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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 | |
84a146c9 | 214 | block = (is_global |
cbb09508 KS |
215 | ? allocate_global_block (&m_objfile->objfile_obstack) |
216 | : allocate_block (&m_objfile->objfile_obstack)); | |
c906108c | 217 | |
261397f8 DJ |
218 | if (symbol) |
219 | { | |
24d74bb5 SM |
220 | block->set_multidict |
221 | (mdict_create_linear (&m_objfile->objfile_obstack, *listhead)); | |
261397f8 DJ |
222 | } |
223 | else | |
c906108c | 224 | { |
6d30eef8 DE |
225 | if (expandable) |
226 | { | |
24d74bb5 SM |
227 | block->set_multidict |
228 | (mdict_create_hashed_expandable (m_language)); | |
229 | mdict_add_pending (block->multidict (), *listhead); | |
6d30eef8 DE |
230 | } |
231 | else | |
232 | { | |
24d74bb5 SM |
233 | block->set_multidict |
234 | (mdict_create_hashed (&m_objfile->objfile_obstack, *listhead)); | |
6d30eef8 | 235 | } |
c906108c SS |
236 | } |
237 | ||
4b8791e1 SM |
238 | block->set_start (start); |
239 | block->set_end (end); | |
c906108c | 240 | |
c906108c SS |
241 | /* Put the block in as the value of the symbol that names it. */ |
242 | ||
243 | if (symbol) | |
244 | { | |
5f9c5a63 | 245 | struct type *ftype = symbol->type (); |
b026f593 | 246 | struct mdict_iterator miter; |
4aeddc50 | 247 | symbol->set_value_block (block); |
5abbfa98 | 248 | symbol->set_section_index (SECT_OFF_TEXT (m_objfile)); |
6c00f721 | 249 | block->set_function (symbol); |
c906108c | 250 | |
1f704f76 | 251 | if (ftype->num_fields () <= 0) |
c906108c SS |
252 | { |
253 | /* No parameter type information is recorded with the | |
254 | function's type. Set that from the type of the | |
4a64f543 | 255 | parameter symbols. */ |
c906108c SS |
256 | int nparams = 0, iparams; |
257 | struct symbol *sym; | |
8157b174 TT |
258 | |
259 | /* Here we want to directly access the dictionary, because | |
260 | we haven't fully initialized the block yet. */ | |
24d74bb5 | 261 | ALL_DICT_SYMBOLS (block->multidict (), miter, sym) |
c906108c | 262 | { |
d9743061 | 263 | if (sym->is_argument ()) |
2a2d4dc3 | 264 | nparams++; |
c906108c SS |
265 | } |
266 | if (nparams > 0) | |
267 | { | |
5e33d5f4 | 268 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
269 | ftype->set_fields |
270 | ((struct field *) | |
271 | TYPE_ALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 272 | |
de4f826b | 273 | iparams = 0; |
8157b174 TT |
274 | /* Here we want to directly access the dictionary, because |
275 | we haven't fully initialized the block yet. */ | |
24d74bb5 | 276 | ALL_DICT_SYMBOLS (block->multidict (), miter, sym) |
c906108c | 277 | { |
de4f826b DC |
278 | if (iparams == nparams) |
279 | break; | |
280 | ||
d9743061 | 281 | if (sym->is_argument ()) |
c906108c | 282 | { |
5f9c5a63 | 283 | ftype->field (iparams).set_type (sym->type ()); |
8176bb6d | 284 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c | 285 | iparams++; |
c906108c SS |
286 | } |
287 | } | |
288 | } | |
289 | } | |
290 | } | |
291 | else | |
6c00f721 | 292 | block->set_function (nullptr); |
c906108c | 293 | |
63e43d3a | 294 | if (static_link != NULL) |
cbb09508 | 295 | objfile_register_static_link (m_objfile, block, static_link); |
63e43d3a | 296 | |
1d376700 | 297 | /* Now free the links of the list, and empty the list. */ |
c906108c SS |
298 | |
299 | for (next = *listhead; next; next = next1) | |
300 | { | |
301 | next1 = next->next; | |
1d376700 | 302 | xfree (next); |
c906108c SS |
303 | } |
304 | *listhead = NULL; | |
305 | ||
c906108c | 306 | /* Check to be sure that the blocks have an end address that is |
4a64f543 | 307 | greater than starting address. */ |
c906108c | 308 | |
4b8791e1 | 309 | if (block->end () < block->start ()) |
c906108c SS |
310 | { |
311 | if (symbol) | |
312 | { | |
b98664d3 | 313 | complaint (_("block end address less than block " |
3e43a32a | 314 | "start address in %s (patched it)"), |
987012b8 | 315 | symbol->print_name ()); |
c906108c SS |
316 | } |
317 | else | |
318 | { | |
b98664d3 | 319 | complaint (_("block end address %s less than block " |
3e43a32a | 320 | "start address %s (patched it)"), |
4b8791e1 SM |
321 | paddress (gdbarch, block->end ()), |
322 | paddress (gdbarch, block->start ())); | |
c906108c | 323 | } |
4a64f543 | 324 | /* Better than nothing. */ |
4b8791e1 | 325 | block->set_end (block->start ()); |
c906108c | 326 | } |
c906108c SS |
327 | |
328 | /* Install this block as the superblock of all blocks made since the | |
329 | start of this scope that don't have superblocks yet. */ | |
330 | ||
331 | opblock = NULL; | |
4a2125f5 | 332 | for (pblock = m_pending_blocks; |
c0219d42 MS |
333 | pblock && pblock != old_blocks; |
334 | pblock = pblock->next) | |
c906108c | 335 | { |
f135fe72 | 336 | if (pblock->block->superblock () == NULL) |
c906108c | 337 | { |
c906108c | 338 | /* Check to be sure the blocks are nested as we receive |
4a64f543 | 339 | them. If the compiler/assembler/linker work, this just |
14711c82 DJ |
340 | burns a small amount of time. |
341 | ||
342 | Skip blocks which correspond to a function; they're not | |
343 | physically nested inside this other blocks, only | |
344 | lexically nested. */ | |
6c00f721 | 345 | if (pblock->block->function () == NULL |
4b8791e1 SM |
346 | && (pblock->block->start () < block->start () |
347 | || pblock->block->end () > block->end ())) | |
c906108c SS |
348 | { |
349 | if (symbol) | |
350 | { | |
b98664d3 | 351 | complaint (_("inner block not inside outer block in %s"), |
987012b8 | 352 | symbol->print_name ()); |
c906108c SS |
353 | } |
354 | else | |
355 | { | |
b98664d3 | 356 | complaint (_("inner block (%s-%s) not " |
3e43a32a | 357 | "inside outer block (%s-%s)"), |
4b8791e1 SM |
358 | paddress (gdbarch, pblock->block->start ()), |
359 | paddress (gdbarch, pblock->block->end ()), | |
360 | paddress (gdbarch, block->start ()), | |
361 | paddress (gdbarch, block->end ())); | |
c906108c | 362 | } |
4b8791e1 SM |
363 | |
364 | if (pblock->block->start () < block->start ()) | |
365 | pblock->block->set_start (block->start ()); | |
366 | ||
367 | if (pblock->block->end () > block->end ()) | |
368 | pblock->block->set_end (block->end ()); | |
c906108c | 369 | } |
f135fe72 | 370 | pblock->block->set_superblock (block); |
c906108c SS |
371 | } |
372 | opblock = pblock; | |
373 | } | |
374 | ||
3c45e9f9 TT |
375 | block->set_using ((is_global |
376 | ? m_global_using_directives | |
377 | : m_local_using_directives), | |
378 | &m_objfile->objfile_obstack); | |
22cee43f | 379 | if (is_global) |
4a2125f5 | 380 | m_global_using_directives = NULL; |
22cee43f | 381 | else |
4a2125f5 | 382 | m_local_using_directives = NULL; |
27aa8d6a | 383 | |
6b213a47 | 384 | record_pending_block (block, opblock); |
801e3a5b JB |
385 | |
386 | return block; | |
c906108c SS |
387 | } |
388 | ||
84a146c9 | 389 | struct block * |
4a2125f5 TT |
390 | buildsym_compunit::finish_block (struct symbol *symbol, |
391 | struct pending_block *old_blocks, | |
392 | const struct dynamic_prop *static_link, | |
393 | CORE_ADDR start, CORE_ADDR end) | |
84a146c9 | 394 | { |
4a2125f5 TT |
395 | return finish_block_internal (symbol, &m_local_symbols, |
396 | old_blocks, static_link, start, end, 0, 0); | |
84a146c9 | 397 | } |
de4f826b | 398 | |
801e3a5b JB |
399 | /* Record that the range of addresses from START to END_INCLUSIVE |
400 | (inclusive, like it says) belongs to BLOCK. BLOCK's start and end | |
401 | addresses must be set already. You must apply this function to all | |
402 | BLOCK's children before applying it to BLOCK. | |
403 | ||
404 | If a call to this function complicates the picture beyond that | |
405 | already provided by BLOCK_START and BLOCK_END, then we create an | |
406 | address map for the block. */ | |
407 | void | |
4a2125f5 TT |
408 | buildsym_compunit::record_block_range (struct block *block, |
409 | CORE_ADDR start, | |
410 | CORE_ADDR end_inclusive) | |
801e3a5b JB |
411 | { |
412 | /* If this is any different from the range recorded in the block's | |
413 | own BLOCK_START and BLOCK_END, then note that the address map has | |
414 | become interesting. Note that even if this block doesn't have | |
415 | any "interesting" ranges, some later block might, so we still | |
416 | need to record this block in the addrmap. */ | |
4b8791e1 SM |
417 | if (start != block->start () |
418 | || end_inclusive + 1 != block->end ()) | |
4a2125f5 | 419 | m_pending_addrmap_interesting = true; |
801e3a5b | 420 | |
93b527ef | 421 | m_pending_addrmap.set_empty (start, end_inclusive, block); |
801e3a5b JB |
422 | } |
423 | ||
4a2125f5 TT |
424 | struct blockvector * |
425 | buildsym_compunit::make_blockvector () | |
c906108c | 426 | { |
52f0bd74 AC |
427 | struct pending_block *next; |
428 | struct blockvector *blockvector; | |
429 | int i; | |
c906108c SS |
430 | |
431 | /* Count the length of the list of blocks. */ | |
432 | ||
4a2125f5 | 433 | for (next = m_pending_blocks, i = 0; next; next = next->next, i++) |
5ac04550 | 434 | { |
c906108c SS |
435 | } |
436 | ||
437 | blockvector = (struct blockvector *) | |
cbb09508 | 438 | obstack_alloc (&m_objfile->objfile_obstack, |
c906108c SS |
439 | (sizeof (struct blockvector) |
440 | + (i - 1) * sizeof (struct block *))); | |
441 | ||
4a64f543 | 442 | /* Copy the blocks into the blockvector. This is done in reverse |
c906108c | 443 | order, which happens to put the blocks into the proper order |
4a64f543 | 444 | (ascending starting address). finish_block has hair to insert |
c906108c SS |
445 | each block into the list after its subblocks in order to make |
446 | sure this is true. */ | |
447 | ||
63d609de | 448 | blockvector->set_num_blocks (i); |
4a2125f5 | 449 | for (next = m_pending_blocks; next; next = next->next) |
63d609de | 450 | blockvector->set_block (--i, next->block); |
c906108c | 451 | |
4a2125f5 | 452 | free_pending_blocks (); |
c906108c | 453 | |
801e3a5b JB |
454 | /* If we needed an address map for this symtab, record it in the |
455 | blockvector. */ | |
93b527ef | 456 | if (m_pending_addrmap_interesting) |
414705d1 | 457 | blockvector->set_map |
d89120e9 | 458 | (new (&m_objfile->objfile_obstack) addrmap_fixed |
93b527ef | 459 | (&m_objfile->objfile_obstack, &m_pending_addrmap)); |
801e3a5b | 460 | else |
414705d1 | 461 | blockvector->set_map (nullptr); |
4aad0dfc | 462 | |
c906108c | 463 | /* Some compilers output blocks in the wrong order, but we depend on |
4a64f543 | 464 | their being in the right order so we can binary search. Check the |
4aad0dfc DE |
465 | order and moan about it. |
466 | Note: Remember that the first two blocks are the global and static | |
467 | blocks. We could special case that fact and begin checking at block 2. | |
468 | To avoid making that assumption we do not. */ | |
63d609de | 469 | if (blockvector->num_blocks () > 1) |
c906108c | 470 | { |
63d609de | 471 | for (i = 1; i < blockvector->num_blocks (); i++) |
c906108c | 472 | { |
63d609de SM |
473 | if (blockvector->block (i - 1)->start () |
474 | > blockvector->block (i)->start ()) | |
c906108c | 475 | { |
59527da0 | 476 | CORE_ADDR start |
63d609de | 477 | = blockvector->block (i)->start (); |
c906108c | 478 | |
b98664d3 | 479 | complaint (_("block at %s out of order"), |
bb599908 | 480 | hex_string ((LONGEST) start)); |
c906108c SS |
481 | } |
482 | } | |
483 | } | |
c906108c SS |
484 | |
485 | return (blockvector); | |
486 | } | |
f71ad555 SM |
487 | |
488 | /* See buildsym.h. */ | |
c906108c SS |
489 | |
490 | void | |
f71ad555 | 491 | buildsym_compunit::start_subfile (const char *name, const char *name_for_id) |
c906108c | 492 | { |
43f3e411 DE |
493 | /* See if this subfile is already registered. */ |
494 | ||
f71ad555 | 495 | symtab_create_debug_printf ("name = %s, name_for_id = %s", name, name_for_id); |
80affb9f | 496 | |
71bc95ed | 497 | for (subfile *subfile = m_subfiles; subfile; subfile = subfile->next) |
ee26d001 SM |
498 | if (FILENAME_CMP (subfile->name_for_id.c_str (), name_for_id) == 0) |
499 | { | |
500 | symtab_create_debug_printf ("found existing symtab with name_for_id %s", | |
501 | subfile->name_for_id.c_str ()); | |
502 | m_current_subfile = subfile; | |
503 | return; | |
504 | } | |
c906108c | 505 | |
43f3e411 | 506 | /* This subfile is not known. Add an entry for it. */ |
c906108c | 507 | |
71bc95ed | 508 | subfile_up subfile (new struct subfile); |
ebd4e6d0 | 509 | subfile->name = name; |
f71ad555 | 510 | subfile->name_for_id = name_for_id; |
43f3e411 | 511 | |
71bc95ed | 512 | m_current_subfile = subfile.get (); |
c906108c | 513 | |
c906108c SS |
514 | /* Default the source language to whatever can be deduced from the |
515 | filename. If nothing can be deduced (such as for a C/C++ include | |
516 | file with a ".h" extension), then inherit whatever language the | |
517 | previous subfile had. This kludgery is necessary because there | |
518 | is no standard way in some object formats to record the source | |
519 | language. Also, when symtabs are allocated we try to deduce a | |
520 | language then as well, but it is too late for us to use that | |
521 | information while reading symbols, since symtabs aren't allocated | |
522 | until after all the symbols have been processed for a given | |
4a64f543 | 523 | source file. */ |
c906108c | 524 | |
ebd4e6d0 | 525 | subfile->language = deduce_language_from_filename (subfile->name.c_str ()); |
71bc95ed SM |
526 | if (subfile->language == language_unknown && m_subfiles != nullptr) |
527 | subfile->language = m_subfiles->language; | |
c906108c | 528 | |
25caa7a8 | 529 | /* If the filename of this subfile ends in .C, then change the |
c906108c | 530 | language of any pending subfiles from C to C++. We also accept |
25caa7a8 | 531 | any other C++ suffixes accepted by deduce_language_from_filename. */ |
c906108c SS |
532 | /* Likewise for f2c. */ |
533 | ||
ebd4e6d0 | 534 | if (!subfile->name.empty ()) |
c906108c SS |
535 | { |
536 | struct subfile *s; | |
ebd4e6d0 | 537 | language sublang = deduce_language_from_filename (subfile->name.c_str ()); |
c906108c SS |
538 | |
539 | if (sublang == language_cplus || sublang == language_fortran) | |
cbb09508 | 540 | for (s = m_subfiles; s != NULL; s = s->next) |
c906108c SS |
541 | if (s->language == language_c) |
542 | s->language = sublang; | |
543 | } | |
544 | ||
545 | /* And patch up this file if necessary. */ | |
546 | if (subfile->language == language_c | |
71bc95ed SM |
547 | && m_subfiles != nullptr |
548 | && (m_subfiles->language == language_cplus | |
549 | || m_subfiles->language == language_fortran)) | |
550 | subfile->language = m_subfiles->language; | |
551 | ||
552 | /* Link this subfile at the front of the subfile list. */ | |
553 | subfile->next = m_subfiles; | |
554 | m_subfiles = subfile.release (); | |
c906108c SS |
555 | } |
556 | ||
557 | /* For stabs readers, the first N_SO symbol is assumed to be the | |
558 | source file name, and the subfile struct is initialized using that | |
559 | assumption. If another N_SO symbol is later seen, immediately | |
560 | following the first one, then the first one is assumed to be the | |
561 | directory name and the second one is really the source file name. | |
562 | ||
563 | So we have to patch up the subfile struct by moving the old name | |
564 | value to dirname and remembering the new name. Some sanity | |
565 | checking is performed to ensure that the state of the subfile | |
566 | struct is reasonable and that the old name we are assuming to be a | |
4a64f543 | 567 | directory name actually is (by checking for a trailing '/'). */ |
c906108c SS |
568 | |
569 | void | |
4a2125f5 TT |
570 | buildsym_compunit::patch_subfile_names (struct subfile *subfile, |
571 | const char *name) | |
c906108c | 572 | { |
43f3e411 | 573 | if (subfile != NULL |
ebd4e6d0 SM |
574 | && m_comp_dir.empty () |
575 | && !subfile->name.empty () | |
576 | && IS_DIR_SEPARATOR (subfile->name.back ())) | |
c906108c | 577 | { |
ebd4e6d0 SM |
578 | m_comp_dir = std::move (subfile->name); |
579 | subfile->name = name; | |
f71ad555 | 580 | subfile->name_for_id = name; |
46212e0b | 581 | set_last_source_file (name); |
c906108c SS |
582 | |
583 | /* Default the source language to whatever can be deduced from | |
dda83cd7 SM |
584 | the filename. If nothing can be deduced (such as for a C/C++ |
585 | include file with a ".h" extension), then inherit whatever | |
586 | language the previous subfile had. This kludgery is | |
587 | necessary because there is no standard way in some object | |
588 | formats to record the source language. Also, when symtabs | |
589 | are allocated we try to deduce a language then as well, but | |
590 | it is too late for us to use that information while reading | |
591 | symbols, since symtabs aren't allocated until after all the | |
592 | symbols have been processed for a given source file. */ | |
c906108c | 593 | |
ebd4e6d0 SM |
594 | subfile->language |
595 | = deduce_language_from_filename (subfile->name.c_str ()); | |
5aafa1cc PM |
596 | if (subfile->language == language_unknown |
597 | && subfile->next != NULL) | |
c906108c SS |
598 | { |
599 | subfile->language = subfile->next->language; | |
600 | } | |
601 | } | |
602 | } | |
603 | \f | |
604 | /* Handle the N_BINCL and N_EINCL symbol types that act like N_SOL for | |
605 | switching source files (different subfiles, as we call them) within | |
606 | one object file, but using a stack rather than in an arbitrary | |
607 | order. */ | |
608 | ||
609 | void | |
4a2125f5 | 610 | buildsym_compunit::push_subfile () |
c906108c | 611 | { |
4a2125f5 | 612 | gdb_assert (m_current_subfile != NULL); |
ebd4e6d0 SM |
613 | gdb_assert (!m_current_subfile->name.empty ()); |
614 | m_subfile_stack.push_back (m_current_subfile->name.c_str ()); | |
c906108c SS |
615 | } |
616 | ||
8419ee53 | 617 | const char * |
4a2125f5 | 618 | buildsym_compunit::pop_subfile () |
c906108c | 619 | { |
4a2125f5 TT |
620 | gdb_assert (!m_subfile_stack.empty ()); |
621 | const char *name = m_subfile_stack.back (); | |
622 | m_subfile_stack.pop_back (); | |
8419ee53 | 623 | return name; |
c906108c SS |
624 | } |
625 | \f | |
626 | /* Add a linetable entry for line number LINE and address PC to the | |
627 | line vector for SUBFILE. */ | |
628 | ||
629 | void | |
4a2125f5 | 630 | buildsym_compunit::record_line (struct subfile *subfile, int line, |
6cacd78b | 631 | CORE_ADDR pc, linetable_entry_flags flags) |
c906108c | 632 | { |
558802e4 | 633 | m_have_line_numbers = true; |
c906108c | 634 | |
a25198bb BE |
635 | /* Normally, we treat lines as unsorted. But the end of sequence |
636 | marker is special. We sort line markers at the same PC by line | |
637 | number, so end of sequence markers (which have line == 0) appear | |
638 | first. This is right if the marker ends the previous function, | |
639 | and there is no padding before the next function. But it is | |
640 | wrong if the previous line was empty and we are now marking a | |
641 | switch to a different subfile. We must leave the end of sequence | |
642 | marker at the end of this group of lines, not sort the empty line | |
643 | to after the marker. The easiest way to accomplish this is to | |
644 | delete any empty lines from our table, if they are followed by | |
645 | end of sequence markers. All we lose is the ability to set | |
646 | breakpoints at some lines which contain no instructions | |
647 | anyway. */ | |
648 | if (line == 0) | |
607ae575 | 649 | { |
558802e4 SM |
650 | gdb::optional<int> last_line; |
651 | ||
652 | while (!subfile->line_vector_entries.empty ()) | |
607ae575 | 653 | { |
558802e4 SM |
654 | linetable_entry *last = &subfile->line_vector_entries.back (); |
655 | last_line = last->line; | |
656 | ||
e4ad960a | 657 | if (last->pc != pc) |
64dc2d4b | 658 | break; |
558802e4 SM |
659 | |
660 | subfile->line_vector_entries.pop_back (); | |
607ae575 | 661 | } |
e4ad960a TV |
662 | |
663 | /* Ignore an end-of-sequence marker marking an empty sequence. */ | |
558802e4 | 664 | if (!last_line.has_value () || *last_line == 0) |
e4ad960a | 665 | return; |
607ae575 DJ |
666 | } |
667 | ||
558802e4 SM |
668 | subfile->line_vector_entries.emplace_back (); |
669 | linetable_entry &e = subfile->line_vector_entries.back (); | |
670 | e.line = line; | |
671 | e.is_stmt = (flags & LEF_IS_STMT) != 0; | |
672 | e.pc = pc; | |
673 | e.prologue_end = (flags & LEF_PROLOGUE_END) != 0; | |
c906108c SS |
674 | } |
675 | ||
c906108c | 676 | \f |
59dfe8ad | 677 | /* Subroutine of end_compunit_symtab to simplify it. Look for a subfile that |
4a64f543 MS |
678 | matches the main source file's basename. If there is only one, and |
679 | if the main source file doesn't have any symbol or line number | |
680 | information, then copy this file's symtab and line_vector to the | |
681 | main source file's subfile and discard the other subfile. This can | |
682 | happen because of a compiler bug or from the user playing games | |
683 | with #line or from things like a distributed build system that | |
43f3e411 DE |
684 | manipulates the debug info. This can also happen from an innocent |
685 | symlink in the paths, we don't canonicalize paths here. */ | |
4584e32e | 686 | |
4a2125f5 TT |
687 | void |
688 | buildsym_compunit::watch_main_source_file_lossage () | |
4584e32e | 689 | { |
43f3e411 | 690 | struct subfile *mainsub, *subfile; |
4584e32e | 691 | |
43f3e411 | 692 | /* Get the main source file. */ |
cbb09508 | 693 | mainsub = m_main_subfile; |
43f3e411 | 694 | |
4a64f543 | 695 | /* If the main source file doesn't have any line number or symbol |
7bab9b58 | 696 | info, look for an alias in another subfile. */ |
4584e32e | 697 | |
558802e4 | 698 | if (mainsub->line_vector_entries.empty () |
43f3e411 | 699 | && mainsub->symtab == NULL) |
4584e32e | 700 | { |
ebd4e6d0 | 701 | const char *mainbase = lbasename (mainsub->name.c_str ()); |
4584e32e DE |
702 | int nr_matches = 0; |
703 | struct subfile *prevsub; | |
704 | struct subfile *mainsub_alias = NULL; | |
705 | struct subfile *prev_mainsub_alias = NULL; | |
706 | ||
707 | prevsub = NULL; | |
cbb09508 | 708 | for (subfile = m_subfiles; |
43f3e411 | 709 | subfile != NULL; |
4584e32e DE |
710 | subfile = subfile->next) |
711 | { | |
43f3e411 DE |
712 | if (subfile == mainsub) |
713 | continue; | |
ebd4e6d0 | 714 | if (filename_cmp (lbasename (subfile->name.c_str ()), mainbase) == 0) |
4584e32e DE |
715 | { |
716 | ++nr_matches; | |
717 | mainsub_alias = subfile; | |
718 | prev_mainsub_alias = prevsub; | |
719 | } | |
720 | prevsub = subfile; | |
721 | } | |
722 | ||
723 | if (nr_matches == 1) | |
724 | { | |
43f3e411 | 725 | gdb_assert (mainsub_alias != NULL && mainsub_alias != mainsub); |
4584e32e DE |
726 | |
727 | /* Found a match for the main source file. | |
728 | Copy its line_vector and symtab to the main subfile | |
729 | and then discard it. */ | |
730 | ||
80affb9f SM |
731 | symtab_create_debug_printf ("using subfile %s as the main subfile", |
732 | mainsub_alias->name.c_str ()); | |
733 | ||
558802e4 SM |
734 | mainsub->line_vector_entries |
735 | = std::move (mainsub_alias->line_vector_entries); | |
43f3e411 | 736 | mainsub->symtab = mainsub_alias->symtab; |
4584e32e DE |
737 | |
738 | if (prev_mainsub_alias == NULL) | |
cbb09508 | 739 | m_subfiles = mainsub_alias->next; |
4584e32e DE |
740 | else |
741 | prev_mainsub_alias->next = mainsub_alias->next; | |
71bc95ed SM |
742 | |
743 | delete mainsub_alias; | |
4584e32e DE |
744 | } |
745 | } | |
746 | } | |
747 | ||
59dfe8ad SM |
748 | /* Implementation of the first part of end_compunit_symtab. It allows modifying |
749 | STATIC_BLOCK before it gets finalized by | |
750 | end_compunit_symtab_from_static_block. If the returned value is NULL there | |
751 | is no blockvector created for this symtab (you still must call | |
752 | end_compunit_symtab_from_static_block). | |
c906108c | 753 | |
59dfe8ad SM |
754 | END_ADDR is the same as for end_compunit_symtab: the address of the end of |
755 | the file's text. | |
c906108c | 756 | |
4359dff1 | 757 | If EXPANDABLE is non-zero the STATIC_BLOCK dictionary is made |
36586728 TT |
758 | expandable. |
759 | ||
760 | If REQUIRED is non-zero, then a symtab is created even if it does | |
761 | not contain any symbols. */ | |
6d30eef8 | 762 | |
4359dff1 | 763 | struct block * |
59dfe8ad SM |
764 | buildsym_compunit::end_compunit_symtab_get_static_block (CORE_ADDR end_addr, |
765 | int expandable, | |
766 | int required) | |
c906108c | 767 | { |
c906108c SS |
768 | /* Finish the lexical context of the last function in the file; pop |
769 | the context stack. */ | |
770 | ||
4a2125f5 | 771 | if (!m_context_stack.empty ()) |
c906108c | 772 | { |
a60f3166 | 773 | struct context_stack cstk = pop_context (); |
4359dff1 | 774 | |
c906108c | 775 | /* Make a block for the local symbols within. */ |
c233e9c6 | 776 | finish_block (cstk.name, cstk.old_blocks, NULL, |
a60f3166 | 777 | cstk.start_addr, end_addr); |
c906108c | 778 | |
4a2125f5 | 779 | if (!m_context_stack.empty ()) |
c906108c SS |
780 | { |
781 | /* This is said to happen with SCO. The old coffread.c | |
782 | code simply emptied the context stack, so we do the | |
783 | same. FIXME: Find out why it is happening. This is not | |
784 | believed to happen in most cases (even for coffread.c); | |
785 | it used to be an abort(). */ | |
59dfe8ad | 786 | complaint (_("Context stack not empty in end_compunit_symtab")); |
4a2125f5 | 787 | m_context_stack.clear (); |
c906108c SS |
788 | } |
789 | } | |
790 | ||
791 | /* Reordered executables may have out of order pending blocks; if | |
792 | OBJF_REORDERED is true, then sort the pending blocks. */ | |
6d30eef8 | 793 | |
cbb09508 | 794 | if ((m_objfile->flags & OBJF_REORDERED) && m_pending_blocks) |
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 | { |
3d92a3e3 AB |
894 | const auto lte_is_less_than |
895 | = [] (const linetable_entry &ln1, | |
896 | const linetable_entry &ln2) -> bool | |
897 | { | |
d8cc8af6 TV |
898 | if (ln1.pc == ln2.pc |
899 | && ((ln1.line == 0) != (ln2.line == 0))) | |
900 | return ln1.line == 0; | |
901 | ||
3d92a3e3 AB |
902 | return (ln1.pc < ln2.pc); |
903 | }; | |
904 | ||
905 | /* Like the pending blocks, the line table may be scrambled in | |
906 | reordered executables. Sort it if OBJF_REORDERED is true. It | |
907 | is important to preserve the order of lines at the same | |
908 | address, as this maintains the inline function caller/callee | |
909 | relationships, this is why std::stable_sort is used. */ | |
cbb09508 | 910 | if (m_objfile->flags & OBJF_REORDERED) |
558802e4 SM |
911 | std::stable_sort (subfile->line_vector_entries.begin (), |
912 | subfile->line_vector_entries.end (), | |
3d92a3e3 | 913 | lte_is_less_than); |
7bab9b58 | 914 | } |
9182c5bc | 915 | |
7bab9b58 DE |
916 | /* Allocate a symbol table if necessary. */ |
917 | if (subfile->symtab == NULL) | |
f71ad555 SM |
918 | subfile->symtab = allocate_symtab (cu, subfile->name.c_str (), |
919 | subfile->name_for_id.c_str ()); | |
ebd4e6d0 | 920 | |
5accd1a0 | 921 | struct symtab *symtab = subfile->symtab; |
9182c5bc | 922 | |
7bab9b58 | 923 | /* Fill in its components. */ |
43f3e411 | 924 | |
558802e4 | 925 | if (!subfile->line_vector_entries.empty ()) |
7bab9b58 | 926 | { |
558802e4 SM |
927 | /* Reallocate the line table on the objfile obstack. */ |
928 | size_t n_entries = subfile->line_vector_entries.size (); | |
929 | size_t entry_array_size = n_entries * sizeof (struct linetable_entry); | |
930 | int linetablesize = sizeof (struct linetable) + entry_array_size; | |
931 | ||
5b607461 | 932 | symtab->set_linetable |
558802e4 SM |
933 | (XOBNEWVAR (&m_objfile->objfile_obstack, struct linetable, |
934 | linetablesize)); | |
935 | ||
936 | symtab->linetable ()->nitems = n_entries; | |
937 | memcpy (symtab->linetable ()->item, | |
938 | subfile->line_vector_entries.data (), entry_array_size); | |
c906108c | 939 | } |
24be086d | 940 | else |
5b607461 | 941 | symtab->set_linetable (nullptr); |
c906108c | 942 | |
7bab9b58 DE |
943 | /* Use whatever language we have been using for this |
944 | subfile, not the one that was deduced in allocate_symtab | |
945 | from the filename. We already did our own deducing when | |
946 | we created the subfile, and we may have altered our | |
947 | opinion of what language it is from things we found in | |
948 | the symbols. */ | |
1ee2e9f9 | 949 | symtab->set_language (subfile->language); |
43f3e411 | 950 | } |
c906108c | 951 | |
36664835 SM |
952 | /* Make sure the filetab of main_subfile is the primary filetab of the CU. */ |
953 | cu->set_primary_filetab (m_main_subfile->symtab); | |
84a146c9 | 954 | |
0ab9ce85 | 955 | /* Fill out the compunit symtab. */ |
84a146c9 | 956 | |
ebd4e6d0 | 957 | if (!m_comp_dir.empty ()) |
43f3e411 DE |
958 | { |
959 | /* Reallocate the dirname on the symbol obstack. */ | |
0d9acb45 | 960 | cu->set_dirname (obstack_strdup (&m_objfile->objfile_obstack, |
ebd4e6d0 | 961 | m_comp_dir.c_str ())); |
c906108c SS |
962 | } |
963 | ||
43f3e411 | 964 | /* Save the debug format string (if any) in the symtab. */ |
422f1ea2 | 965 | cu->set_debugformat (m_debugformat); |
43f3e411 DE |
966 | |
967 | /* Similarly for the producer. */ | |
ab5f850e | 968 | cu->set_producer (m_producer); |
43f3e411 | 969 | |
af39c5c8 | 970 | cu->set_blockvector (blockvector); |
7bab9b58 | 971 | { |
63d609de | 972 | struct block *b = blockvector->global_block (); |
cb1df416 | 973 | |
cade9c8a | 974 | b->set_compunit_symtab (cu); |
7bab9b58 | 975 | } |
cb1df416 | 976 | |
10cc645b | 977 | cu->set_macro_table (release_macros ()); |
43f3e411 | 978 | |
7bab9b58 DE |
979 | /* Default any symbols without a specified symtab to the primary symtab. */ |
980 | { | |
981 | int block_i; | |
982 | ||
43f3e411 | 983 | /* The main source file's symtab. */ |
510860f2 | 984 | struct symtab *symtab = cu->primary_filetab (); |
43f3e411 | 985 | |
63d609de | 986 | for (block_i = 0; block_i < blockvector->num_blocks (); block_i++) |
7bab9b58 | 987 | { |
63d609de | 988 | struct block *block = blockvector->block (block_i); |
7bab9b58 | 989 | struct symbol *sym; |
b026f593 | 990 | struct mdict_iterator miter; |
7bab9b58 DE |
991 | |
992 | /* Inlined functions may have symbols not in the global or | |
993 | static symbol lists. */ | |
6c00f721 SM |
994 | if (block->function () != nullptr |
995 | && block->function ()->symtab () == nullptr) | |
996 | block->function ()->set_symtab (symtab); | |
7bab9b58 DE |
997 | |
998 | /* Note that we only want to fix up symbols from the local | |
999 | blocks, not blocks coming from included symtabs. That is why | |
548a89df | 1000 | we use ALL_DICT_SYMBOLS here and not a block iterator. */ |
24d74bb5 | 1001 | ALL_DICT_SYMBOLS (block->multidict (), miter, sym) |
4206d69e TT |
1002 | if (sym->symtab () == NULL) |
1003 | sym->set_symtab (symtab); | |
7bab9b58 DE |
1004 | } |
1005 | } | |
edb3359d | 1006 | |
43f3e411 | 1007 | add_compunit_symtab_to_objfile (cu); |
43f3e411 DE |
1008 | |
1009 | return cu; | |
7bab9b58 DE |
1010 | } |
1011 | ||
59dfe8ad SM |
1012 | /* Implementation of the second part of end_compunit_symtab. Pass STATIC_BLOCK |
1013 | as value returned by end_compunit_symtab_get_static_block. | |
7bab9b58 | 1014 | |
7bab9b58 DE |
1015 | If EXPANDABLE is non-zero the GLOBAL_BLOCK dictionary is made |
1016 | expandable. */ | |
1017 | ||
43f3e411 | 1018 | struct compunit_symtab * |
59dfe8ad | 1019 | buildsym_compunit::end_compunit_symtab_from_static_block |
83bad316 | 1020 | (struct block *static_block, int expandable) |
7bab9b58 | 1021 | { |
43f3e411 | 1022 | struct compunit_symtab *cu; |
7bab9b58 DE |
1023 | |
1024 | if (static_block == NULL) | |
1025 | { | |
0ab9ce85 DE |
1026 | /* Handle the "no blockvector" case. |
1027 | When this happens there is nothing to record, so there's nothing | |
1028 | to do: memory will be freed up later. | |
1029 | ||
1030 | Note: We won't be adding a compunit to the objfile's list of | |
1031 | compunits, so there's nothing to unchain. However, since each symtab | |
1032 | is added to the objfile's obstack we can't free that space. | |
1033 | We could do better, but this is believed to be a sufficiently rare | |
1034 | event. */ | |
43f3e411 | 1035 | cu = NULL; |
7bab9b58 DE |
1036 | } |
1037 | else | |
83bad316 | 1038 | cu = end_compunit_symtab_with_blockvector (static_block, expandable); |
cb1df416 | 1039 | |
43f3e411 | 1040 | return cu; |
6d30eef8 DE |
1041 | } |
1042 | ||
4359dff1 JK |
1043 | /* Finish the symbol definitions for one main source file, close off |
1044 | all the lexical contexts for that file (creating struct block's for | |
1045 | them), then make the struct symtab for that file and put it in the | |
1046 | list of all such. | |
1047 | ||
83bad316 | 1048 | END_ADDR is the address of the end of the file's text. |
4359dff1 | 1049 | |
59dfe8ad | 1050 | Note that it is possible for end_compunit_symtab() to return NULL. In |
4359dff1 JK |
1051 | particular, for the DWARF case at least, it will return NULL when |
1052 | it finds a compilation unit that has exactly one DIE, a | |
1053 | TAG_compile_unit DIE. This can happen when we link in an object | |
1054 | file that was compiled from an empty source file. Returning NULL | |
1055 | is probably not the correct thing to do, because then gdb will | |
1056 | never know about this empty file (FIXME). | |
1057 | ||
1058 | If you need to modify STATIC_BLOCK before it is finalized you should | |
59dfe8ad SM |
1059 | call end_compunit_symtab_get_static_block and |
1060 | end_compunit_symtab_from_static_block yourself. */ | |
6d30eef8 | 1061 | |
43f3e411 | 1062 | struct compunit_symtab * |
83bad316 | 1063 | buildsym_compunit::end_compunit_symtab (CORE_ADDR end_addr) |
6d30eef8 | 1064 | { |
4359dff1 JK |
1065 | struct block *static_block; |
1066 | ||
59dfe8ad | 1067 | static_block = end_compunit_symtab_get_static_block (end_addr, 0, 0); |
83bad316 | 1068 | return end_compunit_symtab_from_static_block (static_block, 0); |
6d30eef8 DE |
1069 | } |
1070 | ||
59dfe8ad SM |
1071 | /* Same as end_compunit_symtab except create a symtab that can be later added |
1072 | to. */ | |
6d30eef8 | 1073 | |
43f3e411 | 1074 | struct compunit_symtab * |
83bad316 | 1075 | buildsym_compunit::end_expandable_symtab (CORE_ADDR end_addr) |
6d30eef8 | 1076 | { |
4359dff1 JK |
1077 | struct block *static_block; |
1078 | ||
59dfe8ad | 1079 | static_block = end_compunit_symtab_get_static_block (end_addr, 1, 0); |
83bad316 | 1080 | return end_compunit_symtab_from_static_block (static_block, 1); |
6d30eef8 DE |
1081 | } |
1082 | ||
1083 | /* Subroutine of augment_type_symtab to simplify it. | |
43f3e411 DE |
1084 | Attach the main source file's symtab to all symbols in PENDING_LIST that |
1085 | don't have one. */ | |
6d30eef8 DE |
1086 | |
1087 | static void | |
43f3e411 DE |
1088 | set_missing_symtab (struct pending *pending_list, |
1089 | struct compunit_symtab *cu) | |
6d30eef8 DE |
1090 | { |
1091 | struct pending *pending; | |
1092 | int i; | |
1093 | ||
1094 | for (pending = pending_list; pending != NULL; pending = pending->next) | |
801e3a5b | 1095 | { |
6d30eef8 DE |
1096 | for (i = 0; i < pending->nsyms; ++i) |
1097 | { | |
4206d69e TT |
1098 | if (pending->symbol[i]->symtab () == NULL) |
1099 | pending->symbol[i]->set_symtab (cu->primary_filetab ()); | |
6d30eef8 | 1100 | } |
801e3a5b | 1101 | } |
6d30eef8 | 1102 | } |
c906108c | 1103 | |
59dfe8ad | 1104 | /* Same as end_compunit_symtab, but for the case where we're adding more symbols |
6d30eef8 DE |
1105 | to an existing symtab that is known to contain only type information. |
1106 | This is the case for DWARF4 Type Units. */ | |
1107 | ||
1108 | void | |
4a2125f5 | 1109 | buildsym_compunit::augment_type_symtab () |
6d30eef8 | 1110 | { |
cbb09508 | 1111 | struct compunit_symtab *cust = m_compunit_symtab; |
63d609de | 1112 | struct blockvector *blockvector = cust->blockvector (); |
6d30eef8 | 1113 | |
4a2125f5 | 1114 | if (!m_context_stack.empty ()) |
a60f3166 | 1115 | complaint (_("Context stack not empty in augment_type_symtab")); |
4a2125f5 | 1116 | if (m_pending_blocks != NULL) |
b98664d3 | 1117 | complaint (_("Blocks in a type symtab")); |
4a2125f5 | 1118 | if (m_pending_macros != NULL) |
b98664d3 | 1119 | complaint (_("Macro in a type symtab")); |
4a2125f5 | 1120 | if (m_have_line_numbers) |
b98664d3 | 1121 | complaint (_("Line numbers recorded in a type symtab")); |
6d30eef8 | 1122 | |
4a2125f5 | 1123 | if (m_file_symbols != NULL) |
6d30eef8 | 1124 | { |
63d609de | 1125 | struct block *block = blockvector->static_block (); |
6d30eef8 DE |
1126 | |
1127 | /* First mark any symbols without a specified symtab as belonging | |
1128 | to the primary symtab. */ | |
4a2125f5 | 1129 | set_missing_symtab (m_file_symbols, cust); |
6d30eef8 | 1130 | |
24d74bb5 | 1131 | mdict_add_pending (block->multidict (), m_file_symbols); |
6d30eef8 DE |
1132 | } |
1133 | ||
4a2125f5 | 1134 | if (m_global_symbols != NULL) |
6d30eef8 | 1135 | { |
63d609de | 1136 | struct block *block = blockvector->global_block (); |
6d30eef8 DE |
1137 | |
1138 | /* First mark any symbols without a specified symtab as belonging | |
1139 | to the primary symtab. */ | |
4a2125f5 | 1140 | set_missing_symtab (m_global_symbols, cust); |
6d30eef8 | 1141 | |
24d74bb5 | 1142 | mdict_add_pending (block->multidict (), m_global_symbols); |
6d30eef8 | 1143 | } |
c906108c SS |
1144 | } |
1145 | ||
1146 | /* Push a context block. Args are an identifying nesting level | |
1147 | (checkable when you pop it), and the starting PC address of this | |
1148 | context. */ | |
1149 | ||
1150 | struct context_stack * | |
4a2125f5 | 1151 | buildsym_compunit::push_context (int desc, CORE_ADDR valu) |
c906108c | 1152 | { |
4a2125f5 TT |
1153 | m_context_stack.emplace_back (); |
1154 | struct context_stack *newobj = &m_context_stack.back (); | |
c906108c | 1155 | |
fe978cb0 | 1156 | newobj->depth = desc; |
4a2125f5 TT |
1157 | newobj->locals = m_local_symbols; |
1158 | newobj->old_blocks = m_pending_blocks; | |
fe978cb0 | 1159 | newobj->start_addr = valu; |
4a2125f5 | 1160 | newobj->local_using_directives = m_local_using_directives; |
fe978cb0 | 1161 | newobj->name = NULL; |
c906108c | 1162 | |
4a2125f5 TT |
1163 | m_local_symbols = NULL; |
1164 | m_local_using_directives = NULL; | |
c906108c | 1165 | |
fe978cb0 | 1166 | return newobj; |
c906108c | 1167 | } |
0c5e171a | 1168 | |
a672ef13 | 1169 | /* Pop a context block. Returns the address of the context block just |
4a64f543 | 1170 | popped. */ |
a672ef13 | 1171 | |
a60f3166 | 1172 | struct context_stack |
4a2125f5 | 1173 | buildsym_compunit::pop_context () |
0c5e171a | 1174 | { |
4a2125f5 TT |
1175 | gdb_assert (!m_context_stack.empty ()); |
1176 | struct context_stack result = m_context_stack.back (); | |
1177 | m_context_stack.pop_back (); | |
a60f3166 | 1178 | return result; |
0c5e171a | 1179 | } |