Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
6aba47ca | 3 | Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
7b6bb8da | 4 | 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
0fb0cc75 | 5 | Free Software Foundation, Inc. |
c906108c SS |
6 | |
7 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
8 | Inc. with support from Florida State University (under contract | |
9 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
10 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
11 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 12 | support. |
c906108c | 13 | |
c5aa993b | 14 | This file is part of GDB. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is free software; you can redistribute it and/or modify |
17 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
18 | the Free Software Foundation; either version 3 of the License, or |
19 | (at your option) any later version. | |
c906108c | 20 | |
a9762ec7 JB |
21 | This program is distributed in the hope that it will be useful, |
22 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | GNU General Public License for more details. | |
c906108c | 25 | |
c5aa993b | 26 | You should have received a copy of the GNU General Public License |
a9762ec7 | 27 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
28 | |
29 | #include "defs.h" | |
30 | #include "bfd.h" | |
c906108c SS |
31 | #include "symtab.h" |
32 | #include "gdbtypes.h" | |
c906108c | 33 | #include "objfiles.h" |
fa8f86ff | 34 | #include "dwarf2.h" |
c906108c SS |
35 | #include "buildsym.h" |
36 | #include "demangle.h" | |
37 | #include "expression.h" | |
d5166ae1 | 38 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 39 | #include "macrotab.h" |
c906108c SS |
40 | #include "language.h" |
41 | #include "complaints.h" | |
357e46e7 | 42 | #include "bcache.h" |
4c2df51b DJ |
43 | #include "dwarf2expr.h" |
44 | #include "dwarf2loc.h" | |
9219021c | 45 | #include "cp-support.h" |
72bf9492 | 46 | #include "hashtab.h" |
ae038cb0 DJ |
47 | #include "command.h" |
48 | #include "gdbcmd.h" | |
edb3359d | 49 | #include "block.h" |
ff013f42 | 50 | #include "addrmap.h" |
94af9270 KS |
51 | #include "typeprint.h" |
52 | #include "jv-lang.h" | |
ccefe4c4 | 53 | #include "psympriv.h" |
9291a0cd TT |
54 | #include "exceptions.h" |
55 | #include "gdb_stat.h" | |
96d19272 | 56 | #include "completer.h" |
34eaf542 | 57 | #include "vec.h" |
98bfdba5 PA |
58 | #include "c-lang.h" |
59 | #include "valprint.h" | |
60d5a603 | 60 | #include <ctype.h> |
4c2df51b | 61 | |
c906108c SS |
62 | #include <fcntl.h> |
63 | #include "gdb_string.h" | |
4bdf3d34 | 64 | #include "gdb_assert.h" |
c906108c | 65 | #include <sys/types.h> |
233a11ab CS |
66 | #ifdef HAVE_ZLIB_H |
67 | #include <zlib.h> | |
68 | #endif | |
dce234bc PP |
69 | #ifdef HAVE_MMAP |
70 | #include <sys/mman.h> | |
85d9bd0e TT |
71 | #ifndef MAP_FAILED |
72 | #define MAP_FAILED ((void *) -1) | |
73 | #endif | |
dce234bc | 74 | #endif |
d8151005 | 75 | |
34eaf542 TT |
76 | typedef struct symbol *symbolp; |
77 | DEF_VEC_P (symbolp); | |
78 | ||
107d2387 | 79 | #if 0 |
357e46e7 | 80 | /* .debug_info header for a compilation unit |
c906108c SS |
81 | Because of alignment constraints, this structure has padding and cannot |
82 | be mapped directly onto the beginning of the .debug_info section. */ | |
83 | typedef struct comp_unit_header | |
84 | { | |
85 | unsigned int length; /* length of the .debug_info | |
86 | contribution */ | |
87 | unsigned short version; /* version number -- 2 for DWARF | |
88 | version 2 */ | |
89 | unsigned int abbrev_offset; /* offset into .debug_abbrev section */ | |
90 | unsigned char addr_size; /* byte size of an address -- 4 */ | |
91 | } | |
92 | _COMP_UNIT_HEADER; | |
93 | #define _ACTUAL_COMP_UNIT_HEADER_SIZE 11 | |
107d2387 | 94 | #endif |
c906108c | 95 | |
c906108c SS |
96 | /* .debug_line statement program prologue |
97 | Because of alignment constraints, this structure has padding and cannot | |
98 | be mapped directly onto the beginning of the .debug_info section. */ | |
99 | typedef struct statement_prologue | |
100 | { | |
101 | unsigned int total_length; /* byte length of the statement | |
102 | information */ | |
103 | unsigned short version; /* version number -- 2 for DWARF | |
104 | version 2 */ | |
105 | unsigned int prologue_length; /* # bytes between prologue & | |
106 | stmt program */ | |
107 | unsigned char minimum_instruction_length; /* byte size of | |
108 | smallest instr */ | |
109 | unsigned char default_is_stmt; /* initial value of is_stmt | |
110 | register */ | |
111 | char line_base; | |
112 | unsigned char line_range; | |
113 | unsigned char opcode_base; /* number assigned to first special | |
114 | opcode */ | |
115 | unsigned char *standard_opcode_lengths; | |
116 | } | |
117 | _STATEMENT_PROLOGUE; | |
118 | ||
d97bc12b DE |
119 | /* When non-zero, dump DIEs after they are read in. */ |
120 | static int dwarf2_die_debug = 0; | |
121 | ||
dce234bc PP |
122 | static int pagesize; |
123 | ||
df8a16a1 DJ |
124 | /* When set, the file that we're processing is known to have debugging |
125 | info for C++ namespaces. GCC 3.3.x did not produce this information, | |
126 | but later versions do. */ | |
127 | ||
128 | static int processing_has_namespace_info; | |
129 | ||
6502dd73 DJ |
130 | static const struct objfile_data *dwarf2_objfile_data_key; |
131 | ||
dce234bc PP |
132 | struct dwarf2_section_info |
133 | { | |
134 | asection *asection; | |
135 | gdb_byte *buffer; | |
136 | bfd_size_type size; | |
137 | int was_mmapped; | |
be391dca TT |
138 | /* True if we have tried to read this section. */ |
139 | int readin; | |
dce234bc PP |
140 | }; |
141 | ||
9291a0cd TT |
142 | /* All offsets in the index are of this type. It must be |
143 | architecture-independent. */ | |
144 | typedef uint32_t offset_type; | |
145 | ||
146 | DEF_VEC_I (offset_type); | |
147 | ||
148 | /* A description of the mapped index. The file format is described in | |
149 | a comment by the code that writes the index. */ | |
150 | struct mapped_index | |
151 | { | |
559a7a62 JK |
152 | /* Index data format version. */ |
153 | int version; | |
154 | ||
9291a0cd TT |
155 | /* The total length of the buffer. */ |
156 | off_t total_size; | |
b11b1f88 | 157 | |
9291a0cd TT |
158 | /* A pointer to the address table data. */ |
159 | const gdb_byte *address_table; | |
b11b1f88 | 160 | |
9291a0cd TT |
161 | /* Size of the address table data in bytes. */ |
162 | offset_type address_table_size; | |
b11b1f88 | 163 | |
3876f04e DE |
164 | /* The symbol table, implemented as a hash table. */ |
165 | const offset_type *symbol_table; | |
b11b1f88 | 166 | |
9291a0cd | 167 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 168 | offset_type symbol_table_slots; |
b11b1f88 | 169 | |
9291a0cd TT |
170 | /* A pointer to the constant pool. */ |
171 | const char *constant_pool; | |
172 | }; | |
173 | ||
6502dd73 DJ |
174 | struct dwarf2_per_objfile |
175 | { | |
dce234bc PP |
176 | struct dwarf2_section_info info; |
177 | struct dwarf2_section_info abbrev; | |
178 | struct dwarf2_section_info line; | |
dce234bc PP |
179 | struct dwarf2_section_info loc; |
180 | struct dwarf2_section_info macinfo; | |
181 | struct dwarf2_section_info str; | |
182 | struct dwarf2_section_info ranges; | |
348e048f | 183 | struct dwarf2_section_info types; |
dce234bc PP |
184 | struct dwarf2_section_info frame; |
185 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 186 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 187 | |
be391dca TT |
188 | /* Back link. */ |
189 | struct objfile *objfile; | |
190 | ||
10b3939b DJ |
191 | /* A list of all the compilation units. This is used to locate |
192 | the target compilation unit of a particular reference. */ | |
ae038cb0 DJ |
193 | struct dwarf2_per_cu_data **all_comp_units; |
194 | ||
195 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
196 | int n_comp_units; | |
197 | ||
1fd400ff TT |
198 | /* The number of .debug_types-related CUs. */ |
199 | int n_type_comp_units; | |
200 | ||
201 | /* The .debug_types-related CUs. */ | |
202 | struct dwarf2_per_cu_data **type_comp_units; | |
203 | ||
ae038cb0 DJ |
204 | /* A chain of compilation units that are currently read in, so that |
205 | they can be freed later. */ | |
206 | struct dwarf2_per_cu_data *read_in_chain; | |
72dca2f5 | 207 | |
348e048f DE |
208 | /* A table mapping .debug_types signatures to its signatured_type entry. |
209 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
210 | htab_t signatured_types; | |
211 | ||
72dca2f5 FR |
212 | /* A flag indicating wether this objfile has a section loaded at a |
213 | VMA of 0. */ | |
214 | int has_section_at_zero; | |
9291a0cd | 215 | |
ae2de4f8 DE |
216 | /* True if we are using the mapped index, |
217 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
218 | unsigned char using_index; |
219 | ||
ae2de4f8 | 220 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 221 | struct mapped_index *index_table; |
98bfdba5 | 222 | |
7b9f3c50 DE |
223 | /* When using index_table, this keeps track of all quick_file_names entries. |
224 | TUs can share line table entries with CUs or other TUs, and there can be | |
225 | a lot more TUs than unique line tables, so we maintain a separate table | |
226 | of all line table entries to support the sharing. */ | |
227 | htab_t quick_file_names_table; | |
228 | ||
98bfdba5 PA |
229 | /* Set during partial symbol reading, to prevent queueing of full |
230 | symbols. */ | |
231 | int reading_partial_symbols; | |
673bfd45 DE |
232 | |
233 | /* Table mapping type .debug_info DIE offsets to types. | |
234 | This is NULL if not allocated yet. | |
235 | It (currently) makes sense to allocate debug_types_type_hash lazily. | |
236 | To keep things simple we allocate both lazily. */ | |
237 | htab_t debug_info_type_hash; | |
238 | ||
239 | /* Table mapping type .debug_types DIE offsets to types. | |
240 | This is NULL if not allocated yet. */ | |
241 | htab_t debug_types_type_hash; | |
6502dd73 DJ |
242 | }; |
243 | ||
244 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c SS |
245 | |
246 | /* names of the debugging sections */ | |
247 | ||
233a11ab CS |
248 | /* Note that if the debugging section has been compressed, it might |
249 | have a name like .zdebug_info. */ | |
250 | ||
251 | #define INFO_SECTION "debug_info" | |
252 | #define ABBREV_SECTION "debug_abbrev" | |
253 | #define LINE_SECTION "debug_line" | |
233a11ab CS |
254 | #define LOC_SECTION "debug_loc" |
255 | #define MACINFO_SECTION "debug_macinfo" | |
256 | #define STR_SECTION "debug_str" | |
257 | #define RANGES_SECTION "debug_ranges" | |
348e048f | 258 | #define TYPES_SECTION "debug_types" |
233a11ab CS |
259 | #define FRAME_SECTION "debug_frame" |
260 | #define EH_FRAME_SECTION "eh_frame" | |
9291a0cd | 261 | #define GDB_INDEX_SECTION "gdb_index" |
c906108c SS |
262 | |
263 | /* local data types */ | |
264 | ||
0963b4bd | 265 | /* We hold several abbreviation tables in memory at the same time. */ |
57349743 JB |
266 | #ifndef ABBREV_HASH_SIZE |
267 | #define ABBREV_HASH_SIZE 121 | |
268 | #endif | |
269 | ||
107d2387 AC |
270 | /* The data in a compilation unit header, after target2host |
271 | translation, looks like this. */ | |
c906108c | 272 | struct comp_unit_head |
a738430d | 273 | { |
c764a876 | 274 | unsigned int length; |
a738430d | 275 | short version; |
a738430d MK |
276 | unsigned char addr_size; |
277 | unsigned char signed_addr_p; | |
9cbfa09e | 278 | unsigned int abbrev_offset; |
57349743 | 279 | |
a738430d MK |
280 | /* Size of file offsets; either 4 or 8. */ |
281 | unsigned int offset_size; | |
57349743 | 282 | |
a738430d MK |
283 | /* Size of the length field; either 4 or 12. */ |
284 | unsigned int initial_length_size; | |
57349743 | 285 | |
a738430d MK |
286 | /* Offset to the first byte of this compilation unit header in the |
287 | .debug_info section, for resolving relative reference dies. */ | |
288 | unsigned int offset; | |
57349743 | 289 | |
d00adf39 DE |
290 | /* Offset to first die in this cu from the start of the cu. |
291 | This will be the first byte following the compilation unit header. */ | |
292 | unsigned int first_die_offset; | |
a738430d | 293 | }; |
c906108c | 294 | |
3da10d80 KS |
295 | /* Type used for delaying computation of method physnames. |
296 | See comments for compute_delayed_physnames. */ | |
297 | struct delayed_method_info | |
298 | { | |
299 | /* The type to which the method is attached, i.e., its parent class. */ | |
300 | struct type *type; | |
301 | ||
302 | /* The index of the method in the type's function fieldlists. */ | |
303 | int fnfield_index; | |
304 | ||
305 | /* The index of the method in the fieldlist. */ | |
306 | int index; | |
307 | ||
308 | /* The name of the DIE. */ | |
309 | const char *name; | |
310 | ||
311 | /* The DIE associated with this method. */ | |
312 | struct die_info *die; | |
313 | }; | |
314 | ||
315 | typedef struct delayed_method_info delayed_method_info; | |
316 | DEF_VEC_O (delayed_method_info); | |
317 | ||
e7c27a73 DJ |
318 | /* Internal state when decoding a particular compilation unit. */ |
319 | struct dwarf2_cu | |
320 | { | |
321 | /* The objfile containing this compilation unit. */ | |
322 | struct objfile *objfile; | |
323 | ||
d00adf39 | 324 | /* The header of the compilation unit. */ |
e7c27a73 | 325 | struct comp_unit_head header; |
e142c38c | 326 | |
d00adf39 DE |
327 | /* Base address of this compilation unit. */ |
328 | CORE_ADDR base_address; | |
329 | ||
330 | /* Non-zero if base_address has been set. */ | |
331 | int base_known; | |
332 | ||
e142c38c DJ |
333 | struct function_range *first_fn, *last_fn, *cached_fn; |
334 | ||
335 | /* The language we are debugging. */ | |
336 | enum language language; | |
337 | const struct language_defn *language_defn; | |
338 | ||
b0f35d58 DL |
339 | const char *producer; |
340 | ||
e142c38c DJ |
341 | /* The generic symbol table building routines have separate lists for |
342 | file scope symbols and all all other scopes (local scopes). So | |
343 | we need to select the right one to pass to add_symbol_to_list(). | |
344 | We do it by keeping a pointer to the correct list in list_in_scope. | |
345 | ||
346 | FIXME: The original dwarf code just treated the file scope as the | |
347 | first local scope, and all other local scopes as nested local | |
348 | scopes, and worked fine. Check to see if we really need to | |
349 | distinguish these in buildsym.c. */ | |
350 | struct pending **list_in_scope; | |
351 | ||
f3dd6933 DJ |
352 | /* DWARF abbreviation table associated with this compilation unit. */ |
353 | struct abbrev_info **dwarf2_abbrevs; | |
354 | ||
355 | /* Storage for the abbrev table. */ | |
356 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
357 | |
358 | /* Hash table holding all the loaded partial DIEs. */ | |
359 | htab_t partial_dies; | |
360 | ||
361 | /* Storage for things with the same lifetime as this read-in compilation | |
362 | unit, including partial DIEs. */ | |
363 | struct obstack comp_unit_obstack; | |
364 | ||
ae038cb0 DJ |
365 | /* When multiple dwarf2_cu structures are living in memory, this field |
366 | chains them all together, so that they can be released efficiently. | |
367 | We will probably also want a generation counter so that most-recently-used | |
368 | compilation units are cached... */ | |
369 | struct dwarf2_per_cu_data *read_in_chain; | |
370 | ||
371 | /* Backchain to our per_cu entry if the tree has been built. */ | |
372 | struct dwarf2_per_cu_data *per_cu; | |
373 | ||
374 | /* How many compilation units ago was this CU last referenced? */ | |
375 | int last_used; | |
376 | ||
10b3939b | 377 | /* A hash table of die offsets for following references. */ |
51545339 | 378 | htab_t die_hash; |
10b3939b DJ |
379 | |
380 | /* Full DIEs if read in. */ | |
381 | struct die_info *dies; | |
382 | ||
383 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
384 | units referenced by this one. Only set during full symbol processing; | |
385 | partial symbol tables do not have dependencies. */ | |
386 | htab_t dependencies; | |
387 | ||
cb1df416 DJ |
388 | /* Header data from the line table, during full symbol processing. */ |
389 | struct line_header *line_header; | |
390 | ||
3da10d80 KS |
391 | /* A list of methods which need to have physnames computed |
392 | after all type information has been read. */ | |
393 | VEC (delayed_method_info) *method_list; | |
394 | ||
ae038cb0 DJ |
395 | /* Mark used when releasing cached dies. */ |
396 | unsigned int mark : 1; | |
397 | ||
398 | /* This flag will be set if this compilation unit might include | |
399 | inter-compilation-unit references. */ | |
400 | unsigned int has_form_ref_addr : 1; | |
401 | ||
72bf9492 DJ |
402 | /* This flag will be set if this compilation unit includes any |
403 | DW_TAG_namespace DIEs. If we know that there are explicit | |
404 | DIEs for namespaces, we don't need to try to infer them | |
405 | from mangled names. */ | |
406 | unsigned int has_namespace_info : 1; | |
e7c27a73 DJ |
407 | }; |
408 | ||
10b3939b DJ |
409 | /* Persistent data held for a compilation unit, even when not |
410 | processing it. We put a pointer to this structure in the | |
411 | read_symtab_private field of the psymtab. If we encounter | |
412 | inter-compilation-unit references, we also maintain a sorted | |
413 | list of all compilation units. */ | |
414 | ||
ae038cb0 DJ |
415 | struct dwarf2_per_cu_data |
416 | { | |
348e048f | 417 | /* The start offset and length of this compilation unit. 2**29-1 |
ae038cb0 | 418 | bytes should suffice to store the length of any compilation unit |
45452591 DE |
419 | - if it doesn't, GDB will fall over anyway. |
420 | NOTE: Unlike comp_unit_head.length, this length includes | |
421 | initial_length_size. */ | |
c764a876 | 422 | unsigned int offset; |
348e048f | 423 | unsigned int length : 29; |
ae038cb0 DJ |
424 | |
425 | /* Flag indicating this compilation unit will be read in before | |
426 | any of the current compilation units are processed. */ | |
c764a876 | 427 | unsigned int queued : 1; |
ae038cb0 | 428 | |
5afb4e99 DJ |
429 | /* This flag will be set if we need to load absolutely all DIEs |
430 | for this compilation unit, instead of just the ones we think | |
431 | are interesting. It gets set if we look for a DIE in the | |
432 | hash table and don't find it. */ | |
433 | unsigned int load_all_dies : 1; | |
434 | ||
348e048f DE |
435 | /* Non-zero if this CU is from .debug_types. |
436 | Otherwise it's from .debug_info. */ | |
437 | unsigned int from_debug_types : 1; | |
438 | ||
17ea53c3 JK |
439 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
440 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 441 | struct dwarf2_cu *cu; |
1c379e20 | 442 | |
9291a0cd TT |
443 | /* The corresponding objfile. */ |
444 | struct objfile *objfile; | |
445 | ||
446 | /* When using partial symbol tables, the 'psymtab' field is active. | |
447 | Otherwise the 'quick' field is active. */ | |
448 | union | |
449 | { | |
450 | /* The partial symbol table associated with this compilation unit, | |
451 | or NULL for partial units (which do not have an associated | |
452 | symtab). */ | |
453 | struct partial_symtab *psymtab; | |
454 | ||
455 | /* Data needed by the "quick" functions. */ | |
456 | struct dwarf2_per_cu_quick_data *quick; | |
457 | } v; | |
ae038cb0 DJ |
458 | }; |
459 | ||
348e048f DE |
460 | /* Entry in the signatured_types hash table. */ |
461 | ||
462 | struct signatured_type | |
463 | { | |
464 | ULONGEST signature; | |
465 | ||
466 | /* Offset in .debug_types of the TU (type_unit) for this type. */ | |
467 | unsigned int offset; | |
468 | ||
469 | /* Offset in .debug_types of the type defined by this TU. */ | |
470 | unsigned int type_offset; | |
471 | ||
472 | /* The CU(/TU) of this type. */ | |
473 | struct dwarf2_per_cu_data per_cu; | |
474 | }; | |
475 | ||
0963b4bd MS |
476 | /* Struct used to pass misc. parameters to read_die_and_children, et |
477 | al. which are used for both .debug_info and .debug_types dies. | |
478 | All parameters here are unchanging for the life of the call. This | |
479 | struct exists to abstract away the constant parameters of die | |
480 | reading. */ | |
93311388 DE |
481 | |
482 | struct die_reader_specs | |
483 | { | |
484 | /* The bfd of this objfile. */ | |
485 | bfd* abfd; | |
486 | ||
487 | /* The CU of the DIE we are parsing. */ | |
488 | struct dwarf2_cu *cu; | |
489 | ||
490 | /* Pointer to start of section buffer. | |
491 | This is either the start of .debug_info or .debug_types. */ | |
492 | const gdb_byte *buffer; | |
493 | }; | |
494 | ||
debd256d JB |
495 | /* The line number information for a compilation unit (found in the |
496 | .debug_line section) begins with a "statement program header", | |
497 | which contains the following information. */ | |
498 | struct line_header | |
499 | { | |
500 | unsigned int total_length; | |
501 | unsigned short version; | |
502 | unsigned int header_length; | |
503 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 504 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
505 | unsigned char default_is_stmt; |
506 | int line_base; | |
507 | unsigned char line_range; | |
508 | unsigned char opcode_base; | |
509 | ||
510 | /* standard_opcode_lengths[i] is the number of operands for the | |
511 | standard opcode whose value is i. This means that | |
512 | standard_opcode_lengths[0] is unused, and the last meaningful | |
513 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
514 | unsigned char *standard_opcode_lengths; | |
515 | ||
516 | /* The include_directories table. NOTE! These strings are not | |
517 | allocated with xmalloc; instead, they are pointers into | |
518 | debug_line_buffer. If you try to free them, `free' will get | |
519 | indigestion. */ | |
520 | unsigned int num_include_dirs, include_dirs_size; | |
521 | char **include_dirs; | |
522 | ||
523 | /* The file_names table. NOTE! These strings are not allocated | |
524 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
525 | Don't try to free them directly. */ | |
526 | unsigned int num_file_names, file_names_size; | |
527 | struct file_entry | |
c906108c | 528 | { |
debd256d JB |
529 | char *name; |
530 | unsigned int dir_index; | |
531 | unsigned int mod_time; | |
532 | unsigned int length; | |
aaa75496 | 533 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 534 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
535 | } *file_names; |
536 | ||
537 | /* The start and end of the statement program following this | |
6502dd73 | 538 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 539 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 540 | }; |
c906108c SS |
541 | |
542 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 543 | need this much information. */ |
c906108c SS |
544 | struct partial_die_info |
545 | { | |
72bf9492 | 546 | /* Offset of this DIE. */ |
c906108c | 547 | unsigned int offset; |
72bf9492 DJ |
548 | |
549 | /* DWARF-2 tag for this DIE. */ | |
550 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
551 | ||
72bf9492 DJ |
552 | /* Assorted flags describing the data found in this DIE. */ |
553 | unsigned int has_children : 1; | |
554 | unsigned int is_external : 1; | |
555 | unsigned int is_declaration : 1; | |
556 | unsigned int has_type : 1; | |
557 | unsigned int has_specification : 1; | |
558 | unsigned int has_pc_info : 1; | |
559 | ||
560 | /* Flag set if the SCOPE field of this structure has been | |
561 | computed. */ | |
562 | unsigned int scope_set : 1; | |
563 | ||
fa4028e9 JB |
564 | /* Flag set if the DIE has a byte_size attribute. */ |
565 | unsigned int has_byte_size : 1; | |
566 | ||
98bfdba5 PA |
567 | /* Flag set if any of the DIE's children are template arguments. */ |
568 | unsigned int has_template_arguments : 1; | |
569 | ||
abc72ce4 DE |
570 | /* Flag set if fixup_partial_die has been called on this die. */ |
571 | unsigned int fixup_called : 1; | |
572 | ||
72bf9492 | 573 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 574 | sometimes a default name for unnamed DIEs. */ |
c906108c | 575 | char *name; |
72bf9492 | 576 | |
abc72ce4 DE |
577 | /* The linkage name, if present. */ |
578 | const char *linkage_name; | |
579 | ||
72bf9492 DJ |
580 | /* The scope to prepend to our children. This is generally |
581 | allocated on the comp_unit_obstack, so will disappear | |
582 | when this compilation unit leaves the cache. */ | |
583 | char *scope; | |
584 | ||
585 | /* The location description associated with this DIE, if any. */ | |
586 | struct dwarf_block *locdesc; | |
587 | ||
588 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
589 | CORE_ADDR lowpc; |
590 | CORE_ADDR highpc; | |
72bf9492 | 591 | |
93311388 | 592 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 593 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
594 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
595 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
fe1b8b76 | 596 | gdb_byte *sibling; |
72bf9492 DJ |
597 | |
598 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
599 | DW_AT_specification (or DW_AT_abstract_origin or | |
600 | DW_AT_extension). */ | |
601 | unsigned int spec_offset; | |
602 | ||
603 | /* Pointers to this DIE's parent, first child, and next sibling, | |
604 | if any. */ | |
605 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
606 | }; |
607 | ||
0963b4bd | 608 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
609 | struct abbrev_info |
610 | { | |
611 | unsigned int number; /* number identifying abbrev */ | |
612 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
613 | unsigned short has_children; /* boolean */ |
614 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
615 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
616 | struct abbrev_info *next; /* next in chain */ | |
617 | }; | |
618 | ||
619 | struct attr_abbrev | |
620 | { | |
9d25dd43 DE |
621 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
622 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
623 | }; |
624 | ||
0963b4bd | 625 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
626 | struct attribute |
627 | { | |
9d25dd43 | 628 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
629 | ENUM_BITFIELD(dwarf_form) form : 15; |
630 | ||
631 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
632 | field should be in u.str (existing only for DW_STRING) but it is kept | |
633 | here for better struct attribute alignment. */ | |
634 | unsigned int string_is_canonical : 1; | |
635 | ||
b60c80d6 DJ |
636 | union |
637 | { | |
638 | char *str; | |
639 | struct dwarf_block *blk; | |
43bbcdc2 PH |
640 | ULONGEST unsnd; |
641 | LONGEST snd; | |
b60c80d6 | 642 | CORE_ADDR addr; |
348e048f | 643 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
644 | } |
645 | u; | |
646 | }; | |
647 | ||
0963b4bd | 648 | /* This data structure holds a complete die structure. */ |
c906108c SS |
649 | struct die_info |
650 | { | |
76815b17 DE |
651 | /* DWARF-2 tag for this DIE. */ |
652 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
653 | ||
654 | /* Number of attributes */ | |
98bfdba5 PA |
655 | unsigned char num_attrs; |
656 | ||
657 | /* True if we're presently building the full type name for the | |
658 | type derived from this DIE. */ | |
659 | unsigned char building_fullname : 1; | |
76815b17 DE |
660 | |
661 | /* Abbrev number */ | |
662 | unsigned int abbrev; | |
663 | ||
93311388 | 664 | /* Offset in .debug_info or .debug_types section. */ |
76815b17 | 665 | unsigned int offset; |
78ba4af6 JB |
666 | |
667 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
668 | points to this die's parent; CHILD points to the first child of | |
669 | this node; and all the children of a given node are chained | |
4950bc1c | 670 | together via their SIBLING fields. */ |
639d11d3 DC |
671 | struct die_info *child; /* Its first child, if any. */ |
672 | struct die_info *sibling; /* Its next sibling, if any. */ | |
673 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 674 | |
b60c80d6 DJ |
675 | /* An array of attributes, with NUM_ATTRS elements. There may be |
676 | zero, but it's not common and zero-sized arrays are not | |
677 | sufficiently portable C. */ | |
678 | struct attribute attrs[1]; | |
c906108c SS |
679 | }; |
680 | ||
5fb290d7 DJ |
681 | struct function_range |
682 | { | |
683 | const char *name; | |
684 | CORE_ADDR lowpc, highpc; | |
685 | int seen_line; | |
686 | struct function_range *next; | |
687 | }; | |
688 | ||
0963b4bd | 689 | /* Get at parts of an attribute structure. */ |
c906108c SS |
690 | |
691 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 692 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
693 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
694 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
695 | #define DW_SND(attr) ((attr)->u.snd) | |
696 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 697 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c | 698 | |
0963b4bd | 699 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
700 | struct dwarf_block |
701 | { | |
702 | unsigned int size; | |
fe1b8b76 | 703 | gdb_byte *data; |
c906108c SS |
704 | }; |
705 | ||
c906108c SS |
706 | #ifndef ATTR_ALLOC_CHUNK |
707 | #define ATTR_ALLOC_CHUNK 4 | |
708 | #endif | |
709 | ||
c906108c SS |
710 | /* Allocate fields for structs, unions and enums in this size. */ |
711 | #ifndef DW_FIELD_ALLOC_CHUNK | |
712 | #define DW_FIELD_ALLOC_CHUNK 4 | |
713 | #endif | |
714 | ||
c906108c SS |
715 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
716 | but this would require a corresponding change in unpack_field_as_long | |
717 | and friends. */ | |
718 | static int bits_per_byte = 8; | |
719 | ||
720 | /* The routines that read and process dies for a C struct or C++ class | |
721 | pass lists of data member fields and lists of member function fields | |
722 | in an instance of a field_info structure, as defined below. */ | |
723 | struct field_info | |
c5aa993b | 724 | { |
0963b4bd | 725 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
726 | struct nextfield |
727 | { | |
728 | struct nextfield *next; | |
729 | int accessibility; | |
730 | int virtuality; | |
731 | struct field field; | |
732 | } | |
7d0ccb61 | 733 | *fields, *baseclasses; |
c906108c | 734 | |
7d0ccb61 | 735 | /* Number of fields (including baseclasses). */ |
c5aa993b | 736 | int nfields; |
c906108c | 737 | |
c5aa993b JM |
738 | /* Number of baseclasses. */ |
739 | int nbaseclasses; | |
c906108c | 740 | |
c5aa993b JM |
741 | /* Set if the accesibility of one of the fields is not public. */ |
742 | int non_public_fields; | |
c906108c | 743 | |
c5aa993b JM |
744 | /* Member function fields array, entries are allocated in the order they |
745 | are encountered in the object file. */ | |
746 | struct nextfnfield | |
747 | { | |
748 | struct nextfnfield *next; | |
749 | struct fn_field fnfield; | |
750 | } | |
751 | *fnfields; | |
c906108c | 752 | |
c5aa993b JM |
753 | /* Member function fieldlist array, contains name of possibly overloaded |
754 | member function, number of overloaded member functions and a pointer | |
755 | to the head of the member function field chain. */ | |
756 | struct fnfieldlist | |
757 | { | |
758 | char *name; | |
759 | int length; | |
760 | struct nextfnfield *head; | |
761 | } | |
762 | *fnfieldlists; | |
c906108c | 763 | |
c5aa993b JM |
764 | /* Number of entries in the fnfieldlists array. */ |
765 | int nfnfields; | |
98751a41 JK |
766 | |
767 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
768 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
769 | struct typedef_field_list | |
770 | { | |
771 | struct typedef_field field; | |
772 | struct typedef_field_list *next; | |
773 | } | |
774 | *typedef_field_list; | |
775 | unsigned typedef_field_list_count; | |
c5aa993b | 776 | }; |
c906108c | 777 | |
10b3939b DJ |
778 | /* One item on the queue of compilation units to read in full symbols |
779 | for. */ | |
780 | struct dwarf2_queue_item | |
781 | { | |
782 | struct dwarf2_per_cu_data *per_cu; | |
783 | struct dwarf2_queue_item *next; | |
784 | }; | |
785 | ||
786 | /* The current queue. */ | |
787 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
788 | ||
ae038cb0 DJ |
789 | /* Loaded secondary compilation units are kept in memory until they |
790 | have not been referenced for the processing of this many | |
791 | compilation units. Set this to zero to disable caching. Cache | |
792 | sizes of up to at least twenty will improve startup time for | |
793 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
794 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
795 | static void |
796 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
797 | struct cmd_list_element *c, const char *value) | |
798 | { | |
3e43a32a MS |
799 | fprintf_filtered (file, _("The upper bound on the age of cached " |
800 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
801 | value); |
802 | } | |
803 | ||
ae038cb0 | 804 | |
0963b4bd | 805 | /* Various complaints about symbol reading that don't abort the process. */ |
c906108c | 806 | |
4d3c2250 KB |
807 | static void |
808 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 809 | { |
4d3c2250 | 810 | complaint (&symfile_complaints, |
e2e0b3e5 | 811 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
812 | } |
813 | ||
25e43795 DJ |
814 | static void |
815 | dwarf2_debug_line_missing_file_complaint (void) | |
816 | { | |
817 | complaint (&symfile_complaints, | |
818 | _(".debug_line section has line data without a file")); | |
819 | } | |
820 | ||
59205f5a JB |
821 | static void |
822 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
823 | { | |
824 | complaint (&symfile_complaints, | |
3e43a32a MS |
825 | _(".debug_line section has line " |
826 | "program sequence without an end")); | |
59205f5a JB |
827 | } |
828 | ||
4d3c2250 KB |
829 | static void |
830 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 831 | { |
e2e0b3e5 | 832 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
833 | } |
834 | ||
4d3c2250 KB |
835 | static void |
836 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
837 | int arg3) | |
2e276125 | 838 | { |
4d3c2250 | 839 | complaint (&symfile_complaints, |
3e43a32a MS |
840 | _("const value length mismatch for '%s', got %d, expected %d"), |
841 | arg1, arg2, arg3); | |
4d3c2250 KB |
842 | } |
843 | ||
844 | static void | |
845 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 846 | { |
4d3c2250 | 847 | complaint (&symfile_complaints, |
e2e0b3e5 | 848 | _("macro info runs off end of `.debug_macinfo' section")); |
4d3c2250 KB |
849 | } |
850 | ||
851 | static void | |
852 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 853 | { |
4d3c2250 | 854 | complaint (&symfile_complaints, |
3e43a32a MS |
855 | _("macro debug info contains a " |
856 | "malformed macro definition:\n`%s'"), | |
4d3c2250 KB |
857 | arg1); |
858 | } | |
859 | ||
860 | static void | |
861 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 862 | { |
4d3c2250 | 863 | complaint (&symfile_complaints, |
3e43a32a MS |
864 | _("invalid attribute class or form for '%s' in '%s'"), |
865 | arg1, arg2); | |
4d3c2250 | 866 | } |
c906108c | 867 | |
c906108c SS |
868 | /* local function prototypes */ |
869 | ||
4efb68b1 | 870 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 871 | |
aaa75496 JB |
872 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
873 | struct objfile *); | |
874 | ||
c67a9c90 | 875 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 876 | |
72bf9492 DJ |
877 | static void scan_partial_symbols (struct partial_die_info *, |
878 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 879 | int, struct dwarf2_cu *); |
c906108c | 880 | |
72bf9492 DJ |
881 | static void add_partial_symbol (struct partial_die_info *, |
882 | struct dwarf2_cu *); | |
63d06c5c | 883 | |
72bf9492 DJ |
884 | static void add_partial_namespace (struct partial_die_info *pdi, |
885 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 886 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 887 | |
5d7cb8df JK |
888 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
889 | CORE_ADDR *highpc, int need_pc, | |
890 | struct dwarf2_cu *cu); | |
891 | ||
72bf9492 DJ |
892 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
893 | struct dwarf2_cu *cu); | |
91c24f0a | 894 | |
bc30ff58 JB |
895 | static void add_partial_subprogram (struct partial_die_info *pdi, |
896 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 897 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 898 | |
fe1b8b76 | 899 | static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi, |
93311388 DE |
900 | gdb_byte *buffer, gdb_byte *info_ptr, |
901 | bfd *abfd, struct dwarf2_cu *cu); | |
91c24f0a | 902 | |
a14ed312 | 903 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 904 | |
a14ed312 | 905 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 906 | |
e7c27a73 | 907 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 908 | |
f3dd6933 | 909 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 910 | |
fe1b8b76 | 911 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 912 | struct dwarf2_cu *); |
72bf9492 | 913 | |
57349743 | 914 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 915 | struct dwarf2_cu *); |
c906108c | 916 | |
93311388 DE |
917 | static struct partial_die_info *load_partial_dies (bfd *, |
918 | gdb_byte *, gdb_byte *, | |
919 | int, struct dwarf2_cu *); | |
72bf9492 | 920 | |
fe1b8b76 | 921 | static gdb_byte *read_partial_die (struct partial_die_info *, |
93311388 DE |
922 | struct abbrev_info *abbrev, |
923 | unsigned int, bfd *, | |
924 | gdb_byte *, gdb_byte *, | |
925 | struct dwarf2_cu *); | |
c906108c | 926 | |
c764a876 | 927 | static struct partial_die_info *find_partial_die (unsigned int, |
10b3939b | 928 | struct dwarf2_cu *); |
72bf9492 DJ |
929 | |
930 | static void fixup_partial_die (struct partial_die_info *, | |
931 | struct dwarf2_cu *); | |
932 | ||
fe1b8b76 JB |
933 | static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *, |
934 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 935 | |
fe1b8b76 JB |
936 | static gdb_byte *read_attribute_value (struct attribute *, unsigned, |
937 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
a8329558 | 938 | |
fe1b8b76 | 939 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 940 | |
fe1b8b76 | 941 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 942 | |
fe1b8b76 | 943 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 944 | |
fe1b8b76 | 945 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 946 | |
93311388 | 947 | static ULONGEST read_8_bytes (bfd *, gdb_byte *); |
c906108c | 948 | |
fe1b8b76 | 949 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 950 | unsigned int *); |
c906108c | 951 | |
c764a876 DE |
952 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
953 | ||
954 | static LONGEST read_checked_initial_length_and_offset | |
955 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
956 | unsigned int *, unsigned int *); | |
613e1657 | 957 | |
fe1b8b76 | 958 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
959 | unsigned int *); |
960 | ||
961 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 962 | |
fe1b8b76 | 963 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 964 | |
9b1c24c8 | 965 | static char *read_direct_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 966 | |
fe1b8b76 JB |
967 | static char *read_indirect_string (bfd *, gdb_byte *, |
968 | const struct comp_unit_head *, | |
969 | unsigned int *); | |
4bdf3d34 | 970 | |
fe1b8b76 | 971 | static unsigned long read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 972 | |
fe1b8b76 | 973 | static long read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 974 | |
fe1b8b76 | 975 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 976 | |
e142c38c | 977 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 978 | |
e142c38c DJ |
979 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
980 | struct dwarf2_cu *); | |
c906108c | 981 | |
348e048f DE |
982 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
983 | unsigned int, | |
984 | struct dwarf2_cu *); | |
985 | ||
05cf31d1 JB |
986 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
987 | struct dwarf2_cu *cu); | |
988 | ||
e142c38c | 989 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 990 | |
e142c38c | 991 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 992 | struct dwarf2_cu **); |
63d06c5c | 993 | |
debd256d JB |
994 | static void free_line_header (struct line_header *lh); |
995 | ||
aaa75496 JB |
996 | static void add_file_name (struct line_header *, char *, unsigned int, |
997 | unsigned int, unsigned int); | |
998 | ||
debd256d JB |
999 | static struct line_header *(dwarf_decode_line_header |
1000 | (unsigned int offset, | |
e7c27a73 | 1001 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d | 1002 | |
72b9f47f | 1003 | static void dwarf_decode_lines (struct line_header *, const char *, bfd *, |
aaa75496 | 1004 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 1005 | |
72b9f47f | 1006 | static void dwarf2_start_subfile (char *, const char *, const char *); |
c906108c | 1007 | |
a14ed312 | 1008 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1009 | struct dwarf2_cu *); |
c906108c | 1010 | |
34eaf542 TT |
1011 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1012 | struct dwarf2_cu *, struct symbol *); | |
1013 | ||
a14ed312 | 1014 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 1015 | struct dwarf2_cu *); |
c906108c | 1016 | |
98bfdba5 PA |
1017 | static void dwarf2_const_value_attr (struct attribute *attr, |
1018 | struct type *type, | |
1019 | const char *name, | |
1020 | struct obstack *obstack, | |
1021 | struct dwarf2_cu *cu, long *value, | |
1022 | gdb_byte **bytes, | |
1023 | struct dwarf2_locexpr_baton **baton); | |
2df3850c | 1024 | |
e7c27a73 | 1025 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1026 | |
b4ba55a1 JB |
1027 | static int need_gnat_info (struct dwarf2_cu *); |
1028 | ||
3e43a32a MS |
1029 | static struct type *die_descriptive_type (struct die_info *, |
1030 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1031 | |
1032 | static void set_descriptive_type (struct type *, struct die_info *, | |
1033 | struct dwarf2_cu *); | |
1034 | ||
e7c27a73 DJ |
1035 | static struct type *die_containing_type (struct die_info *, |
1036 | struct dwarf2_cu *); | |
c906108c | 1037 | |
673bfd45 DE |
1038 | static struct type *lookup_die_type (struct die_info *, struct attribute *, |
1039 | struct dwarf2_cu *); | |
c906108c | 1040 | |
f792889a | 1041 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1042 | |
673bfd45 DE |
1043 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1044 | ||
086ed43d | 1045 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1046 | |
6e70227d | 1047 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1048 | const char *suffix, int physname, |
1049 | struct dwarf2_cu *cu); | |
63d06c5c | 1050 | |
e7c27a73 | 1051 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1052 | |
348e048f DE |
1053 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1054 | ||
e7c27a73 | 1055 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1056 | |
e7c27a73 | 1057 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1058 | |
ff013f42 JK |
1059 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1060 | struct dwarf2_cu *, struct partial_symtab *); | |
1061 | ||
a14ed312 | 1062 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1063 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1064 | struct partial_symtab *); | |
c906108c | 1065 | |
fae299cd DC |
1066 | static void get_scope_pc_bounds (struct die_info *, |
1067 | CORE_ADDR *, CORE_ADDR *, | |
1068 | struct dwarf2_cu *); | |
1069 | ||
801e3a5b JB |
1070 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1071 | CORE_ADDR, struct dwarf2_cu *); | |
1072 | ||
a14ed312 | 1073 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1074 | struct dwarf2_cu *); |
c906108c | 1075 | |
a14ed312 | 1076 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1077 | struct type *, struct dwarf2_cu *); |
c906108c | 1078 | |
a14ed312 | 1079 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1080 | struct die_info *, struct type *, |
e7c27a73 | 1081 | struct dwarf2_cu *); |
c906108c | 1082 | |
a14ed312 | 1083 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1084 | struct type *, |
1085 | struct dwarf2_cu *); | |
c906108c | 1086 | |
134d01f1 | 1087 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1088 | |
e7c27a73 | 1089 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1090 | |
e7c27a73 | 1091 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1092 | |
5d7cb8df JK |
1093 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1094 | ||
27aa8d6a SW |
1095 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1096 | ||
f55ee35c JK |
1097 | static struct type *read_module_type (struct die_info *die, |
1098 | struct dwarf2_cu *cu); | |
1099 | ||
38d518c9 | 1100 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1101 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1102 | |
134d01f1 | 1103 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1104 | |
e7c27a73 | 1105 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1106 | |
6e70227d | 1107 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1108 | struct dwarf2_cu *); |
1109 | ||
93311388 | 1110 | static struct die_info *read_comp_unit (gdb_byte *, struct dwarf2_cu *); |
c906108c | 1111 | |
93311388 DE |
1112 | static struct die_info *read_die_and_children_1 (const struct die_reader_specs *reader, |
1113 | gdb_byte *info_ptr, | |
d97bc12b DE |
1114 | gdb_byte **new_info_ptr, |
1115 | struct die_info *parent); | |
1116 | ||
93311388 DE |
1117 | static struct die_info *read_die_and_children (const struct die_reader_specs *reader, |
1118 | gdb_byte *info_ptr, | |
fe1b8b76 | 1119 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1120 | struct die_info *parent); |
1121 | ||
93311388 DE |
1122 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *reader, |
1123 | gdb_byte *info_ptr, | |
fe1b8b76 | 1124 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1125 | struct die_info *parent); |
1126 | ||
93311388 DE |
1127 | static gdb_byte *read_full_die (const struct die_reader_specs *reader, |
1128 | struct die_info **, gdb_byte *, | |
1129 | int *); | |
1130 | ||
e7c27a73 | 1131 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1132 | |
71c25dea TT |
1133 | static char *dwarf2_canonicalize_name (char *, struct dwarf2_cu *, |
1134 | struct obstack *); | |
1135 | ||
e142c38c | 1136 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1137 | |
98bfdba5 PA |
1138 | static const char *dwarf2_full_name (char *name, |
1139 | struct die_info *die, | |
1140 | struct dwarf2_cu *cu); | |
1141 | ||
e142c38c | 1142 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1143 | struct dwarf2_cu **); |
9219021c | 1144 | |
a14ed312 | 1145 | static char *dwarf_tag_name (unsigned int); |
c906108c | 1146 | |
a14ed312 | 1147 | static char *dwarf_attr_name (unsigned int); |
c906108c | 1148 | |
a14ed312 | 1149 | static char *dwarf_form_name (unsigned int); |
c906108c | 1150 | |
a14ed312 | 1151 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1152 | |
a14ed312 | 1153 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
1154 | |
1155 | #if 0 | |
a14ed312 | 1156 | static char *dwarf_cfi_name (unsigned int); |
c906108c SS |
1157 | #endif |
1158 | ||
f9aca02d | 1159 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1160 | |
d97bc12b DE |
1161 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1162 | ||
1163 | static void dump_die_for_error (struct die_info *); | |
1164 | ||
1165 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1166 | struct die_info *); | |
c906108c | 1167 | |
d97bc12b | 1168 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1169 | |
51545339 | 1170 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1171 | struct dwarf2_cu *); |
c906108c | 1172 | |
93311388 DE |
1173 | static int is_ref_attr (struct attribute *); |
1174 | ||
c764a876 | 1175 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1176 | |
43bbcdc2 | 1177 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1178 | |
348e048f DE |
1179 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1180 | struct attribute *, | |
1181 | struct dwarf2_cu **); | |
1182 | ||
10b3939b DJ |
1183 | static struct die_info *follow_die_ref (struct die_info *, |
1184 | struct attribute *, | |
f2f0e013 | 1185 | struct dwarf2_cu **); |
c906108c | 1186 | |
348e048f DE |
1187 | static struct die_info *follow_die_sig (struct die_info *, |
1188 | struct attribute *, | |
1189 | struct dwarf2_cu **); | |
1190 | ||
1191 | static void read_signatured_type_at_offset (struct objfile *objfile, | |
1192 | unsigned int offset); | |
1193 | ||
1194 | static void read_signatured_type (struct objfile *, | |
1195 | struct signatured_type *type_sig); | |
1196 | ||
c906108c SS |
1197 | /* memory allocation interface */ |
1198 | ||
7b5a2f43 | 1199 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1200 | |
f3dd6933 | 1201 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1202 | |
b60c80d6 | 1203 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1204 | |
e142c38c | 1205 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 1206 | |
e142c38c DJ |
1207 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
1208 | struct dwarf2_cu *); | |
5fb290d7 | 1209 | |
2e276125 | 1210 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 1211 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 1212 | |
8e19ed76 PS |
1213 | static int attr_form_is_block (struct attribute *); |
1214 | ||
3690dd37 JB |
1215 | static int attr_form_is_section_offset (struct attribute *); |
1216 | ||
1217 | static int attr_form_is_constant (struct attribute *); | |
1218 | ||
8cf6f0b1 TT |
1219 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1220 | struct dwarf2_loclist_baton *baton, | |
1221 | struct attribute *attr); | |
1222 | ||
93e7bd98 DJ |
1223 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1224 | struct symbol *sym, | |
1225 | struct dwarf2_cu *cu); | |
4c2df51b | 1226 | |
93311388 DE |
1227 | static gdb_byte *skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
1228 | struct abbrev_info *abbrev, | |
1229 | struct dwarf2_cu *cu); | |
4bb7a0a7 | 1230 | |
72bf9492 DJ |
1231 | static void free_stack_comp_unit (void *); |
1232 | ||
72bf9492 DJ |
1233 | static hashval_t partial_die_hash (const void *item); |
1234 | ||
1235 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1236 | ||
ae038cb0 | 1237 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
c764a876 | 1238 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 DJ |
1239 | |
1240 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
c764a876 | 1241 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 | 1242 | |
9816fde3 JK |
1243 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
1244 | struct objfile *objfile); | |
1245 | ||
1246 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
1247 | struct die_info *comp_unit_die); | |
93311388 | 1248 | |
ae038cb0 DJ |
1249 | static void free_one_comp_unit (void *); |
1250 | ||
1251 | static void free_cached_comp_units (void *); | |
1252 | ||
1253 | static void age_cached_comp_units (void); | |
1254 | ||
1255 | static void free_one_cached_comp_unit (void *); | |
1256 | ||
f792889a DJ |
1257 | static struct type *set_die_type (struct die_info *, struct type *, |
1258 | struct dwarf2_cu *); | |
1c379e20 | 1259 | |
ae038cb0 DJ |
1260 | static void create_all_comp_units (struct objfile *); |
1261 | ||
1fd400ff TT |
1262 | static int create_debug_types_hash_table (struct objfile *objfile); |
1263 | ||
93311388 DE |
1264 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1265 | struct objfile *); | |
10b3939b DJ |
1266 | |
1267 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1268 | ||
1269 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1270 | struct dwarf2_per_cu_data *); | |
1271 | ||
ae038cb0 DJ |
1272 | static void dwarf2_mark (struct dwarf2_cu *); |
1273 | ||
1274 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1275 | ||
673bfd45 DE |
1276 | static struct type *get_die_type_at_offset (unsigned int, |
1277 | struct dwarf2_per_cu_data *per_cu); | |
1278 | ||
f792889a | 1279 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1280 | |
9291a0cd TT |
1281 | static void dwarf2_release_queue (void *dummy); |
1282 | ||
1283 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, | |
1284 | struct objfile *objfile); | |
1285 | ||
1286 | static void process_queue (struct objfile *objfile); | |
1287 | ||
1288 | static void find_file_and_directory (struct die_info *die, | |
1289 | struct dwarf2_cu *cu, | |
1290 | char **name, char **comp_dir); | |
1291 | ||
1292 | static char *file_full_name (int file, struct line_header *lh, | |
1293 | const char *comp_dir); | |
1294 | ||
1295 | static gdb_byte *partial_read_comp_unit_head (struct comp_unit_head *header, | |
1296 | gdb_byte *info_ptr, | |
1297 | gdb_byte *buffer, | |
1298 | unsigned int buffer_size, | |
1299 | bfd *abfd); | |
1300 | ||
1301 | static void init_cu_die_reader (struct die_reader_specs *reader, | |
1302 | struct dwarf2_cu *cu); | |
1303 | ||
673bfd45 | 1304 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1305 | |
9291a0cd TT |
1306 | #if WORDS_BIGENDIAN |
1307 | ||
1308 | /* Convert VALUE between big- and little-endian. */ | |
1309 | static offset_type | |
1310 | byte_swap (offset_type value) | |
1311 | { | |
1312 | offset_type result; | |
1313 | ||
1314 | result = (value & 0xff) << 24; | |
1315 | result |= (value & 0xff00) << 8; | |
1316 | result |= (value & 0xff0000) >> 8; | |
1317 | result |= (value & 0xff000000) >> 24; | |
1318 | return result; | |
1319 | } | |
1320 | ||
1321 | #define MAYBE_SWAP(V) byte_swap (V) | |
1322 | ||
1323 | #else | |
1324 | #define MAYBE_SWAP(V) (V) | |
1325 | #endif /* WORDS_BIGENDIAN */ | |
1326 | ||
1327 | /* The suffix for an index file. */ | |
1328 | #define INDEX_SUFFIX ".gdb-index" | |
1329 | ||
3da10d80 KS |
1330 | static const char *dwarf2_physname (char *name, struct die_info *die, |
1331 | struct dwarf2_cu *cu); | |
1332 | ||
c906108c SS |
1333 | /* Try to locate the sections we need for DWARF 2 debugging |
1334 | information and return true if we have enough to do something. */ | |
1335 | ||
1336 | int | |
6502dd73 | 1337 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1338 | { |
be391dca TT |
1339 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1340 | if (!dwarf2_per_objfile) | |
1341 | { | |
1342 | /* Initialize per-objfile state. */ | |
1343 | struct dwarf2_per_objfile *data | |
1344 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1345 | |
be391dca TT |
1346 | memset (data, 0, sizeof (*data)); |
1347 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1348 | dwarf2_per_objfile = data; | |
6502dd73 | 1349 | |
be391dca TT |
1350 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
1351 | dwarf2_per_objfile->objfile = objfile; | |
1352 | } | |
1353 | return (dwarf2_per_objfile->info.asection != NULL | |
1354 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1355 | } |
1356 | ||
233a11ab CS |
1357 | /* When loading sections, we can either look for ".<name>", or for |
1358 | * ".z<name>", which indicates a compressed section. */ | |
1359 | ||
1360 | static int | |
dce234bc | 1361 | section_is_p (const char *section_name, const char *name) |
233a11ab | 1362 | { |
dce234bc PP |
1363 | return (section_name[0] == '.' |
1364 | && (strcmp (section_name + 1, name) == 0 | |
1365 | || (section_name[1] == 'z' | |
1366 | && strcmp (section_name + 2, name) == 0))); | |
233a11ab CS |
1367 | } |
1368 | ||
c906108c SS |
1369 | /* This function is mapped across the sections and remembers the |
1370 | offset and size of each of the debugging sections we are interested | |
1371 | in. */ | |
1372 | ||
1373 | static void | |
72dca2f5 | 1374 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1375 | { |
dce234bc | 1376 | if (section_is_p (sectp->name, INFO_SECTION)) |
c906108c | 1377 | { |
dce234bc PP |
1378 | dwarf2_per_objfile->info.asection = sectp; |
1379 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1380 | } |
dce234bc | 1381 | else if (section_is_p (sectp->name, ABBREV_SECTION)) |
c906108c | 1382 | { |
dce234bc PP |
1383 | dwarf2_per_objfile->abbrev.asection = sectp; |
1384 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1385 | } |
dce234bc | 1386 | else if (section_is_p (sectp->name, LINE_SECTION)) |
c906108c | 1387 | { |
dce234bc PP |
1388 | dwarf2_per_objfile->line.asection = sectp; |
1389 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1390 | } |
dce234bc | 1391 | else if (section_is_p (sectp->name, LOC_SECTION)) |
c906108c | 1392 | { |
dce234bc PP |
1393 | dwarf2_per_objfile->loc.asection = sectp; |
1394 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1395 | } |
dce234bc | 1396 | else if (section_is_p (sectp->name, MACINFO_SECTION)) |
c906108c | 1397 | { |
dce234bc PP |
1398 | dwarf2_per_objfile->macinfo.asection = sectp; |
1399 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1400 | } |
dce234bc | 1401 | else if (section_is_p (sectp->name, STR_SECTION)) |
c906108c | 1402 | { |
dce234bc PP |
1403 | dwarf2_per_objfile->str.asection = sectp; |
1404 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1405 | } |
dce234bc | 1406 | else if (section_is_p (sectp->name, FRAME_SECTION)) |
b6af0555 | 1407 | { |
dce234bc PP |
1408 | dwarf2_per_objfile->frame.asection = sectp; |
1409 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1410 | } |
dce234bc | 1411 | else if (section_is_p (sectp->name, EH_FRAME_SECTION)) |
b6af0555 | 1412 | { |
3799ccc6 | 1413 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
9a619af0 | 1414 | |
3799ccc6 EZ |
1415 | if (aflag & SEC_HAS_CONTENTS) |
1416 | { | |
dce234bc PP |
1417 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1418 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
3799ccc6 | 1419 | } |
b6af0555 | 1420 | } |
dce234bc | 1421 | else if (section_is_p (sectp->name, RANGES_SECTION)) |
af34e669 | 1422 | { |
dce234bc PP |
1423 | dwarf2_per_objfile->ranges.asection = sectp; |
1424 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1425 | } |
348e048f DE |
1426 | else if (section_is_p (sectp->name, TYPES_SECTION)) |
1427 | { | |
1428 | dwarf2_per_objfile->types.asection = sectp; | |
1429 | dwarf2_per_objfile->types.size = bfd_get_section_size (sectp); | |
1430 | } | |
9291a0cd TT |
1431 | else if (section_is_p (sectp->name, GDB_INDEX_SECTION)) |
1432 | { | |
1433 | dwarf2_per_objfile->gdb_index.asection = sectp; | |
1434 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); | |
1435 | } | |
dce234bc | 1436 | |
72dca2f5 FR |
1437 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1438 | && bfd_section_vma (abfd, sectp) == 0) | |
1439 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1440 | } |
1441 | ||
dce234bc PP |
1442 | /* Decompress a section that was compressed using zlib. Store the |
1443 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
233a11ab CS |
1444 | |
1445 | static void | |
dce234bc PP |
1446 | zlib_decompress_section (struct objfile *objfile, asection *sectp, |
1447 | gdb_byte **outbuf, bfd_size_type *outsize) | |
1448 | { | |
1449 | bfd *abfd = objfile->obfd; | |
1450 | #ifndef HAVE_ZLIB_H | |
1451 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
1452 | "is disabled in this copy of GDB"), | |
1453 | bfd_get_filename (abfd)); | |
1454 | #else | |
1455 | bfd_size_type compressed_size = bfd_get_section_size (sectp); | |
1456 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
affddf13 | 1457 | struct cleanup *cleanup = make_cleanup (xfree, compressed_buffer); |
dce234bc PP |
1458 | bfd_size_type uncompressed_size; |
1459 | gdb_byte *uncompressed_buffer; | |
1460 | z_stream strm; | |
1461 | int rc; | |
1462 | int header_size = 12; | |
1463 | ||
1464 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
3e43a32a MS |
1465 | || bfd_bread (compressed_buffer, |
1466 | compressed_size, abfd) != compressed_size) | |
dce234bc PP |
1467 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
1468 | bfd_get_filename (abfd)); | |
1469 | ||
1470 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
1471 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
1472 | if (compressed_size < header_size | |
1473 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
1474 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
1475 | bfd_get_filename (abfd)); | |
1476 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
1477 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
1478 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
1479 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
1480 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
1481 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
1482 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
1483 | uncompressed_size += compressed_buffer[11]; | |
1484 | ||
1485 | /* It is possible the section consists of several compressed | |
1486 | buffers concatenated together, so we uncompress in a loop. */ | |
1487 | strm.zalloc = NULL; | |
1488 | strm.zfree = NULL; | |
1489 | strm.opaque = NULL; | |
1490 | strm.avail_in = compressed_size - header_size; | |
1491 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
1492 | strm.avail_out = uncompressed_size; | |
1493 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
1494 | uncompressed_size); | |
1495 | rc = inflateInit (&strm); | |
1496 | while (strm.avail_in > 0) | |
1497 | { | |
1498 | if (rc != Z_OK) | |
1499 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
1500 | bfd_get_filename (abfd), rc); | |
1501 | strm.next_out = ((Bytef*) uncompressed_buffer | |
1502 | + (uncompressed_size - strm.avail_out)); | |
1503 | rc = inflate (&strm, Z_FINISH); | |
1504 | if (rc != Z_STREAM_END) | |
1505 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
1506 | bfd_get_filename (abfd), rc); | |
1507 | rc = inflateReset (&strm); | |
1508 | } | |
1509 | rc = inflateEnd (&strm); | |
1510 | if (rc != Z_OK | |
1511 | || strm.avail_out != 0) | |
1512 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
1513 | bfd_get_filename (abfd), rc); | |
1514 | ||
affddf13 | 1515 | do_cleanups (cleanup); |
dce234bc PP |
1516 | *outbuf = uncompressed_buffer; |
1517 | *outsize = uncompressed_size; | |
1518 | #endif | |
233a11ab CS |
1519 | } |
1520 | ||
9e0ac564 TT |
1521 | /* A helper function that decides whether a section is empty. */ |
1522 | ||
1523 | static int | |
1524 | dwarf2_section_empty_p (struct dwarf2_section_info *info) | |
1525 | { | |
1526 | return info->asection == NULL || info->size == 0; | |
1527 | } | |
1528 | ||
dce234bc PP |
1529 | /* Read the contents of the section SECTP from object file specified by |
1530 | OBJFILE, store info about the section into INFO. | |
1531 | If the section is compressed, uncompress it before returning. */ | |
c906108c | 1532 | |
dce234bc PP |
1533 | static void |
1534 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1535 | { |
dce234bc PP |
1536 | bfd *abfd = objfile->obfd; |
1537 | asection *sectp = info->asection; | |
1538 | gdb_byte *buf, *retbuf; | |
1539 | unsigned char header[4]; | |
c906108c | 1540 | |
be391dca TT |
1541 | if (info->readin) |
1542 | return; | |
dce234bc PP |
1543 | info->buffer = NULL; |
1544 | info->was_mmapped = 0; | |
be391dca | 1545 | info->readin = 1; |
188dd5d6 | 1546 | |
9e0ac564 | 1547 | if (dwarf2_section_empty_p (info)) |
dce234bc | 1548 | return; |
c906108c | 1549 | |
dce234bc PP |
1550 | /* Check if the file has a 4-byte header indicating compression. */ |
1551 | if (info->size > sizeof (header) | |
1552 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
1553 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
1554 | { | |
1555 | /* Upon decompression, update the buffer and its size. */ | |
1556 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
1557 | { | |
1558 | zlib_decompress_section (objfile, sectp, &info->buffer, | |
1559 | &info->size); | |
1560 | return; | |
1561 | } | |
1562 | } | |
4bdf3d34 | 1563 | |
dce234bc PP |
1564 | #ifdef HAVE_MMAP |
1565 | if (pagesize == 0) | |
1566 | pagesize = getpagesize (); | |
2e276125 | 1567 | |
dce234bc PP |
1568 | /* Only try to mmap sections which are large enough: we don't want to |
1569 | waste space due to fragmentation. Also, only try mmap for sections | |
1570 | without relocations. */ | |
1571 | ||
1572 | if (info->size > 4 * pagesize && (sectp->flags & SEC_RELOC) == 0) | |
1573 | { | |
1574 | off_t pg_offset = sectp->filepos & ~(pagesize - 1); | |
1575 | size_t map_length = info->size + sectp->filepos - pg_offset; | |
1576 | caddr_t retbuf = bfd_mmap (abfd, 0, map_length, PROT_READ, | |
1577 | MAP_PRIVATE, pg_offset); | |
1578 | ||
1579 | if (retbuf != MAP_FAILED) | |
1580 | { | |
1581 | info->was_mmapped = 1; | |
1582 | info->buffer = retbuf + (sectp->filepos & (pagesize - 1)) ; | |
be391dca TT |
1583 | #if HAVE_POSIX_MADVISE |
1584 | posix_madvise (retbuf, map_length, POSIX_MADV_WILLNEED); | |
1585 | #endif | |
dce234bc PP |
1586 | return; |
1587 | } | |
1588 | } | |
1589 | #endif | |
1590 | ||
1591 | /* If we get here, we are a normal, not-compressed section. */ | |
1592 | info->buffer = buf | |
1593 | = obstack_alloc (&objfile->objfile_obstack, info->size); | |
1594 | ||
1595 | /* When debugging .o files, we may need to apply relocations; see | |
1596 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1597 | We never compress sections in .o files, so we only need to | |
1598 | try this when the section is not compressed. */ | |
ac8035ab | 1599 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1600 | if (retbuf != NULL) |
1601 | { | |
1602 | info->buffer = retbuf; | |
1603 | return; | |
1604 | } | |
1605 | ||
1606 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1607 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1608 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1609 | bfd_get_filename (abfd)); | |
1610 | } | |
1611 | ||
9e0ac564 TT |
1612 | /* A helper function that returns the size of a section in a safe way. |
1613 | If you are positive that the section has been read before using the | |
1614 | size, then it is safe to refer to the dwarf2_section_info object's | |
1615 | "size" field directly. In other cases, you must call this | |
1616 | function, because for compressed sections the size field is not set | |
1617 | correctly until the section has been read. */ | |
1618 | ||
1619 | static bfd_size_type | |
1620 | dwarf2_section_size (struct objfile *objfile, | |
1621 | struct dwarf2_section_info *info) | |
1622 | { | |
1623 | if (!info->readin) | |
1624 | dwarf2_read_section (objfile, info); | |
1625 | return info->size; | |
1626 | } | |
1627 | ||
dce234bc | 1628 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 1629 | SECTION_NAME. */ |
af34e669 | 1630 | |
dce234bc PP |
1631 | void |
1632 | dwarf2_get_section_info (struct objfile *objfile, const char *section_name, | |
1633 | asection **sectp, gdb_byte **bufp, | |
1634 | bfd_size_type *sizep) | |
1635 | { | |
1636 | struct dwarf2_per_objfile *data | |
1637 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
1638 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
1639 | |
1640 | /* We may see an objfile without any DWARF, in which case we just | |
1641 | return nothing. */ | |
1642 | if (data == NULL) | |
1643 | { | |
1644 | *sectp = NULL; | |
1645 | *bufp = NULL; | |
1646 | *sizep = 0; | |
1647 | return; | |
1648 | } | |
dce234bc PP |
1649 | if (section_is_p (section_name, EH_FRAME_SECTION)) |
1650 | info = &data->eh_frame; | |
1651 | else if (section_is_p (section_name, FRAME_SECTION)) | |
1652 | info = &data->frame; | |
0d53c4c4 | 1653 | else |
f3574227 | 1654 | gdb_assert_not_reached ("unexpected section"); |
dce234bc | 1655 | |
9e0ac564 | 1656 | dwarf2_read_section (objfile, info); |
dce234bc PP |
1657 | |
1658 | *sectp = info->asection; | |
1659 | *bufp = info->buffer; | |
1660 | *sizep = info->size; | |
1661 | } | |
1662 | ||
9291a0cd | 1663 | \f |
7b9f3c50 DE |
1664 | /* DWARF quick_symbols_functions support. */ |
1665 | ||
1666 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
1667 | unique line tables, so we maintain a separate table of all .debug_line | |
1668 | derived entries to support the sharing. | |
1669 | All the quick functions need is the list of file names. We discard the | |
1670 | line_header when we're done and don't need to record it here. */ | |
1671 | struct quick_file_names | |
1672 | { | |
1673 | /* The offset in .debug_line of the line table. We hash on this. */ | |
1674 | unsigned int offset; | |
1675 | ||
1676 | /* The number of entries in file_names, real_names. */ | |
1677 | unsigned int num_file_names; | |
1678 | ||
1679 | /* The file names from the line table, after being run through | |
1680 | file_full_name. */ | |
1681 | const char **file_names; | |
1682 | ||
1683 | /* The file names from the line table after being run through | |
1684 | gdb_realpath. These are computed lazily. */ | |
1685 | const char **real_names; | |
1686 | }; | |
1687 | ||
1688 | /* When using the index (and thus not using psymtabs), each CU has an | |
1689 | object of this type. This is used to hold information needed by | |
1690 | the various "quick" methods. */ | |
1691 | struct dwarf2_per_cu_quick_data | |
1692 | { | |
1693 | /* The file table. This can be NULL if there was no file table | |
1694 | or it's currently not read in. | |
1695 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
1696 | struct quick_file_names *file_names; | |
1697 | ||
1698 | /* The corresponding symbol table. This is NULL if symbols for this | |
1699 | CU have not yet been read. */ | |
1700 | struct symtab *symtab; | |
1701 | ||
1702 | /* A temporary mark bit used when iterating over all CUs in | |
1703 | expand_symtabs_matching. */ | |
1704 | unsigned int mark : 1; | |
1705 | ||
1706 | /* True if we've tried to read the file table and found there isn't one. | |
1707 | There will be no point in trying to read it again next time. */ | |
1708 | unsigned int no_file_data : 1; | |
1709 | }; | |
1710 | ||
1711 | /* Hash function for a quick_file_names. */ | |
1712 | ||
1713 | static hashval_t | |
1714 | hash_file_name_entry (const void *e) | |
1715 | { | |
1716 | const struct quick_file_names *file_data = e; | |
1717 | ||
1718 | return file_data->offset; | |
1719 | } | |
1720 | ||
1721 | /* Equality function for a quick_file_names. */ | |
1722 | ||
1723 | static int | |
1724 | eq_file_name_entry (const void *a, const void *b) | |
1725 | { | |
1726 | const struct quick_file_names *ea = a; | |
1727 | const struct quick_file_names *eb = b; | |
1728 | ||
1729 | return ea->offset == eb->offset; | |
1730 | } | |
1731 | ||
1732 | /* Delete function for a quick_file_names. */ | |
1733 | ||
1734 | static void | |
1735 | delete_file_name_entry (void *e) | |
1736 | { | |
1737 | struct quick_file_names *file_data = e; | |
1738 | int i; | |
1739 | ||
1740 | for (i = 0; i < file_data->num_file_names; ++i) | |
1741 | { | |
1742 | xfree ((void*) file_data->file_names[i]); | |
1743 | if (file_data->real_names) | |
1744 | xfree ((void*) file_data->real_names[i]); | |
1745 | } | |
1746 | ||
1747 | /* The space for the struct itself lives on objfile_obstack, | |
1748 | so we don't free it here. */ | |
1749 | } | |
1750 | ||
1751 | /* Create a quick_file_names hash table. */ | |
1752 | ||
1753 | static htab_t | |
1754 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
1755 | { | |
1756 | return htab_create_alloc (nr_initial_entries, | |
1757 | hash_file_name_entry, eq_file_name_entry, | |
1758 | delete_file_name_entry, xcalloc, xfree); | |
1759 | } | |
9291a0cd TT |
1760 | |
1761 | /* Read in the symbols for PER_CU. OBJFILE is the objfile from which | |
1762 | this CU came. */ | |
2fdf6df6 | 1763 | |
9291a0cd TT |
1764 | static void |
1765 | dw2_do_instantiate_symtab (struct objfile *objfile, | |
1766 | struct dwarf2_per_cu_data *per_cu) | |
1767 | { | |
1768 | struct cleanup *back_to; | |
1769 | ||
1770 | back_to = make_cleanup (dwarf2_release_queue, NULL); | |
1771 | ||
1772 | queue_comp_unit (per_cu, objfile); | |
1773 | ||
1774 | if (per_cu->from_debug_types) | |
1775 | read_signatured_type_at_offset (objfile, per_cu->offset); | |
1776 | else | |
1777 | load_full_comp_unit (per_cu, objfile); | |
1778 | ||
1779 | process_queue (objfile); | |
1780 | ||
1781 | /* Age the cache, releasing compilation units that have not | |
1782 | been used recently. */ | |
1783 | age_cached_comp_units (); | |
1784 | ||
1785 | do_cleanups (back_to); | |
1786 | } | |
1787 | ||
1788 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
1789 | the objfile from which this CU came. Returns the resulting symbol | |
1790 | table. */ | |
2fdf6df6 | 1791 | |
9291a0cd TT |
1792 | static struct symtab * |
1793 | dw2_instantiate_symtab (struct objfile *objfile, | |
1794 | struct dwarf2_per_cu_data *per_cu) | |
1795 | { | |
1796 | if (!per_cu->v.quick->symtab) | |
1797 | { | |
1798 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
1799 | increment_reading_symtab (); | |
1800 | dw2_do_instantiate_symtab (objfile, per_cu); | |
1801 | do_cleanups (back_to); | |
1802 | } | |
1803 | return per_cu->v.quick->symtab; | |
1804 | } | |
1805 | ||
1fd400ff | 1806 | /* Return the CU given its index. */ |
2fdf6df6 | 1807 | |
1fd400ff TT |
1808 | static struct dwarf2_per_cu_data * |
1809 | dw2_get_cu (int index) | |
1810 | { | |
1811 | if (index >= dwarf2_per_objfile->n_comp_units) | |
1812 | { | |
1813 | index -= dwarf2_per_objfile->n_comp_units; | |
1814 | return dwarf2_per_objfile->type_comp_units[index]; | |
1815 | } | |
1816 | return dwarf2_per_objfile->all_comp_units[index]; | |
1817 | } | |
1818 | ||
9291a0cd TT |
1819 | /* A helper function that knows how to read a 64-bit value in a way |
1820 | that doesn't make gdb die. Returns 1 if the conversion went ok, 0 | |
1821 | otherwise. */ | |
2fdf6df6 | 1822 | |
9291a0cd TT |
1823 | static int |
1824 | extract_cu_value (const char *bytes, ULONGEST *result) | |
1825 | { | |
1826 | if (sizeof (ULONGEST) < 8) | |
1827 | { | |
1828 | int i; | |
1829 | ||
1830 | /* Ignore the upper 4 bytes if they are all zero. */ | |
1831 | for (i = 0; i < 4; ++i) | |
1832 | if (bytes[i + 4] != 0) | |
1833 | return 0; | |
1834 | ||
1835 | *result = extract_unsigned_integer (bytes, 4, BFD_ENDIAN_LITTLE); | |
1836 | } | |
1837 | else | |
1838 | *result = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
1839 | return 1; | |
1840 | } | |
1841 | ||
1842 | /* Read the CU list from the mapped index, and use it to create all | |
1843 | the CU objects for this objfile. Return 0 if something went wrong, | |
1844 | 1 if everything went ok. */ | |
2fdf6df6 | 1845 | |
9291a0cd | 1846 | static int |
1fd400ff TT |
1847 | create_cus_from_index (struct objfile *objfile, const gdb_byte *cu_list, |
1848 | offset_type cu_list_elements) | |
9291a0cd TT |
1849 | { |
1850 | offset_type i; | |
9291a0cd TT |
1851 | |
1852 | dwarf2_per_objfile->n_comp_units = cu_list_elements / 2; | |
1853 | dwarf2_per_objfile->all_comp_units | |
1854 | = obstack_alloc (&objfile->objfile_obstack, | |
1855 | dwarf2_per_objfile->n_comp_units | |
1856 | * sizeof (struct dwarf2_per_cu_data *)); | |
1857 | ||
1858 | for (i = 0; i < cu_list_elements; i += 2) | |
1859 | { | |
1860 | struct dwarf2_per_cu_data *the_cu; | |
1861 | ULONGEST offset, length; | |
1862 | ||
1863 | if (!extract_cu_value (cu_list, &offset) | |
1864 | || !extract_cu_value (cu_list + 8, &length)) | |
1865 | return 0; | |
1866 | cu_list += 2 * 8; | |
1867 | ||
1868 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1869 | struct dwarf2_per_cu_data); | |
1870 | the_cu->offset = offset; | |
1871 | the_cu->length = length; | |
1872 | the_cu->objfile = objfile; | |
1873 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1874 | struct dwarf2_per_cu_quick_data); | |
1875 | dwarf2_per_objfile->all_comp_units[i / 2] = the_cu; | |
1876 | } | |
1877 | ||
1878 | return 1; | |
1879 | } | |
1880 | ||
1fd400ff | 1881 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 1882 | |
1fd400ff | 1883 | static int |
673bfd45 DE |
1884 | create_signatured_type_table_from_index (struct objfile *objfile, |
1885 | const gdb_byte *bytes, | |
1886 | offset_type elements) | |
1fd400ff TT |
1887 | { |
1888 | offset_type i; | |
673bfd45 | 1889 | htab_t sig_types_hash; |
1fd400ff TT |
1890 | |
1891 | dwarf2_per_objfile->n_type_comp_units = elements / 3; | |
1892 | dwarf2_per_objfile->type_comp_units | |
1893 | = obstack_alloc (&objfile->objfile_obstack, | |
1894 | dwarf2_per_objfile->n_type_comp_units | |
1895 | * sizeof (struct dwarf2_per_cu_data *)); | |
1896 | ||
673bfd45 | 1897 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
1898 | |
1899 | for (i = 0; i < elements; i += 3) | |
1900 | { | |
1901 | struct signatured_type *type_sig; | |
1902 | ULONGEST offset, type_offset, signature; | |
1903 | void **slot; | |
1904 | ||
1905 | if (!extract_cu_value (bytes, &offset) | |
1906 | || !extract_cu_value (bytes + 8, &type_offset)) | |
1907 | return 0; | |
1908 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); | |
1909 | bytes += 3 * 8; | |
1910 | ||
1911 | type_sig = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1912 | struct signatured_type); | |
1913 | type_sig->signature = signature; | |
1914 | type_sig->offset = offset; | |
1915 | type_sig->type_offset = type_offset; | |
1916 | type_sig->per_cu.from_debug_types = 1; | |
1917 | type_sig->per_cu.offset = offset; | |
1918 | type_sig->per_cu.objfile = objfile; | |
1919 | type_sig->per_cu.v.quick | |
1920 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1921 | struct dwarf2_per_cu_quick_data); | |
1922 | ||
673bfd45 | 1923 | slot = htab_find_slot (sig_types_hash, type_sig, INSERT); |
1fd400ff TT |
1924 | *slot = type_sig; |
1925 | ||
1926 | dwarf2_per_objfile->type_comp_units[i / 3] = &type_sig->per_cu; | |
1927 | } | |
1928 | ||
673bfd45 | 1929 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
1930 | |
1931 | return 1; | |
1932 | } | |
1933 | ||
9291a0cd TT |
1934 | /* Read the address map data from the mapped index, and use it to |
1935 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 1936 | |
9291a0cd TT |
1937 | static void |
1938 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
1939 | { | |
1940 | const gdb_byte *iter, *end; | |
1941 | struct obstack temp_obstack; | |
1942 | struct addrmap *mutable_map; | |
1943 | struct cleanup *cleanup; | |
1944 | CORE_ADDR baseaddr; | |
1945 | ||
1946 | obstack_init (&temp_obstack); | |
1947 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
1948 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
1949 | ||
1950 | iter = index->address_table; | |
1951 | end = iter + index->address_table_size; | |
1952 | ||
1953 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
1954 | ||
1955 | while (iter < end) | |
1956 | { | |
1957 | ULONGEST hi, lo, cu_index; | |
1958 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
1959 | iter += 8; | |
1960 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
1961 | iter += 8; | |
1962 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
1963 | iter += 4; | |
1964 | ||
1965 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
1fd400ff | 1966 | dw2_get_cu (cu_index)); |
9291a0cd TT |
1967 | } |
1968 | ||
1969 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
1970 | &objfile->objfile_obstack); | |
1971 | do_cleanups (cleanup); | |
1972 | } | |
1973 | ||
59d7bcaf JK |
1974 | /* The hash function for strings in the mapped index. This is the same as |
1975 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
1976 | implementation. This is necessary because the hash function is tied to the | |
1977 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
1978 | SYMBOL_HASH_NEXT. |
1979 | ||
1980 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 1981 | |
9291a0cd | 1982 | static hashval_t |
559a7a62 | 1983 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
1984 | { |
1985 | const unsigned char *str = (const unsigned char *) p; | |
1986 | hashval_t r = 0; | |
1987 | unsigned char c; | |
1988 | ||
1989 | while ((c = *str++) != 0) | |
559a7a62 JK |
1990 | { |
1991 | if (index_version >= 5) | |
1992 | c = tolower (c); | |
1993 | r = r * 67 + c - 113; | |
1994 | } | |
9291a0cd TT |
1995 | |
1996 | return r; | |
1997 | } | |
1998 | ||
1999 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2000 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2001 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2002 | |
9291a0cd TT |
2003 | static int |
2004 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2005 | offset_type **vec_out) | |
2006 | { | |
0cf03b49 JK |
2007 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2008 | offset_type hash; | |
9291a0cd | 2009 | offset_type slot, step; |
559a7a62 | 2010 | int (*cmp) (const char *, const char *); |
9291a0cd | 2011 | |
0cf03b49 JK |
2012 | if (current_language->la_language == language_cplus |
2013 | || current_language->la_language == language_java | |
2014 | || current_language->la_language == language_fortran) | |
2015 | { | |
2016 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2017 | not contain any. */ | |
2018 | const char *paren = strchr (name, '('); | |
2019 | ||
2020 | if (paren) | |
2021 | { | |
2022 | char *dup; | |
2023 | ||
2024 | dup = xmalloc (paren - name + 1); | |
2025 | memcpy (dup, name, paren - name); | |
2026 | dup[paren - name] = 0; | |
2027 | ||
2028 | make_cleanup (xfree, dup); | |
2029 | name = dup; | |
2030 | } | |
2031 | } | |
2032 | ||
559a7a62 JK |
2033 | /* Index version 4 did not support case insensitive searches. But the |
2034 | indexes for case insensitive languages are built in lowercase, therefore | |
2035 | simulate our NAME being searched is also lowercased. */ | |
2036 | hash = mapped_index_string_hash ((index->version == 4 | |
2037 | && case_sensitivity == case_sensitive_off | |
2038 | ? 5 : index->version), | |
2039 | name); | |
2040 | ||
3876f04e DE |
2041 | slot = hash & (index->symbol_table_slots - 1); |
2042 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2043 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2044 | |
2045 | for (;;) | |
2046 | { | |
2047 | /* Convert a slot number to an offset into the table. */ | |
2048 | offset_type i = 2 * slot; | |
2049 | const char *str; | |
3876f04e | 2050 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2051 | { |
2052 | do_cleanups (back_to); | |
2053 | return 0; | |
2054 | } | |
9291a0cd | 2055 | |
3876f04e | 2056 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 2057 | if (!cmp (name, str)) |
9291a0cd TT |
2058 | { |
2059 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2060 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 2061 | do_cleanups (back_to); |
9291a0cd TT |
2062 | return 1; |
2063 | } | |
2064 | ||
3876f04e | 2065 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2066 | } |
2067 | } | |
2068 | ||
2069 | /* Read the index file. If everything went ok, initialize the "quick" | |
2070 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
2fdf6df6 | 2071 | |
9291a0cd TT |
2072 | static int |
2073 | dwarf2_read_index (struct objfile *objfile) | |
2074 | { | |
9291a0cd TT |
2075 | char *addr; |
2076 | struct mapped_index *map; | |
b3b272e1 | 2077 | offset_type *metadata; |
ac0b195c KW |
2078 | const gdb_byte *cu_list; |
2079 | const gdb_byte *types_list = NULL; | |
2080 | offset_type version, cu_list_elements; | |
2081 | offset_type types_list_elements = 0; | |
1fd400ff | 2082 | int i; |
9291a0cd | 2083 | |
9e0ac564 | 2084 | if (dwarf2_section_empty_p (&dwarf2_per_objfile->gdb_index)) |
9291a0cd | 2085 | return 0; |
82430852 JK |
2086 | |
2087 | /* Older elfutils strip versions could keep the section in the main | |
2088 | executable while splitting it for the separate debug info file. */ | |
2089 | if ((bfd_get_file_flags (dwarf2_per_objfile->gdb_index.asection) | |
2090 | & SEC_HAS_CONTENTS) == 0) | |
2091 | return 0; | |
2092 | ||
9291a0cd TT |
2093 | dwarf2_read_section (objfile, &dwarf2_per_objfile->gdb_index); |
2094 | ||
2095 | addr = dwarf2_per_objfile->gdb_index.buffer; | |
2096 | /* Version check. */ | |
1fd400ff | 2097 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2098 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2099 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2100 | contained incomplete addrmap. So, it seems better to just ignore such |
559a7a62 JK |
2101 | indices. Index version 4 uses a different hash function than index |
2102 | version 5 and later. */ | |
831adc1f | 2103 | if (version < 4) |
9291a0cd | 2104 | return 0; |
594e8718 JK |
2105 | /* Indexes with higher version than the one supported by GDB may be no |
2106 | longer backward compatible. */ | |
559a7a62 | 2107 | if (version > 5) |
594e8718 | 2108 | return 0; |
9291a0cd TT |
2109 | |
2110 | map = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct mapped_index); | |
559a7a62 | 2111 | map->version = version; |
b3b272e1 | 2112 | map->total_size = dwarf2_per_objfile->gdb_index.size; |
9291a0cd TT |
2113 | |
2114 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
2115 | |
2116 | i = 0; | |
2117 | cu_list = addr + MAYBE_SWAP (metadata[i]); | |
2118 | cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
9291a0cd | 2119 | / 8); |
1fd400ff TT |
2120 | ++i; |
2121 | ||
987d643c TT |
2122 | types_list = addr + MAYBE_SWAP (metadata[i]); |
2123 | types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2124 | - MAYBE_SWAP (metadata[i])) | |
2125 | / 8); | |
2126 | ++i; | |
1fd400ff TT |
2127 | |
2128 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
2129 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
2130 | - MAYBE_SWAP (metadata[i])); | |
2131 | ++i; | |
2132 | ||
3876f04e DE |
2133 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
2134 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
2135 | - MAYBE_SWAP (metadata[i])) | |
2136 | / (2 * sizeof (offset_type))); | |
1fd400ff | 2137 | ++i; |
9291a0cd | 2138 | |
1fd400ff TT |
2139 | map->constant_pool = addr + MAYBE_SWAP (metadata[i]); |
2140 | ||
2141 | if (!create_cus_from_index (objfile, cu_list, cu_list_elements)) | |
2142 | return 0; | |
2143 | ||
987d643c | 2144 | if (types_list_elements |
673bfd45 DE |
2145 | && !create_signatured_type_table_from_index (objfile, types_list, |
2146 | types_list_elements)) | |
9291a0cd TT |
2147 | return 0; |
2148 | ||
2149 | create_addrmap_from_index (objfile, map); | |
2150 | ||
2151 | dwarf2_per_objfile->index_table = map; | |
2152 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
2153 | dwarf2_per_objfile->quick_file_names_table = |
2154 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
2155 | |
2156 | return 1; | |
2157 | } | |
2158 | ||
2159 | /* A helper for the "quick" functions which sets the global | |
2160 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 2161 | |
9291a0cd TT |
2162 | static void |
2163 | dw2_setup (struct objfile *objfile) | |
2164 | { | |
2165 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
2166 | gdb_assert (dwarf2_per_objfile); | |
2167 | } | |
2168 | ||
2169 | /* A helper for the "quick" functions which attempts to read the line | |
2170 | table for THIS_CU. */ | |
2fdf6df6 | 2171 | |
7b9f3c50 DE |
2172 | static struct quick_file_names * |
2173 | dw2_get_file_names (struct objfile *objfile, | |
2174 | struct dwarf2_per_cu_data *this_cu) | |
9291a0cd TT |
2175 | { |
2176 | bfd *abfd = objfile->obfd; | |
7b9f3c50 | 2177 | struct line_header *lh; |
9291a0cd TT |
2178 | struct attribute *attr; |
2179 | struct cleanup *cleanups; | |
2180 | struct die_info *comp_unit_die; | |
36374493 | 2181 | struct dwarf2_section_info* sec; |
9291a0cd TT |
2182 | gdb_byte *beg_of_comp_unit, *info_ptr, *buffer; |
2183 | int has_children, i; | |
2184 | struct dwarf2_cu cu; | |
2185 | unsigned int bytes_read, buffer_size; | |
2186 | struct die_reader_specs reader_specs; | |
2187 | char *name, *comp_dir; | |
7b9f3c50 DE |
2188 | void **slot; |
2189 | struct quick_file_names *qfn; | |
2190 | unsigned int line_offset; | |
9291a0cd | 2191 | |
7b9f3c50 DE |
2192 | if (this_cu->v.quick->file_names != NULL) |
2193 | return this_cu->v.quick->file_names; | |
2194 | /* If we know there is no line data, no point in looking again. */ | |
2195 | if (this_cu->v.quick->no_file_data) | |
2196 | return NULL; | |
9291a0cd | 2197 | |
9816fde3 | 2198 | init_one_comp_unit (&cu, objfile); |
9291a0cd TT |
2199 | cleanups = make_cleanup (free_stack_comp_unit, &cu); |
2200 | ||
36374493 DE |
2201 | if (this_cu->from_debug_types) |
2202 | sec = &dwarf2_per_objfile->types; | |
2203 | else | |
2204 | sec = &dwarf2_per_objfile->info; | |
2205 | dwarf2_read_section (objfile, sec); | |
2206 | buffer_size = sec->size; | |
2207 | buffer = sec->buffer; | |
9291a0cd TT |
2208 | info_ptr = buffer + this_cu->offset; |
2209 | beg_of_comp_unit = info_ptr; | |
2210 | ||
2211 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, | |
2212 | buffer, buffer_size, | |
2213 | abfd); | |
2214 | ||
2215 | /* Complete the cu_header. */ | |
2216 | cu.header.offset = beg_of_comp_unit - buffer; | |
2217 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; | |
2218 | ||
2219 | this_cu->cu = &cu; | |
2220 | cu.per_cu = this_cu; | |
2221 | ||
2222 | dwarf2_read_abbrevs (abfd, &cu); | |
2223 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
2224 | ||
2225 | if (this_cu->from_debug_types) | |
2226 | info_ptr += 8 /*signature*/ + cu.header.offset_size; | |
2227 | init_cu_die_reader (&reader_specs, &cu); | |
e8e80198 MS |
2228 | read_full_die (&reader_specs, &comp_unit_die, info_ptr, |
2229 | &has_children); | |
9291a0cd | 2230 | |
7b9f3c50 DE |
2231 | lh = NULL; |
2232 | slot = NULL; | |
2233 | line_offset = 0; | |
9291a0cd TT |
2234 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, &cu); |
2235 | if (attr) | |
2236 | { | |
7b9f3c50 DE |
2237 | struct quick_file_names find_entry; |
2238 | ||
2239 | line_offset = DW_UNSND (attr); | |
2240 | ||
2241 | /* We may have already read in this line header (TU line header sharing). | |
2242 | If we have we're done. */ | |
2243 | find_entry.offset = line_offset; | |
2244 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, | |
2245 | &find_entry, INSERT); | |
2246 | if (*slot != NULL) | |
2247 | { | |
2248 | do_cleanups (cleanups); | |
2249 | this_cu->v.quick->file_names = *slot; | |
2250 | return *slot; | |
2251 | } | |
2252 | ||
9291a0cd TT |
2253 | lh = dwarf_decode_line_header (line_offset, abfd, &cu); |
2254 | } | |
2255 | if (lh == NULL) | |
2256 | { | |
2257 | do_cleanups (cleanups); | |
7b9f3c50 DE |
2258 | this_cu->v.quick->no_file_data = 1; |
2259 | return NULL; | |
9291a0cd TT |
2260 | } |
2261 | ||
7b9f3c50 DE |
2262 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
2263 | qfn->offset = line_offset; | |
2264 | gdb_assert (slot != NULL); | |
2265 | *slot = qfn; | |
9291a0cd | 2266 | |
7b9f3c50 | 2267 | find_file_and_directory (comp_unit_die, &cu, &name, &comp_dir); |
9291a0cd | 2268 | |
7b9f3c50 DE |
2269 | qfn->num_file_names = lh->num_file_names; |
2270 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
2271 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 2272 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
2273 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
2274 | qfn->real_names = NULL; | |
9291a0cd | 2275 | |
7b9f3c50 | 2276 | free_line_header (lh); |
9291a0cd | 2277 | do_cleanups (cleanups); |
7b9f3c50 DE |
2278 | |
2279 | this_cu->v.quick->file_names = qfn; | |
2280 | return qfn; | |
9291a0cd TT |
2281 | } |
2282 | ||
2283 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 2284 | real path for a given file name from the line table. */ |
2fdf6df6 | 2285 | |
9291a0cd | 2286 | static const char * |
7b9f3c50 DE |
2287 | dw2_get_real_path (struct objfile *objfile, |
2288 | struct quick_file_names *qfn, int index) | |
9291a0cd | 2289 | { |
7b9f3c50 DE |
2290 | if (qfn->real_names == NULL) |
2291 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2292 | qfn->num_file_names, sizeof (char *)); | |
9291a0cd | 2293 | |
7b9f3c50 DE |
2294 | if (qfn->real_names[index] == NULL) |
2295 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 2296 | |
7b9f3c50 | 2297 | return qfn->real_names[index]; |
9291a0cd TT |
2298 | } |
2299 | ||
2300 | static struct symtab * | |
2301 | dw2_find_last_source_symtab (struct objfile *objfile) | |
2302 | { | |
2303 | int index; | |
ae2de4f8 | 2304 | |
9291a0cd TT |
2305 | dw2_setup (objfile); |
2306 | index = dwarf2_per_objfile->n_comp_units - 1; | |
1fd400ff | 2307 | return dw2_instantiate_symtab (objfile, dw2_get_cu (index)); |
9291a0cd TT |
2308 | } |
2309 | ||
7b9f3c50 DE |
2310 | /* Traversal function for dw2_forget_cached_source_info. */ |
2311 | ||
2312 | static int | |
2313 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 2314 | { |
7b9f3c50 | 2315 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 2316 | |
7b9f3c50 | 2317 | if (file_data->real_names) |
9291a0cd | 2318 | { |
7b9f3c50 | 2319 | int i; |
9291a0cd | 2320 | |
7b9f3c50 | 2321 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 2322 | { |
7b9f3c50 DE |
2323 | xfree ((void*) file_data->real_names[i]); |
2324 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
2325 | } |
2326 | } | |
7b9f3c50 DE |
2327 | |
2328 | return 1; | |
2329 | } | |
2330 | ||
2331 | static void | |
2332 | dw2_forget_cached_source_info (struct objfile *objfile) | |
2333 | { | |
2334 | dw2_setup (objfile); | |
2335 | ||
2336 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
2337 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
2338 | } |
2339 | ||
2340 | static int | |
2341 | dw2_lookup_symtab (struct objfile *objfile, const char *name, | |
2342 | const char *full_path, const char *real_path, | |
2343 | struct symtab **result) | |
2344 | { | |
2345 | int i; | |
2346 | int check_basename = lbasename (name) == name; | |
2347 | struct dwarf2_per_cu_data *base_cu = NULL; | |
2348 | ||
2349 | dw2_setup (objfile); | |
ae2de4f8 | 2350 | |
1fd400ff TT |
2351 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2352 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2353 | { |
2354 | int j; | |
e254ef6a | 2355 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2356 | struct quick_file_names *file_data; |
9291a0cd | 2357 | |
e254ef6a | 2358 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2359 | continue; |
2360 | ||
7b9f3c50 DE |
2361 | file_data = dw2_get_file_names (objfile, per_cu); |
2362 | if (file_data == NULL) | |
9291a0cd TT |
2363 | continue; |
2364 | ||
7b9f3c50 | 2365 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2366 | { |
7b9f3c50 | 2367 | const char *this_name = file_data->file_names[j]; |
9291a0cd TT |
2368 | |
2369 | if (FILENAME_CMP (name, this_name) == 0) | |
2370 | { | |
e254ef6a | 2371 | *result = dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2372 | return 1; |
2373 | } | |
2374 | ||
2375 | if (check_basename && ! base_cu | |
2376 | && FILENAME_CMP (lbasename (this_name), name) == 0) | |
e254ef6a | 2377 | base_cu = per_cu; |
9291a0cd TT |
2378 | |
2379 | if (full_path != NULL) | |
2380 | { | |
7b9f3c50 DE |
2381 | const char *this_real_name = dw2_get_real_path (objfile, |
2382 | file_data, j); | |
9291a0cd | 2383 | |
7b9f3c50 DE |
2384 | if (this_real_name != NULL |
2385 | && FILENAME_CMP (full_path, this_real_name) == 0) | |
9291a0cd | 2386 | { |
e254ef6a | 2387 | *result = dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2388 | return 1; |
2389 | } | |
2390 | } | |
2391 | ||
2392 | if (real_path != NULL) | |
2393 | { | |
7b9f3c50 DE |
2394 | const char *this_real_name = dw2_get_real_path (objfile, |
2395 | file_data, j); | |
9291a0cd | 2396 | |
7b9f3c50 DE |
2397 | if (this_real_name != NULL |
2398 | && FILENAME_CMP (real_path, this_real_name) == 0) | |
9291a0cd | 2399 | { |
74dd2ca6 DE |
2400 | *result = dw2_instantiate_symtab (objfile, per_cu); |
2401 | return 1; | |
9291a0cd TT |
2402 | } |
2403 | } | |
2404 | } | |
2405 | } | |
2406 | ||
2407 | if (base_cu) | |
2408 | { | |
2409 | *result = dw2_instantiate_symtab (objfile, base_cu); | |
2410 | return 1; | |
2411 | } | |
2412 | ||
2413 | return 0; | |
2414 | } | |
2415 | ||
2416 | static struct symtab * | |
2417 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
2418 | const char *name, domain_enum domain) | |
2419 | { | |
774b6a14 | 2420 | /* We do all the work in the pre_expand_symtabs_matching hook |
9291a0cd TT |
2421 | instead. */ |
2422 | return NULL; | |
2423 | } | |
2424 | ||
2425 | /* A helper function that expands all symtabs that hold an object | |
2426 | named NAME. */ | |
2fdf6df6 | 2427 | |
9291a0cd TT |
2428 | static void |
2429 | dw2_do_expand_symtabs_matching (struct objfile *objfile, const char *name) | |
2430 | { | |
2431 | dw2_setup (objfile); | |
2432 | ||
ae2de4f8 | 2433 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd TT |
2434 | if (dwarf2_per_objfile->index_table) |
2435 | { | |
2436 | offset_type *vec; | |
2437 | ||
2438 | if (find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2439 | name, &vec)) | |
2440 | { | |
2441 | offset_type i, len = MAYBE_SWAP (*vec); | |
2442 | for (i = 0; i < len; ++i) | |
2443 | { | |
2444 | offset_type cu_index = MAYBE_SWAP (vec[i + 1]); | |
e254ef6a | 2445 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (cu_index); |
1fd400ff | 2446 | |
e254ef6a | 2447 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2448 | } |
2449 | } | |
2450 | } | |
2451 | } | |
2452 | ||
774b6a14 TT |
2453 | static void |
2454 | dw2_pre_expand_symtabs_matching (struct objfile *objfile, | |
8903c50d | 2455 | enum block_enum block_kind, const char *name, |
774b6a14 | 2456 | domain_enum domain) |
9291a0cd | 2457 | { |
774b6a14 | 2458 | dw2_do_expand_symtabs_matching (objfile, name); |
9291a0cd TT |
2459 | } |
2460 | ||
2461 | static void | |
2462 | dw2_print_stats (struct objfile *objfile) | |
2463 | { | |
2464 | int i, count; | |
2465 | ||
2466 | dw2_setup (objfile); | |
2467 | count = 0; | |
1fd400ff TT |
2468 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2469 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2470 | { |
e254ef6a | 2471 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2472 | |
e254ef6a | 2473 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
2474 | ++count; |
2475 | } | |
2476 | printf_filtered (_(" Number of unread CUs: %d\n"), count); | |
2477 | } | |
2478 | ||
2479 | static void | |
2480 | dw2_dump (struct objfile *objfile) | |
2481 | { | |
2482 | /* Nothing worth printing. */ | |
2483 | } | |
2484 | ||
2485 | static void | |
2486 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
2487 | struct section_offsets *delta) | |
2488 | { | |
2489 | /* There's nothing to relocate here. */ | |
2490 | } | |
2491 | ||
2492 | static void | |
2493 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
2494 | const char *func_name) | |
2495 | { | |
2496 | dw2_do_expand_symtabs_matching (objfile, func_name); | |
2497 | } | |
2498 | ||
2499 | static void | |
2500 | dw2_expand_all_symtabs (struct objfile *objfile) | |
2501 | { | |
2502 | int i; | |
2503 | ||
2504 | dw2_setup (objfile); | |
1fd400ff TT |
2505 | |
2506 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2507 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2508 | { |
e254ef6a | 2509 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2510 | |
e254ef6a | 2511 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2512 | } |
2513 | } | |
2514 | ||
2515 | static void | |
2516 | dw2_expand_symtabs_with_filename (struct objfile *objfile, | |
2517 | const char *filename) | |
2518 | { | |
2519 | int i; | |
2520 | ||
2521 | dw2_setup (objfile); | |
d4637a04 DE |
2522 | |
2523 | /* We don't need to consider type units here. | |
2524 | This is only called for examining code, e.g. expand_line_sal. | |
2525 | There can be an order of magnitude (or more) more type units | |
2526 | than comp units, and we avoid them if we can. */ | |
2527 | ||
2528 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
2529 | { |
2530 | int j; | |
e254ef6a | 2531 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2532 | struct quick_file_names *file_data; |
9291a0cd | 2533 | |
e254ef6a | 2534 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2535 | continue; |
2536 | ||
7b9f3c50 DE |
2537 | file_data = dw2_get_file_names (objfile, per_cu); |
2538 | if (file_data == NULL) | |
9291a0cd TT |
2539 | continue; |
2540 | ||
7b9f3c50 | 2541 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2542 | { |
7b9f3c50 | 2543 | const char *this_name = file_data->file_names[j]; |
1ef75ecc | 2544 | if (FILENAME_CMP (this_name, filename) == 0) |
9291a0cd | 2545 | { |
e254ef6a | 2546 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2547 | break; |
2548 | } | |
2549 | } | |
2550 | } | |
2551 | } | |
2552 | ||
dd786858 | 2553 | static const char * |
9291a0cd TT |
2554 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
2555 | { | |
e254ef6a | 2556 | struct dwarf2_per_cu_data *per_cu; |
9291a0cd | 2557 | offset_type *vec; |
7b9f3c50 | 2558 | struct quick_file_names *file_data; |
9291a0cd TT |
2559 | |
2560 | dw2_setup (objfile); | |
2561 | ||
ae2de4f8 | 2562 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd TT |
2563 | if (!dwarf2_per_objfile->index_table) |
2564 | return NULL; | |
2565 | ||
2566 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2567 | name, &vec)) | |
2568 | return NULL; | |
2569 | ||
2570 | /* Note that this just looks at the very first one named NAME -- but | |
2571 | actually we are looking for a function. find_main_filename | |
2572 | should be rewritten so that it doesn't require a custom hook. It | |
2573 | could just use the ordinary symbol tables. */ | |
2574 | /* vec[0] is the length, which must always be >0. */ | |
e254ef6a | 2575 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[1])); |
9291a0cd | 2576 | |
7b9f3c50 DE |
2577 | file_data = dw2_get_file_names (objfile, per_cu); |
2578 | if (file_data == NULL) | |
9291a0cd TT |
2579 | return NULL; |
2580 | ||
7b9f3c50 | 2581 | return file_data->file_names[file_data->num_file_names - 1]; |
9291a0cd TT |
2582 | } |
2583 | ||
2584 | static void | |
40658b94 PH |
2585 | dw2_map_matching_symbols (const char * name, domain_enum namespace, |
2586 | struct objfile *objfile, int global, | |
2587 | int (*callback) (struct block *, | |
2588 | struct symbol *, void *), | |
2edb89d3 JK |
2589 | void *data, symbol_compare_ftype *match, |
2590 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 2591 | { |
40658b94 | 2592 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
2593 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
2594 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
2595 | } |
2596 | ||
2597 | static void | |
2598 | dw2_expand_symtabs_matching (struct objfile *objfile, | |
2599 | int (*file_matcher) (const char *, void *), | |
2600 | int (*name_matcher) (const char *, void *), | |
8903c50d | 2601 | enum search_domain kind, |
9291a0cd TT |
2602 | void *data) |
2603 | { | |
2604 | int i; | |
2605 | offset_type iter; | |
4b5246aa | 2606 | struct mapped_index *index; |
9291a0cd TT |
2607 | |
2608 | dw2_setup (objfile); | |
ae2de4f8 DE |
2609 | |
2610 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
2611 | if (!dwarf2_per_objfile->index_table) |
2612 | return; | |
4b5246aa | 2613 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 2614 | |
7b08b9eb JK |
2615 | if (file_matcher != NULL) |
2616 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2617 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
2618 | { | |
2619 | int j; | |
2620 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
2621 | struct quick_file_names *file_data; | |
2622 | ||
2623 | per_cu->v.quick->mark = 0; | |
2624 | if (per_cu->v.quick->symtab) | |
2625 | continue; | |
2626 | ||
2627 | file_data = dw2_get_file_names (objfile, per_cu); | |
2628 | if (file_data == NULL) | |
2629 | continue; | |
2630 | ||
2631 | for (j = 0; j < file_data->num_file_names; ++j) | |
2632 | { | |
2633 | if (file_matcher (file_data->file_names[j], data)) | |
2634 | { | |
2635 | per_cu->v.quick->mark = 1; | |
2636 | break; | |
2637 | } | |
2638 | } | |
2639 | } | |
9291a0cd | 2640 | |
3876f04e | 2641 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
2642 | { |
2643 | offset_type idx = 2 * iter; | |
2644 | const char *name; | |
2645 | offset_type *vec, vec_len, vec_idx; | |
2646 | ||
3876f04e | 2647 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
2648 | continue; |
2649 | ||
3876f04e | 2650 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd TT |
2651 | |
2652 | if (! (*name_matcher) (name, data)) | |
2653 | continue; | |
2654 | ||
2655 | /* The name was matched, now expand corresponding CUs that were | |
2656 | marked. */ | |
4b5246aa | 2657 | vec = (offset_type *) (index->constant_pool |
3876f04e | 2658 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
2659 | vec_len = MAYBE_SWAP (vec[0]); |
2660 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
2661 | { | |
e254ef6a | 2662 | struct dwarf2_per_cu_data *per_cu; |
1fd400ff | 2663 | |
e254ef6a | 2664 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[vec_idx + 1])); |
7b08b9eb | 2665 | if (file_matcher == NULL || per_cu->v.quick->mark) |
e254ef6a | 2666 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2667 | } |
2668 | } | |
2669 | } | |
2670 | ||
2671 | static struct symtab * | |
2672 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
2673 | struct minimal_symbol *msymbol, | |
2674 | CORE_ADDR pc, | |
2675 | struct obj_section *section, | |
2676 | int warn_if_readin) | |
2677 | { | |
2678 | struct dwarf2_per_cu_data *data; | |
2679 | ||
2680 | dw2_setup (objfile); | |
2681 | ||
2682 | if (!objfile->psymtabs_addrmap) | |
2683 | return NULL; | |
2684 | ||
2685 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
2686 | if (!data) | |
2687 | return NULL; | |
2688 | ||
2689 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 2690 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
2691 | paddress (get_objfile_arch (objfile), pc)); |
2692 | ||
2693 | return dw2_instantiate_symtab (objfile, data); | |
2694 | } | |
2695 | ||
9291a0cd TT |
2696 | static void |
2697 | dw2_map_symbol_filenames (struct objfile *objfile, | |
2698 | void (*fun) (const char *, const char *, void *), | |
2699 | void *data) | |
2700 | { | |
2701 | int i; | |
2702 | ||
2703 | dw2_setup (objfile); | |
ae2de4f8 | 2704 | |
1fd400ff TT |
2705 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2706 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2707 | { |
2708 | int j; | |
e254ef6a | 2709 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2710 | struct quick_file_names *file_data; |
9291a0cd | 2711 | |
e254ef6a | 2712 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2713 | continue; |
2714 | ||
7b9f3c50 DE |
2715 | file_data = dw2_get_file_names (objfile, per_cu); |
2716 | if (file_data == NULL) | |
9291a0cd TT |
2717 | continue; |
2718 | ||
7b9f3c50 | 2719 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2720 | { |
7b9f3c50 DE |
2721 | const char *this_real_name = dw2_get_real_path (objfile, file_data, |
2722 | j); | |
2723 | (*fun) (file_data->file_names[j], this_real_name, data); | |
9291a0cd TT |
2724 | } |
2725 | } | |
2726 | } | |
2727 | ||
2728 | static int | |
2729 | dw2_has_symbols (struct objfile *objfile) | |
2730 | { | |
2731 | return 1; | |
2732 | } | |
2733 | ||
2734 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
2735 | { | |
2736 | dw2_has_symbols, | |
2737 | dw2_find_last_source_symtab, | |
2738 | dw2_forget_cached_source_info, | |
2739 | dw2_lookup_symtab, | |
2740 | dw2_lookup_symbol, | |
774b6a14 | 2741 | dw2_pre_expand_symtabs_matching, |
9291a0cd TT |
2742 | dw2_print_stats, |
2743 | dw2_dump, | |
2744 | dw2_relocate, | |
2745 | dw2_expand_symtabs_for_function, | |
2746 | dw2_expand_all_symtabs, | |
2747 | dw2_expand_symtabs_with_filename, | |
2748 | dw2_find_symbol_file, | |
40658b94 | 2749 | dw2_map_matching_symbols, |
9291a0cd TT |
2750 | dw2_expand_symtabs_matching, |
2751 | dw2_find_pc_sect_symtab, | |
9291a0cd TT |
2752 | dw2_map_symbol_filenames |
2753 | }; | |
2754 | ||
2755 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
2756 | file will use psymtabs, or 1 if using the GNU index. */ | |
2757 | ||
2758 | int | |
2759 | dwarf2_initialize_objfile (struct objfile *objfile) | |
2760 | { | |
2761 | /* If we're about to read full symbols, don't bother with the | |
2762 | indices. In this case we also don't care if some other debug | |
2763 | format is making psymtabs, because they are all about to be | |
2764 | expanded anyway. */ | |
2765 | if ((objfile->flags & OBJF_READNOW)) | |
2766 | { | |
2767 | int i; | |
2768 | ||
2769 | dwarf2_per_objfile->using_index = 1; | |
2770 | create_all_comp_units (objfile); | |
1fd400ff | 2771 | create_debug_types_hash_table (objfile); |
7b9f3c50 DE |
2772 | dwarf2_per_objfile->quick_file_names_table = |
2773 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 2774 | |
1fd400ff TT |
2775 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2776 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2777 | { |
e254ef6a | 2778 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2779 | |
e254ef6a DE |
2780 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2781 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
2782 | } |
2783 | ||
2784 | /* Return 1 so that gdb sees the "quick" functions. However, | |
2785 | these functions will be no-ops because we will have expanded | |
2786 | all symtabs. */ | |
2787 | return 1; | |
2788 | } | |
2789 | ||
2790 | if (dwarf2_read_index (objfile)) | |
2791 | return 1; | |
2792 | ||
9291a0cd TT |
2793 | return 0; |
2794 | } | |
2795 | ||
2796 | \f | |
2797 | ||
dce234bc PP |
2798 | /* Build a partial symbol table. */ |
2799 | ||
2800 | void | |
f29dff0a | 2801 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 2802 | { |
f29dff0a | 2803 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
2804 | { |
2805 | init_psymbol_list (objfile, 1024); | |
2806 | } | |
2807 | ||
d146bf1e | 2808 | dwarf2_build_psymtabs_hard (objfile); |
c906108c | 2809 | } |
c906108c | 2810 | |
45452591 DE |
2811 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
2812 | ||
2813 | static inline int | |
2814 | offset_in_cu_p (const struct comp_unit_head *cu_header, unsigned int offset) | |
2815 | { | |
2816 | unsigned int bottom = cu_header->offset; | |
2817 | unsigned int top = (cu_header->offset | |
2818 | + cu_header->length | |
2819 | + cu_header->initial_length_size); | |
9a619af0 | 2820 | |
45452591 DE |
2821 | return (offset >= bottom && offset < top); |
2822 | } | |
2823 | ||
93311388 DE |
2824 | /* Read in the comp unit header information from the debug_info at info_ptr. |
2825 | NOTE: This leaves members offset, first_die_offset to be filled in | |
2826 | by the caller. */ | |
107d2387 | 2827 | |
fe1b8b76 | 2828 | static gdb_byte * |
107d2387 | 2829 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 2830 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
2831 | { |
2832 | int signed_addr; | |
891d2f0b | 2833 | unsigned int bytes_read; |
c764a876 DE |
2834 | |
2835 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
2836 | cu_header->initial_length_size = bytes_read; | |
2837 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 2838 | info_ptr += bytes_read; |
107d2387 AC |
2839 | cu_header->version = read_2_bytes (abfd, info_ptr); |
2840 | info_ptr += 2; | |
613e1657 | 2841 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
c764a876 | 2842 | &bytes_read); |
613e1657 | 2843 | info_ptr += bytes_read; |
107d2387 AC |
2844 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
2845 | info_ptr += 1; | |
2846 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
2847 | if (signed_addr < 0) | |
8e65ff28 | 2848 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2849 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 2850 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 2851 | |
107d2387 AC |
2852 | return info_ptr; |
2853 | } | |
2854 | ||
fe1b8b76 JB |
2855 | static gdb_byte * |
2856 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
93311388 | 2857 | gdb_byte *buffer, unsigned int buffer_size, |
72bf9492 DJ |
2858 | bfd *abfd) |
2859 | { | |
fe1b8b76 | 2860 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
2861 | |
2862 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
2863 | ||
2dc7f7b3 | 2864 | if (header->version != 2 && header->version != 3 && header->version != 4) |
8a3fe4f8 | 2865 | error (_("Dwarf Error: wrong version in compilation unit header " |
2dc7f7b3 TT |
2866 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, |
2867 | bfd_get_filename (abfd)); | |
72bf9492 | 2868 | |
9e0ac564 TT |
2869 | if (header->abbrev_offset |
2870 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, | |
2871 | &dwarf2_per_objfile->abbrev)) | |
8a3fe4f8 AC |
2872 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
2873 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 | 2874 | (long) header->abbrev_offset, |
93311388 | 2875 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
2876 | bfd_get_filename (abfd)); |
2877 | ||
2878 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
93311388 | 2879 | > buffer + buffer_size) |
8a3fe4f8 AC |
2880 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
2881 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 | 2882 | (long) header->length, |
93311388 | 2883 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
2884 | bfd_get_filename (abfd)); |
2885 | ||
2886 | return info_ptr; | |
2887 | } | |
2888 | ||
348e048f DE |
2889 | /* Read in the types comp unit header information from .debug_types entry at |
2890 | types_ptr. The result is a pointer to one past the end of the header. */ | |
2891 | ||
2892 | static gdb_byte * | |
2893 | read_type_comp_unit_head (struct comp_unit_head *cu_header, | |
2894 | ULONGEST *signature, | |
2895 | gdb_byte *types_ptr, bfd *abfd) | |
2896 | { | |
348e048f DE |
2897 | gdb_byte *initial_types_ptr = types_ptr; |
2898 | ||
6e70227d | 2899 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
fa238c03 | 2900 | &dwarf2_per_objfile->types); |
348e048f DE |
2901 | cu_header->offset = types_ptr - dwarf2_per_objfile->types.buffer; |
2902 | ||
2903 | types_ptr = read_comp_unit_head (cu_header, types_ptr, abfd); | |
2904 | ||
2905 | *signature = read_8_bytes (abfd, types_ptr); | |
2906 | types_ptr += 8; | |
2907 | types_ptr += cu_header->offset_size; | |
2908 | cu_header->first_die_offset = types_ptr - initial_types_ptr; | |
2909 | ||
2910 | return types_ptr; | |
2911 | } | |
2912 | ||
aaa75496 JB |
2913 | /* Allocate a new partial symtab for file named NAME and mark this new |
2914 | partial symtab as being an include of PST. */ | |
2915 | ||
2916 | static void | |
2917 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
2918 | struct objfile *objfile) | |
2919 | { | |
2920 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
2921 | ||
2922 | subpst->section_offsets = pst->section_offsets; | |
2923 | subpst->textlow = 0; | |
2924 | subpst->texthigh = 0; | |
2925 | ||
2926 | subpst->dependencies = (struct partial_symtab **) | |
2927 | obstack_alloc (&objfile->objfile_obstack, | |
2928 | sizeof (struct partial_symtab *)); | |
2929 | subpst->dependencies[0] = pst; | |
2930 | subpst->number_of_dependencies = 1; | |
2931 | ||
2932 | subpst->globals_offset = 0; | |
2933 | subpst->n_global_syms = 0; | |
2934 | subpst->statics_offset = 0; | |
2935 | subpst->n_static_syms = 0; | |
2936 | subpst->symtab = NULL; | |
2937 | subpst->read_symtab = pst->read_symtab; | |
2938 | subpst->readin = 0; | |
2939 | ||
2940 | /* No private part is necessary for include psymtabs. This property | |
2941 | can be used to differentiate between such include psymtabs and | |
10b3939b | 2942 | the regular ones. */ |
58a9656e | 2943 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
2944 | } |
2945 | ||
2946 | /* Read the Line Number Program data and extract the list of files | |
2947 | included by the source file represented by PST. Build an include | |
d85a05f0 | 2948 | partial symtab for each of these included files. */ |
aaa75496 JB |
2949 | |
2950 | static void | |
2951 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
d85a05f0 | 2952 | struct die_info *die, |
aaa75496 JB |
2953 | struct partial_symtab *pst) |
2954 | { | |
2955 | struct objfile *objfile = cu->objfile; | |
2956 | bfd *abfd = objfile->obfd; | |
d85a05f0 DJ |
2957 | struct line_header *lh = NULL; |
2958 | struct attribute *attr; | |
aaa75496 | 2959 | |
d85a05f0 DJ |
2960 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
2961 | if (attr) | |
2962 | { | |
2963 | unsigned int line_offset = DW_UNSND (attr); | |
9a619af0 | 2964 | |
d85a05f0 DJ |
2965 | lh = dwarf_decode_line_header (line_offset, abfd, cu); |
2966 | } | |
aaa75496 JB |
2967 | if (lh == NULL) |
2968 | return; /* No linetable, so no includes. */ | |
2969 | ||
c6da4cef DE |
2970 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
2971 | dwarf_decode_lines (lh, pst->dirname, abfd, cu, pst); | |
aaa75496 JB |
2972 | |
2973 | free_line_header (lh); | |
2974 | } | |
2975 | ||
348e048f DE |
2976 | static hashval_t |
2977 | hash_type_signature (const void *item) | |
2978 | { | |
2979 | const struct signatured_type *type_sig = item; | |
9a619af0 | 2980 | |
348e048f DE |
2981 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
2982 | return type_sig->signature; | |
2983 | } | |
2984 | ||
2985 | static int | |
2986 | eq_type_signature (const void *item_lhs, const void *item_rhs) | |
2987 | { | |
2988 | const struct signatured_type *lhs = item_lhs; | |
2989 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 2990 | |
348e048f DE |
2991 | return lhs->signature == rhs->signature; |
2992 | } | |
2993 | ||
1fd400ff TT |
2994 | /* Allocate a hash table for signatured types. */ |
2995 | ||
2996 | static htab_t | |
673bfd45 | 2997 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
2998 | { |
2999 | return htab_create_alloc_ex (41, | |
3000 | hash_type_signature, | |
3001 | eq_type_signature, | |
3002 | NULL, | |
3003 | &objfile->objfile_obstack, | |
3004 | hashtab_obstack_allocate, | |
3005 | dummy_obstack_deallocate); | |
3006 | } | |
3007 | ||
3008 | /* A helper function to add a signatured type CU to a list. */ | |
3009 | ||
3010 | static int | |
3011 | add_signatured_type_cu_to_list (void **slot, void *datum) | |
3012 | { | |
3013 | struct signatured_type *sigt = *slot; | |
3014 | struct dwarf2_per_cu_data ***datap = datum; | |
3015 | ||
3016 | **datap = &sigt->per_cu; | |
3017 | ++*datap; | |
3018 | ||
3019 | return 1; | |
3020 | } | |
3021 | ||
348e048f DE |
3022 | /* Create the hash table of all entries in the .debug_types section. |
3023 | The result is zero if there is an error (e.g. missing .debug_types section), | |
3024 | otherwise non-zero. */ | |
3025 | ||
3026 | static int | |
3027 | create_debug_types_hash_table (struct objfile *objfile) | |
3028 | { | |
be391dca | 3029 | gdb_byte *info_ptr; |
348e048f | 3030 | htab_t types_htab; |
1fd400ff | 3031 | struct dwarf2_per_cu_data **iter; |
348e048f | 3032 | |
be391dca TT |
3033 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
3034 | info_ptr = dwarf2_per_objfile->types.buffer; | |
3035 | ||
348e048f DE |
3036 | if (info_ptr == NULL) |
3037 | { | |
3038 | dwarf2_per_objfile->signatured_types = NULL; | |
3039 | return 0; | |
3040 | } | |
3041 | ||
673bfd45 | 3042 | types_htab = allocate_signatured_type_table (objfile); |
348e048f DE |
3043 | |
3044 | if (dwarf2_die_debug) | |
3045 | fprintf_unfiltered (gdb_stdlog, "Signatured types:\n"); | |
3046 | ||
3e43a32a MS |
3047 | while (info_ptr < dwarf2_per_objfile->types.buffer |
3048 | + dwarf2_per_objfile->types.size) | |
348e048f DE |
3049 | { |
3050 | unsigned int offset; | |
3051 | unsigned int offset_size; | |
3052 | unsigned int type_offset; | |
3053 | unsigned int length, initial_length_size; | |
3054 | unsigned short version; | |
3055 | ULONGEST signature; | |
3056 | struct signatured_type *type_sig; | |
3057 | void **slot; | |
3058 | gdb_byte *ptr = info_ptr; | |
3059 | ||
3060 | offset = ptr - dwarf2_per_objfile->types.buffer; | |
3061 | ||
3062 | /* We need to read the type's signature in order to build the hash | |
3063 | table, but we don't need to read anything else just yet. */ | |
3064 | ||
3065 | /* Sanity check to ensure entire cu is present. */ | |
3066 | length = read_initial_length (objfile->obfd, ptr, &initial_length_size); | |
3067 | if (ptr + length + initial_length_size | |
3068 | > dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size) | |
3069 | { | |
3070 | complaint (&symfile_complaints, | |
3e43a32a MS |
3071 | _("debug type entry runs off end " |
3072 | "of `.debug_types' section, ignored")); | |
348e048f DE |
3073 | break; |
3074 | } | |
3075 | ||
3076 | offset_size = initial_length_size == 4 ? 4 : 8; | |
3077 | ptr += initial_length_size; | |
3078 | version = bfd_get_16 (objfile->obfd, ptr); | |
3079 | ptr += 2; | |
3080 | ptr += offset_size; /* abbrev offset */ | |
3081 | ptr += 1; /* address size */ | |
3082 | signature = bfd_get_64 (objfile->obfd, ptr); | |
3083 | ptr += 8; | |
3084 | type_offset = read_offset_1 (objfile->obfd, ptr, offset_size); | |
3085 | ||
3086 | type_sig = obstack_alloc (&objfile->objfile_obstack, sizeof (*type_sig)); | |
3087 | memset (type_sig, 0, sizeof (*type_sig)); | |
3088 | type_sig->signature = signature; | |
3089 | type_sig->offset = offset; | |
3090 | type_sig->type_offset = type_offset; | |
ca1f3406 | 3091 | type_sig->per_cu.objfile = objfile; |
1fd400ff | 3092 | type_sig->per_cu.from_debug_types = 1; |
348e048f DE |
3093 | |
3094 | slot = htab_find_slot (types_htab, type_sig, INSERT); | |
3095 | gdb_assert (slot != NULL); | |
3096 | *slot = type_sig; | |
3097 | ||
3098 | if (dwarf2_die_debug) | |
3099 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", | |
3100 | offset, phex (signature, sizeof (signature))); | |
3101 | ||
3102 | info_ptr = info_ptr + initial_length_size + length; | |
3103 | } | |
3104 | ||
3105 | dwarf2_per_objfile->signatured_types = types_htab; | |
3106 | ||
1fd400ff TT |
3107 | dwarf2_per_objfile->n_type_comp_units = htab_elements (types_htab); |
3108 | dwarf2_per_objfile->type_comp_units | |
3109 | = obstack_alloc (&objfile->objfile_obstack, | |
3110 | dwarf2_per_objfile->n_type_comp_units | |
3111 | * sizeof (struct dwarf2_per_cu_data *)); | |
3112 | iter = &dwarf2_per_objfile->type_comp_units[0]; | |
3113 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_list, &iter); | |
3114 | gdb_assert (iter - &dwarf2_per_objfile->type_comp_units[0] | |
3115 | == dwarf2_per_objfile->n_type_comp_units); | |
3116 | ||
348e048f DE |
3117 | return 1; |
3118 | } | |
3119 | ||
3120 | /* Lookup a signature based type. | |
3121 | Returns NULL if SIG is not present in the table. */ | |
3122 | ||
3123 | static struct signatured_type * | |
3124 | lookup_signatured_type (struct objfile *objfile, ULONGEST sig) | |
3125 | { | |
3126 | struct signatured_type find_entry, *entry; | |
3127 | ||
3128 | if (dwarf2_per_objfile->signatured_types == NULL) | |
3129 | { | |
3130 | complaint (&symfile_complaints, | |
55f1336d | 3131 | _("missing `.debug_types' section for DW_FORM_ref_sig8 die")); |
348e048f DE |
3132 | return 0; |
3133 | } | |
3134 | ||
3135 | find_entry.signature = sig; | |
3136 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
3137 | return entry; | |
3138 | } | |
3139 | ||
d85a05f0 DJ |
3140 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
3141 | ||
3142 | static void | |
3143 | init_cu_die_reader (struct die_reader_specs *reader, | |
3144 | struct dwarf2_cu *cu) | |
3145 | { | |
3146 | reader->abfd = cu->objfile->obfd; | |
3147 | reader->cu = cu; | |
3148 | if (cu->per_cu->from_debug_types) | |
be391dca TT |
3149 | { |
3150 | gdb_assert (dwarf2_per_objfile->types.readin); | |
3151 | reader->buffer = dwarf2_per_objfile->types.buffer; | |
3152 | } | |
d85a05f0 | 3153 | else |
be391dca TT |
3154 | { |
3155 | gdb_assert (dwarf2_per_objfile->info.readin); | |
3156 | reader->buffer = dwarf2_per_objfile->info.buffer; | |
3157 | } | |
d85a05f0 DJ |
3158 | } |
3159 | ||
3160 | /* Find the base address of the compilation unit for range lists and | |
3161 | location lists. It will normally be specified by DW_AT_low_pc. | |
3162 | In DWARF-3 draft 4, the base address could be overridden by | |
3163 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
3164 | compilation units with discontinuous ranges. */ | |
3165 | ||
3166 | static void | |
3167 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
3168 | { | |
3169 | struct attribute *attr; | |
3170 | ||
3171 | cu->base_known = 0; | |
3172 | cu->base_address = 0; | |
3173 | ||
3174 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
3175 | if (attr) | |
3176 | { | |
3177 | cu->base_address = DW_ADDR (attr); | |
3178 | cu->base_known = 1; | |
3179 | } | |
3180 | else | |
3181 | { | |
3182 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3183 | if (attr) | |
3184 | { | |
3185 | cu->base_address = DW_ADDR (attr); | |
3186 | cu->base_known = 1; | |
3187 | } | |
3188 | } | |
3189 | } | |
3190 | ||
348e048f DE |
3191 | /* Subroutine of process_type_comp_unit and dwarf2_build_psymtabs_hard |
3192 | to combine the common parts. | |
93311388 | 3193 | Process a compilation unit for a psymtab. |
348e048f DE |
3194 | BUFFER is a pointer to the beginning of the dwarf section buffer, |
3195 | either .debug_info or debug_types. | |
93311388 DE |
3196 | INFO_PTR is a pointer to the start of the CU. |
3197 | Returns a pointer to the next CU. */ | |
aaa75496 | 3198 | |
93311388 DE |
3199 | static gdb_byte * |
3200 | process_psymtab_comp_unit (struct objfile *objfile, | |
3201 | struct dwarf2_per_cu_data *this_cu, | |
3202 | gdb_byte *buffer, gdb_byte *info_ptr, | |
3203 | unsigned int buffer_size) | |
c906108c | 3204 | { |
c906108c | 3205 | bfd *abfd = objfile->obfd; |
93311388 | 3206 | gdb_byte *beg_of_comp_unit = info_ptr; |
d85a05f0 | 3207 | struct die_info *comp_unit_die; |
c906108c | 3208 | struct partial_symtab *pst; |
5734ee8b | 3209 | CORE_ADDR baseaddr; |
93311388 DE |
3210 | struct cleanup *back_to_inner; |
3211 | struct dwarf2_cu cu; | |
d85a05f0 DJ |
3212 | int has_children, has_pc_info; |
3213 | struct attribute *attr; | |
d85a05f0 DJ |
3214 | CORE_ADDR best_lowpc = 0, best_highpc = 0; |
3215 | struct die_reader_specs reader_specs; | |
3e2a0cee | 3216 | const char *filename; |
c906108c | 3217 | |
9816fde3 | 3218 | init_one_comp_unit (&cu, objfile); |
93311388 | 3219 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); |
ae038cb0 | 3220 | |
93311388 DE |
3221 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, |
3222 | buffer, buffer_size, | |
3223 | abfd); | |
10b3939b | 3224 | |
93311388 DE |
3225 | /* Complete the cu_header. */ |
3226 | cu.header.offset = beg_of_comp_unit - buffer; | |
3227 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; | |
ff013f42 | 3228 | |
93311388 | 3229 | cu.list_in_scope = &file_symbols; |
af703f96 | 3230 | |
328c9494 DJ |
3231 | /* If this compilation unit was already read in, free the |
3232 | cached copy in order to read it in again. This is | |
3233 | necessary because we skipped some symbols when we first | |
3234 | read in the compilation unit (see load_partial_dies). | |
3235 | This problem could be avoided, but the benefit is | |
3236 | unclear. */ | |
3237 | if (this_cu->cu != NULL) | |
3238 | free_one_cached_comp_unit (this_cu->cu); | |
3239 | ||
3240 | /* Note that this is a pointer to our stack frame, being | |
3241 | added to a global data structure. It will be cleaned up | |
3242 | in free_stack_comp_unit when we finish with this | |
3243 | compilation unit. */ | |
3244 | this_cu->cu = &cu; | |
d85a05f0 DJ |
3245 | cu.per_cu = this_cu; |
3246 | ||
93311388 DE |
3247 | /* Read the abbrevs for this compilation unit into a table. */ |
3248 | dwarf2_read_abbrevs (abfd, &cu); | |
3249 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
af703f96 | 3250 | |
93311388 | 3251 | /* Read the compilation unit die. */ |
348e048f DE |
3252 | if (this_cu->from_debug_types) |
3253 | info_ptr += 8 /*signature*/ + cu.header.offset_size; | |
d85a05f0 DJ |
3254 | init_cu_die_reader (&reader_specs, &cu); |
3255 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
3256 | &has_children); | |
93311388 | 3257 | |
348e048f DE |
3258 | if (this_cu->from_debug_types) |
3259 | { | |
3260 | /* offset,length haven't been set yet for type units. */ | |
3261 | this_cu->offset = cu.header.offset; | |
3262 | this_cu->length = cu.header.length + cu.header.initial_length_size; | |
3263 | } | |
d85a05f0 | 3264 | else if (comp_unit_die->tag == DW_TAG_partial_unit) |
c906108c | 3265 | { |
93311388 DE |
3266 | info_ptr = (beg_of_comp_unit + cu.header.length |
3267 | + cu.header.initial_length_size); | |
3268 | do_cleanups (back_to_inner); | |
3269 | return info_ptr; | |
3270 | } | |
72bf9492 | 3271 | |
9816fde3 | 3272 | prepare_one_comp_unit (&cu, comp_unit_die); |
c906108c | 3273 | |
93311388 | 3274 | /* Allocate a new partial symbol table structure. */ |
d85a05f0 | 3275 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, &cu); |
3e2a0cee TT |
3276 | if (attr == NULL || !DW_STRING (attr)) |
3277 | filename = ""; | |
3278 | else | |
3279 | filename = DW_STRING (attr); | |
93311388 | 3280 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
3e2a0cee | 3281 | filename, |
93311388 DE |
3282 | /* TEXTLOW and TEXTHIGH are set below. */ |
3283 | 0, | |
3284 | objfile->global_psymbols.next, | |
3285 | objfile->static_psymbols.next); | |
72bf9492 | 3286 | |
d85a05f0 DJ |
3287 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, &cu); |
3288 | if (attr != NULL) | |
3289 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 3290 | |
e38df1d0 | 3291 | pst->read_symtab_private = this_cu; |
72bf9492 | 3292 | |
93311388 | 3293 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 3294 | |
0963b4bd | 3295 | /* Store the function that reads in the rest of the symbol table. */ |
93311388 | 3296 | pst->read_symtab = dwarf2_psymtab_to_symtab; |
57349743 | 3297 | |
9291a0cd | 3298 | this_cu->v.psymtab = pst; |
c906108c | 3299 | |
d85a05f0 DJ |
3300 | dwarf2_find_base_address (comp_unit_die, &cu); |
3301 | ||
93311388 DE |
3302 | /* Possibly set the default values of LOWPC and HIGHPC from |
3303 | `DW_AT_ranges'. */ | |
d85a05f0 DJ |
3304 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
3305 | &best_highpc, &cu, pst); | |
3306 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
93311388 DE |
3307 | /* Store the contiguous range if it is not empty; it can be empty for |
3308 | CUs with no code. */ | |
3309 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
3310 | best_lowpc + baseaddr, |
3311 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
3312 | |
3313 | /* Check if comp unit has_children. | |
3314 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 3315 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 3316 | if (has_children) |
93311388 DE |
3317 | { |
3318 | struct partial_die_info *first_die; | |
3319 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 3320 | |
93311388 DE |
3321 | lowpc = ((CORE_ADDR) -1); |
3322 | highpc = ((CORE_ADDR) 0); | |
c906108c | 3323 | |
93311388 | 3324 | first_die = load_partial_dies (abfd, buffer, info_ptr, 1, &cu); |
c906108c | 3325 | |
93311388 | 3326 | scan_partial_symbols (first_die, &lowpc, &highpc, |
d85a05f0 | 3327 | ! has_pc_info, &cu); |
57c22c6c | 3328 | |
93311388 DE |
3329 | /* If we didn't find a lowpc, set it to highpc to avoid |
3330 | complaints from `maint check'. */ | |
3331 | if (lowpc == ((CORE_ADDR) -1)) | |
3332 | lowpc = highpc; | |
10b3939b | 3333 | |
93311388 DE |
3334 | /* If the compilation unit didn't have an explicit address range, |
3335 | then use the information extracted from its child dies. */ | |
d85a05f0 | 3336 | if (! has_pc_info) |
93311388 | 3337 | { |
d85a05f0 DJ |
3338 | best_lowpc = lowpc; |
3339 | best_highpc = highpc; | |
93311388 DE |
3340 | } |
3341 | } | |
d85a05f0 DJ |
3342 | pst->textlow = best_lowpc + baseaddr; |
3343 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 3344 | |
93311388 DE |
3345 | pst->n_global_syms = objfile->global_psymbols.next - |
3346 | (objfile->global_psymbols.list + pst->globals_offset); | |
3347 | pst->n_static_syms = objfile->static_psymbols.next - | |
3348 | (objfile->static_psymbols.list + pst->statics_offset); | |
3349 | sort_pst_symbols (pst); | |
c906108c | 3350 | |
93311388 DE |
3351 | info_ptr = (beg_of_comp_unit + cu.header.length |
3352 | + cu.header.initial_length_size); | |
ae038cb0 | 3353 | |
348e048f DE |
3354 | if (this_cu->from_debug_types) |
3355 | { | |
3356 | /* It's not clear we want to do anything with stmt lists here. | |
3357 | Waiting to see what gcc ultimately does. */ | |
3358 | } | |
d85a05f0 | 3359 | else |
93311388 DE |
3360 | { |
3361 | /* Get the list of files included in the current compilation unit, | |
3362 | and build a psymtab for each of them. */ | |
d85a05f0 | 3363 | dwarf2_build_include_psymtabs (&cu, comp_unit_die, pst); |
93311388 | 3364 | } |
ae038cb0 | 3365 | |
93311388 | 3366 | do_cleanups (back_to_inner); |
ae038cb0 | 3367 | |
93311388 DE |
3368 | return info_ptr; |
3369 | } | |
ff013f42 | 3370 | |
348e048f DE |
3371 | /* Traversal function for htab_traverse_noresize. |
3372 | Process one .debug_types comp-unit. */ | |
3373 | ||
3374 | static int | |
3375 | process_type_comp_unit (void **slot, void *info) | |
3376 | { | |
3377 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
3378 | struct objfile *objfile = (struct objfile *) info; | |
3379 | struct dwarf2_per_cu_data *this_cu; | |
3380 | ||
3381 | this_cu = &entry->per_cu; | |
348e048f | 3382 | |
be391dca | 3383 | gdb_assert (dwarf2_per_objfile->types.readin); |
348e048f DE |
3384 | process_psymtab_comp_unit (objfile, this_cu, |
3385 | dwarf2_per_objfile->types.buffer, | |
3386 | dwarf2_per_objfile->types.buffer + entry->offset, | |
3387 | dwarf2_per_objfile->types.size); | |
3388 | ||
3389 | return 1; | |
3390 | } | |
3391 | ||
3392 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
3393 | Build partial symbol tables for the .debug_types comp-units. */ | |
3394 | ||
3395 | static void | |
3396 | build_type_psymtabs (struct objfile *objfile) | |
3397 | { | |
3398 | if (! create_debug_types_hash_table (objfile)) | |
3399 | return; | |
3400 | ||
3401 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
3402 | process_type_comp_unit, objfile); | |
3403 | } | |
3404 | ||
60606b2c TT |
3405 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
3406 | ||
3407 | static void | |
3408 | psymtabs_addrmap_cleanup (void *o) | |
3409 | { | |
3410 | struct objfile *objfile = o; | |
ec61707d | 3411 | |
60606b2c TT |
3412 | objfile->psymtabs_addrmap = NULL; |
3413 | } | |
3414 | ||
93311388 DE |
3415 | /* Build the partial symbol table by doing a quick pass through the |
3416 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 3417 | |
93311388 | 3418 | static void |
c67a9c90 | 3419 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 3420 | { |
93311388 | 3421 | gdb_byte *info_ptr; |
60606b2c TT |
3422 | struct cleanup *back_to, *addrmap_cleanup; |
3423 | struct obstack temp_obstack; | |
93311388 | 3424 | |
98bfdba5 PA |
3425 | dwarf2_per_objfile->reading_partial_symbols = 1; |
3426 | ||
be391dca | 3427 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
93311388 | 3428 | info_ptr = dwarf2_per_objfile->info.buffer; |
91c24f0a | 3429 | |
93311388 DE |
3430 | /* Any cached compilation units will be linked by the per-objfile |
3431 | read_in_chain. Make sure to free them when we're done. */ | |
3432 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 3433 | |
348e048f DE |
3434 | build_type_psymtabs (objfile); |
3435 | ||
93311388 | 3436 | create_all_comp_units (objfile); |
c906108c | 3437 | |
60606b2c TT |
3438 | /* Create a temporary address map on a temporary obstack. We later |
3439 | copy this to the final obstack. */ | |
3440 | obstack_init (&temp_obstack); | |
3441 | make_cleanup_obstack_free (&temp_obstack); | |
3442 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
3443 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 3444 | |
93311388 DE |
3445 | /* Since the objects we're extracting from .debug_info vary in |
3446 | length, only the individual functions to extract them (like | |
3447 | read_comp_unit_head and load_partial_die) can really know whether | |
3448 | the buffer is large enough to hold another complete object. | |
c906108c | 3449 | |
93311388 DE |
3450 | At the moment, they don't actually check that. If .debug_info |
3451 | holds just one extra byte after the last compilation unit's dies, | |
3452 | then read_comp_unit_head will happily read off the end of the | |
3453 | buffer. read_partial_die is similarly casual. Those functions | |
3454 | should be fixed. | |
c906108c | 3455 | |
93311388 DE |
3456 | For this loop condition, simply checking whether there's any data |
3457 | left at all should be sufficient. */ | |
c906108c | 3458 | |
93311388 DE |
3459 | while (info_ptr < (dwarf2_per_objfile->info.buffer |
3460 | + dwarf2_per_objfile->info.size)) | |
3461 | { | |
3462 | struct dwarf2_per_cu_data *this_cu; | |
dd373385 | 3463 | |
3e43a32a MS |
3464 | this_cu = dwarf2_find_comp_unit (info_ptr |
3465 | - dwarf2_per_objfile->info.buffer, | |
93311388 | 3466 | objfile); |
aaa75496 | 3467 | |
93311388 DE |
3468 | info_ptr = process_psymtab_comp_unit (objfile, this_cu, |
3469 | dwarf2_per_objfile->info.buffer, | |
3470 | info_ptr, | |
3471 | dwarf2_per_objfile->info.size); | |
c906108c | 3472 | } |
ff013f42 JK |
3473 | |
3474 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, | |
3475 | &objfile->objfile_obstack); | |
60606b2c | 3476 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 3477 | |
ae038cb0 DJ |
3478 | do_cleanups (back_to); |
3479 | } | |
3480 | ||
93311388 | 3481 | /* Load the partial DIEs for a secondary CU into memory. */ |
ae038cb0 DJ |
3482 | |
3483 | static void | |
93311388 DE |
3484 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu, |
3485 | struct objfile *objfile) | |
ae038cb0 DJ |
3486 | { |
3487 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 3488 | gdb_byte *info_ptr, *beg_of_comp_unit; |
d85a05f0 | 3489 | struct die_info *comp_unit_die; |
ae038cb0 | 3490 | struct dwarf2_cu *cu; |
1d9ec526 | 3491 | struct cleanup *free_abbrevs_cleanup, *free_cu_cleanup = NULL; |
d85a05f0 DJ |
3492 | int has_children; |
3493 | struct die_reader_specs reader_specs; | |
98bfdba5 | 3494 | int read_cu = 0; |
ae038cb0 | 3495 | |
348e048f DE |
3496 | gdb_assert (! this_cu->from_debug_types); |
3497 | ||
be391dca | 3498 | gdb_assert (dwarf2_per_objfile->info.readin); |
dce234bc | 3499 | info_ptr = dwarf2_per_objfile->info.buffer + this_cu->offset; |
ae038cb0 DJ |
3500 | beg_of_comp_unit = info_ptr; |
3501 | ||
98bfdba5 PA |
3502 | if (this_cu->cu == NULL) |
3503 | { | |
9816fde3 JK |
3504 | cu = xmalloc (sizeof (*cu)); |
3505 | init_one_comp_unit (cu, objfile); | |
ae038cb0 | 3506 | |
98bfdba5 | 3507 | read_cu = 1; |
ae038cb0 | 3508 | |
98bfdba5 PA |
3509 | /* If an error occurs while loading, release our storage. */ |
3510 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
328c9494 | 3511 | |
98bfdba5 PA |
3512 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, |
3513 | dwarf2_per_objfile->info.buffer, | |
3514 | dwarf2_per_objfile->info.size, | |
3515 | abfd); | |
ae038cb0 | 3516 | |
98bfdba5 PA |
3517 | /* Complete the cu_header. */ |
3518 | cu->header.offset = this_cu->offset; | |
3519 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; | |
3520 | ||
3521 | /* Link this compilation unit into the compilation unit tree. */ | |
3522 | this_cu->cu = cu; | |
3523 | cu->per_cu = this_cu; | |
98bfdba5 PA |
3524 | |
3525 | /* Link this CU into read_in_chain. */ | |
3526 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
3527 | dwarf2_per_objfile->read_in_chain = this_cu; | |
3528 | } | |
3529 | else | |
3530 | { | |
3531 | cu = this_cu->cu; | |
3532 | info_ptr += cu->header.first_die_offset; | |
3533 | } | |
ae038cb0 DJ |
3534 | |
3535 | /* Read the abbrevs for this compilation unit into a table. */ | |
98bfdba5 | 3536 | gdb_assert (cu->dwarf2_abbrevs == NULL); |
ae038cb0 | 3537 | dwarf2_read_abbrevs (abfd, cu); |
98bfdba5 | 3538 | free_abbrevs_cleanup = make_cleanup (dwarf2_free_abbrev_table, cu); |
ae038cb0 DJ |
3539 | |
3540 | /* Read the compilation unit die. */ | |
d85a05f0 DJ |
3541 | init_cu_die_reader (&reader_specs, cu); |
3542 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
3543 | &has_children); | |
ae038cb0 | 3544 | |
9816fde3 | 3545 | prepare_one_comp_unit (cu, comp_unit_die); |
ae038cb0 | 3546 | |
ae038cb0 DJ |
3547 | /* Check if comp unit has_children. |
3548 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 3549 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 3550 | if (has_children) |
93311388 | 3551 | load_partial_dies (abfd, dwarf2_per_objfile->info.buffer, info_ptr, 0, cu); |
ae038cb0 | 3552 | |
98bfdba5 PA |
3553 | do_cleanups (free_abbrevs_cleanup); |
3554 | ||
3555 | if (read_cu) | |
3556 | { | |
3557 | /* We've successfully allocated this compilation unit. Let our | |
3558 | caller clean it up when finished with it. */ | |
3559 | discard_cleanups (free_cu_cleanup); | |
3560 | } | |
ae038cb0 DJ |
3561 | } |
3562 | ||
3563 | /* Create a list of all compilation units in OBJFILE. We do this only | |
3564 | if an inter-comp-unit reference is found; presumably if there is one, | |
3565 | there will be many, and one will occur early in the .debug_info section. | |
3566 | So there's no point in building this list incrementally. */ | |
3567 | ||
3568 | static void | |
3569 | create_all_comp_units (struct objfile *objfile) | |
3570 | { | |
3571 | int n_allocated; | |
3572 | int n_comp_units; | |
3573 | struct dwarf2_per_cu_data **all_comp_units; | |
be391dca TT |
3574 | gdb_byte *info_ptr; |
3575 | ||
3576 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
3577 | info_ptr = dwarf2_per_objfile->info.buffer; | |
ae038cb0 DJ |
3578 | |
3579 | n_comp_units = 0; | |
3580 | n_allocated = 10; | |
3581 | all_comp_units = xmalloc (n_allocated | |
3582 | * sizeof (struct dwarf2_per_cu_data *)); | |
6e70227d | 3583 | |
3e43a32a MS |
3584 | while (info_ptr < dwarf2_per_objfile->info.buffer |
3585 | + dwarf2_per_objfile->info.size) | |
ae038cb0 | 3586 | { |
c764a876 | 3587 | unsigned int length, initial_length_size; |
ae038cb0 | 3588 | struct dwarf2_per_cu_data *this_cu; |
c764a876 | 3589 | unsigned int offset; |
ae038cb0 | 3590 | |
dce234bc | 3591 | offset = info_ptr - dwarf2_per_objfile->info.buffer; |
ae038cb0 DJ |
3592 | |
3593 | /* Read just enough information to find out where the next | |
3594 | compilation unit is. */ | |
c764a876 DE |
3595 | length = read_initial_length (objfile->obfd, info_ptr, |
3596 | &initial_length_size); | |
ae038cb0 DJ |
3597 | |
3598 | /* Save the compilation unit for later lookup. */ | |
3599 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
3600 | sizeof (struct dwarf2_per_cu_data)); | |
3601 | memset (this_cu, 0, sizeof (*this_cu)); | |
3602 | this_cu->offset = offset; | |
c764a876 | 3603 | this_cu->length = length + initial_length_size; |
9291a0cd | 3604 | this_cu->objfile = objfile; |
ae038cb0 DJ |
3605 | |
3606 | if (n_comp_units == n_allocated) | |
3607 | { | |
3608 | n_allocated *= 2; | |
3609 | all_comp_units = xrealloc (all_comp_units, | |
3610 | n_allocated | |
3611 | * sizeof (struct dwarf2_per_cu_data *)); | |
3612 | } | |
3613 | all_comp_units[n_comp_units++] = this_cu; | |
3614 | ||
3615 | info_ptr = info_ptr + this_cu->length; | |
3616 | } | |
3617 | ||
3618 | dwarf2_per_objfile->all_comp_units | |
3619 | = obstack_alloc (&objfile->objfile_obstack, | |
3620 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
3621 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
3622 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
3623 | xfree (all_comp_units); | |
3624 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
3625 | } |
3626 | ||
5734ee8b DJ |
3627 | /* Process all loaded DIEs for compilation unit CU, starting at |
3628 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
3629 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
3630 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
3631 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
3632 | and record the covered ranges in the addrmap. */ | |
c906108c | 3633 | |
72bf9492 DJ |
3634 | static void |
3635 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 3636 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 3637 | { |
72bf9492 | 3638 | struct partial_die_info *pdi; |
c906108c | 3639 | |
91c24f0a DC |
3640 | /* Now, march along the PDI's, descending into ones which have |
3641 | interesting children but skipping the children of the other ones, | |
3642 | until we reach the end of the compilation unit. */ | |
c906108c | 3643 | |
72bf9492 | 3644 | pdi = first_die; |
91c24f0a | 3645 | |
72bf9492 DJ |
3646 | while (pdi != NULL) |
3647 | { | |
3648 | fixup_partial_die (pdi, cu); | |
c906108c | 3649 | |
f55ee35c | 3650 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
3651 | children, so we need to look at them. Ditto for anonymous |
3652 | enums. */ | |
933c6fe4 | 3653 | |
72bf9492 | 3654 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
f55ee35c | 3655 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type) |
c906108c | 3656 | { |
72bf9492 | 3657 | switch (pdi->tag) |
c906108c SS |
3658 | { |
3659 | case DW_TAG_subprogram: | |
5734ee8b | 3660 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 3661 | break; |
72929c62 | 3662 | case DW_TAG_constant: |
c906108c SS |
3663 | case DW_TAG_variable: |
3664 | case DW_TAG_typedef: | |
91c24f0a | 3665 | case DW_TAG_union_type: |
72bf9492 | 3666 | if (!pdi->is_declaration) |
63d06c5c | 3667 | { |
72bf9492 | 3668 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
3669 | } |
3670 | break; | |
c906108c | 3671 | case DW_TAG_class_type: |
680b30c7 | 3672 | case DW_TAG_interface_type: |
c906108c | 3673 | case DW_TAG_structure_type: |
72bf9492 | 3674 | if (!pdi->is_declaration) |
c906108c | 3675 | { |
72bf9492 | 3676 | add_partial_symbol (pdi, cu); |
c906108c SS |
3677 | } |
3678 | break; | |
91c24f0a | 3679 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
3680 | if (!pdi->is_declaration) |
3681 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
3682 | break; |
3683 | case DW_TAG_base_type: | |
a02abb62 | 3684 | case DW_TAG_subrange_type: |
c906108c | 3685 | /* File scope base type definitions are added to the partial |
c5aa993b | 3686 | symbol table. */ |
72bf9492 | 3687 | add_partial_symbol (pdi, cu); |
c906108c | 3688 | break; |
d9fa45fe | 3689 | case DW_TAG_namespace: |
5734ee8b | 3690 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 3691 | break; |
5d7cb8df JK |
3692 | case DW_TAG_module: |
3693 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
3694 | break; | |
c906108c SS |
3695 | default: |
3696 | break; | |
3697 | } | |
3698 | } | |
3699 | ||
72bf9492 DJ |
3700 | /* If the die has a sibling, skip to the sibling. */ |
3701 | ||
3702 | pdi = pdi->die_sibling; | |
3703 | } | |
3704 | } | |
3705 | ||
3706 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 3707 | |
72bf9492 | 3708 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
3709 | name is concatenated with "::" and the partial DIE's name. For |
3710 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
3711 | Enumerators are an exception; they use the scope of their parent |
3712 | enumeration type, i.e. the name of the enumeration type is not | |
3713 | prepended to the enumerator. | |
91c24f0a | 3714 | |
72bf9492 DJ |
3715 | There are two complexities. One is DW_AT_specification; in this |
3716 | case "parent" means the parent of the target of the specification, | |
3717 | instead of the direct parent of the DIE. The other is compilers | |
3718 | which do not emit DW_TAG_namespace; in this case we try to guess | |
3719 | the fully qualified name of structure types from their members' | |
3720 | linkage names. This must be done using the DIE's children rather | |
3721 | than the children of any DW_AT_specification target. We only need | |
3722 | to do this for structures at the top level, i.e. if the target of | |
3723 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
3724 | have a parent. */ | |
3725 | ||
3726 | /* Compute the scope prefix associated with PDI's parent, in | |
3727 | compilation unit CU. The result will be allocated on CU's | |
3728 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
3729 | field. NULL is returned if no prefix is necessary. */ | |
3730 | static char * | |
3731 | partial_die_parent_scope (struct partial_die_info *pdi, | |
3732 | struct dwarf2_cu *cu) | |
3733 | { | |
3734 | char *grandparent_scope; | |
3735 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 3736 | |
72bf9492 DJ |
3737 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
3738 | then this means the parent of the specification DIE. */ | |
3739 | ||
3740 | real_pdi = pdi; | |
72bf9492 | 3741 | while (real_pdi->has_specification) |
10b3939b | 3742 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
3743 | |
3744 | parent = real_pdi->die_parent; | |
3745 | if (parent == NULL) | |
3746 | return NULL; | |
3747 | ||
3748 | if (parent->scope_set) | |
3749 | return parent->scope; | |
3750 | ||
3751 | fixup_partial_die (parent, cu); | |
3752 | ||
10b3939b | 3753 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 3754 | |
acebe513 UW |
3755 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
3756 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
3757 | Work around this problem here. */ | |
3758 | if (cu->language == language_cplus | |
6e70227d | 3759 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
3760 | && strcmp (parent->name, "::") == 0 |
3761 | && grandparent_scope == NULL) | |
3762 | { | |
3763 | parent->scope = NULL; | |
3764 | parent->scope_set = 1; | |
3765 | return NULL; | |
3766 | } | |
3767 | ||
72bf9492 | 3768 | if (parent->tag == DW_TAG_namespace |
f55ee35c | 3769 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
3770 | || parent->tag == DW_TAG_structure_type |
3771 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 3772 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
3773 | || parent->tag == DW_TAG_union_type |
3774 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
3775 | { |
3776 | if (grandparent_scope == NULL) | |
3777 | parent->scope = parent->name; | |
3778 | else | |
3e43a32a MS |
3779 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
3780 | grandparent_scope, | |
f55ee35c | 3781 | parent->name, 0, cu); |
72bf9492 | 3782 | } |
ceeb3d5a | 3783 | else if (parent->tag == DW_TAG_enumerator) |
72bf9492 DJ |
3784 | /* Enumerators should not get the name of the enumeration as a prefix. */ |
3785 | parent->scope = grandparent_scope; | |
3786 | else | |
3787 | { | |
3788 | /* FIXME drow/2004-04-01: What should we be doing with | |
3789 | function-local names? For partial symbols, we should probably be | |
3790 | ignoring them. */ | |
3791 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3792 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
3793 | parent->tag, pdi->offset); |
3794 | parent->scope = grandparent_scope; | |
c906108c SS |
3795 | } |
3796 | ||
72bf9492 DJ |
3797 | parent->scope_set = 1; |
3798 | return parent->scope; | |
3799 | } | |
3800 | ||
3801 | /* Return the fully scoped name associated with PDI, from compilation unit | |
3802 | CU. The result will be allocated with malloc. */ | |
3803 | static char * | |
3804 | partial_die_full_name (struct partial_die_info *pdi, | |
3805 | struct dwarf2_cu *cu) | |
3806 | { | |
3807 | char *parent_scope; | |
3808 | ||
98bfdba5 PA |
3809 | /* If this is a template instantiation, we can not work out the |
3810 | template arguments from partial DIEs. So, unfortunately, we have | |
3811 | to go through the full DIEs. At least any work we do building | |
3812 | types here will be reused if full symbols are loaded later. */ | |
3813 | if (pdi->has_template_arguments) | |
3814 | { | |
3815 | fixup_partial_die (pdi, cu); | |
3816 | ||
3817 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
3818 | { | |
3819 | struct die_info *die; | |
3820 | struct attribute attr; | |
3821 | struct dwarf2_cu *ref_cu = cu; | |
3822 | ||
3823 | attr.name = 0; | |
3824 | attr.form = DW_FORM_ref_addr; | |
3825 | attr.u.addr = pdi->offset; | |
3826 | die = follow_die_ref (NULL, &attr, &ref_cu); | |
3827 | ||
3828 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
3829 | } | |
3830 | } | |
3831 | ||
72bf9492 DJ |
3832 | parent_scope = partial_die_parent_scope (pdi, cu); |
3833 | if (parent_scope == NULL) | |
3834 | return NULL; | |
3835 | else | |
f55ee35c | 3836 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
3837 | } |
3838 | ||
3839 | static void | |
72bf9492 | 3840 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 3841 | { |
e7c27a73 | 3842 | struct objfile *objfile = cu->objfile; |
c906108c | 3843 | CORE_ADDR addr = 0; |
decbce07 | 3844 | char *actual_name = NULL; |
5c4e30ca | 3845 | const struct partial_symbol *psym = NULL; |
e142c38c | 3846 | CORE_ADDR baseaddr; |
72bf9492 | 3847 | int built_actual_name = 0; |
e142c38c DJ |
3848 | |
3849 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 3850 | |
94af9270 KS |
3851 | actual_name = partial_die_full_name (pdi, cu); |
3852 | if (actual_name) | |
3853 | built_actual_name = 1; | |
63d06c5c | 3854 | |
72bf9492 DJ |
3855 | if (actual_name == NULL) |
3856 | actual_name = pdi->name; | |
3857 | ||
c906108c SS |
3858 | switch (pdi->tag) |
3859 | { | |
3860 | case DW_TAG_subprogram: | |
2cfa0c8d | 3861 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 3862 | { |
2cfa0c8d JB |
3863 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
3864 | of the global scope. But in Ada, we want to be able to access | |
3865 | nested procedures globally. So all Ada subprograms are stored | |
3866 | in the global scope. */ | |
f47fb265 | 3867 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 3868 | mst_text, objfile); */ |
f47fb265 MS |
3869 | add_psymbol_to_list (actual_name, strlen (actual_name), |
3870 | built_actual_name, | |
3871 | VAR_DOMAIN, LOC_BLOCK, | |
3872 | &objfile->global_psymbols, | |
3873 | 0, pdi->lowpc + baseaddr, | |
3874 | cu->language, objfile); | |
c906108c SS |
3875 | } |
3876 | else | |
3877 | { | |
f47fb265 | 3878 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 3879 | mst_file_text, objfile); */ |
f47fb265 MS |
3880 | add_psymbol_to_list (actual_name, strlen (actual_name), |
3881 | built_actual_name, | |
3882 | VAR_DOMAIN, LOC_BLOCK, | |
3883 | &objfile->static_psymbols, | |
3884 | 0, pdi->lowpc + baseaddr, | |
3885 | cu->language, objfile); | |
c906108c SS |
3886 | } |
3887 | break; | |
72929c62 JB |
3888 | case DW_TAG_constant: |
3889 | { | |
3890 | struct psymbol_allocation_list *list; | |
3891 | ||
3892 | if (pdi->is_external) | |
3893 | list = &objfile->global_psymbols; | |
3894 | else | |
3895 | list = &objfile->static_psymbols; | |
f47fb265 MS |
3896 | add_psymbol_to_list (actual_name, strlen (actual_name), |
3897 | built_actual_name, VAR_DOMAIN, LOC_STATIC, | |
3898 | list, 0, 0, cu->language, objfile); | |
72929c62 JB |
3899 | } |
3900 | break; | |
c906108c | 3901 | case DW_TAG_variable: |
caac4577 JG |
3902 | if (pdi->locdesc) |
3903 | addr = decode_locdesc (pdi->locdesc, cu); | |
3904 | ||
3905 | if (pdi->locdesc | |
3906 | && addr == 0 | |
3907 | && !dwarf2_per_objfile->has_section_at_zero) | |
3908 | { | |
3909 | /* A global or static variable may also have been stripped | |
3910 | out by the linker if unused, in which case its address | |
3911 | will be nullified; do not add such variables into partial | |
3912 | symbol table then. */ | |
3913 | } | |
3914 | else if (pdi->is_external) | |
c906108c SS |
3915 | { |
3916 | /* Global Variable. | |
3917 | Don't enter into the minimal symbol tables as there is | |
3918 | a minimal symbol table entry from the ELF symbols already. | |
3919 | Enter into partial symbol table if it has a location | |
3920 | descriptor or a type. | |
3921 | If the location descriptor is missing, new_symbol will create | |
3922 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
3923 | be determined from the minimal symbol table whenever the variable | |
3924 | is referenced. | |
3925 | The address for the partial symbol table entry is not | |
3926 | used by GDB, but it comes in handy for debugging partial symbol | |
3927 | table building. */ | |
3928 | ||
c906108c | 3929 | if (pdi->locdesc || pdi->has_type) |
f47fb265 MS |
3930 | add_psymbol_to_list (actual_name, strlen (actual_name), |
3931 | built_actual_name, | |
3932 | VAR_DOMAIN, LOC_STATIC, | |
3933 | &objfile->global_psymbols, | |
3934 | 0, addr + baseaddr, | |
3935 | cu->language, objfile); | |
c906108c SS |
3936 | } |
3937 | else | |
3938 | { | |
0963b4bd | 3939 | /* Static Variable. Skip symbols without location descriptors. */ |
c906108c | 3940 | if (pdi->locdesc == NULL) |
decbce07 MS |
3941 | { |
3942 | if (built_actual_name) | |
3943 | xfree (actual_name); | |
3944 | return; | |
3945 | } | |
f47fb265 | 3946 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 3947 | mst_file_data, objfile); */ |
f47fb265 MS |
3948 | add_psymbol_to_list (actual_name, strlen (actual_name), |
3949 | built_actual_name, | |
3950 | VAR_DOMAIN, LOC_STATIC, | |
3951 | &objfile->static_psymbols, | |
3952 | 0, addr + baseaddr, | |
3953 | cu->language, objfile); | |
c906108c SS |
3954 | } |
3955 | break; | |
3956 | case DW_TAG_typedef: | |
3957 | case DW_TAG_base_type: | |
a02abb62 | 3958 | case DW_TAG_subrange_type: |
38d518c9 | 3959 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3960 | built_actual_name, |
176620f1 | 3961 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 3962 | &objfile->static_psymbols, |
e142c38c | 3963 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 3964 | break; |
72bf9492 DJ |
3965 | case DW_TAG_namespace: |
3966 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
04a679b8 | 3967 | built_actual_name, |
72bf9492 DJ |
3968 | VAR_DOMAIN, LOC_TYPEDEF, |
3969 | &objfile->global_psymbols, | |
3970 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
3971 | break; | |
c906108c | 3972 | case DW_TAG_class_type: |
680b30c7 | 3973 | case DW_TAG_interface_type: |
c906108c SS |
3974 | case DW_TAG_structure_type: |
3975 | case DW_TAG_union_type: | |
3976 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
3977 | /* Skip external references. The DWARF standard says in the section |
3978 | about "Structure, Union, and Class Type Entries": "An incomplete | |
3979 | structure, union or class type is represented by a structure, | |
3980 | union or class entry that does not have a byte size attribute | |
3981 | and that has a DW_AT_declaration attribute." */ | |
3982 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
3983 | { |
3984 | if (built_actual_name) | |
3985 | xfree (actual_name); | |
3986 | return; | |
3987 | } | |
fa4028e9 | 3988 | |
63d06c5c DC |
3989 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
3990 | static vs. global. */ | |
38d518c9 | 3991 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3992 | built_actual_name, |
176620f1 | 3993 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
3994 | (cu->language == language_cplus |
3995 | || cu->language == language_java) | |
63d06c5c DC |
3996 | ? &objfile->global_psymbols |
3997 | : &objfile->static_psymbols, | |
e142c38c | 3998 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 3999 | |
c906108c SS |
4000 | break; |
4001 | case DW_TAG_enumerator: | |
38d518c9 | 4002 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 4003 | built_actual_name, |
176620f1 | 4004 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
4005 | (cu->language == language_cplus |
4006 | || cu->language == language_java) | |
f6fe98ef DJ |
4007 | ? &objfile->global_psymbols |
4008 | : &objfile->static_psymbols, | |
e142c38c | 4009 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
4010 | break; |
4011 | default: | |
4012 | break; | |
4013 | } | |
5c4e30ca | 4014 | |
72bf9492 DJ |
4015 | if (built_actual_name) |
4016 | xfree (actual_name); | |
c906108c SS |
4017 | } |
4018 | ||
5c4e30ca DC |
4019 | /* Read a partial die corresponding to a namespace; also, add a symbol |
4020 | corresponding to that namespace to the symbol table. NAMESPACE is | |
4021 | the name of the enclosing namespace. */ | |
91c24f0a | 4022 | |
72bf9492 DJ |
4023 | static void |
4024 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 4025 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 4026 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 4027 | { |
72bf9492 | 4028 | /* Add a symbol for the namespace. */ |
e7c27a73 | 4029 | |
72bf9492 | 4030 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
4031 | |
4032 | /* Now scan partial symbols in that namespace. */ | |
4033 | ||
91c24f0a | 4034 | if (pdi->has_children) |
5734ee8b | 4035 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
4036 | } |
4037 | ||
5d7cb8df JK |
4038 | /* Read a partial die corresponding to a Fortran module. */ |
4039 | ||
4040 | static void | |
4041 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
4042 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
4043 | { | |
f55ee35c | 4044 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
4045 | |
4046 | if (pdi->has_children) | |
4047 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
4048 | } | |
4049 | ||
bc30ff58 JB |
4050 | /* Read a partial die corresponding to a subprogram and create a partial |
4051 | symbol for that subprogram. When the CU language allows it, this | |
4052 | routine also defines a partial symbol for each nested subprogram | |
4053 | that this subprogram contains. | |
6e70227d | 4054 | |
bc30ff58 JB |
4055 | DIE my also be a lexical block, in which case we simply search |
4056 | recursively for suprograms defined inside that lexical block. | |
4057 | Again, this is only performed when the CU language allows this | |
4058 | type of definitions. */ | |
4059 | ||
4060 | static void | |
4061 | add_partial_subprogram (struct partial_die_info *pdi, | |
4062 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 4063 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
4064 | { |
4065 | if (pdi->tag == DW_TAG_subprogram) | |
4066 | { | |
4067 | if (pdi->has_pc_info) | |
4068 | { | |
4069 | if (pdi->lowpc < *lowpc) | |
4070 | *lowpc = pdi->lowpc; | |
4071 | if (pdi->highpc > *highpc) | |
4072 | *highpc = pdi->highpc; | |
5734ee8b DJ |
4073 | if (need_pc) |
4074 | { | |
4075 | CORE_ADDR baseaddr; | |
4076 | struct objfile *objfile = cu->objfile; | |
4077 | ||
4078 | baseaddr = ANOFFSET (objfile->section_offsets, | |
4079 | SECT_OFF_TEXT (objfile)); | |
4080 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
4081 | pdi->lowpc + baseaddr, |
4082 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 4083 | cu->per_cu->v.psymtab); |
5734ee8b | 4084 | } |
bc30ff58 | 4085 | if (!pdi->is_declaration) |
e8d05480 JB |
4086 | /* Ignore subprogram DIEs that do not have a name, they are |
4087 | illegal. Do not emit a complaint at this point, we will | |
4088 | do so when we convert this psymtab into a symtab. */ | |
4089 | if (pdi->name) | |
4090 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
4091 | } |
4092 | } | |
6e70227d | 4093 | |
bc30ff58 JB |
4094 | if (! pdi->has_children) |
4095 | return; | |
4096 | ||
4097 | if (cu->language == language_ada) | |
4098 | { | |
4099 | pdi = pdi->die_child; | |
4100 | while (pdi != NULL) | |
4101 | { | |
4102 | fixup_partial_die (pdi, cu); | |
4103 | if (pdi->tag == DW_TAG_subprogram | |
4104 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 4105 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
4106 | pdi = pdi->die_sibling; |
4107 | } | |
4108 | } | |
4109 | } | |
4110 | ||
91c24f0a DC |
4111 | /* Read a partial die corresponding to an enumeration type. */ |
4112 | ||
72bf9492 DJ |
4113 | static void |
4114 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
4115 | struct dwarf2_cu *cu) | |
91c24f0a | 4116 | { |
72bf9492 | 4117 | struct partial_die_info *pdi; |
91c24f0a DC |
4118 | |
4119 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
4120 | add_partial_symbol (enum_pdi, cu); |
4121 | ||
4122 | pdi = enum_pdi->die_child; | |
4123 | while (pdi) | |
91c24f0a | 4124 | { |
72bf9492 | 4125 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 4126 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 4127 | else |
72bf9492 DJ |
4128 | add_partial_symbol (pdi, cu); |
4129 | pdi = pdi->die_sibling; | |
91c24f0a | 4130 | } |
91c24f0a DC |
4131 | } |
4132 | ||
4bb7a0a7 DJ |
4133 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
4134 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
4135 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
4136 | the initial number. */ | |
4137 | ||
4138 | static struct abbrev_info * | |
fe1b8b76 | 4139 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 4140 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
4141 | { |
4142 | bfd *abfd = cu->objfile->obfd; | |
4143 | unsigned int abbrev_number; | |
4144 | struct abbrev_info *abbrev; | |
4145 | ||
4146 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4147 | ||
4148 | if (abbrev_number == 0) | |
4149 | return NULL; | |
4150 | ||
4151 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
4152 | if (!abbrev) | |
4153 | { | |
3e43a32a MS |
4154 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
4155 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
4156 | } |
4157 | ||
4158 | return abbrev; | |
4159 | } | |
4160 | ||
93311388 DE |
4161 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
4162 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
4163 | DIE. Any children of the skipped DIEs will also be skipped. */ |
4164 | ||
fe1b8b76 | 4165 | static gdb_byte * |
93311388 | 4166 | skip_children (gdb_byte *buffer, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
4167 | { |
4168 | struct abbrev_info *abbrev; | |
4169 | unsigned int bytes_read; | |
4170 | ||
4171 | while (1) | |
4172 | { | |
4173 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
4174 | if (abbrev == NULL) | |
4175 | return info_ptr + bytes_read; | |
4176 | else | |
93311388 | 4177 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
4bb7a0a7 DJ |
4178 | } |
4179 | } | |
4180 | ||
93311388 DE |
4181 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
4182 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
4183 | abbrev corresponding to that skipped uleb128 should be passed in |
4184 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
4185 | children. */ | |
4186 | ||
fe1b8b76 | 4187 | static gdb_byte * |
93311388 DE |
4188 | skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
4189 | struct abbrev_info *abbrev, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
4190 | { |
4191 | unsigned int bytes_read; | |
4192 | struct attribute attr; | |
4193 | bfd *abfd = cu->objfile->obfd; | |
4194 | unsigned int form, i; | |
4195 | ||
4196 | for (i = 0; i < abbrev->num_attrs; i++) | |
4197 | { | |
4198 | /* The only abbrev we care about is DW_AT_sibling. */ | |
4199 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
4200 | { | |
4201 | read_attribute (&attr, &abbrev->attrs[i], | |
4202 | abfd, info_ptr, cu); | |
4203 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
4204 | complaint (&symfile_complaints, |
4205 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 4206 | else |
93311388 | 4207 | return buffer + dwarf2_get_ref_die_offset (&attr); |
4bb7a0a7 DJ |
4208 | } |
4209 | ||
4210 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
4211 | form = abbrev->attrs[i].form; | |
4212 | skip_attribute: | |
4213 | switch (form) | |
4214 | { | |
4bb7a0a7 | 4215 | case DW_FORM_ref_addr: |
ae411497 TT |
4216 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
4217 | and later it is offset sized. */ | |
4218 | if (cu->header.version == 2) | |
4219 | info_ptr += cu->header.addr_size; | |
4220 | else | |
4221 | info_ptr += cu->header.offset_size; | |
4222 | break; | |
4223 | case DW_FORM_addr: | |
4bb7a0a7 DJ |
4224 | info_ptr += cu->header.addr_size; |
4225 | break; | |
4226 | case DW_FORM_data1: | |
4227 | case DW_FORM_ref1: | |
4228 | case DW_FORM_flag: | |
4229 | info_ptr += 1; | |
4230 | break; | |
2dc7f7b3 TT |
4231 | case DW_FORM_flag_present: |
4232 | break; | |
4bb7a0a7 DJ |
4233 | case DW_FORM_data2: |
4234 | case DW_FORM_ref2: | |
4235 | info_ptr += 2; | |
4236 | break; | |
4237 | case DW_FORM_data4: | |
4238 | case DW_FORM_ref4: | |
4239 | info_ptr += 4; | |
4240 | break; | |
4241 | case DW_FORM_data8: | |
4242 | case DW_FORM_ref8: | |
55f1336d | 4243 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
4244 | info_ptr += 8; |
4245 | break; | |
4246 | case DW_FORM_string: | |
9b1c24c8 | 4247 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
4248 | info_ptr += bytes_read; |
4249 | break; | |
2dc7f7b3 | 4250 | case DW_FORM_sec_offset: |
4bb7a0a7 DJ |
4251 | case DW_FORM_strp: |
4252 | info_ptr += cu->header.offset_size; | |
4253 | break; | |
2dc7f7b3 | 4254 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
4255 | case DW_FORM_block: |
4256 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4257 | info_ptr += bytes_read; | |
4258 | break; | |
4259 | case DW_FORM_block1: | |
4260 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
4261 | break; | |
4262 | case DW_FORM_block2: | |
4263 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
4264 | break; | |
4265 | case DW_FORM_block4: | |
4266 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
4267 | break; | |
4268 | case DW_FORM_sdata: | |
4269 | case DW_FORM_udata: | |
4270 | case DW_FORM_ref_udata: | |
4271 | info_ptr = skip_leb128 (abfd, info_ptr); | |
4272 | break; | |
4273 | case DW_FORM_indirect: | |
4274 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4275 | info_ptr += bytes_read; | |
4276 | /* We need to continue parsing from here, so just go back to | |
4277 | the top. */ | |
4278 | goto skip_attribute; | |
4279 | ||
4280 | default: | |
3e43a32a MS |
4281 | error (_("Dwarf Error: Cannot handle %s " |
4282 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
4283 | dwarf_form_name (form), |
4284 | bfd_get_filename (abfd)); | |
4285 | } | |
4286 | } | |
4287 | ||
4288 | if (abbrev->has_children) | |
93311388 | 4289 | return skip_children (buffer, info_ptr, cu); |
4bb7a0a7 DJ |
4290 | else |
4291 | return info_ptr; | |
4292 | } | |
4293 | ||
93311388 DE |
4294 | /* Locate ORIG_PDI's sibling. |
4295 | INFO_PTR should point to the start of the next DIE after ORIG_PDI | |
4296 | in BUFFER. */ | |
91c24f0a | 4297 | |
fe1b8b76 | 4298 | static gdb_byte * |
93311388 DE |
4299 | locate_pdi_sibling (struct partial_die_info *orig_pdi, |
4300 | gdb_byte *buffer, gdb_byte *info_ptr, | |
e7c27a73 | 4301 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
4302 | { |
4303 | /* Do we know the sibling already? */ | |
72bf9492 | 4304 | |
91c24f0a DC |
4305 | if (orig_pdi->sibling) |
4306 | return orig_pdi->sibling; | |
4307 | ||
4308 | /* Are there any children to deal with? */ | |
4309 | ||
4310 | if (!orig_pdi->has_children) | |
4311 | return info_ptr; | |
4312 | ||
4bb7a0a7 | 4313 | /* Skip the children the long way. */ |
91c24f0a | 4314 | |
93311388 | 4315 | return skip_children (buffer, info_ptr, cu); |
91c24f0a DC |
4316 | } |
4317 | ||
c906108c SS |
4318 | /* Expand this partial symbol table into a full symbol table. */ |
4319 | ||
4320 | static void | |
fba45db2 | 4321 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c | 4322 | { |
c906108c SS |
4323 | if (pst != NULL) |
4324 | { | |
4325 | if (pst->readin) | |
4326 | { | |
3e43a32a MS |
4327 | warning (_("bug: psymtab for %s is already read in."), |
4328 | pst->filename); | |
c906108c SS |
4329 | } |
4330 | else | |
4331 | { | |
4332 | if (info_verbose) | |
4333 | { | |
3e43a32a MS |
4334 | printf_filtered (_("Reading in symbols for %s..."), |
4335 | pst->filename); | |
c906108c SS |
4336 | gdb_flush (gdb_stdout); |
4337 | } | |
4338 | ||
10b3939b DJ |
4339 | /* Restore our global data. */ |
4340 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
4341 | dwarf2_objfile_data_key); | |
4342 | ||
b2ab525c KB |
4343 | /* If this psymtab is constructed from a debug-only objfile, the |
4344 | has_section_at_zero flag will not necessarily be correct. We | |
4345 | can get the correct value for this flag by looking at the data | |
4346 | associated with the (presumably stripped) associated objfile. */ | |
4347 | if (pst->objfile->separate_debug_objfile_backlink) | |
4348 | { | |
4349 | struct dwarf2_per_objfile *dpo_backlink | |
4350 | = objfile_data (pst->objfile->separate_debug_objfile_backlink, | |
4351 | dwarf2_objfile_data_key); | |
9a619af0 | 4352 | |
b2ab525c KB |
4353 | dwarf2_per_objfile->has_section_at_zero |
4354 | = dpo_backlink->has_section_at_zero; | |
4355 | } | |
4356 | ||
98bfdba5 PA |
4357 | dwarf2_per_objfile->reading_partial_symbols = 0; |
4358 | ||
c906108c SS |
4359 | psymtab_to_symtab_1 (pst); |
4360 | ||
4361 | /* Finish up the debug error message. */ | |
4362 | if (info_verbose) | |
a3f17187 | 4363 | printf_filtered (_("done.\n")); |
c906108c SS |
4364 | } |
4365 | } | |
4366 | } | |
4367 | ||
10b3939b DJ |
4368 | /* Add PER_CU to the queue. */ |
4369 | ||
4370 | static void | |
03dd20cc | 4371 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b DJ |
4372 | { |
4373 | struct dwarf2_queue_item *item; | |
4374 | ||
4375 | per_cu->queued = 1; | |
4376 | item = xmalloc (sizeof (*item)); | |
4377 | item->per_cu = per_cu; | |
4378 | item->next = NULL; | |
4379 | ||
4380 | if (dwarf2_queue == NULL) | |
4381 | dwarf2_queue = item; | |
4382 | else | |
4383 | dwarf2_queue_tail->next = item; | |
4384 | ||
4385 | dwarf2_queue_tail = item; | |
4386 | } | |
4387 | ||
4388 | /* Process the queue. */ | |
4389 | ||
4390 | static void | |
4391 | process_queue (struct objfile *objfile) | |
4392 | { | |
4393 | struct dwarf2_queue_item *item, *next_item; | |
4394 | ||
03dd20cc DJ |
4395 | /* The queue starts out with one item, but following a DIE reference |
4396 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
4397 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
4398 | { | |
9291a0cd TT |
4399 | if (dwarf2_per_objfile->using_index |
4400 | ? !item->per_cu->v.quick->symtab | |
4401 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
10b3939b DJ |
4402 | process_full_comp_unit (item->per_cu); |
4403 | ||
4404 | item->per_cu->queued = 0; | |
4405 | next_item = item->next; | |
4406 | xfree (item); | |
4407 | } | |
4408 | ||
4409 | dwarf2_queue_tail = NULL; | |
4410 | } | |
4411 | ||
4412 | /* Free all allocated queue entries. This function only releases anything if | |
4413 | an error was thrown; if the queue was processed then it would have been | |
4414 | freed as we went along. */ | |
4415 | ||
4416 | static void | |
4417 | dwarf2_release_queue (void *dummy) | |
4418 | { | |
4419 | struct dwarf2_queue_item *item, *last; | |
4420 | ||
4421 | item = dwarf2_queue; | |
4422 | while (item) | |
4423 | { | |
4424 | /* Anything still marked queued is likely to be in an | |
4425 | inconsistent state, so discard it. */ | |
4426 | if (item->per_cu->queued) | |
4427 | { | |
4428 | if (item->per_cu->cu != NULL) | |
4429 | free_one_cached_comp_unit (item->per_cu->cu); | |
4430 | item->per_cu->queued = 0; | |
4431 | } | |
4432 | ||
4433 | last = item; | |
4434 | item = item->next; | |
4435 | xfree (last); | |
4436 | } | |
4437 | ||
4438 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
4439 | } | |
4440 | ||
4441 | /* Read in full symbols for PST, and anything it depends on. */ | |
4442 | ||
c906108c | 4443 | static void |
fba45db2 | 4444 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 4445 | { |
10b3939b | 4446 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 4447 | struct cleanup *back_to; |
aaa75496 JB |
4448 | int i; |
4449 | ||
4450 | for (i = 0; i < pst->number_of_dependencies; i++) | |
4451 | if (!pst->dependencies[i]->readin) | |
4452 | { | |
4453 | /* Inform about additional files that need to be read in. */ | |
4454 | if (info_verbose) | |
4455 | { | |
a3f17187 | 4456 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
4457 | fputs_filtered (" ", gdb_stdout); |
4458 | wrap_here (""); | |
4459 | fputs_filtered ("and ", gdb_stdout); | |
4460 | wrap_here (""); | |
4461 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 4462 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
4463 | gdb_flush (gdb_stdout); |
4464 | } | |
4465 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
4466 | } | |
4467 | ||
e38df1d0 | 4468 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
4469 | |
4470 | if (per_cu == NULL) | |
aaa75496 JB |
4471 | { |
4472 | /* It's an include file, no symbols to read for it. | |
4473 | Everything is in the parent symtab. */ | |
4474 | pst->readin = 1; | |
4475 | return; | |
4476 | } | |
c906108c | 4477 | |
9291a0cd | 4478 | dw2_do_instantiate_symtab (pst->objfile, per_cu); |
10b3939b DJ |
4479 | } |
4480 | ||
93311388 | 4481 | /* Load the DIEs associated with PER_CU into memory. */ |
10b3939b | 4482 | |
93311388 | 4483 | static void |
3e43a32a MS |
4484 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
4485 | struct objfile *objfile) | |
10b3939b | 4486 | { |
31ffec48 | 4487 | bfd *abfd = objfile->obfd; |
10b3939b | 4488 | struct dwarf2_cu *cu; |
c764a876 | 4489 | unsigned int offset; |
93311388 | 4490 | gdb_byte *info_ptr, *beg_of_comp_unit; |
98bfdba5 | 4491 | struct cleanup *free_abbrevs_cleanup = NULL, *free_cu_cleanup = NULL; |
10b3939b | 4492 | struct attribute *attr; |
98bfdba5 | 4493 | int read_cu = 0; |
6502dd73 | 4494 | |
348e048f DE |
4495 | gdb_assert (! per_cu->from_debug_types); |
4496 | ||
c906108c | 4497 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 4498 | offset = per_cu->offset; |
6502dd73 | 4499 | |
be391dca | 4500 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
dce234bc | 4501 | info_ptr = dwarf2_per_objfile->info.buffer + offset; |
93311388 | 4502 | beg_of_comp_unit = info_ptr; |
63d06c5c | 4503 | |
98bfdba5 PA |
4504 | if (per_cu->cu == NULL) |
4505 | { | |
9816fde3 JK |
4506 | cu = xmalloc (sizeof (*cu)); |
4507 | init_one_comp_unit (cu, objfile); | |
98bfdba5 PA |
4508 | |
4509 | read_cu = 1; | |
c906108c | 4510 | |
98bfdba5 PA |
4511 | /* If an error occurs while loading, release our storage. */ |
4512 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 4513 | |
98bfdba5 PA |
4514 | /* Read in the comp_unit header. */ |
4515 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); | |
c906108c | 4516 | |
98bfdba5 PA |
4517 | /* Complete the cu_header. */ |
4518 | cu->header.offset = offset; | |
4519 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; | |
93311388 | 4520 | |
98bfdba5 PA |
4521 | /* Read the abbrevs for this compilation unit. */ |
4522 | dwarf2_read_abbrevs (abfd, cu); | |
4523 | free_abbrevs_cleanup = make_cleanup (dwarf2_free_abbrev_table, cu); | |
10b3939b | 4524 | |
98bfdba5 PA |
4525 | /* Link this compilation unit into the compilation unit tree. */ |
4526 | per_cu->cu = cu; | |
4527 | cu->per_cu = per_cu; | |
98bfdba5 PA |
4528 | |
4529 | /* Link this CU into read_in_chain. */ | |
4530 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
4531 | dwarf2_per_objfile->read_in_chain = per_cu; | |
4532 | } | |
4533 | else | |
4534 | { | |
4535 | cu = per_cu->cu; | |
4536 | info_ptr += cu->header.first_die_offset; | |
4537 | } | |
e142c38c | 4538 | |
93311388 | 4539 | cu->dies = read_comp_unit (info_ptr, cu); |
10b3939b DJ |
4540 | |
4541 | /* We try not to read any attributes in this function, because not | |
4542 | all objfiles needed for references have been loaded yet, and symbol | |
4543 | table processing isn't initialized. But we have to set the CU language, | |
4544 | or we won't be able to build types correctly. */ | |
9816fde3 | 4545 | prepare_one_comp_unit (cu, cu->dies); |
10b3939b | 4546 | |
a6c727b2 DJ |
4547 | /* Similarly, if we do not read the producer, we can not apply |
4548 | producer-specific interpretation. */ | |
4549 | attr = dwarf2_attr (cu->dies, DW_AT_producer, cu); | |
4550 | if (attr) | |
4551 | cu->producer = DW_STRING (attr); | |
4552 | ||
98bfdba5 PA |
4553 | if (read_cu) |
4554 | { | |
4555 | do_cleanups (free_abbrevs_cleanup); | |
e142c38c | 4556 | |
98bfdba5 PA |
4557 | /* We've successfully allocated this compilation unit. Let our |
4558 | caller clean it up when finished with it. */ | |
4559 | discard_cleanups (free_cu_cleanup); | |
4560 | } | |
10b3939b DJ |
4561 | } |
4562 | ||
3da10d80 KS |
4563 | /* Add a DIE to the delayed physname list. */ |
4564 | ||
4565 | static void | |
4566 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
4567 | const char *name, struct die_info *die, | |
4568 | struct dwarf2_cu *cu) | |
4569 | { | |
4570 | struct delayed_method_info mi; | |
4571 | mi.type = type; | |
4572 | mi.fnfield_index = fnfield_index; | |
4573 | mi.index = index; | |
4574 | mi.name = name; | |
4575 | mi.die = die; | |
4576 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
4577 | } | |
4578 | ||
4579 | /* A cleanup for freeing the delayed method list. */ | |
4580 | ||
4581 | static void | |
4582 | free_delayed_list (void *ptr) | |
4583 | { | |
4584 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
4585 | if (cu->method_list != NULL) | |
4586 | { | |
4587 | VEC_free (delayed_method_info, cu->method_list); | |
4588 | cu->method_list = NULL; | |
4589 | } | |
4590 | } | |
4591 | ||
4592 | /* Compute the physnames of any methods on the CU's method list. | |
4593 | ||
4594 | The computation of method physnames is delayed in order to avoid the | |
4595 | (bad) condition that one of the method's formal parameters is of an as yet | |
4596 | incomplete type. */ | |
4597 | ||
4598 | static void | |
4599 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
4600 | { | |
4601 | int i; | |
4602 | struct delayed_method_info *mi; | |
4603 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
4604 | { | |
4605 | char *physname; | |
4606 | struct fn_fieldlist *fn_flp | |
4607 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
4608 | physname = (char *) dwarf2_physname ((char *) mi->name, mi->die, cu); | |
4609 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; | |
4610 | } | |
4611 | } | |
4612 | ||
10b3939b DJ |
4613 | /* Generate full symbol information for PST and CU, whose DIEs have |
4614 | already been loaded into memory. */ | |
4615 | ||
4616 | static void | |
4617 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
4618 | { | |
10b3939b | 4619 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 4620 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
4621 | CORE_ADDR lowpc, highpc; |
4622 | struct symtab *symtab; | |
3da10d80 | 4623 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b DJ |
4624 | CORE_ADDR baseaddr; |
4625 | ||
4626 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
4627 | ||
10b3939b DJ |
4628 | buildsym_init (); |
4629 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 4630 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
4631 | |
4632 | cu->list_in_scope = &file_symbols; | |
c906108c | 4633 | |
d85a05f0 | 4634 | dwarf2_find_base_address (cu->dies, cu); |
0d53c4c4 | 4635 | |
c906108c | 4636 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 4637 | process_die (cu->dies, cu); |
c906108c | 4638 | |
3da10d80 KS |
4639 | /* Now that we have processed all the DIEs in the CU, all the types |
4640 | should be complete, and it should now be safe to compute all of the | |
4641 | physnames. */ | |
4642 | compute_delayed_physnames (cu); | |
4643 | do_cleanups (delayed_list_cleanup); | |
4644 | ||
fae299cd DC |
4645 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
4646 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
4647 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 4648 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 4649 | |
613e1657 | 4650 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
4651 | |
4652 | /* Set symtab language to language from DW_AT_language. | |
4653 | If the compilation is from a C file generated by language preprocessors, | |
4654 | do not set the language if it was already deduced by start_subfile. */ | |
4655 | if (symtab != NULL | |
10b3939b | 4656 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 4657 | { |
10b3939b | 4658 | symtab->language = cu->language; |
c906108c | 4659 | } |
9291a0cd TT |
4660 | |
4661 | if (dwarf2_per_objfile->using_index) | |
4662 | per_cu->v.quick->symtab = symtab; | |
4663 | else | |
4664 | { | |
4665 | struct partial_symtab *pst = per_cu->v.psymtab; | |
4666 | pst->symtab = symtab; | |
4667 | pst->readin = 1; | |
4668 | } | |
c906108c SS |
4669 | |
4670 | do_cleanups (back_to); | |
4671 | } | |
4672 | ||
4673 | /* Process a die and its children. */ | |
4674 | ||
4675 | static void | |
e7c27a73 | 4676 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4677 | { |
4678 | switch (die->tag) | |
4679 | { | |
4680 | case DW_TAG_padding: | |
4681 | break; | |
4682 | case DW_TAG_compile_unit: | |
e7c27a73 | 4683 | read_file_scope (die, cu); |
c906108c | 4684 | break; |
348e048f DE |
4685 | case DW_TAG_type_unit: |
4686 | read_type_unit_scope (die, cu); | |
4687 | break; | |
c906108c | 4688 | case DW_TAG_subprogram: |
c906108c | 4689 | case DW_TAG_inlined_subroutine: |
edb3359d | 4690 | read_func_scope (die, cu); |
c906108c SS |
4691 | break; |
4692 | case DW_TAG_lexical_block: | |
14898363 L |
4693 | case DW_TAG_try_block: |
4694 | case DW_TAG_catch_block: | |
e7c27a73 | 4695 | read_lexical_block_scope (die, cu); |
c906108c SS |
4696 | break; |
4697 | case DW_TAG_class_type: | |
680b30c7 | 4698 | case DW_TAG_interface_type: |
c906108c SS |
4699 | case DW_TAG_structure_type: |
4700 | case DW_TAG_union_type: | |
134d01f1 | 4701 | process_structure_scope (die, cu); |
c906108c SS |
4702 | break; |
4703 | case DW_TAG_enumeration_type: | |
134d01f1 | 4704 | process_enumeration_scope (die, cu); |
c906108c | 4705 | break; |
134d01f1 | 4706 | |
f792889a DJ |
4707 | /* These dies have a type, but processing them does not create |
4708 | a symbol or recurse to process the children. Therefore we can | |
4709 | read them on-demand through read_type_die. */ | |
c906108c | 4710 | case DW_TAG_subroutine_type: |
72019c9c | 4711 | case DW_TAG_set_type: |
c906108c | 4712 | case DW_TAG_array_type: |
c906108c | 4713 | case DW_TAG_pointer_type: |
c906108c | 4714 | case DW_TAG_ptr_to_member_type: |
c906108c | 4715 | case DW_TAG_reference_type: |
c906108c | 4716 | case DW_TAG_string_type: |
c906108c | 4717 | break; |
134d01f1 | 4718 | |
c906108c | 4719 | case DW_TAG_base_type: |
a02abb62 | 4720 | case DW_TAG_subrange_type: |
cb249c71 | 4721 | case DW_TAG_typedef: |
134d01f1 DJ |
4722 | /* Add a typedef symbol for the type definition, if it has a |
4723 | DW_AT_name. */ | |
f792889a | 4724 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 4725 | break; |
c906108c | 4726 | case DW_TAG_common_block: |
e7c27a73 | 4727 | read_common_block (die, cu); |
c906108c SS |
4728 | break; |
4729 | case DW_TAG_common_inclusion: | |
4730 | break; | |
d9fa45fe | 4731 | case DW_TAG_namespace: |
63d06c5c | 4732 | processing_has_namespace_info = 1; |
e7c27a73 | 4733 | read_namespace (die, cu); |
d9fa45fe | 4734 | break; |
5d7cb8df | 4735 | case DW_TAG_module: |
f55ee35c | 4736 | processing_has_namespace_info = 1; |
5d7cb8df JK |
4737 | read_module (die, cu); |
4738 | break; | |
d9fa45fe DC |
4739 | case DW_TAG_imported_declaration: |
4740 | case DW_TAG_imported_module: | |
63d06c5c | 4741 | processing_has_namespace_info = 1; |
27aa8d6a SW |
4742 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
4743 | || cu->language != language_fortran)) | |
4744 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
4745 | dwarf_tag_name (die->tag)); | |
4746 | read_import_statement (die, cu); | |
d9fa45fe | 4747 | break; |
c906108c | 4748 | default: |
e7c27a73 | 4749 | new_symbol (die, NULL, cu); |
c906108c SS |
4750 | break; |
4751 | } | |
4752 | } | |
4753 | ||
94af9270 KS |
4754 | /* A helper function for dwarf2_compute_name which determines whether DIE |
4755 | needs to have the name of the scope prepended to the name listed in the | |
4756 | die. */ | |
4757 | ||
4758 | static int | |
4759 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
4760 | { | |
1c809c68 TT |
4761 | struct attribute *attr; |
4762 | ||
94af9270 KS |
4763 | switch (die->tag) |
4764 | { | |
4765 | case DW_TAG_namespace: | |
4766 | case DW_TAG_typedef: | |
4767 | case DW_TAG_class_type: | |
4768 | case DW_TAG_interface_type: | |
4769 | case DW_TAG_structure_type: | |
4770 | case DW_TAG_union_type: | |
4771 | case DW_TAG_enumeration_type: | |
4772 | case DW_TAG_enumerator: | |
4773 | case DW_TAG_subprogram: | |
4774 | case DW_TAG_member: | |
4775 | return 1; | |
4776 | ||
4777 | case DW_TAG_variable: | |
c2b0a229 | 4778 | case DW_TAG_constant: |
94af9270 KS |
4779 | /* We only need to prefix "globally" visible variables. These include |
4780 | any variable marked with DW_AT_external or any variable that | |
4781 | lives in a namespace. [Variables in anonymous namespaces | |
4782 | require prefixing, but they are not DW_AT_external.] */ | |
4783 | ||
4784 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
4785 | { | |
4786 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 4787 | |
94af9270 KS |
4788 | return die_needs_namespace (die_specification (die, &spec_cu), |
4789 | spec_cu); | |
4790 | } | |
4791 | ||
1c809c68 | 4792 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
4793 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
4794 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
4795 | return 0; |
4796 | /* A variable in a lexical block of some kind does not need a | |
4797 | namespace, even though in C++ such variables may be external | |
4798 | and have a mangled name. */ | |
4799 | if (die->parent->tag == DW_TAG_lexical_block | |
4800 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
4801 | || die->parent->tag == DW_TAG_catch_block |
4802 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
4803 | return 0; |
4804 | return 1; | |
94af9270 KS |
4805 | |
4806 | default: | |
4807 | return 0; | |
4808 | } | |
4809 | } | |
4810 | ||
98bfdba5 PA |
4811 | /* Retrieve the last character from a mem_file. */ |
4812 | ||
4813 | static void | |
4814 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
4815 | { | |
4816 | char *last_char_p = (char *) object; | |
4817 | ||
4818 | if (length > 0) | |
4819 | *last_char_p = buffer[length - 1]; | |
4820 | } | |
4821 | ||
94af9270 KS |
4822 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
4823 | compute the physname for the object, which include a method's | |
4824 | formal parameters (C++/Java) and return type (Java). | |
4825 | ||
af6b7be1 JB |
4826 | For Ada, return the DIE's linkage name rather than the fully qualified |
4827 | name. PHYSNAME is ignored.. | |
4828 | ||
94af9270 KS |
4829 | The result is allocated on the objfile_obstack and canonicalized. */ |
4830 | ||
4831 | static const char * | |
4832 | dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu, | |
4833 | int physname) | |
4834 | { | |
4835 | if (name == NULL) | |
4836 | name = dwarf2_name (die, cu); | |
4837 | ||
f55ee35c JK |
4838 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
4839 | compute it by typename_concat inside GDB. */ | |
4840 | if (cu->language == language_ada | |
4841 | || (cu->language == language_fortran && physname)) | |
4842 | { | |
4843 | /* For Ada unit, we prefer the linkage name over the name, as | |
4844 | the former contains the exported name, which the user expects | |
4845 | to be able to reference. Ideally, we want the user to be able | |
4846 | to reference this entity using either natural or linkage name, | |
4847 | but we haven't started looking at this enhancement yet. */ | |
4848 | struct attribute *attr; | |
4849 | ||
4850 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
4851 | if (attr == NULL) | |
4852 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
4853 | if (attr && DW_STRING (attr)) | |
4854 | return DW_STRING (attr); | |
4855 | } | |
4856 | ||
94af9270 KS |
4857 | /* These are the only languages we know how to qualify names in. */ |
4858 | if (name != NULL | |
f55ee35c JK |
4859 | && (cu->language == language_cplus || cu->language == language_java |
4860 | || cu->language == language_fortran)) | |
94af9270 KS |
4861 | { |
4862 | if (die_needs_namespace (die, cu)) | |
4863 | { | |
4864 | long length; | |
4865 | char *prefix; | |
4866 | struct ui_file *buf; | |
4867 | ||
4868 | prefix = determine_prefix (die, cu); | |
4869 | buf = mem_fileopen (); | |
4870 | if (*prefix != '\0') | |
4871 | { | |
f55ee35c JK |
4872 | char *prefixed_name = typename_concat (NULL, prefix, name, |
4873 | physname, cu); | |
9a619af0 | 4874 | |
94af9270 KS |
4875 | fputs_unfiltered (prefixed_name, buf); |
4876 | xfree (prefixed_name); | |
4877 | } | |
4878 | else | |
62d5b8da | 4879 | fputs_unfiltered (name, buf); |
94af9270 | 4880 | |
98bfdba5 PA |
4881 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
4882 | as children with DW_TAG_template_type_param or | |
4883 | DW_TAG_value_type_param. If the latter, add them to the name | |
4884 | here. If the name already has template parameters, then | |
4885 | skip this step; some versions of GCC emit both, and | |
4886 | it is more efficient to use the pre-computed name. | |
4887 | ||
4888 | Something to keep in mind about this process: it is very | |
4889 | unlikely, or in some cases downright impossible, to produce | |
4890 | something that will match the mangled name of a function. | |
4891 | If the definition of the function has the same debug info, | |
4892 | we should be able to match up with it anyway. But fallbacks | |
4893 | using the minimal symbol, for instance to find a method | |
4894 | implemented in a stripped copy of libstdc++, will not work. | |
4895 | If we do not have debug info for the definition, we will have to | |
4896 | match them up some other way. | |
4897 | ||
4898 | When we do name matching there is a related problem with function | |
4899 | templates; two instantiated function templates are allowed to | |
4900 | differ only by their return types, which we do not add here. */ | |
4901 | ||
4902 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
4903 | { | |
4904 | struct attribute *attr; | |
4905 | struct die_info *child; | |
4906 | int first = 1; | |
4907 | ||
4908 | die->building_fullname = 1; | |
4909 | ||
4910 | for (child = die->child; child != NULL; child = child->sibling) | |
4911 | { | |
4912 | struct type *type; | |
4913 | long value; | |
4914 | gdb_byte *bytes; | |
4915 | struct dwarf2_locexpr_baton *baton; | |
4916 | struct value *v; | |
4917 | ||
4918 | if (child->tag != DW_TAG_template_type_param | |
4919 | && child->tag != DW_TAG_template_value_param) | |
4920 | continue; | |
4921 | ||
4922 | if (first) | |
4923 | { | |
4924 | fputs_unfiltered ("<", buf); | |
4925 | first = 0; | |
4926 | } | |
4927 | else | |
4928 | fputs_unfiltered (", ", buf); | |
4929 | ||
4930 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
4931 | if (attr == NULL) | |
4932 | { | |
4933 | complaint (&symfile_complaints, | |
4934 | _("template parameter missing DW_AT_type")); | |
4935 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
4936 | continue; | |
4937 | } | |
4938 | type = die_type (child, cu); | |
4939 | ||
4940 | if (child->tag == DW_TAG_template_type_param) | |
4941 | { | |
4942 | c_print_type (type, "", buf, -1, 0); | |
4943 | continue; | |
4944 | } | |
4945 | ||
4946 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
4947 | if (attr == NULL) | |
4948 | { | |
4949 | complaint (&symfile_complaints, | |
3e43a32a MS |
4950 | _("template parameter missing " |
4951 | "DW_AT_const_value")); | |
98bfdba5 PA |
4952 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
4953 | continue; | |
4954 | } | |
4955 | ||
4956 | dwarf2_const_value_attr (attr, type, name, | |
4957 | &cu->comp_unit_obstack, cu, | |
4958 | &value, &bytes, &baton); | |
4959 | ||
4960 | if (TYPE_NOSIGN (type)) | |
4961 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
4962 | changed, this can use value_print instead. */ | |
4963 | c_printchar (value, type, buf); | |
4964 | else | |
4965 | { | |
4966 | struct value_print_options opts; | |
4967 | ||
4968 | if (baton != NULL) | |
4969 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
4970 | baton->data, | |
4971 | baton->size, | |
4972 | baton->per_cu); | |
4973 | else if (bytes != NULL) | |
4974 | { | |
4975 | v = allocate_value (type); | |
4976 | memcpy (value_contents_writeable (v), bytes, | |
4977 | TYPE_LENGTH (type)); | |
4978 | } | |
4979 | else | |
4980 | v = value_from_longest (type, value); | |
4981 | ||
3e43a32a MS |
4982 | /* Specify decimal so that we do not depend on |
4983 | the radix. */ | |
98bfdba5 PA |
4984 | get_formatted_print_options (&opts, 'd'); |
4985 | opts.raw = 1; | |
4986 | value_print (v, buf, &opts); | |
4987 | release_value (v); | |
4988 | value_free (v); | |
4989 | } | |
4990 | } | |
4991 | ||
4992 | die->building_fullname = 0; | |
4993 | ||
4994 | if (!first) | |
4995 | { | |
4996 | /* Close the argument list, with a space if necessary | |
4997 | (nested templates). */ | |
4998 | char last_char = '\0'; | |
4999 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
5000 | if (last_char == '>') | |
5001 | fputs_unfiltered (" >", buf); | |
5002 | else | |
5003 | fputs_unfiltered (">", buf); | |
5004 | } | |
5005 | } | |
5006 | ||
94af9270 KS |
5007 | /* For Java and C++ methods, append formal parameter type |
5008 | information, if PHYSNAME. */ | |
6e70227d | 5009 | |
94af9270 KS |
5010 | if (physname && die->tag == DW_TAG_subprogram |
5011 | && (cu->language == language_cplus | |
5012 | || cu->language == language_java)) | |
5013 | { | |
5014 | struct type *type = read_type_die (die, cu); | |
5015 | ||
3167638f | 5016 | c_type_print_args (type, buf, 1, cu->language); |
94af9270 KS |
5017 | |
5018 | if (cu->language == language_java) | |
5019 | { | |
5020 | /* For java, we must append the return type to method | |
0963b4bd | 5021 | names. */ |
94af9270 KS |
5022 | if (die->tag == DW_TAG_subprogram) |
5023 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
5024 | 0, 0); | |
5025 | } | |
5026 | else if (cu->language == language_cplus) | |
5027 | { | |
60430eff DJ |
5028 | /* Assume that an artificial first parameter is |
5029 | "this", but do not crash if it is not. RealView | |
5030 | marks unnamed (and thus unused) parameters as | |
5031 | artificial; there is no way to differentiate | |
5032 | the two cases. */ | |
94af9270 KS |
5033 | if (TYPE_NFIELDS (type) > 0 |
5034 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 5035 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
5036 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
5037 | 0)))) | |
94af9270 KS |
5038 | fputs_unfiltered (" const", buf); |
5039 | } | |
5040 | } | |
5041 | ||
5042 | name = ui_file_obsavestring (buf, &cu->objfile->objfile_obstack, | |
5043 | &length); | |
5044 | ui_file_delete (buf); | |
5045 | ||
5046 | if (cu->language == language_cplus) | |
5047 | { | |
5048 | char *cname | |
5049 | = dwarf2_canonicalize_name (name, cu, | |
5050 | &cu->objfile->objfile_obstack); | |
9a619af0 | 5051 | |
94af9270 KS |
5052 | if (cname != NULL) |
5053 | name = cname; | |
5054 | } | |
5055 | } | |
5056 | } | |
5057 | ||
5058 | return name; | |
5059 | } | |
5060 | ||
0114d602 DJ |
5061 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
5062 | If scope qualifiers are appropriate they will be added. The result | |
5063 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
5064 | not have a name. NAME may either be from a previous call to |
5065 | dwarf2_name or NULL. | |
5066 | ||
0963b4bd | 5067 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
5068 | |
5069 | static const char * | |
94af9270 | 5070 | dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 5071 | { |
94af9270 KS |
5072 | return dwarf2_compute_name (name, die, cu, 0); |
5073 | } | |
0114d602 | 5074 | |
94af9270 KS |
5075 | /* Construct a physname for the given DIE in CU. NAME may either be |
5076 | from a previous call to dwarf2_name or NULL. The result will be | |
5077 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
5078 | name. | |
0114d602 | 5079 | |
94af9270 | 5080 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 5081 | |
94af9270 KS |
5082 | static const char * |
5083 | dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu) | |
5084 | { | |
5085 | return dwarf2_compute_name (name, die, cu, 1); | |
0114d602 DJ |
5086 | } |
5087 | ||
27aa8d6a SW |
5088 | /* Read the import statement specified by the given die and record it. */ |
5089 | ||
5090 | static void | |
5091 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
5092 | { | |
5093 | struct attribute *import_attr; | |
5094 | struct die_info *imported_die; | |
de4affc9 | 5095 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 5096 | const char *imported_name; |
794684b6 | 5097 | const char *imported_name_prefix; |
13387711 SW |
5098 | const char *canonical_name; |
5099 | const char *import_alias; | |
5100 | const char *imported_declaration = NULL; | |
794684b6 | 5101 | const char *import_prefix; |
13387711 SW |
5102 | |
5103 | char *temp; | |
27aa8d6a SW |
5104 | |
5105 | import_attr = dwarf2_attr (die, DW_AT_import, cu); | |
5106 | if (import_attr == NULL) | |
5107 | { | |
5108 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
5109 | dwarf_tag_name (die->tag)); | |
5110 | return; | |
5111 | } | |
5112 | ||
de4affc9 CC |
5113 | imported_cu = cu; |
5114 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
5115 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
5116 | if (imported_name == NULL) |
5117 | { | |
5118 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
5119 | ||
5120 | The import in the following code: | |
5121 | namespace A | |
5122 | { | |
5123 | typedef int B; | |
5124 | } | |
5125 | ||
5126 | int main () | |
5127 | { | |
5128 | using A::B; | |
5129 | B b; | |
5130 | return b; | |
5131 | } | |
5132 | ||
5133 | ... | |
5134 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
5135 | <52> DW_AT_decl_file : 1 | |
5136 | <53> DW_AT_decl_line : 6 | |
5137 | <54> DW_AT_import : <0x75> | |
5138 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
5139 | <59> DW_AT_name : B | |
5140 | <5b> DW_AT_decl_file : 1 | |
5141 | <5c> DW_AT_decl_line : 2 | |
5142 | <5d> DW_AT_type : <0x6e> | |
5143 | ... | |
5144 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
5145 | <76> DW_AT_byte_size : 4 | |
5146 | <77> DW_AT_encoding : 5 (signed) | |
5147 | ||
5148 | imports the wrong die ( 0x75 instead of 0x58 ). | |
5149 | This case will be ignored until the gcc bug is fixed. */ | |
5150 | return; | |
5151 | } | |
5152 | ||
82856980 SW |
5153 | /* Figure out the local name after import. */ |
5154 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 5155 | |
794684b6 SW |
5156 | /* Figure out where the statement is being imported to. */ |
5157 | import_prefix = determine_prefix (die, cu); | |
5158 | ||
5159 | /* Figure out what the scope of the imported die is and prepend it | |
5160 | to the name of the imported die. */ | |
de4affc9 | 5161 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 5162 | |
f55ee35c JK |
5163 | if (imported_die->tag != DW_TAG_namespace |
5164 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 5165 | { |
13387711 SW |
5166 | imported_declaration = imported_name; |
5167 | canonical_name = imported_name_prefix; | |
794684b6 | 5168 | } |
13387711 | 5169 | else if (strlen (imported_name_prefix) > 0) |
794684b6 | 5170 | { |
13387711 SW |
5171 | temp = alloca (strlen (imported_name_prefix) |
5172 | + 2 + strlen (imported_name) + 1); | |
5173 | strcpy (temp, imported_name_prefix); | |
5174 | strcat (temp, "::"); | |
5175 | strcat (temp, imported_name); | |
5176 | canonical_name = temp; | |
794684b6 | 5177 | } |
13387711 SW |
5178 | else |
5179 | canonical_name = imported_name; | |
794684b6 | 5180 | |
c0cc3a76 SW |
5181 | cp_add_using_directive (import_prefix, |
5182 | canonical_name, | |
5183 | import_alias, | |
13387711 | 5184 | imported_declaration, |
c0cc3a76 | 5185 | &cu->objfile->objfile_obstack); |
27aa8d6a SW |
5186 | } |
5187 | ||
5fb290d7 | 5188 | static void |
e142c38c | 5189 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 5190 | { |
e142c38c | 5191 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
5192 | } |
5193 | ||
ae2de4f8 DE |
5194 | /* Cleanup function for read_file_scope. */ |
5195 | ||
cb1df416 DJ |
5196 | static void |
5197 | free_cu_line_header (void *arg) | |
5198 | { | |
5199 | struct dwarf2_cu *cu = arg; | |
5200 | ||
5201 | free_line_header (cu->line_header); | |
5202 | cu->line_header = NULL; | |
5203 | } | |
5204 | ||
9291a0cd TT |
5205 | static void |
5206 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
5207 | char **name, char **comp_dir) | |
5208 | { | |
5209 | struct attribute *attr; | |
5210 | ||
5211 | *name = NULL; | |
5212 | *comp_dir = NULL; | |
5213 | ||
5214 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
5215 | is not a source language identifier. */ | |
5216 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
5217 | if (attr) | |
5218 | { | |
5219 | *name = DW_STRING (attr); | |
5220 | } | |
5221 | ||
5222 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
5223 | if (attr) | |
5224 | *comp_dir = DW_STRING (attr); | |
5225 | else if (*name != NULL && IS_ABSOLUTE_PATH (*name)) | |
5226 | { | |
5227 | *comp_dir = ldirname (*name); | |
5228 | if (*comp_dir != NULL) | |
5229 | make_cleanup (xfree, *comp_dir); | |
5230 | } | |
5231 | if (*comp_dir != NULL) | |
5232 | { | |
5233 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
5234 | directory, get rid of it. */ | |
5235 | char *cp = strchr (*comp_dir, ':'); | |
5236 | ||
5237 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
5238 | *comp_dir = cp + 1; | |
5239 | } | |
5240 | ||
5241 | if (*name == NULL) | |
5242 | *name = "<unknown>"; | |
5243 | } | |
5244 | ||
ae2de4f8 DE |
5245 | /* Process DW_TAG_compile_unit. */ |
5246 | ||
c906108c | 5247 | static void |
e7c27a73 | 5248 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5249 | { |
e7c27a73 | 5250 | struct objfile *objfile = cu->objfile; |
debd256d | 5251 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 5252 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
5253 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
5254 | struct attribute *attr; | |
e1024ff1 | 5255 | char *name = NULL; |
c906108c SS |
5256 | char *comp_dir = NULL; |
5257 | struct die_info *child_die; | |
5258 | bfd *abfd = objfile->obfd; | |
debd256d | 5259 | struct line_header *line_header = 0; |
e142c38c | 5260 | CORE_ADDR baseaddr; |
6e70227d | 5261 | |
e142c38c | 5262 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 5263 | |
fae299cd | 5264 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
5265 | |
5266 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
5267 | from finish_block. */ | |
2acceee2 | 5268 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
5269 | lowpc = highpc; |
5270 | lowpc += baseaddr; | |
5271 | highpc += baseaddr; | |
5272 | ||
9291a0cd | 5273 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 5274 | |
e142c38c | 5275 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
5276 | if (attr) |
5277 | { | |
e142c38c | 5278 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
5279 | } |
5280 | ||
b0f35d58 | 5281 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
6e70227d | 5282 | if (attr) |
b0f35d58 | 5283 | cu->producer = DW_STRING (attr); |
303b6f5d | 5284 | |
f4b8a18d KW |
5285 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
5286 | standardised yet. As a workaround for the language detection we fall | |
5287 | back to the DW_AT_producer string. */ | |
5288 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
5289 | cu->language = language_opencl; | |
5290 | ||
0963b4bd | 5291 | /* We assume that we're processing GCC output. */ |
c906108c | 5292 | processing_gcc_compilation = 2; |
c906108c | 5293 | |
df8a16a1 DJ |
5294 | processing_has_namespace_info = 0; |
5295 | ||
c906108c SS |
5296 | start_symtab (name, comp_dir, lowpc); |
5297 | record_debugformat ("DWARF 2"); | |
303b6f5d | 5298 | record_producer (cu->producer); |
c906108c | 5299 | |
e142c38c | 5300 | initialize_cu_func_list (cu); |
c906108c | 5301 | |
cb1df416 DJ |
5302 | /* Decode line number information if present. We do this before |
5303 | processing child DIEs, so that the line header table is available | |
5304 | for DW_AT_decl_file. */ | |
e142c38c | 5305 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
5306 | if (attr) |
5307 | { | |
debd256d | 5308 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 5309 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
5310 | if (line_header) |
5311 | { | |
cb1df416 DJ |
5312 | cu->line_header = line_header; |
5313 | make_cleanup (free_cu_line_header, cu); | |
aaa75496 | 5314 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 5315 | } |
5fb290d7 | 5316 | } |
debd256d | 5317 | |
cb1df416 DJ |
5318 | /* Process all dies in compilation unit. */ |
5319 | if (die->child != NULL) | |
5320 | { | |
5321 | child_die = die->child; | |
5322 | while (child_die && child_die->tag) | |
5323 | { | |
5324 | process_die (child_die, cu); | |
5325 | child_die = sibling_die (child_die); | |
5326 | } | |
5327 | } | |
5328 | ||
2e276125 JB |
5329 | /* Decode macro information, if present. Dwarf 2 macro information |
5330 | refers to information in the line number info statement program | |
5331 | header, so we can only read it if we've read the header | |
5332 | successfully. */ | |
e142c38c | 5333 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 5334 | if (attr && line_header) |
2e276125 JB |
5335 | { |
5336 | unsigned int macro_offset = DW_UNSND (attr); | |
9a619af0 | 5337 | |
2e276125 | 5338 | dwarf_decode_macros (line_header, macro_offset, |
e7c27a73 | 5339 | comp_dir, abfd, cu); |
2e276125 | 5340 | } |
debd256d | 5341 | do_cleanups (back_to); |
5fb290d7 DJ |
5342 | } |
5343 | ||
ae2de4f8 DE |
5344 | /* Process DW_TAG_type_unit. |
5345 | For TUs we want to skip the first top level sibling if it's not the | |
348e048f DE |
5346 | actual type being defined by this TU. In this case the first top |
5347 | level sibling is there to provide context only. */ | |
5348 | ||
5349 | static void | |
5350 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
5351 | { | |
5352 | struct objfile *objfile = cu->objfile; | |
5353 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
5354 | CORE_ADDR lowpc; | |
5355 | struct attribute *attr; | |
5356 | char *name = NULL; | |
5357 | char *comp_dir = NULL; | |
5358 | struct die_info *child_die; | |
5359 | bfd *abfd = objfile->obfd; | |
348e048f DE |
5360 | |
5361 | /* start_symtab needs a low pc, but we don't really have one. | |
5362 | Do what read_file_scope would do in the absence of such info. */ | |
5363 | lowpc = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5364 | ||
5365 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
5366 | is not a source language identifier. */ | |
5367 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
5368 | if (attr) | |
5369 | name = DW_STRING (attr); | |
5370 | ||
5371 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
5372 | if (attr) | |
5373 | comp_dir = DW_STRING (attr); | |
5374 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
5375 | { | |
5376 | comp_dir = ldirname (name); | |
5377 | if (comp_dir != NULL) | |
5378 | make_cleanup (xfree, comp_dir); | |
5379 | } | |
5380 | ||
5381 | if (name == NULL) | |
5382 | name = "<unknown>"; | |
5383 | ||
5384 | attr = dwarf2_attr (die, DW_AT_language, cu); | |
5385 | if (attr) | |
5386 | set_cu_language (DW_UNSND (attr), cu); | |
5387 | ||
5388 | /* This isn't technically needed today. It is done for symmetry | |
5389 | with read_file_scope. */ | |
5390 | attr = dwarf2_attr (die, DW_AT_producer, cu); | |
6e70227d | 5391 | if (attr) |
348e048f DE |
5392 | cu->producer = DW_STRING (attr); |
5393 | ||
0963b4bd | 5394 | /* We assume that we're processing GCC output. */ |
348e048f DE |
5395 | processing_gcc_compilation = 2; |
5396 | ||
5397 | processing_has_namespace_info = 0; | |
5398 | ||
5399 | start_symtab (name, comp_dir, lowpc); | |
5400 | record_debugformat ("DWARF 2"); | |
5401 | record_producer (cu->producer); | |
5402 | ||
5403 | /* Process the dies in the type unit. */ | |
5404 | if (die->child == NULL) | |
5405 | { | |
5406 | dump_die_for_error (die); | |
5407 | error (_("Dwarf Error: Missing children for type unit [in module %s]"), | |
5408 | bfd_get_filename (abfd)); | |
5409 | } | |
5410 | ||
5411 | child_die = die->child; | |
5412 | ||
5413 | while (child_die && child_die->tag) | |
5414 | { | |
5415 | process_die (child_die, cu); | |
5416 | ||
5417 | child_die = sibling_die (child_die); | |
5418 | } | |
5419 | ||
5420 | do_cleanups (back_to); | |
5421 | } | |
5422 | ||
5fb290d7 | 5423 | static void |
e142c38c DJ |
5424 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
5425 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
5426 | { |
5427 | struct function_range *thisfn; | |
5428 | ||
5429 | thisfn = (struct function_range *) | |
7b5a2f43 | 5430 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
5431 | thisfn->name = name; |
5432 | thisfn->lowpc = lowpc; | |
5433 | thisfn->highpc = highpc; | |
5434 | thisfn->seen_line = 0; | |
5435 | thisfn->next = NULL; | |
5436 | ||
e142c38c DJ |
5437 | if (cu->last_fn == NULL) |
5438 | cu->first_fn = thisfn; | |
5fb290d7 | 5439 | else |
e142c38c | 5440 | cu->last_fn->next = thisfn; |
5fb290d7 | 5441 | |
e142c38c | 5442 | cu->last_fn = thisfn; |
c906108c SS |
5443 | } |
5444 | ||
d389af10 JK |
5445 | /* qsort helper for inherit_abstract_dies. */ |
5446 | ||
5447 | static int | |
5448 | unsigned_int_compar (const void *ap, const void *bp) | |
5449 | { | |
5450 | unsigned int a = *(unsigned int *) ap; | |
5451 | unsigned int b = *(unsigned int *) bp; | |
5452 | ||
5453 | return (a > b) - (b > a); | |
5454 | } | |
5455 | ||
5456 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
5457 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
5458 | already referenced by DW_AT_abstract_origin from the children of the | |
5459 | current DIE. */ | |
d389af10 JK |
5460 | |
5461 | static void | |
5462 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
5463 | { | |
5464 | struct die_info *child_die; | |
5465 | unsigned die_children_count; | |
5466 | /* CU offsets which were referenced by children of the current DIE. */ | |
5467 | unsigned *offsets; | |
5468 | unsigned *offsets_end, *offsetp; | |
5469 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ | |
5470 | struct die_info *origin_die; | |
5471 | /* Iterator of the ORIGIN_DIE children. */ | |
5472 | struct die_info *origin_child_die; | |
5473 | struct cleanup *cleanups; | |
5474 | struct attribute *attr; | |
cd02d79d PA |
5475 | struct dwarf2_cu *origin_cu; |
5476 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
5477 | |
5478 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
5479 | if (!attr) | |
5480 | return; | |
5481 | ||
cd02d79d PA |
5482 | /* Note that following die references may follow to a die in a |
5483 | different cu. */ | |
5484 | ||
5485 | origin_cu = cu; | |
5486 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
5487 | ||
5488 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
5489 | symbols in. */ | |
5490 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
5491 | origin_cu->list_in_scope = cu->list_in_scope; | |
5492 | ||
edb3359d DJ |
5493 | if (die->tag != origin_die->tag |
5494 | && !(die->tag == DW_TAG_inlined_subroutine | |
5495 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
5496 | complaint (&symfile_complaints, |
5497 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
5498 | die->offset, origin_die->offset); | |
5499 | ||
5500 | child_die = die->child; | |
5501 | die_children_count = 0; | |
5502 | while (child_die && child_die->tag) | |
5503 | { | |
5504 | child_die = sibling_die (child_die); | |
5505 | die_children_count++; | |
5506 | } | |
5507 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
5508 | cleanups = make_cleanup (xfree, offsets); | |
5509 | ||
5510 | offsets_end = offsets; | |
5511 | child_die = die->child; | |
5512 | while (child_die && child_die->tag) | |
5513 | { | |
c38f313d DJ |
5514 | /* For each CHILD_DIE, find the corresponding child of |
5515 | ORIGIN_DIE. If there is more than one layer of | |
5516 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
5517 | but GCC versions at least through 4.4 generate this (GCC PR | |
5518 | 40573). */ | |
5519 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 5520 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 5521 | |
c38f313d DJ |
5522 | while (1) |
5523 | { | |
cd02d79d PA |
5524 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
5525 | child_origin_cu); | |
c38f313d DJ |
5526 | if (attr == NULL) |
5527 | break; | |
cd02d79d PA |
5528 | child_origin_die = follow_die_ref (child_origin_die, attr, |
5529 | &child_origin_cu); | |
c38f313d DJ |
5530 | } |
5531 | ||
d389af10 JK |
5532 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
5533 | counterpart may exist. */ | |
c38f313d | 5534 | if (child_origin_die != child_die) |
d389af10 | 5535 | { |
edb3359d DJ |
5536 | if (child_die->tag != child_origin_die->tag |
5537 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
5538 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
5539 | complaint (&symfile_complaints, |
5540 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
5541 | "different tags"), child_die->offset, | |
5542 | child_origin_die->offset); | |
c38f313d DJ |
5543 | if (child_origin_die->parent != origin_die) |
5544 | complaint (&symfile_complaints, | |
5545 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
5546 | "different parents"), child_die->offset, | |
5547 | child_origin_die->offset); | |
5548 | else | |
5549 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
5550 | } |
5551 | child_die = sibling_die (child_die); | |
5552 | } | |
5553 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
5554 | unsigned_int_compar); | |
5555 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
5556 | if (offsetp[-1] == *offsetp) | |
3e43a32a MS |
5557 | complaint (&symfile_complaints, |
5558 | _("Multiple children of DIE 0x%x refer " | |
5559 | "to DIE 0x%x as their abstract origin"), | |
d389af10 JK |
5560 | die->offset, *offsetp); |
5561 | ||
5562 | offsetp = offsets; | |
5563 | origin_child_die = origin_die->child; | |
5564 | while (origin_child_die && origin_child_die->tag) | |
5565 | { | |
5566 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
5567 | while (offsetp < offsets_end && *offsetp < origin_child_die->offset) | |
5568 | offsetp++; | |
5569 | if (offsetp >= offsets_end || *offsetp > origin_child_die->offset) | |
5570 | { | |
5571 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 5572 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
5573 | } |
5574 | origin_child_die = sibling_die (origin_child_die); | |
5575 | } | |
cd02d79d | 5576 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
5577 | |
5578 | do_cleanups (cleanups); | |
5579 | } | |
5580 | ||
c906108c | 5581 | static void |
e7c27a73 | 5582 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5583 | { |
e7c27a73 | 5584 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 5585 | struct context_stack *new; |
c906108c SS |
5586 | CORE_ADDR lowpc; |
5587 | CORE_ADDR highpc; | |
5588 | struct die_info *child_die; | |
edb3359d | 5589 | struct attribute *attr, *call_line, *call_file; |
c906108c | 5590 | char *name; |
e142c38c | 5591 | CORE_ADDR baseaddr; |
801e3a5b | 5592 | struct block *block; |
edb3359d | 5593 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
5594 | VEC (symbolp) *template_args = NULL; |
5595 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
5596 | |
5597 | if (inlined_func) | |
5598 | { | |
5599 | /* If we do not have call site information, we can't show the | |
5600 | caller of this inlined function. That's too confusing, so | |
5601 | only use the scope for local variables. */ | |
5602 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
5603 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
5604 | if (call_line == NULL || call_file == NULL) | |
5605 | { | |
5606 | read_lexical_block_scope (die, cu); | |
5607 | return; | |
5608 | } | |
5609 | } | |
c906108c | 5610 | |
e142c38c DJ |
5611 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
5612 | ||
94af9270 | 5613 | name = dwarf2_name (die, cu); |
c906108c | 5614 | |
e8d05480 JB |
5615 | /* Ignore functions with missing or empty names. These are actually |
5616 | illegal according to the DWARF standard. */ | |
5617 | if (name == NULL) | |
5618 | { | |
5619 | complaint (&symfile_complaints, | |
5620 | _("missing name for subprogram DIE at %d"), die->offset); | |
5621 | return; | |
5622 | } | |
5623 | ||
5624 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
5625 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
5626 | { | |
ae4d0c03 PM |
5627 | attr = dwarf2_attr (die, DW_AT_external, cu); |
5628 | if (!attr || !DW_UNSND (attr)) | |
5629 | complaint (&symfile_complaints, | |
3e43a32a MS |
5630 | _("cannot get low and high bounds " |
5631 | "for subprogram DIE at %d"), | |
ae4d0c03 | 5632 | die->offset); |
e8d05480 JB |
5633 | return; |
5634 | } | |
c906108c SS |
5635 | |
5636 | lowpc += baseaddr; | |
5637 | highpc += baseaddr; | |
5638 | ||
5fb290d7 | 5639 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 5640 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 5641 | |
34eaf542 TT |
5642 | /* If we have any template arguments, then we must allocate a |
5643 | different sort of symbol. */ | |
5644 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
5645 | { | |
5646 | if (child_die->tag == DW_TAG_template_type_param | |
5647 | || child_die->tag == DW_TAG_template_value_param) | |
5648 | { | |
5649 | templ_func = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5650 | struct template_symbol); | |
5651 | templ_func->base.is_cplus_template_function = 1; | |
5652 | break; | |
5653 | } | |
5654 | } | |
5655 | ||
c906108c | 5656 | new = push_context (0, lowpc); |
34eaf542 TT |
5657 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
5658 | (struct symbol *) templ_func); | |
4c2df51b | 5659 | |
4cecd739 DJ |
5660 | /* If there is a location expression for DW_AT_frame_base, record |
5661 | it. */ | |
e142c38c | 5662 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 5663 | if (attr) |
c034e007 AC |
5664 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
5665 | expression is being recorded directly in the function's symbol | |
5666 | and not in a separate frame-base object. I guess this hack is | |
5667 | to avoid adding some sort of frame-base adjunct/annex to the | |
5668 | function's symbol :-(. The problem with doing this is that it | |
5669 | results in a function symbol with a location expression that | |
5670 | has nothing to do with the location of the function, ouch! The | |
5671 | relationship should be: a function's symbol has-a frame base; a | |
5672 | frame-base has-a location expression. */ | |
e7c27a73 | 5673 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 5674 | |
e142c38c | 5675 | cu->list_in_scope = &local_symbols; |
c906108c | 5676 | |
639d11d3 | 5677 | if (die->child != NULL) |
c906108c | 5678 | { |
639d11d3 | 5679 | child_die = die->child; |
c906108c SS |
5680 | while (child_die && child_die->tag) |
5681 | { | |
34eaf542 TT |
5682 | if (child_die->tag == DW_TAG_template_type_param |
5683 | || child_die->tag == DW_TAG_template_value_param) | |
5684 | { | |
5685 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
5686 | ||
f1078f66 DJ |
5687 | if (arg != NULL) |
5688 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
5689 | } |
5690 | else | |
5691 | process_die (child_die, cu); | |
c906108c SS |
5692 | child_die = sibling_die (child_die); |
5693 | } | |
5694 | } | |
5695 | ||
d389af10 JK |
5696 | inherit_abstract_dies (die, cu); |
5697 | ||
4a811a97 UW |
5698 | /* If we have a DW_AT_specification, we might need to import using |
5699 | directives from the context of the specification DIE. See the | |
5700 | comment in determine_prefix. */ | |
5701 | if (cu->language == language_cplus | |
5702 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
5703 | { | |
5704 | struct dwarf2_cu *spec_cu = cu; | |
5705 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
5706 | ||
5707 | while (spec_die) | |
5708 | { | |
5709 | child_die = spec_die->child; | |
5710 | while (child_die && child_die->tag) | |
5711 | { | |
5712 | if (child_die->tag == DW_TAG_imported_module) | |
5713 | process_die (child_die, spec_cu); | |
5714 | child_die = sibling_die (child_die); | |
5715 | } | |
5716 | ||
5717 | /* In some cases, GCC generates specification DIEs that | |
5718 | themselves contain DW_AT_specification attributes. */ | |
5719 | spec_die = die_specification (spec_die, &spec_cu); | |
5720 | } | |
5721 | } | |
5722 | ||
c906108c SS |
5723 | new = pop_context (); |
5724 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
5725 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
5726 | lowpc, highpc, objfile); | |
5727 | ||
df8a16a1 | 5728 | /* For C++, set the block's scope. */ |
f55ee35c | 5729 | if (cu->language == language_cplus || cu->language == language_fortran) |
df8a16a1 | 5730 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, |
0114d602 | 5731 | determine_prefix (die, cu), |
df8a16a1 DJ |
5732 | processing_has_namespace_info); |
5733 | ||
801e3a5b JB |
5734 | /* If we have address ranges, record them. */ |
5735 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 5736 | |
34eaf542 TT |
5737 | /* Attach template arguments to function. */ |
5738 | if (! VEC_empty (symbolp, template_args)) | |
5739 | { | |
5740 | gdb_assert (templ_func != NULL); | |
5741 | ||
5742 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
5743 | templ_func->template_arguments | |
5744 | = obstack_alloc (&objfile->objfile_obstack, | |
5745 | (templ_func->n_template_arguments | |
5746 | * sizeof (struct symbol *))); | |
5747 | memcpy (templ_func->template_arguments, | |
5748 | VEC_address (symbolp, template_args), | |
5749 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
5750 | VEC_free (symbolp, template_args); | |
5751 | } | |
5752 | ||
208d8187 JB |
5753 | /* In C++, we can have functions nested inside functions (e.g., when |
5754 | a function declares a class that has methods). This means that | |
5755 | when we finish processing a function scope, we may need to go | |
5756 | back to building a containing block's symbol lists. */ | |
5757 | local_symbols = new->locals; | |
5758 | param_symbols = new->params; | |
27aa8d6a | 5759 | using_directives = new->using_directives; |
208d8187 | 5760 | |
921e78cf JB |
5761 | /* If we've finished processing a top-level function, subsequent |
5762 | symbols go in the file symbol list. */ | |
5763 | if (outermost_context_p ()) | |
e142c38c | 5764 | cu->list_in_scope = &file_symbols; |
c906108c SS |
5765 | } |
5766 | ||
5767 | /* Process all the DIES contained within a lexical block scope. Start | |
5768 | a new scope, process the dies, and then close the scope. */ | |
5769 | ||
5770 | static void | |
e7c27a73 | 5771 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5772 | { |
e7c27a73 | 5773 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 5774 | struct context_stack *new; |
c906108c SS |
5775 | CORE_ADDR lowpc, highpc; |
5776 | struct die_info *child_die; | |
e142c38c DJ |
5777 | CORE_ADDR baseaddr; |
5778 | ||
5779 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
5780 | |
5781 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
5782 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
5783 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 5784 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 5785 | describe ranges. */ |
d85a05f0 | 5786 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
5787 | return; |
5788 | lowpc += baseaddr; | |
5789 | highpc += baseaddr; | |
5790 | ||
5791 | push_context (0, lowpc); | |
639d11d3 | 5792 | if (die->child != NULL) |
c906108c | 5793 | { |
639d11d3 | 5794 | child_die = die->child; |
c906108c SS |
5795 | while (child_die && child_die->tag) |
5796 | { | |
e7c27a73 | 5797 | process_die (child_die, cu); |
c906108c SS |
5798 | child_die = sibling_die (child_die); |
5799 | } | |
5800 | } | |
5801 | new = pop_context (); | |
5802 | ||
8540c487 | 5803 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 5804 | { |
801e3a5b JB |
5805 | struct block *block |
5806 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
5807 | highpc, objfile); | |
5808 | ||
5809 | /* Note that recording ranges after traversing children, as we | |
5810 | do here, means that recording a parent's ranges entails | |
5811 | walking across all its children's ranges as they appear in | |
5812 | the address map, which is quadratic behavior. | |
5813 | ||
5814 | It would be nicer to record the parent's ranges before | |
5815 | traversing its children, simply overriding whatever you find | |
5816 | there. But since we don't even decide whether to create a | |
5817 | block until after we've traversed its children, that's hard | |
5818 | to do. */ | |
5819 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
5820 | } |
5821 | local_symbols = new->locals; | |
27aa8d6a | 5822 | using_directives = new->using_directives; |
c906108c SS |
5823 | } |
5824 | ||
43039443 | 5825 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
5826 | Return 1 if the attributes are present and valid, otherwise, return 0. |
5827 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
5828 | |
5829 | static int | |
5830 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
5831 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
5832 | struct partial_symtab *ranges_pst) | |
43039443 JK |
5833 | { |
5834 | struct objfile *objfile = cu->objfile; | |
5835 | struct comp_unit_head *cu_header = &cu->header; | |
5836 | bfd *obfd = objfile->obfd; | |
5837 | unsigned int addr_size = cu_header->addr_size; | |
5838 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
5839 | /* Base address selection entry. */ | |
5840 | CORE_ADDR base; | |
5841 | int found_base; | |
5842 | unsigned int dummy; | |
5843 | gdb_byte *buffer; | |
5844 | CORE_ADDR marker; | |
5845 | int low_set; | |
5846 | CORE_ADDR low = 0; | |
5847 | CORE_ADDR high = 0; | |
ff013f42 | 5848 | CORE_ADDR baseaddr; |
43039443 | 5849 | |
d00adf39 DE |
5850 | found_base = cu->base_known; |
5851 | base = cu->base_address; | |
43039443 | 5852 | |
be391dca | 5853 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 5854 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
5855 | { |
5856 | complaint (&symfile_complaints, | |
5857 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
5858 | offset); | |
5859 | return 0; | |
5860 | } | |
dce234bc | 5861 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
5862 | |
5863 | /* Read in the largest possible address. */ | |
5864 | marker = read_address (obfd, buffer, cu, &dummy); | |
5865 | if ((marker & mask) == mask) | |
5866 | { | |
5867 | /* If we found the largest possible address, then | |
5868 | read the base address. */ | |
5869 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
5870 | buffer += 2 * addr_size; | |
5871 | offset += 2 * addr_size; | |
5872 | found_base = 1; | |
5873 | } | |
5874 | ||
5875 | low_set = 0; | |
5876 | ||
e7030f15 | 5877 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 5878 | |
43039443 JK |
5879 | while (1) |
5880 | { | |
5881 | CORE_ADDR range_beginning, range_end; | |
5882 | ||
5883 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
5884 | buffer += addr_size; | |
5885 | range_end = read_address (obfd, buffer, cu, &dummy); | |
5886 | buffer += addr_size; | |
5887 | offset += 2 * addr_size; | |
5888 | ||
5889 | /* An end of list marker is a pair of zero addresses. */ | |
5890 | if (range_beginning == 0 && range_end == 0) | |
5891 | /* Found the end of list entry. */ | |
5892 | break; | |
5893 | ||
5894 | /* Each base address selection entry is a pair of 2 values. | |
5895 | The first is the largest possible address, the second is | |
5896 | the base address. Check for a base address here. */ | |
5897 | if ((range_beginning & mask) == mask) | |
5898 | { | |
5899 | /* If we found the largest possible address, then | |
5900 | read the base address. */ | |
5901 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
5902 | found_base = 1; | |
5903 | continue; | |
5904 | } | |
5905 | ||
5906 | if (!found_base) | |
5907 | { | |
5908 | /* We have no valid base address for the ranges | |
5909 | data. */ | |
5910 | complaint (&symfile_complaints, | |
5911 | _("Invalid .debug_ranges data (no base address)")); | |
5912 | return 0; | |
5913 | } | |
5914 | ||
9277c30c UW |
5915 | if (range_beginning > range_end) |
5916 | { | |
5917 | /* Inverted range entries are invalid. */ | |
5918 | complaint (&symfile_complaints, | |
5919 | _("Invalid .debug_ranges data (inverted range)")); | |
5920 | return 0; | |
5921 | } | |
5922 | ||
5923 | /* Empty range entries have no effect. */ | |
5924 | if (range_beginning == range_end) | |
5925 | continue; | |
5926 | ||
43039443 JK |
5927 | range_beginning += base; |
5928 | range_end += base; | |
5929 | ||
9277c30c | 5930 | if (ranges_pst != NULL) |
ff013f42 | 5931 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
5932 | range_beginning + baseaddr, |
5933 | range_end - 1 + baseaddr, | |
ff013f42 JK |
5934 | ranges_pst); |
5935 | ||
43039443 JK |
5936 | /* FIXME: This is recording everything as a low-high |
5937 | segment of consecutive addresses. We should have a | |
5938 | data structure for discontiguous block ranges | |
5939 | instead. */ | |
5940 | if (! low_set) | |
5941 | { | |
5942 | low = range_beginning; | |
5943 | high = range_end; | |
5944 | low_set = 1; | |
5945 | } | |
5946 | else | |
5947 | { | |
5948 | if (range_beginning < low) | |
5949 | low = range_beginning; | |
5950 | if (range_end > high) | |
5951 | high = range_end; | |
5952 | } | |
5953 | } | |
5954 | ||
5955 | if (! low_set) | |
5956 | /* If the first entry is an end-of-list marker, the range | |
5957 | describes an empty scope, i.e. no instructions. */ | |
5958 | return 0; | |
5959 | ||
5960 | if (low_return) | |
5961 | *low_return = low; | |
5962 | if (high_return) | |
5963 | *high_return = high; | |
5964 | return 1; | |
5965 | } | |
5966 | ||
af34e669 DJ |
5967 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
5968 | are present and valid, otherwise, return 0. Return -1 if the range is | |
5969 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 5970 | static int |
af34e669 | 5971 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
5972 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
5973 | struct partial_symtab *pst) | |
c906108c SS |
5974 | { |
5975 | struct attribute *attr; | |
af34e669 DJ |
5976 | CORE_ADDR low = 0; |
5977 | CORE_ADDR high = 0; | |
5978 | int ret = 0; | |
c906108c | 5979 | |
e142c38c | 5980 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 5981 | if (attr) |
af34e669 DJ |
5982 | { |
5983 | high = DW_ADDR (attr); | |
e142c38c | 5984 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
5985 | if (attr) |
5986 | low = DW_ADDR (attr); | |
5987 | else | |
5988 | /* Found high w/o low attribute. */ | |
5989 | return 0; | |
5990 | ||
5991 | /* Found consecutive range of addresses. */ | |
5992 | ret = 1; | |
5993 | } | |
c906108c | 5994 | else |
af34e669 | 5995 | { |
e142c38c | 5996 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
5997 | if (attr != NULL) |
5998 | { | |
af34e669 | 5999 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 6000 | .debug_ranges section. */ |
d85a05f0 | 6001 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, pst)) |
af34e669 | 6002 | return 0; |
43039443 | 6003 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
6004 | ret = -1; |
6005 | } | |
6006 | } | |
c906108c | 6007 | |
9373cf26 JK |
6008 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
6009 | if (high <= low) | |
c906108c SS |
6010 | return 0; |
6011 | ||
6012 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
6013 | eliminate duplicate copies of functions and vtables and such. | |
6014 | The linker will arbitrarily choose one and discard the others. | |
6015 | The AT_*_pc values for such functions refer to local labels in | |
6016 | these sections. If the section from that file was discarded, the | |
6017 | labels are not in the output, so the relocs get a value of 0. | |
6018 | If this is a discarded function, mark the pc bounds as invalid, | |
6019 | so that GDB will ignore it. */ | |
72dca2f5 | 6020 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
6021 | return 0; |
6022 | ||
6023 | *lowpc = low; | |
6024 | *highpc = high; | |
af34e669 | 6025 | return ret; |
c906108c SS |
6026 | } |
6027 | ||
b084d499 JB |
6028 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
6029 | its low and high PC addresses. Do nothing if these addresses could not | |
6030 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
6031 | and HIGHPC to the high address if greater than HIGHPC. */ | |
6032 | ||
6033 | static void | |
6034 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
6035 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
6036 | struct dwarf2_cu *cu) | |
6037 | { | |
6038 | CORE_ADDR low, high; | |
6039 | struct die_info *child = die->child; | |
6040 | ||
d85a05f0 | 6041 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
6042 | { |
6043 | *lowpc = min (*lowpc, low); | |
6044 | *highpc = max (*highpc, high); | |
6045 | } | |
6046 | ||
6047 | /* If the language does not allow nested subprograms (either inside | |
6048 | subprograms or lexical blocks), we're done. */ | |
6049 | if (cu->language != language_ada) | |
6050 | return; | |
6e70227d | 6051 | |
b084d499 JB |
6052 | /* Check all the children of the given DIE. If it contains nested |
6053 | subprograms, then check their pc bounds. Likewise, we need to | |
6054 | check lexical blocks as well, as they may also contain subprogram | |
6055 | definitions. */ | |
6056 | while (child && child->tag) | |
6057 | { | |
6058 | if (child->tag == DW_TAG_subprogram | |
6059 | || child->tag == DW_TAG_lexical_block) | |
6060 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
6061 | child = sibling_die (child); | |
6062 | } | |
6063 | } | |
6064 | ||
fae299cd DC |
6065 | /* Get the low and high pc's represented by the scope DIE, and store |
6066 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
6067 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
6068 | ||
6069 | static void | |
6070 | get_scope_pc_bounds (struct die_info *die, | |
6071 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
6072 | struct dwarf2_cu *cu) | |
6073 | { | |
6074 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
6075 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
6076 | CORE_ADDR current_low, current_high; | |
6077 | ||
d85a05f0 | 6078 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
6079 | { |
6080 | best_low = current_low; | |
6081 | best_high = current_high; | |
6082 | } | |
6083 | else | |
6084 | { | |
6085 | struct die_info *child = die->child; | |
6086 | ||
6087 | while (child && child->tag) | |
6088 | { | |
6089 | switch (child->tag) { | |
6090 | case DW_TAG_subprogram: | |
b084d499 | 6091 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
6092 | break; |
6093 | case DW_TAG_namespace: | |
f55ee35c | 6094 | case DW_TAG_module: |
fae299cd DC |
6095 | /* FIXME: carlton/2004-01-16: Should we do this for |
6096 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
6097 | that current GCC's always emit the DIEs corresponding | |
6098 | to definitions of methods of classes as children of a | |
6099 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
6100 | the DIEs giving the declarations, which could be | |
6101 | anywhere). But I don't see any reason why the | |
6102 | standards says that they have to be there. */ | |
6103 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
6104 | ||
6105 | if (current_low != ((CORE_ADDR) -1)) | |
6106 | { | |
6107 | best_low = min (best_low, current_low); | |
6108 | best_high = max (best_high, current_high); | |
6109 | } | |
6110 | break; | |
6111 | default: | |
0963b4bd | 6112 | /* Ignore. */ |
fae299cd DC |
6113 | break; |
6114 | } | |
6115 | ||
6116 | child = sibling_die (child); | |
6117 | } | |
6118 | } | |
6119 | ||
6120 | *lowpc = best_low; | |
6121 | *highpc = best_high; | |
6122 | } | |
6123 | ||
801e3a5b JB |
6124 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
6125 | in DIE. */ | |
6126 | static void | |
6127 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
6128 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
6129 | { | |
6130 | struct attribute *attr; | |
6131 | ||
6132 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); | |
6133 | if (attr) | |
6134 | { | |
6135 | CORE_ADDR high = DW_ADDR (attr); | |
9a619af0 | 6136 | |
801e3a5b JB |
6137 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
6138 | if (attr) | |
6139 | { | |
6140 | CORE_ADDR low = DW_ADDR (attr); | |
9a619af0 | 6141 | |
801e3a5b JB |
6142 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
6143 | } | |
6144 | } | |
6145 | ||
6146 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
6147 | if (attr) | |
6148 | { | |
6149 | bfd *obfd = cu->objfile->obfd; | |
6150 | ||
6151 | /* The value of the DW_AT_ranges attribute is the offset of the | |
6152 | address range list in the .debug_ranges section. */ | |
6153 | unsigned long offset = DW_UNSND (attr); | |
dce234bc | 6154 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
6155 | |
6156 | /* For some target architectures, but not others, the | |
6157 | read_address function sign-extends the addresses it returns. | |
6158 | To recognize base address selection entries, we need a | |
6159 | mask. */ | |
6160 | unsigned int addr_size = cu->header.addr_size; | |
6161 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
6162 | ||
6163 | /* The base address, to which the next pair is relative. Note | |
6164 | that this 'base' is a DWARF concept: most entries in a range | |
6165 | list are relative, to reduce the number of relocs against the | |
6166 | debugging information. This is separate from this function's | |
6167 | 'baseaddr' argument, which GDB uses to relocate debugging | |
6168 | information from a shared library based on the address at | |
6169 | which the library was loaded. */ | |
d00adf39 DE |
6170 | CORE_ADDR base = cu->base_address; |
6171 | int base_known = cu->base_known; | |
801e3a5b | 6172 | |
be391dca | 6173 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 6174 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
6175 | { |
6176 | complaint (&symfile_complaints, | |
6177 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
6178 | offset); | |
6179 | return; | |
6180 | } | |
6181 | ||
6182 | for (;;) | |
6183 | { | |
6184 | unsigned int bytes_read; | |
6185 | CORE_ADDR start, end; | |
6186 | ||
6187 | start = read_address (obfd, buffer, cu, &bytes_read); | |
6188 | buffer += bytes_read; | |
6189 | end = read_address (obfd, buffer, cu, &bytes_read); | |
6190 | buffer += bytes_read; | |
6191 | ||
6192 | /* Did we find the end of the range list? */ | |
6193 | if (start == 0 && end == 0) | |
6194 | break; | |
6195 | ||
6196 | /* Did we find a base address selection entry? */ | |
6197 | else if ((start & base_select_mask) == base_select_mask) | |
6198 | { | |
6199 | base = end; | |
6200 | base_known = 1; | |
6201 | } | |
6202 | ||
6203 | /* We found an ordinary address range. */ | |
6204 | else | |
6205 | { | |
6206 | if (!base_known) | |
6207 | { | |
6208 | complaint (&symfile_complaints, | |
3e43a32a MS |
6209 | _("Invalid .debug_ranges data " |
6210 | "(no base address)")); | |
801e3a5b JB |
6211 | return; |
6212 | } | |
6213 | ||
9277c30c UW |
6214 | if (start > end) |
6215 | { | |
6216 | /* Inverted range entries are invalid. */ | |
6217 | complaint (&symfile_complaints, | |
6218 | _("Invalid .debug_ranges data " | |
6219 | "(inverted range)")); | |
6220 | return; | |
6221 | } | |
6222 | ||
6223 | /* Empty range entries have no effect. */ | |
6224 | if (start == end) | |
6225 | continue; | |
6226 | ||
6e70227d DE |
6227 | record_block_range (block, |
6228 | baseaddr + base + start, | |
801e3a5b JB |
6229 | baseaddr + base + end - 1); |
6230 | } | |
6231 | } | |
6232 | } | |
6233 | } | |
6234 | ||
60d5a603 JK |
6235 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
6236 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
6237 | during 4.6.0 experimental. */ | |
6238 | ||
6239 | static int | |
6240 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
6241 | { | |
6242 | const char *cs; | |
6243 | int major, minor, release; | |
6244 | ||
6245 | if (cu->producer == NULL) | |
6246 | { | |
6247 | /* For unknown compilers expect their behavior is DWARF version | |
6248 | compliant. | |
6249 | ||
6250 | GCC started to support .debug_types sections by -gdwarf-4 since | |
6251 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
6252 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
6253 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
6254 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
6255 | ||
6256 | return 0; | |
6257 | } | |
6258 | ||
6259 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ | |
6260 | ||
6261 | if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) != 0) | |
6262 | { | |
6263 | /* For non-GCC compilers expect their behavior is DWARF version | |
6264 | compliant. */ | |
6265 | ||
6266 | return 0; | |
6267 | } | |
6268 | cs = &cu->producer[strlen ("GNU ")]; | |
6269 | while (*cs && !isdigit (*cs)) | |
6270 | cs++; | |
6271 | if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3) | |
6272 | { | |
6273 | /* Not recognized as GCC. */ | |
6274 | ||
6275 | return 0; | |
6276 | } | |
6277 | ||
6278 | return major < 4 || (major == 4 && minor < 6); | |
6279 | } | |
6280 | ||
6281 | /* Return the default accessibility type if it is not overriden by | |
6282 | DW_AT_accessibility. */ | |
6283 | ||
6284 | static enum dwarf_access_attribute | |
6285 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
6286 | { | |
6287 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
6288 | { | |
6289 | /* The default DWARF 2 accessibility for members is public, the default | |
6290 | accessibility for inheritance is private. */ | |
6291 | ||
6292 | if (die->tag != DW_TAG_inheritance) | |
6293 | return DW_ACCESS_public; | |
6294 | else | |
6295 | return DW_ACCESS_private; | |
6296 | } | |
6297 | else | |
6298 | { | |
6299 | /* DWARF 3+ defines the default accessibility a different way. The same | |
6300 | rules apply now for DW_TAG_inheritance as for the members and it only | |
6301 | depends on the container kind. */ | |
6302 | ||
6303 | if (die->parent->tag == DW_TAG_class_type) | |
6304 | return DW_ACCESS_private; | |
6305 | else | |
6306 | return DW_ACCESS_public; | |
6307 | } | |
6308 | } | |
6309 | ||
c906108c SS |
6310 | /* Add an aggregate field to the field list. */ |
6311 | ||
6312 | static void | |
107d2387 | 6313 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 6314 | struct dwarf2_cu *cu) |
6e70227d | 6315 | { |
e7c27a73 | 6316 | struct objfile *objfile = cu->objfile; |
5e2b427d | 6317 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
6318 | struct nextfield *new_field; |
6319 | struct attribute *attr; | |
6320 | struct field *fp; | |
6321 | char *fieldname = ""; | |
6322 | ||
6323 | /* Allocate a new field list entry and link it in. */ | |
6324 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 6325 | make_cleanup (xfree, new_field); |
c906108c | 6326 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
6327 | |
6328 | if (die->tag == DW_TAG_inheritance) | |
6329 | { | |
6330 | new_field->next = fip->baseclasses; | |
6331 | fip->baseclasses = new_field; | |
6332 | } | |
6333 | else | |
6334 | { | |
6335 | new_field->next = fip->fields; | |
6336 | fip->fields = new_field; | |
6337 | } | |
c906108c SS |
6338 | fip->nfields++; |
6339 | ||
e142c38c | 6340 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
6341 | if (attr) |
6342 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
6343 | else |
6344 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
6345 | if (new_field->accessibility != DW_ACCESS_public) |
6346 | fip->non_public_fields = 1; | |
60d5a603 | 6347 | |
e142c38c | 6348 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
6349 | if (attr) |
6350 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
6351 | else |
6352 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
6353 | |
6354 | fp = &new_field->field; | |
a9a9bd0f | 6355 | |
e142c38c | 6356 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 6357 | { |
a9a9bd0f | 6358 | /* Data member other than a C++ static data member. */ |
6e70227d | 6359 | |
c906108c | 6360 | /* Get type of field. */ |
e7c27a73 | 6361 | fp->type = die_type (die, cu); |
c906108c | 6362 | |
d6a843b5 | 6363 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 6364 | |
c906108c | 6365 | /* Get bit size of field (zero if none). */ |
e142c38c | 6366 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
6367 | if (attr) |
6368 | { | |
6369 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
6370 | } | |
6371 | else | |
6372 | { | |
6373 | FIELD_BITSIZE (*fp) = 0; | |
6374 | } | |
6375 | ||
6376 | /* Get bit offset of field. */ | |
e142c38c | 6377 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
6378 | if (attr) |
6379 | { | |
d4b96c9a | 6380 | int byte_offset = 0; |
c6a0999f | 6381 | |
3690dd37 | 6382 | if (attr_form_is_section_offset (attr)) |
d4b96c9a | 6383 | dwarf2_complex_location_expr_complaint (); |
3690dd37 | 6384 | else if (attr_form_is_constant (attr)) |
c6a0999f | 6385 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); |
d4b96c9a | 6386 | else if (attr_form_is_block (attr)) |
c6a0999f | 6387 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); |
d4b96c9a JK |
6388 | else |
6389 | dwarf2_complex_location_expr_complaint (); | |
c6a0999f | 6390 | |
d6a843b5 | 6391 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); |
c906108c | 6392 | } |
e142c38c | 6393 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
6394 | if (attr) |
6395 | { | |
5e2b427d | 6396 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
6397 | { |
6398 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
6399 | additional bit offset from the MSB of the containing |
6400 | anonymous object to the MSB of the field. We don't | |
6401 | have to do anything special since we don't need to | |
6402 | know the size of the anonymous object. */ | |
c906108c SS |
6403 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
6404 | } | |
6405 | else | |
6406 | { | |
6407 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
6408 | MSB of the anonymous object, subtract off the number of |
6409 | bits from the MSB of the field to the MSB of the | |
6410 | object, and then subtract off the number of bits of | |
6411 | the field itself. The result is the bit offset of | |
6412 | the LSB of the field. */ | |
c906108c SS |
6413 | int anonymous_size; |
6414 | int bit_offset = DW_UNSND (attr); | |
6415 | ||
e142c38c | 6416 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
6417 | if (attr) |
6418 | { | |
6419 | /* The size of the anonymous object containing | |
6420 | the bit field is explicit, so use the | |
6421 | indicated size (in bytes). */ | |
6422 | anonymous_size = DW_UNSND (attr); | |
6423 | } | |
6424 | else | |
6425 | { | |
6426 | /* The size of the anonymous object containing | |
6427 | the bit field must be inferred from the type | |
6428 | attribute of the data member containing the | |
6429 | bit field. */ | |
6430 | anonymous_size = TYPE_LENGTH (fp->type); | |
6431 | } | |
6432 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
6433 | - bit_offset - FIELD_BITSIZE (*fp); | |
6434 | } | |
6435 | } | |
6436 | ||
6437 | /* Get name of field. */ | |
39cbfefa DJ |
6438 | fieldname = dwarf2_name (die, cu); |
6439 | if (fieldname == NULL) | |
6440 | fieldname = ""; | |
d8151005 DJ |
6441 | |
6442 | /* The name is already allocated along with this objfile, so we don't | |
6443 | need to duplicate it for the type. */ | |
6444 | fp->name = fieldname; | |
c906108c SS |
6445 | |
6446 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 6447 | pointer or virtual base class pointer) to private. */ |
e142c38c | 6448 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 6449 | { |
d48cc9dd | 6450 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
6451 | new_field->accessibility = DW_ACCESS_private; |
6452 | fip->non_public_fields = 1; | |
6453 | } | |
6454 | } | |
a9a9bd0f | 6455 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 6456 | { |
a9a9bd0f DC |
6457 | /* C++ static member. */ |
6458 | ||
6459 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
6460 | is a declaration, but all versions of G++ as of this writing | |
6461 | (so through at least 3.2.1) incorrectly generate | |
6462 | DW_TAG_variable tags. */ | |
6e70227d | 6463 | |
c906108c | 6464 | char *physname; |
c906108c | 6465 | |
a9a9bd0f | 6466 | /* Get name of field. */ |
39cbfefa DJ |
6467 | fieldname = dwarf2_name (die, cu); |
6468 | if (fieldname == NULL) | |
c906108c SS |
6469 | return; |
6470 | ||
254e6b9e | 6471 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
6472 | if (attr |
6473 | /* Only create a symbol if this is an external value. | |
6474 | new_symbol checks this and puts the value in the global symbol | |
6475 | table, which we want. If it is not external, new_symbol | |
6476 | will try to put the value in cu->list_in_scope which is wrong. */ | |
6477 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
6478 | { |
6479 | /* A static const member, not much different than an enum as far as | |
6480 | we're concerned, except that we can support more types. */ | |
6481 | new_symbol (die, NULL, cu); | |
6482 | } | |
6483 | ||
2df3850c | 6484 | /* Get physical name. */ |
94af9270 | 6485 | physname = (char *) dwarf2_physname (fieldname, die, cu); |
c906108c | 6486 | |
d8151005 DJ |
6487 | /* The name is already allocated along with this objfile, so we don't |
6488 | need to duplicate it for the type. */ | |
6489 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 6490 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 6491 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
6492 | } |
6493 | else if (die->tag == DW_TAG_inheritance) | |
6494 | { | |
6495 | /* C++ base class field. */ | |
e142c38c | 6496 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 6497 | if (attr) |
d4b96c9a JK |
6498 | { |
6499 | int byte_offset = 0; | |
6500 | ||
6501 | if (attr_form_is_section_offset (attr)) | |
6502 | dwarf2_complex_location_expr_complaint (); | |
6503 | else if (attr_form_is_constant (attr)) | |
6504 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); | |
6505 | else if (attr_form_is_block (attr)) | |
6506 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); | |
6507 | else | |
6508 | dwarf2_complex_location_expr_complaint (); | |
6509 | ||
6510 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); | |
6511 | } | |
c906108c | 6512 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 6513 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
6514 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
6515 | fip->nbaseclasses++; | |
6516 | } | |
6517 | } | |
6518 | ||
98751a41 JK |
6519 | /* Add a typedef defined in the scope of the FIP's class. */ |
6520 | ||
6521 | static void | |
6522 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
6523 | struct dwarf2_cu *cu) | |
6e70227d | 6524 | { |
98751a41 | 6525 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
6526 | struct typedef_field_list *new_field; |
6527 | struct attribute *attr; | |
6528 | struct typedef_field *fp; | |
6529 | char *fieldname = ""; | |
6530 | ||
6531 | /* Allocate a new field list entry and link it in. */ | |
6532 | new_field = xzalloc (sizeof (*new_field)); | |
6533 | make_cleanup (xfree, new_field); | |
6534 | ||
6535 | gdb_assert (die->tag == DW_TAG_typedef); | |
6536 | ||
6537 | fp = &new_field->field; | |
6538 | ||
6539 | /* Get name of field. */ | |
6540 | fp->name = dwarf2_name (die, cu); | |
6541 | if (fp->name == NULL) | |
6542 | return; | |
6543 | ||
6544 | fp->type = read_type_die (die, cu); | |
6545 | ||
6546 | new_field->next = fip->typedef_field_list; | |
6547 | fip->typedef_field_list = new_field; | |
6548 | fip->typedef_field_list_count++; | |
6549 | } | |
6550 | ||
c906108c SS |
6551 | /* Create the vector of fields, and attach it to the type. */ |
6552 | ||
6553 | static void | |
fba45db2 | 6554 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 6555 | struct dwarf2_cu *cu) |
c906108c SS |
6556 | { |
6557 | int nfields = fip->nfields; | |
6558 | ||
6559 | /* Record the field count, allocate space for the array of fields, | |
6560 | and create blank accessibility bitfields if necessary. */ | |
6561 | TYPE_NFIELDS (type) = nfields; | |
6562 | TYPE_FIELDS (type) = (struct field *) | |
6563 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
6564 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
6565 | ||
b4ba55a1 | 6566 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
6567 | { |
6568 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
6569 | ||
6570 | TYPE_FIELD_PRIVATE_BITS (type) = | |
6571 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6572 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
6573 | ||
6574 | TYPE_FIELD_PROTECTED_BITS (type) = | |
6575 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6576 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
6577 | ||
774b6a14 TT |
6578 | TYPE_FIELD_IGNORE_BITS (type) = |
6579 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6580 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
6581 | } |
6582 | ||
6583 | /* If the type has baseclasses, allocate and clear a bit vector for | |
6584 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 6585 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
6586 | { |
6587 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 6588 | unsigned char *pointer; |
c906108c SS |
6589 | |
6590 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
6591 | pointer = TYPE_ALLOC (type, num_bytes); |
6592 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
6593 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
6594 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
6595 | } | |
6596 | ||
3e43a32a MS |
6597 | /* Copy the saved-up fields into the field vector. Start from the head of |
6598 | the list, adding to the tail of the field array, so that they end up in | |
6599 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
6600 | while (nfields-- > 0) |
6601 | { | |
7d0ccb61 DJ |
6602 | struct nextfield *fieldp; |
6603 | ||
6604 | if (fip->fields) | |
6605 | { | |
6606 | fieldp = fip->fields; | |
6607 | fip->fields = fieldp->next; | |
6608 | } | |
6609 | else | |
6610 | { | |
6611 | fieldp = fip->baseclasses; | |
6612 | fip->baseclasses = fieldp->next; | |
6613 | } | |
6614 | ||
6615 | TYPE_FIELD (type, nfields) = fieldp->field; | |
6616 | switch (fieldp->accessibility) | |
c906108c | 6617 | { |
c5aa993b | 6618 | case DW_ACCESS_private: |
b4ba55a1 JB |
6619 | if (cu->language != language_ada) |
6620 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 6621 | break; |
c906108c | 6622 | |
c5aa993b | 6623 | case DW_ACCESS_protected: |
b4ba55a1 JB |
6624 | if (cu->language != language_ada) |
6625 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 6626 | break; |
c906108c | 6627 | |
c5aa993b JM |
6628 | case DW_ACCESS_public: |
6629 | break; | |
c906108c | 6630 | |
c5aa993b JM |
6631 | default: |
6632 | /* Unknown accessibility. Complain and treat it as public. */ | |
6633 | { | |
e2e0b3e5 | 6634 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 6635 | fieldp->accessibility); |
c5aa993b JM |
6636 | } |
6637 | break; | |
c906108c SS |
6638 | } |
6639 | if (nfields < fip->nbaseclasses) | |
6640 | { | |
7d0ccb61 | 6641 | switch (fieldp->virtuality) |
c906108c | 6642 | { |
c5aa993b JM |
6643 | case DW_VIRTUALITY_virtual: |
6644 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 6645 | if (cu->language == language_ada) |
a73c6dcd | 6646 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
6647 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
6648 | break; | |
c906108c SS |
6649 | } |
6650 | } | |
c906108c SS |
6651 | } |
6652 | } | |
6653 | ||
c906108c SS |
6654 | /* Add a member function to the proper fieldlist. */ |
6655 | ||
6656 | static void | |
107d2387 | 6657 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 6658 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 6659 | { |
e7c27a73 | 6660 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6661 | struct attribute *attr; |
6662 | struct fnfieldlist *flp; | |
6663 | int i; | |
6664 | struct fn_field *fnp; | |
6665 | char *fieldname; | |
c906108c | 6666 | struct nextfnfield *new_fnfield; |
f792889a | 6667 | struct type *this_type; |
60d5a603 | 6668 | enum dwarf_access_attribute accessibility; |
c906108c | 6669 | |
b4ba55a1 | 6670 | if (cu->language == language_ada) |
a73c6dcd | 6671 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 6672 | |
2df3850c | 6673 | /* Get name of member function. */ |
39cbfefa DJ |
6674 | fieldname = dwarf2_name (die, cu); |
6675 | if (fieldname == NULL) | |
2df3850c | 6676 | return; |
c906108c | 6677 | |
c906108c SS |
6678 | /* Look up member function name in fieldlist. */ |
6679 | for (i = 0; i < fip->nfnfields; i++) | |
6680 | { | |
27bfe10e | 6681 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
6682 | break; |
6683 | } | |
6684 | ||
6685 | /* Create new list element if necessary. */ | |
6686 | if (i < fip->nfnfields) | |
6687 | flp = &fip->fnfieldlists[i]; | |
6688 | else | |
6689 | { | |
6690 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
6691 | { | |
6692 | fip->fnfieldlists = (struct fnfieldlist *) | |
6693 | xrealloc (fip->fnfieldlists, | |
6694 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 6695 | * sizeof (struct fnfieldlist)); |
c906108c | 6696 | if (fip->nfnfields == 0) |
c13c43fd | 6697 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
6698 | } |
6699 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
6700 | flp->name = fieldname; | |
6701 | flp->length = 0; | |
6702 | flp->head = NULL; | |
3da10d80 | 6703 | i = fip->nfnfields++; |
c906108c SS |
6704 | } |
6705 | ||
6706 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 6707 | entry. */ |
c906108c | 6708 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 6709 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
6710 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
6711 | new_fnfield->next = flp->head; | |
6712 | flp->head = new_fnfield; | |
6713 | flp->length++; | |
6714 | ||
6715 | /* Fill in the member function field info. */ | |
6716 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
6717 | |
6718 | /* Delay processing of the physname until later. */ | |
6719 | if (cu->language == language_cplus || cu->language == language_java) | |
6720 | { | |
6721 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
6722 | die, cu); | |
6723 | } | |
6724 | else | |
6725 | { | |
6726 | char *physname = (char *) dwarf2_physname (fieldname, die, cu); | |
6727 | fnp->physname = physname ? physname : ""; | |
6728 | } | |
6729 | ||
c906108c | 6730 | fnp->type = alloc_type (objfile); |
f792889a DJ |
6731 | this_type = read_type_die (die, cu); |
6732 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 6733 | { |
f792889a | 6734 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 6735 | |
f792889a | 6736 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
6737 | of the method itself (TYPE_CODE_METHOD). */ |
6738 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
6739 | TYPE_TARGET_TYPE (this_type), |
6740 | TYPE_FIELDS (this_type), | |
6741 | TYPE_NFIELDS (this_type), | |
6742 | TYPE_VARARGS (this_type)); | |
c906108c SS |
6743 | |
6744 | /* Handle static member functions. | |
c5aa993b | 6745 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
6746 | member functions. G++ helps GDB by marking the first |
6747 | parameter for non-static member functions (which is the this | |
6748 | pointer) as artificial. We obtain this information from | |
6749 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 6750 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
6751 | fnp->voffset = VOFFSET_STATIC; |
6752 | } | |
6753 | else | |
e2e0b3e5 | 6754 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 6755 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
6756 | |
6757 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 6758 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 6759 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 6760 | |
3e43a32a MS |
6761 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
6762 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
6763 | |
6764 | /* Get accessibility. */ | |
e142c38c | 6765 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 6766 | if (attr) |
60d5a603 JK |
6767 | accessibility = DW_UNSND (attr); |
6768 | else | |
6769 | accessibility = dwarf2_default_access_attribute (die, cu); | |
6770 | switch (accessibility) | |
c906108c | 6771 | { |
60d5a603 JK |
6772 | case DW_ACCESS_private: |
6773 | fnp->is_private = 1; | |
6774 | break; | |
6775 | case DW_ACCESS_protected: | |
6776 | fnp->is_protected = 1; | |
6777 | break; | |
c906108c SS |
6778 | } |
6779 | ||
b02dede2 | 6780 | /* Check for artificial methods. */ |
e142c38c | 6781 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
6782 | if (attr && DW_UNSND (attr) != 0) |
6783 | fnp->is_artificial = 1; | |
6784 | ||
0d564a31 | 6785 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
6786 | function. For older versions of GCC, this is an offset in the |
6787 | appropriate virtual table, as specified by DW_AT_containing_type. | |
6788 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
6789 | to the object address. */ |
6790 | ||
e142c38c | 6791 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 6792 | if (attr) |
8e19ed76 | 6793 | { |
aec5aa8b | 6794 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 6795 | { |
aec5aa8b TT |
6796 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
6797 | { | |
6798 | /* Old-style GCC. */ | |
6799 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
6800 | } | |
6801 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
6802 | || (DW_BLOCK (attr)->size > 1 | |
6803 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
6804 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
6805 | { | |
6806 | struct dwarf_block blk; | |
6807 | int offset; | |
6808 | ||
6809 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
6810 | ? 1 : 2); | |
6811 | blk.size = DW_BLOCK (attr)->size - offset; | |
6812 | blk.data = DW_BLOCK (attr)->data + offset; | |
6813 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
6814 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
6815 | dwarf2_complex_location_expr_complaint (); | |
6816 | else | |
6817 | fnp->voffset /= cu->header.addr_size; | |
6818 | fnp->voffset += 2; | |
6819 | } | |
6820 | else | |
6821 | dwarf2_complex_location_expr_complaint (); | |
6822 | ||
6823 | if (!fnp->fcontext) | |
6824 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
6825 | } | |
3690dd37 | 6826 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 6827 | { |
4d3c2250 | 6828 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
6829 | } |
6830 | else | |
6831 | { | |
4d3c2250 KB |
6832 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
6833 | fieldname); | |
8e19ed76 | 6834 | } |
0d564a31 | 6835 | } |
d48cc9dd DJ |
6836 | else |
6837 | { | |
6838 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
6839 | if (attr && DW_UNSND (attr)) | |
6840 | { | |
6841 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
6842 | complaint (&symfile_complaints, | |
3e43a32a MS |
6843 | _("Member function \"%s\" (offset %d) is virtual " |
6844 | "but the vtable offset is not specified"), | |
d48cc9dd | 6845 | fieldname, die->offset); |
9655fd1a | 6846 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
6847 | TYPE_CPLUS_DYNAMIC (type) = 1; |
6848 | } | |
6849 | } | |
c906108c SS |
6850 | } |
6851 | ||
6852 | /* Create the vector of member function fields, and attach it to the type. */ | |
6853 | ||
6854 | static void | |
fba45db2 | 6855 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 6856 | struct dwarf2_cu *cu) |
c906108c SS |
6857 | { |
6858 | struct fnfieldlist *flp; | |
6859 | int total_length = 0; | |
6860 | int i; | |
6861 | ||
b4ba55a1 | 6862 | if (cu->language == language_ada) |
a73c6dcd | 6863 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 6864 | |
c906108c SS |
6865 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
6866 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
6867 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
6868 | ||
6869 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
6870 | { | |
6871 | struct nextfnfield *nfp = flp->head; | |
6872 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
6873 | int k; | |
6874 | ||
6875 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
6876 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
6877 | fn_flp->fn_fields = (struct fn_field *) | |
6878 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
6879 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 6880 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
6881 | |
6882 | total_length += flp->length; | |
6883 | } | |
6884 | ||
6885 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
6886 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
6887 | } | |
6888 | ||
1168df01 JB |
6889 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
6890 | language, zero otherwise. */ | |
6891 | static int | |
6892 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
6893 | { | |
6894 | static const char vptr[] = "_vptr"; | |
987504bb | 6895 | static const char vtable[] = "vtable"; |
1168df01 | 6896 | |
987504bb JJ |
6897 | /* Look for the C++ and Java forms of the vtable. */ |
6898 | if ((cu->language == language_java | |
6899 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
6900 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
6901 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
6902 | return 1; |
6903 | ||
6904 | return 0; | |
6905 | } | |
6906 | ||
c0dd20ea | 6907 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
6908 | functions, with the ABI-specified layout. If TYPE describes |
6909 | such a structure, smash it into a member function type. | |
61049d3b DJ |
6910 | |
6911 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
6912 | This is GCC PR debug/28767. */ | |
c0dd20ea | 6913 | |
0b92b5bb TT |
6914 | static void |
6915 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 6916 | { |
0b92b5bb | 6917 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
6918 | |
6919 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
6920 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
6921 | return; | |
c0dd20ea DJ |
6922 | |
6923 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
6924 | if (TYPE_FIELD_NAME (type, 0) == NULL |
6925 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
6926 | || TYPE_FIELD_NAME (type, 1) == NULL | |
6927 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
6928 | return; | |
c0dd20ea DJ |
6929 | |
6930 | /* Find the type of the method. */ | |
0b92b5bb | 6931 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
6932 | if (pfn_type == NULL |
6933 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
6934 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 6935 | return; |
c0dd20ea DJ |
6936 | |
6937 | /* Look for the "this" argument. */ | |
6938 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
6939 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 6940 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 6941 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 6942 | return; |
c0dd20ea DJ |
6943 | |
6944 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
6945 | new_type = alloc_type (objfile); |
6946 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
6947 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
6948 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 6949 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 6950 | } |
1168df01 | 6951 | |
c906108c | 6952 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
6953 | (definition) to create a type for the structure or union. Fill in |
6954 | the type's name and general properties; the members will not be | |
6955 | processed until process_structure_type. | |
c906108c | 6956 | |
c767944b DJ |
6957 | NOTE: we need to call these functions regardless of whether or not the |
6958 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
6959 | structure or union. This gets the type entered into our set of |
6960 | user defined types. | |
6961 | ||
6962 | However, if the structure is incomplete (an opaque struct/union) | |
6963 | then suppress creating a symbol table entry for it since gdb only | |
6964 | wants to find the one with the complete definition. Note that if | |
6965 | it is complete, we just call new_symbol, which does it's own | |
6966 | checking about whether the struct/union is anonymous or not (and | |
6967 | suppresses creating a symbol table entry itself). */ | |
6968 | ||
f792889a | 6969 | static struct type * |
134d01f1 | 6970 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6971 | { |
e7c27a73 | 6972 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6973 | struct type *type; |
6974 | struct attribute *attr; | |
39cbfefa | 6975 | char *name; |
c906108c | 6976 | |
348e048f DE |
6977 | /* If the definition of this type lives in .debug_types, read that type. |
6978 | Don't follow DW_AT_specification though, that will take us back up | |
6979 | the chain and we want to go down. */ | |
6980 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
6981 | if (attr) | |
6982 | { | |
6983 | struct dwarf2_cu *type_cu = cu; | |
6984 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 6985 | |
348e048f DE |
6986 | /* We could just recurse on read_structure_type, but we need to call |
6987 | get_die_type to ensure only one type for this DIE is created. | |
6988 | This is important, for example, because for c++ classes we need | |
6989 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
6990 | type = read_type_die (type_die, type_cu); | |
9dc481d3 DE |
6991 | |
6992 | /* TYPE_CU may not be the same as CU. | |
6993 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
6994 | return set_die_type (die, type, cu); |
6995 | } | |
6996 | ||
c0dd20ea | 6997 | type = alloc_type (objfile); |
c906108c | 6998 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 6999 | |
39cbfefa DJ |
7000 | name = dwarf2_name (die, cu); |
7001 | if (name != NULL) | |
c906108c | 7002 | { |
987504bb JJ |
7003 | if (cu->language == language_cplus |
7004 | || cu->language == language_java) | |
63d06c5c | 7005 | { |
3da10d80 KS |
7006 | char *full_name = (char *) dwarf2_full_name (name, die, cu); |
7007 | ||
7008 | /* dwarf2_full_name might have already finished building the DIE's | |
7009 | type. If so, there is no need to continue. */ | |
7010 | if (get_die_type (die, cu) != NULL) | |
7011 | return get_die_type (die, cu); | |
7012 | ||
7013 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
7014 | if (die->tag == DW_TAG_structure_type |
7015 | || die->tag == DW_TAG_class_type) | |
7016 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
7017 | } |
7018 | else | |
7019 | { | |
d8151005 DJ |
7020 | /* The name is already allocated along with this objfile, so |
7021 | we don't need to duplicate it for the type. */ | |
94af9270 KS |
7022 | TYPE_TAG_NAME (type) = (char *) name; |
7023 | if (die->tag == DW_TAG_class_type) | |
7024 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 7025 | } |
c906108c SS |
7026 | } |
7027 | ||
7028 | if (die->tag == DW_TAG_structure_type) | |
7029 | { | |
7030 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
7031 | } | |
7032 | else if (die->tag == DW_TAG_union_type) | |
7033 | { | |
7034 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
7035 | } | |
7036 | else | |
7037 | { | |
c906108c SS |
7038 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
7039 | } | |
7040 | ||
0cc2414c TT |
7041 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
7042 | TYPE_DECLARED_CLASS (type) = 1; | |
7043 | ||
e142c38c | 7044 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7045 | if (attr) |
7046 | { | |
7047 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7048 | } | |
7049 | else | |
7050 | { | |
7051 | TYPE_LENGTH (type) = 0; | |
7052 | } | |
7053 | ||
876cecd0 | 7054 | TYPE_STUB_SUPPORTED (type) = 1; |
dc718098 | 7055 | if (die_is_declaration (die, cu)) |
876cecd0 | 7056 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
7057 | else if (attr == NULL && die->child == NULL |
7058 | && producer_is_realview (cu->producer)) | |
7059 | /* RealView does not output the required DW_AT_declaration | |
7060 | on incomplete types. */ | |
7061 | TYPE_STUB (type) = 1; | |
dc718098 | 7062 | |
c906108c SS |
7063 | /* We need to add the type field to the die immediately so we don't |
7064 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 7065 | type within the structure itself. */ |
1c379e20 | 7066 | set_die_type (die, type, cu); |
c906108c | 7067 | |
7e314c57 JK |
7068 | /* set_die_type should be already done. */ |
7069 | set_descriptive_type (type, die, cu); | |
7070 | ||
c767944b DJ |
7071 | return type; |
7072 | } | |
7073 | ||
7074 | /* Finish creating a structure or union type, including filling in | |
7075 | its members and creating a symbol for it. */ | |
7076 | ||
7077 | static void | |
7078 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
7079 | { | |
7080 | struct objfile *objfile = cu->objfile; | |
7081 | struct die_info *child_die = die->child; | |
7082 | struct type *type; | |
7083 | ||
7084 | type = get_die_type (die, cu); | |
7085 | if (type == NULL) | |
7086 | type = read_structure_type (die, cu); | |
7087 | ||
e142c38c | 7088 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
7089 | { |
7090 | struct field_info fi; | |
7091 | struct die_info *child_die; | |
34eaf542 | 7092 | VEC (symbolp) *template_args = NULL; |
c767944b | 7093 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
7094 | |
7095 | memset (&fi, 0, sizeof (struct field_info)); | |
7096 | ||
639d11d3 | 7097 | child_die = die->child; |
c906108c SS |
7098 | |
7099 | while (child_die && child_die->tag) | |
7100 | { | |
a9a9bd0f DC |
7101 | if (child_die->tag == DW_TAG_member |
7102 | || child_die->tag == DW_TAG_variable) | |
c906108c | 7103 | { |
a9a9bd0f DC |
7104 | /* NOTE: carlton/2002-11-05: A C++ static data member |
7105 | should be a DW_TAG_member that is a declaration, but | |
7106 | all versions of G++ as of this writing (so through at | |
7107 | least 3.2.1) incorrectly generate DW_TAG_variable | |
7108 | tags for them instead. */ | |
e7c27a73 | 7109 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 7110 | } |
8713b1b1 | 7111 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 7112 | { |
0963b4bd | 7113 | /* C++ member function. */ |
e7c27a73 | 7114 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
7115 | } |
7116 | else if (child_die->tag == DW_TAG_inheritance) | |
7117 | { | |
7118 | /* C++ base class field. */ | |
e7c27a73 | 7119 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 7120 | } |
98751a41 JK |
7121 | else if (child_die->tag == DW_TAG_typedef) |
7122 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
7123 | else if (child_die->tag == DW_TAG_template_type_param |
7124 | || child_die->tag == DW_TAG_template_value_param) | |
7125 | { | |
7126 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
7127 | ||
f1078f66 DJ |
7128 | if (arg != NULL) |
7129 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
7130 | } |
7131 | ||
c906108c SS |
7132 | child_die = sibling_die (child_die); |
7133 | } | |
7134 | ||
34eaf542 TT |
7135 | /* Attach template arguments to type. */ |
7136 | if (! VEC_empty (symbolp, template_args)) | |
7137 | { | |
7138 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
7139 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
7140 | = VEC_length (symbolp, template_args); | |
7141 | TYPE_TEMPLATE_ARGUMENTS (type) | |
7142 | = obstack_alloc (&objfile->objfile_obstack, | |
7143 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
7144 | * sizeof (struct symbol *))); | |
7145 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
7146 | VEC_address (symbolp, template_args), | |
7147 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
7148 | * sizeof (struct symbol *))); | |
7149 | VEC_free (symbolp, template_args); | |
7150 | } | |
7151 | ||
c906108c SS |
7152 | /* Attach fields and member functions to the type. */ |
7153 | if (fi.nfields) | |
e7c27a73 | 7154 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
7155 | if (fi.nfnfields) |
7156 | { | |
e7c27a73 | 7157 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 7158 | |
c5aa993b | 7159 | /* Get the type which refers to the base class (possibly this |
c906108c | 7160 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
7161 | class from the DW_AT_containing_type attribute. This use of |
7162 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 7163 | |
e142c38c | 7164 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 7165 | { |
e7c27a73 | 7166 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
7167 | |
7168 | TYPE_VPTR_BASETYPE (type) = t; | |
7169 | if (type == t) | |
7170 | { | |
c906108c SS |
7171 | int i; |
7172 | ||
7173 | /* Our own class provides vtbl ptr. */ | |
7174 | for (i = TYPE_NFIELDS (t) - 1; | |
7175 | i >= TYPE_N_BASECLASSES (t); | |
7176 | --i) | |
7177 | { | |
7178 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
7179 | ||
1168df01 | 7180 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
7181 | { |
7182 | TYPE_VPTR_FIELDNO (type) = i; | |
7183 | break; | |
7184 | } | |
7185 | } | |
7186 | ||
7187 | /* Complain if virtual function table field not found. */ | |
7188 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 7189 | complaint (&symfile_complaints, |
3e43a32a MS |
7190 | _("virtual function table pointer " |
7191 | "not found when defining class '%s'"), | |
4d3c2250 KB |
7192 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
7193 | ""); | |
c906108c SS |
7194 | } |
7195 | else | |
7196 | { | |
7197 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
7198 | } | |
7199 | } | |
f6235d4c EZ |
7200 | else if (cu->producer |
7201 | && strncmp (cu->producer, | |
7202 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
7203 | { | |
7204 | /* The IBM XLC compiler does not provide direct indication | |
7205 | of the containing type, but the vtable pointer is | |
7206 | always named __vfp. */ | |
7207 | ||
7208 | int i; | |
7209 | ||
7210 | for (i = TYPE_NFIELDS (type) - 1; | |
7211 | i >= TYPE_N_BASECLASSES (type); | |
7212 | --i) | |
7213 | { | |
7214 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
7215 | { | |
7216 | TYPE_VPTR_FIELDNO (type) = i; | |
7217 | TYPE_VPTR_BASETYPE (type) = type; | |
7218 | break; | |
7219 | } | |
7220 | } | |
7221 | } | |
c906108c | 7222 | } |
98751a41 JK |
7223 | |
7224 | /* Copy fi.typedef_field_list linked list elements content into the | |
7225 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
7226 | if (fi.typedef_field_list) | |
7227 | { | |
7228 | int i = fi.typedef_field_list_count; | |
7229 | ||
a0d7a4ff | 7230 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
7231 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
7232 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
7233 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
7234 | ||
7235 | /* Reverse the list order to keep the debug info elements order. */ | |
7236 | while (--i >= 0) | |
7237 | { | |
7238 | struct typedef_field *dest, *src; | |
6e70227d | 7239 | |
98751a41 JK |
7240 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
7241 | src = &fi.typedef_field_list->field; | |
7242 | fi.typedef_field_list = fi.typedef_field_list->next; | |
7243 | *dest = *src; | |
7244 | } | |
7245 | } | |
c767944b DJ |
7246 | |
7247 | do_cleanups (back_to); | |
c906108c | 7248 | } |
63d06c5c | 7249 | |
0b92b5bb TT |
7250 | quirk_gcc_member_function_pointer (type, cu->objfile); |
7251 | ||
90aeadfc DC |
7252 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
7253 | snapshots) has been known to create a die giving a declaration | |
7254 | for a class that has, as a child, a die giving a definition for a | |
7255 | nested class. So we have to process our children even if the | |
7256 | current die is a declaration. Normally, of course, a declaration | |
7257 | won't have any children at all. */ | |
134d01f1 | 7258 | |
90aeadfc DC |
7259 | while (child_die != NULL && child_die->tag) |
7260 | { | |
7261 | if (child_die->tag == DW_TAG_member | |
7262 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
7263 | || child_die->tag == DW_TAG_inheritance |
7264 | || child_die->tag == DW_TAG_template_value_param | |
7265 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 7266 | { |
90aeadfc | 7267 | /* Do nothing. */ |
134d01f1 | 7268 | } |
90aeadfc DC |
7269 | else |
7270 | process_die (child_die, cu); | |
134d01f1 | 7271 | |
90aeadfc | 7272 | child_die = sibling_die (child_die); |
134d01f1 DJ |
7273 | } |
7274 | ||
fa4028e9 JB |
7275 | /* Do not consider external references. According to the DWARF standard, |
7276 | these DIEs are identified by the fact that they have no byte_size | |
7277 | attribute, and a declaration attribute. */ | |
7278 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
7279 | || !die_is_declaration (die, cu)) | |
c767944b | 7280 | new_symbol (die, type, cu); |
134d01f1 DJ |
7281 | } |
7282 | ||
7283 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
7284 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 7285 | |
f792889a | 7286 | static struct type * |
134d01f1 | 7287 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7288 | { |
e7c27a73 | 7289 | struct objfile *objfile = cu->objfile; |
c906108c | 7290 | struct type *type; |
c906108c | 7291 | struct attribute *attr; |
0114d602 | 7292 | const char *name; |
134d01f1 | 7293 | |
348e048f DE |
7294 | /* If the definition of this type lives in .debug_types, read that type. |
7295 | Don't follow DW_AT_specification though, that will take us back up | |
7296 | the chain and we want to go down. */ | |
7297 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
7298 | if (attr) | |
7299 | { | |
7300 | struct dwarf2_cu *type_cu = cu; | |
7301 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 7302 | |
348e048f | 7303 | type = read_type_die (type_die, type_cu); |
9dc481d3 DE |
7304 | |
7305 | /* TYPE_CU may not be the same as CU. | |
7306 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
7307 | return set_die_type (die, type, cu); |
7308 | } | |
7309 | ||
c906108c SS |
7310 | type = alloc_type (objfile); |
7311 | ||
7312 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 7313 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 7314 | if (name != NULL) |
0114d602 | 7315 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 7316 | |
e142c38c | 7317 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7318 | if (attr) |
7319 | { | |
7320 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7321 | } | |
7322 | else | |
7323 | { | |
7324 | TYPE_LENGTH (type) = 0; | |
7325 | } | |
7326 | ||
137033e9 JB |
7327 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
7328 | declared as private in the package spec, and then defined only | |
7329 | inside the package body. Such types are known as Taft Amendment | |
7330 | Types. When another package uses such a type, an incomplete DIE | |
7331 | may be generated by the compiler. */ | |
02eb380e | 7332 | if (die_is_declaration (die, cu)) |
876cecd0 | 7333 | TYPE_STUB (type) = 1; |
02eb380e | 7334 | |
f792889a | 7335 | return set_die_type (die, type, cu); |
134d01f1 DJ |
7336 | } |
7337 | ||
7338 | /* Given a pointer to a die which begins an enumeration, process all | |
7339 | the dies that define the members of the enumeration, and create the | |
7340 | symbol for the enumeration type. | |
7341 | ||
7342 | NOTE: We reverse the order of the element list. */ | |
7343 | ||
7344 | static void | |
7345 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
7346 | { | |
f792889a | 7347 | struct type *this_type; |
134d01f1 | 7348 | |
f792889a DJ |
7349 | this_type = get_die_type (die, cu); |
7350 | if (this_type == NULL) | |
7351 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 7352 | |
639d11d3 | 7353 | if (die->child != NULL) |
c906108c | 7354 | { |
9dc481d3 DE |
7355 | struct die_info *child_die; |
7356 | struct symbol *sym; | |
7357 | struct field *fields = NULL; | |
7358 | int num_fields = 0; | |
7359 | int unsigned_enum = 1; | |
7360 | char *name; | |
7361 | ||
639d11d3 | 7362 | child_die = die->child; |
c906108c SS |
7363 | while (child_die && child_die->tag) |
7364 | { | |
7365 | if (child_die->tag != DW_TAG_enumerator) | |
7366 | { | |
e7c27a73 | 7367 | process_die (child_die, cu); |
c906108c SS |
7368 | } |
7369 | else | |
7370 | { | |
39cbfefa DJ |
7371 | name = dwarf2_name (child_die, cu); |
7372 | if (name) | |
c906108c | 7373 | { |
f792889a | 7374 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
7375 | if (SYMBOL_VALUE (sym) < 0) |
7376 | unsigned_enum = 0; | |
7377 | ||
7378 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
7379 | { | |
7380 | fields = (struct field *) | |
7381 | xrealloc (fields, | |
7382 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 7383 | * sizeof (struct field)); |
c906108c SS |
7384 | } |
7385 | ||
3567439c | 7386 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 7387 | FIELD_TYPE (fields[num_fields]) = NULL; |
d6a843b5 | 7388 | SET_FIELD_BITPOS (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
7389 | FIELD_BITSIZE (fields[num_fields]) = 0; |
7390 | ||
7391 | num_fields++; | |
7392 | } | |
7393 | } | |
7394 | ||
7395 | child_die = sibling_die (child_die); | |
7396 | } | |
7397 | ||
7398 | if (num_fields) | |
7399 | { | |
f792889a DJ |
7400 | TYPE_NFIELDS (this_type) = num_fields; |
7401 | TYPE_FIELDS (this_type) = (struct field *) | |
7402 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
7403 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 7404 | sizeof (struct field) * num_fields); |
b8c9b27d | 7405 | xfree (fields); |
c906108c SS |
7406 | } |
7407 | if (unsigned_enum) | |
876cecd0 | 7408 | TYPE_UNSIGNED (this_type) = 1; |
c906108c | 7409 | } |
134d01f1 | 7410 | |
f792889a | 7411 | new_symbol (die, this_type, cu); |
c906108c SS |
7412 | } |
7413 | ||
7414 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
7415 | the DIE's type field. For now, this only handles one dimensional | |
7416 | arrays. */ | |
7417 | ||
f792889a | 7418 | static struct type * |
e7c27a73 | 7419 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7420 | { |
e7c27a73 | 7421 | struct objfile *objfile = cu->objfile; |
c906108c | 7422 | struct die_info *child_die; |
7e314c57 | 7423 | struct type *type; |
c906108c SS |
7424 | struct type *element_type, *range_type, *index_type; |
7425 | struct type **range_types = NULL; | |
7426 | struct attribute *attr; | |
7427 | int ndim = 0; | |
7428 | struct cleanup *back_to; | |
39cbfefa | 7429 | char *name; |
c906108c | 7430 | |
e7c27a73 | 7431 | element_type = die_type (die, cu); |
c906108c | 7432 | |
7e314c57 JK |
7433 | /* The die_type call above may have already set the type for this DIE. */ |
7434 | type = get_die_type (die, cu); | |
7435 | if (type) | |
7436 | return type; | |
7437 | ||
c906108c SS |
7438 | /* Irix 6.2 native cc creates array types without children for |
7439 | arrays with unspecified length. */ | |
639d11d3 | 7440 | if (die->child == NULL) |
c906108c | 7441 | { |
46bf5051 | 7442 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 7443 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
7444 | type = create_array_type (NULL, element_type, range_type); |
7445 | return set_die_type (die, type, cu); | |
c906108c SS |
7446 | } |
7447 | ||
7448 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 7449 | child_die = die->child; |
c906108c SS |
7450 | while (child_die && child_die->tag) |
7451 | { | |
7452 | if (child_die->tag == DW_TAG_subrange_type) | |
7453 | { | |
f792889a | 7454 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 7455 | |
f792889a | 7456 | if (child_type != NULL) |
a02abb62 | 7457 | { |
0963b4bd MS |
7458 | /* The range type was succesfully read. Save it for the |
7459 | array type creation. */ | |
a02abb62 JB |
7460 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
7461 | { | |
7462 | range_types = (struct type **) | |
7463 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
7464 | * sizeof (struct type *)); | |
7465 | if (ndim == 0) | |
7466 | make_cleanup (free_current_contents, &range_types); | |
7467 | } | |
f792889a | 7468 | range_types[ndim++] = child_type; |
a02abb62 | 7469 | } |
c906108c SS |
7470 | } |
7471 | child_die = sibling_die (child_die); | |
7472 | } | |
7473 | ||
7474 | /* Dwarf2 dimensions are output from left to right, create the | |
7475 | necessary array types in backwards order. */ | |
7ca2d3a3 | 7476 | |
c906108c | 7477 | type = element_type; |
7ca2d3a3 DL |
7478 | |
7479 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
7480 | { | |
7481 | int i = 0; | |
9a619af0 | 7482 | |
7ca2d3a3 DL |
7483 | while (i < ndim) |
7484 | type = create_array_type (NULL, type, range_types[i++]); | |
7485 | } | |
7486 | else | |
7487 | { | |
7488 | while (ndim-- > 0) | |
7489 | type = create_array_type (NULL, type, range_types[ndim]); | |
7490 | } | |
c906108c | 7491 | |
f5f8a009 EZ |
7492 | /* Understand Dwarf2 support for vector types (like they occur on |
7493 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
7494 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
7495 | custom vendor extension. The main difference between a regular | |
7496 | array and the vector variant is that vectors are passed by value | |
7497 | to functions. */ | |
e142c38c | 7498 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 7499 | if (attr) |
ea37ba09 | 7500 | make_vector_type (type); |
f5f8a009 | 7501 | |
dbc98a8b KW |
7502 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
7503 | implementation may choose to implement triple vectors using this | |
7504 | attribute. */ | |
7505 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
7506 | if (attr) | |
7507 | { | |
7508 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
7509 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7510 | else | |
3e43a32a MS |
7511 | complaint (&symfile_complaints, |
7512 | _("DW_AT_byte_size for array type smaller " | |
7513 | "than the total size of elements")); | |
dbc98a8b KW |
7514 | } |
7515 | ||
39cbfefa DJ |
7516 | name = dwarf2_name (die, cu); |
7517 | if (name) | |
7518 | TYPE_NAME (type) = name; | |
6e70227d | 7519 | |
0963b4bd | 7520 | /* Install the type in the die. */ |
7e314c57 JK |
7521 | set_die_type (die, type, cu); |
7522 | ||
7523 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
7524 | set_descriptive_type (type, die, cu); |
7525 | ||
c906108c SS |
7526 | do_cleanups (back_to); |
7527 | ||
7e314c57 | 7528 | return type; |
c906108c SS |
7529 | } |
7530 | ||
7ca2d3a3 | 7531 | static enum dwarf_array_dim_ordering |
6e70227d | 7532 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
7533 | { |
7534 | struct attribute *attr; | |
7535 | ||
7536 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
7537 | ||
7538 | if (attr) return DW_SND (attr); | |
7539 | ||
0963b4bd MS |
7540 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
7541 | opposite order to the dwarf2 specification, but data is still | |
7542 | laid out as per normal fortran. | |
7ca2d3a3 | 7543 | |
0963b4bd MS |
7544 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
7545 | version checking. */ | |
7ca2d3a3 | 7546 | |
905e0470 PM |
7547 | if (cu->language == language_fortran |
7548 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
7549 | { |
7550 | return DW_ORD_row_major; | |
7551 | } | |
7552 | ||
6e70227d | 7553 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
7554 | { |
7555 | case array_column_major: | |
7556 | return DW_ORD_col_major; | |
7557 | case array_row_major: | |
7558 | default: | |
7559 | return DW_ORD_row_major; | |
7560 | }; | |
7561 | } | |
7562 | ||
72019c9c | 7563 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 7564 | the DIE's type field. */ |
72019c9c | 7565 | |
f792889a | 7566 | static struct type * |
72019c9c GM |
7567 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
7568 | { | |
7e314c57 JK |
7569 | struct type *domain_type, *set_type; |
7570 | struct attribute *attr; | |
f792889a | 7571 | |
7e314c57 JK |
7572 | domain_type = die_type (die, cu); |
7573 | ||
7574 | /* The die_type call above may have already set the type for this DIE. */ | |
7575 | set_type = get_die_type (die, cu); | |
7576 | if (set_type) | |
7577 | return set_type; | |
7578 | ||
7579 | set_type = create_set_type (NULL, domain_type); | |
7580 | ||
7581 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
7582 | if (attr) |
7583 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 7584 | |
f792889a | 7585 | return set_die_type (die, set_type, cu); |
72019c9c | 7586 | } |
7ca2d3a3 | 7587 | |
c906108c SS |
7588 | /* First cut: install each common block member as a global variable. */ |
7589 | ||
7590 | static void | |
e7c27a73 | 7591 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7592 | { |
7593 | struct die_info *child_die; | |
7594 | struct attribute *attr; | |
7595 | struct symbol *sym; | |
7596 | CORE_ADDR base = (CORE_ADDR) 0; | |
7597 | ||
e142c38c | 7598 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7599 | if (attr) |
7600 | { | |
0963b4bd | 7601 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
7602 | if (attr_form_is_block (attr)) |
7603 | { | |
e7c27a73 | 7604 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 7605 | } |
3690dd37 | 7606 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 7607 | { |
4d3c2250 | 7608 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
7609 | } |
7610 | else | |
7611 | { | |
4d3c2250 KB |
7612 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
7613 | "common block member"); | |
8e19ed76 | 7614 | } |
c906108c | 7615 | } |
639d11d3 | 7616 | if (die->child != NULL) |
c906108c | 7617 | { |
639d11d3 | 7618 | child_die = die->child; |
c906108c SS |
7619 | while (child_die && child_die->tag) |
7620 | { | |
e7c27a73 | 7621 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 7622 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
f1078f66 | 7623 | if (sym != NULL && attr != NULL) |
c906108c | 7624 | { |
d4b96c9a JK |
7625 | CORE_ADDR byte_offset = 0; |
7626 | ||
7627 | if (attr_form_is_section_offset (attr)) | |
7628 | dwarf2_complex_location_expr_complaint (); | |
7629 | else if (attr_form_is_constant (attr)) | |
7630 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); | |
7631 | else if (attr_form_is_block (attr)) | |
7632 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); | |
7633 | else | |
7634 | dwarf2_complex_location_expr_complaint (); | |
7635 | ||
7636 | SYMBOL_VALUE_ADDRESS (sym) = base + byte_offset; | |
c906108c SS |
7637 | add_symbol_to_list (sym, &global_symbols); |
7638 | } | |
7639 | child_die = sibling_die (child_die); | |
7640 | } | |
7641 | } | |
7642 | } | |
7643 | ||
0114d602 | 7644 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 7645 | |
0114d602 DJ |
7646 | static struct type * |
7647 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 7648 | { |
e7c27a73 | 7649 | struct objfile *objfile = cu->objfile; |
0114d602 | 7650 | const char *previous_prefix, *name; |
9219021c | 7651 | int is_anonymous; |
0114d602 DJ |
7652 | struct type *type; |
7653 | ||
7654 | /* For extensions, reuse the type of the original namespace. */ | |
7655 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
7656 | { | |
7657 | struct die_info *ext_die; | |
7658 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 7659 | |
0114d602 DJ |
7660 | ext_die = dwarf2_extension (die, &ext_cu); |
7661 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
7662 | |
7663 | /* EXT_CU may not be the same as CU. | |
7664 | Ensure TYPE is recorded in CU's type_hash table. */ | |
0114d602 DJ |
7665 | return set_die_type (die, type, cu); |
7666 | } | |
9219021c | 7667 | |
e142c38c | 7668 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
7669 | |
7670 | /* Now build the name of the current namespace. */ | |
7671 | ||
0114d602 DJ |
7672 | previous_prefix = determine_prefix (die, cu); |
7673 | if (previous_prefix[0] != '\0') | |
7674 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 7675 | previous_prefix, name, 0, cu); |
0114d602 DJ |
7676 | |
7677 | /* Create the type. */ | |
7678 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
7679 | objfile); | |
7680 | TYPE_NAME (type) = (char *) name; | |
7681 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7682 | ||
60531b24 | 7683 | return set_die_type (die, type, cu); |
0114d602 DJ |
7684 | } |
7685 | ||
7686 | /* Read a C++ namespace. */ | |
7687 | ||
7688 | static void | |
7689 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
7690 | { | |
7691 | struct objfile *objfile = cu->objfile; | |
0114d602 | 7692 | int is_anonymous; |
9219021c | 7693 | |
5c4e30ca DC |
7694 | /* Add a symbol associated to this if we haven't seen the namespace |
7695 | before. Also, add a using directive if it's an anonymous | |
7696 | namespace. */ | |
9219021c | 7697 | |
f2f0e013 | 7698 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
7699 | { |
7700 | struct type *type; | |
7701 | ||
0114d602 | 7702 | type = read_type_die (die, cu); |
e7c27a73 | 7703 | new_symbol (die, type, cu); |
5c4e30ca | 7704 | |
e8e80198 | 7705 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 7706 | if (is_anonymous) |
0114d602 DJ |
7707 | { |
7708 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 7709 | |
c0cc3a76 | 7710 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
13387711 | 7711 | NULL, &objfile->objfile_obstack); |
0114d602 | 7712 | } |
5c4e30ca | 7713 | } |
9219021c | 7714 | |
639d11d3 | 7715 | if (die->child != NULL) |
d9fa45fe | 7716 | { |
639d11d3 | 7717 | struct die_info *child_die = die->child; |
6e70227d | 7718 | |
d9fa45fe DC |
7719 | while (child_die && child_die->tag) |
7720 | { | |
e7c27a73 | 7721 | process_die (child_die, cu); |
d9fa45fe DC |
7722 | child_die = sibling_die (child_die); |
7723 | } | |
7724 | } | |
38d518c9 EZ |
7725 | } |
7726 | ||
f55ee35c JK |
7727 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
7728 | imported module. Still we need that type as local Fortran "use ... only" | |
7729 | declaration imports depend on the created type in determine_prefix. */ | |
7730 | ||
7731 | static struct type * | |
7732 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
7733 | { | |
7734 | struct objfile *objfile = cu->objfile; | |
7735 | char *module_name; | |
7736 | struct type *type; | |
7737 | ||
7738 | module_name = dwarf2_name (die, cu); | |
7739 | if (!module_name) | |
3e43a32a MS |
7740 | complaint (&symfile_complaints, |
7741 | _("DW_TAG_module has no name, offset 0x%x"), | |
f55ee35c JK |
7742 | die->offset); |
7743 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); | |
7744 | ||
7745 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
7746 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7747 | ||
7748 | return set_die_type (die, type, cu); | |
7749 | } | |
7750 | ||
5d7cb8df JK |
7751 | /* Read a Fortran module. */ |
7752 | ||
7753 | static void | |
7754 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
7755 | { | |
7756 | struct die_info *child_die = die->child; | |
7757 | ||
5d7cb8df JK |
7758 | while (child_die && child_die->tag) |
7759 | { | |
7760 | process_die (child_die, cu); | |
7761 | child_die = sibling_die (child_die); | |
7762 | } | |
7763 | } | |
7764 | ||
38d518c9 EZ |
7765 | /* Return the name of the namespace represented by DIE. Set |
7766 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
7767 | namespace. */ | |
7768 | ||
7769 | static const char * | |
e142c38c | 7770 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
7771 | { |
7772 | struct die_info *current_die; | |
7773 | const char *name = NULL; | |
7774 | ||
7775 | /* Loop through the extensions until we find a name. */ | |
7776 | ||
7777 | for (current_die = die; | |
7778 | current_die != NULL; | |
f2f0e013 | 7779 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 7780 | { |
e142c38c | 7781 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
7782 | if (name != NULL) |
7783 | break; | |
7784 | } | |
7785 | ||
7786 | /* Is it an anonymous namespace? */ | |
7787 | ||
7788 | *is_anonymous = (name == NULL); | |
7789 | if (*is_anonymous) | |
7790 | name = "(anonymous namespace)"; | |
7791 | ||
7792 | return name; | |
d9fa45fe DC |
7793 | } |
7794 | ||
c906108c SS |
7795 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
7796 | the user defined type vector. */ | |
7797 | ||
f792889a | 7798 | static struct type * |
e7c27a73 | 7799 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7800 | { |
5e2b427d | 7801 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 7802 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 7803 | struct type *type; |
8b2dbe47 KB |
7804 | struct attribute *attr_byte_size; |
7805 | struct attribute *attr_address_class; | |
7806 | int byte_size, addr_class; | |
7e314c57 JK |
7807 | struct type *target_type; |
7808 | ||
7809 | target_type = die_type (die, cu); | |
c906108c | 7810 | |
7e314c57 JK |
7811 | /* The die_type call above may have already set the type for this DIE. */ |
7812 | type = get_die_type (die, cu); | |
7813 | if (type) | |
7814 | return type; | |
7815 | ||
7816 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 7817 | |
e142c38c | 7818 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
7819 | if (attr_byte_size) |
7820 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 7821 | else |
8b2dbe47 KB |
7822 | byte_size = cu_header->addr_size; |
7823 | ||
e142c38c | 7824 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
7825 | if (attr_address_class) |
7826 | addr_class = DW_UNSND (attr_address_class); | |
7827 | else | |
7828 | addr_class = DW_ADDR_none; | |
7829 | ||
7830 | /* If the pointer size or address class is different than the | |
7831 | default, create a type variant marked as such and set the | |
7832 | length accordingly. */ | |
7833 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 7834 | { |
5e2b427d | 7835 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
7836 | { |
7837 | int type_flags; | |
7838 | ||
849957d9 | 7839 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 7840 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
7841 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
7842 | == 0); | |
8b2dbe47 KB |
7843 | type = make_type_with_address_space (type, type_flags); |
7844 | } | |
7845 | else if (TYPE_LENGTH (type) != byte_size) | |
7846 | { | |
3e43a32a MS |
7847 | complaint (&symfile_complaints, |
7848 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 7849 | } |
6e70227d | 7850 | else |
9a619af0 MS |
7851 | { |
7852 | /* Should we also complain about unhandled address classes? */ | |
7853 | } | |
c906108c | 7854 | } |
8b2dbe47 KB |
7855 | |
7856 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 7857 | return set_die_type (die, type, cu); |
c906108c SS |
7858 | } |
7859 | ||
7860 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
7861 | the user defined type vector. */ | |
7862 | ||
f792889a | 7863 | static struct type * |
e7c27a73 | 7864 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7865 | { |
7866 | struct type *type; | |
7867 | struct type *to_type; | |
7868 | struct type *domain; | |
7869 | ||
e7c27a73 DJ |
7870 | to_type = die_type (die, cu); |
7871 | domain = die_containing_type (die, cu); | |
0d5de010 | 7872 | |
7e314c57 JK |
7873 | /* The calls above may have already set the type for this DIE. */ |
7874 | type = get_die_type (die, cu); | |
7875 | if (type) | |
7876 | return type; | |
7877 | ||
0d5de010 DJ |
7878 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
7879 | type = lookup_methodptr_type (to_type); | |
7880 | else | |
7881 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 7882 | |
f792889a | 7883 | return set_die_type (die, type, cu); |
c906108c SS |
7884 | } |
7885 | ||
7886 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
7887 | the user defined type vector. */ | |
7888 | ||
f792889a | 7889 | static struct type * |
e7c27a73 | 7890 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7891 | { |
e7c27a73 | 7892 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 7893 | struct type *type, *target_type; |
c906108c SS |
7894 | struct attribute *attr; |
7895 | ||
7e314c57 JK |
7896 | target_type = die_type (die, cu); |
7897 | ||
7898 | /* The die_type call above may have already set the type for this DIE. */ | |
7899 | type = get_die_type (die, cu); | |
7900 | if (type) | |
7901 | return type; | |
7902 | ||
7903 | type = lookup_reference_type (target_type); | |
e142c38c | 7904 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7905 | if (attr) |
7906 | { | |
7907 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7908 | } | |
7909 | else | |
7910 | { | |
107d2387 | 7911 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 7912 | } |
f792889a | 7913 | return set_die_type (die, type, cu); |
c906108c SS |
7914 | } |
7915 | ||
f792889a | 7916 | static struct type * |
e7c27a73 | 7917 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7918 | { |
f792889a | 7919 | struct type *base_type, *cv_type; |
c906108c | 7920 | |
e7c27a73 | 7921 | base_type = die_type (die, cu); |
7e314c57 JK |
7922 | |
7923 | /* The die_type call above may have already set the type for this DIE. */ | |
7924 | cv_type = get_die_type (die, cu); | |
7925 | if (cv_type) | |
7926 | return cv_type; | |
7927 | ||
2f608a3a KW |
7928 | /* In case the const qualifier is applied to an array type, the element type |
7929 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
7930 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
7931 | { | |
7932 | struct type *el_type, *inner_array; | |
7933 | ||
7934 | base_type = copy_type (base_type); | |
7935 | inner_array = base_type; | |
7936 | ||
7937 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
7938 | { | |
7939 | TYPE_TARGET_TYPE (inner_array) = | |
7940 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
7941 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
7942 | } | |
7943 | ||
7944 | el_type = TYPE_TARGET_TYPE (inner_array); | |
7945 | TYPE_TARGET_TYPE (inner_array) = | |
7946 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
7947 | ||
7948 | return set_die_type (die, base_type, cu); | |
7949 | } | |
7950 | ||
f792889a DJ |
7951 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
7952 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
7953 | } |
7954 | ||
f792889a | 7955 | static struct type * |
e7c27a73 | 7956 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7957 | { |
f792889a | 7958 | struct type *base_type, *cv_type; |
c906108c | 7959 | |
e7c27a73 | 7960 | base_type = die_type (die, cu); |
7e314c57 JK |
7961 | |
7962 | /* The die_type call above may have already set the type for this DIE. */ | |
7963 | cv_type = get_die_type (die, cu); | |
7964 | if (cv_type) | |
7965 | return cv_type; | |
7966 | ||
f792889a DJ |
7967 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
7968 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
7969 | } |
7970 | ||
7971 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
7972 | the user defined type vector. It isn't really a user defined type, | |
7973 | but it behaves like one, with other DIE's using an AT_user_def_type | |
7974 | attribute to reference it. */ | |
7975 | ||
f792889a | 7976 | static struct type * |
e7c27a73 | 7977 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7978 | { |
e7c27a73 | 7979 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 7980 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
7981 | struct type *type, *range_type, *index_type, *char_type; |
7982 | struct attribute *attr; | |
7983 | unsigned int length; | |
7984 | ||
e142c38c | 7985 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
7986 | if (attr) |
7987 | { | |
7988 | length = DW_UNSND (attr); | |
7989 | } | |
7990 | else | |
7991 | { | |
0963b4bd | 7992 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 7993 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
7994 | if (attr) |
7995 | { | |
7996 | length = DW_UNSND (attr); | |
7997 | } | |
7998 | else | |
7999 | { | |
8000 | length = 1; | |
8001 | } | |
c906108c | 8002 | } |
6ccb9162 | 8003 | |
46bf5051 | 8004 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 8005 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
8006 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
8007 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 8008 | |
f792889a | 8009 | return set_die_type (die, type, cu); |
c906108c SS |
8010 | } |
8011 | ||
8012 | /* Handle DIES due to C code like: | |
8013 | ||
8014 | struct foo | |
c5aa993b JM |
8015 | { |
8016 | int (*funcp)(int a, long l); | |
8017 | int b; | |
8018 | }; | |
c906108c | 8019 | |
0963b4bd | 8020 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 8021 | |
f792889a | 8022 | static struct type * |
e7c27a73 | 8023 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8024 | { |
0963b4bd MS |
8025 | struct type *type; /* Type that this function returns. */ |
8026 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
8027 | struct attribute *attr; |
8028 | ||
e7c27a73 | 8029 | type = die_type (die, cu); |
7e314c57 JK |
8030 | |
8031 | /* The die_type call above may have already set the type for this DIE. */ | |
8032 | ftype = get_die_type (die, cu); | |
8033 | if (ftype) | |
8034 | return ftype; | |
8035 | ||
0c8b41f1 | 8036 | ftype = lookup_function_type (type); |
c906108c | 8037 | |
5b8101ae | 8038 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 8039 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 8040 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 8041 | || cu->language == language_cplus |
5b8101ae PM |
8042 | || cu->language == language_java |
8043 | || cu->language == language_pascal) | |
876cecd0 | 8044 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
8045 | else if (producer_is_realview (cu->producer)) |
8046 | /* RealView does not emit DW_AT_prototyped. We can not | |
8047 | distinguish prototyped and unprototyped functions; default to | |
8048 | prototyped, since that is more common in modern code (and | |
8049 | RealView warns about unprototyped functions). */ | |
8050 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 8051 | |
c055b101 CV |
8052 | /* Store the calling convention in the type if it's available in |
8053 | the subroutine die. Otherwise set the calling convention to | |
8054 | the default value DW_CC_normal. */ | |
8055 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
8056 | if (attr) |
8057 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
8058 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
8059 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
8060 | else | |
8061 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
8062 | |
8063 | /* We need to add the subroutine type to the die immediately so | |
8064 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 8065 | declared as the same subroutine type. */ |
76c10ea2 | 8066 | set_die_type (die, ftype, cu); |
6e70227d | 8067 | |
639d11d3 | 8068 | if (die->child != NULL) |
c906108c | 8069 | { |
8072405b | 8070 | struct type *void_type = objfile_type (cu->objfile)->builtin_void; |
c906108c | 8071 | struct die_info *child_die; |
8072405b | 8072 | int nparams, iparams; |
c906108c SS |
8073 | |
8074 | /* Count the number of parameters. | |
8075 | FIXME: GDB currently ignores vararg functions, but knows about | |
8076 | vararg member functions. */ | |
8072405b | 8077 | nparams = 0; |
639d11d3 | 8078 | child_die = die->child; |
c906108c SS |
8079 | while (child_die && child_die->tag) |
8080 | { | |
8081 | if (child_die->tag == DW_TAG_formal_parameter) | |
8082 | nparams++; | |
8083 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 8084 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
8085 | child_die = sibling_die (child_die); |
8086 | } | |
8087 | ||
8088 | /* Allocate storage for parameters and fill them in. */ | |
8089 | TYPE_NFIELDS (ftype) = nparams; | |
8090 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 8091 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 8092 | |
8072405b JK |
8093 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
8094 | even if we error out during the parameters reading below. */ | |
8095 | for (iparams = 0; iparams < nparams; iparams++) | |
8096 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
8097 | ||
8098 | iparams = 0; | |
639d11d3 | 8099 | child_die = die->child; |
c906108c SS |
8100 | while (child_die && child_die->tag) |
8101 | { | |
8102 | if (child_die->tag == DW_TAG_formal_parameter) | |
8103 | { | |
3ce3b1ba PA |
8104 | struct type *arg_type; |
8105 | ||
8106 | /* DWARF version 2 has no clean way to discern C++ | |
8107 | static and non-static member functions. G++ helps | |
8108 | GDB by marking the first parameter for non-static | |
8109 | member functions (which is the this pointer) as | |
8110 | artificial. We pass this information to | |
8111 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
8112 | ||
8113 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
8114 | 4.5 does not yet generate. */ | |
e142c38c | 8115 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
8116 | if (attr) |
8117 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
8118 | else | |
418835cc KS |
8119 | { |
8120 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
8121 | ||
8122 | /* GCC/43521: In java, the formal parameter | |
8123 | "this" is sometimes not marked with DW_AT_artificial. */ | |
8124 | if (cu->language == language_java) | |
8125 | { | |
8126 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 8127 | |
418835cc KS |
8128 | if (name && !strcmp (name, "this")) |
8129 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
8130 | } | |
8131 | } | |
3ce3b1ba PA |
8132 | arg_type = die_type (child_die, cu); |
8133 | ||
8134 | /* RealView does not mark THIS as const, which the testsuite | |
8135 | expects. GCC marks THIS as const in method definitions, | |
8136 | but not in the class specifications (GCC PR 43053). */ | |
8137 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
8138 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
8139 | { | |
8140 | int is_this = 0; | |
8141 | struct dwarf2_cu *arg_cu = cu; | |
8142 | const char *name = dwarf2_name (child_die, cu); | |
8143 | ||
8144 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
8145 | if (attr) | |
8146 | { | |
8147 | /* If the compiler emits this, use it. */ | |
8148 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
8149 | is_this = 1; | |
8150 | } | |
8151 | else if (name && strcmp (name, "this") == 0) | |
8152 | /* Function definitions will have the argument names. */ | |
8153 | is_this = 1; | |
8154 | else if (name == NULL && iparams == 0) | |
8155 | /* Declarations may not have the names, so like | |
8156 | elsewhere in GDB, assume an artificial first | |
8157 | argument is "this". */ | |
8158 | is_this = 1; | |
8159 | ||
8160 | if (is_this) | |
8161 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
8162 | arg_type, 0); | |
8163 | } | |
8164 | ||
8165 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
8166 | iparams++; |
8167 | } | |
8168 | child_die = sibling_die (child_die); | |
8169 | } | |
8170 | } | |
8171 | ||
76c10ea2 | 8172 | return ftype; |
c906108c SS |
8173 | } |
8174 | ||
f792889a | 8175 | static struct type * |
e7c27a73 | 8176 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8177 | { |
e7c27a73 | 8178 | struct objfile *objfile = cu->objfile; |
0114d602 | 8179 | const char *name = NULL; |
f792889a | 8180 | struct type *this_type; |
c906108c | 8181 | |
94af9270 | 8182 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 8183 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
8184 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
8185 | TYPE_NAME (this_type) = (char *) name; | |
f792889a DJ |
8186 | set_die_type (die, this_type, cu); |
8187 | TYPE_TARGET_TYPE (this_type) = die_type (die, cu); | |
8188 | return this_type; | |
c906108c SS |
8189 | } |
8190 | ||
8191 | /* Find a representation of a given base type and install | |
8192 | it in the TYPE field of the die. */ | |
8193 | ||
f792889a | 8194 | static struct type * |
e7c27a73 | 8195 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8196 | { |
e7c27a73 | 8197 | struct objfile *objfile = cu->objfile; |
c906108c SS |
8198 | struct type *type; |
8199 | struct attribute *attr; | |
8200 | int encoding = 0, size = 0; | |
39cbfefa | 8201 | char *name; |
6ccb9162 UW |
8202 | enum type_code code = TYPE_CODE_INT; |
8203 | int type_flags = 0; | |
8204 | struct type *target_type = NULL; | |
c906108c | 8205 | |
e142c38c | 8206 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
8207 | if (attr) |
8208 | { | |
8209 | encoding = DW_UNSND (attr); | |
8210 | } | |
e142c38c | 8211 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
8212 | if (attr) |
8213 | { | |
8214 | size = DW_UNSND (attr); | |
8215 | } | |
39cbfefa | 8216 | name = dwarf2_name (die, cu); |
6ccb9162 | 8217 | if (!name) |
c906108c | 8218 | { |
6ccb9162 UW |
8219 | complaint (&symfile_complaints, |
8220 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 8221 | } |
6ccb9162 UW |
8222 | |
8223 | switch (encoding) | |
c906108c | 8224 | { |
6ccb9162 UW |
8225 | case DW_ATE_address: |
8226 | /* Turn DW_ATE_address into a void * pointer. */ | |
8227 | code = TYPE_CODE_PTR; | |
8228 | type_flags |= TYPE_FLAG_UNSIGNED; | |
8229 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
8230 | break; | |
8231 | case DW_ATE_boolean: | |
8232 | code = TYPE_CODE_BOOL; | |
8233 | type_flags |= TYPE_FLAG_UNSIGNED; | |
8234 | break; | |
8235 | case DW_ATE_complex_float: | |
8236 | code = TYPE_CODE_COMPLEX; | |
8237 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
8238 | break; | |
8239 | case DW_ATE_decimal_float: | |
8240 | code = TYPE_CODE_DECFLOAT; | |
8241 | break; | |
8242 | case DW_ATE_float: | |
8243 | code = TYPE_CODE_FLT; | |
8244 | break; | |
8245 | case DW_ATE_signed: | |
8246 | break; | |
8247 | case DW_ATE_unsigned: | |
8248 | type_flags |= TYPE_FLAG_UNSIGNED; | |
8249 | break; | |
8250 | case DW_ATE_signed_char: | |
6e70227d | 8251 | if (cu->language == language_ada || cu->language == language_m2 |
868a0084 | 8252 | || cu->language == language_pascal) |
6ccb9162 UW |
8253 | code = TYPE_CODE_CHAR; |
8254 | break; | |
8255 | case DW_ATE_unsigned_char: | |
868a0084 PM |
8256 | if (cu->language == language_ada || cu->language == language_m2 |
8257 | || cu->language == language_pascal) | |
6ccb9162 UW |
8258 | code = TYPE_CODE_CHAR; |
8259 | type_flags |= TYPE_FLAG_UNSIGNED; | |
8260 | break; | |
75079b2b TT |
8261 | case DW_ATE_UTF: |
8262 | /* We just treat this as an integer and then recognize the | |
8263 | type by name elsewhere. */ | |
8264 | break; | |
8265 | ||
6ccb9162 UW |
8266 | default: |
8267 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
8268 | dwarf_type_encoding_name (encoding)); | |
8269 | break; | |
c906108c | 8270 | } |
6ccb9162 | 8271 | |
0114d602 DJ |
8272 | type = init_type (code, size, type_flags, NULL, objfile); |
8273 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
8274 | TYPE_TARGET_TYPE (type) = target_type; |
8275 | ||
0114d602 | 8276 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 8277 | TYPE_NOSIGN (type) = 1; |
0114d602 | 8278 | |
f792889a | 8279 | return set_die_type (die, type, cu); |
c906108c SS |
8280 | } |
8281 | ||
a02abb62 JB |
8282 | /* Read the given DW_AT_subrange DIE. */ |
8283 | ||
f792889a | 8284 | static struct type * |
a02abb62 JB |
8285 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
8286 | { | |
8287 | struct type *base_type; | |
8288 | struct type *range_type; | |
8289 | struct attribute *attr; | |
43bbcdc2 PH |
8290 | LONGEST low = 0; |
8291 | LONGEST high = -1; | |
39cbfefa | 8292 | char *name; |
43bbcdc2 | 8293 | LONGEST negative_mask; |
e77813c8 | 8294 | |
a02abb62 | 8295 | base_type = die_type (die, cu); |
953ac07e JK |
8296 | /* Preserve BASE_TYPE's original type, just set its LENGTH. */ |
8297 | check_typedef (base_type); | |
a02abb62 | 8298 | |
7e314c57 JK |
8299 | /* The die_type call above may have already set the type for this DIE. */ |
8300 | range_type = get_die_type (die, cu); | |
8301 | if (range_type) | |
8302 | return range_type; | |
8303 | ||
e142c38c | 8304 | if (cu->language == language_fortran) |
6e70227d | 8305 | { |
a02abb62 JB |
8306 | /* FORTRAN implies a lower bound of 1, if not given. */ |
8307 | low = 1; | |
8308 | } | |
8309 | ||
dd5e6932 DJ |
8310 | /* FIXME: For variable sized arrays either of these could be |
8311 | a variable rather than a constant value. We'll allow it, | |
8312 | but we don't know how to handle it. */ | |
e142c38c | 8313 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
8314 | if (attr) |
8315 | low = dwarf2_get_attr_constant_value (attr, 0); | |
8316 | ||
e142c38c | 8317 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 8318 | if (attr) |
6e70227d | 8319 | { |
e77813c8 | 8320 | if (attr->form == DW_FORM_block1 || is_ref_attr (attr)) |
a02abb62 JB |
8321 | { |
8322 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 8323 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
8324 | FIXME: GDB does not yet know how to handle dynamic |
8325 | arrays properly, treat them as arrays with unspecified | |
8326 | length for now. | |
8327 | ||
8328 | FIXME: jimb/2003-09-22: GDB does not really know | |
8329 | how to handle arrays of unspecified length | |
8330 | either; we just represent them as zero-length | |
8331 | arrays. Choose an appropriate upper bound given | |
8332 | the lower bound we've computed above. */ | |
8333 | high = low - 1; | |
8334 | } | |
8335 | else | |
8336 | high = dwarf2_get_attr_constant_value (attr, 1); | |
8337 | } | |
e77813c8 PM |
8338 | else |
8339 | { | |
8340 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
8341 | if (attr) | |
8342 | { | |
8343 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
8344 | high = low + count - 1; | |
8345 | } | |
c2ff108b JK |
8346 | else |
8347 | { | |
8348 | /* Unspecified array length. */ | |
8349 | high = low - 1; | |
8350 | } | |
e77813c8 PM |
8351 | } |
8352 | ||
8353 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
8354 | without specifying a base type. | |
8355 | In that case, the base type must be set to the type of | |
8356 | the lower bound, upper bound or count, in that order, if any of these | |
8357 | three attributes references an object that has a type. | |
8358 | If no base type is found, the Dwarf-2 specifications say that | |
8359 | a signed integer type of size equal to the size of an address should | |
8360 | be used. | |
8361 | For the following C code: `extern char gdb_int [];' | |
8362 | GCC produces an empty range DIE. | |
8363 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 8364 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
8365 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
8366 | { | |
8367 | struct objfile *objfile = cu->objfile; | |
8368 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8369 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
8370 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
8371 | ||
8372 | /* Test "int", "long int", and "long long int" objfile types, | |
8373 | and select the first one having a size above or equal to the | |
8374 | architecture address size. */ | |
8375 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
8376 | base_type = int_type; | |
8377 | else | |
8378 | { | |
8379 | int_type = objfile_type (objfile)->builtin_long; | |
8380 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
8381 | base_type = int_type; | |
8382 | else | |
8383 | { | |
8384 | int_type = objfile_type (objfile)->builtin_long_long; | |
8385 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
8386 | base_type = int_type; | |
8387 | } | |
8388 | } | |
8389 | } | |
a02abb62 | 8390 | |
6e70227d | 8391 | negative_mask = |
43bbcdc2 PH |
8392 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
8393 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
8394 | low |= negative_mask; | |
8395 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
8396 | high |= negative_mask; | |
8397 | ||
a02abb62 JB |
8398 | range_type = create_range_type (NULL, base_type, low, high); |
8399 | ||
bbb0eef6 JK |
8400 | /* Mark arrays with dynamic length at least as an array of unspecified |
8401 | length. GDB could check the boundary but before it gets implemented at | |
8402 | least allow accessing the array elements. */ | |
8403 | if (attr && attr->form == DW_FORM_block1) | |
8404 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
8405 | ||
c2ff108b JK |
8406 | /* Ada expects an empty array on no boundary attributes. */ |
8407 | if (attr == NULL && cu->language != language_ada) | |
8408 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
8409 | ||
39cbfefa DJ |
8410 | name = dwarf2_name (die, cu); |
8411 | if (name) | |
8412 | TYPE_NAME (range_type) = name; | |
6e70227d | 8413 | |
e142c38c | 8414 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
8415 | if (attr) |
8416 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
8417 | ||
7e314c57 JK |
8418 | set_die_type (die, range_type, cu); |
8419 | ||
8420 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
8421 | set_descriptive_type (range_type, die, cu); |
8422 | ||
7e314c57 | 8423 | return range_type; |
a02abb62 | 8424 | } |
6e70227d | 8425 | |
f792889a | 8426 | static struct type * |
81a17f79 JB |
8427 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
8428 | { | |
8429 | struct type *type; | |
81a17f79 | 8430 | |
81a17f79 JB |
8431 | /* For now, we only support the C meaning of an unspecified type: void. */ |
8432 | ||
0114d602 DJ |
8433 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
8434 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 8435 | |
f792889a | 8436 | return set_die_type (die, type, cu); |
81a17f79 | 8437 | } |
a02abb62 | 8438 | |
51545339 DJ |
8439 | /* Trivial hash function for die_info: the hash value of a DIE |
8440 | is its offset in .debug_info for this objfile. */ | |
8441 | ||
8442 | static hashval_t | |
8443 | die_hash (const void *item) | |
8444 | { | |
8445 | const struct die_info *die = item; | |
9a619af0 | 8446 | |
51545339 DJ |
8447 | return die->offset; |
8448 | } | |
8449 | ||
8450 | /* Trivial comparison function for die_info structures: two DIEs | |
8451 | are equal if they have the same offset. */ | |
8452 | ||
8453 | static int | |
8454 | die_eq (const void *item_lhs, const void *item_rhs) | |
8455 | { | |
8456 | const struct die_info *die_lhs = item_lhs; | |
8457 | const struct die_info *die_rhs = item_rhs; | |
9a619af0 | 8458 | |
51545339 DJ |
8459 | return die_lhs->offset == die_rhs->offset; |
8460 | } | |
8461 | ||
c906108c SS |
8462 | /* Read a whole compilation unit into a linked list of dies. */ |
8463 | ||
f9aca02d | 8464 | static struct die_info * |
93311388 | 8465 | read_comp_unit (gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 8466 | { |
93311388 | 8467 | struct die_reader_specs reader_specs; |
98bfdba5 | 8468 | int read_abbrevs = 0; |
1d9ec526 | 8469 | struct cleanup *back_to = NULL; |
98bfdba5 PA |
8470 | struct die_info *die; |
8471 | ||
8472 | if (cu->dwarf2_abbrevs == NULL) | |
8473 | { | |
8474 | dwarf2_read_abbrevs (cu->objfile->obfd, cu); | |
8475 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
8476 | read_abbrevs = 1; | |
8477 | } | |
93311388 | 8478 | |
348e048f | 8479 | gdb_assert (cu->die_hash == NULL); |
51545339 DJ |
8480 | cu->die_hash |
8481 | = htab_create_alloc_ex (cu->header.length / 12, | |
8482 | die_hash, | |
8483 | die_eq, | |
8484 | NULL, | |
8485 | &cu->comp_unit_obstack, | |
8486 | hashtab_obstack_allocate, | |
8487 | dummy_obstack_deallocate); | |
8488 | ||
93311388 DE |
8489 | init_cu_die_reader (&reader_specs, cu); |
8490 | ||
98bfdba5 PA |
8491 | die = read_die_and_children (&reader_specs, info_ptr, &info_ptr, NULL); |
8492 | ||
8493 | if (read_abbrevs) | |
8494 | do_cleanups (back_to); | |
8495 | ||
8496 | return die; | |
639d11d3 DC |
8497 | } |
8498 | ||
d97bc12b DE |
8499 | /* Main entry point for reading a DIE and all children. |
8500 | Read the DIE and dump it if requested. */ | |
8501 | ||
8502 | static struct die_info * | |
93311388 DE |
8503 | read_die_and_children (const struct die_reader_specs *reader, |
8504 | gdb_byte *info_ptr, | |
d97bc12b DE |
8505 | gdb_byte **new_info_ptr, |
8506 | struct die_info *parent) | |
8507 | { | |
93311388 | 8508 | struct die_info *result = read_die_and_children_1 (reader, info_ptr, |
d97bc12b DE |
8509 | new_info_ptr, parent); |
8510 | ||
8511 | if (dwarf2_die_debug) | |
8512 | { | |
348e048f DE |
8513 | fprintf_unfiltered (gdb_stdlog, |
8514 | "\nRead die from %s of %s:\n", | |
8515 | reader->buffer == dwarf2_per_objfile->info.buffer | |
8516 | ? ".debug_info" | |
8517 | : reader->buffer == dwarf2_per_objfile->types.buffer | |
8518 | ? ".debug_types" | |
8519 | : "unknown section", | |
8520 | reader->abfd->filename); | |
d97bc12b DE |
8521 | dump_die (result, dwarf2_die_debug); |
8522 | } | |
8523 | ||
8524 | return result; | |
8525 | } | |
8526 | ||
639d11d3 DC |
8527 | /* Read a single die and all its descendents. Set the die's sibling |
8528 | field to NULL; set other fields in the die correctly, and set all | |
8529 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
8530 | location of the info_ptr after reading all of those dies. PARENT | |
8531 | is the parent of the die in question. */ | |
8532 | ||
8533 | static struct die_info * | |
93311388 DE |
8534 | read_die_and_children_1 (const struct die_reader_specs *reader, |
8535 | gdb_byte *info_ptr, | |
d97bc12b DE |
8536 | gdb_byte **new_info_ptr, |
8537 | struct die_info *parent) | |
639d11d3 DC |
8538 | { |
8539 | struct die_info *die; | |
fe1b8b76 | 8540 | gdb_byte *cur_ptr; |
639d11d3 DC |
8541 | int has_children; |
8542 | ||
93311388 | 8543 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
8544 | if (die == NULL) |
8545 | { | |
8546 | *new_info_ptr = cur_ptr; | |
8547 | return NULL; | |
8548 | } | |
93311388 | 8549 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
8550 | |
8551 | if (has_children) | |
348e048f | 8552 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
8553 | else |
8554 | { | |
8555 | die->child = NULL; | |
8556 | *new_info_ptr = cur_ptr; | |
8557 | } | |
8558 | ||
8559 | die->sibling = NULL; | |
8560 | die->parent = parent; | |
8561 | return die; | |
8562 | } | |
8563 | ||
8564 | /* Read a die, all of its descendents, and all of its siblings; set | |
8565 | all of the fields of all of the dies correctly. Arguments are as | |
8566 | in read_die_and_children. */ | |
8567 | ||
8568 | static struct die_info * | |
93311388 DE |
8569 | read_die_and_siblings (const struct die_reader_specs *reader, |
8570 | gdb_byte *info_ptr, | |
fe1b8b76 | 8571 | gdb_byte **new_info_ptr, |
639d11d3 DC |
8572 | struct die_info *parent) |
8573 | { | |
8574 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 8575 | gdb_byte *cur_ptr; |
639d11d3 | 8576 | |
c906108c | 8577 | cur_ptr = info_ptr; |
639d11d3 DC |
8578 | first_die = last_sibling = NULL; |
8579 | ||
8580 | while (1) | |
c906108c | 8581 | { |
639d11d3 | 8582 | struct die_info *die |
93311388 | 8583 | = read_die_and_children_1 (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 8584 | |
1d325ec1 | 8585 | if (die == NULL) |
c906108c | 8586 | { |
639d11d3 DC |
8587 | *new_info_ptr = cur_ptr; |
8588 | return first_die; | |
c906108c | 8589 | } |
1d325ec1 DJ |
8590 | |
8591 | if (!first_die) | |
8592 | first_die = die; | |
c906108c | 8593 | else |
1d325ec1 DJ |
8594 | last_sibling->sibling = die; |
8595 | ||
8596 | last_sibling = die; | |
c906108c | 8597 | } |
c906108c SS |
8598 | } |
8599 | ||
93311388 DE |
8600 | /* Read the die from the .debug_info section buffer. Set DIEP to |
8601 | point to a newly allocated die with its information, except for its | |
8602 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
8603 | whether the die has children or not. */ | |
8604 | ||
8605 | static gdb_byte * | |
8606 | read_full_die (const struct die_reader_specs *reader, | |
8607 | struct die_info **diep, gdb_byte *info_ptr, | |
8608 | int *has_children) | |
8609 | { | |
8610 | unsigned int abbrev_number, bytes_read, i, offset; | |
8611 | struct abbrev_info *abbrev; | |
8612 | struct die_info *die; | |
8613 | struct dwarf2_cu *cu = reader->cu; | |
8614 | bfd *abfd = reader->abfd; | |
8615 | ||
8616 | offset = info_ptr - reader->buffer; | |
8617 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8618 | info_ptr += bytes_read; | |
8619 | if (!abbrev_number) | |
8620 | { | |
8621 | *diep = NULL; | |
8622 | *has_children = 0; | |
8623 | return info_ptr; | |
8624 | } | |
8625 | ||
8626 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
8627 | if (!abbrev) | |
348e048f DE |
8628 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
8629 | abbrev_number, | |
8630 | bfd_get_filename (abfd)); | |
8631 | ||
93311388 DE |
8632 | die = dwarf_alloc_die (cu, abbrev->num_attrs); |
8633 | die->offset = offset; | |
8634 | die->tag = abbrev->tag; | |
8635 | die->abbrev = abbrev_number; | |
8636 | ||
8637 | die->num_attrs = abbrev->num_attrs; | |
8638 | ||
8639 | for (i = 0; i < abbrev->num_attrs; ++i) | |
8640 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
8641 | abfd, info_ptr, cu); | |
8642 | ||
8643 | *diep = die; | |
8644 | *has_children = abbrev->has_children; | |
8645 | return info_ptr; | |
8646 | } | |
8647 | ||
c906108c SS |
8648 | /* In DWARF version 2, the description of the debugging information is |
8649 | stored in a separate .debug_abbrev section. Before we read any | |
8650 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
8651 | in a hash table. This function also sets flags in CU describing |
8652 | the data found in the abbrev table. */ | |
c906108c SS |
8653 | |
8654 | static void | |
e7c27a73 | 8655 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 8656 | { |
e7c27a73 | 8657 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 8658 | gdb_byte *abbrev_ptr; |
c906108c SS |
8659 | struct abbrev_info *cur_abbrev; |
8660 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
8661 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
8662 | struct attr_abbrev *cur_attrs; |
8663 | unsigned int allocated_attrs; | |
c906108c | 8664 | |
0963b4bd | 8665 | /* Initialize dwarf2 abbrevs. */ |
f3dd6933 DJ |
8666 | obstack_init (&cu->abbrev_obstack); |
8667 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
8668 | (ABBREV_HASH_SIZE | |
8669 | * sizeof (struct abbrev_info *))); | |
8670 | memset (cu->dwarf2_abbrevs, 0, | |
8671 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 8672 | |
be391dca TT |
8673 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
8674 | &dwarf2_per_objfile->abbrev); | |
dce234bc | 8675 | abbrev_ptr = dwarf2_per_objfile->abbrev.buffer + cu_header->abbrev_offset; |
c906108c SS |
8676 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
8677 | abbrev_ptr += bytes_read; | |
8678 | ||
f3dd6933 DJ |
8679 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8680 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 8681 | |
0963b4bd | 8682 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
8683 | while (abbrev_number) |
8684 | { | |
f3dd6933 | 8685 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
8686 | |
8687 | /* read in abbrev header */ | |
8688 | cur_abbrev->number = abbrev_number; | |
8689 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8690 | abbrev_ptr += bytes_read; | |
8691 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
8692 | abbrev_ptr += 1; | |
8693 | ||
72bf9492 DJ |
8694 | if (cur_abbrev->tag == DW_TAG_namespace) |
8695 | cu->has_namespace_info = 1; | |
8696 | ||
c906108c SS |
8697 | /* now read in declarations */ |
8698 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8699 | abbrev_ptr += bytes_read; | |
8700 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8701 | abbrev_ptr += bytes_read; | |
8702 | while (abbrev_name) | |
8703 | { | |
f3dd6933 | 8704 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 8705 | { |
f3dd6933 DJ |
8706 | allocated_attrs += ATTR_ALLOC_CHUNK; |
8707 | cur_attrs | |
8708 | = xrealloc (cur_attrs, (allocated_attrs | |
8709 | * sizeof (struct attr_abbrev))); | |
c906108c | 8710 | } |
ae038cb0 DJ |
8711 | |
8712 | /* Record whether this compilation unit might have | |
8713 | inter-compilation-unit references. If we don't know what form | |
8714 | this attribute will have, then it might potentially be a | |
8715 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
8716 | references. */ | |
8717 | ||
8718 | if (abbrev_form == DW_FORM_ref_addr | |
8719 | || abbrev_form == DW_FORM_indirect) | |
8720 | cu->has_form_ref_addr = 1; | |
8721 | ||
f3dd6933 DJ |
8722 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
8723 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
8724 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
8725 | abbrev_ptr += bytes_read; | |
8726 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8727 | abbrev_ptr += bytes_read; | |
8728 | } | |
8729 | ||
f3dd6933 DJ |
8730 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
8731 | (cur_abbrev->num_attrs | |
8732 | * sizeof (struct attr_abbrev))); | |
8733 | memcpy (cur_abbrev->attrs, cur_attrs, | |
8734 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
8735 | ||
c906108c | 8736 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
8737 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
8738 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
8739 | |
8740 | /* Get next abbreviation. | |
8741 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
8742 | always properly terminated with an abbrev number of 0. |
8743 | Exit loop if we encounter an abbreviation which we have | |
8744 | already read (which means we are about to read the abbreviations | |
8745 | for the next compile unit) or if the end of the abbreviation | |
8746 | table is reached. */ | |
dce234bc PP |
8747 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev.buffer) |
8748 | >= dwarf2_per_objfile->abbrev.size) | |
c906108c SS |
8749 | break; |
8750 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8751 | abbrev_ptr += bytes_read; | |
e7c27a73 | 8752 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
8753 | break; |
8754 | } | |
f3dd6933 DJ |
8755 | |
8756 | xfree (cur_attrs); | |
c906108c SS |
8757 | } |
8758 | ||
f3dd6933 | 8759 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 8760 | |
c906108c | 8761 | static void |
f3dd6933 | 8762 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 8763 | { |
f3dd6933 | 8764 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 8765 | |
f3dd6933 DJ |
8766 | obstack_free (&cu->abbrev_obstack, NULL); |
8767 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
8768 | } |
8769 | ||
8770 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
8771 | ||
8772 | static struct abbrev_info * | |
e7c27a73 | 8773 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
8774 | { |
8775 | unsigned int hash_number; | |
8776 | struct abbrev_info *abbrev; | |
8777 | ||
8778 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 8779 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
8780 | |
8781 | while (abbrev) | |
8782 | { | |
8783 | if (abbrev->number == number) | |
8784 | return abbrev; | |
8785 | else | |
8786 | abbrev = abbrev->next; | |
8787 | } | |
8788 | return NULL; | |
8789 | } | |
8790 | ||
72bf9492 DJ |
8791 | /* Returns nonzero if TAG represents a type that we might generate a partial |
8792 | symbol for. */ | |
8793 | ||
8794 | static int | |
8795 | is_type_tag_for_partial (int tag) | |
8796 | { | |
8797 | switch (tag) | |
8798 | { | |
8799 | #if 0 | |
8800 | /* Some types that would be reasonable to generate partial symbols for, | |
8801 | that we don't at present. */ | |
8802 | case DW_TAG_array_type: | |
8803 | case DW_TAG_file_type: | |
8804 | case DW_TAG_ptr_to_member_type: | |
8805 | case DW_TAG_set_type: | |
8806 | case DW_TAG_string_type: | |
8807 | case DW_TAG_subroutine_type: | |
8808 | #endif | |
8809 | case DW_TAG_base_type: | |
8810 | case DW_TAG_class_type: | |
680b30c7 | 8811 | case DW_TAG_interface_type: |
72bf9492 DJ |
8812 | case DW_TAG_enumeration_type: |
8813 | case DW_TAG_structure_type: | |
8814 | case DW_TAG_subrange_type: | |
8815 | case DW_TAG_typedef: | |
8816 | case DW_TAG_union_type: | |
8817 | return 1; | |
8818 | default: | |
8819 | return 0; | |
8820 | } | |
8821 | } | |
8822 | ||
8823 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
8824 | ||
8825 | static struct partial_die_info * | |
93311388 DE |
8826 | load_partial_dies (bfd *abfd, gdb_byte *buffer, gdb_byte *info_ptr, |
8827 | int building_psymtab, struct dwarf2_cu *cu) | |
72bf9492 DJ |
8828 | { |
8829 | struct partial_die_info *part_die; | |
8830 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
8831 | struct abbrev_info *abbrev; | |
8832 | unsigned int bytes_read; | |
5afb4e99 | 8833 | unsigned int load_all = 0; |
72bf9492 DJ |
8834 | |
8835 | int nesting_level = 1; | |
8836 | ||
8837 | parent_die = NULL; | |
8838 | last_die = NULL; | |
8839 | ||
5afb4e99 DJ |
8840 | if (cu->per_cu && cu->per_cu->load_all_dies) |
8841 | load_all = 1; | |
8842 | ||
72bf9492 DJ |
8843 | cu->partial_dies |
8844 | = htab_create_alloc_ex (cu->header.length / 12, | |
8845 | partial_die_hash, | |
8846 | partial_die_eq, | |
8847 | NULL, | |
8848 | &cu->comp_unit_obstack, | |
8849 | hashtab_obstack_allocate, | |
8850 | dummy_obstack_deallocate); | |
8851 | ||
8852 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
8853 | sizeof (struct partial_die_info)); | |
8854 | ||
8855 | while (1) | |
8856 | { | |
8857 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
8858 | ||
8859 | /* A NULL abbrev means the end of a series of children. */ | |
8860 | if (abbrev == NULL) | |
8861 | { | |
8862 | if (--nesting_level == 0) | |
8863 | { | |
8864 | /* PART_DIE was probably the last thing allocated on the | |
8865 | comp_unit_obstack, so we could call obstack_free | |
8866 | here. We don't do that because the waste is small, | |
8867 | and will be cleaned up when we're done with this | |
8868 | compilation unit. This way, we're also more robust | |
8869 | against other users of the comp_unit_obstack. */ | |
8870 | return first_die; | |
8871 | } | |
8872 | info_ptr += bytes_read; | |
8873 | last_die = parent_die; | |
8874 | parent_die = parent_die->die_parent; | |
8875 | continue; | |
8876 | } | |
8877 | ||
98bfdba5 PA |
8878 | /* Check for template arguments. We never save these; if |
8879 | they're seen, we just mark the parent, and go on our way. */ | |
8880 | if (parent_die != NULL | |
8881 | && cu->language == language_cplus | |
8882 | && (abbrev->tag == DW_TAG_template_type_param | |
8883 | || abbrev->tag == DW_TAG_template_value_param)) | |
8884 | { | |
8885 | parent_die->has_template_arguments = 1; | |
8886 | ||
8887 | if (!load_all) | |
8888 | { | |
8889 | /* We don't need a partial DIE for the template argument. */ | |
8890 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, | |
8891 | cu); | |
8892 | continue; | |
8893 | } | |
8894 | } | |
8895 | ||
8896 | /* We only recurse into subprograms looking for template arguments. | |
8897 | Skip their other children. */ | |
8898 | if (!load_all | |
8899 | && cu->language == language_cplus | |
8900 | && parent_die != NULL | |
8901 | && parent_die->tag == DW_TAG_subprogram) | |
8902 | { | |
8903 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); | |
8904 | continue; | |
8905 | } | |
8906 | ||
5afb4e99 DJ |
8907 | /* Check whether this DIE is interesting enough to save. Normally |
8908 | we would not be interested in members here, but there may be | |
8909 | later variables referencing them via DW_AT_specification (for | |
8910 | static members). */ | |
8911 | if (!load_all | |
8912 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 8913 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
8914 | && abbrev->tag != DW_TAG_enumerator |
8915 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 8916 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 8917 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 8918 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 8919 | && abbrev->tag != DW_TAG_module |
5afb4e99 | 8920 | && abbrev->tag != DW_TAG_member) |
72bf9492 DJ |
8921 | { |
8922 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 8923 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
72bf9492 DJ |
8924 | continue; |
8925 | } | |
8926 | ||
93311388 DE |
8927 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, abfd, |
8928 | buffer, info_ptr, cu); | |
72bf9492 DJ |
8929 | |
8930 | /* This two-pass algorithm for processing partial symbols has a | |
8931 | high cost in cache pressure. Thus, handle some simple cases | |
8932 | here which cover the majority of C partial symbols. DIEs | |
8933 | which neither have specification tags in them, nor could have | |
8934 | specification tags elsewhere pointing at them, can simply be | |
8935 | processed and discarded. | |
8936 | ||
8937 | This segment is also optional; scan_partial_symbols and | |
8938 | add_partial_symbol will handle these DIEs if we chain | |
8939 | them in normally. When compilers which do not emit large | |
8940 | quantities of duplicate debug information are more common, | |
8941 | this code can probably be removed. */ | |
8942 | ||
8943 | /* Any complete simple types at the top level (pretty much all | |
8944 | of them, for a language without namespaces), can be processed | |
8945 | directly. */ | |
8946 | if (parent_die == NULL | |
8947 | && part_die->has_specification == 0 | |
8948 | && part_die->is_declaration == 0 | |
d8228535 | 8949 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
8950 | || part_die->tag == DW_TAG_base_type |
8951 | || part_die->tag == DW_TAG_subrange_type)) | |
8952 | { | |
8953 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 8954 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 DJ |
8955 | VAR_DOMAIN, LOC_TYPEDEF, |
8956 | &cu->objfile->static_psymbols, | |
8957 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
93311388 | 8958 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
8959 | continue; |
8960 | } | |
8961 | ||
d8228535 JK |
8962 | /* The exception for DW_TAG_typedef with has_children above is |
8963 | a workaround of GCC PR debug/47510. In the case of this complaint | |
8964 | type_name_no_tag_or_error will error on such types later. | |
8965 | ||
8966 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
8967 | it could not find the child DIEs referenced later, this is checked | |
8968 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
8969 | ||
8970 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
8971 | complaint (&symfile_complaints, | |
8972 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
8973 | "- DIE at 0x%x [in module %s]"), | |
8974 | part_die->offset, cu->objfile->name); | |
8975 | ||
72bf9492 DJ |
8976 | /* If we're at the second level, and we're an enumerator, and |
8977 | our parent has no specification (meaning possibly lives in a | |
8978 | namespace elsewhere), then we can add the partial symbol now | |
8979 | instead of queueing it. */ | |
8980 | if (part_die->tag == DW_TAG_enumerator | |
8981 | && parent_die != NULL | |
8982 | && parent_die->die_parent == NULL | |
8983 | && parent_die->tag == DW_TAG_enumeration_type | |
8984 | && parent_die->has_specification == 0) | |
8985 | { | |
8986 | if (part_die->name == NULL) | |
3e43a32a MS |
8987 | complaint (&symfile_complaints, |
8988 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 8989 | else if (building_psymtab) |
04a679b8 | 8990 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 8991 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
8992 | (cu->language == language_cplus |
8993 | || cu->language == language_java) | |
72bf9492 DJ |
8994 | ? &cu->objfile->global_psymbols |
8995 | : &cu->objfile->static_psymbols, | |
8996 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
8997 | ||
93311388 | 8998 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
8999 | continue; |
9000 | } | |
9001 | ||
9002 | /* We'll save this DIE so link it in. */ | |
9003 | part_die->die_parent = parent_die; | |
9004 | part_die->die_sibling = NULL; | |
9005 | part_die->die_child = NULL; | |
9006 | ||
9007 | if (last_die && last_die == parent_die) | |
9008 | last_die->die_child = part_die; | |
9009 | else if (last_die) | |
9010 | last_die->die_sibling = part_die; | |
9011 | ||
9012 | last_die = part_die; | |
9013 | ||
9014 | if (first_die == NULL) | |
9015 | first_die = part_die; | |
9016 | ||
9017 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
9018 | find interesting need to be in the hash table, because we | |
9019 | also have the parent/sibling/child chains; only those that we | |
9020 | might refer to by offset later during partial symbol reading. | |
9021 | ||
9022 | For now this means things that might have be the target of a | |
9023 | DW_AT_specification, DW_AT_abstract_origin, or | |
9024 | DW_AT_extension. DW_AT_extension will refer only to | |
9025 | namespaces; DW_AT_abstract_origin refers to functions (and | |
9026 | many things under the function DIE, but we do not recurse | |
9027 | into function DIEs during partial symbol reading) and | |
9028 | possibly variables as well; DW_AT_specification refers to | |
9029 | declarations. Declarations ought to have the DW_AT_declaration | |
9030 | flag. It happens that GCC forgets to put it in sometimes, but | |
9031 | only for functions, not for types. | |
9032 | ||
9033 | Adding more things than necessary to the hash table is harmless | |
9034 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
9035 | wasted time in find_partial_die, when we reread the compilation |
9036 | unit with load_all_dies set. */ | |
72bf9492 | 9037 | |
5afb4e99 | 9038 | if (load_all |
72929c62 | 9039 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 9040 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
9041 | || abbrev->tag == DW_TAG_variable |
9042 | || abbrev->tag == DW_TAG_namespace | |
9043 | || part_die->is_declaration) | |
9044 | { | |
9045 | void **slot; | |
9046 | ||
9047 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9048 | part_die->offset, INSERT); | |
9049 | *slot = part_die; | |
9050 | } | |
9051 | ||
9052 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
9053 | sizeof (struct partial_die_info)); | |
9054 | ||
9055 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 9056 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
9057 | languages we have to, so that we can get at method physnames |
9058 | to infer fully qualified class names, for DW_AT_specification, | |
9059 | and for C++ template arguments. For C++, we also look one level | |
9060 | inside functions to find template arguments (if the name of the | |
9061 | function does not already contain the template arguments). | |
bc30ff58 JB |
9062 | |
9063 | For Ada, we need to scan the children of subprograms and lexical | |
9064 | blocks as well because Ada allows the definition of nested | |
9065 | entities that could be interesting for the debugger, such as | |
9066 | nested subprograms for instance. */ | |
72bf9492 | 9067 | if (last_die->has_children |
5afb4e99 DJ |
9068 | && (load_all |
9069 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 9070 | || last_die->tag == DW_TAG_module |
72bf9492 | 9071 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
9072 | || (cu->language == language_cplus |
9073 | && last_die->tag == DW_TAG_subprogram | |
9074 | && (last_die->name == NULL | |
9075 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
9076 | || (cu->language != language_c |
9077 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 9078 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 9079 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
9080 | || last_die->tag == DW_TAG_union_type)) |
9081 | || (cu->language == language_ada | |
9082 | && (last_die->tag == DW_TAG_subprogram | |
9083 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
9084 | { |
9085 | nesting_level++; | |
9086 | parent_die = last_die; | |
9087 | continue; | |
9088 | } | |
9089 | ||
9090 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 9091 | info_ptr = locate_pdi_sibling (last_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
9092 | |
9093 | /* Back to the top, do it again. */ | |
9094 | } | |
9095 | } | |
9096 | ||
c906108c SS |
9097 | /* Read a minimal amount of information into the minimal die structure. */ |
9098 | ||
fe1b8b76 | 9099 | static gdb_byte * |
72bf9492 DJ |
9100 | read_partial_die (struct partial_die_info *part_die, |
9101 | struct abbrev_info *abbrev, | |
9102 | unsigned int abbrev_len, bfd *abfd, | |
93311388 DE |
9103 | gdb_byte *buffer, gdb_byte *info_ptr, |
9104 | struct dwarf2_cu *cu) | |
c906108c | 9105 | { |
fa238c03 | 9106 | unsigned int i; |
c906108c | 9107 | struct attribute attr; |
c5aa993b | 9108 | int has_low_pc_attr = 0; |
c906108c SS |
9109 | int has_high_pc_attr = 0; |
9110 | ||
72bf9492 | 9111 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 9112 | |
93311388 | 9113 | part_die->offset = info_ptr - buffer; |
72bf9492 DJ |
9114 | |
9115 | info_ptr += abbrev_len; | |
9116 | ||
9117 | if (abbrev == NULL) | |
9118 | return info_ptr; | |
9119 | ||
c906108c SS |
9120 | part_die->tag = abbrev->tag; |
9121 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
9122 | |
9123 | for (i = 0; i < abbrev->num_attrs; ++i) | |
9124 | { | |
e7c27a73 | 9125 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
9126 | |
9127 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 9128 | partial symbol table. */ |
c906108c SS |
9129 | switch (attr.name) |
9130 | { | |
9131 | case DW_AT_name: | |
71c25dea TT |
9132 | switch (part_die->tag) |
9133 | { | |
9134 | case DW_TAG_compile_unit: | |
348e048f | 9135 | case DW_TAG_type_unit: |
71c25dea TT |
9136 | /* Compilation units have a DW_AT_name that is a filename, not |
9137 | a source language identifier. */ | |
9138 | case DW_TAG_enumeration_type: | |
9139 | case DW_TAG_enumerator: | |
9140 | /* These tags always have simple identifiers already; no need | |
9141 | to canonicalize them. */ | |
9142 | part_die->name = DW_STRING (&attr); | |
9143 | break; | |
9144 | default: | |
9145 | part_die->name | |
9146 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
95519e0e | 9147 | &cu->objfile->objfile_obstack); |
71c25dea TT |
9148 | break; |
9149 | } | |
c906108c | 9150 | break; |
31ef98ae | 9151 | case DW_AT_linkage_name: |
c906108c | 9152 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
9153 | /* Note that both forms of linkage name might appear. We |
9154 | assume they will be the same, and we only store the last | |
9155 | one we see. */ | |
94af9270 KS |
9156 | if (cu->language == language_ada) |
9157 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 9158 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
9159 | break; |
9160 | case DW_AT_low_pc: | |
9161 | has_low_pc_attr = 1; | |
9162 | part_die->lowpc = DW_ADDR (&attr); | |
9163 | break; | |
9164 | case DW_AT_high_pc: | |
9165 | has_high_pc_attr = 1; | |
9166 | part_die->highpc = DW_ADDR (&attr); | |
9167 | break; | |
9168 | case DW_AT_location: | |
0963b4bd | 9169 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
9170 | if (attr_form_is_block (&attr)) |
9171 | { | |
9172 | part_die->locdesc = DW_BLOCK (&attr); | |
9173 | } | |
3690dd37 | 9174 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 9175 | { |
4d3c2250 | 9176 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
9177 | } |
9178 | else | |
9179 | { | |
4d3c2250 KB |
9180 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
9181 | "partial symbol information"); | |
8e19ed76 | 9182 | } |
c906108c | 9183 | break; |
c906108c SS |
9184 | case DW_AT_external: |
9185 | part_die->is_external = DW_UNSND (&attr); | |
9186 | break; | |
9187 | case DW_AT_declaration: | |
9188 | part_die->is_declaration = DW_UNSND (&attr); | |
9189 | break; | |
9190 | case DW_AT_type: | |
9191 | part_die->has_type = 1; | |
9192 | break; | |
9193 | case DW_AT_abstract_origin: | |
9194 | case DW_AT_specification: | |
72bf9492 DJ |
9195 | case DW_AT_extension: |
9196 | part_die->has_specification = 1; | |
c764a876 | 9197 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
c906108c SS |
9198 | break; |
9199 | case DW_AT_sibling: | |
9200 | /* Ignore absolute siblings, they might point outside of | |
9201 | the current compile unit. */ | |
9202 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
9203 | complaint (&symfile_complaints, |
9204 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 9205 | else |
93311388 | 9206 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr); |
c906108c | 9207 | break; |
fa4028e9 JB |
9208 | case DW_AT_byte_size: |
9209 | part_die->has_byte_size = 1; | |
9210 | break; | |
68511cec CES |
9211 | case DW_AT_calling_convention: |
9212 | /* DWARF doesn't provide a way to identify a program's source-level | |
9213 | entry point. DW_AT_calling_convention attributes are only meant | |
9214 | to describe functions' calling conventions. | |
9215 | ||
9216 | However, because it's a necessary piece of information in | |
9217 | Fortran, and because DW_CC_program is the only piece of debugging | |
9218 | information whose definition refers to a 'main program' at all, | |
9219 | several compilers have begun marking Fortran main programs with | |
9220 | DW_CC_program --- even when those functions use the standard | |
9221 | calling conventions. | |
9222 | ||
9223 | So until DWARF specifies a way to provide this information and | |
9224 | compilers pick up the new representation, we'll support this | |
9225 | practice. */ | |
9226 | if (DW_UNSND (&attr) == DW_CC_program | |
9227 | && cu->language == language_fortran) | |
01f8c46d JK |
9228 | { |
9229 | set_main_name (part_die->name); | |
9230 | ||
9231 | /* As this DIE has a static linkage the name would be difficult | |
9232 | to look up later. */ | |
9233 | language_of_main = language_fortran; | |
9234 | } | |
68511cec | 9235 | break; |
c906108c SS |
9236 | default: |
9237 | break; | |
9238 | } | |
9239 | } | |
9240 | ||
9373cf26 JK |
9241 | if (has_low_pc_attr && has_high_pc_attr) |
9242 | { | |
9243 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
9244 | eliminate duplicate copies of functions and vtables and such. | |
9245 | The linker will arbitrarily choose one and discard the others. | |
9246 | The AT_*_pc values for such functions refer to local labels in | |
9247 | these sections. If the section from that file was discarded, the | |
9248 | labels are not in the output, so the relocs get a value of 0. | |
9249 | If this is a discarded function, mark the pc bounds as invalid, | |
9250 | so that GDB will ignore it. */ | |
9251 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
9252 | { | |
9253 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); | |
9254 | ||
9255 | complaint (&symfile_complaints, | |
9256 | _("DW_AT_low_pc %s is zero " | |
9257 | "for DIE at 0x%x [in module %s]"), | |
9258 | paddress (gdbarch, part_die->lowpc), | |
9259 | part_die->offset, cu->objfile->name); | |
9260 | } | |
9261 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
9262 | else if (part_die->lowpc >= part_die->highpc) | |
9263 | { | |
9264 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); | |
9265 | ||
9266 | complaint (&symfile_complaints, | |
9267 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
9268 | "for DIE at 0x%x [in module %s]"), | |
9269 | paddress (gdbarch, part_die->lowpc), | |
9270 | paddress (gdbarch, part_die->highpc), | |
9271 | part_die->offset, cu->objfile->name); | |
9272 | } | |
9273 | else | |
9274 | part_die->has_pc_info = 1; | |
9275 | } | |
85cbf3d3 | 9276 | |
c906108c SS |
9277 | return info_ptr; |
9278 | } | |
9279 | ||
72bf9492 DJ |
9280 | /* Find a cached partial DIE at OFFSET in CU. */ |
9281 | ||
9282 | static struct partial_die_info * | |
c764a876 | 9283 | find_partial_die_in_comp_unit (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
9284 | { |
9285 | struct partial_die_info *lookup_die = NULL; | |
9286 | struct partial_die_info part_die; | |
9287 | ||
9288 | part_die.offset = offset; | |
9289 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
9290 | ||
72bf9492 DJ |
9291 | return lookup_die; |
9292 | } | |
9293 | ||
348e048f DE |
9294 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
9295 | except in the case of .debug_types DIEs which do not reference | |
9296 | outside their CU (they do however referencing other types via | |
55f1336d | 9297 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
9298 | |
9299 | static struct partial_die_info * | |
c764a876 | 9300 | find_partial_die (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 | 9301 | { |
5afb4e99 DJ |
9302 | struct dwarf2_per_cu_data *per_cu = NULL; |
9303 | struct partial_die_info *pd = NULL; | |
72bf9492 | 9304 | |
348e048f DE |
9305 | if (cu->per_cu->from_debug_types) |
9306 | { | |
9307 | pd = find_partial_die_in_comp_unit (offset, cu); | |
9308 | if (pd != NULL) | |
9309 | return pd; | |
9310 | goto not_found; | |
9311 | } | |
9312 | ||
45452591 | 9313 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
9314 | { |
9315 | pd = find_partial_die_in_comp_unit (offset, cu); | |
9316 | if (pd != NULL) | |
9317 | return pd; | |
9318 | } | |
72bf9492 | 9319 | |
ae038cb0 DJ |
9320 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
9321 | ||
98bfdba5 PA |
9322 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
9323 | load_partial_comp_unit (per_cu, cu->objfile); | |
ae038cb0 DJ |
9324 | |
9325 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
9326 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
9327 | ||
9328 | if (pd == NULL && per_cu->load_all_dies == 0) | |
9329 | { | |
9330 | struct cleanup *back_to; | |
9331 | struct partial_die_info comp_unit_die; | |
9332 | struct abbrev_info *abbrev; | |
9333 | unsigned int bytes_read; | |
9334 | char *info_ptr; | |
9335 | ||
9336 | per_cu->load_all_dies = 1; | |
9337 | ||
9338 | /* Re-read the DIEs. */ | |
9339 | back_to = make_cleanup (null_cleanup, 0); | |
9340 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
9341 | { | |
9342 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
53d72f98 | 9343 | make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); |
5afb4e99 | 9344 | } |
dce234bc | 9345 | info_ptr = (dwarf2_per_objfile->info.buffer |
d00adf39 DE |
9346 | + per_cu->cu->header.offset |
9347 | + per_cu->cu->header.first_die_offset); | |
5afb4e99 DJ |
9348 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); |
9349 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
93311388 DE |
9350 | per_cu->cu->objfile->obfd, |
9351 | dwarf2_per_objfile->info.buffer, info_ptr, | |
5afb4e99 DJ |
9352 | per_cu->cu); |
9353 | if (comp_unit_die.has_children) | |
93311388 DE |
9354 | load_partial_dies (per_cu->cu->objfile->obfd, |
9355 | dwarf2_per_objfile->info.buffer, info_ptr, | |
9356 | 0, per_cu->cu); | |
5afb4e99 DJ |
9357 | do_cleanups (back_to); |
9358 | ||
9359 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
9360 | } | |
9361 | ||
348e048f DE |
9362 | not_found: |
9363 | ||
5afb4e99 DJ |
9364 | if (pd == NULL) |
9365 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
9366 | _("could not find partial DIE 0x%x " |
9367 | "in cache [from module %s]\n"), | |
5afb4e99 DJ |
9368 | offset, bfd_get_filename (cu->objfile->obfd)); |
9369 | return pd; | |
72bf9492 DJ |
9370 | } |
9371 | ||
abc72ce4 DE |
9372 | /* See if we can figure out if the class lives in a namespace. We do |
9373 | this by looking for a member function; its demangled name will | |
9374 | contain namespace info, if there is any. */ | |
9375 | ||
9376 | static void | |
9377 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
9378 | struct dwarf2_cu *cu) | |
9379 | { | |
9380 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
9381 | what template types look like, because the demangler | |
9382 | frequently doesn't give the same name as the debug info. We | |
9383 | could fix this by only using the demangled name to get the | |
9384 | prefix (but see comment in read_structure_type). */ | |
9385 | ||
9386 | struct partial_die_info *real_pdi; | |
9387 | struct partial_die_info *child_pdi; | |
9388 | ||
9389 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
9390 | we should not do this. We'll prepend the parent's fully qualified | |
9391 | name when we create the partial symbol. */ | |
9392 | ||
9393 | real_pdi = struct_pdi; | |
9394 | while (real_pdi->has_specification) | |
9395 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); | |
9396 | ||
9397 | if (real_pdi->die_parent != NULL) | |
9398 | return; | |
9399 | ||
9400 | for (child_pdi = struct_pdi->die_child; | |
9401 | child_pdi != NULL; | |
9402 | child_pdi = child_pdi->die_sibling) | |
9403 | { | |
9404 | if (child_pdi->tag == DW_TAG_subprogram | |
9405 | && child_pdi->linkage_name != NULL) | |
9406 | { | |
9407 | char *actual_class_name | |
9408 | = language_class_name_from_physname (cu->language_defn, | |
9409 | child_pdi->linkage_name); | |
9410 | if (actual_class_name != NULL) | |
9411 | { | |
9412 | struct_pdi->name | |
9413 | = obsavestring (actual_class_name, | |
9414 | strlen (actual_class_name), | |
9415 | &cu->objfile->objfile_obstack); | |
9416 | xfree (actual_class_name); | |
9417 | } | |
9418 | break; | |
9419 | } | |
9420 | } | |
9421 | } | |
9422 | ||
72bf9492 DJ |
9423 | /* Adjust PART_DIE before generating a symbol for it. This function |
9424 | may set the is_external flag or change the DIE's name. */ | |
9425 | ||
9426 | static void | |
9427 | fixup_partial_die (struct partial_die_info *part_die, | |
9428 | struct dwarf2_cu *cu) | |
9429 | { | |
abc72ce4 DE |
9430 | /* Once we've fixed up a die, there's no point in doing so again. |
9431 | This also avoids a memory leak if we were to call | |
9432 | guess_partial_die_structure_name multiple times. */ | |
9433 | if (part_die->fixup_called) | |
9434 | return; | |
9435 | ||
72bf9492 DJ |
9436 | /* If we found a reference attribute and the DIE has no name, try |
9437 | to find a name in the referred to DIE. */ | |
9438 | ||
9439 | if (part_die->name == NULL && part_die->has_specification) | |
9440 | { | |
9441 | struct partial_die_info *spec_die; | |
72bf9492 | 9442 | |
10b3939b | 9443 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 9444 | |
10b3939b | 9445 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
9446 | |
9447 | if (spec_die->name) | |
9448 | { | |
9449 | part_die->name = spec_die->name; | |
9450 | ||
9451 | /* Copy DW_AT_external attribute if it is set. */ | |
9452 | if (spec_die->is_external) | |
9453 | part_die->is_external = spec_die->is_external; | |
9454 | } | |
9455 | } | |
9456 | ||
9457 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
9458 | |
9459 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
9460 | part_die->name = "(anonymous namespace)"; | |
9461 | ||
abc72ce4 DE |
9462 | /* If there is no parent die to provide a namespace, and there are |
9463 | children, see if we can determine the namespace from their linkage | |
9464 | name. | |
9465 | NOTE: We need to do this even if cu->has_namespace_info != 0. | |
9466 | gcc-4.5 -gdwarf-4 can drop the enclosing namespace. */ | |
9467 | if (cu->language == language_cplus | |
9468 | && dwarf2_per_objfile->types.asection != NULL | |
9469 | && part_die->die_parent == NULL | |
9470 | && part_die->has_children | |
9471 | && (part_die->tag == DW_TAG_class_type | |
9472 | || part_die->tag == DW_TAG_structure_type | |
9473 | || part_die->tag == DW_TAG_union_type)) | |
9474 | guess_partial_die_structure_name (part_die, cu); | |
9475 | ||
53832f31 TT |
9476 | /* GCC might emit a nameless struct or union that has a linkage |
9477 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
9478 | if (part_die->name == NULL | |
9479 | && (part_die->tag == DW_TAG_structure_type | |
9480 | || part_die->tag == DW_TAG_union_type | |
9481 | || part_die->tag == DW_TAG_class_type) | |
9482 | && part_die->linkage_name != NULL) | |
9483 | { | |
9484 | char *demangled; | |
9485 | ||
9486 | demangled = cplus_demangle (part_die->linkage_name, DMGL_TYPES); | |
9487 | if (demangled) | |
9488 | { | |
9489 | part_die->name = obsavestring (demangled, strlen (demangled), | |
9490 | &cu->objfile->objfile_obstack); | |
9491 | xfree (demangled); | |
9492 | } | |
9493 | } | |
9494 | ||
abc72ce4 | 9495 | part_die->fixup_called = 1; |
72bf9492 DJ |
9496 | } |
9497 | ||
a8329558 | 9498 | /* Read an attribute value described by an attribute form. */ |
c906108c | 9499 | |
fe1b8b76 | 9500 | static gdb_byte * |
a8329558 | 9501 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 9502 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 9503 | struct dwarf2_cu *cu) |
c906108c | 9504 | { |
e7c27a73 | 9505 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
9506 | unsigned int bytes_read; |
9507 | struct dwarf_block *blk; | |
9508 | ||
a8329558 KW |
9509 | attr->form = form; |
9510 | switch (form) | |
c906108c | 9511 | { |
c906108c | 9512 | case DW_FORM_ref_addr: |
ae411497 TT |
9513 | if (cu->header.version == 2) |
9514 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); | |
9515 | else | |
3e43a32a MS |
9516 | DW_ADDR (attr) = read_offset (abfd, info_ptr, |
9517 | &cu->header, &bytes_read); | |
ae411497 TT |
9518 | info_ptr += bytes_read; |
9519 | break; | |
9520 | case DW_FORM_addr: | |
e7c27a73 | 9521 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 9522 | info_ptr += bytes_read; |
c906108c SS |
9523 | break; |
9524 | case DW_FORM_block2: | |
7b5a2f43 | 9525 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9526 | blk->size = read_2_bytes (abfd, info_ptr); |
9527 | info_ptr += 2; | |
9528 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9529 | info_ptr += blk->size; | |
9530 | DW_BLOCK (attr) = blk; | |
9531 | break; | |
9532 | case DW_FORM_block4: | |
7b5a2f43 | 9533 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9534 | blk->size = read_4_bytes (abfd, info_ptr); |
9535 | info_ptr += 4; | |
9536 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9537 | info_ptr += blk->size; | |
9538 | DW_BLOCK (attr) = blk; | |
9539 | break; | |
9540 | case DW_FORM_data2: | |
9541 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
9542 | info_ptr += 2; | |
9543 | break; | |
9544 | case DW_FORM_data4: | |
9545 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
9546 | info_ptr += 4; | |
9547 | break; | |
9548 | case DW_FORM_data8: | |
9549 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
9550 | info_ptr += 8; | |
9551 | break; | |
2dc7f7b3 TT |
9552 | case DW_FORM_sec_offset: |
9553 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
9554 | info_ptr += bytes_read; | |
9555 | break; | |
c906108c | 9556 | case DW_FORM_string: |
9b1c24c8 | 9557 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 9558 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
9559 | info_ptr += bytes_read; |
9560 | break; | |
4bdf3d34 JJ |
9561 | case DW_FORM_strp: |
9562 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
9563 | &bytes_read); | |
8285870a | 9564 | DW_STRING_IS_CANONICAL (attr) = 0; |
4bdf3d34 JJ |
9565 | info_ptr += bytes_read; |
9566 | break; | |
2dc7f7b3 | 9567 | case DW_FORM_exprloc: |
c906108c | 9568 | case DW_FORM_block: |
7b5a2f43 | 9569 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9570 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
9571 | info_ptr += bytes_read; | |
9572 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9573 | info_ptr += blk->size; | |
9574 | DW_BLOCK (attr) = blk; | |
9575 | break; | |
9576 | case DW_FORM_block1: | |
7b5a2f43 | 9577 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9578 | blk->size = read_1_byte (abfd, info_ptr); |
9579 | info_ptr += 1; | |
9580 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9581 | info_ptr += blk->size; | |
9582 | DW_BLOCK (attr) = blk; | |
9583 | break; | |
9584 | case DW_FORM_data1: | |
9585 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
9586 | info_ptr += 1; | |
9587 | break; | |
9588 | case DW_FORM_flag: | |
9589 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
9590 | info_ptr += 1; | |
9591 | break; | |
2dc7f7b3 TT |
9592 | case DW_FORM_flag_present: |
9593 | DW_UNSND (attr) = 1; | |
9594 | break; | |
c906108c SS |
9595 | case DW_FORM_sdata: |
9596 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
9597 | info_ptr += bytes_read; | |
9598 | break; | |
9599 | case DW_FORM_udata: | |
9600 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9601 | info_ptr += bytes_read; | |
9602 | break; | |
9603 | case DW_FORM_ref1: | |
10b3939b | 9604 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
9605 | info_ptr += 1; |
9606 | break; | |
9607 | case DW_FORM_ref2: | |
10b3939b | 9608 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
9609 | info_ptr += 2; |
9610 | break; | |
9611 | case DW_FORM_ref4: | |
10b3939b | 9612 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
9613 | info_ptr += 4; |
9614 | break; | |
613e1657 | 9615 | case DW_FORM_ref8: |
10b3939b | 9616 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
9617 | info_ptr += 8; |
9618 | break; | |
55f1336d | 9619 | case DW_FORM_ref_sig8: |
348e048f DE |
9620 | /* Convert the signature to something we can record in DW_UNSND |
9621 | for later lookup. | |
9622 | NOTE: This is NULL if the type wasn't found. */ | |
9623 | DW_SIGNATURED_TYPE (attr) = | |
9624 | lookup_signatured_type (cu->objfile, read_8_bytes (abfd, info_ptr)); | |
9625 | info_ptr += 8; | |
9626 | break; | |
c906108c | 9627 | case DW_FORM_ref_udata: |
10b3939b DJ |
9628 | DW_ADDR (attr) = (cu->header.offset |
9629 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
9630 | info_ptr += bytes_read; |
9631 | break; | |
c906108c | 9632 | case DW_FORM_indirect: |
a8329558 KW |
9633 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
9634 | info_ptr += bytes_read; | |
e7c27a73 | 9635 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 9636 | break; |
c906108c | 9637 | default: |
8a3fe4f8 | 9638 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
9639 | dwarf_form_name (form), |
9640 | bfd_get_filename (abfd)); | |
c906108c | 9641 | } |
28e94949 JB |
9642 | |
9643 | /* We have seen instances where the compiler tried to emit a byte | |
9644 | size attribute of -1 which ended up being encoded as an unsigned | |
9645 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
9646 | an object of this size seems pretty unlikely so we can relatively | |
9647 | safely treat these cases as if the size attribute was invalid and | |
9648 | treat them as zero by default. */ | |
9649 | if (attr->name == DW_AT_byte_size | |
9650 | && form == DW_FORM_data4 | |
9651 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
9652 | { |
9653 | complaint | |
9654 | (&symfile_complaints, | |
43bbcdc2 PH |
9655 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
9656 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
9657 | DW_UNSND (attr) = 0; |
9658 | } | |
28e94949 | 9659 | |
c906108c SS |
9660 | return info_ptr; |
9661 | } | |
9662 | ||
a8329558 KW |
9663 | /* Read an attribute described by an abbreviated attribute. */ |
9664 | ||
fe1b8b76 | 9665 | static gdb_byte * |
a8329558 | 9666 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 9667 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
9668 | { |
9669 | attr->name = abbrev->name; | |
e7c27a73 | 9670 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
9671 | } |
9672 | ||
0963b4bd | 9673 | /* Read dwarf information from a buffer. */ |
c906108c SS |
9674 | |
9675 | static unsigned int | |
fe1b8b76 | 9676 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 9677 | { |
fe1b8b76 | 9678 | return bfd_get_8 (abfd, buf); |
c906108c SS |
9679 | } |
9680 | ||
9681 | static int | |
fe1b8b76 | 9682 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 9683 | { |
fe1b8b76 | 9684 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
9685 | } |
9686 | ||
9687 | static unsigned int | |
fe1b8b76 | 9688 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9689 | { |
fe1b8b76 | 9690 | return bfd_get_16 (abfd, buf); |
c906108c SS |
9691 | } |
9692 | ||
9693 | static int | |
fe1b8b76 | 9694 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9695 | { |
fe1b8b76 | 9696 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
9697 | } |
9698 | ||
9699 | static unsigned int | |
fe1b8b76 | 9700 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9701 | { |
fe1b8b76 | 9702 | return bfd_get_32 (abfd, buf); |
c906108c SS |
9703 | } |
9704 | ||
9705 | static int | |
fe1b8b76 | 9706 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9707 | { |
fe1b8b76 | 9708 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
9709 | } |
9710 | ||
93311388 | 9711 | static ULONGEST |
fe1b8b76 | 9712 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9713 | { |
fe1b8b76 | 9714 | return bfd_get_64 (abfd, buf); |
c906108c SS |
9715 | } |
9716 | ||
9717 | static CORE_ADDR | |
fe1b8b76 | 9718 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 9719 | unsigned int *bytes_read) |
c906108c | 9720 | { |
e7c27a73 | 9721 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
9722 | CORE_ADDR retval = 0; |
9723 | ||
107d2387 | 9724 | if (cu_header->signed_addr_p) |
c906108c | 9725 | { |
107d2387 AC |
9726 | switch (cu_header->addr_size) |
9727 | { | |
9728 | case 2: | |
fe1b8b76 | 9729 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
9730 | break; |
9731 | case 4: | |
fe1b8b76 | 9732 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
9733 | break; |
9734 | case 8: | |
fe1b8b76 | 9735 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
9736 | break; |
9737 | default: | |
8e65ff28 | 9738 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9739 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 9740 | bfd_get_filename (abfd)); |
107d2387 AC |
9741 | } |
9742 | } | |
9743 | else | |
9744 | { | |
9745 | switch (cu_header->addr_size) | |
9746 | { | |
9747 | case 2: | |
fe1b8b76 | 9748 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
9749 | break; |
9750 | case 4: | |
fe1b8b76 | 9751 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
9752 | break; |
9753 | case 8: | |
fe1b8b76 | 9754 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
9755 | break; |
9756 | default: | |
8e65ff28 | 9757 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
9758 | _("read_address: bad switch, " |
9759 | "unsigned [in module %s]"), | |
659b0389 | 9760 | bfd_get_filename (abfd)); |
107d2387 | 9761 | } |
c906108c | 9762 | } |
64367e0a | 9763 | |
107d2387 AC |
9764 | *bytes_read = cu_header->addr_size; |
9765 | return retval; | |
c906108c SS |
9766 | } |
9767 | ||
f7ef9339 | 9768 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
9769 | specification allows the initial length to take up either 4 bytes |
9770 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
9771 | bytes describe the length and all offsets will be 8 bytes in length | |
9772 | instead of 4. | |
9773 | ||
f7ef9339 KB |
9774 | An older, non-standard 64-bit format is also handled by this |
9775 | function. The older format in question stores the initial length | |
9776 | as an 8-byte quantity without an escape value. Lengths greater | |
9777 | than 2^32 aren't very common which means that the initial 4 bytes | |
9778 | is almost always zero. Since a length value of zero doesn't make | |
9779 | sense for the 32-bit format, this initial zero can be considered to | |
9780 | be an escape value which indicates the presence of the older 64-bit | |
9781 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
9782 | greater than 4GB. If it becomes necessary to handle lengths |
9783 | somewhat larger than 4GB, we could allow other small values (such | |
9784 | as the non-sensical values of 1, 2, and 3) to also be used as | |
9785 | escape values indicating the presence of the old format. | |
f7ef9339 | 9786 | |
917c78fc MK |
9787 | The value returned via bytes_read should be used to increment the |
9788 | relevant pointer after calling read_initial_length(). | |
c764a876 | 9789 | |
613e1657 KB |
9790 | [ Note: read_initial_length() and read_offset() are based on the |
9791 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 9792 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
9793 | from: |
9794 | ||
f7ef9339 | 9795 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 9796 | |
613e1657 KB |
9797 | This document is only a draft and is subject to change. (So beware.) |
9798 | ||
f7ef9339 | 9799 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
9800 | determined empirically by examining 64-bit ELF files produced by |
9801 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
9802 | |
9803 | - Kevin, July 16, 2002 | |
613e1657 KB |
9804 | ] */ |
9805 | ||
9806 | static LONGEST | |
c764a876 | 9807 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 9808 | { |
fe1b8b76 | 9809 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 9810 | |
dd373385 | 9811 | if (length == 0xffffffff) |
613e1657 | 9812 | { |
fe1b8b76 | 9813 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 9814 | *bytes_read = 12; |
613e1657 | 9815 | } |
dd373385 | 9816 | else if (length == 0) |
f7ef9339 | 9817 | { |
dd373385 | 9818 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 9819 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 9820 | *bytes_read = 8; |
f7ef9339 | 9821 | } |
613e1657 KB |
9822 | else |
9823 | { | |
9824 | *bytes_read = 4; | |
613e1657 KB |
9825 | } |
9826 | ||
c764a876 DE |
9827 | return length; |
9828 | } | |
dd373385 | 9829 | |
c764a876 DE |
9830 | /* Cover function for read_initial_length. |
9831 | Returns the length of the object at BUF, and stores the size of the | |
9832 | initial length in *BYTES_READ and stores the size that offsets will be in | |
9833 | *OFFSET_SIZE. | |
9834 | If the initial length size is not equivalent to that specified in | |
9835 | CU_HEADER then issue a complaint. | |
9836 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 9837 | |
c764a876 DE |
9838 | static LONGEST |
9839 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
9840 | const struct comp_unit_head *cu_header, | |
9841 | unsigned int *bytes_read, | |
9842 | unsigned int *offset_size) | |
9843 | { | |
9844 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
9845 | ||
9846 | gdb_assert (cu_header->initial_length_size == 4 | |
9847 | || cu_header->initial_length_size == 8 | |
9848 | || cu_header->initial_length_size == 12); | |
9849 | ||
9850 | if (cu_header->initial_length_size != *bytes_read) | |
9851 | complaint (&symfile_complaints, | |
9852 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 9853 | |
c764a876 | 9854 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 9855 | return length; |
613e1657 KB |
9856 | } |
9857 | ||
9858 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 9859 | given by cu_header->offset_size. */ |
613e1657 KB |
9860 | |
9861 | static LONGEST | |
fe1b8b76 | 9862 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 9863 | unsigned int *bytes_read) |
c764a876 DE |
9864 | { |
9865 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 9866 | |
c764a876 DE |
9867 | *bytes_read = cu_header->offset_size; |
9868 | return offset; | |
9869 | } | |
9870 | ||
9871 | /* Read an offset from the data stream. */ | |
9872 | ||
9873 | static LONGEST | |
9874 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
9875 | { |
9876 | LONGEST retval = 0; | |
9877 | ||
c764a876 | 9878 | switch (offset_size) |
613e1657 KB |
9879 | { |
9880 | case 4: | |
fe1b8b76 | 9881 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
9882 | break; |
9883 | case 8: | |
fe1b8b76 | 9884 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
9885 | break; |
9886 | default: | |
8e65ff28 | 9887 | internal_error (__FILE__, __LINE__, |
c764a876 | 9888 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 9889 | bfd_get_filename (abfd)); |
613e1657 KB |
9890 | } |
9891 | ||
917c78fc | 9892 | return retval; |
613e1657 KB |
9893 | } |
9894 | ||
fe1b8b76 JB |
9895 | static gdb_byte * |
9896 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
9897 | { |
9898 | /* If the size of a host char is 8 bits, we can return a pointer | |
9899 | to the buffer, otherwise we have to copy the data to a buffer | |
9900 | allocated on the temporary obstack. */ | |
4bdf3d34 | 9901 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 9902 | return buf; |
c906108c SS |
9903 | } |
9904 | ||
9905 | static char * | |
9b1c24c8 | 9906 | read_direct_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
9907 | { |
9908 | /* If the size of a host char is 8 bits, we can return a pointer | |
9909 | to the string, otherwise we have to copy the string to a buffer | |
9910 | allocated on the temporary obstack. */ | |
4bdf3d34 | 9911 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
9912 | if (*buf == '\0') |
9913 | { | |
9914 | *bytes_read_ptr = 1; | |
9915 | return NULL; | |
9916 | } | |
fe1b8b76 JB |
9917 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
9918 | return (char *) buf; | |
4bdf3d34 JJ |
9919 | } |
9920 | ||
9921 | static char * | |
fe1b8b76 | 9922 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
9923 | const struct comp_unit_head *cu_header, |
9924 | unsigned int *bytes_read_ptr) | |
9925 | { | |
c764a876 | 9926 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); |
c906108c | 9927 | |
be391dca | 9928 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 9929 | if (dwarf2_per_objfile->str.buffer == NULL) |
c906108c | 9930 | { |
8a3fe4f8 | 9931 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 9932 | bfd_get_filename (abfd)); |
4bdf3d34 | 9933 | return NULL; |
c906108c | 9934 | } |
dce234bc | 9935 | if (str_offset >= dwarf2_per_objfile->str.size) |
c906108c | 9936 | { |
3e43a32a MS |
9937 | error (_("DW_FORM_strp pointing outside of " |
9938 | ".debug_str section [in module %s]"), | |
9939 | bfd_get_filename (abfd)); | |
c906108c SS |
9940 | return NULL; |
9941 | } | |
4bdf3d34 | 9942 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 9943 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 9944 | return NULL; |
dce234bc | 9945 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
9946 | } |
9947 | ||
ce5d95e1 | 9948 | static unsigned long |
fe1b8b76 | 9949 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 9950 | { |
ce5d95e1 JB |
9951 | unsigned long result; |
9952 | unsigned int num_read; | |
c906108c SS |
9953 | int i, shift; |
9954 | unsigned char byte; | |
9955 | ||
9956 | result = 0; | |
9957 | shift = 0; | |
9958 | num_read = 0; | |
9959 | i = 0; | |
9960 | while (1) | |
9961 | { | |
fe1b8b76 | 9962 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
9963 | buf++; |
9964 | num_read++; | |
ce5d95e1 | 9965 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
9966 | if ((byte & 128) == 0) |
9967 | { | |
9968 | break; | |
9969 | } | |
9970 | shift += 7; | |
9971 | } | |
9972 | *bytes_read_ptr = num_read; | |
9973 | return result; | |
9974 | } | |
9975 | ||
ce5d95e1 | 9976 | static long |
fe1b8b76 | 9977 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 9978 | { |
ce5d95e1 | 9979 | long result; |
77e0b926 | 9980 | int i, shift, num_read; |
c906108c SS |
9981 | unsigned char byte; |
9982 | ||
9983 | result = 0; | |
9984 | shift = 0; | |
c906108c SS |
9985 | num_read = 0; |
9986 | i = 0; | |
9987 | while (1) | |
9988 | { | |
fe1b8b76 | 9989 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
9990 | buf++; |
9991 | num_read++; | |
ce5d95e1 | 9992 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
9993 | shift += 7; |
9994 | if ((byte & 128) == 0) | |
9995 | { | |
9996 | break; | |
9997 | } | |
9998 | } | |
77e0b926 DJ |
9999 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
10000 | result |= -(((long)1) << shift); | |
c906108c SS |
10001 | *bytes_read_ptr = num_read; |
10002 | return result; | |
10003 | } | |
10004 | ||
4bb7a0a7 DJ |
10005 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
10006 | ||
fe1b8b76 JB |
10007 | static gdb_byte * |
10008 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
10009 | { |
10010 | int byte; | |
10011 | ||
10012 | while (1) | |
10013 | { | |
fe1b8b76 | 10014 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
10015 | buf++; |
10016 | if ((byte & 128) == 0) | |
10017 | return buf; | |
10018 | } | |
10019 | } | |
10020 | ||
c906108c | 10021 | static void |
e142c38c | 10022 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
10023 | { |
10024 | switch (lang) | |
10025 | { | |
10026 | case DW_LANG_C89: | |
76bee0cc | 10027 | case DW_LANG_C99: |
c906108c | 10028 | case DW_LANG_C: |
e142c38c | 10029 | cu->language = language_c; |
c906108c SS |
10030 | break; |
10031 | case DW_LANG_C_plus_plus: | |
e142c38c | 10032 | cu->language = language_cplus; |
c906108c | 10033 | break; |
6aecb9c2 JB |
10034 | case DW_LANG_D: |
10035 | cu->language = language_d; | |
10036 | break; | |
c906108c SS |
10037 | case DW_LANG_Fortran77: |
10038 | case DW_LANG_Fortran90: | |
b21b22e0 | 10039 | case DW_LANG_Fortran95: |
e142c38c | 10040 | cu->language = language_fortran; |
c906108c SS |
10041 | break; |
10042 | case DW_LANG_Mips_Assembler: | |
e142c38c | 10043 | cu->language = language_asm; |
c906108c | 10044 | break; |
bebd888e | 10045 | case DW_LANG_Java: |
e142c38c | 10046 | cu->language = language_java; |
bebd888e | 10047 | break; |
c906108c | 10048 | case DW_LANG_Ada83: |
8aaf0b47 | 10049 | case DW_LANG_Ada95: |
bc5f45f8 JB |
10050 | cu->language = language_ada; |
10051 | break; | |
72019c9c GM |
10052 | case DW_LANG_Modula2: |
10053 | cu->language = language_m2; | |
10054 | break; | |
fe8e67fd PM |
10055 | case DW_LANG_Pascal83: |
10056 | cu->language = language_pascal; | |
10057 | break; | |
22566fbd DJ |
10058 | case DW_LANG_ObjC: |
10059 | cu->language = language_objc; | |
10060 | break; | |
c906108c SS |
10061 | case DW_LANG_Cobol74: |
10062 | case DW_LANG_Cobol85: | |
c906108c | 10063 | default: |
e142c38c | 10064 | cu->language = language_minimal; |
c906108c SS |
10065 | break; |
10066 | } | |
e142c38c | 10067 | cu->language_defn = language_def (cu->language); |
c906108c SS |
10068 | } |
10069 | ||
10070 | /* Return the named attribute or NULL if not there. */ | |
10071 | ||
10072 | static struct attribute * | |
e142c38c | 10073 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
10074 | { |
10075 | unsigned int i; | |
10076 | struct attribute *spec = NULL; | |
10077 | ||
10078 | for (i = 0; i < die->num_attrs; ++i) | |
10079 | { | |
10080 | if (die->attrs[i].name == name) | |
10b3939b | 10081 | return &die->attrs[i]; |
c906108c SS |
10082 | if (die->attrs[i].name == DW_AT_specification |
10083 | || die->attrs[i].name == DW_AT_abstract_origin) | |
10084 | spec = &die->attrs[i]; | |
10085 | } | |
c906108c | 10086 | |
10b3939b | 10087 | if (spec) |
f2f0e013 DJ |
10088 | { |
10089 | die = follow_die_ref (die, spec, &cu); | |
10090 | return dwarf2_attr (die, name, cu); | |
10091 | } | |
c5aa993b | 10092 | |
c906108c SS |
10093 | return NULL; |
10094 | } | |
10095 | ||
348e048f DE |
10096 | /* Return the named attribute or NULL if not there, |
10097 | but do not follow DW_AT_specification, etc. | |
10098 | This is for use in contexts where we're reading .debug_types dies. | |
10099 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
10100 | back up the chain, and we want to go down. */ | |
10101 | ||
10102 | static struct attribute * | |
10103 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name, | |
10104 | struct dwarf2_cu *cu) | |
10105 | { | |
10106 | unsigned int i; | |
10107 | ||
10108 | for (i = 0; i < die->num_attrs; ++i) | |
10109 | if (die->attrs[i].name == name) | |
10110 | return &die->attrs[i]; | |
10111 | ||
10112 | return NULL; | |
10113 | } | |
10114 | ||
05cf31d1 JB |
10115 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
10116 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 10117 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
10118 | |
10119 | static int | |
10120 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
10121 | { | |
10122 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
10123 | ||
10124 | return (attr && DW_UNSND (attr)); | |
10125 | } | |
10126 | ||
3ca72b44 | 10127 | static int |
e142c38c | 10128 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 10129 | { |
05cf31d1 JB |
10130 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
10131 | which value is non-zero. However, we have to be careful with | |
10132 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
10133 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
10134 | end up accidently finding a declaration attribute that belongs | |
10135 | to a different DIE referenced by the specification attribute, | |
10136 | even though the given DIE does not have a declaration attribute. */ | |
10137 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
10138 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
10139 | } |
10140 | ||
63d06c5c | 10141 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 10142 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
10143 | containing the return value on output. If there is no |
10144 | specification, but there is an abstract origin, that is | |
10145 | returned. */ | |
63d06c5c DC |
10146 | |
10147 | static struct die_info * | |
f2f0e013 | 10148 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 10149 | { |
f2f0e013 DJ |
10150 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
10151 | *spec_cu); | |
63d06c5c | 10152 | |
edb3359d DJ |
10153 | if (spec_attr == NULL) |
10154 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
10155 | ||
63d06c5c DC |
10156 | if (spec_attr == NULL) |
10157 | return NULL; | |
10158 | else | |
f2f0e013 | 10159 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 10160 | } |
c906108c | 10161 | |
debd256d | 10162 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
10163 | refers to. |
10164 | NOTE: This is also used as a "cleanup" function. */ | |
10165 | ||
debd256d JB |
10166 | static void |
10167 | free_line_header (struct line_header *lh) | |
10168 | { | |
10169 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 10170 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
10171 | |
10172 | /* Remember that all the lh->file_names[i].name pointers are | |
10173 | pointers into debug_line_buffer, and don't need to be freed. */ | |
10174 | if (lh->file_names) | |
a8bc7b56 | 10175 | xfree (lh->file_names); |
debd256d JB |
10176 | |
10177 | /* Similarly for the include directory names. */ | |
10178 | if (lh->include_dirs) | |
a8bc7b56 | 10179 | xfree (lh->include_dirs); |
debd256d | 10180 | |
a8bc7b56 | 10181 | xfree (lh); |
debd256d JB |
10182 | } |
10183 | ||
debd256d | 10184 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 10185 | |
debd256d JB |
10186 | static void |
10187 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 10188 | { |
debd256d JB |
10189 | /* Grow the array if necessary. */ |
10190 | if (lh->include_dirs_size == 0) | |
c5aa993b | 10191 | { |
debd256d JB |
10192 | lh->include_dirs_size = 1; /* for testing */ |
10193 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
10194 | * sizeof (*lh->include_dirs)); | |
10195 | } | |
10196 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
10197 | { | |
10198 | lh->include_dirs_size *= 2; | |
10199 | lh->include_dirs = xrealloc (lh->include_dirs, | |
10200 | (lh->include_dirs_size | |
10201 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 10202 | } |
c906108c | 10203 | |
debd256d JB |
10204 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
10205 | } | |
6e70227d | 10206 | |
debd256d | 10207 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 10208 | |
debd256d JB |
10209 | static void |
10210 | add_file_name (struct line_header *lh, | |
10211 | char *name, | |
10212 | unsigned int dir_index, | |
10213 | unsigned int mod_time, | |
10214 | unsigned int length) | |
10215 | { | |
10216 | struct file_entry *fe; | |
10217 | ||
10218 | /* Grow the array if necessary. */ | |
10219 | if (lh->file_names_size == 0) | |
10220 | { | |
10221 | lh->file_names_size = 1; /* for testing */ | |
10222 | lh->file_names = xmalloc (lh->file_names_size | |
10223 | * sizeof (*lh->file_names)); | |
10224 | } | |
10225 | else if (lh->num_file_names >= lh->file_names_size) | |
10226 | { | |
10227 | lh->file_names_size *= 2; | |
10228 | lh->file_names = xrealloc (lh->file_names, | |
10229 | (lh->file_names_size | |
10230 | * sizeof (*lh->file_names))); | |
10231 | } | |
10232 | ||
10233 | fe = &lh->file_names[lh->num_file_names++]; | |
10234 | fe->name = name; | |
10235 | fe->dir_index = dir_index; | |
10236 | fe->mod_time = mod_time; | |
10237 | fe->length = length; | |
aaa75496 | 10238 | fe->included_p = 0; |
cb1df416 | 10239 | fe->symtab = NULL; |
debd256d | 10240 | } |
6e70227d | 10241 | |
debd256d | 10242 | /* Read the statement program header starting at OFFSET in |
6502dd73 DJ |
10243 | .debug_line, according to the endianness of ABFD. Return a pointer |
10244 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
10245 | |
10246 | NOTE: the strings in the include directory and file name tables of | |
10247 | the returned object point into debug_line_buffer, and must not be | |
10248 | freed. */ | |
ae2de4f8 | 10249 | |
debd256d JB |
10250 | static struct line_header * |
10251 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 10252 | struct dwarf2_cu *cu) |
debd256d JB |
10253 | { |
10254 | struct cleanup *back_to; | |
10255 | struct line_header *lh; | |
fe1b8b76 | 10256 | gdb_byte *line_ptr; |
c764a876 | 10257 | unsigned int bytes_read, offset_size; |
debd256d JB |
10258 | int i; |
10259 | char *cur_dir, *cur_file; | |
10260 | ||
be391dca | 10261 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->line); |
dce234bc | 10262 | if (dwarf2_per_objfile->line.buffer == NULL) |
debd256d | 10263 | { |
e2e0b3e5 | 10264 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
10265 | return 0; |
10266 | } | |
10267 | ||
a738430d MK |
10268 | /* Make sure that at least there's room for the total_length field. |
10269 | That could be 12 bytes long, but we're just going to fudge that. */ | |
dce234bc | 10270 | if (offset + 4 >= dwarf2_per_objfile->line.size) |
debd256d | 10271 | { |
4d3c2250 | 10272 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
10273 | return 0; |
10274 | } | |
10275 | ||
10276 | lh = xmalloc (sizeof (*lh)); | |
10277 | memset (lh, 0, sizeof (*lh)); | |
10278 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
10279 | (void *) lh); | |
10280 | ||
dce234bc | 10281 | line_ptr = dwarf2_per_objfile->line.buffer + offset; |
debd256d | 10282 | |
a738430d | 10283 | /* Read in the header. */ |
6e70227d | 10284 | lh->total_length = |
c764a876 DE |
10285 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
10286 | &bytes_read, &offset_size); | |
debd256d | 10287 | line_ptr += bytes_read; |
dce234bc PP |
10288 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line.buffer |
10289 | + dwarf2_per_objfile->line.size)) | |
debd256d | 10290 | { |
4d3c2250 | 10291 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
10292 | return 0; |
10293 | } | |
10294 | lh->statement_program_end = line_ptr + lh->total_length; | |
10295 | lh->version = read_2_bytes (abfd, line_ptr); | |
10296 | line_ptr += 2; | |
c764a876 DE |
10297 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
10298 | line_ptr += offset_size; | |
debd256d JB |
10299 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
10300 | line_ptr += 1; | |
2dc7f7b3 TT |
10301 | if (lh->version >= 4) |
10302 | { | |
10303 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
10304 | line_ptr += 1; | |
10305 | } | |
10306 | else | |
10307 | lh->maximum_ops_per_instruction = 1; | |
10308 | ||
10309 | if (lh->maximum_ops_per_instruction == 0) | |
10310 | { | |
10311 | lh->maximum_ops_per_instruction = 1; | |
10312 | complaint (&symfile_complaints, | |
3e43a32a MS |
10313 | _("invalid maximum_ops_per_instruction " |
10314 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
10315 | } |
10316 | ||
debd256d JB |
10317 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
10318 | line_ptr += 1; | |
10319 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
10320 | line_ptr += 1; | |
10321 | lh->line_range = read_1_byte (abfd, line_ptr); | |
10322 | line_ptr += 1; | |
10323 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
10324 | line_ptr += 1; | |
10325 | lh->standard_opcode_lengths | |
fe1b8b76 | 10326 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
10327 | |
10328 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
10329 | for (i = 1; i < lh->opcode_base; ++i) | |
10330 | { | |
10331 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
10332 | line_ptr += 1; | |
10333 | } | |
10334 | ||
a738430d | 10335 | /* Read directory table. */ |
9b1c24c8 | 10336 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
10337 | { |
10338 | line_ptr += bytes_read; | |
10339 | add_include_dir (lh, cur_dir); | |
10340 | } | |
10341 | line_ptr += bytes_read; | |
10342 | ||
a738430d | 10343 | /* Read file name table. */ |
9b1c24c8 | 10344 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
10345 | { |
10346 | unsigned int dir_index, mod_time, length; | |
10347 | ||
10348 | line_ptr += bytes_read; | |
10349 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10350 | line_ptr += bytes_read; | |
10351 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10352 | line_ptr += bytes_read; | |
10353 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10354 | line_ptr += bytes_read; | |
10355 | ||
10356 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
10357 | } | |
10358 | line_ptr += bytes_read; | |
6e70227d | 10359 | lh->statement_program_start = line_ptr; |
debd256d | 10360 | |
dce234bc PP |
10361 | if (line_ptr > (dwarf2_per_objfile->line.buffer |
10362 | + dwarf2_per_objfile->line.size)) | |
4d3c2250 | 10363 | complaint (&symfile_complaints, |
3e43a32a MS |
10364 | _("line number info header doesn't " |
10365 | "fit in `.debug_line' section")); | |
debd256d JB |
10366 | |
10367 | discard_cleanups (back_to); | |
10368 | return lh; | |
10369 | } | |
c906108c | 10370 | |
5fb290d7 DJ |
10371 | /* This function exists to work around a bug in certain compilers |
10372 | (particularly GCC 2.95), in which the first line number marker of a | |
10373 | function does not show up until after the prologue, right before | |
10374 | the second line number marker. This function shifts ADDRESS down | |
10375 | to the beginning of the function if necessary, and is called on | |
10376 | addresses passed to record_line. */ | |
10377 | ||
10378 | static CORE_ADDR | |
e142c38c | 10379 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
10380 | { |
10381 | struct function_range *fn; | |
10382 | ||
10383 | /* Find the function_range containing address. */ | |
e142c38c | 10384 | if (!cu->first_fn) |
5fb290d7 DJ |
10385 | return address; |
10386 | ||
e142c38c DJ |
10387 | if (!cu->cached_fn) |
10388 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 10389 | |
e142c38c | 10390 | fn = cu->cached_fn; |
5fb290d7 DJ |
10391 | while (fn) |
10392 | if (fn->lowpc <= address && fn->highpc > address) | |
10393 | goto found; | |
10394 | else | |
10395 | fn = fn->next; | |
10396 | ||
e142c38c DJ |
10397 | fn = cu->first_fn; |
10398 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
10399 | if (fn->lowpc <= address && fn->highpc > address) |
10400 | goto found; | |
10401 | else | |
10402 | fn = fn->next; | |
10403 | ||
10404 | return address; | |
10405 | ||
10406 | found: | |
10407 | if (fn->seen_line) | |
10408 | return address; | |
10409 | if (address != fn->lowpc) | |
4d3c2250 | 10410 | complaint (&symfile_complaints, |
e2e0b3e5 | 10411 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 10412 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
10413 | fn->seen_line = 1; |
10414 | return fn->lowpc; | |
10415 | } | |
10416 | ||
c6da4cef DE |
10417 | /* Subroutine of dwarf_decode_lines to simplify it. |
10418 | Return the file name of the psymtab for included file FILE_INDEX | |
10419 | in line header LH of PST. | |
10420 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
10421 | If space for the result is malloc'd, it will be freed by a cleanup. | |
10422 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
10423 | ||
10424 | static char * | |
10425 | psymtab_include_file_name (const struct line_header *lh, int file_index, | |
10426 | const struct partial_symtab *pst, | |
10427 | const char *comp_dir) | |
10428 | { | |
10429 | const struct file_entry fe = lh->file_names [file_index]; | |
10430 | char *include_name = fe.name; | |
10431 | char *include_name_to_compare = include_name; | |
10432 | char *dir_name = NULL; | |
72b9f47f TT |
10433 | const char *pst_filename; |
10434 | char *copied_name = NULL; | |
c6da4cef DE |
10435 | int file_is_pst; |
10436 | ||
10437 | if (fe.dir_index) | |
10438 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
10439 | ||
10440 | if (!IS_ABSOLUTE_PATH (include_name) | |
10441 | && (dir_name != NULL || comp_dir != NULL)) | |
10442 | { | |
10443 | /* Avoid creating a duplicate psymtab for PST. | |
10444 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
10445 | Before we do the comparison, however, we need to account | |
10446 | for DIR_NAME and COMP_DIR. | |
10447 | First prepend dir_name (if non-NULL). If we still don't | |
10448 | have an absolute path prepend comp_dir (if non-NULL). | |
10449 | However, the directory we record in the include-file's | |
10450 | psymtab does not contain COMP_DIR (to match the | |
10451 | corresponding symtab(s)). | |
10452 | ||
10453 | Example: | |
10454 | ||
10455 | bash$ cd /tmp | |
10456 | bash$ gcc -g ./hello.c | |
10457 | include_name = "hello.c" | |
10458 | dir_name = "." | |
10459 | DW_AT_comp_dir = comp_dir = "/tmp" | |
10460 | DW_AT_name = "./hello.c" */ | |
10461 | ||
10462 | if (dir_name != NULL) | |
10463 | { | |
10464 | include_name = concat (dir_name, SLASH_STRING, | |
10465 | include_name, (char *)NULL); | |
10466 | include_name_to_compare = include_name; | |
10467 | make_cleanup (xfree, include_name); | |
10468 | } | |
10469 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
10470 | { | |
10471 | include_name_to_compare = concat (comp_dir, SLASH_STRING, | |
10472 | include_name, (char *)NULL); | |
10473 | } | |
10474 | } | |
10475 | ||
10476 | pst_filename = pst->filename; | |
10477 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
10478 | { | |
72b9f47f TT |
10479 | copied_name = concat (pst->dirname, SLASH_STRING, |
10480 | pst_filename, (char *)NULL); | |
10481 | pst_filename = copied_name; | |
c6da4cef DE |
10482 | } |
10483 | ||
1e3fad37 | 10484 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef DE |
10485 | |
10486 | if (include_name_to_compare != include_name) | |
10487 | xfree (include_name_to_compare); | |
72b9f47f TT |
10488 | if (copied_name != NULL) |
10489 | xfree (copied_name); | |
c6da4cef DE |
10490 | |
10491 | if (file_is_pst) | |
10492 | return NULL; | |
10493 | return include_name; | |
10494 | } | |
10495 | ||
c91513d8 PP |
10496 | /* Ignore this record_line request. */ |
10497 | ||
10498 | static void | |
10499 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
10500 | { | |
10501 | return; | |
10502 | } | |
10503 | ||
aaa75496 JB |
10504 | /* Decode the Line Number Program (LNP) for the given line_header |
10505 | structure and CU. The actual information extracted and the type | |
10506 | of structures created from the LNP depends on the value of PST. | |
10507 | ||
10508 | 1. If PST is NULL, then this procedure uses the data from the program | |
10509 | to create all necessary symbol tables, and their linetables. | |
6e70227d | 10510 | |
aaa75496 JB |
10511 | 2. If PST is not NULL, this procedure reads the program to determine |
10512 | the list of files included by the unit represented by PST, and | |
c6da4cef DE |
10513 | builds all the associated partial symbol tables. |
10514 | ||
10515 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
10516 | It is used for relative paths in the line table. | |
10517 | NOTE: When processing partial symtabs (pst != NULL), | |
10518 | comp_dir == pst->dirname. | |
10519 | ||
10520 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
10521 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
10522 | symtab we don't use it in the name of the psymtabs we create. | |
10523 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
10524 | A good testcase for this is mb-inline.exp. */ | |
debd256d | 10525 | |
c906108c | 10526 | static void |
72b9f47f | 10527 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, bfd *abfd, |
aaa75496 | 10528 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 10529 | { |
a8c50c1f | 10530 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 10531 | gdb_byte *line_end; |
a8c50c1f | 10532 | unsigned int bytes_read, extended_len; |
c906108c | 10533 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
10534 | CORE_ADDR baseaddr; |
10535 | struct objfile *objfile = cu->objfile; | |
fbf65064 | 10536 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 10537 | const int decode_for_pst_p = (pst != NULL); |
cb1df416 | 10538 | struct subfile *last_subfile = NULL, *first_subfile = current_subfile; |
c91513d8 PP |
10539 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
10540 | = record_line; | |
e142c38c DJ |
10541 | |
10542 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 10543 | |
debd256d JB |
10544 | line_ptr = lh->statement_program_start; |
10545 | line_end = lh->statement_program_end; | |
c906108c SS |
10546 | |
10547 | /* Read the statement sequences until there's nothing left. */ | |
10548 | while (line_ptr < line_end) | |
10549 | { | |
10550 | /* state machine registers */ | |
10551 | CORE_ADDR address = 0; | |
10552 | unsigned int file = 1; | |
10553 | unsigned int line = 1; | |
10554 | unsigned int column = 0; | |
debd256d | 10555 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
10556 | int basic_block = 0; |
10557 | int end_sequence = 0; | |
fbf65064 | 10558 | CORE_ADDR addr; |
2dc7f7b3 | 10559 | unsigned char op_index = 0; |
c906108c | 10560 | |
aaa75496 | 10561 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 10562 | { |
aaa75496 | 10563 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
10564 | /* lh->include_dirs and lh->file_names are 0-based, but the |
10565 | directory and file name numbers in the statement program | |
10566 | are 1-based. */ | |
10567 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 10568 | char *dir = NULL; |
a738430d | 10569 | |
debd256d JB |
10570 | if (fe->dir_index) |
10571 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
10572 | |
10573 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
10574 | } |
10575 | ||
a738430d | 10576 | /* Decode the table. */ |
c5aa993b | 10577 | while (!end_sequence) |
c906108c SS |
10578 | { |
10579 | op_code = read_1_byte (abfd, line_ptr); | |
10580 | line_ptr += 1; | |
59205f5a JB |
10581 | if (line_ptr > line_end) |
10582 | { | |
10583 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
10584 | break; | |
10585 | } | |
9aa1fe7e | 10586 | |
debd256d | 10587 | if (op_code >= lh->opcode_base) |
6e70227d | 10588 | { |
a738430d | 10589 | /* Special operand. */ |
debd256d | 10590 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
10591 | address += (((op_index + (adj_opcode / lh->line_range)) |
10592 | / lh->maximum_ops_per_instruction) | |
10593 | * lh->minimum_instruction_length); | |
10594 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
10595 | % lh->maximum_ops_per_instruction); | |
debd256d | 10596 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 10597 | if (lh->num_file_names < file || file == 0) |
25e43795 | 10598 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
10599 | /* For now we ignore lines not starting on an |
10600 | instruction boundary. */ | |
10601 | else if (op_index == 0) | |
25e43795 DJ |
10602 | { |
10603 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 10604 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
10605 | { |
10606 | if (last_subfile != current_subfile) | |
10607 | { | |
10608 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
10609 | if (last_subfile) | |
c91513d8 | 10610 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
10611 | last_subfile = current_subfile; |
10612 | } | |
25e43795 | 10613 | /* Append row to matrix using current values. */ |
fbf65064 UW |
10614 | addr = check_cu_functions (address, cu); |
10615 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
c91513d8 | 10616 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 10617 | } |
25e43795 | 10618 | } |
ca5f395d | 10619 | basic_block = 0; |
9aa1fe7e GK |
10620 | } |
10621 | else switch (op_code) | |
c906108c SS |
10622 | { |
10623 | case DW_LNS_extended_op: | |
3e43a32a MS |
10624 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
10625 | &bytes_read); | |
473b7be6 | 10626 | line_ptr += bytes_read; |
a8c50c1f | 10627 | extended_end = line_ptr + extended_len; |
c906108c SS |
10628 | extended_op = read_1_byte (abfd, line_ptr); |
10629 | line_ptr += 1; | |
10630 | switch (extended_op) | |
10631 | { | |
10632 | case DW_LNE_end_sequence: | |
c91513d8 | 10633 | p_record_line = record_line; |
c906108c | 10634 | end_sequence = 1; |
c906108c SS |
10635 | break; |
10636 | case DW_LNE_set_address: | |
e7c27a73 | 10637 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
10638 | |
10639 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
10640 | { | |
10641 | /* This line table is for a function which has been | |
10642 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
10643 | ||
10644 | long line_offset | |
10645 | = line_ptr - dwarf2_per_objfile->line.buffer; | |
10646 | ||
10647 | complaint (&symfile_complaints, | |
10648 | _(".debug_line address at offset 0x%lx is 0 " | |
10649 | "[in module %s]"), | |
10650 | line_offset, cu->objfile->name); | |
10651 | p_record_line = noop_record_line; | |
10652 | } | |
10653 | ||
2dc7f7b3 | 10654 | op_index = 0; |
107d2387 AC |
10655 | line_ptr += bytes_read; |
10656 | address += baseaddr; | |
c906108c SS |
10657 | break; |
10658 | case DW_LNE_define_file: | |
debd256d JB |
10659 | { |
10660 | char *cur_file; | |
10661 | unsigned int dir_index, mod_time, length; | |
6e70227d | 10662 | |
3e43a32a MS |
10663 | cur_file = read_direct_string (abfd, line_ptr, |
10664 | &bytes_read); | |
debd256d JB |
10665 | line_ptr += bytes_read; |
10666 | dir_index = | |
10667 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10668 | line_ptr += bytes_read; | |
10669 | mod_time = | |
10670 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10671 | line_ptr += bytes_read; | |
10672 | length = | |
10673 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10674 | line_ptr += bytes_read; | |
10675 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
10676 | } | |
c906108c | 10677 | break; |
d0c6ba3d CC |
10678 | case DW_LNE_set_discriminator: |
10679 | /* The discriminator is not interesting to the debugger; | |
10680 | just ignore it. */ | |
10681 | line_ptr = extended_end; | |
10682 | break; | |
c906108c | 10683 | default: |
4d3c2250 | 10684 | complaint (&symfile_complaints, |
e2e0b3e5 | 10685 | _("mangled .debug_line section")); |
debd256d | 10686 | return; |
c906108c | 10687 | } |
a8c50c1f DJ |
10688 | /* Make sure that we parsed the extended op correctly. If e.g. |
10689 | we expected a different address size than the producer used, | |
10690 | we may have read the wrong number of bytes. */ | |
10691 | if (line_ptr != extended_end) | |
10692 | { | |
10693 | complaint (&symfile_complaints, | |
10694 | _("mangled .debug_line section")); | |
10695 | return; | |
10696 | } | |
c906108c SS |
10697 | break; |
10698 | case DW_LNS_copy: | |
59205f5a | 10699 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
10700 | dwarf2_debug_line_missing_file_complaint (); |
10701 | else | |
366da635 | 10702 | { |
25e43795 | 10703 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 10704 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
10705 | { |
10706 | if (last_subfile != current_subfile) | |
10707 | { | |
10708 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
10709 | if (last_subfile) | |
c91513d8 | 10710 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
10711 | last_subfile = current_subfile; |
10712 | } | |
10713 | addr = check_cu_functions (address, cu); | |
10714 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
c91513d8 | 10715 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 10716 | } |
366da635 | 10717 | } |
c906108c SS |
10718 | basic_block = 0; |
10719 | break; | |
10720 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
10721 | { |
10722 | CORE_ADDR adjust | |
10723 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10724 | ||
10725 | address += (((op_index + adjust) | |
10726 | / lh->maximum_ops_per_instruction) | |
10727 | * lh->minimum_instruction_length); | |
10728 | op_index = ((op_index + adjust) | |
10729 | % lh->maximum_ops_per_instruction); | |
10730 | line_ptr += bytes_read; | |
10731 | } | |
c906108c SS |
10732 | break; |
10733 | case DW_LNS_advance_line: | |
10734 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
10735 | line_ptr += bytes_read; | |
10736 | break; | |
10737 | case DW_LNS_set_file: | |
debd256d | 10738 | { |
a738430d MK |
10739 | /* The arrays lh->include_dirs and lh->file_names are |
10740 | 0-based, but the directory and file name numbers in | |
10741 | the statement program are 1-based. */ | |
debd256d | 10742 | struct file_entry *fe; |
4f1520fb | 10743 | char *dir = NULL; |
a738430d | 10744 | |
debd256d JB |
10745 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
10746 | line_ptr += bytes_read; | |
59205f5a | 10747 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
10748 | dwarf2_debug_line_missing_file_complaint (); |
10749 | else | |
10750 | { | |
10751 | fe = &lh->file_names[file - 1]; | |
10752 | if (fe->dir_index) | |
10753 | dir = lh->include_dirs[fe->dir_index - 1]; | |
10754 | if (!decode_for_pst_p) | |
10755 | { | |
10756 | last_subfile = current_subfile; | |
10757 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
10758 | } | |
10759 | } | |
debd256d | 10760 | } |
c906108c SS |
10761 | break; |
10762 | case DW_LNS_set_column: | |
10763 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10764 | line_ptr += bytes_read; | |
10765 | break; | |
10766 | case DW_LNS_negate_stmt: | |
10767 | is_stmt = (!is_stmt); | |
10768 | break; | |
10769 | case DW_LNS_set_basic_block: | |
10770 | basic_block = 1; | |
10771 | break; | |
c2c6d25f JM |
10772 | /* Add to the address register of the state machine the |
10773 | address increment value corresponding to special opcode | |
a738430d MK |
10774 | 255. I.e., this value is scaled by the minimum |
10775 | instruction length since special opcode 255 would have | |
b021a221 | 10776 | scaled the increment. */ |
c906108c | 10777 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
10778 | { |
10779 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
10780 | ||
10781 | address += (((op_index + adjust) | |
10782 | / lh->maximum_ops_per_instruction) | |
10783 | * lh->minimum_instruction_length); | |
10784 | op_index = ((op_index + adjust) | |
10785 | % lh->maximum_ops_per_instruction); | |
10786 | } | |
c906108c SS |
10787 | break; |
10788 | case DW_LNS_fixed_advance_pc: | |
10789 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 10790 | op_index = 0; |
c906108c SS |
10791 | line_ptr += 2; |
10792 | break; | |
9aa1fe7e | 10793 | default: |
a738430d MK |
10794 | { |
10795 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 10796 | int i; |
a738430d | 10797 | |
debd256d | 10798 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
10799 | { |
10800 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10801 | line_ptr += bytes_read; | |
10802 | } | |
10803 | } | |
c906108c SS |
10804 | } |
10805 | } | |
59205f5a JB |
10806 | if (lh->num_file_names < file || file == 0) |
10807 | dwarf2_debug_line_missing_file_complaint (); | |
10808 | else | |
10809 | { | |
10810 | lh->file_names[file - 1].included_p = 1; | |
10811 | if (!decode_for_pst_p) | |
fbf65064 UW |
10812 | { |
10813 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 10814 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 10815 | } |
59205f5a | 10816 | } |
c906108c | 10817 | } |
aaa75496 JB |
10818 | |
10819 | if (decode_for_pst_p) | |
10820 | { | |
10821 | int file_index; | |
10822 | ||
10823 | /* Now that we're done scanning the Line Header Program, we can | |
10824 | create the psymtab of each included file. */ | |
10825 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
10826 | if (lh->file_names[file_index].included_p == 1) | |
10827 | { | |
c6da4cef DE |
10828 | char *include_name = |
10829 | psymtab_include_file_name (lh, file_index, pst, comp_dir); | |
10830 | if (include_name != NULL) | |
aaa75496 JB |
10831 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
10832 | } | |
10833 | } | |
cb1df416 DJ |
10834 | else |
10835 | { | |
10836 | /* Make sure a symtab is created for every file, even files | |
10837 | which contain only variables (i.e. no code with associated | |
10838 | line numbers). */ | |
10839 | ||
10840 | int i; | |
10841 | struct file_entry *fe; | |
10842 | ||
10843 | for (i = 0; i < lh->num_file_names; i++) | |
10844 | { | |
10845 | char *dir = NULL; | |
9a619af0 | 10846 | |
cb1df416 DJ |
10847 | fe = &lh->file_names[i]; |
10848 | if (fe->dir_index) | |
10849 | dir = lh->include_dirs[fe->dir_index - 1]; | |
10850 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
10851 | ||
10852 | /* Skip the main file; we don't need it, and it must be | |
10853 | allocated last, so that it will show up before the | |
10854 | non-primary symtabs in the objfile's symtab list. */ | |
10855 | if (current_subfile == first_subfile) | |
10856 | continue; | |
10857 | ||
10858 | if (current_subfile->symtab == NULL) | |
10859 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
10860 | cu->objfile); | |
10861 | fe->symtab = current_subfile->symtab; | |
10862 | } | |
10863 | } | |
c906108c SS |
10864 | } |
10865 | ||
10866 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
10867 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
10868 | or NULL if not known. COMP_DIR is the compilation directory for the |
10869 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
10870 | This routine tries to keep line numbers from identical absolute and |
10871 | relative file names in a common subfile. | |
10872 | ||
10873 | Using the `list' example from the GDB testsuite, which resides in | |
10874 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
10875 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
10876 | ||
c5aa993b JM |
10877 | DW_AT_name: /srcdir/list0.c |
10878 | DW_AT_comp_dir: /compdir | |
357e46e7 | 10879 | files.files[0].name: list0.h |
c5aa993b | 10880 | files.files[0].dir: /srcdir |
357e46e7 | 10881 | files.files[1].name: list0.c |
c5aa993b | 10882 | files.files[1].dir: /srcdir |
c906108c SS |
10883 | |
10884 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
10885 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
10886 | start_subfile will ensure that this happens provided that we pass the | |
10887 | concatenation of files.files[1].dir and files.files[1].name as the | |
10888 | subfile's name. */ | |
c906108c SS |
10889 | |
10890 | static void | |
3e43a32a MS |
10891 | dwarf2_start_subfile (char *filename, const char *dirname, |
10892 | const char *comp_dir) | |
c906108c | 10893 | { |
4f1520fb FR |
10894 | char *fullname; |
10895 | ||
10896 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
10897 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
10898 | second argument to start_subfile. To be consistent, we do the | |
10899 | same here. In order not to lose the line information directory, | |
10900 | we concatenate it to the filename when it makes sense. | |
10901 | Note that the Dwarf3 standard says (speaking of filenames in line | |
10902 | information): ``The directory index is ignored for file names | |
10903 | that represent full path names''. Thus ignoring dirname in the | |
10904 | `else' branch below isn't an issue. */ | |
c906108c | 10905 | |
d5166ae1 | 10906 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
10907 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
10908 | else | |
10909 | fullname = filename; | |
c906108c | 10910 | |
4f1520fb FR |
10911 | start_subfile (fullname, comp_dir); |
10912 | ||
10913 | if (fullname != filename) | |
10914 | xfree (fullname); | |
c906108c SS |
10915 | } |
10916 | ||
4c2df51b DJ |
10917 | static void |
10918 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 10919 | struct dwarf2_cu *cu) |
4c2df51b | 10920 | { |
e7c27a73 DJ |
10921 | struct objfile *objfile = cu->objfile; |
10922 | struct comp_unit_head *cu_header = &cu->header; | |
10923 | ||
4c2df51b DJ |
10924 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
10925 | code here to turn a symbol with DW_AT_external and a | |
10926 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
10927 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
10928 | with some versions of binutils) where shared libraries could have | |
10929 | relocations against symbols in their debug information - the | |
10930 | minimal symbol would have the right address, but the debug info | |
10931 | would not. It's no longer necessary, because we will explicitly | |
10932 | apply relocations when we read in the debug information now. */ | |
10933 | ||
10934 | /* A DW_AT_location attribute with no contents indicates that a | |
10935 | variable has been optimized away. */ | |
10936 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
10937 | { | |
10938 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
10939 | return; | |
10940 | } | |
10941 | ||
10942 | /* Handle one degenerate form of location expression specially, to | |
10943 | preserve GDB's previous behavior when section offsets are | |
10944 | specified. If this is just a DW_OP_addr then mark this symbol | |
10945 | as LOC_STATIC. */ | |
10946 | ||
10947 | if (attr_form_is_block (attr) | |
10948 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
10949 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
10950 | { | |
891d2f0b | 10951 | unsigned int dummy; |
4c2df51b DJ |
10952 | |
10953 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 10954 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
907fc202 | 10955 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
10956 | fixup_symbol_section (sym, objfile); |
10957 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
10958 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
10959 | return; |
10960 | } | |
10961 | ||
10962 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
10963 | expression evaluator, and use LOC_COMPUTED only when necessary | |
10964 | (i.e. when the value of a register or memory location is | |
10965 | referenced, or a thread-local block, etc.). Then again, it might | |
10966 | not be worthwhile. I'm assuming that it isn't unless performance | |
10967 | or memory numbers show me otherwise. */ | |
10968 | ||
e7c27a73 | 10969 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
10970 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
10971 | } | |
10972 | ||
c906108c SS |
10973 | /* Given a pointer to a DWARF information entry, figure out if we need |
10974 | to make a symbol table entry for it, and if so, create a new entry | |
10975 | and return a pointer to it. | |
10976 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
10977 | used the passed type. |
10978 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
10979 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
10980 | |
10981 | static struct symbol * | |
34eaf542 TT |
10982 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
10983 | struct symbol *space) | |
c906108c | 10984 | { |
e7c27a73 | 10985 | struct objfile *objfile = cu->objfile; |
c906108c SS |
10986 | struct symbol *sym = NULL; |
10987 | char *name; | |
10988 | struct attribute *attr = NULL; | |
10989 | struct attribute *attr2 = NULL; | |
e142c38c | 10990 | CORE_ADDR baseaddr; |
e37fd15a SW |
10991 | struct pending **list_to_add = NULL; |
10992 | ||
edb3359d | 10993 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
10994 | |
10995 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 10996 | |
94af9270 | 10997 | name = dwarf2_name (die, cu); |
c906108c SS |
10998 | if (name) |
10999 | { | |
94af9270 | 11000 | const char *linkagename; |
34eaf542 | 11001 | int suppress_add = 0; |
94af9270 | 11002 | |
34eaf542 TT |
11003 | if (space) |
11004 | sym = space; | |
11005 | else | |
11006 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
c906108c | 11007 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
11008 | |
11009 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
33e5013e | 11010 | SYMBOL_SET_LANGUAGE (sym, cu->language); |
94af9270 KS |
11011 | linkagename = dwarf2_physname (name, die, cu); |
11012 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 11013 | |
f55ee35c JK |
11014 | /* Fortran does not have mangling standard and the mangling does differ |
11015 | between gfortran, iFort etc. */ | |
11016 | if (cu->language == language_fortran | |
b250c185 | 11017 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d SW |
11018 | symbol_set_demangled_name (&(sym->ginfo), |
11019 | (char *) dwarf2_full_name (name, die, cu), | |
11020 | NULL); | |
f55ee35c | 11021 | |
c906108c | 11022 | /* Default assumptions. |
c5aa993b | 11023 | Use the passed type or decode it from the die. */ |
176620f1 | 11024 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 11025 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
11026 | if (type != NULL) |
11027 | SYMBOL_TYPE (sym) = type; | |
11028 | else | |
e7c27a73 | 11029 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
11030 | attr = dwarf2_attr (die, |
11031 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
11032 | cu); | |
c906108c SS |
11033 | if (attr) |
11034 | { | |
11035 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
11036 | } | |
cb1df416 | 11037 | |
edb3359d DJ |
11038 | attr = dwarf2_attr (die, |
11039 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
11040 | cu); | |
cb1df416 DJ |
11041 | if (attr) |
11042 | { | |
11043 | int file_index = DW_UNSND (attr); | |
9a619af0 | 11044 | |
cb1df416 DJ |
11045 | if (cu->line_header == NULL |
11046 | || file_index > cu->line_header->num_file_names) | |
11047 | complaint (&symfile_complaints, | |
11048 | _("file index out of range")); | |
1c3d648d | 11049 | else if (file_index > 0) |
cb1df416 DJ |
11050 | { |
11051 | struct file_entry *fe; | |
9a619af0 | 11052 | |
cb1df416 DJ |
11053 | fe = &cu->line_header->file_names[file_index - 1]; |
11054 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
11055 | } | |
11056 | } | |
11057 | ||
c906108c SS |
11058 | switch (die->tag) |
11059 | { | |
11060 | case DW_TAG_label: | |
e142c38c | 11061 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
11062 | if (attr) |
11063 | { | |
11064 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
11065 | } | |
0f5238ed TT |
11066 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
11067 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
c906108c | 11068 | SYMBOL_CLASS (sym) = LOC_LABEL; |
0f5238ed | 11069 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
11070 | break; |
11071 | case DW_TAG_subprogram: | |
11072 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
11073 | finish_block. */ | |
11074 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 11075 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
11076 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
11077 | || cu->language == language_ada) | |
c906108c | 11078 | { |
2cfa0c8d JB |
11079 | /* Subprograms marked external are stored as a global symbol. |
11080 | Ada subprograms, whether marked external or not, are always | |
11081 | stored as a global symbol, because we want to be able to | |
11082 | access them globally. For instance, we want to be able | |
11083 | to break on a nested subprogram without having to | |
11084 | specify the context. */ | |
e37fd15a | 11085 | list_to_add = &global_symbols; |
c906108c SS |
11086 | } |
11087 | else | |
11088 | { | |
e37fd15a | 11089 | list_to_add = cu->list_in_scope; |
c906108c SS |
11090 | } |
11091 | break; | |
edb3359d DJ |
11092 | case DW_TAG_inlined_subroutine: |
11093 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
11094 | finish_block. */ | |
11095 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
11096 | SYMBOL_INLINED (sym) = 1; | |
11097 | /* Do not add the symbol to any lists. It will be found via | |
11098 | BLOCK_FUNCTION from the blockvector. */ | |
11099 | break; | |
34eaf542 TT |
11100 | case DW_TAG_template_value_param: |
11101 | suppress_add = 1; | |
11102 | /* Fall through. */ | |
72929c62 | 11103 | case DW_TAG_constant: |
c906108c | 11104 | case DW_TAG_variable: |
254e6b9e | 11105 | case DW_TAG_member: |
0963b4bd MS |
11106 | /* Compilation with minimal debug info may result in |
11107 | variables with missing type entries. Change the | |
11108 | misleading `void' type to something sensible. */ | |
c906108c | 11109 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 11110 | SYMBOL_TYPE (sym) |
46bf5051 | 11111 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 11112 | |
e142c38c | 11113 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
11114 | /* In the case of DW_TAG_member, we should only be called for |
11115 | static const members. */ | |
11116 | if (die->tag == DW_TAG_member) | |
11117 | { | |
3863f96c DE |
11118 | /* dwarf2_add_field uses die_is_declaration, |
11119 | so we do the same. */ | |
254e6b9e DE |
11120 | gdb_assert (die_is_declaration (die, cu)); |
11121 | gdb_assert (attr); | |
11122 | } | |
c906108c SS |
11123 | if (attr) |
11124 | { | |
e7c27a73 | 11125 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 11126 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 11127 | if (!suppress_add) |
34eaf542 TT |
11128 | { |
11129 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 11130 | list_to_add = &global_symbols; |
34eaf542 | 11131 | else |
e37fd15a | 11132 | list_to_add = cu->list_in_scope; |
34eaf542 | 11133 | } |
c906108c SS |
11134 | break; |
11135 | } | |
e142c38c | 11136 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
11137 | if (attr) |
11138 | { | |
e7c27a73 | 11139 | var_decode_location (attr, sym, cu); |
e142c38c | 11140 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
caac4577 JG |
11141 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
11142 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
11143 | && !dwarf2_per_objfile->has_section_at_zero) | |
11144 | { | |
11145 | /* When a static variable is eliminated by the linker, | |
11146 | the corresponding debug information is not stripped | |
11147 | out, but the variable address is set to null; | |
11148 | do not add such variables into symbol table. */ | |
11149 | } | |
11150 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 11151 | { |
f55ee35c JK |
11152 | /* Workaround gfortran PR debug/40040 - it uses |
11153 | DW_AT_location for variables in -fPIC libraries which may | |
11154 | get overriden by other libraries/executable and get | |
11155 | a different address. Resolve it by the minimal symbol | |
11156 | which may come from inferior's executable using copy | |
11157 | relocation. Make this workaround only for gfortran as for | |
11158 | other compilers GDB cannot guess the minimal symbol | |
11159 | Fortran mangling kind. */ | |
11160 | if (cu->language == language_fortran && die->parent | |
11161 | && die->parent->tag == DW_TAG_module | |
11162 | && cu->producer | |
11163 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
11164 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
11165 | ||
1c809c68 TT |
11166 | /* A variable with DW_AT_external is never static, |
11167 | but it may be block-scoped. */ | |
11168 | list_to_add = (cu->list_in_scope == &file_symbols | |
11169 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 11170 | } |
c906108c | 11171 | else |
e37fd15a | 11172 | list_to_add = cu->list_in_scope; |
c906108c SS |
11173 | } |
11174 | else | |
11175 | { | |
11176 | /* We do not know the address of this symbol. | |
c5aa993b JM |
11177 | If it is an external symbol and we have type information |
11178 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
11179 | The address of the variable will then be determined from | |
11180 | the minimal symbol table whenever the variable is | |
11181 | referenced. */ | |
e142c38c | 11182 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 11183 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 11184 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 11185 | { |
0fe7935b DJ |
11186 | /* A variable with DW_AT_external is never static, but it |
11187 | may be block-scoped. */ | |
11188 | list_to_add = (cu->list_in_scope == &file_symbols | |
11189 | ? &global_symbols : cu->list_in_scope); | |
11190 | ||
c906108c | 11191 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
c906108c | 11192 | } |
442ddf59 JK |
11193 | else if (!die_is_declaration (die, cu)) |
11194 | { | |
11195 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
11196 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
11197 | if (!suppress_add) |
11198 | list_to_add = cu->list_in_scope; | |
442ddf59 | 11199 | } |
c906108c SS |
11200 | } |
11201 | break; | |
11202 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
11203 | /* If we are inside a function, mark this as an argument. If |
11204 | not, we might be looking at an argument to an inlined function | |
11205 | when we do not have enough information to show inlined frames; | |
11206 | pretend it's a local variable in that case so that the user can | |
11207 | still see it. */ | |
11208 | if (context_stack_depth > 0 | |
11209 | && context_stack[context_stack_depth - 1].name != NULL) | |
11210 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 11211 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
11212 | if (attr) |
11213 | { | |
e7c27a73 | 11214 | var_decode_location (attr, sym, cu); |
c906108c | 11215 | } |
e142c38c | 11216 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
11217 | if (attr) |
11218 | { | |
e7c27a73 | 11219 | dwarf2_const_value (attr, sym, cu); |
c906108c | 11220 | } |
f346a30d PM |
11221 | attr = dwarf2_attr (die, DW_AT_variable_parameter, cu); |
11222 | if (attr && DW_UNSND (attr)) | |
11223 | { | |
11224 | struct type *ref_type; | |
11225 | ||
11226 | ref_type = lookup_reference_type (SYMBOL_TYPE (sym)); | |
11227 | SYMBOL_TYPE (sym) = ref_type; | |
11228 | } | |
11229 | ||
e37fd15a | 11230 | list_to_add = cu->list_in_scope; |
c906108c SS |
11231 | break; |
11232 | case DW_TAG_unspecified_parameters: | |
11233 | /* From varargs functions; gdb doesn't seem to have any | |
11234 | interest in this information, so just ignore it for now. | |
11235 | (FIXME?) */ | |
11236 | break; | |
34eaf542 TT |
11237 | case DW_TAG_template_type_param: |
11238 | suppress_add = 1; | |
11239 | /* Fall through. */ | |
c906108c | 11240 | case DW_TAG_class_type: |
680b30c7 | 11241 | case DW_TAG_interface_type: |
c906108c SS |
11242 | case DW_TAG_structure_type: |
11243 | case DW_TAG_union_type: | |
72019c9c | 11244 | case DW_TAG_set_type: |
c906108c SS |
11245 | case DW_TAG_enumeration_type: |
11246 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 11247 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 11248 | |
63d06c5c | 11249 | { |
987504bb | 11250 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
11251 | really ever be static objects: otherwise, if you try |
11252 | to, say, break of a class's method and you're in a file | |
11253 | which doesn't mention that class, it won't work unless | |
11254 | the check for all static symbols in lookup_symbol_aux | |
11255 | saves you. See the OtherFileClass tests in | |
11256 | gdb.c++/namespace.exp. */ | |
11257 | ||
e37fd15a | 11258 | if (!suppress_add) |
34eaf542 | 11259 | { |
34eaf542 TT |
11260 | list_to_add = (cu->list_in_scope == &file_symbols |
11261 | && (cu->language == language_cplus | |
11262 | || cu->language == language_java) | |
11263 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 11264 | |
64382290 TT |
11265 | /* The semantics of C++ state that "struct foo { |
11266 | ... }" also defines a typedef for "foo". A Java | |
11267 | class declaration also defines a typedef for the | |
11268 | class. */ | |
11269 | if (cu->language == language_cplus | |
11270 | || cu->language == language_java | |
11271 | || cu->language == language_ada) | |
11272 | { | |
11273 | /* The symbol's name is already allocated along | |
11274 | with this objfile, so we don't need to | |
11275 | duplicate it for the type. */ | |
11276 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
11277 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
11278 | } | |
63d06c5c DC |
11279 | } |
11280 | } | |
c906108c SS |
11281 | break; |
11282 | case DW_TAG_typedef: | |
63d06c5c DC |
11283 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
11284 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e37fd15a | 11285 | list_to_add = cu->list_in_scope; |
63d06c5c | 11286 | break; |
c906108c | 11287 | case DW_TAG_base_type: |
a02abb62 | 11288 | case DW_TAG_subrange_type: |
c906108c | 11289 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 11290 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 11291 | list_to_add = cu->list_in_scope; |
c906108c SS |
11292 | break; |
11293 | case DW_TAG_enumerator: | |
e142c38c | 11294 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
11295 | if (attr) |
11296 | { | |
e7c27a73 | 11297 | dwarf2_const_value (attr, sym, cu); |
c906108c | 11298 | } |
63d06c5c DC |
11299 | { |
11300 | /* NOTE: carlton/2003-11-10: See comment above in the | |
11301 | DW_TAG_class_type, etc. block. */ | |
11302 | ||
e142c38c | 11303 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
11304 | && (cu->language == language_cplus |
11305 | || cu->language == language_java) | |
e142c38c | 11306 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 11307 | } |
c906108c | 11308 | break; |
5c4e30ca DC |
11309 | case DW_TAG_namespace: |
11310 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
e37fd15a | 11311 | list_to_add = &global_symbols; |
5c4e30ca | 11312 | break; |
c906108c SS |
11313 | default: |
11314 | /* Not a tag we recognize. Hopefully we aren't processing | |
11315 | trash data, but since we must specifically ignore things | |
11316 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 11317 | this point. */ |
e2e0b3e5 | 11318 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 11319 | dwarf_tag_name (die->tag)); |
c906108c SS |
11320 | break; |
11321 | } | |
df8a16a1 | 11322 | |
e37fd15a SW |
11323 | if (suppress_add) |
11324 | { | |
11325 | sym->hash_next = objfile->template_symbols; | |
11326 | objfile->template_symbols = sym; | |
11327 | list_to_add = NULL; | |
11328 | } | |
11329 | ||
11330 | if (list_to_add != NULL) | |
11331 | add_symbol_to_list (sym, list_to_add); | |
11332 | ||
df8a16a1 DJ |
11333 | /* For the benefit of old versions of GCC, check for anonymous |
11334 | namespaces based on the demangled name. */ | |
11335 | if (!processing_has_namespace_info | |
94af9270 | 11336 | && cu->language == language_cplus) |
df8a16a1 | 11337 | cp_scan_for_anonymous_namespaces (sym); |
c906108c SS |
11338 | } |
11339 | return (sym); | |
11340 | } | |
11341 | ||
34eaf542 TT |
11342 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
11343 | ||
11344 | static struct symbol * | |
11345 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
11346 | { | |
11347 | return new_symbol_full (die, type, cu, NULL); | |
11348 | } | |
11349 | ||
98bfdba5 PA |
11350 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
11351 | zero-extend it as appropriate for the symbol's type. The DWARF | |
11352 | standard (v4) is not entirely clear about the meaning of using | |
11353 | DW_FORM_dataN for a constant with a signed type, where the type is | |
11354 | wider than the data. The conclusion of a discussion on the DWARF | |
11355 | list was that this is unspecified. We choose to always zero-extend | |
11356 | because that is the interpretation long in use by GCC. */ | |
c906108c | 11357 | |
98bfdba5 PA |
11358 | static gdb_byte * |
11359 | dwarf2_const_value_data (struct attribute *attr, struct type *type, | |
11360 | const char *name, struct obstack *obstack, | |
11361 | struct dwarf2_cu *cu, long *value, int bits) | |
c906108c | 11362 | { |
e7c27a73 | 11363 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
11364 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
11365 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
11366 | LONGEST l = DW_UNSND (attr); |
11367 | ||
11368 | if (bits < sizeof (*value) * 8) | |
11369 | { | |
11370 | l &= ((LONGEST) 1 << bits) - 1; | |
11371 | *value = l; | |
11372 | } | |
11373 | else if (bits == sizeof (*value) * 8) | |
11374 | *value = l; | |
11375 | else | |
11376 | { | |
11377 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
11378 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
11379 | return bytes; | |
11380 | } | |
11381 | ||
11382 | return NULL; | |
11383 | } | |
11384 | ||
11385 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
11386 | the value does not fit in *VALUE, set *BYTES - either already | |
11387 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
11388 | or, set *BATON, if we translated the constant to a location | |
11389 | expression. */ | |
11390 | ||
11391 | static void | |
11392 | dwarf2_const_value_attr (struct attribute *attr, struct type *type, | |
11393 | const char *name, struct obstack *obstack, | |
11394 | struct dwarf2_cu *cu, | |
11395 | long *value, gdb_byte **bytes, | |
11396 | struct dwarf2_locexpr_baton **baton) | |
11397 | { | |
11398 | struct objfile *objfile = cu->objfile; | |
11399 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 11400 | struct dwarf_block *blk; |
98bfdba5 PA |
11401 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
11402 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
11403 | ||
11404 | *value = 0; | |
11405 | *bytes = NULL; | |
11406 | *baton = NULL; | |
c906108c SS |
11407 | |
11408 | switch (attr->form) | |
11409 | { | |
11410 | case DW_FORM_addr: | |
ac56253d | 11411 | { |
ac56253d TT |
11412 | gdb_byte *data; |
11413 | ||
98bfdba5 PA |
11414 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
11415 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 11416 | cu_header->addr_size, |
98bfdba5 | 11417 | TYPE_LENGTH (type)); |
ac56253d TT |
11418 | /* Symbols of this form are reasonably rare, so we just |
11419 | piggyback on the existing location code rather than writing | |
11420 | a new implementation of symbol_computed_ops. */ | |
98bfdba5 PA |
11421 | *baton = obstack_alloc (&objfile->objfile_obstack, |
11422 | sizeof (struct dwarf2_locexpr_baton)); | |
11423 | (*baton)->per_cu = cu->per_cu; | |
11424 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 11425 | |
98bfdba5 PA |
11426 | (*baton)->size = 2 + cu_header->addr_size; |
11427 | data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size); | |
11428 | (*baton)->data = data; | |
ac56253d TT |
11429 | |
11430 | data[0] = DW_OP_addr; | |
11431 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
11432 | byte_order, DW_ADDR (attr)); | |
11433 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 11434 | } |
c906108c | 11435 | break; |
4ac36638 | 11436 | case DW_FORM_string: |
93b5768b | 11437 | case DW_FORM_strp: |
98bfdba5 PA |
11438 | /* DW_STRING is already allocated on the objfile obstack, point |
11439 | directly to it. */ | |
11440 | *bytes = (gdb_byte *) DW_STRING (attr); | |
93b5768b | 11441 | break; |
c906108c SS |
11442 | case DW_FORM_block1: |
11443 | case DW_FORM_block2: | |
11444 | case DW_FORM_block4: | |
11445 | case DW_FORM_block: | |
2dc7f7b3 | 11446 | case DW_FORM_exprloc: |
c906108c | 11447 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
11448 | if (TYPE_LENGTH (type) != blk->size) |
11449 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
11450 | TYPE_LENGTH (type)); | |
11451 | *bytes = blk->data; | |
c906108c | 11452 | break; |
2df3850c JM |
11453 | |
11454 | /* The DW_AT_const_value attributes are supposed to carry the | |
11455 | symbol's value "represented as it would be on the target | |
11456 | architecture." By the time we get here, it's already been | |
11457 | converted to host endianness, so we just need to sign- or | |
11458 | zero-extend it as appropriate. */ | |
11459 | case DW_FORM_data1: | |
3e43a32a MS |
11460 | *bytes = dwarf2_const_value_data (attr, type, name, |
11461 | obstack, cu, value, 8); | |
2df3850c | 11462 | break; |
c906108c | 11463 | case DW_FORM_data2: |
3e43a32a MS |
11464 | *bytes = dwarf2_const_value_data (attr, type, name, |
11465 | obstack, cu, value, 16); | |
2df3850c | 11466 | break; |
c906108c | 11467 | case DW_FORM_data4: |
3e43a32a MS |
11468 | *bytes = dwarf2_const_value_data (attr, type, name, |
11469 | obstack, cu, value, 32); | |
2df3850c | 11470 | break; |
c906108c | 11471 | case DW_FORM_data8: |
3e43a32a MS |
11472 | *bytes = dwarf2_const_value_data (attr, type, name, |
11473 | obstack, cu, value, 64); | |
2df3850c JM |
11474 | break; |
11475 | ||
c906108c | 11476 | case DW_FORM_sdata: |
98bfdba5 | 11477 | *value = DW_SND (attr); |
2df3850c JM |
11478 | break; |
11479 | ||
c906108c | 11480 | case DW_FORM_udata: |
98bfdba5 | 11481 | *value = DW_UNSND (attr); |
c906108c | 11482 | break; |
2df3850c | 11483 | |
c906108c | 11484 | default: |
4d3c2250 | 11485 | complaint (&symfile_complaints, |
e2e0b3e5 | 11486 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 11487 | dwarf_form_name (attr->form)); |
98bfdba5 | 11488 | *value = 0; |
c906108c SS |
11489 | break; |
11490 | } | |
11491 | } | |
11492 | ||
2df3850c | 11493 | |
98bfdba5 PA |
11494 | /* Copy constant value from an attribute to a symbol. */ |
11495 | ||
2df3850c | 11496 | static void |
98bfdba5 PA |
11497 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
11498 | struct dwarf2_cu *cu) | |
2df3850c | 11499 | { |
98bfdba5 PA |
11500 | struct objfile *objfile = cu->objfile; |
11501 | struct comp_unit_head *cu_header = &cu->header; | |
11502 | long value; | |
11503 | gdb_byte *bytes; | |
11504 | struct dwarf2_locexpr_baton *baton; | |
2df3850c | 11505 | |
98bfdba5 PA |
11506 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
11507 | SYMBOL_PRINT_NAME (sym), | |
11508 | &objfile->objfile_obstack, cu, | |
11509 | &value, &bytes, &baton); | |
2df3850c | 11510 | |
98bfdba5 PA |
11511 | if (baton != NULL) |
11512 | { | |
11513 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
11514 | SYMBOL_LOCATION_BATON (sym) = baton; | |
11515 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
11516 | } | |
11517 | else if (bytes != NULL) | |
11518 | { | |
11519 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
11520 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
11521 | } | |
11522 | else | |
11523 | { | |
11524 | SYMBOL_VALUE (sym) = value; | |
11525 | SYMBOL_CLASS (sym) = LOC_CONST; | |
11526 | } | |
2df3850c JM |
11527 | } |
11528 | ||
c906108c SS |
11529 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
11530 | ||
11531 | static struct type * | |
e7c27a73 | 11532 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11533 | { |
c906108c | 11534 | struct attribute *type_attr; |
c906108c | 11535 | |
e142c38c | 11536 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
11537 | if (!type_attr) |
11538 | { | |
11539 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 11540 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 11541 | } |
348e048f | 11542 | |
673bfd45 | 11543 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
11544 | } |
11545 | ||
b4ba55a1 JB |
11546 | /* True iff CU's producer generates GNAT Ada auxiliary information |
11547 | that allows to find parallel types through that information instead | |
11548 | of having to do expensive parallel lookups by type name. */ | |
11549 | ||
11550 | static int | |
11551 | need_gnat_info (struct dwarf2_cu *cu) | |
11552 | { | |
11553 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
11554 | of GNAT produces this auxiliary information, without any indication | |
11555 | that it is produced. Part of enhancing the FSF version of GNAT | |
11556 | to produce that information will be to put in place an indicator | |
11557 | that we can use in order to determine whether the descriptive type | |
11558 | info is available or not. One suggestion that has been made is | |
11559 | to use a new attribute, attached to the CU die. For now, assume | |
11560 | that the descriptive type info is not available. */ | |
11561 | return 0; | |
11562 | } | |
11563 | ||
b4ba55a1 JB |
11564 | /* Return the auxiliary type of the die in question using its |
11565 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
11566 | attribute is not present. */ | |
11567 | ||
11568 | static struct type * | |
11569 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
11570 | { | |
b4ba55a1 | 11571 | struct attribute *type_attr; |
b4ba55a1 JB |
11572 | |
11573 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
11574 | if (!type_attr) | |
11575 | return NULL; | |
11576 | ||
673bfd45 | 11577 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
11578 | } |
11579 | ||
11580 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
11581 | descriptive type accordingly. */ | |
11582 | ||
11583 | static void | |
11584 | set_descriptive_type (struct type *type, struct die_info *die, | |
11585 | struct dwarf2_cu *cu) | |
11586 | { | |
11587 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
11588 | ||
11589 | if (descriptive_type) | |
11590 | { | |
11591 | ALLOCATE_GNAT_AUX_TYPE (type); | |
11592 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
11593 | } | |
11594 | } | |
11595 | ||
c906108c SS |
11596 | /* Return the containing type of the die in question using its |
11597 | DW_AT_containing_type attribute. */ | |
11598 | ||
11599 | static struct type * | |
e7c27a73 | 11600 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11601 | { |
c906108c | 11602 | struct attribute *type_attr; |
c906108c | 11603 | |
e142c38c | 11604 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
11605 | if (!type_attr) |
11606 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
11607 | "[in module %s]"), cu->objfile->name); | |
11608 | ||
673bfd45 | 11609 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
11610 | } |
11611 | ||
673bfd45 DE |
11612 | /* Look up the type of DIE in CU using its type attribute ATTR. |
11613 | If there is no type substitute an error marker. */ | |
11614 | ||
c906108c | 11615 | static struct type * |
673bfd45 DE |
11616 | lookup_die_type (struct die_info *die, struct attribute *attr, |
11617 | struct dwarf2_cu *cu) | |
c906108c | 11618 | { |
f792889a DJ |
11619 | struct type *this_type; |
11620 | ||
673bfd45 DE |
11621 | /* First see if we have it cached. */ |
11622 | ||
11623 | if (is_ref_attr (attr)) | |
11624 | { | |
11625 | unsigned int offset = dwarf2_get_ref_die_offset (attr); | |
11626 | ||
11627 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
11628 | } | |
55f1336d | 11629 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 DE |
11630 | { |
11631 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
11632 | struct dwarf2_cu *sig_cu; | |
11633 | unsigned int offset; | |
11634 | ||
11635 | /* sig_type will be NULL if the signatured type is missing from | |
11636 | the debug info. */ | |
11637 | if (sig_type == NULL) | |
11638 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
11639 | "at 0x%x [in module %s]"), | |
11640 | die->offset, cu->objfile->name); | |
11641 | ||
11642 | gdb_assert (sig_type->per_cu.from_debug_types); | |
11643 | offset = sig_type->offset + sig_type->type_offset; | |
11644 | this_type = get_die_type_at_offset (offset, &sig_type->per_cu); | |
11645 | } | |
11646 | else | |
11647 | { | |
11648 | dump_die_for_error (die); | |
11649 | error (_("Dwarf Error: Bad type attribute %s [in module %s]"), | |
11650 | dwarf_attr_name (attr->name), cu->objfile->name); | |
11651 | } | |
11652 | ||
11653 | /* If not cached we need to read it in. */ | |
11654 | ||
11655 | if (this_type == NULL) | |
11656 | { | |
11657 | struct die_info *type_die; | |
11658 | struct dwarf2_cu *type_cu = cu; | |
11659 | ||
11660 | type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
11661 | /* If the type is cached, we should have found it above. */ | |
11662 | gdb_assert (get_die_type (type_die, type_cu) == NULL); | |
11663 | this_type = read_type_die_1 (type_die, type_cu); | |
11664 | } | |
11665 | ||
11666 | /* If we still don't have a type use an error marker. */ | |
11667 | ||
11668 | if (this_type == NULL) | |
c906108c | 11669 | { |
b00fdb78 TT |
11670 | char *message, *saved; |
11671 | ||
11672 | /* read_type_die already issued a complaint. */ | |
11673 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
11674 | cu->objfile->name, | |
11675 | cu->header.offset, | |
11676 | die->offset); | |
11677 | saved = obstack_copy0 (&cu->objfile->objfile_obstack, | |
11678 | message, strlen (message)); | |
11679 | xfree (message); | |
11680 | ||
11681 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, cu->objfile); | |
c906108c | 11682 | } |
673bfd45 | 11683 | |
f792889a | 11684 | return this_type; |
c906108c SS |
11685 | } |
11686 | ||
673bfd45 DE |
11687 | /* Return the type in DIE, CU. |
11688 | Returns NULL for invalid types. | |
11689 | ||
11690 | This first does a lookup in the appropriate type_hash table, | |
11691 | and only reads the die in if necessary. | |
11692 | ||
11693 | NOTE: This can be called when reading in partial or full symbols. */ | |
11694 | ||
f792889a | 11695 | static struct type * |
e7c27a73 | 11696 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11697 | { |
f792889a DJ |
11698 | struct type *this_type; |
11699 | ||
11700 | this_type = get_die_type (die, cu); | |
11701 | if (this_type) | |
11702 | return this_type; | |
11703 | ||
673bfd45 DE |
11704 | return read_type_die_1 (die, cu); |
11705 | } | |
11706 | ||
11707 | /* Read the type in DIE, CU. | |
11708 | Returns NULL for invalid types. */ | |
11709 | ||
11710 | static struct type * | |
11711 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
11712 | { | |
11713 | struct type *this_type = NULL; | |
11714 | ||
c906108c SS |
11715 | switch (die->tag) |
11716 | { | |
11717 | case DW_TAG_class_type: | |
680b30c7 | 11718 | case DW_TAG_interface_type: |
c906108c SS |
11719 | case DW_TAG_structure_type: |
11720 | case DW_TAG_union_type: | |
f792889a | 11721 | this_type = read_structure_type (die, cu); |
c906108c SS |
11722 | break; |
11723 | case DW_TAG_enumeration_type: | |
f792889a | 11724 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
11725 | break; |
11726 | case DW_TAG_subprogram: | |
11727 | case DW_TAG_subroutine_type: | |
edb3359d | 11728 | case DW_TAG_inlined_subroutine: |
f792889a | 11729 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
11730 | break; |
11731 | case DW_TAG_array_type: | |
f792889a | 11732 | this_type = read_array_type (die, cu); |
c906108c | 11733 | break; |
72019c9c | 11734 | case DW_TAG_set_type: |
f792889a | 11735 | this_type = read_set_type (die, cu); |
72019c9c | 11736 | break; |
c906108c | 11737 | case DW_TAG_pointer_type: |
f792889a | 11738 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
11739 | break; |
11740 | case DW_TAG_ptr_to_member_type: | |
f792889a | 11741 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
11742 | break; |
11743 | case DW_TAG_reference_type: | |
f792889a | 11744 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
11745 | break; |
11746 | case DW_TAG_const_type: | |
f792889a | 11747 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
11748 | break; |
11749 | case DW_TAG_volatile_type: | |
f792889a | 11750 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
11751 | break; |
11752 | case DW_TAG_string_type: | |
f792889a | 11753 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
11754 | break; |
11755 | case DW_TAG_typedef: | |
f792889a | 11756 | this_type = read_typedef (die, cu); |
c906108c | 11757 | break; |
a02abb62 | 11758 | case DW_TAG_subrange_type: |
f792889a | 11759 | this_type = read_subrange_type (die, cu); |
a02abb62 | 11760 | break; |
c906108c | 11761 | case DW_TAG_base_type: |
f792889a | 11762 | this_type = read_base_type (die, cu); |
c906108c | 11763 | break; |
81a17f79 | 11764 | case DW_TAG_unspecified_type: |
f792889a | 11765 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 11766 | break; |
0114d602 DJ |
11767 | case DW_TAG_namespace: |
11768 | this_type = read_namespace_type (die, cu); | |
11769 | break; | |
f55ee35c JK |
11770 | case DW_TAG_module: |
11771 | this_type = read_module_type (die, cu); | |
11772 | break; | |
c906108c | 11773 | default: |
3e43a32a MS |
11774 | complaint (&symfile_complaints, |
11775 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 11776 | dwarf_tag_name (die->tag)); |
c906108c SS |
11777 | break; |
11778 | } | |
63d06c5c | 11779 | |
f792889a | 11780 | return this_type; |
63d06c5c DC |
11781 | } |
11782 | ||
abc72ce4 DE |
11783 | /* See if we can figure out if the class lives in a namespace. We do |
11784 | this by looking for a member function; its demangled name will | |
11785 | contain namespace info, if there is any. | |
11786 | Return the computed name or NULL. | |
11787 | Space for the result is allocated on the objfile's obstack. | |
11788 | This is the full-die version of guess_partial_die_structure_name. | |
11789 | In this case we know DIE has no useful parent. */ | |
11790 | ||
11791 | static char * | |
11792 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
11793 | { | |
11794 | struct die_info *spec_die; | |
11795 | struct dwarf2_cu *spec_cu; | |
11796 | struct die_info *child; | |
11797 | ||
11798 | spec_cu = cu; | |
11799 | spec_die = die_specification (die, &spec_cu); | |
11800 | if (spec_die != NULL) | |
11801 | { | |
11802 | die = spec_die; | |
11803 | cu = spec_cu; | |
11804 | } | |
11805 | ||
11806 | for (child = die->child; | |
11807 | child != NULL; | |
11808 | child = child->sibling) | |
11809 | { | |
11810 | if (child->tag == DW_TAG_subprogram) | |
11811 | { | |
11812 | struct attribute *attr; | |
11813 | ||
11814 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
11815 | if (attr == NULL) | |
11816 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
11817 | if (attr != NULL) | |
11818 | { | |
11819 | char *actual_name | |
11820 | = language_class_name_from_physname (cu->language_defn, | |
11821 | DW_STRING (attr)); | |
11822 | char *name = NULL; | |
11823 | ||
11824 | if (actual_name != NULL) | |
11825 | { | |
11826 | char *die_name = dwarf2_name (die, cu); | |
11827 | ||
11828 | if (die_name != NULL | |
11829 | && strcmp (die_name, actual_name) != 0) | |
11830 | { | |
11831 | /* Strip off the class name from the full name. | |
11832 | We want the prefix. */ | |
11833 | int die_name_len = strlen (die_name); | |
11834 | int actual_name_len = strlen (actual_name); | |
11835 | ||
11836 | /* Test for '::' as a sanity check. */ | |
11837 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
11838 | && actual_name[actual_name_len |
11839 | - die_name_len - 1] == ':') | |
abc72ce4 DE |
11840 | name = |
11841 | obsavestring (actual_name, | |
11842 | actual_name_len - die_name_len - 2, | |
11843 | &cu->objfile->objfile_obstack); | |
11844 | } | |
11845 | } | |
11846 | xfree (actual_name); | |
11847 | return name; | |
11848 | } | |
11849 | } | |
11850 | } | |
11851 | ||
11852 | return NULL; | |
11853 | } | |
11854 | ||
fdde2d81 | 11855 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 11856 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 11857 | |
0114d602 DJ |
11858 | For example, if we're within the method foo() in the following |
11859 | code: | |
11860 | ||
11861 | namespace N { | |
11862 | class C { | |
11863 | void foo () { | |
11864 | } | |
11865 | }; | |
11866 | } | |
11867 | ||
11868 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 DC |
11869 | |
11870 | static char * | |
e142c38c | 11871 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 11872 | { |
0114d602 DJ |
11873 | struct die_info *parent, *spec_die; |
11874 | struct dwarf2_cu *spec_cu; | |
11875 | struct type *parent_type; | |
63d06c5c | 11876 | |
f55ee35c JK |
11877 | if (cu->language != language_cplus && cu->language != language_java |
11878 | && cu->language != language_fortran) | |
0114d602 DJ |
11879 | return ""; |
11880 | ||
11881 | /* We have to be careful in the presence of DW_AT_specification. | |
11882 | For example, with GCC 3.4, given the code | |
11883 | ||
11884 | namespace N { | |
11885 | void foo() { | |
11886 | // Definition of N::foo. | |
11887 | } | |
11888 | } | |
11889 | ||
11890 | then we'll have a tree of DIEs like this: | |
11891 | ||
11892 | 1: DW_TAG_compile_unit | |
11893 | 2: DW_TAG_namespace // N | |
11894 | 3: DW_TAG_subprogram // declaration of N::foo | |
11895 | 4: DW_TAG_subprogram // definition of N::foo | |
11896 | DW_AT_specification // refers to die #3 | |
11897 | ||
11898 | Thus, when processing die #4, we have to pretend that we're in | |
11899 | the context of its DW_AT_specification, namely the contex of die | |
11900 | #3. */ | |
11901 | spec_cu = cu; | |
11902 | spec_die = die_specification (die, &spec_cu); | |
11903 | if (spec_die == NULL) | |
11904 | parent = die->parent; | |
11905 | else | |
63d06c5c | 11906 | { |
0114d602 DJ |
11907 | parent = spec_die->parent; |
11908 | cu = spec_cu; | |
63d06c5c | 11909 | } |
0114d602 DJ |
11910 | |
11911 | if (parent == NULL) | |
11912 | return ""; | |
98bfdba5 PA |
11913 | else if (parent->building_fullname) |
11914 | { | |
11915 | const char *name; | |
11916 | const char *parent_name; | |
11917 | ||
11918 | /* It has been seen on RealView 2.2 built binaries, | |
11919 | DW_TAG_template_type_param types actually _defined_ as | |
11920 | children of the parent class: | |
11921 | ||
11922 | enum E {}; | |
11923 | template class <class Enum> Class{}; | |
11924 | Class<enum E> class_e; | |
11925 | ||
11926 | 1: DW_TAG_class_type (Class) | |
11927 | 2: DW_TAG_enumeration_type (E) | |
11928 | 3: DW_TAG_enumerator (enum1:0) | |
11929 | 3: DW_TAG_enumerator (enum2:1) | |
11930 | ... | |
11931 | 2: DW_TAG_template_type_param | |
11932 | DW_AT_type DW_FORM_ref_udata (E) | |
11933 | ||
11934 | Besides being broken debug info, it can put GDB into an | |
11935 | infinite loop. Consider: | |
11936 | ||
11937 | When we're building the full name for Class<E>, we'll start | |
11938 | at Class, and go look over its template type parameters, | |
11939 | finding E. We'll then try to build the full name of E, and | |
11940 | reach here. We're now trying to build the full name of E, | |
11941 | and look over the parent DIE for containing scope. In the | |
11942 | broken case, if we followed the parent DIE of E, we'd again | |
11943 | find Class, and once again go look at its template type | |
11944 | arguments, etc., etc. Simply don't consider such parent die | |
11945 | as source-level parent of this die (it can't be, the language | |
11946 | doesn't allow it), and break the loop here. */ | |
11947 | name = dwarf2_name (die, cu); | |
11948 | parent_name = dwarf2_name (parent, cu); | |
11949 | complaint (&symfile_complaints, | |
11950 | _("template param type '%s' defined within parent '%s'"), | |
11951 | name ? name : "<unknown>", | |
11952 | parent_name ? parent_name : "<unknown>"); | |
11953 | return ""; | |
11954 | } | |
63d06c5c | 11955 | else |
0114d602 DJ |
11956 | switch (parent->tag) |
11957 | { | |
63d06c5c | 11958 | case DW_TAG_namespace: |
0114d602 | 11959 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
11960 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
11961 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
11962 | Work around this problem here. */ | |
11963 | if (cu->language == language_cplus | |
11964 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
11965 | return ""; | |
0114d602 DJ |
11966 | /* We give a name to even anonymous namespaces. */ |
11967 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 11968 | case DW_TAG_class_type: |
680b30c7 | 11969 | case DW_TAG_interface_type: |
63d06c5c | 11970 | case DW_TAG_structure_type: |
0114d602 | 11971 | case DW_TAG_union_type: |
f55ee35c | 11972 | case DW_TAG_module: |
0114d602 DJ |
11973 | parent_type = read_type_die (parent, cu); |
11974 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
11975 | return TYPE_TAG_NAME (parent_type); | |
11976 | else | |
11977 | /* An anonymous structure is only allowed non-static data | |
11978 | members; no typedefs, no member functions, et cetera. | |
11979 | So it does not need a prefix. */ | |
11980 | return ""; | |
abc72ce4 DE |
11981 | case DW_TAG_compile_unit: |
11982 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ | |
11983 | if (cu->language == language_cplus | |
11984 | && dwarf2_per_objfile->types.asection != NULL | |
11985 | && die->child != NULL | |
11986 | && (die->tag == DW_TAG_class_type | |
11987 | || die->tag == DW_TAG_structure_type | |
11988 | || die->tag == DW_TAG_union_type)) | |
11989 | { | |
11990 | char *name = guess_full_die_structure_name (die, cu); | |
11991 | if (name != NULL) | |
11992 | return name; | |
11993 | } | |
11994 | return ""; | |
63d06c5c | 11995 | default: |
8176b9b8 | 11996 | return determine_prefix (parent, cu); |
63d06c5c | 11997 | } |
63d06c5c DC |
11998 | } |
11999 | ||
3e43a32a MS |
12000 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
12001 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
12002 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
12003 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
12004 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 12005 | |
f55ee35c | 12006 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
12007 | |
12008 | static char * | |
f55ee35c JK |
12009 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
12010 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 12011 | { |
f55ee35c | 12012 | const char *lead = ""; |
5c315b68 | 12013 | const char *sep; |
63d06c5c | 12014 | |
3e43a32a MS |
12015 | if (suffix == NULL || suffix[0] == '\0' |
12016 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
12017 | sep = ""; |
12018 | else if (cu->language == language_java) | |
12019 | sep = "."; | |
f55ee35c JK |
12020 | else if (cu->language == language_fortran && physname) |
12021 | { | |
12022 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
12023 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
12024 | ||
12025 | lead = "__"; | |
12026 | sep = "_MOD_"; | |
12027 | } | |
987504bb JJ |
12028 | else |
12029 | sep = "::"; | |
63d06c5c | 12030 | |
6dd47d34 DE |
12031 | if (prefix == NULL) |
12032 | prefix = ""; | |
12033 | if (suffix == NULL) | |
12034 | suffix = ""; | |
12035 | ||
987504bb JJ |
12036 | if (obs == NULL) |
12037 | { | |
3e43a32a MS |
12038 | char *retval |
12039 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 12040 | |
f55ee35c JK |
12041 | strcpy (retval, lead); |
12042 | strcat (retval, prefix); | |
6dd47d34 DE |
12043 | strcat (retval, sep); |
12044 | strcat (retval, suffix); | |
63d06c5c DC |
12045 | return retval; |
12046 | } | |
987504bb JJ |
12047 | else |
12048 | { | |
12049 | /* We have an obstack. */ | |
f55ee35c | 12050 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 12051 | } |
63d06c5c DC |
12052 | } |
12053 | ||
c906108c SS |
12054 | /* Return sibling of die, NULL if no sibling. */ |
12055 | ||
f9aca02d | 12056 | static struct die_info * |
fba45db2 | 12057 | sibling_die (struct die_info *die) |
c906108c | 12058 | { |
639d11d3 | 12059 | return die->sibling; |
c906108c SS |
12060 | } |
12061 | ||
71c25dea TT |
12062 | /* Get name of a die, return NULL if not found. */ |
12063 | ||
12064 | static char * | |
12065 | dwarf2_canonicalize_name (char *name, struct dwarf2_cu *cu, | |
12066 | struct obstack *obstack) | |
12067 | { | |
12068 | if (name && cu->language == language_cplus) | |
12069 | { | |
12070 | char *canon_name = cp_canonicalize_string (name); | |
12071 | ||
12072 | if (canon_name != NULL) | |
12073 | { | |
12074 | if (strcmp (canon_name, name) != 0) | |
12075 | name = obsavestring (canon_name, strlen (canon_name), | |
12076 | obstack); | |
12077 | xfree (canon_name); | |
12078 | } | |
12079 | } | |
12080 | ||
12081 | return name; | |
c906108c SS |
12082 | } |
12083 | ||
9219021c DC |
12084 | /* Get name of a die, return NULL if not found. */ |
12085 | ||
12086 | static char * | |
e142c38c | 12087 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
12088 | { |
12089 | struct attribute *attr; | |
12090 | ||
e142c38c | 12091 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
12092 | if ((!attr || !DW_STRING (attr)) |
12093 | && die->tag != DW_TAG_class_type | |
12094 | && die->tag != DW_TAG_interface_type | |
12095 | && die->tag != DW_TAG_structure_type | |
12096 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
12097 | return NULL; |
12098 | ||
12099 | switch (die->tag) | |
12100 | { | |
12101 | case DW_TAG_compile_unit: | |
12102 | /* Compilation units have a DW_AT_name that is a filename, not | |
12103 | a source language identifier. */ | |
12104 | case DW_TAG_enumeration_type: | |
12105 | case DW_TAG_enumerator: | |
12106 | /* These tags always have simple identifiers already; no need | |
12107 | to canonicalize them. */ | |
12108 | return DW_STRING (attr); | |
907af001 | 12109 | |
418835cc KS |
12110 | case DW_TAG_subprogram: |
12111 | /* Java constructors will all be named "<init>", so return | |
12112 | the class name when we see this special case. */ | |
12113 | if (cu->language == language_java | |
12114 | && DW_STRING (attr) != NULL | |
12115 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
12116 | { | |
12117 | struct dwarf2_cu *spec_cu = cu; | |
12118 | struct die_info *spec_die; | |
12119 | ||
12120 | /* GCJ will output '<init>' for Java constructor names. | |
12121 | For this special case, return the name of the parent class. */ | |
12122 | ||
12123 | /* GCJ may output suprogram DIEs with AT_specification set. | |
12124 | If so, use the name of the specified DIE. */ | |
12125 | spec_die = die_specification (die, &spec_cu); | |
12126 | if (spec_die != NULL) | |
12127 | return dwarf2_name (spec_die, spec_cu); | |
12128 | ||
12129 | do | |
12130 | { | |
12131 | die = die->parent; | |
12132 | if (die->tag == DW_TAG_class_type) | |
12133 | return dwarf2_name (die, cu); | |
12134 | } | |
12135 | while (die->tag != DW_TAG_compile_unit); | |
12136 | } | |
907af001 UW |
12137 | break; |
12138 | ||
12139 | case DW_TAG_class_type: | |
12140 | case DW_TAG_interface_type: | |
12141 | case DW_TAG_structure_type: | |
12142 | case DW_TAG_union_type: | |
12143 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
12144 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
12145 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
12146 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
12147 | if (attr && DW_STRING (attr) |
12148 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
12149 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 12150 | return NULL; |
53832f31 TT |
12151 | |
12152 | /* GCC might emit a nameless typedef that has a linkage name. See | |
12153 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
12154 | if (!attr || DW_STRING (attr) == NULL) | |
12155 | { | |
df5c6c50 | 12156 | char *demangled = NULL; |
53832f31 TT |
12157 | |
12158 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
12159 | if (attr == NULL) | |
12160 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
12161 | ||
12162 | if (attr == NULL || DW_STRING (attr) == NULL) | |
12163 | return NULL; | |
12164 | ||
df5c6c50 JK |
12165 | /* Avoid demangling DW_STRING (attr) the second time on a second |
12166 | call for the same DIE. */ | |
12167 | if (!DW_STRING_IS_CANONICAL (attr)) | |
12168 | demangled = cplus_demangle (DW_STRING (attr), DMGL_TYPES); | |
53832f31 TT |
12169 | |
12170 | if (demangled) | |
12171 | { | |
12172 | /* FIXME: we already did this for the partial symbol... */ | |
12173 | DW_STRING (attr) | |
12174 | = obsavestring (demangled, strlen (demangled), | |
12175 | &cu->objfile->objfile_obstack); | |
12176 | DW_STRING_IS_CANONICAL (attr) = 1; | |
12177 | xfree (demangled); | |
12178 | } | |
12179 | } | |
907af001 UW |
12180 | break; |
12181 | ||
71c25dea | 12182 | default: |
907af001 UW |
12183 | break; |
12184 | } | |
12185 | ||
12186 | if (!DW_STRING_IS_CANONICAL (attr)) | |
12187 | { | |
12188 | DW_STRING (attr) | |
12189 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
12190 | &cu->objfile->objfile_obstack); | |
12191 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 12192 | } |
907af001 | 12193 | return DW_STRING (attr); |
9219021c DC |
12194 | } |
12195 | ||
12196 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
12197 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
12198 | containing the return value on output. */ | |
9219021c DC |
12199 | |
12200 | static struct die_info * | |
f2f0e013 | 12201 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
12202 | { |
12203 | struct attribute *attr; | |
9219021c | 12204 | |
f2f0e013 | 12205 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
12206 | if (attr == NULL) |
12207 | return NULL; | |
12208 | ||
f2f0e013 | 12209 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
12210 | } |
12211 | ||
c906108c SS |
12212 | /* Convert a DIE tag into its string name. */ |
12213 | ||
12214 | static char * | |
aa1ee363 | 12215 | dwarf_tag_name (unsigned tag) |
c906108c SS |
12216 | { |
12217 | switch (tag) | |
12218 | { | |
12219 | case DW_TAG_padding: | |
12220 | return "DW_TAG_padding"; | |
12221 | case DW_TAG_array_type: | |
12222 | return "DW_TAG_array_type"; | |
12223 | case DW_TAG_class_type: | |
12224 | return "DW_TAG_class_type"; | |
12225 | case DW_TAG_entry_point: | |
12226 | return "DW_TAG_entry_point"; | |
12227 | case DW_TAG_enumeration_type: | |
12228 | return "DW_TAG_enumeration_type"; | |
12229 | case DW_TAG_formal_parameter: | |
12230 | return "DW_TAG_formal_parameter"; | |
12231 | case DW_TAG_imported_declaration: | |
12232 | return "DW_TAG_imported_declaration"; | |
12233 | case DW_TAG_label: | |
12234 | return "DW_TAG_label"; | |
12235 | case DW_TAG_lexical_block: | |
12236 | return "DW_TAG_lexical_block"; | |
12237 | case DW_TAG_member: | |
12238 | return "DW_TAG_member"; | |
12239 | case DW_TAG_pointer_type: | |
12240 | return "DW_TAG_pointer_type"; | |
12241 | case DW_TAG_reference_type: | |
12242 | return "DW_TAG_reference_type"; | |
12243 | case DW_TAG_compile_unit: | |
12244 | return "DW_TAG_compile_unit"; | |
12245 | case DW_TAG_string_type: | |
12246 | return "DW_TAG_string_type"; | |
12247 | case DW_TAG_structure_type: | |
12248 | return "DW_TAG_structure_type"; | |
12249 | case DW_TAG_subroutine_type: | |
12250 | return "DW_TAG_subroutine_type"; | |
12251 | case DW_TAG_typedef: | |
12252 | return "DW_TAG_typedef"; | |
12253 | case DW_TAG_union_type: | |
12254 | return "DW_TAG_union_type"; | |
12255 | case DW_TAG_unspecified_parameters: | |
12256 | return "DW_TAG_unspecified_parameters"; | |
12257 | case DW_TAG_variant: | |
12258 | return "DW_TAG_variant"; | |
12259 | case DW_TAG_common_block: | |
12260 | return "DW_TAG_common_block"; | |
12261 | case DW_TAG_common_inclusion: | |
12262 | return "DW_TAG_common_inclusion"; | |
12263 | case DW_TAG_inheritance: | |
12264 | return "DW_TAG_inheritance"; | |
12265 | case DW_TAG_inlined_subroutine: | |
12266 | return "DW_TAG_inlined_subroutine"; | |
12267 | case DW_TAG_module: | |
12268 | return "DW_TAG_module"; | |
12269 | case DW_TAG_ptr_to_member_type: | |
12270 | return "DW_TAG_ptr_to_member_type"; | |
12271 | case DW_TAG_set_type: | |
12272 | return "DW_TAG_set_type"; | |
12273 | case DW_TAG_subrange_type: | |
12274 | return "DW_TAG_subrange_type"; | |
12275 | case DW_TAG_with_stmt: | |
12276 | return "DW_TAG_with_stmt"; | |
12277 | case DW_TAG_access_declaration: | |
12278 | return "DW_TAG_access_declaration"; | |
12279 | case DW_TAG_base_type: | |
12280 | return "DW_TAG_base_type"; | |
12281 | case DW_TAG_catch_block: | |
12282 | return "DW_TAG_catch_block"; | |
12283 | case DW_TAG_const_type: | |
12284 | return "DW_TAG_const_type"; | |
12285 | case DW_TAG_constant: | |
12286 | return "DW_TAG_constant"; | |
12287 | case DW_TAG_enumerator: | |
12288 | return "DW_TAG_enumerator"; | |
12289 | case DW_TAG_file_type: | |
12290 | return "DW_TAG_file_type"; | |
12291 | case DW_TAG_friend: | |
12292 | return "DW_TAG_friend"; | |
12293 | case DW_TAG_namelist: | |
12294 | return "DW_TAG_namelist"; | |
12295 | case DW_TAG_namelist_item: | |
12296 | return "DW_TAG_namelist_item"; | |
12297 | case DW_TAG_packed_type: | |
12298 | return "DW_TAG_packed_type"; | |
12299 | case DW_TAG_subprogram: | |
12300 | return "DW_TAG_subprogram"; | |
12301 | case DW_TAG_template_type_param: | |
12302 | return "DW_TAG_template_type_param"; | |
12303 | case DW_TAG_template_value_param: | |
12304 | return "DW_TAG_template_value_param"; | |
12305 | case DW_TAG_thrown_type: | |
12306 | return "DW_TAG_thrown_type"; | |
12307 | case DW_TAG_try_block: | |
12308 | return "DW_TAG_try_block"; | |
12309 | case DW_TAG_variant_part: | |
12310 | return "DW_TAG_variant_part"; | |
12311 | case DW_TAG_variable: | |
12312 | return "DW_TAG_variable"; | |
12313 | case DW_TAG_volatile_type: | |
12314 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
12315 | case DW_TAG_dwarf_procedure: |
12316 | return "DW_TAG_dwarf_procedure"; | |
12317 | case DW_TAG_restrict_type: | |
12318 | return "DW_TAG_restrict_type"; | |
12319 | case DW_TAG_interface_type: | |
12320 | return "DW_TAG_interface_type"; | |
12321 | case DW_TAG_namespace: | |
12322 | return "DW_TAG_namespace"; | |
12323 | case DW_TAG_imported_module: | |
12324 | return "DW_TAG_imported_module"; | |
12325 | case DW_TAG_unspecified_type: | |
12326 | return "DW_TAG_unspecified_type"; | |
12327 | case DW_TAG_partial_unit: | |
12328 | return "DW_TAG_partial_unit"; | |
12329 | case DW_TAG_imported_unit: | |
12330 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
12331 | case DW_TAG_condition: |
12332 | return "DW_TAG_condition"; | |
12333 | case DW_TAG_shared_type: | |
12334 | return "DW_TAG_shared_type"; | |
348e048f DE |
12335 | case DW_TAG_type_unit: |
12336 | return "DW_TAG_type_unit"; | |
c906108c SS |
12337 | case DW_TAG_MIPS_loop: |
12338 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
12339 | case DW_TAG_HP_array_descriptor: |
12340 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
12341 | case DW_TAG_format_label: |
12342 | return "DW_TAG_format_label"; | |
12343 | case DW_TAG_function_template: | |
12344 | return "DW_TAG_function_template"; | |
12345 | case DW_TAG_class_template: | |
12346 | return "DW_TAG_class_template"; | |
b7619582 GF |
12347 | case DW_TAG_GNU_BINCL: |
12348 | return "DW_TAG_GNU_BINCL"; | |
12349 | case DW_TAG_GNU_EINCL: | |
12350 | return "DW_TAG_GNU_EINCL"; | |
12351 | case DW_TAG_upc_shared_type: | |
12352 | return "DW_TAG_upc_shared_type"; | |
12353 | case DW_TAG_upc_strict_type: | |
12354 | return "DW_TAG_upc_strict_type"; | |
12355 | case DW_TAG_upc_relaxed_type: | |
12356 | return "DW_TAG_upc_relaxed_type"; | |
12357 | case DW_TAG_PGI_kanji_type: | |
12358 | return "DW_TAG_PGI_kanji_type"; | |
12359 | case DW_TAG_PGI_interface_block: | |
12360 | return "DW_TAG_PGI_interface_block"; | |
c906108c SS |
12361 | default: |
12362 | return "DW_TAG_<unknown>"; | |
12363 | } | |
12364 | } | |
12365 | ||
12366 | /* Convert a DWARF attribute code into its string name. */ | |
12367 | ||
12368 | static char * | |
aa1ee363 | 12369 | dwarf_attr_name (unsigned attr) |
c906108c SS |
12370 | { |
12371 | switch (attr) | |
12372 | { | |
12373 | case DW_AT_sibling: | |
12374 | return "DW_AT_sibling"; | |
12375 | case DW_AT_location: | |
12376 | return "DW_AT_location"; | |
12377 | case DW_AT_name: | |
12378 | return "DW_AT_name"; | |
12379 | case DW_AT_ordering: | |
12380 | return "DW_AT_ordering"; | |
12381 | case DW_AT_subscr_data: | |
12382 | return "DW_AT_subscr_data"; | |
12383 | case DW_AT_byte_size: | |
12384 | return "DW_AT_byte_size"; | |
12385 | case DW_AT_bit_offset: | |
12386 | return "DW_AT_bit_offset"; | |
12387 | case DW_AT_bit_size: | |
12388 | return "DW_AT_bit_size"; | |
12389 | case DW_AT_element_list: | |
12390 | return "DW_AT_element_list"; | |
12391 | case DW_AT_stmt_list: | |
12392 | return "DW_AT_stmt_list"; | |
12393 | case DW_AT_low_pc: | |
12394 | return "DW_AT_low_pc"; | |
12395 | case DW_AT_high_pc: | |
12396 | return "DW_AT_high_pc"; | |
12397 | case DW_AT_language: | |
12398 | return "DW_AT_language"; | |
12399 | case DW_AT_member: | |
12400 | return "DW_AT_member"; | |
12401 | case DW_AT_discr: | |
12402 | return "DW_AT_discr"; | |
12403 | case DW_AT_discr_value: | |
12404 | return "DW_AT_discr_value"; | |
12405 | case DW_AT_visibility: | |
12406 | return "DW_AT_visibility"; | |
12407 | case DW_AT_import: | |
12408 | return "DW_AT_import"; | |
12409 | case DW_AT_string_length: | |
12410 | return "DW_AT_string_length"; | |
12411 | case DW_AT_common_reference: | |
12412 | return "DW_AT_common_reference"; | |
12413 | case DW_AT_comp_dir: | |
12414 | return "DW_AT_comp_dir"; | |
12415 | case DW_AT_const_value: | |
12416 | return "DW_AT_const_value"; | |
12417 | case DW_AT_containing_type: | |
12418 | return "DW_AT_containing_type"; | |
12419 | case DW_AT_default_value: | |
12420 | return "DW_AT_default_value"; | |
12421 | case DW_AT_inline: | |
12422 | return "DW_AT_inline"; | |
12423 | case DW_AT_is_optional: | |
12424 | return "DW_AT_is_optional"; | |
12425 | case DW_AT_lower_bound: | |
12426 | return "DW_AT_lower_bound"; | |
12427 | case DW_AT_producer: | |
12428 | return "DW_AT_producer"; | |
12429 | case DW_AT_prototyped: | |
12430 | return "DW_AT_prototyped"; | |
12431 | case DW_AT_return_addr: | |
12432 | return "DW_AT_return_addr"; | |
12433 | case DW_AT_start_scope: | |
12434 | return "DW_AT_start_scope"; | |
09fa0d7c JK |
12435 | case DW_AT_bit_stride: |
12436 | return "DW_AT_bit_stride"; | |
c906108c SS |
12437 | case DW_AT_upper_bound: |
12438 | return "DW_AT_upper_bound"; | |
12439 | case DW_AT_abstract_origin: | |
12440 | return "DW_AT_abstract_origin"; | |
12441 | case DW_AT_accessibility: | |
12442 | return "DW_AT_accessibility"; | |
12443 | case DW_AT_address_class: | |
12444 | return "DW_AT_address_class"; | |
12445 | case DW_AT_artificial: | |
12446 | return "DW_AT_artificial"; | |
12447 | case DW_AT_base_types: | |
12448 | return "DW_AT_base_types"; | |
12449 | case DW_AT_calling_convention: | |
12450 | return "DW_AT_calling_convention"; | |
12451 | case DW_AT_count: | |
12452 | return "DW_AT_count"; | |
12453 | case DW_AT_data_member_location: | |
12454 | return "DW_AT_data_member_location"; | |
12455 | case DW_AT_decl_column: | |
12456 | return "DW_AT_decl_column"; | |
12457 | case DW_AT_decl_file: | |
12458 | return "DW_AT_decl_file"; | |
12459 | case DW_AT_decl_line: | |
12460 | return "DW_AT_decl_line"; | |
12461 | case DW_AT_declaration: | |
12462 | return "DW_AT_declaration"; | |
12463 | case DW_AT_discr_list: | |
12464 | return "DW_AT_discr_list"; | |
12465 | case DW_AT_encoding: | |
12466 | return "DW_AT_encoding"; | |
12467 | case DW_AT_external: | |
12468 | return "DW_AT_external"; | |
12469 | case DW_AT_frame_base: | |
12470 | return "DW_AT_frame_base"; | |
12471 | case DW_AT_friend: | |
12472 | return "DW_AT_friend"; | |
12473 | case DW_AT_identifier_case: | |
12474 | return "DW_AT_identifier_case"; | |
12475 | case DW_AT_macro_info: | |
12476 | return "DW_AT_macro_info"; | |
12477 | case DW_AT_namelist_items: | |
12478 | return "DW_AT_namelist_items"; | |
12479 | case DW_AT_priority: | |
12480 | return "DW_AT_priority"; | |
12481 | case DW_AT_segment: | |
12482 | return "DW_AT_segment"; | |
12483 | case DW_AT_specification: | |
12484 | return "DW_AT_specification"; | |
12485 | case DW_AT_static_link: | |
12486 | return "DW_AT_static_link"; | |
12487 | case DW_AT_type: | |
12488 | return "DW_AT_type"; | |
12489 | case DW_AT_use_location: | |
12490 | return "DW_AT_use_location"; | |
12491 | case DW_AT_variable_parameter: | |
12492 | return "DW_AT_variable_parameter"; | |
12493 | case DW_AT_virtuality: | |
12494 | return "DW_AT_virtuality"; | |
12495 | case DW_AT_vtable_elem_location: | |
12496 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 12497 | /* DWARF 3 values. */ |
d9fa45fe DC |
12498 | case DW_AT_allocated: |
12499 | return "DW_AT_allocated"; | |
12500 | case DW_AT_associated: | |
12501 | return "DW_AT_associated"; | |
12502 | case DW_AT_data_location: | |
12503 | return "DW_AT_data_location"; | |
09fa0d7c JK |
12504 | case DW_AT_byte_stride: |
12505 | return "DW_AT_byte_stride"; | |
d9fa45fe DC |
12506 | case DW_AT_entry_pc: |
12507 | return "DW_AT_entry_pc"; | |
12508 | case DW_AT_use_UTF8: | |
12509 | return "DW_AT_use_UTF8"; | |
12510 | case DW_AT_extension: | |
12511 | return "DW_AT_extension"; | |
12512 | case DW_AT_ranges: | |
12513 | return "DW_AT_ranges"; | |
12514 | case DW_AT_trampoline: | |
12515 | return "DW_AT_trampoline"; | |
12516 | case DW_AT_call_column: | |
12517 | return "DW_AT_call_column"; | |
12518 | case DW_AT_call_file: | |
12519 | return "DW_AT_call_file"; | |
12520 | case DW_AT_call_line: | |
12521 | return "DW_AT_call_line"; | |
b7619582 GF |
12522 | case DW_AT_description: |
12523 | return "DW_AT_description"; | |
12524 | case DW_AT_binary_scale: | |
12525 | return "DW_AT_binary_scale"; | |
12526 | case DW_AT_decimal_scale: | |
12527 | return "DW_AT_decimal_scale"; | |
12528 | case DW_AT_small: | |
12529 | return "DW_AT_small"; | |
12530 | case DW_AT_decimal_sign: | |
12531 | return "DW_AT_decimal_sign"; | |
12532 | case DW_AT_digit_count: | |
12533 | return "DW_AT_digit_count"; | |
12534 | case DW_AT_picture_string: | |
12535 | return "DW_AT_picture_string"; | |
12536 | case DW_AT_mutable: | |
12537 | return "DW_AT_mutable"; | |
12538 | case DW_AT_threads_scaled: | |
12539 | return "DW_AT_threads_scaled"; | |
12540 | case DW_AT_explicit: | |
12541 | return "DW_AT_explicit"; | |
12542 | case DW_AT_object_pointer: | |
12543 | return "DW_AT_object_pointer"; | |
12544 | case DW_AT_endianity: | |
12545 | return "DW_AT_endianity"; | |
12546 | case DW_AT_elemental: | |
12547 | return "DW_AT_elemental"; | |
12548 | case DW_AT_pure: | |
12549 | return "DW_AT_pure"; | |
12550 | case DW_AT_recursive: | |
12551 | return "DW_AT_recursive"; | |
348e048f DE |
12552 | /* DWARF 4 values. */ |
12553 | case DW_AT_signature: | |
12554 | return "DW_AT_signature"; | |
31ef98ae TT |
12555 | case DW_AT_linkage_name: |
12556 | return "DW_AT_linkage_name"; | |
b7619582 | 12557 | /* SGI/MIPS extensions. */ |
c764a876 | 12558 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
c906108c SS |
12559 | case DW_AT_MIPS_fde: |
12560 | return "DW_AT_MIPS_fde"; | |
c764a876 | 12561 | #endif |
c906108c SS |
12562 | case DW_AT_MIPS_loop_begin: |
12563 | return "DW_AT_MIPS_loop_begin"; | |
12564 | case DW_AT_MIPS_tail_loop_begin: | |
12565 | return "DW_AT_MIPS_tail_loop_begin"; | |
12566 | case DW_AT_MIPS_epilog_begin: | |
12567 | return "DW_AT_MIPS_epilog_begin"; | |
12568 | case DW_AT_MIPS_loop_unroll_factor: | |
12569 | return "DW_AT_MIPS_loop_unroll_factor"; | |
12570 | case DW_AT_MIPS_software_pipeline_depth: | |
12571 | return "DW_AT_MIPS_software_pipeline_depth"; | |
12572 | case DW_AT_MIPS_linkage_name: | |
12573 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
12574 | case DW_AT_MIPS_stride: |
12575 | return "DW_AT_MIPS_stride"; | |
12576 | case DW_AT_MIPS_abstract_name: | |
12577 | return "DW_AT_MIPS_abstract_name"; | |
12578 | case DW_AT_MIPS_clone_origin: | |
12579 | return "DW_AT_MIPS_clone_origin"; | |
12580 | case DW_AT_MIPS_has_inlines: | |
12581 | return "DW_AT_MIPS_has_inlines"; | |
b7619582 | 12582 | /* HP extensions. */ |
c764a876 | 12583 | #ifndef MIPS /* collides with DW_AT_MIPS_fde */ |
b7619582 GF |
12584 | case DW_AT_HP_block_index: |
12585 | return "DW_AT_HP_block_index"; | |
c764a876 | 12586 | #endif |
b7619582 GF |
12587 | case DW_AT_HP_unmodifiable: |
12588 | return "DW_AT_HP_unmodifiable"; | |
12589 | case DW_AT_HP_actuals_stmt_list: | |
12590 | return "DW_AT_HP_actuals_stmt_list"; | |
12591 | case DW_AT_HP_proc_per_section: | |
12592 | return "DW_AT_HP_proc_per_section"; | |
12593 | case DW_AT_HP_raw_data_ptr: | |
12594 | return "DW_AT_HP_raw_data_ptr"; | |
12595 | case DW_AT_HP_pass_by_reference: | |
12596 | return "DW_AT_HP_pass_by_reference"; | |
12597 | case DW_AT_HP_opt_level: | |
12598 | return "DW_AT_HP_opt_level"; | |
12599 | case DW_AT_HP_prof_version_id: | |
12600 | return "DW_AT_HP_prof_version_id"; | |
12601 | case DW_AT_HP_opt_flags: | |
12602 | return "DW_AT_HP_opt_flags"; | |
12603 | case DW_AT_HP_cold_region_low_pc: | |
12604 | return "DW_AT_HP_cold_region_low_pc"; | |
12605 | case DW_AT_HP_cold_region_high_pc: | |
12606 | return "DW_AT_HP_cold_region_high_pc"; | |
12607 | case DW_AT_HP_all_variables_modifiable: | |
12608 | return "DW_AT_HP_all_variables_modifiable"; | |
12609 | case DW_AT_HP_linkage_name: | |
12610 | return "DW_AT_HP_linkage_name"; | |
12611 | case DW_AT_HP_prof_flags: | |
12612 | return "DW_AT_HP_prof_flags"; | |
12613 | /* GNU extensions. */ | |
c906108c SS |
12614 | case DW_AT_sf_names: |
12615 | return "DW_AT_sf_names"; | |
12616 | case DW_AT_src_info: | |
12617 | return "DW_AT_src_info"; | |
12618 | case DW_AT_mac_info: | |
12619 | return "DW_AT_mac_info"; | |
12620 | case DW_AT_src_coords: | |
12621 | return "DW_AT_src_coords"; | |
12622 | case DW_AT_body_begin: | |
12623 | return "DW_AT_body_begin"; | |
12624 | case DW_AT_body_end: | |
12625 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
12626 | case DW_AT_GNU_vector: |
12627 | return "DW_AT_GNU_vector"; | |
2de00c64 DE |
12628 | case DW_AT_GNU_odr_signature: |
12629 | return "DW_AT_GNU_odr_signature"; | |
b7619582 GF |
12630 | /* VMS extensions. */ |
12631 | case DW_AT_VMS_rtnbeg_pd_address: | |
12632 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
12633 | /* UPC extension. */ | |
12634 | case DW_AT_upc_threads_scaled: | |
12635 | return "DW_AT_upc_threads_scaled"; | |
12636 | /* PGI (STMicroelectronics) extensions. */ | |
12637 | case DW_AT_PGI_lbase: | |
12638 | return "DW_AT_PGI_lbase"; | |
12639 | case DW_AT_PGI_soffset: | |
12640 | return "DW_AT_PGI_soffset"; | |
12641 | case DW_AT_PGI_lstride: | |
12642 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
12643 | default: |
12644 | return "DW_AT_<unknown>"; | |
12645 | } | |
12646 | } | |
12647 | ||
12648 | /* Convert a DWARF value form code into its string name. */ | |
12649 | ||
12650 | static char * | |
aa1ee363 | 12651 | dwarf_form_name (unsigned form) |
c906108c SS |
12652 | { |
12653 | switch (form) | |
12654 | { | |
12655 | case DW_FORM_addr: | |
12656 | return "DW_FORM_addr"; | |
12657 | case DW_FORM_block2: | |
12658 | return "DW_FORM_block2"; | |
12659 | case DW_FORM_block4: | |
12660 | return "DW_FORM_block4"; | |
12661 | case DW_FORM_data2: | |
12662 | return "DW_FORM_data2"; | |
12663 | case DW_FORM_data4: | |
12664 | return "DW_FORM_data4"; | |
12665 | case DW_FORM_data8: | |
12666 | return "DW_FORM_data8"; | |
12667 | case DW_FORM_string: | |
12668 | return "DW_FORM_string"; | |
12669 | case DW_FORM_block: | |
12670 | return "DW_FORM_block"; | |
12671 | case DW_FORM_block1: | |
12672 | return "DW_FORM_block1"; | |
12673 | case DW_FORM_data1: | |
12674 | return "DW_FORM_data1"; | |
12675 | case DW_FORM_flag: | |
12676 | return "DW_FORM_flag"; | |
12677 | case DW_FORM_sdata: | |
12678 | return "DW_FORM_sdata"; | |
12679 | case DW_FORM_strp: | |
12680 | return "DW_FORM_strp"; | |
12681 | case DW_FORM_udata: | |
12682 | return "DW_FORM_udata"; | |
12683 | case DW_FORM_ref_addr: | |
12684 | return "DW_FORM_ref_addr"; | |
12685 | case DW_FORM_ref1: | |
12686 | return "DW_FORM_ref1"; | |
12687 | case DW_FORM_ref2: | |
12688 | return "DW_FORM_ref2"; | |
12689 | case DW_FORM_ref4: | |
12690 | return "DW_FORM_ref4"; | |
12691 | case DW_FORM_ref8: | |
12692 | return "DW_FORM_ref8"; | |
12693 | case DW_FORM_ref_udata: | |
12694 | return "DW_FORM_ref_udata"; | |
12695 | case DW_FORM_indirect: | |
12696 | return "DW_FORM_indirect"; | |
348e048f DE |
12697 | case DW_FORM_sec_offset: |
12698 | return "DW_FORM_sec_offset"; | |
12699 | case DW_FORM_exprloc: | |
12700 | return "DW_FORM_exprloc"; | |
12701 | case DW_FORM_flag_present: | |
12702 | return "DW_FORM_flag_present"; | |
55f1336d TT |
12703 | case DW_FORM_ref_sig8: |
12704 | return "DW_FORM_ref_sig8"; | |
c906108c SS |
12705 | default: |
12706 | return "DW_FORM_<unknown>"; | |
12707 | } | |
12708 | } | |
12709 | ||
12710 | /* Convert a DWARF stack opcode into its string name. */ | |
12711 | ||
9eae7c52 | 12712 | const char * |
b1bfef65 | 12713 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
12714 | { |
12715 | switch (op) | |
12716 | { | |
12717 | case DW_OP_addr: | |
12718 | return "DW_OP_addr"; | |
12719 | case DW_OP_deref: | |
12720 | return "DW_OP_deref"; | |
12721 | case DW_OP_const1u: | |
12722 | return "DW_OP_const1u"; | |
12723 | case DW_OP_const1s: | |
12724 | return "DW_OP_const1s"; | |
12725 | case DW_OP_const2u: | |
12726 | return "DW_OP_const2u"; | |
12727 | case DW_OP_const2s: | |
12728 | return "DW_OP_const2s"; | |
12729 | case DW_OP_const4u: | |
12730 | return "DW_OP_const4u"; | |
12731 | case DW_OP_const4s: | |
12732 | return "DW_OP_const4s"; | |
12733 | case DW_OP_const8u: | |
12734 | return "DW_OP_const8u"; | |
12735 | case DW_OP_const8s: | |
12736 | return "DW_OP_const8s"; | |
12737 | case DW_OP_constu: | |
12738 | return "DW_OP_constu"; | |
12739 | case DW_OP_consts: | |
12740 | return "DW_OP_consts"; | |
12741 | case DW_OP_dup: | |
12742 | return "DW_OP_dup"; | |
12743 | case DW_OP_drop: | |
12744 | return "DW_OP_drop"; | |
12745 | case DW_OP_over: | |
12746 | return "DW_OP_over"; | |
12747 | case DW_OP_pick: | |
12748 | return "DW_OP_pick"; | |
12749 | case DW_OP_swap: | |
12750 | return "DW_OP_swap"; | |
12751 | case DW_OP_rot: | |
12752 | return "DW_OP_rot"; | |
12753 | case DW_OP_xderef: | |
12754 | return "DW_OP_xderef"; | |
12755 | case DW_OP_abs: | |
12756 | return "DW_OP_abs"; | |
12757 | case DW_OP_and: | |
12758 | return "DW_OP_and"; | |
12759 | case DW_OP_div: | |
12760 | return "DW_OP_div"; | |
12761 | case DW_OP_minus: | |
12762 | return "DW_OP_minus"; | |
12763 | case DW_OP_mod: | |
12764 | return "DW_OP_mod"; | |
12765 | case DW_OP_mul: | |
12766 | return "DW_OP_mul"; | |
12767 | case DW_OP_neg: | |
12768 | return "DW_OP_neg"; | |
12769 | case DW_OP_not: | |
12770 | return "DW_OP_not"; | |
12771 | case DW_OP_or: | |
12772 | return "DW_OP_or"; | |
12773 | case DW_OP_plus: | |
12774 | return "DW_OP_plus"; | |
12775 | case DW_OP_plus_uconst: | |
12776 | return "DW_OP_plus_uconst"; | |
12777 | case DW_OP_shl: | |
12778 | return "DW_OP_shl"; | |
12779 | case DW_OP_shr: | |
12780 | return "DW_OP_shr"; | |
12781 | case DW_OP_shra: | |
12782 | return "DW_OP_shra"; | |
12783 | case DW_OP_xor: | |
12784 | return "DW_OP_xor"; | |
12785 | case DW_OP_bra: | |
12786 | return "DW_OP_bra"; | |
12787 | case DW_OP_eq: | |
12788 | return "DW_OP_eq"; | |
12789 | case DW_OP_ge: | |
12790 | return "DW_OP_ge"; | |
12791 | case DW_OP_gt: | |
12792 | return "DW_OP_gt"; | |
12793 | case DW_OP_le: | |
12794 | return "DW_OP_le"; | |
12795 | case DW_OP_lt: | |
12796 | return "DW_OP_lt"; | |
12797 | case DW_OP_ne: | |
12798 | return "DW_OP_ne"; | |
12799 | case DW_OP_skip: | |
12800 | return "DW_OP_skip"; | |
12801 | case DW_OP_lit0: | |
12802 | return "DW_OP_lit0"; | |
12803 | case DW_OP_lit1: | |
12804 | return "DW_OP_lit1"; | |
12805 | case DW_OP_lit2: | |
12806 | return "DW_OP_lit2"; | |
12807 | case DW_OP_lit3: | |
12808 | return "DW_OP_lit3"; | |
12809 | case DW_OP_lit4: | |
12810 | return "DW_OP_lit4"; | |
12811 | case DW_OP_lit5: | |
12812 | return "DW_OP_lit5"; | |
12813 | case DW_OP_lit6: | |
12814 | return "DW_OP_lit6"; | |
12815 | case DW_OP_lit7: | |
12816 | return "DW_OP_lit7"; | |
12817 | case DW_OP_lit8: | |
12818 | return "DW_OP_lit8"; | |
12819 | case DW_OP_lit9: | |
12820 | return "DW_OP_lit9"; | |
12821 | case DW_OP_lit10: | |
12822 | return "DW_OP_lit10"; | |
12823 | case DW_OP_lit11: | |
12824 | return "DW_OP_lit11"; | |
12825 | case DW_OP_lit12: | |
12826 | return "DW_OP_lit12"; | |
12827 | case DW_OP_lit13: | |
12828 | return "DW_OP_lit13"; | |
12829 | case DW_OP_lit14: | |
12830 | return "DW_OP_lit14"; | |
12831 | case DW_OP_lit15: | |
12832 | return "DW_OP_lit15"; | |
12833 | case DW_OP_lit16: | |
12834 | return "DW_OP_lit16"; | |
12835 | case DW_OP_lit17: | |
12836 | return "DW_OP_lit17"; | |
12837 | case DW_OP_lit18: | |
12838 | return "DW_OP_lit18"; | |
12839 | case DW_OP_lit19: | |
12840 | return "DW_OP_lit19"; | |
12841 | case DW_OP_lit20: | |
12842 | return "DW_OP_lit20"; | |
12843 | case DW_OP_lit21: | |
12844 | return "DW_OP_lit21"; | |
12845 | case DW_OP_lit22: | |
12846 | return "DW_OP_lit22"; | |
12847 | case DW_OP_lit23: | |
12848 | return "DW_OP_lit23"; | |
12849 | case DW_OP_lit24: | |
12850 | return "DW_OP_lit24"; | |
12851 | case DW_OP_lit25: | |
12852 | return "DW_OP_lit25"; | |
12853 | case DW_OP_lit26: | |
12854 | return "DW_OP_lit26"; | |
12855 | case DW_OP_lit27: | |
12856 | return "DW_OP_lit27"; | |
12857 | case DW_OP_lit28: | |
12858 | return "DW_OP_lit28"; | |
12859 | case DW_OP_lit29: | |
12860 | return "DW_OP_lit29"; | |
12861 | case DW_OP_lit30: | |
12862 | return "DW_OP_lit30"; | |
12863 | case DW_OP_lit31: | |
12864 | return "DW_OP_lit31"; | |
12865 | case DW_OP_reg0: | |
12866 | return "DW_OP_reg0"; | |
12867 | case DW_OP_reg1: | |
12868 | return "DW_OP_reg1"; | |
12869 | case DW_OP_reg2: | |
12870 | return "DW_OP_reg2"; | |
12871 | case DW_OP_reg3: | |
12872 | return "DW_OP_reg3"; | |
12873 | case DW_OP_reg4: | |
12874 | return "DW_OP_reg4"; | |
12875 | case DW_OP_reg5: | |
12876 | return "DW_OP_reg5"; | |
12877 | case DW_OP_reg6: | |
12878 | return "DW_OP_reg6"; | |
12879 | case DW_OP_reg7: | |
12880 | return "DW_OP_reg7"; | |
12881 | case DW_OP_reg8: | |
12882 | return "DW_OP_reg8"; | |
12883 | case DW_OP_reg9: | |
12884 | return "DW_OP_reg9"; | |
12885 | case DW_OP_reg10: | |
12886 | return "DW_OP_reg10"; | |
12887 | case DW_OP_reg11: | |
12888 | return "DW_OP_reg11"; | |
12889 | case DW_OP_reg12: | |
12890 | return "DW_OP_reg12"; | |
12891 | case DW_OP_reg13: | |
12892 | return "DW_OP_reg13"; | |
12893 | case DW_OP_reg14: | |
12894 | return "DW_OP_reg14"; | |
12895 | case DW_OP_reg15: | |
12896 | return "DW_OP_reg15"; | |
12897 | case DW_OP_reg16: | |
12898 | return "DW_OP_reg16"; | |
12899 | case DW_OP_reg17: | |
12900 | return "DW_OP_reg17"; | |
12901 | case DW_OP_reg18: | |
12902 | return "DW_OP_reg18"; | |
12903 | case DW_OP_reg19: | |
12904 | return "DW_OP_reg19"; | |
12905 | case DW_OP_reg20: | |
12906 | return "DW_OP_reg20"; | |
12907 | case DW_OP_reg21: | |
12908 | return "DW_OP_reg21"; | |
12909 | case DW_OP_reg22: | |
12910 | return "DW_OP_reg22"; | |
12911 | case DW_OP_reg23: | |
12912 | return "DW_OP_reg23"; | |
12913 | case DW_OP_reg24: | |
12914 | return "DW_OP_reg24"; | |
12915 | case DW_OP_reg25: | |
12916 | return "DW_OP_reg25"; | |
12917 | case DW_OP_reg26: | |
12918 | return "DW_OP_reg26"; | |
12919 | case DW_OP_reg27: | |
12920 | return "DW_OP_reg27"; | |
12921 | case DW_OP_reg28: | |
12922 | return "DW_OP_reg28"; | |
12923 | case DW_OP_reg29: | |
12924 | return "DW_OP_reg29"; | |
12925 | case DW_OP_reg30: | |
12926 | return "DW_OP_reg30"; | |
12927 | case DW_OP_reg31: | |
12928 | return "DW_OP_reg31"; | |
12929 | case DW_OP_breg0: | |
12930 | return "DW_OP_breg0"; | |
12931 | case DW_OP_breg1: | |
12932 | return "DW_OP_breg1"; | |
12933 | case DW_OP_breg2: | |
12934 | return "DW_OP_breg2"; | |
12935 | case DW_OP_breg3: | |
12936 | return "DW_OP_breg3"; | |
12937 | case DW_OP_breg4: | |
12938 | return "DW_OP_breg4"; | |
12939 | case DW_OP_breg5: | |
12940 | return "DW_OP_breg5"; | |
12941 | case DW_OP_breg6: | |
12942 | return "DW_OP_breg6"; | |
12943 | case DW_OP_breg7: | |
12944 | return "DW_OP_breg7"; | |
12945 | case DW_OP_breg8: | |
12946 | return "DW_OP_breg8"; | |
12947 | case DW_OP_breg9: | |
12948 | return "DW_OP_breg9"; | |
12949 | case DW_OP_breg10: | |
12950 | return "DW_OP_breg10"; | |
12951 | case DW_OP_breg11: | |
12952 | return "DW_OP_breg11"; | |
12953 | case DW_OP_breg12: | |
12954 | return "DW_OP_breg12"; | |
12955 | case DW_OP_breg13: | |
12956 | return "DW_OP_breg13"; | |
12957 | case DW_OP_breg14: | |
12958 | return "DW_OP_breg14"; | |
12959 | case DW_OP_breg15: | |
12960 | return "DW_OP_breg15"; | |
12961 | case DW_OP_breg16: | |
12962 | return "DW_OP_breg16"; | |
12963 | case DW_OP_breg17: | |
12964 | return "DW_OP_breg17"; | |
12965 | case DW_OP_breg18: | |
12966 | return "DW_OP_breg18"; | |
12967 | case DW_OP_breg19: | |
12968 | return "DW_OP_breg19"; | |
12969 | case DW_OP_breg20: | |
12970 | return "DW_OP_breg20"; | |
12971 | case DW_OP_breg21: | |
12972 | return "DW_OP_breg21"; | |
12973 | case DW_OP_breg22: | |
12974 | return "DW_OP_breg22"; | |
12975 | case DW_OP_breg23: | |
12976 | return "DW_OP_breg23"; | |
12977 | case DW_OP_breg24: | |
12978 | return "DW_OP_breg24"; | |
12979 | case DW_OP_breg25: | |
12980 | return "DW_OP_breg25"; | |
12981 | case DW_OP_breg26: | |
12982 | return "DW_OP_breg26"; | |
12983 | case DW_OP_breg27: | |
12984 | return "DW_OP_breg27"; | |
12985 | case DW_OP_breg28: | |
12986 | return "DW_OP_breg28"; | |
12987 | case DW_OP_breg29: | |
12988 | return "DW_OP_breg29"; | |
12989 | case DW_OP_breg30: | |
12990 | return "DW_OP_breg30"; | |
12991 | case DW_OP_breg31: | |
12992 | return "DW_OP_breg31"; | |
12993 | case DW_OP_regx: | |
12994 | return "DW_OP_regx"; | |
12995 | case DW_OP_fbreg: | |
12996 | return "DW_OP_fbreg"; | |
12997 | case DW_OP_bregx: | |
12998 | return "DW_OP_bregx"; | |
12999 | case DW_OP_piece: | |
13000 | return "DW_OP_piece"; | |
13001 | case DW_OP_deref_size: | |
13002 | return "DW_OP_deref_size"; | |
13003 | case DW_OP_xderef_size: | |
13004 | return "DW_OP_xderef_size"; | |
13005 | case DW_OP_nop: | |
13006 | return "DW_OP_nop"; | |
b7619582 | 13007 | /* DWARF 3 extensions. */ |
ed348acc EZ |
13008 | case DW_OP_push_object_address: |
13009 | return "DW_OP_push_object_address"; | |
13010 | case DW_OP_call2: | |
13011 | return "DW_OP_call2"; | |
13012 | case DW_OP_call4: | |
13013 | return "DW_OP_call4"; | |
13014 | case DW_OP_call_ref: | |
13015 | return "DW_OP_call_ref"; | |
b7619582 GF |
13016 | case DW_OP_form_tls_address: |
13017 | return "DW_OP_form_tls_address"; | |
13018 | case DW_OP_call_frame_cfa: | |
13019 | return "DW_OP_call_frame_cfa"; | |
13020 | case DW_OP_bit_piece: | |
13021 | return "DW_OP_bit_piece"; | |
9eae7c52 TT |
13022 | /* DWARF 4 extensions. */ |
13023 | case DW_OP_implicit_value: | |
13024 | return "DW_OP_implicit_value"; | |
13025 | case DW_OP_stack_value: | |
13026 | return "DW_OP_stack_value"; | |
13027 | /* GNU extensions. */ | |
ed348acc EZ |
13028 | case DW_OP_GNU_push_tls_address: |
13029 | return "DW_OP_GNU_push_tls_address"; | |
42be36b3 CT |
13030 | case DW_OP_GNU_uninit: |
13031 | return "DW_OP_GNU_uninit"; | |
8cf6f0b1 TT |
13032 | case DW_OP_GNU_implicit_pointer: |
13033 | return "DW_OP_GNU_implicit_pointer"; | |
c906108c | 13034 | default: |
b1bfef65 | 13035 | return NULL; |
c906108c SS |
13036 | } |
13037 | } | |
13038 | ||
13039 | static char * | |
fba45db2 | 13040 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
13041 | { |
13042 | if (mybool) | |
13043 | return "TRUE"; | |
13044 | else | |
13045 | return "FALSE"; | |
13046 | } | |
13047 | ||
13048 | /* Convert a DWARF type code into its string name. */ | |
13049 | ||
13050 | static char * | |
aa1ee363 | 13051 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
13052 | { |
13053 | switch (enc) | |
13054 | { | |
b7619582 GF |
13055 | case DW_ATE_void: |
13056 | return "DW_ATE_void"; | |
c906108c SS |
13057 | case DW_ATE_address: |
13058 | return "DW_ATE_address"; | |
13059 | case DW_ATE_boolean: | |
13060 | return "DW_ATE_boolean"; | |
13061 | case DW_ATE_complex_float: | |
13062 | return "DW_ATE_complex_float"; | |
13063 | case DW_ATE_float: | |
13064 | return "DW_ATE_float"; | |
13065 | case DW_ATE_signed: | |
13066 | return "DW_ATE_signed"; | |
13067 | case DW_ATE_signed_char: | |
13068 | return "DW_ATE_signed_char"; | |
13069 | case DW_ATE_unsigned: | |
13070 | return "DW_ATE_unsigned"; | |
13071 | case DW_ATE_unsigned_char: | |
13072 | return "DW_ATE_unsigned_char"; | |
b7619582 | 13073 | /* DWARF 3. */ |
d9fa45fe DC |
13074 | case DW_ATE_imaginary_float: |
13075 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
13076 | case DW_ATE_packed_decimal: |
13077 | return "DW_ATE_packed_decimal"; | |
13078 | case DW_ATE_numeric_string: | |
13079 | return "DW_ATE_numeric_string"; | |
13080 | case DW_ATE_edited: | |
13081 | return "DW_ATE_edited"; | |
13082 | case DW_ATE_signed_fixed: | |
13083 | return "DW_ATE_signed_fixed"; | |
13084 | case DW_ATE_unsigned_fixed: | |
13085 | return "DW_ATE_unsigned_fixed"; | |
13086 | case DW_ATE_decimal_float: | |
13087 | return "DW_ATE_decimal_float"; | |
75079b2b TT |
13088 | /* DWARF 4. */ |
13089 | case DW_ATE_UTF: | |
13090 | return "DW_ATE_UTF"; | |
b7619582 GF |
13091 | /* HP extensions. */ |
13092 | case DW_ATE_HP_float80: | |
13093 | return "DW_ATE_HP_float80"; | |
13094 | case DW_ATE_HP_complex_float80: | |
13095 | return "DW_ATE_HP_complex_float80"; | |
13096 | case DW_ATE_HP_float128: | |
13097 | return "DW_ATE_HP_float128"; | |
13098 | case DW_ATE_HP_complex_float128: | |
13099 | return "DW_ATE_HP_complex_float128"; | |
13100 | case DW_ATE_HP_floathpintel: | |
13101 | return "DW_ATE_HP_floathpintel"; | |
13102 | case DW_ATE_HP_imaginary_float80: | |
13103 | return "DW_ATE_HP_imaginary_float80"; | |
13104 | case DW_ATE_HP_imaginary_float128: | |
13105 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
13106 | default: |
13107 | return "DW_ATE_<unknown>"; | |
13108 | } | |
13109 | } | |
13110 | ||
0963b4bd | 13111 | /* Convert a DWARF call frame info operation to its string name. */ |
c906108c SS |
13112 | |
13113 | #if 0 | |
13114 | static char * | |
aa1ee363 | 13115 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
13116 | { |
13117 | switch (cfi_opc) | |
13118 | { | |
13119 | case DW_CFA_advance_loc: | |
13120 | return "DW_CFA_advance_loc"; | |
13121 | case DW_CFA_offset: | |
13122 | return "DW_CFA_offset"; | |
13123 | case DW_CFA_restore: | |
13124 | return "DW_CFA_restore"; | |
13125 | case DW_CFA_nop: | |
13126 | return "DW_CFA_nop"; | |
13127 | case DW_CFA_set_loc: | |
13128 | return "DW_CFA_set_loc"; | |
13129 | case DW_CFA_advance_loc1: | |
13130 | return "DW_CFA_advance_loc1"; | |
13131 | case DW_CFA_advance_loc2: | |
13132 | return "DW_CFA_advance_loc2"; | |
13133 | case DW_CFA_advance_loc4: | |
13134 | return "DW_CFA_advance_loc4"; | |
13135 | case DW_CFA_offset_extended: | |
13136 | return "DW_CFA_offset_extended"; | |
13137 | case DW_CFA_restore_extended: | |
13138 | return "DW_CFA_restore_extended"; | |
13139 | case DW_CFA_undefined: | |
13140 | return "DW_CFA_undefined"; | |
13141 | case DW_CFA_same_value: | |
13142 | return "DW_CFA_same_value"; | |
13143 | case DW_CFA_register: | |
13144 | return "DW_CFA_register"; | |
13145 | case DW_CFA_remember_state: | |
13146 | return "DW_CFA_remember_state"; | |
13147 | case DW_CFA_restore_state: | |
13148 | return "DW_CFA_restore_state"; | |
13149 | case DW_CFA_def_cfa: | |
13150 | return "DW_CFA_def_cfa"; | |
13151 | case DW_CFA_def_cfa_register: | |
13152 | return "DW_CFA_def_cfa_register"; | |
13153 | case DW_CFA_def_cfa_offset: | |
13154 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 13155 | /* DWARF 3. */ |
985cb1a3 JM |
13156 | case DW_CFA_def_cfa_expression: |
13157 | return "DW_CFA_def_cfa_expression"; | |
13158 | case DW_CFA_expression: | |
13159 | return "DW_CFA_expression"; | |
13160 | case DW_CFA_offset_extended_sf: | |
13161 | return "DW_CFA_offset_extended_sf"; | |
13162 | case DW_CFA_def_cfa_sf: | |
13163 | return "DW_CFA_def_cfa_sf"; | |
13164 | case DW_CFA_def_cfa_offset_sf: | |
13165 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
13166 | case DW_CFA_val_offset: |
13167 | return "DW_CFA_val_offset"; | |
13168 | case DW_CFA_val_offset_sf: | |
13169 | return "DW_CFA_val_offset_sf"; | |
13170 | case DW_CFA_val_expression: | |
13171 | return "DW_CFA_val_expression"; | |
13172 | /* SGI/MIPS specific. */ | |
c906108c SS |
13173 | case DW_CFA_MIPS_advance_loc8: |
13174 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 13175 | /* GNU extensions. */ |
985cb1a3 JM |
13176 | case DW_CFA_GNU_window_save: |
13177 | return "DW_CFA_GNU_window_save"; | |
13178 | case DW_CFA_GNU_args_size: | |
13179 | return "DW_CFA_GNU_args_size"; | |
13180 | case DW_CFA_GNU_negative_offset_extended: | |
13181 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
13182 | default: |
13183 | return "DW_CFA_<unknown>"; | |
13184 | } | |
13185 | } | |
13186 | #endif | |
13187 | ||
f9aca02d | 13188 | static void |
d97bc12b | 13189 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
13190 | { |
13191 | unsigned int i; | |
13192 | ||
d97bc12b DE |
13193 | print_spaces (indent, f); |
13194 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
c906108c | 13195 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
d97bc12b DE |
13196 | |
13197 | if (die->parent != NULL) | |
13198 | { | |
13199 | print_spaces (indent, f); | |
13200 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
13201 | die->parent->offset); | |
13202 | } | |
13203 | ||
13204 | print_spaces (indent, f); | |
13205 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 13206 | dwarf_bool_name (die->child != NULL)); |
c906108c | 13207 | |
d97bc12b DE |
13208 | print_spaces (indent, f); |
13209 | fprintf_unfiltered (f, " attributes:\n"); | |
13210 | ||
c906108c SS |
13211 | for (i = 0; i < die->num_attrs; ++i) |
13212 | { | |
d97bc12b DE |
13213 | print_spaces (indent, f); |
13214 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
13215 | dwarf_attr_name (die->attrs[i].name), |
13216 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 13217 | |
c906108c SS |
13218 | switch (die->attrs[i].form) |
13219 | { | |
13220 | case DW_FORM_ref_addr: | |
13221 | case DW_FORM_addr: | |
d97bc12b | 13222 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 13223 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
13224 | break; |
13225 | case DW_FORM_block2: | |
13226 | case DW_FORM_block4: | |
13227 | case DW_FORM_block: | |
13228 | case DW_FORM_block1: | |
3e43a32a MS |
13229 | fprintf_unfiltered (f, "block: size %d", |
13230 | DW_BLOCK (&die->attrs[i])->size); | |
c906108c | 13231 | break; |
2dc7f7b3 TT |
13232 | case DW_FORM_exprloc: |
13233 | fprintf_unfiltered (f, "expression: size %u", | |
13234 | DW_BLOCK (&die->attrs[i])->size); | |
13235 | break; | |
10b3939b DJ |
13236 | case DW_FORM_ref1: |
13237 | case DW_FORM_ref2: | |
13238 | case DW_FORM_ref4: | |
d97bc12b | 13239 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
10b3939b DJ |
13240 | (long) (DW_ADDR (&die->attrs[i]))); |
13241 | break; | |
c906108c SS |
13242 | case DW_FORM_data1: |
13243 | case DW_FORM_data2: | |
13244 | case DW_FORM_data4: | |
ce5d95e1 | 13245 | case DW_FORM_data8: |
c906108c SS |
13246 | case DW_FORM_udata: |
13247 | case DW_FORM_sdata: | |
43bbcdc2 PH |
13248 | fprintf_unfiltered (f, "constant: %s", |
13249 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 13250 | break; |
2dc7f7b3 TT |
13251 | case DW_FORM_sec_offset: |
13252 | fprintf_unfiltered (f, "section offset: %s", | |
13253 | pulongest (DW_UNSND (&die->attrs[i]))); | |
13254 | break; | |
55f1336d | 13255 | case DW_FORM_ref_sig8: |
348e048f DE |
13256 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) |
13257 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
13258 | DW_SIGNATURED_TYPE (&die->attrs[i])->offset); | |
13259 | else | |
13260 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
13261 | break; | |
c906108c | 13262 | case DW_FORM_string: |
4bdf3d34 | 13263 | case DW_FORM_strp: |
8285870a | 13264 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 13265 | DW_STRING (&die->attrs[i]) |
8285870a JK |
13266 | ? DW_STRING (&die->attrs[i]) : "", |
13267 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
13268 | break; |
13269 | case DW_FORM_flag: | |
13270 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 13271 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 13272 | else |
d97bc12b | 13273 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 13274 | break; |
2dc7f7b3 TT |
13275 | case DW_FORM_flag_present: |
13276 | fprintf_unfiltered (f, "flag: TRUE"); | |
13277 | break; | |
a8329558 | 13278 | case DW_FORM_indirect: |
0963b4bd MS |
13279 | /* The reader will have reduced the indirect form to |
13280 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
13281 | fprintf_unfiltered (f, |
13282 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 13283 | break; |
c906108c | 13284 | default: |
d97bc12b | 13285 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 13286 | die->attrs[i].form); |
d97bc12b | 13287 | break; |
c906108c | 13288 | } |
d97bc12b | 13289 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
13290 | } |
13291 | } | |
13292 | ||
f9aca02d | 13293 | static void |
d97bc12b | 13294 | dump_die_for_error (struct die_info *die) |
c906108c | 13295 | { |
d97bc12b DE |
13296 | dump_die_shallow (gdb_stderr, 0, die); |
13297 | } | |
13298 | ||
13299 | static void | |
13300 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
13301 | { | |
13302 | int indent = level * 4; | |
13303 | ||
13304 | gdb_assert (die != NULL); | |
13305 | ||
13306 | if (level >= max_level) | |
13307 | return; | |
13308 | ||
13309 | dump_die_shallow (f, indent, die); | |
13310 | ||
13311 | if (die->child != NULL) | |
c906108c | 13312 | { |
d97bc12b DE |
13313 | print_spaces (indent, f); |
13314 | fprintf_unfiltered (f, " Children:"); | |
13315 | if (level + 1 < max_level) | |
13316 | { | |
13317 | fprintf_unfiltered (f, "\n"); | |
13318 | dump_die_1 (f, level + 1, max_level, die->child); | |
13319 | } | |
13320 | else | |
13321 | { | |
3e43a32a MS |
13322 | fprintf_unfiltered (f, |
13323 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
13324 | } |
13325 | } | |
13326 | ||
13327 | if (die->sibling != NULL && level > 0) | |
13328 | { | |
13329 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
13330 | } |
13331 | } | |
13332 | ||
d97bc12b DE |
13333 | /* This is called from the pdie macro in gdbinit.in. |
13334 | It's not static so gcc will keep a copy callable from gdb. */ | |
13335 | ||
13336 | void | |
13337 | dump_die (struct die_info *die, int max_level) | |
13338 | { | |
13339 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
13340 | } | |
13341 | ||
f9aca02d | 13342 | static void |
51545339 | 13343 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13344 | { |
51545339 | 13345 | void **slot; |
c906108c | 13346 | |
51545339 DJ |
13347 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset, INSERT); |
13348 | ||
13349 | *slot = die; | |
c906108c SS |
13350 | } |
13351 | ||
93311388 DE |
13352 | static int |
13353 | is_ref_attr (struct attribute *attr) | |
c906108c | 13354 | { |
c906108c SS |
13355 | switch (attr->form) |
13356 | { | |
13357 | case DW_FORM_ref_addr: | |
c906108c SS |
13358 | case DW_FORM_ref1: |
13359 | case DW_FORM_ref2: | |
13360 | case DW_FORM_ref4: | |
613e1657 | 13361 | case DW_FORM_ref8: |
c906108c | 13362 | case DW_FORM_ref_udata: |
93311388 | 13363 | return 1; |
c906108c | 13364 | default: |
93311388 | 13365 | return 0; |
c906108c | 13366 | } |
93311388 DE |
13367 | } |
13368 | ||
13369 | static unsigned int | |
13370 | dwarf2_get_ref_die_offset (struct attribute *attr) | |
13371 | { | |
13372 | if (is_ref_attr (attr)) | |
13373 | return DW_ADDR (attr); | |
13374 | ||
13375 | complaint (&symfile_complaints, | |
13376 | _("unsupported die ref attribute form: '%s'"), | |
13377 | dwarf_form_name (attr->form)); | |
13378 | return 0; | |
c906108c SS |
13379 | } |
13380 | ||
43bbcdc2 PH |
13381 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
13382 | * the value held by the attribute is not constant. */ | |
a02abb62 | 13383 | |
43bbcdc2 | 13384 | static LONGEST |
a02abb62 JB |
13385 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
13386 | { | |
13387 | if (attr->form == DW_FORM_sdata) | |
13388 | return DW_SND (attr); | |
13389 | else if (attr->form == DW_FORM_udata | |
13390 | || attr->form == DW_FORM_data1 | |
13391 | || attr->form == DW_FORM_data2 | |
13392 | || attr->form == DW_FORM_data4 | |
13393 | || attr->form == DW_FORM_data8) | |
13394 | return DW_UNSND (attr); | |
13395 | else | |
13396 | { | |
3e43a32a MS |
13397 | complaint (&symfile_complaints, |
13398 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
13399 | dwarf_form_name (attr->form)); |
13400 | return default_value; | |
13401 | } | |
13402 | } | |
13403 | ||
03dd20cc | 13404 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
348e048f DE |
13405 | unit and add it to our queue. |
13406 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
13407 | meaning either PER_CU is already queued or it is already loaded. */ | |
03dd20cc | 13408 | |
348e048f | 13409 | static int |
03dd20cc DJ |
13410 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, |
13411 | struct dwarf2_per_cu_data *per_cu) | |
13412 | { | |
98bfdba5 PA |
13413 | /* We may arrive here during partial symbol reading, if we need full |
13414 | DIEs to process an unusual case (e.g. template arguments). Do | |
13415 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
13416 | if (dwarf2_per_objfile->reading_partial_symbols) | |
13417 | { | |
13418 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
13419 | return 1; | |
13420 | return 0; | |
13421 | } | |
13422 | ||
03dd20cc DJ |
13423 | /* Mark the dependence relation so that we don't flush PER_CU |
13424 | too early. */ | |
13425 | dwarf2_add_dependence (this_cu, per_cu); | |
13426 | ||
13427 | /* If it's already on the queue, we have nothing to do. */ | |
13428 | if (per_cu->queued) | |
348e048f | 13429 | return 0; |
03dd20cc DJ |
13430 | |
13431 | /* If the compilation unit is already loaded, just mark it as | |
13432 | used. */ | |
13433 | if (per_cu->cu != NULL) | |
13434 | { | |
13435 | per_cu->cu->last_used = 0; | |
348e048f | 13436 | return 0; |
03dd20cc DJ |
13437 | } |
13438 | ||
13439 | /* Add it to the queue. */ | |
13440 | queue_comp_unit (per_cu, this_cu->objfile); | |
348e048f DE |
13441 | |
13442 | return 1; | |
13443 | } | |
13444 | ||
13445 | /* Follow reference or signature attribute ATTR of SRC_DIE. | |
13446 | On entry *REF_CU is the CU of SRC_DIE. | |
13447 | On exit *REF_CU is the CU of the result. */ | |
13448 | ||
13449 | static struct die_info * | |
13450 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
13451 | struct dwarf2_cu **ref_cu) | |
13452 | { | |
13453 | struct die_info *die; | |
13454 | ||
13455 | if (is_ref_attr (attr)) | |
13456 | die = follow_die_ref (src_die, attr, ref_cu); | |
55f1336d | 13457 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
13458 | die = follow_die_sig (src_die, attr, ref_cu); |
13459 | else | |
13460 | { | |
13461 | dump_die_for_error (src_die); | |
13462 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
13463 | (*ref_cu)->objfile->name); | |
13464 | } | |
13465 | ||
13466 | return die; | |
03dd20cc DJ |
13467 | } |
13468 | ||
5c631832 | 13469 | /* Follow reference OFFSET. |
673bfd45 DE |
13470 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
13471 | On exit *REF_CU is the CU of the result. | |
13472 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 13473 | |
f9aca02d | 13474 | static struct die_info * |
5c631832 | 13475 | follow_die_offset (unsigned int offset, struct dwarf2_cu **ref_cu) |
c906108c | 13476 | { |
10b3939b | 13477 | struct die_info temp_die; |
f2f0e013 | 13478 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 13479 | |
348e048f DE |
13480 | gdb_assert (cu->per_cu != NULL); |
13481 | ||
98bfdba5 PA |
13482 | target_cu = cu; |
13483 | ||
348e048f DE |
13484 | if (cu->per_cu->from_debug_types) |
13485 | { | |
13486 | /* .debug_types CUs cannot reference anything outside their CU. | |
13487 | If they need to, they have to reference a signatured type via | |
55f1336d | 13488 | DW_FORM_ref_sig8. */ |
348e048f | 13489 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 13490 | return NULL; |
348e048f DE |
13491 | } |
13492 | else if (! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
13493 | { |
13494 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 13495 | |
45452591 | 13496 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
13497 | |
13498 | /* If necessary, add it to the queue and load its DIEs. */ | |
348e048f DE |
13499 | if (maybe_queue_comp_unit (cu, per_cu)) |
13500 | load_full_comp_unit (per_cu, cu->objfile); | |
03dd20cc | 13501 | |
10b3939b DJ |
13502 | target_cu = per_cu->cu; |
13503 | } | |
98bfdba5 PA |
13504 | else if (cu->dies == NULL) |
13505 | { | |
13506 | /* We're loading full DIEs during partial symbol reading. */ | |
13507 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
13508 | load_full_comp_unit (cu->per_cu, cu->objfile); | |
13509 | } | |
c906108c | 13510 | |
f2f0e013 | 13511 | *ref_cu = target_cu; |
51545339 | 13512 | temp_die.offset = offset; |
5c631832 JK |
13513 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset); |
13514 | } | |
10b3939b | 13515 | |
5c631832 JK |
13516 | /* Follow reference attribute ATTR of SRC_DIE. |
13517 | On entry *REF_CU is the CU of SRC_DIE. | |
13518 | On exit *REF_CU is the CU of the result. */ | |
13519 | ||
13520 | static struct die_info * | |
13521 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
13522 | struct dwarf2_cu **ref_cu) | |
13523 | { | |
13524 | unsigned int offset = dwarf2_get_ref_die_offset (attr); | |
13525 | struct dwarf2_cu *cu = *ref_cu; | |
13526 | struct die_info *die; | |
13527 | ||
13528 | die = follow_die_offset (offset, ref_cu); | |
13529 | if (!die) | |
13530 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
13531 | "at 0x%x [in module %s]"), | |
13532 | offset, src_die->offset, cu->objfile->name); | |
348e048f | 13533 | |
5c631832 JK |
13534 | return die; |
13535 | } | |
13536 | ||
13537 | /* Return DWARF block and its CU referenced by OFFSET at PER_CU. Returned | |
13538 | value is intended for DW_OP_call*. */ | |
13539 | ||
13540 | struct dwarf2_locexpr_baton | |
13541 | dwarf2_fetch_die_location_block (unsigned int offset, | |
8cf6f0b1 TT |
13542 | struct dwarf2_per_cu_data *per_cu, |
13543 | CORE_ADDR (*get_frame_pc) (void *baton), | |
13544 | void *baton) | |
5c631832 JK |
13545 | { |
13546 | struct dwarf2_cu *cu = per_cu->cu; | |
13547 | struct die_info *die; | |
13548 | struct attribute *attr; | |
13549 | struct dwarf2_locexpr_baton retval; | |
13550 | ||
8cf6f0b1 TT |
13551 | dw2_setup (per_cu->objfile); |
13552 | ||
5c631832 JK |
13553 | die = follow_die_offset (offset, &cu); |
13554 | if (!die) | |
13555 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
13556 | offset, per_cu->cu->objfile->name); | |
13557 | ||
13558 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
13559 | if (!attr) | |
13560 | { | |
13561 | /* DWARF: "If there is no such attribute, then there is no effect.". */ | |
13562 | ||
13563 | retval.data = NULL; | |
13564 | retval.size = 0; | |
13565 | } | |
8cf6f0b1 TT |
13566 | else if (attr_form_is_section_offset (attr)) |
13567 | { | |
13568 | struct dwarf2_loclist_baton loclist_baton; | |
13569 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
13570 | size_t size; | |
13571 | ||
13572 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
13573 | ||
13574 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
13575 | &size, pc); | |
13576 | retval.size = size; | |
13577 | } | |
5c631832 JK |
13578 | else |
13579 | { | |
13580 | if (!attr_form_is_block (attr)) | |
13581 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
13582 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
13583 | offset, per_cu->cu->objfile->name); | |
13584 | ||
13585 | retval.data = DW_BLOCK (attr)->data; | |
13586 | retval.size = DW_BLOCK (attr)->size; | |
13587 | } | |
13588 | retval.per_cu = cu->per_cu; | |
13589 | return retval; | |
348e048f DE |
13590 | } |
13591 | ||
13592 | /* Follow the signature attribute ATTR in SRC_DIE. | |
13593 | On entry *REF_CU is the CU of SRC_DIE. | |
13594 | On exit *REF_CU is the CU of the result. */ | |
13595 | ||
13596 | static struct die_info * | |
13597 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
13598 | struct dwarf2_cu **ref_cu) | |
13599 | { | |
13600 | struct objfile *objfile = (*ref_cu)->objfile; | |
13601 | struct die_info temp_die; | |
13602 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
13603 | struct dwarf2_cu *sig_cu; | |
13604 | struct die_info *die; | |
13605 | ||
13606 | /* sig_type will be NULL if the signatured type is missing from | |
13607 | the debug info. */ | |
13608 | if (sig_type == NULL) | |
13609 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
13610 | "at 0x%x [in module %s]"), | |
13611 | src_die->offset, objfile->name); | |
13612 | ||
13613 | /* If necessary, add it to the queue and load its DIEs. */ | |
13614 | ||
13615 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu)) | |
13616 | read_signatured_type (objfile, sig_type); | |
13617 | ||
13618 | gdb_assert (sig_type->per_cu.cu != NULL); | |
13619 | ||
13620 | sig_cu = sig_type->per_cu.cu; | |
13621 | temp_die.offset = sig_cu->header.offset + sig_type->type_offset; | |
13622 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, temp_die.offset); | |
13623 | if (die) | |
13624 | { | |
13625 | *ref_cu = sig_cu; | |
13626 | return die; | |
13627 | } | |
13628 | ||
3e43a32a MS |
13629 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced " |
13630 | "from DIE at 0x%x [in module %s]"), | |
348e048f DE |
13631 | sig_type->type_offset, src_die->offset, objfile->name); |
13632 | } | |
13633 | ||
13634 | /* Given an offset of a signatured type, return its signatured_type. */ | |
13635 | ||
13636 | static struct signatured_type * | |
13637 | lookup_signatured_type_at_offset (struct objfile *objfile, unsigned int offset) | |
13638 | { | |
13639 | gdb_byte *info_ptr = dwarf2_per_objfile->types.buffer + offset; | |
13640 | unsigned int length, initial_length_size; | |
13641 | unsigned int sig_offset; | |
13642 | struct signatured_type find_entry, *type_sig; | |
13643 | ||
13644 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
13645 | sig_offset = (initial_length_size | |
13646 | + 2 /*version*/ | |
13647 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
13648 | + 1 /*address_size*/); | |
13649 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
13650 | type_sig = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
13651 | ||
13652 | /* This is only used to lookup previously recorded types. | |
13653 | If we didn't find it, it's our bug. */ | |
13654 | gdb_assert (type_sig != NULL); | |
13655 | gdb_assert (offset == type_sig->offset); | |
13656 | ||
13657 | return type_sig; | |
13658 | } | |
13659 | ||
13660 | /* Read in signatured type at OFFSET and build its CU and die(s). */ | |
13661 | ||
13662 | static void | |
13663 | read_signatured_type_at_offset (struct objfile *objfile, | |
13664 | unsigned int offset) | |
13665 | { | |
13666 | struct signatured_type *type_sig; | |
13667 | ||
be391dca TT |
13668 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
13669 | ||
348e048f DE |
13670 | /* We have the section offset, but we need the signature to do the |
13671 | hash table lookup. */ | |
13672 | type_sig = lookup_signatured_type_at_offset (objfile, offset); | |
13673 | ||
13674 | gdb_assert (type_sig->per_cu.cu == NULL); | |
13675 | ||
13676 | read_signatured_type (objfile, type_sig); | |
13677 | ||
13678 | gdb_assert (type_sig->per_cu.cu != NULL); | |
13679 | } | |
13680 | ||
13681 | /* Read in a signatured type and build its CU and DIEs. */ | |
13682 | ||
13683 | static void | |
13684 | read_signatured_type (struct objfile *objfile, | |
13685 | struct signatured_type *type_sig) | |
13686 | { | |
1fd400ff | 13687 | gdb_byte *types_ptr; |
348e048f DE |
13688 | struct die_reader_specs reader_specs; |
13689 | struct dwarf2_cu *cu; | |
13690 | ULONGEST signature; | |
13691 | struct cleanup *back_to, *free_cu_cleanup; | |
348e048f | 13692 | |
1fd400ff TT |
13693 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
13694 | types_ptr = dwarf2_per_objfile->types.buffer + type_sig->offset; | |
13695 | ||
348e048f DE |
13696 | gdb_assert (type_sig->per_cu.cu == NULL); |
13697 | ||
9816fde3 JK |
13698 | cu = xmalloc (sizeof (*cu)); |
13699 | init_one_comp_unit (cu, objfile); | |
13700 | ||
348e048f DE |
13701 | type_sig->per_cu.cu = cu; |
13702 | cu->per_cu = &type_sig->per_cu; | |
13703 | ||
13704 | /* If an error occurs while loading, release our storage. */ | |
13705 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
13706 | ||
13707 | types_ptr = read_type_comp_unit_head (&cu->header, &signature, | |
13708 | types_ptr, objfile->obfd); | |
13709 | gdb_assert (signature == type_sig->signature); | |
13710 | ||
13711 | cu->die_hash | |
13712 | = htab_create_alloc_ex (cu->header.length / 12, | |
13713 | die_hash, | |
13714 | die_eq, | |
13715 | NULL, | |
13716 | &cu->comp_unit_obstack, | |
13717 | hashtab_obstack_allocate, | |
13718 | dummy_obstack_deallocate); | |
13719 | ||
13720 | dwarf2_read_abbrevs (cu->objfile->obfd, cu); | |
13721 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
13722 | ||
13723 | init_cu_die_reader (&reader_specs, cu); | |
13724 | ||
13725 | cu->dies = read_die_and_children (&reader_specs, types_ptr, &types_ptr, | |
13726 | NULL /*parent*/); | |
13727 | ||
13728 | /* We try not to read any attributes in this function, because not | |
13729 | all objfiles needed for references have been loaded yet, and symbol | |
13730 | table processing isn't initialized. But we have to set the CU language, | |
13731 | or we won't be able to build types correctly. */ | |
9816fde3 | 13732 | prepare_one_comp_unit (cu, cu->dies); |
348e048f DE |
13733 | |
13734 | do_cleanups (back_to); | |
13735 | ||
13736 | /* We've successfully allocated this compilation unit. Let our caller | |
13737 | clean it up when finished with it. */ | |
13738 | discard_cleanups (free_cu_cleanup); | |
13739 | ||
13740 | type_sig->per_cu.cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
13741 | dwarf2_per_objfile->read_in_chain = &type_sig->per_cu; | |
c906108c SS |
13742 | } |
13743 | ||
c906108c SS |
13744 | /* Decode simple location descriptions. |
13745 | Given a pointer to a dwarf block that defines a location, compute | |
13746 | the location and return the value. | |
13747 | ||
4cecd739 DJ |
13748 | NOTE drow/2003-11-18: This function is called in two situations |
13749 | now: for the address of static or global variables (partial symbols | |
13750 | only) and for offsets into structures which are expected to be | |
13751 | (more or less) constant. The partial symbol case should go away, | |
13752 | and only the constant case should remain. That will let this | |
13753 | function complain more accurately. A few special modes are allowed | |
13754 | without complaint for global variables (for instance, global | |
13755 | register values and thread-local values). | |
c906108c SS |
13756 | |
13757 | A location description containing no operations indicates that the | |
4cecd739 | 13758 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
13759 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
13760 | callers will only want a very basic result and this can become a | |
13761 | complaint. | |
c906108c | 13762 | |
d53d4ac5 | 13763 | Note that stack[0] is unused except as a default error return. */ |
c906108c SS |
13764 | |
13765 | static CORE_ADDR | |
e7c27a73 | 13766 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 13767 | { |
e7c27a73 | 13768 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13769 | int i; |
13770 | int size = blk->size; | |
fe1b8b76 | 13771 | gdb_byte *data = blk->data; |
c906108c SS |
13772 | CORE_ADDR stack[64]; |
13773 | int stacki; | |
13774 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 13775 | gdb_byte op; |
c906108c SS |
13776 | |
13777 | i = 0; | |
13778 | stacki = 0; | |
13779 | stack[stacki] = 0; | |
d53d4ac5 | 13780 | stack[++stacki] = 0; |
c906108c SS |
13781 | |
13782 | while (i < size) | |
13783 | { | |
c906108c SS |
13784 | op = data[i++]; |
13785 | switch (op) | |
13786 | { | |
f1bea926 JM |
13787 | case DW_OP_lit0: |
13788 | case DW_OP_lit1: | |
13789 | case DW_OP_lit2: | |
13790 | case DW_OP_lit3: | |
13791 | case DW_OP_lit4: | |
13792 | case DW_OP_lit5: | |
13793 | case DW_OP_lit6: | |
13794 | case DW_OP_lit7: | |
13795 | case DW_OP_lit8: | |
13796 | case DW_OP_lit9: | |
13797 | case DW_OP_lit10: | |
13798 | case DW_OP_lit11: | |
13799 | case DW_OP_lit12: | |
13800 | case DW_OP_lit13: | |
13801 | case DW_OP_lit14: | |
13802 | case DW_OP_lit15: | |
13803 | case DW_OP_lit16: | |
13804 | case DW_OP_lit17: | |
13805 | case DW_OP_lit18: | |
13806 | case DW_OP_lit19: | |
13807 | case DW_OP_lit20: | |
13808 | case DW_OP_lit21: | |
13809 | case DW_OP_lit22: | |
13810 | case DW_OP_lit23: | |
13811 | case DW_OP_lit24: | |
13812 | case DW_OP_lit25: | |
13813 | case DW_OP_lit26: | |
13814 | case DW_OP_lit27: | |
13815 | case DW_OP_lit28: | |
13816 | case DW_OP_lit29: | |
13817 | case DW_OP_lit30: | |
13818 | case DW_OP_lit31: | |
13819 | stack[++stacki] = op - DW_OP_lit0; | |
13820 | break; | |
13821 | ||
c906108c SS |
13822 | case DW_OP_reg0: |
13823 | case DW_OP_reg1: | |
13824 | case DW_OP_reg2: | |
13825 | case DW_OP_reg3: | |
13826 | case DW_OP_reg4: | |
13827 | case DW_OP_reg5: | |
13828 | case DW_OP_reg6: | |
13829 | case DW_OP_reg7: | |
13830 | case DW_OP_reg8: | |
13831 | case DW_OP_reg9: | |
13832 | case DW_OP_reg10: | |
13833 | case DW_OP_reg11: | |
13834 | case DW_OP_reg12: | |
13835 | case DW_OP_reg13: | |
13836 | case DW_OP_reg14: | |
13837 | case DW_OP_reg15: | |
13838 | case DW_OP_reg16: | |
13839 | case DW_OP_reg17: | |
13840 | case DW_OP_reg18: | |
13841 | case DW_OP_reg19: | |
13842 | case DW_OP_reg20: | |
13843 | case DW_OP_reg21: | |
13844 | case DW_OP_reg22: | |
13845 | case DW_OP_reg23: | |
13846 | case DW_OP_reg24: | |
13847 | case DW_OP_reg25: | |
13848 | case DW_OP_reg26: | |
13849 | case DW_OP_reg27: | |
13850 | case DW_OP_reg28: | |
13851 | case DW_OP_reg29: | |
13852 | case DW_OP_reg30: | |
13853 | case DW_OP_reg31: | |
c906108c | 13854 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
13855 | if (i < size) |
13856 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
13857 | break; |
13858 | ||
13859 | case DW_OP_regx: | |
c906108c SS |
13860 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
13861 | i += bytes_read; | |
c906108c | 13862 | stack[++stacki] = unsnd; |
4cecd739 DJ |
13863 | if (i < size) |
13864 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
13865 | break; |
13866 | ||
13867 | case DW_OP_addr: | |
107d2387 | 13868 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 13869 | cu, &bytes_read); |
107d2387 | 13870 | i += bytes_read; |
c906108c SS |
13871 | break; |
13872 | ||
13873 | case DW_OP_const1u: | |
13874 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
13875 | i += 1; | |
13876 | break; | |
13877 | ||
13878 | case DW_OP_const1s: | |
13879 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
13880 | i += 1; | |
13881 | break; | |
13882 | ||
13883 | case DW_OP_const2u: | |
13884 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
13885 | i += 2; | |
13886 | break; | |
13887 | ||
13888 | case DW_OP_const2s: | |
13889 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
13890 | i += 2; | |
13891 | break; | |
13892 | ||
13893 | case DW_OP_const4u: | |
13894 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
13895 | i += 4; | |
13896 | break; | |
13897 | ||
13898 | case DW_OP_const4s: | |
13899 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
13900 | i += 4; | |
13901 | break; | |
13902 | ||
13903 | case DW_OP_constu: | |
13904 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 13905 | &bytes_read); |
c906108c SS |
13906 | i += bytes_read; |
13907 | break; | |
13908 | ||
13909 | case DW_OP_consts: | |
13910 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
13911 | i += bytes_read; | |
13912 | break; | |
13913 | ||
f1bea926 JM |
13914 | case DW_OP_dup: |
13915 | stack[stacki + 1] = stack[stacki]; | |
13916 | stacki++; | |
13917 | break; | |
13918 | ||
c906108c SS |
13919 | case DW_OP_plus: |
13920 | stack[stacki - 1] += stack[stacki]; | |
13921 | stacki--; | |
13922 | break; | |
13923 | ||
13924 | case DW_OP_plus_uconst: | |
3e43a32a MS |
13925 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), |
13926 | &bytes_read); | |
c906108c SS |
13927 | i += bytes_read; |
13928 | break; | |
13929 | ||
13930 | case DW_OP_minus: | |
f1bea926 | 13931 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
13932 | stacki--; |
13933 | break; | |
13934 | ||
7a292a7a | 13935 | case DW_OP_deref: |
7a292a7a | 13936 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
13937 | this using GDB's address_class enum. This is valid for partial |
13938 | global symbols, although the variable's address will be bogus | |
13939 | in the psymtab. */ | |
7a292a7a | 13940 | if (i < size) |
4d3c2250 | 13941 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
13942 | break; |
13943 | ||
9d774e44 | 13944 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
13945 | /* The top of the stack has the offset from the beginning |
13946 | of the thread control block at which the variable is located. */ | |
13947 | /* Nothing should follow this operator, so the top of stack would | |
13948 | be returned. */ | |
4cecd739 DJ |
13949 | /* This is valid for partial global symbols, but the variable's |
13950 | address will be bogus in the psymtab. */ | |
9d774e44 | 13951 | if (i < size) |
4d3c2250 | 13952 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
13953 | break; |
13954 | ||
42be36b3 CT |
13955 | case DW_OP_GNU_uninit: |
13956 | break; | |
13957 | ||
c906108c | 13958 | default: |
b1bfef65 TT |
13959 | { |
13960 | const char *name = dwarf_stack_op_name (op); | |
13961 | ||
13962 | if (name) | |
13963 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
13964 | name); | |
13965 | else | |
13966 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
13967 | op); | |
13968 | } | |
13969 | ||
c906108c SS |
13970 | return (stack[stacki]); |
13971 | } | |
d53d4ac5 TT |
13972 | |
13973 | /* Enforce maximum stack depth of SIZE-1 to avoid writing | |
13974 | outside of the allocated space. Also enforce minimum>0. */ | |
13975 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
13976 | { | |
13977 | complaint (&symfile_complaints, | |
13978 | _("location description stack overflow")); | |
13979 | return 0; | |
13980 | } | |
13981 | ||
13982 | if (stacki <= 0) | |
13983 | { | |
13984 | complaint (&symfile_complaints, | |
13985 | _("location description stack underflow")); | |
13986 | return 0; | |
13987 | } | |
c906108c SS |
13988 | } |
13989 | return (stack[stacki]); | |
13990 | } | |
13991 | ||
13992 | /* memory allocation interface */ | |
13993 | ||
c906108c | 13994 | static struct dwarf_block * |
7b5a2f43 | 13995 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
13996 | { |
13997 | struct dwarf_block *blk; | |
13998 | ||
13999 | blk = (struct dwarf_block *) | |
7b5a2f43 | 14000 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
14001 | return (blk); |
14002 | } | |
14003 | ||
14004 | static struct abbrev_info * | |
f3dd6933 | 14005 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
14006 | { |
14007 | struct abbrev_info *abbrev; | |
14008 | ||
f3dd6933 DJ |
14009 | abbrev = (struct abbrev_info *) |
14010 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
14011 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
14012 | return (abbrev); | |
14013 | } | |
14014 | ||
14015 | static struct die_info * | |
b60c80d6 | 14016 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
14017 | { |
14018 | struct die_info *die; | |
b60c80d6 DJ |
14019 | size_t size = sizeof (struct die_info); |
14020 | ||
14021 | if (num_attrs > 1) | |
14022 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 14023 | |
b60c80d6 | 14024 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
14025 | memset (die, 0, sizeof (struct die_info)); |
14026 | return (die); | |
14027 | } | |
2e276125 JB |
14028 | |
14029 | \f | |
14030 | /* Macro support. */ | |
14031 | ||
2e276125 JB |
14032 | /* Return the full name of file number I in *LH's file name table. |
14033 | Use COMP_DIR as the name of the current directory of the | |
14034 | compilation. The result is allocated using xmalloc; the caller is | |
14035 | responsible for freeing it. */ | |
14036 | static char * | |
14037 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
14038 | { | |
6a83a1e6 EZ |
14039 | /* Is the file number a valid index into the line header's file name |
14040 | table? Remember that file numbers start with one, not zero. */ | |
14041 | if (1 <= file && file <= lh->num_file_names) | |
14042 | { | |
14043 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 14044 | |
6a83a1e6 EZ |
14045 | if (IS_ABSOLUTE_PATH (fe->name)) |
14046 | return xstrdup (fe->name); | |
14047 | else | |
14048 | { | |
14049 | const char *dir; | |
14050 | int dir_len; | |
14051 | char *full_name; | |
14052 | ||
14053 | if (fe->dir_index) | |
14054 | dir = lh->include_dirs[fe->dir_index - 1]; | |
14055 | else | |
14056 | dir = comp_dir; | |
14057 | ||
14058 | if (dir) | |
14059 | { | |
14060 | dir_len = strlen (dir); | |
14061 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
14062 | strcpy (full_name, dir); | |
14063 | full_name[dir_len] = '/'; | |
14064 | strcpy (full_name + dir_len + 1, fe->name); | |
14065 | return full_name; | |
14066 | } | |
14067 | else | |
14068 | return xstrdup (fe->name); | |
14069 | } | |
14070 | } | |
2e276125 JB |
14071 | else |
14072 | { | |
6a83a1e6 EZ |
14073 | /* The compiler produced a bogus file number. We can at least |
14074 | record the macro definitions made in the file, even if we | |
14075 | won't be able to find the file by name. */ | |
14076 | char fake_name[80]; | |
9a619af0 | 14077 | |
6a83a1e6 | 14078 | sprintf (fake_name, "<bad macro file number %d>", file); |
2e276125 | 14079 | |
6e70227d | 14080 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
14081 | _("bad file number in macro information (%d)"), |
14082 | file); | |
2e276125 | 14083 | |
6a83a1e6 | 14084 | return xstrdup (fake_name); |
2e276125 JB |
14085 | } |
14086 | } | |
14087 | ||
14088 | ||
14089 | static struct macro_source_file * | |
14090 | macro_start_file (int file, int line, | |
14091 | struct macro_source_file *current_file, | |
14092 | const char *comp_dir, | |
14093 | struct line_header *lh, struct objfile *objfile) | |
14094 | { | |
14095 | /* The full name of this source file. */ | |
14096 | char *full_name = file_full_name (file, lh, comp_dir); | |
14097 | ||
14098 | /* We don't create a macro table for this compilation unit | |
14099 | at all until we actually get a filename. */ | |
14100 | if (! pending_macros) | |
4a146b47 | 14101 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 14102 | objfile->macro_cache); |
2e276125 JB |
14103 | |
14104 | if (! current_file) | |
14105 | /* If we have no current file, then this must be the start_file | |
14106 | directive for the compilation unit's main source file. */ | |
14107 | current_file = macro_set_main (pending_macros, full_name); | |
14108 | else | |
14109 | current_file = macro_include (current_file, line, full_name); | |
14110 | ||
14111 | xfree (full_name); | |
6e70227d | 14112 | |
2e276125 JB |
14113 | return current_file; |
14114 | } | |
14115 | ||
14116 | ||
14117 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
14118 | followed by a null byte. */ | |
14119 | static char * | |
14120 | copy_string (const char *buf, int len) | |
14121 | { | |
14122 | char *s = xmalloc (len + 1); | |
9a619af0 | 14123 | |
2e276125 JB |
14124 | memcpy (s, buf, len); |
14125 | s[len] = '\0'; | |
2e276125 JB |
14126 | return s; |
14127 | } | |
14128 | ||
14129 | ||
14130 | static const char * | |
14131 | consume_improper_spaces (const char *p, const char *body) | |
14132 | { | |
14133 | if (*p == ' ') | |
14134 | { | |
4d3c2250 | 14135 | complaint (&symfile_complaints, |
3e43a32a MS |
14136 | _("macro definition contains spaces " |
14137 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 14138 | body); |
2e276125 JB |
14139 | |
14140 | while (*p == ' ') | |
14141 | p++; | |
14142 | } | |
14143 | ||
14144 | return p; | |
14145 | } | |
14146 | ||
14147 | ||
14148 | static void | |
14149 | parse_macro_definition (struct macro_source_file *file, int line, | |
14150 | const char *body) | |
14151 | { | |
14152 | const char *p; | |
14153 | ||
14154 | /* The body string takes one of two forms. For object-like macro | |
14155 | definitions, it should be: | |
14156 | ||
14157 | <macro name> " " <definition> | |
14158 | ||
14159 | For function-like macro definitions, it should be: | |
14160 | ||
14161 | <macro name> "() " <definition> | |
14162 | or | |
14163 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
14164 | ||
14165 | Spaces may appear only where explicitly indicated, and in the | |
14166 | <definition>. | |
14167 | ||
14168 | The Dwarf 2 spec says that an object-like macro's name is always | |
14169 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 14170 | the space when the macro's definition is the empty string. |
2e276125 JB |
14171 | |
14172 | The Dwarf 2 spec says that there should be no spaces between the | |
14173 | formal arguments in a function-like macro's formal argument list, | |
14174 | but versions of GCC around March 2002 include spaces after the | |
14175 | commas. */ | |
14176 | ||
14177 | ||
14178 | /* Find the extent of the macro name. The macro name is terminated | |
14179 | by either a space or null character (for an object-like macro) or | |
14180 | an opening paren (for a function-like macro). */ | |
14181 | for (p = body; *p; p++) | |
14182 | if (*p == ' ' || *p == '(') | |
14183 | break; | |
14184 | ||
14185 | if (*p == ' ' || *p == '\0') | |
14186 | { | |
14187 | /* It's an object-like macro. */ | |
14188 | int name_len = p - body; | |
14189 | char *name = copy_string (body, name_len); | |
14190 | const char *replacement; | |
14191 | ||
14192 | if (*p == ' ') | |
14193 | replacement = body + name_len + 1; | |
14194 | else | |
14195 | { | |
4d3c2250 | 14196 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14197 | replacement = body + name_len; |
14198 | } | |
6e70227d | 14199 | |
2e276125 JB |
14200 | macro_define_object (file, line, name, replacement); |
14201 | ||
14202 | xfree (name); | |
14203 | } | |
14204 | else if (*p == '(') | |
14205 | { | |
14206 | /* It's a function-like macro. */ | |
14207 | char *name = copy_string (body, p - body); | |
14208 | int argc = 0; | |
14209 | int argv_size = 1; | |
14210 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
14211 | ||
14212 | p++; | |
14213 | ||
14214 | p = consume_improper_spaces (p, body); | |
14215 | ||
14216 | /* Parse the formal argument list. */ | |
14217 | while (*p && *p != ')') | |
14218 | { | |
14219 | /* Find the extent of the current argument name. */ | |
14220 | const char *arg_start = p; | |
14221 | ||
14222 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
14223 | p++; | |
14224 | ||
14225 | if (! *p || p == arg_start) | |
4d3c2250 | 14226 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14227 | else |
14228 | { | |
14229 | /* Make sure argv has room for the new argument. */ | |
14230 | if (argc >= argv_size) | |
14231 | { | |
14232 | argv_size *= 2; | |
14233 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
14234 | } | |
14235 | ||
14236 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
14237 | } | |
14238 | ||
14239 | p = consume_improper_spaces (p, body); | |
14240 | ||
14241 | /* Consume the comma, if present. */ | |
14242 | if (*p == ',') | |
14243 | { | |
14244 | p++; | |
14245 | ||
14246 | p = consume_improper_spaces (p, body); | |
14247 | } | |
14248 | } | |
14249 | ||
14250 | if (*p == ')') | |
14251 | { | |
14252 | p++; | |
14253 | ||
14254 | if (*p == ' ') | |
14255 | /* Perfectly formed definition, no complaints. */ | |
14256 | macro_define_function (file, line, name, | |
6e70227d | 14257 | argc, (const char **) argv, |
2e276125 JB |
14258 | p + 1); |
14259 | else if (*p == '\0') | |
14260 | { | |
14261 | /* Complain, but do define it. */ | |
4d3c2250 | 14262 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 14263 | macro_define_function (file, line, name, |
6e70227d | 14264 | argc, (const char **) argv, |
2e276125 JB |
14265 | p); |
14266 | } | |
14267 | else | |
14268 | /* Just complain. */ | |
4d3c2250 | 14269 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14270 | } |
14271 | else | |
14272 | /* Just complain. */ | |
4d3c2250 | 14273 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14274 | |
14275 | xfree (name); | |
14276 | { | |
14277 | int i; | |
14278 | ||
14279 | for (i = 0; i < argc; i++) | |
14280 | xfree (argv[i]); | |
14281 | } | |
14282 | xfree (argv); | |
14283 | } | |
14284 | else | |
4d3c2250 | 14285 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14286 | } |
14287 | ||
14288 | ||
14289 | static void | |
14290 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
14291 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 14292 | struct dwarf2_cu *cu) |
2e276125 | 14293 | { |
fe1b8b76 | 14294 | gdb_byte *mac_ptr, *mac_end; |
2e276125 | 14295 | struct macro_source_file *current_file = 0; |
757a13d0 JK |
14296 | enum dwarf_macinfo_record_type macinfo_type; |
14297 | int at_commandline; | |
2e276125 | 14298 | |
be391dca TT |
14299 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
14300 | &dwarf2_per_objfile->macinfo); | |
dce234bc | 14301 | if (dwarf2_per_objfile->macinfo.buffer == NULL) |
2e276125 | 14302 | { |
e2e0b3e5 | 14303 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
14304 | return; |
14305 | } | |
14306 | ||
757a13d0 JK |
14307 | /* First pass: Find the name of the base filename. |
14308 | This filename is needed in order to process all macros whose definition | |
14309 | (or undefinition) comes from the command line. These macros are defined | |
14310 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
14311 | associated to the base file. | |
14312 | ||
14313 | To determine the base file name, we scan the macro definitions until we | |
14314 | reach the first DW_MACINFO_start_file entry. We then initialize | |
14315 | CURRENT_FILE accordingly so that any macro definition found before the | |
14316 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
14317 | ||
dce234bc PP |
14318 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
14319 | mac_end = dwarf2_per_objfile->macinfo.buffer | |
14320 | + dwarf2_per_objfile->macinfo.size; | |
2e276125 | 14321 | |
757a13d0 | 14322 | do |
2e276125 | 14323 | { |
2e276125 JB |
14324 | /* Do we at least have room for a macinfo type byte? */ |
14325 | if (mac_ptr >= mac_end) | |
14326 | { | |
757a13d0 | 14327 | /* Complaint is printed during the second pass as GDB will probably |
3e43a32a MS |
14328 | stop the first pass earlier upon finding |
14329 | DW_MACINFO_start_file. */ | |
757a13d0 | 14330 | break; |
2e276125 JB |
14331 | } |
14332 | ||
14333 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
14334 | mac_ptr++; | |
14335 | ||
14336 | switch (macinfo_type) | |
14337 | { | |
14338 | /* A zero macinfo type indicates the end of the macro | |
14339 | information. */ | |
14340 | case 0: | |
757a13d0 JK |
14341 | break; |
14342 | ||
14343 | case DW_MACINFO_define: | |
14344 | case DW_MACINFO_undef: | |
14345 | /* Only skip the data by MAC_PTR. */ | |
14346 | { | |
14347 | unsigned int bytes_read; | |
14348 | ||
14349 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14350 | mac_ptr += bytes_read; | |
9b1c24c8 | 14351 | read_direct_string (abfd, mac_ptr, &bytes_read); |
757a13d0 JK |
14352 | mac_ptr += bytes_read; |
14353 | } | |
14354 | break; | |
14355 | ||
14356 | case DW_MACINFO_start_file: | |
14357 | { | |
14358 | unsigned int bytes_read; | |
14359 | int line, file; | |
14360 | ||
14361 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14362 | mac_ptr += bytes_read; | |
14363 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14364 | mac_ptr += bytes_read; | |
14365 | ||
3e43a32a MS |
14366 | current_file = macro_start_file (file, line, current_file, |
14367 | comp_dir, lh, cu->objfile); | |
757a13d0 JK |
14368 | } |
14369 | break; | |
14370 | ||
14371 | case DW_MACINFO_end_file: | |
14372 | /* No data to skip by MAC_PTR. */ | |
14373 | break; | |
14374 | ||
14375 | case DW_MACINFO_vendor_ext: | |
14376 | /* Only skip the data by MAC_PTR. */ | |
14377 | { | |
14378 | unsigned int bytes_read; | |
14379 | ||
14380 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14381 | mac_ptr += bytes_read; | |
9b1c24c8 | 14382 | read_direct_string (abfd, mac_ptr, &bytes_read); |
757a13d0 JK |
14383 | mac_ptr += bytes_read; |
14384 | } | |
14385 | break; | |
14386 | ||
14387 | default: | |
14388 | break; | |
14389 | } | |
14390 | } while (macinfo_type != 0 && current_file == NULL); | |
14391 | ||
14392 | /* Second pass: Process all entries. | |
14393 | ||
14394 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
14395 | command-line macro definitions/undefinitions. This flag is unset when we | |
14396 | reach the first DW_MACINFO_start_file entry. */ | |
14397 | ||
dce234bc | 14398 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
757a13d0 JK |
14399 | |
14400 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
14401 | GDB is still reading the definitions from command line. First | |
14402 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
14403 | to create CURRENT_FILE for the main source holding also the command line | |
14404 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
14405 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
14406 | ||
14407 | at_commandline = 1; | |
14408 | ||
14409 | do | |
14410 | { | |
14411 | /* Do we at least have room for a macinfo type byte? */ | |
14412 | if (mac_ptr >= mac_end) | |
14413 | { | |
14414 | dwarf2_macros_too_long_complaint (); | |
14415 | break; | |
14416 | } | |
14417 | ||
14418 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
14419 | mac_ptr++; | |
14420 | ||
14421 | switch (macinfo_type) | |
14422 | { | |
14423 | /* A zero macinfo type indicates the end of the macro | |
14424 | information. */ | |
14425 | case 0: | |
14426 | break; | |
2e276125 JB |
14427 | |
14428 | case DW_MACINFO_define: | |
14429 | case DW_MACINFO_undef: | |
14430 | { | |
891d2f0b | 14431 | unsigned int bytes_read; |
2e276125 JB |
14432 | int line; |
14433 | char *body; | |
14434 | ||
14435 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14436 | mac_ptr += bytes_read; | |
9b1c24c8 | 14437 | body = read_direct_string (abfd, mac_ptr, &bytes_read); |
2e276125 JB |
14438 | mac_ptr += bytes_read; |
14439 | ||
14440 | if (! current_file) | |
757a13d0 JK |
14441 | { |
14442 | /* DWARF violation as no main source is present. */ | |
14443 | complaint (&symfile_complaints, | |
14444 | _("debug info with no main source gives macro %s " | |
14445 | "on line %d: %s"), | |
6e70227d DE |
14446 | macinfo_type == DW_MACINFO_define ? |
14447 | _("definition") : | |
905e0470 PM |
14448 | macinfo_type == DW_MACINFO_undef ? |
14449 | _("undefinition") : | |
14450 | _("something-or-other"), line, body); | |
757a13d0 JK |
14451 | break; |
14452 | } | |
3e43a32a MS |
14453 | if ((line == 0 && !at_commandline) |
14454 | || (line != 0 && at_commandline)) | |
4d3c2250 | 14455 | complaint (&symfile_complaints, |
757a13d0 JK |
14456 | _("debug info gives %s macro %s with %s line %d: %s"), |
14457 | at_commandline ? _("command-line") : _("in-file"), | |
905e0470 | 14458 | macinfo_type == DW_MACINFO_define ? |
6e70227d | 14459 | _("definition") : |
905e0470 PM |
14460 | macinfo_type == DW_MACINFO_undef ? |
14461 | _("undefinition") : | |
14462 | _("something-or-other"), | |
757a13d0 JK |
14463 | line == 0 ? _("zero") : _("non-zero"), line, body); |
14464 | ||
14465 | if (macinfo_type == DW_MACINFO_define) | |
14466 | parse_macro_definition (current_file, line, body); | |
14467 | else if (macinfo_type == DW_MACINFO_undef) | |
14468 | macro_undef (current_file, line, body); | |
2e276125 JB |
14469 | } |
14470 | break; | |
14471 | ||
14472 | case DW_MACINFO_start_file: | |
14473 | { | |
891d2f0b | 14474 | unsigned int bytes_read; |
2e276125 JB |
14475 | int line, file; |
14476 | ||
14477 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14478 | mac_ptr += bytes_read; | |
14479 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14480 | mac_ptr += bytes_read; | |
14481 | ||
3e43a32a MS |
14482 | if ((line == 0 && !at_commandline) |
14483 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
14484 | complaint (&symfile_complaints, |
14485 | _("debug info gives source %d included " | |
14486 | "from %s at %s line %d"), | |
14487 | file, at_commandline ? _("command-line") : _("file"), | |
14488 | line == 0 ? _("zero") : _("non-zero"), line); | |
14489 | ||
14490 | if (at_commandline) | |
14491 | { | |
14492 | /* This DW_MACINFO_start_file was executed in the pass one. */ | |
14493 | at_commandline = 0; | |
14494 | } | |
14495 | else | |
14496 | current_file = macro_start_file (file, line, | |
14497 | current_file, comp_dir, | |
14498 | lh, cu->objfile); | |
2e276125 JB |
14499 | } |
14500 | break; | |
14501 | ||
14502 | case DW_MACINFO_end_file: | |
14503 | if (! current_file) | |
4d3c2250 | 14504 | complaint (&symfile_complaints, |
3e43a32a MS |
14505 | _("macro debug info has an unmatched " |
14506 | "`close_file' directive")); | |
2e276125 JB |
14507 | else |
14508 | { | |
14509 | current_file = current_file->included_by; | |
14510 | if (! current_file) | |
14511 | { | |
14512 | enum dwarf_macinfo_record_type next_type; | |
14513 | ||
14514 | /* GCC circa March 2002 doesn't produce the zero | |
14515 | type byte marking the end of the compilation | |
14516 | unit. Complain if it's not there, but exit no | |
14517 | matter what. */ | |
14518 | ||
14519 | /* Do we at least have room for a macinfo type byte? */ | |
14520 | if (mac_ptr >= mac_end) | |
14521 | { | |
4d3c2250 | 14522 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
14523 | return; |
14524 | } | |
14525 | ||
14526 | /* We don't increment mac_ptr here, so this is just | |
14527 | a look-ahead. */ | |
14528 | next_type = read_1_byte (abfd, mac_ptr); | |
14529 | if (next_type != 0) | |
4d3c2250 | 14530 | complaint (&symfile_complaints, |
3e43a32a MS |
14531 | _("no terminating 0-type entry for " |
14532 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
14533 | |
14534 | return; | |
14535 | } | |
14536 | } | |
14537 | break; | |
14538 | ||
14539 | case DW_MACINFO_vendor_ext: | |
14540 | { | |
891d2f0b | 14541 | unsigned int bytes_read; |
2e276125 | 14542 | int constant; |
2e276125 JB |
14543 | |
14544 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14545 | mac_ptr += bytes_read; | |
e8e80198 | 14546 | read_direct_string (abfd, mac_ptr, &bytes_read); |
2e276125 JB |
14547 | mac_ptr += bytes_read; |
14548 | ||
14549 | /* We don't recognize any vendor extensions. */ | |
14550 | } | |
14551 | break; | |
14552 | } | |
757a13d0 | 14553 | } while (macinfo_type != 0); |
2e276125 | 14554 | } |
8e19ed76 PS |
14555 | |
14556 | /* Check if the attribute's form is a DW_FORM_block* | |
0963b4bd | 14557 | if so return true else false. */ |
8e19ed76 PS |
14558 | static int |
14559 | attr_form_is_block (struct attribute *attr) | |
14560 | { | |
14561 | return (attr == NULL ? 0 : | |
14562 | attr->form == DW_FORM_block1 | |
14563 | || attr->form == DW_FORM_block2 | |
14564 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
14565 | || attr->form == DW_FORM_block |
14566 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 14567 | } |
4c2df51b | 14568 | |
c6a0999f JB |
14569 | /* Return non-zero if ATTR's value is a section offset --- classes |
14570 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
14571 | You may use DW_UNSND (attr) to retrieve such offsets. | |
14572 | ||
14573 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
14574 | may have a value that belongs to more than one of these classes; it | |
14575 | would be ambiguous if we did, because we use the same forms for all | |
14576 | of them. */ | |
3690dd37 JB |
14577 | static int |
14578 | attr_form_is_section_offset (struct attribute *attr) | |
14579 | { | |
14580 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
14581 | || attr->form == DW_FORM_data8 |
14582 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
14583 | } |
14584 | ||
14585 | ||
14586 | /* Return non-zero if ATTR's value falls in the 'constant' class, or | |
14587 | zero otherwise. When this function returns true, you can apply | |
14588 | dwarf2_get_attr_constant_value to it. | |
14589 | ||
14590 | However, note that for some attributes you must check | |
14591 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
14592 | and DW_FORM_data8 are members of both the constant class, and of | |
14593 | the classes that contain offsets into other debug sections | |
14594 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
14595 | that, if an attribute's can be either a constant or one of the | |
14596 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
14597 | taken as section offsets, not constants. */ | |
14598 | static int | |
14599 | attr_form_is_constant (struct attribute *attr) | |
14600 | { | |
14601 | switch (attr->form) | |
14602 | { | |
14603 | case DW_FORM_sdata: | |
14604 | case DW_FORM_udata: | |
14605 | case DW_FORM_data1: | |
14606 | case DW_FORM_data2: | |
14607 | case DW_FORM_data4: | |
14608 | case DW_FORM_data8: | |
14609 | return 1; | |
14610 | default: | |
14611 | return 0; | |
14612 | } | |
14613 | } | |
14614 | ||
8cf6f0b1 TT |
14615 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
14616 | ||
14617 | static void | |
14618 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
14619 | struct dwarf2_loclist_baton *baton, | |
14620 | struct attribute *attr) | |
14621 | { | |
14622 | dwarf2_read_section (dwarf2_per_objfile->objfile, | |
14623 | &dwarf2_per_objfile->loc); | |
14624 | ||
14625 | baton->per_cu = cu->per_cu; | |
14626 | gdb_assert (baton->per_cu); | |
14627 | /* We don't know how long the location list is, but make sure we | |
14628 | don't run off the edge of the section. */ | |
14629 | baton->size = dwarf2_per_objfile->loc.size - DW_UNSND (attr); | |
14630 | baton->data = dwarf2_per_objfile->loc.buffer + DW_UNSND (attr); | |
14631 | baton->base_address = cu->base_address; | |
14632 | } | |
14633 | ||
4c2df51b DJ |
14634 | static void |
14635 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 14636 | struct dwarf2_cu *cu) |
4c2df51b | 14637 | { |
3690dd37 | 14638 | if (attr_form_is_section_offset (attr) |
99bcc461 DJ |
14639 | /* ".debug_loc" may not exist at all, or the offset may be outside |
14640 | the section. If so, fall through to the complaint in the | |
14641 | other branch. */ | |
9e0ac564 TT |
14642 | && DW_UNSND (attr) < dwarf2_section_size (dwarf2_per_objfile->objfile, |
14643 | &dwarf2_per_objfile->loc)) | |
4c2df51b | 14644 | { |
0d53c4c4 | 14645 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 14646 | |
4a146b47 | 14647 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 14648 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 14649 | |
8cf6f0b1 | 14650 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 14651 | |
d00adf39 | 14652 | if (cu->base_known == 0) |
0d53c4c4 | 14653 | complaint (&symfile_complaints, |
3e43a32a MS |
14654 | _("Location list used without " |
14655 | "specifying the CU base address.")); | |
4c2df51b | 14656 | |
768a979c | 14657 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
14658 | SYMBOL_LOCATION_BATON (sym) = baton; |
14659 | } | |
14660 | else | |
14661 | { | |
14662 | struct dwarf2_locexpr_baton *baton; | |
14663 | ||
4a146b47 | 14664 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 14665 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
14666 | baton->per_cu = cu->per_cu; |
14667 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
14668 | |
14669 | if (attr_form_is_block (attr)) | |
14670 | { | |
14671 | /* Note that we're just copying the block's data pointer | |
14672 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
14673 | info_buffer for SYM's objfile; right now we never release |
14674 | that buffer, but when we do clean up properly this may | |
14675 | need to change. */ | |
0d53c4c4 DJ |
14676 | baton->size = DW_BLOCK (attr)->size; |
14677 | baton->data = DW_BLOCK (attr)->data; | |
14678 | } | |
14679 | else | |
14680 | { | |
14681 | dwarf2_invalid_attrib_class_complaint ("location description", | |
14682 | SYMBOL_NATURAL_NAME (sym)); | |
14683 | baton->size = 0; | |
14684 | baton->data = NULL; | |
14685 | } | |
6e70227d | 14686 | |
768a979c | 14687 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
14688 | SYMBOL_LOCATION_BATON (sym) = baton; |
14689 | } | |
4c2df51b | 14690 | } |
6502dd73 | 14691 | |
9aa1f1e3 TT |
14692 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
14693 | came from a separate debuginfo file, then the master objfile is | |
14694 | returned. */ | |
ae0d2f24 UW |
14695 | |
14696 | struct objfile * | |
14697 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
14698 | { | |
9291a0cd | 14699 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
14700 | |
14701 | /* Return the master objfile, so that we can report and look up the | |
14702 | correct file containing this variable. */ | |
14703 | if (objfile->separate_debug_objfile_backlink) | |
14704 | objfile = objfile->separate_debug_objfile_backlink; | |
14705 | ||
14706 | return objfile; | |
14707 | } | |
14708 | ||
14709 | /* Return the address size given in the compilation unit header for CU. */ | |
14710 | ||
14711 | CORE_ADDR | |
14712 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) | |
14713 | { | |
14714 | if (per_cu->cu) | |
14715 | return per_cu->cu->header.addr_size; | |
14716 | else | |
14717 | { | |
14718 | /* If the CU is not currently read in, we re-read its header. */ | |
9291a0cd | 14719 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
14720 | struct dwarf2_per_objfile *per_objfile |
14721 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
dce234bc | 14722 | gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset; |
ae0d2f24 | 14723 | struct comp_unit_head cu_header; |
9a619af0 | 14724 | |
ae0d2f24 UW |
14725 | memset (&cu_header, 0, sizeof cu_header); |
14726 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
14727 | return cu_header.addr_size; | |
14728 | } | |
14729 | } | |
14730 | ||
9eae7c52 TT |
14731 | /* Return the offset size given in the compilation unit header for CU. */ |
14732 | ||
14733 | int | |
14734 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
14735 | { | |
14736 | if (per_cu->cu) | |
14737 | return per_cu->cu->header.offset_size; | |
14738 | else | |
14739 | { | |
14740 | /* If the CU is not currently read in, we re-read its header. */ | |
9291a0cd | 14741 | struct objfile *objfile = per_cu->objfile; |
9eae7c52 TT |
14742 | struct dwarf2_per_objfile *per_objfile |
14743 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
14744 | gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset; | |
14745 | struct comp_unit_head cu_header; | |
14746 | ||
14747 | memset (&cu_header, 0, sizeof cu_header); | |
14748 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
14749 | return cu_header.offset_size; | |
14750 | } | |
14751 | } | |
14752 | ||
9aa1f1e3 TT |
14753 | /* Return the text offset of the CU. The returned offset comes from |
14754 | this CU's objfile. If this objfile came from a separate debuginfo | |
14755 | file, then the offset may be different from the corresponding | |
14756 | offset in the parent objfile. */ | |
14757 | ||
14758 | CORE_ADDR | |
14759 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
14760 | { | |
bb3fa9d0 | 14761 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
14762 | |
14763 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14764 | } | |
14765 | ||
348e048f DE |
14766 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
14767 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
14768 | |
14769 | static struct dwarf2_per_cu_data * | |
c764a876 | 14770 | dwarf2_find_containing_comp_unit (unsigned int offset, |
ae038cb0 DJ |
14771 | struct objfile *objfile) |
14772 | { | |
14773 | struct dwarf2_per_cu_data *this_cu; | |
14774 | int low, high; | |
14775 | ||
ae038cb0 DJ |
14776 | low = 0; |
14777 | high = dwarf2_per_objfile->n_comp_units - 1; | |
14778 | while (high > low) | |
14779 | { | |
14780 | int mid = low + (high - low) / 2; | |
9a619af0 | 14781 | |
ae038cb0 DJ |
14782 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) |
14783 | high = mid; | |
14784 | else | |
14785 | low = mid + 1; | |
14786 | } | |
14787 | gdb_assert (low == high); | |
14788 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
14789 | { | |
10b3939b | 14790 | if (low == 0) |
8a3fe4f8 AC |
14791 | error (_("Dwarf Error: could not find partial DIE containing " |
14792 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
14793 | (long) offset, bfd_get_filename (objfile->obfd)); |
14794 | ||
ae038cb0 DJ |
14795 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
14796 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
14797 | } | |
14798 | else | |
14799 | { | |
14800 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
14801 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
14802 | && offset >= this_cu->offset + this_cu->length) | |
c764a876 | 14803 | error (_("invalid dwarf2 offset %u"), offset); |
ae038cb0 DJ |
14804 | gdb_assert (offset < this_cu->offset + this_cu->length); |
14805 | return this_cu; | |
14806 | } | |
14807 | } | |
14808 | ||
10b3939b DJ |
14809 | /* Locate the compilation unit from OBJFILE which is located at exactly |
14810 | OFFSET. Raises an error on failure. */ | |
14811 | ||
ae038cb0 | 14812 | static struct dwarf2_per_cu_data * |
c764a876 | 14813 | dwarf2_find_comp_unit (unsigned int offset, struct objfile *objfile) |
ae038cb0 DJ |
14814 | { |
14815 | struct dwarf2_per_cu_data *this_cu; | |
9a619af0 | 14816 | |
ae038cb0 DJ |
14817 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); |
14818 | if (this_cu->offset != offset) | |
c764a876 | 14819 | error (_("no compilation unit with offset %u."), offset); |
ae038cb0 DJ |
14820 | return this_cu; |
14821 | } | |
14822 | ||
9816fde3 | 14823 | /* Initialize dwarf2_cu CU for OBJFILE in a pre-allocated space. */ |
93311388 | 14824 | |
9816fde3 JK |
14825 | static void |
14826 | init_one_comp_unit (struct dwarf2_cu *cu, struct objfile *objfile) | |
93311388 | 14827 | { |
9816fde3 | 14828 | memset (cu, 0, sizeof (*cu)); |
93311388 DE |
14829 | cu->objfile = objfile; |
14830 | obstack_init (&cu->comp_unit_obstack); | |
9816fde3 JK |
14831 | } |
14832 | ||
14833 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
14834 | ||
14835 | static void | |
14836 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die) | |
14837 | { | |
14838 | struct attribute *attr; | |
14839 | ||
14840 | /* Set the language we're debugging. */ | |
14841 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
14842 | if (attr) | |
14843 | set_cu_language (DW_UNSND (attr), cu); | |
14844 | else | |
9cded63f TT |
14845 | { |
14846 | cu->language = language_minimal; | |
14847 | cu->language_defn = language_def (cu->language); | |
14848 | } | |
93311388 DE |
14849 | } |
14850 | ||
ae038cb0 DJ |
14851 | /* Release one cached compilation unit, CU. We unlink it from the tree |
14852 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
14853 | the caller is responsible for that. |
14854 | NOTE: DATA is a void * because this function is also used as a | |
14855 | cleanup routine. */ | |
ae038cb0 DJ |
14856 | |
14857 | static void | |
14858 | free_one_comp_unit (void *data) | |
14859 | { | |
14860 | struct dwarf2_cu *cu = data; | |
14861 | ||
14862 | if (cu->per_cu != NULL) | |
14863 | cu->per_cu->cu = NULL; | |
14864 | cu->per_cu = NULL; | |
14865 | ||
14866 | obstack_free (&cu->comp_unit_obstack, NULL); | |
14867 | ||
14868 | xfree (cu); | |
14869 | } | |
14870 | ||
72bf9492 | 14871 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
14872 | when we're finished with it. We can't free the pointer itself, but be |
14873 | sure to unlink it from the cache. Also release any associated storage | |
14874 | and perform cache maintenance. | |
72bf9492 DJ |
14875 | |
14876 | Only used during partial symbol parsing. */ | |
14877 | ||
14878 | static void | |
14879 | free_stack_comp_unit (void *data) | |
14880 | { | |
14881 | struct dwarf2_cu *cu = data; | |
14882 | ||
14883 | obstack_free (&cu->comp_unit_obstack, NULL); | |
14884 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
14885 | |
14886 | if (cu->per_cu != NULL) | |
14887 | { | |
14888 | /* This compilation unit is on the stack in our caller, so we | |
14889 | should not xfree it. Just unlink it. */ | |
14890 | cu->per_cu->cu = NULL; | |
14891 | cu->per_cu = NULL; | |
14892 | ||
14893 | /* If we had a per-cu pointer, then we may have other compilation | |
14894 | units loaded, so age them now. */ | |
14895 | age_cached_comp_units (); | |
14896 | } | |
14897 | } | |
14898 | ||
14899 | /* Free all cached compilation units. */ | |
14900 | ||
14901 | static void | |
14902 | free_cached_comp_units (void *data) | |
14903 | { | |
14904 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
14905 | ||
14906 | per_cu = dwarf2_per_objfile->read_in_chain; | |
14907 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
14908 | while (per_cu != NULL) | |
14909 | { | |
14910 | struct dwarf2_per_cu_data *next_cu; | |
14911 | ||
14912 | next_cu = per_cu->cu->read_in_chain; | |
14913 | ||
14914 | free_one_comp_unit (per_cu->cu); | |
14915 | *last_chain = next_cu; | |
14916 | ||
14917 | per_cu = next_cu; | |
14918 | } | |
14919 | } | |
14920 | ||
14921 | /* Increase the age counter on each cached compilation unit, and free | |
14922 | any that are too old. */ | |
14923 | ||
14924 | static void | |
14925 | age_cached_comp_units (void) | |
14926 | { | |
14927 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
14928 | ||
14929 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
14930 | per_cu = dwarf2_per_objfile->read_in_chain; | |
14931 | while (per_cu != NULL) | |
14932 | { | |
14933 | per_cu->cu->last_used ++; | |
14934 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
14935 | dwarf2_mark (per_cu->cu); | |
14936 | per_cu = per_cu->cu->read_in_chain; | |
14937 | } | |
14938 | ||
14939 | per_cu = dwarf2_per_objfile->read_in_chain; | |
14940 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
14941 | while (per_cu != NULL) | |
14942 | { | |
14943 | struct dwarf2_per_cu_data *next_cu; | |
14944 | ||
14945 | next_cu = per_cu->cu->read_in_chain; | |
14946 | ||
14947 | if (!per_cu->cu->mark) | |
14948 | { | |
14949 | free_one_comp_unit (per_cu->cu); | |
14950 | *last_chain = next_cu; | |
14951 | } | |
14952 | else | |
14953 | last_chain = &per_cu->cu->read_in_chain; | |
14954 | ||
14955 | per_cu = next_cu; | |
14956 | } | |
14957 | } | |
14958 | ||
14959 | /* Remove a single compilation unit from the cache. */ | |
14960 | ||
14961 | static void | |
14962 | free_one_cached_comp_unit (void *target_cu) | |
14963 | { | |
14964 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
14965 | ||
14966 | per_cu = dwarf2_per_objfile->read_in_chain; | |
14967 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
14968 | while (per_cu != NULL) | |
14969 | { | |
14970 | struct dwarf2_per_cu_data *next_cu; | |
14971 | ||
14972 | next_cu = per_cu->cu->read_in_chain; | |
14973 | ||
14974 | if (per_cu->cu == target_cu) | |
14975 | { | |
14976 | free_one_comp_unit (per_cu->cu); | |
14977 | *last_chain = next_cu; | |
14978 | break; | |
14979 | } | |
14980 | else | |
14981 | last_chain = &per_cu->cu->read_in_chain; | |
14982 | ||
14983 | per_cu = next_cu; | |
14984 | } | |
14985 | } | |
14986 | ||
fe3e1990 DJ |
14987 | /* Release all extra memory associated with OBJFILE. */ |
14988 | ||
14989 | void | |
14990 | dwarf2_free_objfile (struct objfile *objfile) | |
14991 | { | |
14992 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
14993 | ||
14994 | if (dwarf2_per_objfile == NULL) | |
14995 | return; | |
14996 | ||
14997 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
14998 | free_cached_comp_units (NULL); | |
14999 | ||
7b9f3c50 DE |
15000 | if (dwarf2_per_objfile->quick_file_names_table) |
15001 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 15002 | |
fe3e1990 DJ |
15003 | /* Everything else should be on the objfile obstack. */ |
15004 | } | |
15005 | ||
1c379e20 DJ |
15006 | /* A pair of DIE offset and GDB type pointer. We store these |
15007 | in a hash table separate from the DIEs, and preserve them | |
15008 | when the DIEs are flushed out of cache. */ | |
15009 | ||
15010 | struct dwarf2_offset_and_type | |
15011 | { | |
15012 | unsigned int offset; | |
15013 | struct type *type; | |
15014 | }; | |
15015 | ||
15016 | /* Hash function for a dwarf2_offset_and_type. */ | |
15017 | ||
15018 | static hashval_t | |
15019 | offset_and_type_hash (const void *item) | |
15020 | { | |
15021 | const struct dwarf2_offset_and_type *ofs = item; | |
9a619af0 | 15022 | |
1c379e20 DJ |
15023 | return ofs->offset; |
15024 | } | |
15025 | ||
15026 | /* Equality function for a dwarf2_offset_and_type. */ | |
15027 | ||
15028 | static int | |
15029 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
15030 | { | |
15031 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
15032 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 15033 | |
1c379e20 DJ |
15034 | return ofs_lhs->offset == ofs_rhs->offset; |
15035 | } | |
15036 | ||
15037 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
15038 | table if necessary. For convenience, return TYPE. |
15039 | ||
15040 | The DIEs reading must have careful ordering to: | |
15041 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
15042 | reading current DIE. | |
15043 | * Not trying to dereference contents of still incompletely read in types | |
15044 | while reading in other DIEs. | |
15045 | * Enable referencing still incompletely read in types just by a pointer to | |
15046 | the type without accessing its fields. | |
15047 | ||
15048 | Therefore caller should follow these rules: | |
15049 | * Try to fetch any prerequisite types we may need to build this DIE type | |
15050 | before building the type and calling set_die_type. | |
e71ec853 | 15051 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
15052 | possible before fetching more types to complete the current type. |
15053 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 15054 | |
f792889a | 15055 | static struct type * |
1c379e20 DJ |
15056 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
15057 | { | |
15058 | struct dwarf2_offset_and_type **slot, ofs; | |
673bfd45 DE |
15059 | struct objfile *objfile = cu->objfile; |
15060 | htab_t *type_hash_ptr; | |
1c379e20 | 15061 | |
b4ba55a1 JB |
15062 | /* For Ada types, make sure that the gnat-specific data is always |
15063 | initialized (if not already set). There are a few types where | |
15064 | we should not be doing so, because the type-specific area is | |
15065 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
15066 | where the type-specific area is used to store the floatformat). | |
15067 | But this is not a problem, because the gnat-specific information | |
15068 | is actually not needed for these types. */ | |
15069 | if (need_gnat_info (cu) | |
15070 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
15071 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
15072 | && !HAVE_GNAT_AUX_INFO (type)) | |
15073 | INIT_GNAT_SPECIFIC (type); | |
15074 | ||
673bfd45 DE |
15075 | if (cu->per_cu->from_debug_types) |
15076 | type_hash_ptr = &dwarf2_per_objfile->debug_types_type_hash; | |
15077 | else | |
15078 | type_hash_ptr = &dwarf2_per_objfile->debug_info_type_hash; | |
15079 | ||
15080 | if (*type_hash_ptr == NULL) | |
f792889a | 15081 | { |
673bfd45 DE |
15082 | *type_hash_ptr |
15083 | = htab_create_alloc_ex (127, | |
f792889a DJ |
15084 | offset_and_type_hash, |
15085 | offset_and_type_eq, | |
15086 | NULL, | |
673bfd45 | 15087 | &objfile->objfile_obstack, |
f792889a DJ |
15088 | hashtab_obstack_allocate, |
15089 | dummy_obstack_deallocate); | |
f792889a | 15090 | } |
1c379e20 DJ |
15091 | |
15092 | ofs.offset = die->offset; | |
15093 | ofs.type = type; | |
15094 | slot = (struct dwarf2_offset_and_type **) | |
673bfd45 | 15095 | htab_find_slot_with_hash (*type_hash_ptr, &ofs, ofs.offset, INSERT); |
7e314c57 JK |
15096 | if (*slot) |
15097 | complaint (&symfile_complaints, | |
15098 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
15099 | die->offset); | |
673bfd45 | 15100 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 15101 | **slot = ofs; |
f792889a | 15102 | return type; |
1c379e20 DJ |
15103 | } |
15104 | ||
673bfd45 DE |
15105 | /* Look up the type for the die at DIE_OFFSET in the appropriate type_hash |
15106 | table, or return NULL if the die does not have a saved type. */ | |
1c379e20 DJ |
15107 | |
15108 | static struct type * | |
673bfd45 DE |
15109 | get_die_type_at_offset (unsigned int offset, |
15110 | struct dwarf2_per_cu_data *per_cu) | |
1c379e20 DJ |
15111 | { |
15112 | struct dwarf2_offset_and_type *slot, ofs; | |
673bfd45 | 15113 | htab_t type_hash; |
f792889a | 15114 | |
673bfd45 DE |
15115 | if (per_cu->from_debug_types) |
15116 | type_hash = dwarf2_per_objfile->debug_types_type_hash; | |
15117 | else | |
15118 | type_hash = dwarf2_per_objfile->debug_info_type_hash; | |
f792889a DJ |
15119 | if (type_hash == NULL) |
15120 | return NULL; | |
1c379e20 | 15121 | |
673bfd45 | 15122 | ofs.offset = offset; |
1c379e20 DJ |
15123 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); |
15124 | if (slot) | |
15125 | return slot->type; | |
15126 | else | |
15127 | return NULL; | |
15128 | } | |
15129 | ||
673bfd45 DE |
15130 | /* Look up the type for DIE in the appropriate type_hash table, |
15131 | or return NULL if DIE does not have a saved type. */ | |
15132 | ||
15133 | static struct type * | |
15134 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
15135 | { | |
15136 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
15137 | } | |
15138 | ||
10b3939b DJ |
15139 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
15140 | ||
15141 | static void | |
15142 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
15143 | struct dwarf2_per_cu_data *ref_per_cu) | |
15144 | { | |
15145 | void **slot; | |
15146 | ||
15147 | if (cu->dependencies == NULL) | |
15148 | cu->dependencies | |
15149 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
15150 | NULL, &cu->comp_unit_obstack, | |
15151 | hashtab_obstack_allocate, | |
15152 | dummy_obstack_deallocate); | |
15153 | ||
15154 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
15155 | if (*slot == NULL) | |
15156 | *slot = ref_per_cu; | |
15157 | } | |
1c379e20 | 15158 | |
f504f079 DE |
15159 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
15160 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
15161 | cache that we must keep because we are keeping CU. */ |
15162 | ||
10b3939b DJ |
15163 | static int |
15164 | dwarf2_mark_helper (void **slot, void *data) | |
15165 | { | |
15166 | struct dwarf2_per_cu_data *per_cu; | |
15167 | ||
15168 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
15169 | if (per_cu->cu->mark) | |
15170 | return 1; | |
15171 | per_cu->cu->mark = 1; | |
15172 | ||
15173 | if (per_cu->cu->dependencies != NULL) | |
15174 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
15175 | ||
15176 | return 1; | |
15177 | } | |
15178 | ||
f504f079 DE |
15179 | /* Set the mark field in CU and in every other compilation unit in the |
15180 | cache that we must keep because we are keeping CU. */ | |
15181 | ||
ae038cb0 DJ |
15182 | static void |
15183 | dwarf2_mark (struct dwarf2_cu *cu) | |
15184 | { | |
15185 | if (cu->mark) | |
15186 | return; | |
15187 | cu->mark = 1; | |
10b3939b DJ |
15188 | if (cu->dependencies != NULL) |
15189 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
15190 | } |
15191 | ||
15192 | static void | |
15193 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
15194 | { | |
15195 | while (per_cu) | |
15196 | { | |
15197 | per_cu->cu->mark = 0; | |
15198 | per_cu = per_cu->cu->read_in_chain; | |
15199 | } | |
72bf9492 DJ |
15200 | } |
15201 | ||
72bf9492 DJ |
15202 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
15203 | is its offset in .debug_info for this objfile. */ | |
15204 | ||
15205 | static hashval_t | |
15206 | partial_die_hash (const void *item) | |
15207 | { | |
15208 | const struct partial_die_info *part_die = item; | |
9a619af0 | 15209 | |
72bf9492 DJ |
15210 | return part_die->offset; |
15211 | } | |
15212 | ||
15213 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
15214 | are equal if they have the same offset. */ | |
15215 | ||
15216 | static int | |
15217 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
15218 | { | |
15219 | const struct partial_die_info *part_die_lhs = item_lhs; | |
15220 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 15221 | |
72bf9492 DJ |
15222 | return part_die_lhs->offset == part_die_rhs->offset; |
15223 | } | |
15224 | ||
ae038cb0 DJ |
15225 | static struct cmd_list_element *set_dwarf2_cmdlist; |
15226 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
15227 | ||
15228 | static void | |
15229 | set_dwarf2_cmd (char *args, int from_tty) | |
15230 | { | |
15231 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
15232 | } | |
15233 | ||
15234 | static void | |
15235 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 15236 | { |
ae038cb0 DJ |
15237 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
15238 | } | |
15239 | ||
dce234bc PP |
15240 | /* If section described by INFO was mmapped, munmap it now. */ |
15241 | ||
15242 | static void | |
15243 | munmap_section_buffer (struct dwarf2_section_info *info) | |
15244 | { | |
15245 | if (info->was_mmapped) | |
15246 | { | |
15247 | #ifdef HAVE_MMAP | |
15248 | intptr_t begin = (intptr_t) info->buffer; | |
15249 | intptr_t map_begin = begin & ~(pagesize - 1); | |
15250 | size_t map_length = info->size + begin - map_begin; | |
9a619af0 | 15251 | |
dce234bc PP |
15252 | gdb_assert (munmap ((void *) map_begin, map_length) == 0); |
15253 | #else | |
15254 | /* Without HAVE_MMAP, we should never be here to begin with. */ | |
f3574227 | 15255 | gdb_assert_not_reached ("no mmap support"); |
dce234bc PP |
15256 | #endif |
15257 | } | |
15258 | } | |
15259 | ||
15260 | /* munmap debug sections for OBJFILE, if necessary. */ | |
15261 | ||
15262 | static void | |
c1bd65d0 | 15263 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
15264 | { |
15265 | struct dwarf2_per_objfile *data = d; | |
9a619af0 | 15266 | |
16be1145 DE |
15267 | /* This is sorted according to the order they're defined in to make it easier |
15268 | to keep in sync. */ | |
dce234bc PP |
15269 | munmap_section_buffer (&data->info); |
15270 | munmap_section_buffer (&data->abbrev); | |
15271 | munmap_section_buffer (&data->line); | |
16be1145 | 15272 | munmap_section_buffer (&data->loc); |
dce234bc | 15273 | munmap_section_buffer (&data->macinfo); |
16be1145 | 15274 | munmap_section_buffer (&data->str); |
dce234bc | 15275 | munmap_section_buffer (&data->ranges); |
16be1145 | 15276 | munmap_section_buffer (&data->types); |
dce234bc PP |
15277 | munmap_section_buffer (&data->frame); |
15278 | munmap_section_buffer (&data->eh_frame); | |
9291a0cd TT |
15279 | munmap_section_buffer (&data->gdb_index); |
15280 | } | |
15281 | ||
15282 | \f | |
ae2de4f8 | 15283 | /* The "save gdb-index" command. */ |
9291a0cd TT |
15284 | |
15285 | /* The contents of the hash table we create when building the string | |
15286 | table. */ | |
15287 | struct strtab_entry | |
15288 | { | |
15289 | offset_type offset; | |
15290 | const char *str; | |
15291 | }; | |
15292 | ||
559a7a62 JK |
15293 | /* Hash function for a strtab_entry. |
15294 | ||
15295 | Function is used only during write_hash_table so no index format backward | |
15296 | compatibility is needed. */ | |
b89be57b | 15297 | |
9291a0cd TT |
15298 | static hashval_t |
15299 | hash_strtab_entry (const void *e) | |
15300 | { | |
15301 | const struct strtab_entry *entry = e; | |
559a7a62 | 15302 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
15303 | } |
15304 | ||
15305 | /* Equality function for a strtab_entry. */ | |
b89be57b | 15306 | |
9291a0cd TT |
15307 | static int |
15308 | eq_strtab_entry (const void *a, const void *b) | |
15309 | { | |
15310 | const struct strtab_entry *ea = a; | |
15311 | const struct strtab_entry *eb = b; | |
15312 | return !strcmp (ea->str, eb->str); | |
15313 | } | |
15314 | ||
15315 | /* Create a strtab_entry hash table. */ | |
b89be57b | 15316 | |
9291a0cd TT |
15317 | static htab_t |
15318 | create_strtab (void) | |
15319 | { | |
15320 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
15321 | xfree, xcalloc, xfree); | |
15322 | } | |
15323 | ||
15324 | /* Add a string to the constant pool. Return the string's offset in | |
15325 | host order. */ | |
b89be57b | 15326 | |
9291a0cd TT |
15327 | static offset_type |
15328 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
15329 | { | |
15330 | void **slot; | |
15331 | struct strtab_entry entry; | |
15332 | struct strtab_entry *result; | |
15333 | ||
15334 | entry.str = str; | |
15335 | slot = htab_find_slot (table, &entry, INSERT); | |
15336 | if (*slot) | |
15337 | result = *slot; | |
15338 | else | |
15339 | { | |
15340 | result = XNEW (struct strtab_entry); | |
15341 | result->offset = obstack_object_size (cpool); | |
15342 | result->str = str; | |
15343 | obstack_grow_str0 (cpool, str); | |
15344 | *slot = result; | |
15345 | } | |
15346 | return result->offset; | |
15347 | } | |
15348 | ||
15349 | /* An entry in the symbol table. */ | |
15350 | struct symtab_index_entry | |
15351 | { | |
15352 | /* The name of the symbol. */ | |
15353 | const char *name; | |
15354 | /* The offset of the name in the constant pool. */ | |
15355 | offset_type index_offset; | |
15356 | /* A sorted vector of the indices of all the CUs that hold an object | |
15357 | of this name. */ | |
15358 | VEC (offset_type) *cu_indices; | |
15359 | }; | |
15360 | ||
15361 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
15362 | struct mapped_symtab | |
15363 | { | |
15364 | offset_type n_elements; | |
15365 | offset_type size; | |
15366 | struct symtab_index_entry **data; | |
15367 | }; | |
15368 | ||
15369 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 15370 | |
9291a0cd TT |
15371 | static hashval_t |
15372 | hash_symtab_entry (const void *e) | |
15373 | { | |
15374 | const struct symtab_index_entry *entry = e; | |
15375 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
15376 | sizeof (offset_type) * VEC_length (offset_type, | |
15377 | entry->cu_indices), | |
15378 | 0); | |
15379 | } | |
15380 | ||
15381 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 15382 | |
9291a0cd TT |
15383 | static int |
15384 | eq_symtab_entry (const void *a, const void *b) | |
15385 | { | |
15386 | const struct symtab_index_entry *ea = a; | |
15387 | const struct symtab_index_entry *eb = b; | |
15388 | int len = VEC_length (offset_type, ea->cu_indices); | |
15389 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
15390 | return 0; | |
15391 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
15392 | VEC_address (offset_type, eb->cu_indices), | |
15393 | sizeof (offset_type) * len); | |
15394 | } | |
15395 | ||
15396 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 15397 | |
9291a0cd TT |
15398 | static void |
15399 | delete_symtab_entry (void *p) | |
15400 | { | |
15401 | struct symtab_index_entry *entry = p; | |
15402 | VEC_free (offset_type, entry->cu_indices); | |
15403 | xfree (entry); | |
15404 | } | |
15405 | ||
15406 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 15407 | |
9291a0cd | 15408 | static htab_t |
3876f04e | 15409 | create_symbol_hash_table (void) |
9291a0cd TT |
15410 | { |
15411 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
15412 | delete_symtab_entry, xcalloc, xfree); | |
15413 | } | |
15414 | ||
15415 | /* Create a new mapped symtab object. */ | |
b89be57b | 15416 | |
9291a0cd TT |
15417 | static struct mapped_symtab * |
15418 | create_mapped_symtab (void) | |
15419 | { | |
15420 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
15421 | symtab->n_elements = 0; | |
15422 | symtab->size = 1024; | |
15423 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
15424 | return symtab; | |
15425 | } | |
15426 | ||
15427 | /* Destroy a mapped_symtab. */ | |
b89be57b | 15428 | |
9291a0cd TT |
15429 | static void |
15430 | cleanup_mapped_symtab (void *p) | |
15431 | { | |
15432 | struct mapped_symtab *symtab = p; | |
15433 | /* The contents of the array are freed when the other hash table is | |
15434 | destroyed. */ | |
15435 | xfree (symtab->data); | |
15436 | xfree (symtab); | |
15437 | } | |
15438 | ||
15439 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
15440 | the slot. |
15441 | ||
15442 | Function is used only during write_hash_table so no index format backward | |
15443 | compatibility is needed. */ | |
b89be57b | 15444 | |
9291a0cd TT |
15445 | static struct symtab_index_entry ** |
15446 | find_slot (struct mapped_symtab *symtab, const char *name) | |
15447 | { | |
559a7a62 | 15448 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
15449 | |
15450 | index = hash & (symtab->size - 1); | |
15451 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
15452 | ||
15453 | for (;;) | |
15454 | { | |
15455 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
15456 | return &symtab->data[index]; | |
15457 | index = (index + step) & (symtab->size - 1); | |
15458 | } | |
15459 | } | |
15460 | ||
15461 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 15462 | |
9291a0cd TT |
15463 | static void |
15464 | hash_expand (struct mapped_symtab *symtab) | |
15465 | { | |
15466 | offset_type old_size = symtab->size; | |
15467 | offset_type i; | |
15468 | struct symtab_index_entry **old_entries = symtab->data; | |
15469 | ||
15470 | symtab->size *= 2; | |
15471 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
15472 | ||
15473 | for (i = 0; i < old_size; ++i) | |
15474 | { | |
15475 | if (old_entries[i]) | |
15476 | { | |
15477 | struct symtab_index_entry **slot = find_slot (symtab, | |
15478 | old_entries[i]->name); | |
15479 | *slot = old_entries[i]; | |
15480 | } | |
15481 | } | |
15482 | ||
15483 | xfree (old_entries); | |
15484 | } | |
15485 | ||
15486 | /* Add an entry to SYMTAB. NAME is the name of the symbol. CU_INDEX | |
15487 | is the index of the CU in which the symbol appears. */ | |
b89be57b | 15488 | |
9291a0cd TT |
15489 | static void |
15490 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
15491 | offset_type cu_index) | |
15492 | { | |
15493 | struct symtab_index_entry **slot; | |
15494 | ||
15495 | ++symtab->n_elements; | |
15496 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
15497 | hash_expand (symtab); | |
15498 | ||
15499 | slot = find_slot (symtab, name); | |
15500 | if (!*slot) | |
15501 | { | |
15502 | *slot = XNEW (struct symtab_index_entry); | |
15503 | (*slot)->name = name; | |
15504 | (*slot)->cu_indices = NULL; | |
15505 | } | |
15506 | /* Don't push an index twice. Due to how we add entries we only | |
15507 | have to check the last one. */ | |
15508 | if (VEC_empty (offset_type, (*slot)->cu_indices) | |
cf31e6f9 | 15509 | || VEC_last (offset_type, (*slot)->cu_indices) != cu_index) |
9291a0cd TT |
15510 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index); |
15511 | } | |
15512 | ||
15513 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 15514 | |
9291a0cd | 15515 | static offset_type |
3876f04e | 15516 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
15517 | struct symtab_index_entry *entry) |
15518 | { | |
15519 | void **slot; | |
15520 | ||
3876f04e | 15521 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
15522 | if (!*slot) |
15523 | { | |
15524 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
15525 | offset_type val = MAYBE_SWAP (len); | |
15526 | offset_type iter; | |
15527 | int i; | |
15528 | ||
15529 | *slot = entry; | |
15530 | entry->index_offset = obstack_object_size (cpool); | |
15531 | ||
15532 | obstack_grow (cpool, &val, sizeof (val)); | |
15533 | for (i = 0; | |
15534 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
15535 | ++i) | |
15536 | { | |
15537 | val = MAYBE_SWAP (iter); | |
15538 | obstack_grow (cpool, &val, sizeof (val)); | |
15539 | } | |
15540 | } | |
15541 | else | |
15542 | { | |
15543 | struct symtab_index_entry *old_entry = *slot; | |
15544 | entry->index_offset = old_entry->index_offset; | |
15545 | entry = old_entry; | |
15546 | } | |
15547 | return entry->index_offset; | |
15548 | } | |
15549 | ||
15550 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
15551 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 15552 | |
9291a0cd TT |
15553 | static void |
15554 | write_hash_table (struct mapped_symtab *symtab, | |
15555 | struct obstack *output, struct obstack *cpool) | |
15556 | { | |
15557 | offset_type i; | |
3876f04e | 15558 | htab_t symbol_hash_table; |
9291a0cd TT |
15559 | htab_t str_table; |
15560 | ||
3876f04e | 15561 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 15562 | str_table = create_strtab (); |
3876f04e | 15563 | |
9291a0cd TT |
15564 | /* We add all the index vectors to the constant pool first, to |
15565 | ensure alignment is ok. */ | |
15566 | for (i = 0; i < symtab->size; ++i) | |
15567 | { | |
15568 | if (symtab->data[i]) | |
3876f04e | 15569 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
15570 | } |
15571 | ||
15572 | /* Now write out the hash table. */ | |
15573 | for (i = 0; i < symtab->size; ++i) | |
15574 | { | |
15575 | offset_type str_off, vec_off; | |
15576 | ||
15577 | if (symtab->data[i]) | |
15578 | { | |
15579 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
15580 | vec_off = symtab->data[i]->index_offset; | |
15581 | } | |
15582 | else | |
15583 | { | |
15584 | /* While 0 is a valid constant pool index, it is not valid | |
15585 | to have 0 for both offsets. */ | |
15586 | str_off = 0; | |
15587 | vec_off = 0; | |
15588 | } | |
15589 | ||
15590 | str_off = MAYBE_SWAP (str_off); | |
15591 | vec_off = MAYBE_SWAP (vec_off); | |
15592 | ||
15593 | obstack_grow (output, &str_off, sizeof (str_off)); | |
15594 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
15595 | } | |
15596 | ||
15597 | htab_delete (str_table); | |
3876f04e | 15598 | htab_delete (symbol_hash_table); |
9291a0cd TT |
15599 | } |
15600 | ||
0a5429f6 DE |
15601 | /* Struct to map psymtab to CU index in the index file. */ |
15602 | struct psymtab_cu_index_map | |
15603 | { | |
15604 | struct partial_symtab *psymtab; | |
15605 | unsigned int cu_index; | |
15606 | }; | |
15607 | ||
15608 | static hashval_t | |
15609 | hash_psymtab_cu_index (const void *item) | |
15610 | { | |
15611 | const struct psymtab_cu_index_map *map = item; | |
15612 | ||
15613 | return htab_hash_pointer (map->psymtab); | |
15614 | } | |
15615 | ||
15616 | static int | |
15617 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
15618 | { | |
15619 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
15620 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
15621 | ||
15622 | return lhs->psymtab == rhs->psymtab; | |
15623 | } | |
15624 | ||
15625 | /* Helper struct for building the address table. */ | |
15626 | struct addrmap_index_data | |
15627 | { | |
15628 | struct objfile *objfile; | |
15629 | struct obstack *addr_obstack; | |
15630 | htab_t cu_index_htab; | |
15631 | ||
15632 | /* Non-zero if the previous_* fields are valid. | |
15633 | We can't write an entry until we see the next entry (since it is only then | |
15634 | that we know the end of the entry). */ | |
15635 | int previous_valid; | |
15636 | /* Index of the CU in the table of all CUs in the index file. */ | |
15637 | unsigned int previous_cu_index; | |
0963b4bd | 15638 | /* Start address of the CU. */ |
0a5429f6 DE |
15639 | CORE_ADDR previous_cu_start; |
15640 | }; | |
15641 | ||
15642 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 15643 | |
9291a0cd | 15644 | static void |
0a5429f6 DE |
15645 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
15646 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 15647 | { |
0a5429f6 | 15648 | offset_type cu_index_to_write; |
9291a0cd TT |
15649 | char addr[8]; |
15650 | CORE_ADDR baseaddr; | |
15651 | ||
15652 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
15653 | ||
0a5429f6 DE |
15654 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
15655 | obstack_grow (obstack, addr, 8); | |
15656 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
15657 | obstack_grow (obstack, addr, 8); | |
15658 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
15659 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
15660 | } | |
15661 | ||
15662 | /* Worker function for traversing an addrmap to build the address table. */ | |
15663 | ||
15664 | static int | |
15665 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
15666 | { | |
15667 | struct addrmap_index_data *data = datap; | |
15668 | struct partial_symtab *pst = obj; | |
15669 | offset_type cu_index; | |
15670 | void **slot; | |
15671 | ||
15672 | if (data->previous_valid) | |
15673 | add_address_entry (data->objfile, data->addr_obstack, | |
15674 | data->previous_cu_start, start_addr, | |
15675 | data->previous_cu_index); | |
15676 | ||
15677 | data->previous_cu_start = start_addr; | |
15678 | if (pst != NULL) | |
15679 | { | |
15680 | struct psymtab_cu_index_map find_map, *map; | |
15681 | find_map.psymtab = pst; | |
15682 | map = htab_find (data->cu_index_htab, &find_map); | |
15683 | gdb_assert (map != NULL); | |
15684 | data->previous_cu_index = map->cu_index; | |
15685 | data->previous_valid = 1; | |
15686 | } | |
15687 | else | |
15688 | data->previous_valid = 0; | |
15689 | ||
15690 | return 0; | |
15691 | } | |
15692 | ||
15693 | /* Write OBJFILE's address map to OBSTACK. | |
15694 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
15695 | in the index file. */ | |
15696 | ||
15697 | static void | |
15698 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
15699 | htab_t cu_index_htab) | |
15700 | { | |
15701 | struct addrmap_index_data addrmap_index_data; | |
15702 | ||
15703 | /* When writing the address table, we have to cope with the fact that | |
15704 | the addrmap iterator only provides the start of a region; we have to | |
15705 | wait until the next invocation to get the start of the next region. */ | |
15706 | ||
15707 | addrmap_index_data.objfile = objfile; | |
15708 | addrmap_index_data.addr_obstack = obstack; | |
15709 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
15710 | addrmap_index_data.previous_valid = 0; | |
15711 | ||
15712 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
15713 | &addrmap_index_data); | |
15714 | ||
15715 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
15716 | is valid, but we should still handle it. | |
15717 | The end address is recorded as the start of the next region, but that | |
15718 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
15719 | anyway. */ | |
15720 | if (addrmap_index_data.previous_valid) | |
15721 | add_address_entry (objfile, obstack, | |
15722 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
15723 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
15724 | } |
15725 | ||
15726 | /* Add a list of partial symbols to SYMTAB. */ | |
b89be57b | 15727 | |
9291a0cd TT |
15728 | static void |
15729 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 15730 | htab_t psyms_seen, |
9291a0cd TT |
15731 | struct partial_symbol **psymp, |
15732 | int count, | |
987d643c TT |
15733 | offset_type cu_index, |
15734 | int is_static) | |
9291a0cd TT |
15735 | { |
15736 | for (; count-- > 0; ++psymp) | |
15737 | { | |
987d643c TT |
15738 | void **slot, *lookup; |
15739 | ||
9291a0cd TT |
15740 | if (SYMBOL_LANGUAGE (*psymp) == language_ada) |
15741 | error (_("Ada is not currently supported by the index")); | |
987d643c TT |
15742 | |
15743 | /* We only want to add a given psymbol once. However, we also | |
15744 | want to account for whether it is global or static. So, we | |
15745 | may add it twice, using slightly different values. */ | |
15746 | if (is_static) | |
15747 | { | |
15748 | uintptr_t val = 1 | (uintptr_t) *psymp; | |
15749 | ||
15750 | lookup = (void *) val; | |
15751 | } | |
15752 | else | |
15753 | lookup = *psymp; | |
15754 | ||
15755 | /* Only add a given psymbol once. */ | |
15756 | slot = htab_find_slot (psyms_seen, lookup, INSERT); | |
15757 | if (!*slot) | |
15758 | { | |
15759 | *slot = lookup; | |
15760 | add_index_entry (symtab, SYMBOL_NATURAL_NAME (*psymp), cu_index); | |
15761 | } | |
9291a0cd TT |
15762 | } |
15763 | } | |
15764 | ||
15765 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
15766 | exception if there is an error. */ | |
b89be57b | 15767 | |
9291a0cd TT |
15768 | static void |
15769 | write_obstack (FILE *file, struct obstack *obstack) | |
15770 | { | |
15771 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
15772 | file) | |
15773 | != obstack_object_size (obstack)) | |
15774 | error (_("couldn't data write to file")); | |
15775 | } | |
15776 | ||
15777 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 15778 | |
9291a0cd TT |
15779 | static void |
15780 | unlink_if_set (void *p) | |
15781 | { | |
15782 | char **filename = p; | |
15783 | if (*filename) | |
15784 | unlink (*filename); | |
15785 | } | |
15786 | ||
1fd400ff TT |
15787 | /* A helper struct used when iterating over debug_types. */ |
15788 | struct signatured_type_index_data | |
15789 | { | |
15790 | struct objfile *objfile; | |
15791 | struct mapped_symtab *symtab; | |
15792 | struct obstack *types_list; | |
987d643c | 15793 | htab_t psyms_seen; |
1fd400ff TT |
15794 | int cu_index; |
15795 | }; | |
15796 | ||
15797 | /* A helper function that writes a single signatured_type to an | |
15798 | obstack. */ | |
b89be57b | 15799 | |
1fd400ff TT |
15800 | static int |
15801 | write_one_signatured_type (void **slot, void *d) | |
15802 | { | |
15803 | struct signatured_type_index_data *info = d; | |
15804 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
e254ef6a DE |
15805 | struct dwarf2_per_cu_data *per_cu = &entry->per_cu; |
15806 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
1fd400ff TT |
15807 | gdb_byte val[8]; |
15808 | ||
15809 | write_psymbols (info->symtab, | |
987d643c | 15810 | info->psyms_seen, |
3e43a32a MS |
15811 | info->objfile->global_psymbols.list |
15812 | + psymtab->globals_offset, | |
987d643c TT |
15813 | psymtab->n_global_syms, info->cu_index, |
15814 | 0); | |
1fd400ff | 15815 | write_psymbols (info->symtab, |
987d643c | 15816 | info->psyms_seen, |
3e43a32a MS |
15817 | info->objfile->static_psymbols.list |
15818 | + psymtab->statics_offset, | |
987d643c TT |
15819 | psymtab->n_static_syms, info->cu_index, |
15820 | 1); | |
1fd400ff TT |
15821 | |
15822 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->offset); | |
15823 | obstack_grow (info->types_list, val, 8); | |
15824 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->type_offset); | |
15825 | obstack_grow (info->types_list, val, 8); | |
15826 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
15827 | obstack_grow (info->types_list, val, 8); | |
15828 | ||
15829 | ++info->cu_index; | |
15830 | ||
15831 | return 1; | |
15832 | } | |
15833 | ||
987d643c TT |
15834 | /* A cleanup function for an htab_t. */ |
15835 | ||
15836 | static void | |
15837 | cleanup_htab (void *arg) | |
15838 | { | |
15839 | htab_delete (arg); | |
15840 | } | |
15841 | ||
9291a0cd | 15842 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 15843 | |
9291a0cd TT |
15844 | static void |
15845 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
15846 | { | |
15847 | struct cleanup *cleanup; | |
15848 | char *filename, *cleanup_filename; | |
1fd400ff TT |
15849 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
15850 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
15851 | int i; |
15852 | FILE *out_file; | |
15853 | struct mapped_symtab *symtab; | |
15854 | offset_type val, size_of_contents, total_len; | |
15855 | struct stat st; | |
15856 | char buf[8]; | |
987d643c | 15857 | htab_t psyms_seen; |
0a5429f6 DE |
15858 | htab_t cu_index_htab; |
15859 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 15860 | |
b4f2f049 | 15861 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
9291a0cd | 15862 | return; |
b4f2f049 | 15863 | |
9291a0cd TT |
15864 | if (dwarf2_per_objfile->using_index) |
15865 | error (_("Cannot use an index to create the index")); | |
15866 | ||
15867 | if (stat (objfile->name, &st) < 0) | |
7e17e088 | 15868 | perror_with_name (objfile->name); |
9291a0cd TT |
15869 | |
15870 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
15871 | INDEX_SUFFIX, (char *) NULL); | |
15872 | cleanup = make_cleanup (xfree, filename); | |
15873 | ||
15874 | out_file = fopen (filename, "wb"); | |
15875 | if (!out_file) | |
15876 | error (_("Can't open `%s' for writing"), filename); | |
15877 | ||
15878 | cleanup_filename = filename; | |
15879 | make_cleanup (unlink_if_set, &cleanup_filename); | |
15880 | ||
15881 | symtab = create_mapped_symtab (); | |
15882 | make_cleanup (cleanup_mapped_symtab, symtab); | |
15883 | ||
15884 | obstack_init (&addr_obstack); | |
15885 | make_cleanup_obstack_free (&addr_obstack); | |
15886 | ||
15887 | obstack_init (&cu_list); | |
15888 | make_cleanup_obstack_free (&cu_list); | |
15889 | ||
1fd400ff TT |
15890 | obstack_init (&types_cu_list); |
15891 | make_cleanup_obstack_free (&types_cu_list); | |
15892 | ||
987d643c TT |
15893 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
15894 | NULL, xcalloc, xfree); | |
15895 | make_cleanup (cleanup_htab, psyms_seen); | |
15896 | ||
0a5429f6 DE |
15897 | /* While we're scanning CU's create a table that maps a psymtab pointer |
15898 | (which is what addrmap records) to its index (which is what is recorded | |
15899 | in the index file). This will later be needed to write the address | |
15900 | table. */ | |
15901 | cu_index_htab = htab_create_alloc (100, | |
15902 | hash_psymtab_cu_index, | |
15903 | eq_psymtab_cu_index, | |
15904 | NULL, xcalloc, xfree); | |
15905 | make_cleanup (cleanup_htab, cu_index_htab); | |
15906 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) | |
15907 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
15908 | * dwarf2_per_objfile->n_comp_units); | |
15909 | make_cleanup (xfree, psymtab_cu_index_map); | |
15910 | ||
15911 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
15912 | work here. Also, the debug_types entries do not appear in |
15913 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
15914 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
15915 | { | |
3e43a32a MS |
15916 | struct dwarf2_per_cu_data *per_cu |
15917 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 15918 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 15919 | gdb_byte val[8]; |
0a5429f6 DE |
15920 | struct psymtab_cu_index_map *map; |
15921 | void **slot; | |
9291a0cd TT |
15922 | |
15923 | write_psymbols (symtab, | |
987d643c | 15924 | psyms_seen, |
9291a0cd | 15925 | objfile->global_psymbols.list + psymtab->globals_offset, |
987d643c TT |
15926 | psymtab->n_global_syms, i, |
15927 | 0); | |
9291a0cd | 15928 | write_psymbols (symtab, |
987d643c | 15929 | psyms_seen, |
9291a0cd | 15930 | objfile->static_psymbols.list + psymtab->statics_offset, |
987d643c TT |
15931 | psymtab->n_static_syms, i, |
15932 | 1); | |
9291a0cd | 15933 | |
0a5429f6 DE |
15934 | map = &psymtab_cu_index_map[i]; |
15935 | map->psymtab = psymtab; | |
15936 | map->cu_index = i; | |
15937 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
15938 | gdb_assert (slot != NULL); | |
15939 | gdb_assert (*slot == NULL); | |
15940 | *slot = map; | |
9291a0cd | 15941 | |
e254ef6a | 15942 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->offset); |
9291a0cd | 15943 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 15944 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
15945 | obstack_grow (&cu_list, val, 8); |
15946 | } | |
15947 | ||
0a5429f6 DE |
15948 | /* Dump the address map. */ |
15949 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
15950 | ||
1fd400ff TT |
15951 | /* Write out the .debug_type entries, if any. */ |
15952 | if (dwarf2_per_objfile->signatured_types) | |
15953 | { | |
15954 | struct signatured_type_index_data sig_data; | |
15955 | ||
15956 | sig_data.objfile = objfile; | |
15957 | sig_data.symtab = symtab; | |
15958 | sig_data.types_list = &types_cu_list; | |
987d643c | 15959 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
15960 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
15961 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
15962 | write_one_signatured_type, &sig_data); | |
15963 | } | |
15964 | ||
9291a0cd TT |
15965 | obstack_init (&constant_pool); |
15966 | make_cleanup_obstack_free (&constant_pool); | |
15967 | obstack_init (&symtab_obstack); | |
15968 | make_cleanup_obstack_free (&symtab_obstack); | |
15969 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
15970 | ||
15971 | obstack_init (&contents); | |
15972 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 15973 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
15974 | total_len = size_of_contents; |
15975 | ||
15976 | /* The version number. */ | |
559a7a62 | 15977 | val = MAYBE_SWAP (5); |
9291a0cd TT |
15978 | obstack_grow (&contents, &val, sizeof (val)); |
15979 | ||
15980 | /* The offset of the CU list from the start of the file. */ | |
15981 | val = MAYBE_SWAP (total_len); | |
15982 | obstack_grow (&contents, &val, sizeof (val)); | |
15983 | total_len += obstack_object_size (&cu_list); | |
15984 | ||
1fd400ff TT |
15985 | /* The offset of the types CU list from the start of the file. */ |
15986 | val = MAYBE_SWAP (total_len); | |
15987 | obstack_grow (&contents, &val, sizeof (val)); | |
15988 | total_len += obstack_object_size (&types_cu_list); | |
15989 | ||
9291a0cd TT |
15990 | /* The offset of the address table from the start of the file. */ |
15991 | val = MAYBE_SWAP (total_len); | |
15992 | obstack_grow (&contents, &val, sizeof (val)); | |
15993 | total_len += obstack_object_size (&addr_obstack); | |
15994 | ||
15995 | /* The offset of the symbol table from the start of the file. */ | |
15996 | val = MAYBE_SWAP (total_len); | |
15997 | obstack_grow (&contents, &val, sizeof (val)); | |
15998 | total_len += obstack_object_size (&symtab_obstack); | |
15999 | ||
16000 | /* The offset of the constant pool from the start of the file. */ | |
16001 | val = MAYBE_SWAP (total_len); | |
16002 | obstack_grow (&contents, &val, sizeof (val)); | |
16003 | total_len += obstack_object_size (&constant_pool); | |
16004 | ||
16005 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
16006 | ||
16007 | write_obstack (out_file, &contents); | |
16008 | write_obstack (out_file, &cu_list); | |
1fd400ff | 16009 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
16010 | write_obstack (out_file, &addr_obstack); |
16011 | write_obstack (out_file, &symtab_obstack); | |
16012 | write_obstack (out_file, &constant_pool); | |
16013 | ||
16014 | fclose (out_file); | |
16015 | ||
16016 | /* We want to keep the file, so we set cleanup_filename to NULL | |
16017 | here. See unlink_if_set. */ | |
16018 | cleanup_filename = NULL; | |
16019 | ||
16020 | do_cleanups (cleanup); | |
16021 | } | |
16022 | ||
90476074 TT |
16023 | /* Implementation of the `save gdb-index' command. |
16024 | ||
16025 | Note that the file format used by this command is documented in the | |
16026 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 16027 | |
9291a0cd TT |
16028 | static void |
16029 | save_gdb_index_command (char *arg, int from_tty) | |
16030 | { | |
16031 | struct objfile *objfile; | |
16032 | ||
16033 | if (!arg || !*arg) | |
96d19272 | 16034 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
16035 | |
16036 | ALL_OBJFILES (objfile) | |
16037 | { | |
16038 | struct stat st; | |
16039 | ||
16040 | /* If the objfile does not correspond to an actual file, skip it. */ | |
16041 | if (stat (objfile->name, &st) < 0) | |
16042 | continue; | |
16043 | ||
16044 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
16045 | if (dwarf2_per_objfile) | |
16046 | { | |
16047 | volatile struct gdb_exception except; | |
16048 | ||
16049 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
16050 | { | |
16051 | write_psymtabs_to_index (objfile, arg); | |
16052 | } | |
16053 | if (except.reason < 0) | |
16054 | exception_fprintf (gdb_stderr, except, | |
16055 | _("Error while writing index for `%s': "), | |
16056 | objfile->name); | |
16057 | } | |
16058 | } | |
dce234bc PP |
16059 | } |
16060 | ||
9291a0cd TT |
16061 | \f |
16062 | ||
9eae7c52 TT |
16063 | int dwarf2_always_disassemble; |
16064 | ||
16065 | static void | |
16066 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
16067 | struct cmd_list_element *c, const char *value) | |
16068 | { | |
3e43a32a MS |
16069 | fprintf_filtered (file, |
16070 | _("Whether to always disassemble " | |
16071 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
16072 | value); |
16073 | } | |
16074 | ||
6502dd73 DJ |
16075 | void _initialize_dwarf2_read (void); |
16076 | ||
16077 | void | |
16078 | _initialize_dwarf2_read (void) | |
16079 | { | |
96d19272 JK |
16080 | struct cmd_list_element *c; |
16081 | ||
dce234bc | 16082 | dwarf2_objfile_data_key |
c1bd65d0 | 16083 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 16084 | |
1bedd215 AC |
16085 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
16086 | Set DWARF 2 specific variables.\n\ | |
16087 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
16088 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
16089 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
16090 | ||
1bedd215 AC |
16091 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
16092 | Show DWARF 2 specific variables\n\ | |
16093 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
16094 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
16095 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
16096 | ||
16097 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
16098 | &dwarf2_max_cache_age, _("\ |
16099 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
16100 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
16101 | A higher limit means that cached compilation units will be stored\n\ | |
16102 | in memory longer, and more total memory will be used. Zero disables\n\ | |
16103 | caching, which can slow down startup."), | |
2c5b56ce | 16104 | NULL, |
920d2a44 | 16105 | show_dwarf2_max_cache_age, |
2c5b56ce | 16106 | &set_dwarf2_cmdlist, |
ae038cb0 | 16107 | &show_dwarf2_cmdlist); |
d97bc12b | 16108 | |
9eae7c52 TT |
16109 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
16110 | &dwarf2_always_disassemble, _("\ | |
16111 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
16112 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
16113 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
16114 | syntax. When disabled, expressions will be printed in a more\n\ | |
16115 | conversational style, when possible."), | |
16116 | NULL, | |
16117 | show_dwarf2_always_disassemble, | |
16118 | &set_dwarf2_cmdlist, | |
16119 | &show_dwarf2_cmdlist); | |
16120 | ||
d97bc12b DE |
16121 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
16122 | Set debugging of the dwarf2 DIE reader."), _("\ | |
16123 | Show debugging of the dwarf2 DIE reader."), _("\ | |
16124 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
16125 | The value is the maximum depth to print."), | |
16126 | NULL, | |
16127 | NULL, | |
16128 | &setdebuglist, &showdebuglist); | |
9291a0cd | 16129 | |
96d19272 | 16130 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 16131 | _("\ |
fc1a9d6e | 16132 | Save a gdb-index file.\n\ |
11570e71 | 16133 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
16134 | &save_cmdlist); |
16135 | set_cmd_completer (c, filename_completer); | |
6502dd73 | 16136 | } |