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... */ |
4a64f543 | 77 | #include "filenames.h" /* For DOSish file names. */ |
99d9066e | 78 | #include "macrotab.h" |
261397f8 | 79 | #include "demangle.h" /* Needed by SYMBOL_INIT_DEMANGLED_NAME. */ |
fe898f56 | 80 | #include "block.h" |
9219021c | 81 | #include "cp-support.h" |
de4f826b | 82 | #include "dictionary.h" |
801e3a5b | 83 | #include "addrmap.h" |
b05628f0 | 84 | #include <algorithm> |
9219021c | 85 | |
c906108c | 86 | /* Ask buildsym.h to define the vars it normally declares `extern'. */ |
c5aa993b JM |
87 | #define EXTERN |
88 | /**/ | |
4a64f543 | 89 | #include "buildsym.h" /* Our own declarations. */ |
c906108c SS |
90 | #undef EXTERN |
91 | ||
0a0edcd5 | 92 | /* For cleanup_undefined_stabs_types and finish_global_stabs (somewhat |
c906108c SS |
93 | questionable--see comment where we call them). */ |
94 | ||
95 | #include "stabsread.h" | |
96 | ||
43f3e411 DE |
97 | /* Buildsym's counterpart to struct compunit_symtab. |
98 | TODO(dje): Move all related global state into here. */ | |
4d663531 | 99 | |
43f3e411 DE |
100 | struct buildsym_compunit |
101 | { | |
b248663f TT |
102 | /* Start recording information about a primary source file (IOW, not an |
103 | included source file). | |
104 | COMP_DIR is the directory in which the compilation unit was compiled | |
105 | (or NULL if not known). */ | |
106 | ||
c0015d44 | 107 | buildsym_compunit (struct objfile *objfile_, const char *name, |
2c99ee5c TT |
108 | const char *comp_dir_, enum language language_, |
109 | CORE_ADDR last_addr) | |
b248663f | 110 | : objfile (objfile_), |
c0015d44 | 111 | m_last_source_file (name == nullptr ? nullptr : xstrdup (name)), |
b248663f | 112 | comp_dir (comp_dir_ == nullptr ? nullptr : xstrdup (comp_dir_)), |
2c99ee5c TT |
113 | language (language_), |
114 | m_last_source_start_addr (last_addr) | |
b248663f TT |
115 | { |
116 | } | |
117 | ||
118 | ~buildsym_compunit () | |
119 | { | |
120 | struct subfile *subfile, *nextsub; | |
121 | ||
6a976300 TT |
122 | if (m_pending_macros != nullptr) |
123 | free_macro_table (m_pending_macros); | |
124 | ||
b248663f TT |
125 | for (subfile = subfiles; |
126 | subfile != NULL; | |
127 | subfile = nextsub) | |
128 | { | |
129 | nextsub = subfile->next; | |
130 | xfree (subfile->name); | |
131 | xfree (subfile->line_vector); | |
132 | xfree (subfile); | |
133 | } | |
b248663f TT |
134 | } |
135 | ||
c0015d44 TT |
136 | void set_last_source_file (const char *name) |
137 | { | |
138 | char *new_name = name == NULL ? NULL : xstrdup (name); | |
139 | m_last_source_file.reset (new_name); | |
140 | } | |
141 | ||
6a976300 TT |
142 | struct macro_table *get_macro_table () |
143 | { | |
144 | if (m_pending_macros == nullptr) | |
145 | m_pending_macros = new_macro_table (&objfile->per_bfd->storage_obstack, | |
146 | objfile->per_bfd->macro_cache, | |
147 | compunit_symtab); | |
148 | return m_pending_macros; | |
149 | } | |
150 | ||
151 | struct macro_table *release_macros () | |
152 | { | |
153 | struct macro_table *result = m_pending_macros; | |
154 | m_pending_macros = nullptr; | |
155 | return result; | |
156 | } | |
157 | ||
43f3e411 DE |
158 | /* The objfile we're reading debug info from. */ |
159 | struct objfile *objfile; | |
160 | ||
161 | /* List of subfiles (source files). | |
162 | Files are added to the front of the list. | |
163 | This is important mostly for the language determination hacks we use, | |
164 | which iterate over previously added files. */ | |
b248663f | 165 | struct subfile *subfiles = nullptr; |
43f3e411 DE |
166 | |
167 | /* The subfile of the main source file. */ | |
b248663f | 168 | struct subfile *main_subfile = nullptr; |
4d663531 | 169 | |
c0015d44 TT |
170 | /* Name of source file whose symbol data we are now processing. This |
171 | comes from a symbol of type N_SO for stabs. For DWARF it comes | |
172 | from the DW_AT_name attribute of a DW_TAG_compile_unit DIE. */ | |
173 | gdb::unique_xmalloc_ptr<char> m_last_source_file; | |
174 | ||
43f3e411 | 175 | /* E.g., DW_AT_comp_dir if DWARF. Space for this is malloc'd. */ |
905eb0e2 | 176 | gdb::unique_xmalloc_ptr<char> comp_dir; |
4d663531 | 177 | |
43f3e411 DE |
178 | /* Space for this is not malloc'd, and is assumed to have at least |
179 | the same lifetime as objfile. */ | |
b248663f | 180 | const char *producer = nullptr; |
4d663531 | 181 | |
43f3e411 DE |
182 | /* Space for this is not malloc'd, and is assumed to have at least |
183 | the same lifetime as objfile. */ | |
b248663f | 184 | const char *debugformat = nullptr; |
94d09e04 | 185 | |
43f3e411 | 186 | /* The compunit we are building. */ |
b248663f | 187 | struct compunit_symtab *compunit_symtab = nullptr; |
5ffa0793 PA |
188 | |
189 | /* Language of this compunit_symtab. */ | |
190 | enum language language; | |
6a976300 TT |
191 | |
192 | /* The macro table for the compilation unit whose symbols we're | |
193 | currently reading. */ | |
194 | struct macro_table *m_pending_macros = nullptr; | |
530fedbc TT |
195 | |
196 | /* True if symtab has line number info. This prevents an otherwise | |
197 | empty symtab from being tossed. */ | |
198 | bool m_have_line_numbers = false; | |
2c99ee5c TT |
199 | |
200 | /* Core address of start of text of current source file. This too | |
201 | comes from the N_SO symbol. For Dwarf it typically comes from the | |
202 | DW_AT_low_pc attribute of a DW_TAG_compile_unit DIE. */ | |
203 | CORE_ADDR m_last_source_start_addr; | |
8419ee53 TT |
204 | |
205 | /* Stack of subfile names. */ | |
206 | std::vector<const char *> m_subfile_stack; | |
6cccc9a8 TT |
207 | |
208 | /* The "using" directives local to lexical context. */ | |
209 | struct using_direct *m_local_using_directives = nullptr; | |
210 | ||
211 | /* Global "using" directives. */ | |
212 | struct using_direct *m_global_using_directives = nullptr; | |
a60f3166 TT |
213 | |
214 | /* The stack of contexts that are pushed by push_context and popped | |
215 | by pop_context. */ | |
216 | std::vector<struct context_stack> m_context_stack; | |
43f3e411 | 217 | }; |
94d09e04 | 218 | |
43f3e411 DE |
219 | /* The work-in-progress of the compunit we are building. |
220 | This is created first, before any subfiles by start_symtab. */ | |
7bab9b58 | 221 | |
43f3e411 | 222 | static struct buildsym_compunit *buildsym_compunit; |
7bab9b58 | 223 | |
c906108c SS |
224 | /* List of free `struct pending' structures for reuse. */ |
225 | ||
226 | static struct pending *free_pendings; | |
227 | ||
801e3a5b JB |
228 | /* The mutable address map for the compilation unit whose symbols |
229 | we're currently reading. The symtabs' shared blockvector will | |
230 | point to a fixed copy of this. */ | |
231 | static struct addrmap *pending_addrmap; | |
232 | ||
233 | /* The obstack on which we allocate pending_addrmap. | |
234 | If pending_addrmap is NULL, this is uninitialized; otherwise, it is | |
235 | initialized (and holds pending_addrmap). */ | |
236 | static struct obstack pending_addrmap_obstack; | |
237 | ||
238 | /* Non-zero if we recorded any ranges in the addrmap that are | |
239 | different from those in the blockvector already. We set this to | |
240 | zero when we start processing a symfile, and if it's still zero at | |
241 | the end, then we just toss the addrmap. */ | |
242 | static int pending_addrmap_interesting; | |
243 | ||
93eed41f TT |
244 | /* An obstack used for allocating pending blocks. */ |
245 | ||
246 | static struct obstack pending_block_obstack; | |
247 | ||
248 | /* List of blocks already made (lexical contexts already closed). | |
249 | This is used at the end to make the blockvector. */ | |
250 | ||
251 | struct pending_block | |
252 | { | |
253 | struct pending_block *next; | |
254 | struct block *block; | |
255 | }; | |
256 | ||
257 | /* Pointer to the head of a linked list of symbol blocks which have | |
258 | already been finalized (lexical contexts already closed) and which | |
259 | are just waiting to be built into a blockvector when finalizing the | |
260 | associated symtab. */ | |
261 | ||
262 | static struct pending_block *pending_blocks; | |
fc474241 | 263 | |
0ab9ce85 DE |
264 | static void free_buildsym_compunit (void); |
265 | ||
c906108c | 266 | static int compare_line_numbers (const void *ln1p, const void *ln2p); |
0b49e518 TT |
267 | |
268 | static void record_pending_block (struct objfile *objfile, | |
269 | struct block *block, | |
270 | struct pending_block *opblock); | |
c906108c | 271 | |
652788a7 TT |
272 | static void free_pending_blocks (); |
273 | ||
c906108c SS |
274 | /* Initial sizes of data structures. These are realloc'd larger if |
275 | needed, and realloc'd down to the size actually used, when | |
276 | completed. */ | |
277 | ||
c906108c SS |
278 | #define INITIAL_LINE_VECTOR_LENGTH 1000 |
279 | \f | |
280 | ||
4a64f543 | 281 | /* Maintain the lists of symbols and blocks. */ |
c906108c | 282 | |
93bf33fd | 283 | /* Add a symbol to one of the lists of symbols. */ |
c906108c SS |
284 | |
285 | void | |
286 | add_symbol_to_list (struct symbol *symbol, struct pending **listhead) | |
287 | { | |
52f0bd74 | 288 | struct pending *link; |
c906108c SS |
289 | |
290 | /* If this is an alias for another symbol, don't add it. */ | |
291 | if (symbol->ginfo.name && symbol->ginfo.name[0] == '#') | |
292 | return; | |
293 | ||
4a64f543 | 294 | /* We keep PENDINGSIZE symbols in each link of the list. If we |
c906108c SS |
295 | don't have a link with room in it, add a new link. */ |
296 | if (*listhead == NULL || (*listhead)->nsyms == PENDINGSIZE) | |
297 | { | |
298 | if (free_pendings) | |
299 | { | |
300 | link = free_pendings; | |
301 | free_pendings = link->next; | |
302 | } | |
303 | else | |
304 | { | |
8d749320 | 305 | link = XNEW (struct pending); |
c906108c SS |
306 | } |
307 | ||
308 | link->next = *listhead; | |
309 | *listhead = link; | |
310 | link->nsyms = 0; | |
311 | } | |
312 | ||
313 | (*listhead)->symbol[(*listhead)->nsyms++] = symbol; | |
314 | } | |
315 | ||
316 | /* Find a symbol named NAME on a LIST. NAME need not be | |
317 | '\0'-terminated; LENGTH is the length of the name. */ | |
318 | ||
319 | struct symbol * | |
320 | find_symbol_in_list (struct pending *list, char *name, int length) | |
321 | { | |
322 | int j; | |
0d5cff50 | 323 | const char *pp; |
c906108c SS |
324 | |
325 | while (list != NULL) | |
326 | { | |
327 | for (j = list->nsyms; --j >= 0;) | |
328 | { | |
3567439c | 329 | pp = SYMBOL_LINKAGE_NAME (list->symbol[j]); |
5aafa1cc PM |
330 | if (*pp == *name && strncmp (pp, name, length) == 0 |
331 | && pp[length] == '\0') | |
c906108c SS |
332 | { |
333 | return (list->symbol[j]); | |
334 | } | |
335 | } | |
336 | list = list->next; | |
337 | } | |
338 | return (NULL); | |
339 | } | |
340 | ||
652788a7 TT |
341 | scoped_free_pendings::scoped_free_pendings () |
342 | { | |
343 | gdb_assert (pending_blocks == nullptr); | |
344 | } | |
345 | ||
33c7c59d TT |
346 | /* At end of reading syms, or in case of quit, ensure everything |
347 | associated with building symtabs is freed. | |
0ab9ce85 DE |
348 | |
349 | N.B. This is *not* intended to be used when building psymtabs. Some debug | |
350 | info readers call this anyway, which is harmless if confusing. */ | |
c906108c | 351 | |
33c7c59d | 352 | scoped_free_pendings::~scoped_free_pendings () |
c906108c SS |
353 | { |
354 | struct pending *next, *next1; | |
355 | ||
356 | for (next = free_pendings; next; next = next1) | |
357 | { | |
358 | next1 = next->next; | |
b8c9b27d | 359 | xfree ((void *) next); |
c906108c SS |
360 | } |
361 | free_pendings = NULL; | |
362 | ||
363 | free_pending_blocks (); | |
364 | ||
365 | for (next = file_symbols; next != NULL; next = next1) | |
366 | { | |
367 | next1 = next->next; | |
b8c9b27d | 368 | xfree ((void *) next); |
c906108c SS |
369 | } |
370 | file_symbols = NULL; | |
371 | ||
372 | for (next = global_symbols; next != NULL; next = next1) | |
373 | { | |
374 | next1 = next->next; | |
b8c9b27d | 375 | xfree ((void *) next); |
c906108c SS |
376 | } |
377 | global_symbols = NULL; | |
99d9066e | 378 | |
801e3a5b | 379 | if (pending_addrmap) |
0ab9ce85 DE |
380 | obstack_free (&pending_addrmap_obstack, NULL); |
381 | pending_addrmap = NULL; | |
382 | ||
383 | free_buildsym_compunit (); | |
c906108c SS |
384 | } |
385 | ||
4a64f543 | 386 | /* This function is called to discard any pending blocks. */ |
c906108c | 387 | |
652788a7 TT |
388 | static void |
389 | free_pending_blocks () | |
c906108c | 390 | { |
93eed41f TT |
391 | if (pending_blocks != NULL) |
392 | { | |
393 | obstack_free (&pending_block_obstack, NULL); | |
394 | pending_blocks = NULL; | |
395 | } | |
c906108c SS |
396 | } |
397 | ||
398 | /* Take one of the lists of symbols and make a block from it. Keep | |
399 | the order the symbols have in the list (reversed from the input | |
400 | file). Put the block on the list of pending blocks. */ | |
401 | ||
84a146c9 | 402 | static struct block * |
63e43d3a PMR |
403 | finish_block_internal (struct symbol *symbol, |
404 | struct pending **listhead, | |
84a146c9 | 405 | struct pending_block *old_blocks, |
63e43d3a | 406 | const struct dynamic_prop *static_link, |
84a146c9 | 407 | CORE_ADDR start, CORE_ADDR end, |
6d30eef8 | 408 | int is_global, int expandable) |
c906108c | 409 | { |
43f3e411 | 410 | struct objfile *objfile = buildsym_compunit->objfile; |
5af949e3 | 411 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 AC |
412 | struct pending *next, *next1; |
413 | struct block *block; | |
414 | struct pending_block *pblock; | |
c906108c | 415 | struct pending_block *opblock; |
c906108c | 416 | |
84a146c9 TT |
417 | block = (is_global |
418 | ? allocate_global_block (&objfile->objfile_obstack) | |
419 | : allocate_block (&objfile->objfile_obstack)); | |
c906108c | 420 | |
261397f8 DJ |
421 | if (symbol) |
422 | { | |
5ffa0793 PA |
423 | BLOCK_DICT (block) |
424 | = dict_create_linear (&objfile->objfile_obstack, | |
425 | buildsym_compunit->language, *listhead); | |
261397f8 DJ |
426 | } |
427 | else | |
c906108c | 428 | { |
6d30eef8 DE |
429 | if (expandable) |
430 | { | |
5ffa0793 PA |
431 | BLOCK_DICT (block) |
432 | = dict_create_hashed_expandable (buildsym_compunit->language); | |
6d30eef8 DE |
433 | dict_add_pending (BLOCK_DICT (block), *listhead); |
434 | } | |
435 | else | |
436 | { | |
437 | BLOCK_DICT (block) = | |
5ffa0793 PA |
438 | dict_create_hashed (&objfile->objfile_obstack, |
439 | buildsym_compunit->language, *listhead); | |
6d30eef8 | 440 | } |
c906108c SS |
441 | } |
442 | ||
443 | BLOCK_START (block) = start; | |
444 | BLOCK_END (block) = end; | |
c906108c | 445 | |
c906108c SS |
446 | /* Put the block in as the value of the symbol that names it. */ |
447 | ||
448 | if (symbol) | |
449 | { | |
450 | struct type *ftype = SYMBOL_TYPE (symbol); | |
de4f826b | 451 | struct dict_iterator iter; |
c906108c SS |
452 | SYMBOL_BLOCK_VALUE (symbol) = block; |
453 | BLOCK_FUNCTION (block) = symbol; | |
454 | ||
455 | if (TYPE_NFIELDS (ftype) <= 0) | |
456 | { | |
457 | /* No parameter type information is recorded with the | |
458 | function's type. Set that from the type of the | |
4a64f543 | 459 | parameter symbols. */ |
c906108c SS |
460 | int nparams = 0, iparams; |
461 | struct symbol *sym; | |
8157b174 TT |
462 | |
463 | /* Here we want to directly access the dictionary, because | |
464 | we haven't fully initialized the block yet. */ | |
465 | ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym) | |
c906108c | 466 | { |
2a2d4dc3 AS |
467 | if (SYMBOL_IS_ARGUMENT (sym)) |
468 | nparams++; | |
c906108c SS |
469 | } |
470 | if (nparams > 0) | |
471 | { | |
472 | TYPE_NFIELDS (ftype) = nparams; | |
473 | TYPE_FIELDS (ftype) = (struct field *) | |
474 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
475 | ||
de4f826b | 476 | iparams = 0; |
8157b174 TT |
477 | /* Here we want to directly access the dictionary, because |
478 | we haven't fully initialized the block yet. */ | |
479 | ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym) | |
c906108c | 480 | { |
de4f826b DC |
481 | if (iparams == nparams) |
482 | break; | |
483 | ||
2a2d4dc3 | 484 | if (SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 485 | { |
c906108c | 486 | TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym); |
8176bb6d | 487 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c | 488 | iparams++; |
c906108c SS |
489 | } |
490 | } | |
491 | } | |
492 | } | |
493 | } | |
494 | else | |
495 | { | |
496 | BLOCK_FUNCTION (block) = NULL; | |
497 | } | |
498 | ||
63e43d3a PMR |
499 | if (static_link != NULL) |
500 | objfile_register_static_link (objfile, block, static_link); | |
501 | ||
c906108c SS |
502 | /* Now "free" the links of the list, and empty the list. */ |
503 | ||
504 | for (next = *listhead; next; next = next1) | |
505 | { | |
506 | next1 = next->next; | |
507 | next->next = free_pendings; | |
508 | free_pendings = next; | |
509 | } | |
510 | *listhead = NULL; | |
511 | ||
c906108c | 512 | /* Check to be sure that the blocks have an end address that is |
4a64f543 | 513 | greater than starting address. */ |
c906108c SS |
514 | |
515 | if (BLOCK_END (block) < BLOCK_START (block)) | |
516 | { | |
517 | if (symbol) | |
518 | { | |
b98664d3 | 519 | complaint (_("block end address less than block " |
3e43a32a | 520 | "start address in %s (patched it)"), |
de5ad195 | 521 | SYMBOL_PRINT_NAME (symbol)); |
c906108c SS |
522 | } |
523 | else | |
524 | { | |
b98664d3 | 525 | complaint (_("block end address %s less than block " |
3e43a32a | 526 | "start address %s (patched it)"), |
5af949e3 UW |
527 | paddress (gdbarch, BLOCK_END (block)), |
528 | paddress (gdbarch, BLOCK_START (block))); | |
c906108c | 529 | } |
4a64f543 | 530 | /* Better than nothing. */ |
c906108c SS |
531 | BLOCK_END (block) = BLOCK_START (block); |
532 | } | |
c906108c SS |
533 | |
534 | /* Install this block as the superblock of all blocks made since the | |
535 | start of this scope that don't have superblocks yet. */ | |
536 | ||
537 | opblock = NULL; | |
c0219d42 MS |
538 | for (pblock = pending_blocks; |
539 | pblock && pblock != old_blocks; | |
540 | pblock = pblock->next) | |
c906108c SS |
541 | { |
542 | if (BLOCK_SUPERBLOCK (pblock->block) == NULL) | |
543 | { | |
c906108c | 544 | /* Check to be sure the blocks are nested as we receive |
4a64f543 | 545 | them. If the compiler/assembler/linker work, this just |
14711c82 DJ |
546 | burns a small amount of time. |
547 | ||
548 | Skip blocks which correspond to a function; they're not | |
549 | physically nested inside this other blocks, only | |
550 | lexically nested. */ | |
551 | if (BLOCK_FUNCTION (pblock->block) == NULL | |
552 | && (BLOCK_START (pblock->block) < BLOCK_START (block) | |
553 | || BLOCK_END (pblock->block) > BLOCK_END (block))) | |
c906108c SS |
554 | { |
555 | if (symbol) | |
556 | { | |
b98664d3 | 557 | complaint (_("inner block not inside outer block in %s"), |
de5ad195 | 558 | SYMBOL_PRINT_NAME (symbol)); |
c906108c SS |
559 | } |
560 | else | |
561 | { | |
b98664d3 | 562 | complaint (_("inner block (%s-%s) not " |
3e43a32a | 563 | "inside outer block (%s-%s)"), |
5af949e3 UW |
564 | paddress (gdbarch, BLOCK_START (pblock->block)), |
565 | paddress (gdbarch, BLOCK_END (pblock->block)), | |
566 | paddress (gdbarch, BLOCK_START (block)), | |
567 | paddress (gdbarch, BLOCK_END (block))); | |
c906108c SS |
568 | } |
569 | if (BLOCK_START (pblock->block) < BLOCK_START (block)) | |
570 | BLOCK_START (pblock->block) = BLOCK_START (block); | |
571 | if (BLOCK_END (pblock->block) > BLOCK_END (block)) | |
572 | BLOCK_END (pblock->block) = BLOCK_END (block); | |
573 | } | |
c906108c SS |
574 | BLOCK_SUPERBLOCK (pblock->block) = block; |
575 | } | |
576 | opblock = pblock; | |
577 | } | |
578 | ||
22cee43f PMR |
579 | block_set_using (block, |
580 | (is_global | |
6cccc9a8 TT |
581 | ? buildsym_compunit->m_global_using_directives |
582 | : buildsym_compunit->m_local_using_directives), | |
22cee43f PMR |
583 | &objfile->objfile_obstack); |
584 | if (is_global) | |
6cccc9a8 | 585 | buildsym_compunit->m_global_using_directives = NULL; |
22cee43f | 586 | else |
6cccc9a8 | 587 | buildsym_compunit->m_local_using_directives = NULL; |
27aa8d6a | 588 | |
c906108c | 589 | record_pending_block (objfile, block, opblock); |
801e3a5b JB |
590 | |
591 | return block; | |
c906108c SS |
592 | } |
593 | ||
84a146c9 | 594 | struct block * |
63e43d3a PMR |
595 | finish_block (struct symbol *symbol, |
596 | struct pending **listhead, | |
84a146c9 | 597 | struct pending_block *old_blocks, |
63e43d3a | 598 | const struct dynamic_prop *static_link, |
4d663531 | 599 | CORE_ADDR start, CORE_ADDR end) |
84a146c9 | 600 | { |
63e43d3a | 601 | return finish_block_internal (symbol, listhead, old_blocks, static_link, |
4d663531 | 602 | start, end, 0, 0); |
84a146c9 | 603 | } |
de4f826b | 604 | |
c906108c SS |
605 | /* Record BLOCK on the list of all blocks in the file. Put it after |
606 | OPBLOCK, or at the beginning if opblock is NULL. This puts the | |
607 | block in the list after all its subblocks. | |
608 | ||
4a146b47 | 609 | Allocate the pending block struct in the objfile_obstack to save |
c906108c SS |
610 | time. This wastes a little space. FIXME: Is it worth it? */ |
611 | ||
0b49e518 | 612 | static void |
c906108c SS |
613 | record_pending_block (struct objfile *objfile, struct block *block, |
614 | struct pending_block *opblock) | |
615 | { | |
52f0bd74 | 616 | struct pending_block *pblock; |
c906108c | 617 | |
93eed41f TT |
618 | if (pending_blocks == NULL) |
619 | obstack_init (&pending_block_obstack); | |
620 | ||
8d749320 | 621 | pblock = XOBNEW (&pending_block_obstack, struct pending_block); |
c906108c SS |
622 | pblock->block = block; |
623 | if (opblock) | |
624 | { | |
625 | pblock->next = opblock->next; | |
626 | opblock->next = pblock; | |
627 | } | |
628 | else | |
629 | { | |
630 | pblock->next = pending_blocks; | |
631 | pending_blocks = pblock; | |
632 | } | |
633 | } | |
634 | ||
801e3a5b JB |
635 | |
636 | /* Record that the range of addresses from START to END_INCLUSIVE | |
637 | (inclusive, like it says) belongs to BLOCK. BLOCK's start and end | |
638 | addresses must be set already. You must apply this function to all | |
639 | BLOCK's children before applying it to BLOCK. | |
640 | ||
641 | If a call to this function complicates the picture beyond that | |
642 | already provided by BLOCK_START and BLOCK_END, then we create an | |
643 | address map for the block. */ | |
644 | void | |
645 | record_block_range (struct block *block, | |
646 | CORE_ADDR start, CORE_ADDR end_inclusive) | |
647 | { | |
648 | /* If this is any different from the range recorded in the block's | |
649 | own BLOCK_START and BLOCK_END, then note that the address map has | |
650 | become interesting. Note that even if this block doesn't have | |
651 | any "interesting" ranges, some later block might, so we still | |
652 | need to record this block in the addrmap. */ | |
653 | if (start != BLOCK_START (block) | |
654 | || end_inclusive + 1 != BLOCK_END (block)) | |
655 | pending_addrmap_interesting = 1; | |
656 | ||
657 | if (! pending_addrmap) | |
658 | { | |
659 | obstack_init (&pending_addrmap_obstack); | |
660 | pending_addrmap = addrmap_create_mutable (&pending_addrmap_obstack); | |
661 | } | |
662 | ||
663 | addrmap_set_empty (pending_addrmap, start, end_inclusive, block); | |
664 | } | |
665 | ||
822e978b | 666 | static struct blockvector * |
43f3e411 | 667 | make_blockvector (void) |
c906108c | 668 | { |
43f3e411 | 669 | struct objfile *objfile = buildsym_compunit->objfile; |
52f0bd74 AC |
670 | struct pending_block *next; |
671 | struct blockvector *blockvector; | |
672 | int i; | |
c906108c SS |
673 | |
674 | /* Count the length of the list of blocks. */ | |
675 | ||
676 | for (next = pending_blocks, i = 0; next; next = next->next, i++) | |
677 | {; | |
678 | } | |
679 | ||
680 | blockvector = (struct blockvector *) | |
4a146b47 | 681 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
682 | (sizeof (struct blockvector) |
683 | + (i - 1) * sizeof (struct block *))); | |
684 | ||
4a64f543 | 685 | /* Copy the blocks into the blockvector. This is done in reverse |
c906108c | 686 | order, which happens to put the blocks into the proper order |
4a64f543 | 687 | (ascending starting address). finish_block has hair to insert |
c906108c SS |
688 | each block into the list after its subblocks in order to make |
689 | sure this is true. */ | |
690 | ||
691 | BLOCKVECTOR_NBLOCKS (blockvector) = i; | |
692 | for (next = pending_blocks; next; next = next->next) | |
693 | { | |
694 | BLOCKVECTOR_BLOCK (blockvector, --i) = next->block; | |
695 | } | |
696 | ||
89ba75b1 | 697 | free_pending_blocks (); |
c906108c | 698 | |
801e3a5b JB |
699 | /* If we needed an address map for this symtab, record it in the |
700 | blockvector. */ | |
701 | if (pending_addrmap && pending_addrmap_interesting) | |
702 | BLOCKVECTOR_MAP (blockvector) | |
703 | = addrmap_create_fixed (pending_addrmap, &objfile->objfile_obstack); | |
704 | else | |
705 | BLOCKVECTOR_MAP (blockvector) = 0; | |
4aad0dfc | 706 | |
c906108c | 707 | /* Some compilers output blocks in the wrong order, but we depend on |
4a64f543 | 708 | their being in the right order so we can binary search. Check the |
4aad0dfc DE |
709 | order and moan about it. |
710 | Note: Remember that the first two blocks are the global and static | |
711 | blocks. We could special case that fact and begin checking at block 2. | |
712 | To avoid making that assumption we do not. */ | |
c906108c SS |
713 | if (BLOCKVECTOR_NBLOCKS (blockvector) > 1) |
714 | { | |
715 | for (i = 1; i < BLOCKVECTOR_NBLOCKS (blockvector); i++) | |
716 | { | |
717 | if (BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i - 1)) | |
718 | > BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i))) | |
719 | { | |
59527da0 JB |
720 | CORE_ADDR start |
721 | = BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i)); | |
c906108c | 722 | |
b98664d3 | 723 | complaint (_("block at %s out of order"), |
bb599908 | 724 | hex_string ((LONGEST) start)); |
c906108c SS |
725 | } |
726 | } | |
727 | } | |
c906108c SS |
728 | |
729 | return (blockvector); | |
730 | } | |
731 | \f | |
732 | /* Start recording information about source code that came from an | |
733 | included (or otherwise merged-in) source file with a different | |
4d663531 | 734 | name. NAME is the name of the file (cannot be NULL). */ |
c906108c SS |
735 | |
736 | void | |
4d663531 | 737 | start_subfile (const char *name) |
c906108c | 738 | { |
43f3e411 | 739 | const char *subfile_dirname; |
52f0bd74 | 740 | struct subfile *subfile; |
c906108c | 741 | |
43f3e411 DE |
742 | gdb_assert (buildsym_compunit != NULL); |
743 | ||
905eb0e2 | 744 | subfile_dirname = buildsym_compunit->comp_dir.get (); |
c906108c | 745 | |
43f3e411 DE |
746 | /* See if this subfile is already registered. */ |
747 | ||
748 | for (subfile = buildsym_compunit->subfiles; subfile; subfile = subfile->next) | |
c906108c | 749 | { |
84ba0adf DJ |
750 | char *subfile_name; |
751 | ||
752 | /* If NAME is an absolute path, and this subfile is not, then | |
753 | attempt to create an absolute path to compare. */ | |
754 | if (IS_ABSOLUTE_PATH (name) | |
755 | && !IS_ABSOLUTE_PATH (subfile->name) | |
43f3e411 DE |
756 | && subfile_dirname != NULL) |
757 | subfile_name = concat (subfile_dirname, SLASH_STRING, | |
6eb7ee03 | 758 | subfile->name, (char *) NULL); |
84ba0adf DJ |
759 | else |
760 | subfile_name = subfile->name; | |
761 | ||
762 | if (FILENAME_CMP (subfile_name, name) == 0) | |
c906108c SS |
763 | { |
764 | current_subfile = subfile; | |
84ba0adf DJ |
765 | if (subfile_name != subfile->name) |
766 | xfree (subfile_name); | |
c906108c SS |
767 | return; |
768 | } | |
84ba0adf DJ |
769 | if (subfile_name != subfile->name) |
770 | xfree (subfile_name); | |
c906108c SS |
771 | } |
772 | ||
43f3e411 | 773 | /* This subfile is not known. Add an entry for it. */ |
c906108c | 774 | |
8d749320 | 775 | subfile = XNEW (struct subfile); |
43f3e411 DE |
776 | memset (subfile, 0, sizeof (struct subfile)); |
777 | subfile->buildsym_compunit = buildsym_compunit; | |
778 | ||
779 | subfile->next = buildsym_compunit->subfiles; | |
780 | buildsym_compunit->subfiles = subfile; | |
781 | ||
c906108c SS |
782 | current_subfile = subfile; |
783 | ||
b74db436 | 784 | subfile->name = xstrdup (name); |
c906108c SS |
785 | |
786 | /* Initialize line-number recording for this subfile. */ | |
787 | subfile->line_vector = NULL; | |
788 | ||
789 | /* Default the source language to whatever can be deduced from the | |
790 | filename. If nothing can be deduced (such as for a C/C++ include | |
791 | file with a ".h" extension), then inherit whatever language the | |
792 | previous subfile had. This kludgery is necessary because there | |
793 | is no standard way in some object formats to record the source | |
794 | language. Also, when symtabs are allocated we try to deduce a | |
795 | language then as well, but it is too late for us to use that | |
796 | information while reading symbols, since symtabs aren't allocated | |
797 | until after all the symbols have been processed for a given | |
4a64f543 | 798 | source file. */ |
c906108c SS |
799 | |
800 | subfile->language = deduce_language_from_filename (subfile->name); | |
5aafa1cc PM |
801 | if (subfile->language == language_unknown |
802 | && subfile->next != NULL) | |
c906108c SS |
803 | { |
804 | subfile->language = subfile->next->language; | |
805 | } | |
806 | ||
25caa7a8 | 807 | /* If the filename of this subfile ends in .C, then change the |
c906108c | 808 | language of any pending subfiles from C to C++. We also accept |
25caa7a8 | 809 | any other C++ suffixes accepted by deduce_language_from_filename. */ |
c906108c SS |
810 | /* Likewise for f2c. */ |
811 | ||
812 | if (subfile->name) | |
813 | { | |
814 | struct subfile *s; | |
815 | enum language sublang = deduce_language_from_filename (subfile->name); | |
816 | ||
817 | if (sublang == language_cplus || sublang == language_fortran) | |
43f3e411 | 818 | for (s = buildsym_compunit->subfiles; s != NULL; s = s->next) |
c906108c SS |
819 | if (s->language == language_c) |
820 | s->language = sublang; | |
821 | } | |
822 | ||
823 | /* And patch up this file if necessary. */ | |
824 | if (subfile->language == language_c | |
825 | && subfile->next != NULL | |
826 | && (subfile->next->language == language_cplus | |
827 | || subfile->next->language == language_fortran)) | |
828 | { | |
829 | subfile->language = subfile->next->language; | |
830 | } | |
831 | } | |
832 | ||
43f3e411 | 833 | /* Delete the buildsym compunit. */ |
7bab9b58 DE |
834 | |
835 | static void | |
43f3e411 | 836 | free_buildsym_compunit (void) |
7bab9b58 | 837 | { |
43f3e411 DE |
838 | if (buildsym_compunit == NULL) |
839 | return; | |
b248663f | 840 | delete buildsym_compunit; |
43f3e411 | 841 | buildsym_compunit = NULL; |
0ab9ce85 | 842 | current_subfile = NULL; |
7bab9b58 DE |
843 | } |
844 | ||
c906108c SS |
845 | /* For stabs readers, the first N_SO symbol is assumed to be the |
846 | source file name, and the subfile struct is initialized using that | |
847 | assumption. If another N_SO symbol is later seen, immediately | |
848 | following the first one, then the first one is assumed to be the | |
849 | directory name and the second one is really the source file name. | |
850 | ||
851 | So we have to patch up the subfile struct by moving the old name | |
852 | value to dirname and remembering the new name. Some sanity | |
853 | checking is performed to ensure that the state of the subfile | |
854 | struct is reasonable and that the old name we are assuming to be a | |
4a64f543 | 855 | directory name actually is (by checking for a trailing '/'). */ |
c906108c SS |
856 | |
857 | void | |
a121b7c1 | 858 | patch_subfile_names (struct subfile *subfile, const char *name) |
c906108c | 859 | { |
43f3e411 DE |
860 | if (subfile != NULL |
861 | && buildsym_compunit->comp_dir == NULL | |
862 | && subfile->name != NULL | |
0ba1096a | 863 | && IS_DIR_SEPARATOR (subfile->name[strlen (subfile->name) - 1])) |
c906108c | 864 | { |
905eb0e2 | 865 | buildsym_compunit->comp_dir.reset (subfile->name); |
1b36a34b | 866 | subfile->name = xstrdup (name); |
46212e0b | 867 | set_last_source_file (name); |
c906108c SS |
868 | |
869 | /* Default the source language to whatever can be deduced from | |
870 | the filename. If nothing can be deduced (such as for a C/C++ | |
871 | include file with a ".h" extension), then inherit whatever | |
872 | language the previous subfile had. This kludgery is | |
873 | necessary because there is no standard way in some object | |
874 | formats to record the source language. Also, when symtabs | |
875 | are allocated we try to deduce a language then as well, but | |
876 | it is too late for us to use that information while reading | |
877 | symbols, since symtabs aren't allocated until after all the | |
4a64f543 | 878 | symbols have been processed for a given source file. */ |
c906108c SS |
879 | |
880 | subfile->language = deduce_language_from_filename (subfile->name); | |
5aafa1cc PM |
881 | if (subfile->language == language_unknown |
882 | && subfile->next != NULL) | |
c906108c SS |
883 | { |
884 | subfile->language = subfile->next->language; | |
885 | } | |
886 | } | |
887 | } | |
888 | \f | |
889 | /* Handle the N_BINCL and N_EINCL symbol types that act like N_SOL for | |
890 | switching source files (different subfiles, as we call them) within | |
891 | one object file, but using a stack rather than in an arbitrary | |
892 | order. */ | |
893 | ||
894 | void | |
8419ee53 | 895 | push_subfile () |
c906108c | 896 | { |
8419ee53 | 897 | gdb_assert (buildsym_compunit != nullptr); |
ccdac490 | 898 | gdb_assert (current_subfile != NULL && current_subfile->name != NULL); |
8419ee53 | 899 | buildsym_compunit->m_subfile_stack.push_back (current_subfile->name); |
c906108c SS |
900 | } |
901 | ||
8419ee53 TT |
902 | const char * |
903 | pop_subfile () | |
c906108c | 904 | { |
8419ee53 TT |
905 | gdb_assert (buildsym_compunit != nullptr); |
906 | gdb_assert (!buildsym_compunit->m_subfile_stack.empty ()); | |
907 | const char *name = buildsym_compunit->m_subfile_stack.back (); | |
908 | buildsym_compunit->m_subfile_stack.pop_back (); | |
909 | return name; | |
c906108c SS |
910 | } |
911 | \f | |
912 | /* Add a linetable entry for line number LINE and address PC to the | |
913 | line vector for SUBFILE. */ | |
914 | ||
915 | void | |
aa1ee363 | 916 | record_line (struct subfile *subfile, int line, CORE_ADDR pc) |
c906108c SS |
917 | { |
918 | struct linetable_entry *e; | |
c906108c | 919 | |
cc59ec59 | 920 | /* Ignore the dummy line number in libg.o */ |
c906108c SS |
921 | if (line == 0xffff) |
922 | { | |
923 | return; | |
924 | } | |
925 | ||
926 | /* Make sure line vector exists and is big enough. */ | |
927 | if (!subfile->line_vector) | |
928 | { | |
929 | subfile->line_vector_length = INITIAL_LINE_VECTOR_LENGTH; | |
930 | subfile->line_vector = (struct linetable *) | |
931 | xmalloc (sizeof (struct linetable) | |
c5aa993b | 932 | + subfile->line_vector_length * sizeof (struct linetable_entry)); |
c906108c | 933 | subfile->line_vector->nitems = 0; |
530fedbc | 934 | buildsym_compunit->m_have_line_numbers = true; |
c906108c SS |
935 | } |
936 | ||
937 | if (subfile->line_vector->nitems + 1 >= subfile->line_vector_length) | |
938 | { | |
939 | subfile->line_vector_length *= 2; | |
940 | subfile->line_vector = (struct linetable *) | |
941 | xrealloc ((char *) subfile->line_vector, | |
942 | (sizeof (struct linetable) | |
943 | + (subfile->line_vector_length | |
944 | * sizeof (struct linetable_entry)))); | |
945 | } | |
946 | ||
607ae575 DJ |
947 | /* Normally, we treat lines as unsorted. But the end of sequence |
948 | marker is special. We sort line markers at the same PC by line | |
949 | number, so end of sequence markers (which have line == 0) appear | |
950 | first. This is right if the marker ends the previous function, | |
951 | and there is no padding before the next function. But it is | |
952 | wrong if the previous line was empty and we are now marking a | |
953 | switch to a different subfile. We must leave the end of sequence | |
954 | marker at the end of this group of lines, not sort the empty line | |
955 | to after the marker. The easiest way to accomplish this is to | |
956 | delete any empty lines from our table, if they are followed by | |
957 | end of sequence markers. All we lose is the ability to set | |
958 | breakpoints at some lines which contain no instructions | |
959 | anyway. */ | |
960 | if (line == 0 && subfile->line_vector->nitems > 0) | |
961 | { | |
962 | e = subfile->line_vector->item + subfile->line_vector->nitems - 1; | |
963 | while (subfile->line_vector->nitems > 0 && e->pc == pc) | |
964 | { | |
965 | e--; | |
966 | subfile->line_vector->nitems--; | |
967 | } | |
968 | } | |
969 | ||
c906108c SS |
970 | e = subfile->line_vector->item + subfile->line_vector->nitems++; |
971 | e->line = line; | |
607ae575 | 972 | e->pc = pc; |
c906108c SS |
973 | } |
974 | ||
975 | /* Needed in order to sort line tables from IBM xcoff files. Sigh! */ | |
976 | ||
977 | static int | |
978 | compare_line_numbers (const void *ln1p, const void *ln2p) | |
979 | { | |
980 | struct linetable_entry *ln1 = (struct linetable_entry *) ln1p; | |
981 | struct linetable_entry *ln2 = (struct linetable_entry *) ln2p; | |
982 | ||
983 | /* Note: this code does not assume that CORE_ADDRs can fit in ints. | |
984 | Please keep it that way. */ | |
985 | if (ln1->pc < ln2->pc) | |
986 | return -1; | |
987 | ||
988 | if (ln1->pc > ln2->pc) | |
989 | return 1; | |
990 | ||
991 | /* If pc equal, sort by line. I'm not sure whether this is optimum | |
992 | behavior (see comment at struct linetable in symtab.h). */ | |
993 | return ln1->line - ln2->line; | |
994 | } | |
995 | \f | |
43f3e411 DE |
996 | /* See buildsym.h. */ |
997 | ||
998 | struct compunit_symtab * | |
999 | buildsym_compunit_symtab (void) | |
1000 | { | |
1001 | gdb_assert (buildsym_compunit != NULL); | |
1002 | ||
1003 | return buildsym_compunit->compunit_symtab; | |
1004 | } | |
1005 | ||
1006 | /* See buildsym.h. */ | |
fc474241 DE |
1007 | |
1008 | struct macro_table * | |
43f3e411 | 1009 | get_macro_table (void) |
fc474241 | 1010 | { |
43f3e411 DE |
1011 | struct objfile *objfile; |
1012 | ||
1013 | gdb_assert (buildsym_compunit != NULL); | |
6a976300 | 1014 | return buildsym_compunit->get_macro_table (); |
fc474241 DE |
1015 | } |
1016 | \f | |
0ab9ce85 DE |
1017 | /* Init state to prepare for building a symtab. |
1018 | Note: This can't be done in buildsym_init because dbxread.c and xcoffread.c | |
1019 | can call start_symtab+end_symtab multiple times after one call to | |
1020 | buildsym_init. */ | |
1021 | ||
1022 | static void | |
2c99ee5c | 1023 | prepare_for_building () |
0ab9ce85 | 1024 | { |
0ab9ce85 | 1025 | local_symbols = NULL; |
0ab9ce85 | 1026 | |
0ab9ce85 | 1027 | /* These should have been reset either by successful completion of building |
33c7c59d | 1028 | a symtab, or by the scoped_free_pendings destructor. */ |
0ab9ce85 DE |
1029 | gdb_assert (file_symbols == NULL); |
1030 | gdb_assert (global_symbols == NULL); | |
0ab9ce85 DE |
1031 | gdb_assert (pending_addrmap == NULL); |
1032 | gdb_assert (current_subfile == NULL); | |
e62cca7c | 1033 | gdb_assert (buildsym_compunit == nullptr); |
0ab9ce85 DE |
1034 | } |
1035 | ||
4d663531 | 1036 | /* Start a new symtab for a new source file in OBJFILE. Called, for example, |
c906108c SS |
1037 | when a stabs symbol of type N_SO is seen, or when a DWARF |
1038 | TAG_compile_unit DIE is seen. It indicates the start of data for | |
0b0287a1 DE |
1039 | one original source file. |
1040 | ||
5ffa0793 PA |
1041 | NAME is the name of the file (cannot be NULL). COMP_DIR is the |
1042 | directory in which the file was compiled (or NULL if not known). | |
1043 | START_ADDR is the lowest address of objects in the file (or 0 if | |
1044 | not known). LANGUAGE is the language of the source file, or | |
1045 | language_unknown if not known, in which case it'll be deduced from | |
1046 | the filename. */ | |
c906108c | 1047 | |
43f3e411 | 1048 | struct compunit_symtab * |
4d663531 | 1049 | start_symtab (struct objfile *objfile, const char *name, const char *comp_dir, |
5ffa0793 | 1050 | CORE_ADDR start_addr, enum language language) |
c906108c | 1051 | { |
2c99ee5c | 1052 | prepare_for_building (); |
43f3e411 | 1053 | |
c0015d44 | 1054 | buildsym_compunit = new struct buildsym_compunit (objfile, name, comp_dir, |
2c99ee5c | 1055 | language, start_addr); |
43f3e411 | 1056 | |
0ab9ce85 | 1057 | /* Allocate the compunit symtab now. The caller needs it to allocate |
43f3e411 DE |
1058 | non-primary symtabs. It is also needed by get_macro_table. */ |
1059 | buildsym_compunit->compunit_symtab = allocate_compunit_symtab (objfile, | |
1060 | name); | |
1061 | ||
1062 | /* Build the subfile for NAME (the main source file) so that we can record | |
1063 | a pointer to it for later. | |
1064 | IMPORTANT: Do not allocate a struct symtab for NAME here. | |
1065 | It can happen that the debug info provides a different path to NAME than | |
1066 | DIRNAME,NAME. We cope with this in watch_main_source_file_lossage but | |
1067 | that only works if the main_subfile doesn't have a symtab yet. */ | |
4d663531 | 1068 | start_subfile (name); |
7bab9b58 DE |
1069 | /* Save this so that we don't have to go looking for it at the end |
1070 | of the subfiles list. */ | |
43f3e411 DE |
1071 | buildsym_compunit->main_subfile = current_subfile; |
1072 | ||
43f3e411 | 1073 | return buildsym_compunit->compunit_symtab; |
6d30eef8 DE |
1074 | } |
1075 | ||
1076 | /* Restart compilation for a symtab. | |
0ab9ce85 DE |
1077 | CUST is the result of end_expandable_symtab. |
1078 | NAME, START_ADDR are the source file we are resuming with. | |
1079 | ||
6d30eef8 | 1080 | This is used when a symtab is built from multiple sources. |
0ab9ce85 DE |
1081 | The symtab is first built with start_symtab/end_expandable_symtab |
1082 | and then for each additional piece call restart_symtab/augment_*_symtab. | |
1083 | Note: At the moment there is only augment_type_symtab. */ | |
6d30eef8 DE |
1084 | |
1085 | void | |
0ab9ce85 DE |
1086 | restart_symtab (struct compunit_symtab *cust, |
1087 | const char *name, CORE_ADDR start_addr) | |
6d30eef8 | 1088 | { |
2c99ee5c | 1089 | prepare_for_building (); |
c906108c | 1090 | |
b248663f TT |
1091 | buildsym_compunit |
1092 | = new struct buildsym_compunit (COMPUNIT_OBJFILE (cust), | |
c0015d44 | 1093 | name, |
b248663f | 1094 | COMPUNIT_DIRNAME (cust), |
2c99ee5c TT |
1095 | compunit_language (cust), |
1096 | start_addr); | |
0ab9ce85 | 1097 | buildsym_compunit->compunit_symtab = cust; |
c906108c SS |
1098 | } |
1099 | ||
4a64f543 MS |
1100 | /* Subroutine of end_symtab to simplify it. Look for a subfile that |
1101 | matches the main source file's basename. If there is only one, and | |
1102 | if the main source file doesn't have any symbol or line number | |
1103 | information, then copy this file's symtab and line_vector to the | |
1104 | main source file's subfile and discard the other subfile. This can | |
1105 | happen because of a compiler bug or from the user playing games | |
1106 | with #line or from things like a distributed build system that | |
43f3e411 DE |
1107 | manipulates the debug info. This can also happen from an innocent |
1108 | symlink in the paths, we don't canonicalize paths here. */ | |
4584e32e DE |
1109 | |
1110 | static void | |
1111 | watch_main_source_file_lossage (void) | |
1112 | { | |
43f3e411 | 1113 | struct subfile *mainsub, *subfile; |
4584e32e | 1114 | |
43f3e411 | 1115 | /* We have to watch for buildsym_compunit == NULL here. It's a quirk of |
7bab9b58 | 1116 | end_symtab, it can return NULL so there may not be a main subfile. */ |
43f3e411 | 1117 | if (buildsym_compunit == NULL) |
7bab9b58 | 1118 | return; |
4584e32e | 1119 | |
43f3e411 DE |
1120 | /* Get the main source file. */ |
1121 | mainsub = buildsym_compunit->main_subfile; | |
1122 | ||
4a64f543 | 1123 | /* If the main source file doesn't have any line number or symbol |
7bab9b58 | 1124 | info, look for an alias in another subfile. */ |
4584e32e | 1125 | |
43f3e411 DE |
1126 | if (mainsub->line_vector == NULL |
1127 | && mainsub->symtab == NULL) | |
4584e32e | 1128 | { |
43f3e411 | 1129 | const char *mainbase = lbasename (mainsub->name); |
4584e32e DE |
1130 | int nr_matches = 0; |
1131 | struct subfile *prevsub; | |
1132 | struct subfile *mainsub_alias = NULL; | |
1133 | struct subfile *prev_mainsub_alias = NULL; | |
1134 | ||
1135 | prevsub = NULL; | |
43f3e411 DE |
1136 | for (subfile = buildsym_compunit->subfiles; |
1137 | subfile != NULL; | |
4584e32e DE |
1138 | subfile = subfile->next) |
1139 | { | |
43f3e411 DE |
1140 | if (subfile == mainsub) |
1141 | continue; | |
0ba1096a | 1142 | if (filename_cmp (lbasename (subfile->name), mainbase) == 0) |
4584e32e DE |
1143 | { |
1144 | ++nr_matches; | |
1145 | mainsub_alias = subfile; | |
1146 | prev_mainsub_alias = prevsub; | |
1147 | } | |
1148 | prevsub = subfile; | |
1149 | } | |
1150 | ||
1151 | if (nr_matches == 1) | |
1152 | { | |
43f3e411 | 1153 | gdb_assert (mainsub_alias != NULL && mainsub_alias != mainsub); |
4584e32e DE |
1154 | |
1155 | /* Found a match for the main source file. | |
1156 | Copy its line_vector and symtab to the main subfile | |
1157 | and then discard it. */ | |
1158 | ||
43f3e411 DE |
1159 | mainsub->line_vector = mainsub_alias->line_vector; |
1160 | mainsub->line_vector_length = mainsub_alias->line_vector_length; | |
1161 | mainsub->symtab = mainsub_alias->symtab; | |
4584e32e DE |
1162 | |
1163 | if (prev_mainsub_alias == NULL) | |
43f3e411 | 1164 | buildsym_compunit->subfiles = mainsub_alias->next; |
4584e32e DE |
1165 | else |
1166 | prev_mainsub_alias->next = mainsub_alias->next; | |
98387a29 | 1167 | xfree (mainsub_alias->name); |
4584e32e DE |
1168 | xfree (mainsub_alias); |
1169 | } | |
1170 | } | |
1171 | } | |
1172 | ||
0ab9ce85 DE |
1173 | /* Reset state after a successful building of a symtab. |
1174 | This exists because dbxread.c and xcoffread.c can call | |
1175 | start_symtab+end_symtab multiple times after one call to buildsym_init, | |
33c7c59d | 1176 | and before the scoped_free_pendings destructor is called. |
0ab9ce85 | 1177 | We keep the free_pendings list around for dbx/xcoff sake. */ |
6d30eef8 DE |
1178 | |
1179 | static void | |
1180 | reset_symtab_globals (void) | |
1181 | { | |
0ab9ce85 DE |
1182 | local_symbols = NULL; |
1183 | file_symbols = NULL; | |
1184 | global_symbols = NULL; | |
1185 | ||
6d30eef8 | 1186 | if (pending_addrmap) |
0ab9ce85 DE |
1187 | obstack_free (&pending_addrmap_obstack, NULL); |
1188 | pending_addrmap = NULL; | |
1189 | ||
1190 | free_buildsym_compunit (); | |
6d30eef8 DE |
1191 | } |
1192 | ||
4359dff1 JK |
1193 | /* Implementation of the first part of end_symtab. It allows modifying |
1194 | STATIC_BLOCK before it gets finalized by end_symtab_from_static_block. | |
1195 | If the returned value is NULL there is no blockvector created for | |
1196 | this symtab (you still must call end_symtab_from_static_block). | |
c906108c | 1197 | |
4359dff1 JK |
1198 | END_ADDR is the same as for end_symtab: the address of the end of the |
1199 | file's text. | |
c906108c | 1200 | |
4359dff1 | 1201 | If EXPANDABLE is non-zero the STATIC_BLOCK dictionary is made |
36586728 TT |
1202 | expandable. |
1203 | ||
1204 | If REQUIRED is non-zero, then a symtab is created even if it does | |
1205 | not contain any symbols. */ | |
6d30eef8 | 1206 | |
4359dff1 | 1207 | struct block * |
4d663531 | 1208 | end_symtab_get_static_block (CORE_ADDR end_addr, int expandable, int required) |
c906108c | 1209 | { |
43f3e411 | 1210 | struct objfile *objfile = buildsym_compunit->objfile; |
4d663531 | 1211 | |
c906108c SS |
1212 | /* Finish the lexical context of the last function in the file; pop |
1213 | the context stack. */ | |
1214 | ||
a60f3166 | 1215 | if (!buildsym_compunit->m_context_stack.empty ()) |
c906108c | 1216 | { |
a60f3166 | 1217 | struct context_stack cstk = pop_context (); |
4359dff1 | 1218 | |
c906108c | 1219 | /* Make a block for the local symbols within. */ |
a60f3166 TT |
1220 | finish_block (cstk.name, &local_symbols, cstk.old_blocks, NULL, |
1221 | cstk.start_addr, end_addr); | |
c906108c | 1222 | |
a60f3166 | 1223 | if (!buildsym_compunit->m_context_stack.empty ()) |
c906108c SS |
1224 | { |
1225 | /* This is said to happen with SCO. The old coffread.c | |
1226 | code simply emptied the context stack, so we do the | |
1227 | same. FIXME: Find out why it is happening. This is not | |
1228 | believed to happen in most cases (even for coffread.c); | |
1229 | it used to be an abort(). */ | |
b98664d3 | 1230 | complaint (_("Context stack not empty in end_symtab")); |
a60f3166 | 1231 | buildsym_compunit->m_context_stack.clear (); |
c906108c SS |
1232 | } |
1233 | } | |
1234 | ||
1235 | /* Reordered executables may have out of order pending blocks; if | |
1236 | OBJF_REORDERED is true, then sort the pending blocks. */ | |
6d30eef8 | 1237 | |
c906108c SS |
1238 | if ((objfile->flags & OBJF_REORDERED) && pending_blocks) |
1239 | { | |
07e7f39f | 1240 | struct pending_block *pb; |
c906108c | 1241 | |
b05628f0 | 1242 | std::vector<block *> barray; |
c906108c | 1243 | |
07e7f39f | 1244 | for (pb = pending_blocks; pb != NULL; pb = pb->next) |
b05628f0 | 1245 | barray.push_back (pb->block); |
07e7f39f | 1246 | |
5033013f UW |
1247 | /* Sort blocks by start address in descending order. Blocks with the |
1248 | same start address must remain in the original order to preserve | |
1249 | inline function caller/callee relationships. */ | |
1250 | std::stable_sort (barray.begin (), barray.end (), | |
1251 | [] (const block *a, const block *b) | |
1252 | { | |
1253 | return BLOCK_START (a) > BLOCK_START (b); | |
1254 | }); | |
07e7f39f | 1255 | |
b05628f0 | 1256 | int i = 0; |
07e7f39f | 1257 | for (pb = pending_blocks; pb != NULL; pb = pb->next) |
b05628f0 | 1258 | pb->block = barray[i++]; |
c906108c SS |
1259 | } |
1260 | ||
1261 | /* Cleanup any undefined types that have been left hanging around | |
1262 | (this needs to be done before the finish_blocks so that | |
1263 | file_symbols is still good). | |
c5aa993b | 1264 | |
0a0edcd5 | 1265 | Both cleanup_undefined_stabs_types and finish_global_stabs are stabs |
c906108c SS |
1266 | specific, but harmless for other symbol readers, since on gdb |
1267 | startup or when finished reading stabs, the state is set so these | |
1268 | are no-ops. FIXME: Is this handled right in case of QUIT? Can | |
1269 | we make this cleaner? */ | |
1270 | ||
0a0edcd5 | 1271 | cleanup_undefined_stabs_types (objfile); |
c906108c SS |
1272 | finish_global_stabs (objfile); |
1273 | ||
36586728 TT |
1274 | if (!required |
1275 | && pending_blocks == NULL | |
c906108c SS |
1276 | && file_symbols == NULL |
1277 | && global_symbols == NULL | |
530fedbc | 1278 | && !buildsym_compunit->m_have_line_numbers |
6a976300 | 1279 | && buildsym_compunit->m_pending_macros == NULL |
6cccc9a8 | 1280 | && buildsym_compunit->m_global_using_directives == NULL) |
c906108c | 1281 | { |
4359dff1 JK |
1282 | /* Ignore symtabs that have no functions with real debugging info. */ |
1283 | return NULL; | |
1284 | } | |
1285 | else | |
1286 | { | |
1287 | /* Define the STATIC_BLOCK. */ | |
63e43d3a | 1288 | return finish_block_internal (NULL, &file_symbols, NULL, NULL, |
2c99ee5c TT |
1289 | buildsym_compunit->m_last_source_start_addr, |
1290 | end_addr, 0, expandable); | |
4359dff1 JK |
1291 | } |
1292 | } | |
1293 | ||
7bab9b58 DE |
1294 | /* Subroutine of end_symtab_from_static_block to simplify it. |
1295 | Handle the "have blockvector" case. | |
1296 | See end_symtab_from_static_block for a description of the arguments. */ | |
1297 | ||
43f3e411 | 1298 | static struct compunit_symtab * |
7bab9b58 | 1299 | end_symtab_with_blockvector (struct block *static_block, |
4d663531 | 1300 | int section, int expandable) |
4359dff1 | 1301 | { |
43f3e411 DE |
1302 | struct objfile *objfile = buildsym_compunit->objfile; |
1303 | struct compunit_symtab *cu = buildsym_compunit->compunit_symtab; | |
7bab9b58 | 1304 | struct symtab *symtab; |
4359dff1 JK |
1305 | struct blockvector *blockvector; |
1306 | struct subfile *subfile; | |
7bab9b58 | 1307 | CORE_ADDR end_addr; |
4359dff1 | 1308 | |
7bab9b58 | 1309 | gdb_assert (static_block != NULL); |
43f3e411 DE |
1310 | gdb_assert (buildsym_compunit != NULL); |
1311 | gdb_assert (buildsym_compunit->subfiles != NULL); | |
7bab9b58 DE |
1312 | |
1313 | end_addr = BLOCK_END (static_block); | |
1314 | ||
1315 | /* Create the GLOBAL_BLOCK and build the blockvector. */ | |
63e43d3a | 1316 | finish_block_internal (NULL, &global_symbols, NULL, NULL, |
2c99ee5c | 1317 | buildsym_compunit->m_last_source_start_addr, end_addr, |
7bab9b58 | 1318 | 1, expandable); |
43f3e411 | 1319 | blockvector = make_blockvector (); |
c906108c | 1320 | |
f56ce883 DE |
1321 | /* Read the line table if it has to be read separately. |
1322 | This is only used by xcoffread.c. */ | |
c295b2e5 | 1323 | if (objfile->sf->sym_read_linetable != NULL) |
f56ce883 | 1324 | objfile->sf->sym_read_linetable (objfile); |
c906108c | 1325 | |
4584e32e DE |
1326 | /* Handle the case where the debug info specifies a different path |
1327 | for the main source file. It can cause us to lose track of its | |
1328 | line number information. */ | |
1329 | watch_main_source_file_lossage (); | |
1330 | ||
43f3e411 DE |
1331 | /* Now create the symtab objects proper, if not already done, |
1332 | one for each subfile. */ | |
c906108c | 1333 | |
43f3e411 DE |
1334 | for (subfile = buildsym_compunit->subfiles; |
1335 | subfile != NULL; | |
1336 | subfile = subfile->next) | |
c906108c SS |
1337 | { |
1338 | int linetablesize = 0; | |
c906108c | 1339 | |
7bab9b58 | 1340 | if (subfile->line_vector) |
c906108c | 1341 | { |
7bab9b58 DE |
1342 | linetablesize = sizeof (struct linetable) + |
1343 | subfile->line_vector->nitems * sizeof (struct linetable_entry); | |
1344 | ||
1345 | /* Like the pending blocks, the line table may be | |
1346 | scrambled in reordered executables. Sort it if | |
1347 | OBJF_REORDERED is true. */ | |
1348 | if (objfile->flags & OBJF_REORDERED) | |
1349 | qsort (subfile->line_vector->item, | |
1350 | subfile->line_vector->nitems, | |
1351 | sizeof (struct linetable_entry), compare_line_numbers); | |
1352 | } | |
9182c5bc | 1353 | |
7bab9b58 DE |
1354 | /* Allocate a symbol table if necessary. */ |
1355 | if (subfile->symtab == NULL) | |
43f3e411 | 1356 | subfile->symtab = allocate_symtab (cu, subfile->name); |
7bab9b58 | 1357 | symtab = subfile->symtab; |
9182c5bc | 1358 | |
7bab9b58 | 1359 | /* Fill in its components. */ |
43f3e411 | 1360 | |
7bab9b58 DE |
1361 | if (subfile->line_vector) |
1362 | { | |
1363 | /* Reallocate the line table on the symbol obstack. */ | |
8435453b | 1364 | SYMTAB_LINETABLE (symtab) = (struct linetable *) |
7bab9b58 | 1365 | obstack_alloc (&objfile->objfile_obstack, linetablesize); |
8435453b DE |
1366 | memcpy (SYMTAB_LINETABLE (symtab), subfile->line_vector, |
1367 | linetablesize); | |
c906108c | 1368 | } |
24be086d | 1369 | else |
c906108c | 1370 | { |
8435453b | 1371 | SYMTAB_LINETABLE (symtab) = NULL; |
c906108c | 1372 | } |
c906108c | 1373 | |
7bab9b58 DE |
1374 | /* Use whatever language we have been using for this |
1375 | subfile, not the one that was deduced in allocate_symtab | |
1376 | from the filename. We already did our own deducing when | |
1377 | we created the subfile, and we may have altered our | |
1378 | opinion of what language it is from things we found in | |
1379 | the symbols. */ | |
1380 | symtab->language = subfile->language; | |
43f3e411 | 1381 | } |
c906108c | 1382 | |
43f3e411 DE |
1383 | /* Make sure the symtab of main_subfile is the first in its list. */ |
1384 | { | |
1385 | struct symtab *main_symtab, *prev_symtab; | |
1386 | ||
1387 | main_symtab = buildsym_compunit->main_subfile->symtab; | |
1388 | prev_symtab = NULL; | |
1389 | ALL_COMPUNIT_FILETABS (cu, symtab) | |
1390 | { | |
1391 | if (symtab == main_symtab) | |
1392 | { | |
1393 | if (prev_symtab != NULL) | |
1394 | { | |
1395 | prev_symtab->next = main_symtab->next; | |
1396 | main_symtab->next = COMPUNIT_FILETABS (cu); | |
1397 | COMPUNIT_FILETABS (cu) = main_symtab; | |
1398 | } | |
1399 | break; | |
1400 | } | |
1401 | prev_symtab = symtab; | |
1402 | } | |
1403 | gdb_assert (main_symtab == COMPUNIT_FILETABS (cu)); | |
1404 | } | |
84a146c9 | 1405 | |
0ab9ce85 | 1406 | /* Fill out the compunit symtab. */ |
84a146c9 | 1407 | |
43f3e411 DE |
1408 | if (buildsym_compunit->comp_dir != NULL) |
1409 | { | |
1410 | /* Reallocate the dirname on the symbol obstack. */ | |
905eb0e2 | 1411 | const char *comp_dir = buildsym_compunit->comp_dir.get (); |
43f3e411 | 1412 | COMPUNIT_DIRNAME (cu) |
224c3ddb | 1413 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, |
905eb0e2 | 1414 | comp_dir, strlen (comp_dir)); |
c906108c SS |
1415 | } |
1416 | ||
43f3e411 DE |
1417 | /* Save the debug format string (if any) in the symtab. */ |
1418 | COMPUNIT_DEBUGFORMAT (cu) = buildsym_compunit->debugformat; | |
1419 | ||
1420 | /* Similarly for the producer. */ | |
1421 | COMPUNIT_PRODUCER (cu) = buildsym_compunit->producer; | |
1422 | ||
1423 | COMPUNIT_BLOCKVECTOR (cu) = blockvector; | |
7bab9b58 | 1424 | { |
43f3e411 | 1425 | struct block *b = BLOCKVECTOR_BLOCK (blockvector, GLOBAL_BLOCK); |
cb1df416 | 1426 | |
43f3e411 | 1427 | set_block_compunit_symtab (b, cu); |
7bab9b58 | 1428 | } |
cb1df416 | 1429 | |
43f3e411 DE |
1430 | COMPUNIT_BLOCK_LINE_SECTION (cu) = section; |
1431 | ||
6a976300 | 1432 | COMPUNIT_MACRO_TABLE (cu) = buildsym_compunit->release_macros (); |
43f3e411 | 1433 | |
7bab9b58 DE |
1434 | /* Default any symbols without a specified symtab to the primary symtab. */ |
1435 | { | |
1436 | int block_i; | |
1437 | ||
43f3e411 DE |
1438 | /* The main source file's symtab. */ |
1439 | symtab = COMPUNIT_FILETABS (cu); | |
1440 | ||
7bab9b58 DE |
1441 | for (block_i = 0; block_i < BLOCKVECTOR_NBLOCKS (blockvector); block_i++) |
1442 | { | |
1443 | struct block *block = BLOCKVECTOR_BLOCK (blockvector, block_i); | |
1444 | struct symbol *sym; | |
1445 | struct dict_iterator iter; | |
1446 | ||
1447 | /* Inlined functions may have symbols not in the global or | |
1448 | static symbol lists. */ | |
1449 | if (BLOCK_FUNCTION (block) != NULL) | |
08be3fe3 DE |
1450 | if (symbol_symtab (BLOCK_FUNCTION (block)) == NULL) |
1451 | symbol_set_symtab (BLOCK_FUNCTION (block), symtab); | |
7bab9b58 DE |
1452 | |
1453 | /* Note that we only want to fix up symbols from the local | |
1454 | blocks, not blocks coming from included symtabs. That is why | |
1455 | we use ALL_DICT_SYMBOLS here and not ALL_BLOCK_SYMBOLS. */ | |
1456 | ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym) | |
08be3fe3 DE |
1457 | if (symbol_symtab (sym) == NULL) |
1458 | symbol_set_symtab (sym, symtab); | |
7bab9b58 DE |
1459 | } |
1460 | } | |
edb3359d | 1461 | |
43f3e411 | 1462 | add_compunit_symtab_to_objfile (cu); |
43f3e411 DE |
1463 | |
1464 | return cu; | |
7bab9b58 DE |
1465 | } |
1466 | ||
1467 | /* Implementation of the second part of end_symtab. Pass STATIC_BLOCK | |
1468 | as value returned by end_symtab_get_static_block. | |
1469 | ||
1470 | SECTION is the same as for end_symtab: the section number | |
1471 | (in objfile->section_offsets) of the blockvector and linetable. | |
1472 | ||
1473 | If EXPANDABLE is non-zero the GLOBAL_BLOCK dictionary is made | |
1474 | expandable. */ | |
1475 | ||
43f3e411 | 1476 | struct compunit_symtab * |
7bab9b58 | 1477 | end_symtab_from_static_block (struct block *static_block, |
4d663531 | 1478 | int section, int expandable) |
7bab9b58 | 1479 | { |
43f3e411 | 1480 | struct compunit_symtab *cu; |
7bab9b58 DE |
1481 | |
1482 | if (static_block == NULL) | |
1483 | { | |
0ab9ce85 DE |
1484 | /* Handle the "no blockvector" case. |
1485 | When this happens there is nothing to record, so there's nothing | |
1486 | to do: memory will be freed up later. | |
1487 | ||
1488 | Note: We won't be adding a compunit to the objfile's list of | |
1489 | compunits, so there's nothing to unchain. However, since each symtab | |
1490 | is added to the objfile's obstack we can't free that space. | |
1491 | We could do better, but this is believed to be a sufficiently rare | |
1492 | event. */ | |
43f3e411 | 1493 | cu = NULL; |
7bab9b58 DE |
1494 | } |
1495 | else | |
43f3e411 | 1496 | cu = end_symtab_with_blockvector (static_block, section, expandable); |
cb1df416 | 1497 | |
6d30eef8 DE |
1498 | reset_symtab_globals (); |
1499 | ||
43f3e411 | 1500 | return cu; |
6d30eef8 DE |
1501 | } |
1502 | ||
4359dff1 JK |
1503 | /* Finish the symbol definitions for one main source file, close off |
1504 | all the lexical contexts for that file (creating struct block's for | |
1505 | them), then make the struct symtab for that file and put it in the | |
1506 | list of all such. | |
1507 | ||
1508 | END_ADDR is the address of the end of the file's text. SECTION is | |
1509 | the section number (in objfile->section_offsets) of the blockvector | |
1510 | and linetable. | |
1511 | ||
1512 | Note that it is possible for end_symtab() to return NULL. In | |
1513 | particular, for the DWARF case at least, it will return NULL when | |
1514 | it finds a compilation unit that has exactly one DIE, a | |
1515 | TAG_compile_unit DIE. This can happen when we link in an object | |
1516 | file that was compiled from an empty source file. Returning NULL | |
1517 | is probably not the correct thing to do, because then gdb will | |
1518 | never know about this empty file (FIXME). | |
1519 | ||
1520 | If you need to modify STATIC_BLOCK before it is finalized you should | |
1521 | call end_symtab_get_static_block and end_symtab_from_static_block | |
1522 | yourself. */ | |
6d30eef8 | 1523 | |
43f3e411 | 1524 | struct compunit_symtab * |
4d663531 | 1525 | end_symtab (CORE_ADDR end_addr, int section) |
6d30eef8 | 1526 | { |
4359dff1 JK |
1527 | struct block *static_block; |
1528 | ||
4d663531 DE |
1529 | static_block = end_symtab_get_static_block (end_addr, 0, 0); |
1530 | return end_symtab_from_static_block (static_block, section, 0); | |
6d30eef8 DE |
1531 | } |
1532 | ||
4359dff1 | 1533 | /* Same as end_symtab except create a symtab that can be later added to. */ |
6d30eef8 | 1534 | |
43f3e411 | 1535 | struct compunit_symtab * |
4d663531 | 1536 | end_expandable_symtab (CORE_ADDR end_addr, int section) |
6d30eef8 | 1537 | { |
4359dff1 JK |
1538 | struct block *static_block; |
1539 | ||
4d663531 DE |
1540 | static_block = end_symtab_get_static_block (end_addr, 1, 0); |
1541 | return end_symtab_from_static_block (static_block, section, 1); | |
6d30eef8 DE |
1542 | } |
1543 | ||
1544 | /* Subroutine of augment_type_symtab to simplify it. | |
43f3e411 DE |
1545 | Attach the main source file's symtab to all symbols in PENDING_LIST that |
1546 | don't have one. */ | |
6d30eef8 DE |
1547 | |
1548 | static void | |
43f3e411 DE |
1549 | set_missing_symtab (struct pending *pending_list, |
1550 | struct compunit_symtab *cu) | |
6d30eef8 DE |
1551 | { |
1552 | struct pending *pending; | |
1553 | int i; | |
1554 | ||
1555 | for (pending = pending_list; pending != NULL; pending = pending->next) | |
801e3a5b | 1556 | { |
6d30eef8 DE |
1557 | for (i = 0; i < pending->nsyms; ++i) |
1558 | { | |
08be3fe3 DE |
1559 | if (symbol_symtab (pending->symbol[i]) == NULL) |
1560 | symbol_set_symtab (pending->symbol[i], COMPUNIT_FILETABS (cu)); | |
6d30eef8 | 1561 | } |
801e3a5b | 1562 | } |
6d30eef8 | 1563 | } |
c906108c | 1564 | |
6d30eef8 DE |
1565 | /* Same as end_symtab, but for the case where we're adding more symbols |
1566 | to an existing symtab that is known to contain only type information. | |
1567 | This is the case for DWARF4 Type Units. */ | |
1568 | ||
1569 | void | |
0ab9ce85 | 1570 | augment_type_symtab (void) |
6d30eef8 | 1571 | { |
0ab9ce85 | 1572 | struct compunit_symtab *cust = buildsym_compunit->compunit_symtab; |
43f3e411 | 1573 | const struct blockvector *blockvector = COMPUNIT_BLOCKVECTOR (cust); |
6d30eef8 | 1574 | |
a60f3166 TT |
1575 | if (!buildsym_compunit->m_context_stack.empty ()) |
1576 | complaint (_("Context stack not empty in augment_type_symtab")); | |
6d30eef8 | 1577 | if (pending_blocks != NULL) |
b98664d3 | 1578 | complaint (_("Blocks in a type symtab")); |
6a976300 | 1579 | if (buildsym_compunit->m_pending_macros != NULL) |
b98664d3 | 1580 | complaint (_("Macro in a type symtab")); |
530fedbc | 1581 | if (buildsym_compunit->m_have_line_numbers) |
b98664d3 | 1582 | complaint (_("Line numbers recorded in a type symtab")); |
6d30eef8 DE |
1583 | |
1584 | if (file_symbols != NULL) | |
1585 | { | |
1586 | struct block *block = BLOCKVECTOR_BLOCK (blockvector, STATIC_BLOCK); | |
1587 | ||
1588 | /* First mark any symbols without a specified symtab as belonging | |
1589 | to the primary symtab. */ | |
43f3e411 | 1590 | set_missing_symtab (file_symbols, cust); |
6d30eef8 DE |
1591 | |
1592 | dict_add_pending (BLOCK_DICT (block), file_symbols); | |
1593 | } | |
1594 | ||
1595 | if (global_symbols != NULL) | |
1596 | { | |
1597 | struct block *block = BLOCKVECTOR_BLOCK (blockvector, GLOBAL_BLOCK); | |
1598 | ||
1599 | /* First mark any symbols without a specified symtab as belonging | |
1600 | to the primary symtab. */ | |
43f3e411 | 1601 | set_missing_symtab (global_symbols, cust); |
6d30eef8 DE |
1602 | |
1603 | dict_add_pending (BLOCK_DICT (block), global_symbols); | |
1604 | } | |
1605 | ||
1606 | reset_symtab_globals (); | |
c906108c SS |
1607 | } |
1608 | ||
1609 | /* Push a context block. Args are an identifying nesting level | |
1610 | (checkable when you pop it), and the starting PC address of this | |
1611 | context. */ | |
1612 | ||
1613 | struct context_stack * | |
1614 | push_context (int desc, CORE_ADDR valu) | |
1615 | { | |
a60f3166 | 1616 | gdb_assert (buildsym_compunit != nullptr); |
c906108c | 1617 | |
a60f3166 TT |
1618 | buildsym_compunit->m_context_stack.emplace_back (); |
1619 | struct context_stack *newobj = &buildsym_compunit->m_context_stack.back (); | |
c906108c | 1620 | |
fe978cb0 PA |
1621 | newobj->depth = desc; |
1622 | newobj->locals = local_symbols; | |
1623 | newobj->old_blocks = pending_blocks; | |
1624 | newobj->start_addr = valu; | |
6cccc9a8 TT |
1625 | newobj->local_using_directives |
1626 | = buildsym_compunit->m_local_using_directives; | |
fe978cb0 | 1627 | newobj->name = NULL; |
c906108c SS |
1628 | |
1629 | local_symbols = NULL; | |
6cccc9a8 | 1630 | buildsym_compunit->m_local_using_directives = NULL; |
c906108c | 1631 | |
fe978cb0 | 1632 | return newobj; |
c906108c | 1633 | } |
0c5e171a | 1634 | |
a672ef13 | 1635 | /* Pop a context block. Returns the address of the context block just |
4a64f543 | 1636 | popped. */ |
a672ef13 | 1637 | |
a60f3166 TT |
1638 | struct context_stack |
1639 | pop_context () | |
0c5e171a | 1640 | { |
a60f3166 TT |
1641 | gdb_assert (buildsym_compunit != nullptr); |
1642 | gdb_assert (!buildsym_compunit->m_context_stack.empty ()); | |
1643 | struct context_stack result = buildsym_compunit->m_context_stack.back (); | |
1644 | buildsym_compunit->m_context_stack.pop_back (); | |
1645 | return result; | |
0c5e171a KD |
1646 | } |
1647 | ||
c906108c | 1648 | \f |
357e46e7 | 1649 | |
c906108c | 1650 | void |
554d387d | 1651 | record_debugformat (const char *format) |
c906108c | 1652 | { |
43f3e411 | 1653 | buildsym_compunit->debugformat = format; |
c906108c SS |
1654 | } |
1655 | ||
303b6f5d DJ |
1656 | void |
1657 | record_producer (const char *producer) | |
1658 | { | |
43f3e411 | 1659 | buildsym_compunit->producer = producer; |
303b6f5d DJ |
1660 | } |
1661 | ||
c906108c | 1662 | \f |
46212e0b | 1663 | |
46212e0b TT |
1664 | /* See buildsym.h. */ |
1665 | ||
1666 | void | |
1667 | set_last_source_file (const char *name) | |
1668 | { | |
c0015d44 TT |
1669 | gdb_assert (buildsym_compunit != nullptr || name == nullptr); |
1670 | if (buildsym_compunit != nullptr) | |
1671 | buildsym_compunit->set_last_source_file (name); | |
46212e0b TT |
1672 | } |
1673 | ||
1674 | /* See buildsym.h. */ | |
1675 | ||
1676 | const char * | |
1677 | get_last_source_file (void) | |
1678 | { | |
c0015d44 TT |
1679 | if (buildsym_compunit == nullptr) |
1680 | return nullptr; | |
1681 | return buildsym_compunit->m_last_source_file.get (); | |
46212e0b TT |
1682 | } |
1683 | ||
2c99ee5c TT |
1684 | /* See buildsym.h. */ |
1685 | ||
1686 | void | |
1687 | set_last_source_start_addr (CORE_ADDR addr) | |
1688 | { | |
1689 | gdb_assert (buildsym_compunit != nullptr); | |
1690 | buildsym_compunit->m_last_source_start_addr = addr; | |
1691 | } | |
1692 | ||
1693 | /* See buildsym.h. */ | |
1694 | ||
1695 | CORE_ADDR | |
1696 | get_last_source_start_addr () | |
1697 | { | |
1698 | gdb_assert (buildsym_compunit != nullptr); | |
1699 | return buildsym_compunit->m_last_source_start_addr; | |
1700 | } | |
1701 | ||
6cccc9a8 TT |
1702 | /* See buildsym.h. */ |
1703 | ||
1704 | struct using_direct ** | |
1705 | get_local_using_directives () | |
1706 | { | |
1707 | gdb_assert (buildsym_compunit != nullptr); | |
1708 | return &buildsym_compunit->m_local_using_directives; | |
1709 | } | |
1710 | ||
1711 | /* See buildsym.h. */ | |
1712 | ||
1713 | void | |
1714 | set_local_using_directives (struct using_direct *new_local) | |
1715 | { | |
1716 | gdb_assert (buildsym_compunit != nullptr); | |
1717 | buildsym_compunit->m_local_using_directives = new_local; | |
1718 | } | |
1719 | ||
1720 | /* See buildsym.h. */ | |
1721 | ||
1722 | struct using_direct ** | |
1723 | get_global_using_directives () | |
1724 | { | |
1725 | gdb_assert (buildsym_compunit != nullptr); | |
1726 | return &buildsym_compunit->m_global_using_directives; | |
1727 | } | |
1728 | ||
a60f3166 TT |
1729 | /* See buildsym.h. */ |
1730 | ||
1731 | bool | |
1732 | outermost_context_p () | |
1733 | { | |
1734 | gdb_assert (buildsym_compunit != nullptr); | |
1735 | return buildsym_compunit->m_context_stack.empty (); | |
1736 | } | |
1737 | ||
1738 | /* See buildsym.h. */ | |
1739 | ||
1740 | struct context_stack * | |
1741 | get_current_context_stack () | |
1742 | { | |
1743 | gdb_assert (buildsym_compunit != nullptr); | |
1744 | if (buildsym_compunit->m_context_stack.empty ()) | |
1745 | return nullptr; | |
1746 | return &buildsym_compunit->m_context_stack.back (); | |
1747 | } | |
1748 | ||
1749 | /* See buildsym.h. */ | |
1750 | ||
1751 | int | |
1752 | get_context_stack_depth () | |
1753 | { | |
1754 | gdb_assert (buildsym_compunit != nullptr); | |
1755 | return buildsym_compunit->m_context_stack.size (); | |
1756 | } | |
1757 | ||
46212e0b TT |
1758 | \f |
1759 | ||
c906108c SS |
1760 | /* Initialize anything that needs initializing when starting to read a |
1761 | fresh piece of a symbol file, e.g. reading in the stuff | |
1762 | corresponding to a psymtab. */ | |
1763 | ||
1764 | void | |
2c722d18 | 1765 | buildsym_init () |
c906108c | 1766 | { |
801e3a5b | 1767 | pending_addrmap_interesting = 0; |
0ab9ce85 | 1768 | |
33c7c59d | 1769 | /* Ensure the scoped_free_pendings destructor was called after |
0ab9ce85 DE |
1770 | the last time. */ |
1771 | gdb_assert (free_pendings == NULL); | |
1772 | gdb_assert (pending_blocks == NULL); | |
1773 | gdb_assert (file_symbols == NULL); | |
1774 | gdb_assert (global_symbols == NULL); | |
0ab9ce85 DE |
1775 | gdb_assert (pending_addrmap == NULL); |
1776 | gdb_assert (buildsym_compunit == NULL); | |
c906108c | 1777 | } |