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c906108c | 1 | /* Support routines for building symbol tables in GDB's internal format. |
b811d2c2 | 2 | Copyright (C) 1986-2020 Free Software Foundation, Inc. |
4e5106e6 | 3 | Copyright (C) 2019-2020 Advanced Micro Devices, Inc. All rights reserved. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 19 | |
c906108c | 20 | #include "defs.h" |
d55e5aa6 | 21 | #include "buildsym-legacy.h" |
4de283e4 | 22 | #include "bfd.h" |
d55e5aa6 | 23 | #include "gdb_obstack.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" | |
36 | #include "addrmap.h" | |
37 | #include <algorithm> | |
9219021c | 38 | |
0a0edcd5 | 39 | /* For cleanup_undefined_stabs_types and finish_global_stabs (somewhat |
c906108c SS |
40 | questionable--see comment where we call them). */ |
41 | ||
42 | #include "stabsread.h" | |
43 | ||
93eed41f TT |
44 | /* List of blocks already made (lexical contexts already closed). |
45 | This is used at the end to make the blockvector. */ | |
46 | ||
47 | struct pending_block | |
48 | { | |
49 | struct pending_block *next; | |
50 | struct block *block; | |
51 | }; | |
52 | ||
c906108c SS |
53 | /* Initial sizes of data structures. These are realloc'd larger if |
54 | needed, and realloc'd down to the size actually used, when | |
55 | completed. */ | |
56 | ||
c906108c SS |
57 | #define INITIAL_LINE_VECTOR_LENGTH 1000 |
58 | \f | |
59 | ||
ab209f6f TT |
60 | buildsym_compunit::buildsym_compunit (struct objfile *objfile_, |
61 | const char *name, | |
62 | const char *comp_dir_, | |
63 | enum language language_, | |
64 | CORE_ADDR last_addr) | |
cbb09508 | 65 | : m_objfile (objfile_), |
ab209f6f | 66 | m_last_source_file (name == nullptr ? nullptr : xstrdup (name)), |
cbb09508 KS |
67 | m_comp_dir (comp_dir_ == nullptr ? nullptr : xstrdup (comp_dir_)), |
68 | m_language (language_), | |
ab209f6f TT |
69 | m_last_source_start_addr (last_addr) |
70 | { | |
71 | /* Allocate the compunit symtab now. The caller needs it to allocate | |
72 | non-primary symtabs. It is also needed by get_macro_table. */ | |
cbb09508 | 73 | m_compunit_symtab = allocate_compunit_symtab (m_objfile, name); |
ab209f6f TT |
74 | |
75 | /* Build the subfile for NAME (the main source file) so that we can record | |
76 | a pointer to it for later. | |
77 | IMPORTANT: Do not allocate a struct symtab for NAME here. | |
78 | It can happen that the debug info provides a different path to NAME than | |
79 | DIRNAME,NAME. We cope with this in watch_main_source_file_lossage but | |
80 | that only works if the main_subfile doesn't have a symtab yet. */ | |
81 | start_subfile (name); | |
82 | /* Save this so that we don't have to go looking for it at the end | |
83 | of the subfiles list. */ | |
cbb09508 | 84 | m_main_subfile = m_current_subfile; |
ab209f6f TT |
85 | } |
86 | ||
87 | buildsym_compunit::~buildsym_compunit () | |
88 | { | |
89 | struct subfile *subfile, *nextsub; | |
90 | ||
91 | if (m_pending_macros != nullptr) | |
92 | free_macro_table (m_pending_macros); | |
93 | ||
cbb09508 | 94 | for (subfile = m_subfiles; |
ab209f6f TT |
95 | subfile != NULL; |
96 | subfile = nextsub) | |
97 | { | |
98 | nextsub = subfile->next; | |
99 | xfree (subfile->name); | |
100 | xfree (subfile->line_vector); | |
101 | xfree (subfile); | |
102 | } | |
103 | ||
104 | struct pending *next, *next1; | |
105 | ||
106 | for (next = m_file_symbols; next != NULL; next = next1) | |
107 | { | |
108 | next1 = next->next; | |
109 | xfree ((void *) next); | |
110 | } | |
111 | ||
112 | for (next = m_global_symbols; next != NULL; next = next1) | |
113 | { | |
114 | next1 = next->next; | |
115 | xfree ((void *) next); | |
116 | } | |
117 | } | |
118 | ||
119 | struct macro_table * | |
120 | buildsym_compunit::get_macro_table () | |
121 | { | |
122 | if (m_pending_macros == nullptr) | |
cbb09508 | 123 | m_pending_macros = new_macro_table (&m_objfile->per_bfd->storage_obstack, |
25629dfd | 124 | &m_objfile->per_bfd->macro_cache, |
cbb09508 | 125 | m_compunit_symtab); |
ab209f6f TT |
126 | return m_pending_macros; |
127 | } | |
128 | ||
4a64f543 | 129 | /* Maintain the lists of symbols and blocks. */ |
c906108c | 130 | |
93bf33fd | 131 | /* Add a symbol to one of the lists of symbols. */ |
c906108c SS |
132 | |
133 | void | |
134 | add_symbol_to_list (struct symbol *symbol, struct pending **listhead) | |
135 | { | |
52f0bd74 | 136 | struct pending *link; |
c906108c SS |
137 | |
138 | /* If this is an alias for another symbol, don't add it. */ | |
4d4eaa30 | 139 | if (symbol->linkage_name () && symbol->linkage_name ()[0] == '#') |
c906108c SS |
140 | return; |
141 | ||
4a64f543 | 142 | /* We keep PENDINGSIZE symbols in each link of the list. If we |
c906108c SS |
143 | don't have a link with room in it, add a new link. */ |
144 | if (*listhead == NULL || (*listhead)->nsyms == PENDINGSIZE) | |
145 | { | |
1d376700 | 146 | link = XNEW (struct pending); |
c906108c SS |
147 | link->next = *listhead; |
148 | *listhead = link; | |
149 | link->nsyms = 0; | |
150 | } | |
151 | ||
152 | (*listhead)->symbol[(*listhead)->nsyms++] = symbol; | |
153 | } | |
154 | ||
155 | /* Find a symbol named NAME on a LIST. NAME need not be | |
156 | '\0'-terminated; LENGTH is the length of the name. */ | |
157 | ||
158 | struct symbol * | |
159 | find_symbol_in_list (struct pending *list, char *name, int length) | |
160 | { | |
161 | int j; | |
0d5cff50 | 162 | const char *pp; |
c906108c SS |
163 | |
164 | while (list != NULL) | |
165 | { | |
166 | for (j = list->nsyms; --j >= 0;) | |
167 | { | |
987012b8 | 168 | pp = list->symbol[j]->linkage_name (); |
5aafa1cc PM |
169 | if (*pp == *name && strncmp (pp, name, length) == 0 |
170 | && pp[length] == '\0') | |
c906108c SS |
171 | { |
172 | return (list->symbol[j]); | |
173 | } | |
174 | } | |
175 | list = list->next; | |
176 | } | |
177 | return (NULL); | |
178 | } | |
179 | ||
6b213a47 TT |
180 | /* Record BLOCK on the list of all blocks in the file. Put it after |
181 | OPBLOCK, or at the beginning if opblock is NULL. This puts the | |
182 | block in the list after all its subblocks. */ | |
183 | ||
4a2125f5 TT |
184 | void |
185 | buildsym_compunit::record_pending_block (struct block *block, | |
186 | struct pending_block *opblock) | |
6b213a47 TT |
187 | { |
188 | struct pending_block *pblock; | |
189 | ||
4a2125f5 | 190 | pblock = XOBNEW (&m_pending_block_obstack, struct pending_block); |
6b213a47 TT |
191 | pblock->block = block; |
192 | if (opblock) | |
193 | { | |
194 | pblock->next = opblock->next; | |
195 | opblock->next = pblock; | |
196 | } | |
197 | else | |
198 | { | |
4a2125f5 TT |
199 | pblock->next = m_pending_blocks; |
200 | m_pending_blocks = pblock; | |
6b213a47 TT |
201 | } |
202 | } | |
203 | ||
c906108c SS |
204 | /* Take one of the lists of symbols and make a block from it. Keep |
205 | the order the symbols have in the list (reversed from the input | |
206 | file). Put the block on the list of pending blocks. */ | |
207 | ||
4a2125f5 TT |
208 | struct block * |
209 | buildsym_compunit::finish_block_internal | |
210 | (struct symbol *symbol, | |
211 | struct pending **listhead, | |
212 | struct pending_block *old_blocks, | |
213 | const struct dynamic_prop *static_link, | |
214 | CORE_ADDR start, CORE_ADDR end, | |
215 | int is_global, int expandable) | |
c906108c | 216 | { |
cbb09508 | 217 | struct gdbarch *gdbarch = get_objfile_arch (m_objfile); |
52f0bd74 AC |
218 | struct pending *next, *next1; |
219 | struct block *block; | |
220 | struct pending_block *pblock; | |
c906108c | 221 | struct pending_block *opblock; |
c906108c | 222 | |
84a146c9 | 223 | block = (is_global |
cbb09508 KS |
224 | ? allocate_global_block (&m_objfile->objfile_obstack) |
225 | : allocate_block (&m_objfile->objfile_obstack)); | |
c906108c | 226 | |
261397f8 DJ |
227 | if (symbol) |
228 | { | |
b026f593 KS |
229 | BLOCK_MULTIDICT (block) |
230 | = mdict_create_linear (&m_objfile->objfile_obstack, *listhead); | |
261397f8 DJ |
231 | } |
232 | else | |
c906108c | 233 | { |
6d30eef8 DE |
234 | if (expandable) |
235 | { | |
b026f593 KS |
236 | BLOCK_MULTIDICT (block) = mdict_create_hashed_expandable (m_language); |
237 | mdict_add_pending (BLOCK_MULTIDICT (block), *listhead); | |
6d30eef8 DE |
238 | } |
239 | else | |
240 | { | |
b026f593 KS |
241 | BLOCK_MULTIDICT (block) = |
242 | mdict_create_hashed (&m_objfile->objfile_obstack, *listhead); | |
6d30eef8 | 243 | } |
c906108c SS |
244 | } |
245 | ||
246 | BLOCK_START (block) = start; | |
247 | BLOCK_END (block) = end; | |
c906108c | 248 | |
c906108c SS |
249 | /* Put the block in as the value of the symbol that names it. */ |
250 | ||
251 | if (symbol) | |
252 | { | |
253 | struct type *ftype = SYMBOL_TYPE (symbol); | |
b026f593 | 254 | struct mdict_iterator miter; |
c906108c SS |
255 | SYMBOL_BLOCK_VALUE (symbol) = block; |
256 | BLOCK_FUNCTION (block) = symbol; | |
257 | ||
258 | if (TYPE_NFIELDS (ftype) <= 0) | |
259 | { | |
260 | /* No parameter type information is recorded with the | |
261 | function's type. Set that from the type of the | |
4a64f543 | 262 | parameter symbols. */ |
c906108c SS |
263 | int nparams = 0, iparams; |
264 | struct symbol *sym; | |
8157b174 TT |
265 | |
266 | /* Here we want to directly access the dictionary, because | |
267 | we haven't fully initialized the block yet. */ | |
b026f593 | 268 | ALL_DICT_SYMBOLS (BLOCK_MULTIDICT (block), miter, sym) |
c906108c | 269 | { |
2a2d4dc3 AS |
270 | if (SYMBOL_IS_ARGUMENT (sym)) |
271 | nparams++; | |
c906108c SS |
272 | } |
273 | if (nparams > 0) | |
274 | { | |
275 | TYPE_NFIELDS (ftype) = nparams; | |
276 | TYPE_FIELDS (ftype) = (struct field *) | |
277 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
278 | ||
de4f826b | 279 | iparams = 0; |
8157b174 TT |
280 | /* Here we want to directly access the dictionary, because |
281 | we haven't fully initialized the block yet. */ | |
b026f593 | 282 | ALL_DICT_SYMBOLS (BLOCK_MULTIDICT (block), miter, sym) |
c906108c | 283 | { |
de4f826b DC |
284 | if (iparams == nparams) |
285 | break; | |
286 | ||
2a2d4dc3 | 287 | if (SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 288 | { |
c906108c | 289 | TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym); |
8176bb6d | 290 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c | 291 | iparams++; |
c906108c SS |
292 | } |
293 | } | |
294 | } | |
295 | } | |
296 | } | |
297 | else | |
298 | { | |
299 | BLOCK_FUNCTION (block) = NULL; | |
300 | } | |
301 | ||
63e43d3a | 302 | if (static_link != NULL) |
cbb09508 | 303 | objfile_register_static_link (m_objfile, block, static_link); |
63e43d3a | 304 | |
1d376700 | 305 | /* Now free the links of the list, and empty the list. */ |
c906108c SS |
306 | |
307 | for (next = *listhead; next; next = next1) | |
308 | { | |
309 | next1 = next->next; | |
1d376700 | 310 | xfree (next); |
c906108c SS |
311 | } |
312 | *listhead = NULL; | |
313 | ||
c906108c | 314 | /* Check to be sure that the blocks have an end address that is |
4a64f543 | 315 | greater than starting address. */ |
c906108c SS |
316 | |
317 | if (BLOCK_END (block) < BLOCK_START (block)) | |
318 | { | |
319 | if (symbol) | |
320 | { | |
b98664d3 | 321 | complaint (_("block end address less than block " |
3e43a32a | 322 | "start address in %s (patched it)"), |
987012b8 | 323 | symbol->print_name ()); |
c906108c SS |
324 | } |
325 | else | |
326 | { | |
b98664d3 | 327 | complaint (_("block end address %s less than block " |
3e43a32a | 328 | "start address %s (patched it)"), |
5af949e3 UW |
329 | paddress (gdbarch, BLOCK_END (block)), |
330 | paddress (gdbarch, BLOCK_START (block))); | |
c906108c | 331 | } |
4a64f543 | 332 | /* Better than nothing. */ |
c906108c SS |
333 | BLOCK_END (block) = BLOCK_START (block); |
334 | } | |
c906108c SS |
335 | |
336 | /* Install this block as the superblock of all blocks made since the | |
337 | start of this scope that don't have superblocks yet. */ | |
338 | ||
339 | opblock = NULL; | |
4a2125f5 | 340 | for (pblock = m_pending_blocks; |
c0219d42 MS |
341 | pblock && pblock != old_blocks; |
342 | pblock = pblock->next) | |
c906108c SS |
343 | { |
344 | if (BLOCK_SUPERBLOCK (pblock->block) == NULL) | |
345 | { | |
c906108c | 346 | /* Check to be sure the blocks are nested as we receive |
4a64f543 | 347 | them. If the compiler/assembler/linker work, this just |
14711c82 DJ |
348 | burns a small amount of time. |
349 | ||
350 | Skip blocks which correspond to a function; they're not | |
351 | physically nested inside this other blocks, only | |
352 | lexically nested. */ | |
353 | if (BLOCK_FUNCTION (pblock->block) == NULL | |
354 | && (BLOCK_START (pblock->block) < BLOCK_START (block) | |
355 | || BLOCK_END (pblock->block) > BLOCK_END (block))) | |
c906108c SS |
356 | { |
357 | if (symbol) | |
358 | { | |
b98664d3 | 359 | complaint (_("inner block not inside outer block in %s"), |
987012b8 | 360 | symbol->print_name ()); |
c906108c SS |
361 | } |
362 | else | |
363 | { | |
b98664d3 | 364 | complaint (_("inner block (%s-%s) not " |
3e43a32a | 365 | "inside outer block (%s-%s)"), |
5af949e3 UW |
366 | paddress (gdbarch, BLOCK_START (pblock->block)), |
367 | paddress (gdbarch, BLOCK_END (pblock->block)), | |
368 | paddress (gdbarch, BLOCK_START (block)), | |
369 | paddress (gdbarch, BLOCK_END (block))); | |
c906108c SS |
370 | } |
371 | if (BLOCK_START (pblock->block) < BLOCK_START (block)) | |
372 | BLOCK_START (pblock->block) = BLOCK_START (block); | |
373 | if (BLOCK_END (pblock->block) > BLOCK_END (block)) | |
374 | BLOCK_END (pblock->block) = BLOCK_END (block); | |
375 | } | |
c906108c SS |
376 | BLOCK_SUPERBLOCK (pblock->block) = block; |
377 | } | |
378 | opblock = pblock; | |
379 | } | |
380 | ||
22cee43f PMR |
381 | block_set_using (block, |
382 | (is_global | |
4a2125f5 TT |
383 | ? m_global_using_directives |
384 | : m_local_using_directives), | |
cbb09508 | 385 | &m_objfile->objfile_obstack); |
22cee43f | 386 | if (is_global) |
4a2125f5 | 387 | m_global_using_directives = NULL; |
22cee43f | 388 | else |
4a2125f5 | 389 | m_local_using_directives = NULL; |
27aa8d6a | 390 | |
6b213a47 | 391 | record_pending_block (block, opblock); |
801e3a5b JB |
392 | |
393 | return block; | |
c906108c SS |
394 | } |
395 | ||
84a146c9 | 396 | struct block * |
4a2125f5 TT |
397 | buildsym_compunit::finish_block (struct symbol *symbol, |
398 | struct pending_block *old_blocks, | |
399 | const struct dynamic_prop *static_link, | |
400 | CORE_ADDR start, CORE_ADDR end) | |
84a146c9 | 401 | { |
4a2125f5 TT |
402 | return finish_block_internal (symbol, &m_local_symbols, |
403 | old_blocks, static_link, start, end, 0, 0); | |
84a146c9 | 404 | } |
de4f826b | 405 | |
801e3a5b JB |
406 | /* Record that the range of addresses from START to END_INCLUSIVE |
407 | (inclusive, like it says) belongs to BLOCK. BLOCK's start and end | |
408 | addresses must be set already. You must apply this function to all | |
409 | BLOCK's children before applying it to BLOCK. | |
410 | ||
411 | If a call to this function complicates the picture beyond that | |
412 | already provided by BLOCK_START and BLOCK_END, then we create an | |
413 | address map for the block. */ | |
414 | void | |
4a2125f5 TT |
415 | buildsym_compunit::record_block_range (struct block *block, |
416 | CORE_ADDR start, | |
417 | CORE_ADDR end_inclusive) | |
801e3a5b JB |
418 | { |
419 | /* If this is any different from the range recorded in the block's | |
420 | own BLOCK_START and BLOCK_END, then note that the address map has | |
421 | become interesting. Note that even if this block doesn't have | |
422 | any "interesting" ranges, some later block might, so we still | |
423 | need to record this block in the addrmap. */ | |
424 | if (start != BLOCK_START (block) | |
425 | || end_inclusive + 1 != BLOCK_END (block)) | |
4a2125f5 | 426 | m_pending_addrmap_interesting = true; |
801e3a5b | 427 | |
4a2125f5 TT |
428 | if (m_pending_addrmap == nullptr) |
429 | m_pending_addrmap = addrmap_create_mutable (&m_pending_addrmap_obstack); | |
801e3a5b | 430 | |
4a2125f5 | 431 | addrmap_set_empty (m_pending_addrmap, start, end_inclusive, block); |
801e3a5b JB |
432 | } |
433 | ||
4a2125f5 TT |
434 | struct blockvector * |
435 | buildsym_compunit::make_blockvector () | |
c906108c | 436 | { |
52f0bd74 AC |
437 | struct pending_block *next; |
438 | struct blockvector *blockvector; | |
439 | int i; | |
c906108c SS |
440 | |
441 | /* Count the length of the list of blocks. */ | |
442 | ||
4a2125f5 | 443 | for (next = m_pending_blocks, i = 0; next; next = next->next, i++) |
5ac04550 | 444 | { |
c906108c SS |
445 | } |
446 | ||
447 | blockvector = (struct blockvector *) | |
cbb09508 | 448 | obstack_alloc (&m_objfile->objfile_obstack, |
c906108c SS |
449 | (sizeof (struct blockvector) |
450 | + (i - 1) * sizeof (struct block *))); | |
451 | ||
4a64f543 | 452 | /* Copy the blocks into the blockvector. This is done in reverse |
c906108c | 453 | order, which happens to put the blocks into the proper order |
4a64f543 | 454 | (ascending starting address). finish_block has hair to insert |
c906108c SS |
455 | each block into the list after its subblocks in order to make |
456 | sure this is true. */ | |
457 | ||
458 | BLOCKVECTOR_NBLOCKS (blockvector) = i; | |
4a2125f5 | 459 | for (next = m_pending_blocks; next; next = next->next) |
c906108c SS |
460 | { |
461 | BLOCKVECTOR_BLOCK (blockvector, --i) = next->block; | |
462 | } | |
463 | ||
4a2125f5 | 464 | free_pending_blocks (); |
c906108c | 465 | |
801e3a5b JB |
466 | /* If we needed an address map for this symtab, record it in the |
467 | blockvector. */ | |
4a2125f5 | 468 | if (m_pending_addrmap != nullptr && m_pending_addrmap_interesting) |
801e3a5b | 469 | BLOCKVECTOR_MAP (blockvector) |
cbb09508 | 470 | = addrmap_create_fixed (m_pending_addrmap, &m_objfile->objfile_obstack); |
801e3a5b JB |
471 | else |
472 | BLOCKVECTOR_MAP (blockvector) = 0; | |
4aad0dfc | 473 | |
c906108c | 474 | /* Some compilers output blocks in the wrong order, but we depend on |
4a64f543 | 475 | their being in the right order so we can binary search. Check the |
4aad0dfc DE |
476 | order and moan about it. |
477 | Note: Remember that the first two blocks are the global and static | |
478 | blocks. We could special case that fact and begin checking at block 2. | |
479 | To avoid making that assumption we do not. */ | |
c906108c SS |
480 | if (BLOCKVECTOR_NBLOCKS (blockvector) > 1) |
481 | { | |
482 | for (i = 1; i < BLOCKVECTOR_NBLOCKS (blockvector); i++) | |
483 | { | |
484 | if (BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i - 1)) | |
485 | > BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i))) | |
486 | { | |
59527da0 JB |
487 | CORE_ADDR start |
488 | = BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i)); | |
c906108c | 489 | |
b98664d3 | 490 | complaint (_("block at %s out of order"), |
bb599908 | 491 | hex_string ((LONGEST) start)); |
c906108c SS |
492 | } |
493 | } | |
494 | } | |
c906108c SS |
495 | |
496 | return (blockvector); | |
497 | } | |
498 | \f | |
499 | /* Start recording information about source code that came from an | |
500 | included (or otherwise merged-in) source file with a different | |
4d663531 | 501 | name. NAME is the name of the file (cannot be NULL). */ |
c906108c SS |
502 | |
503 | void | |
4a2125f5 | 504 | buildsym_compunit::start_subfile (const char *name) |
c906108c | 505 | { |
43f3e411 | 506 | const char *subfile_dirname; |
52f0bd74 | 507 | struct subfile *subfile; |
c906108c | 508 | |
cbb09508 | 509 | subfile_dirname = m_comp_dir.get (); |
c906108c | 510 | |
43f3e411 DE |
511 | /* See if this subfile is already registered. */ |
512 | ||
cbb09508 | 513 | for (subfile = m_subfiles; subfile; subfile = subfile->next) |
c906108c | 514 | { |
84ba0adf DJ |
515 | char *subfile_name; |
516 | ||
517 | /* If NAME is an absolute path, and this subfile is not, then | |
518 | attempt to create an absolute path to compare. */ | |
519 | if (IS_ABSOLUTE_PATH (name) | |
520 | && !IS_ABSOLUTE_PATH (subfile->name) | |
43f3e411 DE |
521 | && subfile_dirname != NULL) |
522 | subfile_name = concat (subfile_dirname, SLASH_STRING, | |
6eb7ee03 | 523 | subfile->name, (char *) NULL); |
84ba0adf DJ |
524 | else |
525 | subfile_name = subfile->name; | |
526 | ||
527 | if (FILENAME_CMP (subfile_name, name) == 0) | |
c906108c | 528 | { |
4a2125f5 | 529 | m_current_subfile = subfile; |
84ba0adf DJ |
530 | if (subfile_name != subfile->name) |
531 | xfree (subfile_name); | |
c906108c SS |
532 | return; |
533 | } | |
84ba0adf DJ |
534 | if (subfile_name != subfile->name) |
535 | xfree (subfile_name); | |
c906108c SS |
536 | } |
537 | ||
43f3e411 | 538 | /* This subfile is not known. Add an entry for it. */ |
c906108c | 539 | |
8d749320 | 540 | subfile = XNEW (struct subfile); |
43f3e411 | 541 | memset (subfile, 0, sizeof (struct subfile)); |
4a2125f5 | 542 | subfile->buildsym_compunit = this; |
43f3e411 | 543 | |
cbb09508 KS |
544 | subfile->next = m_subfiles; |
545 | m_subfiles = subfile; | |
43f3e411 | 546 | |
4a2125f5 | 547 | m_current_subfile = subfile; |
c906108c | 548 | |
b74db436 | 549 | subfile->name = xstrdup (name); |
c906108c SS |
550 | |
551 | /* Initialize line-number recording for this subfile. */ | |
552 | subfile->line_vector = NULL; | |
553 | ||
554 | /* Default the source language to whatever can be deduced from the | |
555 | filename. If nothing can be deduced (such as for a C/C++ include | |
556 | file with a ".h" extension), then inherit whatever language the | |
557 | previous subfile had. This kludgery is necessary because there | |
558 | is no standard way in some object formats to record the source | |
559 | language. Also, when symtabs are allocated we try to deduce a | |
560 | language then as well, but it is too late for us to use that | |
561 | information while reading symbols, since symtabs aren't allocated | |
562 | until after all the symbols have been processed for a given | |
4a64f543 | 563 | source file. */ |
c906108c SS |
564 | |
565 | subfile->language = deduce_language_from_filename (subfile->name); | |
5aafa1cc PM |
566 | if (subfile->language == language_unknown |
567 | && subfile->next != NULL) | |
c906108c SS |
568 | { |
569 | subfile->language = subfile->next->language; | |
570 | } | |
571 | ||
25caa7a8 | 572 | /* If the filename of this subfile ends in .C, then change the |
c906108c | 573 | language of any pending subfiles from C to C++. We also accept |
25caa7a8 | 574 | any other C++ suffixes accepted by deduce_language_from_filename. */ |
c906108c SS |
575 | /* Likewise for f2c. */ |
576 | ||
577 | if (subfile->name) | |
578 | { | |
579 | struct subfile *s; | |
580 | enum language sublang = deduce_language_from_filename (subfile->name); | |
581 | ||
582 | if (sublang == language_cplus || sublang == language_fortran) | |
cbb09508 | 583 | for (s = m_subfiles; s != NULL; s = s->next) |
c906108c SS |
584 | if (s->language == language_c) |
585 | s->language = sublang; | |
586 | } | |
587 | ||
588 | /* And patch up this file if necessary. */ | |
589 | if (subfile->language == language_c | |
590 | && subfile->next != NULL | |
591 | && (subfile->next->language == language_cplus | |
592 | || subfile->next->language == language_fortran)) | |
593 | { | |
594 | subfile->language = subfile->next->language; | |
595 | } | |
596 | } | |
597 | ||
598 | /* For stabs readers, the first N_SO symbol is assumed to be the | |
599 | source file name, and the subfile struct is initialized using that | |
600 | assumption. If another N_SO symbol is later seen, immediately | |
601 | following the first one, then the first one is assumed to be the | |
602 | directory name and the second one is really the source file name. | |
603 | ||
604 | So we have to patch up the subfile struct by moving the old name | |
605 | value to dirname and remembering the new name. Some sanity | |
606 | checking is performed to ensure that the state of the subfile | |
607 | struct is reasonable and that the old name we are assuming to be a | |
4a64f543 | 608 | directory name actually is (by checking for a trailing '/'). */ |
c906108c SS |
609 | |
610 | void | |
4a2125f5 TT |
611 | buildsym_compunit::patch_subfile_names (struct subfile *subfile, |
612 | const char *name) | |
c906108c | 613 | { |
43f3e411 | 614 | if (subfile != NULL |
cbb09508 | 615 | && m_comp_dir == NULL |
43f3e411 | 616 | && subfile->name != NULL |
0ba1096a | 617 | && IS_DIR_SEPARATOR (subfile->name[strlen (subfile->name) - 1])) |
c906108c | 618 | { |
cbb09508 | 619 | m_comp_dir.reset (subfile->name); |
1b36a34b | 620 | subfile->name = xstrdup (name); |
46212e0b | 621 | set_last_source_file (name); |
c906108c SS |
622 | |
623 | /* Default the source language to whatever can be deduced from | |
624 | the filename. If nothing can be deduced (such as for a C/C++ | |
625 | include file with a ".h" extension), then inherit whatever | |
626 | language the previous subfile had. This kludgery is | |
627 | necessary because there is no standard way in some object | |
628 | formats to record the source language. Also, when symtabs | |
629 | are allocated we try to deduce a language then as well, but | |
630 | it is too late for us to use that information while reading | |
631 | symbols, since symtabs aren't allocated until after all the | |
4a64f543 | 632 | symbols have been processed for a given source file. */ |
c906108c SS |
633 | |
634 | subfile->language = deduce_language_from_filename (subfile->name); | |
5aafa1cc PM |
635 | if (subfile->language == language_unknown |
636 | && subfile->next != NULL) | |
c906108c SS |
637 | { |
638 | subfile->language = subfile->next->language; | |
639 | } | |
640 | } | |
641 | } | |
642 | \f | |
643 | /* Handle the N_BINCL and N_EINCL symbol types that act like N_SOL for | |
644 | switching source files (different subfiles, as we call them) within | |
645 | one object file, but using a stack rather than in an arbitrary | |
646 | order. */ | |
647 | ||
648 | void | |
4a2125f5 | 649 | buildsym_compunit::push_subfile () |
c906108c | 650 | { |
4a2125f5 TT |
651 | gdb_assert (m_current_subfile != NULL); |
652 | gdb_assert (m_current_subfile->name != NULL); | |
653 | m_subfile_stack.push_back (m_current_subfile->name); | |
c906108c SS |
654 | } |
655 | ||
8419ee53 | 656 | const char * |
4a2125f5 | 657 | buildsym_compunit::pop_subfile () |
c906108c | 658 | { |
4a2125f5 TT |
659 | gdb_assert (!m_subfile_stack.empty ()); |
660 | const char *name = m_subfile_stack.back (); | |
661 | m_subfile_stack.pop_back (); | |
8419ee53 | 662 | return name; |
c906108c SS |
663 | } |
664 | \f | |
665 | /* Add a linetable entry for line number LINE and address PC to the | |
666 | line vector for SUBFILE. */ | |
667 | ||
668 | void | |
4a2125f5 TT |
669 | buildsym_compunit::record_line (struct subfile *subfile, int line, |
670 | CORE_ADDR pc) | |
c906108c SS |
671 | { |
672 | struct linetable_entry *e; | |
c906108c | 673 | |
c906108c SS |
674 | /* Make sure line vector exists and is big enough. */ |
675 | if (!subfile->line_vector) | |
676 | { | |
677 | subfile->line_vector_length = INITIAL_LINE_VECTOR_LENGTH; | |
678 | subfile->line_vector = (struct linetable *) | |
679 | xmalloc (sizeof (struct linetable) | |
c5aa993b | 680 | + subfile->line_vector_length * sizeof (struct linetable_entry)); |
c906108c | 681 | subfile->line_vector->nitems = 0; |
4a2125f5 | 682 | m_have_line_numbers = true; |
c906108c SS |
683 | } |
684 | ||
685 | if (subfile->line_vector->nitems + 1 >= subfile->line_vector_length) | |
686 | { | |
687 | subfile->line_vector_length *= 2; | |
688 | subfile->line_vector = (struct linetable *) | |
689 | xrealloc ((char *) subfile->line_vector, | |
690 | (sizeof (struct linetable) | |
691 | + (subfile->line_vector_length | |
692 | * sizeof (struct linetable_entry)))); | |
693 | } | |
694 | ||
607ae575 DJ |
695 | /* Normally, we treat lines as unsorted. But the end of sequence |
696 | marker is special. We sort line markers at the same PC by line | |
697 | number, so end of sequence markers (which have line == 0) appear | |
698 | first. This is right if the marker ends the previous function, | |
699 | and there is no padding before the next function. But it is | |
700 | wrong if the previous line was empty and we are now marking a | |
701 | switch to a different subfile. We must leave the end of sequence | |
702 | marker at the end of this group of lines, not sort the empty line | |
703 | to after the marker. The easiest way to accomplish this is to | |
704 | delete any empty lines from our table, if they are followed by | |
705 | end of sequence markers. All we lose is the ability to set | |
706 | breakpoints at some lines which contain no instructions | |
707 | anyway. */ | |
708 | if (line == 0 && subfile->line_vector->nitems > 0) | |
709 | { | |
710 | e = subfile->line_vector->item + subfile->line_vector->nitems - 1; | |
711 | while (subfile->line_vector->nitems > 0 && e->pc == pc) | |
712 | { | |
713 | e--; | |
714 | subfile->line_vector->nitems--; | |
715 | } | |
716 | } | |
717 | ||
c906108c SS |
718 | e = subfile->line_vector->item + subfile->line_vector->nitems++; |
719 | e->line = line; | |
607ae575 | 720 | e->pc = pc; |
c906108c SS |
721 | } |
722 | ||
723 | /* Needed in order to sort line tables from IBM xcoff files. Sigh! */ | |
724 | ||
39ef2f62 CB |
725 | static bool |
726 | lte_is_less_than (const linetable_entry &ln1, const linetable_entry &ln2) | |
c906108c | 727 | { |
c906108c SS |
728 | /* Note: this code does not assume that CORE_ADDRs can fit in ints. |
729 | Please keep it that way. */ | |
39ef2f62 CB |
730 | if (ln1.pc < ln2.pc) |
731 | return true; | |
c906108c | 732 | |
39ef2f62 CB |
733 | if (ln1.pc > ln2.pc) |
734 | return false; | |
c906108c SS |
735 | |
736 | /* If pc equal, sort by line. I'm not sure whether this is optimum | |
737 | behavior (see comment at struct linetable in symtab.h). */ | |
39ef2f62 | 738 | return ln1.line < ln2.line; |
c906108c SS |
739 | } |
740 | \f | |
4a64f543 MS |
741 | /* Subroutine of end_symtab to simplify it. Look for a subfile that |
742 | matches the main source file's basename. If there is only one, and | |
743 | if the main source file doesn't have any symbol or line number | |
744 | information, then copy this file's symtab and line_vector to the | |
745 | main source file's subfile and discard the other subfile. This can | |
746 | happen because of a compiler bug or from the user playing games | |
747 | with #line or from things like a distributed build system that | |
43f3e411 DE |
748 | manipulates the debug info. This can also happen from an innocent |
749 | symlink in the paths, we don't canonicalize paths here. */ | |
4584e32e | 750 | |
4a2125f5 TT |
751 | void |
752 | buildsym_compunit::watch_main_source_file_lossage () | |
4584e32e | 753 | { |
43f3e411 | 754 | struct subfile *mainsub, *subfile; |
4584e32e | 755 | |
43f3e411 | 756 | /* Get the main source file. */ |
cbb09508 | 757 | mainsub = m_main_subfile; |
43f3e411 | 758 | |
4a64f543 | 759 | /* If the main source file doesn't have any line number or symbol |
7bab9b58 | 760 | info, look for an alias in another subfile. */ |
4584e32e | 761 | |
43f3e411 DE |
762 | if (mainsub->line_vector == NULL |
763 | && mainsub->symtab == NULL) | |
4584e32e | 764 | { |
43f3e411 | 765 | const char *mainbase = lbasename (mainsub->name); |
4584e32e DE |
766 | int nr_matches = 0; |
767 | struct subfile *prevsub; | |
768 | struct subfile *mainsub_alias = NULL; | |
769 | struct subfile *prev_mainsub_alias = NULL; | |
770 | ||
771 | prevsub = NULL; | |
cbb09508 | 772 | for (subfile = m_subfiles; |
43f3e411 | 773 | subfile != NULL; |
4584e32e DE |
774 | subfile = subfile->next) |
775 | { | |
43f3e411 DE |
776 | if (subfile == mainsub) |
777 | continue; | |
0ba1096a | 778 | if (filename_cmp (lbasename (subfile->name), mainbase) == 0) |
4584e32e DE |
779 | { |
780 | ++nr_matches; | |
781 | mainsub_alias = subfile; | |
782 | prev_mainsub_alias = prevsub; | |
783 | } | |
784 | prevsub = subfile; | |
785 | } | |
786 | ||
787 | if (nr_matches == 1) | |
788 | { | |
43f3e411 | 789 | gdb_assert (mainsub_alias != NULL && mainsub_alias != mainsub); |
4584e32e DE |
790 | |
791 | /* Found a match for the main source file. | |
792 | Copy its line_vector and symtab to the main subfile | |
793 | and then discard it. */ | |
794 | ||
43f3e411 DE |
795 | mainsub->line_vector = mainsub_alias->line_vector; |
796 | mainsub->line_vector_length = mainsub_alias->line_vector_length; | |
797 | mainsub->symtab = mainsub_alias->symtab; | |
4584e32e DE |
798 | |
799 | if (prev_mainsub_alias == NULL) | |
cbb09508 | 800 | m_subfiles = mainsub_alias->next; |
4584e32e DE |
801 | else |
802 | prev_mainsub_alias->next = mainsub_alias->next; | |
98387a29 | 803 | xfree (mainsub_alias->name); |
4584e32e DE |
804 | xfree (mainsub_alias); |
805 | } | |
806 | } | |
807 | } | |
808 | ||
4359dff1 JK |
809 | /* Implementation of the first part of end_symtab. It allows modifying |
810 | STATIC_BLOCK before it gets finalized by end_symtab_from_static_block. | |
811 | If the returned value is NULL there is no blockvector created for | |
812 | this symtab (you still must call end_symtab_from_static_block). | |
c906108c | 813 | |
4359dff1 JK |
814 | END_ADDR is the same as for end_symtab: the address of the end of the |
815 | file's text. | |
c906108c | 816 | |
4359dff1 | 817 | If EXPANDABLE is non-zero the STATIC_BLOCK dictionary is made |
36586728 TT |
818 | expandable. |
819 | ||
820 | If REQUIRED is non-zero, then a symtab is created even if it does | |
821 | not contain any symbols. */ | |
6d30eef8 | 822 | |
4359dff1 | 823 | struct block * |
4a2125f5 TT |
824 | buildsym_compunit::end_symtab_get_static_block (CORE_ADDR end_addr, |
825 | int expandable, int required) | |
c906108c | 826 | { |
c906108c SS |
827 | /* Finish the lexical context of the last function in the file; pop |
828 | the context stack. */ | |
829 | ||
4a2125f5 | 830 | if (!m_context_stack.empty ()) |
c906108c | 831 | { |
a60f3166 | 832 | struct context_stack cstk = pop_context (); |
4359dff1 | 833 | |
c906108c | 834 | /* Make a block for the local symbols within. */ |
c233e9c6 | 835 | finish_block (cstk.name, cstk.old_blocks, NULL, |
a60f3166 | 836 | cstk.start_addr, end_addr); |
c906108c | 837 | |
4a2125f5 | 838 | if (!m_context_stack.empty ()) |
c906108c SS |
839 | { |
840 | /* This is said to happen with SCO. The old coffread.c | |
841 | code simply emptied the context stack, so we do the | |
842 | same. FIXME: Find out why it is happening. This is not | |
843 | believed to happen in most cases (even for coffread.c); | |
844 | it used to be an abort(). */ | |
b98664d3 | 845 | complaint (_("Context stack not empty in end_symtab")); |
4a2125f5 | 846 | m_context_stack.clear (); |
c906108c SS |
847 | } |
848 | } | |
849 | ||
850 | /* Reordered executables may have out of order pending blocks; if | |
851 | OBJF_REORDERED is true, then sort the pending blocks. */ | |
6d30eef8 | 852 | |
cbb09508 | 853 | if ((m_objfile->flags & OBJF_REORDERED) && m_pending_blocks) |
c906108c | 854 | { |
07e7f39f | 855 | struct pending_block *pb; |
c906108c | 856 | |
b05628f0 | 857 | std::vector<block *> barray; |
c906108c | 858 | |
4a2125f5 | 859 | for (pb = m_pending_blocks; pb != NULL; pb = pb->next) |
b05628f0 | 860 | barray.push_back (pb->block); |
07e7f39f | 861 | |
5033013f UW |
862 | /* Sort blocks by start address in descending order. Blocks with the |
863 | same start address must remain in the original order to preserve | |
864 | inline function caller/callee relationships. */ | |
865 | std::stable_sort (barray.begin (), barray.end (), | |
866 | [] (const block *a, const block *b) | |
867 | { | |
868 | return BLOCK_START (a) > BLOCK_START (b); | |
869 | }); | |
07e7f39f | 870 | |
b05628f0 | 871 | int i = 0; |
4a2125f5 | 872 | for (pb = m_pending_blocks; pb != NULL; pb = pb->next) |
b05628f0 | 873 | pb->block = barray[i++]; |
c906108c SS |
874 | } |
875 | ||
876 | /* Cleanup any undefined types that have been left hanging around | |
877 | (this needs to be done before the finish_blocks so that | |
878 | file_symbols is still good). | |
c5aa993b | 879 | |
0a0edcd5 | 880 | Both cleanup_undefined_stabs_types and finish_global_stabs are stabs |
c906108c SS |
881 | specific, but harmless for other symbol readers, since on gdb |
882 | startup or when finished reading stabs, the state is set so these | |
883 | are no-ops. FIXME: Is this handled right in case of QUIT? Can | |
884 | we make this cleaner? */ | |
885 | ||
cbb09508 KS |
886 | cleanup_undefined_stabs_types (m_objfile); |
887 | finish_global_stabs (m_objfile); | |
c906108c | 888 | |
36586728 | 889 | if (!required |
4a2125f5 TT |
890 | && m_pending_blocks == NULL |
891 | && m_file_symbols == NULL | |
892 | && m_global_symbols == NULL | |
893 | && !m_have_line_numbers | |
894 | && m_pending_macros == NULL | |
895 | && m_global_using_directives == NULL) | |
c906108c | 896 | { |
4359dff1 JK |
897 | /* Ignore symtabs that have no functions with real debugging info. */ |
898 | return NULL; | |
899 | } | |
900 | else | |
901 | { | |
902 | /* Define the STATIC_BLOCK. */ | |
e148f09d | 903 | return finish_block_internal (NULL, get_file_symbols (), NULL, NULL, |
4a2125f5 | 904 | m_last_source_start_addr, |
2c99ee5c | 905 | end_addr, 0, expandable); |
4359dff1 JK |
906 | } |
907 | } | |
908 | ||
7bab9b58 DE |
909 | /* Subroutine of end_symtab_from_static_block to simplify it. |
910 | Handle the "have blockvector" case. | |
911 | See end_symtab_from_static_block for a description of the arguments. */ | |
912 | ||
4a2125f5 TT |
913 | struct compunit_symtab * |
914 | buildsym_compunit::end_symtab_with_blockvector (struct block *static_block, | |
915 | int section, int expandable) | |
4359dff1 | 916 | { |
cbb09508 | 917 | struct compunit_symtab *cu = m_compunit_symtab; |
4359dff1 JK |
918 | struct blockvector *blockvector; |
919 | struct subfile *subfile; | |
7bab9b58 | 920 | CORE_ADDR end_addr; |
4359dff1 | 921 | |
7bab9b58 | 922 | gdb_assert (static_block != NULL); |
cbb09508 | 923 | gdb_assert (m_subfiles != NULL); |
7bab9b58 DE |
924 | |
925 | end_addr = BLOCK_END (static_block); | |
926 | ||
927 | /* Create the GLOBAL_BLOCK and build the blockvector. */ | |
e148f09d | 928 | finish_block_internal (NULL, get_global_symbols (), NULL, NULL, |
4a2125f5 | 929 | m_last_source_start_addr, end_addr, |
7bab9b58 | 930 | 1, expandable); |
43f3e411 | 931 | blockvector = make_blockvector (); |
c906108c | 932 | |
f56ce883 DE |
933 | /* Read the line table if it has to be read separately. |
934 | This is only used by xcoffread.c. */ | |
cbb09508 KS |
935 | if (m_objfile->sf->sym_read_linetable != NULL) |
936 | m_objfile->sf->sym_read_linetable (m_objfile); | |
c906108c | 937 | |
4584e32e DE |
938 | /* Handle the case where the debug info specifies a different path |
939 | for the main source file. It can cause us to lose track of its | |
940 | line number information. */ | |
941 | watch_main_source_file_lossage (); | |
942 | ||
43f3e411 DE |
943 | /* Now create the symtab objects proper, if not already done, |
944 | one for each subfile. */ | |
c906108c | 945 | |
cbb09508 | 946 | for (subfile = m_subfiles; |
43f3e411 DE |
947 | subfile != NULL; |
948 | subfile = subfile->next) | |
c906108c SS |
949 | { |
950 | int linetablesize = 0; | |
c906108c | 951 | |
7bab9b58 | 952 | if (subfile->line_vector) |
c906108c | 953 | { |
7bab9b58 DE |
954 | linetablesize = sizeof (struct linetable) + |
955 | subfile->line_vector->nitems * sizeof (struct linetable_entry); | |
956 | ||
957 | /* Like the pending blocks, the line table may be | |
958 | scrambled in reordered executables. Sort it if | |
959 | OBJF_REORDERED is true. */ | |
cbb09508 | 960 | if (m_objfile->flags & OBJF_REORDERED) |
39ef2f62 CB |
961 | std::sort (subfile->line_vector->item, |
962 | subfile->line_vector->item | |
963 | + subfile->line_vector->nitems, | |
964 | lte_is_less_than); | |
7bab9b58 | 965 | } |
9182c5bc | 966 | |
7bab9b58 DE |
967 | /* Allocate a symbol table if necessary. */ |
968 | if (subfile->symtab == NULL) | |
43f3e411 | 969 | subfile->symtab = allocate_symtab (cu, subfile->name); |
5accd1a0 | 970 | struct symtab *symtab = subfile->symtab; |
9182c5bc | 971 | |
7bab9b58 | 972 | /* Fill in its components. */ |
43f3e411 | 973 | |
7bab9b58 DE |
974 | if (subfile->line_vector) |
975 | { | |
976 | /* Reallocate the line table on the symbol obstack. */ | |
8435453b | 977 | SYMTAB_LINETABLE (symtab) = (struct linetable *) |
cbb09508 | 978 | obstack_alloc (&m_objfile->objfile_obstack, linetablesize); |
8435453b DE |
979 | memcpy (SYMTAB_LINETABLE (symtab), subfile->line_vector, |
980 | linetablesize); | |
c906108c | 981 | } |
24be086d | 982 | else |
c906108c | 983 | { |
8435453b | 984 | SYMTAB_LINETABLE (symtab) = NULL; |
c906108c | 985 | } |
c906108c | 986 | |
7bab9b58 DE |
987 | /* Use whatever language we have been using for this |
988 | subfile, not the one that was deduced in allocate_symtab | |
989 | from the filename. We already did our own deducing when | |
990 | we created the subfile, and we may have altered our | |
991 | opinion of what language it is from things we found in | |
992 | the symbols. */ | |
993 | symtab->language = subfile->language; | |
43f3e411 | 994 | } |
c906108c | 995 | |
43f3e411 DE |
996 | /* Make sure the symtab of main_subfile is the first in its list. */ |
997 | { | |
998 | struct symtab *main_symtab, *prev_symtab; | |
999 | ||
cbb09508 | 1000 | main_symtab = m_main_subfile->symtab; |
43f3e411 | 1001 | prev_symtab = NULL; |
5accd1a0 | 1002 | for (symtab *symtab : compunit_filetabs (cu)) |
43f3e411 DE |
1003 | { |
1004 | if (symtab == main_symtab) | |
1005 | { | |
1006 | if (prev_symtab != NULL) | |
1007 | { | |
1008 | prev_symtab->next = main_symtab->next; | |
1009 | main_symtab->next = COMPUNIT_FILETABS (cu); | |
1010 | COMPUNIT_FILETABS (cu) = main_symtab; | |
1011 | } | |
1012 | break; | |
1013 | } | |
1014 | prev_symtab = symtab; | |
1015 | } | |
1016 | gdb_assert (main_symtab == COMPUNIT_FILETABS (cu)); | |
1017 | } | |
84a146c9 | 1018 | |
0ab9ce85 | 1019 | /* Fill out the compunit symtab. */ |
84a146c9 | 1020 | |
cbb09508 | 1021 | if (m_comp_dir != NULL) |
43f3e411 DE |
1022 | { |
1023 | /* Reallocate the dirname on the symbol obstack. */ | |
cbb09508 | 1024 | const char *comp_dir = m_comp_dir.get (); |
021887d8 TT |
1025 | COMPUNIT_DIRNAME (cu) = obstack_strdup (&m_objfile->objfile_obstack, |
1026 | comp_dir); | |
c906108c SS |
1027 | } |
1028 | ||
43f3e411 | 1029 | /* Save the debug format string (if any) in the symtab. */ |
5922befa LM |
1030 | COMPUNIT_DEBUGFORMAT (cu) = obstack_strdup (&m_objfile->objfile_obstack, |
1031 | m_debugformat.get ()); | |
43f3e411 DE |
1032 | |
1033 | /* Similarly for the producer. */ | |
cbb09508 | 1034 | COMPUNIT_PRODUCER (cu) = m_producer; |
43f3e411 DE |
1035 | |
1036 | COMPUNIT_BLOCKVECTOR (cu) = blockvector; | |
7bab9b58 | 1037 | { |
43f3e411 | 1038 | struct block *b = BLOCKVECTOR_BLOCK (blockvector, GLOBAL_BLOCK); |
cb1df416 | 1039 | |
43f3e411 | 1040 | set_block_compunit_symtab (b, cu); |
7bab9b58 | 1041 | } |
cb1df416 | 1042 | |
43f3e411 DE |
1043 | COMPUNIT_BLOCK_LINE_SECTION (cu) = section; |
1044 | ||
4a2125f5 | 1045 | COMPUNIT_MACRO_TABLE (cu) = release_macros (); |
43f3e411 | 1046 | |
7bab9b58 DE |
1047 | /* Default any symbols without a specified symtab to the primary symtab. */ |
1048 | { | |
1049 | int block_i; | |
1050 | ||
43f3e411 | 1051 | /* The main source file's symtab. */ |
5accd1a0 | 1052 | struct symtab *symtab = COMPUNIT_FILETABS (cu); |
43f3e411 | 1053 | |
7bab9b58 DE |
1054 | for (block_i = 0; block_i < BLOCKVECTOR_NBLOCKS (blockvector); block_i++) |
1055 | { | |
1056 | struct block *block = BLOCKVECTOR_BLOCK (blockvector, block_i); | |
1057 | struct symbol *sym; | |
b026f593 | 1058 | struct mdict_iterator miter; |
7bab9b58 DE |
1059 | |
1060 | /* Inlined functions may have symbols not in the global or | |
1061 | static symbol lists. */ | |
1062 | if (BLOCK_FUNCTION (block) != NULL) | |
08be3fe3 DE |
1063 | if (symbol_symtab (BLOCK_FUNCTION (block)) == NULL) |
1064 | symbol_set_symtab (BLOCK_FUNCTION (block), symtab); | |
7bab9b58 DE |
1065 | |
1066 | /* Note that we only want to fix up symbols from the local | |
1067 | blocks, not blocks coming from included symtabs. That is why | |
1068 | we use ALL_DICT_SYMBOLS here and not ALL_BLOCK_SYMBOLS. */ | |
b026f593 | 1069 | ALL_DICT_SYMBOLS (BLOCK_MULTIDICT (block), miter, sym) |
08be3fe3 DE |
1070 | if (symbol_symtab (sym) == NULL) |
1071 | symbol_set_symtab (sym, symtab); | |
7bab9b58 DE |
1072 | } |
1073 | } | |
edb3359d | 1074 | |
43f3e411 | 1075 | add_compunit_symtab_to_objfile (cu); |
43f3e411 DE |
1076 | |
1077 | return cu; | |
7bab9b58 DE |
1078 | } |
1079 | ||
1080 | /* Implementation of the second part of end_symtab. Pass STATIC_BLOCK | |
1081 | as value returned by end_symtab_get_static_block. | |
1082 | ||
1083 | SECTION is the same as for end_symtab: the section number | |
1084 | (in objfile->section_offsets) of the blockvector and linetable. | |
1085 | ||
1086 | If EXPANDABLE is non-zero the GLOBAL_BLOCK dictionary is made | |
1087 | expandable. */ | |
1088 | ||
43f3e411 | 1089 | struct compunit_symtab * |
4a2125f5 TT |
1090 | buildsym_compunit::end_symtab_from_static_block (struct block *static_block, |
1091 | int section, int expandable) | |
7bab9b58 | 1092 | { |
43f3e411 | 1093 | struct compunit_symtab *cu; |
7bab9b58 DE |
1094 | |
1095 | if (static_block == NULL) | |
1096 | { | |
0ab9ce85 DE |
1097 | /* Handle the "no blockvector" case. |
1098 | When this happens there is nothing to record, so there's nothing | |
1099 | to do: memory will be freed up later. | |
1100 | ||
1101 | Note: We won't be adding a compunit to the objfile's list of | |
1102 | compunits, so there's nothing to unchain. However, since each symtab | |
1103 | is added to the objfile's obstack we can't free that space. | |
1104 | We could do better, but this is believed to be a sufficiently rare | |
1105 | event. */ | |
43f3e411 | 1106 | cu = NULL; |
7bab9b58 DE |
1107 | } |
1108 | else | |
43f3e411 | 1109 | cu = end_symtab_with_blockvector (static_block, section, expandable); |
cb1df416 | 1110 | |
43f3e411 | 1111 | return cu; |
6d30eef8 DE |
1112 | } |
1113 | ||
4359dff1 JK |
1114 | /* Finish the symbol definitions for one main source file, close off |
1115 | all the lexical contexts for that file (creating struct block's for | |
1116 | them), then make the struct symtab for that file and put it in the | |
1117 | list of all such. | |
1118 | ||
1119 | END_ADDR is the address of the end of the file's text. SECTION is | |
1120 | the section number (in objfile->section_offsets) of the blockvector | |
1121 | and linetable. | |
1122 | ||
1123 | Note that it is possible for end_symtab() to return NULL. In | |
1124 | particular, for the DWARF case at least, it will return NULL when | |
1125 | it finds a compilation unit that has exactly one DIE, a | |
1126 | TAG_compile_unit DIE. This can happen when we link in an object | |
1127 | file that was compiled from an empty source file. Returning NULL | |
1128 | is probably not the correct thing to do, because then gdb will | |
1129 | never know about this empty file (FIXME). | |
1130 | ||
1131 | If you need to modify STATIC_BLOCK before it is finalized you should | |
1132 | call end_symtab_get_static_block and end_symtab_from_static_block | |
1133 | yourself. */ | |
6d30eef8 | 1134 | |
43f3e411 | 1135 | struct compunit_symtab * |
4a2125f5 | 1136 | buildsym_compunit::end_symtab (CORE_ADDR end_addr, int section) |
6d30eef8 | 1137 | { |
4359dff1 JK |
1138 | struct block *static_block; |
1139 | ||
4d663531 DE |
1140 | static_block = end_symtab_get_static_block (end_addr, 0, 0); |
1141 | return end_symtab_from_static_block (static_block, section, 0); | |
6d30eef8 DE |
1142 | } |
1143 | ||
4359dff1 | 1144 | /* Same as end_symtab except create a symtab that can be later added to. */ |
6d30eef8 | 1145 | |
43f3e411 | 1146 | struct compunit_symtab * |
4a2125f5 | 1147 | buildsym_compunit::end_expandable_symtab (CORE_ADDR end_addr, int section) |
6d30eef8 | 1148 | { |
4359dff1 JK |
1149 | struct block *static_block; |
1150 | ||
4d663531 DE |
1151 | static_block = end_symtab_get_static_block (end_addr, 1, 0); |
1152 | return end_symtab_from_static_block (static_block, section, 1); | |
6d30eef8 DE |
1153 | } |
1154 | ||
1155 | /* Subroutine of augment_type_symtab to simplify it. | |
43f3e411 DE |
1156 | Attach the main source file's symtab to all symbols in PENDING_LIST that |
1157 | don't have one. */ | |
6d30eef8 DE |
1158 | |
1159 | static void | |
43f3e411 DE |
1160 | set_missing_symtab (struct pending *pending_list, |
1161 | struct compunit_symtab *cu) | |
6d30eef8 DE |
1162 | { |
1163 | struct pending *pending; | |
1164 | int i; | |
1165 | ||
1166 | for (pending = pending_list; pending != NULL; pending = pending->next) | |
801e3a5b | 1167 | { |
6d30eef8 DE |
1168 | for (i = 0; i < pending->nsyms; ++i) |
1169 | { | |
08be3fe3 DE |
1170 | if (symbol_symtab (pending->symbol[i]) == NULL) |
1171 | symbol_set_symtab (pending->symbol[i], COMPUNIT_FILETABS (cu)); | |
6d30eef8 | 1172 | } |
801e3a5b | 1173 | } |
6d30eef8 | 1174 | } |
c906108c | 1175 | |
6d30eef8 DE |
1176 | /* Same as end_symtab, but for the case where we're adding more symbols |
1177 | to an existing symtab that is known to contain only type information. | |
1178 | This is the case for DWARF4 Type Units. */ | |
1179 | ||
1180 | void | |
4a2125f5 | 1181 | buildsym_compunit::augment_type_symtab () |
6d30eef8 | 1182 | { |
cbb09508 | 1183 | struct compunit_symtab *cust = m_compunit_symtab; |
43f3e411 | 1184 | const struct blockvector *blockvector = COMPUNIT_BLOCKVECTOR (cust); |
6d30eef8 | 1185 | |
4a2125f5 | 1186 | if (!m_context_stack.empty ()) |
a60f3166 | 1187 | complaint (_("Context stack not empty in augment_type_symtab")); |
4a2125f5 | 1188 | if (m_pending_blocks != NULL) |
b98664d3 | 1189 | complaint (_("Blocks in a type symtab")); |
4a2125f5 | 1190 | if (m_pending_macros != NULL) |
b98664d3 | 1191 | complaint (_("Macro in a type symtab")); |
4a2125f5 | 1192 | if (m_have_line_numbers) |
b98664d3 | 1193 | complaint (_("Line numbers recorded in a type symtab")); |
6d30eef8 | 1194 | |
4a2125f5 | 1195 | if (m_file_symbols != NULL) |
6d30eef8 DE |
1196 | { |
1197 | struct block *block = BLOCKVECTOR_BLOCK (blockvector, STATIC_BLOCK); | |
1198 | ||
1199 | /* First mark any symbols without a specified symtab as belonging | |
1200 | to the primary symtab. */ | |
4a2125f5 | 1201 | set_missing_symtab (m_file_symbols, cust); |
6d30eef8 | 1202 | |
b026f593 | 1203 | mdict_add_pending (BLOCK_MULTIDICT (block), m_file_symbols); |
6d30eef8 DE |
1204 | } |
1205 | ||
4a2125f5 | 1206 | if (m_global_symbols != NULL) |
6d30eef8 DE |
1207 | { |
1208 | struct block *block = BLOCKVECTOR_BLOCK (blockvector, GLOBAL_BLOCK); | |
1209 | ||
1210 | /* First mark any symbols without a specified symtab as belonging | |
1211 | to the primary symtab. */ | |
4a2125f5 | 1212 | set_missing_symtab (m_global_symbols, cust); |
6d30eef8 | 1213 | |
b026f593 | 1214 | mdict_add_pending (BLOCK_MULTIDICT (block), |
4a2125f5 | 1215 | m_global_symbols); |
6d30eef8 | 1216 | } |
c906108c SS |
1217 | } |
1218 | ||
1219 | /* Push a context block. Args are an identifying nesting level | |
1220 | (checkable when you pop it), and the starting PC address of this | |
1221 | context. */ | |
1222 | ||
1223 | struct context_stack * | |
4a2125f5 | 1224 | buildsym_compunit::push_context (int desc, CORE_ADDR valu) |
c906108c | 1225 | { |
4a2125f5 TT |
1226 | m_context_stack.emplace_back (); |
1227 | struct context_stack *newobj = &m_context_stack.back (); | |
c906108c | 1228 | |
fe978cb0 | 1229 | newobj->depth = desc; |
4a2125f5 TT |
1230 | newobj->locals = m_local_symbols; |
1231 | newobj->old_blocks = m_pending_blocks; | |
fe978cb0 | 1232 | newobj->start_addr = valu; |
4a2125f5 | 1233 | newobj->local_using_directives = m_local_using_directives; |
fe978cb0 | 1234 | newobj->name = NULL; |
c906108c | 1235 | |
4a2125f5 TT |
1236 | m_local_symbols = NULL; |
1237 | m_local_using_directives = NULL; | |
c906108c | 1238 | |
fe978cb0 | 1239 | return newobj; |
c906108c | 1240 | } |
0c5e171a | 1241 | |
a672ef13 | 1242 | /* Pop a context block. Returns the address of the context block just |
4a64f543 | 1243 | popped. */ |
a672ef13 | 1244 | |
a60f3166 | 1245 | struct context_stack |
4a2125f5 | 1246 | buildsym_compunit::pop_context () |
0c5e171a | 1247 | { |
4a2125f5 TT |
1248 | gdb_assert (!m_context_stack.empty ()); |
1249 | struct context_stack result = m_context_stack.back (); | |
1250 | m_context_stack.pop_back (); | |
a60f3166 | 1251 | return result; |
0c5e171a | 1252 | } |