1 /* DWARF 2 debugging format support for GDB.
3 Copyright (C) 1994-2022 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include <unordered_map>
25 #include "dwarf2/comp-unit-head.h"
26 #include "dwarf2/index-cache.h"
27 #include "dwarf2/section.h"
28 #include "filename-seen-cache.h"
29 #include "gdb_obstack.h"
30 #include "gdbsupport/hash_enum.h"
31 #include "gdbsupport/function-view.h"
34 /* Hold 'maintenance (set|show) dwarf' commands. */
35 extern struct cmd_list_element
*set_dwarf_cmdlist
;
36 extern struct cmd_list_element
*show_dwarf_cmdlist
;
40 int nr_uniq_abbrev_tables
;
42 int nr_symtab_sharers
;
43 int nr_stmt_less_type_units
;
44 int nr_all_type_units_reallocs
;
49 struct dwarf2_debug_sections
;
50 struct dwarf2_per_bfd
;
51 struct dwarf2_per_cu_data
;
52 struct dwarf2_psymtab
;
54 struct mapped_debug_names
;
55 struct signatured_type
;
56 struct type_unit_group
;
58 /* One item on the queue of compilation units to read in full symbols
60 struct dwarf2_queue_item
62 dwarf2_queue_item (dwarf2_per_cu_data
*cu
, dwarf2_per_objfile
*per_objfile
,
65 per_objfile (per_objfile
),
66 pretend_language (lang
)
70 ~dwarf2_queue_item ();
72 DISABLE_COPY_AND_ASSIGN (dwarf2_queue_item
);
74 dwarf2_per_cu_data
*per_cu
;
75 dwarf2_per_objfile
*per_objfile
;
76 enum language pretend_language
;
79 /* A deleter for dwarf2_per_cu_data that knows to downcast to
80 signatured_type as appropriate. This approach lets us avoid a
81 virtual destructor, which saves a bit of space. */
83 struct dwarf2_per_cu_data_deleter
85 void operator() (dwarf2_per_cu_data
*data
);
88 /* A specialization of unique_ptr for dwarf2_per_cu_data and
90 typedef std::unique_ptr
<dwarf2_per_cu_data
, dwarf2_per_cu_data_deleter
>
91 dwarf2_per_cu_data_up
;
93 /* Persistent data held for a compilation unit, even when not
94 processing it. We put a pointer to this structure in the
97 struct dwarf2_per_cu_data
101 is_debug_types (false),
103 reading_dwo_directly (false),
105 m_header_read_in (false),
107 lang (language_unknown
)
111 /* The start offset and length of this compilation unit.
112 NOTE: Unlike comp_unit_head.length, this length includes
114 If the DIE refers to a DWO file, this is always of the original die,
116 sect_offset sect_off
{};
117 unsigned int length
= 0;
119 /* DWARF standard version this data has been read from (such as 4 or 5). */
120 unsigned char dwarf_version
= 0;
122 /* Flag indicating this compilation unit will be read in before
123 any of the current compilation units are processed. */
124 unsigned int queued
: 1;
126 /* Non-zero if this CU is from .debug_types.
127 Struct dwarf2_per_cu_data is contained in struct signatured_type iff
129 unsigned int is_debug_types
: 1;
131 /* Non-zero if this CU is from the .dwz file. */
132 unsigned int is_dwz
: 1;
134 /* Non-zero if reading a TU directly from a DWO file, bypassing the stub.
135 This flag is only valid if is_debug_types is true.
136 We can't read a CU directly from a DWO file: There are required
137 attributes in the stub. */
138 unsigned int reading_dwo_directly
: 1;
140 /* Non-zero if the TU has been read.
141 This is used to assist the "Stay in DWO Optimization" for Fission:
142 When reading a DWO, it's faster to read TUs from the DWO instead of
143 fetching them from random other DWOs (due to comdat folding).
144 If the TU has already been read, the optimization is unnecessary
145 (and unwise - we don't want to change where gdb thinks the TU lives
147 This flag is only valid if is_debug_types is true. */
148 unsigned int tu_read
: 1;
150 /* True if HEADER has been read in.
152 Don't access this field directly. It should be private, but we can't make
153 it private at the moment. */
154 mutable bool m_header_read_in
: 1;
156 /* The unit type of this CU. */
157 ENUM_BITFIELD (dwarf_unit_type
) unit_type
: 8;
159 /* The language of this CU. */
160 ENUM_BITFIELD (language
) lang
: LANGUAGE_BITS
;
162 /* Our index in the unshared "symtabs" vector. */
165 /* The section this CU/TU lives in.
166 If the DIE refers to a DWO file, this is always the original die,
168 struct dwarf2_section_info
*section
= nullptr;
170 /* Backlink to the owner of this. */
171 dwarf2_per_bfd
*per_bfd
= nullptr;
173 /* DWARF header of this CU. Note that dwarf2_cu reads its own version of the
174 header, which may differ from this one, since it may pass rcuh_kind::TYPE
175 to read_comp_unit_head, whereas for dwarf2_per_cu_data we always pass
178 Don't access this field directly, use the get_header method instead. It
179 should be private, but we can't make it private at the moment. */
180 mutable comp_unit_head m_header
{};
182 /* When dwarf2_per_bfd::using_index is true, the 'quick' field
183 is active. Otherwise, the 'psymtab' field is active. */
186 /* The partial symbol table associated with this compilation unit,
187 or NULL for unread partial units. */
188 dwarf2_psymtab
*psymtab
;
190 /* Data needed by the "quick" functions. */
191 struct dwarf2_per_cu_quick_data
*quick
;
194 /* The CUs we import using DW_TAG_imported_unit. This is filled in
195 while reading psymtabs, used to compute the psymtab dependencies,
196 and then cleared. Then it is filled in again while reading full
197 symbols, and only deleted when the objfile is destroyed.
199 This is also used to work around a difference between the way gold
200 generates .gdb_index version <=7 and the way gdb does. Arguably this
201 is a gold bug. For symbols coming from TUs, gold records in the index
202 the CU that includes the TU instead of the TU itself. This breaks
203 dw2_lookup_symbol: It assumes that if the index says symbol X lives
204 in CU/TU Y, then one need only expand Y and a subsequent lookup in Y
205 will find X. Alas TUs live in their own symtab, so after expanding CU Y
206 we need to look in TU Z to find X. Fortunately, this is akin to
207 DW_TAG_imported_unit, so we just use the same mechanism: For
208 .gdb_index version <=7 this also records the TUs that the CU referred
209 to. Concurrently with this change gdb was modified to emit version 8
210 indices so we only pay a price for gold generated indices.
211 http://sourceware.org/bugzilla/show_bug.cgi?id=15021.
213 This currently needs to be a public member due to how
214 dwarf2_per_cu_data is allocated and used. Ideally in future things
215 could be refactored to make this private. Until then please try to
216 avoid direct access to this member, and instead use the helper
218 std::vector
<dwarf2_per_cu_data
*> *imported_symtabs
= nullptr;
220 /* Return true of IMPORTED_SYMTABS is empty or not yet allocated. */
221 bool imported_symtabs_empty () const
223 return (imported_symtabs
== nullptr || imported_symtabs
->empty ());
226 /* Push P to the back of IMPORTED_SYMTABS, allocated IMPORTED_SYMTABS
227 first if required. */
228 void imported_symtabs_push (dwarf2_per_cu_data
*p
)
230 if (imported_symtabs
== nullptr)
231 imported_symtabs
= new std::vector
<dwarf2_per_cu_data
*>;
232 imported_symtabs
->push_back (p
);
235 /* Return the size of IMPORTED_SYMTABS if it is allocated, otherwise
237 size_t imported_symtabs_size () const
239 if (imported_symtabs
== nullptr)
241 return imported_symtabs
->size ();
244 /* Delete IMPORTED_SYMTABS and set the pointer back to nullptr. */
245 void imported_symtabs_free ()
247 delete imported_symtabs
;
248 imported_symtabs
= nullptr;
251 /* Get the header of this per_cu, reading it if necessary. */
252 const comp_unit_head
*get_header () const;
254 /* Return the address size given in the compilation unit header for
256 int addr_size () const;
258 /* Return the offset size given in the compilation unit header for
260 int offset_size () const;
262 /* Return the DW_FORM_ref_addr size given in the compilation unit
263 header for this CU. */
264 int ref_addr_size () const;
266 /* Return DWARF version number of this CU. */
267 short version () const
269 return dwarf_version
;
272 /* A type unit group has a per_cu object that is recognized by
273 having no section. */
274 bool type_unit_group_p () const
276 return section
== nullptr;
280 /* Entry in the signatured_types hash table. */
282 struct signatured_type
: public dwarf2_per_cu_data
284 signatured_type (ULONGEST signature
)
285 : signature (signature
)
288 /* The type's signature. */
291 /* Offset in the TU of the type's DIE, as read from the TU header.
292 If this TU is a DWO stub and the definition lives in a DWO file
293 (specified by DW_AT_GNU_dwo_name), this value is unusable. */
294 cu_offset type_offset_in_tu
{};
296 /* Offset in the section of the type's DIE.
297 If the definition lives in a DWO file, this is the offset in the
298 .debug_types.dwo section.
299 The value is zero until the actual value is known.
300 Zero is otherwise not a valid section offset. */
301 sect_offset type_offset_in_section
{};
303 /* Type units are grouped by their DW_AT_stmt_list entry so that they
304 can share them. This points to the containing symtab. */
305 struct type_unit_group
*type_unit_group
= nullptr;
307 /* Containing DWO unit.
308 This field is valid iff per_cu.reading_dwo_directly. */
309 struct dwo_unit
*dwo_unit
= nullptr;
312 using signatured_type_up
= std::unique_ptr
<signatured_type
>;
314 /* Some DWARF data can be shared across objfiles who share the same BFD,
315 this data is stored in this object.
317 Two dwarf2_per_objfile objects representing objfiles sharing the same BFD
318 will point to the same instance of dwarf2_per_bfd, unless the BFD requires
321 struct dwarf2_per_bfd
323 /* Construct a dwarf2_per_bfd for OBFD. NAMES points to the
324 dwarf2 section names, or is NULL if the standard ELF names are
325 used. CAN_COPY is true for formats where symbol
326 interposition is possible and so symbol values must follow copy
328 dwarf2_per_bfd (bfd
*obfd
, const dwarf2_debug_sections
*names
, bool can_copy
);
332 DISABLE_COPY_AND_ASSIGN (dwarf2_per_bfd
);
334 /* Return the CU given its index. */
335 dwarf2_per_cu_data
*get_cu (int index
) const
337 return this->all_comp_units
[index
].get ();
340 /* A convenience function to allocate a dwarf2_per_cu_data. The
341 returned object has its "index" field set properly. The object
342 is allocated on the dwarf2_per_bfd obstack. */
343 dwarf2_per_cu_data_up
allocate_per_cu ();
345 /* A convenience function to allocate a signatured_type. The
346 returned object has its "index" field set properly. The object
347 is allocated on the dwarf2_per_bfd obstack. */
348 signatured_type_up
allocate_signatured_type (ULONGEST signature
);
351 /* This function is mapped across the sections and remembers the
352 offset and size of each of the debugging sections we are
354 void locate_sections (bfd
*abfd
, asection
*sectp
,
355 const dwarf2_debug_sections
&names
);
358 /* The corresponding BFD. */
361 /* Objects that can be shared across objfiles are stored in this
362 obstack or on the psymtab obstack, while objects that are
363 objfile-specific are stored on the objfile obstack. */
364 auto_obstack obstack
;
366 dwarf2_section_info info
{};
367 dwarf2_section_info abbrev
{};
368 dwarf2_section_info line
{};
369 dwarf2_section_info loc
{};
370 dwarf2_section_info loclists
{};
371 dwarf2_section_info macinfo
{};
372 dwarf2_section_info macro
{};
373 dwarf2_section_info str
{};
374 dwarf2_section_info str_offsets
{};
375 dwarf2_section_info line_str
{};
376 dwarf2_section_info ranges
{};
377 dwarf2_section_info rnglists
{};
378 dwarf2_section_info addr
{};
379 dwarf2_section_info frame
{};
380 dwarf2_section_info eh_frame
{};
381 dwarf2_section_info gdb_index
{};
382 dwarf2_section_info debug_names
{};
383 dwarf2_section_info debug_aranges
{};
385 std::vector
<dwarf2_section_info
> types
;
387 /* Table of all the compilation units. This is used to locate
388 the target compilation unit of a particular reference. */
389 std::vector
<dwarf2_per_cu_data_up
> all_comp_units
;
391 /* Table of struct type_unit_group objects.
392 The hash key is the DW_AT_stmt_list value. */
393 htab_up type_unit_groups
;
395 /* A table mapping .debug_types signatures to its signatured_type entry.
396 This is NULL if the .debug_types section hasn't been read in yet. */
397 htab_up signatured_types
;
399 /* Type unit statistics, to see how well the scaling improvements
401 struct tu_stats tu_stats
{};
403 /* A table mapping DW_AT_dwo_name values to struct dwo_file objects.
404 This is NULL if the table hasn't been allocated yet. */
407 /* True if we've checked for whether there is a DWP file. */
408 bool dwp_checked
= false;
410 /* The DWP file if there is one, or NULL. */
411 std::unique_ptr
<struct dwp_file
> dwp_file
;
413 /* The shared '.dwz' file, if one exists. This is used when the
414 original data was compressed using 'dwz -m'. */
415 std::unique_ptr
<struct dwz_file
> dwz_file
;
417 /* Whether copy relocations are supported by this object format. */
420 /* A flag indicating whether this objfile has a section loaded at a
422 bool has_section_at_zero
= false;
424 /* True if we are using the mapped index,
425 or we are faking it for OBJF_READNOW's sake. */
426 bool using_index
= false;
428 /* The mapped index, or NULL if .gdb_index is missing or not being used. */
429 std::unique_ptr
<mapped_index
> index_table
;
431 /* The mapped index, or NULL if .debug_names is missing or not being used. */
432 std::unique_ptr
<mapped_debug_names
> debug_names_table
;
434 /* When using index_table, this keeps track of all quick_file_names entries.
435 TUs typically share line table entries with a CU, so we maintain a
436 separate table of all line table entries to support the sharing.
437 Note that while there can be way more TUs than CUs, we've already
438 sorted all the TUs into "type unit groups", grouped by their
439 DW_AT_stmt_list value. Therefore the only sharing done here is with a
440 CU and its associated TU group if there is one. */
441 htab_up quick_file_names_table
;
443 /* Set during partial symbol reading, to prevent queueing of full
445 bool reading_partial_symbols
= false;
447 /* The CUs we recently read. */
448 std::vector
<dwarf2_per_cu_data
*> just_read_cus
;
450 /* If we loaded the index from an external file, this contains the
451 resources associated to the open file, memory mapping, etc. */
452 std::unique_ptr
<index_cache_resource
> index_cache_res
;
454 /* Mapping from abstract origin DIE to concrete DIEs that reference it as
455 DW_AT_abstract_origin. */
456 std::unordered_map
<sect_offset
, std::vector
<sect_offset
>,
457 gdb::hash_enum
<sect_offset
>>
458 abstract_to_concrete
;
460 /* CUs that are queued to be read. */
461 gdb::optional
<std::queue
<dwarf2_queue_item
>> queue
;
463 /* We keep a separate reference to the partial symtabs, in case we
464 are sharing them between objfiles. This is only set after
465 partial symbols have been read the first time. */
466 std::shared_ptr
<psymtab_storage
> partial_symtabs
;
468 /* The address map that is used by the DWARF index code. */
469 struct addrmap
*index_addrmap
= nullptr;
472 /* This is the per-objfile data associated with a type_unit_group. */
474 struct type_unit_group_unshareable
476 /* The compunit symtab.
477 Type units in a group needn't all be defined in the same source file,
478 so we create an essentially anonymous symtab as the compunit symtab. */
479 struct compunit_symtab
*compunit_symtab
= nullptr;
481 /* The number of symtabs from the line header.
482 The value here must match line_header.num_file_names. */
483 unsigned int num_symtabs
= 0;
485 /* The symbol tables for this TU (obtained from the files listed in
487 WARNING: The order of entries here must match the order of entries
488 in the line header. After the first TU using this type_unit_group, the
489 line header for the subsequent TUs is recreated from this. This is done
490 because we need to use the same symtabs for each TU using the same
491 DW_AT_stmt_list value. Also note that symtabs may be repeated here,
492 there's no guarantee the line header doesn't have duplicate entries. */
493 struct symtab
**symtabs
= nullptr;
496 /* Collection of data recorded per objfile.
497 This hangs off of dwarf2_objfile_data_key.
499 Some DWARF data cannot (currently) be shared across objfiles. Such
500 data is stored in this object. */
502 struct dwarf2_per_objfile
504 dwarf2_per_objfile (struct objfile
*objfile
, dwarf2_per_bfd
*per_bfd
)
505 : objfile (objfile
), per_bfd (per_bfd
)
508 ~dwarf2_per_objfile ();
510 /* Return pointer to string at .debug_line_str offset as read from BUF.
511 BUF is assumed to be in a compilation unit described by CU_HEADER.
512 Return *BYTES_READ_PTR count of bytes read from BUF. */
513 const char *read_line_string (const gdb_byte
*buf
,
514 const struct comp_unit_head
*cu_header
,
515 unsigned int *bytes_read_ptr
);
517 /* Return true if the symtab corresponding to PER_CU has been set,
519 bool symtab_set_p (const dwarf2_per_cu_data
*per_cu
) const;
521 /* Return the compunit_symtab associated to PER_CU, if it has been created. */
522 compunit_symtab
*get_symtab (const dwarf2_per_cu_data
*per_cu
) const;
524 /* Set the compunit_symtab associated to PER_CU. */
525 void set_symtab (const dwarf2_per_cu_data
*per_cu
, compunit_symtab
*symtab
);
527 /* Get the type_unit_group_unshareable corresponding to TU_GROUP. If one
528 does not exist, create it. */
529 type_unit_group_unshareable
*get_type_unit_group_unshareable
530 (type_unit_group
*tu_group
);
532 struct type
*get_type_for_signatured_type (signatured_type
*sig_type
) const;
534 void set_type_for_signatured_type (signatured_type
*sig_type
,
537 /* Find an integer type SIZE_IN_BYTES bytes in size and return it.
538 UNSIGNED_P controls if the integer is unsigned or not. */
539 struct type
*int_type (int size_in_bytes
, bool unsigned_p
) const;
541 /* Get the dwarf2_cu matching PER_CU for this objfile. */
542 dwarf2_cu
*get_cu (dwarf2_per_cu_data
*per_cu
);
544 /* Set the dwarf2_cu matching PER_CU for this objfile. */
545 void set_cu (dwarf2_per_cu_data
*per_cu
, dwarf2_cu
*cu
);
547 /* Remove/free the dwarf2_cu matching PER_CU for this objfile. */
548 void remove_cu (dwarf2_per_cu_data
*per_cu
);
550 /* Free all cached compilation units. */
551 void remove_all_cus ();
553 /* Increase the age counter on each CU compilation unit and free
554 any that are too old. */
555 void age_comp_units ();
558 struct objfile
*objfile
;
560 /* Pointer to the data that is (possibly) shared between this objfile and
561 other objfiles backed by the same BFD. */
562 struct dwarf2_per_bfd
*per_bfd
;
564 /* Table mapping type DIEs to their struct type *.
565 This is nullptr if not allocated yet.
566 The mapping is done via (CU/TU + DIE offset) -> type. */
567 htab_up die_type_hash
;
569 /* Table containing line_header indexed by offset and offset_in_dwz. */
570 htab_up line_header_hash
;
572 /* The CU containing the m_builder in scope. */
573 dwarf2_cu
*sym_cu
= nullptr;
576 /* Hold the corresponding compunit_symtab for each CU or TU. This
577 is indexed by dwarf2_per_cu_data::index. A NULL value means
578 that the CU/TU has not been expanded yet. */
579 std::vector
<compunit_symtab
*> m_symtabs
;
581 /* Map from a type unit group to the corresponding unshared
583 typedef std::unique_ptr
<type_unit_group_unshareable
>
584 type_unit_group_unshareable_up
;
586 std::unordered_map
<type_unit_group
*, type_unit_group_unshareable_up
>
589 /* Map from signatured types to the corresponding struct type. */
590 std::unordered_map
<signatured_type
*, struct type
*> m_type_map
;
592 /* Map from the objfile-independent dwarf2_per_cu_data instances to the
593 corresponding objfile-dependent dwarf2_cu instances. */
594 std::unordered_map
<dwarf2_per_cu_data
*, dwarf2_cu
*> m_dwarf2_cus
;
597 /* Get the dwarf2_per_objfile associated to OBJFILE. */
599 dwarf2_per_objfile
*get_dwarf2_per_objfile (struct objfile
*objfile
);
601 /* A partial symtab specialized for DWARF. */
602 struct dwarf2_psymtab
: public partial_symtab
604 dwarf2_psymtab (const char *filename
,
605 psymtab_storage
*partial_symtabs
,
606 objfile_per_bfd_storage
*objfile_per_bfd
,
607 dwarf2_per_cu_data
*per_cu
)
608 : partial_symtab (filename
, partial_symtabs
, objfile_per_bfd
, 0),
613 void read_symtab (struct objfile
*) override
;
614 void expand_psymtab (struct objfile
*) override
;
615 bool readin_p (struct objfile
*) const override
;
616 compunit_symtab
*get_compunit_symtab (struct objfile
*) const override
;
618 struct dwarf2_per_cu_data
*per_cu_data
;
621 /* Return the type of the DIE at DIE_OFFSET in the CU named by
624 struct type
*dwarf2_get_die_type (cu_offset die_offset
,
625 dwarf2_per_cu_data
*per_cu
,
626 dwarf2_per_objfile
*per_objfile
);
628 /* Given an index in .debug_addr, fetch the value.
629 NOTE: This can be called during dwarf expression evaluation,
630 long after the debug information has been read, and thus per_cu->cu
631 may no longer exist. */
633 CORE_ADDR
dwarf2_read_addr_index (dwarf2_per_cu_data
*per_cu
,
634 dwarf2_per_objfile
*per_objfile
,
635 unsigned int addr_index
);
637 /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU.
638 Returned value is intended for DW_OP_call*. Returned
639 dwarf2_locexpr_baton->data has lifetime of
640 PER_CU->DWARF2_PER_OBJFILE->OBJFILE. */
642 struct dwarf2_locexpr_baton dwarf2_fetch_die_loc_sect_off
643 (sect_offset sect_off
, dwarf2_per_cu_data
*per_cu
,
644 dwarf2_per_objfile
*per_objfile
,
645 gdb::function_view
<CORE_ADDR ()> get_frame_pc
,
646 bool resolve_abstract_p
= false);
648 /* Like dwarf2_fetch_die_loc_sect_off, but take a CU
651 struct dwarf2_locexpr_baton dwarf2_fetch_die_loc_cu_off
652 (cu_offset offset_in_cu
, dwarf2_per_cu_data
*per_cu
,
653 dwarf2_per_objfile
*per_objfile
,
654 gdb::function_view
<CORE_ADDR ()> get_frame_pc
);
656 /* If the DIE at SECT_OFF in PER_CU has a DW_AT_const_value, return a
657 pointer to the constant bytes and set LEN to the length of the
658 data. If memory is needed, allocate it on OBSTACK. If the DIE
659 does not have a DW_AT_const_value, return NULL. */
661 extern const gdb_byte
*dwarf2_fetch_constant_bytes
662 (sect_offset sect_off
, dwarf2_per_cu_data
*per_cu
,
663 dwarf2_per_objfile
*per_objfile
, obstack
*obstack
,
666 /* Return the type of the die at SECT_OFF in PER_CU. Return NULL if no
667 valid type for this die is found. If VAR_NAME is non-null, and if
668 the DIE in question is a variable declaration (definitions are
669 excluded), then *VAR_NAME is set to the variable's name. */
671 struct type
*dwarf2_fetch_die_type_sect_off
672 (sect_offset sect_off
, dwarf2_per_cu_data
*per_cu
,
673 dwarf2_per_objfile
*per_objfile
,
674 const char **var_name
= nullptr);
676 /* When non-zero, dump line number entries as they are read in. */
677 extern unsigned int dwarf_line_debug
;
679 /* Dwarf2 sections that can be accessed by dwarf2_get_section_info. */
680 enum dwarf2_section_enum
{
685 extern void dwarf2_get_section_info (struct objfile
*,
686 enum dwarf2_section_enum
,
687 asection
**, const gdb_byte
**,
690 #endif /* DWARF2READ_H */