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 /* The objfile we're reading debug info from. */
159 struct objfile
*objfile
;
161 /* List of subfiles (source files).
162 Files are added to the front of the list.
163 This is important mostly for the language determination hacks we use,
164 which iterate over previously added files. */
165 struct subfile
*subfiles
= nullptr;
167 /* The subfile of the main source file. */
168 struct subfile
*main_subfile
= nullptr;
170 /* Name of source file whose symbol data we are now processing. This
171 comes from a symbol of type N_SO for stabs. For DWARF it comes
172 from the DW_AT_name attribute of a DW_TAG_compile_unit DIE. */
173 gdb::unique_xmalloc_ptr
<char> m_last_source_file
;
175 /* E.g., DW_AT_comp_dir if DWARF. Space for this is malloc'd. */
176 gdb::unique_xmalloc_ptr
<char> comp_dir
;
178 /* Space for this is not malloc'd, and is assumed to have at least
179 the same lifetime as objfile. */
180 const char *producer
= nullptr;
182 /* Space for this is not malloc'd, and is assumed to have at least
183 the same lifetime as objfile. */
184 const char *debugformat
= nullptr;
186 /* The compunit we are building. */
187 struct compunit_symtab
*compunit_symtab
= nullptr;
189 /* Language of this compunit_symtab. */
190 enum language language
;
192 /* The macro table for the compilation unit whose symbols we're
193 currently reading. */
194 struct macro_table
*m_pending_macros
= nullptr;
196 /* True if symtab has line number info. This prevents an otherwise
197 empty symtab from being tossed. */
198 bool m_have_line_numbers
= false;
200 /* Core address of start of text of current source file. This too
201 comes from the N_SO symbol. For Dwarf it typically comes from the
202 DW_AT_low_pc attribute of a DW_TAG_compile_unit DIE. */
203 CORE_ADDR m_last_source_start_addr
;
205 /* Stack of subfile names. */
206 std::vector
<const char *> m_subfile_stack
;
208 /* The "using" directives local to lexical context. */
209 struct using_direct
*m_local_using_directives
= nullptr;
211 /* Global "using" directives. */
212 struct using_direct
*m_global_using_directives
= nullptr;
214 /* The stack of contexts that are pushed by push_context and popped
216 std::vector
<struct context_stack
> m_context_stack
;
219 /* The work-in-progress of the compunit we are building.
220 This is created first, before any subfiles by start_symtab. */
222 static struct buildsym_compunit
*buildsym_compunit
;
224 /* List of free `struct pending' structures for reuse. */
226 static struct pending
*free_pendings
;
228 /* The mutable address map for the compilation unit whose symbols
229 we're currently reading. The symtabs' shared blockvector will
230 point to a fixed copy of this. */
231 static struct addrmap
*pending_addrmap
;
233 /* The obstack on which we allocate pending_addrmap.
234 If pending_addrmap is NULL, this is uninitialized; otherwise, it is
235 initialized (and holds pending_addrmap). */
236 static struct obstack pending_addrmap_obstack
;
238 /* Non-zero if we recorded any ranges in the addrmap that are
239 different from those in the blockvector already. We set this to
240 zero when we start processing a symfile, and if it's still zero at
241 the end, then we just toss the addrmap. */
242 static int pending_addrmap_interesting
;
244 /* An obstack used for allocating pending blocks. */
246 static struct obstack pending_block_obstack
;
248 /* List of blocks already made (lexical contexts already closed).
249 This is used at the end to make the blockvector. */
253 struct pending_block
*next
;
257 /* Pointer to the head of a linked list of symbol blocks which have
258 already been finalized (lexical contexts already closed) and which
259 are just waiting to be built into a blockvector when finalizing the
260 associated symtab. */
262 static struct pending_block
*pending_blocks
;
264 static void free_buildsym_compunit (void);
266 static int compare_line_numbers (const void *ln1p
, const void *ln2p
);
268 static void record_pending_block (struct objfile
*objfile
,
270 struct pending_block
*opblock
);
272 static void free_pending_blocks ();
274 /* Initial sizes of data structures. These are realloc'd larger if
275 needed, and realloc'd down to the size actually used, when
278 #define INITIAL_LINE_VECTOR_LENGTH 1000
281 /* Maintain the lists of symbols and blocks. */
283 /* Add a symbol to one of the lists of symbols. */
286 add_symbol_to_list (struct symbol
*symbol
, struct pending
**listhead
)
288 struct pending
*link
;
290 /* If this is an alias for another symbol, don't add it. */
291 if (symbol
->ginfo
.name
&& symbol
->ginfo
.name
[0] == '#')
294 /* We keep PENDINGSIZE symbols in each link of the list. If we
295 don't have a link with room in it, add a new link. */
296 if (*listhead
== NULL
|| (*listhead
)->nsyms
== PENDINGSIZE
)
300 link
= free_pendings
;
301 free_pendings
= link
->next
;
305 link
= XNEW (struct pending
);
308 link
->next
= *listhead
;
313 (*listhead
)->symbol
[(*listhead
)->nsyms
++] = symbol
;
316 /* Find a symbol named NAME on a LIST. NAME need not be
317 '\0'-terminated; LENGTH is the length of the name. */
320 find_symbol_in_list (struct pending
*list
, char *name
, int length
)
327 for (j
= list
->nsyms
; --j
>= 0;)
329 pp
= SYMBOL_LINKAGE_NAME (list
->symbol
[j
]);
330 if (*pp
== *name
&& strncmp (pp
, name
, length
) == 0
331 && pp
[length
] == '\0')
333 return (list
->symbol
[j
]);
341 scoped_free_pendings::scoped_free_pendings ()
343 gdb_assert (pending_blocks
== nullptr);
346 /* At end of reading syms, or in case of quit, ensure everything
347 associated with building symtabs is freed.
349 N.B. This is *not* intended to be used when building psymtabs. Some debug
350 info readers call this anyway, which is harmless if confusing. */
352 scoped_free_pendings::~scoped_free_pendings ()
354 struct pending
*next
, *next1
;
356 for (next
= free_pendings
; next
; next
= next1
)
359 xfree ((void *) next
);
361 free_pendings
= NULL
;
363 free_pending_blocks ();
365 for (next
= file_symbols
; next
!= NULL
; next
= next1
)
368 xfree ((void *) next
);
372 for (next
= global_symbols
; next
!= NULL
; next
= next1
)
375 xfree ((void *) next
);
377 global_symbols
= NULL
;
380 obstack_free (&pending_addrmap_obstack
, NULL
);
381 pending_addrmap
= NULL
;
383 free_buildsym_compunit ();
386 /* This function is called to discard any pending blocks. */
389 free_pending_blocks ()
391 if (pending_blocks
!= NULL
)
393 obstack_free (&pending_block_obstack
, NULL
);
394 pending_blocks
= NULL
;
398 /* Take one of the lists of symbols and make a block from it. Keep
399 the order the symbols have in the list (reversed from the input
400 file). Put the block on the list of pending blocks. */
402 static struct block
*
403 finish_block_internal (struct symbol
*symbol
,
404 struct pending
**listhead
,
405 struct pending_block
*old_blocks
,
406 const struct dynamic_prop
*static_link
,
407 CORE_ADDR start
, CORE_ADDR end
,
408 int is_global
, int expandable
)
410 struct objfile
*objfile
= buildsym_compunit
->objfile
;
411 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
412 struct pending
*next
, *next1
;
414 struct pending_block
*pblock
;
415 struct pending_block
*opblock
;
418 ? allocate_global_block (&objfile
->objfile_obstack
)
419 : allocate_block (&objfile
->objfile_obstack
));
424 = dict_create_linear (&objfile
->objfile_obstack
,
425 buildsym_compunit
->language
, *listhead
);
432 = dict_create_hashed_expandable (buildsym_compunit
->language
);
433 dict_add_pending (BLOCK_DICT (block
), *listhead
);
438 dict_create_hashed (&objfile
->objfile_obstack
,
439 buildsym_compunit
->language
, *listhead
);
443 BLOCK_START (block
) = start
;
444 BLOCK_END (block
) = end
;
446 /* Put the block in as the value of the symbol that names it. */
450 struct type
*ftype
= SYMBOL_TYPE (symbol
);
451 struct dict_iterator iter
;
452 SYMBOL_BLOCK_VALUE (symbol
) = block
;
453 BLOCK_FUNCTION (block
) = symbol
;
455 if (TYPE_NFIELDS (ftype
) <= 0)
457 /* No parameter type information is recorded with the
458 function's type. Set that from the type of the
459 parameter symbols. */
460 int nparams
= 0, iparams
;
463 /* Here we want to directly access the dictionary, because
464 we haven't fully initialized the block yet. */
465 ALL_DICT_SYMBOLS (BLOCK_DICT (block
), iter
, sym
)
467 if (SYMBOL_IS_ARGUMENT (sym
))
472 TYPE_NFIELDS (ftype
) = nparams
;
473 TYPE_FIELDS (ftype
) = (struct field
*)
474 TYPE_ALLOC (ftype
, nparams
* sizeof (struct field
));
477 /* Here we want to directly access the dictionary, because
478 we haven't fully initialized the block yet. */
479 ALL_DICT_SYMBOLS (BLOCK_DICT (block
), iter
, sym
)
481 if (iparams
== nparams
)
484 if (SYMBOL_IS_ARGUMENT (sym
))
486 TYPE_FIELD_TYPE (ftype
, iparams
) = SYMBOL_TYPE (sym
);
487 TYPE_FIELD_ARTIFICIAL (ftype
, iparams
) = 0;
496 BLOCK_FUNCTION (block
) = NULL
;
499 if (static_link
!= NULL
)
500 objfile_register_static_link (objfile
, block
, static_link
);
502 /* Now "free" the links of the list, and empty the list. */
504 for (next
= *listhead
; next
; next
= next1
)
507 next
->next
= free_pendings
;
508 free_pendings
= next
;
512 /* Check to be sure that the blocks have an end address that is
513 greater than starting address. */
515 if (BLOCK_END (block
) < BLOCK_START (block
))
519 complaint (_("block end address less than block "
520 "start address in %s (patched it)"),
521 SYMBOL_PRINT_NAME (symbol
));
525 complaint (_("block end address %s less than block "
526 "start address %s (patched it)"),
527 paddress (gdbarch
, BLOCK_END (block
)),
528 paddress (gdbarch
, BLOCK_START (block
)));
530 /* Better than nothing. */
531 BLOCK_END (block
) = BLOCK_START (block
);
534 /* Install this block as the superblock of all blocks made since the
535 start of this scope that don't have superblocks yet. */
538 for (pblock
= pending_blocks
;
539 pblock
&& pblock
!= old_blocks
;
540 pblock
= pblock
->next
)
542 if (BLOCK_SUPERBLOCK (pblock
->block
) == NULL
)
544 /* Check to be sure the blocks are nested as we receive
545 them. If the compiler/assembler/linker work, this just
546 burns a small amount of time.
548 Skip blocks which correspond to a function; they're not
549 physically nested inside this other blocks, only
551 if (BLOCK_FUNCTION (pblock
->block
) == NULL
552 && (BLOCK_START (pblock
->block
) < BLOCK_START (block
)
553 || BLOCK_END (pblock
->block
) > BLOCK_END (block
)))
557 complaint (_("inner block not inside outer block in %s"),
558 SYMBOL_PRINT_NAME (symbol
));
562 complaint (_("inner block (%s-%s) not "
563 "inside outer block (%s-%s)"),
564 paddress (gdbarch
, BLOCK_START (pblock
->block
)),
565 paddress (gdbarch
, BLOCK_END (pblock
->block
)),
566 paddress (gdbarch
, BLOCK_START (block
)),
567 paddress (gdbarch
, BLOCK_END (block
)));
569 if (BLOCK_START (pblock
->block
) < BLOCK_START (block
))
570 BLOCK_START (pblock
->block
) = BLOCK_START (block
);
571 if (BLOCK_END (pblock
->block
) > BLOCK_END (block
))
572 BLOCK_END (pblock
->block
) = BLOCK_END (block
);
574 BLOCK_SUPERBLOCK (pblock
->block
) = block
;
579 block_set_using (block
,
581 ? buildsym_compunit
->m_global_using_directives
582 : buildsym_compunit
->m_local_using_directives
),
583 &objfile
->objfile_obstack
);
585 buildsym_compunit
->m_global_using_directives
= NULL
;
587 buildsym_compunit
->m_local_using_directives
= NULL
;
589 record_pending_block (objfile
, block
, opblock
);
595 finish_block (struct symbol
*symbol
,
596 struct pending
**listhead
,
597 struct pending_block
*old_blocks
,
598 const struct dynamic_prop
*static_link
,
599 CORE_ADDR start
, CORE_ADDR end
)
601 return finish_block_internal (symbol
, listhead
, old_blocks
, static_link
,
605 /* Record BLOCK on the list of all blocks in the file. Put it after
606 OPBLOCK, or at the beginning if opblock is NULL. This puts the
607 block in the list after all its subblocks.
609 Allocate the pending block struct in the objfile_obstack to save
610 time. This wastes a little space. FIXME: Is it worth it? */
613 record_pending_block (struct objfile
*objfile
, struct block
*block
,
614 struct pending_block
*opblock
)
616 struct pending_block
*pblock
;
618 if (pending_blocks
== NULL
)
619 obstack_init (&pending_block_obstack
);
621 pblock
= XOBNEW (&pending_block_obstack
, struct pending_block
);
622 pblock
->block
= block
;
625 pblock
->next
= opblock
->next
;
626 opblock
->next
= pblock
;
630 pblock
->next
= pending_blocks
;
631 pending_blocks
= pblock
;
636 /* Record that the range of addresses from START to END_INCLUSIVE
637 (inclusive, like it says) belongs to BLOCK. BLOCK's start and end
638 addresses must be set already. You must apply this function to all
639 BLOCK's children before applying it to BLOCK.
641 If a call to this function complicates the picture beyond that
642 already provided by BLOCK_START and BLOCK_END, then we create an
643 address map for the block. */
645 record_block_range (struct block
*block
,
646 CORE_ADDR start
, CORE_ADDR end_inclusive
)
648 /* If this is any different from the range recorded in the block's
649 own BLOCK_START and BLOCK_END, then note that the address map has
650 become interesting. Note that even if this block doesn't have
651 any "interesting" ranges, some later block might, so we still
652 need to record this block in the addrmap. */
653 if (start
!= BLOCK_START (block
)
654 || end_inclusive
+ 1 != BLOCK_END (block
))
655 pending_addrmap_interesting
= 1;
657 if (! pending_addrmap
)
659 obstack_init (&pending_addrmap_obstack
);
660 pending_addrmap
= addrmap_create_mutable (&pending_addrmap_obstack
);
663 addrmap_set_empty (pending_addrmap
, start
, end_inclusive
, block
);
666 static struct blockvector
*
667 make_blockvector (void)
669 struct objfile
*objfile
= buildsym_compunit
->objfile
;
670 struct pending_block
*next
;
671 struct blockvector
*blockvector
;
674 /* Count the length of the list of blocks. */
676 for (next
= pending_blocks
, i
= 0; next
; next
= next
->next
, i
++)
680 blockvector
= (struct blockvector
*)
681 obstack_alloc (&objfile
->objfile_obstack
,
682 (sizeof (struct blockvector
)
683 + (i
- 1) * sizeof (struct block
*)));
685 /* Copy the blocks into the blockvector. This is done in reverse
686 order, which happens to put the blocks into the proper order
687 (ascending starting address). finish_block has hair to insert
688 each block into the list after its subblocks in order to make
689 sure this is true. */
691 BLOCKVECTOR_NBLOCKS (blockvector
) = i
;
692 for (next
= pending_blocks
; next
; next
= next
->next
)
694 BLOCKVECTOR_BLOCK (blockvector
, --i
) = next
->block
;
697 free_pending_blocks ();
699 /* If we needed an address map for this symtab, record it in the
701 if (pending_addrmap
&& pending_addrmap_interesting
)
702 BLOCKVECTOR_MAP (blockvector
)
703 = addrmap_create_fixed (pending_addrmap
, &objfile
->objfile_obstack
);
705 BLOCKVECTOR_MAP (blockvector
) = 0;
707 /* Some compilers output blocks in the wrong order, but we depend on
708 their being in the right order so we can binary search. Check the
709 order and moan about it.
710 Note: Remember that the first two blocks are the global and static
711 blocks. We could special case that fact and begin checking at block 2.
712 To avoid making that assumption we do not. */
713 if (BLOCKVECTOR_NBLOCKS (blockvector
) > 1)
715 for (i
= 1; i
< BLOCKVECTOR_NBLOCKS (blockvector
); i
++)
717 if (BLOCK_START (BLOCKVECTOR_BLOCK (blockvector
, i
- 1))
718 > BLOCK_START (BLOCKVECTOR_BLOCK (blockvector
, i
)))
721 = BLOCK_START (BLOCKVECTOR_BLOCK (blockvector
, i
));
723 complaint (_("block at %s out of order"),
724 hex_string ((LONGEST
) start
));
729 return (blockvector
);
732 /* Start recording information about source code that came from an
733 included (or otherwise merged-in) source file with a different
734 name. NAME is the name of the file (cannot be NULL). */
737 start_subfile (const char *name
)
739 const char *subfile_dirname
;
740 struct subfile
*subfile
;
742 gdb_assert (buildsym_compunit
!= NULL
);
744 subfile_dirname
= buildsym_compunit
->comp_dir
.get ();
746 /* See if this subfile is already registered. */
748 for (subfile
= buildsym_compunit
->subfiles
; subfile
; subfile
= subfile
->next
)
752 /* If NAME is an absolute path, and this subfile is not, then
753 attempt to create an absolute path to compare. */
754 if (IS_ABSOLUTE_PATH (name
)
755 && !IS_ABSOLUTE_PATH (subfile
->name
)
756 && subfile_dirname
!= NULL
)
757 subfile_name
= concat (subfile_dirname
, SLASH_STRING
,
758 subfile
->name
, (char *) NULL
);
760 subfile_name
= subfile
->name
;
762 if (FILENAME_CMP (subfile_name
, name
) == 0)
764 current_subfile
= subfile
;
765 if (subfile_name
!= subfile
->name
)
766 xfree (subfile_name
);
769 if (subfile_name
!= subfile
->name
)
770 xfree (subfile_name
);
773 /* This subfile is not known. Add an entry for it. */
775 subfile
= XNEW (struct subfile
);
776 memset (subfile
, 0, sizeof (struct subfile
));
777 subfile
->buildsym_compunit
= buildsym_compunit
;
779 subfile
->next
= buildsym_compunit
->subfiles
;
780 buildsym_compunit
->subfiles
= subfile
;
782 current_subfile
= subfile
;
784 subfile
->name
= xstrdup (name
);
786 /* Initialize line-number recording for this subfile. */
787 subfile
->line_vector
= NULL
;
789 /* Default the source language to whatever can be deduced from the
790 filename. If nothing can be deduced (such as for a C/C++ include
791 file with a ".h" extension), then inherit whatever language the
792 previous subfile had. This kludgery is necessary because there
793 is no standard way in some object formats to record the source
794 language. Also, when symtabs are allocated we try to deduce a
795 language then as well, but it is too late for us to use that
796 information while reading symbols, since symtabs aren't allocated
797 until after all the symbols have been processed for a given
800 subfile
->language
= deduce_language_from_filename (subfile
->name
);
801 if (subfile
->language
== language_unknown
802 && subfile
->next
!= NULL
)
804 subfile
->language
= subfile
->next
->language
;
807 /* If the filename of this subfile ends in .C, then change the
808 language of any pending subfiles from C to C++. We also accept
809 any other C++ suffixes accepted by deduce_language_from_filename. */
810 /* Likewise for f2c. */
815 enum language sublang
= deduce_language_from_filename (subfile
->name
);
817 if (sublang
== language_cplus
|| sublang
== language_fortran
)
818 for (s
= buildsym_compunit
->subfiles
; s
!= NULL
; s
= s
->next
)
819 if (s
->language
== language_c
)
820 s
->language
= sublang
;
823 /* And patch up this file if necessary. */
824 if (subfile
->language
== language_c
825 && subfile
->next
!= NULL
826 && (subfile
->next
->language
== language_cplus
827 || subfile
->next
->language
== language_fortran
))
829 subfile
->language
= subfile
->next
->language
;
833 /* Delete the buildsym compunit. */
836 free_buildsym_compunit (void)
838 if (buildsym_compunit
== NULL
)
840 delete buildsym_compunit
;
841 buildsym_compunit
= NULL
;
842 current_subfile
= NULL
;
845 /* For stabs readers, the first N_SO symbol is assumed to be the
846 source file name, and the subfile struct is initialized using that
847 assumption. If another N_SO symbol is later seen, immediately
848 following the first one, then the first one is assumed to be the
849 directory name and the second one is really the source file name.
851 So we have to patch up the subfile struct by moving the old name
852 value to dirname and remembering the new name. Some sanity
853 checking is performed to ensure that the state of the subfile
854 struct is reasonable and that the old name we are assuming to be a
855 directory name actually is (by checking for a trailing '/'). */
858 patch_subfile_names (struct subfile
*subfile
, const char *name
)
861 && buildsym_compunit
->comp_dir
== NULL
862 && subfile
->name
!= NULL
863 && IS_DIR_SEPARATOR (subfile
->name
[strlen (subfile
->name
) - 1]))
865 buildsym_compunit
->comp_dir
.reset (subfile
->name
);
866 subfile
->name
= xstrdup (name
);
867 set_last_source_file (name
);
869 /* Default the source language to whatever can be deduced from
870 the filename. If nothing can be deduced (such as for a C/C++
871 include file with a ".h" extension), then inherit whatever
872 language the previous subfile had. This kludgery is
873 necessary because there is no standard way in some object
874 formats to record the source language. Also, when symtabs
875 are allocated we try to deduce a language then as well, but
876 it is too late for us to use that information while reading
877 symbols, since symtabs aren't allocated until after all the
878 symbols have been processed for a given source file. */
880 subfile
->language
= deduce_language_from_filename (subfile
->name
);
881 if (subfile
->language
== language_unknown
882 && subfile
->next
!= NULL
)
884 subfile
->language
= subfile
->next
->language
;
889 /* Handle the N_BINCL and N_EINCL symbol types that act like N_SOL for
890 switching source files (different subfiles, as we call them) within
891 one object file, but using a stack rather than in an arbitrary
897 gdb_assert (buildsym_compunit
!= nullptr);
898 gdb_assert (current_subfile
!= NULL
&& current_subfile
->name
!= NULL
);
899 buildsym_compunit
->m_subfile_stack
.push_back (current_subfile
->name
);
905 gdb_assert (buildsym_compunit
!= nullptr);
906 gdb_assert (!buildsym_compunit
->m_subfile_stack
.empty ());
907 const char *name
= buildsym_compunit
->m_subfile_stack
.back ();
908 buildsym_compunit
->m_subfile_stack
.pop_back ();
912 /* Add a linetable entry for line number LINE and address PC to the
913 line vector for SUBFILE. */
916 record_line (struct subfile
*subfile
, int line
, CORE_ADDR pc
)
918 struct linetable_entry
*e
;
920 /* Ignore the dummy line number in libg.o */
926 /* Make sure line vector exists and is big enough. */
927 if (!subfile
->line_vector
)
929 subfile
->line_vector_length
= INITIAL_LINE_VECTOR_LENGTH
;
930 subfile
->line_vector
= (struct linetable
*)
931 xmalloc (sizeof (struct linetable
)
932 + subfile
->line_vector_length
* sizeof (struct linetable_entry
));
933 subfile
->line_vector
->nitems
= 0;
934 buildsym_compunit
->m_have_line_numbers
= true;
937 if (subfile
->line_vector
->nitems
+ 1 >= subfile
->line_vector_length
)
939 subfile
->line_vector_length
*= 2;
940 subfile
->line_vector
= (struct linetable
*)
941 xrealloc ((char *) subfile
->line_vector
,
942 (sizeof (struct linetable
)
943 + (subfile
->line_vector_length
944 * sizeof (struct linetable_entry
))));
947 /* Normally, we treat lines as unsorted. But the end of sequence
948 marker is special. We sort line markers at the same PC by line
949 number, so end of sequence markers (which have line == 0) appear
950 first. This is right if the marker ends the previous function,
951 and there is no padding before the next function. But it is
952 wrong if the previous line was empty and we are now marking a
953 switch to a different subfile. We must leave the end of sequence
954 marker at the end of this group of lines, not sort the empty line
955 to after the marker. The easiest way to accomplish this is to
956 delete any empty lines from our table, if they are followed by
957 end of sequence markers. All we lose is the ability to set
958 breakpoints at some lines which contain no instructions
960 if (line
== 0 && subfile
->line_vector
->nitems
> 0)
962 e
= subfile
->line_vector
->item
+ subfile
->line_vector
->nitems
- 1;
963 while (subfile
->line_vector
->nitems
> 0 && e
->pc
== pc
)
966 subfile
->line_vector
->nitems
--;
970 e
= subfile
->line_vector
->item
+ subfile
->line_vector
->nitems
++;
975 /* Needed in order to sort line tables from IBM xcoff files. Sigh! */
978 compare_line_numbers (const void *ln1p
, const void *ln2p
)
980 struct linetable_entry
*ln1
= (struct linetable_entry
*) ln1p
;
981 struct linetable_entry
*ln2
= (struct linetable_entry
*) ln2p
;
983 /* Note: this code does not assume that CORE_ADDRs can fit in ints.
984 Please keep it that way. */
985 if (ln1
->pc
< ln2
->pc
)
988 if (ln1
->pc
> ln2
->pc
)
991 /* If pc equal, sort by line. I'm not sure whether this is optimum
992 behavior (see comment at struct linetable in symtab.h). */
993 return ln1
->line
- ln2
->line
;
996 /* See buildsym.h. */
998 struct compunit_symtab
*
999 buildsym_compunit_symtab (void)
1001 gdb_assert (buildsym_compunit
!= NULL
);
1003 return buildsym_compunit
->compunit_symtab
;
1006 /* See buildsym.h. */
1008 struct macro_table
*
1009 get_macro_table (void)
1011 struct objfile
*objfile
;
1013 gdb_assert (buildsym_compunit
!= NULL
);
1014 return buildsym_compunit
->get_macro_table ();
1017 /* Init state to prepare for building a symtab.
1018 Note: This can't be done in buildsym_init because dbxread.c and xcoffread.c
1019 can call start_symtab+end_symtab multiple times after one call to
1023 prepare_for_building ()
1025 local_symbols
= NULL
;
1027 /* These should have been reset either by successful completion of building
1028 a symtab, or by the scoped_free_pendings destructor. */
1029 gdb_assert (file_symbols
== NULL
);
1030 gdb_assert (global_symbols
== NULL
);
1031 gdb_assert (pending_addrmap
== NULL
);
1032 gdb_assert (current_subfile
== NULL
);
1033 gdb_assert (buildsym_compunit
== nullptr);
1036 /* Start a new symtab for a new source file in OBJFILE. Called, for example,
1037 when a stabs symbol of type N_SO is seen, or when a DWARF
1038 TAG_compile_unit DIE is seen. It indicates the start of data for
1039 one original source file.
1041 NAME is the name of the file (cannot be NULL). COMP_DIR is the
1042 directory in which the file was compiled (or NULL if not known).
1043 START_ADDR is the lowest address of objects in the file (or 0 if
1044 not known). LANGUAGE is the language of the source file, or
1045 language_unknown if not known, in which case it'll be deduced from
1048 struct compunit_symtab
*
1049 start_symtab (struct objfile
*objfile
, const char *name
, const char *comp_dir
,
1050 CORE_ADDR start_addr
, enum language language
)
1052 prepare_for_building ();
1054 buildsym_compunit
= new struct buildsym_compunit (objfile
, name
, comp_dir
,
1055 language
, start_addr
);
1057 /* Allocate the compunit symtab now. The caller needs it to allocate
1058 non-primary symtabs. It is also needed by get_macro_table. */
1059 buildsym_compunit
->compunit_symtab
= allocate_compunit_symtab (objfile
,
1062 /* Build the subfile for NAME (the main source file) so that we can record
1063 a pointer to it for later.
1064 IMPORTANT: Do not allocate a struct symtab for NAME here.
1065 It can happen that the debug info provides a different path to NAME than
1066 DIRNAME,NAME. We cope with this in watch_main_source_file_lossage but
1067 that only works if the main_subfile doesn't have a symtab yet. */
1068 start_subfile (name
);
1069 /* Save this so that we don't have to go looking for it at the end
1070 of the subfiles list. */
1071 buildsym_compunit
->main_subfile
= current_subfile
;
1073 return buildsym_compunit
->compunit_symtab
;
1076 /* Restart compilation for a symtab.
1077 CUST is the result of end_expandable_symtab.
1078 NAME, START_ADDR are the source file we are resuming with.
1080 This is used when a symtab is built from multiple sources.
1081 The symtab is first built with start_symtab/end_expandable_symtab
1082 and then for each additional piece call restart_symtab/augment_*_symtab.
1083 Note: At the moment there is only augment_type_symtab. */
1086 restart_symtab (struct compunit_symtab
*cust
,
1087 const char *name
, CORE_ADDR start_addr
)
1089 prepare_for_building ();
1092 = new struct buildsym_compunit (COMPUNIT_OBJFILE (cust
),
1094 COMPUNIT_DIRNAME (cust
),
1095 compunit_language (cust
),
1097 buildsym_compunit
->compunit_symtab
= cust
;
1100 /* Subroutine of end_symtab to simplify it. Look for a subfile that
1101 matches the main source file's basename. If there is only one, and
1102 if the main source file doesn't have any symbol or line number
1103 information, then copy this file's symtab and line_vector to the
1104 main source file's subfile and discard the other subfile. This can
1105 happen because of a compiler bug or from the user playing games
1106 with #line or from things like a distributed build system that
1107 manipulates the debug info. This can also happen from an innocent
1108 symlink in the paths, we don't canonicalize paths here. */
1111 watch_main_source_file_lossage (void)
1113 struct subfile
*mainsub
, *subfile
;
1115 /* We have to watch for buildsym_compunit == NULL here. It's a quirk of
1116 end_symtab, it can return NULL so there may not be a main subfile. */
1117 if (buildsym_compunit
== NULL
)
1120 /* Get the main source file. */
1121 mainsub
= buildsym_compunit
->main_subfile
;
1123 /* If the main source file doesn't have any line number or symbol
1124 info, look for an alias in another subfile. */
1126 if (mainsub
->line_vector
== NULL
1127 && mainsub
->symtab
== NULL
)
1129 const char *mainbase
= lbasename (mainsub
->name
);
1131 struct subfile
*prevsub
;
1132 struct subfile
*mainsub_alias
= NULL
;
1133 struct subfile
*prev_mainsub_alias
= NULL
;
1136 for (subfile
= buildsym_compunit
->subfiles
;
1138 subfile
= subfile
->next
)
1140 if (subfile
== mainsub
)
1142 if (filename_cmp (lbasename (subfile
->name
), mainbase
) == 0)
1145 mainsub_alias
= subfile
;
1146 prev_mainsub_alias
= prevsub
;
1151 if (nr_matches
== 1)
1153 gdb_assert (mainsub_alias
!= NULL
&& mainsub_alias
!= mainsub
);
1155 /* Found a match for the main source file.
1156 Copy its line_vector and symtab to the main subfile
1157 and then discard it. */
1159 mainsub
->line_vector
= mainsub_alias
->line_vector
;
1160 mainsub
->line_vector_length
= mainsub_alias
->line_vector_length
;
1161 mainsub
->symtab
= mainsub_alias
->symtab
;
1163 if (prev_mainsub_alias
== NULL
)
1164 buildsym_compunit
->subfiles
= mainsub_alias
->next
;
1166 prev_mainsub_alias
->next
= mainsub_alias
->next
;
1167 xfree (mainsub_alias
->name
);
1168 xfree (mainsub_alias
);
1173 /* Reset state after a successful building of a symtab.
1174 This exists because dbxread.c and xcoffread.c can call
1175 start_symtab+end_symtab multiple times after one call to buildsym_init,
1176 and before the scoped_free_pendings destructor is called.
1177 We keep the free_pendings list around for dbx/xcoff sake. */
1180 reset_symtab_globals (void)
1182 local_symbols
= NULL
;
1183 file_symbols
= NULL
;
1184 global_symbols
= NULL
;
1186 if (pending_addrmap
)
1187 obstack_free (&pending_addrmap_obstack
, NULL
);
1188 pending_addrmap
= NULL
;
1190 free_buildsym_compunit ();
1193 /* Implementation of the first part of end_symtab. It allows modifying
1194 STATIC_BLOCK before it gets finalized by end_symtab_from_static_block.
1195 If the returned value is NULL there is no blockvector created for
1196 this symtab (you still must call end_symtab_from_static_block).
1198 END_ADDR is the same as for end_symtab: the address of the end of the
1201 If EXPANDABLE is non-zero the STATIC_BLOCK dictionary is made
1204 If REQUIRED is non-zero, then a symtab is created even if it does
1205 not contain any symbols. */
1208 end_symtab_get_static_block (CORE_ADDR end_addr
, int expandable
, int required
)
1210 struct objfile
*objfile
= buildsym_compunit
->objfile
;
1212 /* Finish the lexical context of the last function in the file; pop
1213 the context stack. */
1215 if (!buildsym_compunit
->m_context_stack
.empty ())
1217 struct context_stack cstk
= pop_context ();
1219 /* Make a block for the local symbols within. */
1220 finish_block (cstk
.name
, &local_symbols
, cstk
.old_blocks
, NULL
,
1221 cstk
.start_addr
, end_addr
);
1223 if (!buildsym_compunit
->m_context_stack
.empty ())
1225 /* This is said to happen with SCO. The old coffread.c
1226 code simply emptied the context stack, so we do the
1227 same. FIXME: Find out why it is happening. This is not
1228 believed to happen in most cases (even for coffread.c);
1229 it used to be an abort(). */
1230 complaint (_("Context stack not empty in end_symtab"));
1231 buildsym_compunit
->m_context_stack
.clear ();
1235 /* Reordered executables may have out of order pending blocks; if
1236 OBJF_REORDERED is true, then sort the pending blocks. */
1238 if ((objfile
->flags
& OBJF_REORDERED
) && pending_blocks
)
1240 struct pending_block
*pb
;
1242 std::vector
<block
*> barray
;
1244 for (pb
= pending_blocks
; pb
!= NULL
; pb
= pb
->next
)
1245 barray
.push_back (pb
->block
);
1247 /* Sort blocks by start address in descending order. Blocks with the
1248 same start address must remain in the original order to preserve
1249 inline function caller/callee relationships. */
1250 std::stable_sort (barray
.begin (), barray
.end (),
1251 [] (const block
*a
, const block
*b
)
1253 return BLOCK_START (a
) > BLOCK_START (b
);
1257 for (pb
= pending_blocks
; pb
!= NULL
; pb
= pb
->next
)
1258 pb
->block
= barray
[i
++];
1261 /* Cleanup any undefined types that have been left hanging around
1262 (this needs to be done before the finish_blocks so that
1263 file_symbols is still good).
1265 Both cleanup_undefined_stabs_types and finish_global_stabs are stabs
1266 specific, but harmless for other symbol readers, since on gdb
1267 startup or when finished reading stabs, the state is set so these
1268 are no-ops. FIXME: Is this handled right in case of QUIT? Can
1269 we make this cleaner? */
1271 cleanup_undefined_stabs_types (objfile
);
1272 finish_global_stabs (objfile
);
1275 && pending_blocks
== NULL
1276 && file_symbols
== NULL
1277 && global_symbols
== NULL
1278 && !buildsym_compunit
->m_have_line_numbers
1279 && buildsym_compunit
->m_pending_macros
== NULL
1280 && buildsym_compunit
->m_global_using_directives
== NULL
)
1282 /* Ignore symtabs that have no functions with real debugging info. */
1287 /* Define the STATIC_BLOCK. */
1288 return finish_block_internal (NULL
, &file_symbols
, NULL
, NULL
,
1289 buildsym_compunit
->m_last_source_start_addr
,
1290 end_addr
, 0, expandable
);
1294 /* Subroutine of end_symtab_from_static_block to simplify it.
1295 Handle the "have blockvector" case.
1296 See end_symtab_from_static_block for a description of the arguments. */
1298 static struct compunit_symtab
*
1299 end_symtab_with_blockvector (struct block
*static_block
,
1300 int section
, int expandable
)
1302 struct objfile
*objfile
= buildsym_compunit
->objfile
;
1303 struct compunit_symtab
*cu
= buildsym_compunit
->compunit_symtab
;
1304 struct symtab
*symtab
;
1305 struct blockvector
*blockvector
;
1306 struct subfile
*subfile
;
1309 gdb_assert (static_block
!= NULL
);
1310 gdb_assert (buildsym_compunit
!= NULL
);
1311 gdb_assert (buildsym_compunit
->subfiles
!= NULL
);
1313 end_addr
= BLOCK_END (static_block
);
1315 /* Create the GLOBAL_BLOCK and build the blockvector. */
1316 finish_block_internal (NULL
, &global_symbols
, NULL
, NULL
,
1317 buildsym_compunit
->m_last_source_start_addr
, end_addr
,
1319 blockvector
= make_blockvector ();
1321 /* Read the line table if it has to be read separately.
1322 This is only used by xcoffread.c. */
1323 if (objfile
->sf
->sym_read_linetable
!= NULL
)
1324 objfile
->sf
->sym_read_linetable (objfile
);
1326 /* Handle the case where the debug info specifies a different path
1327 for the main source file. It can cause us to lose track of its
1328 line number information. */
1329 watch_main_source_file_lossage ();
1331 /* Now create the symtab objects proper, if not already done,
1332 one for each subfile. */
1334 for (subfile
= buildsym_compunit
->subfiles
;
1336 subfile
= subfile
->next
)
1338 int linetablesize
= 0;
1340 if (subfile
->line_vector
)
1342 linetablesize
= sizeof (struct linetable
) +
1343 subfile
->line_vector
->nitems
* sizeof (struct linetable_entry
);
1345 /* Like the pending blocks, the line table may be
1346 scrambled in reordered executables. Sort it if
1347 OBJF_REORDERED is true. */
1348 if (objfile
->flags
& OBJF_REORDERED
)
1349 qsort (subfile
->line_vector
->item
,
1350 subfile
->line_vector
->nitems
,
1351 sizeof (struct linetable_entry
), compare_line_numbers
);
1354 /* Allocate a symbol table if necessary. */
1355 if (subfile
->symtab
== NULL
)
1356 subfile
->symtab
= allocate_symtab (cu
, subfile
->name
);
1357 symtab
= subfile
->symtab
;
1359 /* Fill in its components. */
1361 if (subfile
->line_vector
)
1363 /* Reallocate the line table on the symbol obstack. */
1364 SYMTAB_LINETABLE (symtab
) = (struct linetable
*)
1365 obstack_alloc (&objfile
->objfile_obstack
, linetablesize
);
1366 memcpy (SYMTAB_LINETABLE (symtab
), subfile
->line_vector
,
1371 SYMTAB_LINETABLE (symtab
) = NULL
;
1374 /* Use whatever language we have been using for this
1375 subfile, not the one that was deduced in allocate_symtab
1376 from the filename. We already did our own deducing when
1377 we created the subfile, and we may have altered our
1378 opinion of what language it is from things we found in
1380 symtab
->language
= subfile
->language
;
1383 /* Make sure the symtab of main_subfile is the first in its list. */
1385 struct symtab
*main_symtab
, *prev_symtab
;
1387 main_symtab
= buildsym_compunit
->main_subfile
->symtab
;
1389 ALL_COMPUNIT_FILETABS (cu
, symtab
)
1391 if (symtab
== main_symtab
)
1393 if (prev_symtab
!= NULL
)
1395 prev_symtab
->next
= main_symtab
->next
;
1396 main_symtab
->next
= COMPUNIT_FILETABS (cu
);
1397 COMPUNIT_FILETABS (cu
) = main_symtab
;
1401 prev_symtab
= symtab
;
1403 gdb_assert (main_symtab
== COMPUNIT_FILETABS (cu
));
1406 /* Fill out the compunit symtab. */
1408 if (buildsym_compunit
->comp_dir
!= NULL
)
1410 /* Reallocate the dirname on the symbol obstack. */
1411 const char *comp_dir
= buildsym_compunit
->comp_dir
.get ();
1412 COMPUNIT_DIRNAME (cu
)
1413 = (const char *) obstack_copy0 (&objfile
->objfile_obstack
,
1414 comp_dir
, strlen (comp_dir
));
1417 /* Save the debug format string (if any) in the symtab. */
1418 COMPUNIT_DEBUGFORMAT (cu
) = buildsym_compunit
->debugformat
;
1420 /* Similarly for the producer. */
1421 COMPUNIT_PRODUCER (cu
) = buildsym_compunit
->producer
;
1423 COMPUNIT_BLOCKVECTOR (cu
) = blockvector
;
1425 struct block
*b
= BLOCKVECTOR_BLOCK (blockvector
, GLOBAL_BLOCK
);
1427 set_block_compunit_symtab (b
, cu
);
1430 COMPUNIT_BLOCK_LINE_SECTION (cu
) = section
;
1432 COMPUNIT_MACRO_TABLE (cu
) = buildsym_compunit
->release_macros ();
1434 /* Default any symbols without a specified symtab to the primary symtab. */
1438 /* The main source file's symtab. */
1439 symtab
= COMPUNIT_FILETABS (cu
);
1441 for (block_i
= 0; block_i
< BLOCKVECTOR_NBLOCKS (blockvector
); block_i
++)
1443 struct block
*block
= BLOCKVECTOR_BLOCK (blockvector
, block_i
);
1445 struct dict_iterator iter
;
1447 /* Inlined functions may have symbols not in the global or
1448 static symbol lists. */
1449 if (BLOCK_FUNCTION (block
) != NULL
)
1450 if (symbol_symtab (BLOCK_FUNCTION (block
)) == NULL
)
1451 symbol_set_symtab (BLOCK_FUNCTION (block
), symtab
);
1453 /* Note that we only want to fix up symbols from the local
1454 blocks, not blocks coming from included symtabs. That is why
1455 we use ALL_DICT_SYMBOLS here and not ALL_BLOCK_SYMBOLS. */
1456 ALL_DICT_SYMBOLS (BLOCK_DICT (block
), iter
, sym
)
1457 if (symbol_symtab (sym
) == NULL
)
1458 symbol_set_symtab (sym
, symtab
);
1462 add_compunit_symtab_to_objfile (cu
);
1467 /* Implementation of the second part of end_symtab. Pass STATIC_BLOCK
1468 as value returned by end_symtab_get_static_block.
1470 SECTION is the same as for end_symtab: the section number
1471 (in objfile->section_offsets) of the blockvector and linetable.
1473 If EXPANDABLE is non-zero the GLOBAL_BLOCK dictionary is made
1476 struct compunit_symtab
*
1477 end_symtab_from_static_block (struct block
*static_block
,
1478 int section
, int expandable
)
1480 struct compunit_symtab
*cu
;
1482 if (static_block
== NULL
)
1484 /* Handle the "no blockvector" case.
1485 When this happens there is nothing to record, so there's nothing
1486 to do: memory will be freed up later.
1488 Note: We won't be adding a compunit to the objfile's list of
1489 compunits, so there's nothing to unchain. However, since each symtab
1490 is added to the objfile's obstack we can't free that space.
1491 We could do better, but this is believed to be a sufficiently rare
1496 cu
= end_symtab_with_blockvector (static_block
, section
, expandable
);
1498 reset_symtab_globals ();
1503 /* Finish the symbol definitions for one main source file, close off
1504 all the lexical contexts for that file (creating struct block's for
1505 them), then make the struct symtab for that file and put it in the
1508 END_ADDR is the address of the end of the file's text. SECTION is
1509 the section number (in objfile->section_offsets) of the blockvector
1512 Note that it is possible for end_symtab() to return NULL. In
1513 particular, for the DWARF case at least, it will return NULL when
1514 it finds a compilation unit that has exactly one DIE, a
1515 TAG_compile_unit DIE. This can happen when we link in an object
1516 file that was compiled from an empty source file. Returning NULL
1517 is probably not the correct thing to do, because then gdb will
1518 never know about this empty file (FIXME).
1520 If you need to modify STATIC_BLOCK before it is finalized you should
1521 call end_symtab_get_static_block and end_symtab_from_static_block
1524 struct compunit_symtab
*
1525 end_symtab (CORE_ADDR end_addr
, int section
)
1527 struct block
*static_block
;
1529 static_block
= end_symtab_get_static_block (end_addr
, 0, 0);
1530 return end_symtab_from_static_block (static_block
, section
, 0);
1533 /* Same as end_symtab except create a symtab that can be later added to. */
1535 struct compunit_symtab
*
1536 end_expandable_symtab (CORE_ADDR end_addr
, int section
)
1538 struct block
*static_block
;
1540 static_block
= end_symtab_get_static_block (end_addr
, 1, 0);
1541 return end_symtab_from_static_block (static_block
, section
, 1);
1544 /* Subroutine of augment_type_symtab to simplify it.
1545 Attach the main source file's symtab to all symbols in PENDING_LIST that
1549 set_missing_symtab (struct pending
*pending_list
,
1550 struct compunit_symtab
*cu
)
1552 struct pending
*pending
;
1555 for (pending
= pending_list
; pending
!= NULL
; pending
= pending
->next
)
1557 for (i
= 0; i
< pending
->nsyms
; ++i
)
1559 if (symbol_symtab (pending
->symbol
[i
]) == NULL
)
1560 symbol_set_symtab (pending
->symbol
[i
], COMPUNIT_FILETABS (cu
));
1565 /* Same as end_symtab, but for the case where we're adding more symbols
1566 to an existing symtab that is known to contain only type information.
1567 This is the case for DWARF4 Type Units. */
1570 augment_type_symtab (void)
1572 struct compunit_symtab
*cust
= buildsym_compunit
->compunit_symtab
;
1573 const struct blockvector
*blockvector
= COMPUNIT_BLOCKVECTOR (cust
);
1575 if (!buildsym_compunit
->m_context_stack
.empty ())
1576 complaint (_("Context stack not empty in augment_type_symtab"));
1577 if (pending_blocks
!= NULL
)
1578 complaint (_("Blocks in a type symtab"));
1579 if (buildsym_compunit
->m_pending_macros
!= NULL
)
1580 complaint (_("Macro in a type symtab"));
1581 if (buildsym_compunit
->m_have_line_numbers
)
1582 complaint (_("Line numbers recorded in a type symtab"));
1584 if (file_symbols
!= NULL
)
1586 struct block
*block
= BLOCKVECTOR_BLOCK (blockvector
, STATIC_BLOCK
);
1588 /* First mark any symbols without a specified symtab as belonging
1589 to the primary symtab. */
1590 set_missing_symtab (file_symbols
, cust
);
1592 dict_add_pending (BLOCK_DICT (block
), file_symbols
);
1595 if (global_symbols
!= NULL
)
1597 struct block
*block
= BLOCKVECTOR_BLOCK (blockvector
, GLOBAL_BLOCK
);
1599 /* First mark any symbols without a specified symtab as belonging
1600 to the primary symtab. */
1601 set_missing_symtab (global_symbols
, cust
);
1603 dict_add_pending (BLOCK_DICT (block
), global_symbols
);
1606 reset_symtab_globals ();
1609 /* Push a context block. Args are an identifying nesting level
1610 (checkable when you pop it), and the starting PC address of this
1613 struct context_stack
*
1614 push_context (int desc
, CORE_ADDR valu
)
1616 gdb_assert (buildsym_compunit
!= nullptr);
1618 buildsym_compunit
->m_context_stack
.emplace_back ();
1619 struct context_stack
*newobj
= &buildsym_compunit
->m_context_stack
.back ();
1621 newobj
->depth
= desc
;
1622 newobj
->locals
= local_symbols
;
1623 newobj
->old_blocks
= pending_blocks
;
1624 newobj
->start_addr
= valu
;
1625 newobj
->local_using_directives
1626 = buildsym_compunit
->m_local_using_directives
;
1627 newobj
->name
= NULL
;
1629 local_symbols
= NULL
;
1630 buildsym_compunit
->m_local_using_directives
= NULL
;
1635 /* Pop a context block. Returns the address of the context block just
1638 struct context_stack
1641 gdb_assert (buildsym_compunit
!= nullptr);
1642 gdb_assert (!buildsym_compunit
->m_context_stack
.empty ());
1643 struct context_stack result
= buildsym_compunit
->m_context_stack
.back ();
1644 buildsym_compunit
->m_context_stack
.pop_back ();
1651 record_debugformat (const char *format
)
1653 buildsym_compunit
->debugformat
= format
;
1657 record_producer (const char *producer
)
1659 buildsym_compunit
->producer
= producer
;
1664 /* See buildsym.h. */
1667 set_last_source_file (const char *name
)
1669 gdb_assert (buildsym_compunit
!= nullptr || name
== nullptr);
1670 if (buildsym_compunit
!= nullptr)
1671 buildsym_compunit
->set_last_source_file (name
);
1674 /* See buildsym.h. */
1677 get_last_source_file (void)
1679 if (buildsym_compunit
== nullptr)
1681 return buildsym_compunit
->m_last_source_file
.get ();
1684 /* See buildsym.h. */
1687 set_last_source_start_addr (CORE_ADDR addr
)
1689 gdb_assert (buildsym_compunit
!= nullptr);
1690 buildsym_compunit
->m_last_source_start_addr
= addr
;
1693 /* See buildsym.h. */
1696 get_last_source_start_addr ()
1698 gdb_assert (buildsym_compunit
!= nullptr);
1699 return buildsym_compunit
->m_last_source_start_addr
;
1702 /* See buildsym.h. */
1704 struct using_direct
**
1705 get_local_using_directives ()
1707 gdb_assert (buildsym_compunit
!= nullptr);
1708 return &buildsym_compunit
->m_local_using_directives
;
1711 /* See buildsym.h. */
1714 set_local_using_directives (struct using_direct
*new_local
)
1716 gdb_assert (buildsym_compunit
!= nullptr);
1717 buildsym_compunit
->m_local_using_directives
= new_local
;
1720 /* See buildsym.h. */
1722 struct using_direct
**
1723 get_global_using_directives ()
1725 gdb_assert (buildsym_compunit
!= nullptr);
1726 return &buildsym_compunit
->m_global_using_directives
;
1729 /* See buildsym.h. */
1732 outermost_context_p ()
1734 gdb_assert (buildsym_compunit
!= nullptr);
1735 return buildsym_compunit
->m_context_stack
.empty ();
1738 /* See buildsym.h. */
1740 struct context_stack
*
1741 get_current_context_stack ()
1743 gdb_assert (buildsym_compunit
!= nullptr);
1744 if (buildsym_compunit
->m_context_stack
.empty ())
1746 return &buildsym_compunit
->m_context_stack
.back ();
1749 /* See buildsym.h. */
1752 get_context_stack_depth ()
1754 gdb_assert (buildsym_compunit
!= nullptr);
1755 return buildsym_compunit
->m_context_stack
.size ();
1760 /* Initialize anything that needs initializing when starting to read a
1761 fresh piece of a symbol file, e.g. reading in the stuff
1762 corresponding to a psymtab. */
1767 pending_addrmap_interesting
= 0;
1769 /* Ensure the scoped_free_pendings destructor was called after
1771 gdb_assert (free_pendings
== NULL
);
1772 gdb_assert (pending_blocks
== NULL
);
1773 gdb_assert (file_symbols
== NULL
);
1774 gdb_assert (global_symbols
== NULL
);
1775 gdb_assert (pending_addrmap
== NULL
);
1776 gdb_assert (buildsym_compunit
== NULL
);