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 | ||
33c7c59d | 28 | scoped_free_pendings free_pending; |
0ab9ce85 DE |
29 | cust = start_symtab (...); |
30 | ... read debug info ... | |
31 | cust = end_symtab (...); | |
0ab9ce85 DE |
32 | |
33 | The compunit symtab pointer ("cust") is returned from both start_symtab | |
34 | and end_symtab to simplify the debug info readers. | |
35 | ||
36 | There are minor variations on this, e.g., dwarf2read.c splits end_symtab | |
37 | into two calls: end_symtab_get_static_block, end_symtab_from_static_block, | |
38 | but all debug info readers follow this basic flow. | |
39 | ||
40 | Reading DWARF Type Units is another variation: | |
41 | ||
33c7c59d | 42 | scoped_free_pendings free_pending; |
0ab9ce85 DE |
43 | cust = start_symtab (...); |
44 | ... read debug info ... | |
45 | cust = end_expandable_symtab (...); | |
0ab9ce85 DE |
46 | |
47 | And then reading subsequent Type Units within the containing "Comp Unit" | |
48 | will use a second flow: | |
49 | ||
33c7c59d | 50 | scoped_free_pendings free_pending; |
0ab9ce85 DE |
51 | cust = restart_symtab (...); |
52 | ... read debug info ... | |
53 | cust = augment_type_symtab (...); | |
0ab9ce85 DE |
54 | |
55 | dbxread.c and xcoffread.c use another variation: | |
56 | ||
33c7c59d | 57 | scoped_free_pendings free_pending; |
0ab9ce85 DE |
58 | cust = start_symtab (...); |
59 | ... read debug info ... | |
60 | cust = end_symtab (...); | |
61 | ... start_symtab + read + end_symtab repeated ... | |
0ab9ce85 | 62 | */ |
c906108c SS |
63 | |
64 | #include "defs.h" | |
b80a981d | 65 | #include "buildsym.h" |
c906108c | 66 | #include "bfd.h" |
04ea0df1 | 67 | #include "gdb_obstack.h" |
c906108c | 68 | #include "symtab.h" |
72367fb4 | 69 | #include "symfile.h" |
c906108c SS |
70 | #include "objfiles.h" |
71 | #include "gdbtypes.h" | |
72 | #include "complaints.h" | |
4a64f543 | 73 | #include "expression.h" /* For "enum exp_opcode" used by... */ |
4a64f543 | 74 | #include "filenames.h" /* For DOSish file names. */ |
99d9066e | 75 | #include "macrotab.h" |
261397f8 | 76 | #include "demangle.h" /* Needed by SYMBOL_INIT_DEMANGLED_NAME. */ |
fe898f56 | 77 | #include "block.h" |
9219021c | 78 | #include "cp-support.h" |
de4f826b | 79 | #include "dictionary.h" |
801e3a5b | 80 | #include "addrmap.h" |
b05628f0 | 81 | #include <algorithm> |
9219021c | 82 | |
0a0edcd5 | 83 | /* For cleanup_undefined_stabs_types and finish_global_stabs (somewhat |
c906108c SS |
84 | questionable--see comment where we call them). */ |
85 | ||
86 | #include "stabsread.h" | |
87 | ||
ddb70602 | 88 | /* Buildsym's counterpart to struct compunit_symtab. */ |
4d663531 | 89 | |
43f3e411 DE |
90 | struct buildsym_compunit |
91 | { | |
b248663f TT |
92 | /* Start recording information about a primary source file (IOW, not an |
93 | included source file). | |
94 | COMP_DIR is the directory in which the compilation unit was compiled | |
95 | (or NULL if not known). */ | |
96 | ||
c0015d44 | 97 | buildsym_compunit (struct objfile *objfile_, const char *name, |
2c99ee5c TT |
98 | const char *comp_dir_, enum language language_, |
99 | CORE_ADDR last_addr) | |
b248663f | 100 | : objfile (objfile_), |
c0015d44 | 101 | m_last_source_file (name == nullptr ? nullptr : xstrdup (name)), |
b248663f | 102 | comp_dir (comp_dir_ == nullptr ? nullptr : xstrdup (comp_dir_)), |
2c99ee5c TT |
103 | language (language_), |
104 | m_last_source_start_addr (last_addr) | |
b248663f TT |
105 | { |
106 | } | |
107 | ||
108 | ~buildsym_compunit () | |
109 | { | |
110 | struct subfile *subfile, *nextsub; | |
111 | ||
6a976300 TT |
112 | if (m_pending_macros != nullptr) |
113 | free_macro_table (m_pending_macros); | |
114 | ||
b248663f TT |
115 | for (subfile = subfiles; |
116 | subfile != NULL; | |
117 | subfile = nextsub) | |
118 | { | |
119 | nextsub = subfile->next; | |
120 | xfree (subfile->name); | |
121 | xfree (subfile->line_vector); | |
122 | xfree (subfile); | |
123 | } | |
e148f09d TT |
124 | |
125 | struct pending *next, *next1; | |
126 | ||
127 | for (next = m_file_symbols; next != NULL; next = next1) | |
128 | { | |
129 | next1 = next->next; | |
130 | xfree ((void *) next); | |
131 | } | |
132 | ||
133 | for (next = m_global_symbols; next != NULL; next = next1) | |
134 | { | |
135 | next1 = next->next; | |
136 | xfree ((void *) next); | |
137 | } | |
b248663f TT |
138 | } |
139 | ||
c0015d44 TT |
140 | void set_last_source_file (const char *name) |
141 | { | |
142 | char *new_name = name == NULL ? NULL : xstrdup (name); | |
143 | m_last_source_file.reset (new_name); | |
144 | } | |
145 | ||
6a976300 TT |
146 | struct macro_table *get_macro_table () |
147 | { | |
148 | if (m_pending_macros == nullptr) | |
149 | m_pending_macros = new_macro_table (&objfile->per_bfd->storage_obstack, | |
150 | objfile->per_bfd->macro_cache, | |
151 | compunit_symtab); | |
152 | return m_pending_macros; | |
153 | } | |
154 | ||
155 | struct macro_table *release_macros () | |
156 | { | |
157 | struct macro_table *result = m_pending_macros; | |
158 | m_pending_macros = nullptr; | |
159 | return result; | |
160 | } | |
161 | ||
5ac04550 TT |
162 | /* This function is called to discard any pending blocks. */ |
163 | ||
164 | void free_pending_blocks () | |
165 | { | |
166 | m_pending_block_obstack.clear (); | |
167 | m_pending_blocks = nullptr; | |
168 | } | |
169 | ||
43f3e411 DE |
170 | /* The objfile we're reading debug info from. */ |
171 | struct objfile *objfile; | |
172 | ||
173 | /* List of subfiles (source files). | |
174 | Files are added to the front of the list. | |
175 | This is important mostly for the language determination hacks we use, | |
176 | which iterate over previously added files. */ | |
b248663f | 177 | struct subfile *subfiles = nullptr; |
43f3e411 DE |
178 | |
179 | /* The subfile of the main source file. */ | |
b248663f | 180 | struct subfile *main_subfile = nullptr; |
4d663531 | 181 | |
c0015d44 TT |
182 | /* Name of source file whose symbol data we are now processing. This |
183 | comes from a symbol of type N_SO for stabs. For DWARF it comes | |
184 | from the DW_AT_name attribute of a DW_TAG_compile_unit DIE. */ | |
185 | gdb::unique_xmalloc_ptr<char> m_last_source_file; | |
186 | ||
43f3e411 | 187 | /* E.g., DW_AT_comp_dir if DWARF. Space for this is malloc'd. */ |
905eb0e2 | 188 | gdb::unique_xmalloc_ptr<char> comp_dir; |
4d663531 | 189 | |
43f3e411 DE |
190 | /* Space for this is not malloc'd, and is assumed to have at least |
191 | the same lifetime as objfile. */ | |
b248663f | 192 | const char *producer = nullptr; |
4d663531 | 193 | |
43f3e411 DE |
194 | /* Space for this is not malloc'd, and is assumed to have at least |
195 | the same lifetime as objfile. */ | |
b248663f | 196 | const char *debugformat = nullptr; |
94d09e04 | 197 | |
43f3e411 | 198 | /* The compunit we are building. */ |
b248663f | 199 | struct compunit_symtab *compunit_symtab = nullptr; |
5ffa0793 PA |
200 | |
201 | /* Language of this compunit_symtab. */ | |
202 | enum language language; | |
6a976300 TT |
203 | |
204 | /* The macro table for the compilation unit whose symbols we're | |
205 | currently reading. */ | |
206 | struct macro_table *m_pending_macros = nullptr; | |
530fedbc TT |
207 | |
208 | /* True if symtab has line number info. This prevents an otherwise | |
209 | empty symtab from being tossed. */ | |
210 | bool m_have_line_numbers = false; | |
2c99ee5c TT |
211 | |
212 | /* Core address of start of text of current source file. This too | |
213 | comes from the N_SO symbol. For Dwarf it typically comes from the | |
214 | DW_AT_low_pc attribute of a DW_TAG_compile_unit DIE. */ | |
215 | CORE_ADDR m_last_source_start_addr; | |
8419ee53 TT |
216 | |
217 | /* Stack of subfile names. */ | |
218 | std::vector<const char *> m_subfile_stack; | |
6cccc9a8 TT |
219 | |
220 | /* The "using" directives local to lexical context. */ | |
221 | struct using_direct *m_local_using_directives = nullptr; | |
222 | ||
223 | /* Global "using" directives. */ | |
224 | struct using_direct *m_global_using_directives = nullptr; | |
a60f3166 TT |
225 | |
226 | /* The stack of contexts that are pushed by push_context and popped | |
227 | by pop_context. */ | |
228 | std::vector<struct context_stack> m_context_stack; | |
3c65e5b3 TT |
229 | |
230 | struct subfile *m_current_subfile = nullptr; | |
7ea05a7b TT |
231 | |
232 | /* The mutable address map for the compilation unit whose symbols | |
233 | we're currently reading. The symtabs' shared blockvector will | |
234 | point to a fixed copy of this. */ | |
235 | struct addrmap *m_pending_addrmap = nullptr; | |
236 | ||
237 | /* The obstack on which we allocate pending_addrmap. | |
238 | If pending_addrmap is NULL, this is uninitialized; otherwise, it is | |
239 | initialized (and holds pending_addrmap). */ | |
240 | auto_obstack m_pending_addrmap_obstack; | |
241 | ||
242 | /* True if we recorded any ranges in the addrmap that are different | |
243 | from those in the blockvector already. We set this to false when | |
244 | we start processing a symfile, and if it's still false at the | |
245 | end, then we just toss the addrmap. */ | |
246 | bool m_pending_addrmap_interesting = false; | |
5ac04550 TT |
247 | |
248 | /* An obstack used for allocating pending blocks. */ | |
249 | auto_obstack m_pending_block_obstack; | |
250 | ||
251 | /* Pointer to the head of a linked list of symbol blocks which have | |
252 | already been finalized (lexical contexts already closed) and which | |
253 | are just waiting to be built into a blockvector when finalizing the | |
254 | associated symtab. */ | |
255 | struct pending_block *m_pending_blocks = nullptr; | |
e148f09d TT |
256 | |
257 | /* Pending static symbols and types at the top level. */ | |
258 | struct pending *m_file_symbols = nullptr; | |
259 | ||
260 | /* Pending global functions and variables. */ | |
261 | struct pending *m_global_symbols = nullptr; | |
262 | ||
263 | /* Pending symbols that are local to the lexical context. */ | |
264 | struct pending *m_local_symbols = nullptr; | |
43f3e411 | 265 | }; |
94d09e04 | 266 | |
43f3e411 DE |
267 | /* The work-in-progress of the compunit we are building. |
268 | This is created first, before any subfiles by start_symtab. */ | |
7bab9b58 | 269 | |
43f3e411 | 270 | static struct buildsym_compunit *buildsym_compunit; |
7bab9b58 | 271 | |
93eed41f TT |
272 | /* List of blocks already made (lexical contexts already closed). |
273 | This is used at the end to make the blockvector. */ | |
274 | ||
275 | struct pending_block | |
276 | { | |
277 | struct pending_block *next; | |
278 | struct block *block; | |
279 | }; | |
280 | ||
0ab9ce85 DE |
281 | static void free_buildsym_compunit (void); |
282 | ||
c906108c | 283 | static int compare_line_numbers (const void *ln1p, const void *ln2p); |
0b49e518 | 284 | |
c906108c SS |
285 | /* Initial sizes of data structures. These are realloc'd larger if |
286 | needed, and realloc'd down to the size actually used, when | |
287 | completed. */ | |
288 | ||
c906108c SS |
289 | #define INITIAL_LINE_VECTOR_LENGTH 1000 |
290 | \f | |
291 | ||
4a64f543 | 292 | /* Maintain the lists of symbols and blocks. */ |
c906108c | 293 | |
93bf33fd | 294 | /* Add a symbol to one of the lists of symbols. */ |
c906108c SS |
295 | |
296 | void | |
297 | add_symbol_to_list (struct symbol *symbol, struct pending **listhead) | |
298 | { | |
52f0bd74 | 299 | struct pending *link; |
c906108c SS |
300 | |
301 | /* If this is an alias for another symbol, don't add it. */ | |
302 | if (symbol->ginfo.name && symbol->ginfo.name[0] == '#') | |
303 | return; | |
304 | ||
4a64f543 | 305 | /* We keep PENDINGSIZE symbols in each link of the list. If we |
c906108c SS |
306 | don't have a link with room in it, add a new link. */ |
307 | if (*listhead == NULL || (*listhead)->nsyms == PENDINGSIZE) | |
308 | { | |
1d376700 | 309 | link = XNEW (struct pending); |
c906108c SS |
310 | link->next = *listhead; |
311 | *listhead = link; | |
312 | link->nsyms = 0; | |
313 | } | |
314 | ||
315 | (*listhead)->symbol[(*listhead)->nsyms++] = symbol; | |
316 | } | |
317 | ||
318 | /* Find a symbol named NAME on a LIST. NAME need not be | |
319 | '\0'-terminated; LENGTH is the length of the name. */ | |
320 | ||
321 | struct symbol * | |
322 | find_symbol_in_list (struct pending *list, char *name, int length) | |
323 | { | |
324 | int j; | |
0d5cff50 | 325 | const char *pp; |
c906108c SS |
326 | |
327 | while (list != NULL) | |
328 | { | |
329 | for (j = list->nsyms; --j >= 0;) | |
330 | { | |
3567439c | 331 | pp = SYMBOL_LINKAGE_NAME (list->symbol[j]); |
5aafa1cc PM |
332 | if (*pp == *name && strncmp (pp, name, length) == 0 |
333 | && pp[length] == '\0') | |
c906108c SS |
334 | { |
335 | return (list->symbol[j]); | |
336 | } | |
337 | } | |
338 | list = list->next; | |
339 | } | |
340 | return (NULL); | |
341 | } | |
342 | ||
33c7c59d TT |
343 | /* At end of reading syms, or in case of quit, ensure everything |
344 | associated with building symtabs is freed. | |
0ab9ce85 DE |
345 | |
346 | N.B. This is *not* intended to be used when building psymtabs. Some debug | |
347 | info readers call this anyway, which is harmless if confusing. */ | |
c906108c | 348 | |
33c7c59d | 349 | scoped_free_pendings::~scoped_free_pendings () |
c906108c | 350 | { |
0ab9ce85 | 351 | free_buildsym_compunit (); |
c906108c SS |
352 | } |
353 | ||
6b213a47 TT |
354 | /* Record BLOCK on the list of all blocks in the file. Put it after |
355 | OPBLOCK, or at the beginning if opblock is NULL. This puts the | |
356 | block in the list after all its subblocks. */ | |
357 | ||
358 | static void | |
359 | record_pending_block (struct block *block, struct pending_block *opblock) | |
360 | { | |
361 | struct pending_block *pblock; | |
362 | ||
363 | pblock = XOBNEW (&buildsym_compunit->m_pending_block_obstack, | |
364 | struct pending_block); | |
365 | pblock->block = block; | |
366 | if (opblock) | |
367 | { | |
368 | pblock->next = opblock->next; | |
369 | opblock->next = pblock; | |
370 | } | |
371 | else | |
372 | { | |
373 | pblock->next = buildsym_compunit->m_pending_blocks; | |
374 | buildsym_compunit->m_pending_blocks = pblock; | |
375 | } | |
376 | } | |
377 | ||
c906108c SS |
378 | /* Take one of the lists of symbols and make a block from it. Keep |
379 | the order the symbols have in the list (reversed from the input | |
380 | file). Put the block on the list of pending blocks. */ | |
381 | ||
84a146c9 | 382 | static struct block * |
63e43d3a PMR |
383 | finish_block_internal (struct symbol *symbol, |
384 | struct pending **listhead, | |
84a146c9 | 385 | struct pending_block *old_blocks, |
63e43d3a | 386 | const struct dynamic_prop *static_link, |
84a146c9 | 387 | CORE_ADDR start, CORE_ADDR end, |
6d30eef8 | 388 | int is_global, int expandable) |
c906108c | 389 | { |
43f3e411 | 390 | struct objfile *objfile = buildsym_compunit->objfile; |
5af949e3 | 391 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 AC |
392 | struct pending *next, *next1; |
393 | struct block *block; | |
394 | struct pending_block *pblock; | |
c906108c | 395 | struct pending_block *opblock; |
c906108c | 396 | |
84a146c9 TT |
397 | block = (is_global |
398 | ? allocate_global_block (&objfile->objfile_obstack) | |
399 | : allocate_block (&objfile->objfile_obstack)); | |
c906108c | 400 | |
261397f8 DJ |
401 | if (symbol) |
402 | { | |
5ffa0793 PA |
403 | BLOCK_DICT (block) |
404 | = dict_create_linear (&objfile->objfile_obstack, | |
405 | buildsym_compunit->language, *listhead); | |
261397f8 DJ |
406 | } |
407 | else | |
c906108c | 408 | { |
6d30eef8 DE |
409 | if (expandable) |
410 | { | |
5ffa0793 PA |
411 | BLOCK_DICT (block) |
412 | = dict_create_hashed_expandable (buildsym_compunit->language); | |
6d30eef8 DE |
413 | dict_add_pending (BLOCK_DICT (block), *listhead); |
414 | } | |
415 | else | |
416 | { | |
417 | BLOCK_DICT (block) = | |
5ffa0793 PA |
418 | dict_create_hashed (&objfile->objfile_obstack, |
419 | buildsym_compunit->language, *listhead); | |
6d30eef8 | 420 | } |
c906108c SS |
421 | } |
422 | ||
423 | BLOCK_START (block) = start; | |
424 | BLOCK_END (block) = end; | |
c906108c | 425 | |
c906108c SS |
426 | /* Put the block in as the value of the symbol that names it. */ |
427 | ||
428 | if (symbol) | |
429 | { | |
430 | struct type *ftype = SYMBOL_TYPE (symbol); | |
de4f826b | 431 | struct dict_iterator iter; |
c906108c SS |
432 | SYMBOL_BLOCK_VALUE (symbol) = block; |
433 | BLOCK_FUNCTION (block) = symbol; | |
434 | ||
435 | if (TYPE_NFIELDS (ftype) <= 0) | |
436 | { | |
437 | /* No parameter type information is recorded with the | |
438 | function's type. Set that from the type of the | |
4a64f543 | 439 | parameter symbols. */ |
c906108c SS |
440 | int nparams = 0, iparams; |
441 | struct symbol *sym; | |
8157b174 TT |
442 | |
443 | /* Here we want to directly access the dictionary, because | |
444 | we haven't fully initialized the block yet. */ | |
445 | ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym) | |
c906108c | 446 | { |
2a2d4dc3 AS |
447 | if (SYMBOL_IS_ARGUMENT (sym)) |
448 | nparams++; | |
c906108c SS |
449 | } |
450 | if (nparams > 0) | |
451 | { | |
452 | TYPE_NFIELDS (ftype) = nparams; | |
453 | TYPE_FIELDS (ftype) = (struct field *) | |
454 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
455 | ||
de4f826b | 456 | iparams = 0; |
8157b174 TT |
457 | /* Here we want to directly access the dictionary, because |
458 | we haven't fully initialized the block yet. */ | |
459 | ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym) | |
c906108c | 460 | { |
de4f826b DC |
461 | if (iparams == nparams) |
462 | break; | |
463 | ||
2a2d4dc3 | 464 | if (SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 465 | { |
c906108c | 466 | TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym); |
8176bb6d | 467 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c | 468 | iparams++; |
c906108c SS |
469 | } |
470 | } | |
471 | } | |
472 | } | |
473 | } | |
474 | else | |
475 | { | |
476 | BLOCK_FUNCTION (block) = NULL; | |
477 | } | |
478 | ||
63e43d3a PMR |
479 | if (static_link != NULL) |
480 | objfile_register_static_link (objfile, block, static_link); | |
481 | ||
1d376700 | 482 | /* Now free the links of the list, and empty the list. */ |
c906108c SS |
483 | |
484 | for (next = *listhead; next; next = next1) | |
485 | { | |
486 | next1 = next->next; | |
1d376700 | 487 | xfree (next); |
c906108c SS |
488 | } |
489 | *listhead = NULL; | |
490 | ||
c906108c | 491 | /* Check to be sure that the blocks have an end address that is |
4a64f543 | 492 | greater than starting address. */ |
c906108c SS |
493 | |
494 | if (BLOCK_END (block) < BLOCK_START (block)) | |
495 | { | |
496 | if (symbol) | |
497 | { | |
b98664d3 | 498 | complaint (_("block end address less than block " |
3e43a32a | 499 | "start address in %s (patched it)"), |
de5ad195 | 500 | SYMBOL_PRINT_NAME (symbol)); |
c906108c SS |
501 | } |
502 | else | |
503 | { | |
b98664d3 | 504 | complaint (_("block end address %s less than block " |
3e43a32a | 505 | "start address %s (patched it)"), |
5af949e3 UW |
506 | paddress (gdbarch, BLOCK_END (block)), |
507 | paddress (gdbarch, BLOCK_START (block))); | |
c906108c | 508 | } |
4a64f543 | 509 | /* Better than nothing. */ |
c906108c SS |
510 | BLOCK_END (block) = BLOCK_START (block); |
511 | } | |
c906108c SS |
512 | |
513 | /* Install this block as the superblock of all blocks made since the | |
514 | start of this scope that don't have superblocks yet. */ | |
515 | ||
516 | opblock = NULL; | |
5ac04550 | 517 | for (pblock = buildsym_compunit->m_pending_blocks; |
c0219d42 MS |
518 | pblock && pblock != old_blocks; |
519 | pblock = pblock->next) | |
c906108c SS |
520 | { |
521 | if (BLOCK_SUPERBLOCK (pblock->block) == NULL) | |
522 | { | |
c906108c | 523 | /* Check to be sure the blocks are nested as we receive |
4a64f543 | 524 | them. If the compiler/assembler/linker work, this just |
14711c82 DJ |
525 | burns a small amount of time. |
526 | ||
527 | Skip blocks which correspond to a function; they're not | |
528 | physically nested inside this other blocks, only | |
529 | lexically nested. */ | |
530 | if (BLOCK_FUNCTION (pblock->block) == NULL | |
531 | && (BLOCK_START (pblock->block) < BLOCK_START (block) | |
532 | || BLOCK_END (pblock->block) > BLOCK_END (block))) | |
c906108c SS |
533 | { |
534 | if (symbol) | |
535 | { | |
b98664d3 | 536 | complaint (_("inner block not inside outer block in %s"), |
de5ad195 | 537 | SYMBOL_PRINT_NAME (symbol)); |
c906108c SS |
538 | } |
539 | else | |
540 | { | |
b98664d3 | 541 | complaint (_("inner block (%s-%s) not " |
3e43a32a | 542 | "inside outer block (%s-%s)"), |
5af949e3 UW |
543 | paddress (gdbarch, BLOCK_START (pblock->block)), |
544 | paddress (gdbarch, BLOCK_END (pblock->block)), | |
545 | paddress (gdbarch, BLOCK_START (block)), | |
546 | paddress (gdbarch, BLOCK_END (block))); | |
c906108c SS |
547 | } |
548 | if (BLOCK_START (pblock->block) < BLOCK_START (block)) | |
549 | BLOCK_START (pblock->block) = BLOCK_START (block); | |
550 | if (BLOCK_END (pblock->block) > BLOCK_END (block)) | |
551 | BLOCK_END (pblock->block) = BLOCK_END (block); | |
552 | } | |
c906108c SS |
553 | BLOCK_SUPERBLOCK (pblock->block) = block; |
554 | } | |
555 | opblock = pblock; | |
556 | } | |
557 | ||
22cee43f PMR |
558 | block_set_using (block, |
559 | (is_global | |
6cccc9a8 TT |
560 | ? buildsym_compunit->m_global_using_directives |
561 | : buildsym_compunit->m_local_using_directives), | |
22cee43f PMR |
562 | &objfile->objfile_obstack); |
563 | if (is_global) | |
6cccc9a8 | 564 | buildsym_compunit->m_global_using_directives = NULL; |
22cee43f | 565 | else |
6cccc9a8 | 566 | buildsym_compunit->m_local_using_directives = NULL; |
27aa8d6a | 567 | |
6b213a47 | 568 | record_pending_block (block, opblock); |
801e3a5b JB |
569 | |
570 | return block; | |
c906108c SS |
571 | } |
572 | ||
84a146c9 | 573 | struct block * |
63e43d3a | 574 | finish_block (struct symbol *symbol, |
84a146c9 | 575 | struct pending_block *old_blocks, |
63e43d3a | 576 | const struct dynamic_prop *static_link, |
4d663531 | 577 | CORE_ADDR start, CORE_ADDR end) |
84a146c9 | 578 | { |
e148f09d TT |
579 | return finish_block_internal (symbol, &buildsym_compunit->m_local_symbols, |
580 | old_blocks, static_link, | |
4d663531 | 581 | start, end, 0, 0); |
84a146c9 | 582 | } |
de4f826b | 583 | |
801e3a5b JB |
584 | /* Record that the range of addresses from START to END_INCLUSIVE |
585 | (inclusive, like it says) belongs to BLOCK. BLOCK's start and end | |
586 | addresses must be set already. You must apply this function to all | |
587 | BLOCK's children before applying it to BLOCK. | |
588 | ||
589 | If a call to this function complicates the picture beyond that | |
590 | already provided by BLOCK_START and BLOCK_END, then we create an | |
591 | address map for the block. */ | |
592 | void | |
593 | record_block_range (struct block *block, | |
594 | CORE_ADDR start, CORE_ADDR end_inclusive) | |
595 | { | |
596 | /* If this is any different from the range recorded in the block's | |
597 | own BLOCK_START and BLOCK_END, then note that the address map has | |
598 | become interesting. Note that even if this block doesn't have | |
599 | any "interesting" ranges, some later block might, so we still | |
600 | need to record this block in the addrmap. */ | |
601 | if (start != BLOCK_START (block) | |
602 | || end_inclusive + 1 != BLOCK_END (block)) | |
7ea05a7b | 603 | buildsym_compunit->m_pending_addrmap_interesting = true; |
801e3a5b | 604 | |
7ea05a7b TT |
605 | if (buildsym_compunit->m_pending_addrmap == nullptr) |
606 | buildsym_compunit->m_pending_addrmap | |
607 | = addrmap_create_mutable (&buildsym_compunit->m_pending_addrmap_obstack); | |
801e3a5b | 608 | |
7ea05a7b TT |
609 | addrmap_set_empty (buildsym_compunit->m_pending_addrmap, |
610 | start, end_inclusive, block); | |
801e3a5b JB |
611 | } |
612 | ||
822e978b | 613 | static struct blockvector * |
43f3e411 | 614 | make_blockvector (void) |
c906108c | 615 | { |
43f3e411 | 616 | struct objfile *objfile = buildsym_compunit->objfile; |
52f0bd74 AC |
617 | struct pending_block *next; |
618 | struct blockvector *blockvector; | |
619 | int i; | |
c906108c SS |
620 | |
621 | /* Count the length of the list of blocks. */ | |
622 | ||
5ac04550 TT |
623 | for (next = buildsym_compunit->m_pending_blocks, i = 0; |
624 | next; | |
625 | next = next->next, i++) | |
626 | { | |
c906108c SS |
627 | } |
628 | ||
629 | blockvector = (struct blockvector *) | |
4a146b47 | 630 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
631 | (sizeof (struct blockvector) |
632 | + (i - 1) * sizeof (struct block *))); | |
633 | ||
4a64f543 | 634 | /* Copy the blocks into the blockvector. This is done in reverse |
c906108c | 635 | order, which happens to put the blocks into the proper order |
4a64f543 | 636 | (ascending starting address). finish_block has hair to insert |
c906108c SS |
637 | each block into the list after its subblocks in order to make |
638 | sure this is true. */ | |
639 | ||
640 | BLOCKVECTOR_NBLOCKS (blockvector) = i; | |
5ac04550 | 641 | for (next = buildsym_compunit->m_pending_blocks; next; next = next->next) |
c906108c SS |
642 | { |
643 | BLOCKVECTOR_BLOCK (blockvector, --i) = next->block; | |
644 | } | |
645 | ||
5ac04550 | 646 | buildsym_compunit->free_pending_blocks (); |
c906108c | 647 | |
801e3a5b JB |
648 | /* If we needed an address map for this symtab, record it in the |
649 | blockvector. */ | |
7ea05a7b TT |
650 | if (buildsym_compunit->m_pending_addrmap != nullptr |
651 | && buildsym_compunit->m_pending_addrmap_interesting) | |
801e3a5b | 652 | BLOCKVECTOR_MAP (blockvector) |
7ea05a7b TT |
653 | = addrmap_create_fixed (buildsym_compunit->m_pending_addrmap, |
654 | &objfile->objfile_obstack); | |
801e3a5b JB |
655 | else |
656 | BLOCKVECTOR_MAP (blockvector) = 0; | |
4aad0dfc | 657 | |
c906108c | 658 | /* Some compilers output blocks in the wrong order, but we depend on |
4a64f543 | 659 | their being in the right order so we can binary search. Check the |
4aad0dfc DE |
660 | order and moan about it. |
661 | Note: Remember that the first two blocks are the global and static | |
662 | blocks. We could special case that fact and begin checking at block 2. | |
663 | To avoid making that assumption we do not. */ | |
c906108c SS |
664 | if (BLOCKVECTOR_NBLOCKS (blockvector) > 1) |
665 | { | |
666 | for (i = 1; i < BLOCKVECTOR_NBLOCKS (blockvector); i++) | |
667 | { | |
668 | if (BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i - 1)) | |
669 | > BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i))) | |
670 | { | |
59527da0 JB |
671 | CORE_ADDR start |
672 | = BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i)); | |
c906108c | 673 | |
b98664d3 | 674 | complaint (_("block at %s out of order"), |
bb599908 | 675 | hex_string ((LONGEST) start)); |
c906108c SS |
676 | } |
677 | } | |
678 | } | |
c906108c SS |
679 | |
680 | return (blockvector); | |
681 | } | |
682 | \f | |
683 | /* Start recording information about source code that came from an | |
684 | included (or otherwise merged-in) source file with a different | |
4d663531 | 685 | name. NAME is the name of the file (cannot be NULL). */ |
c906108c SS |
686 | |
687 | void | |
4d663531 | 688 | start_subfile (const char *name) |
c906108c | 689 | { |
43f3e411 | 690 | const char *subfile_dirname; |
52f0bd74 | 691 | struct subfile *subfile; |
c906108c | 692 | |
43f3e411 DE |
693 | gdb_assert (buildsym_compunit != NULL); |
694 | ||
905eb0e2 | 695 | subfile_dirname = buildsym_compunit->comp_dir.get (); |
c906108c | 696 | |
43f3e411 DE |
697 | /* See if this subfile is already registered. */ |
698 | ||
699 | for (subfile = buildsym_compunit->subfiles; subfile; subfile = subfile->next) | |
c906108c | 700 | { |
84ba0adf DJ |
701 | char *subfile_name; |
702 | ||
703 | /* If NAME is an absolute path, and this subfile is not, then | |
704 | attempt to create an absolute path to compare. */ | |
705 | if (IS_ABSOLUTE_PATH (name) | |
706 | && !IS_ABSOLUTE_PATH (subfile->name) | |
43f3e411 DE |
707 | && subfile_dirname != NULL) |
708 | subfile_name = concat (subfile_dirname, SLASH_STRING, | |
6eb7ee03 | 709 | subfile->name, (char *) NULL); |
84ba0adf DJ |
710 | else |
711 | subfile_name = subfile->name; | |
712 | ||
713 | if (FILENAME_CMP (subfile_name, name) == 0) | |
c906108c | 714 | { |
3c65e5b3 | 715 | buildsym_compunit->m_current_subfile = subfile; |
84ba0adf DJ |
716 | if (subfile_name != subfile->name) |
717 | xfree (subfile_name); | |
c906108c SS |
718 | return; |
719 | } | |
84ba0adf DJ |
720 | if (subfile_name != subfile->name) |
721 | xfree (subfile_name); | |
c906108c SS |
722 | } |
723 | ||
43f3e411 | 724 | /* This subfile is not known. Add an entry for it. */ |
c906108c | 725 | |
8d749320 | 726 | subfile = XNEW (struct subfile); |
43f3e411 DE |
727 | memset (subfile, 0, sizeof (struct subfile)); |
728 | subfile->buildsym_compunit = buildsym_compunit; | |
729 | ||
730 | subfile->next = buildsym_compunit->subfiles; | |
731 | buildsym_compunit->subfiles = subfile; | |
732 | ||
3c65e5b3 | 733 | buildsym_compunit->m_current_subfile = subfile; |
c906108c | 734 | |
b74db436 | 735 | subfile->name = xstrdup (name); |
c906108c SS |
736 | |
737 | /* Initialize line-number recording for this subfile. */ | |
738 | subfile->line_vector = NULL; | |
739 | ||
740 | /* Default the source language to whatever can be deduced from the | |
741 | filename. If nothing can be deduced (such as for a C/C++ include | |
742 | file with a ".h" extension), then inherit whatever language the | |
743 | previous subfile had. This kludgery is necessary because there | |
744 | is no standard way in some object formats to record the source | |
745 | language. Also, when symtabs are allocated we try to deduce a | |
746 | language then as well, but it is too late for us to use that | |
747 | information while reading symbols, since symtabs aren't allocated | |
748 | until after all the symbols have been processed for a given | |
4a64f543 | 749 | source file. */ |
c906108c SS |
750 | |
751 | subfile->language = deduce_language_from_filename (subfile->name); | |
5aafa1cc PM |
752 | if (subfile->language == language_unknown |
753 | && subfile->next != NULL) | |
c906108c SS |
754 | { |
755 | subfile->language = subfile->next->language; | |
756 | } | |
757 | ||
25caa7a8 | 758 | /* If the filename of this subfile ends in .C, then change the |
c906108c | 759 | language of any pending subfiles from C to C++. We also accept |
25caa7a8 | 760 | any other C++ suffixes accepted by deduce_language_from_filename. */ |
c906108c SS |
761 | /* Likewise for f2c. */ |
762 | ||
763 | if (subfile->name) | |
764 | { | |
765 | struct subfile *s; | |
766 | enum language sublang = deduce_language_from_filename (subfile->name); | |
767 | ||
768 | if (sublang == language_cplus || sublang == language_fortran) | |
43f3e411 | 769 | for (s = buildsym_compunit->subfiles; s != NULL; s = s->next) |
c906108c SS |
770 | if (s->language == language_c) |
771 | s->language = sublang; | |
772 | } | |
773 | ||
774 | /* And patch up this file if necessary. */ | |
775 | if (subfile->language == language_c | |
776 | && subfile->next != NULL | |
777 | && (subfile->next->language == language_cplus | |
778 | || subfile->next->language == language_fortran)) | |
779 | { | |
780 | subfile->language = subfile->next->language; | |
781 | } | |
782 | } | |
783 | ||
43f3e411 | 784 | /* Delete the buildsym compunit. */ |
7bab9b58 DE |
785 | |
786 | static void | |
43f3e411 | 787 | free_buildsym_compunit (void) |
7bab9b58 | 788 | { |
43f3e411 DE |
789 | if (buildsym_compunit == NULL) |
790 | return; | |
b248663f | 791 | delete buildsym_compunit; |
43f3e411 | 792 | buildsym_compunit = NULL; |
7bab9b58 DE |
793 | } |
794 | ||
c906108c SS |
795 | /* For stabs readers, the first N_SO symbol is assumed to be the |
796 | source file name, and the subfile struct is initialized using that | |
797 | assumption. If another N_SO symbol is later seen, immediately | |
798 | following the first one, then the first one is assumed to be the | |
799 | directory name and the second one is really the source file name. | |
800 | ||
801 | So we have to patch up the subfile struct by moving the old name | |
802 | value to dirname and remembering the new name. Some sanity | |
803 | checking is performed to ensure that the state of the subfile | |
804 | struct is reasonable and that the old name we are assuming to be a | |
4a64f543 | 805 | directory name actually is (by checking for a trailing '/'). */ |
c906108c SS |
806 | |
807 | void | |
a121b7c1 | 808 | patch_subfile_names (struct subfile *subfile, const char *name) |
c906108c | 809 | { |
43f3e411 DE |
810 | if (subfile != NULL |
811 | && buildsym_compunit->comp_dir == NULL | |
812 | && subfile->name != NULL | |
0ba1096a | 813 | && IS_DIR_SEPARATOR (subfile->name[strlen (subfile->name) - 1])) |
c906108c | 814 | { |
905eb0e2 | 815 | buildsym_compunit->comp_dir.reset (subfile->name); |
1b36a34b | 816 | subfile->name = xstrdup (name); |
46212e0b | 817 | set_last_source_file (name); |
c906108c SS |
818 | |
819 | /* Default the source language to whatever can be deduced from | |
820 | the filename. If nothing can be deduced (such as for a C/C++ | |
821 | include file with a ".h" extension), then inherit whatever | |
822 | language the previous subfile had. This kludgery is | |
823 | necessary because there is no standard way in some object | |
824 | formats to record the source language. Also, when symtabs | |
825 | are allocated we try to deduce a language then as well, but | |
826 | it is too late for us to use that information while reading | |
827 | symbols, since symtabs aren't allocated until after all the | |
4a64f543 | 828 | symbols have been processed for a given source file. */ |
c906108c SS |
829 | |
830 | subfile->language = deduce_language_from_filename (subfile->name); | |
5aafa1cc PM |
831 | if (subfile->language == language_unknown |
832 | && subfile->next != NULL) | |
c906108c SS |
833 | { |
834 | subfile->language = subfile->next->language; | |
835 | } | |
836 | } | |
837 | } | |
838 | \f | |
839 | /* Handle the N_BINCL and N_EINCL symbol types that act like N_SOL for | |
840 | switching source files (different subfiles, as we call them) within | |
841 | one object file, but using a stack rather than in an arbitrary | |
842 | order. */ | |
843 | ||
844 | void | |
8419ee53 | 845 | push_subfile () |
c906108c | 846 | { |
8419ee53 | 847 | gdb_assert (buildsym_compunit != nullptr); |
3c65e5b3 TT |
848 | gdb_assert (buildsym_compunit->m_current_subfile != NULL); |
849 | gdb_assert (buildsym_compunit->m_current_subfile->name != NULL); | |
850 | buildsym_compunit->m_subfile_stack.push_back | |
851 | (buildsym_compunit->m_current_subfile->name); | |
c906108c SS |
852 | } |
853 | ||
8419ee53 TT |
854 | const char * |
855 | pop_subfile () | |
c906108c | 856 | { |
8419ee53 TT |
857 | gdb_assert (buildsym_compunit != nullptr); |
858 | gdb_assert (!buildsym_compunit->m_subfile_stack.empty ()); | |
859 | const char *name = buildsym_compunit->m_subfile_stack.back (); | |
860 | buildsym_compunit->m_subfile_stack.pop_back (); | |
861 | return name; | |
c906108c SS |
862 | } |
863 | \f | |
864 | /* Add a linetable entry for line number LINE and address PC to the | |
865 | line vector for SUBFILE. */ | |
866 | ||
867 | void | |
aa1ee363 | 868 | record_line (struct subfile *subfile, int line, CORE_ADDR pc) |
c906108c SS |
869 | { |
870 | struct linetable_entry *e; | |
c906108c | 871 | |
cc59ec59 | 872 | /* Ignore the dummy line number in libg.o */ |
c906108c SS |
873 | if (line == 0xffff) |
874 | { | |
875 | return; | |
876 | } | |
877 | ||
878 | /* Make sure line vector exists and is big enough. */ | |
879 | if (!subfile->line_vector) | |
880 | { | |
881 | subfile->line_vector_length = INITIAL_LINE_VECTOR_LENGTH; | |
882 | subfile->line_vector = (struct linetable *) | |
883 | xmalloc (sizeof (struct linetable) | |
c5aa993b | 884 | + subfile->line_vector_length * sizeof (struct linetable_entry)); |
c906108c | 885 | subfile->line_vector->nitems = 0; |
530fedbc | 886 | buildsym_compunit->m_have_line_numbers = true; |
c906108c SS |
887 | } |
888 | ||
889 | if (subfile->line_vector->nitems + 1 >= subfile->line_vector_length) | |
890 | { | |
891 | subfile->line_vector_length *= 2; | |
892 | subfile->line_vector = (struct linetable *) | |
893 | xrealloc ((char *) subfile->line_vector, | |
894 | (sizeof (struct linetable) | |
895 | + (subfile->line_vector_length | |
896 | * sizeof (struct linetable_entry)))); | |
897 | } | |
898 | ||
607ae575 DJ |
899 | /* Normally, we treat lines as unsorted. But the end of sequence |
900 | marker is special. We sort line markers at the same PC by line | |
901 | number, so end of sequence markers (which have line == 0) appear | |
902 | first. This is right if the marker ends the previous function, | |
903 | and there is no padding before the next function. But it is | |
904 | wrong if the previous line was empty and we are now marking a | |
905 | switch to a different subfile. We must leave the end of sequence | |
906 | marker at the end of this group of lines, not sort the empty line | |
907 | to after the marker. The easiest way to accomplish this is to | |
908 | delete any empty lines from our table, if they are followed by | |
909 | end of sequence markers. All we lose is the ability to set | |
910 | breakpoints at some lines which contain no instructions | |
911 | anyway. */ | |
912 | if (line == 0 && subfile->line_vector->nitems > 0) | |
913 | { | |
914 | e = subfile->line_vector->item + subfile->line_vector->nitems - 1; | |
915 | while (subfile->line_vector->nitems > 0 && e->pc == pc) | |
916 | { | |
917 | e--; | |
918 | subfile->line_vector->nitems--; | |
919 | } | |
920 | } | |
921 | ||
c906108c SS |
922 | e = subfile->line_vector->item + subfile->line_vector->nitems++; |
923 | e->line = line; | |
607ae575 | 924 | e->pc = pc; |
c906108c SS |
925 | } |
926 | ||
927 | /* Needed in order to sort line tables from IBM xcoff files. Sigh! */ | |
928 | ||
929 | static int | |
930 | compare_line_numbers (const void *ln1p, const void *ln2p) | |
931 | { | |
932 | struct linetable_entry *ln1 = (struct linetable_entry *) ln1p; | |
933 | struct linetable_entry *ln2 = (struct linetable_entry *) ln2p; | |
934 | ||
935 | /* Note: this code does not assume that CORE_ADDRs can fit in ints. | |
936 | Please keep it that way. */ | |
937 | if (ln1->pc < ln2->pc) | |
938 | return -1; | |
939 | ||
940 | if (ln1->pc > ln2->pc) | |
941 | return 1; | |
942 | ||
943 | /* If pc equal, sort by line. I'm not sure whether this is optimum | |
944 | behavior (see comment at struct linetable in symtab.h). */ | |
945 | return ln1->line - ln2->line; | |
946 | } | |
947 | \f | |
43f3e411 DE |
948 | /* See buildsym.h. */ |
949 | ||
950 | struct compunit_symtab * | |
951 | buildsym_compunit_symtab (void) | |
952 | { | |
953 | gdb_assert (buildsym_compunit != NULL); | |
954 | ||
955 | return buildsym_compunit->compunit_symtab; | |
956 | } | |
957 | ||
958 | /* See buildsym.h. */ | |
fc474241 DE |
959 | |
960 | struct macro_table * | |
43f3e411 | 961 | get_macro_table (void) |
fc474241 | 962 | { |
43f3e411 DE |
963 | struct objfile *objfile; |
964 | ||
965 | gdb_assert (buildsym_compunit != NULL); | |
6a976300 | 966 | return buildsym_compunit->get_macro_table (); |
fc474241 DE |
967 | } |
968 | \f | |
4d663531 | 969 | /* Start a new symtab for a new source file in OBJFILE. Called, for example, |
c906108c SS |
970 | when a stabs symbol of type N_SO is seen, or when a DWARF |
971 | TAG_compile_unit DIE is seen. It indicates the start of data for | |
0b0287a1 DE |
972 | one original source file. |
973 | ||
5ffa0793 PA |
974 | NAME is the name of the file (cannot be NULL). COMP_DIR is the |
975 | directory in which the file was compiled (or NULL if not known). | |
976 | START_ADDR is the lowest address of objects in the file (or 0 if | |
977 | not known). LANGUAGE is the language of the source file, or | |
978 | language_unknown if not known, in which case it'll be deduced from | |
979 | the filename. */ | |
c906108c | 980 | |
43f3e411 | 981 | struct compunit_symtab * |
4d663531 | 982 | start_symtab (struct objfile *objfile, const char *name, const char *comp_dir, |
5ffa0793 | 983 | CORE_ADDR start_addr, enum language language) |
c906108c | 984 | { |
b37dd3bc TT |
985 | /* These should have been reset either by successful completion of building |
986 | a symtab, or by the scoped_free_pendings destructor. */ | |
987 | gdb_assert (buildsym_compunit == nullptr); | |
43f3e411 | 988 | |
c0015d44 | 989 | buildsym_compunit = new struct buildsym_compunit (objfile, name, comp_dir, |
2c99ee5c | 990 | language, start_addr); |
43f3e411 | 991 | |
0ab9ce85 | 992 | /* Allocate the compunit symtab now. The caller needs it to allocate |
43f3e411 DE |
993 | non-primary symtabs. It is also needed by get_macro_table. */ |
994 | buildsym_compunit->compunit_symtab = allocate_compunit_symtab (objfile, | |
995 | name); | |
996 | ||
997 | /* Build the subfile for NAME (the main source file) so that we can record | |
998 | a pointer to it for later. | |
999 | IMPORTANT: Do not allocate a struct symtab for NAME here. | |
1000 | It can happen that the debug info provides a different path to NAME than | |
1001 | DIRNAME,NAME. We cope with this in watch_main_source_file_lossage but | |
1002 | that only works if the main_subfile doesn't have a symtab yet. */ | |
4d663531 | 1003 | start_subfile (name); |
7bab9b58 DE |
1004 | /* Save this so that we don't have to go looking for it at the end |
1005 | of the subfiles list. */ | |
3c65e5b3 | 1006 | buildsym_compunit->main_subfile = buildsym_compunit->m_current_subfile; |
43f3e411 | 1007 | |
43f3e411 | 1008 | return buildsym_compunit->compunit_symtab; |
6d30eef8 DE |
1009 | } |
1010 | ||
1011 | /* Restart compilation for a symtab. | |
0ab9ce85 DE |
1012 | CUST is the result of end_expandable_symtab. |
1013 | NAME, START_ADDR are the source file we are resuming with. | |
1014 | ||
6d30eef8 | 1015 | This is used when a symtab is built from multiple sources. |
0ab9ce85 DE |
1016 | The symtab is first built with start_symtab/end_expandable_symtab |
1017 | and then for each additional piece call restart_symtab/augment_*_symtab. | |
1018 | Note: At the moment there is only augment_type_symtab. */ | |
6d30eef8 DE |
1019 | |
1020 | void | |
0ab9ce85 DE |
1021 | restart_symtab (struct compunit_symtab *cust, |
1022 | const char *name, CORE_ADDR start_addr) | |
6d30eef8 | 1023 | { |
b37dd3bc TT |
1024 | /* These should have been reset either by successful completion of building |
1025 | a symtab, or by the scoped_free_pendings destructor. */ | |
1026 | gdb_assert (buildsym_compunit == nullptr); | |
c906108c | 1027 | |
b248663f TT |
1028 | buildsym_compunit |
1029 | = new struct buildsym_compunit (COMPUNIT_OBJFILE (cust), | |
c0015d44 | 1030 | name, |
b248663f | 1031 | COMPUNIT_DIRNAME (cust), |
2c99ee5c TT |
1032 | compunit_language (cust), |
1033 | start_addr); | |
0ab9ce85 | 1034 | buildsym_compunit->compunit_symtab = cust; |
c906108c SS |
1035 | } |
1036 | ||
4a64f543 MS |
1037 | /* Subroutine of end_symtab to simplify it. Look for a subfile that |
1038 | matches the main source file's basename. If there is only one, and | |
1039 | if the main source file doesn't have any symbol or line number | |
1040 | information, then copy this file's symtab and line_vector to the | |
1041 | main source file's subfile and discard the other subfile. This can | |
1042 | happen because of a compiler bug or from the user playing games | |
1043 | with #line or from things like a distributed build system that | |
43f3e411 DE |
1044 | manipulates the debug info. This can also happen from an innocent |
1045 | symlink in the paths, we don't canonicalize paths here. */ | |
4584e32e DE |
1046 | |
1047 | static void | |
1048 | watch_main_source_file_lossage (void) | |
1049 | { | |
43f3e411 | 1050 | struct subfile *mainsub, *subfile; |
4584e32e | 1051 | |
43f3e411 | 1052 | /* We have to watch for buildsym_compunit == NULL here. It's a quirk of |
7bab9b58 | 1053 | end_symtab, it can return NULL so there may not be a main subfile. */ |
43f3e411 | 1054 | if (buildsym_compunit == NULL) |
7bab9b58 | 1055 | return; |
4584e32e | 1056 | |
43f3e411 DE |
1057 | /* Get the main source file. */ |
1058 | mainsub = buildsym_compunit->main_subfile; | |
1059 | ||
4a64f543 | 1060 | /* If the main source file doesn't have any line number or symbol |
7bab9b58 | 1061 | info, look for an alias in another subfile. */ |
4584e32e | 1062 | |
43f3e411 DE |
1063 | if (mainsub->line_vector == NULL |
1064 | && mainsub->symtab == NULL) | |
4584e32e | 1065 | { |
43f3e411 | 1066 | const char *mainbase = lbasename (mainsub->name); |
4584e32e DE |
1067 | int nr_matches = 0; |
1068 | struct subfile *prevsub; | |
1069 | struct subfile *mainsub_alias = NULL; | |
1070 | struct subfile *prev_mainsub_alias = NULL; | |
1071 | ||
1072 | prevsub = NULL; | |
43f3e411 DE |
1073 | for (subfile = buildsym_compunit->subfiles; |
1074 | subfile != NULL; | |
4584e32e DE |
1075 | subfile = subfile->next) |
1076 | { | |
43f3e411 DE |
1077 | if (subfile == mainsub) |
1078 | continue; | |
0ba1096a | 1079 | if (filename_cmp (lbasename (subfile->name), mainbase) == 0) |
4584e32e DE |
1080 | { |
1081 | ++nr_matches; | |
1082 | mainsub_alias = subfile; | |
1083 | prev_mainsub_alias = prevsub; | |
1084 | } | |
1085 | prevsub = subfile; | |
1086 | } | |
1087 | ||
1088 | if (nr_matches == 1) | |
1089 | { | |
43f3e411 | 1090 | gdb_assert (mainsub_alias != NULL && mainsub_alias != mainsub); |
4584e32e DE |
1091 | |
1092 | /* Found a match for the main source file. | |
1093 | Copy its line_vector and symtab to the main subfile | |
1094 | and then discard it. */ | |
1095 | ||
43f3e411 DE |
1096 | mainsub->line_vector = mainsub_alias->line_vector; |
1097 | mainsub->line_vector_length = mainsub_alias->line_vector_length; | |
1098 | mainsub->symtab = mainsub_alias->symtab; | |
4584e32e DE |
1099 | |
1100 | if (prev_mainsub_alias == NULL) | |
43f3e411 | 1101 | buildsym_compunit->subfiles = mainsub_alias->next; |
4584e32e DE |
1102 | else |
1103 | prev_mainsub_alias->next = mainsub_alias->next; | |
98387a29 | 1104 | xfree (mainsub_alias->name); |
4584e32e DE |
1105 | xfree (mainsub_alias); |
1106 | } | |
1107 | } | |
1108 | } | |
1109 | ||
b37dd3bc | 1110 | /* Reset state after a successful building of a symtab. */ |
6d30eef8 DE |
1111 | |
1112 | static void | |
1113 | reset_symtab_globals (void) | |
1114 | { | |
0ab9ce85 | 1115 | free_buildsym_compunit (); |
6d30eef8 DE |
1116 | } |
1117 | ||
4359dff1 JK |
1118 | /* Implementation of the first part of end_symtab. It allows modifying |
1119 | STATIC_BLOCK before it gets finalized by end_symtab_from_static_block. | |
1120 | If the returned value is NULL there is no blockvector created for | |
1121 | this symtab (you still must call end_symtab_from_static_block). | |
c906108c | 1122 | |
4359dff1 JK |
1123 | END_ADDR is the same as for end_symtab: the address of the end of the |
1124 | file's text. | |
c906108c | 1125 | |
4359dff1 | 1126 | If EXPANDABLE is non-zero the STATIC_BLOCK dictionary is made |
36586728 TT |
1127 | expandable. |
1128 | ||
1129 | If REQUIRED is non-zero, then a symtab is created even if it does | |
1130 | not contain any symbols. */ | |
6d30eef8 | 1131 | |
4359dff1 | 1132 | struct block * |
4d663531 | 1133 | end_symtab_get_static_block (CORE_ADDR end_addr, int expandable, int required) |
c906108c | 1134 | { |
43f3e411 | 1135 | struct objfile *objfile = buildsym_compunit->objfile; |
4d663531 | 1136 | |
c906108c SS |
1137 | /* Finish the lexical context of the last function in the file; pop |
1138 | the context stack. */ | |
1139 | ||
a60f3166 | 1140 | if (!buildsym_compunit->m_context_stack.empty ()) |
c906108c | 1141 | { |
a60f3166 | 1142 | struct context_stack cstk = pop_context (); |
4359dff1 | 1143 | |
c906108c | 1144 | /* Make a block for the local symbols within. */ |
c233e9c6 | 1145 | finish_block (cstk.name, cstk.old_blocks, NULL, |
a60f3166 | 1146 | cstk.start_addr, end_addr); |
c906108c | 1147 | |
a60f3166 | 1148 | if (!buildsym_compunit->m_context_stack.empty ()) |
c906108c SS |
1149 | { |
1150 | /* This is said to happen with SCO. The old coffread.c | |
1151 | code simply emptied the context stack, so we do the | |
1152 | same. FIXME: Find out why it is happening. This is not | |
1153 | believed to happen in most cases (even for coffread.c); | |
1154 | it used to be an abort(). */ | |
b98664d3 | 1155 | complaint (_("Context stack not empty in end_symtab")); |
a60f3166 | 1156 | buildsym_compunit->m_context_stack.clear (); |
c906108c SS |
1157 | } |
1158 | } | |
1159 | ||
1160 | /* Reordered executables may have out of order pending blocks; if | |
1161 | OBJF_REORDERED is true, then sort the pending blocks. */ | |
6d30eef8 | 1162 | |
5ac04550 | 1163 | if ((objfile->flags & OBJF_REORDERED) && buildsym_compunit->m_pending_blocks) |
c906108c | 1164 | { |
07e7f39f | 1165 | struct pending_block *pb; |
c906108c | 1166 | |
b05628f0 | 1167 | std::vector<block *> barray; |
c906108c | 1168 | |
5ac04550 | 1169 | for (pb = buildsym_compunit->m_pending_blocks; pb != NULL; pb = pb->next) |
b05628f0 | 1170 | barray.push_back (pb->block); |
07e7f39f | 1171 | |
5033013f UW |
1172 | /* Sort blocks by start address in descending order. Blocks with the |
1173 | same start address must remain in the original order to preserve | |
1174 | inline function caller/callee relationships. */ | |
1175 | std::stable_sort (barray.begin (), barray.end (), | |
1176 | [] (const block *a, const block *b) | |
1177 | { | |
1178 | return BLOCK_START (a) > BLOCK_START (b); | |
1179 | }); | |
07e7f39f | 1180 | |
b05628f0 | 1181 | int i = 0; |
5ac04550 | 1182 | for (pb = buildsym_compunit->m_pending_blocks; pb != NULL; pb = pb->next) |
b05628f0 | 1183 | pb->block = barray[i++]; |
c906108c SS |
1184 | } |
1185 | ||
1186 | /* Cleanup any undefined types that have been left hanging around | |
1187 | (this needs to be done before the finish_blocks so that | |
1188 | file_symbols is still good). | |
c5aa993b | 1189 | |
0a0edcd5 | 1190 | Both cleanup_undefined_stabs_types and finish_global_stabs are stabs |
c906108c SS |
1191 | specific, but harmless for other symbol readers, since on gdb |
1192 | startup or when finished reading stabs, the state is set so these | |
1193 | are no-ops. FIXME: Is this handled right in case of QUIT? Can | |
1194 | we make this cleaner? */ | |
1195 | ||
0a0edcd5 | 1196 | cleanup_undefined_stabs_types (objfile); |
c906108c SS |
1197 | finish_global_stabs (objfile); |
1198 | ||
36586728 | 1199 | if (!required |
5ac04550 | 1200 | && buildsym_compunit->m_pending_blocks == NULL |
e148f09d TT |
1201 | && buildsym_compunit->m_file_symbols == NULL |
1202 | && buildsym_compunit->m_global_symbols == NULL | |
530fedbc | 1203 | && !buildsym_compunit->m_have_line_numbers |
6a976300 | 1204 | && buildsym_compunit->m_pending_macros == NULL |
6cccc9a8 | 1205 | && buildsym_compunit->m_global_using_directives == NULL) |
c906108c | 1206 | { |
4359dff1 JK |
1207 | /* Ignore symtabs that have no functions with real debugging info. */ |
1208 | return NULL; | |
1209 | } | |
1210 | else | |
1211 | { | |
1212 | /* Define the STATIC_BLOCK. */ | |
e148f09d | 1213 | return finish_block_internal (NULL, get_file_symbols (), NULL, NULL, |
2c99ee5c TT |
1214 | buildsym_compunit->m_last_source_start_addr, |
1215 | end_addr, 0, expandable); | |
4359dff1 JK |
1216 | } |
1217 | } | |
1218 | ||
7bab9b58 DE |
1219 | /* Subroutine of end_symtab_from_static_block to simplify it. |
1220 | Handle the "have blockvector" case. | |
1221 | See end_symtab_from_static_block for a description of the arguments. */ | |
1222 | ||
43f3e411 | 1223 | static struct compunit_symtab * |
7bab9b58 | 1224 | end_symtab_with_blockvector (struct block *static_block, |
4d663531 | 1225 | int section, int expandable) |
4359dff1 | 1226 | { |
43f3e411 DE |
1227 | struct objfile *objfile = buildsym_compunit->objfile; |
1228 | struct compunit_symtab *cu = buildsym_compunit->compunit_symtab; | |
7bab9b58 | 1229 | struct symtab *symtab; |
4359dff1 JK |
1230 | struct blockvector *blockvector; |
1231 | struct subfile *subfile; | |
7bab9b58 | 1232 | CORE_ADDR end_addr; |
4359dff1 | 1233 | |
7bab9b58 | 1234 | gdb_assert (static_block != NULL); |
43f3e411 DE |
1235 | gdb_assert (buildsym_compunit != NULL); |
1236 | gdb_assert (buildsym_compunit->subfiles != NULL); | |
7bab9b58 DE |
1237 | |
1238 | end_addr = BLOCK_END (static_block); | |
1239 | ||
1240 | /* Create the GLOBAL_BLOCK and build the blockvector. */ | |
e148f09d | 1241 | finish_block_internal (NULL, get_global_symbols (), NULL, NULL, |
2c99ee5c | 1242 | buildsym_compunit->m_last_source_start_addr, end_addr, |
7bab9b58 | 1243 | 1, expandable); |
43f3e411 | 1244 | blockvector = make_blockvector (); |
c906108c | 1245 | |
f56ce883 DE |
1246 | /* Read the line table if it has to be read separately. |
1247 | This is only used by xcoffread.c. */ | |
c295b2e5 | 1248 | if (objfile->sf->sym_read_linetable != NULL) |
f56ce883 | 1249 | objfile->sf->sym_read_linetable (objfile); |
c906108c | 1250 | |
4584e32e DE |
1251 | /* Handle the case where the debug info specifies a different path |
1252 | for the main source file. It can cause us to lose track of its | |
1253 | line number information. */ | |
1254 | watch_main_source_file_lossage (); | |
1255 | ||
43f3e411 DE |
1256 | /* Now create the symtab objects proper, if not already done, |
1257 | one for each subfile. */ | |
c906108c | 1258 | |
43f3e411 DE |
1259 | for (subfile = buildsym_compunit->subfiles; |
1260 | subfile != NULL; | |
1261 | subfile = subfile->next) | |
c906108c SS |
1262 | { |
1263 | int linetablesize = 0; | |
c906108c | 1264 | |
7bab9b58 | 1265 | if (subfile->line_vector) |
c906108c | 1266 | { |
7bab9b58 DE |
1267 | linetablesize = sizeof (struct linetable) + |
1268 | subfile->line_vector->nitems * sizeof (struct linetable_entry); | |
1269 | ||
1270 | /* Like the pending blocks, the line table may be | |
1271 | scrambled in reordered executables. Sort it if | |
1272 | OBJF_REORDERED is true. */ | |
1273 | if (objfile->flags & OBJF_REORDERED) | |
1274 | qsort (subfile->line_vector->item, | |
1275 | subfile->line_vector->nitems, | |
1276 | sizeof (struct linetable_entry), compare_line_numbers); | |
1277 | } | |
9182c5bc | 1278 | |
7bab9b58 DE |
1279 | /* Allocate a symbol table if necessary. */ |
1280 | if (subfile->symtab == NULL) | |
43f3e411 | 1281 | subfile->symtab = allocate_symtab (cu, subfile->name); |
7bab9b58 | 1282 | symtab = subfile->symtab; |
9182c5bc | 1283 | |
7bab9b58 | 1284 | /* Fill in its components. */ |
43f3e411 | 1285 | |
7bab9b58 DE |
1286 | if (subfile->line_vector) |
1287 | { | |
1288 | /* Reallocate the line table on the symbol obstack. */ | |
8435453b | 1289 | SYMTAB_LINETABLE (symtab) = (struct linetable *) |
7bab9b58 | 1290 | obstack_alloc (&objfile->objfile_obstack, linetablesize); |
8435453b DE |
1291 | memcpy (SYMTAB_LINETABLE (symtab), subfile->line_vector, |
1292 | linetablesize); | |
c906108c | 1293 | } |
24be086d | 1294 | else |
c906108c | 1295 | { |
8435453b | 1296 | SYMTAB_LINETABLE (symtab) = NULL; |
c906108c | 1297 | } |
c906108c | 1298 | |
7bab9b58 DE |
1299 | /* Use whatever language we have been using for this |
1300 | subfile, not the one that was deduced in allocate_symtab | |
1301 | from the filename. We already did our own deducing when | |
1302 | we created the subfile, and we may have altered our | |
1303 | opinion of what language it is from things we found in | |
1304 | the symbols. */ | |
1305 | symtab->language = subfile->language; | |
43f3e411 | 1306 | } |
c906108c | 1307 | |
43f3e411 DE |
1308 | /* Make sure the symtab of main_subfile is the first in its list. */ |
1309 | { | |
1310 | struct symtab *main_symtab, *prev_symtab; | |
1311 | ||
1312 | main_symtab = buildsym_compunit->main_subfile->symtab; | |
1313 | prev_symtab = NULL; | |
1314 | ALL_COMPUNIT_FILETABS (cu, symtab) | |
1315 | { | |
1316 | if (symtab == main_symtab) | |
1317 | { | |
1318 | if (prev_symtab != NULL) | |
1319 | { | |
1320 | prev_symtab->next = main_symtab->next; | |
1321 | main_symtab->next = COMPUNIT_FILETABS (cu); | |
1322 | COMPUNIT_FILETABS (cu) = main_symtab; | |
1323 | } | |
1324 | break; | |
1325 | } | |
1326 | prev_symtab = symtab; | |
1327 | } | |
1328 | gdb_assert (main_symtab == COMPUNIT_FILETABS (cu)); | |
1329 | } | |
84a146c9 | 1330 | |
0ab9ce85 | 1331 | /* Fill out the compunit symtab. */ |
84a146c9 | 1332 | |
43f3e411 DE |
1333 | if (buildsym_compunit->comp_dir != NULL) |
1334 | { | |
1335 | /* Reallocate the dirname on the symbol obstack. */ | |
905eb0e2 | 1336 | const char *comp_dir = buildsym_compunit->comp_dir.get (); |
43f3e411 | 1337 | COMPUNIT_DIRNAME (cu) |
224c3ddb | 1338 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, |
905eb0e2 | 1339 | comp_dir, strlen (comp_dir)); |
c906108c SS |
1340 | } |
1341 | ||
43f3e411 DE |
1342 | /* Save the debug format string (if any) in the symtab. */ |
1343 | COMPUNIT_DEBUGFORMAT (cu) = buildsym_compunit->debugformat; | |
1344 | ||
1345 | /* Similarly for the producer. */ | |
1346 | COMPUNIT_PRODUCER (cu) = buildsym_compunit->producer; | |
1347 | ||
1348 | COMPUNIT_BLOCKVECTOR (cu) = blockvector; | |
7bab9b58 | 1349 | { |
43f3e411 | 1350 | struct block *b = BLOCKVECTOR_BLOCK (blockvector, GLOBAL_BLOCK); |
cb1df416 | 1351 | |
43f3e411 | 1352 | set_block_compunit_symtab (b, cu); |
7bab9b58 | 1353 | } |
cb1df416 | 1354 | |
43f3e411 DE |
1355 | COMPUNIT_BLOCK_LINE_SECTION (cu) = section; |
1356 | ||
6a976300 | 1357 | COMPUNIT_MACRO_TABLE (cu) = buildsym_compunit->release_macros (); |
43f3e411 | 1358 | |
7bab9b58 DE |
1359 | /* Default any symbols without a specified symtab to the primary symtab. */ |
1360 | { | |
1361 | int block_i; | |
1362 | ||
43f3e411 DE |
1363 | /* The main source file's symtab. */ |
1364 | symtab = COMPUNIT_FILETABS (cu); | |
1365 | ||
7bab9b58 DE |
1366 | for (block_i = 0; block_i < BLOCKVECTOR_NBLOCKS (blockvector); block_i++) |
1367 | { | |
1368 | struct block *block = BLOCKVECTOR_BLOCK (blockvector, block_i); | |
1369 | struct symbol *sym; | |
1370 | struct dict_iterator iter; | |
1371 | ||
1372 | /* Inlined functions may have symbols not in the global or | |
1373 | static symbol lists. */ | |
1374 | if (BLOCK_FUNCTION (block) != NULL) | |
08be3fe3 DE |
1375 | if (symbol_symtab (BLOCK_FUNCTION (block)) == NULL) |
1376 | symbol_set_symtab (BLOCK_FUNCTION (block), symtab); | |
7bab9b58 DE |
1377 | |
1378 | /* Note that we only want to fix up symbols from the local | |
1379 | blocks, not blocks coming from included symtabs. That is why | |
1380 | we use ALL_DICT_SYMBOLS here and not ALL_BLOCK_SYMBOLS. */ | |
1381 | ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym) | |
08be3fe3 DE |
1382 | if (symbol_symtab (sym) == NULL) |
1383 | symbol_set_symtab (sym, symtab); | |
7bab9b58 DE |
1384 | } |
1385 | } | |
edb3359d | 1386 | |
43f3e411 | 1387 | add_compunit_symtab_to_objfile (cu); |
43f3e411 DE |
1388 | |
1389 | return cu; | |
7bab9b58 DE |
1390 | } |
1391 | ||
1392 | /* Implementation of the second part of end_symtab. Pass STATIC_BLOCK | |
1393 | as value returned by end_symtab_get_static_block. | |
1394 | ||
1395 | SECTION is the same as for end_symtab: the section number | |
1396 | (in objfile->section_offsets) of the blockvector and linetable. | |
1397 | ||
1398 | If EXPANDABLE is non-zero the GLOBAL_BLOCK dictionary is made | |
1399 | expandable. */ | |
1400 | ||
43f3e411 | 1401 | struct compunit_symtab * |
7bab9b58 | 1402 | end_symtab_from_static_block (struct block *static_block, |
4d663531 | 1403 | int section, int expandable) |
7bab9b58 | 1404 | { |
43f3e411 | 1405 | struct compunit_symtab *cu; |
7bab9b58 DE |
1406 | |
1407 | if (static_block == NULL) | |
1408 | { | |
0ab9ce85 DE |
1409 | /* Handle the "no blockvector" case. |
1410 | When this happens there is nothing to record, so there's nothing | |
1411 | to do: memory will be freed up later. | |
1412 | ||
1413 | Note: We won't be adding a compunit to the objfile's list of | |
1414 | compunits, so there's nothing to unchain. However, since each symtab | |
1415 | is added to the objfile's obstack we can't free that space. | |
1416 | We could do better, but this is believed to be a sufficiently rare | |
1417 | event. */ | |
43f3e411 | 1418 | cu = NULL; |
7bab9b58 DE |
1419 | } |
1420 | else | |
43f3e411 | 1421 | cu = end_symtab_with_blockvector (static_block, section, expandable); |
cb1df416 | 1422 | |
6d30eef8 DE |
1423 | reset_symtab_globals (); |
1424 | ||
43f3e411 | 1425 | return cu; |
6d30eef8 DE |
1426 | } |
1427 | ||
4359dff1 JK |
1428 | /* Finish the symbol definitions for one main source file, close off |
1429 | all the lexical contexts for that file (creating struct block's for | |
1430 | them), then make the struct symtab for that file and put it in the | |
1431 | list of all such. | |
1432 | ||
1433 | END_ADDR is the address of the end of the file's text. SECTION is | |
1434 | the section number (in objfile->section_offsets) of the blockvector | |
1435 | and linetable. | |
1436 | ||
1437 | Note that it is possible for end_symtab() to return NULL. In | |
1438 | particular, for the DWARF case at least, it will return NULL when | |
1439 | it finds a compilation unit that has exactly one DIE, a | |
1440 | TAG_compile_unit DIE. This can happen when we link in an object | |
1441 | file that was compiled from an empty source file. Returning NULL | |
1442 | is probably not the correct thing to do, because then gdb will | |
1443 | never know about this empty file (FIXME). | |
1444 | ||
1445 | If you need to modify STATIC_BLOCK before it is finalized you should | |
1446 | call end_symtab_get_static_block and end_symtab_from_static_block | |
1447 | yourself. */ | |
6d30eef8 | 1448 | |
43f3e411 | 1449 | struct compunit_symtab * |
4d663531 | 1450 | end_symtab (CORE_ADDR end_addr, int section) |
6d30eef8 | 1451 | { |
4359dff1 JK |
1452 | struct block *static_block; |
1453 | ||
4d663531 DE |
1454 | static_block = end_symtab_get_static_block (end_addr, 0, 0); |
1455 | return end_symtab_from_static_block (static_block, section, 0); | |
6d30eef8 DE |
1456 | } |
1457 | ||
4359dff1 | 1458 | /* Same as end_symtab except create a symtab that can be later added to. */ |
6d30eef8 | 1459 | |
43f3e411 | 1460 | struct compunit_symtab * |
4d663531 | 1461 | end_expandable_symtab (CORE_ADDR end_addr, int section) |
6d30eef8 | 1462 | { |
4359dff1 JK |
1463 | struct block *static_block; |
1464 | ||
4d663531 DE |
1465 | static_block = end_symtab_get_static_block (end_addr, 1, 0); |
1466 | return end_symtab_from_static_block (static_block, section, 1); | |
6d30eef8 DE |
1467 | } |
1468 | ||
1469 | /* Subroutine of augment_type_symtab to simplify it. | |
43f3e411 DE |
1470 | Attach the main source file's symtab to all symbols in PENDING_LIST that |
1471 | don't have one. */ | |
6d30eef8 DE |
1472 | |
1473 | static void | |
43f3e411 DE |
1474 | set_missing_symtab (struct pending *pending_list, |
1475 | struct compunit_symtab *cu) | |
6d30eef8 DE |
1476 | { |
1477 | struct pending *pending; | |
1478 | int i; | |
1479 | ||
1480 | for (pending = pending_list; pending != NULL; pending = pending->next) | |
801e3a5b | 1481 | { |
6d30eef8 DE |
1482 | for (i = 0; i < pending->nsyms; ++i) |
1483 | { | |
08be3fe3 DE |
1484 | if (symbol_symtab (pending->symbol[i]) == NULL) |
1485 | symbol_set_symtab (pending->symbol[i], COMPUNIT_FILETABS (cu)); | |
6d30eef8 | 1486 | } |
801e3a5b | 1487 | } |
6d30eef8 | 1488 | } |
c906108c | 1489 | |
6d30eef8 DE |
1490 | /* Same as end_symtab, but for the case where we're adding more symbols |
1491 | to an existing symtab that is known to contain only type information. | |
1492 | This is the case for DWARF4 Type Units. */ | |
1493 | ||
1494 | void | |
0ab9ce85 | 1495 | augment_type_symtab (void) |
6d30eef8 | 1496 | { |
0ab9ce85 | 1497 | struct compunit_symtab *cust = buildsym_compunit->compunit_symtab; |
43f3e411 | 1498 | const struct blockvector *blockvector = COMPUNIT_BLOCKVECTOR (cust); |
6d30eef8 | 1499 | |
a60f3166 TT |
1500 | if (!buildsym_compunit->m_context_stack.empty ()) |
1501 | complaint (_("Context stack not empty in augment_type_symtab")); | |
5ac04550 | 1502 | if (buildsym_compunit->m_pending_blocks != NULL) |
b98664d3 | 1503 | complaint (_("Blocks in a type symtab")); |
6a976300 | 1504 | if (buildsym_compunit->m_pending_macros != NULL) |
b98664d3 | 1505 | complaint (_("Macro in a type symtab")); |
530fedbc | 1506 | if (buildsym_compunit->m_have_line_numbers) |
b98664d3 | 1507 | complaint (_("Line numbers recorded in a type symtab")); |
6d30eef8 | 1508 | |
e148f09d | 1509 | if (buildsym_compunit->m_file_symbols != NULL) |
6d30eef8 DE |
1510 | { |
1511 | struct block *block = BLOCKVECTOR_BLOCK (blockvector, STATIC_BLOCK); | |
1512 | ||
1513 | /* First mark any symbols without a specified symtab as belonging | |
1514 | to the primary symtab. */ | |
e148f09d | 1515 | set_missing_symtab (buildsym_compunit->m_file_symbols, cust); |
6d30eef8 | 1516 | |
e148f09d | 1517 | dict_add_pending (BLOCK_DICT (block), buildsym_compunit->m_file_symbols); |
6d30eef8 DE |
1518 | } |
1519 | ||
e148f09d | 1520 | if (buildsym_compunit->m_global_symbols != NULL) |
6d30eef8 DE |
1521 | { |
1522 | struct block *block = BLOCKVECTOR_BLOCK (blockvector, GLOBAL_BLOCK); | |
1523 | ||
1524 | /* First mark any symbols without a specified symtab as belonging | |
1525 | to the primary symtab. */ | |
e148f09d | 1526 | set_missing_symtab (buildsym_compunit->m_global_symbols, cust); |
6d30eef8 | 1527 | |
e148f09d TT |
1528 | dict_add_pending (BLOCK_DICT (block), |
1529 | buildsym_compunit->m_global_symbols); | |
6d30eef8 DE |
1530 | } |
1531 | ||
1532 | reset_symtab_globals (); | |
c906108c SS |
1533 | } |
1534 | ||
1535 | /* Push a context block. Args are an identifying nesting level | |
1536 | (checkable when you pop it), and the starting PC address of this | |
1537 | context. */ | |
1538 | ||
1539 | struct context_stack * | |
1540 | push_context (int desc, CORE_ADDR valu) | |
1541 | { | |
a60f3166 | 1542 | gdb_assert (buildsym_compunit != nullptr); |
c906108c | 1543 | |
a60f3166 TT |
1544 | buildsym_compunit->m_context_stack.emplace_back (); |
1545 | struct context_stack *newobj = &buildsym_compunit->m_context_stack.back (); | |
c906108c | 1546 | |
fe978cb0 | 1547 | newobj->depth = desc; |
e148f09d | 1548 | newobj->locals = buildsym_compunit->m_local_symbols; |
5ac04550 | 1549 | newobj->old_blocks = buildsym_compunit->m_pending_blocks; |
fe978cb0 | 1550 | newobj->start_addr = valu; |
6cccc9a8 TT |
1551 | newobj->local_using_directives |
1552 | = buildsym_compunit->m_local_using_directives; | |
fe978cb0 | 1553 | newobj->name = NULL; |
c906108c | 1554 | |
e148f09d | 1555 | buildsym_compunit->m_local_symbols = NULL; |
6cccc9a8 | 1556 | buildsym_compunit->m_local_using_directives = NULL; |
c906108c | 1557 | |
fe978cb0 | 1558 | return newobj; |
c906108c | 1559 | } |
0c5e171a | 1560 | |
a672ef13 | 1561 | /* Pop a context block. Returns the address of the context block just |
4a64f543 | 1562 | popped. */ |
a672ef13 | 1563 | |
a60f3166 TT |
1564 | struct context_stack |
1565 | pop_context () | |
0c5e171a | 1566 | { |
a60f3166 TT |
1567 | gdb_assert (buildsym_compunit != nullptr); |
1568 | gdb_assert (!buildsym_compunit->m_context_stack.empty ()); | |
1569 | struct context_stack result = buildsym_compunit->m_context_stack.back (); | |
1570 | buildsym_compunit->m_context_stack.pop_back (); | |
1571 | return result; | |
0c5e171a KD |
1572 | } |
1573 | ||
c906108c | 1574 | \f |
357e46e7 | 1575 | |
c906108c | 1576 | void |
554d387d | 1577 | record_debugformat (const char *format) |
c906108c | 1578 | { |
43f3e411 | 1579 | buildsym_compunit->debugformat = format; |
c906108c SS |
1580 | } |
1581 | ||
303b6f5d DJ |
1582 | void |
1583 | record_producer (const char *producer) | |
1584 | { | |
43f3e411 | 1585 | buildsym_compunit->producer = producer; |
303b6f5d DJ |
1586 | } |
1587 | ||
c906108c | 1588 | \f |
46212e0b | 1589 | |
46212e0b TT |
1590 | /* See buildsym.h. */ |
1591 | ||
1592 | void | |
1593 | set_last_source_file (const char *name) | |
1594 | { | |
c0015d44 TT |
1595 | gdb_assert (buildsym_compunit != nullptr || name == nullptr); |
1596 | if (buildsym_compunit != nullptr) | |
1597 | buildsym_compunit->set_last_source_file (name); | |
46212e0b TT |
1598 | } |
1599 | ||
1600 | /* See buildsym.h. */ | |
1601 | ||
1602 | const char * | |
1603 | get_last_source_file (void) | |
1604 | { | |
c0015d44 TT |
1605 | if (buildsym_compunit == nullptr) |
1606 | return nullptr; | |
1607 | return buildsym_compunit->m_last_source_file.get (); | |
46212e0b TT |
1608 | } |
1609 | ||
2c99ee5c TT |
1610 | /* See buildsym.h. */ |
1611 | ||
1612 | void | |
1613 | set_last_source_start_addr (CORE_ADDR addr) | |
1614 | { | |
1615 | gdb_assert (buildsym_compunit != nullptr); | |
1616 | buildsym_compunit->m_last_source_start_addr = addr; | |
1617 | } | |
1618 | ||
1619 | /* See buildsym.h. */ | |
1620 | ||
1621 | CORE_ADDR | |
1622 | get_last_source_start_addr () | |
1623 | { | |
1624 | gdb_assert (buildsym_compunit != nullptr); | |
1625 | return buildsym_compunit->m_last_source_start_addr; | |
1626 | } | |
1627 | ||
6cccc9a8 TT |
1628 | /* See buildsym.h. */ |
1629 | ||
1630 | struct using_direct ** | |
1631 | get_local_using_directives () | |
1632 | { | |
1633 | gdb_assert (buildsym_compunit != nullptr); | |
1634 | return &buildsym_compunit->m_local_using_directives; | |
1635 | } | |
1636 | ||
1637 | /* See buildsym.h. */ | |
1638 | ||
1639 | void | |
1640 | set_local_using_directives (struct using_direct *new_local) | |
1641 | { | |
1642 | gdb_assert (buildsym_compunit != nullptr); | |
1643 | buildsym_compunit->m_local_using_directives = new_local; | |
1644 | } | |
1645 | ||
1646 | /* See buildsym.h. */ | |
1647 | ||
1648 | struct using_direct ** | |
1649 | get_global_using_directives () | |
1650 | { | |
1651 | gdb_assert (buildsym_compunit != nullptr); | |
1652 | return &buildsym_compunit->m_global_using_directives; | |
1653 | } | |
1654 | ||
a60f3166 TT |
1655 | /* See buildsym.h. */ |
1656 | ||
1657 | bool | |
1658 | outermost_context_p () | |
1659 | { | |
1660 | gdb_assert (buildsym_compunit != nullptr); | |
1661 | return buildsym_compunit->m_context_stack.empty (); | |
1662 | } | |
1663 | ||
1664 | /* See buildsym.h. */ | |
1665 | ||
1666 | struct context_stack * | |
1667 | get_current_context_stack () | |
1668 | { | |
1669 | gdb_assert (buildsym_compunit != nullptr); | |
1670 | if (buildsym_compunit->m_context_stack.empty ()) | |
1671 | return nullptr; | |
1672 | return &buildsym_compunit->m_context_stack.back (); | |
1673 | } | |
1674 | ||
1675 | /* See buildsym.h. */ | |
1676 | ||
1677 | int | |
1678 | get_context_stack_depth () | |
1679 | { | |
1680 | gdb_assert (buildsym_compunit != nullptr); | |
1681 | return buildsym_compunit->m_context_stack.size (); | |
1682 | } | |
1683 | ||
3c65e5b3 TT |
1684 | /* See buildsym.h. */ |
1685 | ||
1686 | struct subfile * | |
1687 | get_current_subfile () | |
1688 | { | |
1689 | gdb_assert (buildsym_compunit != nullptr); | |
1690 | return buildsym_compunit->m_current_subfile; | |
1691 | } | |
1692 | ||
e148f09d TT |
1693 | /* See buildsym.h. */ |
1694 | ||
1695 | struct pending ** | |
1696 | get_local_symbols () | |
1697 | { | |
1698 | gdb_assert (buildsym_compunit != nullptr); | |
1699 | return &buildsym_compunit->m_local_symbols; | |
1700 | } | |
1701 | ||
1702 | /* See buildsym.h. */ | |
1703 | ||
1704 | struct pending ** | |
1705 | get_file_symbols () | |
1706 | { | |
1707 | gdb_assert (buildsym_compunit != nullptr); | |
1708 | return &buildsym_compunit->m_file_symbols; | |
1709 | } | |
1710 | ||
1711 | /* See buildsym.h. */ | |
1712 | ||
1713 | struct pending ** | |
1714 | get_global_symbols () | |
1715 | { | |
1716 | gdb_assert (buildsym_compunit != nullptr); | |
1717 | return &buildsym_compunit->m_global_symbols; | |
1718 | } |