Commit | Line | Data |
---|---|---|
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, |
4c38e0a4 | 4 | 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
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" | |
4c2df51b | 60 | |
c906108c SS |
61 | #include <fcntl.h> |
62 | #include "gdb_string.h" | |
4bdf3d34 | 63 | #include "gdb_assert.h" |
c906108c | 64 | #include <sys/types.h> |
233a11ab CS |
65 | #ifdef HAVE_ZLIB_H |
66 | #include <zlib.h> | |
67 | #endif | |
dce234bc PP |
68 | #ifdef HAVE_MMAP |
69 | #include <sys/mman.h> | |
85d9bd0e TT |
70 | #ifndef MAP_FAILED |
71 | #define MAP_FAILED ((void *) -1) | |
72 | #endif | |
dce234bc | 73 | #endif |
d8151005 | 74 | |
34eaf542 TT |
75 | typedef struct symbol *symbolp; |
76 | DEF_VEC_P (symbolp); | |
77 | ||
107d2387 | 78 | #if 0 |
357e46e7 | 79 | /* .debug_info header for a compilation unit |
c906108c SS |
80 | Because of alignment constraints, this structure has padding and cannot |
81 | be mapped directly onto the beginning of the .debug_info section. */ | |
82 | typedef struct comp_unit_header | |
83 | { | |
84 | unsigned int length; /* length of the .debug_info | |
85 | contribution */ | |
86 | unsigned short version; /* version number -- 2 for DWARF | |
87 | version 2 */ | |
88 | unsigned int abbrev_offset; /* offset into .debug_abbrev section */ | |
89 | unsigned char addr_size; /* byte size of an address -- 4 */ | |
90 | } | |
91 | _COMP_UNIT_HEADER; | |
92 | #define _ACTUAL_COMP_UNIT_HEADER_SIZE 11 | |
107d2387 | 93 | #endif |
c906108c | 94 | |
c906108c SS |
95 | /* .debug_line statement program prologue |
96 | Because of alignment constraints, this structure has padding and cannot | |
97 | be mapped directly onto the beginning of the .debug_info section. */ | |
98 | typedef struct statement_prologue | |
99 | { | |
100 | unsigned int total_length; /* byte length of the statement | |
101 | information */ | |
102 | unsigned short version; /* version number -- 2 for DWARF | |
103 | version 2 */ | |
104 | unsigned int prologue_length; /* # bytes between prologue & | |
105 | stmt program */ | |
106 | unsigned char minimum_instruction_length; /* byte size of | |
107 | smallest instr */ | |
108 | unsigned char default_is_stmt; /* initial value of is_stmt | |
109 | register */ | |
110 | char line_base; | |
111 | unsigned char line_range; | |
112 | unsigned char opcode_base; /* number assigned to first special | |
113 | opcode */ | |
114 | unsigned char *standard_opcode_lengths; | |
115 | } | |
116 | _STATEMENT_PROLOGUE; | |
117 | ||
d97bc12b DE |
118 | /* When non-zero, dump DIEs after they are read in. */ |
119 | static int dwarf2_die_debug = 0; | |
120 | ||
dce234bc PP |
121 | static int pagesize; |
122 | ||
df8a16a1 DJ |
123 | /* When set, the file that we're processing is known to have debugging |
124 | info for C++ namespaces. GCC 3.3.x did not produce this information, | |
125 | but later versions do. */ | |
126 | ||
127 | static int processing_has_namespace_info; | |
128 | ||
6502dd73 DJ |
129 | static const struct objfile_data *dwarf2_objfile_data_key; |
130 | ||
dce234bc PP |
131 | struct dwarf2_section_info |
132 | { | |
133 | asection *asection; | |
134 | gdb_byte *buffer; | |
135 | bfd_size_type size; | |
136 | int was_mmapped; | |
be391dca TT |
137 | /* True if we have tried to read this section. */ |
138 | int readin; | |
dce234bc PP |
139 | }; |
140 | ||
9291a0cd TT |
141 | /* All offsets in the index are of this type. It must be |
142 | architecture-independent. */ | |
143 | typedef uint32_t offset_type; | |
144 | ||
145 | DEF_VEC_I (offset_type); | |
146 | ||
147 | /* A description of the mapped index. The file format is described in | |
148 | a comment by the code that writes the index. */ | |
149 | struct mapped_index | |
150 | { | |
151 | /* The total length of the buffer. */ | |
152 | off_t total_size; | |
153 | /* A pointer to the address table data. */ | |
154 | const gdb_byte *address_table; | |
155 | /* Size of the address table data in bytes. */ | |
156 | offset_type address_table_size; | |
157 | /* The hash table. */ | |
158 | const offset_type *index_table; | |
159 | /* Size in slots, each slot is 2 offset_types. */ | |
160 | offset_type index_table_slots; | |
161 | /* A pointer to the constant pool. */ | |
162 | const char *constant_pool; | |
163 | }; | |
164 | ||
6502dd73 DJ |
165 | struct dwarf2_per_objfile |
166 | { | |
dce234bc PP |
167 | struct dwarf2_section_info info; |
168 | struct dwarf2_section_info abbrev; | |
169 | struct dwarf2_section_info line; | |
dce234bc PP |
170 | struct dwarf2_section_info loc; |
171 | struct dwarf2_section_info macinfo; | |
172 | struct dwarf2_section_info str; | |
173 | struct dwarf2_section_info ranges; | |
348e048f | 174 | struct dwarf2_section_info types; |
dce234bc PP |
175 | struct dwarf2_section_info frame; |
176 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 177 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 178 | |
be391dca TT |
179 | /* Back link. */ |
180 | struct objfile *objfile; | |
181 | ||
10b3939b DJ |
182 | /* A list of all the compilation units. This is used to locate |
183 | the target compilation unit of a particular reference. */ | |
ae038cb0 DJ |
184 | struct dwarf2_per_cu_data **all_comp_units; |
185 | ||
186 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
187 | int n_comp_units; | |
188 | ||
1fd400ff TT |
189 | /* The number of .debug_types-related CUs. */ |
190 | int n_type_comp_units; | |
191 | ||
192 | /* The .debug_types-related CUs. */ | |
193 | struct dwarf2_per_cu_data **type_comp_units; | |
194 | ||
ae038cb0 DJ |
195 | /* A chain of compilation units that are currently read in, so that |
196 | they can be freed later. */ | |
197 | struct dwarf2_per_cu_data *read_in_chain; | |
72dca2f5 | 198 | |
348e048f DE |
199 | /* A table mapping .debug_types signatures to its signatured_type entry. |
200 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
201 | htab_t signatured_types; | |
202 | ||
72dca2f5 FR |
203 | /* A flag indicating wether this objfile has a section loaded at a |
204 | VMA of 0. */ | |
205 | int has_section_at_zero; | |
9291a0cd TT |
206 | |
207 | /* True if we are using the mapped index. */ | |
208 | unsigned char using_index; | |
209 | ||
210 | /* The mapped index. */ | |
211 | struct mapped_index *index_table; | |
98bfdba5 PA |
212 | |
213 | /* Set during partial symbol reading, to prevent queueing of full | |
214 | symbols. */ | |
215 | int reading_partial_symbols; | |
673bfd45 DE |
216 | |
217 | /* Table mapping type .debug_info DIE offsets to types. | |
218 | This is NULL if not allocated yet. | |
219 | It (currently) makes sense to allocate debug_types_type_hash lazily. | |
220 | To keep things simple we allocate both lazily. */ | |
221 | htab_t debug_info_type_hash; | |
222 | ||
223 | /* Table mapping type .debug_types DIE offsets to types. | |
224 | This is NULL if not allocated yet. */ | |
225 | htab_t debug_types_type_hash; | |
6502dd73 DJ |
226 | }; |
227 | ||
228 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c SS |
229 | |
230 | /* names of the debugging sections */ | |
231 | ||
233a11ab CS |
232 | /* Note that if the debugging section has been compressed, it might |
233 | have a name like .zdebug_info. */ | |
234 | ||
235 | #define INFO_SECTION "debug_info" | |
236 | #define ABBREV_SECTION "debug_abbrev" | |
237 | #define LINE_SECTION "debug_line" | |
233a11ab CS |
238 | #define LOC_SECTION "debug_loc" |
239 | #define MACINFO_SECTION "debug_macinfo" | |
240 | #define STR_SECTION "debug_str" | |
241 | #define RANGES_SECTION "debug_ranges" | |
348e048f | 242 | #define TYPES_SECTION "debug_types" |
233a11ab CS |
243 | #define FRAME_SECTION "debug_frame" |
244 | #define EH_FRAME_SECTION "eh_frame" | |
9291a0cd | 245 | #define GDB_INDEX_SECTION "gdb_index" |
c906108c SS |
246 | |
247 | /* local data types */ | |
248 | ||
57349743 JB |
249 | /* We hold several abbreviation tables in memory at the same time. */ |
250 | #ifndef ABBREV_HASH_SIZE | |
251 | #define ABBREV_HASH_SIZE 121 | |
252 | #endif | |
253 | ||
107d2387 AC |
254 | /* The data in a compilation unit header, after target2host |
255 | translation, looks like this. */ | |
c906108c | 256 | struct comp_unit_head |
a738430d | 257 | { |
c764a876 | 258 | unsigned int length; |
a738430d | 259 | short version; |
a738430d MK |
260 | unsigned char addr_size; |
261 | unsigned char signed_addr_p; | |
9cbfa09e | 262 | unsigned int abbrev_offset; |
57349743 | 263 | |
a738430d MK |
264 | /* Size of file offsets; either 4 or 8. */ |
265 | unsigned int offset_size; | |
57349743 | 266 | |
a738430d MK |
267 | /* Size of the length field; either 4 or 12. */ |
268 | unsigned int initial_length_size; | |
57349743 | 269 | |
a738430d MK |
270 | /* Offset to the first byte of this compilation unit header in the |
271 | .debug_info section, for resolving relative reference dies. */ | |
272 | unsigned int offset; | |
57349743 | 273 | |
d00adf39 DE |
274 | /* Offset to first die in this cu from the start of the cu. |
275 | This will be the first byte following the compilation unit header. */ | |
276 | unsigned int first_die_offset; | |
a738430d | 277 | }; |
c906108c | 278 | |
3da10d80 KS |
279 | /* Type used for delaying computation of method physnames. |
280 | See comments for compute_delayed_physnames. */ | |
281 | struct delayed_method_info | |
282 | { | |
283 | /* The type to which the method is attached, i.e., its parent class. */ | |
284 | struct type *type; | |
285 | ||
286 | /* The index of the method in the type's function fieldlists. */ | |
287 | int fnfield_index; | |
288 | ||
289 | /* The index of the method in the fieldlist. */ | |
290 | int index; | |
291 | ||
292 | /* The name of the DIE. */ | |
293 | const char *name; | |
294 | ||
295 | /* The DIE associated with this method. */ | |
296 | struct die_info *die; | |
297 | }; | |
298 | ||
299 | typedef struct delayed_method_info delayed_method_info; | |
300 | DEF_VEC_O (delayed_method_info); | |
301 | ||
e7c27a73 DJ |
302 | /* Internal state when decoding a particular compilation unit. */ |
303 | struct dwarf2_cu | |
304 | { | |
305 | /* The objfile containing this compilation unit. */ | |
306 | struct objfile *objfile; | |
307 | ||
d00adf39 | 308 | /* The header of the compilation unit. */ |
e7c27a73 | 309 | struct comp_unit_head header; |
e142c38c | 310 | |
d00adf39 DE |
311 | /* Base address of this compilation unit. */ |
312 | CORE_ADDR base_address; | |
313 | ||
314 | /* Non-zero if base_address has been set. */ | |
315 | int base_known; | |
316 | ||
e142c38c DJ |
317 | struct function_range *first_fn, *last_fn, *cached_fn; |
318 | ||
319 | /* The language we are debugging. */ | |
320 | enum language language; | |
321 | const struct language_defn *language_defn; | |
322 | ||
b0f35d58 DL |
323 | const char *producer; |
324 | ||
e142c38c DJ |
325 | /* The generic symbol table building routines have separate lists for |
326 | file scope symbols and all all other scopes (local scopes). So | |
327 | we need to select the right one to pass to add_symbol_to_list(). | |
328 | We do it by keeping a pointer to the correct list in list_in_scope. | |
329 | ||
330 | FIXME: The original dwarf code just treated the file scope as the | |
331 | first local scope, and all other local scopes as nested local | |
332 | scopes, and worked fine. Check to see if we really need to | |
333 | distinguish these in buildsym.c. */ | |
334 | struct pending **list_in_scope; | |
335 | ||
f3dd6933 DJ |
336 | /* DWARF abbreviation table associated with this compilation unit. */ |
337 | struct abbrev_info **dwarf2_abbrevs; | |
338 | ||
339 | /* Storage for the abbrev table. */ | |
340 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
341 | |
342 | /* Hash table holding all the loaded partial DIEs. */ | |
343 | htab_t partial_dies; | |
344 | ||
345 | /* Storage for things with the same lifetime as this read-in compilation | |
346 | unit, including partial DIEs. */ | |
347 | struct obstack comp_unit_obstack; | |
348 | ||
ae038cb0 DJ |
349 | /* When multiple dwarf2_cu structures are living in memory, this field |
350 | chains them all together, so that they can be released efficiently. | |
351 | We will probably also want a generation counter so that most-recently-used | |
352 | compilation units are cached... */ | |
353 | struct dwarf2_per_cu_data *read_in_chain; | |
354 | ||
355 | /* Backchain to our per_cu entry if the tree has been built. */ | |
356 | struct dwarf2_per_cu_data *per_cu; | |
357 | ||
358 | /* How many compilation units ago was this CU last referenced? */ | |
359 | int last_used; | |
360 | ||
10b3939b | 361 | /* A hash table of die offsets for following references. */ |
51545339 | 362 | htab_t die_hash; |
10b3939b DJ |
363 | |
364 | /* Full DIEs if read in. */ | |
365 | struct die_info *dies; | |
366 | ||
367 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
368 | units referenced by this one. Only set during full symbol processing; | |
369 | partial symbol tables do not have dependencies. */ | |
370 | htab_t dependencies; | |
371 | ||
cb1df416 DJ |
372 | /* Header data from the line table, during full symbol processing. */ |
373 | struct line_header *line_header; | |
374 | ||
3da10d80 KS |
375 | /* A list of methods which need to have physnames computed |
376 | after all type information has been read. */ | |
377 | VEC (delayed_method_info) *method_list; | |
378 | ||
ae038cb0 DJ |
379 | /* Mark used when releasing cached dies. */ |
380 | unsigned int mark : 1; | |
381 | ||
382 | /* This flag will be set if this compilation unit might include | |
383 | inter-compilation-unit references. */ | |
384 | unsigned int has_form_ref_addr : 1; | |
385 | ||
72bf9492 DJ |
386 | /* This flag will be set if this compilation unit includes any |
387 | DW_TAG_namespace DIEs. If we know that there are explicit | |
388 | DIEs for namespaces, we don't need to try to infer them | |
389 | from mangled names. */ | |
390 | unsigned int has_namespace_info : 1; | |
e7c27a73 DJ |
391 | }; |
392 | ||
9291a0cd TT |
393 | /* When using the index (and thus not using psymtabs), each CU has an |
394 | object of this type. This is used to hold information needed by | |
395 | the various "quick" methods. */ | |
396 | struct dwarf2_per_cu_quick_data | |
397 | { | |
398 | /* The line table. This can be NULL if there was no line table. */ | |
399 | struct line_header *lines; | |
400 | ||
401 | /* The file names from the line table. */ | |
402 | const char **file_names; | |
403 | /* The file names from the line table after being run through | |
404 | gdb_realpath. */ | |
405 | const char **full_names; | |
406 | ||
407 | /* The corresponding symbol table. This is NULL if symbols for this | |
408 | CU have not yet been read. */ | |
409 | struct symtab *symtab; | |
410 | ||
411 | /* A temporary mark bit used when iterating over all CUs in | |
412 | expand_symtabs_matching. */ | |
413 | unsigned int mark : 1; | |
414 | ||
415 | /* True if we've tried to read the line table. */ | |
416 | unsigned int read_lines : 1; | |
417 | }; | |
418 | ||
10b3939b DJ |
419 | /* Persistent data held for a compilation unit, even when not |
420 | processing it. We put a pointer to this structure in the | |
421 | read_symtab_private field of the psymtab. If we encounter | |
422 | inter-compilation-unit references, we also maintain a sorted | |
423 | list of all compilation units. */ | |
424 | ||
ae038cb0 DJ |
425 | struct dwarf2_per_cu_data |
426 | { | |
348e048f | 427 | /* The start offset and length of this compilation unit. 2**29-1 |
ae038cb0 | 428 | bytes should suffice to store the length of any compilation unit |
45452591 DE |
429 | - if it doesn't, GDB will fall over anyway. |
430 | NOTE: Unlike comp_unit_head.length, this length includes | |
431 | initial_length_size. */ | |
c764a876 | 432 | unsigned int offset; |
348e048f | 433 | unsigned int length : 29; |
ae038cb0 DJ |
434 | |
435 | /* Flag indicating this compilation unit will be read in before | |
436 | any of the current compilation units are processed. */ | |
c764a876 | 437 | unsigned int queued : 1; |
ae038cb0 | 438 | |
5afb4e99 DJ |
439 | /* This flag will be set if we need to load absolutely all DIEs |
440 | for this compilation unit, instead of just the ones we think | |
441 | are interesting. It gets set if we look for a DIE in the | |
442 | hash table and don't find it. */ | |
443 | unsigned int load_all_dies : 1; | |
444 | ||
348e048f DE |
445 | /* Non-zero if this CU is from .debug_types. |
446 | Otherwise it's from .debug_info. */ | |
447 | unsigned int from_debug_types : 1; | |
448 | ||
17ea53c3 JK |
449 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
450 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 451 | struct dwarf2_cu *cu; |
1c379e20 | 452 | |
9291a0cd TT |
453 | /* The corresponding objfile. */ |
454 | struct objfile *objfile; | |
455 | ||
456 | /* When using partial symbol tables, the 'psymtab' field is active. | |
457 | Otherwise the 'quick' field is active. */ | |
458 | union | |
459 | { | |
460 | /* The partial symbol table associated with this compilation unit, | |
461 | or NULL for partial units (which do not have an associated | |
462 | symtab). */ | |
463 | struct partial_symtab *psymtab; | |
464 | ||
465 | /* Data needed by the "quick" functions. */ | |
466 | struct dwarf2_per_cu_quick_data *quick; | |
467 | } v; | |
ae038cb0 DJ |
468 | }; |
469 | ||
348e048f DE |
470 | /* Entry in the signatured_types hash table. */ |
471 | ||
472 | struct signatured_type | |
473 | { | |
474 | ULONGEST signature; | |
475 | ||
476 | /* Offset in .debug_types of the TU (type_unit) for this type. */ | |
477 | unsigned int offset; | |
478 | ||
479 | /* Offset in .debug_types of the type defined by this TU. */ | |
480 | unsigned int type_offset; | |
481 | ||
482 | /* The CU(/TU) of this type. */ | |
483 | struct dwarf2_per_cu_data per_cu; | |
484 | }; | |
485 | ||
93311388 DE |
486 | /* Struct used to pass misc. parameters to read_die_and_children, et. al. |
487 | which are used for both .debug_info and .debug_types dies. | |
488 | All parameters here are unchanging for the life of the call. | |
489 | This struct exists to abstract away the constant parameters of | |
490 | die reading. */ | |
491 | ||
492 | struct die_reader_specs | |
493 | { | |
494 | /* The bfd of this objfile. */ | |
495 | bfd* abfd; | |
496 | ||
497 | /* The CU of the DIE we are parsing. */ | |
498 | struct dwarf2_cu *cu; | |
499 | ||
500 | /* Pointer to start of section buffer. | |
501 | This is either the start of .debug_info or .debug_types. */ | |
502 | const gdb_byte *buffer; | |
503 | }; | |
504 | ||
debd256d JB |
505 | /* The line number information for a compilation unit (found in the |
506 | .debug_line section) begins with a "statement program header", | |
507 | which contains the following information. */ | |
508 | struct line_header | |
509 | { | |
510 | unsigned int total_length; | |
511 | unsigned short version; | |
512 | unsigned int header_length; | |
513 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 514 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
515 | unsigned char default_is_stmt; |
516 | int line_base; | |
517 | unsigned char line_range; | |
518 | unsigned char opcode_base; | |
519 | ||
520 | /* standard_opcode_lengths[i] is the number of operands for the | |
521 | standard opcode whose value is i. This means that | |
522 | standard_opcode_lengths[0] is unused, and the last meaningful | |
523 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
524 | unsigned char *standard_opcode_lengths; | |
525 | ||
526 | /* The include_directories table. NOTE! These strings are not | |
527 | allocated with xmalloc; instead, they are pointers into | |
528 | debug_line_buffer. If you try to free them, `free' will get | |
529 | indigestion. */ | |
530 | unsigned int num_include_dirs, include_dirs_size; | |
531 | char **include_dirs; | |
532 | ||
533 | /* The file_names table. NOTE! These strings are not allocated | |
534 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
535 | Don't try to free them directly. */ | |
536 | unsigned int num_file_names, file_names_size; | |
537 | struct file_entry | |
c906108c | 538 | { |
debd256d JB |
539 | char *name; |
540 | unsigned int dir_index; | |
541 | unsigned int mod_time; | |
542 | unsigned int length; | |
aaa75496 | 543 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 544 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
545 | } *file_names; |
546 | ||
547 | /* The start and end of the statement program following this | |
6502dd73 | 548 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 549 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 550 | }; |
c906108c SS |
551 | |
552 | /* When we construct a partial symbol table entry we only | |
553 | need this much information. */ | |
554 | struct partial_die_info | |
555 | { | |
72bf9492 | 556 | /* Offset of this DIE. */ |
c906108c | 557 | unsigned int offset; |
72bf9492 DJ |
558 | |
559 | /* DWARF-2 tag for this DIE. */ | |
560 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
561 | ||
72bf9492 DJ |
562 | /* Assorted flags describing the data found in this DIE. */ |
563 | unsigned int has_children : 1; | |
564 | unsigned int is_external : 1; | |
565 | unsigned int is_declaration : 1; | |
566 | unsigned int has_type : 1; | |
567 | unsigned int has_specification : 1; | |
568 | unsigned int has_pc_info : 1; | |
569 | ||
570 | /* Flag set if the SCOPE field of this structure has been | |
571 | computed. */ | |
572 | unsigned int scope_set : 1; | |
573 | ||
fa4028e9 JB |
574 | /* Flag set if the DIE has a byte_size attribute. */ |
575 | unsigned int has_byte_size : 1; | |
576 | ||
98bfdba5 PA |
577 | /* Flag set if any of the DIE's children are template arguments. */ |
578 | unsigned int has_template_arguments : 1; | |
579 | ||
abc72ce4 DE |
580 | /* Flag set if fixup_partial_die has been called on this die. */ |
581 | unsigned int fixup_called : 1; | |
582 | ||
72bf9492 | 583 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 584 | sometimes a default name for unnamed DIEs. */ |
c906108c | 585 | char *name; |
72bf9492 | 586 | |
abc72ce4 DE |
587 | /* The linkage name, if present. */ |
588 | const char *linkage_name; | |
589 | ||
72bf9492 DJ |
590 | /* The scope to prepend to our children. This is generally |
591 | allocated on the comp_unit_obstack, so will disappear | |
592 | when this compilation unit leaves the cache. */ | |
593 | char *scope; | |
594 | ||
595 | /* The location description associated with this DIE, if any. */ | |
596 | struct dwarf_block *locdesc; | |
597 | ||
598 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
599 | CORE_ADDR lowpc; |
600 | CORE_ADDR highpc; | |
72bf9492 | 601 | |
93311388 | 602 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 603 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
604 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
605 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
fe1b8b76 | 606 | gdb_byte *sibling; |
72bf9492 DJ |
607 | |
608 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
609 | DW_AT_specification (or DW_AT_abstract_origin or | |
610 | DW_AT_extension). */ | |
611 | unsigned int spec_offset; | |
612 | ||
613 | /* Pointers to this DIE's parent, first child, and next sibling, | |
614 | if any. */ | |
615 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
616 | }; |
617 | ||
618 | /* This data structure holds the information of an abbrev. */ | |
619 | struct abbrev_info | |
620 | { | |
621 | unsigned int number; /* number identifying abbrev */ | |
622 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
623 | unsigned short has_children; /* boolean */ |
624 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
625 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
626 | struct abbrev_info *next; /* next in chain */ | |
627 | }; | |
628 | ||
629 | struct attr_abbrev | |
630 | { | |
9d25dd43 DE |
631 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
632 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
633 | }; |
634 | ||
b60c80d6 DJ |
635 | /* Attributes have a name and a value */ |
636 | struct attribute | |
637 | { | |
9d25dd43 | 638 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
639 | ENUM_BITFIELD(dwarf_form) form : 15; |
640 | ||
641 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
642 | field should be in u.str (existing only for DW_STRING) but it is kept | |
643 | here for better struct attribute alignment. */ | |
644 | unsigned int string_is_canonical : 1; | |
645 | ||
b60c80d6 DJ |
646 | union |
647 | { | |
648 | char *str; | |
649 | struct dwarf_block *blk; | |
43bbcdc2 PH |
650 | ULONGEST unsnd; |
651 | LONGEST snd; | |
b60c80d6 | 652 | CORE_ADDR addr; |
348e048f | 653 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
654 | } |
655 | u; | |
656 | }; | |
657 | ||
c906108c SS |
658 | /* This data structure holds a complete die structure. */ |
659 | struct die_info | |
660 | { | |
76815b17 DE |
661 | /* DWARF-2 tag for this DIE. */ |
662 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
663 | ||
664 | /* Number of attributes */ | |
98bfdba5 PA |
665 | unsigned char num_attrs; |
666 | ||
667 | /* True if we're presently building the full type name for the | |
668 | type derived from this DIE. */ | |
669 | unsigned char building_fullname : 1; | |
76815b17 DE |
670 | |
671 | /* Abbrev number */ | |
672 | unsigned int abbrev; | |
673 | ||
93311388 | 674 | /* Offset in .debug_info or .debug_types section. */ |
76815b17 | 675 | unsigned int offset; |
78ba4af6 JB |
676 | |
677 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
678 | points to this die's parent; CHILD points to the first child of | |
679 | this node; and all the children of a given node are chained | |
4950bc1c | 680 | together via their SIBLING fields. */ |
639d11d3 DC |
681 | struct die_info *child; /* Its first child, if any. */ |
682 | struct die_info *sibling; /* Its next sibling, if any. */ | |
683 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 684 | |
b60c80d6 DJ |
685 | /* An array of attributes, with NUM_ATTRS elements. There may be |
686 | zero, but it's not common and zero-sized arrays are not | |
687 | sufficiently portable C. */ | |
688 | struct attribute attrs[1]; | |
c906108c SS |
689 | }; |
690 | ||
5fb290d7 DJ |
691 | struct function_range |
692 | { | |
693 | const char *name; | |
694 | CORE_ADDR lowpc, highpc; | |
695 | int seen_line; | |
696 | struct function_range *next; | |
697 | }; | |
698 | ||
c906108c SS |
699 | /* Get at parts of an attribute structure */ |
700 | ||
701 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 702 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
703 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
704 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
705 | #define DW_SND(attr) ((attr)->u.snd) | |
706 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 707 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c SS |
708 | |
709 | /* Blocks are a bunch of untyped bytes. */ | |
710 | struct dwarf_block | |
711 | { | |
712 | unsigned int size; | |
fe1b8b76 | 713 | gdb_byte *data; |
c906108c SS |
714 | }; |
715 | ||
c906108c SS |
716 | #ifndef ATTR_ALLOC_CHUNK |
717 | #define ATTR_ALLOC_CHUNK 4 | |
718 | #endif | |
719 | ||
c906108c SS |
720 | /* Allocate fields for structs, unions and enums in this size. */ |
721 | #ifndef DW_FIELD_ALLOC_CHUNK | |
722 | #define DW_FIELD_ALLOC_CHUNK 4 | |
723 | #endif | |
724 | ||
c906108c SS |
725 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
726 | but this would require a corresponding change in unpack_field_as_long | |
727 | and friends. */ | |
728 | static int bits_per_byte = 8; | |
729 | ||
730 | /* The routines that read and process dies for a C struct or C++ class | |
731 | pass lists of data member fields and lists of member function fields | |
732 | in an instance of a field_info structure, as defined below. */ | |
733 | struct field_info | |
c5aa993b JM |
734 | { |
735 | /* List of data member and baseclasses fields. */ | |
736 | struct nextfield | |
737 | { | |
738 | struct nextfield *next; | |
739 | int accessibility; | |
740 | int virtuality; | |
741 | struct field field; | |
742 | } | |
7d0ccb61 | 743 | *fields, *baseclasses; |
c906108c | 744 | |
7d0ccb61 | 745 | /* Number of fields (including baseclasses). */ |
c5aa993b | 746 | int nfields; |
c906108c | 747 | |
c5aa993b JM |
748 | /* Number of baseclasses. */ |
749 | int nbaseclasses; | |
c906108c | 750 | |
c5aa993b JM |
751 | /* Set if the accesibility of one of the fields is not public. */ |
752 | int non_public_fields; | |
c906108c | 753 | |
c5aa993b JM |
754 | /* Member function fields array, entries are allocated in the order they |
755 | are encountered in the object file. */ | |
756 | struct nextfnfield | |
757 | { | |
758 | struct nextfnfield *next; | |
759 | struct fn_field fnfield; | |
760 | } | |
761 | *fnfields; | |
c906108c | 762 | |
c5aa993b JM |
763 | /* Member function fieldlist array, contains name of possibly overloaded |
764 | member function, number of overloaded member functions and a pointer | |
765 | to the head of the member function field chain. */ | |
766 | struct fnfieldlist | |
767 | { | |
768 | char *name; | |
769 | int length; | |
770 | struct nextfnfield *head; | |
771 | } | |
772 | *fnfieldlists; | |
c906108c | 773 | |
c5aa993b JM |
774 | /* Number of entries in the fnfieldlists array. */ |
775 | int nfnfields; | |
98751a41 JK |
776 | |
777 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
778 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
779 | struct typedef_field_list | |
780 | { | |
781 | struct typedef_field field; | |
782 | struct typedef_field_list *next; | |
783 | } | |
784 | *typedef_field_list; | |
785 | unsigned typedef_field_list_count; | |
c5aa993b | 786 | }; |
c906108c | 787 | |
10b3939b DJ |
788 | /* One item on the queue of compilation units to read in full symbols |
789 | for. */ | |
790 | struct dwarf2_queue_item | |
791 | { | |
792 | struct dwarf2_per_cu_data *per_cu; | |
793 | struct dwarf2_queue_item *next; | |
794 | }; | |
795 | ||
796 | /* The current queue. */ | |
797 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
798 | ||
ae038cb0 DJ |
799 | /* Loaded secondary compilation units are kept in memory until they |
800 | have not been referenced for the processing of this many | |
801 | compilation units. Set this to zero to disable caching. Cache | |
802 | sizes of up to at least twenty will improve startup time for | |
803 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
804 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
805 | static void |
806 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
807 | struct cmd_list_element *c, const char *value) | |
808 | { | |
809 | fprintf_filtered (file, _("\ | |
810 | The upper bound on the age of cached dwarf2 compilation units is %s.\n"), | |
811 | value); | |
812 | } | |
813 | ||
ae038cb0 | 814 | |
c906108c SS |
815 | /* Various complaints about symbol reading that don't abort the process */ |
816 | ||
4d3c2250 KB |
817 | static void |
818 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 819 | { |
4d3c2250 | 820 | complaint (&symfile_complaints, |
e2e0b3e5 | 821 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
822 | } |
823 | ||
25e43795 DJ |
824 | static void |
825 | dwarf2_debug_line_missing_file_complaint (void) | |
826 | { | |
827 | complaint (&symfile_complaints, | |
828 | _(".debug_line section has line data without a file")); | |
829 | } | |
830 | ||
59205f5a JB |
831 | static void |
832 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
833 | { | |
834 | complaint (&symfile_complaints, | |
835 | _(".debug_line section has line program sequence without an end")); | |
836 | } | |
837 | ||
4d3c2250 KB |
838 | static void |
839 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 840 | { |
e2e0b3e5 | 841 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
842 | } |
843 | ||
4d3c2250 KB |
844 | static void |
845 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
846 | int arg3) | |
2e276125 | 847 | { |
4d3c2250 | 848 | complaint (&symfile_complaints, |
e2e0b3e5 | 849 | _("const value length mismatch for '%s', got %d, expected %d"), arg1, |
4d3c2250 KB |
850 | arg2, arg3); |
851 | } | |
852 | ||
853 | static void | |
854 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 855 | { |
4d3c2250 | 856 | complaint (&symfile_complaints, |
e2e0b3e5 | 857 | _("macro info runs off end of `.debug_macinfo' section")); |
4d3c2250 KB |
858 | } |
859 | ||
860 | static void | |
861 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 862 | { |
4d3c2250 | 863 | complaint (&symfile_complaints, |
e2e0b3e5 | 864 | _("macro debug info contains a malformed macro definition:\n`%s'"), |
4d3c2250 KB |
865 | arg1); |
866 | } | |
867 | ||
868 | static void | |
869 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 870 | { |
4d3c2250 | 871 | complaint (&symfile_complaints, |
e2e0b3e5 | 872 | _("invalid attribute class or form for '%s' in '%s'"), arg1, arg2); |
4d3c2250 | 873 | } |
c906108c | 874 | |
c906108c SS |
875 | /* local function prototypes */ |
876 | ||
4efb68b1 | 877 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 878 | |
aaa75496 JB |
879 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
880 | struct objfile *); | |
881 | ||
c67a9c90 | 882 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 883 | |
72bf9492 DJ |
884 | static void scan_partial_symbols (struct partial_die_info *, |
885 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 886 | int, struct dwarf2_cu *); |
c906108c | 887 | |
72bf9492 DJ |
888 | static void add_partial_symbol (struct partial_die_info *, |
889 | struct dwarf2_cu *); | |
63d06c5c | 890 | |
72bf9492 DJ |
891 | static void add_partial_namespace (struct partial_die_info *pdi, |
892 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 893 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 894 | |
5d7cb8df JK |
895 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
896 | CORE_ADDR *highpc, int need_pc, | |
897 | struct dwarf2_cu *cu); | |
898 | ||
72bf9492 DJ |
899 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
900 | struct dwarf2_cu *cu); | |
91c24f0a | 901 | |
bc30ff58 JB |
902 | static void add_partial_subprogram (struct partial_die_info *pdi, |
903 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 904 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 905 | |
fe1b8b76 | 906 | static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi, |
93311388 DE |
907 | gdb_byte *buffer, gdb_byte *info_ptr, |
908 | bfd *abfd, struct dwarf2_cu *cu); | |
91c24f0a | 909 | |
a14ed312 | 910 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 911 | |
a14ed312 | 912 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 913 | |
e7c27a73 | 914 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 915 | |
f3dd6933 | 916 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 917 | |
fe1b8b76 | 918 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 919 | struct dwarf2_cu *); |
72bf9492 | 920 | |
57349743 | 921 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 922 | struct dwarf2_cu *); |
c906108c | 923 | |
93311388 DE |
924 | static struct partial_die_info *load_partial_dies (bfd *, |
925 | gdb_byte *, gdb_byte *, | |
926 | int, struct dwarf2_cu *); | |
72bf9492 | 927 | |
fe1b8b76 | 928 | static gdb_byte *read_partial_die (struct partial_die_info *, |
93311388 DE |
929 | struct abbrev_info *abbrev, |
930 | unsigned int, bfd *, | |
931 | gdb_byte *, gdb_byte *, | |
932 | struct dwarf2_cu *); | |
c906108c | 933 | |
c764a876 | 934 | static struct partial_die_info *find_partial_die (unsigned int, |
10b3939b | 935 | struct dwarf2_cu *); |
72bf9492 DJ |
936 | |
937 | static void fixup_partial_die (struct partial_die_info *, | |
938 | struct dwarf2_cu *); | |
939 | ||
fe1b8b76 JB |
940 | static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *, |
941 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 942 | |
fe1b8b76 JB |
943 | static gdb_byte *read_attribute_value (struct attribute *, unsigned, |
944 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
a8329558 | 945 | |
fe1b8b76 | 946 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 947 | |
fe1b8b76 | 948 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 949 | |
fe1b8b76 | 950 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 951 | |
fe1b8b76 | 952 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 953 | |
93311388 | 954 | static ULONGEST read_8_bytes (bfd *, gdb_byte *); |
c906108c | 955 | |
fe1b8b76 | 956 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 957 | unsigned int *); |
c906108c | 958 | |
c764a876 DE |
959 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
960 | ||
961 | static LONGEST read_checked_initial_length_and_offset | |
962 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
963 | unsigned int *, unsigned int *); | |
613e1657 | 964 | |
fe1b8b76 | 965 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
966 | unsigned int *); |
967 | ||
968 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 969 | |
fe1b8b76 | 970 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 971 | |
9b1c24c8 | 972 | static char *read_direct_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 973 | |
fe1b8b76 JB |
974 | static char *read_indirect_string (bfd *, gdb_byte *, |
975 | const struct comp_unit_head *, | |
976 | unsigned int *); | |
4bdf3d34 | 977 | |
fe1b8b76 | 978 | static unsigned long read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 979 | |
fe1b8b76 | 980 | static long read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 981 | |
fe1b8b76 | 982 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 983 | |
e142c38c | 984 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 985 | |
e142c38c DJ |
986 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
987 | struct dwarf2_cu *); | |
c906108c | 988 | |
348e048f DE |
989 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
990 | unsigned int, | |
991 | struct dwarf2_cu *); | |
992 | ||
05cf31d1 JB |
993 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
994 | struct dwarf2_cu *cu); | |
995 | ||
e142c38c | 996 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 997 | |
e142c38c | 998 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 999 | struct dwarf2_cu **); |
63d06c5c | 1000 | |
debd256d JB |
1001 | static void free_line_header (struct line_header *lh); |
1002 | ||
aaa75496 JB |
1003 | static void add_file_name (struct line_header *, char *, unsigned int, |
1004 | unsigned int, unsigned int); | |
1005 | ||
debd256d JB |
1006 | static struct line_header *(dwarf_decode_line_header |
1007 | (unsigned int offset, | |
e7c27a73 | 1008 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
1009 | |
1010 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
aaa75496 | 1011 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 1012 | |
4f1520fb | 1013 | static void dwarf2_start_subfile (char *, char *, char *); |
c906108c | 1014 | |
a14ed312 | 1015 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1016 | struct dwarf2_cu *); |
c906108c | 1017 | |
34eaf542 TT |
1018 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1019 | struct dwarf2_cu *, struct symbol *); | |
1020 | ||
a14ed312 | 1021 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 1022 | struct dwarf2_cu *); |
c906108c | 1023 | |
98bfdba5 PA |
1024 | static void dwarf2_const_value_attr (struct attribute *attr, |
1025 | struct type *type, | |
1026 | const char *name, | |
1027 | struct obstack *obstack, | |
1028 | struct dwarf2_cu *cu, long *value, | |
1029 | gdb_byte **bytes, | |
1030 | struct dwarf2_locexpr_baton **baton); | |
2df3850c | 1031 | |
e7c27a73 | 1032 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1033 | |
b4ba55a1 JB |
1034 | static int need_gnat_info (struct dwarf2_cu *); |
1035 | ||
1036 | static struct type *die_descriptive_type (struct die_info *, struct dwarf2_cu *); | |
1037 | ||
1038 | static void set_descriptive_type (struct type *, struct die_info *, | |
1039 | struct dwarf2_cu *); | |
1040 | ||
e7c27a73 DJ |
1041 | static struct type *die_containing_type (struct die_info *, |
1042 | struct dwarf2_cu *); | |
c906108c | 1043 | |
673bfd45 DE |
1044 | static struct type *lookup_die_type (struct die_info *, struct attribute *, |
1045 | struct dwarf2_cu *); | |
c906108c | 1046 | |
f792889a | 1047 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1048 | |
673bfd45 DE |
1049 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1050 | ||
086ed43d | 1051 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1052 | |
6e70227d | 1053 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1054 | const char *suffix, int physname, |
1055 | struct dwarf2_cu *cu); | |
63d06c5c | 1056 | |
e7c27a73 | 1057 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1058 | |
348e048f DE |
1059 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1060 | ||
e7c27a73 | 1061 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1062 | |
e7c27a73 | 1063 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1064 | |
ff013f42 JK |
1065 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1066 | struct dwarf2_cu *, struct partial_symtab *); | |
1067 | ||
a14ed312 | 1068 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1069 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1070 | struct partial_symtab *); | |
c906108c | 1071 | |
fae299cd DC |
1072 | static void get_scope_pc_bounds (struct die_info *, |
1073 | CORE_ADDR *, CORE_ADDR *, | |
1074 | struct dwarf2_cu *); | |
1075 | ||
801e3a5b JB |
1076 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1077 | CORE_ADDR, struct dwarf2_cu *); | |
1078 | ||
a14ed312 | 1079 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1080 | struct dwarf2_cu *); |
c906108c | 1081 | |
a14ed312 | 1082 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1083 | struct type *, struct dwarf2_cu *); |
c906108c | 1084 | |
a14ed312 | 1085 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1086 | struct die_info *, struct type *, |
e7c27a73 | 1087 | struct dwarf2_cu *); |
c906108c | 1088 | |
a14ed312 | 1089 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 1090 | struct type *, struct dwarf2_cu *); |
c906108c | 1091 | |
134d01f1 | 1092 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1093 | |
e7c27a73 | 1094 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1095 | |
e7c27a73 | 1096 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1097 | |
5d7cb8df JK |
1098 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1099 | ||
27aa8d6a SW |
1100 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1101 | ||
f55ee35c JK |
1102 | static struct type *read_module_type (struct die_info *die, |
1103 | struct dwarf2_cu *cu); | |
1104 | ||
38d518c9 | 1105 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1106 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1107 | |
134d01f1 | 1108 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1109 | |
e7c27a73 | 1110 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1111 | |
6e70227d | 1112 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1113 | struct dwarf2_cu *); |
1114 | ||
93311388 | 1115 | static struct die_info *read_comp_unit (gdb_byte *, struct dwarf2_cu *); |
c906108c | 1116 | |
93311388 DE |
1117 | static struct die_info *read_die_and_children_1 (const struct die_reader_specs *reader, |
1118 | gdb_byte *info_ptr, | |
d97bc12b DE |
1119 | gdb_byte **new_info_ptr, |
1120 | struct die_info *parent); | |
1121 | ||
93311388 DE |
1122 | static struct die_info *read_die_and_children (const struct die_reader_specs *reader, |
1123 | gdb_byte *info_ptr, | |
fe1b8b76 | 1124 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1125 | struct die_info *parent); |
1126 | ||
93311388 DE |
1127 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *reader, |
1128 | gdb_byte *info_ptr, | |
fe1b8b76 | 1129 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1130 | struct die_info *parent); |
1131 | ||
93311388 DE |
1132 | static gdb_byte *read_full_die (const struct die_reader_specs *reader, |
1133 | struct die_info **, gdb_byte *, | |
1134 | int *); | |
1135 | ||
e7c27a73 | 1136 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1137 | |
71c25dea TT |
1138 | static char *dwarf2_canonicalize_name (char *, struct dwarf2_cu *, |
1139 | struct obstack *); | |
1140 | ||
e142c38c | 1141 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1142 | |
98bfdba5 PA |
1143 | static const char *dwarf2_full_name (char *name, |
1144 | struct die_info *die, | |
1145 | struct dwarf2_cu *cu); | |
1146 | ||
e142c38c | 1147 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1148 | struct dwarf2_cu **); |
9219021c | 1149 | |
a14ed312 | 1150 | static char *dwarf_tag_name (unsigned int); |
c906108c | 1151 | |
a14ed312 | 1152 | static char *dwarf_attr_name (unsigned int); |
c906108c | 1153 | |
a14ed312 | 1154 | static char *dwarf_form_name (unsigned int); |
c906108c | 1155 | |
a14ed312 | 1156 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1157 | |
a14ed312 | 1158 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
1159 | |
1160 | #if 0 | |
a14ed312 | 1161 | static char *dwarf_cfi_name (unsigned int); |
c906108c SS |
1162 | #endif |
1163 | ||
f9aca02d | 1164 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1165 | |
d97bc12b DE |
1166 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1167 | ||
1168 | static void dump_die_for_error (struct die_info *); | |
1169 | ||
1170 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1171 | struct die_info *); | |
c906108c | 1172 | |
d97bc12b | 1173 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1174 | |
51545339 | 1175 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1176 | struct dwarf2_cu *); |
c906108c | 1177 | |
93311388 DE |
1178 | static int is_ref_attr (struct attribute *); |
1179 | ||
c764a876 | 1180 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1181 | |
43bbcdc2 | 1182 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1183 | |
348e048f DE |
1184 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1185 | struct attribute *, | |
1186 | struct dwarf2_cu **); | |
1187 | ||
10b3939b DJ |
1188 | static struct die_info *follow_die_ref (struct die_info *, |
1189 | struct attribute *, | |
f2f0e013 | 1190 | struct dwarf2_cu **); |
c906108c | 1191 | |
348e048f DE |
1192 | static struct die_info *follow_die_sig (struct die_info *, |
1193 | struct attribute *, | |
1194 | struct dwarf2_cu **); | |
1195 | ||
1196 | static void read_signatured_type_at_offset (struct objfile *objfile, | |
1197 | unsigned int offset); | |
1198 | ||
1199 | static void read_signatured_type (struct objfile *, | |
1200 | struct signatured_type *type_sig); | |
1201 | ||
c906108c SS |
1202 | /* memory allocation interface */ |
1203 | ||
7b5a2f43 | 1204 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1205 | |
f3dd6933 | 1206 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1207 | |
b60c80d6 | 1208 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1209 | |
e142c38c | 1210 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 1211 | |
e142c38c DJ |
1212 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
1213 | struct dwarf2_cu *); | |
5fb290d7 | 1214 | |
2e276125 | 1215 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 1216 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 1217 | |
8e19ed76 PS |
1218 | static int attr_form_is_block (struct attribute *); |
1219 | ||
3690dd37 JB |
1220 | static int attr_form_is_section_offset (struct attribute *); |
1221 | ||
1222 | static int attr_form_is_constant (struct attribute *); | |
1223 | ||
93e7bd98 DJ |
1224 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1225 | struct symbol *sym, | |
1226 | struct dwarf2_cu *cu); | |
4c2df51b | 1227 | |
93311388 DE |
1228 | static gdb_byte *skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
1229 | struct abbrev_info *abbrev, | |
1230 | struct dwarf2_cu *cu); | |
4bb7a0a7 | 1231 | |
72bf9492 DJ |
1232 | static void free_stack_comp_unit (void *); |
1233 | ||
72bf9492 DJ |
1234 | static hashval_t partial_die_hash (const void *item); |
1235 | ||
1236 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1237 | ||
ae038cb0 | 1238 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
c764a876 | 1239 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 DJ |
1240 | |
1241 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
c764a876 | 1242 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 | 1243 | |
93311388 DE |
1244 | static struct dwarf2_cu *alloc_one_comp_unit (struct objfile *objfile); |
1245 | ||
ae038cb0 DJ |
1246 | static void free_one_comp_unit (void *); |
1247 | ||
1248 | static void free_cached_comp_units (void *); | |
1249 | ||
1250 | static void age_cached_comp_units (void); | |
1251 | ||
1252 | static void free_one_cached_comp_unit (void *); | |
1253 | ||
f792889a DJ |
1254 | static struct type *set_die_type (struct die_info *, struct type *, |
1255 | struct dwarf2_cu *); | |
1c379e20 | 1256 | |
ae038cb0 DJ |
1257 | static void create_all_comp_units (struct objfile *); |
1258 | ||
1fd400ff TT |
1259 | static int create_debug_types_hash_table (struct objfile *objfile); |
1260 | ||
93311388 DE |
1261 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1262 | struct objfile *); | |
10b3939b DJ |
1263 | |
1264 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1265 | ||
1266 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1267 | struct dwarf2_per_cu_data *); | |
1268 | ||
ae038cb0 DJ |
1269 | static void dwarf2_mark (struct dwarf2_cu *); |
1270 | ||
1271 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1272 | ||
673bfd45 DE |
1273 | static struct type *get_die_type_at_offset (unsigned int, |
1274 | struct dwarf2_per_cu_data *per_cu); | |
1275 | ||
f792889a | 1276 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1277 | |
9291a0cd TT |
1278 | static void dwarf2_release_queue (void *dummy); |
1279 | ||
1280 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, | |
1281 | struct objfile *objfile); | |
1282 | ||
1283 | static void process_queue (struct objfile *objfile); | |
1284 | ||
1285 | static void find_file_and_directory (struct die_info *die, | |
1286 | struct dwarf2_cu *cu, | |
1287 | char **name, char **comp_dir); | |
1288 | ||
1289 | static char *file_full_name (int file, struct line_header *lh, | |
1290 | const char *comp_dir); | |
1291 | ||
1292 | static gdb_byte *partial_read_comp_unit_head (struct comp_unit_head *header, | |
1293 | gdb_byte *info_ptr, | |
1294 | gdb_byte *buffer, | |
1295 | unsigned int buffer_size, | |
1296 | bfd *abfd); | |
1297 | ||
1298 | static void init_cu_die_reader (struct die_reader_specs *reader, | |
1299 | struct dwarf2_cu *cu); | |
1300 | ||
673bfd45 | 1301 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1302 | |
9291a0cd TT |
1303 | #if WORDS_BIGENDIAN |
1304 | ||
1305 | /* Convert VALUE between big- and little-endian. */ | |
1306 | static offset_type | |
1307 | byte_swap (offset_type value) | |
1308 | { | |
1309 | offset_type result; | |
1310 | ||
1311 | result = (value & 0xff) << 24; | |
1312 | result |= (value & 0xff00) << 8; | |
1313 | result |= (value & 0xff0000) >> 8; | |
1314 | result |= (value & 0xff000000) >> 24; | |
1315 | return result; | |
1316 | } | |
1317 | ||
1318 | #define MAYBE_SWAP(V) byte_swap (V) | |
1319 | ||
1320 | #else | |
1321 | #define MAYBE_SWAP(V) (V) | |
1322 | #endif /* WORDS_BIGENDIAN */ | |
1323 | ||
1324 | /* The suffix for an index file. */ | |
1325 | #define INDEX_SUFFIX ".gdb-index" | |
1326 | ||
3da10d80 KS |
1327 | static const char *dwarf2_physname (char *name, struct die_info *die, |
1328 | struct dwarf2_cu *cu); | |
1329 | ||
c906108c SS |
1330 | /* Try to locate the sections we need for DWARF 2 debugging |
1331 | information and return true if we have enough to do something. */ | |
1332 | ||
1333 | int | |
6502dd73 | 1334 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1335 | { |
be391dca TT |
1336 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1337 | if (!dwarf2_per_objfile) | |
1338 | { | |
1339 | /* Initialize per-objfile state. */ | |
1340 | struct dwarf2_per_objfile *data | |
1341 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1342 | |
be391dca TT |
1343 | memset (data, 0, sizeof (*data)); |
1344 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1345 | dwarf2_per_objfile = data; | |
6502dd73 | 1346 | |
be391dca TT |
1347 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
1348 | dwarf2_per_objfile->objfile = objfile; | |
1349 | } | |
1350 | return (dwarf2_per_objfile->info.asection != NULL | |
1351 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1352 | } |
1353 | ||
233a11ab CS |
1354 | /* When loading sections, we can either look for ".<name>", or for |
1355 | * ".z<name>", which indicates a compressed section. */ | |
1356 | ||
1357 | static int | |
dce234bc | 1358 | section_is_p (const char *section_name, const char *name) |
233a11ab | 1359 | { |
dce234bc PP |
1360 | return (section_name[0] == '.' |
1361 | && (strcmp (section_name + 1, name) == 0 | |
1362 | || (section_name[1] == 'z' | |
1363 | && strcmp (section_name + 2, name) == 0))); | |
233a11ab CS |
1364 | } |
1365 | ||
c906108c SS |
1366 | /* This function is mapped across the sections and remembers the |
1367 | offset and size of each of the debugging sections we are interested | |
1368 | in. */ | |
1369 | ||
1370 | static void | |
72dca2f5 | 1371 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1372 | { |
dce234bc | 1373 | if (section_is_p (sectp->name, INFO_SECTION)) |
c906108c | 1374 | { |
dce234bc PP |
1375 | dwarf2_per_objfile->info.asection = sectp; |
1376 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1377 | } |
dce234bc | 1378 | else if (section_is_p (sectp->name, ABBREV_SECTION)) |
c906108c | 1379 | { |
dce234bc PP |
1380 | dwarf2_per_objfile->abbrev.asection = sectp; |
1381 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1382 | } |
dce234bc | 1383 | else if (section_is_p (sectp->name, LINE_SECTION)) |
c906108c | 1384 | { |
dce234bc PP |
1385 | dwarf2_per_objfile->line.asection = sectp; |
1386 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1387 | } |
dce234bc | 1388 | else if (section_is_p (sectp->name, LOC_SECTION)) |
c906108c | 1389 | { |
dce234bc PP |
1390 | dwarf2_per_objfile->loc.asection = sectp; |
1391 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1392 | } |
dce234bc | 1393 | else if (section_is_p (sectp->name, MACINFO_SECTION)) |
c906108c | 1394 | { |
dce234bc PP |
1395 | dwarf2_per_objfile->macinfo.asection = sectp; |
1396 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1397 | } |
dce234bc | 1398 | else if (section_is_p (sectp->name, STR_SECTION)) |
c906108c | 1399 | { |
dce234bc PP |
1400 | dwarf2_per_objfile->str.asection = sectp; |
1401 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1402 | } |
dce234bc | 1403 | else if (section_is_p (sectp->name, FRAME_SECTION)) |
b6af0555 | 1404 | { |
dce234bc PP |
1405 | dwarf2_per_objfile->frame.asection = sectp; |
1406 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1407 | } |
dce234bc | 1408 | else if (section_is_p (sectp->name, EH_FRAME_SECTION)) |
b6af0555 | 1409 | { |
3799ccc6 | 1410 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
9a619af0 | 1411 | |
3799ccc6 EZ |
1412 | if (aflag & SEC_HAS_CONTENTS) |
1413 | { | |
dce234bc PP |
1414 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1415 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
3799ccc6 | 1416 | } |
b6af0555 | 1417 | } |
dce234bc | 1418 | else if (section_is_p (sectp->name, RANGES_SECTION)) |
af34e669 | 1419 | { |
dce234bc PP |
1420 | dwarf2_per_objfile->ranges.asection = sectp; |
1421 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1422 | } |
348e048f DE |
1423 | else if (section_is_p (sectp->name, TYPES_SECTION)) |
1424 | { | |
1425 | dwarf2_per_objfile->types.asection = sectp; | |
1426 | dwarf2_per_objfile->types.size = bfd_get_section_size (sectp); | |
1427 | } | |
9291a0cd TT |
1428 | else if (section_is_p (sectp->name, GDB_INDEX_SECTION)) |
1429 | { | |
1430 | dwarf2_per_objfile->gdb_index.asection = sectp; | |
1431 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); | |
1432 | } | |
dce234bc | 1433 | |
72dca2f5 FR |
1434 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1435 | && bfd_section_vma (abfd, sectp) == 0) | |
1436 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1437 | } |
1438 | ||
dce234bc PP |
1439 | /* Decompress a section that was compressed using zlib. Store the |
1440 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
233a11ab CS |
1441 | |
1442 | static void | |
dce234bc PP |
1443 | zlib_decompress_section (struct objfile *objfile, asection *sectp, |
1444 | gdb_byte **outbuf, bfd_size_type *outsize) | |
1445 | { | |
1446 | bfd *abfd = objfile->obfd; | |
1447 | #ifndef HAVE_ZLIB_H | |
1448 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
1449 | "is disabled in this copy of GDB"), | |
1450 | bfd_get_filename (abfd)); | |
1451 | #else | |
1452 | bfd_size_type compressed_size = bfd_get_section_size (sectp); | |
1453 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
affddf13 | 1454 | struct cleanup *cleanup = make_cleanup (xfree, compressed_buffer); |
dce234bc PP |
1455 | bfd_size_type uncompressed_size; |
1456 | gdb_byte *uncompressed_buffer; | |
1457 | z_stream strm; | |
1458 | int rc; | |
1459 | int header_size = 12; | |
1460 | ||
1461 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1462 | || bfd_bread (compressed_buffer, compressed_size, abfd) != compressed_size) | |
1463 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1464 | bfd_get_filename (abfd)); | |
1465 | ||
1466 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
1467 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
1468 | if (compressed_size < header_size | |
1469 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
1470 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
1471 | bfd_get_filename (abfd)); | |
1472 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
1473 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
1474 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
1475 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
1476 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
1477 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
1478 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
1479 | uncompressed_size += compressed_buffer[11]; | |
1480 | ||
1481 | /* It is possible the section consists of several compressed | |
1482 | buffers concatenated together, so we uncompress in a loop. */ | |
1483 | strm.zalloc = NULL; | |
1484 | strm.zfree = NULL; | |
1485 | strm.opaque = NULL; | |
1486 | strm.avail_in = compressed_size - header_size; | |
1487 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
1488 | strm.avail_out = uncompressed_size; | |
1489 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
1490 | uncompressed_size); | |
1491 | rc = inflateInit (&strm); | |
1492 | while (strm.avail_in > 0) | |
1493 | { | |
1494 | if (rc != Z_OK) | |
1495 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
1496 | bfd_get_filename (abfd), rc); | |
1497 | strm.next_out = ((Bytef*) uncompressed_buffer | |
1498 | + (uncompressed_size - strm.avail_out)); | |
1499 | rc = inflate (&strm, Z_FINISH); | |
1500 | if (rc != Z_STREAM_END) | |
1501 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
1502 | bfd_get_filename (abfd), rc); | |
1503 | rc = inflateReset (&strm); | |
1504 | } | |
1505 | rc = inflateEnd (&strm); | |
1506 | if (rc != Z_OK | |
1507 | || strm.avail_out != 0) | |
1508 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
1509 | bfd_get_filename (abfd), rc); | |
1510 | ||
affddf13 | 1511 | do_cleanups (cleanup); |
dce234bc PP |
1512 | *outbuf = uncompressed_buffer; |
1513 | *outsize = uncompressed_size; | |
1514 | #endif | |
233a11ab CS |
1515 | } |
1516 | ||
dce234bc PP |
1517 | /* Read the contents of the section SECTP from object file specified by |
1518 | OBJFILE, store info about the section into INFO. | |
1519 | If the section is compressed, uncompress it before returning. */ | |
c906108c | 1520 | |
dce234bc PP |
1521 | static void |
1522 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1523 | { |
dce234bc PP |
1524 | bfd *abfd = objfile->obfd; |
1525 | asection *sectp = info->asection; | |
1526 | gdb_byte *buf, *retbuf; | |
1527 | unsigned char header[4]; | |
c906108c | 1528 | |
be391dca TT |
1529 | if (info->readin) |
1530 | return; | |
dce234bc PP |
1531 | info->buffer = NULL; |
1532 | info->was_mmapped = 0; | |
be391dca | 1533 | info->readin = 1; |
188dd5d6 | 1534 | |
dce234bc PP |
1535 | if (info->asection == NULL || info->size == 0) |
1536 | return; | |
c906108c | 1537 | |
dce234bc PP |
1538 | /* Check if the file has a 4-byte header indicating compression. */ |
1539 | if (info->size > sizeof (header) | |
1540 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
1541 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
1542 | { | |
1543 | /* Upon decompression, update the buffer and its size. */ | |
1544 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
1545 | { | |
1546 | zlib_decompress_section (objfile, sectp, &info->buffer, | |
1547 | &info->size); | |
1548 | return; | |
1549 | } | |
1550 | } | |
4bdf3d34 | 1551 | |
dce234bc PP |
1552 | #ifdef HAVE_MMAP |
1553 | if (pagesize == 0) | |
1554 | pagesize = getpagesize (); | |
2e276125 | 1555 | |
dce234bc PP |
1556 | /* Only try to mmap sections which are large enough: we don't want to |
1557 | waste space due to fragmentation. Also, only try mmap for sections | |
1558 | without relocations. */ | |
1559 | ||
1560 | if (info->size > 4 * pagesize && (sectp->flags & SEC_RELOC) == 0) | |
1561 | { | |
1562 | off_t pg_offset = sectp->filepos & ~(pagesize - 1); | |
1563 | size_t map_length = info->size + sectp->filepos - pg_offset; | |
1564 | caddr_t retbuf = bfd_mmap (abfd, 0, map_length, PROT_READ, | |
1565 | MAP_PRIVATE, pg_offset); | |
1566 | ||
1567 | if (retbuf != MAP_FAILED) | |
1568 | { | |
1569 | info->was_mmapped = 1; | |
1570 | info->buffer = retbuf + (sectp->filepos & (pagesize - 1)) ; | |
be391dca TT |
1571 | #if HAVE_POSIX_MADVISE |
1572 | posix_madvise (retbuf, map_length, POSIX_MADV_WILLNEED); | |
1573 | #endif | |
dce234bc PP |
1574 | return; |
1575 | } | |
1576 | } | |
1577 | #endif | |
1578 | ||
1579 | /* If we get here, we are a normal, not-compressed section. */ | |
1580 | info->buffer = buf | |
1581 | = obstack_alloc (&objfile->objfile_obstack, info->size); | |
1582 | ||
1583 | /* When debugging .o files, we may need to apply relocations; see | |
1584 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1585 | We never compress sections in .o files, so we only need to | |
1586 | try this when the section is not compressed. */ | |
ac8035ab | 1587 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1588 | if (retbuf != NULL) |
1589 | { | |
1590 | info->buffer = retbuf; | |
1591 | return; | |
1592 | } | |
1593 | ||
1594 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1595 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1596 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1597 | bfd_get_filename (abfd)); | |
1598 | } | |
1599 | ||
1600 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and | |
1601 | SECTION_NAME. */ | |
af34e669 | 1602 | |
dce234bc PP |
1603 | void |
1604 | dwarf2_get_section_info (struct objfile *objfile, const char *section_name, | |
1605 | asection **sectp, gdb_byte **bufp, | |
1606 | bfd_size_type *sizep) | |
1607 | { | |
1608 | struct dwarf2_per_objfile *data | |
1609 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
1610 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
1611 | |
1612 | /* We may see an objfile without any DWARF, in which case we just | |
1613 | return nothing. */ | |
1614 | if (data == NULL) | |
1615 | { | |
1616 | *sectp = NULL; | |
1617 | *bufp = NULL; | |
1618 | *sizep = 0; | |
1619 | return; | |
1620 | } | |
dce234bc PP |
1621 | if (section_is_p (section_name, EH_FRAME_SECTION)) |
1622 | info = &data->eh_frame; | |
1623 | else if (section_is_p (section_name, FRAME_SECTION)) | |
1624 | info = &data->frame; | |
0d53c4c4 | 1625 | else |
f3574227 | 1626 | gdb_assert_not_reached ("unexpected section"); |
dce234bc PP |
1627 | |
1628 | if (info->asection != NULL && info->size != 0 && info->buffer == NULL) | |
1629 | /* We haven't read this section in yet. Do it now. */ | |
1630 | dwarf2_read_section (objfile, info); | |
1631 | ||
1632 | *sectp = info->asection; | |
1633 | *bufp = info->buffer; | |
1634 | *sizep = info->size; | |
1635 | } | |
1636 | ||
9291a0cd TT |
1637 | \f |
1638 | ||
1639 | /* Read in the symbols for PER_CU. OBJFILE is the objfile from which | |
1640 | this CU came. */ | |
1641 | static void | |
1642 | dw2_do_instantiate_symtab (struct objfile *objfile, | |
1643 | struct dwarf2_per_cu_data *per_cu) | |
1644 | { | |
1645 | struct cleanup *back_to; | |
1646 | ||
1647 | back_to = make_cleanup (dwarf2_release_queue, NULL); | |
1648 | ||
1649 | queue_comp_unit (per_cu, objfile); | |
1650 | ||
1651 | if (per_cu->from_debug_types) | |
1652 | read_signatured_type_at_offset (objfile, per_cu->offset); | |
1653 | else | |
1654 | load_full_comp_unit (per_cu, objfile); | |
1655 | ||
1656 | process_queue (objfile); | |
1657 | ||
1658 | /* Age the cache, releasing compilation units that have not | |
1659 | been used recently. */ | |
1660 | age_cached_comp_units (); | |
1661 | ||
1662 | do_cleanups (back_to); | |
1663 | } | |
1664 | ||
1665 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
1666 | the objfile from which this CU came. Returns the resulting symbol | |
1667 | table. */ | |
1668 | static struct symtab * | |
1669 | dw2_instantiate_symtab (struct objfile *objfile, | |
1670 | struct dwarf2_per_cu_data *per_cu) | |
1671 | { | |
1672 | if (!per_cu->v.quick->symtab) | |
1673 | { | |
1674 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
1675 | increment_reading_symtab (); | |
1676 | dw2_do_instantiate_symtab (objfile, per_cu); | |
1677 | do_cleanups (back_to); | |
1678 | } | |
1679 | return per_cu->v.quick->symtab; | |
1680 | } | |
1681 | ||
1fd400ff TT |
1682 | /* Return the CU given its index. */ |
1683 | static struct dwarf2_per_cu_data * | |
1684 | dw2_get_cu (int index) | |
1685 | { | |
1686 | if (index >= dwarf2_per_objfile->n_comp_units) | |
1687 | { | |
1688 | index -= dwarf2_per_objfile->n_comp_units; | |
1689 | return dwarf2_per_objfile->type_comp_units[index]; | |
1690 | } | |
1691 | return dwarf2_per_objfile->all_comp_units[index]; | |
1692 | } | |
1693 | ||
9291a0cd TT |
1694 | /* A helper function that knows how to read a 64-bit value in a way |
1695 | that doesn't make gdb die. Returns 1 if the conversion went ok, 0 | |
1696 | otherwise. */ | |
1697 | static int | |
1698 | extract_cu_value (const char *bytes, ULONGEST *result) | |
1699 | { | |
1700 | if (sizeof (ULONGEST) < 8) | |
1701 | { | |
1702 | int i; | |
1703 | ||
1704 | /* Ignore the upper 4 bytes if they are all zero. */ | |
1705 | for (i = 0; i < 4; ++i) | |
1706 | if (bytes[i + 4] != 0) | |
1707 | return 0; | |
1708 | ||
1709 | *result = extract_unsigned_integer (bytes, 4, BFD_ENDIAN_LITTLE); | |
1710 | } | |
1711 | else | |
1712 | *result = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
1713 | return 1; | |
1714 | } | |
1715 | ||
1716 | /* Read the CU list from the mapped index, and use it to create all | |
1717 | the CU objects for this objfile. Return 0 if something went wrong, | |
1718 | 1 if everything went ok. */ | |
1719 | static int | |
1fd400ff TT |
1720 | create_cus_from_index (struct objfile *objfile, const gdb_byte *cu_list, |
1721 | offset_type cu_list_elements) | |
9291a0cd TT |
1722 | { |
1723 | offset_type i; | |
9291a0cd TT |
1724 | |
1725 | dwarf2_per_objfile->n_comp_units = cu_list_elements / 2; | |
1726 | dwarf2_per_objfile->all_comp_units | |
1727 | = obstack_alloc (&objfile->objfile_obstack, | |
1728 | dwarf2_per_objfile->n_comp_units | |
1729 | * sizeof (struct dwarf2_per_cu_data *)); | |
1730 | ||
1731 | for (i = 0; i < cu_list_elements; i += 2) | |
1732 | { | |
1733 | struct dwarf2_per_cu_data *the_cu; | |
1734 | ULONGEST offset, length; | |
1735 | ||
1736 | if (!extract_cu_value (cu_list, &offset) | |
1737 | || !extract_cu_value (cu_list + 8, &length)) | |
1738 | return 0; | |
1739 | cu_list += 2 * 8; | |
1740 | ||
1741 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1742 | struct dwarf2_per_cu_data); | |
1743 | the_cu->offset = offset; | |
1744 | the_cu->length = length; | |
1745 | the_cu->objfile = objfile; | |
1746 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1747 | struct dwarf2_per_cu_quick_data); | |
1748 | dwarf2_per_objfile->all_comp_units[i / 2] = the_cu; | |
1749 | } | |
1750 | ||
1751 | return 1; | |
1752 | } | |
1753 | ||
1fd400ff | 1754 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 1755 | |
1fd400ff | 1756 | static int |
673bfd45 DE |
1757 | create_signatured_type_table_from_index (struct objfile *objfile, |
1758 | const gdb_byte *bytes, | |
1759 | offset_type elements) | |
1fd400ff TT |
1760 | { |
1761 | offset_type i; | |
673bfd45 | 1762 | htab_t sig_types_hash; |
1fd400ff TT |
1763 | |
1764 | dwarf2_per_objfile->n_type_comp_units = elements / 3; | |
1765 | dwarf2_per_objfile->type_comp_units | |
1766 | = obstack_alloc (&objfile->objfile_obstack, | |
1767 | dwarf2_per_objfile->n_type_comp_units | |
1768 | * sizeof (struct dwarf2_per_cu_data *)); | |
1769 | ||
673bfd45 | 1770 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
1771 | |
1772 | for (i = 0; i < elements; i += 3) | |
1773 | { | |
1774 | struct signatured_type *type_sig; | |
1775 | ULONGEST offset, type_offset, signature; | |
1776 | void **slot; | |
1777 | ||
1778 | if (!extract_cu_value (bytes, &offset) | |
1779 | || !extract_cu_value (bytes + 8, &type_offset)) | |
1780 | return 0; | |
1781 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); | |
1782 | bytes += 3 * 8; | |
1783 | ||
1784 | type_sig = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1785 | struct signatured_type); | |
1786 | type_sig->signature = signature; | |
1787 | type_sig->offset = offset; | |
1788 | type_sig->type_offset = type_offset; | |
1789 | type_sig->per_cu.from_debug_types = 1; | |
1790 | type_sig->per_cu.offset = offset; | |
1791 | type_sig->per_cu.objfile = objfile; | |
1792 | type_sig->per_cu.v.quick | |
1793 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1794 | struct dwarf2_per_cu_quick_data); | |
1795 | ||
673bfd45 | 1796 | slot = htab_find_slot (sig_types_hash, type_sig, INSERT); |
1fd400ff TT |
1797 | *slot = type_sig; |
1798 | ||
1799 | dwarf2_per_objfile->type_comp_units[i / 3] = &type_sig->per_cu; | |
1800 | } | |
1801 | ||
673bfd45 | 1802 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
1803 | |
1804 | return 1; | |
1805 | } | |
1806 | ||
9291a0cd TT |
1807 | /* Read the address map data from the mapped index, and use it to |
1808 | populate the objfile's psymtabs_addrmap. */ | |
1809 | static void | |
1810 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
1811 | { | |
1812 | const gdb_byte *iter, *end; | |
1813 | struct obstack temp_obstack; | |
1814 | struct addrmap *mutable_map; | |
1815 | struct cleanup *cleanup; | |
1816 | CORE_ADDR baseaddr; | |
1817 | ||
1818 | obstack_init (&temp_obstack); | |
1819 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
1820 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
1821 | ||
1822 | iter = index->address_table; | |
1823 | end = iter + index->address_table_size; | |
1824 | ||
1825 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
1826 | ||
1827 | while (iter < end) | |
1828 | { | |
1829 | ULONGEST hi, lo, cu_index; | |
1830 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
1831 | iter += 8; | |
1832 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
1833 | iter += 8; | |
1834 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
1835 | iter += 4; | |
1836 | ||
1837 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
1fd400ff | 1838 | dw2_get_cu (cu_index)); |
9291a0cd TT |
1839 | } |
1840 | ||
1841 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
1842 | &objfile->objfile_obstack); | |
1843 | do_cleanups (cleanup); | |
1844 | } | |
1845 | ||
1846 | /* The hash function for strings in the mapped index. This is the | |
1847 | same as the hashtab.c hash function, but we keep a separate copy to | |
1848 | maintain control over the implementation. This is necessary | |
1849 | because the hash function is tied to the format of the mapped index | |
1850 | file. */ | |
1851 | static hashval_t | |
1852 | mapped_index_string_hash (const void *p) | |
1853 | { | |
1854 | const unsigned char *str = (const unsigned char *) p; | |
1855 | hashval_t r = 0; | |
1856 | unsigned char c; | |
1857 | ||
1858 | while ((c = *str++) != 0) | |
1859 | r = r * 67 + c - 113; | |
1860 | ||
1861 | return r; | |
1862 | } | |
1863 | ||
1864 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
1865 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
1866 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
1867 | static int | |
1868 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
1869 | offset_type **vec_out) | |
1870 | { | |
1871 | offset_type hash = mapped_index_string_hash (name); | |
1872 | offset_type slot, step; | |
1873 | ||
1874 | slot = hash & (index->index_table_slots - 1); | |
1875 | step = ((hash * 17) & (index->index_table_slots - 1)) | 1; | |
1876 | ||
1877 | for (;;) | |
1878 | { | |
1879 | /* Convert a slot number to an offset into the table. */ | |
1880 | offset_type i = 2 * slot; | |
1881 | const char *str; | |
1882 | if (index->index_table[i] == 0 && index->index_table[i + 1] == 0) | |
1883 | return 0; | |
1884 | ||
1885 | str = index->constant_pool + MAYBE_SWAP (index->index_table[i]); | |
1886 | if (!strcmp (name, str)) | |
1887 | { | |
1888 | *vec_out = (offset_type *) (index->constant_pool | |
1889 | + MAYBE_SWAP (index->index_table[i + 1])); | |
1890 | return 1; | |
1891 | } | |
1892 | ||
1893 | slot = (slot + step) & (index->index_table_slots - 1); | |
1894 | } | |
1895 | } | |
1896 | ||
1897 | /* Read the index file. If everything went ok, initialize the "quick" | |
1898 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
1899 | static int | |
1900 | dwarf2_read_index (struct objfile *objfile) | |
1901 | { | |
9291a0cd TT |
1902 | char *addr; |
1903 | struct mapped_index *map; | |
b3b272e1 | 1904 | offset_type *metadata; |
ac0b195c KW |
1905 | const gdb_byte *cu_list; |
1906 | const gdb_byte *types_list = NULL; | |
1907 | offset_type version, cu_list_elements; | |
1908 | offset_type types_list_elements = 0; | |
1fd400ff | 1909 | int i; |
9291a0cd TT |
1910 | |
1911 | if (dwarf2_per_objfile->gdb_index.asection == NULL | |
1912 | || dwarf2_per_objfile->gdb_index.size == 0) | |
1913 | return 0; | |
82430852 JK |
1914 | |
1915 | /* Older elfutils strip versions could keep the section in the main | |
1916 | executable while splitting it for the separate debug info file. */ | |
1917 | if ((bfd_get_file_flags (dwarf2_per_objfile->gdb_index.asection) | |
1918 | & SEC_HAS_CONTENTS) == 0) | |
1919 | return 0; | |
1920 | ||
9291a0cd TT |
1921 | dwarf2_read_section (objfile, &dwarf2_per_objfile->gdb_index); |
1922 | ||
1923 | addr = dwarf2_per_objfile->gdb_index.buffer; | |
1924 | /* Version check. */ | |
1fd400ff | 1925 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c TT |
1926 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
1927 | causes the index to behave very poorly for certain requests. So, | |
1928 | it seems better to just ignore such indices. */ | |
1929 | if (version < 3) | |
9291a0cd TT |
1930 | return 0; |
1931 | ||
1932 | map = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct mapped_index); | |
b3b272e1 | 1933 | map->total_size = dwarf2_per_objfile->gdb_index.size; |
9291a0cd TT |
1934 | |
1935 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
1936 | |
1937 | i = 0; | |
1938 | cu_list = addr + MAYBE_SWAP (metadata[i]); | |
1939 | cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
9291a0cd | 1940 | / 8); |
1fd400ff TT |
1941 | ++i; |
1942 | ||
987d643c TT |
1943 | types_list = addr + MAYBE_SWAP (metadata[i]); |
1944 | types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
1945 | - MAYBE_SWAP (metadata[i])) | |
1946 | / 8); | |
1947 | ++i; | |
1fd400ff TT |
1948 | |
1949 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
1950 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
1951 | - MAYBE_SWAP (metadata[i])); | |
1952 | ++i; | |
1953 | ||
1954 | map->index_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); | |
1955 | map->index_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
1956 | - MAYBE_SWAP (metadata[i])) | |
9291a0cd | 1957 | / (2 * sizeof (offset_type))); |
1fd400ff | 1958 | ++i; |
9291a0cd | 1959 | |
1fd400ff TT |
1960 | map->constant_pool = addr + MAYBE_SWAP (metadata[i]); |
1961 | ||
1962 | if (!create_cus_from_index (objfile, cu_list, cu_list_elements)) | |
1963 | return 0; | |
1964 | ||
987d643c | 1965 | if (types_list_elements |
673bfd45 DE |
1966 | && !create_signatured_type_table_from_index (objfile, types_list, |
1967 | types_list_elements)) | |
9291a0cd TT |
1968 | return 0; |
1969 | ||
1970 | create_addrmap_from_index (objfile, map); | |
1971 | ||
1972 | dwarf2_per_objfile->index_table = map; | |
1973 | dwarf2_per_objfile->using_index = 1; | |
1974 | ||
1975 | return 1; | |
1976 | } | |
1977 | ||
1978 | /* A helper for the "quick" functions which sets the global | |
1979 | dwarf2_per_objfile according to OBJFILE. */ | |
1980 | static void | |
1981 | dw2_setup (struct objfile *objfile) | |
1982 | { | |
1983 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
1984 | gdb_assert (dwarf2_per_objfile); | |
1985 | } | |
1986 | ||
1987 | /* A helper for the "quick" functions which attempts to read the line | |
1988 | table for THIS_CU. */ | |
1989 | static void | |
1990 | dw2_require_line_header (struct objfile *objfile, | |
1991 | struct dwarf2_per_cu_data *this_cu) | |
1992 | { | |
1993 | bfd *abfd = objfile->obfd; | |
1994 | struct line_header *lh = NULL; | |
1995 | struct attribute *attr; | |
1996 | struct cleanup *cleanups; | |
1997 | struct die_info *comp_unit_die; | |
36374493 | 1998 | struct dwarf2_section_info* sec; |
9291a0cd TT |
1999 | gdb_byte *beg_of_comp_unit, *info_ptr, *buffer; |
2000 | int has_children, i; | |
2001 | struct dwarf2_cu cu; | |
2002 | unsigned int bytes_read, buffer_size; | |
2003 | struct die_reader_specs reader_specs; | |
2004 | char *name, *comp_dir; | |
2005 | ||
2006 | if (this_cu->v.quick->read_lines) | |
2007 | return; | |
2008 | this_cu->v.quick->read_lines = 1; | |
2009 | ||
2010 | memset (&cu, 0, sizeof (cu)); | |
2011 | cu.objfile = objfile; | |
2012 | obstack_init (&cu.comp_unit_obstack); | |
2013 | ||
2014 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
2015 | ||
36374493 DE |
2016 | if (this_cu->from_debug_types) |
2017 | sec = &dwarf2_per_objfile->types; | |
2018 | else | |
2019 | sec = &dwarf2_per_objfile->info; | |
2020 | dwarf2_read_section (objfile, sec); | |
2021 | buffer_size = sec->size; | |
2022 | buffer = sec->buffer; | |
9291a0cd TT |
2023 | info_ptr = buffer + this_cu->offset; |
2024 | beg_of_comp_unit = info_ptr; | |
2025 | ||
2026 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, | |
2027 | buffer, buffer_size, | |
2028 | abfd); | |
2029 | ||
2030 | /* Complete the cu_header. */ | |
2031 | cu.header.offset = beg_of_comp_unit - buffer; | |
2032 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; | |
2033 | ||
2034 | this_cu->cu = &cu; | |
2035 | cu.per_cu = this_cu; | |
2036 | ||
2037 | dwarf2_read_abbrevs (abfd, &cu); | |
2038 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
2039 | ||
2040 | if (this_cu->from_debug_types) | |
2041 | info_ptr += 8 /*signature*/ + cu.header.offset_size; | |
2042 | init_cu_die_reader (&reader_specs, &cu); | |
2043 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
2044 | &has_children); | |
2045 | ||
2046 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, &cu); | |
2047 | if (attr) | |
2048 | { | |
2049 | unsigned int line_offset = DW_UNSND (attr); | |
2050 | lh = dwarf_decode_line_header (line_offset, abfd, &cu); | |
2051 | } | |
2052 | if (lh == NULL) | |
2053 | { | |
2054 | do_cleanups (cleanups); | |
2055 | return; | |
2056 | } | |
2057 | ||
2058 | find_file_and_directory (comp_unit_die, &cu, &name, &comp_dir); | |
2059 | ||
2060 | this_cu->v.quick->lines = lh; | |
2061 | ||
2062 | this_cu->v.quick->file_names | |
2063 | = obstack_alloc (&objfile->objfile_obstack, | |
2064 | lh->num_file_names * sizeof (char *)); | |
2065 | for (i = 0; i < lh->num_file_names; ++i) | |
2066 | this_cu->v.quick->file_names[i] = file_full_name (i + 1, lh, comp_dir); | |
2067 | ||
2068 | do_cleanups (cleanups); | |
2069 | } | |
2070 | ||
2071 | /* A helper for the "quick" functions which computes and caches the | |
2072 | real path for a given file name from the line table. | |
2073 | dw2_require_line_header must have been called before this is | |
2074 | invoked. */ | |
2075 | static const char * | |
2076 | dw2_require_full_path (struct objfile *objfile, | |
e254ef6a | 2077 | struct dwarf2_per_cu_data *per_cu, |
9291a0cd TT |
2078 | int index) |
2079 | { | |
e254ef6a DE |
2080 | if (!per_cu->v.quick->full_names) |
2081 | per_cu->v.quick->full_names | |
9291a0cd | 2082 | = OBSTACK_CALLOC (&objfile->objfile_obstack, |
e254ef6a | 2083 | per_cu->v.quick->lines->num_file_names, |
9291a0cd TT |
2084 | sizeof (char *)); |
2085 | ||
e254ef6a DE |
2086 | if (!per_cu->v.quick->full_names[index]) |
2087 | per_cu->v.quick->full_names[index] | |
2088 | = gdb_realpath (per_cu->v.quick->file_names[index]); | |
9291a0cd | 2089 | |
e254ef6a | 2090 | return per_cu->v.quick->full_names[index]; |
9291a0cd TT |
2091 | } |
2092 | ||
2093 | static struct symtab * | |
2094 | dw2_find_last_source_symtab (struct objfile *objfile) | |
2095 | { | |
2096 | int index; | |
2097 | dw2_setup (objfile); | |
2098 | index = dwarf2_per_objfile->n_comp_units - 1; | |
1fd400ff | 2099 | return dw2_instantiate_symtab (objfile, dw2_get_cu (index)); |
9291a0cd TT |
2100 | } |
2101 | ||
2102 | static void | |
2103 | dw2_forget_cached_source_info (struct objfile *objfile) | |
2104 | { | |
2105 | int i; | |
2106 | ||
2107 | dw2_setup (objfile); | |
1fd400ff TT |
2108 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2109 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2110 | { |
e254ef6a | 2111 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2112 | |
e254ef6a | 2113 | if (per_cu->v.quick->full_names) |
9291a0cd TT |
2114 | { |
2115 | int j; | |
2116 | ||
e254ef6a DE |
2117 | for (j = 0; j < per_cu->v.quick->lines->num_file_names; ++j) |
2118 | xfree ((void *) per_cu->v.quick->full_names[j]); | |
9291a0cd TT |
2119 | } |
2120 | } | |
2121 | } | |
2122 | ||
2123 | static int | |
2124 | dw2_lookup_symtab (struct objfile *objfile, const char *name, | |
2125 | const char *full_path, const char *real_path, | |
2126 | struct symtab **result) | |
2127 | { | |
2128 | int i; | |
2129 | int check_basename = lbasename (name) == name; | |
2130 | struct dwarf2_per_cu_data *base_cu = NULL; | |
2131 | ||
2132 | dw2_setup (objfile); | |
1fd400ff TT |
2133 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2134 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2135 | { |
2136 | int j; | |
e254ef6a | 2137 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2138 | |
e254ef6a | 2139 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2140 | continue; |
2141 | ||
e254ef6a DE |
2142 | dw2_require_line_header (objfile, per_cu); |
2143 | if (!per_cu->v.quick->lines) | |
9291a0cd TT |
2144 | continue; |
2145 | ||
e254ef6a | 2146 | for (j = 0; j < per_cu->v.quick->lines->num_file_names; ++j) |
9291a0cd | 2147 | { |
e254ef6a | 2148 | const char *this_name = per_cu->v.quick->file_names[j]; |
9291a0cd TT |
2149 | |
2150 | if (FILENAME_CMP (name, this_name) == 0) | |
2151 | { | |
e254ef6a | 2152 | *result = dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2153 | return 1; |
2154 | } | |
2155 | ||
2156 | if (check_basename && ! base_cu | |
2157 | && FILENAME_CMP (lbasename (this_name), name) == 0) | |
e254ef6a | 2158 | base_cu = per_cu; |
9291a0cd TT |
2159 | |
2160 | if (full_path != NULL) | |
2161 | { | |
2162 | const char *this_full_name = dw2_require_full_path (objfile, | |
e254ef6a | 2163 | per_cu, j); |
9291a0cd TT |
2164 | |
2165 | if (this_full_name | |
2166 | && FILENAME_CMP (full_path, this_full_name) == 0) | |
2167 | { | |
e254ef6a | 2168 | *result = dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2169 | return 1; |
2170 | } | |
2171 | } | |
2172 | ||
2173 | if (real_path != NULL) | |
2174 | { | |
2175 | const char *this_full_name = dw2_require_full_path (objfile, | |
e254ef6a | 2176 | per_cu, j); |
9291a0cd TT |
2177 | |
2178 | if (this_full_name != NULL) | |
2179 | { | |
2180 | char *rp = gdb_realpath (this_full_name); | |
2181 | if (rp != NULL && FILENAME_CMP (real_path, rp) == 0) | |
2182 | { | |
2183 | xfree (rp); | |
e254ef6a | 2184 | *result = dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2185 | return 1; |
2186 | } | |
2187 | xfree (rp); | |
2188 | } | |
2189 | } | |
2190 | } | |
2191 | } | |
2192 | ||
2193 | if (base_cu) | |
2194 | { | |
2195 | *result = dw2_instantiate_symtab (objfile, base_cu); | |
2196 | return 1; | |
2197 | } | |
2198 | ||
2199 | return 0; | |
2200 | } | |
2201 | ||
2202 | static struct symtab * | |
2203 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
2204 | const char *name, domain_enum domain) | |
2205 | { | |
774b6a14 | 2206 | /* We do all the work in the pre_expand_symtabs_matching hook |
9291a0cd TT |
2207 | instead. */ |
2208 | return NULL; | |
2209 | } | |
2210 | ||
2211 | /* A helper function that expands all symtabs that hold an object | |
2212 | named NAME. */ | |
2213 | static void | |
2214 | dw2_do_expand_symtabs_matching (struct objfile *objfile, const char *name) | |
2215 | { | |
2216 | dw2_setup (objfile); | |
2217 | ||
2218 | if (dwarf2_per_objfile->index_table) | |
2219 | { | |
2220 | offset_type *vec; | |
2221 | ||
2222 | if (find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2223 | name, &vec)) | |
2224 | { | |
2225 | offset_type i, len = MAYBE_SWAP (*vec); | |
2226 | for (i = 0; i < len; ++i) | |
2227 | { | |
2228 | offset_type cu_index = MAYBE_SWAP (vec[i + 1]); | |
e254ef6a | 2229 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (cu_index); |
1fd400ff | 2230 | |
e254ef6a | 2231 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2232 | } |
2233 | } | |
2234 | } | |
2235 | } | |
2236 | ||
774b6a14 TT |
2237 | static void |
2238 | dw2_pre_expand_symtabs_matching (struct objfile *objfile, | |
2239 | int kind, const char *name, | |
2240 | domain_enum domain) | |
9291a0cd | 2241 | { |
774b6a14 | 2242 | dw2_do_expand_symtabs_matching (objfile, name); |
9291a0cd TT |
2243 | } |
2244 | ||
2245 | static void | |
2246 | dw2_print_stats (struct objfile *objfile) | |
2247 | { | |
2248 | int i, count; | |
2249 | ||
2250 | dw2_setup (objfile); | |
2251 | count = 0; | |
1fd400ff TT |
2252 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2253 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2254 | { |
e254ef6a | 2255 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2256 | |
e254ef6a | 2257 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
2258 | ++count; |
2259 | } | |
2260 | printf_filtered (_(" Number of unread CUs: %d\n"), count); | |
2261 | } | |
2262 | ||
2263 | static void | |
2264 | dw2_dump (struct objfile *objfile) | |
2265 | { | |
2266 | /* Nothing worth printing. */ | |
2267 | } | |
2268 | ||
2269 | static void | |
2270 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
2271 | struct section_offsets *delta) | |
2272 | { | |
2273 | /* There's nothing to relocate here. */ | |
2274 | } | |
2275 | ||
2276 | static void | |
2277 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
2278 | const char *func_name) | |
2279 | { | |
2280 | dw2_do_expand_symtabs_matching (objfile, func_name); | |
2281 | } | |
2282 | ||
2283 | static void | |
2284 | dw2_expand_all_symtabs (struct objfile *objfile) | |
2285 | { | |
2286 | int i; | |
2287 | ||
2288 | dw2_setup (objfile); | |
1fd400ff TT |
2289 | |
2290 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2291 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2292 | { |
e254ef6a | 2293 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2294 | |
e254ef6a | 2295 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2296 | } |
2297 | } | |
2298 | ||
2299 | static void | |
2300 | dw2_expand_symtabs_with_filename (struct objfile *objfile, | |
2301 | const char *filename) | |
2302 | { | |
2303 | int i; | |
2304 | ||
2305 | dw2_setup (objfile); | |
1fd400ff TT |
2306 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2307 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2308 | { |
2309 | int j; | |
e254ef6a | 2310 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2311 | |
e254ef6a | 2312 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2313 | continue; |
2314 | ||
e254ef6a DE |
2315 | dw2_require_line_header (objfile, per_cu); |
2316 | if (!per_cu->v.quick->lines) | |
9291a0cd TT |
2317 | continue; |
2318 | ||
e254ef6a | 2319 | for (j = 0; j < per_cu->v.quick->lines->num_file_names; ++j) |
9291a0cd | 2320 | { |
e254ef6a | 2321 | const char *this_name = per_cu->v.quick->file_names[j]; |
9291a0cd TT |
2322 | if (strcmp (this_name, filename) == 0) |
2323 | { | |
e254ef6a | 2324 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2325 | break; |
2326 | } | |
2327 | } | |
2328 | } | |
2329 | } | |
2330 | ||
dd786858 | 2331 | static const char * |
9291a0cd TT |
2332 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
2333 | { | |
e254ef6a | 2334 | struct dwarf2_per_cu_data *per_cu; |
9291a0cd TT |
2335 | offset_type *vec; |
2336 | ||
2337 | dw2_setup (objfile); | |
2338 | ||
2339 | if (!dwarf2_per_objfile->index_table) | |
2340 | return NULL; | |
2341 | ||
2342 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2343 | name, &vec)) | |
2344 | return NULL; | |
2345 | ||
2346 | /* Note that this just looks at the very first one named NAME -- but | |
2347 | actually we are looking for a function. find_main_filename | |
2348 | should be rewritten so that it doesn't require a custom hook. It | |
2349 | could just use the ordinary symbol tables. */ | |
2350 | /* vec[0] is the length, which must always be >0. */ | |
e254ef6a | 2351 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[1])); |
9291a0cd | 2352 | |
e254ef6a DE |
2353 | dw2_require_line_header (objfile, per_cu); |
2354 | if (!per_cu->v.quick->lines) | |
9291a0cd TT |
2355 | return NULL; |
2356 | ||
e254ef6a | 2357 | return per_cu->v.quick->file_names[per_cu->v.quick->lines->num_file_names - 1]; |
9291a0cd TT |
2358 | } |
2359 | ||
2360 | static void | |
2361 | dw2_map_ada_symtabs (struct objfile *objfile, | |
2362 | int (*wild_match) (const char *, int, const char *), | |
2363 | int (*is_name_suffix) (const char *), | |
2364 | void (*callback) (struct objfile *, | |
2365 | struct symtab *, void *), | |
2366 | const char *name, int global, | |
2367 | domain_enum namespace, int wild, | |
2368 | void *data) | |
2369 | { | |
a9e6a4bb JK |
2370 | /* For now, we don't support Ada. Still the function can be called if the |
2371 | current language is Ada for a non-Ada objfile using GNU index. As Ada | |
2372 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
2373 | } |
2374 | ||
2375 | static void | |
2376 | dw2_expand_symtabs_matching (struct objfile *objfile, | |
2377 | int (*file_matcher) (const char *, void *), | |
2378 | int (*name_matcher) (const char *, void *), | |
2379 | domain_enum kind, | |
2380 | void *data) | |
2381 | { | |
2382 | int i; | |
2383 | offset_type iter; | |
4b5246aa | 2384 | struct mapped_index *index; |
9291a0cd TT |
2385 | |
2386 | dw2_setup (objfile); | |
2387 | if (!dwarf2_per_objfile->index_table) | |
2388 | return; | |
4b5246aa | 2389 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 2390 | |
1fd400ff TT |
2391 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2392 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2393 | { |
2394 | int j; | |
e254ef6a | 2395 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2396 | |
e254ef6a DE |
2397 | per_cu->v.quick->mark = 0; |
2398 | if (per_cu->v.quick->symtab) | |
9291a0cd TT |
2399 | continue; |
2400 | ||
e254ef6a DE |
2401 | dw2_require_line_header (objfile, per_cu); |
2402 | if (!per_cu->v.quick->lines) | |
9291a0cd TT |
2403 | continue; |
2404 | ||
e254ef6a | 2405 | for (j = 0; j < per_cu->v.quick->lines->num_file_names; ++j) |
9291a0cd | 2406 | { |
e254ef6a | 2407 | if (file_matcher (per_cu->v.quick->file_names[j], data)) |
9291a0cd | 2408 | { |
e254ef6a | 2409 | per_cu->v.quick->mark = 1; |
9291a0cd TT |
2410 | break; |
2411 | } | |
2412 | } | |
2413 | } | |
2414 | ||
4b5246aa | 2415 | for (iter = 0; iter < index->index_table_slots; ++iter) |
9291a0cd TT |
2416 | { |
2417 | offset_type idx = 2 * iter; | |
2418 | const char *name; | |
2419 | offset_type *vec, vec_len, vec_idx; | |
2420 | ||
4b5246aa | 2421 | if (index->index_table[idx] == 0 && index->index_table[idx + 1] == 0) |
9291a0cd TT |
2422 | continue; |
2423 | ||
4b5246aa | 2424 | name = index->constant_pool + MAYBE_SWAP (index->index_table[idx]); |
9291a0cd TT |
2425 | |
2426 | if (! (*name_matcher) (name, data)) | |
2427 | continue; | |
2428 | ||
2429 | /* The name was matched, now expand corresponding CUs that were | |
2430 | marked. */ | |
4b5246aa TT |
2431 | vec = (offset_type *) (index->constant_pool |
2432 | + MAYBE_SWAP (index->index_table[idx + 1])); | |
9291a0cd TT |
2433 | vec_len = MAYBE_SWAP (vec[0]); |
2434 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
2435 | { | |
e254ef6a | 2436 | struct dwarf2_per_cu_data *per_cu; |
1fd400ff | 2437 | |
e254ef6a DE |
2438 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[vec_idx + 1])); |
2439 | if (per_cu->v.quick->mark) | |
2440 | dw2_instantiate_symtab (objfile, per_cu); | |
9291a0cd TT |
2441 | } |
2442 | } | |
2443 | } | |
2444 | ||
2445 | static struct symtab * | |
2446 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
2447 | struct minimal_symbol *msymbol, | |
2448 | CORE_ADDR pc, | |
2449 | struct obj_section *section, | |
2450 | int warn_if_readin) | |
2451 | { | |
2452 | struct dwarf2_per_cu_data *data; | |
2453 | ||
2454 | dw2_setup (objfile); | |
2455 | ||
2456 | if (!objfile->psymtabs_addrmap) | |
2457 | return NULL; | |
2458 | ||
2459 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
2460 | if (!data) | |
2461 | return NULL; | |
2462 | ||
2463 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 2464 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
2465 | paddress (get_objfile_arch (objfile), pc)); |
2466 | ||
2467 | return dw2_instantiate_symtab (objfile, data); | |
2468 | } | |
2469 | ||
2470 | static void | |
2471 | dw2_map_symbol_names (struct objfile *objfile, | |
2472 | void (*fun) (const char *, void *), | |
2473 | void *data) | |
2474 | { | |
2475 | offset_type iter; | |
4b5246aa TT |
2476 | struct mapped_index *index; |
2477 | ||
9291a0cd TT |
2478 | dw2_setup (objfile); |
2479 | ||
2480 | if (!dwarf2_per_objfile->index_table) | |
2481 | return; | |
4b5246aa | 2482 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 2483 | |
4b5246aa | 2484 | for (iter = 0; iter < index->index_table_slots; ++iter) |
9291a0cd TT |
2485 | { |
2486 | offset_type idx = 2 * iter; | |
2487 | const char *name; | |
2488 | offset_type *vec, vec_len, vec_idx; | |
2489 | ||
4b5246aa | 2490 | if (index->index_table[idx] == 0 && index->index_table[idx + 1] == 0) |
9291a0cd TT |
2491 | continue; |
2492 | ||
4b5246aa | 2493 | name = (index->constant_pool + MAYBE_SWAP (index->index_table[idx])); |
9291a0cd TT |
2494 | |
2495 | (*fun) (name, data); | |
2496 | } | |
2497 | } | |
2498 | ||
2499 | static void | |
2500 | dw2_map_symbol_filenames (struct objfile *objfile, | |
2501 | void (*fun) (const char *, const char *, void *), | |
2502 | void *data) | |
2503 | { | |
2504 | int i; | |
2505 | ||
2506 | dw2_setup (objfile); | |
1fd400ff TT |
2507 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2508 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2509 | { |
2510 | int j; | |
e254ef6a | 2511 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2512 | |
e254ef6a | 2513 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2514 | continue; |
2515 | ||
e254ef6a DE |
2516 | dw2_require_line_header (objfile, per_cu); |
2517 | if (!per_cu->v.quick->lines) | |
9291a0cd TT |
2518 | continue; |
2519 | ||
e254ef6a | 2520 | for (j = 0; j < per_cu->v.quick->lines->num_file_names; ++j) |
9291a0cd | 2521 | { |
e254ef6a DE |
2522 | const char *this_full_name = dw2_require_full_path (objfile, per_cu, |
2523 | j); | |
2524 | (*fun) (per_cu->v.quick->file_names[j], this_full_name, data); | |
9291a0cd TT |
2525 | } |
2526 | } | |
2527 | } | |
2528 | ||
2529 | static int | |
2530 | dw2_has_symbols (struct objfile *objfile) | |
2531 | { | |
2532 | return 1; | |
2533 | } | |
2534 | ||
2535 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
2536 | { | |
2537 | dw2_has_symbols, | |
2538 | dw2_find_last_source_symtab, | |
2539 | dw2_forget_cached_source_info, | |
2540 | dw2_lookup_symtab, | |
2541 | dw2_lookup_symbol, | |
774b6a14 | 2542 | dw2_pre_expand_symtabs_matching, |
9291a0cd TT |
2543 | dw2_print_stats, |
2544 | dw2_dump, | |
2545 | dw2_relocate, | |
2546 | dw2_expand_symtabs_for_function, | |
2547 | dw2_expand_all_symtabs, | |
2548 | dw2_expand_symtabs_with_filename, | |
2549 | dw2_find_symbol_file, | |
2550 | dw2_map_ada_symtabs, | |
2551 | dw2_expand_symtabs_matching, | |
2552 | dw2_find_pc_sect_symtab, | |
2553 | dw2_map_symbol_names, | |
2554 | dw2_map_symbol_filenames | |
2555 | }; | |
2556 | ||
2557 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
2558 | file will use psymtabs, or 1 if using the GNU index. */ | |
2559 | ||
2560 | int | |
2561 | dwarf2_initialize_objfile (struct objfile *objfile) | |
2562 | { | |
2563 | /* If we're about to read full symbols, don't bother with the | |
2564 | indices. In this case we also don't care if some other debug | |
2565 | format is making psymtabs, because they are all about to be | |
2566 | expanded anyway. */ | |
2567 | if ((objfile->flags & OBJF_READNOW)) | |
2568 | { | |
2569 | int i; | |
2570 | ||
2571 | dwarf2_per_objfile->using_index = 1; | |
2572 | create_all_comp_units (objfile); | |
1fd400ff | 2573 | create_debug_types_hash_table (objfile); |
9291a0cd | 2574 | |
1fd400ff TT |
2575 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2576 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2577 | { |
e254ef6a | 2578 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2579 | |
e254ef6a DE |
2580 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2581 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
2582 | } |
2583 | ||
2584 | /* Return 1 so that gdb sees the "quick" functions. However, | |
2585 | these functions will be no-ops because we will have expanded | |
2586 | all symtabs. */ | |
2587 | return 1; | |
2588 | } | |
2589 | ||
2590 | if (dwarf2_read_index (objfile)) | |
2591 | return 1; | |
2592 | ||
2593 | dwarf2_build_psymtabs (objfile); | |
2594 | return 0; | |
2595 | } | |
2596 | ||
2597 | \f | |
2598 | ||
dce234bc PP |
2599 | /* Build a partial symbol table. */ |
2600 | ||
2601 | void | |
f29dff0a | 2602 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 2603 | { |
f29dff0a | 2604 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
2605 | { |
2606 | init_psymbol_list (objfile, 1024); | |
2607 | } | |
2608 | ||
d146bf1e | 2609 | dwarf2_build_psymtabs_hard (objfile); |
c906108c | 2610 | } |
c906108c | 2611 | |
45452591 DE |
2612 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
2613 | ||
2614 | static inline int | |
2615 | offset_in_cu_p (const struct comp_unit_head *cu_header, unsigned int offset) | |
2616 | { | |
2617 | unsigned int bottom = cu_header->offset; | |
2618 | unsigned int top = (cu_header->offset | |
2619 | + cu_header->length | |
2620 | + cu_header->initial_length_size); | |
9a619af0 | 2621 | |
45452591 DE |
2622 | return (offset >= bottom && offset < top); |
2623 | } | |
2624 | ||
93311388 DE |
2625 | /* Read in the comp unit header information from the debug_info at info_ptr. |
2626 | NOTE: This leaves members offset, first_die_offset to be filled in | |
2627 | by the caller. */ | |
107d2387 | 2628 | |
fe1b8b76 | 2629 | static gdb_byte * |
107d2387 | 2630 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 2631 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
2632 | { |
2633 | int signed_addr; | |
891d2f0b | 2634 | unsigned int bytes_read; |
c764a876 DE |
2635 | |
2636 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
2637 | cu_header->initial_length_size = bytes_read; | |
2638 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 2639 | info_ptr += bytes_read; |
107d2387 AC |
2640 | cu_header->version = read_2_bytes (abfd, info_ptr); |
2641 | info_ptr += 2; | |
613e1657 | 2642 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
c764a876 | 2643 | &bytes_read); |
613e1657 | 2644 | info_ptr += bytes_read; |
107d2387 AC |
2645 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
2646 | info_ptr += 1; | |
2647 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
2648 | if (signed_addr < 0) | |
8e65ff28 | 2649 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2650 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 2651 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 2652 | |
107d2387 AC |
2653 | return info_ptr; |
2654 | } | |
2655 | ||
fe1b8b76 JB |
2656 | static gdb_byte * |
2657 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
93311388 | 2658 | gdb_byte *buffer, unsigned int buffer_size, |
72bf9492 DJ |
2659 | bfd *abfd) |
2660 | { | |
fe1b8b76 | 2661 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
2662 | |
2663 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
2664 | ||
2dc7f7b3 | 2665 | if (header->version != 2 && header->version != 3 && header->version != 4) |
8a3fe4f8 | 2666 | error (_("Dwarf Error: wrong version in compilation unit header " |
2dc7f7b3 TT |
2667 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, |
2668 | bfd_get_filename (abfd)); | |
72bf9492 | 2669 | |
dce234bc | 2670 | if (header->abbrev_offset >= dwarf2_per_objfile->abbrev.size) |
8a3fe4f8 AC |
2671 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
2672 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 | 2673 | (long) header->abbrev_offset, |
93311388 | 2674 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
2675 | bfd_get_filename (abfd)); |
2676 | ||
2677 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
93311388 | 2678 | > buffer + buffer_size) |
8a3fe4f8 AC |
2679 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
2680 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 | 2681 | (long) header->length, |
93311388 | 2682 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
2683 | bfd_get_filename (abfd)); |
2684 | ||
2685 | return info_ptr; | |
2686 | } | |
2687 | ||
348e048f DE |
2688 | /* Read in the types comp unit header information from .debug_types entry at |
2689 | types_ptr. The result is a pointer to one past the end of the header. */ | |
2690 | ||
2691 | static gdb_byte * | |
2692 | read_type_comp_unit_head (struct comp_unit_head *cu_header, | |
2693 | ULONGEST *signature, | |
2694 | gdb_byte *types_ptr, bfd *abfd) | |
2695 | { | |
348e048f DE |
2696 | gdb_byte *initial_types_ptr = types_ptr; |
2697 | ||
6e70227d | 2698 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
fa238c03 | 2699 | &dwarf2_per_objfile->types); |
348e048f DE |
2700 | cu_header->offset = types_ptr - dwarf2_per_objfile->types.buffer; |
2701 | ||
2702 | types_ptr = read_comp_unit_head (cu_header, types_ptr, abfd); | |
2703 | ||
2704 | *signature = read_8_bytes (abfd, types_ptr); | |
2705 | types_ptr += 8; | |
2706 | types_ptr += cu_header->offset_size; | |
2707 | cu_header->first_die_offset = types_ptr - initial_types_ptr; | |
2708 | ||
2709 | return types_ptr; | |
2710 | } | |
2711 | ||
aaa75496 JB |
2712 | /* Allocate a new partial symtab for file named NAME and mark this new |
2713 | partial symtab as being an include of PST. */ | |
2714 | ||
2715 | static void | |
2716 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
2717 | struct objfile *objfile) | |
2718 | { | |
2719 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
2720 | ||
2721 | subpst->section_offsets = pst->section_offsets; | |
2722 | subpst->textlow = 0; | |
2723 | subpst->texthigh = 0; | |
2724 | ||
2725 | subpst->dependencies = (struct partial_symtab **) | |
2726 | obstack_alloc (&objfile->objfile_obstack, | |
2727 | sizeof (struct partial_symtab *)); | |
2728 | subpst->dependencies[0] = pst; | |
2729 | subpst->number_of_dependencies = 1; | |
2730 | ||
2731 | subpst->globals_offset = 0; | |
2732 | subpst->n_global_syms = 0; | |
2733 | subpst->statics_offset = 0; | |
2734 | subpst->n_static_syms = 0; | |
2735 | subpst->symtab = NULL; | |
2736 | subpst->read_symtab = pst->read_symtab; | |
2737 | subpst->readin = 0; | |
2738 | ||
2739 | /* No private part is necessary for include psymtabs. This property | |
2740 | can be used to differentiate between such include psymtabs and | |
10b3939b | 2741 | the regular ones. */ |
58a9656e | 2742 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
2743 | } |
2744 | ||
2745 | /* Read the Line Number Program data and extract the list of files | |
2746 | included by the source file represented by PST. Build an include | |
d85a05f0 | 2747 | partial symtab for each of these included files. */ |
aaa75496 JB |
2748 | |
2749 | static void | |
2750 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
d85a05f0 | 2751 | struct die_info *die, |
aaa75496 JB |
2752 | struct partial_symtab *pst) |
2753 | { | |
2754 | struct objfile *objfile = cu->objfile; | |
2755 | bfd *abfd = objfile->obfd; | |
d85a05f0 DJ |
2756 | struct line_header *lh = NULL; |
2757 | struct attribute *attr; | |
aaa75496 | 2758 | |
d85a05f0 DJ |
2759 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
2760 | if (attr) | |
2761 | { | |
2762 | unsigned int line_offset = DW_UNSND (attr); | |
9a619af0 | 2763 | |
d85a05f0 DJ |
2764 | lh = dwarf_decode_line_header (line_offset, abfd, cu); |
2765 | } | |
aaa75496 JB |
2766 | if (lh == NULL) |
2767 | return; /* No linetable, so no includes. */ | |
2768 | ||
c6da4cef DE |
2769 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
2770 | dwarf_decode_lines (lh, pst->dirname, abfd, cu, pst); | |
aaa75496 JB |
2771 | |
2772 | free_line_header (lh); | |
2773 | } | |
2774 | ||
348e048f DE |
2775 | static hashval_t |
2776 | hash_type_signature (const void *item) | |
2777 | { | |
2778 | const struct signatured_type *type_sig = item; | |
9a619af0 | 2779 | |
348e048f DE |
2780 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
2781 | return type_sig->signature; | |
2782 | } | |
2783 | ||
2784 | static int | |
2785 | eq_type_signature (const void *item_lhs, const void *item_rhs) | |
2786 | { | |
2787 | const struct signatured_type *lhs = item_lhs; | |
2788 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 2789 | |
348e048f DE |
2790 | return lhs->signature == rhs->signature; |
2791 | } | |
2792 | ||
1fd400ff TT |
2793 | /* Allocate a hash table for signatured types. */ |
2794 | ||
2795 | static htab_t | |
673bfd45 | 2796 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
2797 | { |
2798 | return htab_create_alloc_ex (41, | |
2799 | hash_type_signature, | |
2800 | eq_type_signature, | |
2801 | NULL, | |
2802 | &objfile->objfile_obstack, | |
2803 | hashtab_obstack_allocate, | |
2804 | dummy_obstack_deallocate); | |
2805 | } | |
2806 | ||
2807 | /* A helper function to add a signatured type CU to a list. */ | |
2808 | ||
2809 | static int | |
2810 | add_signatured_type_cu_to_list (void **slot, void *datum) | |
2811 | { | |
2812 | struct signatured_type *sigt = *slot; | |
2813 | struct dwarf2_per_cu_data ***datap = datum; | |
2814 | ||
2815 | **datap = &sigt->per_cu; | |
2816 | ++*datap; | |
2817 | ||
2818 | return 1; | |
2819 | } | |
2820 | ||
348e048f DE |
2821 | /* Create the hash table of all entries in the .debug_types section. |
2822 | The result is zero if there is an error (e.g. missing .debug_types section), | |
2823 | otherwise non-zero. */ | |
2824 | ||
2825 | static int | |
2826 | create_debug_types_hash_table (struct objfile *objfile) | |
2827 | { | |
be391dca | 2828 | gdb_byte *info_ptr; |
348e048f | 2829 | htab_t types_htab; |
1fd400ff | 2830 | struct dwarf2_per_cu_data **iter; |
348e048f | 2831 | |
be391dca TT |
2832 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
2833 | info_ptr = dwarf2_per_objfile->types.buffer; | |
2834 | ||
348e048f DE |
2835 | if (info_ptr == NULL) |
2836 | { | |
2837 | dwarf2_per_objfile->signatured_types = NULL; | |
2838 | return 0; | |
2839 | } | |
2840 | ||
673bfd45 | 2841 | types_htab = allocate_signatured_type_table (objfile); |
348e048f DE |
2842 | |
2843 | if (dwarf2_die_debug) | |
2844 | fprintf_unfiltered (gdb_stdlog, "Signatured types:\n"); | |
2845 | ||
2846 | while (info_ptr < dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size) | |
2847 | { | |
2848 | unsigned int offset; | |
2849 | unsigned int offset_size; | |
2850 | unsigned int type_offset; | |
2851 | unsigned int length, initial_length_size; | |
2852 | unsigned short version; | |
2853 | ULONGEST signature; | |
2854 | struct signatured_type *type_sig; | |
2855 | void **slot; | |
2856 | gdb_byte *ptr = info_ptr; | |
2857 | ||
2858 | offset = ptr - dwarf2_per_objfile->types.buffer; | |
2859 | ||
2860 | /* We need to read the type's signature in order to build the hash | |
2861 | table, but we don't need to read anything else just yet. */ | |
2862 | ||
2863 | /* Sanity check to ensure entire cu is present. */ | |
2864 | length = read_initial_length (objfile->obfd, ptr, &initial_length_size); | |
2865 | if (ptr + length + initial_length_size | |
2866 | > dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size) | |
2867 | { | |
2868 | complaint (&symfile_complaints, | |
2869 | _("debug type entry runs off end of `.debug_types' section, ignored")); | |
2870 | break; | |
2871 | } | |
2872 | ||
2873 | offset_size = initial_length_size == 4 ? 4 : 8; | |
2874 | ptr += initial_length_size; | |
2875 | version = bfd_get_16 (objfile->obfd, ptr); | |
2876 | ptr += 2; | |
2877 | ptr += offset_size; /* abbrev offset */ | |
2878 | ptr += 1; /* address size */ | |
2879 | signature = bfd_get_64 (objfile->obfd, ptr); | |
2880 | ptr += 8; | |
2881 | type_offset = read_offset_1 (objfile->obfd, ptr, offset_size); | |
2882 | ||
2883 | type_sig = obstack_alloc (&objfile->objfile_obstack, sizeof (*type_sig)); | |
2884 | memset (type_sig, 0, sizeof (*type_sig)); | |
2885 | type_sig->signature = signature; | |
2886 | type_sig->offset = offset; | |
2887 | type_sig->type_offset = type_offset; | |
ca1f3406 | 2888 | type_sig->per_cu.objfile = objfile; |
1fd400ff | 2889 | type_sig->per_cu.from_debug_types = 1; |
348e048f DE |
2890 | |
2891 | slot = htab_find_slot (types_htab, type_sig, INSERT); | |
2892 | gdb_assert (slot != NULL); | |
2893 | *slot = type_sig; | |
2894 | ||
2895 | if (dwarf2_die_debug) | |
2896 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", | |
2897 | offset, phex (signature, sizeof (signature))); | |
2898 | ||
2899 | info_ptr = info_ptr + initial_length_size + length; | |
2900 | } | |
2901 | ||
2902 | dwarf2_per_objfile->signatured_types = types_htab; | |
2903 | ||
1fd400ff TT |
2904 | dwarf2_per_objfile->n_type_comp_units = htab_elements (types_htab); |
2905 | dwarf2_per_objfile->type_comp_units | |
2906 | = obstack_alloc (&objfile->objfile_obstack, | |
2907 | dwarf2_per_objfile->n_type_comp_units | |
2908 | * sizeof (struct dwarf2_per_cu_data *)); | |
2909 | iter = &dwarf2_per_objfile->type_comp_units[0]; | |
2910 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_list, &iter); | |
2911 | gdb_assert (iter - &dwarf2_per_objfile->type_comp_units[0] | |
2912 | == dwarf2_per_objfile->n_type_comp_units); | |
2913 | ||
348e048f DE |
2914 | return 1; |
2915 | } | |
2916 | ||
2917 | /* Lookup a signature based type. | |
2918 | Returns NULL if SIG is not present in the table. */ | |
2919 | ||
2920 | static struct signatured_type * | |
2921 | lookup_signatured_type (struct objfile *objfile, ULONGEST sig) | |
2922 | { | |
2923 | struct signatured_type find_entry, *entry; | |
2924 | ||
2925 | if (dwarf2_per_objfile->signatured_types == NULL) | |
2926 | { | |
2927 | complaint (&symfile_complaints, | |
2928 | _("missing `.debug_types' section for DW_FORM_sig8 die")); | |
2929 | return 0; | |
2930 | } | |
2931 | ||
2932 | find_entry.signature = sig; | |
2933 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
2934 | return entry; | |
2935 | } | |
2936 | ||
d85a05f0 DJ |
2937 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
2938 | ||
2939 | static void | |
2940 | init_cu_die_reader (struct die_reader_specs *reader, | |
2941 | struct dwarf2_cu *cu) | |
2942 | { | |
2943 | reader->abfd = cu->objfile->obfd; | |
2944 | reader->cu = cu; | |
2945 | if (cu->per_cu->from_debug_types) | |
be391dca TT |
2946 | { |
2947 | gdb_assert (dwarf2_per_objfile->types.readin); | |
2948 | reader->buffer = dwarf2_per_objfile->types.buffer; | |
2949 | } | |
d85a05f0 | 2950 | else |
be391dca TT |
2951 | { |
2952 | gdb_assert (dwarf2_per_objfile->info.readin); | |
2953 | reader->buffer = dwarf2_per_objfile->info.buffer; | |
2954 | } | |
d85a05f0 DJ |
2955 | } |
2956 | ||
2957 | /* Find the base address of the compilation unit for range lists and | |
2958 | location lists. It will normally be specified by DW_AT_low_pc. | |
2959 | In DWARF-3 draft 4, the base address could be overridden by | |
2960 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
2961 | compilation units with discontinuous ranges. */ | |
2962 | ||
2963 | static void | |
2964 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
2965 | { | |
2966 | struct attribute *attr; | |
2967 | ||
2968 | cu->base_known = 0; | |
2969 | cu->base_address = 0; | |
2970 | ||
2971 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
2972 | if (attr) | |
2973 | { | |
2974 | cu->base_address = DW_ADDR (attr); | |
2975 | cu->base_known = 1; | |
2976 | } | |
2977 | else | |
2978 | { | |
2979 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
2980 | if (attr) | |
2981 | { | |
2982 | cu->base_address = DW_ADDR (attr); | |
2983 | cu->base_known = 1; | |
2984 | } | |
2985 | } | |
2986 | } | |
2987 | ||
348e048f DE |
2988 | /* Subroutine of process_type_comp_unit and dwarf2_build_psymtabs_hard |
2989 | to combine the common parts. | |
93311388 | 2990 | Process a compilation unit for a psymtab. |
348e048f DE |
2991 | BUFFER is a pointer to the beginning of the dwarf section buffer, |
2992 | either .debug_info or debug_types. | |
93311388 DE |
2993 | INFO_PTR is a pointer to the start of the CU. |
2994 | Returns a pointer to the next CU. */ | |
aaa75496 | 2995 | |
93311388 DE |
2996 | static gdb_byte * |
2997 | process_psymtab_comp_unit (struct objfile *objfile, | |
2998 | struct dwarf2_per_cu_data *this_cu, | |
2999 | gdb_byte *buffer, gdb_byte *info_ptr, | |
3000 | unsigned int buffer_size) | |
c906108c | 3001 | { |
c906108c | 3002 | bfd *abfd = objfile->obfd; |
93311388 | 3003 | gdb_byte *beg_of_comp_unit = info_ptr; |
d85a05f0 | 3004 | struct die_info *comp_unit_die; |
c906108c | 3005 | struct partial_symtab *pst; |
5734ee8b | 3006 | CORE_ADDR baseaddr; |
93311388 DE |
3007 | struct cleanup *back_to_inner; |
3008 | struct dwarf2_cu cu; | |
d85a05f0 DJ |
3009 | int has_children, has_pc_info; |
3010 | struct attribute *attr; | |
d85a05f0 DJ |
3011 | CORE_ADDR best_lowpc = 0, best_highpc = 0; |
3012 | struct die_reader_specs reader_specs; | |
c906108c | 3013 | |
93311388 DE |
3014 | memset (&cu, 0, sizeof (cu)); |
3015 | cu.objfile = objfile; | |
3016 | obstack_init (&cu.comp_unit_obstack); | |
c906108c | 3017 | |
93311388 | 3018 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); |
ae038cb0 | 3019 | |
93311388 DE |
3020 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, |
3021 | buffer, buffer_size, | |
3022 | abfd); | |
10b3939b | 3023 | |
93311388 DE |
3024 | /* Complete the cu_header. */ |
3025 | cu.header.offset = beg_of_comp_unit - buffer; | |
3026 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; | |
ff013f42 | 3027 | |
93311388 | 3028 | cu.list_in_scope = &file_symbols; |
af703f96 | 3029 | |
328c9494 DJ |
3030 | /* If this compilation unit was already read in, free the |
3031 | cached copy in order to read it in again. This is | |
3032 | necessary because we skipped some symbols when we first | |
3033 | read in the compilation unit (see load_partial_dies). | |
3034 | This problem could be avoided, but the benefit is | |
3035 | unclear. */ | |
3036 | if (this_cu->cu != NULL) | |
3037 | free_one_cached_comp_unit (this_cu->cu); | |
3038 | ||
3039 | /* Note that this is a pointer to our stack frame, being | |
3040 | added to a global data structure. It will be cleaned up | |
3041 | in free_stack_comp_unit when we finish with this | |
3042 | compilation unit. */ | |
3043 | this_cu->cu = &cu; | |
d85a05f0 DJ |
3044 | cu.per_cu = this_cu; |
3045 | ||
93311388 DE |
3046 | /* Read the abbrevs for this compilation unit into a table. */ |
3047 | dwarf2_read_abbrevs (abfd, &cu); | |
3048 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
af703f96 | 3049 | |
93311388 | 3050 | /* Read the compilation unit die. */ |
348e048f DE |
3051 | if (this_cu->from_debug_types) |
3052 | info_ptr += 8 /*signature*/ + cu.header.offset_size; | |
d85a05f0 DJ |
3053 | init_cu_die_reader (&reader_specs, &cu); |
3054 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
3055 | &has_children); | |
93311388 | 3056 | |
348e048f DE |
3057 | if (this_cu->from_debug_types) |
3058 | { | |
3059 | /* offset,length haven't been set yet for type units. */ | |
3060 | this_cu->offset = cu.header.offset; | |
3061 | this_cu->length = cu.header.length + cu.header.initial_length_size; | |
3062 | } | |
d85a05f0 | 3063 | else if (comp_unit_die->tag == DW_TAG_partial_unit) |
c906108c | 3064 | { |
93311388 DE |
3065 | info_ptr = (beg_of_comp_unit + cu.header.length |
3066 | + cu.header.initial_length_size); | |
3067 | do_cleanups (back_to_inner); | |
3068 | return info_ptr; | |
3069 | } | |
72bf9492 | 3070 | |
93311388 | 3071 | /* Set the language we're debugging. */ |
d85a05f0 DJ |
3072 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, &cu); |
3073 | if (attr) | |
3074 | set_cu_language (DW_UNSND (attr), &cu); | |
3075 | else | |
3076 | set_cu_language (language_minimal, &cu); | |
c906108c | 3077 | |
93311388 | 3078 | /* Allocate a new partial symbol table structure. */ |
d85a05f0 | 3079 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, &cu); |
93311388 | 3080 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
d85a05f0 | 3081 | (attr != NULL) ? DW_STRING (attr) : "", |
93311388 DE |
3082 | /* TEXTLOW and TEXTHIGH are set below. */ |
3083 | 0, | |
3084 | objfile->global_psymbols.next, | |
3085 | objfile->static_psymbols.next); | |
72bf9492 | 3086 | |
d85a05f0 DJ |
3087 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, &cu); |
3088 | if (attr != NULL) | |
3089 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 3090 | |
e38df1d0 | 3091 | pst->read_symtab_private = this_cu; |
72bf9492 | 3092 | |
93311388 | 3093 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 3094 | |
93311388 DE |
3095 | /* Store the function that reads in the rest of the symbol table */ |
3096 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
57349743 | 3097 | |
9291a0cd | 3098 | this_cu->v.psymtab = pst; |
c906108c | 3099 | |
d85a05f0 DJ |
3100 | dwarf2_find_base_address (comp_unit_die, &cu); |
3101 | ||
93311388 DE |
3102 | /* Possibly set the default values of LOWPC and HIGHPC from |
3103 | `DW_AT_ranges'. */ | |
d85a05f0 DJ |
3104 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
3105 | &best_highpc, &cu, pst); | |
3106 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
93311388 DE |
3107 | /* Store the contiguous range if it is not empty; it can be empty for |
3108 | CUs with no code. */ | |
3109 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
3110 | best_lowpc + baseaddr, |
3111 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
3112 | |
3113 | /* Check if comp unit has_children. | |
3114 | If so, read the rest of the partial symbols from this comp unit. | |
3115 | If not, there's no more debug_info for this comp unit. */ | |
d85a05f0 | 3116 | if (has_children) |
93311388 DE |
3117 | { |
3118 | struct partial_die_info *first_die; | |
3119 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 3120 | |
93311388 DE |
3121 | lowpc = ((CORE_ADDR) -1); |
3122 | highpc = ((CORE_ADDR) 0); | |
c906108c | 3123 | |
93311388 | 3124 | first_die = load_partial_dies (abfd, buffer, info_ptr, 1, &cu); |
c906108c | 3125 | |
93311388 | 3126 | scan_partial_symbols (first_die, &lowpc, &highpc, |
d85a05f0 | 3127 | ! has_pc_info, &cu); |
57c22c6c | 3128 | |
93311388 DE |
3129 | /* If we didn't find a lowpc, set it to highpc to avoid |
3130 | complaints from `maint check'. */ | |
3131 | if (lowpc == ((CORE_ADDR) -1)) | |
3132 | lowpc = highpc; | |
10b3939b | 3133 | |
93311388 DE |
3134 | /* If the compilation unit didn't have an explicit address range, |
3135 | then use the information extracted from its child dies. */ | |
d85a05f0 | 3136 | if (! has_pc_info) |
93311388 | 3137 | { |
d85a05f0 DJ |
3138 | best_lowpc = lowpc; |
3139 | best_highpc = highpc; | |
93311388 DE |
3140 | } |
3141 | } | |
d85a05f0 DJ |
3142 | pst->textlow = best_lowpc + baseaddr; |
3143 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 3144 | |
93311388 DE |
3145 | pst->n_global_syms = objfile->global_psymbols.next - |
3146 | (objfile->global_psymbols.list + pst->globals_offset); | |
3147 | pst->n_static_syms = objfile->static_psymbols.next - | |
3148 | (objfile->static_psymbols.list + pst->statics_offset); | |
3149 | sort_pst_symbols (pst); | |
c906108c | 3150 | |
93311388 DE |
3151 | info_ptr = (beg_of_comp_unit + cu.header.length |
3152 | + cu.header.initial_length_size); | |
ae038cb0 | 3153 | |
348e048f DE |
3154 | if (this_cu->from_debug_types) |
3155 | { | |
3156 | /* It's not clear we want to do anything with stmt lists here. | |
3157 | Waiting to see what gcc ultimately does. */ | |
3158 | } | |
d85a05f0 | 3159 | else |
93311388 DE |
3160 | { |
3161 | /* Get the list of files included in the current compilation unit, | |
3162 | and build a psymtab for each of them. */ | |
d85a05f0 | 3163 | dwarf2_build_include_psymtabs (&cu, comp_unit_die, pst); |
93311388 | 3164 | } |
ae038cb0 | 3165 | |
93311388 | 3166 | do_cleanups (back_to_inner); |
ae038cb0 | 3167 | |
93311388 DE |
3168 | return info_ptr; |
3169 | } | |
ff013f42 | 3170 | |
348e048f DE |
3171 | /* Traversal function for htab_traverse_noresize. |
3172 | Process one .debug_types comp-unit. */ | |
3173 | ||
3174 | static int | |
3175 | process_type_comp_unit (void **slot, void *info) | |
3176 | { | |
3177 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
3178 | struct objfile *objfile = (struct objfile *) info; | |
3179 | struct dwarf2_per_cu_data *this_cu; | |
3180 | ||
3181 | this_cu = &entry->per_cu; | |
348e048f | 3182 | |
be391dca | 3183 | gdb_assert (dwarf2_per_objfile->types.readin); |
348e048f DE |
3184 | process_psymtab_comp_unit (objfile, this_cu, |
3185 | dwarf2_per_objfile->types.buffer, | |
3186 | dwarf2_per_objfile->types.buffer + entry->offset, | |
3187 | dwarf2_per_objfile->types.size); | |
3188 | ||
3189 | return 1; | |
3190 | } | |
3191 | ||
3192 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
3193 | Build partial symbol tables for the .debug_types comp-units. */ | |
3194 | ||
3195 | static void | |
3196 | build_type_psymtabs (struct objfile *objfile) | |
3197 | { | |
3198 | if (! create_debug_types_hash_table (objfile)) | |
3199 | return; | |
3200 | ||
3201 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
3202 | process_type_comp_unit, objfile); | |
3203 | } | |
3204 | ||
60606b2c TT |
3205 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
3206 | ||
3207 | static void | |
3208 | psymtabs_addrmap_cleanup (void *o) | |
3209 | { | |
3210 | struct objfile *objfile = o; | |
ec61707d | 3211 | |
60606b2c TT |
3212 | objfile->psymtabs_addrmap = NULL; |
3213 | } | |
3214 | ||
93311388 DE |
3215 | /* Build the partial symbol table by doing a quick pass through the |
3216 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 3217 | |
93311388 | 3218 | static void |
c67a9c90 | 3219 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 3220 | { |
93311388 | 3221 | gdb_byte *info_ptr; |
60606b2c TT |
3222 | struct cleanup *back_to, *addrmap_cleanup; |
3223 | struct obstack temp_obstack; | |
93311388 | 3224 | |
98bfdba5 PA |
3225 | dwarf2_per_objfile->reading_partial_symbols = 1; |
3226 | ||
be391dca | 3227 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
93311388 | 3228 | info_ptr = dwarf2_per_objfile->info.buffer; |
91c24f0a | 3229 | |
93311388 DE |
3230 | /* Any cached compilation units will be linked by the per-objfile |
3231 | read_in_chain. Make sure to free them when we're done. */ | |
3232 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 3233 | |
348e048f DE |
3234 | build_type_psymtabs (objfile); |
3235 | ||
93311388 | 3236 | create_all_comp_units (objfile); |
c906108c | 3237 | |
60606b2c TT |
3238 | /* Create a temporary address map on a temporary obstack. We later |
3239 | copy this to the final obstack. */ | |
3240 | obstack_init (&temp_obstack); | |
3241 | make_cleanup_obstack_free (&temp_obstack); | |
3242 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
3243 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 3244 | |
93311388 DE |
3245 | /* Since the objects we're extracting from .debug_info vary in |
3246 | length, only the individual functions to extract them (like | |
3247 | read_comp_unit_head and load_partial_die) can really know whether | |
3248 | the buffer is large enough to hold another complete object. | |
c906108c | 3249 | |
93311388 DE |
3250 | At the moment, they don't actually check that. If .debug_info |
3251 | holds just one extra byte after the last compilation unit's dies, | |
3252 | then read_comp_unit_head will happily read off the end of the | |
3253 | buffer. read_partial_die is similarly casual. Those functions | |
3254 | should be fixed. | |
c906108c | 3255 | |
93311388 DE |
3256 | For this loop condition, simply checking whether there's any data |
3257 | left at all should be sufficient. */ | |
c906108c | 3258 | |
93311388 DE |
3259 | while (info_ptr < (dwarf2_per_objfile->info.buffer |
3260 | + dwarf2_per_objfile->info.size)) | |
3261 | { | |
3262 | struct dwarf2_per_cu_data *this_cu; | |
dd373385 | 3263 | |
93311388 DE |
3264 | this_cu = dwarf2_find_comp_unit (info_ptr - dwarf2_per_objfile->info.buffer, |
3265 | objfile); | |
aaa75496 | 3266 | |
93311388 DE |
3267 | info_ptr = process_psymtab_comp_unit (objfile, this_cu, |
3268 | dwarf2_per_objfile->info.buffer, | |
3269 | info_ptr, | |
3270 | dwarf2_per_objfile->info.size); | |
c906108c | 3271 | } |
ff013f42 JK |
3272 | |
3273 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, | |
3274 | &objfile->objfile_obstack); | |
60606b2c | 3275 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 3276 | |
ae038cb0 DJ |
3277 | do_cleanups (back_to); |
3278 | } | |
3279 | ||
93311388 | 3280 | /* Load the partial DIEs for a secondary CU into memory. */ |
ae038cb0 DJ |
3281 | |
3282 | static void | |
93311388 DE |
3283 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu, |
3284 | struct objfile *objfile) | |
ae038cb0 DJ |
3285 | { |
3286 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 3287 | gdb_byte *info_ptr, *beg_of_comp_unit; |
d85a05f0 | 3288 | struct die_info *comp_unit_die; |
ae038cb0 | 3289 | struct dwarf2_cu *cu; |
1d9ec526 | 3290 | struct cleanup *free_abbrevs_cleanup, *free_cu_cleanup = NULL; |
d85a05f0 DJ |
3291 | struct attribute *attr; |
3292 | int has_children; | |
3293 | struct die_reader_specs reader_specs; | |
98bfdba5 | 3294 | int read_cu = 0; |
ae038cb0 | 3295 | |
348e048f DE |
3296 | gdb_assert (! this_cu->from_debug_types); |
3297 | ||
be391dca | 3298 | gdb_assert (dwarf2_per_objfile->info.readin); |
dce234bc | 3299 | info_ptr = dwarf2_per_objfile->info.buffer + this_cu->offset; |
ae038cb0 DJ |
3300 | beg_of_comp_unit = info_ptr; |
3301 | ||
98bfdba5 PA |
3302 | if (this_cu->cu == NULL) |
3303 | { | |
3304 | cu = alloc_one_comp_unit (objfile); | |
ae038cb0 | 3305 | |
98bfdba5 | 3306 | read_cu = 1; |
ae038cb0 | 3307 | |
98bfdba5 PA |
3308 | /* If an error occurs while loading, release our storage. */ |
3309 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
328c9494 | 3310 | |
98bfdba5 PA |
3311 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, |
3312 | dwarf2_per_objfile->info.buffer, | |
3313 | dwarf2_per_objfile->info.size, | |
3314 | abfd); | |
ae038cb0 | 3315 | |
98bfdba5 PA |
3316 | /* Complete the cu_header. */ |
3317 | cu->header.offset = this_cu->offset; | |
3318 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; | |
3319 | ||
3320 | /* Link this compilation unit into the compilation unit tree. */ | |
3321 | this_cu->cu = cu; | |
3322 | cu->per_cu = this_cu; | |
98bfdba5 PA |
3323 | |
3324 | /* Link this CU into read_in_chain. */ | |
3325 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
3326 | dwarf2_per_objfile->read_in_chain = this_cu; | |
3327 | } | |
3328 | else | |
3329 | { | |
3330 | cu = this_cu->cu; | |
3331 | info_ptr += cu->header.first_die_offset; | |
3332 | } | |
ae038cb0 DJ |
3333 | |
3334 | /* Read the abbrevs for this compilation unit into a table. */ | |
98bfdba5 | 3335 | gdb_assert (cu->dwarf2_abbrevs == NULL); |
ae038cb0 | 3336 | dwarf2_read_abbrevs (abfd, cu); |
98bfdba5 | 3337 | free_abbrevs_cleanup = make_cleanup (dwarf2_free_abbrev_table, cu); |
ae038cb0 DJ |
3338 | |
3339 | /* Read the compilation unit die. */ | |
d85a05f0 DJ |
3340 | init_cu_die_reader (&reader_specs, cu); |
3341 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
3342 | &has_children); | |
ae038cb0 DJ |
3343 | |
3344 | /* Set the language we're debugging. */ | |
d85a05f0 DJ |
3345 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); |
3346 | if (attr) | |
3347 | set_cu_language (DW_UNSND (attr), cu); | |
3348 | else | |
3349 | set_cu_language (language_minimal, cu); | |
ae038cb0 | 3350 | |
ae038cb0 DJ |
3351 | /* Check if comp unit has_children. |
3352 | If so, read the rest of the partial symbols from this comp unit. | |
3353 | If not, there's no more debug_info for this comp unit. */ | |
d85a05f0 | 3354 | if (has_children) |
93311388 | 3355 | load_partial_dies (abfd, dwarf2_per_objfile->info.buffer, info_ptr, 0, cu); |
ae038cb0 | 3356 | |
98bfdba5 PA |
3357 | do_cleanups (free_abbrevs_cleanup); |
3358 | ||
3359 | if (read_cu) | |
3360 | { | |
3361 | /* We've successfully allocated this compilation unit. Let our | |
3362 | caller clean it up when finished with it. */ | |
3363 | discard_cleanups (free_cu_cleanup); | |
3364 | } | |
ae038cb0 DJ |
3365 | } |
3366 | ||
3367 | /* Create a list of all compilation units in OBJFILE. We do this only | |
3368 | if an inter-comp-unit reference is found; presumably if there is one, | |
3369 | there will be many, and one will occur early in the .debug_info section. | |
3370 | So there's no point in building this list incrementally. */ | |
3371 | ||
3372 | static void | |
3373 | create_all_comp_units (struct objfile *objfile) | |
3374 | { | |
3375 | int n_allocated; | |
3376 | int n_comp_units; | |
3377 | struct dwarf2_per_cu_data **all_comp_units; | |
be391dca TT |
3378 | gdb_byte *info_ptr; |
3379 | ||
3380 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
3381 | info_ptr = dwarf2_per_objfile->info.buffer; | |
ae038cb0 DJ |
3382 | |
3383 | n_comp_units = 0; | |
3384 | n_allocated = 10; | |
3385 | all_comp_units = xmalloc (n_allocated | |
3386 | * sizeof (struct dwarf2_per_cu_data *)); | |
6e70227d | 3387 | |
dce234bc | 3388 | while (info_ptr < dwarf2_per_objfile->info.buffer + dwarf2_per_objfile->info.size) |
ae038cb0 | 3389 | { |
c764a876 | 3390 | unsigned int length, initial_length_size; |
ae038cb0 | 3391 | struct dwarf2_per_cu_data *this_cu; |
c764a876 | 3392 | unsigned int offset; |
ae038cb0 | 3393 | |
dce234bc | 3394 | offset = info_ptr - dwarf2_per_objfile->info.buffer; |
ae038cb0 DJ |
3395 | |
3396 | /* Read just enough information to find out where the next | |
3397 | compilation unit is. */ | |
c764a876 DE |
3398 | length = read_initial_length (objfile->obfd, info_ptr, |
3399 | &initial_length_size); | |
ae038cb0 DJ |
3400 | |
3401 | /* Save the compilation unit for later lookup. */ | |
3402 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
3403 | sizeof (struct dwarf2_per_cu_data)); | |
3404 | memset (this_cu, 0, sizeof (*this_cu)); | |
3405 | this_cu->offset = offset; | |
c764a876 | 3406 | this_cu->length = length + initial_length_size; |
9291a0cd | 3407 | this_cu->objfile = objfile; |
ae038cb0 DJ |
3408 | |
3409 | if (n_comp_units == n_allocated) | |
3410 | { | |
3411 | n_allocated *= 2; | |
3412 | all_comp_units = xrealloc (all_comp_units, | |
3413 | n_allocated | |
3414 | * sizeof (struct dwarf2_per_cu_data *)); | |
3415 | } | |
3416 | all_comp_units[n_comp_units++] = this_cu; | |
3417 | ||
3418 | info_ptr = info_ptr + this_cu->length; | |
3419 | } | |
3420 | ||
3421 | dwarf2_per_objfile->all_comp_units | |
3422 | = obstack_alloc (&objfile->objfile_obstack, | |
3423 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
3424 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
3425 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
3426 | xfree (all_comp_units); | |
3427 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
3428 | } |
3429 | ||
5734ee8b DJ |
3430 | /* Process all loaded DIEs for compilation unit CU, starting at |
3431 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
3432 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
3433 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
3434 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
3435 | and record the covered ranges in the addrmap. */ | |
c906108c | 3436 | |
72bf9492 DJ |
3437 | static void |
3438 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 3439 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 3440 | { |
72bf9492 | 3441 | struct partial_die_info *pdi; |
c906108c | 3442 | |
91c24f0a DC |
3443 | /* Now, march along the PDI's, descending into ones which have |
3444 | interesting children but skipping the children of the other ones, | |
3445 | until we reach the end of the compilation unit. */ | |
c906108c | 3446 | |
72bf9492 | 3447 | pdi = first_die; |
91c24f0a | 3448 | |
72bf9492 DJ |
3449 | while (pdi != NULL) |
3450 | { | |
3451 | fixup_partial_die (pdi, cu); | |
c906108c | 3452 | |
f55ee35c | 3453 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
3454 | children, so we need to look at them. Ditto for anonymous |
3455 | enums. */ | |
933c6fe4 | 3456 | |
72bf9492 | 3457 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
f55ee35c | 3458 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type) |
c906108c | 3459 | { |
72bf9492 | 3460 | switch (pdi->tag) |
c906108c SS |
3461 | { |
3462 | case DW_TAG_subprogram: | |
5734ee8b | 3463 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 3464 | break; |
72929c62 | 3465 | case DW_TAG_constant: |
c906108c SS |
3466 | case DW_TAG_variable: |
3467 | case DW_TAG_typedef: | |
91c24f0a | 3468 | case DW_TAG_union_type: |
72bf9492 | 3469 | if (!pdi->is_declaration) |
63d06c5c | 3470 | { |
72bf9492 | 3471 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
3472 | } |
3473 | break; | |
c906108c | 3474 | case DW_TAG_class_type: |
680b30c7 | 3475 | case DW_TAG_interface_type: |
c906108c | 3476 | case DW_TAG_structure_type: |
72bf9492 | 3477 | if (!pdi->is_declaration) |
c906108c | 3478 | { |
72bf9492 | 3479 | add_partial_symbol (pdi, cu); |
c906108c SS |
3480 | } |
3481 | break; | |
91c24f0a | 3482 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
3483 | if (!pdi->is_declaration) |
3484 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
3485 | break; |
3486 | case DW_TAG_base_type: | |
a02abb62 | 3487 | case DW_TAG_subrange_type: |
c906108c | 3488 | /* File scope base type definitions are added to the partial |
c5aa993b | 3489 | symbol table. */ |
72bf9492 | 3490 | add_partial_symbol (pdi, cu); |
c906108c | 3491 | break; |
d9fa45fe | 3492 | case DW_TAG_namespace: |
5734ee8b | 3493 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 3494 | break; |
5d7cb8df JK |
3495 | case DW_TAG_module: |
3496 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
3497 | break; | |
c906108c SS |
3498 | default: |
3499 | break; | |
3500 | } | |
3501 | } | |
3502 | ||
72bf9492 DJ |
3503 | /* If the die has a sibling, skip to the sibling. */ |
3504 | ||
3505 | pdi = pdi->die_sibling; | |
3506 | } | |
3507 | } | |
3508 | ||
3509 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 3510 | |
72bf9492 | 3511 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
3512 | name is concatenated with "::" and the partial DIE's name. For |
3513 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
3514 | Enumerators are an exception; they use the scope of their parent |
3515 | enumeration type, i.e. the name of the enumeration type is not | |
3516 | prepended to the enumerator. | |
91c24f0a | 3517 | |
72bf9492 DJ |
3518 | There are two complexities. One is DW_AT_specification; in this |
3519 | case "parent" means the parent of the target of the specification, | |
3520 | instead of the direct parent of the DIE. The other is compilers | |
3521 | which do not emit DW_TAG_namespace; in this case we try to guess | |
3522 | the fully qualified name of structure types from their members' | |
3523 | linkage names. This must be done using the DIE's children rather | |
3524 | than the children of any DW_AT_specification target. We only need | |
3525 | to do this for structures at the top level, i.e. if the target of | |
3526 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
3527 | have a parent. */ | |
3528 | ||
3529 | /* Compute the scope prefix associated with PDI's parent, in | |
3530 | compilation unit CU. The result will be allocated on CU's | |
3531 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
3532 | field. NULL is returned if no prefix is necessary. */ | |
3533 | static char * | |
3534 | partial_die_parent_scope (struct partial_die_info *pdi, | |
3535 | struct dwarf2_cu *cu) | |
3536 | { | |
3537 | char *grandparent_scope; | |
3538 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 3539 | |
72bf9492 DJ |
3540 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
3541 | then this means the parent of the specification DIE. */ | |
3542 | ||
3543 | real_pdi = pdi; | |
72bf9492 | 3544 | while (real_pdi->has_specification) |
10b3939b | 3545 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
3546 | |
3547 | parent = real_pdi->die_parent; | |
3548 | if (parent == NULL) | |
3549 | return NULL; | |
3550 | ||
3551 | if (parent->scope_set) | |
3552 | return parent->scope; | |
3553 | ||
3554 | fixup_partial_die (parent, cu); | |
3555 | ||
10b3939b | 3556 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 3557 | |
acebe513 UW |
3558 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
3559 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
3560 | Work around this problem here. */ | |
3561 | if (cu->language == language_cplus | |
6e70227d | 3562 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
3563 | && strcmp (parent->name, "::") == 0 |
3564 | && grandparent_scope == NULL) | |
3565 | { | |
3566 | parent->scope = NULL; | |
3567 | parent->scope_set = 1; | |
3568 | return NULL; | |
3569 | } | |
3570 | ||
72bf9492 | 3571 | if (parent->tag == DW_TAG_namespace |
f55ee35c | 3572 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
3573 | || parent->tag == DW_TAG_structure_type |
3574 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 3575 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
3576 | || parent->tag == DW_TAG_union_type |
3577 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
3578 | { |
3579 | if (grandparent_scope == NULL) | |
3580 | parent->scope = parent->name; | |
3581 | else | |
987504bb | 3582 | parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope, |
f55ee35c | 3583 | parent->name, 0, cu); |
72bf9492 | 3584 | } |
ceeb3d5a | 3585 | else if (parent->tag == DW_TAG_enumerator) |
72bf9492 DJ |
3586 | /* Enumerators should not get the name of the enumeration as a prefix. */ |
3587 | parent->scope = grandparent_scope; | |
3588 | else | |
3589 | { | |
3590 | /* FIXME drow/2004-04-01: What should we be doing with | |
3591 | function-local names? For partial symbols, we should probably be | |
3592 | ignoring them. */ | |
3593 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3594 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
3595 | parent->tag, pdi->offset); |
3596 | parent->scope = grandparent_scope; | |
c906108c SS |
3597 | } |
3598 | ||
72bf9492 DJ |
3599 | parent->scope_set = 1; |
3600 | return parent->scope; | |
3601 | } | |
3602 | ||
3603 | /* Return the fully scoped name associated with PDI, from compilation unit | |
3604 | CU. The result will be allocated with malloc. */ | |
3605 | static char * | |
3606 | partial_die_full_name (struct partial_die_info *pdi, | |
3607 | struct dwarf2_cu *cu) | |
3608 | { | |
3609 | char *parent_scope; | |
3610 | ||
98bfdba5 PA |
3611 | /* If this is a template instantiation, we can not work out the |
3612 | template arguments from partial DIEs. So, unfortunately, we have | |
3613 | to go through the full DIEs. At least any work we do building | |
3614 | types here will be reused if full symbols are loaded later. */ | |
3615 | if (pdi->has_template_arguments) | |
3616 | { | |
3617 | fixup_partial_die (pdi, cu); | |
3618 | ||
3619 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
3620 | { | |
3621 | struct die_info *die; | |
3622 | struct attribute attr; | |
3623 | struct dwarf2_cu *ref_cu = cu; | |
3624 | ||
3625 | attr.name = 0; | |
3626 | attr.form = DW_FORM_ref_addr; | |
3627 | attr.u.addr = pdi->offset; | |
3628 | die = follow_die_ref (NULL, &attr, &ref_cu); | |
3629 | ||
3630 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
3631 | } | |
3632 | } | |
3633 | ||
72bf9492 DJ |
3634 | parent_scope = partial_die_parent_scope (pdi, cu); |
3635 | if (parent_scope == NULL) | |
3636 | return NULL; | |
3637 | else | |
f55ee35c | 3638 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
3639 | } |
3640 | ||
3641 | static void | |
72bf9492 | 3642 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 3643 | { |
e7c27a73 | 3644 | struct objfile *objfile = cu->objfile; |
c906108c | 3645 | CORE_ADDR addr = 0; |
decbce07 | 3646 | char *actual_name = NULL; |
5c4e30ca | 3647 | const struct partial_symbol *psym = NULL; |
e142c38c | 3648 | CORE_ADDR baseaddr; |
72bf9492 | 3649 | int built_actual_name = 0; |
e142c38c DJ |
3650 | |
3651 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 3652 | |
94af9270 KS |
3653 | actual_name = partial_die_full_name (pdi, cu); |
3654 | if (actual_name) | |
3655 | built_actual_name = 1; | |
63d06c5c | 3656 | |
72bf9492 DJ |
3657 | if (actual_name == NULL) |
3658 | actual_name = pdi->name; | |
3659 | ||
c906108c SS |
3660 | switch (pdi->tag) |
3661 | { | |
3662 | case DW_TAG_subprogram: | |
2cfa0c8d | 3663 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 3664 | { |
2cfa0c8d JB |
3665 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
3666 | of the global scope. But in Ada, we want to be able to access | |
3667 | nested procedures globally. So all Ada subprograms are stored | |
3668 | in the global scope. */ | |
38d518c9 | 3669 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 3670 | mst_text, objfile); */ |
38d518c9 | 3671 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3672 | built_actual_name, |
5c4e30ca DC |
3673 | VAR_DOMAIN, LOC_BLOCK, |
3674 | &objfile->global_psymbols, | |
3675 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 3676 | cu->language, objfile); |
c906108c SS |
3677 | } |
3678 | else | |
3679 | { | |
38d518c9 | 3680 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 3681 | mst_file_text, objfile); */ |
38d518c9 | 3682 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3683 | built_actual_name, |
5c4e30ca DC |
3684 | VAR_DOMAIN, LOC_BLOCK, |
3685 | &objfile->static_psymbols, | |
3686 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 3687 | cu->language, objfile); |
c906108c SS |
3688 | } |
3689 | break; | |
72929c62 JB |
3690 | case DW_TAG_constant: |
3691 | { | |
3692 | struct psymbol_allocation_list *list; | |
3693 | ||
3694 | if (pdi->is_external) | |
3695 | list = &objfile->global_psymbols; | |
3696 | else | |
3697 | list = &objfile->static_psymbols; | |
3698 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), | |
3699 | built_actual_name, VAR_DOMAIN, LOC_STATIC, | |
3700 | list, 0, 0, cu->language, objfile); | |
3701 | ||
3702 | } | |
3703 | break; | |
c906108c | 3704 | case DW_TAG_variable: |
caac4577 JG |
3705 | if (pdi->locdesc) |
3706 | addr = decode_locdesc (pdi->locdesc, cu); | |
3707 | ||
3708 | if (pdi->locdesc | |
3709 | && addr == 0 | |
3710 | && !dwarf2_per_objfile->has_section_at_zero) | |
3711 | { | |
3712 | /* A global or static variable may also have been stripped | |
3713 | out by the linker if unused, in which case its address | |
3714 | will be nullified; do not add such variables into partial | |
3715 | symbol table then. */ | |
3716 | } | |
3717 | else if (pdi->is_external) | |
c906108c SS |
3718 | { |
3719 | /* Global Variable. | |
3720 | Don't enter into the minimal symbol tables as there is | |
3721 | a minimal symbol table entry from the ELF symbols already. | |
3722 | Enter into partial symbol table if it has a location | |
3723 | descriptor or a type. | |
3724 | If the location descriptor is missing, new_symbol will create | |
3725 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
3726 | be determined from the minimal symbol table whenever the variable | |
3727 | is referenced. | |
3728 | The address for the partial symbol table entry is not | |
3729 | used by GDB, but it comes in handy for debugging partial symbol | |
3730 | table building. */ | |
3731 | ||
c906108c | 3732 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 3733 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3734 | built_actual_name, |
5c4e30ca DC |
3735 | VAR_DOMAIN, LOC_STATIC, |
3736 | &objfile->global_psymbols, | |
3737 | 0, addr + baseaddr, | |
e142c38c | 3738 | cu->language, objfile); |
c906108c SS |
3739 | } |
3740 | else | |
3741 | { | |
3742 | /* Static Variable. Skip symbols without location descriptors. */ | |
3743 | if (pdi->locdesc == NULL) | |
decbce07 MS |
3744 | { |
3745 | if (built_actual_name) | |
3746 | xfree (actual_name); | |
3747 | return; | |
3748 | } | |
38d518c9 | 3749 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 3750 | mst_file_data, objfile); */ |
38d518c9 | 3751 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3752 | built_actual_name, |
5c4e30ca DC |
3753 | VAR_DOMAIN, LOC_STATIC, |
3754 | &objfile->static_psymbols, | |
3755 | 0, addr + baseaddr, | |
e142c38c | 3756 | cu->language, objfile); |
c906108c SS |
3757 | } |
3758 | break; | |
3759 | case DW_TAG_typedef: | |
3760 | case DW_TAG_base_type: | |
a02abb62 | 3761 | case DW_TAG_subrange_type: |
38d518c9 | 3762 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3763 | built_actual_name, |
176620f1 | 3764 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 3765 | &objfile->static_psymbols, |
e142c38c | 3766 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 3767 | break; |
72bf9492 DJ |
3768 | case DW_TAG_namespace: |
3769 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
04a679b8 | 3770 | built_actual_name, |
72bf9492 DJ |
3771 | VAR_DOMAIN, LOC_TYPEDEF, |
3772 | &objfile->global_psymbols, | |
3773 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
3774 | break; | |
c906108c | 3775 | case DW_TAG_class_type: |
680b30c7 | 3776 | case DW_TAG_interface_type: |
c906108c SS |
3777 | case DW_TAG_structure_type: |
3778 | case DW_TAG_union_type: | |
3779 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
3780 | /* Skip external references. The DWARF standard says in the section |
3781 | about "Structure, Union, and Class Type Entries": "An incomplete | |
3782 | structure, union or class type is represented by a structure, | |
3783 | union or class entry that does not have a byte size attribute | |
3784 | and that has a DW_AT_declaration attribute." */ | |
3785 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
3786 | { |
3787 | if (built_actual_name) | |
3788 | xfree (actual_name); | |
3789 | return; | |
3790 | } | |
fa4028e9 | 3791 | |
63d06c5c DC |
3792 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
3793 | static vs. global. */ | |
38d518c9 | 3794 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3795 | built_actual_name, |
176620f1 | 3796 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
3797 | (cu->language == language_cplus |
3798 | || cu->language == language_java) | |
63d06c5c DC |
3799 | ? &objfile->global_psymbols |
3800 | : &objfile->static_psymbols, | |
e142c38c | 3801 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 3802 | |
c906108c SS |
3803 | break; |
3804 | case DW_TAG_enumerator: | |
38d518c9 | 3805 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3806 | built_actual_name, |
176620f1 | 3807 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
3808 | (cu->language == language_cplus |
3809 | || cu->language == language_java) | |
f6fe98ef DJ |
3810 | ? &objfile->global_psymbols |
3811 | : &objfile->static_psymbols, | |
e142c38c | 3812 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
3813 | break; |
3814 | default: | |
3815 | break; | |
3816 | } | |
5c4e30ca | 3817 | |
72bf9492 DJ |
3818 | if (built_actual_name) |
3819 | xfree (actual_name); | |
c906108c SS |
3820 | } |
3821 | ||
5c4e30ca DC |
3822 | /* Read a partial die corresponding to a namespace; also, add a symbol |
3823 | corresponding to that namespace to the symbol table. NAMESPACE is | |
3824 | the name of the enclosing namespace. */ | |
91c24f0a | 3825 | |
72bf9492 DJ |
3826 | static void |
3827 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 3828 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 3829 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 3830 | { |
72bf9492 | 3831 | /* Add a symbol for the namespace. */ |
e7c27a73 | 3832 | |
72bf9492 | 3833 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
3834 | |
3835 | /* Now scan partial symbols in that namespace. */ | |
3836 | ||
91c24f0a | 3837 | if (pdi->has_children) |
5734ee8b | 3838 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
3839 | } |
3840 | ||
5d7cb8df JK |
3841 | /* Read a partial die corresponding to a Fortran module. */ |
3842 | ||
3843 | static void | |
3844 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
3845 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
3846 | { | |
f55ee35c | 3847 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
3848 | |
3849 | if (pdi->has_children) | |
3850 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
3851 | } | |
3852 | ||
bc30ff58 JB |
3853 | /* Read a partial die corresponding to a subprogram and create a partial |
3854 | symbol for that subprogram. When the CU language allows it, this | |
3855 | routine also defines a partial symbol for each nested subprogram | |
3856 | that this subprogram contains. | |
6e70227d | 3857 | |
bc30ff58 JB |
3858 | DIE my also be a lexical block, in which case we simply search |
3859 | recursively for suprograms defined inside that lexical block. | |
3860 | Again, this is only performed when the CU language allows this | |
3861 | type of definitions. */ | |
3862 | ||
3863 | static void | |
3864 | add_partial_subprogram (struct partial_die_info *pdi, | |
3865 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 3866 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
3867 | { |
3868 | if (pdi->tag == DW_TAG_subprogram) | |
3869 | { | |
3870 | if (pdi->has_pc_info) | |
3871 | { | |
3872 | if (pdi->lowpc < *lowpc) | |
3873 | *lowpc = pdi->lowpc; | |
3874 | if (pdi->highpc > *highpc) | |
3875 | *highpc = pdi->highpc; | |
5734ee8b DJ |
3876 | if (need_pc) |
3877 | { | |
3878 | CORE_ADDR baseaddr; | |
3879 | struct objfile *objfile = cu->objfile; | |
3880 | ||
3881 | baseaddr = ANOFFSET (objfile->section_offsets, | |
3882 | SECT_OFF_TEXT (objfile)); | |
3883 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
3884 | pdi->lowpc + baseaddr, |
3885 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 3886 | cu->per_cu->v.psymtab); |
5734ee8b | 3887 | } |
bc30ff58 | 3888 | if (!pdi->is_declaration) |
e8d05480 JB |
3889 | /* Ignore subprogram DIEs that do not have a name, they are |
3890 | illegal. Do not emit a complaint at this point, we will | |
3891 | do so when we convert this psymtab into a symtab. */ | |
3892 | if (pdi->name) | |
3893 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
3894 | } |
3895 | } | |
6e70227d | 3896 | |
bc30ff58 JB |
3897 | if (! pdi->has_children) |
3898 | return; | |
3899 | ||
3900 | if (cu->language == language_ada) | |
3901 | { | |
3902 | pdi = pdi->die_child; | |
3903 | while (pdi != NULL) | |
3904 | { | |
3905 | fixup_partial_die (pdi, cu); | |
3906 | if (pdi->tag == DW_TAG_subprogram | |
3907 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 3908 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
3909 | pdi = pdi->die_sibling; |
3910 | } | |
3911 | } | |
3912 | } | |
3913 | ||
91c24f0a DC |
3914 | /* Read a partial die corresponding to an enumeration type. */ |
3915 | ||
72bf9492 DJ |
3916 | static void |
3917 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
3918 | struct dwarf2_cu *cu) | |
91c24f0a | 3919 | { |
72bf9492 | 3920 | struct partial_die_info *pdi; |
91c24f0a DC |
3921 | |
3922 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
3923 | add_partial_symbol (enum_pdi, cu); |
3924 | ||
3925 | pdi = enum_pdi->die_child; | |
3926 | while (pdi) | |
91c24f0a | 3927 | { |
72bf9492 | 3928 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 3929 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 3930 | else |
72bf9492 DJ |
3931 | add_partial_symbol (pdi, cu); |
3932 | pdi = pdi->die_sibling; | |
91c24f0a | 3933 | } |
91c24f0a DC |
3934 | } |
3935 | ||
4bb7a0a7 DJ |
3936 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
3937 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
3938 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
3939 | the initial number. */ | |
3940 | ||
3941 | static struct abbrev_info * | |
fe1b8b76 | 3942 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 3943 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
3944 | { |
3945 | bfd *abfd = cu->objfile->obfd; | |
3946 | unsigned int abbrev_number; | |
3947 | struct abbrev_info *abbrev; | |
3948 | ||
3949 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
3950 | ||
3951 | if (abbrev_number == 0) | |
3952 | return NULL; | |
3953 | ||
3954 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
3955 | if (!abbrev) | |
3956 | { | |
8a3fe4f8 | 3957 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), abbrev_number, |
4bb7a0a7 DJ |
3958 | bfd_get_filename (abfd)); |
3959 | } | |
3960 | ||
3961 | return abbrev; | |
3962 | } | |
3963 | ||
93311388 DE |
3964 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
3965 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
3966 | DIE. Any children of the skipped DIEs will also be skipped. */ |
3967 | ||
fe1b8b76 | 3968 | static gdb_byte * |
93311388 | 3969 | skip_children (gdb_byte *buffer, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
3970 | { |
3971 | struct abbrev_info *abbrev; | |
3972 | unsigned int bytes_read; | |
3973 | ||
3974 | while (1) | |
3975 | { | |
3976 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
3977 | if (abbrev == NULL) | |
3978 | return info_ptr + bytes_read; | |
3979 | else | |
93311388 | 3980 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
4bb7a0a7 DJ |
3981 | } |
3982 | } | |
3983 | ||
93311388 DE |
3984 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
3985 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
3986 | abbrev corresponding to that skipped uleb128 should be passed in |
3987 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
3988 | children. */ | |
3989 | ||
fe1b8b76 | 3990 | static gdb_byte * |
93311388 DE |
3991 | skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
3992 | struct abbrev_info *abbrev, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
3993 | { |
3994 | unsigned int bytes_read; | |
3995 | struct attribute attr; | |
3996 | bfd *abfd = cu->objfile->obfd; | |
3997 | unsigned int form, i; | |
3998 | ||
3999 | for (i = 0; i < abbrev->num_attrs; i++) | |
4000 | { | |
4001 | /* The only abbrev we care about is DW_AT_sibling. */ | |
4002 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
4003 | { | |
4004 | read_attribute (&attr, &abbrev->attrs[i], | |
4005 | abfd, info_ptr, cu); | |
4006 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 4007 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 4008 | else |
93311388 | 4009 | return buffer + dwarf2_get_ref_die_offset (&attr); |
4bb7a0a7 DJ |
4010 | } |
4011 | ||
4012 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
4013 | form = abbrev->attrs[i].form; | |
4014 | skip_attribute: | |
4015 | switch (form) | |
4016 | { | |
4bb7a0a7 | 4017 | case DW_FORM_ref_addr: |
ae411497 TT |
4018 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
4019 | and later it is offset sized. */ | |
4020 | if (cu->header.version == 2) | |
4021 | info_ptr += cu->header.addr_size; | |
4022 | else | |
4023 | info_ptr += cu->header.offset_size; | |
4024 | break; | |
4025 | case DW_FORM_addr: | |
4bb7a0a7 DJ |
4026 | info_ptr += cu->header.addr_size; |
4027 | break; | |
4028 | case DW_FORM_data1: | |
4029 | case DW_FORM_ref1: | |
4030 | case DW_FORM_flag: | |
4031 | info_ptr += 1; | |
4032 | break; | |
2dc7f7b3 TT |
4033 | case DW_FORM_flag_present: |
4034 | break; | |
4bb7a0a7 DJ |
4035 | case DW_FORM_data2: |
4036 | case DW_FORM_ref2: | |
4037 | info_ptr += 2; | |
4038 | break; | |
4039 | case DW_FORM_data4: | |
4040 | case DW_FORM_ref4: | |
4041 | info_ptr += 4; | |
4042 | break; | |
4043 | case DW_FORM_data8: | |
4044 | case DW_FORM_ref8: | |
348e048f | 4045 | case DW_FORM_sig8: |
4bb7a0a7 DJ |
4046 | info_ptr += 8; |
4047 | break; | |
4048 | case DW_FORM_string: | |
9b1c24c8 | 4049 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
4050 | info_ptr += bytes_read; |
4051 | break; | |
2dc7f7b3 | 4052 | case DW_FORM_sec_offset: |
4bb7a0a7 DJ |
4053 | case DW_FORM_strp: |
4054 | info_ptr += cu->header.offset_size; | |
4055 | break; | |
2dc7f7b3 | 4056 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
4057 | case DW_FORM_block: |
4058 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4059 | info_ptr += bytes_read; | |
4060 | break; | |
4061 | case DW_FORM_block1: | |
4062 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
4063 | break; | |
4064 | case DW_FORM_block2: | |
4065 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
4066 | break; | |
4067 | case DW_FORM_block4: | |
4068 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
4069 | break; | |
4070 | case DW_FORM_sdata: | |
4071 | case DW_FORM_udata: | |
4072 | case DW_FORM_ref_udata: | |
4073 | info_ptr = skip_leb128 (abfd, info_ptr); | |
4074 | break; | |
4075 | case DW_FORM_indirect: | |
4076 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4077 | info_ptr += bytes_read; | |
4078 | /* We need to continue parsing from here, so just go back to | |
4079 | the top. */ | |
4080 | goto skip_attribute; | |
4081 | ||
4082 | default: | |
8a3fe4f8 | 4083 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
4bb7a0a7 DJ |
4084 | dwarf_form_name (form), |
4085 | bfd_get_filename (abfd)); | |
4086 | } | |
4087 | } | |
4088 | ||
4089 | if (abbrev->has_children) | |
93311388 | 4090 | return skip_children (buffer, info_ptr, cu); |
4bb7a0a7 DJ |
4091 | else |
4092 | return info_ptr; | |
4093 | } | |
4094 | ||
93311388 DE |
4095 | /* Locate ORIG_PDI's sibling. |
4096 | INFO_PTR should point to the start of the next DIE after ORIG_PDI | |
4097 | in BUFFER. */ | |
91c24f0a | 4098 | |
fe1b8b76 | 4099 | static gdb_byte * |
93311388 DE |
4100 | locate_pdi_sibling (struct partial_die_info *orig_pdi, |
4101 | gdb_byte *buffer, gdb_byte *info_ptr, | |
e7c27a73 | 4102 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
4103 | { |
4104 | /* Do we know the sibling already? */ | |
72bf9492 | 4105 | |
91c24f0a DC |
4106 | if (orig_pdi->sibling) |
4107 | return orig_pdi->sibling; | |
4108 | ||
4109 | /* Are there any children to deal with? */ | |
4110 | ||
4111 | if (!orig_pdi->has_children) | |
4112 | return info_ptr; | |
4113 | ||
4bb7a0a7 | 4114 | /* Skip the children the long way. */ |
91c24f0a | 4115 | |
93311388 | 4116 | return skip_children (buffer, info_ptr, cu); |
91c24f0a DC |
4117 | } |
4118 | ||
c906108c SS |
4119 | /* Expand this partial symbol table into a full symbol table. */ |
4120 | ||
4121 | static void | |
fba45db2 | 4122 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c | 4123 | { |
c906108c SS |
4124 | if (pst != NULL) |
4125 | { | |
4126 | if (pst->readin) | |
4127 | { | |
8a3fe4f8 | 4128 | warning (_("bug: psymtab for %s is already read in."), pst->filename); |
c906108c SS |
4129 | } |
4130 | else | |
4131 | { | |
4132 | if (info_verbose) | |
4133 | { | |
a3f17187 | 4134 | printf_filtered (_("Reading in symbols for %s..."), pst->filename); |
c906108c SS |
4135 | gdb_flush (gdb_stdout); |
4136 | } | |
4137 | ||
10b3939b DJ |
4138 | /* Restore our global data. */ |
4139 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
4140 | dwarf2_objfile_data_key); | |
4141 | ||
b2ab525c KB |
4142 | /* If this psymtab is constructed from a debug-only objfile, the |
4143 | has_section_at_zero flag will not necessarily be correct. We | |
4144 | can get the correct value for this flag by looking at the data | |
4145 | associated with the (presumably stripped) associated objfile. */ | |
4146 | if (pst->objfile->separate_debug_objfile_backlink) | |
4147 | { | |
4148 | struct dwarf2_per_objfile *dpo_backlink | |
4149 | = objfile_data (pst->objfile->separate_debug_objfile_backlink, | |
4150 | dwarf2_objfile_data_key); | |
9a619af0 | 4151 | |
b2ab525c KB |
4152 | dwarf2_per_objfile->has_section_at_zero |
4153 | = dpo_backlink->has_section_at_zero; | |
4154 | } | |
4155 | ||
98bfdba5 PA |
4156 | dwarf2_per_objfile->reading_partial_symbols = 0; |
4157 | ||
c906108c SS |
4158 | psymtab_to_symtab_1 (pst); |
4159 | ||
4160 | /* Finish up the debug error message. */ | |
4161 | if (info_verbose) | |
a3f17187 | 4162 | printf_filtered (_("done.\n")); |
c906108c SS |
4163 | } |
4164 | } | |
4165 | } | |
4166 | ||
10b3939b DJ |
4167 | /* Add PER_CU to the queue. */ |
4168 | ||
4169 | static void | |
03dd20cc | 4170 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b DJ |
4171 | { |
4172 | struct dwarf2_queue_item *item; | |
4173 | ||
4174 | per_cu->queued = 1; | |
4175 | item = xmalloc (sizeof (*item)); | |
4176 | item->per_cu = per_cu; | |
4177 | item->next = NULL; | |
4178 | ||
4179 | if (dwarf2_queue == NULL) | |
4180 | dwarf2_queue = item; | |
4181 | else | |
4182 | dwarf2_queue_tail->next = item; | |
4183 | ||
4184 | dwarf2_queue_tail = item; | |
4185 | } | |
4186 | ||
4187 | /* Process the queue. */ | |
4188 | ||
4189 | static void | |
4190 | process_queue (struct objfile *objfile) | |
4191 | { | |
4192 | struct dwarf2_queue_item *item, *next_item; | |
4193 | ||
03dd20cc DJ |
4194 | /* The queue starts out with one item, but following a DIE reference |
4195 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
4196 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
4197 | { | |
9291a0cd TT |
4198 | if (dwarf2_per_objfile->using_index |
4199 | ? !item->per_cu->v.quick->symtab | |
4200 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
10b3939b DJ |
4201 | process_full_comp_unit (item->per_cu); |
4202 | ||
4203 | item->per_cu->queued = 0; | |
4204 | next_item = item->next; | |
4205 | xfree (item); | |
4206 | } | |
4207 | ||
4208 | dwarf2_queue_tail = NULL; | |
4209 | } | |
4210 | ||
4211 | /* Free all allocated queue entries. This function only releases anything if | |
4212 | an error was thrown; if the queue was processed then it would have been | |
4213 | freed as we went along. */ | |
4214 | ||
4215 | static void | |
4216 | dwarf2_release_queue (void *dummy) | |
4217 | { | |
4218 | struct dwarf2_queue_item *item, *last; | |
4219 | ||
4220 | item = dwarf2_queue; | |
4221 | while (item) | |
4222 | { | |
4223 | /* Anything still marked queued is likely to be in an | |
4224 | inconsistent state, so discard it. */ | |
4225 | if (item->per_cu->queued) | |
4226 | { | |
4227 | if (item->per_cu->cu != NULL) | |
4228 | free_one_cached_comp_unit (item->per_cu->cu); | |
4229 | item->per_cu->queued = 0; | |
4230 | } | |
4231 | ||
4232 | last = item; | |
4233 | item = item->next; | |
4234 | xfree (last); | |
4235 | } | |
4236 | ||
4237 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
4238 | } | |
4239 | ||
4240 | /* Read in full symbols for PST, and anything it depends on. */ | |
4241 | ||
c906108c | 4242 | static void |
fba45db2 | 4243 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 4244 | { |
10b3939b | 4245 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 4246 | struct cleanup *back_to; |
aaa75496 JB |
4247 | int i; |
4248 | ||
4249 | for (i = 0; i < pst->number_of_dependencies; i++) | |
4250 | if (!pst->dependencies[i]->readin) | |
4251 | { | |
4252 | /* Inform about additional files that need to be read in. */ | |
4253 | if (info_verbose) | |
4254 | { | |
a3f17187 | 4255 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
4256 | fputs_filtered (" ", gdb_stdout); |
4257 | wrap_here (""); | |
4258 | fputs_filtered ("and ", gdb_stdout); | |
4259 | wrap_here (""); | |
4260 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
4261 | wrap_here (""); /* Flush output */ | |
4262 | gdb_flush (gdb_stdout); | |
4263 | } | |
4264 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
4265 | } | |
4266 | ||
e38df1d0 | 4267 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
4268 | |
4269 | if (per_cu == NULL) | |
aaa75496 JB |
4270 | { |
4271 | /* It's an include file, no symbols to read for it. | |
4272 | Everything is in the parent symtab. */ | |
4273 | pst->readin = 1; | |
4274 | return; | |
4275 | } | |
c906108c | 4276 | |
9291a0cd | 4277 | dw2_do_instantiate_symtab (pst->objfile, per_cu); |
10b3939b DJ |
4278 | } |
4279 | ||
93311388 | 4280 | /* Load the DIEs associated with PER_CU into memory. */ |
10b3939b | 4281 | |
93311388 | 4282 | static void |
31ffec48 | 4283 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b | 4284 | { |
31ffec48 | 4285 | bfd *abfd = objfile->obfd; |
10b3939b | 4286 | struct dwarf2_cu *cu; |
c764a876 | 4287 | unsigned int offset; |
93311388 | 4288 | gdb_byte *info_ptr, *beg_of_comp_unit; |
98bfdba5 | 4289 | struct cleanup *free_abbrevs_cleanup = NULL, *free_cu_cleanup = NULL; |
10b3939b | 4290 | struct attribute *attr; |
98bfdba5 | 4291 | int read_cu = 0; |
6502dd73 | 4292 | |
348e048f DE |
4293 | gdb_assert (! per_cu->from_debug_types); |
4294 | ||
c906108c | 4295 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 4296 | offset = per_cu->offset; |
6502dd73 | 4297 | |
be391dca | 4298 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
dce234bc | 4299 | info_ptr = dwarf2_per_objfile->info.buffer + offset; |
93311388 | 4300 | beg_of_comp_unit = info_ptr; |
63d06c5c | 4301 | |
98bfdba5 PA |
4302 | if (per_cu->cu == NULL) |
4303 | { | |
4304 | cu = alloc_one_comp_unit (objfile); | |
4305 | ||
4306 | read_cu = 1; | |
c906108c | 4307 | |
98bfdba5 PA |
4308 | /* If an error occurs while loading, release our storage. */ |
4309 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 4310 | |
98bfdba5 PA |
4311 | /* Read in the comp_unit header. */ |
4312 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); | |
c906108c | 4313 | |
98bfdba5 PA |
4314 | /* Complete the cu_header. */ |
4315 | cu->header.offset = offset; | |
4316 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; | |
93311388 | 4317 | |
98bfdba5 PA |
4318 | /* Read the abbrevs for this compilation unit. */ |
4319 | dwarf2_read_abbrevs (abfd, cu); | |
4320 | free_abbrevs_cleanup = make_cleanup (dwarf2_free_abbrev_table, cu); | |
10b3939b | 4321 | |
98bfdba5 PA |
4322 | /* Link this compilation unit into the compilation unit tree. */ |
4323 | per_cu->cu = cu; | |
4324 | cu->per_cu = per_cu; | |
98bfdba5 PA |
4325 | |
4326 | /* Link this CU into read_in_chain. */ | |
4327 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
4328 | dwarf2_per_objfile->read_in_chain = per_cu; | |
4329 | } | |
4330 | else | |
4331 | { | |
4332 | cu = per_cu->cu; | |
4333 | info_ptr += cu->header.first_die_offset; | |
4334 | } | |
e142c38c | 4335 | |
93311388 | 4336 | cu->dies = read_comp_unit (info_ptr, cu); |
10b3939b DJ |
4337 | |
4338 | /* We try not to read any attributes in this function, because not | |
4339 | all objfiles needed for references have been loaded yet, and symbol | |
4340 | table processing isn't initialized. But we have to set the CU language, | |
4341 | or we won't be able to build types correctly. */ | |
4342 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
4343 | if (attr) | |
4344 | set_cu_language (DW_UNSND (attr), cu); | |
4345 | else | |
4346 | set_cu_language (language_minimal, cu); | |
4347 | ||
a6c727b2 DJ |
4348 | /* Similarly, if we do not read the producer, we can not apply |
4349 | producer-specific interpretation. */ | |
4350 | attr = dwarf2_attr (cu->dies, DW_AT_producer, cu); | |
4351 | if (attr) | |
4352 | cu->producer = DW_STRING (attr); | |
4353 | ||
98bfdba5 PA |
4354 | if (read_cu) |
4355 | { | |
4356 | do_cleanups (free_abbrevs_cleanup); | |
e142c38c | 4357 | |
98bfdba5 PA |
4358 | /* We've successfully allocated this compilation unit. Let our |
4359 | caller clean it up when finished with it. */ | |
4360 | discard_cleanups (free_cu_cleanup); | |
4361 | } | |
10b3939b DJ |
4362 | } |
4363 | ||
3da10d80 KS |
4364 | /* Add a DIE to the delayed physname list. */ |
4365 | ||
4366 | static void | |
4367 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
4368 | const char *name, struct die_info *die, | |
4369 | struct dwarf2_cu *cu) | |
4370 | { | |
4371 | struct delayed_method_info mi; | |
4372 | mi.type = type; | |
4373 | mi.fnfield_index = fnfield_index; | |
4374 | mi.index = index; | |
4375 | mi.name = name; | |
4376 | mi.die = die; | |
4377 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
4378 | } | |
4379 | ||
4380 | /* A cleanup for freeing the delayed method list. */ | |
4381 | ||
4382 | static void | |
4383 | free_delayed_list (void *ptr) | |
4384 | { | |
4385 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
4386 | if (cu->method_list != NULL) | |
4387 | { | |
4388 | VEC_free (delayed_method_info, cu->method_list); | |
4389 | cu->method_list = NULL; | |
4390 | } | |
4391 | } | |
4392 | ||
4393 | /* Compute the physnames of any methods on the CU's method list. | |
4394 | ||
4395 | The computation of method physnames is delayed in order to avoid the | |
4396 | (bad) condition that one of the method's formal parameters is of an as yet | |
4397 | incomplete type. */ | |
4398 | ||
4399 | static void | |
4400 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
4401 | { | |
4402 | int i; | |
4403 | struct delayed_method_info *mi; | |
4404 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
4405 | { | |
4406 | char *physname; | |
4407 | struct fn_fieldlist *fn_flp | |
4408 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
4409 | physname = (char *) dwarf2_physname ((char *) mi->name, mi->die, cu); | |
4410 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; | |
4411 | } | |
4412 | } | |
4413 | ||
10b3939b DJ |
4414 | /* Generate full symbol information for PST and CU, whose DIEs have |
4415 | already been loaded into memory. */ | |
4416 | ||
4417 | static void | |
4418 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
4419 | { | |
10b3939b | 4420 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 4421 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
4422 | CORE_ADDR lowpc, highpc; |
4423 | struct symtab *symtab; | |
3da10d80 | 4424 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b DJ |
4425 | CORE_ADDR baseaddr; |
4426 | ||
4427 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
4428 | ||
10b3939b DJ |
4429 | buildsym_init (); |
4430 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 4431 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
4432 | |
4433 | cu->list_in_scope = &file_symbols; | |
c906108c | 4434 | |
d85a05f0 | 4435 | dwarf2_find_base_address (cu->dies, cu); |
0d53c4c4 | 4436 | |
c906108c | 4437 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 4438 | process_die (cu->dies, cu); |
c906108c | 4439 | |
3da10d80 KS |
4440 | /* Now that we have processed all the DIEs in the CU, all the types |
4441 | should be complete, and it should now be safe to compute all of the | |
4442 | physnames. */ | |
4443 | compute_delayed_physnames (cu); | |
4444 | do_cleanups (delayed_list_cleanup); | |
4445 | ||
fae299cd DC |
4446 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
4447 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
4448 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 4449 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 4450 | |
613e1657 | 4451 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
4452 | |
4453 | /* Set symtab language to language from DW_AT_language. | |
4454 | If the compilation is from a C file generated by language preprocessors, | |
4455 | do not set the language if it was already deduced by start_subfile. */ | |
4456 | if (symtab != NULL | |
10b3939b | 4457 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 4458 | { |
10b3939b | 4459 | symtab->language = cu->language; |
c906108c | 4460 | } |
9291a0cd TT |
4461 | |
4462 | if (dwarf2_per_objfile->using_index) | |
4463 | per_cu->v.quick->symtab = symtab; | |
4464 | else | |
4465 | { | |
4466 | struct partial_symtab *pst = per_cu->v.psymtab; | |
4467 | pst->symtab = symtab; | |
4468 | pst->readin = 1; | |
4469 | } | |
c906108c SS |
4470 | |
4471 | do_cleanups (back_to); | |
4472 | } | |
4473 | ||
4474 | /* Process a die and its children. */ | |
4475 | ||
4476 | static void | |
e7c27a73 | 4477 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4478 | { |
4479 | switch (die->tag) | |
4480 | { | |
4481 | case DW_TAG_padding: | |
4482 | break; | |
4483 | case DW_TAG_compile_unit: | |
e7c27a73 | 4484 | read_file_scope (die, cu); |
c906108c | 4485 | break; |
348e048f DE |
4486 | case DW_TAG_type_unit: |
4487 | read_type_unit_scope (die, cu); | |
4488 | break; | |
c906108c | 4489 | case DW_TAG_subprogram: |
c906108c | 4490 | case DW_TAG_inlined_subroutine: |
edb3359d | 4491 | read_func_scope (die, cu); |
c906108c SS |
4492 | break; |
4493 | case DW_TAG_lexical_block: | |
14898363 L |
4494 | case DW_TAG_try_block: |
4495 | case DW_TAG_catch_block: | |
e7c27a73 | 4496 | read_lexical_block_scope (die, cu); |
c906108c SS |
4497 | break; |
4498 | case DW_TAG_class_type: | |
680b30c7 | 4499 | case DW_TAG_interface_type: |
c906108c SS |
4500 | case DW_TAG_structure_type: |
4501 | case DW_TAG_union_type: | |
134d01f1 | 4502 | process_structure_scope (die, cu); |
c906108c SS |
4503 | break; |
4504 | case DW_TAG_enumeration_type: | |
134d01f1 | 4505 | process_enumeration_scope (die, cu); |
c906108c | 4506 | break; |
134d01f1 | 4507 | |
f792889a DJ |
4508 | /* These dies have a type, but processing them does not create |
4509 | a symbol or recurse to process the children. Therefore we can | |
4510 | read them on-demand through read_type_die. */ | |
c906108c | 4511 | case DW_TAG_subroutine_type: |
72019c9c | 4512 | case DW_TAG_set_type: |
c906108c | 4513 | case DW_TAG_array_type: |
c906108c | 4514 | case DW_TAG_pointer_type: |
c906108c | 4515 | case DW_TAG_ptr_to_member_type: |
c906108c | 4516 | case DW_TAG_reference_type: |
c906108c | 4517 | case DW_TAG_string_type: |
c906108c | 4518 | break; |
134d01f1 | 4519 | |
c906108c | 4520 | case DW_TAG_base_type: |
a02abb62 | 4521 | case DW_TAG_subrange_type: |
cb249c71 | 4522 | case DW_TAG_typedef: |
134d01f1 DJ |
4523 | /* Add a typedef symbol for the type definition, if it has a |
4524 | DW_AT_name. */ | |
f792889a | 4525 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 4526 | break; |
c906108c | 4527 | case DW_TAG_common_block: |
e7c27a73 | 4528 | read_common_block (die, cu); |
c906108c SS |
4529 | break; |
4530 | case DW_TAG_common_inclusion: | |
4531 | break; | |
d9fa45fe | 4532 | case DW_TAG_namespace: |
63d06c5c | 4533 | processing_has_namespace_info = 1; |
e7c27a73 | 4534 | read_namespace (die, cu); |
d9fa45fe | 4535 | break; |
5d7cb8df | 4536 | case DW_TAG_module: |
f55ee35c | 4537 | processing_has_namespace_info = 1; |
5d7cb8df JK |
4538 | read_module (die, cu); |
4539 | break; | |
d9fa45fe DC |
4540 | case DW_TAG_imported_declaration: |
4541 | case DW_TAG_imported_module: | |
63d06c5c | 4542 | processing_has_namespace_info = 1; |
27aa8d6a SW |
4543 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
4544 | || cu->language != language_fortran)) | |
4545 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
4546 | dwarf_tag_name (die->tag)); | |
4547 | read_import_statement (die, cu); | |
d9fa45fe | 4548 | break; |
c906108c | 4549 | default: |
e7c27a73 | 4550 | new_symbol (die, NULL, cu); |
c906108c SS |
4551 | break; |
4552 | } | |
4553 | } | |
4554 | ||
94af9270 KS |
4555 | /* A helper function for dwarf2_compute_name which determines whether DIE |
4556 | needs to have the name of the scope prepended to the name listed in the | |
4557 | die. */ | |
4558 | ||
4559 | static int | |
4560 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
4561 | { | |
1c809c68 TT |
4562 | struct attribute *attr; |
4563 | ||
94af9270 KS |
4564 | switch (die->tag) |
4565 | { | |
4566 | case DW_TAG_namespace: | |
4567 | case DW_TAG_typedef: | |
4568 | case DW_TAG_class_type: | |
4569 | case DW_TAG_interface_type: | |
4570 | case DW_TAG_structure_type: | |
4571 | case DW_TAG_union_type: | |
4572 | case DW_TAG_enumeration_type: | |
4573 | case DW_TAG_enumerator: | |
4574 | case DW_TAG_subprogram: | |
4575 | case DW_TAG_member: | |
4576 | return 1; | |
4577 | ||
4578 | case DW_TAG_variable: | |
c2b0a229 | 4579 | case DW_TAG_constant: |
94af9270 KS |
4580 | /* We only need to prefix "globally" visible variables. These include |
4581 | any variable marked with DW_AT_external or any variable that | |
4582 | lives in a namespace. [Variables in anonymous namespaces | |
4583 | require prefixing, but they are not DW_AT_external.] */ | |
4584 | ||
4585 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
4586 | { | |
4587 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 4588 | |
94af9270 KS |
4589 | return die_needs_namespace (die_specification (die, &spec_cu), |
4590 | spec_cu); | |
4591 | } | |
4592 | ||
1c809c68 | 4593 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
4594 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
4595 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
4596 | return 0; |
4597 | /* A variable in a lexical block of some kind does not need a | |
4598 | namespace, even though in C++ such variables may be external | |
4599 | and have a mangled name. */ | |
4600 | if (die->parent->tag == DW_TAG_lexical_block | |
4601 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
4602 | || die->parent->tag == DW_TAG_catch_block |
4603 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
4604 | return 0; |
4605 | return 1; | |
94af9270 KS |
4606 | |
4607 | default: | |
4608 | return 0; | |
4609 | } | |
4610 | } | |
4611 | ||
98bfdba5 PA |
4612 | /* Retrieve the last character from a mem_file. */ |
4613 | ||
4614 | static void | |
4615 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
4616 | { | |
4617 | char *last_char_p = (char *) object; | |
4618 | ||
4619 | if (length > 0) | |
4620 | *last_char_p = buffer[length - 1]; | |
4621 | } | |
4622 | ||
94af9270 KS |
4623 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
4624 | compute the physname for the object, which include a method's | |
4625 | formal parameters (C++/Java) and return type (Java). | |
4626 | ||
af6b7be1 JB |
4627 | For Ada, return the DIE's linkage name rather than the fully qualified |
4628 | name. PHYSNAME is ignored.. | |
4629 | ||
94af9270 KS |
4630 | The result is allocated on the objfile_obstack and canonicalized. */ |
4631 | ||
4632 | static const char * | |
4633 | dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu, | |
4634 | int physname) | |
4635 | { | |
4636 | if (name == NULL) | |
4637 | name = dwarf2_name (die, cu); | |
4638 | ||
f55ee35c JK |
4639 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
4640 | compute it by typename_concat inside GDB. */ | |
4641 | if (cu->language == language_ada | |
4642 | || (cu->language == language_fortran && physname)) | |
4643 | { | |
4644 | /* For Ada unit, we prefer the linkage name over the name, as | |
4645 | the former contains the exported name, which the user expects | |
4646 | to be able to reference. Ideally, we want the user to be able | |
4647 | to reference this entity using either natural or linkage name, | |
4648 | but we haven't started looking at this enhancement yet. */ | |
4649 | struct attribute *attr; | |
4650 | ||
4651 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
4652 | if (attr == NULL) | |
4653 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
4654 | if (attr && DW_STRING (attr)) | |
4655 | return DW_STRING (attr); | |
4656 | } | |
4657 | ||
94af9270 KS |
4658 | /* These are the only languages we know how to qualify names in. */ |
4659 | if (name != NULL | |
f55ee35c JK |
4660 | && (cu->language == language_cplus || cu->language == language_java |
4661 | || cu->language == language_fortran)) | |
94af9270 KS |
4662 | { |
4663 | if (die_needs_namespace (die, cu)) | |
4664 | { | |
4665 | long length; | |
4666 | char *prefix; | |
4667 | struct ui_file *buf; | |
4668 | ||
4669 | prefix = determine_prefix (die, cu); | |
4670 | buf = mem_fileopen (); | |
4671 | if (*prefix != '\0') | |
4672 | { | |
f55ee35c JK |
4673 | char *prefixed_name = typename_concat (NULL, prefix, name, |
4674 | physname, cu); | |
9a619af0 | 4675 | |
94af9270 KS |
4676 | fputs_unfiltered (prefixed_name, buf); |
4677 | xfree (prefixed_name); | |
4678 | } | |
4679 | else | |
4680 | fputs_unfiltered (name ? name : "", buf); | |
4681 | ||
98bfdba5 PA |
4682 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
4683 | as children with DW_TAG_template_type_param or | |
4684 | DW_TAG_value_type_param. If the latter, add them to the name | |
4685 | here. If the name already has template parameters, then | |
4686 | skip this step; some versions of GCC emit both, and | |
4687 | it is more efficient to use the pre-computed name. | |
4688 | ||
4689 | Something to keep in mind about this process: it is very | |
4690 | unlikely, or in some cases downright impossible, to produce | |
4691 | something that will match the mangled name of a function. | |
4692 | If the definition of the function has the same debug info, | |
4693 | we should be able to match up with it anyway. But fallbacks | |
4694 | using the minimal symbol, for instance to find a method | |
4695 | implemented in a stripped copy of libstdc++, will not work. | |
4696 | If we do not have debug info for the definition, we will have to | |
4697 | match them up some other way. | |
4698 | ||
4699 | When we do name matching there is a related problem with function | |
4700 | templates; two instantiated function templates are allowed to | |
4701 | differ only by their return types, which we do not add here. */ | |
4702 | ||
4703 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
4704 | { | |
4705 | struct attribute *attr; | |
4706 | struct die_info *child; | |
4707 | int first = 1; | |
4708 | ||
4709 | die->building_fullname = 1; | |
4710 | ||
4711 | for (child = die->child; child != NULL; child = child->sibling) | |
4712 | { | |
4713 | struct type *type; | |
4714 | long value; | |
4715 | gdb_byte *bytes; | |
4716 | struct dwarf2_locexpr_baton *baton; | |
4717 | struct value *v; | |
4718 | ||
4719 | if (child->tag != DW_TAG_template_type_param | |
4720 | && child->tag != DW_TAG_template_value_param) | |
4721 | continue; | |
4722 | ||
4723 | if (first) | |
4724 | { | |
4725 | fputs_unfiltered ("<", buf); | |
4726 | first = 0; | |
4727 | } | |
4728 | else | |
4729 | fputs_unfiltered (", ", buf); | |
4730 | ||
4731 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
4732 | if (attr == NULL) | |
4733 | { | |
4734 | complaint (&symfile_complaints, | |
4735 | _("template parameter missing DW_AT_type")); | |
4736 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
4737 | continue; | |
4738 | } | |
4739 | type = die_type (child, cu); | |
4740 | ||
4741 | if (child->tag == DW_TAG_template_type_param) | |
4742 | { | |
4743 | c_print_type (type, "", buf, -1, 0); | |
4744 | continue; | |
4745 | } | |
4746 | ||
4747 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
4748 | if (attr == NULL) | |
4749 | { | |
4750 | complaint (&symfile_complaints, | |
4751 | _("template parameter missing DW_AT_const_value")); | |
4752 | fputs_unfiltered ("UNKNOWN_VALUE", buf); | |
4753 | continue; | |
4754 | } | |
4755 | ||
4756 | dwarf2_const_value_attr (attr, type, name, | |
4757 | &cu->comp_unit_obstack, cu, | |
4758 | &value, &bytes, &baton); | |
4759 | ||
4760 | if (TYPE_NOSIGN (type)) | |
4761 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
4762 | changed, this can use value_print instead. */ | |
4763 | c_printchar (value, type, buf); | |
4764 | else | |
4765 | { | |
4766 | struct value_print_options opts; | |
4767 | ||
4768 | if (baton != NULL) | |
4769 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
4770 | baton->data, | |
4771 | baton->size, | |
4772 | baton->per_cu); | |
4773 | else if (bytes != NULL) | |
4774 | { | |
4775 | v = allocate_value (type); | |
4776 | memcpy (value_contents_writeable (v), bytes, | |
4777 | TYPE_LENGTH (type)); | |
4778 | } | |
4779 | else | |
4780 | v = value_from_longest (type, value); | |
4781 | ||
4782 | /* Specify decimal so that we do not depend on the radix. */ | |
4783 | get_formatted_print_options (&opts, 'd'); | |
4784 | opts.raw = 1; | |
4785 | value_print (v, buf, &opts); | |
4786 | release_value (v); | |
4787 | value_free (v); | |
4788 | } | |
4789 | } | |
4790 | ||
4791 | die->building_fullname = 0; | |
4792 | ||
4793 | if (!first) | |
4794 | { | |
4795 | /* Close the argument list, with a space if necessary | |
4796 | (nested templates). */ | |
4797 | char last_char = '\0'; | |
4798 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
4799 | if (last_char == '>') | |
4800 | fputs_unfiltered (" >", buf); | |
4801 | else | |
4802 | fputs_unfiltered (">", buf); | |
4803 | } | |
4804 | } | |
4805 | ||
94af9270 KS |
4806 | /* For Java and C++ methods, append formal parameter type |
4807 | information, if PHYSNAME. */ | |
6e70227d | 4808 | |
94af9270 KS |
4809 | if (physname && die->tag == DW_TAG_subprogram |
4810 | && (cu->language == language_cplus | |
4811 | || cu->language == language_java)) | |
4812 | { | |
4813 | struct type *type = read_type_die (die, cu); | |
4814 | ||
4815 | c_type_print_args (type, buf, 0, cu->language); | |
4816 | ||
4817 | if (cu->language == language_java) | |
4818 | { | |
4819 | /* For java, we must append the return type to method | |
4820 | names. */ | |
4821 | if (die->tag == DW_TAG_subprogram) | |
4822 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
4823 | 0, 0); | |
4824 | } | |
4825 | else if (cu->language == language_cplus) | |
4826 | { | |
60430eff DJ |
4827 | /* Assume that an artificial first parameter is |
4828 | "this", but do not crash if it is not. RealView | |
4829 | marks unnamed (and thus unused) parameters as | |
4830 | artificial; there is no way to differentiate | |
4831 | the two cases. */ | |
94af9270 KS |
4832 | if (TYPE_NFIELDS (type) > 0 |
4833 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 4834 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
94af9270 KS |
4835 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)))) |
4836 | fputs_unfiltered (" const", buf); | |
4837 | } | |
4838 | } | |
4839 | ||
4840 | name = ui_file_obsavestring (buf, &cu->objfile->objfile_obstack, | |
4841 | &length); | |
4842 | ui_file_delete (buf); | |
4843 | ||
4844 | if (cu->language == language_cplus) | |
4845 | { | |
4846 | char *cname | |
4847 | = dwarf2_canonicalize_name (name, cu, | |
4848 | &cu->objfile->objfile_obstack); | |
9a619af0 | 4849 | |
94af9270 KS |
4850 | if (cname != NULL) |
4851 | name = cname; | |
4852 | } | |
4853 | } | |
4854 | } | |
4855 | ||
4856 | return name; | |
4857 | } | |
4858 | ||
0114d602 DJ |
4859 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
4860 | If scope qualifiers are appropriate they will be added. The result | |
4861 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
4862 | not have a name. NAME may either be from a previous call to |
4863 | dwarf2_name or NULL. | |
4864 | ||
4865 | The output string will be canonicalized (if C++/Java). */ | |
0114d602 DJ |
4866 | |
4867 | static const char * | |
94af9270 | 4868 | dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 4869 | { |
94af9270 KS |
4870 | return dwarf2_compute_name (name, die, cu, 0); |
4871 | } | |
0114d602 | 4872 | |
94af9270 KS |
4873 | /* Construct a physname for the given DIE in CU. NAME may either be |
4874 | from a previous call to dwarf2_name or NULL. The result will be | |
4875 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
4876 | name. | |
0114d602 | 4877 | |
94af9270 | 4878 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 4879 | |
94af9270 KS |
4880 | static const char * |
4881 | dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu) | |
4882 | { | |
4883 | return dwarf2_compute_name (name, die, cu, 1); | |
0114d602 DJ |
4884 | } |
4885 | ||
27aa8d6a SW |
4886 | /* Read the import statement specified by the given die and record it. */ |
4887 | ||
4888 | static void | |
4889 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
4890 | { | |
4891 | struct attribute *import_attr; | |
4892 | struct die_info *imported_die; | |
de4affc9 | 4893 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 4894 | const char *imported_name; |
794684b6 | 4895 | const char *imported_name_prefix; |
13387711 SW |
4896 | const char *canonical_name; |
4897 | const char *import_alias; | |
4898 | const char *imported_declaration = NULL; | |
794684b6 | 4899 | const char *import_prefix; |
13387711 SW |
4900 | |
4901 | char *temp; | |
27aa8d6a SW |
4902 | |
4903 | import_attr = dwarf2_attr (die, DW_AT_import, cu); | |
4904 | if (import_attr == NULL) | |
4905 | { | |
4906 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
4907 | dwarf_tag_name (die->tag)); | |
4908 | return; | |
4909 | } | |
4910 | ||
de4affc9 CC |
4911 | imported_cu = cu; |
4912 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
4913 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
4914 | if (imported_name == NULL) |
4915 | { | |
4916 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
4917 | ||
4918 | The import in the following code: | |
4919 | namespace A | |
4920 | { | |
4921 | typedef int B; | |
4922 | } | |
4923 | ||
4924 | int main () | |
4925 | { | |
4926 | using A::B; | |
4927 | B b; | |
4928 | return b; | |
4929 | } | |
4930 | ||
4931 | ... | |
4932 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
4933 | <52> DW_AT_decl_file : 1 | |
4934 | <53> DW_AT_decl_line : 6 | |
4935 | <54> DW_AT_import : <0x75> | |
4936 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
4937 | <59> DW_AT_name : B | |
4938 | <5b> DW_AT_decl_file : 1 | |
4939 | <5c> DW_AT_decl_line : 2 | |
4940 | <5d> DW_AT_type : <0x6e> | |
4941 | ... | |
4942 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
4943 | <76> DW_AT_byte_size : 4 | |
4944 | <77> DW_AT_encoding : 5 (signed) | |
4945 | ||
4946 | imports the wrong die ( 0x75 instead of 0x58 ). | |
4947 | This case will be ignored until the gcc bug is fixed. */ | |
4948 | return; | |
4949 | } | |
4950 | ||
82856980 SW |
4951 | /* Figure out the local name after import. */ |
4952 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 4953 | |
794684b6 SW |
4954 | /* Figure out where the statement is being imported to. */ |
4955 | import_prefix = determine_prefix (die, cu); | |
4956 | ||
4957 | /* Figure out what the scope of the imported die is and prepend it | |
4958 | to the name of the imported die. */ | |
de4affc9 | 4959 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 4960 | |
f55ee35c JK |
4961 | if (imported_die->tag != DW_TAG_namespace |
4962 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 4963 | { |
13387711 SW |
4964 | imported_declaration = imported_name; |
4965 | canonical_name = imported_name_prefix; | |
794684b6 | 4966 | } |
13387711 | 4967 | else if (strlen (imported_name_prefix) > 0) |
794684b6 | 4968 | { |
13387711 SW |
4969 | temp = alloca (strlen (imported_name_prefix) |
4970 | + 2 + strlen (imported_name) + 1); | |
4971 | strcpy (temp, imported_name_prefix); | |
4972 | strcat (temp, "::"); | |
4973 | strcat (temp, imported_name); | |
4974 | canonical_name = temp; | |
794684b6 | 4975 | } |
13387711 SW |
4976 | else |
4977 | canonical_name = imported_name; | |
794684b6 | 4978 | |
c0cc3a76 SW |
4979 | cp_add_using_directive (import_prefix, |
4980 | canonical_name, | |
4981 | import_alias, | |
13387711 | 4982 | imported_declaration, |
c0cc3a76 | 4983 | &cu->objfile->objfile_obstack); |
27aa8d6a SW |
4984 | } |
4985 | ||
5fb290d7 | 4986 | static void |
e142c38c | 4987 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 4988 | { |
e142c38c | 4989 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
4990 | } |
4991 | ||
cb1df416 DJ |
4992 | static void |
4993 | free_cu_line_header (void *arg) | |
4994 | { | |
4995 | struct dwarf2_cu *cu = arg; | |
4996 | ||
4997 | free_line_header (cu->line_header); | |
4998 | cu->line_header = NULL; | |
4999 | } | |
5000 | ||
9291a0cd TT |
5001 | static void |
5002 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
5003 | char **name, char **comp_dir) | |
5004 | { | |
5005 | struct attribute *attr; | |
5006 | ||
5007 | *name = NULL; | |
5008 | *comp_dir = NULL; | |
5009 | ||
5010 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
5011 | is not a source language identifier. */ | |
5012 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
5013 | if (attr) | |
5014 | { | |
5015 | *name = DW_STRING (attr); | |
5016 | } | |
5017 | ||
5018 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
5019 | if (attr) | |
5020 | *comp_dir = DW_STRING (attr); | |
5021 | else if (*name != NULL && IS_ABSOLUTE_PATH (*name)) | |
5022 | { | |
5023 | *comp_dir = ldirname (*name); | |
5024 | if (*comp_dir != NULL) | |
5025 | make_cleanup (xfree, *comp_dir); | |
5026 | } | |
5027 | if (*comp_dir != NULL) | |
5028 | { | |
5029 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
5030 | directory, get rid of it. */ | |
5031 | char *cp = strchr (*comp_dir, ':'); | |
5032 | ||
5033 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
5034 | *comp_dir = cp + 1; | |
5035 | } | |
5036 | ||
5037 | if (*name == NULL) | |
5038 | *name = "<unknown>"; | |
5039 | } | |
5040 | ||
c906108c | 5041 | static void |
e7c27a73 | 5042 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5043 | { |
e7c27a73 | 5044 | struct objfile *objfile = cu->objfile; |
debd256d | 5045 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 5046 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
5047 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
5048 | struct attribute *attr; | |
e1024ff1 | 5049 | char *name = NULL; |
c906108c SS |
5050 | char *comp_dir = NULL; |
5051 | struct die_info *child_die; | |
5052 | bfd *abfd = objfile->obfd; | |
debd256d | 5053 | struct line_header *line_header = 0; |
e142c38c | 5054 | CORE_ADDR baseaddr; |
6e70227d | 5055 | |
e142c38c | 5056 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 5057 | |
fae299cd | 5058 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
5059 | |
5060 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
5061 | from finish_block. */ | |
2acceee2 | 5062 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
5063 | lowpc = highpc; |
5064 | lowpc += baseaddr; | |
5065 | highpc += baseaddr; | |
5066 | ||
9291a0cd | 5067 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 5068 | |
e142c38c | 5069 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
5070 | if (attr) |
5071 | { | |
e142c38c | 5072 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
5073 | } |
5074 | ||
b0f35d58 | 5075 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
6e70227d | 5076 | if (attr) |
b0f35d58 | 5077 | cu->producer = DW_STRING (attr); |
303b6f5d | 5078 | |
c906108c SS |
5079 | /* We assume that we're processing GCC output. */ |
5080 | processing_gcc_compilation = 2; | |
c906108c | 5081 | |
df8a16a1 DJ |
5082 | processing_has_namespace_info = 0; |
5083 | ||
c906108c SS |
5084 | start_symtab (name, comp_dir, lowpc); |
5085 | record_debugformat ("DWARF 2"); | |
303b6f5d | 5086 | record_producer (cu->producer); |
c906108c | 5087 | |
e142c38c | 5088 | initialize_cu_func_list (cu); |
c906108c | 5089 | |
cb1df416 DJ |
5090 | /* Decode line number information if present. We do this before |
5091 | processing child DIEs, so that the line header table is available | |
5092 | for DW_AT_decl_file. */ | |
e142c38c | 5093 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
5094 | if (attr) |
5095 | { | |
debd256d | 5096 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 5097 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
5098 | if (line_header) |
5099 | { | |
cb1df416 DJ |
5100 | cu->line_header = line_header; |
5101 | make_cleanup (free_cu_line_header, cu); | |
aaa75496 | 5102 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 5103 | } |
5fb290d7 | 5104 | } |
debd256d | 5105 | |
cb1df416 DJ |
5106 | /* Process all dies in compilation unit. */ |
5107 | if (die->child != NULL) | |
5108 | { | |
5109 | child_die = die->child; | |
5110 | while (child_die && child_die->tag) | |
5111 | { | |
5112 | process_die (child_die, cu); | |
5113 | child_die = sibling_die (child_die); | |
5114 | } | |
5115 | } | |
5116 | ||
2e276125 JB |
5117 | /* Decode macro information, if present. Dwarf 2 macro information |
5118 | refers to information in the line number info statement program | |
5119 | header, so we can only read it if we've read the header | |
5120 | successfully. */ | |
e142c38c | 5121 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 5122 | if (attr && line_header) |
2e276125 JB |
5123 | { |
5124 | unsigned int macro_offset = DW_UNSND (attr); | |
9a619af0 | 5125 | |
2e276125 | 5126 | dwarf_decode_macros (line_header, macro_offset, |
e7c27a73 | 5127 | comp_dir, abfd, cu); |
2e276125 | 5128 | } |
debd256d | 5129 | do_cleanups (back_to); |
5fb290d7 DJ |
5130 | } |
5131 | ||
348e048f DE |
5132 | /* For TUs we want to skip the first top level sibling if it's not the |
5133 | actual type being defined by this TU. In this case the first top | |
5134 | level sibling is there to provide context only. */ | |
5135 | ||
5136 | static void | |
5137 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
5138 | { | |
5139 | struct objfile *objfile = cu->objfile; | |
5140 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
5141 | CORE_ADDR lowpc; | |
5142 | struct attribute *attr; | |
5143 | char *name = NULL; | |
5144 | char *comp_dir = NULL; | |
5145 | struct die_info *child_die; | |
5146 | bfd *abfd = objfile->obfd; | |
348e048f DE |
5147 | |
5148 | /* start_symtab needs a low pc, but we don't really have one. | |
5149 | Do what read_file_scope would do in the absence of such info. */ | |
5150 | lowpc = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5151 | ||
5152 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
5153 | is not a source language identifier. */ | |
5154 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
5155 | if (attr) | |
5156 | name = DW_STRING (attr); | |
5157 | ||
5158 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
5159 | if (attr) | |
5160 | comp_dir = DW_STRING (attr); | |
5161 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
5162 | { | |
5163 | comp_dir = ldirname (name); | |
5164 | if (comp_dir != NULL) | |
5165 | make_cleanup (xfree, comp_dir); | |
5166 | } | |
5167 | ||
5168 | if (name == NULL) | |
5169 | name = "<unknown>"; | |
5170 | ||
5171 | attr = dwarf2_attr (die, DW_AT_language, cu); | |
5172 | if (attr) | |
5173 | set_cu_language (DW_UNSND (attr), cu); | |
5174 | ||
5175 | /* This isn't technically needed today. It is done for symmetry | |
5176 | with read_file_scope. */ | |
5177 | attr = dwarf2_attr (die, DW_AT_producer, cu); | |
6e70227d | 5178 | if (attr) |
348e048f DE |
5179 | cu->producer = DW_STRING (attr); |
5180 | ||
5181 | /* We assume that we're processing GCC output. */ | |
5182 | processing_gcc_compilation = 2; | |
5183 | ||
5184 | processing_has_namespace_info = 0; | |
5185 | ||
5186 | start_symtab (name, comp_dir, lowpc); | |
5187 | record_debugformat ("DWARF 2"); | |
5188 | record_producer (cu->producer); | |
5189 | ||
5190 | /* Process the dies in the type unit. */ | |
5191 | if (die->child == NULL) | |
5192 | { | |
5193 | dump_die_for_error (die); | |
5194 | error (_("Dwarf Error: Missing children for type unit [in module %s]"), | |
5195 | bfd_get_filename (abfd)); | |
5196 | } | |
5197 | ||
5198 | child_die = die->child; | |
5199 | ||
5200 | while (child_die && child_die->tag) | |
5201 | { | |
5202 | process_die (child_die, cu); | |
5203 | ||
5204 | child_die = sibling_die (child_die); | |
5205 | } | |
5206 | ||
5207 | do_cleanups (back_to); | |
5208 | } | |
5209 | ||
5fb290d7 | 5210 | static void |
e142c38c DJ |
5211 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
5212 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
5213 | { |
5214 | struct function_range *thisfn; | |
5215 | ||
5216 | thisfn = (struct function_range *) | |
7b5a2f43 | 5217 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
5218 | thisfn->name = name; |
5219 | thisfn->lowpc = lowpc; | |
5220 | thisfn->highpc = highpc; | |
5221 | thisfn->seen_line = 0; | |
5222 | thisfn->next = NULL; | |
5223 | ||
e142c38c DJ |
5224 | if (cu->last_fn == NULL) |
5225 | cu->first_fn = thisfn; | |
5fb290d7 | 5226 | else |
e142c38c | 5227 | cu->last_fn->next = thisfn; |
5fb290d7 | 5228 | |
e142c38c | 5229 | cu->last_fn = thisfn; |
c906108c SS |
5230 | } |
5231 | ||
d389af10 JK |
5232 | /* qsort helper for inherit_abstract_dies. */ |
5233 | ||
5234 | static int | |
5235 | unsigned_int_compar (const void *ap, const void *bp) | |
5236 | { | |
5237 | unsigned int a = *(unsigned int *) ap; | |
5238 | unsigned int b = *(unsigned int *) bp; | |
5239 | ||
5240 | return (a > b) - (b > a); | |
5241 | } | |
5242 | ||
5243 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
5244 | Inherit only the children of the DW_AT_abstract_origin DIE not being already | |
5245 | referenced by DW_AT_abstract_origin from the children of the current DIE. */ | |
5246 | ||
5247 | static void | |
5248 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
5249 | { | |
5250 | struct die_info *child_die; | |
5251 | unsigned die_children_count; | |
5252 | /* CU offsets which were referenced by children of the current DIE. */ | |
5253 | unsigned *offsets; | |
5254 | unsigned *offsets_end, *offsetp; | |
5255 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ | |
5256 | struct die_info *origin_die; | |
5257 | /* Iterator of the ORIGIN_DIE children. */ | |
5258 | struct die_info *origin_child_die; | |
5259 | struct cleanup *cleanups; | |
5260 | struct attribute *attr; | |
cd02d79d PA |
5261 | struct dwarf2_cu *origin_cu; |
5262 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
5263 | |
5264 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
5265 | if (!attr) | |
5266 | return; | |
5267 | ||
cd02d79d PA |
5268 | /* Note that following die references may follow to a die in a |
5269 | different cu. */ | |
5270 | ||
5271 | origin_cu = cu; | |
5272 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
5273 | ||
5274 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
5275 | symbols in. */ | |
5276 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
5277 | origin_cu->list_in_scope = cu->list_in_scope; | |
5278 | ||
edb3359d DJ |
5279 | if (die->tag != origin_die->tag |
5280 | && !(die->tag == DW_TAG_inlined_subroutine | |
5281 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
5282 | complaint (&symfile_complaints, |
5283 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
5284 | die->offset, origin_die->offset); | |
5285 | ||
5286 | child_die = die->child; | |
5287 | die_children_count = 0; | |
5288 | while (child_die && child_die->tag) | |
5289 | { | |
5290 | child_die = sibling_die (child_die); | |
5291 | die_children_count++; | |
5292 | } | |
5293 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
5294 | cleanups = make_cleanup (xfree, offsets); | |
5295 | ||
5296 | offsets_end = offsets; | |
5297 | child_die = die->child; | |
5298 | while (child_die && child_die->tag) | |
5299 | { | |
c38f313d DJ |
5300 | /* For each CHILD_DIE, find the corresponding child of |
5301 | ORIGIN_DIE. If there is more than one layer of | |
5302 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
5303 | but GCC versions at least through 4.4 generate this (GCC PR | |
5304 | 40573). */ | |
5305 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 5306 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 5307 | |
c38f313d DJ |
5308 | while (1) |
5309 | { | |
cd02d79d PA |
5310 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
5311 | child_origin_cu); | |
c38f313d DJ |
5312 | if (attr == NULL) |
5313 | break; | |
cd02d79d PA |
5314 | child_origin_die = follow_die_ref (child_origin_die, attr, |
5315 | &child_origin_cu); | |
c38f313d DJ |
5316 | } |
5317 | ||
d389af10 JK |
5318 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
5319 | counterpart may exist. */ | |
c38f313d | 5320 | if (child_origin_die != child_die) |
d389af10 | 5321 | { |
edb3359d DJ |
5322 | if (child_die->tag != child_origin_die->tag |
5323 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
5324 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
5325 | complaint (&symfile_complaints, |
5326 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
5327 | "different tags"), child_die->offset, | |
5328 | child_origin_die->offset); | |
c38f313d DJ |
5329 | if (child_origin_die->parent != origin_die) |
5330 | complaint (&symfile_complaints, | |
5331 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
5332 | "different parents"), child_die->offset, | |
5333 | child_origin_die->offset); | |
5334 | else | |
5335 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
5336 | } |
5337 | child_die = sibling_die (child_die); | |
5338 | } | |
5339 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
5340 | unsigned_int_compar); | |
5341 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
5342 | if (offsetp[-1] == *offsetp) | |
5343 | complaint (&symfile_complaints, _("Multiple children of DIE 0x%x refer " | |
5344 | "to DIE 0x%x as their abstract origin"), | |
5345 | die->offset, *offsetp); | |
5346 | ||
5347 | offsetp = offsets; | |
5348 | origin_child_die = origin_die->child; | |
5349 | while (origin_child_die && origin_child_die->tag) | |
5350 | { | |
5351 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
5352 | while (offsetp < offsets_end && *offsetp < origin_child_die->offset) | |
5353 | offsetp++; | |
5354 | if (offsetp >= offsets_end || *offsetp > origin_child_die->offset) | |
5355 | { | |
5356 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 5357 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
5358 | } |
5359 | origin_child_die = sibling_die (origin_child_die); | |
5360 | } | |
cd02d79d | 5361 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
5362 | |
5363 | do_cleanups (cleanups); | |
5364 | } | |
5365 | ||
c906108c | 5366 | static void |
e7c27a73 | 5367 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5368 | { |
e7c27a73 | 5369 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 5370 | struct context_stack *new; |
c906108c SS |
5371 | CORE_ADDR lowpc; |
5372 | CORE_ADDR highpc; | |
5373 | struct die_info *child_die; | |
edb3359d | 5374 | struct attribute *attr, *call_line, *call_file; |
c906108c | 5375 | char *name; |
e142c38c | 5376 | CORE_ADDR baseaddr; |
801e3a5b | 5377 | struct block *block; |
edb3359d | 5378 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
5379 | VEC (symbolp) *template_args = NULL; |
5380 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
5381 | |
5382 | if (inlined_func) | |
5383 | { | |
5384 | /* If we do not have call site information, we can't show the | |
5385 | caller of this inlined function. That's too confusing, so | |
5386 | only use the scope for local variables. */ | |
5387 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
5388 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
5389 | if (call_line == NULL || call_file == NULL) | |
5390 | { | |
5391 | read_lexical_block_scope (die, cu); | |
5392 | return; | |
5393 | } | |
5394 | } | |
c906108c | 5395 | |
e142c38c DJ |
5396 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
5397 | ||
94af9270 | 5398 | name = dwarf2_name (die, cu); |
c906108c | 5399 | |
e8d05480 JB |
5400 | /* Ignore functions with missing or empty names. These are actually |
5401 | illegal according to the DWARF standard. */ | |
5402 | if (name == NULL) | |
5403 | { | |
5404 | complaint (&symfile_complaints, | |
5405 | _("missing name for subprogram DIE at %d"), die->offset); | |
5406 | return; | |
5407 | } | |
5408 | ||
5409 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
5410 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
5411 | { | |
ae4d0c03 PM |
5412 | attr = dwarf2_attr (die, DW_AT_external, cu); |
5413 | if (!attr || !DW_UNSND (attr)) | |
5414 | complaint (&symfile_complaints, | |
5415 | _("cannot get low and high bounds for subprogram DIE at %d"), | |
5416 | die->offset); | |
e8d05480 JB |
5417 | return; |
5418 | } | |
c906108c SS |
5419 | |
5420 | lowpc += baseaddr; | |
5421 | highpc += baseaddr; | |
5422 | ||
5fb290d7 | 5423 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 5424 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 5425 | |
34eaf542 TT |
5426 | /* If we have any template arguments, then we must allocate a |
5427 | different sort of symbol. */ | |
5428 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
5429 | { | |
5430 | if (child_die->tag == DW_TAG_template_type_param | |
5431 | || child_die->tag == DW_TAG_template_value_param) | |
5432 | { | |
5433 | templ_func = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5434 | struct template_symbol); | |
5435 | templ_func->base.is_cplus_template_function = 1; | |
5436 | break; | |
5437 | } | |
5438 | } | |
5439 | ||
c906108c | 5440 | new = push_context (0, lowpc); |
34eaf542 TT |
5441 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
5442 | (struct symbol *) templ_func); | |
4c2df51b | 5443 | |
4cecd739 DJ |
5444 | /* If there is a location expression for DW_AT_frame_base, record |
5445 | it. */ | |
e142c38c | 5446 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 5447 | if (attr) |
c034e007 AC |
5448 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
5449 | expression is being recorded directly in the function's symbol | |
5450 | and not in a separate frame-base object. I guess this hack is | |
5451 | to avoid adding some sort of frame-base adjunct/annex to the | |
5452 | function's symbol :-(. The problem with doing this is that it | |
5453 | results in a function symbol with a location expression that | |
5454 | has nothing to do with the location of the function, ouch! The | |
5455 | relationship should be: a function's symbol has-a frame base; a | |
5456 | frame-base has-a location expression. */ | |
e7c27a73 | 5457 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 5458 | |
e142c38c | 5459 | cu->list_in_scope = &local_symbols; |
c906108c | 5460 | |
639d11d3 | 5461 | if (die->child != NULL) |
c906108c | 5462 | { |
639d11d3 | 5463 | child_die = die->child; |
c906108c SS |
5464 | while (child_die && child_die->tag) |
5465 | { | |
34eaf542 TT |
5466 | if (child_die->tag == DW_TAG_template_type_param |
5467 | || child_die->tag == DW_TAG_template_value_param) | |
5468 | { | |
5469 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
5470 | ||
f1078f66 DJ |
5471 | if (arg != NULL) |
5472 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
5473 | } |
5474 | else | |
5475 | process_die (child_die, cu); | |
c906108c SS |
5476 | child_die = sibling_die (child_die); |
5477 | } | |
5478 | } | |
5479 | ||
d389af10 JK |
5480 | inherit_abstract_dies (die, cu); |
5481 | ||
4a811a97 UW |
5482 | /* If we have a DW_AT_specification, we might need to import using |
5483 | directives from the context of the specification DIE. See the | |
5484 | comment in determine_prefix. */ | |
5485 | if (cu->language == language_cplus | |
5486 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
5487 | { | |
5488 | struct dwarf2_cu *spec_cu = cu; | |
5489 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
5490 | ||
5491 | while (spec_die) | |
5492 | { | |
5493 | child_die = spec_die->child; | |
5494 | while (child_die && child_die->tag) | |
5495 | { | |
5496 | if (child_die->tag == DW_TAG_imported_module) | |
5497 | process_die (child_die, spec_cu); | |
5498 | child_die = sibling_die (child_die); | |
5499 | } | |
5500 | ||
5501 | /* In some cases, GCC generates specification DIEs that | |
5502 | themselves contain DW_AT_specification attributes. */ | |
5503 | spec_die = die_specification (spec_die, &spec_cu); | |
5504 | } | |
5505 | } | |
5506 | ||
c906108c SS |
5507 | new = pop_context (); |
5508 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
5509 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
5510 | lowpc, highpc, objfile); | |
5511 | ||
df8a16a1 | 5512 | /* For C++, set the block's scope. */ |
f55ee35c | 5513 | if (cu->language == language_cplus || cu->language == language_fortran) |
df8a16a1 | 5514 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, |
0114d602 | 5515 | determine_prefix (die, cu), |
df8a16a1 DJ |
5516 | processing_has_namespace_info); |
5517 | ||
801e3a5b JB |
5518 | /* If we have address ranges, record them. */ |
5519 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 5520 | |
34eaf542 TT |
5521 | /* Attach template arguments to function. */ |
5522 | if (! VEC_empty (symbolp, template_args)) | |
5523 | { | |
5524 | gdb_assert (templ_func != NULL); | |
5525 | ||
5526 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
5527 | templ_func->template_arguments | |
5528 | = obstack_alloc (&objfile->objfile_obstack, | |
5529 | (templ_func->n_template_arguments | |
5530 | * sizeof (struct symbol *))); | |
5531 | memcpy (templ_func->template_arguments, | |
5532 | VEC_address (symbolp, template_args), | |
5533 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
5534 | VEC_free (symbolp, template_args); | |
5535 | } | |
5536 | ||
208d8187 JB |
5537 | /* In C++, we can have functions nested inside functions (e.g., when |
5538 | a function declares a class that has methods). This means that | |
5539 | when we finish processing a function scope, we may need to go | |
5540 | back to building a containing block's symbol lists. */ | |
5541 | local_symbols = new->locals; | |
5542 | param_symbols = new->params; | |
27aa8d6a | 5543 | using_directives = new->using_directives; |
208d8187 | 5544 | |
921e78cf JB |
5545 | /* If we've finished processing a top-level function, subsequent |
5546 | symbols go in the file symbol list. */ | |
5547 | if (outermost_context_p ()) | |
e142c38c | 5548 | cu->list_in_scope = &file_symbols; |
c906108c SS |
5549 | } |
5550 | ||
5551 | /* Process all the DIES contained within a lexical block scope. Start | |
5552 | a new scope, process the dies, and then close the scope. */ | |
5553 | ||
5554 | static void | |
e7c27a73 | 5555 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5556 | { |
e7c27a73 | 5557 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 5558 | struct context_stack *new; |
c906108c SS |
5559 | CORE_ADDR lowpc, highpc; |
5560 | struct die_info *child_die; | |
e142c38c DJ |
5561 | CORE_ADDR baseaddr; |
5562 | ||
5563 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
5564 | |
5565 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
5566 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
5567 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 5568 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 5569 | describe ranges. */ |
d85a05f0 | 5570 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
5571 | return; |
5572 | lowpc += baseaddr; | |
5573 | highpc += baseaddr; | |
5574 | ||
5575 | push_context (0, lowpc); | |
639d11d3 | 5576 | if (die->child != NULL) |
c906108c | 5577 | { |
639d11d3 | 5578 | child_die = die->child; |
c906108c SS |
5579 | while (child_die && child_die->tag) |
5580 | { | |
e7c27a73 | 5581 | process_die (child_die, cu); |
c906108c SS |
5582 | child_die = sibling_die (child_die); |
5583 | } | |
5584 | } | |
5585 | new = pop_context (); | |
5586 | ||
8540c487 | 5587 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 5588 | { |
801e3a5b JB |
5589 | struct block *block |
5590 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
5591 | highpc, objfile); | |
5592 | ||
5593 | /* Note that recording ranges after traversing children, as we | |
5594 | do here, means that recording a parent's ranges entails | |
5595 | walking across all its children's ranges as they appear in | |
5596 | the address map, which is quadratic behavior. | |
5597 | ||
5598 | It would be nicer to record the parent's ranges before | |
5599 | traversing its children, simply overriding whatever you find | |
5600 | there. But since we don't even decide whether to create a | |
5601 | block until after we've traversed its children, that's hard | |
5602 | to do. */ | |
5603 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
5604 | } |
5605 | local_symbols = new->locals; | |
27aa8d6a | 5606 | using_directives = new->using_directives; |
c906108c SS |
5607 | } |
5608 | ||
43039443 | 5609 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
5610 | Return 1 if the attributes are present and valid, otherwise, return 0. |
5611 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
5612 | |
5613 | static int | |
5614 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
5615 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
5616 | struct partial_symtab *ranges_pst) | |
43039443 JK |
5617 | { |
5618 | struct objfile *objfile = cu->objfile; | |
5619 | struct comp_unit_head *cu_header = &cu->header; | |
5620 | bfd *obfd = objfile->obfd; | |
5621 | unsigned int addr_size = cu_header->addr_size; | |
5622 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
5623 | /* Base address selection entry. */ | |
5624 | CORE_ADDR base; | |
5625 | int found_base; | |
5626 | unsigned int dummy; | |
5627 | gdb_byte *buffer; | |
5628 | CORE_ADDR marker; | |
5629 | int low_set; | |
5630 | CORE_ADDR low = 0; | |
5631 | CORE_ADDR high = 0; | |
ff013f42 | 5632 | CORE_ADDR baseaddr; |
43039443 | 5633 | |
d00adf39 DE |
5634 | found_base = cu->base_known; |
5635 | base = cu->base_address; | |
43039443 | 5636 | |
be391dca | 5637 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 5638 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
5639 | { |
5640 | complaint (&symfile_complaints, | |
5641 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
5642 | offset); | |
5643 | return 0; | |
5644 | } | |
dce234bc | 5645 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
5646 | |
5647 | /* Read in the largest possible address. */ | |
5648 | marker = read_address (obfd, buffer, cu, &dummy); | |
5649 | if ((marker & mask) == mask) | |
5650 | { | |
5651 | /* If we found the largest possible address, then | |
5652 | read the base address. */ | |
5653 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
5654 | buffer += 2 * addr_size; | |
5655 | offset += 2 * addr_size; | |
5656 | found_base = 1; | |
5657 | } | |
5658 | ||
5659 | low_set = 0; | |
5660 | ||
e7030f15 | 5661 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 5662 | |
43039443 JK |
5663 | while (1) |
5664 | { | |
5665 | CORE_ADDR range_beginning, range_end; | |
5666 | ||
5667 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
5668 | buffer += addr_size; | |
5669 | range_end = read_address (obfd, buffer, cu, &dummy); | |
5670 | buffer += addr_size; | |
5671 | offset += 2 * addr_size; | |
5672 | ||
5673 | /* An end of list marker is a pair of zero addresses. */ | |
5674 | if (range_beginning == 0 && range_end == 0) | |
5675 | /* Found the end of list entry. */ | |
5676 | break; | |
5677 | ||
5678 | /* Each base address selection entry is a pair of 2 values. | |
5679 | The first is the largest possible address, the second is | |
5680 | the base address. Check for a base address here. */ | |
5681 | if ((range_beginning & mask) == mask) | |
5682 | { | |
5683 | /* If we found the largest possible address, then | |
5684 | read the base address. */ | |
5685 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
5686 | found_base = 1; | |
5687 | continue; | |
5688 | } | |
5689 | ||
5690 | if (!found_base) | |
5691 | { | |
5692 | /* We have no valid base address for the ranges | |
5693 | data. */ | |
5694 | complaint (&symfile_complaints, | |
5695 | _("Invalid .debug_ranges data (no base address)")); | |
5696 | return 0; | |
5697 | } | |
5698 | ||
5699 | range_beginning += base; | |
5700 | range_end += base; | |
5701 | ||
ff013f42 JK |
5702 | if (ranges_pst != NULL && range_beginning < range_end) |
5703 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
5704 | range_beginning + baseaddr, range_end - 1 + baseaddr, | |
5705 | ranges_pst); | |
5706 | ||
43039443 JK |
5707 | /* FIXME: This is recording everything as a low-high |
5708 | segment of consecutive addresses. We should have a | |
5709 | data structure for discontiguous block ranges | |
5710 | instead. */ | |
5711 | if (! low_set) | |
5712 | { | |
5713 | low = range_beginning; | |
5714 | high = range_end; | |
5715 | low_set = 1; | |
5716 | } | |
5717 | else | |
5718 | { | |
5719 | if (range_beginning < low) | |
5720 | low = range_beginning; | |
5721 | if (range_end > high) | |
5722 | high = range_end; | |
5723 | } | |
5724 | } | |
5725 | ||
5726 | if (! low_set) | |
5727 | /* If the first entry is an end-of-list marker, the range | |
5728 | describes an empty scope, i.e. no instructions. */ | |
5729 | return 0; | |
5730 | ||
5731 | if (low_return) | |
5732 | *low_return = low; | |
5733 | if (high_return) | |
5734 | *high_return = high; | |
5735 | return 1; | |
5736 | } | |
5737 | ||
af34e669 DJ |
5738 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
5739 | are present and valid, otherwise, return 0. Return -1 if the range is | |
5740 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 5741 | static int |
af34e669 | 5742 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
5743 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
5744 | struct partial_symtab *pst) | |
c906108c SS |
5745 | { |
5746 | struct attribute *attr; | |
af34e669 DJ |
5747 | CORE_ADDR low = 0; |
5748 | CORE_ADDR high = 0; | |
5749 | int ret = 0; | |
c906108c | 5750 | |
e142c38c | 5751 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 5752 | if (attr) |
af34e669 DJ |
5753 | { |
5754 | high = DW_ADDR (attr); | |
e142c38c | 5755 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
5756 | if (attr) |
5757 | low = DW_ADDR (attr); | |
5758 | else | |
5759 | /* Found high w/o low attribute. */ | |
5760 | return 0; | |
5761 | ||
5762 | /* Found consecutive range of addresses. */ | |
5763 | ret = 1; | |
5764 | } | |
c906108c | 5765 | else |
af34e669 | 5766 | { |
e142c38c | 5767 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
5768 | if (attr != NULL) |
5769 | { | |
af34e669 | 5770 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 5771 | .debug_ranges section. */ |
d85a05f0 | 5772 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, pst)) |
af34e669 | 5773 | return 0; |
43039443 | 5774 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
5775 | ret = -1; |
5776 | } | |
5777 | } | |
c906108c SS |
5778 | |
5779 | if (high < low) | |
5780 | return 0; | |
5781 | ||
5782 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
5783 | eliminate duplicate copies of functions and vtables and such. | |
5784 | The linker will arbitrarily choose one and discard the others. | |
5785 | The AT_*_pc values for such functions refer to local labels in | |
5786 | these sections. If the section from that file was discarded, the | |
5787 | labels are not in the output, so the relocs get a value of 0. | |
5788 | If this is a discarded function, mark the pc bounds as invalid, | |
5789 | so that GDB will ignore it. */ | |
72dca2f5 | 5790 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
5791 | return 0; |
5792 | ||
5793 | *lowpc = low; | |
5794 | *highpc = high; | |
af34e669 | 5795 | return ret; |
c906108c SS |
5796 | } |
5797 | ||
b084d499 JB |
5798 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
5799 | its low and high PC addresses. Do nothing if these addresses could not | |
5800 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
5801 | and HIGHPC to the high address if greater than HIGHPC. */ | |
5802 | ||
5803 | static void | |
5804 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
5805 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5806 | struct dwarf2_cu *cu) | |
5807 | { | |
5808 | CORE_ADDR low, high; | |
5809 | struct die_info *child = die->child; | |
5810 | ||
d85a05f0 | 5811 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
5812 | { |
5813 | *lowpc = min (*lowpc, low); | |
5814 | *highpc = max (*highpc, high); | |
5815 | } | |
5816 | ||
5817 | /* If the language does not allow nested subprograms (either inside | |
5818 | subprograms or lexical blocks), we're done. */ | |
5819 | if (cu->language != language_ada) | |
5820 | return; | |
6e70227d | 5821 | |
b084d499 JB |
5822 | /* Check all the children of the given DIE. If it contains nested |
5823 | subprograms, then check their pc bounds. Likewise, we need to | |
5824 | check lexical blocks as well, as they may also contain subprogram | |
5825 | definitions. */ | |
5826 | while (child && child->tag) | |
5827 | { | |
5828 | if (child->tag == DW_TAG_subprogram | |
5829 | || child->tag == DW_TAG_lexical_block) | |
5830 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
5831 | child = sibling_die (child); | |
5832 | } | |
5833 | } | |
5834 | ||
fae299cd DC |
5835 | /* Get the low and high pc's represented by the scope DIE, and store |
5836 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
5837 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
5838 | ||
5839 | static void | |
5840 | get_scope_pc_bounds (struct die_info *die, | |
5841 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5842 | struct dwarf2_cu *cu) | |
5843 | { | |
5844 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
5845 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
5846 | CORE_ADDR current_low, current_high; | |
5847 | ||
d85a05f0 | 5848 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
5849 | { |
5850 | best_low = current_low; | |
5851 | best_high = current_high; | |
5852 | } | |
5853 | else | |
5854 | { | |
5855 | struct die_info *child = die->child; | |
5856 | ||
5857 | while (child && child->tag) | |
5858 | { | |
5859 | switch (child->tag) { | |
5860 | case DW_TAG_subprogram: | |
b084d499 | 5861 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
5862 | break; |
5863 | case DW_TAG_namespace: | |
f55ee35c | 5864 | case DW_TAG_module: |
fae299cd DC |
5865 | /* FIXME: carlton/2004-01-16: Should we do this for |
5866 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
5867 | that current GCC's always emit the DIEs corresponding | |
5868 | to definitions of methods of classes as children of a | |
5869 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
5870 | the DIEs giving the declarations, which could be | |
5871 | anywhere). But I don't see any reason why the | |
5872 | standards says that they have to be there. */ | |
5873 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
5874 | ||
5875 | if (current_low != ((CORE_ADDR) -1)) | |
5876 | { | |
5877 | best_low = min (best_low, current_low); | |
5878 | best_high = max (best_high, current_high); | |
5879 | } | |
5880 | break; | |
5881 | default: | |
5882 | /* Ignore. */ | |
5883 | break; | |
5884 | } | |
5885 | ||
5886 | child = sibling_die (child); | |
5887 | } | |
5888 | } | |
5889 | ||
5890 | *lowpc = best_low; | |
5891 | *highpc = best_high; | |
5892 | } | |
5893 | ||
801e3a5b JB |
5894 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
5895 | in DIE. */ | |
5896 | static void | |
5897 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
5898 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
5899 | { | |
5900 | struct attribute *attr; | |
5901 | ||
5902 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); | |
5903 | if (attr) | |
5904 | { | |
5905 | CORE_ADDR high = DW_ADDR (attr); | |
9a619af0 | 5906 | |
801e3a5b JB |
5907 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
5908 | if (attr) | |
5909 | { | |
5910 | CORE_ADDR low = DW_ADDR (attr); | |
9a619af0 | 5911 | |
801e3a5b JB |
5912 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
5913 | } | |
5914 | } | |
5915 | ||
5916 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
5917 | if (attr) | |
5918 | { | |
5919 | bfd *obfd = cu->objfile->obfd; | |
5920 | ||
5921 | /* The value of the DW_AT_ranges attribute is the offset of the | |
5922 | address range list in the .debug_ranges section. */ | |
5923 | unsigned long offset = DW_UNSND (attr); | |
dce234bc | 5924 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
5925 | |
5926 | /* For some target architectures, but not others, the | |
5927 | read_address function sign-extends the addresses it returns. | |
5928 | To recognize base address selection entries, we need a | |
5929 | mask. */ | |
5930 | unsigned int addr_size = cu->header.addr_size; | |
5931 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
5932 | ||
5933 | /* The base address, to which the next pair is relative. Note | |
5934 | that this 'base' is a DWARF concept: most entries in a range | |
5935 | list are relative, to reduce the number of relocs against the | |
5936 | debugging information. This is separate from this function's | |
5937 | 'baseaddr' argument, which GDB uses to relocate debugging | |
5938 | information from a shared library based on the address at | |
5939 | which the library was loaded. */ | |
d00adf39 DE |
5940 | CORE_ADDR base = cu->base_address; |
5941 | int base_known = cu->base_known; | |
801e3a5b | 5942 | |
be391dca | 5943 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 5944 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
5945 | { |
5946 | complaint (&symfile_complaints, | |
5947 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
5948 | offset); | |
5949 | return; | |
5950 | } | |
5951 | ||
5952 | for (;;) | |
5953 | { | |
5954 | unsigned int bytes_read; | |
5955 | CORE_ADDR start, end; | |
5956 | ||
5957 | start = read_address (obfd, buffer, cu, &bytes_read); | |
5958 | buffer += bytes_read; | |
5959 | end = read_address (obfd, buffer, cu, &bytes_read); | |
5960 | buffer += bytes_read; | |
5961 | ||
5962 | /* Did we find the end of the range list? */ | |
5963 | if (start == 0 && end == 0) | |
5964 | break; | |
5965 | ||
5966 | /* Did we find a base address selection entry? */ | |
5967 | else if ((start & base_select_mask) == base_select_mask) | |
5968 | { | |
5969 | base = end; | |
5970 | base_known = 1; | |
5971 | } | |
5972 | ||
5973 | /* We found an ordinary address range. */ | |
5974 | else | |
5975 | { | |
5976 | if (!base_known) | |
5977 | { | |
5978 | complaint (&symfile_complaints, | |
5979 | _("Invalid .debug_ranges data (no base address)")); | |
5980 | return; | |
5981 | } | |
5982 | ||
6e70227d DE |
5983 | record_block_range (block, |
5984 | baseaddr + base + start, | |
801e3a5b JB |
5985 | baseaddr + base + end - 1); |
5986 | } | |
5987 | } | |
5988 | } | |
5989 | } | |
5990 | ||
c906108c SS |
5991 | /* Add an aggregate field to the field list. */ |
5992 | ||
5993 | static void | |
107d2387 | 5994 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 5995 | struct dwarf2_cu *cu) |
6e70227d | 5996 | { |
e7c27a73 | 5997 | struct objfile *objfile = cu->objfile; |
5e2b427d | 5998 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
5999 | struct nextfield *new_field; |
6000 | struct attribute *attr; | |
6001 | struct field *fp; | |
6002 | char *fieldname = ""; | |
6003 | ||
6004 | /* Allocate a new field list entry and link it in. */ | |
6005 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 6006 | make_cleanup (xfree, new_field); |
c906108c | 6007 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
6008 | |
6009 | if (die->tag == DW_TAG_inheritance) | |
6010 | { | |
6011 | new_field->next = fip->baseclasses; | |
6012 | fip->baseclasses = new_field; | |
6013 | } | |
6014 | else | |
6015 | { | |
6016 | new_field->next = fip->fields; | |
6017 | fip->fields = new_field; | |
6018 | } | |
c906108c SS |
6019 | fip->nfields++; |
6020 | ||
6021 | /* Handle accessibility and virtuality of field. | |
6022 | The default accessibility for members is public, the default | |
6023 | accessibility for inheritance is private. */ | |
6024 | if (die->tag != DW_TAG_inheritance) | |
6025 | new_field->accessibility = DW_ACCESS_public; | |
6026 | else | |
6027 | new_field->accessibility = DW_ACCESS_private; | |
6028 | new_field->virtuality = DW_VIRTUALITY_none; | |
6029 | ||
e142c38c | 6030 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
6031 | if (attr) |
6032 | new_field->accessibility = DW_UNSND (attr); | |
6033 | if (new_field->accessibility != DW_ACCESS_public) | |
6034 | fip->non_public_fields = 1; | |
e142c38c | 6035 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
6036 | if (attr) |
6037 | new_field->virtuality = DW_UNSND (attr); | |
6038 | ||
6039 | fp = &new_field->field; | |
a9a9bd0f | 6040 | |
e142c38c | 6041 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 6042 | { |
a9a9bd0f | 6043 | /* Data member other than a C++ static data member. */ |
6e70227d | 6044 | |
c906108c | 6045 | /* Get type of field. */ |
e7c27a73 | 6046 | fp->type = die_type (die, cu); |
c906108c | 6047 | |
d6a843b5 | 6048 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 6049 | |
c906108c | 6050 | /* Get bit size of field (zero if none). */ |
e142c38c | 6051 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
6052 | if (attr) |
6053 | { | |
6054 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
6055 | } | |
6056 | else | |
6057 | { | |
6058 | FIELD_BITSIZE (*fp) = 0; | |
6059 | } | |
6060 | ||
6061 | /* Get bit offset of field. */ | |
e142c38c | 6062 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
6063 | if (attr) |
6064 | { | |
d4b96c9a | 6065 | int byte_offset = 0; |
c6a0999f | 6066 | |
3690dd37 | 6067 | if (attr_form_is_section_offset (attr)) |
d4b96c9a | 6068 | dwarf2_complex_location_expr_complaint (); |
3690dd37 | 6069 | else if (attr_form_is_constant (attr)) |
c6a0999f | 6070 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); |
d4b96c9a | 6071 | else if (attr_form_is_block (attr)) |
c6a0999f | 6072 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); |
d4b96c9a JK |
6073 | else |
6074 | dwarf2_complex_location_expr_complaint (); | |
c6a0999f | 6075 | |
d6a843b5 | 6076 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); |
c906108c | 6077 | } |
e142c38c | 6078 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
6079 | if (attr) |
6080 | { | |
5e2b427d | 6081 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
6082 | { |
6083 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
6084 | additional bit offset from the MSB of the containing |
6085 | anonymous object to the MSB of the field. We don't | |
6086 | have to do anything special since we don't need to | |
6087 | know the size of the anonymous object. */ | |
c906108c SS |
6088 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
6089 | } | |
6090 | else | |
6091 | { | |
6092 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
6093 | MSB of the anonymous object, subtract off the number of |
6094 | bits from the MSB of the field to the MSB of the | |
6095 | object, and then subtract off the number of bits of | |
6096 | the field itself. The result is the bit offset of | |
6097 | the LSB of the field. */ | |
c906108c SS |
6098 | int anonymous_size; |
6099 | int bit_offset = DW_UNSND (attr); | |
6100 | ||
e142c38c | 6101 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
6102 | if (attr) |
6103 | { | |
6104 | /* The size of the anonymous object containing | |
6105 | the bit field is explicit, so use the | |
6106 | indicated size (in bytes). */ | |
6107 | anonymous_size = DW_UNSND (attr); | |
6108 | } | |
6109 | else | |
6110 | { | |
6111 | /* The size of the anonymous object containing | |
6112 | the bit field must be inferred from the type | |
6113 | attribute of the data member containing the | |
6114 | bit field. */ | |
6115 | anonymous_size = TYPE_LENGTH (fp->type); | |
6116 | } | |
6117 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
6118 | - bit_offset - FIELD_BITSIZE (*fp); | |
6119 | } | |
6120 | } | |
6121 | ||
6122 | /* Get name of field. */ | |
39cbfefa DJ |
6123 | fieldname = dwarf2_name (die, cu); |
6124 | if (fieldname == NULL) | |
6125 | fieldname = ""; | |
d8151005 DJ |
6126 | |
6127 | /* The name is already allocated along with this objfile, so we don't | |
6128 | need to duplicate it for the type. */ | |
6129 | fp->name = fieldname; | |
c906108c SS |
6130 | |
6131 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 6132 | pointer or virtual base class pointer) to private. */ |
e142c38c | 6133 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 6134 | { |
d48cc9dd | 6135 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
6136 | new_field->accessibility = DW_ACCESS_private; |
6137 | fip->non_public_fields = 1; | |
6138 | } | |
6139 | } | |
a9a9bd0f | 6140 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 6141 | { |
a9a9bd0f DC |
6142 | /* C++ static member. */ |
6143 | ||
6144 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
6145 | is a declaration, but all versions of G++ as of this writing | |
6146 | (so through at least 3.2.1) incorrectly generate | |
6147 | DW_TAG_variable tags. */ | |
6e70227d | 6148 | |
c906108c | 6149 | char *physname; |
c906108c | 6150 | |
a9a9bd0f | 6151 | /* Get name of field. */ |
39cbfefa DJ |
6152 | fieldname = dwarf2_name (die, cu); |
6153 | if (fieldname == NULL) | |
c906108c SS |
6154 | return; |
6155 | ||
254e6b9e | 6156 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
6157 | if (attr |
6158 | /* Only create a symbol if this is an external value. | |
6159 | new_symbol checks this and puts the value in the global symbol | |
6160 | table, which we want. If it is not external, new_symbol | |
6161 | will try to put the value in cu->list_in_scope which is wrong. */ | |
6162 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
6163 | { |
6164 | /* A static const member, not much different than an enum as far as | |
6165 | we're concerned, except that we can support more types. */ | |
6166 | new_symbol (die, NULL, cu); | |
6167 | } | |
6168 | ||
2df3850c | 6169 | /* Get physical name. */ |
94af9270 | 6170 | physname = (char *) dwarf2_physname (fieldname, die, cu); |
c906108c | 6171 | |
d8151005 DJ |
6172 | /* The name is already allocated along with this objfile, so we don't |
6173 | need to duplicate it for the type. */ | |
6174 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 6175 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 6176 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
6177 | } |
6178 | else if (die->tag == DW_TAG_inheritance) | |
6179 | { | |
6180 | /* C++ base class field. */ | |
e142c38c | 6181 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 6182 | if (attr) |
d4b96c9a JK |
6183 | { |
6184 | int byte_offset = 0; | |
6185 | ||
6186 | if (attr_form_is_section_offset (attr)) | |
6187 | dwarf2_complex_location_expr_complaint (); | |
6188 | else if (attr_form_is_constant (attr)) | |
6189 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); | |
6190 | else if (attr_form_is_block (attr)) | |
6191 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); | |
6192 | else | |
6193 | dwarf2_complex_location_expr_complaint (); | |
6194 | ||
6195 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); | |
6196 | } | |
c906108c | 6197 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 6198 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
6199 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
6200 | fip->nbaseclasses++; | |
6201 | } | |
6202 | } | |
6203 | ||
98751a41 JK |
6204 | /* Add a typedef defined in the scope of the FIP's class. */ |
6205 | ||
6206 | static void | |
6207 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
6208 | struct dwarf2_cu *cu) | |
6e70227d | 6209 | { |
98751a41 JK |
6210 | struct objfile *objfile = cu->objfile; |
6211 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
6212 | struct typedef_field_list *new_field; | |
6213 | struct attribute *attr; | |
6214 | struct typedef_field *fp; | |
6215 | char *fieldname = ""; | |
6216 | ||
6217 | /* Allocate a new field list entry and link it in. */ | |
6218 | new_field = xzalloc (sizeof (*new_field)); | |
6219 | make_cleanup (xfree, new_field); | |
6220 | ||
6221 | gdb_assert (die->tag == DW_TAG_typedef); | |
6222 | ||
6223 | fp = &new_field->field; | |
6224 | ||
6225 | /* Get name of field. */ | |
6226 | fp->name = dwarf2_name (die, cu); | |
6227 | if (fp->name == NULL) | |
6228 | return; | |
6229 | ||
6230 | fp->type = read_type_die (die, cu); | |
6231 | ||
6232 | new_field->next = fip->typedef_field_list; | |
6233 | fip->typedef_field_list = new_field; | |
6234 | fip->typedef_field_list_count++; | |
6235 | } | |
6236 | ||
c906108c SS |
6237 | /* Create the vector of fields, and attach it to the type. */ |
6238 | ||
6239 | static void | |
fba45db2 | 6240 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 6241 | struct dwarf2_cu *cu) |
c906108c SS |
6242 | { |
6243 | int nfields = fip->nfields; | |
6244 | ||
6245 | /* Record the field count, allocate space for the array of fields, | |
6246 | and create blank accessibility bitfields if necessary. */ | |
6247 | TYPE_NFIELDS (type) = nfields; | |
6248 | TYPE_FIELDS (type) = (struct field *) | |
6249 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
6250 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
6251 | ||
b4ba55a1 | 6252 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
6253 | { |
6254 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
6255 | ||
6256 | TYPE_FIELD_PRIVATE_BITS (type) = | |
6257 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6258 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
6259 | ||
6260 | TYPE_FIELD_PROTECTED_BITS (type) = | |
6261 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6262 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
6263 | ||
774b6a14 TT |
6264 | TYPE_FIELD_IGNORE_BITS (type) = |
6265 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6266 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
6267 | } |
6268 | ||
6269 | /* If the type has baseclasses, allocate and clear a bit vector for | |
6270 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 6271 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
6272 | { |
6273 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 6274 | unsigned char *pointer; |
c906108c SS |
6275 | |
6276 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
6277 | pointer = TYPE_ALLOC (type, num_bytes); |
6278 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
6279 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
6280 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
6281 | } | |
6282 | ||
6283 | /* Copy the saved-up fields into the field vector. Start from the head | |
6284 | of the list, adding to the tail of the field array, so that they end | |
6285 | up in the same order in the array in which they were added to the list. */ | |
6286 | while (nfields-- > 0) | |
6287 | { | |
7d0ccb61 DJ |
6288 | struct nextfield *fieldp; |
6289 | ||
6290 | if (fip->fields) | |
6291 | { | |
6292 | fieldp = fip->fields; | |
6293 | fip->fields = fieldp->next; | |
6294 | } | |
6295 | else | |
6296 | { | |
6297 | fieldp = fip->baseclasses; | |
6298 | fip->baseclasses = fieldp->next; | |
6299 | } | |
6300 | ||
6301 | TYPE_FIELD (type, nfields) = fieldp->field; | |
6302 | switch (fieldp->accessibility) | |
c906108c | 6303 | { |
c5aa993b | 6304 | case DW_ACCESS_private: |
b4ba55a1 JB |
6305 | if (cu->language != language_ada) |
6306 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 6307 | break; |
c906108c | 6308 | |
c5aa993b | 6309 | case DW_ACCESS_protected: |
b4ba55a1 JB |
6310 | if (cu->language != language_ada) |
6311 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 6312 | break; |
c906108c | 6313 | |
c5aa993b JM |
6314 | case DW_ACCESS_public: |
6315 | break; | |
c906108c | 6316 | |
c5aa993b JM |
6317 | default: |
6318 | /* Unknown accessibility. Complain and treat it as public. */ | |
6319 | { | |
e2e0b3e5 | 6320 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 6321 | fieldp->accessibility); |
c5aa993b JM |
6322 | } |
6323 | break; | |
c906108c SS |
6324 | } |
6325 | if (nfields < fip->nbaseclasses) | |
6326 | { | |
7d0ccb61 | 6327 | switch (fieldp->virtuality) |
c906108c | 6328 | { |
c5aa993b JM |
6329 | case DW_VIRTUALITY_virtual: |
6330 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 JB |
6331 | if (cu->language == language_ada) |
6332 | error ("unexpected virtuality in component of Ada type"); | |
c5aa993b JM |
6333 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
6334 | break; | |
c906108c SS |
6335 | } |
6336 | } | |
c906108c SS |
6337 | } |
6338 | } | |
6339 | ||
c906108c SS |
6340 | /* Add a member function to the proper fieldlist. */ |
6341 | ||
6342 | static void | |
107d2387 | 6343 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 6344 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 6345 | { |
e7c27a73 | 6346 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6347 | struct attribute *attr; |
6348 | struct fnfieldlist *flp; | |
6349 | int i; | |
6350 | struct fn_field *fnp; | |
6351 | char *fieldname; | |
c906108c | 6352 | struct nextfnfield *new_fnfield; |
f792889a | 6353 | struct type *this_type; |
c906108c | 6354 | |
b4ba55a1 JB |
6355 | if (cu->language == language_ada) |
6356 | error ("unexpected member function in Ada type"); | |
6357 | ||
2df3850c | 6358 | /* Get name of member function. */ |
39cbfefa DJ |
6359 | fieldname = dwarf2_name (die, cu); |
6360 | if (fieldname == NULL) | |
2df3850c | 6361 | return; |
c906108c | 6362 | |
c906108c SS |
6363 | /* Look up member function name in fieldlist. */ |
6364 | for (i = 0; i < fip->nfnfields; i++) | |
6365 | { | |
27bfe10e | 6366 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
6367 | break; |
6368 | } | |
6369 | ||
6370 | /* Create new list element if necessary. */ | |
6371 | if (i < fip->nfnfields) | |
6372 | flp = &fip->fnfieldlists[i]; | |
6373 | else | |
6374 | { | |
6375 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
6376 | { | |
6377 | fip->fnfieldlists = (struct fnfieldlist *) | |
6378 | xrealloc (fip->fnfieldlists, | |
6379 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 6380 | * sizeof (struct fnfieldlist)); |
c906108c | 6381 | if (fip->nfnfields == 0) |
c13c43fd | 6382 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
6383 | } |
6384 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
6385 | flp->name = fieldname; | |
6386 | flp->length = 0; | |
6387 | flp->head = NULL; | |
3da10d80 | 6388 | i = fip->nfnfields++; |
c906108c SS |
6389 | } |
6390 | ||
6391 | /* Create a new member function field and chain it to the field list | |
6392 | entry. */ | |
6393 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 6394 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
6395 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
6396 | new_fnfield->next = flp->head; | |
6397 | flp->head = new_fnfield; | |
6398 | flp->length++; | |
6399 | ||
6400 | /* Fill in the member function field info. */ | |
6401 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
6402 | |
6403 | /* Delay processing of the physname until later. */ | |
6404 | if (cu->language == language_cplus || cu->language == language_java) | |
6405 | { | |
6406 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
6407 | die, cu); | |
6408 | } | |
6409 | else | |
6410 | { | |
6411 | char *physname = (char *) dwarf2_physname (fieldname, die, cu); | |
6412 | fnp->physname = physname ? physname : ""; | |
6413 | } | |
6414 | ||
c906108c | 6415 | fnp->type = alloc_type (objfile); |
f792889a DJ |
6416 | this_type = read_type_die (die, cu); |
6417 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 6418 | { |
f792889a | 6419 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 6420 | |
f792889a | 6421 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
6422 | of the method itself (TYPE_CODE_METHOD). */ |
6423 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
6424 | TYPE_TARGET_TYPE (this_type), |
6425 | TYPE_FIELDS (this_type), | |
6426 | TYPE_NFIELDS (this_type), | |
6427 | TYPE_VARARGS (this_type)); | |
c906108c SS |
6428 | |
6429 | /* Handle static member functions. | |
c5aa993b JM |
6430 | Dwarf2 has no clean way to discern C++ static and non-static |
6431 | member functions. G++ helps GDB by marking the first | |
6432 | parameter for non-static member functions (which is the | |
6433 | this pointer) as artificial. We obtain this information | |
6434 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 6435 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
6436 | fnp->voffset = VOFFSET_STATIC; |
6437 | } | |
6438 | else | |
e2e0b3e5 | 6439 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 6440 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
6441 | |
6442 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 6443 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 6444 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
6445 | |
6446 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
6447 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
6448 | ||
6449 | /* Get accessibility. */ | |
e142c38c | 6450 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
6451 | if (attr) |
6452 | { | |
6453 | switch (DW_UNSND (attr)) | |
6454 | { | |
c5aa993b JM |
6455 | case DW_ACCESS_private: |
6456 | fnp->is_private = 1; | |
6457 | break; | |
6458 | case DW_ACCESS_protected: | |
6459 | fnp->is_protected = 1; | |
6460 | break; | |
c906108c SS |
6461 | } |
6462 | } | |
6463 | ||
b02dede2 | 6464 | /* Check for artificial methods. */ |
e142c38c | 6465 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
6466 | if (attr && DW_UNSND (attr) != 0) |
6467 | fnp->is_artificial = 1; | |
6468 | ||
0d564a31 | 6469 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
6470 | function. For older versions of GCC, this is an offset in the |
6471 | appropriate virtual table, as specified by DW_AT_containing_type. | |
6472 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
6473 | to the object address. */ |
6474 | ||
e142c38c | 6475 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 6476 | if (attr) |
8e19ed76 | 6477 | { |
aec5aa8b | 6478 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 6479 | { |
aec5aa8b TT |
6480 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
6481 | { | |
6482 | /* Old-style GCC. */ | |
6483 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
6484 | } | |
6485 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
6486 | || (DW_BLOCK (attr)->size > 1 | |
6487 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
6488 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
6489 | { | |
6490 | struct dwarf_block blk; | |
6491 | int offset; | |
6492 | ||
6493 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
6494 | ? 1 : 2); | |
6495 | blk.size = DW_BLOCK (attr)->size - offset; | |
6496 | blk.data = DW_BLOCK (attr)->data + offset; | |
6497 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
6498 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
6499 | dwarf2_complex_location_expr_complaint (); | |
6500 | else | |
6501 | fnp->voffset /= cu->header.addr_size; | |
6502 | fnp->voffset += 2; | |
6503 | } | |
6504 | else | |
6505 | dwarf2_complex_location_expr_complaint (); | |
6506 | ||
6507 | if (!fnp->fcontext) | |
6508 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
6509 | } | |
3690dd37 | 6510 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 6511 | { |
4d3c2250 | 6512 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
6513 | } |
6514 | else | |
6515 | { | |
4d3c2250 KB |
6516 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
6517 | fieldname); | |
8e19ed76 | 6518 | } |
0d564a31 | 6519 | } |
d48cc9dd DJ |
6520 | else |
6521 | { | |
6522 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
6523 | if (attr && DW_UNSND (attr)) | |
6524 | { | |
6525 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
6526 | complaint (&symfile_complaints, | |
6527 | _("Member function \"%s\" (offset %d) is virtual but the vtable offset is not specified"), | |
6528 | fieldname, die->offset); | |
9655fd1a | 6529 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
6530 | TYPE_CPLUS_DYNAMIC (type) = 1; |
6531 | } | |
6532 | } | |
c906108c SS |
6533 | } |
6534 | ||
6535 | /* Create the vector of member function fields, and attach it to the type. */ | |
6536 | ||
6537 | static void | |
fba45db2 | 6538 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 6539 | struct dwarf2_cu *cu) |
c906108c SS |
6540 | { |
6541 | struct fnfieldlist *flp; | |
6542 | int total_length = 0; | |
6543 | int i; | |
6544 | ||
b4ba55a1 JB |
6545 | if (cu->language == language_ada) |
6546 | error ("unexpected member functions in Ada type"); | |
6547 | ||
c906108c SS |
6548 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
6549 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
6550 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
6551 | ||
6552 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
6553 | { | |
6554 | struct nextfnfield *nfp = flp->head; | |
6555 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
6556 | int k; | |
6557 | ||
6558 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
6559 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
6560 | fn_flp->fn_fields = (struct fn_field *) | |
6561 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
6562 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 6563 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
6564 | |
6565 | total_length += flp->length; | |
6566 | } | |
6567 | ||
6568 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
6569 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
6570 | } | |
6571 | ||
1168df01 JB |
6572 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
6573 | language, zero otherwise. */ | |
6574 | static int | |
6575 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
6576 | { | |
6577 | static const char vptr[] = "_vptr"; | |
987504bb | 6578 | static const char vtable[] = "vtable"; |
1168df01 | 6579 | |
987504bb JJ |
6580 | /* Look for the C++ and Java forms of the vtable. */ |
6581 | if ((cu->language == language_java | |
6582 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
6583 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
6584 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
6585 | return 1; |
6586 | ||
6587 | return 0; | |
6588 | } | |
6589 | ||
c0dd20ea | 6590 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
6591 | functions, with the ABI-specified layout. If TYPE describes |
6592 | such a structure, smash it into a member function type. | |
61049d3b DJ |
6593 | |
6594 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
6595 | This is GCC PR debug/28767. */ | |
c0dd20ea | 6596 | |
0b92b5bb TT |
6597 | static void |
6598 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 6599 | { |
0b92b5bb | 6600 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
6601 | |
6602 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
6603 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
6604 | return; | |
c0dd20ea DJ |
6605 | |
6606 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
6607 | if (TYPE_FIELD_NAME (type, 0) == NULL |
6608 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
6609 | || TYPE_FIELD_NAME (type, 1) == NULL | |
6610 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
6611 | return; | |
c0dd20ea DJ |
6612 | |
6613 | /* Find the type of the method. */ | |
0b92b5bb | 6614 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
6615 | if (pfn_type == NULL |
6616 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
6617 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 6618 | return; |
c0dd20ea DJ |
6619 | |
6620 | /* Look for the "this" argument. */ | |
6621 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
6622 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 6623 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 6624 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 6625 | return; |
c0dd20ea DJ |
6626 | |
6627 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
6628 | new_type = alloc_type (objfile); |
6629 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
6630 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
6631 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 6632 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 6633 | } |
1168df01 | 6634 | |
c906108c | 6635 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
6636 | (definition) to create a type for the structure or union. Fill in |
6637 | the type's name and general properties; the members will not be | |
6638 | processed until process_structure_type. | |
c906108c | 6639 | |
c767944b DJ |
6640 | NOTE: we need to call these functions regardless of whether or not the |
6641 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
6642 | structure or union. This gets the type entered into our set of |
6643 | user defined types. | |
6644 | ||
6645 | However, if the structure is incomplete (an opaque struct/union) | |
6646 | then suppress creating a symbol table entry for it since gdb only | |
6647 | wants to find the one with the complete definition. Note that if | |
6648 | it is complete, we just call new_symbol, which does it's own | |
6649 | checking about whether the struct/union is anonymous or not (and | |
6650 | suppresses creating a symbol table entry itself). */ | |
6651 | ||
f792889a | 6652 | static struct type * |
134d01f1 | 6653 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6654 | { |
e7c27a73 | 6655 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6656 | struct type *type; |
6657 | struct attribute *attr; | |
39cbfefa | 6658 | char *name; |
c906108c | 6659 | |
348e048f DE |
6660 | /* If the definition of this type lives in .debug_types, read that type. |
6661 | Don't follow DW_AT_specification though, that will take us back up | |
6662 | the chain and we want to go down. */ | |
6663 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
6664 | if (attr) | |
6665 | { | |
6666 | struct dwarf2_cu *type_cu = cu; | |
6667 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 6668 | |
348e048f DE |
6669 | /* We could just recurse on read_structure_type, but we need to call |
6670 | get_die_type to ensure only one type for this DIE is created. | |
6671 | This is important, for example, because for c++ classes we need | |
6672 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
6673 | type = read_type_die (type_die, type_cu); | |
9dc481d3 DE |
6674 | |
6675 | /* TYPE_CU may not be the same as CU. | |
6676 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
6677 | return set_die_type (die, type, cu); |
6678 | } | |
6679 | ||
c0dd20ea | 6680 | type = alloc_type (objfile); |
c906108c | 6681 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 6682 | |
39cbfefa DJ |
6683 | name = dwarf2_name (die, cu); |
6684 | if (name != NULL) | |
c906108c | 6685 | { |
987504bb JJ |
6686 | if (cu->language == language_cplus |
6687 | || cu->language == language_java) | |
63d06c5c | 6688 | { |
3da10d80 KS |
6689 | char *full_name = (char *) dwarf2_full_name (name, die, cu); |
6690 | ||
6691 | /* dwarf2_full_name might have already finished building the DIE's | |
6692 | type. If so, there is no need to continue. */ | |
6693 | if (get_die_type (die, cu) != NULL) | |
6694 | return get_die_type (die, cu); | |
6695 | ||
6696 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
6697 | if (die->tag == DW_TAG_structure_type |
6698 | || die->tag == DW_TAG_class_type) | |
6699 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
6700 | } |
6701 | else | |
6702 | { | |
d8151005 DJ |
6703 | /* The name is already allocated along with this objfile, so |
6704 | we don't need to duplicate it for the type. */ | |
94af9270 KS |
6705 | TYPE_TAG_NAME (type) = (char *) name; |
6706 | if (die->tag == DW_TAG_class_type) | |
6707 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 6708 | } |
c906108c SS |
6709 | } |
6710 | ||
6711 | if (die->tag == DW_TAG_structure_type) | |
6712 | { | |
6713 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
6714 | } | |
6715 | else if (die->tag == DW_TAG_union_type) | |
6716 | { | |
6717 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
6718 | } | |
6719 | else | |
6720 | { | |
c906108c SS |
6721 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
6722 | } | |
6723 | ||
0cc2414c TT |
6724 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
6725 | TYPE_DECLARED_CLASS (type) = 1; | |
6726 | ||
e142c38c | 6727 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
6728 | if (attr) |
6729 | { | |
6730 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
6731 | } | |
6732 | else | |
6733 | { | |
6734 | TYPE_LENGTH (type) = 0; | |
6735 | } | |
6736 | ||
876cecd0 | 6737 | TYPE_STUB_SUPPORTED (type) = 1; |
dc718098 | 6738 | if (die_is_declaration (die, cu)) |
876cecd0 | 6739 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
6740 | else if (attr == NULL && die->child == NULL |
6741 | && producer_is_realview (cu->producer)) | |
6742 | /* RealView does not output the required DW_AT_declaration | |
6743 | on incomplete types. */ | |
6744 | TYPE_STUB (type) = 1; | |
dc718098 | 6745 | |
c906108c SS |
6746 | /* We need to add the type field to the die immediately so we don't |
6747 | infinitely recurse when dealing with pointers to the structure | |
6748 | type within the structure itself. */ | |
1c379e20 | 6749 | set_die_type (die, type, cu); |
c906108c | 6750 | |
7e314c57 JK |
6751 | /* set_die_type should be already done. */ |
6752 | set_descriptive_type (type, die, cu); | |
6753 | ||
c767944b DJ |
6754 | return type; |
6755 | } | |
6756 | ||
6757 | /* Finish creating a structure or union type, including filling in | |
6758 | its members and creating a symbol for it. */ | |
6759 | ||
6760 | static void | |
6761 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
6762 | { | |
6763 | struct objfile *objfile = cu->objfile; | |
6764 | struct die_info *child_die = die->child; | |
6765 | struct type *type; | |
6766 | ||
6767 | type = get_die_type (die, cu); | |
6768 | if (type == NULL) | |
6769 | type = read_structure_type (die, cu); | |
6770 | ||
e142c38c | 6771 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
6772 | { |
6773 | struct field_info fi; | |
6774 | struct die_info *child_die; | |
34eaf542 | 6775 | VEC (symbolp) *template_args = NULL; |
c767944b | 6776 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
6777 | |
6778 | memset (&fi, 0, sizeof (struct field_info)); | |
6779 | ||
639d11d3 | 6780 | child_die = die->child; |
c906108c SS |
6781 | |
6782 | while (child_die && child_die->tag) | |
6783 | { | |
a9a9bd0f DC |
6784 | if (child_die->tag == DW_TAG_member |
6785 | || child_die->tag == DW_TAG_variable) | |
c906108c | 6786 | { |
a9a9bd0f DC |
6787 | /* NOTE: carlton/2002-11-05: A C++ static data member |
6788 | should be a DW_TAG_member that is a declaration, but | |
6789 | all versions of G++ as of this writing (so through at | |
6790 | least 3.2.1) incorrectly generate DW_TAG_variable | |
6791 | tags for them instead. */ | |
e7c27a73 | 6792 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 6793 | } |
8713b1b1 | 6794 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
6795 | { |
6796 | /* C++ member function. */ | |
e7c27a73 | 6797 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
6798 | } |
6799 | else if (child_die->tag == DW_TAG_inheritance) | |
6800 | { | |
6801 | /* C++ base class field. */ | |
e7c27a73 | 6802 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 6803 | } |
98751a41 JK |
6804 | else if (child_die->tag == DW_TAG_typedef) |
6805 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
6806 | else if (child_die->tag == DW_TAG_template_type_param |
6807 | || child_die->tag == DW_TAG_template_value_param) | |
6808 | { | |
6809 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
6810 | ||
f1078f66 DJ |
6811 | if (arg != NULL) |
6812 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
6813 | } |
6814 | ||
c906108c SS |
6815 | child_die = sibling_die (child_die); |
6816 | } | |
6817 | ||
34eaf542 TT |
6818 | /* Attach template arguments to type. */ |
6819 | if (! VEC_empty (symbolp, template_args)) | |
6820 | { | |
6821 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
6822 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
6823 | = VEC_length (symbolp, template_args); | |
6824 | TYPE_TEMPLATE_ARGUMENTS (type) | |
6825 | = obstack_alloc (&objfile->objfile_obstack, | |
6826 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
6827 | * sizeof (struct symbol *))); | |
6828 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
6829 | VEC_address (symbolp, template_args), | |
6830 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
6831 | * sizeof (struct symbol *))); | |
6832 | VEC_free (symbolp, template_args); | |
6833 | } | |
6834 | ||
c906108c SS |
6835 | /* Attach fields and member functions to the type. */ |
6836 | if (fi.nfields) | |
e7c27a73 | 6837 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
6838 | if (fi.nfnfields) |
6839 | { | |
e7c27a73 | 6840 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 6841 | |
c5aa993b | 6842 | /* Get the type which refers to the base class (possibly this |
c906108c | 6843 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
6844 | class from the DW_AT_containing_type attribute. This use of |
6845 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 6846 | |
e142c38c | 6847 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 6848 | { |
e7c27a73 | 6849 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
6850 | |
6851 | TYPE_VPTR_BASETYPE (type) = t; | |
6852 | if (type == t) | |
6853 | { | |
c906108c SS |
6854 | int i; |
6855 | ||
6856 | /* Our own class provides vtbl ptr. */ | |
6857 | for (i = TYPE_NFIELDS (t) - 1; | |
6858 | i >= TYPE_N_BASECLASSES (t); | |
6859 | --i) | |
6860 | { | |
6861 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
6862 | ||
1168df01 | 6863 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
6864 | { |
6865 | TYPE_VPTR_FIELDNO (type) = i; | |
6866 | break; | |
6867 | } | |
6868 | } | |
6869 | ||
6870 | /* Complain if virtual function table field not found. */ | |
6871 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 6872 | complaint (&symfile_complaints, |
e2e0b3e5 | 6873 | _("virtual function table pointer not found when defining class '%s'"), |
4d3c2250 KB |
6874 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
6875 | ""); | |
c906108c SS |
6876 | } |
6877 | else | |
6878 | { | |
6879 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
6880 | } | |
6881 | } | |
f6235d4c EZ |
6882 | else if (cu->producer |
6883 | && strncmp (cu->producer, | |
6884 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
6885 | { | |
6886 | /* The IBM XLC compiler does not provide direct indication | |
6887 | of the containing type, but the vtable pointer is | |
6888 | always named __vfp. */ | |
6889 | ||
6890 | int i; | |
6891 | ||
6892 | for (i = TYPE_NFIELDS (type) - 1; | |
6893 | i >= TYPE_N_BASECLASSES (type); | |
6894 | --i) | |
6895 | { | |
6896 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
6897 | { | |
6898 | TYPE_VPTR_FIELDNO (type) = i; | |
6899 | TYPE_VPTR_BASETYPE (type) = type; | |
6900 | break; | |
6901 | } | |
6902 | } | |
6903 | } | |
c906108c | 6904 | } |
98751a41 JK |
6905 | |
6906 | /* Copy fi.typedef_field_list linked list elements content into the | |
6907 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
6908 | if (fi.typedef_field_list) | |
6909 | { | |
6910 | int i = fi.typedef_field_list_count; | |
6911 | ||
a0d7a4ff | 6912 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
6913 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
6914 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
6915 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
6916 | ||
6917 | /* Reverse the list order to keep the debug info elements order. */ | |
6918 | while (--i >= 0) | |
6919 | { | |
6920 | struct typedef_field *dest, *src; | |
6e70227d | 6921 | |
98751a41 JK |
6922 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
6923 | src = &fi.typedef_field_list->field; | |
6924 | fi.typedef_field_list = fi.typedef_field_list->next; | |
6925 | *dest = *src; | |
6926 | } | |
6927 | } | |
c767944b DJ |
6928 | |
6929 | do_cleanups (back_to); | |
c906108c | 6930 | } |
63d06c5c | 6931 | |
0b92b5bb TT |
6932 | quirk_gcc_member_function_pointer (type, cu->objfile); |
6933 | ||
90aeadfc DC |
6934 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
6935 | snapshots) has been known to create a die giving a declaration | |
6936 | for a class that has, as a child, a die giving a definition for a | |
6937 | nested class. So we have to process our children even if the | |
6938 | current die is a declaration. Normally, of course, a declaration | |
6939 | won't have any children at all. */ | |
134d01f1 | 6940 | |
90aeadfc DC |
6941 | while (child_die != NULL && child_die->tag) |
6942 | { | |
6943 | if (child_die->tag == DW_TAG_member | |
6944 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
6945 | || child_die->tag == DW_TAG_inheritance |
6946 | || child_die->tag == DW_TAG_template_value_param | |
6947 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 6948 | { |
90aeadfc | 6949 | /* Do nothing. */ |
134d01f1 | 6950 | } |
90aeadfc DC |
6951 | else |
6952 | process_die (child_die, cu); | |
134d01f1 | 6953 | |
90aeadfc | 6954 | child_die = sibling_die (child_die); |
134d01f1 DJ |
6955 | } |
6956 | ||
fa4028e9 JB |
6957 | /* Do not consider external references. According to the DWARF standard, |
6958 | these DIEs are identified by the fact that they have no byte_size | |
6959 | attribute, and a declaration attribute. */ | |
6960 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
6961 | || !die_is_declaration (die, cu)) | |
c767944b | 6962 | new_symbol (die, type, cu); |
134d01f1 DJ |
6963 | } |
6964 | ||
6965 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
6966 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 6967 | |
f792889a | 6968 | static struct type * |
134d01f1 | 6969 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6970 | { |
e7c27a73 | 6971 | struct objfile *objfile = cu->objfile; |
c906108c | 6972 | struct type *type; |
c906108c | 6973 | struct attribute *attr; |
0114d602 | 6974 | const char *name; |
134d01f1 | 6975 | |
348e048f DE |
6976 | /* If the definition of this type lives in .debug_types, read that type. |
6977 | Don't follow DW_AT_specification though, that will take us back up | |
6978 | the chain and we want to go down. */ | |
6979 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
6980 | if (attr) | |
6981 | { | |
6982 | struct dwarf2_cu *type_cu = cu; | |
6983 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 6984 | |
348e048f | 6985 | type = read_type_die (type_die, type_cu); |
9dc481d3 DE |
6986 | |
6987 | /* TYPE_CU may not be the same as CU. | |
6988 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
6989 | return set_die_type (die, type, cu); |
6990 | } | |
6991 | ||
c906108c SS |
6992 | type = alloc_type (objfile); |
6993 | ||
6994 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 6995 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 6996 | if (name != NULL) |
0114d602 | 6997 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 6998 | |
e142c38c | 6999 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7000 | if (attr) |
7001 | { | |
7002 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7003 | } | |
7004 | else | |
7005 | { | |
7006 | TYPE_LENGTH (type) = 0; | |
7007 | } | |
7008 | ||
137033e9 JB |
7009 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
7010 | declared as private in the package spec, and then defined only | |
7011 | inside the package body. Such types are known as Taft Amendment | |
7012 | Types. When another package uses such a type, an incomplete DIE | |
7013 | may be generated by the compiler. */ | |
02eb380e | 7014 | if (die_is_declaration (die, cu)) |
876cecd0 | 7015 | TYPE_STUB (type) = 1; |
02eb380e | 7016 | |
f792889a | 7017 | return set_die_type (die, type, cu); |
134d01f1 DJ |
7018 | } |
7019 | ||
7020 | /* Given a pointer to a die which begins an enumeration, process all | |
7021 | the dies that define the members of the enumeration, and create the | |
7022 | symbol for the enumeration type. | |
7023 | ||
7024 | NOTE: We reverse the order of the element list. */ | |
7025 | ||
7026 | static void | |
7027 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
7028 | { | |
f792889a | 7029 | struct type *this_type; |
134d01f1 | 7030 | |
f792889a DJ |
7031 | this_type = get_die_type (die, cu); |
7032 | if (this_type == NULL) | |
7033 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 7034 | |
639d11d3 | 7035 | if (die->child != NULL) |
c906108c | 7036 | { |
9dc481d3 DE |
7037 | struct die_info *child_die; |
7038 | struct symbol *sym; | |
7039 | struct field *fields = NULL; | |
7040 | int num_fields = 0; | |
7041 | int unsigned_enum = 1; | |
7042 | char *name; | |
7043 | ||
639d11d3 | 7044 | child_die = die->child; |
c906108c SS |
7045 | while (child_die && child_die->tag) |
7046 | { | |
7047 | if (child_die->tag != DW_TAG_enumerator) | |
7048 | { | |
e7c27a73 | 7049 | process_die (child_die, cu); |
c906108c SS |
7050 | } |
7051 | else | |
7052 | { | |
39cbfefa DJ |
7053 | name = dwarf2_name (child_die, cu); |
7054 | if (name) | |
c906108c | 7055 | { |
f792889a | 7056 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
7057 | if (SYMBOL_VALUE (sym) < 0) |
7058 | unsigned_enum = 0; | |
7059 | ||
7060 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
7061 | { | |
7062 | fields = (struct field *) | |
7063 | xrealloc (fields, | |
7064 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 7065 | * sizeof (struct field)); |
c906108c SS |
7066 | } |
7067 | ||
3567439c | 7068 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 7069 | FIELD_TYPE (fields[num_fields]) = NULL; |
d6a843b5 | 7070 | SET_FIELD_BITPOS (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
7071 | FIELD_BITSIZE (fields[num_fields]) = 0; |
7072 | ||
7073 | num_fields++; | |
7074 | } | |
7075 | } | |
7076 | ||
7077 | child_die = sibling_die (child_die); | |
7078 | } | |
7079 | ||
7080 | if (num_fields) | |
7081 | { | |
f792889a DJ |
7082 | TYPE_NFIELDS (this_type) = num_fields; |
7083 | TYPE_FIELDS (this_type) = (struct field *) | |
7084 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
7085 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 7086 | sizeof (struct field) * num_fields); |
b8c9b27d | 7087 | xfree (fields); |
c906108c SS |
7088 | } |
7089 | if (unsigned_enum) | |
876cecd0 | 7090 | TYPE_UNSIGNED (this_type) = 1; |
c906108c | 7091 | } |
134d01f1 | 7092 | |
f792889a | 7093 | new_symbol (die, this_type, cu); |
c906108c SS |
7094 | } |
7095 | ||
7096 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
7097 | the DIE's type field. For now, this only handles one dimensional | |
7098 | arrays. */ | |
7099 | ||
f792889a | 7100 | static struct type * |
e7c27a73 | 7101 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7102 | { |
e7c27a73 | 7103 | struct objfile *objfile = cu->objfile; |
c906108c | 7104 | struct die_info *child_die; |
7e314c57 | 7105 | struct type *type; |
c906108c SS |
7106 | struct type *element_type, *range_type, *index_type; |
7107 | struct type **range_types = NULL; | |
7108 | struct attribute *attr; | |
7109 | int ndim = 0; | |
7110 | struct cleanup *back_to; | |
39cbfefa | 7111 | char *name; |
c906108c | 7112 | |
e7c27a73 | 7113 | element_type = die_type (die, cu); |
c906108c | 7114 | |
7e314c57 JK |
7115 | /* The die_type call above may have already set the type for this DIE. */ |
7116 | type = get_die_type (die, cu); | |
7117 | if (type) | |
7118 | return type; | |
7119 | ||
c906108c SS |
7120 | /* Irix 6.2 native cc creates array types without children for |
7121 | arrays with unspecified length. */ | |
639d11d3 | 7122 | if (die->child == NULL) |
c906108c | 7123 | { |
46bf5051 | 7124 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 7125 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
7126 | type = create_array_type (NULL, element_type, range_type); |
7127 | return set_die_type (die, type, cu); | |
c906108c SS |
7128 | } |
7129 | ||
7130 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 7131 | child_die = die->child; |
c906108c SS |
7132 | while (child_die && child_die->tag) |
7133 | { | |
7134 | if (child_die->tag == DW_TAG_subrange_type) | |
7135 | { | |
f792889a | 7136 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 7137 | |
f792889a | 7138 | if (child_type != NULL) |
a02abb62 JB |
7139 | { |
7140 | /* The range type was succesfully read. Save it for | |
7141 | the array type creation. */ | |
7142 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
7143 | { | |
7144 | range_types = (struct type **) | |
7145 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
7146 | * sizeof (struct type *)); | |
7147 | if (ndim == 0) | |
7148 | make_cleanup (free_current_contents, &range_types); | |
7149 | } | |
f792889a | 7150 | range_types[ndim++] = child_type; |
a02abb62 | 7151 | } |
c906108c SS |
7152 | } |
7153 | child_die = sibling_die (child_die); | |
7154 | } | |
7155 | ||
7156 | /* Dwarf2 dimensions are output from left to right, create the | |
7157 | necessary array types in backwards order. */ | |
7ca2d3a3 | 7158 | |
c906108c | 7159 | type = element_type; |
7ca2d3a3 DL |
7160 | |
7161 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
7162 | { | |
7163 | int i = 0; | |
9a619af0 | 7164 | |
7ca2d3a3 DL |
7165 | while (i < ndim) |
7166 | type = create_array_type (NULL, type, range_types[i++]); | |
7167 | } | |
7168 | else | |
7169 | { | |
7170 | while (ndim-- > 0) | |
7171 | type = create_array_type (NULL, type, range_types[ndim]); | |
7172 | } | |
c906108c | 7173 | |
f5f8a009 EZ |
7174 | /* Understand Dwarf2 support for vector types (like they occur on |
7175 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
7176 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
7177 | custom vendor extension. The main difference between a regular | |
7178 | array and the vector variant is that vectors are passed by value | |
7179 | to functions. */ | |
e142c38c | 7180 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 7181 | if (attr) |
ea37ba09 | 7182 | make_vector_type (type); |
f5f8a009 | 7183 | |
39cbfefa DJ |
7184 | name = dwarf2_name (die, cu); |
7185 | if (name) | |
7186 | TYPE_NAME (type) = name; | |
6e70227d | 7187 | |
7e314c57 JK |
7188 | /* Install the type in the die. */ |
7189 | set_die_type (die, type, cu); | |
7190 | ||
7191 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
7192 | set_descriptive_type (type, die, cu); |
7193 | ||
c906108c SS |
7194 | do_cleanups (back_to); |
7195 | ||
7e314c57 | 7196 | return type; |
c906108c SS |
7197 | } |
7198 | ||
7ca2d3a3 | 7199 | static enum dwarf_array_dim_ordering |
6e70227d | 7200 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
7201 | { |
7202 | struct attribute *attr; | |
7203 | ||
7204 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
7205 | ||
7206 | if (attr) return DW_SND (attr); | |
7207 | ||
7208 | /* | |
7209 | GNU F77 is a special case, as at 08/2004 array type info is the | |
6e70227d | 7210 | opposite order to the dwarf2 specification, but data is still |
7ca2d3a3 DL |
7211 | laid out as per normal fortran. |
7212 | ||
6e70227d | 7213 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
7ca2d3a3 DL |
7214 | version checking. |
7215 | */ | |
7216 | ||
905e0470 PM |
7217 | if (cu->language == language_fortran |
7218 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
7219 | { |
7220 | return DW_ORD_row_major; | |
7221 | } | |
7222 | ||
6e70227d | 7223 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
7224 | { |
7225 | case array_column_major: | |
7226 | return DW_ORD_col_major; | |
7227 | case array_row_major: | |
7228 | default: | |
7229 | return DW_ORD_row_major; | |
7230 | }; | |
7231 | } | |
7232 | ||
72019c9c GM |
7233 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
7234 | the DIE's type field. */ | |
7235 | ||
f792889a | 7236 | static struct type * |
72019c9c GM |
7237 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
7238 | { | |
7e314c57 JK |
7239 | struct type *domain_type, *set_type; |
7240 | struct attribute *attr; | |
f792889a | 7241 | |
7e314c57 JK |
7242 | domain_type = die_type (die, cu); |
7243 | ||
7244 | /* The die_type call above may have already set the type for this DIE. */ | |
7245 | set_type = get_die_type (die, cu); | |
7246 | if (set_type) | |
7247 | return set_type; | |
7248 | ||
7249 | set_type = create_set_type (NULL, domain_type); | |
7250 | ||
7251 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
7252 | if (attr) |
7253 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 7254 | |
f792889a | 7255 | return set_die_type (die, set_type, cu); |
72019c9c | 7256 | } |
7ca2d3a3 | 7257 | |
c906108c SS |
7258 | /* First cut: install each common block member as a global variable. */ |
7259 | ||
7260 | static void | |
e7c27a73 | 7261 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7262 | { |
7263 | struct die_info *child_die; | |
7264 | struct attribute *attr; | |
7265 | struct symbol *sym; | |
7266 | CORE_ADDR base = (CORE_ADDR) 0; | |
7267 | ||
e142c38c | 7268 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7269 | if (attr) |
7270 | { | |
8e19ed76 PS |
7271 | /* Support the .debug_loc offsets */ |
7272 | if (attr_form_is_block (attr)) | |
7273 | { | |
e7c27a73 | 7274 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 7275 | } |
3690dd37 | 7276 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 7277 | { |
4d3c2250 | 7278 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
7279 | } |
7280 | else | |
7281 | { | |
4d3c2250 KB |
7282 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
7283 | "common block member"); | |
8e19ed76 | 7284 | } |
c906108c | 7285 | } |
639d11d3 | 7286 | if (die->child != NULL) |
c906108c | 7287 | { |
639d11d3 | 7288 | child_die = die->child; |
c906108c SS |
7289 | while (child_die && child_die->tag) |
7290 | { | |
e7c27a73 | 7291 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 7292 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
f1078f66 | 7293 | if (sym != NULL && attr != NULL) |
c906108c | 7294 | { |
d4b96c9a JK |
7295 | CORE_ADDR byte_offset = 0; |
7296 | ||
7297 | if (attr_form_is_section_offset (attr)) | |
7298 | dwarf2_complex_location_expr_complaint (); | |
7299 | else if (attr_form_is_constant (attr)) | |
7300 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); | |
7301 | else if (attr_form_is_block (attr)) | |
7302 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); | |
7303 | else | |
7304 | dwarf2_complex_location_expr_complaint (); | |
7305 | ||
7306 | SYMBOL_VALUE_ADDRESS (sym) = base + byte_offset; | |
c906108c SS |
7307 | add_symbol_to_list (sym, &global_symbols); |
7308 | } | |
7309 | child_die = sibling_die (child_die); | |
7310 | } | |
7311 | } | |
7312 | } | |
7313 | ||
0114d602 | 7314 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 7315 | |
0114d602 DJ |
7316 | static struct type * |
7317 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 7318 | { |
e7c27a73 | 7319 | struct objfile *objfile = cu->objfile; |
0114d602 | 7320 | const char *previous_prefix, *name; |
9219021c | 7321 | int is_anonymous; |
0114d602 DJ |
7322 | struct type *type; |
7323 | ||
7324 | /* For extensions, reuse the type of the original namespace. */ | |
7325 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
7326 | { | |
7327 | struct die_info *ext_die; | |
7328 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 7329 | |
0114d602 DJ |
7330 | ext_die = dwarf2_extension (die, &ext_cu); |
7331 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
7332 | |
7333 | /* EXT_CU may not be the same as CU. | |
7334 | Ensure TYPE is recorded in CU's type_hash table. */ | |
0114d602 DJ |
7335 | return set_die_type (die, type, cu); |
7336 | } | |
9219021c | 7337 | |
e142c38c | 7338 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
7339 | |
7340 | /* Now build the name of the current namespace. */ | |
7341 | ||
0114d602 DJ |
7342 | previous_prefix = determine_prefix (die, cu); |
7343 | if (previous_prefix[0] != '\0') | |
7344 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 7345 | previous_prefix, name, 0, cu); |
0114d602 DJ |
7346 | |
7347 | /* Create the type. */ | |
7348 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
7349 | objfile); | |
7350 | TYPE_NAME (type) = (char *) name; | |
7351 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7352 | ||
60531b24 | 7353 | return set_die_type (die, type, cu); |
0114d602 DJ |
7354 | } |
7355 | ||
7356 | /* Read a C++ namespace. */ | |
7357 | ||
7358 | static void | |
7359 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
7360 | { | |
7361 | struct objfile *objfile = cu->objfile; | |
7362 | const char *name; | |
7363 | int is_anonymous; | |
9219021c | 7364 | |
5c4e30ca DC |
7365 | /* Add a symbol associated to this if we haven't seen the namespace |
7366 | before. Also, add a using directive if it's an anonymous | |
7367 | namespace. */ | |
9219021c | 7368 | |
f2f0e013 | 7369 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
7370 | { |
7371 | struct type *type; | |
7372 | ||
0114d602 | 7373 | type = read_type_die (die, cu); |
e7c27a73 | 7374 | new_symbol (die, type, cu); |
5c4e30ca | 7375 | |
0114d602 | 7376 | name = namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 7377 | if (is_anonymous) |
0114d602 DJ |
7378 | { |
7379 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 7380 | |
c0cc3a76 | 7381 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
13387711 | 7382 | NULL, &objfile->objfile_obstack); |
0114d602 | 7383 | } |
5c4e30ca | 7384 | } |
9219021c | 7385 | |
639d11d3 | 7386 | if (die->child != NULL) |
d9fa45fe | 7387 | { |
639d11d3 | 7388 | struct die_info *child_die = die->child; |
6e70227d | 7389 | |
d9fa45fe DC |
7390 | while (child_die && child_die->tag) |
7391 | { | |
e7c27a73 | 7392 | process_die (child_die, cu); |
d9fa45fe DC |
7393 | child_die = sibling_die (child_die); |
7394 | } | |
7395 | } | |
38d518c9 EZ |
7396 | } |
7397 | ||
f55ee35c JK |
7398 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
7399 | imported module. Still we need that type as local Fortran "use ... only" | |
7400 | declaration imports depend on the created type in determine_prefix. */ | |
7401 | ||
7402 | static struct type * | |
7403 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
7404 | { | |
7405 | struct objfile *objfile = cu->objfile; | |
7406 | char *module_name; | |
7407 | struct type *type; | |
7408 | ||
7409 | module_name = dwarf2_name (die, cu); | |
7410 | if (!module_name) | |
7411 | complaint (&symfile_complaints, _("DW_TAG_module has no name, offset 0x%x"), | |
7412 | die->offset); | |
7413 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); | |
7414 | ||
7415 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
7416 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7417 | ||
7418 | return set_die_type (die, type, cu); | |
7419 | } | |
7420 | ||
5d7cb8df JK |
7421 | /* Read a Fortran module. */ |
7422 | ||
7423 | static void | |
7424 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
7425 | { | |
7426 | struct die_info *child_die = die->child; | |
7427 | ||
5d7cb8df JK |
7428 | while (child_die && child_die->tag) |
7429 | { | |
7430 | process_die (child_die, cu); | |
7431 | child_die = sibling_die (child_die); | |
7432 | } | |
7433 | } | |
7434 | ||
38d518c9 EZ |
7435 | /* Return the name of the namespace represented by DIE. Set |
7436 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
7437 | namespace. */ | |
7438 | ||
7439 | static const char * | |
e142c38c | 7440 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
7441 | { |
7442 | struct die_info *current_die; | |
7443 | const char *name = NULL; | |
7444 | ||
7445 | /* Loop through the extensions until we find a name. */ | |
7446 | ||
7447 | for (current_die = die; | |
7448 | current_die != NULL; | |
f2f0e013 | 7449 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 7450 | { |
e142c38c | 7451 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
7452 | if (name != NULL) |
7453 | break; | |
7454 | } | |
7455 | ||
7456 | /* Is it an anonymous namespace? */ | |
7457 | ||
7458 | *is_anonymous = (name == NULL); | |
7459 | if (*is_anonymous) | |
7460 | name = "(anonymous namespace)"; | |
7461 | ||
7462 | return name; | |
d9fa45fe DC |
7463 | } |
7464 | ||
c906108c SS |
7465 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
7466 | the user defined type vector. */ | |
7467 | ||
f792889a | 7468 | static struct type * |
e7c27a73 | 7469 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7470 | { |
5e2b427d | 7471 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 7472 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 7473 | struct type *type; |
8b2dbe47 KB |
7474 | struct attribute *attr_byte_size; |
7475 | struct attribute *attr_address_class; | |
7476 | int byte_size, addr_class; | |
7e314c57 JK |
7477 | struct type *target_type; |
7478 | ||
7479 | target_type = die_type (die, cu); | |
c906108c | 7480 | |
7e314c57 JK |
7481 | /* The die_type call above may have already set the type for this DIE. */ |
7482 | type = get_die_type (die, cu); | |
7483 | if (type) | |
7484 | return type; | |
7485 | ||
7486 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 7487 | |
e142c38c | 7488 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
7489 | if (attr_byte_size) |
7490 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 7491 | else |
8b2dbe47 KB |
7492 | byte_size = cu_header->addr_size; |
7493 | ||
e142c38c | 7494 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
7495 | if (attr_address_class) |
7496 | addr_class = DW_UNSND (attr_address_class); | |
7497 | else | |
7498 | addr_class = DW_ADDR_none; | |
7499 | ||
7500 | /* If the pointer size or address class is different than the | |
7501 | default, create a type variant marked as such and set the | |
7502 | length accordingly. */ | |
7503 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 7504 | { |
5e2b427d | 7505 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
7506 | { |
7507 | int type_flags; | |
7508 | ||
849957d9 | 7509 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 7510 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
7511 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
7512 | == 0); | |
8b2dbe47 KB |
7513 | type = make_type_with_address_space (type, type_flags); |
7514 | } | |
7515 | else if (TYPE_LENGTH (type) != byte_size) | |
7516 | { | |
e2e0b3e5 | 7517 | complaint (&symfile_complaints, _("invalid pointer size %d"), byte_size); |
8b2dbe47 | 7518 | } |
6e70227d | 7519 | else |
9a619af0 MS |
7520 | { |
7521 | /* Should we also complain about unhandled address classes? */ | |
7522 | } | |
c906108c | 7523 | } |
8b2dbe47 KB |
7524 | |
7525 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 7526 | return set_die_type (die, type, cu); |
c906108c SS |
7527 | } |
7528 | ||
7529 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
7530 | the user defined type vector. */ | |
7531 | ||
f792889a | 7532 | static struct type * |
e7c27a73 | 7533 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7534 | { |
7535 | struct type *type; | |
7536 | struct type *to_type; | |
7537 | struct type *domain; | |
7538 | ||
e7c27a73 DJ |
7539 | to_type = die_type (die, cu); |
7540 | domain = die_containing_type (die, cu); | |
0d5de010 | 7541 | |
7e314c57 JK |
7542 | /* The calls above may have already set the type for this DIE. */ |
7543 | type = get_die_type (die, cu); | |
7544 | if (type) | |
7545 | return type; | |
7546 | ||
0d5de010 DJ |
7547 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
7548 | type = lookup_methodptr_type (to_type); | |
7549 | else | |
7550 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 7551 | |
f792889a | 7552 | return set_die_type (die, type, cu); |
c906108c SS |
7553 | } |
7554 | ||
7555 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
7556 | the user defined type vector. */ | |
7557 | ||
f792889a | 7558 | static struct type * |
e7c27a73 | 7559 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7560 | { |
e7c27a73 | 7561 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 7562 | struct type *type, *target_type; |
c906108c SS |
7563 | struct attribute *attr; |
7564 | ||
7e314c57 JK |
7565 | target_type = die_type (die, cu); |
7566 | ||
7567 | /* The die_type call above may have already set the type for this DIE. */ | |
7568 | type = get_die_type (die, cu); | |
7569 | if (type) | |
7570 | return type; | |
7571 | ||
7572 | type = lookup_reference_type (target_type); | |
e142c38c | 7573 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7574 | if (attr) |
7575 | { | |
7576 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7577 | } | |
7578 | else | |
7579 | { | |
107d2387 | 7580 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 7581 | } |
f792889a | 7582 | return set_die_type (die, type, cu); |
c906108c SS |
7583 | } |
7584 | ||
f792889a | 7585 | static struct type * |
e7c27a73 | 7586 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7587 | { |
f792889a | 7588 | struct type *base_type, *cv_type; |
c906108c | 7589 | |
e7c27a73 | 7590 | base_type = die_type (die, cu); |
7e314c57 JK |
7591 | |
7592 | /* The die_type call above may have already set the type for this DIE. */ | |
7593 | cv_type = get_die_type (die, cu); | |
7594 | if (cv_type) | |
7595 | return cv_type; | |
7596 | ||
f792889a DJ |
7597 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
7598 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
7599 | } |
7600 | ||
f792889a | 7601 | static struct type * |
e7c27a73 | 7602 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7603 | { |
f792889a | 7604 | struct type *base_type, *cv_type; |
c906108c | 7605 | |
e7c27a73 | 7606 | base_type = die_type (die, cu); |
7e314c57 JK |
7607 | |
7608 | /* The die_type call above may have already set the type for this DIE. */ | |
7609 | cv_type = get_die_type (die, cu); | |
7610 | if (cv_type) | |
7611 | return cv_type; | |
7612 | ||
f792889a DJ |
7613 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
7614 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
7615 | } |
7616 | ||
7617 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
7618 | the user defined type vector. It isn't really a user defined type, | |
7619 | but it behaves like one, with other DIE's using an AT_user_def_type | |
7620 | attribute to reference it. */ | |
7621 | ||
f792889a | 7622 | static struct type * |
e7c27a73 | 7623 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7624 | { |
e7c27a73 | 7625 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 7626 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
7627 | struct type *type, *range_type, *index_type, *char_type; |
7628 | struct attribute *attr; | |
7629 | unsigned int length; | |
7630 | ||
e142c38c | 7631 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
7632 | if (attr) |
7633 | { | |
7634 | length = DW_UNSND (attr); | |
7635 | } | |
7636 | else | |
7637 | { | |
b21b22e0 | 7638 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 7639 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
7640 | if (attr) |
7641 | { | |
7642 | length = DW_UNSND (attr); | |
7643 | } | |
7644 | else | |
7645 | { | |
7646 | length = 1; | |
7647 | } | |
c906108c | 7648 | } |
6ccb9162 | 7649 | |
46bf5051 | 7650 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 7651 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
7652 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
7653 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 7654 | |
f792889a | 7655 | return set_die_type (die, type, cu); |
c906108c SS |
7656 | } |
7657 | ||
7658 | /* Handle DIES due to C code like: | |
7659 | ||
7660 | struct foo | |
c5aa993b JM |
7661 | { |
7662 | int (*funcp)(int a, long l); | |
7663 | int b; | |
7664 | }; | |
c906108c SS |
7665 | |
7666 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 7667 | */ |
c906108c | 7668 | |
f792889a | 7669 | static struct type * |
e7c27a73 | 7670 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7671 | { |
7672 | struct type *type; /* Type that this function returns */ | |
7673 | struct type *ftype; /* Function that returns above type */ | |
7674 | struct attribute *attr; | |
7675 | ||
e7c27a73 | 7676 | type = die_type (die, cu); |
7e314c57 JK |
7677 | |
7678 | /* The die_type call above may have already set the type for this DIE. */ | |
7679 | ftype = get_die_type (die, cu); | |
7680 | if (ftype) | |
7681 | return ftype; | |
7682 | ||
0c8b41f1 | 7683 | ftype = lookup_function_type (type); |
c906108c | 7684 | |
5b8101ae | 7685 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 7686 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 7687 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 7688 | || cu->language == language_cplus |
5b8101ae PM |
7689 | || cu->language == language_java |
7690 | || cu->language == language_pascal) | |
876cecd0 | 7691 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
7692 | else if (producer_is_realview (cu->producer)) |
7693 | /* RealView does not emit DW_AT_prototyped. We can not | |
7694 | distinguish prototyped and unprototyped functions; default to | |
7695 | prototyped, since that is more common in modern code (and | |
7696 | RealView warns about unprototyped functions). */ | |
7697 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 7698 | |
c055b101 CV |
7699 | /* Store the calling convention in the type if it's available in |
7700 | the subroutine die. Otherwise set the calling convention to | |
7701 | the default value DW_CC_normal. */ | |
7702 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
7703 | TYPE_CALLING_CONVENTION (ftype) = attr ? DW_UNSND (attr) : DW_CC_normal; | |
76c10ea2 GM |
7704 | |
7705 | /* We need to add the subroutine type to the die immediately so | |
7706 | we don't infinitely recurse when dealing with parameters | |
7707 | declared as the same subroutine type. */ | |
7708 | set_die_type (die, ftype, cu); | |
6e70227d | 7709 | |
639d11d3 | 7710 | if (die->child != NULL) |
c906108c | 7711 | { |
8072405b | 7712 | struct type *void_type = objfile_type (cu->objfile)->builtin_void; |
c906108c | 7713 | struct die_info *child_die; |
8072405b | 7714 | int nparams, iparams; |
c906108c SS |
7715 | |
7716 | /* Count the number of parameters. | |
7717 | FIXME: GDB currently ignores vararg functions, but knows about | |
7718 | vararg member functions. */ | |
8072405b | 7719 | nparams = 0; |
639d11d3 | 7720 | child_die = die->child; |
c906108c SS |
7721 | while (child_die && child_die->tag) |
7722 | { | |
7723 | if (child_die->tag == DW_TAG_formal_parameter) | |
7724 | nparams++; | |
7725 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 7726 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
7727 | child_die = sibling_die (child_die); |
7728 | } | |
7729 | ||
7730 | /* Allocate storage for parameters and fill them in. */ | |
7731 | TYPE_NFIELDS (ftype) = nparams; | |
7732 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 7733 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 7734 | |
8072405b JK |
7735 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
7736 | even if we error out during the parameters reading below. */ | |
7737 | for (iparams = 0; iparams < nparams; iparams++) | |
7738 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
7739 | ||
7740 | iparams = 0; | |
639d11d3 | 7741 | child_die = die->child; |
c906108c SS |
7742 | while (child_die && child_die->tag) |
7743 | { | |
7744 | if (child_die->tag == DW_TAG_formal_parameter) | |
7745 | { | |
3ce3b1ba PA |
7746 | struct type *arg_type; |
7747 | ||
7748 | /* DWARF version 2 has no clean way to discern C++ | |
7749 | static and non-static member functions. G++ helps | |
7750 | GDB by marking the first parameter for non-static | |
7751 | member functions (which is the this pointer) as | |
7752 | artificial. We pass this information to | |
7753 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
7754 | ||
7755 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
7756 | 4.5 does not yet generate. */ | |
e142c38c | 7757 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
7758 | if (attr) |
7759 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
7760 | else | |
418835cc KS |
7761 | { |
7762 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
7763 | ||
7764 | /* GCC/43521: In java, the formal parameter | |
7765 | "this" is sometimes not marked with DW_AT_artificial. */ | |
7766 | if (cu->language == language_java) | |
7767 | { | |
7768 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 7769 | |
418835cc KS |
7770 | if (name && !strcmp (name, "this")) |
7771 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
7772 | } | |
7773 | } | |
3ce3b1ba PA |
7774 | arg_type = die_type (child_die, cu); |
7775 | ||
7776 | /* RealView does not mark THIS as const, which the testsuite | |
7777 | expects. GCC marks THIS as const in method definitions, | |
7778 | but not in the class specifications (GCC PR 43053). */ | |
7779 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
7780 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
7781 | { | |
7782 | int is_this = 0; | |
7783 | struct dwarf2_cu *arg_cu = cu; | |
7784 | const char *name = dwarf2_name (child_die, cu); | |
7785 | ||
7786 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
7787 | if (attr) | |
7788 | { | |
7789 | /* If the compiler emits this, use it. */ | |
7790 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
7791 | is_this = 1; | |
7792 | } | |
7793 | else if (name && strcmp (name, "this") == 0) | |
7794 | /* Function definitions will have the argument names. */ | |
7795 | is_this = 1; | |
7796 | else if (name == NULL && iparams == 0) | |
7797 | /* Declarations may not have the names, so like | |
7798 | elsewhere in GDB, assume an artificial first | |
7799 | argument is "this". */ | |
7800 | is_this = 1; | |
7801 | ||
7802 | if (is_this) | |
7803 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
7804 | arg_type, 0); | |
7805 | } | |
7806 | ||
7807 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
7808 | iparams++; |
7809 | } | |
7810 | child_die = sibling_die (child_die); | |
7811 | } | |
7812 | } | |
7813 | ||
76c10ea2 | 7814 | return ftype; |
c906108c SS |
7815 | } |
7816 | ||
f792889a | 7817 | static struct type * |
e7c27a73 | 7818 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7819 | { |
e7c27a73 | 7820 | struct objfile *objfile = cu->objfile; |
0114d602 | 7821 | const char *name = NULL; |
f792889a | 7822 | struct type *this_type; |
c906108c | 7823 | |
94af9270 | 7824 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 7825 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
7826 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
7827 | TYPE_NAME (this_type) = (char *) name; | |
f792889a DJ |
7828 | set_die_type (die, this_type, cu); |
7829 | TYPE_TARGET_TYPE (this_type) = die_type (die, cu); | |
7830 | return this_type; | |
c906108c SS |
7831 | } |
7832 | ||
7833 | /* Find a representation of a given base type and install | |
7834 | it in the TYPE field of the die. */ | |
7835 | ||
f792889a | 7836 | static struct type * |
e7c27a73 | 7837 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7838 | { |
e7c27a73 | 7839 | struct objfile *objfile = cu->objfile; |
c906108c SS |
7840 | struct type *type; |
7841 | struct attribute *attr; | |
7842 | int encoding = 0, size = 0; | |
39cbfefa | 7843 | char *name; |
6ccb9162 UW |
7844 | enum type_code code = TYPE_CODE_INT; |
7845 | int type_flags = 0; | |
7846 | struct type *target_type = NULL; | |
c906108c | 7847 | |
e142c38c | 7848 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
7849 | if (attr) |
7850 | { | |
7851 | encoding = DW_UNSND (attr); | |
7852 | } | |
e142c38c | 7853 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7854 | if (attr) |
7855 | { | |
7856 | size = DW_UNSND (attr); | |
7857 | } | |
39cbfefa | 7858 | name = dwarf2_name (die, cu); |
6ccb9162 | 7859 | if (!name) |
c906108c | 7860 | { |
6ccb9162 UW |
7861 | complaint (&symfile_complaints, |
7862 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 7863 | } |
6ccb9162 UW |
7864 | |
7865 | switch (encoding) | |
c906108c | 7866 | { |
6ccb9162 UW |
7867 | case DW_ATE_address: |
7868 | /* Turn DW_ATE_address into a void * pointer. */ | |
7869 | code = TYPE_CODE_PTR; | |
7870 | type_flags |= TYPE_FLAG_UNSIGNED; | |
7871 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
7872 | break; | |
7873 | case DW_ATE_boolean: | |
7874 | code = TYPE_CODE_BOOL; | |
7875 | type_flags |= TYPE_FLAG_UNSIGNED; | |
7876 | break; | |
7877 | case DW_ATE_complex_float: | |
7878 | code = TYPE_CODE_COMPLEX; | |
7879 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
7880 | break; | |
7881 | case DW_ATE_decimal_float: | |
7882 | code = TYPE_CODE_DECFLOAT; | |
7883 | break; | |
7884 | case DW_ATE_float: | |
7885 | code = TYPE_CODE_FLT; | |
7886 | break; | |
7887 | case DW_ATE_signed: | |
7888 | break; | |
7889 | case DW_ATE_unsigned: | |
7890 | type_flags |= TYPE_FLAG_UNSIGNED; | |
7891 | break; | |
7892 | case DW_ATE_signed_char: | |
6e70227d | 7893 | if (cu->language == language_ada || cu->language == language_m2 |
868a0084 | 7894 | || cu->language == language_pascal) |
6ccb9162 UW |
7895 | code = TYPE_CODE_CHAR; |
7896 | break; | |
7897 | case DW_ATE_unsigned_char: | |
868a0084 PM |
7898 | if (cu->language == language_ada || cu->language == language_m2 |
7899 | || cu->language == language_pascal) | |
6ccb9162 UW |
7900 | code = TYPE_CODE_CHAR; |
7901 | type_flags |= TYPE_FLAG_UNSIGNED; | |
7902 | break; | |
75079b2b TT |
7903 | case DW_ATE_UTF: |
7904 | /* We just treat this as an integer and then recognize the | |
7905 | type by name elsewhere. */ | |
7906 | break; | |
7907 | ||
6ccb9162 UW |
7908 | default: |
7909 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
7910 | dwarf_type_encoding_name (encoding)); | |
7911 | break; | |
c906108c | 7912 | } |
6ccb9162 | 7913 | |
0114d602 DJ |
7914 | type = init_type (code, size, type_flags, NULL, objfile); |
7915 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
7916 | TYPE_TARGET_TYPE (type) = target_type; |
7917 | ||
0114d602 | 7918 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 7919 | TYPE_NOSIGN (type) = 1; |
0114d602 | 7920 | |
f792889a | 7921 | return set_die_type (die, type, cu); |
c906108c SS |
7922 | } |
7923 | ||
a02abb62 JB |
7924 | /* Read the given DW_AT_subrange DIE. */ |
7925 | ||
f792889a | 7926 | static struct type * |
a02abb62 JB |
7927 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
7928 | { | |
5e2b427d | 7929 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
a02abb62 JB |
7930 | struct type *base_type; |
7931 | struct type *range_type; | |
7932 | struct attribute *attr; | |
43bbcdc2 PH |
7933 | LONGEST low = 0; |
7934 | LONGEST high = -1; | |
39cbfefa | 7935 | char *name; |
43bbcdc2 | 7936 | LONGEST negative_mask; |
e77813c8 | 7937 | |
a02abb62 | 7938 | base_type = die_type (die, cu); |
953ac07e JK |
7939 | /* Preserve BASE_TYPE's original type, just set its LENGTH. */ |
7940 | check_typedef (base_type); | |
a02abb62 | 7941 | |
7e314c57 JK |
7942 | /* The die_type call above may have already set the type for this DIE. */ |
7943 | range_type = get_die_type (die, cu); | |
7944 | if (range_type) | |
7945 | return range_type; | |
7946 | ||
e142c38c | 7947 | if (cu->language == language_fortran) |
6e70227d | 7948 | { |
a02abb62 JB |
7949 | /* FORTRAN implies a lower bound of 1, if not given. */ |
7950 | low = 1; | |
7951 | } | |
7952 | ||
dd5e6932 DJ |
7953 | /* FIXME: For variable sized arrays either of these could be |
7954 | a variable rather than a constant value. We'll allow it, | |
7955 | but we don't know how to handle it. */ | |
e142c38c | 7956 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
7957 | if (attr) |
7958 | low = dwarf2_get_attr_constant_value (attr, 0); | |
7959 | ||
e142c38c | 7960 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 7961 | if (attr) |
6e70227d | 7962 | { |
e77813c8 | 7963 | if (attr->form == DW_FORM_block1 || is_ref_attr (attr)) |
a02abb62 JB |
7964 | { |
7965 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 7966 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
7967 | FIXME: GDB does not yet know how to handle dynamic |
7968 | arrays properly, treat them as arrays with unspecified | |
7969 | length for now. | |
7970 | ||
7971 | FIXME: jimb/2003-09-22: GDB does not really know | |
7972 | how to handle arrays of unspecified length | |
7973 | either; we just represent them as zero-length | |
7974 | arrays. Choose an appropriate upper bound given | |
7975 | the lower bound we've computed above. */ | |
7976 | high = low - 1; | |
7977 | } | |
7978 | else | |
7979 | high = dwarf2_get_attr_constant_value (attr, 1); | |
7980 | } | |
e77813c8 PM |
7981 | else |
7982 | { | |
7983 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
7984 | if (attr) | |
7985 | { | |
7986 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
7987 | high = low + count - 1; | |
7988 | } | |
7989 | } | |
7990 | ||
7991 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
7992 | without specifying a base type. | |
7993 | In that case, the base type must be set to the type of | |
7994 | the lower bound, upper bound or count, in that order, if any of these | |
7995 | three attributes references an object that has a type. | |
7996 | If no base type is found, the Dwarf-2 specifications say that | |
7997 | a signed integer type of size equal to the size of an address should | |
7998 | be used. | |
7999 | For the following C code: `extern char gdb_int [];' | |
8000 | GCC produces an empty range DIE. | |
8001 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
8002 | high bound or count are not yet handled by this code. | |
8003 | */ | |
8004 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) | |
8005 | { | |
8006 | struct objfile *objfile = cu->objfile; | |
8007 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8008 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
8009 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
8010 | ||
8011 | /* Test "int", "long int", and "long long int" objfile types, | |
8012 | and select the first one having a size above or equal to the | |
8013 | architecture address size. */ | |
8014 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
8015 | base_type = int_type; | |
8016 | else | |
8017 | { | |
8018 | int_type = objfile_type (objfile)->builtin_long; | |
8019 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
8020 | base_type = int_type; | |
8021 | else | |
8022 | { | |
8023 | int_type = objfile_type (objfile)->builtin_long_long; | |
8024 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
8025 | base_type = int_type; | |
8026 | } | |
8027 | } | |
8028 | } | |
a02abb62 | 8029 | |
6e70227d | 8030 | negative_mask = |
43bbcdc2 PH |
8031 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
8032 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
8033 | low |= negative_mask; | |
8034 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
8035 | high |= negative_mask; | |
8036 | ||
a02abb62 JB |
8037 | range_type = create_range_type (NULL, base_type, low, high); |
8038 | ||
bbb0eef6 JK |
8039 | /* Mark arrays with dynamic length at least as an array of unspecified |
8040 | length. GDB could check the boundary but before it gets implemented at | |
8041 | least allow accessing the array elements. */ | |
8042 | if (attr && attr->form == DW_FORM_block1) | |
8043 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
8044 | ||
39cbfefa DJ |
8045 | name = dwarf2_name (die, cu); |
8046 | if (name) | |
8047 | TYPE_NAME (range_type) = name; | |
6e70227d | 8048 | |
e142c38c | 8049 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
8050 | if (attr) |
8051 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
8052 | ||
7e314c57 JK |
8053 | set_die_type (die, range_type, cu); |
8054 | ||
8055 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
8056 | set_descriptive_type (range_type, die, cu); |
8057 | ||
7e314c57 | 8058 | return range_type; |
a02abb62 | 8059 | } |
6e70227d | 8060 | |
f792889a | 8061 | static struct type * |
81a17f79 JB |
8062 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
8063 | { | |
8064 | struct type *type; | |
81a17f79 | 8065 | |
81a17f79 JB |
8066 | /* For now, we only support the C meaning of an unspecified type: void. */ |
8067 | ||
0114d602 DJ |
8068 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
8069 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 8070 | |
f792889a | 8071 | return set_die_type (die, type, cu); |
81a17f79 | 8072 | } |
a02abb62 | 8073 | |
51545339 DJ |
8074 | /* Trivial hash function for die_info: the hash value of a DIE |
8075 | is its offset in .debug_info for this objfile. */ | |
8076 | ||
8077 | static hashval_t | |
8078 | die_hash (const void *item) | |
8079 | { | |
8080 | const struct die_info *die = item; | |
9a619af0 | 8081 | |
51545339 DJ |
8082 | return die->offset; |
8083 | } | |
8084 | ||
8085 | /* Trivial comparison function for die_info structures: two DIEs | |
8086 | are equal if they have the same offset. */ | |
8087 | ||
8088 | static int | |
8089 | die_eq (const void *item_lhs, const void *item_rhs) | |
8090 | { | |
8091 | const struct die_info *die_lhs = item_lhs; | |
8092 | const struct die_info *die_rhs = item_rhs; | |
9a619af0 | 8093 | |
51545339 DJ |
8094 | return die_lhs->offset == die_rhs->offset; |
8095 | } | |
8096 | ||
c906108c SS |
8097 | /* Read a whole compilation unit into a linked list of dies. */ |
8098 | ||
f9aca02d | 8099 | static struct die_info * |
93311388 | 8100 | read_comp_unit (gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 8101 | { |
93311388 | 8102 | struct die_reader_specs reader_specs; |
98bfdba5 | 8103 | int read_abbrevs = 0; |
1d9ec526 | 8104 | struct cleanup *back_to = NULL; |
98bfdba5 PA |
8105 | struct die_info *die; |
8106 | ||
8107 | if (cu->dwarf2_abbrevs == NULL) | |
8108 | { | |
8109 | dwarf2_read_abbrevs (cu->objfile->obfd, cu); | |
8110 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
8111 | read_abbrevs = 1; | |
8112 | } | |
93311388 | 8113 | |
348e048f | 8114 | gdb_assert (cu->die_hash == NULL); |
51545339 DJ |
8115 | cu->die_hash |
8116 | = htab_create_alloc_ex (cu->header.length / 12, | |
8117 | die_hash, | |
8118 | die_eq, | |
8119 | NULL, | |
8120 | &cu->comp_unit_obstack, | |
8121 | hashtab_obstack_allocate, | |
8122 | dummy_obstack_deallocate); | |
8123 | ||
93311388 DE |
8124 | init_cu_die_reader (&reader_specs, cu); |
8125 | ||
98bfdba5 PA |
8126 | die = read_die_and_children (&reader_specs, info_ptr, &info_ptr, NULL); |
8127 | ||
8128 | if (read_abbrevs) | |
8129 | do_cleanups (back_to); | |
8130 | ||
8131 | return die; | |
639d11d3 DC |
8132 | } |
8133 | ||
d97bc12b DE |
8134 | /* Main entry point for reading a DIE and all children. |
8135 | Read the DIE and dump it if requested. */ | |
8136 | ||
8137 | static struct die_info * | |
93311388 DE |
8138 | read_die_and_children (const struct die_reader_specs *reader, |
8139 | gdb_byte *info_ptr, | |
d97bc12b DE |
8140 | gdb_byte **new_info_ptr, |
8141 | struct die_info *parent) | |
8142 | { | |
93311388 | 8143 | struct die_info *result = read_die_and_children_1 (reader, info_ptr, |
d97bc12b DE |
8144 | new_info_ptr, parent); |
8145 | ||
8146 | if (dwarf2_die_debug) | |
8147 | { | |
348e048f DE |
8148 | fprintf_unfiltered (gdb_stdlog, |
8149 | "\nRead die from %s of %s:\n", | |
8150 | reader->buffer == dwarf2_per_objfile->info.buffer | |
8151 | ? ".debug_info" | |
8152 | : reader->buffer == dwarf2_per_objfile->types.buffer | |
8153 | ? ".debug_types" | |
8154 | : "unknown section", | |
8155 | reader->abfd->filename); | |
d97bc12b DE |
8156 | dump_die (result, dwarf2_die_debug); |
8157 | } | |
8158 | ||
8159 | return result; | |
8160 | } | |
8161 | ||
639d11d3 DC |
8162 | /* Read a single die and all its descendents. Set the die's sibling |
8163 | field to NULL; set other fields in the die correctly, and set all | |
8164 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
8165 | location of the info_ptr after reading all of those dies. PARENT | |
8166 | is the parent of the die in question. */ | |
8167 | ||
8168 | static struct die_info * | |
93311388 DE |
8169 | read_die_and_children_1 (const struct die_reader_specs *reader, |
8170 | gdb_byte *info_ptr, | |
d97bc12b DE |
8171 | gdb_byte **new_info_ptr, |
8172 | struct die_info *parent) | |
639d11d3 DC |
8173 | { |
8174 | struct die_info *die; | |
fe1b8b76 | 8175 | gdb_byte *cur_ptr; |
639d11d3 DC |
8176 | int has_children; |
8177 | ||
93311388 | 8178 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
8179 | if (die == NULL) |
8180 | { | |
8181 | *new_info_ptr = cur_ptr; | |
8182 | return NULL; | |
8183 | } | |
93311388 | 8184 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
8185 | |
8186 | if (has_children) | |
348e048f | 8187 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
8188 | else |
8189 | { | |
8190 | die->child = NULL; | |
8191 | *new_info_ptr = cur_ptr; | |
8192 | } | |
8193 | ||
8194 | die->sibling = NULL; | |
8195 | die->parent = parent; | |
8196 | return die; | |
8197 | } | |
8198 | ||
8199 | /* Read a die, all of its descendents, and all of its siblings; set | |
8200 | all of the fields of all of the dies correctly. Arguments are as | |
8201 | in read_die_and_children. */ | |
8202 | ||
8203 | static struct die_info * | |
93311388 DE |
8204 | read_die_and_siblings (const struct die_reader_specs *reader, |
8205 | gdb_byte *info_ptr, | |
fe1b8b76 | 8206 | gdb_byte **new_info_ptr, |
639d11d3 DC |
8207 | struct die_info *parent) |
8208 | { | |
8209 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 8210 | gdb_byte *cur_ptr; |
639d11d3 | 8211 | |
c906108c | 8212 | cur_ptr = info_ptr; |
639d11d3 DC |
8213 | first_die = last_sibling = NULL; |
8214 | ||
8215 | while (1) | |
c906108c | 8216 | { |
639d11d3 | 8217 | struct die_info *die |
93311388 | 8218 | = read_die_and_children_1 (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 8219 | |
1d325ec1 | 8220 | if (die == NULL) |
c906108c | 8221 | { |
639d11d3 DC |
8222 | *new_info_ptr = cur_ptr; |
8223 | return first_die; | |
c906108c | 8224 | } |
1d325ec1 DJ |
8225 | |
8226 | if (!first_die) | |
8227 | first_die = die; | |
c906108c | 8228 | else |
1d325ec1 DJ |
8229 | last_sibling->sibling = die; |
8230 | ||
8231 | last_sibling = die; | |
c906108c | 8232 | } |
c906108c SS |
8233 | } |
8234 | ||
93311388 DE |
8235 | /* Read the die from the .debug_info section buffer. Set DIEP to |
8236 | point to a newly allocated die with its information, except for its | |
8237 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
8238 | whether the die has children or not. */ | |
8239 | ||
8240 | static gdb_byte * | |
8241 | read_full_die (const struct die_reader_specs *reader, | |
8242 | struct die_info **diep, gdb_byte *info_ptr, | |
8243 | int *has_children) | |
8244 | { | |
8245 | unsigned int abbrev_number, bytes_read, i, offset; | |
8246 | struct abbrev_info *abbrev; | |
8247 | struct die_info *die; | |
8248 | struct dwarf2_cu *cu = reader->cu; | |
8249 | bfd *abfd = reader->abfd; | |
8250 | ||
8251 | offset = info_ptr - reader->buffer; | |
8252 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8253 | info_ptr += bytes_read; | |
8254 | if (!abbrev_number) | |
8255 | { | |
8256 | *diep = NULL; | |
8257 | *has_children = 0; | |
8258 | return info_ptr; | |
8259 | } | |
8260 | ||
8261 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
8262 | if (!abbrev) | |
348e048f DE |
8263 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
8264 | abbrev_number, | |
8265 | bfd_get_filename (abfd)); | |
8266 | ||
93311388 DE |
8267 | die = dwarf_alloc_die (cu, abbrev->num_attrs); |
8268 | die->offset = offset; | |
8269 | die->tag = abbrev->tag; | |
8270 | die->abbrev = abbrev_number; | |
8271 | ||
8272 | die->num_attrs = abbrev->num_attrs; | |
8273 | ||
8274 | for (i = 0; i < abbrev->num_attrs; ++i) | |
8275 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
8276 | abfd, info_ptr, cu); | |
8277 | ||
8278 | *diep = die; | |
8279 | *has_children = abbrev->has_children; | |
8280 | return info_ptr; | |
8281 | } | |
8282 | ||
c906108c SS |
8283 | /* In DWARF version 2, the description of the debugging information is |
8284 | stored in a separate .debug_abbrev section. Before we read any | |
8285 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
8286 | in a hash table. This function also sets flags in CU describing |
8287 | the data found in the abbrev table. */ | |
c906108c SS |
8288 | |
8289 | static void | |
e7c27a73 | 8290 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 8291 | { |
e7c27a73 | 8292 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 8293 | gdb_byte *abbrev_ptr; |
c906108c SS |
8294 | struct abbrev_info *cur_abbrev; |
8295 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
8296 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
8297 | struct attr_abbrev *cur_attrs; |
8298 | unsigned int allocated_attrs; | |
c906108c | 8299 | |
57349743 | 8300 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
8301 | obstack_init (&cu->abbrev_obstack); |
8302 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
8303 | (ABBREV_HASH_SIZE | |
8304 | * sizeof (struct abbrev_info *))); | |
8305 | memset (cu->dwarf2_abbrevs, 0, | |
8306 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 8307 | |
be391dca TT |
8308 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
8309 | &dwarf2_per_objfile->abbrev); | |
dce234bc | 8310 | abbrev_ptr = dwarf2_per_objfile->abbrev.buffer + cu_header->abbrev_offset; |
c906108c SS |
8311 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
8312 | abbrev_ptr += bytes_read; | |
8313 | ||
f3dd6933 DJ |
8314 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8315 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 8316 | |
c906108c SS |
8317 | /* loop until we reach an abbrev number of 0 */ |
8318 | while (abbrev_number) | |
8319 | { | |
f3dd6933 | 8320 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
8321 | |
8322 | /* read in abbrev header */ | |
8323 | cur_abbrev->number = abbrev_number; | |
8324 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8325 | abbrev_ptr += bytes_read; | |
8326 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
8327 | abbrev_ptr += 1; | |
8328 | ||
72bf9492 DJ |
8329 | if (cur_abbrev->tag == DW_TAG_namespace) |
8330 | cu->has_namespace_info = 1; | |
8331 | ||
c906108c SS |
8332 | /* now read in declarations */ |
8333 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8334 | abbrev_ptr += bytes_read; | |
8335 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8336 | abbrev_ptr += bytes_read; | |
8337 | while (abbrev_name) | |
8338 | { | |
f3dd6933 | 8339 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 8340 | { |
f3dd6933 DJ |
8341 | allocated_attrs += ATTR_ALLOC_CHUNK; |
8342 | cur_attrs | |
8343 | = xrealloc (cur_attrs, (allocated_attrs | |
8344 | * sizeof (struct attr_abbrev))); | |
c906108c | 8345 | } |
ae038cb0 DJ |
8346 | |
8347 | /* Record whether this compilation unit might have | |
8348 | inter-compilation-unit references. If we don't know what form | |
8349 | this attribute will have, then it might potentially be a | |
8350 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
8351 | references. */ | |
8352 | ||
8353 | if (abbrev_form == DW_FORM_ref_addr | |
8354 | || abbrev_form == DW_FORM_indirect) | |
8355 | cu->has_form_ref_addr = 1; | |
8356 | ||
f3dd6933 DJ |
8357 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
8358 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
8359 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
8360 | abbrev_ptr += bytes_read; | |
8361 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8362 | abbrev_ptr += bytes_read; | |
8363 | } | |
8364 | ||
f3dd6933 DJ |
8365 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
8366 | (cur_abbrev->num_attrs | |
8367 | * sizeof (struct attr_abbrev))); | |
8368 | memcpy (cur_abbrev->attrs, cur_attrs, | |
8369 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
8370 | ||
c906108c | 8371 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
8372 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
8373 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
8374 | |
8375 | /* Get next abbreviation. | |
8376 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
8377 | always properly terminated with an abbrev number of 0. |
8378 | Exit loop if we encounter an abbreviation which we have | |
8379 | already read (which means we are about to read the abbreviations | |
8380 | for the next compile unit) or if the end of the abbreviation | |
8381 | table is reached. */ | |
dce234bc PP |
8382 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev.buffer) |
8383 | >= dwarf2_per_objfile->abbrev.size) | |
c906108c SS |
8384 | break; |
8385 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8386 | abbrev_ptr += bytes_read; | |
e7c27a73 | 8387 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
8388 | break; |
8389 | } | |
f3dd6933 DJ |
8390 | |
8391 | xfree (cur_attrs); | |
c906108c SS |
8392 | } |
8393 | ||
f3dd6933 | 8394 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 8395 | |
c906108c | 8396 | static void |
f3dd6933 | 8397 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 8398 | { |
f3dd6933 | 8399 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 8400 | |
f3dd6933 DJ |
8401 | obstack_free (&cu->abbrev_obstack, NULL); |
8402 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
8403 | } |
8404 | ||
8405 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
8406 | ||
8407 | static struct abbrev_info * | |
e7c27a73 | 8408 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
8409 | { |
8410 | unsigned int hash_number; | |
8411 | struct abbrev_info *abbrev; | |
8412 | ||
8413 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 8414 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
8415 | |
8416 | while (abbrev) | |
8417 | { | |
8418 | if (abbrev->number == number) | |
8419 | return abbrev; | |
8420 | else | |
8421 | abbrev = abbrev->next; | |
8422 | } | |
8423 | return NULL; | |
8424 | } | |
8425 | ||
72bf9492 DJ |
8426 | /* Returns nonzero if TAG represents a type that we might generate a partial |
8427 | symbol for. */ | |
8428 | ||
8429 | static int | |
8430 | is_type_tag_for_partial (int tag) | |
8431 | { | |
8432 | switch (tag) | |
8433 | { | |
8434 | #if 0 | |
8435 | /* Some types that would be reasonable to generate partial symbols for, | |
8436 | that we don't at present. */ | |
8437 | case DW_TAG_array_type: | |
8438 | case DW_TAG_file_type: | |
8439 | case DW_TAG_ptr_to_member_type: | |
8440 | case DW_TAG_set_type: | |
8441 | case DW_TAG_string_type: | |
8442 | case DW_TAG_subroutine_type: | |
8443 | #endif | |
8444 | case DW_TAG_base_type: | |
8445 | case DW_TAG_class_type: | |
680b30c7 | 8446 | case DW_TAG_interface_type: |
72bf9492 DJ |
8447 | case DW_TAG_enumeration_type: |
8448 | case DW_TAG_structure_type: | |
8449 | case DW_TAG_subrange_type: | |
8450 | case DW_TAG_typedef: | |
8451 | case DW_TAG_union_type: | |
8452 | return 1; | |
8453 | default: | |
8454 | return 0; | |
8455 | } | |
8456 | } | |
8457 | ||
8458 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
8459 | ||
8460 | static struct partial_die_info * | |
93311388 DE |
8461 | load_partial_dies (bfd *abfd, gdb_byte *buffer, gdb_byte *info_ptr, |
8462 | int building_psymtab, struct dwarf2_cu *cu) | |
72bf9492 DJ |
8463 | { |
8464 | struct partial_die_info *part_die; | |
8465 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
8466 | struct abbrev_info *abbrev; | |
8467 | unsigned int bytes_read; | |
5afb4e99 | 8468 | unsigned int load_all = 0; |
72bf9492 DJ |
8469 | |
8470 | int nesting_level = 1; | |
8471 | ||
8472 | parent_die = NULL; | |
8473 | last_die = NULL; | |
8474 | ||
5afb4e99 DJ |
8475 | if (cu->per_cu && cu->per_cu->load_all_dies) |
8476 | load_all = 1; | |
8477 | ||
72bf9492 DJ |
8478 | cu->partial_dies |
8479 | = htab_create_alloc_ex (cu->header.length / 12, | |
8480 | partial_die_hash, | |
8481 | partial_die_eq, | |
8482 | NULL, | |
8483 | &cu->comp_unit_obstack, | |
8484 | hashtab_obstack_allocate, | |
8485 | dummy_obstack_deallocate); | |
8486 | ||
8487 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
8488 | sizeof (struct partial_die_info)); | |
8489 | ||
8490 | while (1) | |
8491 | { | |
8492 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
8493 | ||
8494 | /* A NULL abbrev means the end of a series of children. */ | |
8495 | if (abbrev == NULL) | |
8496 | { | |
8497 | if (--nesting_level == 0) | |
8498 | { | |
8499 | /* PART_DIE was probably the last thing allocated on the | |
8500 | comp_unit_obstack, so we could call obstack_free | |
8501 | here. We don't do that because the waste is small, | |
8502 | and will be cleaned up when we're done with this | |
8503 | compilation unit. This way, we're also more robust | |
8504 | against other users of the comp_unit_obstack. */ | |
8505 | return first_die; | |
8506 | } | |
8507 | info_ptr += bytes_read; | |
8508 | last_die = parent_die; | |
8509 | parent_die = parent_die->die_parent; | |
8510 | continue; | |
8511 | } | |
8512 | ||
98bfdba5 PA |
8513 | /* Check for template arguments. We never save these; if |
8514 | they're seen, we just mark the parent, and go on our way. */ | |
8515 | if (parent_die != NULL | |
8516 | && cu->language == language_cplus | |
8517 | && (abbrev->tag == DW_TAG_template_type_param | |
8518 | || abbrev->tag == DW_TAG_template_value_param)) | |
8519 | { | |
8520 | parent_die->has_template_arguments = 1; | |
8521 | ||
8522 | if (!load_all) | |
8523 | { | |
8524 | /* We don't need a partial DIE for the template argument. */ | |
8525 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, | |
8526 | cu); | |
8527 | continue; | |
8528 | } | |
8529 | } | |
8530 | ||
8531 | /* We only recurse into subprograms looking for template arguments. | |
8532 | Skip their other children. */ | |
8533 | if (!load_all | |
8534 | && cu->language == language_cplus | |
8535 | && parent_die != NULL | |
8536 | && parent_die->tag == DW_TAG_subprogram) | |
8537 | { | |
8538 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); | |
8539 | continue; | |
8540 | } | |
8541 | ||
5afb4e99 DJ |
8542 | /* Check whether this DIE is interesting enough to save. Normally |
8543 | we would not be interested in members here, but there may be | |
8544 | later variables referencing them via DW_AT_specification (for | |
8545 | static members). */ | |
8546 | if (!load_all | |
8547 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 8548 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
8549 | && abbrev->tag != DW_TAG_enumerator |
8550 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 8551 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 8552 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 8553 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 8554 | && abbrev->tag != DW_TAG_module |
5afb4e99 | 8555 | && abbrev->tag != DW_TAG_member) |
72bf9492 DJ |
8556 | { |
8557 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 8558 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
72bf9492 DJ |
8559 | continue; |
8560 | } | |
8561 | ||
93311388 DE |
8562 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, abfd, |
8563 | buffer, info_ptr, cu); | |
72bf9492 DJ |
8564 | |
8565 | /* This two-pass algorithm for processing partial symbols has a | |
8566 | high cost in cache pressure. Thus, handle some simple cases | |
8567 | here which cover the majority of C partial symbols. DIEs | |
8568 | which neither have specification tags in them, nor could have | |
8569 | specification tags elsewhere pointing at them, can simply be | |
8570 | processed and discarded. | |
8571 | ||
8572 | This segment is also optional; scan_partial_symbols and | |
8573 | add_partial_symbol will handle these DIEs if we chain | |
8574 | them in normally. When compilers which do not emit large | |
8575 | quantities of duplicate debug information are more common, | |
8576 | this code can probably be removed. */ | |
8577 | ||
8578 | /* Any complete simple types at the top level (pretty much all | |
8579 | of them, for a language without namespaces), can be processed | |
8580 | directly. */ | |
8581 | if (parent_die == NULL | |
8582 | && part_die->has_specification == 0 | |
8583 | && part_die->is_declaration == 0 | |
8584 | && (part_die->tag == DW_TAG_typedef | |
8585 | || part_die->tag == DW_TAG_base_type | |
8586 | || part_die->tag == DW_TAG_subrange_type)) | |
8587 | { | |
8588 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 8589 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 DJ |
8590 | VAR_DOMAIN, LOC_TYPEDEF, |
8591 | &cu->objfile->static_psymbols, | |
8592 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
93311388 | 8593 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
8594 | continue; |
8595 | } | |
8596 | ||
8597 | /* If we're at the second level, and we're an enumerator, and | |
8598 | our parent has no specification (meaning possibly lives in a | |
8599 | namespace elsewhere), then we can add the partial symbol now | |
8600 | instead of queueing it. */ | |
8601 | if (part_die->tag == DW_TAG_enumerator | |
8602 | && parent_die != NULL | |
8603 | && parent_die->die_parent == NULL | |
8604 | && parent_die->tag == DW_TAG_enumeration_type | |
8605 | && parent_die->has_specification == 0) | |
8606 | { | |
8607 | if (part_die->name == NULL) | |
e2e0b3e5 | 8608 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
72bf9492 | 8609 | else if (building_psymtab) |
04a679b8 | 8610 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 8611 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
8612 | (cu->language == language_cplus |
8613 | || cu->language == language_java) | |
72bf9492 DJ |
8614 | ? &cu->objfile->global_psymbols |
8615 | : &cu->objfile->static_psymbols, | |
8616 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
8617 | ||
93311388 | 8618 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
8619 | continue; |
8620 | } | |
8621 | ||
8622 | /* We'll save this DIE so link it in. */ | |
8623 | part_die->die_parent = parent_die; | |
8624 | part_die->die_sibling = NULL; | |
8625 | part_die->die_child = NULL; | |
8626 | ||
8627 | if (last_die && last_die == parent_die) | |
8628 | last_die->die_child = part_die; | |
8629 | else if (last_die) | |
8630 | last_die->die_sibling = part_die; | |
8631 | ||
8632 | last_die = part_die; | |
8633 | ||
8634 | if (first_die == NULL) | |
8635 | first_die = part_die; | |
8636 | ||
8637 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
8638 | find interesting need to be in the hash table, because we | |
8639 | also have the parent/sibling/child chains; only those that we | |
8640 | might refer to by offset later during partial symbol reading. | |
8641 | ||
8642 | For now this means things that might have be the target of a | |
8643 | DW_AT_specification, DW_AT_abstract_origin, or | |
8644 | DW_AT_extension. DW_AT_extension will refer only to | |
8645 | namespaces; DW_AT_abstract_origin refers to functions (and | |
8646 | many things under the function DIE, but we do not recurse | |
8647 | into function DIEs during partial symbol reading) and | |
8648 | possibly variables as well; DW_AT_specification refers to | |
8649 | declarations. Declarations ought to have the DW_AT_declaration | |
8650 | flag. It happens that GCC forgets to put it in sometimes, but | |
8651 | only for functions, not for types. | |
8652 | ||
8653 | Adding more things than necessary to the hash table is harmless | |
8654 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
8655 | wasted time in find_partial_die, when we reread the compilation |
8656 | unit with load_all_dies set. */ | |
72bf9492 | 8657 | |
5afb4e99 | 8658 | if (load_all |
72929c62 | 8659 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 8660 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
8661 | || abbrev->tag == DW_TAG_variable |
8662 | || abbrev->tag == DW_TAG_namespace | |
8663 | || part_die->is_declaration) | |
8664 | { | |
8665 | void **slot; | |
8666 | ||
8667 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
8668 | part_die->offset, INSERT); | |
8669 | *slot = part_die; | |
8670 | } | |
8671 | ||
8672 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
8673 | sizeof (struct partial_die_info)); | |
8674 | ||
8675 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 8676 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
8677 | languages we have to, so that we can get at method physnames |
8678 | to infer fully qualified class names, for DW_AT_specification, | |
8679 | and for C++ template arguments. For C++, we also look one level | |
8680 | inside functions to find template arguments (if the name of the | |
8681 | function does not already contain the template arguments). | |
bc30ff58 JB |
8682 | |
8683 | For Ada, we need to scan the children of subprograms and lexical | |
8684 | blocks as well because Ada allows the definition of nested | |
8685 | entities that could be interesting for the debugger, such as | |
8686 | nested subprograms for instance. */ | |
72bf9492 | 8687 | if (last_die->has_children |
5afb4e99 DJ |
8688 | && (load_all |
8689 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 8690 | || last_die->tag == DW_TAG_module |
72bf9492 | 8691 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
8692 | || (cu->language == language_cplus |
8693 | && last_die->tag == DW_TAG_subprogram | |
8694 | && (last_die->name == NULL | |
8695 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
8696 | || (cu->language != language_c |
8697 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 8698 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 8699 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
8700 | || last_die->tag == DW_TAG_union_type)) |
8701 | || (cu->language == language_ada | |
8702 | && (last_die->tag == DW_TAG_subprogram | |
8703 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
8704 | { |
8705 | nesting_level++; | |
8706 | parent_die = last_die; | |
8707 | continue; | |
8708 | } | |
8709 | ||
8710 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 8711 | info_ptr = locate_pdi_sibling (last_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
8712 | |
8713 | /* Back to the top, do it again. */ | |
8714 | } | |
8715 | } | |
8716 | ||
c906108c SS |
8717 | /* Read a minimal amount of information into the minimal die structure. */ |
8718 | ||
fe1b8b76 | 8719 | static gdb_byte * |
72bf9492 DJ |
8720 | read_partial_die (struct partial_die_info *part_die, |
8721 | struct abbrev_info *abbrev, | |
8722 | unsigned int abbrev_len, bfd *abfd, | |
93311388 DE |
8723 | gdb_byte *buffer, gdb_byte *info_ptr, |
8724 | struct dwarf2_cu *cu) | |
c906108c | 8725 | { |
fa238c03 | 8726 | unsigned int i; |
c906108c | 8727 | struct attribute attr; |
c5aa993b | 8728 | int has_low_pc_attr = 0; |
c906108c SS |
8729 | int has_high_pc_attr = 0; |
8730 | ||
72bf9492 | 8731 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 8732 | |
93311388 | 8733 | part_die->offset = info_ptr - buffer; |
72bf9492 DJ |
8734 | |
8735 | info_ptr += abbrev_len; | |
8736 | ||
8737 | if (abbrev == NULL) | |
8738 | return info_ptr; | |
8739 | ||
c906108c SS |
8740 | part_die->tag = abbrev->tag; |
8741 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
8742 | |
8743 | for (i = 0; i < abbrev->num_attrs; ++i) | |
8744 | { | |
e7c27a73 | 8745 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
8746 | |
8747 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 8748 | partial symbol table. */ |
c906108c SS |
8749 | switch (attr.name) |
8750 | { | |
8751 | case DW_AT_name: | |
71c25dea TT |
8752 | switch (part_die->tag) |
8753 | { | |
8754 | case DW_TAG_compile_unit: | |
348e048f | 8755 | case DW_TAG_type_unit: |
71c25dea TT |
8756 | /* Compilation units have a DW_AT_name that is a filename, not |
8757 | a source language identifier. */ | |
8758 | case DW_TAG_enumeration_type: | |
8759 | case DW_TAG_enumerator: | |
8760 | /* These tags always have simple identifiers already; no need | |
8761 | to canonicalize them. */ | |
8762 | part_die->name = DW_STRING (&attr); | |
8763 | break; | |
8764 | default: | |
8765 | part_die->name | |
8766 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
95519e0e | 8767 | &cu->objfile->objfile_obstack); |
71c25dea TT |
8768 | break; |
8769 | } | |
c906108c | 8770 | break; |
31ef98ae | 8771 | case DW_AT_linkage_name: |
c906108c | 8772 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
8773 | /* Note that both forms of linkage name might appear. We |
8774 | assume they will be the same, and we only store the last | |
8775 | one we see. */ | |
94af9270 KS |
8776 | if (cu->language == language_ada) |
8777 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 8778 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
8779 | break; |
8780 | case DW_AT_low_pc: | |
8781 | has_low_pc_attr = 1; | |
8782 | part_die->lowpc = DW_ADDR (&attr); | |
8783 | break; | |
8784 | case DW_AT_high_pc: | |
8785 | has_high_pc_attr = 1; | |
8786 | part_die->highpc = DW_ADDR (&attr); | |
8787 | break; | |
8788 | case DW_AT_location: | |
8e19ed76 PS |
8789 | /* Support the .debug_loc offsets */ |
8790 | if (attr_form_is_block (&attr)) | |
8791 | { | |
8792 | part_die->locdesc = DW_BLOCK (&attr); | |
8793 | } | |
3690dd37 | 8794 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 8795 | { |
4d3c2250 | 8796 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
8797 | } |
8798 | else | |
8799 | { | |
4d3c2250 KB |
8800 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
8801 | "partial symbol information"); | |
8e19ed76 | 8802 | } |
c906108c | 8803 | break; |
c906108c SS |
8804 | case DW_AT_external: |
8805 | part_die->is_external = DW_UNSND (&attr); | |
8806 | break; | |
8807 | case DW_AT_declaration: | |
8808 | part_die->is_declaration = DW_UNSND (&attr); | |
8809 | break; | |
8810 | case DW_AT_type: | |
8811 | part_die->has_type = 1; | |
8812 | break; | |
8813 | case DW_AT_abstract_origin: | |
8814 | case DW_AT_specification: | |
72bf9492 DJ |
8815 | case DW_AT_extension: |
8816 | part_die->has_specification = 1; | |
c764a876 | 8817 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
c906108c SS |
8818 | break; |
8819 | case DW_AT_sibling: | |
8820 | /* Ignore absolute siblings, they might point outside of | |
8821 | the current compile unit. */ | |
8822 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 8823 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
c906108c | 8824 | else |
93311388 | 8825 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr); |
c906108c | 8826 | break; |
fa4028e9 JB |
8827 | case DW_AT_byte_size: |
8828 | part_die->has_byte_size = 1; | |
8829 | break; | |
68511cec CES |
8830 | case DW_AT_calling_convention: |
8831 | /* DWARF doesn't provide a way to identify a program's source-level | |
8832 | entry point. DW_AT_calling_convention attributes are only meant | |
8833 | to describe functions' calling conventions. | |
8834 | ||
8835 | However, because it's a necessary piece of information in | |
8836 | Fortran, and because DW_CC_program is the only piece of debugging | |
8837 | information whose definition refers to a 'main program' at all, | |
8838 | several compilers have begun marking Fortran main programs with | |
8839 | DW_CC_program --- even when those functions use the standard | |
8840 | calling conventions. | |
8841 | ||
8842 | So until DWARF specifies a way to provide this information and | |
8843 | compilers pick up the new representation, we'll support this | |
8844 | practice. */ | |
8845 | if (DW_UNSND (&attr) == DW_CC_program | |
8846 | && cu->language == language_fortran) | |
8847 | set_main_name (part_die->name); | |
8848 | break; | |
c906108c SS |
8849 | default: |
8850 | break; | |
8851 | } | |
8852 | } | |
8853 | ||
c906108c SS |
8854 | /* When using the GNU linker, .gnu.linkonce. sections are used to |
8855 | eliminate duplicate copies of functions and vtables and such. | |
8856 | The linker will arbitrarily choose one and discard the others. | |
8857 | The AT_*_pc values for such functions refer to local labels in | |
8858 | these sections. If the section from that file was discarded, the | |
8859 | labels are not in the output, so the relocs get a value of 0. | |
8860 | If this is a discarded function, mark the pc bounds as invalid, | |
8861 | so that GDB will ignore it. */ | |
8862 | if (has_low_pc_attr && has_high_pc_attr | |
8863 | && part_die->lowpc < part_die->highpc | |
8864 | && (part_die->lowpc != 0 | |
72dca2f5 | 8865 | || dwarf2_per_objfile->has_section_at_zero)) |
0b010bcc | 8866 | part_die->has_pc_info = 1; |
85cbf3d3 | 8867 | |
c906108c SS |
8868 | return info_ptr; |
8869 | } | |
8870 | ||
72bf9492 DJ |
8871 | /* Find a cached partial DIE at OFFSET in CU. */ |
8872 | ||
8873 | static struct partial_die_info * | |
c764a876 | 8874 | find_partial_die_in_comp_unit (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
8875 | { |
8876 | struct partial_die_info *lookup_die = NULL; | |
8877 | struct partial_die_info part_die; | |
8878 | ||
8879 | part_die.offset = offset; | |
8880 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
8881 | ||
72bf9492 DJ |
8882 | return lookup_die; |
8883 | } | |
8884 | ||
348e048f DE |
8885 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
8886 | except in the case of .debug_types DIEs which do not reference | |
8887 | outside their CU (they do however referencing other types via | |
8888 | DW_FORM_sig8). */ | |
72bf9492 DJ |
8889 | |
8890 | static struct partial_die_info * | |
c764a876 | 8891 | find_partial_die (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 | 8892 | { |
5afb4e99 DJ |
8893 | struct dwarf2_per_cu_data *per_cu = NULL; |
8894 | struct partial_die_info *pd = NULL; | |
72bf9492 | 8895 | |
348e048f DE |
8896 | if (cu->per_cu->from_debug_types) |
8897 | { | |
8898 | pd = find_partial_die_in_comp_unit (offset, cu); | |
8899 | if (pd != NULL) | |
8900 | return pd; | |
8901 | goto not_found; | |
8902 | } | |
8903 | ||
45452591 | 8904 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
8905 | { |
8906 | pd = find_partial_die_in_comp_unit (offset, cu); | |
8907 | if (pd != NULL) | |
8908 | return pd; | |
8909 | } | |
72bf9492 | 8910 | |
ae038cb0 DJ |
8911 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
8912 | ||
98bfdba5 PA |
8913 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
8914 | load_partial_comp_unit (per_cu, cu->objfile); | |
ae038cb0 DJ |
8915 | |
8916 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
8917 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
8918 | ||
8919 | if (pd == NULL && per_cu->load_all_dies == 0) | |
8920 | { | |
8921 | struct cleanup *back_to; | |
8922 | struct partial_die_info comp_unit_die; | |
8923 | struct abbrev_info *abbrev; | |
8924 | unsigned int bytes_read; | |
8925 | char *info_ptr; | |
8926 | ||
8927 | per_cu->load_all_dies = 1; | |
8928 | ||
8929 | /* Re-read the DIEs. */ | |
8930 | back_to = make_cleanup (null_cleanup, 0); | |
8931 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
8932 | { | |
8933 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
53d72f98 | 8934 | make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); |
5afb4e99 | 8935 | } |
dce234bc | 8936 | info_ptr = (dwarf2_per_objfile->info.buffer |
d00adf39 DE |
8937 | + per_cu->cu->header.offset |
8938 | + per_cu->cu->header.first_die_offset); | |
5afb4e99 DJ |
8939 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); |
8940 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
93311388 DE |
8941 | per_cu->cu->objfile->obfd, |
8942 | dwarf2_per_objfile->info.buffer, info_ptr, | |
5afb4e99 DJ |
8943 | per_cu->cu); |
8944 | if (comp_unit_die.has_children) | |
93311388 DE |
8945 | load_partial_dies (per_cu->cu->objfile->obfd, |
8946 | dwarf2_per_objfile->info.buffer, info_ptr, | |
8947 | 0, per_cu->cu); | |
5afb4e99 DJ |
8948 | do_cleanups (back_to); |
8949 | ||
8950 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
8951 | } | |
8952 | ||
348e048f DE |
8953 | not_found: |
8954 | ||
5afb4e99 DJ |
8955 | if (pd == NULL) |
8956 | internal_error (__FILE__, __LINE__, | |
c764a876 | 8957 | _("could not find partial DIE 0x%x in cache [from module %s]\n"), |
5afb4e99 DJ |
8958 | offset, bfd_get_filename (cu->objfile->obfd)); |
8959 | return pd; | |
72bf9492 DJ |
8960 | } |
8961 | ||
abc72ce4 DE |
8962 | /* See if we can figure out if the class lives in a namespace. We do |
8963 | this by looking for a member function; its demangled name will | |
8964 | contain namespace info, if there is any. */ | |
8965 | ||
8966 | static void | |
8967 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
8968 | struct dwarf2_cu *cu) | |
8969 | { | |
8970 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
8971 | what template types look like, because the demangler | |
8972 | frequently doesn't give the same name as the debug info. We | |
8973 | could fix this by only using the demangled name to get the | |
8974 | prefix (but see comment in read_structure_type). */ | |
8975 | ||
8976 | struct partial_die_info *real_pdi; | |
8977 | struct partial_die_info *child_pdi; | |
8978 | ||
8979 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
8980 | we should not do this. We'll prepend the parent's fully qualified | |
8981 | name when we create the partial symbol. */ | |
8982 | ||
8983 | real_pdi = struct_pdi; | |
8984 | while (real_pdi->has_specification) | |
8985 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); | |
8986 | ||
8987 | if (real_pdi->die_parent != NULL) | |
8988 | return; | |
8989 | ||
8990 | for (child_pdi = struct_pdi->die_child; | |
8991 | child_pdi != NULL; | |
8992 | child_pdi = child_pdi->die_sibling) | |
8993 | { | |
8994 | if (child_pdi->tag == DW_TAG_subprogram | |
8995 | && child_pdi->linkage_name != NULL) | |
8996 | { | |
8997 | char *actual_class_name | |
8998 | = language_class_name_from_physname (cu->language_defn, | |
8999 | child_pdi->linkage_name); | |
9000 | if (actual_class_name != NULL) | |
9001 | { | |
9002 | struct_pdi->name | |
9003 | = obsavestring (actual_class_name, | |
9004 | strlen (actual_class_name), | |
9005 | &cu->objfile->objfile_obstack); | |
9006 | xfree (actual_class_name); | |
9007 | } | |
9008 | break; | |
9009 | } | |
9010 | } | |
9011 | } | |
9012 | ||
72bf9492 DJ |
9013 | /* Adjust PART_DIE before generating a symbol for it. This function |
9014 | may set the is_external flag or change the DIE's name. */ | |
9015 | ||
9016 | static void | |
9017 | fixup_partial_die (struct partial_die_info *part_die, | |
9018 | struct dwarf2_cu *cu) | |
9019 | { | |
abc72ce4 DE |
9020 | /* Once we've fixed up a die, there's no point in doing so again. |
9021 | This also avoids a memory leak if we were to call | |
9022 | guess_partial_die_structure_name multiple times. */ | |
9023 | if (part_die->fixup_called) | |
9024 | return; | |
9025 | ||
72bf9492 DJ |
9026 | /* If we found a reference attribute and the DIE has no name, try |
9027 | to find a name in the referred to DIE. */ | |
9028 | ||
9029 | if (part_die->name == NULL && part_die->has_specification) | |
9030 | { | |
9031 | struct partial_die_info *spec_die; | |
72bf9492 | 9032 | |
10b3939b | 9033 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 9034 | |
10b3939b | 9035 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
9036 | |
9037 | if (spec_die->name) | |
9038 | { | |
9039 | part_die->name = spec_die->name; | |
9040 | ||
9041 | /* Copy DW_AT_external attribute if it is set. */ | |
9042 | if (spec_die->is_external) | |
9043 | part_die->is_external = spec_die->is_external; | |
9044 | } | |
9045 | } | |
9046 | ||
9047 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
9048 | |
9049 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
9050 | part_die->name = "(anonymous namespace)"; | |
9051 | ||
abc72ce4 DE |
9052 | /* If there is no parent die to provide a namespace, and there are |
9053 | children, see if we can determine the namespace from their linkage | |
9054 | name. | |
9055 | NOTE: We need to do this even if cu->has_namespace_info != 0. | |
9056 | gcc-4.5 -gdwarf-4 can drop the enclosing namespace. */ | |
9057 | if (cu->language == language_cplus | |
9058 | && dwarf2_per_objfile->types.asection != NULL | |
9059 | && part_die->die_parent == NULL | |
9060 | && part_die->has_children | |
9061 | && (part_die->tag == DW_TAG_class_type | |
9062 | || part_die->tag == DW_TAG_structure_type | |
9063 | || part_die->tag == DW_TAG_union_type)) | |
9064 | guess_partial_die_structure_name (part_die, cu); | |
9065 | ||
9066 | part_die->fixup_called = 1; | |
72bf9492 DJ |
9067 | } |
9068 | ||
a8329558 | 9069 | /* Read an attribute value described by an attribute form. */ |
c906108c | 9070 | |
fe1b8b76 | 9071 | static gdb_byte * |
a8329558 | 9072 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 9073 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 9074 | struct dwarf2_cu *cu) |
c906108c | 9075 | { |
e7c27a73 | 9076 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
9077 | unsigned int bytes_read; |
9078 | struct dwarf_block *blk; | |
9079 | ||
a8329558 KW |
9080 | attr->form = form; |
9081 | switch (form) | |
c906108c | 9082 | { |
c906108c | 9083 | case DW_FORM_ref_addr: |
ae411497 TT |
9084 | if (cu->header.version == 2) |
9085 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); | |
9086 | else | |
9087 | DW_ADDR (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
9088 | info_ptr += bytes_read; | |
9089 | break; | |
9090 | case DW_FORM_addr: | |
e7c27a73 | 9091 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 9092 | info_ptr += bytes_read; |
c906108c SS |
9093 | break; |
9094 | case DW_FORM_block2: | |
7b5a2f43 | 9095 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9096 | blk->size = read_2_bytes (abfd, info_ptr); |
9097 | info_ptr += 2; | |
9098 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9099 | info_ptr += blk->size; | |
9100 | DW_BLOCK (attr) = blk; | |
9101 | break; | |
9102 | case DW_FORM_block4: | |
7b5a2f43 | 9103 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9104 | blk->size = read_4_bytes (abfd, info_ptr); |
9105 | info_ptr += 4; | |
9106 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9107 | info_ptr += blk->size; | |
9108 | DW_BLOCK (attr) = blk; | |
9109 | break; | |
9110 | case DW_FORM_data2: | |
9111 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
9112 | info_ptr += 2; | |
9113 | break; | |
9114 | case DW_FORM_data4: | |
9115 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
9116 | info_ptr += 4; | |
9117 | break; | |
9118 | case DW_FORM_data8: | |
9119 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
9120 | info_ptr += 8; | |
9121 | break; | |
2dc7f7b3 TT |
9122 | case DW_FORM_sec_offset: |
9123 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
9124 | info_ptr += bytes_read; | |
9125 | break; | |
c906108c | 9126 | case DW_FORM_string: |
9b1c24c8 | 9127 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 9128 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
9129 | info_ptr += bytes_read; |
9130 | break; | |
4bdf3d34 JJ |
9131 | case DW_FORM_strp: |
9132 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
9133 | &bytes_read); | |
8285870a | 9134 | DW_STRING_IS_CANONICAL (attr) = 0; |
4bdf3d34 JJ |
9135 | info_ptr += bytes_read; |
9136 | break; | |
2dc7f7b3 | 9137 | case DW_FORM_exprloc: |
c906108c | 9138 | case DW_FORM_block: |
7b5a2f43 | 9139 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9140 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
9141 | info_ptr += bytes_read; | |
9142 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9143 | info_ptr += blk->size; | |
9144 | DW_BLOCK (attr) = blk; | |
9145 | break; | |
9146 | case DW_FORM_block1: | |
7b5a2f43 | 9147 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9148 | blk->size = read_1_byte (abfd, info_ptr); |
9149 | info_ptr += 1; | |
9150 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9151 | info_ptr += blk->size; | |
9152 | DW_BLOCK (attr) = blk; | |
9153 | break; | |
9154 | case DW_FORM_data1: | |
9155 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
9156 | info_ptr += 1; | |
9157 | break; | |
9158 | case DW_FORM_flag: | |
9159 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
9160 | info_ptr += 1; | |
9161 | break; | |
2dc7f7b3 TT |
9162 | case DW_FORM_flag_present: |
9163 | DW_UNSND (attr) = 1; | |
9164 | break; | |
c906108c SS |
9165 | case DW_FORM_sdata: |
9166 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
9167 | info_ptr += bytes_read; | |
9168 | break; | |
9169 | case DW_FORM_udata: | |
9170 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9171 | info_ptr += bytes_read; | |
9172 | break; | |
9173 | case DW_FORM_ref1: | |
10b3939b | 9174 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
9175 | info_ptr += 1; |
9176 | break; | |
9177 | case DW_FORM_ref2: | |
10b3939b | 9178 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
9179 | info_ptr += 2; |
9180 | break; | |
9181 | case DW_FORM_ref4: | |
10b3939b | 9182 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
9183 | info_ptr += 4; |
9184 | break; | |
613e1657 | 9185 | case DW_FORM_ref8: |
10b3939b | 9186 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
9187 | info_ptr += 8; |
9188 | break; | |
348e048f DE |
9189 | case DW_FORM_sig8: |
9190 | /* Convert the signature to something we can record in DW_UNSND | |
9191 | for later lookup. | |
9192 | NOTE: This is NULL if the type wasn't found. */ | |
9193 | DW_SIGNATURED_TYPE (attr) = | |
9194 | lookup_signatured_type (cu->objfile, read_8_bytes (abfd, info_ptr)); | |
9195 | info_ptr += 8; | |
9196 | break; | |
c906108c | 9197 | case DW_FORM_ref_udata: |
10b3939b DJ |
9198 | DW_ADDR (attr) = (cu->header.offset |
9199 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
9200 | info_ptr += bytes_read; |
9201 | break; | |
c906108c | 9202 | case DW_FORM_indirect: |
a8329558 KW |
9203 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
9204 | info_ptr += bytes_read; | |
e7c27a73 | 9205 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 9206 | break; |
c906108c | 9207 | default: |
8a3fe4f8 | 9208 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
9209 | dwarf_form_name (form), |
9210 | bfd_get_filename (abfd)); | |
c906108c | 9211 | } |
28e94949 JB |
9212 | |
9213 | /* We have seen instances where the compiler tried to emit a byte | |
9214 | size attribute of -1 which ended up being encoded as an unsigned | |
9215 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
9216 | an object of this size seems pretty unlikely so we can relatively | |
9217 | safely treat these cases as if the size attribute was invalid and | |
9218 | treat them as zero by default. */ | |
9219 | if (attr->name == DW_AT_byte_size | |
9220 | && form == DW_FORM_data4 | |
9221 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
9222 | { |
9223 | complaint | |
9224 | (&symfile_complaints, | |
43bbcdc2 PH |
9225 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
9226 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
9227 | DW_UNSND (attr) = 0; |
9228 | } | |
28e94949 | 9229 | |
c906108c SS |
9230 | return info_ptr; |
9231 | } | |
9232 | ||
a8329558 KW |
9233 | /* Read an attribute described by an abbreviated attribute. */ |
9234 | ||
fe1b8b76 | 9235 | static gdb_byte * |
a8329558 | 9236 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 9237 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
9238 | { |
9239 | attr->name = abbrev->name; | |
e7c27a73 | 9240 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
9241 | } |
9242 | ||
c906108c SS |
9243 | /* read dwarf information from a buffer */ |
9244 | ||
9245 | static unsigned int | |
fe1b8b76 | 9246 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 9247 | { |
fe1b8b76 | 9248 | return bfd_get_8 (abfd, buf); |
c906108c SS |
9249 | } |
9250 | ||
9251 | static int | |
fe1b8b76 | 9252 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 9253 | { |
fe1b8b76 | 9254 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
9255 | } |
9256 | ||
9257 | static unsigned int | |
fe1b8b76 | 9258 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9259 | { |
fe1b8b76 | 9260 | return bfd_get_16 (abfd, buf); |
c906108c SS |
9261 | } |
9262 | ||
9263 | static int | |
fe1b8b76 | 9264 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9265 | { |
fe1b8b76 | 9266 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
9267 | } |
9268 | ||
9269 | static unsigned int | |
fe1b8b76 | 9270 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9271 | { |
fe1b8b76 | 9272 | return bfd_get_32 (abfd, buf); |
c906108c SS |
9273 | } |
9274 | ||
9275 | static int | |
fe1b8b76 | 9276 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9277 | { |
fe1b8b76 | 9278 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
9279 | } |
9280 | ||
93311388 | 9281 | static ULONGEST |
fe1b8b76 | 9282 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9283 | { |
fe1b8b76 | 9284 | return bfd_get_64 (abfd, buf); |
c906108c SS |
9285 | } |
9286 | ||
9287 | static CORE_ADDR | |
fe1b8b76 | 9288 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 9289 | unsigned int *bytes_read) |
c906108c | 9290 | { |
e7c27a73 | 9291 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
9292 | CORE_ADDR retval = 0; |
9293 | ||
107d2387 | 9294 | if (cu_header->signed_addr_p) |
c906108c | 9295 | { |
107d2387 AC |
9296 | switch (cu_header->addr_size) |
9297 | { | |
9298 | case 2: | |
fe1b8b76 | 9299 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
9300 | break; |
9301 | case 4: | |
fe1b8b76 | 9302 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
9303 | break; |
9304 | case 8: | |
fe1b8b76 | 9305 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
9306 | break; |
9307 | default: | |
8e65ff28 | 9308 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9309 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 9310 | bfd_get_filename (abfd)); |
107d2387 AC |
9311 | } |
9312 | } | |
9313 | else | |
9314 | { | |
9315 | switch (cu_header->addr_size) | |
9316 | { | |
9317 | case 2: | |
fe1b8b76 | 9318 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
9319 | break; |
9320 | case 4: | |
fe1b8b76 | 9321 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
9322 | break; |
9323 | case 8: | |
fe1b8b76 | 9324 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
9325 | break; |
9326 | default: | |
8e65ff28 | 9327 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9328 | _("read_address: bad switch, unsigned [in module %s]"), |
659b0389 | 9329 | bfd_get_filename (abfd)); |
107d2387 | 9330 | } |
c906108c | 9331 | } |
64367e0a | 9332 | |
107d2387 AC |
9333 | *bytes_read = cu_header->addr_size; |
9334 | return retval; | |
c906108c SS |
9335 | } |
9336 | ||
f7ef9339 | 9337 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
9338 | specification allows the initial length to take up either 4 bytes |
9339 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
9340 | bytes describe the length and all offsets will be 8 bytes in length | |
9341 | instead of 4. | |
9342 | ||
f7ef9339 KB |
9343 | An older, non-standard 64-bit format is also handled by this |
9344 | function. The older format in question stores the initial length | |
9345 | as an 8-byte quantity without an escape value. Lengths greater | |
9346 | than 2^32 aren't very common which means that the initial 4 bytes | |
9347 | is almost always zero. Since a length value of zero doesn't make | |
9348 | sense for the 32-bit format, this initial zero can be considered to | |
9349 | be an escape value which indicates the presence of the older 64-bit | |
9350 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
9351 | greater than 4GB. If it becomes necessary to handle lengths |
9352 | somewhat larger than 4GB, we could allow other small values (such | |
9353 | as the non-sensical values of 1, 2, and 3) to also be used as | |
9354 | escape values indicating the presence of the old format. | |
f7ef9339 | 9355 | |
917c78fc MK |
9356 | The value returned via bytes_read should be used to increment the |
9357 | relevant pointer after calling read_initial_length(). | |
c764a876 | 9358 | |
613e1657 KB |
9359 | [ Note: read_initial_length() and read_offset() are based on the |
9360 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 9361 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
9362 | from: |
9363 | ||
f7ef9339 | 9364 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 9365 | |
613e1657 KB |
9366 | This document is only a draft and is subject to change. (So beware.) |
9367 | ||
f7ef9339 | 9368 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
9369 | determined empirically by examining 64-bit ELF files produced by |
9370 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
9371 | |
9372 | - Kevin, July 16, 2002 | |
613e1657 KB |
9373 | ] */ |
9374 | ||
9375 | static LONGEST | |
c764a876 | 9376 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 9377 | { |
fe1b8b76 | 9378 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 9379 | |
dd373385 | 9380 | if (length == 0xffffffff) |
613e1657 | 9381 | { |
fe1b8b76 | 9382 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 9383 | *bytes_read = 12; |
613e1657 | 9384 | } |
dd373385 | 9385 | else if (length == 0) |
f7ef9339 | 9386 | { |
dd373385 | 9387 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 9388 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 9389 | *bytes_read = 8; |
f7ef9339 | 9390 | } |
613e1657 KB |
9391 | else |
9392 | { | |
9393 | *bytes_read = 4; | |
613e1657 KB |
9394 | } |
9395 | ||
c764a876 DE |
9396 | return length; |
9397 | } | |
dd373385 | 9398 | |
c764a876 DE |
9399 | /* Cover function for read_initial_length. |
9400 | Returns the length of the object at BUF, and stores the size of the | |
9401 | initial length in *BYTES_READ and stores the size that offsets will be in | |
9402 | *OFFSET_SIZE. | |
9403 | If the initial length size is not equivalent to that specified in | |
9404 | CU_HEADER then issue a complaint. | |
9405 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 9406 | |
c764a876 DE |
9407 | static LONGEST |
9408 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
9409 | const struct comp_unit_head *cu_header, | |
9410 | unsigned int *bytes_read, | |
9411 | unsigned int *offset_size) | |
9412 | { | |
9413 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
9414 | ||
9415 | gdb_assert (cu_header->initial_length_size == 4 | |
9416 | || cu_header->initial_length_size == 8 | |
9417 | || cu_header->initial_length_size == 12); | |
9418 | ||
9419 | if (cu_header->initial_length_size != *bytes_read) | |
9420 | complaint (&symfile_complaints, | |
9421 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 9422 | |
c764a876 | 9423 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 9424 | return length; |
613e1657 KB |
9425 | } |
9426 | ||
9427 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 9428 | given by cu_header->offset_size. */ |
613e1657 KB |
9429 | |
9430 | static LONGEST | |
fe1b8b76 | 9431 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 9432 | unsigned int *bytes_read) |
c764a876 DE |
9433 | { |
9434 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 9435 | |
c764a876 DE |
9436 | *bytes_read = cu_header->offset_size; |
9437 | return offset; | |
9438 | } | |
9439 | ||
9440 | /* Read an offset from the data stream. */ | |
9441 | ||
9442 | static LONGEST | |
9443 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
9444 | { |
9445 | LONGEST retval = 0; | |
9446 | ||
c764a876 | 9447 | switch (offset_size) |
613e1657 KB |
9448 | { |
9449 | case 4: | |
fe1b8b76 | 9450 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
9451 | break; |
9452 | case 8: | |
fe1b8b76 | 9453 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
9454 | break; |
9455 | default: | |
8e65ff28 | 9456 | internal_error (__FILE__, __LINE__, |
c764a876 | 9457 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 9458 | bfd_get_filename (abfd)); |
613e1657 KB |
9459 | } |
9460 | ||
917c78fc | 9461 | return retval; |
613e1657 KB |
9462 | } |
9463 | ||
fe1b8b76 JB |
9464 | static gdb_byte * |
9465 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
9466 | { |
9467 | /* If the size of a host char is 8 bits, we can return a pointer | |
9468 | to the buffer, otherwise we have to copy the data to a buffer | |
9469 | allocated on the temporary obstack. */ | |
4bdf3d34 | 9470 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 9471 | return buf; |
c906108c SS |
9472 | } |
9473 | ||
9474 | static char * | |
9b1c24c8 | 9475 | read_direct_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
9476 | { |
9477 | /* If the size of a host char is 8 bits, we can return a pointer | |
9478 | to the string, otherwise we have to copy the string to a buffer | |
9479 | allocated on the temporary obstack. */ | |
4bdf3d34 | 9480 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
9481 | if (*buf == '\0') |
9482 | { | |
9483 | *bytes_read_ptr = 1; | |
9484 | return NULL; | |
9485 | } | |
fe1b8b76 JB |
9486 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
9487 | return (char *) buf; | |
4bdf3d34 JJ |
9488 | } |
9489 | ||
9490 | static char * | |
fe1b8b76 | 9491 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
9492 | const struct comp_unit_head *cu_header, |
9493 | unsigned int *bytes_read_ptr) | |
9494 | { | |
c764a876 | 9495 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); |
c906108c | 9496 | |
be391dca | 9497 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 9498 | if (dwarf2_per_objfile->str.buffer == NULL) |
c906108c | 9499 | { |
8a3fe4f8 | 9500 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 9501 | bfd_get_filename (abfd)); |
4bdf3d34 | 9502 | return NULL; |
c906108c | 9503 | } |
dce234bc | 9504 | if (str_offset >= dwarf2_per_objfile->str.size) |
c906108c | 9505 | { |
8a3fe4f8 | 9506 | error (_("DW_FORM_strp pointing outside of .debug_str section [in module %s]"), |
659b0389 | 9507 | bfd_get_filename (abfd)); |
c906108c SS |
9508 | return NULL; |
9509 | } | |
4bdf3d34 | 9510 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 9511 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 9512 | return NULL; |
dce234bc | 9513 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
9514 | } |
9515 | ||
ce5d95e1 | 9516 | static unsigned long |
fe1b8b76 | 9517 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 9518 | { |
ce5d95e1 JB |
9519 | unsigned long result; |
9520 | unsigned int num_read; | |
c906108c SS |
9521 | int i, shift; |
9522 | unsigned char byte; | |
9523 | ||
9524 | result = 0; | |
9525 | shift = 0; | |
9526 | num_read = 0; | |
9527 | i = 0; | |
9528 | while (1) | |
9529 | { | |
fe1b8b76 | 9530 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
9531 | buf++; |
9532 | num_read++; | |
ce5d95e1 | 9533 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
9534 | if ((byte & 128) == 0) |
9535 | { | |
9536 | break; | |
9537 | } | |
9538 | shift += 7; | |
9539 | } | |
9540 | *bytes_read_ptr = num_read; | |
9541 | return result; | |
9542 | } | |
9543 | ||
ce5d95e1 | 9544 | static long |
fe1b8b76 | 9545 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 9546 | { |
ce5d95e1 | 9547 | long result; |
77e0b926 | 9548 | int i, shift, num_read; |
c906108c SS |
9549 | unsigned char byte; |
9550 | ||
9551 | result = 0; | |
9552 | shift = 0; | |
c906108c SS |
9553 | num_read = 0; |
9554 | i = 0; | |
9555 | while (1) | |
9556 | { | |
fe1b8b76 | 9557 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
9558 | buf++; |
9559 | num_read++; | |
ce5d95e1 | 9560 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
9561 | shift += 7; |
9562 | if ((byte & 128) == 0) | |
9563 | { | |
9564 | break; | |
9565 | } | |
9566 | } | |
77e0b926 DJ |
9567 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
9568 | result |= -(((long)1) << shift); | |
c906108c SS |
9569 | *bytes_read_ptr = num_read; |
9570 | return result; | |
9571 | } | |
9572 | ||
4bb7a0a7 DJ |
9573 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
9574 | ||
fe1b8b76 JB |
9575 | static gdb_byte * |
9576 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
9577 | { |
9578 | int byte; | |
9579 | ||
9580 | while (1) | |
9581 | { | |
fe1b8b76 | 9582 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
9583 | buf++; |
9584 | if ((byte & 128) == 0) | |
9585 | return buf; | |
9586 | } | |
9587 | } | |
9588 | ||
c906108c | 9589 | static void |
e142c38c | 9590 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
9591 | { |
9592 | switch (lang) | |
9593 | { | |
9594 | case DW_LANG_C89: | |
76bee0cc | 9595 | case DW_LANG_C99: |
c906108c | 9596 | case DW_LANG_C: |
e142c38c | 9597 | cu->language = language_c; |
c906108c SS |
9598 | break; |
9599 | case DW_LANG_C_plus_plus: | |
e142c38c | 9600 | cu->language = language_cplus; |
c906108c | 9601 | break; |
6aecb9c2 JB |
9602 | case DW_LANG_D: |
9603 | cu->language = language_d; | |
9604 | break; | |
c906108c SS |
9605 | case DW_LANG_Fortran77: |
9606 | case DW_LANG_Fortran90: | |
b21b22e0 | 9607 | case DW_LANG_Fortran95: |
e142c38c | 9608 | cu->language = language_fortran; |
c906108c SS |
9609 | break; |
9610 | case DW_LANG_Mips_Assembler: | |
e142c38c | 9611 | cu->language = language_asm; |
c906108c | 9612 | break; |
bebd888e | 9613 | case DW_LANG_Java: |
e142c38c | 9614 | cu->language = language_java; |
bebd888e | 9615 | break; |
c906108c | 9616 | case DW_LANG_Ada83: |
8aaf0b47 | 9617 | case DW_LANG_Ada95: |
bc5f45f8 JB |
9618 | cu->language = language_ada; |
9619 | break; | |
72019c9c GM |
9620 | case DW_LANG_Modula2: |
9621 | cu->language = language_m2; | |
9622 | break; | |
fe8e67fd PM |
9623 | case DW_LANG_Pascal83: |
9624 | cu->language = language_pascal; | |
9625 | break; | |
22566fbd DJ |
9626 | case DW_LANG_ObjC: |
9627 | cu->language = language_objc; | |
9628 | break; | |
c906108c SS |
9629 | case DW_LANG_Cobol74: |
9630 | case DW_LANG_Cobol85: | |
c906108c | 9631 | default: |
e142c38c | 9632 | cu->language = language_minimal; |
c906108c SS |
9633 | break; |
9634 | } | |
e142c38c | 9635 | cu->language_defn = language_def (cu->language); |
c906108c SS |
9636 | } |
9637 | ||
9638 | /* Return the named attribute or NULL if not there. */ | |
9639 | ||
9640 | static struct attribute * | |
e142c38c | 9641 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
9642 | { |
9643 | unsigned int i; | |
9644 | struct attribute *spec = NULL; | |
9645 | ||
9646 | for (i = 0; i < die->num_attrs; ++i) | |
9647 | { | |
9648 | if (die->attrs[i].name == name) | |
10b3939b | 9649 | return &die->attrs[i]; |
c906108c SS |
9650 | if (die->attrs[i].name == DW_AT_specification |
9651 | || die->attrs[i].name == DW_AT_abstract_origin) | |
9652 | spec = &die->attrs[i]; | |
9653 | } | |
c906108c | 9654 | |
10b3939b | 9655 | if (spec) |
f2f0e013 DJ |
9656 | { |
9657 | die = follow_die_ref (die, spec, &cu); | |
9658 | return dwarf2_attr (die, name, cu); | |
9659 | } | |
c5aa993b | 9660 | |
c906108c SS |
9661 | return NULL; |
9662 | } | |
9663 | ||
348e048f DE |
9664 | /* Return the named attribute or NULL if not there, |
9665 | but do not follow DW_AT_specification, etc. | |
9666 | This is for use in contexts where we're reading .debug_types dies. | |
9667 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
9668 | back up the chain, and we want to go down. */ | |
9669 | ||
9670 | static struct attribute * | |
9671 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name, | |
9672 | struct dwarf2_cu *cu) | |
9673 | { | |
9674 | unsigned int i; | |
9675 | ||
9676 | for (i = 0; i < die->num_attrs; ++i) | |
9677 | if (die->attrs[i].name == name) | |
9678 | return &die->attrs[i]; | |
9679 | ||
9680 | return NULL; | |
9681 | } | |
9682 | ||
05cf31d1 JB |
9683 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
9684 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 9685 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
9686 | |
9687 | static int | |
9688 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
9689 | { | |
9690 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
9691 | ||
9692 | return (attr && DW_UNSND (attr)); | |
9693 | } | |
9694 | ||
3ca72b44 | 9695 | static int |
e142c38c | 9696 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 9697 | { |
05cf31d1 JB |
9698 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
9699 | which value is non-zero. However, we have to be careful with | |
9700 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
9701 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
9702 | end up accidently finding a declaration attribute that belongs | |
9703 | to a different DIE referenced by the specification attribute, | |
9704 | even though the given DIE does not have a declaration attribute. */ | |
9705 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
9706 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
9707 | } |
9708 | ||
63d06c5c | 9709 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 9710 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
9711 | containing the return value on output. If there is no |
9712 | specification, but there is an abstract origin, that is | |
9713 | returned. */ | |
63d06c5c DC |
9714 | |
9715 | static struct die_info * | |
f2f0e013 | 9716 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 9717 | { |
f2f0e013 DJ |
9718 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
9719 | *spec_cu); | |
63d06c5c | 9720 | |
edb3359d DJ |
9721 | if (spec_attr == NULL) |
9722 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
9723 | ||
63d06c5c DC |
9724 | if (spec_attr == NULL) |
9725 | return NULL; | |
9726 | else | |
f2f0e013 | 9727 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 9728 | } |
c906108c | 9729 | |
debd256d JB |
9730 | /* Free the line_header structure *LH, and any arrays and strings it |
9731 | refers to. */ | |
9732 | static void | |
9733 | free_line_header (struct line_header *lh) | |
9734 | { | |
9735 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 9736 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
9737 | |
9738 | /* Remember that all the lh->file_names[i].name pointers are | |
9739 | pointers into debug_line_buffer, and don't need to be freed. */ | |
9740 | if (lh->file_names) | |
a8bc7b56 | 9741 | xfree (lh->file_names); |
debd256d JB |
9742 | |
9743 | /* Similarly for the include directory names. */ | |
9744 | if (lh->include_dirs) | |
a8bc7b56 | 9745 | xfree (lh->include_dirs); |
debd256d | 9746 | |
a8bc7b56 | 9747 | xfree (lh); |
debd256d JB |
9748 | } |
9749 | ||
9750 | ||
9751 | /* Add an entry to LH's include directory table. */ | |
9752 | static void | |
9753 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 9754 | { |
debd256d JB |
9755 | /* Grow the array if necessary. */ |
9756 | if (lh->include_dirs_size == 0) | |
c5aa993b | 9757 | { |
debd256d JB |
9758 | lh->include_dirs_size = 1; /* for testing */ |
9759 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
9760 | * sizeof (*lh->include_dirs)); | |
9761 | } | |
9762 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
9763 | { | |
9764 | lh->include_dirs_size *= 2; | |
9765 | lh->include_dirs = xrealloc (lh->include_dirs, | |
9766 | (lh->include_dirs_size | |
9767 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 9768 | } |
c906108c | 9769 | |
debd256d JB |
9770 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
9771 | } | |
6e70227d | 9772 | |
debd256d JB |
9773 | |
9774 | /* Add an entry to LH's file name table. */ | |
9775 | static void | |
9776 | add_file_name (struct line_header *lh, | |
9777 | char *name, | |
9778 | unsigned int dir_index, | |
9779 | unsigned int mod_time, | |
9780 | unsigned int length) | |
9781 | { | |
9782 | struct file_entry *fe; | |
9783 | ||
9784 | /* Grow the array if necessary. */ | |
9785 | if (lh->file_names_size == 0) | |
9786 | { | |
9787 | lh->file_names_size = 1; /* for testing */ | |
9788 | lh->file_names = xmalloc (lh->file_names_size | |
9789 | * sizeof (*lh->file_names)); | |
9790 | } | |
9791 | else if (lh->num_file_names >= lh->file_names_size) | |
9792 | { | |
9793 | lh->file_names_size *= 2; | |
9794 | lh->file_names = xrealloc (lh->file_names, | |
9795 | (lh->file_names_size | |
9796 | * sizeof (*lh->file_names))); | |
9797 | } | |
9798 | ||
9799 | fe = &lh->file_names[lh->num_file_names++]; | |
9800 | fe->name = name; | |
9801 | fe->dir_index = dir_index; | |
9802 | fe->mod_time = mod_time; | |
9803 | fe->length = length; | |
aaa75496 | 9804 | fe->included_p = 0; |
cb1df416 | 9805 | fe->symtab = NULL; |
debd256d | 9806 | } |
6e70227d | 9807 | |
debd256d JB |
9808 | |
9809 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
9810 | .debug_line, according to the endianness of ABFD. Return a pointer |
9811 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
9812 | |
9813 | NOTE: the strings in the include directory and file name tables of | |
9814 | the returned object point into debug_line_buffer, and must not be | |
9815 | freed. */ | |
9816 | static struct line_header * | |
9817 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 9818 | struct dwarf2_cu *cu) |
debd256d JB |
9819 | { |
9820 | struct cleanup *back_to; | |
9821 | struct line_header *lh; | |
fe1b8b76 | 9822 | gdb_byte *line_ptr; |
c764a876 | 9823 | unsigned int bytes_read, offset_size; |
debd256d JB |
9824 | int i; |
9825 | char *cur_dir, *cur_file; | |
9826 | ||
be391dca | 9827 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->line); |
dce234bc | 9828 | if (dwarf2_per_objfile->line.buffer == NULL) |
debd256d | 9829 | { |
e2e0b3e5 | 9830 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
9831 | return 0; |
9832 | } | |
9833 | ||
a738430d MK |
9834 | /* Make sure that at least there's room for the total_length field. |
9835 | That could be 12 bytes long, but we're just going to fudge that. */ | |
dce234bc | 9836 | if (offset + 4 >= dwarf2_per_objfile->line.size) |
debd256d | 9837 | { |
4d3c2250 | 9838 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
9839 | return 0; |
9840 | } | |
9841 | ||
9842 | lh = xmalloc (sizeof (*lh)); | |
9843 | memset (lh, 0, sizeof (*lh)); | |
9844 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
9845 | (void *) lh); | |
9846 | ||
dce234bc | 9847 | line_ptr = dwarf2_per_objfile->line.buffer + offset; |
debd256d | 9848 | |
a738430d | 9849 | /* Read in the header. */ |
6e70227d | 9850 | lh->total_length = |
c764a876 DE |
9851 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
9852 | &bytes_read, &offset_size); | |
debd256d | 9853 | line_ptr += bytes_read; |
dce234bc PP |
9854 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line.buffer |
9855 | + dwarf2_per_objfile->line.size)) | |
debd256d | 9856 | { |
4d3c2250 | 9857 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
9858 | return 0; |
9859 | } | |
9860 | lh->statement_program_end = line_ptr + lh->total_length; | |
9861 | lh->version = read_2_bytes (abfd, line_ptr); | |
9862 | line_ptr += 2; | |
c764a876 DE |
9863 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
9864 | line_ptr += offset_size; | |
debd256d JB |
9865 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
9866 | line_ptr += 1; | |
2dc7f7b3 TT |
9867 | if (lh->version >= 4) |
9868 | { | |
9869 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
9870 | line_ptr += 1; | |
9871 | } | |
9872 | else | |
9873 | lh->maximum_ops_per_instruction = 1; | |
9874 | ||
9875 | if (lh->maximum_ops_per_instruction == 0) | |
9876 | { | |
9877 | lh->maximum_ops_per_instruction = 1; | |
9878 | complaint (&symfile_complaints, | |
9879 | _("invalid maximum_ops_per_instruction in `.debug_line' section")); | |
9880 | } | |
9881 | ||
debd256d JB |
9882 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
9883 | line_ptr += 1; | |
9884 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
9885 | line_ptr += 1; | |
9886 | lh->line_range = read_1_byte (abfd, line_ptr); | |
9887 | line_ptr += 1; | |
9888 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
9889 | line_ptr += 1; | |
9890 | lh->standard_opcode_lengths | |
fe1b8b76 | 9891 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
9892 | |
9893 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
9894 | for (i = 1; i < lh->opcode_base; ++i) | |
9895 | { | |
9896 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
9897 | line_ptr += 1; | |
9898 | } | |
9899 | ||
a738430d | 9900 | /* Read directory table. */ |
9b1c24c8 | 9901 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
9902 | { |
9903 | line_ptr += bytes_read; | |
9904 | add_include_dir (lh, cur_dir); | |
9905 | } | |
9906 | line_ptr += bytes_read; | |
9907 | ||
a738430d | 9908 | /* Read file name table. */ |
9b1c24c8 | 9909 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
9910 | { |
9911 | unsigned int dir_index, mod_time, length; | |
9912 | ||
9913 | line_ptr += bytes_read; | |
9914 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9915 | line_ptr += bytes_read; | |
9916 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9917 | line_ptr += bytes_read; | |
9918 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9919 | line_ptr += bytes_read; | |
9920 | ||
9921 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
9922 | } | |
9923 | line_ptr += bytes_read; | |
6e70227d | 9924 | lh->statement_program_start = line_ptr; |
debd256d | 9925 | |
dce234bc PP |
9926 | if (line_ptr > (dwarf2_per_objfile->line.buffer |
9927 | + dwarf2_per_objfile->line.size)) | |
4d3c2250 | 9928 | complaint (&symfile_complaints, |
e2e0b3e5 | 9929 | _("line number info header doesn't fit in `.debug_line' section")); |
debd256d JB |
9930 | |
9931 | discard_cleanups (back_to); | |
9932 | return lh; | |
9933 | } | |
c906108c | 9934 | |
5fb290d7 DJ |
9935 | /* This function exists to work around a bug in certain compilers |
9936 | (particularly GCC 2.95), in which the first line number marker of a | |
9937 | function does not show up until after the prologue, right before | |
9938 | the second line number marker. This function shifts ADDRESS down | |
9939 | to the beginning of the function if necessary, and is called on | |
9940 | addresses passed to record_line. */ | |
9941 | ||
9942 | static CORE_ADDR | |
e142c38c | 9943 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
9944 | { |
9945 | struct function_range *fn; | |
9946 | ||
9947 | /* Find the function_range containing address. */ | |
e142c38c | 9948 | if (!cu->first_fn) |
5fb290d7 DJ |
9949 | return address; |
9950 | ||
e142c38c DJ |
9951 | if (!cu->cached_fn) |
9952 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 9953 | |
e142c38c | 9954 | fn = cu->cached_fn; |
5fb290d7 DJ |
9955 | while (fn) |
9956 | if (fn->lowpc <= address && fn->highpc > address) | |
9957 | goto found; | |
9958 | else | |
9959 | fn = fn->next; | |
9960 | ||
e142c38c DJ |
9961 | fn = cu->first_fn; |
9962 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
9963 | if (fn->lowpc <= address && fn->highpc > address) |
9964 | goto found; | |
9965 | else | |
9966 | fn = fn->next; | |
9967 | ||
9968 | return address; | |
9969 | ||
9970 | found: | |
9971 | if (fn->seen_line) | |
9972 | return address; | |
9973 | if (address != fn->lowpc) | |
4d3c2250 | 9974 | complaint (&symfile_complaints, |
e2e0b3e5 | 9975 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 9976 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
9977 | fn->seen_line = 1; |
9978 | return fn->lowpc; | |
9979 | } | |
9980 | ||
c6da4cef DE |
9981 | /* Subroutine of dwarf_decode_lines to simplify it. |
9982 | Return the file name of the psymtab for included file FILE_INDEX | |
9983 | in line header LH of PST. | |
9984 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
9985 | If space for the result is malloc'd, it will be freed by a cleanup. | |
9986 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
9987 | ||
9988 | static char * | |
9989 | psymtab_include_file_name (const struct line_header *lh, int file_index, | |
9990 | const struct partial_symtab *pst, | |
9991 | const char *comp_dir) | |
9992 | { | |
9993 | const struct file_entry fe = lh->file_names [file_index]; | |
9994 | char *include_name = fe.name; | |
9995 | char *include_name_to_compare = include_name; | |
9996 | char *dir_name = NULL; | |
9997 | char *pst_filename; | |
9998 | int file_is_pst; | |
9999 | ||
10000 | if (fe.dir_index) | |
10001 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
10002 | ||
10003 | if (!IS_ABSOLUTE_PATH (include_name) | |
10004 | && (dir_name != NULL || comp_dir != NULL)) | |
10005 | { | |
10006 | /* Avoid creating a duplicate psymtab for PST. | |
10007 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
10008 | Before we do the comparison, however, we need to account | |
10009 | for DIR_NAME and COMP_DIR. | |
10010 | First prepend dir_name (if non-NULL). If we still don't | |
10011 | have an absolute path prepend comp_dir (if non-NULL). | |
10012 | However, the directory we record in the include-file's | |
10013 | psymtab does not contain COMP_DIR (to match the | |
10014 | corresponding symtab(s)). | |
10015 | ||
10016 | Example: | |
10017 | ||
10018 | bash$ cd /tmp | |
10019 | bash$ gcc -g ./hello.c | |
10020 | include_name = "hello.c" | |
10021 | dir_name = "." | |
10022 | DW_AT_comp_dir = comp_dir = "/tmp" | |
10023 | DW_AT_name = "./hello.c" */ | |
10024 | ||
10025 | if (dir_name != NULL) | |
10026 | { | |
10027 | include_name = concat (dir_name, SLASH_STRING, | |
10028 | include_name, (char *)NULL); | |
10029 | include_name_to_compare = include_name; | |
10030 | make_cleanup (xfree, include_name); | |
10031 | } | |
10032 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
10033 | { | |
10034 | include_name_to_compare = concat (comp_dir, SLASH_STRING, | |
10035 | include_name, (char *)NULL); | |
10036 | } | |
10037 | } | |
10038 | ||
10039 | pst_filename = pst->filename; | |
10040 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
10041 | { | |
10042 | pst_filename = concat (pst->dirname, SLASH_STRING, | |
10043 | pst_filename, (char *)NULL); | |
10044 | } | |
10045 | ||
10046 | file_is_pst = strcmp (include_name_to_compare, pst_filename) == 0; | |
10047 | ||
10048 | if (include_name_to_compare != include_name) | |
10049 | xfree (include_name_to_compare); | |
10050 | if (pst_filename != pst->filename) | |
10051 | xfree (pst_filename); | |
10052 | ||
10053 | if (file_is_pst) | |
10054 | return NULL; | |
10055 | return include_name; | |
10056 | } | |
10057 | ||
aaa75496 JB |
10058 | /* Decode the Line Number Program (LNP) for the given line_header |
10059 | structure and CU. The actual information extracted and the type | |
10060 | of structures created from the LNP depends on the value of PST. | |
10061 | ||
10062 | 1. If PST is NULL, then this procedure uses the data from the program | |
10063 | to create all necessary symbol tables, and their linetables. | |
6e70227d | 10064 | |
aaa75496 JB |
10065 | 2. If PST is not NULL, this procedure reads the program to determine |
10066 | the list of files included by the unit represented by PST, and | |
c6da4cef DE |
10067 | builds all the associated partial symbol tables. |
10068 | ||
10069 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
10070 | It is used for relative paths in the line table. | |
10071 | NOTE: When processing partial symtabs (pst != NULL), | |
10072 | comp_dir == pst->dirname. | |
10073 | ||
10074 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
10075 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
10076 | symtab we don't use it in the name of the psymtabs we create. | |
10077 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
10078 | A good testcase for this is mb-inline.exp. */ | |
debd256d | 10079 | |
c906108c | 10080 | static void |
debd256d | 10081 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
aaa75496 | 10082 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 10083 | { |
a8c50c1f | 10084 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 10085 | gdb_byte *line_end; |
a8c50c1f | 10086 | unsigned int bytes_read, extended_len; |
c906108c | 10087 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
10088 | CORE_ADDR baseaddr; |
10089 | struct objfile *objfile = cu->objfile; | |
fbf65064 | 10090 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 10091 | const int decode_for_pst_p = (pst != NULL); |
cb1df416 | 10092 | struct subfile *last_subfile = NULL, *first_subfile = current_subfile; |
e142c38c DJ |
10093 | |
10094 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 10095 | |
debd256d JB |
10096 | line_ptr = lh->statement_program_start; |
10097 | line_end = lh->statement_program_end; | |
c906108c SS |
10098 | |
10099 | /* Read the statement sequences until there's nothing left. */ | |
10100 | while (line_ptr < line_end) | |
10101 | { | |
10102 | /* state machine registers */ | |
10103 | CORE_ADDR address = 0; | |
10104 | unsigned int file = 1; | |
10105 | unsigned int line = 1; | |
10106 | unsigned int column = 0; | |
debd256d | 10107 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
10108 | int basic_block = 0; |
10109 | int end_sequence = 0; | |
fbf65064 | 10110 | CORE_ADDR addr; |
2dc7f7b3 | 10111 | unsigned char op_index = 0; |
c906108c | 10112 | |
aaa75496 | 10113 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 10114 | { |
aaa75496 | 10115 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
10116 | /* lh->include_dirs and lh->file_names are 0-based, but the |
10117 | directory and file name numbers in the statement program | |
10118 | are 1-based. */ | |
10119 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 10120 | char *dir = NULL; |
a738430d | 10121 | |
debd256d JB |
10122 | if (fe->dir_index) |
10123 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
10124 | |
10125 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
10126 | } |
10127 | ||
a738430d | 10128 | /* Decode the table. */ |
c5aa993b | 10129 | while (!end_sequence) |
c906108c SS |
10130 | { |
10131 | op_code = read_1_byte (abfd, line_ptr); | |
10132 | line_ptr += 1; | |
59205f5a JB |
10133 | if (line_ptr > line_end) |
10134 | { | |
10135 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
10136 | break; | |
10137 | } | |
9aa1fe7e | 10138 | |
debd256d | 10139 | if (op_code >= lh->opcode_base) |
6e70227d | 10140 | { |
a738430d | 10141 | /* Special operand. */ |
debd256d | 10142 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
10143 | address += (((op_index + (adj_opcode / lh->line_range)) |
10144 | / lh->maximum_ops_per_instruction) | |
10145 | * lh->minimum_instruction_length); | |
10146 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
10147 | % lh->maximum_ops_per_instruction); | |
debd256d | 10148 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 10149 | if (lh->num_file_names < file || file == 0) |
25e43795 | 10150 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
10151 | /* For now we ignore lines not starting on an |
10152 | instruction boundary. */ | |
10153 | else if (op_index == 0) | |
25e43795 DJ |
10154 | { |
10155 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 10156 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
10157 | { |
10158 | if (last_subfile != current_subfile) | |
10159 | { | |
10160 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
10161 | if (last_subfile) | |
10162 | record_line (last_subfile, 0, addr); | |
10163 | last_subfile = current_subfile; | |
10164 | } | |
25e43795 | 10165 | /* Append row to matrix using current values. */ |
fbf65064 UW |
10166 | addr = check_cu_functions (address, cu); |
10167 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
10168 | record_line (current_subfile, line, addr); | |
366da635 | 10169 | } |
25e43795 | 10170 | } |
ca5f395d | 10171 | basic_block = 0; |
9aa1fe7e GK |
10172 | } |
10173 | else switch (op_code) | |
c906108c SS |
10174 | { |
10175 | case DW_LNS_extended_op: | |
a8c50c1f | 10176 | extended_len = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
473b7be6 | 10177 | line_ptr += bytes_read; |
a8c50c1f | 10178 | extended_end = line_ptr + extended_len; |
c906108c SS |
10179 | extended_op = read_1_byte (abfd, line_ptr); |
10180 | line_ptr += 1; | |
10181 | switch (extended_op) | |
10182 | { | |
10183 | case DW_LNE_end_sequence: | |
10184 | end_sequence = 1; | |
c906108c SS |
10185 | break; |
10186 | case DW_LNE_set_address: | |
e7c27a73 | 10187 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
2dc7f7b3 | 10188 | op_index = 0; |
107d2387 AC |
10189 | line_ptr += bytes_read; |
10190 | address += baseaddr; | |
c906108c SS |
10191 | break; |
10192 | case DW_LNE_define_file: | |
debd256d JB |
10193 | { |
10194 | char *cur_file; | |
10195 | unsigned int dir_index, mod_time, length; | |
6e70227d | 10196 | |
9b1c24c8 | 10197 | cur_file = read_direct_string (abfd, line_ptr, &bytes_read); |
debd256d JB |
10198 | line_ptr += bytes_read; |
10199 | dir_index = | |
10200 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10201 | line_ptr += bytes_read; | |
10202 | mod_time = | |
10203 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10204 | line_ptr += bytes_read; | |
10205 | length = | |
10206 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10207 | line_ptr += bytes_read; | |
10208 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
10209 | } | |
c906108c | 10210 | break; |
d0c6ba3d CC |
10211 | case DW_LNE_set_discriminator: |
10212 | /* The discriminator is not interesting to the debugger; | |
10213 | just ignore it. */ | |
10214 | line_ptr = extended_end; | |
10215 | break; | |
c906108c | 10216 | default: |
4d3c2250 | 10217 | complaint (&symfile_complaints, |
e2e0b3e5 | 10218 | _("mangled .debug_line section")); |
debd256d | 10219 | return; |
c906108c | 10220 | } |
a8c50c1f DJ |
10221 | /* Make sure that we parsed the extended op correctly. If e.g. |
10222 | we expected a different address size than the producer used, | |
10223 | we may have read the wrong number of bytes. */ | |
10224 | if (line_ptr != extended_end) | |
10225 | { | |
10226 | complaint (&symfile_complaints, | |
10227 | _("mangled .debug_line section")); | |
10228 | return; | |
10229 | } | |
c906108c SS |
10230 | break; |
10231 | case DW_LNS_copy: | |
59205f5a | 10232 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
10233 | dwarf2_debug_line_missing_file_complaint (); |
10234 | else | |
366da635 | 10235 | { |
25e43795 | 10236 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 10237 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
10238 | { |
10239 | if (last_subfile != current_subfile) | |
10240 | { | |
10241 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
10242 | if (last_subfile) | |
10243 | record_line (last_subfile, 0, addr); | |
10244 | last_subfile = current_subfile; | |
10245 | } | |
10246 | addr = check_cu_functions (address, cu); | |
10247 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
10248 | record_line (current_subfile, line, addr); | |
10249 | } | |
366da635 | 10250 | } |
c906108c SS |
10251 | basic_block = 0; |
10252 | break; | |
10253 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
10254 | { |
10255 | CORE_ADDR adjust | |
10256 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10257 | ||
10258 | address += (((op_index + adjust) | |
10259 | / lh->maximum_ops_per_instruction) | |
10260 | * lh->minimum_instruction_length); | |
10261 | op_index = ((op_index + adjust) | |
10262 | % lh->maximum_ops_per_instruction); | |
10263 | line_ptr += bytes_read; | |
10264 | } | |
c906108c SS |
10265 | break; |
10266 | case DW_LNS_advance_line: | |
10267 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
10268 | line_ptr += bytes_read; | |
10269 | break; | |
10270 | case DW_LNS_set_file: | |
debd256d | 10271 | { |
a738430d MK |
10272 | /* The arrays lh->include_dirs and lh->file_names are |
10273 | 0-based, but the directory and file name numbers in | |
10274 | the statement program are 1-based. */ | |
debd256d | 10275 | struct file_entry *fe; |
4f1520fb | 10276 | char *dir = NULL; |
a738430d | 10277 | |
debd256d JB |
10278 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
10279 | line_ptr += bytes_read; | |
59205f5a | 10280 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
10281 | dwarf2_debug_line_missing_file_complaint (); |
10282 | else | |
10283 | { | |
10284 | fe = &lh->file_names[file - 1]; | |
10285 | if (fe->dir_index) | |
10286 | dir = lh->include_dirs[fe->dir_index - 1]; | |
10287 | if (!decode_for_pst_p) | |
10288 | { | |
10289 | last_subfile = current_subfile; | |
10290 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
10291 | } | |
10292 | } | |
debd256d | 10293 | } |
c906108c SS |
10294 | break; |
10295 | case DW_LNS_set_column: | |
10296 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10297 | line_ptr += bytes_read; | |
10298 | break; | |
10299 | case DW_LNS_negate_stmt: | |
10300 | is_stmt = (!is_stmt); | |
10301 | break; | |
10302 | case DW_LNS_set_basic_block: | |
10303 | basic_block = 1; | |
10304 | break; | |
c2c6d25f JM |
10305 | /* Add to the address register of the state machine the |
10306 | address increment value corresponding to special opcode | |
a738430d MK |
10307 | 255. I.e., this value is scaled by the minimum |
10308 | instruction length since special opcode 255 would have | |
10309 | scaled the the increment. */ | |
c906108c | 10310 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
10311 | { |
10312 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
10313 | ||
10314 | address += (((op_index + adjust) | |
10315 | / lh->maximum_ops_per_instruction) | |
10316 | * lh->minimum_instruction_length); | |
10317 | op_index = ((op_index + adjust) | |
10318 | % lh->maximum_ops_per_instruction); | |
10319 | } | |
c906108c SS |
10320 | break; |
10321 | case DW_LNS_fixed_advance_pc: | |
10322 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 10323 | op_index = 0; |
c906108c SS |
10324 | line_ptr += 2; |
10325 | break; | |
9aa1fe7e | 10326 | default: |
a738430d MK |
10327 | { |
10328 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 10329 | int i; |
a738430d | 10330 | |
debd256d | 10331 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
10332 | { |
10333 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10334 | line_ptr += bytes_read; | |
10335 | } | |
10336 | } | |
c906108c SS |
10337 | } |
10338 | } | |
59205f5a JB |
10339 | if (lh->num_file_names < file || file == 0) |
10340 | dwarf2_debug_line_missing_file_complaint (); | |
10341 | else | |
10342 | { | |
10343 | lh->file_names[file - 1].included_p = 1; | |
10344 | if (!decode_for_pst_p) | |
fbf65064 UW |
10345 | { |
10346 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
10347 | record_line (current_subfile, 0, addr); | |
10348 | } | |
59205f5a | 10349 | } |
c906108c | 10350 | } |
aaa75496 JB |
10351 | |
10352 | if (decode_for_pst_p) | |
10353 | { | |
10354 | int file_index; | |
10355 | ||
10356 | /* Now that we're done scanning the Line Header Program, we can | |
10357 | create the psymtab of each included file. */ | |
10358 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
10359 | if (lh->file_names[file_index].included_p == 1) | |
10360 | { | |
c6da4cef DE |
10361 | char *include_name = |
10362 | psymtab_include_file_name (lh, file_index, pst, comp_dir); | |
10363 | if (include_name != NULL) | |
aaa75496 JB |
10364 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
10365 | } | |
10366 | } | |
cb1df416 DJ |
10367 | else |
10368 | { | |
10369 | /* Make sure a symtab is created for every file, even files | |
10370 | which contain only variables (i.e. no code with associated | |
10371 | line numbers). */ | |
10372 | ||
10373 | int i; | |
10374 | struct file_entry *fe; | |
10375 | ||
10376 | for (i = 0; i < lh->num_file_names; i++) | |
10377 | { | |
10378 | char *dir = NULL; | |
9a619af0 | 10379 | |
cb1df416 DJ |
10380 | fe = &lh->file_names[i]; |
10381 | if (fe->dir_index) | |
10382 | dir = lh->include_dirs[fe->dir_index - 1]; | |
10383 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
10384 | ||
10385 | /* Skip the main file; we don't need it, and it must be | |
10386 | allocated last, so that it will show up before the | |
10387 | non-primary symtabs in the objfile's symtab list. */ | |
10388 | if (current_subfile == first_subfile) | |
10389 | continue; | |
10390 | ||
10391 | if (current_subfile->symtab == NULL) | |
10392 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
10393 | cu->objfile); | |
10394 | fe->symtab = current_subfile->symtab; | |
10395 | } | |
10396 | } | |
c906108c SS |
10397 | } |
10398 | ||
10399 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
10400 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
10401 | or NULL if not known. COMP_DIR is the compilation directory for the |
10402 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
10403 | This routine tries to keep line numbers from identical absolute and |
10404 | relative file names in a common subfile. | |
10405 | ||
10406 | Using the `list' example from the GDB testsuite, which resides in | |
10407 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
10408 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
10409 | ||
c5aa993b JM |
10410 | DW_AT_name: /srcdir/list0.c |
10411 | DW_AT_comp_dir: /compdir | |
357e46e7 | 10412 | files.files[0].name: list0.h |
c5aa993b | 10413 | files.files[0].dir: /srcdir |
357e46e7 | 10414 | files.files[1].name: list0.c |
c5aa993b | 10415 | files.files[1].dir: /srcdir |
c906108c SS |
10416 | |
10417 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
10418 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
10419 | start_subfile will ensure that this happens provided that we pass the | |
10420 | concatenation of files.files[1].dir and files.files[1].name as the | |
10421 | subfile's name. */ | |
c906108c SS |
10422 | |
10423 | static void | |
4f1520fb | 10424 | dwarf2_start_subfile (char *filename, char *dirname, char *comp_dir) |
c906108c | 10425 | { |
4f1520fb FR |
10426 | char *fullname; |
10427 | ||
10428 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
10429 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
10430 | second argument to start_subfile. To be consistent, we do the | |
10431 | same here. In order not to lose the line information directory, | |
10432 | we concatenate it to the filename when it makes sense. | |
10433 | Note that the Dwarf3 standard says (speaking of filenames in line | |
10434 | information): ``The directory index is ignored for file names | |
10435 | that represent full path names''. Thus ignoring dirname in the | |
10436 | `else' branch below isn't an issue. */ | |
c906108c | 10437 | |
d5166ae1 | 10438 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
10439 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
10440 | else | |
10441 | fullname = filename; | |
c906108c | 10442 | |
4f1520fb FR |
10443 | start_subfile (fullname, comp_dir); |
10444 | ||
10445 | if (fullname != filename) | |
10446 | xfree (fullname); | |
c906108c SS |
10447 | } |
10448 | ||
4c2df51b DJ |
10449 | static void |
10450 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 10451 | struct dwarf2_cu *cu) |
4c2df51b | 10452 | { |
e7c27a73 DJ |
10453 | struct objfile *objfile = cu->objfile; |
10454 | struct comp_unit_head *cu_header = &cu->header; | |
10455 | ||
4c2df51b DJ |
10456 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
10457 | code here to turn a symbol with DW_AT_external and a | |
10458 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
10459 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
10460 | with some versions of binutils) where shared libraries could have | |
10461 | relocations against symbols in their debug information - the | |
10462 | minimal symbol would have the right address, but the debug info | |
10463 | would not. It's no longer necessary, because we will explicitly | |
10464 | apply relocations when we read in the debug information now. */ | |
10465 | ||
10466 | /* A DW_AT_location attribute with no contents indicates that a | |
10467 | variable has been optimized away. */ | |
10468 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
10469 | { | |
10470 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
10471 | return; | |
10472 | } | |
10473 | ||
10474 | /* Handle one degenerate form of location expression specially, to | |
10475 | preserve GDB's previous behavior when section offsets are | |
10476 | specified. If this is just a DW_OP_addr then mark this symbol | |
10477 | as LOC_STATIC. */ | |
10478 | ||
10479 | if (attr_form_is_block (attr) | |
10480 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
10481 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
10482 | { | |
891d2f0b | 10483 | unsigned int dummy; |
4c2df51b DJ |
10484 | |
10485 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 10486 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
907fc202 | 10487 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
10488 | fixup_symbol_section (sym, objfile); |
10489 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
10490 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
10491 | return; |
10492 | } | |
10493 | ||
10494 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
10495 | expression evaluator, and use LOC_COMPUTED only when necessary | |
10496 | (i.e. when the value of a register or memory location is | |
10497 | referenced, or a thread-local block, etc.). Then again, it might | |
10498 | not be worthwhile. I'm assuming that it isn't unless performance | |
10499 | or memory numbers show me otherwise. */ | |
10500 | ||
e7c27a73 | 10501 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
10502 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
10503 | } | |
10504 | ||
c906108c SS |
10505 | /* Given a pointer to a DWARF information entry, figure out if we need |
10506 | to make a symbol table entry for it, and if so, create a new entry | |
10507 | and return a pointer to it. | |
10508 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
10509 | used the passed type. |
10510 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
10511 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
10512 | |
10513 | static struct symbol * | |
34eaf542 TT |
10514 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
10515 | struct symbol *space) | |
c906108c | 10516 | { |
e7c27a73 | 10517 | struct objfile *objfile = cu->objfile; |
c906108c SS |
10518 | struct symbol *sym = NULL; |
10519 | char *name; | |
10520 | struct attribute *attr = NULL; | |
10521 | struct attribute *attr2 = NULL; | |
e142c38c | 10522 | CORE_ADDR baseaddr; |
e37fd15a SW |
10523 | struct pending **list_to_add = NULL; |
10524 | ||
edb3359d | 10525 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
10526 | |
10527 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 10528 | |
94af9270 | 10529 | name = dwarf2_name (die, cu); |
c906108c SS |
10530 | if (name) |
10531 | { | |
94af9270 | 10532 | const char *linkagename; |
34eaf542 | 10533 | int suppress_add = 0; |
94af9270 | 10534 | |
34eaf542 TT |
10535 | if (space) |
10536 | sym = space; | |
10537 | else | |
10538 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
c906108c | 10539 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
10540 | |
10541 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
33e5013e | 10542 | SYMBOL_SET_LANGUAGE (sym, cu->language); |
94af9270 KS |
10543 | linkagename = dwarf2_physname (name, die, cu); |
10544 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 10545 | |
f55ee35c JK |
10546 | /* Fortran does not have mangling standard and the mangling does differ |
10547 | between gfortran, iFort etc. */ | |
10548 | if (cu->language == language_fortran | |
b250c185 | 10549 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d SW |
10550 | symbol_set_demangled_name (&(sym->ginfo), |
10551 | (char *) dwarf2_full_name (name, die, cu), | |
10552 | NULL); | |
f55ee35c | 10553 | |
c906108c | 10554 | /* Default assumptions. |
c5aa993b | 10555 | Use the passed type or decode it from the die. */ |
176620f1 | 10556 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 10557 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
10558 | if (type != NULL) |
10559 | SYMBOL_TYPE (sym) = type; | |
10560 | else | |
e7c27a73 | 10561 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
10562 | attr = dwarf2_attr (die, |
10563 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
10564 | cu); | |
c906108c SS |
10565 | if (attr) |
10566 | { | |
10567 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
10568 | } | |
cb1df416 | 10569 | |
edb3359d DJ |
10570 | attr = dwarf2_attr (die, |
10571 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
10572 | cu); | |
cb1df416 DJ |
10573 | if (attr) |
10574 | { | |
10575 | int file_index = DW_UNSND (attr); | |
9a619af0 | 10576 | |
cb1df416 DJ |
10577 | if (cu->line_header == NULL |
10578 | || file_index > cu->line_header->num_file_names) | |
10579 | complaint (&symfile_complaints, | |
10580 | _("file index out of range")); | |
1c3d648d | 10581 | else if (file_index > 0) |
cb1df416 DJ |
10582 | { |
10583 | struct file_entry *fe; | |
9a619af0 | 10584 | |
cb1df416 DJ |
10585 | fe = &cu->line_header->file_names[file_index - 1]; |
10586 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
10587 | } | |
10588 | } | |
10589 | ||
c906108c SS |
10590 | switch (die->tag) |
10591 | { | |
10592 | case DW_TAG_label: | |
e142c38c | 10593 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
10594 | if (attr) |
10595 | { | |
10596 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
10597 | } | |
0f5238ed TT |
10598 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
10599 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
c906108c | 10600 | SYMBOL_CLASS (sym) = LOC_LABEL; |
0f5238ed | 10601 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
10602 | break; |
10603 | case DW_TAG_subprogram: | |
10604 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
10605 | finish_block. */ | |
10606 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 10607 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
10608 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
10609 | || cu->language == language_ada) | |
c906108c | 10610 | { |
2cfa0c8d JB |
10611 | /* Subprograms marked external are stored as a global symbol. |
10612 | Ada subprograms, whether marked external or not, are always | |
10613 | stored as a global symbol, because we want to be able to | |
10614 | access them globally. For instance, we want to be able | |
10615 | to break on a nested subprogram without having to | |
10616 | specify the context. */ | |
e37fd15a | 10617 | list_to_add = &global_symbols; |
c906108c SS |
10618 | } |
10619 | else | |
10620 | { | |
e37fd15a | 10621 | list_to_add = cu->list_in_scope; |
c906108c SS |
10622 | } |
10623 | break; | |
edb3359d DJ |
10624 | case DW_TAG_inlined_subroutine: |
10625 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
10626 | finish_block. */ | |
10627 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
10628 | SYMBOL_INLINED (sym) = 1; | |
10629 | /* Do not add the symbol to any lists. It will be found via | |
10630 | BLOCK_FUNCTION from the blockvector. */ | |
10631 | break; | |
34eaf542 TT |
10632 | case DW_TAG_template_value_param: |
10633 | suppress_add = 1; | |
10634 | /* Fall through. */ | |
72929c62 | 10635 | case DW_TAG_constant: |
c906108c | 10636 | case DW_TAG_variable: |
254e6b9e | 10637 | case DW_TAG_member: |
c906108c SS |
10638 | /* Compilation with minimal debug info may result in variables |
10639 | with missing type entries. Change the misleading `void' type | |
10640 | to something sensible. */ | |
10641 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
64c50499 | 10642 | SYMBOL_TYPE (sym) |
46bf5051 | 10643 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 10644 | |
e142c38c | 10645 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
10646 | /* In the case of DW_TAG_member, we should only be called for |
10647 | static const members. */ | |
10648 | if (die->tag == DW_TAG_member) | |
10649 | { | |
3863f96c DE |
10650 | /* dwarf2_add_field uses die_is_declaration, |
10651 | so we do the same. */ | |
254e6b9e DE |
10652 | gdb_assert (die_is_declaration (die, cu)); |
10653 | gdb_assert (attr); | |
10654 | } | |
c906108c SS |
10655 | if (attr) |
10656 | { | |
e7c27a73 | 10657 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 10658 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 10659 | if (!suppress_add) |
34eaf542 TT |
10660 | { |
10661 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 10662 | list_to_add = &global_symbols; |
34eaf542 | 10663 | else |
e37fd15a | 10664 | list_to_add = cu->list_in_scope; |
34eaf542 | 10665 | } |
c906108c SS |
10666 | break; |
10667 | } | |
e142c38c | 10668 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
10669 | if (attr) |
10670 | { | |
e7c27a73 | 10671 | var_decode_location (attr, sym, cu); |
e142c38c | 10672 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
caac4577 JG |
10673 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
10674 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
10675 | && !dwarf2_per_objfile->has_section_at_zero) | |
10676 | { | |
10677 | /* When a static variable is eliminated by the linker, | |
10678 | the corresponding debug information is not stripped | |
10679 | out, but the variable address is set to null; | |
10680 | do not add such variables into symbol table. */ | |
10681 | } | |
10682 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 10683 | { |
f55ee35c JK |
10684 | /* Workaround gfortran PR debug/40040 - it uses |
10685 | DW_AT_location for variables in -fPIC libraries which may | |
10686 | get overriden by other libraries/executable and get | |
10687 | a different address. Resolve it by the minimal symbol | |
10688 | which may come from inferior's executable using copy | |
10689 | relocation. Make this workaround only for gfortran as for | |
10690 | other compilers GDB cannot guess the minimal symbol | |
10691 | Fortran mangling kind. */ | |
10692 | if (cu->language == language_fortran && die->parent | |
10693 | && die->parent->tag == DW_TAG_module | |
10694 | && cu->producer | |
10695 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
10696 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
10697 | ||
1c809c68 TT |
10698 | /* A variable with DW_AT_external is never static, |
10699 | but it may be block-scoped. */ | |
10700 | list_to_add = (cu->list_in_scope == &file_symbols | |
10701 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 10702 | } |
c906108c | 10703 | else |
e37fd15a | 10704 | list_to_add = cu->list_in_scope; |
c906108c SS |
10705 | } |
10706 | else | |
10707 | { | |
10708 | /* We do not know the address of this symbol. | |
c5aa993b JM |
10709 | If it is an external symbol and we have type information |
10710 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
10711 | The address of the variable will then be determined from | |
10712 | the minimal symbol table whenever the variable is | |
10713 | referenced. */ | |
e142c38c | 10714 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 10715 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 10716 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 10717 | { |
0fe7935b DJ |
10718 | /* A variable with DW_AT_external is never static, but it |
10719 | may be block-scoped. */ | |
10720 | list_to_add = (cu->list_in_scope == &file_symbols | |
10721 | ? &global_symbols : cu->list_in_scope); | |
10722 | ||
c906108c | 10723 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
c906108c | 10724 | } |
442ddf59 JK |
10725 | else if (!die_is_declaration (die, cu)) |
10726 | { | |
10727 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
10728 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
10729 | if (!suppress_add) |
10730 | list_to_add = cu->list_in_scope; | |
442ddf59 | 10731 | } |
c906108c SS |
10732 | } |
10733 | break; | |
10734 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
10735 | /* If we are inside a function, mark this as an argument. If |
10736 | not, we might be looking at an argument to an inlined function | |
10737 | when we do not have enough information to show inlined frames; | |
10738 | pretend it's a local variable in that case so that the user can | |
10739 | still see it. */ | |
10740 | if (context_stack_depth > 0 | |
10741 | && context_stack[context_stack_depth - 1].name != NULL) | |
10742 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 10743 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
10744 | if (attr) |
10745 | { | |
e7c27a73 | 10746 | var_decode_location (attr, sym, cu); |
c906108c | 10747 | } |
e142c38c | 10748 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
10749 | if (attr) |
10750 | { | |
e7c27a73 | 10751 | dwarf2_const_value (attr, sym, cu); |
c906108c | 10752 | } |
f346a30d PM |
10753 | attr = dwarf2_attr (die, DW_AT_variable_parameter, cu); |
10754 | if (attr && DW_UNSND (attr)) | |
10755 | { | |
10756 | struct type *ref_type; | |
10757 | ||
10758 | ref_type = lookup_reference_type (SYMBOL_TYPE (sym)); | |
10759 | SYMBOL_TYPE (sym) = ref_type; | |
10760 | } | |
10761 | ||
e37fd15a | 10762 | list_to_add = cu->list_in_scope; |
c906108c SS |
10763 | break; |
10764 | case DW_TAG_unspecified_parameters: | |
10765 | /* From varargs functions; gdb doesn't seem to have any | |
10766 | interest in this information, so just ignore it for now. | |
10767 | (FIXME?) */ | |
10768 | break; | |
34eaf542 TT |
10769 | case DW_TAG_template_type_param: |
10770 | suppress_add = 1; | |
10771 | /* Fall through. */ | |
c906108c | 10772 | case DW_TAG_class_type: |
680b30c7 | 10773 | case DW_TAG_interface_type: |
c906108c SS |
10774 | case DW_TAG_structure_type: |
10775 | case DW_TAG_union_type: | |
72019c9c | 10776 | case DW_TAG_set_type: |
c906108c SS |
10777 | case DW_TAG_enumeration_type: |
10778 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 10779 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 10780 | |
63d06c5c | 10781 | { |
987504bb | 10782 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
10783 | really ever be static objects: otherwise, if you try |
10784 | to, say, break of a class's method and you're in a file | |
10785 | which doesn't mention that class, it won't work unless | |
10786 | the check for all static symbols in lookup_symbol_aux | |
10787 | saves you. See the OtherFileClass tests in | |
10788 | gdb.c++/namespace.exp. */ | |
10789 | ||
e37fd15a | 10790 | if (!suppress_add) |
34eaf542 | 10791 | { |
34eaf542 TT |
10792 | list_to_add = (cu->list_in_scope == &file_symbols |
10793 | && (cu->language == language_cplus | |
10794 | || cu->language == language_java) | |
10795 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 10796 | |
64382290 TT |
10797 | /* The semantics of C++ state that "struct foo { |
10798 | ... }" also defines a typedef for "foo". A Java | |
10799 | class declaration also defines a typedef for the | |
10800 | class. */ | |
10801 | if (cu->language == language_cplus | |
10802 | || cu->language == language_java | |
10803 | || cu->language == language_ada) | |
10804 | { | |
10805 | /* The symbol's name is already allocated along | |
10806 | with this objfile, so we don't need to | |
10807 | duplicate it for the type. */ | |
10808 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
10809 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
10810 | } | |
63d06c5c DC |
10811 | } |
10812 | } | |
c906108c SS |
10813 | break; |
10814 | case DW_TAG_typedef: | |
63d06c5c DC |
10815 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
10816 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e37fd15a | 10817 | list_to_add = cu->list_in_scope; |
63d06c5c | 10818 | break; |
c906108c | 10819 | case DW_TAG_base_type: |
a02abb62 | 10820 | case DW_TAG_subrange_type: |
c906108c | 10821 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 10822 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 10823 | list_to_add = cu->list_in_scope; |
c906108c SS |
10824 | break; |
10825 | case DW_TAG_enumerator: | |
e142c38c | 10826 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
10827 | if (attr) |
10828 | { | |
e7c27a73 | 10829 | dwarf2_const_value (attr, sym, cu); |
c906108c | 10830 | } |
63d06c5c DC |
10831 | { |
10832 | /* NOTE: carlton/2003-11-10: See comment above in the | |
10833 | DW_TAG_class_type, etc. block. */ | |
10834 | ||
e142c38c | 10835 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
10836 | && (cu->language == language_cplus |
10837 | || cu->language == language_java) | |
e142c38c | 10838 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 10839 | } |
c906108c | 10840 | break; |
5c4e30ca DC |
10841 | case DW_TAG_namespace: |
10842 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
e37fd15a | 10843 | list_to_add = &global_symbols; |
5c4e30ca | 10844 | break; |
c906108c SS |
10845 | default: |
10846 | /* Not a tag we recognize. Hopefully we aren't processing | |
10847 | trash data, but since we must specifically ignore things | |
10848 | we don't recognize, there is nothing else we should do at | |
10849 | this point. */ | |
e2e0b3e5 | 10850 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 10851 | dwarf_tag_name (die->tag)); |
c906108c SS |
10852 | break; |
10853 | } | |
df8a16a1 | 10854 | |
e37fd15a SW |
10855 | if (suppress_add) |
10856 | { | |
10857 | sym->hash_next = objfile->template_symbols; | |
10858 | objfile->template_symbols = sym; | |
10859 | list_to_add = NULL; | |
10860 | } | |
10861 | ||
10862 | if (list_to_add != NULL) | |
10863 | add_symbol_to_list (sym, list_to_add); | |
10864 | ||
df8a16a1 DJ |
10865 | /* For the benefit of old versions of GCC, check for anonymous |
10866 | namespaces based on the demangled name. */ | |
10867 | if (!processing_has_namespace_info | |
94af9270 | 10868 | && cu->language == language_cplus) |
df8a16a1 | 10869 | cp_scan_for_anonymous_namespaces (sym); |
c906108c SS |
10870 | } |
10871 | return (sym); | |
10872 | } | |
10873 | ||
34eaf542 TT |
10874 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
10875 | ||
10876 | static struct symbol * | |
10877 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
10878 | { | |
10879 | return new_symbol_full (die, type, cu, NULL); | |
10880 | } | |
10881 | ||
98bfdba5 PA |
10882 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
10883 | zero-extend it as appropriate for the symbol's type. The DWARF | |
10884 | standard (v4) is not entirely clear about the meaning of using | |
10885 | DW_FORM_dataN for a constant with a signed type, where the type is | |
10886 | wider than the data. The conclusion of a discussion on the DWARF | |
10887 | list was that this is unspecified. We choose to always zero-extend | |
10888 | because that is the interpretation long in use by GCC. */ | |
c906108c | 10889 | |
98bfdba5 PA |
10890 | static gdb_byte * |
10891 | dwarf2_const_value_data (struct attribute *attr, struct type *type, | |
10892 | const char *name, struct obstack *obstack, | |
10893 | struct dwarf2_cu *cu, long *value, int bits) | |
c906108c | 10894 | { |
e7c27a73 | 10895 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
10896 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
10897 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
10898 | LONGEST l = DW_UNSND (attr); |
10899 | ||
10900 | if (bits < sizeof (*value) * 8) | |
10901 | { | |
10902 | l &= ((LONGEST) 1 << bits) - 1; | |
10903 | *value = l; | |
10904 | } | |
10905 | else if (bits == sizeof (*value) * 8) | |
10906 | *value = l; | |
10907 | else | |
10908 | { | |
10909 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
10910 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
10911 | return bytes; | |
10912 | } | |
10913 | ||
10914 | return NULL; | |
10915 | } | |
10916 | ||
10917 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
10918 | the value does not fit in *VALUE, set *BYTES - either already | |
10919 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
10920 | or, set *BATON, if we translated the constant to a location | |
10921 | expression. */ | |
10922 | ||
10923 | static void | |
10924 | dwarf2_const_value_attr (struct attribute *attr, struct type *type, | |
10925 | const char *name, struct obstack *obstack, | |
10926 | struct dwarf2_cu *cu, | |
10927 | long *value, gdb_byte **bytes, | |
10928 | struct dwarf2_locexpr_baton **baton) | |
10929 | { | |
10930 | struct objfile *objfile = cu->objfile; | |
10931 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 10932 | struct dwarf_block *blk; |
98bfdba5 PA |
10933 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
10934 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
10935 | ||
10936 | *value = 0; | |
10937 | *bytes = NULL; | |
10938 | *baton = NULL; | |
c906108c SS |
10939 | |
10940 | switch (attr->form) | |
10941 | { | |
10942 | case DW_FORM_addr: | |
ac56253d | 10943 | { |
ac56253d TT |
10944 | gdb_byte *data; |
10945 | ||
98bfdba5 PA |
10946 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
10947 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 10948 | cu_header->addr_size, |
98bfdba5 | 10949 | TYPE_LENGTH (type)); |
ac56253d TT |
10950 | /* Symbols of this form are reasonably rare, so we just |
10951 | piggyback on the existing location code rather than writing | |
10952 | a new implementation of symbol_computed_ops. */ | |
98bfdba5 PA |
10953 | *baton = obstack_alloc (&objfile->objfile_obstack, |
10954 | sizeof (struct dwarf2_locexpr_baton)); | |
10955 | (*baton)->per_cu = cu->per_cu; | |
10956 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 10957 | |
98bfdba5 PA |
10958 | (*baton)->size = 2 + cu_header->addr_size; |
10959 | data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size); | |
10960 | (*baton)->data = data; | |
ac56253d TT |
10961 | |
10962 | data[0] = DW_OP_addr; | |
10963 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
10964 | byte_order, DW_ADDR (attr)); | |
10965 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 10966 | } |
c906108c | 10967 | break; |
4ac36638 | 10968 | case DW_FORM_string: |
93b5768b | 10969 | case DW_FORM_strp: |
98bfdba5 PA |
10970 | /* DW_STRING is already allocated on the objfile obstack, point |
10971 | directly to it. */ | |
10972 | *bytes = (gdb_byte *) DW_STRING (attr); | |
93b5768b | 10973 | break; |
c906108c SS |
10974 | case DW_FORM_block1: |
10975 | case DW_FORM_block2: | |
10976 | case DW_FORM_block4: | |
10977 | case DW_FORM_block: | |
2dc7f7b3 | 10978 | case DW_FORM_exprloc: |
c906108c | 10979 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
10980 | if (TYPE_LENGTH (type) != blk->size) |
10981 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
10982 | TYPE_LENGTH (type)); | |
10983 | *bytes = blk->data; | |
c906108c | 10984 | break; |
2df3850c JM |
10985 | |
10986 | /* The DW_AT_const_value attributes are supposed to carry the | |
10987 | symbol's value "represented as it would be on the target | |
10988 | architecture." By the time we get here, it's already been | |
10989 | converted to host endianness, so we just need to sign- or | |
10990 | zero-extend it as appropriate. */ | |
10991 | case DW_FORM_data1: | |
98bfdba5 | 10992 | *bytes = dwarf2_const_value_data (attr, type, name, obstack, cu, value, 8); |
2df3850c | 10993 | break; |
c906108c | 10994 | case DW_FORM_data2: |
98bfdba5 | 10995 | *bytes = dwarf2_const_value_data (attr, type, name, obstack, cu, value, 16); |
2df3850c | 10996 | break; |
c906108c | 10997 | case DW_FORM_data4: |
98bfdba5 | 10998 | *bytes = dwarf2_const_value_data (attr, type, name, obstack, cu, value, 32); |
2df3850c | 10999 | break; |
c906108c | 11000 | case DW_FORM_data8: |
98bfdba5 | 11001 | *bytes = dwarf2_const_value_data (attr, type, name, obstack, cu, value, 64); |
2df3850c JM |
11002 | break; |
11003 | ||
c906108c | 11004 | case DW_FORM_sdata: |
98bfdba5 | 11005 | *value = DW_SND (attr); |
2df3850c JM |
11006 | break; |
11007 | ||
c906108c | 11008 | case DW_FORM_udata: |
98bfdba5 | 11009 | *value = DW_UNSND (attr); |
c906108c | 11010 | break; |
2df3850c | 11011 | |
c906108c | 11012 | default: |
4d3c2250 | 11013 | complaint (&symfile_complaints, |
e2e0b3e5 | 11014 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 11015 | dwarf_form_name (attr->form)); |
98bfdba5 | 11016 | *value = 0; |
c906108c SS |
11017 | break; |
11018 | } | |
11019 | } | |
11020 | ||
2df3850c | 11021 | |
98bfdba5 PA |
11022 | /* Copy constant value from an attribute to a symbol. */ |
11023 | ||
2df3850c | 11024 | static void |
98bfdba5 PA |
11025 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
11026 | struct dwarf2_cu *cu) | |
2df3850c | 11027 | { |
98bfdba5 PA |
11028 | struct objfile *objfile = cu->objfile; |
11029 | struct comp_unit_head *cu_header = &cu->header; | |
11030 | long value; | |
11031 | gdb_byte *bytes; | |
11032 | struct dwarf2_locexpr_baton *baton; | |
2df3850c | 11033 | |
98bfdba5 PA |
11034 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
11035 | SYMBOL_PRINT_NAME (sym), | |
11036 | &objfile->objfile_obstack, cu, | |
11037 | &value, &bytes, &baton); | |
2df3850c | 11038 | |
98bfdba5 PA |
11039 | if (baton != NULL) |
11040 | { | |
11041 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
11042 | SYMBOL_LOCATION_BATON (sym) = baton; | |
11043 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
11044 | } | |
11045 | else if (bytes != NULL) | |
11046 | { | |
11047 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
11048 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
11049 | } | |
11050 | else | |
11051 | { | |
11052 | SYMBOL_VALUE (sym) = value; | |
11053 | SYMBOL_CLASS (sym) = LOC_CONST; | |
11054 | } | |
2df3850c JM |
11055 | } |
11056 | ||
c906108c SS |
11057 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
11058 | ||
11059 | static struct type * | |
e7c27a73 | 11060 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11061 | { |
c906108c | 11062 | struct attribute *type_attr; |
c906108c | 11063 | |
e142c38c | 11064 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
11065 | if (!type_attr) |
11066 | { | |
11067 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 11068 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 11069 | } |
348e048f | 11070 | |
673bfd45 | 11071 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
11072 | } |
11073 | ||
b4ba55a1 JB |
11074 | /* True iff CU's producer generates GNAT Ada auxiliary information |
11075 | that allows to find parallel types through that information instead | |
11076 | of having to do expensive parallel lookups by type name. */ | |
11077 | ||
11078 | static int | |
11079 | need_gnat_info (struct dwarf2_cu *cu) | |
11080 | { | |
11081 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
11082 | of GNAT produces this auxiliary information, without any indication | |
11083 | that it is produced. Part of enhancing the FSF version of GNAT | |
11084 | to produce that information will be to put in place an indicator | |
11085 | that we can use in order to determine whether the descriptive type | |
11086 | info is available or not. One suggestion that has been made is | |
11087 | to use a new attribute, attached to the CU die. For now, assume | |
11088 | that the descriptive type info is not available. */ | |
11089 | return 0; | |
11090 | } | |
11091 | ||
b4ba55a1 JB |
11092 | /* Return the auxiliary type of the die in question using its |
11093 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
11094 | attribute is not present. */ | |
11095 | ||
11096 | static struct type * | |
11097 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
11098 | { | |
b4ba55a1 | 11099 | struct attribute *type_attr; |
b4ba55a1 JB |
11100 | |
11101 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
11102 | if (!type_attr) | |
11103 | return NULL; | |
11104 | ||
673bfd45 | 11105 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
11106 | } |
11107 | ||
11108 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
11109 | descriptive type accordingly. */ | |
11110 | ||
11111 | static void | |
11112 | set_descriptive_type (struct type *type, struct die_info *die, | |
11113 | struct dwarf2_cu *cu) | |
11114 | { | |
11115 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
11116 | ||
11117 | if (descriptive_type) | |
11118 | { | |
11119 | ALLOCATE_GNAT_AUX_TYPE (type); | |
11120 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
11121 | } | |
11122 | } | |
11123 | ||
c906108c SS |
11124 | /* Return the containing type of the die in question using its |
11125 | DW_AT_containing_type attribute. */ | |
11126 | ||
11127 | static struct type * | |
e7c27a73 | 11128 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11129 | { |
c906108c | 11130 | struct attribute *type_attr; |
c906108c | 11131 | |
e142c38c | 11132 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
11133 | if (!type_attr) |
11134 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
11135 | "[in module %s]"), cu->objfile->name); | |
11136 | ||
673bfd45 | 11137 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
11138 | } |
11139 | ||
673bfd45 DE |
11140 | /* Look up the type of DIE in CU using its type attribute ATTR. |
11141 | If there is no type substitute an error marker. */ | |
11142 | ||
c906108c | 11143 | static struct type * |
673bfd45 DE |
11144 | lookup_die_type (struct die_info *die, struct attribute *attr, |
11145 | struct dwarf2_cu *cu) | |
c906108c | 11146 | { |
f792889a DJ |
11147 | struct type *this_type; |
11148 | ||
673bfd45 DE |
11149 | /* First see if we have it cached. */ |
11150 | ||
11151 | if (is_ref_attr (attr)) | |
11152 | { | |
11153 | unsigned int offset = dwarf2_get_ref_die_offset (attr); | |
11154 | ||
11155 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
11156 | } | |
11157 | else if (attr->form == DW_FORM_sig8) | |
11158 | { | |
11159 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
11160 | struct dwarf2_cu *sig_cu; | |
11161 | unsigned int offset; | |
11162 | ||
11163 | /* sig_type will be NULL if the signatured type is missing from | |
11164 | the debug info. */ | |
11165 | if (sig_type == NULL) | |
11166 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
11167 | "at 0x%x [in module %s]"), | |
11168 | die->offset, cu->objfile->name); | |
11169 | ||
11170 | gdb_assert (sig_type->per_cu.from_debug_types); | |
11171 | offset = sig_type->offset + sig_type->type_offset; | |
11172 | this_type = get_die_type_at_offset (offset, &sig_type->per_cu); | |
11173 | } | |
11174 | else | |
11175 | { | |
11176 | dump_die_for_error (die); | |
11177 | error (_("Dwarf Error: Bad type attribute %s [in module %s]"), | |
11178 | dwarf_attr_name (attr->name), cu->objfile->name); | |
11179 | } | |
11180 | ||
11181 | /* If not cached we need to read it in. */ | |
11182 | ||
11183 | if (this_type == NULL) | |
11184 | { | |
11185 | struct die_info *type_die; | |
11186 | struct dwarf2_cu *type_cu = cu; | |
11187 | ||
11188 | type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
11189 | /* If the type is cached, we should have found it above. */ | |
11190 | gdb_assert (get_die_type (type_die, type_cu) == NULL); | |
11191 | this_type = read_type_die_1 (type_die, type_cu); | |
11192 | } | |
11193 | ||
11194 | /* If we still don't have a type use an error marker. */ | |
11195 | ||
11196 | if (this_type == NULL) | |
c906108c | 11197 | { |
b00fdb78 TT |
11198 | char *message, *saved; |
11199 | ||
11200 | /* read_type_die already issued a complaint. */ | |
11201 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
11202 | cu->objfile->name, | |
11203 | cu->header.offset, | |
11204 | die->offset); | |
11205 | saved = obstack_copy0 (&cu->objfile->objfile_obstack, | |
11206 | message, strlen (message)); | |
11207 | xfree (message); | |
11208 | ||
11209 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, cu->objfile); | |
c906108c | 11210 | } |
673bfd45 | 11211 | |
f792889a | 11212 | return this_type; |
c906108c SS |
11213 | } |
11214 | ||
673bfd45 DE |
11215 | /* Return the type in DIE, CU. |
11216 | Returns NULL for invalid types. | |
11217 | ||
11218 | This first does a lookup in the appropriate type_hash table, | |
11219 | and only reads the die in if necessary. | |
11220 | ||
11221 | NOTE: This can be called when reading in partial or full symbols. */ | |
11222 | ||
f792889a | 11223 | static struct type * |
e7c27a73 | 11224 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11225 | { |
f792889a DJ |
11226 | struct type *this_type; |
11227 | ||
11228 | this_type = get_die_type (die, cu); | |
11229 | if (this_type) | |
11230 | return this_type; | |
11231 | ||
673bfd45 DE |
11232 | return read_type_die_1 (die, cu); |
11233 | } | |
11234 | ||
11235 | /* Read the type in DIE, CU. | |
11236 | Returns NULL for invalid types. */ | |
11237 | ||
11238 | static struct type * | |
11239 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
11240 | { | |
11241 | struct type *this_type = NULL; | |
11242 | ||
c906108c SS |
11243 | switch (die->tag) |
11244 | { | |
11245 | case DW_TAG_class_type: | |
680b30c7 | 11246 | case DW_TAG_interface_type: |
c906108c SS |
11247 | case DW_TAG_structure_type: |
11248 | case DW_TAG_union_type: | |
f792889a | 11249 | this_type = read_structure_type (die, cu); |
c906108c SS |
11250 | break; |
11251 | case DW_TAG_enumeration_type: | |
f792889a | 11252 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
11253 | break; |
11254 | case DW_TAG_subprogram: | |
11255 | case DW_TAG_subroutine_type: | |
edb3359d | 11256 | case DW_TAG_inlined_subroutine: |
f792889a | 11257 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
11258 | break; |
11259 | case DW_TAG_array_type: | |
f792889a | 11260 | this_type = read_array_type (die, cu); |
c906108c | 11261 | break; |
72019c9c | 11262 | case DW_TAG_set_type: |
f792889a | 11263 | this_type = read_set_type (die, cu); |
72019c9c | 11264 | break; |
c906108c | 11265 | case DW_TAG_pointer_type: |
f792889a | 11266 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
11267 | break; |
11268 | case DW_TAG_ptr_to_member_type: | |
f792889a | 11269 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
11270 | break; |
11271 | case DW_TAG_reference_type: | |
f792889a | 11272 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
11273 | break; |
11274 | case DW_TAG_const_type: | |
f792889a | 11275 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
11276 | break; |
11277 | case DW_TAG_volatile_type: | |
f792889a | 11278 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
11279 | break; |
11280 | case DW_TAG_string_type: | |
f792889a | 11281 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
11282 | break; |
11283 | case DW_TAG_typedef: | |
f792889a | 11284 | this_type = read_typedef (die, cu); |
c906108c | 11285 | break; |
a02abb62 | 11286 | case DW_TAG_subrange_type: |
f792889a | 11287 | this_type = read_subrange_type (die, cu); |
a02abb62 | 11288 | break; |
c906108c | 11289 | case DW_TAG_base_type: |
f792889a | 11290 | this_type = read_base_type (die, cu); |
c906108c | 11291 | break; |
81a17f79 | 11292 | case DW_TAG_unspecified_type: |
f792889a | 11293 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 11294 | break; |
0114d602 DJ |
11295 | case DW_TAG_namespace: |
11296 | this_type = read_namespace_type (die, cu); | |
11297 | break; | |
f55ee35c JK |
11298 | case DW_TAG_module: |
11299 | this_type = read_module_type (die, cu); | |
11300 | break; | |
c906108c | 11301 | default: |
a1f5b845 | 11302 | complaint (&symfile_complaints, _("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 11303 | dwarf_tag_name (die->tag)); |
c906108c SS |
11304 | break; |
11305 | } | |
63d06c5c | 11306 | |
f792889a | 11307 | return this_type; |
63d06c5c DC |
11308 | } |
11309 | ||
abc72ce4 DE |
11310 | /* See if we can figure out if the class lives in a namespace. We do |
11311 | this by looking for a member function; its demangled name will | |
11312 | contain namespace info, if there is any. | |
11313 | Return the computed name or NULL. | |
11314 | Space for the result is allocated on the objfile's obstack. | |
11315 | This is the full-die version of guess_partial_die_structure_name. | |
11316 | In this case we know DIE has no useful parent. */ | |
11317 | ||
11318 | static char * | |
11319 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
11320 | { | |
11321 | struct die_info *spec_die; | |
11322 | struct dwarf2_cu *spec_cu; | |
11323 | struct die_info *child; | |
11324 | ||
11325 | spec_cu = cu; | |
11326 | spec_die = die_specification (die, &spec_cu); | |
11327 | if (spec_die != NULL) | |
11328 | { | |
11329 | die = spec_die; | |
11330 | cu = spec_cu; | |
11331 | } | |
11332 | ||
11333 | for (child = die->child; | |
11334 | child != NULL; | |
11335 | child = child->sibling) | |
11336 | { | |
11337 | if (child->tag == DW_TAG_subprogram) | |
11338 | { | |
11339 | struct attribute *attr; | |
11340 | ||
11341 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
11342 | if (attr == NULL) | |
11343 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
11344 | if (attr != NULL) | |
11345 | { | |
11346 | char *actual_name | |
11347 | = language_class_name_from_physname (cu->language_defn, | |
11348 | DW_STRING (attr)); | |
11349 | char *name = NULL; | |
11350 | ||
11351 | if (actual_name != NULL) | |
11352 | { | |
11353 | char *die_name = dwarf2_name (die, cu); | |
11354 | ||
11355 | if (die_name != NULL | |
11356 | && strcmp (die_name, actual_name) != 0) | |
11357 | { | |
11358 | /* Strip off the class name from the full name. | |
11359 | We want the prefix. */ | |
11360 | int die_name_len = strlen (die_name); | |
11361 | int actual_name_len = strlen (actual_name); | |
11362 | ||
11363 | /* Test for '::' as a sanity check. */ | |
11364 | if (actual_name_len > die_name_len + 2 | |
11365 | && actual_name[actual_name_len - die_name_len - 1] == ':') | |
11366 | name = | |
11367 | obsavestring (actual_name, | |
11368 | actual_name_len - die_name_len - 2, | |
11369 | &cu->objfile->objfile_obstack); | |
11370 | } | |
11371 | } | |
11372 | xfree (actual_name); | |
11373 | return name; | |
11374 | } | |
11375 | } | |
11376 | } | |
11377 | ||
11378 | return NULL; | |
11379 | } | |
11380 | ||
fdde2d81 | 11381 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 11382 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 11383 | |
0114d602 DJ |
11384 | For example, if we're within the method foo() in the following |
11385 | code: | |
11386 | ||
11387 | namespace N { | |
11388 | class C { | |
11389 | void foo () { | |
11390 | } | |
11391 | }; | |
11392 | } | |
11393 | ||
11394 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 DC |
11395 | |
11396 | static char * | |
e142c38c | 11397 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 11398 | { |
0114d602 DJ |
11399 | struct die_info *parent, *spec_die; |
11400 | struct dwarf2_cu *spec_cu; | |
11401 | struct type *parent_type; | |
63d06c5c | 11402 | |
f55ee35c JK |
11403 | if (cu->language != language_cplus && cu->language != language_java |
11404 | && cu->language != language_fortran) | |
0114d602 DJ |
11405 | return ""; |
11406 | ||
11407 | /* We have to be careful in the presence of DW_AT_specification. | |
11408 | For example, with GCC 3.4, given the code | |
11409 | ||
11410 | namespace N { | |
11411 | void foo() { | |
11412 | // Definition of N::foo. | |
11413 | } | |
11414 | } | |
11415 | ||
11416 | then we'll have a tree of DIEs like this: | |
11417 | ||
11418 | 1: DW_TAG_compile_unit | |
11419 | 2: DW_TAG_namespace // N | |
11420 | 3: DW_TAG_subprogram // declaration of N::foo | |
11421 | 4: DW_TAG_subprogram // definition of N::foo | |
11422 | DW_AT_specification // refers to die #3 | |
11423 | ||
11424 | Thus, when processing die #4, we have to pretend that we're in | |
11425 | the context of its DW_AT_specification, namely the contex of die | |
11426 | #3. */ | |
11427 | spec_cu = cu; | |
11428 | spec_die = die_specification (die, &spec_cu); | |
11429 | if (spec_die == NULL) | |
11430 | parent = die->parent; | |
11431 | else | |
63d06c5c | 11432 | { |
0114d602 DJ |
11433 | parent = spec_die->parent; |
11434 | cu = spec_cu; | |
63d06c5c | 11435 | } |
0114d602 DJ |
11436 | |
11437 | if (parent == NULL) | |
11438 | return ""; | |
98bfdba5 PA |
11439 | else if (parent->building_fullname) |
11440 | { | |
11441 | const char *name; | |
11442 | const char *parent_name; | |
11443 | ||
11444 | /* It has been seen on RealView 2.2 built binaries, | |
11445 | DW_TAG_template_type_param types actually _defined_ as | |
11446 | children of the parent class: | |
11447 | ||
11448 | enum E {}; | |
11449 | template class <class Enum> Class{}; | |
11450 | Class<enum E> class_e; | |
11451 | ||
11452 | 1: DW_TAG_class_type (Class) | |
11453 | 2: DW_TAG_enumeration_type (E) | |
11454 | 3: DW_TAG_enumerator (enum1:0) | |
11455 | 3: DW_TAG_enumerator (enum2:1) | |
11456 | ... | |
11457 | 2: DW_TAG_template_type_param | |
11458 | DW_AT_type DW_FORM_ref_udata (E) | |
11459 | ||
11460 | Besides being broken debug info, it can put GDB into an | |
11461 | infinite loop. Consider: | |
11462 | ||
11463 | When we're building the full name for Class<E>, we'll start | |
11464 | at Class, and go look over its template type parameters, | |
11465 | finding E. We'll then try to build the full name of E, and | |
11466 | reach here. We're now trying to build the full name of E, | |
11467 | and look over the parent DIE for containing scope. In the | |
11468 | broken case, if we followed the parent DIE of E, we'd again | |
11469 | find Class, and once again go look at its template type | |
11470 | arguments, etc., etc. Simply don't consider such parent die | |
11471 | as source-level parent of this die (it can't be, the language | |
11472 | doesn't allow it), and break the loop here. */ | |
11473 | name = dwarf2_name (die, cu); | |
11474 | parent_name = dwarf2_name (parent, cu); | |
11475 | complaint (&symfile_complaints, | |
11476 | _("template param type '%s' defined within parent '%s'"), | |
11477 | name ? name : "<unknown>", | |
11478 | parent_name ? parent_name : "<unknown>"); | |
11479 | return ""; | |
11480 | } | |
63d06c5c | 11481 | else |
0114d602 DJ |
11482 | switch (parent->tag) |
11483 | { | |
63d06c5c | 11484 | case DW_TAG_namespace: |
0114d602 | 11485 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
11486 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
11487 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
11488 | Work around this problem here. */ | |
11489 | if (cu->language == language_cplus | |
11490 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
11491 | return ""; | |
0114d602 DJ |
11492 | /* We give a name to even anonymous namespaces. */ |
11493 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 11494 | case DW_TAG_class_type: |
680b30c7 | 11495 | case DW_TAG_interface_type: |
63d06c5c | 11496 | case DW_TAG_structure_type: |
0114d602 | 11497 | case DW_TAG_union_type: |
f55ee35c | 11498 | case DW_TAG_module: |
0114d602 DJ |
11499 | parent_type = read_type_die (parent, cu); |
11500 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
11501 | return TYPE_TAG_NAME (parent_type); | |
11502 | else | |
11503 | /* An anonymous structure is only allowed non-static data | |
11504 | members; no typedefs, no member functions, et cetera. | |
11505 | So it does not need a prefix. */ | |
11506 | return ""; | |
abc72ce4 DE |
11507 | case DW_TAG_compile_unit: |
11508 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ | |
11509 | if (cu->language == language_cplus | |
11510 | && dwarf2_per_objfile->types.asection != NULL | |
11511 | && die->child != NULL | |
11512 | && (die->tag == DW_TAG_class_type | |
11513 | || die->tag == DW_TAG_structure_type | |
11514 | || die->tag == DW_TAG_union_type)) | |
11515 | { | |
11516 | char *name = guess_full_die_structure_name (die, cu); | |
11517 | if (name != NULL) | |
11518 | return name; | |
11519 | } | |
11520 | return ""; | |
63d06c5c | 11521 | default: |
8176b9b8 | 11522 | return determine_prefix (parent, cu); |
63d06c5c | 11523 | } |
63d06c5c DC |
11524 | } |
11525 | ||
987504bb JJ |
11526 | /* Return a newly-allocated string formed by concatenating PREFIX and |
11527 | SUFFIX with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
11528 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, | |
11529 | perform an obconcat, otherwise allocate storage for the result. The CU argument | |
11530 | is used to determine the language and hence, the appropriate separator. */ | |
11531 | ||
f55ee35c | 11532 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
11533 | |
11534 | static char * | |
f55ee35c JK |
11535 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
11536 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 11537 | { |
f55ee35c | 11538 | const char *lead = ""; |
5c315b68 | 11539 | const char *sep; |
63d06c5c | 11540 | |
987504bb JJ |
11541 | if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0') |
11542 | sep = ""; | |
11543 | else if (cu->language == language_java) | |
11544 | sep = "."; | |
f55ee35c JK |
11545 | else if (cu->language == language_fortran && physname) |
11546 | { | |
11547 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
11548 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
11549 | ||
11550 | lead = "__"; | |
11551 | sep = "_MOD_"; | |
11552 | } | |
987504bb JJ |
11553 | else |
11554 | sep = "::"; | |
63d06c5c | 11555 | |
6dd47d34 DE |
11556 | if (prefix == NULL) |
11557 | prefix = ""; | |
11558 | if (suffix == NULL) | |
11559 | suffix = ""; | |
11560 | ||
987504bb JJ |
11561 | if (obs == NULL) |
11562 | { | |
11563 | char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 11564 | |
f55ee35c JK |
11565 | strcpy (retval, lead); |
11566 | strcat (retval, prefix); | |
6dd47d34 DE |
11567 | strcat (retval, sep); |
11568 | strcat (retval, suffix); | |
63d06c5c DC |
11569 | return retval; |
11570 | } | |
987504bb JJ |
11571 | else |
11572 | { | |
11573 | /* We have an obstack. */ | |
f55ee35c | 11574 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 11575 | } |
63d06c5c DC |
11576 | } |
11577 | ||
c906108c SS |
11578 | /* Return sibling of die, NULL if no sibling. */ |
11579 | ||
f9aca02d | 11580 | static struct die_info * |
fba45db2 | 11581 | sibling_die (struct die_info *die) |
c906108c | 11582 | { |
639d11d3 | 11583 | return die->sibling; |
c906108c SS |
11584 | } |
11585 | ||
71c25dea TT |
11586 | /* Get name of a die, return NULL if not found. */ |
11587 | ||
11588 | static char * | |
11589 | dwarf2_canonicalize_name (char *name, struct dwarf2_cu *cu, | |
11590 | struct obstack *obstack) | |
11591 | { | |
11592 | if (name && cu->language == language_cplus) | |
11593 | { | |
11594 | char *canon_name = cp_canonicalize_string (name); | |
11595 | ||
11596 | if (canon_name != NULL) | |
11597 | { | |
11598 | if (strcmp (canon_name, name) != 0) | |
11599 | name = obsavestring (canon_name, strlen (canon_name), | |
11600 | obstack); | |
11601 | xfree (canon_name); | |
11602 | } | |
11603 | } | |
11604 | ||
11605 | return name; | |
c906108c SS |
11606 | } |
11607 | ||
9219021c DC |
11608 | /* Get name of a die, return NULL if not found. */ |
11609 | ||
11610 | static char * | |
e142c38c | 11611 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
11612 | { |
11613 | struct attribute *attr; | |
11614 | ||
e142c38c | 11615 | attr = dwarf2_attr (die, DW_AT_name, cu); |
71c25dea TT |
11616 | if (!attr || !DW_STRING (attr)) |
11617 | return NULL; | |
11618 | ||
11619 | switch (die->tag) | |
11620 | { | |
11621 | case DW_TAG_compile_unit: | |
11622 | /* Compilation units have a DW_AT_name that is a filename, not | |
11623 | a source language identifier. */ | |
11624 | case DW_TAG_enumeration_type: | |
11625 | case DW_TAG_enumerator: | |
11626 | /* These tags always have simple identifiers already; no need | |
11627 | to canonicalize them. */ | |
11628 | return DW_STRING (attr); | |
907af001 | 11629 | |
418835cc KS |
11630 | case DW_TAG_subprogram: |
11631 | /* Java constructors will all be named "<init>", so return | |
11632 | the class name when we see this special case. */ | |
11633 | if (cu->language == language_java | |
11634 | && DW_STRING (attr) != NULL | |
11635 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
11636 | { | |
11637 | struct dwarf2_cu *spec_cu = cu; | |
11638 | struct die_info *spec_die; | |
11639 | ||
11640 | /* GCJ will output '<init>' for Java constructor names. | |
11641 | For this special case, return the name of the parent class. */ | |
11642 | ||
11643 | /* GCJ may output suprogram DIEs with AT_specification set. | |
11644 | If so, use the name of the specified DIE. */ | |
11645 | spec_die = die_specification (die, &spec_cu); | |
11646 | if (spec_die != NULL) | |
11647 | return dwarf2_name (spec_die, spec_cu); | |
11648 | ||
11649 | do | |
11650 | { | |
11651 | die = die->parent; | |
11652 | if (die->tag == DW_TAG_class_type) | |
11653 | return dwarf2_name (die, cu); | |
11654 | } | |
11655 | while (die->tag != DW_TAG_compile_unit); | |
11656 | } | |
907af001 UW |
11657 | break; |
11658 | ||
11659 | case DW_TAG_class_type: | |
11660 | case DW_TAG_interface_type: | |
11661 | case DW_TAG_structure_type: | |
11662 | case DW_TAG_union_type: | |
11663 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
11664 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
11665 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
11666 | and GCC 4.4. We work around this problem by ignoring these. */ | |
11667 | if (strncmp (DW_STRING (attr), "._", 2) == 0 | |
11668 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0) | |
11669 | return NULL; | |
11670 | break; | |
11671 | ||
71c25dea | 11672 | default: |
907af001 UW |
11673 | break; |
11674 | } | |
11675 | ||
11676 | if (!DW_STRING_IS_CANONICAL (attr)) | |
11677 | { | |
11678 | DW_STRING (attr) | |
11679 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
11680 | &cu->objfile->objfile_obstack); | |
11681 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 11682 | } |
907af001 | 11683 | return DW_STRING (attr); |
9219021c DC |
11684 | } |
11685 | ||
11686 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
11687 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
11688 | containing the return value on output. */ | |
9219021c DC |
11689 | |
11690 | static struct die_info * | |
f2f0e013 | 11691 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
11692 | { |
11693 | struct attribute *attr; | |
9219021c | 11694 | |
f2f0e013 | 11695 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
11696 | if (attr == NULL) |
11697 | return NULL; | |
11698 | ||
f2f0e013 | 11699 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
11700 | } |
11701 | ||
c906108c SS |
11702 | /* Convert a DIE tag into its string name. */ |
11703 | ||
11704 | static char * | |
aa1ee363 | 11705 | dwarf_tag_name (unsigned tag) |
c906108c SS |
11706 | { |
11707 | switch (tag) | |
11708 | { | |
11709 | case DW_TAG_padding: | |
11710 | return "DW_TAG_padding"; | |
11711 | case DW_TAG_array_type: | |
11712 | return "DW_TAG_array_type"; | |
11713 | case DW_TAG_class_type: | |
11714 | return "DW_TAG_class_type"; | |
11715 | case DW_TAG_entry_point: | |
11716 | return "DW_TAG_entry_point"; | |
11717 | case DW_TAG_enumeration_type: | |
11718 | return "DW_TAG_enumeration_type"; | |
11719 | case DW_TAG_formal_parameter: | |
11720 | return "DW_TAG_formal_parameter"; | |
11721 | case DW_TAG_imported_declaration: | |
11722 | return "DW_TAG_imported_declaration"; | |
11723 | case DW_TAG_label: | |
11724 | return "DW_TAG_label"; | |
11725 | case DW_TAG_lexical_block: | |
11726 | return "DW_TAG_lexical_block"; | |
11727 | case DW_TAG_member: | |
11728 | return "DW_TAG_member"; | |
11729 | case DW_TAG_pointer_type: | |
11730 | return "DW_TAG_pointer_type"; | |
11731 | case DW_TAG_reference_type: | |
11732 | return "DW_TAG_reference_type"; | |
11733 | case DW_TAG_compile_unit: | |
11734 | return "DW_TAG_compile_unit"; | |
11735 | case DW_TAG_string_type: | |
11736 | return "DW_TAG_string_type"; | |
11737 | case DW_TAG_structure_type: | |
11738 | return "DW_TAG_structure_type"; | |
11739 | case DW_TAG_subroutine_type: | |
11740 | return "DW_TAG_subroutine_type"; | |
11741 | case DW_TAG_typedef: | |
11742 | return "DW_TAG_typedef"; | |
11743 | case DW_TAG_union_type: | |
11744 | return "DW_TAG_union_type"; | |
11745 | case DW_TAG_unspecified_parameters: | |
11746 | return "DW_TAG_unspecified_parameters"; | |
11747 | case DW_TAG_variant: | |
11748 | return "DW_TAG_variant"; | |
11749 | case DW_TAG_common_block: | |
11750 | return "DW_TAG_common_block"; | |
11751 | case DW_TAG_common_inclusion: | |
11752 | return "DW_TAG_common_inclusion"; | |
11753 | case DW_TAG_inheritance: | |
11754 | return "DW_TAG_inheritance"; | |
11755 | case DW_TAG_inlined_subroutine: | |
11756 | return "DW_TAG_inlined_subroutine"; | |
11757 | case DW_TAG_module: | |
11758 | return "DW_TAG_module"; | |
11759 | case DW_TAG_ptr_to_member_type: | |
11760 | return "DW_TAG_ptr_to_member_type"; | |
11761 | case DW_TAG_set_type: | |
11762 | return "DW_TAG_set_type"; | |
11763 | case DW_TAG_subrange_type: | |
11764 | return "DW_TAG_subrange_type"; | |
11765 | case DW_TAG_with_stmt: | |
11766 | return "DW_TAG_with_stmt"; | |
11767 | case DW_TAG_access_declaration: | |
11768 | return "DW_TAG_access_declaration"; | |
11769 | case DW_TAG_base_type: | |
11770 | return "DW_TAG_base_type"; | |
11771 | case DW_TAG_catch_block: | |
11772 | return "DW_TAG_catch_block"; | |
11773 | case DW_TAG_const_type: | |
11774 | return "DW_TAG_const_type"; | |
11775 | case DW_TAG_constant: | |
11776 | return "DW_TAG_constant"; | |
11777 | case DW_TAG_enumerator: | |
11778 | return "DW_TAG_enumerator"; | |
11779 | case DW_TAG_file_type: | |
11780 | return "DW_TAG_file_type"; | |
11781 | case DW_TAG_friend: | |
11782 | return "DW_TAG_friend"; | |
11783 | case DW_TAG_namelist: | |
11784 | return "DW_TAG_namelist"; | |
11785 | case DW_TAG_namelist_item: | |
11786 | return "DW_TAG_namelist_item"; | |
11787 | case DW_TAG_packed_type: | |
11788 | return "DW_TAG_packed_type"; | |
11789 | case DW_TAG_subprogram: | |
11790 | return "DW_TAG_subprogram"; | |
11791 | case DW_TAG_template_type_param: | |
11792 | return "DW_TAG_template_type_param"; | |
11793 | case DW_TAG_template_value_param: | |
11794 | return "DW_TAG_template_value_param"; | |
11795 | case DW_TAG_thrown_type: | |
11796 | return "DW_TAG_thrown_type"; | |
11797 | case DW_TAG_try_block: | |
11798 | return "DW_TAG_try_block"; | |
11799 | case DW_TAG_variant_part: | |
11800 | return "DW_TAG_variant_part"; | |
11801 | case DW_TAG_variable: | |
11802 | return "DW_TAG_variable"; | |
11803 | case DW_TAG_volatile_type: | |
11804 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
11805 | case DW_TAG_dwarf_procedure: |
11806 | return "DW_TAG_dwarf_procedure"; | |
11807 | case DW_TAG_restrict_type: | |
11808 | return "DW_TAG_restrict_type"; | |
11809 | case DW_TAG_interface_type: | |
11810 | return "DW_TAG_interface_type"; | |
11811 | case DW_TAG_namespace: | |
11812 | return "DW_TAG_namespace"; | |
11813 | case DW_TAG_imported_module: | |
11814 | return "DW_TAG_imported_module"; | |
11815 | case DW_TAG_unspecified_type: | |
11816 | return "DW_TAG_unspecified_type"; | |
11817 | case DW_TAG_partial_unit: | |
11818 | return "DW_TAG_partial_unit"; | |
11819 | case DW_TAG_imported_unit: | |
11820 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
11821 | case DW_TAG_condition: |
11822 | return "DW_TAG_condition"; | |
11823 | case DW_TAG_shared_type: | |
11824 | return "DW_TAG_shared_type"; | |
348e048f DE |
11825 | case DW_TAG_type_unit: |
11826 | return "DW_TAG_type_unit"; | |
c906108c SS |
11827 | case DW_TAG_MIPS_loop: |
11828 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
11829 | case DW_TAG_HP_array_descriptor: |
11830 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
11831 | case DW_TAG_format_label: |
11832 | return "DW_TAG_format_label"; | |
11833 | case DW_TAG_function_template: | |
11834 | return "DW_TAG_function_template"; | |
11835 | case DW_TAG_class_template: | |
11836 | return "DW_TAG_class_template"; | |
b7619582 GF |
11837 | case DW_TAG_GNU_BINCL: |
11838 | return "DW_TAG_GNU_BINCL"; | |
11839 | case DW_TAG_GNU_EINCL: | |
11840 | return "DW_TAG_GNU_EINCL"; | |
11841 | case DW_TAG_upc_shared_type: | |
11842 | return "DW_TAG_upc_shared_type"; | |
11843 | case DW_TAG_upc_strict_type: | |
11844 | return "DW_TAG_upc_strict_type"; | |
11845 | case DW_TAG_upc_relaxed_type: | |
11846 | return "DW_TAG_upc_relaxed_type"; | |
11847 | case DW_TAG_PGI_kanji_type: | |
11848 | return "DW_TAG_PGI_kanji_type"; | |
11849 | case DW_TAG_PGI_interface_block: | |
11850 | return "DW_TAG_PGI_interface_block"; | |
c906108c SS |
11851 | default: |
11852 | return "DW_TAG_<unknown>"; | |
11853 | } | |
11854 | } | |
11855 | ||
11856 | /* Convert a DWARF attribute code into its string name. */ | |
11857 | ||
11858 | static char * | |
aa1ee363 | 11859 | dwarf_attr_name (unsigned attr) |
c906108c SS |
11860 | { |
11861 | switch (attr) | |
11862 | { | |
11863 | case DW_AT_sibling: | |
11864 | return "DW_AT_sibling"; | |
11865 | case DW_AT_location: | |
11866 | return "DW_AT_location"; | |
11867 | case DW_AT_name: | |
11868 | return "DW_AT_name"; | |
11869 | case DW_AT_ordering: | |
11870 | return "DW_AT_ordering"; | |
11871 | case DW_AT_subscr_data: | |
11872 | return "DW_AT_subscr_data"; | |
11873 | case DW_AT_byte_size: | |
11874 | return "DW_AT_byte_size"; | |
11875 | case DW_AT_bit_offset: | |
11876 | return "DW_AT_bit_offset"; | |
11877 | case DW_AT_bit_size: | |
11878 | return "DW_AT_bit_size"; | |
11879 | case DW_AT_element_list: | |
11880 | return "DW_AT_element_list"; | |
11881 | case DW_AT_stmt_list: | |
11882 | return "DW_AT_stmt_list"; | |
11883 | case DW_AT_low_pc: | |
11884 | return "DW_AT_low_pc"; | |
11885 | case DW_AT_high_pc: | |
11886 | return "DW_AT_high_pc"; | |
11887 | case DW_AT_language: | |
11888 | return "DW_AT_language"; | |
11889 | case DW_AT_member: | |
11890 | return "DW_AT_member"; | |
11891 | case DW_AT_discr: | |
11892 | return "DW_AT_discr"; | |
11893 | case DW_AT_discr_value: | |
11894 | return "DW_AT_discr_value"; | |
11895 | case DW_AT_visibility: | |
11896 | return "DW_AT_visibility"; | |
11897 | case DW_AT_import: | |
11898 | return "DW_AT_import"; | |
11899 | case DW_AT_string_length: | |
11900 | return "DW_AT_string_length"; | |
11901 | case DW_AT_common_reference: | |
11902 | return "DW_AT_common_reference"; | |
11903 | case DW_AT_comp_dir: | |
11904 | return "DW_AT_comp_dir"; | |
11905 | case DW_AT_const_value: | |
11906 | return "DW_AT_const_value"; | |
11907 | case DW_AT_containing_type: | |
11908 | return "DW_AT_containing_type"; | |
11909 | case DW_AT_default_value: | |
11910 | return "DW_AT_default_value"; | |
11911 | case DW_AT_inline: | |
11912 | return "DW_AT_inline"; | |
11913 | case DW_AT_is_optional: | |
11914 | return "DW_AT_is_optional"; | |
11915 | case DW_AT_lower_bound: | |
11916 | return "DW_AT_lower_bound"; | |
11917 | case DW_AT_producer: | |
11918 | return "DW_AT_producer"; | |
11919 | case DW_AT_prototyped: | |
11920 | return "DW_AT_prototyped"; | |
11921 | case DW_AT_return_addr: | |
11922 | return "DW_AT_return_addr"; | |
11923 | case DW_AT_start_scope: | |
11924 | return "DW_AT_start_scope"; | |
09fa0d7c JK |
11925 | case DW_AT_bit_stride: |
11926 | return "DW_AT_bit_stride"; | |
c906108c SS |
11927 | case DW_AT_upper_bound: |
11928 | return "DW_AT_upper_bound"; | |
11929 | case DW_AT_abstract_origin: | |
11930 | return "DW_AT_abstract_origin"; | |
11931 | case DW_AT_accessibility: | |
11932 | return "DW_AT_accessibility"; | |
11933 | case DW_AT_address_class: | |
11934 | return "DW_AT_address_class"; | |
11935 | case DW_AT_artificial: | |
11936 | return "DW_AT_artificial"; | |
11937 | case DW_AT_base_types: | |
11938 | return "DW_AT_base_types"; | |
11939 | case DW_AT_calling_convention: | |
11940 | return "DW_AT_calling_convention"; | |
11941 | case DW_AT_count: | |
11942 | return "DW_AT_count"; | |
11943 | case DW_AT_data_member_location: | |
11944 | return "DW_AT_data_member_location"; | |
11945 | case DW_AT_decl_column: | |
11946 | return "DW_AT_decl_column"; | |
11947 | case DW_AT_decl_file: | |
11948 | return "DW_AT_decl_file"; | |
11949 | case DW_AT_decl_line: | |
11950 | return "DW_AT_decl_line"; | |
11951 | case DW_AT_declaration: | |
11952 | return "DW_AT_declaration"; | |
11953 | case DW_AT_discr_list: | |
11954 | return "DW_AT_discr_list"; | |
11955 | case DW_AT_encoding: | |
11956 | return "DW_AT_encoding"; | |
11957 | case DW_AT_external: | |
11958 | return "DW_AT_external"; | |
11959 | case DW_AT_frame_base: | |
11960 | return "DW_AT_frame_base"; | |
11961 | case DW_AT_friend: | |
11962 | return "DW_AT_friend"; | |
11963 | case DW_AT_identifier_case: | |
11964 | return "DW_AT_identifier_case"; | |
11965 | case DW_AT_macro_info: | |
11966 | return "DW_AT_macro_info"; | |
11967 | case DW_AT_namelist_items: | |
11968 | return "DW_AT_namelist_items"; | |
11969 | case DW_AT_priority: | |
11970 | return "DW_AT_priority"; | |
11971 | case DW_AT_segment: | |
11972 | return "DW_AT_segment"; | |
11973 | case DW_AT_specification: | |
11974 | return "DW_AT_specification"; | |
11975 | case DW_AT_static_link: | |
11976 | return "DW_AT_static_link"; | |
11977 | case DW_AT_type: | |
11978 | return "DW_AT_type"; | |
11979 | case DW_AT_use_location: | |
11980 | return "DW_AT_use_location"; | |
11981 | case DW_AT_variable_parameter: | |
11982 | return "DW_AT_variable_parameter"; | |
11983 | case DW_AT_virtuality: | |
11984 | return "DW_AT_virtuality"; | |
11985 | case DW_AT_vtable_elem_location: | |
11986 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 11987 | /* DWARF 3 values. */ |
d9fa45fe DC |
11988 | case DW_AT_allocated: |
11989 | return "DW_AT_allocated"; | |
11990 | case DW_AT_associated: | |
11991 | return "DW_AT_associated"; | |
11992 | case DW_AT_data_location: | |
11993 | return "DW_AT_data_location"; | |
09fa0d7c JK |
11994 | case DW_AT_byte_stride: |
11995 | return "DW_AT_byte_stride"; | |
d9fa45fe DC |
11996 | case DW_AT_entry_pc: |
11997 | return "DW_AT_entry_pc"; | |
11998 | case DW_AT_use_UTF8: | |
11999 | return "DW_AT_use_UTF8"; | |
12000 | case DW_AT_extension: | |
12001 | return "DW_AT_extension"; | |
12002 | case DW_AT_ranges: | |
12003 | return "DW_AT_ranges"; | |
12004 | case DW_AT_trampoline: | |
12005 | return "DW_AT_trampoline"; | |
12006 | case DW_AT_call_column: | |
12007 | return "DW_AT_call_column"; | |
12008 | case DW_AT_call_file: | |
12009 | return "DW_AT_call_file"; | |
12010 | case DW_AT_call_line: | |
12011 | return "DW_AT_call_line"; | |
b7619582 GF |
12012 | case DW_AT_description: |
12013 | return "DW_AT_description"; | |
12014 | case DW_AT_binary_scale: | |
12015 | return "DW_AT_binary_scale"; | |
12016 | case DW_AT_decimal_scale: | |
12017 | return "DW_AT_decimal_scale"; | |
12018 | case DW_AT_small: | |
12019 | return "DW_AT_small"; | |
12020 | case DW_AT_decimal_sign: | |
12021 | return "DW_AT_decimal_sign"; | |
12022 | case DW_AT_digit_count: | |
12023 | return "DW_AT_digit_count"; | |
12024 | case DW_AT_picture_string: | |
12025 | return "DW_AT_picture_string"; | |
12026 | case DW_AT_mutable: | |
12027 | return "DW_AT_mutable"; | |
12028 | case DW_AT_threads_scaled: | |
12029 | return "DW_AT_threads_scaled"; | |
12030 | case DW_AT_explicit: | |
12031 | return "DW_AT_explicit"; | |
12032 | case DW_AT_object_pointer: | |
12033 | return "DW_AT_object_pointer"; | |
12034 | case DW_AT_endianity: | |
12035 | return "DW_AT_endianity"; | |
12036 | case DW_AT_elemental: | |
12037 | return "DW_AT_elemental"; | |
12038 | case DW_AT_pure: | |
12039 | return "DW_AT_pure"; | |
12040 | case DW_AT_recursive: | |
12041 | return "DW_AT_recursive"; | |
348e048f DE |
12042 | /* DWARF 4 values. */ |
12043 | case DW_AT_signature: | |
12044 | return "DW_AT_signature"; | |
31ef98ae TT |
12045 | case DW_AT_linkage_name: |
12046 | return "DW_AT_linkage_name"; | |
b7619582 | 12047 | /* SGI/MIPS extensions. */ |
c764a876 | 12048 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
c906108c SS |
12049 | case DW_AT_MIPS_fde: |
12050 | return "DW_AT_MIPS_fde"; | |
c764a876 | 12051 | #endif |
c906108c SS |
12052 | case DW_AT_MIPS_loop_begin: |
12053 | return "DW_AT_MIPS_loop_begin"; | |
12054 | case DW_AT_MIPS_tail_loop_begin: | |
12055 | return "DW_AT_MIPS_tail_loop_begin"; | |
12056 | case DW_AT_MIPS_epilog_begin: | |
12057 | return "DW_AT_MIPS_epilog_begin"; | |
12058 | case DW_AT_MIPS_loop_unroll_factor: | |
12059 | return "DW_AT_MIPS_loop_unroll_factor"; | |
12060 | case DW_AT_MIPS_software_pipeline_depth: | |
12061 | return "DW_AT_MIPS_software_pipeline_depth"; | |
12062 | case DW_AT_MIPS_linkage_name: | |
12063 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
12064 | case DW_AT_MIPS_stride: |
12065 | return "DW_AT_MIPS_stride"; | |
12066 | case DW_AT_MIPS_abstract_name: | |
12067 | return "DW_AT_MIPS_abstract_name"; | |
12068 | case DW_AT_MIPS_clone_origin: | |
12069 | return "DW_AT_MIPS_clone_origin"; | |
12070 | case DW_AT_MIPS_has_inlines: | |
12071 | return "DW_AT_MIPS_has_inlines"; | |
b7619582 | 12072 | /* HP extensions. */ |
c764a876 | 12073 | #ifndef MIPS /* collides with DW_AT_MIPS_fde */ |
b7619582 GF |
12074 | case DW_AT_HP_block_index: |
12075 | return "DW_AT_HP_block_index"; | |
c764a876 | 12076 | #endif |
b7619582 GF |
12077 | case DW_AT_HP_unmodifiable: |
12078 | return "DW_AT_HP_unmodifiable"; | |
12079 | case DW_AT_HP_actuals_stmt_list: | |
12080 | return "DW_AT_HP_actuals_stmt_list"; | |
12081 | case DW_AT_HP_proc_per_section: | |
12082 | return "DW_AT_HP_proc_per_section"; | |
12083 | case DW_AT_HP_raw_data_ptr: | |
12084 | return "DW_AT_HP_raw_data_ptr"; | |
12085 | case DW_AT_HP_pass_by_reference: | |
12086 | return "DW_AT_HP_pass_by_reference"; | |
12087 | case DW_AT_HP_opt_level: | |
12088 | return "DW_AT_HP_opt_level"; | |
12089 | case DW_AT_HP_prof_version_id: | |
12090 | return "DW_AT_HP_prof_version_id"; | |
12091 | case DW_AT_HP_opt_flags: | |
12092 | return "DW_AT_HP_opt_flags"; | |
12093 | case DW_AT_HP_cold_region_low_pc: | |
12094 | return "DW_AT_HP_cold_region_low_pc"; | |
12095 | case DW_AT_HP_cold_region_high_pc: | |
12096 | return "DW_AT_HP_cold_region_high_pc"; | |
12097 | case DW_AT_HP_all_variables_modifiable: | |
12098 | return "DW_AT_HP_all_variables_modifiable"; | |
12099 | case DW_AT_HP_linkage_name: | |
12100 | return "DW_AT_HP_linkage_name"; | |
12101 | case DW_AT_HP_prof_flags: | |
12102 | return "DW_AT_HP_prof_flags"; | |
12103 | /* GNU extensions. */ | |
c906108c SS |
12104 | case DW_AT_sf_names: |
12105 | return "DW_AT_sf_names"; | |
12106 | case DW_AT_src_info: | |
12107 | return "DW_AT_src_info"; | |
12108 | case DW_AT_mac_info: | |
12109 | return "DW_AT_mac_info"; | |
12110 | case DW_AT_src_coords: | |
12111 | return "DW_AT_src_coords"; | |
12112 | case DW_AT_body_begin: | |
12113 | return "DW_AT_body_begin"; | |
12114 | case DW_AT_body_end: | |
12115 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
12116 | case DW_AT_GNU_vector: |
12117 | return "DW_AT_GNU_vector"; | |
2de00c64 DE |
12118 | case DW_AT_GNU_odr_signature: |
12119 | return "DW_AT_GNU_odr_signature"; | |
b7619582 GF |
12120 | /* VMS extensions. */ |
12121 | case DW_AT_VMS_rtnbeg_pd_address: | |
12122 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
12123 | /* UPC extension. */ | |
12124 | case DW_AT_upc_threads_scaled: | |
12125 | return "DW_AT_upc_threads_scaled"; | |
12126 | /* PGI (STMicroelectronics) extensions. */ | |
12127 | case DW_AT_PGI_lbase: | |
12128 | return "DW_AT_PGI_lbase"; | |
12129 | case DW_AT_PGI_soffset: | |
12130 | return "DW_AT_PGI_soffset"; | |
12131 | case DW_AT_PGI_lstride: | |
12132 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
12133 | default: |
12134 | return "DW_AT_<unknown>"; | |
12135 | } | |
12136 | } | |
12137 | ||
12138 | /* Convert a DWARF value form code into its string name. */ | |
12139 | ||
12140 | static char * | |
aa1ee363 | 12141 | dwarf_form_name (unsigned form) |
c906108c SS |
12142 | { |
12143 | switch (form) | |
12144 | { | |
12145 | case DW_FORM_addr: | |
12146 | return "DW_FORM_addr"; | |
12147 | case DW_FORM_block2: | |
12148 | return "DW_FORM_block2"; | |
12149 | case DW_FORM_block4: | |
12150 | return "DW_FORM_block4"; | |
12151 | case DW_FORM_data2: | |
12152 | return "DW_FORM_data2"; | |
12153 | case DW_FORM_data4: | |
12154 | return "DW_FORM_data4"; | |
12155 | case DW_FORM_data8: | |
12156 | return "DW_FORM_data8"; | |
12157 | case DW_FORM_string: | |
12158 | return "DW_FORM_string"; | |
12159 | case DW_FORM_block: | |
12160 | return "DW_FORM_block"; | |
12161 | case DW_FORM_block1: | |
12162 | return "DW_FORM_block1"; | |
12163 | case DW_FORM_data1: | |
12164 | return "DW_FORM_data1"; | |
12165 | case DW_FORM_flag: | |
12166 | return "DW_FORM_flag"; | |
12167 | case DW_FORM_sdata: | |
12168 | return "DW_FORM_sdata"; | |
12169 | case DW_FORM_strp: | |
12170 | return "DW_FORM_strp"; | |
12171 | case DW_FORM_udata: | |
12172 | return "DW_FORM_udata"; | |
12173 | case DW_FORM_ref_addr: | |
12174 | return "DW_FORM_ref_addr"; | |
12175 | case DW_FORM_ref1: | |
12176 | return "DW_FORM_ref1"; | |
12177 | case DW_FORM_ref2: | |
12178 | return "DW_FORM_ref2"; | |
12179 | case DW_FORM_ref4: | |
12180 | return "DW_FORM_ref4"; | |
12181 | case DW_FORM_ref8: | |
12182 | return "DW_FORM_ref8"; | |
12183 | case DW_FORM_ref_udata: | |
12184 | return "DW_FORM_ref_udata"; | |
12185 | case DW_FORM_indirect: | |
12186 | return "DW_FORM_indirect"; | |
348e048f DE |
12187 | case DW_FORM_sec_offset: |
12188 | return "DW_FORM_sec_offset"; | |
12189 | case DW_FORM_exprloc: | |
12190 | return "DW_FORM_exprloc"; | |
12191 | case DW_FORM_flag_present: | |
12192 | return "DW_FORM_flag_present"; | |
12193 | case DW_FORM_sig8: | |
12194 | return "DW_FORM_sig8"; | |
c906108c SS |
12195 | default: |
12196 | return "DW_FORM_<unknown>"; | |
12197 | } | |
12198 | } | |
12199 | ||
12200 | /* Convert a DWARF stack opcode into its string name. */ | |
12201 | ||
9eae7c52 TT |
12202 | const char * |
12203 | dwarf_stack_op_name (unsigned op, int def) | |
c906108c SS |
12204 | { |
12205 | switch (op) | |
12206 | { | |
12207 | case DW_OP_addr: | |
12208 | return "DW_OP_addr"; | |
12209 | case DW_OP_deref: | |
12210 | return "DW_OP_deref"; | |
12211 | case DW_OP_const1u: | |
12212 | return "DW_OP_const1u"; | |
12213 | case DW_OP_const1s: | |
12214 | return "DW_OP_const1s"; | |
12215 | case DW_OP_const2u: | |
12216 | return "DW_OP_const2u"; | |
12217 | case DW_OP_const2s: | |
12218 | return "DW_OP_const2s"; | |
12219 | case DW_OP_const4u: | |
12220 | return "DW_OP_const4u"; | |
12221 | case DW_OP_const4s: | |
12222 | return "DW_OP_const4s"; | |
12223 | case DW_OP_const8u: | |
12224 | return "DW_OP_const8u"; | |
12225 | case DW_OP_const8s: | |
12226 | return "DW_OP_const8s"; | |
12227 | case DW_OP_constu: | |
12228 | return "DW_OP_constu"; | |
12229 | case DW_OP_consts: | |
12230 | return "DW_OP_consts"; | |
12231 | case DW_OP_dup: | |
12232 | return "DW_OP_dup"; | |
12233 | case DW_OP_drop: | |
12234 | return "DW_OP_drop"; | |
12235 | case DW_OP_over: | |
12236 | return "DW_OP_over"; | |
12237 | case DW_OP_pick: | |
12238 | return "DW_OP_pick"; | |
12239 | case DW_OP_swap: | |
12240 | return "DW_OP_swap"; | |
12241 | case DW_OP_rot: | |
12242 | return "DW_OP_rot"; | |
12243 | case DW_OP_xderef: | |
12244 | return "DW_OP_xderef"; | |
12245 | case DW_OP_abs: | |
12246 | return "DW_OP_abs"; | |
12247 | case DW_OP_and: | |
12248 | return "DW_OP_and"; | |
12249 | case DW_OP_div: | |
12250 | return "DW_OP_div"; | |
12251 | case DW_OP_minus: | |
12252 | return "DW_OP_minus"; | |
12253 | case DW_OP_mod: | |
12254 | return "DW_OP_mod"; | |
12255 | case DW_OP_mul: | |
12256 | return "DW_OP_mul"; | |
12257 | case DW_OP_neg: | |
12258 | return "DW_OP_neg"; | |
12259 | case DW_OP_not: | |
12260 | return "DW_OP_not"; | |
12261 | case DW_OP_or: | |
12262 | return "DW_OP_or"; | |
12263 | case DW_OP_plus: | |
12264 | return "DW_OP_plus"; | |
12265 | case DW_OP_plus_uconst: | |
12266 | return "DW_OP_plus_uconst"; | |
12267 | case DW_OP_shl: | |
12268 | return "DW_OP_shl"; | |
12269 | case DW_OP_shr: | |
12270 | return "DW_OP_shr"; | |
12271 | case DW_OP_shra: | |
12272 | return "DW_OP_shra"; | |
12273 | case DW_OP_xor: | |
12274 | return "DW_OP_xor"; | |
12275 | case DW_OP_bra: | |
12276 | return "DW_OP_bra"; | |
12277 | case DW_OP_eq: | |
12278 | return "DW_OP_eq"; | |
12279 | case DW_OP_ge: | |
12280 | return "DW_OP_ge"; | |
12281 | case DW_OP_gt: | |
12282 | return "DW_OP_gt"; | |
12283 | case DW_OP_le: | |
12284 | return "DW_OP_le"; | |
12285 | case DW_OP_lt: | |
12286 | return "DW_OP_lt"; | |
12287 | case DW_OP_ne: | |
12288 | return "DW_OP_ne"; | |
12289 | case DW_OP_skip: | |
12290 | return "DW_OP_skip"; | |
12291 | case DW_OP_lit0: | |
12292 | return "DW_OP_lit0"; | |
12293 | case DW_OP_lit1: | |
12294 | return "DW_OP_lit1"; | |
12295 | case DW_OP_lit2: | |
12296 | return "DW_OP_lit2"; | |
12297 | case DW_OP_lit3: | |
12298 | return "DW_OP_lit3"; | |
12299 | case DW_OP_lit4: | |
12300 | return "DW_OP_lit4"; | |
12301 | case DW_OP_lit5: | |
12302 | return "DW_OP_lit5"; | |
12303 | case DW_OP_lit6: | |
12304 | return "DW_OP_lit6"; | |
12305 | case DW_OP_lit7: | |
12306 | return "DW_OP_lit7"; | |
12307 | case DW_OP_lit8: | |
12308 | return "DW_OP_lit8"; | |
12309 | case DW_OP_lit9: | |
12310 | return "DW_OP_lit9"; | |
12311 | case DW_OP_lit10: | |
12312 | return "DW_OP_lit10"; | |
12313 | case DW_OP_lit11: | |
12314 | return "DW_OP_lit11"; | |
12315 | case DW_OP_lit12: | |
12316 | return "DW_OP_lit12"; | |
12317 | case DW_OP_lit13: | |
12318 | return "DW_OP_lit13"; | |
12319 | case DW_OP_lit14: | |
12320 | return "DW_OP_lit14"; | |
12321 | case DW_OP_lit15: | |
12322 | return "DW_OP_lit15"; | |
12323 | case DW_OP_lit16: | |
12324 | return "DW_OP_lit16"; | |
12325 | case DW_OP_lit17: | |
12326 | return "DW_OP_lit17"; | |
12327 | case DW_OP_lit18: | |
12328 | return "DW_OP_lit18"; | |
12329 | case DW_OP_lit19: | |
12330 | return "DW_OP_lit19"; | |
12331 | case DW_OP_lit20: | |
12332 | return "DW_OP_lit20"; | |
12333 | case DW_OP_lit21: | |
12334 | return "DW_OP_lit21"; | |
12335 | case DW_OP_lit22: | |
12336 | return "DW_OP_lit22"; | |
12337 | case DW_OP_lit23: | |
12338 | return "DW_OP_lit23"; | |
12339 | case DW_OP_lit24: | |
12340 | return "DW_OP_lit24"; | |
12341 | case DW_OP_lit25: | |
12342 | return "DW_OP_lit25"; | |
12343 | case DW_OP_lit26: | |
12344 | return "DW_OP_lit26"; | |
12345 | case DW_OP_lit27: | |
12346 | return "DW_OP_lit27"; | |
12347 | case DW_OP_lit28: | |
12348 | return "DW_OP_lit28"; | |
12349 | case DW_OP_lit29: | |
12350 | return "DW_OP_lit29"; | |
12351 | case DW_OP_lit30: | |
12352 | return "DW_OP_lit30"; | |
12353 | case DW_OP_lit31: | |
12354 | return "DW_OP_lit31"; | |
12355 | case DW_OP_reg0: | |
12356 | return "DW_OP_reg0"; | |
12357 | case DW_OP_reg1: | |
12358 | return "DW_OP_reg1"; | |
12359 | case DW_OP_reg2: | |
12360 | return "DW_OP_reg2"; | |
12361 | case DW_OP_reg3: | |
12362 | return "DW_OP_reg3"; | |
12363 | case DW_OP_reg4: | |
12364 | return "DW_OP_reg4"; | |
12365 | case DW_OP_reg5: | |
12366 | return "DW_OP_reg5"; | |
12367 | case DW_OP_reg6: | |
12368 | return "DW_OP_reg6"; | |
12369 | case DW_OP_reg7: | |
12370 | return "DW_OP_reg7"; | |
12371 | case DW_OP_reg8: | |
12372 | return "DW_OP_reg8"; | |
12373 | case DW_OP_reg9: | |
12374 | return "DW_OP_reg9"; | |
12375 | case DW_OP_reg10: | |
12376 | return "DW_OP_reg10"; | |
12377 | case DW_OP_reg11: | |
12378 | return "DW_OP_reg11"; | |
12379 | case DW_OP_reg12: | |
12380 | return "DW_OP_reg12"; | |
12381 | case DW_OP_reg13: | |
12382 | return "DW_OP_reg13"; | |
12383 | case DW_OP_reg14: | |
12384 | return "DW_OP_reg14"; | |
12385 | case DW_OP_reg15: | |
12386 | return "DW_OP_reg15"; | |
12387 | case DW_OP_reg16: | |
12388 | return "DW_OP_reg16"; | |
12389 | case DW_OP_reg17: | |
12390 | return "DW_OP_reg17"; | |
12391 | case DW_OP_reg18: | |
12392 | return "DW_OP_reg18"; | |
12393 | case DW_OP_reg19: | |
12394 | return "DW_OP_reg19"; | |
12395 | case DW_OP_reg20: | |
12396 | return "DW_OP_reg20"; | |
12397 | case DW_OP_reg21: | |
12398 | return "DW_OP_reg21"; | |
12399 | case DW_OP_reg22: | |
12400 | return "DW_OP_reg22"; | |
12401 | case DW_OP_reg23: | |
12402 | return "DW_OP_reg23"; | |
12403 | case DW_OP_reg24: | |
12404 | return "DW_OP_reg24"; | |
12405 | case DW_OP_reg25: | |
12406 | return "DW_OP_reg25"; | |
12407 | case DW_OP_reg26: | |
12408 | return "DW_OP_reg26"; | |
12409 | case DW_OP_reg27: | |
12410 | return "DW_OP_reg27"; | |
12411 | case DW_OP_reg28: | |
12412 | return "DW_OP_reg28"; | |
12413 | case DW_OP_reg29: | |
12414 | return "DW_OP_reg29"; | |
12415 | case DW_OP_reg30: | |
12416 | return "DW_OP_reg30"; | |
12417 | case DW_OP_reg31: | |
12418 | return "DW_OP_reg31"; | |
12419 | case DW_OP_breg0: | |
12420 | return "DW_OP_breg0"; | |
12421 | case DW_OP_breg1: | |
12422 | return "DW_OP_breg1"; | |
12423 | case DW_OP_breg2: | |
12424 | return "DW_OP_breg2"; | |
12425 | case DW_OP_breg3: | |
12426 | return "DW_OP_breg3"; | |
12427 | case DW_OP_breg4: | |
12428 | return "DW_OP_breg4"; | |
12429 | case DW_OP_breg5: | |
12430 | return "DW_OP_breg5"; | |
12431 | case DW_OP_breg6: | |
12432 | return "DW_OP_breg6"; | |
12433 | case DW_OP_breg7: | |
12434 | return "DW_OP_breg7"; | |
12435 | case DW_OP_breg8: | |
12436 | return "DW_OP_breg8"; | |
12437 | case DW_OP_breg9: | |
12438 | return "DW_OP_breg9"; | |
12439 | case DW_OP_breg10: | |
12440 | return "DW_OP_breg10"; | |
12441 | case DW_OP_breg11: | |
12442 | return "DW_OP_breg11"; | |
12443 | case DW_OP_breg12: | |
12444 | return "DW_OP_breg12"; | |
12445 | case DW_OP_breg13: | |
12446 | return "DW_OP_breg13"; | |
12447 | case DW_OP_breg14: | |
12448 | return "DW_OP_breg14"; | |
12449 | case DW_OP_breg15: | |
12450 | return "DW_OP_breg15"; | |
12451 | case DW_OP_breg16: | |
12452 | return "DW_OP_breg16"; | |
12453 | case DW_OP_breg17: | |
12454 | return "DW_OP_breg17"; | |
12455 | case DW_OP_breg18: | |
12456 | return "DW_OP_breg18"; | |
12457 | case DW_OP_breg19: | |
12458 | return "DW_OP_breg19"; | |
12459 | case DW_OP_breg20: | |
12460 | return "DW_OP_breg20"; | |
12461 | case DW_OP_breg21: | |
12462 | return "DW_OP_breg21"; | |
12463 | case DW_OP_breg22: | |
12464 | return "DW_OP_breg22"; | |
12465 | case DW_OP_breg23: | |
12466 | return "DW_OP_breg23"; | |
12467 | case DW_OP_breg24: | |
12468 | return "DW_OP_breg24"; | |
12469 | case DW_OP_breg25: | |
12470 | return "DW_OP_breg25"; | |
12471 | case DW_OP_breg26: | |
12472 | return "DW_OP_breg26"; | |
12473 | case DW_OP_breg27: | |
12474 | return "DW_OP_breg27"; | |
12475 | case DW_OP_breg28: | |
12476 | return "DW_OP_breg28"; | |
12477 | case DW_OP_breg29: | |
12478 | return "DW_OP_breg29"; | |
12479 | case DW_OP_breg30: | |
12480 | return "DW_OP_breg30"; | |
12481 | case DW_OP_breg31: | |
12482 | return "DW_OP_breg31"; | |
12483 | case DW_OP_regx: | |
12484 | return "DW_OP_regx"; | |
12485 | case DW_OP_fbreg: | |
12486 | return "DW_OP_fbreg"; | |
12487 | case DW_OP_bregx: | |
12488 | return "DW_OP_bregx"; | |
12489 | case DW_OP_piece: | |
12490 | return "DW_OP_piece"; | |
12491 | case DW_OP_deref_size: | |
12492 | return "DW_OP_deref_size"; | |
12493 | case DW_OP_xderef_size: | |
12494 | return "DW_OP_xderef_size"; | |
12495 | case DW_OP_nop: | |
12496 | return "DW_OP_nop"; | |
b7619582 | 12497 | /* DWARF 3 extensions. */ |
ed348acc EZ |
12498 | case DW_OP_push_object_address: |
12499 | return "DW_OP_push_object_address"; | |
12500 | case DW_OP_call2: | |
12501 | return "DW_OP_call2"; | |
12502 | case DW_OP_call4: | |
12503 | return "DW_OP_call4"; | |
12504 | case DW_OP_call_ref: | |
12505 | return "DW_OP_call_ref"; | |
b7619582 GF |
12506 | case DW_OP_form_tls_address: |
12507 | return "DW_OP_form_tls_address"; | |
12508 | case DW_OP_call_frame_cfa: | |
12509 | return "DW_OP_call_frame_cfa"; | |
12510 | case DW_OP_bit_piece: | |
12511 | return "DW_OP_bit_piece"; | |
9eae7c52 TT |
12512 | /* DWARF 4 extensions. */ |
12513 | case DW_OP_implicit_value: | |
12514 | return "DW_OP_implicit_value"; | |
12515 | case DW_OP_stack_value: | |
12516 | return "DW_OP_stack_value"; | |
12517 | /* GNU extensions. */ | |
ed348acc EZ |
12518 | case DW_OP_GNU_push_tls_address: |
12519 | return "DW_OP_GNU_push_tls_address"; | |
42be36b3 CT |
12520 | case DW_OP_GNU_uninit: |
12521 | return "DW_OP_GNU_uninit"; | |
c906108c | 12522 | default: |
9eae7c52 | 12523 | return def ? "OP_<unknown>" : NULL; |
c906108c SS |
12524 | } |
12525 | } | |
12526 | ||
12527 | static char * | |
fba45db2 | 12528 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
12529 | { |
12530 | if (mybool) | |
12531 | return "TRUE"; | |
12532 | else | |
12533 | return "FALSE"; | |
12534 | } | |
12535 | ||
12536 | /* Convert a DWARF type code into its string name. */ | |
12537 | ||
12538 | static char * | |
aa1ee363 | 12539 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
12540 | { |
12541 | switch (enc) | |
12542 | { | |
b7619582 GF |
12543 | case DW_ATE_void: |
12544 | return "DW_ATE_void"; | |
c906108c SS |
12545 | case DW_ATE_address: |
12546 | return "DW_ATE_address"; | |
12547 | case DW_ATE_boolean: | |
12548 | return "DW_ATE_boolean"; | |
12549 | case DW_ATE_complex_float: | |
12550 | return "DW_ATE_complex_float"; | |
12551 | case DW_ATE_float: | |
12552 | return "DW_ATE_float"; | |
12553 | case DW_ATE_signed: | |
12554 | return "DW_ATE_signed"; | |
12555 | case DW_ATE_signed_char: | |
12556 | return "DW_ATE_signed_char"; | |
12557 | case DW_ATE_unsigned: | |
12558 | return "DW_ATE_unsigned"; | |
12559 | case DW_ATE_unsigned_char: | |
12560 | return "DW_ATE_unsigned_char"; | |
b7619582 | 12561 | /* DWARF 3. */ |
d9fa45fe DC |
12562 | case DW_ATE_imaginary_float: |
12563 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
12564 | case DW_ATE_packed_decimal: |
12565 | return "DW_ATE_packed_decimal"; | |
12566 | case DW_ATE_numeric_string: | |
12567 | return "DW_ATE_numeric_string"; | |
12568 | case DW_ATE_edited: | |
12569 | return "DW_ATE_edited"; | |
12570 | case DW_ATE_signed_fixed: | |
12571 | return "DW_ATE_signed_fixed"; | |
12572 | case DW_ATE_unsigned_fixed: | |
12573 | return "DW_ATE_unsigned_fixed"; | |
12574 | case DW_ATE_decimal_float: | |
12575 | return "DW_ATE_decimal_float"; | |
75079b2b TT |
12576 | /* DWARF 4. */ |
12577 | case DW_ATE_UTF: | |
12578 | return "DW_ATE_UTF"; | |
b7619582 GF |
12579 | /* HP extensions. */ |
12580 | case DW_ATE_HP_float80: | |
12581 | return "DW_ATE_HP_float80"; | |
12582 | case DW_ATE_HP_complex_float80: | |
12583 | return "DW_ATE_HP_complex_float80"; | |
12584 | case DW_ATE_HP_float128: | |
12585 | return "DW_ATE_HP_float128"; | |
12586 | case DW_ATE_HP_complex_float128: | |
12587 | return "DW_ATE_HP_complex_float128"; | |
12588 | case DW_ATE_HP_floathpintel: | |
12589 | return "DW_ATE_HP_floathpintel"; | |
12590 | case DW_ATE_HP_imaginary_float80: | |
12591 | return "DW_ATE_HP_imaginary_float80"; | |
12592 | case DW_ATE_HP_imaginary_float128: | |
12593 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
12594 | default: |
12595 | return "DW_ATE_<unknown>"; | |
12596 | } | |
12597 | } | |
12598 | ||
12599 | /* Convert a DWARF call frame info operation to its string name. */ | |
12600 | ||
12601 | #if 0 | |
12602 | static char * | |
aa1ee363 | 12603 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
12604 | { |
12605 | switch (cfi_opc) | |
12606 | { | |
12607 | case DW_CFA_advance_loc: | |
12608 | return "DW_CFA_advance_loc"; | |
12609 | case DW_CFA_offset: | |
12610 | return "DW_CFA_offset"; | |
12611 | case DW_CFA_restore: | |
12612 | return "DW_CFA_restore"; | |
12613 | case DW_CFA_nop: | |
12614 | return "DW_CFA_nop"; | |
12615 | case DW_CFA_set_loc: | |
12616 | return "DW_CFA_set_loc"; | |
12617 | case DW_CFA_advance_loc1: | |
12618 | return "DW_CFA_advance_loc1"; | |
12619 | case DW_CFA_advance_loc2: | |
12620 | return "DW_CFA_advance_loc2"; | |
12621 | case DW_CFA_advance_loc4: | |
12622 | return "DW_CFA_advance_loc4"; | |
12623 | case DW_CFA_offset_extended: | |
12624 | return "DW_CFA_offset_extended"; | |
12625 | case DW_CFA_restore_extended: | |
12626 | return "DW_CFA_restore_extended"; | |
12627 | case DW_CFA_undefined: | |
12628 | return "DW_CFA_undefined"; | |
12629 | case DW_CFA_same_value: | |
12630 | return "DW_CFA_same_value"; | |
12631 | case DW_CFA_register: | |
12632 | return "DW_CFA_register"; | |
12633 | case DW_CFA_remember_state: | |
12634 | return "DW_CFA_remember_state"; | |
12635 | case DW_CFA_restore_state: | |
12636 | return "DW_CFA_restore_state"; | |
12637 | case DW_CFA_def_cfa: | |
12638 | return "DW_CFA_def_cfa"; | |
12639 | case DW_CFA_def_cfa_register: | |
12640 | return "DW_CFA_def_cfa_register"; | |
12641 | case DW_CFA_def_cfa_offset: | |
12642 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 12643 | /* DWARF 3. */ |
985cb1a3 JM |
12644 | case DW_CFA_def_cfa_expression: |
12645 | return "DW_CFA_def_cfa_expression"; | |
12646 | case DW_CFA_expression: | |
12647 | return "DW_CFA_expression"; | |
12648 | case DW_CFA_offset_extended_sf: | |
12649 | return "DW_CFA_offset_extended_sf"; | |
12650 | case DW_CFA_def_cfa_sf: | |
12651 | return "DW_CFA_def_cfa_sf"; | |
12652 | case DW_CFA_def_cfa_offset_sf: | |
12653 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
12654 | case DW_CFA_val_offset: |
12655 | return "DW_CFA_val_offset"; | |
12656 | case DW_CFA_val_offset_sf: | |
12657 | return "DW_CFA_val_offset_sf"; | |
12658 | case DW_CFA_val_expression: | |
12659 | return "DW_CFA_val_expression"; | |
12660 | /* SGI/MIPS specific. */ | |
c906108c SS |
12661 | case DW_CFA_MIPS_advance_loc8: |
12662 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 12663 | /* GNU extensions. */ |
985cb1a3 JM |
12664 | case DW_CFA_GNU_window_save: |
12665 | return "DW_CFA_GNU_window_save"; | |
12666 | case DW_CFA_GNU_args_size: | |
12667 | return "DW_CFA_GNU_args_size"; | |
12668 | case DW_CFA_GNU_negative_offset_extended: | |
12669 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
12670 | default: |
12671 | return "DW_CFA_<unknown>"; | |
12672 | } | |
12673 | } | |
12674 | #endif | |
12675 | ||
f9aca02d | 12676 | static void |
d97bc12b | 12677 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
12678 | { |
12679 | unsigned int i; | |
12680 | ||
d97bc12b DE |
12681 | print_spaces (indent, f); |
12682 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
c906108c | 12683 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
d97bc12b DE |
12684 | |
12685 | if (die->parent != NULL) | |
12686 | { | |
12687 | print_spaces (indent, f); | |
12688 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
12689 | die->parent->offset); | |
12690 | } | |
12691 | ||
12692 | print_spaces (indent, f); | |
12693 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 12694 | dwarf_bool_name (die->child != NULL)); |
c906108c | 12695 | |
d97bc12b DE |
12696 | print_spaces (indent, f); |
12697 | fprintf_unfiltered (f, " attributes:\n"); | |
12698 | ||
c906108c SS |
12699 | for (i = 0; i < die->num_attrs; ++i) |
12700 | { | |
d97bc12b DE |
12701 | print_spaces (indent, f); |
12702 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
12703 | dwarf_attr_name (die->attrs[i].name), |
12704 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 12705 | |
c906108c SS |
12706 | switch (die->attrs[i].form) |
12707 | { | |
12708 | case DW_FORM_ref_addr: | |
12709 | case DW_FORM_addr: | |
d97bc12b | 12710 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 12711 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
12712 | break; |
12713 | case DW_FORM_block2: | |
12714 | case DW_FORM_block4: | |
12715 | case DW_FORM_block: | |
12716 | case DW_FORM_block1: | |
d97bc12b | 12717 | fprintf_unfiltered (f, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c | 12718 | break; |
2dc7f7b3 TT |
12719 | case DW_FORM_exprloc: |
12720 | fprintf_unfiltered (f, "expression: size %u", | |
12721 | DW_BLOCK (&die->attrs[i])->size); | |
12722 | break; | |
10b3939b DJ |
12723 | case DW_FORM_ref1: |
12724 | case DW_FORM_ref2: | |
12725 | case DW_FORM_ref4: | |
d97bc12b | 12726 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
10b3939b DJ |
12727 | (long) (DW_ADDR (&die->attrs[i]))); |
12728 | break; | |
c906108c SS |
12729 | case DW_FORM_data1: |
12730 | case DW_FORM_data2: | |
12731 | case DW_FORM_data4: | |
ce5d95e1 | 12732 | case DW_FORM_data8: |
c906108c SS |
12733 | case DW_FORM_udata: |
12734 | case DW_FORM_sdata: | |
43bbcdc2 PH |
12735 | fprintf_unfiltered (f, "constant: %s", |
12736 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 12737 | break; |
2dc7f7b3 TT |
12738 | case DW_FORM_sec_offset: |
12739 | fprintf_unfiltered (f, "section offset: %s", | |
12740 | pulongest (DW_UNSND (&die->attrs[i]))); | |
12741 | break; | |
348e048f DE |
12742 | case DW_FORM_sig8: |
12743 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) | |
12744 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
12745 | DW_SIGNATURED_TYPE (&die->attrs[i])->offset); | |
12746 | else | |
12747 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
12748 | break; | |
c906108c | 12749 | case DW_FORM_string: |
4bdf3d34 | 12750 | case DW_FORM_strp: |
8285870a | 12751 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 12752 | DW_STRING (&die->attrs[i]) |
8285870a JK |
12753 | ? DW_STRING (&die->attrs[i]) : "", |
12754 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
12755 | break; |
12756 | case DW_FORM_flag: | |
12757 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 12758 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 12759 | else |
d97bc12b | 12760 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 12761 | break; |
2dc7f7b3 TT |
12762 | case DW_FORM_flag_present: |
12763 | fprintf_unfiltered (f, "flag: TRUE"); | |
12764 | break; | |
a8329558 KW |
12765 | case DW_FORM_indirect: |
12766 | /* the reader will have reduced the indirect form to | |
12767 | the "base form" so this form should not occur */ | |
d97bc12b | 12768 | fprintf_unfiltered (f, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 12769 | break; |
c906108c | 12770 | default: |
d97bc12b | 12771 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 12772 | die->attrs[i].form); |
d97bc12b | 12773 | break; |
c906108c | 12774 | } |
d97bc12b | 12775 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
12776 | } |
12777 | } | |
12778 | ||
f9aca02d | 12779 | static void |
d97bc12b | 12780 | dump_die_for_error (struct die_info *die) |
c906108c | 12781 | { |
d97bc12b DE |
12782 | dump_die_shallow (gdb_stderr, 0, die); |
12783 | } | |
12784 | ||
12785 | static void | |
12786 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
12787 | { | |
12788 | int indent = level * 4; | |
12789 | ||
12790 | gdb_assert (die != NULL); | |
12791 | ||
12792 | if (level >= max_level) | |
12793 | return; | |
12794 | ||
12795 | dump_die_shallow (f, indent, die); | |
12796 | ||
12797 | if (die->child != NULL) | |
c906108c | 12798 | { |
d97bc12b DE |
12799 | print_spaces (indent, f); |
12800 | fprintf_unfiltered (f, " Children:"); | |
12801 | if (level + 1 < max_level) | |
12802 | { | |
12803 | fprintf_unfiltered (f, "\n"); | |
12804 | dump_die_1 (f, level + 1, max_level, die->child); | |
12805 | } | |
12806 | else | |
12807 | { | |
12808 | fprintf_unfiltered (f, " [not printed, max nesting level reached]\n"); | |
12809 | } | |
12810 | } | |
12811 | ||
12812 | if (die->sibling != NULL && level > 0) | |
12813 | { | |
12814 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
12815 | } |
12816 | } | |
12817 | ||
d97bc12b DE |
12818 | /* This is called from the pdie macro in gdbinit.in. |
12819 | It's not static so gcc will keep a copy callable from gdb. */ | |
12820 | ||
12821 | void | |
12822 | dump_die (struct die_info *die, int max_level) | |
12823 | { | |
12824 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
12825 | } | |
12826 | ||
f9aca02d | 12827 | static void |
51545339 | 12828 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12829 | { |
51545339 | 12830 | void **slot; |
c906108c | 12831 | |
51545339 DJ |
12832 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset, INSERT); |
12833 | ||
12834 | *slot = die; | |
c906108c SS |
12835 | } |
12836 | ||
93311388 DE |
12837 | static int |
12838 | is_ref_attr (struct attribute *attr) | |
c906108c | 12839 | { |
c906108c SS |
12840 | switch (attr->form) |
12841 | { | |
12842 | case DW_FORM_ref_addr: | |
c906108c SS |
12843 | case DW_FORM_ref1: |
12844 | case DW_FORM_ref2: | |
12845 | case DW_FORM_ref4: | |
613e1657 | 12846 | case DW_FORM_ref8: |
c906108c | 12847 | case DW_FORM_ref_udata: |
93311388 | 12848 | return 1; |
c906108c | 12849 | default: |
93311388 | 12850 | return 0; |
c906108c | 12851 | } |
93311388 DE |
12852 | } |
12853 | ||
12854 | static unsigned int | |
12855 | dwarf2_get_ref_die_offset (struct attribute *attr) | |
12856 | { | |
12857 | if (is_ref_attr (attr)) | |
12858 | return DW_ADDR (attr); | |
12859 | ||
12860 | complaint (&symfile_complaints, | |
12861 | _("unsupported die ref attribute form: '%s'"), | |
12862 | dwarf_form_name (attr->form)); | |
12863 | return 0; | |
c906108c SS |
12864 | } |
12865 | ||
43bbcdc2 PH |
12866 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
12867 | * the value held by the attribute is not constant. */ | |
a02abb62 | 12868 | |
43bbcdc2 | 12869 | static LONGEST |
a02abb62 JB |
12870 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
12871 | { | |
12872 | if (attr->form == DW_FORM_sdata) | |
12873 | return DW_SND (attr); | |
12874 | else if (attr->form == DW_FORM_udata | |
12875 | || attr->form == DW_FORM_data1 | |
12876 | || attr->form == DW_FORM_data2 | |
12877 | || attr->form == DW_FORM_data4 | |
12878 | || attr->form == DW_FORM_data8) | |
12879 | return DW_UNSND (attr); | |
12880 | else | |
12881 | { | |
e2e0b3e5 | 12882 | complaint (&symfile_complaints, _("Attribute value is not a constant (%s)"), |
a02abb62 JB |
12883 | dwarf_form_name (attr->form)); |
12884 | return default_value; | |
12885 | } | |
12886 | } | |
12887 | ||
03dd20cc | 12888 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
348e048f DE |
12889 | unit and add it to our queue. |
12890 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
12891 | meaning either PER_CU is already queued or it is already loaded. */ | |
03dd20cc | 12892 | |
348e048f | 12893 | static int |
03dd20cc DJ |
12894 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, |
12895 | struct dwarf2_per_cu_data *per_cu) | |
12896 | { | |
98bfdba5 PA |
12897 | /* We may arrive here during partial symbol reading, if we need full |
12898 | DIEs to process an unusual case (e.g. template arguments). Do | |
12899 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
12900 | if (dwarf2_per_objfile->reading_partial_symbols) | |
12901 | { | |
12902 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
12903 | return 1; | |
12904 | return 0; | |
12905 | } | |
12906 | ||
03dd20cc DJ |
12907 | /* Mark the dependence relation so that we don't flush PER_CU |
12908 | too early. */ | |
12909 | dwarf2_add_dependence (this_cu, per_cu); | |
12910 | ||
12911 | /* If it's already on the queue, we have nothing to do. */ | |
12912 | if (per_cu->queued) | |
348e048f | 12913 | return 0; |
03dd20cc DJ |
12914 | |
12915 | /* If the compilation unit is already loaded, just mark it as | |
12916 | used. */ | |
12917 | if (per_cu->cu != NULL) | |
12918 | { | |
12919 | per_cu->cu->last_used = 0; | |
348e048f | 12920 | return 0; |
03dd20cc DJ |
12921 | } |
12922 | ||
12923 | /* Add it to the queue. */ | |
12924 | queue_comp_unit (per_cu, this_cu->objfile); | |
348e048f DE |
12925 | |
12926 | return 1; | |
12927 | } | |
12928 | ||
12929 | /* Follow reference or signature attribute ATTR of SRC_DIE. | |
12930 | On entry *REF_CU is the CU of SRC_DIE. | |
12931 | On exit *REF_CU is the CU of the result. */ | |
12932 | ||
12933 | static struct die_info * | |
12934 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
12935 | struct dwarf2_cu **ref_cu) | |
12936 | { | |
12937 | struct die_info *die; | |
12938 | ||
12939 | if (is_ref_attr (attr)) | |
12940 | die = follow_die_ref (src_die, attr, ref_cu); | |
12941 | else if (attr->form == DW_FORM_sig8) | |
12942 | die = follow_die_sig (src_die, attr, ref_cu); | |
12943 | else | |
12944 | { | |
12945 | dump_die_for_error (src_die); | |
12946 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
12947 | (*ref_cu)->objfile->name); | |
12948 | } | |
12949 | ||
12950 | return die; | |
03dd20cc DJ |
12951 | } |
12952 | ||
5c631832 | 12953 | /* Follow reference OFFSET. |
673bfd45 DE |
12954 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
12955 | On exit *REF_CU is the CU of the result. | |
12956 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 12957 | |
f9aca02d | 12958 | static struct die_info * |
5c631832 | 12959 | follow_die_offset (unsigned int offset, struct dwarf2_cu **ref_cu) |
c906108c | 12960 | { |
10b3939b | 12961 | struct die_info temp_die; |
f2f0e013 | 12962 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 12963 | |
348e048f DE |
12964 | gdb_assert (cu->per_cu != NULL); |
12965 | ||
98bfdba5 PA |
12966 | target_cu = cu; |
12967 | ||
348e048f DE |
12968 | if (cu->per_cu->from_debug_types) |
12969 | { | |
12970 | /* .debug_types CUs cannot reference anything outside their CU. | |
12971 | If they need to, they have to reference a signatured type via | |
12972 | DW_FORM_sig8. */ | |
12973 | if (! offset_in_cu_p (&cu->header, offset)) | |
5c631832 | 12974 | return NULL; |
348e048f DE |
12975 | } |
12976 | else if (! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
12977 | { |
12978 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 12979 | |
45452591 | 12980 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
12981 | |
12982 | /* If necessary, add it to the queue and load its DIEs. */ | |
348e048f DE |
12983 | if (maybe_queue_comp_unit (cu, per_cu)) |
12984 | load_full_comp_unit (per_cu, cu->objfile); | |
03dd20cc | 12985 | |
10b3939b DJ |
12986 | target_cu = per_cu->cu; |
12987 | } | |
98bfdba5 PA |
12988 | else if (cu->dies == NULL) |
12989 | { | |
12990 | /* We're loading full DIEs during partial symbol reading. */ | |
12991 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
12992 | load_full_comp_unit (cu->per_cu, cu->objfile); | |
12993 | } | |
c906108c | 12994 | |
f2f0e013 | 12995 | *ref_cu = target_cu; |
51545339 | 12996 | temp_die.offset = offset; |
5c631832 JK |
12997 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset); |
12998 | } | |
10b3939b | 12999 | |
5c631832 JK |
13000 | /* Follow reference attribute ATTR of SRC_DIE. |
13001 | On entry *REF_CU is the CU of SRC_DIE. | |
13002 | On exit *REF_CU is the CU of the result. */ | |
13003 | ||
13004 | static struct die_info * | |
13005 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
13006 | struct dwarf2_cu **ref_cu) | |
13007 | { | |
13008 | unsigned int offset = dwarf2_get_ref_die_offset (attr); | |
13009 | struct dwarf2_cu *cu = *ref_cu; | |
13010 | struct die_info *die; | |
13011 | ||
13012 | die = follow_die_offset (offset, ref_cu); | |
13013 | if (!die) | |
13014 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
13015 | "at 0x%x [in module %s]"), | |
13016 | offset, src_die->offset, cu->objfile->name); | |
348e048f | 13017 | |
5c631832 JK |
13018 | return die; |
13019 | } | |
13020 | ||
13021 | /* Return DWARF block and its CU referenced by OFFSET at PER_CU. Returned | |
13022 | value is intended for DW_OP_call*. */ | |
13023 | ||
13024 | struct dwarf2_locexpr_baton | |
13025 | dwarf2_fetch_die_location_block (unsigned int offset, | |
13026 | struct dwarf2_per_cu_data *per_cu) | |
13027 | { | |
13028 | struct dwarf2_cu *cu = per_cu->cu; | |
13029 | struct die_info *die; | |
13030 | struct attribute *attr; | |
13031 | struct dwarf2_locexpr_baton retval; | |
13032 | ||
13033 | die = follow_die_offset (offset, &cu); | |
13034 | if (!die) | |
13035 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
13036 | offset, per_cu->cu->objfile->name); | |
13037 | ||
13038 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
13039 | if (!attr) | |
13040 | { | |
13041 | /* DWARF: "If there is no such attribute, then there is no effect.". */ | |
13042 | ||
13043 | retval.data = NULL; | |
13044 | retval.size = 0; | |
13045 | } | |
13046 | else | |
13047 | { | |
13048 | if (!attr_form_is_block (attr)) | |
13049 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
13050 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
13051 | offset, per_cu->cu->objfile->name); | |
13052 | ||
13053 | retval.data = DW_BLOCK (attr)->data; | |
13054 | retval.size = DW_BLOCK (attr)->size; | |
13055 | } | |
13056 | retval.per_cu = cu->per_cu; | |
13057 | return retval; | |
348e048f DE |
13058 | } |
13059 | ||
13060 | /* Follow the signature attribute ATTR in SRC_DIE. | |
13061 | On entry *REF_CU is the CU of SRC_DIE. | |
13062 | On exit *REF_CU is the CU of the result. */ | |
13063 | ||
13064 | static struct die_info * | |
13065 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
13066 | struct dwarf2_cu **ref_cu) | |
13067 | { | |
13068 | struct objfile *objfile = (*ref_cu)->objfile; | |
13069 | struct die_info temp_die; | |
13070 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
13071 | struct dwarf2_cu *sig_cu; | |
13072 | struct die_info *die; | |
13073 | ||
13074 | /* sig_type will be NULL if the signatured type is missing from | |
13075 | the debug info. */ | |
13076 | if (sig_type == NULL) | |
13077 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
13078 | "at 0x%x [in module %s]"), | |
13079 | src_die->offset, objfile->name); | |
13080 | ||
13081 | /* If necessary, add it to the queue and load its DIEs. */ | |
13082 | ||
13083 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu)) | |
13084 | read_signatured_type (objfile, sig_type); | |
13085 | ||
13086 | gdb_assert (sig_type->per_cu.cu != NULL); | |
13087 | ||
13088 | sig_cu = sig_type->per_cu.cu; | |
13089 | temp_die.offset = sig_cu->header.offset + sig_type->type_offset; | |
13090 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, temp_die.offset); | |
13091 | if (die) | |
13092 | { | |
13093 | *ref_cu = sig_cu; | |
13094 | return die; | |
13095 | } | |
13096 | ||
13097 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced from DIE " | |
13098 | "at 0x%x [in module %s]"), | |
13099 | sig_type->type_offset, src_die->offset, objfile->name); | |
13100 | } | |
13101 | ||
13102 | /* Given an offset of a signatured type, return its signatured_type. */ | |
13103 | ||
13104 | static struct signatured_type * | |
13105 | lookup_signatured_type_at_offset (struct objfile *objfile, unsigned int offset) | |
13106 | { | |
13107 | gdb_byte *info_ptr = dwarf2_per_objfile->types.buffer + offset; | |
13108 | unsigned int length, initial_length_size; | |
13109 | unsigned int sig_offset; | |
13110 | struct signatured_type find_entry, *type_sig; | |
13111 | ||
13112 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
13113 | sig_offset = (initial_length_size | |
13114 | + 2 /*version*/ | |
13115 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
13116 | + 1 /*address_size*/); | |
13117 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
13118 | type_sig = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
13119 | ||
13120 | /* This is only used to lookup previously recorded types. | |
13121 | If we didn't find it, it's our bug. */ | |
13122 | gdb_assert (type_sig != NULL); | |
13123 | gdb_assert (offset == type_sig->offset); | |
13124 | ||
13125 | return type_sig; | |
13126 | } | |
13127 | ||
13128 | /* Read in signatured type at OFFSET and build its CU and die(s). */ | |
13129 | ||
13130 | static void | |
13131 | read_signatured_type_at_offset (struct objfile *objfile, | |
13132 | unsigned int offset) | |
13133 | { | |
13134 | struct signatured_type *type_sig; | |
13135 | ||
be391dca TT |
13136 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
13137 | ||
348e048f DE |
13138 | /* We have the section offset, but we need the signature to do the |
13139 | hash table lookup. */ | |
13140 | type_sig = lookup_signatured_type_at_offset (objfile, offset); | |
13141 | ||
13142 | gdb_assert (type_sig->per_cu.cu == NULL); | |
13143 | ||
13144 | read_signatured_type (objfile, type_sig); | |
13145 | ||
13146 | gdb_assert (type_sig->per_cu.cu != NULL); | |
13147 | } | |
13148 | ||
13149 | /* Read in a signatured type and build its CU and DIEs. */ | |
13150 | ||
13151 | static void | |
13152 | read_signatured_type (struct objfile *objfile, | |
13153 | struct signatured_type *type_sig) | |
13154 | { | |
1fd400ff | 13155 | gdb_byte *types_ptr; |
348e048f DE |
13156 | struct die_reader_specs reader_specs; |
13157 | struct dwarf2_cu *cu; | |
13158 | ULONGEST signature; | |
13159 | struct cleanup *back_to, *free_cu_cleanup; | |
13160 | struct attribute *attr; | |
13161 | ||
1fd400ff TT |
13162 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
13163 | types_ptr = dwarf2_per_objfile->types.buffer + type_sig->offset; | |
13164 | ||
348e048f DE |
13165 | gdb_assert (type_sig->per_cu.cu == NULL); |
13166 | ||
13167 | cu = xmalloc (sizeof (struct dwarf2_cu)); | |
13168 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
13169 | obstack_init (&cu->comp_unit_obstack); | |
13170 | cu->objfile = objfile; | |
13171 | type_sig->per_cu.cu = cu; | |
13172 | cu->per_cu = &type_sig->per_cu; | |
13173 | ||
13174 | /* If an error occurs while loading, release our storage. */ | |
13175 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
13176 | ||
13177 | types_ptr = read_type_comp_unit_head (&cu->header, &signature, | |
13178 | types_ptr, objfile->obfd); | |
13179 | gdb_assert (signature == type_sig->signature); | |
13180 | ||
13181 | cu->die_hash | |
13182 | = htab_create_alloc_ex (cu->header.length / 12, | |
13183 | die_hash, | |
13184 | die_eq, | |
13185 | NULL, | |
13186 | &cu->comp_unit_obstack, | |
13187 | hashtab_obstack_allocate, | |
13188 | dummy_obstack_deallocate); | |
13189 | ||
13190 | dwarf2_read_abbrevs (cu->objfile->obfd, cu); | |
13191 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
13192 | ||
13193 | init_cu_die_reader (&reader_specs, cu); | |
13194 | ||
13195 | cu->dies = read_die_and_children (&reader_specs, types_ptr, &types_ptr, | |
13196 | NULL /*parent*/); | |
13197 | ||
13198 | /* We try not to read any attributes in this function, because not | |
13199 | all objfiles needed for references have been loaded yet, and symbol | |
13200 | table processing isn't initialized. But we have to set the CU language, | |
13201 | or we won't be able to build types correctly. */ | |
13202 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
13203 | if (attr) | |
13204 | set_cu_language (DW_UNSND (attr), cu); | |
13205 | else | |
13206 | set_cu_language (language_minimal, cu); | |
13207 | ||
13208 | do_cleanups (back_to); | |
13209 | ||
13210 | /* We've successfully allocated this compilation unit. Let our caller | |
13211 | clean it up when finished with it. */ | |
13212 | discard_cleanups (free_cu_cleanup); | |
13213 | ||
13214 | type_sig->per_cu.cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
13215 | dwarf2_per_objfile->read_in_chain = &type_sig->per_cu; | |
c906108c SS |
13216 | } |
13217 | ||
c906108c SS |
13218 | /* Decode simple location descriptions. |
13219 | Given a pointer to a dwarf block that defines a location, compute | |
13220 | the location and return the value. | |
13221 | ||
4cecd739 DJ |
13222 | NOTE drow/2003-11-18: This function is called in two situations |
13223 | now: for the address of static or global variables (partial symbols | |
13224 | only) and for offsets into structures which are expected to be | |
13225 | (more or less) constant. The partial symbol case should go away, | |
13226 | and only the constant case should remain. That will let this | |
13227 | function complain more accurately. A few special modes are allowed | |
13228 | without complaint for global variables (for instance, global | |
13229 | register values and thread-local values). | |
c906108c SS |
13230 | |
13231 | A location description containing no operations indicates that the | |
4cecd739 | 13232 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
13233 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
13234 | callers will only want a very basic result and this can become a | |
13235 | complaint. | |
c906108c | 13236 | |
c906108c SS |
13237 | Note that stack[0] is unused except as a default error return. |
13238 | Note that stack overflow is not yet handled. */ | |
13239 | ||
13240 | static CORE_ADDR | |
e7c27a73 | 13241 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 13242 | { |
e7c27a73 | 13243 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13244 | int i; |
13245 | int size = blk->size; | |
fe1b8b76 | 13246 | gdb_byte *data = blk->data; |
c906108c SS |
13247 | CORE_ADDR stack[64]; |
13248 | int stacki; | |
13249 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 13250 | gdb_byte op; |
c906108c SS |
13251 | |
13252 | i = 0; | |
13253 | stacki = 0; | |
13254 | stack[stacki] = 0; | |
c906108c SS |
13255 | |
13256 | while (i < size) | |
13257 | { | |
c906108c SS |
13258 | op = data[i++]; |
13259 | switch (op) | |
13260 | { | |
f1bea926 JM |
13261 | case DW_OP_lit0: |
13262 | case DW_OP_lit1: | |
13263 | case DW_OP_lit2: | |
13264 | case DW_OP_lit3: | |
13265 | case DW_OP_lit4: | |
13266 | case DW_OP_lit5: | |
13267 | case DW_OP_lit6: | |
13268 | case DW_OP_lit7: | |
13269 | case DW_OP_lit8: | |
13270 | case DW_OP_lit9: | |
13271 | case DW_OP_lit10: | |
13272 | case DW_OP_lit11: | |
13273 | case DW_OP_lit12: | |
13274 | case DW_OP_lit13: | |
13275 | case DW_OP_lit14: | |
13276 | case DW_OP_lit15: | |
13277 | case DW_OP_lit16: | |
13278 | case DW_OP_lit17: | |
13279 | case DW_OP_lit18: | |
13280 | case DW_OP_lit19: | |
13281 | case DW_OP_lit20: | |
13282 | case DW_OP_lit21: | |
13283 | case DW_OP_lit22: | |
13284 | case DW_OP_lit23: | |
13285 | case DW_OP_lit24: | |
13286 | case DW_OP_lit25: | |
13287 | case DW_OP_lit26: | |
13288 | case DW_OP_lit27: | |
13289 | case DW_OP_lit28: | |
13290 | case DW_OP_lit29: | |
13291 | case DW_OP_lit30: | |
13292 | case DW_OP_lit31: | |
13293 | stack[++stacki] = op - DW_OP_lit0; | |
13294 | break; | |
13295 | ||
c906108c SS |
13296 | case DW_OP_reg0: |
13297 | case DW_OP_reg1: | |
13298 | case DW_OP_reg2: | |
13299 | case DW_OP_reg3: | |
13300 | case DW_OP_reg4: | |
13301 | case DW_OP_reg5: | |
13302 | case DW_OP_reg6: | |
13303 | case DW_OP_reg7: | |
13304 | case DW_OP_reg8: | |
13305 | case DW_OP_reg9: | |
13306 | case DW_OP_reg10: | |
13307 | case DW_OP_reg11: | |
13308 | case DW_OP_reg12: | |
13309 | case DW_OP_reg13: | |
13310 | case DW_OP_reg14: | |
13311 | case DW_OP_reg15: | |
13312 | case DW_OP_reg16: | |
13313 | case DW_OP_reg17: | |
13314 | case DW_OP_reg18: | |
13315 | case DW_OP_reg19: | |
13316 | case DW_OP_reg20: | |
13317 | case DW_OP_reg21: | |
13318 | case DW_OP_reg22: | |
13319 | case DW_OP_reg23: | |
13320 | case DW_OP_reg24: | |
13321 | case DW_OP_reg25: | |
13322 | case DW_OP_reg26: | |
13323 | case DW_OP_reg27: | |
13324 | case DW_OP_reg28: | |
13325 | case DW_OP_reg29: | |
13326 | case DW_OP_reg30: | |
13327 | case DW_OP_reg31: | |
c906108c | 13328 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
13329 | if (i < size) |
13330 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
13331 | break; |
13332 | ||
13333 | case DW_OP_regx: | |
c906108c SS |
13334 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
13335 | i += bytes_read; | |
c906108c | 13336 | stack[++stacki] = unsnd; |
4cecd739 DJ |
13337 | if (i < size) |
13338 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
13339 | break; |
13340 | ||
13341 | case DW_OP_addr: | |
107d2387 | 13342 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 13343 | cu, &bytes_read); |
107d2387 | 13344 | i += bytes_read; |
c906108c SS |
13345 | break; |
13346 | ||
13347 | case DW_OP_const1u: | |
13348 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
13349 | i += 1; | |
13350 | break; | |
13351 | ||
13352 | case DW_OP_const1s: | |
13353 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
13354 | i += 1; | |
13355 | break; | |
13356 | ||
13357 | case DW_OP_const2u: | |
13358 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
13359 | i += 2; | |
13360 | break; | |
13361 | ||
13362 | case DW_OP_const2s: | |
13363 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
13364 | i += 2; | |
13365 | break; | |
13366 | ||
13367 | case DW_OP_const4u: | |
13368 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
13369 | i += 4; | |
13370 | break; | |
13371 | ||
13372 | case DW_OP_const4s: | |
13373 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
13374 | i += 4; | |
13375 | break; | |
13376 | ||
13377 | case DW_OP_constu: | |
13378 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 13379 | &bytes_read); |
c906108c SS |
13380 | i += bytes_read; |
13381 | break; | |
13382 | ||
13383 | case DW_OP_consts: | |
13384 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
13385 | i += bytes_read; | |
13386 | break; | |
13387 | ||
f1bea926 JM |
13388 | case DW_OP_dup: |
13389 | stack[stacki + 1] = stack[stacki]; | |
13390 | stacki++; | |
13391 | break; | |
13392 | ||
c906108c SS |
13393 | case DW_OP_plus: |
13394 | stack[stacki - 1] += stack[stacki]; | |
13395 | stacki--; | |
13396 | break; | |
13397 | ||
13398 | case DW_OP_plus_uconst: | |
13399 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
13400 | i += bytes_read; | |
13401 | break; | |
13402 | ||
13403 | case DW_OP_minus: | |
f1bea926 | 13404 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
13405 | stacki--; |
13406 | break; | |
13407 | ||
7a292a7a | 13408 | case DW_OP_deref: |
7a292a7a | 13409 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
13410 | this using GDB's address_class enum. This is valid for partial |
13411 | global symbols, although the variable's address will be bogus | |
13412 | in the psymtab. */ | |
7a292a7a | 13413 | if (i < size) |
4d3c2250 | 13414 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
13415 | break; |
13416 | ||
9d774e44 | 13417 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
13418 | /* The top of the stack has the offset from the beginning |
13419 | of the thread control block at which the variable is located. */ | |
13420 | /* Nothing should follow this operator, so the top of stack would | |
13421 | be returned. */ | |
4cecd739 DJ |
13422 | /* This is valid for partial global symbols, but the variable's |
13423 | address will be bogus in the psymtab. */ | |
9d774e44 | 13424 | if (i < size) |
4d3c2250 | 13425 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
13426 | break; |
13427 | ||
42be36b3 CT |
13428 | case DW_OP_GNU_uninit: |
13429 | break; | |
13430 | ||
c906108c | 13431 | default: |
e2e0b3e5 | 13432 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), |
9eae7c52 | 13433 | dwarf_stack_op_name (op, 1)); |
c906108c SS |
13434 | return (stack[stacki]); |
13435 | } | |
13436 | } | |
13437 | return (stack[stacki]); | |
13438 | } | |
13439 | ||
13440 | /* memory allocation interface */ | |
13441 | ||
c906108c | 13442 | static struct dwarf_block * |
7b5a2f43 | 13443 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
13444 | { |
13445 | struct dwarf_block *blk; | |
13446 | ||
13447 | blk = (struct dwarf_block *) | |
7b5a2f43 | 13448 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
13449 | return (blk); |
13450 | } | |
13451 | ||
13452 | static struct abbrev_info * | |
f3dd6933 | 13453 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
13454 | { |
13455 | struct abbrev_info *abbrev; | |
13456 | ||
f3dd6933 DJ |
13457 | abbrev = (struct abbrev_info *) |
13458 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
13459 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
13460 | return (abbrev); | |
13461 | } | |
13462 | ||
13463 | static struct die_info * | |
b60c80d6 | 13464 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
13465 | { |
13466 | struct die_info *die; | |
b60c80d6 DJ |
13467 | size_t size = sizeof (struct die_info); |
13468 | ||
13469 | if (num_attrs > 1) | |
13470 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 13471 | |
b60c80d6 | 13472 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
13473 | memset (die, 0, sizeof (struct die_info)); |
13474 | return (die); | |
13475 | } | |
2e276125 JB |
13476 | |
13477 | \f | |
13478 | /* Macro support. */ | |
13479 | ||
13480 | ||
13481 | /* Return the full name of file number I in *LH's file name table. | |
13482 | Use COMP_DIR as the name of the current directory of the | |
13483 | compilation. The result is allocated using xmalloc; the caller is | |
13484 | responsible for freeing it. */ | |
13485 | static char * | |
13486 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
13487 | { | |
6a83a1e6 EZ |
13488 | /* Is the file number a valid index into the line header's file name |
13489 | table? Remember that file numbers start with one, not zero. */ | |
13490 | if (1 <= file && file <= lh->num_file_names) | |
13491 | { | |
13492 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 13493 | |
6a83a1e6 EZ |
13494 | if (IS_ABSOLUTE_PATH (fe->name)) |
13495 | return xstrdup (fe->name); | |
13496 | else | |
13497 | { | |
13498 | const char *dir; | |
13499 | int dir_len; | |
13500 | char *full_name; | |
13501 | ||
13502 | if (fe->dir_index) | |
13503 | dir = lh->include_dirs[fe->dir_index - 1]; | |
13504 | else | |
13505 | dir = comp_dir; | |
13506 | ||
13507 | if (dir) | |
13508 | { | |
13509 | dir_len = strlen (dir); | |
13510 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
13511 | strcpy (full_name, dir); | |
13512 | full_name[dir_len] = '/'; | |
13513 | strcpy (full_name + dir_len + 1, fe->name); | |
13514 | return full_name; | |
13515 | } | |
13516 | else | |
13517 | return xstrdup (fe->name); | |
13518 | } | |
13519 | } | |
2e276125 JB |
13520 | else |
13521 | { | |
6a83a1e6 EZ |
13522 | /* The compiler produced a bogus file number. We can at least |
13523 | record the macro definitions made in the file, even if we | |
13524 | won't be able to find the file by name. */ | |
13525 | char fake_name[80]; | |
9a619af0 | 13526 | |
6a83a1e6 | 13527 | sprintf (fake_name, "<bad macro file number %d>", file); |
2e276125 | 13528 | |
6e70227d | 13529 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
13530 | _("bad file number in macro information (%d)"), |
13531 | file); | |
2e276125 | 13532 | |
6a83a1e6 | 13533 | return xstrdup (fake_name); |
2e276125 JB |
13534 | } |
13535 | } | |
13536 | ||
13537 | ||
13538 | static struct macro_source_file * | |
13539 | macro_start_file (int file, int line, | |
13540 | struct macro_source_file *current_file, | |
13541 | const char *comp_dir, | |
13542 | struct line_header *lh, struct objfile *objfile) | |
13543 | { | |
13544 | /* The full name of this source file. */ | |
13545 | char *full_name = file_full_name (file, lh, comp_dir); | |
13546 | ||
13547 | /* We don't create a macro table for this compilation unit | |
13548 | at all until we actually get a filename. */ | |
13549 | if (! pending_macros) | |
4a146b47 | 13550 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 13551 | objfile->macro_cache); |
2e276125 JB |
13552 | |
13553 | if (! current_file) | |
13554 | /* If we have no current file, then this must be the start_file | |
13555 | directive for the compilation unit's main source file. */ | |
13556 | current_file = macro_set_main (pending_macros, full_name); | |
13557 | else | |
13558 | current_file = macro_include (current_file, line, full_name); | |
13559 | ||
13560 | xfree (full_name); | |
6e70227d | 13561 | |
2e276125 JB |
13562 | return current_file; |
13563 | } | |
13564 | ||
13565 | ||
13566 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
13567 | followed by a null byte. */ | |
13568 | static char * | |
13569 | copy_string (const char *buf, int len) | |
13570 | { | |
13571 | char *s = xmalloc (len + 1); | |
9a619af0 | 13572 | |
2e276125 JB |
13573 | memcpy (s, buf, len); |
13574 | s[len] = '\0'; | |
2e276125 JB |
13575 | return s; |
13576 | } | |
13577 | ||
13578 | ||
13579 | static const char * | |
13580 | consume_improper_spaces (const char *p, const char *body) | |
13581 | { | |
13582 | if (*p == ' ') | |
13583 | { | |
4d3c2250 | 13584 | complaint (&symfile_complaints, |
e2e0b3e5 | 13585 | _("macro definition contains spaces in formal argument list:\n`%s'"), |
4d3c2250 | 13586 | body); |
2e276125 JB |
13587 | |
13588 | while (*p == ' ') | |
13589 | p++; | |
13590 | } | |
13591 | ||
13592 | return p; | |
13593 | } | |
13594 | ||
13595 | ||
13596 | static void | |
13597 | parse_macro_definition (struct macro_source_file *file, int line, | |
13598 | const char *body) | |
13599 | { | |
13600 | const char *p; | |
13601 | ||
13602 | /* The body string takes one of two forms. For object-like macro | |
13603 | definitions, it should be: | |
13604 | ||
13605 | <macro name> " " <definition> | |
13606 | ||
13607 | For function-like macro definitions, it should be: | |
13608 | ||
13609 | <macro name> "() " <definition> | |
13610 | or | |
13611 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
13612 | ||
13613 | Spaces may appear only where explicitly indicated, and in the | |
13614 | <definition>. | |
13615 | ||
13616 | The Dwarf 2 spec says that an object-like macro's name is always | |
13617 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 13618 | the space when the macro's definition is the empty string. |
2e276125 JB |
13619 | |
13620 | The Dwarf 2 spec says that there should be no spaces between the | |
13621 | formal arguments in a function-like macro's formal argument list, | |
13622 | but versions of GCC around March 2002 include spaces after the | |
13623 | commas. */ | |
13624 | ||
13625 | ||
13626 | /* Find the extent of the macro name. The macro name is terminated | |
13627 | by either a space or null character (for an object-like macro) or | |
13628 | an opening paren (for a function-like macro). */ | |
13629 | for (p = body; *p; p++) | |
13630 | if (*p == ' ' || *p == '(') | |
13631 | break; | |
13632 | ||
13633 | if (*p == ' ' || *p == '\0') | |
13634 | { | |
13635 | /* It's an object-like macro. */ | |
13636 | int name_len = p - body; | |
13637 | char *name = copy_string (body, name_len); | |
13638 | const char *replacement; | |
13639 | ||
13640 | if (*p == ' ') | |
13641 | replacement = body + name_len + 1; | |
13642 | else | |
13643 | { | |
4d3c2250 | 13644 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
13645 | replacement = body + name_len; |
13646 | } | |
6e70227d | 13647 | |
2e276125 JB |
13648 | macro_define_object (file, line, name, replacement); |
13649 | ||
13650 | xfree (name); | |
13651 | } | |
13652 | else if (*p == '(') | |
13653 | { | |
13654 | /* It's a function-like macro. */ | |
13655 | char *name = copy_string (body, p - body); | |
13656 | int argc = 0; | |
13657 | int argv_size = 1; | |
13658 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
13659 | ||
13660 | p++; | |
13661 | ||
13662 | p = consume_improper_spaces (p, body); | |
13663 | ||
13664 | /* Parse the formal argument list. */ | |
13665 | while (*p && *p != ')') | |
13666 | { | |
13667 | /* Find the extent of the current argument name. */ | |
13668 | const char *arg_start = p; | |
13669 | ||
13670 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
13671 | p++; | |
13672 | ||
13673 | if (! *p || p == arg_start) | |
4d3c2250 | 13674 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
13675 | else |
13676 | { | |
13677 | /* Make sure argv has room for the new argument. */ | |
13678 | if (argc >= argv_size) | |
13679 | { | |
13680 | argv_size *= 2; | |
13681 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
13682 | } | |
13683 | ||
13684 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
13685 | } | |
13686 | ||
13687 | p = consume_improper_spaces (p, body); | |
13688 | ||
13689 | /* Consume the comma, if present. */ | |
13690 | if (*p == ',') | |
13691 | { | |
13692 | p++; | |
13693 | ||
13694 | p = consume_improper_spaces (p, body); | |
13695 | } | |
13696 | } | |
13697 | ||
13698 | if (*p == ')') | |
13699 | { | |
13700 | p++; | |
13701 | ||
13702 | if (*p == ' ') | |
13703 | /* Perfectly formed definition, no complaints. */ | |
13704 | macro_define_function (file, line, name, | |
6e70227d | 13705 | argc, (const char **) argv, |
2e276125 JB |
13706 | p + 1); |
13707 | else if (*p == '\0') | |
13708 | { | |
13709 | /* Complain, but do define it. */ | |
4d3c2250 | 13710 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 13711 | macro_define_function (file, line, name, |
6e70227d | 13712 | argc, (const char **) argv, |
2e276125 JB |
13713 | p); |
13714 | } | |
13715 | else | |
13716 | /* Just complain. */ | |
4d3c2250 | 13717 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
13718 | } |
13719 | else | |
13720 | /* Just complain. */ | |
4d3c2250 | 13721 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
13722 | |
13723 | xfree (name); | |
13724 | { | |
13725 | int i; | |
13726 | ||
13727 | for (i = 0; i < argc; i++) | |
13728 | xfree (argv[i]); | |
13729 | } | |
13730 | xfree (argv); | |
13731 | } | |
13732 | else | |
4d3c2250 | 13733 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
13734 | } |
13735 | ||
13736 | ||
13737 | static void | |
13738 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
13739 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 13740 | struct dwarf2_cu *cu) |
2e276125 | 13741 | { |
fe1b8b76 | 13742 | gdb_byte *mac_ptr, *mac_end; |
2e276125 | 13743 | struct macro_source_file *current_file = 0; |
757a13d0 JK |
13744 | enum dwarf_macinfo_record_type macinfo_type; |
13745 | int at_commandline; | |
2e276125 | 13746 | |
be391dca TT |
13747 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
13748 | &dwarf2_per_objfile->macinfo); | |
dce234bc | 13749 | if (dwarf2_per_objfile->macinfo.buffer == NULL) |
2e276125 | 13750 | { |
e2e0b3e5 | 13751 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
13752 | return; |
13753 | } | |
13754 | ||
757a13d0 JK |
13755 | /* First pass: Find the name of the base filename. |
13756 | This filename is needed in order to process all macros whose definition | |
13757 | (or undefinition) comes from the command line. These macros are defined | |
13758 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
13759 | associated to the base file. | |
13760 | ||
13761 | To determine the base file name, we scan the macro definitions until we | |
13762 | reach the first DW_MACINFO_start_file entry. We then initialize | |
13763 | CURRENT_FILE accordingly so that any macro definition found before the | |
13764 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
13765 | ||
dce234bc PP |
13766 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
13767 | mac_end = dwarf2_per_objfile->macinfo.buffer | |
13768 | + dwarf2_per_objfile->macinfo.size; | |
2e276125 | 13769 | |
757a13d0 | 13770 | do |
2e276125 | 13771 | { |
2e276125 JB |
13772 | /* Do we at least have room for a macinfo type byte? */ |
13773 | if (mac_ptr >= mac_end) | |
13774 | { | |
757a13d0 JK |
13775 | /* Complaint is printed during the second pass as GDB will probably |
13776 | stop the first pass earlier upon finding DW_MACINFO_start_file. */ | |
13777 | break; | |
2e276125 JB |
13778 | } |
13779 | ||
13780 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
13781 | mac_ptr++; | |
13782 | ||
13783 | switch (macinfo_type) | |
13784 | { | |
13785 | /* A zero macinfo type indicates the end of the macro | |
13786 | information. */ | |
13787 | case 0: | |
757a13d0 JK |
13788 | break; |
13789 | ||
13790 | case DW_MACINFO_define: | |
13791 | case DW_MACINFO_undef: | |
13792 | /* Only skip the data by MAC_PTR. */ | |
13793 | { | |
13794 | unsigned int bytes_read; | |
13795 | ||
13796 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13797 | mac_ptr += bytes_read; | |
9b1c24c8 | 13798 | read_direct_string (abfd, mac_ptr, &bytes_read); |
757a13d0 JK |
13799 | mac_ptr += bytes_read; |
13800 | } | |
13801 | break; | |
13802 | ||
13803 | case DW_MACINFO_start_file: | |
13804 | { | |
13805 | unsigned int bytes_read; | |
13806 | int line, file; | |
13807 | ||
13808 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13809 | mac_ptr += bytes_read; | |
13810 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13811 | mac_ptr += bytes_read; | |
13812 | ||
13813 | current_file = macro_start_file (file, line, current_file, comp_dir, | |
13814 | lh, cu->objfile); | |
13815 | } | |
13816 | break; | |
13817 | ||
13818 | case DW_MACINFO_end_file: | |
13819 | /* No data to skip by MAC_PTR. */ | |
13820 | break; | |
13821 | ||
13822 | case DW_MACINFO_vendor_ext: | |
13823 | /* Only skip the data by MAC_PTR. */ | |
13824 | { | |
13825 | unsigned int bytes_read; | |
13826 | ||
13827 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13828 | mac_ptr += bytes_read; | |
9b1c24c8 | 13829 | read_direct_string (abfd, mac_ptr, &bytes_read); |
757a13d0 JK |
13830 | mac_ptr += bytes_read; |
13831 | } | |
13832 | break; | |
13833 | ||
13834 | default: | |
13835 | break; | |
13836 | } | |
13837 | } while (macinfo_type != 0 && current_file == NULL); | |
13838 | ||
13839 | /* Second pass: Process all entries. | |
13840 | ||
13841 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
13842 | command-line macro definitions/undefinitions. This flag is unset when we | |
13843 | reach the first DW_MACINFO_start_file entry. */ | |
13844 | ||
dce234bc | 13845 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
757a13d0 JK |
13846 | |
13847 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
13848 | GDB is still reading the definitions from command line. First | |
13849 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
13850 | to create CURRENT_FILE for the main source holding also the command line | |
13851 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
13852 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
13853 | ||
13854 | at_commandline = 1; | |
13855 | ||
13856 | do | |
13857 | { | |
13858 | /* Do we at least have room for a macinfo type byte? */ | |
13859 | if (mac_ptr >= mac_end) | |
13860 | { | |
13861 | dwarf2_macros_too_long_complaint (); | |
13862 | break; | |
13863 | } | |
13864 | ||
13865 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
13866 | mac_ptr++; | |
13867 | ||
13868 | switch (macinfo_type) | |
13869 | { | |
13870 | /* A zero macinfo type indicates the end of the macro | |
13871 | information. */ | |
13872 | case 0: | |
13873 | break; | |
2e276125 JB |
13874 | |
13875 | case DW_MACINFO_define: | |
13876 | case DW_MACINFO_undef: | |
13877 | { | |
891d2f0b | 13878 | unsigned int bytes_read; |
2e276125 JB |
13879 | int line; |
13880 | char *body; | |
13881 | ||
13882 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13883 | mac_ptr += bytes_read; | |
9b1c24c8 | 13884 | body = read_direct_string (abfd, mac_ptr, &bytes_read); |
2e276125 JB |
13885 | mac_ptr += bytes_read; |
13886 | ||
13887 | if (! current_file) | |
757a13d0 JK |
13888 | { |
13889 | /* DWARF violation as no main source is present. */ | |
13890 | complaint (&symfile_complaints, | |
13891 | _("debug info with no main source gives macro %s " | |
13892 | "on line %d: %s"), | |
6e70227d DE |
13893 | macinfo_type == DW_MACINFO_define ? |
13894 | _("definition") : | |
905e0470 PM |
13895 | macinfo_type == DW_MACINFO_undef ? |
13896 | _("undefinition") : | |
13897 | _("something-or-other"), line, body); | |
757a13d0 JK |
13898 | break; |
13899 | } | |
13900 | if ((line == 0 && !at_commandline) || (line != 0 && at_commandline)) | |
4d3c2250 | 13901 | complaint (&symfile_complaints, |
757a13d0 JK |
13902 | _("debug info gives %s macro %s with %s line %d: %s"), |
13903 | at_commandline ? _("command-line") : _("in-file"), | |
905e0470 | 13904 | macinfo_type == DW_MACINFO_define ? |
6e70227d | 13905 | _("definition") : |
905e0470 PM |
13906 | macinfo_type == DW_MACINFO_undef ? |
13907 | _("undefinition") : | |
13908 | _("something-or-other"), | |
757a13d0 JK |
13909 | line == 0 ? _("zero") : _("non-zero"), line, body); |
13910 | ||
13911 | if (macinfo_type == DW_MACINFO_define) | |
13912 | parse_macro_definition (current_file, line, body); | |
13913 | else if (macinfo_type == DW_MACINFO_undef) | |
13914 | macro_undef (current_file, line, body); | |
2e276125 JB |
13915 | } |
13916 | break; | |
13917 | ||
13918 | case DW_MACINFO_start_file: | |
13919 | { | |
891d2f0b | 13920 | unsigned int bytes_read; |
2e276125 JB |
13921 | int line, file; |
13922 | ||
13923 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13924 | mac_ptr += bytes_read; | |
13925 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13926 | mac_ptr += bytes_read; | |
13927 | ||
757a13d0 JK |
13928 | if ((line == 0 && !at_commandline) || (line != 0 && at_commandline)) |
13929 | complaint (&symfile_complaints, | |
13930 | _("debug info gives source %d included " | |
13931 | "from %s at %s line %d"), | |
13932 | file, at_commandline ? _("command-line") : _("file"), | |
13933 | line == 0 ? _("zero") : _("non-zero"), line); | |
13934 | ||
13935 | if (at_commandline) | |
13936 | { | |
13937 | /* This DW_MACINFO_start_file was executed in the pass one. */ | |
13938 | at_commandline = 0; | |
13939 | } | |
13940 | else | |
13941 | current_file = macro_start_file (file, line, | |
13942 | current_file, comp_dir, | |
13943 | lh, cu->objfile); | |
2e276125 JB |
13944 | } |
13945 | break; | |
13946 | ||
13947 | case DW_MACINFO_end_file: | |
13948 | if (! current_file) | |
4d3c2250 | 13949 | complaint (&symfile_complaints, |
e2e0b3e5 | 13950 | _("macro debug info has an unmatched `close_file' directive")); |
2e276125 JB |
13951 | else |
13952 | { | |
13953 | current_file = current_file->included_by; | |
13954 | if (! current_file) | |
13955 | { | |
13956 | enum dwarf_macinfo_record_type next_type; | |
13957 | ||
13958 | /* GCC circa March 2002 doesn't produce the zero | |
13959 | type byte marking the end of the compilation | |
13960 | unit. Complain if it's not there, but exit no | |
13961 | matter what. */ | |
13962 | ||
13963 | /* Do we at least have room for a macinfo type byte? */ | |
13964 | if (mac_ptr >= mac_end) | |
13965 | { | |
4d3c2250 | 13966 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
13967 | return; |
13968 | } | |
13969 | ||
13970 | /* We don't increment mac_ptr here, so this is just | |
13971 | a look-ahead. */ | |
13972 | next_type = read_1_byte (abfd, mac_ptr); | |
13973 | if (next_type != 0) | |
4d3c2250 | 13974 | complaint (&symfile_complaints, |
e2e0b3e5 | 13975 | _("no terminating 0-type entry for macros in `.debug_macinfo' section")); |
2e276125 JB |
13976 | |
13977 | return; | |
13978 | } | |
13979 | } | |
13980 | break; | |
13981 | ||
13982 | case DW_MACINFO_vendor_ext: | |
13983 | { | |
891d2f0b | 13984 | unsigned int bytes_read; |
2e276125 JB |
13985 | int constant; |
13986 | char *string; | |
13987 | ||
13988 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13989 | mac_ptr += bytes_read; | |
9b1c24c8 | 13990 | string = read_direct_string (abfd, mac_ptr, &bytes_read); |
2e276125 JB |
13991 | mac_ptr += bytes_read; |
13992 | ||
13993 | /* We don't recognize any vendor extensions. */ | |
13994 | } | |
13995 | break; | |
13996 | } | |
757a13d0 | 13997 | } while (macinfo_type != 0); |
2e276125 | 13998 | } |
8e19ed76 PS |
13999 | |
14000 | /* Check if the attribute's form is a DW_FORM_block* | |
14001 | if so return true else false. */ | |
14002 | static int | |
14003 | attr_form_is_block (struct attribute *attr) | |
14004 | { | |
14005 | return (attr == NULL ? 0 : | |
14006 | attr->form == DW_FORM_block1 | |
14007 | || attr->form == DW_FORM_block2 | |
14008 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
14009 | || attr->form == DW_FORM_block |
14010 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 14011 | } |
4c2df51b | 14012 | |
c6a0999f JB |
14013 | /* Return non-zero if ATTR's value is a section offset --- classes |
14014 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
14015 | You may use DW_UNSND (attr) to retrieve such offsets. | |
14016 | ||
14017 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
14018 | may have a value that belongs to more than one of these classes; it | |
14019 | would be ambiguous if we did, because we use the same forms for all | |
14020 | of them. */ | |
3690dd37 JB |
14021 | static int |
14022 | attr_form_is_section_offset (struct attribute *attr) | |
14023 | { | |
14024 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
14025 | || attr->form == DW_FORM_data8 |
14026 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
14027 | } |
14028 | ||
14029 | ||
14030 | /* Return non-zero if ATTR's value falls in the 'constant' class, or | |
14031 | zero otherwise. When this function returns true, you can apply | |
14032 | dwarf2_get_attr_constant_value to it. | |
14033 | ||
14034 | However, note that for some attributes you must check | |
14035 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
14036 | and DW_FORM_data8 are members of both the constant class, and of | |
14037 | the classes that contain offsets into other debug sections | |
14038 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
14039 | that, if an attribute's can be either a constant or one of the | |
14040 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
14041 | taken as section offsets, not constants. */ | |
14042 | static int | |
14043 | attr_form_is_constant (struct attribute *attr) | |
14044 | { | |
14045 | switch (attr->form) | |
14046 | { | |
14047 | case DW_FORM_sdata: | |
14048 | case DW_FORM_udata: | |
14049 | case DW_FORM_data1: | |
14050 | case DW_FORM_data2: | |
14051 | case DW_FORM_data4: | |
14052 | case DW_FORM_data8: | |
14053 | return 1; | |
14054 | default: | |
14055 | return 0; | |
14056 | } | |
14057 | } | |
14058 | ||
4c2df51b DJ |
14059 | static void |
14060 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 14061 | struct dwarf2_cu *cu) |
4c2df51b | 14062 | { |
3690dd37 | 14063 | if (attr_form_is_section_offset (attr) |
99bcc461 DJ |
14064 | /* ".debug_loc" may not exist at all, or the offset may be outside |
14065 | the section. If so, fall through to the complaint in the | |
14066 | other branch. */ | |
dce234bc | 14067 | && DW_UNSND (attr) < dwarf2_per_objfile->loc.size) |
4c2df51b | 14068 | { |
0d53c4c4 | 14069 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 14070 | |
4a146b47 | 14071 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 14072 | sizeof (struct dwarf2_loclist_baton)); |
ae0d2f24 UW |
14073 | baton->per_cu = cu->per_cu; |
14074 | gdb_assert (baton->per_cu); | |
4c2df51b | 14075 | |
be391dca TT |
14076 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
14077 | &dwarf2_per_objfile->loc); | |
14078 | ||
0d53c4c4 DJ |
14079 | /* We don't know how long the location list is, but make sure we |
14080 | don't run off the edge of the section. */ | |
dce234bc PP |
14081 | baton->size = dwarf2_per_objfile->loc.size - DW_UNSND (attr); |
14082 | baton->data = dwarf2_per_objfile->loc.buffer + DW_UNSND (attr); | |
d00adf39 DE |
14083 | baton->base_address = cu->base_address; |
14084 | if (cu->base_known == 0) | |
0d53c4c4 | 14085 | complaint (&symfile_complaints, |
e2e0b3e5 | 14086 | _("Location list used without specifying the CU base address.")); |
4c2df51b | 14087 | |
768a979c | 14088 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
14089 | SYMBOL_LOCATION_BATON (sym) = baton; |
14090 | } | |
14091 | else | |
14092 | { | |
14093 | struct dwarf2_locexpr_baton *baton; | |
14094 | ||
4a146b47 | 14095 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 14096 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
14097 | baton->per_cu = cu->per_cu; |
14098 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
14099 | |
14100 | if (attr_form_is_block (attr)) | |
14101 | { | |
14102 | /* Note that we're just copying the block's data pointer | |
14103 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
14104 | info_buffer for SYM's objfile; right now we never release |
14105 | that buffer, but when we do clean up properly this may | |
14106 | need to change. */ | |
0d53c4c4 DJ |
14107 | baton->size = DW_BLOCK (attr)->size; |
14108 | baton->data = DW_BLOCK (attr)->data; | |
14109 | } | |
14110 | else | |
14111 | { | |
14112 | dwarf2_invalid_attrib_class_complaint ("location description", | |
14113 | SYMBOL_NATURAL_NAME (sym)); | |
14114 | baton->size = 0; | |
14115 | baton->data = NULL; | |
14116 | } | |
6e70227d | 14117 | |
768a979c | 14118 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
14119 | SYMBOL_LOCATION_BATON (sym) = baton; |
14120 | } | |
4c2df51b | 14121 | } |
6502dd73 | 14122 | |
9aa1f1e3 TT |
14123 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
14124 | came from a separate debuginfo file, then the master objfile is | |
14125 | returned. */ | |
ae0d2f24 UW |
14126 | |
14127 | struct objfile * | |
14128 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
14129 | { | |
9291a0cd | 14130 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
14131 | |
14132 | /* Return the master objfile, so that we can report and look up the | |
14133 | correct file containing this variable. */ | |
14134 | if (objfile->separate_debug_objfile_backlink) | |
14135 | objfile = objfile->separate_debug_objfile_backlink; | |
14136 | ||
14137 | return objfile; | |
14138 | } | |
14139 | ||
14140 | /* Return the address size given in the compilation unit header for CU. */ | |
14141 | ||
14142 | CORE_ADDR | |
14143 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) | |
14144 | { | |
14145 | if (per_cu->cu) | |
14146 | return per_cu->cu->header.addr_size; | |
14147 | else | |
14148 | { | |
14149 | /* If the CU is not currently read in, we re-read its header. */ | |
9291a0cd | 14150 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
14151 | struct dwarf2_per_objfile *per_objfile |
14152 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
dce234bc | 14153 | gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset; |
ae0d2f24 | 14154 | struct comp_unit_head cu_header; |
9a619af0 | 14155 | |
ae0d2f24 UW |
14156 | memset (&cu_header, 0, sizeof cu_header); |
14157 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
14158 | return cu_header.addr_size; | |
14159 | } | |
14160 | } | |
14161 | ||
9eae7c52 TT |
14162 | /* Return the offset size given in the compilation unit header for CU. */ |
14163 | ||
14164 | int | |
14165 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
14166 | { | |
14167 | if (per_cu->cu) | |
14168 | return per_cu->cu->header.offset_size; | |
14169 | else | |
14170 | { | |
14171 | /* If the CU is not currently read in, we re-read its header. */ | |
9291a0cd | 14172 | struct objfile *objfile = per_cu->objfile; |
9eae7c52 TT |
14173 | struct dwarf2_per_objfile *per_objfile |
14174 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
14175 | gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset; | |
14176 | struct comp_unit_head cu_header; | |
14177 | ||
14178 | memset (&cu_header, 0, sizeof cu_header); | |
14179 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
14180 | return cu_header.offset_size; | |
14181 | } | |
14182 | } | |
14183 | ||
9aa1f1e3 TT |
14184 | /* Return the text offset of the CU. The returned offset comes from |
14185 | this CU's objfile. If this objfile came from a separate debuginfo | |
14186 | file, then the offset may be different from the corresponding | |
14187 | offset in the parent objfile. */ | |
14188 | ||
14189 | CORE_ADDR | |
14190 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
14191 | { | |
bb3fa9d0 | 14192 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
14193 | |
14194 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14195 | } | |
14196 | ||
348e048f DE |
14197 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
14198 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
14199 | |
14200 | static struct dwarf2_per_cu_data * | |
c764a876 | 14201 | dwarf2_find_containing_comp_unit (unsigned int offset, |
ae038cb0 DJ |
14202 | struct objfile *objfile) |
14203 | { | |
14204 | struct dwarf2_per_cu_data *this_cu; | |
14205 | int low, high; | |
14206 | ||
ae038cb0 DJ |
14207 | low = 0; |
14208 | high = dwarf2_per_objfile->n_comp_units - 1; | |
14209 | while (high > low) | |
14210 | { | |
14211 | int mid = low + (high - low) / 2; | |
9a619af0 | 14212 | |
ae038cb0 DJ |
14213 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) |
14214 | high = mid; | |
14215 | else | |
14216 | low = mid + 1; | |
14217 | } | |
14218 | gdb_assert (low == high); | |
14219 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
14220 | { | |
10b3939b | 14221 | if (low == 0) |
8a3fe4f8 AC |
14222 | error (_("Dwarf Error: could not find partial DIE containing " |
14223 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
14224 | (long) offset, bfd_get_filename (objfile->obfd)); |
14225 | ||
ae038cb0 DJ |
14226 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
14227 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
14228 | } | |
14229 | else | |
14230 | { | |
14231 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
14232 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
14233 | && offset >= this_cu->offset + this_cu->length) | |
c764a876 | 14234 | error (_("invalid dwarf2 offset %u"), offset); |
ae038cb0 DJ |
14235 | gdb_assert (offset < this_cu->offset + this_cu->length); |
14236 | return this_cu; | |
14237 | } | |
14238 | } | |
14239 | ||
10b3939b DJ |
14240 | /* Locate the compilation unit from OBJFILE which is located at exactly |
14241 | OFFSET. Raises an error on failure. */ | |
14242 | ||
ae038cb0 | 14243 | static struct dwarf2_per_cu_data * |
c764a876 | 14244 | dwarf2_find_comp_unit (unsigned int offset, struct objfile *objfile) |
ae038cb0 DJ |
14245 | { |
14246 | struct dwarf2_per_cu_data *this_cu; | |
9a619af0 | 14247 | |
ae038cb0 DJ |
14248 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); |
14249 | if (this_cu->offset != offset) | |
c764a876 | 14250 | error (_("no compilation unit with offset %u."), offset); |
ae038cb0 DJ |
14251 | return this_cu; |
14252 | } | |
14253 | ||
93311388 DE |
14254 | /* Malloc space for a dwarf2_cu for OBJFILE and initialize it. */ |
14255 | ||
14256 | static struct dwarf2_cu * | |
14257 | alloc_one_comp_unit (struct objfile *objfile) | |
14258 | { | |
14259 | struct dwarf2_cu *cu = xcalloc (1, sizeof (struct dwarf2_cu)); | |
14260 | cu->objfile = objfile; | |
14261 | obstack_init (&cu->comp_unit_obstack); | |
14262 | return cu; | |
14263 | } | |
14264 | ||
ae038cb0 DJ |
14265 | /* Release one cached compilation unit, CU. We unlink it from the tree |
14266 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
14267 | the caller is responsible for that. |
14268 | NOTE: DATA is a void * because this function is also used as a | |
14269 | cleanup routine. */ | |
ae038cb0 DJ |
14270 | |
14271 | static void | |
14272 | free_one_comp_unit (void *data) | |
14273 | { | |
14274 | struct dwarf2_cu *cu = data; | |
14275 | ||
14276 | if (cu->per_cu != NULL) | |
14277 | cu->per_cu->cu = NULL; | |
14278 | cu->per_cu = NULL; | |
14279 | ||
14280 | obstack_free (&cu->comp_unit_obstack, NULL); | |
14281 | ||
14282 | xfree (cu); | |
14283 | } | |
14284 | ||
72bf9492 | 14285 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
14286 | when we're finished with it. We can't free the pointer itself, but be |
14287 | sure to unlink it from the cache. Also release any associated storage | |
14288 | and perform cache maintenance. | |
72bf9492 DJ |
14289 | |
14290 | Only used during partial symbol parsing. */ | |
14291 | ||
14292 | static void | |
14293 | free_stack_comp_unit (void *data) | |
14294 | { | |
14295 | struct dwarf2_cu *cu = data; | |
14296 | ||
14297 | obstack_free (&cu->comp_unit_obstack, NULL); | |
14298 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
14299 | |
14300 | if (cu->per_cu != NULL) | |
14301 | { | |
14302 | /* This compilation unit is on the stack in our caller, so we | |
14303 | should not xfree it. Just unlink it. */ | |
14304 | cu->per_cu->cu = NULL; | |
14305 | cu->per_cu = NULL; | |
14306 | ||
14307 | /* If we had a per-cu pointer, then we may have other compilation | |
14308 | units loaded, so age them now. */ | |
14309 | age_cached_comp_units (); | |
14310 | } | |
14311 | } | |
14312 | ||
14313 | /* Free all cached compilation units. */ | |
14314 | ||
14315 | static void | |
14316 | free_cached_comp_units (void *data) | |
14317 | { | |
14318 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
14319 | ||
14320 | per_cu = dwarf2_per_objfile->read_in_chain; | |
14321 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
14322 | while (per_cu != NULL) | |
14323 | { | |
14324 | struct dwarf2_per_cu_data *next_cu; | |
14325 | ||
14326 | next_cu = per_cu->cu->read_in_chain; | |
14327 | ||
14328 | free_one_comp_unit (per_cu->cu); | |
14329 | *last_chain = next_cu; | |
14330 | ||
14331 | per_cu = next_cu; | |
14332 | } | |
14333 | } | |
14334 | ||
14335 | /* Increase the age counter on each cached compilation unit, and free | |
14336 | any that are too old. */ | |
14337 | ||
14338 | static void | |
14339 | age_cached_comp_units (void) | |
14340 | { | |
14341 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
14342 | ||
14343 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
14344 | per_cu = dwarf2_per_objfile->read_in_chain; | |
14345 | while (per_cu != NULL) | |
14346 | { | |
14347 | per_cu->cu->last_used ++; | |
14348 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
14349 | dwarf2_mark (per_cu->cu); | |
14350 | per_cu = per_cu->cu->read_in_chain; | |
14351 | } | |
14352 | ||
14353 | per_cu = dwarf2_per_objfile->read_in_chain; | |
14354 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
14355 | while (per_cu != NULL) | |
14356 | { | |
14357 | struct dwarf2_per_cu_data *next_cu; | |
14358 | ||
14359 | next_cu = per_cu->cu->read_in_chain; | |
14360 | ||
14361 | if (!per_cu->cu->mark) | |
14362 | { | |
14363 | free_one_comp_unit (per_cu->cu); | |
14364 | *last_chain = next_cu; | |
14365 | } | |
14366 | else | |
14367 | last_chain = &per_cu->cu->read_in_chain; | |
14368 | ||
14369 | per_cu = next_cu; | |
14370 | } | |
14371 | } | |
14372 | ||
14373 | /* Remove a single compilation unit from the cache. */ | |
14374 | ||
14375 | static void | |
14376 | free_one_cached_comp_unit (void *target_cu) | |
14377 | { | |
14378 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
14379 | ||
14380 | per_cu = dwarf2_per_objfile->read_in_chain; | |
14381 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
14382 | while (per_cu != NULL) | |
14383 | { | |
14384 | struct dwarf2_per_cu_data *next_cu; | |
14385 | ||
14386 | next_cu = per_cu->cu->read_in_chain; | |
14387 | ||
14388 | if (per_cu->cu == target_cu) | |
14389 | { | |
14390 | free_one_comp_unit (per_cu->cu); | |
14391 | *last_chain = next_cu; | |
14392 | break; | |
14393 | } | |
14394 | else | |
14395 | last_chain = &per_cu->cu->read_in_chain; | |
14396 | ||
14397 | per_cu = next_cu; | |
14398 | } | |
14399 | } | |
14400 | ||
fe3e1990 DJ |
14401 | /* Release all extra memory associated with OBJFILE. */ |
14402 | ||
14403 | void | |
14404 | dwarf2_free_objfile (struct objfile *objfile) | |
14405 | { | |
14406 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
14407 | ||
14408 | if (dwarf2_per_objfile == NULL) | |
14409 | return; | |
14410 | ||
14411 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
14412 | free_cached_comp_units (NULL); | |
14413 | ||
9291a0cd TT |
14414 | if (dwarf2_per_objfile->using_index) |
14415 | { | |
14416 | int i; | |
14417 | ||
14418 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
14419 | { | |
14420 | int j; | |
e254ef6a DE |
14421 | struct dwarf2_per_cu_data *per_cu = |
14422 | dwarf2_per_objfile->all_comp_units[i]; | |
9291a0cd | 14423 | |
e254ef6a | 14424 | if (!per_cu->v.quick->lines) |
9291a0cd TT |
14425 | continue; |
14426 | ||
e254ef6a | 14427 | for (j = 0; j < per_cu->v.quick->lines->num_file_names; ++j) |
9291a0cd | 14428 | { |
e254ef6a DE |
14429 | if (per_cu->v.quick->file_names) |
14430 | xfree ((void *) per_cu->v.quick->file_names[j]); | |
14431 | if (per_cu->v.quick->full_names) | |
14432 | xfree ((void *) per_cu->v.quick->full_names[j]); | |
9291a0cd TT |
14433 | } |
14434 | ||
e254ef6a | 14435 | free_line_header (per_cu->v.quick->lines); |
9291a0cd TT |
14436 | } |
14437 | } | |
14438 | ||
fe3e1990 DJ |
14439 | /* Everything else should be on the objfile obstack. */ |
14440 | } | |
14441 | ||
1c379e20 DJ |
14442 | /* A pair of DIE offset and GDB type pointer. We store these |
14443 | in a hash table separate from the DIEs, and preserve them | |
14444 | when the DIEs are flushed out of cache. */ | |
14445 | ||
14446 | struct dwarf2_offset_and_type | |
14447 | { | |
14448 | unsigned int offset; | |
14449 | struct type *type; | |
14450 | }; | |
14451 | ||
14452 | /* Hash function for a dwarf2_offset_and_type. */ | |
14453 | ||
14454 | static hashval_t | |
14455 | offset_and_type_hash (const void *item) | |
14456 | { | |
14457 | const struct dwarf2_offset_and_type *ofs = item; | |
9a619af0 | 14458 | |
1c379e20 DJ |
14459 | return ofs->offset; |
14460 | } | |
14461 | ||
14462 | /* Equality function for a dwarf2_offset_and_type. */ | |
14463 | ||
14464 | static int | |
14465 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
14466 | { | |
14467 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
14468 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 14469 | |
1c379e20 DJ |
14470 | return ofs_lhs->offset == ofs_rhs->offset; |
14471 | } | |
14472 | ||
14473 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
14474 | table if necessary. For convenience, return TYPE. |
14475 | ||
14476 | The DIEs reading must have careful ordering to: | |
14477 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
14478 | reading current DIE. | |
14479 | * Not trying to dereference contents of still incompletely read in types | |
14480 | while reading in other DIEs. | |
14481 | * Enable referencing still incompletely read in types just by a pointer to | |
14482 | the type without accessing its fields. | |
14483 | ||
14484 | Therefore caller should follow these rules: | |
14485 | * Try to fetch any prerequisite types we may need to build this DIE type | |
14486 | before building the type and calling set_die_type. | |
e71ec853 | 14487 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
14488 | possible before fetching more types to complete the current type. |
14489 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 14490 | |
f792889a | 14491 | static struct type * |
1c379e20 DJ |
14492 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
14493 | { | |
14494 | struct dwarf2_offset_and_type **slot, ofs; | |
673bfd45 DE |
14495 | struct objfile *objfile = cu->objfile; |
14496 | htab_t *type_hash_ptr; | |
1c379e20 | 14497 | |
b4ba55a1 JB |
14498 | /* For Ada types, make sure that the gnat-specific data is always |
14499 | initialized (if not already set). There are a few types where | |
14500 | we should not be doing so, because the type-specific area is | |
14501 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
14502 | where the type-specific area is used to store the floatformat). | |
14503 | But this is not a problem, because the gnat-specific information | |
14504 | is actually not needed for these types. */ | |
14505 | if (need_gnat_info (cu) | |
14506 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
14507 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
14508 | && !HAVE_GNAT_AUX_INFO (type)) | |
14509 | INIT_GNAT_SPECIFIC (type); | |
14510 | ||
673bfd45 DE |
14511 | if (cu->per_cu->from_debug_types) |
14512 | type_hash_ptr = &dwarf2_per_objfile->debug_types_type_hash; | |
14513 | else | |
14514 | type_hash_ptr = &dwarf2_per_objfile->debug_info_type_hash; | |
14515 | ||
14516 | if (*type_hash_ptr == NULL) | |
f792889a | 14517 | { |
673bfd45 DE |
14518 | *type_hash_ptr |
14519 | = htab_create_alloc_ex (127, | |
f792889a DJ |
14520 | offset_and_type_hash, |
14521 | offset_and_type_eq, | |
14522 | NULL, | |
673bfd45 | 14523 | &objfile->objfile_obstack, |
f792889a DJ |
14524 | hashtab_obstack_allocate, |
14525 | dummy_obstack_deallocate); | |
f792889a | 14526 | } |
1c379e20 DJ |
14527 | |
14528 | ofs.offset = die->offset; | |
14529 | ofs.type = type; | |
14530 | slot = (struct dwarf2_offset_and_type **) | |
673bfd45 | 14531 | htab_find_slot_with_hash (*type_hash_ptr, &ofs, ofs.offset, INSERT); |
7e314c57 JK |
14532 | if (*slot) |
14533 | complaint (&symfile_complaints, | |
14534 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
14535 | die->offset); | |
673bfd45 | 14536 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 14537 | **slot = ofs; |
f792889a | 14538 | return type; |
1c379e20 DJ |
14539 | } |
14540 | ||
673bfd45 DE |
14541 | /* Look up the type for the die at DIE_OFFSET in the appropriate type_hash |
14542 | table, or return NULL if the die does not have a saved type. */ | |
1c379e20 DJ |
14543 | |
14544 | static struct type * | |
673bfd45 DE |
14545 | get_die_type_at_offset (unsigned int offset, |
14546 | struct dwarf2_per_cu_data *per_cu) | |
1c379e20 DJ |
14547 | { |
14548 | struct dwarf2_offset_and_type *slot, ofs; | |
673bfd45 | 14549 | htab_t type_hash; |
f792889a | 14550 | |
673bfd45 DE |
14551 | if (per_cu->from_debug_types) |
14552 | type_hash = dwarf2_per_objfile->debug_types_type_hash; | |
14553 | else | |
14554 | type_hash = dwarf2_per_objfile->debug_info_type_hash; | |
f792889a DJ |
14555 | if (type_hash == NULL) |
14556 | return NULL; | |
1c379e20 | 14557 | |
673bfd45 | 14558 | ofs.offset = offset; |
1c379e20 DJ |
14559 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); |
14560 | if (slot) | |
14561 | return slot->type; | |
14562 | else | |
14563 | return NULL; | |
14564 | } | |
14565 | ||
673bfd45 DE |
14566 | /* Look up the type for DIE in the appropriate type_hash table, |
14567 | or return NULL if DIE does not have a saved type. */ | |
14568 | ||
14569 | static struct type * | |
14570 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
14571 | { | |
14572 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
14573 | } | |
14574 | ||
10b3939b DJ |
14575 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
14576 | ||
14577 | static void | |
14578 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
14579 | struct dwarf2_per_cu_data *ref_per_cu) | |
14580 | { | |
14581 | void **slot; | |
14582 | ||
14583 | if (cu->dependencies == NULL) | |
14584 | cu->dependencies | |
14585 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
14586 | NULL, &cu->comp_unit_obstack, | |
14587 | hashtab_obstack_allocate, | |
14588 | dummy_obstack_deallocate); | |
14589 | ||
14590 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
14591 | if (*slot == NULL) | |
14592 | *slot = ref_per_cu; | |
14593 | } | |
1c379e20 | 14594 | |
f504f079 DE |
14595 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
14596 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
14597 | cache that we must keep because we are keeping CU. */ |
14598 | ||
10b3939b DJ |
14599 | static int |
14600 | dwarf2_mark_helper (void **slot, void *data) | |
14601 | { | |
14602 | struct dwarf2_per_cu_data *per_cu; | |
14603 | ||
14604 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
14605 | if (per_cu->cu->mark) | |
14606 | return 1; | |
14607 | per_cu->cu->mark = 1; | |
14608 | ||
14609 | if (per_cu->cu->dependencies != NULL) | |
14610 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
14611 | ||
14612 | return 1; | |
14613 | } | |
14614 | ||
f504f079 DE |
14615 | /* Set the mark field in CU and in every other compilation unit in the |
14616 | cache that we must keep because we are keeping CU. */ | |
14617 | ||
ae038cb0 DJ |
14618 | static void |
14619 | dwarf2_mark (struct dwarf2_cu *cu) | |
14620 | { | |
14621 | if (cu->mark) | |
14622 | return; | |
14623 | cu->mark = 1; | |
10b3939b DJ |
14624 | if (cu->dependencies != NULL) |
14625 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
14626 | } |
14627 | ||
14628 | static void | |
14629 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
14630 | { | |
14631 | while (per_cu) | |
14632 | { | |
14633 | per_cu->cu->mark = 0; | |
14634 | per_cu = per_cu->cu->read_in_chain; | |
14635 | } | |
72bf9492 DJ |
14636 | } |
14637 | ||
72bf9492 DJ |
14638 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
14639 | is its offset in .debug_info for this objfile. */ | |
14640 | ||
14641 | static hashval_t | |
14642 | partial_die_hash (const void *item) | |
14643 | { | |
14644 | const struct partial_die_info *part_die = item; | |
9a619af0 | 14645 | |
72bf9492 DJ |
14646 | return part_die->offset; |
14647 | } | |
14648 | ||
14649 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
14650 | are equal if they have the same offset. */ | |
14651 | ||
14652 | static int | |
14653 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
14654 | { | |
14655 | const struct partial_die_info *part_die_lhs = item_lhs; | |
14656 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 14657 | |
72bf9492 DJ |
14658 | return part_die_lhs->offset == part_die_rhs->offset; |
14659 | } | |
14660 | ||
ae038cb0 DJ |
14661 | static struct cmd_list_element *set_dwarf2_cmdlist; |
14662 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
14663 | ||
14664 | static void | |
14665 | set_dwarf2_cmd (char *args, int from_tty) | |
14666 | { | |
14667 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
14668 | } | |
14669 | ||
14670 | static void | |
14671 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 14672 | { |
ae038cb0 DJ |
14673 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
14674 | } | |
14675 | ||
dce234bc PP |
14676 | /* If section described by INFO was mmapped, munmap it now. */ |
14677 | ||
14678 | static void | |
14679 | munmap_section_buffer (struct dwarf2_section_info *info) | |
14680 | { | |
14681 | if (info->was_mmapped) | |
14682 | { | |
14683 | #ifdef HAVE_MMAP | |
14684 | intptr_t begin = (intptr_t) info->buffer; | |
14685 | intptr_t map_begin = begin & ~(pagesize - 1); | |
14686 | size_t map_length = info->size + begin - map_begin; | |
9a619af0 | 14687 | |
dce234bc PP |
14688 | gdb_assert (munmap ((void *) map_begin, map_length) == 0); |
14689 | #else | |
14690 | /* Without HAVE_MMAP, we should never be here to begin with. */ | |
f3574227 | 14691 | gdb_assert_not_reached ("no mmap support"); |
dce234bc PP |
14692 | #endif |
14693 | } | |
14694 | } | |
14695 | ||
14696 | /* munmap debug sections for OBJFILE, if necessary. */ | |
14697 | ||
14698 | static void | |
c1bd65d0 | 14699 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
14700 | { |
14701 | struct dwarf2_per_objfile *data = d; | |
9a619af0 | 14702 | |
16be1145 DE |
14703 | /* This is sorted according to the order they're defined in to make it easier |
14704 | to keep in sync. */ | |
dce234bc PP |
14705 | munmap_section_buffer (&data->info); |
14706 | munmap_section_buffer (&data->abbrev); | |
14707 | munmap_section_buffer (&data->line); | |
16be1145 | 14708 | munmap_section_buffer (&data->loc); |
dce234bc | 14709 | munmap_section_buffer (&data->macinfo); |
16be1145 | 14710 | munmap_section_buffer (&data->str); |
dce234bc | 14711 | munmap_section_buffer (&data->ranges); |
16be1145 | 14712 | munmap_section_buffer (&data->types); |
dce234bc PP |
14713 | munmap_section_buffer (&data->frame); |
14714 | munmap_section_buffer (&data->eh_frame); | |
9291a0cd TT |
14715 | munmap_section_buffer (&data->gdb_index); |
14716 | } | |
14717 | ||
14718 | \f | |
14719 | ||
14720 | /* The contents of the hash table we create when building the string | |
14721 | table. */ | |
14722 | struct strtab_entry | |
14723 | { | |
14724 | offset_type offset; | |
14725 | const char *str; | |
14726 | }; | |
14727 | ||
14728 | /* Hash function for a strtab_entry. */ | |
14729 | static hashval_t | |
14730 | hash_strtab_entry (const void *e) | |
14731 | { | |
14732 | const struct strtab_entry *entry = e; | |
14733 | return mapped_index_string_hash (entry->str); | |
14734 | } | |
14735 | ||
14736 | /* Equality function for a strtab_entry. */ | |
14737 | static int | |
14738 | eq_strtab_entry (const void *a, const void *b) | |
14739 | { | |
14740 | const struct strtab_entry *ea = a; | |
14741 | const struct strtab_entry *eb = b; | |
14742 | return !strcmp (ea->str, eb->str); | |
14743 | } | |
14744 | ||
14745 | /* Create a strtab_entry hash table. */ | |
14746 | static htab_t | |
14747 | create_strtab (void) | |
14748 | { | |
14749 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
14750 | xfree, xcalloc, xfree); | |
14751 | } | |
14752 | ||
14753 | /* Add a string to the constant pool. Return the string's offset in | |
14754 | host order. */ | |
14755 | static offset_type | |
14756 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
14757 | { | |
14758 | void **slot; | |
14759 | struct strtab_entry entry; | |
14760 | struct strtab_entry *result; | |
14761 | ||
14762 | entry.str = str; | |
14763 | slot = htab_find_slot (table, &entry, INSERT); | |
14764 | if (*slot) | |
14765 | result = *slot; | |
14766 | else | |
14767 | { | |
14768 | result = XNEW (struct strtab_entry); | |
14769 | result->offset = obstack_object_size (cpool); | |
14770 | result->str = str; | |
14771 | obstack_grow_str0 (cpool, str); | |
14772 | *slot = result; | |
14773 | } | |
14774 | return result->offset; | |
14775 | } | |
14776 | ||
14777 | /* An entry in the symbol table. */ | |
14778 | struct symtab_index_entry | |
14779 | { | |
14780 | /* The name of the symbol. */ | |
14781 | const char *name; | |
14782 | /* The offset of the name in the constant pool. */ | |
14783 | offset_type index_offset; | |
14784 | /* A sorted vector of the indices of all the CUs that hold an object | |
14785 | of this name. */ | |
14786 | VEC (offset_type) *cu_indices; | |
14787 | }; | |
14788 | ||
14789 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
14790 | struct mapped_symtab | |
14791 | { | |
14792 | offset_type n_elements; | |
14793 | offset_type size; | |
14794 | struct symtab_index_entry **data; | |
14795 | }; | |
14796 | ||
14797 | /* Hash function for a symtab_index_entry. */ | |
14798 | static hashval_t | |
14799 | hash_symtab_entry (const void *e) | |
14800 | { | |
14801 | const struct symtab_index_entry *entry = e; | |
14802 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
14803 | sizeof (offset_type) * VEC_length (offset_type, | |
14804 | entry->cu_indices), | |
14805 | 0); | |
14806 | } | |
14807 | ||
14808 | /* Equality function for a symtab_index_entry. */ | |
14809 | static int | |
14810 | eq_symtab_entry (const void *a, const void *b) | |
14811 | { | |
14812 | const struct symtab_index_entry *ea = a; | |
14813 | const struct symtab_index_entry *eb = b; | |
14814 | int len = VEC_length (offset_type, ea->cu_indices); | |
14815 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
14816 | return 0; | |
14817 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
14818 | VEC_address (offset_type, eb->cu_indices), | |
14819 | sizeof (offset_type) * len); | |
14820 | } | |
14821 | ||
14822 | /* Destroy a symtab_index_entry. */ | |
14823 | static void | |
14824 | delete_symtab_entry (void *p) | |
14825 | { | |
14826 | struct symtab_index_entry *entry = p; | |
14827 | VEC_free (offset_type, entry->cu_indices); | |
14828 | xfree (entry); | |
14829 | } | |
14830 | ||
14831 | /* Create a hash table holding symtab_index_entry objects. */ | |
14832 | static htab_t | |
14833 | create_index_table (void) | |
14834 | { | |
14835 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
14836 | delete_symtab_entry, xcalloc, xfree); | |
14837 | } | |
14838 | ||
14839 | /* Create a new mapped symtab object. */ | |
14840 | static struct mapped_symtab * | |
14841 | create_mapped_symtab (void) | |
14842 | { | |
14843 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
14844 | symtab->n_elements = 0; | |
14845 | symtab->size = 1024; | |
14846 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
14847 | return symtab; | |
14848 | } | |
14849 | ||
14850 | /* Destroy a mapped_symtab. */ | |
14851 | static void | |
14852 | cleanup_mapped_symtab (void *p) | |
14853 | { | |
14854 | struct mapped_symtab *symtab = p; | |
14855 | /* The contents of the array are freed when the other hash table is | |
14856 | destroyed. */ | |
14857 | xfree (symtab->data); | |
14858 | xfree (symtab); | |
14859 | } | |
14860 | ||
14861 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
14862 | the slot. */ | |
14863 | static struct symtab_index_entry ** | |
14864 | find_slot (struct mapped_symtab *symtab, const char *name) | |
14865 | { | |
14866 | offset_type index, step, hash = mapped_index_string_hash (name); | |
14867 | ||
14868 | index = hash & (symtab->size - 1); | |
14869 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
14870 | ||
14871 | for (;;) | |
14872 | { | |
14873 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
14874 | return &symtab->data[index]; | |
14875 | index = (index + step) & (symtab->size - 1); | |
14876 | } | |
14877 | } | |
14878 | ||
14879 | /* Expand SYMTAB's hash table. */ | |
14880 | static void | |
14881 | hash_expand (struct mapped_symtab *symtab) | |
14882 | { | |
14883 | offset_type old_size = symtab->size; | |
14884 | offset_type i; | |
14885 | struct symtab_index_entry **old_entries = symtab->data; | |
14886 | ||
14887 | symtab->size *= 2; | |
14888 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
14889 | ||
14890 | for (i = 0; i < old_size; ++i) | |
14891 | { | |
14892 | if (old_entries[i]) | |
14893 | { | |
14894 | struct symtab_index_entry **slot = find_slot (symtab, | |
14895 | old_entries[i]->name); | |
14896 | *slot = old_entries[i]; | |
14897 | } | |
14898 | } | |
14899 | ||
14900 | xfree (old_entries); | |
14901 | } | |
14902 | ||
14903 | /* Add an entry to SYMTAB. NAME is the name of the symbol. CU_INDEX | |
14904 | is the index of the CU in which the symbol appears. */ | |
14905 | static void | |
14906 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
14907 | offset_type cu_index) | |
14908 | { | |
14909 | struct symtab_index_entry **slot; | |
14910 | ||
14911 | ++symtab->n_elements; | |
14912 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
14913 | hash_expand (symtab); | |
14914 | ||
14915 | slot = find_slot (symtab, name); | |
14916 | if (!*slot) | |
14917 | { | |
14918 | *slot = XNEW (struct symtab_index_entry); | |
14919 | (*slot)->name = name; | |
14920 | (*slot)->cu_indices = NULL; | |
14921 | } | |
14922 | /* Don't push an index twice. Due to how we add entries we only | |
14923 | have to check the last one. */ | |
14924 | if (VEC_empty (offset_type, (*slot)->cu_indices) | |
14925 | || VEC_length (offset_type, (*slot)->cu_indices) != cu_index) | |
14926 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index); | |
14927 | } | |
14928 | ||
14929 | /* Add a vector of indices to the constant pool. */ | |
14930 | static offset_type | |
14931 | add_indices_to_cpool (htab_t index_table, struct obstack *cpool, | |
14932 | struct symtab_index_entry *entry) | |
14933 | { | |
14934 | void **slot; | |
14935 | ||
14936 | slot = htab_find_slot (index_table, entry, INSERT); | |
14937 | if (!*slot) | |
14938 | { | |
14939 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
14940 | offset_type val = MAYBE_SWAP (len); | |
14941 | offset_type iter; | |
14942 | int i; | |
14943 | ||
14944 | *slot = entry; | |
14945 | entry->index_offset = obstack_object_size (cpool); | |
14946 | ||
14947 | obstack_grow (cpool, &val, sizeof (val)); | |
14948 | for (i = 0; | |
14949 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
14950 | ++i) | |
14951 | { | |
14952 | val = MAYBE_SWAP (iter); | |
14953 | obstack_grow (cpool, &val, sizeof (val)); | |
14954 | } | |
14955 | } | |
14956 | else | |
14957 | { | |
14958 | struct symtab_index_entry *old_entry = *slot; | |
14959 | entry->index_offset = old_entry->index_offset; | |
14960 | entry = old_entry; | |
14961 | } | |
14962 | return entry->index_offset; | |
14963 | } | |
14964 | ||
14965 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
14966 | constant pool entries going into the obstack CPOOL. */ | |
14967 | static void | |
14968 | write_hash_table (struct mapped_symtab *symtab, | |
14969 | struct obstack *output, struct obstack *cpool) | |
14970 | { | |
14971 | offset_type i; | |
14972 | htab_t index_table; | |
14973 | htab_t str_table; | |
14974 | ||
14975 | index_table = create_index_table (); | |
14976 | str_table = create_strtab (); | |
14977 | /* We add all the index vectors to the constant pool first, to | |
14978 | ensure alignment is ok. */ | |
14979 | for (i = 0; i < symtab->size; ++i) | |
14980 | { | |
14981 | if (symtab->data[i]) | |
14982 | add_indices_to_cpool (index_table, cpool, symtab->data[i]); | |
14983 | } | |
14984 | ||
14985 | /* Now write out the hash table. */ | |
14986 | for (i = 0; i < symtab->size; ++i) | |
14987 | { | |
14988 | offset_type str_off, vec_off; | |
14989 | ||
14990 | if (symtab->data[i]) | |
14991 | { | |
14992 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
14993 | vec_off = symtab->data[i]->index_offset; | |
14994 | } | |
14995 | else | |
14996 | { | |
14997 | /* While 0 is a valid constant pool index, it is not valid | |
14998 | to have 0 for both offsets. */ | |
14999 | str_off = 0; | |
15000 | vec_off = 0; | |
15001 | } | |
15002 | ||
15003 | str_off = MAYBE_SWAP (str_off); | |
15004 | vec_off = MAYBE_SWAP (vec_off); | |
15005 | ||
15006 | obstack_grow (output, &str_off, sizeof (str_off)); | |
15007 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
15008 | } | |
15009 | ||
15010 | htab_delete (str_table); | |
15011 | htab_delete (index_table); | |
15012 | } | |
15013 | ||
15014 | /* Write an address entry to ADDR_OBSTACK. The addresses are taken | |
15015 | from PST; CU_INDEX is the index of the CU in the vector of all | |
15016 | CUs. */ | |
15017 | static void | |
15018 | add_address_entry (struct objfile *objfile, | |
15019 | struct obstack *addr_obstack, struct partial_symtab *pst, | |
15020 | unsigned int cu_index) | |
15021 | { | |
15022 | offset_type offset; | |
15023 | char addr[8]; | |
15024 | CORE_ADDR baseaddr; | |
15025 | ||
1fd400ff TT |
15026 | /* Don't bother recording empty ranges. */ |
15027 | if (pst->textlow == pst->texthigh) | |
15028 | return; | |
15029 | ||
9291a0cd TT |
15030 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
15031 | ||
15032 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, pst->textlow - baseaddr); | |
15033 | obstack_grow (addr_obstack, addr, 8); | |
15034 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, pst->texthigh - baseaddr); | |
15035 | obstack_grow (addr_obstack, addr, 8); | |
15036 | offset = MAYBE_SWAP (cu_index); | |
15037 | obstack_grow (addr_obstack, &offset, sizeof (offset_type)); | |
15038 | } | |
15039 | ||
15040 | /* Add a list of partial symbols to SYMTAB. */ | |
15041 | static void | |
15042 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 15043 | htab_t psyms_seen, |
9291a0cd TT |
15044 | struct partial_symbol **psymp, |
15045 | int count, | |
987d643c TT |
15046 | offset_type cu_index, |
15047 | int is_static) | |
9291a0cd TT |
15048 | { |
15049 | for (; count-- > 0; ++psymp) | |
15050 | { | |
987d643c TT |
15051 | void **slot, *lookup; |
15052 | ||
9291a0cd TT |
15053 | if (SYMBOL_LANGUAGE (*psymp) == language_ada) |
15054 | error (_("Ada is not currently supported by the index")); | |
987d643c TT |
15055 | |
15056 | /* We only want to add a given psymbol once. However, we also | |
15057 | want to account for whether it is global or static. So, we | |
15058 | may add it twice, using slightly different values. */ | |
15059 | if (is_static) | |
15060 | { | |
15061 | uintptr_t val = 1 | (uintptr_t) *psymp; | |
15062 | ||
15063 | lookup = (void *) val; | |
15064 | } | |
15065 | else | |
15066 | lookup = *psymp; | |
15067 | ||
15068 | /* Only add a given psymbol once. */ | |
15069 | slot = htab_find_slot (psyms_seen, lookup, INSERT); | |
15070 | if (!*slot) | |
15071 | { | |
15072 | *slot = lookup; | |
15073 | add_index_entry (symtab, SYMBOL_NATURAL_NAME (*psymp), cu_index); | |
15074 | } | |
9291a0cd TT |
15075 | } |
15076 | } | |
15077 | ||
15078 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
15079 | exception if there is an error. */ | |
15080 | static void | |
15081 | write_obstack (FILE *file, struct obstack *obstack) | |
15082 | { | |
15083 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
15084 | file) | |
15085 | != obstack_object_size (obstack)) | |
15086 | error (_("couldn't data write to file")); | |
15087 | } | |
15088 | ||
15089 | /* Unlink a file if the argument is not NULL. */ | |
15090 | static void | |
15091 | unlink_if_set (void *p) | |
15092 | { | |
15093 | char **filename = p; | |
15094 | if (*filename) | |
15095 | unlink (*filename); | |
15096 | } | |
15097 | ||
1fd400ff TT |
15098 | /* A helper struct used when iterating over debug_types. */ |
15099 | struct signatured_type_index_data | |
15100 | { | |
15101 | struct objfile *objfile; | |
15102 | struct mapped_symtab *symtab; | |
15103 | struct obstack *types_list; | |
987d643c | 15104 | htab_t psyms_seen; |
1fd400ff TT |
15105 | int cu_index; |
15106 | }; | |
15107 | ||
15108 | /* A helper function that writes a single signatured_type to an | |
15109 | obstack. */ | |
15110 | static int | |
15111 | write_one_signatured_type (void **slot, void *d) | |
15112 | { | |
15113 | struct signatured_type_index_data *info = d; | |
15114 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
e254ef6a DE |
15115 | struct dwarf2_per_cu_data *per_cu = &entry->per_cu; |
15116 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
1fd400ff TT |
15117 | gdb_byte val[8]; |
15118 | ||
15119 | write_psymbols (info->symtab, | |
987d643c | 15120 | info->psyms_seen, |
1fd400ff | 15121 | info->objfile->global_psymbols.list + psymtab->globals_offset, |
987d643c TT |
15122 | psymtab->n_global_syms, info->cu_index, |
15123 | 0); | |
1fd400ff | 15124 | write_psymbols (info->symtab, |
987d643c | 15125 | info->psyms_seen, |
1fd400ff | 15126 | info->objfile->static_psymbols.list + psymtab->statics_offset, |
987d643c TT |
15127 | psymtab->n_static_syms, info->cu_index, |
15128 | 1); | |
1fd400ff TT |
15129 | |
15130 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->offset); | |
15131 | obstack_grow (info->types_list, val, 8); | |
15132 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->type_offset); | |
15133 | obstack_grow (info->types_list, val, 8); | |
15134 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
15135 | obstack_grow (info->types_list, val, 8); | |
15136 | ||
15137 | ++info->cu_index; | |
15138 | ||
15139 | return 1; | |
15140 | } | |
15141 | ||
987d643c TT |
15142 | /* A cleanup function for an htab_t. */ |
15143 | ||
15144 | static void | |
15145 | cleanup_htab (void *arg) | |
15146 | { | |
15147 | htab_delete (arg); | |
15148 | } | |
15149 | ||
9291a0cd TT |
15150 | /* Create an index file for OBJFILE in the directory DIR. */ |
15151 | static void | |
15152 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
15153 | { | |
15154 | struct cleanup *cleanup; | |
15155 | char *filename, *cleanup_filename; | |
1fd400ff TT |
15156 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
15157 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
15158 | int i; |
15159 | FILE *out_file; | |
15160 | struct mapped_symtab *symtab; | |
15161 | offset_type val, size_of_contents, total_len; | |
15162 | struct stat st; | |
15163 | char buf[8]; | |
987d643c | 15164 | htab_t psyms_seen; |
9291a0cd TT |
15165 | |
15166 | if (!objfile->psymtabs) | |
15167 | return; | |
15168 | if (dwarf2_per_objfile->using_index) | |
15169 | error (_("Cannot use an index to create the index")); | |
15170 | ||
15171 | if (stat (objfile->name, &st) < 0) | |
15172 | perror_with_name (_("Could not stat")); | |
15173 | ||
15174 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
15175 | INDEX_SUFFIX, (char *) NULL); | |
15176 | cleanup = make_cleanup (xfree, filename); | |
15177 | ||
15178 | out_file = fopen (filename, "wb"); | |
15179 | if (!out_file) | |
15180 | error (_("Can't open `%s' for writing"), filename); | |
15181 | ||
15182 | cleanup_filename = filename; | |
15183 | make_cleanup (unlink_if_set, &cleanup_filename); | |
15184 | ||
15185 | symtab = create_mapped_symtab (); | |
15186 | make_cleanup (cleanup_mapped_symtab, symtab); | |
15187 | ||
15188 | obstack_init (&addr_obstack); | |
15189 | make_cleanup_obstack_free (&addr_obstack); | |
15190 | ||
15191 | obstack_init (&cu_list); | |
15192 | make_cleanup_obstack_free (&cu_list); | |
15193 | ||
1fd400ff TT |
15194 | obstack_init (&types_cu_list); |
15195 | make_cleanup_obstack_free (&types_cu_list); | |
15196 | ||
987d643c TT |
15197 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
15198 | NULL, xcalloc, xfree); | |
15199 | make_cleanup (cleanup_htab, psyms_seen); | |
15200 | ||
1fd400ff TT |
15201 | /* The list is already sorted, so we don't need to do additional |
15202 | work here. Also, the debug_types entries do not appear in | |
15203 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
15204 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
15205 | { | |
e254ef6a DE |
15206 | struct dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->all_comp_units[i]; |
15207 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
9291a0cd TT |
15208 | gdb_byte val[8]; |
15209 | ||
15210 | write_psymbols (symtab, | |
987d643c | 15211 | psyms_seen, |
9291a0cd | 15212 | objfile->global_psymbols.list + psymtab->globals_offset, |
987d643c TT |
15213 | psymtab->n_global_syms, i, |
15214 | 0); | |
9291a0cd | 15215 | write_psymbols (symtab, |
987d643c | 15216 | psyms_seen, |
9291a0cd | 15217 | objfile->static_psymbols.list + psymtab->statics_offset, |
987d643c TT |
15218 | psymtab->n_static_syms, i, |
15219 | 1); | |
9291a0cd TT |
15220 | |
15221 | add_address_entry (objfile, &addr_obstack, psymtab, i); | |
15222 | ||
e254ef6a | 15223 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->offset); |
9291a0cd | 15224 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 15225 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
15226 | obstack_grow (&cu_list, val, 8); |
15227 | } | |
15228 | ||
1fd400ff TT |
15229 | /* Write out the .debug_type entries, if any. */ |
15230 | if (dwarf2_per_objfile->signatured_types) | |
15231 | { | |
15232 | struct signatured_type_index_data sig_data; | |
15233 | ||
15234 | sig_data.objfile = objfile; | |
15235 | sig_data.symtab = symtab; | |
15236 | sig_data.types_list = &types_cu_list; | |
987d643c | 15237 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
15238 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
15239 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
15240 | write_one_signatured_type, &sig_data); | |
15241 | } | |
15242 | ||
9291a0cd TT |
15243 | obstack_init (&constant_pool); |
15244 | make_cleanup_obstack_free (&constant_pool); | |
15245 | obstack_init (&symtab_obstack); | |
15246 | make_cleanup_obstack_free (&symtab_obstack); | |
15247 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
15248 | ||
15249 | obstack_init (&contents); | |
15250 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 15251 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
15252 | total_len = size_of_contents; |
15253 | ||
15254 | /* The version number. */ | |
987d643c | 15255 | val = MAYBE_SWAP (3); |
9291a0cd TT |
15256 | obstack_grow (&contents, &val, sizeof (val)); |
15257 | ||
15258 | /* The offset of the CU list from the start of the file. */ | |
15259 | val = MAYBE_SWAP (total_len); | |
15260 | obstack_grow (&contents, &val, sizeof (val)); | |
15261 | total_len += obstack_object_size (&cu_list); | |
15262 | ||
1fd400ff TT |
15263 | /* The offset of the types CU list from the start of the file. */ |
15264 | val = MAYBE_SWAP (total_len); | |
15265 | obstack_grow (&contents, &val, sizeof (val)); | |
15266 | total_len += obstack_object_size (&types_cu_list); | |
15267 | ||
9291a0cd TT |
15268 | /* The offset of the address table from the start of the file. */ |
15269 | val = MAYBE_SWAP (total_len); | |
15270 | obstack_grow (&contents, &val, sizeof (val)); | |
15271 | total_len += obstack_object_size (&addr_obstack); | |
15272 | ||
15273 | /* The offset of the symbol table from the start of the file. */ | |
15274 | val = MAYBE_SWAP (total_len); | |
15275 | obstack_grow (&contents, &val, sizeof (val)); | |
15276 | total_len += obstack_object_size (&symtab_obstack); | |
15277 | ||
15278 | /* The offset of the constant pool from the start of the file. */ | |
15279 | val = MAYBE_SWAP (total_len); | |
15280 | obstack_grow (&contents, &val, sizeof (val)); | |
15281 | total_len += obstack_object_size (&constant_pool); | |
15282 | ||
15283 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
15284 | ||
15285 | write_obstack (out_file, &contents); | |
15286 | write_obstack (out_file, &cu_list); | |
1fd400ff | 15287 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
15288 | write_obstack (out_file, &addr_obstack); |
15289 | write_obstack (out_file, &symtab_obstack); | |
15290 | write_obstack (out_file, &constant_pool); | |
15291 | ||
15292 | fclose (out_file); | |
15293 | ||
15294 | /* We want to keep the file, so we set cleanup_filename to NULL | |
15295 | here. See unlink_if_set. */ | |
15296 | cleanup_filename = NULL; | |
15297 | ||
15298 | do_cleanups (cleanup); | |
15299 | } | |
15300 | ||
15301 | /* The mapped index file format is designed to be directly mmap()able | |
15302 | on any architecture. In most cases, a datum is represented using a | |
15303 | little-endian 32-bit integer value, called an offset_type. Big | |
15304 | endian machines must byte-swap the values before using them. | |
15305 | Exceptions to this rule are noted. The data is laid out such that | |
15306 | alignment is always respected. | |
15307 | ||
15308 | A mapped index consists of several sections. | |
15309 | ||
15310 | 1. The file header. This is a sequence of values, of offset_type | |
15311 | unless otherwise noted: | |
987d643c TT |
15312 | |
15313 | [0] The version number, currently 3. Versions 1 and 2 are | |
15314 | obsolete. | |
9291a0cd | 15315 | [1] The offset, from the start of the file, of the CU list. |
987d643c TT |
15316 | [2] The offset, from the start of the file, of the types CU list. |
15317 | Note that this section can be empty, in which case this offset will | |
15318 | be equal to the next offset. | |
15319 | [3] The offset, from the start of the file, of the address section. | |
15320 | [4] The offset, from the start of the file, of the symbol table. | |
15321 | [5] The offset, from the start of the file, of the constant pool. | |
9291a0cd TT |
15322 | |
15323 | 2. The CU list. This is a sequence of pairs of 64-bit | |
1fd400ff TT |
15324 | little-endian values, sorted by the CU offset. The first element |
15325 | in each pair is the offset of a CU in the .debug_info section. The | |
15326 | second element in each pair is the length of that CU. References | |
15327 | to a CU elsewhere in the map are done using a CU index, which is | |
15328 | just the 0-based index into this table. Note that if there are | |
15329 | type CUs, then conceptually CUs and type CUs form a single list for | |
15330 | the purposes of CU indices. | |
15331 | ||
987d643c TT |
15332 | 3. The types CU list. This is a sequence of triplets of 64-bit |
15333 | little-endian values. In a triplet, the first value is the CU | |
15334 | offset, the second value is the type offset in the CU, and the | |
15335 | third value is the type signature. The types CU list is not | |
15336 | sorted. | |
9291a0cd | 15337 | |
987d643c | 15338 | 4. The address section. The address section consists of a sequence |
9291a0cd TT |
15339 | of address entries. Each address entry has three elements. |
15340 | [0] The low address. This is a 64-bit little-endian value. | |
15341 | [1] The high address. This is a 64-bit little-endian value. | |
15342 | [2] The CU index. This is an offset_type value. | |
15343 | ||
987d643c | 15344 | 5. The symbol table. This is a hash table. The size of the hash |
9291a0cd TT |
15345 | table is always a power of 2. The initial hash and the step are |
15346 | currently defined by the `find_slot' function. | |
15347 | ||
15348 | Each slot in the hash table consists of a pair of offset_type | |
15349 | values. The first value is the offset of the symbol's name in the | |
15350 | constant pool. The second value is the offset of the CU vector in | |
15351 | the constant pool. | |
15352 | ||
15353 | If both values are 0, then this slot in the hash table is empty. | |
15354 | This is ok because while 0 is a valid constant pool index, it | |
15355 | cannot be a valid index for both a string and a CU vector. | |
15356 | ||
15357 | A string in the constant pool is stored as a \0-terminated string, | |
15358 | as you'd expect. | |
15359 | ||
15360 | A CU vector in the constant pool is a sequence of offset_type | |
15361 | values. The first value is the number of CU indices in the vector. | |
15362 | Each subsequent value is the index of a CU in the CU list. This | |
15363 | element in the hash table is used to indicate which CUs define the | |
15364 | symbol. | |
15365 | ||
987d643c | 15366 | 6. The constant pool. This is simply a bunch of bytes. It is |
9291a0cd TT |
15367 | organized so that alignment is correct: CU vectors are stored |
15368 | first, followed by strings. */ | |
15369 | static void | |
15370 | save_gdb_index_command (char *arg, int from_tty) | |
15371 | { | |
15372 | struct objfile *objfile; | |
15373 | ||
15374 | if (!arg || !*arg) | |
96d19272 | 15375 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
15376 | |
15377 | ALL_OBJFILES (objfile) | |
15378 | { | |
15379 | struct stat st; | |
15380 | ||
15381 | /* If the objfile does not correspond to an actual file, skip it. */ | |
15382 | if (stat (objfile->name, &st) < 0) | |
15383 | continue; | |
15384 | ||
15385 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
15386 | if (dwarf2_per_objfile) | |
15387 | { | |
15388 | volatile struct gdb_exception except; | |
15389 | ||
15390 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
15391 | { | |
15392 | write_psymtabs_to_index (objfile, arg); | |
15393 | } | |
15394 | if (except.reason < 0) | |
15395 | exception_fprintf (gdb_stderr, except, | |
15396 | _("Error while writing index for `%s': "), | |
15397 | objfile->name); | |
15398 | } | |
15399 | } | |
dce234bc PP |
15400 | } |
15401 | ||
9291a0cd TT |
15402 | \f |
15403 | ||
9eae7c52 TT |
15404 | int dwarf2_always_disassemble; |
15405 | ||
15406 | static void | |
15407 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
15408 | struct cmd_list_element *c, const char *value) | |
15409 | { | |
15410 | fprintf_filtered (file, _("\ | |
15411 | Whether to always disassemble DWARF expressions is %s.\n"), | |
15412 | value); | |
15413 | } | |
15414 | ||
6502dd73 DJ |
15415 | void _initialize_dwarf2_read (void); |
15416 | ||
15417 | void | |
15418 | _initialize_dwarf2_read (void) | |
15419 | { | |
96d19272 JK |
15420 | struct cmd_list_element *c; |
15421 | ||
dce234bc | 15422 | dwarf2_objfile_data_key |
c1bd65d0 | 15423 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 15424 | |
1bedd215 AC |
15425 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
15426 | Set DWARF 2 specific variables.\n\ | |
15427 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
15428 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
15429 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
15430 | ||
1bedd215 AC |
15431 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
15432 | Show DWARF 2 specific variables\n\ | |
15433 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
15434 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
15435 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
15436 | ||
15437 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
15438 | &dwarf2_max_cache_age, _("\ |
15439 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
15440 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
15441 | A higher limit means that cached compilation units will be stored\n\ | |
15442 | in memory longer, and more total memory will be used. Zero disables\n\ | |
15443 | caching, which can slow down startup."), | |
2c5b56ce | 15444 | NULL, |
920d2a44 | 15445 | show_dwarf2_max_cache_age, |
2c5b56ce | 15446 | &set_dwarf2_cmdlist, |
ae038cb0 | 15447 | &show_dwarf2_cmdlist); |
d97bc12b | 15448 | |
9eae7c52 TT |
15449 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
15450 | &dwarf2_always_disassemble, _("\ | |
15451 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
15452 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
15453 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
15454 | syntax. When disabled, expressions will be printed in a more\n\ | |
15455 | conversational style, when possible."), | |
15456 | NULL, | |
15457 | show_dwarf2_always_disassemble, | |
15458 | &set_dwarf2_cmdlist, | |
15459 | &show_dwarf2_cmdlist); | |
15460 | ||
d97bc12b DE |
15461 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
15462 | Set debugging of the dwarf2 DIE reader."), _("\ | |
15463 | Show debugging of the dwarf2 DIE reader."), _("\ | |
15464 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
15465 | The value is the maximum depth to print."), | |
15466 | NULL, | |
15467 | NULL, | |
15468 | &setdebuglist, &showdebuglist); | |
9291a0cd | 15469 | |
96d19272 JK |
15470 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
15471 | _("Save a .gdb-index file"), | |
15472 | &save_cmdlist); | |
15473 | set_cmd_completer (c, filename_completer); | |
6502dd73 | 15474 | } |