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 | ||
900e11f9 JK |
122 | /* When non-zero, cross-check physname against demangler. */ |
123 | static int check_physname = 0; | |
124 | ||
dce234bc PP |
125 | static int pagesize; |
126 | ||
df8a16a1 DJ |
127 | /* When set, the file that we're processing is known to have debugging |
128 | info for C++ namespaces. GCC 3.3.x did not produce this information, | |
129 | but later versions do. */ | |
130 | ||
131 | static int processing_has_namespace_info; | |
132 | ||
6502dd73 DJ |
133 | static const struct objfile_data *dwarf2_objfile_data_key; |
134 | ||
dce234bc PP |
135 | struct dwarf2_section_info |
136 | { | |
137 | asection *asection; | |
138 | gdb_byte *buffer; | |
139 | bfd_size_type size; | |
b315ab21 TG |
140 | /* Not NULL if the section was actually mmapped. */ |
141 | void *map_addr; | |
142 | /* Page aligned size of mmapped area. */ | |
143 | bfd_size_type map_len; | |
be391dca TT |
144 | /* True if we have tried to read this section. */ |
145 | int readin; | |
dce234bc PP |
146 | }; |
147 | ||
9291a0cd TT |
148 | /* All offsets in the index are of this type. It must be |
149 | architecture-independent. */ | |
150 | typedef uint32_t offset_type; | |
151 | ||
152 | DEF_VEC_I (offset_type); | |
153 | ||
154 | /* A description of the mapped index. The file format is described in | |
155 | a comment by the code that writes the index. */ | |
156 | struct mapped_index | |
157 | { | |
559a7a62 JK |
158 | /* Index data format version. */ |
159 | int version; | |
160 | ||
9291a0cd TT |
161 | /* The total length of the buffer. */ |
162 | off_t total_size; | |
b11b1f88 | 163 | |
9291a0cd TT |
164 | /* A pointer to the address table data. */ |
165 | const gdb_byte *address_table; | |
b11b1f88 | 166 | |
9291a0cd TT |
167 | /* Size of the address table data in bytes. */ |
168 | offset_type address_table_size; | |
b11b1f88 | 169 | |
3876f04e DE |
170 | /* The symbol table, implemented as a hash table. */ |
171 | const offset_type *symbol_table; | |
b11b1f88 | 172 | |
9291a0cd | 173 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 174 | offset_type symbol_table_slots; |
b11b1f88 | 175 | |
9291a0cd TT |
176 | /* A pointer to the constant pool. */ |
177 | const char *constant_pool; | |
178 | }; | |
179 | ||
6502dd73 DJ |
180 | struct dwarf2_per_objfile |
181 | { | |
dce234bc PP |
182 | struct dwarf2_section_info info; |
183 | struct dwarf2_section_info abbrev; | |
184 | struct dwarf2_section_info line; | |
dce234bc PP |
185 | struct dwarf2_section_info loc; |
186 | struct dwarf2_section_info macinfo; | |
187 | struct dwarf2_section_info str; | |
188 | struct dwarf2_section_info ranges; | |
348e048f | 189 | struct dwarf2_section_info types; |
dce234bc PP |
190 | struct dwarf2_section_info frame; |
191 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 192 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 193 | |
be391dca TT |
194 | /* Back link. */ |
195 | struct objfile *objfile; | |
196 | ||
10b3939b DJ |
197 | /* A list of all the compilation units. This is used to locate |
198 | the target compilation unit of a particular reference. */ | |
ae038cb0 DJ |
199 | struct dwarf2_per_cu_data **all_comp_units; |
200 | ||
201 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
202 | int n_comp_units; | |
203 | ||
1fd400ff TT |
204 | /* The number of .debug_types-related CUs. */ |
205 | int n_type_comp_units; | |
206 | ||
207 | /* The .debug_types-related CUs. */ | |
208 | struct dwarf2_per_cu_data **type_comp_units; | |
209 | ||
ae038cb0 DJ |
210 | /* A chain of compilation units that are currently read in, so that |
211 | they can be freed later. */ | |
212 | struct dwarf2_per_cu_data *read_in_chain; | |
72dca2f5 | 213 | |
348e048f DE |
214 | /* A table mapping .debug_types signatures to its signatured_type entry. |
215 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
216 | htab_t signatured_types; | |
217 | ||
72dca2f5 FR |
218 | /* A flag indicating wether this objfile has a section loaded at a |
219 | VMA of 0. */ | |
220 | int has_section_at_zero; | |
9291a0cd | 221 | |
ae2de4f8 DE |
222 | /* True if we are using the mapped index, |
223 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
224 | unsigned char using_index; |
225 | ||
ae2de4f8 | 226 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 227 | struct mapped_index *index_table; |
98bfdba5 | 228 | |
7b9f3c50 DE |
229 | /* When using index_table, this keeps track of all quick_file_names entries. |
230 | TUs can share line table entries with CUs or other TUs, and there can be | |
231 | a lot more TUs than unique line tables, so we maintain a separate table | |
232 | of all line table entries to support the sharing. */ | |
233 | htab_t quick_file_names_table; | |
234 | ||
98bfdba5 PA |
235 | /* Set during partial symbol reading, to prevent queueing of full |
236 | symbols. */ | |
237 | int reading_partial_symbols; | |
673bfd45 DE |
238 | |
239 | /* Table mapping type .debug_info DIE offsets to types. | |
240 | This is NULL if not allocated yet. | |
241 | It (currently) makes sense to allocate debug_types_type_hash lazily. | |
242 | To keep things simple we allocate both lazily. */ | |
243 | htab_t debug_info_type_hash; | |
244 | ||
245 | /* Table mapping type .debug_types DIE offsets to types. | |
246 | This is NULL if not allocated yet. */ | |
247 | htab_t debug_types_type_hash; | |
6502dd73 DJ |
248 | }; |
249 | ||
250 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 251 | |
251d32d9 | 252 | /* Default names of the debugging sections. */ |
c906108c | 253 | |
233a11ab CS |
254 | /* Note that if the debugging section has been compressed, it might |
255 | have a name like .zdebug_info. */ | |
256 | ||
251d32d9 TG |
257 | static const struct dwarf2_debug_sections dwarf2_elf_names = { |
258 | { ".debug_info", ".zdebug_info" }, | |
259 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
260 | { ".debug_line", ".zdebug_line" }, | |
261 | { ".debug_loc", ".zdebug_loc" }, | |
262 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
263 | { ".debug_str", ".zdebug_str" }, | |
264 | { ".debug_ranges", ".zdebug_ranges" }, | |
265 | { ".debug_types", ".zdebug_types" }, | |
266 | { ".debug_frame", ".zdebug_frame" }, | |
267 | { ".eh_frame", NULL }, | |
268 | { ".gdb_index", ".zgdb_index" } | |
269 | }; | |
c906108c SS |
270 | |
271 | /* local data types */ | |
272 | ||
0963b4bd | 273 | /* We hold several abbreviation tables in memory at the same time. */ |
57349743 JB |
274 | #ifndef ABBREV_HASH_SIZE |
275 | #define ABBREV_HASH_SIZE 121 | |
276 | #endif | |
277 | ||
107d2387 AC |
278 | /* The data in a compilation unit header, after target2host |
279 | translation, looks like this. */ | |
c906108c | 280 | struct comp_unit_head |
a738430d | 281 | { |
c764a876 | 282 | unsigned int length; |
a738430d | 283 | short version; |
a738430d MK |
284 | unsigned char addr_size; |
285 | unsigned char signed_addr_p; | |
9cbfa09e | 286 | unsigned int abbrev_offset; |
57349743 | 287 | |
a738430d MK |
288 | /* Size of file offsets; either 4 or 8. */ |
289 | unsigned int offset_size; | |
57349743 | 290 | |
a738430d MK |
291 | /* Size of the length field; either 4 or 12. */ |
292 | unsigned int initial_length_size; | |
57349743 | 293 | |
a738430d MK |
294 | /* Offset to the first byte of this compilation unit header in the |
295 | .debug_info section, for resolving relative reference dies. */ | |
296 | unsigned int offset; | |
57349743 | 297 | |
d00adf39 DE |
298 | /* Offset to first die in this cu from the start of the cu. |
299 | This will be the first byte following the compilation unit header. */ | |
300 | unsigned int first_die_offset; | |
a738430d | 301 | }; |
c906108c | 302 | |
3da10d80 KS |
303 | /* Type used for delaying computation of method physnames. |
304 | See comments for compute_delayed_physnames. */ | |
305 | struct delayed_method_info | |
306 | { | |
307 | /* The type to which the method is attached, i.e., its parent class. */ | |
308 | struct type *type; | |
309 | ||
310 | /* The index of the method in the type's function fieldlists. */ | |
311 | int fnfield_index; | |
312 | ||
313 | /* The index of the method in the fieldlist. */ | |
314 | int index; | |
315 | ||
316 | /* The name of the DIE. */ | |
317 | const char *name; | |
318 | ||
319 | /* The DIE associated with this method. */ | |
320 | struct die_info *die; | |
321 | }; | |
322 | ||
323 | typedef struct delayed_method_info delayed_method_info; | |
324 | DEF_VEC_O (delayed_method_info); | |
325 | ||
e7c27a73 DJ |
326 | /* Internal state when decoding a particular compilation unit. */ |
327 | struct dwarf2_cu | |
328 | { | |
329 | /* The objfile containing this compilation unit. */ | |
330 | struct objfile *objfile; | |
331 | ||
d00adf39 | 332 | /* The header of the compilation unit. */ |
e7c27a73 | 333 | struct comp_unit_head header; |
e142c38c | 334 | |
d00adf39 DE |
335 | /* Base address of this compilation unit. */ |
336 | CORE_ADDR base_address; | |
337 | ||
338 | /* Non-zero if base_address has been set. */ | |
339 | int base_known; | |
340 | ||
e142c38c DJ |
341 | struct function_range *first_fn, *last_fn, *cached_fn; |
342 | ||
343 | /* The language we are debugging. */ | |
344 | enum language language; | |
345 | const struct language_defn *language_defn; | |
346 | ||
b0f35d58 DL |
347 | const char *producer; |
348 | ||
e142c38c DJ |
349 | /* The generic symbol table building routines have separate lists for |
350 | file scope symbols and all all other scopes (local scopes). So | |
351 | we need to select the right one to pass to add_symbol_to_list(). | |
352 | We do it by keeping a pointer to the correct list in list_in_scope. | |
353 | ||
354 | FIXME: The original dwarf code just treated the file scope as the | |
355 | first local scope, and all other local scopes as nested local | |
356 | scopes, and worked fine. Check to see if we really need to | |
357 | distinguish these in buildsym.c. */ | |
358 | struct pending **list_in_scope; | |
359 | ||
f3dd6933 DJ |
360 | /* DWARF abbreviation table associated with this compilation unit. */ |
361 | struct abbrev_info **dwarf2_abbrevs; | |
362 | ||
363 | /* Storage for the abbrev table. */ | |
364 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
365 | |
366 | /* Hash table holding all the loaded partial DIEs. */ | |
367 | htab_t partial_dies; | |
368 | ||
369 | /* Storage for things with the same lifetime as this read-in compilation | |
370 | unit, including partial DIEs. */ | |
371 | struct obstack comp_unit_obstack; | |
372 | ||
ae038cb0 DJ |
373 | /* When multiple dwarf2_cu structures are living in memory, this field |
374 | chains them all together, so that they can be released efficiently. | |
375 | We will probably also want a generation counter so that most-recently-used | |
376 | compilation units are cached... */ | |
377 | struct dwarf2_per_cu_data *read_in_chain; | |
378 | ||
379 | /* Backchain to our per_cu entry if the tree has been built. */ | |
380 | struct dwarf2_per_cu_data *per_cu; | |
381 | ||
382 | /* How many compilation units ago was this CU last referenced? */ | |
383 | int last_used; | |
384 | ||
10b3939b | 385 | /* A hash table of die offsets for following references. */ |
51545339 | 386 | htab_t die_hash; |
10b3939b DJ |
387 | |
388 | /* Full DIEs if read in. */ | |
389 | struct die_info *dies; | |
390 | ||
391 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
392 | units referenced by this one. Only set during full symbol processing; | |
393 | partial symbol tables do not have dependencies. */ | |
394 | htab_t dependencies; | |
395 | ||
cb1df416 DJ |
396 | /* Header data from the line table, during full symbol processing. */ |
397 | struct line_header *line_header; | |
398 | ||
3da10d80 KS |
399 | /* A list of methods which need to have physnames computed |
400 | after all type information has been read. */ | |
401 | VEC (delayed_method_info) *method_list; | |
402 | ||
ae038cb0 DJ |
403 | /* Mark used when releasing cached dies. */ |
404 | unsigned int mark : 1; | |
405 | ||
406 | /* This flag will be set if this compilation unit might include | |
407 | inter-compilation-unit references. */ | |
408 | unsigned int has_form_ref_addr : 1; | |
409 | ||
72bf9492 DJ |
410 | /* This flag will be set if this compilation unit includes any |
411 | DW_TAG_namespace DIEs. If we know that there are explicit | |
412 | DIEs for namespaces, we don't need to try to infer them | |
413 | from mangled names. */ | |
414 | unsigned int has_namespace_info : 1; | |
8be455d7 JK |
415 | |
416 | /* This CU references .debug_loc. See the symtab->locations_valid field. | |
417 | This test is imperfect as there may exist optimized debug code not using | |
418 | any location list and still facing inlining issues if handled as | |
419 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
420 | ||
421 | unsigned int has_loclist : 1; | |
e7c27a73 DJ |
422 | }; |
423 | ||
10b3939b DJ |
424 | /* Persistent data held for a compilation unit, even when not |
425 | processing it. We put a pointer to this structure in the | |
426 | read_symtab_private field of the psymtab. If we encounter | |
427 | inter-compilation-unit references, we also maintain a sorted | |
428 | list of all compilation units. */ | |
429 | ||
ae038cb0 DJ |
430 | struct dwarf2_per_cu_data |
431 | { | |
348e048f | 432 | /* The start offset and length of this compilation unit. 2**29-1 |
ae038cb0 | 433 | bytes should suffice to store the length of any compilation unit |
45452591 DE |
434 | - if it doesn't, GDB will fall over anyway. |
435 | NOTE: Unlike comp_unit_head.length, this length includes | |
436 | initial_length_size. */ | |
c764a876 | 437 | unsigned int offset; |
348e048f | 438 | unsigned int length : 29; |
ae038cb0 DJ |
439 | |
440 | /* Flag indicating this compilation unit will be read in before | |
441 | any of the current compilation units are processed. */ | |
c764a876 | 442 | unsigned int queued : 1; |
ae038cb0 | 443 | |
5afb4e99 DJ |
444 | /* This flag will be set if we need to load absolutely all DIEs |
445 | for this compilation unit, instead of just the ones we think | |
446 | are interesting. It gets set if we look for a DIE in the | |
447 | hash table and don't find it. */ | |
448 | unsigned int load_all_dies : 1; | |
449 | ||
348e048f DE |
450 | /* Non-zero if this CU is from .debug_types. |
451 | Otherwise it's from .debug_info. */ | |
452 | unsigned int from_debug_types : 1; | |
453 | ||
17ea53c3 JK |
454 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
455 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 456 | struct dwarf2_cu *cu; |
1c379e20 | 457 | |
9291a0cd TT |
458 | /* The corresponding objfile. */ |
459 | struct objfile *objfile; | |
460 | ||
461 | /* When using partial symbol tables, the 'psymtab' field is active. | |
462 | Otherwise the 'quick' field is active. */ | |
463 | union | |
464 | { | |
465 | /* The partial symbol table associated with this compilation unit, | |
466 | or NULL for partial units (which do not have an associated | |
467 | symtab). */ | |
468 | struct partial_symtab *psymtab; | |
469 | ||
470 | /* Data needed by the "quick" functions. */ | |
471 | struct dwarf2_per_cu_quick_data *quick; | |
472 | } v; | |
ae038cb0 DJ |
473 | }; |
474 | ||
348e048f DE |
475 | /* Entry in the signatured_types hash table. */ |
476 | ||
477 | struct signatured_type | |
478 | { | |
479 | ULONGEST signature; | |
480 | ||
348e048f DE |
481 | /* Offset in .debug_types of the type defined by this TU. */ |
482 | unsigned int type_offset; | |
483 | ||
484 | /* The CU(/TU) of this type. */ | |
485 | struct dwarf2_per_cu_data per_cu; | |
486 | }; | |
487 | ||
0963b4bd MS |
488 | /* Struct used to pass misc. parameters to read_die_and_children, et |
489 | al. which are used for both .debug_info and .debug_types dies. | |
490 | All parameters here are unchanging for the life of the call. This | |
491 | struct exists to abstract away the constant parameters of die | |
492 | reading. */ | |
93311388 DE |
493 | |
494 | struct die_reader_specs | |
495 | { | |
496 | /* The bfd of this objfile. */ | |
497 | bfd* abfd; | |
498 | ||
499 | /* The CU of the DIE we are parsing. */ | |
500 | struct dwarf2_cu *cu; | |
501 | ||
502 | /* Pointer to start of section buffer. | |
503 | This is either the start of .debug_info or .debug_types. */ | |
504 | const gdb_byte *buffer; | |
505 | }; | |
506 | ||
debd256d JB |
507 | /* The line number information for a compilation unit (found in the |
508 | .debug_line section) begins with a "statement program header", | |
509 | which contains the following information. */ | |
510 | struct line_header | |
511 | { | |
512 | unsigned int total_length; | |
513 | unsigned short version; | |
514 | unsigned int header_length; | |
515 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 516 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
517 | unsigned char default_is_stmt; |
518 | int line_base; | |
519 | unsigned char line_range; | |
520 | unsigned char opcode_base; | |
521 | ||
522 | /* standard_opcode_lengths[i] is the number of operands for the | |
523 | standard opcode whose value is i. This means that | |
524 | standard_opcode_lengths[0] is unused, and the last meaningful | |
525 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
526 | unsigned char *standard_opcode_lengths; | |
527 | ||
528 | /* The include_directories table. NOTE! These strings are not | |
529 | allocated with xmalloc; instead, they are pointers into | |
530 | debug_line_buffer. If you try to free them, `free' will get | |
531 | indigestion. */ | |
532 | unsigned int num_include_dirs, include_dirs_size; | |
533 | char **include_dirs; | |
534 | ||
535 | /* The file_names table. NOTE! These strings are not allocated | |
536 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
537 | Don't try to free them directly. */ | |
538 | unsigned int num_file_names, file_names_size; | |
539 | struct file_entry | |
c906108c | 540 | { |
debd256d JB |
541 | char *name; |
542 | unsigned int dir_index; | |
543 | unsigned int mod_time; | |
544 | unsigned int length; | |
aaa75496 | 545 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 546 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
547 | } *file_names; |
548 | ||
549 | /* The start and end of the statement program following this | |
6502dd73 | 550 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 551 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 552 | }; |
c906108c SS |
553 | |
554 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 555 | need this much information. */ |
c906108c SS |
556 | struct partial_die_info |
557 | { | |
72bf9492 | 558 | /* Offset of this DIE. */ |
c906108c | 559 | unsigned int offset; |
72bf9492 DJ |
560 | |
561 | /* DWARF-2 tag for this DIE. */ | |
562 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
563 | ||
72bf9492 DJ |
564 | /* Assorted flags describing the data found in this DIE. */ |
565 | unsigned int has_children : 1; | |
566 | unsigned int is_external : 1; | |
567 | unsigned int is_declaration : 1; | |
568 | unsigned int has_type : 1; | |
569 | unsigned int has_specification : 1; | |
570 | unsigned int has_pc_info : 1; | |
571 | ||
572 | /* Flag set if the SCOPE field of this structure has been | |
573 | computed. */ | |
574 | unsigned int scope_set : 1; | |
575 | ||
fa4028e9 JB |
576 | /* Flag set if the DIE has a byte_size attribute. */ |
577 | unsigned int has_byte_size : 1; | |
578 | ||
98bfdba5 PA |
579 | /* Flag set if any of the DIE's children are template arguments. */ |
580 | unsigned int has_template_arguments : 1; | |
581 | ||
abc72ce4 DE |
582 | /* Flag set if fixup_partial_die has been called on this die. */ |
583 | unsigned int fixup_called : 1; | |
584 | ||
72bf9492 | 585 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 586 | sometimes a default name for unnamed DIEs. */ |
c906108c | 587 | char *name; |
72bf9492 | 588 | |
abc72ce4 DE |
589 | /* The linkage name, if present. */ |
590 | const char *linkage_name; | |
591 | ||
72bf9492 DJ |
592 | /* The scope to prepend to our children. This is generally |
593 | allocated on the comp_unit_obstack, so will disappear | |
594 | when this compilation unit leaves the cache. */ | |
595 | char *scope; | |
596 | ||
597 | /* The location description associated with this DIE, if any. */ | |
598 | struct dwarf_block *locdesc; | |
599 | ||
600 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
601 | CORE_ADDR lowpc; |
602 | CORE_ADDR highpc; | |
72bf9492 | 603 | |
93311388 | 604 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 605 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
606 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
607 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
fe1b8b76 | 608 | gdb_byte *sibling; |
72bf9492 DJ |
609 | |
610 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
611 | DW_AT_specification (or DW_AT_abstract_origin or | |
612 | DW_AT_extension). */ | |
613 | unsigned int spec_offset; | |
614 | ||
615 | /* Pointers to this DIE's parent, first child, and next sibling, | |
616 | if any. */ | |
617 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
618 | }; |
619 | ||
0963b4bd | 620 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
621 | struct abbrev_info |
622 | { | |
623 | unsigned int number; /* number identifying abbrev */ | |
624 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
625 | unsigned short has_children; /* boolean */ |
626 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
627 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
628 | struct abbrev_info *next; /* next in chain */ | |
629 | }; | |
630 | ||
631 | struct attr_abbrev | |
632 | { | |
9d25dd43 DE |
633 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
634 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
635 | }; |
636 | ||
0963b4bd | 637 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
638 | struct attribute |
639 | { | |
9d25dd43 | 640 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
641 | ENUM_BITFIELD(dwarf_form) form : 15; |
642 | ||
643 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
644 | field should be in u.str (existing only for DW_STRING) but it is kept | |
645 | here for better struct attribute alignment. */ | |
646 | unsigned int string_is_canonical : 1; | |
647 | ||
b60c80d6 DJ |
648 | union |
649 | { | |
650 | char *str; | |
651 | struct dwarf_block *blk; | |
43bbcdc2 PH |
652 | ULONGEST unsnd; |
653 | LONGEST snd; | |
b60c80d6 | 654 | CORE_ADDR addr; |
348e048f | 655 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
656 | } |
657 | u; | |
658 | }; | |
659 | ||
0963b4bd | 660 | /* This data structure holds a complete die structure. */ |
c906108c SS |
661 | struct die_info |
662 | { | |
76815b17 DE |
663 | /* DWARF-2 tag for this DIE. */ |
664 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
665 | ||
666 | /* Number of attributes */ | |
98bfdba5 PA |
667 | unsigned char num_attrs; |
668 | ||
669 | /* True if we're presently building the full type name for the | |
670 | type derived from this DIE. */ | |
671 | unsigned char building_fullname : 1; | |
76815b17 DE |
672 | |
673 | /* Abbrev number */ | |
674 | unsigned int abbrev; | |
675 | ||
93311388 | 676 | /* Offset in .debug_info or .debug_types section. */ |
76815b17 | 677 | unsigned int offset; |
78ba4af6 JB |
678 | |
679 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
680 | points to this die's parent; CHILD points to the first child of | |
681 | this node; and all the children of a given node are chained | |
4950bc1c | 682 | together via their SIBLING fields. */ |
639d11d3 DC |
683 | struct die_info *child; /* Its first child, if any. */ |
684 | struct die_info *sibling; /* Its next sibling, if any. */ | |
685 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 686 | |
b60c80d6 DJ |
687 | /* An array of attributes, with NUM_ATTRS elements. There may be |
688 | zero, but it's not common and zero-sized arrays are not | |
689 | sufficiently portable C. */ | |
690 | struct attribute attrs[1]; | |
c906108c SS |
691 | }; |
692 | ||
5fb290d7 DJ |
693 | struct function_range |
694 | { | |
695 | const char *name; | |
696 | CORE_ADDR lowpc, highpc; | |
697 | int seen_line; | |
698 | struct function_range *next; | |
699 | }; | |
700 | ||
0963b4bd | 701 | /* Get at parts of an attribute structure. */ |
c906108c SS |
702 | |
703 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 704 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
705 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
706 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
707 | #define DW_SND(attr) ((attr)->u.snd) | |
708 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 709 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c | 710 | |
0963b4bd | 711 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
712 | struct dwarf_block |
713 | { | |
714 | unsigned int size; | |
fe1b8b76 | 715 | gdb_byte *data; |
c906108c SS |
716 | }; |
717 | ||
c906108c SS |
718 | #ifndef ATTR_ALLOC_CHUNK |
719 | #define ATTR_ALLOC_CHUNK 4 | |
720 | #endif | |
721 | ||
c906108c SS |
722 | /* Allocate fields for structs, unions and enums in this size. */ |
723 | #ifndef DW_FIELD_ALLOC_CHUNK | |
724 | #define DW_FIELD_ALLOC_CHUNK 4 | |
725 | #endif | |
726 | ||
c906108c SS |
727 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
728 | but this would require a corresponding change in unpack_field_as_long | |
729 | and friends. */ | |
730 | static int bits_per_byte = 8; | |
731 | ||
732 | /* The routines that read and process dies for a C struct or C++ class | |
733 | pass lists of data member fields and lists of member function fields | |
734 | in an instance of a field_info structure, as defined below. */ | |
735 | struct field_info | |
c5aa993b | 736 | { |
0963b4bd | 737 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
738 | struct nextfield |
739 | { | |
740 | struct nextfield *next; | |
741 | int accessibility; | |
742 | int virtuality; | |
743 | struct field field; | |
744 | } | |
7d0ccb61 | 745 | *fields, *baseclasses; |
c906108c | 746 | |
7d0ccb61 | 747 | /* Number of fields (including baseclasses). */ |
c5aa993b | 748 | int nfields; |
c906108c | 749 | |
c5aa993b JM |
750 | /* Number of baseclasses. */ |
751 | int nbaseclasses; | |
c906108c | 752 | |
c5aa993b JM |
753 | /* Set if the accesibility of one of the fields is not public. */ |
754 | int non_public_fields; | |
c906108c | 755 | |
c5aa993b JM |
756 | /* Member function fields array, entries are allocated in the order they |
757 | are encountered in the object file. */ | |
758 | struct nextfnfield | |
759 | { | |
760 | struct nextfnfield *next; | |
761 | struct fn_field fnfield; | |
762 | } | |
763 | *fnfields; | |
c906108c | 764 | |
c5aa993b JM |
765 | /* Member function fieldlist array, contains name of possibly overloaded |
766 | member function, number of overloaded member functions and a pointer | |
767 | to the head of the member function field chain. */ | |
768 | struct fnfieldlist | |
769 | { | |
770 | char *name; | |
771 | int length; | |
772 | struct nextfnfield *head; | |
773 | } | |
774 | *fnfieldlists; | |
c906108c | 775 | |
c5aa993b JM |
776 | /* Number of entries in the fnfieldlists array. */ |
777 | int nfnfields; | |
98751a41 JK |
778 | |
779 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
780 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
781 | struct typedef_field_list | |
782 | { | |
783 | struct typedef_field field; | |
784 | struct typedef_field_list *next; | |
785 | } | |
786 | *typedef_field_list; | |
787 | unsigned typedef_field_list_count; | |
c5aa993b | 788 | }; |
c906108c | 789 | |
10b3939b DJ |
790 | /* One item on the queue of compilation units to read in full symbols |
791 | for. */ | |
792 | struct dwarf2_queue_item | |
793 | { | |
794 | struct dwarf2_per_cu_data *per_cu; | |
795 | struct dwarf2_queue_item *next; | |
796 | }; | |
797 | ||
798 | /* The current queue. */ | |
799 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
800 | ||
ae038cb0 DJ |
801 | /* Loaded secondary compilation units are kept in memory until they |
802 | have not been referenced for the processing of this many | |
803 | compilation units. Set this to zero to disable caching. Cache | |
804 | sizes of up to at least twenty will improve startup time for | |
805 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
806 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
807 | static void |
808 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
809 | struct cmd_list_element *c, const char *value) | |
810 | { | |
3e43a32a MS |
811 | fprintf_filtered (file, _("The upper bound on the age of cached " |
812 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
813 | value); |
814 | } | |
815 | ||
ae038cb0 | 816 | |
0963b4bd | 817 | /* Various complaints about symbol reading that don't abort the process. */ |
c906108c | 818 | |
4d3c2250 KB |
819 | static void |
820 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 821 | { |
4d3c2250 | 822 | complaint (&symfile_complaints, |
e2e0b3e5 | 823 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
824 | } |
825 | ||
25e43795 DJ |
826 | static void |
827 | dwarf2_debug_line_missing_file_complaint (void) | |
828 | { | |
829 | complaint (&symfile_complaints, | |
830 | _(".debug_line section has line data without a file")); | |
831 | } | |
832 | ||
59205f5a JB |
833 | static void |
834 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
835 | { | |
836 | complaint (&symfile_complaints, | |
3e43a32a MS |
837 | _(".debug_line section has line " |
838 | "program sequence without an end")); | |
59205f5a JB |
839 | } |
840 | ||
4d3c2250 KB |
841 | static void |
842 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 843 | { |
e2e0b3e5 | 844 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
845 | } |
846 | ||
4d3c2250 KB |
847 | static void |
848 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
849 | int arg3) | |
2e276125 | 850 | { |
4d3c2250 | 851 | complaint (&symfile_complaints, |
3e43a32a MS |
852 | _("const value length mismatch for '%s', got %d, expected %d"), |
853 | arg1, arg2, arg3); | |
4d3c2250 KB |
854 | } |
855 | ||
856 | static void | |
857 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 858 | { |
4d3c2250 | 859 | complaint (&symfile_complaints, |
e2e0b3e5 | 860 | _("macro info runs off end of `.debug_macinfo' section")); |
4d3c2250 KB |
861 | } |
862 | ||
863 | static void | |
864 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 865 | { |
4d3c2250 | 866 | complaint (&symfile_complaints, |
3e43a32a MS |
867 | _("macro debug info contains a " |
868 | "malformed macro definition:\n`%s'"), | |
4d3c2250 KB |
869 | arg1); |
870 | } | |
871 | ||
872 | static void | |
873 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 874 | { |
4d3c2250 | 875 | complaint (&symfile_complaints, |
3e43a32a MS |
876 | _("invalid attribute class or form for '%s' in '%s'"), |
877 | arg1, arg2); | |
4d3c2250 | 878 | } |
c906108c | 879 | |
c906108c SS |
880 | /* local function prototypes */ |
881 | ||
4efb68b1 | 882 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 883 | |
aaa75496 JB |
884 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
885 | struct objfile *); | |
886 | ||
c67a9c90 | 887 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 888 | |
72bf9492 DJ |
889 | static void scan_partial_symbols (struct partial_die_info *, |
890 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 891 | int, struct dwarf2_cu *); |
c906108c | 892 | |
72bf9492 DJ |
893 | static void add_partial_symbol (struct partial_die_info *, |
894 | struct dwarf2_cu *); | |
63d06c5c | 895 | |
72bf9492 DJ |
896 | static void add_partial_namespace (struct partial_die_info *pdi, |
897 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 898 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 899 | |
5d7cb8df JK |
900 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
901 | CORE_ADDR *highpc, int need_pc, | |
902 | struct dwarf2_cu *cu); | |
903 | ||
72bf9492 DJ |
904 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
905 | struct dwarf2_cu *cu); | |
91c24f0a | 906 | |
bc30ff58 JB |
907 | static void add_partial_subprogram (struct partial_die_info *pdi, |
908 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 909 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 910 | |
fe1b8b76 | 911 | static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi, |
93311388 DE |
912 | gdb_byte *buffer, gdb_byte *info_ptr, |
913 | bfd *abfd, struct dwarf2_cu *cu); | |
91c24f0a | 914 | |
a14ed312 | 915 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 916 | |
a14ed312 | 917 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 918 | |
e7c27a73 | 919 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 920 | |
f3dd6933 | 921 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 922 | |
fe1b8b76 | 923 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 924 | struct dwarf2_cu *); |
72bf9492 | 925 | |
57349743 | 926 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 927 | struct dwarf2_cu *); |
c906108c | 928 | |
93311388 DE |
929 | static struct partial_die_info *load_partial_dies (bfd *, |
930 | gdb_byte *, gdb_byte *, | |
931 | int, struct dwarf2_cu *); | |
72bf9492 | 932 | |
fe1b8b76 | 933 | static gdb_byte *read_partial_die (struct partial_die_info *, |
93311388 DE |
934 | struct abbrev_info *abbrev, |
935 | unsigned int, bfd *, | |
936 | gdb_byte *, gdb_byte *, | |
937 | struct dwarf2_cu *); | |
c906108c | 938 | |
c764a876 | 939 | static struct partial_die_info *find_partial_die (unsigned int, |
10b3939b | 940 | struct dwarf2_cu *); |
72bf9492 DJ |
941 | |
942 | static void fixup_partial_die (struct partial_die_info *, | |
943 | struct dwarf2_cu *); | |
944 | ||
fe1b8b76 JB |
945 | static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *, |
946 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 947 | |
fe1b8b76 JB |
948 | static gdb_byte *read_attribute_value (struct attribute *, unsigned, |
949 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
a8329558 | 950 | |
fe1b8b76 | 951 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 952 | |
fe1b8b76 | 953 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 954 | |
fe1b8b76 | 955 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 956 | |
fe1b8b76 | 957 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 958 | |
93311388 | 959 | static ULONGEST read_8_bytes (bfd *, gdb_byte *); |
c906108c | 960 | |
fe1b8b76 | 961 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 962 | unsigned int *); |
c906108c | 963 | |
c764a876 DE |
964 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
965 | ||
966 | static LONGEST read_checked_initial_length_and_offset | |
967 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
968 | unsigned int *, unsigned int *); | |
613e1657 | 969 | |
fe1b8b76 | 970 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
971 | unsigned int *); |
972 | ||
973 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 974 | |
fe1b8b76 | 975 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 976 | |
9b1c24c8 | 977 | static char *read_direct_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 978 | |
fe1b8b76 JB |
979 | static char *read_indirect_string (bfd *, gdb_byte *, |
980 | const struct comp_unit_head *, | |
981 | unsigned int *); | |
4bdf3d34 | 982 | |
fe1b8b76 | 983 | static unsigned long read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 984 | |
fe1b8b76 | 985 | static long read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 986 | |
fe1b8b76 | 987 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 988 | |
e142c38c | 989 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 990 | |
e142c38c DJ |
991 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
992 | struct dwarf2_cu *); | |
c906108c | 993 | |
348e048f DE |
994 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
995 | unsigned int, | |
996 | struct dwarf2_cu *); | |
997 | ||
05cf31d1 JB |
998 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
999 | struct dwarf2_cu *cu); | |
1000 | ||
e142c38c | 1001 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1002 | |
e142c38c | 1003 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1004 | struct dwarf2_cu **); |
63d06c5c | 1005 | |
debd256d JB |
1006 | static void free_line_header (struct line_header *lh); |
1007 | ||
aaa75496 JB |
1008 | static void add_file_name (struct line_header *, char *, unsigned int, |
1009 | unsigned int, unsigned int); | |
1010 | ||
debd256d JB |
1011 | static struct line_header *(dwarf_decode_line_header |
1012 | (unsigned int offset, | |
e7c27a73 | 1013 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d | 1014 | |
72b9f47f | 1015 | static void dwarf_decode_lines (struct line_header *, const char *, bfd *, |
aaa75496 | 1016 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 1017 | |
72b9f47f | 1018 | static void dwarf2_start_subfile (char *, const char *, const char *); |
c906108c | 1019 | |
a14ed312 | 1020 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1021 | struct dwarf2_cu *); |
c906108c | 1022 | |
34eaf542 TT |
1023 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1024 | struct dwarf2_cu *, struct symbol *); | |
1025 | ||
a14ed312 | 1026 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 1027 | struct dwarf2_cu *); |
c906108c | 1028 | |
98bfdba5 PA |
1029 | static void dwarf2_const_value_attr (struct attribute *attr, |
1030 | struct type *type, | |
1031 | const char *name, | |
1032 | struct obstack *obstack, | |
1033 | struct dwarf2_cu *cu, long *value, | |
1034 | gdb_byte **bytes, | |
1035 | struct dwarf2_locexpr_baton **baton); | |
2df3850c | 1036 | |
e7c27a73 | 1037 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1038 | |
b4ba55a1 JB |
1039 | static int need_gnat_info (struct dwarf2_cu *); |
1040 | ||
3e43a32a MS |
1041 | static struct type *die_descriptive_type (struct die_info *, |
1042 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1043 | |
1044 | static void set_descriptive_type (struct type *, struct die_info *, | |
1045 | struct dwarf2_cu *); | |
1046 | ||
e7c27a73 DJ |
1047 | static struct type *die_containing_type (struct die_info *, |
1048 | struct dwarf2_cu *); | |
c906108c | 1049 | |
673bfd45 DE |
1050 | static struct type *lookup_die_type (struct die_info *, struct attribute *, |
1051 | struct dwarf2_cu *); | |
c906108c | 1052 | |
f792889a | 1053 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1054 | |
673bfd45 DE |
1055 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1056 | ||
086ed43d | 1057 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1058 | |
6e70227d | 1059 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1060 | const char *suffix, int physname, |
1061 | struct dwarf2_cu *cu); | |
63d06c5c | 1062 | |
e7c27a73 | 1063 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1064 | |
348e048f DE |
1065 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1066 | ||
e7c27a73 | 1067 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1068 | |
e7c27a73 | 1069 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1070 | |
ff013f42 JK |
1071 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1072 | struct dwarf2_cu *, struct partial_symtab *); | |
1073 | ||
a14ed312 | 1074 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1075 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1076 | struct partial_symtab *); | |
c906108c | 1077 | |
fae299cd DC |
1078 | static void get_scope_pc_bounds (struct die_info *, |
1079 | CORE_ADDR *, CORE_ADDR *, | |
1080 | struct dwarf2_cu *); | |
1081 | ||
801e3a5b JB |
1082 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1083 | CORE_ADDR, struct dwarf2_cu *); | |
1084 | ||
a14ed312 | 1085 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1086 | struct dwarf2_cu *); |
c906108c | 1087 | |
a14ed312 | 1088 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1089 | struct type *, struct dwarf2_cu *); |
c906108c | 1090 | |
a14ed312 | 1091 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1092 | struct die_info *, struct type *, |
e7c27a73 | 1093 | struct dwarf2_cu *); |
c906108c | 1094 | |
a14ed312 | 1095 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1096 | struct type *, |
1097 | struct dwarf2_cu *); | |
c906108c | 1098 | |
134d01f1 | 1099 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1100 | |
e7c27a73 | 1101 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1102 | |
e7c27a73 | 1103 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1104 | |
5d7cb8df JK |
1105 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1106 | ||
27aa8d6a SW |
1107 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1108 | ||
f55ee35c JK |
1109 | static struct type *read_module_type (struct die_info *die, |
1110 | struct dwarf2_cu *cu); | |
1111 | ||
38d518c9 | 1112 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1113 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1114 | |
134d01f1 | 1115 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1116 | |
e7c27a73 | 1117 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1118 | |
6e70227d | 1119 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1120 | struct dwarf2_cu *); |
1121 | ||
93311388 | 1122 | static struct die_info *read_comp_unit (gdb_byte *, struct dwarf2_cu *); |
c906108c | 1123 | |
93311388 DE |
1124 | static struct die_info *read_die_and_children_1 (const struct die_reader_specs *reader, |
1125 | gdb_byte *info_ptr, | |
d97bc12b DE |
1126 | gdb_byte **new_info_ptr, |
1127 | struct die_info *parent); | |
1128 | ||
93311388 DE |
1129 | static struct die_info *read_die_and_children (const struct die_reader_specs *reader, |
1130 | gdb_byte *info_ptr, | |
fe1b8b76 | 1131 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1132 | struct die_info *parent); |
1133 | ||
93311388 DE |
1134 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *reader, |
1135 | gdb_byte *info_ptr, | |
fe1b8b76 | 1136 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1137 | struct die_info *parent); |
1138 | ||
93311388 DE |
1139 | static gdb_byte *read_full_die (const struct die_reader_specs *reader, |
1140 | struct die_info **, gdb_byte *, | |
1141 | int *); | |
1142 | ||
e7c27a73 | 1143 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1144 | |
71c25dea TT |
1145 | static char *dwarf2_canonicalize_name (char *, struct dwarf2_cu *, |
1146 | struct obstack *); | |
1147 | ||
e142c38c | 1148 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1149 | |
98bfdba5 PA |
1150 | static const char *dwarf2_full_name (char *name, |
1151 | struct die_info *die, | |
1152 | struct dwarf2_cu *cu); | |
1153 | ||
e142c38c | 1154 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1155 | struct dwarf2_cu **); |
9219021c | 1156 | |
a14ed312 | 1157 | static char *dwarf_tag_name (unsigned int); |
c906108c | 1158 | |
a14ed312 | 1159 | static char *dwarf_attr_name (unsigned int); |
c906108c | 1160 | |
a14ed312 | 1161 | static char *dwarf_form_name (unsigned int); |
c906108c | 1162 | |
a14ed312 | 1163 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1164 | |
a14ed312 | 1165 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
1166 | |
1167 | #if 0 | |
a14ed312 | 1168 | static char *dwarf_cfi_name (unsigned int); |
c906108c SS |
1169 | #endif |
1170 | ||
f9aca02d | 1171 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1172 | |
d97bc12b DE |
1173 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1174 | ||
1175 | static void dump_die_for_error (struct die_info *); | |
1176 | ||
1177 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1178 | struct die_info *); | |
c906108c | 1179 | |
d97bc12b | 1180 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1181 | |
51545339 | 1182 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1183 | struct dwarf2_cu *); |
c906108c | 1184 | |
93311388 DE |
1185 | static int is_ref_attr (struct attribute *); |
1186 | ||
c764a876 | 1187 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1188 | |
43bbcdc2 | 1189 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1190 | |
348e048f DE |
1191 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1192 | struct attribute *, | |
1193 | struct dwarf2_cu **); | |
1194 | ||
10b3939b DJ |
1195 | static struct die_info *follow_die_ref (struct die_info *, |
1196 | struct attribute *, | |
f2f0e013 | 1197 | struct dwarf2_cu **); |
c906108c | 1198 | |
348e048f DE |
1199 | static struct die_info *follow_die_sig (struct die_info *, |
1200 | struct attribute *, | |
1201 | struct dwarf2_cu **); | |
1202 | ||
1203 | static void read_signatured_type_at_offset (struct objfile *objfile, | |
1204 | unsigned int offset); | |
1205 | ||
1206 | static void read_signatured_type (struct objfile *, | |
1207 | struct signatured_type *type_sig); | |
1208 | ||
c906108c SS |
1209 | /* memory allocation interface */ |
1210 | ||
7b5a2f43 | 1211 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1212 | |
f3dd6933 | 1213 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1214 | |
b60c80d6 | 1215 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1216 | |
e142c38c | 1217 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 1218 | |
e142c38c DJ |
1219 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
1220 | struct dwarf2_cu *); | |
5fb290d7 | 1221 | |
2e276125 | 1222 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 1223 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 1224 | |
8e19ed76 PS |
1225 | static int attr_form_is_block (struct attribute *); |
1226 | ||
3690dd37 JB |
1227 | static int attr_form_is_section_offset (struct attribute *); |
1228 | ||
1229 | static int attr_form_is_constant (struct attribute *); | |
1230 | ||
8cf6f0b1 TT |
1231 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1232 | struct dwarf2_loclist_baton *baton, | |
1233 | struct attribute *attr); | |
1234 | ||
93e7bd98 DJ |
1235 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1236 | struct symbol *sym, | |
1237 | struct dwarf2_cu *cu); | |
4c2df51b | 1238 | |
93311388 DE |
1239 | static gdb_byte *skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
1240 | struct abbrev_info *abbrev, | |
1241 | struct dwarf2_cu *cu); | |
4bb7a0a7 | 1242 | |
72bf9492 DJ |
1243 | static void free_stack_comp_unit (void *); |
1244 | ||
72bf9492 DJ |
1245 | static hashval_t partial_die_hash (const void *item); |
1246 | ||
1247 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1248 | ||
ae038cb0 | 1249 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
c764a876 | 1250 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 DJ |
1251 | |
1252 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
c764a876 | 1253 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 | 1254 | |
9816fde3 JK |
1255 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
1256 | struct objfile *objfile); | |
1257 | ||
1258 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
1259 | struct die_info *comp_unit_die); | |
93311388 | 1260 | |
ae038cb0 DJ |
1261 | static void free_one_comp_unit (void *); |
1262 | ||
1263 | static void free_cached_comp_units (void *); | |
1264 | ||
1265 | static void age_cached_comp_units (void); | |
1266 | ||
1267 | static void free_one_cached_comp_unit (void *); | |
1268 | ||
f792889a DJ |
1269 | static struct type *set_die_type (struct die_info *, struct type *, |
1270 | struct dwarf2_cu *); | |
1c379e20 | 1271 | |
ae038cb0 DJ |
1272 | static void create_all_comp_units (struct objfile *); |
1273 | ||
1fd400ff TT |
1274 | static int create_debug_types_hash_table (struct objfile *objfile); |
1275 | ||
93311388 DE |
1276 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1277 | struct objfile *); | |
10b3939b DJ |
1278 | |
1279 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1280 | ||
1281 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1282 | struct dwarf2_per_cu_data *); | |
1283 | ||
ae038cb0 DJ |
1284 | static void dwarf2_mark (struct dwarf2_cu *); |
1285 | ||
1286 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1287 | ||
673bfd45 DE |
1288 | static struct type *get_die_type_at_offset (unsigned int, |
1289 | struct dwarf2_per_cu_data *per_cu); | |
1290 | ||
f792889a | 1291 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1292 | |
9291a0cd TT |
1293 | static void dwarf2_release_queue (void *dummy); |
1294 | ||
1295 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, | |
1296 | struct objfile *objfile); | |
1297 | ||
1298 | static void process_queue (struct objfile *objfile); | |
1299 | ||
1300 | static void find_file_and_directory (struct die_info *die, | |
1301 | struct dwarf2_cu *cu, | |
1302 | char **name, char **comp_dir); | |
1303 | ||
1304 | static char *file_full_name (int file, struct line_header *lh, | |
1305 | const char *comp_dir); | |
1306 | ||
1307 | static gdb_byte *partial_read_comp_unit_head (struct comp_unit_head *header, | |
1308 | gdb_byte *info_ptr, | |
1309 | gdb_byte *buffer, | |
1310 | unsigned int buffer_size, | |
1311 | bfd *abfd); | |
1312 | ||
1313 | static void init_cu_die_reader (struct die_reader_specs *reader, | |
1314 | struct dwarf2_cu *cu); | |
1315 | ||
673bfd45 | 1316 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1317 | |
9291a0cd TT |
1318 | #if WORDS_BIGENDIAN |
1319 | ||
1320 | /* Convert VALUE between big- and little-endian. */ | |
1321 | static offset_type | |
1322 | byte_swap (offset_type value) | |
1323 | { | |
1324 | offset_type result; | |
1325 | ||
1326 | result = (value & 0xff) << 24; | |
1327 | result |= (value & 0xff00) << 8; | |
1328 | result |= (value & 0xff0000) >> 8; | |
1329 | result |= (value & 0xff000000) >> 24; | |
1330 | return result; | |
1331 | } | |
1332 | ||
1333 | #define MAYBE_SWAP(V) byte_swap (V) | |
1334 | ||
1335 | #else | |
1336 | #define MAYBE_SWAP(V) (V) | |
1337 | #endif /* WORDS_BIGENDIAN */ | |
1338 | ||
1339 | /* The suffix for an index file. */ | |
1340 | #define INDEX_SUFFIX ".gdb-index" | |
1341 | ||
3da10d80 KS |
1342 | static const char *dwarf2_physname (char *name, struct die_info *die, |
1343 | struct dwarf2_cu *cu); | |
1344 | ||
c906108c | 1345 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1346 | information and return true if we have enough to do something. |
1347 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
1348 | ELF names are used. */ | |
c906108c SS |
1349 | |
1350 | int | |
251d32d9 TG |
1351 | dwarf2_has_info (struct objfile *objfile, |
1352 | const struct dwarf2_debug_sections *names) | |
c906108c | 1353 | { |
be391dca TT |
1354 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1355 | if (!dwarf2_per_objfile) | |
1356 | { | |
1357 | /* Initialize per-objfile state. */ | |
1358 | struct dwarf2_per_objfile *data | |
1359 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1360 | |
be391dca TT |
1361 | memset (data, 0, sizeof (*data)); |
1362 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1363 | dwarf2_per_objfile = data; | |
6502dd73 | 1364 | |
251d32d9 TG |
1365 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
1366 | (void *) names); | |
be391dca TT |
1367 | dwarf2_per_objfile->objfile = objfile; |
1368 | } | |
1369 | return (dwarf2_per_objfile->info.asection != NULL | |
1370 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1371 | } |
1372 | ||
251d32d9 TG |
1373 | /* When loading sections, we look either for uncompressed section or for |
1374 | compressed section names. */ | |
233a11ab CS |
1375 | |
1376 | static int | |
251d32d9 TG |
1377 | section_is_p (const char *section_name, |
1378 | const struct dwarf2_section_names *names) | |
233a11ab | 1379 | { |
251d32d9 TG |
1380 | if (names->normal != NULL |
1381 | && strcmp (section_name, names->normal) == 0) | |
1382 | return 1; | |
1383 | if (names->compressed != NULL | |
1384 | && strcmp (section_name, names->compressed) == 0) | |
1385 | return 1; | |
1386 | return 0; | |
233a11ab CS |
1387 | } |
1388 | ||
c906108c SS |
1389 | /* This function is mapped across the sections and remembers the |
1390 | offset and size of each of the debugging sections we are interested | |
1391 | in. */ | |
1392 | ||
1393 | static void | |
251d32d9 | 1394 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 1395 | { |
251d32d9 TG |
1396 | const struct dwarf2_debug_sections *names; |
1397 | ||
1398 | if (vnames == NULL) | |
1399 | names = &dwarf2_elf_names; | |
1400 | else | |
1401 | names = (const struct dwarf2_debug_sections *) vnames; | |
1402 | ||
1403 | if (section_is_p (sectp->name, &names->info)) | |
c906108c | 1404 | { |
dce234bc PP |
1405 | dwarf2_per_objfile->info.asection = sectp; |
1406 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1407 | } |
251d32d9 | 1408 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 1409 | { |
dce234bc PP |
1410 | dwarf2_per_objfile->abbrev.asection = sectp; |
1411 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1412 | } |
251d32d9 | 1413 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 1414 | { |
dce234bc PP |
1415 | dwarf2_per_objfile->line.asection = sectp; |
1416 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1417 | } |
251d32d9 | 1418 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 1419 | { |
dce234bc PP |
1420 | dwarf2_per_objfile->loc.asection = sectp; |
1421 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1422 | } |
251d32d9 | 1423 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 1424 | { |
dce234bc PP |
1425 | dwarf2_per_objfile->macinfo.asection = sectp; |
1426 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1427 | } |
251d32d9 | 1428 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 1429 | { |
dce234bc PP |
1430 | dwarf2_per_objfile->str.asection = sectp; |
1431 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1432 | } |
251d32d9 | 1433 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 1434 | { |
dce234bc PP |
1435 | dwarf2_per_objfile->frame.asection = sectp; |
1436 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1437 | } |
251d32d9 | 1438 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 1439 | { |
3799ccc6 | 1440 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
9a619af0 | 1441 | |
3799ccc6 EZ |
1442 | if (aflag & SEC_HAS_CONTENTS) |
1443 | { | |
dce234bc PP |
1444 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1445 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
3799ccc6 | 1446 | } |
b6af0555 | 1447 | } |
251d32d9 | 1448 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 1449 | { |
dce234bc PP |
1450 | dwarf2_per_objfile->ranges.asection = sectp; |
1451 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1452 | } |
251d32d9 | 1453 | else if (section_is_p (sectp->name, &names->types)) |
348e048f DE |
1454 | { |
1455 | dwarf2_per_objfile->types.asection = sectp; | |
1456 | dwarf2_per_objfile->types.size = bfd_get_section_size (sectp); | |
1457 | } | |
251d32d9 | 1458 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd TT |
1459 | { |
1460 | dwarf2_per_objfile->gdb_index.asection = sectp; | |
1461 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); | |
1462 | } | |
dce234bc | 1463 | |
72dca2f5 FR |
1464 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1465 | && bfd_section_vma (abfd, sectp) == 0) | |
1466 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1467 | } |
1468 | ||
dce234bc PP |
1469 | /* Decompress a section that was compressed using zlib. Store the |
1470 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
233a11ab CS |
1471 | |
1472 | static void | |
dce234bc PP |
1473 | zlib_decompress_section (struct objfile *objfile, asection *sectp, |
1474 | gdb_byte **outbuf, bfd_size_type *outsize) | |
1475 | { | |
1476 | bfd *abfd = objfile->obfd; | |
1477 | #ifndef HAVE_ZLIB_H | |
1478 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
1479 | "is disabled in this copy of GDB"), | |
1480 | bfd_get_filename (abfd)); | |
1481 | #else | |
1482 | bfd_size_type compressed_size = bfd_get_section_size (sectp); | |
1483 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
affddf13 | 1484 | struct cleanup *cleanup = make_cleanup (xfree, compressed_buffer); |
dce234bc PP |
1485 | bfd_size_type uncompressed_size; |
1486 | gdb_byte *uncompressed_buffer; | |
1487 | z_stream strm; | |
1488 | int rc; | |
1489 | int header_size = 12; | |
1490 | ||
1491 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
3e43a32a MS |
1492 | || bfd_bread (compressed_buffer, |
1493 | compressed_size, abfd) != compressed_size) | |
dce234bc PP |
1494 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
1495 | bfd_get_filename (abfd)); | |
1496 | ||
1497 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
1498 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
1499 | if (compressed_size < header_size | |
1500 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
1501 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
1502 | bfd_get_filename (abfd)); | |
1503 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
1504 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
1505 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
1506 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
1507 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
1508 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
1509 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
1510 | uncompressed_size += compressed_buffer[11]; | |
1511 | ||
1512 | /* It is possible the section consists of several compressed | |
1513 | buffers concatenated together, so we uncompress in a loop. */ | |
1514 | strm.zalloc = NULL; | |
1515 | strm.zfree = NULL; | |
1516 | strm.opaque = NULL; | |
1517 | strm.avail_in = compressed_size - header_size; | |
1518 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
1519 | strm.avail_out = uncompressed_size; | |
1520 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
1521 | uncompressed_size); | |
1522 | rc = inflateInit (&strm); | |
1523 | while (strm.avail_in > 0) | |
1524 | { | |
1525 | if (rc != Z_OK) | |
1526 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
1527 | bfd_get_filename (abfd), rc); | |
1528 | strm.next_out = ((Bytef*) uncompressed_buffer | |
1529 | + (uncompressed_size - strm.avail_out)); | |
1530 | rc = inflate (&strm, Z_FINISH); | |
1531 | if (rc != Z_STREAM_END) | |
1532 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
1533 | bfd_get_filename (abfd), rc); | |
1534 | rc = inflateReset (&strm); | |
1535 | } | |
1536 | rc = inflateEnd (&strm); | |
1537 | if (rc != Z_OK | |
1538 | || strm.avail_out != 0) | |
1539 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
1540 | bfd_get_filename (abfd), rc); | |
1541 | ||
affddf13 | 1542 | do_cleanups (cleanup); |
dce234bc PP |
1543 | *outbuf = uncompressed_buffer; |
1544 | *outsize = uncompressed_size; | |
1545 | #endif | |
233a11ab CS |
1546 | } |
1547 | ||
9e0ac564 TT |
1548 | /* A helper function that decides whether a section is empty. */ |
1549 | ||
1550 | static int | |
1551 | dwarf2_section_empty_p (struct dwarf2_section_info *info) | |
1552 | { | |
1553 | return info->asection == NULL || info->size == 0; | |
1554 | } | |
1555 | ||
dce234bc PP |
1556 | /* Read the contents of the section SECTP from object file specified by |
1557 | OBJFILE, store info about the section into INFO. | |
1558 | If the section is compressed, uncompress it before returning. */ | |
c906108c | 1559 | |
dce234bc PP |
1560 | static void |
1561 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1562 | { |
dce234bc PP |
1563 | bfd *abfd = objfile->obfd; |
1564 | asection *sectp = info->asection; | |
1565 | gdb_byte *buf, *retbuf; | |
1566 | unsigned char header[4]; | |
c906108c | 1567 | |
be391dca TT |
1568 | if (info->readin) |
1569 | return; | |
dce234bc | 1570 | info->buffer = NULL; |
b315ab21 | 1571 | info->map_addr = NULL; |
be391dca | 1572 | info->readin = 1; |
188dd5d6 | 1573 | |
9e0ac564 | 1574 | if (dwarf2_section_empty_p (info)) |
dce234bc | 1575 | return; |
c906108c | 1576 | |
dce234bc PP |
1577 | /* Check if the file has a 4-byte header indicating compression. */ |
1578 | if (info->size > sizeof (header) | |
1579 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
1580 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
1581 | { | |
1582 | /* Upon decompression, update the buffer and its size. */ | |
1583 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
1584 | { | |
1585 | zlib_decompress_section (objfile, sectp, &info->buffer, | |
1586 | &info->size); | |
1587 | return; | |
1588 | } | |
1589 | } | |
4bdf3d34 | 1590 | |
dce234bc PP |
1591 | #ifdef HAVE_MMAP |
1592 | if (pagesize == 0) | |
1593 | pagesize = getpagesize (); | |
2e276125 | 1594 | |
dce234bc PP |
1595 | /* Only try to mmap sections which are large enough: we don't want to |
1596 | waste space due to fragmentation. Also, only try mmap for sections | |
1597 | without relocations. */ | |
1598 | ||
1599 | if (info->size > 4 * pagesize && (sectp->flags & SEC_RELOC) == 0) | |
1600 | { | |
b315ab21 TG |
1601 | info->buffer = bfd_mmap (abfd, 0, info->size, PROT_READ, |
1602 | MAP_PRIVATE, sectp->filepos, | |
1603 | &info->map_addr, &info->map_len); | |
dce234bc | 1604 | |
b315ab21 | 1605 | if ((caddr_t)info->buffer != MAP_FAILED) |
dce234bc | 1606 | { |
be391dca | 1607 | #if HAVE_POSIX_MADVISE |
b315ab21 | 1608 | posix_madvise (info->map_addr, info->map_len, POSIX_MADV_WILLNEED); |
be391dca | 1609 | #endif |
dce234bc PP |
1610 | return; |
1611 | } | |
1612 | } | |
1613 | #endif | |
1614 | ||
1615 | /* If we get here, we are a normal, not-compressed section. */ | |
1616 | info->buffer = buf | |
1617 | = obstack_alloc (&objfile->objfile_obstack, info->size); | |
1618 | ||
1619 | /* When debugging .o files, we may need to apply relocations; see | |
1620 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1621 | We never compress sections in .o files, so we only need to | |
1622 | try this when the section is not compressed. */ | |
ac8035ab | 1623 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1624 | if (retbuf != NULL) |
1625 | { | |
1626 | info->buffer = retbuf; | |
1627 | return; | |
1628 | } | |
1629 | ||
1630 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1631 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1632 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1633 | bfd_get_filename (abfd)); | |
1634 | } | |
1635 | ||
9e0ac564 TT |
1636 | /* A helper function that returns the size of a section in a safe way. |
1637 | If you are positive that the section has been read before using the | |
1638 | size, then it is safe to refer to the dwarf2_section_info object's | |
1639 | "size" field directly. In other cases, you must call this | |
1640 | function, because for compressed sections the size field is not set | |
1641 | correctly until the section has been read. */ | |
1642 | ||
1643 | static bfd_size_type | |
1644 | dwarf2_section_size (struct objfile *objfile, | |
1645 | struct dwarf2_section_info *info) | |
1646 | { | |
1647 | if (!info->readin) | |
1648 | dwarf2_read_section (objfile, info); | |
1649 | return info->size; | |
1650 | } | |
1651 | ||
dce234bc | 1652 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 1653 | SECTION_NAME. */ |
af34e669 | 1654 | |
dce234bc | 1655 | void |
3017a003 TG |
1656 | dwarf2_get_section_info (struct objfile *objfile, |
1657 | enum dwarf2_section_enum sect, | |
dce234bc PP |
1658 | asection **sectp, gdb_byte **bufp, |
1659 | bfd_size_type *sizep) | |
1660 | { | |
1661 | struct dwarf2_per_objfile *data | |
1662 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
1663 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
1664 | |
1665 | /* We may see an objfile without any DWARF, in which case we just | |
1666 | return nothing. */ | |
1667 | if (data == NULL) | |
1668 | { | |
1669 | *sectp = NULL; | |
1670 | *bufp = NULL; | |
1671 | *sizep = 0; | |
1672 | return; | |
1673 | } | |
3017a003 TG |
1674 | switch (sect) |
1675 | { | |
1676 | case DWARF2_DEBUG_FRAME: | |
1677 | info = &data->frame; | |
1678 | break; | |
1679 | case DWARF2_EH_FRAME: | |
1680 | info = &data->eh_frame; | |
1681 | break; | |
1682 | default: | |
1683 | gdb_assert_not_reached ("unexpected section"); | |
1684 | } | |
dce234bc | 1685 | |
9e0ac564 | 1686 | dwarf2_read_section (objfile, info); |
dce234bc PP |
1687 | |
1688 | *sectp = info->asection; | |
1689 | *bufp = info->buffer; | |
1690 | *sizep = info->size; | |
1691 | } | |
1692 | ||
9291a0cd | 1693 | \f |
7b9f3c50 DE |
1694 | /* DWARF quick_symbols_functions support. */ |
1695 | ||
1696 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
1697 | unique line tables, so we maintain a separate table of all .debug_line | |
1698 | derived entries to support the sharing. | |
1699 | All the quick functions need is the list of file names. We discard the | |
1700 | line_header when we're done and don't need to record it here. */ | |
1701 | struct quick_file_names | |
1702 | { | |
1703 | /* The offset in .debug_line of the line table. We hash on this. */ | |
1704 | unsigned int offset; | |
1705 | ||
1706 | /* The number of entries in file_names, real_names. */ | |
1707 | unsigned int num_file_names; | |
1708 | ||
1709 | /* The file names from the line table, after being run through | |
1710 | file_full_name. */ | |
1711 | const char **file_names; | |
1712 | ||
1713 | /* The file names from the line table after being run through | |
1714 | gdb_realpath. These are computed lazily. */ | |
1715 | const char **real_names; | |
1716 | }; | |
1717 | ||
1718 | /* When using the index (and thus not using psymtabs), each CU has an | |
1719 | object of this type. This is used to hold information needed by | |
1720 | the various "quick" methods. */ | |
1721 | struct dwarf2_per_cu_quick_data | |
1722 | { | |
1723 | /* The file table. This can be NULL if there was no file table | |
1724 | or it's currently not read in. | |
1725 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
1726 | struct quick_file_names *file_names; | |
1727 | ||
1728 | /* The corresponding symbol table. This is NULL if symbols for this | |
1729 | CU have not yet been read. */ | |
1730 | struct symtab *symtab; | |
1731 | ||
1732 | /* A temporary mark bit used when iterating over all CUs in | |
1733 | expand_symtabs_matching. */ | |
1734 | unsigned int mark : 1; | |
1735 | ||
1736 | /* True if we've tried to read the file table and found there isn't one. | |
1737 | There will be no point in trying to read it again next time. */ | |
1738 | unsigned int no_file_data : 1; | |
1739 | }; | |
1740 | ||
1741 | /* Hash function for a quick_file_names. */ | |
1742 | ||
1743 | static hashval_t | |
1744 | hash_file_name_entry (const void *e) | |
1745 | { | |
1746 | const struct quick_file_names *file_data = e; | |
1747 | ||
1748 | return file_data->offset; | |
1749 | } | |
1750 | ||
1751 | /* Equality function for a quick_file_names. */ | |
1752 | ||
1753 | static int | |
1754 | eq_file_name_entry (const void *a, const void *b) | |
1755 | { | |
1756 | const struct quick_file_names *ea = a; | |
1757 | const struct quick_file_names *eb = b; | |
1758 | ||
1759 | return ea->offset == eb->offset; | |
1760 | } | |
1761 | ||
1762 | /* Delete function for a quick_file_names. */ | |
1763 | ||
1764 | static void | |
1765 | delete_file_name_entry (void *e) | |
1766 | { | |
1767 | struct quick_file_names *file_data = e; | |
1768 | int i; | |
1769 | ||
1770 | for (i = 0; i < file_data->num_file_names; ++i) | |
1771 | { | |
1772 | xfree ((void*) file_data->file_names[i]); | |
1773 | if (file_data->real_names) | |
1774 | xfree ((void*) file_data->real_names[i]); | |
1775 | } | |
1776 | ||
1777 | /* The space for the struct itself lives on objfile_obstack, | |
1778 | so we don't free it here. */ | |
1779 | } | |
1780 | ||
1781 | /* Create a quick_file_names hash table. */ | |
1782 | ||
1783 | static htab_t | |
1784 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
1785 | { | |
1786 | return htab_create_alloc (nr_initial_entries, | |
1787 | hash_file_name_entry, eq_file_name_entry, | |
1788 | delete_file_name_entry, xcalloc, xfree); | |
1789 | } | |
9291a0cd TT |
1790 | |
1791 | /* Read in the symbols for PER_CU. OBJFILE is the objfile from which | |
1792 | this CU came. */ | |
2fdf6df6 | 1793 | |
9291a0cd TT |
1794 | static void |
1795 | dw2_do_instantiate_symtab (struct objfile *objfile, | |
1796 | struct dwarf2_per_cu_data *per_cu) | |
1797 | { | |
1798 | struct cleanup *back_to; | |
1799 | ||
1800 | back_to = make_cleanup (dwarf2_release_queue, NULL); | |
1801 | ||
1802 | queue_comp_unit (per_cu, objfile); | |
1803 | ||
1804 | if (per_cu->from_debug_types) | |
1805 | read_signatured_type_at_offset (objfile, per_cu->offset); | |
1806 | else | |
1807 | load_full_comp_unit (per_cu, objfile); | |
1808 | ||
1809 | process_queue (objfile); | |
1810 | ||
1811 | /* Age the cache, releasing compilation units that have not | |
1812 | been used recently. */ | |
1813 | age_cached_comp_units (); | |
1814 | ||
1815 | do_cleanups (back_to); | |
1816 | } | |
1817 | ||
1818 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
1819 | the objfile from which this CU came. Returns the resulting symbol | |
1820 | table. */ | |
2fdf6df6 | 1821 | |
9291a0cd TT |
1822 | static struct symtab * |
1823 | dw2_instantiate_symtab (struct objfile *objfile, | |
1824 | struct dwarf2_per_cu_data *per_cu) | |
1825 | { | |
1826 | if (!per_cu->v.quick->symtab) | |
1827 | { | |
1828 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
1829 | increment_reading_symtab (); | |
1830 | dw2_do_instantiate_symtab (objfile, per_cu); | |
1831 | do_cleanups (back_to); | |
1832 | } | |
1833 | return per_cu->v.quick->symtab; | |
1834 | } | |
1835 | ||
1fd400ff | 1836 | /* Return the CU given its index. */ |
2fdf6df6 | 1837 | |
1fd400ff TT |
1838 | static struct dwarf2_per_cu_data * |
1839 | dw2_get_cu (int index) | |
1840 | { | |
1841 | if (index >= dwarf2_per_objfile->n_comp_units) | |
1842 | { | |
1843 | index -= dwarf2_per_objfile->n_comp_units; | |
1844 | return dwarf2_per_objfile->type_comp_units[index]; | |
1845 | } | |
1846 | return dwarf2_per_objfile->all_comp_units[index]; | |
1847 | } | |
1848 | ||
9291a0cd TT |
1849 | /* A helper function that knows how to read a 64-bit value in a way |
1850 | that doesn't make gdb die. Returns 1 if the conversion went ok, 0 | |
1851 | otherwise. */ | |
2fdf6df6 | 1852 | |
9291a0cd TT |
1853 | static int |
1854 | extract_cu_value (const char *bytes, ULONGEST *result) | |
1855 | { | |
1856 | if (sizeof (ULONGEST) < 8) | |
1857 | { | |
1858 | int i; | |
1859 | ||
1860 | /* Ignore the upper 4 bytes if they are all zero. */ | |
1861 | for (i = 0; i < 4; ++i) | |
1862 | if (bytes[i + 4] != 0) | |
1863 | return 0; | |
1864 | ||
1865 | *result = extract_unsigned_integer (bytes, 4, BFD_ENDIAN_LITTLE); | |
1866 | } | |
1867 | else | |
1868 | *result = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
1869 | return 1; | |
1870 | } | |
1871 | ||
1872 | /* Read the CU list from the mapped index, and use it to create all | |
1873 | the CU objects for this objfile. Return 0 if something went wrong, | |
1874 | 1 if everything went ok. */ | |
2fdf6df6 | 1875 | |
9291a0cd | 1876 | static int |
1fd400ff TT |
1877 | create_cus_from_index (struct objfile *objfile, const gdb_byte *cu_list, |
1878 | offset_type cu_list_elements) | |
9291a0cd TT |
1879 | { |
1880 | offset_type i; | |
9291a0cd TT |
1881 | |
1882 | dwarf2_per_objfile->n_comp_units = cu_list_elements / 2; | |
1883 | dwarf2_per_objfile->all_comp_units | |
1884 | = obstack_alloc (&objfile->objfile_obstack, | |
1885 | dwarf2_per_objfile->n_comp_units | |
1886 | * sizeof (struct dwarf2_per_cu_data *)); | |
1887 | ||
1888 | for (i = 0; i < cu_list_elements; i += 2) | |
1889 | { | |
1890 | struct dwarf2_per_cu_data *the_cu; | |
1891 | ULONGEST offset, length; | |
1892 | ||
1893 | if (!extract_cu_value (cu_list, &offset) | |
1894 | || !extract_cu_value (cu_list + 8, &length)) | |
1895 | return 0; | |
1896 | cu_list += 2 * 8; | |
1897 | ||
1898 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1899 | struct dwarf2_per_cu_data); | |
1900 | the_cu->offset = offset; | |
1901 | the_cu->length = length; | |
1902 | the_cu->objfile = objfile; | |
1903 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1904 | struct dwarf2_per_cu_quick_data); | |
1905 | dwarf2_per_objfile->all_comp_units[i / 2] = the_cu; | |
1906 | } | |
1907 | ||
1908 | return 1; | |
1909 | } | |
1910 | ||
1fd400ff | 1911 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 1912 | |
1fd400ff | 1913 | static int |
673bfd45 DE |
1914 | create_signatured_type_table_from_index (struct objfile *objfile, |
1915 | const gdb_byte *bytes, | |
1916 | offset_type elements) | |
1fd400ff TT |
1917 | { |
1918 | offset_type i; | |
673bfd45 | 1919 | htab_t sig_types_hash; |
1fd400ff TT |
1920 | |
1921 | dwarf2_per_objfile->n_type_comp_units = elements / 3; | |
1922 | dwarf2_per_objfile->type_comp_units | |
1923 | = obstack_alloc (&objfile->objfile_obstack, | |
1924 | dwarf2_per_objfile->n_type_comp_units | |
1925 | * sizeof (struct dwarf2_per_cu_data *)); | |
1926 | ||
673bfd45 | 1927 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
1928 | |
1929 | for (i = 0; i < elements; i += 3) | |
1930 | { | |
1931 | struct signatured_type *type_sig; | |
1932 | ULONGEST offset, type_offset, signature; | |
1933 | void **slot; | |
1934 | ||
1935 | if (!extract_cu_value (bytes, &offset) | |
1936 | || !extract_cu_value (bytes + 8, &type_offset)) | |
1937 | return 0; | |
1938 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); | |
1939 | bytes += 3 * 8; | |
1940 | ||
1941 | type_sig = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1942 | struct signatured_type); | |
1943 | type_sig->signature = signature; | |
1fd400ff TT |
1944 | type_sig->type_offset = type_offset; |
1945 | type_sig->per_cu.from_debug_types = 1; | |
1946 | type_sig->per_cu.offset = offset; | |
1947 | type_sig->per_cu.objfile = objfile; | |
1948 | type_sig->per_cu.v.quick | |
1949 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1950 | struct dwarf2_per_cu_quick_data); | |
1951 | ||
673bfd45 | 1952 | slot = htab_find_slot (sig_types_hash, type_sig, INSERT); |
1fd400ff TT |
1953 | *slot = type_sig; |
1954 | ||
1955 | dwarf2_per_objfile->type_comp_units[i / 3] = &type_sig->per_cu; | |
1956 | } | |
1957 | ||
673bfd45 | 1958 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
1959 | |
1960 | return 1; | |
1961 | } | |
1962 | ||
9291a0cd TT |
1963 | /* Read the address map data from the mapped index, and use it to |
1964 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 1965 | |
9291a0cd TT |
1966 | static void |
1967 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
1968 | { | |
1969 | const gdb_byte *iter, *end; | |
1970 | struct obstack temp_obstack; | |
1971 | struct addrmap *mutable_map; | |
1972 | struct cleanup *cleanup; | |
1973 | CORE_ADDR baseaddr; | |
1974 | ||
1975 | obstack_init (&temp_obstack); | |
1976 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
1977 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
1978 | ||
1979 | iter = index->address_table; | |
1980 | end = iter + index->address_table_size; | |
1981 | ||
1982 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
1983 | ||
1984 | while (iter < end) | |
1985 | { | |
1986 | ULONGEST hi, lo, cu_index; | |
1987 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
1988 | iter += 8; | |
1989 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
1990 | iter += 8; | |
1991 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
1992 | iter += 4; | |
1993 | ||
1994 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
1fd400ff | 1995 | dw2_get_cu (cu_index)); |
9291a0cd TT |
1996 | } |
1997 | ||
1998 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
1999 | &objfile->objfile_obstack); | |
2000 | do_cleanups (cleanup); | |
2001 | } | |
2002 | ||
59d7bcaf JK |
2003 | /* The hash function for strings in the mapped index. This is the same as |
2004 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2005 | implementation. This is necessary because the hash function is tied to the | |
2006 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2007 | SYMBOL_HASH_NEXT. |
2008 | ||
2009 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2010 | |
9291a0cd | 2011 | static hashval_t |
559a7a62 | 2012 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2013 | { |
2014 | const unsigned char *str = (const unsigned char *) p; | |
2015 | hashval_t r = 0; | |
2016 | unsigned char c; | |
2017 | ||
2018 | while ((c = *str++) != 0) | |
559a7a62 JK |
2019 | { |
2020 | if (index_version >= 5) | |
2021 | c = tolower (c); | |
2022 | r = r * 67 + c - 113; | |
2023 | } | |
9291a0cd TT |
2024 | |
2025 | return r; | |
2026 | } | |
2027 | ||
2028 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2029 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2030 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2031 | |
9291a0cd TT |
2032 | static int |
2033 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2034 | offset_type **vec_out) | |
2035 | { | |
0cf03b49 JK |
2036 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2037 | offset_type hash; | |
9291a0cd | 2038 | offset_type slot, step; |
559a7a62 | 2039 | int (*cmp) (const char *, const char *); |
9291a0cd | 2040 | |
0cf03b49 JK |
2041 | if (current_language->la_language == language_cplus |
2042 | || current_language->la_language == language_java | |
2043 | || current_language->la_language == language_fortran) | |
2044 | { | |
2045 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2046 | not contain any. */ | |
2047 | const char *paren = strchr (name, '('); | |
2048 | ||
2049 | if (paren) | |
2050 | { | |
2051 | char *dup; | |
2052 | ||
2053 | dup = xmalloc (paren - name + 1); | |
2054 | memcpy (dup, name, paren - name); | |
2055 | dup[paren - name] = 0; | |
2056 | ||
2057 | make_cleanup (xfree, dup); | |
2058 | name = dup; | |
2059 | } | |
2060 | } | |
2061 | ||
559a7a62 JK |
2062 | /* Index version 4 did not support case insensitive searches. But the |
2063 | indexes for case insensitive languages are built in lowercase, therefore | |
2064 | simulate our NAME being searched is also lowercased. */ | |
2065 | hash = mapped_index_string_hash ((index->version == 4 | |
2066 | && case_sensitivity == case_sensitive_off | |
2067 | ? 5 : index->version), | |
2068 | name); | |
2069 | ||
3876f04e DE |
2070 | slot = hash & (index->symbol_table_slots - 1); |
2071 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2072 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2073 | |
2074 | for (;;) | |
2075 | { | |
2076 | /* Convert a slot number to an offset into the table. */ | |
2077 | offset_type i = 2 * slot; | |
2078 | const char *str; | |
3876f04e | 2079 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2080 | { |
2081 | do_cleanups (back_to); | |
2082 | return 0; | |
2083 | } | |
9291a0cd | 2084 | |
3876f04e | 2085 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 2086 | if (!cmp (name, str)) |
9291a0cd TT |
2087 | { |
2088 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2089 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 2090 | do_cleanups (back_to); |
9291a0cd TT |
2091 | return 1; |
2092 | } | |
2093 | ||
3876f04e | 2094 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2095 | } |
2096 | } | |
2097 | ||
2098 | /* Read the index file. If everything went ok, initialize the "quick" | |
2099 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
2fdf6df6 | 2100 | |
9291a0cd TT |
2101 | static int |
2102 | dwarf2_read_index (struct objfile *objfile) | |
2103 | { | |
9291a0cd TT |
2104 | char *addr; |
2105 | struct mapped_index *map; | |
b3b272e1 | 2106 | offset_type *metadata; |
ac0b195c KW |
2107 | const gdb_byte *cu_list; |
2108 | const gdb_byte *types_list = NULL; | |
2109 | offset_type version, cu_list_elements; | |
2110 | offset_type types_list_elements = 0; | |
1fd400ff | 2111 | int i; |
9291a0cd | 2112 | |
9e0ac564 | 2113 | if (dwarf2_section_empty_p (&dwarf2_per_objfile->gdb_index)) |
9291a0cd | 2114 | return 0; |
82430852 JK |
2115 | |
2116 | /* Older elfutils strip versions could keep the section in the main | |
2117 | executable while splitting it for the separate debug info file. */ | |
2118 | if ((bfd_get_file_flags (dwarf2_per_objfile->gdb_index.asection) | |
2119 | & SEC_HAS_CONTENTS) == 0) | |
2120 | return 0; | |
2121 | ||
9291a0cd TT |
2122 | dwarf2_read_section (objfile, &dwarf2_per_objfile->gdb_index); |
2123 | ||
2124 | addr = dwarf2_per_objfile->gdb_index.buffer; | |
2125 | /* Version check. */ | |
1fd400ff | 2126 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2127 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2128 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2129 | contained incomplete addrmap. So, it seems better to just ignore such |
559a7a62 JK |
2130 | indices. Index version 4 uses a different hash function than index |
2131 | version 5 and later. */ | |
831adc1f | 2132 | if (version < 4) |
9291a0cd | 2133 | return 0; |
594e8718 JK |
2134 | /* Indexes with higher version than the one supported by GDB may be no |
2135 | longer backward compatible. */ | |
559a7a62 | 2136 | if (version > 5) |
594e8718 | 2137 | return 0; |
9291a0cd TT |
2138 | |
2139 | map = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct mapped_index); | |
559a7a62 | 2140 | map->version = version; |
b3b272e1 | 2141 | map->total_size = dwarf2_per_objfile->gdb_index.size; |
9291a0cd TT |
2142 | |
2143 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
2144 | |
2145 | i = 0; | |
2146 | cu_list = addr + MAYBE_SWAP (metadata[i]); | |
2147 | cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
9291a0cd | 2148 | / 8); |
1fd400ff TT |
2149 | ++i; |
2150 | ||
987d643c TT |
2151 | types_list = addr + MAYBE_SWAP (metadata[i]); |
2152 | types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2153 | - MAYBE_SWAP (metadata[i])) | |
2154 | / 8); | |
2155 | ++i; | |
1fd400ff TT |
2156 | |
2157 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
2158 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
2159 | - MAYBE_SWAP (metadata[i])); | |
2160 | ++i; | |
2161 | ||
3876f04e DE |
2162 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
2163 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
2164 | - MAYBE_SWAP (metadata[i])) | |
2165 | / (2 * sizeof (offset_type))); | |
1fd400ff | 2166 | ++i; |
9291a0cd | 2167 | |
1fd400ff TT |
2168 | map->constant_pool = addr + MAYBE_SWAP (metadata[i]); |
2169 | ||
2170 | if (!create_cus_from_index (objfile, cu_list, cu_list_elements)) | |
2171 | return 0; | |
2172 | ||
987d643c | 2173 | if (types_list_elements |
673bfd45 DE |
2174 | && !create_signatured_type_table_from_index (objfile, types_list, |
2175 | types_list_elements)) | |
9291a0cd TT |
2176 | return 0; |
2177 | ||
2178 | create_addrmap_from_index (objfile, map); | |
2179 | ||
2180 | dwarf2_per_objfile->index_table = map; | |
2181 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
2182 | dwarf2_per_objfile->quick_file_names_table = |
2183 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
2184 | |
2185 | return 1; | |
2186 | } | |
2187 | ||
2188 | /* A helper for the "quick" functions which sets the global | |
2189 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 2190 | |
9291a0cd TT |
2191 | static void |
2192 | dw2_setup (struct objfile *objfile) | |
2193 | { | |
2194 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
2195 | gdb_assert (dwarf2_per_objfile); | |
2196 | } | |
2197 | ||
2198 | /* A helper for the "quick" functions which attempts to read the line | |
2199 | table for THIS_CU. */ | |
2fdf6df6 | 2200 | |
7b9f3c50 DE |
2201 | static struct quick_file_names * |
2202 | dw2_get_file_names (struct objfile *objfile, | |
2203 | struct dwarf2_per_cu_data *this_cu) | |
9291a0cd TT |
2204 | { |
2205 | bfd *abfd = objfile->obfd; | |
7b9f3c50 | 2206 | struct line_header *lh; |
9291a0cd TT |
2207 | struct attribute *attr; |
2208 | struct cleanup *cleanups; | |
2209 | struct die_info *comp_unit_die; | |
36374493 | 2210 | struct dwarf2_section_info* sec; |
9291a0cd TT |
2211 | gdb_byte *beg_of_comp_unit, *info_ptr, *buffer; |
2212 | int has_children, i; | |
2213 | struct dwarf2_cu cu; | |
2214 | unsigned int bytes_read, buffer_size; | |
2215 | struct die_reader_specs reader_specs; | |
2216 | char *name, *comp_dir; | |
7b9f3c50 DE |
2217 | void **slot; |
2218 | struct quick_file_names *qfn; | |
2219 | unsigned int line_offset; | |
9291a0cd | 2220 | |
7b9f3c50 DE |
2221 | if (this_cu->v.quick->file_names != NULL) |
2222 | return this_cu->v.quick->file_names; | |
2223 | /* If we know there is no line data, no point in looking again. */ | |
2224 | if (this_cu->v.quick->no_file_data) | |
2225 | return NULL; | |
9291a0cd | 2226 | |
9816fde3 | 2227 | init_one_comp_unit (&cu, objfile); |
9291a0cd TT |
2228 | cleanups = make_cleanup (free_stack_comp_unit, &cu); |
2229 | ||
36374493 DE |
2230 | if (this_cu->from_debug_types) |
2231 | sec = &dwarf2_per_objfile->types; | |
2232 | else | |
2233 | sec = &dwarf2_per_objfile->info; | |
2234 | dwarf2_read_section (objfile, sec); | |
2235 | buffer_size = sec->size; | |
2236 | buffer = sec->buffer; | |
9291a0cd TT |
2237 | info_ptr = buffer + this_cu->offset; |
2238 | beg_of_comp_unit = info_ptr; | |
2239 | ||
2240 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, | |
2241 | buffer, buffer_size, | |
2242 | abfd); | |
2243 | ||
2244 | /* Complete the cu_header. */ | |
2245 | cu.header.offset = beg_of_comp_unit - buffer; | |
2246 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; | |
2247 | ||
2248 | this_cu->cu = &cu; | |
2249 | cu.per_cu = this_cu; | |
2250 | ||
2251 | dwarf2_read_abbrevs (abfd, &cu); | |
2252 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
2253 | ||
2254 | if (this_cu->from_debug_types) | |
2255 | info_ptr += 8 /*signature*/ + cu.header.offset_size; | |
2256 | init_cu_die_reader (&reader_specs, &cu); | |
e8e80198 MS |
2257 | read_full_die (&reader_specs, &comp_unit_die, info_ptr, |
2258 | &has_children); | |
9291a0cd | 2259 | |
7b9f3c50 DE |
2260 | lh = NULL; |
2261 | slot = NULL; | |
2262 | line_offset = 0; | |
9291a0cd TT |
2263 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, &cu); |
2264 | if (attr) | |
2265 | { | |
7b9f3c50 DE |
2266 | struct quick_file_names find_entry; |
2267 | ||
2268 | line_offset = DW_UNSND (attr); | |
2269 | ||
2270 | /* We may have already read in this line header (TU line header sharing). | |
2271 | If we have we're done. */ | |
2272 | find_entry.offset = line_offset; | |
2273 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, | |
2274 | &find_entry, INSERT); | |
2275 | if (*slot != NULL) | |
2276 | { | |
2277 | do_cleanups (cleanups); | |
2278 | this_cu->v.quick->file_names = *slot; | |
2279 | return *slot; | |
2280 | } | |
2281 | ||
9291a0cd TT |
2282 | lh = dwarf_decode_line_header (line_offset, abfd, &cu); |
2283 | } | |
2284 | if (lh == NULL) | |
2285 | { | |
2286 | do_cleanups (cleanups); | |
7b9f3c50 DE |
2287 | this_cu->v.quick->no_file_data = 1; |
2288 | return NULL; | |
9291a0cd TT |
2289 | } |
2290 | ||
7b9f3c50 DE |
2291 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
2292 | qfn->offset = line_offset; | |
2293 | gdb_assert (slot != NULL); | |
2294 | *slot = qfn; | |
9291a0cd | 2295 | |
7b9f3c50 | 2296 | find_file_and_directory (comp_unit_die, &cu, &name, &comp_dir); |
9291a0cd | 2297 | |
7b9f3c50 DE |
2298 | qfn->num_file_names = lh->num_file_names; |
2299 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
2300 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 2301 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
2302 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
2303 | qfn->real_names = NULL; | |
9291a0cd | 2304 | |
7b9f3c50 | 2305 | free_line_header (lh); |
9291a0cd | 2306 | do_cleanups (cleanups); |
7b9f3c50 DE |
2307 | |
2308 | this_cu->v.quick->file_names = qfn; | |
2309 | return qfn; | |
9291a0cd TT |
2310 | } |
2311 | ||
2312 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 2313 | real path for a given file name from the line table. */ |
2fdf6df6 | 2314 | |
9291a0cd | 2315 | static const char * |
7b9f3c50 DE |
2316 | dw2_get_real_path (struct objfile *objfile, |
2317 | struct quick_file_names *qfn, int index) | |
9291a0cd | 2318 | { |
7b9f3c50 DE |
2319 | if (qfn->real_names == NULL) |
2320 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2321 | qfn->num_file_names, sizeof (char *)); | |
9291a0cd | 2322 | |
7b9f3c50 DE |
2323 | if (qfn->real_names[index] == NULL) |
2324 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 2325 | |
7b9f3c50 | 2326 | return qfn->real_names[index]; |
9291a0cd TT |
2327 | } |
2328 | ||
2329 | static struct symtab * | |
2330 | dw2_find_last_source_symtab (struct objfile *objfile) | |
2331 | { | |
2332 | int index; | |
ae2de4f8 | 2333 | |
9291a0cd TT |
2334 | dw2_setup (objfile); |
2335 | index = dwarf2_per_objfile->n_comp_units - 1; | |
1fd400ff | 2336 | return dw2_instantiate_symtab (objfile, dw2_get_cu (index)); |
9291a0cd TT |
2337 | } |
2338 | ||
7b9f3c50 DE |
2339 | /* Traversal function for dw2_forget_cached_source_info. */ |
2340 | ||
2341 | static int | |
2342 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 2343 | { |
7b9f3c50 | 2344 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 2345 | |
7b9f3c50 | 2346 | if (file_data->real_names) |
9291a0cd | 2347 | { |
7b9f3c50 | 2348 | int i; |
9291a0cd | 2349 | |
7b9f3c50 | 2350 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 2351 | { |
7b9f3c50 DE |
2352 | xfree ((void*) file_data->real_names[i]); |
2353 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
2354 | } |
2355 | } | |
7b9f3c50 DE |
2356 | |
2357 | return 1; | |
2358 | } | |
2359 | ||
2360 | static void | |
2361 | dw2_forget_cached_source_info (struct objfile *objfile) | |
2362 | { | |
2363 | dw2_setup (objfile); | |
2364 | ||
2365 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
2366 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
2367 | } |
2368 | ||
2369 | static int | |
2370 | dw2_lookup_symtab (struct objfile *objfile, const char *name, | |
2371 | const char *full_path, const char *real_path, | |
2372 | struct symtab **result) | |
2373 | { | |
2374 | int i; | |
2375 | int check_basename = lbasename (name) == name; | |
2376 | struct dwarf2_per_cu_data *base_cu = NULL; | |
2377 | ||
2378 | dw2_setup (objfile); | |
ae2de4f8 | 2379 | |
1fd400ff TT |
2380 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2381 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2382 | { |
2383 | int j; | |
e254ef6a | 2384 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2385 | struct quick_file_names *file_data; |
9291a0cd | 2386 | |
e254ef6a | 2387 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2388 | continue; |
2389 | ||
7b9f3c50 DE |
2390 | file_data = dw2_get_file_names (objfile, per_cu); |
2391 | if (file_data == NULL) | |
9291a0cd TT |
2392 | continue; |
2393 | ||
7b9f3c50 | 2394 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2395 | { |
7b9f3c50 | 2396 | const char *this_name = file_data->file_names[j]; |
9291a0cd TT |
2397 | |
2398 | if (FILENAME_CMP (name, this_name) == 0) | |
2399 | { | |
e254ef6a | 2400 | *result = dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2401 | return 1; |
2402 | } | |
2403 | ||
2404 | if (check_basename && ! base_cu | |
2405 | && FILENAME_CMP (lbasename (this_name), name) == 0) | |
e254ef6a | 2406 | base_cu = per_cu; |
9291a0cd TT |
2407 | |
2408 | if (full_path != NULL) | |
2409 | { | |
7b9f3c50 DE |
2410 | const char *this_real_name = dw2_get_real_path (objfile, |
2411 | file_data, j); | |
9291a0cd | 2412 | |
7b9f3c50 DE |
2413 | if (this_real_name != NULL |
2414 | && FILENAME_CMP (full_path, this_real_name) == 0) | |
9291a0cd | 2415 | { |
e254ef6a | 2416 | *result = dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2417 | return 1; |
2418 | } | |
2419 | } | |
2420 | ||
2421 | if (real_path != NULL) | |
2422 | { | |
7b9f3c50 DE |
2423 | const char *this_real_name = dw2_get_real_path (objfile, |
2424 | file_data, j); | |
9291a0cd | 2425 | |
7b9f3c50 DE |
2426 | if (this_real_name != NULL |
2427 | && FILENAME_CMP (real_path, this_real_name) == 0) | |
9291a0cd | 2428 | { |
74dd2ca6 DE |
2429 | *result = dw2_instantiate_symtab (objfile, per_cu); |
2430 | return 1; | |
9291a0cd TT |
2431 | } |
2432 | } | |
2433 | } | |
2434 | } | |
2435 | ||
2436 | if (base_cu) | |
2437 | { | |
2438 | *result = dw2_instantiate_symtab (objfile, base_cu); | |
2439 | return 1; | |
2440 | } | |
2441 | ||
2442 | return 0; | |
2443 | } | |
2444 | ||
2445 | static struct symtab * | |
2446 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
2447 | const char *name, domain_enum domain) | |
2448 | { | |
774b6a14 | 2449 | /* We do all the work in the pre_expand_symtabs_matching hook |
9291a0cd TT |
2450 | instead. */ |
2451 | return NULL; | |
2452 | } | |
2453 | ||
2454 | /* A helper function that expands all symtabs that hold an object | |
2455 | named NAME. */ | |
2fdf6df6 | 2456 | |
9291a0cd TT |
2457 | static void |
2458 | dw2_do_expand_symtabs_matching (struct objfile *objfile, const char *name) | |
2459 | { | |
2460 | dw2_setup (objfile); | |
2461 | ||
ae2de4f8 | 2462 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd TT |
2463 | if (dwarf2_per_objfile->index_table) |
2464 | { | |
2465 | offset_type *vec; | |
2466 | ||
2467 | if (find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2468 | name, &vec)) | |
2469 | { | |
2470 | offset_type i, len = MAYBE_SWAP (*vec); | |
2471 | for (i = 0; i < len; ++i) | |
2472 | { | |
2473 | offset_type cu_index = MAYBE_SWAP (vec[i + 1]); | |
e254ef6a | 2474 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (cu_index); |
1fd400ff | 2475 | |
e254ef6a | 2476 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2477 | } |
2478 | } | |
2479 | } | |
2480 | } | |
2481 | ||
774b6a14 TT |
2482 | static void |
2483 | dw2_pre_expand_symtabs_matching (struct objfile *objfile, | |
8903c50d | 2484 | enum block_enum block_kind, const char *name, |
774b6a14 | 2485 | domain_enum domain) |
9291a0cd | 2486 | { |
774b6a14 | 2487 | dw2_do_expand_symtabs_matching (objfile, name); |
9291a0cd TT |
2488 | } |
2489 | ||
2490 | static void | |
2491 | dw2_print_stats (struct objfile *objfile) | |
2492 | { | |
2493 | int i, count; | |
2494 | ||
2495 | dw2_setup (objfile); | |
2496 | count = 0; | |
1fd400ff TT |
2497 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2498 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2499 | { |
e254ef6a | 2500 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2501 | |
e254ef6a | 2502 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
2503 | ++count; |
2504 | } | |
2505 | printf_filtered (_(" Number of unread CUs: %d\n"), count); | |
2506 | } | |
2507 | ||
2508 | static void | |
2509 | dw2_dump (struct objfile *objfile) | |
2510 | { | |
2511 | /* Nothing worth printing. */ | |
2512 | } | |
2513 | ||
2514 | static void | |
2515 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
2516 | struct section_offsets *delta) | |
2517 | { | |
2518 | /* There's nothing to relocate here. */ | |
2519 | } | |
2520 | ||
2521 | static void | |
2522 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
2523 | const char *func_name) | |
2524 | { | |
2525 | dw2_do_expand_symtabs_matching (objfile, func_name); | |
2526 | } | |
2527 | ||
2528 | static void | |
2529 | dw2_expand_all_symtabs (struct objfile *objfile) | |
2530 | { | |
2531 | int i; | |
2532 | ||
2533 | dw2_setup (objfile); | |
1fd400ff TT |
2534 | |
2535 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2536 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2537 | { |
e254ef6a | 2538 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2539 | |
e254ef6a | 2540 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2541 | } |
2542 | } | |
2543 | ||
2544 | static void | |
2545 | dw2_expand_symtabs_with_filename (struct objfile *objfile, | |
2546 | const char *filename) | |
2547 | { | |
2548 | int i; | |
2549 | ||
2550 | dw2_setup (objfile); | |
d4637a04 DE |
2551 | |
2552 | /* We don't need to consider type units here. | |
2553 | This is only called for examining code, e.g. expand_line_sal. | |
2554 | There can be an order of magnitude (or more) more type units | |
2555 | than comp units, and we avoid them if we can. */ | |
2556 | ||
2557 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
2558 | { |
2559 | int j; | |
e254ef6a | 2560 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2561 | struct quick_file_names *file_data; |
9291a0cd | 2562 | |
e254ef6a | 2563 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2564 | continue; |
2565 | ||
7b9f3c50 DE |
2566 | file_data = dw2_get_file_names (objfile, per_cu); |
2567 | if (file_data == NULL) | |
9291a0cd TT |
2568 | continue; |
2569 | ||
7b9f3c50 | 2570 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2571 | { |
7b9f3c50 | 2572 | const char *this_name = file_data->file_names[j]; |
1ef75ecc | 2573 | if (FILENAME_CMP (this_name, filename) == 0) |
9291a0cd | 2574 | { |
e254ef6a | 2575 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2576 | break; |
2577 | } | |
2578 | } | |
2579 | } | |
2580 | } | |
2581 | ||
dd786858 | 2582 | static const char * |
9291a0cd TT |
2583 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
2584 | { | |
e254ef6a | 2585 | struct dwarf2_per_cu_data *per_cu; |
9291a0cd | 2586 | offset_type *vec; |
7b9f3c50 | 2587 | struct quick_file_names *file_data; |
9291a0cd TT |
2588 | |
2589 | dw2_setup (objfile); | |
2590 | ||
ae2de4f8 | 2591 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd TT |
2592 | if (!dwarf2_per_objfile->index_table) |
2593 | return NULL; | |
2594 | ||
2595 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2596 | name, &vec)) | |
2597 | return NULL; | |
2598 | ||
2599 | /* Note that this just looks at the very first one named NAME -- but | |
2600 | actually we are looking for a function. find_main_filename | |
2601 | should be rewritten so that it doesn't require a custom hook. It | |
2602 | could just use the ordinary symbol tables. */ | |
2603 | /* vec[0] is the length, which must always be >0. */ | |
e254ef6a | 2604 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[1])); |
9291a0cd | 2605 | |
7b9f3c50 DE |
2606 | file_data = dw2_get_file_names (objfile, per_cu); |
2607 | if (file_data == NULL) | |
9291a0cd TT |
2608 | return NULL; |
2609 | ||
7b9f3c50 | 2610 | return file_data->file_names[file_data->num_file_names - 1]; |
9291a0cd TT |
2611 | } |
2612 | ||
2613 | static void | |
40658b94 PH |
2614 | dw2_map_matching_symbols (const char * name, domain_enum namespace, |
2615 | struct objfile *objfile, int global, | |
2616 | int (*callback) (struct block *, | |
2617 | struct symbol *, void *), | |
2edb89d3 JK |
2618 | void *data, symbol_compare_ftype *match, |
2619 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 2620 | { |
40658b94 | 2621 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
2622 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
2623 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
2624 | } |
2625 | ||
2626 | static void | |
2627 | dw2_expand_symtabs_matching (struct objfile *objfile, | |
2628 | int (*file_matcher) (const char *, void *), | |
2629 | int (*name_matcher) (const char *, void *), | |
8903c50d | 2630 | enum search_domain kind, |
9291a0cd TT |
2631 | void *data) |
2632 | { | |
2633 | int i; | |
2634 | offset_type iter; | |
4b5246aa | 2635 | struct mapped_index *index; |
9291a0cd TT |
2636 | |
2637 | dw2_setup (objfile); | |
ae2de4f8 DE |
2638 | |
2639 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
2640 | if (!dwarf2_per_objfile->index_table) |
2641 | return; | |
4b5246aa | 2642 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 2643 | |
7b08b9eb JK |
2644 | if (file_matcher != NULL) |
2645 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2646 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
2647 | { | |
2648 | int j; | |
2649 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
2650 | struct quick_file_names *file_data; | |
2651 | ||
2652 | per_cu->v.quick->mark = 0; | |
2653 | if (per_cu->v.quick->symtab) | |
2654 | continue; | |
2655 | ||
2656 | file_data = dw2_get_file_names (objfile, per_cu); | |
2657 | if (file_data == NULL) | |
2658 | continue; | |
2659 | ||
2660 | for (j = 0; j < file_data->num_file_names; ++j) | |
2661 | { | |
2662 | if (file_matcher (file_data->file_names[j], data)) | |
2663 | { | |
2664 | per_cu->v.quick->mark = 1; | |
2665 | break; | |
2666 | } | |
2667 | } | |
2668 | } | |
9291a0cd | 2669 | |
3876f04e | 2670 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
2671 | { |
2672 | offset_type idx = 2 * iter; | |
2673 | const char *name; | |
2674 | offset_type *vec, vec_len, vec_idx; | |
2675 | ||
3876f04e | 2676 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
2677 | continue; |
2678 | ||
3876f04e | 2679 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd TT |
2680 | |
2681 | if (! (*name_matcher) (name, data)) | |
2682 | continue; | |
2683 | ||
2684 | /* The name was matched, now expand corresponding CUs that were | |
2685 | marked. */ | |
4b5246aa | 2686 | vec = (offset_type *) (index->constant_pool |
3876f04e | 2687 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
2688 | vec_len = MAYBE_SWAP (vec[0]); |
2689 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
2690 | { | |
e254ef6a | 2691 | struct dwarf2_per_cu_data *per_cu; |
1fd400ff | 2692 | |
e254ef6a | 2693 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[vec_idx + 1])); |
7b08b9eb | 2694 | if (file_matcher == NULL || per_cu->v.quick->mark) |
e254ef6a | 2695 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2696 | } |
2697 | } | |
2698 | } | |
2699 | ||
2700 | static struct symtab * | |
2701 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
2702 | struct minimal_symbol *msymbol, | |
2703 | CORE_ADDR pc, | |
2704 | struct obj_section *section, | |
2705 | int warn_if_readin) | |
2706 | { | |
2707 | struct dwarf2_per_cu_data *data; | |
2708 | ||
2709 | dw2_setup (objfile); | |
2710 | ||
2711 | if (!objfile->psymtabs_addrmap) | |
2712 | return NULL; | |
2713 | ||
2714 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
2715 | if (!data) | |
2716 | return NULL; | |
2717 | ||
2718 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 2719 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
2720 | paddress (get_objfile_arch (objfile), pc)); |
2721 | ||
2722 | return dw2_instantiate_symtab (objfile, data); | |
2723 | } | |
2724 | ||
9291a0cd | 2725 | static void |
44b13c5a | 2726 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
9291a0cd TT |
2727 | void *data) |
2728 | { | |
2729 | int i; | |
2730 | ||
2731 | dw2_setup (objfile); | |
ae2de4f8 | 2732 | |
1fd400ff TT |
2733 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2734 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2735 | { |
2736 | int j; | |
e254ef6a | 2737 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2738 | struct quick_file_names *file_data; |
9291a0cd | 2739 | |
e254ef6a | 2740 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2741 | continue; |
2742 | ||
7b9f3c50 DE |
2743 | file_data = dw2_get_file_names (objfile, per_cu); |
2744 | if (file_data == NULL) | |
9291a0cd TT |
2745 | continue; |
2746 | ||
7b9f3c50 | 2747 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2748 | { |
7b9f3c50 DE |
2749 | const char *this_real_name = dw2_get_real_path (objfile, file_data, |
2750 | j); | |
2751 | (*fun) (file_data->file_names[j], this_real_name, data); | |
9291a0cd TT |
2752 | } |
2753 | } | |
2754 | } | |
2755 | ||
2756 | static int | |
2757 | dw2_has_symbols (struct objfile *objfile) | |
2758 | { | |
2759 | return 1; | |
2760 | } | |
2761 | ||
2762 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
2763 | { | |
2764 | dw2_has_symbols, | |
2765 | dw2_find_last_source_symtab, | |
2766 | dw2_forget_cached_source_info, | |
2767 | dw2_lookup_symtab, | |
2768 | dw2_lookup_symbol, | |
774b6a14 | 2769 | dw2_pre_expand_symtabs_matching, |
9291a0cd TT |
2770 | dw2_print_stats, |
2771 | dw2_dump, | |
2772 | dw2_relocate, | |
2773 | dw2_expand_symtabs_for_function, | |
2774 | dw2_expand_all_symtabs, | |
2775 | dw2_expand_symtabs_with_filename, | |
2776 | dw2_find_symbol_file, | |
40658b94 | 2777 | dw2_map_matching_symbols, |
9291a0cd TT |
2778 | dw2_expand_symtabs_matching, |
2779 | dw2_find_pc_sect_symtab, | |
9291a0cd TT |
2780 | dw2_map_symbol_filenames |
2781 | }; | |
2782 | ||
2783 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
2784 | file will use psymtabs, or 1 if using the GNU index. */ | |
2785 | ||
2786 | int | |
2787 | dwarf2_initialize_objfile (struct objfile *objfile) | |
2788 | { | |
2789 | /* If we're about to read full symbols, don't bother with the | |
2790 | indices. In this case we also don't care if some other debug | |
2791 | format is making psymtabs, because they are all about to be | |
2792 | expanded anyway. */ | |
2793 | if ((objfile->flags & OBJF_READNOW)) | |
2794 | { | |
2795 | int i; | |
2796 | ||
2797 | dwarf2_per_objfile->using_index = 1; | |
2798 | create_all_comp_units (objfile); | |
1fd400ff | 2799 | create_debug_types_hash_table (objfile); |
7b9f3c50 DE |
2800 | dwarf2_per_objfile->quick_file_names_table = |
2801 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 2802 | |
1fd400ff TT |
2803 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2804 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2805 | { |
e254ef6a | 2806 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2807 | |
e254ef6a DE |
2808 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2809 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
2810 | } |
2811 | ||
2812 | /* Return 1 so that gdb sees the "quick" functions. However, | |
2813 | these functions will be no-ops because we will have expanded | |
2814 | all symtabs. */ | |
2815 | return 1; | |
2816 | } | |
2817 | ||
2818 | if (dwarf2_read_index (objfile)) | |
2819 | return 1; | |
2820 | ||
9291a0cd TT |
2821 | return 0; |
2822 | } | |
2823 | ||
2824 | \f | |
2825 | ||
dce234bc PP |
2826 | /* Build a partial symbol table. */ |
2827 | ||
2828 | void | |
f29dff0a | 2829 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 2830 | { |
f29dff0a | 2831 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
2832 | { |
2833 | init_psymbol_list (objfile, 1024); | |
2834 | } | |
2835 | ||
d146bf1e | 2836 | dwarf2_build_psymtabs_hard (objfile); |
c906108c | 2837 | } |
c906108c | 2838 | |
45452591 DE |
2839 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
2840 | ||
2841 | static inline int | |
2842 | offset_in_cu_p (const struct comp_unit_head *cu_header, unsigned int offset) | |
2843 | { | |
2844 | unsigned int bottom = cu_header->offset; | |
2845 | unsigned int top = (cu_header->offset | |
2846 | + cu_header->length | |
2847 | + cu_header->initial_length_size); | |
9a619af0 | 2848 | |
45452591 DE |
2849 | return (offset >= bottom && offset < top); |
2850 | } | |
2851 | ||
93311388 DE |
2852 | /* Read in the comp unit header information from the debug_info at info_ptr. |
2853 | NOTE: This leaves members offset, first_die_offset to be filled in | |
2854 | by the caller. */ | |
107d2387 | 2855 | |
fe1b8b76 | 2856 | static gdb_byte * |
107d2387 | 2857 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 2858 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
2859 | { |
2860 | int signed_addr; | |
891d2f0b | 2861 | unsigned int bytes_read; |
c764a876 DE |
2862 | |
2863 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
2864 | cu_header->initial_length_size = bytes_read; | |
2865 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 2866 | info_ptr += bytes_read; |
107d2387 AC |
2867 | cu_header->version = read_2_bytes (abfd, info_ptr); |
2868 | info_ptr += 2; | |
613e1657 | 2869 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
c764a876 | 2870 | &bytes_read); |
613e1657 | 2871 | info_ptr += bytes_read; |
107d2387 AC |
2872 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
2873 | info_ptr += 1; | |
2874 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
2875 | if (signed_addr < 0) | |
8e65ff28 | 2876 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2877 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 2878 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 2879 | |
107d2387 AC |
2880 | return info_ptr; |
2881 | } | |
2882 | ||
fe1b8b76 JB |
2883 | static gdb_byte * |
2884 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
93311388 | 2885 | gdb_byte *buffer, unsigned int buffer_size, |
72bf9492 DJ |
2886 | bfd *abfd) |
2887 | { | |
fe1b8b76 | 2888 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
2889 | |
2890 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
2891 | ||
2dc7f7b3 | 2892 | if (header->version != 2 && header->version != 3 && header->version != 4) |
8a3fe4f8 | 2893 | error (_("Dwarf Error: wrong version in compilation unit header " |
2dc7f7b3 TT |
2894 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, |
2895 | bfd_get_filename (abfd)); | |
72bf9492 | 2896 | |
9e0ac564 TT |
2897 | if (header->abbrev_offset |
2898 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, | |
2899 | &dwarf2_per_objfile->abbrev)) | |
8a3fe4f8 AC |
2900 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
2901 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 | 2902 | (long) header->abbrev_offset, |
93311388 | 2903 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
2904 | bfd_get_filename (abfd)); |
2905 | ||
2906 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
93311388 | 2907 | > buffer + buffer_size) |
8a3fe4f8 AC |
2908 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
2909 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 | 2910 | (long) header->length, |
93311388 | 2911 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
2912 | bfd_get_filename (abfd)); |
2913 | ||
2914 | return info_ptr; | |
2915 | } | |
2916 | ||
348e048f DE |
2917 | /* Read in the types comp unit header information from .debug_types entry at |
2918 | types_ptr. The result is a pointer to one past the end of the header. */ | |
2919 | ||
2920 | static gdb_byte * | |
2921 | read_type_comp_unit_head (struct comp_unit_head *cu_header, | |
2922 | ULONGEST *signature, | |
2923 | gdb_byte *types_ptr, bfd *abfd) | |
2924 | { | |
348e048f DE |
2925 | gdb_byte *initial_types_ptr = types_ptr; |
2926 | ||
6e70227d | 2927 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
fa238c03 | 2928 | &dwarf2_per_objfile->types); |
348e048f DE |
2929 | cu_header->offset = types_ptr - dwarf2_per_objfile->types.buffer; |
2930 | ||
2931 | types_ptr = read_comp_unit_head (cu_header, types_ptr, abfd); | |
2932 | ||
2933 | *signature = read_8_bytes (abfd, types_ptr); | |
2934 | types_ptr += 8; | |
2935 | types_ptr += cu_header->offset_size; | |
2936 | cu_header->first_die_offset = types_ptr - initial_types_ptr; | |
2937 | ||
2938 | return types_ptr; | |
2939 | } | |
2940 | ||
aaa75496 JB |
2941 | /* Allocate a new partial symtab for file named NAME and mark this new |
2942 | partial symtab as being an include of PST. */ | |
2943 | ||
2944 | static void | |
2945 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
2946 | struct objfile *objfile) | |
2947 | { | |
2948 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
2949 | ||
2950 | subpst->section_offsets = pst->section_offsets; | |
2951 | subpst->textlow = 0; | |
2952 | subpst->texthigh = 0; | |
2953 | ||
2954 | subpst->dependencies = (struct partial_symtab **) | |
2955 | obstack_alloc (&objfile->objfile_obstack, | |
2956 | sizeof (struct partial_symtab *)); | |
2957 | subpst->dependencies[0] = pst; | |
2958 | subpst->number_of_dependencies = 1; | |
2959 | ||
2960 | subpst->globals_offset = 0; | |
2961 | subpst->n_global_syms = 0; | |
2962 | subpst->statics_offset = 0; | |
2963 | subpst->n_static_syms = 0; | |
2964 | subpst->symtab = NULL; | |
2965 | subpst->read_symtab = pst->read_symtab; | |
2966 | subpst->readin = 0; | |
2967 | ||
2968 | /* No private part is necessary for include psymtabs. This property | |
2969 | can be used to differentiate between such include psymtabs and | |
10b3939b | 2970 | the regular ones. */ |
58a9656e | 2971 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
2972 | } |
2973 | ||
2974 | /* Read the Line Number Program data and extract the list of files | |
2975 | included by the source file represented by PST. Build an include | |
d85a05f0 | 2976 | partial symtab for each of these included files. */ |
aaa75496 JB |
2977 | |
2978 | static void | |
2979 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
d85a05f0 | 2980 | struct die_info *die, |
aaa75496 JB |
2981 | struct partial_symtab *pst) |
2982 | { | |
2983 | struct objfile *objfile = cu->objfile; | |
2984 | bfd *abfd = objfile->obfd; | |
d85a05f0 DJ |
2985 | struct line_header *lh = NULL; |
2986 | struct attribute *attr; | |
aaa75496 | 2987 | |
d85a05f0 DJ |
2988 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
2989 | if (attr) | |
2990 | { | |
2991 | unsigned int line_offset = DW_UNSND (attr); | |
9a619af0 | 2992 | |
d85a05f0 DJ |
2993 | lh = dwarf_decode_line_header (line_offset, abfd, cu); |
2994 | } | |
aaa75496 JB |
2995 | if (lh == NULL) |
2996 | return; /* No linetable, so no includes. */ | |
2997 | ||
c6da4cef DE |
2998 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
2999 | dwarf_decode_lines (lh, pst->dirname, abfd, cu, pst); | |
aaa75496 JB |
3000 | |
3001 | free_line_header (lh); | |
3002 | } | |
3003 | ||
348e048f DE |
3004 | static hashval_t |
3005 | hash_type_signature (const void *item) | |
3006 | { | |
3007 | const struct signatured_type *type_sig = item; | |
9a619af0 | 3008 | |
348e048f DE |
3009 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
3010 | return type_sig->signature; | |
3011 | } | |
3012 | ||
3013 | static int | |
3014 | eq_type_signature (const void *item_lhs, const void *item_rhs) | |
3015 | { | |
3016 | const struct signatured_type *lhs = item_lhs; | |
3017 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 3018 | |
348e048f DE |
3019 | return lhs->signature == rhs->signature; |
3020 | } | |
3021 | ||
1fd400ff TT |
3022 | /* Allocate a hash table for signatured types. */ |
3023 | ||
3024 | static htab_t | |
673bfd45 | 3025 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
3026 | { |
3027 | return htab_create_alloc_ex (41, | |
3028 | hash_type_signature, | |
3029 | eq_type_signature, | |
3030 | NULL, | |
3031 | &objfile->objfile_obstack, | |
3032 | hashtab_obstack_allocate, | |
3033 | dummy_obstack_deallocate); | |
3034 | } | |
3035 | ||
3036 | /* A helper function to add a signatured type CU to a list. */ | |
3037 | ||
3038 | static int | |
3039 | add_signatured_type_cu_to_list (void **slot, void *datum) | |
3040 | { | |
3041 | struct signatured_type *sigt = *slot; | |
3042 | struct dwarf2_per_cu_data ***datap = datum; | |
3043 | ||
3044 | **datap = &sigt->per_cu; | |
3045 | ++*datap; | |
3046 | ||
3047 | return 1; | |
3048 | } | |
3049 | ||
348e048f DE |
3050 | /* Create the hash table of all entries in the .debug_types section. |
3051 | The result is zero if there is an error (e.g. missing .debug_types section), | |
3052 | otherwise non-zero. */ | |
3053 | ||
3054 | static int | |
3055 | create_debug_types_hash_table (struct objfile *objfile) | |
3056 | { | |
be391dca | 3057 | gdb_byte *info_ptr; |
348e048f | 3058 | htab_t types_htab; |
1fd400ff | 3059 | struct dwarf2_per_cu_data **iter; |
348e048f | 3060 | |
be391dca TT |
3061 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
3062 | info_ptr = dwarf2_per_objfile->types.buffer; | |
3063 | ||
348e048f DE |
3064 | if (info_ptr == NULL) |
3065 | { | |
3066 | dwarf2_per_objfile->signatured_types = NULL; | |
3067 | return 0; | |
3068 | } | |
3069 | ||
673bfd45 | 3070 | types_htab = allocate_signatured_type_table (objfile); |
348e048f DE |
3071 | |
3072 | if (dwarf2_die_debug) | |
3073 | fprintf_unfiltered (gdb_stdlog, "Signatured types:\n"); | |
3074 | ||
3e43a32a MS |
3075 | while (info_ptr < dwarf2_per_objfile->types.buffer |
3076 | + dwarf2_per_objfile->types.size) | |
348e048f DE |
3077 | { |
3078 | unsigned int offset; | |
3079 | unsigned int offset_size; | |
3080 | unsigned int type_offset; | |
3081 | unsigned int length, initial_length_size; | |
3082 | unsigned short version; | |
3083 | ULONGEST signature; | |
3084 | struct signatured_type *type_sig; | |
3085 | void **slot; | |
3086 | gdb_byte *ptr = info_ptr; | |
3087 | ||
3088 | offset = ptr - dwarf2_per_objfile->types.buffer; | |
3089 | ||
3090 | /* We need to read the type's signature in order to build the hash | |
3091 | table, but we don't need to read anything else just yet. */ | |
3092 | ||
3093 | /* Sanity check to ensure entire cu is present. */ | |
3094 | length = read_initial_length (objfile->obfd, ptr, &initial_length_size); | |
3095 | if (ptr + length + initial_length_size | |
3096 | > dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size) | |
3097 | { | |
3098 | complaint (&symfile_complaints, | |
3e43a32a MS |
3099 | _("debug type entry runs off end " |
3100 | "of `.debug_types' section, ignored")); | |
348e048f DE |
3101 | break; |
3102 | } | |
3103 | ||
3104 | offset_size = initial_length_size == 4 ? 4 : 8; | |
3105 | ptr += initial_length_size; | |
3106 | version = bfd_get_16 (objfile->obfd, ptr); | |
3107 | ptr += 2; | |
3108 | ptr += offset_size; /* abbrev offset */ | |
3109 | ptr += 1; /* address size */ | |
3110 | signature = bfd_get_64 (objfile->obfd, ptr); | |
3111 | ptr += 8; | |
3112 | type_offset = read_offset_1 (objfile->obfd, ptr, offset_size); | |
3113 | ||
3114 | type_sig = obstack_alloc (&objfile->objfile_obstack, sizeof (*type_sig)); | |
3115 | memset (type_sig, 0, sizeof (*type_sig)); | |
3116 | type_sig->signature = signature; | |
348e048f | 3117 | type_sig->type_offset = type_offset; |
ca1f3406 | 3118 | type_sig->per_cu.objfile = objfile; |
1fd400ff | 3119 | type_sig->per_cu.from_debug_types = 1; |
b3c8eb43 | 3120 | type_sig->per_cu.offset = offset; |
348e048f DE |
3121 | |
3122 | slot = htab_find_slot (types_htab, type_sig, INSERT); | |
3123 | gdb_assert (slot != NULL); | |
b3c8eb43 JK |
3124 | if (*slot != NULL) |
3125 | { | |
3126 | const struct signatured_type *dup_sig = *slot; | |
3127 | ||
3128 | complaint (&symfile_complaints, | |
3129 | _("debug type entry at offset 0x%x is duplicate to the " | |
3130 | "entry at offset 0x%x, signature 0x%s"), | |
3131 | offset, dup_sig->per_cu.offset, | |
3132 | phex (signature, sizeof (signature))); | |
3133 | gdb_assert (signature == dup_sig->signature); | |
3134 | } | |
348e048f DE |
3135 | *slot = type_sig; |
3136 | ||
3137 | if (dwarf2_die_debug) | |
3138 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", | |
3139 | offset, phex (signature, sizeof (signature))); | |
3140 | ||
3141 | info_ptr = info_ptr + initial_length_size + length; | |
3142 | } | |
3143 | ||
3144 | dwarf2_per_objfile->signatured_types = types_htab; | |
3145 | ||
1fd400ff TT |
3146 | dwarf2_per_objfile->n_type_comp_units = htab_elements (types_htab); |
3147 | dwarf2_per_objfile->type_comp_units | |
3148 | = obstack_alloc (&objfile->objfile_obstack, | |
3149 | dwarf2_per_objfile->n_type_comp_units | |
3150 | * sizeof (struct dwarf2_per_cu_data *)); | |
3151 | iter = &dwarf2_per_objfile->type_comp_units[0]; | |
3152 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_list, &iter); | |
3153 | gdb_assert (iter - &dwarf2_per_objfile->type_comp_units[0] | |
3154 | == dwarf2_per_objfile->n_type_comp_units); | |
3155 | ||
348e048f DE |
3156 | return 1; |
3157 | } | |
3158 | ||
3159 | /* Lookup a signature based type. | |
3160 | Returns NULL if SIG is not present in the table. */ | |
3161 | ||
3162 | static struct signatured_type * | |
3163 | lookup_signatured_type (struct objfile *objfile, ULONGEST sig) | |
3164 | { | |
3165 | struct signatured_type find_entry, *entry; | |
3166 | ||
3167 | if (dwarf2_per_objfile->signatured_types == NULL) | |
3168 | { | |
3169 | complaint (&symfile_complaints, | |
55f1336d | 3170 | _("missing `.debug_types' section for DW_FORM_ref_sig8 die")); |
348e048f DE |
3171 | return 0; |
3172 | } | |
3173 | ||
3174 | find_entry.signature = sig; | |
3175 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
3176 | return entry; | |
3177 | } | |
3178 | ||
d85a05f0 DJ |
3179 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
3180 | ||
3181 | static void | |
3182 | init_cu_die_reader (struct die_reader_specs *reader, | |
3183 | struct dwarf2_cu *cu) | |
3184 | { | |
3185 | reader->abfd = cu->objfile->obfd; | |
3186 | reader->cu = cu; | |
3187 | if (cu->per_cu->from_debug_types) | |
be391dca TT |
3188 | { |
3189 | gdb_assert (dwarf2_per_objfile->types.readin); | |
3190 | reader->buffer = dwarf2_per_objfile->types.buffer; | |
3191 | } | |
d85a05f0 | 3192 | else |
be391dca TT |
3193 | { |
3194 | gdb_assert (dwarf2_per_objfile->info.readin); | |
3195 | reader->buffer = dwarf2_per_objfile->info.buffer; | |
3196 | } | |
d85a05f0 DJ |
3197 | } |
3198 | ||
3199 | /* Find the base address of the compilation unit for range lists and | |
3200 | location lists. It will normally be specified by DW_AT_low_pc. | |
3201 | In DWARF-3 draft 4, the base address could be overridden by | |
3202 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
3203 | compilation units with discontinuous ranges. */ | |
3204 | ||
3205 | static void | |
3206 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
3207 | { | |
3208 | struct attribute *attr; | |
3209 | ||
3210 | cu->base_known = 0; | |
3211 | cu->base_address = 0; | |
3212 | ||
3213 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
3214 | if (attr) | |
3215 | { | |
3216 | cu->base_address = DW_ADDR (attr); | |
3217 | cu->base_known = 1; | |
3218 | } | |
3219 | else | |
3220 | { | |
3221 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3222 | if (attr) | |
3223 | { | |
3224 | cu->base_address = DW_ADDR (attr); | |
3225 | cu->base_known = 1; | |
3226 | } | |
3227 | } | |
3228 | } | |
3229 | ||
348e048f DE |
3230 | /* Subroutine of process_type_comp_unit and dwarf2_build_psymtabs_hard |
3231 | to combine the common parts. | |
93311388 | 3232 | Process a compilation unit for a psymtab. |
348e048f DE |
3233 | BUFFER is a pointer to the beginning of the dwarf section buffer, |
3234 | either .debug_info or debug_types. | |
93311388 DE |
3235 | INFO_PTR is a pointer to the start of the CU. |
3236 | Returns a pointer to the next CU. */ | |
aaa75496 | 3237 | |
93311388 DE |
3238 | static gdb_byte * |
3239 | process_psymtab_comp_unit (struct objfile *objfile, | |
3240 | struct dwarf2_per_cu_data *this_cu, | |
3241 | gdb_byte *buffer, gdb_byte *info_ptr, | |
3242 | unsigned int buffer_size) | |
c906108c | 3243 | { |
c906108c | 3244 | bfd *abfd = objfile->obfd; |
93311388 | 3245 | gdb_byte *beg_of_comp_unit = info_ptr; |
d85a05f0 | 3246 | struct die_info *comp_unit_die; |
c906108c | 3247 | struct partial_symtab *pst; |
5734ee8b | 3248 | CORE_ADDR baseaddr; |
93311388 DE |
3249 | struct cleanup *back_to_inner; |
3250 | struct dwarf2_cu cu; | |
d85a05f0 DJ |
3251 | int has_children, has_pc_info; |
3252 | struct attribute *attr; | |
d85a05f0 DJ |
3253 | CORE_ADDR best_lowpc = 0, best_highpc = 0; |
3254 | struct die_reader_specs reader_specs; | |
3e2a0cee | 3255 | const char *filename; |
c906108c | 3256 | |
9816fde3 | 3257 | init_one_comp_unit (&cu, objfile); |
93311388 | 3258 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); |
ae038cb0 | 3259 | |
93311388 DE |
3260 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, |
3261 | buffer, buffer_size, | |
3262 | abfd); | |
10b3939b | 3263 | |
93311388 DE |
3264 | /* Complete the cu_header. */ |
3265 | cu.header.offset = beg_of_comp_unit - buffer; | |
3266 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; | |
ff013f42 | 3267 | |
93311388 | 3268 | cu.list_in_scope = &file_symbols; |
af703f96 | 3269 | |
328c9494 DJ |
3270 | /* If this compilation unit was already read in, free the |
3271 | cached copy in order to read it in again. This is | |
3272 | necessary because we skipped some symbols when we first | |
3273 | read in the compilation unit (see load_partial_dies). | |
3274 | This problem could be avoided, but the benefit is | |
3275 | unclear. */ | |
3276 | if (this_cu->cu != NULL) | |
3277 | free_one_cached_comp_unit (this_cu->cu); | |
3278 | ||
3279 | /* Note that this is a pointer to our stack frame, being | |
3280 | added to a global data structure. It will be cleaned up | |
3281 | in free_stack_comp_unit when we finish with this | |
3282 | compilation unit. */ | |
3283 | this_cu->cu = &cu; | |
d85a05f0 DJ |
3284 | cu.per_cu = this_cu; |
3285 | ||
93311388 DE |
3286 | /* Read the abbrevs for this compilation unit into a table. */ |
3287 | dwarf2_read_abbrevs (abfd, &cu); | |
3288 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
af703f96 | 3289 | |
93311388 | 3290 | /* Read the compilation unit die. */ |
348e048f DE |
3291 | if (this_cu->from_debug_types) |
3292 | info_ptr += 8 /*signature*/ + cu.header.offset_size; | |
d85a05f0 DJ |
3293 | init_cu_die_reader (&reader_specs, &cu); |
3294 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
3295 | &has_children); | |
93311388 | 3296 | |
348e048f DE |
3297 | if (this_cu->from_debug_types) |
3298 | { | |
b3c8eb43 JK |
3299 | /* LENGTH has not been set yet for type units. */ |
3300 | gdb_assert (this_cu->offset == cu.header.offset); | |
348e048f DE |
3301 | this_cu->length = cu.header.length + cu.header.initial_length_size; |
3302 | } | |
d85a05f0 | 3303 | else if (comp_unit_die->tag == DW_TAG_partial_unit) |
c906108c | 3304 | { |
93311388 DE |
3305 | info_ptr = (beg_of_comp_unit + cu.header.length |
3306 | + cu.header.initial_length_size); | |
3307 | do_cleanups (back_to_inner); | |
3308 | return info_ptr; | |
3309 | } | |
72bf9492 | 3310 | |
9816fde3 | 3311 | prepare_one_comp_unit (&cu, comp_unit_die); |
c906108c | 3312 | |
93311388 | 3313 | /* Allocate a new partial symbol table structure. */ |
d85a05f0 | 3314 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, &cu); |
3e2a0cee TT |
3315 | if (attr == NULL || !DW_STRING (attr)) |
3316 | filename = ""; | |
3317 | else | |
3318 | filename = DW_STRING (attr); | |
93311388 | 3319 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
3e2a0cee | 3320 | filename, |
93311388 DE |
3321 | /* TEXTLOW and TEXTHIGH are set below. */ |
3322 | 0, | |
3323 | objfile->global_psymbols.next, | |
3324 | objfile->static_psymbols.next); | |
72bf9492 | 3325 | |
d85a05f0 DJ |
3326 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, &cu); |
3327 | if (attr != NULL) | |
3328 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 3329 | |
e38df1d0 | 3330 | pst->read_symtab_private = this_cu; |
72bf9492 | 3331 | |
93311388 | 3332 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 3333 | |
0963b4bd | 3334 | /* Store the function that reads in the rest of the symbol table. */ |
93311388 | 3335 | pst->read_symtab = dwarf2_psymtab_to_symtab; |
57349743 | 3336 | |
9291a0cd | 3337 | this_cu->v.psymtab = pst; |
c906108c | 3338 | |
d85a05f0 DJ |
3339 | dwarf2_find_base_address (comp_unit_die, &cu); |
3340 | ||
93311388 DE |
3341 | /* Possibly set the default values of LOWPC and HIGHPC from |
3342 | `DW_AT_ranges'. */ | |
d85a05f0 DJ |
3343 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
3344 | &best_highpc, &cu, pst); | |
3345 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
93311388 DE |
3346 | /* Store the contiguous range if it is not empty; it can be empty for |
3347 | CUs with no code. */ | |
3348 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
3349 | best_lowpc + baseaddr, |
3350 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
3351 | |
3352 | /* Check if comp unit has_children. | |
3353 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 3354 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 3355 | if (has_children) |
93311388 DE |
3356 | { |
3357 | struct partial_die_info *first_die; | |
3358 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 3359 | |
93311388 DE |
3360 | lowpc = ((CORE_ADDR) -1); |
3361 | highpc = ((CORE_ADDR) 0); | |
c906108c | 3362 | |
93311388 | 3363 | first_die = load_partial_dies (abfd, buffer, info_ptr, 1, &cu); |
c906108c | 3364 | |
93311388 | 3365 | scan_partial_symbols (first_die, &lowpc, &highpc, |
d85a05f0 | 3366 | ! has_pc_info, &cu); |
57c22c6c | 3367 | |
93311388 DE |
3368 | /* If we didn't find a lowpc, set it to highpc to avoid |
3369 | complaints from `maint check'. */ | |
3370 | if (lowpc == ((CORE_ADDR) -1)) | |
3371 | lowpc = highpc; | |
10b3939b | 3372 | |
93311388 DE |
3373 | /* If the compilation unit didn't have an explicit address range, |
3374 | then use the information extracted from its child dies. */ | |
d85a05f0 | 3375 | if (! has_pc_info) |
93311388 | 3376 | { |
d85a05f0 DJ |
3377 | best_lowpc = lowpc; |
3378 | best_highpc = highpc; | |
93311388 DE |
3379 | } |
3380 | } | |
d85a05f0 DJ |
3381 | pst->textlow = best_lowpc + baseaddr; |
3382 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 3383 | |
93311388 DE |
3384 | pst->n_global_syms = objfile->global_psymbols.next - |
3385 | (objfile->global_psymbols.list + pst->globals_offset); | |
3386 | pst->n_static_syms = objfile->static_psymbols.next - | |
3387 | (objfile->static_psymbols.list + pst->statics_offset); | |
3388 | sort_pst_symbols (pst); | |
c906108c | 3389 | |
93311388 DE |
3390 | info_ptr = (beg_of_comp_unit + cu.header.length |
3391 | + cu.header.initial_length_size); | |
ae038cb0 | 3392 | |
348e048f DE |
3393 | if (this_cu->from_debug_types) |
3394 | { | |
3395 | /* It's not clear we want to do anything with stmt lists here. | |
3396 | Waiting to see what gcc ultimately does. */ | |
3397 | } | |
d85a05f0 | 3398 | else |
93311388 DE |
3399 | { |
3400 | /* Get the list of files included in the current compilation unit, | |
3401 | and build a psymtab for each of them. */ | |
d85a05f0 | 3402 | dwarf2_build_include_psymtabs (&cu, comp_unit_die, pst); |
93311388 | 3403 | } |
ae038cb0 | 3404 | |
93311388 | 3405 | do_cleanups (back_to_inner); |
ae038cb0 | 3406 | |
93311388 DE |
3407 | return info_ptr; |
3408 | } | |
ff013f42 | 3409 | |
348e048f DE |
3410 | /* Traversal function for htab_traverse_noresize. |
3411 | Process one .debug_types comp-unit. */ | |
3412 | ||
3413 | static int | |
3414 | process_type_comp_unit (void **slot, void *info) | |
3415 | { | |
3416 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
3417 | struct objfile *objfile = (struct objfile *) info; | |
3418 | struct dwarf2_per_cu_data *this_cu; | |
3419 | ||
3420 | this_cu = &entry->per_cu; | |
348e048f | 3421 | |
be391dca | 3422 | gdb_assert (dwarf2_per_objfile->types.readin); |
348e048f DE |
3423 | process_psymtab_comp_unit (objfile, this_cu, |
3424 | dwarf2_per_objfile->types.buffer, | |
b3c8eb43 | 3425 | dwarf2_per_objfile->types.buffer + this_cu->offset, |
348e048f DE |
3426 | dwarf2_per_objfile->types.size); |
3427 | ||
3428 | return 1; | |
3429 | } | |
3430 | ||
3431 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
3432 | Build partial symbol tables for the .debug_types comp-units. */ | |
3433 | ||
3434 | static void | |
3435 | build_type_psymtabs (struct objfile *objfile) | |
3436 | { | |
3437 | if (! create_debug_types_hash_table (objfile)) | |
3438 | return; | |
3439 | ||
3440 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
3441 | process_type_comp_unit, objfile); | |
3442 | } | |
3443 | ||
60606b2c TT |
3444 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
3445 | ||
3446 | static void | |
3447 | psymtabs_addrmap_cleanup (void *o) | |
3448 | { | |
3449 | struct objfile *objfile = o; | |
ec61707d | 3450 | |
60606b2c TT |
3451 | objfile->psymtabs_addrmap = NULL; |
3452 | } | |
3453 | ||
93311388 DE |
3454 | /* Build the partial symbol table by doing a quick pass through the |
3455 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 3456 | |
93311388 | 3457 | static void |
c67a9c90 | 3458 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 3459 | { |
93311388 | 3460 | gdb_byte *info_ptr; |
60606b2c TT |
3461 | struct cleanup *back_to, *addrmap_cleanup; |
3462 | struct obstack temp_obstack; | |
93311388 | 3463 | |
98bfdba5 PA |
3464 | dwarf2_per_objfile->reading_partial_symbols = 1; |
3465 | ||
be391dca | 3466 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
93311388 | 3467 | info_ptr = dwarf2_per_objfile->info.buffer; |
91c24f0a | 3468 | |
93311388 DE |
3469 | /* Any cached compilation units will be linked by the per-objfile |
3470 | read_in_chain. Make sure to free them when we're done. */ | |
3471 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 3472 | |
348e048f DE |
3473 | build_type_psymtabs (objfile); |
3474 | ||
93311388 | 3475 | create_all_comp_units (objfile); |
c906108c | 3476 | |
60606b2c TT |
3477 | /* Create a temporary address map on a temporary obstack. We later |
3478 | copy this to the final obstack. */ | |
3479 | obstack_init (&temp_obstack); | |
3480 | make_cleanup_obstack_free (&temp_obstack); | |
3481 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
3482 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 3483 | |
93311388 DE |
3484 | /* Since the objects we're extracting from .debug_info vary in |
3485 | length, only the individual functions to extract them (like | |
3486 | read_comp_unit_head and load_partial_die) can really know whether | |
3487 | the buffer is large enough to hold another complete object. | |
c906108c | 3488 | |
93311388 DE |
3489 | At the moment, they don't actually check that. If .debug_info |
3490 | holds just one extra byte after the last compilation unit's dies, | |
3491 | then read_comp_unit_head will happily read off the end of the | |
3492 | buffer. read_partial_die is similarly casual. Those functions | |
3493 | should be fixed. | |
c906108c | 3494 | |
93311388 DE |
3495 | For this loop condition, simply checking whether there's any data |
3496 | left at all should be sufficient. */ | |
c906108c | 3497 | |
93311388 DE |
3498 | while (info_ptr < (dwarf2_per_objfile->info.buffer |
3499 | + dwarf2_per_objfile->info.size)) | |
3500 | { | |
3501 | struct dwarf2_per_cu_data *this_cu; | |
dd373385 | 3502 | |
3e43a32a MS |
3503 | this_cu = dwarf2_find_comp_unit (info_ptr |
3504 | - dwarf2_per_objfile->info.buffer, | |
93311388 | 3505 | objfile); |
aaa75496 | 3506 | |
93311388 DE |
3507 | info_ptr = process_psymtab_comp_unit (objfile, this_cu, |
3508 | dwarf2_per_objfile->info.buffer, | |
3509 | info_ptr, | |
3510 | dwarf2_per_objfile->info.size); | |
c906108c | 3511 | } |
ff013f42 JK |
3512 | |
3513 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, | |
3514 | &objfile->objfile_obstack); | |
60606b2c | 3515 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 3516 | |
ae038cb0 DJ |
3517 | do_cleanups (back_to); |
3518 | } | |
3519 | ||
93311388 | 3520 | /* Load the partial DIEs for a secondary CU into memory. */ |
ae038cb0 DJ |
3521 | |
3522 | static void | |
93311388 DE |
3523 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu, |
3524 | struct objfile *objfile) | |
ae038cb0 DJ |
3525 | { |
3526 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 3527 | gdb_byte *info_ptr, *beg_of_comp_unit; |
d85a05f0 | 3528 | struct die_info *comp_unit_die; |
ae038cb0 | 3529 | struct dwarf2_cu *cu; |
1d9ec526 | 3530 | struct cleanup *free_abbrevs_cleanup, *free_cu_cleanup = NULL; |
d85a05f0 DJ |
3531 | int has_children; |
3532 | struct die_reader_specs reader_specs; | |
98bfdba5 | 3533 | int read_cu = 0; |
ae038cb0 | 3534 | |
348e048f DE |
3535 | gdb_assert (! this_cu->from_debug_types); |
3536 | ||
be391dca | 3537 | gdb_assert (dwarf2_per_objfile->info.readin); |
dce234bc | 3538 | info_ptr = dwarf2_per_objfile->info.buffer + this_cu->offset; |
ae038cb0 DJ |
3539 | beg_of_comp_unit = info_ptr; |
3540 | ||
98bfdba5 PA |
3541 | if (this_cu->cu == NULL) |
3542 | { | |
9816fde3 JK |
3543 | cu = xmalloc (sizeof (*cu)); |
3544 | init_one_comp_unit (cu, objfile); | |
ae038cb0 | 3545 | |
98bfdba5 | 3546 | read_cu = 1; |
ae038cb0 | 3547 | |
98bfdba5 PA |
3548 | /* If an error occurs while loading, release our storage. */ |
3549 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
328c9494 | 3550 | |
98bfdba5 PA |
3551 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, |
3552 | dwarf2_per_objfile->info.buffer, | |
3553 | dwarf2_per_objfile->info.size, | |
3554 | abfd); | |
ae038cb0 | 3555 | |
98bfdba5 PA |
3556 | /* Complete the cu_header. */ |
3557 | cu->header.offset = this_cu->offset; | |
3558 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; | |
3559 | ||
3560 | /* Link this compilation unit into the compilation unit tree. */ | |
3561 | this_cu->cu = cu; | |
3562 | cu->per_cu = this_cu; | |
98bfdba5 PA |
3563 | |
3564 | /* Link this CU into read_in_chain. */ | |
3565 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
3566 | dwarf2_per_objfile->read_in_chain = this_cu; | |
3567 | } | |
3568 | else | |
3569 | { | |
3570 | cu = this_cu->cu; | |
3571 | info_ptr += cu->header.first_die_offset; | |
3572 | } | |
ae038cb0 DJ |
3573 | |
3574 | /* Read the abbrevs for this compilation unit into a table. */ | |
98bfdba5 | 3575 | gdb_assert (cu->dwarf2_abbrevs == NULL); |
ae038cb0 | 3576 | dwarf2_read_abbrevs (abfd, cu); |
98bfdba5 | 3577 | free_abbrevs_cleanup = make_cleanup (dwarf2_free_abbrev_table, cu); |
ae038cb0 DJ |
3578 | |
3579 | /* Read the compilation unit die. */ | |
d85a05f0 DJ |
3580 | init_cu_die_reader (&reader_specs, cu); |
3581 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
3582 | &has_children); | |
ae038cb0 | 3583 | |
9816fde3 | 3584 | prepare_one_comp_unit (cu, comp_unit_die); |
ae038cb0 | 3585 | |
ae038cb0 DJ |
3586 | /* Check if comp unit has_children. |
3587 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 3588 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 3589 | if (has_children) |
93311388 | 3590 | load_partial_dies (abfd, dwarf2_per_objfile->info.buffer, info_ptr, 0, cu); |
ae038cb0 | 3591 | |
98bfdba5 PA |
3592 | do_cleanups (free_abbrevs_cleanup); |
3593 | ||
3594 | if (read_cu) | |
3595 | { | |
3596 | /* We've successfully allocated this compilation unit. Let our | |
3597 | caller clean it up when finished with it. */ | |
3598 | discard_cleanups (free_cu_cleanup); | |
3599 | } | |
ae038cb0 DJ |
3600 | } |
3601 | ||
3602 | /* Create a list of all compilation units in OBJFILE. We do this only | |
3603 | if an inter-comp-unit reference is found; presumably if there is one, | |
3604 | there will be many, and one will occur early in the .debug_info section. | |
3605 | So there's no point in building this list incrementally. */ | |
3606 | ||
3607 | static void | |
3608 | create_all_comp_units (struct objfile *objfile) | |
3609 | { | |
3610 | int n_allocated; | |
3611 | int n_comp_units; | |
3612 | struct dwarf2_per_cu_data **all_comp_units; | |
be391dca TT |
3613 | gdb_byte *info_ptr; |
3614 | ||
3615 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
3616 | info_ptr = dwarf2_per_objfile->info.buffer; | |
ae038cb0 DJ |
3617 | |
3618 | n_comp_units = 0; | |
3619 | n_allocated = 10; | |
3620 | all_comp_units = xmalloc (n_allocated | |
3621 | * sizeof (struct dwarf2_per_cu_data *)); | |
6e70227d | 3622 | |
3e43a32a MS |
3623 | while (info_ptr < dwarf2_per_objfile->info.buffer |
3624 | + dwarf2_per_objfile->info.size) | |
ae038cb0 | 3625 | { |
c764a876 | 3626 | unsigned int length, initial_length_size; |
ae038cb0 | 3627 | struct dwarf2_per_cu_data *this_cu; |
c764a876 | 3628 | unsigned int offset; |
ae038cb0 | 3629 | |
dce234bc | 3630 | offset = info_ptr - dwarf2_per_objfile->info.buffer; |
ae038cb0 DJ |
3631 | |
3632 | /* Read just enough information to find out where the next | |
3633 | compilation unit is. */ | |
c764a876 DE |
3634 | length = read_initial_length (objfile->obfd, info_ptr, |
3635 | &initial_length_size); | |
ae038cb0 DJ |
3636 | |
3637 | /* Save the compilation unit for later lookup. */ | |
3638 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
3639 | sizeof (struct dwarf2_per_cu_data)); | |
3640 | memset (this_cu, 0, sizeof (*this_cu)); | |
3641 | this_cu->offset = offset; | |
c764a876 | 3642 | this_cu->length = length + initial_length_size; |
9291a0cd | 3643 | this_cu->objfile = objfile; |
ae038cb0 DJ |
3644 | |
3645 | if (n_comp_units == n_allocated) | |
3646 | { | |
3647 | n_allocated *= 2; | |
3648 | all_comp_units = xrealloc (all_comp_units, | |
3649 | n_allocated | |
3650 | * sizeof (struct dwarf2_per_cu_data *)); | |
3651 | } | |
3652 | all_comp_units[n_comp_units++] = this_cu; | |
3653 | ||
3654 | info_ptr = info_ptr + this_cu->length; | |
3655 | } | |
3656 | ||
3657 | dwarf2_per_objfile->all_comp_units | |
3658 | = obstack_alloc (&objfile->objfile_obstack, | |
3659 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
3660 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
3661 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
3662 | xfree (all_comp_units); | |
3663 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
3664 | } |
3665 | ||
5734ee8b DJ |
3666 | /* Process all loaded DIEs for compilation unit CU, starting at |
3667 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
3668 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
3669 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
3670 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
3671 | and record the covered ranges in the addrmap. */ | |
c906108c | 3672 | |
72bf9492 DJ |
3673 | static void |
3674 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 3675 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 3676 | { |
72bf9492 | 3677 | struct partial_die_info *pdi; |
c906108c | 3678 | |
91c24f0a DC |
3679 | /* Now, march along the PDI's, descending into ones which have |
3680 | interesting children but skipping the children of the other ones, | |
3681 | until we reach the end of the compilation unit. */ | |
c906108c | 3682 | |
72bf9492 | 3683 | pdi = first_die; |
91c24f0a | 3684 | |
72bf9492 DJ |
3685 | while (pdi != NULL) |
3686 | { | |
3687 | fixup_partial_die (pdi, cu); | |
c906108c | 3688 | |
f55ee35c | 3689 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
3690 | children, so we need to look at them. Ditto for anonymous |
3691 | enums. */ | |
933c6fe4 | 3692 | |
72bf9492 | 3693 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
f55ee35c | 3694 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type) |
c906108c | 3695 | { |
72bf9492 | 3696 | switch (pdi->tag) |
c906108c SS |
3697 | { |
3698 | case DW_TAG_subprogram: | |
5734ee8b | 3699 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 3700 | break; |
72929c62 | 3701 | case DW_TAG_constant: |
c906108c SS |
3702 | case DW_TAG_variable: |
3703 | case DW_TAG_typedef: | |
91c24f0a | 3704 | case DW_TAG_union_type: |
72bf9492 | 3705 | if (!pdi->is_declaration) |
63d06c5c | 3706 | { |
72bf9492 | 3707 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
3708 | } |
3709 | break; | |
c906108c | 3710 | case DW_TAG_class_type: |
680b30c7 | 3711 | case DW_TAG_interface_type: |
c906108c | 3712 | case DW_TAG_structure_type: |
72bf9492 | 3713 | if (!pdi->is_declaration) |
c906108c | 3714 | { |
72bf9492 | 3715 | add_partial_symbol (pdi, cu); |
c906108c SS |
3716 | } |
3717 | break; | |
91c24f0a | 3718 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
3719 | if (!pdi->is_declaration) |
3720 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
3721 | break; |
3722 | case DW_TAG_base_type: | |
a02abb62 | 3723 | case DW_TAG_subrange_type: |
c906108c | 3724 | /* File scope base type definitions are added to the partial |
c5aa993b | 3725 | symbol table. */ |
72bf9492 | 3726 | add_partial_symbol (pdi, cu); |
c906108c | 3727 | break; |
d9fa45fe | 3728 | case DW_TAG_namespace: |
5734ee8b | 3729 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 3730 | break; |
5d7cb8df JK |
3731 | case DW_TAG_module: |
3732 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
3733 | break; | |
c906108c SS |
3734 | default: |
3735 | break; | |
3736 | } | |
3737 | } | |
3738 | ||
72bf9492 DJ |
3739 | /* If the die has a sibling, skip to the sibling. */ |
3740 | ||
3741 | pdi = pdi->die_sibling; | |
3742 | } | |
3743 | } | |
3744 | ||
3745 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 3746 | |
72bf9492 | 3747 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
3748 | name is concatenated with "::" and the partial DIE's name. For |
3749 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
3750 | Enumerators are an exception; they use the scope of their parent |
3751 | enumeration type, i.e. the name of the enumeration type is not | |
3752 | prepended to the enumerator. | |
91c24f0a | 3753 | |
72bf9492 DJ |
3754 | There are two complexities. One is DW_AT_specification; in this |
3755 | case "parent" means the parent of the target of the specification, | |
3756 | instead of the direct parent of the DIE. The other is compilers | |
3757 | which do not emit DW_TAG_namespace; in this case we try to guess | |
3758 | the fully qualified name of structure types from their members' | |
3759 | linkage names. This must be done using the DIE's children rather | |
3760 | than the children of any DW_AT_specification target. We only need | |
3761 | to do this for structures at the top level, i.e. if the target of | |
3762 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
3763 | have a parent. */ | |
3764 | ||
3765 | /* Compute the scope prefix associated with PDI's parent, in | |
3766 | compilation unit CU. The result will be allocated on CU's | |
3767 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
3768 | field. NULL is returned if no prefix is necessary. */ | |
3769 | static char * | |
3770 | partial_die_parent_scope (struct partial_die_info *pdi, | |
3771 | struct dwarf2_cu *cu) | |
3772 | { | |
3773 | char *grandparent_scope; | |
3774 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 3775 | |
72bf9492 DJ |
3776 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
3777 | then this means the parent of the specification DIE. */ | |
3778 | ||
3779 | real_pdi = pdi; | |
72bf9492 | 3780 | while (real_pdi->has_specification) |
10b3939b | 3781 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
3782 | |
3783 | parent = real_pdi->die_parent; | |
3784 | if (parent == NULL) | |
3785 | return NULL; | |
3786 | ||
3787 | if (parent->scope_set) | |
3788 | return parent->scope; | |
3789 | ||
3790 | fixup_partial_die (parent, cu); | |
3791 | ||
10b3939b | 3792 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 3793 | |
acebe513 UW |
3794 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
3795 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
3796 | Work around this problem here. */ | |
3797 | if (cu->language == language_cplus | |
6e70227d | 3798 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
3799 | && strcmp (parent->name, "::") == 0 |
3800 | && grandparent_scope == NULL) | |
3801 | { | |
3802 | parent->scope = NULL; | |
3803 | parent->scope_set = 1; | |
3804 | return NULL; | |
3805 | } | |
3806 | ||
72bf9492 | 3807 | if (parent->tag == DW_TAG_namespace |
f55ee35c | 3808 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
3809 | || parent->tag == DW_TAG_structure_type |
3810 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 3811 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
3812 | || parent->tag == DW_TAG_union_type |
3813 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
3814 | { |
3815 | if (grandparent_scope == NULL) | |
3816 | parent->scope = parent->name; | |
3817 | else | |
3e43a32a MS |
3818 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
3819 | grandparent_scope, | |
f55ee35c | 3820 | parent->name, 0, cu); |
72bf9492 | 3821 | } |
ceeb3d5a | 3822 | else if (parent->tag == DW_TAG_enumerator) |
72bf9492 DJ |
3823 | /* Enumerators should not get the name of the enumeration as a prefix. */ |
3824 | parent->scope = grandparent_scope; | |
3825 | else | |
3826 | { | |
3827 | /* FIXME drow/2004-04-01: What should we be doing with | |
3828 | function-local names? For partial symbols, we should probably be | |
3829 | ignoring them. */ | |
3830 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3831 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
3832 | parent->tag, pdi->offset); |
3833 | parent->scope = grandparent_scope; | |
c906108c SS |
3834 | } |
3835 | ||
72bf9492 DJ |
3836 | parent->scope_set = 1; |
3837 | return parent->scope; | |
3838 | } | |
3839 | ||
3840 | /* Return the fully scoped name associated with PDI, from compilation unit | |
3841 | CU. The result will be allocated with malloc. */ | |
3842 | static char * | |
3843 | partial_die_full_name (struct partial_die_info *pdi, | |
3844 | struct dwarf2_cu *cu) | |
3845 | { | |
3846 | char *parent_scope; | |
3847 | ||
98bfdba5 PA |
3848 | /* If this is a template instantiation, we can not work out the |
3849 | template arguments from partial DIEs. So, unfortunately, we have | |
3850 | to go through the full DIEs. At least any work we do building | |
3851 | types here will be reused if full symbols are loaded later. */ | |
3852 | if (pdi->has_template_arguments) | |
3853 | { | |
3854 | fixup_partial_die (pdi, cu); | |
3855 | ||
3856 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
3857 | { | |
3858 | struct die_info *die; | |
3859 | struct attribute attr; | |
3860 | struct dwarf2_cu *ref_cu = cu; | |
3861 | ||
3862 | attr.name = 0; | |
3863 | attr.form = DW_FORM_ref_addr; | |
3864 | attr.u.addr = pdi->offset; | |
3865 | die = follow_die_ref (NULL, &attr, &ref_cu); | |
3866 | ||
3867 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
3868 | } | |
3869 | } | |
3870 | ||
72bf9492 DJ |
3871 | parent_scope = partial_die_parent_scope (pdi, cu); |
3872 | if (parent_scope == NULL) | |
3873 | return NULL; | |
3874 | else | |
f55ee35c | 3875 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
3876 | } |
3877 | ||
3878 | static void | |
72bf9492 | 3879 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 3880 | { |
e7c27a73 | 3881 | struct objfile *objfile = cu->objfile; |
c906108c | 3882 | CORE_ADDR addr = 0; |
decbce07 | 3883 | char *actual_name = NULL; |
5c4e30ca | 3884 | const struct partial_symbol *psym = NULL; |
e142c38c | 3885 | CORE_ADDR baseaddr; |
72bf9492 | 3886 | int built_actual_name = 0; |
e142c38c DJ |
3887 | |
3888 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 3889 | |
94af9270 KS |
3890 | actual_name = partial_die_full_name (pdi, cu); |
3891 | if (actual_name) | |
3892 | built_actual_name = 1; | |
63d06c5c | 3893 | |
72bf9492 DJ |
3894 | if (actual_name == NULL) |
3895 | actual_name = pdi->name; | |
3896 | ||
c906108c SS |
3897 | switch (pdi->tag) |
3898 | { | |
3899 | case DW_TAG_subprogram: | |
2cfa0c8d | 3900 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 3901 | { |
2cfa0c8d JB |
3902 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
3903 | of the global scope. But in Ada, we want to be able to access | |
3904 | nested procedures globally. So all Ada subprograms are stored | |
3905 | in the global scope. */ | |
f47fb265 | 3906 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 3907 | mst_text, objfile); */ |
f47fb265 MS |
3908 | add_psymbol_to_list (actual_name, strlen (actual_name), |
3909 | built_actual_name, | |
3910 | VAR_DOMAIN, LOC_BLOCK, | |
3911 | &objfile->global_psymbols, | |
3912 | 0, pdi->lowpc + baseaddr, | |
3913 | cu->language, objfile); | |
c906108c SS |
3914 | } |
3915 | else | |
3916 | { | |
f47fb265 | 3917 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 3918 | mst_file_text, objfile); */ |
f47fb265 MS |
3919 | add_psymbol_to_list (actual_name, strlen (actual_name), |
3920 | built_actual_name, | |
3921 | VAR_DOMAIN, LOC_BLOCK, | |
3922 | &objfile->static_psymbols, | |
3923 | 0, pdi->lowpc + baseaddr, | |
3924 | cu->language, objfile); | |
c906108c SS |
3925 | } |
3926 | break; | |
72929c62 JB |
3927 | case DW_TAG_constant: |
3928 | { | |
3929 | struct psymbol_allocation_list *list; | |
3930 | ||
3931 | if (pdi->is_external) | |
3932 | list = &objfile->global_psymbols; | |
3933 | else | |
3934 | list = &objfile->static_psymbols; | |
f47fb265 MS |
3935 | add_psymbol_to_list (actual_name, strlen (actual_name), |
3936 | built_actual_name, VAR_DOMAIN, LOC_STATIC, | |
3937 | list, 0, 0, cu->language, objfile); | |
72929c62 JB |
3938 | } |
3939 | break; | |
c906108c | 3940 | case DW_TAG_variable: |
caac4577 JG |
3941 | if (pdi->locdesc) |
3942 | addr = decode_locdesc (pdi->locdesc, cu); | |
3943 | ||
3944 | if (pdi->locdesc | |
3945 | && addr == 0 | |
3946 | && !dwarf2_per_objfile->has_section_at_zero) | |
3947 | { | |
3948 | /* A global or static variable may also have been stripped | |
3949 | out by the linker if unused, in which case its address | |
3950 | will be nullified; do not add such variables into partial | |
3951 | symbol table then. */ | |
3952 | } | |
3953 | else if (pdi->is_external) | |
c906108c SS |
3954 | { |
3955 | /* Global Variable. | |
3956 | Don't enter into the minimal symbol tables as there is | |
3957 | a minimal symbol table entry from the ELF symbols already. | |
3958 | Enter into partial symbol table if it has a location | |
3959 | descriptor or a type. | |
3960 | If the location descriptor is missing, new_symbol will create | |
3961 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
3962 | be determined from the minimal symbol table whenever the variable | |
3963 | is referenced. | |
3964 | The address for the partial symbol table entry is not | |
3965 | used by GDB, but it comes in handy for debugging partial symbol | |
3966 | table building. */ | |
3967 | ||
c906108c | 3968 | if (pdi->locdesc || pdi->has_type) |
f47fb265 MS |
3969 | add_psymbol_to_list (actual_name, strlen (actual_name), |
3970 | built_actual_name, | |
3971 | VAR_DOMAIN, LOC_STATIC, | |
3972 | &objfile->global_psymbols, | |
3973 | 0, addr + baseaddr, | |
3974 | cu->language, objfile); | |
c906108c SS |
3975 | } |
3976 | else | |
3977 | { | |
0963b4bd | 3978 | /* Static Variable. Skip symbols without location descriptors. */ |
c906108c | 3979 | if (pdi->locdesc == NULL) |
decbce07 MS |
3980 | { |
3981 | if (built_actual_name) | |
3982 | xfree (actual_name); | |
3983 | return; | |
3984 | } | |
f47fb265 | 3985 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 3986 | mst_file_data, objfile); */ |
f47fb265 MS |
3987 | add_psymbol_to_list (actual_name, strlen (actual_name), |
3988 | built_actual_name, | |
3989 | VAR_DOMAIN, LOC_STATIC, | |
3990 | &objfile->static_psymbols, | |
3991 | 0, addr + baseaddr, | |
3992 | cu->language, objfile); | |
c906108c SS |
3993 | } |
3994 | break; | |
3995 | case DW_TAG_typedef: | |
3996 | case DW_TAG_base_type: | |
a02abb62 | 3997 | case DW_TAG_subrange_type: |
38d518c9 | 3998 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3999 | built_actual_name, |
176620f1 | 4000 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 4001 | &objfile->static_psymbols, |
e142c38c | 4002 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 4003 | break; |
72bf9492 DJ |
4004 | case DW_TAG_namespace: |
4005 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
04a679b8 | 4006 | built_actual_name, |
72bf9492 DJ |
4007 | VAR_DOMAIN, LOC_TYPEDEF, |
4008 | &objfile->global_psymbols, | |
4009 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
4010 | break; | |
c906108c | 4011 | case DW_TAG_class_type: |
680b30c7 | 4012 | case DW_TAG_interface_type: |
c906108c SS |
4013 | case DW_TAG_structure_type: |
4014 | case DW_TAG_union_type: | |
4015 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
4016 | /* Skip external references. The DWARF standard says in the section |
4017 | about "Structure, Union, and Class Type Entries": "An incomplete | |
4018 | structure, union or class type is represented by a structure, | |
4019 | union or class entry that does not have a byte size attribute | |
4020 | and that has a DW_AT_declaration attribute." */ | |
4021 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
4022 | { |
4023 | if (built_actual_name) | |
4024 | xfree (actual_name); | |
4025 | return; | |
4026 | } | |
fa4028e9 | 4027 | |
63d06c5c DC |
4028 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
4029 | static vs. global. */ | |
38d518c9 | 4030 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 4031 | built_actual_name, |
176620f1 | 4032 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
4033 | (cu->language == language_cplus |
4034 | || cu->language == language_java) | |
63d06c5c DC |
4035 | ? &objfile->global_psymbols |
4036 | : &objfile->static_psymbols, | |
e142c38c | 4037 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 4038 | |
c906108c SS |
4039 | break; |
4040 | case DW_TAG_enumerator: | |
38d518c9 | 4041 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 4042 | built_actual_name, |
176620f1 | 4043 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
4044 | (cu->language == language_cplus |
4045 | || cu->language == language_java) | |
f6fe98ef DJ |
4046 | ? &objfile->global_psymbols |
4047 | : &objfile->static_psymbols, | |
e142c38c | 4048 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
4049 | break; |
4050 | default: | |
4051 | break; | |
4052 | } | |
5c4e30ca | 4053 | |
72bf9492 DJ |
4054 | if (built_actual_name) |
4055 | xfree (actual_name); | |
c906108c SS |
4056 | } |
4057 | ||
5c4e30ca DC |
4058 | /* Read a partial die corresponding to a namespace; also, add a symbol |
4059 | corresponding to that namespace to the symbol table. NAMESPACE is | |
4060 | the name of the enclosing namespace. */ | |
91c24f0a | 4061 | |
72bf9492 DJ |
4062 | static void |
4063 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 4064 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 4065 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 4066 | { |
72bf9492 | 4067 | /* Add a symbol for the namespace. */ |
e7c27a73 | 4068 | |
72bf9492 | 4069 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
4070 | |
4071 | /* Now scan partial symbols in that namespace. */ | |
4072 | ||
91c24f0a | 4073 | if (pdi->has_children) |
5734ee8b | 4074 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
4075 | } |
4076 | ||
5d7cb8df JK |
4077 | /* Read a partial die corresponding to a Fortran module. */ |
4078 | ||
4079 | static void | |
4080 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
4081 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
4082 | { | |
f55ee35c | 4083 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
4084 | |
4085 | if (pdi->has_children) | |
4086 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
4087 | } | |
4088 | ||
bc30ff58 JB |
4089 | /* Read a partial die corresponding to a subprogram and create a partial |
4090 | symbol for that subprogram. When the CU language allows it, this | |
4091 | routine also defines a partial symbol for each nested subprogram | |
4092 | that this subprogram contains. | |
6e70227d | 4093 | |
bc30ff58 JB |
4094 | DIE my also be a lexical block, in which case we simply search |
4095 | recursively for suprograms defined inside that lexical block. | |
4096 | Again, this is only performed when the CU language allows this | |
4097 | type of definitions. */ | |
4098 | ||
4099 | static void | |
4100 | add_partial_subprogram (struct partial_die_info *pdi, | |
4101 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 4102 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
4103 | { |
4104 | if (pdi->tag == DW_TAG_subprogram) | |
4105 | { | |
4106 | if (pdi->has_pc_info) | |
4107 | { | |
4108 | if (pdi->lowpc < *lowpc) | |
4109 | *lowpc = pdi->lowpc; | |
4110 | if (pdi->highpc > *highpc) | |
4111 | *highpc = pdi->highpc; | |
5734ee8b DJ |
4112 | if (need_pc) |
4113 | { | |
4114 | CORE_ADDR baseaddr; | |
4115 | struct objfile *objfile = cu->objfile; | |
4116 | ||
4117 | baseaddr = ANOFFSET (objfile->section_offsets, | |
4118 | SECT_OFF_TEXT (objfile)); | |
4119 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
4120 | pdi->lowpc + baseaddr, |
4121 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 4122 | cu->per_cu->v.psymtab); |
5734ee8b | 4123 | } |
bc30ff58 | 4124 | if (!pdi->is_declaration) |
e8d05480 JB |
4125 | /* Ignore subprogram DIEs that do not have a name, they are |
4126 | illegal. Do not emit a complaint at this point, we will | |
4127 | do so when we convert this psymtab into a symtab. */ | |
4128 | if (pdi->name) | |
4129 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
4130 | } |
4131 | } | |
6e70227d | 4132 | |
bc30ff58 JB |
4133 | if (! pdi->has_children) |
4134 | return; | |
4135 | ||
4136 | if (cu->language == language_ada) | |
4137 | { | |
4138 | pdi = pdi->die_child; | |
4139 | while (pdi != NULL) | |
4140 | { | |
4141 | fixup_partial_die (pdi, cu); | |
4142 | if (pdi->tag == DW_TAG_subprogram | |
4143 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 4144 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
4145 | pdi = pdi->die_sibling; |
4146 | } | |
4147 | } | |
4148 | } | |
4149 | ||
91c24f0a DC |
4150 | /* Read a partial die corresponding to an enumeration type. */ |
4151 | ||
72bf9492 DJ |
4152 | static void |
4153 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
4154 | struct dwarf2_cu *cu) | |
91c24f0a | 4155 | { |
72bf9492 | 4156 | struct partial_die_info *pdi; |
91c24f0a DC |
4157 | |
4158 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
4159 | add_partial_symbol (enum_pdi, cu); |
4160 | ||
4161 | pdi = enum_pdi->die_child; | |
4162 | while (pdi) | |
91c24f0a | 4163 | { |
72bf9492 | 4164 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 4165 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 4166 | else |
72bf9492 DJ |
4167 | add_partial_symbol (pdi, cu); |
4168 | pdi = pdi->die_sibling; | |
91c24f0a | 4169 | } |
91c24f0a DC |
4170 | } |
4171 | ||
4bb7a0a7 DJ |
4172 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
4173 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
4174 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
4175 | the initial number. */ | |
4176 | ||
4177 | static struct abbrev_info * | |
fe1b8b76 | 4178 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 4179 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
4180 | { |
4181 | bfd *abfd = cu->objfile->obfd; | |
4182 | unsigned int abbrev_number; | |
4183 | struct abbrev_info *abbrev; | |
4184 | ||
4185 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4186 | ||
4187 | if (abbrev_number == 0) | |
4188 | return NULL; | |
4189 | ||
4190 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
4191 | if (!abbrev) | |
4192 | { | |
3e43a32a MS |
4193 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
4194 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
4195 | } |
4196 | ||
4197 | return abbrev; | |
4198 | } | |
4199 | ||
93311388 DE |
4200 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
4201 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
4202 | DIE. Any children of the skipped DIEs will also be skipped. */ |
4203 | ||
fe1b8b76 | 4204 | static gdb_byte * |
93311388 | 4205 | skip_children (gdb_byte *buffer, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
4206 | { |
4207 | struct abbrev_info *abbrev; | |
4208 | unsigned int bytes_read; | |
4209 | ||
4210 | while (1) | |
4211 | { | |
4212 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
4213 | if (abbrev == NULL) | |
4214 | return info_ptr + bytes_read; | |
4215 | else | |
93311388 | 4216 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
4bb7a0a7 DJ |
4217 | } |
4218 | } | |
4219 | ||
93311388 DE |
4220 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
4221 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
4222 | abbrev corresponding to that skipped uleb128 should be passed in |
4223 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
4224 | children. */ | |
4225 | ||
fe1b8b76 | 4226 | static gdb_byte * |
93311388 DE |
4227 | skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
4228 | struct abbrev_info *abbrev, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
4229 | { |
4230 | unsigned int bytes_read; | |
4231 | struct attribute attr; | |
4232 | bfd *abfd = cu->objfile->obfd; | |
4233 | unsigned int form, i; | |
4234 | ||
4235 | for (i = 0; i < abbrev->num_attrs; i++) | |
4236 | { | |
4237 | /* The only abbrev we care about is DW_AT_sibling. */ | |
4238 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
4239 | { | |
4240 | read_attribute (&attr, &abbrev->attrs[i], | |
4241 | abfd, info_ptr, cu); | |
4242 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
4243 | complaint (&symfile_complaints, |
4244 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 4245 | else |
93311388 | 4246 | return buffer + dwarf2_get_ref_die_offset (&attr); |
4bb7a0a7 DJ |
4247 | } |
4248 | ||
4249 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
4250 | form = abbrev->attrs[i].form; | |
4251 | skip_attribute: | |
4252 | switch (form) | |
4253 | { | |
4bb7a0a7 | 4254 | case DW_FORM_ref_addr: |
ae411497 TT |
4255 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
4256 | and later it is offset sized. */ | |
4257 | if (cu->header.version == 2) | |
4258 | info_ptr += cu->header.addr_size; | |
4259 | else | |
4260 | info_ptr += cu->header.offset_size; | |
4261 | break; | |
4262 | case DW_FORM_addr: | |
4bb7a0a7 DJ |
4263 | info_ptr += cu->header.addr_size; |
4264 | break; | |
4265 | case DW_FORM_data1: | |
4266 | case DW_FORM_ref1: | |
4267 | case DW_FORM_flag: | |
4268 | info_ptr += 1; | |
4269 | break; | |
2dc7f7b3 TT |
4270 | case DW_FORM_flag_present: |
4271 | break; | |
4bb7a0a7 DJ |
4272 | case DW_FORM_data2: |
4273 | case DW_FORM_ref2: | |
4274 | info_ptr += 2; | |
4275 | break; | |
4276 | case DW_FORM_data4: | |
4277 | case DW_FORM_ref4: | |
4278 | info_ptr += 4; | |
4279 | break; | |
4280 | case DW_FORM_data8: | |
4281 | case DW_FORM_ref8: | |
55f1336d | 4282 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
4283 | info_ptr += 8; |
4284 | break; | |
4285 | case DW_FORM_string: | |
9b1c24c8 | 4286 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
4287 | info_ptr += bytes_read; |
4288 | break; | |
2dc7f7b3 | 4289 | case DW_FORM_sec_offset: |
4bb7a0a7 DJ |
4290 | case DW_FORM_strp: |
4291 | info_ptr += cu->header.offset_size; | |
4292 | break; | |
2dc7f7b3 | 4293 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
4294 | case DW_FORM_block: |
4295 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4296 | info_ptr += bytes_read; | |
4297 | break; | |
4298 | case DW_FORM_block1: | |
4299 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
4300 | break; | |
4301 | case DW_FORM_block2: | |
4302 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
4303 | break; | |
4304 | case DW_FORM_block4: | |
4305 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
4306 | break; | |
4307 | case DW_FORM_sdata: | |
4308 | case DW_FORM_udata: | |
4309 | case DW_FORM_ref_udata: | |
4310 | info_ptr = skip_leb128 (abfd, info_ptr); | |
4311 | break; | |
4312 | case DW_FORM_indirect: | |
4313 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4314 | info_ptr += bytes_read; | |
4315 | /* We need to continue parsing from here, so just go back to | |
4316 | the top. */ | |
4317 | goto skip_attribute; | |
4318 | ||
4319 | default: | |
3e43a32a MS |
4320 | error (_("Dwarf Error: Cannot handle %s " |
4321 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
4322 | dwarf_form_name (form), |
4323 | bfd_get_filename (abfd)); | |
4324 | } | |
4325 | } | |
4326 | ||
4327 | if (abbrev->has_children) | |
93311388 | 4328 | return skip_children (buffer, info_ptr, cu); |
4bb7a0a7 DJ |
4329 | else |
4330 | return info_ptr; | |
4331 | } | |
4332 | ||
93311388 DE |
4333 | /* Locate ORIG_PDI's sibling. |
4334 | INFO_PTR should point to the start of the next DIE after ORIG_PDI | |
4335 | in BUFFER. */ | |
91c24f0a | 4336 | |
fe1b8b76 | 4337 | static gdb_byte * |
93311388 DE |
4338 | locate_pdi_sibling (struct partial_die_info *orig_pdi, |
4339 | gdb_byte *buffer, gdb_byte *info_ptr, | |
e7c27a73 | 4340 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
4341 | { |
4342 | /* Do we know the sibling already? */ | |
72bf9492 | 4343 | |
91c24f0a DC |
4344 | if (orig_pdi->sibling) |
4345 | return orig_pdi->sibling; | |
4346 | ||
4347 | /* Are there any children to deal with? */ | |
4348 | ||
4349 | if (!orig_pdi->has_children) | |
4350 | return info_ptr; | |
4351 | ||
4bb7a0a7 | 4352 | /* Skip the children the long way. */ |
91c24f0a | 4353 | |
93311388 | 4354 | return skip_children (buffer, info_ptr, cu); |
91c24f0a DC |
4355 | } |
4356 | ||
c906108c SS |
4357 | /* Expand this partial symbol table into a full symbol table. */ |
4358 | ||
4359 | static void | |
fba45db2 | 4360 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c | 4361 | { |
c906108c SS |
4362 | if (pst != NULL) |
4363 | { | |
4364 | if (pst->readin) | |
4365 | { | |
3e43a32a MS |
4366 | warning (_("bug: psymtab for %s is already read in."), |
4367 | pst->filename); | |
c906108c SS |
4368 | } |
4369 | else | |
4370 | { | |
4371 | if (info_verbose) | |
4372 | { | |
3e43a32a MS |
4373 | printf_filtered (_("Reading in symbols for %s..."), |
4374 | pst->filename); | |
c906108c SS |
4375 | gdb_flush (gdb_stdout); |
4376 | } | |
4377 | ||
10b3939b DJ |
4378 | /* Restore our global data. */ |
4379 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
4380 | dwarf2_objfile_data_key); | |
4381 | ||
b2ab525c KB |
4382 | /* If this psymtab is constructed from a debug-only objfile, the |
4383 | has_section_at_zero flag will not necessarily be correct. We | |
4384 | can get the correct value for this flag by looking at the data | |
4385 | associated with the (presumably stripped) associated objfile. */ | |
4386 | if (pst->objfile->separate_debug_objfile_backlink) | |
4387 | { | |
4388 | struct dwarf2_per_objfile *dpo_backlink | |
4389 | = objfile_data (pst->objfile->separate_debug_objfile_backlink, | |
4390 | dwarf2_objfile_data_key); | |
9a619af0 | 4391 | |
b2ab525c KB |
4392 | dwarf2_per_objfile->has_section_at_zero |
4393 | = dpo_backlink->has_section_at_zero; | |
4394 | } | |
4395 | ||
98bfdba5 PA |
4396 | dwarf2_per_objfile->reading_partial_symbols = 0; |
4397 | ||
c906108c SS |
4398 | psymtab_to_symtab_1 (pst); |
4399 | ||
4400 | /* Finish up the debug error message. */ | |
4401 | if (info_verbose) | |
a3f17187 | 4402 | printf_filtered (_("done.\n")); |
c906108c SS |
4403 | } |
4404 | } | |
4405 | } | |
4406 | ||
10b3939b DJ |
4407 | /* Add PER_CU to the queue. */ |
4408 | ||
4409 | static void | |
03dd20cc | 4410 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b DJ |
4411 | { |
4412 | struct dwarf2_queue_item *item; | |
4413 | ||
4414 | per_cu->queued = 1; | |
4415 | item = xmalloc (sizeof (*item)); | |
4416 | item->per_cu = per_cu; | |
4417 | item->next = NULL; | |
4418 | ||
4419 | if (dwarf2_queue == NULL) | |
4420 | dwarf2_queue = item; | |
4421 | else | |
4422 | dwarf2_queue_tail->next = item; | |
4423 | ||
4424 | dwarf2_queue_tail = item; | |
4425 | } | |
4426 | ||
4427 | /* Process the queue. */ | |
4428 | ||
4429 | static void | |
4430 | process_queue (struct objfile *objfile) | |
4431 | { | |
4432 | struct dwarf2_queue_item *item, *next_item; | |
4433 | ||
03dd20cc DJ |
4434 | /* The queue starts out with one item, but following a DIE reference |
4435 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
4436 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
4437 | { | |
9291a0cd TT |
4438 | if (dwarf2_per_objfile->using_index |
4439 | ? !item->per_cu->v.quick->symtab | |
4440 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
10b3939b DJ |
4441 | process_full_comp_unit (item->per_cu); |
4442 | ||
4443 | item->per_cu->queued = 0; | |
4444 | next_item = item->next; | |
4445 | xfree (item); | |
4446 | } | |
4447 | ||
4448 | dwarf2_queue_tail = NULL; | |
4449 | } | |
4450 | ||
4451 | /* Free all allocated queue entries. This function only releases anything if | |
4452 | an error was thrown; if the queue was processed then it would have been | |
4453 | freed as we went along. */ | |
4454 | ||
4455 | static void | |
4456 | dwarf2_release_queue (void *dummy) | |
4457 | { | |
4458 | struct dwarf2_queue_item *item, *last; | |
4459 | ||
4460 | item = dwarf2_queue; | |
4461 | while (item) | |
4462 | { | |
4463 | /* Anything still marked queued is likely to be in an | |
4464 | inconsistent state, so discard it. */ | |
4465 | if (item->per_cu->queued) | |
4466 | { | |
4467 | if (item->per_cu->cu != NULL) | |
4468 | free_one_cached_comp_unit (item->per_cu->cu); | |
4469 | item->per_cu->queued = 0; | |
4470 | } | |
4471 | ||
4472 | last = item; | |
4473 | item = item->next; | |
4474 | xfree (last); | |
4475 | } | |
4476 | ||
4477 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
4478 | } | |
4479 | ||
4480 | /* Read in full symbols for PST, and anything it depends on. */ | |
4481 | ||
c906108c | 4482 | static void |
fba45db2 | 4483 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 4484 | { |
10b3939b | 4485 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 4486 | struct cleanup *back_to; |
aaa75496 JB |
4487 | int i; |
4488 | ||
4489 | for (i = 0; i < pst->number_of_dependencies; i++) | |
4490 | if (!pst->dependencies[i]->readin) | |
4491 | { | |
4492 | /* Inform about additional files that need to be read in. */ | |
4493 | if (info_verbose) | |
4494 | { | |
a3f17187 | 4495 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
4496 | fputs_filtered (" ", gdb_stdout); |
4497 | wrap_here (""); | |
4498 | fputs_filtered ("and ", gdb_stdout); | |
4499 | wrap_here (""); | |
4500 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 4501 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
4502 | gdb_flush (gdb_stdout); |
4503 | } | |
4504 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
4505 | } | |
4506 | ||
e38df1d0 | 4507 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
4508 | |
4509 | if (per_cu == NULL) | |
aaa75496 JB |
4510 | { |
4511 | /* It's an include file, no symbols to read for it. | |
4512 | Everything is in the parent symtab. */ | |
4513 | pst->readin = 1; | |
4514 | return; | |
4515 | } | |
c906108c | 4516 | |
9291a0cd | 4517 | dw2_do_instantiate_symtab (pst->objfile, per_cu); |
10b3939b DJ |
4518 | } |
4519 | ||
93311388 | 4520 | /* Load the DIEs associated with PER_CU into memory. */ |
10b3939b | 4521 | |
93311388 | 4522 | static void |
3e43a32a MS |
4523 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
4524 | struct objfile *objfile) | |
10b3939b | 4525 | { |
31ffec48 | 4526 | bfd *abfd = objfile->obfd; |
10b3939b | 4527 | struct dwarf2_cu *cu; |
c764a876 | 4528 | unsigned int offset; |
93311388 | 4529 | gdb_byte *info_ptr, *beg_of_comp_unit; |
98bfdba5 | 4530 | struct cleanup *free_abbrevs_cleanup = NULL, *free_cu_cleanup = NULL; |
10b3939b | 4531 | struct attribute *attr; |
98bfdba5 | 4532 | int read_cu = 0; |
6502dd73 | 4533 | |
348e048f DE |
4534 | gdb_assert (! per_cu->from_debug_types); |
4535 | ||
c906108c | 4536 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 4537 | offset = per_cu->offset; |
6502dd73 | 4538 | |
be391dca | 4539 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
dce234bc | 4540 | info_ptr = dwarf2_per_objfile->info.buffer + offset; |
93311388 | 4541 | beg_of_comp_unit = info_ptr; |
63d06c5c | 4542 | |
98bfdba5 PA |
4543 | if (per_cu->cu == NULL) |
4544 | { | |
9816fde3 JK |
4545 | cu = xmalloc (sizeof (*cu)); |
4546 | init_one_comp_unit (cu, objfile); | |
98bfdba5 PA |
4547 | |
4548 | read_cu = 1; | |
c906108c | 4549 | |
98bfdba5 PA |
4550 | /* If an error occurs while loading, release our storage. */ |
4551 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 4552 | |
98bfdba5 PA |
4553 | /* Read in the comp_unit header. */ |
4554 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); | |
c906108c | 4555 | |
98bfdba5 PA |
4556 | /* Complete the cu_header. */ |
4557 | cu->header.offset = offset; | |
4558 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; | |
93311388 | 4559 | |
98bfdba5 PA |
4560 | /* Read the abbrevs for this compilation unit. */ |
4561 | dwarf2_read_abbrevs (abfd, cu); | |
4562 | free_abbrevs_cleanup = make_cleanup (dwarf2_free_abbrev_table, cu); | |
10b3939b | 4563 | |
98bfdba5 PA |
4564 | /* Link this compilation unit into the compilation unit tree. */ |
4565 | per_cu->cu = cu; | |
4566 | cu->per_cu = per_cu; | |
98bfdba5 PA |
4567 | |
4568 | /* Link this CU into read_in_chain. */ | |
4569 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
4570 | dwarf2_per_objfile->read_in_chain = per_cu; | |
4571 | } | |
4572 | else | |
4573 | { | |
4574 | cu = per_cu->cu; | |
4575 | info_ptr += cu->header.first_die_offset; | |
4576 | } | |
e142c38c | 4577 | |
93311388 | 4578 | cu->dies = read_comp_unit (info_ptr, cu); |
10b3939b DJ |
4579 | |
4580 | /* We try not to read any attributes in this function, because not | |
4581 | all objfiles needed for references have been loaded yet, and symbol | |
4582 | table processing isn't initialized. But we have to set the CU language, | |
4583 | or we won't be able to build types correctly. */ | |
9816fde3 | 4584 | prepare_one_comp_unit (cu, cu->dies); |
10b3939b | 4585 | |
a6c727b2 DJ |
4586 | /* Similarly, if we do not read the producer, we can not apply |
4587 | producer-specific interpretation. */ | |
4588 | attr = dwarf2_attr (cu->dies, DW_AT_producer, cu); | |
4589 | if (attr) | |
4590 | cu->producer = DW_STRING (attr); | |
4591 | ||
98bfdba5 PA |
4592 | if (read_cu) |
4593 | { | |
4594 | do_cleanups (free_abbrevs_cleanup); | |
e142c38c | 4595 | |
98bfdba5 PA |
4596 | /* We've successfully allocated this compilation unit. Let our |
4597 | caller clean it up when finished with it. */ | |
4598 | discard_cleanups (free_cu_cleanup); | |
4599 | } | |
10b3939b DJ |
4600 | } |
4601 | ||
3da10d80 KS |
4602 | /* Add a DIE to the delayed physname list. */ |
4603 | ||
4604 | static void | |
4605 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
4606 | const char *name, struct die_info *die, | |
4607 | struct dwarf2_cu *cu) | |
4608 | { | |
4609 | struct delayed_method_info mi; | |
4610 | mi.type = type; | |
4611 | mi.fnfield_index = fnfield_index; | |
4612 | mi.index = index; | |
4613 | mi.name = name; | |
4614 | mi.die = die; | |
4615 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
4616 | } | |
4617 | ||
4618 | /* A cleanup for freeing the delayed method list. */ | |
4619 | ||
4620 | static void | |
4621 | free_delayed_list (void *ptr) | |
4622 | { | |
4623 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
4624 | if (cu->method_list != NULL) | |
4625 | { | |
4626 | VEC_free (delayed_method_info, cu->method_list); | |
4627 | cu->method_list = NULL; | |
4628 | } | |
4629 | } | |
4630 | ||
4631 | /* Compute the physnames of any methods on the CU's method list. | |
4632 | ||
4633 | The computation of method physnames is delayed in order to avoid the | |
4634 | (bad) condition that one of the method's formal parameters is of an as yet | |
4635 | incomplete type. */ | |
4636 | ||
4637 | static void | |
4638 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
4639 | { | |
4640 | int i; | |
4641 | struct delayed_method_info *mi; | |
4642 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
4643 | { | |
1d06ead6 | 4644 | const char *physname; |
3da10d80 KS |
4645 | struct fn_fieldlist *fn_flp |
4646 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
1d06ead6 | 4647 | physname = dwarf2_physname ((char *) mi->name, mi->die, cu); |
3da10d80 KS |
4648 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; |
4649 | } | |
4650 | } | |
4651 | ||
4632c0d0 JK |
4652 | /* Check for GCC >= 4.x. Return minor version (x) of 4.x in such case. If it |
4653 | is not GCC or it is GCC older than 4.x return -1. If it is GCC 5.x or | |
4654 | higher return INT_MAX. */ | |
8be455d7 JK |
4655 | |
4656 | static int | |
4632c0d0 | 4657 | producer_is_gcc_ge_4 (struct dwarf2_cu *cu) |
8be455d7 JK |
4658 | { |
4659 | const char *cs; | |
4660 | int major, minor; | |
4661 | ||
4662 | if (cu->producer == NULL) | |
4663 | { | |
4664 | /* For unknown compilers expect their behavior is not compliant. For GCC | |
4665 | this case can also happen for -gdwarf-4 type units supported since | |
4666 | gcc-4.5. */ | |
4667 | ||
4632c0d0 | 4668 | return -1; |
8be455d7 JK |
4669 | } |
4670 | ||
4671 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ | |
4672 | ||
4673 | if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) != 0) | |
4674 | { | |
4675 | /* For non-GCC compilers expect their behavior is not compliant. */ | |
4676 | ||
4632c0d0 | 4677 | return -1; |
8be455d7 JK |
4678 | } |
4679 | cs = &cu->producer[strlen ("GNU ")]; | |
4680 | while (*cs && !isdigit (*cs)) | |
4681 | cs++; | |
4682 | if (sscanf (cs, "%d.%d", &major, &minor) != 2) | |
4683 | { | |
4684 | /* Not recognized as GCC. */ | |
4685 | ||
4632c0d0 | 4686 | return -1; |
8be455d7 JK |
4687 | } |
4688 | ||
4632c0d0 JK |
4689 | if (major < 4) |
4690 | return -1; | |
4691 | if (major > 4) | |
4692 | return INT_MAX; | |
4693 | return minor; | |
8be455d7 JK |
4694 | } |
4695 | ||
10b3939b DJ |
4696 | /* Generate full symbol information for PST and CU, whose DIEs have |
4697 | already been loaded into memory. */ | |
4698 | ||
4699 | static void | |
4700 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
4701 | { | |
10b3939b | 4702 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 4703 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
4704 | CORE_ADDR lowpc, highpc; |
4705 | struct symtab *symtab; | |
3da10d80 | 4706 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b DJ |
4707 | CORE_ADDR baseaddr; |
4708 | ||
4709 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
4710 | ||
10b3939b DJ |
4711 | buildsym_init (); |
4712 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 4713 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
4714 | |
4715 | cu->list_in_scope = &file_symbols; | |
c906108c | 4716 | |
d85a05f0 | 4717 | dwarf2_find_base_address (cu->dies, cu); |
0d53c4c4 | 4718 | |
c906108c | 4719 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 4720 | process_die (cu->dies, cu); |
c906108c | 4721 | |
3da10d80 KS |
4722 | /* Now that we have processed all the DIEs in the CU, all the types |
4723 | should be complete, and it should now be safe to compute all of the | |
4724 | physnames. */ | |
4725 | compute_delayed_physnames (cu); | |
4726 | do_cleanups (delayed_list_cleanup); | |
4727 | ||
fae299cd DC |
4728 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
4729 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
4730 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 4731 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 4732 | |
613e1657 | 4733 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c | 4734 | |
8be455d7 | 4735 | if (symtab != NULL) |
c906108c | 4736 | { |
4632c0d0 JK |
4737 | int gcc_4_minor = producer_is_gcc_ge_4 (cu); |
4738 | ||
8be455d7 JK |
4739 | /* Set symtab language to language from DW_AT_language. If the |
4740 | compilation is from a C file generated by language preprocessors, do | |
4741 | not set the language if it was already deduced by start_subfile. */ | |
4742 | if (!(cu->language == language_c && symtab->language != language_c)) | |
4743 | symtab->language = cu->language; | |
4744 | ||
4745 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
4746 | produce DW_AT_location with location lists but it can be possibly | |
4747 | invalid without -fvar-tracking. | |
4748 | ||
4749 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
4750 | needed, it would be wrong due to missing DW_AT_producer there. | |
4751 | ||
4752 | Still one can confuse GDB by using non-standard GCC compilation | |
4753 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
4754 | */ | |
4632c0d0 | 4755 | if (cu->has_loclist && gcc_4_minor >= 0) |
8be455d7 | 4756 | symtab->locations_valid = 1; |
e0d00bc7 JK |
4757 | |
4758 | if (gcc_4_minor >= 5) | |
4759 | symtab->epilogue_unwind_valid = 1; | |
c906108c | 4760 | } |
9291a0cd TT |
4761 | |
4762 | if (dwarf2_per_objfile->using_index) | |
4763 | per_cu->v.quick->symtab = symtab; | |
4764 | else | |
4765 | { | |
4766 | struct partial_symtab *pst = per_cu->v.psymtab; | |
4767 | pst->symtab = symtab; | |
4768 | pst->readin = 1; | |
4769 | } | |
c906108c SS |
4770 | |
4771 | do_cleanups (back_to); | |
4772 | } | |
4773 | ||
4774 | /* Process a die and its children. */ | |
4775 | ||
4776 | static void | |
e7c27a73 | 4777 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4778 | { |
4779 | switch (die->tag) | |
4780 | { | |
4781 | case DW_TAG_padding: | |
4782 | break; | |
4783 | case DW_TAG_compile_unit: | |
e7c27a73 | 4784 | read_file_scope (die, cu); |
c906108c | 4785 | break; |
348e048f DE |
4786 | case DW_TAG_type_unit: |
4787 | read_type_unit_scope (die, cu); | |
4788 | break; | |
c906108c | 4789 | case DW_TAG_subprogram: |
c906108c | 4790 | case DW_TAG_inlined_subroutine: |
edb3359d | 4791 | read_func_scope (die, cu); |
c906108c SS |
4792 | break; |
4793 | case DW_TAG_lexical_block: | |
14898363 L |
4794 | case DW_TAG_try_block: |
4795 | case DW_TAG_catch_block: | |
e7c27a73 | 4796 | read_lexical_block_scope (die, cu); |
c906108c SS |
4797 | break; |
4798 | case DW_TAG_class_type: | |
680b30c7 | 4799 | case DW_TAG_interface_type: |
c906108c SS |
4800 | case DW_TAG_structure_type: |
4801 | case DW_TAG_union_type: | |
134d01f1 | 4802 | process_structure_scope (die, cu); |
c906108c SS |
4803 | break; |
4804 | case DW_TAG_enumeration_type: | |
134d01f1 | 4805 | process_enumeration_scope (die, cu); |
c906108c | 4806 | break; |
134d01f1 | 4807 | |
f792889a DJ |
4808 | /* These dies have a type, but processing them does not create |
4809 | a symbol or recurse to process the children. Therefore we can | |
4810 | read them on-demand through read_type_die. */ | |
c906108c | 4811 | case DW_TAG_subroutine_type: |
72019c9c | 4812 | case DW_TAG_set_type: |
c906108c | 4813 | case DW_TAG_array_type: |
c906108c | 4814 | case DW_TAG_pointer_type: |
c906108c | 4815 | case DW_TAG_ptr_to_member_type: |
c906108c | 4816 | case DW_TAG_reference_type: |
c906108c | 4817 | case DW_TAG_string_type: |
c906108c | 4818 | break; |
134d01f1 | 4819 | |
c906108c | 4820 | case DW_TAG_base_type: |
a02abb62 | 4821 | case DW_TAG_subrange_type: |
cb249c71 | 4822 | case DW_TAG_typedef: |
134d01f1 DJ |
4823 | /* Add a typedef symbol for the type definition, if it has a |
4824 | DW_AT_name. */ | |
f792889a | 4825 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 4826 | break; |
c906108c | 4827 | case DW_TAG_common_block: |
e7c27a73 | 4828 | read_common_block (die, cu); |
c906108c SS |
4829 | break; |
4830 | case DW_TAG_common_inclusion: | |
4831 | break; | |
d9fa45fe | 4832 | case DW_TAG_namespace: |
63d06c5c | 4833 | processing_has_namespace_info = 1; |
e7c27a73 | 4834 | read_namespace (die, cu); |
d9fa45fe | 4835 | break; |
5d7cb8df | 4836 | case DW_TAG_module: |
f55ee35c | 4837 | processing_has_namespace_info = 1; |
5d7cb8df JK |
4838 | read_module (die, cu); |
4839 | break; | |
d9fa45fe DC |
4840 | case DW_TAG_imported_declaration: |
4841 | case DW_TAG_imported_module: | |
63d06c5c | 4842 | processing_has_namespace_info = 1; |
27aa8d6a SW |
4843 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
4844 | || cu->language != language_fortran)) | |
4845 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
4846 | dwarf_tag_name (die->tag)); | |
4847 | read_import_statement (die, cu); | |
d9fa45fe | 4848 | break; |
c906108c | 4849 | default: |
e7c27a73 | 4850 | new_symbol (die, NULL, cu); |
c906108c SS |
4851 | break; |
4852 | } | |
4853 | } | |
4854 | ||
94af9270 KS |
4855 | /* A helper function for dwarf2_compute_name which determines whether DIE |
4856 | needs to have the name of the scope prepended to the name listed in the | |
4857 | die. */ | |
4858 | ||
4859 | static int | |
4860 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
4861 | { | |
1c809c68 TT |
4862 | struct attribute *attr; |
4863 | ||
94af9270 KS |
4864 | switch (die->tag) |
4865 | { | |
4866 | case DW_TAG_namespace: | |
4867 | case DW_TAG_typedef: | |
4868 | case DW_TAG_class_type: | |
4869 | case DW_TAG_interface_type: | |
4870 | case DW_TAG_structure_type: | |
4871 | case DW_TAG_union_type: | |
4872 | case DW_TAG_enumeration_type: | |
4873 | case DW_TAG_enumerator: | |
4874 | case DW_TAG_subprogram: | |
4875 | case DW_TAG_member: | |
4876 | return 1; | |
4877 | ||
4878 | case DW_TAG_variable: | |
c2b0a229 | 4879 | case DW_TAG_constant: |
94af9270 KS |
4880 | /* We only need to prefix "globally" visible variables. These include |
4881 | any variable marked with DW_AT_external or any variable that | |
4882 | lives in a namespace. [Variables in anonymous namespaces | |
4883 | require prefixing, but they are not DW_AT_external.] */ | |
4884 | ||
4885 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
4886 | { | |
4887 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 4888 | |
94af9270 KS |
4889 | return die_needs_namespace (die_specification (die, &spec_cu), |
4890 | spec_cu); | |
4891 | } | |
4892 | ||
1c809c68 | 4893 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
4894 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
4895 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
4896 | return 0; |
4897 | /* A variable in a lexical block of some kind does not need a | |
4898 | namespace, even though in C++ such variables may be external | |
4899 | and have a mangled name. */ | |
4900 | if (die->parent->tag == DW_TAG_lexical_block | |
4901 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
4902 | || die->parent->tag == DW_TAG_catch_block |
4903 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
4904 | return 0; |
4905 | return 1; | |
94af9270 KS |
4906 | |
4907 | default: | |
4908 | return 0; | |
4909 | } | |
4910 | } | |
4911 | ||
98bfdba5 PA |
4912 | /* Retrieve the last character from a mem_file. */ |
4913 | ||
4914 | static void | |
4915 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
4916 | { | |
4917 | char *last_char_p = (char *) object; | |
4918 | ||
4919 | if (length > 0) | |
4920 | *last_char_p = buffer[length - 1]; | |
4921 | } | |
4922 | ||
94af9270 KS |
4923 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
4924 | compute the physname for the object, which include a method's | |
4925 | formal parameters (C++/Java) and return type (Java). | |
4926 | ||
af6b7be1 JB |
4927 | For Ada, return the DIE's linkage name rather than the fully qualified |
4928 | name. PHYSNAME is ignored.. | |
4929 | ||
94af9270 KS |
4930 | The result is allocated on the objfile_obstack and canonicalized. */ |
4931 | ||
4932 | static const char * | |
4933 | dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu, | |
4934 | int physname) | |
4935 | { | |
4936 | if (name == NULL) | |
4937 | name = dwarf2_name (die, cu); | |
4938 | ||
f55ee35c JK |
4939 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
4940 | compute it by typename_concat inside GDB. */ | |
4941 | if (cu->language == language_ada | |
4942 | || (cu->language == language_fortran && physname)) | |
4943 | { | |
4944 | /* For Ada unit, we prefer the linkage name over the name, as | |
4945 | the former contains the exported name, which the user expects | |
4946 | to be able to reference. Ideally, we want the user to be able | |
4947 | to reference this entity using either natural or linkage name, | |
4948 | but we haven't started looking at this enhancement yet. */ | |
4949 | struct attribute *attr; | |
4950 | ||
4951 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
4952 | if (attr == NULL) | |
4953 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
4954 | if (attr && DW_STRING (attr)) | |
4955 | return DW_STRING (attr); | |
4956 | } | |
4957 | ||
94af9270 KS |
4958 | /* These are the only languages we know how to qualify names in. */ |
4959 | if (name != NULL | |
f55ee35c JK |
4960 | && (cu->language == language_cplus || cu->language == language_java |
4961 | || cu->language == language_fortran)) | |
94af9270 KS |
4962 | { |
4963 | if (die_needs_namespace (die, cu)) | |
4964 | { | |
4965 | long length; | |
4966 | char *prefix; | |
4967 | struct ui_file *buf; | |
4968 | ||
4969 | prefix = determine_prefix (die, cu); | |
4970 | buf = mem_fileopen (); | |
4971 | if (*prefix != '\0') | |
4972 | { | |
f55ee35c JK |
4973 | char *prefixed_name = typename_concat (NULL, prefix, name, |
4974 | physname, cu); | |
9a619af0 | 4975 | |
94af9270 KS |
4976 | fputs_unfiltered (prefixed_name, buf); |
4977 | xfree (prefixed_name); | |
4978 | } | |
4979 | else | |
62d5b8da | 4980 | fputs_unfiltered (name, buf); |
94af9270 | 4981 | |
98bfdba5 PA |
4982 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
4983 | as children with DW_TAG_template_type_param or | |
4984 | DW_TAG_value_type_param. If the latter, add them to the name | |
4985 | here. If the name already has template parameters, then | |
4986 | skip this step; some versions of GCC emit both, and | |
4987 | it is more efficient to use the pre-computed name. | |
4988 | ||
4989 | Something to keep in mind about this process: it is very | |
4990 | unlikely, or in some cases downright impossible, to produce | |
4991 | something that will match the mangled name of a function. | |
4992 | If the definition of the function has the same debug info, | |
4993 | we should be able to match up with it anyway. But fallbacks | |
4994 | using the minimal symbol, for instance to find a method | |
4995 | implemented in a stripped copy of libstdc++, will not work. | |
4996 | If we do not have debug info for the definition, we will have to | |
4997 | match them up some other way. | |
4998 | ||
4999 | When we do name matching there is a related problem with function | |
5000 | templates; two instantiated function templates are allowed to | |
5001 | differ only by their return types, which we do not add here. */ | |
5002 | ||
5003 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
5004 | { | |
5005 | struct attribute *attr; | |
5006 | struct die_info *child; | |
5007 | int first = 1; | |
5008 | ||
5009 | die->building_fullname = 1; | |
5010 | ||
5011 | for (child = die->child; child != NULL; child = child->sibling) | |
5012 | { | |
5013 | struct type *type; | |
5014 | long value; | |
5015 | gdb_byte *bytes; | |
5016 | struct dwarf2_locexpr_baton *baton; | |
5017 | struct value *v; | |
5018 | ||
5019 | if (child->tag != DW_TAG_template_type_param | |
5020 | && child->tag != DW_TAG_template_value_param) | |
5021 | continue; | |
5022 | ||
5023 | if (first) | |
5024 | { | |
5025 | fputs_unfiltered ("<", buf); | |
5026 | first = 0; | |
5027 | } | |
5028 | else | |
5029 | fputs_unfiltered (", ", buf); | |
5030 | ||
5031 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
5032 | if (attr == NULL) | |
5033 | { | |
5034 | complaint (&symfile_complaints, | |
5035 | _("template parameter missing DW_AT_type")); | |
5036 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
5037 | continue; | |
5038 | } | |
5039 | type = die_type (child, cu); | |
5040 | ||
5041 | if (child->tag == DW_TAG_template_type_param) | |
5042 | { | |
5043 | c_print_type (type, "", buf, -1, 0); | |
5044 | continue; | |
5045 | } | |
5046 | ||
5047 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
5048 | if (attr == NULL) | |
5049 | { | |
5050 | complaint (&symfile_complaints, | |
3e43a32a MS |
5051 | _("template parameter missing " |
5052 | "DW_AT_const_value")); | |
98bfdba5 PA |
5053 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
5054 | continue; | |
5055 | } | |
5056 | ||
5057 | dwarf2_const_value_attr (attr, type, name, | |
5058 | &cu->comp_unit_obstack, cu, | |
5059 | &value, &bytes, &baton); | |
5060 | ||
5061 | if (TYPE_NOSIGN (type)) | |
5062 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
5063 | changed, this can use value_print instead. */ | |
5064 | c_printchar (value, type, buf); | |
5065 | else | |
5066 | { | |
5067 | struct value_print_options opts; | |
5068 | ||
5069 | if (baton != NULL) | |
5070 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
5071 | baton->data, | |
5072 | baton->size, | |
5073 | baton->per_cu); | |
5074 | else if (bytes != NULL) | |
5075 | { | |
5076 | v = allocate_value (type); | |
5077 | memcpy (value_contents_writeable (v), bytes, | |
5078 | TYPE_LENGTH (type)); | |
5079 | } | |
5080 | else | |
5081 | v = value_from_longest (type, value); | |
5082 | ||
3e43a32a MS |
5083 | /* Specify decimal so that we do not depend on |
5084 | the radix. */ | |
98bfdba5 PA |
5085 | get_formatted_print_options (&opts, 'd'); |
5086 | opts.raw = 1; | |
5087 | value_print (v, buf, &opts); | |
5088 | release_value (v); | |
5089 | value_free (v); | |
5090 | } | |
5091 | } | |
5092 | ||
5093 | die->building_fullname = 0; | |
5094 | ||
5095 | if (!first) | |
5096 | { | |
5097 | /* Close the argument list, with a space if necessary | |
5098 | (nested templates). */ | |
5099 | char last_char = '\0'; | |
5100 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
5101 | if (last_char == '>') | |
5102 | fputs_unfiltered (" >", buf); | |
5103 | else | |
5104 | fputs_unfiltered (">", buf); | |
5105 | } | |
5106 | } | |
5107 | ||
94af9270 KS |
5108 | /* For Java and C++ methods, append formal parameter type |
5109 | information, if PHYSNAME. */ | |
6e70227d | 5110 | |
94af9270 KS |
5111 | if (physname && die->tag == DW_TAG_subprogram |
5112 | && (cu->language == language_cplus | |
5113 | || cu->language == language_java)) | |
5114 | { | |
5115 | struct type *type = read_type_die (die, cu); | |
5116 | ||
3167638f | 5117 | c_type_print_args (type, buf, 1, cu->language); |
94af9270 KS |
5118 | |
5119 | if (cu->language == language_java) | |
5120 | { | |
5121 | /* For java, we must append the return type to method | |
0963b4bd | 5122 | names. */ |
94af9270 KS |
5123 | if (die->tag == DW_TAG_subprogram) |
5124 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
5125 | 0, 0); | |
5126 | } | |
5127 | else if (cu->language == language_cplus) | |
5128 | { | |
60430eff DJ |
5129 | /* Assume that an artificial first parameter is |
5130 | "this", but do not crash if it is not. RealView | |
5131 | marks unnamed (and thus unused) parameters as | |
5132 | artificial; there is no way to differentiate | |
5133 | the two cases. */ | |
94af9270 KS |
5134 | if (TYPE_NFIELDS (type) > 0 |
5135 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 5136 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
5137 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
5138 | 0)))) | |
94af9270 KS |
5139 | fputs_unfiltered (" const", buf); |
5140 | } | |
5141 | } | |
5142 | ||
5143 | name = ui_file_obsavestring (buf, &cu->objfile->objfile_obstack, | |
5144 | &length); | |
5145 | ui_file_delete (buf); | |
5146 | ||
5147 | if (cu->language == language_cplus) | |
5148 | { | |
5149 | char *cname | |
5150 | = dwarf2_canonicalize_name (name, cu, | |
5151 | &cu->objfile->objfile_obstack); | |
9a619af0 | 5152 | |
94af9270 KS |
5153 | if (cname != NULL) |
5154 | name = cname; | |
5155 | } | |
5156 | } | |
5157 | } | |
5158 | ||
5159 | return name; | |
5160 | } | |
5161 | ||
0114d602 DJ |
5162 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
5163 | If scope qualifiers are appropriate they will be added. The result | |
5164 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
5165 | not have a name. NAME may either be from a previous call to |
5166 | dwarf2_name or NULL. | |
5167 | ||
0963b4bd | 5168 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
5169 | |
5170 | static const char * | |
94af9270 | 5171 | dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 5172 | { |
94af9270 KS |
5173 | return dwarf2_compute_name (name, die, cu, 0); |
5174 | } | |
0114d602 | 5175 | |
94af9270 KS |
5176 | /* Construct a physname for the given DIE in CU. NAME may either be |
5177 | from a previous call to dwarf2_name or NULL. The result will be | |
5178 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
5179 | name. | |
0114d602 | 5180 | |
94af9270 | 5181 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 5182 | |
94af9270 KS |
5183 | static const char * |
5184 | dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu) | |
5185 | { | |
900e11f9 JK |
5186 | struct attribute *attr; |
5187 | const char *retval, *mangled = NULL, *canon = NULL; | |
5188 | struct cleanup *back_to; | |
5189 | int need_copy = 1; | |
5190 | ||
5191 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
5192 | on its own. */ | |
5193 | if (!die_needs_namespace (die, cu)) | |
5194 | return dwarf2_compute_name (name, die, cu, 1); | |
5195 | ||
5196 | back_to = make_cleanup (null_cleanup, NULL); | |
5197 | ||
5198 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
5199 | if (!attr) | |
5200 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
5201 | ||
5202 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
5203 | has computed. */ | |
5204 | if (attr && DW_STRING (attr)) | |
5205 | { | |
5206 | char *demangled; | |
5207 | ||
5208 | mangled = DW_STRING (attr); | |
5209 | ||
5210 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
5211 | type. It is easier for GDB users to search for such functions as | |
5212 | `name(params)' than `long name(params)'. In such case the minimal | |
5213 | symbol names do not match the full symbol names but for template | |
5214 | functions there is never a need to look up their definition from their | |
5215 | declaration so the only disadvantage remains the minimal symbol | |
5216 | variant `long name(params)' does not have the proper inferior type. | |
5217 | */ | |
5218 | ||
5219 | demangled = cplus_demangle (mangled, (DMGL_PARAMS | DMGL_ANSI | |
5220 | | (cu->language == language_java | |
5221 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
5222 | : DMGL_RET_DROP))); | |
5223 | if (demangled) | |
5224 | { | |
5225 | make_cleanup (xfree, demangled); | |
5226 | canon = demangled; | |
5227 | } | |
5228 | else | |
5229 | { | |
5230 | canon = mangled; | |
5231 | need_copy = 0; | |
5232 | } | |
5233 | } | |
5234 | ||
5235 | if (canon == NULL || check_physname) | |
5236 | { | |
5237 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
5238 | ||
5239 | if (canon != NULL && strcmp (physname, canon) != 0) | |
5240 | { | |
5241 | /* It may not mean a bug in GDB. The compiler could also | |
5242 | compute DW_AT_linkage_name incorrectly. But in such case | |
5243 | GDB would need to be bug-to-bug compatible. */ | |
5244 | ||
5245 | complaint (&symfile_complaints, | |
5246 | _("Computed physname <%s> does not match demangled <%s> " | |
5247 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
5248 | physname, canon, mangled, die->offset, cu->objfile->name); | |
5249 | ||
5250 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
5251 | is available here - over computed PHYSNAME. It is safer | |
5252 | against both buggy GDB and buggy compilers. */ | |
5253 | ||
5254 | retval = canon; | |
5255 | } | |
5256 | else | |
5257 | { | |
5258 | retval = physname; | |
5259 | need_copy = 0; | |
5260 | } | |
5261 | } | |
5262 | else | |
5263 | retval = canon; | |
5264 | ||
5265 | if (need_copy) | |
5266 | retval = obsavestring (retval, strlen (retval), | |
5267 | &cu->objfile->objfile_obstack); | |
5268 | ||
5269 | do_cleanups (back_to); | |
5270 | return retval; | |
0114d602 DJ |
5271 | } |
5272 | ||
27aa8d6a SW |
5273 | /* Read the import statement specified by the given die and record it. */ |
5274 | ||
5275 | static void | |
5276 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
5277 | { | |
5278 | struct attribute *import_attr; | |
32019081 | 5279 | struct die_info *imported_die, *child_die; |
de4affc9 | 5280 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 5281 | const char *imported_name; |
794684b6 | 5282 | const char *imported_name_prefix; |
13387711 SW |
5283 | const char *canonical_name; |
5284 | const char *import_alias; | |
5285 | const char *imported_declaration = NULL; | |
794684b6 | 5286 | const char *import_prefix; |
32019081 JK |
5287 | VEC (const_char_ptr) *excludes = NULL; |
5288 | struct cleanup *cleanups; | |
13387711 SW |
5289 | |
5290 | char *temp; | |
27aa8d6a SW |
5291 | |
5292 | import_attr = dwarf2_attr (die, DW_AT_import, cu); | |
5293 | if (import_attr == NULL) | |
5294 | { | |
5295 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
5296 | dwarf_tag_name (die->tag)); | |
5297 | return; | |
5298 | } | |
5299 | ||
de4affc9 CC |
5300 | imported_cu = cu; |
5301 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
5302 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
5303 | if (imported_name == NULL) |
5304 | { | |
5305 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
5306 | ||
5307 | The import in the following code: | |
5308 | namespace A | |
5309 | { | |
5310 | typedef int B; | |
5311 | } | |
5312 | ||
5313 | int main () | |
5314 | { | |
5315 | using A::B; | |
5316 | B b; | |
5317 | return b; | |
5318 | } | |
5319 | ||
5320 | ... | |
5321 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
5322 | <52> DW_AT_decl_file : 1 | |
5323 | <53> DW_AT_decl_line : 6 | |
5324 | <54> DW_AT_import : <0x75> | |
5325 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
5326 | <59> DW_AT_name : B | |
5327 | <5b> DW_AT_decl_file : 1 | |
5328 | <5c> DW_AT_decl_line : 2 | |
5329 | <5d> DW_AT_type : <0x6e> | |
5330 | ... | |
5331 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
5332 | <76> DW_AT_byte_size : 4 | |
5333 | <77> DW_AT_encoding : 5 (signed) | |
5334 | ||
5335 | imports the wrong die ( 0x75 instead of 0x58 ). | |
5336 | This case will be ignored until the gcc bug is fixed. */ | |
5337 | return; | |
5338 | } | |
5339 | ||
82856980 SW |
5340 | /* Figure out the local name after import. */ |
5341 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 5342 | |
794684b6 SW |
5343 | /* Figure out where the statement is being imported to. */ |
5344 | import_prefix = determine_prefix (die, cu); | |
5345 | ||
5346 | /* Figure out what the scope of the imported die is and prepend it | |
5347 | to the name of the imported die. */ | |
de4affc9 | 5348 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 5349 | |
f55ee35c JK |
5350 | if (imported_die->tag != DW_TAG_namespace |
5351 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 5352 | { |
13387711 SW |
5353 | imported_declaration = imported_name; |
5354 | canonical_name = imported_name_prefix; | |
794684b6 | 5355 | } |
13387711 | 5356 | else if (strlen (imported_name_prefix) > 0) |
794684b6 | 5357 | { |
13387711 SW |
5358 | temp = alloca (strlen (imported_name_prefix) |
5359 | + 2 + strlen (imported_name) + 1); | |
5360 | strcpy (temp, imported_name_prefix); | |
5361 | strcat (temp, "::"); | |
5362 | strcat (temp, imported_name); | |
5363 | canonical_name = temp; | |
794684b6 | 5364 | } |
13387711 SW |
5365 | else |
5366 | canonical_name = imported_name; | |
794684b6 | 5367 | |
32019081 JK |
5368 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
5369 | ||
5370 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
5371 | for (child_die = die->child; child_die && child_die->tag; | |
5372 | child_die = sibling_die (child_die)) | |
5373 | { | |
5374 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
5375 | represented by an imported module entry with an import attribute | |
5376 | referring to the module and owned entries corresponding to those | |
5377 | entities that are renamed as part of being imported. */ | |
5378 | ||
5379 | if (child_die->tag != DW_TAG_imported_declaration) | |
5380 | { | |
5381 | complaint (&symfile_complaints, | |
5382 | _("child DW_TAG_imported_declaration expected " | |
5383 | "- DIE at 0x%x [in module %s]"), | |
5384 | child_die->offset, cu->objfile->name); | |
5385 | continue; | |
5386 | } | |
5387 | ||
5388 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
5389 | if (import_attr == NULL) | |
5390 | { | |
5391 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
5392 | dwarf_tag_name (child_die->tag)); | |
5393 | continue; | |
5394 | } | |
5395 | ||
5396 | imported_cu = cu; | |
5397 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
5398 | &imported_cu); | |
5399 | imported_name = dwarf2_name (imported_die, imported_cu); | |
5400 | if (imported_name == NULL) | |
5401 | { | |
5402 | complaint (&symfile_complaints, | |
5403 | _("child DW_TAG_imported_declaration has unknown " | |
5404 | "imported name - DIE at 0x%x [in module %s]"), | |
5405 | child_die->offset, cu->objfile->name); | |
5406 | continue; | |
5407 | } | |
5408 | ||
5409 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
5410 | ||
5411 | process_die (child_die, cu); | |
5412 | } | |
5413 | ||
c0cc3a76 SW |
5414 | cp_add_using_directive (import_prefix, |
5415 | canonical_name, | |
5416 | import_alias, | |
13387711 | 5417 | imported_declaration, |
32019081 | 5418 | excludes, |
c0cc3a76 | 5419 | &cu->objfile->objfile_obstack); |
32019081 JK |
5420 | |
5421 | do_cleanups (cleanups); | |
27aa8d6a SW |
5422 | } |
5423 | ||
5fb290d7 | 5424 | static void |
e142c38c | 5425 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 5426 | { |
e142c38c | 5427 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
5428 | } |
5429 | ||
ae2de4f8 DE |
5430 | /* Cleanup function for read_file_scope. */ |
5431 | ||
cb1df416 DJ |
5432 | static void |
5433 | free_cu_line_header (void *arg) | |
5434 | { | |
5435 | struct dwarf2_cu *cu = arg; | |
5436 | ||
5437 | free_line_header (cu->line_header); | |
5438 | cu->line_header = NULL; | |
5439 | } | |
5440 | ||
9291a0cd TT |
5441 | static void |
5442 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
5443 | char **name, char **comp_dir) | |
5444 | { | |
5445 | struct attribute *attr; | |
5446 | ||
5447 | *name = NULL; | |
5448 | *comp_dir = NULL; | |
5449 | ||
5450 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
5451 | is not a source language identifier. */ | |
5452 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
5453 | if (attr) | |
5454 | { | |
5455 | *name = DW_STRING (attr); | |
5456 | } | |
5457 | ||
5458 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
5459 | if (attr) | |
5460 | *comp_dir = DW_STRING (attr); | |
5461 | else if (*name != NULL && IS_ABSOLUTE_PATH (*name)) | |
5462 | { | |
5463 | *comp_dir = ldirname (*name); | |
5464 | if (*comp_dir != NULL) | |
5465 | make_cleanup (xfree, *comp_dir); | |
5466 | } | |
5467 | if (*comp_dir != NULL) | |
5468 | { | |
5469 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
5470 | directory, get rid of it. */ | |
5471 | char *cp = strchr (*comp_dir, ':'); | |
5472 | ||
5473 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
5474 | *comp_dir = cp + 1; | |
5475 | } | |
5476 | ||
5477 | if (*name == NULL) | |
5478 | *name = "<unknown>"; | |
5479 | } | |
5480 | ||
2ab95328 TT |
5481 | /* Handle DW_AT_stmt_list for a compilation unit. */ |
5482 | ||
5483 | static void | |
5484 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
5485 | const char *comp_dir) | |
5486 | { | |
5487 | struct attribute *attr; | |
5488 | struct objfile *objfile = cu->objfile; | |
5489 | bfd *abfd = objfile->obfd; | |
5490 | ||
5491 | /* Decode line number information if present. We do this before | |
5492 | processing child DIEs, so that the line header table is available | |
5493 | for DW_AT_decl_file. */ | |
5494 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); | |
5495 | if (attr) | |
5496 | { | |
5497 | unsigned int line_offset = DW_UNSND (attr); | |
5498 | struct line_header *line_header | |
5499 | = dwarf_decode_line_header (line_offset, abfd, cu); | |
5500 | ||
5501 | if (line_header) | |
5502 | { | |
5503 | cu->line_header = line_header; | |
5504 | make_cleanup (free_cu_line_header, cu); | |
5505 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); | |
5506 | } | |
5507 | } | |
5508 | } | |
5509 | ||
ae2de4f8 DE |
5510 | /* Process DW_TAG_compile_unit. */ |
5511 | ||
c906108c | 5512 | static void |
e7c27a73 | 5513 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5514 | { |
e7c27a73 | 5515 | struct objfile *objfile = cu->objfile; |
debd256d | 5516 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 5517 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
5518 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
5519 | struct attribute *attr; | |
e1024ff1 | 5520 | char *name = NULL; |
c906108c SS |
5521 | char *comp_dir = NULL; |
5522 | struct die_info *child_die; | |
5523 | bfd *abfd = objfile->obfd; | |
e142c38c | 5524 | CORE_ADDR baseaddr; |
6e70227d | 5525 | |
e142c38c | 5526 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 5527 | |
fae299cd | 5528 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
5529 | |
5530 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
5531 | from finish_block. */ | |
2acceee2 | 5532 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
5533 | lowpc = highpc; |
5534 | lowpc += baseaddr; | |
5535 | highpc += baseaddr; | |
5536 | ||
9291a0cd | 5537 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 5538 | |
e142c38c | 5539 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
5540 | if (attr) |
5541 | { | |
e142c38c | 5542 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
5543 | } |
5544 | ||
b0f35d58 | 5545 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
6e70227d | 5546 | if (attr) |
b0f35d58 | 5547 | cu->producer = DW_STRING (attr); |
303b6f5d | 5548 | |
f4b8a18d KW |
5549 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
5550 | standardised yet. As a workaround for the language detection we fall | |
5551 | back to the DW_AT_producer string. */ | |
5552 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
5553 | cu->language = language_opencl; | |
5554 | ||
0963b4bd | 5555 | /* We assume that we're processing GCC output. */ |
c906108c | 5556 | processing_gcc_compilation = 2; |
c906108c | 5557 | |
df8a16a1 DJ |
5558 | processing_has_namespace_info = 0; |
5559 | ||
c906108c SS |
5560 | start_symtab (name, comp_dir, lowpc); |
5561 | record_debugformat ("DWARF 2"); | |
303b6f5d | 5562 | record_producer (cu->producer); |
c906108c | 5563 | |
e142c38c | 5564 | initialize_cu_func_list (cu); |
c906108c | 5565 | |
2ab95328 | 5566 | handle_DW_AT_stmt_list (die, cu, comp_dir); |
debd256d | 5567 | |
cb1df416 DJ |
5568 | /* Process all dies in compilation unit. */ |
5569 | if (die->child != NULL) | |
5570 | { | |
5571 | child_die = die->child; | |
5572 | while (child_die && child_die->tag) | |
5573 | { | |
5574 | process_die (child_die, cu); | |
5575 | child_die = sibling_die (child_die); | |
5576 | } | |
5577 | } | |
5578 | ||
2e276125 JB |
5579 | /* Decode macro information, if present. Dwarf 2 macro information |
5580 | refers to information in the line number info statement program | |
5581 | header, so we can only read it if we've read the header | |
5582 | successfully. */ | |
e142c38c | 5583 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
2ab95328 | 5584 | if (attr && cu->line_header) |
2e276125 JB |
5585 | { |
5586 | unsigned int macro_offset = DW_UNSND (attr); | |
9a619af0 | 5587 | |
2ab95328 | 5588 | dwarf_decode_macros (cu->line_header, macro_offset, |
e7c27a73 | 5589 | comp_dir, abfd, cu); |
2e276125 | 5590 | } |
debd256d | 5591 | do_cleanups (back_to); |
5fb290d7 DJ |
5592 | } |
5593 | ||
ae2de4f8 DE |
5594 | /* Process DW_TAG_type_unit. |
5595 | For TUs we want to skip the first top level sibling if it's not the | |
348e048f DE |
5596 | actual type being defined by this TU. In this case the first top |
5597 | level sibling is there to provide context only. */ | |
5598 | ||
5599 | static void | |
5600 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
5601 | { | |
5602 | struct objfile *objfile = cu->objfile; | |
5603 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
5604 | CORE_ADDR lowpc; | |
5605 | struct attribute *attr; | |
5606 | char *name = NULL; | |
5607 | char *comp_dir = NULL; | |
5608 | struct die_info *child_die; | |
5609 | bfd *abfd = objfile->obfd; | |
348e048f DE |
5610 | |
5611 | /* start_symtab needs a low pc, but we don't really have one. | |
5612 | Do what read_file_scope would do in the absence of such info. */ | |
5613 | lowpc = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5614 | ||
5615 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
5616 | is not a source language identifier. */ | |
5617 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
5618 | if (attr) | |
5619 | name = DW_STRING (attr); | |
5620 | ||
5621 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
5622 | if (attr) | |
5623 | comp_dir = DW_STRING (attr); | |
5624 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
5625 | { | |
5626 | comp_dir = ldirname (name); | |
5627 | if (comp_dir != NULL) | |
5628 | make_cleanup (xfree, comp_dir); | |
5629 | } | |
5630 | ||
5631 | if (name == NULL) | |
5632 | name = "<unknown>"; | |
5633 | ||
5634 | attr = dwarf2_attr (die, DW_AT_language, cu); | |
5635 | if (attr) | |
5636 | set_cu_language (DW_UNSND (attr), cu); | |
5637 | ||
5638 | /* This isn't technically needed today. It is done for symmetry | |
5639 | with read_file_scope. */ | |
5640 | attr = dwarf2_attr (die, DW_AT_producer, cu); | |
6e70227d | 5641 | if (attr) |
348e048f DE |
5642 | cu->producer = DW_STRING (attr); |
5643 | ||
0963b4bd | 5644 | /* We assume that we're processing GCC output. */ |
348e048f DE |
5645 | processing_gcc_compilation = 2; |
5646 | ||
5647 | processing_has_namespace_info = 0; | |
5648 | ||
5649 | start_symtab (name, comp_dir, lowpc); | |
5650 | record_debugformat ("DWARF 2"); | |
5651 | record_producer (cu->producer); | |
5652 | ||
2ab95328 TT |
5653 | handle_DW_AT_stmt_list (die, cu, comp_dir); |
5654 | ||
348e048f DE |
5655 | /* Process the dies in the type unit. */ |
5656 | if (die->child == NULL) | |
5657 | { | |
5658 | dump_die_for_error (die); | |
5659 | error (_("Dwarf Error: Missing children for type unit [in module %s]"), | |
5660 | bfd_get_filename (abfd)); | |
5661 | } | |
5662 | ||
5663 | child_die = die->child; | |
5664 | ||
5665 | while (child_die && child_die->tag) | |
5666 | { | |
5667 | process_die (child_die, cu); | |
5668 | ||
5669 | child_die = sibling_die (child_die); | |
5670 | } | |
5671 | ||
5672 | do_cleanups (back_to); | |
5673 | } | |
5674 | ||
5fb290d7 | 5675 | static void |
e142c38c DJ |
5676 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
5677 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
5678 | { |
5679 | struct function_range *thisfn; | |
5680 | ||
5681 | thisfn = (struct function_range *) | |
7b5a2f43 | 5682 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
5683 | thisfn->name = name; |
5684 | thisfn->lowpc = lowpc; | |
5685 | thisfn->highpc = highpc; | |
5686 | thisfn->seen_line = 0; | |
5687 | thisfn->next = NULL; | |
5688 | ||
e142c38c DJ |
5689 | if (cu->last_fn == NULL) |
5690 | cu->first_fn = thisfn; | |
5fb290d7 | 5691 | else |
e142c38c | 5692 | cu->last_fn->next = thisfn; |
5fb290d7 | 5693 | |
e142c38c | 5694 | cu->last_fn = thisfn; |
c906108c SS |
5695 | } |
5696 | ||
d389af10 JK |
5697 | /* qsort helper for inherit_abstract_dies. */ |
5698 | ||
5699 | static int | |
5700 | unsigned_int_compar (const void *ap, const void *bp) | |
5701 | { | |
5702 | unsigned int a = *(unsigned int *) ap; | |
5703 | unsigned int b = *(unsigned int *) bp; | |
5704 | ||
5705 | return (a > b) - (b > a); | |
5706 | } | |
5707 | ||
5708 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
5709 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
5710 | already referenced by DW_AT_abstract_origin from the children of the | |
5711 | current DIE. */ | |
d389af10 JK |
5712 | |
5713 | static void | |
5714 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
5715 | { | |
5716 | struct die_info *child_die; | |
5717 | unsigned die_children_count; | |
5718 | /* CU offsets which were referenced by children of the current DIE. */ | |
5719 | unsigned *offsets; | |
5720 | unsigned *offsets_end, *offsetp; | |
5721 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ | |
5722 | struct die_info *origin_die; | |
5723 | /* Iterator of the ORIGIN_DIE children. */ | |
5724 | struct die_info *origin_child_die; | |
5725 | struct cleanup *cleanups; | |
5726 | struct attribute *attr; | |
cd02d79d PA |
5727 | struct dwarf2_cu *origin_cu; |
5728 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
5729 | |
5730 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
5731 | if (!attr) | |
5732 | return; | |
5733 | ||
cd02d79d PA |
5734 | /* Note that following die references may follow to a die in a |
5735 | different cu. */ | |
5736 | ||
5737 | origin_cu = cu; | |
5738 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
5739 | ||
5740 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
5741 | symbols in. */ | |
5742 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
5743 | origin_cu->list_in_scope = cu->list_in_scope; | |
5744 | ||
edb3359d DJ |
5745 | if (die->tag != origin_die->tag |
5746 | && !(die->tag == DW_TAG_inlined_subroutine | |
5747 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
5748 | complaint (&symfile_complaints, |
5749 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
5750 | die->offset, origin_die->offset); | |
5751 | ||
5752 | child_die = die->child; | |
5753 | die_children_count = 0; | |
5754 | while (child_die && child_die->tag) | |
5755 | { | |
5756 | child_die = sibling_die (child_die); | |
5757 | die_children_count++; | |
5758 | } | |
5759 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
5760 | cleanups = make_cleanup (xfree, offsets); | |
5761 | ||
5762 | offsets_end = offsets; | |
5763 | child_die = die->child; | |
5764 | while (child_die && child_die->tag) | |
5765 | { | |
c38f313d DJ |
5766 | /* For each CHILD_DIE, find the corresponding child of |
5767 | ORIGIN_DIE. If there is more than one layer of | |
5768 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
5769 | but GCC versions at least through 4.4 generate this (GCC PR | |
5770 | 40573). */ | |
5771 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 5772 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 5773 | |
c38f313d DJ |
5774 | while (1) |
5775 | { | |
cd02d79d PA |
5776 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
5777 | child_origin_cu); | |
c38f313d DJ |
5778 | if (attr == NULL) |
5779 | break; | |
cd02d79d PA |
5780 | child_origin_die = follow_die_ref (child_origin_die, attr, |
5781 | &child_origin_cu); | |
c38f313d DJ |
5782 | } |
5783 | ||
d389af10 JK |
5784 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
5785 | counterpart may exist. */ | |
c38f313d | 5786 | if (child_origin_die != child_die) |
d389af10 | 5787 | { |
edb3359d DJ |
5788 | if (child_die->tag != child_origin_die->tag |
5789 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
5790 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
5791 | complaint (&symfile_complaints, |
5792 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
5793 | "different tags"), child_die->offset, | |
5794 | child_origin_die->offset); | |
c38f313d DJ |
5795 | if (child_origin_die->parent != origin_die) |
5796 | complaint (&symfile_complaints, | |
5797 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
5798 | "different parents"), child_die->offset, | |
5799 | child_origin_die->offset); | |
5800 | else | |
5801 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
5802 | } |
5803 | child_die = sibling_die (child_die); | |
5804 | } | |
5805 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
5806 | unsigned_int_compar); | |
5807 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
5808 | if (offsetp[-1] == *offsetp) | |
3e43a32a MS |
5809 | complaint (&symfile_complaints, |
5810 | _("Multiple children of DIE 0x%x refer " | |
5811 | "to DIE 0x%x as their abstract origin"), | |
d389af10 JK |
5812 | die->offset, *offsetp); |
5813 | ||
5814 | offsetp = offsets; | |
5815 | origin_child_die = origin_die->child; | |
5816 | while (origin_child_die && origin_child_die->tag) | |
5817 | { | |
5818 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
5819 | while (offsetp < offsets_end && *offsetp < origin_child_die->offset) | |
5820 | offsetp++; | |
5821 | if (offsetp >= offsets_end || *offsetp > origin_child_die->offset) | |
5822 | { | |
5823 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 5824 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
5825 | } |
5826 | origin_child_die = sibling_die (origin_child_die); | |
5827 | } | |
cd02d79d | 5828 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
5829 | |
5830 | do_cleanups (cleanups); | |
5831 | } | |
5832 | ||
c906108c | 5833 | static void |
e7c27a73 | 5834 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5835 | { |
e7c27a73 | 5836 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 5837 | struct context_stack *new; |
c906108c SS |
5838 | CORE_ADDR lowpc; |
5839 | CORE_ADDR highpc; | |
5840 | struct die_info *child_die; | |
edb3359d | 5841 | struct attribute *attr, *call_line, *call_file; |
c906108c | 5842 | char *name; |
e142c38c | 5843 | CORE_ADDR baseaddr; |
801e3a5b | 5844 | struct block *block; |
edb3359d | 5845 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
5846 | VEC (symbolp) *template_args = NULL; |
5847 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
5848 | |
5849 | if (inlined_func) | |
5850 | { | |
5851 | /* If we do not have call site information, we can't show the | |
5852 | caller of this inlined function. That's too confusing, so | |
5853 | only use the scope for local variables. */ | |
5854 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
5855 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
5856 | if (call_line == NULL || call_file == NULL) | |
5857 | { | |
5858 | read_lexical_block_scope (die, cu); | |
5859 | return; | |
5860 | } | |
5861 | } | |
c906108c | 5862 | |
e142c38c DJ |
5863 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
5864 | ||
94af9270 | 5865 | name = dwarf2_name (die, cu); |
c906108c | 5866 | |
e8d05480 JB |
5867 | /* Ignore functions with missing or empty names. These are actually |
5868 | illegal according to the DWARF standard. */ | |
5869 | if (name == NULL) | |
5870 | { | |
5871 | complaint (&symfile_complaints, | |
5872 | _("missing name for subprogram DIE at %d"), die->offset); | |
5873 | return; | |
5874 | } | |
5875 | ||
5876 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
5877 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
5878 | { | |
ae4d0c03 PM |
5879 | attr = dwarf2_attr (die, DW_AT_external, cu); |
5880 | if (!attr || !DW_UNSND (attr)) | |
5881 | complaint (&symfile_complaints, | |
3e43a32a MS |
5882 | _("cannot get low and high bounds " |
5883 | "for subprogram DIE at %d"), | |
ae4d0c03 | 5884 | die->offset); |
e8d05480 JB |
5885 | return; |
5886 | } | |
c906108c SS |
5887 | |
5888 | lowpc += baseaddr; | |
5889 | highpc += baseaddr; | |
5890 | ||
5fb290d7 | 5891 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 5892 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 5893 | |
34eaf542 TT |
5894 | /* If we have any template arguments, then we must allocate a |
5895 | different sort of symbol. */ | |
5896 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
5897 | { | |
5898 | if (child_die->tag == DW_TAG_template_type_param | |
5899 | || child_die->tag == DW_TAG_template_value_param) | |
5900 | { | |
5901 | templ_func = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5902 | struct template_symbol); | |
5903 | templ_func->base.is_cplus_template_function = 1; | |
5904 | break; | |
5905 | } | |
5906 | } | |
5907 | ||
c906108c | 5908 | new = push_context (0, lowpc); |
34eaf542 TT |
5909 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
5910 | (struct symbol *) templ_func); | |
4c2df51b | 5911 | |
4cecd739 DJ |
5912 | /* If there is a location expression for DW_AT_frame_base, record |
5913 | it. */ | |
e142c38c | 5914 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 5915 | if (attr) |
c034e007 AC |
5916 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
5917 | expression is being recorded directly in the function's symbol | |
5918 | and not in a separate frame-base object. I guess this hack is | |
5919 | to avoid adding some sort of frame-base adjunct/annex to the | |
5920 | function's symbol :-(. The problem with doing this is that it | |
5921 | results in a function symbol with a location expression that | |
5922 | has nothing to do with the location of the function, ouch! The | |
5923 | relationship should be: a function's symbol has-a frame base; a | |
5924 | frame-base has-a location expression. */ | |
e7c27a73 | 5925 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 5926 | |
e142c38c | 5927 | cu->list_in_scope = &local_symbols; |
c906108c | 5928 | |
639d11d3 | 5929 | if (die->child != NULL) |
c906108c | 5930 | { |
639d11d3 | 5931 | child_die = die->child; |
c906108c SS |
5932 | while (child_die && child_die->tag) |
5933 | { | |
34eaf542 TT |
5934 | if (child_die->tag == DW_TAG_template_type_param |
5935 | || child_die->tag == DW_TAG_template_value_param) | |
5936 | { | |
5937 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
5938 | ||
f1078f66 DJ |
5939 | if (arg != NULL) |
5940 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
5941 | } |
5942 | else | |
5943 | process_die (child_die, cu); | |
c906108c SS |
5944 | child_die = sibling_die (child_die); |
5945 | } | |
5946 | } | |
5947 | ||
d389af10 JK |
5948 | inherit_abstract_dies (die, cu); |
5949 | ||
4a811a97 UW |
5950 | /* If we have a DW_AT_specification, we might need to import using |
5951 | directives from the context of the specification DIE. See the | |
5952 | comment in determine_prefix. */ | |
5953 | if (cu->language == language_cplus | |
5954 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
5955 | { | |
5956 | struct dwarf2_cu *spec_cu = cu; | |
5957 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
5958 | ||
5959 | while (spec_die) | |
5960 | { | |
5961 | child_die = spec_die->child; | |
5962 | while (child_die && child_die->tag) | |
5963 | { | |
5964 | if (child_die->tag == DW_TAG_imported_module) | |
5965 | process_die (child_die, spec_cu); | |
5966 | child_die = sibling_die (child_die); | |
5967 | } | |
5968 | ||
5969 | /* In some cases, GCC generates specification DIEs that | |
5970 | themselves contain DW_AT_specification attributes. */ | |
5971 | spec_die = die_specification (spec_die, &spec_cu); | |
5972 | } | |
5973 | } | |
5974 | ||
c906108c SS |
5975 | new = pop_context (); |
5976 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
5977 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
5978 | lowpc, highpc, objfile); | |
5979 | ||
df8a16a1 | 5980 | /* For C++, set the block's scope. */ |
f55ee35c | 5981 | if (cu->language == language_cplus || cu->language == language_fortran) |
df8a16a1 | 5982 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, |
0114d602 | 5983 | determine_prefix (die, cu), |
df8a16a1 DJ |
5984 | processing_has_namespace_info); |
5985 | ||
801e3a5b JB |
5986 | /* If we have address ranges, record them. */ |
5987 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 5988 | |
34eaf542 TT |
5989 | /* Attach template arguments to function. */ |
5990 | if (! VEC_empty (symbolp, template_args)) | |
5991 | { | |
5992 | gdb_assert (templ_func != NULL); | |
5993 | ||
5994 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
5995 | templ_func->template_arguments | |
5996 | = obstack_alloc (&objfile->objfile_obstack, | |
5997 | (templ_func->n_template_arguments | |
5998 | * sizeof (struct symbol *))); | |
5999 | memcpy (templ_func->template_arguments, | |
6000 | VEC_address (symbolp, template_args), | |
6001 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
6002 | VEC_free (symbolp, template_args); | |
6003 | } | |
6004 | ||
208d8187 JB |
6005 | /* In C++, we can have functions nested inside functions (e.g., when |
6006 | a function declares a class that has methods). This means that | |
6007 | when we finish processing a function scope, we may need to go | |
6008 | back to building a containing block's symbol lists. */ | |
6009 | local_symbols = new->locals; | |
6010 | param_symbols = new->params; | |
27aa8d6a | 6011 | using_directives = new->using_directives; |
208d8187 | 6012 | |
921e78cf JB |
6013 | /* If we've finished processing a top-level function, subsequent |
6014 | symbols go in the file symbol list. */ | |
6015 | if (outermost_context_p ()) | |
e142c38c | 6016 | cu->list_in_scope = &file_symbols; |
c906108c SS |
6017 | } |
6018 | ||
6019 | /* Process all the DIES contained within a lexical block scope. Start | |
6020 | a new scope, process the dies, and then close the scope. */ | |
6021 | ||
6022 | static void | |
e7c27a73 | 6023 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6024 | { |
e7c27a73 | 6025 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 6026 | struct context_stack *new; |
c906108c SS |
6027 | CORE_ADDR lowpc, highpc; |
6028 | struct die_info *child_die; | |
e142c38c DJ |
6029 | CORE_ADDR baseaddr; |
6030 | ||
6031 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
6032 | |
6033 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
6034 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
6035 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 6036 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 6037 | describe ranges. */ |
d85a05f0 | 6038 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
6039 | return; |
6040 | lowpc += baseaddr; | |
6041 | highpc += baseaddr; | |
6042 | ||
6043 | push_context (0, lowpc); | |
639d11d3 | 6044 | if (die->child != NULL) |
c906108c | 6045 | { |
639d11d3 | 6046 | child_die = die->child; |
c906108c SS |
6047 | while (child_die && child_die->tag) |
6048 | { | |
e7c27a73 | 6049 | process_die (child_die, cu); |
c906108c SS |
6050 | child_die = sibling_die (child_die); |
6051 | } | |
6052 | } | |
6053 | new = pop_context (); | |
6054 | ||
8540c487 | 6055 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 6056 | { |
801e3a5b JB |
6057 | struct block *block |
6058 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
6059 | highpc, objfile); | |
6060 | ||
6061 | /* Note that recording ranges after traversing children, as we | |
6062 | do here, means that recording a parent's ranges entails | |
6063 | walking across all its children's ranges as they appear in | |
6064 | the address map, which is quadratic behavior. | |
6065 | ||
6066 | It would be nicer to record the parent's ranges before | |
6067 | traversing its children, simply overriding whatever you find | |
6068 | there. But since we don't even decide whether to create a | |
6069 | block until after we've traversed its children, that's hard | |
6070 | to do. */ | |
6071 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
6072 | } |
6073 | local_symbols = new->locals; | |
27aa8d6a | 6074 | using_directives = new->using_directives; |
c906108c SS |
6075 | } |
6076 | ||
43039443 | 6077 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
6078 | Return 1 if the attributes are present and valid, otherwise, return 0. |
6079 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
6080 | |
6081 | static int | |
6082 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
6083 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
6084 | struct partial_symtab *ranges_pst) | |
43039443 JK |
6085 | { |
6086 | struct objfile *objfile = cu->objfile; | |
6087 | struct comp_unit_head *cu_header = &cu->header; | |
6088 | bfd *obfd = objfile->obfd; | |
6089 | unsigned int addr_size = cu_header->addr_size; | |
6090 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
6091 | /* Base address selection entry. */ | |
6092 | CORE_ADDR base; | |
6093 | int found_base; | |
6094 | unsigned int dummy; | |
6095 | gdb_byte *buffer; | |
6096 | CORE_ADDR marker; | |
6097 | int low_set; | |
6098 | CORE_ADDR low = 0; | |
6099 | CORE_ADDR high = 0; | |
ff013f42 | 6100 | CORE_ADDR baseaddr; |
43039443 | 6101 | |
d00adf39 DE |
6102 | found_base = cu->base_known; |
6103 | base = cu->base_address; | |
43039443 | 6104 | |
be391dca | 6105 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 6106 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
6107 | { |
6108 | complaint (&symfile_complaints, | |
6109 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
6110 | offset); | |
6111 | return 0; | |
6112 | } | |
dce234bc | 6113 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
6114 | |
6115 | /* Read in the largest possible address. */ | |
6116 | marker = read_address (obfd, buffer, cu, &dummy); | |
6117 | if ((marker & mask) == mask) | |
6118 | { | |
6119 | /* If we found the largest possible address, then | |
6120 | read the base address. */ | |
6121 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
6122 | buffer += 2 * addr_size; | |
6123 | offset += 2 * addr_size; | |
6124 | found_base = 1; | |
6125 | } | |
6126 | ||
6127 | low_set = 0; | |
6128 | ||
e7030f15 | 6129 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 6130 | |
43039443 JK |
6131 | while (1) |
6132 | { | |
6133 | CORE_ADDR range_beginning, range_end; | |
6134 | ||
6135 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
6136 | buffer += addr_size; | |
6137 | range_end = read_address (obfd, buffer, cu, &dummy); | |
6138 | buffer += addr_size; | |
6139 | offset += 2 * addr_size; | |
6140 | ||
6141 | /* An end of list marker is a pair of zero addresses. */ | |
6142 | if (range_beginning == 0 && range_end == 0) | |
6143 | /* Found the end of list entry. */ | |
6144 | break; | |
6145 | ||
6146 | /* Each base address selection entry is a pair of 2 values. | |
6147 | The first is the largest possible address, the second is | |
6148 | the base address. Check for a base address here. */ | |
6149 | if ((range_beginning & mask) == mask) | |
6150 | { | |
6151 | /* If we found the largest possible address, then | |
6152 | read the base address. */ | |
6153 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
6154 | found_base = 1; | |
6155 | continue; | |
6156 | } | |
6157 | ||
6158 | if (!found_base) | |
6159 | { | |
6160 | /* We have no valid base address for the ranges | |
6161 | data. */ | |
6162 | complaint (&symfile_complaints, | |
6163 | _("Invalid .debug_ranges data (no base address)")); | |
6164 | return 0; | |
6165 | } | |
6166 | ||
9277c30c UW |
6167 | if (range_beginning > range_end) |
6168 | { | |
6169 | /* Inverted range entries are invalid. */ | |
6170 | complaint (&symfile_complaints, | |
6171 | _("Invalid .debug_ranges data (inverted range)")); | |
6172 | return 0; | |
6173 | } | |
6174 | ||
6175 | /* Empty range entries have no effect. */ | |
6176 | if (range_beginning == range_end) | |
6177 | continue; | |
6178 | ||
43039443 JK |
6179 | range_beginning += base; |
6180 | range_end += base; | |
6181 | ||
9277c30c | 6182 | if (ranges_pst != NULL) |
ff013f42 | 6183 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
6184 | range_beginning + baseaddr, |
6185 | range_end - 1 + baseaddr, | |
ff013f42 JK |
6186 | ranges_pst); |
6187 | ||
43039443 JK |
6188 | /* FIXME: This is recording everything as a low-high |
6189 | segment of consecutive addresses. We should have a | |
6190 | data structure for discontiguous block ranges | |
6191 | instead. */ | |
6192 | if (! low_set) | |
6193 | { | |
6194 | low = range_beginning; | |
6195 | high = range_end; | |
6196 | low_set = 1; | |
6197 | } | |
6198 | else | |
6199 | { | |
6200 | if (range_beginning < low) | |
6201 | low = range_beginning; | |
6202 | if (range_end > high) | |
6203 | high = range_end; | |
6204 | } | |
6205 | } | |
6206 | ||
6207 | if (! low_set) | |
6208 | /* If the first entry is an end-of-list marker, the range | |
6209 | describes an empty scope, i.e. no instructions. */ | |
6210 | return 0; | |
6211 | ||
6212 | if (low_return) | |
6213 | *low_return = low; | |
6214 | if (high_return) | |
6215 | *high_return = high; | |
6216 | return 1; | |
6217 | } | |
6218 | ||
af34e669 DJ |
6219 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
6220 | are present and valid, otherwise, return 0. Return -1 if the range is | |
6221 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 6222 | static int |
af34e669 | 6223 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
6224 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
6225 | struct partial_symtab *pst) | |
c906108c SS |
6226 | { |
6227 | struct attribute *attr; | |
af34e669 DJ |
6228 | CORE_ADDR low = 0; |
6229 | CORE_ADDR high = 0; | |
6230 | int ret = 0; | |
c906108c | 6231 | |
e142c38c | 6232 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 6233 | if (attr) |
af34e669 DJ |
6234 | { |
6235 | high = DW_ADDR (attr); | |
e142c38c | 6236 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
6237 | if (attr) |
6238 | low = DW_ADDR (attr); | |
6239 | else | |
6240 | /* Found high w/o low attribute. */ | |
6241 | return 0; | |
6242 | ||
6243 | /* Found consecutive range of addresses. */ | |
6244 | ret = 1; | |
6245 | } | |
c906108c | 6246 | else |
af34e669 | 6247 | { |
e142c38c | 6248 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
6249 | if (attr != NULL) |
6250 | { | |
af34e669 | 6251 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 6252 | .debug_ranges section. */ |
d85a05f0 | 6253 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, pst)) |
af34e669 | 6254 | return 0; |
43039443 | 6255 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
6256 | ret = -1; |
6257 | } | |
6258 | } | |
c906108c | 6259 | |
9373cf26 JK |
6260 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
6261 | if (high <= low) | |
c906108c SS |
6262 | return 0; |
6263 | ||
6264 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
6265 | eliminate duplicate copies of functions and vtables and such. | |
6266 | The linker will arbitrarily choose one and discard the others. | |
6267 | The AT_*_pc values for such functions refer to local labels in | |
6268 | these sections. If the section from that file was discarded, the | |
6269 | labels are not in the output, so the relocs get a value of 0. | |
6270 | If this is a discarded function, mark the pc bounds as invalid, | |
6271 | so that GDB will ignore it. */ | |
72dca2f5 | 6272 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
6273 | return 0; |
6274 | ||
6275 | *lowpc = low; | |
6276 | *highpc = high; | |
af34e669 | 6277 | return ret; |
c906108c SS |
6278 | } |
6279 | ||
b084d499 JB |
6280 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
6281 | its low and high PC addresses. Do nothing if these addresses could not | |
6282 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
6283 | and HIGHPC to the high address if greater than HIGHPC. */ | |
6284 | ||
6285 | static void | |
6286 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
6287 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
6288 | struct dwarf2_cu *cu) | |
6289 | { | |
6290 | CORE_ADDR low, high; | |
6291 | struct die_info *child = die->child; | |
6292 | ||
d85a05f0 | 6293 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
6294 | { |
6295 | *lowpc = min (*lowpc, low); | |
6296 | *highpc = max (*highpc, high); | |
6297 | } | |
6298 | ||
6299 | /* If the language does not allow nested subprograms (either inside | |
6300 | subprograms or lexical blocks), we're done. */ | |
6301 | if (cu->language != language_ada) | |
6302 | return; | |
6e70227d | 6303 | |
b084d499 JB |
6304 | /* Check all the children of the given DIE. If it contains nested |
6305 | subprograms, then check their pc bounds. Likewise, we need to | |
6306 | check lexical blocks as well, as they may also contain subprogram | |
6307 | definitions. */ | |
6308 | while (child && child->tag) | |
6309 | { | |
6310 | if (child->tag == DW_TAG_subprogram | |
6311 | || child->tag == DW_TAG_lexical_block) | |
6312 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
6313 | child = sibling_die (child); | |
6314 | } | |
6315 | } | |
6316 | ||
fae299cd DC |
6317 | /* Get the low and high pc's represented by the scope DIE, and store |
6318 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
6319 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
6320 | ||
6321 | static void | |
6322 | get_scope_pc_bounds (struct die_info *die, | |
6323 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
6324 | struct dwarf2_cu *cu) | |
6325 | { | |
6326 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
6327 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
6328 | CORE_ADDR current_low, current_high; | |
6329 | ||
d85a05f0 | 6330 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
6331 | { |
6332 | best_low = current_low; | |
6333 | best_high = current_high; | |
6334 | } | |
6335 | else | |
6336 | { | |
6337 | struct die_info *child = die->child; | |
6338 | ||
6339 | while (child && child->tag) | |
6340 | { | |
6341 | switch (child->tag) { | |
6342 | case DW_TAG_subprogram: | |
b084d499 | 6343 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
6344 | break; |
6345 | case DW_TAG_namespace: | |
f55ee35c | 6346 | case DW_TAG_module: |
fae299cd DC |
6347 | /* FIXME: carlton/2004-01-16: Should we do this for |
6348 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
6349 | that current GCC's always emit the DIEs corresponding | |
6350 | to definitions of methods of classes as children of a | |
6351 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
6352 | the DIEs giving the declarations, which could be | |
6353 | anywhere). But I don't see any reason why the | |
6354 | standards says that they have to be there. */ | |
6355 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
6356 | ||
6357 | if (current_low != ((CORE_ADDR) -1)) | |
6358 | { | |
6359 | best_low = min (best_low, current_low); | |
6360 | best_high = max (best_high, current_high); | |
6361 | } | |
6362 | break; | |
6363 | default: | |
0963b4bd | 6364 | /* Ignore. */ |
fae299cd DC |
6365 | break; |
6366 | } | |
6367 | ||
6368 | child = sibling_die (child); | |
6369 | } | |
6370 | } | |
6371 | ||
6372 | *lowpc = best_low; | |
6373 | *highpc = best_high; | |
6374 | } | |
6375 | ||
801e3a5b JB |
6376 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
6377 | in DIE. */ | |
6378 | static void | |
6379 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
6380 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
6381 | { | |
6382 | struct attribute *attr; | |
6383 | ||
6384 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); | |
6385 | if (attr) | |
6386 | { | |
6387 | CORE_ADDR high = DW_ADDR (attr); | |
9a619af0 | 6388 | |
801e3a5b JB |
6389 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
6390 | if (attr) | |
6391 | { | |
6392 | CORE_ADDR low = DW_ADDR (attr); | |
9a619af0 | 6393 | |
801e3a5b JB |
6394 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
6395 | } | |
6396 | } | |
6397 | ||
6398 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
6399 | if (attr) | |
6400 | { | |
6401 | bfd *obfd = cu->objfile->obfd; | |
6402 | ||
6403 | /* The value of the DW_AT_ranges attribute is the offset of the | |
6404 | address range list in the .debug_ranges section. */ | |
6405 | unsigned long offset = DW_UNSND (attr); | |
dce234bc | 6406 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
6407 | |
6408 | /* For some target architectures, but not others, the | |
6409 | read_address function sign-extends the addresses it returns. | |
6410 | To recognize base address selection entries, we need a | |
6411 | mask. */ | |
6412 | unsigned int addr_size = cu->header.addr_size; | |
6413 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
6414 | ||
6415 | /* The base address, to which the next pair is relative. Note | |
6416 | that this 'base' is a DWARF concept: most entries in a range | |
6417 | list are relative, to reduce the number of relocs against the | |
6418 | debugging information. This is separate from this function's | |
6419 | 'baseaddr' argument, which GDB uses to relocate debugging | |
6420 | information from a shared library based on the address at | |
6421 | which the library was loaded. */ | |
d00adf39 DE |
6422 | CORE_ADDR base = cu->base_address; |
6423 | int base_known = cu->base_known; | |
801e3a5b | 6424 | |
be391dca | 6425 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 6426 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
6427 | { |
6428 | complaint (&symfile_complaints, | |
6429 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
6430 | offset); | |
6431 | return; | |
6432 | } | |
6433 | ||
6434 | for (;;) | |
6435 | { | |
6436 | unsigned int bytes_read; | |
6437 | CORE_ADDR start, end; | |
6438 | ||
6439 | start = read_address (obfd, buffer, cu, &bytes_read); | |
6440 | buffer += bytes_read; | |
6441 | end = read_address (obfd, buffer, cu, &bytes_read); | |
6442 | buffer += bytes_read; | |
6443 | ||
6444 | /* Did we find the end of the range list? */ | |
6445 | if (start == 0 && end == 0) | |
6446 | break; | |
6447 | ||
6448 | /* Did we find a base address selection entry? */ | |
6449 | else if ((start & base_select_mask) == base_select_mask) | |
6450 | { | |
6451 | base = end; | |
6452 | base_known = 1; | |
6453 | } | |
6454 | ||
6455 | /* We found an ordinary address range. */ | |
6456 | else | |
6457 | { | |
6458 | if (!base_known) | |
6459 | { | |
6460 | complaint (&symfile_complaints, | |
3e43a32a MS |
6461 | _("Invalid .debug_ranges data " |
6462 | "(no base address)")); | |
801e3a5b JB |
6463 | return; |
6464 | } | |
6465 | ||
9277c30c UW |
6466 | if (start > end) |
6467 | { | |
6468 | /* Inverted range entries are invalid. */ | |
6469 | complaint (&symfile_complaints, | |
6470 | _("Invalid .debug_ranges data " | |
6471 | "(inverted range)")); | |
6472 | return; | |
6473 | } | |
6474 | ||
6475 | /* Empty range entries have no effect. */ | |
6476 | if (start == end) | |
6477 | continue; | |
6478 | ||
6e70227d DE |
6479 | record_block_range (block, |
6480 | baseaddr + base + start, | |
801e3a5b JB |
6481 | baseaddr + base + end - 1); |
6482 | } | |
6483 | } | |
6484 | } | |
6485 | } | |
6486 | ||
60d5a603 JK |
6487 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
6488 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
6489 | during 4.6.0 experimental. */ | |
6490 | ||
6491 | static int | |
6492 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
6493 | { | |
6494 | const char *cs; | |
6495 | int major, minor, release; | |
6496 | ||
6497 | if (cu->producer == NULL) | |
6498 | { | |
6499 | /* For unknown compilers expect their behavior is DWARF version | |
6500 | compliant. | |
6501 | ||
6502 | GCC started to support .debug_types sections by -gdwarf-4 since | |
6503 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
6504 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
6505 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
6506 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
6507 | ||
6508 | return 0; | |
6509 | } | |
6510 | ||
6511 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ | |
6512 | ||
6513 | if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) != 0) | |
6514 | { | |
6515 | /* For non-GCC compilers expect their behavior is DWARF version | |
6516 | compliant. */ | |
6517 | ||
6518 | return 0; | |
6519 | } | |
6520 | cs = &cu->producer[strlen ("GNU ")]; | |
6521 | while (*cs && !isdigit (*cs)) | |
6522 | cs++; | |
6523 | if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3) | |
6524 | { | |
6525 | /* Not recognized as GCC. */ | |
6526 | ||
6527 | return 0; | |
6528 | } | |
6529 | ||
6530 | return major < 4 || (major == 4 && minor < 6); | |
6531 | } | |
6532 | ||
6533 | /* Return the default accessibility type if it is not overriden by | |
6534 | DW_AT_accessibility. */ | |
6535 | ||
6536 | static enum dwarf_access_attribute | |
6537 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
6538 | { | |
6539 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
6540 | { | |
6541 | /* The default DWARF 2 accessibility for members is public, the default | |
6542 | accessibility for inheritance is private. */ | |
6543 | ||
6544 | if (die->tag != DW_TAG_inheritance) | |
6545 | return DW_ACCESS_public; | |
6546 | else | |
6547 | return DW_ACCESS_private; | |
6548 | } | |
6549 | else | |
6550 | { | |
6551 | /* DWARF 3+ defines the default accessibility a different way. The same | |
6552 | rules apply now for DW_TAG_inheritance as for the members and it only | |
6553 | depends on the container kind. */ | |
6554 | ||
6555 | if (die->parent->tag == DW_TAG_class_type) | |
6556 | return DW_ACCESS_private; | |
6557 | else | |
6558 | return DW_ACCESS_public; | |
6559 | } | |
6560 | } | |
6561 | ||
74ac6d43 TT |
6562 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
6563 | offset. If the attribute was not found return 0, otherwise return | |
6564 | 1. If it was found but could not properly be handled, set *OFFSET | |
6565 | to 0. */ | |
6566 | ||
6567 | static int | |
6568 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
6569 | LONGEST *offset) | |
6570 | { | |
6571 | struct attribute *attr; | |
6572 | ||
6573 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
6574 | if (attr != NULL) | |
6575 | { | |
6576 | *offset = 0; | |
6577 | ||
6578 | /* Note that we do not check for a section offset first here. | |
6579 | This is because DW_AT_data_member_location is new in DWARF 4, | |
6580 | so if we see it, we can assume that a constant form is really | |
6581 | a constant and not a section offset. */ | |
6582 | if (attr_form_is_constant (attr)) | |
6583 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
6584 | else if (attr_form_is_section_offset (attr)) | |
6585 | dwarf2_complex_location_expr_complaint (); | |
6586 | else if (attr_form_is_block (attr)) | |
6587 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
6588 | else | |
6589 | dwarf2_complex_location_expr_complaint (); | |
6590 | ||
6591 | return 1; | |
6592 | } | |
6593 | ||
6594 | return 0; | |
6595 | } | |
6596 | ||
c906108c SS |
6597 | /* Add an aggregate field to the field list. */ |
6598 | ||
6599 | static void | |
107d2387 | 6600 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 6601 | struct dwarf2_cu *cu) |
6e70227d | 6602 | { |
e7c27a73 | 6603 | struct objfile *objfile = cu->objfile; |
5e2b427d | 6604 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
6605 | struct nextfield *new_field; |
6606 | struct attribute *attr; | |
6607 | struct field *fp; | |
6608 | char *fieldname = ""; | |
6609 | ||
6610 | /* Allocate a new field list entry and link it in. */ | |
6611 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 6612 | make_cleanup (xfree, new_field); |
c906108c | 6613 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
6614 | |
6615 | if (die->tag == DW_TAG_inheritance) | |
6616 | { | |
6617 | new_field->next = fip->baseclasses; | |
6618 | fip->baseclasses = new_field; | |
6619 | } | |
6620 | else | |
6621 | { | |
6622 | new_field->next = fip->fields; | |
6623 | fip->fields = new_field; | |
6624 | } | |
c906108c SS |
6625 | fip->nfields++; |
6626 | ||
e142c38c | 6627 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
6628 | if (attr) |
6629 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
6630 | else |
6631 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
6632 | if (new_field->accessibility != DW_ACCESS_public) |
6633 | fip->non_public_fields = 1; | |
60d5a603 | 6634 | |
e142c38c | 6635 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
6636 | if (attr) |
6637 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
6638 | else |
6639 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
6640 | |
6641 | fp = &new_field->field; | |
a9a9bd0f | 6642 | |
e142c38c | 6643 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 6644 | { |
74ac6d43 TT |
6645 | LONGEST offset; |
6646 | ||
a9a9bd0f | 6647 | /* Data member other than a C++ static data member. */ |
6e70227d | 6648 | |
c906108c | 6649 | /* Get type of field. */ |
e7c27a73 | 6650 | fp->type = die_type (die, cu); |
c906108c | 6651 | |
d6a843b5 | 6652 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 6653 | |
c906108c | 6654 | /* Get bit size of field (zero if none). */ |
e142c38c | 6655 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
6656 | if (attr) |
6657 | { | |
6658 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
6659 | } | |
6660 | else | |
6661 | { | |
6662 | FIELD_BITSIZE (*fp) = 0; | |
6663 | } | |
6664 | ||
6665 | /* Get bit offset of field. */ | |
74ac6d43 TT |
6666 | if (handle_data_member_location (die, cu, &offset)) |
6667 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 6668 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
6669 | if (attr) |
6670 | { | |
5e2b427d | 6671 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
6672 | { |
6673 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
6674 | additional bit offset from the MSB of the containing |
6675 | anonymous object to the MSB of the field. We don't | |
6676 | have to do anything special since we don't need to | |
6677 | know the size of the anonymous object. */ | |
c906108c SS |
6678 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
6679 | } | |
6680 | else | |
6681 | { | |
6682 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
6683 | MSB of the anonymous object, subtract off the number of |
6684 | bits from the MSB of the field to the MSB of the | |
6685 | object, and then subtract off the number of bits of | |
6686 | the field itself. The result is the bit offset of | |
6687 | the LSB of the field. */ | |
c906108c SS |
6688 | int anonymous_size; |
6689 | int bit_offset = DW_UNSND (attr); | |
6690 | ||
e142c38c | 6691 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
6692 | if (attr) |
6693 | { | |
6694 | /* The size of the anonymous object containing | |
6695 | the bit field is explicit, so use the | |
6696 | indicated size (in bytes). */ | |
6697 | anonymous_size = DW_UNSND (attr); | |
6698 | } | |
6699 | else | |
6700 | { | |
6701 | /* The size of the anonymous object containing | |
6702 | the bit field must be inferred from the type | |
6703 | attribute of the data member containing the | |
6704 | bit field. */ | |
6705 | anonymous_size = TYPE_LENGTH (fp->type); | |
6706 | } | |
6707 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
6708 | - bit_offset - FIELD_BITSIZE (*fp); | |
6709 | } | |
6710 | } | |
6711 | ||
6712 | /* Get name of field. */ | |
39cbfefa DJ |
6713 | fieldname = dwarf2_name (die, cu); |
6714 | if (fieldname == NULL) | |
6715 | fieldname = ""; | |
d8151005 DJ |
6716 | |
6717 | /* The name is already allocated along with this objfile, so we don't | |
6718 | need to duplicate it for the type. */ | |
6719 | fp->name = fieldname; | |
c906108c SS |
6720 | |
6721 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 6722 | pointer or virtual base class pointer) to private. */ |
e142c38c | 6723 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 6724 | { |
d48cc9dd | 6725 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
6726 | new_field->accessibility = DW_ACCESS_private; |
6727 | fip->non_public_fields = 1; | |
6728 | } | |
6729 | } | |
a9a9bd0f | 6730 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 6731 | { |
a9a9bd0f DC |
6732 | /* C++ static member. */ |
6733 | ||
6734 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
6735 | is a declaration, but all versions of G++ as of this writing | |
6736 | (so through at least 3.2.1) incorrectly generate | |
6737 | DW_TAG_variable tags. */ | |
6e70227d | 6738 | |
ff355380 | 6739 | const char *physname; |
c906108c | 6740 | |
a9a9bd0f | 6741 | /* Get name of field. */ |
39cbfefa DJ |
6742 | fieldname = dwarf2_name (die, cu); |
6743 | if (fieldname == NULL) | |
c906108c SS |
6744 | return; |
6745 | ||
254e6b9e | 6746 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
6747 | if (attr |
6748 | /* Only create a symbol if this is an external value. | |
6749 | new_symbol checks this and puts the value in the global symbol | |
6750 | table, which we want. If it is not external, new_symbol | |
6751 | will try to put the value in cu->list_in_scope which is wrong. */ | |
6752 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
6753 | { |
6754 | /* A static const member, not much different than an enum as far as | |
6755 | we're concerned, except that we can support more types. */ | |
6756 | new_symbol (die, NULL, cu); | |
6757 | } | |
6758 | ||
2df3850c | 6759 | /* Get physical name. */ |
ff355380 | 6760 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 6761 | |
d8151005 DJ |
6762 | /* The name is already allocated along with this objfile, so we don't |
6763 | need to duplicate it for the type. */ | |
6764 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 6765 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 6766 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
6767 | } |
6768 | else if (die->tag == DW_TAG_inheritance) | |
6769 | { | |
74ac6d43 | 6770 | LONGEST offset; |
d4b96c9a | 6771 | |
74ac6d43 TT |
6772 | /* C++ base class field. */ |
6773 | if (handle_data_member_location (die, cu, &offset)) | |
6774 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 6775 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 6776 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
6777 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
6778 | fip->nbaseclasses++; | |
6779 | } | |
6780 | } | |
6781 | ||
98751a41 JK |
6782 | /* Add a typedef defined in the scope of the FIP's class. */ |
6783 | ||
6784 | static void | |
6785 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
6786 | struct dwarf2_cu *cu) | |
6e70227d | 6787 | { |
98751a41 | 6788 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
6789 | struct typedef_field_list *new_field; |
6790 | struct attribute *attr; | |
6791 | struct typedef_field *fp; | |
6792 | char *fieldname = ""; | |
6793 | ||
6794 | /* Allocate a new field list entry and link it in. */ | |
6795 | new_field = xzalloc (sizeof (*new_field)); | |
6796 | make_cleanup (xfree, new_field); | |
6797 | ||
6798 | gdb_assert (die->tag == DW_TAG_typedef); | |
6799 | ||
6800 | fp = &new_field->field; | |
6801 | ||
6802 | /* Get name of field. */ | |
6803 | fp->name = dwarf2_name (die, cu); | |
6804 | if (fp->name == NULL) | |
6805 | return; | |
6806 | ||
6807 | fp->type = read_type_die (die, cu); | |
6808 | ||
6809 | new_field->next = fip->typedef_field_list; | |
6810 | fip->typedef_field_list = new_field; | |
6811 | fip->typedef_field_list_count++; | |
6812 | } | |
6813 | ||
c906108c SS |
6814 | /* Create the vector of fields, and attach it to the type. */ |
6815 | ||
6816 | static void | |
fba45db2 | 6817 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 6818 | struct dwarf2_cu *cu) |
c906108c SS |
6819 | { |
6820 | int nfields = fip->nfields; | |
6821 | ||
6822 | /* Record the field count, allocate space for the array of fields, | |
6823 | and create blank accessibility bitfields if necessary. */ | |
6824 | TYPE_NFIELDS (type) = nfields; | |
6825 | TYPE_FIELDS (type) = (struct field *) | |
6826 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
6827 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
6828 | ||
b4ba55a1 | 6829 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
6830 | { |
6831 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
6832 | ||
6833 | TYPE_FIELD_PRIVATE_BITS (type) = | |
6834 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6835 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
6836 | ||
6837 | TYPE_FIELD_PROTECTED_BITS (type) = | |
6838 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6839 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
6840 | ||
774b6a14 TT |
6841 | TYPE_FIELD_IGNORE_BITS (type) = |
6842 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6843 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
6844 | } |
6845 | ||
6846 | /* If the type has baseclasses, allocate and clear a bit vector for | |
6847 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 6848 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
6849 | { |
6850 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 6851 | unsigned char *pointer; |
c906108c SS |
6852 | |
6853 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
6854 | pointer = TYPE_ALLOC (type, num_bytes); |
6855 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
6856 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
6857 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
6858 | } | |
6859 | ||
3e43a32a MS |
6860 | /* Copy the saved-up fields into the field vector. Start from the head of |
6861 | the list, adding to the tail of the field array, so that they end up in | |
6862 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
6863 | while (nfields-- > 0) |
6864 | { | |
7d0ccb61 DJ |
6865 | struct nextfield *fieldp; |
6866 | ||
6867 | if (fip->fields) | |
6868 | { | |
6869 | fieldp = fip->fields; | |
6870 | fip->fields = fieldp->next; | |
6871 | } | |
6872 | else | |
6873 | { | |
6874 | fieldp = fip->baseclasses; | |
6875 | fip->baseclasses = fieldp->next; | |
6876 | } | |
6877 | ||
6878 | TYPE_FIELD (type, nfields) = fieldp->field; | |
6879 | switch (fieldp->accessibility) | |
c906108c | 6880 | { |
c5aa993b | 6881 | case DW_ACCESS_private: |
b4ba55a1 JB |
6882 | if (cu->language != language_ada) |
6883 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 6884 | break; |
c906108c | 6885 | |
c5aa993b | 6886 | case DW_ACCESS_protected: |
b4ba55a1 JB |
6887 | if (cu->language != language_ada) |
6888 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 6889 | break; |
c906108c | 6890 | |
c5aa993b JM |
6891 | case DW_ACCESS_public: |
6892 | break; | |
c906108c | 6893 | |
c5aa993b JM |
6894 | default: |
6895 | /* Unknown accessibility. Complain and treat it as public. */ | |
6896 | { | |
e2e0b3e5 | 6897 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 6898 | fieldp->accessibility); |
c5aa993b JM |
6899 | } |
6900 | break; | |
c906108c SS |
6901 | } |
6902 | if (nfields < fip->nbaseclasses) | |
6903 | { | |
7d0ccb61 | 6904 | switch (fieldp->virtuality) |
c906108c | 6905 | { |
c5aa993b JM |
6906 | case DW_VIRTUALITY_virtual: |
6907 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 6908 | if (cu->language == language_ada) |
a73c6dcd | 6909 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
6910 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
6911 | break; | |
c906108c SS |
6912 | } |
6913 | } | |
c906108c SS |
6914 | } |
6915 | } | |
6916 | ||
c906108c SS |
6917 | /* Add a member function to the proper fieldlist. */ |
6918 | ||
6919 | static void | |
107d2387 | 6920 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 6921 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 6922 | { |
e7c27a73 | 6923 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6924 | struct attribute *attr; |
6925 | struct fnfieldlist *flp; | |
6926 | int i; | |
6927 | struct fn_field *fnp; | |
6928 | char *fieldname; | |
c906108c | 6929 | struct nextfnfield *new_fnfield; |
f792889a | 6930 | struct type *this_type; |
60d5a603 | 6931 | enum dwarf_access_attribute accessibility; |
c906108c | 6932 | |
b4ba55a1 | 6933 | if (cu->language == language_ada) |
a73c6dcd | 6934 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 6935 | |
2df3850c | 6936 | /* Get name of member function. */ |
39cbfefa DJ |
6937 | fieldname = dwarf2_name (die, cu); |
6938 | if (fieldname == NULL) | |
2df3850c | 6939 | return; |
c906108c | 6940 | |
c906108c SS |
6941 | /* Look up member function name in fieldlist. */ |
6942 | for (i = 0; i < fip->nfnfields; i++) | |
6943 | { | |
27bfe10e | 6944 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
6945 | break; |
6946 | } | |
6947 | ||
6948 | /* Create new list element if necessary. */ | |
6949 | if (i < fip->nfnfields) | |
6950 | flp = &fip->fnfieldlists[i]; | |
6951 | else | |
6952 | { | |
6953 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
6954 | { | |
6955 | fip->fnfieldlists = (struct fnfieldlist *) | |
6956 | xrealloc (fip->fnfieldlists, | |
6957 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 6958 | * sizeof (struct fnfieldlist)); |
c906108c | 6959 | if (fip->nfnfields == 0) |
c13c43fd | 6960 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
6961 | } |
6962 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
6963 | flp->name = fieldname; | |
6964 | flp->length = 0; | |
6965 | flp->head = NULL; | |
3da10d80 | 6966 | i = fip->nfnfields++; |
c906108c SS |
6967 | } |
6968 | ||
6969 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 6970 | entry. */ |
c906108c | 6971 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 6972 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
6973 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
6974 | new_fnfield->next = flp->head; | |
6975 | flp->head = new_fnfield; | |
6976 | flp->length++; | |
6977 | ||
6978 | /* Fill in the member function field info. */ | |
6979 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
6980 | |
6981 | /* Delay processing of the physname until later. */ | |
6982 | if (cu->language == language_cplus || cu->language == language_java) | |
6983 | { | |
6984 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
6985 | die, cu); | |
6986 | } | |
6987 | else | |
6988 | { | |
1d06ead6 | 6989 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
6990 | fnp->physname = physname ? physname : ""; |
6991 | } | |
6992 | ||
c906108c | 6993 | fnp->type = alloc_type (objfile); |
f792889a DJ |
6994 | this_type = read_type_die (die, cu); |
6995 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 6996 | { |
f792889a | 6997 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 6998 | |
f792889a | 6999 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
7000 | of the method itself (TYPE_CODE_METHOD). */ |
7001 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
7002 | TYPE_TARGET_TYPE (this_type), |
7003 | TYPE_FIELDS (this_type), | |
7004 | TYPE_NFIELDS (this_type), | |
7005 | TYPE_VARARGS (this_type)); | |
c906108c SS |
7006 | |
7007 | /* Handle static member functions. | |
c5aa993b | 7008 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
7009 | member functions. G++ helps GDB by marking the first |
7010 | parameter for non-static member functions (which is the this | |
7011 | pointer) as artificial. We obtain this information from | |
7012 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 7013 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
7014 | fnp->voffset = VOFFSET_STATIC; |
7015 | } | |
7016 | else | |
e2e0b3e5 | 7017 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 7018 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
7019 | |
7020 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 7021 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 7022 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 7023 | |
3e43a32a MS |
7024 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
7025 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
7026 | |
7027 | /* Get accessibility. */ | |
e142c38c | 7028 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 7029 | if (attr) |
60d5a603 JK |
7030 | accessibility = DW_UNSND (attr); |
7031 | else | |
7032 | accessibility = dwarf2_default_access_attribute (die, cu); | |
7033 | switch (accessibility) | |
c906108c | 7034 | { |
60d5a603 JK |
7035 | case DW_ACCESS_private: |
7036 | fnp->is_private = 1; | |
7037 | break; | |
7038 | case DW_ACCESS_protected: | |
7039 | fnp->is_protected = 1; | |
7040 | break; | |
c906108c SS |
7041 | } |
7042 | ||
b02dede2 | 7043 | /* Check for artificial methods. */ |
e142c38c | 7044 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
7045 | if (attr && DW_UNSND (attr) != 0) |
7046 | fnp->is_artificial = 1; | |
7047 | ||
0d564a31 | 7048 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
7049 | function. For older versions of GCC, this is an offset in the |
7050 | appropriate virtual table, as specified by DW_AT_containing_type. | |
7051 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
7052 | to the object address. */ |
7053 | ||
e142c38c | 7054 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 7055 | if (attr) |
8e19ed76 | 7056 | { |
aec5aa8b | 7057 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 7058 | { |
aec5aa8b TT |
7059 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
7060 | { | |
7061 | /* Old-style GCC. */ | |
7062 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
7063 | } | |
7064 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
7065 | || (DW_BLOCK (attr)->size > 1 | |
7066 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
7067 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
7068 | { | |
7069 | struct dwarf_block blk; | |
7070 | int offset; | |
7071 | ||
7072 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
7073 | ? 1 : 2); | |
7074 | blk.size = DW_BLOCK (attr)->size - offset; | |
7075 | blk.data = DW_BLOCK (attr)->data + offset; | |
7076 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
7077 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
7078 | dwarf2_complex_location_expr_complaint (); | |
7079 | else | |
7080 | fnp->voffset /= cu->header.addr_size; | |
7081 | fnp->voffset += 2; | |
7082 | } | |
7083 | else | |
7084 | dwarf2_complex_location_expr_complaint (); | |
7085 | ||
7086 | if (!fnp->fcontext) | |
7087 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
7088 | } | |
3690dd37 | 7089 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 7090 | { |
4d3c2250 | 7091 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
7092 | } |
7093 | else | |
7094 | { | |
4d3c2250 KB |
7095 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
7096 | fieldname); | |
8e19ed76 | 7097 | } |
0d564a31 | 7098 | } |
d48cc9dd DJ |
7099 | else |
7100 | { | |
7101 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
7102 | if (attr && DW_UNSND (attr)) | |
7103 | { | |
7104 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
7105 | complaint (&symfile_complaints, | |
3e43a32a MS |
7106 | _("Member function \"%s\" (offset %d) is virtual " |
7107 | "but the vtable offset is not specified"), | |
d48cc9dd | 7108 | fieldname, die->offset); |
9655fd1a | 7109 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
7110 | TYPE_CPLUS_DYNAMIC (type) = 1; |
7111 | } | |
7112 | } | |
c906108c SS |
7113 | } |
7114 | ||
7115 | /* Create the vector of member function fields, and attach it to the type. */ | |
7116 | ||
7117 | static void | |
fba45db2 | 7118 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 7119 | struct dwarf2_cu *cu) |
c906108c SS |
7120 | { |
7121 | struct fnfieldlist *flp; | |
7122 | int total_length = 0; | |
7123 | int i; | |
7124 | ||
b4ba55a1 | 7125 | if (cu->language == language_ada) |
a73c6dcd | 7126 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 7127 | |
c906108c SS |
7128 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
7129 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
7130 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
7131 | ||
7132 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
7133 | { | |
7134 | struct nextfnfield *nfp = flp->head; | |
7135 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
7136 | int k; | |
7137 | ||
7138 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
7139 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
7140 | fn_flp->fn_fields = (struct fn_field *) | |
7141 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
7142 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 7143 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
7144 | |
7145 | total_length += flp->length; | |
7146 | } | |
7147 | ||
7148 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
7149 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
7150 | } | |
7151 | ||
1168df01 JB |
7152 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
7153 | language, zero otherwise. */ | |
7154 | static int | |
7155 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
7156 | { | |
7157 | static const char vptr[] = "_vptr"; | |
987504bb | 7158 | static const char vtable[] = "vtable"; |
1168df01 | 7159 | |
987504bb JJ |
7160 | /* Look for the C++ and Java forms of the vtable. */ |
7161 | if ((cu->language == language_java | |
7162 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
7163 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
7164 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
7165 | return 1; |
7166 | ||
7167 | return 0; | |
7168 | } | |
7169 | ||
c0dd20ea | 7170 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
7171 | functions, with the ABI-specified layout. If TYPE describes |
7172 | such a structure, smash it into a member function type. | |
61049d3b DJ |
7173 | |
7174 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
7175 | This is GCC PR debug/28767. */ | |
c0dd20ea | 7176 | |
0b92b5bb TT |
7177 | static void |
7178 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 7179 | { |
0b92b5bb | 7180 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
7181 | |
7182 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
7183 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
7184 | return; | |
c0dd20ea DJ |
7185 | |
7186 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
7187 | if (TYPE_FIELD_NAME (type, 0) == NULL |
7188 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
7189 | || TYPE_FIELD_NAME (type, 1) == NULL | |
7190 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
7191 | return; | |
c0dd20ea DJ |
7192 | |
7193 | /* Find the type of the method. */ | |
0b92b5bb | 7194 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
7195 | if (pfn_type == NULL |
7196 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
7197 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 7198 | return; |
c0dd20ea DJ |
7199 | |
7200 | /* Look for the "this" argument. */ | |
7201 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
7202 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 7203 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 7204 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 7205 | return; |
c0dd20ea DJ |
7206 | |
7207 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
7208 | new_type = alloc_type (objfile); |
7209 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
7210 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
7211 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 7212 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 7213 | } |
1168df01 | 7214 | |
c906108c | 7215 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
7216 | (definition) to create a type for the structure or union. Fill in |
7217 | the type's name and general properties; the members will not be | |
7218 | processed until process_structure_type. | |
c906108c | 7219 | |
c767944b DJ |
7220 | NOTE: we need to call these functions regardless of whether or not the |
7221 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
7222 | structure or union. This gets the type entered into our set of |
7223 | user defined types. | |
7224 | ||
7225 | However, if the structure is incomplete (an opaque struct/union) | |
7226 | then suppress creating a symbol table entry for it since gdb only | |
7227 | wants to find the one with the complete definition. Note that if | |
7228 | it is complete, we just call new_symbol, which does it's own | |
7229 | checking about whether the struct/union is anonymous or not (and | |
7230 | suppresses creating a symbol table entry itself). */ | |
7231 | ||
f792889a | 7232 | static struct type * |
134d01f1 | 7233 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7234 | { |
e7c27a73 | 7235 | struct objfile *objfile = cu->objfile; |
c906108c SS |
7236 | struct type *type; |
7237 | struct attribute *attr; | |
39cbfefa | 7238 | char *name; |
c906108c | 7239 | |
348e048f DE |
7240 | /* If the definition of this type lives in .debug_types, read that type. |
7241 | Don't follow DW_AT_specification though, that will take us back up | |
7242 | the chain and we want to go down. */ | |
7243 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
7244 | if (attr) | |
7245 | { | |
7246 | struct dwarf2_cu *type_cu = cu; | |
7247 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 7248 | |
348e048f DE |
7249 | /* We could just recurse on read_structure_type, but we need to call |
7250 | get_die_type to ensure only one type for this DIE is created. | |
7251 | This is important, for example, because for c++ classes we need | |
7252 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
7253 | type = read_type_die (type_die, type_cu); | |
9dc481d3 DE |
7254 | |
7255 | /* TYPE_CU may not be the same as CU. | |
7256 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
7257 | return set_die_type (die, type, cu); |
7258 | } | |
7259 | ||
c0dd20ea | 7260 | type = alloc_type (objfile); |
c906108c | 7261 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 7262 | |
39cbfefa DJ |
7263 | name = dwarf2_name (die, cu); |
7264 | if (name != NULL) | |
c906108c | 7265 | { |
987504bb JJ |
7266 | if (cu->language == language_cplus |
7267 | || cu->language == language_java) | |
63d06c5c | 7268 | { |
3da10d80 KS |
7269 | char *full_name = (char *) dwarf2_full_name (name, die, cu); |
7270 | ||
7271 | /* dwarf2_full_name might have already finished building the DIE's | |
7272 | type. If so, there is no need to continue. */ | |
7273 | if (get_die_type (die, cu) != NULL) | |
7274 | return get_die_type (die, cu); | |
7275 | ||
7276 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
7277 | if (die->tag == DW_TAG_structure_type |
7278 | || die->tag == DW_TAG_class_type) | |
7279 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
7280 | } |
7281 | else | |
7282 | { | |
d8151005 DJ |
7283 | /* The name is already allocated along with this objfile, so |
7284 | we don't need to duplicate it for the type. */ | |
94af9270 KS |
7285 | TYPE_TAG_NAME (type) = (char *) name; |
7286 | if (die->tag == DW_TAG_class_type) | |
7287 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 7288 | } |
c906108c SS |
7289 | } |
7290 | ||
7291 | if (die->tag == DW_TAG_structure_type) | |
7292 | { | |
7293 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
7294 | } | |
7295 | else if (die->tag == DW_TAG_union_type) | |
7296 | { | |
7297 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
7298 | } | |
7299 | else | |
7300 | { | |
c906108c SS |
7301 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
7302 | } | |
7303 | ||
0cc2414c TT |
7304 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
7305 | TYPE_DECLARED_CLASS (type) = 1; | |
7306 | ||
e142c38c | 7307 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7308 | if (attr) |
7309 | { | |
7310 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7311 | } | |
7312 | else | |
7313 | { | |
7314 | TYPE_LENGTH (type) = 0; | |
7315 | } | |
7316 | ||
876cecd0 | 7317 | TYPE_STUB_SUPPORTED (type) = 1; |
dc718098 | 7318 | if (die_is_declaration (die, cu)) |
876cecd0 | 7319 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
7320 | else if (attr == NULL && die->child == NULL |
7321 | && producer_is_realview (cu->producer)) | |
7322 | /* RealView does not output the required DW_AT_declaration | |
7323 | on incomplete types. */ | |
7324 | TYPE_STUB (type) = 1; | |
dc718098 | 7325 | |
c906108c SS |
7326 | /* We need to add the type field to the die immediately so we don't |
7327 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 7328 | type within the structure itself. */ |
1c379e20 | 7329 | set_die_type (die, type, cu); |
c906108c | 7330 | |
7e314c57 JK |
7331 | /* set_die_type should be already done. */ |
7332 | set_descriptive_type (type, die, cu); | |
7333 | ||
c767944b DJ |
7334 | return type; |
7335 | } | |
7336 | ||
7337 | /* Finish creating a structure or union type, including filling in | |
7338 | its members and creating a symbol for it. */ | |
7339 | ||
7340 | static void | |
7341 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
7342 | { | |
7343 | struct objfile *objfile = cu->objfile; | |
7344 | struct die_info *child_die = die->child; | |
7345 | struct type *type; | |
7346 | ||
7347 | type = get_die_type (die, cu); | |
7348 | if (type == NULL) | |
7349 | type = read_structure_type (die, cu); | |
7350 | ||
e142c38c | 7351 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
7352 | { |
7353 | struct field_info fi; | |
7354 | struct die_info *child_die; | |
34eaf542 | 7355 | VEC (symbolp) *template_args = NULL; |
c767944b | 7356 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
7357 | |
7358 | memset (&fi, 0, sizeof (struct field_info)); | |
7359 | ||
639d11d3 | 7360 | child_die = die->child; |
c906108c SS |
7361 | |
7362 | while (child_die && child_die->tag) | |
7363 | { | |
a9a9bd0f DC |
7364 | if (child_die->tag == DW_TAG_member |
7365 | || child_die->tag == DW_TAG_variable) | |
c906108c | 7366 | { |
a9a9bd0f DC |
7367 | /* NOTE: carlton/2002-11-05: A C++ static data member |
7368 | should be a DW_TAG_member that is a declaration, but | |
7369 | all versions of G++ as of this writing (so through at | |
7370 | least 3.2.1) incorrectly generate DW_TAG_variable | |
7371 | tags for them instead. */ | |
e7c27a73 | 7372 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 7373 | } |
8713b1b1 | 7374 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 7375 | { |
0963b4bd | 7376 | /* C++ member function. */ |
e7c27a73 | 7377 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
7378 | } |
7379 | else if (child_die->tag == DW_TAG_inheritance) | |
7380 | { | |
7381 | /* C++ base class field. */ | |
e7c27a73 | 7382 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 7383 | } |
98751a41 JK |
7384 | else if (child_die->tag == DW_TAG_typedef) |
7385 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
7386 | else if (child_die->tag == DW_TAG_template_type_param |
7387 | || child_die->tag == DW_TAG_template_value_param) | |
7388 | { | |
7389 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
7390 | ||
f1078f66 DJ |
7391 | if (arg != NULL) |
7392 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
7393 | } |
7394 | ||
c906108c SS |
7395 | child_die = sibling_die (child_die); |
7396 | } | |
7397 | ||
34eaf542 TT |
7398 | /* Attach template arguments to type. */ |
7399 | if (! VEC_empty (symbolp, template_args)) | |
7400 | { | |
7401 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
7402 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
7403 | = VEC_length (symbolp, template_args); | |
7404 | TYPE_TEMPLATE_ARGUMENTS (type) | |
7405 | = obstack_alloc (&objfile->objfile_obstack, | |
7406 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
7407 | * sizeof (struct symbol *))); | |
7408 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
7409 | VEC_address (symbolp, template_args), | |
7410 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
7411 | * sizeof (struct symbol *))); | |
7412 | VEC_free (symbolp, template_args); | |
7413 | } | |
7414 | ||
c906108c SS |
7415 | /* Attach fields and member functions to the type. */ |
7416 | if (fi.nfields) | |
e7c27a73 | 7417 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
7418 | if (fi.nfnfields) |
7419 | { | |
e7c27a73 | 7420 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 7421 | |
c5aa993b | 7422 | /* Get the type which refers to the base class (possibly this |
c906108c | 7423 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
7424 | class from the DW_AT_containing_type attribute. This use of |
7425 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 7426 | |
e142c38c | 7427 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 7428 | { |
e7c27a73 | 7429 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
7430 | |
7431 | TYPE_VPTR_BASETYPE (type) = t; | |
7432 | if (type == t) | |
7433 | { | |
c906108c SS |
7434 | int i; |
7435 | ||
7436 | /* Our own class provides vtbl ptr. */ | |
7437 | for (i = TYPE_NFIELDS (t) - 1; | |
7438 | i >= TYPE_N_BASECLASSES (t); | |
7439 | --i) | |
7440 | { | |
7441 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
7442 | ||
1168df01 | 7443 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
7444 | { |
7445 | TYPE_VPTR_FIELDNO (type) = i; | |
7446 | break; | |
7447 | } | |
7448 | } | |
7449 | ||
7450 | /* Complain if virtual function table field not found. */ | |
7451 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 7452 | complaint (&symfile_complaints, |
3e43a32a MS |
7453 | _("virtual function table pointer " |
7454 | "not found when defining class '%s'"), | |
4d3c2250 KB |
7455 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
7456 | ""); | |
c906108c SS |
7457 | } |
7458 | else | |
7459 | { | |
7460 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
7461 | } | |
7462 | } | |
f6235d4c EZ |
7463 | else if (cu->producer |
7464 | && strncmp (cu->producer, | |
7465 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
7466 | { | |
7467 | /* The IBM XLC compiler does not provide direct indication | |
7468 | of the containing type, but the vtable pointer is | |
7469 | always named __vfp. */ | |
7470 | ||
7471 | int i; | |
7472 | ||
7473 | for (i = TYPE_NFIELDS (type) - 1; | |
7474 | i >= TYPE_N_BASECLASSES (type); | |
7475 | --i) | |
7476 | { | |
7477 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
7478 | { | |
7479 | TYPE_VPTR_FIELDNO (type) = i; | |
7480 | TYPE_VPTR_BASETYPE (type) = type; | |
7481 | break; | |
7482 | } | |
7483 | } | |
7484 | } | |
c906108c | 7485 | } |
98751a41 JK |
7486 | |
7487 | /* Copy fi.typedef_field_list linked list elements content into the | |
7488 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
7489 | if (fi.typedef_field_list) | |
7490 | { | |
7491 | int i = fi.typedef_field_list_count; | |
7492 | ||
a0d7a4ff | 7493 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
7494 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
7495 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
7496 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
7497 | ||
7498 | /* Reverse the list order to keep the debug info elements order. */ | |
7499 | while (--i >= 0) | |
7500 | { | |
7501 | struct typedef_field *dest, *src; | |
6e70227d | 7502 | |
98751a41 JK |
7503 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
7504 | src = &fi.typedef_field_list->field; | |
7505 | fi.typedef_field_list = fi.typedef_field_list->next; | |
7506 | *dest = *src; | |
7507 | } | |
7508 | } | |
c767944b DJ |
7509 | |
7510 | do_cleanups (back_to); | |
eb2a6f42 TT |
7511 | |
7512 | if (HAVE_CPLUS_STRUCT (type)) | |
7513 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 7514 | } |
63d06c5c | 7515 | |
0b92b5bb TT |
7516 | quirk_gcc_member_function_pointer (type, cu->objfile); |
7517 | ||
90aeadfc DC |
7518 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
7519 | snapshots) has been known to create a die giving a declaration | |
7520 | for a class that has, as a child, a die giving a definition for a | |
7521 | nested class. So we have to process our children even if the | |
7522 | current die is a declaration. Normally, of course, a declaration | |
7523 | won't have any children at all. */ | |
134d01f1 | 7524 | |
90aeadfc DC |
7525 | while (child_die != NULL && child_die->tag) |
7526 | { | |
7527 | if (child_die->tag == DW_TAG_member | |
7528 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
7529 | || child_die->tag == DW_TAG_inheritance |
7530 | || child_die->tag == DW_TAG_template_value_param | |
7531 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 7532 | { |
90aeadfc | 7533 | /* Do nothing. */ |
134d01f1 | 7534 | } |
90aeadfc DC |
7535 | else |
7536 | process_die (child_die, cu); | |
134d01f1 | 7537 | |
90aeadfc | 7538 | child_die = sibling_die (child_die); |
134d01f1 DJ |
7539 | } |
7540 | ||
fa4028e9 JB |
7541 | /* Do not consider external references. According to the DWARF standard, |
7542 | these DIEs are identified by the fact that they have no byte_size | |
7543 | attribute, and a declaration attribute. */ | |
7544 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
7545 | || !die_is_declaration (die, cu)) | |
c767944b | 7546 | new_symbol (die, type, cu); |
134d01f1 DJ |
7547 | } |
7548 | ||
7549 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
7550 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 7551 | |
f792889a | 7552 | static struct type * |
134d01f1 | 7553 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7554 | { |
e7c27a73 | 7555 | struct objfile *objfile = cu->objfile; |
c906108c | 7556 | struct type *type; |
c906108c | 7557 | struct attribute *attr; |
0114d602 | 7558 | const char *name; |
134d01f1 | 7559 | |
348e048f DE |
7560 | /* If the definition of this type lives in .debug_types, read that type. |
7561 | Don't follow DW_AT_specification though, that will take us back up | |
7562 | the chain and we want to go down. */ | |
7563 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
7564 | if (attr) | |
7565 | { | |
7566 | struct dwarf2_cu *type_cu = cu; | |
7567 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 7568 | |
348e048f | 7569 | type = read_type_die (type_die, type_cu); |
9dc481d3 DE |
7570 | |
7571 | /* TYPE_CU may not be the same as CU. | |
7572 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
7573 | return set_die_type (die, type, cu); |
7574 | } | |
7575 | ||
c906108c SS |
7576 | type = alloc_type (objfile); |
7577 | ||
7578 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 7579 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 7580 | if (name != NULL) |
0114d602 | 7581 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 7582 | |
e142c38c | 7583 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7584 | if (attr) |
7585 | { | |
7586 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7587 | } | |
7588 | else | |
7589 | { | |
7590 | TYPE_LENGTH (type) = 0; | |
7591 | } | |
7592 | ||
137033e9 JB |
7593 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
7594 | declared as private in the package spec, and then defined only | |
7595 | inside the package body. Such types are known as Taft Amendment | |
7596 | Types. When another package uses such a type, an incomplete DIE | |
7597 | may be generated by the compiler. */ | |
02eb380e | 7598 | if (die_is_declaration (die, cu)) |
876cecd0 | 7599 | TYPE_STUB (type) = 1; |
02eb380e | 7600 | |
f792889a | 7601 | return set_die_type (die, type, cu); |
134d01f1 DJ |
7602 | } |
7603 | ||
7604 | /* Given a pointer to a die which begins an enumeration, process all | |
7605 | the dies that define the members of the enumeration, and create the | |
7606 | symbol for the enumeration type. | |
7607 | ||
7608 | NOTE: We reverse the order of the element list. */ | |
7609 | ||
7610 | static void | |
7611 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
7612 | { | |
f792889a | 7613 | struct type *this_type; |
134d01f1 | 7614 | |
f792889a DJ |
7615 | this_type = get_die_type (die, cu); |
7616 | if (this_type == NULL) | |
7617 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 7618 | |
639d11d3 | 7619 | if (die->child != NULL) |
c906108c | 7620 | { |
9dc481d3 DE |
7621 | struct die_info *child_die; |
7622 | struct symbol *sym; | |
7623 | struct field *fields = NULL; | |
7624 | int num_fields = 0; | |
7625 | int unsigned_enum = 1; | |
7626 | char *name; | |
7627 | ||
639d11d3 | 7628 | child_die = die->child; |
c906108c SS |
7629 | while (child_die && child_die->tag) |
7630 | { | |
7631 | if (child_die->tag != DW_TAG_enumerator) | |
7632 | { | |
e7c27a73 | 7633 | process_die (child_die, cu); |
c906108c SS |
7634 | } |
7635 | else | |
7636 | { | |
39cbfefa DJ |
7637 | name = dwarf2_name (child_die, cu); |
7638 | if (name) | |
c906108c | 7639 | { |
f792889a | 7640 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
7641 | if (SYMBOL_VALUE (sym) < 0) |
7642 | unsigned_enum = 0; | |
7643 | ||
7644 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
7645 | { | |
7646 | fields = (struct field *) | |
7647 | xrealloc (fields, | |
7648 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 7649 | * sizeof (struct field)); |
c906108c SS |
7650 | } |
7651 | ||
3567439c | 7652 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 7653 | FIELD_TYPE (fields[num_fields]) = NULL; |
d6a843b5 | 7654 | SET_FIELD_BITPOS (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
7655 | FIELD_BITSIZE (fields[num_fields]) = 0; |
7656 | ||
7657 | num_fields++; | |
7658 | } | |
7659 | } | |
7660 | ||
7661 | child_die = sibling_die (child_die); | |
7662 | } | |
7663 | ||
7664 | if (num_fields) | |
7665 | { | |
f792889a DJ |
7666 | TYPE_NFIELDS (this_type) = num_fields; |
7667 | TYPE_FIELDS (this_type) = (struct field *) | |
7668 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
7669 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 7670 | sizeof (struct field) * num_fields); |
b8c9b27d | 7671 | xfree (fields); |
c906108c SS |
7672 | } |
7673 | if (unsigned_enum) | |
876cecd0 | 7674 | TYPE_UNSIGNED (this_type) = 1; |
c906108c | 7675 | } |
134d01f1 | 7676 | |
f792889a | 7677 | new_symbol (die, this_type, cu); |
c906108c SS |
7678 | } |
7679 | ||
7680 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
7681 | the DIE's type field. For now, this only handles one dimensional | |
7682 | arrays. */ | |
7683 | ||
f792889a | 7684 | static struct type * |
e7c27a73 | 7685 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7686 | { |
e7c27a73 | 7687 | struct objfile *objfile = cu->objfile; |
c906108c | 7688 | struct die_info *child_die; |
7e314c57 | 7689 | struct type *type; |
c906108c SS |
7690 | struct type *element_type, *range_type, *index_type; |
7691 | struct type **range_types = NULL; | |
7692 | struct attribute *attr; | |
7693 | int ndim = 0; | |
7694 | struct cleanup *back_to; | |
39cbfefa | 7695 | char *name; |
c906108c | 7696 | |
e7c27a73 | 7697 | element_type = die_type (die, cu); |
c906108c | 7698 | |
7e314c57 JK |
7699 | /* The die_type call above may have already set the type for this DIE. */ |
7700 | type = get_die_type (die, cu); | |
7701 | if (type) | |
7702 | return type; | |
7703 | ||
c906108c SS |
7704 | /* Irix 6.2 native cc creates array types without children for |
7705 | arrays with unspecified length. */ | |
639d11d3 | 7706 | if (die->child == NULL) |
c906108c | 7707 | { |
46bf5051 | 7708 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 7709 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
7710 | type = create_array_type (NULL, element_type, range_type); |
7711 | return set_die_type (die, type, cu); | |
c906108c SS |
7712 | } |
7713 | ||
7714 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 7715 | child_die = die->child; |
c906108c SS |
7716 | while (child_die && child_die->tag) |
7717 | { | |
7718 | if (child_die->tag == DW_TAG_subrange_type) | |
7719 | { | |
f792889a | 7720 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 7721 | |
f792889a | 7722 | if (child_type != NULL) |
a02abb62 | 7723 | { |
0963b4bd MS |
7724 | /* The range type was succesfully read. Save it for the |
7725 | array type creation. */ | |
a02abb62 JB |
7726 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
7727 | { | |
7728 | range_types = (struct type **) | |
7729 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
7730 | * sizeof (struct type *)); | |
7731 | if (ndim == 0) | |
7732 | make_cleanup (free_current_contents, &range_types); | |
7733 | } | |
f792889a | 7734 | range_types[ndim++] = child_type; |
a02abb62 | 7735 | } |
c906108c SS |
7736 | } |
7737 | child_die = sibling_die (child_die); | |
7738 | } | |
7739 | ||
7740 | /* Dwarf2 dimensions are output from left to right, create the | |
7741 | necessary array types in backwards order. */ | |
7ca2d3a3 | 7742 | |
c906108c | 7743 | type = element_type; |
7ca2d3a3 DL |
7744 | |
7745 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
7746 | { | |
7747 | int i = 0; | |
9a619af0 | 7748 | |
7ca2d3a3 DL |
7749 | while (i < ndim) |
7750 | type = create_array_type (NULL, type, range_types[i++]); | |
7751 | } | |
7752 | else | |
7753 | { | |
7754 | while (ndim-- > 0) | |
7755 | type = create_array_type (NULL, type, range_types[ndim]); | |
7756 | } | |
c906108c | 7757 | |
f5f8a009 EZ |
7758 | /* Understand Dwarf2 support for vector types (like they occur on |
7759 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
7760 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
7761 | custom vendor extension. The main difference between a regular | |
7762 | array and the vector variant is that vectors are passed by value | |
7763 | to functions. */ | |
e142c38c | 7764 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 7765 | if (attr) |
ea37ba09 | 7766 | make_vector_type (type); |
f5f8a009 | 7767 | |
dbc98a8b KW |
7768 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
7769 | implementation may choose to implement triple vectors using this | |
7770 | attribute. */ | |
7771 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
7772 | if (attr) | |
7773 | { | |
7774 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
7775 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7776 | else | |
3e43a32a MS |
7777 | complaint (&symfile_complaints, |
7778 | _("DW_AT_byte_size for array type smaller " | |
7779 | "than the total size of elements")); | |
dbc98a8b KW |
7780 | } |
7781 | ||
39cbfefa DJ |
7782 | name = dwarf2_name (die, cu); |
7783 | if (name) | |
7784 | TYPE_NAME (type) = name; | |
6e70227d | 7785 | |
0963b4bd | 7786 | /* Install the type in the die. */ |
7e314c57 JK |
7787 | set_die_type (die, type, cu); |
7788 | ||
7789 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
7790 | set_descriptive_type (type, die, cu); |
7791 | ||
c906108c SS |
7792 | do_cleanups (back_to); |
7793 | ||
7e314c57 | 7794 | return type; |
c906108c SS |
7795 | } |
7796 | ||
7ca2d3a3 | 7797 | static enum dwarf_array_dim_ordering |
6e70227d | 7798 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
7799 | { |
7800 | struct attribute *attr; | |
7801 | ||
7802 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
7803 | ||
7804 | if (attr) return DW_SND (attr); | |
7805 | ||
0963b4bd MS |
7806 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
7807 | opposite order to the dwarf2 specification, but data is still | |
7808 | laid out as per normal fortran. | |
7ca2d3a3 | 7809 | |
0963b4bd MS |
7810 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
7811 | version checking. */ | |
7ca2d3a3 | 7812 | |
905e0470 PM |
7813 | if (cu->language == language_fortran |
7814 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
7815 | { |
7816 | return DW_ORD_row_major; | |
7817 | } | |
7818 | ||
6e70227d | 7819 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
7820 | { |
7821 | case array_column_major: | |
7822 | return DW_ORD_col_major; | |
7823 | case array_row_major: | |
7824 | default: | |
7825 | return DW_ORD_row_major; | |
7826 | }; | |
7827 | } | |
7828 | ||
72019c9c | 7829 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 7830 | the DIE's type field. */ |
72019c9c | 7831 | |
f792889a | 7832 | static struct type * |
72019c9c GM |
7833 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
7834 | { | |
7e314c57 JK |
7835 | struct type *domain_type, *set_type; |
7836 | struct attribute *attr; | |
f792889a | 7837 | |
7e314c57 JK |
7838 | domain_type = die_type (die, cu); |
7839 | ||
7840 | /* The die_type call above may have already set the type for this DIE. */ | |
7841 | set_type = get_die_type (die, cu); | |
7842 | if (set_type) | |
7843 | return set_type; | |
7844 | ||
7845 | set_type = create_set_type (NULL, domain_type); | |
7846 | ||
7847 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
7848 | if (attr) |
7849 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 7850 | |
f792889a | 7851 | return set_die_type (die, set_type, cu); |
72019c9c | 7852 | } |
7ca2d3a3 | 7853 | |
c906108c SS |
7854 | /* First cut: install each common block member as a global variable. */ |
7855 | ||
7856 | static void | |
e7c27a73 | 7857 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7858 | { |
7859 | struct die_info *child_die; | |
7860 | struct attribute *attr; | |
7861 | struct symbol *sym; | |
7862 | CORE_ADDR base = (CORE_ADDR) 0; | |
7863 | ||
e142c38c | 7864 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7865 | if (attr) |
7866 | { | |
0963b4bd | 7867 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
7868 | if (attr_form_is_block (attr)) |
7869 | { | |
e7c27a73 | 7870 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 7871 | } |
3690dd37 | 7872 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 7873 | { |
4d3c2250 | 7874 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
7875 | } |
7876 | else | |
7877 | { | |
4d3c2250 KB |
7878 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
7879 | "common block member"); | |
8e19ed76 | 7880 | } |
c906108c | 7881 | } |
639d11d3 | 7882 | if (die->child != NULL) |
c906108c | 7883 | { |
639d11d3 | 7884 | child_die = die->child; |
c906108c SS |
7885 | while (child_die && child_die->tag) |
7886 | { | |
74ac6d43 TT |
7887 | LONGEST offset; |
7888 | ||
e7c27a73 | 7889 | sym = new_symbol (child_die, NULL, cu); |
e8d28ef4 TT |
7890 | if (sym != NULL |
7891 | && handle_data_member_location (child_die, cu, &offset)) | |
c906108c | 7892 | { |
74ac6d43 | 7893 | SYMBOL_VALUE_ADDRESS (sym) = base + offset; |
c906108c SS |
7894 | add_symbol_to_list (sym, &global_symbols); |
7895 | } | |
7896 | child_die = sibling_die (child_die); | |
7897 | } | |
7898 | } | |
7899 | } | |
7900 | ||
0114d602 | 7901 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 7902 | |
0114d602 DJ |
7903 | static struct type * |
7904 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 7905 | { |
e7c27a73 | 7906 | struct objfile *objfile = cu->objfile; |
0114d602 | 7907 | const char *previous_prefix, *name; |
9219021c | 7908 | int is_anonymous; |
0114d602 DJ |
7909 | struct type *type; |
7910 | ||
7911 | /* For extensions, reuse the type of the original namespace. */ | |
7912 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
7913 | { | |
7914 | struct die_info *ext_die; | |
7915 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 7916 | |
0114d602 DJ |
7917 | ext_die = dwarf2_extension (die, &ext_cu); |
7918 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
7919 | |
7920 | /* EXT_CU may not be the same as CU. | |
7921 | Ensure TYPE is recorded in CU's type_hash table. */ | |
0114d602 DJ |
7922 | return set_die_type (die, type, cu); |
7923 | } | |
9219021c | 7924 | |
e142c38c | 7925 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
7926 | |
7927 | /* Now build the name of the current namespace. */ | |
7928 | ||
0114d602 DJ |
7929 | previous_prefix = determine_prefix (die, cu); |
7930 | if (previous_prefix[0] != '\0') | |
7931 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 7932 | previous_prefix, name, 0, cu); |
0114d602 DJ |
7933 | |
7934 | /* Create the type. */ | |
7935 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
7936 | objfile); | |
7937 | TYPE_NAME (type) = (char *) name; | |
7938 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7939 | ||
60531b24 | 7940 | return set_die_type (die, type, cu); |
0114d602 DJ |
7941 | } |
7942 | ||
7943 | /* Read a C++ namespace. */ | |
7944 | ||
7945 | static void | |
7946 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
7947 | { | |
7948 | struct objfile *objfile = cu->objfile; | |
0114d602 | 7949 | int is_anonymous; |
9219021c | 7950 | |
5c4e30ca DC |
7951 | /* Add a symbol associated to this if we haven't seen the namespace |
7952 | before. Also, add a using directive if it's an anonymous | |
7953 | namespace. */ | |
9219021c | 7954 | |
f2f0e013 | 7955 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
7956 | { |
7957 | struct type *type; | |
7958 | ||
0114d602 | 7959 | type = read_type_die (die, cu); |
e7c27a73 | 7960 | new_symbol (die, type, cu); |
5c4e30ca | 7961 | |
e8e80198 | 7962 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 7963 | if (is_anonymous) |
0114d602 DJ |
7964 | { |
7965 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 7966 | |
c0cc3a76 | 7967 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
32019081 | 7968 | NULL, NULL, &objfile->objfile_obstack); |
0114d602 | 7969 | } |
5c4e30ca | 7970 | } |
9219021c | 7971 | |
639d11d3 | 7972 | if (die->child != NULL) |
d9fa45fe | 7973 | { |
639d11d3 | 7974 | struct die_info *child_die = die->child; |
6e70227d | 7975 | |
d9fa45fe DC |
7976 | while (child_die && child_die->tag) |
7977 | { | |
e7c27a73 | 7978 | process_die (child_die, cu); |
d9fa45fe DC |
7979 | child_die = sibling_die (child_die); |
7980 | } | |
7981 | } | |
38d518c9 EZ |
7982 | } |
7983 | ||
f55ee35c JK |
7984 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
7985 | imported module. Still we need that type as local Fortran "use ... only" | |
7986 | declaration imports depend on the created type in determine_prefix. */ | |
7987 | ||
7988 | static struct type * | |
7989 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
7990 | { | |
7991 | struct objfile *objfile = cu->objfile; | |
7992 | char *module_name; | |
7993 | struct type *type; | |
7994 | ||
7995 | module_name = dwarf2_name (die, cu); | |
7996 | if (!module_name) | |
3e43a32a MS |
7997 | complaint (&symfile_complaints, |
7998 | _("DW_TAG_module has no name, offset 0x%x"), | |
f55ee35c JK |
7999 | die->offset); |
8000 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); | |
8001 | ||
8002 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
8003 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
8004 | ||
8005 | return set_die_type (die, type, cu); | |
8006 | } | |
8007 | ||
5d7cb8df JK |
8008 | /* Read a Fortran module. */ |
8009 | ||
8010 | static void | |
8011 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
8012 | { | |
8013 | struct die_info *child_die = die->child; | |
8014 | ||
5d7cb8df JK |
8015 | while (child_die && child_die->tag) |
8016 | { | |
8017 | process_die (child_die, cu); | |
8018 | child_die = sibling_die (child_die); | |
8019 | } | |
8020 | } | |
8021 | ||
38d518c9 EZ |
8022 | /* Return the name of the namespace represented by DIE. Set |
8023 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
8024 | namespace. */ | |
8025 | ||
8026 | static const char * | |
e142c38c | 8027 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
8028 | { |
8029 | struct die_info *current_die; | |
8030 | const char *name = NULL; | |
8031 | ||
8032 | /* Loop through the extensions until we find a name. */ | |
8033 | ||
8034 | for (current_die = die; | |
8035 | current_die != NULL; | |
f2f0e013 | 8036 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 8037 | { |
e142c38c | 8038 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
8039 | if (name != NULL) |
8040 | break; | |
8041 | } | |
8042 | ||
8043 | /* Is it an anonymous namespace? */ | |
8044 | ||
8045 | *is_anonymous = (name == NULL); | |
8046 | if (*is_anonymous) | |
2b1dbab0 | 8047 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
8048 | |
8049 | return name; | |
d9fa45fe DC |
8050 | } |
8051 | ||
c906108c SS |
8052 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
8053 | the user defined type vector. */ | |
8054 | ||
f792889a | 8055 | static struct type * |
e7c27a73 | 8056 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8057 | { |
5e2b427d | 8058 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 8059 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 8060 | struct type *type; |
8b2dbe47 KB |
8061 | struct attribute *attr_byte_size; |
8062 | struct attribute *attr_address_class; | |
8063 | int byte_size, addr_class; | |
7e314c57 JK |
8064 | struct type *target_type; |
8065 | ||
8066 | target_type = die_type (die, cu); | |
c906108c | 8067 | |
7e314c57 JK |
8068 | /* The die_type call above may have already set the type for this DIE. */ |
8069 | type = get_die_type (die, cu); | |
8070 | if (type) | |
8071 | return type; | |
8072 | ||
8073 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 8074 | |
e142c38c | 8075 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
8076 | if (attr_byte_size) |
8077 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 8078 | else |
8b2dbe47 KB |
8079 | byte_size = cu_header->addr_size; |
8080 | ||
e142c38c | 8081 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
8082 | if (attr_address_class) |
8083 | addr_class = DW_UNSND (attr_address_class); | |
8084 | else | |
8085 | addr_class = DW_ADDR_none; | |
8086 | ||
8087 | /* If the pointer size or address class is different than the | |
8088 | default, create a type variant marked as such and set the | |
8089 | length accordingly. */ | |
8090 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 8091 | { |
5e2b427d | 8092 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
8093 | { |
8094 | int type_flags; | |
8095 | ||
849957d9 | 8096 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 8097 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
8098 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
8099 | == 0); | |
8b2dbe47 KB |
8100 | type = make_type_with_address_space (type, type_flags); |
8101 | } | |
8102 | else if (TYPE_LENGTH (type) != byte_size) | |
8103 | { | |
3e43a32a MS |
8104 | complaint (&symfile_complaints, |
8105 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 8106 | } |
6e70227d | 8107 | else |
9a619af0 MS |
8108 | { |
8109 | /* Should we also complain about unhandled address classes? */ | |
8110 | } | |
c906108c | 8111 | } |
8b2dbe47 KB |
8112 | |
8113 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 8114 | return set_die_type (die, type, cu); |
c906108c SS |
8115 | } |
8116 | ||
8117 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
8118 | the user defined type vector. */ | |
8119 | ||
f792889a | 8120 | static struct type * |
e7c27a73 | 8121 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
8122 | { |
8123 | struct type *type; | |
8124 | struct type *to_type; | |
8125 | struct type *domain; | |
8126 | ||
e7c27a73 DJ |
8127 | to_type = die_type (die, cu); |
8128 | domain = die_containing_type (die, cu); | |
0d5de010 | 8129 | |
7e314c57 JK |
8130 | /* The calls above may have already set the type for this DIE. */ |
8131 | type = get_die_type (die, cu); | |
8132 | if (type) | |
8133 | return type; | |
8134 | ||
0d5de010 DJ |
8135 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
8136 | type = lookup_methodptr_type (to_type); | |
8137 | else | |
8138 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 8139 | |
f792889a | 8140 | return set_die_type (die, type, cu); |
c906108c SS |
8141 | } |
8142 | ||
8143 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
8144 | the user defined type vector. */ | |
8145 | ||
f792889a | 8146 | static struct type * |
e7c27a73 | 8147 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8148 | { |
e7c27a73 | 8149 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 8150 | struct type *type, *target_type; |
c906108c SS |
8151 | struct attribute *attr; |
8152 | ||
7e314c57 JK |
8153 | target_type = die_type (die, cu); |
8154 | ||
8155 | /* The die_type call above may have already set the type for this DIE. */ | |
8156 | type = get_die_type (die, cu); | |
8157 | if (type) | |
8158 | return type; | |
8159 | ||
8160 | type = lookup_reference_type (target_type); | |
e142c38c | 8161 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
8162 | if (attr) |
8163 | { | |
8164 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
8165 | } | |
8166 | else | |
8167 | { | |
107d2387 | 8168 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 8169 | } |
f792889a | 8170 | return set_die_type (die, type, cu); |
c906108c SS |
8171 | } |
8172 | ||
f792889a | 8173 | static struct type * |
e7c27a73 | 8174 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8175 | { |
f792889a | 8176 | struct type *base_type, *cv_type; |
c906108c | 8177 | |
e7c27a73 | 8178 | base_type = die_type (die, cu); |
7e314c57 JK |
8179 | |
8180 | /* The die_type call above may have already set the type for this DIE. */ | |
8181 | cv_type = get_die_type (die, cu); | |
8182 | if (cv_type) | |
8183 | return cv_type; | |
8184 | ||
2f608a3a KW |
8185 | /* In case the const qualifier is applied to an array type, the element type |
8186 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
8187 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
8188 | { | |
8189 | struct type *el_type, *inner_array; | |
8190 | ||
8191 | base_type = copy_type (base_type); | |
8192 | inner_array = base_type; | |
8193 | ||
8194 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
8195 | { | |
8196 | TYPE_TARGET_TYPE (inner_array) = | |
8197 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
8198 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
8199 | } | |
8200 | ||
8201 | el_type = TYPE_TARGET_TYPE (inner_array); | |
8202 | TYPE_TARGET_TYPE (inner_array) = | |
8203 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
8204 | ||
8205 | return set_die_type (die, base_type, cu); | |
8206 | } | |
8207 | ||
f792889a DJ |
8208 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
8209 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
8210 | } |
8211 | ||
f792889a | 8212 | static struct type * |
e7c27a73 | 8213 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8214 | { |
f792889a | 8215 | struct type *base_type, *cv_type; |
c906108c | 8216 | |
e7c27a73 | 8217 | base_type = die_type (die, cu); |
7e314c57 JK |
8218 | |
8219 | /* The die_type call above may have already set the type for this DIE. */ | |
8220 | cv_type = get_die_type (die, cu); | |
8221 | if (cv_type) | |
8222 | return cv_type; | |
8223 | ||
f792889a DJ |
8224 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
8225 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
8226 | } |
8227 | ||
8228 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
8229 | the user defined type vector. It isn't really a user defined type, | |
8230 | but it behaves like one, with other DIE's using an AT_user_def_type | |
8231 | attribute to reference it. */ | |
8232 | ||
f792889a | 8233 | static struct type * |
e7c27a73 | 8234 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8235 | { |
e7c27a73 | 8236 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 8237 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
8238 | struct type *type, *range_type, *index_type, *char_type; |
8239 | struct attribute *attr; | |
8240 | unsigned int length; | |
8241 | ||
e142c38c | 8242 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
8243 | if (attr) |
8244 | { | |
8245 | length = DW_UNSND (attr); | |
8246 | } | |
8247 | else | |
8248 | { | |
0963b4bd | 8249 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 8250 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
8251 | if (attr) |
8252 | { | |
8253 | length = DW_UNSND (attr); | |
8254 | } | |
8255 | else | |
8256 | { | |
8257 | length = 1; | |
8258 | } | |
c906108c | 8259 | } |
6ccb9162 | 8260 | |
46bf5051 | 8261 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 8262 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
8263 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
8264 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 8265 | |
f792889a | 8266 | return set_die_type (die, type, cu); |
c906108c SS |
8267 | } |
8268 | ||
8269 | /* Handle DIES due to C code like: | |
8270 | ||
8271 | struct foo | |
c5aa993b JM |
8272 | { |
8273 | int (*funcp)(int a, long l); | |
8274 | int b; | |
8275 | }; | |
c906108c | 8276 | |
0963b4bd | 8277 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 8278 | |
f792889a | 8279 | static struct type * |
e7c27a73 | 8280 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8281 | { |
0963b4bd MS |
8282 | struct type *type; /* Type that this function returns. */ |
8283 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
8284 | struct attribute *attr; |
8285 | ||
e7c27a73 | 8286 | type = die_type (die, cu); |
7e314c57 JK |
8287 | |
8288 | /* The die_type call above may have already set the type for this DIE. */ | |
8289 | ftype = get_die_type (die, cu); | |
8290 | if (ftype) | |
8291 | return ftype; | |
8292 | ||
0c8b41f1 | 8293 | ftype = lookup_function_type (type); |
c906108c | 8294 | |
5b8101ae | 8295 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 8296 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 8297 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 8298 | || cu->language == language_cplus |
5b8101ae PM |
8299 | || cu->language == language_java |
8300 | || cu->language == language_pascal) | |
876cecd0 | 8301 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
8302 | else if (producer_is_realview (cu->producer)) |
8303 | /* RealView does not emit DW_AT_prototyped. We can not | |
8304 | distinguish prototyped and unprototyped functions; default to | |
8305 | prototyped, since that is more common in modern code (and | |
8306 | RealView warns about unprototyped functions). */ | |
8307 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 8308 | |
c055b101 CV |
8309 | /* Store the calling convention in the type if it's available in |
8310 | the subroutine die. Otherwise set the calling convention to | |
8311 | the default value DW_CC_normal. */ | |
8312 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
8313 | if (attr) |
8314 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
8315 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
8316 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
8317 | else | |
8318 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
8319 | |
8320 | /* We need to add the subroutine type to the die immediately so | |
8321 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 8322 | declared as the same subroutine type. */ |
76c10ea2 | 8323 | set_die_type (die, ftype, cu); |
6e70227d | 8324 | |
639d11d3 | 8325 | if (die->child != NULL) |
c906108c | 8326 | { |
8072405b | 8327 | struct type *void_type = objfile_type (cu->objfile)->builtin_void; |
c906108c | 8328 | struct die_info *child_die; |
8072405b | 8329 | int nparams, iparams; |
c906108c SS |
8330 | |
8331 | /* Count the number of parameters. | |
8332 | FIXME: GDB currently ignores vararg functions, but knows about | |
8333 | vararg member functions. */ | |
8072405b | 8334 | nparams = 0; |
639d11d3 | 8335 | child_die = die->child; |
c906108c SS |
8336 | while (child_die && child_die->tag) |
8337 | { | |
8338 | if (child_die->tag == DW_TAG_formal_parameter) | |
8339 | nparams++; | |
8340 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 8341 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
8342 | child_die = sibling_die (child_die); |
8343 | } | |
8344 | ||
8345 | /* Allocate storage for parameters and fill them in. */ | |
8346 | TYPE_NFIELDS (ftype) = nparams; | |
8347 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 8348 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 8349 | |
8072405b JK |
8350 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
8351 | even if we error out during the parameters reading below. */ | |
8352 | for (iparams = 0; iparams < nparams; iparams++) | |
8353 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
8354 | ||
8355 | iparams = 0; | |
639d11d3 | 8356 | child_die = die->child; |
c906108c SS |
8357 | while (child_die && child_die->tag) |
8358 | { | |
8359 | if (child_die->tag == DW_TAG_formal_parameter) | |
8360 | { | |
3ce3b1ba PA |
8361 | struct type *arg_type; |
8362 | ||
8363 | /* DWARF version 2 has no clean way to discern C++ | |
8364 | static and non-static member functions. G++ helps | |
8365 | GDB by marking the first parameter for non-static | |
8366 | member functions (which is the this pointer) as | |
8367 | artificial. We pass this information to | |
8368 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
8369 | ||
8370 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
8371 | 4.5 does not yet generate. */ | |
e142c38c | 8372 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
8373 | if (attr) |
8374 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
8375 | else | |
418835cc KS |
8376 | { |
8377 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
8378 | ||
8379 | /* GCC/43521: In java, the formal parameter | |
8380 | "this" is sometimes not marked with DW_AT_artificial. */ | |
8381 | if (cu->language == language_java) | |
8382 | { | |
8383 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 8384 | |
418835cc KS |
8385 | if (name && !strcmp (name, "this")) |
8386 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
8387 | } | |
8388 | } | |
3ce3b1ba PA |
8389 | arg_type = die_type (child_die, cu); |
8390 | ||
8391 | /* RealView does not mark THIS as const, which the testsuite | |
8392 | expects. GCC marks THIS as const in method definitions, | |
8393 | but not in the class specifications (GCC PR 43053). */ | |
8394 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
8395 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
8396 | { | |
8397 | int is_this = 0; | |
8398 | struct dwarf2_cu *arg_cu = cu; | |
8399 | const char *name = dwarf2_name (child_die, cu); | |
8400 | ||
8401 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
8402 | if (attr) | |
8403 | { | |
8404 | /* If the compiler emits this, use it. */ | |
8405 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
8406 | is_this = 1; | |
8407 | } | |
8408 | else if (name && strcmp (name, "this") == 0) | |
8409 | /* Function definitions will have the argument names. */ | |
8410 | is_this = 1; | |
8411 | else if (name == NULL && iparams == 0) | |
8412 | /* Declarations may not have the names, so like | |
8413 | elsewhere in GDB, assume an artificial first | |
8414 | argument is "this". */ | |
8415 | is_this = 1; | |
8416 | ||
8417 | if (is_this) | |
8418 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
8419 | arg_type, 0); | |
8420 | } | |
8421 | ||
8422 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
8423 | iparams++; |
8424 | } | |
8425 | child_die = sibling_die (child_die); | |
8426 | } | |
8427 | } | |
8428 | ||
76c10ea2 | 8429 | return ftype; |
c906108c SS |
8430 | } |
8431 | ||
f792889a | 8432 | static struct type * |
e7c27a73 | 8433 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8434 | { |
e7c27a73 | 8435 | struct objfile *objfile = cu->objfile; |
0114d602 | 8436 | const char *name = NULL; |
f792889a | 8437 | struct type *this_type; |
c906108c | 8438 | |
94af9270 | 8439 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 8440 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
8441 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
8442 | TYPE_NAME (this_type) = (char *) name; | |
f792889a DJ |
8443 | set_die_type (die, this_type, cu); |
8444 | TYPE_TARGET_TYPE (this_type) = die_type (die, cu); | |
8445 | return this_type; | |
c906108c SS |
8446 | } |
8447 | ||
8448 | /* Find a representation of a given base type and install | |
8449 | it in the TYPE field of the die. */ | |
8450 | ||
f792889a | 8451 | static struct type * |
e7c27a73 | 8452 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8453 | { |
e7c27a73 | 8454 | struct objfile *objfile = cu->objfile; |
c906108c SS |
8455 | struct type *type; |
8456 | struct attribute *attr; | |
8457 | int encoding = 0, size = 0; | |
39cbfefa | 8458 | char *name; |
6ccb9162 UW |
8459 | enum type_code code = TYPE_CODE_INT; |
8460 | int type_flags = 0; | |
8461 | struct type *target_type = NULL; | |
c906108c | 8462 | |
e142c38c | 8463 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
8464 | if (attr) |
8465 | { | |
8466 | encoding = DW_UNSND (attr); | |
8467 | } | |
e142c38c | 8468 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
8469 | if (attr) |
8470 | { | |
8471 | size = DW_UNSND (attr); | |
8472 | } | |
39cbfefa | 8473 | name = dwarf2_name (die, cu); |
6ccb9162 | 8474 | if (!name) |
c906108c | 8475 | { |
6ccb9162 UW |
8476 | complaint (&symfile_complaints, |
8477 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 8478 | } |
6ccb9162 UW |
8479 | |
8480 | switch (encoding) | |
c906108c | 8481 | { |
6ccb9162 UW |
8482 | case DW_ATE_address: |
8483 | /* Turn DW_ATE_address into a void * pointer. */ | |
8484 | code = TYPE_CODE_PTR; | |
8485 | type_flags |= TYPE_FLAG_UNSIGNED; | |
8486 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
8487 | break; | |
8488 | case DW_ATE_boolean: | |
8489 | code = TYPE_CODE_BOOL; | |
8490 | type_flags |= TYPE_FLAG_UNSIGNED; | |
8491 | break; | |
8492 | case DW_ATE_complex_float: | |
8493 | code = TYPE_CODE_COMPLEX; | |
8494 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
8495 | break; | |
8496 | case DW_ATE_decimal_float: | |
8497 | code = TYPE_CODE_DECFLOAT; | |
8498 | break; | |
8499 | case DW_ATE_float: | |
8500 | code = TYPE_CODE_FLT; | |
8501 | break; | |
8502 | case DW_ATE_signed: | |
8503 | break; | |
8504 | case DW_ATE_unsigned: | |
8505 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
8506 | if (cu->language == language_fortran |
8507 | && name | |
8508 | && strncmp (name, "character(", sizeof ("character(") - 1) == 0) | |
8509 | code = TYPE_CODE_CHAR; | |
6ccb9162 UW |
8510 | break; |
8511 | case DW_ATE_signed_char: | |
6e70227d | 8512 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
8513 | || cu->language == language_pascal |
8514 | || cu->language == language_fortran) | |
6ccb9162 UW |
8515 | code = TYPE_CODE_CHAR; |
8516 | break; | |
8517 | case DW_ATE_unsigned_char: | |
868a0084 | 8518 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
8519 | || cu->language == language_pascal |
8520 | || cu->language == language_fortran) | |
6ccb9162 UW |
8521 | code = TYPE_CODE_CHAR; |
8522 | type_flags |= TYPE_FLAG_UNSIGNED; | |
8523 | break; | |
75079b2b TT |
8524 | case DW_ATE_UTF: |
8525 | /* We just treat this as an integer and then recognize the | |
8526 | type by name elsewhere. */ | |
8527 | break; | |
8528 | ||
6ccb9162 UW |
8529 | default: |
8530 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
8531 | dwarf_type_encoding_name (encoding)); | |
8532 | break; | |
c906108c | 8533 | } |
6ccb9162 | 8534 | |
0114d602 DJ |
8535 | type = init_type (code, size, type_flags, NULL, objfile); |
8536 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
8537 | TYPE_TARGET_TYPE (type) = target_type; |
8538 | ||
0114d602 | 8539 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 8540 | TYPE_NOSIGN (type) = 1; |
0114d602 | 8541 | |
f792889a | 8542 | return set_die_type (die, type, cu); |
c906108c SS |
8543 | } |
8544 | ||
a02abb62 JB |
8545 | /* Read the given DW_AT_subrange DIE. */ |
8546 | ||
f792889a | 8547 | static struct type * |
a02abb62 JB |
8548 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
8549 | { | |
8550 | struct type *base_type; | |
8551 | struct type *range_type; | |
8552 | struct attribute *attr; | |
43bbcdc2 PH |
8553 | LONGEST low = 0; |
8554 | LONGEST high = -1; | |
39cbfefa | 8555 | char *name; |
43bbcdc2 | 8556 | LONGEST negative_mask; |
e77813c8 | 8557 | |
a02abb62 | 8558 | base_type = die_type (die, cu); |
953ac07e JK |
8559 | /* Preserve BASE_TYPE's original type, just set its LENGTH. */ |
8560 | check_typedef (base_type); | |
a02abb62 | 8561 | |
7e314c57 JK |
8562 | /* The die_type call above may have already set the type for this DIE. */ |
8563 | range_type = get_die_type (die, cu); | |
8564 | if (range_type) | |
8565 | return range_type; | |
8566 | ||
e142c38c | 8567 | if (cu->language == language_fortran) |
6e70227d | 8568 | { |
a02abb62 JB |
8569 | /* FORTRAN implies a lower bound of 1, if not given. */ |
8570 | low = 1; | |
8571 | } | |
8572 | ||
dd5e6932 DJ |
8573 | /* FIXME: For variable sized arrays either of these could be |
8574 | a variable rather than a constant value. We'll allow it, | |
8575 | but we don't know how to handle it. */ | |
e142c38c | 8576 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
8577 | if (attr) |
8578 | low = dwarf2_get_attr_constant_value (attr, 0); | |
8579 | ||
e142c38c | 8580 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 8581 | if (attr) |
6e70227d | 8582 | { |
d48323d8 | 8583 | if (attr_form_is_block (attr) || is_ref_attr (attr)) |
a02abb62 JB |
8584 | { |
8585 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 8586 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
8587 | FIXME: GDB does not yet know how to handle dynamic |
8588 | arrays properly, treat them as arrays with unspecified | |
8589 | length for now. | |
8590 | ||
8591 | FIXME: jimb/2003-09-22: GDB does not really know | |
8592 | how to handle arrays of unspecified length | |
8593 | either; we just represent them as zero-length | |
8594 | arrays. Choose an appropriate upper bound given | |
8595 | the lower bound we've computed above. */ | |
8596 | high = low - 1; | |
8597 | } | |
8598 | else | |
8599 | high = dwarf2_get_attr_constant_value (attr, 1); | |
8600 | } | |
e77813c8 PM |
8601 | else |
8602 | { | |
8603 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
8604 | if (attr) | |
8605 | { | |
8606 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
8607 | high = low + count - 1; | |
8608 | } | |
c2ff108b JK |
8609 | else |
8610 | { | |
8611 | /* Unspecified array length. */ | |
8612 | high = low - 1; | |
8613 | } | |
e77813c8 PM |
8614 | } |
8615 | ||
8616 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
8617 | without specifying a base type. | |
8618 | In that case, the base type must be set to the type of | |
8619 | the lower bound, upper bound or count, in that order, if any of these | |
8620 | three attributes references an object that has a type. | |
8621 | If no base type is found, the Dwarf-2 specifications say that | |
8622 | a signed integer type of size equal to the size of an address should | |
8623 | be used. | |
8624 | For the following C code: `extern char gdb_int [];' | |
8625 | GCC produces an empty range DIE. | |
8626 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 8627 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
8628 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
8629 | { | |
8630 | struct objfile *objfile = cu->objfile; | |
8631 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8632 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
8633 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
8634 | ||
8635 | /* Test "int", "long int", and "long long int" objfile types, | |
8636 | and select the first one having a size above or equal to the | |
8637 | architecture address size. */ | |
8638 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
8639 | base_type = int_type; | |
8640 | else | |
8641 | { | |
8642 | int_type = objfile_type (objfile)->builtin_long; | |
8643 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
8644 | base_type = int_type; | |
8645 | else | |
8646 | { | |
8647 | int_type = objfile_type (objfile)->builtin_long_long; | |
8648 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
8649 | base_type = int_type; | |
8650 | } | |
8651 | } | |
8652 | } | |
a02abb62 | 8653 | |
6e70227d | 8654 | negative_mask = |
43bbcdc2 PH |
8655 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
8656 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
8657 | low |= negative_mask; | |
8658 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
8659 | high |= negative_mask; | |
8660 | ||
a02abb62 JB |
8661 | range_type = create_range_type (NULL, base_type, low, high); |
8662 | ||
bbb0eef6 JK |
8663 | /* Mark arrays with dynamic length at least as an array of unspecified |
8664 | length. GDB could check the boundary but before it gets implemented at | |
8665 | least allow accessing the array elements. */ | |
d48323d8 | 8666 | if (attr && attr_form_is_block (attr)) |
bbb0eef6 JK |
8667 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; |
8668 | ||
c2ff108b JK |
8669 | /* Ada expects an empty array on no boundary attributes. */ |
8670 | if (attr == NULL && cu->language != language_ada) | |
8671 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
8672 | ||
39cbfefa DJ |
8673 | name = dwarf2_name (die, cu); |
8674 | if (name) | |
8675 | TYPE_NAME (range_type) = name; | |
6e70227d | 8676 | |
e142c38c | 8677 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
8678 | if (attr) |
8679 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
8680 | ||
7e314c57 JK |
8681 | set_die_type (die, range_type, cu); |
8682 | ||
8683 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
8684 | set_descriptive_type (range_type, die, cu); |
8685 | ||
7e314c57 | 8686 | return range_type; |
a02abb62 | 8687 | } |
6e70227d | 8688 | |
f792889a | 8689 | static struct type * |
81a17f79 JB |
8690 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
8691 | { | |
8692 | struct type *type; | |
81a17f79 | 8693 | |
81a17f79 JB |
8694 | /* For now, we only support the C meaning of an unspecified type: void. */ |
8695 | ||
0114d602 DJ |
8696 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
8697 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 8698 | |
f792889a | 8699 | return set_die_type (die, type, cu); |
81a17f79 | 8700 | } |
a02abb62 | 8701 | |
51545339 DJ |
8702 | /* Trivial hash function for die_info: the hash value of a DIE |
8703 | is its offset in .debug_info for this objfile. */ | |
8704 | ||
8705 | static hashval_t | |
8706 | die_hash (const void *item) | |
8707 | { | |
8708 | const struct die_info *die = item; | |
9a619af0 | 8709 | |
51545339 DJ |
8710 | return die->offset; |
8711 | } | |
8712 | ||
8713 | /* Trivial comparison function for die_info structures: two DIEs | |
8714 | are equal if they have the same offset. */ | |
8715 | ||
8716 | static int | |
8717 | die_eq (const void *item_lhs, const void *item_rhs) | |
8718 | { | |
8719 | const struct die_info *die_lhs = item_lhs; | |
8720 | const struct die_info *die_rhs = item_rhs; | |
9a619af0 | 8721 | |
51545339 DJ |
8722 | return die_lhs->offset == die_rhs->offset; |
8723 | } | |
8724 | ||
c906108c SS |
8725 | /* Read a whole compilation unit into a linked list of dies. */ |
8726 | ||
f9aca02d | 8727 | static struct die_info * |
93311388 | 8728 | read_comp_unit (gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 8729 | { |
93311388 | 8730 | struct die_reader_specs reader_specs; |
98bfdba5 | 8731 | int read_abbrevs = 0; |
1d9ec526 | 8732 | struct cleanup *back_to = NULL; |
98bfdba5 PA |
8733 | struct die_info *die; |
8734 | ||
8735 | if (cu->dwarf2_abbrevs == NULL) | |
8736 | { | |
8737 | dwarf2_read_abbrevs (cu->objfile->obfd, cu); | |
8738 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
8739 | read_abbrevs = 1; | |
8740 | } | |
93311388 | 8741 | |
348e048f | 8742 | gdb_assert (cu->die_hash == NULL); |
51545339 DJ |
8743 | cu->die_hash |
8744 | = htab_create_alloc_ex (cu->header.length / 12, | |
8745 | die_hash, | |
8746 | die_eq, | |
8747 | NULL, | |
8748 | &cu->comp_unit_obstack, | |
8749 | hashtab_obstack_allocate, | |
8750 | dummy_obstack_deallocate); | |
8751 | ||
93311388 DE |
8752 | init_cu_die_reader (&reader_specs, cu); |
8753 | ||
98bfdba5 PA |
8754 | die = read_die_and_children (&reader_specs, info_ptr, &info_ptr, NULL); |
8755 | ||
8756 | if (read_abbrevs) | |
8757 | do_cleanups (back_to); | |
8758 | ||
8759 | return die; | |
639d11d3 DC |
8760 | } |
8761 | ||
d97bc12b DE |
8762 | /* Main entry point for reading a DIE and all children. |
8763 | Read the DIE and dump it if requested. */ | |
8764 | ||
8765 | static struct die_info * | |
93311388 DE |
8766 | read_die_and_children (const struct die_reader_specs *reader, |
8767 | gdb_byte *info_ptr, | |
d97bc12b DE |
8768 | gdb_byte **new_info_ptr, |
8769 | struct die_info *parent) | |
8770 | { | |
93311388 | 8771 | struct die_info *result = read_die_and_children_1 (reader, info_ptr, |
d97bc12b DE |
8772 | new_info_ptr, parent); |
8773 | ||
8774 | if (dwarf2_die_debug) | |
8775 | { | |
348e048f DE |
8776 | fprintf_unfiltered (gdb_stdlog, |
8777 | "\nRead die from %s of %s:\n", | |
8778 | reader->buffer == dwarf2_per_objfile->info.buffer | |
8779 | ? ".debug_info" | |
8780 | : reader->buffer == dwarf2_per_objfile->types.buffer | |
8781 | ? ".debug_types" | |
8782 | : "unknown section", | |
8783 | reader->abfd->filename); | |
d97bc12b DE |
8784 | dump_die (result, dwarf2_die_debug); |
8785 | } | |
8786 | ||
8787 | return result; | |
8788 | } | |
8789 | ||
639d11d3 DC |
8790 | /* Read a single die and all its descendents. Set the die's sibling |
8791 | field to NULL; set other fields in the die correctly, and set all | |
8792 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
8793 | location of the info_ptr after reading all of those dies. PARENT | |
8794 | is the parent of the die in question. */ | |
8795 | ||
8796 | static struct die_info * | |
93311388 DE |
8797 | read_die_and_children_1 (const struct die_reader_specs *reader, |
8798 | gdb_byte *info_ptr, | |
d97bc12b DE |
8799 | gdb_byte **new_info_ptr, |
8800 | struct die_info *parent) | |
639d11d3 DC |
8801 | { |
8802 | struct die_info *die; | |
fe1b8b76 | 8803 | gdb_byte *cur_ptr; |
639d11d3 DC |
8804 | int has_children; |
8805 | ||
93311388 | 8806 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
8807 | if (die == NULL) |
8808 | { | |
8809 | *new_info_ptr = cur_ptr; | |
8810 | return NULL; | |
8811 | } | |
93311388 | 8812 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
8813 | |
8814 | if (has_children) | |
348e048f | 8815 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
8816 | else |
8817 | { | |
8818 | die->child = NULL; | |
8819 | *new_info_ptr = cur_ptr; | |
8820 | } | |
8821 | ||
8822 | die->sibling = NULL; | |
8823 | die->parent = parent; | |
8824 | return die; | |
8825 | } | |
8826 | ||
8827 | /* Read a die, all of its descendents, and all of its siblings; set | |
8828 | all of the fields of all of the dies correctly. Arguments are as | |
8829 | in read_die_and_children. */ | |
8830 | ||
8831 | static struct die_info * | |
93311388 DE |
8832 | read_die_and_siblings (const struct die_reader_specs *reader, |
8833 | gdb_byte *info_ptr, | |
fe1b8b76 | 8834 | gdb_byte **new_info_ptr, |
639d11d3 DC |
8835 | struct die_info *parent) |
8836 | { | |
8837 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 8838 | gdb_byte *cur_ptr; |
639d11d3 | 8839 | |
c906108c | 8840 | cur_ptr = info_ptr; |
639d11d3 DC |
8841 | first_die = last_sibling = NULL; |
8842 | ||
8843 | while (1) | |
c906108c | 8844 | { |
639d11d3 | 8845 | struct die_info *die |
93311388 | 8846 | = read_die_and_children_1 (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 8847 | |
1d325ec1 | 8848 | if (die == NULL) |
c906108c | 8849 | { |
639d11d3 DC |
8850 | *new_info_ptr = cur_ptr; |
8851 | return first_die; | |
c906108c | 8852 | } |
1d325ec1 DJ |
8853 | |
8854 | if (!first_die) | |
8855 | first_die = die; | |
c906108c | 8856 | else |
1d325ec1 DJ |
8857 | last_sibling->sibling = die; |
8858 | ||
8859 | last_sibling = die; | |
c906108c | 8860 | } |
c906108c SS |
8861 | } |
8862 | ||
93311388 DE |
8863 | /* Read the die from the .debug_info section buffer. Set DIEP to |
8864 | point to a newly allocated die with its information, except for its | |
8865 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
8866 | whether the die has children or not. */ | |
8867 | ||
8868 | static gdb_byte * | |
8869 | read_full_die (const struct die_reader_specs *reader, | |
8870 | struct die_info **diep, gdb_byte *info_ptr, | |
8871 | int *has_children) | |
8872 | { | |
8873 | unsigned int abbrev_number, bytes_read, i, offset; | |
8874 | struct abbrev_info *abbrev; | |
8875 | struct die_info *die; | |
8876 | struct dwarf2_cu *cu = reader->cu; | |
8877 | bfd *abfd = reader->abfd; | |
8878 | ||
8879 | offset = info_ptr - reader->buffer; | |
8880 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8881 | info_ptr += bytes_read; | |
8882 | if (!abbrev_number) | |
8883 | { | |
8884 | *diep = NULL; | |
8885 | *has_children = 0; | |
8886 | return info_ptr; | |
8887 | } | |
8888 | ||
8889 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
8890 | if (!abbrev) | |
348e048f DE |
8891 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
8892 | abbrev_number, | |
8893 | bfd_get_filename (abfd)); | |
8894 | ||
93311388 DE |
8895 | die = dwarf_alloc_die (cu, abbrev->num_attrs); |
8896 | die->offset = offset; | |
8897 | die->tag = abbrev->tag; | |
8898 | die->abbrev = abbrev_number; | |
8899 | ||
8900 | die->num_attrs = abbrev->num_attrs; | |
8901 | ||
8902 | for (i = 0; i < abbrev->num_attrs; ++i) | |
8903 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
8904 | abfd, info_ptr, cu); | |
8905 | ||
8906 | *diep = die; | |
8907 | *has_children = abbrev->has_children; | |
8908 | return info_ptr; | |
8909 | } | |
8910 | ||
c906108c SS |
8911 | /* In DWARF version 2, the description of the debugging information is |
8912 | stored in a separate .debug_abbrev section. Before we read any | |
8913 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
8914 | in a hash table. This function also sets flags in CU describing |
8915 | the data found in the abbrev table. */ | |
c906108c SS |
8916 | |
8917 | static void | |
e7c27a73 | 8918 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 8919 | { |
e7c27a73 | 8920 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 8921 | gdb_byte *abbrev_ptr; |
c906108c SS |
8922 | struct abbrev_info *cur_abbrev; |
8923 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
8924 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
8925 | struct attr_abbrev *cur_attrs; |
8926 | unsigned int allocated_attrs; | |
c906108c | 8927 | |
0963b4bd | 8928 | /* Initialize dwarf2 abbrevs. */ |
f3dd6933 DJ |
8929 | obstack_init (&cu->abbrev_obstack); |
8930 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
8931 | (ABBREV_HASH_SIZE | |
8932 | * sizeof (struct abbrev_info *))); | |
8933 | memset (cu->dwarf2_abbrevs, 0, | |
8934 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 8935 | |
be391dca TT |
8936 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
8937 | &dwarf2_per_objfile->abbrev); | |
dce234bc | 8938 | abbrev_ptr = dwarf2_per_objfile->abbrev.buffer + cu_header->abbrev_offset; |
c906108c SS |
8939 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
8940 | abbrev_ptr += bytes_read; | |
8941 | ||
f3dd6933 DJ |
8942 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8943 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 8944 | |
0963b4bd | 8945 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
8946 | while (abbrev_number) |
8947 | { | |
f3dd6933 | 8948 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
8949 | |
8950 | /* read in abbrev header */ | |
8951 | cur_abbrev->number = abbrev_number; | |
8952 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8953 | abbrev_ptr += bytes_read; | |
8954 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
8955 | abbrev_ptr += 1; | |
8956 | ||
72bf9492 DJ |
8957 | if (cur_abbrev->tag == DW_TAG_namespace) |
8958 | cu->has_namespace_info = 1; | |
8959 | ||
c906108c SS |
8960 | /* now read in declarations */ |
8961 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8962 | abbrev_ptr += bytes_read; | |
8963 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8964 | abbrev_ptr += bytes_read; | |
8965 | while (abbrev_name) | |
8966 | { | |
f3dd6933 | 8967 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 8968 | { |
f3dd6933 DJ |
8969 | allocated_attrs += ATTR_ALLOC_CHUNK; |
8970 | cur_attrs | |
8971 | = xrealloc (cur_attrs, (allocated_attrs | |
8972 | * sizeof (struct attr_abbrev))); | |
c906108c | 8973 | } |
ae038cb0 DJ |
8974 | |
8975 | /* Record whether this compilation unit might have | |
8976 | inter-compilation-unit references. If we don't know what form | |
8977 | this attribute will have, then it might potentially be a | |
8978 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
8979 | references. */ | |
8980 | ||
8981 | if (abbrev_form == DW_FORM_ref_addr | |
8982 | || abbrev_form == DW_FORM_indirect) | |
8983 | cu->has_form_ref_addr = 1; | |
8984 | ||
f3dd6933 DJ |
8985 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
8986 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
8987 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
8988 | abbrev_ptr += bytes_read; | |
8989 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8990 | abbrev_ptr += bytes_read; | |
8991 | } | |
8992 | ||
f3dd6933 DJ |
8993 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
8994 | (cur_abbrev->num_attrs | |
8995 | * sizeof (struct attr_abbrev))); | |
8996 | memcpy (cur_abbrev->attrs, cur_attrs, | |
8997 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
8998 | ||
c906108c | 8999 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
9000 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
9001 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
9002 | |
9003 | /* Get next abbreviation. | |
9004 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
9005 | always properly terminated with an abbrev number of 0. |
9006 | Exit loop if we encounter an abbreviation which we have | |
9007 | already read (which means we are about to read the abbreviations | |
9008 | for the next compile unit) or if the end of the abbreviation | |
9009 | table is reached. */ | |
dce234bc PP |
9010 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev.buffer) |
9011 | >= dwarf2_per_objfile->abbrev.size) | |
c906108c SS |
9012 | break; |
9013 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
9014 | abbrev_ptr += bytes_read; | |
e7c27a73 | 9015 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
9016 | break; |
9017 | } | |
f3dd6933 DJ |
9018 | |
9019 | xfree (cur_attrs); | |
c906108c SS |
9020 | } |
9021 | ||
f3dd6933 | 9022 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 9023 | |
c906108c | 9024 | static void |
f3dd6933 | 9025 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 9026 | { |
f3dd6933 | 9027 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 9028 | |
f3dd6933 DJ |
9029 | obstack_free (&cu->abbrev_obstack, NULL); |
9030 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
9031 | } |
9032 | ||
9033 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
9034 | ||
9035 | static struct abbrev_info * | |
e7c27a73 | 9036 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
9037 | { |
9038 | unsigned int hash_number; | |
9039 | struct abbrev_info *abbrev; | |
9040 | ||
9041 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 9042 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
9043 | |
9044 | while (abbrev) | |
9045 | { | |
9046 | if (abbrev->number == number) | |
9047 | return abbrev; | |
9048 | else | |
9049 | abbrev = abbrev->next; | |
9050 | } | |
9051 | return NULL; | |
9052 | } | |
9053 | ||
72bf9492 DJ |
9054 | /* Returns nonzero if TAG represents a type that we might generate a partial |
9055 | symbol for. */ | |
9056 | ||
9057 | static int | |
9058 | is_type_tag_for_partial (int tag) | |
9059 | { | |
9060 | switch (tag) | |
9061 | { | |
9062 | #if 0 | |
9063 | /* Some types that would be reasonable to generate partial symbols for, | |
9064 | that we don't at present. */ | |
9065 | case DW_TAG_array_type: | |
9066 | case DW_TAG_file_type: | |
9067 | case DW_TAG_ptr_to_member_type: | |
9068 | case DW_TAG_set_type: | |
9069 | case DW_TAG_string_type: | |
9070 | case DW_TAG_subroutine_type: | |
9071 | #endif | |
9072 | case DW_TAG_base_type: | |
9073 | case DW_TAG_class_type: | |
680b30c7 | 9074 | case DW_TAG_interface_type: |
72bf9492 DJ |
9075 | case DW_TAG_enumeration_type: |
9076 | case DW_TAG_structure_type: | |
9077 | case DW_TAG_subrange_type: | |
9078 | case DW_TAG_typedef: | |
9079 | case DW_TAG_union_type: | |
9080 | return 1; | |
9081 | default: | |
9082 | return 0; | |
9083 | } | |
9084 | } | |
9085 | ||
9086 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
9087 | ||
9088 | static struct partial_die_info * | |
93311388 DE |
9089 | load_partial_dies (bfd *abfd, gdb_byte *buffer, gdb_byte *info_ptr, |
9090 | int building_psymtab, struct dwarf2_cu *cu) | |
72bf9492 DJ |
9091 | { |
9092 | struct partial_die_info *part_die; | |
9093 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
9094 | struct abbrev_info *abbrev; | |
9095 | unsigned int bytes_read; | |
5afb4e99 | 9096 | unsigned int load_all = 0; |
72bf9492 DJ |
9097 | |
9098 | int nesting_level = 1; | |
9099 | ||
9100 | parent_die = NULL; | |
9101 | last_die = NULL; | |
9102 | ||
5afb4e99 DJ |
9103 | if (cu->per_cu && cu->per_cu->load_all_dies) |
9104 | load_all = 1; | |
9105 | ||
72bf9492 DJ |
9106 | cu->partial_dies |
9107 | = htab_create_alloc_ex (cu->header.length / 12, | |
9108 | partial_die_hash, | |
9109 | partial_die_eq, | |
9110 | NULL, | |
9111 | &cu->comp_unit_obstack, | |
9112 | hashtab_obstack_allocate, | |
9113 | dummy_obstack_deallocate); | |
9114 | ||
9115 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
9116 | sizeof (struct partial_die_info)); | |
9117 | ||
9118 | while (1) | |
9119 | { | |
9120 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
9121 | ||
9122 | /* A NULL abbrev means the end of a series of children. */ | |
9123 | if (abbrev == NULL) | |
9124 | { | |
9125 | if (--nesting_level == 0) | |
9126 | { | |
9127 | /* PART_DIE was probably the last thing allocated on the | |
9128 | comp_unit_obstack, so we could call obstack_free | |
9129 | here. We don't do that because the waste is small, | |
9130 | and will be cleaned up when we're done with this | |
9131 | compilation unit. This way, we're also more robust | |
9132 | against other users of the comp_unit_obstack. */ | |
9133 | return first_die; | |
9134 | } | |
9135 | info_ptr += bytes_read; | |
9136 | last_die = parent_die; | |
9137 | parent_die = parent_die->die_parent; | |
9138 | continue; | |
9139 | } | |
9140 | ||
98bfdba5 PA |
9141 | /* Check for template arguments. We never save these; if |
9142 | they're seen, we just mark the parent, and go on our way. */ | |
9143 | if (parent_die != NULL | |
9144 | && cu->language == language_cplus | |
9145 | && (abbrev->tag == DW_TAG_template_type_param | |
9146 | || abbrev->tag == DW_TAG_template_value_param)) | |
9147 | { | |
9148 | parent_die->has_template_arguments = 1; | |
9149 | ||
9150 | if (!load_all) | |
9151 | { | |
9152 | /* We don't need a partial DIE for the template argument. */ | |
9153 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, | |
9154 | cu); | |
9155 | continue; | |
9156 | } | |
9157 | } | |
9158 | ||
9159 | /* We only recurse into subprograms looking for template arguments. | |
9160 | Skip their other children. */ | |
9161 | if (!load_all | |
9162 | && cu->language == language_cplus | |
9163 | && parent_die != NULL | |
9164 | && parent_die->tag == DW_TAG_subprogram) | |
9165 | { | |
9166 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); | |
9167 | continue; | |
9168 | } | |
9169 | ||
5afb4e99 DJ |
9170 | /* Check whether this DIE is interesting enough to save. Normally |
9171 | we would not be interested in members here, but there may be | |
9172 | later variables referencing them via DW_AT_specification (for | |
9173 | static members). */ | |
9174 | if (!load_all | |
9175 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 9176 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
9177 | && abbrev->tag != DW_TAG_enumerator |
9178 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 9179 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 9180 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 9181 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 9182 | && abbrev->tag != DW_TAG_module |
5afb4e99 | 9183 | && abbrev->tag != DW_TAG_member) |
72bf9492 DJ |
9184 | { |
9185 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 9186 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
72bf9492 DJ |
9187 | continue; |
9188 | } | |
9189 | ||
93311388 DE |
9190 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, abfd, |
9191 | buffer, info_ptr, cu); | |
72bf9492 DJ |
9192 | |
9193 | /* This two-pass algorithm for processing partial symbols has a | |
9194 | high cost in cache pressure. Thus, handle some simple cases | |
9195 | here which cover the majority of C partial symbols. DIEs | |
9196 | which neither have specification tags in them, nor could have | |
9197 | specification tags elsewhere pointing at them, can simply be | |
9198 | processed and discarded. | |
9199 | ||
9200 | This segment is also optional; scan_partial_symbols and | |
9201 | add_partial_symbol will handle these DIEs if we chain | |
9202 | them in normally. When compilers which do not emit large | |
9203 | quantities of duplicate debug information are more common, | |
9204 | this code can probably be removed. */ | |
9205 | ||
9206 | /* Any complete simple types at the top level (pretty much all | |
9207 | of them, for a language without namespaces), can be processed | |
9208 | directly. */ | |
9209 | if (parent_die == NULL | |
9210 | && part_die->has_specification == 0 | |
9211 | && part_die->is_declaration == 0 | |
d8228535 | 9212 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
9213 | || part_die->tag == DW_TAG_base_type |
9214 | || part_die->tag == DW_TAG_subrange_type)) | |
9215 | { | |
9216 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 9217 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 DJ |
9218 | VAR_DOMAIN, LOC_TYPEDEF, |
9219 | &cu->objfile->static_psymbols, | |
9220 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
93311388 | 9221 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
9222 | continue; |
9223 | } | |
9224 | ||
d8228535 JK |
9225 | /* The exception for DW_TAG_typedef with has_children above is |
9226 | a workaround of GCC PR debug/47510. In the case of this complaint | |
9227 | type_name_no_tag_or_error will error on such types later. | |
9228 | ||
9229 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
9230 | it could not find the child DIEs referenced later, this is checked | |
9231 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
9232 | ||
9233 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
9234 | complaint (&symfile_complaints, | |
9235 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
9236 | "- DIE at 0x%x [in module %s]"), | |
9237 | part_die->offset, cu->objfile->name); | |
9238 | ||
72bf9492 DJ |
9239 | /* If we're at the second level, and we're an enumerator, and |
9240 | our parent has no specification (meaning possibly lives in a | |
9241 | namespace elsewhere), then we can add the partial symbol now | |
9242 | instead of queueing it. */ | |
9243 | if (part_die->tag == DW_TAG_enumerator | |
9244 | && parent_die != NULL | |
9245 | && parent_die->die_parent == NULL | |
9246 | && parent_die->tag == DW_TAG_enumeration_type | |
9247 | && parent_die->has_specification == 0) | |
9248 | { | |
9249 | if (part_die->name == NULL) | |
3e43a32a MS |
9250 | complaint (&symfile_complaints, |
9251 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 9252 | else if (building_psymtab) |
04a679b8 | 9253 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 9254 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
9255 | (cu->language == language_cplus |
9256 | || cu->language == language_java) | |
72bf9492 DJ |
9257 | ? &cu->objfile->global_psymbols |
9258 | : &cu->objfile->static_psymbols, | |
9259 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
9260 | ||
93311388 | 9261 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
9262 | continue; |
9263 | } | |
9264 | ||
9265 | /* We'll save this DIE so link it in. */ | |
9266 | part_die->die_parent = parent_die; | |
9267 | part_die->die_sibling = NULL; | |
9268 | part_die->die_child = NULL; | |
9269 | ||
9270 | if (last_die && last_die == parent_die) | |
9271 | last_die->die_child = part_die; | |
9272 | else if (last_die) | |
9273 | last_die->die_sibling = part_die; | |
9274 | ||
9275 | last_die = part_die; | |
9276 | ||
9277 | if (first_die == NULL) | |
9278 | first_die = part_die; | |
9279 | ||
9280 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
9281 | find interesting need to be in the hash table, because we | |
9282 | also have the parent/sibling/child chains; only those that we | |
9283 | might refer to by offset later during partial symbol reading. | |
9284 | ||
9285 | For now this means things that might have be the target of a | |
9286 | DW_AT_specification, DW_AT_abstract_origin, or | |
9287 | DW_AT_extension. DW_AT_extension will refer only to | |
9288 | namespaces; DW_AT_abstract_origin refers to functions (and | |
9289 | many things under the function DIE, but we do not recurse | |
9290 | into function DIEs during partial symbol reading) and | |
9291 | possibly variables as well; DW_AT_specification refers to | |
9292 | declarations. Declarations ought to have the DW_AT_declaration | |
9293 | flag. It happens that GCC forgets to put it in sometimes, but | |
9294 | only for functions, not for types. | |
9295 | ||
9296 | Adding more things than necessary to the hash table is harmless | |
9297 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
9298 | wasted time in find_partial_die, when we reread the compilation |
9299 | unit with load_all_dies set. */ | |
72bf9492 | 9300 | |
5afb4e99 | 9301 | if (load_all |
72929c62 | 9302 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 9303 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
9304 | || abbrev->tag == DW_TAG_variable |
9305 | || abbrev->tag == DW_TAG_namespace | |
9306 | || part_die->is_declaration) | |
9307 | { | |
9308 | void **slot; | |
9309 | ||
9310 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9311 | part_die->offset, INSERT); | |
9312 | *slot = part_die; | |
9313 | } | |
9314 | ||
9315 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
9316 | sizeof (struct partial_die_info)); | |
9317 | ||
9318 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 9319 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
9320 | languages we have to, so that we can get at method physnames |
9321 | to infer fully qualified class names, for DW_AT_specification, | |
9322 | and for C++ template arguments. For C++, we also look one level | |
9323 | inside functions to find template arguments (if the name of the | |
9324 | function does not already contain the template arguments). | |
bc30ff58 JB |
9325 | |
9326 | For Ada, we need to scan the children of subprograms and lexical | |
9327 | blocks as well because Ada allows the definition of nested | |
9328 | entities that could be interesting for the debugger, such as | |
9329 | nested subprograms for instance. */ | |
72bf9492 | 9330 | if (last_die->has_children |
5afb4e99 DJ |
9331 | && (load_all |
9332 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 9333 | || last_die->tag == DW_TAG_module |
72bf9492 | 9334 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
9335 | || (cu->language == language_cplus |
9336 | && last_die->tag == DW_TAG_subprogram | |
9337 | && (last_die->name == NULL | |
9338 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
9339 | || (cu->language != language_c |
9340 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 9341 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 9342 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
9343 | || last_die->tag == DW_TAG_union_type)) |
9344 | || (cu->language == language_ada | |
9345 | && (last_die->tag == DW_TAG_subprogram | |
9346 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
9347 | { |
9348 | nesting_level++; | |
9349 | parent_die = last_die; | |
9350 | continue; | |
9351 | } | |
9352 | ||
9353 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 9354 | info_ptr = locate_pdi_sibling (last_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
9355 | |
9356 | /* Back to the top, do it again. */ | |
9357 | } | |
9358 | } | |
9359 | ||
c906108c SS |
9360 | /* Read a minimal amount of information into the minimal die structure. */ |
9361 | ||
fe1b8b76 | 9362 | static gdb_byte * |
72bf9492 DJ |
9363 | read_partial_die (struct partial_die_info *part_die, |
9364 | struct abbrev_info *abbrev, | |
9365 | unsigned int abbrev_len, bfd *abfd, | |
93311388 DE |
9366 | gdb_byte *buffer, gdb_byte *info_ptr, |
9367 | struct dwarf2_cu *cu) | |
c906108c | 9368 | { |
fa238c03 | 9369 | unsigned int i; |
c906108c | 9370 | struct attribute attr; |
c5aa993b | 9371 | int has_low_pc_attr = 0; |
c906108c SS |
9372 | int has_high_pc_attr = 0; |
9373 | ||
72bf9492 | 9374 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 9375 | |
93311388 | 9376 | part_die->offset = info_ptr - buffer; |
72bf9492 DJ |
9377 | |
9378 | info_ptr += abbrev_len; | |
9379 | ||
9380 | if (abbrev == NULL) | |
9381 | return info_ptr; | |
9382 | ||
c906108c SS |
9383 | part_die->tag = abbrev->tag; |
9384 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
9385 | |
9386 | for (i = 0; i < abbrev->num_attrs; ++i) | |
9387 | { | |
e7c27a73 | 9388 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
9389 | |
9390 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 9391 | partial symbol table. */ |
c906108c SS |
9392 | switch (attr.name) |
9393 | { | |
9394 | case DW_AT_name: | |
71c25dea TT |
9395 | switch (part_die->tag) |
9396 | { | |
9397 | case DW_TAG_compile_unit: | |
348e048f | 9398 | case DW_TAG_type_unit: |
71c25dea TT |
9399 | /* Compilation units have a DW_AT_name that is a filename, not |
9400 | a source language identifier. */ | |
9401 | case DW_TAG_enumeration_type: | |
9402 | case DW_TAG_enumerator: | |
9403 | /* These tags always have simple identifiers already; no need | |
9404 | to canonicalize them. */ | |
9405 | part_die->name = DW_STRING (&attr); | |
9406 | break; | |
9407 | default: | |
9408 | part_die->name | |
9409 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
95519e0e | 9410 | &cu->objfile->objfile_obstack); |
71c25dea TT |
9411 | break; |
9412 | } | |
c906108c | 9413 | break; |
31ef98ae | 9414 | case DW_AT_linkage_name: |
c906108c | 9415 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
9416 | /* Note that both forms of linkage name might appear. We |
9417 | assume they will be the same, and we only store the last | |
9418 | one we see. */ | |
94af9270 KS |
9419 | if (cu->language == language_ada) |
9420 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 9421 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
9422 | break; |
9423 | case DW_AT_low_pc: | |
9424 | has_low_pc_attr = 1; | |
9425 | part_die->lowpc = DW_ADDR (&attr); | |
9426 | break; | |
9427 | case DW_AT_high_pc: | |
9428 | has_high_pc_attr = 1; | |
9429 | part_die->highpc = DW_ADDR (&attr); | |
9430 | break; | |
9431 | case DW_AT_location: | |
0963b4bd | 9432 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
9433 | if (attr_form_is_block (&attr)) |
9434 | { | |
9435 | part_die->locdesc = DW_BLOCK (&attr); | |
9436 | } | |
3690dd37 | 9437 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 9438 | { |
4d3c2250 | 9439 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
9440 | } |
9441 | else | |
9442 | { | |
4d3c2250 KB |
9443 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
9444 | "partial symbol information"); | |
8e19ed76 | 9445 | } |
c906108c | 9446 | break; |
c906108c SS |
9447 | case DW_AT_external: |
9448 | part_die->is_external = DW_UNSND (&attr); | |
9449 | break; | |
9450 | case DW_AT_declaration: | |
9451 | part_die->is_declaration = DW_UNSND (&attr); | |
9452 | break; | |
9453 | case DW_AT_type: | |
9454 | part_die->has_type = 1; | |
9455 | break; | |
9456 | case DW_AT_abstract_origin: | |
9457 | case DW_AT_specification: | |
72bf9492 DJ |
9458 | case DW_AT_extension: |
9459 | part_die->has_specification = 1; | |
c764a876 | 9460 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
c906108c SS |
9461 | break; |
9462 | case DW_AT_sibling: | |
9463 | /* Ignore absolute siblings, they might point outside of | |
9464 | the current compile unit. */ | |
9465 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
9466 | complaint (&symfile_complaints, |
9467 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 9468 | else |
93311388 | 9469 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr); |
c906108c | 9470 | break; |
fa4028e9 JB |
9471 | case DW_AT_byte_size: |
9472 | part_die->has_byte_size = 1; | |
9473 | break; | |
68511cec CES |
9474 | case DW_AT_calling_convention: |
9475 | /* DWARF doesn't provide a way to identify a program's source-level | |
9476 | entry point. DW_AT_calling_convention attributes are only meant | |
9477 | to describe functions' calling conventions. | |
9478 | ||
9479 | However, because it's a necessary piece of information in | |
9480 | Fortran, and because DW_CC_program is the only piece of debugging | |
9481 | information whose definition refers to a 'main program' at all, | |
9482 | several compilers have begun marking Fortran main programs with | |
9483 | DW_CC_program --- even when those functions use the standard | |
9484 | calling conventions. | |
9485 | ||
9486 | So until DWARF specifies a way to provide this information and | |
9487 | compilers pick up the new representation, we'll support this | |
9488 | practice. */ | |
9489 | if (DW_UNSND (&attr) == DW_CC_program | |
9490 | && cu->language == language_fortran) | |
01f8c46d JK |
9491 | { |
9492 | set_main_name (part_die->name); | |
9493 | ||
9494 | /* As this DIE has a static linkage the name would be difficult | |
9495 | to look up later. */ | |
9496 | language_of_main = language_fortran; | |
9497 | } | |
68511cec | 9498 | break; |
c906108c SS |
9499 | default: |
9500 | break; | |
9501 | } | |
9502 | } | |
9503 | ||
9373cf26 JK |
9504 | if (has_low_pc_attr && has_high_pc_attr) |
9505 | { | |
9506 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
9507 | eliminate duplicate copies of functions and vtables and such. | |
9508 | The linker will arbitrarily choose one and discard the others. | |
9509 | The AT_*_pc values for such functions refer to local labels in | |
9510 | these sections. If the section from that file was discarded, the | |
9511 | labels are not in the output, so the relocs get a value of 0. | |
9512 | If this is a discarded function, mark the pc bounds as invalid, | |
9513 | so that GDB will ignore it. */ | |
9514 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
9515 | { | |
9516 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); | |
9517 | ||
9518 | complaint (&symfile_complaints, | |
9519 | _("DW_AT_low_pc %s is zero " | |
9520 | "for DIE at 0x%x [in module %s]"), | |
9521 | paddress (gdbarch, part_die->lowpc), | |
9522 | part_die->offset, cu->objfile->name); | |
9523 | } | |
9524 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
9525 | else if (part_die->lowpc >= part_die->highpc) | |
9526 | { | |
9527 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); | |
9528 | ||
9529 | complaint (&symfile_complaints, | |
9530 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
9531 | "for DIE at 0x%x [in module %s]"), | |
9532 | paddress (gdbarch, part_die->lowpc), | |
9533 | paddress (gdbarch, part_die->highpc), | |
9534 | part_die->offset, cu->objfile->name); | |
9535 | } | |
9536 | else | |
9537 | part_die->has_pc_info = 1; | |
9538 | } | |
85cbf3d3 | 9539 | |
c906108c SS |
9540 | return info_ptr; |
9541 | } | |
9542 | ||
72bf9492 DJ |
9543 | /* Find a cached partial DIE at OFFSET in CU. */ |
9544 | ||
9545 | static struct partial_die_info * | |
c764a876 | 9546 | find_partial_die_in_comp_unit (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
9547 | { |
9548 | struct partial_die_info *lookup_die = NULL; | |
9549 | struct partial_die_info part_die; | |
9550 | ||
9551 | part_die.offset = offset; | |
9552 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
9553 | ||
72bf9492 DJ |
9554 | return lookup_die; |
9555 | } | |
9556 | ||
348e048f DE |
9557 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
9558 | except in the case of .debug_types DIEs which do not reference | |
9559 | outside their CU (they do however referencing other types via | |
55f1336d | 9560 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
9561 | |
9562 | static struct partial_die_info * | |
c764a876 | 9563 | find_partial_die (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 | 9564 | { |
5afb4e99 DJ |
9565 | struct dwarf2_per_cu_data *per_cu = NULL; |
9566 | struct partial_die_info *pd = NULL; | |
72bf9492 | 9567 | |
348e048f DE |
9568 | if (cu->per_cu->from_debug_types) |
9569 | { | |
9570 | pd = find_partial_die_in_comp_unit (offset, cu); | |
9571 | if (pd != NULL) | |
9572 | return pd; | |
9573 | goto not_found; | |
9574 | } | |
9575 | ||
45452591 | 9576 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
9577 | { |
9578 | pd = find_partial_die_in_comp_unit (offset, cu); | |
9579 | if (pd != NULL) | |
9580 | return pd; | |
9581 | } | |
72bf9492 | 9582 | |
ae038cb0 DJ |
9583 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
9584 | ||
98bfdba5 PA |
9585 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
9586 | load_partial_comp_unit (per_cu, cu->objfile); | |
ae038cb0 DJ |
9587 | |
9588 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
9589 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
9590 | ||
9591 | if (pd == NULL && per_cu->load_all_dies == 0) | |
9592 | { | |
9593 | struct cleanup *back_to; | |
9594 | struct partial_die_info comp_unit_die; | |
9595 | struct abbrev_info *abbrev; | |
9596 | unsigned int bytes_read; | |
9597 | char *info_ptr; | |
9598 | ||
9599 | per_cu->load_all_dies = 1; | |
9600 | ||
9601 | /* Re-read the DIEs. */ | |
9602 | back_to = make_cleanup (null_cleanup, 0); | |
9603 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
9604 | { | |
9605 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
53d72f98 | 9606 | make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); |
5afb4e99 | 9607 | } |
dce234bc | 9608 | info_ptr = (dwarf2_per_objfile->info.buffer |
d00adf39 DE |
9609 | + per_cu->cu->header.offset |
9610 | + per_cu->cu->header.first_die_offset); | |
5afb4e99 DJ |
9611 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); |
9612 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
93311388 DE |
9613 | per_cu->cu->objfile->obfd, |
9614 | dwarf2_per_objfile->info.buffer, info_ptr, | |
5afb4e99 DJ |
9615 | per_cu->cu); |
9616 | if (comp_unit_die.has_children) | |
93311388 DE |
9617 | load_partial_dies (per_cu->cu->objfile->obfd, |
9618 | dwarf2_per_objfile->info.buffer, info_ptr, | |
9619 | 0, per_cu->cu); | |
5afb4e99 DJ |
9620 | do_cleanups (back_to); |
9621 | ||
9622 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
9623 | } | |
9624 | ||
348e048f DE |
9625 | not_found: |
9626 | ||
5afb4e99 DJ |
9627 | if (pd == NULL) |
9628 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
9629 | _("could not find partial DIE 0x%x " |
9630 | "in cache [from module %s]\n"), | |
5afb4e99 DJ |
9631 | offset, bfd_get_filename (cu->objfile->obfd)); |
9632 | return pd; | |
72bf9492 DJ |
9633 | } |
9634 | ||
abc72ce4 DE |
9635 | /* See if we can figure out if the class lives in a namespace. We do |
9636 | this by looking for a member function; its demangled name will | |
9637 | contain namespace info, if there is any. */ | |
9638 | ||
9639 | static void | |
9640 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
9641 | struct dwarf2_cu *cu) | |
9642 | { | |
9643 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
9644 | what template types look like, because the demangler | |
9645 | frequently doesn't give the same name as the debug info. We | |
9646 | could fix this by only using the demangled name to get the | |
9647 | prefix (but see comment in read_structure_type). */ | |
9648 | ||
9649 | struct partial_die_info *real_pdi; | |
9650 | struct partial_die_info *child_pdi; | |
9651 | ||
9652 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
9653 | we should not do this. We'll prepend the parent's fully qualified | |
9654 | name when we create the partial symbol. */ | |
9655 | ||
9656 | real_pdi = struct_pdi; | |
9657 | while (real_pdi->has_specification) | |
9658 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); | |
9659 | ||
9660 | if (real_pdi->die_parent != NULL) | |
9661 | return; | |
9662 | ||
9663 | for (child_pdi = struct_pdi->die_child; | |
9664 | child_pdi != NULL; | |
9665 | child_pdi = child_pdi->die_sibling) | |
9666 | { | |
9667 | if (child_pdi->tag == DW_TAG_subprogram | |
9668 | && child_pdi->linkage_name != NULL) | |
9669 | { | |
9670 | char *actual_class_name | |
9671 | = language_class_name_from_physname (cu->language_defn, | |
9672 | child_pdi->linkage_name); | |
9673 | if (actual_class_name != NULL) | |
9674 | { | |
9675 | struct_pdi->name | |
9676 | = obsavestring (actual_class_name, | |
9677 | strlen (actual_class_name), | |
9678 | &cu->objfile->objfile_obstack); | |
9679 | xfree (actual_class_name); | |
9680 | } | |
9681 | break; | |
9682 | } | |
9683 | } | |
9684 | } | |
9685 | ||
72bf9492 DJ |
9686 | /* Adjust PART_DIE before generating a symbol for it. This function |
9687 | may set the is_external flag or change the DIE's name. */ | |
9688 | ||
9689 | static void | |
9690 | fixup_partial_die (struct partial_die_info *part_die, | |
9691 | struct dwarf2_cu *cu) | |
9692 | { | |
abc72ce4 DE |
9693 | /* Once we've fixed up a die, there's no point in doing so again. |
9694 | This also avoids a memory leak if we were to call | |
9695 | guess_partial_die_structure_name multiple times. */ | |
9696 | if (part_die->fixup_called) | |
9697 | return; | |
9698 | ||
72bf9492 DJ |
9699 | /* If we found a reference attribute and the DIE has no name, try |
9700 | to find a name in the referred to DIE. */ | |
9701 | ||
9702 | if (part_die->name == NULL && part_die->has_specification) | |
9703 | { | |
9704 | struct partial_die_info *spec_die; | |
72bf9492 | 9705 | |
10b3939b | 9706 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 9707 | |
10b3939b | 9708 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
9709 | |
9710 | if (spec_die->name) | |
9711 | { | |
9712 | part_die->name = spec_die->name; | |
9713 | ||
9714 | /* Copy DW_AT_external attribute if it is set. */ | |
9715 | if (spec_die->is_external) | |
9716 | part_die->is_external = spec_die->is_external; | |
9717 | } | |
9718 | } | |
9719 | ||
9720 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
9721 | |
9722 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 9723 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 9724 | |
abc72ce4 DE |
9725 | /* If there is no parent die to provide a namespace, and there are |
9726 | children, see if we can determine the namespace from their linkage | |
9727 | name. | |
9728 | NOTE: We need to do this even if cu->has_namespace_info != 0. | |
9729 | gcc-4.5 -gdwarf-4 can drop the enclosing namespace. */ | |
9730 | if (cu->language == language_cplus | |
9731 | && dwarf2_per_objfile->types.asection != NULL | |
9732 | && part_die->die_parent == NULL | |
9733 | && part_die->has_children | |
9734 | && (part_die->tag == DW_TAG_class_type | |
9735 | || part_die->tag == DW_TAG_structure_type | |
9736 | || part_die->tag == DW_TAG_union_type)) | |
9737 | guess_partial_die_structure_name (part_die, cu); | |
9738 | ||
53832f31 TT |
9739 | /* GCC might emit a nameless struct or union that has a linkage |
9740 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
9741 | if (part_die->name == NULL | |
9742 | && (part_die->tag == DW_TAG_structure_type | |
9743 | || part_die->tag == DW_TAG_union_type | |
9744 | || part_die->tag == DW_TAG_class_type) | |
9745 | && part_die->linkage_name != NULL) | |
9746 | { | |
9747 | char *demangled; | |
9748 | ||
9749 | demangled = cplus_demangle (part_die->linkage_name, DMGL_TYPES); | |
9750 | if (demangled) | |
9751 | { | |
9752 | part_die->name = obsavestring (demangled, strlen (demangled), | |
9753 | &cu->objfile->objfile_obstack); | |
9754 | xfree (demangled); | |
9755 | } | |
9756 | } | |
9757 | ||
abc72ce4 | 9758 | part_die->fixup_called = 1; |
72bf9492 DJ |
9759 | } |
9760 | ||
a8329558 | 9761 | /* Read an attribute value described by an attribute form. */ |
c906108c | 9762 | |
fe1b8b76 | 9763 | static gdb_byte * |
a8329558 | 9764 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 9765 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 9766 | struct dwarf2_cu *cu) |
c906108c | 9767 | { |
e7c27a73 | 9768 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
9769 | unsigned int bytes_read; |
9770 | struct dwarf_block *blk; | |
9771 | ||
a8329558 KW |
9772 | attr->form = form; |
9773 | switch (form) | |
c906108c | 9774 | { |
c906108c | 9775 | case DW_FORM_ref_addr: |
ae411497 TT |
9776 | if (cu->header.version == 2) |
9777 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); | |
9778 | else | |
3e43a32a MS |
9779 | DW_ADDR (attr) = read_offset (abfd, info_ptr, |
9780 | &cu->header, &bytes_read); | |
ae411497 TT |
9781 | info_ptr += bytes_read; |
9782 | break; | |
9783 | case DW_FORM_addr: | |
e7c27a73 | 9784 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 9785 | info_ptr += bytes_read; |
c906108c SS |
9786 | break; |
9787 | case DW_FORM_block2: | |
7b5a2f43 | 9788 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9789 | blk->size = read_2_bytes (abfd, info_ptr); |
9790 | info_ptr += 2; | |
9791 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9792 | info_ptr += blk->size; | |
9793 | DW_BLOCK (attr) = blk; | |
9794 | break; | |
9795 | case DW_FORM_block4: | |
7b5a2f43 | 9796 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9797 | blk->size = read_4_bytes (abfd, info_ptr); |
9798 | info_ptr += 4; | |
9799 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9800 | info_ptr += blk->size; | |
9801 | DW_BLOCK (attr) = blk; | |
9802 | break; | |
9803 | case DW_FORM_data2: | |
9804 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
9805 | info_ptr += 2; | |
9806 | break; | |
9807 | case DW_FORM_data4: | |
9808 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
9809 | info_ptr += 4; | |
9810 | break; | |
9811 | case DW_FORM_data8: | |
9812 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
9813 | info_ptr += 8; | |
9814 | break; | |
2dc7f7b3 TT |
9815 | case DW_FORM_sec_offset: |
9816 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
9817 | info_ptr += bytes_read; | |
9818 | break; | |
c906108c | 9819 | case DW_FORM_string: |
9b1c24c8 | 9820 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 9821 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
9822 | info_ptr += bytes_read; |
9823 | break; | |
4bdf3d34 JJ |
9824 | case DW_FORM_strp: |
9825 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
9826 | &bytes_read); | |
8285870a | 9827 | DW_STRING_IS_CANONICAL (attr) = 0; |
4bdf3d34 JJ |
9828 | info_ptr += bytes_read; |
9829 | break; | |
2dc7f7b3 | 9830 | case DW_FORM_exprloc: |
c906108c | 9831 | case DW_FORM_block: |
7b5a2f43 | 9832 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9833 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
9834 | info_ptr += bytes_read; | |
9835 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9836 | info_ptr += blk->size; | |
9837 | DW_BLOCK (attr) = blk; | |
9838 | break; | |
9839 | case DW_FORM_block1: | |
7b5a2f43 | 9840 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9841 | blk->size = read_1_byte (abfd, info_ptr); |
9842 | info_ptr += 1; | |
9843 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9844 | info_ptr += blk->size; | |
9845 | DW_BLOCK (attr) = blk; | |
9846 | break; | |
9847 | case DW_FORM_data1: | |
9848 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
9849 | info_ptr += 1; | |
9850 | break; | |
9851 | case DW_FORM_flag: | |
9852 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
9853 | info_ptr += 1; | |
9854 | break; | |
2dc7f7b3 TT |
9855 | case DW_FORM_flag_present: |
9856 | DW_UNSND (attr) = 1; | |
9857 | break; | |
c906108c SS |
9858 | case DW_FORM_sdata: |
9859 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
9860 | info_ptr += bytes_read; | |
9861 | break; | |
9862 | case DW_FORM_udata: | |
9863 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9864 | info_ptr += bytes_read; | |
9865 | break; | |
9866 | case DW_FORM_ref1: | |
10b3939b | 9867 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
9868 | info_ptr += 1; |
9869 | break; | |
9870 | case DW_FORM_ref2: | |
10b3939b | 9871 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
9872 | info_ptr += 2; |
9873 | break; | |
9874 | case DW_FORM_ref4: | |
10b3939b | 9875 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
9876 | info_ptr += 4; |
9877 | break; | |
613e1657 | 9878 | case DW_FORM_ref8: |
10b3939b | 9879 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
9880 | info_ptr += 8; |
9881 | break; | |
55f1336d | 9882 | case DW_FORM_ref_sig8: |
348e048f DE |
9883 | /* Convert the signature to something we can record in DW_UNSND |
9884 | for later lookup. | |
9885 | NOTE: This is NULL if the type wasn't found. */ | |
9886 | DW_SIGNATURED_TYPE (attr) = | |
9887 | lookup_signatured_type (cu->objfile, read_8_bytes (abfd, info_ptr)); | |
9888 | info_ptr += 8; | |
9889 | break; | |
c906108c | 9890 | case DW_FORM_ref_udata: |
10b3939b DJ |
9891 | DW_ADDR (attr) = (cu->header.offset |
9892 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
9893 | info_ptr += bytes_read; |
9894 | break; | |
c906108c | 9895 | case DW_FORM_indirect: |
a8329558 KW |
9896 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
9897 | info_ptr += bytes_read; | |
e7c27a73 | 9898 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 9899 | break; |
c906108c | 9900 | default: |
8a3fe4f8 | 9901 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
9902 | dwarf_form_name (form), |
9903 | bfd_get_filename (abfd)); | |
c906108c | 9904 | } |
28e94949 JB |
9905 | |
9906 | /* We have seen instances where the compiler tried to emit a byte | |
9907 | size attribute of -1 which ended up being encoded as an unsigned | |
9908 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
9909 | an object of this size seems pretty unlikely so we can relatively | |
9910 | safely treat these cases as if the size attribute was invalid and | |
9911 | treat them as zero by default. */ | |
9912 | if (attr->name == DW_AT_byte_size | |
9913 | && form == DW_FORM_data4 | |
9914 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
9915 | { |
9916 | complaint | |
9917 | (&symfile_complaints, | |
43bbcdc2 PH |
9918 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
9919 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
9920 | DW_UNSND (attr) = 0; |
9921 | } | |
28e94949 | 9922 | |
c906108c SS |
9923 | return info_ptr; |
9924 | } | |
9925 | ||
a8329558 KW |
9926 | /* Read an attribute described by an abbreviated attribute. */ |
9927 | ||
fe1b8b76 | 9928 | static gdb_byte * |
a8329558 | 9929 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 9930 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
9931 | { |
9932 | attr->name = abbrev->name; | |
e7c27a73 | 9933 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
9934 | } |
9935 | ||
0963b4bd | 9936 | /* Read dwarf information from a buffer. */ |
c906108c SS |
9937 | |
9938 | static unsigned int | |
fe1b8b76 | 9939 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 9940 | { |
fe1b8b76 | 9941 | return bfd_get_8 (abfd, buf); |
c906108c SS |
9942 | } |
9943 | ||
9944 | static int | |
fe1b8b76 | 9945 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 9946 | { |
fe1b8b76 | 9947 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
9948 | } |
9949 | ||
9950 | static unsigned int | |
fe1b8b76 | 9951 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9952 | { |
fe1b8b76 | 9953 | return bfd_get_16 (abfd, buf); |
c906108c SS |
9954 | } |
9955 | ||
9956 | static int | |
fe1b8b76 | 9957 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9958 | { |
fe1b8b76 | 9959 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
9960 | } |
9961 | ||
9962 | static unsigned int | |
fe1b8b76 | 9963 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9964 | { |
fe1b8b76 | 9965 | return bfd_get_32 (abfd, buf); |
c906108c SS |
9966 | } |
9967 | ||
9968 | static int | |
fe1b8b76 | 9969 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9970 | { |
fe1b8b76 | 9971 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
9972 | } |
9973 | ||
93311388 | 9974 | static ULONGEST |
fe1b8b76 | 9975 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9976 | { |
fe1b8b76 | 9977 | return bfd_get_64 (abfd, buf); |
c906108c SS |
9978 | } |
9979 | ||
9980 | static CORE_ADDR | |
fe1b8b76 | 9981 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 9982 | unsigned int *bytes_read) |
c906108c | 9983 | { |
e7c27a73 | 9984 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
9985 | CORE_ADDR retval = 0; |
9986 | ||
107d2387 | 9987 | if (cu_header->signed_addr_p) |
c906108c | 9988 | { |
107d2387 AC |
9989 | switch (cu_header->addr_size) |
9990 | { | |
9991 | case 2: | |
fe1b8b76 | 9992 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
9993 | break; |
9994 | case 4: | |
fe1b8b76 | 9995 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
9996 | break; |
9997 | case 8: | |
fe1b8b76 | 9998 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
9999 | break; |
10000 | default: | |
8e65ff28 | 10001 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10002 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 10003 | bfd_get_filename (abfd)); |
107d2387 AC |
10004 | } |
10005 | } | |
10006 | else | |
10007 | { | |
10008 | switch (cu_header->addr_size) | |
10009 | { | |
10010 | case 2: | |
fe1b8b76 | 10011 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
10012 | break; |
10013 | case 4: | |
fe1b8b76 | 10014 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
10015 | break; |
10016 | case 8: | |
fe1b8b76 | 10017 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
10018 | break; |
10019 | default: | |
8e65ff28 | 10020 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
10021 | _("read_address: bad switch, " |
10022 | "unsigned [in module %s]"), | |
659b0389 | 10023 | bfd_get_filename (abfd)); |
107d2387 | 10024 | } |
c906108c | 10025 | } |
64367e0a | 10026 | |
107d2387 AC |
10027 | *bytes_read = cu_header->addr_size; |
10028 | return retval; | |
c906108c SS |
10029 | } |
10030 | ||
f7ef9339 | 10031 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
10032 | specification allows the initial length to take up either 4 bytes |
10033 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
10034 | bytes describe the length and all offsets will be 8 bytes in length | |
10035 | instead of 4. | |
10036 | ||
f7ef9339 KB |
10037 | An older, non-standard 64-bit format is also handled by this |
10038 | function. The older format in question stores the initial length | |
10039 | as an 8-byte quantity without an escape value. Lengths greater | |
10040 | than 2^32 aren't very common which means that the initial 4 bytes | |
10041 | is almost always zero. Since a length value of zero doesn't make | |
10042 | sense for the 32-bit format, this initial zero can be considered to | |
10043 | be an escape value which indicates the presence of the older 64-bit | |
10044 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
10045 | greater than 4GB. If it becomes necessary to handle lengths |
10046 | somewhat larger than 4GB, we could allow other small values (such | |
10047 | as the non-sensical values of 1, 2, and 3) to also be used as | |
10048 | escape values indicating the presence of the old format. | |
f7ef9339 | 10049 | |
917c78fc MK |
10050 | The value returned via bytes_read should be used to increment the |
10051 | relevant pointer after calling read_initial_length(). | |
c764a876 | 10052 | |
613e1657 KB |
10053 | [ Note: read_initial_length() and read_offset() are based on the |
10054 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 10055 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
10056 | from: |
10057 | ||
f7ef9339 | 10058 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 10059 | |
613e1657 KB |
10060 | This document is only a draft and is subject to change. (So beware.) |
10061 | ||
f7ef9339 | 10062 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
10063 | determined empirically by examining 64-bit ELF files produced by |
10064 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
10065 | |
10066 | - Kevin, July 16, 2002 | |
613e1657 KB |
10067 | ] */ |
10068 | ||
10069 | static LONGEST | |
c764a876 | 10070 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 10071 | { |
fe1b8b76 | 10072 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 10073 | |
dd373385 | 10074 | if (length == 0xffffffff) |
613e1657 | 10075 | { |
fe1b8b76 | 10076 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 10077 | *bytes_read = 12; |
613e1657 | 10078 | } |
dd373385 | 10079 | else if (length == 0) |
f7ef9339 | 10080 | { |
dd373385 | 10081 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 10082 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 10083 | *bytes_read = 8; |
f7ef9339 | 10084 | } |
613e1657 KB |
10085 | else |
10086 | { | |
10087 | *bytes_read = 4; | |
613e1657 KB |
10088 | } |
10089 | ||
c764a876 DE |
10090 | return length; |
10091 | } | |
dd373385 | 10092 | |
c764a876 DE |
10093 | /* Cover function for read_initial_length. |
10094 | Returns the length of the object at BUF, and stores the size of the | |
10095 | initial length in *BYTES_READ and stores the size that offsets will be in | |
10096 | *OFFSET_SIZE. | |
10097 | If the initial length size is not equivalent to that specified in | |
10098 | CU_HEADER then issue a complaint. | |
10099 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 10100 | |
c764a876 DE |
10101 | static LONGEST |
10102 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
10103 | const struct comp_unit_head *cu_header, | |
10104 | unsigned int *bytes_read, | |
10105 | unsigned int *offset_size) | |
10106 | { | |
10107 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
10108 | ||
10109 | gdb_assert (cu_header->initial_length_size == 4 | |
10110 | || cu_header->initial_length_size == 8 | |
10111 | || cu_header->initial_length_size == 12); | |
10112 | ||
10113 | if (cu_header->initial_length_size != *bytes_read) | |
10114 | complaint (&symfile_complaints, | |
10115 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 10116 | |
c764a876 | 10117 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 10118 | return length; |
613e1657 KB |
10119 | } |
10120 | ||
10121 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 10122 | given by cu_header->offset_size. */ |
613e1657 KB |
10123 | |
10124 | static LONGEST | |
fe1b8b76 | 10125 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 10126 | unsigned int *bytes_read) |
c764a876 DE |
10127 | { |
10128 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 10129 | |
c764a876 DE |
10130 | *bytes_read = cu_header->offset_size; |
10131 | return offset; | |
10132 | } | |
10133 | ||
10134 | /* Read an offset from the data stream. */ | |
10135 | ||
10136 | static LONGEST | |
10137 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
10138 | { |
10139 | LONGEST retval = 0; | |
10140 | ||
c764a876 | 10141 | switch (offset_size) |
613e1657 KB |
10142 | { |
10143 | case 4: | |
fe1b8b76 | 10144 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
10145 | break; |
10146 | case 8: | |
fe1b8b76 | 10147 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
10148 | break; |
10149 | default: | |
8e65ff28 | 10150 | internal_error (__FILE__, __LINE__, |
c764a876 | 10151 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 10152 | bfd_get_filename (abfd)); |
613e1657 KB |
10153 | } |
10154 | ||
917c78fc | 10155 | return retval; |
613e1657 KB |
10156 | } |
10157 | ||
fe1b8b76 JB |
10158 | static gdb_byte * |
10159 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
10160 | { |
10161 | /* If the size of a host char is 8 bits, we can return a pointer | |
10162 | to the buffer, otherwise we have to copy the data to a buffer | |
10163 | allocated on the temporary obstack. */ | |
4bdf3d34 | 10164 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 10165 | return buf; |
c906108c SS |
10166 | } |
10167 | ||
10168 | static char * | |
9b1c24c8 | 10169 | read_direct_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
10170 | { |
10171 | /* If the size of a host char is 8 bits, we can return a pointer | |
10172 | to the string, otherwise we have to copy the string to a buffer | |
10173 | allocated on the temporary obstack. */ | |
4bdf3d34 | 10174 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
10175 | if (*buf == '\0') |
10176 | { | |
10177 | *bytes_read_ptr = 1; | |
10178 | return NULL; | |
10179 | } | |
fe1b8b76 JB |
10180 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
10181 | return (char *) buf; | |
4bdf3d34 JJ |
10182 | } |
10183 | ||
10184 | static char * | |
fe1b8b76 | 10185 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
10186 | const struct comp_unit_head *cu_header, |
10187 | unsigned int *bytes_read_ptr) | |
10188 | { | |
c764a876 | 10189 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); |
c906108c | 10190 | |
be391dca | 10191 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 10192 | if (dwarf2_per_objfile->str.buffer == NULL) |
c906108c | 10193 | { |
8a3fe4f8 | 10194 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 10195 | bfd_get_filename (abfd)); |
4bdf3d34 | 10196 | return NULL; |
c906108c | 10197 | } |
dce234bc | 10198 | if (str_offset >= dwarf2_per_objfile->str.size) |
c906108c | 10199 | { |
3e43a32a MS |
10200 | error (_("DW_FORM_strp pointing outside of " |
10201 | ".debug_str section [in module %s]"), | |
10202 | bfd_get_filename (abfd)); | |
c906108c SS |
10203 | return NULL; |
10204 | } | |
4bdf3d34 | 10205 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 10206 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 10207 | return NULL; |
dce234bc | 10208 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
10209 | } |
10210 | ||
ce5d95e1 | 10211 | static unsigned long |
fe1b8b76 | 10212 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 10213 | { |
ce5d95e1 JB |
10214 | unsigned long result; |
10215 | unsigned int num_read; | |
c906108c SS |
10216 | int i, shift; |
10217 | unsigned char byte; | |
10218 | ||
10219 | result = 0; | |
10220 | shift = 0; | |
10221 | num_read = 0; | |
10222 | i = 0; | |
10223 | while (1) | |
10224 | { | |
fe1b8b76 | 10225 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
10226 | buf++; |
10227 | num_read++; | |
ce5d95e1 | 10228 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
10229 | if ((byte & 128) == 0) |
10230 | { | |
10231 | break; | |
10232 | } | |
10233 | shift += 7; | |
10234 | } | |
10235 | *bytes_read_ptr = num_read; | |
10236 | return result; | |
10237 | } | |
10238 | ||
ce5d95e1 | 10239 | static long |
fe1b8b76 | 10240 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 10241 | { |
ce5d95e1 | 10242 | long result; |
77e0b926 | 10243 | int i, shift, num_read; |
c906108c SS |
10244 | unsigned char byte; |
10245 | ||
10246 | result = 0; | |
10247 | shift = 0; | |
c906108c SS |
10248 | num_read = 0; |
10249 | i = 0; | |
10250 | while (1) | |
10251 | { | |
fe1b8b76 | 10252 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
10253 | buf++; |
10254 | num_read++; | |
ce5d95e1 | 10255 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
10256 | shift += 7; |
10257 | if ((byte & 128) == 0) | |
10258 | { | |
10259 | break; | |
10260 | } | |
10261 | } | |
77e0b926 DJ |
10262 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
10263 | result |= -(((long)1) << shift); | |
c906108c SS |
10264 | *bytes_read_ptr = num_read; |
10265 | return result; | |
10266 | } | |
10267 | ||
4bb7a0a7 DJ |
10268 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
10269 | ||
fe1b8b76 JB |
10270 | static gdb_byte * |
10271 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
10272 | { |
10273 | int byte; | |
10274 | ||
10275 | while (1) | |
10276 | { | |
fe1b8b76 | 10277 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
10278 | buf++; |
10279 | if ((byte & 128) == 0) | |
10280 | return buf; | |
10281 | } | |
10282 | } | |
10283 | ||
c906108c | 10284 | static void |
e142c38c | 10285 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
10286 | { |
10287 | switch (lang) | |
10288 | { | |
10289 | case DW_LANG_C89: | |
76bee0cc | 10290 | case DW_LANG_C99: |
c906108c | 10291 | case DW_LANG_C: |
e142c38c | 10292 | cu->language = language_c; |
c906108c SS |
10293 | break; |
10294 | case DW_LANG_C_plus_plus: | |
e142c38c | 10295 | cu->language = language_cplus; |
c906108c | 10296 | break; |
6aecb9c2 JB |
10297 | case DW_LANG_D: |
10298 | cu->language = language_d; | |
10299 | break; | |
c906108c SS |
10300 | case DW_LANG_Fortran77: |
10301 | case DW_LANG_Fortran90: | |
b21b22e0 | 10302 | case DW_LANG_Fortran95: |
e142c38c | 10303 | cu->language = language_fortran; |
c906108c SS |
10304 | break; |
10305 | case DW_LANG_Mips_Assembler: | |
e142c38c | 10306 | cu->language = language_asm; |
c906108c | 10307 | break; |
bebd888e | 10308 | case DW_LANG_Java: |
e142c38c | 10309 | cu->language = language_java; |
bebd888e | 10310 | break; |
c906108c | 10311 | case DW_LANG_Ada83: |
8aaf0b47 | 10312 | case DW_LANG_Ada95: |
bc5f45f8 JB |
10313 | cu->language = language_ada; |
10314 | break; | |
72019c9c GM |
10315 | case DW_LANG_Modula2: |
10316 | cu->language = language_m2; | |
10317 | break; | |
fe8e67fd PM |
10318 | case DW_LANG_Pascal83: |
10319 | cu->language = language_pascal; | |
10320 | break; | |
22566fbd DJ |
10321 | case DW_LANG_ObjC: |
10322 | cu->language = language_objc; | |
10323 | break; | |
c906108c SS |
10324 | case DW_LANG_Cobol74: |
10325 | case DW_LANG_Cobol85: | |
c906108c | 10326 | default: |
e142c38c | 10327 | cu->language = language_minimal; |
c906108c SS |
10328 | break; |
10329 | } | |
e142c38c | 10330 | cu->language_defn = language_def (cu->language); |
c906108c SS |
10331 | } |
10332 | ||
10333 | /* Return the named attribute or NULL if not there. */ | |
10334 | ||
10335 | static struct attribute * | |
e142c38c | 10336 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
10337 | { |
10338 | unsigned int i; | |
10339 | struct attribute *spec = NULL; | |
10340 | ||
10341 | for (i = 0; i < die->num_attrs; ++i) | |
10342 | { | |
10343 | if (die->attrs[i].name == name) | |
10b3939b | 10344 | return &die->attrs[i]; |
c906108c SS |
10345 | if (die->attrs[i].name == DW_AT_specification |
10346 | || die->attrs[i].name == DW_AT_abstract_origin) | |
10347 | spec = &die->attrs[i]; | |
10348 | } | |
c906108c | 10349 | |
10b3939b | 10350 | if (spec) |
f2f0e013 DJ |
10351 | { |
10352 | die = follow_die_ref (die, spec, &cu); | |
10353 | return dwarf2_attr (die, name, cu); | |
10354 | } | |
c5aa993b | 10355 | |
c906108c SS |
10356 | return NULL; |
10357 | } | |
10358 | ||
348e048f DE |
10359 | /* Return the named attribute or NULL if not there, |
10360 | but do not follow DW_AT_specification, etc. | |
10361 | This is for use in contexts where we're reading .debug_types dies. | |
10362 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
10363 | back up the chain, and we want to go down. */ | |
10364 | ||
10365 | static struct attribute * | |
10366 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name, | |
10367 | struct dwarf2_cu *cu) | |
10368 | { | |
10369 | unsigned int i; | |
10370 | ||
10371 | for (i = 0; i < die->num_attrs; ++i) | |
10372 | if (die->attrs[i].name == name) | |
10373 | return &die->attrs[i]; | |
10374 | ||
10375 | return NULL; | |
10376 | } | |
10377 | ||
05cf31d1 JB |
10378 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
10379 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 10380 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
10381 | |
10382 | static int | |
10383 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
10384 | { | |
10385 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
10386 | ||
10387 | return (attr && DW_UNSND (attr)); | |
10388 | } | |
10389 | ||
3ca72b44 | 10390 | static int |
e142c38c | 10391 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 10392 | { |
05cf31d1 JB |
10393 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
10394 | which value is non-zero. However, we have to be careful with | |
10395 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
10396 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
10397 | end up accidently finding a declaration attribute that belongs | |
10398 | to a different DIE referenced by the specification attribute, | |
10399 | even though the given DIE does not have a declaration attribute. */ | |
10400 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
10401 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
10402 | } |
10403 | ||
63d06c5c | 10404 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 10405 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
10406 | containing the return value on output. If there is no |
10407 | specification, but there is an abstract origin, that is | |
10408 | returned. */ | |
63d06c5c DC |
10409 | |
10410 | static struct die_info * | |
f2f0e013 | 10411 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 10412 | { |
f2f0e013 DJ |
10413 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
10414 | *spec_cu); | |
63d06c5c | 10415 | |
edb3359d DJ |
10416 | if (spec_attr == NULL) |
10417 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
10418 | ||
63d06c5c DC |
10419 | if (spec_attr == NULL) |
10420 | return NULL; | |
10421 | else | |
f2f0e013 | 10422 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 10423 | } |
c906108c | 10424 | |
debd256d | 10425 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
10426 | refers to. |
10427 | NOTE: This is also used as a "cleanup" function. */ | |
10428 | ||
debd256d JB |
10429 | static void |
10430 | free_line_header (struct line_header *lh) | |
10431 | { | |
10432 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 10433 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
10434 | |
10435 | /* Remember that all the lh->file_names[i].name pointers are | |
10436 | pointers into debug_line_buffer, and don't need to be freed. */ | |
10437 | if (lh->file_names) | |
a8bc7b56 | 10438 | xfree (lh->file_names); |
debd256d JB |
10439 | |
10440 | /* Similarly for the include directory names. */ | |
10441 | if (lh->include_dirs) | |
a8bc7b56 | 10442 | xfree (lh->include_dirs); |
debd256d | 10443 | |
a8bc7b56 | 10444 | xfree (lh); |
debd256d JB |
10445 | } |
10446 | ||
debd256d | 10447 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 10448 | |
debd256d JB |
10449 | static void |
10450 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 10451 | { |
debd256d JB |
10452 | /* Grow the array if necessary. */ |
10453 | if (lh->include_dirs_size == 0) | |
c5aa993b | 10454 | { |
debd256d JB |
10455 | lh->include_dirs_size = 1; /* for testing */ |
10456 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
10457 | * sizeof (*lh->include_dirs)); | |
10458 | } | |
10459 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
10460 | { | |
10461 | lh->include_dirs_size *= 2; | |
10462 | lh->include_dirs = xrealloc (lh->include_dirs, | |
10463 | (lh->include_dirs_size | |
10464 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 10465 | } |
c906108c | 10466 | |
debd256d JB |
10467 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
10468 | } | |
6e70227d | 10469 | |
debd256d | 10470 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 10471 | |
debd256d JB |
10472 | static void |
10473 | add_file_name (struct line_header *lh, | |
10474 | char *name, | |
10475 | unsigned int dir_index, | |
10476 | unsigned int mod_time, | |
10477 | unsigned int length) | |
10478 | { | |
10479 | struct file_entry *fe; | |
10480 | ||
10481 | /* Grow the array if necessary. */ | |
10482 | if (lh->file_names_size == 0) | |
10483 | { | |
10484 | lh->file_names_size = 1; /* for testing */ | |
10485 | lh->file_names = xmalloc (lh->file_names_size | |
10486 | * sizeof (*lh->file_names)); | |
10487 | } | |
10488 | else if (lh->num_file_names >= lh->file_names_size) | |
10489 | { | |
10490 | lh->file_names_size *= 2; | |
10491 | lh->file_names = xrealloc (lh->file_names, | |
10492 | (lh->file_names_size | |
10493 | * sizeof (*lh->file_names))); | |
10494 | } | |
10495 | ||
10496 | fe = &lh->file_names[lh->num_file_names++]; | |
10497 | fe->name = name; | |
10498 | fe->dir_index = dir_index; | |
10499 | fe->mod_time = mod_time; | |
10500 | fe->length = length; | |
aaa75496 | 10501 | fe->included_p = 0; |
cb1df416 | 10502 | fe->symtab = NULL; |
debd256d | 10503 | } |
6e70227d | 10504 | |
debd256d | 10505 | /* Read the statement program header starting at OFFSET in |
6502dd73 DJ |
10506 | .debug_line, according to the endianness of ABFD. Return a pointer |
10507 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
10508 | |
10509 | NOTE: the strings in the include directory and file name tables of | |
10510 | the returned object point into debug_line_buffer, and must not be | |
10511 | freed. */ | |
ae2de4f8 | 10512 | |
debd256d JB |
10513 | static struct line_header * |
10514 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 10515 | struct dwarf2_cu *cu) |
debd256d JB |
10516 | { |
10517 | struct cleanup *back_to; | |
10518 | struct line_header *lh; | |
fe1b8b76 | 10519 | gdb_byte *line_ptr; |
c764a876 | 10520 | unsigned int bytes_read, offset_size; |
debd256d JB |
10521 | int i; |
10522 | char *cur_dir, *cur_file; | |
10523 | ||
be391dca | 10524 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->line); |
dce234bc | 10525 | if (dwarf2_per_objfile->line.buffer == NULL) |
debd256d | 10526 | { |
e2e0b3e5 | 10527 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
10528 | return 0; |
10529 | } | |
10530 | ||
a738430d MK |
10531 | /* Make sure that at least there's room for the total_length field. |
10532 | That could be 12 bytes long, but we're just going to fudge that. */ | |
dce234bc | 10533 | if (offset + 4 >= dwarf2_per_objfile->line.size) |
debd256d | 10534 | { |
4d3c2250 | 10535 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
10536 | return 0; |
10537 | } | |
10538 | ||
10539 | lh = xmalloc (sizeof (*lh)); | |
10540 | memset (lh, 0, sizeof (*lh)); | |
10541 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
10542 | (void *) lh); | |
10543 | ||
dce234bc | 10544 | line_ptr = dwarf2_per_objfile->line.buffer + offset; |
debd256d | 10545 | |
a738430d | 10546 | /* Read in the header. */ |
6e70227d | 10547 | lh->total_length = |
c764a876 DE |
10548 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
10549 | &bytes_read, &offset_size); | |
debd256d | 10550 | line_ptr += bytes_read; |
dce234bc PP |
10551 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line.buffer |
10552 | + dwarf2_per_objfile->line.size)) | |
debd256d | 10553 | { |
4d3c2250 | 10554 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
10555 | return 0; |
10556 | } | |
10557 | lh->statement_program_end = line_ptr + lh->total_length; | |
10558 | lh->version = read_2_bytes (abfd, line_ptr); | |
10559 | line_ptr += 2; | |
c764a876 DE |
10560 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
10561 | line_ptr += offset_size; | |
debd256d JB |
10562 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
10563 | line_ptr += 1; | |
2dc7f7b3 TT |
10564 | if (lh->version >= 4) |
10565 | { | |
10566 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
10567 | line_ptr += 1; | |
10568 | } | |
10569 | else | |
10570 | lh->maximum_ops_per_instruction = 1; | |
10571 | ||
10572 | if (lh->maximum_ops_per_instruction == 0) | |
10573 | { | |
10574 | lh->maximum_ops_per_instruction = 1; | |
10575 | complaint (&symfile_complaints, | |
3e43a32a MS |
10576 | _("invalid maximum_ops_per_instruction " |
10577 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
10578 | } |
10579 | ||
debd256d JB |
10580 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
10581 | line_ptr += 1; | |
10582 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
10583 | line_ptr += 1; | |
10584 | lh->line_range = read_1_byte (abfd, line_ptr); | |
10585 | line_ptr += 1; | |
10586 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
10587 | line_ptr += 1; | |
10588 | lh->standard_opcode_lengths | |
fe1b8b76 | 10589 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
10590 | |
10591 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
10592 | for (i = 1; i < lh->opcode_base; ++i) | |
10593 | { | |
10594 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
10595 | line_ptr += 1; | |
10596 | } | |
10597 | ||
a738430d | 10598 | /* Read directory table. */ |
9b1c24c8 | 10599 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
10600 | { |
10601 | line_ptr += bytes_read; | |
10602 | add_include_dir (lh, cur_dir); | |
10603 | } | |
10604 | line_ptr += bytes_read; | |
10605 | ||
a738430d | 10606 | /* Read file name table. */ |
9b1c24c8 | 10607 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
10608 | { |
10609 | unsigned int dir_index, mod_time, length; | |
10610 | ||
10611 | line_ptr += bytes_read; | |
10612 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10613 | line_ptr += bytes_read; | |
10614 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10615 | line_ptr += bytes_read; | |
10616 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10617 | line_ptr += bytes_read; | |
10618 | ||
10619 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
10620 | } | |
10621 | line_ptr += bytes_read; | |
6e70227d | 10622 | lh->statement_program_start = line_ptr; |
debd256d | 10623 | |
dce234bc PP |
10624 | if (line_ptr > (dwarf2_per_objfile->line.buffer |
10625 | + dwarf2_per_objfile->line.size)) | |
4d3c2250 | 10626 | complaint (&symfile_complaints, |
3e43a32a MS |
10627 | _("line number info header doesn't " |
10628 | "fit in `.debug_line' section")); | |
debd256d JB |
10629 | |
10630 | discard_cleanups (back_to); | |
10631 | return lh; | |
10632 | } | |
c906108c | 10633 | |
5fb290d7 DJ |
10634 | /* This function exists to work around a bug in certain compilers |
10635 | (particularly GCC 2.95), in which the first line number marker of a | |
10636 | function does not show up until after the prologue, right before | |
10637 | the second line number marker. This function shifts ADDRESS down | |
10638 | to the beginning of the function if necessary, and is called on | |
10639 | addresses passed to record_line. */ | |
10640 | ||
10641 | static CORE_ADDR | |
e142c38c | 10642 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
10643 | { |
10644 | struct function_range *fn; | |
10645 | ||
10646 | /* Find the function_range containing address. */ | |
e142c38c | 10647 | if (!cu->first_fn) |
5fb290d7 DJ |
10648 | return address; |
10649 | ||
e142c38c DJ |
10650 | if (!cu->cached_fn) |
10651 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 10652 | |
e142c38c | 10653 | fn = cu->cached_fn; |
5fb290d7 DJ |
10654 | while (fn) |
10655 | if (fn->lowpc <= address && fn->highpc > address) | |
10656 | goto found; | |
10657 | else | |
10658 | fn = fn->next; | |
10659 | ||
e142c38c DJ |
10660 | fn = cu->first_fn; |
10661 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
10662 | if (fn->lowpc <= address && fn->highpc > address) |
10663 | goto found; | |
10664 | else | |
10665 | fn = fn->next; | |
10666 | ||
10667 | return address; | |
10668 | ||
10669 | found: | |
10670 | if (fn->seen_line) | |
10671 | return address; | |
10672 | if (address != fn->lowpc) | |
4d3c2250 | 10673 | complaint (&symfile_complaints, |
e2e0b3e5 | 10674 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 10675 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
10676 | fn->seen_line = 1; |
10677 | return fn->lowpc; | |
10678 | } | |
10679 | ||
c6da4cef DE |
10680 | /* Subroutine of dwarf_decode_lines to simplify it. |
10681 | Return the file name of the psymtab for included file FILE_INDEX | |
10682 | in line header LH of PST. | |
10683 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
10684 | If space for the result is malloc'd, it will be freed by a cleanup. | |
10685 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
10686 | ||
10687 | static char * | |
10688 | psymtab_include_file_name (const struct line_header *lh, int file_index, | |
10689 | const struct partial_symtab *pst, | |
10690 | const char *comp_dir) | |
10691 | { | |
10692 | const struct file_entry fe = lh->file_names [file_index]; | |
10693 | char *include_name = fe.name; | |
10694 | char *include_name_to_compare = include_name; | |
10695 | char *dir_name = NULL; | |
72b9f47f TT |
10696 | const char *pst_filename; |
10697 | char *copied_name = NULL; | |
c6da4cef DE |
10698 | int file_is_pst; |
10699 | ||
10700 | if (fe.dir_index) | |
10701 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
10702 | ||
10703 | if (!IS_ABSOLUTE_PATH (include_name) | |
10704 | && (dir_name != NULL || comp_dir != NULL)) | |
10705 | { | |
10706 | /* Avoid creating a duplicate psymtab for PST. | |
10707 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
10708 | Before we do the comparison, however, we need to account | |
10709 | for DIR_NAME and COMP_DIR. | |
10710 | First prepend dir_name (if non-NULL). If we still don't | |
10711 | have an absolute path prepend comp_dir (if non-NULL). | |
10712 | However, the directory we record in the include-file's | |
10713 | psymtab does not contain COMP_DIR (to match the | |
10714 | corresponding symtab(s)). | |
10715 | ||
10716 | Example: | |
10717 | ||
10718 | bash$ cd /tmp | |
10719 | bash$ gcc -g ./hello.c | |
10720 | include_name = "hello.c" | |
10721 | dir_name = "." | |
10722 | DW_AT_comp_dir = comp_dir = "/tmp" | |
10723 | DW_AT_name = "./hello.c" */ | |
10724 | ||
10725 | if (dir_name != NULL) | |
10726 | { | |
10727 | include_name = concat (dir_name, SLASH_STRING, | |
10728 | include_name, (char *)NULL); | |
10729 | include_name_to_compare = include_name; | |
10730 | make_cleanup (xfree, include_name); | |
10731 | } | |
10732 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
10733 | { | |
10734 | include_name_to_compare = concat (comp_dir, SLASH_STRING, | |
10735 | include_name, (char *)NULL); | |
10736 | } | |
10737 | } | |
10738 | ||
10739 | pst_filename = pst->filename; | |
10740 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
10741 | { | |
72b9f47f TT |
10742 | copied_name = concat (pst->dirname, SLASH_STRING, |
10743 | pst_filename, (char *)NULL); | |
10744 | pst_filename = copied_name; | |
c6da4cef DE |
10745 | } |
10746 | ||
1e3fad37 | 10747 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef DE |
10748 | |
10749 | if (include_name_to_compare != include_name) | |
10750 | xfree (include_name_to_compare); | |
72b9f47f TT |
10751 | if (copied_name != NULL) |
10752 | xfree (copied_name); | |
c6da4cef DE |
10753 | |
10754 | if (file_is_pst) | |
10755 | return NULL; | |
10756 | return include_name; | |
10757 | } | |
10758 | ||
c91513d8 PP |
10759 | /* Ignore this record_line request. */ |
10760 | ||
10761 | static void | |
10762 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
10763 | { | |
10764 | return; | |
10765 | } | |
10766 | ||
aaa75496 JB |
10767 | /* Decode the Line Number Program (LNP) for the given line_header |
10768 | structure and CU. The actual information extracted and the type | |
10769 | of structures created from the LNP depends on the value of PST. | |
10770 | ||
10771 | 1. If PST is NULL, then this procedure uses the data from the program | |
10772 | to create all necessary symbol tables, and their linetables. | |
6e70227d | 10773 | |
aaa75496 JB |
10774 | 2. If PST is not NULL, this procedure reads the program to determine |
10775 | the list of files included by the unit represented by PST, and | |
c6da4cef DE |
10776 | builds all the associated partial symbol tables. |
10777 | ||
10778 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
10779 | It is used for relative paths in the line table. | |
10780 | NOTE: When processing partial symtabs (pst != NULL), | |
10781 | comp_dir == pst->dirname. | |
10782 | ||
10783 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
10784 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
10785 | symtab we don't use it in the name of the psymtabs we create. | |
10786 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
10787 | A good testcase for this is mb-inline.exp. */ | |
debd256d | 10788 | |
c906108c | 10789 | static void |
72b9f47f | 10790 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, bfd *abfd, |
aaa75496 | 10791 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 10792 | { |
a8c50c1f | 10793 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 10794 | gdb_byte *line_end; |
a8c50c1f | 10795 | unsigned int bytes_read, extended_len; |
c906108c | 10796 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
10797 | CORE_ADDR baseaddr; |
10798 | struct objfile *objfile = cu->objfile; | |
fbf65064 | 10799 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 10800 | const int decode_for_pst_p = (pst != NULL); |
cb1df416 | 10801 | struct subfile *last_subfile = NULL, *first_subfile = current_subfile; |
c91513d8 PP |
10802 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
10803 | = record_line; | |
e142c38c DJ |
10804 | |
10805 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 10806 | |
debd256d JB |
10807 | line_ptr = lh->statement_program_start; |
10808 | line_end = lh->statement_program_end; | |
c906108c SS |
10809 | |
10810 | /* Read the statement sequences until there's nothing left. */ | |
10811 | while (line_ptr < line_end) | |
10812 | { | |
10813 | /* state machine registers */ | |
10814 | CORE_ADDR address = 0; | |
10815 | unsigned int file = 1; | |
10816 | unsigned int line = 1; | |
10817 | unsigned int column = 0; | |
debd256d | 10818 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
10819 | int basic_block = 0; |
10820 | int end_sequence = 0; | |
fbf65064 | 10821 | CORE_ADDR addr; |
2dc7f7b3 | 10822 | unsigned char op_index = 0; |
c906108c | 10823 | |
aaa75496 | 10824 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 10825 | { |
aaa75496 | 10826 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
10827 | /* lh->include_dirs and lh->file_names are 0-based, but the |
10828 | directory and file name numbers in the statement program | |
10829 | are 1-based. */ | |
10830 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 10831 | char *dir = NULL; |
a738430d | 10832 | |
debd256d JB |
10833 | if (fe->dir_index) |
10834 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
10835 | |
10836 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
10837 | } |
10838 | ||
a738430d | 10839 | /* Decode the table. */ |
c5aa993b | 10840 | while (!end_sequence) |
c906108c SS |
10841 | { |
10842 | op_code = read_1_byte (abfd, line_ptr); | |
10843 | line_ptr += 1; | |
59205f5a JB |
10844 | if (line_ptr > line_end) |
10845 | { | |
10846 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
10847 | break; | |
10848 | } | |
9aa1fe7e | 10849 | |
debd256d | 10850 | if (op_code >= lh->opcode_base) |
6e70227d | 10851 | { |
a738430d | 10852 | /* Special operand. */ |
debd256d | 10853 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
10854 | address += (((op_index + (adj_opcode / lh->line_range)) |
10855 | / lh->maximum_ops_per_instruction) | |
10856 | * lh->minimum_instruction_length); | |
10857 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
10858 | % lh->maximum_ops_per_instruction); | |
debd256d | 10859 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 10860 | if (lh->num_file_names < file || file == 0) |
25e43795 | 10861 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
10862 | /* For now we ignore lines not starting on an |
10863 | instruction boundary. */ | |
10864 | else if (op_index == 0) | |
25e43795 DJ |
10865 | { |
10866 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 10867 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
10868 | { |
10869 | if (last_subfile != current_subfile) | |
10870 | { | |
10871 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
10872 | if (last_subfile) | |
c91513d8 | 10873 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
10874 | last_subfile = current_subfile; |
10875 | } | |
25e43795 | 10876 | /* Append row to matrix using current values. */ |
fbf65064 UW |
10877 | addr = check_cu_functions (address, cu); |
10878 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
c91513d8 | 10879 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 10880 | } |
25e43795 | 10881 | } |
ca5f395d | 10882 | basic_block = 0; |
9aa1fe7e GK |
10883 | } |
10884 | else switch (op_code) | |
c906108c SS |
10885 | { |
10886 | case DW_LNS_extended_op: | |
3e43a32a MS |
10887 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
10888 | &bytes_read); | |
473b7be6 | 10889 | line_ptr += bytes_read; |
a8c50c1f | 10890 | extended_end = line_ptr + extended_len; |
c906108c SS |
10891 | extended_op = read_1_byte (abfd, line_ptr); |
10892 | line_ptr += 1; | |
10893 | switch (extended_op) | |
10894 | { | |
10895 | case DW_LNE_end_sequence: | |
c91513d8 | 10896 | p_record_line = record_line; |
c906108c | 10897 | end_sequence = 1; |
c906108c SS |
10898 | break; |
10899 | case DW_LNE_set_address: | |
e7c27a73 | 10900 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
10901 | |
10902 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
10903 | { | |
10904 | /* This line table is for a function which has been | |
10905 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
10906 | ||
10907 | long line_offset | |
10908 | = line_ptr - dwarf2_per_objfile->line.buffer; | |
10909 | ||
10910 | complaint (&symfile_complaints, | |
10911 | _(".debug_line address at offset 0x%lx is 0 " | |
10912 | "[in module %s]"), | |
10913 | line_offset, cu->objfile->name); | |
10914 | p_record_line = noop_record_line; | |
10915 | } | |
10916 | ||
2dc7f7b3 | 10917 | op_index = 0; |
107d2387 AC |
10918 | line_ptr += bytes_read; |
10919 | address += baseaddr; | |
c906108c SS |
10920 | break; |
10921 | case DW_LNE_define_file: | |
debd256d JB |
10922 | { |
10923 | char *cur_file; | |
10924 | unsigned int dir_index, mod_time, length; | |
6e70227d | 10925 | |
3e43a32a MS |
10926 | cur_file = read_direct_string (abfd, line_ptr, |
10927 | &bytes_read); | |
debd256d JB |
10928 | line_ptr += bytes_read; |
10929 | dir_index = | |
10930 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10931 | line_ptr += bytes_read; | |
10932 | mod_time = | |
10933 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10934 | line_ptr += bytes_read; | |
10935 | length = | |
10936 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10937 | line_ptr += bytes_read; | |
10938 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
10939 | } | |
c906108c | 10940 | break; |
d0c6ba3d CC |
10941 | case DW_LNE_set_discriminator: |
10942 | /* The discriminator is not interesting to the debugger; | |
10943 | just ignore it. */ | |
10944 | line_ptr = extended_end; | |
10945 | break; | |
c906108c | 10946 | default: |
4d3c2250 | 10947 | complaint (&symfile_complaints, |
e2e0b3e5 | 10948 | _("mangled .debug_line section")); |
debd256d | 10949 | return; |
c906108c | 10950 | } |
a8c50c1f DJ |
10951 | /* Make sure that we parsed the extended op correctly. If e.g. |
10952 | we expected a different address size than the producer used, | |
10953 | we may have read the wrong number of bytes. */ | |
10954 | if (line_ptr != extended_end) | |
10955 | { | |
10956 | complaint (&symfile_complaints, | |
10957 | _("mangled .debug_line section")); | |
10958 | return; | |
10959 | } | |
c906108c SS |
10960 | break; |
10961 | case DW_LNS_copy: | |
59205f5a | 10962 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
10963 | dwarf2_debug_line_missing_file_complaint (); |
10964 | else | |
366da635 | 10965 | { |
25e43795 | 10966 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 10967 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
10968 | { |
10969 | if (last_subfile != current_subfile) | |
10970 | { | |
10971 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
10972 | if (last_subfile) | |
c91513d8 | 10973 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
10974 | last_subfile = current_subfile; |
10975 | } | |
10976 | addr = check_cu_functions (address, cu); | |
10977 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
c91513d8 | 10978 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 10979 | } |
366da635 | 10980 | } |
c906108c SS |
10981 | basic_block = 0; |
10982 | break; | |
10983 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
10984 | { |
10985 | CORE_ADDR adjust | |
10986 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10987 | ||
10988 | address += (((op_index + adjust) | |
10989 | / lh->maximum_ops_per_instruction) | |
10990 | * lh->minimum_instruction_length); | |
10991 | op_index = ((op_index + adjust) | |
10992 | % lh->maximum_ops_per_instruction); | |
10993 | line_ptr += bytes_read; | |
10994 | } | |
c906108c SS |
10995 | break; |
10996 | case DW_LNS_advance_line: | |
10997 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
10998 | line_ptr += bytes_read; | |
10999 | break; | |
11000 | case DW_LNS_set_file: | |
debd256d | 11001 | { |
a738430d MK |
11002 | /* The arrays lh->include_dirs and lh->file_names are |
11003 | 0-based, but the directory and file name numbers in | |
11004 | the statement program are 1-based. */ | |
debd256d | 11005 | struct file_entry *fe; |
4f1520fb | 11006 | char *dir = NULL; |
a738430d | 11007 | |
debd256d JB |
11008 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
11009 | line_ptr += bytes_read; | |
59205f5a | 11010 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
11011 | dwarf2_debug_line_missing_file_complaint (); |
11012 | else | |
11013 | { | |
11014 | fe = &lh->file_names[file - 1]; | |
11015 | if (fe->dir_index) | |
11016 | dir = lh->include_dirs[fe->dir_index - 1]; | |
11017 | if (!decode_for_pst_p) | |
11018 | { | |
11019 | last_subfile = current_subfile; | |
11020 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
11021 | } | |
11022 | } | |
debd256d | 11023 | } |
c906108c SS |
11024 | break; |
11025 | case DW_LNS_set_column: | |
11026 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
11027 | line_ptr += bytes_read; | |
11028 | break; | |
11029 | case DW_LNS_negate_stmt: | |
11030 | is_stmt = (!is_stmt); | |
11031 | break; | |
11032 | case DW_LNS_set_basic_block: | |
11033 | basic_block = 1; | |
11034 | break; | |
c2c6d25f JM |
11035 | /* Add to the address register of the state machine the |
11036 | address increment value corresponding to special opcode | |
a738430d MK |
11037 | 255. I.e., this value is scaled by the minimum |
11038 | instruction length since special opcode 255 would have | |
b021a221 | 11039 | scaled the increment. */ |
c906108c | 11040 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
11041 | { |
11042 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
11043 | ||
11044 | address += (((op_index + adjust) | |
11045 | / lh->maximum_ops_per_instruction) | |
11046 | * lh->minimum_instruction_length); | |
11047 | op_index = ((op_index + adjust) | |
11048 | % lh->maximum_ops_per_instruction); | |
11049 | } | |
c906108c SS |
11050 | break; |
11051 | case DW_LNS_fixed_advance_pc: | |
11052 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 11053 | op_index = 0; |
c906108c SS |
11054 | line_ptr += 2; |
11055 | break; | |
9aa1fe7e | 11056 | default: |
a738430d MK |
11057 | { |
11058 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 11059 | int i; |
a738430d | 11060 | |
debd256d | 11061 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
11062 | { |
11063 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
11064 | line_ptr += bytes_read; | |
11065 | } | |
11066 | } | |
c906108c SS |
11067 | } |
11068 | } | |
59205f5a JB |
11069 | if (lh->num_file_names < file || file == 0) |
11070 | dwarf2_debug_line_missing_file_complaint (); | |
11071 | else | |
11072 | { | |
11073 | lh->file_names[file - 1].included_p = 1; | |
11074 | if (!decode_for_pst_p) | |
fbf65064 UW |
11075 | { |
11076 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 11077 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 11078 | } |
59205f5a | 11079 | } |
c906108c | 11080 | } |
aaa75496 JB |
11081 | |
11082 | if (decode_for_pst_p) | |
11083 | { | |
11084 | int file_index; | |
11085 | ||
11086 | /* Now that we're done scanning the Line Header Program, we can | |
11087 | create the psymtab of each included file. */ | |
11088 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
11089 | if (lh->file_names[file_index].included_p == 1) | |
11090 | { | |
c6da4cef DE |
11091 | char *include_name = |
11092 | psymtab_include_file_name (lh, file_index, pst, comp_dir); | |
11093 | if (include_name != NULL) | |
aaa75496 JB |
11094 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
11095 | } | |
11096 | } | |
cb1df416 DJ |
11097 | else |
11098 | { | |
11099 | /* Make sure a symtab is created for every file, even files | |
11100 | which contain only variables (i.e. no code with associated | |
11101 | line numbers). */ | |
11102 | ||
11103 | int i; | |
11104 | struct file_entry *fe; | |
11105 | ||
11106 | for (i = 0; i < lh->num_file_names; i++) | |
11107 | { | |
11108 | char *dir = NULL; | |
9a619af0 | 11109 | |
cb1df416 DJ |
11110 | fe = &lh->file_names[i]; |
11111 | if (fe->dir_index) | |
11112 | dir = lh->include_dirs[fe->dir_index - 1]; | |
11113 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
11114 | ||
11115 | /* Skip the main file; we don't need it, and it must be | |
11116 | allocated last, so that it will show up before the | |
11117 | non-primary symtabs in the objfile's symtab list. */ | |
11118 | if (current_subfile == first_subfile) | |
11119 | continue; | |
11120 | ||
11121 | if (current_subfile->symtab == NULL) | |
11122 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
11123 | cu->objfile); | |
11124 | fe->symtab = current_subfile->symtab; | |
11125 | } | |
11126 | } | |
c906108c SS |
11127 | } |
11128 | ||
11129 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
11130 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
11131 | or NULL if not known. COMP_DIR is the compilation directory for the |
11132 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
11133 | This routine tries to keep line numbers from identical absolute and |
11134 | relative file names in a common subfile. | |
11135 | ||
11136 | Using the `list' example from the GDB testsuite, which resides in | |
11137 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
11138 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
11139 | ||
c5aa993b JM |
11140 | DW_AT_name: /srcdir/list0.c |
11141 | DW_AT_comp_dir: /compdir | |
357e46e7 | 11142 | files.files[0].name: list0.h |
c5aa993b | 11143 | files.files[0].dir: /srcdir |
357e46e7 | 11144 | files.files[1].name: list0.c |
c5aa993b | 11145 | files.files[1].dir: /srcdir |
c906108c SS |
11146 | |
11147 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
11148 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
11149 | start_subfile will ensure that this happens provided that we pass the | |
11150 | concatenation of files.files[1].dir and files.files[1].name as the | |
11151 | subfile's name. */ | |
c906108c SS |
11152 | |
11153 | static void | |
3e43a32a MS |
11154 | dwarf2_start_subfile (char *filename, const char *dirname, |
11155 | const char *comp_dir) | |
c906108c | 11156 | { |
4f1520fb FR |
11157 | char *fullname; |
11158 | ||
11159 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
11160 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
11161 | second argument to start_subfile. To be consistent, we do the | |
11162 | same here. In order not to lose the line information directory, | |
11163 | we concatenate it to the filename when it makes sense. | |
11164 | Note that the Dwarf3 standard says (speaking of filenames in line | |
11165 | information): ``The directory index is ignored for file names | |
11166 | that represent full path names''. Thus ignoring dirname in the | |
11167 | `else' branch below isn't an issue. */ | |
c906108c | 11168 | |
d5166ae1 | 11169 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
11170 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
11171 | else | |
11172 | fullname = filename; | |
c906108c | 11173 | |
4f1520fb FR |
11174 | start_subfile (fullname, comp_dir); |
11175 | ||
11176 | if (fullname != filename) | |
11177 | xfree (fullname); | |
c906108c SS |
11178 | } |
11179 | ||
4c2df51b DJ |
11180 | static void |
11181 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 11182 | struct dwarf2_cu *cu) |
4c2df51b | 11183 | { |
e7c27a73 DJ |
11184 | struct objfile *objfile = cu->objfile; |
11185 | struct comp_unit_head *cu_header = &cu->header; | |
11186 | ||
4c2df51b DJ |
11187 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
11188 | code here to turn a symbol with DW_AT_external and a | |
11189 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
11190 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
11191 | with some versions of binutils) where shared libraries could have | |
11192 | relocations against symbols in their debug information - the | |
11193 | minimal symbol would have the right address, but the debug info | |
11194 | would not. It's no longer necessary, because we will explicitly | |
11195 | apply relocations when we read in the debug information now. */ | |
11196 | ||
11197 | /* A DW_AT_location attribute with no contents indicates that a | |
11198 | variable has been optimized away. */ | |
11199 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
11200 | { | |
11201 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
11202 | return; | |
11203 | } | |
11204 | ||
11205 | /* Handle one degenerate form of location expression specially, to | |
11206 | preserve GDB's previous behavior when section offsets are | |
11207 | specified. If this is just a DW_OP_addr then mark this symbol | |
11208 | as LOC_STATIC. */ | |
11209 | ||
11210 | if (attr_form_is_block (attr) | |
11211 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
11212 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
11213 | { | |
891d2f0b | 11214 | unsigned int dummy; |
4c2df51b DJ |
11215 | |
11216 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 11217 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
907fc202 | 11218 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
11219 | fixup_symbol_section (sym, objfile); |
11220 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
11221 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
11222 | return; |
11223 | } | |
11224 | ||
11225 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
11226 | expression evaluator, and use LOC_COMPUTED only when necessary | |
11227 | (i.e. when the value of a register or memory location is | |
11228 | referenced, or a thread-local block, etc.). Then again, it might | |
11229 | not be worthwhile. I'm assuming that it isn't unless performance | |
11230 | or memory numbers show me otherwise. */ | |
11231 | ||
e7c27a73 | 11232 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b | 11233 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
8be455d7 JK |
11234 | |
11235 | if (SYMBOL_COMPUTED_OPS (sym) == &dwarf2_loclist_funcs) | |
11236 | cu->has_loclist = 1; | |
4c2df51b DJ |
11237 | } |
11238 | ||
c906108c SS |
11239 | /* Given a pointer to a DWARF information entry, figure out if we need |
11240 | to make a symbol table entry for it, and if so, create a new entry | |
11241 | and return a pointer to it. | |
11242 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
11243 | used the passed type. |
11244 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
11245 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
11246 | |
11247 | static struct symbol * | |
34eaf542 TT |
11248 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
11249 | struct symbol *space) | |
c906108c | 11250 | { |
e7c27a73 | 11251 | struct objfile *objfile = cu->objfile; |
c906108c SS |
11252 | struct symbol *sym = NULL; |
11253 | char *name; | |
11254 | struct attribute *attr = NULL; | |
11255 | struct attribute *attr2 = NULL; | |
e142c38c | 11256 | CORE_ADDR baseaddr; |
e37fd15a SW |
11257 | struct pending **list_to_add = NULL; |
11258 | ||
edb3359d | 11259 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
11260 | |
11261 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 11262 | |
94af9270 | 11263 | name = dwarf2_name (die, cu); |
c906108c SS |
11264 | if (name) |
11265 | { | |
94af9270 | 11266 | const char *linkagename; |
34eaf542 | 11267 | int suppress_add = 0; |
94af9270 | 11268 | |
34eaf542 TT |
11269 | if (space) |
11270 | sym = space; | |
11271 | else | |
11272 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
c906108c | 11273 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
11274 | |
11275 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
33e5013e | 11276 | SYMBOL_SET_LANGUAGE (sym, cu->language); |
94af9270 KS |
11277 | linkagename = dwarf2_physname (name, die, cu); |
11278 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 11279 | |
f55ee35c JK |
11280 | /* Fortran does not have mangling standard and the mangling does differ |
11281 | between gfortran, iFort etc. */ | |
11282 | if (cu->language == language_fortran | |
b250c185 | 11283 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d SW |
11284 | symbol_set_demangled_name (&(sym->ginfo), |
11285 | (char *) dwarf2_full_name (name, die, cu), | |
11286 | NULL); | |
f55ee35c | 11287 | |
c906108c | 11288 | /* Default assumptions. |
c5aa993b | 11289 | Use the passed type or decode it from the die. */ |
176620f1 | 11290 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 11291 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
11292 | if (type != NULL) |
11293 | SYMBOL_TYPE (sym) = type; | |
11294 | else | |
e7c27a73 | 11295 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
11296 | attr = dwarf2_attr (die, |
11297 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
11298 | cu); | |
c906108c SS |
11299 | if (attr) |
11300 | { | |
11301 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
11302 | } | |
cb1df416 | 11303 | |
edb3359d DJ |
11304 | attr = dwarf2_attr (die, |
11305 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
11306 | cu); | |
cb1df416 DJ |
11307 | if (attr) |
11308 | { | |
11309 | int file_index = DW_UNSND (attr); | |
9a619af0 | 11310 | |
cb1df416 DJ |
11311 | if (cu->line_header == NULL |
11312 | || file_index > cu->line_header->num_file_names) | |
11313 | complaint (&symfile_complaints, | |
11314 | _("file index out of range")); | |
1c3d648d | 11315 | else if (file_index > 0) |
cb1df416 DJ |
11316 | { |
11317 | struct file_entry *fe; | |
9a619af0 | 11318 | |
cb1df416 DJ |
11319 | fe = &cu->line_header->file_names[file_index - 1]; |
11320 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
11321 | } | |
11322 | } | |
11323 | ||
c906108c SS |
11324 | switch (die->tag) |
11325 | { | |
11326 | case DW_TAG_label: | |
e142c38c | 11327 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
11328 | if (attr) |
11329 | { | |
11330 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
11331 | } | |
0f5238ed TT |
11332 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
11333 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
c906108c | 11334 | SYMBOL_CLASS (sym) = LOC_LABEL; |
0f5238ed | 11335 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
11336 | break; |
11337 | case DW_TAG_subprogram: | |
11338 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
11339 | finish_block. */ | |
11340 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 11341 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
11342 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
11343 | || cu->language == language_ada) | |
c906108c | 11344 | { |
2cfa0c8d JB |
11345 | /* Subprograms marked external are stored as a global symbol. |
11346 | Ada subprograms, whether marked external or not, are always | |
11347 | stored as a global symbol, because we want to be able to | |
11348 | access them globally. For instance, we want to be able | |
11349 | to break on a nested subprogram without having to | |
11350 | specify the context. */ | |
e37fd15a | 11351 | list_to_add = &global_symbols; |
c906108c SS |
11352 | } |
11353 | else | |
11354 | { | |
e37fd15a | 11355 | list_to_add = cu->list_in_scope; |
c906108c SS |
11356 | } |
11357 | break; | |
edb3359d DJ |
11358 | case DW_TAG_inlined_subroutine: |
11359 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
11360 | finish_block. */ | |
11361 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
11362 | SYMBOL_INLINED (sym) = 1; | |
11363 | /* Do not add the symbol to any lists. It will be found via | |
11364 | BLOCK_FUNCTION from the blockvector. */ | |
11365 | break; | |
34eaf542 TT |
11366 | case DW_TAG_template_value_param: |
11367 | suppress_add = 1; | |
11368 | /* Fall through. */ | |
72929c62 | 11369 | case DW_TAG_constant: |
c906108c | 11370 | case DW_TAG_variable: |
254e6b9e | 11371 | case DW_TAG_member: |
0963b4bd MS |
11372 | /* Compilation with minimal debug info may result in |
11373 | variables with missing type entries. Change the | |
11374 | misleading `void' type to something sensible. */ | |
c906108c | 11375 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 11376 | SYMBOL_TYPE (sym) |
46bf5051 | 11377 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 11378 | |
e142c38c | 11379 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
11380 | /* In the case of DW_TAG_member, we should only be called for |
11381 | static const members. */ | |
11382 | if (die->tag == DW_TAG_member) | |
11383 | { | |
3863f96c DE |
11384 | /* dwarf2_add_field uses die_is_declaration, |
11385 | so we do the same. */ | |
254e6b9e DE |
11386 | gdb_assert (die_is_declaration (die, cu)); |
11387 | gdb_assert (attr); | |
11388 | } | |
c906108c SS |
11389 | if (attr) |
11390 | { | |
e7c27a73 | 11391 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 11392 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 11393 | if (!suppress_add) |
34eaf542 TT |
11394 | { |
11395 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 11396 | list_to_add = &global_symbols; |
34eaf542 | 11397 | else |
e37fd15a | 11398 | list_to_add = cu->list_in_scope; |
34eaf542 | 11399 | } |
c906108c SS |
11400 | break; |
11401 | } | |
e142c38c | 11402 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
11403 | if (attr) |
11404 | { | |
e7c27a73 | 11405 | var_decode_location (attr, sym, cu); |
e142c38c | 11406 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
caac4577 JG |
11407 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
11408 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
11409 | && !dwarf2_per_objfile->has_section_at_zero) | |
11410 | { | |
11411 | /* When a static variable is eliminated by the linker, | |
11412 | the corresponding debug information is not stripped | |
11413 | out, but the variable address is set to null; | |
11414 | do not add such variables into symbol table. */ | |
11415 | } | |
11416 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 11417 | { |
f55ee35c JK |
11418 | /* Workaround gfortran PR debug/40040 - it uses |
11419 | DW_AT_location for variables in -fPIC libraries which may | |
11420 | get overriden by other libraries/executable and get | |
11421 | a different address. Resolve it by the minimal symbol | |
11422 | which may come from inferior's executable using copy | |
11423 | relocation. Make this workaround only for gfortran as for | |
11424 | other compilers GDB cannot guess the minimal symbol | |
11425 | Fortran mangling kind. */ | |
11426 | if (cu->language == language_fortran && die->parent | |
11427 | && die->parent->tag == DW_TAG_module | |
11428 | && cu->producer | |
11429 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
11430 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
11431 | ||
1c809c68 TT |
11432 | /* A variable with DW_AT_external is never static, |
11433 | but it may be block-scoped. */ | |
11434 | list_to_add = (cu->list_in_scope == &file_symbols | |
11435 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 11436 | } |
c906108c | 11437 | else |
e37fd15a | 11438 | list_to_add = cu->list_in_scope; |
c906108c SS |
11439 | } |
11440 | else | |
11441 | { | |
11442 | /* We do not know the address of this symbol. | |
c5aa993b JM |
11443 | If it is an external symbol and we have type information |
11444 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
11445 | The address of the variable will then be determined from | |
11446 | the minimal symbol table whenever the variable is | |
11447 | referenced. */ | |
e142c38c | 11448 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 11449 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 11450 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 11451 | { |
0fe7935b DJ |
11452 | /* A variable with DW_AT_external is never static, but it |
11453 | may be block-scoped. */ | |
11454 | list_to_add = (cu->list_in_scope == &file_symbols | |
11455 | ? &global_symbols : cu->list_in_scope); | |
11456 | ||
c906108c | 11457 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
c906108c | 11458 | } |
442ddf59 JK |
11459 | else if (!die_is_declaration (die, cu)) |
11460 | { | |
11461 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
11462 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
11463 | if (!suppress_add) |
11464 | list_to_add = cu->list_in_scope; | |
442ddf59 | 11465 | } |
c906108c SS |
11466 | } |
11467 | break; | |
11468 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
11469 | /* If we are inside a function, mark this as an argument. If |
11470 | not, we might be looking at an argument to an inlined function | |
11471 | when we do not have enough information to show inlined frames; | |
11472 | pretend it's a local variable in that case so that the user can | |
11473 | still see it. */ | |
11474 | if (context_stack_depth > 0 | |
11475 | && context_stack[context_stack_depth - 1].name != NULL) | |
11476 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 11477 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
11478 | if (attr) |
11479 | { | |
e7c27a73 | 11480 | var_decode_location (attr, sym, cu); |
c906108c | 11481 | } |
e142c38c | 11482 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
11483 | if (attr) |
11484 | { | |
e7c27a73 | 11485 | dwarf2_const_value (attr, sym, cu); |
c906108c | 11486 | } |
f346a30d PM |
11487 | attr = dwarf2_attr (die, DW_AT_variable_parameter, cu); |
11488 | if (attr && DW_UNSND (attr)) | |
11489 | { | |
11490 | struct type *ref_type; | |
11491 | ||
11492 | ref_type = lookup_reference_type (SYMBOL_TYPE (sym)); | |
11493 | SYMBOL_TYPE (sym) = ref_type; | |
11494 | } | |
11495 | ||
e37fd15a | 11496 | list_to_add = cu->list_in_scope; |
c906108c SS |
11497 | break; |
11498 | case DW_TAG_unspecified_parameters: | |
11499 | /* From varargs functions; gdb doesn't seem to have any | |
11500 | interest in this information, so just ignore it for now. | |
11501 | (FIXME?) */ | |
11502 | break; | |
34eaf542 TT |
11503 | case DW_TAG_template_type_param: |
11504 | suppress_add = 1; | |
11505 | /* Fall through. */ | |
c906108c | 11506 | case DW_TAG_class_type: |
680b30c7 | 11507 | case DW_TAG_interface_type: |
c906108c SS |
11508 | case DW_TAG_structure_type: |
11509 | case DW_TAG_union_type: | |
72019c9c | 11510 | case DW_TAG_set_type: |
c906108c SS |
11511 | case DW_TAG_enumeration_type: |
11512 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 11513 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 11514 | |
63d06c5c | 11515 | { |
987504bb | 11516 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
11517 | really ever be static objects: otherwise, if you try |
11518 | to, say, break of a class's method and you're in a file | |
11519 | which doesn't mention that class, it won't work unless | |
11520 | the check for all static symbols in lookup_symbol_aux | |
11521 | saves you. See the OtherFileClass tests in | |
11522 | gdb.c++/namespace.exp. */ | |
11523 | ||
e37fd15a | 11524 | if (!suppress_add) |
34eaf542 | 11525 | { |
34eaf542 TT |
11526 | list_to_add = (cu->list_in_scope == &file_symbols |
11527 | && (cu->language == language_cplus | |
11528 | || cu->language == language_java) | |
11529 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 11530 | |
64382290 TT |
11531 | /* The semantics of C++ state that "struct foo { |
11532 | ... }" also defines a typedef for "foo". A Java | |
11533 | class declaration also defines a typedef for the | |
11534 | class. */ | |
11535 | if (cu->language == language_cplus | |
11536 | || cu->language == language_java | |
11537 | || cu->language == language_ada) | |
11538 | { | |
11539 | /* The symbol's name is already allocated along | |
11540 | with this objfile, so we don't need to | |
11541 | duplicate it for the type. */ | |
11542 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
11543 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
11544 | } | |
63d06c5c DC |
11545 | } |
11546 | } | |
c906108c SS |
11547 | break; |
11548 | case DW_TAG_typedef: | |
63d06c5c DC |
11549 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
11550 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e37fd15a | 11551 | list_to_add = cu->list_in_scope; |
63d06c5c | 11552 | break; |
c906108c | 11553 | case DW_TAG_base_type: |
a02abb62 | 11554 | case DW_TAG_subrange_type: |
c906108c | 11555 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 11556 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 11557 | list_to_add = cu->list_in_scope; |
c906108c SS |
11558 | break; |
11559 | case DW_TAG_enumerator: | |
e142c38c | 11560 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
11561 | if (attr) |
11562 | { | |
e7c27a73 | 11563 | dwarf2_const_value (attr, sym, cu); |
c906108c | 11564 | } |
63d06c5c DC |
11565 | { |
11566 | /* NOTE: carlton/2003-11-10: See comment above in the | |
11567 | DW_TAG_class_type, etc. block. */ | |
11568 | ||
e142c38c | 11569 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
11570 | && (cu->language == language_cplus |
11571 | || cu->language == language_java) | |
e142c38c | 11572 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 11573 | } |
c906108c | 11574 | break; |
5c4e30ca DC |
11575 | case DW_TAG_namespace: |
11576 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
e37fd15a | 11577 | list_to_add = &global_symbols; |
5c4e30ca | 11578 | break; |
c906108c SS |
11579 | default: |
11580 | /* Not a tag we recognize. Hopefully we aren't processing | |
11581 | trash data, but since we must specifically ignore things | |
11582 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 11583 | this point. */ |
e2e0b3e5 | 11584 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 11585 | dwarf_tag_name (die->tag)); |
c906108c SS |
11586 | break; |
11587 | } | |
df8a16a1 | 11588 | |
e37fd15a SW |
11589 | if (suppress_add) |
11590 | { | |
11591 | sym->hash_next = objfile->template_symbols; | |
11592 | objfile->template_symbols = sym; | |
11593 | list_to_add = NULL; | |
11594 | } | |
11595 | ||
11596 | if (list_to_add != NULL) | |
11597 | add_symbol_to_list (sym, list_to_add); | |
11598 | ||
df8a16a1 DJ |
11599 | /* For the benefit of old versions of GCC, check for anonymous |
11600 | namespaces based on the demangled name. */ | |
11601 | if (!processing_has_namespace_info | |
94af9270 | 11602 | && cu->language == language_cplus) |
df8a16a1 | 11603 | cp_scan_for_anonymous_namespaces (sym); |
c906108c SS |
11604 | } |
11605 | return (sym); | |
11606 | } | |
11607 | ||
34eaf542 TT |
11608 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
11609 | ||
11610 | static struct symbol * | |
11611 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
11612 | { | |
11613 | return new_symbol_full (die, type, cu, NULL); | |
11614 | } | |
11615 | ||
98bfdba5 PA |
11616 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
11617 | zero-extend it as appropriate for the symbol's type. The DWARF | |
11618 | standard (v4) is not entirely clear about the meaning of using | |
11619 | DW_FORM_dataN for a constant with a signed type, where the type is | |
11620 | wider than the data. The conclusion of a discussion on the DWARF | |
11621 | list was that this is unspecified. We choose to always zero-extend | |
11622 | because that is the interpretation long in use by GCC. */ | |
c906108c | 11623 | |
98bfdba5 PA |
11624 | static gdb_byte * |
11625 | dwarf2_const_value_data (struct attribute *attr, struct type *type, | |
11626 | const char *name, struct obstack *obstack, | |
11627 | struct dwarf2_cu *cu, long *value, int bits) | |
c906108c | 11628 | { |
e7c27a73 | 11629 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
11630 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
11631 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
11632 | LONGEST l = DW_UNSND (attr); |
11633 | ||
11634 | if (bits < sizeof (*value) * 8) | |
11635 | { | |
11636 | l &= ((LONGEST) 1 << bits) - 1; | |
11637 | *value = l; | |
11638 | } | |
11639 | else if (bits == sizeof (*value) * 8) | |
11640 | *value = l; | |
11641 | else | |
11642 | { | |
11643 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
11644 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
11645 | return bytes; | |
11646 | } | |
11647 | ||
11648 | return NULL; | |
11649 | } | |
11650 | ||
11651 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
11652 | the value does not fit in *VALUE, set *BYTES - either already | |
11653 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
11654 | or, set *BATON, if we translated the constant to a location | |
11655 | expression. */ | |
11656 | ||
11657 | static void | |
11658 | dwarf2_const_value_attr (struct attribute *attr, struct type *type, | |
11659 | const char *name, struct obstack *obstack, | |
11660 | struct dwarf2_cu *cu, | |
11661 | long *value, gdb_byte **bytes, | |
11662 | struct dwarf2_locexpr_baton **baton) | |
11663 | { | |
11664 | struct objfile *objfile = cu->objfile; | |
11665 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 11666 | struct dwarf_block *blk; |
98bfdba5 PA |
11667 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
11668 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
11669 | ||
11670 | *value = 0; | |
11671 | *bytes = NULL; | |
11672 | *baton = NULL; | |
c906108c SS |
11673 | |
11674 | switch (attr->form) | |
11675 | { | |
11676 | case DW_FORM_addr: | |
ac56253d | 11677 | { |
ac56253d TT |
11678 | gdb_byte *data; |
11679 | ||
98bfdba5 PA |
11680 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
11681 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 11682 | cu_header->addr_size, |
98bfdba5 | 11683 | TYPE_LENGTH (type)); |
ac56253d TT |
11684 | /* Symbols of this form are reasonably rare, so we just |
11685 | piggyback on the existing location code rather than writing | |
11686 | a new implementation of symbol_computed_ops. */ | |
98bfdba5 PA |
11687 | *baton = obstack_alloc (&objfile->objfile_obstack, |
11688 | sizeof (struct dwarf2_locexpr_baton)); | |
11689 | (*baton)->per_cu = cu->per_cu; | |
11690 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 11691 | |
98bfdba5 PA |
11692 | (*baton)->size = 2 + cu_header->addr_size; |
11693 | data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size); | |
11694 | (*baton)->data = data; | |
ac56253d TT |
11695 | |
11696 | data[0] = DW_OP_addr; | |
11697 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
11698 | byte_order, DW_ADDR (attr)); | |
11699 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 11700 | } |
c906108c | 11701 | break; |
4ac36638 | 11702 | case DW_FORM_string: |
93b5768b | 11703 | case DW_FORM_strp: |
98bfdba5 PA |
11704 | /* DW_STRING is already allocated on the objfile obstack, point |
11705 | directly to it. */ | |
11706 | *bytes = (gdb_byte *) DW_STRING (attr); | |
93b5768b | 11707 | break; |
c906108c SS |
11708 | case DW_FORM_block1: |
11709 | case DW_FORM_block2: | |
11710 | case DW_FORM_block4: | |
11711 | case DW_FORM_block: | |
2dc7f7b3 | 11712 | case DW_FORM_exprloc: |
c906108c | 11713 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
11714 | if (TYPE_LENGTH (type) != blk->size) |
11715 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
11716 | TYPE_LENGTH (type)); | |
11717 | *bytes = blk->data; | |
c906108c | 11718 | break; |
2df3850c JM |
11719 | |
11720 | /* The DW_AT_const_value attributes are supposed to carry the | |
11721 | symbol's value "represented as it would be on the target | |
11722 | architecture." By the time we get here, it's already been | |
11723 | converted to host endianness, so we just need to sign- or | |
11724 | zero-extend it as appropriate. */ | |
11725 | case DW_FORM_data1: | |
3e43a32a MS |
11726 | *bytes = dwarf2_const_value_data (attr, type, name, |
11727 | obstack, cu, value, 8); | |
2df3850c | 11728 | break; |
c906108c | 11729 | case DW_FORM_data2: |
3e43a32a MS |
11730 | *bytes = dwarf2_const_value_data (attr, type, name, |
11731 | obstack, cu, value, 16); | |
2df3850c | 11732 | break; |
c906108c | 11733 | case DW_FORM_data4: |
3e43a32a MS |
11734 | *bytes = dwarf2_const_value_data (attr, type, name, |
11735 | obstack, cu, value, 32); | |
2df3850c | 11736 | break; |
c906108c | 11737 | case DW_FORM_data8: |
3e43a32a MS |
11738 | *bytes = dwarf2_const_value_data (attr, type, name, |
11739 | obstack, cu, value, 64); | |
2df3850c JM |
11740 | break; |
11741 | ||
c906108c | 11742 | case DW_FORM_sdata: |
98bfdba5 | 11743 | *value = DW_SND (attr); |
2df3850c JM |
11744 | break; |
11745 | ||
c906108c | 11746 | case DW_FORM_udata: |
98bfdba5 | 11747 | *value = DW_UNSND (attr); |
c906108c | 11748 | break; |
2df3850c | 11749 | |
c906108c | 11750 | default: |
4d3c2250 | 11751 | complaint (&symfile_complaints, |
e2e0b3e5 | 11752 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 11753 | dwarf_form_name (attr->form)); |
98bfdba5 | 11754 | *value = 0; |
c906108c SS |
11755 | break; |
11756 | } | |
11757 | } | |
11758 | ||
2df3850c | 11759 | |
98bfdba5 PA |
11760 | /* Copy constant value from an attribute to a symbol. */ |
11761 | ||
2df3850c | 11762 | static void |
98bfdba5 PA |
11763 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
11764 | struct dwarf2_cu *cu) | |
2df3850c | 11765 | { |
98bfdba5 PA |
11766 | struct objfile *objfile = cu->objfile; |
11767 | struct comp_unit_head *cu_header = &cu->header; | |
11768 | long value; | |
11769 | gdb_byte *bytes; | |
11770 | struct dwarf2_locexpr_baton *baton; | |
2df3850c | 11771 | |
98bfdba5 PA |
11772 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
11773 | SYMBOL_PRINT_NAME (sym), | |
11774 | &objfile->objfile_obstack, cu, | |
11775 | &value, &bytes, &baton); | |
2df3850c | 11776 | |
98bfdba5 PA |
11777 | if (baton != NULL) |
11778 | { | |
11779 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
11780 | SYMBOL_LOCATION_BATON (sym) = baton; | |
11781 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
11782 | } | |
11783 | else if (bytes != NULL) | |
11784 | { | |
11785 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
11786 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
11787 | } | |
11788 | else | |
11789 | { | |
11790 | SYMBOL_VALUE (sym) = value; | |
11791 | SYMBOL_CLASS (sym) = LOC_CONST; | |
11792 | } | |
2df3850c JM |
11793 | } |
11794 | ||
c906108c SS |
11795 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
11796 | ||
11797 | static struct type * | |
e7c27a73 | 11798 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11799 | { |
c906108c | 11800 | struct attribute *type_attr; |
c906108c | 11801 | |
e142c38c | 11802 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
11803 | if (!type_attr) |
11804 | { | |
11805 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 11806 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 11807 | } |
348e048f | 11808 | |
673bfd45 | 11809 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
11810 | } |
11811 | ||
b4ba55a1 JB |
11812 | /* True iff CU's producer generates GNAT Ada auxiliary information |
11813 | that allows to find parallel types through that information instead | |
11814 | of having to do expensive parallel lookups by type name. */ | |
11815 | ||
11816 | static int | |
11817 | need_gnat_info (struct dwarf2_cu *cu) | |
11818 | { | |
11819 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
11820 | of GNAT produces this auxiliary information, without any indication | |
11821 | that it is produced. Part of enhancing the FSF version of GNAT | |
11822 | to produce that information will be to put in place an indicator | |
11823 | that we can use in order to determine whether the descriptive type | |
11824 | info is available or not. One suggestion that has been made is | |
11825 | to use a new attribute, attached to the CU die. For now, assume | |
11826 | that the descriptive type info is not available. */ | |
11827 | return 0; | |
11828 | } | |
11829 | ||
b4ba55a1 JB |
11830 | /* Return the auxiliary type of the die in question using its |
11831 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
11832 | attribute is not present. */ | |
11833 | ||
11834 | static struct type * | |
11835 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
11836 | { | |
b4ba55a1 | 11837 | struct attribute *type_attr; |
b4ba55a1 JB |
11838 | |
11839 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
11840 | if (!type_attr) | |
11841 | return NULL; | |
11842 | ||
673bfd45 | 11843 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
11844 | } |
11845 | ||
11846 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
11847 | descriptive type accordingly. */ | |
11848 | ||
11849 | static void | |
11850 | set_descriptive_type (struct type *type, struct die_info *die, | |
11851 | struct dwarf2_cu *cu) | |
11852 | { | |
11853 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
11854 | ||
11855 | if (descriptive_type) | |
11856 | { | |
11857 | ALLOCATE_GNAT_AUX_TYPE (type); | |
11858 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
11859 | } | |
11860 | } | |
11861 | ||
c906108c SS |
11862 | /* Return the containing type of the die in question using its |
11863 | DW_AT_containing_type attribute. */ | |
11864 | ||
11865 | static struct type * | |
e7c27a73 | 11866 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11867 | { |
c906108c | 11868 | struct attribute *type_attr; |
c906108c | 11869 | |
e142c38c | 11870 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
11871 | if (!type_attr) |
11872 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
11873 | "[in module %s]"), cu->objfile->name); | |
11874 | ||
673bfd45 | 11875 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
11876 | } |
11877 | ||
673bfd45 DE |
11878 | /* Look up the type of DIE in CU using its type attribute ATTR. |
11879 | If there is no type substitute an error marker. */ | |
11880 | ||
c906108c | 11881 | static struct type * |
673bfd45 DE |
11882 | lookup_die_type (struct die_info *die, struct attribute *attr, |
11883 | struct dwarf2_cu *cu) | |
c906108c | 11884 | { |
f792889a DJ |
11885 | struct type *this_type; |
11886 | ||
673bfd45 DE |
11887 | /* First see if we have it cached. */ |
11888 | ||
11889 | if (is_ref_attr (attr)) | |
11890 | { | |
11891 | unsigned int offset = dwarf2_get_ref_die_offset (attr); | |
11892 | ||
11893 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
11894 | } | |
55f1336d | 11895 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 DE |
11896 | { |
11897 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
11898 | struct dwarf2_cu *sig_cu; | |
11899 | unsigned int offset; | |
11900 | ||
11901 | /* sig_type will be NULL if the signatured type is missing from | |
11902 | the debug info. */ | |
11903 | if (sig_type == NULL) | |
11904 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
11905 | "at 0x%x [in module %s]"), | |
11906 | die->offset, cu->objfile->name); | |
11907 | ||
11908 | gdb_assert (sig_type->per_cu.from_debug_types); | |
b3c8eb43 | 11909 | offset = sig_type->per_cu.offset + sig_type->type_offset; |
673bfd45 DE |
11910 | this_type = get_die_type_at_offset (offset, &sig_type->per_cu); |
11911 | } | |
11912 | else | |
11913 | { | |
11914 | dump_die_for_error (die); | |
11915 | error (_("Dwarf Error: Bad type attribute %s [in module %s]"), | |
11916 | dwarf_attr_name (attr->name), cu->objfile->name); | |
11917 | } | |
11918 | ||
11919 | /* If not cached we need to read it in. */ | |
11920 | ||
11921 | if (this_type == NULL) | |
11922 | { | |
11923 | struct die_info *type_die; | |
11924 | struct dwarf2_cu *type_cu = cu; | |
11925 | ||
11926 | type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
11927 | /* If the type is cached, we should have found it above. */ | |
11928 | gdb_assert (get_die_type (type_die, type_cu) == NULL); | |
11929 | this_type = read_type_die_1 (type_die, type_cu); | |
11930 | } | |
11931 | ||
11932 | /* If we still don't have a type use an error marker. */ | |
11933 | ||
11934 | if (this_type == NULL) | |
c906108c | 11935 | { |
b00fdb78 TT |
11936 | char *message, *saved; |
11937 | ||
11938 | /* read_type_die already issued a complaint. */ | |
11939 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
11940 | cu->objfile->name, | |
11941 | cu->header.offset, | |
11942 | die->offset); | |
11943 | saved = obstack_copy0 (&cu->objfile->objfile_obstack, | |
11944 | message, strlen (message)); | |
11945 | xfree (message); | |
11946 | ||
11947 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, cu->objfile); | |
c906108c | 11948 | } |
673bfd45 | 11949 | |
f792889a | 11950 | return this_type; |
c906108c SS |
11951 | } |
11952 | ||
673bfd45 DE |
11953 | /* Return the type in DIE, CU. |
11954 | Returns NULL for invalid types. | |
11955 | ||
11956 | This first does a lookup in the appropriate type_hash table, | |
11957 | and only reads the die in if necessary. | |
11958 | ||
11959 | NOTE: This can be called when reading in partial or full symbols. */ | |
11960 | ||
f792889a | 11961 | static struct type * |
e7c27a73 | 11962 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11963 | { |
f792889a DJ |
11964 | struct type *this_type; |
11965 | ||
11966 | this_type = get_die_type (die, cu); | |
11967 | if (this_type) | |
11968 | return this_type; | |
11969 | ||
673bfd45 DE |
11970 | return read_type_die_1 (die, cu); |
11971 | } | |
11972 | ||
11973 | /* Read the type in DIE, CU. | |
11974 | Returns NULL for invalid types. */ | |
11975 | ||
11976 | static struct type * | |
11977 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
11978 | { | |
11979 | struct type *this_type = NULL; | |
11980 | ||
c906108c SS |
11981 | switch (die->tag) |
11982 | { | |
11983 | case DW_TAG_class_type: | |
680b30c7 | 11984 | case DW_TAG_interface_type: |
c906108c SS |
11985 | case DW_TAG_structure_type: |
11986 | case DW_TAG_union_type: | |
f792889a | 11987 | this_type = read_structure_type (die, cu); |
c906108c SS |
11988 | break; |
11989 | case DW_TAG_enumeration_type: | |
f792889a | 11990 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
11991 | break; |
11992 | case DW_TAG_subprogram: | |
11993 | case DW_TAG_subroutine_type: | |
edb3359d | 11994 | case DW_TAG_inlined_subroutine: |
f792889a | 11995 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
11996 | break; |
11997 | case DW_TAG_array_type: | |
f792889a | 11998 | this_type = read_array_type (die, cu); |
c906108c | 11999 | break; |
72019c9c | 12000 | case DW_TAG_set_type: |
f792889a | 12001 | this_type = read_set_type (die, cu); |
72019c9c | 12002 | break; |
c906108c | 12003 | case DW_TAG_pointer_type: |
f792889a | 12004 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
12005 | break; |
12006 | case DW_TAG_ptr_to_member_type: | |
f792889a | 12007 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
12008 | break; |
12009 | case DW_TAG_reference_type: | |
f792889a | 12010 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
12011 | break; |
12012 | case DW_TAG_const_type: | |
f792889a | 12013 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
12014 | break; |
12015 | case DW_TAG_volatile_type: | |
f792889a | 12016 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
12017 | break; |
12018 | case DW_TAG_string_type: | |
f792889a | 12019 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
12020 | break; |
12021 | case DW_TAG_typedef: | |
f792889a | 12022 | this_type = read_typedef (die, cu); |
c906108c | 12023 | break; |
a02abb62 | 12024 | case DW_TAG_subrange_type: |
f792889a | 12025 | this_type = read_subrange_type (die, cu); |
a02abb62 | 12026 | break; |
c906108c | 12027 | case DW_TAG_base_type: |
f792889a | 12028 | this_type = read_base_type (die, cu); |
c906108c | 12029 | break; |
81a17f79 | 12030 | case DW_TAG_unspecified_type: |
f792889a | 12031 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 12032 | break; |
0114d602 DJ |
12033 | case DW_TAG_namespace: |
12034 | this_type = read_namespace_type (die, cu); | |
12035 | break; | |
f55ee35c JK |
12036 | case DW_TAG_module: |
12037 | this_type = read_module_type (die, cu); | |
12038 | break; | |
c906108c | 12039 | default: |
3e43a32a MS |
12040 | complaint (&symfile_complaints, |
12041 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 12042 | dwarf_tag_name (die->tag)); |
c906108c SS |
12043 | break; |
12044 | } | |
63d06c5c | 12045 | |
f792889a | 12046 | return this_type; |
63d06c5c DC |
12047 | } |
12048 | ||
abc72ce4 DE |
12049 | /* See if we can figure out if the class lives in a namespace. We do |
12050 | this by looking for a member function; its demangled name will | |
12051 | contain namespace info, if there is any. | |
12052 | Return the computed name or NULL. | |
12053 | Space for the result is allocated on the objfile's obstack. | |
12054 | This is the full-die version of guess_partial_die_structure_name. | |
12055 | In this case we know DIE has no useful parent. */ | |
12056 | ||
12057 | static char * | |
12058 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
12059 | { | |
12060 | struct die_info *spec_die; | |
12061 | struct dwarf2_cu *spec_cu; | |
12062 | struct die_info *child; | |
12063 | ||
12064 | spec_cu = cu; | |
12065 | spec_die = die_specification (die, &spec_cu); | |
12066 | if (spec_die != NULL) | |
12067 | { | |
12068 | die = spec_die; | |
12069 | cu = spec_cu; | |
12070 | } | |
12071 | ||
12072 | for (child = die->child; | |
12073 | child != NULL; | |
12074 | child = child->sibling) | |
12075 | { | |
12076 | if (child->tag == DW_TAG_subprogram) | |
12077 | { | |
12078 | struct attribute *attr; | |
12079 | ||
12080 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
12081 | if (attr == NULL) | |
12082 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
12083 | if (attr != NULL) | |
12084 | { | |
12085 | char *actual_name | |
12086 | = language_class_name_from_physname (cu->language_defn, | |
12087 | DW_STRING (attr)); | |
12088 | char *name = NULL; | |
12089 | ||
12090 | if (actual_name != NULL) | |
12091 | { | |
12092 | char *die_name = dwarf2_name (die, cu); | |
12093 | ||
12094 | if (die_name != NULL | |
12095 | && strcmp (die_name, actual_name) != 0) | |
12096 | { | |
12097 | /* Strip off the class name from the full name. | |
12098 | We want the prefix. */ | |
12099 | int die_name_len = strlen (die_name); | |
12100 | int actual_name_len = strlen (actual_name); | |
12101 | ||
12102 | /* Test for '::' as a sanity check. */ | |
12103 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
12104 | && actual_name[actual_name_len |
12105 | - die_name_len - 1] == ':') | |
abc72ce4 DE |
12106 | name = |
12107 | obsavestring (actual_name, | |
12108 | actual_name_len - die_name_len - 2, | |
12109 | &cu->objfile->objfile_obstack); | |
12110 | } | |
12111 | } | |
12112 | xfree (actual_name); | |
12113 | return name; | |
12114 | } | |
12115 | } | |
12116 | } | |
12117 | ||
12118 | return NULL; | |
12119 | } | |
12120 | ||
fdde2d81 | 12121 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 12122 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 12123 | |
0114d602 DJ |
12124 | For example, if we're within the method foo() in the following |
12125 | code: | |
12126 | ||
12127 | namespace N { | |
12128 | class C { | |
12129 | void foo () { | |
12130 | } | |
12131 | }; | |
12132 | } | |
12133 | ||
12134 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 DC |
12135 | |
12136 | static char * | |
e142c38c | 12137 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 12138 | { |
0114d602 DJ |
12139 | struct die_info *parent, *spec_die; |
12140 | struct dwarf2_cu *spec_cu; | |
12141 | struct type *parent_type; | |
63d06c5c | 12142 | |
f55ee35c JK |
12143 | if (cu->language != language_cplus && cu->language != language_java |
12144 | && cu->language != language_fortran) | |
0114d602 DJ |
12145 | return ""; |
12146 | ||
12147 | /* We have to be careful in the presence of DW_AT_specification. | |
12148 | For example, with GCC 3.4, given the code | |
12149 | ||
12150 | namespace N { | |
12151 | void foo() { | |
12152 | // Definition of N::foo. | |
12153 | } | |
12154 | } | |
12155 | ||
12156 | then we'll have a tree of DIEs like this: | |
12157 | ||
12158 | 1: DW_TAG_compile_unit | |
12159 | 2: DW_TAG_namespace // N | |
12160 | 3: DW_TAG_subprogram // declaration of N::foo | |
12161 | 4: DW_TAG_subprogram // definition of N::foo | |
12162 | DW_AT_specification // refers to die #3 | |
12163 | ||
12164 | Thus, when processing die #4, we have to pretend that we're in | |
12165 | the context of its DW_AT_specification, namely the contex of die | |
12166 | #3. */ | |
12167 | spec_cu = cu; | |
12168 | spec_die = die_specification (die, &spec_cu); | |
12169 | if (spec_die == NULL) | |
12170 | parent = die->parent; | |
12171 | else | |
63d06c5c | 12172 | { |
0114d602 DJ |
12173 | parent = spec_die->parent; |
12174 | cu = spec_cu; | |
63d06c5c | 12175 | } |
0114d602 DJ |
12176 | |
12177 | if (parent == NULL) | |
12178 | return ""; | |
98bfdba5 PA |
12179 | else if (parent->building_fullname) |
12180 | { | |
12181 | const char *name; | |
12182 | const char *parent_name; | |
12183 | ||
12184 | /* It has been seen on RealView 2.2 built binaries, | |
12185 | DW_TAG_template_type_param types actually _defined_ as | |
12186 | children of the parent class: | |
12187 | ||
12188 | enum E {}; | |
12189 | template class <class Enum> Class{}; | |
12190 | Class<enum E> class_e; | |
12191 | ||
12192 | 1: DW_TAG_class_type (Class) | |
12193 | 2: DW_TAG_enumeration_type (E) | |
12194 | 3: DW_TAG_enumerator (enum1:0) | |
12195 | 3: DW_TAG_enumerator (enum2:1) | |
12196 | ... | |
12197 | 2: DW_TAG_template_type_param | |
12198 | DW_AT_type DW_FORM_ref_udata (E) | |
12199 | ||
12200 | Besides being broken debug info, it can put GDB into an | |
12201 | infinite loop. Consider: | |
12202 | ||
12203 | When we're building the full name for Class<E>, we'll start | |
12204 | at Class, and go look over its template type parameters, | |
12205 | finding E. We'll then try to build the full name of E, and | |
12206 | reach here. We're now trying to build the full name of E, | |
12207 | and look over the parent DIE for containing scope. In the | |
12208 | broken case, if we followed the parent DIE of E, we'd again | |
12209 | find Class, and once again go look at its template type | |
12210 | arguments, etc., etc. Simply don't consider such parent die | |
12211 | as source-level parent of this die (it can't be, the language | |
12212 | doesn't allow it), and break the loop here. */ | |
12213 | name = dwarf2_name (die, cu); | |
12214 | parent_name = dwarf2_name (parent, cu); | |
12215 | complaint (&symfile_complaints, | |
12216 | _("template param type '%s' defined within parent '%s'"), | |
12217 | name ? name : "<unknown>", | |
12218 | parent_name ? parent_name : "<unknown>"); | |
12219 | return ""; | |
12220 | } | |
63d06c5c | 12221 | else |
0114d602 DJ |
12222 | switch (parent->tag) |
12223 | { | |
63d06c5c | 12224 | case DW_TAG_namespace: |
0114d602 | 12225 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
12226 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
12227 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
12228 | Work around this problem here. */ | |
12229 | if (cu->language == language_cplus | |
12230 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
12231 | return ""; | |
0114d602 DJ |
12232 | /* We give a name to even anonymous namespaces. */ |
12233 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 12234 | case DW_TAG_class_type: |
680b30c7 | 12235 | case DW_TAG_interface_type: |
63d06c5c | 12236 | case DW_TAG_structure_type: |
0114d602 | 12237 | case DW_TAG_union_type: |
f55ee35c | 12238 | case DW_TAG_module: |
0114d602 DJ |
12239 | parent_type = read_type_die (parent, cu); |
12240 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
12241 | return TYPE_TAG_NAME (parent_type); | |
12242 | else | |
12243 | /* An anonymous structure is only allowed non-static data | |
12244 | members; no typedefs, no member functions, et cetera. | |
12245 | So it does not need a prefix. */ | |
12246 | return ""; | |
abc72ce4 DE |
12247 | case DW_TAG_compile_unit: |
12248 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ | |
12249 | if (cu->language == language_cplus | |
12250 | && dwarf2_per_objfile->types.asection != NULL | |
12251 | && die->child != NULL | |
12252 | && (die->tag == DW_TAG_class_type | |
12253 | || die->tag == DW_TAG_structure_type | |
12254 | || die->tag == DW_TAG_union_type)) | |
12255 | { | |
12256 | char *name = guess_full_die_structure_name (die, cu); | |
12257 | if (name != NULL) | |
12258 | return name; | |
12259 | } | |
12260 | return ""; | |
63d06c5c | 12261 | default: |
8176b9b8 | 12262 | return determine_prefix (parent, cu); |
63d06c5c | 12263 | } |
63d06c5c DC |
12264 | } |
12265 | ||
3e43a32a MS |
12266 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
12267 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
12268 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
12269 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
12270 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 12271 | |
f55ee35c | 12272 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
12273 | |
12274 | static char * | |
f55ee35c JK |
12275 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
12276 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 12277 | { |
f55ee35c | 12278 | const char *lead = ""; |
5c315b68 | 12279 | const char *sep; |
63d06c5c | 12280 | |
3e43a32a MS |
12281 | if (suffix == NULL || suffix[0] == '\0' |
12282 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
12283 | sep = ""; |
12284 | else if (cu->language == language_java) | |
12285 | sep = "."; | |
f55ee35c JK |
12286 | else if (cu->language == language_fortran && physname) |
12287 | { | |
12288 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
12289 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
12290 | ||
12291 | lead = "__"; | |
12292 | sep = "_MOD_"; | |
12293 | } | |
987504bb JJ |
12294 | else |
12295 | sep = "::"; | |
63d06c5c | 12296 | |
6dd47d34 DE |
12297 | if (prefix == NULL) |
12298 | prefix = ""; | |
12299 | if (suffix == NULL) | |
12300 | suffix = ""; | |
12301 | ||
987504bb JJ |
12302 | if (obs == NULL) |
12303 | { | |
3e43a32a MS |
12304 | char *retval |
12305 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 12306 | |
f55ee35c JK |
12307 | strcpy (retval, lead); |
12308 | strcat (retval, prefix); | |
6dd47d34 DE |
12309 | strcat (retval, sep); |
12310 | strcat (retval, suffix); | |
63d06c5c DC |
12311 | return retval; |
12312 | } | |
987504bb JJ |
12313 | else |
12314 | { | |
12315 | /* We have an obstack. */ | |
f55ee35c | 12316 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 12317 | } |
63d06c5c DC |
12318 | } |
12319 | ||
c906108c SS |
12320 | /* Return sibling of die, NULL if no sibling. */ |
12321 | ||
f9aca02d | 12322 | static struct die_info * |
fba45db2 | 12323 | sibling_die (struct die_info *die) |
c906108c | 12324 | { |
639d11d3 | 12325 | return die->sibling; |
c906108c SS |
12326 | } |
12327 | ||
71c25dea TT |
12328 | /* Get name of a die, return NULL if not found. */ |
12329 | ||
12330 | static char * | |
12331 | dwarf2_canonicalize_name (char *name, struct dwarf2_cu *cu, | |
12332 | struct obstack *obstack) | |
12333 | { | |
12334 | if (name && cu->language == language_cplus) | |
12335 | { | |
12336 | char *canon_name = cp_canonicalize_string (name); | |
12337 | ||
12338 | if (canon_name != NULL) | |
12339 | { | |
12340 | if (strcmp (canon_name, name) != 0) | |
12341 | name = obsavestring (canon_name, strlen (canon_name), | |
12342 | obstack); | |
12343 | xfree (canon_name); | |
12344 | } | |
12345 | } | |
12346 | ||
12347 | return name; | |
c906108c SS |
12348 | } |
12349 | ||
9219021c DC |
12350 | /* Get name of a die, return NULL if not found. */ |
12351 | ||
12352 | static char * | |
e142c38c | 12353 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
12354 | { |
12355 | struct attribute *attr; | |
12356 | ||
e142c38c | 12357 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
12358 | if ((!attr || !DW_STRING (attr)) |
12359 | && die->tag != DW_TAG_class_type | |
12360 | && die->tag != DW_TAG_interface_type | |
12361 | && die->tag != DW_TAG_structure_type | |
12362 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
12363 | return NULL; |
12364 | ||
12365 | switch (die->tag) | |
12366 | { | |
12367 | case DW_TAG_compile_unit: | |
12368 | /* Compilation units have a DW_AT_name that is a filename, not | |
12369 | a source language identifier. */ | |
12370 | case DW_TAG_enumeration_type: | |
12371 | case DW_TAG_enumerator: | |
12372 | /* These tags always have simple identifiers already; no need | |
12373 | to canonicalize them. */ | |
12374 | return DW_STRING (attr); | |
907af001 | 12375 | |
418835cc KS |
12376 | case DW_TAG_subprogram: |
12377 | /* Java constructors will all be named "<init>", so return | |
12378 | the class name when we see this special case. */ | |
12379 | if (cu->language == language_java | |
12380 | && DW_STRING (attr) != NULL | |
12381 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
12382 | { | |
12383 | struct dwarf2_cu *spec_cu = cu; | |
12384 | struct die_info *spec_die; | |
12385 | ||
12386 | /* GCJ will output '<init>' for Java constructor names. | |
12387 | For this special case, return the name of the parent class. */ | |
12388 | ||
12389 | /* GCJ may output suprogram DIEs with AT_specification set. | |
12390 | If so, use the name of the specified DIE. */ | |
12391 | spec_die = die_specification (die, &spec_cu); | |
12392 | if (spec_die != NULL) | |
12393 | return dwarf2_name (spec_die, spec_cu); | |
12394 | ||
12395 | do | |
12396 | { | |
12397 | die = die->parent; | |
12398 | if (die->tag == DW_TAG_class_type) | |
12399 | return dwarf2_name (die, cu); | |
12400 | } | |
12401 | while (die->tag != DW_TAG_compile_unit); | |
12402 | } | |
907af001 UW |
12403 | break; |
12404 | ||
12405 | case DW_TAG_class_type: | |
12406 | case DW_TAG_interface_type: | |
12407 | case DW_TAG_structure_type: | |
12408 | case DW_TAG_union_type: | |
12409 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
12410 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
12411 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
12412 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
12413 | if (attr && DW_STRING (attr) |
12414 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
12415 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 12416 | return NULL; |
53832f31 TT |
12417 | |
12418 | /* GCC might emit a nameless typedef that has a linkage name. See | |
12419 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
12420 | if (!attr || DW_STRING (attr) == NULL) | |
12421 | { | |
df5c6c50 | 12422 | char *demangled = NULL; |
53832f31 TT |
12423 | |
12424 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
12425 | if (attr == NULL) | |
12426 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
12427 | ||
12428 | if (attr == NULL || DW_STRING (attr) == NULL) | |
12429 | return NULL; | |
12430 | ||
df5c6c50 JK |
12431 | /* Avoid demangling DW_STRING (attr) the second time on a second |
12432 | call for the same DIE. */ | |
12433 | if (!DW_STRING_IS_CANONICAL (attr)) | |
12434 | demangled = cplus_demangle (DW_STRING (attr), DMGL_TYPES); | |
53832f31 TT |
12435 | |
12436 | if (demangled) | |
12437 | { | |
12438 | /* FIXME: we already did this for the partial symbol... */ | |
12439 | DW_STRING (attr) | |
12440 | = obsavestring (demangled, strlen (demangled), | |
12441 | &cu->objfile->objfile_obstack); | |
12442 | DW_STRING_IS_CANONICAL (attr) = 1; | |
12443 | xfree (demangled); | |
12444 | } | |
12445 | } | |
907af001 UW |
12446 | break; |
12447 | ||
71c25dea | 12448 | default: |
907af001 UW |
12449 | break; |
12450 | } | |
12451 | ||
12452 | if (!DW_STRING_IS_CANONICAL (attr)) | |
12453 | { | |
12454 | DW_STRING (attr) | |
12455 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
12456 | &cu->objfile->objfile_obstack); | |
12457 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 12458 | } |
907af001 | 12459 | return DW_STRING (attr); |
9219021c DC |
12460 | } |
12461 | ||
12462 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
12463 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
12464 | containing the return value on output. */ | |
9219021c DC |
12465 | |
12466 | static struct die_info * | |
f2f0e013 | 12467 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
12468 | { |
12469 | struct attribute *attr; | |
9219021c | 12470 | |
f2f0e013 | 12471 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
12472 | if (attr == NULL) |
12473 | return NULL; | |
12474 | ||
f2f0e013 | 12475 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
12476 | } |
12477 | ||
c906108c SS |
12478 | /* Convert a DIE tag into its string name. */ |
12479 | ||
12480 | static char * | |
aa1ee363 | 12481 | dwarf_tag_name (unsigned tag) |
c906108c SS |
12482 | { |
12483 | switch (tag) | |
12484 | { | |
12485 | case DW_TAG_padding: | |
12486 | return "DW_TAG_padding"; | |
12487 | case DW_TAG_array_type: | |
12488 | return "DW_TAG_array_type"; | |
12489 | case DW_TAG_class_type: | |
12490 | return "DW_TAG_class_type"; | |
12491 | case DW_TAG_entry_point: | |
12492 | return "DW_TAG_entry_point"; | |
12493 | case DW_TAG_enumeration_type: | |
12494 | return "DW_TAG_enumeration_type"; | |
12495 | case DW_TAG_formal_parameter: | |
12496 | return "DW_TAG_formal_parameter"; | |
12497 | case DW_TAG_imported_declaration: | |
12498 | return "DW_TAG_imported_declaration"; | |
12499 | case DW_TAG_label: | |
12500 | return "DW_TAG_label"; | |
12501 | case DW_TAG_lexical_block: | |
12502 | return "DW_TAG_lexical_block"; | |
12503 | case DW_TAG_member: | |
12504 | return "DW_TAG_member"; | |
12505 | case DW_TAG_pointer_type: | |
12506 | return "DW_TAG_pointer_type"; | |
12507 | case DW_TAG_reference_type: | |
12508 | return "DW_TAG_reference_type"; | |
12509 | case DW_TAG_compile_unit: | |
12510 | return "DW_TAG_compile_unit"; | |
12511 | case DW_TAG_string_type: | |
12512 | return "DW_TAG_string_type"; | |
12513 | case DW_TAG_structure_type: | |
12514 | return "DW_TAG_structure_type"; | |
12515 | case DW_TAG_subroutine_type: | |
12516 | return "DW_TAG_subroutine_type"; | |
12517 | case DW_TAG_typedef: | |
12518 | return "DW_TAG_typedef"; | |
12519 | case DW_TAG_union_type: | |
12520 | return "DW_TAG_union_type"; | |
12521 | case DW_TAG_unspecified_parameters: | |
12522 | return "DW_TAG_unspecified_parameters"; | |
12523 | case DW_TAG_variant: | |
12524 | return "DW_TAG_variant"; | |
12525 | case DW_TAG_common_block: | |
12526 | return "DW_TAG_common_block"; | |
12527 | case DW_TAG_common_inclusion: | |
12528 | return "DW_TAG_common_inclusion"; | |
12529 | case DW_TAG_inheritance: | |
12530 | return "DW_TAG_inheritance"; | |
12531 | case DW_TAG_inlined_subroutine: | |
12532 | return "DW_TAG_inlined_subroutine"; | |
12533 | case DW_TAG_module: | |
12534 | return "DW_TAG_module"; | |
12535 | case DW_TAG_ptr_to_member_type: | |
12536 | return "DW_TAG_ptr_to_member_type"; | |
12537 | case DW_TAG_set_type: | |
12538 | return "DW_TAG_set_type"; | |
12539 | case DW_TAG_subrange_type: | |
12540 | return "DW_TAG_subrange_type"; | |
12541 | case DW_TAG_with_stmt: | |
12542 | return "DW_TAG_with_stmt"; | |
12543 | case DW_TAG_access_declaration: | |
12544 | return "DW_TAG_access_declaration"; | |
12545 | case DW_TAG_base_type: | |
12546 | return "DW_TAG_base_type"; | |
12547 | case DW_TAG_catch_block: | |
12548 | return "DW_TAG_catch_block"; | |
12549 | case DW_TAG_const_type: | |
12550 | return "DW_TAG_const_type"; | |
12551 | case DW_TAG_constant: | |
12552 | return "DW_TAG_constant"; | |
12553 | case DW_TAG_enumerator: | |
12554 | return "DW_TAG_enumerator"; | |
12555 | case DW_TAG_file_type: | |
12556 | return "DW_TAG_file_type"; | |
12557 | case DW_TAG_friend: | |
12558 | return "DW_TAG_friend"; | |
12559 | case DW_TAG_namelist: | |
12560 | return "DW_TAG_namelist"; | |
12561 | case DW_TAG_namelist_item: | |
12562 | return "DW_TAG_namelist_item"; | |
12563 | case DW_TAG_packed_type: | |
12564 | return "DW_TAG_packed_type"; | |
12565 | case DW_TAG_subprogram: | |
12566 | return "DW_TAG_subprogram"; | |
12567 | case DW_TAG_template_type_param: | |
12568 | return "DW_TAG_template_type_param"; | |
12569 | case DW_TAG_template_value_param: | |
12570 | return "DW_TAG_template_value_param"; | |
12571 | case DW_TAG_thrown_type: | |
12572 | return "DW_TAG_thrown_type"; | |
12573 | case DW_TAG_try_block: | |
12574 | return "DW_TAG_try_block"; | |
12575 | case DW_TAG_variant_part: | |
12576 | return "DW_TAG_variant_part"; | |
12577 | case DW_TAG_variable: | |
12578 | return "DW_TAG_variable"; | |
12579 | case DW_TAG_volatile_type: | |
12580 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
12581 | case DW_TAG_dwarf_procedure: |
12582 | return "DW_TAG_dwarf_procedure"; | |
12583 | case DW_TAG_restrict_type: | |
12584 | return "DW_TAG_restrict_type"; | |
12585 | case DW_TAG_interface_type: | |
12586 | return "DW_TAG_interface_type"; | |
12587 | case DW_TAG_namespace: | |
12588 | return "DW_TAG_namespace"; | |
12589 | case DW_TAG_imported_module: | |
12590 | return "DW_TAG_imported_module"; | |
12591 | case DW_TAG_unspecified_type: | |
12592 | return "DW_TAG_unspecified_type"; | |
12593 | case DW_TAG_partial_unit: | |
12594 | return "DW_TAG_partial_unit"; | |
12595 | case DW_TAG_imported_unit: | |
12596 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
12597 | case DW_TAG_condition: |
12598 | return "DW_TAG_condition"; | |
12599 | case DW_TAG_shared_type: | |
12600 | return "DW_TAG_shared_type"; | |
348e048f DE |
12601 | case DW_TAG_type_unit: |
12602 | return "DW_TAG_type_unit"; | |
c906108c SS |
12603 | case DW_TAG_MIPS_loop: |
12604 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
12605 | case DW_TAG_HP_array_descriptor: |
12606 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
12607 | case DW_TAG_format_label: |
12608 | return "DW_TAG_format_label"; | |
12609 | case DW_TAG_function_template: | |
12610 | return "DW_TAG_function_template"; | |
12611 | case DW_TAG_class_template: | |
12612 | return "DW_TAG_class_template"; | |
b7619582 GF |
12613 | case DW_TAG_GNU_BINCL: |
12614 | return "DW_TAG_GNU_BINCL"; | |
12615 | case DW_TAG_GNU_EINCL: | |
12616 | return "DW_TAG_GNU_EINCL"; | |
12617 | case DW_TAG_upc_shared_type: | |
12618 | return "DW_TAG_upc_shared_type"; | |
12619 | case DW_TAG_upc_strict_type: | |
12620 | return "DW_TAG_upc_strict_type"; | |
12621 | case DW_TAG_upc_relaxed_type: | |
12622 | return "DW_TAG_upc_relaxed_type"; | |
12623 | case DW_TAG_PGI_kanji_type: | |
12624 | return "DW_TAG_PGI_kanji_type"; | |
12625 | case DW_TAG_PGI_interface_block: | |
12626 | return "DW_TAG_PGI_interface_block"; | |
c906108c SS |
12627 | default: |
12628 | return "DW_TAG_<unknown>"; | |
12629 | } | |
12630 | } | |
12631 | ||
12632 | /* Convert a DWARF attribute code into its string name. */ | |
12633 | ||
12634 | static char * | |
aa1ee363 | 12635 | dwarf_attr_name (unsigned attr) |
c906108c SS |
12636 | { |
12637 | switch (attr) | |
12638 | { | |
12639 | case DW_AT_sibling: | |
12640 | return "DW_AT_sibling"; | |
12641 | case DW_AT_location: | |
12642 | return "DW_AT_location"; | |
12643 | case DW_AT_name: | |
12644 | return "DW_AT_name"; | |
12645 | case DW_AT_ordering: | |
12646 | return "DW_AT_ordering"; | |
12647 | case DW_AT_subscr_data: | |
12648 | return "DW_AT_subscr_data"; | |
12649 | case DW_AT_byte_size: | |
12650 | return "DW_AT_byte_size"; | |
12651 | case DW_AT_bit_offset: | |
12652 | return "DW_AT_bit_offset"; | |
12653 | case DW_AT_bit_size: | |
12654 | return "DW_AT_bit_size"; | |
12655 | case DW_AT_element_list: | |
12656 | return "DW_AT_element_list"; | |
12657 | case DW_AT_stmt_list: | |
12658 | return "DW_AT_stmt_list"; | |
12659 | case DW_AT_low_pc: | |
12660 | return "DW_AT_low_pc"; | |
12661 | case DW_AT_high_pc: | |
12662 | return "DW_AT_high_pc"; | |
12663 | case DW_AT_language: | |
12664 | return "DW_AT_language"; | |
12665 | case DW_AT_member: | |
12666 | return "DW_AT_member"; | |
12667 | case DW_AT_discr: | |
12668 | return "DW_AT_discr"; | |
12669 | case DW_AT_discr_value: | |
12670 | return "DW_AT_discr_value"; | |
12671 | case DW_AT_visibility: | |
12672 | return "DW_AT_visibility"; | |
12673 | case DW_AT_import: | |
12674 | return "DW_AT_import"; | |
12675 | case DW_AT_string_length: | |
12676 | return "DW_AT_string_length"; | |
12677 | case DW_AT_common_reference: | |
12678 | return "DW_AT_common_reference"; | |
12679 | case DW_AT_comp_dir: | |
12680 | return "DW_AT_comp_dir"; | |
12681 | case DW_AT_const_value: | |
12682 | return "DW_AT_const_value"; | |
12683 | case DW_AT_containing_type: | |
12684 | return "DW_AT_containing_type"; | |
12685 | case DW_AT_default_value: | |
12686 | return "DW_AT_default_value"; | |
12687 | case DW_AT_inline: | |
12688 | return "DW_AT_inline"; | |
12689 | case DW_AT_is_optional: | |
12690 | return "DW_AT_is_optional"; | |
12691 | case DW_AT_lower_bound: | |
12692 | return "DW_AT_lower_bound"; | |
12693 | case DW_AT_producer: | |
12694 | return "DW_AT_producer"; | |
12695 | case DW_AT_prototyped: | |
12696 | return "DW_AT_prototyped"; | |
12697 | case DW_AT_return_addr: | |
12698 | return "DW_AT_return_addr"; | |
12699 | case DW_AT_start_scope: | |
12700 | return "DW_AT_start_scope"; | |
09fa0d7c JK |
12701 | case DW_AT_bit_stride: |
12702 | return "DW_AT_bit_stride"; | |
c906108c SS |
12703 | case DW_AT_upper_bound: |
12704 | return "DW_AT_upper_bound"; | |
12705 | case DW_AT_abstract_origin: | |
12706 | return "DW_AT_abstract_origin"; | |
12707 | case DW_AT_accessibility: | |
12708 | return "DW_AT_accessibility"; | |
12709 | case DW_AT_address_class: | |
12710 | return "DW_AT_address_class"; | |
12711 | case DW_AT_artificial: | |
12712 | return "DW_AT_artificial"; | |
12713 | case DW_AT_base_types: | |
12714 | return "DW_AT_base_types"; | |
12715 | case DW_AT_calling_convention: | |
12716 | return "DW_AT_calling_convention"; | |
12717 | case DW_AT_count: | |
12718 | return "DW_AT_count"; | |
12719 | case DW_AT_data_member_location: | |
12720 | return "DW_AT_data_member_location"; | |
12721 | case DW_AT_decl_column: | |
12722 | return "DW_AT_decl_column"; | |
12723 | case DW_AT_decl_file: | |
12724 | return "DW_AT_decl_file"; | |
12725 | case DW_AT_decl_line: | |
12726 | return "DW_AT_decl_line"; | |
12727 | case DW_AT_declaration: | |
12728 | return "DW_AT_declaration"; | |
12729 | case DW_AT_discr_list: | |
12730 | return "DW_AT_discr_list"; | |
12731 | case DW_AT_encoding: | |
12732 | return "DW_AT_encoding"; | |
12733 | case DW_AT_external: | |
12734 | return "DW_AT_external"; | |
12735 | case DW_AT_frame_base: | |
12736 | return "DW_AT_frame_base"; | |
12737 | case DW_AT_friend: | |
12738 | return "DW_AT_friend"; | |
12739 | case DW_AT_identifier_case: | |
12740 | return "DW_AT_identifier_case"; | |
12741 | case DW_AT_macro_info: | |
12742 | return "DW_AT_macro_info"; | |
12743 | case DW_AT_namelist_items: | |
12744 | return "DW_AT_namelist_items"; | |
12745 | case DW_AT_priority: | |
12746 | return "DW_AT_priority"; | |
12747 | case DW_AT_segment: | |
12748 | return "DW_AT_segment"; | |
12749 | case DW_AT_specification: | |
12750 | return "DW_AT_specification"; | |
12751 | case DW_AT_static_link: | |
12752 | return "DW_AT_static_link"; | |
12753 | case DW_AT_type: | |
12754 | return "DW_AT_type"; | |
12755 | case DW_AT_use_location: | |
12756 | return "DW_AT_use_location"; | |
12757 | case DW_AT_variable_parameter: | |
12758 | return "DW_AT_variable_parameter"; | |
12759 | case DW_AT_virtuality: | |
12760 | return "DW_AT_virtuality"; | |
12761 | case DW_AT_vtable_elem_location: | |
12762 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 12763 | /* DWARF 3 values. */ |
d9fa45fe DC |
12764 | case DW_AT_allocated: |
12765 | return "DW_AT_allocated"; | |
12766 | case DW_AT_associated: | |
12767 | return "DW_AT_associated"; | |
12768 | case DW_AT_data_location: | |
12769 | return "DW_AT_data_location"; | |
09fa0d7c JK |
12770 | case DW_AT_byte_stride: |
12771 | return "DW_AT_byte_stride"; | |
d9fa45fe DC |
12772 | case DW_AT_entry_pc: |
12773 | return "DW_AT_entry_pc"; | |
12774 | case DW_AT_use_UTF8: | |
12775 | return "DW_AT_use_UTF8"; | |
12776 | case DW_AT_extension: | |
12777 | return "DW_AT_extension"; | |
12778 | case DW_AT_ranges: | |
12779 | return "DW_AT_ranges"; | |
12780 | case DW_AT_trampoline: | |
12781 | return "DW_AT_trampoline"; | |
12782 | case DW_AT_call_column: | |
12783 | return "DW_AT_call_column"; | |
12784 | case DW_AT_call_file: | |
12785 | return "DW_AT_call_file"; | |
12786 | case DW_AT_call_line: | |
12787 | return "DW_AT_call_line"; | |
b7619582 GF |
12788 | case DW_AT_description: |
12789 | return "DW_AT_description"; | |
12790 | case DW_AT_binary_scale: | |
12791 | return "DW_AT_binary_scale"; | |
12792 | case DW_AT_decimal_scale: | |
12793 | return "DW_AT_decimal_scale"; | |
12794 | case DW_AT_small: | |
12795 | return "DW_AT_small"; | |
12796 | case DW_AT_decimal_sign: | |
12797 | return "DW_AT_decimal_sign"; | |
12798 | case DW_AT_digit_count: | |
12799 | return "DW_AT_digit_count"; | |
12800 | case DW_AT_picture_string: | |
12801 | return "DW_AT_picture_string"; | |
12802 | case DW_AT_mutable: | |
12803 | return "DW_AT_mutable"; | |
12804 | case DW_AT_threads_scaled: | |
12805 | return "DW_AT_threads_scaled"; | |
12806 | case DW_AT_explicit: | |
12807 | return "DW_AT_explicit"; | |
12808 | case DW_AT_object_pointer: | |
12809 | return "DW_AT_object_pointer"; | |
12810 | case DW_AT_endianity: | |
12811 | return "DW_AT_endianity"; | |
12812 | case DW_AT_elemental: | |
12813 | return "DW_AT_elemental"; | |
12814 | case DW_AT_pure: | |
12815 | return "DW_AT_pure"; | |
12816 | case DW_AT_recursive: | |
12817 | return "DW_AT_recursive"; | |
348e048f DE |
12818 | /* DWARF 4 values. */ |
12819 | case DW_AT_signature: | |
12820 | return "DW_AT_signature"; | |
31ef98ae TT |
12821 | case DW_AT_linkage_name: |
12822 | return "DW_AT_linkage_name"; | |
b7619582 | 12823 | /* SGI/MIPS extensions. */ |
c764a876 | 12824 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
c906108c SS |
12825 | case DW_AT_MIPS_fde: |
12826 | return "DW_AT_MIPS_fde"; | |
c764a876 | 12827 | #endif |
c906108c SS |
12828 | case DW_AT_MIPS_loop_begin: |
12829 | return "DW_AT_MIPS_loop_begin"; | |
12830 | case DW_AT_MIPS_tail_loop_begin: | |
12831 | return "DW_AT_MIPS_tail_loop_begin"; | |
12832 | case DW_AT_MIPS_epilog_begin: | |
12833 | return "DW_AT_MIPS_epilog_begin"; | |
12834 | case DW_AT_MIPS_loop_unroll_factor: | |
12835 | return "DW_AT_MIPS_loop_unroll_factor"; | |
12836 | case DW_AT_MIPS_software_pipeline_depth: | |
12837 | return "DW_AT_MIPS_software_pipeline_depth"; | |
12838 | case DW_AT_MIPS_linkage_name: | |
12839 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
12840 | case DW_AT_MIPS_stride: |
12841 | return "DW_AT_MIPS_stride"; | |
12842 | case DW_AT_MIPS_abstract_name: | |
12843 | return "DW_AT_MIPS_abstract_name"; | |
12844 | case DW_AT_MIPS_clone_origin: | |
12845 | return "DW_AT_MIPS_clone_origin"; | |
12846 | case DW_AT_MIPS_has_inlines: | |
12847 | return "DW_AT_MIPS_has_inlines"; | |
b7619582 | 12848 | /* HP extensions. */ |
c764a876 | 12849 | #ifndef MIPS /* collides with DW_AT_MIPS_fde */ |
b7619582 GF |
12850 | case DW_AT_HP_block_index: |
12851 | return "DW_AT_HP_block_index"; | |
c764a876 | 12852 | #endif |
b7619582 GF |
12853 | case DW_AT_HP_unmodifiable: |
12854 | return "DW_AT_HP_unmodifiable"; | |
12855 | case DW_AT_HP_actuals_stmt_list: | |
12856 | return "DW_AT_HP_actuals_stmt_list"; | |
12857 | case DW_AT_HP_proc_per_section: | |
12858 | return "DW_AT_HP_proc_per_section"; | |
12859 | case DW_AT_HP_raw_data_ptr: | |
12860 | return "DW_AT_HP_raw_data_ptr"; | |
12861 | case DW_AT_HP_pass_by_reference: | |
12862 | return "DW_AT_HP_pass_by_reference"; | |
12863 | case DW_AT_HP_opt_level: | |
12864 | return "DW_AT_HP_opt_level"; | |
12865 | case DW_AT_HP_prof_version_id: | |
12866 | return "DW_AT_HP_prof_version_id"; | |
12867 | case DW_AT_HP_opt_flags: | |
12868 | return "DW_AT_HP_opt_flags"; | |
12869 | case DW_AT_HP_cold_region_low_pc: | |
12870 | return "DW_AT_HP_cold_region_low_pc"; | |
12871 | case DW_AT_HP_cold_region_high_pc: | |
12872 | return "DW_AT_HP_cold_region_high_pc"; | |
12873 | case DW_AT_HP_all_variables_modifiable: | |
12874 | return "DW_AT_HP_all_variables_modifiable"; | |
12875 | case DW_AT_HP_linkage_name: | |
12876 | return "DW_AT_HP_linkage_name"; | |
12877 | case DW_AT_HP_prof_flags: | |
12878 | return "DW_AT_HP_prof_flags"; | |
12879 | /* GNU extensions. */ | |
c906108c SS |
12880 | case DW_AT_sf_names: |
12881 | return "DW_AT_sf_names"; | |
12882 | case DW_AT_src_info: | |
12883 | return "DW_AT_src_info"; | |
12884 | case DW_AT_mac_info: | |
12885 | return "DW_AT_mac_info"; | |
12886 | case DW_AT_src_coords: | |
12887 | return "DW_AT_src_coords"; | |
12888 | case DW_AT_body_begin: | |
12889 | return "DW_AT_body_begin"; | |
12890 | case DW_AT_body_end: | |
12891 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
12892 | case DW_AT_GNU_vector: |
12893 | return "DW_AT_GNU_vector"; | |
2de00c64 DE |
12894 | case DW_AT_GNU_odr_signature: |
12895 | return "DW_AT_GNU_odr_signature"; | |
b7619582 GF |
12896 | /* VMS extensions. */ |
12897 | case DW_AT_VMS_rtnbeg_pd_address: | |
12898 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
12899 | /* UPC extension. */ | |
12900 | case DW_AT_upc_threads_scaled: | |
12901 | return "DW_AT_upc_threads_scaled"; | |
12902 | /* PGI (STMicroelectronics) extensions. */ | |
12903 | case DW_AT_PGI_lbase: | |
12904 | return "DW_AT_PGI_lbase"; | |
12905 | case DW_AT_PGI_soffset: | |
12906 | return "DW_AT_PGI_soffset"; | |
12907 | case DW_AT_PGI_lstride: | |
12908 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
12909 | default: |
12910 | return "DW_AT_<unknown>"; | |
12911 | } | |
12912 | } | |
12913 | ||
12914 | /* Convert a DWARF value form code into its string name. */ | |
12915 | ||
12916 | static char * | |
aa1ee363 | 12917 | dwarf_form_name (unsigned form) |
c906108c SS |
12918 | { |
12919 | switch (form) | |
12920 | { | |
12921 | case DW_FORM_addr: | |
12922 | return "DW_FORM_addr"; | |
12923 | case DW_FORM_block2: | |
12924 | return "DW_FORM_block2"; | |
12925 | case DW_FORM_block4: | |
12926 | return "DW_FORM_block4"; | |
12927 | case DW_FORM_data2: | |
12928 | return "DW_FORM_data2"; | |
12929 | case DW_FORM_data4: | |
12930 | return "DW_FORM_data4"; | |
12931 | case DW_FORM_data8: | |
12932 | return "DW_FORM_data8"; | |
12933 | case DW_FORM_string: | |
12934 | return "DW_FORM_string"; | |
12935 | case DW_FORM_block: | |
12936 | return "DW_FORM_block"; | |
12937 | case DW_FORM_block1: | |
12938 | return "DW_FORM_block1"; | |
12939 | case DW_FORM_data1: | |
12940 | return "DW_FORM_data1"; | |
12941 | case DW_FORM_flag: | |
12942 | return "DW_FORM_flag"; | |
12943 | case DW_FORM_sdata: | |
12944 | return "DW_FORM_sdata"; | |
12945 | case DW_FORM_strp: | |
12946 | return "DW_FORM_strp"; | |
12947 | case DW_FORM_udata: | |
12948 | return "DW_FORM_udata"; | |
12949 | case DW_FORM_ref_addr: | |
12950 | return "DW_FORM_ref_addr"; | |
12951 | case DW_FORM_ref1: | |
12952 | return "DW_FORM_ref1"; | |
12953 | case DW_FORM_ref2: | |
12954 | return "DW_FORM_ref2"; | |
12955 | case DW_FORM_ref4: | |
12956 | return "DW_FORM_ref4"; | |
12957 | case DW_FORM_ref8: | |
12958 | return "DW_FORM_ref8"; | |
12959 | case DW_FORM_ref_udata: | |
12960 | return "DW_FORM_ref_udata"; | |
12961 | case DW_FORM_indirect: | |
12962 | return "DW_FORM_indirect"; | |
348e048f DE |
12963 | case DW_FORM_sec_offset: |
12964 | return "DW_FORM_sec_offset"; | |
12965 | case DW_FORM_exprloc: | |
12966 | return "DW_FORM_exprloc"; | |
12967 | case DW_FORM_flag_present: | |
12968 | return "DW_FORM_flag_present"; | |
55f1336d TT |
12969 | case DW_FORM_ref_sig8: |
12970 | return "DW_FORM_ref_sig8"; | |
c906108c SS |
12971 | default: |
12972 | return "DW_FORM_<unknown>"; | |
12973 | } | |
12974 | } | |
12975 | ||
12976 | /* Convert a DWARF stack opcode into its string name. */ | |
12977 | ||
9eae7c52 | 12978 | const char * |
b1bfef65 | 12979 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
12980 | { |
12981 | switch (op) | |
12982 | { | |
12983 | case DW_OP_addr: | |
12984 | return "DW_OP_addr"; | |
12985 | case DW_OP_deref: | |
12986 | return "DW_OP_deref"; | |
12987 | case DW_OP_const1u: | |
12988 | return "DW_OP_const1u"; | |
12989 | case DW_OP_const1s: | |
12990 | return "DW_OP_const1s"; | |
12991 | case DW_OP_const2u: | |
12992 | return "DW_OP_const2u"; | |
12993 | case DW_OP_const2s: | |
12994 | return "DW_OP_const2s"; | |
12995 | case DW_OP_const4u: | |
12996 | return "DW_OP_const4u"; | |
12997 | case DW_OP_const4s: | |
12998 | return "DW_OP_const4s"; | |
12999 | case DW_OP_const8u: | |
13000 | return "DW_OP_const8u"; | |
13001 | case DW_OP_const8s: | |
13002 | return "DW_OP_const8s"; | |
13003 | case DW_OP_constu: | |
13004 | return "DW_OP_constu"; | |
13005 | case DW_OP_consts: | |
13006 | return "DW_OP_consts"; | |
13007 | case DW_OP_dup: | |
13008 | return "DW_OP_dup"; | |
13009 | case DW_OP_drop: | |
13010 | return "DW_OP_drop"; | |
13011 | case DW_OP_over: | |
13012 | return "DW_OP_over"; | |
13013 | case DW_OP_pick: | |
13014 | return "DW_OP_pick"; | |
13015 | case DW_OP_swap: | |
13016 | return "DW_OP_swap"; | |
13017 | case DW_OP_rot: | |
13018 | return "DW_OP_rot"; | |
13019 | case DW_OP_xderef: | |
13020 | return "DW_OP_xderef"; | |
13021 | case DW_OP_abs: | |
13022 | return "DW_OP_abs"; | |
13023 | case DW_OP_and: | |
13024 | return "DW_OP_and"; | |
13025 | case DW_OP_div: | |
13026 | return "DW_OP_div"; | |
13027 | case DW_OP_minus: | |
13028 | return "DW_OP_minus"; | |
13029 | case DW_OP_mod: | |
13030 | return "DW_OP_mod"; | |
13031 | case DW_OP_mul: | |
13032 | return "DW_OP_mul"; | |
13033 | case DW_OP_neg: | |
13034 | return "DW_OP_neg"; | |
13035 | case DW_OP_not: | |
13036 | return "DW_OP_not"; | |
13037 | case DW_OP_or: | |
13038 | return "DW_OP_or"; | |
13039 | case DW_OP_plus: | |
13040 | return "DW_OP_plus"; | |
13041 | case DW_OP_plus_uconst: | |
13042 | return "DW_OP_plus_uconst"; | |
13043 | case DW_OP_shl: | |
13044 | return "DW_OP_shl"; | |
13045 | case DW_OP_shr: | |
13046 | return "DW_OP_shr"; | |
13047 | case DW_OP_shra: | |
13048 | return "DW_OP_shra"; | |
13049 | case DW_OP_xor: | |
13050 | return "DW_OP_xor"; | |
13051 | case DW_OP_bra: | |
13052 | return "DW_OP_bra"; | |
13053 | case DW_OP_eq: | |
13054 | return "DW_OP_eq"; | |
13055 | case DW_OP_ge: | |
13056 | return "DW_OP_ge"; | |
13057 | case DW_OP_gt: | |
13058 | return "DW_OP_gt"; | |
13059 | case DW_OP_le: | |
13060 | return "DW_OP_le"; | |
13061 | case DW_OP_lt: | |
13062 | return "DW_OP_lt"; | |
13063 | case DW_OP_ne: | |
13064 | return "DW_OP_ne"; | |
13065 | case DW_OP_skip: | |
13066 | return "DW_OP_skip"; | |
13067 | case DW_OP_lit0: | |
13068 | return "DW_OP_lit0"; | |
13069 | case DW_OP_lit1: | |
13070 | return "DW_OP_lit1"; | |
13071 | case DW_OP_lit2: | |
13072 | return "DW_OP_lit2"; | |
13073 | case DW_OP_lit3: | |
13074 | return "DW_OP_lit3"; | |
13075 | case DW_OP_lit4: | |
13076 | return "DW_OP_lit4"; | |
13077 | case DW_OP_lit5: | |
13078 | return "DW_OP_lit5"; | |
13079 | case DW_OP_lit6: | |
13080 | return "DW_OP_lit6"; | |
13081 | case DW_OP_lit7: | |
13082 | return "DW_OP_lit7"; | |
13083 | case DW_OP_lit8: | |
13084 | return "DW_OP_lit8"; | |
13085 | case DW_OP_lit9: | |
13086 | return "DW_OP_lit9"; | |
13087 | case DW_OP_lit10: | |
13088 | return "DW_OP_lit10"; | |
13089 | case DW_OP_lit11: | |
13090 | return "DW_OP_lit11"; | |
13091 | case DW_OP_lit12: | |
13092 | return "DW_OP_lit12"; | |
13093 | case DW_OP_lit13: | |
13094 | return "DW_OP_lit13"; | |
13095 | case DW_OP_lit14: | |
13096 | return "DW_OP_lit14"; | |
13097 | case DW_OP_lit15: | |
13098 | return "DW_OP_lit15"; | |
13099 | case DW_OP_lit16: | |
13100 | return "DW_OP_lit16"; | |
13101 | case DW_OP_lit17: | |
13102 | return "DW_OP_lit17"; | |
13103 | case DW_OP_lit18: | |
13104 | return "DW_OP_lit18"; | |
13105 | case DW_OP_lit19: | |
13106 | return "DW_OP_lit19"; | |
13107 | case DW_OP_lit20: | |
13108 | return "DW_OP_lit20"; | |
13109 | case DW_OP_lit21: | |
13110 | return "DW_OP_lit21"; | |
13111 | case DW_OP_lit22: | |
13112 | return "DW_OP_lit22"; | |
13113 | case DW_OP_lit23: | |
13114 | return "DW_OP_lit23"; | |
13115 | case DW_OP_lit24: | |
13116 | return "DW_OP_lit24"; | |
13117 | case DW_OP_lit25: | |
13118 | return "DW_OP_lit25"; | |
13119 | case DW_OP_lit26: | |
13120 | return "DW_OP_lit26"; | |
13121 | case DW_OP_lit27: | |
13122 | return "DW_OP_lit27"; | |
13123 | case DW_OP_lit28: | |
13124 | return "DW_OP_lit28"; | |
13125 | case DW_OP_lit29: | |
13126 | return "DW_OP_lit29"; | |
13127 | case DW_OP_lit30: | |
13128 | return "DW_OP_lit30"; | |
13129 | case DW_OP_lit31: | |
13130 | return "DW_OP_lit31"; | |
13131 | case DW_OP_reg0: | |
13132 | return "DW_OP_reg0"; | |
13133 | case DW_OP_reg1: | |
13134 | return "DW_OP_reg1"; | |
13135 | case DW_OP_reg2: | |
13136 | return "DW_OP_reg2"; | |
13137 | case DW_OP_reg3: | |
13138 | return "DW_OP_reg3"; | |
13139 | case DW_OP_reg4: | |
13140 | return "DW_OP_reg4"; | |
13141 | case DW_OP_reg5: | |
13142 | return "DW_OP_reg5"; | |
13143 | case DW_OP_reg6: | |
13144 | return "DW_OP_reg6"; | |
13145 | case DW_OP_reg7: | |
13146 | return "DW_OP_reg7"; | |
13147 | case DW_OP_reg8: | |
13148 | return "DW_OP_reg8"; | |
13149 | case DW_OP_reg9: | |
13150 | return "DW_OP_reg9"; | |
13151 | case DW_OP_reg10: | |
13152 | return "DW_OP_reg10"; | |
13153 | case DW_OP_reg11: | |
13154 | return "DW_OP_reg11"; | |
13155 | case DW_OP_reg12: | |
13156 | return "DW_OP_reg12"; | |
13157 | case DW_OP_reg13: | |
13158 | return "DW_OP_reg13"; | |
13159 | case DW_OP_reg14: | |
13160 | return "DW_OP_reg14"; | |
13161 | case DW_OP_reg15: | |
13162 | return "DW_OP_reg15"; | |
13163 | case DW_OP_reg16: | |
13164 | return "DW_OP_reg16"; | |
13165 | case DW_OP_reg17: | |
13166 | return "DW_OP_reg17"; | |
13167 | case DW_OP_reg18: | |
13168 | return "DW_OP_reg18"; | |
13169 | case DW_OP_reg19: | |
13170 | return "DW_OP_reg19"; | |
13171 | case DW_OP_reg20: | |
13172 | return "DW_OP_reg20"; | |
13173 | case DW_OP_reg21: | |
13174 | return "DW_OP_reg21"; | |
13175 | case DW_OP_reg22: | |
13176 | return "DW_OP_reg22"; | |
13177 | case DW_OP_reg23: | |
13178 | return "DW_OP_reg23"; | |
13179 | case DW_OP_reg24: | |
13180 | return "DW_OP_reg24"; | |
13181 | case DW_OP_reg25: | |
13182 | return "DW_OP_reg25"; | |
13183 | case DW_OP_reg26: | |
13184 | return "DW_OP_reg26"; | |
13185 | case DW_OP_reg27: | |
13186 | return "DW_OP_reg27"; | |
13187 | case DW_OP_reg28: | |
13188 | return "DW_OP_reg28"; | |
13189 | case DW_OP_reg29: | |
13190 | return "DW_OP_reg29"; | |
13191 | case DW_OP_reg30: | |
13192 | return "DW_OP_reg30"; | |
13193 | case DW_OP_reg31: | |
13194 | return "DW_OP_reg31"; | |
13195 | case DW_OP_breg0: | |
13196 | return "DW_OP_breg0"; | |
13197 | case DW_OP_breg1: | |
13198 | return "DW_OP_breg1"; | |
13199 | case DW_OP_breg2: | |
13200 | return "DW_OP_breg2"; | |
13201 | case DW_OP_breg3: | |
13202 | return "DW_OP_breg3"; | |
13203 | case DW_OP_breg4: | |
13204 | return "DW_OP_breg4"; | |
13205 | case DW_OP_breg5: | |
13206 | return "DW_OP_breg5"; | |
13207 | case DW_OP_breg6: | |
13208 | return "DW_OP_breg6"; | |
13209 | case DW_OP_breg7: | |
13210 | return "DW_OP_breg7"; | |
13211 | case DW_OP_breg8: | |
13212 | return "DW_OP_breg8"; | |
13213 | case DW_OP_breg9: | |
13214 | return "DW_OP_breg9"; | |
13215 | case DW_OP_breg10: | |
13216 | return "DW_OP_breg10"; | |
13217 | case DW_OP_breg11: | |
13218 | return "DW_OP_breg11"; | |
13219 | case DW_OP_breg12: | |
13220 | return "DW_OP_breg12"; | |
13221 | case DW_OP_breg13: | |
13222 | return "DW_OP_breg13"; | |
13223 | case DW_OP_breg14: | |
13224 | return "DW_OP_breg14"; | |
13225 | case DW_OP_breg15: | |
13226 | return "DW_OP_breg15"; | |
13227 | case DW_OP_breg16: | |
13228 | return "DW_OP_breg16"; | |
13229 | case DW_OP_breg17: | |
13230 | return "DW_OP_breg17"; | |
13231 | case DW_OP_breg18: | |
13232 | return "DW_OP_breg18"; | |
13233 | case DW_OP_breg19: | |
13234 | return "DW_OP_breg19"; | |
13235 | case DW_OP_breg20: | |
13236 | return "DW_OP_breg20"; | |
13237 | case DW_OP_breg21: | |
13238 | return "DW_OP_breg21"; | |
13239 | case DW_OP_breg22: | |
13240 | return "DW_OP_breg22"; | |
13241 | case DW_OP_breg23: | |
13242 | return "DW_OP_breg23"; | |
13243 | case DW_OP_breg24: | |
13244 | return "DW_OP_breg24"; | |
13245 | case DW_OP_breg25: | |
13246 | return "DW_OP_breg25"; | |
13247 | case DW_OP_breg26: | |
13248 | return "DW_OP_breg26"; | |
13249 | case DW_OP_breg27: | |
13250 | return "DW_OP_breg27"; | |
13251 | case DW_OP_breg28: | |
13252 | return "DW_OP_breg28"; | |
13253 | case DW_OP_breg29: | |
13254 | return "DW_OP_breg29"; | |
13255 | case DW_OP_breg30: | |
13256 | return "DW_OP_breg30"; | |
13257 | case DW_OP_breg31: | |
13258 | return "DW_OP_breg31"; | |
13259 | case DW_OP_regx: | |
13260 | return "DW_OP_regx"; | |
13261 | case DW_OP_fbreg: | |
13262 | return "DW_OP_fbreg"; | |
13263 | case DW_OP_bregx: | |
13264 | return "DW_OP_bregx"; | |
13265 | case DW_OP_piece: | |
13266 | return "DW_OP_piece"; | |
13267 | case DW_OP_deref_size: | |
13268 | return "DW_OP_deref_size"; | |
13269 | case DW_OP_xderef_size: | |
13270 | return "DW_OP_xderef_size"; | |
13271 | case DW_OP_nop: | |
13272 | return "DW_OP_nop"; | |
b7619582 | 13273 | /* DWARF 3 extensions. */ |
ed348acc EZ |
13274 | case DW_OP_push_object_address: |
13275 | return "DW_OP_push_object_address"; | |
13276 | case DW_OP_call2: | |
13277 | return "DW_OP_call2"; | |
13278 | case DW_OP_call4: | |
13279 | return "DW_OP_call4"; | |
13280 | case DW_OP_call_ref: | |
13281 | return "DW_OP_call_ref"; | |
b7619582 GF |
13282 | case DW_OP_form_tls_address: |
13283 | return "DW_OP_form_tls_address"; | |
13284 | case DW_OP_call_frame_cfa: | |
13285 | return "DW_OP_call_frame_cfa"; | |
13286 | case DW_OP_bit_piece: | |
13287 | return "DW_OP_bit_piece"; | |
9eae7c52 TT |
13288 | /* DWARF 4 extensions. */ |
13289 | case DW_OP_implicit_value: | |
13290 | return "DW_OP_implicit_value"; | |
13291 | case DW_OP_stack_value: | |
13292 | return "DW_OP_stack_value"; | |
13293 | /* GNU extensions. */ | |
ed348acc EZ |
13294 | case DW_OP_GNU_push_tls_address: |
13295 | return "DW_OP_GNU_push_tls_address"; | |
42be36b3 CT |
13296 | case DW_OP_GNU_uninit: |
13297 | return "DW_OP_GNU_uninit"; | |
8cf6f0b1 TT |
13298 | case DW_OP_GNU_implicit_pointer: |
13299 | return "DW_OP_GNU_implicit_pointer"; | |
8a9b8146 TT |
13300 | case DW_OP_GNU_entry_value: |
13301 | return "DW_OP_GNU_entry_value"; | |
13302 | case DW_OP_GNU_const_type: | |
13303 | return "DW_OP_GNU_const_type"; | |
13304 | case DW_OP_GNU_regval_type: | |
13305 | return "DW_OP_GNU_regval_type"; | |
13306 | case DW_OP_GNU_deref_type: | |
13307 | return "DW_OP_GNU_deref_type"; | |
13308 | case DW_OP_GNU_convert: | |
13309 | return "DW_OP_GNU_convert"; | |
13310 | case DW_OP_GNU_reinterpret: | |
13311 | return "DW_OP_GNU_reinterpret"; | |
c906108c | 13312 | default: |
b1bfef65 | 13313 | return NULL; |
c906108c SS |
13314 | } |
13315 | } | |
13316 | ||
13317 | static char * | |
fba45db2 | 13318 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
13319 | { |
13320 | if (mybool) | |
13321 | return "TRUE"; | |
13322 | else | |
13323 | return "FALSE"; | |
13324 | } | |
13325 | ||
13326 | /* Convert a DWARF type code into its string name. */ | |
13327 | ||
13328 | static char * | |
aa1ee363 | 13329 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
13330 | { |
13331 | switch (enc) | |
13332 | { | |
b7619582 GF |
13333 | case DW_ATE_void: |
13334 | return "DW_ATE_void"; | |
c906108c SS |
13335 | case DW_ATE_address: |
13336 | return "DW_ATE_address"; | |
13337 | case DW_ATE_boolean: | |
13338 | return "DW_ATE_boolean"; | |
13339 | case DW_ATE_complex_float: | |
13340 | return "DW_ATE_complex_float"; | |
13341 | case DW_ATE_float: | |
13342 | return "DW_ATE_float"; | |
13343 | case DW_ATE_signed: | |
13344 | return "DW_ATE_signed"; | |
13345 | case DW_ATE_signed_char: | |
13346 | return "DW_ATE_signed_char"; | |
13347 | case DW_ATE_unsigned: | |
13348 | return "DW_ATE_unsigned"; | |
13349 | case DW_ATE_unsigned_char: | |
13350 | return "DW_ATE_unsigned_char"; | |
b7619582 | 13351 | /* DWARF 3. */ |
d9fa45fe DC |
13352 | case DW_ATE_imaginary_float: |
13353 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
13354 | case DW_ATE_packed_decimal: |
13355 | return "DW_ATE_packed_decimal"; | |
13356 | case DW_ATE_numeric_string: | |
13357 | return "DW_ATE_numeric_string"; | |
13358 | case DW_ATE_edited: | |
13359 | return "DW_ATE_edited"; | |
13360 | case DW_ATE_signed_fixed: | |
13361 | return "DW_ATE_signed_fixed"; | |
13362 | case DW_ATE_unsigned_fixed: | |
13363 | return "DW_ATE_unsigned_fixed"; | |
13364 | case DW_ATE_decimal_float: | |
13365 | return "DW_ATE_decimal_float"; | |
75079b2b TT |
13366 | /* DWARF 4. */ |
13367 | case DW_ATE_UTF: | |
13368 | return "DW_ATE_UTF"; | |
b7619582 GF |
13369 | /* HP extensions. */ |
13370 | case DW_ATE_HP_float80: | |
13371 | return "DW_ATE_HP_float80"; | |
13372 | case DW_ATE_HP_complex_float80: | |
13373 | return "DW_ATE_HP_complex_float80"; | |
13374 | case DW_ATE_HP_float128: | |
13375 | return "DW_ATE_HP_float128"; | |
13376 | case DW_ATE_HP_complex_float128: | |
13377 | return "DW_ATE_HP_complex_float128"; | |
13378 | case DW_ATE_HP_floathpintel: | |
13379 | return "DW_ATE_HP_floathpintel"; | |
13380 | case DW_ATE_HP_imaginary_float80: | |
13381 | return "DW_ATE_HP_imaginary_float80"; | |
13382 | case DW_ATE_HP_imaginary_float128: | |
13383 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
13384 | default: |
13385 | return "DW_ATE_<unknown>"; | |
13386 | } | |
13387 | } | |
13388 | ||
0963b4bd | 13389 | /* Convert a DWARF call frame info operation to its string name. */ |
c906108c SS |
13390 | |
13391 | #if 0 | |
13392 | static char * | |
aa1ee363 | 13393 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
13394 | { |
13395 | switch (cfi_opc) | |
13396 | { | |
13397 | case DW_CFA_advance_loc: | |
13398 | return "DW_CFA_advance_loc"; | |
13399 | case DW_CFA_offset: | |
13400 | return "DW_CFA_offset"; | |
13401 | case DW_CFA_restore: | |
13402 | return "DW_CFA_restore"; | |
13403 | case DW_CFA_nop: | |
13404 | return "DW_CFA_nop"; | |
13405 | case DW_CFA_set_loc: | |
13406 | return "DW_CFA_set_loc"; | |
13407 | case DW_CFA_advance_loc1: | |
13408 | return "DW_CFA_advance_loc1"; | |
13409 | case DW_CFA_advance_loc2: | |
13410 | return "DW_CFA_advance_loc2"; | |
13411 | case DW_CFA_advance_loc4: | |
13412 | return "DW_CFA_advance_loc4"; | |
13413 | case DW_CFA_offset_extended: | |
13414 | return "DW_CFA_offset_extended"; | |
13415 | case DW_CFA_restore_extended: | |
13416 | return "DW_CFA_restore_extended"; | |
13417 | case DW_CFA_undefined: | |
13418 | return "DW_CFA_undefined"; | |
13419 | case DW_CFA_same_value: | |
13420 | return "DW_CFA_same_value"; | |
13421 | case DW_CFA_register: | |
13422 | return "DW_CFA_register"; | |
13423 | case DW_CFA_remember_state: | |
13424 | return "DW_CFA_remember_state"; | |
13425 | case DW_CFA_restore_state: | |
13426 | return "DW_CFA_restore_state"; | |
13427 | case DW_CFA_def_cfa: | |
13428 | return "DW_CFA_def_cfa"; | |
13429 | case DW_CFA_def_cfa_register: | |
13430 | return "DW_CFA_def_cfa_register"; | |
13431 | case DW_CFA_def_cfa_offset: | |
13432 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 13433 | /* DWARF 3. */ |
985cb1a3 JM |
13434 | case DW_CFA_def_cfa_expression: |
13435 | return "DW_CFA_def_cfa_expression"; | |
13436 | case DW_CFA_expression: | |
13437 | return "DW_CFA_expression"; | |
13438 | case DW_CFA_offset_extended_sf: | |
13439 | return "DW_CFA_offset_extended_sf"; | |
13440 | case DW_CFA_def_cfa_sf: | |
13441 | return "DW_CFA_def_cfa_sf"; | |
13442 | case DW_CFA_def_cfa_offset_sf: | |
13443 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
13444 | case DW_CFA_val_offset: |
13445 | return "DW_CFA_val_offset"; | |
13446 | case DW_CFA_val_offset_sf: | |
13447 | return "DW_CFA_val_offset_sf"; | |
13448 | case DW_CFA_val_expression: | |
13449 | return "DW_CFA_val_expression"; | |
13450 | /* SGI/MIPS specific. */ | |
c906108c SS |
13451 | case DW_CFA_MIPS_advance_loc8: |
13452 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 13453 | /* GNU extensions. */ |
985cb1a3 JM |
13454 | case DW_CFA_GNU_window_save: |
13455 | return "DW_CFA_GNU_window_save"; | |
13456 | case DW_CFA_GNU_args_size: | |
13457 | return "DW_CFA_GNU_args_size"; | |
13458 | case DW_CFA_GNU_negative_offset_extended: | |
13459 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
13460 | default: |
13461 | return "DW_CFA_<unknown>"; | |
13462 | } | |
13463 | } | |
13464 | #endif | |
13465 | ||
f9aca02d | 13466 | static void |
d97bc12b | 13467 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
13468 | { |
13469 | unsigned int i; | |
13470 | ||
d97bc12b DE |
13471 | print_spaces (indent, f); |
13472 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
c906108c | 13473 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
d97bc12b DE |
13474 | |
13475 | if (die->parent != NULL) | |
13476 | { | |
13477 | print_spaces (indent, f); | |
13478 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
13479 | die->parent->offset); | |
13480 | } | |
13481 | ||
13482 | print_spaces (indent, f); | |
13483 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 13484 | dwarf_bool_name (die->child != NULL)); |
c906108c | 13485 | |
d97bc12b DE |
13486 | print_spaces (indent, f); |
13487 | fprintf_unfiltered (f, " attributes:\n"); | |
13488 | ||
c906108c SS |
13489 | for (i = 0; i < die->num_attrs; ++i) |
13490 | { | |
d97bc12b DE |
13491 | print_spaces (indent, f); |
13492 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
13493 | dwarf_attr_name (die->attrs[i].name), |
13494 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 13495 | |
c906108c SS |
13496 | switch (die->attrs[i].form) |
13497 | { | |
13498 | case DW_FORM_ref_addr: | |
13499 | case DW_FORM_addr: | |
d97bc12b | 13500 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 13501 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
13502 | break; |
13503 | case DW_FORM_block2: | |
13504 | case DW_FORM_block4: | |
13505 | case DW_FORM_block: | |
13506 | case DW_FORM_block1: | |
3e43a32a MS |
13507 | fprintf_unfiltered (f, "block: size %d", |
13508 | DW_BLOCK (&die->attrs[i])->size); | |
c906108c | 13509 | break; |
2dc7f7b3 TT |
13510 | case DW_FORM_exprloc: |
13511 | fprintf_unfiltered (f, "expression: size %u", | |
13512 | DW_BLOCK (&die->attrs[i])->size); | |
13513 | break; | |
10b3939b DJ |
13514 | case DW_FORM_ref1: |
13515 | case DW_FORM_ref2: | |
13516 | case DW_FORM_ref4: | |
d97bc12b | 13517 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
10b3939b DJ |
13518 | (long) (DW_ADDR (&die->attrs[i]))); |
13519 | break; | |
c906108c SS |
13520 | case DW_FORM_data1: |
13521 | case DW_FORM_data2: | |
13522 | case DW_FORM_data4: | |
ce5d95e1 | 13523 | case DW_FORM_data8: |
c906108c SS |
13524 | case DW_FORM_udata: |
13525 | case DW_FORM_sdata: | |
43bbcdc2 PH |
13526 | fprintf_unfiltered (f, "constant: %s", |
13527 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 13528 | break; |
2dc7f7b3 TT |
13529 | case DW_FORM_sec_offset: |
13530 | fprintf_unfiltered (f, "section offset: %s", | |
13531 | pulongest (DW_UNSND (&die->attrs[i]))); | |
13532 | break; | |
55f1336d | 13533 | case DW_FORM_ref_sig8: |
348e048f DE |
13534 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) |
13535 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
b3c8eb43 | 13536 | DW_SIGNATURED_TYPE (&die->attrs[i])->per_cu.offset); |
348e048f DE |
13537 | else |
13538 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
13539 | break; | |
c906108c | 13540 | case DW_FORM_string: |
4bdf3d34 | 13541 | case DW_FORM_strp: |
8285870a | 13542 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 13543 | DW_STRING (&die->attrs[i]) |
8285870a JK |
13544 | ? DW_STRING (&die->attrs[i]) : "", |
13545 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
13546 | break; |
13547 | case DW_FORM_flag: | |
13548 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 13549 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 13550 | else |
d97bc12b | 13551 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 13552 | break; |
2dc7f7b3 TT |
13553 | case DW_FORM_flag_present: |
13554 | fprintf_unfiltered (f, "flag: TRUE"); | |
13555 | break; | |
a8329558 | 13556 | case DW_FORM_indirect: |
0963b4bd MS |
13557 | /* The reader will have reduced the indirect form to |
13558 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
13559 | fprintf_unfiltered (f, |
13560 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 13561 | break; |
c906108c | 13562 | default: |
d97bc12b | 13563 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 13564 | die->attrs[i].form); |
d97bc12b | 13565 | break; |
c906108c | 13566 | } |
d97bc12b | 13567 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
13568 | } |
13569 | } | |
13570 | ||
f9aca02d | 13571 | static void |
d97bc12b | 13572 | dump_die_for_error (struct die_info *die) |
c906108c | 13573 | { |
d97bc12b DE |
13574 | dump_die_shallow (gdb_stderr, 0, die); |
13575 | } | |
13576 | ||
13577 | static void | |
13578 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
13579 | { | |
13580 | int indent = level * 4; | |
13581 | ||
13582 | gdb_assert (die != NULL); | |
13583 | ||
13584 | if (level >= max_level) | |
13585 | return; | |
13586 | ||
13587 | dump_die_shallow (f, indent, die); | |
13588 | ||
13589 | if (die->child != NULL) | |
c906108c | 13590 | { |
d97bc12b DE |
13591 | print_spaces (indent, f); |
13592 | fprintf_unfiltered (f, " Children:"); | |
13593 | if (level + 1 < max_level) | |
13594 | { | |
13595 | fprintf_unfiltered (f, "\n"); | |
13596 | dump_die_1 (f, level + 1, max_level, die->child); | |
13597 | } | |
13598 | else | |
13599 | { | |
3e43a32a MS |
13600 | fprintf_unfiltered (f, |
13601 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
13602 | } |
13603 | } | |
13604 | ||
13605 | if (die->sibling != NULL && level > 0) | |
13606 | { | |
13607 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
13608 | } |
13609 | } | |
13610 | ||
d97bc12b DE |
13611 | /* This is called from the pdie macro in gdbinit.in. |
13612 | It's not static so gcc will keep a copy callable from gdb. */ | |
13613 | ||
13614 | void | |
13615 | dump_die (struct die_info *die, int max_level) | |
13616 | { | |
13617 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
13618 | } | |
13619 | ||
f9aca02d | 13620 | static void |
51545339 | 13621 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13622 | { |
51545339 | 13623 | void **slot; |
c906108c | 13624 | |
51545339 DJ |
13625 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset, INSERT); |
13626 | ||
13627 | *slot = die; | |
c906108c SS |
13628 | } |
13629 | ||
93311388 DE |
13630 | static int |
13631 | is_ref_attr (struct attribute *attr) | |
c906108c | 13632 | { |
c906108c SS |
13633 | switch (attr->form) |
13634 | { | |
13635 | case DW_FORM_ref_addr: | |
c906108c SS |
13636 | case DW_FORM_ref1: |
13637 | case DW_FORM_ref2: | |
13638 | case DW_FORM_ref4: | |
613e1657 | 13639 | case DW_FORM_ref8: |
c906108c | 13640 | case DW_FORM_ref_udata: |
93311388 | 13641 | return 1; |
c906108c | 13642 | default: |
93311388 | 13643 | return 0; |
c906108c | 13644 | } |
93311388 DE |
13645 | } |
13646 | ||
13647 | static unsigned int | |
13648 | dwarf2_get_ref_die_offset (struct attribute *attr) | |
13649 | { | |
13650 | if (is_ref_attr (attr)) | |
13651 | return DW_ADDR (attr); | |
13652 | ||
13653 | complaint (&symfile_complaints, | |
13654 | _("unsupported die ref attribute form: '%s'"), | |
13655 | dwarf_form_name (attr->form)); | |
13656 | return 0; | |
c906108c SS |
13657 | } |
13658 | ||
43bbcdc2 PH |
13659 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
13660 | * the value held by the attribute is not constant. */ | |
a02abb62 | 13661 | |
43bbcdc2 | 13662 | static LONGEST |
a02abb62 JB |
13663 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
13664 | { | |
13665 | if (attr->form == DW_FORM_sdata) | |
13666 | return DW_SND (attr); | |
13667 | else if (attr->form == DW_FORM_udata | |
13668 | || attr->form == DW_FORM_data1 | |
13669 | || attr->form == DW_FORM_data2 | |
13670 | || attr->form == DW_FORM_data4 | |
13671 | || attr->form == DW_FORM_data8) | |
13672 | return DW_UNSND (attr); | |
13673 | else | |
13674 | { | |
3e43a32a MS |
13675 | complaint (&symfile_complaints, |
13676 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
13677 | dwarf_form_name (attr->form)); |
13678 | return default_value; | |
13679 | } | |
13680 | } | |
13681 | ||
03dd20cc | 13682 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
348e048f DE |
13683 | unit and add it to our queue. |
13684 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
13685 | meaning either PER_CU is already queued or it is already loaded. */ | |
03dd20cc | 13686 | |
348e048f | 13687 | static int |
03dd20cc DJ |
13688 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, |
13689 | struct dwarf2_per_cu_data *per_cu) | |
13690 | { | |
98bfdba5 PA |
13691 | /* We may arrive here during partial symbol reading, if we need full |
13692 | DIEs to process an unusual case (e.g. template arguments). Do | |
13693 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
13694 | if (dwarf2_per_objfile->reading_partial_symbols) | |
13695 | { | |
13696 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
13697 | return 1; | |
13698 | return 0; | |
13699 | } | |
13700 | ||
03dd20cc DJ |
13701 | /* Mark the dependence relation so that we don't flush PER_CU |
13702 | too early. */ | |
13703 | dwarf2_add_dependence (this_cu, per_cu); | |
13704 | ||
13705 | /* If it's already on the queue, we have nothing to do. */ | |
13706 | if (per_cu->queued) | |
348e048f | 13707 | return 0; |
03dd20cc DJ |
13708 | |
13709 | /* If the compilation unit is already loaded, just mark it as | |
13710 | used. */ | |
13711 | if (per_cu->cu != NULL) | |
13712 | { | |
13713 | per_cu->cu->last_used = 0; | |
348e048f | 13714 | return 0; |
03dd20cc DJ |
13715 | } |
13716 | ||
13717 | /* Add it to the queue. */ | |
13718 | queue_comp_unit (per_cu, this_cu->objfile); | |
348e048f DE |
13719 | |
13720 | return 1; | |
13721 | } | |
13722 | ||
13723 | /* Follow reference or signature attribute ATTR of SRC_DIE. | |
13724 | On entry *REF_CU is the CU of SRC_DIE. | |
13725 | On exit *REF_CU is the CU of the result. */ | |
13726 | ||
13727 | static struct die_info * | |
13728 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
13729 | struct dwarf2_cu **ref_cu) | |
13730 | { | |
13731 | struct die_info *die; | |
13732 | ||
13733 | if (is_ref_attr (attr)) | |
13734 | die = follow_die_ref (src_die, attr, ref_cu); | |
55f1336d | 13735 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
13736 | die = follow_die_sig (src_die, attr, ref_cu); |
13737 | else | |
13738 | { | |
13739 | dump_die_for_error (src_die); | |
13740 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
13741 | (*ref_cu)->objfile->name); | |
13742 | } | |
13743 | ||
13744 | return die; | |
03dd20cc DJ |
13745 | } |
13746 | ||
5c631832 | 13747 | /* Follow reference OFFSET. |
673bfd45 DE |
13748 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
13749 | On exit *REF_CU is the CU of the result. | |
13750 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 13751 | |
f9aca02d | 13752 | static struct die_info * |
5c631832 | 13753 | follow_die_offset (unsigned int offset, struct dwarf2_cu **ref_cu) |
c906108c | 13754 | { |
10b3939b | 13755 | struct die_info temp_die; |
f2f0e013 | 13756 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 13757 | |
348e048f DE |
13758 | gdb_assert (cu->per_cu != NULL); |
13759 | ||
98bfdba5 PA |
13760 | target_cu = cu; |
13761 | ||
348e048f DE |
13762 | if (cu->per_cu->from_debug_types) |
13763 | { | |
13764 | /* .debug_types CUs cannot reference anything outside their CU. | |
13765 | If they need to, they have to reference a signatured type via | |
55f1336d | 13766 | DW_FORM_ref_sig8. */ |
348e048f | 13767 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 13768 | return NULL; |
348e048f DE |
13769 | } |
13770 | else if (! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
13771 | { |
13772 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 13773 | |
45452591 | 13774 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
13775 | |
13776 | /* If necessary, add it to the queue and load its DIEs. */ | |
348e048f DE |
13777 | if (maybe_queue_comp_unit (cu, per_cu)) |
13778 | load_full_comp_unit (per_cu, cu->objfile); | |
03dd20cc | 13779 | |
10b3939b DJ |
13780 | target_cu = per_cu->cu; |
13781 | } | |
98bfdba5 PA |
13782 | else if (cu->dies == NULL) |
13783 | { | |
13784 | /* We're loading full DIEs during partial symbol reading. */ | |
13785 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
13786 | load_full_comp_unit (cu->per_cu, cu->objfile); | |
13787 | } | |
c906108c | 13788 | |
f2f0e013 | 13789 | *ref_cu = target_cu; |
51545339 | 13790 | temp_die.offset = offset; |
5c631832 JK |
13791 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset); |
13792 | } | |
10b3939b | 13793 | |
5c631832 JK |
13794 | /* Follow reference attribute ATTR of SRC_DIE. |
13795 | On entry *REF_CU is the CU of SRC_DIE. | |
13796 | On exit *REF_CU is the CU of the result. */ | |
13797 | ||
13798 | static struct die_info * | |
13799 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
13800 | struct dwarf2_cu **ref_cu) | |
13801 | { | |
13802 | unsigned int offset = dwarf2_get_ref_die_offset (attr); | |
13803 | struct dwarf2_cu *cu = *ref_cu; | |
13804 | struct die_info *die; | |
13805 | ||
13806 | die = follow_die_offset (offset, ref_cu); | |
13807 | if (!die) | |
13808 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
13809 | "at 0x%x [in module %s]"), | |
13810 | offset, src_die->offset, cu->objfile->name); | |
348e048f | 13811 | |
5c631832 JK |
13812 | return die; |
13813 | } | |
13814 | ||
13815 | /* Return DWARF block and its CU referenced by OFFSET at PER_CU. Returned | |
13816 | value is intended for DW_OP_call*. */ | |
13817 | ||
13818 | struct dwarf2_locexpr_baton | |
13819 | dwarf2_fetch_die_location_block (unsigned int offset, | |
8cf6f0b1 TT |
13820 | struct dwarf2_per_cu_data *per_cu, |
13821 | CORE_ADDR (*get_frame_pc) (void *baton), | |
13822 | void *baton) | |
5c631832 JK |
13823 | { |
13824 | struct dwarf2_cu *cu = per_cu->cu; | |
13825 | struct die_info *die; | |
13826 | struct attribute *attr; | |
13827 | struct dwarf2_locexpr_baton retval; | |
13828 | ||
8cf6f0b1 TT |
13829 | dw2_setup (per_cu->objfile); |
13830 | ||
5c631832 JK |
13831 | die = follow_die_offset (offset, &cu); |
13832 | if (!die) | |
13833 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
13834 | offset, per_cu->cu->objfile->name); | |
13835 | ||
13836 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
13837 | if (!attr) | |
13838 | { | |
13839 | /* DWARF: "If there is no such attribute, then there is no effect.". */ | |
13840 | ||
13841 | retval.data = NULL; | |
13842 | retval.size = 0; | |
13843 | } | |
8cf6f0b1 TT |
13844 | else if (attr_form_is_section_offset (attr)) |
13845 | { | |
13846 | struct dwarf2_loclist_baton loclist_baton; | |
13847 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
13848 | size_t size; | |
13849 | ||
13850 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
13851 | ||
13852 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
13853 | &size, pc); | |
13854 | retval.size = size; | |
13855 | } | |
5c631832 JK |
13856 | else |
13857 | { | |
13858 | if (!attr_form_is_block (attr)) | |
13859 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
13860 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
13861 | offset, per_cu->cu->objfile->name); | |
13862 | ||
13863 | retval.data = DW_BLOCK (attr)->data; | |
13864 | retval.size = DW_BLOCK (attr)->size; | |
13865 | } | |
13866 | retval.per_cu = cu->per_cu; | |
13867 | return retval; | |
348e048f DE |
13868 | } |
13869 | ||
8a9b8146 TT |
13870 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
13871 | PER_CU. */ | |
13872 | ||
13873 | struct type * | |
13874 | dwarf2_get_die_type (unsigned int die_offset, | |
13875 | struct dwarf2_per_cu_data *per_cu) | |
13876 | { | |
8a9b8146 | 13877 | dw2_setup (per_cu->objfile); |
9ff3b74f | 13878 | return get_die_type_at_offset (die_offset, per_cu); |
8a9b8146 TT |
13879 | } |
13880 | ||
348e048f DE |
13881 | /* Follow the signature attribute ATTR in SRC_DIE. |
13882 | On entry *REF_CU is the CU of SRC_DIE. | |
13883 | On exit *REF_CU is the CU of the result. */ | |
13884 | ||
13885 | static struct die_info * | |
13886 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
13887 | struct dwarf2_cu **ref_cu) | |
13888 | { | |
13889 | struct objfile *objfile = (*ref_cu)->objfile; | |
13890 | struct die_info temp_die; | |
13891 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
13892 | struct dwarf2_cu *sig_cu; | |
13893 | struct die_info *die; | |
13894 | ||
13895 | /* sig_type will be NULL if the signatured type is missing from | |
13896 | the debug info. */ | |
13897 | if (sig_type == NULL) | |
13898 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
13899 | "at 0x%x [in module %s]"), | |
13900 | src_die->offset, objfile->name); | |
13901 | ||
13902 | /* If necessary, add it to the queue and load its DIEs. */ | |
13903 | ||
13904 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu)) | |
13905 | read_signatured_type (objfile, sig_type); | |
13906 | ||
13907 | gdb_assert (sig_type->per_cu.cu != NULL); | |
13908 | ||
13909 | sig_cu = sig_type->per_cu.cu; | |
13910 | temp_die.offset = sig_cu->header.offset + sig_type->type_offset; | |
13911 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, temp_die.offset); | |
13912 | if (die) | |
13913 | { | |
13914 | *ref_cu = sig_cu; | |
13915 | return die; | |
13916 | } | |
13917 | ||
3e43a32a MS |
13918 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced " |
13919 | "from DIE at 0x%x [in module %s]"), | |
348e048f DE |
13920 | sig_type->type_offset, src_die->offset, objfile->name); |
13921 | } | |
13922 | ||
13923 | /* Given an offset of a signatured type, return its signatured_type. */ | |
13924 | ||
13925 | static struct signatured_type * | |
13926 | lookup_signatured_type_at_offset (struct objfile *objfile, unsigned int offset) | |
13927 | { | |
13928 | gdb_byte *info_ptr = dwarf2_per_objfile->types.buffer + offset; | |
13929 | unsigned int length, initial_length_size; | |
13930 | unsigned int sig_offset; | |
13931 | struct signatured_type find_entry, *type_sig; | |
13932 | ||
13933 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
13934 | sig_offset = (initial_length_size | |
13935 | + 2 /*version*/ | |
13936 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
13937 | + 1 /*address_size*/); | |
13938 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
13939 | type_sig = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
13940 | ||
13941 | /* This is only used to lookup previously recorded types. | |
13942 | If we didn't find it, it's our bug. */ | |
13943 | gdb_assert (type_sig != NULL); | |
b3c8eb43 | 13944 | gdb_assert (offset == type_sig->per_cu.offset); |
348e048f DE |
13945 | |
13946 | return type_sig; | |
13947 | } | |
13948 | ||
13949 | /* Read in signatured type at OFFSET and build its CU and die(s). */ | |
13950 | ||
13951 | static void | |
13952 | read_signatured_type_at_offset (struct objfile *objfile, | |
13953 | unsigned int offset) | |
13954 | { | |
13955 | struct signatured_type *type_sig; | |
13956 | ||
be391dca TT |
13957 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
13958 | ||
348e048f DE |
13959 | /* We have the section offset, but we need the signature to do the |
13960 | hash table lookup. */ | |
13961 | type_sig = lookup_signatured_type_at_offset (objfile, offset); | |
13962 | ||
13963 | gdb_assert (type_sig->per_cu.cu == NULL); | |
13964 | ||
13965 | read_signatured_type (objfile, type_sig); | |
13966 | ||
13967 | gdb_assert (type_sig->per_cu.cu != NULL); | |
13968 | } | |
13969 | ||
13970 | /* Read in a signatured type and build its CU and DIEs. */ | |
13971 | ||
13972 | static void | |
13973 | read_signatured_type (struct objfile *objfile, | |
13974 | struct signatured_type *type_sig) | |
13975 | { | |
1fd400ff | 13976 | gdb_byte *types_ptr; |
348e048f DE |
13977 | struct die_reader_specs reader_specs; |
13978 | struct dwarf2_cu *cu; | |
13979 | ULONGEST signature; | |
13980 | struct cleanup *back_to, *free_cu_cleanup; | |
348e048f | 13981 | |
1fd400ff | 13982 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
b3c8eb43 | 13983 | types_ptr = dwarf2_per_objfile->types.buffer + type_sig->per_cu.offset; |
1fd400ff | 13984 | |
348e048f DE |
13985 | gdb_assert (type_sig->per_cu.cu == NULL); |
13986 | ||
9816fde3 JK |
13987 | cu = xmalloc (sizeof (*cu)); |
13988 | init_one_comp_unit (cu, objfile); | |
13989 | ||
348e048f DE |
13990 | type_sig->per_cu.cu = cu; |
13991 | cu->per_cu = &type_sig->per_cu; | |
13992 | ||
13993 | /* If an error occurs while loading, release our storage. */ | |
13994 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
13995 | ||
13996 | types_ptr = read_type_comp_unit_head (&cu->header, &signature, | |
13997 | types_ptr, objfile->obfd); | |
13998 | gdb_assert (signature == type_sig->signature); | |
13999 | ||
14000 | cu->die_hash | |
14001 | = htab_create_alloc_ex (cu->header.length / 12, | |
14002 | die_hash, | |
14003 | die_eq, | |
14004 | NULL, | |
14005 | &cu->comp_unit_obstack, | |
14006 | hashtab_obstack_allocate, | |
14007 | dummy_obstack_deallocate); | |
14008 | ||
14009 | dwarf2_read_abbrevs (cu->objfile->obfd, cu); | |
14010 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
14011 | ||
14012 | init_cu_die_reader (&reader_specs, cu); | |
14013 | ||
14014 | cu->dies = read_die_and_children (&reader_specs, types_ptr, &types_ptr, | |
14015 | NULL /*parent*/); | |
14016 | ||
14017 | /* We try not to read any attributes in this function, because not | |
14018 | all objfiles needed for references have been loaded yet, and symbol | |
14019 | table processing isn't initialized. But we have to set the CU language, | |
14020 | or we won't be able to build types correctly. */ | |
9816fde3 | 14021 | prepare_one_comp_unit (cu, cu->dies); |
348e048f DE |
14022 | |
14023 | do_cleanups (back_to); | |
14024 | ||
14025 | /* We've successfully allocated this compilation unit. Let our caller | |
14026 | clean it up when finished with it. */ | |
14027 | discard_cleanups (free_cu_cleanup); | |
14028 | ||
14029 | type_sig->per_cu.cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
14030 | dwarf2_per_objfile->read_in_chain = &type_sig->per_cu; | |
c906108c SS |
14031 | } |
14032 | ||
c906108c SS |
14033 | /* Decode simple location descriptions. |
14034 | Given a pointer to a dwarf block that defines a location, compute | |
14035 | the location and return the value. | |
14036 | ||
4cecd739 DJ |
14037 | NOTE drow/2003-11-18: This function is called in two situations |
14038 | now: for the address of static or global variables (partial symbols | |
14039 | only) and for offsets into structures which are expected to be | |
14040 | (more or less) constant. The partial symbol case should go away, | |
14041 | and only the constant case should remain. That will let this | |
14042 | function complain more accurately. A few special modes are allowed | |
14043 | without complaint for global variables (for instance, global | |
14044 | register values and thread-local values). | |
c906108c SS |
14045 | |
14046 | A location description containing no operations indicates that the | |
4cecd739 | 14047 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
14048 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
14049 | callers will only want a very basic result and this can become a | |
14050 | complaint. | |
c906108c | 14051 | |
d53d4ac5 | 14052 | Note that stack[0] is unused except as a default error return. */ |
c906108c SS |
14053 | |
14054 | static CORE_ADDR | |
e7c27a73 | 14055 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 14056 | { |
e7c27a73 | 14057 | struct objfile *objfile = cu->objfile; |
c906108c SS |
14058 | int i; |
14059 | int size = blk->size; | |
fe1b8b76 | 14060 | gdb_byte *data = blk->data; |
c906108c SS |
14061 | CORE_ADDR stack[64]; |
14062 | int stacki; | |
14063 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 14064 | gdb_byte op; |
c906108c SS |
14065 | |
14066 | i = 0; | |
14067 | stacki = 0; | |
14068 | stack[stacki] = 0; | |
d53d4ac5 | 14069 | stack[++stacki] = 0; |
c906108c SS |
14070 | |
14071 | while (i < size) | |
14072 | { | |
c906108c SS |
14073 | op = data[i++]; |
14074 | switch (op) | |
14075 | { | |
f1bea926 JM |
14076 | case DW_OP_lit0: |
14077 | case DW_OP_lit1: | |
14078 | case DW_OP_lit2: | |
14079 | case DW_OP_lit3: | |
14080 | case DW_OP_lit4: | |
14081 | case DW_OP_lit5: | |
14082 | case DW_OP_lit6: | |
14083 | case DW_OP_lit7: | |
14084 | case DW_OP_lit8: | |
14085 | case DW_OP_lit9: | |
14086 | case DW_OP_lit10: | |
14087 | case DW_OP_lit11: | |
14088 | case DW_OP_lit12: | |
14089 | case DW_OP_lit13: | |
14090 | case DW_OP_lit14: | |
14091 | case DW_OP_lit15: | |
14092 | case DW_OP_lit16: | |
14093 | case DW_OP_lit17: | |
14094 | case DW_OP_lit18: | |
14095 | case DW_OP_lit19: | |
14096 | case DW_OP_lit20: | |
14097 | case DW_OP_lit21: | |
14098 | case DW_OP_lit22: | |
14099 | case DW_OP_lit23: | |
14100 | case DW_OP_lit24: | |
14101 | case DW_OP_lit25: | |
14102 | case DW_OP_lit26: | |
14103 | case DW_OP_lit27: | |
14104 | case DW_OP_lit28: | |
14105 | case DW_OP_lit29: | |
14106 | case DW_OP_lit30: | |
14107 | case DW_OP_lit31: | |
14108 | stack[++stacki] = op - DW_OP_lit0; | |
14109 | break; | |
14110 | ||
c906108c SS |
14111 | case DW_OP_reg0: |
14112 | case DW_OP_reg1: | |
14113 | case DW_OP_reg2: | |
14114 | case DW_OP_reg3: | |
14115 | case DW_OP_reg4: | |
14116 | case DW_OP_reg5: | |
14117 | case DW_OP_reg6: | |
14118 | case DW_OP_reg7: | |
14119 | case DW_OP_reg8: | |
14120 | case DW_OP_reg9: | |
14121 | case DW_OP_reg10: | |
14122 | case DW_OP_reg11: | |
14123 | case DW_OP_reg12: | |
14124 | case DW_OP_reg13: | |
14125 | case DW_OP_reg14: | |
14126 | case DW_OP_reg15: | |
14127 | case DW_OP_reg16: | |
14128 | case DW_OP_reg17: | |
14129 | case DW_OP_reg18: | |
14130 | case DW_OP_reg19: | |
14131 | case DW_OP_reg20: | |
14132 | case DW_OP_reg21: | |
14133 | case DW_OP_reg22: | |
14134 | case DW_OP_reg23: | |
14135 | case DW_OP_reg24: | |
14136 | case DW_OP_reg25: | |
14137 | case DW_OP_reg26: | |
14138 | case DW_OP_reg27: | |
14139 | case DW_OP_reg28: | |
14140 | case DW_OP_reg29: | |
14141 | case DW_OP_reg30: | |
14142 | case DW_OP_reg31: | |
c906108c | 14143 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
14144 | if (i < size) |
14145 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
14146 | break; |
14147 | ||
14148 | case DW_OP_regx: | |
c906108c SS |
14149 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
14150 | i += bytes_read; | |
c906108c | 14151 | stack[++stacki] = unsnd; |
4cecd739 DJ |
14152 | if (i < size) |
14153 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
14154 | break; |
14155 | ||
14156 | case DW_OP_addr: | |
107d2387 | 14157 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 14158 | cu, &bytes_read); |
107d2387 | 14159 | i += bytes_read; |
c906108c SS |
14160 | break; |
14161 | ||
14162 | case DW_OP_const1u: | |
14163 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
14164 | i += 1; | |
14165 | break; | |
14166 | ||
14167 | case DW_OP_const1s: | |
14168 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
14169 | i += 1; | |
14170 | break; | |
14171 | ||
14172 | case DW_OP_const2u: | |
14173 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
14174 | i += 2; | |
14175 | break; | |
14176 | ||
14177 | case DW_OP_const2s: | |
14178 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
14179 | i += 2; | |
14180 | break; | |
14181 | ||
14182 | case DW_OP_const4u: | |
14183 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
14184 | i += 4; | |
14185 | break; | |
14186 | ||
14187 | case DW_OP_const4s: | |
14188 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
14189 | i += 4; | |
14190 | break; | |
14191 | ||
14192 | case DW_OP_constu: | |
14193 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 14194 | &bytes_read); |
c906108c SS |
14195 | i += bytes_read; |
14196 | break; | |
14197 | ||
14198 | case DW_OP_consts: | |
14199 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
14200 | i += bytes_read; | |
14201 | break; | |
14202 | ||
f1bea926 JM |
14203 | case DW_OP_dup: |
14204 | stack[stacki + 1] = stack[stacki]; | |
14205 | stacki++; | |
14206 | break; | |
14207 | ||
c906108c SS |
14208 | case DW_OP_plus: |
14209 | stack[stacki - 1] += stack[stacki]; | |
14210 | stacki--; | |
14211 | break; | |
14212 | ||
14213 | case DW_OP_plus_uconst: | |
3e43a32a MS |
14214 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), |
14215 | &bytes_read); | |
c906108c SS |
14216 | i += bytes_read; |
14217 | break; | |
14218 | ||
14219 | case DW_OP_minus: | |
f1bea926 | 14220 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
14221 | stacki--; |
14222 | break; | |
14223 | ||
7a292a7a | 14224 | case DW_OP_deref: |
7a292a7a | 14225 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
14226 | this using GDB's address_class enum. This is valid for partial |
14227 | global symbols, although the variable's address will be bogus | |
14228 | in the psymtab. */ | |
7a292a7a | 14229 | if (i < size) |
4d3c2250 | 14230 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
14231 | break; |
14232 | ||
9d774e44 | 14233 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
14234 | /* The top of the stack has the offset from the beginning |
14235 | of the thread control block at which the variable is located. */ | |
14236 | /* Nothing should follow this operator, so the top of stack would | |
14237 | be returned. */ | |
4cecd739 DJ |
14238 | /* This is valid for partial global symbols, but the variable's |
14239 | address will be bogus in the psymtab. */ | |
9d774e44 | 14240 | if (i < size) |
4d3c2250 | 14241 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
14242 | break; |
14243 | ||
42be36b3 CT |
14244 | case DW_OP_GNU_uninit: |
14245 | break; | |
14246 | ||
c906108c | 14247 | default: |
b1bfef65 TT |
14248 | { |
14249 | const char *name = dwarf_stack_op_name (op); | |
14250 | ||
14251 | if (name) | |
14252 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
14253 | name); | |
14254 | else | |
14255 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
14256 | op); | |
14257 | } | |
14258 | ||
c906108c SS |
14259 | return (stack[stacki]); |
14260 | } | |
d53d4ac5 TT |
14261 | |
14262 | /* Enforce maximum stack depth of SIZE-1 to avoid writing | |
14263 | outside of the allocated space. Also enforce minimum>0. */ | |
14264 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
14265 | { | |
14266 | complaint (&symfile_complaints, | |
14267 | _("location description stack overflow")); | |
14268 | return 0; | |
14269 | } | |
14270 | ||
14271 | if (stacki <= 0) | |
14272 | { | |
14273 | complaint (&symfile_complaints, | |
14274 | _("location description stack underflow")); | |
14275 | return 0; | |
14276 | } | |
c906108c SS |
14277 | } |
14278 | return (stack[stacki]); | |
14279 | } | |
14280 | ||
14281 | /* memory allocation interface */ | |
14282 | ||
c906108c | 14283 | static struct dwarf_block * |
7b5a2f43 | 14284 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
14285 | { |
14286 | struct dwarf_block *blk; | |
14287 | ||
14288 | blk = (struct dwarf_block *) | |
7b5a2f43 | 14289 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
14290 | return (blk); |
14291 | } | |
14292 | ||
14293 | static struct abbrev_info * | |
f3dd6933 | 14294 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
14295 | { |
14296 | struct abbrev_info *abbrev; | |
14297 | ||
f3dd6933 DJ |
14298 | abbrev = (struct abbrev_info *) |
14299 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
14300 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
14301 | return (abbrev); | |
14302 | } | |
14303 | ||
14304 | static struct die_info * | |
b60c80d6 | 14305 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
14306 | { |
14307 | struct die_info *die; | |
b60c80d6 DJ |
14308 | size_t size = sizeof (struct die_info); |
14309 | ||
14310 | if (num_attrs > 1) | |
14311 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 14312 | |
b60c80d6 | 14313 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
14314 | memset (die, 0, sizeof (struct die_info)); |
14315 | return (die); | |
14316 | } | |
2e276125 JB |
14317 | |
14318 | \f | |
14319 | /* Macro support. */ | |
14320 | ||
2e276125 JB |
14321 | /* Return the full name of file number I in *LH's file name table. |
14322 | Use COMP_DIR as the name of the current directory of the | |
14323 | compilation. The result is allocated using xmalloc; the caller is | |
14324 | responsible for freeing it. */ | |
14325 | static char * | |
14326 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
14327 | { | |
6a83a1e6 EZ |
14328 | /* Is the file number a valid index into the line header's file name |
14329 | table? Remember that file numbers start with one, not zero. */ | |
14330 | if (1 <= file && file <= lh->num_file_names) | |
14331 | { | |
14332 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 14333 | |
6a83a1e6 EZ |
14334 | if (IS_ABSOLUTE_PATH (fe->name)) |
14335 | return xstrdup (fe->name); | |
14336 | else | |
14337 | { | |
14338 | const char *dir; | |
14339 | int dir_len; | |
14340 | char *full_name; | |
14341 | ||
14342 | if (fe->dir_index) | |
14343 | dir = lh->include_dirs[fe->dir_index - 1]; | |
14344 | else | |
14345 | dir = comp_dir; | |
14346 | ||
14347 | if (dir) | |
14348 | { | |
14349 | dir_len = strlen (dir); | |
14350 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
14351 | strcpy (full_name, dir); | |
14352 | full_name[dir_len] = '/'; | |
14353 | strcpy (full_name + dir_len + 1, fe->name); | |
14354 | return full_name; | |
14355 | } | |
14356 | else | |
14357 | return xstrdup (fe->name); | |
14358 | } | |
14359 | } | |
2e276125 JB |
14360 | else |
14361 | { | |
6a83a1e6 EZ |
14362 | /* The compiler produced a bogus file number. We can at least |
14363 | record the macro definitions made in the file, even if we | |
14364 | won't be able to find the file by name. */ | |
14365 | char fake_name[80]; | |
9a619af0 | 14366 | |
6a83a1e6 | 14367 | sprintf (fake_name, "<bad macro file number %d>", file); |
2e276125 | 14368 | |
6e70227d | 14369 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
14370 | _("bad file number in macro information (%d)"), |
14371 | file); | |
2e276125 | 14372 | |
6a83a1e6 | 14373 | return xstrdup (fake_name); |
2e276125 JB |
14374 | } |
14375 | } | |
14376 | ||
14377 | ||
14378 | static struct macro_source_file * | |
14379 | macro_start_file (int file, int line, | |
14380 | struct macro_source_file *current_file, | |
14381 | const char *comp_dir, | |
14382 | struct line_header *lh, struct objfile *objfile) | |
14383 | { | |
14384 | /* The full name of this source file. */ | |
14385 | char *full_name = file_full_name (file, lh, comp_dir); | |
14386 | ||
14387 | /* We don't create a macro table for this compilation unit | |
14388 | at all until we actually get a filename. */ | |
14389 | if (! pending_macros) | |
4a146b47 | 14390 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 14391 | objfile->macro_cache); |
2e276125 JB |
14392 | |
14393 | if (! current_file) | |
14394 | /* If we have no current file, then this must be the start_file | |
14395 | directive for the compilation unit's main source file. */ | |
14396 | current_file = macro_set_main (pending_macros, full_name); | |
14397 | else | |
14398 | current_file = macro_include (current_file, line, full_name); | |
14399 | ||
14400 | xfree (full_name); | |
6e70227d | 14401 | |
2e276125 JB |
14402 | return current_file; |
14403 | } | |
14404 | ||
14405 | ||
14406 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
14407 | followed by a null byte. */ | |
14408 | static char * | |
14409 | copy_string (const char *buf, int len) | |
14410 | { | |
14411 | char *s = xmalloc (len + 1); | |
9a619af0 | 14412 | |
2e276125 JB |
14413 | memcpy (s, buf, len); |
14414 | s[len] = '\0'; | |
2e276125 JB |
14415 | return s; |
14416 | } | |
14417 | ||
14418 | ||
14419 | static const char * | |
14420 | consume_improper_spaces (const char *p, const char *body) | |
14421 | { | |
14422 | if (*p == ' ') | |
14423 | { | |
4d3c2250 | 14424 | complaint (&symfile_complaints, |
3e43a32a MS |
14425 | _("macro definition contains spaces " |
14426 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 14427 | body); |
2e276125 JB |
14428 | |
14429 | while (*p == ' ') | |
14430 | p++; | |
14431 | } | |
14432 | ||
14433 | return p; | |
14434 | } | |
14435 | ||
14436 | ||
14437 | static void | |
14438 | parse_macro_definition (struct macro_source_file *file, int line, | |
14439 | const char *body) | |
14440 | { | |
14441 | const char *p; | |
14442 | ||
14443 | /* The body string takes one of two forms. For object-like macro | |
14444 | definitions, it should be: | |
14445 | ||
14446 | <macro name> " " <definition> | |
14447 | ||
14448 | For function-like macro definitions, it should be: | |
14449 | ||
14450 | <macro name> "() " <definition> | |
14451 | or | |
14452 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
14453 | ||
14454 | Spaces may appear only where explicitly indicated, and in the | |
14455 | <definition>. | |
14456 | ||
14457 | The Dwarf 2 spec says that an object-like macro's name is always | |
14458 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 14459 | the space when the macro's definition is the empty string. |
2e276125 JB |
14460 | |
14461 | The Dwarf 2 spec says that there should be no spaces between the | |
14462 | formal arguments in a function-like macro's formal argument list, | |
14463 | but versions of GCC around March 2002 include spaces after the | |
14464 | commas. */ | |
14465 | ||
14466 | ||
14467 | /* Find the extent of the macro name. The macro name is terminated | |
14468 | by either a space or null character (for an object-like macro) or | |
14469 | an opening paren (for a function-like macro). */ | |
14470 | for (p = body; *p; p++) | |
14471 | if (*p == ' ' || *p == '(') | |
14472 | break; | |
14473 | ||
14474 | if (*p == ' ' || *p == '\0') | |
14475 | { | |
14476 | /* It's an object-like macro. */ | |
14477 | int name_len = p - body; | |
14478 | char *name = copy_string (body, name_len); | |
14479 | const char *replacement; | |
14480 | ||
14481 | if (*p == ' ') | |
14482 | replacement = body + name_len + 1; | |
14483 | else | |
14484 | { | |
4d3c2250 | 14485 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14486 | replacement = body + name_len; |
14487 | } | |
6e70227d | 14488 | |
2e276125 JB |
14489 | macro_define_object (file, line, name, replacement); |
14490 | ||
14491 | xfree (name); | |
14492 | } | |
14493 | else if (*p == '(') | |
14494 | { | |
14495 | /* It's a function-like macro. */ | |
14496 | char *name = copy_string (body, p - body); | |
14497 | int argc = 0; | |
14498 | int argv_size = 1; | |
14499 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
14500 | ||
14501 | p++; | |
14502 | ||
14503 | p = consume_improper_spaces (p, body); | |
14504 | ||
14505 | /* Parse the formal argument list. */ | |
14506 | while (*p && *p != ')') | |
14507 | { | |
14508 | /* Find the extent of the current argument name. */ | |
14509 | const char *arg_start = p; | |
14510 | ||
14511 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
14512 | p++; | |
14513 | ||
14514 | if (! *p || p == arg_start) | |
4d3c2250 | 14515 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14516 | else |
14517 | { | |
14518 | /* Make sure argv has room for the new argument. */ | |
14519 | if (argc >= argv_size) | |
14520 | { | |
14521 | argv_size *= 2; | |
14522 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
14523 | } | |
14524 | ||
14525 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
14526 | } | |
14527 | ||
14528 | p = consume_improper_spaces (p, body); | |
14529 | ||
14530 | /* Consume the comma, if present. */ | |
14531 | if (*p == ',') | |
14532 | { | |
14533 | p++; | |
14534 | ||
14535 | p = consume_improper_spaces (p, body); | |
14536 | } | |
14537 | } | |
14538 | ||
14539 | if (*p == ')') | |
14540 | { | |
14541 | p++; | |
14542 | ||
14543 | if (*p == ' ') | |
14544 | /* Perfectly formed definition, no complaints. */ | |
14545 | macro_define_function (file, line, name, | |
6e70227d | 14546 | argc, (const char **) argv, |
2e276125 JB |
14547 | p + 1); |
14548 | else if (*p == '\0') | |
14549 | { | |
14550 | /* Complain, but do define it. */ | |
4d3c2250 | 14551 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 14552 | macro_define_function (file, line, name, |
6e70227d | 14553 | argc, (const char **) argv, |
2e276125 JB |
14554 | p); |
14555 | } | |
14556 | else | |
14557 | /* Just complain. */ | |
4d3c2250 | 14558 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14559 | } |
14560 | else | |
14561 | /* Just complain. */ | |
4d3c2250 | 14562 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14563 | |
14564 | xfree (name); | |
14565 | { | |
14566 | int i; | |
14567 | ||
14568 | for (i = 0; i < argc; i++) | |
14569 | xfree (argv[i]); | |
14570 | } | |
14571 | xfree (argv); | |
14572 | } | |
14573 | else | |
4d3c2250 | 14574 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14575 | } |
14576 | ||
14577 | ||
14578 | static void | |
14579 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
14580 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 14581 | struct dwarf2_cu *cu) |
2e276125 | 14582 | { |
fe1b8b76 | 14583 | gdb_byte *mac_ptr, *mac_end; |
2e276125 | 14584 | struct macro_source_file *current_file = 0; |
757a13d0 JK |
14585 | enum dwarf_macinfo_record_type macinfo_type; |
14586 | int at_commandline; | |
2e276125 | 14587 | |
be391dca TT |
14588 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
14589 | &dwarf2_per_objfile->macinfo); | |
dce234bc | 14590 | if (dwarf2_per_objfile->macinfo.buffer == NULL) |
2e276125 | 14591 | { |
e2e0b3e5 | 14592 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
14593 | return; |
14594 | } | |
14595 | ||
757a13d0 JK |
14596 | /* First pass: Find the name of the base filename. |
14597 | This filename is needed in order to process all macros whose definition | |
14598 | (or undefinition) comes from the command line. These macros are defined | |
14599 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
14600 | associated to the base file. | |
14601 | ||
14602 | To determine the base file name, we scan the macro definitions until we | |
14603 | reach the first DW_MACINFO_start_file entry. We then initialize | |
14604 | CURRENT_FILE accordingly so that any macro definition found before the | |
14605 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
14606 | ||
dce234bc PP |
14607 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
14608 | mac_end = dwarf2_per_objfile->macinfo.buffer | |
14609 | + dwarf2_per_objfile->macinfo.size; | |
2e276125 | 14610 | |
757a13d0 | 14611 | do |
2e276125 | 14612 | { |
2e276125 JB |
14613 | /* Do we at least have room for a macinfo type byte? */ |
14614 | if (mac_ptr >= mac_end) | |
14615 | { | |
757a13d0 | 14616 | /* Complaint is printed during the second pass as GDB will probably |
3e43a32a MS |
14617 | stop the first pass earlier upon finding |
14618 | DW_MACINFO_start_file. */ | |
757a13d0 | 14619 | break; |
2e276125 JB |
14620 | } |
14621 | ||
14622 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
14623 | mac_ptr++; | |
14624 | ||
14625 | switch (macinfo_type) | |
14626 | { | |
14627 | /* A zero macinfo type indicates the end of the macro | |
14628 | information. */ | |
14629 | case 0: | |
757a13d0 JK |
14630 | break; |
14631 | ||
14632 | case DW_MACINFO_define: | |
14633 | case DW_MACINFO_undef: | |
14634 | /* Only skip the data by MAC_PTR. */ | |
14635 | { | |
14636 | unsigned int bytes_read; | |
14637 | ||
14638 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14639 | mac_ptr += bytes_read; | |
9b1c24c8 | 14640 | read_direct_string (abfd, mac_ptr, &bytes_read); |
757a13d0 JK |
14641 | mac_ptr += bytes_read; |
14642 | } | |
14643 | break; | |
14644 | ||
14645 | case DW_MACINFO_start_file: | |
14646 | { | |
14647 | unsigned int bytes_read; | |
14648 | int line, file; | |
14649 | ||
14650 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14651 | mac_ptr += bytes_read; | |
14652 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14653 | mac_ptr += bytes_read; | |
14654 | ||
3e43a32a MS |
14655 | current_file = macro_start_file (file, line, current_file, |
14656 | comp_dir, lh, cu->objfile); | |
757a13d0 JK |
14657 | } |
14658 | break; | |
14659 | ||
14660 | case DW_MACINFO_end_file: | |
14661 | /* No data to skip by MAC_PTR. */ | |
14662 | break; | |
14663 | ||
14664 | case DW_MACINFO_vendor_ext: | |
14665 | /* Only skip the data by MAC_PTR. */ | |
14666 | { | |
14667 | unsigned int bytes_read; | |
14668 | ||
14669 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14670 | mac_ptr += bytes_read; | |
9b1c24c8 | 14671 | read_direct_string (abfd, mac_ptr, &bytes_read); |
757a13d0 JK |
14672 | mac_ptr += bytes_read; |
14673 | } | |
14674 | break; | |
14675 | ||
14676 | default: | |
14677 | break; | |
14678 | } | |
14679 | } while (macinfo_type != 0 && current_file == NULL); | |
14680 | ||
14681 | /* Second pass: Process all entries. | |
14682 | ||
14683 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
14684 | command-line macro definitions/undefinitions. This flag is unset when we | |
14685 | reach the first DW_MACINFO_start_file entry. */ | |
14686 | ||
dce234bc | 14687 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
757a13d0 JK |
14688 | |
14689 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
14690 | GDB is still reading the definitions from command line. First | |
14691 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
14692 | to create CURRENT_FILE for the main source holding also the command line | |
14693 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
14694 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
14695 | ||
14696 | at_commandline = 1; | |
14697 | ||
14698 | do | |
14699 | { | |
14700 | /* Do we at least have room for a macinfo type byte? */ | |
14701 | if (mac_ptr >= mac_end) | |
14702 | { | |
14703 | dwarf2_macros_too_long_complaint (); | |
14704 | break; | |
14705 | } | |
14706 | ||
14707 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
14708 | mac_ptr++; | |
14709 | ||
14710 | switch (macinfo_type) | |
14711 | { | |
14712 | /* A zero macinfo type indicates the end of the macro | |
14713 | information. */ | |
14714 | case 0: | |
14715 | break; | |
2e276125 JB |
14716 | |
14717 | case DW_MACINFO_define: | |
14718 | case DW_MACINFO_undef: | |
14719 | { | |
891d2f0b | 14720 | unsigned int bytes_read; |
2e276125 JB |
14721 | int line; |
14722 | char *body; | |
14723 | ||
14724 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14725 | mac_ptr += bytes_read; | |
9b1c24c8 | 14726 | body = read_direct_string (abfd, mac_ptr, &bytes_read); |
2e276125 JB |
14727 | mac_ptr += bytes_read; |
14728 | ||
14729 | if (! current_file) | |
757a13d0 JK |
14730 | { |
14731 | /* DWARF violation as no main source is present. */ | |
14732 | complaint (&symfile_complaints, | |
14733 | _("debug info with no main source gives macro %s " | |
14734 | "on line %d: %s"), | |
6e70227d DE |
14735 | macinfo_type == DW_MACINFO_define ? |
14736 | _("definition") : | |
905e0470 PM |
14737 | macinfo_type == DW_MACINFO_undef ? |
14738 | _("undefinition") : | |
14739 | _("something-or-other"), line, body); | |
757a13d0 JK |
14740 | break; |
14741 | } | |
3e43a32a MS |
14742 | if ((line == 0 && !at_commandline) |
14743 | || (line != 0 && at_commandline)) | |
4d3c2250 | 14744 | complaint (&symfile_complaints, |
757a13d0 JK |
14745 | _("debug info gives %s macro %s with %s line %d: %s"), |
14746 | at_commandline ? _("command-line") : _("in-file"), | |
905e0470 | 14747 | macinfo_type == DW_MACINFO_define ? |
6e70227d | 14748 | _("definition") : |
905e0470 PM |
14749 | macinfo_type == DW_MACINFO_undef ? |
14750 | _("undefinition") : | |
14751 | _("something-or-other"), | |
757a13d0 JK |
14752 | line == 0 ? _("zero") : _("non-zero"), line, body); |
14753 | ||
14754 | if (macinfo_type == DW_MACINFO_define) | |
14755 | parse_macro_definition (current_file, line, body); | |
14756 | else if (macinfo_type == DW_MACINFO_undef) | |
14757 | macro_undef (current_file, line, body); | |
2e276125 JB |
14758 | } |
14759 | break; | |
14760 | ||
14761 | case DW_MACINFO_start_file: | |
14762 | { | |
891d2f0b | 14763 | unsigned int bytes_read; |
2e276125 JB |
14764 | int line, file; |
14765 | ||
14766 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14767 | mac_ptr += bytes_read; | |
14768 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14769 | mac_ptr += bytes_read; | |
14770 | ||
3e43a32a MS |
14771 | if ((line == 0 && !at_commandline) |
14772 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
14773 | complaint (&symfile_complaints, |
14774 | _("debug info gives source %d included " | |
14775 | "from %s at %s line %d"), | |
14776 | file, at_commandline ? _("command-line") : _("file"), | |
14777 | line == 0 ? _("zero") : _("non-zero"), line); | |
14778 | ||
14779 | if (at_commandline) | |
14780 | { | |
14781 | /* This DW_MACINFO_start_file was executed in the pass one. */ | |
14782 | at_commandline = 0; | |
14783 | } | |
14784 | else | |
14785 | current_file = macro_start_file (file, line, | |
14786 | current_file, comp_dir, | |
14787 | lh, cu->objfile); | |
2e276125 JB |
14788 | } |
14789 | break; | |
14790 | ||
14791 | case DW_MACINFO_end_file: | |
14792 | if (! current_file) | |
4d3c2250 | 14793 | complaint (&symfile_complaints, |
3e43a32a MS |
14794 | _("macro debug info has an unmatched " |
14795 | "`close_file' directive")); | |
2e276125 JB |
14796 | else |
14797 | { | |
14798 | current_file = current_file->included_by; | |
14799 | if (! current_file) | |
14800 | { | |
14801 | enum dwarf_macinfo_record_type next_type; | |
14802 | ||
14803 | /* GCC circa March 2002 doesn't produce the zero | |
14804 | type byte marking the end of the compilation | |
14805 | unit. Complain if it's not there, but exit no | |
14806 | matter what. */ | |
14807 | ||
14808 | /* Do we at least have room for a macinfo type byte? */ | |
14809 | if (mac_ptr >= mac_end) | |
14810 | { | |
4d3c2250 | 14811 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
14812 | return; |
14813 | } | |
14814 | ||
14815 | /* We don't increment mac_ptr here, so this is just | |
14816 | a look-ahead. */ | |
14817 | next_type = read_1_byte (abfd, mac_ptr); | |
14818 | if (next_type != 0) | |
4d3c2250 | 14819 | complaint (&symfile_complaints, |
3e43a32a MS |
14820 | _("no terminating 0-type entry for " |
14821 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
14822 | |
14823 | return; | |
14824 | } | |
14825 | } | |
14826 | break; | |
14827 | ||
14828 | case DW_MACINFO_vendor_ext: | |
14829 | { | |
891d2f0b | 14830 | unsigned int bytes_read; |
2e276125 | 14831 | int constant; |
2e276125 JB |
14832 | |
14833 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14834 | mac_ptr += bytes_read; | |
e8e80198 | 14835 | read_direct_string (abfd, mac_ptr, &bytes_read); |
2e276125 JB |
14836 | mac_ptr += bytes_read; |
14837 | ||
14838 | /* We don't recognize any vendor extensions. */ | |
14839 | } | |
14840 | break; | |
14841 | } | |
757a13d0 | 14842 | } while (macinfo_type != 0); |
2e276125 | 14843 | } |
8e19ed76 PS |
14844 | |
14845 | /* Check if the attribute's form is a DW_FORM_block* | |
0963b4bd | 14846 | if so return true else false. */ |
8e19ed76 PS |
14847 | static int |
14848 | attr_form_is_block (struct attribute *attr) | |
14849 | { | |
14850 | return (attr == NULL ? 0 : | |
14851 | attr->form == DW_FORM_block1 | |
14852 | || attr->form == DW_FORM_block2 | |
14853 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
14854 | || attr->form == DW_FORM_block |
14855 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 14856 | } |
4c2df51b | 14857 | |
c6a0999f JB |
14858 | /* Return non-zero if ATTR's value is a section offset --- classes |
14859 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
14860 | You may use DW_UNSND (attr) to retrieve such offsets. | |
14861 | ||
14862 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
14863 | may have a value that belongs to more than one of these classes; it | |
14864 | would be ambiguous if we did, because we use the same forms for all | |
14865 | of them. */ | |
3690dd37 JB |
14866 | static int |
14867 | attr_form_is_section_offset (struct attribute *attr) | |
14868 | { | |
14869 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
14870 | || attr->form == DW_FORM_data8 |
14871 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
14872 | } |
14873 | ||
14874 | ||
14875 | /* Return non-zero if ATTR's value falls in the 'constant' class, or | |
14876 | zero otherwise. When this function returns true, you can apply | |
14877 | dwarf2_get_attr_constant_value to it. | |
14878 | ||
14879 | However, note that for some attributes you must check | |
14880 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
14881 | and DW_FORM_data8 are members of both the constant class, and of | |
14882 | the classes that contain offsets into other debug sections | |
14883 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
14884 | that, if an attribute's can be either a constant or one of the | |
14885 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
14886 | taken as section offsets, not constants. */ | |
14887 | static int | |
14888 | attr_form_is_constant (struct attribute *attr) | |
14889 | { | |
14890 | switch (attr->form) | |
14891 | { | |
14892 | case DW_FORM_sdata: | |
14893 | case DW_FORM_udata: | |
14894 | case DW_FORM_data1: | |
14895 | case DW_FORM_data2: | |
14896 | case DW_FORM_data4: | |
14897 | case DW_FORM_data8: | |
14898 | return 1; | |
14899 | default: | |
14900 | return 0; | |
14901 | } | |
14902 | } | |
14903 | ||
8cf6f0b1 TT |
14904 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
14905 | ||
14906 | static void | |
14907 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
14908 | struct dwarf2_loclist_baton *baton, | |
14909 | struct attribute *attr) | |
14910 | { | |
14911 | dwarf2_read_section (dwarf2_per_objfile->objfile, | |
14912 | &dwarf2_per_objfile->loc); | |
14913 | ||
14914 | baton->per_cu = cu->per_cu; | |
14915 | gdb_assert (baton->per_cu); | |
14916 | /* We don't know how long the location list is, but make sure we | |
14917 | don't run off the edge of the section. */ | |
14918 | baton->size = dwarf2_per_objfile->loc.size - DW_UNSND (attr); | |
14919 | baton->data = dwarf2_per_objfile->loc.buffer + DW_UNSND (attr); | |
14920 | baton->base_address = cu->base_address; | |
14921 | } | |
14922 | ||
4c2df51b DJ |
14923 | static void |
14924 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 14925 | struct dwarf2_cu *cu) |
4c2df51b | 14926 | { |
3690dd37 | 14927 | if (attr_form_is_section_offset (attr) |
99bcc461 DJ |
14928 | /* ".debug_loc" may not exist at all, or the offset may be outside |
14929 | the section. If so, fall through to the complaint in the | |
14930 | other branch. */ | |
9e0ac564 TT |
14931 | && DW_UNSND (attr) < dwarf2_section_size (dwarf2_per_objfile->objfile, |
14932 | &dwarf2_per_objfile->loc)) | |
4c2df51b | 14933 | { |
0d53c4c4 | 14934 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 14935 | |
4a146b47 | 14936 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 14937 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 14938 | |
8cf6f0b1 | 14939 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 14940 | |
d00adf39 | 14941 | if (cu->base_known == 0) |
0d53c4c4 | 14942 | complaint (&symfile_complaints, |
3e43a32a MS |
14943 | _("Location list used without " |
14944 | "specifying the CU base address.")); | |
4c2df51b | 14945 | |
768a979c | 14946 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
14947 | SYMBOL_LOCATION_BATON (sym) = baton; |
14948 | } | |
14949 | else | |
14950 | { | |
14951 | struct dwarf2_locexpr_baton *baton; | |
14952 | ||
4a146b47 | 14953 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 14954 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
14955 | baton->per_cu = cu->per_cu; |
14956 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
14957 | |
14958 | if (attr_form_is_block (attr)) | |
14959 | { | |
14960 | /* Note that we're just copying the block's data pointer | |
14961 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
14962 | info_buffer for SYM's objfile; right now we never release |
14963 | that buffer, but when we do clean up properly this may | |
14964 | need to change. */ | |
0d53c4c4 DJ |
14965 | baton->size = DW_BLOCK (attr)->size; |
14966 | baton->data = DW_BLOCK (attr)->data; | |
14967 | } | |
14968 | else | |
14969 | { | |
14970 | dwarf2_invalid_attrib_class_complaint ("location description", | |
14971 | SYMBOL_NATURAL_NAME (sym)); | |
14972 | baton->size = 0; | |
14973 | baton->data = NULL; | |
14974 | } | |
6e70227d | 14975 | |
768a979c | 14976 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
14977 | SYMBOL_LOCATION_BATON (sym) = baton; |
14978 | } | |
4c2df51b | 14979 | } |
6502dd73 | 14980 | |
9aa1f1e3 TT |
14981 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
14982 | came from a separate debuginfo file, then the master objfile is | |
14983 | returned. */ | |
ae0d2f24 UW |
14984 | |
14985 | struct objfile * | |
14986 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
14987 | { | |
9291a0cd | 14988 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
14989 | |
14990 | /* Return the master objfile, so that we can report and look up the | |
14991 | correct file containing this variable. */ | |
14992 | if (objfile->separate_debug_objfile_backlink) | |
14993 | objfile = objfile->separate_debug_objfile_backlink; | |
14994 | ||
14995 | return objfile; | |
14996 | } | |
14997 | ||
14998 | /* Return the address size given in the compilation unit header for CU. */ | |
14999 | ||
15000 | CORE_ADDR | |
15001 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) | |
15002 | { | |
15003 | if (per_cu->cu) | |
15004 | return per_cu->cu->header.addr_size; | |
15005 | else | |
15006 | { | |
15007 | /* If the CU is not currently read in, we re-read its header. */ | |
9291a0cd | 15008 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
15009 | struct dwarf2_per_objfile *per_objfile |
15010 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
dce234bc | 15011 | gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset; |
ae0d2f24 | 15012 | struct comp_unit_head cu_header; |
9a619af0 | 15013 | |
ae0d2f24 UW |
15014 | memset (&cu_header, 0, sizeof cu_header); |
15015 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
15016 | return cu_header.addr_size; | |
15017 | } | |
15018 | } | |
15019 | ||
9eae7c52 TT |
15020 | /* Return the offset size given in the compilation unit header for CU. */ |
15021 | ||
15022 | int | |
15023 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
15024 | { | |
15025 | if (per_cu->cu) | |
15026 | return per_cu->cu->header.offset_size; | |
15027 | else | |
15028 | { | |
15029 | /* If the CU is not currently read in, we re-read its header. */ | |
9291a0cd | 15030 | struct objfile *objfile = per_cu->objfile; |
9eae7c52 TT |
15031 | struct dwarf2_per_objfile *per_objfile |
15032 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
15033 | gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset; | |
15034 | struct comp_unit_head cu_header; | |
15035 | ||
15036 | memset (&cu_header, 0, sizeof cu_header); | |
15037 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
15038 | return cu_header.offset_size; | |
15039 | } | |
15040 | } | |
15041 | ||
9aa1f1e3 TT |
15042 | /* Return the text offset of the CU. The returned offset comes from |
15043 | this CU's objfile. If this objfile came from a separate debuginfo | |
15044 | file, then the offset may be different from the corresponding | |
15045 | offset in the parent objfile. */ | |
15046 | ||
15047 | CORE_ADDR | |
15048 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
15049 | { | |
bb3fa9d0 | 15050 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
15051 | |
15052 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
15053 | } | |
15054 | ||
348e048f DE |
15055 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
15056 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
15057 | |
15058 | static struct dwarf2_per_cu_data * | |
c764a876 | 15059 | dwarf2_find_containing_comp_unit (unsigned int offset, |
ae038cb0 DJ |
15060 | struct objfile *objfile) |
15061 | { | |
15062 | struct dwarf2_per_cu_data *this_cu; | |
15063 | int low, high; | |
15064 | ||
ae038cb0 DJ |
15065 | low = 0; |
15066 | high = dwarf2_per_objfile->n_comp_units - 1; | |
15067 | while (high > low) | |
15068 | { | |
15069 | int mid = low + (high - low) / 2; | |
9a619af0 | 15070 | |
ae038cb0 DJ |
15071 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) |
15072 | high = mid; | |
15073 | else | |
15074 | low = mid + 1; | |
15075 | } | |
15076 | gdb_assert (low == high); | |
15077 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
15078 | { | |
10b3939b | 15079 | if (low == 0) |
8a3fe4f8 AC |
15080 | error (_("Dwarf Error: could not find partial DIE containing " |
15081 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
15082 | (long) offset, bfd_get_filename (objfile->obfd)); |
15083 | ||
ae038cb0 DJ |
15084 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
15085 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
15086 | } | |
15087 | else | |
15088 | { | |
15089 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
15090 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
15091 | && offset >= this_cu->offset + this_cu->length) | |
c764a876 | 15092 | error (_("invalid dwarf2 offset %u"), offset); |
ae038cb0 DJ |
15093 | gdb_assert (offset < this_cu->offset + this_cu->length); |
15094 | return this_cu; | |
15095 | } | |
15096 | } | |
15097 | ||
10b3939b DJ |
15098 | /* Locate the compilation unit from OBJFILE which is located at exactly |
15099 | OFFSET. Raises an error on failure. */ | |
15100 | ||
ae038cb0 | 15101 | static struct dwarf2_per_cu_data * |
c764a876 | 15102 | dwarf2_find_comp_unit (unsigned int offset, struct objfile *objfile) |
ae038cb0 DJ |
15103 | { |
15104 | struct dwarf2_per_cu_data *this_cu; | |
9a619af0 | 15105 | |
ae038cb0 DJ |
15106 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); |
15107 | if (this_cu->offset != offset) | |
c764a876 | 15108 | error (_("no compilation unit with offset %u."), offset); |
ae038cb0 DJ |
15109 | return this_cu; |
15110 | } | |
15111 | ||
9816fde3 | 15112 | /* Initialize dwarf2_cu CU for OBJFILE in a pre-allocated space. */ |
93311388 | 15113 | |
9816fde3 JK |
15114 | static void |
15115 | init_one_comp_unit (struct dwarf2_cu *cu, struct objfile *objfile) | |
93311388 | 15116 | { |
9816fde3 | 15117 | memset (cu, 0, sizeof (*cu)); |
93311388 DE |
15118 | cu->objfile = objfile; |
15119 | obstack_init (&cu->comp_unit_obstack); | |
9816fde3 JK |
15120 | } |
15121 | ||
15122 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
15123 | ||
15124 | static void | |
15125 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die) | |
15126 | { | |
15127 | struct attribute *attr; | |
15128 | ||
15129 | /* Set the language we're debugging. */ | |
15130 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
15131 | if (attr) | |
15132 | set_cu_language (DW_UNSND (attr), cu); | |
15133 | else | |
9cded63f TT |
15134 | { |
15135 | cu->language = language_minimal; | |
15136 | cu->language_defn = language_def (cu->language); | |
15137 | } | |
93311388 DE |
15138 | } |
15139 | ||
ae038cb0 DJ |
15140 | /* Release one cached compilation unit, CU. We unlink it from the tree |
15141 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
15142 | the caller is responsible for that. |
15143 | NOTE: DATA is a void * because this function is also used as a | |
15144 | cleanup routine. */ | |
ae038cb0 DJ |
15145 | |
15146 | static void | |
15147 | free_one_comp_unit (void *data) | |
15148 | { | |
15149 | struct dwarf2_cu *cu = data; | |
15150 | ||
15151 | if (cu->per_cu != NULL) | |
15152 | cu->per_cu->cu = NULL; | |
15153 | cu->per_cu = NULL; | |
15154 | ||
15155 | obstack_free (&cu->comp_unit_obstack, NULL); | |
15156 | ||
15157 | xfree (cu); | |
15158 | } | |
15159 | ||
72bf9492 | 15160 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
15161 | when we're finished with it. We can't free the pointer itself, but be |
15162 | sure to unlink it from the cache. Also release any associated storage | |
15163 | and perform cache maintenance. | |
72bf9492 DJ |
15164 | |
15165 | Only used during partial symbol parsing. */ | |
15166 | ||
15167 | static void | |
15168 | free_stack_comp_unit (void *data) | |
15169 | { | |
15170 | struct dwarf2_cu *cu = data; | |
15171 | ||
15172 | obstack_free (&cu->comp_unit_obstack, NULL); | |
15173 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
15174 | |
15175 | if (cu->per_cu != NULL) | |
15176 | { | |
15177 | /* This compilation unit is on the stack in our caller, so we | |
15178 | should not xfree it. Just unlink it. */ | |
15179 | cu->per_cu->cu = NULL; | |
15180 | cu->per_cu = NULL; | |
15181 | ||
15182 | /* If we had a per-cu pointer, then we may have other compilation | |
15183 | units loaded, so age them now. */ | |
15184 | age_cached_comp_units (); | |
15185 | } | |
15186 | } | |
15187 | ||
15188 | /* Free all cached compilation units. */ | |
15189 | ||
15190 | static void | |
15191 | free_cached_comp_units (void *data) | |
15192 | { | |
15193 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
15194 | ||
15195 | per_cu = dwarf2_per_objfile->read_in_chain; | |
15196 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
15197 | while (per_cu != NULL) | |
15198 | { | |
15199 | struct dwarf2_per_cu_data *next_cu; | |
15200 | ||
15201 | next_cu = per_cu->cu->read_in_chain; | |
15202 | ||
15203 | free_one_comp_unit (per_cu->cu); | |
15204 | *last_chain = next_cu; | |
15205 | ||
15206 | per_cu = next_cu; | |
15207 | } | |
15208 | } | |
15209 | ||
15210 | /* Increase the age counter on each cached compilation unit, and free | |
15211 | any that are too old. */ | |
15212 | ||
15213 | static void | |
15214 | age_cached_comp_units (void) | |
15215 | { | |
15216 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
15217 | ||
15218 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
15219 | per_cu = dwarf2_per_objfile->read_in_chain; | |
15220 | while (per_cu != NULL) | |
15221 | { | |
15222 | per_cu->cu->last_used ++; | |
15223 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
15224 | dwarf2_mark (per_cu->cu); | |
15225 | per_cu = per_cu->cu->read_in_chain; | |
15226 | } | |
15227 | ||
15228 | per_cu = dwarf2_per_objfile->read_in_chain; | |
15229 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
15230 | while (per_cu != NULL) | |
15231 | { | |
15232 | struct dwarf2_per_cu_data *next_cu; | |
15233 | ||
15234 | next_cu = per_cu->cu->read_in_chain; | |
15235 | ||
15236 | if (!per_cu->cu->mark) | |
15237 | { | |
15238 | free_one_comp_unit (per_cu->cu); | |
15239 | *last_chain = next_cu; | |
15240 | } | |
15241 | else | |
15242 | last_chain = &per_cu->cu->read_in_chain; | |
15243 | ||
15244 | per_cu = next_cu; | |
15245 | } | |
15246 | } | |
15247 | ||
15248 | /* Remove a single compilation unit from the cache. */ | |
15249 | ||
15250 | static void | |
15251 | free_one_cached_comp_unit (void *target_cu) | |
15252 | { | |
15253 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
15254 | ||
15255 | per_cu = dwarf2_per_objfile->read_in_chain; | |
15256 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
15257 | while (per_cu != NULL) | |
15258 | { | |
15259 | struct dwarf2_per_cu_data *next_cu; | |
15260 | ||
15261 | next_cu = per_cu->cu->read_in_chain; | |
15262 | ||
15263 | if (per_cu->cu == target_cu) | |
15264 | { | |
15265 | free_one_comp_unit (per_cu->cu); | |
15266 | *last_chain = next_cu; | |
15267 | break; | |
15268 | } | |
15269 | else | |
15270 | last_chain = &per_cu->cu->read_in_chain; | |
15271 | ||
15272 | per_cu = next_cu; | |
15273 | } | |
15274 | } | |
15275 | ||
fe3e1990 DJ |
15276 | /* Release all extra memory associated with OBJFILE. */ |
15277 | ||
15278 | void | |
15279 | dwarf2_free_objfile (struct objfile *objfile) | |
15280 | { | |
15281 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
15282 | ||
15283 | if (dwarf2_per_objfile == NULL) | |
15284 | return; | |
15285 | ||
15286 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
15287 | free_cached_comp_units (NULL); | |
15288 | ||
7b9f3c50 DE |
15289 | if (dwarf2_per_objfile->quick_file_names_table) |
15290 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 15291 | |
fe3e1990 DJ |
15292 | /* Everything else should be on the objfile obstack. */ |
15293 | } | |
15294 | ||
1c379e20 DJ |
15295 | /* A pair of DIE offset and GDB type pointer. We store these |
15296 | in a hash table separate from the DIEs, and preserve them | |
15297 | when the DIEs are flushed out of cache. */ | |
15298 | ||
15299 | struct dwarf2_offset_and_type | |
15300 | { | |
15301 | unsigned int offset; | |
15302 | struct type *type; | |
15303 | }; | |
15304 | ||
15305 | /* Hash function for a dwarf2_offset_and_type. */ | |
15306 | ||
15307 | static hashval_t | |
15308 | offset_and_type_hash (const void *item) | |
15309 | { | |
15310 | const struct dwarf2_offset_and_type *ofs = item; | |
9a619af0 | 15311 | |
1c379e20 DJ |
15312 | return ofs->offset; |
15313 | } | |
15314 | ||
15315 | /* Equality function for a dwarf2_offset_and_type. */ | |
15316 | ||
15317 | static int | |
15318 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
15319 | { | |
15320 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
15321 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 15322 | |
1c379e20 DJ |
15323 | return ofs_lhs->offset == ofs_rhs->offset; |
15324 | } | |
15325 | ||
15326 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
15327 | table if necessary. For convenience, return TYPE. |
15328 | ||
15329 | The DIEs reading must have careful ordering to: | |
15330 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
15331 | reading current DIE. | |
15332 | * Not trying to dereference contents of still incompletely read in types | |
15333 | while reading in other DIEs. | |
15334 | * Enable referencing still incompletely read in types just by a pointer to | |
15335 | the type without accessing its fields. | |
15336 | ||
15337 | Therefore caller should follow these rules: | |
15338 | * Try to fetch any prerequisite types we may need to build this DIE type | |
15339 | before building the type and calling set_die_type. | |
e71ec853 | 15340 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
15341 | possible before fetching more types to complete the current type. |
15342 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 15343 | |
f792889a | 15344 | static struct type * |
1c379e20 DJ |
15345 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
15346 | { | |
15347 | struct dwarf2_offset_and_type **slot, ofs; | |
673bfd45 DE |
15348 | struct objfile *objfile = cu->objfile; |
15349 | htab_t *type_hash_ptr; | |
1c379e20 | 15350 | |
b4ba55a1 JB |
15351 | /* For Ada types, make sure that the gnat-specific data is always |
15352 | initialized (if not already set). There are a few types where | |
15353 | we should not be doing so, because the type-specific area is | |
15354 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
15355 | where the type-specific area is used to store the floatformat). | |
15356 | But this is not a problem, because the gnat-specific information | |
15357 | is actually not needed for these types. */ | |
15358 | if (need_gnat_info (cu) | |
15359 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
15360 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
15361 | && !HAVE_GNAT_AUX_INFO (type)) | |
15362 | INIT_GNAT_SPECIFIC (type); | |
15363 | ||
673bfd45 DE |
15364 | if (cu->per_cu->from_debug_types) |
15365 | type_hash_ptr = &dwarf2_per_objfile->debug_types_type_hash; | |
15366 | else | |
15367 | type_hash_ptr = &dwarf2_per_objfile->debug_info_type_hash; | |
15368 | ||
15369 | if (*type_hash_ptr == NULL) | |
f792889a | 15370 | { |
673bfd45 DE |
15371 | *type_hash_ptr |
15372 | = htab_create_alloc_ex (127, | |
f792889a DJ |
15373 | offset_and_type_hash, |
15374 | offset_and_type_eq, | |
15375 | NULL, | |
673bfd45 | 15376 | &objfile->objfile_obstack, |
f792889a DJ |
15377 | hashtab_obstack_allocate, |
15378 | dummy_obstack_deallocate); | |
f792889a | 15379 | } |
1c379e20 DJ |
15380 | |
15381 | ofs.offset = die->offset; | |
15382 | ofs.type = type; | |
15383 | slot = (struct dwarf2_offset_and_type **) | |
673bfd45 | 15384 | htab_find_slot_with_hash (*type_hash_ptr, &ofs, ofs.offset, INSERT); |
7e314c57 JK |
15385 | if (*slot) |
15386 | complaint (&symfile_complaints, | |
15387 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
15388 | die->offset); | |
673bfd45 | 15389 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 15390 | **slot = ofs; |
f792889a | 15391 | return type; |
1c379e20 DJ |
15392 | } |
15393 | ||
673bfd45 DE |
15394 | /* Look up the type for the die at DIE_OFFSET in the appropriate type_hash |
15395 | table, or return NULL if the die does not have a saved type. */ | |
1c379e20 DJ |
15396 | |
15397 | static struct type * | |
673bfd45 DE |
15398 | get_die_type_at_offset (unsigned int offset, |
15399 | struct dwarf2_per_cu_data *per_cu) | |
1c379e20 DJ |
15400 | { |
15401 | struct dwarf2_offset_and_type *slot, ofs; | |
673bfd45 | 15402 | htab_t type_hash; |
f792889a | 15403 | |
673bfd45 DE |
15404 | if (per_cu->from_debug_types) |
15405 | type_hash = dwarf2_per_objfile->debug_types_type_hash; | |
15406 | else | |
15407 | type_hash = dwarf2_per_objfile->debug_info_type_hash; | |
f792889a DJ |
15408 | if (type_hash == NULL) |
15409 | return NULL; | |
1c379e20 | 15410 | |
673bfd45 | 15411 | ofs.offset = offset; |
1c379e20 DJ |
15412 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); |
15413 | if (slot) | |
15414 | return slot->type; | |
15415 | else | |
15416 | return NULL; | |
15417 | } | |
15418 | ||
673bfd45 DE |
15419 | /* Look up the type for DIE in the appropriate type_hash table, |
15420 | or return NULL if DIE does not have a saved type. */ | |
15421 | ||
15422 | static struct type * | |
15423 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
15424 | { | |
15425 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
15426 | } | |
15427 | ||
10b3939b DJ |
15428 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
15429 | ||
15430 | static void | |
15431 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
15432 | struct dwarf2_per_cu_data *ref_per_cu) | |
15433 | { | |
15434 | void **slot; | |
15435 | ||
15436 | if (cu->dependencies == NULL) | |
15437 | cu->dependencies | |
15438 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
15439 | NULL, &cu->comp_unit_obstack, | |
15440 | hashtab_obstack_allocate, | |
15441 | dummy_obstack_deallocate); | |
15442 | ||
15443 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
15444 | if (*slot == NULL) | |
15445 | *slot = ref_per_cu; | |
15446 | } | |
1c379e20 | 15447 | |
f504f079 DE |
15448 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
15449 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
15450 | cache that we must keep because we are keeping CU. */ |
15451 | ||
10b3939b DJ |
15452 | static int |
15453 | dwarf2_mark_helper (void **slot, void *data) | |
15454 | { | |
15455 | struct dwarf2_per_cu_data *per_cu; | |
15456 | ||
15457 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
15458 | |
15459 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
15460 | reading of the chain. As such dependencies remain valid it is not much | |
15461 | useful to track and undo them during QUIT cleanups. */ | |
15462 | if (per_cu->cu == NULL) | |
15463 | return 1; | |
15464 | ||
10b3939b DJ |
15465 | if (per_cu->cu->mark) |
15466 | return 1; | |
15467 | per_cu->cu->mark = 1; | |
15468 | ||
15469 | if (per_cu->cu->dependencies != NULL) | |
15470 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
15471 | ||
15472 | return 1; | |
15473 | } | |
15474 | ||
f504f079 DE |
15475 | /* Set the mark field in CU and in every other compilation unit in the |
15476 | cache that we must keep because we are keeping CU. */ | |
15477 | ||
ae038cb0 DJ |
15478 | static void |
15479 | dwarf2_mark (struct dwarf2_cu *cu) | |
15480 | { | |
15481 | if (cu->mark) | |
15482 | return; | |
15483 | cu->mark = 1; | |
10b3939b DJ |
15484 | if (cu->dependencies != NULL) |
15485 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
15486 | } |
15487 | ||
15488 | static void | |
15489 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
15490 | { | |
15491 | while (per_cu) | |
15492 | { | |
15493 | per_cu->cu->mark = 0; | |
15494 | per_cu = per_cu->cu->read_in_chain; | |
15495 | } | |
72bf9492 DJ |
15496 | } |
15497 | ||
72bf9492 DJ |
15498 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
15499 | is its offset in .debug_info for this objfile. */ | |
15500 | ||
15501 | static hashval_t | |
15502 | partial_die_hash (const void *item) | |
15503 | { | |
15504 | const struct partial_die_info *part_die = item; | |
9a619af0 | 15505 | |
72bf9492 DJ |
15506 | return part_die->offset; |
15507 | } | |
15508 | ||
15509 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
15510 | are equal if they have the same offset. */ | |
15511 | ||
15512 | static int | |
15513 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
15514 | { | |
15515 | const struct partial_die_info *part_die_lhs = item_lhs; | |
15516 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 15517 | |
72bf9492 DJ |
15518 | return part_die_lhs->offset == part_die_rhs->offset; |
15519 | } | |
15520 | ||
ae038cb0 DJ |
15521 | static struct cmd_list_element *set_dwarf2_cmdlist; |
15522 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
15523 | ||
15524 | static void | |
15525 | set_dwarf2_cmd (char *args, int from_tty) | |
15526 | { | |
15527 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
15528 | } | |
15529 | ||
15530 | static void | |
15531 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 15532 | { |
ae038cb0 DJ |
15533 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
15534 | } | |
15535 | ||
dce234bc PP |
15536 | /* If section described by INFO was mmapped, munmap it now. */ |
15537 | ||
15538 | static void | |
15539 | munmap_section_buffer (struct dwarf2_section_info *info) | |
15540 | { | |
b315ab21 | 15541 | if (info->map_addr != NULL) |
dce234bc PP |
15542 | { |
15543 | #ifdef HAVE_MMAP | |
b315ab21 | 15544 | int res; |
9a619af0 | 15545 | |
b315ab21 TG |
15546 | res = munmap (info->map_addr, info->map_len); |
15547 | gdb_assert (res == 0); | |
dce234bc PP |
15548 | #else |
15549 | /* Without HAVE_MMAP, we should never be here to begin with. */ | |
f3574227 | 15550 | gdb_assert_not_reached ("no mmap support"); |
dce234bc PP |
15551 | #endif |
15552 | } | |
15553 | } | |
15554 | ||
15555 | /* munmap debug sections for OBJFILE, if necessary. */ | |
15556 | ||
15557 | static void | |
c1bd65d0 | 15558 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
15559 | { |
15560 | struct dwarf2_per_objfile *data = d; | |
9a619af0 | 15561 | |
16be1145 DE |
15562 | /* This is sorted according to the order they're defined in to make it easier |
15563 | to keep in sync. */ | |
dce234bc PP |
15564 | munmap_section_buffer (&data->info); |
15565 | munmap_section_buffer (&data->abbrev); | |
15566 | munmap_section_buffer (&data->line); | |
16be1145 | 15567 | munmap_section_buffer (&data->loc); |
dce234bc | 15568 | munmap_section_buffer (&data->macinfo); |
16be1145 | 15569 | munmap_section_buffer (&data->str); |
dce234bc | 15570 | munmap_section_buffer (&data->ranges); |
16be1145 | 15571 | munmap_section_buffer (&data->types); |
dce234bc PP |
15572 | munmap_section_buffer (&data->frame); |
15573 | munmap_section_buffer (&data->eh_frame); | |
9291a0cd TT |
15574 | munmap_section_buffer (&data->gdb_index); |
15575 | } | |
15576 | ||
15577 | \f | |
ae2de4f8 | 15578 | /* The "save gdb-index" command. */ |
9291a0cd TT |
15579 | |
15580 | /* The contents of the hash table we create when building the string | |
15581 | table. */ | |
15582 | struct strtab_entry | |
15583 | { | |
15584 | offset_type offset; | |
15585 | const char *str; | |
15586 | }; | |
15587 | ||
559a7a62 JK |
15588 | /* Hash function for a strtab_entry. |
15589 | ||
15590 | Function is used only during write_hash_table so no index format backward | |
15591 | compatibility is needed. */ | |
b89be57b | 15592 | |
9291a0cd TT |
15593 | static hashval_t |
15594 | hash_strtab_entry (const void *e) | |
15595 | { | |
15596 | const struct strtab_entry *entry = e; | |
559a7a62 | 15597 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
15598 | } |
15599 | ||
15600 | /* Equality function for a strtab_entry. */ | |
b89be57b | 15601 | |
9291a0cd TT |
15602 | static int |
15603 | eq_strtab_entry (const void *a, const void *b) | |
15604 | { | |
15605 | const struct strtab_entry *ea = a; | |
15606 | const struct strtab_entry *eb = b; | |
15607 | return !strcmp (ea->str, eb->str); | |
15608 | } | |
15609 | ||
15610 | /* Create a strtab_entry hash table. */ | |
b89be57b | 15611 | |
9291a0cd TT |
15612 | static htab_t |
15613 | create_strtab (void) | |
15614 | { | |
15615 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
15616 | xfree, xcalloc, xfree); | |
15617 | } | |
15618 | ||
15619 | /* Add a string to the constant pool. Return the string's offset in | |
15620 | host order. */ | |
b89be57b | 15621 | |
9291a0cd TT |
15622 | static offset_type |
15623 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
15624 | { | |
15625 | void **slot; | |
15626 | struct strtab_entry entry; | |
15627 | struct strtab_entry *result; | |
15628 | ||
15629 | entry.str = str; | |
15630 | slot = htab_find_slot (table, &entry, INSERT); | |
15631 | if (*slot) | |
15632 | result = *slot; | |
15633 | else | |
15634 | { | |
15635 | result = XNEW (struct strtab_entry); | |
15636 | result->offset = obstack_object_size (cpool); | |
15637 | result->str = str; | |
15638 | obstack_grow_str0 (cpool, str); | |
15639 | *slot = result; | |
15640 | } | |
15641 | return result->offset; | |
15642 | } | |
15643 | ||
15644 | /* An entry in the symbol table. */ | |
15645 | struct symtab_index_entry | |
15646 | { | |
15647 | /* The name of the symbol. */ | |
15648 | const char *name; | |
15649 | /* The offset of the name in the constant pool. */ | |
15650 | offset_type index_offset; | |
15651 | /* A sorted vector of the indices of all the CUs that hold an object | |
15652 | of this name. */ | |
15653 | VEC (offset_type) *cu_indices; | |
15654 | }; | |
15655 | ||
15656 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
15657 | struct mapped_symtab | |
15658 | { | |
15659 | offset_type n_elements; | |
15660 | offset_type size; | |
15661 | struct symtab_index_entry **data; | |
15662 | }; | |
15663 | ||
15664 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 15665 | |
9291a0cd TT |
15666 | static hashval_t |
15667 | hash_symtab_entry (const void *e) | |
15668 | { | |
15669 | const struct symtab_index_entry *entry = e; | |
15670 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
15671 | sizeof (offset_type) * VEC_length (offset_type, | |
15672 | entry->cu_indices), | |
15673 | 0); | |
15674 | } | |
15675 | ||
15676 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 15677 | |
9291a0cd TT |
15678 | static int |
15679 | eq_symtab_entry (const void *a, const void *b) | |
15680 | { | |
15681 | const struct symtab_index_entry *ea = a; | |
15682 | const struct symtab_index_entry *eb = b; | |
15683 | int len = VEC_length (offset_type, ea->cu_indices); | |
15684 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
15685 | return 0; | |
15686 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
15687 | VEC_address (offset_type, eb->cu_indices), | |
15688 | sizeof (offset_type) * len); | |
15689 | } | |
15690 | ||
15691 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 15692 | |
9291a0cd TT |
15693 | static void |
15694 | delete_symtab_entry (void *p) | |
15695 | { | |
15696 | struct symtab_index_entry *entry = p; | |
15697 | VEC_free (offset_type, entry->cu_indices); | |
15698 | xfree (entry); | |
15699 | } | |
15700 | ||
15701 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 15702 | |
9291a0cd | 15703 | static htab_t |
3876f04e | 15704 | create_symbol_hash_table (void) |
9291a0cd TT |
15705 | { |
15706 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
15707 | delete_symtab_entry, xcalloc, xfree); | |
15708 | } | |
15709 | ||
15710 | /* Create a new mapped symtab object. */ | |
b89be57b | 15711 | |
9291a0cd TT |
15712 | static struct mapped_symtab * |
15713 | create_mapped_symtab (void) | |
15714 | { | |
15715 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
15716 | symtab->n_elements = 0; | |
15717 | symtab->size = 1024; | |
15718 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
15719 | return symtab; | |
15720 | } | |
15721 | ||
15722 | /* Destroy a mapped_symtab. */ | |
b89be57b | 15723 | |
9291a0cd TT |
15724 | static void |
15725 | cleanup_mapped_symtab (void *p) | |
15726 | { | |
15727 | struct mapped_symtab *symtab = p; | |
15728 | /* The contents of the array are freed when the other hash table is | |
15729 | destroyed. */ | |
15730 | xfree (symtab->data); | |
15731 | xfree (symtab); | |
15732 | } | |
15733 | ||
15734 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
15735 | the slot. |
15736 | ||
15737 | Function is used only during write_hash_table so no index format backward | |
15738 | compatibility is needed. */ | |
b89be57b | 15739 | |
9291a0cd TT |
15740 | static struct symtab_index_entry ** |
15741 | find_slot (struct mapped_symtab *symtab, const char *name) | |
15742 | { | |
559a7a62 | 15743 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
15744 | |
15745 | index = hash & (symtab->size - 1); | |
15746 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
15747 | ||
15748 | for (;;) | |
15749 | { | |
15750 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
15751 | return &symtab->data[index]; | |
15752 | index = (index + step) & (symtab->size - 1); | |
15753 | } | |
15754 | } | |
15755 | ||
15756 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 15757 | |
9291a0cd TT |
15758 | static void |
15759 | hash_expand (struct mapped_symtab *symtab) | |
15760 | { | |
15761 | offset_type old_size = symtab->size; | |
15762 | offset_type i; | |
15763 | struct symtab_index_entry **old_entries = symtab->data; | |
15764 | ||
15765 | symtab->size *= 2; | |
15766 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
15767 | ||
15768 | for (i = 0; i < old_size; ++i) | |
15769 | { | |
15770 | if (old_entries[i]) | |
15771 | { | |
15772 | struct symtab_index_entry **slot = find_slot (symtab, | |
15773 | old_entries[i]->name); | |
15774 | *slot = old_entries[i]; | |
15775 | } | |
15776 | } | |
15777 | ||
15778 | xfree (old_entries); | |
15779 | } | |
15780 | ||
15781 | /* Add an entry to SYMTAB. NAME is the name of the symbol. CU_INDEX | |
15782 | is the index of the CU in which the symbol appears. */ | |
b89be57b | 15783 | |
9291a0cd TT |
15784 | static void |
15785 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
15786 | offset_type cu_index) | |
15787 | { | |
15788 | struct symtab_index_entry **slot; | |
15789 | ||
15790 | ++symtab->n_elements; | |
15791 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
15792 | hash_expand (symtab); | |
15793 | ||
15794 | slot = find_slot (symtab, name); | |
15795 | if (!*slot) | |
15796 | { | |
15797 | *slot = XNEW (struct symtab_index_entry); | |
15798 | (*slot)->name = name; | |
15799 | (*slot)->cu_indices = NULL; | |
15800 | } | |
15801 | /* Don't push an index twice. Due to how we add entries we only | |
15802 | have to check the last one. */ | |
15803 | if (VEC_empty (offset_type, (*slot)->cu_indices) | |
cf31e6f9 | 15804 | || VEC_last (offset_type, (*slot)->cu_indices) != cu_index) |
9291a0cd TT |
15805 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index); |
15806 | } | |
15807 | ||
15808 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 15809 | |
9291a0cd | 15810 | static offset_type |
3876f04e | 15811 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
15812 | struct symtab_index_entry *entry) |
15813 | { | |
15814 | void **slot; | |
15815 | ||
3876f04e | 15816 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
15817 | if (!*slot) |
15818 | { | |
15819 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
15820 | offset_type val = MAYBE_SWAP (len); | |
15821 | offset_type iter; | |
15822 | int i; | |
15823 | ||
15824 | *slot = entry; | |
15825 | entry->index_offset = obstack_object_size (cpool); | |
15826 | ||
15827 | obstack_grow (cpool, &val, sizeof (val)); | |
15828 | for (i = 0; | |
15829 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
15830 | ++i) | |
15831 | { | |
15832 | val = MAYBE_SWAP (iter); | |
15833 | obstack_grow (cpool, &val, sizeof (val)); | |
15834 | } | |
15835 | } | |
15836 | else | |
15837 | { | |
15838 | struct symtab_index_entry *old_entry = *slot; | |
15839 | entry->index_offset = old_entry->index_offset; | |
15840 | entry = old_entry; | |
15841 | } | |
15842 | return entry->index_offset; | |
15843 | } | |
15844 | ||
15845 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
15846 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 15847 | |
9291a0cd TT |
15848 | static void |
15849 | write_hash_table (struct mapped_symtab *symtab, | |
15850 | struct obstack *output, struct obstack *cpool) | |
15851 | { | |
15852 | offset_type i; | |
3876f04e | 15853 | htab_t symbol_hash_table; |
9291a0cd TT |
15854 | htab_t str_table; |
15855 | ||
3876f04e | 15856 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 15857 | str_table = create_strtab (); |
3876f04e | 15858 | |
9291a0cd TT |
15859 | /* We add all the index vectors to the constant pool first, to |
15860 | ensure alignment is ok. */ | |
15861 | for (i = 0; i < symtab->size; ++i) | |
15862 | { | |
15863 | if (symtab->data[i]) | |
3876f04e | 15864 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
15865 | } |
15866 | ||
15867 | /* Now write out the hash table. */ | |
15868 | for (i = 0; i < symtab->size; ++i) | |
15869 | { | |
15870 | offset_type str_off, vec_off; | |
15871 | ||
15872 | if (symtab->data[i]) | |
15873 | { | |
15874 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
15875 | vec_off = symtab->data[i]->index_offset; | |
15876 | } | |
15877 | else | |
15878 | { | |
15879 | /* While 0 is a valid constant pool index, it is not valid | |
15880 | to have 0 for both offsets. */ | |
15881 | str_off = 0; | |
15882 | vec_off = 0; | |
15883 | } | |
15884 | ||
15885 | str_off = MAYBE_SWAP (str_off); | |
15886 | vec_off = MAYBE_SWAP (vec_off); | |
15887 | ||
15888 | obstack_grow (output, &str_off, sizeof (str_off)); | |
15889 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
15890 | } | |
15891 | ||
15892 | htab_delete (str_table); | |
3876f04e | 15893 | htab_delete (symbol_hash_table); |
9291a0cd TT |
15894 | } |
15895 | ||
0a5429f6 DE |
15896 | /* Struct to map psymtab to CU index in the index file. */ |
15897 | struct psymtab_cu_index_map | |
15898 | { | |
15899 | struct partial_symtab *psymtab; | |
15900 | unsigned int cu_index; | |
15901 | }; | |
15902 | ||
15903 | static hashval_t | |
15904 | hash_psymtab_cu_index (const void *item) | |
15905 | { | |
15906 | const struct psymtab_cu_index_map *map = item; | |
15907 | ||
15908 | return htab_hash_pointer (map->psymtab); | |
15909 | } | |
15910 | ||
15911 | static int | |
15912 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
15913 | { | |
15914 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
15915 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
15916 | ||
15917 | return lhs->psymtab == rhs->psymtab; | |
15918 | } | |
15919 | ||
15920 | /* Helper struct for building the address table. */ | |
15921 | struct addrmap_index_data | |
15922 | { | |
15923 | struct objfile *objfile; | |
15924 | struct obstack *addr_obstack; | |
15925 | htab_t cu_index_htab; | |
15926 | ||
15927 | /* Non-zero if the previous_* fields are valid. | |
15928 | We can't write an entry until we see the next entry (since it is only then | |
15929 | that we know the end of the entry). */ | |
15930 | int previous_valid; | |
15931 | /* Index of the CU in the table of all CUs in the index file. */ | |
15932 | unsigned int previous_cu_index; | |
0963b4bd | 15933 | /* Start address of the CU. */ |
0a5429f6 DE |
15934 | CORE_ADDR previous_cu_start; |
15935 | }; | |
15936 | ||
15937 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 15938 | |
9291a0cd | 15939 | static void |
0a5429f6 DE |
15940 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
15941 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 15942 | { |
0a5429f6 | 15943 | offset_type cu_index_to_write; |
9291a0cd TT |
15944 | char addr[8]; |
15945 | CORE_ADDR baseaddr; | |
15946 | ||
15947 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
15948 | ||
0a5429f6 DE |
15949 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
15950 | obstack_grow (obstack, addr, 8); | |
15951 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
15952 | obstack_grow (obstack, addr, 8); | |
15953 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
15954 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
15955 | } | |
15956 | ||
15957 | /* Worker function for traversing an addrmap to build the address table. */ | |
15958 | ||
15959 | static int | |
15960 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
15961 | { | |
15962 | struct addrmap_index_data *data = datap; | |
15963 | struct partial_symtab *pst = obj; | |
15964 | offset_type cu_index; | |
15965 | void **slot; | |
15966 | ||
15967 | if (data->previous_valid) | |
15968 | add_address_entry (data->objfile, data->addr_obstack, | |
15969 | data->previous_cu_start, start_addr, | |
15970 | data->previous_cu_index); | |
15971 | ||
15972 | data->previous_cu_start = start_addr; | |
15973 | if (pst != NULL) | |
15974 | { | |
15975 | struct psymtab_cu_index_map find_map, *map; | |
15976 | find_map.psymtab = pst; | |
15977 | map = htab_find (data->cu_index_htab, &find_map); | |
15978 | gdb_assert (map != NULL); | |
15979 | data->previous_cu_index = map->cu_index; | |
15980 | data->previous_valid = 1; | |
15981 | } | |
15982 | else | |
15983 | data->previous_valid = 0; | |
15984 | ||
15985 | return 0; | |
15986 | } | |
15987 | ||
15988 | /* Write OBJFILE's address map to OBSTACK. | |
15989 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
15990 | in the index file. */ | |
15991 | ||
15992 | static void | |
15993 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
15994 | htab_t cu_index_htab) | |
15995 | { | |
15996 | struct addrmap_index_data addrmap_index_data; | |
15997 | ||
15998 | /* When writing the address table, we have to cope with the fact that | |
15999 | the addrmap iterator only provides the start of a region; we have to | |
16000 | wait until the next invocation to get the start of the next region. */ | |
16001 | ||
16002 | addrmap_index_data.objfile = objfile; | |
16003 | addrmap_index_data.addr_obstack = obstack; | |
16004 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
16005 | addrmap_index_data.previous_valid = 0; | |
16006 | ||
16007 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
16008 | &addrmap_index_data); | |
16009 | ||
16010 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
16011 | is valid, but we should still handle it. | |
16012 | The end address is recorded as the start of the next region, but that | |
16013 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
16014 | anyway. */ | |
16015 | if (addrmap_index_data.previous_valid) | |
16016 | add_address_entry (objfile, obstack, | |
16017 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
16018 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
16019 | } |
16020 | ||
16021 | /* Add a list of partial symbols to SYMTAB. */ | |
b89be57b | 16022 | |
9291a0cd TT |
16023 | static void |
16024 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 16025 | htab_t psyms_seen, |
9291a0cd TT |
16026 | struct partial_symbol **psymp, |
16027 | int count, | |
987d643c TT |
16028 | offset_type cu_index, |
16029 | int is_static) | |
9291a0cd TT |
16030 | { |
16031 | for (; count-- > 0; ++psymp) | |
16032 | { | |
987d643c TT |
16033 | void **slot, *lookup; |
16034 | ||
9291a0cd TT |
16035 | if (SYMBOL_LANGUAGE (*psymp) == language_ada) |
16036 | error (_("Ada is not currently supported by the index")); | |
987d643c TT |
16037 | |
16038 | /* We only want to add a given psymbol once. However, we also | |
16039 | want to account for whether it is global or static. So, we | |
16040 | may add it twice, using slightly different values. */ | |
16041 | if (is_static) | |
16042 | { | |
16043 | uintptr_t val = 1 | (uintptr_t) *psymp; | |
16044 | ||
16045 | lookup = (void *) val; | |
16046 | } | |
16047 | else | |
16048 | lookup = *psymp; | |
16049 | ||
16050 | /* Only add a given psymbol once. */ | |
16051 | slot = htab_find_slot (psyms_seen, lookup, INSERT); | |
16052 | if (!*slot) | |
16053 | { | |
16054 | *slot = lookup; | |
16055 | add_index_entry (symtab, SYMBOL_NATURAL_NAME (*psymp), cu_index); | |
16056 | } | |
9291a0cd TT |
16057 | } |
16058 | } | |
16059 | ||
16060 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
16061 | exception if there is an error. */ | |
b89be57b | 16062 | |
9291a0cd TT |
16063 | static void |
16064 | write_obstack (FILE *file, struct obstack *obstack) | |
16065 | { | |
16066 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
16067 | file) | |
16068 | != obstack_object_size (obstack)) | |
16069 | error (_("couldn't data write to file")); | |
16070 | } | |
16071 | ||
16072 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 16073 | |
9291a0cd TT |
16074 | static void |
16075 | unlink_if_set (void *p) | |
16076 | { | |
16077 | char **filename = p; | |
16078 | if (*filename) | |
16079 | unlink (*filename); | |
16080 | } | |
16081 | ||
1fd400ff TT |
16082 | /* A helper struct used when iterating over debug_types. */ |
16083 | struct signatured_type_index_data | |
16084 | { | |
16085 | struct objfile *objfile; | |
16086 | struct mapped_symtab *symtab; | |
16087 | struct obstack *types_list; | |
987d643c | 16088 | htab_t psyms_seen; |
1fd400ff TT |
16089 | int cu_index; |
16090 | }; | |
16091 | ||
16092 | /* A helper function that writes a single signatured_type to an | |
16093 | obstack. */ | |
b89be57b | 16094 | |
1fd400ff TT |
16095 | static int |
16096 | write_one_signatured_type (void **slot, void *d) | |
16097 | { | |
16098 | struct signatured_type_index_data *info = d; | |
16099 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
e254ef6a DE |
16100 | struct dwarf2_per_cu_data *per_cu = &entry->per_cu; |
16101 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
1fd400ff TT |
16102 | gdb_byte val[8]; |
16103 | ||
16104 | write_psymbols (info->symtab, | |
987d643c | 16105 | info->psyms_seen, |
3e43a32a MS |
16106 | info->objfile->global_psymbols.list |
16107 | + psymtab->globals_offset, | |
987d643c TT |
16108 | psymtab->n_global_syms, info->cu_index, |
16109 | 0); | |
1fd400ff | 16110 | write_psymbols (info->symtab, |
987d643c | 16111 | info->psyms_seen, |
3e43a32a MS |
16112 | info->objfile->static_psymbols.list |
16113 | + psymtab->statics_offset, | |
987d643c TT |
16114 | psymtab->n_static_syms, info->cu_index, |
16115 | 1); | |
1fd400ff | 16116 | |
b3c8eb43 | 16117 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->per_cu.offset); |
1fd400ff TT |
16118 | obstack_grow (info->types_list, val, 8); |
16119 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->type_offset); | |
16120 | obstack_grow (info->types_list, val, 8); | |
16121 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
16122 | obstack_grow (info->types_list, val, 8); | |
16123 | ||
16124 | ++info->cu_index; | |
16125 | ||
16126 | return 1; | |
16127 | } | |
16128 | ||
987d643c TT |
16129 | /* A cleanup function for an htab_t. */ |
16130 | ||
16131 | static void | |
16132 | cleanup_htab (void *arg) | |
16133 | { | |
16134 | htab_delete (arg); | |
16135 | } | |
16136 | ||
9291a0cd | 16137 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 16138 | |
9291a0cd TT |
16139 | static void |
16140 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
16141 | { | |
16142 | struct cleanup *cleanup; | |
16143 | char *filename, *cleanup_filename; | |
1fd400ff TT |
16144 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
16145 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
16146 | int i; |
16147 | FILE *out_file; | |
16148 | struct mapped_symtab *symtab; | |
16149 | offset_type val, size_of_contents, total_len; | |
16150 | struct stat st; | |
16151 | char buf[8]; | |
987d643c | 16152 | htab_t psyms_seen; |
0a5429f6 DE |
16153 | htab_t cu_index_htab; |
16154 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 16155 | |
b4f2f049 | 16156 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
9291a0cd | 16157 | return; |
b4f2f049 | 16158 | |
9291a0cd TT |
16159 | if (dwarf2_per_objfile->using_index) |
16160 | error (_("Cannot use an index to create the index")); | |
16161 | ||
16162 | if (stat (objfile->name, &st) < 0) | |
7e17e088 | 16163 | perror_with_name (objfile->name); |
9291a0cd TT |
16164 | |
16165 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
16166 | INDEX_SUFFIX, (char *) NULL); | |
16167 | cleanup = make_cleanup (xfree, filename); | |
16168 | ||
16169 | out_file = fopen (filename, "wb"); | |
16170 | if (!out_file) | |
16171 | error (_("Can't open `%s' for writing"), filename); | |
16172 | ||
16173 | cleanup_filename = filename; | |
16174 | make_cleanup (unlink_if_set, &cleanup_filename); | |
16175 | ||
16176 | symtab = create_mapped_symtab (); | |
16177 | make_cleanup (cleanup_mapped_symtab, symtab); | |
16178 | ||
16179 | obstack_init (&addr_obstack); | |
16180 | make_cleanup_obstack_free (&addr_obstack); | |
16181 | ||
16182 | obstack_init (&cu_list); | |
16183 | make_cleanup_obstack_free (&cu_list); | |
16184 | ||
1fd400ff TT |
16185 | obstack_init (&types_cu_list); |
16186 | make_cleanup_obstack_free (&types_cu_list); | |
16187 | ||
987d643c TT |
16188 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
16189 | NULL, xcalloc, xfree); | |
16190 | make_cleanup (cleanup_htab, psyms_seen); | |
16191 | ||
0a5429f6 DE |
16192 | /* While we're scanning CU's create a table that maps a psymtab pointer |
16193 | (which is what addrmap records) to its index (which is what is recorded | |
16194 | in the index file). This will later be needed to write the address | |
16195 | table. */ | |
16196 | cu_index_htab = htab_create_alloc (100, | |
16197 | hash_psymtab_cu_index, | |
16198 | eq_psymtab_cu_index, | |
16199 | NULL, xcalloc, xfree); | |
16200 | make_cleanup (cleanup_htab, cu_index_htab); | |
16201 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) | |
16202 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
16203 | * dwarf2_per_objfile->n_comp_units); | |
16204 | make_cleanup (xfree, psymtab_cu_index_map); | |
16205 | ||
16206 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
16207 | work here. Also, the debug_types entries do not appear in |
16208 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
16209 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
16210 | { | |
3e43a32a MS |
16211 | struct dwarf2_per_cu_data *per_cu |
16212 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 16213 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 16214 | gdb_byte val[8]; |
0a5429f6 DE |
16215 | struct psymtab_cu_index_map *map; |
16216 | void **slot; | |
9291a0cd TT |
16217 | |
16218 | write_psymbols (symtab, | |
987d643c | 16219 | psyms_seen, |
9291a0cd | 16220 | objfile->global_psymbols.list + psymtab->globals_offset, |
987d643c TT |
16221 | psymtab->n_global_syms, i, |
16222 | 0); | |
9291a0cd | 16223 | write_psymbols (symtab, |
987d643c | 16224 | psyms_seen, |
9291a0cd | 16225 | objfile->static_psymbols.list + psymtab->statics_offset, |
987d643c TT |
16226 | psymtab->n_static_syms, i, |
16227 | 1); | |
9291a0cd | 16228 | |
0a5429f6 DE |
16229 | map = &psymtab_cu_index_map[i]; |
16230 | map->psymtab = psymtab; | |
16231 | map->cu_index = i; | |
16232 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
16233 | gdb_assert (slot != NULL); | |
16234 | gdb_assert (*slot == NULL); | |
16235 | *slot = map; | |
9291a0cd | 16236 | |
e254ef6a | 16237 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->offset); |
9291a0cd | 16238 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 16239 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
16240 | obstack_grow (&cu_list, val, 8); |
16241 | } | |
16242 | ||
0a5429f6 DE |
16243 | /* Dump the address map. */ |
16244 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
16245 | ||
1fd400ff TT |
16246 | /* Write out the .debug_type entries, if any. */ |
16247 | if (dwarf2_per_objfile->signatured_types) | |
16248 | { | |
16249 | struct signatured_type_index_data sig_data; | |
16250 | ||
16251 | sig_data.objfile = objfile; | |
16252 | sig_data.symtab = symtab; | |
16253 | sig_data.types_list = &types_cu_list; | |
987d643c | 16254 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
16255 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
16256 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
16257 | write_one_signatured_type, &sig_data); | |
16258 | } | |
16259 | ||
9291a0cd TT |
16260 | obstack_init (&constant_pool); |
16261 | make_cleanup_obstack_free (&constant_pool); | |
16262 | obstack_init (&symtab_obstack); | |
16263 | make_cleanup_obstack_free (&symtab_obstack); | |
16264 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
16265 | ||
16266 | obstack_init (&contents); | |
16267 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 16268 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
16269 | total_len = size_of_contents; |
16270 | ||
16271 | /* The version number. */ | |
559a7a62 | 16272 | val = MAYBE_SWAP (5); |
9291a0cd TT |
16273 | obstack_grow (&contents, &val, sizeof (val)); |
16274 | ||
16275 | /* The offset of the CU list from the start of the file. */ | |
16276 | val = MAYBE_SWAP (total_len); | |
16277 | obstack_grow (&contents, &val, sizeof (val)); | |
16278 | total_len += obstack_object_size (&cu_list); | |
16279 | ||
1fd400ff TT |
16280 | /* The offset of the types CU list from the start of the file. */ |
16281 | val = MAYBE_SWAP (total_len); | |
16282 | obstack_grow (&contents, &val, sizeof (val)); | |
16283 | total_len += obstack_object_size (&types_cu_list); | |
16284 | ||
9291a0cd TT |
16285 | /* The offset of the address table from the start of the file. */ |
16286 | val = MAYBE_SWAP (total_len); | |
16287 | obstack_grow (&contents, &val, sizeof (val)); | |
16288 | total_len += obstack_object_size (&addr_obstack); | |
16289 | ||
16290 | /* The offset of the symbol table from the start of the file. */ | |
16291 | val = MAYBE_SWAP (total_len); | |
16292 | obstack_grow (&contents, &val, sizeof (val)); | |
16293 | total_len += obstack_object_size (&symtab_obstack); | |
16294 | ||
16295 | /* The offset of the constant pool from the start of the file. */ | |
16296 | val = MAYBE_SWAP (total_len); | |
16297 | obstack_grow (&contents, &val, sizeof (val)); | |
16298 | total_len += obstack_object_size (&constant_pool); | |
16299 | ||
16300 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
16301 | ||
16302 | write_obstack (out_file, &contents); | |
16303 | write_obstack (out_file, &cu_list); | |
1fd400ff | 16304 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
16305 | write_obstack (out_file, &addr_obstack); |
16306 | write_obstack (out_file, &symtab_obstack); | |
16307 | write_obstack (out_file, &constant_pool); | |
16308 | ||
16309 | fclose (out_file); | |
16310 | ||
16311 | /* We want to keep the file, so we set cleanup_filename to NULL | |
16312 | here. See unlink_if_set. */ | |
16313 | cleanup_filename = NULL; | |
16314 | ||
16315 | do_cleanups (cleanup); | |
16316 | } | |
16317 | ||
90476074 TT |
16318 | /* Implementation of the `save gdb-index' command. |
16319 | ||
16320 | Note that the file format used by this command is documented in the | |
16321 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 16322 | |
9291a0cd TT |
16323 | static void |
16324 | save_gdb_index_command (char *arg, int from_tty) | |
16325 | { | |
16326 | struct objfile *objfile; | |
16327 | ||
16328 | if (!arg || !*arg) | |
96d19272 | 16329 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
16330 | |
16331 | ALL_OBJFILES (objfile) | |
16332 | { | |
16333 | struct stat st; | |
16334 | ||
16335 | /* If the objfile does not correspond to an actual file, skip it. */ | |
16336 | if (stat (objfile->name, &st) < 0) | |
16337 | continue; | |
16338 | ||
16339 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
16340 | if (dwarf2_per_objfile) | |
16341 | { | |
16342 | volatile struct gdb_exception except; | |
16343 | ||
16344 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
16345 | { | |
16346 | write_psymtabs_to_index (objfile, arg); | |
16347 | } | |
16348 | if (except.reason < 0) | |
16349 | exception_fprintf (gdb_stderr, except, | |
16350 | _("Error while writing index for `%s': "), | |
16351 | objfile->name); | |
16352 | } | |
16353 | } | |
dce234bc PP |
16354 | } |
16355 | ||
9291a0cd TT |
16356 | \f |
16357 | ||
9eae7c52 TT |
16358 | int dwarf2_always_disassemble; |
16359 | ||
16360 | static void | |
16361 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
16362 | struct cmd_list_element *c, const char *value) | |
16363 | { | |
3e43a32a MS |
16364 | fprintf_filtered (file, |
16365 | _("Whether to always disassemble " | |
16366 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
16367 | value); |
16368 | } | |
16369 | ||
900e11f9 JK |
16370 | static void |
16371 | show_check_physname (struct ui_file *file, int from_tty, | |
16372 | struct cmd_list_element *c, const char *value) | |
16373 | { | |
16374 | fprintf_filtered (file, | |
16375 | _("Whether to check \"physname\" is %s.\n"), | |
16376 | value); | |
16377 | } | |
16378 | ||
6502dd73 DJ |
16379 | void _initialize_dwarf2_read (void); |
16380 | ||
16381 | void | |
16382 | _initialize_dwarf2_read (void) | |
16383 | { | |
96d19272 JK |
16384 | struct cmd_list_element *c; |
16385 | ||
dce234bc | 16386 | dwarf2_objfile_data_key |
c1bd65d0 | 16387 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 16388 | |
1bedd215 AC |
16389 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
16390 | Set DWARF 2 specific variables.\n\ | |
16391 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
16392 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
16393 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
16394 | ||
1bedd215 AC |
16395 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
16396 | Show DWARF 2 specific variables\n\ | |
16397 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
16398 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
16399 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
16400 | ||
16401 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
16402 | &dwarf2_max_cache_age, _("\ |
16403 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
16404 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
16405 | A higher limit means that cached compilation units will be stored\n\ | |
16406 | in memory longer, and more total memory will be used. Zero disables\n\ | |
16407 | caching, which can slow down startup."), | |
2c5b56ce | 16408 | NULL, |
920d2a44 | 16409 | show_dwarf2_max_cache_age, |
2c5b56ce | 16410 | &set_dwarf2_cmdlist, |
ae038cb0 | 16411 | &show_dwarf2_cmdlist); |
d97bc12b | 16412 | |
9eae7c52 TT |
16413 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
16414 | &dwarf2_always_disassemble, _("\ | |
16415 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
16416 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
16417 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
16418 | syntax. When disabled, expressions will be printed in a more\n\ | |
16419 | conversational style, when possible."), | |
16420 | NULL, | |
16421 | show_dwarf2_always_disassemble, | |
16422 | &set_dwarf2_cmdlist, | |
16423 | &show_dwarf2_cmdlist); | |
16424 | ||
d97bc12b DE |
16425 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
16426 | Set debugging of the dwarf2 DIE reader."), _("\ | |
16427 | Show debugging of the dwarf2 DIE reader."), _("\ | |
16428 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
16429 | The value is the maximum depth to print."), | |
16430 | NULL, | |
16431 | NULL, | |
16432 | &setdebuglist, &showdebuglist); | |
9291a0cd | 16433 | |
900e11f9 JK |
16434 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
16435 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
16436 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
16437 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
16438 | the demangler."), | |
16439 | NULL, show_check_physname, | |
16440 | &setdebuglist, &showdebuglist); | |
16441 | ||
96d19272 | 16442 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 16443 | _("\ |
fc1a9d6e | 16444 | Save a gdb-index file.\n\ |
11570e71 | 16445 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
16446 | &save_cmdlist); |
16447 | set_cmd_completer (c, filename_completer); | |
6502dd73 | 16448 | } |