr, |
7bab9b58 | 872 | 1, expandable); |
43f3e411 | 873 | blockvector = make_blockvector (); |
c906108c | 874 | |
f56ce883 DE |
875 | /* Read the line table if it has to be read separately. |
876 | This is only used by xcoffread.c. */ | |
cbb09508 KS |
877 | if (m_objfile->sf->sym_read_linetable != NULL) |
878 | m_objfile->sf->sym_read_linetable (m_objfile); | |
c906108c | 879 | |
4584e32e DE |
880 | /* Handle the case where the debug info specifies a different path |
881 | for the main source file. It can cause us to lose track of its | |
882 | line number information. */ | |
883 | watch_main_source_file_lossage (); | |
884 | ||
43f3e411 DE |
885 | /* Now create the symtab objects proper, if not already done, |
886 | one for each subfile. */ | |
c906108c | 887 | |
cbb09508 | 888 | for (subfile = m_subfiles; |
43f3e411 DE |
889 | subfile != NULL; |
890 | subfile = subfile->next) | |
c906108c | 891 | { |
558802e4 | 892 | if (!subfile->line_vector_entries.empty ()) |
c906108c | 893 | { |
100e3935 TT |
894 | /* Like the pending blocks, the line table may be scrambled |
895 | in reordered executables. Sort it. It is important to | |
896 | preserve the order of lines at the same address, as this | |
897 | maintains the inline function caller/callee | |
3d92a3e3 | 898 | relationships, this is why std::stable_sort is used. */ |
100e3935 | 899 | std::stable_sort (subfile->line_vector_entries.begin (), |
6e6ac32d | 900 | subfile->line_vector_entries.end ()); |
7bab9b58 | 901 | } |
9182c5bc | 902 | |
7bab9b58 DE |
903 | /* Allocate a symbol table if necessary. */ |
904 | if (subfile->symtab == NULL) | |
f71ad555 SM |
905 | subfile->symtab = allocate_symtab (cu, subfile->name.c_str (), |
906 | subfile->name_for_id.c_str ()); | |
ebd4e6d0 | 907 | |
5accd1a0 | 908 | struct symtab *symtab = subfile->symtab; |
9182c5bc | 909 | |
7bab9b58 | 910 | /* Fill in its components. */ |
43f3e411 | 911 | |
558802e4 | 912 | if (!subfile->line_vector_entries.empty ()) |
7bab9b58 | 913 | { |
558802e4 SM |
914 | /* Reallocate the line table on the objfile obstack. */ |
915 | size_t n_entries = subfile->line_vector_entries.size (); | |
916 | size_t entry_array_size = n_entries * sizeof (struct linetable_entry); | |
917 | int linetablesize = sizeof (struct linetable) + entry_array_size; | |
918 | ||
5b607461 | 919 | symtab->set_linetable |
558802e4 SM |
920 | (XOBNEWVAR (&m_objfile->objfile_obstack, struct linetable, |
921 | linetablesize)); | |
922 | ||
923 | symtab->linetable ()->nitems = n_entries; | |
924 | memcpy (symtab->linetable ()->item, | |
925 | subfile->line_vector_entries.data (), entry_array_size); | |
c906108c | 926 | } |
24be086d | 927 | else |
5b607461 | 928 | symtab->set_linetable (nullptr); |
c906108c | 929 | |
7bab9b58 DE |
930 | /* Use whatever language we have been using for this |
931 | subfile, not the one that was deduced in allocate_symtab | |
932 | from the filename. We already did our own deducing when | |
933 | we created the subfile, and we may have altered our | |
934 | opinion of what language it is from things we found in | |
935 | the symbols. */ | |
1ee2e9f9 | 936 | symtab->set_language (subfile->language); |
43f3e411 | 937 | } |
c906108c | 938 | |
36664835 SM |
939 | /* Make sure the filetab of main_subfile is the primary filetab of the CU. */ |
940 | cu->set_primary_filetab (m_main_subfile->symtab); | |
84a146c9 | 941 | |
0ab9ce85 | 942 | /* Fill out the compunit symtab. */ |
84a146c9 | 943 | |
ebd4e6d0 | 944 | if (!m_comp_dir.empty ()) |
43f3e411 DE |
945 | { |
946 | /* Reallocate the dirname on the symbol obstack. */ | |
0d9acb45 | 947 | cu->set_dirname (obstack_strdup (&m_objfile->objfile_obstack, |
ebd4e6d0 | 948 | m_comp_dir.c_str ())); |
c906108c SS |
949 | } |
950 | ||
43f3e411 | 951 | /* Save the debug format string (if any) in the symtab. */ |
422f1ea2 | 952 | cu->set_debugformat (m_debugformat); |
43f3e411 DE |
953 | |
954 | /* Similarly for the producer. */ | |
ab5f850e | 955 | cu->set_producer (m_producer); |
43f3e411 | 956 | |
af39c5c8 | 957 | cu->set_blockvector (blockvector); |
7bab9b58 | 958 | { |
63d609de | 959 | struct block *b = blockvector->global_block (); |
cb1df416 | 960 | |
cade9c8a | 961 | b->set_compunit_symtab (cu); |
7bab9b58 | 962 | } |
cb1df416 | 963 | |
10cc645b | 964 | cu->set_macro_table (release_macros ()); |
43f3e411 | 965 | |
7bab9b58 DE |
966 | /* Default any symbols without a specified symtab to the primary symtab. */ |
967 | { | |
968 | int block_i; | |
969 | ||
43f3e411 | 970 | /* The main source file's symtab. */ |
510860f2 | 971 | struct symtab *symtab = cu->primary_filetab (); |
43f3e411 | 972 | |
63d609de | 973 | for (block_i = 0; block_i < blockvector->num_blocks (); block_i++) |
7bab9b58 | 974 | { |
63d609de | 975 | struct block *block = blockvector->block (block_i); |
7bab9b58 | 976 | struct symbol *sym; |
b026f593 | 977 | struct mdict_iterator miter; |
7bab9b58 DE |
978 | |
979 | /* Inlined functions may have symbols not in the global or | |
980 | static symbol lists. */ | |
6c00f721 SM |
981 | if (block->function () != nullptr |
982 | && block->function ()->symtab () == nullptr) | |
983 | block->function ()->set_symtab (symtab); | |
7bab9b58 DE |
984 | |
985 | /* Note that we only want to fix up symbols from the local | |
986 | blocks, not blocks coming from included symtabs. That is why | |
548a89df | 987 | we use ALL_DICT_SYMBOLS here and not a block iterator. */ |
24d74bb5 | 988 | ALL_DICT_SYMBOLS (block->multidict (), miter, sym) |
4206d69e TT |
989 | if (sym->symtab () == NULL) |
990 | sym->set_symtab (symtab); | |
7bab9b58 DE |
991 | } |
992 | } | |
edb3359d | 993 | |
43f3e411 | 994 | add_compunit_symtab_to_objfile (cu); |
43f3e411 DE |
995 | |
996 | return cu; | |
7bab9b58 DE |
997 | } |
998 | ||
59dfe8ad SM |
999 | /* Implementation of the second part of end_compunit_symtab. Pass STATIC_BLOCK |
1000 | as value returned by end_compunit_symtab_get_static_block. | |
7bab9b58 | 1001 | |
7bab9b58 DE |
1002 | If EXPANDABLE is non-zero the GLOBAL_BLOCK dictionary is made |
1003 | expandable. */ | |
1004 | ||
43f3e411 | 1005 | struct compunit_symtab * |
59dfe8ad | 1006 | buildsym_compunit::end_compunit_symtab_from_static_block |
83bad316 | 1007 | (struct block *static_block, int expandable) |
7bab9b58 | 1008 | { |
43f3e411 | 1009 | struct compunit_symtab *cu; |
7bab9b58 DE |
1010 | |
1011 | if (static_block == NULL) | |
1012 | { | |
0ab9ce85 DE |
1013 | /* Handle the "no blockvector" case. |
1014 | When this happens there is nothing to record, so there's nothing | |
1015 | to do: memory will be freed up later. | |
1016 | ||
1017 | Note: We won't be adding a compunit to the objfile's list of | |
1018 | compunits, so there's nothing to unchain. However, since each symtab | |
1019 | is added to the objfile's obstack we can't free that space. | |
1020 | We could do better, but this is believed to be a sufficiently rare | |
1021 | event. */ | |
43f3e411 | 1022 | cu = NULL; |
7bab9b58 DE |
1023 | } |
1024 | else | |
83bad316 | 1025 | cu = end_compunit_symtab_with_blockvector (static_block, expandable); |
cb1df416 | 1026 | |
43f3e411 | 1027 | return cu; |
6d30eef8 DE |
1028 | } |
1029 | ||
4359dff1 JK |
1030 | /* Finish the symbol definitions for one main source file, close off |
1031 | all the lexical contexts for that file (creating struct block's for | |
1032 | them), then make the struct symtab for that file and put it in the | |
1033 | list of all such. | |
1034 | ||
83bad316 | 1035 | END_ADDR is the address of the end of the file's text. |
4359dff1 | 1036 | |
59dfe8ad | 1037 | Note that it is possible for end_compunit_symtab() to return NULL. In |
4359dff1 JK |
1038 | particular, for the DWARF case at least, it will return NULL when |
1039 | it finds a compilation unit that has exactly one DIE, a | |
1040 | TAG_compile_unit DIE. This can happen when we link in an object | |
1041 | file that was compiled from an empty source file. Returning NULL | |
1042 | is probably not the correct thing to do, because then gdb will | |
1043 | never know about this empty file (FIXME). | |
1044 | ||
1045 | If you need to modify STATIC_BLOCK before it is finalized you should | |
59dfe8ad SM |
1046 | call end_compunit_symtab_get_static_block and |
1047 | end_compunit_symtab_from_static_block yourself. */ | |
6d30eef8 | 1048 | |
43f3e411 | 1049 | struct compunit_symtab * |
83bad316 | 1050 | buildsym_compunit::end_compunit_symtab (CORE_ADDR end_addr) |
6d30eef8 | 1051 | { |
4359dff1 JK |
1052 | struct block *static_block; |
1053 | ||
59dfe8ad | 1054 | static_block = end_compunit_symtab_get_static_block (end_addr, 0, 0); |
83bad316 | 1055 | return end_compunit_symtab_from_static_block (static_block, 0); |
6d30eef8 DE |
1056 | } |
1057 | ||
59dfe8ad SM |
1058 | /* Same as end_compunit_symtab except create a symtab that can be later added |
1059 | to. */ | |
6d30eef8 | 1060 | |
43f3e411 | 1061 | struct compunit_symtab * |
83bad316 | 1062 | buildsym_compunit::end_expandable_symtab (CORE_ADDR end_addr) |
6d30eef8 | 1063 | { |
4359dff1 JK |
1064 | struct block *static_block; |
1065 | ||
59dfe8ad | 1066 | static_block = end_compunit_symtab_get_static_block (end_addr, 1, 0); |
83bad316 | 1067 | return end_compunit_symtab_from_static_block (static_block, 1); |
6d30eef8 DE |
1068 | } |
1069 | ||
1070 | /* Subroutine of augment_type_symtab to simplify it. | |
43f3e411 DE |
1071 | Attach the main source file's symtab to all symbols in PENDING_LIST that |
1072 | don't have one. */ | |
6d30eef8 DE |
1073 | |
1074 | static void | |
43f3e411 DE |
1075 | set_missing_symtab (struct pending *pending_list, |
1076 | struct compunit_symtab *cu) | |
6d30eef8 DE |
1077 | { |
1078 | struct pending *pending; | |
1079 | int i; | |
1080 | ||
1081 | for (pending = pending_list; pending != NULL; pending = pending->next) | |
801e3a5b | 1082 | { |
6d30eef8 DE |
1083 | for (i = 0; i < pending->nsyms; ++i) |
1084 | { | |
4206d69e TT |
1085 | if (pending->symbol[i]->symtab () == NULL) |
1086 | pending->symbol[i]->set_symtab (cu->primary_filetab ()); | |
6d30eef8 | 1087 | } |
801e3a5b | 1088 | } |
6d30eef8 | 1089 | } |
c906108c | 1090 | |
59dfe8ad | 1091 | /* Same as end_compunit_symtab, but for the case where we're adding more symbols |
6d30eef8 DE |
1092 | to an existing symtab that is known to contain only type information. |
1093 | This is the case for DWARF4 Type Units. */ | |
1094 | ||
1095 | void | |
4a2125f5 | 1096 | buildsym_compunit::augment_type_symtab () |
6d30eef8 | 1097 | { |
cbb09508 | 1098 | struct compunit_symtab *cust = m_compunit_symtab; |
63d609de | 1099 | struct blockvector *blockvector = cust->blockvector (); |
6d30eef8 | 1100 | |
4a2125f5 | 1101 | if (!m_context_stack.empty ()) |
a60f3166 | 1102 | complaint (_("Context stack not empty in augment_type_symtab")); |
4a2125f5 | 1103 | if (m_pending_blocks != NULL) |
b98664d3 | 1104 | complaint (_("Blocks in a type symtab")); |
4a2125f5 | 1105 | if (m_pending_macros != NULL) |
b98664d3 | 1106 | complaint (_("Macro in a type symtab")); |
4a2125f5 | 1107 | if (m_have_line_numbers) |
b98664d3 | 1108 | complaint (_("Line numbers recorded in a type symtab")); |
6d30eef8 | 1109 | |
4a2125f5 | 1110 | if (m_file_symbols != NULL) |
6d30eef8 | 1111 | { |
63d609de | 1112 | struct block *block = blockvector->static_block (); |
6d30eef8 DE |
1113 | |
1114 | /* First mark any symbols without a specified symtab as belonging | |
1115 | to the primary symtab. */ | |
4a2125f5 | 1116 | set_missing_symtab (m_file_symbols, cust); |
6d30eef8 | 1117 | |
24d74bb5 | 1118 | mdict_add_pending (block->multidict (), m_file_symbols); |
6d30eef8 DE |
1119 | } |
1120 | ||
4a2125f5 | 1121 | if (m_global_symbols != NULL) |
6d30eef8 | 1122 | { |
63d609de | 1123 | struct block *block = blockvector->global_block (); |
6d30eef8 DE |
1124 | |
1125 | /* First mark any symbols without a specified symtab as belonging | |
1126 | to the primary symtab. */ | |
4a2125f5 | 1127 | set_missing_symtab (m_global_symbols, cust); |
6d30eef8 | 1128 | |
24d74bb5 | 1129 | mdict_add_pending (block->multidict (), m_global_symbols); |
6d30eef8 | 1130 | } |
c906108c SS |
1131 | } |
1132 | ||
1133 | /* Push a context block. Args are an identifying nesting level | |
1134 | (checkable when you pop it), and the starting PC address of this | |
1135 | context. */ | |
1136 | ||
1137 | struct context_stack * | |
4a2125f5 | 1138 | buildsym_compunit::push_context (int desc, CORE_ADDR valu) |
c906108c | 1139 | { |
4a2125f5 TT |
1140 | m_context_stack.emplace_back (); |
1141 | struct context_stack *newobj = &m_context_stack.back (); | |
c906108c | 1142 | |
fe978cb0 | 1143 | newobj->depth = desc; |
4a2125f5 TT |
1144 | newobj->locals = m_local_symbols; |
1145 | newobj->old_blocks = m_pending_blocks; | |
fe978cb0 | 1146 | newobj->start_addr = valu; |
4a2125f5 | 1147 | newobj->local_using_directives = m_local_using_directives; |
fe978cb0 | 1148 | newobj->name = NULL; |
c906108c | 1149 | |
4a2125f5 TT |
1150 | m_local_symbols = NULL; |
1151 | m_local_using_directives = NULL; | |
c906108c | 1152 | |
fe978cb0 | 1153 | return newobj; |
c906108c | 1154 | } |
0c5e171a | 1155 | |
a672ef13 | 1156 | /* Pop a context block. Returns the address of the context block just |
4a64f543 | 1157 | popped. */ |
a672ef13 | 1158 | |
a60f3166 | 1159 | struct context_stack |
4a2125f5 | 1160 | buildsym_compunit::pop_context () |
0c5e171a | 1161 | { |
4a2125f5 TT |
1162 | gdb_assert (!m_context_stack.empty ()); |
1163 | struct context_stack result = m_context_stack.back (); | |
1164 | m_context_stack.pop_back (); | |
a60f3166 | 1165 | return result; |
0c5e171a | 1166 | } |