1 /* Support routines for building symbol tables in GDB's internal format.
2 Copyright (C) 1986-2018 Free Software Foundation, Inc.
4 This file is part of GDB.
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
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
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.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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.
23 Routines to support specific debugging information formats (stabs,
24 DWARF, etc) belong somewhere else.
26 The basic way this module is used is as follows:
29 scoped_free_pendings free_pending;
30 cust = start_symtab (...);
31 ... read debug info ...
32 cust = end_symtab (...);
34 The compunit symtab pointer ("cust") is returned from both start_symtab
35 and end_symtab to simplify the debug info readers.
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.
41 Reading DWARF Type Units is another variation:
44 scoped_free_pendings free_pending;
45 cust = start_symtab (...);
46 ... read debug info ...
47 cust = end_expandable_symtab (...);
49 And then reading subsequent Type Units within the containing "Comp Unit"
50 will use a second flow:
53 scoped_free_pendings free_pending;
54 cust = restart_symtab (...);
55 ... read debug info ...
56 cust = augment_type_symtab (...);
58 dbxread.c and xcoffread.c use another variation:
61 scoped_free_pendings free_pending;
62 cust = start_symtab (...);
63 ... read debug info ...
64 cust = end_symtab (...);
65 ... start_symtab + read + end_symtab repeated ...
70 #include "gdb_obstack.h"
75 #include "complaints.h"
76 #include "expression.h" /* For "enum exp_opcode" used by... */
77 #include "filenames.h" /* For DOSish file names. */
79 #include "demangle.h" /* Needed by SYMBOL_INIT_DEMANGLED_NAME. */
81 #include "cp-support.h"
82 #include "dictionary.h"
86 /* Ask buildsym.h to define the vars it normally declares `extern'. */
89 #include "buildsym.h" /* Our own declarations. */
92 /* For cleanup_undefined_stabs_types and finish_global_stabs (somewhat
93 questionable--see comment where we call them). */
95 #include "stabsread.h"
97 /* Buildsym's counterpart to struct compunit_symtab.
98 TODO(dje): Move all related global state into here. */
100 struct buildsym_compunit
102 /* Start recording information about a primary source file (IOW, not an
103 included source file).
104 COMP_DIR is the directory in which the compilation unit was compiled
105 (or NULL if not known). */
107 buildsym_compunit (struct objfile *objfile_, const char *name,
108 const char *comp_dir_, enum language language_,
110 : objfile (objfile_),
111 m_last_source_file (name == nullptr ? nullptr : xstrdup (name)),
112 comp_dir (comp_dir_ == nullptr ? nullptr : xstrdup (comp_dir_)),
113 language (language_),
114 m_last_source_start_addr (last_addr)
118 ~buildsym_compunit ()
120 struct subfile *subfile, *nextsub;
122 if (m_pending_macros != nullptr)
123 free_macro_table (m_pending_macros);
125 for (subfile = subfiles;
129 nextsub = subfile->next;
130 xfree (subfile->name);
131 xfree (subfile->line_vector);
136 void set_last_source_file (const char *name)
138 char *new_name = name == NULL ? NULL : xstrdup (name);
139 m_last_source_file.reset (new_name);
142 struct macro_table *get_macro_table ()
144 if (m_pending_macros == nullptr)
145 m_pending_macros = new_macro_table (&objfile->per_bfd->storage_obstack,
146 objfile->per_bfd->macro_cache,
148 return m_pending_macros;
151 struct macro_table *release_macros ()
153 struct macro_table *result = m_pending_macros;
154 m_pending_macros = nullptr;
158 /* This function is called to discard any pending blocks. */
160 void free_pending_blocks ()
162 m_pending_block_obstack.clear ();
163 m_pending_blocks = nullptr;
166 /* The objfile we're reading debug info from. */
167 struct objfile *objfile;
169 /* List of subfiles (source files).
170 Files are added to the front of the list.
171 This is important mostly for the language determination hacks we use,
172 which iterate over previously added files. */
173 struct subfile *subfiles = nullptr;
175 /* The subfile of the main source file. */
176 struct subfile *main_subfile = nullptr;
178 /* Name of source file whose symbol data we are now processing. This
179 comes from a symbol of type N_SO for stabs. For DWARF it comes
180 from the DW_AT_name attribute of a DW_TAG_compile_unit DIE. */
181 gdb::unique_xmalloc_ptr<char> m_last_source_file;
183 /* E.g., DW_AT_comp_dir if DWARF. Space for this is malloc'd. */
184 gdb::unique_xmalloc_ptr<char> comp_dir;
186 /* Space for this is not malloc'd, and is assumed to have at least
187 the same lifetime as objfile. */
188 const char *producer = nullptr;
190 /* Space for this is not malloc'd, and is assumed to have at least
191 the same lifetime as objfile. */
192 const char *debugformat = nullptr;
194 /* The compunit we are building. */
195 struct compunit_symtab *compunit_symtab = nullptr;
197 /* Language of this compunit_symtab. */
198 enum language language;
200 /* The macro table for the compilation unit whose symbols we're
201 currently reading. */
202 struct macro_table *m_pending_macros = nullptr;
204 /* True if symtab has line number info. This prevents an otherwise
205 empty symtab from being tossed. */
206 bool m_have_line_numbers = false;
208 /* Core address of start of text of current source file. This too
209 comes from the N_SO symbol. For Dwarf it typically comes from the
210 DW_AT_low_pc attribute of a DW_TAG_compile_unit DIE. */
211 CORE_ADDR m_last_source_start_addr;
213 /* Stack of subfile names. */
214 std::vector<const char *> m_subfile_stack;
216 /* The "using" directives local to lexical context. */
217 struct using_direct *m_local_using_directives = nullptr;
219 /* Global "using" directives. */
220 struct using_direct *m_global_using_directives = nullptr;
222 /* The stack of contexts that are pushed by push_context and popped
224 std::vector<struct context_stack> m_context_stack;
226 struct subfile *m_current_subfile = nullptr;
228 /* The mutable address map for the compilation unit whose symbols
229 we're currently reading. The symtabs' shared blockvector will
230 point to a fixed copy of this. */
231 struct addrmap *m_pending_addrmap = nullptr;
233 /* The obstack on which we allocate pending_addrmap.
234 If pending_addrmap is NULL, this is uninitialized; otherwise, it is
235 initialized (and holds pending_addrmap). */
236 auto_obstack m_pending_addrmap_obstack;
238 /* True if we recorded any ranges in the addrmap that are different
239 from those in the blockvector already. We set this to false when
240 we start processing a symfile, and if it's still false at the
241 end, then we just toss the addrmap. */
242 bool m_pending_addrmap_interesting = false;
244 /* An obstack used for allocating pending blocks. */
245 auto_obstack m_pending_block_obstack;
247 /* Pointer to the head of a linked list of symbol blocks which have
248 already been finalized (lexical contexts already closed) and which
249 are just waiting to be built into a blockvector when finalizing the
250 associated symtab. */
251 struct pending_block *m_pending_blocks = nullptr;
254 /* The work-in-progress of the compunit we are building.
255 This is created first, before any subfiles by start_symtab. */
257 static struct buildsym_compunit *buildsym_compunit;
259 /* List of free `struct pending' structures for reuse. */
261 static struct pending *free_pendings;
263 /* List of blocks already made (lexical contexts already closed).
264 This is used at the end to make the blockvector. */
268 struct pending_block *next;
272 static void free_buildsym_compunit (void);
274 static int compare_line_numbers (const void *ln1p, const void *ln2p);
276 static void record_pending_block (struct objfile *objfile,
278 struct pending_block *opblock);
280 /* Initial sizes of data structures. These are realloc'd larger if
281 needed, and realloc'd down to the size actually used, when
284 #define INITIAL_LINE_VECTOR_LENGTH 1000
287 /* Maintain the lists of symbols and blocks. */
289 /* Add a symbol to one of the lists of symbols. */
292 add_symbol_to_list (struct symbol *symbol, struct pending **listhead)
294 struct pending *link;
296 /* If this is an alias for another symbol, don't add it. */
297 if (symbol->ginfo.name && symbol->ginfo.name[0] == '#')
300 /* We keep PENDINGSIZE symbols in each link of the list. If we
301 don't have a link with room in it, add a new link. */
302 if (*listhead == NULL || (*listhead)->nsyms == PENDINGSIZE)
306 link = free_pendings;
307 free_pendings = link->next;
311 link = XNEW (struct pending);
314 link->next = *listhead;
319 (*listhead)->symbol[(*listhead)->nsyms++] = symbol;
322 /* Find a symbol named NAME on a LIST. NAME need not be
323 '\0'-terminated; LENGTH is the length of the name. */
326 find_symbol_in_list (struct pending *list, char *name, int length)
333 for (j = list->nsyms; --j >= 0;)
335 pp = SYMBOL_LINKAGE_NAME (list->symbol[j]);
336 if (*pp == *name && strncmp (pp, name, length) == 0
337 && pp[length] == '\0')
339 return (list->symbol[j]);
347 /* At end of reading syms, or in case of quit, ensure everything
348 associated with building symtabs is freed.
350 N.B. This is *not* intended to be used when building psymtabs. Some debug
351 info readers call this anyway, which is harmless if confusing. */
353 scoped_free_pendings::~scoped_free_pendings ()
355 struct pending *next, *next1;
357 for (next = free_pendings; next; next = next1)
360 xfree ((void *) next);
362 free_pendings = NULL;
364 for (next = file_symbols; next != NULL; next = next1)
367 xfree ((void *) next);
371 for (next = global_symbols; next != NULL; next = next1)
374 xfree ((void *) next);
376 global_symbols = NULL;
378 free_buildsym_compunit ();
381 /* Take one of the lists of symbols and make a block from it. Keep
382 the order the symbols have in the list (reversed from the input
383 file). Put the block on the list of pending blocks. */
385 static struct block *
386 finish_block_internal (struct symbol *symbol,
387 struct pending **listhead,
388 struct pending_block *old_blocks,
389 const struct dynamic_prop *static_link,
390 CORE_ADDR start, CORE_ADDR end,
391 int is_global, int expandable)
393 struct objfile *objfile = buildsym_compunit->objfile;
394 struct gdbarch *gdbarch = get_objfile_arch (objfile);
395 struct pending *next, *next1;
397 struct pending_block *pblock;
398 struct pending_block *opblock;
401 ? allocate_global_block (&objfile->objfile_obstack)
402 : allocate_block (&objfile->objfile_obstack));
407 = dict_create_linear (&objfile->objfile_obstack,
408 buildsym_compunit->language, *listhead);
415 = dict_create_hashed_expandable (buildsym_compunit->language);
416 dict_add_pending (BLOCK_DICT (block), *listhead);
421 dict_create_hashed (&objfile->objfile_obstack,
422 buildsym_compunit->language, *listhead);
426 BLOCK_START (block) = start;
427 BLOCK_END (block) = end;
429 /* Put the block in as the value of the symbol that names it. */
433 struct type *ftype = SYMBOL_TYPE (symbol);
434 struct dict_iterator iter;
435 SYMBOL_BLOCK_VALUE (symbol) = block;
436 BLOCK_FUNCTION (block) = symbol;
438 if (TYPE_NFIELDS (ftype) <= 0)
440 /* No parameter type information is recorded with the
441 function's type. Set that from the type of the
442 parameter symbols. */
443 int nparams = 0, iparams;
446 /* Here we want to directly access the dictionary, because
447 we haven't fully initialized the block yet. */
448 ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym)
450 if (SYMBOL_IS_ARGUMENT (sym))
455 TYPE_NFIELDS (ftype) = nparams;
456 TYPE_FIELDS (ftype) = (struct field *)
457 TYPE_ALLOC (ftype, nparams * sizeof (struct field));
460 /* Here we want to directly access the dictionary, because
461 we haven't fully initialized the block yet. */
462 ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym)
464 if (iparams == nparams)
467 if (SYMBOL_IS_ARGUMENT (sym))
469 TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym);
470 TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0;
479 BLOCK_FUNCTION (block) = NULL;
482 if (static_link != NULL)
483 objfile_register_static_link (objfile, block, static_link);
485 /* Now "free" the links of the list, and empty the list. */
487 for (next = *listhead; next; next = next1)
490 next->next = free_pendings;
491 free_pendings = next;
495 /* Check to be sure that the blocks have an end address that is
496 greater than starting address. */
498 if (BLOCK_END (block) < BLOCK_START (block))
502 complaint (_("block end address less than block "
503 "start address in %s (patched it)"),
504 SYMBOL_PRINT_NAME (symbol));
508 complaint (_("block end address %s less than block "
509 "start address %s (patched it)"),
510 paddress (gdbarch, BLOCK_END (block)),
511 paddress (gdbarch, BLOCK_START (block)));
513 /* Better than nothing. */
514 BLOCK_END (block) = BLOCK_START (block);
517 /* Install this block as the superblock of all blocks made since the
518 start of this scope that don't have superblocks yet. */
521 for (pblock = buildsym_compunit->m_pending_blocks;
522 pblock && pblock != old_blocks;
523 pblock = pblock->next)
525 if (BLOCK_SUPERBLOCK (pblock->block) == NULL)
527 /* Check to be sure the blocks are nested as we receive
528 them. If the compiler/assembler/linker work, this just
529 burns a small amount of time.
531 Skip blocks which correspond to a function; they're not
532 physically nested inside this other blocks, only
534 if (BLOCK_FUNCTION (pblock->block) == NULL
535 && (BLOCK_START (pblock->block) < BLOCK_START (block)
536 || BLOCK_END (pblock->block) > BLOCK_END (block)))
540 complaint (_("inner block not inside outer block in %s"),
541 SYMBOL_PRINT_NAME (symbol));
545 complaint (_("inner block (%s-%s) not "
546 "inside outer block (%s-%s)"),
547 paddress (gdbarch, BLOCK_START (pblock->block)),
548 paddress (gdbarch, BLOCK_END (pblock->block)),
549 paddress (gdbarch, BLOCK_START (block)),
550 paddress (gdbarch, BLOCK_END (block)));
552 if (BLOCK_START (pblock->block) < BLOCK_START (block))
553 BLOCK_START (pblock->block) = BLOCK_START (block);
554 if (BLOCK_END (pblock->block) > BLOCK_END (block))
555 BLOCK_END (pblock->block) = BLOCK_END (block);
557 BLOCK_SUPERBLOCK (pblock->block) = block;
562 block_set_using (block,
564 ? buildsym_compunit->m_global_using_directives
565 : buildsym_compunit->m_local_using_directives),
566 &objfile->objfile_obstack);
568 buildsym_compunit->m_global_using_directives = NULL;
570 buildsym_compunit->m_local_using_directives = NULL;
572 record_pending_block (objfile, block, opblock);
578 finish_block (struct symbol *symbol,
579 struct pending **listhead,
580 struct pending_block *old_blocks,
581 const struct dynamic_prop *static_link,
582 CORE_ADDR start, CORE_ADDR end)
584 return finish_block_internal (symbol, listhead, old_blocks, static_link,
588 /* Record BLOCK on the list of all blocks in the file. Put it after
589 OPBLOCK, or at the beginning if opblock is NULL. This puts the
590 block in the list after all its subblocks.
592 Allocate the pending block struct in the objfile_obstack to save
593 time. This wastes a little space. FIXME: Is it worth it? */
596 record_pending_block (struct objfile *objfile, struct block *block,
597 struct pending_block *opblock)
599 struct pending_block *pblock;
601 pblock = XOBNEW (&buildsym_compunit->m_pending_block_obstack,
602 struct pending_block);
603 pblock->block = block;
606 pblock->next = opblock->next;
607 opblock->next = pblock;
611 pblock->next = buildsym_compunit->m_pending_blocks;
612 buildsym_compunit->m_pending_blocks = pblock;
617 /* Record that the range of addresses from START to END_INCLUSIVE
618 (inclusive, like it says) belongs to BLOCK. BLOCK's start and end
619 addresses must be set already. You must apply this function to all
620 BLOCK's children before applying it to BLOCK.
622 If a call to this function complicates the picture beyond that
623 already provided by BLOCK_START and BLOCK_END, then we create an
624 address map for the block. */
626 record_block_range (struct block *block,
627 CORE_ADDR start, CORE_ADDR end_inclusive)
629 /* If this is any different from the range recorded in the block's
630 own BLOCK_START and BLOCK_END, then note that the address map has
631 become interesting. Note that even if this block doesn't have
632 any "interesting" ranges, some later block might, so we still
633 need to record this block in the addrmap. */
634 if (start != BLOCK_START (block)
635 || end_inclusive + 1 != BLOCK_END (block))
636 buildsym_compunit->m_pending_addrmap_interesting = true;
638 if (buildsym_compunit->m_pending_addrmap == nullptr)
639 buildsym_compunit->m_pending_addrmap
640 = addrmap_create_mutable (&buildsym_compunit->m_pending_addrmap_obstack);
642 addrmap_set_empty (buildsym_compunit->m_pending_addrmap,
643 start, end_inclusive, block);
646 static struct blockvector *
647 make_blockvector (void)
649 struct objfile *objfile = buildsym_compunit->objfile;
650 struct pending_block *next;
651 struct blockvector *blockvector;
654 /* Count the length of the list of blocks. */
656 for (next = buildsym_compunit->m_pending_blocks, i = 0;
658 next = next->next, i++)
662 blockvector = (struct blockvector *)
663 obstack_alloc (&objfile->objfile_obstack,
664 (sizeof (struct blockvector)
665 + (i - 1) * sizeof (struct block *)));
667 /* Copy the blocks into the blockvector. This is done in reverse
668 order, which happens to put the blocks into the proper order
669 (ascending starting address). finish_block has hair to insert
670 each block into the list after its subblocks in order to make
671 sure this is true. */
673 BLOCKVECTOR_NBLOCKS (blockvector) = i;
674 for (next = buildsym_compunit->m_pending_blocks; next; next = next->next)
676 BLOCKVECTOR_BLOCK (blockvector, --i) = next->block;
679 buildsym_compunit->free_pending_blocks ();
681 /* If we needed an address map for this symtab, record it in the
683 if (buildsym_compunit->m_pending_addrmap != nullptr
684 && buildsym_compunit->m_pending_addrmap_interesting)
685 BLOCKVECTOR_MAP (blockvector)
686 = addrmap_create_fixed (buildsym_compunit->m_pending_addrmap,
687 &objfile->objfile_obstack);
689 BLOCKVECTOR_MAP (blockvector) = 0;
691 /* Some compilers output blocks in the wrong order, but we depend on
692 their being in the right order so we can binary search. Check the
693 order and moan about it.
694 Note: Remember that the first two blocks are the global and static
695 blocks. We could special case that fact and begin checking at block 2.
696 To avoid making that assumption we do not. */
697 if (BLOCKVECTOR_NBLOCKS (blockvector) > 1)
699 for (i = 1; i < BLOCKVECTOR_NBLOCKS (blockvector); i++)
701 if (BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i - 1))
702 > BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i)))
705 = BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i));
707 complaint (_("block at %s out of order"),
708 hex_string ((LONGEST) start));
713 return (blockvector);
716 /* Start recording information about source code that came from an
717 included (or otherwise merged-in) source file with a different
718 name. NAME is the name of the file (cannot be NULL). */
721 start_subfile (const char *name)
723 const char *subfile_dirname;
724 struct subfile *subfile;
726 gdb_assert (buildsym_compunit != NULL);
728 subfile_dirname = buildsym_compunit->comp_dir.get ();
730 /* See if this subfile is already registered. */
732 for (subfile = buildsym_compunit->subfiles; subfile; subfile = subfile->next)
736 /* If NAME is an absolute path, and this subfile is not, then
737 attempt to create an absolute path to compare. */
738 if (IS_ABSOLUTE_PATH (name)
739 && !IS_ABSOLUTE_PATH (subfile->name)
740 && subfile_dirname != NULL)
741 subfile_name = concat (subfile_dirname, SLASH_STRING,
742 subfile->name, (char *) NULL);
744 subfile_name = subfile->name;
746 if (FILENAME_CMP (subfile_name, name) == 0)
748 buildsym_compunit->m_current_subfile = subfile;
749 if (subfile_name != subfile->name)
750 xfree (subfile_name);
753 if (subfile_name != subfile->name)
754 xfree (subfile_name);
757 /* This subfile is not known. Add an entry for it. */
759 subfile = XNEW (struct subfile);
760 memset (subfile, 0, sizeof (struct subfile));
761 subfile->buildsym_compunit = buildsym_compunit;
763 subfile->next = buildsym_compunit->subfiles;
764 buildsym_compunit->subfiles = subfile;
766 buildsym_compunit->m_current_subfile = subfile;
768 subfile->name = xstrdup (name);
770 /* Initialize line-number recording for this subfile. */
771 subfile->line_vector = NULL;
773 /* Default the source language to whatever can be deduced from the
774 filename. If nothing can be deduced (such as for a C/C++ include
775 file with a ".h" extension), then inherit whatever language the
776 previous subfile had. This kludgery is necessary because there
777 is no standard way in some object formats to record the source
778 language. Also, when symtabs are allocated we try to deduce a
779 language then as well, but it is too late for us to use that
780 information while reading symbols, since symtabs aren't allocated
781 until after all the symbols have been processed for a given
784 subfile->language = deduce_language_from_filename (subfile->name);
785 if (subfile->language == language_unknown
786 && subfile->next != NULL)
788 subfile->language = subfile->next->language;
791 /* If the filename of this subfile ends in .C, then change the
792 language of any pending subfiles from C to C++. We also accept
793 any other C++ suffixes accepted by deduce_language_from_filename. */
794 /* Likewise for f2c. */
799 enum language sublang = deduce_language_from_filename (subfile->name);
801 if (sublang == language_cplus || sublang == language_fortran)
802 for (s = buildsym_compunit->subfiles; s != NULL; s = s->next)
803 if (s->language == language_c)
804 s->language = sublang;
807 /* And patch up this file if necessary. */
808 if (subfile->language == language_c
809 && subfile->next != NULL
810 && (subfile->next->language == language_cplus
811 || subfile->next->language == language_fortran))
813 subfile->language = subfile->next->language;
817 /* Delete the buildsym compunit. */
820 free_buildsym_compunit (void)
822 if (buildsym_compunit == NULL)
824 delete buildsym_compunit;
825 buildsym_compunit = NULL;
828 /* For stabs readers, the first N_SO symbol is assumed to be the
829 source file name, and the subfile struct is initialized using that
830 assumption. If another N_SO symbol is later seen, immediately
831 following the first one, then the first one is assumed to be the
832 directory name and the second one is really the source file name.
834 So we have to patch up the subfile struct by moving the old name
835 value to dirname and remembering the new name. Some sanity
836 checking is performed to ensure that the state of the subfile
837 struct is reasonable and that the old name we are assuming to be a
838 directory name actually is (by checking for a trailing '/'). */
841 patch_subfile_names (struct subfile *subfile, const char *name)
844 && buildsym_compunit->comp_dir == NULL
845 && subfile->name != NULL
846 && IS_DIR_SEPARATOR (subfile->name[strlen (subfile->name) - 1]))
848 buildsym_compunit->comp_dir.reset (subfile->name);
849 subfile->name = xstrdup (name);
850 set_last_source_file (name);
852 /* Default the source language to whatever can be deduced from
853 the filename. If nothing can be deduced (such as for a C/C++
854 include file with a ".h" extension), then inherit whatever
855 language the previous subfile had. This kludgery is
856 necessary because there is no standard way in some object
857 formats to record the source language. Also, when symtabs
858 are allocated we try to deduce a language then as well, but
859 it is too late for us to use that information while reading
860 symbols, since symtabs aren't allocated until after all the
861 symbols have been processed for a given source file. */
863 subfile->language = deduce_language_from_filename (subfile->name);
864 if (subfile->language == language_unknown
865 && subfile->next != NULL)
867 subfile->language = subfile->next->language;
872 /* Handle the N_BINCL and N_EINCL symbol types that act like N_SOL for
873 switching source files (different subfiles, as we call them) within
874 one object file, but using a stack rather than in an arbitrary
880 gdb_assert (buildsym_compunit != nullptr);
881 gdb_assert (buildsym_compunit->m_current_subfile != NULL);
882 gdb_assert (buildsym_compunit->m_current_subfile->name != NULL);
883 buildsym_compunit->m_subfile_stack.push_back
884 (buildsym_compunit->m_current_subfile->name);
890 gdb_assert (buildsym_compunit != nullptr);
891 gdb_assert (!buildsym_compunit->m_subfile_stack.empty ());
892 const char *name = buildsym_compunit->m_subfile_stack.back ();
893 buildsym_compunit->m_subfile_stack.pop_back ();
897 /* Add a linetable entry for line number LINE and address PC to the
898 line vector for SUBFILE. */
901 record_line (struct subfile *subfile, int line, CORE_ADDR pc)
903 struct linetable_entry *e;
905 /* Ignore the dummy line number in libg.o */
911 /* Make sure line vector exists and is big enough. */
912 if (!subfile->line_vector)
914 subfile->line_vector_length = INITIAL_LINE_VECTOR_LENGTH;
915 subfile->line_vector = (struct linetable *)
916 xmalloc (sizeof (struct linetable)
917 + subfile->line_vector_length * sizeof (struct linetable_entry));
918 subfile->line_vector->nitems = 0;
919 buildsym_compunit->m_have_line_numbers = true;
922 if (subfile->line_vector->nitems + 1 >= subfile->line_vector_length)
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))));
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
945 if (line == 0 && subfile->line_vector->nitems > 0)
947 e = subfile->line_vector->item + subfile->line_vector->nitems - 1;
948 while (subfile->line_vector->nitems > 0 && e->pc == pc)
951 subfile->line_vector->nitems--;
955 e = subfile->line_vector->item + subfile->line_vector->nitems++;
960 /* Needed in order to sort line tables from IBM xcoff files. Sigh! */
963 compare_line_numbers (const void *ln1p, const void *ln2p)
965 struct linetable_entry *ln1 = (struct linetable_entry *) ln1p;
966 struct linetable_entry *ln2 = (struct linetable_entry *) ln2p;
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)
973 if (ln1->pc > ln2->pc)
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;
981 /* See buildsym.h. */
983 struct compunit_symtab *
984 buildsym_compunit_symtab (void)
986 gdb_assert (buildsym_compunit != NULL);
988 return buildsym_compunit->compunit_symtab;
991 /* See buildsym.h. */
994 get_macro_table (void)
996 struct objfile *objfile;
998 gdb_assert (buildsym_compunit != NULL);
999 return buildsym_compunit->get_macro_table ();
1002 /* Init state to prepare for building a symtab.
1003 Note: This can't be done in buildsym_init because dbxread.c and xcoffread.c
1004 can call start_symtab+end_symtab multiple times after one call to
1008 prepare_for_building ()
1010 local_symbols = NULL;
1012 /* These should have been reset either by successful completion of building
1013 a symtab, or by the scoped_free_pendings destructor. */
1014 gdb_assert (file_symbols == NULL);
1015 gdb_assert (global_symbols == NULL);
1016 gdb_assert (buildsym_compunit == nullptr);
1019 /* Start a new symtab for a new source file in OBJFILE. Called, for example,
1020 when a stabs symbol of type N_SO is seen, or when a DWARF
1021 TAG_compile_unit DIE is seen. It indicates the start of data for
1022 one original source file.
1024 NAME is the name of the file (cannot be NULL). COMP_DIR is the
1025 directory in which the file was compiled (or NULL if not known).
1026 START_ADDR is the lowest address of objects in the file (or 0 if
1027 not known). LANGUAGE is the language of the source file, or
1028 language_unknown if not known, in which case it'll be deduced from
1031 struct compunit_symtab *
1032 start_symtab (struct objfile *objfile, const char *name, const char *comp_dir,
1033 CORE_ADDR start_addr, enum language language)
1035 prepare_for_building ();
1037 buildsym_compunit = new struct buildsym_compunit (objfile, name, comp_dir,
1038 language, start_addr);
1040 /* Allocate the compunit symtab now. The caller needs it to allocate
1041 non-primary symtabs. It is also needed by get_macro_table. */
1042 buildsym_compunit->compunit_symtab = allocate_compunit_symtab (objfile,
1045 /* Build the subfile for NAME (the main source file) so that we can record
1046 a pointer to it for later.
1047 IMPORTANT: Do not allocate a struct symtab for NAME here.
1048 It can happen that the debug info provides a different path to NAME than
1049 DIRNAME,NAME. We cope with this in watch_main_source_file_lossage but
1050 that only works if the main_subfile doesn't have a symtab yet. */
1051 start_subfile (name);
1052 /* Save this so that we don't have to go looking for it at the end
1053 of the subfiles list. */
1054 buildsym_compunit->main_subfile = buildsym_compunit->m_current_subfile;
1056 return buildsym_compunit->compunit_symtab;
1059 /* Restart compilation for a symtab.
1060 CUST is the result of end_expandable_symtab.
1061 NAME, START_ADDR are the source file we are resuming with.
1063 This is used when a symtab is built from multiple sources.
1064 The symtab is first built with start_symtab/end_expandable_symtab
1065 and then for each additional piece call restart_symtab/augment_*_symtab.
1066 Note: At the moment there is only augment_type_symtab. */
1069 restart_symtab (struct compunit_symtab *cust,
1070 const char *name, CORE_ADDR start_addr)
1072 prepare_for_building ();
1075 = new struct buildsym_compunit (COMPUNIT_OBJFILE (cust),
1077 COMPUNIT_DIRNAME (cust),
1078 compunit_language (cust),
1080 buildsym_compunit->compunit_symtab = cust;
1083 /* Subroutine of end_symtab to simplify it. Look for a subfile that
1084 matches the main source file's basename. If there is only one, and
1085 if the main source file doesn't have any symbol or line number
1086 information, then copy this file's symtab and line_vector to the
1087 main source file's subfile and discard the other subfile. This can
1088 happen because of a compiler bug or from the user playing games
1089 with #line or from things like a distributed build system that
1090 manipulates the debug info. This can also happen from an innocent
1091 symlink in the paths, we don't canonicalize paths here. */
1094 watch_main_source_file_lossage (void)
1096 struct subfile *mainsub, *subfile;
1098 /* We have to watch for buildsym_compunit == NULL here. It's a quirk of
1099 end_symtab, it can return NULL so there may not be a main subfile. */
1100 if (buildsym_compunit == NULL)
1103 /* Get the main source file. */
1104 mainsub = buildsym_compunit->main_subfile;
1106 /* If the main source file doesn't have any line number or symbol
1107 info, look for an alias in another subfile. */
1109 if (mainsub->line_vector == NULL
1110 && mainsub->symtab == NULL)
1112 const char *mainbase = lbasename (mainsub->name);
1114 struct subfile *prevsub;
1115 struct subfile *mainsub_alias = NULL;
1116 struct subfile *prev_mainsub_alias = NULL;
1119 for (subfile = buildsym_compunit->subfiles;
1121 subfile = subfile->next)
1123 if (subfile == mainsub)
1125 if (filename_cmp (lbasename (subfile->name), mainbase) == 0)
1128 mainsub_alias = subfile;
1129 prev_mainsub_alias = prevsub;
1134 if (nr_matches == 1)
1136 gdb_assert (mainsub_alias != NULL && mainsub_alias != mainsub);
1138 /* Found a match for the main source file.
1139 Copy its line_vector and symtab to the main subfile
1140 and then discard it. */
1142 mainsub->line_vector = mainsub_alias->line_vector;
1143 mainsub->line_vector_length = mainsub_alias->line_vector_length;
1144 mainsub->symtab = mainsub_alias->symtab;
1146 if (prev_mainsub_alias == NULL)
1147 buildsym_compunit->subfiles = mainsub_alias->next;
1149 prev_mainsub_alias->next = mainsub_alias->next;
1150 xfree (mainsub_alias->name);
1151 xfree (mainsub_alias);
1156 /* Reset state after a successful building of a symtab.
1157 This exists because dbxread.c and xcoffread.c can call
1158 start_symtab+end_symtab multiple times after one call to buildsym_init,
1159 and before the scoped_free_pendings destructor is called.
1160 We keep the free_pendings list around for dbx/xcoff sake. */
1163 reset_symtab_globals (void)
1165 local_symbols = NULL;
1166 file_symbols = NULL;
1167 global_symbols = NULL;
1169 free_buildsym_compunit ();
1172 /* Implementation of the first part of end_symtab. It allows modifying
1173 STATIC_BLOCK before it gets finalized by end_symtab_from_static_block.
1174 If the returned value is NULL there is no blockvector created for
1175 this symtab (you still must call end_symtab_from_static_block).
1177 END_ADDR is the same as for end_symtab: the address of the end of the
1180 If EXPANDABLE is non-zero the STATIC_BLOCK dictionary is made
1183 If REQUIRED is non-zero, then a symtab is created even if it does
1184 not contain any symbols. */
1187 end_symtab_get_static_block (CORE_ADDR end_addr, int expandable, int required)
1189 struct objfile *objfile = buildsym_compunit->objfile;
1191 /* Finish the lexical context of the last function in the file; pop
1192 the context stack. */
1194 if (!buildsym_compunit->m_context_stack.empty ())
1196 struct context_stack cstk = pop_context ();
1198 /* Make a block for the local symbols within. */
1199 finish_block (cstk.name, &local_symbols, cstk.old_blocks, NULL,
1200 cstk.start_addr, end_addr);
1202 if (!buildsym_compunit->m_context_stack.empty ())
1204 /* This is said to happen with SCO. The old coffread.c
1205 code simply emptied the context stack, so we do the
1206 same. FIXME: Find out why it is happening. This is not
1207 believed to happen in most cases (even for coffread.c);
1208 it used to be an abort(). */
1209 complaint (_("Context stack not empty in end_symtab"));
1210 buildsym_compunit->m_context_stack.clear ();
1214 /* Reordered executables may have out of order pending blocks; if
1215 OBJF_REORDERED is true, then sort the pending blocks. */
1217 if ((objfile->flags & OBJF_REORDERED) && buildsym_compunit->m_pending_blocks)
1219 struct pending_block *pb;
1221 std::vector<block *> barray;
1223 for (pb = buildsym_compunit->m_pending_blocks; pb != NULL; pb = pb->next)
1224 barray.push_back (pb->block);
1226 /* Sort blocks by start address in descending order. Blocks with the
1227 same start address must remain in the original order to preserve
1228 inline function caller/callee relationships. */
1229 std::stable_sort (barray.begin (), barray.end (),
1230 [] (const block *a, const block *b)
1232 return BLOCK_START (a) > BLOCK_START (b);
1236 for (pb = buildsym_compunit->m_pending_blocks; pb != NULL; pb = pb->next)
1237 pb->block = barray[i++];
1240 /* Cleanup any undefined types that have been left hanging around
1241 (this needs to be done before the finish_blocks so that
1242 file_symbols is still good).
1244 Both cleanup_undefined_stabs_types and finish_global_stabs are stabs
1245 specific, but harmless for other symbol readers, since on gdb
1246 startup or when finished reading stabs, the state is set so these
1247 are no-ops. FIXME: Is this handled right in case of QUIT? Can
1248 we make this cleaner? */
1250 cleanup_undefined_stabs_types (objfile);
1251 finish_global_stabs (objfile);
1254 && buildsym_compunit->m_pending_blocks == NULL
1255 && file_symbols == NULL
1256 && global_symbols == NULL
1257 && !buildsym_compunit->m_have_line_numbers
1258 && buildsym_compunit->m_pending_macros == NULL
1259 && buildsym_compunit->m_global_using_directives == NULL)
1261 /* Ignore symtabs that have no functions with real debugging info. */
1266 /* Define the STATIC_BLOCK. */
1267 return finish_block_internal (NULL, &file_symbols, NULL, NULL,
1268 buildsym_compunit->m_last_source_start_addr,
1269 end_addr, 0, expandable);
1273 /* Subroutine of end_symtab_from_static_block to simplify it.
1274 Handle the "have blockvector" case.
1275 See end_symtab_from_static_block for a description of the arguments. */
1277 static struct compunit_symtab *
1278 end_symtab_with_blockvector (struct block *static_block,
1279 int section, int expandable)
1281 struct objfile *objfile = buildsym_compunit->objfile;
1282 struct compunit_symtab *cu = buildsym_compunit->compunit_symtab;
1283 struct symtab *symtab;
1284 struct blockvector *blockvector;
1285 struct subfile *subfile;
1288 gdb_assert (static_block != NULL);
1289 gdb_assert (buildsym_compunit != NULL);
1290 gdb_assert (buildsym_compunit->subfiles != NULL);
1292 end_addr = BLOCK_END (static_block);
1294 /* Create the GLOBAL_BLOCK and build the blockvector. */
1295 finish_block_internal (NULL, &global_symbols, NULL, NULL,
1296 buildsym_compunit->m_last_source_start_addr, end_addr,
1298 blockvector = make_blockvector ();
1300 /* Read the line table if it has to be read separately.
1301 This is only used by xcoffread.c. */
1302 if (objfile->sf->sym_read_linetable != NULL)
1303 objfile->sf->sym_read_linetable (objfile);
1305 /* Handle the case where the debug info specifies a different path
1306 for the main source file. It can cause us to lose track of its
1307 line number information. */
1308 watch_main_source_file_lossage ();
1310 /* Now create the symtab objects proper, if not already done,
1311 one for each subfile. */
1313 for (subfile = buildsym_compunit->subfiles;
1315 subfile = subfile->next)
1317 int linetablesize = 0;
1319 if (subfile->line_vector)
1321 linetablesize = sizeof (struct linetable) +
1322 subfile->line_vector->nitems * sizeof (struct linetable_entry);
1324 /* Like the pending blocks, the line table may be
1325 scrambled in reordered executables. Sort it if
1326 OBJF_REORDERED is true. */
1327 if (objfile->flags & OBJF_REORDERED)
1328 qsort (subfile->line_vector->item,
1329 subfile->line_vector->nitems,
1330 sizeof (struct linetable_entry), compare_line_numbers);
1333 /* Allocate a symbol table if necessary. */
1334 if (subfile->symtab == NULL)
1335 subfile->symtab = allocate_symtab (cu, subfile->name);
1336 symtab = subfile->symtab;
1338 /* Fill in its components. */
1340 if (subfile->line_vector)
1342 /* Reallocate the line table on the symbol obstack. */
1343 SYMTAB_LINETABLE (symtab) = (struct linetable *)
1344 obstack_alloc (&objfile->objfile_obstack, linetablesize);
1345 memcpy (SYMTAB_LINETABLE (symtab), subfile->line_vector,
1350 SYMTAB_LINETABLE (symtab) = NULL;
1353 /* Use whatever language we have been using for this
1354 subfile, not the one that was deduced in allocate_symtab
1355 from the filename. We already did our own deducing when
1356 we created the subfile, and we may have altered our
1357 opinion of what language it is from things we found in
1359 symtab->language = subfile->language;
1362 /* Make sure the symtab of main_subfile is the first in its list. */
1364 struct symtab *main_symtab, *prev_symtab;
1366 main_symtab = buildsym_compunit->main_subfile->symtab;
1368 ALL_COMPUNIT_FILETABS (cu, symtab)
1370 if (symtab == main_symtab)
1372 if (prev_symtab != NULL)
1374 prev_symtab->next = main_symtab->next;
1375 main_symtab->next = COMPUNIT_FILETABS (cu);
1376 COMPUNIT_FILETABS (cu) = main_symtab;
1380 prev_symtab = symtab;
1382 gdb_assert (main_symtab == COMPUNIT_FILETABS (cu));
1385 /* Fill out the compunit symtab. */
1387 if (buildsym_compunit->comp_dir != NULL)
1389 /* Reallocate the dirname on the symbol obstack. */
1390 const char *comp_dir = buildsym_compunit->comp_dir.get ();
1391 COMPUNIT_DIRNAME (cu)
1392 = (const char *) obstack_copy0 (&objfile->objfile_obstack,
1393 comp_dir, strlen (comp_dir));
1396 /* Save the debug format string (if any) in the symtab. */
1397 COMPUNIT_DEBUGFORMAT (cu) = buildsym_compunit->debugformat;
1399 /* Similarly for the producer. */
1400 COMPUNIT_PRODUCER (cu) = buildsym_compunit->producer;
1402 COMPUNIT_BLOCKVECTOR (cu) = blockvector;
1404 struct block *b = BLOCKVECTOR_BLOCK (blockvector, GLOBAL_BLOCK);
1406 set_block_compunit_symtab (b, cu);
1409 COMPUNIT_BLOCK_LINE_SECTION (cu) = section;
1411 COMPUNIT_MACRO_TABLE (cu) = buildsym_compunit->release_macros ();
1413 /* Default any symbols without a specified symtab to the primary symtab. */
1417 /* The main source file's symtab. */
1418 symtab = COMPUNIT_FILETABS (cu);
1420 for (block_i = 0; block_i < BLOCKVECTOR_NBLOCKS (blockvector); block_i++)
1422 struct block *block = BLOCKVECTOR_BLOCK (blockvector, block_i);
1424 struct dict_iterator iter;
1426 /* Inlined functions may have symbols not in the global or
1427 static symbol lists. */
1428 if (BLOCK_FUNCTION (block) != NULL)
1429 if (symbol_symtab (BLOCK_FUNCTION (block)) == NULL)
1430 symbol_set_symtab (BLOCK_FUNCTION (block), symtab);
1432 /* Note that we only want to fix up symbols from the local
1433 blocks, not blocks coming from included symtabs. That is why
1434 we use ALL_DICT_SYMBOLS here and not ALL_BLOCK_SYMBOLS. */
1435 ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym)
1436 if (symbol_symtab (sym) == NULL)
1437 symbol_set_symtab (sym, symtab);
1441 add_compunit_symtab_to_objfile (cu);
1446 /* Implementation of the second part of end_symtab. Pass STATIC_BLOCK
1447 as value returned by end_symtab_get_static_block.
1449 SECTION is the same as for end_symtab: the section number
1450 (in objfile->section_offsets) of the blockvector and linetable.
1452 If EXPANDABLE is non-zero the GLOBAL_BLOCK dictionary is made
1455 struct compunit_symtab *
1456 end_symtab_from_static_block (struct block *static_block,
1457 int section, int expandable)
1459 struct compunit_symtab *cu;
1461 if (static_block == NULL)
1463 /* Handle the "no blockvector" case.
1464 When this happens there is nothing to record, so there's nothing
1465 to do: memory will be freed up later.
1467 Note: We won't be adding a compunit to the objfile's list of
1468 compunits, so there's nothing to unchain. However, since each symtab
1469 is added to the objfile's obstack we can't free that space.
1470 We could do better, but this is believed to be a sufficiently rare
1475 cu = end_symtab_with_blockvector (static_block, section, expandable);
1477 reset_symtab_globals ();
1482 /* Finish the symbol definitions for one main source file, close off
1483 all the lexical contexts for that file (creating struct block's for
1484 them), then make the struct symtab for that file and put it in the
1487 END_ADDR is the address of the end of the file's text. SECTION is
1488 the section number (in objfile->section_offsets) of the blockvector
1491 Note that it is possible for end_symtab() to return NULL. In
1492 particular, for the DWARF case at least, it will return NULL when
1493 it finds a compilation unit that has exactly one DIE, a
1494 TAG_compile_unit DIE. This can happen when we link in an object
1495 file that was compiled from an empty source file. Returning NULL
1496 is probably not the correct thing to do, because then gdb will
1497 never know about this empty file (FIXME).
1499 If you need to modify STATIC_BLOCK before it is finalized you should
1500 call end_symtab_get_static_block and end_symtab_from_static_block
1503 struct compunit_symtab *
1504 end_symtab (CORE_ADDR end_addr, int section)
1506 struct block *static_block;
1508 static_block = end_symtab_get_static_block (end_addr, 0, 0);
1509 return end_symtab_from_static_block (static_block, section, 0);
1512 /* Same as end_symtab except create a symtab that can be later added to. */
1514 struct compunit_symtab *
1515 end_expandable_symtab (CORE_ADDR end_addr, int section)
1517 struct block *static_block;
1519 static_block = end_symtab_get_static_block (end_addr, 1, 0);
1520 return end_symtab_from_static_block (static_block, section, 1);
1523 /* Subroutine of augment_type_symtab to simplify it.
1524 Attach the main source file's symtab to all symbols in PENDING_LIST that
1528 set_missing_symtab (struct pending *pending_list,
1529 struct compunit_symtab *cu)
1531 struct pending *pending;
1534 for (pending = pending_list; pending != NULL; pending = pending->next)
1536 for (i = 0; i < pending->nsyms; ++i)
1538 if (symbol_symtab (pending->symbol[i]) == NULL)
1539 symbol_set_symtab (pending->symbol[i], COMPUNIT_FILETABS (cu));
1544 /* Same as end_symtab, but for the case where we're adding more symbols
1545 to an existing symtab that is known to contain only type information.
1546 This is the case for DWARF4 Type Units. */
1549 augment_type_symtab (void)
1551 struct compunit_symtab *cust = buildsym_compunit->compunit_symtab;
1552 const struct blockvector *blockvector = COMPUNIT_BLOCKVECTOR (cust);
1554 if (!buildsym_compunit->m_context_stack.empty ())
1555 complaint (_("Context stack not empty in augment_type_symtab"));
1556 if (buildsym_compunit->m_pending_blocks != NULL)
1557 complaint (_("Blocks in a type symtab"));
1558 if (buildsym_compunit->m_pending_macros != NULL)
1559 complaint (_("Macro in a type symtab"));
1560 if (buildsym_compunit->m_have_line_numbers)
1561 complaint (_("Line numbers recorded in a type symtab"));
1563 if (file_symbols != NULL)
1565 struct block *block = BLOCKVECTOR_BLOCK (blockvector, STATIC_BLOCK);
1567 /* First mark any symbols without a specified symtab as belonging
1568 to the primary symtab. */
1569 set_missing_symtab (file_symbols, cust);
1571 dict_add_pending (BLOCK_DICT (block), file_symbols);
1574 if (global_symbols != NULL)
1576 struct block *block = BLOCKVECTOR_BLOCK (blockvector, GLOBAL_BLOCK);
1578 /* First mark any symbols without a specified symtab as belonging
1579 to the primary symtab. */
1580 set_missing_symtab (global_symbols, cust);
1582 dict_add_pending (BLOCK_DICT (block), global_symbols);
1585 reset_symtab_globals ();
1588 /* Push a context block. Args are an identifying nesting level
1589 (checkable when you pop it), and the starting PC address of this
1592 struct context_stack *
1593 push_context (int desc, CORE_ADDR valu)
1595 gdb_assert (buildsym_compunit != nullptr);
1597 buildsym_compunit->m_context_stack.emplace_back ();
1598 struct context_stack *newobj = &buildsym_compunit->m_context_stack.back ();
1600 newobj->depth = desc;
1601 newobj->locals = local_symbols;
1602 newobj->old_blocks = buildsym_compunit->m_pending_blocks;
1603 newobj->start_addr = valu;
1604 newobj->local_using_directives
1605 = buildsym_compunit->m_local_using_directives;
1606 newobj->name = NULL;
1608 local_symbols = NULL;
1609 buildsym_compunit->m_local_using_directives = NULL;
1614 /* Pop a context block. Returns the address of the context block just
1617 struct context_stack
1620 gdb_assert (buildsym_compunit != nullptr);
1621 gdb_assert (!buildsym_compunit->m_context_stack.empty ());
1622 struct context_stack result = buildsym_compunit->m_context_stack.back ();
1623 buildsym_compunit->m_context_stack.pop_back ();
1630 record_debugformat (const char *format)
1632 buildsym_compunit->debugformat = format;
1636 record_producer (const char *producer)
1638 buildsym_compunit->producer = producer;
1643 /* See buildsym.h. */
1646 set_last_source_file (const char *name)
1648 gdb_assert (buildsym_compunit != nullptr || name == nullptr);
1649 if (buildsym_compunit != nullptr)
1650 buildsym_compunit->set_last_source_file (name);
1653 /* See buildsym.h. */
1656 get_last_source_file (void)
1658 if (buildsym_compunit == nullptr)
1660 return buildsym_compunit->m_last_source_file.get ();
1663 /* See buildsym.h. */
1666 set_last_source_start_addr (CORE_ADDR addr)
1668 gdb_assert (buildsym_compunit != nullptr);
1669 buildsym_compunit->m_last_source_start_addr = addr;
1672 /* See buildsym.h. */
1675 get_last_source_start_addr ()
1677 gdb_assert (buildsym_compunit != nullptr);
1678 return buildsym_compunit->m_last_source_start_addr;
1681 /* See buildsym.h. */
1683 struct using_direct **
1684 get_local_using_directives ()
1686 gdb_assert (buildsym_compunit != nullptr);
1687 return &buildsym_compunit->m_local_using_directives;
1690 /* See buildsym.h. */
1693 set_local_using_directives (struct using_direct *new_local)
1695 gdb_assert (buildsym_compunit != nullptr);
1696 buildsym_compunit->m_local_using_directives = new_local;
1699 /* See buildsym.h. */
1701 struct using_direct **
1702 get_global_using_directives ()
1704 gdb_assert (buildsym_compunit != nullptr);
1705 return &buildsym_compunit->m_global_using_directives;
1708 /* See buildsym.h. */
1711 outermost_context_p ()
1713 gdb_assert (buildsym_compunit != nullptr);
1714 return buildsym_compunit->m_context_stack.empty ();
1717 /* See buildsym.h. */
1719 struct context_stack *
1720 get_current_context_stack ()
1722 gdb_assert (buildsym_compunit != nullptr);
1723 if (buildsym_compunit->m_context_stack.empty ())
1725 return &buildsym_compunit->m_context_stack.back ();
1728 /* See buildsym.h. */
1731 get_context_stack_depth ()
1733 gdb_assert (buildsym_compunit != nullptr);
1734 return buildsym_compunit->m_context_stack.size ();
1737 /* See buildsym.h. */
1740 get_current_subfile ()
1742 gdb_assert (buildsym_compunit != nullptr);
1743 return buildsym_compunit->m_current_subfile;
1748 /* Initialize anything that needs initializing when starting to read a
1749 fresh piece of a symbol file, e.g. reading in the stuff
1750 corresponding to a psymtab. */
1755 /* Ensure the scoped_free_pendings destructor was called after
1757 gdb_assert (free_pendings == NULL);
1758 gdb_assert (file_symbols == NULL);
1759 gdb_assert (global_symbols == NULL);
1760 gdb_assert (buildsym_compunit == NULL);