Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
6aba47ca | 3 | Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
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; | |
3876f04e DE |
157 | /* The symbol table, implemented as a hash table. */ |
158 | const offset_type *symbol_table; | |
9291a0cd | 159 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 160 | offset_type symbol_table_slots; |
9291a0cd TT |
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 | 1009 | |
72b9f47f | 1010 | static void dwarf_decode_lines (struct line_header *, const char *, bfd *, |
aaa75496 | 1011 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 1012 | |
72b9f47f | 1013 | static void dwarf2_start_subfile (char *, const char *, const 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. */ | |
2fdf6df6 | 1641 | |
9291a0cd TT |
1642 | static void |
1643 | dw2_do_instantiate_symtab (struct objfile *objfile, | |
1644 | struct dwarf2_per_cu_data *per_cu) | |
1645 | { | |
1646 | struct cleanup *back_to; | |
1647 | ||
1648 | back_to = make_cleanup (dwarf2_release_queue, NULL); | |
1649 | ||
1650 | queue_comp_unit (per_cu, objfile); | |
1651 | ||
1652 | if (per_cu->from_debug_types) | |
1653 | read_signatured_type_at_offset (objfile, per_cu->offset); | |
1654 | else | |
1655 | load_full_comp_unit (per_cu, objfile); | |
1656 | ||
1657 | process_queue (objfile); | |
1658 | ||
1659 | /* Age the cache, releasing compilation units that have not | |
1660 | been used recently. */ | |
1661 | age_cached_comp_units (); | |
1662 | ||
1663 | do_cleanups (back_to); | |
1664 | } | |
1665 | ||
1666 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
1667 | the objfile from which this CU came. Returns the resulting symbol | |
1668 | table. */ | |
2fdf6df6 | 1669 | |
9291a0cd TT |
1670 | static struct symtab * |
1671 | dw2_instantiate_symtab (struct objfile *objfile, | |
1672 | struct dwarf2_per_cu_data *per_cu) | |
1673 | { | |
1674 | if (!per_cu->v.quick->symtab) | |
1675 | { | |
1676 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
1677 | increment_reading_symtab (); | |
1678 | dw2_do_instantiate_symtab (objfile, per_cu); | |
1679 | do_cleanups (back_to); | |
1680 | } | |
1681 | return per_cu->v.quick->symtab; | |
1682 | } | |
1683 | ||
1fd400ff | 1684 | /* Return the CU given its index. */ |
2fdf6df6 | 1685 | |
1fd400ff TT |
1686 | static struct dwarf2_per_cu_data * |
1687 | dw2_get_cu (int index) | |
1688 | { | |
1689 | if (index >= dwarf2_per_objfile->n_comp_units) | |
1690 | { | |
1691 | index -= dwarf2_per_objfile->n_comp_units; | |
1692 | return dwarf2_per_objfile->type_comp_units[index]; | |
1693 | } | |
1694 | return dwarf2_per_objfile->all_comp_units[index]; | |
1695 | } | |
1696 | ||
9291a0cd TT |
1697 | /* A helper function that knows how to read a 64-bit value in a way |
1698 | that doesn't make gdb die. Returns 1 if the conversion went ok, 0 | |
1699 | otherwise. */ | |
2fdf6df6 | 1700 | |
9291a0cd TT |
1701 | static int |
1702 | extract_cu_value (const char *bytes, ULONGEST *result) | |
1703 | { | |
1704 | if (sizeof (ULONGEST) < 8) | |
1705 | { | |
1706 | int i; | |
1707 | ||
1708 | /* Ignore the upper 4 bytes if they are all zero. */ | |
1709 | for (i = 0; i < 4; ++i) | |
1710 | if (bytes[i + 4] != 0) | |
1711 | return 0; | |
1712 | ||
1713 | *result = extract_unsigned_integer (bytes, 4, BFD_ENDIAN_LITTLE); | |
1714 | } | |
1715 | else | |
1716 | *result = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
1717 | return 1; | |
1718 | } | |
1719 | ||
1720 | /* Read the CU list from the mapped index, and use it to create all | |
1721 | the CU objects for this objfile. Return 0 if something went wrong, | |
1722 | 1 if everything went ok. */ | |
2fdf6df6 | 1723 | |
9291a0cd | 1724 | static int |
1fd400ff TT |
1725 | create_cus_from_index (struct objfile *objfile, const gdb_byte *cu_list, |
1726 | offset_type cu_list_elements) | |
9291a0cd TT |
1727 | { |
1728 | offset_type i; | |
9291a0cd TT |
1729 | |
1730 | dwarf2_per_objfile->n_comp_units = cu_list_elements / 2; | |
1731 | dwarf2_per_objfile->all_comp_units | |
1732 | = obstack_alloc (&objfile->objfile_obstack, | |
1733 | dwarf2_per_objfile->n_comp_units | |
1734 | * sizeof (struct dwarf2_per_cu_data *)); | |
1735 | ||
1736 | for (i = 0; i < cu_list_elements; i += 2) | |
1737 | { | |
1738 | struct dwarf2_per_cu_data *the_cu; | |
1739 | ULONGEST offset, length; | |
1740 | ||
1741 | if (!extract_cu_value (cu_list, &offset) | |
1742 | || !extract_cu_value (cu_list + 8, &length)) | |
1743 | return 0; | |
1744 | cu_list += 2 * 8; | |
1745 | ||
1746 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1747 | struct dwarf2_per_cu_data); | |
1748 | the_cu->offset = offset; | |
1749 | the_cu->length = length; | |
1750 | the_cu->objfile = objfile; | |
1751 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1752 | struct dwarf2_per_cu_quick_data); | |
1753 | dwarf2_per_objfile->all_comp_units[i / 2] = the_cu; | |
1754 | } | |
1755 | ||
1756 | return 1; | |
1757 | } | |
1758 | ||
1fd400ff | 1759 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 1760 | |
1fd400ff | 1761 | static int |
673bfd45 DE |
1762 | create_signatured_type_table_from_index (struct objfile *objfile, |
1763 | const gdb_byte *bytes, | |
1764 | offset_type elements) | |
1fd400ff TT |
1765 | { |
1766 | offset_type i; | |
673bfd45 | 1767 | htab_t sig_types_hash; |
1fd400ff TT |
1768 | |
1769 | dwarf2_per_objfile->n_type_comp_units = elements / 3; | |
1770 | dwarf2_per_objfile->type_comp_units | |
1771 | = obstack_alloc (&objfile->objfile_obstack, | |
1772 | dwarf2_per_objfile->n_type_comp_units | |
1773 | * sizeof (struct dwarf2_per_cu_data *)); | |
1774 | ||
673bfd45 | 1775 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
1776 | |
1777 | for (i = 0; i < elements; i += 3) | |
1778 | { | |
1779 | struct signatured_type *type_sig; | |
1780 | ULONGEST offset, type_offset, signature; | |
1781 | void **slot; | |
1782 | ||
1783 | if (!extract_cu_value (bytes, &offset) | |
1784 | || !extract_cu_value (bytes + 8, &type_offset)) | |
1785 | return 0; | |
1786 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); | |
1787 | bytes += 3 * 8; | |
1788 | ||
1789 | type_sig = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1790 | struct signatured_type); | |
1791 | type_sig->signature = signature; | |
1792 | type_sig->offset = offset; | |
1793 | type_sig->type_offset = type_offset; | |
1794 | type_sig->per_cu.from_debug_types = 1; | |
1795 | type_sig->per_cu.offset = offset; | |
1796 | type_sig->per_cu.objfile = objfile; | |
1797 | type_sig->per_cu.v.quick | |
1798 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1799 | struct dwarf2_per_cu_quick_data); | |
1800 | ||
673bfd45 | 1801 | slot = htab_find_slot (sig_types_hash, type_sig, INSERT); |
1fd400ff TT |
1802 | *slot = type_sig; |
1803 | ||
1804 | dwarf2_per_objfile->type_comp_units[i / 3] = &type_sig->per_cu; | |
1805 | } | |
1806 | ||
673bfd45 | 1807 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
1808 | |
1809 | return 1; | |
1810 | } | |
1811 | ||
9291a0cd TT |
1812 | /* Read the address map data from the mapped index, and use it to |
1813 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 1814 | |
9291a0cd TT |
1815 | static void |
1816 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
1817 | { | |
1818 | const gdb_byte *iter, *end; | |
1819 | struct obstack temp_obstack; | |
1820 | struct addrmap *mutable_map; | |
1821 | struct cleanup *cleanup; | |
1822 | CORE_ADDR baseaddr; | |
1823 | ||
1824 | obstack_init (&temp_obstack); | |
1825 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
1826 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
1827 | ||
1828 | iter = index->address_table; | |
1829 | end = iter + index->address_table_size; | |
1830 | ||
1831 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
1832 | ||
1833 | while (iter < end) | |
1834 | { | |
1835 | ULONGEST hi, lo, cu_index; | |
1836 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
1837 | iter += 8; | |
1838 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
1839 | iter += 8; | |
1840 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
1841 | iter += 4; | |
1842 | ||
1843 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
1fd400ff | 1844 | dw2_get_cu (cu_index)); |
9291a0cd TT |
1845 | } |
1846 | ||
1847 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
1848 | &objfile->objfile_obstack); | |
1849 | do_cleanups (cleanup); | |
1850 | } | |
1851 | ||
1852 | /* The hash function for strings in the mapped index. This is the | |
1853 | same as the hashtab.c hash function, but we keep a separate copy to | |
1854 | maintain control over the implementation. This is necessary | |
1855 | because the hash function is tied to the format of the mapped index | |
1856 | file. */ | |
2fdf6df6 | 1857 | |
9291a0cd TT |
1858 | static hashval_t |
1859 | mapped_index_string_hash (const void *p) | |
1860 | { | |
1861 | const unsigned char *str = (const unsigned char *) p; | |
1862 | hashval_t r = 0; | |
1863 | unsigned char c; | |
1864 | ||
1865 | while ((c = *str++) != 0) | |
1866 | r = r * 67 + c - 113; | |
1867 | ||
1868 | return r; | |
1869 | } | |
1870 | ||
1871 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
1872 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
1873 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 1874 | |
9291a0cd TT |
1875 | static int |
1876 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
1877 | offset_type **vec_out) | |
1878 | { | |
1879 | offset_type hash = mapped_index_string_hash (name); | |
1880 | offset_type slot, step; | |
1881 | ||
3876f04e DE |
1882 | slot = hash & (index->symbol_table_slots - 1); |
1883 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
9291a0cd TT |
1884 | |
1885 | for (;;) | |
1886 | { | |
1887 | /* Convert a slot number to an offset into the table. */ | |
1888 | offset_type i = 2 * slot; | |
1889 | const char *str; | |
3876f04e | 1890 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
9291a0cd TT |
1891 | return 0; |
1892 | ||
3876f04e | 1893 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
9291a0cd TT |
1894 | if (!strcmp (name, str)) |
1895 | { | |
1896 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 1897 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
9291a0cd TT |
1898 | return 1; |
1899 | } | |
1900 | ||
3876f04e | 1901 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
1902 | } |
1903 | } | |
1904 | ||
1905 | /* Read the index file. If everything went ok, initialize the "quick" | |
1906 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
2fdf6df6 | 1907 | |
9291a0cd TT |
1908 | static int |
1909 | dwarf2_read_index (struct objfile *objfile) | |
1910 | { | |
9291a0cd TT |
1911 | char *addr; |
1912 | struct mapped_index *map; | |
b3b272e1 | 1913 | offset_type *metadata; |
ac0b195c KW |
1914 | const gdb_byte *cu_list; |
1915 | const gdb_byte *types_list = NULL; | |
1916 | offset_type version, cu_list_elements; | |
1917 | offset_type types_list_elements = 0; | |
1fd400ff | 1918 | int i; |
9291a0cd TT |
1919 | |
1920 | if (dwarf2_per_objfile->gdb_index.asection == NULL | |
1921 | || dwarf2_per_objfile->gdb_index.size == 0) | |
1922 | return 0; | |
82430852 JK |
1923 | |
1924 | /* Older elfutils strip versions could keep the section in the main | |
1925 | executable while splitting it for the separate debug info file. */ | |
1926 | if ((bfd_get_file_flags (dwarf2_per_objfile->gdb_index.asection) | |
1927 | & SEC_HAS_CONTENTS) == 0) | |
1928 | return 0; | |
1929 | ||
9291a0cd TT |
1930 | dwarf2_read_section (objfile, &dwarf2_per_objfile->gdb_index); |
1931 | ||
1932 | addr = dwarf2_per_objfile->gdb_index.buffer; | |
1933 | /* Version check. */ | |
1fd400ff | 1934 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c TT |
1935 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
1936 | causes the index to behave very poorly for certain requests. So, | |
1937 | it seems better to just ignore such indices. */ | |
1938 | if (version < 3) | |
9291a0cd TT |
1939 | return 0; |
1940 | ||
1941 | map = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct mapped_index); | |
b3b272e1 | 1942 | map->total_size = dwarf2_per_objfile->gdb_index.size; |
9291a0cd TT |
1943 | |
1944 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
1945 | |
1946 | i = 0; | |
1947 | cu_list = addr + MAYBE_SWAP (metadata[i]); | |
1948 | cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
9291a0cd | 1949 | / 8); |
1fd400ff TT |
1950 | ++i; |
1951 | ||
987d643c TT |
1952 | types_list = addr + MAYBE_SWAP (metadata[i]); |
1953 | types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
1954 | - MAYBE_SWAP (metadata[i])) | |
1955 | / 8); | |
1956 | ++i; | |
1fd400ff TT |
1957 | |
1958 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
1959 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
1960 | - MAYBE_SWAP (metadata[i])); | |
1961 | ++i; | |
1962 | ||
3876f04e DE |
1963 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
1964 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
1965 | - MAYBE_SWAP (metadata[i])) | |
1966 | / (2 * sizeof (offset_type))); | |
1fd400ff | 1967 | ++i; |
9291a0cd | 1968 | |
1fd400ff TT |
1969 | map->constant_pool = addr + MAYBE_SWAP (metadata[i]); |
1970 | ||
1971 | if (!create_cus_from_index (objfile, cu_list, cu_list_elements)) | |
1972 | return 0; | |
1973 | ||
987d643c | 1974 | if (types_list_elements |
673bfd45 DE |
1975 | && !create_signatured_type_table_from_index (objfile, types_list, |
1976 | types_list_elements)) | |
9291a0cd TT |
1977 | return 0; |
1978 | ||
1979 | create_addrmap_from_index (objfile, map); | |
1980 | ||
1981 | dwarf2_per_objfile->index_table = map; | |
1982 | dwarf2_per_objfile->using_index = 1; | |
1983 | ||
1984 | return 1; | |
1985 | } | |
1986 | ||
1987 | /* A helper for the "quick" functions which sets the global | |
1988 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 1989 | |
9291a0cd TT |
1990 | static void |
1991 | dw2_setup (struct objfile *objfile) | |
1992 | { | |
1993 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
1994 | gdb_assert (dwarf2_per_objfile); | |
1995 | } | |
1996 | ||
1997 | /* A helper for the "quick" functions which attempts to read the line | |
1998 | table for THIS_CU. */ | |
2fdf6df6 | 1999 | |
9291a0cd TT |
2000 | static void |
2001 | dw2_require_line_header (struct objfile *objfile, | |
2002 | struct dwarf2_per_cu_data *this_cu) | |
2003 | { | |
2004 | bfd *abfd = objfile->obfd; | |
2005 | struct line_header *lh = NULL; | |
2006 | struct attribute *attr; | |
2007 | struct cleanup *cleanups; | |
2008 | struct die_info *comp_unit_die; | |
36374493 | 2009 | struct dwarf2_section_info* sec; |
9291a0cd TT |
2010 | gdb_byte *beg_of_comp_unit, *info_ptr, *buffer; |
2011 | int has_children, i; | |
2012 | struct dwarf2_cu cu; | |
2013 | unsigned int bytes_read, buffer_size; | |
2014 | struct die_reader_specs reader_specs; | |
2015 | char *name, *comp_dir; | |
2016 | ||
2017 | if (this_cu->v.quick->read_lines) | |
2018 | return; | |
2019 | this_cu->v.quick->read_lines = 1; | |
2020 | ||
2021 | memset (&cu, 0, sizeof (cu)); | |
2022 | cu.objfile = objfile; | |
2023 | obstack_init (&cu.comp_unit_obstack); | |
2024 | ||
2025 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
2026 | ||
36374493 DE |
2027 | if (this_cu->from_debug_types) |
2028 | sec = &dwarf2_per_objfile->types; | |
2029 | else | |
2030 | sec = &dwarf2_per_objfile->info; | |
2031 | dwarf2_read_section (objfile, sec); | |
2032 | buffer_size = sec->size; | |
2033 | buffer = sec->buffer; | |
9291a0cd TT |
2034 | info_ptr = buffer + this_cu->offset; |
2035 | beg_of_comp_unit = info_ptr; | |
2036 | ||
2037 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, | |
2038 | buffer, buffer_size, | |
2039 | abfd); | |
2040 | ||
2041 | /* Complete the cu_header. */ | |
2042 | cu.header.offset = beg_of_comp_unit - buffer; | |
2043 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; | |
2044 | ||
2045 | this_cu->cu = &cu; | |
2046 | cu.per_cu = this_cu; | |
2047 | ||
2048 | dwarf2_read_abbrevs (abfd, &cu); | |
2049 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
2050 | ||
2051 | if (this_cu->from_debug_types) | |
2052 | info_ptr += 8 /*signature*/ + cu.header.offset_size; | |
2053 | init_cu_die_reader (&reader_specs, &cu); | |
2054 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
2055 | &has_children); | |
2056 | ||
2057 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, &cu); | |
2058 | if (attr) | |
2059 | { | |
2060 | unsigned int line_offset = DW_UNSND (attr); | |
2061 | lh = dwarf_decode_line_header (line_offset, abfd, &cu); | |
2062 | } | |
2063 | if (lh == NULL) | |
2064 | { | |
2065 | do_cleanups (cleanups); | |
2066 | return; | |
2067 | } | |
2068 | ||
2069 | find_file_and_directory (comp_unit_die, &cu, &name, &comp_dir); | |
2070 | ||
2071 | this_cu->v.quick->lines = lh; | |
2072 | ||
2073 | this_cu->v.quick->file_names | |
2074 | = obstack_alloc (&objfile->objfile_obstack, | |
2075 | lh->num_file_names * sizeof (char *)); | |
2076 | for (i = 0; i < lh->num_file_names; ++i) | |
2077 | this_cu->v.quick->file_names[i] = file_full_name (i + 1, lh, comp_dir); | |
2078 | ||
2079 | do_cleanups (cleanups); | |
2080 | } | |
2081 | ||
2082 | /* A helper for the "quick" functions which computes and caches the | |
2083 | real path for a given file name from the line table. | |
2084 | dw2_require_line_header must have been called before this is | |
2085 | invoked. */ | |
2fdf6df6 | 2086 | |
9291a0cd TT |
2087 | static const char * |
2088 | dw2_require_full_path (struct objfile *objfile, | |
e254ef6a | 2089 | struct dwarf2_per_cu_data *per_cu, |
9291a0cd TT |
2090 | int index) |
2091 | { | |
e254ef6a DE |
2092 | if (!per_cu->v.quick->full_names) |
2093 | per_cu->v.quick->full_names | |
9291a0cd | 2094 | = OBSTACK_CALLOC (&objfile->objfile_obstack, |
e254ef6a | 2095 | per_cu->v.quick->lines->num_file_names, |
9291a0cd TT |
2096 | sizeof (char *)); |
2097 | ||
e254ef6a DE |
2098 | if (!per_cu->v.quick->full_names[index]) |
2099 | per_cu->v.quick->full_names[index] | |
2100 | = gdb_realpath (per_cu->v.quick->file_names[index]); | |
9291a0cd | 2101 | |
e254ef6a | 2102 | return per_cu->v.quick->full_names[index]; |
9291a0cd TT |
2103 | } |
2104 | ||
2105 | static struct symtab * | |
2106 | dw2_find_last_source_symtab (struct objfile *objfile) | |
2107 | { | |
2108 | int index; | |
2109 | dw2_setup (objfile); | |
2110 | index = dwarf2_per_objfile->n_comp_units - 1; | |
1fd400ff | 2111 | return dw2_instantiate_symtab (objfile, dw2_get_cu (index)); |
9291a0cd TT |
2112 | } |
2113 | ||
2114 | static void | |
2115 | dw2_forget_cached_source_info (struct objfile *objfile) | |
2116 | { | |
2117 | int i; | |
2118 | ||
2119 | dw2_setup (objfile); | |
1fd400ff TT |
2120 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2121 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2122 | { |
e254ef6a | 2123 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2124 | |
e254ef6a | 2125 | if (per_cu->v.quick->full_names) |
9291a0cd TT |
2126 | { |
2127 | int j; | |
2128 | ||
e254ef6a DE |
2129 | for (j = 0; j < per_cu->v.quick->lines->num_file_names; ++j) |
2130 | xfree ((void *) per_cu->v.quick->full_names[j]); | |
9291a0cd TT |
2131 | } |
2132 | } | |
2133 | } | |
2134 | ||
2135 | static int | |
2136 | dw2_lookup_symtab (struct objfile *objfile, const char *name, | |
2137 | const char *full_path, const char *real_path, | |
2138 | struct symtab **result) | |
2139 | { | |
2140 | int i; | |
2141 | int check_basename = lbasename (name) == name; | |
2142 | struct dwarf2_per_cu_data *base_cu = NULL; | |
2143 | ||
2144 | dw2_setup (objfile); | |
1fd400ff TT |
2145 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2146 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2147 | { |
2148 | int j; | |
e254ef6a | 2149 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2150 | |
e254ef6a | 2151 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2152 | continue; |
2153 | ||
e254ef6a DE |
2154 | dw2_require_line_header (objfile, per_cu); |
2155 | if (!per_cu->v.quick->lines) | |
9291a0cd TT |
2156 | continue; |
2157 | ||
e254ef6a | 2158 | for (j = 0; j < per_cu->v.quick->lines->num_file_names; ++j) |
9291a0cd | 2159 | { |
e254ef6a | 2160 | const char *this_name = per_cu->v.quick->file_names[j]; |
9291a0cd TT |
2161 | |
2162 | if (FILENAME_CMP (name, this_name) == 0) | |
2163 | { | |
e254ef6a | 2164 | *result = dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2165 | return 1; |
2166 | } | |
2167 | ||
2168 | if (check_basename && ! base_cu | |
2169 | && FILENAME_CMP (lbasename (this_name), name) == 0) | |
e254ef6a | 2170 | base_cu = per_cu; |
9291a0cd TT |
2171 | |
2172 | if (full_path != NULL) | |
2173 | { | |
2174 | const char *this_full_name = dw2_require_full_path (objfile, | |
e254ef6a | 2175 | per_cu, j); |
9291a0cd TT |
2176 | |
2177 | if (this_full_name | |
2178 | && FILENAME_CMP (full_path, this_full_name) == 0) | |
2179 | { | |
e254ef6a | 2180 | *result = dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2181 | return 1; |
2182 | } | |
2183 | } | |
2184 | ||
2185 | if (real_path != NULL) | |
2186 | { | |
2187 | const char *this_full_name = dw2_require_full_path (objfile, | |
e254ef6a | 2188 | per_cu, j); |
9291a0cd TT |
2189 | |
2190 | if (this_full_name != NULL) | |
2191 | { | |
2192 | char *rp = gdb_realpath (this_full_name); | |
2193 | if (rp != NULL && FILENAME_CMP (real_path, rp) == 0) | |
2194 | { | |
2195 | xfree (rp); | |
e254ef6a | 2196 | *result = dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2197 | return 1; |
2198 | } | |
2199 | xfree (rp); | |
2200 | } | |
2201 | } | |
2202 | } | |
2203 | } | |
2204 | ||
2205 | if (base_cu) | |
2206 | { | |
2207 | *result = dw2_instantiate_symtab (objfile, base_cu); | |
2208 | return 1; | |
2209 | } | |
2210 | ||
2211 | return 0; | |
2212 | } | |
2213 | ||
2214 | static struct symtab * | |
2215 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
2216 | const char *name, domain_enum domain) | |
2217 | { | |
774b6a14 | 2218 | /* We do all the work in the pre_expand_symtabs_matching hook |
9291a0cd TT |
2219 | instead. */ |
2220 | return NULL; | |
2221 | } | |
2222 | ||
2223 | /* A helper function that expands all symtabs that hold an object | |
2224 | named NAME. */ | |
2fdf6df6 | 2225 | |
9291a0cd TT |
2226 | static void |
2227 | dw2_do_expand_symtabs_matching (struct objfile *objfile, const char *name) | |
2228 | { | |
2229 | dw2_setup (objfile); | |
2230 | ||
2231 | if (dwarf2_per_objfile->index_table) | |
2232 | { | |
2233 | offset_type *vec; | |
2234 | ||
2235 | if (find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2236 | name, &vec)) | |
2237 | { | |
2238 | offset_type i, len = MAYBE_SWAP (*vec); | |
2239 | for (i = 0; i < len; ++i) | |
2240 | { | |
2241 | offset_type cu_index = MAYBE_SWAP (vec[i + 1]); | |
e254ef6a | 2242 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (cu_index); |
1fd400ff | 2243 | |
e254ef6a | 2244 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2245 | } |
2246 | } | |
2247 | } | |
2248 | } | |
2249 | ||
774b6a14 TT |
2250 | static void |
2251 | dw2_pre_expand_symtabs_matching (struct objfile *objfile, | |
2252 | int kind, const char *name, | |
2253 | domain_enum domain) | |
9291a0cd | 2254 | { |
774b6a14 | 2255 | dw2_do_expand_symtabs_matching (objfile, name); |
9291a0cd TT |
2256 | } |
2257 | ||
2258 | static void | |
2259 | dw2_print_stats (struct objfile *objfile) | |
2260 | { | |
2261 | int i, count; | |
2262 | ||
2263 | dw2_setup (objfile); | |
2264 | count = 0; | |
1fd400ff TT |
2265 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2266 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2267 | { |
e254ef6a | 2268 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2269 | |
e254ef6a | 2270 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
2271 | ++count; |
2272 | } | |
2273 | printf_filtered (_(" Number of unread CUs: %d\n"), count); | |
2274 | } | |
2275 | ||
2276 | static void | |
2277 | dw2_dump (struct objfile *objfile) | |
2278 | { | |
2279 | /* Nothing worth printing. */ | |
2280 | } | |
2281 | ||
2282 | static void | |
2283 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
2284 | struct section_offsets *delta) | |
2285 | { | |
2286 | /* There's nothing to relocate here. */ | |
2287 | } | |
2288 | ||
2289 | static void | |
2290 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
2291 | const char *func_name) | |
2292 | { | |
2293 | dw2_do_expand_symtabs_matching (objfile, func_name); | |
2294 | } | |
2295 | ||
2296 | static void | |
2297 | dw2_expand_all_symtabs (struct objfile *objfile) | |
2298 | { | |
2299 | int i; | |
2300 | ||
2301 | dw2_setup (objfile); | |
1fd400ff TT |
2302 | |
2303 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2304 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2305 | { |
e254ef6a | 2306 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2307 | |
e254ef6a | 2308 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2309 | } |
2310 | } | |
2311 | ||
2312 | static void | |
2313 | dw2_expand_symtabs_with_filename (struct objfile *objfile, | |
2314 | const char *filename) | |
2315 | { | |
2316 | int i; | |
2317 | ||
2318 | dw2_setup (objfile); | |
1fd400ff TT |
2319 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2320 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2321 | { |
2322 | int j; | |
e254ef6a | 2323 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2324 | |
e254ef6a | 2325 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2326 | continue; |
2327 | ||
e254ef6a DE |
2328 | dw2_require_line_header (objfile, per_cu); |
2329 | if (!per_cu->v.quick->lines) | |
9291a0cd TT |
2330 | continue; |
2331 | ||
e254ef6a | 2332 | for (j = 0; j < per_cu->v.quick->lines->num_file_names; ++j) |
9291a0cd | 2333 | { |
e254ef6a | 2334 | const char *this_name = per_cu->v.quick->file_names[j]; |
9291a0cd TT |
2335 | if (strcmp (this_name, filename) == 0) |
2336 | { | |
e254ef6a | 2337 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2338 | break; |
2339 | } | |
2340 | } | |
2341 | } | |
2342 | } | |
2343 | ||
dd786858 | 2344 | static const char * |
9291a0cd TT |
2345 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
2346 | { | |
e254ef6a | 2347 | struct dwarf2_per_cu_data *per_cu; |
9291a0cd TT |
2348 | offset_type *vec; |
2349 | ||
2350 | dw2_setup (objfile); | |
2351 | ||
2352 | if (!dwarf2_per_objfile->index_table) | |
2353 | return NULL; | |
2354 | ||
2355 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2356 | name, &vec)) | |
2357 | return NULL; | |
2358 | ||
2359 | /* Note that this just looks at the very first one named NAME -- but | |
2360 | actually we are looking for a function. find_main_filename | |
2361 | should be rewritten so that it doesn't require a custom hook. It | |
2362 | could just use the ordinary symbol tables. */ | |
2363 | /* vec[0] is the length, which must always be >0. */ | |
e254ef6a | 2364 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[1])); |
9291a0cd | 2365 | |
e254ef6a DE |
2366 | dw2_require_line_header (objfile, per_cu); |
2367 | if (!per_cu->v.quick->lines) | |
9291a0cd TT |
2368 | return NULL; |
2369 | ||
e254ef6a | 2370 | return per_cu->v.quick->file_names[per_cu->v.quick->lines->num_file_names - 1]; |
9291a0cd TT |
2371 | } |
2372 | ||
2373 | static void | |
40658b94 PH |
2374 | dw2_map_matching_symbols (const char * name, domain_enum namespace, |
2375 | struct objfile *objfile, int global, | |
2376 | int (*callback) (struct block *, | |
2377 | struct symbol *, void *), | |
2378 | void *data, | |
2379 | int (*match) (const char *, const char *), | |
2380 | int (*ordered_compare) (const char *, | |
2381 | const char *)) | |
9291a0cd | 2382 | { |
40658b94 | 2383 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
2384 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
2385 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
2386 | } |
2387 | ||
2388 | static void | |
2389 | dw2_expand_symtabs_matching (struct objfile *objfile, | |
2390 | int (*file_matcher) (const char *, void *), | |
2391 | int (*name_matcher) (const char *, void *), | |
2392 | domain_enum kind, | |
2393 | void *data) | |
2394 | { | |
2395 | int i; | |
2396 | offset_type iter; | |
4b5246aa | 2397 | struct mapped_index *index; |
9291a0cd TT |
2398 | |
2399 | dw2_setup (objfile); | |
2400 | if (!dwarf2_per_objfile->index_table) | |
2401 | return; | |
4b5246aa | 2402 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 2403 | |
1fd400ff TT |
2404 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2405 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2406 | { |
2407 | int j; | |
e254ef6a | 2408 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2409 | |
e254ef6a DE |
2410 | per_cu->v.quick->mark = 0; |
2411 | if (per_cu->v.quick->symtab) | |
9291a0cd TT |
2412 | continue; |
2413 | ||
e254ef6a DE |
2414 | dw2_require_line_header (objfile, per_cu); |
2415 | if (!per_cu->v.quick->lines) | |
9291a0cd TT |
2416 | continue; |
2417 | ||
e254ef6a | 2418 | for (j = 0; j < per_cu->v.quick->lines->num_file_names; ++j) |
9291a0cd | 2419 | { |
e254ef6a | 2420 | if (file_matcher (per_cu->v.quick->file_names[j], data)) |
9291a0cd | 2421 | { |
e254ef6a | 2422 | per_cu->v.quick->mark = 1; |
9291a0cd TT |
2423 | break; |
2424 | } | |
2425 | } | |
2426 | } | |
2427 | ||
3876f04e | 2428 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
2429 | { |
2430 | offset_type idx = 2 * iter; | |
2431 | const char *name; | |
2432 | offset_type *vec, vec_len, vec_idx; | |
2433 | ||
3876f04e | 2434 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
2435 | continue; |
2436 | ||
3876f04e | 2437 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd TT |
2438 | |
2439 | if (! (*name_matcher) (name, data)) | |
2440 | continue; | |
2441 | ||
2442 | /* The name was matched, now expand corresponding CUs that were | |
2443 | marked. */ | |
4b5246aa | 2444 | vec = (offset_type *) (index->constant_pool |
3876f04e | 2445 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
2446 | vec_len = MAYBE_SWAP (vec[0]); |
2447 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
2448 | { | |
e254ef6a | 2449 | struct dwarf2_per_cu_data *per_cu; |
1fd400ff | 2450 | |
e254ef6a DE |
2451 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[vec_idx + 1])); |
2452 | if (per_cu->v.quick->mark) | |
2453 | dw2_instantiate_symtab (objfile, per_cu); | |
9291a0cd TT |
2454 | } |
2455 | } | |
2456 | } | |
2457 | ||
2458 | static struct symtab * | |
2459 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
2460 | struct minimal_symbol *msymbol, | |
2461 | CORE_ADDR pc, | |
2462 | struct obj_section *section, | |
2463 | int warn_if_readin) | |
2464 | { | |
2465 | struct dwarf2_per_cu_data *data; | |
2466 | ||
2467 | dw2_setup (objfile); | |
2468 | ||
2469 | if (!objfile->psymtabs_addrmap) | |
2470 | return NULL; | |
2471 | ||
2472 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
2473 | if (!data) | |
2474 | return NULL; | |
2475 | ||
2476 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 2477 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
2478 | paddress (get_objfile_arch (objfile), pc)); |
2479 | ||
2480 | return dw2_instantiate_symtab (objfile, data); | |
2481 | } | |
2482 | ||
2483 | static void | |
2484 | dw2_map_symbol_names (struct objfile *objfile, | |
2485 | void (*fun) (const char *, void *), | |
2486 | void *data) | |
2487 | { | |
2488 | offset_type iter; | |
4b5246aa TT |
2489 | struct mapped_index *index; |
2490 | ||
9291a0cd TT |
2491 | dw2_setup (objfile); |
2492 | ||
2493 | if (!dwarf2_per_objfile->index_table) | |
2494 | return; | |
4b5246aa | 2495 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 2496 | |
3876f04e | 2497 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
2498 | { |
2499 | offset_type idx = 2 * iter; | |
2500 | const char *name; | |
2501 | offset_type *vec, vec_len, vec_idx; | |
2502 | ||
3876f04e | 2503 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
2504 | continue; |
2505 | ||
3876f04e | 2506 | name = (index->constant_pool + MAYBE_SWAP (index->symbol_table[idx])); |
9291a0cd TT |
2507 | |
2508 | (*fun) (name, data); | |
2509 | } | |
2510 | } | |
2511 | ||
2512 | static void | |
2513 | dw2_map_symbol_filenames (struct objfile *objfile, | |
2514 | void (*fun) (const char *, const char *, void *), | |
2515 | void *data) | |
2516 | { | |
2517 | int i; | |
2518 | ||
2519 | dw2_setup (objfile); | |
1fd400ff TT |
2520 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2521 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2522 | { |
2523 | int j; | |
e254ef6a | 2524 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2525 | |
e254ef6a | 2526 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2527 | continue; |
2528 | ||
e254ef6a DE |
2529 | dw2_require_line_header (objfile, per_cu); |
2530 | if (!per_cu->v.quick->lines) | |
9291a0cd TT |
2531 | continue; |
2532 | ||
e254ef6a | 2533 | for (j = 0; j < per_cu->v.quick->lines->num_file_names; ++j) |
9291a0cd | 2534 | { |
e254ef6a DE |
2535 | const char *this_full_name = dw2_require_full_path (objfile, per_cu, |
2536 | j); | |
2537 | (*fun) (per_cu->v.quick->file_names[j], this_full_name, data); | |
9291a0cd TT |
2538 | } |
2539 | } | |
2540 | } | |
2541 | ||
2542 | static int | |
2543 | dw2_has_symbols (struct objfile *objfile) | |
2544 | { | |
2545 | return 1; | |
2546 | } | |
2547 | ||
2548 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
2549 | { | |
2550 | dw2_has_symbols, | |
2551 | dw2_find_last_source_symtab, | |
2552 | dw2_forget_cached_source_info, | |
2553 | dw2_lookup_symtab, | |
2554 | dw2_lookup_symbol, | |
774b6a14 | 2555 | dw2_pre_expand_symtabs_matching, |
9291a0cd TT |
2556 | dw2_print_stats, |
2557 | dw2_dump, | |
2558 | dw2_relocate, | |
2559 | dw2_expand_symtabs_for_function, | |
2560 | dw2_expand_all_symtabs, | |
2561 | dw2_expand_symtabs_with_filename, | |
2562 | dw2_find_symbol_file, | |
40658b94 | 2563 | dw2_map_matching_symbols, |
9291a0cd TT |
2564 | dw2_expand_symtabs_matching, |
2565 | dw2_find_pc_sect_symtab, | |
2566 | dw2_map_symbol_names, | |
2567 | dw2_map_symbol_filenames | |
2568 | }; | |
2569 | ||
2570 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
2571 | file will use psymtabs, or 1 if using the GNU index. */ | |
2572 | ||
2573 | int | |
2574 | dwarf2_initialize_objfile (struct objfile *objfile) | |
2575 | { | |
2576 | /* If we're about to read full symbols, don't bother with the | |
2577 | indices. In this case we also don't care if some other debug | |
2578 | format is making psymtabs, because they are all about to be | |
2579 | expanded anyway. */ | |
2580 | if ((objfile->flags & OBJF_READNOW)) | |
2581 | { | |
2582 | int i; | |
2583 | ||
2584 | dwarf2_per_objfile->using_index = 1; | |
2585 | create_all_comp_units (objfile); | |
1fd400ff | 2586 | create_debug_types_hash_table (objfile); |
9291a0cd | 2587 | |
1fd400ff TT |
2588 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2589 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2590 | { |
e254ef6a | 2591 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2592 | |
e254ef6a DE |
2593 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2594 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
2595 | } |
2596 | ||
2597 | /* Return 1 so that gdb sees the "quick" functions. However, | |
2598 | these functions will be no-ops because we will have expanded | |
2599 | all symtabs. */ | |
2600 | return 1; | |
2601 | } | |
2602 | ||
2603 | if (dwarf2_read_index (objfile)) | |
2604 | return 1; | |
2605 | ||
2606 | dwarf2_build_psymtabs (objfile); | |
2607 | return 0; | |
2608 | } | |
2609 | ||
2610 | \f | |
2611 | ||
dce234bc PP |
2612 | /* Build a partial symbol table. */ |
2613 | ||
2614 | void | |
f29dff0a | 2615 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 2616 | { |
f29dff0a | 2617 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
2618 | { |
2619 | init_psymbol_list (objfile, 1024); | |
2620 | } | |
2621 | ||
d146bf1e | 2622 | dwarf2_build_psymtabs_hard (objfile); |
c906108c | 2623 | } |
c906108c | 2624 | |
45452591 DE |
2625 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
2626 | ||
2627 | static inline int | |
2628 | offset_in_cu_p (const struct comp_unit_head *cu_header, unsigned int offset) | |
2629 | { | |
2630 | unsigned int bottom = cu_header->offset; | |
2631 | unsigned int top = (cu_header->offset | |
2632 | + cu_header->length | |
2633 | + cu_header->initial_length_size); | |
9a619af0 | 2634 | |
45452591 DE |
2635 | return (offset >= bottom && offset < top); |
2636 | } | |
2637 | ||
93311388 DE |
2638 | /* Read in the comp unit header information from the debug_info at info_ptr. |
2639 | NOTE: This leaves members offset, first_die_offset to be filled in | |
2640 | by the caller. */ | |
107d2387 | 2641 | |
fe1b8b76 | 2642 | static gdb_byte * |
107d2387 | 2643 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 2644 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
2645 | { |
2646 | int signed_addr; | |
891d2f0b | 2647 | unsigned int bytes_read; |
c764a876 DE |
2648 | |
2649 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
2650 | cu_header->initial_length_size = bytes_read; | |
2651 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 2652 | info_ptr += bytes_read; |
107d2387 AC |
2653 | cu_header->version = read_2_bytes (abfd, info_ptr); |
2654 | info_ptr += 2; | |
613e1657 | 2655 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
c764a876 | 2656 | &bytes_read); |
613e1657 | 2657 | info_ptr += bytes_read; |
107d2387 AC |
2658 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
2659 | info_ptr += 1; | |
2660 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
2661 | if (signed_addr < 0) | |
8e65ff28 | 2662 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2663 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 2664 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 2665 | |
107d2387 AC |
2666 | return info_ptr; |
2667 | } | |
2668 | ||
fe1b8b76 JB |
2669 | static gdb_byte * |
2670 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
93311388 | 2671 | gdb_byte *buffer, unsigned int buffer_size, |
72bf9492 DJ |
2672 | bfd *abfd) |
2673 | { | |
fe1b8b76 | 2674 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
2675 | |
2676 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
2677 | ||
2dc7f7b3 | 2678 | if (header->version != 2 && header->version != 3 && header->version != 4) |
8a3fe4f8 | 2679 | error (_("Dwarf Error: wrong version in compilation unit header " |
2dc7f7b3 TT |
2680 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, |
2681 | bfd_get_filename (abfd)); | |
72bf9492 | 2682 | |
dce234bc | 2683 | if (header->abbrev_offset >= dwarf2_per_objfile->abbrev.size) |
8a3fe4f8 AC |
2684 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
2685 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 | 2686 | (long) header->abbrev_offset, |
93311388 | 2687 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
2688 | bfd_get_filename (abfd)); |
2689 | ||
2690 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
93311388 | 2691 | > buffer + buffer_size) |
8a3fe4f8 AC |
2692 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
2693 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 | 2694 | (long) header->length, |
93311388 | 2695 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
2696 | bfd_get_filename (abfd)); |
2697 | ||
2698 | return info_ptr; | |
2699 | } | |
2700 | ||
348e048f DE |
2701 | /* Read in the types comp unit header information from .debug_types entry at |
2702 | types_ptr. The result is a pointer to one past the end of the header. */ | |
2703 | ||
2704 | static gdb_byte * | |
2705 | read_type_comp_unit_head (struct comp_unit_head *cu_header, | |
2706 | ULONGEST *signature, | |
2707 | gdb_byte *types_ptr, bfd *abfd) | |
2708 | { | |
348e048f DE |
2709 | gdb_byte *initial_types_ptr = types_ptr; |
2710 | ||
6e70227d | 2711 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
fa238c03 | 2712 | &dwarf2_per_objfile->types); |
348e048f DE |
2713 | cu_header->offset = types_ptr - dwarf2_per_objfile->types.buffer; |
2714 | ||
2715 | types_ptr = read_comp_unit_head (cu_header, types_ptr, abfd); | |
2716 | ||
2717 | *signature = read_8_bytes (abfd, types_ptr); | |
2718 | types_ptr += 8; | |
2719 | types_ptr += cu_header->offset_size; | |
2720 | cu_header->first_die_offset = types_ptr - initial_types_ptr; | |
2721 | ||
2722 | return types_ptr; | |
2723 | } | |
2724 | ||
aaa75496 JB |
2725 | /* Allocate a new partial symtab for file named NAME and mark this new |
2726 | partial symtab as being an include of PST. */ | |
2727 | ||
2728 | static void | |
2729 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
2730 | struct objfile *objfile) | |
2731 | { | |
2732 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
2733 | ||
2734 | subpst->section_offsets = pst->section_offsets; | |
2735 | subpst->textlow = 0; | |
2736 | subpst->texthigh = 0; | |
2737 | ||
2738 | subpst->dependencies = (struct partial_symtab **) | |
2739 | obstack_alloc (&objfile->objfile_obstack, | |
2740 | sizeof (struct partial_symtab *)); | |
2741 | subpst->dependencies[0] = pst; | |
2742 | subpst->number_of_dependencies = 1; | |
2743 | ||
2744 | subpst->globals_offset = 0; | |
2745 | subpst->n_global_syms = 0; | |
2746 | subpst->statics_offset = 0; | |
2747 | subpst->n_static_syms = 0; | |
2748 | subpst->symtab = NULL; | |
2749 | subpst->read_symtab = pst->read_symtab; | |
2750 | subpst->readin = 0; | |
2751 | ||
2752 | /* No private part is necessary for include psymtabs. This property | |
2753 | can be used to differentiate between such include psymtabs and | |
10b3939b | 2754 | the regular ones. */ |
58a9656e | 2755 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
2756 | } |
2757 | ||
2758 | /* Read the Line Number Program data and extract the list of files | |
2759 | included by the source file represented by PST. Build an include | |
d85a05f0 | 2760 | partial symtab for each of these included files. */ |
aaa75496 JB |
2761 | |
2762 | static void | |
2763 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
d85a05f0 | 2764 | struct die_info *die, |
aaa75496 JB |
2765 | struct partial_symtab *pst) |
2766 | { | |
2767 | struct objfile *objfile = cu->objfile; | |
2768 | bfd *abfd = objfile->obfd; | |
d85a05f0 DJ |
2769 | struct line_header *lh = NULL; |
2770 | struct attribute *attr; | |
aaa75496 | 2771 | |
d85a05f0 DJ |
2772 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
2773 | if (attr) | |
2774 | { | |
2775 | unsigned int line_offset = DW_UNSND (attr); | |
9a619af0 | 2776 | |
d85a05f0 DJ |
2777 | lh = dwarf_decode_line_header (line_offset, abfd, cu); |
2778 | } | |
aaa75496 JB |
2779 | if (lh == NULL) |
2780 | return; /* No linetable, so no includes. */ | |
2781 | ||
c6da4cef DE |
2782 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
2783 | dwarf_decode_lines (lh, pst->dirname, abfd, cu, pst); | |
aaa75496 JB |
2784 | |
2785 | free_line_header (lh); | |
2786 | } | |
2787 | ||
348e048f DE |
2788 | static hashval_t |
2789 | hash_type_signature (const void *item) | |
2790 | { | |
2791 | const struct signatured_type *type_sig = item; | |
9a619af0 | 2792 | |
348e048f DE |
2793 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
2794 | return type_sig->signature; | |
2795 | } | |
2796 | ||
2797 | static int | |
2798 | eq_type_signature (const void *item_lhs, const void *item_rhs) | |
2799 | { | |
2800 | const struct signatured_type *lhs = item_lhs; | |
2801 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 2802 | |
348e048f DE |
2803 | return lhs->signature == rhs->signature; |
2804 | } | |
2805 | ||
1fd400ff TT |
2806 | /* Allocate a hash table for signatured types. */ |
2807 | ||
2808 | static htab_t | |
673bfd45 | 2809 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
2810 | { |
2811 | return htab_create_alloc_ex (41, | |
2812 | hash_type_signature, | |
2813 | eq_type_signature, | |
2814 | NULL, | |
2815 | &objfile->objfile_obstack, | |
2816 | hashtab_obstack_allocate, | |
2817 | dummy_obstack_deallocate); | |
2818 | } | |
2819 | ||
2820 | /* A helper function to add a signatured type CU to a list. */ | |
2821 | ||
2822 | static int | |
2823 | add_signatured_type_cu_to_list (void **slot, void *datum) | |
2824 | { | |
2825 | struct signatured_type *sigt = *slot; | |
2826 | struct dwarf2_per_cu_data ***datap = datum; | |
2827 | ||
2828 | **datap = &sigt->per_cu; | |
2829 | ++*datap; | |
2830 | ||
2831 | return 1; | |
2832 | } | |
2833 | ||
348e048f DE |
2834 | /* Create the hash table of all entries in the .debug_types section. |
2835 | The result is zero if there is an error (e.g. missing .debug_types section), | |
2836 | otherwise non-zero. */ | |
2837 | ||
2838 | static int | |
2839 | create_debug_types_hash_table (struct objfile *objfile) | |
2840 | { | |
be391dca | 2841 | gdb_byte *info_ptr; |
348e048f | 2842 | htab_t types_htab; |
1fd400ff | 2843 | struct dwarf2_per_cu_data **iter; |
348e048f | 2844 | |
be391dca TT |
2845 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
2846 | info_ptr = dwarf2_per_objfile->types.buffer; | |
2847 | ||
348e048f DE |
2848 | if (info_ptr == NULL) |
2849 | { | |
2850 | dwarf2_per_objfile->signatured_types = NULL; | |
2851 | return 0; | |
2852 | } | |
2853 | ||
673bfd45 | 2854 | types_htab = allocate_signatured_type_table (objfile); |
348e048f DE |
2855 | |
2856 | if (dwarf2_die_debug) | |
2857 | fprintf_unfiltered (gdb_stdlog, "Signatured types:\n"); | |
2858 | ||
2859 | while (info_ptr < dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size) | |
2860 | { | |
2861 | unsigned int offset; | |
2862 | unsigned int offset_size; | |
2863 | unsigned int type_offset; | |
2864 | unsigned int length, initial_length_size; | |
2865 | unsigned short version; | |
2866 | ULONGEST signature; | |
2867 | struct signatured_type *type_sig; | |
2868 | void **slot; | |
2869 | gdb_byte *ptr = info_ptr; | |
2870 | ||
2871 | offset = ptr - dwarf2_per_objfile->types.buffer; | |
2872 | ||
2873 | /* We need to read the type's signature in order to build the hash | |
2874 | table, but we don't need to read anything else just yet. */ | |
2875 | ||
2876 | /* Sanity check to ensure entire cu is present. */ | |
2877 | length = read_initial_length (objfile->obfd, ptr, &initial_length_size); | |
2878 | if (ptr + length + initial_length_size | |
2879 | > dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size) | |
2880 | { | |
2881 | complaint (&symfile_complaints, | |
2882 | _("debug type entry runs off end of `.debug_types' section, ignored")); | |
2883 | break; | |
2884 | } | |
2885 | ||
2886 | offset_size = initial_length_size == 4 ? 4 : 8; | |
2887 | ptr += initial_length_size; | |
2888 | version = bfd_get_16 (objfile->obfd, ptr); | |
2889 | ptr += 2; | |
2890 | ptr += offset_size; /* abbrev offset */ | |
2891 | ptr += 1; /* address size */ | |
2892 | signature = bfd_get_64 (objfile->obfd, ptr); | |
2893 | ptr += 8; | |
2894 | type_offset = read_offset_1 (objfile->obfd, ptr, offset_size); | |
2895 | ||
2896 | type_sig = obstack_alloc (&objfile->objfile_obstack, sizeof (*type_sig)); | |
2897 | memset (type_sig, 0, sizeof (*type_sig)); | |
2898 | type_sig->signature = signature; | |
2899 | type_sig->offset = offset; | |
2900 | type_sig->type_offset = type_offset; | |
ca1f3406 | 2901 | type_sig->per_cu.objfile = objfile; |
1fd400ff | 2902 | type_sig->per_cu.from_debug_types = 1; |
348e048f DE |
2903 | |
2904 | slot = htab_find_slot (types_htab, type_sig, INSERT); | |
2905 | gdb_assert (slot != NULL); | |
2906 | *slot = type_sig; | |
2907 | ||
2908 | if (dwarf2_die_debug) | |
2909 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", | |
2910 | offset, phex (signature, sizeof (signature))); | |
2911 | ||
2912 | info_ptr = info_ptr + initial_length_size + length; | |
2913 | } | |
2914 | ||
2915 | dwarf2_per_objfile->signatured_types = types_htab; | |
2916 | ||
1fd400ff TT |
2917 | dwarf2_per_objfile->n_type_comp_units = htab_elements (types_htab); |
2918 | dwarf2_per_objfile->type_comp_units | |
2919 | = obstack_alloc (&objfile->objfile_obstack, | |
2920 | dwarf2_per_objfile->n_type_comp_units | |
2921 | * sizeof (struct dwarf2_per_cu_data *)); | |
2922 | iter = &dwarf2_per_objfile->type_comp_units[0]; | |
2923 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_list, &iter); | |
2924 | gdb_assert (iter - &dwarf2_per_objfile->type_comp_units[0] | |
2925 | == dwarf2_per_objfile->n_type_comp_units); | |
2926 | ||
348e048f DE |
2927 | return 1; |
2928 | } | |
2929 | ||
2930 | /* Lookup a signature based type. | |
2931 | Returns NULL if SIG is not present in the table. */ | |
2932 | ||
2933 | static struct signatured_type * | |
2934 | lookup_signatured_type (struct objfile *objfile, ULONGEST sig) | |
2935 | { | |
2936 | struct signatured_type find_entry, *entry; | |
2937 | ||
2938 | if (dwarf2_per_objfile->signatured_types == NULL) | |
2939 | { | |
2940 | complaint (&symfile_complaints, | |
2941 | _("missing `.debug_types' section for DW_FORM_sig8 die")); | |
2942 | return 0; | |
2943 | } | |
2944 | ||
2945 | find_entry.signature = sig; | |
2946 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
2947 | return entry; | |
2948 | } | |
2949 | ||
d85a05f0 DJ |
2950 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
2951 | ||
2952 | static void | |
2953 | init_cu_die_reader (struct die_reader_specs *reader, | |
2954 | struct dwarf2_cu *cu) | |
2955 | { | |
2956 | reader->abfd = cu->objfile->obfd; | |
2957 | reader->cu = cu; | |
2958 | if (cu->per_cu->from_debug_types) | |
be391dca TT |
2959 | { |
2960 | gdb_assert (dwarf2_per_objfile->types.readin); | |
2961 | reader->buffer = dwarf2_per_objfile->types.buffer; | |
2962 | } | |
d85a05f0 | 2963 | else |
be391dca TT |
2964 | { |
2965 | gdb_assert (dwarf2_per_objfile->info.readin); | |
2966 | reader->buffer = dwarf2_per_objfile->info.buffer; | |
2967 | } | |
d85a05f0 DJ |
2968 | } |
2969 | ||
2970 | /* Find the base address of the compilation unit for range lists and | |
2971 | location lists. It will normally be specified by DW_AT_low_pc. | |
2972 | In DWARF-3 draft 4, the base address could be overridden by | |
2973 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
2974 | compilation units with discontinuous ranges. */ | |
2975 | ||
2976 | static void | |
2977 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
2978 | { | |
2979 | struct attribute *attr; | |
2980 | ||
2981 | cu->base_known = 0; | |
2982 | cu->base_address = 0; | |
2983 | ||
2984 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
2985 | if (attr) | |
2986 | { | |
2987 | cu->base_address = DW_ADDR (attr); | |
2988 | cu->base_known = 1; | |
2989 | } | |
2990 | else | |
2991 | { | |
2992 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
2993 | if (attr) | |
2994 | { | |
2995 | cu->base_address = DW_ADDR (attr); | |
2996 | cu->base_known = 1; | |
2997 | } | |
2998 | } | |
2999 | } | |
3000 | ||
348e048f DE |
3001 | /* Subroutine of process_type_comp_unit and dwarf2_build_psymtabs_hard |
3002 | to combine the common parts. | |
93311388 | 3003 | Process a compilation unit for a psymtab. |
348e048f DE |
3004 | BUFFER is a pointer to the beginning of the dwarf section buffer, |
3005 | either .debug_info or debug_types. | |
93311388 DE |
3006 | INFO_PTR is a pointer to the start of the CU. |
3007 | Returns a pointer to the next CU. */ | |
aaa75496 | 3008 | |
93311388 DE |
3009 | static gdb_byte * |
3010 | process_psymtab_comp_unit (struct objfile *objfile, | |
3011 | struct dwarf2_per_cu_data *this_cu, | |
3012 | gdb_byte *buffer, gdb_byte *info_ptr, | |
3013 | unsigned int buffer_size) | |
c906108c | 3014 | { |
c906108c | 3015 | bfd *abfd = objfile->obfd; |
93311388 | 3016 | gdb_byte *beg_of_comp_unit = info_ptr; |
d85a05f0 | 3017 | struct die_info *comp_unit_die; |
c906108c | 3018 | struct partial_symtab *pst; |
5734ee8b | 3019 | CORE_ADDR baseaddr; |
93311388 DE |
3020 | struct cleanup *back_to_inner; |
3021 | struct dwarf2_cu cu; | |
d85a05f0 DJ |
3022 | int has_children, has_pc_info; |
3023 | struct attribute *attr; | |
d85a05f0 DJ |
3024 | CORE_ADDR best_lowpc = 0, best_highpc = 0; |
3025 | struct die_reader_specs reader_specs; | |
c906108c | 3026 | |
93311388 DE |
3027 | memset (&cu, 0, sizeof (cu)); |
3028 | cu.objfile = objfile; | |
3029 | obstack_init (&cu.comp_unit_obstack); | |
c906108c | 3030 | |
93311388 | 3031 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); |
ae038cb0 | 3032 | |
93311388 DE |
3033 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, |
3034 | buffer, buffer_size, | |
3035 | abfd); | |
10b3939b | 3036 | |
93311388 DE |
3037 | /* Complete the cu_header. */ |
3038 | cu.header.offset = beg_of_comp_unit - buffer; | |
3039 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; | |
ff013f42 | 3040 | |
93311388 | 3041 | cu.list_in_scope = &file_symbols; |
af703f96 | 3042 | |
328c9494 DJ |
3043 | /* If this compilation unit was already read in, free the |
3044 | cached copy in order to read it in again. This is | |
3045 | necessary because we skipped some symbols when we first | |
3046 | read in the compilation unit (see load_partial_dies). | |
3047 | This problem could be avoided, but the benefit is | |
3048 | unclear. */ | |
3049 | if (this_cu->cu != NULL) | |
3050 | free_one_cached_comp_unit (this_cu->cu); | |
3051 | ||
3052 | /* Note that this is a pointer to our stack frame, being | |
3053 | added to a global data structure. It will be cleaned up | |
3054 | in free_stack_comp_unit when we finish with this | |
3055 | compilation unit. */ | |
3056 | this_cu->cu = &cu; | |
d85a05f0 DJ |
3057 | cu.per_cu = this_cu; |
3058 | ||
93311388 DE |
3059 | /* Read the abbrevs for this compilation unit into a table. */ |
3060 | dwarf2_read_abbrevs (abfd, &cu); | |
3061 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
af703f96 | 3062 | |
93311388 | 3063 | /* Read the compilation unit die. */ |
348e048f DE |
3064 | if (this_cu->from_debug_types) |
3065 | info_ptr += 8 /*signature*/ + cu.header.offset_size; | |
d85a05f0 DJ |
3066 | init_cu_die_reader (&reader_specs, &cu); |
3067 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
3068 | &has_children); | |
93311388 | 3069 | |
348e048f DE |
3070 | if (this_cu->from_debug_types) |
3071 | { | |
3072 | /* offset,length haven't been set yet for type units. */ | |
3073 | this_cu->offset = cu.header.offset; | |
3074 | this_cu->length = cu.header.length + cu.header.initial_length_size; | |
3075 | } | |
d85a05f0 | 3076 | else if (comp_unit_die->tag == DW_TAG_partial_unit) |
c906108c | 3077 | { |
93311388 DE |
3078 | info_ptr = (beg_of_comp_unit + cu.header.length |
3079 | + cu.header.initial_length_size); | |
3080 | do_cleanups (back_to_inner); | |
3081 | return info_ptr; | |
3082 | } | |
72bf9492 | 3083 | |
93311388 | 3084 | /* Set the language we're debugging. */ |
d85a05f0 DJ |
3085 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, &cu); |
3086 | if (attr) | |
3087 | set_cu_language (DW_UNSND (attr), &cu); | |
3088 | else | |
3089 | set_cu_language (language_minimal, &cu); | |
c906108c | 3090 | |
93311388 | 3091 | /* Allocate a new partial symbol table structure. */ |
d85a05f0 | 3092 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, &cu); |
93311388 | 3093 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
d85a05f0 | 3094 | (attr != NULL) ? DW_STRING (attr) : "", |
93311388 DE |
3095 | /* TEXTLOW and TEXTHIGH are set below. */ |
3096 | 0, | |
3097 | objfile->global_psymbols.next, | |
3098 | objfile->static_psymbols.next); | |
72bf9492 | 3099 | |
d85a05f0 DJ |
3100 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, &cu); |
3101 | if (attr != NULL) | |
3102 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 3103 | |
e38df1d0 | 3104 | pst->read_symtab_private = this_cu; |
72bf9492 | 3105 | |
93311388 | 3106 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 3107 | |
93311388 DE |
3108 | /* Store the function that reads in the rest of the symbol table */ |
3109 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
57349743 | 3110 | |
9291a0cd | 3111 | this_cu->v.psymtab = pst; |
c906108c | 3112 | |
d85a05f0 DJ |
3113 | dwarf2_find_base_address (comp_unit_die, &cu); |
3114 | ||
93311388 DE |
3115 | /* Possibly set the default values of LOWPC and HIGHPC from |
3116 | `DW_AT_ranges'. */ | |
d85a05f0 DJ |
3117 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
3118 | &best_highpc, &cu, pst); | |
3119 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
93311388 DE |
3120 | /* Store the contiguous range if it is not empty; it can be empty for |
3121 | CUs with no code. */ | |
3122 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
3123 | best_lowpc + baseaddr, |
3124 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
3125 | |
3126 | /* Check if comp unit has_children. | |
3127 | If so, read the rest of the partial symbols from this comp unit. | |
3128 | If not, there's no more debug_info for this comp unit. */ | |
d85a05f0 | 3129 | if (has_children) |
93311388 DE |
3130 | { |
3131 | struct partial_die_info *first_die; | |
3132 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 3133 | |
93311388 DE |
3134 | lowpc = ((CORE_ADDR) -1); |
3135 | highpc = ((CORE_ADDR) 0); | |
c906108c | 3136 | |
93311388 | 3137 | first_die = load_partial_dies (abfd, buffer, info_ptr, 1, &cu); |
c906108c | 3138 | |
93311388 | 3139 | scan_partial_symbols (first_die, &lowpc, &highpc, |
d85a05f0 | 3140 | ! has_pc_info, &cu); |
57c22c6c | 3141 | |
93311388 DE |
3142 | /* If we didn't find a lowpc, set it to highpc to avoid |
3143 | complaints from `maint check'. */ | |
3144 | if (lowpc == ((CORE_ADDR) -1)) | |
3145 | lowpc = highpc; | |
10b3939b | 3146 | |
93311388 DE |
3147 | /* If the compilation unit didn't have an explicit address range, |
3148 | then use the information extracted from its child dies. */ | |
d85a05f0 | 3149 | if (! has_pc_info) |
93311388 | 3150 | { |
d85a05f0 DJ |
3151 | best_lowpc = lowpc; |
3152 | best_highpc = highpc; | |
93311388 DE |
3153 | } |
3154 | } | |
d85a05f0 DJ |
3155 | pst->textlow = best_lowpc + baseaddr; |
3156 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 3157 | |
93311388 DE |
3158 | pst->n_global_syms = objfile->global_psymbols.next - |
3159 | (objfile->global_psymbols.list + pst->globals_offset); | |
3160 | pst->n_static_syms = objfile->static_psymbols.next - | |
3161 | (objfile->static_psymbols.list + pst->statics_offset); | |
3162 | sort_pst_symbols (pst); | |
c906108c | 3163 | |
93311388 DE |
3164 | info_ptr = (beg_of_comp_unit + cu.header.length |
3165 | + cu.header.initial_length_size); | |
ae038cb0 | 3166 | |
348e048f DE |
3167 | if (this_cu->from_debug_types) |
3168 | { | |
3169 | /* It's not clear we want to do anything with stmt lists here. | |
3170 | Waiting to see what gcc ultimately does. */ | |
3171 | } | |
d85a05f0 | 3172 | else |
93311388 DE |
3173 | { |
3174 | /* Get the list of files included in the current compilation unit, | |
3175 | and build a psymtab for each of them. */ | |
d85a05f0 | 3176 | dwarf2_build_include_psymtabs (&cu, comp_unit_die, pst); |
93311388 | 3177 | } |
ae038cb0 | 3178 | |
93311388 | 3179 | do_cleanups (back_to_inner); |
ae038cb0 | 3180 | |
93311388 DE |
3181 | return info_ptr; |
3182 | } | |
ff013f42 | 3183 | |
348e048f DE |
3184 | /* Traversal function for htab_traverse_noresize. |
3185 | Process one .debug_types comp-unit. */ | |
3186 | ||
3187 | static int | |
3188 | process_type_comp_unit (void **slot, void *info) | |
3189 | { | |
3190 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
3191 | struct objfile *objfile = (struct objfile *) info; | |
3192 | struct dwarf2_per_cu_data *this_cu; | |
3193 | ||
3194 | this_cu = &entry->per_cu; | |
348e048f | 3195 | |
be391dca | 3196 | gdb_assert (dwarf2_per_objfile->types.readin); |
348e048f DE |
3197 | process_psymtab_comp_unit (objfile, this_cu, |
3198 | dwarf2_per_objfile->types.buffer, | |
3199 | dwarf2_per_objfile->types.buffer + entry->offset, | |
3200 | dwarf2_per_objfile->types.size); | |
3201 | ||
3202 | return 1; | |
3203 | } | |
3204 | ||
3205 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
3206 | Build partial symbol tables for the .debug_types comp-units. */ | |
3207 | ||
3208 | static void | |
3209 | build_type_psymtabs (struct objfile *objfile) | |
3210 | { | |
3211 | if (! create_debug_types_hash_table (objfile)) | |
3212 | return; | |
3213 | ||
3214 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
3215 | process_type_comp_unit, objfile); | |
3216 | } | |
3217 | ||
60606b2c TT |
3218 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
3219 | ||
3220 | static void | |
3221 | psymtabs_addrmap_cleanup (void *o) | |
3222 | { | |
3223 | struct objfile *objfile = o; | |
ec61707d | 3224 | |
60606b2c TT |
3225 | objfile->psymtabs_addrmap = NULL; |
3226 | } | |
3227 | ||
93311388 DE |
3228 | /* Build the partial symbol table by doing a quick pass through the |
3229 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 3230 | |
93311388 | 3231 | static void |
c67a9c90 | 3232 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 3233 | { |
93311388 | 3234 | gdb_byte *info_ptr; |
60606b2c TT |
3235 | struct cleanup *back_to, *addrmap_cleanup; |
3236 | struct obstack temp_obstack; | |
93311388 | 3237 | |
98bfdba5 PA |
3238 | dwarf2_per_objfile->reading_partial_symbols = 1; |
3239 | ||
be391dca | 3240 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
93311388 | 3241 | info_ptr = dwarf2_per_objfile->info.buffer; |
91c24f0a | 3242 | |
93311388 DE |
3243 | /* Any cached compilation units will be linked by the per-objfile |
3244 | read_in_chain. Make sure to free them when we're done. */ | |
3245 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 3246 | |
348e048f DE |
3247 | build_type_psymtabs (objfile); |
3248 | ||
93311388 | 3249 | create_all_comp_units (objfile); |
c906108c | 3250 | |
60606b2c TT |
3251 | /* Create a temporary address map on a temporary obstack. We later |
3252 | copy this to the final obstack. */ | |
3253 | obstack_init (&temp_obstack); | |
3254 | make_cleanup_obstack_free (&temp_obstack); | |
3255 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
3256 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 3257 | |
93311388 DE |
3258 | /* Since the objects we're extracting from .debug_info vary in |
3259 | length, only the individual functions to extract them (like | |
3260 | read_comp_unit_head and load_partial_die) can really know whether | |
3261 | the buffer is large enough to hold another complete object. | |
c906108c | 3262 | |
93311388 DE |
3263 | At the moment, they don't actually check that. If .debug_info |
3264 | holds just one extra byte after the last compilation unit's dies, | |
3265 | then read_comp_unit_head will happily read off the end of the | |
3266 | buffer. read_partial_die is similarly casual. Those functions | |
3267 | should be fixed. | |
c906108c | 3268 | |
93311388 DE |
3269 | For this loop condition, simply checking whether there's any data |
3270 | left at all should be sufficient. */ | |
c906108c | 3271 | |
93311388 DE |
3272 | while (info_ptr < (dwarf2_per_objfile->info.buffer |
3273 | + dwarf2_per_objfile->info.size)) | |
3274 | { | |
3275 | struct dwarf2_per_cu_data *this_cu; | |
dd373385 | 3276 | |
93311388 DE |
3277 | this_cu = dwarf2_find_comp_unit (info_ptr - dwarf2_per_objfile->info.buffer, |
3278 | objfile); | |
aaa75496 | 3279 | |
93311388 DE |
3280 | info_ptr = process_psymtab_comp_unit (objfile, this_cu, |
3281 | dwarf2_per_objfile->info.buffer, | |
3282 | info_ptr, | |
3283 | dwarf2_per_objfile->info.size); | |
c906108c | 3284 | } |
ff013f42 JK |
3285 | |
3286 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, | |
3287 | &objfile->objfile_obstack); | |
60606b2c | 3288 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 3289 | |
ae038cb0 DJ |
3290 | do_cleanups (back_to); |
3291 | } | |
3292 | ||
93311388 | 3293 | /* Load the partial DIEs for a secondary CU into memory. */ |
ae038cb0 DJ |
3294 | |
3295 | static void | |
93311388 DE |
3296 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu, |
3297 | struct objfile *objfile) | |
ae038cb0 DJ |
3298 | { |
3299 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 3300 | gdb_byte *info_ptr, *beg_of_comp_unit; |
d85a05f0 | 3301 | struct die_info *comp_unit_die; |
ae038cb0 | 3302 | struct dwarf2_cu *cu; |
1d9ec526 | 3303 | struct cleanup *free_abbrevs_cleanup, *free_cu_cleanup = NULL; |
d85a05f0 DJ |
3304 | struct attribute *attr; |
3305 | int has_children; | |
3306 | struct die_reader_specs reader_specs; | |
98bfdba5 | 3307 | int read_cu = 0; |
ae038cb0 | 3308 | |
348e048f DE |
3309 | gdb_assert (! this_cu->from_debug_types); |
3310 | ||
be391dca | 3311 | gdb_assert (dwarf2_per_objfile->info.readin); |
dce234bc | 3312 | info_ptr = dwarf2_per_objfile->info.buffer + this_cu->offset; |
ae038cb0 DJ |
3313 | beg_of_comp_unit = info_ptr; |
3314 | ||
98bfdba5 PA |
3315 | if (this_cu->cu == NULL) |
3316 | { | |
3317 | cu = alloc_one_comp_unit (objfile); | |
ae038cb0 | 3318 | |
98bfdba5 | 3319 | read_cu = 1; |
ae038cb0 | 3320 | |
98bfdba5 PA |
3321 | /* If an error occurs while loading, release our storage. */ |
3322 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
328c9494 | 3323 | |
98bfdba5 PA |
3324 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, |
3325 | dwarf2_per_objfile->info.buffer, | |
3326 | dwarf2_per_objfile->info.size, | |
3327 | abfd); | |
ae038cb0 | 3328 | |
98bfdba5 PA |
3329 | /* Complete the cu_header. */ |
3330 | cu->header.offset = this_cu->offset; | |
3331 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; | |
3332 | ||
3333 | /* Link this compilation unit into the compilation unit tree. */ | |
3334 | this_cu->cu = cu; | |
3335 | cu->per_cu = this_cu; | |
98bfdba5 PA |
3336 | |
3337 | /* Link this CU into read_in_chain. */ | |
3338 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
3339 | dwarf2_per_objfile->read_in_chain = this_cu; | |
3340 | } | |
3341 | else | |
3342 | { | |
3343 | cu = this_cu->cu; | |
3344 | info_ptr += cu->header.first_die_offset; | |
3345 | } | |
ae038cb0 DJ |
3346 | |
3347 | /* Read the abbrevs for this compilation unit into a table. */ | |
98bfdba5 | 3348 | gdb_assert (cu->dwarf2_abbrevs == NULL); |
ae038cb0 | 3349 | dwarf2_read_abbrevs (abfd, cu); |
98bfdba5 | 3350 | free_abbrevs_cleanup = make_cleanup (dwarf2_free_abbrev_table, cu); |
ae038cb0 DJ |
3351 | |
3352 | /* Read the compilation unit die. */ | |
d85a05f0 DJ |
3353 | init_cu_die_reader (&reader_specs, cu); |
3354 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
3355 | &has_children); | |
ae038cb0 DJ |
3356 | |
3357 | /* Set the language we're debugging. */ | |
d85a05f0 DJ |
3358 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); |
3359 | if (attr) | |
3360 | set_cu_language (DW_UNSND (attr), cu); | |
3361 | else | |
3362 | set_cu_language (language_minimal, cu); | |
ae038cb0 | 3363 | |
ae038cb0 DJ |
3364 | /* Check if comp unit has_children. |
3365 | If so, read the rest of the partial symbols from this comp unit. | |
3366 | If not, there's no more debug_info for this comp unit. */ | |
d85a05f0 | 3367 | if (has_children) |
93311388 | 3368 | load_partial_dies (abfd, dwarf2_per_objfile->info.buffer, info_ptr, 0, cu); |
ae038cb0 | 3369 | |
98bfdba5 PA |
3370 | do_cleanups (free_abbrevs_cleanup); |
3371 | ||
3372 | if (read_cu) | |
3373 | { | |
3374 | /* We've successfully allocated this compilation unit. Let our | |
3375 | caller clean it up when finished with it. */ | |
3376 | discard_cleanups (free_cu_cleanup); | |
3377 | } | |
ae038cb0 DJ |
3378 | } |
3379 | ||
3380 | /* Create a list of all compilation units in OBJFILE. We do this only | |
3381 | if an inter-comp-unit reference is found; presumably if there is one, | |
3382 | there will be many, and one will occur early in the .debug_info section. | |
3383 | So there's no point in building this list incrementally. */ | |
3384 | ||
3385 | static void | |
3386 | create_all_comp_units (struct objfile *objfile) | |
3387 | { | |
3388 | int n_allocated; | |
3389 | int n_comp_units; | |
3390 | struct dwarf2_per_cu_data **all_comp_units; | |
be391dca TT |
3391 | gdb_byte *info_ptr; |
3392 | ||
3393 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
3394 | info_ptr = dwarf2_per_objfile->info.buffer; | |
ae038cb0 DJ |
3395 | |
3396 | n_comp_units = 0; | |
3397 | n_allocated = 10; | |
3398 | all_comp_units = xmalloc (n_allocated | |
3399 | * sizeof (struct dwarf2_per_cu_data *)); | |
6e70227d | 3400 | |
dce234bc | 3401 | while (info_ptr < dwarf2_per_objfile->info.buffer + dwarf2_per_objfile->info.size) |
ae038cb0 | 3402 | { |
c764a876 | 3403 | unsigned int length, initial_length_size; |
ae038cb0 | 3404 | struct dwarf2_per_cu_data *this_cu; |
c764a876 | 3405 | unsigned int offset; |
ae038cb0 | 3406 | |
dce234bc | 3407 | offset = info_ptr - dwarf2_per_objfile->info.buffer; |
ae038cb0 DJ |
3408 | |
3409 | /* Read just enough information to find out where the next | |
3410 | compilation unit is. */ | |
c764a876 DE |
3411 | length = read_initial_length (objfile->obfd, info_ptr, |
3412 | &initial_length_size); | |
ae038cb0 DJ |
3413 | |
3414 | /* Save the compilation unit for later lookup. */ | |
3415 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
3416 | sizeof (struct dwarf2_per_cu_data)); | |
3417 | memset (this_cu, 0, sizeof (*this_cu)); | |
3418 | this_cu->offset = offset; | |
c764a876 | 3419 | this_cu->length = length + initial_length_size; |
9291a0cd | 3420 | this_cu->objfile = objfile; |
ae038cb0 DJ |
3421 | |
3422 | if (n_comp_units == n_allocated) | |
3423 | { | |
3424 | n_allocated *= 2; | |
3425 | all_comp_units = xrealloc (all_comp_units, | |
3426 | n_allocated | |
3427 | * sizeof (struct dwarf2_per_cu_data *)); | |
3428 | } | |
3429 | all_comp_units[n_comp_units++] = this_cu; | |
3430 | ||
3431 | info_ptr = info_ptr + this_cu->length; | |
3432 | } | |
3433 | ||
3434 | dwarf2_per_objfile->all_comp_units | |
3435 | = obstack_alloc (&objfile->objfile_obstack, | |
3436 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
3437 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
3438 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
3439 | xfree (all_comp_units); | |
3440 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
3441 | } |
3442 | ||
5734ee8b DJ |
3443 | /* Process all loaded DIEs for compilation unit CU, starting at |
3444 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
3445 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
3446 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
3447 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
3448 | and record the covered ranges in the addrmap. */ | |
c906108c | 3449 | |
72bf9492 DJ |
3450 | static void |
3451 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 3452 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 3453 | { |
72bf9492 | 3454 | struct partial_die_info *pdi; |
c906108c | 3455 | |
91c24f0a DC |
3456 | /* Now, march along the PDI's, descending into ones which have |
3457 | interesting children but skipping the children of the other ones, | |
3458 | until we reach the end of the compilation unit. */ | |
c906108c | 3459 | |
72bf9492 | 3460 | pdi = first_die; |
91c24f0a | 3461 | |
72bf9492 DJ |
3462 | while (pdi != NULL) |
3463 | { | |
3464 | fixup_partial_die (pdi, cu); | |
c906108c | 3465 | |
f55ee35c | 3466 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
3467 | children, so we need to look at them. Ditto for anonymous |
3468 | enums. */ | |
933c6fe4 | 3469 | |
72bf9492 | 3470 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
f55ee35c | 3471 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type) |
c906108c | 3472 | { |
72bf9492 | 3473 | switch (pdi->tag) |
c906108c SS |
3474 | { |
3475 | case DW_TAG_subprogram: | |
5734ee8b | 3476 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 3477 | break; |
72929c62 | 3478 | case DW_TAG_constant: |
c906108c SS |
3479 | case DW_TAG_variable: |
3480 | case DW_TAG_typedef: | |
91c24f0a | 3481 | case DW_TAG_union_type: |
72bf9492 | 3482 | if (!pdi->is_declaration) |
63d06c5c | 3483 | { |
72bf9492 | 3484 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
3485 | } |
3486 | break; | |
c906108c | 3487 | case DW_TAG_class_type: |
680b30c7 | 3488 | case DW_TAG_interface_type: |
c906108c | 3489 | case DW_TAG_structure_type: |
72bf9492 | 3490 | if (!pdi->is_declaration) |
c906108c | 3491 | { |
72bf9492 | 3492 | add_partial_symbol (pdi, cu); |
c906108c SS |
3493 | } |
3494 | break; | |
91c24f0a | 3495 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
3496 | if (!pdi->is_declaration) |
3497 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
3498 | break; |
3499 | case DW_TAG_base_type: | |
a02abb62 | 3500 | case DW_TAG_subrange_type: |
c906108c | 3501 | /* File scope base type definitions are added to the partial |
c5aa993b | 3502 | symbol table. */ |
72bf9492 | 3503 | add_partial_symbol (pdi, cu); |
c906108c | 3504 | break; |
d9fa45fe | 3505 | case DW_TAG_namespace: |
5734ee8b | 3506 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 3507 | break; |
5d7cb8df JK |
3508 | case DW_TAG_module: |
3509 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
3510 | break; | |
c906108c SS |
3511 | default: |
3512 | break; | |
3513 | } | |
3514 | } | |
3515 | ||
72bf9492 DJ |
3516 | /* If the die has a sibling, skip to the sibling. */ |
3517 | ||
3518 | pdi = pdi->die_sibling; | |
3519 | } | |
3520 | } | |
3521 | ||
3522 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 3523 | |
72bf9492 | 3524 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
3525 | name is concatenated with "::" and the partial DIE's name. For |
3526 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
3527 | Enumerators are an exception; they use the scope of their parent |
3528 | enumeration type, i.e. the name of the enumeration type is not | |
3529 | prepended to the enumerator. | |
91c24f0a | 3530 | |
72bf9492 DJ |
3531 | There are two complexities. One is DW_AT_specification; in this |
3532 | case "parent" means the parent of the target of the specification, | |
3533 | instead of the direct parent of the DIE. The other is compilers | |
3534 | which do not emit DW_TAG_namespace; in this case we try to guess | |
3535 | the fully qualified name of structure types from their members' | |
3536 | linkage names. This must be done using the DIE's children rather | |
3537 | than the children of any DW_AT_specification target. We only need | |
3538 | to do this for structures at the top level, i.e. if the target of | |
3539 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
3540 | have a parent. */ | |
3541 | ||
3542 | /* Compute the scope prefix associated with PDI's parent, in | |
3543 | compilation unit CU. The result will be allocated on CU's | |
3544 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
3545 | field. NULL is returned if no prefix is necessary. */ | |
3546 | static char * | |
3547 | partial_die_parent_scope (struct partial_die_info *pdi, | |
3548 | struct dwarf2_cu *cu) | |
3549 | { | |
3550 | char *grandparent_scope; | |
3551 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 3552 | |
72bf9492 DJ |
3553 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
3554 | then this means the parent of the specification DIE. */ | |
3555 | ||
3556 | real_pdi = pdi; | |
72bf9492 | 3557 | while (real_pdi->has_specification) |
10b3939b | 3558 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
3559 | |
3560 | parent = real_pdi->die_parent; | |
3561 | if (parent == NULL) | |
3562 | return NULL; | |
3563 | ||
3564 | if (parent->scope_set) | |
3565 | return parent->scope; | |
3566 | ||
3567 | fixup_partial_die (parent, cu); | |
3568 | ||
10b3939b | 3569 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 3570 | |
acebe513 UW |
3571 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
3572 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
3573 | Work around this problem here. */ | |
3574 | if (cu->language == language_cplus | |
6e70227d | 3575 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
3576 | && strcmp (parent->name, "::") == 0 |
3577 | && grandparent_scope == NULL) | |
3578 | { | |
3579 | parent->scope = NULL; | |
3580 | parent->scope_set = 1; | |
3581 | return NULL; | |
3582 | } | |
3583 | ||
72bf9492 | 3584 | if (parent->tag == DW_TAG_namespace |
f55ee35c | 3585 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
3586 | || parent->tag == DW_TAG_structure_type |
3587 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 3588 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
3589 | || parent->tag == DW_TAG_union_type |
3590 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
3591 | { |
3592 | if (grandparent_scope == NULL) | |
3593 | parent->scope = parent->name; | |
3594 | else | |
987504bb | 3595 | parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope, |
f55ee35c | 3596 | parent->name, 0, cu); |
72bf9492 | 3597 | } |
ceeb3d5a | 3598 | else if (parent->tag == DW_TAG_enumerator) |
72bf9492 DJ |
3599 | /* Enumerators should not get the name of the enumeration as a prefix. */ |
3600 | parent->scope = grandparent_scope; | |
3601 | else | |
3602 | { | |
3603 | /* FIXME drow/2004-04-01: What should we be doing with | |
3604 | function-local names? For partial symbols, we should probably be | |
3605 | ignoring them. */ | |
3606 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3607 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
3608 | parent->tag, pdi->offset); |
3609 | parent->scope = grandparent_scope; | |
c906108c SS |
3610 | } |
3611 | ||
72bf9492 DJ |
3612 | parent->scope_set = 1; |
3613 | return parent->scope; | |
3614 | } | |
3615 | ||
3616 | /* Return the fully scoped name associated with PDI, from compilation unit | |
3617 | CU. The result will be allocated with malloc. */ | |
3618 | static char * | |
3619 | partial_die_full_name (struct partial_die_info *pdi, | |
3620 | struct dwarf2_cu *cu) | |
3621 | { | |
3622 | char *parent_scope; | |
3623 | ||
98bfdba5 PA |
3624 | /* If this is a template instantiation, we can not work out the |
3625 | template arguments from partial DIEs. So, unfortunately, we have | |
3626 | to go through the full DIEs. At least any work we do building | |
3627 | types here will be reused if full symbols are loaded later. */ | |
3628 | if (pdi->has_template_arguments) | |
3629 | { | |
3630 | fixup_partial_die (pdi, cu); | |
3631 | ||
3632 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
3633 | { | |
3634 | struct die_info *die; | |
3635 | struct attribute attr; | |
3636 | struct dwarf2_cu *ref_cu = cu; | |
3637 | ||
3638 | attr.name = 0; | |
3639 | attr.form = DW_FORM_ref_addr; | |
3640 | attr.u.addr = pdi->offset; | |
3641 | die = follow_die_ref (NULL, &attr, &ref_cu); | |
3642 | ||
3643 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
3644 | } | |
3645 | } | |
3646 | ||
72bf9492 DJ |
3647 | parent_scope = partial_die_parent_scope (pdi, cu); |
3648 | if (parent_scope == NULL) | |
3649 | return NULL; | |
3650 | else | |
f55ee35c | 3651 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
3652 | } |
3653 | ||
3654 | static void | |
72bf9492 | 3655 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 3656 | { |
e7c27a73 | 3657 | struct objfile *objfile = cu->objfile; |
c906108c | 3658 | CORE_ADDR addr = 0; |
decbce07 | 3659 | char *actual_name = NULL; |
5c4e30ca | 3660 | const struct partial_symbol *psym = NULL; |
e142c38c | 3661 | CORE_ADDR baseaddr; |
72bf9492 | 3662 | int built_actual_name = 0; |
e142c38c DJ |
3663 | |
3664 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 3665 | |
94af9270 KS |
3666 | actual_name = partial_die_full_name (pdi, cu); |
3667 | if (actual_name) | |
3668 | built_actual_name = 1; | |
63d06c5c | 3669 | |
72bf9492 DJ |
3670 | if (actual_name == NULL) |
3671 | actual_name = pdi->name; | |
3672 | ||
c906108c SS |
3673 | switch (pdi->tag) |
3674 | { | |
3675 | case DW_TAG_subprogram: | |
2cfa0c8d | 3676 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 3677 | { |
2cfa0c8d JB |
3678 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
3679 | of the global scope. But in Ada, we want to be able to access | |
3680 | nested procedures globally. So all Ada subprograms are stored | |
3681 | in the global scope. */ | |
38d518c9 | 3682 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 3683 | mst_text, objfile); */ |
38d518c9 | 3684 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3685 | built_actual_name, |
5c4e30ca DC |
3686 | VAR_DOMAIN, LOC_BLOCK, |
3687 | &objfile->global_psymbols, | |
3688 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 3689 | cu->language, objfile); |
c906108c SS |
3690 | } |
3691 | else | |
3692 | { | |
38d518c9 | 3693 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 3694 | mst_file_text, objfile); */ |
38d518c9 | 3695 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3696 | built_actual_name, |
5c4e30ca DC |
3697 | VAR_DOMAIN, LOC_BLOCK, |
3698 | &objfile->static_psymbols, | |
3699 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 3700 | cu->language, objfile); |
c906108c SS |
3701 | } |
3702 | break; | |
72929c62 JB |
3703 | case DW_TAG_constant: |
3704 | { | |
3705 | struct psymbol_allocation_list *list; | |
3706 | ||
3707 | if (pdi->is_external) | |
3708 | list = &objfile->global_psymbols; | |
3709 | else | |
3710 | list = &objfile->static_psymbols; | |
3711 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), | |
3712 | built_actual_name, VAR_DOMAIN, LOC_STATIC, | |
3713 | list, 0, 0, cu->language, objfile); | |
3714 | ||
3715 | } | |
3716 | break; | |
c906108c | 3717 | case DW_TAG_variable: |
caac4577 JG |
3718 | if (pdi->locdesc) |
3719 | addr = decode_locdesc (pdi->locdesc, cu); | |
3720 | ||
3721 | if (pdi->locdesc | |
3722 | && addr == 0 | |
3723 | && !dwarf2_per_objfile->has_section_at_zero) | |
3724 | { | |
3725 | /* A global or static variable may also have been stripped | |
3726 | out by the linker if unused, in which case its address | |
3727 | will be nullified; do not add such variables into partial | |
3728 | symbol table then. */ | |
3729 | } | |
3730 | else if (pdi->is_external) | |
c906108c SS |
3731 | { |
3732 | /* Global Variable. | |
3733 | Don't enter into the minimal symbol tables as there is | |
3734 | a minimal symbol table entry from the ELF symbols already. | |
3735 | Enter into partial symbol table if it has a location | |
3736 | descriptor or a type. | |
3737 | If the location descriptor is missing, new_symbol will create | |
3738 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
3739 | be determined from the minimal symbol table whenever the variable | |
3740 | is referenced. | |
3741 | The address for the partial symbol table entry is not | |
3742 | used by GDB, but it comes in handy for debugging partial symbol | |
3743 | table building. */ | |
3744 | ||
c906108c | 3745 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 3746 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3747 | built_actual_name, |
5c4e30ca DC |
3748 | VAR_DOMAIN, LOC_STATIC, |
3749 | &objfile->global_psymbols, | |
3750 | 0, addr + baseaddr, | |
e142c38c | 3751 | cu->language, objfile); |
c906108c SS |
3752 | } |
3753 | else | |
3754 | { | |
3755 | /* Static Variable. Skip symbols without location descriptors. */ | |
3756 | if (pdi->locdesc == NULL) | |
decbce07 MS |
3757 | { |
3758 | if (built_actual_name) | |
3759 | xfree (actual_name); | |
3760 | return; | |
3761 | } | |
38d518c9 | 3762 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 3763 | mst_file_data, objfile); */ |
38d518c9 | 3764 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3765 | built_actual_name, |
5c4e30ca DC |
3766 | VAR_DOMAIN, LOC_STATIC, |
3767 | &objfile->static_psymbols, | |
3768 | 0, addr + baseaddr, | |
e142c38c | 3769 | cu->language, objfile); |
c906108c SS |
3770 | } |
3771 | break; | |
3772 | case DW_TAG_typedef: | |
3773 | case DW_TAG_base_type: | |
a02abb62 | 3774 | case DW_TAG_subrange_type: |
38d518c9 | 3775 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3776 | built_actual_name, |
176620f1 | 3777 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 3778 | &objfile->static_psymbols, |
e142c38c | 3779 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 3780 | break; |
72bf9492 DJ |
3781 | case DW_TAG_namespace: |
3782 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
04a679b8 | 3783 | built_actual_name, |
72bf9492 DJ |
3784 | VAR_DOMAIN, LOC_TYPEDEF, |
3785 | &objfile->global_psymbols, | |
3786 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
3787 | break; | |
c906108c | 3788 | case DW_TAG_class_type: |
680b30c7 | 3789 | case DW_TAG_interface_type: |
c906108c SS |
3790 | case DW_TAG_structure_type: |
3791 | case DW_TAG_union_type: | |
3792 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
3793 | /* Skip external references. The DWARF standard says in the section |
3794 | about "Structure, Union, and Class Type Entries": "An incomplete | |
3795 | structure, union or class type is represented by a structure, | |
3796 | union or class entry that does not have a byte size attribute | |
3797 | and that has a DW_AT_declaration attribute." */ | |
3798 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
3799 | { |
3800 | if (built_actual_name) | |
3801 | xfree (actual_name); | |
3802 | return; | |
3803 | } | |
fa4028e9 | 3804 | |
63d06c5c DC |
3805 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
3806 | static vs. global. */ | |
38d518c9 | 3807 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3808 | built_actual_name, |
176620f1 | 3809 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
3810 | (cu->language == language_cplus |
3811 | || cu->language == language_java) | |
63d06c5c DC |
3812 | ? &objfile->global_psymbols |
3813 | : &objfile->static_psymbols, | |
e142c38c | 3814 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 3815 | |
c906108c SS |
3816 | break; |
3817 | case DW_TAG_enumerator: | |
38d518c9 | 3818 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3819 | built_actual_name, |
176620f1 | 3820 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
3821 | (cu->language == language_cplus |
3822 | || cu->language == language_java) | |
f6fe98ef DJ |
3823 | ? &objfile->global_psymbols |
3824 | : &objfile->static_psymbols, | |
e142c38c | 3825 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
3826 | break; |
3827 | default: | |
3828 | break; | |
3829 | } | |
5c4e30ca | 3830 | |
72bf9492 DJ |
3831 | if (built_actual_name) |
3832 | xfree (actual_name); | |
c906108c SS |
3833 | } |
3834 | ||
5c4e30ca DC |
3835 | /* Read a partial die corresponding to a namespace; also, add a symbol |
3836 | corresponding to that namespace to the symbol table. NAMESPACE is | |
3837 | the name of the enclosing namespace. */ | |
91c24f0a | 3838 | |
72bf9492 DJ |
3839 | static void |
3840 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 3841 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 3842 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 3843 | { |
72bf9492 | 3844 | /* Add a symbol for the namespace. */ |
e7c27a73 | 3845 | |
72bf9492 | 3846 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
3847 | |
3848 | /* Now scan partial symbols in that namespace. */ | |
3849 | ||
91c24f0a | 3850 | if (pdi->has_children) |
5734ee8b | 3851 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
3852 | } |
3853 | ||
5d7cb8df JK |
3854 | /* Read a partial die corresponding to a Fortran module. */ |
3855 | ||
3856 | static void | |
3857 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
3858 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
3859 | { | |
f55ee35c | 3860 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
3861 | |
3862 | if (pdi->has_children) | |
3863 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
3864 | } | |
3865 | ||
bc30ff58 JB |
3866 | /* Read a partial die corresponding to a subprogram and create a partial |
3867 | symbol for that subprogram. When the CU language allows it, this | |
3868 | routine also defines a partial symbol for each nested subprogram | |
3869 | that this subprogram contains. | |
6e70227d | 3870 | |
bc30ff58 JB |
3871 | DIE my also be a lexical block, in which case we simply search |
3872 | recursively for suprograms defined inside that lexical block. | |
3873 | Again, this is only performed when the CU language allows this | |
3874 | type of definitions. */ | |
3875 | ||
3876 | static void | |
3877 | add_partial_subprogram (struct partial_die_info *pdi, | |
3878 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 3879 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
3880 | { |
3881 | if (pdi->tag == DW_TAG_subprogram) | |
3882 | { | |
3883 | if (pdi->has_pc_info) | |
3884 | { | |
3885 | if (pdi->lowpc < *lowpc) | |
3886 | *lowpc = pdi->lowpc; | |
3887 | if (pdi->highpc > *highpc) | |
3888 | *highpc = pdi->highpc; | |
5734ee8b DJ |
3889 | if (need_pc) |
3890 | { | |
3891 | CORE_ADDR baseaddr; | |
3892 | struct objfile *objfile = cu->objfile; | |
3893 | ||
3894 | baseaddr = ANOFFSET (objfile->section_offsets, | |
3895 | SECT_OFF_TEXT (objfile)); | |
3896 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
3897 | pdi->lowpc + baseaddr, |
3898 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 3899 | cu->per_cu->v.psymtab); |
5734ee8b | 3900 | } |
bc30ff58 | 3901 | if (!pdi->is_declaration) |
e8d05480 JB |
3902 | /* Ignore subprogram DIEs that do not have a name, they are |
3903 | illegal. Do not emit a complaint at this point, we will | |
3904 | do so when we convert this psymtab into a symtab. */ | |
3905 | if (pdi->name) | |
3906 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
3907 | } |
3908 | } | |
6e70227d | 3909 | |
bc30ff58 JB |
3910 | if (! pdi->has_children) |
3911 | return; | |
3912 | ||
3913 | if (cu->language == language_ada) | |
3914 | { | |
3915 | pdi = pdi->die_child; | |
3916 | while (pdi != NULL) | |
3917 | { | |
3918 | fixup_partial_die (pdi, cu); | |
3919 | if (pdi->tag == DW_TAG_subprogram | |
3920 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 3921 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
3922 | pdi = pdi->die_sibling; |
3923 | } | |
3924 | } | |
3925 | } | |
3926 | ||
91c24f0a DC |
3927 | /* Read a partial die corresponding to an enumeration type. */ |
3928 | ||
72bf9492 DJ |
3929 | static void |
3930 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
3931 | struct dwarf2_cu *cu) | |
91c24f0a | 3932 | { |
72bf9492 | 3933 | struct partial_die_info *pdi; |
91c24f0a DC |
3934 | |
3935 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
3936 | add_partial_symbol (enum_pdi, cu); |
3937 | ||
3938 | pdi = enum_pdi->die_child; | |
3939 | while (pdi) | |
91c24f0a | 3940 | { |
72bf9492 | 3941 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 3942 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 3943 | else |
72bf9492 DJ |
3944 | add_partial_symbol (pdi, cu); |
3945 | pdi = pdi->die_sibling; | |
91c24f0a | 3946 | } |
91c24f0a DC |
3947 | } |
3948 | ||
4bb7a0a7 DJ |
3949 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
3950 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
3951 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
3952 | the initial number. */ | |
3953 | ||
3954 | static struct abbrev_info * | |
fe1b8b76 | 3955 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 3956 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
3957 | { |
3958 | bfd *abfd = cu->objfile->obfd; | |
3959 | unsigned int abbrev_number; | |
3960 | struct abbrev_info *abbrev; | |
3961 | ||
3962 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
3963 | ||
3964 | if (abbrev_number == 0) | |
3965 | return NULL; | |
3966 | ||
3967 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
3968 | if (!abbrev) | |
3969 | { | |
8a3fe4f8 | 3970 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), abbrev_number, |
4bb7a0a7 DJ |
3971 | bfd_get_filename (abfd)); |
3972 | } | |
3973 | ||
3974 | return abbrev; | |
3975 | } | |
3976 | ||
93311388 DE |
3977 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
3978 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
3979 | DIE. Any children of the skipped DIEs will also be skipped. */ |
3980 | ||
fe1b8b76 | 3981 | static gdb_byte * |
93311388 | 3982 | skip_children (gdb_byte *buffer, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
3983 | { |
3984 | struct abbrev_info *abbrev; | |
3985 | unsigned int bytes_read; | |
3986 | ||
3987 | while (1) | |
3988 | { | |
3989 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
3990 | if (abbrev == NULL) | |
3991 | return info_ptr + bytes_read; | |
3992 | else | |
93311388 | 3993 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
4bb7a0a7 DJ |
3994 | } |
3995 | } | |
3996 | ||
93311388 DE |
3997 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
3998 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
3999 | abbrev corresponding to that skipped uleb128 should be passed in |
4000 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
4001 | children. */ | |
4002 | ||
fe1b8b76 | 4003 | static gdb_byte * |
93311388 DE |
4004 | skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
4005 | struct abbrev_info *abbrev, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
4006 | { |
4007 | unsigned int bytes_read; | |
4008 | struct attribute attr; | |
4009 | bfd *abfd = cu->objfile->obfd; | |
4010 | unsigned int form, i; | |
4011 | ||
4012 | for (i = 0; i < abbrev->num_attrs; i++) | |
4013 | { | |
4014 | /* The only abbrev we care about is DW_AT_sibling. */ | |
4015 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
4016 | { | |
4017 | read_attribute (&attr, &abbrev->attrs[i], | |
4018 | abfd, info_ptr, cu); | |
4019 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 4020 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 4021 | else |
93311388 | 4022 | return buffer + dwarf2_get_ref_die_offset (&attr); |
4bb7a0a7 DJ |
4023 | } |
4024 | ||
4025 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
4026 | form = abbrev->attrs[i].form; | |
4027 | skip_attribute: | |
4028 | switch (form) | |
4029 | { | |
4bb7a0a7 | 4030 | case DW_FORM_ref_addr: |
ae411497 TT |
4031 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
4032 | and later it is offset sized. */ | |
4033 | if (cu->header.version == 2) | |
4034 | info_ptr += cu->header.addr_size; | |
4035 | else | |
4036 | info_ptr += cu->header.offset_size; | |
4037 | break; | |
4038 | case DW_FORM_addr: | |
4bb7a0a7 DJ |
4039 | info_ptr += cu->header.addr_size; |
4040 | break; | |
4041 | case DW_FORM_data1: | |
4042 | case DW_FORM_ref1: | |
4043 | case DW_FORM_flag: | |
4044 | info_ptr += 1; | |
4045 | break; | |
2dc7f7b3 TT |
4046 | case DW_FORM_flag_present: |
4047 | break; | |
4bb7a0a7 DJ |
4048 | case DW_FORM_data2: |
4049 | case DW_FORM_ref2: | |
4050 | info_ptr += 2; | |
4051 | break; | |
4052 | case DW_FORM_data4: | |
4053 | case DW_FORM_ref4: | |
4054 | info_ptr += 4; | |
4055 | break; | |
4056 | case DW_FORM_data8: | |
4057 | case DW_FORM_ref8: | |
348e048f | 4058 | case DW_FORM_sig8: |
4bb7a0a7 DJ |
4059 | info_ptr += 8; |
4060 | break; | |
4061 | case DW_FORM_string: | |
9b1c24c8 | 4062 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
4063 | info_ptr += bytes_read; |
4064 | break; | |
2dc7f7b3 | 4065 | case DW_FORM_sec_offset: |
4bb7a0a7 DJ |
4066 | case DW_FORM_strp: |
4067 | info_ptr += cu->header.offset_size; | |
4068 | break; | |
2dc7f7b3 | 4069 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
4070 | case DW_FORM_block: |
4071 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4072 | info_ptr += bytes_read; | |
4073 | break; | |
4074 | case DW_FORM_block1: | |
4075 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
4076 | break; | |
4077 | case DW_FORM_block2: | |
4078 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
4079 | break; | |
4080 | case DW_FORM_block4: | |
4081 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
4082 | break; | |
4083 | case DW_FORM_sdata: | |
4084 | case DW_FORM_udata: | |
4085 | case DW_FORM_ref_udata: | |
4086 | info_ptr = skip_leb128 (abfd, info_ptr); | |
4087 | break; | |
4088 | case DW_FORM_indirect: | |
4089 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4090 | info_ptr += bytes_read; | |
4091 | /* We need to continue parsing from here, so just go back to | |
4092 | the top. */ | |
4093 | goto skip_attribute; | |
4094 | ||
4095 | default: | |
8a3fe4f8 | 4096 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
4bb7a0a7 DJ |
4097 | dwarf_form_name (form), |
4098 | bfd_get_filename (abfd)); | |
4099 | } | |
4100 | } | |
4101 | ||
4102 | if (abbrev->has_children) | |
93311388 | 4103 | return skip_children (buffer, info_ptr, cu); |
4bb7a0a7 DJ |
4104 | else |
4105 | return info_ptr; | |
4106 | } | |
4107 | ||
93311388 DE |
4108 | /* Locate ORIG_PDI's sibling. |
4109 | INFO_PTR should point to the start of the next DIE after ORIG_PDI | |
4110 | in BUFFER. */ | |
91c24f0a | 4111 | |
fe1b8b76 | 4112 | static gdb_byte * |
93311388 DE |
4113 | locate_pdi_sibling (struct partial_die_info *orig_pdi, |
4114 | gdb_byte *buffer, gdb_byte *info_ptr, | |
e7c27a73 | 4115 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
4116 | { |
4117 | /* Do we know the sibling already? */ | |
72bf9492 | 4118 | |
91c24f0a DC |
4119 | if (orig_pdi->sibling) |
4120 | return orig_pdi->sibling; | |
4121 | ||
4122 | /* Are there any children to deal with? */ | |
4123 | ||
4124 | if (!orig_pdi->has_children) | |
4125 | return info_ptr; | |
4126 | ||
4bb7a0a7 | 4127 | /* Skip the children the long way. */ |
91c24f0a | 4128 | |
93311388 | 4129 | return skip_children (buffer, info_ptr, cu); |
91c24f0a DC |
4130 | } |
4131 | ||
c906108c SS |
4132 | /* Expand this partial symbol table into a full symbol table. */ |
4133 | ||
4134 | static void | |
fba45db2 | 4135 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c | 4136 | { |
c906108c SS |
4137 | if (pst != NULL) |
4138 | { | |
4139 | if (pst->readin) | |
4140 | { | |
8a3fe4f8 | 4141 | warning (_("bug: psymtab for %s is already read in."), pst->filename); |
c906108c SS |
4142 | } |
4143 | else | |
4144 | { | |
4145 | if (info_verbose) | |
4146 | { | |
a3f17187 | 4147 | printf_filtered (_("Reading in symbols for %s..."), pst->filename); |
c906108c SS |
4148 | gdb_flush (gdb_stdout); |
4149 | } | |
4150 | ||
10b3939b DJ |
4151 | /* Restore our global data. */ |
4152 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
4153 | dwarf2_objfile_data_key); | |
4154 | ||
b2ab525c KB |
4155 | /* If this psymtab is constructed from a debug-only objfile, the |
4156 | has_section_at_zero flag will not necessarily be correct. We | |
4157 | can get the correct value for this flag by looking at the data | |
4158 | associated with the (presumably stripped) associated objfile. */ | |
4159 | if (pst->objfile->separate_debug_objfile_backlink) | |
4160 | { | |
4161 | struct dwarf2_per_objfile *dpo_backlink | |
4162 | = objfile_data (pst->objfile->separate_debug_objfile_backlink, | |
4163 | dwarf2_objfile_data_key); | |
9a619af0 | 4164 | |
b2ab525c KB |
4165 | dwarf2_per_objfile->has_section_at_zero |
4166 | = dpo_backlink->has_section_at_zero; | |
4167 | } | |
4168 | ||
98bfdba5 PA |
4169 | dwarf2_per_objfile->reading_partial_symbols = 0; |
4170 | ||
c906108c SS |
4171 | psymtab_to_symtab_1 (pst); |
4172 | ||
4173 | /* Finish up the debug error message. */ | |
4174 | if (info_verbose) | |
a3f17187 | 4175 | printf_filtered (_("done.\n")); |
c906108c SS |
4176 | } |
4177 | } | |
4178 | } | |
4179 | ||
10b3939b DJ |
4180 | /* Add PER_CU to the queue. */ |
4181 | ||
4182 | static void | |
03dd20cc | 4183 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b DJ |
4184 | { |
4185 | struct dwarf2_queue_item *item; | |
4186 | ||
4187 | per_cu->queued = 1; | |
4188 | item = xmalloc (sizeof (*item)); | |
4189 | item->per_cu = per_cu; | |
4190 | item->next = NULL; | |
4191 | ||
4192 | if (dwarf2_queue == NULL) | |
4193 | dwarf2_queue = item; | |
4194 | else | |
4195 | dwarf2_queue_tail->next = item; | |
4196 | ||
4197 | dwarf2_queue_tail = item; | |
4198 | } | |
4199 | ||
4200 | /* Process the queue. */ | |
4201 | ||
4202 | static void | |
4203 | process_queue (struct objfile *objfile) | |
4204 | { | |
4205 | struct dwarf2_queue_item *item, *next_item; | |
4206 | ||
03dd20cc DJ |
4207 | /* The queue starts out with one item, but following a DIE reference |
4208 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
4209 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
4210 | { | |
9291a0cd TT |
4211 | if (dwarf2_per_objfile->using_index |
4212 | ? !item->per_cu->v.quick->symtab | |
4213 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
10b3939b DJ |
4214 | process_full_comp_unit (item->per_cu); |
4215 | ||
4216 | item->per_cu->queued = 0; | |
4217 | next_item = item->next; | |
4218 | xfree (item); | |
4219 | } | |
4220 | ||
4221 | dwarf2_queue_tail = NULL; | |
4222 | } | |
4223 | ||
4224 | /* Free all allocated queue entries. This function only releases anything if | |
4225 | an error was thrown; if the queue was processed then it would have been | |
4226 | freed as we went along. */ | |
4227 | ||
4228 | static void | |
4229 | dwarf2_release_queue (void *dummy) | |
4230 | { | |
4231 | struct dwarf2_queue_item *item, *last; | |
4232 | ||
4233 | item = dwarf2_queue; | |
4234 | while (item) | |
4235 | { | |
4236 | /* Anything still marked queued is likely to be in an | |
4237 | inconsistent state, so discard it. */ | |
4238 | if (item->per_cu->queued) | |
4239 | { | |
4240 | if (item->per_cu->cu != NULL) | |
4241 | free_one_cached_comp_unit (item->per_cu->cu); | |
4242 | item->per_cu->queued = 0; | |
4243 | } | |
4244 | ||
4245 | last = item; | |
4246 | item = item->next; | |
4247 | xfree (last); | |
4248 | } | |
4249 | ||
4250 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
4251 | } | |
4252 | ||
4253 | /* Read in full symbols for PST, and anything it depends on. */ | |
4254 | ||
c906108c | 4255 | static void |
fba45db2 | 4256 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 4257 | { |
10b3939b | 4258 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 4259 | struct cleanup *back_to; |
aaa75496 JB |
4260 | int i; |
4261 | ||
4262 | for (i = 0; i < pst->number_of_dependencies; i++) | |
4263 | if (!pst->dependencies[i]->readin) | |
4264 | { | |
4265 | /* Inform about additional files that need to be read in. */ | |
4266 | if (info_verbose) | |
4267 | { | |
a3f17187 | 4268 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
4269 | fputs_filtered (" ", gdb_stdout); |
4270 | wrap_here (""); | |
4271 | fputs_filtered ("and ", gdb_stdout); | |
4272 | wrap_here (""); | |
4273 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
4274 | wrap_here (""); /* Flush output */ | |
4275 | gdb_flush (gdb_stdout); | |
4276 | } | |
4277 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
4278 | } | |
4279 | ||
e38df1d0 | 4280 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
4281 | |
4282 | if (per_cu == NULL) | |
aaa75496 JB |
4283 | { |
4284 | /* It's an include file, no symbols to read for it. | |
4285 | Everything is in the parent symtab. */ | |
4286 | pst->readin = 1; | |
4287 | return; | |
4288 | } | |
c906108c | 4289 | |
9291a0cd | 4290 | dw2_do_instantiate_symtab (pst->objfile, per_cu); |
10b3939b DJ |
4291 | } |
4292 | ||
93311388 | 4293 | /* Load the DIEs associated with PER_CU into memory. */ |
10b3939b | 4294 | |
93311388 | 4295 | static void |
31ffec48 | 4296 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b | 4297 | { |
31ffec48 | 4298 | bfd *abfd = objfile->obfd; |
10b3939b | 4299 | struct dwarf2_cu *cu; |
c764a876 | 4300 | unsigned int offset; |
93311388 | 4301 | gdb_byte *info_ptr, *beg_of_comp_unit; |
98bfdba5 | 4302 | struct cleanup *free_abbrevs_cleanup = NULL, *free_cu_cleanup = NULL; |
10b3939b | 4303 | struct attribute *attr; |
98bfdba5 | 4304 | int read_cu = 0; |
6502dd73 | 4305 | |
348e048f DE |
4306 | gdb_assert (! per_cu->from_debug_types); |
4307 | ||
c906108c | 4308 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 4309 | offset = per_cu->offset; |
6502dd73 | 4310 | |
be391dca | 4311 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
dce234bc | 4312 | info_ptr = dwarf2_per_objfile->info.buffer + offset; |
93311388 | 4313 | beg_of_comp_unit = info_ptr; |
63d06c5c | 4314 | |
98bfdba5 PA |
4315 | if (per_cu->cu == NULL) |
4316 | { | |
4317 | cu = alloc_one_comp_unit (objfile); | |
4318 | ||
4319 | read_cu = 1; | |
c906108c | 4320 | |
98bfdba5 PA |
4321 | /* If an error occurs while loading, release our storage. */ |
4322 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 4323 | |
98bfdba5 PA |
4324 | /* Read in the comp_unit header. */ |
4325 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); | |
c906108c | 4326 | |
98bfdba5 PA |
4327 | /* Complete the cu_header. */ |
4328 | cu->header.offset = offset; | |
4329 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; | |
93311388 | 4330 | |
98bfdba5 PA |
4331 | /* Read the abbrevs for this compilation unit. */ |
4332 | dwarf2_read_abbrevs (abfd, cu); | |
4333 | free_abbrevs_cleanup = make_cleanup (dwarf2_free_abbrev_table, cu); | |
10b3939b | 4334 | |
98bfdba5 PA |
4335 | /* Link this compilation unit into the compilation unit tree. */ |
4336 | per_cu->cu = cu; | |
4337 | cu->per_cu = per_cu; | |
98bfdba5 PA |
4338 | |
4339 | /* Link this CU into read_in_chain. */ | |
4340 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
4341 | dwarf2_per_objfile->read_in_chain = per_cu; | |
4342 | } | |
4343 | else | |
4344 | { | |
4345 | cu = per_cu->cu; | |
4346 | info_ptr += cu->header.first_die_offset; | |
4347 | } | |
e142c38c | 4348 | |
93311388 | 4349 | cu->dies = read_comp_unit (info_ptr, cu); |
10b3939b DJ |
4350 | |
4351 | /* We try not to read any attributes in this function, because not | |
4352 | all objfiles needed for references have been loaded yet, and symbol | |
4353 | table processing isn't initialized. But we have to set the CU language, | |
4354 | or we won't be able to build types correctly. */ | |
4355 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
4356 | if (attr) | |
4357 | set_cu_language (DW_UNSND (attr), cu); | |
4358 | else | |
4359 | set_cu_language (language_minimal, cu); | |
4360 | ||
a6c727b2 DJ |
4361 | /* Similarly, if we do not read the producer, we can not apply |
4362 | producer-specific interpretation. */ | |
4363 | attr = dwarf2_attr (cu->dies, DW_AT_producer, cu); | |
4364 | if (attr) | |
4365 | cu->producer = DW_STRING (attr); | |
4366 | ||
98bfdba5 PA |
4367 | if (read_cu) |
4368 | { | |
4369 | do_cleanups (free_abbrevs_cleanup); | |
e142c38c | 4370 | |
98bfdba5 PA |
4371 | /* We've successfully allocated this compilation unit. Let our |
4372 | caller clean it up when finished with it. */ | |
4373 | discard_cleanups (free_cu_cleanup); | |
4374 | } | |
10b3939b DJ |
4375 | } |
4376 | ||
3da10d80 KS |
4377 | /* Add a DIE to the delayed physname list. */ |
4378 | ||
4379 | static void | |
4380 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
4381 | const char *name, struct die_info *die, | |
4382 | struct dwarf2_cu *cu) | |
4383 | { | |
4384 | struct delayed_method_info mi; | |
4385 | mi.type = type; | |
4386 | mi.fnfield_index = fnfield_index; | |
4387 | mi.index = index; | |
4388 | mi.name = name; | |
4389 | mi.die = die; | |
4390 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
4391 | } | |
4392 | ||
4393 | /* A cleanup for freeing the delayed method list. */ | |
4394 | ||
4395 | static void | |
4396 | free_delayed_list (void *ptr) | |
4397 | { | |
4398 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
4399 | if (cu->method_list != NULL) | |
4400 | { | |
4401 | VEC_free (delayed_method_info, cu->method_list); | |
4402 | cu->method_list = NULL; | |
4403 | } | |
4404 | } | |
4405 | ||
4406 | /* Compute the physnames of any methods on the CU's method list. | |
4407 | ||
4408 | The computation of method physnames is delayed in order to avoid the | |
4409 | (bad) condition that one of the method's formal parameters is of an as yet | |
4410 | incomplete type. */ | |
4411 | ||
4412 | static void | |
4413 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
4414 | { | |
4415 | int i; | |
4416 | struct delayed_method_info *mi; | |
4417 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
4418 | { | |
4419 | char *physname; | |
4420 | struct fn_fieldlist *fn_flp | |
4421 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
4422 | physname = (char *) dwarf2_physname ((char *) mi->name, mi->die, cu); | |
4423 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; | |
4424 | } | |
4425 | } | |
4426 | ||
10b3939b DJ |
4427 | /* Generate full symbol information for PST and CU, whose DIEs have |
4428 | already been loaded into memory. */ | |
4429 | ||
4430 | static void | |
4431 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
4432 | { | |
10b3939b | 4433 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 4434 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
4435 | CORE_ADDR lowpc, highpc; |
4436 | struct symtab *symtab; | |
3da10d80 | 4437 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b DJ |
4438 | CORE_ADDR baseaddr; |
4439 | ||
4440 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
4441 | ||
10b3939b DJ |
4442 | buildsym_init (); |
4443 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 4444 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
4445 | |
4446 | cu->list_in_scope = &file_symbols; | |
c906108c | 4447 | |
d85a05f0 | 4448 | dwarf2_find_base_address (cu->dies, cu); |
0d53c4c4 | 4449 | |
c906108c | 4450 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 4451 | process_die (cu->dies, cu); |
c906108c | 4452 | |
3da10d80 KS |
4453 | /* Now that we have processed all the DIEs in the CU, all the types |
4454 | should be complete, and it should now be safe to compute all of the | |
4455 | physnames. */ | |
4456 | compute_delayed_physnames (cu); | |
4457 | do_cleanups (delayed_list_cleanup); | |
4458 | ||
fae299cd DC |
4459 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
4460 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
4461 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 4462 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 4463 | |
613e1657 | 4464 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
4465 | |
4466 | /* Set symtab language to language from DW_AT_language. | |
4467 | If the compilation is from a C file generated by language preprocessors, | |
4468 | do not set the language if it was already deduced by start_subfile. */ | |
4469 | if (symtab != NULL | |
10b3939b | 4470 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 4471 | { |
10b3939b | 4472 | symtab->language = cu->language; |
c906108c | 4473 | } |
9291a0cd TT |
4474 | |
4475 | if (dwarf2_per_objfile->using_index) | |
4476 | per_cu->v.quick->symtab = symtab; | |
4477 | else | |
4478 | { | |
4479 | struct partial_symtab *pst = per_cu->v.psymtab; | |
4480 | pst->symtab = symtab; | |
4481 | pst->readin = 1; | |
4482 | } | |
c906108c SS |
4483 | |
4484 | do_cleanups (back_to); | |
4485 | } | |
4486 | ||
4487 | /* Process a die and its children. */ | |
4488 | ||
4489 | static void | |
e7c27a73 | 4490 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4491 | { |
4492 | switch (die->tag) | |
4493 | { | |
4494 | case DW_TAG_padding: | |
4495 | break; | |
4496 | case DW_TAG_compile_unit: | |
e7c27a73 | 4497 | read_file_scope (die, cu); |
c906108c | 4498 | break; |
348e048f DE |
4499 | case DW_TAG_type_unit: |
4500 | read_type_unit_scope (die, cu); | |
4501 | break; | |
c906108c | 4502 | case DW_TAG_subprogram: |
c906108c | 4503 | case DW_TAG_inlined_subroutine: |
edb3359d | 4504 | read_func_scope (die, cu); |
c906108c SS |
4505 | break; |
4506 | case DW_TAG_lexical_block: | |
14898363 L |
4507 | case DW_TAG_try_block: |
4508 | case DW_TAG_catch_block: | |
e7c27a73 | 4509 | read_lexical_block_scope (die, cu); |
c906108c SS |
4510 | break; |
4511 | case DW_TAG_class_type: | |
680b30c7 | 4512 | case DW_TAG_interface_type: |
c906108c SS |
4513 | case DW_TAG_structure_type: |
4514 | case DW_TAG_union_type: | |
134d01f1 | 4515 | process_structure_scope (die, cu); |
c906108c SS |
4516 | break; |
4517 | case DW_TAG_enumeration_type: | |
134d01f1 | 4518 | process_enumeration_scope (die, cu); |
c906108c | 4519 | break; |
134d01f1 | 4520 | |
f792889a DJ |
4521 | /* These dies have a type, but processing them does not create |
4522 | a symbol or recurse to process the children. Therefore we can | |
4523 | read them on-demand through read_type_die. */ | |
c906108c | 4524 | case DW_TAG_subroutine_type: |
72019c9c | 4525 | case DW_TAG_set_type: |
c906108c | 4526 | case DW_TAG_array_type: |
c906108c | 4527 | case DW_TAG_pointer_type: |
c906108c | 4528 | case DW_TAG_ptr_to_member_type: |
c906108c | 4529 | case DW_TAG_reference_type: |
c906108c | 4530 | case DW_TAG_string_type: |
c906108c | 4531 | break; |
134d01f1 | 4532 | |
c906108c | 4533 | case DW_TAG_base_type: |
a02abb62 | 4534 | case DW_TAG_subrange_type: |
cb249c71 | 4535 | case DW_TAG_typedef: |
134d01f1 DJ |
4536 | /* Add a typedef symbol for the type definition, if it has a |
4537 | DW_AT_name. */ | |
f792889a | 4538 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 4539 | break; |
c906108c | 4540 | case DW_TAG_common_block: |
e7c27a73 | 4541 | read_common_block (die, cu); |
c906108c SS |
4542 | break; |
4543 | case DW_TAG_common_inclusion: | |
4544 | break; | |
d9fa45fe | 4545 | case DW_TAG_namespace: |
63d06c5c | 4546 | processing_has_namespace_info = 1; |
e7c27a73 | 4547 | read_namespace (die, cu); |
d9fa45fe | 4548 | break; |
5d7cb8df | 4549 | case DW_TAG_module: |
f55ee35c | 4550 | processing_has_namespace_info = 1; |
5d7cb8df JK |
4551 | read_module (die, cu); |
4552 | break; | |
d9fa45fe DC |
4553 | case DW_TAG_imported_declaration: |
4554 | case DW_TAG_imported_module: | |
63d06c5c | 4555 | processing_has_namespace_info = 1; |
27aa8d6a SW |
4556 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
4557 | || cu->language != language_fortran)) | |
4558 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
4559 | dwarf_tag_name (die->tag)); | |
4560 | read_import_statement (die, cu); | |
d9fa45fe | 4561 | break; |
c906108c | 4562 | default: |
e7c27a73 | 4563 | new_symbol (die, NULL, cu); |
c906108c SS |
4564 | break; |
4565 | } | |
4566 | } | |
4567 | ||
94af9270 KS |
4568 | /* A helper function for dwarf2_compute_name which determines whether DIE |
4569 | needs to have the name of the scope prepended to the name listed in the | |
4570 | die. */ | |
4571 | ||
4572 | static int | |
4573 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
4574 | { | |
1c809c68 TT |
4575 | struct attribute *attr; |
4576 | ||
94af9270 KS |
4577 | switch (die->tag) |
4578 | { | |
4579 | case DW_TAG_namespace: | |
4580 | case DW_TAG_typedef: | |
4581 | case DW_TAG_class_type: | |
4582 | case DW_TAG_interface_type: | |
4583 | case DW_TAG_structure_type: | |
4584 | case DW_TAG_union_type: | |
4585 | case DW_TAG_enumeration_type: | |
4586 | case DW_TAG_enumerator: | |
4587 | case DW_TAG_subprogram: | |
4588 | case DW_TAG_member: | |
4589 | return 1; | |
4590 | ||
4591 | case DW_TAG_variable: | |
c2b0a229 | 4592 | case DW_TAG_constant: |
94af9270 KS |
4593 | /* We only need to prefix "globally" visible variables. These include |
4594 | any variable marked with DW_AT_external or any variable that | |
4595 | lives in a namespace. [Variables in anonymous namespaces | |
4596 | require prefixing, but they are not DW_AT_external.] */ | |
4597 | ||
4598 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
4599 | { | |
4600 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 4601 | |
94af9270 KS |
4602 | return die_needs_namespace (die_specification (die, &spec_cu), |
4603 | spec_cu); | |
4604 | } | |
4605 | ||
1c809c68 | 4606 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
4607 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
4608 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
4609 | return 0; |
4610 | /* A variable in a lexical block of some kind does not need a | |
4611 | namespace, even though in C++ such variables may be external | |
4612 | and have a mangled name. */ | |
4613 | if (die->parent->tag == DW_TAG_lexical_block | |
4614 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
4615 | || die->parent->tag == DW_TAG_catch_block |
4616 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
4617 | return 0; |
4618 | return 1; | |
94af9270 KS |
4619 | |
4620 | default: | |
4621 | return 0; | |
4622 | } | |
4623 | } | |
4624 | ||
98bfdba5 PA |
4625 | /* Retrieve the last character from a mem_file. */ |
4626 | ||
4627 | static void | |
4628 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
4629 | { | |
4630 | char *last_char_p = (char *) object; | |
4631 | ||
4632 | if (length > 0) | |
4633 | *last_char_p = buffer[length - 1]; | |
4634 | } | |
4635 | ||
94af9270 KS |
4636 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
4637 | compute the physname for the object, which include a method's | |
4638 | formal parameters (C++/Java) and return type (Java). | |
4639 | ||
af6b7be1 JB |
4640 | For Ada, return the DIE's linkage name rather than the fully qualified |
4641 | name. PHYSNAME is ignored.. | |
4642 | ||
94af9270 KS |
4643 | The result is allocated on the objfile_obstack and canonicalized. */ |
4644 | ||
4645 | static const char * | |
4646 | dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu, | |
4647 | int physname) | |
4648 | { | |
4649 | if (name == NULL) | |
4650 | name = dwarf2_name (die, cu); | |
4651 | ||
f55ee35c JK |
4652 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
4653 | compute it by typename_concat inside GDB. */ | |
4654 | if (cu->language == language_ada | |
4655 | || (cu->language == language_fortran && physname)) | |
4656 | { | |
4657 | /* For Ada unit, we prefer the linkage name over the name, as | |
4658 | the former contains the exported name, which the user expects | |
4659 | to be able to reference. Ideally, we want the user to be able | |
4660 | to reference this entity using either natural or linkage name, | |
4661 | but we haven't started looking at this enhancement yet. */ | |
4662 | struct attribute *attr; | |
4663 | ||
4664 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
4665 | if (attr == NULL) | |
4666 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
4667 | if (attr && DW_STRING (attr)) | |
4668 | return DW_STRING (attr); | |
4669 | } | |
4670 | ||
94af9270 KS |
4671 | /* These are the only languages we know how to qualify names in. */ |
4672 | if (name != NULL | |
f55ee35c JK |
4673 | && (cu->language == language_cplus || cu->language == language_java |
4674 | || cu->language == language_fortran)) | |
94af9270 KS |
4675 | { |
4676 | if (die_needs_namespace (die, cu)) | |
4677 | { | |
4678 | long length; | |
4679 | char *prefix; | |
4680 | struct ui_file *buf; | |
4681 | ||
4682 | prefix = determine_prefix (die, cu); | |
4683 | buf = mem_fileopen (); | |
4684 | if (*prefix != '\0') | |
4685 | { | |
f55ee35c JK |
4686 | char *prefixed_name = typename_concat (NULL, prefix, name, |
4687 | physname, cu); | |
9a619af0 | 4688 | |
94af9270 KS |
4689 | fputs_unfiltered (prefixed_name, buf); |
4690 | xfree (prefixed_name); | |
4691 | } | |
4692 | else | |
4693 | fputs_unfiltered (name ? name : "", buf); | |
4694 | ||
98bfdba5 PA |
4695 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
4696 | as children with DW_TAG_template_type_param or | |
4697 | DW_TAG_value_type_param. If the latter, add them to the name | |
4698 | here. If the name already has template parameters, then | |
4699 | skip this step; some versions of GCC emit both, and | |
4700 | it is more efficient to use the pre-computed name. | |
4701 | ||
4702 | Something to keep in mind about this process: it is very | |
4703 | unlikely, or in some cases downright impossible, to produce | |
4704 | something that will match the mangled name of a function. | |
4705 | If the definition of the function has the same debug info, | |
4706 | we should be able to match up with it anyway. But fallbacks | |
4707 | using the minimal symbol, for instance to find a method | |
4708 | implemented in a stripped copy of libstdc++, will not work. | |
4709 | If we do not have debug info for the definition, we will have to | |
4710 | match them up some other way. | |
4711 | ||
4712 | When we do name matching there is a related problem with function | |
4713 | templates; two instantiated function templates are allowed to | |
4714 | differ only by their return types, which we do not add here. */ | |
4715 | ||
4716 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
4717 | { | |
4718 | struct attribute *attr; | |
4719 | struct die_info *child; | |
4720 | int first = 1; | |
4721 | ||
4722 | die->building_fullname = 1; | |
4723 | ||
4724 | for (child = die->child; child != NULL; child = child->sibling) | |
4725 | { | |
4726 | struct type *type; | |
4727 | long value; | |
4728 | gdb_byte *bytes; | |
4729 | struct dwarf2_locexpr_baton *baton; | |
4730 | struct value *v; | |
4731 | ||
4732 | if (child->tag != DW_TAG_template_type_param | |
4733 | && child->tag != DW_TAG_template_value_param) | |
4734 | continue; | |
4735 | ||
4736 | if (first) | |
4737 | { | |
4738 | fputs_unfiltered ("<", buf); | |
4739 | first = 0; | |
4740 | } | |
4741 | else | |
4742 | fputs_unfiltered (", ", buf); | |
4743 | ||
4744 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
4745 | if (attr == NULL) | |
4746 | { | |
4747 | complaint (&symfile_complaints, | |
4748 | _("template parameter missing DW_AT_type")); | |
4749 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
4750 | continue; | |
4751 | } | |
4752 | type = die_type (child, cu); | |
4753 | ||
4754 | if (child->tag == DW_TAG_template_type_param) | |
4755 | { | |
4756 | c_print_type (type, "", buf, -1, 0); | |
4757 | continue; | |
4758 | } | |
4759 | ||
4760 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
4761 | if (attr == NULL) | |
4762 | { | |
4763 | complaint (&symfile_complaints, | |
4764 | _("template parameter missing DW_AT_const_value")); | |
4765 | fputs_unfiltered ("UNKNOWN_VALUE", buf); | |
4766 | continue; | |
4767 | } | |
4768 | ||
4769 | dwarf2_const_value_attr (attr, type, name, | |
4770 | &cu->comp_unit_obstack, cu, | |
4771 | &value, &bytes, &baton); | |
4772 | ||
4773 | if (TYPE_NOSIGN (type)) | |
4774 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
4775 | changed, this can use value_print instead. */ | |
4776 | c_printchar (value, type, buf); | |
4777 | else | |
4778 | { | |
4779 | struct value_print_options opts; | |
4780 | ||
4781 | if (baton != NULL) | |
4782 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
4783 | baton->data, | |
4784 | baton->size, | |
4785 | baton->per_cu); | |
4786 | else if (bytes != NULL) | |
4787 | { | |
4788 | v = allocate_value (type); | |
4789 | memcpy (value_contents_writeable (v), bytes, | |
4790 | TYPE_LENGTH (type)); | |
4791 | } | |
4792 | else | |
4793 | v = value_from_longest (type, value); | |
4794 | ||
4795 | /* Specify decimal so that we do not depend on the radix. */ | |
4796 | get_formatted_print_options (&opts, 'd'); | |
4797 | opts.raw = 1; | |
4798 | value_print (v, buf, &opts); | |
4799 | release_value (v); | |
4800 | value_free (v); | |
4801 | } | |
4802 | } | |
4803 | ||
4804 | die->building_fullname = 0; | |
4805 | ||
4806 | if (!first) | |
4807 | { | |
4808 | /* Close the argument list, with a space if necessary | |
4809 | (nested templates). */ | |
4810 | char last_char = '\0'; | |
4811 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
4812 | if (last_char == '>') | |
4813 | fputs_unfiltered (" >", buf); | |
4814 | else | |
4815 | fputs_unfiltered (">", buf); | |
4816 | } | |
4817 | } | |
4818 | ||
94af9270 KS |
4819 | /* For Java and C++ methods, append formal parameter type |
4820 | information, if PHYSNAME. */ | |
6e70227d | 4821 | |
94af9270 KS |
4822 | if (physname && die->tag == DW_TAG_subprogram |
4823 | && (cu->language == language_cplus | |
4824 | || cu->language == language_java)) | |
4825 | { | |
4826 | struct type *type = read_type_die (die, cu); | |
4827 | ||
4828 | c_type_print_args (type, buf, 0, cu->language); | |
4829 | ||
4830 | if (cu->language == language_java) | |
4831 | { | |
4832 | /* For java, we must append the return type to method | |
4833 | names. */ | |
4834 | if (die->tag == DW_TAG_subprogram) | |
4835 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
4836 | 0, 0); | |
4837 | } | |
4838 | else if (cu->language == language_cplus) | |
4839 | { | |
60430eff DJ |
4840 | /* Assume that an artificial first parameter is |
4841 | "this", but do not crash if it is not. RealView | |
4842 | marks unnamed (and thus unused) parameters as | |
4843 | artificial; there is no way to differentiate | |
4844 | the two cases. */ | |
94af9270 KS |
4845 | if (TYPE_NFIELDS (type) > 0 |
4846 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 4847 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
94af9270 KS |
4848 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)))) |
4849 | fputs_unfiltered (" const", buf); | |
4850 | } | |
4851 | } | |
4852 | ||
4853 | name = ui_file_obsavestring (buf, &cu->objfile->objfile_obstack, | |
4854 | &length); | |
4855 | ui_file_delete (buf); | |
4856 | ||
4857 | if (cu->language == language_cplus) | |
4858 | { | |
4859 | char *cname | |
4860 | = dwarf2_canonicalize_name (name, cu, | |
4861 | &cu->objfile->objfile_obstack); | |
9a619af0 | 4862 | |
94af9270 KS |
4863 | if (cname != NULL) |
4864 | name = cname; | |
4865 | } | |
4866 | } | |
4867 | } | |
4868 | ||
4869 | return name; | |
4870 | } | |
4871 | ||
0114d602 DJ |
4872 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
4873 | If scope qualifiers are appropriate they will be added. The result | |
4874 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
4875 | not have a name. NAME may either be from a previous call to |
4876 | dwarf2_name or NULL. | |
4877 | ||
4878 | The output string will be canonicalized (if C++/Java). */ | |
0114d602 DJ |
4879 | |
4880 | static const char * | |
94af9270 | 4881 | dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 4882 | { |
94af9270 KS |
4883 | return dwarf2_compute_name (name, die, cu, 0); |
4884 | } | |
0114d602 | 4885 | |
94af9270 KS |
4886 | /* Construct a physname for the given DIE in CU. NAME may either be |
4887 | from a previous call to dwarf2_name or NULL. The result will be | |
4888 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
4889 | name. | |
0114d602 | 4890 | |
94af9270 | 4891 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 4892 | |
94af9270 KS |
4893 | static const char * |
4894 | dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu) | |
4895 | { | |
4896 | return dwarf2_compute_name (name, die, cu, 1); | |
0114d602 DJ |
4897 | } |
4898 | ||
27aa8d6a SW |
4899 | /* Read the import statement specified by the given die and record it. */ |
4900 | ||
4901 | static void | |
4902 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
4903 | { | |
4904 | struct attribute *import_attr; | |
4905 | struct die_info *imported_die; | |
de4affc9 | 4906 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 4907 | const char *imported_name; |
794684b6 | 4908 | const char *imported_name_prefix; |
13387711 SW |
4909 | const char *canonical_name; |
4910 | const char *import_alias; | |
4911 | const char *imported_declaration = NULL; | |
794684b6 | 4912 | const char *import_prefix; |
13387711 SW |
4913 | |
4914 | char *temp; | |
27aa8d6a SW |
4915 | |
4916 | import_attr = dwarf2_attr (die, DW_AT_import, cu); | |
4917 | if (import_attr == NULL) | |
4918 | { | |
4919 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
4920 | dwarf_tag_name (die->tag)); | |
4921 | return; | |
4922 | } | |
4923 | ||
de4affc9 CC |
4924 | imported_cu = cu; |
4925 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
4926 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
4927 | if (imported_name == NULL) |
4928 | { | |
4929 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
4930 | ||
4931 | The import in the following code: | |
4932 | namespace A | |
4933 | { | |
4934 | typedef int B; | |
4935 | } | |
4936 | ||
4937 | int main () | |
4938 | { | |
4939 | using A::B; | |
4940 | B b; | |
4941 | return b; | |
4942 | } | |
4943 | ||
4944 | ... | |
4945 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
4946 | <52> DW_AT_decl_file : 1 | |
4947 | <53> DW_AT_decl_line : 6 | |
4948 | <54> DW_AT_import : <0x75> | |
4949 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
4950 | <59> DW_AT_name : B | |
4951 | <5b> DW_AT_decl_file : 1 | |
4952 | <5c> DW_AT_decl_line : 2 | |
4953 | <5d> DW_AT_type : <0x6e> | |
4954 | ... | |
4955 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
4956 | <76> DW_AT_byte_size : 4 | |
4957 | <77> DW_AT_encoding : 5 (signed) | |
4958 | ||
4959 | imports the wrong die ( 0x75 instead of 0x58 ). | |
4960 | This case will be ignored until the gcc bug is fixed. */ | |
4961 | return; | |
4962 | } | |
4963 | ||
82856980 SW |
4964 | /* Figure out the local name after import. */ |
4965 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 4966 | |
794684b6 SW |
4967 | /* Figure out where the statement is being imported to. */ |
4968 | import_prefix = determine_prefix (die, cu); | |
4969 | ||
4970 | /* Figure out what the scope of the imported die is and prepend it | |
4971 | to the name of the imported die. */ | |
de4affc9 | 4972 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 4973 | |
f55ee35c JK |
4974 | if (imported_die->tag != DW_TAG_namespace |
4975 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 4976 | { |
13387711 SW |
4977 | imported_declaration = imported_name; |
4978 | canonical_name = imported_name_prefix; | |
794684b6 | 4979 | } |
13387711 | 4980 | else if (strlen (imported_name_prefix) > 0) |
794684b6 | 4981 | { |
13387711 SW |
4982 | temp = alloca (strlen (imported_name_prefix) |
4983 | + 2 + strlen (imported_name) + 1); | |
4984 | strcpy (temp, imported_name_prefix); | |
4985 | strcat (temp, "::"); | |
4986 | strcat (temp, imported_name); | |
4987 | canonical_name = temp; | |
794684b6 | 4988 | } |
13387711 SW |
4989 | else |
4990 | canonical_name = imported_name; | |
794684b6 | 4991 | |
c0cc3a76 SW |
4992 | cp_add_using_directive (import_prefix, |
4993 | canonical_name, | |
4994 | import_alias, | |
13387711 | 4995 | imported_declaration, |
c0cc3a76 | 4996 | &cu->objfile->objfile_obstack); |
27aa8d6a SW |
4997 | } |
4998 | ||
5fb290d7 | 4999 | static void |
e142c38c | 5000 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 5001 | { |
e142c38c | 5002 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
5003 | } |
5004 | ||
cb1df416 DJ |
5005 | static void |
5006 | free_cu_line_header (void *arg) | |
5007 | { | |
5008 | struct dwarf2_cu *cu = arg; | |
5009 | ||
5010 | free_line_header (cu->line_header); | |
5011 | cu->line_header = NULL; | |
5012 | } | |
5013 | ||
9291a0cd TT |
5014 | static void |
5015 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
5016 | char **name, char **comp_dir) | |
5017 | { | |
5018 | struct attribute *attr; | |
5019 | ||
5020 | *name = NULL; | |
5021 | *comp_dir = NULL; | |
5022 | ||
5023 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
5024 | is not a source language identifier. */ | |
5025 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
5026 | if (attr) | |
5027 | { | |
5028 | *name = DW_STRING (attr); | |
5029 | } | |
5030 | ||
5031 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
5032 | if (attr) | |
5033 | *comp_dir = DW_STRING (attr); | |
5034 | else if (*name != NULL && IS_ABSOLUTE_PATH (*name)) | |
5035 | { | |
5036 | *comp_dir = ldirname (*name); | |
5037 | if (*comp_dir != NULL) | |
5038 | make_cleanup (xfree, *comp_dir); | |
5039 | } | |
5040 | if (*comp_dir != NULL) | |
5041 | { | |
5042 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
5043 | directory, get rid of it. */ | |
5044 | char *cp = strchr (*comp_dir, ':'); | |
5045 | ||
5046 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
5047 | *comp_dir = cp + 1; | |
5048 | } | |
5049 | ||
5050 | if (*name == NULL) | |
5051 | *name = "<unknown>"; | |
5052 | } | |
5053 | ||
c906108c | 5054 | static void |
e7c27a73 | 5055 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5056 | { |
e7c27a73 | 5057 | struct objfile *objfile = cu->objfile; |
debd256d | 5058 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 5059 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
5060 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
5061 | struct attribute *attr; | |
e1024ff1 | 5062 | char *name = NULL; |
c906108c SS |
5063 | char *comp_dir = NULL; |
5064 | struct die_info *child_die; | |
5065 | bfd *abfd = objfile->obfd; | |
debd256d | 5066 | struct line_header *line_header = 0; |
e142c38c | 5067 | CORE_ADDR baseaddr; |
6e70227d | 5068 | |
e142c38c | 5069 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 5070 | |
fae299cd | 5071 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
5072 | |
5073 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
5074 | from finish_block. */ | |
2acceee2 | 5075 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
5076 | lowpc = highpc; |
5077 | lowpc += baseaddr; | |
5078 | highpc += baseaddr; | |
5079 | ||
9291a0cd | 5080 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 5081 | |
e142c38c | 5082 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
5083 | if (attr) |
5084 | { | |
e142c38c | 5085 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
5086 | } |
5087 | ||
b0f35d58 | 5088 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
6e70227d | 5089 | if (attr) |
b0f35d58 | 5090 | cu->producer = DW_STRING (attr); |
303b6f5d | 5091 | |
f4b8a18d KW |
5092 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
5093 | standardised yet. As a workaround for the language detection we fall | |
5094 | back to the DW_AT_producer string. */ | |
5095 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
5096 | cu->language = language_opencl; | |
5097 | ||
c906108c SS |
5098 | /* We assume that we're processing GCC output. */ |
5099 | processing_gcc_compilation = 2; | |
c906108c | 5100 | |
df8a16a1 DJ |
5101 | processing_has_namespace_info = 0; |
5102 | ||
c906108c SS |
5103 | start_symtab (name, comp_dir, lowpc); |
5104 | record_debugformat ("DWARF 2"); | |
303b6f5d | 5105 | record_producer (cu->producer); |
c906108c | 5106 | |
e142c38c | 5107 | initialize_cu_func_list (cu); |
c906108c | 5108 | |
cb1df416 DJ |
5109 | /* Decode line number information if present. We do this before |
5110 | processing child DIEs, so that the line header table is available | |
5111 | for DW_AT_decl_file. */ | |
e142c38c | 5112 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
5113 | if (attr) |
5114 | { | |
debd256d | 5115 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 5116 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
5117 | if (line_header) |
5118 | { | |
cb1df416 DJ |
5119 | cu->line_header = line_header; |
5120 | make_cleanup (free_cu_line_header, cu); | |
aaa75496 | 5121 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 5122 | } |
5fb290d7 | 5123 | } |
debd256d | 5124 | |
cb1df416 DJ |
5125 | /* Process all dies in compilation unit. */ |
5126 | if (die->child != NULL) | |
5127 | { | |
5128 | child_die = die->child; | |
5129 | while (child_die && child_die->tag) | |
5130 | { | |
5131 | process_die (child_die, cu); | |
5132 | child_die = sibling_die (child_die); | |
5133 | } | |
5134 | } | |
5135 | ||
2e276125 JB |
5136 | /* Decode macro information, if present. Dwarf 2 macro information |
5137 | refers to information in the line number info statement program | |
5138 | header, so we can only read it if we've read the header | |
5139 | successfully. */ | |
e142c38c | 5140 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 5141 | if (attr && line_header) |
2e276125 JB |
5142 | { |
5143 | unsigned int macro_offset = DW_UNSND (attr); | |
9a619af0 | 5144 | |
2e276125 | 5145 | dwarf_decode_macros (line_header, macro_offset, |
e7c27a73 | 5146 | comp_dir, abfd, cu); |
2e276125 | 5147 | } |
debd256d | 5148 | do_cleanups (back_to); |
5fb290d7 DJ |
5149 | } |
5150 | ||
348e048f DE |
5151 | /* For TUs we want to skip the first top level sibling if it's not the |
5152 | actual type being defined by this TU. In this case the first top | |
5153 | level sibling is there to provide context only. */ | |
5154 | ||
5155 | static void | |
5156 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
5157 | { | |
5158 | struct objfile *objfile = cu->objfile; | |
5159 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
5160 | CORE_ADDR lowpc; | |
5161 | struct attribute *attr; | |
5162 | char *name = NULL; | |
5163 | char *comp_dir = NULL; | |
5164 | struct die_info *child_die; | |
5165 | bfd *abfd = objfile->obfd; | |
348e048f DE |
5166 | |
5167 | /* start_symtab needs a low pc, but we don't really have one. | |
5168 | Do what read_file_scope would do in the absence of such info. */ | |
5169 | lowpc = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5170 | ||
5171 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
5172 | is not a source language identifier. */ | |
5173 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
5174 | if (attr) | |
5175 | name = DW_STRING (attr); | |
5176 | ||
5177 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
5178 | if (attr) | |
5179 | comp_dir = DW_STRING (attr); | |
5180 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
5181 | { | |
5182 | comp_dir = ldirname (name); | |
5183 | if (comp_dir != NULL) | |
5184 | make_cleanup (xfree, comp_dir); | |
5185 | } | |
5186 | ||
5187 | if (name == NULL) | |
5188 | name = "<unknown>"; | |
5189 | ||
5190 | attr = dwarf2_attr (die, DW_AT_language, cu); | |
5191 | if (attr) | |
5192 | set_cu_language (DW_UNSND (attr), cu); | |
5193 | ||
5194 | /* This isn't technically needed today. It is done for symmetry | |
5195 | with read_file_scope. */ | |
5196 | attr = dwarf2_attr (die, DW_AT_producer, cu); | |
6e70227d | 5197 | if (attr) |
348e048f DE |
5198 | cu->producer = DW_STRING (attr); |
5199 | ||
5200 | /* We assume that we're processing GCC output. */ | |
5201 | processing_gcc_compilation = 2; | |
5202 | ||
5203 | processing_has_namespace_info = 0; | |
5204 | ||
5205 | start_symtab (name, comp_dir, lowpc); | |
5206 | record_debugformat ("DWARF 2"); | |
5207 | record_producer (cu->producer); | |
5208 | ||
5209 | /* Process the dies in the type unit. */ | |
5210 | if (die->child == NULL) | |
5211 | { | |
5212 | dump_die_for_error (die); | |
5213 | error (_("Dwarf Error: Missing children for type unit [in module %s]"), | |
5214 | bfd_get_filename (abfd)); | |
5215 | } | |
5216 | ||
5217 | child_die = die->child; | |
5218 | ||
5219 | while (child_die && child_die->tag) | |
5220 | { | |
5221 | process_die (child_die, cu); | |
5222 | ||
5223 | child_die = sibling_die (child_die); | |
5224 | } | |
5225 | ||
5226 | do_cleanups (back_to); | |
5227 | } | |
5228 | ||
5fb290d7 | 5229 | static void |
e142c38c DJ |
5230 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
5231 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
5232 | { |
5233 | struct function_range *thisfn; | |
5234 | ||
5235 | thisfn = (struct function_range *) | |
7b5a2f43 | 5236 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
5237 | thisfn->name = name; |
5238 | thisfn->lowpc = lowpc; | |
5239 | thisfn->highpc = highpc; | |
5240 | thisfn->seen_line = 0; | |
5241 | thisfn->next = NULL; | |
5242 | ||
e142c38c DJ |
5243 | if (cu->last_fn == NULL) |
5244 | cu->first_fn = thisfn; | |
5fb290d7 | 5245 | else |
e142c38c | 5246 | cu->last_fn->next = thisfn; |
5fb290d7 | 5247 | |
e142c38c | 5248 | cu->last_fn = thisfn; |
c906108c SS |
5249 | } |
5250 | ||
d389af10 JK |
5251 | /* qsort helper for inherit_abstract_dies. */ |
5252 | ||
5253 | static int | |
5254 | unsigned_int_compar (const void *ap, const void *bp) | |
5255 | { | |
5256 | unsigned int a = *(unsigned int *) ap; | |
5257 | unsigned int b = *(unsigned int *) bp; | |
5258 | ||
5259 | return (a > b) - (b > a); | |
5260 | } | |
5261 | ||
5262 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
5263 | Inherit only the children of the DW_AT_abstract_origin DIE not being already | |
5264 | referenced by DW_AT_abstract_origin from the children of the current DIE. */ | |
5265 | ||
5266 | static void | |
5267 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
5268 | { | |
5269 | struct die_info *child_die; | |
5270 | unsigned die_children_count; | |
5271 | /* CU offsets which were referenced by children of the current DIE. */ | |
5272 | unsigned *offsets; | |
5273 | unsigned *offsets_end, *offsetp; | |
5274 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ | |
5275 | struct die_info *origin_die; | |
5276 | /* Iterator of the ORIGIN_DIE children. */ | |
5277 | struct die_info *origin_child_die; | |
5278 | struct cleanup *cleanups; | |
5279 | struct attribute *attr; | |
cd02d79d PA |
5280 | struct dwarf2_cu *origin_cu; |
5281 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
5282 | |
5283 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
5284 | if (!attr) | |
5285 | return; | |
5286 | ||
cd02d79d PA |
5287 | /* Note that following die references may follow to a die in a |
5288 | different cu. */ | |
5289 | ||
5290 | origin_cu = cu; | |
5291 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
5292 | ||
5293 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
5294 | symbols in. */ | |
5295 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
5296 | origin_cu->list_in_scope = cu->list_in_scope; | |
5297 | ||
edb3359d DJ |
5298 | if (die->tag != origin_die->tag |
5299 | && !(die->tag == DW_TAG_inlined_subroutine | |
5300 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
5301 | complaint (&symfile_complaints, |
5302 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
5303 | die->offset, origin_die->offset); | |
5304 | ||
5305 | child_die = die->child; | |
5306 | die_children_count = 0; | |
5307 | while (child_die && child_die->tag) | |
5308 | { | |
5309 | child_die = sibling_die (child_die); | |
5310 | die_children_count++; | |
5311 | } | |
5312 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
5313 | cleanups = make_cleanup (xfree, offsets); | |
5314 | ||
5315 | offsets_end = offsets; | |
5316 | child_die = die->child; | |
5317 | while (child_die && child_die->tag) | |
5318 | { | |
c38f313d DJ |
5319 | /* For each CHILD_DIE, find the corresponding child of |
5320 | ORIGIN_DIE. If there is more than one layer of | |
5321 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
5322 | but GCC versions at least through 4.4 generate this (GCC PR | |
5323 | 40573). */ | |
5324 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 5325 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 5326 | |
c38f313d DJ |
5327 | while (1) |
5328 | { | |
cd02d79d PA |
5329 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
5330 | child_origin_cu); | |
c38f313d DJ |
5331 | if (attr == NULL) |
5332 | break; | |
cd02d79d PA |
5333 | child_origin_die = follow_die_ref (child_origin_die, attr, |
5334 | &child_origin_cu); | |
c38f313d DJ |
5335 | } |
5336 | ||
d389af10 JK |
5337 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
5338 | counterpart may exist. */ | |
c38f313d | 5339 | if (child_origin_die != child_die) |
d389af10 | 5340 | { |
edb3359d DJ |
5341 | if (child_die->tag != child_origin_die->tag |
5342 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
5343 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
5344 | complaint (&symfile_complaints, |
5345 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
5346 | "different tags"), child_die->offset, | |
5347 | child_origin_die->offset); | |
c38f313d DJ |
5348 | if (child_origin_die->parent != origin_die) |
5349 | complaint (&symfile_complaints, | |
5350 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
5351 | "different parents"), child_die->offset, | |
5352 | child_origin_die->offset); | |
5353 | else | |
5354 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
5355 | } |
5356 | child_die = sibling_die (child_die); | |
5357 | } | |
5358 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
5359 | unsigned_int_compar); | |
5360 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
5361 | if (offsetp[-1] == *offsetp) | |
5362 | complaint (&symfile_complaints, _("Multiple children of DIE 0x%x refer " | |
5363 | "to DIE 0x%x as their abstract origin"), | |
5364 | die->offset, *offsetp); | |
5365 | ||
5366 | offsetp = offsets; | |
5367 | origin_child_die = origin_die->child; | |
5368 | while (origin_child_die && origin_child_die->tag) | |
5369 | { | |
5370 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
5371 | while (offsetp < offsets_end && *offsetp < origin_child_die->offset) | |
5372 | offsetp++; | |
5373 | if (offsetp >= offsets_end || *offsetp > origin_child_die->offset) | |
5374 | { | |
5375 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 5376 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
5377 | } |
5378 | origin_child_die = sibling_die (origin_child_die); | |
5379 | } | |
cd02d79d | 5380 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
5381 | |
5382 | do_cleanups (cleanups); | |
5383 | } | |
5384 | ||
c906108c | 5385 | static void |
e7c27a73 | 5386 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5387 | { |
e7c27a73 | 5388 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 5389 | struct context_stack *new; |
c906108c SS |
5390 | CORE_ADDR lowpc; |
5391 | CORE_ADDR highpc; | |
5392 | struct die_info *child_die; | |
edb3359d | 5393 | struct attribute *attr, *call_line, *call_file; |
c906108c | 5394 | char *name; |
e142c38c | 5395 | CORE_ADDR baseaddr; |
801e3a5b | 5396 | struct block *block; |
edb3359d | 5397 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
5398 | VEC (symbolp) *template_args = NULL; |
5399 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
5400 | |
5401 | if (inlined_func) | |
5402 | { | |
5403 | /* If we do not have call site information, we can't show the | |
5404 | caller of this inlined function. That's too confusing, so | |
5405 | only use the scope for local variables. */ | |
5406 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
5407 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
5408 | if (call_line == NULL || call_file == NULL) | |
5409 | { | |
5410 | read_lexical_block_scope (die, cu); | |
5411 | return; | |
5412 | } | |
5413 | } | |
c906108c | 5414 | |
e142c38c DJ |
5415 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
5416 | ||
94af9270 | 5417 | name = dwarf2_name (die, cu); |
c906108c | 5418 | |
e8d05480 JB |
5419 | /* Ignore functions with missing or empty names. These are actually |
5420 | illegal according to the DWARF standard. */ | |
5421 | if (name == NULL) | |
5422 | { | |
5423 | complaint (&symfile_complaints, | |
5424 | _("missing name for subprogram DIE at %d"), die->offset); | |
5425 | return; | |
5426 | } | |
5427 | ||
5428 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
5429 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
5430 | { | |
ae4d0c03 PM |
5431 | attr = dwarf2_attr (die, DW_AT_external, cu); |
5432 | if (!attr || !DW_UNSND (attr)) | |
5433 | complaint (&symfile_complaints, | |
5434 | _("cannot get low and high bounds for subprogram DIE at %d"), | |
5435 | die->offset); | |
e8d05480 JB |
5436 | return; |
5437 | } | |
c906108c SS |
5438 | |
5439 | lowpc += baseaddr; | |
5440 | highpc += baseaddr; | |
5441 | ||
5fb290d7 | 5442 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 5443 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 5444 | |
34eaf542 TT |
5445 | /* If we have any template arguments, then we must allocate a |
5446 | different sort of symbol. */ | |
5447 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
5448 | { | |
5449 | if (child_die->tag == DW_TAG_template_type_param | |
5450 | || child_die->tag == DW_TAG_template_value_param) | |
5451 | { | |
5452 | templ_func = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5453 | struct template_symbol); | |
5454 | templ_func->base.is_cplus_template_function = 1; | |
5455 | break; | |
5456 | } | |
5457 | } | |
5458 | ||
c906108c | 5459 | new = push_context (0, lowpc); |
34eaf542 TT |
5460 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
5461 | (struct symbol *) templ_func); | |
4c2df51b | 5462 | |
4cecd739 DJ |
5463 | /* If there is a location expression for DW_AT_frame_base, record |
5464 | it. */ | |
e142c38c | 5465 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 5466 | if (attr) |
c034e007 AC |
5467 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
5468 | expression is being recorded directly in the function's symbol | |
5469 | and not in a separate frame-base object. I guess this hack is | |
5470 | to avoid adding some sort of frame-base adjunct/annex to the | |
5471 | function's symbol :-(. The problem with doing this is that it | |
5472 | results in a function symbol with a location expression that | |
5473 | has nothing to do with the location of the function, ouch! The | |
5474 | relationship should be: a function's symbol has-a frame base; a | |
5475 | frame-base has-a location expression. */ | |
e7c27a73 | 5476 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 5477 | |
e142c38c | 5478 | cu->list_in_scope = &local_symbols; |
c906108c | 5479 | |
639d11d3 | 5480 | if (die->child != NULL) |
c906108c | 5481 | { |
639d11d3 | 5482 | child_die = die->child; |
c906108c SS |
5483 | while (child_die && child_die->tag) |
5484 | { | |
34eaf542 TT |
5485 | if (child_die->tag == DW_TAG_template_type_param |
5486 | || child_die->tag == DW_TAG_template_value_param) | |
5487 | { | |
5488 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
5489 | ||
f1078f66 DJ |
5490 | if (arg != NULL) |
5491 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
5492 | } |
5493 | else | |
5494 | process_die (child_die, cu); | |
c906108c SS |
5495 | child_die = sibling_die (child_die); |
5496 | } | |
5497 | } | |
5498 | ||
d389af10 JK |
5499 | inherit_abstract_dies (die, cu); |
5500 | ||
4a811a97 UW |
5501 | /* If we have a DW_AT_specification, we might need to import using |
5502 | directives from the context of the specification DIE. See the | |
5503 | comment in determine_prefix. */ | |
5504 | if (cu->language == language_cplus | |
5505 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
5506 | { | |
5507 | struct dwarf2_cu *spec_cu = cu; | |
5508 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
5509 | ||
5510 | while (spec_die) | |
5511 | { | |
5512 | child_die = spec_die->child; | |
5513 | while (child_die && child_die->tag) | |
5514 | { | |
5515 | if (child_die->tag == DW_TAG_imported_module) | |
5516 | process_die (child_die, spec_cu); | |
5517 | child_die = sibling_die (child_die); | |
5518 | } | |
5519 | ||
5520 | /* In some cases, GCC generates specification DIEs that | |
5521 | themselves contain DW_AT_specification attributes. */ | |
5522 | spec_die = die_specification (spec_die, &spec_cu); | |
5523 | } | |
5524 | } | |
5525 | ||
c906108c SS |
5526 | new = pop_context (); |
5527 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
5528 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
5529 | lowpc, highpc, objfile); | |
5530 | ||
df8a16a1 | 5531 | /* For C++, set the block's scope. */ |
f55ee35c | 5532 | if (cu->language == language_cplus || cu->language == language_fortran) |
df8a16a1 | 5533 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, |
0114d602 | 5534 | determine_prefix (die, cu), |
df8a16a1 DJ |
5535 | processing_has_namespace_info); |
5536 | ||
801e3a5b JB |
5537 | /* If we have address ranges, record them. */ |
5538 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 5539 | |
34eaf542 TT |
5540 | /* Attach template arguments to function. */ |
5541 | if (! VEC_empty (symbolp, template_args)) | |
5542 | { | |
5543 | gdb_assert (templ_func != NULL); | |
5544 | ||
5545 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
5546 | templ_func->template_arguments | |
5547 | = obstack_alloc (&objfile->objfile_obstack, | |
5548 | (templ_func->n_template_arguments | |
5549 | * sizeof (struct symbol *))); | |
5550 | memcpy (templ_func->template_arguments, | |
5551 | VEC_address (symbolp, template_args), | |
5552 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
5553 | VEC_free (symbolp, template_args); | |
5554 | } | |
5555 | ||
208d8187 JB |
5556 | /* In C++, we can have functions nested inside functions (e.g., when |
5557 | a function declares a class that has methods). This means that | |
5558 | when we finish processing a function scope, we may need to go | |
5559 | back to building a containing block's symbol lists. */ | |
5560 | local_symbols = new->locals; | |
5561 | param_symbols = new->params; | |
27aa8d6a | 5562 | using_directives = new->using_directives; |
208d8187 | 5563 | |
921e78cf JB |
5564 | /* If we've finished processing a top-level function, subsequent |
5565 | symbols go in the file symbol list. */ | |
5566 | if (outermost_context_p ()) | |
e142c38c | 5567 | cu->list_in_scope = &file_symbols; |
c906108c SS |
5568 | } |
5569 | ||
5570 | /* Process all the DIES contained within a lexical block scope. Start | |
5571 | a new scope, process the dies, and then close the scope. */ | |
5572 | ||
5573 | static void | |
e7c27a73 | 5574 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5575 | { |
e7c27a73 | 5576 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 5577 | struct context_stack *new; |
c906108c SS |
5578 | CORE_ADDR lowpc, highpc; |
5579 | struct die_info *child_die; | |
e142c38c DJ |
5580 | CORE_ADDR baseaddr; |
5581 | ||
5582 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
5583 | |
5584 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
5585 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
5586 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 5587 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 5588 | describe ranges. */ |
d85a05f0 | 5589 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
5590 | return; |
5591 | lowpc += baseaddr; | |
5592 | highpc += baseaddr; | |
5593 | ||
5594 | push_context (0, lowpc); | |
639d11d3 | 5595 | if (die->child != NULL) |
c906108c | 5596 | { |
639d11d3 | 5597 | child_die = die->child; |
c906108c SS |
5598 | while (child_die && child_die->tag) |
5599 | { | |
e7c27a73 | 5600 | process_die (child_die, cu); |
c906108c SS |
5601 | child_die = sibling_die (child_die); |
5602 | } | |
5603 | } | |
5604 | new = pop_context (); | |
5605 | ||
8540c487 | 5606 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 5607 | { |
801e3a5b JB |
5608 | struct block *block |
5609 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
5610 | highpc, objfile); | |
5611 | ||
5612 | /* Note that recording ranges after traversing children, as we | |
5613 | do here, means that recording a parent's ranges entails | |
5614 | walking across all its children's ranges as they appear in | |
5615 | the address map, which is quadratic behavior. | |
5616 | ||
5617 | It would be nicer to record the parent's ranges before | |
5618 | traversing its children, simply overriding whatever you find | |
5619 | there. But since we don't even decide whether to create a | |
5620 | block until after we've traversed its children, that's hard | |
5621 | to do. */ | |
5622 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
5623 | } |
5624 | local_symbols = new->locals; | |
27aa8d6a | 5625 | using_directives = new->using_directives; |
c906108c SS |
5626 | } |
5627 | ||
43039443 | 5628 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
5629 | Return 1 if the attributes are present and valid, otherwise, return 0. |
5630 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
5631 | |
5632 | static int | |
5633 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
5634 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
5635 | struct partial_symtab *ranges_pst) | |
43039443 JK |
5636 | { |
5637 | struct objfile *objfile = cu->objfile; | |
5638 | struct comp_unit_head *cu_header = &cu->header; | |
5639 | bfd *obfd = objfile->obfd; | |
5640 | unsigned int addr_size = cu_header->addr_size; | |
5641 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
5642 | /* Base address selection entry. */ | |
5643 | CORE_ADDR base; | |
5644 | int found_base; | |
5645 | unsigned int dummy; | |
5646 | gdb_byte *buffer; | |
5647 | CORE_ADDR marker; | |
5648 | int low_set; | |
5649 | CORE_ADDR low = 0; | |
5650 | CORE_ADDR high = 0; | |
ff013f42 | 5651 | CORE_ADDR baseaddr; |
43039443 | 5652 | |
d00adf39 DE |
5653 | found_base = cu->base_known; |
5654 | base = cu->base_address; | |
43039443 | 5655 | |
be391dca | 5656 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 5657 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
5658 | { |
5659 | complaint (&symfile_complaints, | |
5660 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
5661 | offset); | |
5662 | return 0; | |
5663 | } | |
dce234bc | 5664 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
5665 | |
5666 | /* Read in the largest possible address. */ | |
5667 | marker = read_address (obfd, buffer, cu, &dummy); | |
5668 | if ((marker & mask) == mask) | |
5669 | { | |
5670 | /* If we found the largest possible address, then | |
5671 | read the base address. */ | |
5672 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
5673 | buffer += 2 * addr_size; | |
5674 | offset += 2 * addr_size; | |
5675 | found_base = 1; | |
5676 | } | |
5677 | ||
5678 | low_set = 0; | |
5679 | ||
e7030f15 | 5680 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 5681 | |
43039443 JK |
5682 | while (1) |
5683 | { | |
5684 | CORE_ADDR range_beginning, range_end; | |
5685 | ||
5686 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
5687 | buffer += addr_size; | |
5688 | range_end = read_address (obfd, buffer, cu, &dummy); | |
5689 | buffer += addr_size; | |
5690 | offset += 2 * addr_size; | |
5691 | ||
5692 | /* An end of list marker is a pair of zero addresses. */ | |
5693 | if (range_beginning == 0 && range_end == 0) | |
5694 | /* Found the end of list entry. */ | |
5695 | break; | |
5696 | ||
5697 | /* Each base address selection entry is a pair of 2 values. | |
5698 | The first is the largest possible address, the second is | |
5699 | the base address. Check for a base address here. */ | |
5700 | if ((range_beginning & mask) == mask) | |
5701 | { | |
5702 | /* If we found the largest possible address, then | |
5703 | read the base address. */ | |
5704 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
5705 | found_base = 1; | |
5706 | continue; | |
5707 | } | |
5708 | ||
5709 | if (!found_base) | |
5710 | { | |
5711 | /* We have no valid base address for the ranges | |
5712 | data. */ | |
5713 | complaint (&symfile_complaints, | |
5714 | _("Invalid .debug_ranges data (no base address)")); | |
5715 | return 0; | |
5716 | } | |
5717 | ||
5718 | range_beginning += base; | |
5719 | range_end += base; | |
5720 | ||
ff013f42 JK |
5721 | if (ranges_pst != NULL && range_beginning < range_end) |
5722 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
5723 | range_beginning + baseaddr, range_end - 1 + baseaddr, | |
5724 | ranges_pst); | |
5725 | ||
43039443 JK |
5726 | /* FIXME: This is recording everything as a low-high |
5727 | segment of consecutive addresses. We should have a | |
5728 | data structure for discontiguous block ranges | |
5729 | instead. */ | |
5730 | if (! low_set) | |
5731 | { | |
5732 | low = range_beginning; | |
5733 | high = range_end; | |
5734 | low_set = 1; | |
5735 | } | |
5736 | else | |
5737 | { | |
5738 | if (range_beginning < low) | |
5739 | low = range_beginning; | |
5740 | if (range_end > high) | |
5741 | high = range_end; | |
5742 | } | |
5743 | } | |
5744 | ||
5745 | if (! low_set) | |
5746 | /* If the first entry is an end-of-list marker, the range | |
5747 | describes an empty scope, i.e. no instructions. */ | |
5748 | return 0; | |
5749 | ||
5750 | if (low_return) | |
5751 | *low_return = low; | |
5752 | if (high_return) | |
5753 | *high_return = high; | |
5754 | return 1; | |
5755 | } | |
5756 | ||
af34e669 DJ |
5757 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
5758 | are present and valid, otherwise, return 0. Return -1 if the range is | |
5759 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 5760 | static int |
af34e669 | 5761 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
5762 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
5763 | struct partial_symtab *pst) | |
c906108c SS |
5764 | { |
5765 | struct attribute *attr; | |
af34e669 DJ |
5766 | CORE_ADDR low = 0; |
5767 | CORE_ADDR high = 0; | |
5768 | int ret = 0; | |
c906108c | 5769 | |
e142c38c | 5770 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 5771 | if (attr) |
af34e669 DJ |
5772 | { |
5773 | high = DW_ADDR (attr); | |
e142c38c | 5774 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
5775 | if (attr) |
5776 | low = DW_ADDR (attr); | |
5777 | else | |
5778 | /* Found high w/o low attribute. */ | |
5779 | return 0; | |
5780 | ||
5781 | /* Found consecutive range of addresses. */ | |
5782 | ret = 1; | |
5783 | } | |
c906108c | 5784 | else |
af34e669 | 5785 | { |
e142c38c | 5786 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
5787 | if (attr != NULL) |
5788 | { | |
af34e669 | 5789 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 5790 | .debug_ranges section. */ |
d85a05f0 | 5791 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, pst)) |
af34e669 | 5792 | return 0; |
43039443 | 5793 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
5794 | ret = -1; |
5795 | } | |
5796 | } | |
c906108c SS |
5797 | |
5798 | if (high < low) | |
5799 | return 0; | |
5800 | ||
5801 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
5802 | eliminate duplicate copies of functions and vtables and such. | |
5803 | The linker will arbitrarily choose one and discard the others. | |
5804 | The AT_*_pc values for such functions refer to local labels in | |
5805 | these sections. If the section from that file was discarded, the | |
5806 | labels are not in the output, so the relocs get a value of 0. | |
5807 | If this is a discarded function, mark the pc bounds as invalid, | |
5808 | so that GDB will ignore it. */ | |
72dca2f5 | 5809 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
5810 | return 0; |
5811 | ||
5812 | *lowpc = low; | |
5813 | *highpc = high; | |
af34e669 | 5814 | return ret; |
c906108c SS |
5815 | } |
5816 | ||
b084d499 JB |
5817 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
5818 | its low and high PC addresses. Do nothing if these addresses could not | |
5819 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
5820 | and HIGHPC to the high address if greater than HIGHPC. */ | |
5821 | ||
5822 | static void | |
5823 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
5824 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5825 | struct dwarf2_cu *cu) | |
5826 | { | |
5827 | CORE_ADDR low, high; | |
5828 | struct die_info *child = die->child; | |
5829 | ||
d85a05f0 | 5830 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
5831 | { |
5832 | *lowpc = min (*lowpc, low); | |
5833 | *highpc = max (*highpc, high); | |
5834 | } | |
5835 | ||
5836 | /* If the language does not allow nested subprograms (either inside | |
5837 | subprograms or lexical blocks), we're done. */ | |
5838 | if (cu->language != language_ada) | |
5839 | return; | |
6e70227d | 5840 | |
b084d499 JB |
5841 | /* Check all the children of the given DIE. If it contains nested |
5842 | subprograms, then check their pc bounds. Likewise, we need to | |
5843 | check lexical blocks as well, as they may also contain subprogram | |
5844 | definitions. */ | |
5845 | while (child && child->tag) | |
5846 | { | |
5847 | if (child->tag == DW_TAG_subprogram | |
5848 | || child->tag == DW_TAG_lexical_block) | |
5849 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
5850 | child = sibling_die (child); | |
5851 | } | |
5852 | } | |
5853 | ||
fae299cd DC |
5854 | /* Get the low and high pc's represented by the scope DIE, and store |
5855 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
5856 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
5857 | ||
5858 | static void | |
5859 | get_scope_pc_bounds (struct die_info *die, | |
5860 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5861 | struct dwarf2_cu *cu) | |
5862 | { | |
5863 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
5864 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
5865 | CORE_ADDR current_low, current_high; | |
5866 | ||
d85a05f0 | 5867 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
5868 | { |
5869 | best_low = current_low; | |
5870 | best_high = current_high; | |
5871 | } | |
5872 | else | |
5873 | { | |
5874 | struct die_info *child = die->child; | |
5875 | ||
5876 | while (child && child->tag) | |
5877 | { | |
5878 | switch (child->tag) { | |
5879 | case DW_TAG_subprogram: | |
b084d499 | 5880 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
5881 | break; |
5882 | case DW_TAG_namespace: | |
f55ee35c | 5883 | case DW_TAG_module: |
fae299cd DC |
5884 | /* FIXME: carlton/2004-01-16: Should we do this for |
5885 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
5886 | that current GCC's always emit the DIEs corresponding | |
5887 | to definitions of methods of classes as children of a | |
5888 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
5889 | the DIEs giving the declarations, which could be | |
5890 | anywhere). But I don't see any reason why the | |
5891 | standards says that they have to be there. */ | |
5892 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
5893 | ||
5894 | if (current_low != ((CORE_ADDR) -1)) | |
5895 | { | |
5896 | best_low = min (best_low, current_low); | |
5897 | best_high = max (best_high, current_high); | |
5898 | } | |
5899 | break; | |
5900 | default: | |
5901 | /* Ignore. */ | |
5902 | break; | |
5903 | } | |
5904 | ||
5905 | child = sibling_die (child); | |
5906 | } | |
5907 | } | |
5908 | ||
5909 | *lowpc = best_low; | |
5910 | *highpc = best_high; | |
5911 | } | |
5912 | ||
801e3a5b JB |
5913 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
5914 | in DIE. */ | |
5915 | static void | |
5916 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
5917 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
5918 | { | |
5919 | struct attribute *attr; | |
5920 | ||
5921 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); | |
5922 | if (attr) | |
5923 | { | |
5924 | CORE_ADDR high = DW_ADDR (attr); | |
9a619af0 | 5925 | |
801e3a5b JB |
5926 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
5927 | if (attr) | |
5928 | { | |
5929 | CORE_ADDR low = DW_ADDR (attr); | |
9a619af0 | 5930 | |
801e3a5b JB |
5931 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
5932 | } | |
5933 | } | |
5934 | ||
5935 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
5936 | if (attr) | |
5937 | { | |
5938 | bfd *obfd = cu->objfile->obfd; | |
5939 | ||
5940 | /* The value of the DW_AT_ranges attribute is the offset of the | |
5941 | address range list in the .debug_ranges section. */ | |
5942 | unsigned long offset = DW_UNSND (attr); | |
dce234bc | 5943 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
5944 | |
5945 | /* For some target architectures, but not others, the | |
5946 | read_address function sign-extends the addresses it returns. | |
5947 | To recognize base address selection entries, we need a | |
5948 | mask. */ | |
5949 | unsigned int addr_size = cu->header.addr_size; | |
5950 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
5951 | ||
5952 | /* The base address, to which the next pair is relative. Note | |
5953 | that this 'base' is a DWARF concept: most entries in a range | |
5954 | list are relative, to reduce the number of relocs against the | |
5955 | debugging information. This is separate from this function's | |
5956 | 'baseaddr' argument, which GDB uses to relocate debugging | |
5957 | information from a shared library based on the address at | |
5958 | which the library was loaded. */ | |
d00adf39 DE |
5959 | CORE_ADDR base = cu->base_address; |
5960 | int base_known = cu->base_known; | |
801e3a5b | 5961 | |
be391dca | 5962 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 5963 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
5964 | { |
5965 | complaint (&symfile_complaints, | |
5966 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
5967 | offset); | |
5968 | return; | |
5969 | } | |
5970 | ||
5971 | for (;;) | |
5972 | { | |
5973 | unsigned int bytes_read; | |
5974 | CORE_ADDR start, end; | |
5975 | ||
5976 | start = read_address (obfd, buffer, cu, &bytes_read); | |
5977 | buffer += bytes_read; | |
5978 | end = read_address (obfd, buffer, cu, &bytes_read); | |
5979 | buffer += bytes_read; | |
5980 | ||
5981 | /* Did we find the end of the range list? */ | |
5982 | if (start == 0 && end == 0) | |
5983 | break; | |
5984 | ||
5985 | /* Did we find a base address selection entry? */ | |
5986 | else if ((start & base_select_mask) == base_select_mask) | |
5987 | { | |
5988 | base = end; | |
5989 | base_known = 1; | |
5990 | } | |
5991 | ||
5992 | /* We found an ordinary address range. */ | |
5993 | else | |
5994 | { | |
5995 | if (!base_known) | |
5996 | { | |
5997 | complaint (&symfile_complaints, | |
5998 | _("Invalid .debug_ranges data (no base address)")); | |
5999 | return; | |
6000 | } | |
6001 | ||
6e70227d DE |
6002 | record_block_range (block, |
6003 | baseaddr + base + start, | |
801e3a5b JB |
6004 | baseaddr + base + end - 1); |
6005 | } | |
6006 | } | |
6007 | } | |
6008 | } | |
6009 | ||
c906108c SS |
6010 | /* Add an aggregate field to the field list. */ |
6011 | ||
6012 | static void | |
107d2387 | 6013 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 6014 | struct dwarf2_cu *cu) |
6e70227d | 6015 | { |
e7c27a73 | 6016 | struct objfile *objfile = cu->objfile; |
5e2b427d | 6017 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
6018 | struct nextfield *new_field; |
6019 | struct attribute *attr; | |
6020 | struct field *fp; | |
6021 | char *fieldname = ""; | |
6022 | ||
6023 | /* Allocate a new field list entry and link it in. */ | |
6024 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 6025 | make_cleanup (xfree, new_field); |
c906108c | 6026 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
6027 | |
6028 | if (die->tag == DW_TAG_inheritance) | |
6029 | { | |
6030 | new_field->next = fip->baseclasses; | |
6031 | fip->baseclasses = new_field; | |
6032 | } | |
6033 | else | |
6034 | { | |
6035 | new_field->next = fip->fields; | |
6036 | fip->fields = new_field; | |
6037 | } | |
c906108c SS |
6038 | fip->nfields++; |
6039 | ||
6040 | /* Handle accessibility and virtuality of field. | |
6041 | The default accessibility for members is public, the default | |
6042 | accessibility for inheritance is private. */ | |
6043 | if (die->tag != DW_TAG_inheritance) | |
6044 | new_field->accessibility = DW_ACCESS_public; | |
6045 | else | |
6046 | new_field->accessibility = DW_ACCESS_private; | |
6047 | new_field->virtuality = DW_VIRTUALITY_none; | |
6048 | ||
e142c38c | 6049 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
6050 | if (attr) |
6051 | new_field->accessibility = DW_UNSND (attr); | |
6052 | if (new_field->accessibility != DW_ACCESS_public) | |
6053 | fip->non_public_fields = 1; | |
e142c38c | 6054 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
6055 | if (attr) |
6056 | new_field->virtuality = DW_UNSND (attr); | |
6057 | ||
6058 | fp = &new_field->field; | |
a9a9bd0f | 6059 | |
e142c38c | 6060 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 6061 | { |
a9a9bd0f | 6062 | /* Data member other than a C++ static data member. */ |
6e70227d | 6063 | |
c906108c | 6064 | /* Get type of field. */ |
e7c27a73 | 6065 | fp->type = die_type (die, cu); |
c906108c | 6066 | |
d6a843b5 | 6067 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 6068 | |
c906108c | 6069 | /* Get bit size of field (zero if none). */ |
e142c38c | 6070 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
6071 | if (attr) |
6072 | { | |
6073 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
6074 | } | |
6075 | else | |
6076 | { | |
6077 | FIELD_BITSIZE (*fp) = 0; | |
6078 | } | |
6079 | ||
6080 | /* Get bit offset of field. */ | |
e142c38c | 6081 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
6082 | if (attr) |
6083 | { | |
d4b96c9a | 6084 | int byte_offset = 0; |
c6a0999f | 6085 | |
3690dd37 | 6086 | if (attr_form_is_section_offset (attr)) |
d4b96c9a | 6087 | dwarf2_complex_location_expr_complaint (); |
3690dd37 | 6088 | else if (attr_form_is_constant (attr)) |
c6a0999f | 6089 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); |
d4b96c9a | 6090 | else if (attr_form_is_block (attr)) |
c6a0999f | 6091 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); |
d4b96c9a JK |
6092 | else |
6093 | dwarf2_complex_location_expr_complaint (); | |
c6a0999f | 6094 | |
d6a843b5 | 6095 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); |
c906108c | 6096 | } |
e142c38c | 6097 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
6098 | if (attr) |
6099 | { | |
5e2b427d | 6100 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
6101 | { |
6102 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
6103 | additional bit offset from the MSB of the containing |
6104 | anonymous object to the MSB of the field. We don't | |
6105 | have to do anything special since we don't need to | |
6106 | know the size of the anonymous object. */ | |
c906108c SS |
6107 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
6108 | } | |
6109 | else | |
6110 | { | |
6111 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
6112 | MSB of the anonymous object, subtract off the number of |
6113 | bits from the MSB of the field to the MSB of the | |
6114 | object, and then subtract off the number of bits of | |
6115 | the field itself. The result is the bit offset of | |
6116 | the LSB of the field. */ | |
c906108c SS |
6117 | int anonymous_size; |
6118 | int bit_offset = DW_UNSND (attr); | |
6119 | ||
e142c38c | 6120 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
6121 | if (attr) |
6122 | { | |
6123 | /* The size of the anonymous object containing | |
6124 | the bit field is explicit, so use the | |
6125 | indicated size (in bytes). */ | |
6126 | anonymous_size = DW_UNSND (attr); | |
6127 | } | |
6128 | else | |
6129 | { | |
6130 | /* The size of the anonymous object containing | |
6131 | the bit field must be inferred from the type | |
6132 | attribute of the data member containing the | |
6133 | bit field. */ | |
6134 | anonymous_size = TYPE_LENGTH (fp->type); | |
6135 | } | |
6136 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
6137 | - bit_offset - FIELD_BITSIZE (*fp); | |
6138 | } | |
6139 | } | |
6140 | ||
6141 | /* Get name of field. */ | |
39cbfefa DJ |
6142 | fieldname = dwarf2_name (die, cu); |
6143 | if (fieldname == NULL) | |
6144 | fieldname = ""; | |
d8151005 DJ |
6145 | |
6146 | /* The name is already allocated along with this objfile, so we don't | |
6147 | need to duplicate it for the type. */ | |
6148 | fp->name = fieldname; | |
c906108c SS |
6149 | |
6150 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 6151 | pointer or virtual base class pointer) to private. */ |
e142c38c | 6152 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 6153 | { |
d48cc9dd | 6154 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
6155 | new_field->accessibility = DW_ACCESS_private; |
6156 | fip->non_public_fields = 1; | |
6157 | } | |
6158 | } | |
a9a9bd0f | 6159 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 6160 | { |
a9a9bd0f DC |
6161 | /* C++ static member. */ |
6162 | ||
6163 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
6164 | is a declaration, but all versions of G++ as of this writing | |
6165 | (so through at least 3.2.1) incorrectly generate | |
6166 | DW_TAG_variable tags. */ | |
6e70227d | 6167 | |
c906108c | 6168 | char *physname; |
c906108c | 6169 | |
a9a9bd0f | 6170 | /* Get name of field. */ |
39cbfefa DJ |
6171 | fieldname = dwarf2_name (die, cu); |
6172 | if (fieldname == NULL) | |
c906108c SS |
6173 | return; |
6174 | ||
254e6b9e | 6175 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
6176 | if (attr |
6177 | /* Only create a symbol if this is an external value. | |
6178 | new_symbol checks this and puts the value in the global symbol | |
6179 | table, which we want. If it is not external, new_symbol | |
6180 | will try to put the value in cu->list_in_scope which is wrong. */ | |
6181 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
6182 | { |
6183 | /* A static const member, not much different than an enum as far as | |
6184 | we're concerned, except that we can support more types. */ | |
6185 | new_symbol (die, NULL, cu); | |
6186 | } | |
6187 | ||
2df3850c | 6188 | /* Get physical name. */ |
94af9270 | 6189 | physname = (char *) dwarf2_physname (fieldname, die, cu); |
c906108c | 6190 | |
d8151005 DJ |
6191 | /* The name is already allocated along with this objfile, so we don't |
6192 | need to duplicate it for the type. */ | |
6193 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 6194 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 6195 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
6196 | } |
6197 | else if (die->tag == DW_TAG_inheritance) | |
6198 | { | |
6199 | /* C++ base class field. */ | |
e142c38c | 6200 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 6201 | if (attr) |
d4b96c9a JK |
6202 | { |
6203 | int byte_offset = 0; | |
6204 | ||
6205 | if (attr_form_is_section_offset (attr)) | |
6206 | dwarf2_complex_location_expr_complaint (); | |
6207 | else if (attr_form_is_constant (attr)) | |
6208 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); | |
6209 | else if (attr_form_is_block (attr)) | |
6210 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); | |
6211 | else | |
6212 | dwarf2_complex_location_expr_complaint (); | |
6213 | ||
6214 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); | |
6215 | } | |
c906108c | 6216 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 6217 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
6218 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
6219 | fip->nbaseclasses++; | |
6220 | } | |
6221 | } | |
6222 | ||
98751a41 JK |
6223 | /* Add a typedef defined in the scope of the FIP's class. */ |
6224 | ||
6225 | static void | |
6226 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
6227 | struct dwarf2_cu *cu) | |
6e70227d | 6228 | { |
98751a41 JK |
6229 | struct objfile *objfile = cu->objfile; |
6230 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
6231 | struct typedef_field_list *new_field; | |
6232 | struct attribute *attr; | |
6233 | struct typedef_field *fp; | |
6234 | char *fieldname = ""; | |
6235 | ||
6236 | /* Allocate a new field list entry and link it in. */ | |
6237 | new_field = xzalloc (sizeof (*new_field)); | |
6238 | make_cleanup (xfree, new_field); | |
6239 | ||
6240 | gdb_assert (die->tag == DW_TAG_typedef); | |
6241 | ||
6242 | fp = &new_field->field; | |
6243 | ||
6244 | /* Get name of field. */ | |
6245 | fp->name = dwarf2_name (die, cu); | |
6246 | if (fp->name == NULL) | |
6247 | return; | |
6248 | ||
6249 | fp->type = read_type_die (die, cu); | |
6250 | ||
6251 | new_field->next = fip->typedef_field_list; | |
6252 | fip->typedef_field_list = new_field; | |
6253 | fip->typedef_field_list_count++; | |
6254 | } | |
6255 | ||
c906108c SS |
6256 | /* Create the vector of fields, and attach it to the type. */ |
6257 | ||
6258 | static void | |
fba45db2 | 6259 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 6260 | struct dwarf2_cu *cu) |
c906108c SS |
6261 | { |
6262 | int nfields = fip->nfields; | |
6263 | ||
6264 | /* Record the field count, allocate space for the array of fields, | |
6265 | and create blank accessibility bitfields if necessary. */ | |
6266 | TYPE_NFIELDS (type) = nfields; | |
6267 | TYPE_FIELDS (type) = (struct field *) | |
6268 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
6269 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
6270 | ||
b4ba55a1 | 6271 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
6272 | { |
6273 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
6274 | ||
6275 | TYPE_FIELD_PRIVATE_BITS (type) = | |
6276 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6277 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
6278 | ||
6279 | TYPE_FIELD_PROTECTED_BITS (type) = | |
6280 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6281 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
6282 | ||
774b6a14 TT |
6283 | TYPE_FIELD_IGNORE_BITS (type) = |
6284 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6285 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
6286 | } |
6287 | ||
6288 | /* If the type has baseclasses, allocate and clear a bit vector for | |
6289 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 6290 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
6291 | { |
6292 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 6293 | unsigned char *pointer; |
c906108c SS |
6294 | |
6295 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
6296 | pointer = TYPE_ALLOC (type, num_bytes); |
6297 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
6298 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
6299 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
6300 | } | |
6301 | ||
6302 | /* Copy the saved-up fields into the field vector. Start from the head | |
6303 | of the list, adding to the tail of the field array, so that they end | |
6304 | up in the same order in the array in which they were added to the list. */ | |
6305 | while (nfields-- > 0) | |
6306 | { | |
7d0ccb61 DJ |
6307 | struct nextfield *fieldp; |
6308 | ||
6309 | if (fip->fields) | |
6310 | { | |
6311 | fieldp = fip->fields; | |
6312 | fip->fields = fieldp->next; | |
6313 | } | |
6314 | else | |
6315 | { | |
6316 | fieldp = fip->baseclasses; | |
6317 | fip->baseclasses = fieldp->next; | |
6318 | } | |
6319 | ||
6320 | TYPE_FIELD (type, nfields) = fieldp->field; | |
6321 | switch (fieldp->accessibility) | |
c906108c | 6322 | { |
c5aa993b | 6323 | case DW_ACCESS_private: |
b4ba55a1 JB |
6324 | if (cu->language != language_ada) |
6325 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 6326 | break; |
c906108c | 6327 | |
c5aa993b | 6328 | case DW_ACCESS_protected: |
b4ba55a1 JB |
6329 | if (cu->language != language_ada) |
6330 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 6331 | break; |
c906108c | 6332 | |
c5aa993b JM |
6333 | case DW_ACCESS_public: |
6334 | break; | |
c906108c | 6335 | |
c5aa993b JM |
6336 | default: |
6337 | /* Unknown accessibility. Complain and treat it as public. */ | |
6338 | { | |
e2e0b3e5 | 6339 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 6340 | fieldp->accessibility); |
c5aa993b JM |
6341 | } |
6342 | break; | |
c906108c SS |
6343 | } |
6344 | if (nfields < fip->nbaseclasses) | |
6345 | { | |
7d0ccb61 | 6346 | switch (fieldp->virtuality) |
c906108c | 6347 | { |
c5aa993b JM |
6348 | case DW_VIRTUALITY_virtual: |
6349 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 JB |
6350 | if (cu->language == language_ada) |
6351 | error ("unexpected virtuality in component of Ada type"); | |
c5aa993b JM |
6352 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
6353 | break; | |
c906108c SS |
6354 | } |
6355 | } | |
c906108c SS |
6356 | } |
6357 | } | |
6358 | ||
c906108c SS |
6359 | /* Add a member function to the proper fieldlist. */ |
6360 | ||
6361 | static void | |
107d2387 | 6362 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 6363 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 6364 | { |
e7c27a73 | 6365 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6366 | struct attribute *attr; |
6367 | struct fnfieldlist *flp; | |
6368 | int i; | |
6369 | struct fn_field *fnp; | |
6370 | char *fieldname; | |
c906108c | 6371 | struct nextfnfield *new_fnfield; |
f792889a | 6372 | struct type *this_type; |
c906108c | 6373 | |
b4ba55a1 JB |
6374 | if (cu->language == language_ada) |
6375 | error ("unexpected member function in Ada type"); | |
6376 | ||
2df3850c | 6377 | /* Get name of member function. */ |
39cbfefa DJ |
6378 | fieldname = dwarf2_name (die, cu); |
6379 | if (fieldname == NULL) | |
2df3850c | 6380 | return; |
c906108c | 6381 | |
c906108c SS |
6382 | /* Look up member function name in fieldlist. */ |
6383 | for (i = 0; i < fip->nfnfields; i++) | |
6384 | { | |
27bfe10e | 6385 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
6386 | break; |
6387 | } | |
6388 | ||
6389 | /* Create new list element if necessary. */ | |
6390 | if (i < fip->nfnfields) | |
6391 | flp = &fip->fnfieldlists[i]; | |
6392 | else | |
6393 | { | |
6394 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
6395 | { | |
6396 | fip->fnfieldlists = (struct fnfieldlist *) | |
6397 | xrealloc (fip->fnfieldlists, | |
6398 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 6399 | * sizeof (struct fnfieldlist)); |
c906108c | 6400 | if (fip->nfnfields == 0) |
c13c43fd | 6401 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
6402 | } |
6403 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
6404 | flp->name = fieldname; | |
6405 | flp->length = 0; | |
6406 | flp->head = NULL; | |
3da10d80 | 6407 | i = fip->nfnfields++; |
c906108c SS |
6408 | } |
6409 | ||
6410 | /* Create a new member function field and chain it to the field list | |
6411 | entry. */ | |
6412 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 6413 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
6414 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
6415 | new_fnfield->next = flp->head; | |
6416 | flp->head = new_fnfield; | |
6417 | flp->length++; | |
6418 | ||
6419 | /* Fill in the member function field info. */ | |
6420 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
6421 | |
6422 | /* Delay processing of the physname until later. */ | |
6423 | if (cu->language == language_cplus || cu->language == language_java) | |
6424 | { | |
6425 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
6426 | die, cu); | |
6427 | } | |
6428 | else | |
6429 | { | |
6430 | char *physname = (char *) dwarf2_physname (fieldname, die, cu); | |
6431 | fnp->physname = physname ? physname : ""; | |
6432 | } | |
6433 | ||
c906108c | 6434 | fnp->type = alloc_type (objfile); |
f792889a DJ |
6435 | this_type = read_type_die (die, cu); |
6436 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 6437 | { |
f792889a | 6438 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 6439 | |
f792889a | 6440 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
6441 | of the method itself (TYPE_CODE_METHOD). */ |
6442 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
6443 | TYPE_TARGET_TYPE (this_type), |
6444 | TYPE_FIELDS (this_type), | |
6445 | TYPE_NFIELDS (this_type), | |
6446 | TYPE_VARARGS (this_type)); | |
c906108c SS |
6447 | |
6448 | /* Handle static member functions. | |
c5aa993b JM |
6449 | Dwarf2 has no clean way to discern C++ static and non-static |
6450 | member functions. G++ helps GDB by marking the first | |
6451 | parameter for non-static member functions (which is the | |
6452 | this pointer) as artificial. We obtain this information | |
6453 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 6454 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
6455 | fnp->voffset = VOFFSET_STATIC; |
6456 | } | |
6457 | else | |
e2e0b3e5 | 6458 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 6459 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
6460 | |
6461 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 6462 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 6463 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
6464 | |
6465 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
6466 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
6467 | ||
6468 | /* Get accessibility. */ | |
e142c38c | 6469 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
6470 | if (attr) |
6471 | { | |
6472 | switch (DW_UNSND (attr)) | |
6473 | { | |
c5aa993b JM |
6474 | case DW_ACCESS_private: |
6475 | fnp->is_private = 1; | |
6476 | break; | |
6477 | case DW_ACCESS_protected: | |
6478 | fnp->is_protected = 1; | |
6479 | break; | |
c906108c SS |
6480 | } |
6481 | } | |
6482 | ||
b02dede2 | 6483 | /* Check for artificial methods. */ |
e142c38c | 6484 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
6485 | if (attr && DW_UNSND (attr) != 0) |
6486 | fnp->is_artificial = 1; | |
6487 | ||
0d564a31 | 6488 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
6489 | function. For older versions of GCC, this is an offset in the |
6490 | appropriate virtual table, as specified by DW_AT_containing_type. | |
6491 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
6492 | to the object address. */ |
6493 | ||
e142c38c | 6494 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 6495 | if (attr) |
8e19ed76 | 6496 | { |
aec5aa8b | 6497 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 6498 | { |
aec5aa8b TT |
6499 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
6500 | { | |
6501 | /* Old-style GCC. */ | |
6502 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
6503 | } | |
6504 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
6505 | || (DW_BLOCK (attr)->size > 1 | |
6506 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
6507 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
6508 | { | |
6509 | struct dwarf_block blk; | |
6510 | int offset; | |
6511 | ||
6512 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
6513 | ? 1 : 2); | |
6514 | blk.size = DW_BLOCK (attr)->size - offset; | |
6515 | blk.data = DW_BLOCK (attr)->data + offset; | |
6516 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
6517 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
6518 | dwarf2_complex_location_expr_complaint (); | |
6519 | else | |
6520 | fnp->voffset /= cu->header.addr_size; | |
6521 | fnp->voffset += 2; | |
6522 | } | |
6523 | else | |
6524 | dwarf2_complex_location_expr_complaint (); | |
6525 | ||
6526 | if (!fnp->fcontext) | |
6527 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
6528 | } | |
3690dd37 | 6529 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 6530 | { |
4d3c2250 | 6531 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
6532 | } |
6533 | else | |
6534 | { | |
4d3c2250 KB |
6535 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
6536 | fieldname); | |
8e19ed76 | 6537 | } |
0d564a31 | 6538 | } |
d48cc9dd DJ |
6539 | else |
6540 | { | |
6541 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
6542 | if (attr && DW_UNSND (attr)) | |
6543 | { | |
6544 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
6545 | complaint (&symfile_complaints, | |
6546 | _("Member function \"%s\" (offset %d) is virtual but the vtable offset is not specified"), | |
6547 | fieldname, die->offset); | |
9655fd1a | 6548 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
6549 | TYPE_CPLUS_DYNAMIC (type) = 1; |
6550 | } | |
6551 | } | |
c906108c SS |
6552 | } |
6553 | ||
6554 | /* Create the vector of member function fields, and attach it to the type. */ | |
6555 | ||
6556 | static void | |
fba45db2 | 6557 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 6558 | struct dwarf2_cu *cu) |
c906108c SS |
6559 | { |
6560 | struct fnfieldlist *flp; | |
6561 | int total_length = 0; | |
6562 | int i; | |
6563 | ||
b4ba55a1 JB |
6564 | if (cu->language == language_ada) |
6565 | error ("unexpected member functions in Ada type"); | |
6566 | ||
c906108c SS |
6567 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
6568 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
6569 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
6570 | ||
6571 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
6572 | { | |
6573 | struct nextfnfield *nfp = flp->head; | |
6574 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
6575 | int k; | |
6576 | ||
6577 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
6578 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
6579 | fn_flp->fn_fields = (struct fn_field *) | |
6580 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
6581 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 6582 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
6583 | |
6584 | total_length += flp->length; | |
6585 | } | |
6586 | ||
6587 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
6588 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
6589 | } | |
6590 | ||
1168df01 JB |
6591 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
6592 | language, zero otherwise. */ | |
6593 | static int | |
6594 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
6595 | { | |
6596 | static const char vptr[] = "_vptr"; | |
987504bb | 6597 | static const char vtable[] = "vtable"; |
1168df01 | 6598 | |
987504bb JJ |
6599 | /* Look for the C++ and Java forms of the vtable. */ |
6600 | if ((cu->language == language_java | |
6601 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
6602 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
6603 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
6604 | return 1; |
6605 | ||
6606 | return 0; | |
6607 | } | |
6608 | ||
c0dd20ea | 6609 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
6610 | functions, with the ABI-specified layout. If TYPE describes |
6611 | such a structure, smash it into a member function type. | |
61049d3b DJ |
6612 | |
6613 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
6614 | This is GCC PR debug/28767. */ | |
c0dd20ea | 6615 | |
0b92b5bb TT |
6616 | static void |
6617 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 6618 | { |
0b92b5bb | 6619 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
6620 | |
6621 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
6622 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
6623 | return; | |
c0dd20ea DJ |
6624 | |
6625 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
6626 | if (TYPE_FIELD_NAME (type, 0) == NULL |
6627 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
6628 | || TYPE_FIELD_NAME (type, 1) == NULL | |
6629 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
6630 | return; | |
c0dd20ea DJ |
6631 | |
6632 | /* Find the type of the method. */ | |
0b92b5bb | 6633 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
6634 | if (pfn_type == NULL |
6635 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
6636 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 6637 | return; |
c0dd20ea DJ |
6638 | |
6639 | /* Look for the "this" argument. */ | |
6640 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
6641 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 6642 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 6643 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 6644 | return; |
c0dd20ea DJ |
6645 | |
6646 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
6647 | new_type = alloc_type (objfile); |
6648 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
6649 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
6650 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 6651 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 6652 | } |
1168df01 | 6653 | |
c906108c | 6654 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
6655 | (definition) to create a type for the structure or union. Fill in |
6656 | the type's name and general properties; the members will not be | |
6657 | processed until process_structure_type. | |
c906108c | 6658 | |
c767944b DJ |
6659 | NOTE: we need to call these functions regardless of whether or not the |
6660 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
6661 | structure or union. This gets the type entered into our set of |
6662 | user defined types. | |
6663 | ||
6664 | However, if the structure is incomplete (an opaque struct/union) | |
6665 | then suppress creating a symbol table entry for it since gdb only | |
6666 | wants to find the one with the complete definition. Note that if | |
6667 | it is complete, we just call new_symbol, which does it's own | |
6668 | checking about whether the struct/union is anonymous or not (and | |
6669 | suppresses creating a symbol table entry itself). */ | |
6670 | ||
f792889a | 6671 | static struct type * |
134d01f1 | 6672 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6673 | { |
e7c27a73 | 6674 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6675 | struct type *type; |
6676 | struct attribute *attr; | |
39cbfefa | 6677 | char *name; |
c906108c | 6678 | |
348e048f DE |
6679 | /* If the definition of this type lives in .debug_types, read that type. |
6680 | Don't follow DW_AT_specification though, that will take us back up | |
6681 | the chain and we want to go down. */ | |
6682 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
6683 | if (attr) | |
6684 | { | |
6685 | struct dwarf2_cu *type_cu = cu; | |
6686 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 6687 | |
348e048f DE |
6688 | /* We could just recurse on read_structure_type, but we need to call |
6689 | get_die_type to ensure only one type for this DIE is created. | |
6690 | This is important, for example, because for c++ classes we need | |
6691 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
6692 | type = read_type_die (type_die, type_cu); | |
9dc481d3 DE |
6693 | |
6694 | /* TYPE_CU may not be the same as CU. | |
6695 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
6696 | return set_die_type (die, type, cu); |
6697 | } | |
6698 | ||
c0dd20ea | 6699 | type = alloc_type (objfile); |
c906108c | 6700 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 6701 | |
39cbfefa DJ |
6702 | name = dwarf2_name (die, cu); |
6703 | if (name != NULL) | |
c906108c | 6704 | { |
987504bb JJ |
6705 | if (cu->language == language_cplus |
6706 | || cu->language == language_java) | |
63d06c5c | 6707 | { |
3da10d80 KS |
6708 | char *full_name = (char *) dwarf2_full_name (name, die, cu); |
6709 | ||
6710 | /* dwarf2_full_name might have already finished building the DIE's | |
6711 | type. If so, there is no need to continue. */ | |
6712 | if (get_die_type (die, cu) != NULL) | |
6713 | return get_die_type (die, cu); | |
6714 | ||
6715 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
6716 | if (die->tag == DW_TAG_structure_type |
6717 | || die->tag == DW_TAG_class_type) | |
6718 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
6719 | } |
6720 | else | |
6721 | { | |
d8151005 DJ |
6722 | /* The name is already allocated along with this objfile, so |
6723 | we don't need to duplicate it for the type. */ | |
94af9270 KS |
6724 | TYPE_TAG_NAME (type) = (char *) name; |
6725 | if (die->tag == DW_TAG_class_type) | |
6726 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 6727 | } |
c906108c SS |
6728 | } |
6729 | ||
6730 | if (die->tag == DW_TAG_structure_type) | |
6731 | { | |
6732 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
6733 | } | |
6734 | else if (die->tag == DW_TAG_union_type) | |
6735 | { | |
6736 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
6737 | } | |
6738 | else | |
6739 | { | |
c906108c SS |
6740 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
6741 | } | |
6742 | ||
0cc2414c TT |
6743 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
6744 | TYPE_DECLARED_CLASS (type) = 1; | |
6745 | ||
e142c38c | 6746 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
6747 | if (attr) |
6748 | { | |
6749 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
6750 | } | |
6751 | else | |
6752 | { | |
6753 | TYPE_LENGTH (type) = 0; | |
6754 | } | |
6755 | ||
876cecd0 | 6756 | TYPE_STUB_SUPPORTED (type) = 1; |
dc718098 | 6757 | if (die_is_declaration (die, cu)) |
876cecd0 | 6758 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
6759 | else if (attr == NULL && die->child == NULL |
6760 | && producer_is_realview (cu->producer)) | |
6761 | /* RealView does not output the required DW_AT_declaration | |
6762 | on incomplete types. */ | |
6763 | TYPE_STUB (type) = 1; | |
dc718098 | 6764 | |
c906108c SS |
6765 | /* We need to add the type field to the die immediately so we don't |
6766 | infinitely recurse when dealing with pointers to the structure | |
6767 | type within the structure itself. */ | |
1c379e20 | 6768 | set_die_type (die, type, cu); |
c906108c | 6769 | |
7e314c57 JK |
6770 | /* set_die_type should be already done. */ |
6771 | set_descriptive_type (type, die, cu); | |
6772 | ||
c767944b DJ |
6773 | return type; |
6774 | } | |
6775 | ||
6776 | /* Finish creating a structure or union type, including filling in | |
6777 | its members and creating a symbol for it. */ | |
6778 | ||
6779 | static void | |
6780 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
6781 | { | |
6782 | struct objfile *objfile = cu->objfile; | |
6783 | struct die_info *child_die = die->child; | |
6784 | struct type *type; | |
6785 | ||
6786 | type = get_die_type (die, cu); | |
6787 | if (type == NULL) | |
6788 | type = read_structure_type (die, cu); | |
6789 | ||
e142c38c | 6790 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
6791 | { |
6792 | struct field_info fi; | |
6793 | struct die_info *child_die; | |
34eaf542 | 6794 | VEC (symbolp) *template_args = NULL; |
c767944b | 6795 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
6796 | |
6797 | memset (&fi, 0, sizeof (struct field_info)); | |
6798 | ||
639d11d3 | 6799 | child_die = die->child; |
c906108c SS |
6800 | |
6801 | while (child_die && child_die->tag) | |
6802 | { | |
a9a9bd0f DC |
6803 | if (child_die->tag == DW_TAG_member |
6804 | || child_die->tag == DW_TAG_variable) | |
c906108c | 6805 | { |
a9a9bd0f DC |
6806 | /* NOTE: carlton/2002-11-05: A C++ static data member |
6807 | should be a DW_TAG_member that is a declaration, but | |
6808 | all versions of G++ as of this writing (so through at | |
6809 | least 3.2.1) incorrectly generate DW_TAG_variable | |
6810 | tags for them instead. */ | |
e7c27a73 | 6811 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 6812 | } |
8713b1b1 | 6813 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
6814 | { |
6815 | /* C++ member function. */ | |
e7c27a73 | 6816 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
6817 | } |
6818 | else if (child_die->tag == DW_TAG_inheritance) | |
6819 | { | |
6820 | /* C++ base class field. */ | |
e7c27a73 | 6821 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 6822 | } |
98751a41 JK |
6823 | else if (child_die->tag == DW_TAG_typedef) |
6824 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
6825 | else if (child_die->tag == DW_TAG_template_type_param |
6826 | || child_die->tag == DW_TAG_template_value_param) | |
6827 | { | |
6828 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
6829 | ||
f1078f66 DJ |
6830 | if (arg != NULL) |
6831 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
6832 | } |
6833 | ||
c906108c SS |
6834 | child_die = sibling_die (child_die); |
6835 | } | |
6836 | ||
34eaf542 TT |
6837 | /* Attach template arguments to type. */ |
6838 | if (! VEC_empty (symbolp, template_args)) | |
6839 | { | |
6840 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
6841 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
6842 | = VEC_length (symbolp, template_args); | |
6843 | TYPE_TEMPLATE_ARGUMENTS (type) | |
6844 | = obstack_alloc (&objfile->objfile_obstack, | |
6845 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
6846 | * sizeof (struct symbol *))); | |
6847 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
6848 | VEC_address (symbolp, template_args), | |
6849 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
6850 | * sizeof (struct symbol *))); | |
6851 | VEC_free (symbolp, template_args); | |
6852 | } | |
6853 | ||
c906108c SS |
6854 | /* Attach fields and member functions to the type. */ |
6855 | if (fi.nfields) | |
e7c27a73 | 6856 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
6857 | if (fi.nfnfields) |
6858 | { | |
e7c27a73 | 6859 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 6860 | |
c5aa993b | 6861 | /* Get the type which refers to the base class (possibly this |
c906108c | 6862 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
6863 | class from the DW_AT_containing_type attribute. This use of |
6864 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 6865 | |
e142c38c | 6866 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 6867 | { |
e7c27a73 | 6868 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
6869 | |
6870 | TYPE_VPTR_BASETYPE (type) = t; | |
6871 | if (type == t) | |
6872 | { | |
c906108c SS |
6873 | int i; |
6874 | ||
6875 | /* Our own class provides vtbl ptr. */ | |
6876 | for (i = TYPE_NFIELDS (t) - 1; | |
6877 | i >= TYPE_N_BASECLASSES (t); | |
6878 | --i) | |
6879 | { | |
6880 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
6881 | ||
1168df01 | 6882 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
6883 | { |
6884 | TYPE_VPTR_FIELDNO (type) = i; | |
6885 | break; | |
6886 | } | |
6887 | } | |
6888 | ||
6889 | /* Complain if virtual function table field not found. */ | |
6890 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 6891 | complaint (&symfile_complaints, |
e2e0b3e5 | 6892 | _("virtual function table pointer not found when defining class '%s'"), |
4d3c2250 KB |
6893 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
6894 | ""); | |
c906108c SS |
6895 | } |
6896 | else | |
6897 | { | |
6898 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
6899 | } | |
6900 | } | |
f6235d4c EZ |
6901 | else if (cu->producer |
6902 | && strncmp (cu->producer, | |
6903 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
6904 | { | |
6905 | /* The IBM XLC compiler does not provide direct indication | |
6906 | of the containing type, but the vtable pointer is | |
6907 | always named __vfp. */ | |
6908 | ||
6909 | int i; | |
6910 | ||
6911 | for (i = TYPE_NFIELDS (type) - 1; | |
6912 | i >= TYPE_N_BASECLASSES (type); | |
6913 | --i) | |
6914 | { | |
6915 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
6916 | { | |
6917 | TYPE_VPTR_FIELDNO (type) = i; | |
6918 | TYPE_VPTR_BASETYPE (type) = type; | |
6919 | break; | |
6920 | } | |
6921 | } | |
6922 | } | |
c906108c | 6923 | } |
98751a41 JK |
6924 | |
6925 | /* Copy fi.typedef_field_list linked list elements content into the | |
6926 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
6927 | if (fi.typedef_field_list) | |
6928 | { | |
6929 | int i = fi.typedef_field_list_count; | |
6930 | ||
a0d7a4ff | 6931 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
6932 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
6933 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
6934 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
6935 | ||
6936 | /* Reverse the list order to keep the debug info elements order. */ | |
6937 | while (--i >= 0) | |
6938 | { | |
6939 | struct typedef_field *dest, *src; | |
6e70227d | 6940 | |
98751a41 JK |
6941 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
6942 | src = &fi.typedef_field_list->field; | |
6943 | fi.typedef_field_list = fi.typedef_field_list->next; | |
6944 | *dest = *src; | |
6945 | } | |
6946 | } | |
c767944b DJ |
6947 | |
6948 | do_cleanups (back_to); | |
c906108c | 6949 | } |
63d06c5c | 6950 | |
0b92b5bb TT |
6951 | quirk_gcc_member_function_pointer (type, cu->objfile); |
6952 | ||
90aeadfc DC |
6953 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
6954 | snapshots) has been known to create a die giving a declaration | |
6955 | for a class that has, as a child, a die giving a definition for a | |
6956 | nested class. So we have to process our children even if the | |
6957 | current die is a declaration. Normally, of course, a declaration | |
6958 | won't have any children at all. */ | |
134d01f1 | 6959 | |
90aeadfc DC |
6960 | while (child_die != NULL && child_die->tag) |
6961 | { | |
6962 | if (child_die->tag == DW_TAG_member | |
6963 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
6964 | || child_die->tag == DW_TAG_inheritance |
6965 | || child_die->tag == DW_TAG_template_value_param | |
6966 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 6967 | { |
90aeadfc | 6968 | /* Do nothing. */ |
134d01f1 | 6969 | } |
90aeadfc DC |
6970 | else |
6971 | process_die (child_die, cu); | |
134d01f1 | 6972 | |
90aeadfc | 6973 | child_die = sibling_die (child_die); |
134d01f1 DJ |
6974 | } |
6975 | ||
fa4028e9 JB |
6976 | /* Do not consider external references. According to the DWARF standard, |
6977 | these DIEs are identified by the fact that they have no byte_size | |
6978 | attribute, and a declaration attribute. */ | |
6979 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
6980 | || !die_is_declaration (die, cu)) | |
c767944b | 6981 | new_symbol (die, type, cu); |
134d01f1 DJ |
6982 | } |
6983 | ||
6984 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
6985 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 6986 | |
f792889a | 6987 | static struct type * |
134d01f1 | 6988 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6989 | { |
e7c27a73 | 6990 | struct objfile *objfile = cu->objfile; |
c906108c | 6991 | struct type *type; |
c906108c | 6992 | struct attribute *attr; |
0114d602 | 6993 | const char *name; |
134d01f1 | 6994 | |
348e048f DE |
6995 | /* If the definition of this type lives in .debug_types, read that type. |
6996 | Don't follow DW_AT_specification though, that will take us back up | |
6997 | the chain and we want to go down. */ | |
6998 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
6999 | if (attr) | |
7000 | { | |
7001 | struct dwarf2_cu *type_cu = cu; | |
7002 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 7003 | |
348e048f | 7004 | type = read_type_die (type_die, type_cu); |
9dc481d3 DE |
7005 | |
7006 | /* TYPE_CU may not be the same as CU. | |
7007 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
7008 | return set_die_type (die, type, cu); |
7009 | } | |
7010 | ||
c906108c SS |
7011 | type = alloc_type (objfile); |
7012 | ||
7013 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 7014 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 7015 | if (name != NULL) |
0114d602 | 7016 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 7017 | |
e142c38c | 7018 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7019 | if (attr) |
7020 | { | |
7021 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7022 | } | |
7023 | else | |
7024 | { | |
7025 | TYPE_LENGTH (type) = 0; | |
7026 | } | |
7027 | ||
137033e9 JB |
7028 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
7029 | declared as private in the package spec, and then defined only | |
7030 | inside the package body. Such types are known as Taft Amendment | |
7031 | Types. When another package uses such a type, an incomplete DIE | |
7032 | may be generated by the compiler. */ | |
02eb380e | 7033 | if (die_is_declaration (die, cu)) |
876cecd0 | 7034 | TYPE_STUB (type) = 1; |
02eb380e | 7035 | |
f792889a | 7036 | return set_die_type (die, type, cu); |
134d01f1 DJ |
7037 | } |
7038 | ||
7039 | /* Given a pointer to a die which begins an enumeration, process all | |
7040 | the dies that define the members of the enumeration, and create the | |
7041 | symbol for the enumeration type. | |
7042 | ||
7043 | NOTE: We reverse the order of the element list. */ | |
7044 | ||
7045 | static void | |
7046 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
7047 | { | |
f792889a | 7048 | struct type *this_type; |
134d01f1 | 7049 | |
f792889a DJ |
7050 | this_type = get_die_type (die, cu); |
7051 | if (this_type == NULL) | |
7052 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 7053 | |
639d11d3 | 7054 | if (die->child != NULL) |
c906108c | 7055 | { |
9dc481d3 DE |
7056 | struct die_info *child_die; |
7057 | struct symbol *sym; | |
7058 | struct field *fields = NULL; | |
7059 | int num_fields = 0; | |
7060 | int unsigned_enum = 1; | |
7061 | char *name; | |
7062 | ||
639d11d3 | 7063 | child_die = die->child; |
c906108c SS |
7064 | while (child_die && child_die->tag) |
7065 | { | |
7066 | if (child_die->tag != DW_TAG_enumerator) | |
7067 | { | |
e7c27a73 | 7068 | process_die (child_die, cu); |
c906108c SS |
7069 | } |
7070 | else | |
7071 | { | |
39cbfefa DJ |
7072 | name = dwarf2_name (child_die, cu); |
7073 | if (name) | |
c906108c | 7074 | { |
f792889a | 7075 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
7076 | if (SYMBOL_VALUE (sym) < 0) |
7077 | unsigned_enum = 0; | |
7078 | ||
7079 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
7080 | { | |
7081 | fields = (struct field *) | |
7082 | xrealloc (fields, | |
7083 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 7084 | * sizeof (struct field)); |
c906108c SS |
7085 | } |
7086 | ||
3567439c | 7087 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 7088 | FIELD_TYPE (fields[num_fields]) = NULL; |
d6a843b5 | 7089 | SET_FIELD_BITPOS (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
7090 | FIELD_BITSIZE (fields[num_fields]) = 0; |
7091 | ||
7092 | num_fields++; | |
7093 | } | |
7094 | } | |
7095 | ||
7096 | child_die = sibling_die (child_die); | |
7097 | } | |
7098 | ||
7099 | if (num_fields) | |
7100 | { | |
f792889a DJ |
7101 | TYPE_NFIELDS (this_type) = num_fields; |
7102 | TYPE_FIELDS (this_type) = (struct field *) | |
7103 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
7104 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 7105 | sizeof (struct field) * num_fields); |
b8c9b27d | 7106 | xfree (fields); |
c906108c SS |
7107 | } |
7108 | if (unsigned_enum) | |
876cecd0 | 7109 | TYPE_UNSIGNED (this_type) = 1; |
c906108c | 7110 | } |
134d01f1 | 7111 | |
f792889a | 7112 | new_symbol (die, this_type, cu); |
c906108c SS |
7113 | } |
7114 | ||
7115 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
7116 | the DIE's type field. For now, this only handles one dimensional | |
7117 | arrays. */ | |
7118 | ||
f792889a | 7119 | static struct type * |
e7c27a73 | 7120 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7121 | { |
e7c27a73 | 7122 | struct objfile *objfile = cu->objfile; |
c906108c | 7123 | struct die_info *child_die; |
7e314c57 | 7124 | struct type *type; |
c906108c SS |
7125 | struct type *element_type, *range_type, *index_type; |
7126 | struct type **range_types = NULL; | |
7127 | struct attribute *attr; | |
7128 | int ndim = 0; | |
7129 | struct cleanup *back_to; | |
39cbfefa | 7130 | char *name; |
c906108c | 7131 | |
e7c27a73 | 7132 | element_type = die_type (die, cu); |
c906108c | 7133 | |
7e314c57 JK |
7134 | /* The die_type call above may have already set the type for this DIE. */ |
7135 | type = get_die_type (die, cu); | |
7136 | if (type) | |
7137 | return type; | |
7138 | ||
c906108c SS |
7139 | /* Irix 6.2 native cc creates array types without children for |
7140 | arrays with unspecified length. */ | |
639d11d3 | 7141 | if (die->child == NULL) |
c906108c | 7142 | { |
46bf5051 | 7143 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 7144 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
7145 | type = create_array_type (NULL, element_type, range_type); |
7146 | return set_die_type (die, type, cu); | |
c906108c SS |
7147 | } |
7148 | ||
7149 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 7150 | child_die = die->child; |
c906108c SS |
7151 | while (child_die && child_die->tag) |
7152 | { | |
7153 | if (child_die->tag == DW_TAG_subrange_type) | |
7154 | { | |
f792889a | 7155 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 7156 | |
f792889a | 7157 | if (child_type != NULL) |
a02abb62 JB |
7158 | { |
7159 | /* The range type was succesfully read. Save it for | |
7160 | the array type creation. */ | |
7161 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
7162 | { | |
7163 | range_types = (struct type **) | |
7164 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
7165 | * sizeof (struct type *)); | |
7166 | if (ndim == 0) | |
7167 | make_cleanup (free_current_contents, &range_types); | |
7168 | } | |
f792889a | 7169 | range_types[ndim++] = child_type; |
a02abb62 | 7170 | } |
c906108c SS |
7171 | } |
7172 | child_die = sibling_die (child_die); | |
7173 | } | |
7174 | ||
7175 | /* Dwarf2 dimensions are output from left to right, create the | |
7176 | necessary array types in backwards order. */ | |
7ca2d3a3 | 7177 | |
c906108c | 7178 | type = element_type; |
7ca2d3a3 DL |
7179 | |
7180 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
7181 | { | |
7182 | int i = 0; | |
9a619af0 | 7183 | |
7ca2d3a3 DL |
7184 | while (i < ndim) |
7185 | type = create_array_type (NULL, type, range_types[i++]); | |
7186 | } | |
7187 | else | |
7188 | { | |
7189 | while (ndim-- > 0) | |
7190 | type = create_array_type (NULL, type, range_types[ndim]); | |
7191 | } | |
c906108c | 7192 | |
f5f8a009 EZ |
7193 | /* Understand Dwarf2 support for vector types (like they occur on |
7194 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
7195 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
7196 | custom vendor extension. The main difference between a regular | |
7197 | array and the vector variant is that vectors are passed by value | |
7198 | to functions. */ | |
e142c38c | 7199 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 7200 | if (attr) |
ea37ba09 | 7201 | make_vector_type (type); |
f5f8a009 | 7202 | |
dbc98a8b KW |
7203 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
7204 | implementation may choose to implement triple vectors using this | |
7205 | attribute. */ | |
7206 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
7207 | if (attr) | |
7208 | { | |
7209 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
7210 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7211 | else | |
7212 | complaint (&symfile_complaints, _("\ | |
7213 | DW_AT_byte_size for array type smaller than the total size of elements")); | |
7214 | } | |
7215 | ||
39cbfefa DJ |
7216 | name = dwarf2_name (die, cu); |
7217 | if (name) | |
7218 | TYPE_NAME (type) = name; | |
6e70227d | 7219 | |
7e314c57 JK |
7220 | /* Install the type in the die. */ |
7221 | set_die_type (die, type, cu); | |
7222 | ||
7223 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
7224 | set_descriptive_type (type, die, cu); |
7225 | ||
c906108c SS |
7226 | do_cleanups (back_to); |
7227 | ||
7e314c57 | 7228 | return type; |
c906108c SS |
7229 | } |
7230 | ||
7ca2d3a3 | 7231 | static enum dwarf_array_dim_ordering |
6e70227d | 7232 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
7233 | { |
7234 | struct attribute *attr; | |
7235 | ||
7236 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
7237 | ||
7238 | if (attr) return DW_SND (attr); | |
7239 | ||
7240 | /* | |
7241 | GNU F77 is a special case, as at 08/2004 array type info is the | |
6e70227d | 7242 | opposite order to the dwarf2 specification, but data is still |
7ca2d3a3 DL |
7243 | laid out as per normal fortran. |
7244 | ||
6e70227d | 7245 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
7ca2d3a3 DL |
7246 | version checking. |
7247 | */ | |
7248 | ||
905e0470 PM |
7249 | if (cu->language == language_fortran |
7250 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
7251 | { |
7252 | return DW_ORD_row_major; | |
7253 | } | |
7254 | ||
6e70227d | 7255 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
7256 | { |
7257 | case array_column_major: | |
7258 | return DW_ORD_col_major; | |
7259 | case array_row_major: | |
7260 | default: | |
7261 | return DW_ORD_row_major; | |
7262 | }; | |
7263 | } | |
7264 | ||
72019c9c GM |
7265 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
7266 | the DIE's type field. */ | |
7267 | ||
f792889a | 7268 | static struct type * |
72019c9c GM |
7269 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
7270 | { | |
7e314c57 JK |
7271 | struct type *domain_type, *set_type; |
7272 | struct attribute *attr; | |
f792889a | 7273 | |
7e314c57 JK |
7274 | domain_type = die_type (die, cu); |
7275 | ||
7276 | /* The die_type call above may have already set the type for this DIE. */ | |
7277 | set_type = get_die_type (die, cu); | |
7278 | if (set_type) | |
7279 | return set_type; | |
7280 | ||
7281 | set_type = create_set_type (NULL, domain_type); | |
7282 | ||
7283 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
7284 | if (attr) |
7285 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 7286 | |
f792889a | 7287 | return set_die_type (die, set_type, cu); |
72019c9c | 7288 | } |
7ca2d3a3 | 7289 | |
c906108c SS |
7290 | /* First cut: install each common block member as a global variable. */ |
7291 | ||
7292 | static void | |
e7c27a73 | 7293 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7294 | { |
7295 | struct die_info *child_die; | |
7296 | struct attribute *attr; | |
7297 | struct symbol *sym; | |
7298 | CORE_ADDR base = (CORE_ADDR) 0; | |
7299 | ||
e142c38c | 7300 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7301 | if (attr) |
7302 | { | |
8e19ed76 PS |
7303 | /* Support the .debug_loc offsets */ |
7304 | if (attr_form_is_block (attr)) | |
7305 | { | |
e7c27a73 | 7306 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 7307 | } |
3690dd37 | 7308 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 7309 | { |
4d3c2250 | 7310 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
7311 | } |
7312 | else | |
7313 | { | |
4d3c2250 KB |
7314 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
7315 | "common block member"); | |
8e19ed76 | 7316 | } |
c906108c | 7317 | } |
639d11d3 | 7318 | if (die->child != NULL) |
c906108c | 7319 | { |
639d11d3 | 7320 | child_die = die->child; |
c906108c SS |
7321 | while (child_die && child_die->tag) |
7322 | { | |
e7c27a73 | 7323 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 7324 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
f1078f66 | 7325 | if (sym != NULL && attr != NULL) |
c906108c | 7326 | { |
d4b96c9a JK |
7327 | CORE_ADDR byte_offset = 0; |
7328 | ||
7329 | if (attr_form_is_section_offset (attr)) | |
7330 | dwarf2_complex_location_expr_complaint (); | |
7331 | else if (attr_form_is_constant (attr)) | |
7332 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); | |
7333 | else if (attr_form_is_block (attr)) | |
7334 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); | |
7335 | else | |
7336 | dwarf2_complex_location_expr_complaint (); | |
7337 | ||
7338 | SYMBOL_VALUE_ADDRESS (sym) = base + byte_offset; | |
c906108c SS |
7339 | add_symbol_to_list (sym, &global_symbols); |
7340 | } | |
7341 | child_die = sibling_die (child_die); | |
7342 | } | |
7343 | } | |
7344 | } | |
7345 | ||
0114d602 | 7346 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 7347 | |
0114d602 DJ |
7348 | static struct type * |
7349 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 7350 | { |
e7c27a73 | 7351 | struct objfile *objfile = cu->objfile; |
0114d602 | 7352 | const char *previous_prefix, *name; |
9219021c | 7353 | int is_anonymous; |
0114d602 DJ |
7354 | struct type *type; |
7355 | ||
7356 | /* For extensions, reuse the type of the original namespace. */ | |
7357 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
7358 | { | |
7359 | struct die_info *ext_die; | |
7360 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 7361 | |
0114d602 DJ |
7362 | ext_die = dwarf2_extension (die, &ext_cu); |
7363 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
7364 | |
7365 | /* EXT_CU may not be the same as CU. | |
7366 | Ensure TYPE is recorded in CU's type_hash table. */ | |
0114d602 DJ |
7367 | return set_die_type (die, type, cu); |
7368 | } | |
9219021c | 7369 | |
e142c38c | 7370 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
7371 | |
7372 | /* Now build the name of the current namespace. */ | |
7373 | ||
0114d602 DJ |
7374 | previous_prefix = determine_prefix (die, cu); |
7375 | if (previous_prefix[0] != '\0') | |
7376 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 7377 | previous_prefix, name, 0, cu); |
0114d602 DJ |
7378 | |
7379 | /* Create the type. */ | |
7380 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
7381 | objfile); | |
7382 | TYPE_NAME (type) = (char *) name; | |
7383 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7384 | ||
60531b24 | 7385 | return set_die_type (die, type, cu); |
0114d602 DJ |
7386 | } |
7387 | ||
7388 | /* Read a C++ namespace. */ | |
7389 | ||
7390 | static void | |
7391 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
7392 | { | |
7393 | struct objfile *objfile = cu->objfile; | |
7394 | const char *name; | |
7395 | int is_anonymous; | |
9219021c | 7396 | |
5c4e30ca DC |
7397 | /* Add a symbol associated to this if we haven't seen the namespace |
7398 | before. Also, add a using directive if it's an anonymous | |
7399 | namespace. */ | |
9219021c | 7400 | |
f2f0e013 | 7401 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
7402 | { |
7403 | struct type *type; | |
7404 | ||
0114d602 | 7405 | type = read_type_die (die, cu); |
e7c27a73 | 7406 | new_symbol (die, type, cu); |
5c4e30ca | 7407 | |
0114d602 | 7408 | name = namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 7409 | if (is_anonymous) |
0114d602 DJ |
7410 | { |
7411 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 7412 | |
c0cc3a76 | 7413 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
13387711 | 7414 | NULL, &objfile->objfile_obstack); |
0114d602 | 7415 | } |
5c4e30ca | 7416 | } |
9219021c | 7417 | |
639d11d3 | 7418 | if (die->child != NULL) |
d9fa45fe | 7419 | { |
639d11d3 | 7420 | struct die_info *child_die = die->child; |
6e70227d | 7421 | |
d9fa45fe DC |
7422 | while (child_die && child_die->tag) |
7423 | { | |
e7c27a73 | 7424 | process_die (child_die, cu); |
d9fa45fe DC |
7425 | child_die = sibling_die (child_die); |
7426 | } | |
7427 | } | |
38d518c9 EZ |
7428 | } |
7429 | ||
f55ee35c JK |
7430 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
7431 | imported module. Still we need that type as local Fortran "use ... only" | |
7432 | declaration imports depend on the created type in determine_prefix. */ | |
7433 | ||
7434 | static struct type * | |
7435 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
7436 | { | |
7437 | struct objfile *objfile = cu->objfile; | |
7438 | char *module_name; | |
7439 | struct type *type; | |
7440 | ||
7441 | module_name = dwarf2_name (die, cu); | |
7442 | if (!module_name) | |
7443 | complaint (&symfile_complaints, _("DW_TAG_module has no name, offset 0x%x"), | |
7444 | die->offset); | |
7445 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); | |
7446 | ||
7447 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
7448 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7449 | ||
7450 | return set_die_type (die, type, cu); | |
7451 | } | |
7452 | ||
5d7cb8df JK |
7453 | /* Read a Fortran module. */ |
7454 | ||
7455 | static void | |
7456 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
7457 | { | |
7458 | struct die_info *child_die = die->child; | |
7459 | ||
5d7cb8df JK |
7460 | while (child_die && child_die->tag) |
7461 | { | |
7462 | process_die (child_die, cu); | |
7463 | child_die = sibling_die (child_die); | |
7464 | } | |
7465 | } | |
7466 | ||
38d518c9 EZ |
7467 | /* Return the name of the namespace represented by DIE. Set |
7468 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
7469 | namespace. */ | |
7470 | ||
7471 | static const char * | |
e142c38c | 7472 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
7473 | { |
7474 | struct die_info *current_die; | |
7475 | const char *name = NULL; | |
7476 | ||
7477 | /* Loop through the extensions until we find a name. */ | |
7478 | ||
7479 | for (current_die = die; | |
7480 | current_die != NULL; | |
f2f0e013 | 7481 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 7482 | { |
e142c38c | 7483 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
7484 | if (name != NULL) |
7485 | break; | |
7486 | } | |
7487 | ||
7488 | /* Is it an anonymous namespace? */ | |
7489 | ||
7490 | *is_anonymous = (name == NULL); | |
7491 | if (*is_anonymous) | |
7492 | name = "(anonymous namespace)"; | |
7493 | ||
7494 | return name; | |
d9fa45fe DC |
7495 | } |
7496 | ||
c906108c SS |
7497 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
7498 | the user defined type vector. */ | |
7499 | ||
f792889a | 7500 | static struct type * |
e7c27a73 | 7501 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7502 | { |
5e2b427d | 7503 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 7504 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 7505 | struct type *type; |
8b2dbe47 KB |
7506 | struct attribute *attr_byte_size; |
7507 | struct attribute *attr_address_class; | |
7508 | int byte_size, addr_class; | |
7e314c57 JK |
7509 | struct type *target_type; |
7510 | ||
7511 | target_type = die_type (die, cu); | |
c906108c | 7512 | |
7e314c57 JK |
7513 | /* The die_type call above may have already set the type for this DIE. */ |
7514 | type = get_die_type (die, cu); | |
7515 | if (type) | |
7516 | return type; | |
7517 | ||
7518 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 7519 | |
e142c38c | 7520 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
7521 | if (attr_byte_size) |
7522 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 7523 | else |
8b2dbe47 KB |
7524 | byte_size = cu_header->addr_size; |
7525 | ||
e142c38c | 7526 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
7527 | if (attr_address_class) |
7528 | addr_class = DW_UNSND (attr_address_class); | |
7529 | else | |
7530 | addr_class = DW_ADDR_none; | |
7531 | ||
7532 | /* If the pointer size or address class is different than the | |
7533 | default, create a type variant marked as such and set the | |
7534 | length accordingly. */ | |
7535 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 7536 | { |
5e2b427d | 7537 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
7538 | { |
7539 | int type_flags; | |
7540 | ||
849957d9 | 7541 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 7542 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
7543 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
7544 | == 0); | |
8b2dbe47 KB |
7545 | type = make_type_with_address_space (type, type_flags); |
7546 | } | |
7547 | else if (TYPE_LENGTH (type) != byte_size) | |
7548 | { | |
e2e0b3e5 | 7549 | complaint (&symfile_complaints, _("invalid pointer size %d"), byte_size); |
8b2dbe47 | 7550 | } |
6e70227d | 7551 | else |
9a619af0 MS |
7552 | { |
7553 | /* Should we also complain about unhandled address classes? */ | |
7554 | } | |
c906108c | 7555 | } |
8b2dbe47 KB |
7556 | |
7557 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 7558 | return set_die_type (die, type, cu); |
c906108c SS |
7559 | } |
7560 | ||
7561 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
7562 | the user defined type vector. */ | |
7563 | ||
f792889a | 7564 | static struct type * |
e7c27a73 | 7565 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7566 | { |
7567 | struct type *type; | |
7568 | struct type *to_type; | |
7569 | struct type *domain; | |
7570 | ||
e7c27a73 DJ |
7571 | to_type = die_type (die, cu); |
7572 | domain = die_containing_type (die, cu); | |
0d5de010 | 7573 | |
7e314c57 JK |
7574 | /* The calls above may have already set the type for this DIE. */ |
7575 | type = get_die_type (die, cu); | |
7576 | if (type) | |
7577 | return type; | |
7578 | ||
0d5de010 DJ |
7579 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
7580 | type = lookup_methodptr_type (to_type); | |
7581 | else | |
7582 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 7583 | |
f792889a | 7584 | return set_die_type (die, type, cu); |
c906108c SS |
7585 | } |
7586 | ||
7587 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
7588 | the user defined type vector. */ | |
7589 | ||
f792889a | 7590 | static struct type * |
e7c27a73 | 7591 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7592 | { |
e7c27a73 | 7593 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 7594 | struct type *type, *target_type; |
c906108c SS |
7595 | struct attribute *attr; |
7596 | ||
7e314c57 JK |
7597 | target_type = die_type (die, cu); |
7598 | ||
7599 | /* The die_type call above may have already set the type for this DIE. */ | |
7600 | type = get_die_type (die, cu); | |
7601 | if (type) | |
7602 | return type; | |
7603 | ||
7604 | type = lookup_reference_type (target_type); | |
e142c38c | 7605 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7606 | if (attr) |
7607 | { | |
7608 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7609 | } | |
7610 | else | |
7611 | { | |
107d2387 | 7612 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 7613 | } |
f792889a | 7614 | return set_die_type (die, type, cu); |
c906108c SS |
7615 | } |
7616 | ||
f792889a | 7617 | static struct type * |
e7c27a73 | 7618 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7619 | { |
f792889a | 7620 | struct type *base_type, *cv_type; |
c906108c | 7621 | |
e7c27a73 | 7622 | base_type = die_type (die, cu); |
7e314c57 JK |
7623 | |
7624 | /* The die_type call above may have already set the type for this DIE. */ | |
7625 | cv_type = get_die_type (die, cu); | |
7626 | if (cv_type) | |
7627 | return cv_type; | |
7628 | ||
2f608a3a KW |
7629 | /* In case the const qualifier is applied to an array type, the element type |
7630 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
7631 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
7632 | { | |
7633 | struct type *el_type, *inner_array; | |
7634 | ||
7635 | base_type = copy_type (base_type); | |
7636 | inner_array = base_type; | |
7637 | ||
7638 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
7639 | { | |
7640 | TYPE_TARGET_TYPE (inner_array) = | |
7641 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
7642 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
7643 | } | |
7644 | ||
7645 | el_type = TYPE_TARGET_TYPE (inner_array); | |
7646 | TYPE_TARGET_TYPE (inner_array) = | |
7647 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
7648 | ||
7649 | return set_die_type (die, base_type, cu); | |
7650 | } | |
7651 | ||
f792889a DJ |
7652 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
7653 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
7654 | } |
7655 | ||
f792889a | 7656 | static struct type * |
e7c27a73 | 7657 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7658 | { |
f792889a | 7659 | struct type *base_type, *cv_type; |
c906108c | 7660 | |
e7c27a73 | 7661 | base_type = die_type (die, cu); |
7e314c57 JK |
7662 | |
7663 | /* The die_type call above may have already set the type for this DIE. */ | |
7664 | cv_type = get_die_type (die, cu); | |
7665 | if (cv_type) | |
7666 | return cv_type; | |
7667 | ||
f792889a DJ |
7668 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
7669 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
7670 | } |
7671 | ||
7672 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
7673 | the user defined type vector. It isn't really a user defined type, | |
7674 | but it behaves like one, with other DIE's using an AT_user_def_type | |
7675 | attribute to reference it. */ | |
7676 | ||
f792889a | 7677 | static struct type * |
e7c27a73 | 7678 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7679 | { |
e7c27a73 | 7680 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 7681 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
7682 | struct type *type, *range_type, *index_type, *char_type; |
7683 | struct attribute *attr; | |
7684 | unsigned int length; | |
7685 | ||
e142c38c | 7686 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
7687 | if (attr) |
7688 | { | |
7689 | length = DW_UNSND (attr); | |
7690 | } | |
7691 | else | |
7692 | { | |
b21b22e0 | 7693 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 7694 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
7695 | if (attr) |
7696 | { | |
7697 | length = DW_UNSND (attr); | |
7698 | } | |
7699 | else | |
7700 | { | |
7701 | length = 1; | |
7702 | } | |
c906108c | 7703 | } |
6ccb9162 | 7704 | |
46bf5051 | 7705 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 7706 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
7707 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
7708 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 7709 | |
f792889a | 7710 | return set_die_type (die, type, cu); |
c906108c SS |
7711 | } |
7712 | ||
7713 | /* Handle DIES due to C code like: | |
7714 | ||
7715 | struct foo | |
c5aa993b JM |
7716 | { |
7717 | int (*funcp)(int a, long l); | |
7718 | int b; | |
7719 | }; | |
c906108c SS |
7720 | |
7721 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 7722 | */ |
c906108c | 7723 | |
f792889a | 7724 | static struct type * |
e7c27a73 | 7725 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7726 | { |
7727 | struct type *type; /* Type that this function returns */ | |
7728 | struct type *ftype; /* Function that returns above type */ | |
7729 | struct attribute *attr; | |
7730 | ||
e7c27a73 | 7731 | type = die_type (die, cu); |
7e314c57 JK |
7732 | |
7733 | /* The die_type call above may have already set the type for this DIE. */ | |
7734 | ftype = get_die_type (die, cu); | |
7735 | if (ftype) | |
7736 | return ftype; | |
7737 | ||
0c8b41f1 | 7738 | ftype = lookup_function_type (type); |
c906108c | 7739 | |
5b8101ae | 7740 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 7741 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 7742 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 7743 | || cu->language == language_cplus |
5b8101ae PM |
7744 | || cu->language == language_java |
7745 | || cu->language == language_pascal) | |
876cecd0 | 7746 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
7747 | else if (producer_is_realview (cu->producer)) |
7748 | /* RealView does not emit DW_AT_prototyped. We can not | |
7749 | distinguish prototyped and unprototyped functions; default to | |
7750 | prototyped, since that is more common in modern code (and | |
7751 | RealView warns about unprototyped functions). */ | |
7752 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 7753 | |
c055b101 CV |
7754 | /* Store the calling convention in the type if it's available in |
7755 | the subroutine die. Otherwise set the calling convention to | |
7756 | the default value DW_CC_normal. */ | |
7757 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
7758 | TYPE_CALLING_CONVENTION (ftype) = attr ? DW_UNSND (attr) : DW_CC_normal; | |
76c10ea2 GM |
7759 | |
7760 | /* We need to add the subroutine type to the die immediately so | |
7761 | we don't infinitely recurse when dealing with parameters | |
7762 | declared as the same subroutine type. */ | |
7763 | set_die_type (die, ftype, cu); | |
6e70227d | 7764 | |
639d11d3 | 7765 | if (die->child != NULL) |
c906108c | 7766 | { |
8072405b | 7767 | struct type *void_type = objfile_type (cu->objfile)->builtin_void; |
c906108c | 7768 | struct die_info *child_die; |
8072405b | 7769 | int nparams, iparams; |
c906108c SS |
7770 | |
7771 | /* Count the number of parameters. | |
7772 | FIXME: GDB currently ignores vararg functions, but knows about | |
7773 | vararg member functions. */ | |
8072405b | 7774 | nparams = 0; |
639d11d3 | 7775 | child_die = die->child; |
c906108c SS |
7776 | while (child_die && child_die->tag) |
7777 | { | |
7778 | if (child_die->tag == DW_TAG_formal_parameter) | |
7779 | nparams++; | |
7780 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 7781 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
7782 | child_die = sibling_die (child_die); |
7783 | } | |
7784 | ||
7785 | /* Allocate storage for parameters and fill them in. */ | |
7786 | TYPE_NFIELDS (ftype) = nparams; | |
7787 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 7788 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 7789 | |
8072405b JK |
7790 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
7791 | even if we error out during the parameters reading below. */ | |
7792 | for (iparams = 0; iparams < nparams; iparams++) | |
7793 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
7794 | ||
7795 | iparams = 0; | |
639d11d3 | 7796 | child_die = die->child; |
c906108c SS |
7797 | while (child_die && child_die->tag) |
7798 | { | |
7799 | if (child_die->tag == DW_TAG_formal_parameter) | |
7800 | { | |
3ce3b1ba PA |
7801 | struct type *arg_type; |
7802 | ||
7803 | /* DWARF version 2 has no clean way to discern C++ | |
7804 | static and non-static member functions. G++ helps | |
7805 | GDB by marking the first parameter for non-static | |
7806 | member functions (which is the this pointer) as | |
7807 | artificial. We pass this information to | |
7808 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
7809 | ||
7810 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
7811 | 4.5 does not yet generate. */ | |
e142c38c | 7812 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
7813 | if (attr) |
7814 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
7815 | else | |
418835cc KS |
7816 | { |
7817 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
7818 | ||
7819 | /* GCC/43521: In java, the formal parameter | |
7820 | "this" is sometimes not marked with DW_AT_artificial. */ | |
7821 | if (cu->language == language_java) | |
7822 | { | |
7823 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 7824 | |
418835cc KS |
7825 | if (name && !strcmp (name, "this")) |
7826 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
7827 | } | |
7828 | } | |
3ce3b1ba PA |
7829 | arg_type = die_type (child_die, cu); |
7830 | ||
7831 | /* RealView does not mark THIS as const, which the testsuite | |
7832 | expects. GCC marks THIS as const in method definitions, | |
7833 | but not in the class specifications (GCC PR 43053). */ | |
7834 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
7835 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
7836 | { | |
7837 | int is_this = 0; | |
7838 | struct dwarf2_cu *arg_cu = cu; | |
7839 | const char *name = dwarf2_name (child_die, cu); | |
7840 | ||
7841 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
7842 | if (attr) | |
7843 | { | |
7844 | /* If the compiler emits this, use it. */ | |
7845 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
7846 | is_this = 1; | |
7847 | } | |
7848 | else if (name && strcmp (name, "this") == 0) | |
7849 | /* Function definitions will have the argument names. */ | |
7850 | is_this = 1; | |
7851 | else if (name == NULL && iparams == 0) | |
7852 | /* Declarations may not have the names, so like | |
7853 | elsewhere in GDB, assume an artificial first | |
7854 | argument is "this". */ | |
7855 | is_this = 1; | |
7856 | ||
7857 | if (is_this) | |
7858 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
7859 | arg_type, 0); | |
7860 | } | |
7861 | ||
7862 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
7863 | iparams++; |
7864 | } | |
7865 | child_die = sibling_die (child_die); | |
7866 | } | |
7867 | } | |
7868 | ||
76c10ea2 | 7869 | return ftype; |
c906108c SS |
7870 | } |
7871 | ||
f792889a | 7872 | static struct type * |
e7c27a73 | 7873 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7874 | { |
e7c27a73 | 7875 | struct objfile *objfile = cu->objfile; |
0114d602 | 7876 | const char *name = NULL; |
f792889a | 7877 | struct type *this_type; |
c906108c | 7878 | |
94af9270 | 7879 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 7880 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
7881 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
7882 | TYPE_NAME (this_type) = (char *) name; | |
f792889a DJ |
7883 | set_die_type (die, this_type, cu); |
7884 | TYPE_TARGET_TYPE (this_type) = die_type (die, cu); | |
7885 | return this_type; | |
c906108c SS |
7886 | } |
7887 | ||
7888 | /* Find a representation of a given base type and install | |
7889 | it in the TYPE field of the die. */ | |
7890 | ||
f792889a | 7891 | static struct type * |
e7c27a73 | 7892 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7893 | { |
e7c27a73 | 7894 | struct objfile *objfile = cu->objfile; |
c906108c SS |
7895 | struct type *type; |
7896 | struct attribute *attr; | |
7897 | int encoding = 0, size = 0; | |
39cbfefa | 7898 | char *name; |
6ccb9162 UW |
7899 | enum type_code code = TYPE_CODE_INT; |
7900 | int type_flags = 0; | |
7901 | struct type *target_type = NULL; | |
c906108c | 7902 | |
e142c38c | 7903 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
7904 | if (attr) |
7905 | { | |
7906 | encoding = DW_UNSND (attr); | |
7907 | } | |
e142c38c | 7908 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7909 | if (attr) |
7910 | { | |
7911 | size = DW_UNSND (attr); | |
7912 | } | |
39cbfefa | 7913 | name = dwarf2_name (die, cu); |
6ccb9162 | 7914 | if (!name) |
c906108c | 7915 | { |
6ccb9162 UW |
7916 | complaint (&symfile_complaints, |
7917 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 7918 | } |
6ccb9162 UW |
7919 | |
7920 | switch (encoding) | |
c906108c | 7921 | { |
6ccb9162 UW |
7922 | case DW_ATE_address: |
7923 | /* Turn DW_ATE_address into a void * pointer. */ | |
7924 | code = TYPE_CODE_PTR; | |
7925 | type_flags |= TYPE_FLAG_UNSIGNED; | |
7926 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
7927 | break; | |
7928 | case DW_ATE_boolean: | |
7929 | code = TYPE_CODE_BOOL; | |
7930 | type_flags |= TYPE_FLAG_UNSIGNED; | |
7931 | break; | |
7932 | case DW_ATE_complex_float: | |
7933 | code = TYPE_CODE_COMPLEX; | |
7934 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
7935 | break; | |
7936 | case DW_ATE_decimal_float: | |
7937 | code = TYPE_CODE_DECFLOAT; | |
7938 | break; | |
7939 | case DW_ATE_float: | |
7940 | code = TYPE_CODE_FLT; | |
7941 | break; | |
7942 | case DW_ATE_signed: | |
7943 | break; | |
7944 | case DW_ATE_unsigned: | |
7945 | type_flags |= TYPE_FLAG_UNSIGNED; | |
7946 | break; | |
7947 | case DW_ATE_signed_char: | |
6e70227d | 7948 | if (cu->language == language_ada || cu->language == language_m2 |
868a0084 | 7949 | || cu->language == language_pascal) |
6ccb9162 UW |
7950 | code = TYPE_CODE_CHAR; |
7951 | break; | |
7952 | case DW_ATE_unsigned_char: | |
868a0084 PM |
7953 | if (cu->language == language_ada || cu->language == language_m2 |
7954 | || cu->language == language_pascal) | |
6ccb9162 UW |
7955 | code = TYPE_CODE_CHAR; |
7956 | type_flags |= TYPE_FLAG_UNSIGNED; | |
7957 | break; | |
75079b2b TT |
7958 | case DW_ATE_UTF: |
7959 | /* We just treat this as an integer and then recognize the | |
7960 | type by name elsewhere. */ | |
7961 | break; | |
7962 | ||
6ccb9162 UW |
7963 | default: |
7964 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
7965 | dwarf_type_encoding_name (encoding)); | |
7966 | break; | |
c906108c | 7967 | } |
6ccb9162 | 7968 | |
0114d602 DJ |
7969 | type = init_type (code, size, type_flags, NULL, objfile); |
7970 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
7971 | TYPE_TARGET_TYPE (type) = target_type; |
7972 | ||
0114d602 | 7973 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 7974 | TYPE_NOSIGN (type) = 1; |
0114d602 | 7975 | |
f792889a | 7976 | return set_die_type (die, type, cu); |
c906108c SS |
7977 | } |
7978 | ||
a02abb62 JB |
7979 | /* Read the given DW_AT_subrange DIE. */ |
7980 | ||
f792889a | 7981 | static struct type * |
a02abb62 JB |
7982 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
7983 | { | |
5e2b427d | 7984 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
a02abb62 JB |
7985 | struct type *base_type; |
7986 | struct type *range_type; | |
7987 | struct attribute *attr; | |
43bbcdc2 PH |
7988 | LONGEST low = 0; |
7989 | LONGEST high = -1; | |
39cbfefa | 7990 | char *name; |
43bbcdc2 | 7991 | LONGEST negative_mask; |
e77813c8 | 7992 | |
a02abb62 | 7993 | base_type = die_type (die, cu); |
953ac07e JK |
7994 | /* Preserve BASE_TYPE's original type, just set its LENGTH. */ |
7995 | check_typedef (base_type); | |
a02abb62 | 7996 | |
7e314c57 JK |
7997 | /* The die_type call above may have already set the type for this DIE. */ |
7998 | range_type = get_die_type (die, cu); | |
7999 | if (range_type) | |
8000 | return range_type; | |
8001 | ||
e142c38c | 8002 | if (cu->language == language_fortran) |
6e70227d | 8003 | { |
a02abb62 JB |
8004 | /* FORTRAN implies a lower bound of 1, if not given. */ |
8005 | low = 1; | |
8006 | } | |
8007 | ||
dd5e6932 DJ |
8008 | /* FIXME: For variable sized arrays either of these could be |
8009 | a variable rather than a constant value. We'll allow it, | |
8010 | but we don't know how to handle it. */ | |
e142c38c | 8011 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
8012 | if (attr) |
8013 | low = dwarf2_get_attr_constant_value (attr, 0); | |
8014 | ||
e142c38c | 8015 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 8016 | if (attr) |
6e70227d | 8017 | { |
e77813c8 | 8018 | if (attr->form == DW_FORM_block1 || is_ref_attr (attr)) |
a02abb62 JB |
8019 | { |
8020 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 8021 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
8022 | FIXME: GDB does not yet know how to handle dynamic |
8023 | arrays properly, treat them as arrays with unspecified | |
8024 | length for now. | |
8025 | ||
8026 | FIXME: jimb/2003-09-22: GDB does not really know | |
8027 | how to handle arrays of unspecified length | |
8028 | either; we just represent them as zero-length | |
8029 | arrays. Choose an appropriate upper bound given | |
8030 | the lower bound we've computed above. */ | |
8031 | high = low - 1; | |
8032 | } | |
8033 | else | |
8034 | high = dwarf2_get_attr_constant_value (attr, 1); | |
8035 | } | |
e77813c8 PM |
8036 | else |
8037 | { | |
8038 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
8039 | if (attr) | |
8040 | { | |
8041 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
8042 | high = low + count - 1; | |
8043 | } | |
8044 | } | |
8045 | ||
8046 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
8047 | without specifying a base type. | |
8048 | In that case, the base type must be set to the type of | |
8049 | the lower bound, upper bound or count, in that order, if any of these | |
8050 | three attributes references an object that has a type. | |
8051 | If no base type is found, the Dwarf-2 specifications say that | |
8052 | a signed integer type of size equal to the size of an address should | |
8053 | be used. | |
8054 | For the following C code: `extern char gdb_int [];' | |
8055 | GCC produces an empty range DIE. | |
8056 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
8057 | high bound or count are not yet handled by this code. | |
8058 | */ | |
8059 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) | |
8060 | { | |
8061 | struct objfile *objfile = cu->objfile; | |
8062 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8063 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
8064 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
8065 | ||
8066 | /* Test "int", "long int", and "long long int" objfile types, | |
8067 | and select the first one having a size above or equal to the | |
8068 | architecture address size. */ | |
8069 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
8070 | base_type = int_type; | |
8071 | else | |
8072 | { | |
8073 | int_type = objfile_type (objfile)->builtin_long; | |
8074 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
8075 | base_type = int_type; | |
8076 | else | |
8077 | { | |
8078 | int_type = objfile_type (objfile)->builtin_long_long; | |
8079 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
8080 | base_type = int_type; | |
8081 | } | |
8082 | } | |
8083 | } | |
a02abb62 | 8084 | |
6e70227d | 8085 | negative_mask = |
43bbcdc2 PH |
8086 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
8087 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
8088 | low |= negative_mask; | |
8089 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
8090 | high |= negative_mask; | |
8091 | ||
a02abb62 JB |
8092 | range_type = create_range_type (NULL, base_type, low, high); |
8093 | ||
bbb0eef6 JK |
8094 | /* Mark arrays with dynamic length at least as an array of unspecified |
8095 | length. GDB could check the boundary but before it gets implemented at | |
8096 | least allow accessing the array elements. */ | |
8097 | if (attr && attr->form == DW_FORM_block1) | |
8098 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
8099 | ||
39cbfefa DJ |
8100 | name = dwarf2_name (die, cu); |
8101 | if (name) | |
8102 | TYPE_NAME (range_type) = name; | |
6e70227d | 8103 | |
e142c38c | 8104 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
8105 | if (attr) |
8106 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
8107 | ||
7e314c57 JK |
8108 | set_die_type (die, range_type, cu); |
8109 | ||
8110 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
8111 | set_descriptive_type (range_type, die, cu); |
8112 | ||
7e314c57 | 8113 | return range_type; |
a02abb62 | 8114 | } |
6e70227d | 8115 | |
f792889a | 8116 | static struct type * |
81a17f79 JB |
8117 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
8118 | { | |
8119 | struct type *type; | |
81a17f79 | 8120 | |
81a17f79 JB |
8121 | /* For now, we only support the C meaning of an unspecified type: void. */ |
8122 | ||
0114d602 DJ |
8123 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
8124 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 8125 | |
f792889a | 8126 | return set_die_type (die, type, cu); |
81a17f79 | 8127 | } |
a02abb62 | 8128 | |
51545339 DJ |
8129 | /* Trivial hash function for die_info: the hash value of a DIE |
8130 | is its offset in .debug_info for this objfile. */ | |
8131 | ||
8132 | static hashval_t | |
8133 | die_hash (const void *item) | |
8134 | { | |
8135 | const struct die_info *die = item; | |
9a619af0 | 8136 | |
51545339 DJ |
8137 | return die->offset; |
8138 | } | |
8139 | ||
8140 | /* Trivial comparison function for die_info structures: two DIEs | |
8141 | are equal if they have the same offset. */ | |
8142 | ||
8143 | static int | |
8144 | die_eq (const void *item_lhs, const void *item_rhs) | |
8145 | { | |
8146 | const struct die_info *die_lhs = item_lhs; | |
8147 | const struct die_info *die_rhs = item_rhs; | |
9a619af0 | 8148 | |
51545339 DJ |
8149 | return die_lhs->offset == die_rhs->offset; |
8150 | } | |
8151 | ||
c906108c SS |
8152 | /* Read a whole compilation unit into a linked list of dies. */ |
8153 | ||
f9aca02d | 8154 | static struct die_info * |
93311388 | 8155 | read_comp_unit (gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 8156 | { |
93311388 | 8157 | struct die_reader_specs reader_specs; |
98bfdba5 | 8158 | int read_abbrevs = 0; |
1d9ec526 | 8159 | struct cleanup *back_to = NULL; |
98bfdba5 PA |
8160 | struct die_info *die; |
8161 | ||
8162 | if (cu->dwarf2_abbrevs == NULL) | |
8163 | { | |
8164 | dwarf2_read_abbrevs (cu->objfile->obfd, cu); | |
8165 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
8166 | read_abbrevs = 1; | |
8167 | } | |
93311388 | 8168 | |
348e048f | 8169 | gdb_assert (cu->die_hash == NULL); |
51545339 DJ |
8170 | cu->die_hash |
8171 | = htab_create_alloc_ex (cu->header.length / 12, | |
8172 | die_hash, | |
8173 | die_eq, | |
8174 | NULL, | |
8175 | &cu->comp_unit_obstack, | |
8176 | hashtab_obstack_allocate, | |
8177 | dummy_obstack_deallocate); | |
8178 | ||
93311388 DE |
8179 | init_cu_die_reader (&reader_specs, cu); |
8180 | ||
98bfdba5 PA |
8181 | die = read_die_and_children (&reader_specs, info_ptr, &info_ptr, NULL); |
8182 | ||
8183 | if (read_abbrevs) | |
8184 | do_cleanups (back_to); | |
8185 | ||
8186 | return die; | |
639d11d3 DC |
8187 | } |
8188 | ||
d97bc12b DE |
8189 | /* Main entry point for reading a DIE and all children. |
8190 | Read the DIE and dump it if requested. */ | |
8191 | ||
8192 | static struct die_info * | |
93311388 DE |
8193 | read_die_and_children (const struct die_reader_specs *reader, |
8194 | gdb_byte *info_ptr, | |
d97bc12b DE |
8195 | gdb_byte **new_info_ptr, |
8196 | struct die_info *parent) | |
8197 | { | |
93311388 | 8198 | struct die_info *result = read_die_and_children_1 (reader, info_ptr, |
d97bc12b DE |
8199 | new_info_ptr, parent); |
8200 | ||
8201 | if (dwarf2_die_debug) | |
8202 | { | |
348e048f DE |
8203 | fprintf_unfiltered (gdb_stdlog, |
8204 | "\nRead die from %s of %s:\n", | |
8205 | reader->buffer == dwarf2_per_objfile->info.buffer | |
8206 | ? ".debug_info" | |
8207 | : reader->buffer == dwarf2_per_objfile->types.buffer | |
8208 | ? ".debug_types" | |
8209 | : "unknown section", | |
8210 | reader->abfd->filename); | |
d97bc12b DE |
8211 | dump_die (result, dwarf2_die_debug); |
8212 | } | |
8213 | ||
8214 | return result; | |
8215 | } | |
8216 | ||
639d11d3 DC |
8217 | /* Read a single die and all its descendents. Set the die's sibling |
8218 | field to NULL; set other fields in the die correctly, and set all | |
8219 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
8220 | location of the info_ptr after reading all of those dies. PARENT | |
8221 | is the parent of the die in question. */ | |
8222 | ||
8223 | static struct die_info * | |
93311388 DE |
8224 | read_die_and_children_1 (const struct die_reader_specs *reader, |
8225 | gdb_byte *info_ptr, | |
d97bc12b DE |
8226 | gdb_byte **new_info_ptr, |
8227 | struct die_info *parent) | |
639d11d3 DC |
8228 | { |
8229 | struct die_info *die; | |
fe1b8b76 | 8230 | gdb_byte *cur_ptr; |
639d11d3 DC |
8231 | int has_children; |
8232 | ||
93311388 | 8233 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
8234 | if (die == NULL) |
8235 | { | |
8236 | *new_info_ptr = cur_ptr; | |
8237 | return NULL; | |
8238 | } | |
93311388 | 8239 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
8240 | |
8241 | if (has_children) | |
348e048f | 8242 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
8243 | else |
8244 | { | |
8245 | die->child = NULL; | |
8246 | *new_info_ptr = cur_ptr; | |
8247 | } | |
8248 | ||
8249 | die->sibling = NULL; | |
8250 | die->parent = parent; | |
8251 | return die; | |
8252 | } | |
8253 | ||
8254 | /* Read a die, all of its descendents, and all of its siblings; set | |
8255 | all of the fields of all of the dies correctly. Arguments are as | |
8256 | in read_die_and_children. */ | |
8257 | ||
8258 | static struct die_info * | |
93311388 DE |
8259 | read_die_and_siblings (const struct die_reader_specs *reader, |
8260 | gdb_byte *info_ptr, | |
fe1b8b76 | 8261 | gdb_byte **new_info_ptr, |
639d11d3 DC |
8262 | struct die_info *parent) |
8263 | { | |
8264 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 8265 | gdb_byte *cur_ptr; |
639d11d3 | 8266 | |
c906108c | 8267 | cur_ptr = info_ptr; |
639d11d3 DC |
8268 | first_die = last_sibling = NULL; |
8269 | ||
8270 | while (1) | |
c906108c | 8271 | { |
639d11d3 | 8272 | struct die_info *die |
93311388 | 8273 | = read_die_and_children_1 (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 8274 | |
1d325ec1 | 8275 | if (die == NULL) |
c906108c | 8276 | { |
639d11d3 DC |
8277 | *new_info_ptr = cur_ptr; |
8278 | return first_die; | |
c906108c | 8279 | } |
1d325ec1 DJ |
8280 | |
8281 | if (!first_die) | |
8282 | first_die = die; | |
c906108c | 8283 | else |
1d325ec1 DJ |
8284 | last_sibling->sibling = die; |
8285 | ||
8286 | last_sibling = die; | |
c906108c | 8287 | } |
c906108c SS |
8288 | } |
8289 | ||
93311388 DE |
8290 | /* Read the die from the .debug_info section buffer. Set DIEP to |
8291 | point to a newly allocated die with its information, except for its | |
8292 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
8293 | whether the die has children or not. */ | |
8294 | ||
8295 | static gdb_byte * | |
8296 | read_full_die (const struct die_reader_specs *reader, | |
8297 | struct die_info **diep, gdb_byte *info_ptr, | |
8298 | int *has_children) | |
8299 | { | |
8300 | unsigned int abbrev_number, bytes_read, i, offset; | |
8301 | struct abbrev_info *abbrev; | |
8302 | struct die_info *die; | |
8303 | struct dwarf2_cu *cu = reader->cu; | |
8304 | bfd *abfd = reader->abfd; | |
8305 | ||
8306 | offset = info_ptr - reader->buffer; | |
8307 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8308 | info_ptr += bytes_read; | |
8309 | if (!abbrev_number) | |
8310 | { | |
8311 | *diep = NULL; | |
8312 | *has_children = 0; | |
8313 | return info_ptr; | |
8314 | } | |
8315 | ||
8316 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
8317 | if (!abbrev) | |
348e048f DE |
8318 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
8319 | abbrev_number, | |
8320 | bfd_get_filename (abfd)); | |
8321 | ||
93311388 DE |
8322 | die = dwarf_alloc_die (cu, abbrev->num_attrs); |
8323 | die->offset = offset; | |
8324 | die->tag = abbrev->tag; | |
8325 | die->abbrev = abbrev_number; | |
8326 | ||
8327 | die->num_attrs = abbrev->num_attrs; | |
8328 | ||
8329 | for (i = 0; i < abbrev->num_attrs; ++i) | |
8330 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
8331 | abfd, info_ptr, cu); | |
8332 | ||
8333 | *diep = die; | |
8334 | *has_children = abbrev->has_children; | |
8335 | return info_ptr; | |
8336 | } | |
8337 | ||
c906108c SS |
8338 | /* In DWARF version 2, the description of the debugging information is |
8339 | stored in a separate .debug_abbrev section. Before we read any | |
8340 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
8341 | in a hash table. This function also sets flags in CU describing |
8342 | the data found in the abbrev table. */ | |
c906108c SS |
8343 | |
8344 | static void | |
e7c27a73 | 8345 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 8346 | { |
e7c27a73 | 8347 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 8348 | gdb_byte *abbrev_ptr; |
c906108c SS |
8349 | struct abbrev_info *cur_abbrev; |
8350 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
8351 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
8352 | struct attr_abbrev *cur_attrs; |
8353 | unsigned int allocated_attrs; | |
c906108c | 8354 | |
57349743 | 8355 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
8356 | obstack_init (&cu->abbrev_obstack); |
8357 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
8358 | (ABBREV_HASH_SIZE | |
8359 | * sizeof (struct abbrev_info *))); | |
8360 | memset (cu->dwarf2_abbrevs, 0, | |
8361 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 8362 | |
be391dca TT |
8363 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
8364 | &dwarf2_per_objfile->abbrev); | |
dce234bc | 8365 | abbrev_ptr = dwarf2_per_objfile->abbrev.buffer + cu_header->abbrev_offset; |
c906108c SS |
8366 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
8367 | abbrev_ptr += bytes_read; | |
8368 | ||
f3dd6933 DJ |
8369 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8370 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 8371 | |
c906108c SS |
8372 | /* loop until we reach an abbrev number of 0 */ |
8373 | while (abbrev_number) | |
8374 | { | |
f3dd6933 | 8375 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
8376 | |
8377 | /* read in abbrev header */ | |
8378 | cur_abbrev->number = abbrev_number; | |
8379 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8380 | abbrev_ptr += bytes_read; | |
8381 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
8382 | abbrev_ptr += 1; | |
8383 | ||
72bf9492 DJ |
8384 | if (cur_abbrev->tag == DW_TAG_namespace) |
8385 | cu->has_namespace_info = 1; | |
8386 | ||
c906108c SS |
8387 | /* now read in declarations */ |
8388 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8389 | abbrev_ptr += bytes_read; | |
8390 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8391 | abbrev_ptr += bytes_read; | |
8392 | while (abbrev_name) | |
8393 | { | |
f3dd6933 | 8394 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 8395 | { |
f3dd6933 DJ |
8396 | allocated_attrs += ATTR_ALLOC_CHUNK; |
8397 | cur_attrs | |
8398 | = xrealloc (cur_attrs, (allocated_attrs | |
8399 | * sizeof (struct attr_abbrev))); | |
c906108c | 8400 | } |
ae038cb0 DJ |
8401 | |
8402 | /* Record whether this compilation unit might have | |
8403 | inter-compilation-unit references. If we don't know what form | |
8404 | this attribute will have, then it might potentially be a | |
8405 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
8406 | references. */ | |
8407 | ||
8408 | if (abbrev_form == DW_FORM_ref_addr | |
8409 | || abbrev_form == DW_FORM_indirect) | |
8410 | cu->has_form_ref_addr = 1; | |
8411 | ||
f3dd6933 DJ |
8412 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
8413 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
8414 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
8415 | abbrev_ptr += bytes_read; | |
8416 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8417 | abbrev_ptr += bytes_read; | |
8418 | } | |
8419 | ||
f3dd6933 DJ |
8420 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
8421 | (cur_abbrev->num_attrs | |
8422 | * sizeof (struct attr_abbrev))); | |
8423 | memcpy (cur_abbrev->attrs, cur_attrs, | |
8424 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
8425 | ||
c906108c | 8426 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
8427 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
8428 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
8429 | |
8430 | /* Get next abbreviation. | |
8431 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
8432 | always properly terminated with an abbrev number of 0. |
8433 | Exit loop if we encounter an abbreviation which we have | |
8434 | already read (which means we are about to read the abbreviations | |
8435 | for the next compile unit) or if the end of the abbreviation | |
8436 | table is reached. */ | |
dce234bc PP |
8437 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev.buffer) |
8438 | >= dwarf2_per_objfile->abbrev.size) | |
c906108c SS |
8439 | break; |
8440 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8441 | abbrev_ptr += bytes_read; | |
e7c27a73 | 8442 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
8443 | break; |
8444 | } | |
f3dd6933 DJ |
8445 | |
8446 | xfree (cur_attrs); | |
c906108c SS |
8447 | } |
8448 | ||
f3dd6933 | 8449 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 8450 | |
c906108c | 8451 | static void |
f3dd6933 | 8452 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 8453 | { |
f3dd6933 | 8454 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 8455 | |
f3dd6933 DJ |
8456 | obstack_free (&cu->abbrev_obstack, NULL); |
8457 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
8458 | } |
8459 | ||
8460 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
8461 | ||
8462 | static struct abbrev_info * | |
e7c27a73 | 8463 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
8464 | { |
8465 | unsigned int hash_number; | |
8466 | struct abbrev_info *abbrev; | |
8467 | ||
8468 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 8469 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
8470 | |
8471 | while (abbrev) | |
8472 | { | |
8473 | if (abbrev->number == number) | |
8474 | return abbrev; | |
8475 | else | |
8476 | abbrev = abbrev->next; | |
8477 | } | |
8478 | return NULL; | |
8479 | } | |
8480 | ||
72bf9492 DJ |
8481 | /* Returns nonzero if TAG represents a type that we might generate a partial |
8482 | symbol for. */ | |
8483 | ||
8484 | static int | |
8485 | is_type_tag_for_partial (int tag) | |
8486 | { | |
8487 | switch (tag) | |
8488 | { | |
8489 | #if 0 | |
8490 | /* Some types that would be reasonable to generate partial symbols for, | |
8491 | that we don't at present. */ | |
8492 | case DW_TAG_array_type: | |
8493 | case DW_TAG_file_type: | |
8494 | case DW_TAG_ptr_to_member_type: | |
8495 | case DW_TAG_set_type: | |
8496 | case DW_TAG_string_type: | |
8497 | case DW_TAG_subroutine_type: | |
8498 | #endif | |
8499 | case DW_TAG_base_type: | |
8500 | case DW_TAG_class_type: | |
680b30c7 | 8501 | case DW_TAG_interface_type: |
72bf9492 DJ |
8502 | case DW_TAG_enumeration_type: |
8503 | case DW_TAG_structure_type: | |
8504 | case DW_TAG_subrange_type: | |
8505 | case DW_TAG_typedef: | |
8506 | case DW_TAG_union_type: | |
8507 | return 1; | |
8508 | default: | |
8509 | return 0; | |
8510 | } | |
8511 | } | |
8512 | ||
8513 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
8514 | ||
8515 | static struct partial_die_info * | |
93311388 DE |
8516 | load_partial_dies (bfd *abfd, gdb_byte *buffer, gdb_byte *info_ptr, |
8517 | int building_psymtab, struct dwarf2_cu *cu) | |
72bf9492 DJ |
8518 | { |
8519 | struct partial_die_info *part_die; | |
8520 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
8521 | struct abbrev_info *abbrev; | |
8522 | unsigned int bytes_read; | |
5afb4e99 | 8523 | unsigned int load_all = 0; |
72bf9492 DJ |
8524 | |
8525 | int nesting_level = 1; | |
8526 | ||
8527 | parent_die = NULL; | |
8528 | last_die = NULL; | |
8529 | ||
5afb4e99 DJ |
8530 | if (cu->per_cu && cu->per_cu->load_all_dies) |
8531 | load_all = 1; | |
8532 | ||
72bf9492 DJ |
8533 | cu->partial_dies |
8534 | = htab_create_alloc_ex (cu->header.length / 12, | |
8535 | partial_die_hash, | |
8536 | partial_die_eq, | |
8537 | NULL, | |
8538 | &cu->comp_unit_obstack, | |
8539 | hashtab_obstack_allocate, | |
8540 | dummy_obstack_deallocate); | |
8541 | ||
8542 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
8543 | sizeof (struct partial_die_info)); | |
8544 | ||
8545 | while (1) | |
8546 | { | |
8547 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
8548 | ||
8549 | /* A NULL abbrev means the end of a series of children. */ | |
8550 | if (abbrev == NULL) | |
8551 | { | |
8552 | if (--nesting_level == 0) | |
8553 | { | |
8554 | /* PART_DIE was probably the last thing allocated on the | |
8555 | comp_unit_obstack, so we could call obstack_free | |
8556 | here. We don't do that because the waste is small, | |
8557 | and will be cleaned up when we're done with this | |
8558 | compilation unit. This way, we're also more robust | |
8559 | against other users of the comp_unit_obstack. */ | |
8560 | return first_die; | |
8561 | } | |
8562 | info_ptr += bytes_read; | |
8563 | last_die = parent_die; | |
8564 | parent_die = parent_die->die_parent; | |
8565 | continue; | |
8566 | } | |
8567 | ||
98bfdba5 PA |
8568 | /* Check for template arguments. We never save these; if |
8569 | they're seen, we just mark the parent, and go on our way. */ | |
8570 | if (parent_die != NULL | |
8571 | && cu->language == language_cplus | |
8572 | && (abbrev->tag == DW_TAG_template_type_param | |
8573 | || abbrev->tag == DW_TAG_template_value_param)) | |
8574 | { | |
8575 | parent_die->has_template_arguments = 1; | |
8576 | ||
8577 | if (!load_all) | |
8578 | { | |
8579 | /* We don't need a partial DIE for the template argument. */ | |
8580 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, | |
8581 | cu); | |
8582 | continue; | |
8583 | } | |
8584 | } | |
8585 | ||
8586 | /* We only recurse into subprograms looking for template arguments. | |
8587 | Skip their other children. */ | |
8588 | if (!load_all | |
8589 | && cu->language == language_cplus | |
8590 | && parent_die != NULL | |
8591 | && parent_die->tag == DW_TAG_subprogram) | |
8592 | { | |
8593 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); | |
8594 | continue; | |
8595 | } | |
8596 | ||
5afb4e99 DJ |
8597 | /* Check whether this DIE is interesting enough to save. Normally |
8598 | we would not be interested in members here, but there may be | |
8599 | later variables referencing them via DW_AT_specification (for | |
8600 | static members). */ | |
8601 | if (!load_all | |
8602 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 8603 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
8604 | && abbrev->tag != DW_TAG_enumerator |
8605 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 8606 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 8607 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 8608 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 8609 | && abbrev->tag != DW_TAG_module |
5afb4e99 | 8610 | && abbrev->tag != DW_TAG_member) |
72bf9492 DJ |
8611 | { |
8612 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 8613 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
72bf9492 DJ |
8614 | continue; |
8615 | } | |
8616 | ||
93311388 DE |
8617 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, abfd, |
8618 | buffer, info_ptr, cu); | |
72bf9492 DJ |
8619 | |
8620 | /* This two-pass algorithm for processing partial symbols has a | |
8621 | high cost in cache pressure. Thus, handle some simple cases | |
8622 | here which cover the majority of C partial symbols. DIEs | |
8623 | which neither have specification tags in them, nor could have | |
8624 | specification tags elsewhere pointing at them, can simply be | |
8625 | processed and discarded. | |
8626 | ||
8627 | This segment is also optional; scan_partial_symbols and | |
8628 | add_partial_symbol will handle these DIEs if we chain | |
8629 | them in normally. When compilers which do not emit large | |
8630 | quantities of duplicate debug information are more common, | |
8631 | this code can probably be removed. */ | |
8632 | ||
8633 | /* Any complete simple types at the top level (pretty much all | |
8634 | of them, for a language without namespaces), can be processed | |
8635 | directly. */ | |
8636 | if (parent_die == NULL | |
8637 | && part_die->has_specification == 0 | |
8638 | && part_die->is_declaration == 0 | |
8639 | && (part_die->tag == DW_TAG_typedef | |
8640 | || part_die->tag == DW_TAG_base_type | |
8641 | || part_die->tag == DW_TAG_subrange_type)) | |
8642 | { | |
8643 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 8644 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 DJ |
8645 | VAR_DOMAIN, LOC_TYPEDEF, |
8646 | &cu->objfile->static_psymbols, | |
8647 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
93311388 | 8648 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
8649 | continue; |
8650 | } | |
8651 | ||
8652 | /* If we're at the second level, and we're an enumerator, and | |
8653 | our parent has no specification (meaning possibly lives in a | |
8654 | namespace elsewhere), then we can add the partial symbol now | |
8655 | instead of queueing it. */ | |
8656 | if (part_die->tag == DW_TAG_enumerator | |
8657 | && parent_die != NULL | |
8658 | && parent_die->die_parent == NULL | |
8659 | && parent_die->tag == DW_TAG_enumeration_type | |
8660 | && parent_die->has_specification == 0) | |
8661 | { | |
8662 | if (part_die->name == NULL) | |
e2e0b3e5 | 8663 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
72bf9492 | 8664 | else if (building_psymtab) |
04a679b8 | 8665 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 8666 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
8667 | (cu->language == language_cplus |
8668 | || cu->language == language_java) | |
72bf9492 DJ |
8669 | ? &cu->objfile->global_psymbols |
8670 | : &cu->objfile->static_psymbols, | |
8671 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
8672 | ||
93311388 | 8673 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
8674 | continue; |
8675 | } | |
8676 | ||
8677 | /* We'll save this DIE so link it in. */ | |
8678 | part_die->die_parent = parent_die; | |
8679 | part_die->die_sibling = NULL; | |
8680 | part_die->die_child = NULL; | |
8681 | ||
8682 | if (last_die && last_die == parent_die) | |
8683 | last_die->die_child = part_die; | |
8684 | else if (last_die) | |
8685 | last_die->die_sibling = part_die; | |
8686 | ||
8687 | last_die = part_die; | |
8688 | ||
8689 | if (first_die == NULL) | |
8690 | first_die = part_die; | |
8691 | ||
8692 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
8693 | find interesting need to be in the hash table, because we | |
8694 | also have the parent/sibling/child chains; only those that we | |
8695 | might refer to by offset later during partial symbol reading. | |
8696 | ||
8697 | For now this means things that might have be the target of a | |
8698 | DW_AT_specification, DW_AT_abstract_origin, or | |
8699 | DW_AT_extension. DW_AT_extension will refer only to | |
8700 | namespaces; DW_AT_abstract_origin refers to functions (and | |
8701 | many things under the function DIE, but we do not recurse | |
8702 | into function DIEs during partial symbol reading) and | |
8703 | possibly variables as well; DW_AT_specification refers to | |
8704 | declarations. Declarations ought to have the DW_AT_declaration | |
8705 | flag. It happens that GCC forgets to put it in sometimes, but | |
8706 | only for functions, not for types. | |
8707 | ||
8708 | Adding more things than necessary to the hash table is harmless | |
8709 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
8710 | wasted time in find_partial_die, when we reread the compilation |
8711 | unit with load_all_dies set. */ | |
72bf9492 | 8712 | |
5afb4e99 | 8713 | if (load_all |
72929c62 | 8714 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 8715 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
8716 | || abbrev->tag == DW_TAG_variable |
8717 | || abbrev->tag == DW_TAG_namespace | |
8718 | || part_die->is_declaration) | |
8719 | { | |
8720 | void **slot; | |
8721 | ||
8722 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
8723 | part_die->offset, INSERT); | |
8724 | *slot = part_die; | |
8725 | } | |
8726 | ||
8727 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
8728 | sizeof (struct partial_die_info)); | |
8729 | ||
8730 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 8731 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
8732 | languages we have to, so that we can get at method physnames |
8733 | to infer fully qualified class names, for DW_AT_specification, | |
8734 | and for C++ template arguments. For C++, we also look one level | |
8735 | inside functions to find template arguments (if the name of the | |
8736 | function does not already contain the template arguments). | |
bc30ff58 JB |
8737 | |
8738 | For Ada, we need to scan the children of subprograms and lexical | |
8739 | blocks as well because Ada allows the definition of nested | |
8740 | entities that could be interesting for the debugger, such as | |
8741 | nested subprograms for instance. */ | |
72bf9492 | 8742 | if (last_die->has_children |
5afb4e99 DJ |
8743 | && (load_all |
8744 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 8745 | || last_die->tag == DW_TAG_module |
72bf9492 | 8746 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
8747 | || (cu->language == language_cplus |
8748 | && last_die->tag == DW_TAG_subprogram | |
8749 | && (last_die->name == NULL | |
8750 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
8751 | || (cu->language != language_c |
8752 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 8753 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 8754 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
8755 | || last_die->tag == DW_TAG_union_type)) |
8756 | || (cu->language == language_ada | |
8757 | && (last_die->tag == DW_TAG_subprogram | |
8758 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
8759 | { |
8760 | nesting_level++; | |
8761 | parent_die = last_die; | |
8762 | continue; | |
8763 | } | |
8764 | ||
8765 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 8766 | info_ptr = locate_pdi_sibling (last_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
8767 | |
8768 | /* Back to the top, do it again. */ | |
8769 | } | |
8770 | } | |
8771 | ||
c906108c SS |
8772 | /* Read a minimal amount of information into the minimal die structure. */ |
8773 | ||
fe1b8b76 | 8774 | static gdb_byte * |
72bf9492 DJ |
8775 | read_partial_die (struct partial_die_info *part_die, |
8776 | struct abbrev_info *abbrev, | |
8777 | unsigned int abbrev_len, bfd *abfd, | |
93311388 DE |
8778 | gdb_byte *buffer, gdb_byte *info_ptr, |
8779 | struct dwarf2_cu *cu) | |
c906108c | 8780 | { |
fa238c03 | 8781 | unsigned int i; |
c906108c | 8782 | struct attribute attr; |
c5aa993b | 8783 | int has_low_pc_attr = 0; |
c906108c SS |
8784 | int has_high_pc_attr = 0; |
8785 | ||
72bf9492 | 8786 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 8787 | |
93311388 | 8788 | part_die->offset = info_ptr - buffer; |
72bf9492 DJ |
8789 | |
8790 | info_ptr += abbrev_len; | |
8791 | ||
8792 | if (abbrev == NULL) | |
8793 | return info_ptr; | |
8794 | ||
c906108c SS |
8795 | part_die->tag = abbrev->tag; |
8796 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
8797 | |
8798 | for (i = 0; i < abbrev->num_attrs; ++i) | |
8799 | { | |
e7c27a73 | 8800 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
8801 | |
8802 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 8803 | partial symbol table. */ |
c906108c SS |
8804 | switch (attr.name) |
8805 | { | |
8806 | case DW_AT_name: | |
71c25dea TT |
8807 | switch (part_die->tag) |
8808 | { | |
8809 | case DW_TAG_compile_unit: | |
348e048f | 8810 | case DW_TAG_type_unit: |
71c25dea TT |
8811 | /* Compilation units have a DW_AT_name that is a filename, not |
8812 | a source language identifier. */ | |
8813 | case DW_TAG_enumeration_type: | |
8814 | case DW_TAG_enumerator: | |
8815 | /* These tags always have simple identifiers already; no need | |
8816 | to canonicalize them. */ | |
8817 | part_die->name = DW_STRING (&attr); | |
8818 | break; | |
8819 | default: | |
8820 | part_die->name | |
8821 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
95519e0e | 8822 | &cu->objfile->objfile_obstack); |
71c25dea TT |
8823 | break; |
8824 | } | |
c906108c | 8825 | break; |
31ef98ae | 8826 | case DW_AT_linkage_name: |
c906108c | 8827 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
8828 | /* Note that both forms of linkage name might appear. We |
8829 | assume they will be the same, and we only store the last | |
8830 | one we see. */ | |
94af9270 KS |
8831 | if (cu->language == language_ada) |
8832 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 8833 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
8834 | break; |
8835 | case DW_AT_low_pc: | |
8836 | has_low_pc_attr = 1; | |
8837 | part_die->lowpc = DW_ADDR (&attr); | |
8838 | break; | |
8839 | case DW_AT_high_pc: | |
8840 | has_high_pc_attr = 1; | |
8841 | part_die->highpc = DW_ADDR (&attr); | |
8842 | break; | |
8843 | case DW_AT_location: | |
8e19ed76 PS |
8844 | /* Support the .debug_loc offsets */ |
8845 | if (attr_form_is_block (&attr)) | |
8846 | { | |
8847 | part_die->locdesc = DW_BLOCK (&attr); | |
8848 | } | |
3690dd37 | 8849 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 8850 | { |
4d3c2250 | 8851 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
8852 | } |
8853 | else | |
8854 | { | |
4d3c2250 KB |
8855 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
8856 | "partial symbol information"); | |
8e19ed76 | 8857 | } |
c906108c | 8858 | break; |
c906108c SS |
8859 | case DW_AT_external: |
8860 | part_die->is_external = DW_UNSND (&attr); | |
8861 | break; | |
8862 | case DW_AT_declaration: | |
8863 | part_die->is_declaration = DW_UNSND (&attr); | |
8864 | break; | |
8865 | case DW_AT_type: | |
8866 | part_die->has_type = 1; | |
8867 | break; | |
8868 | case DW_AT_abstract_origin: | |
8869 | case DW_AT_specification: | |
72bf9492 DJ |
8870 | case DW_AT_extension: |
8871 | part_die->has_specification = 1; | |
c764a876 | 8872 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
c906108c SS |
8873 | break; |
8874 | case DW_AT_sibling: | |
8875 | /* Ignore absolute siblings, they might point outside of | |
8876 | the current compile unit. */ | |
8877 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 8878 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
c906108c | 8879 | else |
93311388 | 8880 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr); |
c906108c | 8881 | break; |
fa4028e9 JB |
8882 | case DW_AT_byte_size: |
8883 | part_die->has_byte_size = 1; | |
8884 | break; | |
68511cec CES |
8885 | case DW_AT_calling_convention: |
8886 | /* DWARF doesn't provide a way to identify a program's source-level | |
8887 | entry point. DW_AT_calling_convention attributes are only meant | |
8888 | to describe functions' calling conventions. | |
8889 | ||
8890 | However, because it's a necessary piece of information in | |
8891 | Fortran, and because DW_CC_program is the only piece of debugging | |
8892 | information whose definition refers to a 'main program' at all, | |
8893 | several compilers have begun marking Fortran main programs with | |
8894 | DW_CC_program --- even when those functions use the standard | |
8895 | calling conventions. | |
8896 | ||
8897 | So until DWARF specifies a way to provide this information and | |
8898 | compilers pick up the new representation, we'll support this | |
8899 | practice. */ | |
8900 | if (DW_UNSND (&attr) == DW_CC_program | |
8901 | && cu->language == language_fortran) | |
01f8c46d JK |
8902 | { |
8903 | set_main_name (part_die->name); | |
8904 | ||
8905 | /* As this DIE has a static linkage the name would be difficult | |
8906 | to look up later. */ | |
8907 | language_of_main = language_fortran; | |
8908 | } | |
68511cec | 8909 | break; |
c906108c SS |
8910 | default: |
8911 | break; | |
8912 | } | |
8913 | } | |
8914 | ||
c906108c SS |
8915 | /* When using the GNU linker, .gnu.linkonce. sections are used to |
8916 | eliminate duplicate copies of functions and vtables and such. | |
8917 | The linker will arbitrarily choose one and discard the others. | |
8918 | The AT_*_pc values for such functions refer to local labels in | |
8919 | these sections. If the section from that file was discarded, the | |
8920 | labels are not in the output, so the relocs get a value of 0. | |
8921 | If this is a discarded function, mark the pc bounds as invalid, | |
8922 | so that GDB will ignore it. */ | |
8923 | if (has_low_pc_attr && has_high_pc_attr | |
8924 | && part_die->lowpc < part_die->highpc | |
8925 | && (part_die->lowpc != 0 | |
72dca2f5 | 8926 | || dwarf2_per_objfile->has_section_at_zero)) |
0b010bcc | 8927 | part_die->has_pc_info = 1; |
85cbf3d3 | 8928 | |
c906108c SS |
8929 | return info_ptr; |
8930 | } | |
8931 | ||
72bf9492 DJ |
8932 | /* Find a cached partial DIE at OFFSET in CU. */ |
8933 | ||
8934 | static struct partial_die_info * | |
c764a876 | 8935 | find_partial_die_in_comp_unit (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
8936 | { |
8937 | struct partial_die_info *lookup_die = NULL; | |
8938 | struct partial_die_info part_die; | |
8939 | ||
8940 | part_die.offset = offset; | |
8941 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
8942 | ||
72bf9492 DJ |
8943 | return lookup_die; |
8944 | } | |
8945 | ||
348e048f DE |
8946 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
8947 | except in the case of .debug_types DIEs which do not reference | |
8948 | outside their CU (they do however referencing other types via | |
8949 | DW_FORM_sig8). */ | |
72bf9492 DJ |
8950 | |
8951 | static struct partial_die_info * | |
c764a876 | 8952 | find_partial_die (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 | 8953 | { |
5afb4e99 DJ |
8954 | struct dwarf2_per_cu_data *per_cu = NULL; |
8955 | struct partial_die_info *pd = NULL; | |
72bf9492 | 8956 | |
348e048f DE |
8957 | if (cu->per_cu->from_debug_types) |
8958 | { | |
8959 | pd = find_partial_die_in_comp_unit (offset, cu); | |
8960 | if (pd != NULL) | |
8961 | return pd; | |
8962 | goto not_found; | |
8963 | } | |
8964 | ||
45452591 | 8965 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
8966 | { |
8967 | pd = find_partial_die_in_comp_unit (offset, cu); | |
8968 | if (pd != NULL) | |
8969 | return pd; | |
8970 | } | |
72bf9492 | 8971 | |
ae038cb0 DJ |
8972 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
8973 | ||
98bfdba5 PA |
8974 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
8975 | load_partial_comp_unit (per_cu, cu->objfile); | |
ae038cb0 DJ |
8976 | |
8977 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
8978 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
8979 | ||
8980 | if (pd == NULL && per_cu->load_all_dies == 0) | |
8981 | { | |
8982 | struct cleanup *back_to; | |
8983 | struct partial_die_info comp_unit_die; | |
8984 | struct abbrev_info *abbrev; | |
8985 | unsigned int bytes_read; | |
8986 | char *info_ptr; | |
8987 | ||
8988 | per_cu->load_all_dies = 1; | |
8989 | ||
8990 | /* Re-read the DIEs. */ | |
8991 | back_to = make_cleanup (null_cleanup, 0); | |
8992 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
8993 | { | |
8994 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
53d72f98 | 8995 | make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); |
5afb4e99 | 8996 | } |
dce234bc | 8997 | info_ptr = (dwarf2_per_objfile->info.buffer |
d00adf39 DE |
8998 | + per_cu->cu->header.offset |
8999 | + per_cu->cu->header.first_die_offset); | |
5afb4e99 DJ |
9000 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); |
9001 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
93311388 DE |
9002 | per_cu->cu->objfile->obfd, |
9003 | dwarf2_per_objfile->info.buffer, info_ptr, | |
5afb4e99 DJ |
9004 | per_cu->cu); |
9005 | if (comp_unit_die.has_children) | |
93311388 DE |
9006 | load_partial_dies (per_cu->cu->objfile->obfd, |
9007 | dwarf2_per_objfile->info.buffer, info_ptr, | |
9008 | 0, per_cu->cu); | |
5afb4e99 DJ |
9009 | do_cleanups (back_to); |
9010 | ||
9011 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
9012 | } | |
9013 | ||
348e048f DE |
9014 | not_found: |
9015 | ||
5afb4e99 DJ |
9016 | if (pd == NULL) |
9017 | internal_error (__FILE__, __LINE__, | |
c764a876 | 9018 | _("could not find partial DIE 0x%x in cache [from module %s]\n"), |
5afb4e99 DJ |
9019 | offset, bfd_get_filename (cu->objfile->obfd)); |
9020 | return pd; | |
72bf9492 DJ |
9021 | } |
9022 | ||
abc72ce4 DE |
9023 | /* See if we can figure out if the class lives in a namespace. We do |
9024 | this by looking for a member function; its demangled name will | |
9025 | contain namespace info, if there is any. */ | |
9026 | ||
9027 | static void | |
9028 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
9029 | struct dwarf2_cu *cu) | |
9030 | { | |
9031 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
9032 | what template types look like, because the demangler | |
9033 | frequently doesn't give the same name as the debug info. We | |
9034 | could fix this by only using the demangled name to get the | |
9035 | prefix (but see comment in read_structure_type). */ | |
9036 | ||
9037 | struct partial_die_info *real_pdi; | |
9038 | struct partial_die_info *child_pdi; | |
9039 | ||
9040 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
9041 | we should not do this. We'll prepend the parent's fully qualified | |
9042 | name when we create the partial symbol. */ | |
9043 | ||
9044 | real_pdi = struct_pdi; | |
9045 | while (real_pdi->has_specification) | |
9046 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); | |
9047 | ||
9048 | if (real_pdi->die_parent != NULL) | |
9049 | return; | |
9050 | ||
9051 | for (child_pdi = struct_pdi->die_child; | |
9052 | child_pdi != NULL; | |
9053 | child_pdi = child_pdi->die_sibling) | |
9054 | { | |
9055 | if (child_pdi->tag == DW_TAG_subprogram | |
9056 | && child_pdi->linkage_name != NULL) | |
9057 | { | |
9058 | char *actual_class_name | |
9059 | = language_class_name_from_physname (cu->language_defn, | |
9060 | child_pdi->linkage_name); | |
9061 | if (actual_class_name != NULL) | |
9062 | { | |
9063 | struct_pdi->name | |
9064 | = obsavestring (actual_class_name, | |
9065 | strlen (actual_class_name), | |
9066 | &cu->objfile->objfile_obstack); | |
9067 | xfree (actual_class_name); | |
9068 | } | |
9069 | break; | |
9070 | } | |
9071 | } | |
9072 | } | |
9073 | ||
72bf9492 DJ |
9074 | /* Adjust PART_DIE before generating a symbol for it. This function |
9075 | may set the is_external flag or change the DIE's name. */ | |
9076 | ||
9077 | static void | |
9078 | fixup_partial_die (struct partial_die_info *part_die, | |
9079 | struct dwarf2_cu *cu) | |
9080 | { | |
abc72ce4 DE |
9081 | /* Once we've fixed up a die, there's no point in doing so again. |
9082 | This also avoids a memory leak if we were to call | |
9083 | guess_partial_die_structure_name multiple times. */ | |
9084 | if (part_die->fixup_called) | |
9085 | return; | |
9086 | ||
72bf9492 DJ |
9087 | /* If we found a reference attribute and the DIE has no name, try |
9088 | to find a name in the referred to DIE. */ | |
9089 | ||
9090 | if (part_die->name == NULL && part_die->has_specification) | |
9091 | { | |
9092 | struct partial_die_info *spec_die; | |
72bf9492 | 9093 | |
10b3939b | 9094 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 9095 | |
10b3939b | 9096 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
9097 | |
9098 | if (spec_die->name) | |
9099 | { | |
9100 | part_die->name = spec_die->name; | |
9101 | ||
9102 | /* Copy DW_AT_external attribute if it is set. */ | |
9103 | if (spec_die->is_external) | |
9104 | part_die->is_external = spec_die->is_external; | |
9105 | } | |
9106 | } | |
9107 | ||
9108 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
9109 | |
9110 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
9111 | part_die->name = "(anonymous namespace)"; | |
9112 | ||
abc72ce4 DE |
9113 | /* If there is no parent die to provide a namespace, and there are |
9114 | children, see if we can determine the namespace from their linkage | |
9115 | name. | |
9116 | NOTE: We need to do this even if cu->has_namespace_info != 0. | |
9117 | gcc-4.5 -gdwarf-4 can drop the enclosing namespace. */ | |
9118 | if (cu->language == language_cplus | |
9119 | && dwarf2_per_objfile->types.asection != NULL | |
9120 | && part_die->die_parent == NULL | |
9121 | && part_die->has_children | |
9122 | && (part_die->tag == DW_TAG_class_type | |
9123 | || part_die->tag == DW_TAG_structure_type | |
9124 | || part_die->tag == DW_TAG_union_type)) | |
9125 | guess_partial_die_structure_name (part_die, cu); | |
9126 | ||
9127 | part_die->fixup_called = 1; | |
72bf9492 DJ |
9128 | } |
9129 | ||
a8329558 | 9130 | /* Read an attribute value described by an attribute form. */ |
c906108c | 9131 | |
fe1b8b76 | 9132 | static gdb_byte * |
a8329558 | 9133 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 9134 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 9135 | struct dwarf2_cu *cu) |
c906108c | 9136 | { |
e7c27a73 | 9137 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
9138 | unsigned int bytes_read; |
9139 | struct dwarf_block *blk; | |
9140 | ||
a8329558 KW |
9141 | attr->form = form; |
9142 | switch (form) | |
c906108c | 9143 | { |
c906108c | 9144 | case DW_FORM_ref_addr: |
ae411497 TT |
9145 | if (cu->header.version == 2) |
9146 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); | |
9147 | else | |
9148 | DW_ADDR (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
9149 | info_ptr += bytes_read; | |
9150 | break; | |
9151 | case DW_FORM_addr: | |
e7c27a73 | 9152 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 9153 | info_ptr += bytes_read; |
c906108c SS |
9154 | break; |
9155 | case DW_FORM_block2: | |
7b5a2f43 | 9156 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9157 | blk->size = read_2_bytes (abfd, info_ptr); |
9158 | info_ptr += 2; | |
9159 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9160 | info_ptr += blk->size; | |
9161 | DW_BLOCK (attr) = blk; | |
9162 | break; | |
9163 | case DW_FORM_block4: | |
7b5a2f43 | 9164 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9165 | blk->size = read_4_bytes (abfd, info_ptr); |
9166 | info_ptr += 4; | |
9167 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9168 | info_ptr += blk->size; | |
9169 | DW_BLOCK (attr) = blk; | |
9170 | break; | |
9171 | case DW_FORM_data2: | |
9172 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
9173 | info_ptr += 2; | |
9174 | break; | |
9175 | case DW_FORM_data4: | |
9176 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
9177 | info_ptr += 4; | |
9178 | break; | |
9179 | case DW_FORM_data8: | |
9180 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
9181 | info_ptr += 8; | |
9182 | break; | |
2dc7f7b3 TT |
9183 | case DW_FORM_sec_offset: |
9184 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
9185 | info_ptr += bytes_read; | |
9186 | break; | |
c906108c | 9187 | case DW_FORM_string: |
9b1c24c8 | 9188 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 9189 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
9190 | info_ptr += bytes_read; |
9191 | break; | |
4bdf3d34 JJ |
9192 | case DW_FORM_strp: |
9193 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
9194 | &bytes_read); | |
8285870a | 9195 | DW_STRING_IS_CANONICAL (attr) = 0; |
4bdf3d34 JJ |
9196 | info_ptr += bytes_read; |
9197 | break; | |
2dc7f7b3 | 9198 | case DW_FORM_exprloc: |
c906108c | 9199 | case DW_FORM_block: |
7b5a2f43 | 9200 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9201 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
9202 | info_ptr += bytes_read; | |
9203 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9204 | info_ptr += blk->size; | |
9205 | DW_BLOCK (attr) = blk; | |
9206 | break; | |
9207 | case DW_FORM_block1: | |
7b5a2f43 | 9208 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9209 | blk->size = read_1_byte (abfd, info_ptr); |
9210 | info_ptr += 1; | |
9211 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9212 | info_ptr += blk->size; | |
9213 | DW_BLOCK (attr) = blk; | |
9214 | break; | |
9215 | case DW_FORM_data1: | |
9216 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
9217 | info_ptr += 1; | |
9218 | break; | |
9219 | case DW_FORM_flag: | |
9220 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
9221 | info_ptr += 1; | |
9222 | break; | |
2dc7f7b3 TT |
9223 | case DW_FORM_flag_present: |
9224 | DW_UNSND (attr) = 1; | |
9225 | break; | |
c906108c SS |
9226 | case DW_FORM_sdata: |
9227 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
9228 | info_ptr += bytes_read; | |
9229 | break; | |
9230 | case DW_FORM_udata: | |
9231 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9232 | info_ptr += bytes_read; | |
9233 | break; | |
9234 | case DW_FORM_ref1: | |
10b3939b | 9235 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
9236 | info_ptr += 1; |
9237 | break; | |
9238 | case DW_FORM_ref2: | |
10b3939b | 9239 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
9240 | info_ptr += 2; |
9241 | break; | |
9242 | case DW_FORM_ref4: | |
10b3939b | 9243 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
9244 | info_ptr += 4; |
9245 | break; | |
613e1657 | 9246 | case DW_FORM_ref8: |
10b3939b | 9247 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
9248 | info_ptr += 8; |
9249 | break; | |
348e048f DE |
9250 | case DW_FORM_sig8: |
9251 | /* Convert the signature to something we can record in DW_UNSND | |
9252 | for later lookup. | |
9253 | NOTE: This is NULL if the type wasn't found. */ | |
9254 | DW_SIGNATURED_TYPE (attr) = | |
9255 | lookup_signatured_type (cu->objfile, read_8_bytes (abfd, info_ptr)); | |
9256 | info_ptr += 8; | |
9257 | break; | |
c906108c | 9258 | case DW_FORM_ref_udata: |
10b3939b DJ |
9259 | DW_ADDR (attr) = (cu->header.offset |
9260 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
9261 | info_ptr += bytes_read; |
9262 | break; | |
c906108c | 9263 | case DW_FORM_indirect: |
a8329558 KW |
9264 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
9265 | info_ptr += bytes_read; | |
e7c27a73 | 9266 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 9267 | break; |
c906108c | 9268 | default: |
8a3fe4f8 | 9269 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
9270 | dwarf_form_name (form), |
9271 | bfd_get_filename (abfd)); | |
c906108c | 9272 | } |
28e94949 JB |
9273 | |
9274 | /* We have seen instances where the compiler tried to emit a byte | |
9275 | size attribute of -1 which ended up being encoded as an unsigned | |
9276 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
9277 | an object of this size seems pretty unlikely so we can relatively | |
9278 | safely treat these cases as if the size attribute was invalid and | |
9279 | treat them as zero by default. */ | |
9280 | if (attr->name == DW_AT_byte_size | |
9281 | && form == DW_FORM_data4 | |
9282 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
9283 | { |
9284 | complaint | |
9285 | (&symfile_complaints, | |
43bbcdc2 PH |
9286 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
9287 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
9288 | DW_UNSND (attr) = 0; |
9289 | } | |
28e94949 | 9290 | |
c906108c SS |
9291 | return info_ptr; |
9292 | } | |
9293 | ||
a8329558 KW |
9294 | /* Read an attribute described by an abbreviated attribute. */ |
9295 | ||
fe1b8b76 | 9296 | static gdb_byte * |
a8329558 | 9297 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 9298 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
9299 | { |
9300 | attr->name = abbrev->name; | |
e7c27a73 | 9301 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
9302 | } |
9303 | ||
c906108c SS |
9304 | /* read dwarf information from a buffer */ |
9305 | ||
9306 | static unsigned int | |
fe1b8b76 | 9307 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 9308 | { |
fe1b8b76 | 9309 | return bfd_get_8 (abfd, buf); |
c906108c SS |
9310 | } |
9311 | ||
9312 | static int | |
fe1b8b76 | 9313 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 9314 | { |
fe1b8b76 | 9315 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
9316 | } |
9317 | ||
9318 | static unsigned int | |
fe1b8b76 | 9319 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9320 | { |
fe1b8b76 | 9321 | return bfd_get_16 (abfd, buf); |
c906108c SS |
9322 | } |
9323 | ||
9324 | static int | |
fe1b8b76 | 9325 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9326 | { |
fe1b8b76 | 9327 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
9328 | } |
9329 | ||
9330 | static unsigned int | |
fe1b8b76 | 9331 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9332 | { |
fe1b8b76 | 9333 | return bfd_get_32 (abfd, buf); |
c906108c SS |
9334 | } |
9335 | ||
9336 | static int | |
fe1b8b76 | 9337 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9338 | { |
fe1b8b76 | 9339 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
9340 | } |
9341 | ||
93311388 | 9342 | static ULONGEST |
fe1b8b76 | 9343 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9344 | { |
fe1b8b76 | 9345 | return bfd_get_64 (abfd, buf); |
c906108c SS |
9346 | } |
9347 | ||
9348 | static CORE_ADDR | |
fe1b8b76 | 9349 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 9350 | unsigned int *bytes_read) |
c906108c | 9351 | { |
e7c27a73 | 9352 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
9353 | CORE_ADDR retval = 0; |
9354 | ||
107d2387 | 9355 | if (cu_header->signed_addr_p) |
c906108c | 9356 | { |
107d2387 AC |
9357 | switch (cu_header->addr_size) |
9358 | { | |
9359 | case 2: | |
fe1b8b76 | 9360 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
9361 | break; |
9362 | case 4: | |
fe1b8b76 | 9363 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
9364 | break; |
9365 | case 8: | |
fe1b8b76 | 9366 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
9367 | break; |
9368 | default: | |
8e65ff28 | 9369 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9370 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 9371 | bfd_get_filename (abfd)); |
107d2387 AC |
9372 | } |
9373 | } | |
9374 | else | |
9375 | { | |
9376 | switch (cu_header->addr_size) | |
9377 | { | |
9378 | case 2: | |
fe1b8b76 | 9379 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
9380 | break; |
9381 | case 4: | |
fe1b8b76 | 9382 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
9383 | break; |
9384 | case 8: | |
fe1b8b76 | 9385 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
9386 | break; |
9387 | default: | |
8e65ff28 | 9388 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9389 | _("read_address: bad switch, unsigned [in module %s]"), |
659b0389 | 9390 | bfd_get_filename (abfd)); |
107d2387 | 9391 | } |
c906108c | 9392 | } |
64367e0a | 9393 | |
107d2387 AC |
9394 | *bytes_read = cu_header->addr_size; |
9395 | return retval; | |
c906108c SS |
9396 | } |
9397 | ||
f7ef9339 | 9398 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
9399 | specification allows the initial length to take up either 4 bytes |
9400 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
9401 | bytes describe the length and all offsets will be 8 bytes in length | |
9402 | instead of 4. | |
9403 | ||
f7ef9339 KB |
9404 | An older, non-standard 64-bit format is also handled by this |
9405 | function. The older format in question stores the initial length | |
9406 | as an 8-byte quantity without an escape value. Lengths greater | |
9407 | than 2^32 aren't very common which means that the initial 4 bytes | |
9408 | is almost always zero. Since a length value of zero doesn't make | |
9409 | sense for the 32-bit format, this initial zero can be considered to | |
9410 | be an escape value which indicates the presence of the older 64-bit | |
9411 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
9412 | greater than 4GB. If it becomes necessary to handle lengths |
9413 | somewhat larger than 4GB, we could allow other small values (such | |
9414 | as the non-sensical values of 1, 2, and 3) to also be used as | |
9415 | escape values indicating the presence of the old format. | |
f7ef9339 | 9416 | |
917c78fc MK |
9417 | The value returned via bytes_read should be used to increment the |
9418 | relevant pointer after calling read_initial_length(). | |
c764a876 | 9419 | |
613e1657 KB |
9420 | [ Note: read_initial_length() and read_offset() are based on the |
9421 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 9422 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
9423 | from: |
9424 | ||
f7ef9339 | 9425 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 9426 | |
613e1657 KB |
9427 | This document is only a draft and is subject to change. (So beware.) |
9428 | ||
f7ef9339 | 9429 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
9430 | determined empirically by examining 64-bit ELF files produced by |
9431 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
9432 | |
9433 | - Kevin, July 16, 2002 | |
613e1657 KB |
9434 | ] */ |
9435 | ||
9436 | static LONGEST | |
c764a876 | 9437 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 9438 | { |
fe1b8b76 | 9439 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 9440 | |
dd373385 | 9441 | if (length == 0xffffffff) |
613e1657 | 9442 | { |
fe1b8b76 | 9443 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 9444 | *bytes_read = 12; |
613e1657 | 9445 | } |
dd373385 | 9446 | else if (length == 0) |
f7ef9339 | 9447 | { |
dd373385 | 9448 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 9449 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 9450 | *bytes_read = 8; |
f7ef9339 | 9451 | } |
613e1657 KB |
9452 | else |
9453 | { | |
9454 | *bytes_read = 4; | |
613e1657 KB |
9455 | } |
9456 | ||
c764a876 DE |
9457 | return length; |
9458 | } | |
dd373385 | 9459 | |
c764a876 DE |
9460 | /* Cover function for read_initial_length. |
9461 | Returns the length of the object at BUF, and stores the size of the | |
9462 | initial length in *BYTES_READ and stores the size that offsets will be in | |
9463 | *OFFSET_SIZE. | |
9464 | If the initial length size is not equivalent to that specified in | |
9465 | CU_HEADER then issue a complaint. | |
9466 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 9467 | |
c764a876 DE |
9468 | static LONGEST |
9469 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
9470 | const struct comp_unit_head *cu_header, | |
9471 | unsigned int *bytes_read, | |
9472 | unsigned int *offset_size) | |
9473 | { | |
9474 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
9475 | ||
9476 | gdb_assert (cu_header->initial_length_size == 4 | |
9477 | || cu_header->initial_length_size == 8 | |
9478 | || cu_header->initial_length_size == 12); | |
9479 | ||
9480 | if (cu_header->initial_length_size != *bytes_read) | |
9481 | complaint (&symfile_complaints, | |
9482 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 9483 | |
c764a876 | 9484 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 9485 | return length; |
613e1657 KB |
9486 | } |
9487 | ||
9488 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 9489 | given by cu_header->offset_size. */ |
613e1657 KB |
9490 | |
9491 | static LONGEST | |
fe1b8b76 | 9492 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 9493 | unsigned int *bytes_read) |
c764a876 DE |
9494 | { |
9495 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 9496 | |
c764a876 DE |
9497 | *bytes_read = cu_header->offset_size; |
9498 | return offset; | |
9499 | } | |
9500 | ||
9501 | /* Read an offset from the data stream. */ | |
9502 | ||
9503 | static LONGEST | |
9504 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
9505 | { |
9506 | LONGEST retval = 0; | |
9507 | ||
c764a876 | 9508 | switch (offset_size) |
613e1657 KB |
9509 | { |
9510 | case 4: | |
fe1b8b76 | 9511 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
9512 | break; |
9513 | case 8: | |
fe1b8b76 | 9514 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
9515 | break; |
9516 | default: | |
8e65ff28 | 9517 | internal_error (__FILE__, __LINE__, |
c764a876 | 9518 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 9519 | bfd_get_filename (abfd)); |
613e1657 KB |
9520 | } |
9521 | ||
917c78fc | 9522 | return retval; |
613e1657 KB |
9523 | } |
9524 | ||
fe1b8b76 JB |
9525 | static gdb_byte * |
9526 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
9527 | { |
9528 | /* If the size of a host char is 8 bits, we can return a pointer | |
9529 | to the buffer, otherwise we have to copy the data to a buffer | |
9530 | allocated on the temporary obstack. */ | |
4bdf3d34 | 9531 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 9532 | return buf; |
c906108c SS |
9533 | } |
9534 | ||
9535 | static char * | |
9b1c24c8 | 9536 | read_direct_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
9537 | { |
9538 | /* If the size of a host char is 8 bits, we can return a pointer | |
9539 | to the string, otherwise we have to copy the string to a buffer | |
9540 | allocated on the temporary obstack. */ | |
4bdf3d34 | 9541 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
9542 | if (*buf == '\0') |
9543 | { | |
9544 | *bytes_read_ptr = 1; | |
9545 | return NULL; | |
9546 | } | |
fe1b8b76 JB |
9547 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
9548 | return (char *) buf; | |
4bdf3d34 JJ |
9549 | } |
9550 | ||
9551 | static char * | |
fe1b8b76 | 9552 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
9553 | const struct comp_unit_head *cu_header, |
9554 | unsigned int *bytes_read_ptr) | |
9555 | { | |
c764a876 | 9556 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); |
c906108c | 9557 | |
be391dca | 9558 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 9559 | if (dwarf2_per_objfile->str.buffer == NULL) |
c906108c | 9560 | { |
8a3fe4f8 | 9561 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 9562 | bfd_get_filename (abfd)); |
4bdf3d34 | 9563 | return NULL; |
c906108c | 9564 | } |
dce234bc | 9565 | if (str_offset >= dwarf2_per_objfile->str.size) |
c906108c | 9566 | { |
8a3fe4f8 | 9567 | error (_("DW_FORM_strp pointing outside of .debug_str section [in module %s]"), |
659b0389 | 9568 | bfd_get_filename (abfd)); |
c906108c SS |
9569 | return NULL; |
9570 | } | |
4bdf3d34 | 9571 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 9572 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 9573 | return NULL; |
dce234bc | 9574 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
9575 | } |
9576 | ||
ce5d95e1 | 9577 | static unsigned long |
fe1b8b76 | 9578 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 9579 | { |
ce5d95e1 JB |
9580 | unsigned long result; |
9581 | unsigned int num_read; | |
c906108c SS |
9582 | int i, shift; |
9583 | unsigned char byte; | |
9584 | ||
9585 | result = 0; | |
9586 | shift = 0; | |
9587 | num_read = 0; | |
9588 | i = 0; | |
9589 | while (1) | |
9590 | { | |
fe1b8b76 | 9591 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
9592 | buf++; |
9593 | num_read++; | |
ce5d95e1 | 9594 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
9595 | if ((byte & 128) == 0) |
9596 | { | |
9597 | break; | |
9598 | } | |
9599 | shift += 7; | |
9600 | } | |
9601 | *bytes_read_ptr = num_read; | |
9602 | return result; | |
9603 | } | |
9604 | ||
ce5d95e1 | 9605 | static long |
fe1b8b76 | 9606 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 9607 | { |
ce5d95e1 | 9608 | long result; |
77e0b926 | 9609 | int i, shift, num_read; |
c906108c SS |
9610 | unsigned char byte; |
9611 | ||
9612 | result = 0; | |
9613 | shift = 0; | |
c906108c SS |
9614 | num_read = 0; |
9615 | i = 0; | |
9616 | while (1) | |
9617 | { | |
fe1b8b76 | 9618 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
9619 | buf++; |
9620 | num_read++; | |
ce5d95e1 | 9621 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
9622 | shift += 7; |
9623 | if ((byte & 128) == 0) | |
9624 | { | |
9625 | break; | |
9626 | } | |
9627 | } | |
77e0b926 DJ |
9628 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
9629 | result |= -(((long)1) << shift); | |
c906108c SS |
9630 | *bytes_read_ptr = num_read; |
9631 | return result; | |
9632 | } | |
9633 | ||
4bb7a0a7 DJ |
9634 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
9635 | ||
fe1b8b76 JB |
9636 | static gdb_byte * |
9637 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
9638 | { |
9639 | int byte; | |
9640 | ||
9641 | while (1) | |
9642 | { | |
fe1b8b76 | 9643 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
9644 | buf++; |
9645 | if ((byte & 128) == 0) | |
9646 | return buf; | |
9647 | } | |
9648 | } | |
9649 | ||
c906108c | 9650 | static void |
e142c38c | 9651 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
9652 | { |
9653 | switch (lang) | |
9654 | { | |
9655 | case DW_LANG_C89: | |
76bee0cc | 9656 | case DW_LANG_C99: |
c906108c | 9657 | case DW_LANG_C: |
e142c38c | 9658 | cu->language = language_c; |
c906108c SS |
9659 | break; |
9660 | case DW_LANG_C_plus_plus: | |
e142c38c | 9661 | cu->language = language_cplus; |
c906108c | 9662 | break; |
6aecb9c2 JB |
9663 | case DW_LANG_D: |
9664 | cu->language = language_d; | |
9665 | break; | |
c906108c SS |
9666 | case DW_LANG_Fortran77: |
9667 | case DW_LANG_Fortran90: | |
b21b22e0 | 9668 | case DW_LANG_Fortran95: |
e142c38c | 9669 | cu->language = language_fortran; |
c906108c SS |
9670 | break; |
9671 | case DW_LANG_Mips_Assembler: | |
e142c38c | 9672 | cu->language = language_asm; |
c906108c | 9673 | break; |
bebd888e | 9674 | case DW_LANG_Java: |
e142c38c | 9675 | cu->language = language_java; |
bebd888e | 9676 | break; |
c906108c | 9677 | case DW_LANG_Ada83: |
8aaf0b47 | 9678 | case DW_LANG_Ada95: |
bc5f45f8 JB |
9679 | cu->language = language_ada; |
9680 | break; | |
72019c9c GM |
9681 | case DW_LANG_Modula2: |
9682 | cu->language = language_m2; | |
9683 | break; | |
fe8e67fd PM |
9684 | case DW_LANG_Pascal83: |
9685 | cu->language = language_pascal; | |
9686 | break; | |
22566fbd DJ |
9687 | case DW_LANG_ObjC: |
9688 | cu->language = language_objc; | |
9689 | break; | |
c906108c SS |
9690 | case DW_LANG_Cobol74: |
9691 | case DW_LANG_Cobol85: | |
c906108c | 9692 | default: |
e142c38c | 9693 | cu->language = language_minimal; |
c906108c SS |
9694 | break; |
9695 | } | |
e142c38c | 9696 | cu->language_defn = language_def (cu->language); |
c906108c SS |
9697 | } |
9698 | ||
9699 | /* Return the named attribute or NULL if not there. */ | |
9700 | ||
9701 | static struct attribute * | |
e142c38c | 9702 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
9703 | { |
9704 | unsigned int i; | |
9705 | struct attribute *spec = NULL; | |
9706 | ||
9707 | for (i = 0; i < die->num_attrs; ++i) | |
9708 | { | |
9709 | if (die->attrs[i].name == name) | |
10b3939b | 9710 | return &die->attrs[i]; |
c906108c SS |
9711 | if (die->attrs[i].name == DW_AT_specification |
9712 | || die->attrs[i].name == DW_AT_abstract_origin) | |
9713 | spec = &die->attrs[i]; | |
9714 | } | |
c906108c | 9715 | |
10b3939b | 9716 | if (spec) |
f2f0e013 DJ |
9717 | { |
9718 | die = follow_die_ref (die, spec, &cu); | |
9719 | return dwarf2_attr (die, name, cu); | |
9720 | } | |
c5aa993b | 9721 | |
c906108c SS |
9722 | return NULL; |
9723 | } | |
9724 | ||
348e048f DE |
9725 | /* Return the named attribute or NULL if not there, |
9726 | but do not follow DW_AT_specification, etc. | |
9727 | This is for use in contexts where we're reading .debug_types dies. | |
9728 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
9729 | back up the chain, and we want to go down. */ | |
9730 | ||
9731 | static struct attribute * | |
9732 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name, | |
9733 | struct dwarf2_cu *cu) | |
9734 | { | |
9735 | unsigned int i; | |
9736 | ||
9737 | for (i = 0; i < die->num_attrs; ++i) | |
9738 | if (die->attrs[i].name == name) | |
9739 | return &die->attrs[i]; | |
9740 | ||
9741 | return NULL; | |
9742 | } | |
9743 | ||
05cf31d1 JB |
9744 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
9745 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 9746 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
9747 | |
9748 | static int | |
9749 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
9750 | { | |
9751 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
9752 | ||
9753 | return (attr && DW_UNSND (attr)); | |
9754 | } | |
9755 | ||
3ca72b44 | 9756 | static int |
e142c38c | 9757 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 9758 | { |
05cf31d1 JB |
9759 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
9760 | which value is non-zero. However, we have to be careful with | |
9761 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
9762 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
9763 | end up accidently finding a declaration attribute that belongs | |
9764 | to a different DIE referenced by the specification attribute, | |
9765 | even though the given DIE does not have a declaration attribute. */ | |
9766 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
9767 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
9768 | } |
9769 | ||
63d06c5c | 9770 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 9771 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
9772 | containing the return value on output. If there is no |
9773 | specification, but there is an abstract origin, that is | |
9774 | returned. */ | |
63d06c5c DC |
9775 | |
9776 | static struct die_info * | |
f2f0e013 | 9777 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 9778 | { |
f2f0e013 DJ |
9779 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
9780 | *spec_cu); | |
63d06c5c | 9781 | |
edb3359d DJ |
9782 | if (spec_attr == NULL) |
9783 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
9784 | ||
63d06c5c DC |
9785 | if (spec_attr == NULL) |
9786 | return NULL; | |
9787 | else | |
f2f0e013 | 9788 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 9789 | } |
c906108c | 9790 | |
debd256d JB |
9791 | /* Free the line_header structure *LH, and any arrays and strings it |
9792 | refers to. */ | |
9793 | static void | |
9794 | free_line_header (struct line_header *lh) | |
9795 | { | |
9796 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 9797 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
9798 | |
9799 | /* Remember that all the lh->file_names[i].name pointers are | |
9800 | pointers into debug_line_buffer, and don't need to be freed. */ | |
9801 | if (lh->file_names) | |
a8bc7b56 | 9802 | xfree (lh->file_names); |
debd256d JB |
9803 | |
9804 | /* Similarly for the include directory names. */ | |
9805 | if (lh->include_dirs) | |
a8bc7b56 | 9806 | xfree (lh->include_dirs); |
debd256d | 9807 | |
a8bc7b56 | 9808 | xfree (lh); |
debd256d JB |
9809 | } |
9810 | ||
9811 | ||
9812 | /* Add an entry to LH's include directory table. */ | |
9813 | static void | |
9814 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 9815 | { |
debd256d JB |
9816 | /* Grow the array if necessary. */ |
9817 | if (lh->include_dirs_size == 0) | |
c5aa993b | 9818 | { |
debd256d JB |
9819 | lh->include_dirs_size = 1; /* for testing */ |
9820 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
9821 | * sizeof (*lh->include_dirs)); | |
9822 | } | |
9823 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
9824 | { | |
9825 | lh->include_dirs_size *= 2; | |
9826 | lh->include_dirs = xrealloc (lh->include_dirs, | |
9827 | (lh->include_dirs_size | |
9828 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 9829 | } |
c906108c | 9830 | |
debd256d JB |
9831 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
9832 | } | |
6e70227d | 9833 | |
debd256d JB |
9834 | |
9835 | /* Add an entry to LH's file name table. */ | |
9836 | static void | |
9837 | add_file_name (struct line_header *lh, | |
9838 | char *name, | |
9839 | unsigned int dir_index, | |
9840 | unsigned int mod_time, | |
9841 | unsigned int length) | |
9842 | { | |
9843 | struct file_entry *fe; | |
9844 | ||
9845 | /* Grow the array if necessary. */ | |
9846 | if (lh->file_names_size == 0) | |
9847 | { | |
9848 | lh->file_names_size = 1; /* for testing */ | |
9849 | lh->file_names = xmalloc (lh->file_names_size | |
9850 | * sizeof (*lh->file_names)); | |
9851 | } | |
9852 | else if (lh->num_file_names >= lh->file_names_size) | |
9853 | { | |
9854 | lh->file_names_size *= 2; | |
9855 | lh->file_names = xrealloc (lh->file_names, | |
9856 | (lh->file_names_size | |
9857 | * sizeof (*lh->file_names))); | |
9858 | } | |
9859 | ||
9860 | fe = &lh->file_names[lh->num_file_names++]; | |
9861 | fe->name = name; | |
9862 | fe->dir_index = dir_index; | |
9863 | fe->mod_time = mod_time; | |
9864 | fe->length = length; | |
aaa75496 | 9865 | fe->included_p = 0; |
cb1df416 | 9866 | fe->symtab = NULL; |
debd256d | 9867 | } |
6e70227d | 9868 | |
debd256d JB |
9869 | |
9870 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
9871 | .debug_line, according to the endianness of ABFD. Return a pointer |
9872 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
9873 | |
9874 | NOTE: the strings in the include directory and file name tables of | |
9875 | the returned object point into debug_line_buffer, and must not be | |
9876 | freed. */ | |
9877 | static struct line_header * | |
9878 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 9879 | struct dwarf2_cu *cu) |
debd256d JB |
9880 | { |
9881 | struct cleanup *back_to; | |
9882 | struct line_header *lh; | |
fe1b8b76 | 9883 | gdb_byte *line_ptr; |
c764a876 | 9884 | unsigned int bytes_read, offset_size; |
debd256d JB |
9885 | int i; |
9886 | char *cur_dir, *cur_file; | |
9887 | ||
be391dca | 9888 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->line); |
dce234bc | 9889 | if (dwarf2_per_objfile->line.buffer == NULL) |
debd256d | 9890 | { |
e2e0b3e5 | 9891 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
9892 | return 0; |
9893 | } | |
9894 | ||
a738430d MK |
9895 | /* Make sure that at least there's room for the total_length field. |
9896 | That could be 12 bytes long, but we're just going to fudge that. */ | |
dce234bc | 9897 | if (offset + 4 >= dwarf2_per_objfile->line.size) |
debd256d | 9898 | { |
4d3c2250 | 9899 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
9900 | return 0; |
9901 | } | |
9902 | ||
9903 | lh = xmalloc (sizeof (*lh)); | |
9904 | memset (lh, 0, sizeof (*lh)); | |
9905 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
9906 | (void *) lh); | |
9907 | ||
dce234bc | 9908 | line_ptr = dwarf2_per_objfile->line.buffer + offset; |
debd256d | 9909 | |
a738430d | 9910 | /* Read in the header. */ |
6e70227d | 9911 | lh->total_length = |
c764a876 DE |
9912 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
9913 | &bytes_read, &offset_size); | |
debd256d | 9914 | line_ptr += bytes_read; |
dce234bc PP |
9915 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line.buffer |
9916 | + dwarf2_per_objfile->line.size)) | |
debd256d | 9917 | { |
4d3c2250 | 9918 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
9919 | return 0; |
9920 | } | |
9921 | lh->statement_program_end = line_ptr + lh->total_length; | |
9922 | lh->version = read_2_bytes (abfd, line_ptr); | |
9923 | line_ptr += 2; | |
c764a876 DE |
9924 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
9925 | line_ptr += offset_size; | |
debd256d JB |
9926 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
9927 | line_ptr += 1; | |
2dc7f7b3 TT |
9928 | if (lh->version >= 4) |
9929 | { | |
9930 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
9931 | line_ptr += 1; | |
9932 | } | |
9933 | else | |
9934 | lh->maximum_ops_per_instruction = 1; | |
9935 | ||
9936 | if (lh->maximum_ops_per_instruction == 0) | |
9937 | { | |
9938 | lh->maximum_ops_per_instruction = 1; | |
9939 | complaint (&symfile_complaints, | |
9940 | _("invalid maximum_ops_per_instruction in `.debug_line' section")); | |
9941 | } | |
9942 | ||
debd256d JB |
9943 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
9944 | line_ptr += 1; | |
9945 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
9946 | line_ptr += 1; | |
9947 | lh->line_range = read_1_byte (abfd, line_ptr); | |
9948 | line_ptr += 1; | |
9949 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
9950 | line_ptr += 1; | |
9951 | lh->standard_opcode_lengths | |
fe1b8b76 | 9952 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
9953 | |
9954 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
9955 | for (i = 1; i < lh->opcode_base; ++i) | |
9956 | { | |
9957 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
9958 | line_ptr += 1; | |
9959 | } | |
9960 | ||
a738430d | 9961 | /* Read directory table. */ |
9b1c24c8 | 9962 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
9963 | { |
9964 | line_ptr += bytes_read; | |
9965 | add_include_dir (lh, cur_dir); | |
9966 | } | |
9967 | line_ptr += bytes_read; | |
9968 | ||
a738430d | 9969 | /* Read file name table. */ |
9b1c24c8 | 9970 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
9971 | { |
9972 | unsigned int dir_index, mod_time, length; | |
9973 | ||
9974 | line_ptr += bytes_read; | |
9975 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9976 | line_ptr += bytes_read; | |
9977 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9978 | line_ptr += bytes_read; | |
9979 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9980 | line_ptr += bytes_read; | |
9981 | ||
9982 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
9983 | } | |
9984 | line_ptr += bytes_read; | |
6e70227d | 9985 | lh->statement_program_start = line_ptr; |
debd256d | 9986 | |
dce234bc PP |
9987 | if (line_ptr > (dwarf2_per_objfile->line.buffer |
9988 | + dwarf2_per_objfile->line.size)) | |
4d3c2250 | 9989 | complaint (&symfile_complaints, |
e2e0b3e5 | 9990 | _("line number info header doesn't fit in `.debug_line' section")); |
debd256d JB |
9991 | |
9992 | discard_cleanups (back_to); | |
9993 | return lh; | |
9994 | } | |
c906108c | 9995 | |
5fb290d7 DJ |
9996 | /* This function exists to work around a bug in certain compilers |
9997 | (particularly GCC 2.95), in which the first line number marker of a | |
9998 | function does not show up until after the prologue, right before | |
9999 | the second line number marker. This function shifts ADDRESS down | |
10000 | to the beginning of the function if necessary, and is called on | |
10001 | addresses passed to record_line. */ | |
10002 | ||
10003 | static CORE_ADDR | |
e142c38c | 10004 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
10005 | { |
10006 | struct function_range *fn; | |
10007 | ||
10008 | /* Find the function_range containing address. */ | |
e142c38c | 10009 | if (!cu->first_fn) |
5fb290d7 DJ |
10010 | return address; |
10011 | ||
e142c38c DJ |
10012 | if (!cu->cached_fn) |
10013 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 10014 | |
e142c38c | 10015 | fn = cu->cached_fn; |
5fb290d7 DJ |
10016 | while (fn) |
10017 | if (fn->lowpc <= address && fn->highpc > address) | |
10018 | goto found; | |
10019 | else | |
10020 | fn = fn->next; | |
10021 | ||
e142c38c DJ |
10022 | fn = cu->first_fn; |
10023 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
10024 | if (fn->lowpc <= address && fn->highpc > address) |
10025 | goto found; | |
10026 | else | |
10027 | fn = fn->next; | |
10028 | ||
10029 | return address; | |
10030 | ||
10031 | found: | |
10032 | if (fn->seen_line) | |
10033 | return address; | |
10034 | if (address != fn->lowpc) | |
4d3c2250 | 10035 | complaint (&symfile_complaints, |
e2e0b3e5 | 10036 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 10037 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
10038 | fn->seen_line = 1; |
10039 | return fn->lowpc; | |
10040 | } | |
10041 | ||
c6da4cef DE |
10042 | /* Subroutine of dwarf_decode_lines to simplify it. |
10043 | Return the file name of the psymtab for included file FILE_INDEX | |
10044 | in line header LH of PST. | |
10045 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
10046 | If space for the result is malloc'd, it will be freed by a cleanup. | |
10047 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
10048 | ||
10049 | static char * | |
10050 | psymtab_include_file_name (const struct line_header *lh, int file_index, | |
10051 | const struct partial_symtab *pst, | |
10052 | const char *comp_dir) | |
10053 | { | |
10054 | const struct file_entry fe = lh->file_names [file_index]; | |
10055 | char *include_name = fe.name; | |
10056 | char *include_name_to_compare = include_name; | |
10057 | char *dir_name = NULL; | |
72b9f47f TT |
10058 | const char *pst_filename; |
10059 | char *copied_name = NULL; | |
c6da4cef DE |
10060 | int file_is_pst; |
10061 | ||
10062 | if (fe.dir_index) | |
10063 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
10064 | ||
10065 | if (!IS_ABSOLUTE_PATH (include_name) | |
10066 | && (dir_name != NULL || comp_dir != NULL)) | |
10067 | { | |
10068 | /* Avoid creating a duplicate psymtab for PST. | |
10069 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
10070 | Before we do the comparison, however, we need to account | |
10071 | for DIR_NAME and COMP_DIR. | |
10072 | First prepend dir_name (if non-NULL). If we still don't | |
10073 | have an absolute path prepend comp_dir (if non-NULL). | |
10074 | However, the directory we record in the include-file's | |
10075 | psymtab does not contain COMP_DIR (to match the | |
10076 | corresponding symtab(s)). | |
10077 | ||
10078 | Example: | |
10079 | ||
10080 | bash$ cd /tmp | |
10081 | bash$ gcc -g ./hello.c | |
10082 | include_name = "hello.c" | |
10083 | dir_name = "." | |
10084 | DW_AT_comp_dir = comp_dir = "/tmp" | |
10085 | DW_AT_name = "./hello.c" */ | |
10086 | ||
10087 | if (dir_name != NULL) | |
10088 | { | |
10089 | include_name = concat (dir_name, SLASH_STRING, | |
10090 | include_name, (char *)NULL); | |
10091 | include_name_to_compare = include_name; | |
10092 | make_cleanup (xfree, include_name); | |
10093 | } | |
10094 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
10095 | { | |
10096 | include_name_to_compare = concat (comp_dir, SLASH_STRING, | |
10097 | include_name, (char *)NULL); | |
10098 | } | |
10099 | } | |
10100 | ||
10101 | pst_filename = pst->filename; | |
10102 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
10103 | { | |
72b9f47f TT |
10104 | copied_name = concat (pst->dirname, SLASH_STRING, |
10105 | pst_filename, (char *)NULL); | |
10106 | pst_filename = copied_name; | |
c6da4cef DE |
10107 | } |
10108 | ||
1e3fad37 | 10109 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef DE |
10110 | |
10111 | if (include_name_to_compare != include_name) | |
10112 | xfree (include_name_to_compare); | |
72b9f47f TT |
10113 | if (copied_name != NULL) |
10114 | xfree (copied_name); | |
c6da4cef DE |
10115 | |
10116 | if (file_is_pst) | |
10117 | return NULL; | |
10118 | return include_name; | |
10119 | } | |
10120 | ||
aaa75496 JB |
10121 | /* Decode the Line Number Program (LNP) for the given line_header |
10122 | structure and CU. The actual information extracted and the type | |
10123 | of structures created from the LNP depends on the value of PST. | |
10124 | ||
10125 | 1. If PST is NULL, then this procedure uses the data from the program | |
10126 | to create all necessary symbol tables, and their linetables. | |
6e70227d | 10127 | |
aaa75496 JB |
10128 | 2. If PST is not NULL, this procedure reads the program to determine |
10129 | the list of files included by the unit represented by PST, and | |
c6da4cef DE |
10130 | builds all the associated partial symbol tables. |
10131 | ||
10132 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
10133 | It is used for relative paths in the line table. | |
10134 | NOTE: When processing partial symtabs (pst != NULL), | |
10135 | comp_dir == pst->dirname. | |
10136 | ||
10137 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
10138 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
10139 | symtab we don't use it in the name of the psymtabs we create. | |
10140 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
10141 | A good testcase for this is mb-inline.exp. */ | |
debd256d | 10142 | |
c906108c | 10143 | static void |
72b9f47f | 10144 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, bfd *abfd, |
aaa75496 | 10145 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 10146 | { |
a8c50c1f | 10147 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 10148 | gdb_byte *line_end; |
a8c50c1f | 10149 | unsigned int bytes_read, extended_len; |
c906108c | 10150 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
10151 | CORE_ADDR baseaddr; |
10152 | struct objfile *objfile = cu->objfile; | |
fbf65064 | 10153 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 10154 | const int decode_for_pst_p = (pst != NULL); |
cb1df416 | 10155 | struct subfile *last_subfile = NULL, *first_subfile = current_subfile; |
e142c38c DJ |
10156 | |
10157 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 10158 | |
debd256d JB |
10159 | line_ptr = lh->statement_program_start; |
10160 | line_end = lh->statement_program_end; | |
c906108c SS |
10161 | |
10162 | /* Read the statement sequences until there's nothing left. */ | |
10163 | while (line_ptr < line_end) | |
10164 | { | |
10165 | /* state machine registers */ | |
10166 | CORE_ADDR address = 0; | |
10167 | unsigned int file = 1; | |
10168 | unsigned int line = 1; | |
10169 | unsigned int column = 0; | |
debd256d | 10170 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
10171 | int basic_block = 0; |
10172 | int end_sequence = 0; | |
fbf65064 | 10173 | CORE_ADDR addr; |
2dc7f7b3 | 10174 | unsigned char op_index = 0; |
c906108c | 10175 | |
aaa75496 | 10176 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 10177 | { |
aaa75496 | 10178 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
10179 | /* lh->include_dirs and lh->file_names are 0-based, but the |
10180 | directory and file name numbers in the statement program | |
10181 | are 1-based. */ | |
10182 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 10183 | char *dir = NULL; |
a738430d | 10184 | |
debd256d JB |
10185 | if (fe->dir_index) |
10186 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
10187 | |
10188 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
10189 | } |
10190 | ||
a738430d | 10191 | /* Decode the table. */ |
c5aa993b | 10192 | while (!end_sequence) |
c906108c SS |
10193 | { |
10194 | op_code = read_1_byte (abfd, line_ptr); | |
10195 | line_ptr += 1; | |
59205f5a JB |
10196 | if (line_ptr > line_end) |
10197 | { | |
10198 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
10199 | break; | |
10200 | } | |
9aa1fe7e | 10201 | |
debd256d | 10202 | if (op_code >= lh->opcode_base) |
6e70227d | 10203 | { |
a738430d | 10204 | /* Special operand. */ |
debd256d | 10205 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
10206 | address += (((op_index + (adj_opcode / lh->line_range)) |
10207 | / lh->maximum_ops_per_instruction) | |
10208 | * lh->minimum_instruction_length); | |
10209 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
10210 | % lh->maximum_ops_per_instruction); | |
debd256d | 10211 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 10212 | if (lh->num_file_names < file || file == 0) |
25e43795 | 10213 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
10214 | /* For now we ignore lines not starting on an |
10215 | instruction boundary. */ | |
10216 | else if (op_index == 0) | |
25e43795 DJ |
10217 | { |
10218 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 10219 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
10220 | { |
10221 | if (last_subfile != current_subfile) | |
10222 | { | |
10223 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
10224 | if (last_subfile) | |
10225 | record_line (last_subfile, 0, addr); | |
10226 | last_subfile = current_subfile; | |
10227 | } | |
25e43795 | 10228 | /* Append row to matrix using current values. */ |
fbf65064 UW |
10229 | addr = check_cu_functions (address, cu); |
10230 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
10231 | record_line (current_subfile, line, addr); | |
366da635 | 10232 | } |
25e43795 | 10233 | } |
ca5f395d | 10234 | basic_block = 0; |
9aa1fe7e GK |
10235 | } |
10236 | else switch (op_code) | |
c906108c SS |
10237 | { |
10238 | case DW_LNS_extended_op: | |
a8c50c1f | 10239 | extended_len = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
473b7be6 | 10240 | line_ptr += bytes_read; |
a8c50c1f | 10241 | extended_end = line_ptr + extended_len; |
c906108c SS |
10242 | extended_op = read_1_byte (abfd, line_ptr); |
10243 | line_ptr += 1; | |
10244 | switch (extended_op) | |
10245 | { | |
10246 | case DW_LNE_end_sequence: | |
10247 | end_sequence = 1; | |
c906108c SS |
10248 | break; |
10249 | case DW_LNE_set_address: | |
e7c27a73 | 10250 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
2dc7f7b3 | 10251 | op_index = 0; |
107d2387 AC |
10252 | line_ptr += bytes_read; |
10253 | address += baseaddr; | |
c906108c SS |
10254 | break; |
10255 | case DW_LNE_define_file: | |
debd256d JB |
10256 | { |
10257 | char *cur_file; | |
10258 | unsigned int dir_index, mod_time, length; | |
6e70227d | 10259 | |
9b1c24c8 | 10260 | cur_file = read_direct_string (abfd, line_ptr, &bytes_read); |
debd256d JB |
10261 | line_ptr += bytes_read; |
10262 | dir_index = | |
10263 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10264 | line_ptr += bytes_read; | |
10265 | mod_time = | |
10266 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10267 | line_ptr += bytes_read; | |
10268 | length = | |
10269 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10270 | line_ptr += bytes_read; | |
10271 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
10272 | } | |
c906108c | 10273 | break; |
d0c6ba3d CC |
10274 | case DW_LNE_set_discriminator: |
10275 | /* The discriminator is not interesting to the debugger; | |
10276 | just ignore it. */ | |
10277 | line_ptr = extended_end; | |
10278 | break; | |
c906108c | 10279 | default: |
4d3c2250 | 10280 | complaint (&symfile_complaints, |
e2e0b3e5 | 10281 | _("mangled .debug_line section")); |
debd256d | 10282 | return; |
c906108c | 10283 | } |
a8c50c1f DJ |
10284 | /* Make sure that we parsed the extended op correctly. If e.g. |
10285 | we expected a different address size than the producer used, | |
10286 | we may have read the wrong number of bytes. */ | |
10287 | if (line_ptr != extended_end) | |
10288 | { | |
10289 | complaint (&symfile_complaints, | |
10290 | _("mangled .debug_line section")); | |
10291 | return; | |
10292 | } | |
c906108c SS |
10293 | break; |
10294 | case DW_LNS_copy: | |
59205f5a | 10295 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
10296 | dwarf2_debug_line_missing_file_complaint (); |
10297 | else | |
366da635 | 10298 | { |
25e43795 | 10299 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 10300 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
10301 | { |
10302 | if (last_subfile != current_subfile) | |
10303 | { | |
10304 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
10305 | if (last_subfile) | |
10306 | record_line (last_subfile, 0, addr); | |
10307 | last_subfile = current_subfile; | |
10308 | } | |
10309 | addr = check_cu_functions (address, cu); | |
10310 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
10311 | record_line (current_subfile, line, addr); | |
10312 | } | |
366da635 | 10313 | } |
c906108c SS |
10314 | basic_block = 0; |
10315 | break; | |
10316 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
10317 | { |
10318 | CORE_ADDR adjust | |
10319 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10320 | ||
10321 | address += (((op_index + adjust) | |
10322 | / lh->maximum_ops_per_instruction) | |
10323 | * lh->minimum_instruction_length); | |
10324 | op_index = ((op_index + adjust) | |
10325 | % lh->maximum_ops_per_instruction); | |
10326 | line_ptr += bytes_read; | |
10327 | } | |
c906108c SS |
10328 | break; |
10329 | case DW_LNS_advance_line: | |
10330 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
10331 | line_ptr += bytes_read; | |
10332 | break; | |
10333 | case DW_LNS_set_file: | |
debd256d | 10334 | { |
a738430d MK |
10335 | /* The arrays lh->include_dirs and lh->file_names are |
10336 | 0-based, but the directory and file name numbers in | |
10337 | the statement program are 1-based. */ | |
debd256d | 10338 | struct file_entry *fe; |
4f1520fb | 10339 | char *dir = NULL; |
a738430d | 10340 | |
debd256d JB |
10341 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
10342 | line_ptr += bytes_read; | |
59205f5a | 10343 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
10344 | dwarf2_debug_line_missing_file_complaint (); |
10345 | else | |
10346 | { | |
10347 | fe = &lh->file_names[file - 1]; | |
10348 | if (fe->dir_index) | |
10349 | dir = lh->include_dirs[fe->dir_index - 1]; | |
10350 | if (!decode_for_pst_p) | |
10351 | { | |
10352 | last_subfile = current_subfile; | |
10353 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
10354 | } | |
10355 | } | |
debd256d | 10356 | } |
c906108c SS |
10357 | break; |
10358 | case DW_LNS_set_column: | |
10359 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10360 | line_ptr += bytes_read; | |
10361 | break; | |
10362 | case DW_LNS_negate_stmt: | |
10363 | is_stmt = (!is_stmt); | |
10364 | break; | |
10365 | case DW_LNS_set_basic_block: | |
10366 | basic_block = 1; | |
10367 | break; | |
c2c6d25f JM |
10368 | /* Add to the address register of the state machine the |
10369 | address increment value corresponding to special opcode | |
a738430d MK |
10370 | 255. I.e., this value is scaled by the minimum |
10371 | instruction length since special opcode 255 would have | |
10372 | scaled the the increment. */ | |
c906108c | 10373 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
10374 | { |
10375 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
10376 | ||
10377 | address += (((op_index + adjust) | |
10378 | / lh->maximum_ops_per_instruction) | |
10379 | * lh->minimum_instruction_length); | |
10380 | op_index = ((op_index + adjust) | |
10381 | % lh->maximum_ops_per_instruction); | |
10382 | } | |
c906108c SS |
10383 | break; |
10384 | case DW_LNS_fixed_advance_pc: | |
10385 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 10386 | op_index = 0; |
c906108c SS |
10387 | line_ptr += 2; |
10388 | break; | |
9aa1fe7e | 10389 | default: |
a738430d MK |
10390 | { |
10391 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 10392 | int i; |
a738430d | 10393 | |
debd256d | 10394 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
10395 | { |
10396 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10397 | line_ptr += bytes_read; | |
10398 | } | |
10399 | } | |
c906108c SS |
10400 | } |
10401 | } | |
59205f5a JB |
10402 | if (lh->num_file_names < file || file == 0) |
10403 | dwarf2_debug_line_missing_file_complaint (); | |
10404 | else | |
10405 | { | |
10406 | lh->file_names[file - 1].included_p = 1; | |
10407 | if (!decode_for_pst_p) | |
fbf65064 UW |
10408 | { |
10409 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
10410 | record_line (current_subfile, 0, addr); | |
10411 | } | |
59205f5a | 10412 | } |
c906108c | 10413 | } |
aaa75496 JB |
10414 | |
10415 | if (decode_for_pst_p) | |
10416 | { | |
10417 | int file_index; | |
10418 | ||
10419 | /* Now that we're done scanning the Line Header Program, we can | |
10420 | create the psymtab of each included file. */ | |
10421 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
10422 | if (lh->file_names[file_index].included_p == 1) | |
10423 | { | |
c6da4cef DE |
10424 | char *include_name = |
10425 | psymtab_include_file_name (lh, file_index, pst, comp_dir); | |
10426 | if (include_name != NULL) | |
aaa75496 JB |
10427 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
10428 | } | |
10429 | } | |
cb1df416 DJ |
10430 | else |
10431 | { | |
10432 | /* Make sure a symtab is created for every file, even files | |
10433 | which contain only variables (i.e. no code with associated | |
10434 | line numbers). */ | |
10435 | ||
10436 | int i; | |
10437 | struct file_entry *fe; | |
10438 | ||
10439 | for (i = 0; i < lh->num_file_names; i++) | |
10440 | { | |
10441 | char *dir = NULL; | |
9a619af0 | 10442 | |
cb1df416 DJ |
10443 | fe = &lh->file_names[i]; |
10444 | if (fe->dir_index) | |
10445 | dir = lh->include_dirs[fe->dir_index - 1]; | |
10446 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
10447 | ||
10448 | /* Skip the main file; we don't need it, and it must be | |
10449 | allocated last, so that it will show up before the | |
10450 | non-primary symtabs in the objfile's symtab list. */ | |
10451 | if (current_subfile == first_subfile) | |
10452 | continue; | |
10453 | ||
10454 | if (current_subfile->symtab == NULL) | |
10455 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
10456 | cu->objfile); | |
10457 | fe->symtab = current_subfile->symtab; | |
10458 | } | |
10459 | } | |
c906108c SS |
10460 | } |
10461 | ||
10462 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
10463 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
10464 | or NULL if not known. COMP_DIR is the compilation directory for the |
10465 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
10466 | This routine tries to keep line numbers from identical absolute and |
10467 | relative file names in a common subfile. | |
10468 | ||
10469 | Using the `list' example from the GDB testsuite, which resides in | |
10470 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
10471 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
10472 | ||
c5aa993b JM |
10473 | DW_AT_name: /srcdir/list0.c |
10474 | DW_AT_comp_dir: /compdir | |
357e46e7 | 10475 | files.files[0].name: list0.h |
c5aa993b | 10476 | files.files[0].dir: /srcdir |
357e46e7 | 10477 | files.files[1].name: list0.c |
c5aa993b | 10478 | files.files[1].dir: /srcdir |
c906108c SS |
10479 | |
10480 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
10481 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
10482 | start_subfile will ensure that this happens provided that we pass the | |
10483 | concatenation of files.files[1].dir and files.files[1].name as the | |
10484 | subfile's name. */ | |
c906108c SS |
10485 | |
10486 | static void | |
72b9f47f | 10487 | dwarf2_start_subfile (char *filename, const char *dirname, const char *comp_dir) |
c906108c | 10488 | { |
4f1520fb FR |
10489 | char *fullname; |
10490 | ||
10491 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
10492 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
10493 | second argument to start_subfile. To be consistent, we do the | |
10494 | same here. In order not to lose the line information directory, | |
10495 | we concatenate it to the filename when it makes sense. | |
10496 | Note that the Dwarf3 standard says (speaking of filenames in line | |
10497 | information): ``The directory index is ignored for file names | |
10498 | that represent full path names''. Thus ignoring dirname in the | |
10499 | `else' branch below isn't an issue. */ | |
c906108c | 10500 | |
d5166ae1 | 10501 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
10502 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
10503 | else | |
10504 | fullname = filename; | |
c906108c | 10505 | |
4f1520fb FR |
10506 | start_subfile (fullname, comp_dir); |
10507 | ||
10508 | if (fullname != filename) | |
10509 | xfree (fullname); | |
c906108c SS |
10510 | } |
10511 | ||
4c2df51b DJ |
10512 | static void |
10513 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 10514 | struct dwarf2_cu *cu) |
4c2df51b | 10515 | { |
e7c27a73 DJ |
10516 | struct objfile *objfile = cu->objfile; |
10517 | struct comp_unit_head *cu_header = &cu->header; | |
10518 | ||
4c2df51b DJ |
10519 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
10520 | code here to turn a symbol with DW_AT_external and a | |
10521 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
10522 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
10523 | with some versions of binutils) where shared libraries could have | |
10524 | relocations against symbols in their debug information - the | |
10525 | minimal symbol would have the right address, but the debug info | |
10526 | would not. It's no longer necessary, because we will explicitly | |
10527 | apply relocations when we read in the debug information now. */ | |
10528 | ||
10529 | /* A DW_AT_location attribute with no contents indicates that a | |
10530 | variable has been optimized away. */ | |
10531 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
10532 | { | |
10533 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
10534 | return; | |
10535 | } | |
10536 | ||
10537 | /* Handle one degenerate form of location expression specially, to | |
10538 | preserve GDB's previous behavior when section offsets are | |
10539 | specified. If this is just a DW_OP_addr then mark this symbol | |
10540 | as LOC_STATIC. */ | |
10541 | ||
10542 | if (attr_form_is_block (attr) | |
10543 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
10544 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
10545 | { | |
891d2f0b | 10546 | unsigned int dummy; |
4c2df51b DJ |
10547 | |
10548 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 10549 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
907fc202 | 10550 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
10551 | fixup_symbol_section (sym, objfile); |
10552 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
10553 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
10554 | return; |
10555 | } | |
10556 | ||
10557 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
10558 | expression evaluator, and use LOC_COMPUTED only when necessary | |
10559 | (i.e. when the value of a register or memory location is | |
10560 | referenced, or a thread-local block, etc.). Then again, it might | |
10561 | not be worthwhile. I'm assuming that it isn't unless performance | |
10562 | or memory numbers show me otherwise. */ | |
10563 | ||
e7c27a73 | 10564 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
10565 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
10566 | } | |
10567 | ||
c906108c SS |
10568 | /* Given a pointer to a DWARF information entry, figure out if we need |
10569 | to make a symbol table entry for it, and if so, create a new entry | |
10570 | and return a pointer to it. | |
10571 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
10572 | used the passed type. |
10573 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
10574 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
10575 | |
10576 | static struct symbol * | |
34eaf542 TT |
10577 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
10578 | struct symbol *space) | |
c906108c | 10579 | { |
e7c27a73 | 10580 | struct objfile *objfile = cu->objfile; |
c906108c SS |
10581 | struct symbol *sym = NULL; |
10582 | char *name; | |
10583 | struct attribute *attr = NULL; | |
10584 | struct attribute *attr2 = NULL; | |
e142c38c | 10585 | CORE_ADDR baseaddr; |
e37fd15a SW |
10586 | struct pending **list_to_add = NULL; |
10587 | ||
edb3359d | 10588 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
10589 | |
10590 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 10591 | |
94af9270 | 10592 | name = dwarf2_name (die, cu); |
c906108c SS |
10593 | if (name) |
10594 | { | |
94af9270 | 10595 | const char *linkagename; |
34eaf542 | 10596 | int suppress_add = 0; |
94af9270 | 10597 | |
34eaf542 TT |
10598 | if (space) |
10599 | sym = space; | |
10600 | else | |
10601 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
c906108c | 10602 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
10603 | |
10604 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
33e5013e | 10605 | SYMBOL_SET_LANGUAGE (sym, cu->language); |
94af9270 KS |
10606 | linkagename = dwarf2_physname (name, die, cu); |
10607 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 10608 | |
f55ee35c JK |
10609 | /* Fortran does not have mangling standard and the mangling does differ |
10610 | between gfortran, iFort etc. */ | |
10611 | if (cu->language == language_fortran | |
b250c185 | 10612 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d SW |
10613 | symbol_set_demangled_name (&(sym->ginfo), |
10614 | (char *) dwarf2_full_name (name, die, cu), | |
10615 | NULL); | |
f55ee35c | 10616 | |
c906108c | 10617 | /* Default assumptions. |
c5aa993b | 10618 | Use the passed type or decode it from the die. */ |
176620f1 | 10619 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 10620 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
10621 | if (type != NULL) |
10622 | SYMBOL_TYPE (sym) = type; | |
10623 | else | |
e7c27a73 | 10624 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
10625 | attr = dwarf2_attr (die, |
10626 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
10627 | cu); | |
c906108c SS |
10628 | if (attr) |
10629 | { | |
10630 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
10631 | } | |
cb1df416 | 10632 | |
edb3359d DJ |
10633 | attr = dwarf2_attr (die, |
10634 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
10635 | cu); | |
cb1df416 DJ |
10636 | if (attr) |
10637 | { | |
10638 | int file_index = DW_UNSND (attr); | |
9a619af0 | 10639 | |
cb1df416 DJ |
10640 | if (cu->line_header == NULL |
10641 | || file_index > cu->line_header->num_file_names) | |
10642 | complaint (&symfile_complaints, | |
10643 | _("file index out of range")); | |
1c3d648d | 10644 | else if (file_index > 0) |
cb1df416 DJ |
10645 | { |
10646 | struct file_entry *fe; | |
9a619af0 | 10647 | |
cb1df416 DJ |
10648 | fe = &cu->line_header->file_names[file_index - 1]; |
10649 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
10650 | } | |
10651 | } | |
10652 | ||
c906108c SS |
10653 | switch (die->tag) |
10654 | { | |
10655 | case DW_TAG_label: | |
e142c38c | 10656 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
10657 | if (attr) |
10658 | { | |
10659 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
10660 | } | |
0f5238ed TT |
10661 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
10662 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
c906108c | 10663 | SYMBOL_CLASS (sym) = LOC_LABEL; |
0f5238ed | 10664 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
10665 | break; |
10666 | case DW_TAG_subprogram: | |
10667 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
10668 | finish_block. */ | |
10669 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 10670 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
10671 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
10672 | || cu->language == language_ada) | |
c906108c | 10673 | { |
2cfa0c8d JB |
10674 | /* Subprograms marked external are stored as a global symbol. |
10675 | Ada subprograms, whether marked external or not, are always | |
10676 | stored as a global symbol, because we want to be able to | |
10677 | access them globally. For instance, we want to be able | |
10678 | to break on a nested subprogram without having to | |
10679 | specify the context. */ | |
e37fd15a | 10680 | list_to_add = &global_symbols; |
c906108c SS |
10681 | } |
10682 | else | |
10683 | { | |
e37fd15a | 10684 | list_to_add = cu->list_in_scope; |
c906108c SS |
10685 | } |
10686 | break; | |
edb3359d DJ |
10687 | case DW_TAG_inlined_subroutine: |
10688 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
10689 | finish_block. */ | |
10690 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
10691 | SYMBOL_INLINED (sym) = 1; | |
10692 | /* Do not add the symbol to any lists. It will be found via | |
10693 | BLOCK_FUNCTION from the blockvector. */ | |
10694 | break; | |
34eaf542 TT |
10695 | case DW_TAG_template_value_param: |
10696 | suppress_add = 1; | |
10697 | /* Fall through. */ | |
72929c62 | 10698 | case DW_TAG_constant: |
c906108c | 10699 | case DW_TAG_variable: |
254e6b9e | 10700 | case DW_TAG_member: |
c906108c SS |
10701 | /* Compilation with minimal debug info may result in variables |
10702 | with missing type entries. Change the misleading `void' type | |
10703 | to something sensible. */ | |
10704 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
64c50499 | 10705 | SYMBOL_TYPE (sym) |
46bf5051 | 10706 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 10707 | |
e142c38c | 10708 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
10709 | /* In the case of DW_TAG_member, we should only be called for |
10710 | static const members. */ | |
10711 | if (die->tag == DW_TAG_member) | |
10712 | { | |
3863f96c DE |
10713 | /* dwarf2_add_field uses die_is_declaration, |
10714 | so we do the same. */ | |
254e6b9e DE |
10715 | gdb_assert (die_is_declaration (die, cu)); |
10716 | gdb_assert (attr); | |
10717 | } | |
c906108c SS |
10718 | if (attr) |
10719 | { | |
e7c27a73 | 10720 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 10721 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 10722 | if (!suppress_add) |
34eaf542 TT |
10723 | { |
10724 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 10725 | list_to_add = &global_symbols; |
34eaf542 | 10726 | else |
e37fd15a | 10727 | list_to_add = cu->list_in_scope; |
34eaf542 | 10728 | } |
c906108c SS |
10729 | break; |
10730 | } | |
e142c38c | 10731 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
10732 | if (attr) |
10733 | { | |
e7c27a73 | 10734 | var_decode_location (attr, sym, cu); |
e142c38c | 10735 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
caac4577 JG |
10736 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
10737 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
10738 | && !dwarf2_per_objfile->has_section_at_zero) | |
10739 | { | |
10740 | /* When a static variable is eliminated by the linker, | |
10741 | the corresponding debug information is not stripped | |
10742 | out, but the variable address is set to null; | |
10743 | do not add such variables into symbol table. */ | |
10744 | } | |
10745 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 10746 | { |
f55ee35c JK |
10747 | /* Workaround gfortran PR debug/40040 - it uses |
10748 | DW_AT_location for variables in -fPIC libraries which may | |
10749 | get overriden by other libraries/executable and get | |
10750 | a different address. Resolve it by the minimal symbol | |
10751 | which may come from inferior's executable using copy | |
10752 | relocation. Make this workaround only for gfortran as for | |
10753 | other compilers GDB cannot guess the minimal symbol | |
10754 | Fortran mangling kind. */ | |
10755 | if (cu->language == language_fortran && die->parent | |
10756 | && die->parent->tag == DW_TAG_module | |
10757 | && cu->producer | |
10758 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
10759 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
10760 | ||
1c809c68 TT |
10761 | /* A variable with DW_AT_external is never static, |
10762 | but it may be block-scoped. */ | |
10763 | list_to_add = (cu->list_in_scope == &file_symbols | |
10764 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 10765 | } |
c906108c | 10766 | else |
e37fd15a | 10767 | list_to_add = cu->list_in_scope; |
c906108c SS |
10768 | } |
10769 | else | |
10770 | { | |
10771 | /* We do not know the address of this symbol. | |
c5aa993b JM |
10772 | If it is an external symbol and we have type information |
10773 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
10774 | The address of the variable will then be determined from | |
10775 | the minimal symbol table whenever the variable is | |
10776 | referenced. */ | |
e142c38c | 10777 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 10778 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 10779 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 10780 | { |
0fe7935b DJ |
10781 | /* A variable with DW_AT_external is never static, but it |
10782 | may be block-scoped. */ | |
10783 | list_to_add = (cu->list_in_scope == &file_symbols | |
10784 | ? &global_symbols : cu->list_in_scope); | |
10785 | ||
c906108c | 10786 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
c906108c | 10787 | } |
442ddf59 JK |
10788 | else if (!die_is_declaration (die, cu)) |
10789 | { | |
10790 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
10791 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
10792 | if (!suppress_add) |
10793 | list_to_add = cu->list_in_scope; | |
442ddf59 | 10794 | } |
c906108c SS |
10795 | } |
10796 | break; | |
10797 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
10798 | /* If we are inside a function, mark this as an argument. If |
10799 | not, we might be looking at an argument to an inlined function | |
10800 | when we do not have enough information to show inlined frames; | |
10801 | pretend it's a local variable in that case so that the user can | |
10802 | still see it. */ | |
10803 | if (context_stack_depth > 0 | |
10804 | && context_stack[context_stack_depth - 1].name != NULL) | |
10805 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 10806 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
10807 | if (attr) |
10808 | { | |
e7c27a73 | 10809 | var_decode_location (attr, sym, cu); |
c906108c | 10810 | } |
e142c38c | 10811 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
10812 | if (attr) |
10813 | { | |
e7c27a73 | 10814 | dwarf2_const_value (attr, sym, cu); |
c906108c | 10815 | } |
f346a30d PM |
10816 | attr = dwarf2_attr (die, DW_AT_variable_parameter, cu); |
10817 | if (attr && DW_UNSND (attr)) | |
10818 | { | |
10819 | struct type *ref_type; | |
10820 | ||
10821 | ref_type = lookup_reference_type (SYMBOL_TYPE (sym)); | |
10822 | SYMBOL_TYPE (sym) = ref_type; | |
10823 | } | |
10824 | ||
e37fd15a | 10825 | list_to_add = cu->list_in_scope; |
c906108c SS |
10826 | break; |
10827 | case DW_TAG_unspecified_parameters: | |
10828 | /* From varargs functions; gdb doesn't seem to have any | |
10829 | interest in this information, so just ignore it for now. | |
10830 | (FIXME?) */ | |
10831 | break; | |
34eaf542 TT |
10832 | case DW_TAG_template_type_param: |
10833 | suppress_add = 1; | |
10834 | /* Fall through. */ | |
c906108c | 10835 | case DW_TAG_class_type: |
680b30c7 | 10836 | case DW_TAG_interface_type: |
c906108c SS |
10837 | case DW_TAG_structure_type: |
10838 | case DW_TAG_union_type: | |
72019c9c | 10839 | case DW_TAG_set_type: |
c906108c SS |
10840 | case DW_TAG_enumeration_type: |
10841 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 10842 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 10843 | |
63d06c5c | 10844 | { |
987504bb | 10845 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
10846 | really ever be static objects: otherwise, if you try |
10847 | to, say, break of a class's method and you're in a file | |
10848 | which doesn't mention that class, it won't work unless | |
10849 | the check for all static symbols in lookup_symbol_aux | |
10850 | saves you. See the OtherFileClass tests in | |
10851 | gdb.c++/namespace.exp. */ | |
10852 | ||
e37fd15a | 10853 | if (!suppress_add) |
34eaf542 | 10854 | { |
34eaf542 TT |
10855 | list_to_add = (cu->list_in_scope == &file_symbols |
10856 | && (cu->language == language_cplus | |
10857 | || cu->language == language_java) | |
10858 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 10859 | |
64382290 TT |
10860 | /* The semantics of C++ state that "struct foo { |
10861 | ... }" also defines a typedef for "foo". A Java | |
10862 | class declaration also defines a typedef for the | |
10863 | class. */ | |
10864 | if (cu->language == language_cplus | |
10865 | || cu->language == language_java | |
10866 | || cu->language == language_ada) | |
10867 | { | |
10868 | /* The symbol's name is already allocated along | |
10869 | with this objfile, so we don't need to | |
10870 | duplicate it for the type. */ | |
10871 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
10872 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
10873 | } | |
63d06c5c DC |
10874 | } |
10875 | } | |
c906108c SS |
10876 | break; |
10877 | case DW_TAG_typedef: | |
63d06c5c DC |
10878 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
10879 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e37fd15a | 10880 | list_to_add = cu->list_in_scope; |
63d06c5c | 10881 | break; |
c906108c | 10882 | case DW_TAG_base_type: |
a02abb62 | 10883 | case DW_TAG_subrange_type: |
c906108c | 10884 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 10885 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 10886 | list_to_add = cu->list_in_scope; |
c906108c SS |
10887 | break; |
10888 | case DW_TAG_enumerator: | |
e142c38c | 10889 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
10890 | if (attr) |
10891 | { | |
e7c27a73 | 10892 | dwarf2_const_value (attr, sym, cu); |
c906108c | 10893 | } |
63d06c5c DC |
10894 | { |
10895 | /* NOTE: carlton/2003-11-10: See comment above in the | |
10896 | DW_TAG_class_type, etc. block. */ | |
10897 | ||
e142c38c | 10898 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
10899 | && (cu->language == language_cplus |
10900 | || cu->language == language_java) | |
e142c38c | 10901 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 10902 | } |
c906108c | 10903 | break; |
5c4e30ca DC |
10904 | case DW_TAG_namespace: |
10905 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
e37fd15a | 10906 | list_to_add = &global_symbols; |
5c4e30ca | 10907 | break; |
c906108c SS |
10908 | default: |
10909 | /* Not a tag we recognize. Hopefully we aren't processing | |
10910 | trash data, but since we must specifically ignore things | |
10911 | we don't recognize, there is nothing else we should do at | |
10912 | this point. */ | |
e2e0b3e5 | 10913 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 10914 | dwarf_tag_name (die->tag)); |
c906108c SS |
10915 | break; |
10916 | } | |
df8a16a1 | 10917 | |
e37fd15a SW |
10918 | if (suppress_add) |
10919 | { | |
10920 | sym->hash_next = objfile->template_symbols; | |
10921 | objfile->template_symbols = sym; | |
10922 | list_to_add = NULL; | |
10923 | } | |
10924 | ||
10925 | if (list_to_add != NULL) | |
10926 | add_symbol_to_list (sym, list_to_add); | |
10927 | ||
df8a16a1 DJ |
10928 | /* For the benefit of old versions of GCC, check for anonymous |
10929 | namespaces based on the demangled name. */ | |
10930 | if (!processing_has_namespace_info | |
94af9270 | 10931 | && cu->language == language_cplus) |
df8a16a1 | 10932 | cp_scan_for_anonymous_namespaces (sym); |
c906108c SS |
10933 | } |
10934 | return (sym); | |
10935 | } | |
10936 | ||
34eaf542 TT |
10937 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
10938 | ||
10939 | static struct symbol * | |
10940 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
10941 | { | |
10942 | return new_symbol_full (die, type, cu, NULL); | |
10943 | } | |
10944 | ||
98bfdba5 PA |
10945 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
10946 | zero-extend it as appropriate for the symbol's type. The DWARF | |
10947 | standard (v4) is not entirely clear about the meaning of using | |
10948 | DW_FORM_dataN for a constant with a signed type, where the type is | |
10949 | wider than the data. The conclusion of a discussion on the DWARF | |
10950 | list was that this is unspecified. We choose to always zero-extend | |
10951 | because that is the interpretation long in use by GCC. */ | |
c906108c | 10952 | |
98bfdba5 PA |
10953 | static gdb_byte * |
10954 | dwarf2_const_value_data (struct attribute *attr, struct type *type, | |
10955 | const char *name, struct obstack *obstack, | |
10956 | struct dwarf2_cu *cu, long *value, int bits) | |
c906108c | 10957 | { |
e7c27a73 | 10958 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
10959 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
10960 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
10961 | LONGEST l = DW_UNSND (attr); |
10962 | ||
10963 | if (bits < sizeof (*value) * 8) | |
10964 | { | |
10965 | l &= ((LONGEST) 1 << bits) - 1; | |
10966 | *value = l; | |
10967 | } | |
10968 | else if (bits == sizeof (*value) * 8) | |
10969 | *value = l; | |
10970 | else | |
10971 | { | |
10972 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
10973 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
10974 | return bytes; | |
10975 | } | |
10976 | ||
10977 | return NULL; | |
10978 | } | |
10979 | ||
10980 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
10981 | the value does not fit in *VALUE, set *BYTES - either already | |
10982 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
10983 | or, set *BATON, if we translated the constant to a location | |
10984 | expression. */ | |
10985 | ||
10986 | static void | |
10987 | dwarf2_const_value_attr (struct attribute *attr, struct type *type, | |
10988 | const char *name, struct obstack *obstack, | |
10989 | struct dwarf2_cu *cu, | |
10990 | long *value, gdb_byte **bytes, | |
10991 | struct dwarf2_locexpr_baton **baton) | |
10992 | { | |
10993 | struct objfile *objfile = cu->objfile; | |
10994 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 10995 | struct dwarf_block *blk; |
98bfdba5 PA |
10996 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
10997 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
10998 | ||
10999 | *value = 0; | |
11000 | *bytes = NULL; | |
11001 | *baton = NULL; | |
c906108c SS |
11002 | |
11003 | switch (attr->form) | |
11004 | { | |
11005 | case DW_FORM_addr: | |
ac56253d | 11006 | { |
ac56253d TT |
11007 | gdb_byte *data; |
11008 | ||
98bfdba5 PA |
11009 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
11010 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 11011 | cu_header->addr_size, |
98bfdba5 | 11012 | TYPE_LENGTH (type)); |
ac56253d TT |
11013 | /* Symbols of this form are reasonably rare, so we just |
11014 | piggyback on the existing location code rather than writing | |
11015 | a new implementation of symbol_computed_ops. */ | |
98bfdba5 PA |
11016 | *baton = obstack_alloc (&objfile->objfile_obstack, |
11017 | sizeof (struct dwarf2_locexpr_baton)); | |
11018 | (*baton)->per_cu = cu->per_cu; | |
11019 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 11020 | |
98bfdba5 PA |
11021 | (*baton)->size = 2 + cu_header->addr_size; |
11022 | data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size); | |
11023 | (*baton)->data = data; | |
ac56253d TT |
11024 | |
11025 | data[0] = DW_OP_addr; | |
11026 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
11027 | byte_order, DW_ADDR (attr)); | |
11028 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 11029 | } |
c906108c | 11030 | break; |
4ac36638 | 11031 | case DW_FORM_string: |
93b5768b | 11032 | case DW_FORM_strp: |
98bfdba5 PA |
11033 | /* DW_STRING is already allocated on the objfile obstack, point |
11034 | directly to it. */ | |
11035 | *bytes = (gdb_byte *) DW_STRING (attr); | |
93b5768b | 11036 | break; |
c906108c SS |
11037 | case DW_FORM_block1: |
11038 | case DW_FORM_block2: | |
11039 | case DW_FORM_block4: | |
11040 | case DW_FORM_block: | |
2dc7f7b3 | 11041 | case DW_FORM_exprloc: |
c906108c | 11042 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
11043 | if (TYPE_LENGTH (type) != blk->size) |
11044 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
11045 | TYPE_LENGTH (type)); | |
11046 | *bytes = blk->data; | |
c906108c | 11047 | break; |
2df3850c JM |
11048 | |
11049 | /* The DW_AT_const_value attributes are supposed to carry the | |
11050 | symbol's value "represented as it would be on the target | |
11051 | architecture." By the time we get here, it's already been | |
11052 | converted to host endianness, so we just need to sign- or | |
11053 | zero-extend it as appropriate. */ | |
11054 | case DW_FORM_data1: | |
98bfdba5 | 11055 | *bytes = dwarf2_const_value_data (attr, type, name, obstack, cu, value, 8); |
2df3850c | 11056 | break; |
c906108c | 11057 | case DW_FORM_data2: |
98bfdba5 | 11058 | *bytes = dwarf2_const_value_data (attr, type, name, obstack, cu, value, 16); |
2df3850c | 11059 | break; |
c906108c | 11060 | case DW_FORM_data4: |
98bfdba5 | 11061 | *bytes = dwarf2_const_value_data (attr, type, name, obstack, cu, value, 32); |
2df3850c | 11062 | break; |
c906108c | 11063 | case DW_FORM_data8: |
98bfdba5 | 11064 | *bytes = dwarf2_const_value_data (attr, type, name, obstack, cu, value, 64); |
2df3850c JM |
11065 | break; |
11066 | ||
c906108c | 11067 | case DW_FORM_sdata: |
98bfdba5 | 11068 | *value = DW_SND (attr); |
2df3850c JM |
11069 | break; |
11070 | ||
c906108c | 11071 | case DW_FORM_udata: |
98bfdba5 | 11072 | *value = DW_UNSND (attr); |
c906108c | 11073 | break; |
2df3850c | 11074 | |
c906108c | 11075 | default: |
4d3c2250 | 11076 | complaint (&symfile_complaints, |
e2e0b3e5 | 11077 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 11078 | dwarf_form_name (attr->form)); |
98bfdba5 | 11079 | *value = 0; |
c906108c SS |
11080 | break; |
11081 | } | |
11082 | } | |
11083 | ||
2df3850c | 11084 | |
98bfdba5 PA |
11085 | /* Copy constant value from an attribute to a symbol. */ |
11086 | ||
2df3850c | 11087 | static void |
98bfdba5 PA |
11088 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
11089 | struct dwarf2_cu *cu) | |
2df3850c | 11090 | { |
98bfdba5 PA |
11091 | struct objfile *objfile = cu->objfile; |
11092 | struct comp_unit_head *cu_header = &cu->header; | |
11093 | long value; | |
11094 | gdb_byte *bytes; | |
11095 | struct dwarf2_locexpr_baton *baton; | |
2df3850c | 11096 | |
98bfdba5 PA |
11097 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
11098 | SYMBOL_PRINT_NAME (sym), | |
11099 | &objfile->objfile_obstack, cu, | |
11100 | &value, &bytes, &baton); | |
2df3850c | 11101 | |
98bfdba5 PA |
11102 | if (baton != NULL) |
11103 | { | |
11104 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
11105 | SYMBOL_LOCATION_BATON (sym) = baton; | |
11106 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
11107 | } | |
11108 | else if (bytes != NULL) | |
11109 | { | |
11110 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
11111 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
11112 | } | |
11113 | else | |
11114 | { | |
11115 | SYMBOL_VALUE (sym) = value; | |
11116 | SYMBOL_CLASS (sym) = LOC_CONST; | |
11117 | } | |
2df3850c JM |
11118 | } |
11119 | ||
c906108c SS |
11120 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
11121 | ||
11122 | static struct type * | |
e7c27a73 | 11123 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11124 | { |
c906108c | 11125 | struct attribute *type_attr; |
c906108c | 11126 | |
e142c38c | 11127 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
11128 | if (!type_attr) |
11129 | { | |
11130 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 11131 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 11132 | } |
348e048f | 11133 | |
673bfd45 | 11134 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
11135 | } |
11136 | ||
b4ba55a1 JB |
11137 | /* True iff CU's producer generates GNAT Ada auxiliary information |
11138 | that allows to find parallel types through that information instead | |
11139 | of having to do expensive parallel lookups by type name. */ | |
11140 | ||
11141 | static int | |
11142 | need_gnat_info (struct dwarf2_cu *cu) | |
11143 | { | |
11144 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
11145 | of GNAT produces this auxiliary information, without any indication | |
11146 | that it is produced. Part of enhancing the FSF version of GNAT | |
11147 | to produce that information will be to put in place an indicator | |
11148 | that we can use in order to determine whether the descriptive type | |
11149 | info is available or not. One suggestion that has been made is | |
11150 | to use a new attribute, attached to the CU die. For now, assume | |
11151 | that the descriptive type info is not available. */ | |
11152 | return 0; | |
11153 | } | |
11154 | ||
b4ba55a1 JB |
11155 | /* Return the auxiliary type of the die in question using its |
11156 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
11157 | attribute is not present. */ | |
11158 | ||
11159 | static struct type * | |
11160 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
11161 | { | |
b4ba55a1 | 11162 | struct attribute *type_attr; |
b4ba55a1 JB |
11163 | |
11164 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
11165 | if (!type_attr) | |
11166 | return NULL; | |
11167 | ||
673bfd45 | 11168 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
11169 | } |
11170 | ||
11171 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
11172 | descriptive type accordingly. */ | |
11173 | ||
11174 | static void | |
11175 | set_descriptive_type (struct type *type, struct die_info *die, | |
11176 | struct dwarf2_cu *cu) | |
11177 | { | |
11178 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
11179 | ||
11180 | if (descriptive_type) | |
11181 | { | |
11182 | ALLOCATE_GNAT_AUX_TYPE (type); | |
11183 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
11184 | } | |
11185 | } | |
11186 | ||
c906108c SS |
11187 | /* Return the containing type of the die in question using its |
11188 | DW_AT_containing_type attribute. */ | |
11189 | ||
11190 | static struct type * | |
e7c27a73 | 11191 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11192 | { |
c906108c | 11193 | struct attribute *type_attr; |
c906108c | 11194 | |
e142c38c | 11195 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
11196 | if (!type_attr) |
11197 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
11198 | "[in module %s]"), cu->objfile->name); | |
11199 | ||
673bfd45 | 11200 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
11201 | } |
11202 | ||
673bfd45 DE |
11203 | /* Look up the type of DIE in CU using its type attribute ATTR. |
11204 | If there is no type substitute an error marker. */ | |
11205 | ||
c906108c | 11206 | static struct type * |
673bfd45 DE |
11207 | lookup_die_type (struct die_info *die, struct attribute *attr, |
11208 | struct dwarf2_cu *cu) | |
c906108c | 11209 | { |
f792889a DJ |
11210 | struct type *this_type; |
11211 | ||
673bfd45 DE |
11212 | /* First see if we have it cached. */ |
11213 | ||
11214 | if (is_ref_attr (attr)) | |
11215 | { | |
11216 | unsigned int offset = dwarf2_get_ref_die_offset (attr); | |
11217 | ||
11218 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
11219 | } | |
11220 | else if (attr->form == DW_FORM_sig8) | |
11221 | { | |
11222 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
11223 | struct dwarf2_cu *sig_cu; | |
11224 | unsigned int offset; | |
11225 | ||
11226 | /* sig_type will be NULL if the signatured type is missing from | |
11227 | the debug info. */ | |
11228 | if (sig_type == NULL) | |
11229 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
11230 | "at 0x%x [in module %s]"), | |
11231 | die->offset, cu->objfile->name); | |
11232 | ||
11233 | gdb_assert (sig_type->per_cu.from_debug_types); | |
11234 | offset = sig_type->offset + sig_type->type_offset; | |
11235 | this_type = get_die_type_at_offset (offset, &sig_type->per_cu); | |
11236 | } | |
11237 | else | |
11238 | { | |
11239 | dump_die_for_error (die); | |
11240 | error (_("Dwarf Error: Bad type attribute %s [in module %s]"), | |
11241 | dwarf_attr_name (attr->name), cu->objfile->name); | |
11242 | } | |
11243 | ||
11244 | /* If not cached we need to read it in. */ | |
11245 | ||
11246 | if (this_type == NULL) | |
11247 | { | |
11248 | struct die_info *type_die; | |
11249 | struct dwarf2_cu *type_cu = cu; | |
11250 | ||
11251 | type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
11252 | /* If the type is cached, we should have found it above. */ | |
11253 | gdb_assert (get_die_type (type_die, type_cu) == NULL); | |
11254 | this_type = read_type_die_1 (type_die, type_cu); | |
11255 | } | |
11256 | ||
11257 | /* If we still don't have a type use an error marker. */ | |
11258 | ||
11259 | if (this_type == NULL) | |
c906108c | 11260 | { |
b00fdb78 TT |
11261 | char *message, *saved; |
11262 | ||
11263 | /* read_type_die already issued a complaint. */ | |
11264 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
11265 | cu->objfile->name, | |
11266 | cu->header.offset, | |
11267 | die->offset); | |
11268 | saved = obstack_copy0 (&cu->objfile->objfile_obstack, | |
11269 | message, strlen (message)); | |
11270 | xfree (message); | |
11271 | ||
11272 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, cu->objfile); | |
c906108c | 11273 | } |
673bfd45 | 11274 | |
f792889a | 11275 | return this_type; |
c906108c SS |
11276 | } |
11277 | ||
673bfd45 DE |
11278 | /* Return the type in DIE, CU. |
11279 | Returns NULL for invalid types. | |
11280 | ||
11281 | This first does a lookup in the appropriate type_hash table, | |
11282 | and only reads the die in if necessary. | |
11283 | ||
11284 | NOTE: This can be called when reading in partial or full symbols. */ | |
11285 | ||
f792889a | 11286 | static struct type * |
e7c27a73 | 11287 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11288 | { |
f792889a DJ |
11289 | struct type *this_type; |
11290 | ||
11291 | this_type = get_die_type (die, cu); | |
11292 | if (this_type) | |
11293 | return this_type; | |
11294 | ||
673bfd45 DE |
11295 | return read_type_die_1 (die, cu); |
11296 | } | |
11297 | ||
11298 | /* Read the type in DIE, CU. | |
11299 | Returns NULL for invalid types. */ | |
11300 | ||
11301 | static struct type * | |
11302 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
11303 | { | |
11304 | struct type *this_type = NULL; | |
11305 | ||
c906108c SS |
11306 | switch (die->tag) |
11307 | { | |
11308 | case DW_TAG_class_type: | |
680b30c7 | 11309 | case DW_TAG_interface_type: |
c906108c SS |
11310 | case DW_TAG_structure_type: |
11311 | case DW_TAG_union_type: | |
f792889a | 11312 | this_type = read_structure_type (die, cu); |
c906108c SS |
11313 | break; |
11314 | case DW_TAG_enumeration_type: | |
f792889a | 11315 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
11316 | break; |
11317 | case DW_TAG_subprogram: | |
11318 | case DW_TAG_subroutine_type: | |
edb3359d | 11319 | case DW_TAG_inlined_subroutine: |
f792889a | 11320 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
11321 | break; |
11322 | case DW_TAG_array_type: | |
f792889a | 11323 | this_type = read_array_type (die, cu); |
c906108c | 11324 | break; |
72019c9c | 11325 | case DW_TAG_set_type: |
f792889a | 11326 | this_type = read_set_type (die, cu); |
72019c9c | 11327 | break; |
c906108c | 11328 | case DW_TAG_pointer_type: |
f792889a | 11329 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
11330 | break; |
11331 | case DW_TAG_ptr_to_member_type: | |
f792889a | 11332 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
11333 | break; |
11334 | case DW_TAG_reference_type: | |
f792889a | 11335 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
11336 | break; |
11337 | case DW_TAG_const_type: | |
f792889a | 11338 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
11339 | break; |
11340 | case DW_TAG_volatile_type: | |
f792889a | 11341 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
11342 | break; |
11343 | case DW_TAG_string_type: | |
f792889a | 11344 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
11345 | break; |
11346 | case DW_TAG_typedef: | |
f792889a | 11347 | this_type = read_typedef (die, cu); |
c906108c | 11348 | break; |
a02abb62 | 11349 | case DW_TAG_subrange_type: |
f792889a | 11350 | this_type = read_subrange_type (die, cu); |
a02abb62 | 11351 | break; |
c906108c | 11352 | case DW_TAG_base_type: |
f792889a | 11353 | this_type = read_base_type (die, cu); |
c906108c | 11354 | break; |
81a17f79 | 11355 | case DW_TAG_unspecified_type: |
f792889a | 11356 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 11357 | break; |
0114d602 DJ |
11358 | case DW_TAG_namespace: |
11359 | this_type = read_namespace_type (die, cu); | |
11360 | break; | |
f55ee35c JK |
11361 | case DW_TAG_module: |
11362 | this_type = read_module_type (die, cu); | |
11363 | break; | |
c906108c | 11364 | default: |
a1f5b845 | 11365 | complaint (&symfile_complaints, _("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 11366 | dwarf_tag_name (die->tag)); |
c906108c SS |
11367 | break; |
11368 | } | |
63d06c5c | 11369 | |
f792889a | 11370 | return this_type; |
63d06c5c DC |
11371 | } |
11372 | ||
abc72ce4 DE |
11373 | /* See if we can figure out if the class lives in a namespace. We do |
11374 | this by looking for a member function; its demangled name will | |
11375 | contain namespace info, if there is any. | |
11376 | Return the computed name or NULL. | |
11377 | Space for the result is allocated on the objfile's obstack. | |
11378 | This is the full-die version of guess_partial_die_structure_name. | |
11379 | In this case we know DIE has no useful parent. */ | |
11380 | ||
11381 | static char * | |
11382 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
11383 | { | |
11384 | struct die_info *spec_die; | |
11385 | struct dwarf2_cu *spec_cu; | |
11386 | struct die_info *child; | |
11387 | ||
11388 | spec_cu = cu; | |
11389 | spec_die = die_specification (die, &spec_cu); | |
11390 | if (spec_die != NULL) | |
11391 | { | |
11392 | die = spec_die; | |
11393 | cu = spec_cu; | |
11394 | } | |
11395 | ||
11396 | for (child = die->child; | |
11397 | child != NULL; | |
11398 | child = child->sibling) | |
11399 | { | |
11400 | if (child->tag == DW_TAG_subprogram) | |
11401 | { | |
11402 | struct attribute *attr; | |
11403 | ||
11404 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
11405 | if (attr == NULL) | |
11406 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
11407 | if (attr != NULL) | |
11408 | { | |
11409 | char *actual_name | |
11410 | = language_class_name_from_physname (cu->language_defn, | |
11411 | DW_STRING (attr)); | |
11412 | char *name = NULL; | |
11413 | ||
11414 | if (actual_name != NULL) | |
11415 | { | |
11416 | char *die_name = dwarf2_name (die, cu); | |
11417 | ||
11418 | if (die_name != NULL | |
11419 | && strcmp (die_name, actual_name) != 0) | |
11420 | { | |
11421 | /* Strip off the class name from the full name. | |
11422 | We want the prefix. */ | |
11423 | int die_name_len = strlen (die_name); | |
11424 | int actual_name_len = strlen (actual_name); | |
11425 | ||
11426 | /* Test for '::' as a sanity check. */ | |
11427 | if (actual_name_len > die_name_len + 2 | |
11428 | && actual_name[actual_name_len - die_name_len - 1] == ':') | |
11429 | name = | |
11430 | obsavestring (actual_name, | |
11431 | actual_name_len - die_name_len - 2, | |
11432 | &cu->objfile->objfile_obstack); | |
11433 | } | |
11434 | } | |
11435 | xfree (actual_name); | |
11436 | return name; | |
11437 | } | |
11438 | } | |
11439 | } | |
11440 | ||
11441 | return NULL; | |
11442 | } | |
11443 | ||
fdde2d81 | 11444 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 11445 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 11446 | |
0114d602 DJ |
11447 | For example, if we're within the method foo() in the following |
11448 | code: | |
11449 | ||
11450 | namespace N { | |
11451 | class C { | |
11452 | void foo () { | |
11453 | } | |
11454 | }; | |
11455 | } | |
11456 | ||
11457 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 DC |
11458 | |
11459 | static char * | |
e142c38c | 11460 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 11461 | { |
0114d602 DJ |
11462 | struct die_info *parent, *spec_die; |
11463 | struct dwarf2_cu *spec_cu; | |
11464 | struct type *parent_type; | |
63d06c5c | 11465 | |
f55ee35c JK |
11466 | if (cu->language != language_cplus && cu->language != language_java |
11467 | && cu->language != language_fortran) | |
0114d602 DJ |
11468 | return ""; |
11469 | ||
11470 | /* We have to be careful in the presence of DW_AT_specification. | |
11471 | For example, with GCC 3.4, given the code | |
11472 | ||
11473 | namespace N { | |
11474 | void foo() { | |
11475 | // Definition of N::foo. | |
11476 | } | |
11477 | } | |
11478 | ||
11479 | then we'll have a tree of DIEs like this: | |
11480 | ||
11481 | 1: DW_TAG_compile_unit | |
11482 | 2: DW_TAG_namespace // N | |
11483 | 3: DW_TAG_subprogram // declaration of N::foo | |
11484 | 4: DW_TAG_subprogram // definition of N::foo | |
11485 | DW_AT_specification // refers to die #3 | |
11486 | ||
11487 | Thus, when processing die #4, we have to pretend that we're in | |
11488 | the context of its DW_AT_specification, namely the contex of die | |
11489 | #3. */ | |
11490 | spec_cu = cu; | |
11491 | spec_die = die_specification (die, &spec_cu); | |
11492 | if (spec_die == NULL) | |
11493 | parent = die->parent; | |
11494 | else | |
63d06c5c | 11495 | { |
0114d602 DJ |
11496 | parent = spec_die->parent; |
11497 | cu = spec_cu; | |
63d06c5c | 11498 | } |
0114d602 DJ |
11499 | |
11500 | if (parent == NULL) | |
11501 | return ""; | |
98bfdba5 PA |
11502 | else if (parent->building_fullname) |
11503 | { | |
11504 | const char *name; | |
11505 | const char *parent_name; | |
11506 | ||
11507 | /* It has been seen on RealView 2.2 built binaries, | |
11508 | DW_TAG_template_type_param types actually _defined_ as | |
11509 | children of the parent class: | |
11510 | ||
11511 | enum E {}; | |
11512 | template class <class Enum> Class{}; | |
11513 | Class<enum E> class_e; | |
11514 | ||
11515 | 1: DW_TAG_class_type (Class) | |
11516 | 2: DW_TAG_enumeration_type (E) | |
11517 | 3: DW_TAG_enumerator (enum1:0) | |
11518 | 3: DW_TAG_enumerator (enum2:1) | |
11519 | ... | |
11520 | 2: DW_TAG_template_type_param | |
11521 | DW_AT_type DW_FORM_ref_udata (E) | |
11522 | ||
11523 | Besides being broken debug info, it can put GDB into an | |
11524 | infinite loop. Consider: | |
11525 | ||
11526 | When we're building the full name for Class<E>, we'll start | |
11527 | at Class, and go look over its template type parameters, | |
11528 | finding E. We'll then try to build the full name of E, and | |
11529 | reach here. We're now trying to build the full name of E, | |
11530 | and look over the parent DIE for containing scope. In the | |
11531 | broken case, if we followed the parent DIE of E, we'd again | |
11532 | find Class, and once again go look at its template type | |
11533 | arguments, etc., etc. Simply don't consider such parent die | |
11534 | as source-level parent of this die (it can't be, the language | |
11535 | doesn't allow it), and break the loop here. */ | |
11536 | name = dwarf2_name (die, cu); | |
11537 | parent_name = dwarf2_name (parent, cu); | |
11538 | complaint (&symfile_complaints, | |
11539 | _("template param type '%s' defined within parent '%s'"), | |
11540 | name ? name : "<unknown>", | |
11541 | parent_name ? parent_name : "<unknown>"); | |
11542 | return ""; | |
11543 | } | |
63d06c5c | 11544 | else |
0114d602 DJ |
11545 | switch (parent->tag) |
11546 | { | |
63d06c5c | 11547 | case DW_TAG_namespace: |
0114d602 | 11548 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
11549 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
11550 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
11551 | Work around this problem here. */ | |
11552 | if (cu->language == language_cplus | |
11553 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
11554 | return ""; | |
0114d602 DJ |
11555 | /* We give a name to even anonymous namespaces. */ |
11556 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 11557 | case DW_TAG_class_type: |
680b30c7 | 11558 | case DW_TAG_interface_type: |
63d06c5c | 11559 | case DW_TAG_structure_type: |
0114d602 | 11560 | case DW_TAG_union_type: |
f55ee35c | 11561 | case DW_TAG_module: |
0114d602 DJ |
11562 | parent_type = read_type_die (parent, cu); |
11563 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
11564 | return TYPE_TAG_NAME (parent_type); | |
11565 | else | |
11566 | /* An anonymous structure is only allowed non-static data | |
11567 | members; no typedefs, no member functions, et cetera. | |
11568 | So it does not need a prefix. */ | |
11569 | return ""; | |
abc72ce4 DE |
11570 | case DW_TAG_compile_unit: |
11571 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ | |
11572 | if (cu->language == language_cplus | |
11573 | && dwarf2_per_objfile->types.asection != NULL | |
11574 | && die->child != NULL | |
11575 | && (die->tag == DW_TAG_class_type | |
11576 | || die->tag == DW_TAG_structure_type | |
11577 | || die->tag == DW_TAG_union_type)) | |
11578 | { | |
11579 | char *name = guess_full_die_structure_name (die, cu); | |
11580 | if (name != NULL) | |
11581 | return name; | |
11582 | } | |
11583 | return ""; | |
63d06c5c | 11584 | default: |
8176b9b8 | 11585 | return determine_prefix (parent, cu); |
63d06c5c | 11586 | } |
63d06c5c DC |
11587 | } |
11588 | ||
987504bb JJ |
11589 | /* Return a newly-allocated string formed by concatenating PREFIX and |
11590 | SUFFIX with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
11591 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, | |
11592 | perform an obconcat, otherwise allocate storage for the result. The CU argument | |
11593 | is used to determine the language and hence, the appropriate separator. */ | |
11594 | ||
f55ee35c | 11595 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
11596 | |
11597 | static char * | |
f55ee35c JK |
11598 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
11599 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 11600 | { |
f55ee35c | 11601 | const char *lead = ""; |
5c315b68 | 11602 | const char *sep; |
63d06c5c | 11603 | |
987504bb JJ |
11604 | if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0') |
11605 | sep = ""; | |
11606 | else if (cu->language == language_java) | |
11607 | sep = "."; | |
f55ee35c JK |
11608 | else if (cu->language == language_fortran && physname) |
11609 | { | |
11610 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
11611 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
11612 | ||
11613 | lead = "__"; | |
11614 | sep = "_MOD_"; | |
11615 | } | |
987504bb JJ |
11616 | else |
11617 | sep = "::"; | |
63d06c5c | 11618 | |
6dd47d34 DE |
11619 | if (prefix == NULL) |
11620 | prefix = ""; | |
11621 | if (suffix == NULL) | |
11622 | suffix = ""; | |
11623 | ||
987504bb JJ |
11624 | if (obs == NULL) |
11625 | { | |
11626 | char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 11627 | |
f55ee35c JK |
11628 | strcpy (retval, lead); |
11629 | strcat (retval, prefix); | |
6dd47d34 DE |
11630 | strcat (retval, sep); |
11631 | strcat (retval, suffix); | |
63d06c5c DC |
11632 | return retval; |
11633 | } | |
987504bb JJ |
11634 | else |
11635 | { | |
11636 | /* We have an obstack. */ | |
f55ee35c | 11637 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 11638 | } |
63d06c5c DC |
11639 | } |
11640 | ||
c906108c SS |
11641 | /* Return sibling of die, NULL if no sibling. */ |
11642 | ||
f9aca02d | 11643 | static struct die_info * |
fba45db2 | 11644 | sibling_die (struct die_info *die) |
c906108c | 11645 | { |
639d11d3 | 11646 | return die->sibling; |
c906108c SS |
11647 | } |
11648 | ||
71c25dea TT |
11649 | /* Get name of a die, return NULL if not found. */ |
11650 | ||
11651 | static char * | |
11652 | dwarf2_canonicalize_name (char *name, struct dwarf2_cu *cu, | |
11653 | struct obstack *obstack) | |
11654 | { | |
11655 | if (name && cu->language == language_cplus) | |
11656 | { | |
11657 | char *canon_name = cp_canonicalize_string (name); | |
11658 | ||
11659 | if (canon_name != NULL) | |
11660 | { | |
11661 | if (strcmp (canon_name, name) != 0) | |
11662 | name = obsavestring (canon_name, strlen (canon_name), | |
11663 | obstack); | |
11664 | xfree (canon_name); | |
11665 | } | |
11666 | } | |
11667 | ||
11668 | return name; | |
c906108c SS |
11669 | } |
11670 | ||
9219021c DC |
11671 | /* Get name of a die, return NULL if not found. */ |
11672 | ||
11673 | static char * | |
e142c38c | 11674 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
11675 | { |
11676 | struct attribute *attr; | |
11677 | ||
e142c38c | 11678 | attr = dwarf2_attr (die, DW_AT_name, cu); |
71c25dea TT |
11679 | if (!attr || !DW_STRING (attr)) |
11680 | return NULL; | |
11681 | ||
11682 | switch (die->tag) | |
11683 | { | |
11684 | case DW_TAG_compile_unit: | |
11685 | /* Compilation units have a DW_AT_name that is a filename, not | |
11686 | a source language identifier. */ | |
11687 | case DW_TAG_enumeration_type: | |
11688 | case DW_TAG_enumerator: | |
11689 | /* These tags always have simple identifiers already; no need | |
11690 | to canonicalize them. */ | |
11691 | return DW_STRING (attr); | |
907af001 | 11692 | |
418835cc KS |
11693 | case DW_TAG_subprogram: |
11694 | /* Java constructors will all be named "<init>", so return | |
11695 | the class name when we see this special case. */ | |
11696 | if (cu->language == language_java | |
11697 | && DW_STRING (attr) != NULL | |
11698 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
11699 | { | |
11700 | struct dwarf2_cu *spec_cu = cu; | |
11701 | struct die_info *spec_die; | |
11702 | ||
11703 | /* GCJ will output '<init>' for Java constructor names. | |
11704 | For this special case, return the name of the parent class. */ | |
11705 | ||
11706 | /* GCJ may output suprogram DIEs with AT_specification set. | |
11707 | If so, use the name of the specified DIE. */ | |
11708 | spec_die = die_specification (die, &spec_cu); | |
11709 | if (spec_die != NULL) | |
11710 | return dwarf2_name (spec_die, spec_cu); | |
11711 | ||
11712 | do | |
11713 | { | |
11714 | die = die->parent; | |
11715 | if (die->tag == DW_TAG_class_type) | |
11716 | return dwarf2_name (die, cu); | |
11717 | } | |
11718 | while (die->tag != DW_TAG_compile_unit); | |
11719 | } | |
907af001 UW |
11720 | break; |
11721 | ||
11722 | case DW_TAG_class_type: | |
11723 | case DW_TAG_interface_type: | |
11724 | case DW_TAG_structure_type: | |
11725 | case DW_TAG_union_type: | |
11726 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
11727 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
11728 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
11729 | and GCC 4.4. We work around this problem by ignoring these. */ | |
11730 | if (strncmp (DW_STRING (attr), "._", 2) == 0 | |
11731 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0) | |
11732 | return NULL; | |
11733 | break; | |
11734 | ||
71c25dea | 11735 | default: |
907af001 UW |
11736 | break; |
11737 | } | |
11738 | ||
11739 | if (!DW_STRING_IS_CANONICAL (attr)) | |
11740 | { | |
11741 | DW_STRING (attr) | |
11742 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
11743 | &cu->objfile->objfile_obstack); | |
11744 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 11745 | } |
907af001 | 11746 | return DW_STRING (attr); |
9219021c DC |
11747 | } |
11748 | ||
11749 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
11750 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
11751 | containing the return value on output. */ | |
9219021c DC |
11752 | |
11753 | static struct die_info * | |
f2f0e013 | 11754 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
11755 | { |
11756 | struct attribute *attr; | |
9219021c | 11757 | |
f2f0e013 | 11758 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
11759 | if (attr == NULL) |
11760 | return NULL; | |
11761 | ||
f2f0e013 | 11762 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
11763 | } |
11764 | ||
c906108c SS |
11765 | /* Convert a DIE tag into its string name. */ |
11766 | ||
11767 | static char * | |
aa1ee363 | 11768 | dwarf_tag_name (unsigned tag) |
c906108c SS |
11769 | { |
11770 | switch (tag) | |
11771 | { | |
11772 | case DW_TAG_padding: | |
11773 | return "DW_TAG_padding"; | |
11774 | case DW_TAG_array_type: | |
11775 | return "DW_TAG_array_type"; | |
11776 | case DW_TAG_class_type: | |
11777 | return "DW_TAG_class_type"; | |
11778 | case DW_TAG_entry_point: | |
11779 | return "DW_TAG_entry_point"; | |
11780 | case DW_TAG_enumeration_type: | |
11781 | return "DW_TAG_enumeration_type"; | |
11782 | case DW_TAG_formal_parameter: | |
11783 | return "DW_TAG_formal_parameter"; | |
11784 | case DW_TAG_imported_declaration: | |
11785 | return "DW_TAG_imported_declaration"; | |
11786 | case DW_TAG_label: | |
11787 | return "DW_TAG_label"; | |
11788 | case DW_TAG_lexical_block: | |
11789 | return "DW_TAG_lexical_block"; | |
11790 | case DW_TAG_member: | |
11791 | return "DW_TAG_member"; | |
11792 | case DW_TAG_pointer_type: | |
11793 | return "DW_TAG_pointer_type"; | |
11794 | case DW_TAG_reference_type: | |
11795 | return "DW_TAG_reference_type"; | |
11796 | case DW_TAG_compile_unit: | |
11797 | return "DW_TAG_compile_unit"; | |
11798 | case DW_TAG_string_type: | |
11799 | return "DW_TAG_string_type"; | |
11800 | case DW_TAG_structure_type: | |
11801 | return "DW_TAG_structure_type"; | |
11802 | case DW_TAG_subroutine_type: | |
11803 | return "DW_TAG_subroutine_type"; | |
11804 | case DW_TAG_typedef: | |
11805 | return "DW_TAG_typedef"; | |
11806 | case DW_TAG_union_type: | |
11807 | return "DW_TAG_union_type"; | |
11808 | case DW_TAG_unspecified_parameters: | |
11809 | return "DW_TAG_unspecified_parameters"; | |
11810 | case DW_TAG_variant: | |
11811 | return "DW_TAG_variant"; | |
11812 | case DW_TAG_common_block: | |
11813 | return "DW_TAG_common_block"; | |
11814 | case DW_TAG_common_inclusion: | |
11815 | return "DW_TAG_common_inclusion"; | |
11816 | case DW_TAG_inheritance: | |
11817 | return "DW_TAG_inheritance"; | |
11818 | case DW_TAG_inlined_subroutine: | |
11819 | return "DW_TAG_inlined_subroutine"; | |
11820 | case DW_TAG_module: | |
11821 | return "DW_TAG_module"; | |
11822 | case DW_TAG_ptr_to_member_type: | |
11823 | return "DW_TAG_ptr_to_member_type"; | |
11824 | case DW_TAG_set_type: | |
11825 | return "DW_TAG_set_type"; | |
11826 | case DW_TAG_subrange_type: | |
11827 | return "DW_TAG_subrange_type"; | |
11828 | case DW_TAG_with_stmt: | |
11829 | return "DW_TAG_with_stmt"; | |
11830 | case DW_TAG_access_declaration: | |
11831 | return "DW_TAG_access_declaration"; | |
11832 | case DW_TAG_base_type: | |
11833 | return "DW_TAG_base_type"; | |
11834 | case DW_TAG_catch_block: | |
11835 | return "DW_TAG_catch_block"; | |
11836 | case DW_TAG_const_type: | |
11837 | return "DW_TAG_const_type"; | |
11838 | case DW_TAG_constant: | |
11839 | return "DW_TAG_constant"; | |
11840 | case DW_TAG_enumerator: | |
11841 | return "DW_TAG_enumerator"; | |
11842 | case DW_TAG_file_type: | |
11843 | return "DW_TAG_file_type"; | |
11844 | case DW_TAG_friend: | |
11845 | return "DW_TAG_friend"; | |
11846 | case DW_TAG_namelist: | |
11847 | return "DW_TAG_namelist"; | |
11848 | case DW_TAG_namelist_item: | |
11849 | return "DW_TAG_namelist_item"; | |
11850 | case DW_TAG_packed_type: | |
11851 | return "DW_TAG_packed_type"; | |
11852 | case DW_TAG_subprogram: | |
11853 | return "DW_TAG_subprogram"; | |
11854 | case DW_TAG_template_type_param: | |
11855 | return "DW_TAG_template_type_param"; | |
11856 | case DW_TAG_template_value_param: | |
11857 | return "DW_TAG_template_value_param"; | |
11858 | case DW_TAG_thrown_type: | |
11859 | return "DW_TAG_thrown_type"; | |
11860 | case DW_TAG_try_block: | |
11861 | return "DW_TAG_try_block"; | |
11862 | case DW_TAG_variant_part: | |
11863 | return "DW_TAG_variant_part"; | |
11864 | case DW_TAG_variable: | |
11865 | return "DW_TAG_variable"; | |
11866 | case DW_TAG_volatile_type: | |
11867 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
11868 | case DW_TAG_dwarf_procedure: |
11869 | return "DW_TAG_dwarf_procedure"; | |
11870 | case DW_TAG_restrict_type: | |
11871 | return "DW_TAG_restrict_type"; | |
11872 | case DW_TAG_interface_type: | |
11873 | return "DW_TAG_interface_type"; | |
11874 | case DW_TAG_namespace: | |
11875 | return "DW_TAG_namespace"; | |
11876 | case DW_TAG_imported_module: | |
11877 | return "DW_TAG_imported_module"; | |
11878 | case DW_TAG_unspecified_type: | |
11879 | return "DW_TAG_unspecified_type"; | |
11880 | case DW_TAG_partial_unit: | |
11881 | return "DW_TAG_partial_unit"; | |
11882 | case DW_TAG_imported_unit: | |
11883 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
11884 | case DW_TAG_condition: |
11885 | return "DW_TAG_condition"; | |
11886 | case DW_TAG_shared_type: | |
11887 | return "DW_TAG_shared_type"; | |
348e048f DE |
11888 | case DW_TAG_type_unit: |
11889 | return "DW_TAG_type_unit"; | |
c906108c SS |
11890 | case DW_TAG_MIPS_loop: |
11891 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
11892 | case DW_TAG_HP_array_descriptor: |
11893 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
11894 | case DW_TAG_format_label: |
11895 | return "DW_TAG_format_label"; | |
11896 | case DW_TAG_function_template: | |
11897 | return "DW_TAG_function_template"; | |
11898 | case DW_TAG_class_template: | |
11899 | return "DW_TAG_class_template"; | |
b7619582 GF |
11900 | case DW_TAG_GNU_BINCL: |
11901 | return "DW_TAG_GNU_BINCL"; | |
11902 | case DW_TAG_GNU_EINCL: | |
11903 | return "DW_TAG_GNU_EINCL"; | |
11904 | case DW_TAG_upc_shared_type: | |
11905 | return "DW_TAG_upc_shared_type"; | |
11906 | case DW_TAG_upc_strict_type: | |
11907 | return "DW_TAG_upc_strict_type"; | |
11908 | case DW_TAG_upc_relaxed_type: | |
11909 | return "DW_TAG_upc_relaxed_type"; | |
11910 | case DW_TAG_PGI_kanji_type: | |
11911 | return "DW_TAG_PGI_kanji_type"; | |
11912 | case DW_TAG_PGI_interface_block: | |
11913 | return "DW_TAG_PGI_interface_block"; | |
c906108c SS |
11914 | default: |
11915 | return "DW_TAG_<unknown>"; | |
11916 | } | |
11917 | } | |
11918 | ||
11919 | /* Convert a DWARF attribute code into its string name. */ | |
11920 | ||
11921 | static char * | |
aa1ee363 | 11922 | dwarf_attr_name (unsigned attr) |
c906108c SS |
11923 | { |
11924 | switch (attr) | |
11925 | { | |
11926 | case DW_AT_sibling: | |
11927 | return "DW_AT_sibling"; | |
11928 | case DW_AT_location: | |
11929 | return "DW_AT_location"; | |
11930 | case DW_AT_name: | |
11931 | return "DW_AT_name"; | |
11932 | case DW_AT_ordering: | |
11933 | return "DW_AT_ordering"; | |
11934 | case DW_AT_subscr_data: | |
11935 | return "DW_AT_subscr_data"; | |
11936 | case DW_AT_byte_size: | |
11937 | return "DW_AT_byte_size"; | |
11938 | case DW_AT_bit_offset: | |
11939 | return "DW_AT_bit_offset"; | |
11940 | case DW_AT_bit_size: | |
11941 | return "DW_AT_bit_size"; | |
11942 | case DW_AT_element_list: | |
11943 | return "DW_AT_element_list"; | |
11944 | case DW_AT_stmt_list: | |
11945 | return "DW_AT_stmt_list"; | |
11946 | case DW_AT_low_pc: | |
11947 | return "DW_AT_low_pc"; | |
11948 | case DW_AT_high_pc: | |
11949 | return "DW_AT_high_pc"; | |
11950 | case DW_AT_language: | |
11951 | return "DW_AT_language"; | |
11952 | case DW_AT_member: | |
11953 | return "DW_AT_member"; | |
11954 | case DW_AT_discr: | |
11955 | return "DW_AT_discr"; | |
11956 | case DW_AT_discr_value: | |
11957 | return "DW_AT_discr_value"; | |
11958 | case DW_AT_visibility: | |
11959 | return "DW_AT_visibility"; | |
11960 | case DW_AT_import: | |
11961 | return "DW_AT_import"; | |
11962 | case DW_AT_string_length: | |
11963 | return "DW_AT_string_length"; | |
11964 | case DW_AT_common_reference: | |
11965 | return "DW_AT_common_reference"; | |
11966 | case DW_AT_comp_dir: | |
11967 | return "DW_AT_comp_dir"; | |
11968 | case DW_AT_const_value: | |
11969 | return "DW_AT_const_value"; | |
11970 | case DW_AT_containing_type: | |
11971 | return "DW_AT_containing_type"; | |
11972 | case DW_AT_default_value: | |
11973 | return "DW_AT_default_value"; | |
11974 | case DW_AT_inline: | |
11975 | return "DW_AT_inline"; | |
11976 | case DW_AT_is_optional: | |
11977 | return "DW_AT_is_optional"; | |
11978 | case DW_AT_lower_bound: | |
11979 | return "DW_AT_lower_bound"; | |
11980 | case DW_AT_producer: | |
11981 | return "DW_AT_producer"; | |
11982 | case DW_AT_prototyped: | |
11983 | return "DW_AT_prototyped"; | |
11984 | case DW_AT_return_addr: | |
11985 | return "DW_AT_return_addr"; | |
11986 | case DW_AT_start_scope: | |
11987 | return "DW_AT_start_scope"; | |
09fa0d7c JK |
11988 | case DW_AT_bit_stride: |
11989 | return "DW_AT_bit_stride"; | |
c906108c SS |
11990 | case DW_AT_upper_bound: |
11991 | return "DW_AT_upper_bound"; | |
11992 | case DW_AT_abstract_origin: | |
11993 | return "DW_AT_abstract_origin"; | |
11994 | case DW_AT_accessibility: | |
11995 | return "DW_AT_accessibility"; | |
11996 | case DW_AT_address_class: | |
11997 | return "DW_AT_address_class"; | |
11998 | case DW_AT_artificial: | |
11999 | return "DW_AT_artificial"; | |
12000 | case DW_AT_base_types: | |
12001 | return "DW_AT_base_types"; | |
12002 | case DW_AT_calling_convention: | |
12003 | return "DW_AT_calling_convention"; | |
12004 | case DW_AT_count: | |
12005 | return "DW_AT_count"; | |
12006 | case DW_AT_data_member_location: | |
12007 | return "DW_AT_data_member_location"; | |
12008 | case DW_AT_decl_column: | |
12009 | return "DW_AT_decl_column"; | |
12010 | case DW_AT_decl_file: | |
12011 | return "DW_AT_decl_file"; | |
12012 | case DW_AT_decl_line: | |
12013 | return "DW_AT_decl_line"; | |
12014 | case DW_AT_declaration: | |
12015 | return "DW_AT_declaration"; | |
12016 | case DW_AT_discr_list: | |
12017 | return "DW_AT_discr_list"; | |
12018 | case DW_AT_encoding: | |
12019 | return "DW_AT_encoding"; | |
12020 | case DW_AT_external: | |
12021 | return "DW_AT_external"; | |
12022 | case DW_AT_frame_base: | |
12023 | return "DW_AT_frame_base"; | |
12024 | case DW_AT_friend: | |
12025 | return "DW_AT_friend"; | |
12026 | case DW_AT_identifier_case: | |
12027 | return "DW_AT_identifier_case"; | |
12028 | case DW_AT_macro_info: | |
12029 | return "DW_AT_macro_info"; | |
12030 | case DW_AT_namelist_items: | |
12031 | return "DW_AT_namelist_items"; | |
12032 | case DW_AT_priority: | |
12033 | return "DW_AT_priority"; | |
12034 | case DW_AT_segment: | |
12035 | return "DW_AT_segment"; | |
12036 | case DW_AT_specification: | |
12037 | return "DW_AT_specification"; | |
12038 | case DW_AT_static_link: | |
12039 | return "DW_AT_static_link"; | |
12040 | case DW_AT_type: | |
12041 | return "DW_AT_type"; | |
12042 | case DW_AT_use_location: | |
12043 | return "DW_AT_use_location"; | |
12044 | case DW_AT_variable_parameter: | |
12045 | return "DW_AT_variable_parameter"; | |
12046 | case DW_AT_virtuality: | |
12047 | return "DW_AT_virtuality"; | |
12048 | case DW_AT_vtable_elem_location: | |
12049 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 12050 | /* DWARF 3 values. */ |
d9fa45fe DC |
12051 | case DW_AT_allocated: |
12052 | return "DW_AT_allocated"; | |
12053 | case DW_AT_associated: | |
12054 | return "DW_AT_associated"; | |
12055 | case DW_AT_data_location: | |
12056 | return "DW_AT_data_location"; | |
09fa0d7c JK |
12057 | case DW_AT_byte_stride: |
12058 | return "DW_AT_byte_stride"; | |
d9fa45fe DC |
12059 | case DW_AT_entry_pc: |
12060 | return "DW_AT_entry_pc"; | |
12061 | case DW_AT_use_UTF8: | |
12062 | return "DW_AT_use_UTF8"; | |
12063 | case DW_AT_extension: | |
12064 | return "DW_AT_extension"; | |
12065 | case DW_AT_ranges: | |
12066 | return "DW_AT_ranges"; | |
12067 | case DW_AT_trampoline: | |
12068 | return "DW_AT_trampoline"; | |
12069 | case DW_AT_call_column: | |
12070 | return "DW_AT_call_column"; | |
12071 | case DW_AT_call_file: | |
12072 | return "DW_AT_call_file"; | |
12073 | case DW_AT_call_line: | |
12074 | return "DW_AT_call_line"; | |
b7619582 GF |
12075 | case DW_AT_description: |
12076 | return "DW_AT_description"; | |
12077 | case DW_AT_binary_scale: | |
12078 | return "DW_AT_binary_scale"; | |
12079 | case DW_AT_decimal_scale: | |
12080 | return "DW_AT_decimal_scale"; | |
12081 | case DW_AT_small: | |
12082 | return "DW_AT_small"; | |
12083 | case DW_AT_decimal_sign: | |
12084 | return "DW_AT_decimal_sign"; | |
12085 | case DW_AT_digit_count: | |
12086 | return "DW_AT_digit_count"; | |
12087 | case DW_AT_picture_string: | |
12088 | return "DW_AT_picture_string"; | |
12089 | case DW_AT_mutable: | |
12090 | return "DW_AT_mutable"; | |
12091 | case DW_AT_threads_scaled: | |
12092 | return "DW_AT_threads_scaled"; | |
12093 | case DW_AT_explicit: | |
12094 | return "DW_AT_explicit"; | |
12095 | case DW_AT_object_pointer: | |
12096 | return "DW_AT_object_pointer"; | |
12097 | case DW_AT_endianity: | |
12098 | return "DW_AT_endianity"; | |
12099 | case DW_AT_elemental: | |
12100 | return "DW_AT_elemental"; | |
12101 | case DW_AT_pure: | |
12102 | return "DW_AT_pure"; | |
12103 | case DW_AT_recursive: | |
12104 | return "DW_AT_recursive"; | |
348e048f DE |
12105 | /* DWARF 4 values. */ |
12106 | case DW_AT_signature: | |
12107 | return "DW_AT_signature"; | |
31ef98ae TT |
12108 | case DW_AT_linkage_name: |
12109 | return "DW_AT_linkage_name"; | |
b7619582 | 12110 | /* SGI/MIPS extensions. */ |
c764a876 | 12111 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
c906108c SS |
12112 | case DW_AT_MIPS_fde: |
12113 | return "DW_AT_MIPS_fde"; | |
c764a876 | 12114 | #endif |
c906108c SS |
12115 | case DW_AT_MIPS_loop_begin: |
12116 | return "DW_AT_MIPS_loop_begin"; | |
12117 | case DW_AT_MIPS_tail_loop_begin: | |
12118 | return "DW_AT_MIPS_tail_loop_begin"; | |
12119 | case DW_AT_MIPS_epilog_begin: | |
12120 | return "DW_AT_MIPS_epilog_begin"; | |
12121 | case DW_AT_MIPS_loop_unroll_factor: | |
12122 | return "DW_AT_MIPS_loop_unroll_factor"; | |
12123 | case DW_AT_MIPS_software_pipeline_depth: | |
12124 | return "DW_AT_MIPS_software_pipeline_depth"; | |
12125 | case DW_AT_MIPS_linkage_name: | |
12126 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
12127 | case DW_AT_MIPS_stride: |
12128 | return "DW_AT_MIPS_stride"; | |
12129 | case DW_AT_MIPS_abstract_name: | |
12130 | return "DW_AT_MIPS_abstract_name"; | |
12131 | case DW_AT_MIPS_clone_origin: | |
12132 | return "DW_AT_MIPS_clone_origin"; | |
12133 | case DW_AT_MIPS_has_inlines: | |
12134 | return "DW_AT_MIPS_has_inlines"; | |
b7619582 | 12135 | /* HP extensions. */ |
c764a876 | 12136 | #ifndef MIPS /* collides with DW_AT_MIPS_fde */ |
b7619582 GF |
12137 | case DW_AT_HP_block_index: |
12138 | return "DW_AT_HP_block_index"; | |
c764a876 | 12139 | #endif |
b7619582 GF |
12140 | case DW_AT_HP_unmodifiable: |
12141 | return "DW_AT_HP_unmodifiable"; | |
12142 | case DW_AT_HP_actuals_stmt_list: | |
12143 | return "DW_AT_HP_actuals_stmt_list"; | |
12144 | case DW_AT_HP_proc_per_section: | |
12145 | return "DW_AT_HP_proc_per_section"; | |
12146 | case DW_AT_HP_raw_data_ptr: | |
12147 | return "DW_AT_HP_raw_data_ptr"; | |
12148 | case DW_AT_HP_pass_by_reference: | |
12149 | return "DW_AT_HP_pass_by_reference"; | |
12150 | case DW_AT_HP_opt_level: | |
12151 | return "DW_AT_HP_opt_level"; | |
12152 | case DW_AT_HP_prof_version_id: | |
12153 | return "DW_AT_HP_prof_version_id"; | |
12154 | case DW_AT_HP_opt_flags: | |
12155 | return "DW_AT_HP_opt_flags"; | |
12156 | case DW_AT_HP_cold_region_low_pc: | |
12157 | return "DW_AT_HP_cold_region_low_pc"; | |
12158 | case DW_AT_HP_cold_region_high_pc: | |
12159 | return "DW_AT_HP_cold_region_high_pc"; | |
12160 | case DW_AT_HP_all_variables_modifiable: | |
12161 | return "DW_AT_HP_all_variables_modifiable"; | |
12162 | case DW_AT_HP_linkage_name: | |
12163 | return "DW_AT_HP_linkage_name"; | |
12164 | case DW_AT_HP_prof_flags: | |
12165 | return "DW_AT_HP_prof_flags"; | |
12166 | /* GNU extensions. */ | |
c906108c SS |
12167 | case DW_AT_sf_names: |
12168 | return "DW_AT_sf_names"; | |
12169 | case DW_AT_src_info: | |
12170 | return "DW_AT_src_info"; | |
12171 | case DW_AT_mac_info: | |
12172 | return "DW_AT_mac_info"; | |
12173 | case DW_AT_src_coords: | |
12174 | return "DW_AT_src_coords"; | |
12175 | case DW_AT_body_begin: | |
12176 | return "DW_AT_body_begin"; | |
12177 | case DW_AT_body_end: | |
12178 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
12179 | case DW_AT_GNU_vector: |
12180 | return "DW_AT_GNU_vector"; | |
2de00c64 DE |
12181 | case DW_AT_GNU_odr_signature: |
12182 | return "DW_AT_GNU_odr_signature"; | |
b7619582 GF |
12183 | /* VMS extensions. */ |
12184 | case DW_AT_VMS_rtnbeg_pd_address: | |
12185 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
12186 | /* UPC extension. */ | |
12187 | case DW_AT_upc_threads_scaled: | |
12188 | return "DW_AT_upc_threads_scaled"; | |
12189 | /* PGI (STMicroelectronics) extensions. */ | |
12190 | case DW_AT_PGI_lbase: | |
12191 | return "DW_AT_PGI_lbase"; | |
12192 | case DW_AT_PGI_soffset: | |
12193 | return "DW_AT_PGI_soffset"; | |
12194 | case DW_AT_PGI_lstride: | |
12195 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
12196 | default: |
12197 | return "DW_AT_<unknown>"; | |
12198 | } | |
12199 | } | |
12200 | ||
12201 | /* Convert a DWARF value form code into its string name. */ | |
12202 | ||
12203 | static char * | |
aa1ee363 | 12204 | dwarf_form_name (unsigned form) |
c906108c SS |
12205 | { |
12206 | switch (form) | |
12207 | { | |
12208 | case DW_FORM_addr: | |
12209 | return "DW_FORM_addr"; | |
12210 | case DW_FORM_block2: | |
12211 | return "DW_FORM_block2"; | |
12212 | case DW_FORM_block4: | |
12213 | return "DW_FORM_block4"; | |
12214 | case DW_FORM_data2: | |
12215 | return "DW_FORM_data2"; | |
12216 | case DW_FORM_data4: | |
12217 | return "DW_FORM_data4"; | |
12218 | case DW_FORM_data8: | |
12219 | return "DW_FORM_data8"; | |
12220 | case DW_FORM_string: | |
12221 | return "DW_FORM_string"; | |
12222 | case DW_FORM_block: | |
12223 | return "DW_FORM_block"; | |
12224 | case DW_FORM_block1: | |
12225 | return "DW_FORM_block1"; | |
12226 | case DW_FORM_data1: | |
12227 | return "DW_FORM_data1"; | |
12228 | case DW_FORM_flag: | |
12229 | return "DW_FORM_flag"; | |
12230 | case DW_FORM_sdata: | |
12231 | return "DW_FORM_sdata"; | |
12232 | case DW_FORM_strp: | |
12233 | return "DW_FORM_strp"; | |
12234 | case DW_FORM_udata: | |
12235 | return "DW_FORM_udata"; | |
12236 | case DW_FORM_ref_addr: | |
12237 | return "DW_FORM_ref_addr"; | |
12238 | case DW_FORM_ref1: | |
12239 | return "DW_FORM_ref1"; | |
12240 | case DW_FORM_ref2: | |
12241 | return "DW_FORM_ref2"; | |
12242 | case DW_FORM_ref4: | |
12243 | return "DW_FORM_ref4"; | |
12244 | case DW_FORM_ref8: | |
12245 | return "DW_FORM_ref8"; | |
12246 | case DW_FORM_ref_udata: | |
12247 | return "DW_FORM_ref_udata"; | |
12248 | case DW_FORM_indirect: | |
12249 | return "DW_FORM_indirect"; | |
348e048f DE |
12250 | case DW_FORM_sec_offset: |
12251 | return "DW_FORM_sec_offset"; | |
12252 | case DW_FORM_exprloc: | |
12253 | return "DW_FORM_exprloc"; | |
12254 | case DW_FORM_flag_present: | |
12255 | return "DW_FORM_flag_present"; | |
12256 | case DW_FORM_sig8: | |
12257 | return "DW_FORM_sig8"; | |
c906108c SS |
12258 | default: |
12259 | return "DW_FORM_<unknown>"; | |
12260 | } | |
12261 | } | |
12262 | ||
12263 | /* Convert a DWARF stack opcode into its string name. */ | |
12264 | ||
9eae7c52 TT |
12265 | const char * |
12266 | dwarf_stack_op_name (unsigned op, int def) | |
c906108c SS |
12267 | { |
12268 | switch (op) | |
12269 | { | |
12270 | case DW_OP_addr: | |
12271 | return "DW_OP_addr"; | |
12272 | case DW_OP_deref: | |
12273 | return "DW_OP_deref"; | |
12274 | case DW_OP_const1u: | |
12275 | return "DW_OP_const1u"; | |
12276 | case DW_OP_const1s: | |
12277 | return "DW_OP_const1s"; | |
12278 | case DW_OP_const2u: | |
12279 | return "DW_OP_const2u"; | |
12280 | case DW_OP_const2s: | |
12281 | return "DW_OP_const2s"; | |
12282 | case DW_OP_const4u: | |
12283 | return "DW_OP_const4u"; | |
12284 | case DW_OP_const4s: | |
12285 | return "DW_OP_const4s"; | |
12286 | case DW_OP_const8u: | |
12287 | return "DW_OP_const8u"; | |
12288 | case DW_OP_const8s: | |
12289 | return "DW_OP_const8s"; | |
12290 | case DW_OP_constu: | |
12291 | return "DW_OP_constu"; | |
12292 | case DW_OP_consts: | |
12293 | return "DW_OP_consts"; | |
12294 | case DW_OP_dup: | |
12295 | return "DW_OP_dup"; | |
12296 | case DW_OP_drop: | |
12297 | return "DW_OP_drop"; | |
12298 | case DW_OP_over: | |
12299 | return "DW_OP_over"; | |
12300 | case DW_OP_pick: | |
12301 | return "DW_OP_pick"; | |
12302 | case DW_OP_swap: | |
12303 | return "DW_OP_swap"; | |
12304 | case DW_OP_rot: | |
12305 | return "DW_OP_rot"; | |
12306 | case DW_OP_xderef: | |
12307 | return "DW_OP_xderef"; | |
12308 | case DW_OP_abs: | |
12309 | return "DW_OP_abs"; | |
12310 | case DW_OP_and: | |
12311 | return "DW_OP_and"; | |
12312 | case DW_OP_div: | |
12313 | return "DW_OP_div"; | |
12314 | case DW_OP_minus: | |
12315 | return "DW_OP_minus"; | |
12316 | case DW_OP_mod: | |
12317 | return "DW_OP_mod"; | |
12318 | case DW_OP_mul: | |
12319 | return "DW_OP_mul"; | |
12320 | case DW_OP_neg: | |
12321 | return "DW_OP_neg"; | |
12322 | case DW_OP_not: | |
12323 | return "DW_OP_not"; | |
12324 | case DW_OP_or: | |
12325 | return "DW_OP_or"; | |
12326 | case DW_OP_plus: | |
12327 | return "DW_OP_plus"; | |
12328 | case DW_OP_plus_uconst: | |
12329 | return "DW_OP_plus_uconst"; | |
12330 | case DW_OP_shl: | |
12331 | return "DW_OP_shl"; | |
12332 | case DW_OP_shr: | |
12333 | return "DW_OP_shr"; | |
12334 | case DW_OP_shra: | |
12335 | return "DW_OP_shra"; | |
12336 | case DW_OP_xor: | |
12337 | return "DW_OP_xor"; | |
12338 | case DW_OP_bra: | |
12339 | return "DW_OP_bra"; | |
12340 | case DW_OP_eq: | |
12341 | return "DW_OP_eq"; | |
12342 | case DW_OP_ge: | |
12343 | return "DW_OP_ge"; | |
12344 | case DW_OP_gt: | |
12345 | return "DW_OP_gt"; | |
12346 | case DW_OP_le: | |
12347 | return "DW_OP_le"; | |
12348 | case DW_OP_lt: | |
12349 | return "DW_OP_lt"; | |
12350 | case DW_OP_ne: | |
12351 | return "DW_OP_ne"; | |
12352 | case DW_OP_skip: | |
12353 | return "DW_OP_skip"; | |
12354 | case DW_OP_lit0: | |
12355 | return "DW_OP_lit0"; | |
12356 | case DW_OP_lit1: | |
12357 | return "DW_OP_lit1"; | |
12358 | case DW_OP_lit2: | |
12359 | return "DW_OP_lit2"; | |
12360 | case DW_OP_lit3: | |
12361 | return "DW_OP_lit3"; | |
12362 | case DW_OP_lit4: | |
12363 | return "DW_OP_lit4"; | |
12364 | case DW_OP_lit5: | |
12365 | return "DW_OP_lit5"; | |
12366 | case DW_OP_lit6: | |
12367 | return "DW_OP_lit6"; | |
12368 | case DW_OP_lit7: | |
12369 | return "DW_OP_lit7"; | |
12370 | case DW_OP_lit8: | |
12371 | return "DW_OP_lit8"; | |
12372 | case DW_OP_lit9: | |
12373 | return "DW_OP_lit9"; | |
12374 | case DW_OP_lit10: | |
12375 | return "DW_OP_lit10"; | |
12376 | case DW_OP_lit11: | |
12377 | return "DW_OP_lit11"; | |
12378 | case DW_OP_lit12: | |
12379 | return "DW_OP_lit12"; | |
12380 | case DW_OP_lit13: | |
12381 | return "DW_OP_lit13"; | |
12382 | case DW_OP_lit14: | |
12383 | return "DW_OP_lit14"; | |
12384 | case DW_OP_lit15: | |
12385 | return "DW_OP_lit15"; | |
12386 | case DW_OP_lit16: | |
12387 | return "DW_OP_lit16"; | |
12388 | case DW_OP_lit17: | |
12389 | return "DW_OP_lit17"; | |
12390 | case DW_OP_lit18: | |
12391 | return "DW_OP_lit18"; | |
12392 | case DW_OP_lit19: | |
12393 | return "DW_OP_lit19"; | |
12394 | case DW_OP_lit20: | |
12395 | return "DW_OP_lit20"; | |
12396 | case DW_OP_lit21: | |
12397 | return "DW_OP_lit21"; | |
12398 | case DW_OP_lit22: | |
12399 | return "DW_OP_lit22"; | |
12400 | case DW_OP_lit23: | |
12401 | return "DW_OP_lit23"; | |
12402 | case DW_OP_lit24: | |
12403 | return "DW_OP_lit24"; | |
12404 | case DW_OP_lit25: | |
12405 | return "DW_OP_lit25"; | |
12406 | case DW_OP_lit26: | |
12407 | return "DW_OP_lit26"; | |
12408 | case DW_OP_lit27: | |
12409 | return "DW_OP_lit27"; | |
12410 | case DW_OP_lit28: | |
12411 | return "DW_OP_lit28"; | |
12412 | case DW_OP_lit29: | |
12413 | return "DW_OP_lit29"; | |
12414 | case DW_OP_lit30: | |
12415 | return "DW_OP_lit30"; | |
12416 | case DW_OP_lit31: | |
12417 | return "DW_OP_lit31"; | |
12418 | case DW_OP_reg0: | |
12419 | return "DW_OP_reg0"; | |
12420 | case DW_OP_reg1: | |
12421 | return "DW_OP_reg1"; | |
12422 | case DW_OP_reg2: | |
12423 | return "DW_OP_reg2"; | |
12424 | case DW_OP_reg3: | |
12425 | return "DW_OP_reg3"; | |
12426 | case DW_OP_reg4: | |
12427 | return "DW_OP_reg4"; | |
12428 | case DW_OP_reg5: | |
12429 | return "DW_OP_reg5"; | |
12430 | case DW_OP_reg6: | |
12431 | return "DW_OP_reg6"; | |
12432 | case DW_OP_reg7: | |
12433 | return "DW_OP_reg7"; | |
12434 | case DW_OP_reg8: | |
12435 | return "DW_OP_reg8"; | |
12436 | case DW_OP_reg9: | |
12437 | return "DW_OP_reg9"; | |
12438 | case DW_OP_reg10: | |
12439 | return "DW_OP_reg10"; | |
12440 | case DW_OP_reg11: | |
12441 | return "DW_OP_reg11"; | |
12442 | case DW_OP_reg12: | |
12443 | return "DW_OP_reg12"; | |
12444 | case DW_OP_reg13: | |
12445 | return "DW_OP_reg13"; | |
12446 | case DW_OP_reg14: | |
12447 | return "DW_OP_reg14"; | |
12448 | case DW_OP_reg15: | |
12449 | return "DW_OP_reg15"; | |
12450 | case DW_OP_reg16: | |
12451 | return "DW_OP_reg16"; | |
12452 | case DW_OP_reg17: | |
12453 | return "DW_OP_reg17"; | |
12454 | case DW_OP_reg18: | |
12455 | return "DW_OP_reg18"; | |
12456 | case DW_OP_reg19: | |
12457 | return "DW_OP_reg19"; | |
12458 | case DW_OP_reg20: | |
12459 | return "DW_OP_reg20"; | |
12460 | case DW_OP_reg21: | |
12461 | return "DW_OP_reg21"; | |
12462 | case DW_OP_reg22: | |
12463 | return "DW_OP_reg22"; | |
12464 | case DW_OP_reg23: | |
12465 | return "DW_OP_reg23"; | |
12466 | case DW_OP_reg24: | |
12467 | return "DW_OP_reg24"; | |
12468 | case DW_OP_reg25: | |
12469 | return "DW_OP_reg25"; | |
12470 | case DW_OP_reg26: | |
12471 | return "DW_OP_reg26"; | |
12472 | case DW_OP_reg27: | |
12473 | return "DW_OP_reg27"; | |
12474 | case DW_OP_reg28: | |
12475 | return "DW_OP_reg28"; | |
12476 | case DW_OP_reg29: | |
12477 | return "DW_OP_reg29"; | |
12478 | case DW_OP_reg30: | |
12479 | return "DW_OP_reg30"; | |
12480 | case DW_OP_reg31: | |
12481 | return "DW_OP_reg31"; | |
12482 | case DW_OP_breg0: | |
12483 | return "DW_OP_breg0"; | |
12484 | case DW_OP_breg1: | |
12485 | return "DW_OP_breg1"; | |
12486 | case DW_OP_breg2: | |
12487 | return "DW_OP_breg2"; | |
12488 | case DW_OP_breg3: | |
12489 | return "DW_OP_breg3"; | |
12490 | case DW_OP_breg4: | |
12491 | return "DW_OP_breg4"; | |
12492 | case DW_OP_breg5: | |
12493 | return "DW_OP_breg5"; | |
12494 | case DW_OP_breg6: | |
12495 | return "DW_OP_breg6"; | |
12496 | case DW_OP_breg7: | |
12497 | return "DW_OP_breg7"; | |
12498 | case DW_OP_breg8: | |
12499 | return "DW_OP_breg8"; | |
12500 | case DW_OP_breg9: | |
12501 | return "DW_OP_breg9"; | |
12502 | case DW_OP_breg10: | |
12503 | return "DW_OP_breg10"; | |
12504 | case DW_OP_breg11: | |
12505 | return "DW_OP_breg11"; | |
12506 | case DW_OP_breg12: | |
12507 | return "DW_OP_breg12"; | |
12508 | case DW_OP_breg13: | |
12509 | return "DW_OP_breg13"; | |
12510 | case DW_OP_breg14: | |
12511 | return "DW_OP_breg14"; | |
12512 | case DW_OP_breg15: | |
12513 | return "DW_OP_breg15"; | |
12514 | case DW_OP_breg16: | |
12515 | return "DW_OP_breg16"; | |
12516 | case DW_OP_breg17: | |
12517 | return "DW_OP_breg17"; | |
12518 | case DW_OP_breg18: | |
12519 | return "DW_OP_breg18"; | |
12520 | case DW_OP_breg19: | |
12521 | return "DW_OP_breg19"; | |
12522 | case DW_OP_breg20: | |
12523 | return "DW_OP_breg20"; | |
12524 | case DW_OP_breg21: | |
12525 | return "DW_OP_breg21"; | |
12526 | case DW_OP_breg22: | |
12527 | return "DW_OP_breg22"; | |
12528 | case DW_OP_breg23: | |
12529 | return "DW_OP_breg23"; | |
12530 | case DW_OP_breg24: | |
12531 | return "DW_OP_breg24"; | |
12532 | case DW_OP_breg25: | |
12533 | return "DW_OP_breg25"; | |
12534 | case DW_OP_breg26: | |
12535 | return "DW_OP_breg26"; | |
12536 | case DW_OP_breg27: | |
12537 | return "DW_OP_breg27"; | |
12538 | case DW_OP_breg28: | |
12539 | return "DW_OP_breg28"; | |
12540 | case DW_OP_breg29: | |
12541 | return "DW_OP_breg29"; | |
12542 | case DW_OP_breg30: | |
12543 | return "DW_OP_breg30"; | |
12544 | case DW_OP_breg31: | |
12545 | return "DW_OP_breg31"; | |
12546 | case DW_OP_regx: | |
12547 | return "DW_OP_regx"; | |
12548 | case DW_OP_fbreg: | |
12549 | return "DW_OP_fbreg"; | |
12550 | case DW_OP_bregx: | |
12551 | return "DW_OP_bregx"; | |
12552 | case DW_OP_piece: | |
12553 | return "DW_OP_piece"; | |
12554 | case DW_OP_deref_size: | |
12555 | return "DW_OP_deref_size"; | |
12556 | case DW_OP_xderef_size: | |
12557 | return "DW_OP_xderef_size"; | |
12558 | case DW_OP_nop: | |
12559 | return "DW_OP_nop"; | |
b7619582 | 12560 | /* DWARF 3 extensions. */ |
ed348acc EZ |
12561 | case DW_OP_push_object_address: |
12562 | return "DW_OP_push_object_address"; | |
12563 | case DW_OP_call2: | |
12564 | return "DW_OP_call2"; | |
12565 | case DW_OP_call4: | |
12566 | return "DW_OP_call4"; | |
12567 | case DW_OP_call_ref: | |
12568 | return "DW_OP_call_ref"; | |
b7619582 GF |
12569 | case DW_OP_form_tls_address: |
12570 | return "DW_OP_form_tls_address"; | |
12571 | case DW_OP_call_frame_cfa: | |
12572 | return "DW_OP_call_frame_cfa"; | |
12573 | case DW_OP_bit_piece: | |
12574 | return "DW_OP_bit_piece"; | |
9eae7c52 TT |
12575 | /* DWARF 4 extensions. */ |
12576 | case DW_OP_implicit_value: | |
12577 | return "DW_OP_implicit_value"; | |
12578 | case DW_OP_stack_value: | |
12579 | return "DW_OP_stack_value"; | |
12580 | /* GNU extensions. */ | |
ed348acc EZ |
12581 | case DW_OP_GNU_push_tls_address: |
12582 | return "DW_OP_GNU_push_tls_address"; | |
42be36b3 CT |
12583 | case DW_OP_GNU_uninit: |
12584 | return "DW_OP_GNU_uninit"; | |
c906108c | 12585 | default: |
9eae7c52 | 12586 | return def ? "OP_<unknown>" : NULL; |
c906108c SS |
12587 | } |
12588 | } | |
12589 | ||
12590 | static char * | |
fba45db2 | 12591 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
12592 | { |
12593 | if (mybool) | |
12594 | return "TRUE"; | |
12595 | else | |
12596 | return "FALSE"; | |
12597 | } | |
12598 | ||
12599 | /* Convert a DWARF type code into its string name. */ | |
12600 | ||
12601 | static char * | |
aa1ee363 | 12602 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
12603 | { |
12604 | switch (enc) | |
12605 | { | |
b7619582 GF |
12606 | case DW_ATE_void: |
12607 | return "DW_ATE_void"; | |
c906108c SS |
12608 | case DW_ATE_address: |
12609 | return "DW_ATE_address"; | |
12610 | case DW_ATE_boolean: | |
12611 | return "DW_ATE_boolean"; | |
12612 | case DW_ATE_complex_float: | |
12613 | return "DW_ATE_complex_float"; | |
12614 | case DW_ATE_float: | |
12615 | return "DW_ATE_float"; | |
12616 | case DW_ATE_signed: | |
12617 | return "DW_ATE_signed"; | |
12618 | case DW_ATE_signed_char: | |
12619 | return "DW_ATE_signed_char"; | |
12620 | case DW_ATE_unsigned: | |
12621 | return "DW_ATE_unsigned"; | |
12622 | case DW_ATE_unsigned_char: | |
12623 | return "DW_ATE_unsigned_char"; | |
b7619582 | 12624 | /* DWARF 3. */ |
d9fa45fe DC |
12625 | case DW_ATE_imaginary_float: |
12626 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
12627 | case DW_ATE_packed_decimal: |
12628 | return "DW_ATE_packed_decimal"; | |
12629 | case DW_ATE_numeric_string: | |
12630 | return "DW_ATE_numeric_string"; | |
12631 | case DW_ATE_edited: | |
12632 | return "DW_ATE_edited"; | |
12633 | case DW_ATE_signed_fixed: | |
12634 | return "DW_ATE_signed_fixed"; | |
12635 | case DW_ATE_unsigned_fixed: | |
12636 | return "DW_ATE_unsigned_fixed"; | |
12637 | case DW_ATE_decimal_float: | |
12638 | return "DW_ATE_decimal_float"; | |
75079b2b TT |
12639 | /* DWARF 4. */ |
12640 | case DW_ATE_UTF: | |
12641 | return "DW_ATE_UTF"; | |
b7619582 GF |
12642 | /* HP extensions. */ |
12643 | case DW_ATE_HP_float80: | |
12644 | return "DW_ATE_HP_float80"; | |
12645 | case DW_ATE_HP_complex_float80: | |
12646 | return "DW_ATE_HP_complex_float80"; | |
12647 | case DW_ATE_HP_float128: | |
12648 | return "DW_ATE_HP_float128"; | |
12649 | case DW_ATE_HP_complex_float128: | |
12650 | return "DW_ATE_HP_complex_float128"; | |
12651 | case DW_ATE_HP_floathpintel: | |
12652 | return "DW_ATE_HP_floathpintel"; | |
12653 | case DW_ATE_HP_imaginary_float80: | |
12654 | return "DW_ATE_HP_imaginary_float80"; | |
12655 | case DW_ATE_HP_imaginary_float128: | |
12656 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
12657 | default: |
12658 | return "DW_ATE_<unknown>"; | |
12659 | } | |
12660 | } | |
12661 | ||
12662 | /* Convert a DWARF call frame info operation to its string name. */ | |
12663 | ||
12664 | #if 0 | |
12665 | static char * | |
aa1ee363 | 12666 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
12667 | { |
12668 | switch (cfi_opc) | |
12669 | { | |
12670 | case DW_CFA_advance_loc: | |
12671 | return "DW_CFA_advance_loc"; | |
12672 | case DW_CFA_offset: | |
12673 | return "DW_CFA_offset"; | |
12674 | case DW_CFA_restore: | |
12675 | return "DW_CFA_restore"; | |
12676 | case DW_CFA_nop: | |
12677 | return "DW_CFA_nop"; | |
12678 | case DW_CFA_set_loc: | |
12679 | return "DW_CFA_set_loc"; | |
12680 | case DW_CFA_advance_loc1: | |
12681 | return "DW_CFA_advance_loc1"; | |
12682 | case DW_CFA_advance_loc2: | |
12683 | return "DW_CFA_advance_loc2"; | |
12684 | case DW_CFA_advance_loc4: | |
12685 | return "DW_CFA_advance_loc4"; | |
12686 | case DW_CFA_offset_extended: | |
12687 | return "DW_CFA_offset_extended"; | |
12688 | case DW_CFA_restore_extended: | |
12689 | return "DW_CFA_restore_extended"; | |
12690 | case DW_CFA_undefined: | |
12691 | return "DW_CFA_undefined"; | |
12692 | case DW_CFA_same_value: | |
12693 | return "DW_CFA_same_value"; | |
12694 | case DW_CFA_register: | |
12695 | return "DW_CFA_register"; | |
12696 | case DW_CFA_remember_state: | |
12697 | return "DW_CFA_remember_state"; | |
12698 | case DW_CFA_restore_state: | |
12699 | return "DW_CFA_restore_state"; | |
12700 | case DW_CFA_def_cfa: | |
12701 | return "DW_CFA_def_cfa"; | |
12702 | case DW_CFA_def_cfa_register: | |
12703 | return "DW_CFA_def_cfa_register"; | |
12704 | case DW_CFA_def_cfa_offset: | |
12705 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 12706 | /* DWARF 3. */ |
985cb1a3 JM |
12707 | case DW_CFA_def_cfa_expression: |
12708 | return "DW_CFA_def_cfa_expression"; | |
12709 | case DW_CFA_expression: | |
12710 | return "DW_CFA_expression"; | |
12711 | case DW_CFA_offset_extended_sf: | |
12712 | return "DW_CFA_offset_extended_sf"; | |
12713 | case DW_CFA_def_cfa_sf: | |
12714 | return "DW_CFA_def_cfa_sf"; | |
12715 | case DW_CFA_def_cfa_offset_sf: | |
12716 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
12717 | case DW_CFA_val_offset: |
12718 | return "DW_CFA_val_offset"; | |
12719 | case DW_CFA_val_offset_sf: | |
12720 | return "DW_CFA_val_offset_sf"; | |
12721 | case DW_CFA_val_expression: | |
12722 | return "DW_CFA_val_expression"; | |
12723 | /* SGI/MIPS specific. */ | |
c906108c SS |
12724 | case DW_CFA_MIPS_advance_loc8: |
12725 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 12726 | /* GNU extensions. */ |
985cb1a3 JM |
12727 | case DW_CFA_GNU_window_save: |
12728 | return "DW_CFA_GNU_window_save"; | |
12729 | case DW_CFA_GNU_args_size: | |
12730 | return "DW_CFA_GNU_args_size"; | |
12731 | case DW_CFA_GNU_negative_offset_extended: | |
12732 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
12733 | default: |
12734 | return "DW_CFA_<unknown>"; | |
12735 | } | |
12736 | } | |
12737 | #endif | |
12738 | ||
f9aca02d | 12739 | static void |
d97bc12b | 12740 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
12741 | { |
12742 | unsigned int i; | |
12743 | ||
d97bc12b DE |
12744 | print_spaces (indent, f); |
12745 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
c906108c | 12746 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
d97bc12b DE |
12747 | |
12748 | if (die->parent != NULL) | |
12749 | { | |
12750 | print_spaces (indent, f); | |
12751 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
12752 | die->parent->offset); | |
12753 | } | |
12754 | ||
12755 | print_spaces (indent, f); | |
12756 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 12757 | dwarf_bool_name (die->child != NULL)); |
c906108c | 12758 | |
d97bc12b DE |
12759 | print_spaces (indent, f); |
12760 | fprintf_unfiltered (f, " attributes:\n"); | |
12761 | ||
c906108c SS |
12762 | for (i = 0; i < die->num_attrs; ++i) |
12763 | { | |
d97bc12b DE |
12764 | print_spaces (indent, f); |
12765 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
12766 | dwarf_attr_name (die->attrs[i].name), |
12767 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 12768 | |
c906108c SS |
12769 | switch (die->attrs[i].form) |
12770 | { | |
12771 | case DW_FORM_ref_addr: | |
12772 | case DW_FORM_addr: | |
d97bc12b | 12773 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 12774 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
12775 | break; |
12776 | case DW_FORM_block2: | |
12777 | case DW_FORM_block4: | |
12778 | case DW_FORM_block: | |
12779 | case DW_FORM_block1: | |
d97bc12b | 12780 | fprintf_unfiltered (f, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c | 12781 | break; |
2dc7f7b3 TT |
12782 | case DW_FORM_exprloc: |
12783 | fprintf_unfiltered (f, "expression: size %u", | |
12784 | DW_BLOCK (&die->attrs[i])->size); | |
12785 | break; | |
10b3939b DJ |
12786 | case DW_FORM_ref1: |
12787 | case DW_FORM_ref2: | |
12788 | case DW_FORM_ref4: | |
d97bc12b | 12789 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
10b3939b DJ |
12790 | (long) (DW_ADDR (&die->attrs[i]))); |
12791 | break; | |
c906108c SS |
12792 | case DW_FORM_data1: |
12793 | case DW_FORM_data2: | |
12794 | case DW_FORM_data4: | |
ce5d95e1 | 12795 | case DW_FORM_data8: |
c906108c SS |
12796 | case DW_FORM_udata: |
12797 | case DW_FORM_sdata: | |
43bbcdc2 PH |
12798 | fprintf_unfiltered (f, "constant: %s", |
12799 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 12800 | break; |
2dc7f7b3 TT |
12801 | case DW_FORM_sec_offset: |
12802 | fprintf_unfiltered (f, "section offset: %s", | |
12803 | pulongest (DW_UNSND (&die->attrs[i]))); | |
12804 | break; | |
348e048f DE |
12805 | case DW_FORM_sig8: |
12806 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) | |
12807 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
12808 | DW_SIGNATURED_TYPE (&die->attrs[i])->offset); | |
12809 | else | |
12810 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
12811 | break; | |
c906108c | 12812 | case DW_FORM_string: |
4bdf3d34 | 12813 | case DW_FORM_strp: |
8285870a | 12814 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 12815 | DW_STRING (&die->attrs[i]) |
8285870a JK |
12816 | ? DW_STRING (&die->attrs[i]) : "", |
12817 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
12818 | break; |
12819 | case DW_FORM_flag: | |
12820 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 12821 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 12822 | else |
d97bc12b | 12823 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 12824 | break; |
2dc7f7b3 TT |
12825 | case DW_FORM_flag_present: |
12826 | fprintf_unfiltered (f, "flag: TRUE"); | |
12827 | break; | |
a8329558 KW |
12828 | case DW_FORM_indirect: |
12829 | /* the reader will have reduced the indirect form to | |
12830 | the "base form" so this form should not occur */ | |
d97bc12b | 12831 | fprintf_unfiltered (f, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 12832 | break; |
c906108c | 12833 | default: |
d97bc12b | 12834 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 12835 | die->attrs[i].form); |
d97bc12b | 12836 | break; |
c906108c | 12837 | } |
d97bc12b | 12838 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
12839 | } |
12840 | } | |
12841 | ||
f9aca02d | 12842 | static void |
d97bc12b | 12843 | dump_die_for_error (struct die_info *die) |
c906108c | 12844 | { |
d97bc12b DE |
12845 | dump_die_shallow (gdb_stderr, 0, die); |
12846 | } | |
12847 | ||
12848 | static void | |
12849 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
12850 | { | |
12851 | int indent = level * 4; | |
12852 | ||
12853 | gdb_assert (die != NULL); | |
12854 | ||
12855 | if (level >= max_level) | |
12856 | return; | |
12857 | ||
12858 | dump_die_shallow (f, indent, die); | |
12859 | ||
12860 | if (die->child != NULL) | |
c906108c | 12861 | { |
d97bc12b DE |
12862 | print_spaces (indent, f); |
12863 | fprintf_unfiltered (f, " Children:"); | |
12864 | if (level + 1 < max_level) | |
12865 | { | |
12866 | fprintf_unfiltered (f, "\n"); | |
12867 | dump_die_1 (f, level + 1, max_level, die->child); | |
12868 | } | |
12869 | else | |
12870 | { | |
12871 | fprintf_unfiltered (f, " [not printed, max nesting level reached]\n"); | |
12872 | } | |
12873 | } | |
12874 | ||
12875 | if (die->sibling != NULL && level > 0) | |
12876 | { | |
12877 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
12878 | } |
12879 | } | |
12880 | ||
d97bc12b DE |
12881 | /* This is called from the pdie macro in gdbinit.in. |
12882 | It's not static so gcc will keep a copy callable from gdb. */ | |
12883 | ||
12884 | void | |
12885 | dump_die (struct die_info *die, int max_level) | |
12886 | { | |
12887 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
12888 | } | |
12889 | ||
f9aca02d | 12890 | static void |
51545339 | 12891 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12892 | { |
51545339 | 12893 | void **slot; |
c906108c | 12894 | |
51545339 DJ |
12895 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset, INSERT); |
12896 | ||
12897 | *slot = die; | |
c906108c SS |
12898 | } |
12899 | ||
93311388 DE |
12900 | static int |
12901 | is_ref_attr (struct attribute *attr) | |
c906108c | 12902 | { |
c906108c SS |
12903 | switch (attr->form) |
12904 | { | |
12905 | case DW_FORM_ref_addr: | |
c906108c SS |
12906 | case DW_FORM_ref1: |
12907 | case DW_FORM_ref2: | |
12908 | case DW_FORM_ref4: | |
613e1657 | 12909 | case DW_FORM_ref8: |
c906108c | 12910 | case DW_FORM_ref_udata: |
93311388 | 12911 | return 1; |
c906108c | 12912 | default: |
93311388 | 12913 | return 0; |
c906108c | 12914 | } |
93311388 DE |
12915 | } |
12916 | ||
12917 | static unsigned int | |
12918 | dwarf2_get_ref_die_offset (struct attribute *attr) | |
12919 | { | |
12920 | if (is_ref_attr (attr)) | |
12921 | return DW_ADDR (attr); | |
12922 | ||
12923 | complaint (&symfile_complaints, | |
12924 | _("unsupported die ref attribute form: '%s'"), | |
12925 | dwarf_form_name (attr->form)); | |
12926 | return 0; | |
c906108c SS |
12927 | } |
12928 | ||
43bbcdc2 PH |
12929 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
12930 | * the value held by the attribute is not constant. */ | |
a02abb62 | 12931 | |
43bbcdc2 | 12932 | static LONGEST |
a02abb62 JB |
12933 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
12934 | { | |
12935 | if (attr->form == DW_FORM_sdata) | |
12936 | return DW_SND (attr); | |
12937 | else if (attr->form == DW_FORM_udata | |
12938 | || attr->form == DW_FORM_data1 | |
12939 | || attr->form == DW_FORM_data2 | |
12940 | || attr->form == DW_FORM_data4 | |
12941 | || attr->form == DW_FORM_data8) | |
12942 | return DW_UNSND (attr); | |
12943 | else | |
12944 | { | |
e2e0b3e5 | 12945 | complaint (&symfile_complaints, _("Attribute value is not a constant (%s)"), |
a02abb62 JB |
12946 | dwarf_form_name (attr->form)); |
12947 | return default_value; | |
12948 | } | |
12949 | } | |
12950 | ||
03dd20cc | 12951 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
348e048f DE |
12952 | unit and add it to our queue. |
12953 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
12954 | meaning either PER_CU is already queued or it is already loaded. */ | |
03dd20cc | 12955 | |
348e048f | 12956 | static int |
03dd20cc DJ |
12957 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, |
12958 | struct dwarf2_per_cu_data *per_cu) | |
12959 | { | |
98bfdba5 PA |
12960 | /* We may arrive here during partial symbol reading, if we need full |
12961 | DIEs to process an unusual case (e.g. template arguments). Do | |
12962 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
12963 | if (dwarf2_per_objfile->reading_partial_symbols) | |
12964 | { | |
12965 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
12966 | return 1; | |
12967 | return 0; | |
12968 | } | |
12969 | ||
03dd20cc DJ |
12970 | /* Mark the dependence relation so that we don't flush PER_CU |
12971 | too early. */ | |
12972 | dwarf2_add_dependence (this_cu, per_cu); | |
12973 | ||
12974 | /* If it's already on the queue, we have nothing to do. */ | |
12975 | if (per_cu->queued) | |
348e048f | 12976 | return 0; |
03dd20cc DJ |
12977 | |
12978 | /* If the compilation unit is already loaded, just mark it as | |
12979 | used. */ | |
12980 | if (per_cu->cu != NULL) | |
12981 | { | |
12982 | per_cu->cu->last_used = 0; | |
348e048f | 12983 | return 0; |
03dd20cc DJ |
12984 | } |
12985 | ||
12986 | /* Add it to the queue. */ | |
12987 | queue_comp_unit (per_cu, this_cu->objfile); | |
348e048f DE |
12988 | |
12989 | return 1; | |
12990 | } | |
12991 | ||
12992 | /* Follow reference or signature attribute ATTR of SRC_DIE. | |
12993 | On entry *REF_CU is the CU of SRC_DIE. | |
12994 | On exit *REF_CU is the CU of the result. */ | |
12995 | ||
12996 | static struct die_info * | |
12997 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
12998 | struct dwarf2_cu **ref_cu) | |
12999 | { | |
13000 | struct die_info *die; | |
13001 | ||
13002 | if (is_ref_attr (attr)) | |
13003 | die = follow_die_ref (src_die, attr, ref_cu); | |
13004 | else if (attr->form == DW_FORM_sig8) | |
13005 | die = follow_die_sig (src_die, attr, ref_cu); | |
13006 | else | |
13007 | { | |
13008 | dump_die_for_error (src_die); | |
13009 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
13010 | (*ref_cu)->objfile->name); | |
13011 | } | |
13012 | ||
13013 | return die; | |
03dd20cc DJ |
13014 | } |
13015 | ||
5c631832 | 13016 | /* Follow reference OFFSET. |
673bfd45 DE |
13017 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
13018 | On exit *REF_CU is the CU of the result. | |
13019 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 13020 | |
f9aca02d | 13021 | static struct die_info * |
5c631832 | 13022 | follow_die_offset (unsigned int offset, struct dwarf2_cu **ref_cu) |
c906108c | 13023 | { |
10b3939b | 13024 | struct die_info temp_die; |
f2f0e013 | 13025 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 13026 | |
348e048f DE |
13027 | gdb_assert (cu->per_cu != NULL); |
13028 | ||
98bfdba5 PA |
13029 | target_cu = cu; |
13030 | ||
348e048f DE |
13031 | if (cu->per_cu->from_debug_types) |
13032 | { | |
13033 | /* .debug_types CUs cannot reference anything outside their CU. | |
13034 | If they need to, they have to reference a signatured type via | |
13035 | DW_FORM_sig8. */ | |
13036 | if (! offset_in_cu_p (&cu->header, offset)) | |
5c631832 | 13037 | return NULL; |
348e048f DE |
13038 | } |
13039 | else if (! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
13040 | { |
13041 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 13042 | |
45452591 | 13043 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
13044 | |
13045 | /* If necessary, add it to the queue and load its DIEs. */ | |
348e048f DE |
13046 | if (maybe_queue_comp_unit (cu, per_cu)) |
13047 | load_full_comp_unit (per_cu, cu->objfile); | |
03dd20cc | 13048 | |
10b3939b DJ |
13049 | target_cu = per_cu->cu; |
13050 | } | |
98bfdba5 PA |
13051 | else if (cu->dies == NULL) |
13052 | { | |
13053 | /* We're loading full DIEs during partial symbol reading. */ | |
13054 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
13055 | load_full_comp_unit (cu->per_cu, cu->objfile); | |
13056 | } | |
c906108c | 13057 | |
f2f0e013 | 13058 | *ref_cu = target_cu; |
51545339 | 13059 | temp_die.offset = offset; |
5c631832 JK |
13060 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset); |
13061 | } | |
10b3939b | 13062 | |
5c631832 JK |
13063 | /* Follow reference attribute ATTR of SRC_DIE. |
13064 | On entry *REF_CU is the CU of SRC_DIE. | |
13065 | On exit *REF_CU is the CU of the result. */ | |
13066 | ||
13067 | static struct die_info * | |
13068 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
13069 | struct dwarf2_cu **ref_cu) | |
13070 | { | |
13071 | unsigned int offset = dwarf2_get_ref_die_offset (attr); | |
13072 | struct dwarf2_cu *cu = *ref_cu; | |
13073 | struct die_info *die; | |
13074 | ||
13075 | die = follow_die_offset (offset, ref_cu); | |
13076 | if (!die) | |
13077 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
13078 | "at 0x%x [in module %s]"), | |
13079 | offset, src_die->offset, cu->objfile->name); | |
348e048f | 13080 | |
5c631832 JK |
13081 | return die; |
13082 | } | |
13083 | ||
13084 | /* Return DWARF block and its CU referenced by OFFSET at PER_CU. Returned | |
13085 | value is intended for DW_OP_call*. */ | |
13086 | ||
13087 | struct dwarf2_locexpr_baton | |
13088 | dwarf2_fetch_die_location_block (unsigned int offset, | |
13089 | struct dwarf2_per_cu_data *per_cu) | |
13090 | { | |
13091 | struct dwarf2_cu *cu = per_cu->cu; | |
13092 | struct die_info *die; | |
13093 | struct attribute *attr; | |
13094 | struct dwarf2_locexpr_baton retval; | |
13095 | ||
13096 | die = follow_die_offset (offset, &cu); | |
13097 | if (!die) | |
13098 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
13099 | offset, per_cu->cu->objfile->name); | |
13100 | ||
13101 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
13102 | if (!attr) | |
13103 | { | |
13104 | /* DWARF: "If there is no such attribute, then there is no effect.". */ | |
13105 | ||
13106 | retval.data = NULL; | |
13107 | retval.size = 0; | |
13108 | } | |
13109 | else | |
13110 | { | |
13111 | if (!attr_form_is_block (attr)) | |
13112 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
13113 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
13114 | offset, per_cu->cu->objfile->name); | |
13115 | ||
13116 | retval.data = DW_BLOCK (attr)->data; | |
13117 | retval.size = DW_BLOCK (attr)->size; | |
13118 | } | |
13119 | retval.per_cu = cu->per_cu; | |
13120 | return retval; | |
348e048f DE |
13121 | } |
13122 | ||
13123 | /* Follow the signature attribute ATTR in SRC_DIE. | |
13124 | On entry *REF_CU is the CU of SRC_DIE. | |
13125 | On exit *REF_CU is the CU of the result. */ | |
13126 | ||
13127 | static struct die_info * | |
13128 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
13129 | struct dwarf2_cu **ref_cu) | |
13130 | { | |
13131 | struct objfile *objfile = (*ref_cu)->objfile; | |
13132 | struct die_info temp_die; | |
13133 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
13134 | struct dwarf2_cu *sig_cu; | |
13135 | struct die_info *die; | |
13136 | ||
13137 | /* sig_type will be NULL if the signatured type is missing from | |
13138 | the debug info. */ | |
13139 | if (sig_type == NULL) | |
13140 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
13141 | "at 0x%x [in module %s]"), | |
13142 | src_die->offset, objfile->name); | |
13143 | ||
13144 | /* If necessary, add it to the queue and load its DIEs. */ | |
13145 | ||
13146 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu)) | |
13147 | read_signatured_type (objfile, sig_type); | |
13148 | ||
13149 | gdb_assert (sig_type->per_cu.cu != NULL); | |
13150 | ||
13151 | sig_cu = sig_type->per_cu.cu; | |
13152 | temp_die.offset = sig_cu->header.offset + sig_type->type_offset; | |
13153 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, temp_die.offset); | |
13154 | if (die) | |
13155 | { | |
13156 | *ref_cu = sig_cu; | |
13157 | return die; | |
13158 | } | |
13159 | ||
13160 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced from DIE " | |
13161 | "at 0x%x [in module %s]"), | |
13162 | sig_type->type_offset, src_die->offset, objfile->name); | |
13163 | } | |
13164 | ||
13165 | /* Given an offset of a signatured type, return its signatured_type. */ | |
13166 | ||
13167 | static struct signatured_type * | |
13168 | lookup_signatured_type_at_offset (struct objfile *objfile, unsigned int offset) | |
13169 | { | |
13170 | gdb_byte *info_ptr = dwarf2_per_objfile->types.buffer + offset; | |
13171 | unsigned int length, initial_length_size; | |
13172 | unsigned int sig_offset; | |
13173 | struct signatured_type find_entry, *type_sig; | |
13174 | ||
13175 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
13176 | sig_offset = (initial_length_size | |
13177 | + 2 /*version*/ | |
13178 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
13179 | + 1 /*address_size*/); | |
13180 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
13181 | type_sig = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
13182 | ||
13183 | /* This is only used to lookup previously recorded types. | |
13184 | If we didn't find it, it's our bug. */ | |
13185 | gdb_assert (type_sig != NULL); | |
13186 | gdb_assert (offset == type_sig->offset); | |
13187 | ||
13188 | return type_sig; | |
13189 | } | |
13190 | ||
13191 | /* Read in signatured type at OFFSET and build its CU and die(s). */ | |
13192 | ||
13193 | static void | |
13194 | read_signatured_type_at_offset (struct objfile *objfile, | |
13195 | unsigned int offset) | |
13196 | { | |
13197 | struct signatured_type *type_sig; | |
13198 | ||
be391dca TT |
13199 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
13200 | ||
348e048f DE |
13201 | /* We have the section offset, but we need the signature to do the |
13202 | hash table lookup. */ | |
13203 | type_sig = lookup_signatured_type_at_offset (objfile, offset); | |
13204 | ||
13205 | gdb_assert (type_sig->per_cu.cu == NULL); | |
13206 | ||
13207 | read_signatured_type (objfile, type_sig); | |
13208 | ||
13209 | gdb_assert (type_sig->per_cu.cu != NULL); | |
13210 | } | |
13211 | ||
13212 | /* Read in a signatured type and build its CU and DIEs. */ | |
13213 | ||
13214 | static void | |
13215 | read_signatured_type (struct objfile *objfile, | |
13216 | struct signatured_type *type_sig) | |
13217 | { | |
1fd400ff | 13218 | gdb_byte *types_ptr; |
348e048f DE |
13219 | struct die_reader_specs reader_specs; |
13220 | struct dwarf2_cu *cu; | |
13221 | ULONGEST signature; | |
13222 | struct cleanup *back_to, *free_cu_cleanup; | |
13223 | struct attribute *attr; | |
13224 | ||
1fd400ff TT |
13225 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
13226 | types_ptr = dwarf2_per_objfile->types.buffer + type_sig->offset; | |
13227 | ||
348e048f DE |
13228 | gdb_assert (type_sig->per_cu.cu == NULL); |
13229 | ||
13230 | cu = xmalloc (sizeof (struct dwarf2_cu)); | |
13231 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
13232 | obstack_init (&cu->comp_unit_obstack); | |
13233 | cu->objfile = objfile; | |
13234 | type_sig->per_cu.cu = cu; | |
13235 | cu->per_cu = &type_sig->per_cu; | |
13236 | ||
13237 | /* If an error occurs while loading, release our storage. */ | |
13238 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
13239 | ||
13240 | types_ptr = read_type_comp_unit_head (&cu->header, &signature, | |
13241 | types_ptr, objfile->obfd); | |
13242 | gdb_assert (signature == type_sig->signature); | |
13243 | ||
13244 | cu->die_hash | |
13245 | = htab_create_alloc_ex (cu->header.length / 12, | |
13246 | die_hash, | |
13247 | die_eq, | |
13248 | NULL, | |
13249 | &cu->comp_unit_obstack, | |
13250 | hashtab_obstack_allocate, | |
13251 | dummy_obstack_deallocate); | |
13252 | ||
13253 | dwarf2_read_abbrevs (cu->objfile->obfd, cu); | |
13254 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
13255 | ||
13256 | init_cu_die_reader (&reader_specs, cu); | |
13257 | ||
13258 | cu->dies = read_die_and_children (&reader_specs, types_ptr, &types_ptr, | |
13259 | NULL /*parent*/); | |
13260 | ||
13261 | /* We try not to read any attributes in this function, because not | |
13262 | all objfiles needed for references have been loaded yet, and symbol | |
13263 | table processing isn't initialized. But we have to set the CU language, | |
13264 | or we won't be able to build types correctly. */ | |
13265 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
13266 | if (attr) | |
13267 | set_cu_language (DW_UNSND (attr), cu); | |
13268 | else | |
13269 | set_cu_language (language_minimal, cu); | |
13270 | ||
13271 | do_cleanups (back_to); | |
13272 | ||
13273 | /* We've successfully allocated this compilation unit. Let our caller | |
13274 | clean it up when finished with it. */ | |
13275 | discard_cleanups (free_cu_cleanup); | |
13276 | ||
13277 | type_sig->per_cu.cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
13278 | dwarf2_per_objfile->read_in_chain = &type_sig->per_cu; | |
c906108c SS |
13279 | } |
13280 | ||
c906108c SS |
13281 | /* Decode simple location descriptions. |
13282 | Given a pointer to a dwarf block that defines a location, compute | |
13283 | the location and return the value. | |
13284 | ||
4cecd739 DJ |
13285 | NOTE drow/2003-11-18: This function is called in two situations |
13286 | now: for the address of static or global variables (partial symbols | |
13287 | only) and for offsets into structures which are expected to be | |
13288 | (more or less) constant. The partial symbol case should go away, | |
13289 | and only the constant case should remain. That will let this | |
13290 | function complain more accurately. A few special modes are allowed | |
13291 | without complaint for global variables (for instance, global | |
13292 | register values and thread-local values). | |
c906108c SS |
13293 | |
13294 | A location description containing no operations indicates that the | |
4cecd739 | 13295 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
13296 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
13297 | callers will only want a very basic result and this can become a | |
13298 | complaint. | |
c906108c | 13299 | |
c906108c SS |
13300 | Note that stack[0] is unused except as a default error return. |
13301 | Note that stack overflow is not yet handled. */ | |
13302 | ||
13303 | static CORE_ADDR | |
e7c27a73 | 13304 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 13305 | { |
e7c27a73 | 13306 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13307 | int i; |
13308 | int size = blk->size; | |
fe1b8b76 | 13309 | gdb_byte *data = blk->data; |
c906108c SS |
13310 | CORE_ADDR stack[64]; |
13311 | int stacki; | |
13312 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 13313 | gdb_byte op; |
c906108c SS |
13314 | |
13315 | i = 0; | |
13316 | stacki = 0; | |
13317 | stack[stacki] = 0; | |
c906108c SS |
13318 | |
13319 | while (i < size) | |
13320 | { | |
c906108c SS |
13321 | op = data[i++]; |
13322 | switch (op) | |
13323 | { | |
f1bea926 JM |
13324 | case DW_OP_lit0: |
13325 | case DW_OP_lit1: | |
13326 | case DW_OP_lit2: | |
13327 | case DW_OP_lit3: | |
13328 | case DW_OP_lit4: | |
13329 | case DW_OP_lit5: | |
13330 | case DW_OP_lit6: | |
13331 | case DW_OP_lit7: | |
13332 | case DW_OP_lit8: | |
13333 | case DW_OP_lit9: | |
13334 | case DW_OP_lit10: | |
13335 | case DW_OP_lit11: | |
13336 | case DW_OP_lit12: | |
13337 | case DW_OP_lit13: | |
13338 | case DW_OP_lit14: | |
13339 | case DW_OP_lit15: | |
13340 | case DW_OP_lit16: | |
13341 | case DW_OP_lit17: | |
13342 | case DW_OP_lit18: | |
13343 | case DW_OP_lit19: | |
13344 | case DW_OP_lit20: | |
13345 | case DW_OP_lit21: | |
13346 | case DW_OP_lit22: | |
13347 | case DW_OP_lit23: | |
13348 | case DW_OP_lit24: | |
13349 | case DW_OP_lit25: | |
13350 | case DW_OP_lit26: | |
13351 | case DW_OP_lit27: | |
13352 | case DW_OP_lit28: | |
13353 | case DW_OP_lit29: | |
13354 | case DW_OP_lit30: | |
13355 | case DW_OP_lit31: | |
13356 | stack[++stacki] = op - DW_OP_lit0; | |
13357 | break; | |
13358 | ||
c906108c SS |
13359 | case DW_OP_reg0: |
13360 | case DW_OP_reg1: | |
13361 | case DW_OP_reg2: | |
13362 | case DW_OP_reg3: | |
13363 | case DW_OP_reg4: | |
13364 | case DW_OP_reg5: | |
13365 | case DW_OP_reg6: | |
13366 | case DW_OP_reg7: | |
13367 | case DW_OP_reg8: | |
13368 | case DW_OP_reg9: | |
13369 | case DW_OP_reg10: | |
13370 | case DW_OP_reg11: | |
13371 | case DW_OP_reg12: | |
13372 | case DW_OP_reg13: | |
13373 | case DW_OP_reg14: | |
13374 | case DW_OP_reg15: | |
13375 | case DW_OP_reg16: | |
13376 | case DW_OP_reg17: | |
13377 | case DW_OP_reg18: | |
13378 | case DW_OP_reg19: | |
13379 | case DW_OP_reg20: | |
13380 | case DW_OP_reg21: | |
13381 | case DW_OP_reg22: | |
13382 | case DW_OP_reg23: | |
13383 | case DW_OP_reg24: | |
13384 | case DW_OP_reg25: | |
13385 | case DW_OP_reg26: | |
13386 | case DW_OP_reg27: | |
13387 | case DW_OP_reg28: | |
13388 | case DW_OP_reg29: | |
13389 | case DW_OP_reg30: | |
13390 | case DW_OP_reg31: | |
c906108c | 13391 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
13392 | if (i < size) |
13393 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
13394 | break; |
13395 | ||
13396 | case DW_OP_regx: | |
c906108c SS |
13397 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
13398 | i += bytes_read; | |
c906108c | 13399 | stack[++stacki] = unsnd; |
4cecd739 DJ |
13400 | if (i < size) |
13401 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
13402 | break; |
13403 | ||
13404 | case DW_OP_addr: | |
107d2387 | 13405 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 13406 | cu, &bytes_read); |
107d2387 | 13407 | i += bytes_read; |
c906108c SS |
13408 | break; |
13409 | ||
13410 | case DW_OP_const1u: | |
13411 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
13412 | i += 1; | |
13413 | break; | |
13414 | ||
13415 | case DW_OP_const1s: | |
13416 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
13417 | i += 1; | |
13418 | break; | |
13419 | ||
13420 | case DW_OP_const2u: | |
13421 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
13422 | i += 2; | |
13423 | break; | |
13424 | ||
13425 | case DW_OP_const2s: | |
13426 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
13427 | i += 2; | |
13428 | break; | |
13429 | ||
13430 | case DW_OP_const4u: | |
13431 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
13432 | i += 4; | |
13433 | break; | |
13434 | ||
13435 | case DW_OP_const4s: | |
13436 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
13437 | i += 4; | |
13438 | break; | |
13439 | ||
13440 | case DW_OP_constu: | |
13441 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 13442 | &bytes_read); |
c906108c SS |
13443 | i += bytes_read; |
13444 | break; | |
13445 | ||
13446 | case DW_OP_consts: | |
13447 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
13448 | i += bytes_read; | |
13449 | break; | |
13450 | ||
f1bea926 JM |
13451 | case DW_OP_dup: |
13452 | stack[stacki + 1] = stack[stacki]; | |
13453 | stacki++; | |
13454 | break; | |
13455 | ||
c906108c SS |
13456 | case DW_OP_plus: |
13457 | stack[stacki - 1] += stack[stacki]; | |
13458 | stacki--; | |
13459 | break; | |
13460 | ||
13461 | case DW_OP_plus_uconst: | |
13462 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
13463 | i += bytes_read; | |
13464 | break; | |
13465 | ||
13466 | case DW_OP_minus: | |
f1bea926 | 13467 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
13468 | stacki--; |
13469 | break; | |
13470 | ||
7a292a7a | 13471 | case DW_OP_deref: |
7a292a7a | 13472 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
13473 | this using GDB's address_class enum. This is valid for partial |
13474 | global symbols, although the variable's address will be bogus | |
13475 | in the psymtab. */ | |
7a292a7a | 13476 | if (i < size) |
4d3c2250 | 13477 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
13478 | break; |
13479 | ||
9d774e44 | 13480 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
13481 | /* The top of the stack has the offset from the beginning |
13482 | of the thread control block at which the variable is located. */ | |
13483 | /* Nothing should follow this operator, so the top of stack would | |
13484 | be returned. */ | |
4cecd739 DJ |
13485 | /* This is valid for partial global symbols, but the variable's |
13486 | address will be bogus in the psymtab. */ | |
9d774e44 | 13487 | if (i < size) |
4d3c2250 | 13488 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
13489 | break; |
13490 | ||
42be36b3 CT |
13491 | case DW_OP_GNU_uninit: |
13492 | break; | |
13493 | ||
c906108c | 13494 | default: |
e2e0b3e5 | 13495 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), |
9eae7c52 | 13496 | dwarf_stack_op_name (op, 1)); |
c906108c SS |
13497 | return (stack[stacki]); |
13498 | } | |
13499 | } | |
13500 | return (stack[stacki]); | |
13501 | } | |
13502 | ||
13503 | /* memory allocation interface */ | |
13504 | ||
c906108c | 13505 | static struct dwarf_block * |
7b5a2f43 | 13506 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
13507 | { |
13508 | struct dwarf_block *blk; | |
13509 | ||
13510 | blk = (struct dwarf_block *) | |
7b5a2f43 | 13511 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
13512 | return (blk); |
13513 | } | |
13514 | ||
13515 | static struct abbrev_info * | |
f3dd6933 | 13516 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
13517 | { |
13518 | struct abbrev_info *abbrev; | |
13519 | ||
f3dd6933 DJ |
13520 | abbrev = (struct abbrev_info *) |
13521 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
13522 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
13523 | return (abbrev); | |
13524 | } | |
13525 | ||
13526 | static struct die_info * | |
b60c80d6 | 13527 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
13528 | { |
13529 | struct die_info *die; | |
b60c80d6 DJ |
13530 | size_t size = sizeof (struct die_info); |
13531 | ||
13532 | if (num_attrs > 1) | |
13533 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 13534 | |
b60c80d6 | 13535 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
13536 | memset (die, 0, sizeof (struct die_info)); |
13537 | return (die); | |
13538 | } | |
2e276125 JB |
13539 | |
13540 | \f | |
13541 | /* Macro support. */ | |
13542 | ||
13543 | ||
13544 | /* Return the full name of file number I in *LH's file name table. | |
13545 | Use COMP_DIR as the name of the current directory of the | |
13546 | compilation. The result is allocated using xmalloc; the caller is | |
13547 | responsible for freeing it. */ | |
13548 | static char * | |
13549 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
13550 | { | |
6a83a1e6 EZ |
13551 | /* Is the file number a valid index into the line header's file name |
13552 | table? Remember that file numbers start with one, not zero. */ | |
13553 | if (1 <= file && file <= lh->num_file_names) | |
13554 | { | |
13555 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 13556 | |
6a83a1e6 EZ |
13557 | if (IS_ABSOLUTE_PATH (fe->name)) |
13558 | return xstrdup (fe->name); | |
13559 | else | |
13560 | { | |
13561 | const char *dir; | |
13562 | int dir_len; | |
13563 | char *full_name; | |
13564 | ||
13565 | if (fe->dir_index) | |
13566 | dir = lh->include_dirs[fe->dir_index - 1]; | |
13567 | else | |
13568 | dir = comp_dir; | |
13569 | ||
13570 | if (dir) | |
13571 | { | |
13572 | dir_len = strlen (dir); | |
13573 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
13574 | strcpy (full_name, dir); | |
13575 | full_name[dir_len] = '/'; | |
13576 | strcpy (full_name + dir_len + 1, fe->name); | |
13577 | return full_name; | |
13578 | } | |
13579 | else | |
13580 | return xstrdup (fe->name); | |
13581 | } | |
13582 | } | |
2e276125 JB |
13583 | else |
13584 | { | |
6a83a1e6 EZ |
13585 | /* The compiler produced a bogus file number. We can at least |
13586 | record the macro definitions made in the file, even if we | |
13587 | won't be able to find the file by name. */ | |
13588 | char fake_name[80]; | |
9a619af0 | 13589 | |
6a83a1e6 | 13590 | sprintf (fake_name, "<bad macro file number %d>", file); |
2e276125 | 13591 | |
6e70227d | 13592 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
13593 | _("bad file number in macro information (%d)"), |
13594 | file); | |
2e276125 | 13595 | |
6a83a1e6 | 13596 | return xstrdup (fake_name); |
2e276125 JB |
13597 | } |
13598 | } | |
13599 | ||
13600 | ||
13601 | static struct macro_source_file * | |
13602 | macro_start_file (int file, int line, | |
13603 | struct macro_source_file *current_file, | |
13604 | const char *comp_dir, | |
13605 | struct line_header *lh, struct objfile *objfile) | |
13606 | { | |
13607 | /* The full name of this source file. */ | |
13608 | char *full_name = file_full_name (file, lh, comp_dir); | |
13609 | ||
13610 | /* We don't create a macro table for this compilation unit | |
13611 | at all until we actually get a filename. */ | |
13612 | if (! pending_macros) | |
4a146b47 | 13613 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 13614 | objfile->macro_cache); |
2e276125 JB |
13615 | |
13616 | if (! current_file) | |
13617 | /* If we have no current file, then this must be the start_file | |
13618 | directive for the compilation unit's main source file. */ | |
13619 | current_file = macro_set_main (pending_macros, full_name); | |
13620 | else | |
13621 | current_file = macro_include (current_file, line, full_name); | |
13622 | ||
13623 | xfree (full_name); | |
6e70227d | 13624 | |
2e276125 JB |
13625 | return current_file; |
13626 | } | |
13627 | ||
13628 | ||
13629 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
13630 | followed by a null byte. */ | |
13631 | static char * | |
13632 | copy_string (const char *buf, int len) | |
13633 | { | |
13634 | char *s = xmalloc (len + 1); | |
9a619af0 | 13635 | |
2e276125 JB |
13636 | memcpy (s, buf, len); |
13637 | s[len] = '\0'; | |
2e276125 JB |
13638 | return s; |
13639 | } | |
13640 | ||
13641 | ||
13642 | static const char * | |
13643 | consume_improper_spaces (const char *p, const char *body) | |
13644 | { | |
13645 | if (*p == ' ') | |
13646 | { | |
4d3c2250 | 13647 | complaint (&symfile_complaints, |
e2e0b3e5 | 13648 | _("macro definition contains spaces in formal argument list:\n`%s'"), |
4d3c2250 | 13649 | body); |
2e276125 JB |
13650 | |
13651 | while (*p == ' ') | |
13652 | p++; | |
13653 | } | |
13654 | ||
13655 | return p; | |
13656 | } | |
13657 | ||
13658 | ||
13659 | static void | |
13660 | parse_macro_definition (struct macro_source_file *file, int line, | |
13661 | const char *body) | |
13662 | { | |
13663 | const char *p; | |
13664 | ||
13665 | /* The body string takes one of two forms. For object-like macro | |
13666 | definitions, it should be: | |
13667 | ||
13668 | <macro name> " " <definition> | |
13669 | ||
13670 | For function-like macro definitions, it should be: | |
13671 | ||
13672 | <macro name> "() " <definition> | |
13673 | or | |
13674 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
13675 | ||
13676 | Spaces may appear only where explicitly indicated, and in the | |
13677 | <definition>. | |
13678 | ||
13679 | The Dwarf 2 spec says that an object-like macro's name is always | |
13680 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 13681 | the space when the macro's definition is the empty string. |
2e276125 JB |
13682 | |
13683 | The Dwarf 2 spec says that there should be no spaces between the | |
13684 | formal arguments in a function-like macro's formal argument list, | |
13685 | but versions of GCC around March 2002 include spaces after the | |
13686 | commas. */ | |
13687 | ||
13688 | ||
13689 | /* Find the extent of the macro name. The macro name is terminated | |
13690 | by either a space or null character (for an object-like macro) or | |
13691 | an opening paren (for a function-like macro). */ | |
13692 | for (p = body; *p; p++) | |
13693 | if (*p == ' ' || *p == '(') | |
13694 | break; | |
13695 | ||
13696 | if (*p == ' ' || *p == '\0') | |
13697 | { | |
13698 | /* It's an object-like macro. */ | |
13699 | int name_len = p - body; | |
13700 | char *name = copy_string (body, name_len); | |
13701 | const char *replacement; | |
13702 | ||
13703 | if (*p == ' ') | |
13704 | replacement = body + name_len + 1; | |
13705 | else | |
13706 | { | |
4d3c2250 | 13707 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
13708 | replacement = body + name_len; |
13709 | } | |
6e70227d | 13710 | |
2e276125 JB |
13711 | macro_define_object (file, line, name, replacement); |
13712 | ||
13713 | xfree (name); | |
13714 | } | |
13715 | else if (*p == '(') | |
13716 | { | |
13717 | /* It's a function-like macro. */ | |
13718 | char *name = copy_string (body, p - body); | |
13719 | int argc = 0; | |
13720 | int argv_size = 1; | |
13721 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
13722 | ||
13723 | p++; | |
13724 | ||
13725 | p = consume_improper_spaces (p, body); | |
13726 | ||
13727 | /* Parse the formal argument list. */ | |
13728 | while (*p && *p != ')') | |
13729 | { | |
13730 | /* Find the extent of the current argument name. */ | |
13731 | const char *arg_start = p; | |
13732 | ||
13733 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
13734 | p++; | |
13735 | ||
13736 | if (! *p || p == arg_start) | |
4d3c2250 | 13737 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
13738 | else |
13739 | { | |
13740 | /* Make sure argv has room for the new argument. */ | |
13741 | if (argc >= argv_size) | |
13742 | { | |
13743 | argv_size *= 2; | |
13744 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
13745 | } | |
13746 | ||
13747 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
13748 | } | |
13749 | ||
13750 | p = consume_improper_spaces (p, body); | |
13751 | ||
13752 | /* Consume the comma, if present. */ | |
13753 | if (*p == ',') | |
13754 | { | |
13755 | p++; | |
13756 | ||
13757 | p = consume_improper_spaces (p, body); | |
13758 | } | |
13759 | } | |
13760 | ||
13761 | if (*p == ')') | |
13762 | { | |
13763 | p++; | |
13764 | ||
13765 | if (*p == ' ') | |
13766 | /* Perfectly formed definition, no complaints. */ | |
13767 | macro_define_function (file, line, name, | |
6e70227d | 13768 | argc, (const char **) argv, |
2e276125 JB |
13769 | p + 1); |
13770 | else if (*p == '\0') | |
13771 | { | |
13772 | /* Complain, but do define it. */ | |
4d3c2250 | 13773 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 13774 | macro_define_function (file, line, name, |
6e70227d | 13775 | argc, (const char **) argv, |
2e276125 JB |
13776 | p); |
13777 | } | |
13778 | else | |
13779 | /* Just complain. */ | |
4d3c2250 | 13780 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
13781 | } |
13782 | else | |
13783 | /* Just complain. */ | |
4d3c2250 | 13784 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
13785 | |
13786 | xfree (name); | |
13787 | { | |
13788 | int i; | |
13789 | ||
13790 | for (i = 0; i < argc; i++) | |
13791 | xfree (argv[i]); | |
13792 | } | |
13793 | xfree (argv); | |
13794 | } | |
13795 | else | |
4d3c2250 | 13796 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
13797 | } |
13798 | ||
13799 | ||
13800 | static void | |
13801 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
13802 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 13803 | struct dwarf2_cu *cu) |
2e276125 | 13804 | { |
fe1b8b76 | 13805 | gdb_byte *mac_ptr, *mac_end; |
2e276125 | 13806 | struct macro_source_file *current_file = 0; |
757a13d0 JK |
13807 | enum dwarf_macinfo_record_type macinfo_type; |
13808 | int at_commandline; | |
2e276125 | 13809 | |
be391dca TT |
13810 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
13811 | &dwarf2_per_objfile->macinfo); | |
dce234bc | 13812 | if (dwarf2_per_objfile->macinfo.buffer == NULL) |
2e276125 | 13813 | { |
e2e0b3e5 | 13814 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
13815 | return; |
13816 | } | |
13817 | ||
757a13d0 JK |
13818 | /* First pass: Find the name of the base filename. |
13819 | This filename is needed in order to process all macros whose definition | |
13820 | (or undefinition) comes from the command line. These macros are defined | |
13821 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
13822 | associated to the base file. | |
13823 | ||
13824 | To determine the base file name, we scan the macro definitions until we | |
13825 | reach the first DW_MACINFO_start_file entry. We then initialize | |
13826 | CURRENT_FILE accordingly so that any macro definition found before the | |
13827 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
13828 | ||
dce234bc PP |
13829 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
13830 | mac_end = dwarf2_per_objfile->macinfo.buffer | |
13831 | + dwarf2_per_objfile->macinfo.size; | |
2e276125 | 13832 | |
757a13d0 | 13833 | do |
2e276125 | 13834 | { |
2e276125 JB |
13835 | /* Do we at least have room for a macinfo type byte? */ |
13836 | if (mac_ptr >= mac_end) | |
13837 | { | |
757a13d0 JK |
13838 | /* Complaint is printed during the second pass as GDB will probably |
13839 | stop the first pass earlier upon finding DW_MACINFO_start_file. */ | |
13840 | break; | |
2e276125 JB |
13841 | } |
13842 | ||
13843 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
13844 | mac_ptr++; | |
13845 | ||
13846 | switch (macinfo_type) | |
13847 | { | |
13848 | /* A zero macinfo type indicates the end of the macro | |
13849 | information. */ | |
13850 | case 0: | |
757a13d0 JK |
13851 | break; |
13852 | ||
13853 | case DW_MACINFO_define: | |
13854 | case DW_MACINFO_undef: | |
13855 | /* Only skip the data by MAC_PTR. */ | |
13856 | { | |
13857 | unsigned int bytes_read; | |
13858 | ||
13859 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13860 | mac_ptr += bytes_read; | |
9b1c24c8 | 13861 | read_direct_string (abfd, mac_ptr, &bytes_read); |
757a13d0 JK |
13862 | mac_ptr += bytes_read; |
13863 | } | |
13864 | break; | |
13865 | ||
13866 | case DW_MACINFO_start_file: | |
13867 | { | |
13868 | unsigned int bytes_read; | |
13869 | int line, file; | |
13870 | ||
13871 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13872 | mac_ptr += bytes_read; | |
13873 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13874 | mac_ptr += bytes_read; | |
13875 | ||
13876 | current_file = macro_start_file (file, line, current_file, comp_dir, | |
13877 | lh, cu->objfile); | |
13878 | } | |
13879 | break; | |
13880 | ||
13881 | case DW_MACINFO_end_file: | |
13882 | /* No data to skip by MAC_PTR. */ | |
13883 | break; | |
13884 | ||
13885 | case DW_MACINFO_vendor_ext: | |
13886 | /* Only skip the data by MAC_PTR. */ | |
13887 | { | |
13888 | unsigned int bytes_read; | |
13889 | ||
13890 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13891 | mac_ptr += bytes_read; | |
9b1c24c8 | 13892 | read_direct_string (abfd, mac_ptr, &bytes_read); |
757a13d0 JK |
13893 | mac_ptr += bytes_read; |
13894 | } | |
13895 | break; | |
13896 | ||
13897 | default: | |
13898 | break; | |
13899 | } | |
13900 | } while (macinfo_type != 0 && current_file == NULL); | |
13901 | ||
13902 | /* Second pass: Process all entries. | |
13903 | ||
13904 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
13905 | command-line macro definitions/undefinitions. This flag is unset when we | |
13906 | reach the first DW_MACINFO_start_file entry. */ | |
13907 | ||
dce234bc | 13908 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
757a13d0 JK |
13909 | |
13910 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
13911 | GDB is still reading the definitions from command line. First | |
13912 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
13913 | to create CURRENT_FILE for the main source holding also the command line | |
13914 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
13915 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
13916 | ||
13917 | at_commandline = 1; | |
13918 | ||
13919 | do | |
13920 | { | |
13921 | /* Do we at least have room for a macinfo type byte? */ | |
13922 | if (mac_ptr >= mac_end) | |
13923 | { | |
13924 | dwarf2_macros_too_long_complaint (); | |
13925 | break; | |
13926 | } | |
13927 | ||
13928 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
13929 | mac_ptr++; | |
13930 | ||
13931 | switch (macinfo_type) | |
13932 | { | |
13933 | /* A zero macinfo type indicates the end of the macro | |
13934 | information. */ | |
13935 | case 0: | |
13936 | break; | |
2e276125 JB |
13937 | |
13938 | case DW_MACINFO_define: | |
13939 | case DW_MACINFO_undef: | |
13940 | { | |
891d2f0b | 13941 | unsigned int bytes_read; |
2e276125 JB |
13942 | int line; |
13943 | char *body; | |
13944 | ||
13945 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13946 | mac_ptr += bytes_read; | |
9b1c24c8 | 13947 | body = read_direct_string (abfd, mac_ptr, &bytes_read); |
2e276125 JB |
13948 | mac_ptr += bytes_read; |
13949 | ||
13950 | if (! current_file) | |
757a13d0 JK |
13951 | { |
13952 | /* DWARF violation as no main source is present. */ | |
13953 | complaint (&symfile_complaints, | |
13954 | _("debug info with no main source gives macro %s " | |
13955 | "on line %d: %s"), | |
6e70227d DE |
13956 | macinfo_type == DW_MACINFO_define ? |
13957 | _("definition") : | |
905e0470 PM |
13958 | macinfo_type == DW_MACINFO_undef ? |
13959 | _("undefinition") : | |
13960 | _("something-or-other"), line, body); | |
757a13d0 JK |
13961 | break; |
13962 | } | |
13963 | if ((line == 0 && !at_commandline) || (line != 0 && at_commandline)) | |
4d3c2250 | 13964 | complaint (&symfile_complaints, |
757a13d0 JK |
13965 | _("debug info gives %s macro %s with %s line %d: %s"), |
13966 | at_commandline ? _("command-line") : _("in-file"), | |
905e0470 | 13967 | macinfo_type == DW_MACINFO_define ? |
6e70227d | 13968 | _("definition") : |
905e0470 PM |
13969 | macinfo_type == DW_MACINFO_undef ? |
13970 | _("undefinition") : | |
13971 | _("something-or-other"), | |
757a13d0 JK |
13972 | line == 0 ? _("zero") : _("non-zero"), line, body); |
13973 | ||
13974 | if (macinfo_type == DW_MACINFO_define) | |
13975 | parse_macro_definition (current_file, line, body); | |
13976 | else if (macinfo_type == DW_MACINFO_undef) | |
13977 | macro_undef (current_file, line, body); | |
2e276125 JB |
13978 | } |
13979 | break; | |
13980 | ||
13981 | case DW_MACINFO_start_file: | |
13982 | { | |
891d2f0b | 13983 | unsigned int bytes_read; |
2e276125 JB |
13984 | int line, file; |
13985 | ||
13986 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13987 | mac_ptr += bytes_read; | |
13988 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13989 | mac_ptr += bytes_read; | |
13990 | ||
757a13d0 JK |
13991 | if ((line == 0 && !at_commandline) || (line != 0 && at_commandline)) |
13992 | complaint (&symfile_complaints, | |
13993 | _("debug info gives source %d included " | |
13994 | "from %s at %s line %d"), | |
13995 | file, at_commandline ? _("command-line") : _("file"), | |
13996 | line == 0 ? _("zero") : _("non-zero"), line); | |
13997 | ||
13998 | if (at_commandline) | |
13999 | { | |
14000 | /* This DW_MACINFO_start_file was executed in the pass one. */ | |
14001 | at_commandline = 0; | |
14002 | } | |
14003 | else | |
14004 | current_file = macro_start_file (file, line, | |
14005 | current_file, comp_dir, | |
14006 | lh, cu->objfile); | |
2e276125 JB |
14007 | } |
14008 | break; | |
14009 | ||
14010 | case DW_MACINFO_end_file: | |
14011 | if (! current_file) | |
4d3c2250 | 14012 | complaint (&symfile_complaints, |
e2e0b3e5 | 14013 | _("macro debug info has an unmatched `close_file' directive")); |
2e276125 JB |
14014 | else |
14015 | { | |
14016 | current_file = current_file->included_by; | |
14017 | if (! current_file) | |
14018 | { | |
14019 | enum dwarf_macinfo_record_type next_type; | |
14020 | ||
14021 | /* GCC circa March 2002 doesn't produce the zero | |
14022 | type byte marking the end of the compilation | |
14023 | unit. Complain if it's not there, but exit no | |
14024 | matter what. */ | |
14025 | ||
14026 | /* Do we at least have room for a macinfo type byte? */ | |
14027 | if (mac_ptr >= mac_end) | |
14028 | { | |
4d3c2250 | 14029 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
14030 | return; |
14031 | } | |
14032 | ||
14033 | /* We don't increment mac_ptr here, so this is just | |
14034 | a look-ahead. */ | |
14035 | next_type = read_1_byte (abfd, mac_ptr); | |
14036 | if (next_type != 0) | |
4d3c2250 | 14037 | complaint (&symfile_complaints, |
e2e0b3e5 | 14038 | _("no terminating 0-type entry for macros in `.debug_macinfo' section")); |
2e276125 JB |
14039 | |
14040 | return; | |
14041 | } | |
14042 | } | |
14043 | break; | |
14044 | ||
14045 | case DW_MACINFO_vendor_ext: | |
14046 | { | |
891d2f0b | 14047 | unsigned int bytes_read; |
2e276125 JB |
14048 | int constant; |
14049 | char *string; | |
14050 | ||
14051 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14052 | mac_ptr += bytes_read; | |
9b1c24c8 | 14053 | string = read_direct_string (abfd, mac_ptr, &bytes_read); |
2e276125 JB |
14054 | mac_ptr += bytes_read; |
14055 | ||
14056 | /* We don't recognize any vendor extensions. */ | |
14057 | } | |
14058 | break; | |
14059 | } | |
757a13d0 | 14060 | } while (macinfo_type != 0); |
2e276125 | 14061 | } |
8e19ed76 PS |
14062 | |
14063 | /* Check if the attribute's form is a DW_FORM_block* | |
14064 | if so return true else false. */ | |
14065 | static int | |
14066 | attr_form_is_block (struct attribute *attr) | |
14067 | { | |
14068 | return (attr == NULL ? 0 : | |
14069 | attr->form == DW_FORM_block1 | |
14070 | || attr->form == DW_FORM_block2 | |
14071 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
14072 | || attr->form == DW_FORM_block |
14073 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 14074 | } |
4c2df51b | 14075 | |
c6a0999f JB |
14076 | /* Return non-zero if ATTR's value is a section offset --- classes |
14077 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
14078 | You may use DW_UNSND (attr) to retrieve such offsets. | |
14079 | ||
14080 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
14081 | may have a value that belongs to more than one of these classes; it | |
14082 | would be ambiguous if we did, because we use the same forms for all | |
14083 | of them. */ | |
3690dd37 JB |
14084 | static int |
14085 | attr_form_is_section_offset (struct attribute *attr) | |
14086 | { | |
14087 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
14088 | || attr->form == DW_FORM_data8 |
14089 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
14090 | } |
14091 | ||
14092 | ||
14093 | /* Return non-zero if ATTR's value falls in the 'constant' class, or | |
14094 | zero otherwise. When this function returns true, you can apply | |
14095 | dwarf2_get_attr_constant_value to it. | |
14096 | ||
14097 | However, note that for some attributes you must check | |
14098 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
14099 | and DW_FORM_data8 are members of both the constant class, and of | |
14100 | the classes that contain offsets into other debug sections | |
14101 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
14102 | that, if an attribute's can be either a constant or one of the | |
14103 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
14104 | taken as section offsets, not constants. */ | |
14105 | static int | |
14106 | attr_form_is_constant (struct attribute *attr) | |
14107 | { | |
14108 | switch (attr->form) | |
14109 | { | |
14110 | case DW_FORM_sdata: | |
14111 | case DW_FORM_udata: | |
14112 | case DW_FORM_data1: | |
14113 | case DW_FORM_data2: | |
14114 | case DW_FORM_data4: | |
14115 | case DW_FORM_data8: | |
14116 | return 1; | |
14117 | default: | |
14118 | return 0; | |
14119 | } | |
14120 | } | |
14121 | ||
4c2df51b DJ |
14122 | static void |
14123 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 14124 | struct dwarf2_cu *cu) |
4c2df51b | 14125 | { |
3690dd37 | 14126 | if (attr_form_is_section_offset (attr) |
99bcc461 DJ |
14127 | /* ".debug_loc" may not exist at all, or the offset may be outside |
14128 | the section. If so, fall through to the complaint in the | |
14129 | other branch. */ | |
dce234bc | 14130 | && DW_UNSND (attr) < dwarf2_per_objfile->loc.size) |
4c2df51b | 14131 | { |
0d53c4c4 | 14132 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 14133 | |
4a146b47 | 14134 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 14135 | sizeof (struct dwarf2_loclist_baton)); |
ae0d2f24 UW |
14136 | baton->per_cu = cu->per_cu; |
14137 | gdb_assert (baton->per_cu); | |
4c2df51b | 14138 | |
be391dca TT |
14139 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
14140 | &dwarf2_per_objfile->loc); | |
14141 | ||
0d53c4c4 DJ |
14142 | /* We don't know how long the location list is, but make sure we |
14143 | don't run off the edge of the section. */ | |
dce234bc PP |
14144 | baton->size = dwarf2_per_objfile->loc.size - DW_UNSND (attr); |
14145 | baton->data = dwarf2_per_objfile->loc.buffer + DW_UNSND (attr); | |
d00adf39 DE |
14146 | baton->base_address = cu->base_address; |
14147 | if (cu->base_known == 0) | |
0d53c4c4 | 14148 | complaint (&symfile_complaints, |
e2e0b3e5 | 14149 | _("Location list used without specifying the CU base address.")); |
4c2df51b | 14150 | |
768a979c | 14151 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
14152 | SYMBOL_LOCATION_BATON (sym) = baton; |
14153 | } | |
14154 | else | |
14155 | { | |
14156 | struct dwarf2_locexpr_baton *baton; | |
14157 | ||
4a146b47 | 14158 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 14159 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
14160 | baton->per_cu = cu->per_cu; |
14161 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
14162 | |
14163 | if (attr_form_is_block (attr)) | |
14164 | { | |
14165 | /* Note that we're just copying the block's data pointer | |
14166 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
14167 | info_buffer for SYM's objfile; right now we never release |
14168 | that buffer, but when we do clean up properly this may | |
14169 | need to change. */ | |
0d53c4c4 DJ |
14170 | baton->size = DW_BLOCK (attr)->size; |
14171 | baton->data = DW_BLOCK (attr)->data; | |
14172 | } | |
14173 | else | |
14174 | { | |
14175 | dwarf2_invalid_attrib_class_complaint ("location description", | |
14176 | SYMBOL_NATURAL_NAME (sym)); | |
14177 | baton->size = 0; | |
14178 | baton->data = NULL; | |
14179 | } | |
6e70227d | 14180 | |
768a979c | 14181 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
14182 | SYMBOL_LOCATION_BATON (sym) = baton; |
14183 | } | |
4c2df51b | 14184 | } |
6502dd73 | 14185 | |
9aa1f1e3 TT |
14186 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
14187 | came from a separate debuginfo file, then the master objfile is | |
14188 | returned. */ | |
ae0d2f24 UW |
14189 | |
14190 | struct objfile * | |
14191 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
14192 | { | |
9291a0cd | 14193 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
14194 | |
14195 | /* Return the master objfile, so that we can report and look up the | |
14196 | correct file containing this variable. */ | |
14197 | if (objfile->separate_debug_objfile_backlink) | |
14198 | objfile = objfile->separate_debug_objfile_backlink; | |
14199 | ||
14200 | return objfile; | |
14201 | } | |
14202 | ||
14203 | /* Return the address size given in the compilation unit header for CU. */ | |
14204 | ||
14205 | CORE_ADDR | |
14206 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) | |
14207 | { | |
14208 | if (per_cu->cu) | |
14209 | return per_cu->cu->header.addr_size; | |
14210 | else | |
14211 | { | |
14212 | /* If the CU is not currently read in, we re-read its header. */ | |
9291a0cd | 14213 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
14214 | struct dwarf2_per_objfile *per_objfile |
14215 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
dce234bc | 14216 | gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset; |
ae0d2f24 | 14217 | struct comp_unit_head cu_header; |
9a619af0 | 14218 | |
ae0d2f24 UW |
14219 | memset (&cu_header, 0, sizeof cu_header); |
14220 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
14221 | return cu_header.addr_size; | |
14222 | } | |
14223 | } | |
14224 | ||
9eae7c52 TT |
14225 | /* Return the offset size given in the compilation unit header for CU. */ |
14226 | ||
14227 | int | |
14228 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
14229 | { | |
14230 | if (per_cu->cu) | |
14231 | return per_cu->cu->header.offset_size; | |
14232 | else | |
14233 | { | |
14234 | /* If the CU is not currently read in, we re-read its header. */ | |
9291a0cd | 14235 | struct objfile *objfile = per_cu->objfile; |
9eae7c52 TT |
14236 | struct dwarf2_per_objfile *per_objfile |
14237 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
14238 | gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset; | |
14239 | struct comp_unit_head cu_header; | |
14240 | ||
14241 | memset (&cu_header, 0, sizeof cu_header); | |
14242 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
14243 | return cu_header.offset_size; | |
14244 | } | |
14245 | } | |
14246 | ||
9aa1f1e3 TT |
14247 | /* Return the text offset of the CU. The returned offset comes from |
14248 | this CU's objfile. If this objfile came from a separate debuginfo | |
14249 | file, then the offset may be different from the corresponding | |
14250 | offset in the parent objfile. */ | |
14251 | ||
14252 | CORE_ADDR | |
14253 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
14254 | { | |
bb3fa9d0 | 14255 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
14256 | |
14257 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14258 | } | |
14259 | ||
348e048f DE |
14260 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
14261 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
14262 | |
14263 | static struct dwarf2_per_cu_data * | |
c764a876 | 14264 | dwarf2_find_containing_comp_unit (unsigned int offset, |
ae038cb0 DJ |
14265 | struct objfile *objfile) |
14266 | { | |
14267 | struct dwarf2_per_cu_data *this_cu; | |
14268 | int low, high; | |
14269 | ||
ae038cb0 DJ |
14270 | low = 0; |
14271 | high = dwarf2_per_objfile->n_comp_units - 1; | |
14272 | while (high > low) | |
14273 | { | |
14274 | int mid = low + (high - low) / 2; | |
9a619af0 | 14275 | |
ae038cb0 DJ |
14276 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) |
14277 | high = mid; | |
14278 | else | |
14279 | low = mid + 1; | |
14280 | } | |
14281 | gdb_assert (low == high); | |
14282 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
14283 | { | |
10b3939b | 14284 | if (low == 0) |
8a3fe4f8 AC |
14285 | error (_("Dwarf Error: could not find partial DIE containing " |
14286 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
14287 | (long) offset, bfd_get_filename (objfile->obfd)); |
14288 | ||
ae038cb0 DJ |
14289 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
14290 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
14291 | } | |
14292 | else | |
14293 | { | |
14294 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
14295 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
14296 | && offset >= this_cu->offset + this_cu->length) | |
c764a876 | 14297 | error (_("invalid dwarf2 offset %u"), offset); |
ae038cb0 DJ |
14298 | gdb_assert (offset < this_cu->offset + this_cu->length); |
14299 | return this_cu; | |
14300 | } | |
14301 | } | |
14302 | ||
10b3939b DJ |
14303 | /* Locate the compilation unit from OBJFILE which is located at exactly |
14304 | OFFSET. Raises an error on failure. */ | |
14305 | ||
ae038cb0 | 14306 | static struct dwarf2_per_cu_data * |
c764a876 | 14307 | dwarf2_find_comp_unit (unsigned int offset, struct objfile *objfile) |
ae038cb0 DJ |
14308 | { |
14309 | struct dwarf2_per_cu_data *this_cu; | |
9a619af0 | 14310 | |
ae038cb0 DJ |
14311 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); |
14312 | if (this_cu->offset != offset) | |
c764a876 | 14313 | error (_("no compilation unit with offset %u."), offset); |
ae038cb0 DJ |
14314 | return this_cu; |
14315 | } | |
14316 | ||
93311388 DE |
14317 | /* Malloc space for a dwarf2_cu for OBJFILE and initialize it. */ |
14318 | ||
14319 | static struct dwarf2_cu * | |
14320 | alloc_one_comp_unit (struct objfile *objfile) | |
14321 | { | |
14322 | struct dwarf2_cu *cu = xcalloc (1, sizeof (struct dwarf2_cu)); | |
14323 | cu->objfile = objfile; | |
14324 | obstack_init (&cu->comp_unit_obstack); | |
14325 | return cu; | |
14326 | } | |
14327 | ||
ae038cb0 DJ |
14328 | /* Release one cached compilation unit, CU. We unlink it from the tree |
14329 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
14330 | the caller is responsible for that. |
14331 | NOTE: DATA is a void * because this function is also used as a | |
14332 | cleanup routine. */ | |
ae038cb0 DJ |
14333 | |
14334 | static void | |
14335 | free_one_comp_unit (void *data) | |
14336 | { | |
14337 | struct dwarf2_cu *cu = data; | |
14338 | ||
14339 | if (cu->per_cu != NULL) | |
14340 | cu->per_cu->cu = NULL; | |
14341 | cu->per_cu = NULL; | |
14342 | ||
14343 | obstack_free (&cu->comp_unit_obstack, NULL); | |
14344 | ||
14345 | xfree (cu); | |
14346 | } | |
14347 | ||
72bf9492 | 14348 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
14349 | when we're finished with it. We can't free the pointer itself, but be |
14350 | sure to unlink it from the cache. Also release any associated storage | |
14351 | and perform cache maintenance. | |
72bf9492 DJ |
14352 | |
14353 | Only used during partial symbol parsing. */ | |
14354 | ||
14355 | static void | |
14356 | free_stack_comp_unit (void *data) | |
14357 | { | |
14358 | struct dwarf2_cu *cu = data; | |
14359 | ||
14360 | obstack_free (&cu->comp_unit_obstack, NULL); | |
14361 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
14362 | |
14363 | if (cu->per_cu != NULL) | |
14364 | { | |
14365 | /* This compilation unit is on the stack in our caller, so we | |
14366 | should not xfree it. Just unlink it. */ | |
14367 | cu->per_cu->cu = NULL; | |
14368 | cu->per_cu = NULL; | |
14369 | ||
14370 | /* If we had a per-cu pointer, then we may have other compilation | |
14371 | units loaded, so age them now. */ | |
14372 | age_cached_comp_units (); | |
14373 | } | |
14374 | } | |
14375 | ||
14376 | /* Free all cached compilation units. */ | |
14377 | ||
14378 | static void | |
14379 | free_cached_comp_units (void *data) | |
14380 | { | |
14381 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
14382 | ||
14383 | per_cu = dwarf2_per_objfile->read_in_chain; | |
14384 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
14385 | while (per_cu != NULL) | |
14386 | { | |
14387 | struct dwarf2_per_cu_data *next_cu; | |
14388 | ||
14389 | next_cu = per_cu->cu->read_in_chain; | |
14390 | ||
14391 | free_one_comp_unit (per_cu->cu); | |
14392 | *last_chain = next_cu; | |
14393 | ||
14394 | per_cu = next_cu; | |
14395 | } | |
14396 | } | |
14397 | ||
14398 | /* Increase the age counter on each cached compilation unit, and free | |
14399 | any that are too old. */ | |
14400 | ||
14401 | static void | |
14402 | age_cached_comp_units (void) | |
14403 | { | |
14404 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
14405 | ||
14406 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
14407 | per_cu = dwarf2_per_objfile->read_in_chain; | |
14408 | while (per_cu != NULL) | |
14409 | { | |
14410 | per_cu->cu->last_used ++; | |
14411 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
14412 | dwarf2_mark (per_cu->cu); | |
14413 | per_cu = per_cu->cu->read_in_chain; | |
14414 | } | |
14415 | ||
14416 | per_cu = dwarf2_per_objfile->read_in_chain; | |
14417 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
14418 | while (per_cu != NULL) | |
14419 | { | |
14420 | struct dwarf2_per_cu_data *next_cu; | |
14421 | ||
14422 | next_cu = per_cu->cu->read_in_chain; | |
14423 | ||
14424 | if (!per_cu->cu->mark) | |
14425 | { | |
14426 | free_one_comp_unit (per_cu->cu); | |
14427 | *last_chain = next_cu; | |
14428 | } | |
14429 | else | |
14430 | last_chain = &per_cu->cu->read_in_chain; | |
14431 | ||
14432 | per_cu = next_cu; | |
14433 | } | |
14434 | } | |
14435 | ||
14436 | /* Remove a single compilation unit from the cache. */ | |
14437 | ||
14438 | static void | |
14439 | free_one_cached_comp_unit (void *target_cu) | |
14440 | { | |
14441 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
14442 | ||
14443 | per_cu = dwarf2_per_objfile->read_in_chain; | |
14444 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
14445 | while (per_cu != NULL) | |
14446 | { | |
14447 | struct dwarf2_per_cu_data *next_cu; | |
14448 | ||
14449 | next_cu = per_cu->cu->read_in_chain; | |
14450 | ||
14451 | if (per_cu->cu == target_cu) | |
14452 | { | |
14453 | free_one_comp_unit (per_cu->cu); | |
14454 | *last_chain = next_cu; | |
14455 | break; | |
14456 | } | |
14457 | else | |
14458 | last_chain = &per_cu->cu->read_in_chain; | |
14459 | ||
14460 | per_cu = next_cu; | |
14461 | } | |
14462 | } | |
14463 | ||
fe3e1990 DJ |
14464 | /* Release all extra memory associated with OBJFILE. */ |
14465 | ||
14466 | void | |
14467 | dwarf2_free_objfile (struct objfile *objfile) | |
14468 | { | |
14469 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
14470 | ||
14471 | if (dwarf2_per_objfile == NULL) | |
14472 | return; | |
14473 | ||
14474 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
14475 | free_cached_comp_units (NULL); | |
14476 | ||
9291a0cd TT |
14477 | if (dwarf2_per_objfile->using_index) |
14478 | { | |
14479 | int i; | |
14480 | ||
14481 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
14482 | { | |
14483 | int j; | |
e254ef6a DE |
14484 | struct dwarf2_per_cu_data *per_cu = |
14485 | dwarf2_per_objfile->all_comp_units[i]; | |
9291a0cd | 14486 | |
e254ef6a | 14487 | if (!per_cu->v.quick->lines) |
9291a0cd TT |
14488 | continue; |
14489 | ||
e254ef6a | 14490 | for (j = 0; j < per_cu->v.quick->lines->num_file_names; ++j) |
9291a0cd | 14491 | { |
e254ef6a DE |
14492 | if (per_cu->v.quick->file_names) |
14493 | xfree ((void *) per_cu->v.quick->file_names[j]); | |
14494 | if (per_cu->v.quick->full_names) | |
14495 | xfree ((void *) per_cu->v.quick->full_names[j]); | |
9291a0cd TT |
14496 | } |
14497 | ||
e254ef6a | 14498 | free_line_header (per_cu->v.quick->lines); |
9291a0cd TT |
14499 | } |
14500 | } | |
14501 | ||
fe3e1990 DJ |
14502 | /* Everything else should be on the objfile obstack. */ |
14503 | } | |
14504 | ||
1c379e20 DJ |
14505 | /* A pair of DIE offset and GDB type pointer. We store these |
14506 | in a hash table separate from the DIEs, and preserve them | |
14507 | when the DIEs are flushed out of cache. */ | |
14508 | ||
14509 | struct dwarf2_offset_and_type | |
14510 | { | |
14511 | unsigned int offset; | |
14512 | struct type *type; | |
14513 | }; | |
14514 | ||
14515 | /* Hash function for a dwarf2_offset_and_type. */ | |
14516 | ||
14517 | static hashval_t | |
14518 | offset_and_type_hash (const void *item) | |
14519 | { | |
14520 | const struct dwarf2_offset_and_type *ofs = item; | |
9a619af0 | 14521 | |
1c379e20 DJ |
14522 | return ofs->offset; |
14523 | } | |
14524 | ||
14525 | /* Equality function for a dwarf2_offset_and_type. */ | |
14526 | ||
14527 | static int | |
14528 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
14529 | { | |
14530 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
14531 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 14532 | |
1c379e20 DJ |
14533 | return ofs_lhs->offset == ofs_rhs->offset; |
14534 | } | |
14535 | ||
14536 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
14537 | table if necessary. For convenience, return TYPE. |
14538 | ||
14539 | The DIEs reading must have careful ordering to: | |
14540 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
14541 | reading current DIE. | |
14542 | * Not trying to dereference contents of still incompletely read in types | |
14543 | while reading in other DIEs. | |
14544 | * Enable referencing still incompletely read in types just by a pointer to | |
14545 | the type without accessing its fields. | |
14546 | ||
14547 | Therefore caller should follow these rules: | |
14548 | * Try to fetch any prerequisite types we may need to build this DIE type | |
14549 | before building the type and calling set_die_type. | |
e71ec853 | 14550 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
14551 | possible before fetching more types to complete the current type. |
14552 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 14553 | |
f792889a | 14554 | static struct type * |
1c379e20 DJ |
14555 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
14556 | { | |
14557 | struct dwarf2_offset_and_type **slot, ofs; | |
673bfd45 DE |
14558 | struct objfile *objfile = cu->objfile; |
14559 | htab_t *type_hash_ptr; | |
1c379e20 | 14560 | |
b4ba55a1 JB |
14561 | /* For Ada types, make sure that the gnat-specific data is always |
14562 | initialized (if not already set). There are a few types where | |
14563 | we should not be doing so, because the type-specific area is | |
14564 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
14565 | where the type-specific area is used to store the floatformat). | |
14566 | But this is not a problem, because the gnat-specific information | |
14567 | is actually not needed for these types. */ | |
14568 | if (need_gnat_info (cu) | |
14569 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
14570 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
14571 | && !HAVE_GNAT_AUX_INFO (type)) | |
14572 | INIT_GNAT_SPECIFIC (type); | |
14573 | ||
673bfd45 DE |
14574 | if (cu->per_cu->from_debug_types) |
14575 | type_hash_ptr = &dwarf2_per_objfile->debug_types_type_hash; | |
14576 | else | |
14577 | type_hash_ptr = &dwarf2_per_objfile->debug_info_type_hash; | |
14578 | ||
14579 | if (*type_hash_ptr == NULL) | |
f792889a | 14580 | { |
673bfd45 DE |
14581 | *type_hash_ptr |
14582 | = htab_create_alloc_ex (127, | |
f792889a DJ |
14583 | offset_and_type_hash, |
14584 | offset_and_type_eq, | |
14585 | NULL, | |
673bfd45 | 14586 | &objfile->objfile_obstack, |
f792889a DJ |
14587 | hashtab_obstack_allocate, |
14588 | dummy_obstack_deallocate); | |
f792889a | 14589 | } |
1c379e20 DJ |
14590 | |
14591 | ofs.offset = die->offset; | |
14592 | ofs.type = type; | |
14593 | slot = (struct dwarf2_offset_and_type **) | |
673bfd45 | 14594 | htab_find_slot_with_hash (*type_hash_ptr, &ofs, ofs.offset, INSERT); |
7e314c57 JK |
14595 | if (*slot) |
14596 | complaint (&symfile_complaints, | |
14597 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
14598 | die->offset); | |
673bfd45 | 14599 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 14600 | **slot = ofs; |
f792889a | 14601 | return type; |
1c379e20 DJ |
14602 | } |
14603 | ||
673bfd45 DE |
14604 | /* Look up the type for the die at DIE_OFFSET in the appropriate type_hash |
14605 | table, or return NULL if the die does not have a saved type. */ | |
1c379e20 DJ |
14606 | |
14607 | static struct type * | |
673bfd45 DE |
14608 | get_die_type_at_offset (unsigned int offset, |
14609 | struct dwarf2_per_cu_data *per_cu) | |
1c379e20 DJ |
14610 | { |
14611 | struct dwarf2_offset_and_type *slot, ofs; | |
673bfd45 | 14612 | htab_t type_hash; |
f792889a | 14613 | |
673bfd45 DE |
14614 | if (per_cu->from_debug_types) |
14615 | type_hash = dwarf2_per_objfile->debug_types_type_hash; | |
14616 | else | |
14617 | type_hash = dwarf2_per_objfile->debug_info_type_hash; | |
f792889a DJ |
14618 | if (type_hash == NULL) |
14619 | return NULL; | |
1c379e20 | 14620 | |
673bfd45 | 14621 | ofs.offset = offset; |
1c379e20 DJ |
14622 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); |
14623 | if (slot) | |
14624 | return slot->type; | |
14625 | else | |
14626 | return NULL; | |
14627 | } | |
14628 | ||
673bfd45 DE |
14629 | /* Look up the type for DIE in the appropriate type_hash table, |
14630 | or return NULL if DIE does not have a saved type. */ | |
14631 | ||
14632 | static struct type * | |
14633 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
14634 | { | |
14635 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
14636 | } | |
14637 | ||
10b3939b DJ |
14638 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
14639 | ||
14640 | static void | |
14641 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
14642 | struct dwarf2_per_cu_data *ref_per_cu) | |
14643 | { | |
14644 | void **slot; | |
14645 | ||
14646 | if (cu->dependencies == NULL) | |
14647 | cu->dependencies | |
14648 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
14649 | NULL, &cu->comp_unit_obstack, | |
14650 | hashtab_obstack_allocate, | |
14651 | dummy_obstack_deallocate); | |
14652 | ||
14653 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
14654 | if (*slot == NULL) | |
14655 | *slot = ref_per_cu; | |
14656 | } | |
1c379e20 | 14657 | |
f504f079 DE |
14658 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
14659 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
14660 | cache that we must keep because we are keeping CU. */ |
14661 | ||
10b3939b DJ |
14662 | static int |
14663 | dwarf2_mark_helper (void **slot, void *data) | |
14664 | { | |
14665 | struct dwarf2_per_cu_data *per_cu; | |
14666 | ||
14667 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
14668 | if (per_cu->cu->mark) | |
14669 | return 1; | |
14670 | per_cu->cu->mark = 1; | |
14671 | ||
14672 | if (per_cu->cu->dependencies != NULL) | |
14673 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
14674 | ||
14675 | return 1; | |
14676 | } | |
14677 | ||
f504f079 DE |
14678 | /* Set the mark field in CU and in every other compilation unit in the |
14679 | cache that we must keep because we are keeping CU. */ | |
14680 | ||
ae038cb0 DJ |
14681 | static void |
14682 | dwarf2_mark (struct dwarf2_cu *cu) | |
14683 | { | |
14684 | if (cu->mark) | |
14685 | return; | |
14686 | cu->mark = 1; | |
10b3939b DJ |
14687 | if (cu->dependencies != NULL) |
14688 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
14689 | } |
14690 | ||
14691 | static void | |
14692 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
14693 | { | |
14694 | while (per_cu) | |
14695 | { | |
14696 | per_cu->cu->mark = 0; | |
14697 | per_cu = per_cu->cu->read_in_chain; | |
14698 | } | |
72bf9492 DJ |
14699 | } |
14700 | ||
72bf9492 DJ |
14701 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
14702 | is its offset in .debug_info for this objfile. */ | |
14703 | ||
14704 | static hashval_t | |
14705 | partial_die_hash (const void *item) | |
14706 | { | |
14707 | const struct partial_die_info *part_die = item; | |
9a619af0 | 14708 | |
72bf9492 DJ |
14709 | return part_die->offset; |
14710 | } | |
14711 | ||
14712 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
14713 | are equal if they have the same offset. */ | |
14714 | ||
14715 | static int | |
14716 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
14717 | { | |
14718 | const struct partial_die_info *part_die_lhs = item_lhs; | |
14719 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 14720 | |
72bf9492 DJ |
14721 | return part_die_lhs->offset == part_die_rhs->offset; |
14722 | } | |
14723 | ||
ae038cb0 DJ |
14724 | static struct cmd_list_element *set_dwarf2_cmdlist; |
14725 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
14726 | ||
14727 | static void | |
14728 | set_dwarf2_cmd (char *args, int from_tty) | |
14729 | { | |
14730 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
14731 | } | |
14732 | ||
14733 | static void | |
14734 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 14735 | { |
ae038cb0 DJ |
14736 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
14737 | } | |
14738 | ||
dce234bc PP |
14739 | /* If section described by INFO was mmapped, munmap it now. */ |
14740 | ||
14741 | static void | |
14742 | munmap_section_buffer (struct dwarf2_section_info *info) | |
14743 | { | |
14744 | if (info->was_mmapped) | |
14745 | { | |
14746 | #ifdef HAVE_MMAP | |
14747 | intptr_t begin = (intptr_t) info->buffer; | |
14748 | intptr_t map_begin = begin & ~(pagesize - 1); | |
14749 | size_t map_length = info->size + begin - map_begin; | |
9a619af0 | 14750 | |
dce234bc PP |
14751 | gdb_assert (munmap ((void *) map_begin, map_length) == 0); |
14752 | #else | |
14753 | /* Without HAVE_MMAP, we should never be here to begin with. */ | |
f3574227 | 14754 | gdb_assert_not_reached ("no mmap support"); |
dce234bc PP |
14755 | #endif |
14756 | } | |
14757 | } | |
14758 | ||
14759 | /* munmap debug sections for OBJFILE, if necessary. */ | |
14760 | ||
14761 | static void | |
c1bd65d0 | 14762 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
14763 | { |
14764 | struct dwarf2_per_objfile *data = d; | |
9a619af0 | 14765 | |
16be1145 DE |
14766 | /* This is sorted according to the order they're defined in to make it easier |
14767 | to keep in sync. */ | |
dce234bc PP |
14768 | munmap_section_buffer (&data->info); |
14769 | munmap_section_buffer (&data->abbrev); | |
14770 | munmap_section_buffer (&data->line); | |
16be1145 | 14771 | munmap_section_buffer (&data->loc); |
dce234bc | 14772 | munmap_section_buffer (&data->macinfo); |
16be1145 | 14773 | munmap_section_buffer (&data->str); |
dce234bc | 14774 | munmap_section_buffer (&data->ranges); |
16be1145 | 14775 | munmap_section_buffer (&data->types); |
dce234bc PP |
14776 | munmap_section_buffer (&data->frame); |
14777 | munmap_section_buffer (&data->eh_frame); | |
9291a0cd TT |
14778 | munmap_section_buffer (&data->gdb_index); |
14779 | } | |
14780 | ||
14781 | \f | |
14782 | ||
14783 | /* The contents of the hash table we create when building the string | |
14784 | table. */ | |
14785 | struct strtab_entry | |
14786 | { | |
14787 | offset_type offset; | |
14788 | const char *str; | |
14789 | }; | |
14790 | ||
14791 | /* Hash function for a strtab_entry. */ | |
b89be57b | 14792 | |
9291a0cd TT |
14793 | static hashval_t |
14794 | hash_strtab_entry (const void *e) | |
14795 | { | |
14796 | const struct strtab_entry *entry = e; | |
14797 | return mapped_index_string_hash (entry->str); | |
14798 | } | |
14799 | ||
14800 | /* Equality function for a strtab_entry. */ | |
b89be57b | 14801 | |
9291a0cd TT |
14802 | static int |
14803 | eq_strtab_entry (const void *a, const void *b) | |
14804 | { | |
14805 | const struct strtab_entry *ea = a; | |
14806 | const struct strtab_entry *eb = b; | |
14807 | return !strcmp (ea->str, eb->str); | |
14808 | } | |
14809 | ||
14810 | /* Create a strtab_entry hash table. */ | |
b89be57b | 14811 | |
9291a0cd TT |
14812 | static htab_t |
14813 | create_strtab (void) | |
14814 | { | |
14815 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
14816 | xfree, xcalloc, xfree); | |
14817 | } | |
14818 | ||
14819 | /* Add a string to the constant pool. Return the string's offset in | |
14820 | host order. */ | |
b89be57b | 14821 | |
9291a0cd TT |
14822 | static offset_type |
14823 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
14824 | { | |
14825 | void **slot; | |
14826 | struct strtab_entry entry; | |
14827 | struct strtab_entry *result; | |
14828 | ||
14829 | entry.str = str; | |
14830 | slot = htab_find_slot (table, &entry, INSERT); | |
14831 | if (*slot) | |
14832 | result = *slot; | |
14833 | else | |
14834 | { | |
14835 | result = XNEW (struct strtab_entry); | |
14836 | result->offset = obstack_object_size (cpool); | |
14837 | result->str = str; | |
14838 | obstack_grow_str0 (cpool, str); | |
14839 | *slot = result; | |
14840 | } | |
14841 | return result->offset; | |
14842 | } | |
14843 | ||
14844 | /* An entry in the symbol table. */ | |
14845 | struct symtab_index_entry | |
14846 | { | |
14847 | /* The name of the symbol. */ | |
14848 | const char *name; | |
14849 | /* The offset of the name in the constant pool. */ | |
14850 | offset_type index_offset; | |
14851 | /* A sorted vector of the indices of all the CUs that hold an object | |
14852 | of this name. */ | |
14853 | VEC (offset_type) *cu_indices; | |
14854 | }; | |
14855 | ||
14856 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
14857 | struct mapped_symtab | |
14858 | { | |
14859 | offset_type n_elements; | |
14860 | offset_type size; | |
14861 | struct symtab_index_entry **data; | |
14862 | }; | |
14863 | ||
14864 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 14865 | |
9291a0cd TT |
14866 | static hashval_t |
14867 | hash_symtab_entry (const void *e) | |
14868 | { | |
14869 | const struct symtab_index_entry *entry = e; | |
14870 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
14871 | sizeof (offset_type) * VEC_length (offset_type, | |
14872 | entry->cu_indices), | |
14873 | 0); | |
14874 | } | |
14875 | ||
14876 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 14877 | |
9291a0cd TT |
14878 | static int |
14879 | eq_symtab_entry (const void *a, const void *b) | |
14880 | { | |
14881 | const struct symtab_index_entry *ea = a; | |
14882 | const struct symtab_index_entry *eb = b; | |
14883 | int len = VEC_length (offset_type, ea->cu_indices); | |
14884 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
14885 | return 0; | |
14886 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
14887 | VEC_address (offset_type, eb->cu_indices), | |
14888 | sizeof (offset_type) * len); | |
14889 | } | |
14890 | ||
14891 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 14892 | |
9291a0cd TT |
14893 | static void |
14894 | delete_symtab_entry (void *p) | |
14895 | { | |
14896 | struct symtab_index_entry *entry = p; | |
14897 | VEC_free (offset_type, entry->cu_indices); | |
14898 | xfree (entry); | |
14899 | } | |
14900 | ||
14901 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 14902 | |
9291a0cd | 14903 | static htab_t |
3876f04e | 14904 | create_symbol_hash_table (void) |
9291a0cd TT |
14905 | { |
14906 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
14907 | delete_symtab_entry, xcalloc, xfree); | |
14908 | } | |
14909 | ||
14910 | /* Create a new mapped symtab object. */ | |
b89be57b | 14911 | |
9291a0cd TT |
14912 | static struct mapped_symtab * |
14913 | create_mapped_symtab (void) | |
14914 | { | |
14915 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
14916 | symtab->n_elements = 0; | |
14917 | symtab->size = 1024; | |
14918 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
14919 | return symtab; | |
14920 | } | |
14921 | ||
14922 | /* Destroy a mapped_symtab. */ | |
b89be57b | 14923 | |
9291a0cd TT |
14924 | static void |
14925 | cleanup_mapped_symtab (void *p) | |
14926 | { | |
14927 | struct mapped_symtab *symtab = p; | |
14928 | /* The contents of the array are freed when the other hash table is | |
14929 | destroyed. */ | |
14930 | xfree (symtab->data); | |
14931 | xfree (symtab); | |
14932 | } | |
14933 | ||
14934 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
14935 | the slot. */ | |
b89be57b | 14936 | |
9291a0cd TT |
14937 | static struct symtab_index_entry ** |
14938 | find_slot (struct mapped_symtab *symtab, const char *name) | |
14939 | { | |
14940 | offset_type index, step, hash = mapped_index_string_hash (name); | |
14941 | ||
14942 | index = hash & (symtab->size - 1); | |
14943 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
14944 | ||
14945 | for (;;) | |
14946 | { | |
14947 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
14948 | return &symtab->data[index]; | |
14949 | index = (index + step) & (symtab->size - 1); | |
14950 | } | |
14951 | } | |
14952 | ||
14953 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 14954 | |
9291a0cd TT |
14955 | static void |
14956 | hash_expand (struct mapped_symtab *symtab) | |
14957 | { | |
14958 | offset_type old_size = symtab->size; | |
14959 | offset_type i; | |
14960 | struct symtab_index_entry **old_entries = symtab->data; | |
14961 | ||
14962 | symtab->size *= 2; | |
14963 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
14964 | ||
14965 | for (i = 0; i < old_size; ++i) | |
14966 | { | |
14967 | if (old_entries[i]) | |
14968 | { | |
14969 | struct symtab_index_entry **slot = find_slot (symtab, | |
14970 | old_entries[i]->name); | |
14971 | *slot = old_entries[i]; | |
14972 | } | |
14973 | } | |
14974 | ||
14975 | xfree (old_entries); | |
14976 | } | |
14977 | ||
14978 | /* Add an entry to SYMTAB. NAME is the name of the symbol. CU_INDEX | |
14979 | is the index of the CU in which the symbol appears. */ | |
b89be57b | 14980 | |
9291a0cd TT |
14981 | static void |
14982 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
14983 | offset_type cu_index) | |
14984 | { | |
14985 | struct symtab_index_entry **slot; | |
14986 | ||
14987 | ++symtab->n_elements; | |
14988 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
14989 | hash_expand (symtab); | |
14990 | ||
14991 | slot = find_slot (symtab, name); | |
14992 | if (!*slot) | |
14993 | { | |
14994 | *slot = XNEW (struct symtab_index_entry); | |
14995 | (*slot)->name = name; | |
14996 | (*slot)->cu_indices = NULL; | |
14997 | } | |
14998 | /* Don't push an index twice. Due to how we add entries we only | |
14999 | have to check the last one. */ | |
15000 | if (VEC_empty (offset_type, (*slot)->cu_indices) | |
15001 | || VEC_length (offset_type, (*slot)->cu_indices) != cu_index) | |
15002 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index); | |
15003 | } | |
15004 | ||
15005 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 15006 | |
9291a0cd | 15007 | static offset_type |
3876f04e | 15008 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
15009 | struct symtab_index_entry *entry) |
15010 | { | |
15011 | void **slot; | |
15012 | ||
3876f04e | 15013 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
15014 | if (!*slot) |
15015 | { | |
15016 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
15017 | offset_type val = MAYBE_SWAP (len); | |
15018 | offset_type iter; | |
15019 | int i; | |
15020 | ||
15021 | *slot = entry; | |
15022 | entry->index_offset = obstack_object_size (cpool); | |
15023 | ||
15024 | obstack_grow (cpool, &val, sizeof (val)); | |
15025 | for (i = 0; | |
15026 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
15027 | ++i) | |
15028 | { | |
15029 | val = MAYBE_SWAP (iter); | |
15030 | obstack_grow (cpool, &val, sizeof (val)); | |
15031 | } | |
15032 | } | |
15033 | else | |
15034 | { | |
15035 | struct symtab_index_entry *old_entry = *slot; | |
15036 | entry->index_offset = old_entry->index_offset; | |
15037 | entry = old_entry; | |
15038 | } | |
15039 | return entry->index_offset; | |
15040 | } | |
15041 | ||
15042 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
15043 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 15044 | |
9291a0cd TT |
15045 | static void |
15046 | write_hash_table (struct mapped_symtab *symtab, | |
15047 | struct obstack *output, struct obstack *cpool) | |
15048 | { | |
15049 | offset_type i; | |
3876f04e | 15050 | htab_t symbol_hash_table; |
9291a0cd TT |
15051 | htab_t str_table; |
15052 | ||
3876f04e | 15053 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 15054 | str_table = create_strtab (); |
3876f04e | 15055 | |
9291a0cd TT |
15056 | /* We add all the index vectors to the constant pool first, to |
15057 | ensure alignment is ok. */ | |
15058 | for (i = 0; i < symtab->size; ++i) | |
15059 | { | |
15060 | if (symtab->data[i]) | |
3876f04e | 15061 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
15062 | } |
15063 | ||
15064 | /* Now write out the hash table. */ | |
15065 | for (i = 0; i < symtab->size; ++i) | |
15066 | { | |
15067 | offset_type str_off, vec_off; | |
15068 | ||
15069 | if (symtab->data[i]) | |
15070 | { | |
15071 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
15072 | vec_off = symtab->data[i]->index_offset; | |
15073 | } | |
15074 | else | |
15075 | { | |
15076 | /* While 0 is a valid constant pool index, it is not valid | |
15077 | to have 0 for both offsets. */ | |
15078 | str_off = 0; | |
15079 | vec_off = 0; | |
15080 | } | |
15081 | ||
15082 | str_off = MAYBE_SWAP (str_off); | |
15083 | vec_off = MAYBE_SWAP (vec_off); | |
15084 | ||
15085 | obstack_grow (output, &str_off, sizeof (str_off)); | |
15086 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
15087 | } | |
15088 | ||
15089 | htab_delete (str_table); | |
3876f04e | 15090 | htab_delete (symbol_hash_table); |
9291a0cd TT |
15091 | } |
15092 | ||
15093 | /* Write an address entry to ADDR_OBSTACK. The addresses are taken | |
15094 | from PST; CU_INDEX is the index of the CU in the vector of all | |
15095 | CUs. */ | |
b89be57b | 15096 | |
9291a0cd TT |
15097 | static void |
15098 | add_address_entry (struct objfile *objfile, | |
15099 | struct obstack *addr_obstack, struct partial_symtab *pst, | |
15100 | unsigned int cu_index) | |
15101 | { | |
15102 | offset_type offset; | |
15103 | char addr[8]; | |
15104 | CORE_ADDR baseaddr; | |
15105 | ||
1fd400ff TT |
15106 | /* Don't bother recording empty ranges. */ |
15107 | if (pst->textlow == pst->texthigh) | |
15108 | return; | |
15109 | ||
9291a0cd TT |
15110 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
15111 | ||
15112 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, pst->textlow - baseaddr); | |
15113 | obstack_grow (addr_obstack, addr, 8); | |
15114 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, pst->texthigh - baseaddr); | |
15115 | obstack_grow (addr_obstack, addr, 8); | |
15116 | offset = MAYBE_SWAP (cu_index); | |
15117 | obstack_grow (addr_obstack, &offset, sizeof (offset_type)); | |
15118 | } | |
15119 | ||
15120 | /* Add a list of partial symbols to SYMTAB. */ | |
b89be57b | 15121 | |
9291a0cd TT |
15122 | static void |
15123 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 15124 | htab_t psyms_seen, |
9291a0cd TT |
15125 | struct partial_symbol **psymp, |
15126 | int count, | |
987d643c TT |
15127 | offset_type cu_index, |
15128 | int is_static) | |
9291a0cd TT |
15129 | { |
15130 | for (; count-- > 0; ++psymp) | |
15131 | { | |
987d643c TT |
15132 | void **slot, *lookup; |
15133 | ||
9291a0cd TT |
15134 | if (SYMBOL_LANGUAGE (*psymp) == language_ada) |
15135 | error (_("Ada is not currently supported by the index")); | |
987d643c TT |
15136 | |
15137 | /* We only want to add a given psymbol once. However, we also | |
15138 | want to account for whether it is global or static. So, we | |
15139 | may add it twice, using slightly different values. */ | |
15140 | if (is_static) | |
15141 | { | |
15142 | uintptr_t val = 1 | (uintptr_t) *psymp; | |
15143 | ||
15144 | lookup = (void *) val; | |
15145 | } | |
15146 | else | |
15147 | lookup = *psymp; | |
15148 | ||
15149 | /* Only add a given psymbol once. */ | |
15150 | slot = htab_find_slot (psyms_seen, lookup, INSERT); | |
15151 | if (!*slot) | |
15152 | { | |
15153 | *slot = lookup; | |
15154 | add_index_entry (symtab, SYMBOL_NATURAL_NAME (*psymp), cu_index); | |
15155 | } | |
9291a0cd TT |
15156 | } |
15157 | } | |
15158 | ||
15159 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
15160 | exception if there is an error. */ | |
b89be57b | 15161 | |
9291a0cd TT |
15162 | static void |
15163 | write_obstack (FILE *file, struct obstack *obstack) | |
15164 | { | |
15165 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
15166 | file) | |
15167 | != obstack_object_size (obstack)) | |
15168 | error (_("couldn't data write to file")); | |
15169 | } | |
15170 | ||
15171 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 15172 | |
9291a0cd TT |
15173 | static void |
15174 | unlink_if_set (void *p) | |
15175 | { | |
15176 | char **filename = p; | |
15177 | if (*filename) | |
15178 | unlink (*filename); | |
15179 | } | |
15180 | ||
1fd400ff TT |
15181 | /* A helper struct used when iterating over debug_types. */ |
15182 | struct signatured_type_index_data | |
15183 | { | |
15184 | struct objfile *objfile; | |
15185 | struct mapped_symtab *symtab; | |
15186 | struct obstack *types_list; | |
987d643c | 15187 | htab_t psyms_seen; |
1fd400ff TT |
15188 | int cu_index; |
15189 | }; | |
15190 | ||
15191 | /* A helper function that writes a single signatured_type to an | |
15192 | obstack. */ | |
b89be57b | 15193 | |
1fd400ff TT |
15194 | static int |
15195 | write_one_signatured_type (void **slot, void *d) | |
15196 | { | |
15197 | struct signatured_type_index_data *info = d; | |
15198 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
e254ef6a DE |
15199 | struct dwarf2_per_cu_data *per_cu = &entry->per_cu; |
15200 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
1fd400ff TT |
15201 | gdb_byte val[8]; |
15202 | ||
15203 | write_psymbols (info->symtab, | |
987d643c | 15204 | info->psyms_seen, |
1fd400ff | 15205 | info->objfile->global_psymbols.list + psymtab->globals_offset, |
987d643c TT |
15206 | psymtab->n_global_syms, info->cu_index, |
15207 | 0); | |
1fd400ff | 15208 | write_psymbols (info->symtab, |
987d643c | 15209 | info->psyms_seen, |
1fd400ff | 15210 | info->objfile->static_psymbols.list + psymtab->statics_offset, |
987d643c TT |
15211 | psymtab->n_static_syms, info->cu_index, |
15212 | 1); | |
1fd400ff TT |
15213 | |
15214 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->offset); | |
15215 | obstack_grow (info->types_list, val, 8); | |
15216 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->type_offset); | |
15217 | obstack_grow (info->types_list, val, 8); | |
15218 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
15219 | obstack_grow (info->types_list, val, 8); | |
15220 | ||
15221 | ++info->cu_index; | |
15222 | ||
15223 | return 1; | |
15224 | } | |
15225 | ||
987d643c TT |
15226 | /* A cleanup function for an htab_t. */ |
15227 | ||
15228 | static void | |
15229 | cleanup_htab (void *arg) | |
15230 | { | |
15231 | htab_delete (arg); | |
15232 | } | |
15233 | ||
9291a0cd | 15234 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 15235 | |
9291a0cd TT |
15236 | static void |
15237 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
15238 | { | |
15239 | struct cleanup *cleanup; | |
15240 | char *filename, *cleanup_filename; | |
1fd400ff TT |
15241 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
15242 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
15243 | int i; |
15244 | FILE *out_file; | |
15245 | struct mapped_symtab *symtab; | |
15246 | offset_type val, size_of_contents, total_len; | |
15247 | struct stat st; | |
15248 | char buf[8]; | |
987d643c | 15249 | htab_t psyms_seen; |
9291a0cd TT |
15250 | |
15251 | if (!objfile->psymtabs) | |
15252 | return; | |
15253 | if (dwarf2_per_objfile->using_index) | |
15254 | error (_("Cannot use an index to create the index")); | |
15255 | ||
15256 | if (stat (objfile->name, &st) < 0) | |
15257 | perror_with_name (_("Could not stat")); | |
15258 | ||
15259 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
15260 | INDEX_SUFFIX, (char *) NULL); | |
15261 | cleanup = make_cleanup (xfree, filename); | |
15262 | ||
15263 | out_file = fopen (filename, "wb"); | |
15264 | if (!out_file) | |
15265 | error (_("Can't open `%s' for writing"), filename); | |
15266 | ||
15267 | cleanup_filename = filename; | |
15268 | make_cleanup (unlink_if_set, &cleanup_filename); | |
15269 | ||
15270 | symtab = create_mapped_symtab (); | |
15271 | make_cleanup (cleanup_mapped_symtab, symtab); | |
15272 | ||
15273 | obstack_init (&addr_obstack); | |
15274 | make_cleanup_obstack_free (&addr_obstack); | |
15275 | ||
15276 | obstack_init (&cu_list); | |
15277 | make_cleanup_obstack_free (&cu_list); | |
15278 | ||
1fd400ff TT |
15279 | obstack_init (&types_cu_list); |
15280 | make_cleanup_obstack_free (&types_cu_list); | |
15281 | ||
987d643c TT |
15282 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
15283 | NULL, xcalloc, xfree); | |
15284 | make_cleanup (cleanup_htab, psyms_seen); | |
15285 | ||
1fd400ff TT |
15286 | /* The list is already sorted, so we don't need to do additional |
15287 | work here. Also, the debug_types entries do not appear in | |
15288 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
15289 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
15290 | { | |
e254ef6a DE |
15291 | struct dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->all_comp_units[i]; |
15292 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
9291a0cd TT |
15293 | gdb_byte val[8]; |
15294 | ||
15295 | write_psymbols (symtab, | |
987d643c | 15296 | psyms_seen, |
9291a0cd | 15297 | objfile->global_psymbols.list + psymtab->globals_offset, |
987d643c TT |
15298 | psymtab->n_global_syms, i, |
15299 | 0); | |
9291a0cd | 15300 | write_psymbols (symtab, |
987d643c | 15301 | psyms_seen, |
9291a0cd | 15302 | objfile->static_psymbols.list + psymtab->statics_offset, |
987d643c TT |
15303 | psymtab->n_static_syms, i, |
15304 | 1); | |
9291a0cd TT |
15305 | |
15306 | add_address_entry (objfile, &addr_obstack, psymtab, i); | |
15307 | ||
e254ef6a | 15308 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->offset); |
9291a0cd | 15309 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 15310 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
15311 | obstack_grow (&cu_list, val, 8); |
15312 | } | |
15313 | ||
1fd400ff TT |
15314 | /* Write out the .debug_type entries, if any. */ |
15315 | if (dwarf2_per_objfile->signatured_types) | |
15316 | { | |
15317 | struct signatured_type_index_data sig_data; | |
15318 | ||
15319 | sig_data.objfile = objfile; | |
15320 | sig_data.symtab = symtab; | |
15321 | sig_data.types_list = &types_cu_list; | |
987d643c | 15322 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
15323 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
15324 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
15325 | write_one_signatured_type, &sig_data); | |
15326 | } | |
15327 | ||
9291a0cd TT |
15328 | obstack_init (&constant_pool); |
15329 | make_cleanup_obstack_free (&constant_pool); | |
15330 | obstack_init (&symtab_obstack); | |
15331 | make_cleanup_obstack_free (&symtab_obstack); | |
15332 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
15333 | ||
15334 | obstack_init (&contents); | |
15335 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 15336 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
15337 | total_len = size_of_contents; |
15338 | ||
15339 | /* The version number. */ | |
987d643c | 15340 | val = MAYBE_SWAP (3); |
9291a0cd TT |
15341 | obstack_grow (&contents, &val, sizeof (val)); |
15342 | ||
15343 | /* The offset of the CU list from the start of the file. */ | |
15344 | val = MAYBE_SWAP (total_len); | |
15345 | obstack_grow (&contents, &val, sizeof (val)); | |
15346 | total_len += obstack_object_size (&cu_list); | |
15347 | ||
1fd400ff TT |
15348 | /* The offset of the types CU list from the start of the file. */ |
15349 | val = MAYBE_SWAP (total_len); | |
15350 | obstack_grow (&contents, &val, sizeof (val)); | |
15351 | total_len += obstack_object_size (&types_cu_list); | |
15352 | ||
9291a0cd TT |
15353 | /* The offset of the address table from the start of the file. */ |
15354 | val = MAYBE_SWAP (total_len); | |
15355 | obstack_grow (&contents, &val, sizeof (val)); | |
15356 | total_len += obstack_object_size (&addr_obstack); | |
15357 | ||
15358 | /* The offset of the symbol table from the start of the file. */ | |
15359 | val = MAYBE_SWAP (total_len); | |
15360 | obstack_grow (&contents, &val, sizeof (val)); | |
15361 | total_len += obstack_object_size (&symtab_obstack); | |
15362 | ||
15363 | /* The offset of the constant pool from the start of the file. */ | |
15364 | val = MAYBE_SWAP (total_len); | |
15365 | obstack_grow (&contents, &val, sizeof (val)); | |
15366 | total_len += obstack_object_size (&constant_pool); | |
15367 | ||
15368 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
15369 | ||
15370 | write_obstack (out_file, &contents); | |
15371 | write_obstack (out_file, &cu_list); | |
1fd400ff | 15372 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
15373 | write_obstack (out_file, &addr_obstack); |
15374 | write_obstack (out_file, &symtab_obstack); | |
15375 | write_obstack (out_file, &constant_pool); | |
15376 | ||
15377 | fclose (out_file); | |
15378 | ||
15379 | /* We want to keep the file, so we set cleanup_filename to NULL | |
15380 | here. See unlink_if_set. */ | |
15381 | cleanup_filename = NULL; | |
15382 | ||
15383 | do_cleanups (cleanup); | |
15384 | } | |
15385 | ||
15386 | /* The mapped index file format is designed to be directly mmap()able | |
15387 | on any architecture. In most cases, a datum is represented using a | |
15388 | little-endian 32-bit integer value, called an offset_type. Big | |
15389 | endian machines must byte-swap the values before using them. | |
15390 | Exceptions to this rule are noted. The data is laid out such that | |
15391 | alignment is always respected. | |
15392 | ||
15393 | A mapped index consists of several sections. | |
15394 | ||
15395 | 1. The file header. This is a sequence of values, of offset_type | |
15396 | unless otherwise noted: | |
987d643c TT |
15397 | |
15398 | [0] The version number, currently 3. Versions 1 and 2 are | |
15399 | obsolete. | |
9291a0cd | 15400 | [1] The offset, from the start of the file, of the CU list. |
987d643c TT |
15401 | [2] The offset, from the start of the file, of the types CU list. |
15402 | Note that this section can be empty, in which case this offset will | |
15403 | be equal to the next offset. | |
15404 | [3] The offset, from the start of the file, of the address section. | |
15405 | [4] The offset, from the start of the file, of the symbol table. | |
15406 | [5] The offset, from the start of the file, of the constant pool. | |
9291a0cd TT |
15407 | |
15408 | 2. The CU list. This is a sequence of pairs of 64-bit | |
1fd400ff TT |
15409 | little-endian values, sorted by the CU offset. The first element |
15410 | in each pair is the offset of a CU in the .debug_info section. The | |
15411 | second element in each pair is the length of that CU. References | |
15412 | to a CU elsewhere in the map are done using a CU index, which is | |
15413 | just the 0-based index into this table. Note that if there are | |
15414 | type CUs, then conceptually CUs and type CUs form a single list for | |
15415 | the purposes of CU indices. | |
15416 | ||
987d643c TT |
15417 | 3. The types CU list. This is a sequence of triplets of 64-bit |
15418 | little-endian values. In a triplet, the first value is the CU | |
15419 | offset, the second value is the type offset in the CU, and the | |
15420 | third value is the type signature. The types CU list is not | |
15421 | sorted. | |
9291a0cd | 15422 | |
987d643c | 15423 | 4. The address section. The address section consists of a sequence |
9291a0cd TT |
15424 | of address entries. Each address entry has three elements. |
15425 | [0] The low address. This is a 64-bit little-endian value. | |
15426 | [1] The high address. This is a 64-bit little-endian value. | |
15427 | [2] The CU index. This is an offset_type value. | |
15428 | ||
987d643c | 15429 | 5. The symbol table. This is a hash table. The size of the hash |
9291a0cd TT |
15430 | table is always a power of 2. The initial hash and the step are |
15431 | currently defined by the `find_slot' function. | |
15432 | ||
15433 | Each slot in the hash table consists of a pair of offset_type | |
15434 | values. The first value is the offset of the symbol's name in the | |
15435 | constant pool. The second value is the offset of the CU vector in | |
15436 | the constant pool. | |
15437 | ||
15438 | If both values are 0, then this slot in the hash table is empty. | |
15439 | This is ok because while 0 is a valid constant pool index, it | |
15440 | cannot be a valid index for both a string and a CU vector. | |
15441 | ||
15442 | A string in the constant pool is stored as a \0-terminated string, | |
15443 | as you'd expect. | |
15444 | ||
15445 | A CU vector in the constant pool is a sequence of offset_type | |
15446 | values. The first value is the number of CU indices in the vector. | |
15447 | Each subsequent value is the index of a CU in the CU list. This | |
15448 | element in the hash table is used to indicate which CUs define the | |
15449 | symbol. | |
15450 | ||
987d643c | 15451 | 6. The constant pool. This is simply a bunch of bytes. It is |
9291a0cd TT |
15452 | organized so that alignment is correct: CU vectors are stored |
15453 | first, followed by strings. */ | |
11570e71 | 15454 | |
9291a0cd TT |
15455 | static void |
15456 | save_gdb_index_command (char *arg, int from_tty) | |
15457 | { | |
15458 | struct objfile *objfile; | |
15459 | ||
15460 | if (!arg || !*arg) | |
96d19272 | 15461 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
15462 | |
15463 | ALL_OBJFILES (objfile) | |
15464 | { | |
15465 | struct stat st; | |
15466 | ||
15467 | /* If the objfile does not correspond to an actual file, skip it. */ | |
15468 | if (stat (objfile->name, &st) < 0) | |
15469 | continue; | |
15470 | ||
15471 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
15472 | if (dwarf2_per_objfile) | |
15473 | { | |
15474 | volatile struct gdb_exception except; | |
15475 | ||
15476 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
15477 | { | |
15478 | write_psymtabs_to_index (objfile, arg); | |
15479 | } | |
15480 | if (except.reason < 0) | |
15481 | exception_fprintf (gdb_stderr, except, | |
15482 | _("Error while writing index for `%s': "), | |
15483 | objfile->name); | |
15484 | } | |
15485 | } | |
dce234bc PP |
15486 | } |
15487 | ||
9291a0cd TT |
15488 | \f |
15489 | ||
9eae7c52 TT |
15490 | int dwarf2_always_disassemble; |
15491 | ||
15492 | static void | |
15493 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
15494 | struct cmd_list_element *c, const char *value) | |
15495 | { | |
15496 | fprintf_filtered (file, _("\ | |
15497 | Whether to always disassemble DWARF expressions is %s.\n"), | |
15498 | value); | |
15499 | } | |
15500 | ||
6502dd73 DJ |
15501 | void _initialize_dwarf2_read (void); |
15502 | ||
15503 | void | |
15504 | _initialize_dwarf2_read (void) | |
15505 | { | |
96d19272 JK |
15506 | struct cmd_list_element *c; |
15507 | ||
dce234bc | 15508 | dwarf2_objfile_data_key |
c1bd65d0 | 15509 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 15510 | |
1bedd215 AC |
15511 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
15512 | Set DWARF 2 specific variables.\n\ | |
15513 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
15514 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
15515 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
15516 | ||
1bedd215 AC |
15517 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
15518 | Show DWARF 2 specific variables\n\ | |
15519 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
15520 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
15521 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
15522 | ||
15523 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
15524 | &dwarf2_max_cache_age, _("\ |
15525 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
15526 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
15527 | A higher limit means that cached compilation units will be stored\n\ | |
15528 | in memory longer, and more total memory will be used. Zero disables\n\ | |
15529 | caching, which can slow down startup."), | |
2c5b56ce | 15530 | NULL, |
920d2a44 | 15531 | show_dwarf2_max_cache_age, |
2c5b56ce | 15532 | &set_dwarf2_cmdlist, |
ae038cb0 | 15533 | &show_dwarf2_cmdlist); |
d97bc12b | 15534 | |
9eae7c52 TT |
15535 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
15536 | &dwarf2_always_disassemble, _("\ | |
15537 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
15538 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
15539 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
15540 | syntax. When disabled, expressions will be printed in a more\n\ | |
15541 | conversational style, when possible."), | |
15542 | NULL, | |
15543 | show_dwarf2_always_disassemble, | |
15544 | &set_dwarf2_cmdlist, | |
15545 | &show_dwarf2_cmdlist); | |
15546 | ||
d97bc12b DE |
15547 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
15548 | Set debugging of the dwarf2 DIE reader."), _("\ | |
15549 | Show debugging of the dwarf2 DIE reader."), _("\ | |
15550 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
15551 | The value is the maximum depth to print."), | |
15552 | NULL, | |
15553 | NULL, | |
15554 | &setdebuglist, &showdebuglist); | |
9291a0cd | 15555 | |
96d19272 | 15556 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 DE |
15557 | _("\ |
15558 | Save a .gdb-index file.\n\ | |
15559 | Usage: save gdb-index DIRECTORY"), | |
96d19272 JK |
15560 | &save_cmdlist); |
15561 | set_cmd_completer (c, filename_completer); | |
6502dd73 | 15562 | } |