Commit | Line | Data |
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c906108c | 1 | /* Support routines for building symbol tables in GDB's internal format. |
e2882c85 | 2 | Copyright (C) 1986-2018 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 SS |
18 | |
19 | /* This module provides subroutines used for creating and adding to | |
20 | the symbol table. These routines are called from various symbol- | |
21 | file-reading routines. | |
22 | ||
23 | Routines to support specific debugging information formats (stabs, | |
0ab9ce85 DE |
24 | DWARF, etc) belong somewhere else. |
25 | ||
26 | The basic way this module is used is as follows: | |
27 | ||
28 | buildsym_init (); | |
33c7c59d | 29 | scoped_free_pendings free_pending; |
0ab9ce85 DE |
30 | cust = start_symtab (...); |
31 | ... read debug info ... | |
32 | cust = end_symtab (...); | |
0ab9ce85 DE |
33 | |
34 | The compunit symtab pointer ("cust") is returned from both start_symtab | |
35 | and end_symtab to simplify the debug info readers. | |
36 | ||
37 | There are minor variations on this, e.g., dwarf2read.c splits end_symtab | |
38 | into two calls: end_symtab_get_static_block, end_symtab_from_static_block, | |
39 | but all debug info readers follow this basic flow. | |
40 | ||
41 | Reading DWARF Type Units is another variation: | |
42 | ||
43 | buildsym_init (); | |
33c7c59d | 44 | scoped_free_pendings free_pending; |
0ab9ce85 DE |
45 | cust = start_symtab (...); |
46 | ... read debug info ... | |
47 | cust = end_expandable_symtab (...); | |
0ab9ce85 DE |
48 | |
49 | And then reading subsequent Type Units within the containing "Comp Unit" | |
50 | will use a second flow: | |
51 | ||
52 | buildsym_init (); | |
33c7c59d | 53 | scoped_free_pendings free_pending; |
0ab9ce85 DE |
54 | cust = restart_symtab (...); |
55 | ... read debug info ... | |
56 | cust = augment_type_symtab (...); | |
0ab9ce85 DE |
57 | |
58 | dbxread.c and xcoffread.c use another variation: | |
59 | ||
60 | buildsym_init (); | |
33c7c59d | 61 | scoped_free_pendings free_pending; |
0ab9ce85 DE |
62 | cust = start_symtab (...); |
63 | ... read debug info ... | |
64 | cust = end_symtab (...); | |
65 | ... start_symtab + read + end_symtab repeated ... | |
0ab9ce85 | 66 | */ |
c906108c SS |
67 | |
68 | #include "defs.h" | |
69 | #include "bfd.h" | |
04ea0df1 | 70 | #include "gdb_obstack.h" |
c906108c | 71 | #include "symtab.h" |
72367fb4 | 72 | #include "symfile.h" |
c906108c SS |
73 | #include "objfiles.h" |
74 | #include "gdbtypes.h" | |
75 | #include "complaints.h" | |
4a64f543 | 76 | #include "expression.h" /* For "enum exp_opcode" used by... */ |
357e46e7 | 77 | #include "bcache.h" |
4a64f543 | 78 | #include "filenames.h" /* For DOSish file names. */ |
99d9066e | 79 | #include "macrotab.h" |
261397f8 | 80 | #include "demangle.h" /* Needed by SYMBOL_INIT_DEMANGLED_NAME. */ |
fe898f56 | 81 | #include "block.h" |
9219021c | 82 | #include "cp-support.h" |
de4f826b | 83 | #include "dictionary.h" |
801e3a5b | 84 | #include "addrmap.h" |
b05628f0 | 85 | #include <algorithm> |
9219021c | 86 | |
c906108c | 87 | /* Ask buildsym.h to define the vars it normally declares `extern'. */ |
c5aa993b JM |
88 | #define EXTERN |
89 | /**/ | |
4a64f543 | 90 | #include "buildsym.h" /* Our own declarations. */ |
c906108c SS |
91 | #undef EXTERN |
92 | ||
0a0edcd5 | 93 | /* For cleanup_undefined_stabs_types and finish_global_stabs (somewhat |
c906108c SS |
94 | questionable--see comment where we call them). */ |
95 | ||
96 | #include "stabsread.h" | |
97 | ||
43f3e411 DE |
98 | /* Buildsym's counterpart to struct compunit_symtab. |
99 | TODO(dje): Move all related global state into here. */ | |
4d663531 | 100 | |
43f3e411 DE |
101 | struct buildsym_compunit |
102 | { | |
b248663f TT |
103 | /* Start recording information about a primary source file (IOW, not an |
104 | included source file). | |
105 | COMP_DIR is the directory in which the compilation unit was compiled | |
106 | (or NULL if not known). */ | |
107 | ||
c0015d44 TT |
108 | buildsym_compunit (struct objfile *objfile_, const char *name, |
109 | const char *comp_dir_, enum language language_) | |
b248663f | 110 | : objfile (objfile_), |
c0015d44 | 111 | m_last_source_file (name == nullptr ? nullptr : xstrdup (name)), |
b248663f TT |
112 | comp_dir (comp_dir_ == nullptr ? nullptr : xstrdup (comp_dir_)), |
113 | language (language_) | |
114 | { | |
115 | } | |
116 | ||
117 | ~buildsym_compunit () | |
118 | { | |
119 | struct subfile *subfile, *nextsub; | |
120 | ||
6a976300 TT |
121 | if (m_pending_macros != nullptr) |
122 | free_macro_table (m_pending_macros); | |
123 | ||
b248663f TT |
124 | for (subfile = subfiles; |
125 | subfile != NULL; | |
126 | subfile = nextsub) | |
127 | { | |
128 | nextsub = subfile->next; | |
129 | xfree (subfile->name); | |
130 | xfree (subfile->line_vector); | |
131 | xfree (subfile); | |
132 | } | |
b248663f TT |
133 | } |
134 | ||
c0015d44 TT |
135 | void set_last_source_file (const char *name) |
136 | { | |
137 | char *new_name = name == NULL ? NULL : xstrdup (name); | |
138 | m_last_source_file.reset (new_name); | |
139 | } | |
140 | ||
6a976300 TT |
141 | struct macro_table *get_macro_table () |
142 | { | |
143 | if (m_pending_macros == nullptr) | |
144 | m_pending_macros = new_macro_table (&objfile->per_bfd->storage_obstack, | |
145 | objfile->per_bfd->macro_cache, | |
146 | compunit_symtab); | |
147 | return m_pending_macros; | |
148 | } | |
149 | ||
150 | struct macro_table *release_macros () | |
151 | { | |
152 | struct macro_table *result = m_pending_macros; | |
153 | m_pending_macros = nullptr; | |
154 | return result; | |
155 | } | |
156 | ||
43f3e411 DE |
157 | /* The objfile we're reading debug info from. */ |
158 | struct objfile *objfile; | |
159 | ||
160 | /* List of subfiles (source files). | |
161 | Files are added to the front of the list. | |
162 | This is important mostly for the language determination hacks we use, | |
163 | which iterate over previously added files. */ | |
b248663f | 164 | struct subfile *subfiles = nullptr; |
43f3e411 DE |
165 | |
166 | /* The subfile of the main source file. */ | |
b248663f | 167 | struct subfile *main_subfile = nullptr; |
4d663531 | 168 | |
c0015d44 TT |
169 | /* Name of source file whose symbol data we are now processing. This |
170 | comes from a symbol of type N_SO for stabs. For DWARF it comes | |
171 | from the DW_AT_name attribute of a DW_TAG_compile_unit DIE. */ | |
172 | gdb::unique_xmalloc_ptr<char> m_last_source_file; | |
173 | ||
43f3e411 | 174 | /* E.g., DW_AT_comp_dir if DWARF. Space for this is malloc'd. */ |
905eb0e2 | 175 | gdb::unique_xmalloc_ptr<char> comp_dir; |
4d663531 | 176 | |
43f3e411 DE |
177 | /* Space for this is not malloc'd, and is assumed to have at least |
178 | the same lifetime as objfile. */ | |
b248663f | 179 | const char *producer = nullptr; |
4d663531 | 180 | |
43f3e411 DE |
181 | /* Space for this is not malloc'd, and is assumed to have at least |
182 | the same lifetime as objfile. */ | |
b248663f | 183 | const char *debugformat = nullptr; |
94d09e04 | 184 | |
43f3e411 | 185 | /* The compunit we are building. */ |
b248663f | 186 | struct compunit_symtab *compunit_symtab = nullptr; |
5ffa0793 PA |
187 | |
188 | /* Language of this compunit_symtab. */ | |
189 | enum language language; | |
6a976300 TT |
190 | |
191 | /* The macro table for the compilation unit whose symbols we're | |
192 | currently reading. */ | |
193 | struct macro_table *m_pending_macros = nullptr; | |
530fedbc TT |
194 | |
195 | /* True if symtab has line number info. This prevents an otherwise | |
196 | empty symtab from being tossed. */ | |
197 | bool m_have_line_numbers = false; | |
43f3e411 | 198 | }; |
94d09e04 | 199 | |
43f3e411 DE |
200 | /* The work-in-progress of the compunit we are building. |
201 | This is created first, before any subfiles by start_symtab. */ | |
7bab9b58 | 202 | |
43f3e411 | 203 | static struct buildsym_compunit *buildsym_compunit; |
7bab9b58 | 204 | |
c906108c SS |
205 | /* List of free `struct pending' structures for reuse. */ |
206 | ||
207 | static struct pending *free_pendings; | |
208 | ||
801e3a5b JB |
209 | /* The mutable address map for the compilation unit whose symbols |
210 | we're currently reading. The symtabs' shared blockvector will | |
211 | point to a fixed copy of this. */ | |
212 | static struct addrmap *pending_addrmap; | |
213 | ||
214 | /* The obstack on which we allocate pending_addrmap. | |
215 | If pending_addrmap is NULL, this is uninitialized; otherwise, it is | |
216 | initialized (and holds pending_addrmap). */ | |
217 | static struct obstack pending_addrmap_obstack; | |
218 | ||
219 | /* Non-zero if we recorded any ranges in the addrmap that are | |
220 | different from those in the blockvector already. We set this to | |
221 | zero when we start processing a symfile, and if it's still zero at | |
222 | the end, then we just toss the addrmap. */ | |
223 | static int pending_addrmap_interesting; | |
224 | ||
93eed41f TT |
225 | /* An obstack used for allocating pending blocks. */ |
226 | ||
227 | static struct obstack pending_block_obstack; | |
228 | ||
229 | /* List of blocks already made (lexical contexts already closed). | |
230 | This is used at the end to make the blockvector. */ | |
231 | ||
232 | struct pending_block | |
233 | { | |
234 | struct pending_block *next; | |
235 | struct block *block; | |
236 | }; | |
237 | ||
238 | /* Pointer to the head of a linked list of symbol blocks which have | |
239 | already been finalized (lexical contexts already closed) and which | |
240 | are just waiting to be built into a blockvector when finalizing the | |
241 | associated symtab. */ | |
242 | ||
243 | static struct pending_block *pending_blocks; | |
fc474241 DE |
244 | |
245 | struct subfile_stack | |
246 | { | |
247 | struct subfile_stack *next; | |
248 | char *name; | |
249 | }; | |
250 | ||
251 | static struct subfile_stack *subfile_stack; | |
252 | ||
0ab9ce85 DE |
253 | static void free_buildsym_compunit (void); |
254 | ||
c906108c | 255 | static int compare_line_numbers (const void *ln1p, const void *ln2p); |
0b49e518 TT |
256 | |
257 | static void record_pending_block (struct objfile *objfile, | |
258 | struct block *block, | |
259 | struct pending_block *opblock); | |
c906108c SS |
260 | |
261 | /* Initial sizes of data structures. These are realloc'd larger if | |
262 | needed, and realloc'd down to the size actually used, when | |
263 | completed. */ | |
264 | ||
265 | #define INITIAL_CONTEXT_STACK_SIZE 10 | |
266 | #define INITIAL_LINE_VECTOR_LENGTH 1000 | |
267 | \f | |
268 | ||
4a64f543 | 269 | /* Maintain the lists of symbols and blocks. */ |
c906108c | 270 | |
93bf33fd | 271 | /* Add a symbol to one of the lists of symbols. */ |
c906108c SS |
272 | |
273 | void | |
274 | add_symbol_to_list (struct symbol *symbol, struct pending **listhead) | |
275 | { | |
52f0bd74 | 276 | struct pending *link; |
c906108c SS |
277 | |
278 | /* If this is an alias for another symbol, don't add it. */ | |
279 | if (symbol->ginfo.name && symbol->ginfo.name[0] == '#') | |
280 | return; | |
281 | ||
4a64f543 | 282 | /* We keep PENDINGSIZE symbols in each link of the list. If we |
c906108c SS |
283 | don't have a link with room in it, add a new link. */ |
284 | if (*listhead == NULL || (*listhead)->nsyms == PENDINGSIZE) | |
285 | { | |
286 | if (free_pendings) | |
287 | { | |
288 | link = free_pendings; | |
289 | free_pendings = link->next; | |
290 | } | |
291 | else | |
292 | { | |
8d749320 | 293 | link = XNEW (struct pending); |
c906108c SS |
294 | } |
295 | ||
296 | link->next = *listhead; | |
297 | *listhead = link; | |
298 | link->nsyms = 0; | |
299 | } | |
300 | ||
301 | (*listhead)->symbol[(*listhead)->nsyms++] = symbol; | |
302 | } | |
303 | ||
304 | /* Find a symbol named NAME on a LIST. NAME need not be | |
305 | '\0'-terminated; LENGTH is the length of the name. */ | |
306 | ||
307 | struct symbol * | |
308 | find_symbol_in_list (struct pending *list, char *name, int length) | |
309 | { | |
310 | int j; | |
0d5cff50 | 311 | const char *pp; |
c906108c SS |
312 | |
313 | while (list != NULL) | |
314 | { | |
315 | for (j = list->nsyms; --j >= 0;) | |
316 | { | |
3567439c | 317 | pp = SYMBOL_LINKAGE_NAME (list->symbol[j]); |
5aafa1cc PM |
318 | if (*pp == *name && strncmp (pp, name, length) == 0 |
319 | && pp[length] == '\0') | |
c906108c SS |
320 | { |
321 | return (list->symbol[j]); | |
322 | } | |
323 | } | |
324 | list = list->next; | |
325 | } | |
326 | return (NULL); | |
327 | } | |
328 | ||
33c7c59d TT |
329 | /* At end of reading syms, or in case of quit, ensure everything |
330 | associated with building symtabs is freed. | |
0ab9ce85 DE |
331 | |
332 | N.B. This is *not* intended to be used when building psymtabs. Some debug | |
333 | info readers call this anyway, which is harmless if confusing. */ | |
c906108c | 334 | |
33c7c59d | 335 | scoped_free_pendings::~scoped_free_pendings () |
c906108c SS |
336 | { |
337 | struct pending *next, *next1; | |
338 | ||
339 | for (next = free_pendings; next; next = next1) | |
340 | { | |
341 | next1 = next->next; | |
b8c9b27d | 342 | xfree ((void *) next); |
c906108c SS |
343 | } |
344 | free_pendings = NULL; | |
345 | ||
346 | free_pending_blocks (); | |
347 | ||
348 | for (next = file_symbols; next != NULL; next = next1) | |
349 | { | |
350 | next1 = next->next; | |
b8c9b27d | 351 | xfree ((void *) next); |
c906108c SS |
352 | } |
353 | file_symbols = NULL; | |
354 | ||
355 | for (next = global_symbols; next != NULL; next = next1) | |
356 | { | |
357 | next1 = next->next; | |
b8c9b27d | 358 | xfree ((void *) next); |
c906108c SS |
359 | } |
360 | global_symbols = NULL; | |
99d9066e | 361 | |
801e3a5b | 362 | if (pending_addrmap) |
0ab9ce85 DE |
363 | obstack_free (&pending_addrmap_obstack, NULL); |
364 | pending_addrmap = NULL; | |
365 | ||
366 | free_buildsym_compunit (); | |
c906108c SS |
367 | } |
368 | ||
4a64f543 | 369 | /* This function is called to discard any pending blocks. */ |
c906108c SS |
370 | |
371 | void | |
372 | free_pending_blocks (void) | |
373 | { | |
93eed41f TT |
374 | if (pending_blocks != NULL) |
375 | { | |
376 | obstack_free (&pending_block_obstack, NULL); | |
377 | pending_blocks = NULL; | |
378 | } | |
c906108c SS |
379 | } |
380 | ||
381 | /* Take one of the lists of symbols and make a block from it. Keep | |
382 | the order the symbols have in the list (reversed from the input | |
383 | file). Put the block on the list of pending blocks. */ | |
384 | ||
84a146c9 | 385 | static struct block * |
63e43d3a PMR |
386 | finish_block_internal (struct symbol *symbol, |
387 | struct pending **listhead, | |
84a146c9 | 388 | struct pending_block *old_blocks, |
63e43d3a | 389 | const struct dynamic_prop *static_link, |
84a146c9 | 390 | CORE_ADDR start, CORE_ADDR end, |
6d30eef8 | 391 | int is_global, int expandable) |
c906108c | 392 | { |
43f3e411 | 393 | struct objfile *objfile = buildsym_compunit->objfile; |
5af949e3 | 394 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 AC |
395 | struct pending *next, *next1; |
396 | struct block *block; | |
397 | struct pending_block *pblock; | |
c906108c | 398 | struct pending_block *opblock; |
c906108c | 399 | |
84a146c9 TT |
400 | block = (is_global |
401 | ? allocate_global_block (&objfile->objfile_obstack) | |
402 | : allocate_block (&objfile->objfile_obstack)); | |
c906108c | 403 | |
261397f8 DJ |
404 | if (symbol) |
405 | { | |
5ffa0793 PA |
406 | BLOCK_DICT (block) |
407 | = dict_create_linear (&objfile->objfile_obstack, | |
408 | buildsym_compunit->language, *listhead); | |
261397f8 DJ |
409 | } |
410 | else | |
c906108c | 411 | { |
6d30eef8 DE |
412 | if (expandable) |
413 | { | |
5ffa0793 PA |
414 | BLOCK_DICT (block) |
415 | = dict_create_hashed_expandable (buildsym_compunit->language); | |
6d30eef8 DE |
416 | dict_add_pending (BLOCK_DICT (block), *listhead); |
417 | } | |
418 | else | |
419 | { | |
420 | BLOCK_DICT (block) = | |
5ffa0793 PA |
421 | dict_create_hashed (&objfile->objfile_obstack, |
422 | buildsym_compunit->language, *listhead); | |
6d30eef8 | 423 | } |
c906108c SS |
424 | } |
425 | ||
426 | BLOCK_START (block) = start; | |
427 | BLOCK_END (block) = end; | |
c906108c | 428 | |
c906108c SS |
429 | /* Put the block in as the value of the symbol that names it. */ |
430 | ||
431 | if (symbol) | |
432 | { | |
433 | struct type *ftype = SYMBOL_TYPE (symbol); | |
de4f826b | 434 | struct dict_iterator iter; |
c906108c SS |
435 | SYMBOL_BLOCK_VALUE (symbol) = block; |
436 | BLOCK_FUNCTION (block) = symbol; | |
437 | ||
438 | if (TYPE_NFIELDS (ftype) <= 0) | |
439 | { | |
440 | /* No parameter type information is recorded with the | |
441 | function's type. Set that from the type of the | |
4a64f543 | 442 | parameter symbols. */ |
c906108c SS |
443 | int nparams = 0, iparams; |
444 | struct symbol *sym; | |
8157b174 TT |
445 | |
446 | /* Here we want to directly access the dictionary, because | |
447 | we haven't fully initialized the block yet. */ | |
448 | ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym) | |
c906108c | 449 | { |
2a2d4dc3 AS |
450 | if (SYMBOL_IS_ARGUMENT (sym)) |
451 | nparams++; | |
c906108c SS |
452 | } |
453 | if (nparams > 0) | |
454 | { | |
455 | TYPE_NFIELDS (ftype) = nparams; | |
456 | TYPE_FIELDS (ftype) = (struct field *) | |
457 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
458 | ||
de4f826b | 459 | iparams = 0; |
8157b174 TT |
460 | /* Here we want to directly access the dictionary, because |
461 | we haven't fully initialized the block yet. */ | |
462 | ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym) | |
c906108c | 463 | { |
de4f826b DC |
464 | if (iparams == nparams) |
465 | break; | |
466 | ||
2a2d4dc3 | 467 | if (SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 468 | { |
c906108c | 469 | TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym); |
8176bb6d | 470 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c | 471 | iparams++; |
c906108c SS |
472 | } |
473 | } | |
474 | } | |
475 | } | |
476 | } | |
477 | else | |
478 | { | |
479 | BLOCK_FUNCTION (block) = NULL; | |
480 | } | |
481 | ||
63e43d3a PMR |
482 | if (static_link != NULL) |
483 | objfile_register_static_link (objfile, block, static_link); | |
484 | ||
c906108c SS |
485 | /* Now "free" the links of the list, and empty the list. */ |
486 | ||
487 | for (next = *listhead; next; next = next1) | |
488 | { | |
489 | next1 = next->next; | |
490 | next->next = free_pendings; | |
491 | free_pendings = next; | |
492 | } | |
493 | *listhead = NULL; | |
494 | ||
c906108c | 495 | /* Check to be sure that the blocks have an end address that is |
4a64f543 | 496 | greater than starting address. */ |
c906108c SS |
497 | |
498 | if (BLOCK_END (block) < BLOCK_START (block)) | |
499 | { | |
500 | if (symbol) | |
501 | { | |
b98664d3 | 502 | complaint (_("block end address less than block " |
3e43a32a | 503 | "start address in %s (patched it)"), |
de5ad195 | 504 | SYMBOL_PRINT_NAME (symbol)); |
c906108c SS |
505 | } |
506 | else | |
507 | { | |
b98664d3 | 508 | complaint (_("block end address %s less than block " |
3e43a32a | 509 | "start address %s (patched it)"), |
5af949e3 UW |
510 | paddress (gdbarch, BLOCK_END (block)), |
511 | paddress (gdbarch, BLOCK_START (block))); | |
c906108c | 512 | } |
4a64f543 | 513 | /* Better than nothing. */ |
c906108c SS |
514 | BLOCK_END (block) = BLOCK_START (block); |
515 | } | |
c906108c SS |
516 | |
517 | /* Install this block as the superblock of all blocks made since the | |
518 | start of this scope that don't have superblocks yet. */ | |
519 | ||
520 | opblock = NULL; | |
c0219d42 MS |
521 | for (pblock = pending_blocks; |
522 | pblock && pblock != old_blocks; | |
523 | pblock = pblock->next) | |
c906108c SS |
524 | { |
525 | if (BLOCK_SUPERBLOCK (pblock->block) == NULL) | |
526 | { | |
c906108c | 527 | /* Check to be sure the blocks are nested as we receive |
4a64f543 | 528 | them. If the compiler/assembler/linker work, this just |
14711c82 DJ |
529 | burns a small amount of time. |
530 | ||
531 | Skip blocks which correspond to a function; they're not | |
532 | physically nested inside this other blocks, only | |
533 | lexically nested. */ | |
534 | if (BLOCK_FUNCTION (pblock->block) == NULL | |
535 | && (BLOCK_START (pblock->block) < BLOCK_START (block) | |
536 | || BLOCK_END (pblock->block) > BLOCK_END (block))) | |
c906108c SS |
537 | { |
538 | if (symbol) | |
539 | { | |
b98664d3 | 540 | complaint (_("inner block not inside outer block in %s"), |
de5ad195 | 541 | SYMBOL_PRINT_NAME (symbol)); |
c906108c SS |
542 | } |
543 | else | |
544 | { | |
b98664d3 | 545 | complaint (_("inner block (%s-%s) not " |
3e43a32a | 546 | "inside outer block (%s-%s)"), |
5af949e3 UW |
547 | paddress (gdbarch, BLOCK_START (pblock->block)), |
548 | paddress (gdbarch, BLOCK_END (pblock->block)), | |
549 | paddress (gdbarch, BLOCK_START (block)), | |
550 | paddress (gdbarch, BLOCK_END (block))); | |
c906108c SS |
551 | } |
552 | if (BLOCK_START (pblock->block) < BLOCK_START (block)) | |
553 | BLOCK_START (pblock->block) = BLOCK_START (block); | |
554 | if (BLOCK_END (pblock->block) > BLOCK_END (block)) | |
555 | BLOCK_END (pblock->block) = BLOCK_END (block); | |
556 | } | |
c906108c SS |
557 | BLOCK_SUPERBLOCK (pblock->block) = block; |
558 | } | |
559 | opblock = pblock; | |
560 | } | |
561 | ||
22cee43f PMR |
562 | block_set_using (block, |
563 | (is_global | |
564 | ? global_using_directives | |
565 | : local_using_directives), | |
566 | &objfile->objfile_obstack); | |
567 | if (is_global) | |
568 | global_using_directives = NULL; | |
569 | else | |
570 | local_using_directives = NULL; | |
27aa8d6a | 571 | |
c906108c | 572 | record_pending_block (objfile, block, opblock); |
801e3a5b JB |
573 | |
574 | return block; | |
c906108c SS |
575 | } |
576 | ||
84a146c9 | 577 | struct block * |
63e43d3a PMR |
578 | finish_block (struct symbol *symbol, |
579 | struct pending **listhead, | |
84a146c9 | 580 | struct pending_block *old_blocks, |
63e43d3a | 581 | const struct dynamic_prop *static_link, |
4d663531 | 582 | CORE_ADDR start, CORE_ADDR end) |
84a146c9 | 583 | { |
63e43d3a | 584 | return finish_block_internal (symbol, listhead, old_blocks, static_link, |
4d663531 | 585 | start, end, 0, 0); |
84a146c9 | 586 | } |
de4f826b | 587 | |
c906108c SS |
588 | /* Record BLOCK on the list of all blocks in the file. Put it after |
589 | OPBLOCK, or at the beginning if opblock is NULL. This puts the | |
590 | block in the list after all its subblocks. | |
591 | ||
4a146b47 | 592 | Allocate the pending block struct in the objfile_obstack to save |
c906108c SS |
593 | time. This wastes a little space. FIXME: Is it worth it? */ |
594 | ||
0b49e518 | 595 | static void |
c906108c SS |
596 | record_pending_block (struct objfile *objfile, struct block *block, |
597 | struct pending_block *opblock) | |
598 | { | |
52f0bd74 | 599 | struct pending_block *pblock; |
c906108c | 600 | |
93eed41f TT |
601 | if (pending_blocks == NULL) |
602 | obstack_init (&pending_block_obstack); | |
603 | ||
8d749320 | 604 | pblock = XOBNEW (&pending_block_obstack, struct pending_block); |
c906108c SS |
605 | pblock->block = block; |
606 | if (opblock) | |
607 | { | |
608 | pblock->next = opblock->next; | |
609 | opblock->next = pblock; | |
610 | } | |
611 | else | |
612 | { | |
613 | pblock->next = pending_blocks; | |
614 | pending_blocks = pblock; | |
615 | } | |
616 | } | |
617 | ||
801e3a5b JB |
618 | |
619 | /* Record that the range of addresses from START to END_INCLUSIVE | |
620 | (inclusive, like it says) belongs to BLOCK. BLOCK's start and end | |
621 | addresses must be set already. You must apply this function to all | |
622 | BLOCK's children before applying it to BLOCK. | |
623 | ||
624 | If a call to this function complicates the picture beyond that | |
625 | already provided by BLOCK_START and BLOCK_END, then we create an | |
626 | address map for the block. */ | |
627 | void | |
628 | record_block_range (struct block *block, | |
629 | CORE_ADDR start, CORE_ADDR end_inclusive) | |
630 | { | |
631 | /* If this is any different from the range recorded in the block's | |
632 | own BLOCK_START and BLOCK_END, then note that the address map has | |
633 | become interesting. Note that even if this block doesn't have | |
634 | any "interesting" ranges, some later block might, so we still | |
635 | need to record this block in the addrmap. */ | |
636 | if (start != BLOCK_START (block) | |
637 | || end_inclusive + 1 != BLOCK_END (block)) | |
638 | pending_addrmap_interesting = 1; | |
639 | ||
640 | if (! pending_addrmap) | |
641 | { | |
642 | obstack_init (&pending_addrmap_obstack); | |
643 | pending_addrmap = addrmap_create_mutable (&pending_addrmap_obstack); | |
644 | } | |
645 | ||
646 | addrmap_set_empty (pending_addrmap, start, end_inclusive, block); | |
647 | } | |
648 | ||
822e978b | 649 | static struct blockvector * |
43f3e411 | 650 | make_blockvector (void) |
c906108c | 651 | { |
43f3e411 | 652 | struct objfile *objfile = buildsym_compunit->objfile; |
52f0bd74 AC |
653 | struct pending_block *next; |
654 | struct blockvector *blockvector; | |
655 | int i; | |
c906108c SS |
656 | |
657 | /* Count the length of the list of blocks. */ | |
658 | ||
659 | for (next = pending_blocks, i = 0; next; next = next->next, i++) | |
660 | {; | |
661 | } | |
662 | ||
663 | blockvector = (struct blockvector *) | |
4a146b47 | 664 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
665 | (sizeof (struct blockvector) |
666 | + (i - 1) * sizeof (struct block *))); | |
667 | ||
4a64f543 | 668 | /* Copy the blocks into the blockvector. This is done in reverse |
c906108c | 669 | order, which happens to put the blocks into the proper order |
4a64f543 | 670 | (ascending starting address). finish_block has hair to insert |
c906108c SS |
671 | each block into the list after its subblocks in order to make |
672 | sure this is true. */ | |
673 | ||
674 | BLOCKVECTOR_NBLOCKS (blockvector) = i; | |
675 | for (next = pending_blocks; next; next = next->next) | |
676 | { | |
677 | BLOCKVECTOR_BLOCK (blockvector, --i) = next->block; | |
678 | } | |
679 | ||
89ba75b1 | 680 | free_pending_blocks (); |
c906108c | 681 | |
801e3a5b JB |
682 | /* If we needed an address map for this symtab, record it in the |
683 | blockvector. */ | |
684 | if (pending_addrmap && pending_addrmap_interesting) | |
685 | BLOCKVECTOR_MAP (blockvector) | |
686 | = addrmap_create_fixed (pending_addrmap, &objfile->objfile_obstack); | |
687 | else | |
688 | BLOCKVECTOR_MAP (blockvector) = 0; | |
4aad0dfc | 689 | |
c906108c | 690 | /* Some compilers output blocks in the wrong order, but we depend on |
4a64f543 | 691 | their being in the right order so we can binary search. Check the |
4aad0dfc DE |
692 | order and moan about it. |
693 | Note: Remember that the first two blocks are the global and static | |
694 | blocks. We could special case that fact and begin checking at block 2. | |
695 | To avoid making that assumption we do not. */ | |
c906108c SS |
696 | if (BLOCKVECTOR_NBLOCKS (blockvector) > 1) |
697 | { | |
698 | for (i = 1; i < BLOCKVECTOR_NBLOCKS (blockvector); i++) | |
699 | { | |
700 | if (BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i - 1)) | |
701 | > BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i))) | |
702 | { | |
59527da0 JB |
703 | CORE_ADDR start |
704 | = BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i)); | |
c906108c | 705 | |
b98664d3 | 706 | complaint (_("block at %s out of order"), |
bb599908 | 707 | hex_string ((LONGEST) start)); |
c906108c SS |
708 | } |
709 | } | |
710 | } | |
c906108c SS |
711 | |
712 | return (blockvector); | |
713 | } | |
714 | \f | |
715 | /* Start recording information about source code that came from an | |
716 | included (or otherwise merged-in) source file with a different | |
4d663531 | 717 | name. NAME is the name of the file (cannot be NULL). */ |
c906108c SS |
718 | |
719 | void | |
4d663531 | 720 | start_subfile (const char *name) |
c906108c | 721 | { |
43f3e411 | 722 | const char *subfile_dirname; |
52f0bd74 | 723 | struct subfile *subfile; |
c906108c | 724 | |
43f3e411 DE |
725 | gdb_assert (buildsym_compunit != NULL); |
726 | ||
905eb0e2 | 727 | subfile_dirname = buildsym_compunit->comp_dir.get (); |
c906108c | 728 | |
43f3e411 DE |
729 | /* See if this subfile is already registered. */ |
730 | ||
731 | for (subfile = buildsym_compunit->subfiles; subfile; subfile = subfile->next) | |
c906108c | 732 | { |
84ba0adf DJ |
733 | char *subfile_name; |
734 | ||
735 | /* If NAME is an absolute path, and this subfile is not, then | |
736 | attempt to create an absolute path to compare. */ | |
737 | if (IS_ABSOLUTE_PATH (name) | |
738 | && !IS_ABSOLUTE_PATH (subfile->name) | |
43f3e411 DE |
739 | && subfile_dirname != NULL) |
740 | subfile_name = concat (subfile_dirname, SLASH_STRING, | |
6eb7ee03 | 741 | subfile->name, (char *) NULL); |
84ba0adf DJ |
742 | else |
743 | subfile_name = subfile->name; | |
744 | ||
745 | if (FILENAME_CMP (subfile_name, name) == 0) | |
c906108c SS |
746 | { |
747 | current_subfile = subfile; | |
84ba0adf DJ |
748 | if (subfile_name != subfile->name) |
749 | xfree (subfile_name); | |
c906108c SS |
750 | return; |
751 | } | |
84ba0adf DJ |
752 | if (subfile_name != subfile->name) |
753 | xfree (subfile_name); | |
c906108c SS |
754 | } |
755 | ||
43f3e411 | 756 | /* This subfile is not known. Add an entry for it. */ |
c906108c | 757 | |
8d749320 | 758 | subfile = XNEW (struct subfile); |
43f3e411 DE |
759 | memset (subfile, 0, sizeof (struct subfile)); |
760 | subfile->buildsym_compunit = buildsym_compunit; | |
761 | ||
762 | subfile->next = buildsym_compunit->subfiles; | |
763 | buildsym_compunit->subfiles = subfile; | |
764 | ||
c906108c SS |
765 | current_subfile = subfile; |
766 | ||
b74db436 | 767 | subfile->name = xstrdup (name); |
c906108c SS |
768 | |
769 | /* Initialize line-number recording for this subfile. */ | |
770 | subfile->line_vector = NULL; | |
771 | ||
772 | /* Default the source language to whatever can be deduced from the | |
773 | filename. If nothing can be deduced (such as for a C/C++ include | |
774 | file with a ".h" extension), then inherit whatever language the | |
775 | previous subfile had. This kludgery is necessary because there | |
776 | is no standard way in some object formats to record the source | |
777 | language. Also, when symtabs are allocated we try to deduce a | |
778 | language then as well, but it is too late for us to use that | |
779 | information while reading symbols, since symtabs aren't allocated | |
780 | until after all the symbols have been processed for a given | |
4a64f543 | 781 | source file. */ |
c906108c SS |
782 | |
783 | subfile->language = deduce_language_from_filename (subfile->name); | |
5aafa1cc PM |
784 | if (subfile->language == language_unknown |
785 | && subfile->next != NULL) | |
c906108c SS |
786 | { |
787 | subfile->language = subfile->next->language; | |
788 | } | |
789 | ||
25caa7a8 | 790 | /* If the filename of this subfile ends in .C, then change the |
c906108c | 791 | language of any pending subfiles from C to C++. We also accept |
25caa7a8 | 792 | any other C++ suffixes accepted by deduce_language_from_filename. */ |
c906108c SS |
793 | /* Likewise for f2c. */ |
794 | ||
795 | if (subfile->name) | |
796 | { | |
797 | struct subfile *s; | |
798 | enum language sublang = deduce_language_from_filename (subfile->name); | |
799 | ||
800 | if (sublang == language_cplus || sublang == language_fortran) | |
43f3e411 | 801 | for (s = buildsym_compunit->subfiles; s != NULL; s = s->next) |
c906108c SS |
802 | if (s->language == language_c) |
803 | s->language = sublang; | |
804 | } | |
805 | ||
806 | /* And patch up this file if necessary. */ | |
807 | if (subfile->language == language_c | |
808 | && subfile->next != NULL | |
809 | && (subfile->next->language == language_cplus | |
810 | || subfile->next->language == language_fortran)) | |
811 | { | |
812 | subfile->language = subfile->next->language; | |
813 | } | |
814 | } | |
815 | ||
43f3e411 | 816 | /* Delete the buildsym compunit. */ |
7bab9b58 DE |
817 | |
818 | static void | |
43f3e411 | 819 | free_buildsym_compunit (void) |
7bab9b58 | 820 | { |
43f3e411 DE |
821 | if (buildsym_compunit == NULL) |
822 | return; | |
b248663f | 823 | delete buildsym_compunit; |
43f3e411 | 824 | buildsym_compunit = NULL; |
0ab9ce85 | 825 | current_subfile = NULL; |
7bab9b58 DE |
826 | } |
827 | ||
c906108c SS |
828 | /* For stabs readers, the first N_SO symbol is assumed to be the |
829 | source file name, and the subfile struct is initialized using that | |
830 | assumption. If another N_SO symbol is later seen, immediately | |
831 | following the first one, then the first one is assumed to be the | |
832 | directory name and the second one is really the source file name. | |
833 | ||
834 | So we have to patch up the subfile struct by moving the old name | |
835 | value to dirname and remembering the new name. Some sanity | |
836 | checking is performed to ensure that the state of the subfile | |
837 | struct is reasonable and that the old name we are assuming to be a | |
4a64f543 | 838 | directory name actually is (by checking for a trailing '/'). */ |
c906108c SS |
839 | |
840 | void | |
a121b7c1 | 841 | patch_subfile_names (struct subfile *subfile, const char *name) |
c906108c | 842 | { |
43f3e411 DE |
843 | if (subfile != NULL |
844 | && buildsym_compunit->comp_dir == NULL | |
845 | && subfile->name != NULL | |
0ba1096a | 846 | && IS_DIR_SEPARATOR (subfile->name[strlen (subfile->name) - 1])) |
c906108c | 847 | { |
905eb0e2 | 848 | buildsym_compunit->comp_dir.reset (subfile->name); |
1b36a34b | 849 | subfile->name = xstrdup (name); |
46212e0b | 850 | set_last_source_file (name); |
c906108c SS |
851 | |
852 | /* Default the source language to whatever can be deduced from | |
853 | the filename. If nothing can be deduced (such as for a C/C++ | |
854 | include file with a ".h" extension), then inherit whatever | |
855 | language the previous subfile had. This kludgery is | |
856 | necessary because there is no standard way in some object | |
857 | formats to record the source language. Also, when symtabs | |
858 | are allocated we try to deduce a language then as well, but | |
859 | it is too late for us to use that information while reading | |
860 | symbols, since symtabs aren't allocated until after all the | |
4a64f543 | 861 | symbols have been processed for a given source file. */ |
c906108c SS |
862 | |
863 | subfile->language = deduce_language_from_filename (subfile->name); | |
5aafa1cc PM |
864 | if (subfile->language == language_unknown |
865 | && subfile->next != NULL) | |
c906108c SS |
866 | { |
867 | subfile->language = subfile->next->language; | |
868 | } | |
869 | } | |
870 | } | |
871 | \f | |
872 | /* Handle the N_BINCL and N_EINCL symbol types that act like N_SOL for | |
873 | switching source files (different subfiles, as we call them) within | |
874 | one object file, but using a stack rather than in an arbitrary | |
875 | order. */ | |
876 | ||
877 | void | |
878 | push_subfile (void) | |
879 | { | |
8d749320 | 880 | struct subfile_stack *tem = XNEW (struct subfile_stack); |
c906108c SS |
881 | |
882 | tem->next = subfile_stack; | |
883 | subfile_stack = tem; | |
884 | if (current_subfile == NULL || current_subfile->name == NULL) | |
885 | { | |
4a64f543 MS |
886 | internal_error (__FILE__, __LINE__, |
887 | _("failed internal consistency check")); | |
c906108c SS |
888 | } |
889 | tem->name = current_subfile->name; | |
890 | } | |
891 | ||
892 | char * | |
893 | pop_subfile (void) | |
894 | { | |
52f0bd74 AC |
895 | char *name; |
896 | struct subfile_stack *link = subfile_stack; | |
c906108c SS |
897 | |
898 | if (link == NULL) | |
899 | { | |
3e43a32a MS |
900 | internal_error (__FILE__, __LINE__, |
901 | _("failed internal consistency check")); | |
c906108c SS |
902 | } |
903 | name = link->name; | |
904 | subfile_stack = link->next; | |
b8c9b27d | 905 | xfree ((void *) link); |
c906108c SS |
906 | return (name); |
907 | } | |
908 | \f | |
909 | /* Add a linetable entry for line number LINE and address PC to the | |
910 | line vector for SUBFILE. */ | |
911 | ||
912 | void | |
aa1ee363 | 913 | record_line (struct subfile *subfile, int line, CORE_ADDR pc) |
c906108c SS |
914 | { |
915 | struct linetable_entry *e; | |
c906108c | 916 | |
cc59ec59 | 917 | /* Ignore the dummy line number in libg.o */ |
c906108c SS |
918 | if (line == 0xffff) |
919 | { | |
920 | return; | |
921 | } | |
922 | ||
923 | /* Make sure line vector exists and is big enough. */ | |
924 | if (!subfile->line_vector) | |
925 | { | |
926 | subfile->line_vector_length = INITIAL_LINE_VECTOR_LENGTH; | |
927 | subfile->line_vector = (struct linetable *) | |
928 | xmalloc (sizeof (struct linetable) | |
c5aa993b | 929 | + subfile->line_vector_length * sizeof (struct linetable_entry)); |
c906108c | 930 | subfile->line_vector->nitems = 0; |
530fedbc | 931 | buildsym_compunit->m_have_line_numbers = true; |
c906108c SS |
932 | } |
933 | ||
934 | if (subfile->line_vector->nitems + 1 >= subfile->line_vector_length) | |
935 | { | |
936 | subfile->line_vector_length *= 2; | |
937 | subfile->line_vector = (struct linetable *) | |
938 | xrealloc ((char *) subfile->line_vector, | |
939 | (sizeof (struct linetable) | |
940 | + (subfile->line_vector_length | |
941 | * sizeof (struct linetable_entry)))); | |
942 | } | |
943 | ||
607ae575 DJ |
944 | /* Normally, we treat lines as unsorted. But the end of sequence |
945 | marker is special. We sort line markers at the same PC by line | |
946 | number, so end of sequence markers (which have line == 0) appear | |
947 | first. This is right if the marker ends the previous function, | |
948 | and there is no padding before the next function. But it is | |
949 | wrong if the previous line was empty and we are now marking a | |
950 | switch to a different subfile. We must leave the end of sequence | |
951 | marker at the end of this group of lines, not sort the empty line | |
952 | to after the marker. The easiest way to accomplish this is to | |
953 | delete any empty lines from our table, if they are followed by | |
954 | end of sequence markers. All we lose is the ability to set | |
955 | breakpoints at some lines which contain no instructions | |
956 | anyway. */ | |
957 | if (line == 0 && subfile->line_vector->nitems > 0) | |
958 | { | |
959 | e = subfile->line_vector->item + subfile->line_vector->nitems - 1; | |
960 | while (subfile->line_vector->nitems > 0 && e->pc == pc) | |
961 | { | |
962 | e--; | |
963 | subfile->line_vector->nitems--; | |
964 | } | |
965 | } | |
966 | ||
c906108c SS |
967 | e = subfile->line_vector->item + subfile->line_vector->nitems++; |
968 | e->line = line; | |
607ae575 | 969 | e->pc = pc; |
c906108c SS |
970 | } |
971 | ||
972 | /* Needed in order to sort line tables from IBM xcoff files. Sigh! */ | |
973 | ||
974 | static int | |
975 | compare_line_numbers (const void *ln1p, const void *ln2p) | |
976 | { | |
977 | struct linetable_entry *ln1 = (struct linetable_entry *) ln1p; | |
978 | struct linetable_entry *ln2 = (struct linetable_entry *) ln2p; | |
979 | ||
980 | /* Note: this code does not assume that CORE_ADDRs can fit in ints. | |
981 | Please keep it that way. */ | |
982 | if (ln1->pc < ln2->pc) | |
983 | return -1; | |
984 | ||
985 | if (ln1->pc > ln2->pc) | |
986 | return 1; | |
987 | ||
988 | /* If pc equal, sort by line. I'm not sure whether this is optimum | |
989 | behavior (see comment at struct linetable in symtab.h). */ | |
990 | return ln1->line - ln2->line; | |
991 | } | |
992 | \f | |
43f3e411 DE |
993 | /* See buildsym.h. */ |
994 | ||
995 | struct compunit_symtab * | |
996 | buildsym_compunit_symtab (void) | |
997 | { | |
998 | gdb_assert (buildsym_compunit != NULL); | |
999 | ||
1000 | return buildsym_compunit->compunit_symtab; | |
1001 | } | |
1002 | ||
1003 | /* See buildsym.h. */ | |
fc474241 DE |
1004 | |
1005 | struct macro_table * | |
43f3e411 | 1006 | get_macro_table (void) |
fc474241 | 1007 | { |
43f3e411 DE |
1008 | struct objfile *objfile; |
1009 | ||
1010 | gdb_assert (buildsym_compunit != NULL); | |
6a976300 | 1011 | return buildsym_compunit->get_macro_table (); |
fc474241 DE |
1012 | } |
1013 | \f | |
0ab9ce85 DE |
1014 | /* Init state to prepare for building a symtab. |
1015 | Note: This can't be done in buildsym_init because dbxread.c and xcoffread.c | |
1016 | can call start_symtab+end_symtab multiple times after one call to | |
1017 | buildsym_init. */ | |
1018 | ||
1019 | static void | |
c0015d44 | 1020 | prepare_for_building (CORE_ADDR start_addr) |
0ab9ce85 | 1021 | { |
0ab9ce85 DE |
1022 | last_source_start_addr = start_addr; |
1023 | ||
1024 | local_symbols = NULL; | |
22cee43f | 1025 | local_using_directives = NULL; |
0ab9ce85 | 1026 | within_function = 0; |
0ab9ce85 DE |
1027 | |
1028 | context_stack_depth = 0; | |
1029 | ||
1030 | /* These should have been reset either by successful completion of building | |
33c7c59d | 1031 | a symtab, or by the scoped_free_pendings destructor. */ |
0ab9ce85 DE |
1032 | gdb_assert (file_symbols == NULL); |
1033 | gdb_assert (global_symbols == NULL); | |
22cee43f | 1034 | gdb_assert (global_using_directives == NULL); |
0ab9ce85 DE |
1035 | gdb_assert (pending_addrmap == NULL); |
1036 | gdb_assert (current_subfile == NULL); | |
e62cca7c | 1037 | gdb_assert (buildsym_compunit == nullptr); |
0ab9ce85 DE |
1038 | } |
1039 | ||
4d663531 | 1040 | /* Start a new symtab for a new source file in OBJFILE. Called, for example, |
c906108c SS |
1041 | when a stabs symbol of type N_SO is seen, or when a DWARF |
1042 | TAG_compile_unit DIE is seen. It indicates the start of data for | |
0b0287a1 DE |
1043 | one original source file. |
1044 | ||
5ffa0793 PA |
1045 | NAME is the name of the file (cannot be NULL). COMP_DIR is the |
1046 | directory in which the file was compiled (or NULL if not known). | |
1047 | START_ADDR is the lowest address of objects in the file (or 0 if | |
1048 | not known). LANGUAGE is the language of the source file, or | |
1049 | language_unknown if not known, in which case it'll be deduced from | |
1050 | the filename. */ | |
c906108c | 1051 | |
43f3e411 | 1052 | struct compunit_symtab * |
4d663531 | 1053 | start_symtab (struct objfile *objfile, const char *name, const char *comp_dir, |
5ffa0793 | 1054 | CORE_ADDR start_addr, enum language language) |
c906108c | 1055 | { |
c0015d44 | 1056 | prepare_for_building (start_addr); |
43f3e411 | 1057 | |
c0015d44 | 1058 | buildsym_compunit = new struct buildsym_compunit (objfile, name, comp_dir, |
b248663f | 1059 | language); |
43f3e411 | 1060 | |
0ab9ce85 | 1061 | /* Allocate the compunit symtab now. The caller needs it to allocate |
43f3e411 DE |
1062 | non-primary symtabs. It is also needed by get_macro_table. */ |
1063 | buildsym_compunit->compunit_symtab = allocate_compunit_symtab (objfile, | |
1064 | name); | |
1065 | ||
1066 | /* Build the subfile for NAME (the main source file) so that we can record | |
1067 | a pointer to it for later. | |
1068 | IMPORTANT: Do not allocate a struct symtab for NAME here. | |
1069 | It can happen that the debug info provides a different path to NAME than | |
1070 | DIRNAME,NAME. We cope with this in watch_main_source_file_lossage but | |
1071 | that only works if the main_subfile doesn't have a symtab yet. */ | |
4d663531 | 1072 | start_subfile (name); |
7bab9b58 DE |
1073 | /* Save this so that we don't have to go looking for it at the end |
1074 | of the subfiles list. */ | |
43f3e411 DE |
1075 | buildsym_compunit->main_subfile = current_subfile; |
1076 | ||
43f3e411 | 1077 | return buildsym_compunit->compunit_symtab; |
6d30eef8 DE |
1078 | } |
1079 | ||
1080 | /* Restart compilation for a symtab. | |
0ab9ce85 DE |
1081 | CUST is the result of end_expandable_symtab. |
1082 | NAME, START_ADDR are the source file we are resuming with. | |
1083 | ||
6d30eef8 | 1084 | This is used when a symtab is built from multiple sources. |
0ab9ce85 DE |
1085 | The symtab is first built with start_symtab/end_expandable_symtab |
1086 | and then for each additional piece call restart_symtab/augment_*_symtab. | |
1087 | Note: At the moment there is only augment_type_symtab. */ | |
6d30eef8 DE |
1088 | |
1089 | void | |
0ab9ce85 DE |
1090 | restart_symtab (struct compunit_symtab *cust, |
1091 | const char *name, CORE_ADDR start_addr) | |
6d30eef8 | 1092 | { |
c0015d44 | 1093 | prepare_for_building (start_addr); |
c906108c | 1094 | |
b248663f TT |
1095 | buildsym_compunit |
1096 | = new struct buildsym_compunit (COMPUNIT_OBJFILE (cust), | |
c0015d44 | 1097 | name, |
b248663f TT |
1098 | COMPUNIT_DIRNAME (cust), |
1099 | compunit_language (cust)); | |
0ab9ce85 | 1100 | buildsym_compunit->compunit_symtab = cust; |
c906108c SS |
1101 | } |
1102 | ||
4a64f543 MS |
1103 | /* Subroutine of end_symtab to simplify it. Look for a subfile that |
1104 | matches the main source file's basename. If there is only one, and | |
1105 | if the main source file doesn't have any symbol or line number | |
1106 | information, then copy this file's symtab and line_vector to the | |
1107 | main source file's subfile and discard the other subfile. This can | |
1108 | happen because of a compiler bug or from the user playing games | |
1109 | with #line or from things like a distributed build system that | |
43f3e411 DE |
1110 | manipulates the debug info. This can also happen from an innocent |
1111 | symlink in the paths, we don't canonicalize paths here. */ | |
4584e32e DE |
1112 | |
1113 | static void | |
1114 | watch_main_source_file_lossage (void) | |
1115 | { | |
43f3e411 | 1116 | struct subfile *mainsub, *subfile; |
4584e32e | 1117 | |
43f3e411 | 1118 | /* We have to watch for buildsym_compunit == NULL here. It's a quirk of |
7bab9b58 | 1119 | end_symtab, it can return NULL so there may not be a main subfile. */ |
43f3e411 | 1120 | if (buildsym_compunit == NULL) |
7bab9b58 | 1121 | return; |
4584e32e | 1122 | |
43f3e411 DE |
1123 | /* Get the main source file. */ |
1124 | mainsub = buildsym_compunit->main_subfile; | |
1125 | ||
4a64f543 | 1126 | /* If the main source file doesn't have any line number or symbol |
7bab9b58 | 1127 | info, look for an alias in another subfile. */ |
4584e32e | 1128 | |
43f3e411 DE |
1129 | if (mainsub->line_vector == NULL |
1130 | && mainsub->symtab == NULL) | |
4584e32e | 1131 | { |
43f3e411 | 1132 | const char *mainbase = lbasename (mainsub->name); |
4584e32e DE |
1133 | int nr_matches = 0; |
1134 | struct subfile *prevsub; | |
1135 | struct subfile *mainsub_alias = NULL; | |
1136 | struct subfile *prev_mainsub_alias = NULL; | |
1137 | ||
1138 | prevsub = NULL; | |
43f3e411 DE |
1139 | for (subfile = buildsym_compunit->subfiles; |
1140 | subfile != NULL; | |
4584e32e DE |
1141 | subfile = subfile->next) |
1142 | { | |
43f3e411 DE |
1143 | if (subfile == mainsub) |
1144 | continue; | |
0ba1096a | 1145 | if (filename_cmp (lbasename (subfile->name), mainbase) == 0) |
4584e32e DE |
1146 | { |
1147 | ++nr_matches; | |
1148 | mainsub_alias = subfile; | |
1149 | prev_mainsub_alias = prevsub; | |
1150 | } | |
1151 | prevsub = subfile; | |
1152 | } | |
1153 | ||
1154 | if (nr_matches == 1) | |
1155 | { | |
43f3e411 | 1156 | gdb_assert (mainsub_alias != NULL && mainsub_alias != mainsub); |
4584e32e DE |
1157 | |
1158 | /* Found a match for the main source file. | |
1159 | Copy its line_vector and symtab to the main subfile | |
1160 | and then discard it. */ | |
1161 | ||
43f3e411 DE |
1162 | mainsub->line_vector = mainsub_alias->line_vector; |
1163 | mainsub->line_vector_length = mainsub_alias->line_vector_length; | |
1164 | mainsub->symtab = mainsub_alias->symtab; | |
4584e32e DE |
1165 | |
1166 | if (prev_mainsub_alias == NULL) | |
43f3e411 | 1167 | buildsym_compunit->subfiles = mainsub_alias->next; |
4584e32e DE |
1168 | else |
1169 | prev_mainsub_alias->next = mainsub_alias->next; | |
98387a29 | 1170 | xfree (mainsub_alias->name); |
4584e32e DE |
1171 | xfree (mainsub_alias); |
1172 | } | |
1173 | } | |
1174 | } | |
1175 | ||
0ab9ce85 DE |
1176 | /* Reset state after a successful building of a symtab. |
1177 | This exists because dbxread.c and xcoffread.c can call | |
1178 | start_symtab+end_symtab multiple times after one call to buildsym_init, | |
33c7c59d | 1179 | and before the scoped_free_pendings destructor is called. |
0ab9ce85 | 1180 | We keep the free_pendings list around for dbx/xcoff sake. */ |
6d30eef8 DE |
1181 | |
1182 | static void | |
1183 | reset_symtab_globals (void) | |
1184 | { | |
0ab9ce85 | 1185 | local_symbols = NULL; |
22cee43f | 1186 | local_using_directives = NULL; |
0ab9ce85 DE |
1187 | file_symbols = NULL; |
1188 | global_symbols = NULL; | |
22cee43f | 1189 | global_using_directives = NULL; |
0ab9ce85 | 1190 | |
6d30eef8 | 1191 | if (pending_addrmap) |
0ab9ce85 DE |
1192 | obstack_free (&pending_addrmap_obstack, NULL); |
1193 | pending_addrmap = NULL; | |
1194 | ||
1195 | free_buildsym_compunit (); | |
6d30eef8 DE |
1196 | } |
1197 | ||
4359dff1 JK |
1198 | /* Implementation of the first part of end_symtab. It allows modifying |
1199 | STATIC_BLOCK before it gets finalized by end_symtab_from_static_block. | |
1200 | If the returned value is NULL there is no blockvector created for | |
1201 | this symtab (you still must call end_symtab_from_static_block). | |
c906108c | 1202 | |
4359dff1 JK |
1203 | END_ADDR is the same as for end_symtab: the address of the end of the |
1204 | file's text. | |
c906108c | 1205 | |
4359dff1 | 1206 | If EXPANDABLE is non-zero the STATIC_BLOCK dictionary is made |
36586728 TT |
1207 | expandable. |
1208 | ||
1209 | If REQUIRED is non-zero, then a symtab is created even if it does | |
1210 | not contain any symbols. */ | |
6d30eef8 | 1211 | |
4359dff1 | 1212 | struct block * |
4d663531 | 1213 | end_symtab_get_static_block (CORE_ADDR end_addr, int expandable, int required) |
c906108c | 1214 | { |
43f3e411 | 1215 | struct objfile *objfile = buildsym_compunit->objfile; |
4d663531 | 1216 | |
c906108c SS |
1217 | /* Finish the lexical context of the last function in the file; pop |
1218 | the context stack. */ | |
1219 | ||
1220 | if (context_stack_depth > 0) | |
1221 | { | |
4359dff1 JK |
1222 | struct context_stack *cstk = pop_context (); |
1223 | ||
c906108c | 1224 | /* Make a block for the local symbols within. */ |
63e43d3a | 1225 | finish_block (cstk->name, &local_symbols, cstk->old_blocks, NULL, |
4d663531 | 1226 | cstk->start_addr, end_addr); |
c906108c SS |
1227 | |
1228 | if (context_stack_depth > 0) | |
1229 | { | |
1230 | /* This is said to happen with SCO. The old coffread.c | |
1231 | code simply emptied the context stack, so we do the | |
1232 | same. FIXME: Find out why it is happening. This is not | |
1233 | believed to happen in most cases (even for coffread.c); | |
1234 | it used to be an abort(). */ | |
b98664d3 | 1235 | complaint (_("Context stack not empty in end_symtab")); |
c906108c SS |
1236 | context_stack_depth = 0; |
1237 | } | |
1238 | } | |
1239 | ||
1240 | /* Reordered executables may have out of order pending blocks; if | |
1241 | OBJF_REORDERED is true, then sort the pending blocks. */ | |
6d30eef8 | 1242 | |
c906108c SS |
1243 | if ((objfile->flags & OBJF_REORDERED) && pending_blocks) |
1244 | { | |
07e7f39f | 1245 | struct pending_block *pb; |
c906108c | 1246 | |
b05628f0 | 1247 | std::vector<block *> barray; |
c906108c | 1248 | |
07e7f39f | 1249 | for (pb = pending_blocks; pb != NULL; pb = pb->next) |
b05628f0 | 1250 | barray.push_back (pb->block); |
07e7f39f | 1251 | |
5033013f UW |
1252 | /* Sort blocks by start address in descending order. Blocks with the |
1253 | same start address must remain in the original order to preserve | |
1254 | inline function caller/callee relationships. */ | |
1255 | std::stable_sort (barray.begin (), barray.end (), | |
1256 | [] (const block *a, const block *b) | |
1257 | { | |
1258 | return BLOCK_START (a) > BLOCK_START (b); | |
1259 | }); | |
07e7f39f | 1260 | |
b05628f0 | 1261 | int i = 0; |
07e7f39f | 1262 | for (pb = pending_blocks; pb != NULL; pb = pb->next) |
b05628f0 | 1263 | pb->block = barray[i++]; |
c906108c SS |
1264 | } |
1265 | ||
1266 | /* Cleanup any undefined types that have been left hanging around | |
1267 | (this needs to be done before the finish_blocks so that | |
1268 | file_symbols is still good). | |
c5aa993b | 1269 | |
0a0edcd5 | 1270 | Both cleanup_undefined_stabs_types and finish_global_stabs are stabs |
c906108c SS |
1271 | specific, but harmless for other symbol readers, since on gdb |
1272 | startup or when finished reading stabs, the state is set so these | |
1273 | are no-ops. FIXME: Is this handled right in case of QUIT? Can | |
1274 | we make this cleaner? */ | |
1275 | ||
0a0edcd5 | 1276 | cleanup_undefined_stabs_types (objfile); |
c906108c SS |
1277 | finish_global_stabs (objfile); |
1278 | ||
36586728 TT |
1279 | if (!required |
1280 | && pending_blocks == NULL | |
c906108c SS |
1281 | && file_symbols == NULL |
1282 | && global_symbols == NULL | |
530fedbc | 1283 | && !buildsym_compunit->m_have_line_numbers |
6a976300 | 1284 | && buildsym_compunit->m_pending_macros == NULL |
22cee43f | 1285 | && global_using_directives == NULL) |
c906108c | 1286 | { |
4359dff1 JK |
1287 | /* Ignore symtabs that have no functions with real debugging info. */ |
1288 | return NULL; | |
1289 | } | |
1290 | else | |
1291 | { | |
1292 | /* Define the STATIC_BLOCK. */ | |
63e43d3a | 1293 | return finish_block_internal (NULL, &file_symbols, NULL, NULL, |
4d663531 | 1294 | last_source_start_addr, end_addr, |
4359dff1 JK |
1295 | 0, expandable); |
1296 | } | |
1297 | } | |
1298 | ||
7bab9b58 DE |
1299 | /* Subroutine of end_symtab_from_static_block to simplify it. |
1300 | Handle the "have blockvector" case. | |
1301 | See end_symtab_from_static_block for a description of the arguments. */ | |
1302 | ||
43f3e411 | 1303 | static struct compunit_symtab * |
7bab9b58 | 1304 | end_symtab_with_blockvector (struct block *static_block, |
4d663531 | 1305 | int section, int expandable) |
4359dff1 | 1306 | { |
43f3e411 DE |
1307 | struct objfile *objfile = buildsym_compunit->objfile; |
1308 | struct compunit_symtab *cu = buildsym_compunit->compunit_symtab; | |
7bab9b58 | 1309 | struct symtab *symtab; |
4359dff1 JK |
1310 | struct blockvector *blockvector; |
1311 | struct subfile *subfile; | |
7bab9b58 | 1312 | CORE_ADDR end_addr; |
4359dff1 | 1313 | |
7bab9b58 | 1314 | gdb_assert (static_block != NULL); |
43f3e411 DE |
1315 | gdb_assert (buildsym_compunit != NULL); |
1316 | gdb_assert (buildsym_compunit->subfiles != NULL); | |
7bab9b58 DE |
1317 | |
1318 | end_addr = BLOCK_END (static_block); | |
1319 | ||
1320 | /* Create the GLOBAL_BLOCK and build the blockvector. */ | |
63e43d3a | 1321 | finish_block_internal (NULL, &global_symbols, NULL, NULL, |
4d663531 | 1322 | last_source_start_addr, end_addr, |
7bab9b58 | 1323 | 1, expandable); |
43f3e411 | 1324 | blockvector = make_blockvector (); |
c906108c | 1325 | |
f56ce883 DE |
1326 | /* Read the line table if it has to be read separately. |
1327 | This is only used by xcoffread.c. */ | |
c295b2e5 | 1328 | if (objfile->sf->sym_read_linetable != NULL) |
f56ce883 | 1329 | objfile->sf->sym_read_linetable (objfile); |
c906108c | 1330 | |
4584e32e DE |
1331 | /* Handle the case where the debug info specifies a different path |
1332 | for the main source file. It can cause us to lose track of its | |
1333 | line number information. */ | |
1334 | watch_main_source_file_lossage (); | |
1335 | ||
43f3e411 DE |
1336 | /* Now create the symtab objects proper, if not already done, |
1337 | one for each subfile. */ | |
c906108c | 1338 | |
43f3e411 DE |
1339 | for (subfile = buildsym_compunit->subfiles; |
1340 | subfile != NULL; | |
1341 | subfile = subfile->next) | |
c906108c SS |
1342 | { |
1343 | int linetablesize = 0; | |
c906108c | 1344 | |
7bab9b58 | 1345 | if (subfile->line_vector) |
c906108c | 1346 | { |
7bab9b58 DE |
1347 | linetablesize = sizeof (struct linetable) + |
1348 | subfile->line_vector->nitems * sizeof (struct linetable_entry); | |
1349 | ||
1350 | /* Like the pending blocks, the line table may be | |
1351 | scrambled in reordered executables. Sort it if | |
1352 | OBJF_REORDERED is true. */ | |
1353 | if (objfile->flags & OBJF_REORDERED) | |
1354 | qsort (subfile->line_vector->item, | |
1355 | subfile->line_vector->nitems, | |
1356 | sizeof (struct linetable_entry), compare_line_numbers); | |
1357 | } | |
9182c5bc | 1358 | |
7bab9b58 DE |
1359 | /* Allocate a symbol table if necessary. */ |
1360 | if (subfile->symtab == NULL) | |
43f3e411 | 1361 | subfile->symtab = allocate_symtab (cu, subfile->name); |
7bab9b58 | 1362 | symtab = subfile->symtab; |
9182c5bc | 1363 | |
7bab9b58 | 1364 | /* Fill in its components. */ |
43f3e411 | 1365 | |
7bab9b58 DE |
1366 | if (subfile->line_vector) |
1367 | { | |
1368 | /* Reallocate the line table on the symbol obstack. */ | |
8435453b | 1369 | SYMTAB_LINETABLE (symtab) = (struct linetable *) |
7bab9b58 | 1370 | obstack_alloc (&objfile->objfile_obstack, linetablesize); |
8435453b DE |
1371 | memcpy (SYMTAB_LINETABLE (symtab), subfile->line_vector, |
1372 | linetablesize); | |
c906108c | 1373 | } |
24be086d | 1374 | else |
c906108c | 1375 | { |
8435453b | 1376 | SYMTAB_LINETABLE (symtab) = NULL; |
c906108c | 1377 | } |
c906108c | 1378 | |
7bab9b58 DE |
1379 | /* Use whatever language we have been using for this |
1380 | subfile, not the one that was deduced in allocate_symtab | |
1381 | from the filename. We already did our own deducing when | |
1382 | we created the subfile, and we may have altered our | |
1383 | opinion of what language it is from things we found in | |
1384 | the symbols. */ | |
1385 | symtab->language = subfile->language; | |
43f3e411 | 1386 | } |
c906108c | 1387 | |
43f3e411 DE |
1388 | /* Make sure the symtab of main_subfile is the first in its list. */ |
1389 | { | |
1390 | struct symtab *main_symtab, *prev_symtab; | |
1391 | ||
1392 | main_symtab = buildsym_compunit->main_subfile->symtab; | |
1393 | prev_symtab = NULL; | |
1394 | ALL_COMPUNIT_FILETABS (cu, symtab) | |
1395 | { | |
1396 | if (symtab == main_symtab) | |
1397 | { | |
1398 | if (prev_symtab != NULL) | |
1399 | { | |
1400 | prev_symtab->next = main_symtab->next; | |
1401 | main_symtab->next = COMPUNIT_FILETABS (cu); | |
1402 | COMPUNIT_FILETABS (cu) = main_symtab; | |
1403 | } | |
1404 | break; | |
1405 | } | |
1406 | prev_symtab = symtab; | |
1407 | } | |
1408 | gdb_assert (main_symtab == COMPUNIT_FILETABS (cu)); | |
1409 | } | |
84a146c9 | 1410 | |
0ab9ce85 | 1411 | /* Fill out the compunit symtab. */ |
84a146c9 | 1412 | |
43f3e411 DE |
1413 | if (buildsym_compunit->comp_dir != NULL) |
1414 | { | |
1415 | /* Reallocate the dirname on the symbol obstack. */ | |
905eb0e2 | 1416 | const char *comp_dir = buildsym_compunit->comp_dir.get (); |
43f3e411 | 1417 | COMPUNIT_DIRNAME (cu) |
224c3ddb | 1418 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, |
905eb0e2 | 1419 | comp_dir, strlen (comp_dir)); |
c906108c SS |
1420 | } |
1421 | ||
43f3e411 DE |
1422 | /* Save the debug format string (if any) in the symtab. */ |
1423 | COMPUNIT_DEBUGFORMAT (cu) = buildsym_compunit->debugformat; | |
1424 | ||
1425 | /* Similarly for the producer. */ | |
1426 | COMPUNIT_PRODUCER (cu) = buildsym_compunit->producer; | |
1427 | ||
1428 | COMPUNIT_BLOCKVECTOR (cu) = blockvector; | |
7bab9b58 | 1429 | { |
43f3e411 | 1430 | struct block *b = BLOCKVECTOR_BLOCK (blockvector, GLOBAL_BLOCK); |
cb1df416 | 1431 | |
43f3e411 | 1432 | set_block_compunit_symtab (b, cu); |
7bab9b58 | 1433 | } |
cb1df416 | 1434 | |
43f3e411 DE |
1435 | COMPUNIT_BLOCK_LINE_SECTION (cu) = section; |
1436 | ||
6a976300 | 1437 | COMPUNIT_MACRO_TABLE (cu) = buildsym_compunit->release_macros (); |
43f3e411 | 1438 | |
7bab9b58 DE |
1439 | /* Default any symbols without a specified symtab to the primary symtab. */ |
1440 | { | |
1441 | int block_i; | |
1442 | ||
43f3e411 DE |
1443 | /* The main source file's symtab. */ |
1444 | symtab = COMPUNIT_FILETABS (cu); | |
1445 | ||
7bab9b58 DE |
1446 | for (block_i = 0; block_i < BLOCKVECTOR_NBLOCKS (blockvector); block_i++) |
1447 | { | |
1448 | struct block *block = BLOCKVECTOR_BLOCK (blockvector, block_i); | |
1449 | struct symbol *sym; | |
1450 | struct dict_iterator iter; | |
1451 | ||
1452 | /* Inlined functions may have symbols not in the global or | |
1453 | static symbol lists. */ | |
1454 | if (BLOCK_FUNCTION (block) != NULL) | |
08be3fe3 DE |
1455 | if (symbol_symtab (BLOCK_FUNCTION (block)) == NULL) |
1456 | symbol_set_symtab (BLOCK_FUNCTION (block), symtab); | |
7bab9b58 DE |
1457 | |
1458 | /* Note that we only want to fix up symbols from the local | |
1459 | blocks, not blocks coming from included symtabs. That is why | |
1460 | we use ALL_DICT_SYMBOLS here and not ALL_BLOCK_SYMBOLS. */ | |
1461 | ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym) | |
08be3fe3 DE |
1462 | if (symbol_symtab (sym) == NULL) |
1463 | symbol_set_symtab (sym, symtab); | |
7bab9b58 DE |
1464 | } |
1465 | } | |
edb3359d | 1466 | |
43f3e411 | 1467 | add_compunit_symtab_to_objfile (cu); |
43f3e411 DE |
1468 | |
1469 | return cu; | |
7bab9b58 DE |
1470 | } |
1471 | ||
1472 | /* Implementation of the second part of end_symtab. Pass STATIC_BLOCK | |
1473 | as value returned by end_symtab_get_static_block. | |
1474 | ||
1475 | SECTION is the same as for end_symtab: the section number | |
1476 | (in objfile->section_offsets) of the blockvector and linetable. | |
1477 | ||
1478 | If EXPANDABLE is non-zero the GLOBAL_BLOCK dictionary is made | |
1479 | expandable. */ | |
1480 | ||
43f3e411 | 1481 | struct compunit_symtab * |
7bab9b58 | 1482 | end_symtab_from_static_block (struct block *static_block, |
4d663531 | 1483 | int section, int expandable) |
7bab9b58 | 1484 | { |
43f3e411 | 1485 | struct compunit_symtab *cu; |
7bab9b58 DE |
1486 | |
1487 | if (static_block == NULL) | |
1488 | { | |
0ab9ce85 DE |
1489 | /* Handle the "no blockvector" case. |
1490 | When this happens there is nothing to record, so there's nothing | |
1491 | to do: memory will be freed up later. | |
1492 | ||
1493 | Note: We won't be adding a compunit to the objfile's list of | |
1494 | compunits, so there's nothing to unchain. However, since each symtab | |
1495 | is added to the objfile's obstack we can't free that space. | |
1496 | We could do better, but this is believed to be a sufficiently rare | |
1497 | event. */ | |
43f3e411 | 1498 | cu = NULL; |
7bab9b58 DE |
1499 | } |
1500 | else | |
43f3e411 | 1501 | cu = end_symtab_with_blockvector (static_block, section, expandable); |
cb1df416 | 1502 | |
6d30eef8 DE |
1503 | reset_symtab_globals (); |
1504 | ||
43f3e411 | 1505 | return cu; |
6d30eef8 DE |
1506 | } |
1507 | ||
4359dff1 JK |
1508 | /* Finish the symbol definitions for one main source file, close off |
1509 | all the lexical contexts for that file (creating struct block's for | |
1510 | them), then make the struct symtab for that file and put it in the | |
1511 | list of all such. | |
1512 | ||
1513 | END_ADDR is the address of the end of the file's text. SECTION is | |
1514 | the section number (in objfile->section_offsets) of the blockvector | |
1515 | and linetable. | |
1516 | ||
1517 | Note that it is possible for end_symtab() to return NULL. In | |
1518 | particular, for the DWARF case at least, it will return NULL when | |
1519 | it finds a compilation unit that has exactly one DIE, a | |
1520 | TAG_compile_unit DIE. This can happen when we link in an object | |
1521 | file that was compiled from an empty source file. Returning NULL | |
1522 | is probably not the correct thing to do, because then gdb will | |
1523 | never know about this empty file (FIXME). | |
1524 | ||
1525 | If you need to modify STATIC_BLOCK before it is finalized you should | |
1526 | call end_symtab_get_static_block and end_symtab_from_static_block | |
1527 | yourself. */ | |
6d30eef8 | 1528 | |
43f3e411 | 1529 | struct compunit_symtab * |
4d663531 | 1530 | end_symtab (CORE_ADDR end_addr, int section) |
6d30eef8 | 1531 | { |
4359dff1 JK |
1532 | struct block *static_block; |
1533 | ||
4d663531 DE |
1534 | static_block = end_symtab_get_static_block (end_addr, 0, 0); |
1535 | return end_symtab_from_static_block (static_block, section, 0); | |
6d30eef8 DE |
1536 | } |
1537 | ||
4359dff1 | 1538 | /* Same as end_symtab except create a symtab that can be later added to. */ |
6d30eef8 | 1539 | |
43f3e411 | 1540 | struct compunit_symtab * |
4d663531 | 1541 | end_expandable_symtab (CORE_ADDR end_addr, int section) |
6d30eef8 | 1542 | { |
4359dff1 JK |
1543 | struct block *static_block; |
1544 | ||
4d663531 DE |
1545 | static_block = end_symtab_get_static_block (end_addr, 1, 0); |
1546 | return end_symtab_from_static_block (static_block, section, 1); | |
6d30eef8 DE |
1547 | } |
1548 | ||
1549 | /* Subroutine of augment_type_symtab to simplify it. | |
43f3e411 DE |
1550 | Attach the main source file's symtab to all symbols in PENDING_LIST that |
1551 | don't have one. */ | |
6d30eef8 DE |
1552 | |
1553 | static void | |
43f3e411 DE |
1554 | set_missing_symtab (struct pending *pending_list, |
1555 | struct compunit_symtab *cu) | |
6d30eef8 DE |
1556 | { |
1557 | struct pending *pending; | |
1558 | int i; | |
1559 | ||
1560 | for (pending = pending_list; pending != NULL; pending = pending->next) | |
801e3a5b | 1561 | { |
6d30eef8 DE |
1562 | for (i = 0; i < pending->nsyms; ++i) |
1563 | { | |
08be3fe3 DE |
1564 | if (symbol_symtab (pending->symbol[i]) == NULL) |
1565 | symbol_set_symtab (pending->symbol[i], COMPUNIT_FILETABS (cu)); | |
6d30eef8 | 1566 | } |
801e3a5b | 1567 | } |
6d30eef8 | 1568 | } |
c906108c | 1569 | |
6d30eef8 DE |
1570 | /* Same as end_symtab, but for the case where we're adding more symbols |
1571 | to an existing symtab that is known to contain only type information. | |
1572 | This is the case for DWARF4 Type Units. */ | |
1573 | ||
1574 | void | |
0ab9ce85 | 1575 | augment_type_symtab (void) |
6d30eef8 | 1576 | { |
0ab9ce85 | 1577 | struct compunit_symtab *cust = buildsym_compunit->compunit_symtab; |
43f3e411 | 1578 | const struct blockvector *blockvector = COMPUNIT_BLOCKVECTOR (cust); |
6d30eef8 DE |
1579 | |
1580 | if (context_stack_depth > 0) | |
1581 | { | |
b98664d3 | 1582 | complaint (_("Context stack not empty in augment_type_symtab")); |
6d30eef8 DE |
1583 | context_stack_depth = 0; |
1584 | } | |
1585 | if (pending_blocks != NULL) | |
b98664d3 | 1586 | complaint (_("Blocks in a type symtab")); |
6a976300 | 1587 | if (buildsym_compunit->m_pending_macros != NULL) |
b98664d3 | 1588 | complaint (_("Macro in a type symtab")); |
530fedbc | 1589 | if (buildsym_compunit->m_have_line_numbers) |
b98664d3 | 1590 | complaint (_("Line numbers recorded in a type symtab")); |
6d30eef8 DE |
1591 | |
1592 | if (file_symbols != NULL) | |
1593 | { | |
1594 | struct block *block = BLOCKVECTOR_BLOCK (blockvector, STATIC_BLOCK); | |
1595 | ||
1596 | /* First mark any symbols without a specified symtab as belonging | |
1597 | to the primary symtab. */ | |
43f3e411 | 1598 | set_missing_symtab (file_symbols, cust); |
6d30eef8 DE |
1599 | |
1600 | dict_add_pending (BLOCK_DICT (block), file_symbols); | |
1601 | } | |
1602 | ||
1603 | if (global_symbols != NULL) | |
1604 | { | |
1605 | struct block *block = BLOCKVECTOR_BLOCK (blockvector, GLOBAL_BLOCK); | |
1606 | ||
1607 | /* First mark any symbols without a specified symtab as belonging | |
1608 | to the primary symtab. */ | |
43f3e411 | 1609 | set_missing_symtab (global_symbols, cust); |
6d30eef8 DE |
1610 | |
1611 | dict_add_pending (BLOCK_DICT (block), global_symbols); | |
1612 | } | |
1613 | ||
1614 | reset_symtab_globals (); | |
c906108c SS |
1615 | } |
1616 | ||
1617 | /* Push a context block. Args are an identifying nesting level | |
1618 | (checkable when you pop it), and the starting PC address of this | |
1619 | context. */ | |
1620 | ||
1621 | struct context_stack * | |
1622 | push_context (int desc, CORE_ADDR valu) | |
1623 | { | |
fe978cb0 | 1624 | struct context_stack *newobj; |
c906108c SS |
1625 | |
1626 | if (context_stack_depth == context_stack_size) | |
1627 | { | |
1628 | context_stack_size *= 2; | |
1629 | context_stack = (struct context_stack *) | |
1630 | xrealloc ((char *) context_stack, | |
c5aa993b | 1631 | (context_stack_size * sizeof (struct context_stack))); |
c906108c SS |
1632 | } |
1633 | ||
fe978cb0 PA |
1634 | newobj = &context_stack[context_stack_depth++]; |
1635 | newobj->depth = desc; | |
1636 | newobj->locals = local_symbols; | |
1637 | newobj->old_blocks = pending_blocks; | |
1638 | newobj->start_addr = valu; | |
22cee43f | 1639 | newobj->local_using_directives = local_using_directives; |
fe978cb0 | 1640 | newobj->name = NULL; |
c906108c SS |
1641 | |
1642 | local_symbols = NULL; | |
22cee43f | 1643 | local_using_directives = NULL; |
c906108c | 1644 | |
fe978cb0 | 1645 | return newobj; |
c906108c | 1646 | } |
0c5e171a | 1647 | |
a672ef13 | 1648 | /* Pop a context block. Returns the address of the context block just |
4a64f543 | 1649 | popped. */ |
a672ef13 | 1650 | |
0c5e171a KD |
1651 | struct context_stack * |
1652 | pop_context (void) | |
1653 | { | |
1654 | gdb_assert (context_stack_depth > 0); | |
1655 | return (&context_stack[--context_stack_depth]); | |
1656 | } | |
1657 | ||
c906108c | 1658 | \f |
357e46e7 | 1659 | |
4a64f543 | 1660 | /* Compute a small integer hash code for the given name. */ |
c906108c SS |
1661 | |
1662 | int | |
0d5cff50 | 1663 | hashname (const char *name) |
c906108c | 1664 | { |
357e46e7 | 1665 | return (hash(name,strlen(name)) % HASHSIZE); |
c906108c SS |
1666 | } |
1667 | \f | |
1668 | ||
1669 | void | |
554d387d | 1670 | record_debugformat (const char *format) |
c906108c | 1671 | { |
43f3e411 | 1672 | buildsym_compunit->debugformat = format; |
c906108c SS |
1673 | } |
1674 | ||
303b6f5d DJ |
1675 | void |
1676 | record_producer (const char *producer) | |
1677 | { | |
43f3e411 | 1678 | buildsym_compunit->producer = producer; |
303b6f5d DJ |
1679 | } |
1680 | ||
c906108c SS |
1681 | /* Merge the first symbol list SRCLIST into the second symbol list |
1682 | TARGETLIST by repeated calls to add_symbol_to_list(). This | |
1683 | procedure "frees" each link of SRCLIST by adding it to the | |
1684 | free_pendings list. Caller must set SRCLIST to a null list after | |
1685 | calling this function. | |
1686 | ||
4a64f543 | 1687 | Void return. */ |
c906108c SS |
1688 | |
1689 | void | |
1690 | merge_symbol_lists (struct pending **srclist, struct pending **targetlist) | |
1691 | { | |
52f0bd74 | 1692 | int i; |
c906108c SS |
1693 | |
1694 | if (!srclist || !*srclist) | |
1695 | return; | |
1696 | ||
1697 | /* Merge in elements from current link. */ | |
1698 | for (i = 0; i < (*srclist)->nsyms; i++) | |
1699 | add_symbol_to_list ((*srclist)->symbol[i], targetlist); | |
1700 | ||
1701 | /* Recurse on next. */ | |
1702 | merge_symbol_lists (&(*srclist)->next, targetlist); | |
1703 | ||
1704 | /* "Free" the current link. */ | |
1705 | (*srclist)->next = free_pendings; | |
1706 | free_pendings = (*srclist); | |
1707 | } | |
1708 | \f | |
46212e0b | 1709 | |
46212e0b TT |
1710 | /* See buildsym.h. */ |
1711 | ||
1712 | void | |
1713 | set_last_source_file (const char *name) | |
1714 | { | |
c0015d44 TT |
1715 | gdb_assert (buildsym_compunit != nullptr || name == nullptr); |
1716 | if (buildsym_compunit != nullptr) | |
1717 | buildsym_compunit->set_last_source_file (name); | |
46212e0b TT |
1718 | } |
1719 | ||
1720 | /* See buildsym.h. */ | |
1721 | ||
1722 | const char * | |
1723 | get_last_source_file (void) | |
1724 | { | |
c0015d44 TT |
1725 | if (buildsym_compunit == nullptr) |
1726 | return nullptr; | |
1727 | return buildsym_compunit->m_last_source_file.get (); | |
46212e0b TT |
1728 | } |
1729 | ||
1730 | \f | |
1731 | ||
c906108c SS |
1732 | /* Initialize anything that needs initializing when starting to read a |
1733 | fresh piece of a symbol file, e.g. reading in the stuff | |
1734 | corresponding to a psymtab. */ | |
1735 | ||
1736 | void | |
fba45db2 | 1737 | buildsym_init (void) |
c906108c | 1738 | { |
fc474241 | 1739 | subfile_stack = NULL; |
801e3a5b | 1740 | |
801e3a5b | 1741 | pending_addrmap_interesting = 0; |
0ab9ce85 DE |
1742 | |
1743 | /* Context stack is initially empty. Allocate first one with room | |
1744 | for a few levels; reuse it forever afterward. */ | |
1745 | if (context_stack == NULL) | |
1746 | { | |
1747 | context_stack_size = INITIAL_CONTEXT_STACK_SIZE; | |
8d749320 | 1748 | context_stack = XNEWVEC (struct context_stack, context_stack_size); |
0ab9ce85 DE |
1749 | } |
1750 | ||
33c7c59d | 1751 | /* Ensure the scoped_free_pendings destructor was called after |
0ab9ce85 DE |
1752 | the last time. */ |
1753 | gdb_assert (free_pendings == NULL); | |
1754 | gdb_assert (pending_blocks == NULL); | |
1755 | gdb_assert (file_symbols == NULL); | |
1756 | gdb_assert (global_symbols == NULL); | |
22cee43f | 1757 | gdb_assert (global_using_directives == NULL); |
0ab9ce85 DE |
1758 | gdb_assert (pending_addrmap == NULL); |
1759 | gdb_assert (buildsym_compunit == NULL); | |
c906108c SS |
1760 | } |
1761 | ||
1762 | /* Initialize anything that needs initializing when a completely new | |
1763 | symbol file is specified (not just adding some symbols from another | |
1764 | file, e.g. a shared library). */ | |
1765 | ||
1766 | void | |
fba45db2 | 1767 | buildsym_new_init (void) |
c906108c SS |
1768 | { |
1769 | buildsym_init (); | |
1770 | } |