Commit | Line | Data |
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c906108c | 1 | /* Support routines for building symbol tables in GDB's internal format. |
e2882c85 | 2 | Copyright (C) 1986-2018 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | /* This module provides subroutines used for creating and adding to | |
20 | the symbol table. These routines are called from various symbol- | |
21 | file-reading routines. | |
22 | ||
23 | Routines to support specific debugging information formats (stabs, | |
0ab9ce85 DE |
24 | DWARF, etc) belong somewhere else. |
25 | ||
26 | The basic way this module is used is as follows: | |
27 | ||
28 | buildsym_init (); | |
33c7c59d | 29 | scoped_free_pendings free_pending; |
0ab9ce85 DE |
30 | cust = start_symtab (...); |
31 | ... read debug info ... | |
32 | cust = end_symtab (...); | |
0ab9ce85 DE |
33 | |
34 | The compunit symtab pointer ("cust") is returned from both start_symtab | |
35 | and end_symtab to simplify the debug info readers. | |
36 | ||
37 | There are minor variations on this, e.g., dwarf2read.c splits end_symtab | |
38 | into two calls: end_symtab_get_static_block, end_symtab_from_static_block, | |
39 | but all debug info readers follow this basic flow. | |
40 | ||
41 | Reading DWARF Type Units is another variation: | |
42 | ||
43 | buildsym_init (); | |
33c7c59d | 44 | scoped_free_pendings free_pending; |
0ab9ce85 DE |
45 | cust = start_symtab (...); |
46 | ... read debug info ... | |
47 | cust = end_expandable_symtab (...); | |
0ab9ce85 DE |
48 | |
49 | And then reading subsequent Type Units within the containing "Comp Unit" | |
50 | will use a second flow: | |
51 | ||
52 | buildsym_init (); | |
33c7c59d | 53 | scoped_free_pendings free_pending; |
0ab9ce85 DE |
54 | cust = restart_symtab (...); |
55 | ... read debug info ... | |
56 | cust = augment_type_symtab (...); | |
0ab9ce85 DE |
57 | |
58 | dbxread.c and xcoffread.c use another variation: | |
59 | ||
60 | buildsym_init (); | |
33c7c59d | 61 | scoped_free_pendings free_pending; |
0ab9ce85 DE |
62 | cust = start_symtab (...); |
63 | ... read debug info ... | |
64 | cust = end_symtab (...); | |
65 | ... start_symtab + read + end_symtab repeated ... | |
0ab9ce85 | 66 | */ |
c906108c SS |
67 | |
68 | #include "defs.h" | |
69 | #include "bfd.h" | |
04ea0df1 | 70 | #include "gdb_obstack.h" |
c906108c | 71 | #include "symtab.h" |
72367fb4 | 72 | #include "symfile.h" |
c906108c SS |
73 | #include "objfiles.h" |
74 | #include "gdbtypes.h" | |
75 | #include "complaints.h" | |
4a64f543 | 76 | #include "expression.h" /* For "enum exp_opcode" used by... */ |
357e46e7 | 77 | #include "bcache.h" |
4a64f543 | 78 | #include "filenames.h" /* For DOSish file names. */ |
99d9066e | 79 | #include "macrotab.h" |
261397f8 | 80 | #include "demangle.h" /* Needed by SYMBOL_INIT_DEMANGLED_NAME. */ |
fe898f56 | 81 | #include "block.h" |
9219021c | 82 | #include "cp-support.h" |
de4f826b | 83 | #include "dictionary.h" |
801e3a5b | 84 | #include "addrmap.h" |
b05628f0 | 85 | #include <algorithm> |
9219021c | 86 | |
c906108c | 87 | /* Ask buildsym.h to define the vars it normally declares `extern'. */ |
c5aa993b JM |
88 | #define EXTERN |
89 | /**/ | |
4a64f543 | 90 | #include "buildsym.h" /* Our own declarations. */ |
c906108c SS |
91 | #undef EXTERN |
92 | ||
0a0edcd5 | 93 | /* For cleanup_undefined_stabs_types and finish_global_stabs (somewhat |
c906108c SS |
94 | questionable--see comment where we call them). */ |
95 | ||
96 | #include "stabsread.h" | |
97 | ||
43f3e411 DE |
98 | /* Buildsym's counterpart to struct compunit_symtab. |
99 | TODO(dje): Move all related global state into here. */ | |
4d663531 | 100 | |
43f3e411 DE |
101 | struct buildsym_compunit |
102 | { | |
b248663f TT |
103 | /* Start recording information about a primary source file (IOW, not an |
104 | included source file). | |
105 | COMP_DIR is the directory in which the compilation unit was compiled | |
106 | (or NULL if not known). */ | |
107 | ||
108 | buildsym_compunit (struct objfile *objfile_, const char *comp_dir_, | |
109 | enum language language_) | |
110 | : objfile (objfile_), | |
111 | comp_dir (comp_dir_ == nullptr ? nullptr : xstrdup (comp_dir_)), | |
112 | language (language_) | |
113 | { | |
114 | } | |
115 | ||
116 | ~buildsym_compunit () | |
117 | { | |
118 | struct subfile *subfile, *nextsub; | |
119 | ||
120 | for (subfile = subfiles; | |
121 | subfile != NULL; | |
122 | subfile = nextsub) | |
123 | { | |
124 | nextsub = subfile->next; | |
125 | xfree (subfile->name); | |
126 | xfree (subfile->line_vector); | |
127 | xfree (subfile); | |
128 | } | |
129 | xfree (comp_dir); | |
130 | } | |
131 | ||
43f3e411 DE |
132 | /* The objfile we're reading debug info from. */ |
133 | struct objfile *objfile; | |
134 | ||
135 | /* List of subfiles (source files). | |
136 | Files are added to the front of the list. | |
137 | This is important mostly for the language determination hacks we use, | |
138 | which iterate over previously added files. */ | |
b248663f | 139 | struct subfile *subfiles = nullptr; |
43f3e411 DE |
140 | |
141 | /* The subfile of the main source file. */ | |
b248663f | 142 | struct subfile *main_subfile = nullptr; |
4d663531 | 143 | |
43f3e411 DE |
144 | /* E.g., DW_AT_comp_dir if DWARF. Space for this is malloc'd. */ |
145 | char *comp_dir; | |
4d663531 | 146 | |
43f3e411 DE |
147 | /* Space for this is not malloc'd, and is assumed to have at least |
148 | the same lifetime as objfile. */ | |
b248663f | 149 | const char *producer = nullptr; |
4d663531 | 150 | |
43f3e411 DE |
151 | /* Space for this is not malloc'd, and is assumed to have at least |
152 | the same lifetime as objfile. */ | |
b248663f | 153 | const char *debugformat = nullptr; |
94d09e04 | 154 | |
43f3e411 | 155 | /* The compunit we are building. */ |
b248663f | 156 | struct compunit_symtab *compunit_symtab = nullptr; |
5ffa0793 PA |
157 | |
158 | /* Language of this compunit_symtab. */ | |
159 | enum language language; | |
43f3e411 | 160 | }; |
94d09e04 | 161 | |
43f3e411 DE |
162 | /* The work-in-progress of the compunit we are building. |
163 | This is created first, before any subfiles by start_symtab. */ | |
7bab9b58 | 164 | |
43f3e411 | 165 | static struct buildsym_compunit *buildsym_compunit; |
7bab9b58 | 166 | |
c906108c SS |
167 | /* List of free `struct pending' structures for reuse. */ |
168 | ||
169 | static struct pending *free_pendings; | |
170 | ||
171 | /* Non-zero if symtab has line number info. This prevents an | |
172 | otherwise empty symtab from being tossed. */ | |
173 | ||
174 | static int have_line_numbers; | |
801e3a5b JB |
175 | |
176 | /* The mutable address map for the compilation unit whose symbols | |
177 | we're currently reading. The symtabs' shared blockvector will | |
178 | point to a fixed copy of this. */ | |
179 | static struct addrmap *pending_addrmap; | |
180 | ||
181 | /* The obstack on which we allocate pending_addrmap. | |
182 | If pending_addrmap is NULL, this is uninitialized; otherwise, it is | |
183 | initialized (and holds pending_addrmap). */ | |
184 | static struct obstack pending_addrmap_obstack; | |
185 | ||
186 | /* Non-zero if we recorded any ranges in the addrmap that are | |
187 | different from those in the blockvector already. We set this to | |
188 | zero when we start processing a symfile, and if it's still zero at | |
189 | the end, then we just toss the addrmap. */ | |
190 | static int pending_addrmap_interesting; | |
191 | ||
93eed41f TT |
192 | /* An obstack used for allocating pending blocks. */ |
193 | ||
194 | static struct obstack pending_block_obstack; | |
195 | ||
196 | /* List of blocks already made (lexical contexts already closed). | |
197 | This is used at the end to make the blockvector. */ | |
198 | ||
199 | struct pending_block | |
200 | { | |
201 | struct pending_block *next; | |
202 | struct block *block; | |
203 | }; | |
204 | ||
205 | /* Pointer to the head of a linked list of symbol blocks which have | |
206 | already been finalized (lexical contexts already closed) and which | |
207 | are just waiting to be built into a blockvector when finalizing the | |
208 | associated symtab. */ | |
209 | ||
210 | static struct pending_block *pending_blocks; | |
fc474241 DE |
211 | |
212 | struct subfile_stack | |
213 | { | |
214 | struct subfile_stack *next; | |
215 | char *name; | |
216 | }; | |
217 | ||
218 | static struct subfile_stack *subfile_stack; | |
219 | ||
220 | /* The macro table for the compilation unit whose symbols we're | |
43f3e411 | 221 | currently reading. */ |
fc474241 DE |
222 | static struct macro_table *pending_macros; |
223 | ||
0ab9ce85 DE |
224 | static void free_buildsym_compunit (void); |
225 | ||
c906108c | 226 | static int compare_line_numbers (const void *ln1p, const void *ln2p); |
0b49e518 TT |
227 | |
228 | static void record_pending_block (struct objfile *objfile, | |
229 | struct block *block, | |
230 | struct pending_block *opblock); | |
c906108c SS |
231 | |
232 | /* Initial sizes of data structures. These are realloc'd larger if | |
233 | needed, and realloc'd down to the size actually used, when | |
234 | completed. */ | |
235 | ||
236 | #define INITIAL_CONTEXT_STACK_SIZE 10 | |
237 | #define INITIAL_LINE_VECTOR_LENGTH 1000 | |
238 | \f | |
239 | ||
4a64f543 | 240 | /* Maintain the lists of symbols and blocks. */ |
c906108c | 241 | |
93bf33fd | 242 | /* Add a symbol to one of the lists of symbols. */ |
c906108c SS |
243 | |
244 | void | |
245 | add_symbol_to_list (struct symbol *symbol, struct pending **listhead) | |
246 | { | |
52f0bd74 | 247 | struct pending *link; |
c906108c SS |
248 | |
249 | /* If this is an alias for another symbol, don't add it. */ | |
250 | if (symbol->ginfo.name && symbol->ginfo.name[0] == '#') | |
251 | return; | |
252 | ||
4a64f543 | 253 | /* We keep PENDINGSIZE symbols in each link of the list. If we |
c906108c SS |
254 | don't have a link with room in it, add a new link. */ |
255 | if (*listhead == NULL || (*listhead)->nsyms == PENDINGSIZE) | |
256 | { | |
257 | if (free_pendings) | |
258 | { | |
259 | link = free_pendings; | |
260 | free_pendings = link->next; | |
261 | } | |
262 | else | |
263 | { | |
8d749320 | 264 | link = XNEW (struct pending); |
c906108c SS |
265 | } |
266 | ||
267 | link->next = *listhead; | |
268 | *listhead = link; | |
269 | link->nsyms = 0; | |
270 | } | |
271 | ||
272 | (*listhead)->symbol[(*listhead)->nsyms++] = symbol; | |
273 | } | |
274 | ||
275 | /* Find a symbol named NAME on a LIST. NAME need not be | |
276 | '\0'-terminated; LENGTH is the length of the name. */ | |
277 | ||
278 | struct symbol * | |
279 | find_symbol_in_list (struct pending *list, char *name, int length) | |
280 | { | |
281 | int j; | |
0d5cff50 | 282 | const char *pp; |
c906108c SS |
283 | |
284 | while (list != NULL) | |
285 | { | |
286 | for (j = list->nsyms; --j >= 0;) | |
287 | { | |
3567439c | 288 | pp = SYMBOL_LINKAGE_NAME (list->symbol[j]); |
5aafa1cc PM |
289 | if (*pp == *name && strncmp (pp, name, length) == 0 |
290 | && pp[length] == '\0') | |
c906108c SS |
291 | { |
292 | return (list->symbol[j]); | |
293 | } | |
294 | } | |
295 | list = list->next; | |
296 | } | |
297 | return (NULL); | |
298 | } | |
299 | ||
33c7c59d TT |
300 | /* At end of reading syms, or in case of quit, ensure everything |
301 | associated with building symtabs is freed. | |
0ab9ce85 DE |
302 | |
303 | N.B. This is *not* intended to be used when building psymtabs. Some debug | |
304 | info readers call this anyway, which is harmless if confusing. */ | |
c906108c | 305 | |
33c7c59d | 306 | scoped_free_pendings::~scoped_free_pendings () |
c906108c SS |
307 | { |
308 | struct pending *next, *next1; | |
309 | ||
310 | for (next = free_pendings; next; next = next1) | |
311 | { | |
312 | next1 = next->next; | |
b8c9b27d | 313 | xfree ((void *) next); |
c906108c SS |
314 | } |
315 | free_pendings = NULL; | |
316 | ||
317 | free_pending_blocks (); | |
318 | ||
319 | for (next = file_symbols; next != NULL; next = next1) | |
320 | { | |
321 | next1 = next->next; | |
b8c9b27d | 322 | xfree ((void *) next); |
c906108c SS |
323 | } |
324 | file_symbols = NULL; | |
325 | ||
326 | for (next = global_symbols; next != NULL; next = next1) | |
327 | { | |
328 | next1 = next->next; | |
b8c9b27d | 329 | xfree ((void *) next); |
c906108c SS |
330 | } |
331 | global_symbols = NULL; | |
99d9066e JB |
332 | |
333 | if (pending_macros) | |
334 | free_macro_table (pending_macros); | |
0ab9ce85 | 335 | pending_macros = NULL; |
801e3a5b JB |
336 | |
337 | if (pending_addrmap) | |
0ab9ce85 DE |
338 | obstack_free (&pending_addrmap_obstack, NULL); |
339 | pending_addrmap = NULL; | |
340 | ||
341 | free_buildsym_compunit (); | |
c906108c SS |
342 | } |
343 | ||
4a64f543 | 344 | /* This function is called to discard any pending blocks. */ |
c906108c SS |
345 | |
346 | void | |
347 | free_pending_blocks (void) | |
348 | { | |
93eed41f TT |
349 | if (pending_blocks != NULL) |
350 | { | |
351 | obstack_free (&pending_block_obstack, NULL); | |
352 | pending_blocks = NULL; | |
353 | } | |
c906108c SS |
354 | } |
355 | ||
356 | /* Take one of the lists of symbols and make a block from it. Keep | |
357 | the order the symbols have in the list (reversed from the input | |
358 | file). Put the block on the list of pending blocks. */ | |
359 | ||
84a146c9 | 360 | static struct block * |
63e43d3a PMR |
361 | finish_block_internal (struct symbol *symbol, |
362 | struct pending **listhead, | |
84a146c9 | 363 | struct pending_block *old_blocks, |
63e43d3a | 364 | const struct dynamic_prop *static_link, |
84a146c9 | 365 | CORE_ADDR start, CORE_ADDR end, |
6d30eef8 | 366 | int is_global, int expandable) |
c906108c | 367 | { |
43f3e411 | 368 | struct objfile *objfile = buildsym_compunit->objfile; |
5af949e3 | 369 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 AC |
370 | struct pending *next, *next1; |
371 | struct block *block; | |
372 | struct pending_block *pblock; | |
c906108c | 373 | struct pending_block *opblock; |
c906108c | 374 | |
84a146c9 TT |
375 | block = (is_global |
376 | ? allocate_global_block (&objfile->objfile_obstack) | |
377 | : allocate_block (&objfile->objfile_obstack)); | |
c906108c | 378 | |
261397f8 DJ |
379 | if (symbol) |
380 | { | |
5ffa0793 PA |
381 | BLOCK_DICT (block) |
382 | = dict_create_linear (&objfile->objfile_obstack, | |
383 | buildsym_compunit->language, *listhead); | |
261397f8 DJ |
384 | } |
385 | else | |
c906108c | 386 | { |
6d30eef8 DE |
387 | if (expandable) |
388 | { | |
5ffa0793 PA |
389 | BLOCK_DICT (block) |
390 | = dict_create_hashed_expandable (buildsym_compunit->language); | |
6d30eef8 DE |
391 | dict_add_pending (BLOCK_DICT (block), *listhead); |
392 | } | |
393 | else | |
394 | { | |
395 | BLOCK_DICT (block) = | |
5ffa0793 PA |
396 | dict_create_hashed (&objfile->objfile_obstack, |
397 | buildsym_compunit->language, *listhead); | |
6d30eef8 | 398 | } |
c906108c SS |
399 | } |
400 | ||
401 | BLOCK_START (block) = start; | |
402 | BLOCK_END (block) = end; | |
c906108c | 403 | |
c906108c SS |
404 | /* Put the block in as the value of the symbol that names it. */ |
405 | ||
406 | if (symbol) | |
407 | { | |
408 | struct type *ftype = SYMBOL_TYPE (symbol); | |
de4f826b | 409 | struct dict_iterator iter; |
c906108c SS |
410 | SYMBOL_BLOCK_VALUE (symbol) = block; |
411 | BLOCK_FUNCTION (block) = symbol; | |
412 | ||
413 | if (TYPE_NFIELDS (ftype) <= 0) | |
414 | { | |
415 | /* No parameter type information is recorded with the | |
416 | function's type. Set that from the type of the | |
4a64f543 | 417 | parameter symbols. */ |
c906108c SS |
418 | int nparams = 0, iparams; |
419 | struct symbol *sym; | |
8157b174 TT |
420 | |
421 | /* Here we want to directly access the dictionary, because | |
422 | we haven't fully initialized the block yet. */ | |
423 | ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym) | |
c906108c | 424 | { |
2a2d4dc3 AS |
425 | if (SYMBOL_IS_ARGUMENT (sym)) |
426 | nparams++; | |
c906108c SS |
427 | } |
428 | if (nparams > 0) | |
429 | { | |
430 | TYPE_NFIELDS (ftype) = nparams; | |
431 | TYPE_FIELDS (ftype) = (struct field *) | |
432 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
433 | ||
de4f826b | 434 | iparams = 0; |
8157b174 TT |
435 | /* Here we want to directly access the dictionary, because |
436 | we haven't fully initialized the block yet. */ | |
437 | ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym) | |
c906108c | 438 | { |
de4f826b DC |
439 | if (iparams == nparams) |
440 | break; | |
441 | ||
2a2d4dc3 | 442 | if (SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 443 | { |
c906108c | 444 | TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym); |
8176bb6d | 445 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c | 446 | iparams++; |
c906108c SS |
447 | } |
448 | } | |
449 | } | |
450 | } | |
451 | } | |
452 | else | |
453 | { | |
454 | BLOCK_FUNCTION (block) = NULL; | |
455 | } | |
456 | ||
63e43d3a PMR |
457 | if (static_link != NULL) |
458 | objfile_register_static_link (objfile, block, static_link); | |
459 | ||
c906108c SS |
460 | /* Now "free" the links of the list, and empty the list. */ |
461 | ||
462 | for (next = *listhead; next; next = next1) | |
463 | { | |
464 | next1 = next->next; | |
465 | next->next = free_pendings; | |
466 | free_pendings = next; | |
467 | } | |
468 | *listhead = NULL; | |
469 | ||
c906108c | 470 | /* Check to be sure that the blocks have an end address that is |
4a64f543 | 471 | greater than starting address. */ |
c906108c SS |
472 | |
473 | if (BLOCK_END (block) < BLOCK_START (block)) | |
474 | { | |
475 | if (symbol) | |
476 | { | |
b98664d3 | 477 | complaint (_("block end address less than block " |
3e43a32a | 478 | "start address in %s (patched it)"), |
de5ad195 | 479 | SYMBOL_PRINT_NAME (symbol)); |
c906108c SS |
480 | } |
481 | else | |
482 | { | |
b98664d3 | 483 | complaint (_("block end address %s less than block " |
3e43a32a | 484 | "start address %s (patched it)"), |
5af949e3 UW |
485 | paddress (gdbarch, BLOCK_END (block)), |
486 | paddress (gdbarch, BLOCK_START (block))); | |
c906108c | 487 | } |
4a64f543 | 488 | /* Better than nothing. */ |
c906108c SS |
489 | BLOCK_END (block) = BLOCK_START (block); |
490 | } | |
c906108c SS |
491 | |
492 | /* Install this block as the superblock of all blocks made since the | |
493 | start of this scope that don't have superblocks yet. */ | |
494 | ||
495 | opblock = NULL; | |
c0219d42 MS |
496 | for (pblock = pending_blocks; |
497 | pblock && pblock != old_blocks; | |
498 | pblock = pblock->next) | |
c906108c SS |
499 | { |
500 | if (BLOCK_SUPERBLOCK (pblock->block) == NULL) | |
501 | { | |
c906108c | 502 | /* Check to be sure the blocks are nested as we receive |
4a64f543 | 503 | them. If the compiler/assembler/linker work, this just |
14711c82 DJ |
504 | burns a small amount of time. |
505 | ||
506 | Skip blocks which correspond to a function; they're not | |
507 | physically nested inside this other blocks, only | |
508 | lexically nested. */ | |
509 | if (BLOCK_FUNCTION (pblock->block) == NULL | |
510 | && (BLOCK_START (pblock->block) < BLOCK_START (block) | |
511 | || BLOCK_END (pblock->block) > BLOCK_END (block))) | |
c906108c SS |
512 | { |
513 | if (symbol) | |
514 | { | |
b98664d3 | 515 | complaint (_("inner block not inside outer block in %s"), |
de5ad195 | 516 | SYMBOL_PRINT_NAME (symbol)); |
c906108c SS |
517 | } |
518 | else | |
519 | { | |
b98664d3 | 520 | complaint (_("inner block (%s-%s) not " |
3e43a32a | 521 | "inside outer block (%s-%s)"), |
5af949e3 UW |
522 | paddress (gdbarch, BLOCK_START (pblock->block)), |
523 | paddress (gdbarch, BLOCK_END (pblock->block)), | |
524 | paddress (gdbarch, BLOCK_START (block)), | |
525 | paddress (gdbarch, BLOCK_END (block))); | |
c906108c SS |
526 | } |
527 | if (BLOCK_START (pblock->block) < BLOCK_START (block)) | |
528 | BLOCK_START (pblock->block) = BLOCK_START (block); | |
529 | if (BLOCK_END (pblock->block) > BLOCK_END (block)) | |
530 | BLOCK_END (pblock->block) = BLOCK_END (block); | |
531 | } | |
c906108c SS |
532 | BLOCK_SUPERBLOCK (pblock->block) = block; |
533 | } | |
534 | opblock = pblock; | |
535 | } | |
536 | ||
22cee43f PMR |
537 | block_set_using (block, |
538 | (is_global | |
539 | ? global_using_directives | |
540 | : local_using_directives), | |
541 | &objfile->objfile_obstack); | |
542 | if (is_global) | |
543 | global_using_directives = NULL; | |
544 | else | |
545 | local_using_directives = NULL; | |
27aa8d6a | 546 | |
c906108c | 547 | record_pending_block (objfile, block, opblock); |
801e3a5b JB |
548 | |
549 | return block; | |
c906108c SS |
550 | } |
551 | ||
84a146c9 | 552 | struct block * |
63e43d3a PMR |
553 | finish_block (struct symbol *symbol, |
554 | struct pending **listhead, | |
84a146c9 | 555 | struct pending_block *old_blocks, |
63e43d3a | 556 | const struct dynamic_prop *static_link, |
4d663531 | 557 | CORE_ADDR start, CORE_ADDR end) |
84a146c9 | 558 | { |
63e43d3a | 559 | return finish_block_internal (symbol, listhead, old_blocks, static_link, |
4d663531 | 560 | start, end, 0, 0); |
84a146c9 | 561 | } |
de4f826b | 562 | |
c906108c SS |
563 | /* Record BLOCK on the list of all blocks in the file. Put it after |
564 | OPBLOCK, or at the beginning if opblock is NULL. This puts the | |
565 | block in the list after all its subblocks. | |
566 | ||
4a146b47 | 567 | Allocate the pending block struct in the objfile_obstack to save |
c906108c SS |
568 | time. This wastes a little space. FIXME: Is it worth it? */ |
569 | ||
0b49e518 | 570 | static void |
c906108c SS |
571 | record_pending_block (struct objfile *objfile, struct block *block, |
572 | struct pending_block *opblock) | |
573 | { | |
52f0bd74 | 574 | struct pending_block *pblock; |
c906108c | 575 | |
93eed41f TT |
576 | if (pending_blocks == NULL) |
577 | obstack_init (&pending_block_obstack); | |
578 | ||
8d749320 | 579 | pblock = XOBNEW (&pending_block_obstack, struct pending_block); |
c906108c SS |
580 | pblock->block = block; |
581 | if (opblock) | |
582 | { | |
583 | pblock->next = opblock->next; | |
584 | opblock->next = pblock; | |
585 | } | |
586 | else | |
587 | { | |
588 | pblock->next = pending_blocks; | |
589 | pending_blocks = pblock; | |
590 | } | |
591 | } | |
592 | ||
801e3a5b JB |
593 | |
594 | /* Record that the range of addresses from START to END_INCLUSIVE | |
595 | (inclusive, like it says) belongs to BLOCK. BLOCK's start and end | |
596 | addresses must be set already. You must apply this function to all | |
597 | BLOCK's children before applying it to BLOCK. | |
598 | ||
599 | If a call to this function complicates the picture beyond that | |
600 | already provided by BLOCK_START and BLOCK_END, then we create an | |
601 | address map for the block. */ | |
602 | void | |
603 | record_block_range (struct block *block, | |
604 | CORE_ADDR start, CORE_ADDR end_inclusive) | |
605 | { | |
606 | /* If this is any different from the range recorded in the block's | |
607 | own BLOCK_START and BLOCK_END, then note that the address map has | |
608 | become interesting. Note that even if this block doesn't have | |
609 | any "interesting" ranges, some later block might, so we still | |
610 | need to record this block in the addrmap. */ | |
611 | if (start != BLOCK_START (block) | |
612 | || end_inclusive + 1 != BLOCK_END (block)) | |
613 | pending_addrmap_interesting = 1; | |
614 | ||
615 | if (! pending_addrmap) | |
616 | { | |
617 | obstack_init (&pending_addrmap_obstack); | |
618 | pending_addrmap = addrmap_create_mutable (&pending_addrmap_obstack); | |
619 | } | |
620 | ||
621 | addrmap_set_empty (pending_addrmap, start, end_inclusive, block); | |
622 | } | |
623 | ||
822e978b | 624 | static struct blockvector * |
43f3e411 | 625 | make_blockvector (void) |
c906108c | 626 | { |
43f3e411 | 627 | struct objfile *objfile = buildsym_compunit->objfile; |
52f0bd74 AC |
628 | struct pending_block *next; |
629 | struct blockvector *blockvector; | |
630 | int i; | |
c906108c SS |
631 | |
632 | /* Count the length of the list of blocks. */ | |
633 | ||
634 | for (next = pending_blocks, i = 0; next; next = next->next, i++) | |
635 | {; | |
636 | } | |
637 | ||
638 | blockvector = (struct blockvector *) | |
4a146b47 | 639 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
640 | (sizeof (struct blockvector) |
641 | + (i - 1) * sizeof (struct block *))); | |
642 | ||
4a64f543 | 643 | /* Copy the blocks into the blockvector. This is done in reverse |
c906108c | 644 | order, which happens to put the blocks into the proper order |
4a64f543 | 645 | (ascending starting address). finish_block has hair to insert |
c906108c SS |
646 | each block into the list after its subblocks in order to make |
647 | sure this is true. */ | |
648 | ||
649 | BLOCKVECTOR_NBLOCKS (blockvector) = i; | |
650 | for (next = pending_blocks; next; next = next->next) | |
651 | { | |
652 | BLOCKVECTOR_BLOCK (blockvector, --i) = next->block; | |
653 | } | |
654 | ||
89ba75b1 | 655 | free_pending_blocks (); |
c906108c | 656 | |
801e3a5b JB |
657 | /* If we needed an address map for this symtab, record it in the |
658 | blockvector. */ | |
659 | if (pending_addrmap && pending_addrmap_interesting) | |
660 | BLOCKVECTOR_MAP (blockvector) | |
661 | = addrmap_create_fixed (pending_addrmap, &objfile->objfile_obstack); | |
662 | else | |
663 | BLOCKVECTOR_MAP (blockvector) = 0; | |
4aad0dfc | 664 | |
c906108c | 665 | /* Some compilers output blocks in the wrong order, but we depend on |
4a64f543 | 666 | their being in the right order so we can binary search. Check the |
4aad0dfc DE |
667 | order and moan about it. |
668 | Note: Remember that the first two blocks are the global and static | |
669 | blocks. We could special case that fact and begin checking at block 2. | |
670 | To avoid making that assumption we do not. */ | |
c906108c SS |
671 | if (BLOCKVECTOR_NBLOCKS (blockvector) > 1) |
672 | { | |
673 | for (i = 1; i < BLOCKVECTOR_NBLOCKS (blockvector); i++) | |
674 | { | |
675 | if (BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i - 1)) | |
676 | > BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i))) | |
677 | { | |
59527da0 JB |
678 | CORE_ADDR start |
679 | = BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i)); | |
c906108c | 680 | |
b98664d3 | 681 | complaint (_("block at %s out of order"), |
bb599908 | 682 | hex_string ((LONGEST) start)); |
c906108c SS |
683 | } |
684 | } | |
685 | } | |
c906108c SS |
686 | |
687 | return (blockvector); | |
688 | } | |
689 | \f | |
690 | /* Start recording information about source code that came from an | |
691 | included (or otherwise merged-in) source file with a different | |
4d663531 | 692 | name. NAME is the name of the file (cannot be NULL). */ |
c906108c SS |
693 | |
694 | void | |
4d663531 | 695 | start_subfile (const char *name) |
c906108c | 696 | { |
43f3e411 | 697 | const char *subfile_dirname; |
52f0bd74 | 698 | struct subfile *subfile; |
c906108c | 699 | |
43f3e411 DE |
700 | gdb_assert (buildsym_compunit != NULL); |
701 | ||
702 | subfile_dirname = buildsym_compunit->comp_dir; | |
c906108c | 703 | |
43f3e411 DE |
704 | /* See if this subfile is already registered. */ |
705 | ||
706 | for (subfile = buildsym_compunit->subfiles; subfile; subfile = subfile->next) | |
c906108c | 707 | { |
84ba0adf DJ |
708 | char *subfile_name; |
709 | ||
710 | /* If NAME is an absolute path, and this subfile is not, then | |
711 | attempt to create an absolute path to compare. */ | |
712 | if (IS_ABSOLUTE_PATH (name) | |
713 | && !IS_ABSOLUTE_PATH (subfile->name) | |
43f3e411 DE |
714 | && subfile_dirname != NULL) |
715 | subfile_name = concat (subfile_dirname, SLASH_STRING, | |
6eb7ee03 | 716 | subfile->name, (char *) NULL); |
84ba0adf DJ |
717 | else |
718 | subfile_name = subfile->name; | |
719 | ||
720 | if (FILENAME_CMP (subfile_name, name) == 0) | |
c906108c SS |
721 | { |
722 | current_subfile = subfile; | |
84ba0adf DJ |
723 | if (subfile_name != subfile->name) |
724 | xfree (subfile_name); | |
c906108c SS |
725 | return; |
726 | } | |
84ba0adf DJ |
727 | if (subfile_name != subfile->name) |
728 | xfree (subfile_name); | |
c906108c SS |
729 | } |
730 | ||
43f3e411 | 731 | /* This subfile is not known. Add an entry for it. */ |
c906108c | 732 | |
8d749320 | 733 | subfile = XNEW (struct subfile); |
43f3e411 DE |
734 | memset (subfile, 0, sizeof (struct subfile)); |
735 | subfile->buildsym_compunit = buildsym_compunit; | |
736 | ||
737 | subfile->next = buildsym_compunit->subfiles; | |
738 | buildsym_compunit->subfiles = subfile; | |
739 | ||
c906108c SS |
740 | current_subfile = subfile; |
741 | ||
b74db436 | 742 | subfile->name = xstrdup (name); |
c906108c SS |
743 | |
744 | /* Initialize line-number recording for this subfile. */ | |
745 | subfile->line_vector = NULL; | |
746 | ||
747 | /* Default the source language to whatever can be deduced from the | |
748 | filename. If nothing can be deduced (such as for a C/C++ include | |
749 | file with a ".h" extension), then inherit whatever language the | |
750 | previous subfile had. This kludgery is necessary because there | |
751 | is no standard way in some object formats to record the source | |
752 | language. Also, when symtabs are allocated we try to deduce a | |
753 | language then as well, but it is too late for us to use that | |
754 | information while reading symbols, since symtabs aren't allocated | |
755 | until after all the symbols have been processed for a given | |
4a64f543 | 756 | source file. */ |
c906108c SS |
757 | |
758 | subfile->language = deduce_language_from_filename (subfile->name); | |
5aafa1cc PM |
759 | if (subfile->language == language_unknown |
760 | && subfile->next != NULL) | |
c906108c SS |
761 | { |
762 | subfile->language = subfile->next->language; | |
763 | } | |
764 | ||
25caa7a8 | 765 | /* If the filename of this subfile ends in .C, then change the |
c906108c | 766 | language of any pending subfiles from C to C++. We also accept |
25caa7a8 | 767 | any other C++ suffixes accepted by deduce_language_from_filename. */ |
c906108c SS |
768 | /* Likewise for f2c. */ |
769 | ||
770 | if (subfile->name) | |
771 | { | |
772 | struct subfile *s; | |
773 | enum language sublang = deduce_language_from_filename (subfile->name); | |
774 | ||
775 | if (sublang == language_cplus || sublang == language_fortran) | |
43f3e411 | 776 | for (s = buildsym_compunit->subfiles; s != NULL; s = s->next) |
c906108c SS |
777 | if (s->language == language_c) |
778 | s->language = sublang; | |
779 | } | |
780 | ||
781 | /* And patch up this file if necessary. */ | |
782 | if (subfile->language == language_c | |
783 | && subfile->next != NULL | |
784 | && (subfile->next->language == language_cplus | |
785 | || subfile->next->language == language_fortran)) | |
786 | { | |
787 | subfile->language = subfile->next->language; | |
788 | } | |
789 | } | |
790 | ||
43f3e411 | 791 | /* Delete the buildsym compunit. */ |
7bab9b58 DE |
792 | |
793 | static void | |
43f3e411 | 794 | free_buildsym_compunit (void) |
7bab9b58 | 795 | { |
43f3e411 DE |
796 | if (buildsym_compunit == NULL) |
797 | return; | |
b248663f | 798 | delete buildsym_compunit; |
43f3e411 | 799 | buildsym_compunit = NULL; |
0ab9ce85 | 800 | current_subfile = NULL; |
7bab9b58 DE |
801 | } |
802 | ||
c906108c SS |
803 | /* For stabs readers, the first N_SO symbol is assumed to be the |
804 | source file name, and the subfile struct is initialized using that | |
805 | assumption. If another N_SO symbol is later seen, immediately | |
806 | following the first one, then the first one is assumed to be the | |
807 | directory name and the second one is really the source file name. | |
808 | ||
809 | So we have to patch up the subfile struct by moving the old name | |
810 | value to dirname and remembering the new name. Some sanity | |
811 | checking is performed to ensure that the state of the subfile | |
812 | struct is reasonable and that the old name we are assuming to be a | |
4a64f543 | 813 | directory name actually is (by checking for a trailing '/'). */ |
c906108c SS |
814 | |
815 | void | |
a121b7c1 | 816 | patch_subfile_names (struct subfile *subfile, const char *name) |
c906108c | 817 | { |
43f3e411 DE |
818 | if (subfile != NULL |
819 | && buildsym_compunit->comp_dir == NULL | |
820 | && subfile->name != NULL | |
0ba1096a | 821 | && IS_DIR_SEPARATOR (subfile->name[strlen (subfile->name) - 1])) |
c906108c | 822 | { |
43f3e411 | 823 | buildsym_compunit->comp_dir = subfile->name; |
1b36a34b | 824 | subfile->name = xstrdup (name); |
46212e0b | 825 | set_last_source_file (name); |
c906108c SS |
826 | |
827 | /* Default the source language to whatever can be deduced from | |
828 | the filename. If nothing can be deduced (such as for a C/C++ | |
829 | include file with a ".h" extension), then inherit whatever | |
830 | language the previous subfile had. This kludgery is | |
831 | necessary because there is no standard way in some object | |
832 | formats to record the source language. Also, when symtabs | |
833 | are allocated we try to deduce a language then as well, but | |
834 | it is too late for us to use that information while reading | |
835 | symbols, since symtabs aren't allocated until after all the | |
4a64f543 | 836 | symbols have been processed for a given source file. */ |
c906108c SS |
837 | |
838 | subfile->language = deduce_language_from_filename (subfile->name); | |
5aafa1cc PM |
839 | if (subfile->language == language_unknown |
840 | && subfile->next != NULL) | |
c906108c SS |
841 | { |
842 | subfile->language = subfile->next->language; | |
843 | } | |
844 | } | |
845 | } | |
846 | \f | |
847 | /* Handle the N_BINCL and N_EINCL symbol types that act like N_SOL for | |
848 | switching source files (different subfiles, as we call them) within | |
849 | one object file, but using a stack rather than in an arbitrary | |
850 | order. */ | |
851 | ||
852 | void | |
853 | push_subfile (void) | |
854 | { | |
8d749320 | 855 | struct subfile_stack *tem = XNEW (struct subfile_stack); |
c906108c SS |
856 | |
857 | tem->next = subfile_stack; | |
858 | subfile_stack = tem; | |
859 | if (current_subfile == NULL || current_subfile->name == NULL) | |
860 | { | |
4a64f543 MS |
861 | internal_error (__FILE__, __LINE__, |
862 | _("failed internal consistency check")); | |
c906108c SS |
863 | } |
864 | tem->name = current_subfile->name; | |
865 | } | |
866 | ||
867 | char * | |
868 | pop_subfile (void) | |
869 | { | |
52f0bd74 AC |
870 | char *name; |
871 | struct subfile_stack *link = subfile_stack; | |
c906108c SS |
872 | |
873 | if (link == NULL) | |
874 | { | |
3e43a32a MS |
875 | internal_error (__FILE__, __LINE__, |
876 | _("failed internal consistency check")); | |
c906108c SS |
877 | } |
878 | name = link->name; | |
879 | subfile_stack = link->next; | |
b8c9b27d | 880 | xfree ((void *) link); |
c906108c SS |
881 | return (name); |
882 | } | |
883 | \f | |
884 | /* Add a linetable entry for line number LINE and address PC to the | |
885 | line vector for SUBFILE. */ | |
886 | ||
887 | void | |
aa1ee363 | 888 | record_line (struct subfile *subfile, int line, CORE_ADDR pc) |
c906108c SS |
889 | { |
890 | struct linetable_entry *e; | |
c906108c | 891 | |
cc59ec59 | 892 | /* Ignore the dummy line number in libg.o */ |
c906108c SS |
893 | if (line == 0xffff) |
894 | { | |
895 | return; | |
896 | } | |
897 | ||
898 | /* Make sure line vector exists and is big enough. */ | |
899 | if (!subfile->line_vector) | |
900 | { | |
901 | subfile->line_vector_length = INITIAL_LINE_VECTOR_LENGTH; | |
902 | subfile->line_vector = (struct linetable *) | |
903 | xmalloc (sizeof (struct linetable) | |
c5aa993b | 904 | + subfile->line_vector_length * sizeof (struct linetable_entry)); |
c906108c SS |
905 | subfile->line_vector->nitems = 0; |
906 | have_line_numbers = 1; | |
907 | } | |
908 | ||
909 | if (subfile->line_vector->nitems + 1 >= subfile->line_vector_length) | |
910 | { | |
911 | subfile->line_vector_length *= 2; | |
912 | subfile->line_vector = (struct linetable *) | |
913 | xrealloc ((char *) subfile->line_vector, | |
914 | (sizeof (struct linetable) | |
915 | + (subfile->line_vector_length | |
916 | * sizeof (struct linetable_entry)))); | |
917 | } | |
918 | ||
607ae575 DJ |
919 | /* Normally, we treat lines as unsorted. But the end of sequence |
920 | marker is special. We sort line markers at the same PC by line | |
921 | number, so end of sequence markers (which have line == 0) appear | |
922 | first. This is right if the marker ends the previous function, | |
923 | and there is no padding before the next function. But it is | |
924 | wrong if the previous line was empty and we are now marking a | |
925 | switch to a different subfile. We must leave the end of sequence | |
926 | marker at the end of this group of lines, not sort the empty line | |
927 | to after the marker. The easiest way to accomplish this is to | |
928 | delete any empty lines from our table, if they are followed by | |
929 | end of sequence markers. All we lose is the ability to set | |
930 | breakpoints at some lines which contain no instructions | |
931 | anyway. */ | |
932 | if (line == 0 && subfile->line_vector->nitems > 0) | |
933 | { | |
934 | e = subfile->line_vector->item + subfile->line_vector->nitems - 1; | |
935 | while (subfile->line_vector->nitems > 0 && e->pc == pc) | |
936 | { | |
937 | e--; | |
938 | subfile->line_vector->nitems--; | |
939 | } | |
940 | } | |
941 | ||
c906108c SS |
942 | e = subfile->line_vector->item + subfile->line_vector->nitems++; |
943 | e->line = line; | |
607ae575 | 944 | e->pc = pc; |
c906108c SS |
945 | } |
946 | ||
947 | /* Needed in order to sort line tables from IBM xcoff files. Sigh! */ | |
948 | ||
949 | static int | |
950 | compare_line_numbers (const void *ln1p, const void *ln2p) | |
951 | { | |
952 | struct linetable_entry *ln1 = (struct linetable_entry *) ln1p; | |
953 | struct linetable_entry *ln2 = (struct linetable_entry *) ln2p; | |
954 | ||
955 | /* Note: this code does not assume that CORE_ADDRs can fit in ints. | |
956 | Please keep it that way. */ | |
957 | if (ln1->pc < ln2->pc) | |
958 | return -1; | |
959 | ||
960 | if (ln1->pc > ln2->pc) | |
961 | return 1; | |
962 | ||
963 | /* If pc equal, sort by line. I'm not sure whether this is optimum | |
964 | behavior (see comment at struct linetable in symtab.h). */ | |
965 | return ln1->line - ln2->line; | |
966 | } | |
967 | \f | |
43f3e411 DE |
968 | /* See buildsym.h. */ |
969 | ||
970 | struct compunit_symtab * | |
971 | buildsym_compunit_symtab (void) | |
972 | { | |
973 | gdb_assert (buildsym_compunit != NULL); | |
974 | ||
975 | return buildsym_compunit->compunit_symtab; | |
976 | } | |
977 | ||
978 | /* See buildsym.h. */ | |
fc474241 DE |
979 | |
980 | struct macro_table * | |
43f3e411 | 981 | get_macro_table (void) |
fc474241 | 982 | { |
43f3e411 DE |
983 | struct objfile *objfile; |
984 | ||
985 | gdb_assert (buildsym_compunit != NULL); | |
986 | ||
987 | objfile = buildsym_compunit->objfile; | |
4d663531 | 988 | |
fc474241 | 989 | if (! pending_macros) |
43f3e411 DE |
990 | { |
991 | pending_macros = new_macro_table (&objfile->per_bfd->storage_obstack, | |
992 | objfile->per_bfd->macro_cache, | |
993 | buildsym_compunit->compunit_symtab); | |
994 | } | |
995 | ||
fc474241 DE |
996 | return pending_macros; |
997 | } | |
998 | \f | |
0ab9ce85 DE |
999 | /* Init state to prepare for building a symtab. |
1000 | Note: This can't be done in buildsym_init because dbxread.c and xcoffread.c | |
1001 | can call start_symtab+end_symtab multiple times after one call to | |
1002 | buildsym_init. */ | |
1003 | ||
1004 | static void | |
1005 | prepare_for_building (const char *name, CORE_ADDR start_addr) | |
1006 | { | |
1007 | set_last_source_file (name); | |
1008 | last_source_start_addr = start_addr; | |
1009 | ||
1010 | local_symbols = NULL; | |
22cee43f | 1011 | local_using_directives = NULL; |
0ab9ce85 DE |
1012 | within_function = 0; |
1013 | have_line_numbers = 0; | |
1014 | ||
1015 | context_stack_depth = 0; | |
1016 | ||
1017 | /* These should have been reset either by successful completion of building | |
33c7c59d | 1018 | a symtab, or by the scoped_free_pendings destructor. */ |
0ab9ce85 DE |
1019 | gdb_assert (file_symbols == NULL); |
1020 | gdb_assert (global_symbols == NULL); | |
22cee43f | 1021 | gdb_assert (global_using_directives == NULL); |
0ab9ce85 DE |
1022 | gdb_assert (pending_macros == NULL); |
1023 | gdb_assert (pending_addrmap == NULL); | |
1024 | gdb_assert (current_subfile == NULL); | |
1025 | } | |
1026 | ||
4d663531 | 1027 | /* Start a new symtab for a new source file in OBJFILE. Called, for example, |
c906108c SS |
1028 | when a stabs symbol of type N_SO is seen, or when a DWARF |
1029 | TAG_compile_unit DIE is seen. It indicates the start of data for | |
0b0287a1 DE |
1030 | one original source file. |
1031 | ||
5ffa0793 PA |
1032 | NAME is the name of the file (cannot be NULL). COMP_DIR is the |
1033 | directory in which the file was compiled (or NULL if not known). | |
1034 | START_ADDR is the lowest address of objects in the file (or 0 if | |
1035 | not known). LANGUAGE is the language of the source file, or | |
1036 | language_unknown if not known, in which case it'll be deduced from | |
1037 | the filename. */ | |
c906108c | 1038 | |
43f3e411 | 1039 | struct compunit_symtab * |
4d663531 | 1040 | start_symtab (struct objfile *objfile, const char *name, const char *comp_dir, |
5ffa0793 | 1041 | CORE_ADDR start_addr, enum language language) |
c906108c | 1042 | { |
0ab9ce85 | 1043 | prepare_for_building (name, start_addr); |
43f3e411 | 1044 | |
b248663f TT |
1045 | buildsym_compunit = new struct buildsym_compunit (objfile, comp_dir, |
1046 | language); | |
43f3e411 | 1047 | |
0ab9ce85 | 1048 | /* Allocate the compunit symtab now. The caller needs it to allocate |
43f3e411 DE |
1049 | non-primary symtabs. It is also needed by get_macro_table. */ |
1050 | buildsym_compunit->compunit_symtab = allocate_compunit_symtab (objfile, | |
1051 | name); | |
1052 | ||
1053 | /* Build the subfile for NAME (the main source file) so that we can record | |
1054 | a pointer to it for later. | |
1055 | IMPORTANT: Do not allocate a struct symtab for NAME here. | |
1056 | It can happen that the debug info provides a different path to NAME than | |
1057 | DIRNAME,NAME. We cope with this in watch_main_source_file_lossage but | |
1058 | that only works if the main_subfile doesn't have a symtab yet. */ | |
4d663531 | 1059 | start_subfile (name); |
7bab9b58 DE |
1060 | /* Save this so that we don't have to go looking for it at the end |
1061 | of the subfiles list. */ | |
43f3e411 DE |
1062 | buildsym_compunit->main_subfile = current_subfile; |
1063 | ||
43f3e411 | 1064 | return buildsym_compunit->compunit_symtab; |
6d30eef8 DE |
1065 | } |
1066 | ||
1067 | /* Restart compilation for a symtab. | |
0ab9ce85 DE |
1068 | CUST is the result of end_expandable_symtab. |
1069 | NAME, START_ADDR are the source file we are resuming with. | |
1070 | ||
6d30eef8 | 1071 | This is used when a symtab is built from multiple sources. |
0ab9ce85 DE |
1072 | The symtab is first built with start_symtab/end_expandable_symtab |
1073 | and then for each additional piece call restart_symtab/augment_*_symtab. | |
1074 | Note: At the moment there is only augment_type_symtab. */ | |
6d30eef8 DE |
1075 | |
1076 | void | |
0ab9ce85 DE |
1077 | restart_symtab (struct compunit_symtab *cust, |
1078 | const char *name, CORE_ADDR start_addr) | |
6d30eef8 | 1079 | { |
0ab9ce85 | 1080 | prepare_for_building (name, start_addr); |
c906108c | 1081 | |
b248663f TT |
1082 | buildsym_compunit |
1083 | = new struct buildsym_compunit (COMPUNIT_OBJFILE (cust), | |
1084 | COMPUNIT_DIRNAME (cust), | |
1085 | compunit_language (cust)); | |
0ab9ce85 | 1086 | buildsym_compunit->compunit_symtab = cust; |
c906108c SS |
1087 | } |
1088 | ||
4a64f543 MS |
1089 | /* Subroutine of end_symtab to simplify it. Look for a subfile that |
1090 | matches the main source file's basename. If there is only one, and | |
1091 | if the main source file doesn't have any symbol or line number | |
1092 | information, then copy this file's symtab and line_vector to the | |
1093 | main source file's subfile and discard the other subfile. This can | |
1094 | happen because of a compiler bug or from the user playing games | |
1095 | with #line or from things like a distributed build system that | |
43f3e411 DE |
1096 | manipulates the debug info. This can also happen from an innocent |
1097 | symlink in the paths, we don't canonicalize paths here. */ | |
4584e32e DE |
1098 | |
1099 | static void | |
1100 | watch_main_source_file_lossage (void) | |
1101 | { | |
43f3e411 | 1102 | struct subfile *mainsub, *subfile; |
4584e32e | 1103 | |
43f3e411 | 1104 | /* We have to watch for buildsym_compunit == NULL here. It's a quirk of |
7bab9b58 | 1105 | end_symtab, it can return NULL so there may not be a main subfile. */ |
43f3e411 | 1106 | if (buildsym_compunit == NULL) |
7bab9b58 | 1107 | return; |
4584e32e | 1108 | |
43f3e411 DE |
1109 | /* Get the main source file. */ |
1110 | mainsub = buildsym_compunit->main_subfile; | |
1111 | ||
4a64f543 | 1112 | /* If the main source file doesn't have any line number or symbol |
7bab9b58 | 1113 | info, look for an alias in another subfile. */ |
4584e32e | 1114 | |
43f3e411 DE |
1115 | if (mainsub->line_vector == NULL |
1116 | && mainsub->symtab == NULL) | |
4584e32e | 1117 | { |
43f3e411 | 1118 | const char *mainbase = lbasename (mainsub->name); |
4584e32e DE |
1119 | int nr_matches = 0; |
1120 | struct subfile *prevsub; | |
1121 | struct subfile *mainsub_alias = NULL; | |
1122 | struct subfile *prev_mainsub_alias = NULL; | |
1123 | ||
1124 | prevsub = NULL; | |
43f3e411 DE |
1125 | for (subfile = buildsym_compunit->subfiles; |
1126 | subfile != NULL; | |
4584e32e DE |
1127 | subfile = subfile->next) |
1128 | { | |
43f3e411 DE |
1129 | if (subfile == mainsub) |
1130 | continue; | |
0ba1096a | 1131 | if (filename_cmp (lbasename (subfile->name), mainbase) == 0) |
4584e32e DE |
1132 | { |
1133 | ++nr_matches; | |
1134 | mainsub_alias = subfile; | |
1135 | prev_mainsub_alias = prevsub; | |
1136 | } | |
1137 | prevsub = subfile; | |
1138 | } | |
1139 | ||
1140 | if (nr_matches == 1) | |
1141 | { | |
43f3e411 | 1142 | gdb_assert (mainsub_alias != NULL && mainsub_alias != mainsub); |
4584e32e DE |
1143 | |
1144 | /* Found a match for the main source file. | |
1145 | Copy its line_vector and symtab to the main subfile | |
1146 | and then discard it. */ | |
1147 | ||
43f3e411 DE |
1148 | mainsub->line_vector = mainsub_alias->line_vector; |
1149 | mainsub->line_vector_length = mainsub_alias->line_vector_length; | |
1150 | mainsub->symtab = mainsub_alias->symtab; | |
4584e32e DE |
1151 | |
1152 | if (prev_mainsub_alias == NULL) | |
43f3e411 | 1153 | buildsym_compunit->subfiles = mainsub_alias->next; |
4584e32e DE |
1154 | else |
1155 | prev_mainsub_alias->next = mainsub_alias->next; | |
98387a29 | 1156 | xfree (mainsub_alias->name); |
4584e32e DE |
1157 | xfree (mainsub_alias); |
1158 | } | |
1159 | } | |
1160 | } | |
1161 | ||
0ab9ce85 DE |
1162 | /* Reset state after a successful building of a symtab. |
1163 | This exists because dbxread.c and xcoffread.c can call | |
1164 | start_symtab+end_symtab multiple times after one call to buildsym_init, | |
33c7c59d | 1165 | and before the scoped_free_pendings destructor is called. |
0ab9ce85 | 1166 | We keep the free_pendings list around for dbx/xcoff sake. */ |
6d30eef8 DE |
1167 | |
1168 | static void | |
1169 | reset_symtab_globals (void) | |
1170 | { | |
46212e0b | 1171 | set_last_source_file (NULL); |
0ab9ce85 DE |
1172 | |
1173 | local_symbols = NULL; | |
22cee43f | 1174 | local_using_directives = NULL; |
0ab9ce85 DE |
1175 | file_symbols = NULL; |
1176 | global_symbols = NULL; | |
22cee43f | 1177 | global_using_directives = NULL; |
0ab9ce85 DE |
1178 | |
1179 | /* We don't free pending_macros here because if the symtab was successfully | |
1180 | built then ownership was transferred to the symtab. */ | |
6d30eef8 | 1181 | pending_macros = NULL; |
0ab9ce85 | 1182 | |
6d30eef8 | 1183 | if (pending_addrmap) |
0ab9ce85 DE |
1184 | obstack_free (&pending_addrmap_obstack, NULL); |
1185 | pending_addrmap = NULL; | |
1186 | ||
1187 | free_buildsym_compunit (); | |
6d30eef8 DE |
1188 | } |
1189 | ||
4359dff1 JK |
1190 | /* Implementation of the first part of end_symtab. It allows modifying |
1191 | STATIC_BLOCK before it gets finalized by end_symtab_from_static_block. | |
1192 | If the returned value is NULL there is no blockvector created for | |
1193 | this symtab (you still must call end_symtab_from_static_block). | |
c906108c | 1194 | |
4359dff1 JK |
1195 | END_ADDR is the same as for end_symtab: the address of the end of the |
1196 | file's text. | |
c906108c | 1197 | |
4359dff1 | 1198 | If EXPANDABLE is non-zero the STATIC_BLOCK dictionary is made |
36586728 TT |
1199 | expandable. |
1200 | ||
1201 | If REQUIRED is non-zero, then a symtab is created even if it does | |
1202 | not contain any symbols. */ | |
6d30eef8 | 1203 | |
4359dff1 | 1204 | struct block * |
4d663531 | 1205 | end_symtab_get_static_block (CORE_ADDR end_addr, int expandable, int required) |
c906108c | 1206 | { |
43f3e411 | 1207 | struct objfile *objfile = buildsym_compunit->objfile; |
4d663531 | 1208 | |
c906108c SS |
1209 | /* Finish the lexical context of the last function in the file; pop |
1210 | the context stack. */ | |
1211 | ||
1212 | if (context_stack_depth > 0) | |
1213 | { | |
4359dff1 JK |
1214 | struct context_stack *cstk = pop_context (); |
1215 | ||
c906108c | 1216 | /* Make a block for the local symbols within. */ |
63e43d3a | 1217 | finish_block (cstk->name, &local_symbols, cstk->old_blocks, NULL, |
4d663531 | 1218 | cstk->start_addr, end_addr); |
c906108c SS |
1219 | |
1220 | if (context_stack_depth > 0) | |
1221 | { | |
1222 | /* This is said to happen with SCO. The old coffread.c | |
1223 | code simply emptied the context stack, so we do the | |
1224 | same. FIXME: Find out why it is happening. This is not | |
1225 | believed to happen in most cases (even for coffread.c); | |
1226 | it used to be an abort(). */ | |
b98664d3 | 1227 | complaint (_("Context stack not empty in end_symtab")); |
c906108c SS |
1228 | context_stack_depth = 0; |
1229 | } | |
1230 | } | |
1231 | ||
1232 | /* Reordered executables may have out of order pending blocks; if | |
1233 | OBJF_REORDERED is true, then sort the pending blocks. */ | |
6d30eef8 | 1234 | |
c906108c SS |
1235 | if ((objfile->flags & OBJF_REORDERED) && pending_blocks) |
1236 | { | |
07e7f39f | 1237 | struct pending_block *pb; |
c906108c | 1238 | |
b05628f0 | 1239 | std::vector<block *> barray; |
c906108c | 1240 | |
07e7f39f | 1241 | for (pb = pending_blocks; pb != NULL; pb = pb->next) |
b05628f0 | 1242 | barray.push_back (pb->block); |
07e7f39f | 1243 | |
5033013f UW |
1244 | /* Sort blocks by start address in descending order. Blocks with the |
1245 | same start address must remain in the original order to preserve | |
1246 | inline function caller/callee relationships. */ | |
1247 | std::stable_sort (barray.begin (), barray.end (), | |
1248 | [] (const block *a, const block *b) | |
1249 | { | |
1250 | return BLOCK_START (a) > BLOCK_START (b); | |
1251 | }); | |
07e7f39f | 1252 | |
b05628f0 | 1253 | int i = 0; |
07e7f39f | 1254 | for (pb = pending_blocks; pb != NULL; pb = pb->next) |
b05628f0 | 1255 | pb->block = barray[i++]; |
c906108c SS |
1256 | } |
1257 | ||
1258 | /* Cleanup any undefined types that have been left hanging around | |
1259 | (this needs to be done before the finish_blocks so that | |
1260 | file_symbols is still good). | |
c5aa993b | 1261 | |
0a0edcd5 | 1262 | Both cleanup_undefined_stabs_types and finish_global_stabs are stabs |
c906108c SS |
1263 | specific, but harmless for other symbol readers, since on gdb |
1264 | startup or when finished reading stabs, the state is set so these | |
1265 | are no-ops. FIXME: Is this handled right in case of QUIT? Can | |
1266 | we make this cleaner? */ | |
1267 | ||
0a0edcd5 | 1268 | cleanup_undefined_stabs_types (objfile); |
c906108c SS |
1269 | finish_global_stabs (objfile); |
1270 | ||
36586728 TT |
1271 | if (!required |
1272 | && pending_blocks == NULL | |
c906108c SS |
1273 | && file_symbols == NULL |
1274 | && global_symbols == NULL | |
99d9066e | 1275 | && have_line_numbers == 0 |
22cee43f PMR |
1276 | && pending_macros == NULL |
1277 | && global_using_directives == NULL) | |
c906108c | 1278 | { |
4359dff1 JK |
1279 | /* Ignore symtabs that have no functions with real debugging info. */ |
1280 | return NULL; | |
1281 | } | |
1282 | else | |
1283 | { | |
1284 | /* Define the STATIC_BLOCK. */ | |
63e43d3a | 1285 | return finish_block_internal (NULL, &file_symbols, NULL, NULL, |
4d663531 | 1286 | last_source_start_addr, end_addr, |
4359dff1 JK |
1287 | 0, expandable); |
1288 | } | |
1289 | } | |
1290 | ||
7bab9b58 DE |
1291 | /* Subroutine of end_symtab_from_static_block to simplify it. |
1292 | Handle the "have blockvector" case. | |
1293 | See end_symtab_from_static_block for a description of the arguments. */ | |
1294 | ||
43f3e411 | 1295 | static struct compunit_symtab * |
7bab9b58 | 1296 | end_symtab_with_blockvector (struct block *static_block, |
4d663531 | 1297 | int section, int expandable) |
4359dff1 | 1298 | { |
43f3e411 DE |
1299 | struct objfile *objfile = buildsym_compunit->objfile; |
1300 | struct compunit_symtab *cu = buildsym_compunit->compunit_symtab; | |
7bab9b58 | 1301 | struct symtab *symtab; |
4359dff1 JK |
1302 | struct blockvector *blockvector; |
1303 | struct subfile *subfile; | |
7bab9b58 | 1304 | CORE_ADDR end_addr; |
4359dff1 | 1305 | |
7bab9b58 | 1306 | gdb_assert (static_block != NULL); |
43f3e411 DE |
1307 | gdb_assert (buildsym_compunit != NULL); |
1308 | gdb_assert (buildsym_compunit->subfiles != NULL); | |
7bab9b58 DE |
1309 | |
1310 | end_addr = BLOCK_END (static_block); | |
1311 | ||
1312 | /* Create the GLOBAL_BLOCK and build the blockvector. */ | |
63e43d3a | 1313 | finish_block_internal (NULL, &global_symbols, NULL, NULL, |
4d663531 | 1314 | last_source_start_addr, end_addr, |
7bab9b58 | 1315 | 1, expandable); |
43f3e411 | 1316 | blockvector = make_blockvector (); |
c906108c | 1317 | |
f56ce883 DE |
1318 | /* Read the line table if it has to be read separately. |
1319 | This is only used by xcoffread.c. */ | |
c295b2e5 | 1320 | if (objfile->sf->sym_read_linetable != NULL) |
f56ce883 | 1321 | objfile->sf->sym_read_linetable (objfile); |
c906108c | 1322 | |
4584e32e DE |
1323 | /* Handle the case where the debug info specifies a different path |
1324 | for the main source file. It can cause us to lose track of its | |
1325 | line number information. */ | |
1326 | watch_main_source_file_lossage (); | |
1327 | ||
43f3e411 DE |
1328 | /* Now create the symtab objects proper, if not already done, |
1329 | one for each subfile. */ | |
c906108c | 1330 | |
43f3e411 DE |
1331 | for (subfile = buildsym_compunit->subfiles; |
1332 | subfile != NULL; | |
1333 | subfile = subfile->next) | |
c906108c SS |
1334 | { |
1335 | int linetablesize = 0; | |
c906108c | 1336 | |
7bab9b58 | 1337 | if (subfile->line_vector) |
c906108c | 1338 | { |
7bab9b58 DE |
1339 | linetablesize = sizeof (struct linetable) + |
1340 | subfile->line_vector->nitems * sizeof (struct linetable_entry); | |
1341 | ||
1342 | /* Like the pending blocks, the line table may be | |
1343 | scrambled in reordered executables. Sort it if | |
1344 | OBJF_REORDERED is true. */ | |
1345 | if (objfile->flags & OBJF_REORDERED) | |
1346 | qsort (subfile->line_vector->item, | |
1347 | subfile->line_vector->nitems, | |
1348 | sizeof (struct linetable_entry), compare_line_numbers); | |
1349 | } | |
9182c5bc | 1350 | |
7bab9b58 DE |
1351 | /* Allocate a symbol table if necessary. */ |
1352 | if (subfile->symtab == NULL) | |
43f3e411 | 1353 | subfile->symtab = allocate_symtab (cu, subfile->name); |
7bab9b58 | 1354 | symtab = subfile->symtab; |
9182c5bc | 1355 | |
7bab9b58 | 1356 | /* Fill in its components. */ |
43f3e411 | 1357 | |
7bab9b58 DE |
1358 | if (subfile->line_vector) |
1359 | { | |
1360 | /* Reallocate the line table on the symbol obstack. */ | |
8435453b | 1361 | SYMTAB_LINETABLE (symtab) = (struct linetable *) |
7bab9b58 | 1362 | obstack_alloc (&objfile->objfile_obstack, linetablesize); |
8435453b DE |
1363 | memcpy (SYMTAB_LINETABLE (symtab), subfile->line_vector, |
1364 | linetablesize); | |
c906108c | 1365 | } |
24be086d | 1366 | else |
c906108c | 1367 | { |
8435453b | 1368 | SYMTAB_LINETABLE (symtab) = NULL; |
c906108c | 1369 | } |
c906108c | 1370 | |
7bab9b58 DE |
1371 | /* Use whatever language we have been using for this |
1372 | subfile, not the one that was deduced in allocate_symtab | |
1373 | from the filename. We already did our own deducing when | |
1374 | we created the subfile, and we may have altered our | |
1375 | opinion of what language it is from things we found in | |
1376 | the symbols. */ | |
1377 | symtab->language = subfile->language; | |
43f3e411 | 1378 | } |
c906108c | 1379 | |
43f3e411 DE |
1380 | /* Make sure the symtab of main_subfile is the first in its list. */ |
1381 | { | |
1382 | struct symtab *main_symtab, *prev_symtab; | |
1383 | ||
1384 | main_symtab = buildsym_compunit->main_subfile->symtab; | |
1385 | prev_symtab = NULL; | |
1386 | ALL_COMPUNIT_FILETABS (cu, symtab) | |
1387 | { | |
1388 | if (symtab == main_symtab) | |
1389 | { | |
1390 | if (prev_symtab != NULL) | |
1391 | { | |
1392 | prev_symtab->next = main_symtab->next; | |
1393 | main_symtab->next = COMPUNIT_FILETABS (cu); | |
1394 | COMPUNIT_FILETABS (cu) = main_symtab; | |
1395 | } | |
1396 | break; | |
1397 | } | |
1398 | prev_symtab = symtab; | |
1399 | } | |
1400 | gdb_assert (main_symtab == COMPUNIT_FILETABS (cu)); | |
1401 | } | |
84a146c9 | 1402 | |
0ab9ce85 | 1403 | /* Fill out the compunit symtab. */ |
84a146c9 | 1404 | |
43f3e411 DE |
1405 | if (buildsym_compunit->comp_dir != NULL) |
1406 | { | |
1407 | /* Reallocate the dirname on the symbol obstack. */ | |
1408 | COMPUNIT_DIRNAME (cu) | |
224c3ddb SM |
1409 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, |
1410 | buildsym_compunit->comp_dir, | |
1411 | strlen (buildsym_compunit->comp_dir)); | |
c906108c SS |
1412 | } |
1413 | ||
43f3e411 DE |
1414 | /* Save the debug format string (if any) in the symtab. */ |
1415 | COMPUNIT_DEBUGFORMAT (cu) = buildsym_compunit->debugformat; | |
1416 | ||
1417 | /* Similarly for the producer. */ | |
1418 | COMPUNIT_PRODUCER (cu) = buildsym_compunit->producer; | |
1419 | ||
1420 | COMPUNIT_BLOCKVECTOR (cu) = blockvector; | |
7bab9b58 | 1421 | { |
43f3e411 | 1422 | struct block *b = BLOCKVECTOR_BLOCK (blockvector, GLOBAL_BLOCK); |
cb1df416 | 1423 | |
43f3e411 | 1424 | set_block_compunit_symtab (b, cu); |
7bab9b58 | 1425 | } |
cb1df416 | 1426 | |
43f3e411 DE |
1427 | COMPUNIT_BLOCK_LINE_SECTION (cu) = section; |
1428 | ||
1429 | COMPUNIT_MACRO_TABLE (cu) = pending_macros; | |
1430 | ||
7bab9b58 DE |
1431 | /* Default any symbols without a specified symtab to the primary symtab. */ |
1432 | { | |
1433 | int block_i; | |
1434 | ||
43f3e411 DE |
1435 | /* The main source file's symtab. */ |
1436 | symtab = COMPUNIT_FILETABS (cu); | |
1437 | ||
7bab9b58 DE |
1438 | for (block_i = 0; block_i < BLOCKVECTOR_NBLOCKS (blockvector); block_i++) |
1439 | { | |
1440 | struct block *block = BLOCKVECTOR_BLOCK (blockvector, block_i); | |
1441 | struct symbol *sym; | |
1442 | struct dict_iterator iter; | |
1443 | ||
1444 | /* Inlined functions may have symbols not in the global or | |
1445 | static symbol lists. */ | |
1446 | if (BLOCK_FUNCTION (block) != NULL) | |
08be3fe3 DE |
1447 | if (symbol_symtab (BLOCK_FUNCTION (block)) == NULL) |
1448 | symbol_set_symtab (BLOCK_FUNCTION (block), symtab); | |
7bab9b58 DE |
1449 | |
1450 | /* Note that we only want to fix up symbols from the local | |
1451 | blocks, not blocks coming from included symtabs. That is why | |
1452 | we use ALL_DICT_SYMBOLS here and not ALL_BLOCK_SYMBOLS. */ | |
1453 | ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym) | |
08be3fe3 DE |
1454 | if (symbol_symtab (sym) == NULL) |
1455 | symbol_set_symtab (sym, symtab); | |
7bab9b58 DE |
1456 | } |
1457 | } | |
edb3359d | 1458 | |
43f3e411 | 1459 | add_compunit_symtab_to_objfile (cu); |
43f3e411 DE |
1460 | |
1461 | return cu; | |
7bab9b58 DE |
1462 | } |
1463 | ||
1464 | /* Implementation of the second part of end_symtab. Pass STATIC_BLOCK | |
1465 | as value returned by end_symtab_get_static_block. | |
1466 | ||
1467 | SECTION is the same as for end_symtab: the section number | |
1468 | (in objfile->section_offsets) of the blockvector and linetable. | |
1469 | ||
1470 | If EXPANDABLE is non-zero the GLOBAL_BLOCK dictionary is made | |
1471 | expandable. */ | |
1472 | ||
43f3e411 | 1473 | struct compunit_symtab * |
7bab9b58 | 1474 | end_symtab_from_static_block (struct block *static_block, |
4d663531 | 1475 | int section, int expandable) |
7bab9b58 | 1476 | { |
43f3e411 | 1477 | struct compunit_symtab *cu; |
7bab9b58 DE |
1478 | |
1479 | if (static_block == NULL) | |
1480 | { | |
0ab9ce85 DE |
1481 | /* Handle the "no blockvector" case. |
1482 | When this happens there is nothing to record, so there's nothing | |
1483 | to do: memory will be freed up later. | |
1484 | ||
1485 | Note: We won't be adding a compunit to the objfile's list of | |
1486 | compunits, so there's nothing to unchain. However, since each symtab | |
1487 | is added to the objfile's obstack we can't free that space. | |
1488 | We could do better, but this is believed to be a sufficiently rare | |
1489 | event. */ | |
43f3e411 | 1490 | cu = NULL; |
7bab9b58 DE |
1491 | } |
1492 | else | |
43f3e411 | 1493 | cu = end_symtab_with_blockvector (static_block, section, expandable); |
cb1df416 | 1494 | |
6d30eef8 DE |
1495 | reset_symtab_globals (); |
1496 | ||
43f3e411 | 1497 | return cu; |
6d30eef8 DE |
1498 | } |
1499 | ||
4359dff1 JK |
1500 | /* Finish the symbol definitions for one main source file, close off |
1501 | all the lexical contexts for that file (creating struct block's for | |
1502 | them), then make the struct symtab for that file and put it in the | |
1503 | list of all such. | |
1504 | ||
1505 | END_ADDR is the address of the end of the file's text. SECTION is | |
1506 | the section number (in objfile->section_offsets) of the blockvector | |
1507 | and linetable. | |
1508 | ||
1509 | Note that it is possible for end_symtab() to return NULL. In | |
1510 | particular, for the DWARF case at least, it will return NULL when | |
1511 | it finds a compilation unit that has exactly one DIE, a | |
1512 | TAG_compile_unit DIE. This can happen when we link in an object | |
1513 | file that was compiled from an empty source file. Returning NULL | |
1514 | is probably not the correct thing to do, because then gdb will | |
1515 | never know about this empty file (FIXME). | |
1516 | ||
1517 | If you need to modify STATIC_BLOCK before it is finalized you should | |
1518 | call end_symtab_get_static_block and end_symtab_from_static_block | |
1519 | yourself. */ | |
6d30eef8 | 1520 | |
43f3e411 | 1521 | struct compunit_symtab * |
4d663531 | 1522 | end_symtab (CORE_ADDR end_addr, int section) |
6d30eef8 | 1523 | { |
4359dff1 JK |
1524 | struct block *static_block; |
1525 | ||
4d663531 DE |
1526 | static_block = end_symtab_get_static_block (end_addr, 0, 0); |
1527 | return end_symtab_from_static_block (static_block, section, 0); | |
6d30eef8 DE |
1528 | } |
1529 | ||
4359dff1 | 1530 | /* Same as end_symtab except create a symtab that can be later added to. */ |
6d30eef8 | 1531 | |
43f3e411 | 1532 | struct compunit_symtab * |
4d663531 | 1533 | end_expandable_symtab (CORE_ADDR end_addr, int section) |
6d30eef8 | 1534 | { |
4359dff1 JK |
1535 | struct block *static_block; |
1536 | ||
4d663531 DE |
1537 | static_block = end_symtab_get_static_block (end_addr, 1, 0); |
1538 | return end_symtab_from_static_block (static_block, section, 1); | |
6d30eef8 DE |
1539 | } |
1540 | ||
1541 | /* Subroutine of augment_type_symtab to simplify it. | |
43f3e411 DE |
1542 | Attach the main source file's symtab to all symbols in PENDING_LIST that |
1543 | don't have one. */ | |
6d30eef8 DE |
1544 | |
1545 | static void | |
43f3e411 DE |
1546 | set_missing_symtab (struct pending *pending_list, |
1547 | struct compunit_symtab *cu) | |
6d30eef8 DE |
1548 | { |
1549 | struct pending *pending; | |
1550 | int i; | |
1551 | ||
1552 | for (pending = pending_list; pending != NULL; pending = pending->next) | |
801e3a5b | 1553 | { |
6d30eef8 DE |
1554 | for (i = 0; i < pending->nsyms; ++i) |
1555 | { | |
08be3fe3 DE |
1556 | if (symbol_symtab (pending->symbol[i]) == NULL) |
1557 | symbol_set_symtab (pending->symbol[i], COMPUNIT_FILETABS (cu)); | |
6d30eef8 | 1558 | } |
801e3a5b | 1559 | } |
6d30eef8 | 1560 | } |
c906108c | 1561 | |
6d30eef8 DE |
1562 | /* Same as end_symtab, but for the case where we're adding more symbols |
1563 | to an existing symtab that is known to contain only type information. | |
1564 | This is the case for DWARF4 Type Units. */ | |
1565 | ||
1566 | void | |
0ab9ce85 | 1567 | augment_type_symtab (void) |
6d30eef8 | 1568 | { |
0ab9ce85 | 1569 | struct compunit_symtab *cust = buildsym_compunit->compunit_symtab; |
43f3e411 | 1570 | const struct blockvector *blockvector = COMPUNIT_BLOCKVECTOR (cust); |
6d30eef8 DE |
1571 | |
1572 | if (context_stack_depth > 0) | |
1573 | { | |
b98664d3 | 1574 | complaint (_("Context stack not empty in augment_type_symtab")); |
6d30eef8 DE |
1575 | context_stack_depth = 0; |
1576 | } | |
1577 | if (pending_blocks != NULL) | |
b98664d3 | 1578 | complaint (_("Blocks in a type symtab")); |
6d30eef8 | 1579 | if (pending_macros != NULL) |
b98664d3 | 1580 | complaint (_("Macro in a type symtab")); |
6d30eef8 | 1581 | if (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 | { | |
fe978cb0 | 1616 | struct context_stack *newobj; |
c906108c SS |
1617 | |
1618 | if (context_stack_depth == context_stack_size) | |
1619 | { | |
1620 | context_stack_size *= 2; | |
1621 | context_stack = (struct context_stack *) | |
1622 | xrealloc ((char *) context_stack, | |
c5aa993b | 1623 | (context_stack_size * sizeof (struct context_stack))); |
c906108c SS |
1624 | } |
1625 | ||
fe978cb0 PA |
1626 | newobj = &context_stack[context_stack_depth++]; |
1627 | newobj->depth = desc; | |
1628 | newobj->locals = local_symbols; | |
1629 | newobj->old_blocks = pending_blocks; | |
1630 | newobj->start_addr = valu; | |
22cee43f | 1631 | newobj->local_using_directives = local_using_directives; |
fe978cb0 | 1632 | newobj->name = NULL; |
c906108c SS |
1633 | |
1634 | local_symbols = NULL; | |
22cee43f | 1635 | local_using_directives = NULL; |
c906108c | 1636 | |
fe978cb0 | 1637 | return newobj; |
c906108c | 1638 | } |
0c5e171a | 1639 | |
a672ef13 | 1640 | /* Pop a context block. Returns the address of the context block just |
4a64f543 | 1641 | popped. */ |
a672ef13 | 1642 | |
0c5e171a KD |
1643 | struct context_stack * |
1644 | pop_context (void) | |
1645 | { | |
1646 | gdb_assert (context_stack_depth > 0); | |
1647 | return (&context_stack[--context_stack_depth]); | |
1648 | } | |
1649 | ||
c906108c | 1650 | \f |
357e46e7 | 1651 | |
4a64f543 | 1652 | /* Compute a small integer hash code for the given name. */ |
c906108c SS |
1653 | |
1654 | int | |
0d5cff50 | 1655 | hashname (const char *name) |
c906108c | 1656 | { |
357e46e7 | 1657 | return (hash(name,strlen(name)) % HASHSIZE); |
c906108c SS |
1658 | } |
1659 | \f | |
1660 | ||
1661 | void | |
554d387d | 1662 | record_debugformat (const char *format) |
c906108c | 1663 | { |
43f3e411 | 1664 | buildsym_compunit->debugformat = format; |
c906108c SS |
1665 | } |
1666 | ||
303b6f5d DJ |
1667 | void |
1668 | record_producer (const char *producer) | |
1669 | { | |
43f3e411 | 1670 | buildsym_compunit->producer = producer; |
303b6f5d DJ |
1671 | } |
1672 | ||
c906108c SS |
1673 | /* Merge the first symbol list SRCLIST into the second symbol list |
1674 | TARGETLIST by repeated calls to add_symbol_to_list(). This | |
1675 | procedure "frees" each link of SRCLIST by adding it to the | |
1676 | free_pendings list. Caller must set SRCLIST to a null list after | |
1677 | calling this function. | |
1678 | ||
4a64f543 | 1679 | Void return. */ |
c906108c SS |
1680 | |
1681 | void | |
1682 | merge_symbol_lists (struct pending **srclist, struct pending **targetlist) | |
1683 | { | |
52f0bd74 | 1684 | int i; |
c906108c SS |
1685 | |
1686 | if (!srclist || !*srclist) | |
1687 | return; | |
1688 | ||
1689 | /* Merge in elements from current link. */ | |
1690 | for (i = 0; i < (*srclist)->nsyms; i++) | |
1691 | add_symbol_to_list ((*srclist)->symbol[i], targetlist); | |
1692 | ||
1693 | /* Recurse on next. */ | |
1694 | merge_symbol_lists (&(*srclist)->next, targetlist); | |
1695 | ||
1696 | /* "Free" the current link. */ | |
1697 | (*srclist)->next = free_pendings; | |
1698 | free_pendings = (*srclist); | |
1699 | } | |
1700 | \f | |
46212e0b TT |
1701 | |
1702 | /* Name of source file whose symbol data we are now processing. This | |
1703 | comes from a symbol of type N_SO for stabs. For Dwarf it comes | |
1704 | from the DW_AT_name attribute of a DW_TAG_compile_unit DIE. */ | |
1705 | ||
1706 | static char *last_source_file; | |
1707 | ||
1708 | /* See buildsym.h. */ | |
1709 | ||
1710 | void | |
1711 | set_last_source_file (const char *name) | |
1712 | { | |
1713 | xfree (last_source_file); | |
1714 | last_source_file = name == NULL ? NULL : xstrdup (name); | |
1715 | } | |
1716 | ||
1717 | /* See buildsym.h. */ | |
1718 | ||
1719 | const char * | |
1720 | get_last_source_file (void) | |
1721 | { | |
1722 | return last_source_file; | |
1723 | } | |
1724 | ||
1725 | \f | |
1726 | ||
c906108c SS |
1727 | /* Initialize anything that needs initializing when starting to read a |
1728 | fresh piece of a symbol file, e.g. reading in the stuff | |
1729 | corresponding to a psymtab. */ | |
1730 | ||
1731 | void | |
fba45db2 | 1732 | buildsym_init (void) |
c906108c | 1733 | { |
fc474241 | 1734 | subfile_stack = NULL; |
801e3a5b | 1735 | |
801e3a5b | 1736 | pending_addrmap_interesting = 0; |
0ab9ce85 DE |
1737 | |
1738 | /* Context stack is initially empty. Allocate first one with room | |
1739 | for a few levels; reuse it forever afterward. */ | |
1740 | if (context_stack == NULL) | |
1741 | { | |
1742 | context_stack_size = INITIAL_CONTEXT_STACK_SIZE; | |
8d749320 | 1743 | context_stack = XNEWVEC (struct context_stack, context_stack_size); |
0ab9ce85 DE |
1744 | } |
1745 | ||
33c7c59d | 1746 | /* Ensure the scoped_free_pendings destructor was called after |
0ab9ce85 DE |
1747 | the last time. */ |
1748 | gdb_assert (free_pendings == NULL); | |
1749 | gdb_assert (pending_blocks == NULL); | |
1750 | gdb_assert (file_symbols == NULL); | |
1751 | gdb_assert (global_symbols == NULL); | |
22cee43f | 1752 | gdb_assert (global_using_directives == NULL); |
0ab9ce85 DE |
1753 | gdb_assert (pending_macros == NULL); |
1754 | gdb_assert (pending_addrmap == NULL); | |
1755 | gdb_assert (buildsym_compunit == NULL); | |
c906108c SS |
1756 | } |
1757 | ||
1758 | /* Initialize anything that needs initializing when a completely new | |
1759 | symbol file is specified (not just adding some symbols from another | |
1760 | file, e.g. a shared library). */ | |
1761 | ||
1762 | void | |
fba45db2 | 1763 | buildsym_new_init (void) |
c906108c SS |
1764 | { |
1765 | buildsym_init (); | |
1766 | } |