Commit | Line | Data |
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c906108c | 1 | /* Support routines for building symbol tables in GDB's internal format. |
61baf725 | 2 | Copyright (C) 1986-2017 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 (); | |
29 | cleanups = make_cleanup (really_free_pendings, NULL); | |
30 | cust = start_symtab (...); | |
31 | ... read debug info ... | |
32 | cust = end_symtab (...); | |
33 | do_cleanups (cleanups); | |
34 | ||
35 | The compunit symtab pointer ("cust") is returned from both start_symtab | |
36 | and end_symtab to simplify the debug info readers. | |
37 | ||
38 | There are minor variations on this, e.g., dwarf2read.c splits end_symtab | |
39 | into two calls: end_symtab_get_static_block, end_symtab_from_static_block, | |
40 | but all debug info readers follow this basic flow. | |
41 | ||
42 | Reading DWARF Type Units is another variation: | |
43 | ||
44 | buildsym_init (); | |
45 | cleanups = make_cleanup (really_free_pendings, NULL); | |
46 | cust = start_symtab (...); | |
47 | ... read debug info ... | |
48 | cust = end_expandable_symtab (...); | |
49 | do_cleanups (cleanups); | |
50 | ||
51 | And then reading subsequent Type Units within the containing "Comp Unit" | |
52 | will use a second flow: | |
53 | ||
54 | buildsym_init (); | |
55 | cleanups = make_cleanup (really_free_pendings, NULL); | |
56 | cust = restart_symtab (...); | |
57 | ... read debug info ... | |
58 | cust = augment_type_symtab (...); | |
59 | do_cleanups (cleanups); | |
60 | ||
61 | dbxread.c and xcoffread.c use another variation: | |
62 | ||
63 | buildsym_init (); | |
64 | cleanups = make_cleanup (really_free_pendings, NULL); | |
65 | cust = start_symtab (...); | |
66 | ... read debug info ... | |
67 | cust = end_symtab (...); | |
68 | ... start_symtab + read + end_symtab repeated ... | |
69 | do_cleanups (cleanups); | |
70 | */ | |
c906108c SS |
71 | |
72 | #include "defs.h" | |
73 | #include "bfd.h" | |
04ea0df1 | 74 | #include "gdb_obstack.h" |
c906108c | 75 | #include "symtab.h" |
72367fb4 | 76 | #include "symfile.h" |
c906108c SS |
77 | #include "objfiles.h" |
78 | #include "gdbtypes.h" | |
79 | #include "complaints.h" | |
4a64f543 | 80 | #include "expression.h" /* For "enum exp_opcode" used by... */ |
357e46e7 | 81 | #include "bcache.h" |
4a64f543 | 82 | #include "filenames.h" /* For DOSish file names. */ |
99d9066e | 83 | #include "macrotab.h" |
261397f8 | 84 | #include "demangle.h" /* Needed by SYMBOL_INIT_DEMANGLED_NAME. */ |
fe898f56 | 85 | #include "block.h" |
9219021c | 86 | #include "cp-support.h" |
de4f826b | 87 | #include "dictionary.h" |
801e3a5b | 88 | #include "addrmap.h" |
b05628f0 | 89 | #include <algorithm> |
9219021c | 90 | |
c906108c | 91 | /* Ask buildsym.h to define the vars it normally declares `extern'. */ |
c5aa993b JM |
92 | #define EXTERN |
93 | /**/ | |
4a64f543 | 94 | #include "buildsym.h" /* Our own declarations. */ |
c906108c SS |
95 | #undef EXTERN |
96 | ||
0a0edcd5 | 97 | /* For cleanup_undefined_stabs_types and finish_global_stabs (somewhat |
c906108c SS |
98 | questionable--see comment where we call them). */ |
99 | ||
100 | #include "stabsread.h" | |
101 | ||
43f3e411 DE |
102 | /* Buildsym's counterpart to struct compunit_symtab. |
103 | TODO(dje): Move all related global state into here. */ | |
4d663531 | 104 | |
43f3e411 DE |
105 | struct buildsym_compunit |
106 | { | |
107 | /* The objfile we're reading debug info from. */ | |
108 | struct objfile *objfile; | |
109 | ||
110 | /* List of subfiles (source files). | |
111 | Files are added to the front of the list. | |
112 | This is important mostly for the language determination hacks we use, | |
113 | which iterate over previously added files. */ | |
114 | struct subfile *subfiles; | |
115 | ||
116 | /* The subfile of the main source file. */ | |
117 | struct subfile *main_subfile; | |
4d663531 | 118 | |
43f3e411 DE |
119 | /* E.g., DW_AT_comp_dir if DWARF. Space for this is malloc'd. */ |
120 | char *comp_dir; | |
4d663531 | 121 | |
43f3e411 DE |
122 | /* Space for this is not malloc'd, and is assumed to have at least |
123 | the same lifetime as objfile. */ | |
124 | const char *producer; | |
4d663531 | 125 | |
43f3e411 DE |
126 | /* Space for this is not malloc'd, and is assumed to have at least |
127 | the same lifetime as objfile. */ | |
128 | const char *debugformat; | |
94d09e04 | 129 | |
43f3e411 DE |
130 | /* The compunit we are building. */ |
131 | struct compunit_symtab *compunit_symtab; | |
132 | }; | |
94d09e04 | 133 | |
43f3e411 DE |
134 | /* The work-in-progress of the compunit we are building. |
135 | This is created first, before any subfiles by start_symtab. */ | |
7bab9b58 | 136 | |
43f3e411 | 137 | static struct buildsym_compunit *buildsym_compunit; |
7bab9b58 | 138 | |
c906108c SS |
139 | /* List of free `struct pending' structures for reuse. */ |
140 | ||
141 | static struct pending *free_pendings; | |
142 | ||
143 | /* Non-zero if symtab has line number info. This prevents an | |
144 | otherwise empty symtab from being tossed. */ | |
145 | ||
146 | static int have_line_numbers; | |
801e3a5b JB |
147 | |
148 | /* The mutable address map for the compilation unit whose symbols | |
149 | we're currently reading. The symtabs' shared blockvector will | |
150 | point to a fixed copy of this. */ | |
151 | static struct addrmap *pending_addrmap; | |
152 | ||
153 | /* The obstack on which we allocate pending_addrmap. | |
154 | If pending_addrmap is NULL, this is uninitialized; otherwise, it is | |
155 | initialized (and holds pending_addrmap). */ | |
156 | static struct obstack pending_addrmap_obstack; | |
157 | ||
158 | /* Non-zero if we recorded any ranges in the addrmap that are | |
159 | different from those in the blockvector already. We set this to | |
160 | zero when we start processing a symfile, and if it's still zero at | |
161 | the end, then we just toss the addrmap. */ | |
162 | static int pending_addrmap_interesting; | |
163 | ||
93eed41f TT |
164 | /* An obstack used for allocating pending blocks. */ |
165 | ||
166 | static struct obstack pending_block_obstack; | |
167 | ||
168 | /* List of blocks already made (lexical contexts already closed). | |
169 | This is used at the end to make the blockvector. */ | |
170 | ||
171 | struct pending_block | |
172 | { | |
173 | struct pending_block *next; | |
174 | struct block *block; | |
175 | }; | |
176 | ||
177 | /* Pointer to the head of a linked list of symbol blocks which have | |
178 | already been finalized (lexical contexts already closed) and which | |
179 | are just waiting to be built into a blockvector when finalizing the | |
180 | associated symtab. */ | |
181 | ||
182 | static struct pending_block *pending_blocks; | |
fc474241 DE |
183 | |
184 | struct subfile_stack | |
185 | { | |
186 | struct subfile_stack *next; | |
187 | char *name; | |
188 | }; | |
189 | ||
190 | static struct subfile_stack *subfile_stack; | |
191 | ||
192 | /* The macro table for the compilation unit whose symbols we're | |
43f3e411 | 193 | currently reading. */ |
fc474241 DE |
194 | static struct macro_table *pending_macros; |
195 | ||
0ab9ce85 DE |
196 | static void free_buildsym_compunit (void); |
197 | ||
c906108c | 198 | static int compare_line_numbers (const void *ln1p, const void *ln2p); |
0b49e518 TT |
199 | |
200 | static void record_pending_block (struct objfile *objfile, | |
201 | struct block *block, | |
202 | struct pending_block *opblock); | |
c906108c SS |
203 | |
204 | /* Initial sizes of data structures. These are realloc'd larger if | |
205 | needed, and realloc'd down to the size actually used, when | |
206 | completed. */ | |
207 | ||
208 | #define INITIAL_CONTEXT_STACK_SIZE 10 | |
209 | #define INITIAL_LINE_VECTOR_LENGTH 1000 | |
210 | \f | |
211 | ||
4a64f543 | 212 | /* Maintain the lists of symbols and blocks. */ |
c906108c | 213 | |
93bf33fd | 214 | /* Add a symbol to one of the lists of symbols. */ |
c906108c SS |
215 | |
216 | void | |
217 | add_symbol_to_list (struct symbol *symbol, struct pending **listhead) | |
218 | { | |
52f0bd74 | 219 | struct pending *link; |
c906108c SS |
220 | |
221 | /* If this is an alias for another symbol, don't add it. */ | |
222 | if (symbol->ginfo.name && symbol->ginfo.name[0] == '#') | |
223 | return; | |
224 | ||
4a64f543 | 225 | /* We keep PENDINGSIZE symbols in each link of the list. If we |
c906108c SS |
226 | don't have a link with room in it, add a new link. */ |
227 | if (*listhead == NULL || (*listhead)->nsyms == PENDINGSIZE) | |
228 | { | |
229 | if (free_pendings) | |
230 | { | |
231 | link = free_pendings; | |
232 | free_pendings = link->next; | |
233 | } | |
234 | else | |
235 | { | |
8d749320 | 236 | link = XNEW (struct pending); |
c906108c SS |
237 | } |
238 | ||
239 | link->next = *listhead; | |
240 | *listhead = link; | |
241 | link->nsyms = 0; | |
242 | } | |
243 | ||
244 | (*listhead)->symbol[(*listhead)->nsyms++] = symbol; | |
245 | } | |
246 | ||
247 | /* Find a symbol named NAME on a LIST. NAME need not be | |
248 | '\0'-terminated; LENGTH is the length of the name. */ | |
249 | ||
250 | struct symbol * | |
251 | find_symbol_in_list (struct pending *list, char *name, int length) | |
252 | { | |
253 | int j; | |
0d5cff50 | 254 | const char *pp; |
c906108c SS |
255 | |
256 | while (list != NULL) | |
257 | { | |
258 | for (j = list->nsyms; --j >= 0;) | |
259 | { | |
3567439c | 260 | pp = SYMBOL_LINKAGE_NAME (list->symbol[j]); |
5aafa1cc PM |
261 | if (*pp == *name && strncmp (pp, name, length) == 0 |
262 | && pp[length] == '\0') | |
c906108c SS |
263 | { |
264 | return (list->symbol[j]); | |
265 | } | |
266 | } | |
267 | list = list->next; | |
268 | } | |
269 | return (NULL); | |
270 | } | |
271 | ||
0ab9ce85 DE |
272 | /* At end of reading syms, or in case of quit, ensure everything associated |
273 | with building symtabs is freed. This is intended to be registered as a | |
274 | cleanup before doing psymtab->symtab expansion. | |
275 | ||
276 | N.B. This is *not* intended to be used when building psymtabs. Some debug | |
277 | info readers call this anyway, which is harmless if confusing. */ | |
c906108c | 278 | |
c906108c | 279 | void |
bde58177 | 280 | really_free_pendings (void *dummy) |
c906108c SS |
281 | { |
282 | struct pending *next, *next1; | |
283 | ||
284 | for (next = free_pendings; next; next = next1) | |
285 | { | |
286 | next1 = next->next; | |
b8c9b27d | 287 | xfree ((void *) next); |
c906108c SS |
288 | } |
289 | free_pendings = NULL; | |
290 | ||
291 | free_pending_blocks (); | |
292 | ||
293 | for (next = file_symbols; next != NULL; next = next1) | |
294 | { | |
295 | next1 = next->next; | |
b8c9b27d | 296 | xfree ((void *) next); |
c906108c SS |
297 | } |
298 | file_symbols = NULL; | |
299 | ||
300 | for (next = global_symbols; next != NULL; next = next1) | |
301 | { | |
302 | next1 = next->next; | |
b8c9b27d | 303 | xfree ((void *) next); |
c906108c SS |
304 | } |
305 | global_symbols = NULL; | |
99d9066e JB |
306 | |
307 | if (pending_macros) | |
308 | free_macro_table (pending_macros); | |
0ab9ce85 | 309 | pending_macros = NULL; |
801e3a5b JB |
310 | |
311 | if (pending_addrmap) | |
0ab9ce85 DE |
312 | obstack_free (&pending_addrmap_obstack, NULL); |
313 | pending_addrmap = NULL; | |
314 | ||
315 | free_buildsym_compunit (); | |
c906108c SS |
316 | } |
317 | ||
4a64f543 | 318 | /* This function is called to discard any pending blocks. */ |
c906108c SS |
319 | |
320 | void | |
321 | free_pending_blocks (void) | |
322 | { | |
93eed41f TT |
323 | if (pending_blocks != NULL) |
324 | { | |
325 | obstack_free (&pending_block_obstack, NULL); | |
326 | pending_blocks = NULL; | |
327 | } | |
c906108c SS |
328 | } |
329 | ||
330 | /* Take one of the lists of symbols and make a block from it. Keep | |
331 | the order the symbols have in the list (reversed from the input | |
332 | file). Put the block on the list of pending blocks. */ | |
333 | ||
84a146c9 | 334 | static struct block * |
63e43d3a PMR |
335 | finish_block_internal (struct symbol *symbol, |
336 | struct pending **listhead, | |
84a146c9 | 337 | struct pending_block *old_blocks, |
63e43d3a | 338 | const struct dynamic_prop *static_link, |
84a146c9 | 339 | CORE_ADDR start, CORE_ADDR end, |
6d30eef8 | 340 | int is_global, int expandable) |
c906108c | 341 | { |
43f3e411 | 342 | struct objfile *objfile = buildsym_compunit->objfile; |
5af949e3 | 343 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 AC |
344 | struct pending *next, *next1; |
345 | struct block *block; | |
346 | struct pending_block *pblock; | |
c906108c | 347 | struct pending_block *opblock; |
c906108c | 348 | |
84a146c9 TT |
349 | block = (is_global |
350 | ? allocate_global_block (&objfile->objfile_obstack) | |
351 | : allocate_block (&objfile->objfile_obstack)); | |
c906108c | 352 | |
261397f8 DJ |
353 | if (symbol) |
354 | { | |
4a146b47 | 355 | BLOCK_DICT (block) = dict_create_linear (&objfile->objfile_obstack, |
de4f826b | 356 | *listhead); |
261397f8 DJ |
357 | } |
358 | else | |
c906108c | 359 | { |
6d30eef8 DE |
360 | if (expandable) |
361 | { | |
362 | BLOCK_DICT (block) = dict_create_hashed_expandable (); | |
363 | dict_add_pending (BLOCK_DICT (block), *listhead); | |
364 | } | |
365 | else | |
366 | { | |
367 | BLOCK_DICT (block) = | |
368 | dict_create_hashed (&objfile->objfile_obstack, *listhead); | |
369 | } | |
c906108c SS |
370 | } |
371 | ||
372 | BLOCK_START (block) = start; | |
373 | BLOCK_END (block) = end; | |
c906108c | 374 | |
c906108c SS |
375 | /* Put the block in as the value of the symbol that names it. */ |
376 | ||
377 | if (symbol) | |
378 | { | |
379 | struct type *ftype = SYMBOL_TYPE (symbol); | |
de4f826b | 380 | struct dict_iterator iter; |
c906108c SS |
381 | SYMBOL_BLOCK_VALUE (symbol) = block; |
382 | BLOCK_FUNCTION (block) = symbol; | |
383 | ||
384 | if (TYPE_NFIELDS (ftype) <= 0) | |
385 | { | |
386 | /* No parameter type information is recorded with the | |
387 | function's type. Set that from the type of the | |
4a64f543 | 388 | parameter symbols. */ |
c906108c SS |
389 | int nparams = 0, iparams; |
390 | struct symbol *sym; | |
8157b174 TT |
391 | |
392 | /* Here we want to directly access the dictionary, because | |
393 | we haven't fully initialized the block yet. */ | |
394 | ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym) | |
c906108c | 395 | { |
2a2d4dc3 AS |
396 | if (SYMBOL_IS_ARGUMENT (sym)) |
397 | nparams++; | |
c906108c SS |
398 | } |
399 | if (nparams > 0) | |
400 | { | |
401 | TYPE_NFIELDS (ftype) = nparams; | |
402 | TYPE_FIELDS (ftype) = (struct field *) | |
403 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
404 | ||
de4f826b | 405 | iparams = 0; |
8157b174 TT |
406 | /* Here we want to directly access the dictionary, because |
407 | we haven't fully initialized the block yet. */ | |
408 | ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym) | |
c906108c | 409 | { |
de4f826b DC |
410 | if (iparams == nparams) |
411 | break; | |
412 | ||
2a2d4dc3 | 413 | if (SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 414 | { |
c906108c | 415 | TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym); |
8176bb6d | 416 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c | 417 | iparams++; |
c906108c SS |
418 | } |
419 | } | |
420 | } | |
421 | } | |
422 | } | |
423 | else | |
424 | { | |
425 | BLOCK_FUNCTION (block) = NULL; | |
426 | } | |
427 | ||
63e43d3a PMR |
428 | if (static_link != NULL) |
429 | objfile_register_static_link (objfile, block, static_link); | |
430 | ||
c906108c SS |
431 | /* Now "free" the links of the list, and empty the list. */ |
432 | ||
433 | for (next = *listhead; next; next = next1) | |
434 | { | |
435 | next1 = next->next; | |
436 | next->next = free_pendings; | |
437 | free_pendings = next; | |
438 | } | |
439 | *listhead = NULL; | |
440 | ||
c906108c | 441 | /* Check to be sure that the blocks have an end address that is |
4a64f543 | 442 | greater than starting address. */ |
c906108c SS |
443 | |
444 | if (BLOCK_END (block) < BLOCK_START (block)) | |
445 | { | |
446 | if (symbol) | |
447 | { | |
23136709 | 448 | complaint (&symfile_complaints, |
3e43a32a MS |
449 | _("block end address less than block " |
450 | "start address in %s (patched it)"), | |
de5ad195 | 451 | SYMBOL_PRINT_NAME (symbol)); |
c906108c SS |
452 | } |
453 | else | |
454 | { | |
23136709 | 455 | complaint (&symfile_complaints, |
3e43a32a MS |
456 | _("block end address %s less than block " |
457 | "start address %s (patched it)"), | |
5af949e3 UW |
458 | paddress (gdbarch, BLOCK_END (block)), |
459 | paddress (gdbarch, BLOCK_START (block))); | |
c906108c | 460 | } |
4a64f543 | 461 | /* Better than nothing. */ |
c906108c SS |
462 | BLOCK_END (block) = BLOCK_START (block); |
463 | } | |
c906108c SS |
464 | |
465 | /* Install this block as the superblock of all blocks made since the | |
466 | start of this scope that don't have superblocks yet. */ | |
467 | ||
468 | opblock = NULL; | |
c0219d42 MS |
469 | for (pblock = pending_blocks; |
470 | pblock && pblock != old_blocks; | |
471 | pblock = pblock->next) | |
c906108c SS |
472 | { |
473 | if (BLOCK_SUPERBLOCK (pblock->block) == NULL) | |
474 | { | |
c906108c | 475 | /* Check to be sure the blocks are nested as we receive |
4a64f543 | 476 | them. If the compiler/assembler/linker work, this just |
14711c82 DJ |
477 | burns a small amount of time. |
478 | ||
479 | Skip blocks which correspond to a function; they're not | |
480 | physically nested inside this other blocks, only | |
481 | lexically nested. */ | |
482 | if (BLOCK_FUNCTION (pblock->block) == NULL | |
483 | && (BLOCK_START (pblock->block) < BLOCK_START (block) | |
484 | || BLOCK_END (pblock->block) > BLOCK_END (block))) | |
c906108c SS |
485 | { |
486 | if (symbol) | |
487 | { | |
23136709 | 488 | complaint (&symfile_complaints, |
3d263c1d | 489 | _("inner block not inside outer block in %s"), |
de5ad195 | 490 | SYMBOL_PRINT_NAME (symbol)); |
c906108c SS |
491 | } |
492 | else | |
493 | { | |
23136709 | 494 | complaint (&symfile_complaints, |
3e43a32a MS |
495 | _("inner block (%s-%s) not " |
496 | "inside outer block (%s-%s)"), | |
5af949e3 UW |
497 | paddress (gdbarch, BLOCK_START (pblock->block)), |
498 | paddress (gdbarch, BLOCK_END (pblock->block)), | |
499 | paddress (gdbarch, BLOCK_START (block)), | |
500 | paddress (gdbarch, BLOCK_END (block))); | |
c906108c SS |
501 | } |
502 | if (BLOCK_START (pblock->block) < BLOCK_START (block)) | |
503 | BLOCK_START (pblock->block) = BLOCK_START (block); | |
504 | if (BLOCK_END (pblock->block) > BLOCK_END (block)) | |
505 | BLOCK_END (pblock->block) = BLOCK_END (block); | |
506 | } | |
c906108c SS |
507 | BLOCK_SUPERBLOCK (pblock->block) = block; |
508 | } | |
509 | opblock = pblock; | |
510 | } | |
511 | ||
22cee43f PMR |
512 | block_set_using (block, |
513 | (is_global | |
514 | ? global_using_directives | |
515 | : local_using_directives), | |
516 | &objfile->objfile_obstack); | |
517 | if (is_global) | |
518 | global_using_directives = NULL; | |
519 | else | |
520 | local_using_directives = NULL; | |
27aa8d6a | 521 | |
c906108c | 522 | record_pending_block (objfile, block, opblock); |
801e3a5b JB |
523 | |
524 | return block; | |
c906108c SS |
525 | } |
526 | ||
84a146c9 | 527 | struct block * |
63e43d3a PMR |
528 | finish_block (struct symbol *symbol, |
529 | struct pending **listhead, | |
84a146c9 | 530 | struct pending_block *old_blocks, |
63e43d3a | 531 | const struct dynamic_prop *static_link, |
4d663531 | 532 | CORE_ADDR start, CORE_ADDR end) |
84a146c9 | 533 | { |
63e43d3a | 534 | return finish_block_internal (symbol, listhead, old_blocks, static_link, |
4d663531 | 535 | start, end, 0, 0); |
84a146c9 | 536 | } |
de4f826b | 537 | |
c906108c SS |
538 | /* Record BLOCK on the list of all blocks in the file. Put it after |
539 | OPBLOCK, or at the beginning if opblock is NULL. This puts the | |
540 | block in the list after all its subblocks. | |
541 | ||
4a146b47 | 542 | Allocate the pending block struct in the objfile_obstack to save |
c906108c SS |
543 | time. This wastes a little space. FIXME: Is it worth it? */ |
544 | ||
0b49e518 | 545 | static void |
c906108c SS |
546 | record_pending_block (struct objfile *objfile, struct block *block, |
547 | struct pending_block *opblock) | |
548 | { | |
52f0bd74 | 549 | struct pending_block *pblock; |
c906108c | 550 | |
93eed41f TT |
551 | if (pending_blocks == NULL) |
552 | obstack_init (&pending_block_obstack); | |
553 | ||
8d749320 | 554 | pblock = XOBNEW (&pending_block_obstack, struct pending_block); |
c906108c SS |
555 | pblock->block = block; |
556 | if (opblock) | |
557 | { | |
558 | pblock->next = opblock->next; | |
559 | opblock->next = pblock; | |
560 | } | |
561 | else | |
562 | { | |
563 | pblock->next = pending_blocks; | |
564 | pending_blocks = pblock; | |
565 | } | |
566 | } | |
567 | ||
801e3a5b JB |
568 | |
569 | /* Record that the range of addresses from START to END_INCLUSIVE | |
570 | (inclusive, like it says) belongs to BLOCK. BLOCK's start and end | |
571 | addresses must be set already. You must apply this function to all | |
572 | BLOCK's children before applying it to BLOCK. | |
573 | ||
574 | If a call to this function complicates the picture beyond that | |
575 | already provided by BLOCK_START and BLOCK_END, then we create an | |
576 | address map for the block. */ | |
577 | void | |
578 | record_block_range (struct block *block, | |
579 | CORE_ADDR start, CORE_ADDR end_inclusive) | |
580 | { | |
581 | /* If this is any different from the range recorded in the block's | |
582 | own BLOCK_START and BLOCK_END, then note that the address map has | |
583 | become interesting. Note that even if this block doesn't have | |
584 | any "interesting" ranges, some later block might, so we still | |
585 | need to record this block in the addrmap. */ | |
586 | if (start != BLOCK_START (block) | |
587 | || end_inclusive + 1 != BLOCK_END (block)) | |
588 | pending_addrmap_interesting = 1; | |
589 | ||
590 | if (! pending_addrmap) | |
591 | { | |
592 | obstack_init (&pending_addrmap_obstack); | |
593 | pending_addrmap = addrmap_create_mutable (&pending_addrmap_obstack); | |
594 | } | |
595 | ||
596 | addrmap_set_empty (pending_addrmap, start, end_inclusive, block); | |
597 | } | |
598 | ||
822e978b | 599 | static struct blockvector * |
43f3e411 | 600 | make_blockvector (void) |
c906108c | 601 | { |
43f3e411 | 602 | struct objfile *objfile = buildsym_compunit->objfile; |
52f0bd74 AC |
603 | struct pending_block *next; |
604 | struct blockvector *blockvector; | |
605 | int i; | |
c906108c SS |
606 | |
607 | /* Count the length of the list of blocks. */ | |
608 | ||
609 | for (next = pending_blocks, i = 0; next; next = next->next, i++) | |
610 | {; | |
611 | } | |
612 | ||
613 | blockvector = (struct blockvector *) | |
4a146b47 | 614 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
615 | (sizeof (struct blockvector) |
616 | + (i - 1) * sizeof (struct block *))); | |
617 | ||
4a64f543 | 618 | /* Copy the blocks into the blockvector. This is done in reverse |
c906108c | 619 | order, which happens to put the blocks into the proper order |
4a64f543 | 620 | (ascending starting address). finish_block has hair to insert |
c906108c SS |
621 | each block into the list after its subblocks in order to make |
622 | sure this is true. */ | |
623 | ||
624 | BLOCKVECTOR_NBLOCKS (blockvector) = i; | |
625 | for (next = pending_blocks; next; next = next->next) | |
626 | { | |
627 | BLOCKVECTOR_BLOCK (blockvector, --i) = next->block; | |
628 | } | |
629 | ||
89ba75b1 | 630 | free_pending_blocks (); |
c906108c | 631 | |
801e3a5b JB |
632 | /* If we needed an address map for this symtab, record it in the |
633 | blockvector. */ | |
634 | if (pending_addrmap && pending_addrmap_interesting) | |
635 | BLOCKVECTOR_MAP (blockvector) | |
636 | = addrmap_create_fixed (pending_addrmap, &objfile->objfile_obstack); | |
637 | else | |
638 | BLOCKVECTOR_MAP (blockvector) = 0; | |
4aad0dfc | 639 | |
c906108c | 640 | /* Some compilers output blocks in the wrong order, but we depend on |
4a64f543 | 641 | their being in the right order so we can binary search. Check the |
4aad0dfc DE |
642 | order and moan about it. |
643 | Note: Remember that the first two blocks are the global and static | |
644 | blocks. We could special case that fact and begin checking at block 2. | |
645 | To avoid making that assumption we do not. */ | |
c906108c SS |
646 | if (BLOCKVECTOR_NBLOCKS (blockvector) > 1) |
647 | { | |
648 | for (i = 1; i < BLOCKVECTOR_NBLOCKS (blockvector); i++) | |
649 | { | |
650 | if (BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i - 1)) | |
651 | > BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i))) | |
652 | { | |
59527da0 JB |
653 | CORE_ADDR start |
654 | = BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i)); | |
c906108c | 655 | |
3d263c1d | 656 | complaint (&symfile_complaints, _("block at %s out of order"), |
bb599908 | 657 | hex_string ((LONGEST) start)); |
c906108c SS |
658 | } |
659 | } | |
660 | } | |
c906108c SS |
661 | |
662 | return (blockvector); | |
663 | } | |
664 | \f | |
665 | /* Start recording information about source code that came from an | |
666 | included (or otherwise merged-in) source file with a different | |
4d663531 | 667 | name. NAME is the name of the file (cannot be NULL). */ |
c906108c SS |
668 | |
669 | void | |
4d663531 | 670 | start_subfile (const char *name) |
c906108c | 671 | { |
43f3e411 | 672 | const char *subfile_dirname; |
52f0bd74 | 673 | struct subfile *subfile; |
c906108c | 674 | |
43f3e411 DE |
675 | gdb_assert (buildsym_compunit != NULL); |
676 | ||
677 | subfile_dirname = buildsym_compunit->comp_dir; | |
c906108c | 678 | |
43f3e411 DE |
679 | /* See if this subfile is already registered. */ |
680 | ||
681 | for (subfile = buildsym_compunit->subfiles; subfile; subfile = subfile->next) | |
c906108c | 682 | { |
84ba0adf DJ |
683 | char *subfile_name; |
684 | ||
685 | /* If NAME is an absolute path, and this subfile is not, then | |
686 | attempt to create an absolute path to compare. */ | |
687 | if (IS_ABSOLUTE_PATH (name) | |
688 | && !IS_ABSOLUTE_PATH (subfile->name) | |
43f3e411 DE |
689 | && subfile_dirname != NULL) |
690 | subfile_name = concat (subfile_dirname, SLASH_STRING, | |
6eb7ee03 | 691 | subfile->name, (char *) NULL); |
84ba0adf DJ |
692 | else |
693 | subfile_name = subfile->name; | |
694 | ||
695 | if (FILENAME_CMP (subfile_name, name) == 0) | |
c906108c SS |
696 | { |
697 | current_subfile = subfile; | |
84ba0adf DJ |
698 | if (subfile_name != subfile->name) |
699 | xfree (subfile_name); | |
c906108c SS |
700 | return; |
701 | } | |
84ba0adf DJ |
702 | if (subfile_name != subfile->name) |
703 | xfree (subfile_name); | |
c906108c SS |
704 | } |
705 | ||
43f3e411 | 706 | /* This subfile is not known. Add an entry for it. */ |
c906108c | 707 | |
8d749320 | 708 | subfile = XNEW (struct subfile); |
43f3e411 DE |
709 | memset (subfile, 0, sizeof (struct subfile)); |
710 | subfile->buildsym_compunit = buildsym_compunit; | |
711 | ||
712 | subfile->next = buildsym_compunit->subfiles; | |
713 | buildsym_compunit->subfiles = subfile; | |
714 | ||
c906108c SS |
715 | current_subfile = subfile; |
716 | ||
b74db436 | 717 | subfile->name = xstrdup (name); |
c906108c SS |
718 | |
719 | /* Initialize line-number recording for this subfile. */ | |
720 | subfile->line_vector = NULL; | |
721 | ||
722 | /* Default the source language to whatever can be deduced from the | |
723 | filename. If nothing can be deduced (such as for a C/C++ include | |
724 | file with a ".h" extension), then inherit whatever language the | |
725 | previous subfile had. This kludgery is necessary because there | |
726 | is no standard way in some object formats to record the source | |
727 | language. Also, when symtabs are allocated we try to deduce a | |
728 | language then as well, but it is too late for us to use that | |
729 | information while reading symbols, since symtabs aren't allocated | |
730 | until after all the symbols have been processed for a given | |
4a64f543 | 731 | source file. */ |
c906108c SS |
732 | |
733 | subfile->language = deduce_language_from_filename (subfile->name); | |
5aafa1cc PM |
734 | if (subfile->language == language_unknown |
735 | && subfile->next != NULL) | |
c906108c SS |
736 | { |
737 | subfile->language = subfile->next->language; | |
738 | } | |
739 | ||
25caa7a8 | 740 | /* If the filename of this subfile ends in .C, then change the |
c906108c | 741 | language of any pending subfiles from C to C++. We also accept |
25caa7a8 | 742 | any other C++ suffixes accepted by deduce_language_from_filename. */ |
c906108c SS |
743 | /* Likewise for f2c. */ |
744 | ||
745 | if (subfile->name) | |
746 | { | |
747 | struct subfile *s; | |
748 | enum language sublang = deduce_language_from_filename (subfile->name); | |
749 | ||
750 | if (sublang == language_cplus || sublang == language_fortran) | |
43f3e411 | 751 | for (s = buildsym_compunit->subfiles; s != NULL; s = s->next) |
c906108c SS |
752 | if (s->language == language_c) |
753 | s->language = sublang; | |
754 | } | |
755 | ||
756 | /* And patch up this file if necessary. */ | |
757 | if (subfile->language == language_c | |
758 | && subfile->next != NULL | |
759 | && (subfile->next->language == language_cplus | |
760 | || subfile->next->language == language_fortran)) | |
761 | { | |
762 | subfile->language = subfile->next->language; | |
763 | } | |
764 | } | |
765 | ||
43f3e411 DE |
766 | /* Start recording information about a primary source file (IOW, not an |
767 | included source file). | |
768 | COMP_DIR is the directory in which the compilation unit was compiled | |
769 | (or NULL if not known). */ | |
770 | ||
771 | static struct buildsym_compunit * | |
772 | start_buildsym_compunit (struct objfile *objfile, const char *comp_dir) | |
773 | { | |
774 | struct buildsym_compunit *bscu; | |
775 | ||
8d749320 | 776 | bscu = XNEW (struct buildsym_compunit); |
43f3e411 DE |
777 | memset (bscu, 0, sizeof (struct buildsym_compunit)); |
778 | ||
779 | bscu->objfile = objfile; | |
780 | bscu->comp_dir = (comp_dir == NULL) ? NULL : xstrdup (comp_dir); | |
781 | ||
782 | /* Initialize the debug format string to NULL. We may supply it | |
783 | later via a call to record_debugformat. */ | |
784 | bscu->debugformat = NULL; | |
785 | ||
786 | /* Similarly for the producer. */ | |
787 | bscu->producer = NULL; | |
788 | ||
789 | return bscu; | |
790 | } | |
791 | ||
792 | /* Delete the buildsym compunit. */ | |
7bab9b58 DE |
793 | |
794 | static void | |
43f3e411 | 795 | free_buildsym_compunit (void) |
7bab9b58 DE |
796 | { |
797 | struct subfile *subfile, *nextsub; | |
798 | ||
43f3e411 DE |
799 | if (buildsym_compunit == NULL) |
800 | return; | |
801 | for (subfile = buildsym_compunit->subfiles; | |
802 | subfile != NULL; | |
803 | subfile = nextsub) | |
7bab9b58 DE |
804 | { |
805 | nextsub = subfile->next; | |
806 | xfree (subfile->name); | |
7bab9b58 DE |
807 | xfree (subfile->line_vector); |
808 | xfree (subfile); | |
809 | } | |
43f3e411 DE |
810 | xfree (buildsym_compunit->comp_dir); |
811 | xfree (buildsym_compunit); | |
812 | buildsym_compunit = NULL; | |
0ab9ce85 | 813 | current_subfile = NULL; |
7bab9b58 DE |
814 | } |
815 | ||
c906108c SS |
816 | /* For stabs readers, the first N_SO symbol is assumed to be the |
817 | source file name, and the subfile struct is initialized using that | |
818 | assumption. If another N_SO symbol is later seen, immediately | |
819 | following the first one, then the first one is assumed to be the | |
820 | directory name and the second one is really the source file name. | |
821 | ||
822 | So we have to patch up the subfile struct by moving the old name | |
823 | value to dirname and remembering the new name. Some sanity | |
824 | checking is performed to ensure that the state of the subfile | |
825 | struct is reasonable and that the old name we are assuming to be a | |
4a64f543 | 826 | directory name actually is (by checking for a trailing '/'). */ |
c906108c SS |
827 | |
828 | void | |
a121b7c1 | 829 | patch_subfile_names (struct subfile *subfile, const char *name) |
c906108c | 830 | { |
43f3e411 DE |
831 | if (subfile != NULL |
832 | && buildsym_compunit->comp_dir == NULL | |
833 | && subfile->name != NULL | |
0ba1096a | 834 | && IS_DIR_SEPARATOR (subfile->name[strlen (subfile->name) - 1])) |
c906108c | 835 | { |
43f3e411 | 836 | buildsym_compunit->comp_dir = subfile->name; |
1b36a34b | 837 | subfile->name = xstrdup (name); |
46212e0b | 838 | set_last_source_file (name); |
c906108c SS |
839 | |
840 | /* Default the source language to whatever can be deduced from | |
841 | the filename. If nothing can be deduced (such as for a C/C++ | |
842 | include file with a ".h" extension), then inherit whatever | |
843 | language the previous subfile had. This kludgery is | |
844 | necessary because there is no standard way in some object | |
845 | formats to record the source language. Also, when symtabs | |
846 | are allocated we try to deduce a language then as well, but | |
847 | it is too late for us to use that information while reading | |
848 | symbols, since symtabs aren't allocated until after all the | |
4a64f543 | 849 | symbols have been processed for a given source file. */ |
c906108c SS |
850 | |
851 | subfile->language = deduce_language_from_filename (subfile->name); | |
5aafa1cc PM |
852 | if (subfile->language == language_unknown |
853 | && subfile->next != NULL) | |
c906108c SS |
854 | { |
855 | subfile->language = subfile->next->language; | |
856 | } | |
857 | } | |
858 | } | |
859 | \f | |
860 | /* Handle the N_BINCL and N_EINCL symbol types that act like N_SOL for | |
861 | switching source files (different subfiles, as we call them) within | |
862 | one object file, but using a stack rather than in an arbitrary | |
863 | order. */ | |
864 | ||
865 | void | |
866 | push_subfile (void) | |
867 | { | |
8d749320 | 868 | struct subfile_stack *tem = XNEW (struct subfile_stack); |
c906108c SS |
869 | |
870 | tem->next = subfile_stack; | |
871 | subfile_stack = tem; | |
872 | if (current_subfile == NULL || current_subfile->name == NULL) | |
873 | { | |
4a64f543 MS |
874 | internal_error (__FILE__, __LINE__, |
875 | _("failed internal consistency check")); | |
c906108c SS |
876 | } |
877 | tem->name = current_subfile->name; | |
878 | } | |
879 | ||
880 | char * | |
881 | pop_subfile (void) | |
882 | { | |
52f0bd74 AC |
883 | char *name; |
884 | struct subfile_stack *link = subfile_stack; | |
c906108c SS |
885 | |
886 | if (link == NULL) | |
887 | { | |
3e43a32a MS |
888 | internal_error (__FILE__, __LINE__, |
889 | _("failed internal consistency check")); | |
c906108c SS |
890 | } |
891 | name = link->name; | |
892 | subfile_stack = link->next; | |
b8c9b27d | 893 | xfree ((void *) link); |
c906108c SS |
894 | return (name); |
895 | } | |
896 | \f | |
897 | /* Add a linetable entry for line number LINE and address PC to the | |
898 | line vector for SUBFILE. */ | |
899 | ||
900 | void | |
aa1ee363 | 901 | record_line (struct subfile *subfile, int line, CORE_ADDR pc) |
c906108c SS |
902 | { |
903 | struct linetable_entry *e; | |
c906108c | 904 | |
cc59ec59 | 905 | /* Ignore the dummy line number in libg.o */ |
c906108c SS |
906 | if (line == 0xffff) |
907 | { | |
908 | return; | |
909 | } | |
910 | ||
911 | /* Make sure line vector exists and is big enough. */ | |
912 | if (!subfile->line_vector) | |
913 | { | |
914 | subfile->line_vector_length = INITIAL_LINE_VECTOR_LENGTH; | |
915 | subfile->line_vector = (struct linetable *) | |
916 | xmalloc (sizeof (struct linetable) | |
c5aa993b | 917 | + subfile->line_vector_length * sizeof (struct linetable_entry)); |
c906108c SS |
918 | subfile->line_vector->nitems = 0; |
919 | have_line_numbers = 1; | |
920 | } | |
921 | ||
922 | if (subfile->line_vector->nitems + 1 >= subfile->line_vector_length) | |
923 | { | |
924 | subfile->line_vector_length *= 2; | |
925 | subfile->line_vector = (struct linetable *) | |
926 | xrealloc ((char *) subfile->line_vector, | |
927 | (sizeof (struct linetable) | |
928 | + (subfile->line_vector_length | |
929 | * sizeof (struct linetable_entry)))); | |
930 | } | |
931 | ||
607ae575 DJ |
932 | /* Normally, we treat lines as unsorted. But the end of sequence |
933 | marker is special. We sort line markers at the same PC by line | |
934 | number, so end of sequence markers (which have line == 0) appear | |
935 | first. This is right if the marker ends the previous function, | |
936 | and there is no padding before the next function. But it is | |
937 | wrong if the previous line was empty and we are now marking a | |
938 | switch to a different subfile. We must leave the end of sequence | |
939 | marker at the end of this group of lines, not sort the empty line | |
940 | to after the marker. The easiest way to accomplish this is to | |
941 | delete any empty lines from our table, if they are followed by | |
942 | end of sequence markers. All we lose is the ability to set | |
943 | breakpoints at some lines which contain no instructions | |
944 | anyway. */ | |
945 | if (line == 0 && subfile->line_vector->nitems > 0) | |
946 | { | |
947 | e = subfile->line_vector->item + subfile->line_vector->nitems - 1; | |
948 | while (subfile->line_vector->nitems > 0 && e->pc == pc) | |
949 | { | |
950 | e--; | |
951 | subfile->line_vector->nitems--; | |
952 | } | |
953 | } | |
954 | ||
c906108c SS |
955 | e = subfile->line_vector->item + subfile->line_vector->nitems++; |
956 | e->line = line; | |
607ae575 | 957 | e->pc = pc; |
c906108c SS |
958 | } |
959 | ||
960 | /* Needed in order to sort line tables from IBM xcoff files. Sigh! */ | |
961 | ||
962 | static int | |
963 | compare_line_numbers (const void *ln1p, const void *ln2p) | |
964 | { | |
965 | struct linetable_entry *ln1 = (struct linetable_entry *) ln1p; | |
966 | struct linetable_entry *ln2 = (struct linetable_entry *) ln2p; | |
967 | ||
968 | /* Note: this code does not assume that CORE_ADDRs can fit in ints. | |
969 | Please keep it that way. */ | |
970 | if (ln1->pc < ln2->pc) | |
971 | return -1; | |
972 | ||
973 | if (ln1->pc > ln2->pc) | |
974 | return 1; | |
975 | ||
976 | /* If pc equal, sort by line. I'm not sure whether this is optimum | |
977 | behavior (see comment at struct linetable in symtab.h). */ | |
978 | return ln1->line - ln2->line; | |
979 | } | |
980 | \f | |
43f3e411 DE |
981 | /* See buildsym.h. */ |
982 | ||
983 | struct compunit_symtab * | |
984 | buildsym_compunit_symtab (void) | |
985 | { | |
986 | gdb_assert (buildsym_compunit != NULL); | |
987 | ||
988 | return buildsym_compunit->compunit_symtab; | |
989 | } | |
990 | ||
991 | /* See buildsym.h. */ | |
fc474241 DE |
992 | |
993 | struct macro_table * | |
43f3e411 | 994 | get_macro_table (void) |
fc474241 | 995 | { |
43f3e411 DE |
996 | struct objfile *objfile; |
997 | ||
998 | gdb_assert (buildsym_compunit != NULL); | |
999 | ||
1000 | objfile = buildsym_compunit->objfile; | |
4d663531 | 1001 | |
fc474241 | 1002 | if (! pending_macros) |
43f3e411 DE |
1003 | { |
1004 | pending_macros = new_macro_table (&objfile->per_bfd->storage_obstack, | |
1005 | objfile->per_bfd->macro_cache, | |
1006 | buildsym_compunit->compunit_symtab); | |
1007 | } | |
1008 | ||
fc474241 DE |
1009 | return pending_macros; |
1010 | } | |
1011 | \f | |
0ab9ce85 DE |
1012 | /* Init state to prepare for building a symtab. |
1013 | Note: This can't be done in buildsym_init because dbxread.c and xcoffread.c | |
1014 | can call start_symtab+end_symtab multiple times after one call to | |
1015 | buildsym_init. */ | |
1016 | ||
1017 | static void | |
1018 | prepare_for_building (const char *name, CORE_ADDR start_addr) | |
1019 | { | |
1020 | set_last_source_file (name); | |
1021 | last_source_start_addr = start_addr; | |
1022 | ||
1023 | local_symbols = NULL; | |
22cee43f | 1024 | local_using_directives = NULL; |
0ab9ce85 DE |
1025 | within_function = 0; |
1026 | have_line_numbers = 0; | |
1027 | ||
1028 | context_stack_depth = 0; | |
1029 | ||
1030 | /* These should have been reset either by successful completion of building | |
1031 | a symtab, or by the really_free_pendings cleanup. */ | |
1032 | gdb_assert (file_symbols == NULL); | |
1033 | gdb_assert (global_symbols == NULL); | |
22cee43f | 1034 | gdb_assert (global_using_directives == NULL); |
0ab9ce85 DE |
1035 | gdb_assert (pending_macros == NULL); |
1036 | gdb_assert (pending_addrmap == NULL); | |
1037 | gdb_assert (current_subfile == NULL); | |
1038 | } | |
1039 | ||
4d663531 | 1040 | /* Start a new symtab for a new source file in OBJFILE. Called, for example, |
c906108c SS |
1041 | when a stabs symbol of type N_SO is seen, or when a DWARF |
1042 | TAG_compile_unit DIE is seen. It indicates the start of data for | |
0b0287a1 DE |
1043 | one original source file. |
1044 | ||
4d663531 | 1045 | NAME is the name of the file (cannot be NULL). COMP_DIR is the directory in |
0b0287a1 DE |
1046 | which the file was compiled (or NULL if not known). START_ADDR is the |
1047 | lowest address of objects in the file (or 0 if not known). */ | |
c906108c | 1048 | |
43f3e411 | 1049 | struct compunit_symtab * |
4d663531 DE |
1050 | start_symtab (struct objfile *objfile, const char *name, const char *comp_dir, |
1051 | CORE_ADDR start_addr) | |
c906108c | 1052 | { |
0ab9ce85 | 1053 | prepare_for_building (name, start_addr); |
43f3e411 DE |
1054 | |
1055 | buildsym_compunit = start_buildsym_compunit (objfile, comp_dir); | |
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 | { |
0ab9ce85 | 1089 | prepare_for_building (name, start_addr); |
c906108c | 1090 | |
0ab9ce85 DE |
1091 | buildsym_compunit = start_buildsym_compunit (COMPUNIT_OBJFILE (cust), |
1092 | COMPUNIT_DIRNAME (cust)); | |
1093 | buildsym_compunit->compunit_symtab = cust; | |
c906108c SS |
1094 | } |
1095 | ||
4a64f543 MS |
1096 | /* Subroutine of end_symtab to simplify it. Look for a subfile that |
1097 | matches the main source file's basename. If there is only one, and | |
1098 | if the main source file doesn't have any symbol or line number | |
1099 | information, then copy this file's symtab and line_vector to the | |
1100 | main source file's subfile and discard the other subfile. This can | |
1101 | happen because of a compiler bug or from the user playing games | |
1102 | with #line or from things like a distributed build system that | |
43f3e411 DE |
1103 | manipulates the debug info. This can also happen from an innocent |
1104 | symlink in the paths, we don't canonicalize paths here. */ | |
4584e32e DE |
1105 | |
1106 | static void | |
1107 | watch_main_source_file_lossage (void) | |
1108 | { | |
43f3e411 | 1109 | struct subfile *mainsub, *subfile; |
4584e32e | 1110 | |
43f3e411 | 1111 | /* We have to watch for buildsym_compunit == NULL here. It's a quirk of |
7bab9b58 | 1112 | end_symtab, it can return NULL so there may not be a main subfile. */ |
43f3e411 | 1113 | if (buildsym_compunit == NULL) |
7bab9b58 | 1114 | return; |
4584e32e | 1115 | |
43f3e411 DE |
1116 | /* Get the main source file. */ |
1117 | mainsub = buildsym_compunit->main_subfile; | |
1118 | ||
4a64f543 | 1119 | /* If the main source file doesn't have any line number or symbol |
7bab9b58 | 1120 | info, look for an alias in another subfile. */ |
4584e32e | 1121 | |
43f3e411 DE |
1122 | if (mainsub->line_vector == NULL |
1123 | && mainsub->symtab == NULL) | |
4584e32e | 1124 | { |
43f3e411 | 1125 | const char *mainbase = lbasename (mainsub->name); |
4584e32e DE |
1126 | int nr_matches = 0; |
1127 | struct subfile *prevsub; | |
1128 | struct subfile *mainsub_alias = NULL; | |
1129 | struct subfile *prev_mainsub_alias = NULL; | |
1130 | ||
1131 | prevsub = NULL; | |
43f3e411 DE |
1132 | for (subfile = buildsym_compunit->subfiles; |
1133 | subfile != NULL; | |
4584e32e DE |
1134 | subfile = subfile->next) |
1135 | { | |
43f3e411 DE |
1136 | if (subfile == mainsub) |
1137 | continue; | |
0ba1096a | 1138 | if (filename_cmp (lbasename (subfile->name), mainbase) == 0) |
4584e32e DE |
1139 | { |
1140 | ++nr_matches; | |
1141 | mainsub_alias = subfile; | |
1142 | prev_mainsub_alias = prevsub; | |
1143 | } | |
1144 | prevsub = subfile; | |
1145 | } | |
1146 | ||
1147 | if (nr_matches == 1) | |
1148 | { | |
43f3e411 | 1149 | gdb_assert (mainsub_alias != NULL && mainsub_alias != mainsub); |
4584e32e DE |
1150 | |
1151 | /* Found a match for the main source file. | |
1152 | Copy its line_vector and symtab to the main subfile | |
1153 | and then discard it. */ | |
1154 | ||
43f3e411 DE |
1155 | mainsub->line_vector = mainsub_alias->line_vector; |
1156 | mainsub->line_vector_length = mainsub_alias->line_vector_length; | |
1157 | mainsub->symtab = mainsub_alias->symtab; | |
4584e32e DE |
1158 | |
1159 | if (prev_mainsub_alias == NULL) | |
43f3e411 | 1160 | buildsym_compunit->subfiles = mainsub_alias->next; |
4584e32e DE |
1161 | else |
1162 | prev_mainsub_alias->next = mainsub_alias->next; | |
98387a29 | 1163 | xfree (mainsub_alias->name); |
4584e32e DE |
1164 | xfree (mainsub_alias); |
1165 | } | |
1166 | } | |
1167 | } | |
1168 | ||
0ab9ce85 DE |
1169 | /* Reset state after a successful building of a symtab. |
1170 | This exists because dbxread.c and xcoffread.c can call | |
1171 | start_symtab+end_symtab multiple times after one call to buildsym_init, | |
1172 | and before the really_free_pendings cleanup is called. | |
1173 | We keep the free_pendings list around for dbx/xcoff sake. */ | |
6d30eef8 DE |
1174 | |
1175 | static void | |
1176 | reset_symtab_globals (void) | |
1177 | { | |
46212e0b | 1178 | set_last_source_file (NULL); |
0ab9ce85 DE |
1179 | |
1180 | local_symbols = NULL; | |
22cee43f | 1181 | local_using_directives = NULL; |
0ab9ce85 DE |
1182 | file_symbols = NULL; |
1183 | global_symbols = NULL; | |
22cee43f | 1184 | global_using_directives = NULL; |
0ab9ce85 DE |
1185 | |
1186 | /* We don't free pending_macros here because if the symtab was successfully | |
1187 | built then ownership was transferred to the symtab. */ | |
6d30eef8 | 1188 | pending_macros = NULL; |
0ab9ce85 | 1189 | |
6d30eef8 | 1190 | if (pending_addrmap) |
0ab9ce85 DE |
1191 | obstack_free (&pending_addrmap_obstack, NULL); |
1192 | pending_addrmap = NULL; | |
1193 | ||
1194 | free_buildsym_compunit (); | |
6d30eef8 DE |
1195 | } |
1196 | ||
4359dff1 JK |
1197 | /* Implementation of the first part of end_symtab. It allows modifying |
1198 | STATIC_BLOCK before it gets finalized by end_symtab_from_static_block. | |
1199 | If the returned value is NULL there is no blockvector created for | |
1200 | this symtab (you still must call end_symtab_from_static_block). | |
c906108c | 1201 | |
4359dff1 JK |
1202 | END_ADDR is the same as for end_symtab: the address of the end of the |
1203 | file's text. | |
c906108c | 1204 | |
4359dff1 | 1205 | If EXPANDABLE is non-zero the STATIC_BLOCK dictionary is made |
36586728 TT |
1206 | expandable. |
1207 | ||
1208 | If REQUIRED is non-zero, then a symtab is created even if it does | |
1209 | not contain any symbols. */ | |
6d30eef8 | 1210 | |
4359dff1 | 1211 | struct block * |
4d663531 | 1212 | end_symtab_get_static_block (CORE_ADDR end_addr, int expandable, int required) |
c906108c | 1213 | { |
43f3e411 | 1214 | struct objfile *objfile = buildsym_compunit->objfile; |
4d663531 | 1215 | |
c906108c SS |
1216 | /* Finish the lexical context of the last function in the file; pop |
1217 | the context stack. */ | |
1218 | ||
1219 | if (context_stack_depth > 0) | |
1220 | { | |
4359dff1 JK |
1221 | struct context_stack *cstk = pop_context (); |
1222 | ||
c906108c | 1223 | /* Make a block for the local symbols within. */ |
63e43d3a | 1224 | finish_block (cstk->name, &local_symbols, cstk->old_blocks, NULL, |
4d663531 | 1225 | cstk->start_addr, end_addr); |
c906108c SS |
1226 | |
1227 | if (context_stack_depth > 0) | |
1228 | { | |
1229 | /* This is said to happen with SCO. The old coffread.c | |
1230 | code simply emptied the context stack, so we do the | |
1231 | same. FIXME: Find out why it is happening. This is not | |
1232 | believed to happen in most cases (even for coffread.c); | |
1233 | it used to be an abort(). */ | |
23136709 | 1234 | complaint (&symfile_complaints, |
3d263c1d | 1235 | _("Context stack not empty in end_symtab")); |
c906108c SS |
1236 | context_stack_depth = 0; |
1237 | } | |
1238 | } | |
1239 | ||
1240 | /* Reordered executables may have out of order pending blocks; if | |
1241 | OBJF_REORDERED is true, then sort the pending blocks. */ | |
6d30eef8 | 1242 | |
c906108c SS |
1243 | if ((objfile->flags & OBJF_REORDERED) && pending_blocks) |
1244 | { | |
07e7f39f | 1245 | struct pending_block *pb; |
c906108c | 1246 | |
b05628f0 | 1247 | std::vector<block *> barray; |
c906108c | 1248 | |
07e7f39f | 1249 | for (pb = pending_blocks; pb != NULL; pb = pb->next) |
b05628f0 | 1250 | barray.push_back (pb->block); |
07e7f39f | 1251 | |
5033013f UW |
1252 | /* Sort blocks by start address in descending order. Blocks with the |
1253 | same start address must remain in the original order to preserve | |
1254 | inline function caller/callee relationships. */ | |
1255 | std::stable_sort (barray.begin (), barray.end (), | |
1256 | [] (const block *a, const block *b) | |
1257 | { | |
1258 | return BLOCK_START (a) > BLOCK_START (b); | |
1259 | }); | |
07e7f39f | 1260 | |
b05628f0 | 1261 | int i = 0; |
07e7f39f | 1262 | for (pb = pending_blocks; pb != NULL; pb = pb->next) |
b05628f0 | 1263 | pb->block = barray[i++]; |
c906108c SS |
1264 | } |
1265 | ||
1266 | /* Cleanup any undefined types that have been left hanging around | |
1267 | (this needs to be done before the finish_blocks so that | |
1268 | file_symbols is still good). | |
c5aa993b | 1269 | |
0a0edcd5 | 1270 | Both cleanup_undefined_stabs_types and finish_global_stabs are stabs |
c906108c SS |
1271 | specific, but harmless for other symbol readers, since on gdb |
1272 | startup or when finished reading stabs, the state is set so these | |
1273 | are no-ops. FIXME: Is this handled right in case of QUIT? Can | |
1274 | we make this cleaner? */ | |
1275 | ||
0a0edcd5 | 1276 | cleanup_undefined_stabs_types (objfile); |
c906108c SS |
1277 | finish_global_stabs (objfile); |
1278 | ||
36586728 TT |
1279 | if (!required |
1280 | && pending_blocks == NULL | |
c906108c SS |
1281 | && file_symbols == NULL |
1282 | && global_symbols == NULL | |
99d9066e | 1283 | && have_line_numbers == 0 |
22cee43f PMR |
1284 | && pending_macros == NULL |
1285 | && global_using_directives == NULL) | |
c906108c | 1286 | { |
4359dff1 JK |
1287 | /* Ignore symtabs that have no functions with real debugging info. */ |
1288 | return NULL; | |
1289 | } | |
1290 | else | |
1291 | { | |
1292 | /* Define the STATIC_BLOCK. */ | |
63e43d3a | 1293 | return finish_block_internal (NULL, &file_symbols, NULL, NULL, |
4d663531 | 1294 | last_source_start_addr, end_addr, |
4359dff1 JK |
1295 | 0, expandable); |
1296 | } | |
1297 | } | |
1298 | ||
7bab9b58 DE |
1299 | /* Subroutine of end_symtab_from_static_block to simplify it. |
1300 | Handle the "have blockvector" case. | |
1301 | See end_symtab_from_static_block for a description of the arguments. */ | |
1302 | ||
43f3e411 | 1303 | static struct compunit_symtab * |
7bab9b58 | 1304 | end_symtab_with_blockvector (struct block *static_block, |
4d663531 | 1305 | int section, int expandable) |
4359dff1 | 1306 | { |
43f3e411 DE |
1307 | struct objfile *objfile = buildsym_compunit->objfile; |
1308 | struct compunit_symtab *cu = buildsym_compunit->compunit_symtab; | |
7bab9b58 | 1309 | struct symtab *symtab; |
4359dff1 JK |
1310 | struct blockvector *blockvector; |
1311 | struct subfile *subfile; | |
7bab9b58 | 1312 | CORE_ADDR end_addr; |
4359dff1 | 1313 | |
7bab9b58 | 1314 | gdb_assert (static_block != NULL); |
43f3e411 DE |
1315 | gdb_assert (buildsym_compunit != NULL); |
1316 | gdb_assert (buildsym_compunit->subfiles != NULL); | |
7bab9b58 DE |
1317 | |
1318 | end_addr = BLOCK_END (static_block); | |
1319 | ||
1320 | /* Create the GLOBAL_BLOCK and build the blockvector. */ | |
63e43d3a | 1321 | finish_block_internal (NULL, &global_symbols, NULL, NULL, |
4d663531 | 1322 | last_source_start_addr, end_addr, |
7bab9b58 | 1323 | 1, expandable); |
43f3e411 | 1324 | blockvector = make_blockvector (); |
c906108c | 1325 | |
f56ce883 DE |
1326 | /* Read the line table if it has to be read separately. |
1327 | This is only used by xcoffread.c. */ | |
c295b2e5 | 1328 | if (objfile->sf->sym_read_linetable != NULL) |
f56ce883 | 1329 | objfile->sf->sym_read_linetable (objfile); |
c906108c | 1330 | |
4584e32e DE |
1331 | /* Handle the case where the debug info specifies a different path |
1332 | for the main source file. It can cause us to lose track of its | |
1333 | line number information. */ | |
1334 | watch_main_source_file_lossage (); | |
1335 | ||
43f3e411 DE |
1336 | /* Now create the symtab objects proper, if not already done, |
1337 | one for each subfile. */ | |
c906108c | 1338 | |
43f3e411 DE |
1339 | for (subfile = buildsym_compunit->subfiles; |
1340 | subfile != NULL; | |
1341 | subfile = subfile->next) | |
c906108c SS |
1342 | { |
1343 | int linetablesize = 0; | |
c906108c | 1344 | |
7bab9b58 | 1345 | if (subfile->line_vector) |
c906108c | 1346 | { |
7bab9b58 DE |
1347 | linetablesize = sizeof (struct linetable) + |
1348 | subfile->line_vector->nitems * sizeof (struct linetable_entry); | |
1349 | ||
1350 | /* Like the pending blocks, the line table may be | |
1351 | scrambled in reordered executables. Sort it if | |
1352 | OBJF_REORDERED is true. */ | |
1353 | if (objfile->flags & OBJF_REORDERED) | |
1354 | qsort (subfile->line_vector->item, | |
1355 | subfile->line_vector->nitems, | |
1356 | sizeof (struct linetable_entry), compare_line_numbers); | |
1357 | } | |
9182c5bc | 1358 | |
7bab9b58 DE |
1359 | /* Allocate a symbol table if necessary. */ |
1360 | if (subfile->symtab == NULL) | |
43f3e411 | 1361 | subfile->symtab = allocate_symtab (cu, subfile->name); |
7bab9b58 | 1362 | symtab = subfile->symtab; |
9182c5bc | 1363 | |
7bab9b58 | 1364 | /* Fill in its components. */ |
43f3e411 | 1365 | |
7bab9b58 DE |
1366 | if (subfile->line_vector) |
1367 | { | |
1368 | /* Reallocate the line table on the symbol obstack. */ | |
8435453b | 1369 | SYMTAB_LINETABLE (symtab) = (struct linetable *) |
7bab9b58 | 1370 | obstack_alloc (&objfile->objfile_obstack, linetablesize); |
8435453b DE |
1371 | memcpy (SYMTAB_LINETABLE (symtab), subfile->line_vector, |
1372 | linetablesize); | |
c906108c | 1373 | } |
24be086d | 1374 | else |
c906108c | 1375 | { |
8435453b | 1376 | SYMTAB_LINETABLE (symtab) = NULL; |
c906108c | 1377 | } |
c906108c | 1378 | |
7bab9b58 DE |
1379 | /* Use whatever language we have been using for this |
1380 | subfile, not the one that was deduced in allocate_symtab | |
1381 | from the filename. We already did our own deducing when | |
1382 | we created the subfile, and we may have altered our | |
1383 | opinion of what language it is from things we found in | |
1384 | the symbols. */ | |
1385 | symtab->language = subfile->language; | |
43f3e411 | 1386 | } |
c906108c | 1387 | |
43f3e411 DE |
1388 | /* Make sure the symtab of main_subfile is the first in its list. */ |
1389 | { | |
1390 | struct symtab *main_symtab, *prev_symtab; | |
1391 | ||
1392 | main_symtab = buildsym_compunit->main_subfile->symtab; | |
1393 | prev_symtab = NULL; | |
1394 | ALL_COMPUNIT_FILETABS (cu, symtab) | |
1395 | { | |
1396 | if (symtab == main_symtab) | |
1397 | { | |
1398 | if (prev_symtab != NULL) | |
1399 | { | |
1400 | prev_symtab->next = main_symtab->next; | |
1401 | main_symtab->next = COMPUNIT_FILETABS (cu); | |
1402 | COMPUNIT_FILETABS (cu) = main_symtab; | |
1403 | } | |
1404 | break; | |
1405 | } | |
1406 | prev_symtab = symtab; | |
1407 | } | |
1408 | gdb_assert (main_symtab == COMPUNIT_FILETABS (cu)); | |
1409 | } | |
84a146c9 | 1410 | |
0ab9ce85 | 1411 | /* Fill out the compunit symtab. */ |
84a146c9 | 1412 | |
43f3e411 DE |
1413 | if (buildsym_compunit->comp_dir != NULL) |
1414 | { | |
1415 | /* Reallocate the dirname on the symbol obstack. */ | |
1416 | COMPUNIT_DIRNAME (cu) | |
224c3ddb SM |
1417 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, |
1418 | buildsym_compunit->comp_dir, | |
1419 | strlen (buildsym_compunit->comp_dir)); | |
c906108c SS |
1420 | } |
1421 | ||
43f3e411 DE |
1422 | /* Save the debug format string (if any) in the symtab. */ |
1423 | COMPUNIT_DEBUGFORMAT (cu) = buildsym_compunit->debugformat; | |
1424 | ||
1425 | /* Similarly for the producer. */ | |
1426 | COMPUNIT_PRODUCER (cu) = buildsym_compunit->producer; | |
1427 | ||
1428 | COMPUNIT_BLOCKVECTOR (cu) = blockvector; | |
7bab9b58 | 1429 | { |
43f3e411 | 1430 | struct block *b = BLOCKVECTOR_BLOCK (blockvector, GLOBAL_BLOCK); |
cb1df416 | 1431 | |
43f3e411 | 1432 | set_block_compunit_symtab (b, cu); |
7bab9b58 | 1433 | } |
cb1df416 | 1434 | |
43f3e411 DE |
1435 | COMPUNIT_BLOCK_LINE_SECTION (cu) = section; |
1436 | ||
1437 | COMPUNIT_MACRO_TABLE (cu) = pending_macros; | |
1438 | ||
7bab9b58 DE |
1439 | /* Default any symbols without a specified symtab to the primary symtab. */ |
1440 | { | |
1441 | int block_i; | |
1442 | ||
43f3e411 DE |
1443 | /* The main source file's symtab. */ |
1444 | symtab = COMPUNIT_FILETABS (cu); | |
1445 | ||
7bab9b58 DE |
1446 | for (block_i = 0; block_i < BLOCKVECTOR_NBLOCKS (blockvector); block_i++) |
1447 | { | |
1448 | struct block *block = BLOCKVECTOR_BLOCK (blockvector, block_i); | |
1449 | struct symbol *sym; | |
1450 | struct dict_iterator iter; | |
1451 | ||
1452 | /* Inlined functions may have symbols not in the global or | |
1453 | static symbol lists. */ | |
1454 | if (BLOCK_FUNCTION (block) != NULL) | |
08be3fe3 DE |
1455 | if (symbol_symtab (BLOCK_FUNCTION (block)) == NULL) |
1456 | symbol_set_symtab (BLOCK_FUNCTION (block), symtab); | |
7bab9b58 DE |
1457 | |
1458 | /* Note that we only want to fix up symbols from the local | |
1459 | blocks, not blocks coming from included symtabs. That is why | |
1460 | we use ALL_DICT_SYMBOLS here and not ALL_BLOCK_SYMBOLS. */ | |
1461 | ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym) | |
08be3fe3 DE |
1462 | if (symbol_symtab (sym) == NULL) |
1463 | symbol_set_symtab (sym, symtab); | |
7bab9b58 DE |
1464 | } |
1465 | } | |
edb3359d | 1466 | |
43f3e411 | 1467 | add_compunit_symtab_to_objfile (cu); |
43f3e411 DE |
1468 | |
1469 | return cu; | |
7bab9b58 DE |
1470 | } |
1471 | ||
1472 | /* Implementation of the second part of end_symtab. Pass STATIC_BLOCK | |
1473 | as value returned by end_symtab_get_static_block. | |
1474 | ||
1475 | SECTION is the same as for end_symtab: the section number | |
1476 | (in objfile->section_offsets) of the blockvector and linetable. | |
1477 | ||
1478 | If EXPANDABLE is non-zero the GLOBAL_BLOCK dictionary is made | |
1479 | expandable. */ | |
1480 | ||
43f3e411 | 1481 | struct compunit_symtab * |
7bab9b58 | 1482 | end_symtab_from_static_block (struct block *static_block, |
4d663531 | 1483 | int section, int expandable) |
7bab9b58 | 1484 | { |
43f3e411 | 1485 | struct compunit_symtab *cu; |
7bab9b58 DE |
1486 | |
1487 | if (static_block == NULL) | |
1488 | { | |
0ab9ce85 DE |
1489 | /* Handle the "no blockvector" case. |
1490 | When this happens there is nothing to record, so there's nothing | |
1491 | to do: memory will be freed up later. | |
1492 | ||
1493 | Note: We won't be adding a compunit to the objfile's list of | |
1494 | compunits, so there's nothing to unchain. However, since each symtab | |
1495 | is added to the objfile's obstack we can't free that space. | |
1496 | We could do better, but this is believed to be a sufficiently rare | |
1497 | event. */ | |
43f3e411 | 1498 | cu = NULL; |
7bab9b58 DE |
1499 | } |
1500 | else | |
43f3e411 | 1501 | cu = end_symtab_with_blockvector (static_block, section, expandable); |
cb1df416 | 1502 | |
6d30eef8 DE |
1503 | reset_symtab_globals (); |
1504 | ||
43f3e411 | 1505 | return cu; |
6d30eef8 DE |
1506 | } |
1507 | ||
4359dff1 JK |
1508 | /* Finish the symbol definitions for one main source file, close off |
1509 | all the lexical contexts for that file (creating struct block's for | |
1510 | them), then make the struct symtab for that file and put it in the | |
1511 | list of all such. | |
1512 | ||
1513 | END_ADDR is the address of the end of the file's text. SECTION is | |
1514 | the section number (in objfile->section_offsets) of the blockvector | |
1515 | and linetable. | |
1516 | ||
1517 | Note that it is possible for end_symtab() to return NULL. In | |
1518 | particular, for the DWARF case at least, it will return NULL when | |
1519 | it finds a compilation unit that has exactly one DIE, a | |
1520 | TAG_compile_unit DIE. This can happen when we link in an object | |
1521 | file that was compiled from an empty source file. Returning NULL | |
1522 | is probably not the correct thing to do, because then gdb will | |
1523 | never know about this empty file (FIXME). | |
1524 | ||
1525 | If you need to modify STATIC_BLOCK before it is finalized you should | |
1526 | call end_symtab_get_static_block and end_symtab_from_static_block | |
1527 | yourself. */ | |
6d30eef8 | 1528 | |
43f3e411 | 1529 | struct compunit_symtab * |
4d663531 | 1530 | end_symtab (CORE_ADDR end_addr, int section) |
6d30eef8 | 1531 | { |
4359dff1 JK |
1532 | struct block *static_block; |
1533 | ||
4d663531 DE |
1534 | static_block = end_symtab_get_static_block (end_addr, 0, 0); |
1535 | return end_symtab_from_static_block (static_block, section, 0); | |
6d30eef8 DE |
1536 | } |
1537 | ||
4359dff1 | 1538 | /* Same as end_symtab except create a symtab that can be later added to. */ |
6d30eef8 | 1539 | |
43f3e411 | 1540 | struct compunit_symtab * |
4d663531 | 1541 | end_expandable_symtab (CORE_ADDR end_addr, int section) |
6d30eef8 | 1542 | { |
4359dff1 JK |
1543 | struct block *static_block; |
1544 | ||
4d663531 DE |
1545 | static_block = end_symtab_get_static_block (end_addr, 1, 0); |
1546 | return end_symtab_from_static_block (static_block, section, 1); | |
6d30eef8 DE |
1547 | } |
1548 | ||
1549 | /* Subroutine of augment_type_symtab to simplify it. | |
43f3e411 DE |
1550 | Attach the main source file's symtab to all symbols in PENDING_LIST that |
1551 | don't have one. */ | |
6d30eef8 DE |
1552 | |
1553 | static void | |
43f3e411 DE |
1554 | set_missing_symtab (struct pending *pending_list, |
1555 | struct compunit_symtab *cu) | |
6d30eef8 DE |
1556 | { |
1557 | struct pending *pending; | |
1558 | int i; | |
1559 | ||
1560 | for (pending = pending_list; pending != NULL; pending = pending->next) | |
801e3a5b | 1561 | { |
6d30eef8 DE |
1562 | for (i = 0; i < pending->nsyms; ++i) |
1563 | { | |
08be3fe3 DE |
1564 | if (symbol_symtab (pending->symbol[i]) == NULL) |
1565 | symbol_set_symtab (pending->symbol[i], COMPUNIT_FILETABS (cu)); | |
6d30eef8 | 1566 | } |
801e3a5b | 1567 | } |
6d30eef8 | 1568 | } |
c906108c | 1569 | |
6d30eef8 DE |
1570 | /* Same as end_symtab, but for the case where we're adding more symbols |
1571 | to an existing symtab that is known to contain only type information. | |
1572 | This is the case for DWARF4 Type Units. */ | |
1573 | ||
1574 | void | |
0ab9ce85 | 1575 | augment_type_symtab (void) |
6d30eef8 | 1576 | { |
0ab9ce85 | 1577 | struct compunit_symtab *cust = buildsym_compunit->compunit_symtab; |
43f3e411 | 1578 | const struct blockvector *blockvector = COMPUNIT_BLOCKVECTOR (cust); |
6d30eef8 DE |
1579 | |
1580 | if (context_stack_depth > 0) | |
1581 | { | |
1582 | complaint (&symfile_complaints, | |
1583 | _("Context stack not empty in augment_type_symtab")); | |
1584 | context_stack_depth = 0; | |
1585 | } | |
1586 | if (pending_blocks != NULL) | |
1587 | complaint (&symfile_complaints, _("Blocks in a type symtab")); | |
1588 | if (pending_macros != NULL) | |
1589 | complaint (&symfile_complaints, _("Macro in a type symtab")); | |
1590 | if (have_line_numbers) | |
1591 | complaint (&symfile_complaints, | |
1592 | _("Line numbers recorded in a type symtab")); | |
1593 | ||
1594 | if (file_symbols != NULL) | |
1595 | { | |
1596 | struct block *block = BLOCKVECTOR_BLOCK (blockvector, STATIC_BLOCK); | |
1597 | ||
1598 | /* First mark any symbols without a specified symtab as belonging | |
1599 | to the primary symtab. */ | |
43f3e411 | 1600 | set_missing_symtab (file_symbols, cust); |
6d30eef8 DE |
1601 | |
1602 | dict_add_pending (BLOCK_DICT (block), file_symbols); | |
1603 | } | |
1604 | ||
1605 | if (global_symbols != NULL) | |
1606 | { | |
1607 | struct block *block = BLOCKVECTOR_BLOCK (blockvector, GLOBAL_BLOCK); | |
1608 | ||
1609 | /* First mark any symbols without a specified symtab as belonging | |
1610 | to the primary symtab. */ | |
43f3e411 | 1611 | set_missing_symtab (global_symbols, cust); |
6d30eef8 DE |
1612 | |
1613 | dict_add_pending (BLOCK_DICT (block), global_symbols); | |
1614 | } | |
1615 | ||
1616 | reset_symtab_globals (); | |
c906108c SS |
1617 | } |
1618 | ||
1619 | /* Push a context block. Args are an identifying nesting level | |
1620 | (checkable when you pop it), and the starting PC address of this | |
1621 | context. */ | |
1622 | ||
1623 | struct context_stack * | |
1624 | push_context (int desc, CORE_ADDR valu) | |
1625 | { | |
fe978cb0 | 1626 | struct context_stack *newobj; |
c906108c SS |
1627 | |
1628 | if (context_stack_depth == context_stack_size) | |
1629 | { | |
1630 | context_stack_size *= 2; | |
1631 | context_stack = (struct context_stack *) | |
1632 | xrealloc ((char *) context_stack, | |
c5aa993b | 1633 | (context_stack_size * sizeof (struct context_stack))); |
c906108c SS |
1634 | } |
1635 | ||
fe978cb0 PA |
1636 | newobj = &context_stack[context_stack_depth++]; |
1637 | newobj->depth = desc; | |
1638 | newobj->locals = local_symbols; | |
1639 | newobj->old_blocks = pending_blocks; | |
1640 | newobj->start_addr = valu; | |
22cee43f | 1641 | newobj->local_using_directives = local_using_directives; |
fe978cb0 | 1642 | newobj->name = NULL; |
c906108c SS |
1643 | |
1644 | local_symbols = NULL; | |
22cee43f | 1645 | local_using_directives = NULL; |
c906108c | 1646 | |
fe978cb0 | 1647 | return newobj; |
c906108c | 1648 | } |
0c5e171a | 1649 | |
a672ef13 | 1650 | /* Pop a context block. Returns the address of the context block just |
4a64f543 | 1651 | popped. */ |
a672ef13 | 1652 | |
0c5e171a KD |
1653 | struct context_stack * |
1654 | pop_context (void) | |
1655 | { | |
1656 | gdb_assert (context_stack_depth > 0); | |
1657 | return (&context_stack[--context_stack_depth]); | |
1658 | } | |
1659 | ||
c906108c | 1660 | \f |
357e46e7 | 1661 | |
4a64f543 | 1662 | /* Compute a small integer hash code for the given name. */ |
c906108c SS |
1663 | |
1664 | int | |
0d5cff50 | 1665 | hashname (const char *name) |
c906108c | 1666 | { |
357e46e7 | 1667 | return (hash(name,strlen(name)) % HASHSIZE); |
c906108c SS |
1668 | } |
1669 | \f | |
1670 | ||
1671 | void | |
554d387d | 1672 | record_debugformat (const char *format) |
c906108c | 1673 | { |
43f3e411 | 1674 | buildsym_compunit->debugformat = format; |
c906108c SS |
1675 | } |
1676 | ||
303b6f5d DJ |
1677 | void |
1678 | record_producer (const char *producer) | |
1679 | { | |
43f3e411 | 1680 | buildsym_compunit->producer = producer; |
303b6f5d DJ |
1681 | } |
1682 | ||
c906108c SS |
1683 | /* Merge the first symbol list SRCLIST into the second symbol list |
1684 | TARGETLIST by repeated calls to add_symbol_to_list(). This | |
1685 | procedure "frees" each link of SRCLIST by adding it to the | |
1686 | free_pendings list. Caller must set SRCLIST to a null list after | |
1687 | calling this function. | |
1688 | ||
4a64f543 | 1689 | Void return. */ |
c906108c SS |
1690 | |
1691 | void | |
1692 | merge_symbol_lists (struct pending **srclist, struct pending **targetlist) | |
1693 | { | |
52f0bd74 | 1694 | int i; |
c906108c SS |
1695 | |
1696 | if (!srclist || !*srclist) | |
1697 | return; | |
1698 | ||
1699 | /* Merge in elements from current link. */ | |
1700 | for (i = 0; i < (*srclist)->nsyms; i++) | |
1701 | add_symbol_to_list ((*srclist)->symbol[i], targetlist); | |
1702 | ||
1703 | /* Recurse on next. */ | |
1704 | merge_symbol_lists (&(*srclist)->next, targetlist); | |
1705 | ||
1706 | /* "Free" the current link. */ | |
1707 | (*srclist)->next = free_pendings; | |
1708 | free_pendings = (*srclist); | |
1709 | } | |
1710 | \f | |
46212e0b TT |
1711 | |
1712 | /* Name of source file whose symbol data we are now processing. This | |
1713 | comes from a symbol of type N_SO for stabs. For Dwarf it comes | |
1714 | from the DW_AT_name attribute of a DW_TAG_compile_unit DIE. */ | |
1715 | ||
1716 | static char *last_source_file; | |
1717 | ||
1718 | /* See buildsym.h. */ | |
1719 | ||
1720 | void | |
1721 | set_last_source_file (const char *name) | |
1722 | { | |
1723 | xfree (last_source_file); | |
1724 | last_source_file = name == NULL ? NULL : xstrdup (name); | |
1725 | } | |
1726 | ||
1727 | /* See buildsym.h. */ | |
1728 | ||
1729 | const char * | |
1730 | get_last_source_file (void) | |
1731 | { | |
1732 | return last_source_file; | |
1733 | } | |
1734 | ||
1735 | \f | |
1736 | ||
c906108c SS |
1737 | /* Initialize anything that needs initializing when starting to read a |
1738 | fresh piece of a symbol file, e.g. reading in the stuff | |
1739 | corresponding to a psymtab. */ | |
1740 | ||
1741 | void | |
fba45db2 | 1742 | buildsym_init (void) |
c906108c | 1743 | { |
fc474241 | 1744 | subfile_stack = NULL; |
801e3a5b | 1745 | |
801e3a5b | 1746 | pending_addrmap_interesting = 0; |
0ab9ce85 DE |
1747 | |
1748 | /* Context stack is initially empty. Allocate first one with room | |
1749 | for a few levels; reuse it forever afterward. */ | |
1750 | if (context_stack == NULL) | |
1751 | { | |
1752 | context_stack_size = INITIAL_CONTEXT_STACK_SIZE; | |
8d749320 | 1753 | context_stack = XNEWVEC (struct context_stack, context_stack_size); |
0ab9ce85 DE |
1754 | } |
1755 | ||
1756 | /* Ensure the really_free_pendings cleanup was called after | |
1757 | the last time. */ | |
1758 | gdb_assert (free_pendings == NULL); | |
1759 | gdb_assert (pending_blocks == NULL); | |
1760 | gdb_assert (file_symbols == NULL); | |
1761 | gdb_assert (global_symbols == NULL); | |
22cee43f | 1762 | gdb_assert (global_using_directives == NULL); |
0ab9ce85 DE |
1763 | gdb_assert (pending_macros == NULL); |
1764 | gdb_assert (pending_addrmap == NULL); | |
1765 | gdb_assert (buildsym_compunit == NULL); | |
c906108c SS |
1766 | } |
1767 | ||
1768 | /* Initialize anything that needs initializing when a completely new | |
1769 | symbol file is specified (not just adding some symbols from another | |
1770 | file, e.g. a shared library). */ | |
1771 | ||
1772 | void | |
fba45db2 | 1773 | buildsym_new_init (void) |
c906108c SS |
1774 | { |
1775 | buildsym_init (); | |
1776 | } |